(function(l, r) { if (!l || l.getElementById('livereloadscript')) return; r = l.createElement('script'); r.async = 1; r.src = '//' + (self.location.host || 'localhost').split(':')[0] + ':35729/livereload.js?snipver=1'; r.id = 'livereloadscript'; l.getElementsByTagName('head')[0].appendChild(r) })(self.document);
var app = (function () {
    'use strict';

    function noop$2() { }
    function assign$3(tar, src) {
        // @ts-ignore
        for (const k in src)
            tar[k] = src[k];
        return tar;
    }
    function add_location(element, file, line, column, char) {
        element.__svelte_meta = {
            loc: { file, line, column, char }
        };
    }
    function run(fn) {
        return fn();
    }
    function blank_object() {
        return Object.create(null);
    }
    function run_all(fns) {
        fns.forEach(run);
    }
    function is_function(thing) {
        return typeof thing === 'function';
    }
    function safe_not_equal(a, b) {
        return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
    }
    let src_url_equal_anchor;
    function src_url_equal(element_src, url) {
        if (!src_url_equal_anchor) {
            src_url_equal_anchor = document.createElement('a');
        }
        src_url_equal_anchor.href = url;
        return element_src === src_url_equal_anchor.href;
    }
    function is_empty(obj) {
        return Object.keys(obj).length === 0;
    }
    function validate_store(store, name) {
        if (store != null && typeof store.subscribe !== 'function') {
            throw new Error(`'${name}' is not a store with a 'subscribe' method`);
        }
    }
    function subscribe(store, ...callbacks) {
        if (store == null) {
            return noop$2;
        }
        const unsub = store.subscribe(...callbacks);
        return unsub.unsubscribe ? () => unsub.unsubscribe() : unsub;
    }
    function get_store_value(store) {
        let value;
        subscribe(store, _ => value = _)();
        return value;
    }
    function component_subscribe(component, store, callback) {
        component.$$.on_destroy.push(subscribe(store, callback));
    }
    function create_slot(definition, ctx, $$scope, fn) {
        if (definition) {
            const slot_ctx = get_slot_context(definition, ctx, $$scope, fn);
            return definition[0](slot_ctx);
        }
    }
    function get_slot_context(definition, ctx, $$scope, fn) {
        return definition[1] && fn
            ? assign$3($$scope.ctx.slice(), definition[1](fn(ctx)))
            : $$scope.ctx;
    }
    function get_slot_changes(definition, $$scope, dirty, fn) {
        if (definition[2] && fn) {
            const lets = definition[2](fn(dirty));
            if ($$scope.dirty === undefined) {
                return lets;
            }
            if (typeof lets === 'object') {
                const merged = [];
                const len = Math.max($$scope.dirty.length, lets.length);
                for (let i = 0; i < len; i += 1) {
                    merged[i] = $$scope.dirty[i] | lets[i];
                }
                return merged;
            }
            return $$scope.dirty | lets;
        }
        return $$scope.dirty;
    }
    function update_slot_base(slot, slot_definition, ctx, $$scope, slot_changes, get_slot_context_fn) {
        if (slot_changes) {
            const slot_context = get_slot_context(slot_definition, ctx, $$scope, get_slot_context_fn);
            slot.p(slot_context, slot_changes);
        }
    }
    function get_all_dirty_from_scope($$scope) {
        if ($$scope.ctx.length > 32) {
            const dirty = [];
            const length = $$scope.ctx.length / 32;
            for (let i = 0; i < length; i++) {
                dirty[i] = -1;
            }
            return dirty;
        }
        return -1;
    }
    function null_to_empty(value) {
        return value == null ? '' : value;
    }
    function set_store_value(store, ret, value) {
        store.set(value);
        return ret;
    }

    const globals = (typeof window !== 'undefined'
        ? window
        : typeof globalThis !== 'undefined'
            ? globalThis
            : global);
    function append(target, node) {
        target.appendChild(node);
    }
    function insert(target, node, anchor) {
        target.insertBefore(node, anchor || null);
    }
    function detach(node) {
        if (node.parentNode) {
            node.parentNode.removeChild(node);
        }
    }
    function destroy_each(iterations, detaching) {
        for (let i = 0; i < iterations.length; i += 1) {
            if (iterations[i])
                iterations[i].d(detaching);
        }
    }
    function element$1(name) {
        return document.createElement(name);
    }
    function text(data) {
        return document.createTextNode(data);
    }
    function space() {
        return text(' ');
    }
    function empty() {
        return text('');
    }
    function listen(node, event, handler, options) {
        node.addEventListener(event, handler, options);
        return () => node.removeEventListener(event, handler, options);
    }
    function attr(node, attribute, value) {
        if (value == null)
            node.removeAttribute(attribute);
        else if (node.getAttribute(attribute) !== value)
            node.setAttribute(attribute, value);
    }
    function to_number(value) {
        return value === '' ? null : +value;
    }
    function children(element) {
        return Array.from(element.childNodes);
    }
    function set_input_value(input, value) {
        input.value = value == null ? '' : value;
    }
    function set_style(node, key, value, important) {
        if (value == null) {
            node.style.removeProperty(key);
        }
        else {
            node.style.setProperty(key, value, important ? 'important' : '');
        }
    }
    function select_option(select, value, mounting) {
        for (let i = 0; i < select.options.length; i += 1) {
            const option = select.options[i];
            if (option.__value === value) {
                option.selected = true;
                return;
            }
        }
        if (!mounting || value !== undefined) {
            select.selectedIndex = -1; // no option should be selected
        }
    }
    function select_value(select) {
        const selected_option = select.querySelector(':checked');
        return selected_option && selected_option.__value;
    }
    function toggle_class(element, name, toggle) {
        element.classList[toggle ? 'add' : 'remove'](name);
    }
    function custom_event(type, detail, { bubbles = false, cancelable = false } = {}) {
        const e = document.createEvent('CustomEvent');
        e.initCustomEvent(type, bubbles, cancelable, detail);
        return e;
    }

    let current_component;
    function set_current_component(component) {
        current_component = component;
    }
    function get_current_component() {
        if (!current_component)
            throw new Error('Function called outside component initialization');
        return current_component;
    }
    /**
     * The `onMount` function schedules a callback to run as soon as the component has been mounted to the DOM.
     * It must be called during the component's initialisation (but doesn't need to live *inside* the component;
     * it can be called from an external module).
     *
     * `onMount` does not run inside a [server-side component](/docs#run-time-server-side-component-api).
     *
     * https://svelte.dev/docs#run-time-svelte-onmount
     */
    function onMount(fn) {
        get_current_component().$$.on_mount.push(fn);
    }
    /**
     * Schedules a callback to run immediately before the component is unmounted.
     *
     * Out of `onMount`, `beforeUpdate`, `afterUpdate` and `onDestroy`, this is the
     * only one that runs inside a server-side component.
     *
     * https://svelte.dev/docs#run-time-svelte-ondestroy
     */
    function onDestroy(fn) {
        get_current_component().$$.on_destroy.push(fn);
    }
    /**
     * Creates an event dispatcher that can be used to dispatch [component events](/docs#template-syntax-component-directives-on-eventname).
     * Event dispatchers are functions that can take two arguments: `name` and `detail`.
     *
     * Component events created with `createEventDispatcher` create a
     * [CustomEvent](https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent).
     * These events do not [bubble](https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Building_blocks/Events#Event_bubbling_and_capture).
     * The `detail` argument corresponds to the [CustomEvent.detail](https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent/detail)
     * property and can contain any type of data.
     *
     * https://svelte.dev/docs#run-time-svelte-createeventdispatcher
     */
    function createEventDispatcher() {
        const component = get_current_component();
        return (type, detail, { cancelable = false } = {}) => {
            const callbacks = component.$$.callbacks[type];
            if (callbacks) {
                // TODO are there situations where events could be dispatched
                // in a server (non-DOM) environment?
                const event = custom_event(type, detail, { cancelable });
                callbacks.slice().forEach(fn => {
                    fn.call(component, event);
                });
                return !event.defaultPrevented;
            }
            return true;
        };
    }

    const dirty_components = [];
    const binding_callbacks = [];
    let render_callbacks = [];
    const flush_callbacks = [];
    const resolved_promise = /* @__PURE__ */ Promise.resolve();
    let update_scheduled = false;
    function schedule_update() {
        if (!update_scheduled) {
            update_scheduled = true;
            resolved_promise.then(flush);
        }
    }
    function tick() {
        schedule_update();
        return resolved_promise;
    }
    function add_render_callback(fn) {
        render_callbacks.push(fn);
    }
    // flush() calls callbacks in this order:
    // 1. All beforeUpdate callbacks, in order: parents before children
    // 2. All bind:this callbacks, in reverse order: children before parents.
    // 3. All afterUpdate callbacks, in order: parents before children. EXCEPT
    //    for afterUpdates called during the initial onMount, which are called in
    //    reverse order: children before parents.
    // Since callbacks might update component values, which could trigger another
    // call to flush(), the following steps guard against this:
    // 1. During beforeUpdate, any updated components will be added to the
    //    dirty_components array and will cause a reentrant call to flush(). Because
    //    the flush index is kept outside the function, the reentrant call will pick
    //    up where the earlier call left off and go through all dirty components. The
    //    current_component value is saved and restored so that the reentrant call will
    //    not interfere with the "parent" flush() call.
    // 2. bind:this callbacks cannot trigger new flush() calls.
    // 3. During afterUpdate, any updated components will NOT have their afterUpdate
    //    callback called a second time; the seen_callbacks set, outside the flush()
    //    function, guarantees this behavior.
    const seen_callbacks = new Set();
    let flushidx = 0; // Do *not* move this inside the flush() function
    function flush() {
        // Do not reenter flush while dirty components are updated, as this can
        // result in an infinite loop. Instead, let the inner flush handle it.
        // Reentrancy is ok afterwards for bindings etc.
        if (flushidx !== 0) {
            return;
        }
        const saved_component = current_component;
        do {
            // first, call beforeUpdate functions
            // and update components
            try {
                while (flushidx < dirty_components.length) {
                    const component = dirty_components[flushidx];
                    flushidx++;
                    set_current_component(component);
                    update(component.$$);
                }
            }
            catch (e) {
                // reset dirty state to not end up in a deadlocked state and then rethrow
                dirty_components.length = 0;
                flushidx = 0;
                throw e;
            }
            set_current_component(null);
            dirty_components.length = 0;
            flushidx = 0;
            while (binding_callbacks.length)
                binding_callbacks.pop()();
            // then, once components are updated, call
            // afterUpdate functions. This may cause
            // subsequent updates...
            for (let i = 0; i < render_callbacks.length; i += 1) {
                const callback = render_callbacks[i];
                if (!seen_callbacks.has(callback)) {
                    // ...so guard against infinite loops
                    seen_callbacks.add(callback);
                    callback();
                }
            }
            render_callbacks.length = 0;
        } while (dirty_components.length);
        while (flush_callbacks.length) {
            flush_callbacks.pop()();
        }
        update_scheduled = false;
        seen_callbacks.clear();
        set_current_component(saved_component);
    }
    function update($$) {
        if ($$.fragment !== null) {
            $$.update();
            run_all($$.before_update);
            const dirty = $$.dirty;
            $$.dirty = [-1];
            $$.fragment && $$.fragment.p($$.ctx, dirty);
            $$.after_update.forEach(add_render_callback);
        }
    }
    /**
     * Useful for example to execute remaining `afterUpdate` callbacks before executing `destroy`.
     */
    function flush_render_callbacks(fns) {
        const filtered = [];
        const targets = [];
        render_callbacks.forEach((c) => fns.indexOf(c) === -1 ? filtered.push(c) : targets.push(c));
        targets.forEach((c) => c());
        render_callbacks = filtered;
    }
    const outroing = new Set();
    let outros;
    function group_outros() {
        outros = {
            r: 0,
            c: [],
            p: outros // parent group
        };
    }
    function check_outros() {
        if (!outros.r) {
            run_all(outros.c);
        }
        outros = outros.p;
    }
    function transition_in(block, local) {
        if (block && block.i) {
            outroing.delete(block);
            block.i(local);
        }
    }
    function transition_out(block, local, detach, callback) {
        if (block && block.o) {
            if (outroing.has(block))
                return;
            outroing.add(block);
            outros.c.push(() => {
                outroing.delete(block);
                if (callback) {
                    if (detach)
                        block.d(1);
                    callback();
                }
            });
            block.o(local);
        }
        else if (callback) {
            callback();
        }
    }

    function destroy_block(block, lookup) {
        block.d(1);
        lookup.delete(block.key);
    }
    function outro_and_destroy_block(block, lookup) {
        transition_out(block, 1, 1, () => {
            lookup.delete(block.key);
        });
    }
    function update_keyed_each(old_blocks, dirty, get_key, dynamic, ctx, list, lookup, node, destroy, create_each_block, next, get_context) {
        let o = old_blocks.length;
        let n = list.length;
        let i = o;
        const old_indexes = {};
        while (i--)
            old_indexes[old_blocks[i].key] = i;
        const new_blocks = [];
        const new_lookup = new Map();
        const deltas = new Map();
        const updates = [];
        i = n;
        while (i--) {
            const child_ctx = get_context(ctx, list, i);
            const key = get_key(child_ctx);
            let block = lookup.get(key);
            if (!block) {
                block = create_each_block(key, child_ctx);
                block.c();
            }
            else if (dynamic) {
                // defer updates until all the DOM shuffling is done
                updates.push(() => block.p(child_ctx, dirty));
            }
            new_lookup.set(key, new_blocks[i] = block);
            if (key in old_indexes)
                deltas.set(key, Math.abs(i - old_indexes[key]));
        }
        const will_move = new Set();
        const did_move = new Set();
        function insert(block) {
            transition_in(block, 1);
            block.m(node, next);
            lookup.set(block.key, block);
            next = block.first;
            n--;
        }
        while (o && n) {
            const new_block = new_blocks[n - 1];
            const old_block = old_blocks[o - 1];
            const new_key = new_block.key;
            const old_key = old_block.key;
            if (new_block === old_block) {
                // do nothing
                next = new_block.first;
                o--;
                n--;
            }
            else if (!new_lookup.has(old_key)) {
                // remove old block
                destroy(old_block, lookup);
                o--;
            }
            else if (!lookup.has(new_key) || will_move.has(new_key)) {
                insert(new_block);
            }
            else if (did_move.has(old_key)) {
                o--;
            }
            else if (deltas.get(new_key) > deltas.get(old_key)) {
                did_move.add(new_key);
                insert(new_block);
            }
            else {
                will_move.add(old_key);
                o--;
            }
        }
        while (o--) {
            const old_block = old_blocks[o];
            if (!new_lookup.has(old_block.key))
                destroy(old_block, lookup);
        }
        while (n)
            insert(new_blocks[n - 1]);
        run_all(updates);
        return new_blocks;
    }
    function validate_each_keys(ctx, list, get_context, get_key) {
        const keys = new Set();
        for (let i = 0; i < list.length; i++) {
            const key = get_key(get_context(ctx, list, i));
            if (keys.has(key)) {
                throw new Error('Cannot have duplicate keys in a keyed each');
            }
            keys.add(key);
        }
    }
    function create_component(block) {
        block && block.c();
    }
    function mount_component(component, target, anchor, customElement) {
        const { fragment, after_update } = component.$$;
        fragment && fragment.m(target, anchor);
        if (!customElement) {
            // onMount happens before the initial afterUpdate
            add_render_callback(() => {
                const new_on_destroy = component.$$.on_mount.map(run).filter(is_function);
                // if the component was destroyed immediately
                // it will update the `$$.on_destroy` reference to `null`.
                // the destructured on_destroy may still reference to the old array
                if (component.$$.on_destroy) {
                    component.$$.on_destroy.push(...new_on_destroy);
                }
                else {
                    // Edge case - component was destroyed immediately,
                    // most likely as a result of a binding initialising
                    run_all(new_on_destroy);
                }
                component.$$.on_mount = [];
            });
        }
        after_update.forEach(add_render_callback);
    }
    function destroy_component(component, detaching) {
        const $$ = component.$$;
        if ($$.fragment !== null) {
            flush_render_callbacks($$.after_update);
            run_all($$.on_destroy);
            $$.fragment && $$.fragment.d(detaching);
            // TODO null out other refs, including component.$$ (but need to
            // preserve final state?)
            $$.on_destroy = $$.fragment = null;
            $$.ctx = [];
        }
    }
    function make_dirty(component, i) {
        if (component.$$.dirty[0] === -1) {
            dirty_components.push(component);
            schedule_update();
            component.$$.dirty.fill(0);
        }
        component.$$.dirty[(i / 31) | 0] |= (1 << (i % 31));
    }
    function init(component, options, instance, create_fragment, not_equal, props, append_styles, dirty = [-1]) {
        const parent_component = current_component;
        set_current_component(component);
        const $$ = component.$$ = {
            fragment: null,
            ctx: [],
            // state
            props,
            update: noop$2,
            not_equal,
            bound: blank_object(),
            // lifecycle
            on_mount: [],
            on_destroy: [],
            on_disconnect: [],
            before_update: [],
            after_update: [],
            context: new Map(options.context || (parent_component ? parent_component.$$.context : [])),
            // everything else
            callbacks: blank_object(),
            dirty,
            skip_bound: false,
            root: options.target || parent_component.$$.root
        };
        append_styles && append_styles($$.root);
        let ready = false;
        $$.ctx = instance
            ? instance(component, options.props || {}, (i, ret, ...rest) => {
                const value = rest.length ? rest[0] : ret;
                if ($$.ctx && not_equal($$.ctx[i], $$.ctx[i] = value)) {
                    if (!$$.skip_bound && $$.bound[i])
                        $$.bound[i](value);
                    if (ready)
                        make_dirty(component, i);
                }
                return ret;
            })
            : [];
        $$.update();
        ready = true;
        run_all($$.before_update);
        // `false` as a special case of no DOM component
        $$.fragment = create_fragment ? create_fragment($$.ctx) : false;
        if (options.target) {
            if (options.hydrate) {
                const nodes = children(options.target);
                // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
                $$.fragment && $$.fragment.l(nodes);
                nodes.forEach(detach);
            }
            else {
                // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
                $$.fragment && $$.fragment.c();
            }
            if (options.intro)
                transition_in(component.$$.fragment);
            mount_component(component, options.target, options.anchor, options.customElement);
            flush();
        }
        set_current_component(parent_component);
    }
    /**
     * Base class for Svelte components. Used when dev=false.
     */
    class SvelteComponent {
        $destroy() {
            destroy_component(this, 1);
            this.$destroy = noop$2;
        }
        $on(type, callback) {
            if (!is_function(callback)) {
                return noop$2;
            }
            const callbacks = (this.$$.callbacks[type] || (this.$$.callbacks[type] = []));
            callbacks.push(callback);
            return () => {
                const index = callbacks.indexOf(callback);
                if (index !== -1)
                    callbacks.splice(index, 1);
            };
        }
        $set($$props) {
            if (this.$$set && !is_empty($$props)) {
                this.$$.skip_bound = true;
                this.$$set($$props);
                this.$$.skip_bound = false;
            }
        }
    }

    function dispatch_dev(type, detail) {
        document.dispatchEvent(custom_event(type, Object.assign({ version: '3.59.2' }, detail), { bubbles: true }));
    }
    function append_dev(target, node) {
        dispatch_dev('SvelteDOMInsert', { target, node });
        append(target, node);
    }
    function insert_dev(target, node, anchor) {
        dispatch_dev('SvelteDOMInsert', { target, node, anchor });
        insert(target, node, anchor);
    }
    function detach_dev(node) {
        dispatch_dev('SvelteDOMRemove', { node });
        detach(node);
    }
    function listen_dev(node, event, handler, options, has_prevent_default, has_stop_propagation, has_stop_immediate_propagation) {
        const modifiers = options === true ? ['capture'] : options ? Array.from(Object.keys(options)) : [];
        if (has_prevent_default)
            modifiers.push('preventDefault');
        if (has_stop_propagation)
            modifiers.push('stopPropagation');
        if (has_stop_immediate_propagation)
            modifiers.push('stopImmediatePropagation');
        dispatch_dev('SvelteDOMAddEventListener', { node, event, handler, modifiers });
        const dispose = listen(node, event, handler, options);
        return () => {
            dispatch_dev('SvelteDOMRemoveEventListener', { node, event, handler, modifiers });
            dispose();
        };
    }
    function attr_dev(node, attribute, value) {
        attr(node, attribute, value);
        if (value == null)
            dispatch_dev('SvelteDOMRemoveAttribute', { node, attribute });
        else
            dispatch_dev('SvelteDOMSetAttribute', { node, attribute, value });
    }
    function prop_dev(node, property, value) {
        node[property] = value;
        dispatch_dev('SvelteDOMSetProperty', { node, property, value });
    }
    function set_data_dev(text, data) {
        data = '' + data;
        if (text.data === data)
            return;
        dispatch_dev('SvelteDOMSetData', { node: text, data });
        text.data = data;
    }
    function validate_each_argument(arg) {
        if (typeof arg !== 'string' && !(arg && typeof arg === 'object' && 'length' in arg)) {
            let msg = '{#each} only iterates over array-like objects.';
            if (typeof Symbol === 'function' && arg && Symbol.iterator in arg) {
                msg += ' You can use a spread to convert this iterable into an array.';
            }
            throw new Error(msg);
        }
    }
    function validate_slots(name, slot, keys) {
        for (const slot_key of Object.keys(slot)) {
            if (!~keys.indexOf(slot_key)) {
                console.warn(`<${name}> received an unexpected slot "${slot_key}".`);
            }
        }
    }
    /**
     * Base class for Svelte components with some minor dev-enhancements. Used when dev=true.
     */
    class SvelteComponentDev extends SvelteComponent {
        constructor(options) {
            if (!options || (!options.target && !options.$$inline)) {
                throw new Error("'target' is a required option");
            }
            super();
        }
        $destroy() {
            super.$destroy();
            this.$destroy = () => {
                console.warn('Component was already destroyed'); // eslint-disable-line no-console
            };
        }
        $capture_state() { }
        $inject_state() { }
    }

    /* src\VideoGradioComponentBrainstorming.svelte generated by Svelte v3.59.2 */

    const { console: console_1$h } = globals;
    const file$z = "src\\VideoGradioComponentBrainstorming.svelte";

    function get_each_context$p(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[15] = list[i];
    	return child_ctx;
    }

    // (85:4) {#each kitchenOptions as option}
    function create_each_block$p(ctx) {
    	let option;
    	let t_value = /*option*/ ctx[15] + "";
    	let t;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = /*option*/ ctx[15];
    			option.value = option.__value;
    			add_location(option, file$z, 85, 6, 2561);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$p.name,
    		type: "each",
    		source: "(85:4) {#each kitchenOptions as option}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$z(ctx) {
    	let h1;
    	let t1;
    	let div1;
    	let video;
    	let track;
    	let track_src_value;
    	let t2;
    	let div0;
    	let t3;
    	let t4;
    	let t5;
    	let canvas_1;
    	let t6;
    	let input;
    	let t7;
    	let div2;
    	let button;
    	let t9;
    	let select;
    	let mounted;
    	let dispose;
    	let each_value = /*kitchenOptions*/ ctx[4];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$p(get_each_context$p(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			h1 = element$1("h1");
    			h1.textContent = "AI Vision Assistant - Auto prompt HF agent + Cohere + Object detection - Text write on screen test";
    			t1 = space();
    			div1 = element$1("div");
    			video = element$1("video");
    			track = element$1("track");
    			t2 = space();
    			div0 = element$1("div");
    			t3 = text("Text Overlay Test and ");
    			t4 = text(/*TestVerb*/ ctx[3]);
    			t5 = space();
    			canvas_1 = element$1("canvas");
    			t6 = space();
    			input = element$1("input");
    			t7 = space();
    			div2 = element$1("div");
    			button = element$1("button");
    			button.textContent = "Verb Test";
    			t9 = space();
    			select = element$1("select");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(h1, file$z, 66, 0, 1800);
    			attr_dev(track, "kind", "captions");
    			if (!src_url_equal(track.src, track_src_value = "path/to/your/captions/file.vtt")) attr_dev(track, "src", track_src_value);
    			attr_dev(track, "srclang", "en");
    			attr_dev(track, "label", "English");
    			add_location(track, file$z, 72, 4, 2006);
    			attr_dev(video, "id", "videoCanvas");
    			video.autoplay = true;
    			attr_dev(video, "class", "svelte-ufd3fo");
    			add_location(video, file$z, 70, 2, 1965);
    			attr_dev(div0, "id", "overlayText");
    			attr_dev(div0, "class", "svelte-ufd3fo");
    			add_location(div0, file$z, 74, 2, 2111);
    			attr_dev(div1, "id", "videoContainer");
    			attr_dev(div1, "class", "svelte-ufd3fo");
    			add_location(div1, file$z, 68, 0, 1911);
    			attr_dev(canvas_1, "id", "myCanvas");
    			set_style(canvas_1, "border", "2px solid black");
    			attr_dev(canvas_1, "width", "500");
    			attr_dev(canvas_1, "height", "500");
    			add_location(canvas_1, file$z, 77, 0, 2186);
    			attr_dev(input, "type", "text");
    			add_location(input, file$z, 78, 0, 2294);
    			add_location(button, file$z, 82, 2, 2429);
    			if (/*selectedOption*/ ctx[0] === void 0) add_render_callback(() => /*select_change_handler*/ ctx[9].call(select));
    			add_location(select, file$z, 83, 2, 2479);
    			attr_dev(div2, "id", "frameForButtons");
    			add_location(div2, file$z, 81, 0, 2399);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h1, anchor);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, div1, anchor);
    			append_dev(div1, video);
    			append_dev(video, track);
    			append_dev(div1, t2);
    			append_dev(div1, div0);
    			append_dev(div0, t3);
    			append_dev(div0, t4);
    			insert_dev(target, t5, anchor);
    			insert_dev(target, canvas_1, anchor);
    			/*canvas_1_binding*/ ctx[7](canvas_1);
    			insert_dev(target, t6, anchor);
    			insert_dev(target, input, anchor);
    			set_input_value(input, /*textToDisplay*/ ctx[2]);
    			insert_dev(target, t7, anchor);
    			insert_dev(target, div2, anchor);
    			append_dev(div2, button);
    			append_dev(div2, t9);
    			append_dev(div2, select);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(select, null);
    				}
    			}

    			select_option(select, /*selectedOption*/ ctx[0], true);

    			if (!mounted) {
    				dispose = [
    					listen_dev(input, "input", /*input_input_handler*/ ctx[8]),
    					listen_dev(input, "input", /*updateText*/ ctx[6], false, false, false, false),
    					listen_dev(button, "click", /*testText*/ ctx[5], false, false, false, false),
    					listen_dev(select, "change", /*select_change_handler*/ ctx[9])
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*TestVerb*/ 8) set_data_dev(t4, /*TestVerb*/ ctx[3]);

    			if (dirty & /*textToDisplay*/ 4 && input.value !== /*textToDisplay*/ ctx[2]) {
    				set_input_value(input, /*textToDisplay*/ ctx[2]);
    			}

    			if (dirty & /*kitchenOptions*/ 16) {
    				each_value = /*kitchenOptions*/ ctx[4];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$p(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$p(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(select, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}

    			if (dirty & /*selectedOption, kitchenOptions*/ 17) {
    				select_option(select, /*selectedOption*/ ctx[0]);
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h1);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(div1);
    			if (detaching) detach_dev(t5);
    			if (detaching) detach_dev(canvas_1);
    			/*canvas_1_binding*/ ctx[7](null);
    			if (detaching) detach_dev(t6);
    			if (detaching) detach_dev(input);
    			if (detaching) detach_dev(t7);
    			if (detaching) detach_dev(div2);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$z.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function ocrTest() {
    	
    } // Logic for 'Test OCR' button

    function instance$z($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('VideoGradioComponentBrainstorming', slots, []);
    	let selectedOption = 'Stove - lu'; // default value
    	let kitchenOptions = ['Stove - lu', 'Refrigerator - bingxiang', 'Spoon - shao']; /* ... other options ... */
    	let canvas;
    	let ctx;
    	let textToDisplay = 'Initial Text';
    	let counter = 0;
    	let hud_text;
    	let TestVerb = "|Test verb|";

    	// Functions for button commands
    	function testText() {
    		// Logic for 'verb test' button
    		const randomIndex = Math.floor(Math.random() * kitchenOptions.length);

    		$$invalidate(3, TestVerb = kitchenOptions[randomIndex]);
    	}

    	// Image source
    	let imageSrc = 'path_to_your_image/Blooms-Taxonomy-650x366.jpg';

    	// Video stream setup
    	onMount(() => {
    		// Initialize video stream here
    		ctx = canvas.getContext('2d');

    		setInterval(
    			() => {
    				drawText(textToDisplay);
    			},
    			1000
    		); // Update every second
    	});

    	function drawText(hud_info) {
    		if (ctx) {
    			hud_text = "HUD Info Update: " + counter++ + " " + hud_info;
    			ctx.clearRect(0, 0, canvas.width, canvas.height); // Clear the canvas
    			ctx.font = '30px Arial';
    			ctx.fillStyle = 'black';
    			ctx.fillText(hud_text, 50, 50);
    		}
    	}

    	function updateText(event) {
    		$$invalidate(2, textToDisplay = event.target.value);
    		drawText();
    	}

    	// Camera as Video Stream
    	navigator.mediaDevices.getUserMedia({ video: true }).then(stream => {
    		const video = document.getElementById('videoCanvas');
    		video.srcObject = stream;
    	}).catch(err => {
    		console.error("Error accessing the camera: ", err);
    	});

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$h.warn(`<VideoGradioComponentBrainstorming> was created with unknown prop '${key}'`);
    	});

    	function canvas_1_binding($$value) {
    		binding_callbacks[$$value ? 'unshift' : 'push'](() => {
    			canvas = $$value;
    			$$invalidate(1, canvas);
    		});
    	}

    	function input_input_handler() {
    		textToDisplay = this.value;
    		$$invalidate(2, textToDisplay);
    	}

    	function select_change_handler() {
    		selectedOption = select_value(this);
    		$$invalidate(0, selectedOption);
    		$$invalidate(4, kitchenOptions);
    	}

    	$$self.$capture_state = () => ({
    		onMount,
    		selectedOption,
    		kitchenOptions,
    		canvas,
    		ctx,
    		textToDisplay,
    		counter,
    		hud_text,
    		TestVerb,
    		testText,
    		ocrTest,
    		imageSrc,
    		drawText,
    		updateText
    	});

    	$$self.$inject_state = $$props => {
    		if ('selectedOption' in $$props) $$invalidate(0, selectedOption = $$props.selectedOption);
    		if ('kitchenOptions' in $$props) $$invalidate(4, kitchenOptions = $$props.kitchenOptions);
    		if ('canvas' in $$props) $$invalidate(1, canvas = $$props.canvas);
    		if ('ctx' in $$props) ctx = $$props.ctx;
    		if ('textToDisplay' in $$props) $$invalidate(2, textToDisplay = $$props.textToDisplay);
    		if ('counter' in $$props) counter = $$props.counter;
    		if ('hud_text' in $$props) hud_text = $$props.hud_text;
    		if ('TestVerb' in $$props) $$invalidate(3, TestVerb = $$props.TestVerb);
    		if ('imageSrc' in $$props) imageSrc = $$props.imageSrc;
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		selectedOption,
    		canvas,
    		textToDisplay,
    		TestVerb,
    		kitchenOptions,
    		testText,
    		updateText,
    		canvas_1_binding,
    		input_input_handler,
    		select_change_handler
    	];
    }

    class VideoGradioComponentBrainstorming extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$z, create_fragment$z, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "VideoGradioComponentBrainstorming",
    			options,
    			id: create_fragment$z.name
    		});
    	}
    }

    const subscriber_queue = [];
    /**
     * Create a `Writable` store that allows both updating and reading by subscription.
     * @param {*=}value initial value
     * @param {StartStopNotifier=} start
     */
    function writable(value, start = noop$2) {
        let stop;
        const subscribers = new Set();
        function set(new_value) {
            if (safe_not_equal(value, new_value)) {
                value = new_value;
                if (stop) { // store is ready
                    const run_queue = !subscriber_queue.length;
                    for (const subscriber of subscribers) {
                        subscriber[1]();
                        subscriber_queue.push(subscriber, value);
                    }
                    if (run_queue) {
                        for (let i = 0; i < subscriber_queue.length; i += 2) {
                            subscriber_queue[i][0](subscriber_queue[i + 1]);
                        }
                        subscriber_queue.length = 0;
                    }
                }
            }
        }
        function update(fn) {
            set(fn(value));
        }
        function subscribe(run, invalidate = noop$2) {
            const subscriber = [run, invalidate];
            subscribers.add(subscriber);
            if (subscribers.size === 1) {
                stop = start(set) || noop$2;
            }
            run(value);
            return () => {
                subscribers.delete(subscriber);
                if (subscribers.size === 0 && stop) {
                    stop();
                    stop = null;
                }
            };
        }
        return { set, update, subscribe };
    }

    /* src\MovingDotPortfromReact.svelte generated by Svelte v3.59.2 */
    const file$y = "src\\MovingDotPortfromReact.svelte";

    function create_fragment$y(ctx) {
    	let button;

    	const block = {
    		c: function create() {
    			button = element$1("button");
    			attr_dev(button, "class", "MovingDot svelte-1mg0qyd");
    			set_style(button, "left", /*position*/ ctx[0].x + "px");
    			set_style(button, "top", /*position*/ ctx[0].y + "px");
    			attr_dev(button, "tabindex", "0");
    			add_location(button, file$y, 48, 0, 1573);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button, anchor);
    			/*button_binding*/ ctx[4](button);
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*position*/ 1) {
    				set_style(button, "left", /*position*/ ctx[0].x + "px");
    			}

    			if (dirty & /*position*/ 1) {
    				set_style(button, "top", /*position*/ ctx[0].y + "px");
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button);
    			/*button_binding*/ ctx[4](null);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$y.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    const step$2 = 10;

    function instance$y($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('MovingDotPortfromReact', slots, []);
    	let { position = { x: 0, y: 0 } } = $$props;
    	let { boundaries = { minX: 0, maxX: 100, minY: 0, maxY: 100 } } = $$props;
    	const dispatch = createEventDispatcher();
    	let dotElement; // Reference to the dot element

    	function moveDot(newX, newY) {
    		// Update position with a new object for Svelte reactivity
    		let boundedX = Math.max(boundaries.minX, Math.min(newX, boundaries.maxX));

    		let boundedY = Math.max(boundaries.minY, Math.min(newY, boundaries.maxY));

    		// Update position
    		$$invalidate(0, position = { x: boundedX, y: boundedY });

    		// Dispatch the move event with the new position
    		dispatch('move', position);
    	}

    	const handleKeyPress = e => {
    		e.preventDefault();
    		let newX = position.x;
    		let newY = position.y;

    		switch (e.key) {
    			case 'ArrowLeft':
    				newX -= step$2;
    				break;
    			case 'ArrowRight':
    				newX += step$2;
    				break;
    			case 'ArrowUp':
    				newY -= step$2;
    				break;
    			case 'ArrowDown':
    				newY += step$2;
    				break;
    		}

    		moveDot(newX, newY);
    	};

    	function focusDot() {
    		//On click for the space its imported into
    		dotElement.focus();
    	}

    	onMount(() => {
    		dotElement.addEventListener('keydown', handleKeyPress);
    	});

    	onDestroy(() => {
    		dotElement.removeEventListener('keydown', handleKeyPress);
    	});

    	const writable_props = ['position', 'boundaries'];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<MovingDotPortfromReact> was created with unknown prop '${key}'`);
    	});

    	function button_binding($$value) {
    		binding_callbacks[$$value ? 'unshift' : 'push'](() => {
    			dotElement = $$value;
    			$$invalidate(1, dotElement);
    		});
    	}

    	$$self.$$set = $$props => {
    		if ('position' in $$props) $$invalidate(0, position = $$props.position);
    		if ('boundaries' in $$props) $$invalidate(2, boundaries = $$props.boundaries);
    	};

    	$$self.$capture_state = () => ({
    		onMount,
    		onDestroy,
    		createEventDispatcher,
    		position,
    		boundaries,
    		step: step$2,
    		dispatch,
    		dotElement,
    		moveDot,
    		handleKeyPress,
    		focusDot
    	});

    	$$self.$inject_state = $$props => {
    		if ('position' in $$props) $$invalidate(0, position = $$props.position);
    		if ('boundaries' in $$props) $$invalidate(2, boundaries = $$props.boundaries);
    		if ('dotElement' in $$props) $$invalidate(1, dotElement = $$props.dotElement);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [position, dotElement, boundaries, focusDot, button_binding];
    }

    class MovingDotPortfromReact extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$y, create_fragment$y, safe_not_equal, { position: 0, boundaries: 2, focusDot: 3 });

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "MovingDotPortfromReact",
    			options,
    			id: create_fragment$y.name
    		});
    	}

    	get position() {
    		throw new Error("<MovingDotPortfromReact>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set position(value) {
    		throw new Error("<MovingDotPortfromReact>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	get boundaries() {
    		throw new Error("<MovingDotPortfromReact>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set boundaries(value) {
    		throw new Error("<MovingDotPortfromReact>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	get focusDot() {
    		return this.$$.ctx[3];
    	}

    	set focusDot(value) {
    		throw new Error("<MovingDotPortfromReact>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}
    }

    /* src\MovingDotTargetPortfromReact.svelte generated by Svelte v3.59.2 */

    const file$x = "src\\MovingDotTargetPortfromReact.svelte";

    function create_fragment$x(ctx) {
    	let div;

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			attr_dev(div, "class", "target svelte-100j21r");
    			set_style(div, "left", /*position*/ ctx[0].x + "px");
    			set_style(div, "top", /*position*/ ctx[0].y + "px");
    			add_location(div, file$x, 4, 0, 49);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*position*/ 1) {
    				set_style(div, "left", /*position*/ ctx[0].x + "px");
    			}

    			if (dirty & /*position*/ 1) {
    				set_style(div, "top", /*position*/ ctx[0].y + "px");
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$x.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$x($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('MovingDotTargetPortfromReact', slots, []);
    	let { position } = $$props;

    	$$self.$$.on_mount.push(function () {
    		if (position === undefined && !('position' in $$props || $$self.$$.bound[$$self.$$.props['position']])) {
    			console.warn("<MovingDotTargetPortfromReact> was created without expected prop 'position'");
    		}
    	});

    	const writable_props = ['position'];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<MovingDotTargetPortfromReact> was created with unknown prop '${key}'`);
    	});

    	$$self.$$set = $$props => {
    		if ('position' in $$props) $$invalidate(0, position = $$props.position);
    	};

    	$$self.$capture_state = () => ({ position });

    	$$self.$inject_state = $$props => {
    		if ('position' in $$props) $$invalidate(0, position = $$props.position);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [position];
    }

    class MovingDotTargetPortfromReact extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$x, create_fragment$x, safe_not_equal, { position: 0 });

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "MovingDotTargetPortfromReact",
    			options,
    			id: create_fragment$x.name
    		});
    	}

    	get position() {
    		throw new Error("<MovingDotTargetPortfromReact>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set position(value) {
    		throw new Error("<MovingDotTargetPortfromReact>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}
    }

    /* src\MovingDotSpaceSimpleModal.svelte generated by Svelte v3.59.2 */

    const { console: console_1$g } = globals;
    const file$w = "src\\MovingDotSpaceSimpleModal.svelte";

    function get_each_context$o(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[10] = list[i];
    	return child_ctx;
    }

    // (34:0) {#if isOpen}
    function create_if_block$j(ctx) {
    	let div3;
    	let div2;
    	let div0;
    	let h2;
    	let t0;
    	let t1;
    	let button;
    	let t3;
    	let div1;
    	let t4;
    	let t5;
    	let ul;
    	let mounted;
    	let dispose;
    	let each_value = /*items*/ ctx[3];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$o(get_each_context$o(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			div3 = element$1("div");
    			div2 = element$1("div");
    			div0 = element$1("div");
    			h2 = element$1("h2");
    			t0 = text(/*title*/ ctx[1]);
    			t1 = space();
    			button = element$1("button");
    			button.textContent = "×";
    			t3 = space();
    			div1 = element$1("div");
    			t4 = text(/*content*/ ctx[2]);
    			t5 = space();
    			ul = element$1("ul");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(h2, file$w, 37, 8, 1159);
    			add_location(button, file$w, 38, 8, 1185);
    			attr_dev(div0, "class", "modal-header svelte-m51ous");
    			add_location(div0, file$w, 36, 6, 1123);
    			attr_dev(ul, "class", "modal-items");
    			add_location(ul, file$w, 42, 8, 1309);
    			attr_dev(div1, "class", "modal-content svelte-m51ous");
    			add_location(div1, file$w, 40, 6, 1253);
    			attr_dev(div2, "class", "modal svelte-m51ous");
    			add_location(div2, file$w, 35, 4, 1096);
    			attr_dev(div3, "class", "modal-overlay svelte-m51ous");
    			add_location(div3, file$w, 34, 2, 1063);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div3, anchor);
    			append_dev(div3, div2);
    			append_dev(div2, div0);
    			append_dev(div0, h2);
    			append_dev(h2, t0);
    			append_dev(div0, t1);
    			append_dev(div0, button);
    			append_dev(div2, t3);
    			append_dev(div2, div1);
    			append_dev(div1, t4);
    			append_dev(div1, t5);
    			append_dev(div1, ul);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(ul, null);
    				}
    			}

    			if (!mounted) {
    				dispose = listen_dev(button, "click", /*closeModal*/ ctx[4], false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*title*/ 2) set_data_dev(t0, /*title*/ ctx[1]);
    			if (dirty & /*content*/ 4) set_data_dev(t4, /*content*/ ctx[2]);

    			if (dirty & /*handleItemClick, items*/ 40) {
    				each_value = /*items*/ ctx[3];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$o(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$o(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(ul, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div3);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$j.name,
    		type: "if",
    		source: "(34:0) {#if isOpen}",
    		ctx
    	});

    	return block;
    }

    // (44:10) {#each items as item}
    function create_each_block$o(ctx) {
    	let button;
    	let t_value = /*item*/ ctx[10].label + "";
    	let t;
    	let mounted;
    	let dispose;

    	function click_handler() {
    		return /*click_handler*/ ctx[9](/*item*/ ctx[10]);
    	}

    	const block = {
    		c: function create() {
    			button = element$1("button");
    			t = text(t_value);
    			add_location(button, file$w, 44, 12, 1380);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button, anchor);
    			append_dev(button, t);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", click_handler, false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;
    			if (dirty & /*items*/ 8 && t_value !== (t_value = /*item*/ ctx[10].label + "")) set_data_dev(t, t_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$o.name,
    		type: "each",
    		source: "(44:10) {#each items as item}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$w(ctx) {
    	let if_block_anchor;
    	let if_block = /*isOpen*/ ctx[0] && create_if_block$j(ctx);

    	const block = {
    		c: function create() {
    			if (if_block) if_block.c();
    			if_block_anchor = empty();
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			if (if_block) if_block.m(target, anchor);
    			insert_dev(target, if_block_anchor, anchor);
    		},
    		p: function update(ctx, [dirty]) {
    			if (/*isOpen*/ ctx[0]) {
    				if (if_block) {
    					if_block.p(ctx, dirty);
    				} else {
    					if_block = create_if_block$j(ctx);
    					if_block.c();
    					if_block.m(if_block_anchor.parentNode, if_block_anchor);
    				}
    			} else if (if_block) {
    				if_block.d(1);
    				if_block = null;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (if_block) if_block.d(detaching);
    			if (detaching) detach_dev(if_block_anchor);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$w.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$w($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('MovingDotSpaceSimpleModal', slots, []);
    	let { isOpen = false } = $$props;
    	let { title = '' } = $$props;
    	let { content = '' } = $$props;
    	let { items = [] } = $$props;
    	let { onClose } = $$props;
    	let { currentTheme = '' } = $$props;
    	let { themeActions } = $$props;

    	//import { themeActions } from './gameActions.js';
    	function closeModal() {
    		if (onClose) {
    			onClose();
    		}
    	}

    	function handleItemClick(item) {
    		// You can define what happens when an item is clicked, e.g., close modal, trigger an event, etc.
    		console.log("Item clicked:", item);

    		closeModal();

    		// if (themeActions[currentTheme] && themeActions[currentTheme][item.action]) {
    		//     themeActions[currentTheme][item.action]();
    		if (themeActions && themeActions[item.action]) {
    			themeActions[item.action]();
    		} else {
    			console.error(`Action "${item.action}" not found for theme "${currentTheme}".`);
    		}
    	}

    	$$self.$$.on_mount.push(function () {
    		if (onClose === undefined && !('onClose' in $$props || $$self.$$.bound[$$self.$$.props['onClose']])) {
    			console_1$g.warn("<MovingDotSpaceSimpleModal> was created without expected prop 'onClose'");
    		}

    		if (themeActions === undefined && !('themeActions' in $$props || $$self.$$.bound[$$self.$$.props['themeActions']])) {
    			console_1$g.warn("<MovingDotSpaceSimpleModal> was created without expected prop 'themeActions'");
    		}
    	});

    	const writable_props = [
    		'isOpen',
    		'title',
    		'content',
    		'items',
    		'onClose',
    		'currentTheme',
    		'themeActions'
    	];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$g.warn(`<MovingDotSpaceSimpleModal> was created with unknown prop '${key}'`);
    	});

    	const click_handler = item => handleItemClick(item);

    	$$self.$$set = $$props => {
    		if ('isOpen' in $$props) $$invalidate(0, isOpen = $$props.isOpen);
    		if ('title' in $$props) $$invalidate(1, title = $$props.title);
    		if ('content' in $$props) $$invalidate(2, content = $$props.content);
    		if ('items' in $$props) $$invalidate(3, items = $$props.items);
    		if ('onClose' in $$props) $$invalidate(6, onClose = $$props.onClose);
    		if ('currentTheme' in $$props) $$invalidate(7, currentTheme = $$props.currentTheme);
    		if ('themeActions' in $$props) $$invalidate(8, themeActions = $$props.themeActions);
    	};

    	$$self.$capture_state = () => ({
    		isOpen,
    		title,
    		content,
    		items,
    		onClose,
    		currentTheme,
    		themeActions,
    		closeModal,
    		handleItemClick
    	});

    	$$self.$inject_state = $$props => {
    		if ('isOpen' in $$props) $$invalidate(0, isOpen = $$props.isOpen);
    		if ('title' in $$props) $$invalidate(1, title = $$props.title);
    		if ('content' in $$props) $$invalidate(2, content = $$props.content);
    		if ('items' in $$props) $$invalidate(3, items = $$props.items);
    		if ('onClose' in $$props) $$invalidate(6, onClose = $$props.onClose);
    		if ('currentTheme' in $$props) $$invalidate(7, currentTheme = $$props.currentTheme);
    		if ('themeActions' in $$props) $$invalidate(8, themeActions = $$props.themeActions);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		isOpen,
    		title,
    		content,
    		items,
    		closeModal,
    		handleItemClick,
    		onClose,
    		currentTheme,
    		themeActions,
    		click_handler
    	];
    }

    class MovingDotSpaceSimpleModal extends SvelteComponentDev {
    	constructor(options) {
    		super(options);

    		init(this, options, instance$w, create_fragment$w, safe_not_equal, {
    			isOpen: 0,
    			title: 1,
    			content: 2,
    			items: 3,
    			onClose: 6,
    			currentTheme: 7,
    			themeActions: 8
    		});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "MovingDotSpaceSimpleModal",
    			options,
    			id: create_fragment$w.name
    		});
    	}

    	get isOpen() {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set isOpen(value) {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	get title() {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set title(value) {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	get content() {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set content(value) {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	get items() {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set items(value) {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	get onClose() {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set onClose(value) {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	get currentTheme() {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set currentTheme(value) {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	get themeActions() {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set themeActions(value) {
    		throw new Error("<MovingDotSpaceSimpleModal>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}
    }

    const ytsubuse = writable(false);
    const ytsubuseplayer = writable(false);
    const ytsubcurrentID = writable('IVJkOHTBPn0');
    const ytsubcurrenttext = writable('Currently none');

    const health = writable(100);
    const mana = writable(50);
    const strength = writable(10);
    const agility = writable(10);
    const intelligence = writable(10);
    const charisma = writable(10);
    const luck = writable(10);
    const money = writable(1000);
    const fightplayerHuman = createfightPlayer();
    const fightplayerComputer = createfightPlayer();
    const fightcurrentTurn = writable('human'); // 'human' or 'computer'
    const themedfightplayerHuman = createfightPlayer();
    const themedfightplayerComputer = createfightPlayer();
    const themedfightcurrentTurn = writable('human'); // 'human' or 'computer'
    const themeactions = writable({});
    const autogenconfigtest = writable({
        background: '/AutoGameBackgrounds/theme_background.png',
        inventory: [
            { type: "weapon", name: "Random waepon", description: "A powerful weapon." },
            // ... more space items
        ],
        skills: [
            { branch: "Skill Group 1", name: "Skill One", learned: false },
            // ... more space skills
        ],
        persistentTargets: [
            { name: "Background Target 1", x: 500, y: 500, collisionType: "alert", collisiontext: "First Test"},
        ],
        actions: [],
    });

    const autogenconfigtestsmmdoalfromgraph = writable({
        background: '/AutoGameBackgrounds/theme_background.png',
        inventory: [
            { type: "weapon", name: "Random waepon", description: "A powerful weapon." },
            // ... more space items
        ],
        skills: [
            { branch: "Skill Group 1", name: "Skill One", learned: false },
            // ... more space skills
        ],
        persistentTargets: [
            { name: "Background Target 1", x: 500, y: 500, collisionType: "alert", collisiontext: "First Test"},
        ],
        actions: [],
        story: [
            {
                part: 0,
                objectives: [],
                targets:  [
                { name: "Target 1", x: 50, y: 50, collisionType: "alert", collisiontext: "First Test",
                    subtargets: [
                        { name: "Target 1 sub 1", x: 100, y: 75, collisionType: "alert", collisiontext: "First Test in Sub of First Test"} ,
                    ],
                }],
            },
        ],
    });

    function createfightPlayer() {
        return writable({
            fighthealth: 100,
            fightstamina: 100,
            fightisBlocking: false,
            fightcooldowns: {
                attack: 0,
                specialAttack: 0,
            },
        });
    }

    const inventory = writable([
        // Sample inventory items
        { type: "weapon", name: "Sword", description: "A sharp blade." },
        { type: "armor", name: "Shield", description: "Protects against attacks." },
        { type: "consumable", name: "Health Potion", description: "Restores health." },
        // Add more items as needed
    ]);

    const skills = writable([
        // Sample skills
        { branch: "Combat", name: "Basic Attack", learned: false },
        { branch: "Magic", name: "Fireball", learned: false },
        { branch: "Stealth", name: "Sneak", learned: false },
        // Add more skills as needed
    ]);

    const objectives = writable([
        // Sample objectives
        { id: "Seperate", name: "Visit Mountain Peak", complete: false },
        { id: "Mission 1", name: "Intercept The Courier (Search the Locations)", complete: false },
        { id: "Mission 1", name: "Deliver the package to Market Stall", complete: false },
        // Add more objectives as needed
    ]);

    const targets = writable([
        { name: "Target 1", x: 50, y: 50, collisionType: "alert", collisiontext: "First Test"},
        { name: "Target 2", x: 100, y: 100, collisionType: "", collisiontext: ""},
        { name: "Entrance", x: 995, y: 660, collisionType: "modal", modalConfig: {
            title: "Entrance",
            content: "You've reached the Entrance. What's your next step?",
            actions: [
                {
                    label: "Ask for guidance on next move",
                    action: "askforDirections"
                },
                {
                    label: "Buy an Axe",
                    action: "buyAxeAlert"
                },
                // ... more actions if necessary
            ]},
        },
        { name: "Market Stall", x: 200, y: 300, collisionType: "", collisiontext: "" },   // A market stall in the bustling market area.
        { name: "Inn Entrance", x: 400, y: 450, collisionType: "", collisiontext: "" },   // The entrance to the inn for rest or information.
        { name: "Town Hall", x: 600, y: 350, collisionType: "", collisiontext: "" },      // The entrance to the town hall for quests.
        { name: "Fountain", x: 500, y: 500, collisionType: "", collisiontext: "" },       // A fountain in the town square as a meeting point.
        { name: "Bridge", x: 1100, y: 700, collisionType: "", collisiontext: "" },        // A bridge in the mystical forest area.
        { name: "Waterfall", x: 1300, y: 800, collisionType: "", collisiontext: "" },     // A waterfall that could hide secrets or treasures.
        { name: "Mountain Peak", x: 1500, y: 100, collisionType: "", collisiontext: "" },
    ]);

    function addInventoryItem(item) {
        inventory.update(items => {
            return [...items, item];
        });
    }

    /* src\SimpleStateMachineModal.svelte generated by Svelte v3.59.2 */

    const { Error: Error_1, Object: Object_1$7, console: console_1$f } = globals;
    const file$v = "src\\SimpleStateMachineModal.svelte";

    function get_each_context$n(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[17] = list[i];
    	return child_ctx;
    }

    // (85:0) {#if isOpen}
    function create_if_block$i(ctx) {
    	let div3;
    	let div2;
    	let div0;
    	let h2;
    	let t0;
    	let t1;
    	let button;
    	let t3;
    	let div1;
    	let t4;
    	let t5;
    	let ul;
    	let t6;
    	let mounted;
    	let dispose;
    	let each_value = /*items*/ ctx[3];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$n(get_each_context$n(ctx, each_value, i));
    	}

    	let if_block = /*modalimg*/ ctx[4] && create_if_block_1$8(ctx);

    	const block = {
    		c: function create() {
    			div3 = element$1("div");
    			div2 = element$1("div");
    			div0 = element$1("div");
    			h2 = element$1("h2");
    			t0 = text(/*title*/ ctx[1]);
    			t1 = space();
    			button = element$1("button");
    			button.textContent = "×";
    			t3 = space();
    			div1 = element$1("div");
    			t4 = text(/*content*/ ctx[2]);
    			t5 = space();
    			ul = element$1("ul");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t6 = space();
    			if (if_block) if_block.c();
    			add_location(h2, file$v, 88, 10, 3296);
    			add_location(button, file$v, 89, 10, 3324);
    			attr_dev(div0, "class", "modal-header svelte-13fuaz8");
    			add_location(div0, file$v, 87, 6, 3258);
    			attr_dev(ul, "class", "modal-items");
    			add_location(ul, file$v, 93, 10, 3452);
    			attr_dev(div1, "class", "modal-content svelte-13fuaz8");
    			add_location(div1, file$v, 91, 6, 3392);
    			attr_dev(div2, "class", "modal svelte-13fuaz8");
    			add_location(div2, file$v, 86, 4, 3231);
    			attr_dev(div3, "class", "modal-overlay svelte-13fuaz8");
    			add_location(div3, file$v, 85, 2, 3198);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div3, anchor);
    			append_dev(div3, div2);
    			append_dev(div2, div0);
    			append_dev(div0, h2);
    			append_dev(h2, t0);
    			append_dev(div0, t1);
    			append_dev(div0, button);
    			append_dev(div2, t3);
    			append_dev(div2, div1);
    			append_dev(div1, t4);
    			append_dev(div1, t5);
    			append_dev(div1, ul);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(ul, null);
    				}
    			}

    			append_dev(div1, t6);
    			if (if_block) if_block.m(div1, null);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", /*closeModal*/ ctx[6], false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*title*/ 2) set_data_dev(t0, /*title*/ ctx[1]);
    			if (dirty & /*content*/ 4) set_data_dev(t4, /*content*/ ctx[2]);

    			if (dirty & /*handleItemClick, items*/ 136) {
    				each_value = /*items*/ ctx[3];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$n(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$n(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(ul, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}

    			if (/*modalimg*/ ctx[4]) {
    				if (if_block) {
    					if_block.p(ctx, dirty);
    				} else {
    					if_block = create_if_block_1$8(ctx);
    					if_block.c();
    					if_block.m(div1, null);
    				}
    			} else if (if_block) {
    				if_block.d(1);
    				if_block = null;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div3);
    			destroy_each(each_blocks, detaching);
    			if (if_block) if_block.d();
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$i.name,
    		type: "if",
    		source: "(85:0) {#if isOpen}",
    		ctx
    	});

    	return block;
    }

    // (95:10) {#each items as item}
    function create_each_block$n(ctx) {
    	let button;
    	let t_value = /*item*/ ctx[17].label + "";
    	let t;
    	let mounted;
    	let dispose;

    	function click_handler() {
    		return /*click_handler*/ ctx[11](/*item*/ ctx[17]);
    	}

    	const block = {
    		c: function create() {
    			button = element$1("button");
    			t = text(t_value);
    			add_location(button, file$v, 95, 14, 3525);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button, anchor);
    			append_dev(button, t);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", click_handler, false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;
    			if (dirty & /*items*/ 8 && t_value !== (t_value = /*item*/ ctx[17].label + "")) set_data_dev(t, t_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$n.name,
    		type: "each",
    		source: "(95:10) {#each items as item}",
    		ctx
    	});

    	return block;
    }

    // (99:10) {#if modalimg}
    function create_if_block_1$8(ctx) {
    	let img;
    	let img_src_value;

    	const block = {
    		c: function create() {
    			img = element$1("img");
    			if (!src_url_equal(img.src, img_src_value = /*modalimg*/ ctx[4])) attr_dev(img, "src", img_src_value);
    			attr_dev(img, "alt", "");
    			add_location(img, file$v, 98, 25, 3656);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, img, anchor);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*modalimg*/ 16 && !src_url_equal(img.src, img_src_value = /*modalimg*/ ctx[4])) {
    				attr_dev(img, "src", img_src_value);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(img);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_1$8.name,
    		type: "if",
    		source: "(99:10) {#if modalimg}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$v(ctx) {
    	let if_block_anchor;
    	let if_block = /*isOpen*/ ctx[0] && create_if_block$i(ctx);

    	const block = {
    		c: function create() {
    			if (if_block) if_block.c();
    			if_block_anchor = empty();
    		},
    		l: function claim(nodes) {
    			throw new Error_1("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			if (if_block) if_block.m(target, anchor);
    			insert_dev(target, if_block_anchor, anchor);
    		},
    		p: function update(ctx, [dirty]) {
    			if (/*isOpen*/ ctx[0]) {
    				if (if_block) {
    					if_block.p(ctx, dirty);
    				} else {
    					if_block = create_if_block$i(ctx);
    					if_block.c();
    					if_block.m(if_block_anchor.parentNode, if_block_anchor);
    				}
    			} else if (if_block) {
    				if_block.d(1);
    				if_block = null;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (if_block) if_block.d(detaching);
    			if (detaching) detach_dev(if_block_anchor);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$v.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$v($$self, $$props, $$invalidate) {
    	let $themeactions;
    	let $state;
    	validate_store(themeactions, 'themeactions');
    	component_subscribe($$self, themeactions, $$value => $$invalidate(13, $themeactions = $$value));
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('SimpleStateMachineModal', slots, []);
    	let { modalStates } = $$props;
    	let { isOpen = false } = $$props;

    	//let state = writable("default"); // Manage modal state
    	//let title = modalStates.default.title; // Define title
    	//let content = modalStates.default.content; // Define content
    	//let items = modalStates.default.items; // Define items
    	//let consequences = modalStates.default.consequences //modalStates.default.consequences; // Define consequences
    	const [firstStateKey, firstState] = Object.entries(modalStates)[0] || [];

    	let state = writable(firstStateKey); // Manage modal state
    	validate_store(state, 'state');
    	component_subscribe($$self, state, value => $$invalidate(10, $state = value));
    	let title = firstState ? firstState.title : ''; // modalStates.default.title; // Define title
    	let content = firstState ? firstState.content : ''; // Define content
    	let items = firstState ? firstState.items : ''; // Define items
    	let consequences = firstState ? firstState.consequences : ''; //modalStates.default.consequences; // Define consequences
    	let { onClose } = $$props;
    	let modalimg = firstState ? firstState.modalimg : '';

    	function closeModal() {
    		if (onClose) {
    			onClose();
    		}
    	}

    	function handleItemClick(item) {
    		// Decide what happens based on the item action
    		switch (item.action) {
    			case 'defined modal button':
    				console.log('Figure out how to call the imported store items here and delete the test ones below');
    				break;
    			case 'buyAxe':
    				console.log("Axe purchased");
    				closeModal();
    				break;
    			case 'guidance':
    			case 'forest':
    				console.log("Went to the forest. Leaves were blowing everywhere");
    			default:
    				$$invalidate(4, modalimg = '');
    				updateModal(item.action);
    		} //console.log("Action not recognized");
    	} //Execute the consequences

    	function updateModal(newState) {
    		if (modalStates[newState]) {
    			$$invalidate(1, title = modalStates[newState].title);
    			$$invalidate(2, content = modalStates[newState].content);
    			$$invalidate(3, items = modalStates[newState].items);
    			consequences = modalStates[newState].consequences;

    			//consequences.forEach(func => func()); // Execute each function in consequences
    			consequences.forEach(consequence => {
    				if ($themeactions[consequence]) {
    					$themeactions[consequence](); // Execute consequence functions by name   
    				}

    				if (modalStates[newState].modalimg) {
    					$$invalidate(4, modalimg = modalStates[newState].modalimg);
    				} else {
    					$$invalidate(4, modalimg = '');
    				}
    			});
    		} else {
    			throw new Error(`modalStates doesn't have a property with the key "${newState}"`);
    		}
    	}

    	$$self.$$.on_mount.push(function () {
    		if (modalStates === undefined && !('modalStates' in $$props || $$self.$$.bound[$$self.$$.props['modalStates']])) {
    			console_1$f.warn("<SimpleStateMachineModal> was created without expected prop 'modalStates'");
    		}

    		if (onClose === undefined && !('onClose' in $$props || $$self.$$.bound[$$self.$$.props['onClose']])) {
    			console_1$f.warn("<SimpleStateMachineModal> was created without expected prop 'onClose'");
    		}
    	});

    	const writable_props = ['modalStates', 'isOpen', 'onClose'];

    	Object_1$7.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$f.warn(`<SimpleStateMachineModal> was created with unknown prop '${key}'`);
    	});

    	const click_handler = item => handleItemClick(item);

    	$$self.$$set = $$props => {
    		if ('modalStates' in $$props) $$invalidate(8, modalStates = $$props.modalStates);
    		if ('isOpen' in $$props) $$invalidate(0, isOpen = $$props.isOpen);
    		if ('onClose' in $$props) $$invalidate(9, onClose = $$props.onClose);
    	};

    	$$self.$capture_state = () => ({
    		writable,
    		themeactions,
    		modalStates,
    		isOpen,
    		firstStateKey,
    		firstState,
    		state,
    		title,
    		content,
    		items,
    		consequences,
    		onClose,
    		modalimg,
    		closeModal,
    		handleItemClick,
    		updateModal,
    		$themeactions,
    		$state
    	});

    	$$self.$inject_state = $$props => {
    		if ('modalStates' in $$props) $$invalidate(8, modalStates = $$props.modalStates);
    		if ('isOpen' in $$props) $$invalidate(0, isOpen = $$props.isOpen);
    		if ('state' in $$props) $$invalidate(5, state = $$props.state);
    		if ('title' in $$props) $$invalidate(1, title = $$props.title);
    		if ('content' in $$props) $$invalidate(2, content = $$props.content);
    		if ('items' in $$props) $$invalidate(3, items = $$props.items);
    		if ('consequences' in $$props) consequences = $$props.consequences;
    		if ('onClose' in $$props) $$invalidate(9, onClose = $$props.onClose);
    		if ('modalimg' in $$props) $$invalidate(4, modalimg = $$props.modalimg);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	$$self.$$.update = () => {
    		if ($$self.$$.dirty & /*$state*/ 1024) {
    			// Reactive statements to update the modal based on state changes
    			(updateModal($state));
    		}
    	};

    	return [
    		isOpen,
    		title,
    		content,
    		items,
    		modalimg,
    		state,
    		closeModal,
    		handleItemClick,
    		modalStates,
    		onClose,
    		$state,
    		click_handler
    	];
    }

    class SimpleStateMachineModal extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$v, create_fragment$v, safe_not_equal, { modalStates: 8, isOpen: 0, onClose: 9 });

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "SimpleStateMachineModal",
    			options,
    			id: create_fragment$v.name
    		});
    	}

    	get modalStates() {
    		throw new Error_1("<SimpleStateMachineModal>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set modalStates(value) {
    		throw new Error_1("<SimpleStateMachineModal>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	get isOpen() {
    		throw new Error_1("<SimpleStateMachineModal>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set isOpen(value) {
    		throw new Error_1("<SimpleStateMachineModal>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	get onClose() {
    		throw new Error_1("<SimpleStateMachineModal>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set onClose(value) {
    		throw new Error_1("<SimpleStateMachineModal>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}
    }

    /* src\MovingDotStatDisplay.svelte generated by Svelte v3.59.2 */

    const file$u = "src\\MovingDotStatDisplay.svelte";

    function get_each_context$m(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[13] = list[i];
    	return child_ctx;
    }

    function get_each_context_1$e(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[16] = list[i];
    	return child_ctx;
    }

    function get_each_context_2$7(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[16] = list[i];
    	return child_ctx;
    }

    // (14:6) {#each $objectives as item}
    function create_each_block_2$7(ctx) {
    	let li;
    	let t0_value = /*item*/ ctx[16].id + "";
    	let t0;
    	let t1;
    	let t2_value = /*item*/ ctx[16].name + "";
    	let t2;
    	let t3;
    	let t4_value = (/*item*/ ctx[16].complete ? '(Completed)' : '') + "";
    	let t4;
    	let li_class_value;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t0 = text(t0_value);
    			t1 = text(": ");
    			t2 = text(t2_value);
    			t3 = space();
    			t4 = text(t4_value);
    			attr_dev(li, "class", li_class_value = "" + (null_to_empty(/*item*/ ctx[16].complete ? 'completedobjetive' : '') + " svelte-w7krpq"));
    			add_location(li, file$u, 15, 8, 453);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t0);
    			append_dev(li, t1);
    			append_dev(li, t2);
    			append_dev(li, t3);
    			append_dev(li, t4);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*$objectives*/ 1 && t0_value !== (t0_value = /*item*/ ctx[16].id + "")) set_data_dev(t0, t0_value);
    			if (dirty & /*$objectives*/ 1 && t2_value !== (t2_value = /*item*/ ctx[16].name + "")) set_data_dev(t2, t2_value);
    			if (dirty & /*$objectives*/ 1 && t4_value !== (t4_value = (/*item*/ ctx[16].complete ? '(Completed)' : '') + "")) set_data_dev(t4, t4_value);

    			if (dirty & /*$objectives*/ 1 && li_class_value !== (li_class_value = "" + (null_to_empty(/*item*/ ctx[16].complete ? 'completedobjetive' : '') + " svelte-w7krpq"))) {
    				attr_dev(li, "class", li_class_value);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_2$7.name,
    		type: "each",
    		source: "(14:6) {#each $objectives as item}",
    		ctx
    	});

    	return block;
    }

    // (26:8) {#each $inventory as item}
    function create_each_block_1$e(ctx) {
    	let button;
    	let t0_value = /*item*/ ctx[16].name + "";
    	let t0;
    	let t1;
    	let mounted;
    	let dispose;

    	function click_handler() {
    		return /*click_handler*/ ctx[12](/*item*/ ctx[16]);
    	}

    	const block = {
    		c: function create() {
    			button = element$1("button");
    			t0 = text(t0_value);
    			t1 = space();
    			attr_dev(button, "class", "skill");
    			add_location(button, file$u, 26, 10, 813);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button, anchor);
    			append_dev(button, t0);
    			append_dev(button, t1);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", click_handler, false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;
    			if (dirty & /*$inventory*/ 2 && t0_value !== (t0_value = /*item*/ ctx[16].name + "")) set_data_dev(t0, t0_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$e.name,
    		type: "each",
    		source: "(26:8) {#each $inventory as item}",
    		ctx
    	});

    	return block;
    }

    // (50:8) {#each $skills as skill}
    function create_each_block$m(ctx) {
    	let li;
    	let t0_value = /*skill*/ ctx[13].name + "";
    	let t0;
    	let t1;
    	let t2_value = /*skill*/ ctx[13].branch + "";
    	let t2;
    	let t3;
    	let t4_value = (/*skill*/ ctx[13].learned ? 'Yes' : 'No') + "";
    	let t4;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t0 = text(t0_value);
    			t1 = text(": ");
    			t2 = text(t2_value);
    			t3 = text(" - Learned: ");
    			t4 = text(t4_value);
    			add_location(li, file$u, 50, 10, 1580);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t0);
    			append_dev(li, t1);
    			append_dev(li, t2);
    			append_dev(li, t3);
    			append_dev(li, t4);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*$skills*/ 1024 && t0_value !== (t0_value = /*skill*/ ctx[13].name + "")) set_data_dev(t0, t0_value);
    			if (dirty & /*$skills*/ 1024 && t2_value !== (t2_value = /*skill*/ ctx[13].branch + "")) set_data_dev(t2, t2_value);
    			if (dirty & /*$skills*/ 1024 && t4_value !== (t4_value = (/*skill*/ ctx[13].learned ? 'Yes' : 'No') + "")) set_data_dev(t4, t4_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$m.name,
    		type: "each",
    		source: "(50:8) {#each $skills as skill}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$u(ctx) {
    	let div10;
    	let div0;
    	let h10;
    	let t1;
    	let ul0;
    	let t2;
    	let div2;
    	let div1;
    	let h20;
    	let t4;
    	let h60;
    	let t6;
    	let ul1;
    	let t7;
    	let div7;
    	let div6;
    	let h11;
    	let t9;
    	let h61;
    	let t11;
    	let div3;
    	let t12;
    	let t13;
    	let t14;
    	let t15;
    	let t16;
    	let t17;
    	let t18;
    	let t19;
    	let t20;
    	let t21;
    	let t22;
    	let t23;
    	let t24;
    	let div4;
    	let t25;
    	let t26;
    	let t27;
    	let div5;
    	let t28;
    	let t29;
    	let t30;
    	let div9;
    	let div8;
    	let h21;
    	let t32;
    	let h62;
    	let t34;
    	let ul2;
    	let each_value_2 = /*$objectives*/ ctx[0];
    	validate_each_argument(each_value_2);
    	let each_blocks_2 = [];

    	for (let i = 0; i < each_value_2.length; i += 1) {
    		each_blocks_2[i] = create_each_block_2$7(get_each_context_2$7(ctx, each_value_2, i));
    	}

    	let each_value_1 = /*$inventory*/ ctx[1];
    	validate_each_argument(each_value_1);
    	let each_blocks_1 = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks_1[i] = create_each_block_1$e(get_each_context_1$e(ctx, each_value_1, i));
    	}

    	let each_value = /*$skills*/ ctx[10];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$m(get_each_context$m(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			div10 = element$1("div");
    			div0 = element$1("div");
    			h10 = element$1("h1");
    			h10.textContent = "Objectives";
    			t1 = space();
    			ul0 = element$1("ul");

    			for (let i = 0; i < each_blocks_2.length; i += 1) {
    				each_blocks_2[i].c();
    			}

    			t2 = space();
    			div2 = element$1("div");
    			div1 = element$1("div");
    			h20 = element$1("h2");
    			h20.textContent = "Inventory";
    			t4 = space();
    			h60 = element$1("h6");
    			h60.textContent = "Affects movement and modal action options";
    			t6 = space();
    			ul1 = element$1("ul");

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				each_blocks_1[i].c();
    			}

    			t7 = space();
    			div7 = element$1("div");
    			div6 = element$1("div");
    			h11 = element$1("h1");
    			h11.textContent = "Player Stats";
    			t9 = space();
    			h61 = element$1("h6");
    			h61.textContent = "Affects how Modal Interactions";
    			t11 = space();
    			div3 = element$1("div");
    			t12 = text("Health: ");
    			t13 = text(/*$health*/ ctx[2]);
    			t14 = text(" Mana: ");
    			t15 = text(/*$mana*/ ctx[3]);
    			t16 = text(" Strength: ");
    			t17 = text(/*$strength*/ ctx[4]);
    			t18 = text(" Agility: ");
    			t19 = text(/*$agility*/ ctx[5]);
    			t20 = text(" Intelligence: ");
    			t21 = text(/*$intelligence*/ ctx[6]);
    			t22 = text(" Charisma: ");
    			t23 = text(/*$charisma*/ ctx[7]);
    			t24 = space();
    			div4 = element$1("div");
    			t25 = text("Luck: ");
    			t26 = text(/*$luck*/ ctx[8]);
    			t27 = space();
    			div5 = element$1("div");
    			t28 = text("Money: ");
    			t29 = text(/*$money*/ ctx[9]);
    			t30 = space();
    			div9 = element$1("div");
    			div8 = element$1("div");
    			h21 = element$1("h2");
    			h21.textContent = "Skill Tree / Abilities";
    			t32 = space();
    			h62 = element$1("h6");
    			h62.textContent = "Affects effectiveness of inventory";
    			t34 = space();
    			ul2 = element$1("ul");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(h10, file$u, 11, 4, 329);
    			add_location(ul0, file$u, 12, 4, 354);
    			attr_dev(div0, "class", "grid-statsitem svelte-w7krpq");
    			add_location(div0, file$u, 10, 2, 295);
    			add_location(h20, file$u, 22, 6, 677);
    			add_location(h60, file$u, 23, 6, 703);
    			add_location(ul1, file$u, 24, 6, 761);
    			attr_dev(div1, "class", "inventory svelte-w7krpq");
    			add_location(div1, file$u, 21, 4, 646);
    			attr_dev(div2, "class", "grid-statsitem svelte-w7krpq");
    			add_location(div2, file$u, 20, 2, 612);
    			add_location(h11, file$u, 36, 6, 1066);
    			add_location(h61, file$u, 37, 6, 1095);
    			add_location(div3, file$u, 38, 6, 1142);
    			add_location(div4, file$u, 39, 6, 1286);
    			add_location(div5, file$u, 40, 6, 1318);
    			attr_dev(div6, "class", "stats svelte-w7krpq");
    			add_location(div6, file$u, 35, 4, 1039);
    			attr_dev(div7, "class", "grid-statsitem svelte-w7krpq");
    			add_location(div7, file$u, 34, 2, 1005);
    			add_location(h21, file$u, 46, 6, 1440);
    			add_location(h62, file$u, 47, 6, 1479);
    			add_location(ul2, file$u, 48, 6, 1530);
    			attr_dev(div8, "class", "skill-tree svelte-w7krpq");
    			add_location(div8, file$u, 45, 4, 1408);
    			attr_dev(div9, "class", "grid-statsitem svelte-w7krpq");
    			add_location(div9, file$u, 44, 2, 1374);
    			attr_dev(div10, "class", "grid-statsContainer svelte-w7krpq");
    			add_location(div10, file$u, 9, 0, 258);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div10, anchor);
    			append_dev(div10, div0);
    			append_dev(div0, h10);
    			append_dev(div0, t1);
    			append_dev(div0, ul0);

    			for (let i = 0; i < each_blocks_2.length; i += 1) {
    				if (each_blocks_2[i]) {
    					each_blocks_2[i].m(ul0, null);
    				}
    			}

    			append_dev(div10, t2);
    			append_dev(div10, div2);
    			append_dev(div2, div1);
    			append_dev(div1, h20);
    			append_dev(div1, t4);
    			append_dev(div1, h60);
    			append_dev(div1, t6);
    			append_dev(div1, ul1);

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				if (each_blocks_1[i]) {
    					each_blocks_1[i].m(ul1, null);
    				}
    			}

    			append_dev(div10, t7);
    			append_dev(div10, div7);
    			append_dev(div7, div6);
    			append_dev(div6, h11);
    			append_dev(div6, t9);
    			append_dev(div6, h61);
    			append_dev(div6, t11);
    			append_dev(div6, div3);
    			append_dev(div3, t12);
    			append_dev(div3, t13);
    			append_dev(div3, t14);
    			append_dev(div3, t15);
    			append_dev(div3, t16);
    			append_dev(div3, t17);
    			append_dev(div3, t18);
    			append_dev(div3, t19);
    			append_dev(div3, t20);
    			append_dev(div3, t21);
    			append_dev(div3, t22);
    			append_dev(div3, t23);
    			append_dev(div6, t24);
    			append_dev(div6, div4);
    			append_dev(div4, t25);
    			append_dev(div4, t26);
    			append_dev(div6, t27);
    			append_dev(div6, div5);
    			append_dev(div5, t28);
    			append_dev(div5, t29);
    			append_dev(div10, t30);
    			append_dev(div10, div9);
    			append_dev(div9, div8);
    			append_dev(div8, h21);
    			append_dev(div8, t32);
    			append_dev(div8, h62);
    			append_dev(div8, t34);
    			append_dev(div8, ul2);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(ul2, null);
    				}
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*$objectives*/ 1) {
    				each_value_2 = /*$objectives*/ ctx[0];
    				validate_each_argument(each_value_2);
    				let i;

    				for (i = 0; i < each_value_2.length; i += 1) {
    					const child_ctx = get_each_context_2$7(ctx, each_value_2, i);

    					if (each_blocks_2[i]) {
    						each_blocks_2[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_2[i] = create_each_block_2$7(child_ctx);
    						each_blocks_2[i].c();
    						each_blocks_2[i].m(ul0, null);
    					}
    				}

    				for (; i < each_blocks_2.length; i += 1) {
    					each_blocks_2[i].d(1);
    				}

    				each_blocks_2.length = each_value_2.length;
    			}

    			if (dirty & /*toggleSkill, alert, $inventory*/ 2050) {
    				each_value_1 = /*$inventory*/ ctx[1];
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$e(ctx, each_value_1, i);

    					if (each_blocks_1[i]) {
    						each_blocks_1[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_1[i] = create_each_block_1$e(child_ctx);
    						each_blocks_1[i].c();
    						each_blocks_1[i].m(ul1, null);
    					}
    				}

    				for (; i < each_blocks_1.length; i += 1) {
    					each_blocks_1[i].d(1);
    				}

    				each_blocks_1.length = each_value_1.length;
    			}

    			if (dirty & /*$health*/ 4) set_data_dev(t13, /*$health*/ ctx[2]);
    			if (dirty & /*$mana*/ 8) set_data_dev(t15, /*$mana*/ ctx[3]);
    			if (dirty & /*$strength*/ 16) set_data_dev(t17, /*$strength*/ ctx[4]);
    			if (dirty & /*$agility*/ 32) set_data_dev(t19, /*$agility*/ ctx[5]);
    			if (dirty & /*$intelligence*/ 64) set_data_dev(t21, /*$intelligence*/ ctx[6]);
    			if (dirty & /*$charisma*/ 128) set_data_dev(t23, /*$charisma*/ ctx[7]);
    			if (dirty & /*$luck*/ 256) set_data_dev(t26, /*$luck*/ ctx[8]);
    			if (dirty & /*$money*/ 512) set_data_dev(t29, /*$money*/ ctx[9]);

    			if (dirty & /*$skills*/ 1024) {
    				each_value = /*$skills*/ ctx[10];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$m(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$m(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(ul2, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div10);
    			destroy_each(each_blocks_2, detaching);
    			destroy_each(each_blocks_1, detaching);
    			destroy_each(each_blocks, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$u.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$u($$self, $$props, $$invalidate) {
    	let $objectives;
    	let $inventory;
    	let $health;
    	let $mana;
    	let $strength;
    	let $agility;
    	let $intelligence;
    	let $charisma;
    	let $luck;
    	let $money;
    	let $skills;
    	validate_store(objectives, 'objectives');
    	component_subscribe($$self, objectives, $$value => $$invalidate(0, $objectives = $$value));
    	validate_store(inventory, 'inventory');
    	component_subscribe($$self, inventory, $$value => $$invalidate(1, $inventory = $$value));
    	validate_store(health, 'health');
    	component_subscribe($$self, health, $$value => $$invalidate(2, $health = $$value));
    	validate_store(mana, 'mana');
    	component_subscribe($$self, mana, $$value => $$invalidate(3, $mana = $$value));
    	validate_store(strength, 'strength');
    	component_subscribe($$self, strength, $$value => $$invalidate(4, $strength = $$value));
    	validate_store(agility, 'agility');
    	component_subscribe($$self, agility, $$value => $$invalidate(5, $agility = $$value));
    	validate_store(intelligence, 'intelligence');
    	component_subscribe($$self, intelligence, $$value => $$invalidate(6, $intelligence = $$value));
    	validate_store(charisma, 'charisma');
    	component_subscribe($$self, charisma, $$value => $$invalidate(7, $charisma = $$value));
    	validate_store(luck, 'luck');
    	component_subscribe($$self, luck, $$value => $$invalidate(8, $luck = $$value));
    	validate_store(money, 'money');
    	component_subscribe($$self, money, $$value => $$invalidate(9, $money = $$value));
    	validate_store(skills, 'skills');
    	component_subscribe($$self, skills, $$value => $$invalidate(10, $skills = $$value));
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('MovingDotStatDisplay', slots, []);

    	function toggleSkill(skill) {
    		skill.learned = !skill.learned;
    		skills.update(n => n);
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<MovingDotStatDisplay> was created with unknown prop '${key}'`);
    	});

    	const click_handler = item => toggleSkill(alert(item.description, item.type));

    	$$self.$capture_state = () => ({
    		health,
    		mana,
    		strength,
    		agility,
    		intelligence,
    		charisma,
    		luck,
    		money,
    		inventory,
    		skills,
    		objectives,
    		toggleSkill,
    		$objectives,
    		$inventory,
    		$health,
    		$mana,
    		$strength,
    		$agility,
    		$intelligence,
    		$charisma,
    		$luck,
    		$money,
    		$skills
    	});

    	return [
    		$objectives,
    		$inventory,
    		$health,
    		$mana,
    		$strength,
    		$agility,
    		$intelligence,
    		$charisma,
    		$luck,
    		$money,
    		$skills,
    		toggleSkill,
    		click_handler
    	];
    }

    class MovingDotStatDisplay extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$u, create_fragment$u, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "MovingDotStatDisplay",
    			options,
    			id: create_fragment$u.name
    		});
    	}
    }

    /* src\SimpleCollapsible.svelte generated by Svelte v3.59.2 */

    const file$t = "src\\SimpleCollapsible.svelte";

    // (16:4) {#if isOpen}
    function create_if_block$h(ctx) {
    	let div;
    	let current;
    	const default_slot_template = /*#slots*/ ctx[4].default;
    	const default_slot = create_slot(default_slot_template, ctx, /*$$scope*/ ctx[3], null);

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			if (default_slot) default_slot.c();
    			attr_dev(div, "class", "content svelte-rzwxvd");
    			add_location(div, file$t, 16, 6, 335);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);

    			if (default_slot) {
    				default_slot.m(div, null);
    			}

    			current = true;
    		},
    		p: function update(ctx, dirty) {
    			if (default_slot) {
    				if (default_slot.p && (!current || dirty & /*$$scope*/ 8)) {
    					update_slot_base(
    						default_slot,
    						default_slot_template,
    						ctx,
    						/*$$scope*/ ctx[3],
    						!current
    						? get_all_dirty_from_scope(/*$$scope*/ ctx[3])
    						: get_slot_changes(default_slot_template, /*$$scope*/ ctx[3], dirty, null),
    						null
    					);
    				}
    			}
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(default_slot, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(default_slot, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			if (default_slot) default_slot.d(detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$h.name,
    		type: "if",
    		source: "(16:4) {#if isOpen}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$t(ctx) {
    	let div;
    	let button;
    	let t0_value = (/*isOpen*/ ctx[1] ? 'Close' : 'Open') + "";
    	let t0;
    	let t1;
    	let t2;
    	let t3;
    	let current;
    	let mounted;
    	let dispose;
    	let if_block = /*isOpen*/ ctx[1] && create_if_block$h(ctx);

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			button = element$1("button");
    			t0 = text(t0_value);
    			t1 = space();
    			t2 = text(/*title*/ ctx[0]);
    			t3 = space();
    			if (if_block) if_block.c();
    			attr_dev(button, "class", "svelte-rzwxvd");
    			add_location(button, file$t, 11, 4, 210);
    			attr_dev(div, "class", "collapsible svelte-rzwxvd");
    			add_location(div, file$t, 10, 0, 179);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, button);
    			append_dev(button, t0);
    			append_dev(button, t1);
    			append_dev(button, t2);
    			append_dev(div, t3);
    			if (if_block) if_block.m(div, null);
    			current = true;

    			if (!mounted) {
    				dispose = listen_dev(button, "click", /*toggleCollapsible*/ ctx[2], false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if ((!current || dirty & /*isOpen*/ 2) && t0_value !== (t0_value = (/*isOpen*/ ctx[1] ? 'Close' : 'Open') + "")) set_data_dev(t0, t0_value);
    			if (!current || dirty & /*title*/ 1) set_data_dev(t2, /*title*/ ctx[0]);

    			if (/*isOpen*/ ctx[1]) {
    				if (if_block) {
    					if_block.p(ctx, dirty);

    					if (dirty & /*isOpen*/ 2) {
    						transition_in(if_block, 1);
    					}
    				} else {
    					if_block = create_if_block$h(ctx);
    					if_block.c();
    					transition_in(if_block, 1);
    					if_block.m(div, null);
    				}
    			} else if (if_block) {
    				group_outros();

    				transition_out(if_block, 1, 1, () => {
    					if_block = null;
    				});

    				check_outros();
    			}
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(if_block);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(if_block);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			if (if_block) if_block.d();
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$t.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$t($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('SimpleCollapsible', slots, ['default']);
    	let { title = '' } = $$props;
    	let isOpen = false;

    	function toggleCollapsible() {
    		$$invalidate(1, isOpen = !isOpen);
    	}

    	const writable_props = ['title'];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<SimpleCollapsible> was created with unknown prop '${key}'`);
    	});

    	$$self.$$set = $$props => {
    		if ('title' in $$props) $$invalidate(0, title = $$props.title);
    		if ('$$scope' in $$props) $$invalidate(3, $$scope = $$props.$$scope);
    	};

    	$$self.$capture_state = () => ({ title, isOpen, toggleCollapsible });

    	$$self.$inject_state = $$props => {
    		if ('title' in $$props) $$invalidate(0, title = $$props.title);
    		if ('isOpen' in $$props) $$invalidate(1, isOpen = $$props.isOpen);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [title, isOpen, toggleCollapsible, $$scope, slots];
    }

    class SimpleCollapsible extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$t, create_fragment$t, safe_not_equal, { title: 0 });

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "SimpleCollapsible",
    			options,
    			id: create_fragment$t.name
    		});
    	}

    	get title() {
    		throw new Error("<SimpleCollapsible>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set title(value) {
    		throw new Error("<SimpleCollapsible>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}
    }

    /* src\BrainstormGameConfigsRandom.svelte generated by Svelte v3.59.2 */

    const { console: console_1$e } = globals;
    const file$s = "src\\BrainstormGameConfigsRandom.svelte";

    function get_each_context$l(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[9] = list[i];
    	return child_ctx;
    }

    function get_each_context_1$d(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[12] = list[i];
    	child_ctx[14] = i;
    	return child_ctx;
    }

    function get_each_context_2$6(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[15] = list[i];
    	return child_ctx;
    }

    function get_each_context_3$2(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[18] = list[i];
    	return child_ctx;
    }

    function get_each_context_4$1(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[21] = list[i];
    	return child_ctx;
    }

    function get_each_context_5(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[24] = list[i];
    	child_ctx[14] = i;
    	return child_ctx;
    }

    function get_each_context_6(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[15] = list[i];
    	return child_ctx;
    }

    function get_each_context_7(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[21] = list[i];
    	return child_ctx;
    }

    function get_each_context_8(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[30] = list[i];
    	return child_ctx;
    }

    function get_each_context_9(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[33] = list[i];
    	return child_ctx;
    }

    // (262:24) {#each randomContent.inventory as item}
    function create_each_block_9(ctx) {
    	let li;
    	let t0_value = /*item*/ ctx[33].name + "";
    	let t0;
    	let t1;
    	let t2_value = /*item*/ ctx[33].description + "";
    	let t2;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t0 = text(t0_value);
    			t1 = text(" - ");
    			t2 = text(t2_value);
    			attr_dev(li, "class", "svelte-utjjnp");
    			add_location(li, file$s, 262, 28, 10991);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t0);
    			append_dev(li, t1);
    			append_dev(li, t2);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*randomContent*/ 1 && t0_value !== (t0_value = /*item*/ ctx[33].name + "")) set_data_dev(t0, t0_value);
    			if (dirty[0] & /*randomContent*/ 1 && t2_value !== (t2_value = /*item*/ ctx[33].description + "")) set_data_dev(t2, t2_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_9.name,
    		type: "each",
    		source: "(262:24) {#each randomContent.inventory as item}",
    		ctx
    	});

    	return block;
    }

    // (269:24) {#each randomContent.skills as skill}
    function create_each_block_8(ctx) {
    	let li;
    	let t0_value = /*skill*/ ctx[30].branch + "";
    	let t0;
    	let t1;
    	let t2_value = /*skill*/ ctx[30].name + "";
    	let t2;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t0 = text(t0_value);
    			t1 = text(" - ");
    			t2 = text(t2_value);
    			attr_dev(li, "class", "svelte-utjjnp");
    			toggle_class(li, "learned", /*skill*/ ctx[30].learned);
    			add_location(li, file$s, 269, 28, 11282);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t0);
    			append_dev(li, t1);
    			append_dev(li, t2);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*randomContent*/ 1 && t0_value !== (t0_value = /*skill*/ ctx[30].branch + "")) set_data_dev(t0, t0_value);
    			if (dirty[0] & /*randomContent*/ 1 && t2_value !== (t2_value = /*skill*/ ctx[30].name + "")) set_data_dev(t2, t2_value);

    			if (dirty[0] & /*randomContent*/ 1) {
    				toggle_class(li, "learned", /*skill*/ ctx[30].learned);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_8.name,
    		type: "each",
    		source: "(269:24) {#each randomContent.skills as skill}",
    		ctx
    	});

    	return block;
    }

    // (276:24) {#each randomContent.objectives as objective}
    function create_each_block_7(ctx) {
    	let li;
    	let t0_value = /*objective*/ ctx[21].id + "";
    	let t0;
    	let t1;
    	let t2_value = /*objective*/ ctx[21].name + "";
    	let t2;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t0 = text(t0_value);
    			t1 = text(" - ");
    			t2 = text(t2_value);
    			attr_dev(li, "class", "svelte-utjjnp");
    			toggle_class(li, "complete", /*objective*/ ctx[21].complete);
    			add_location(li, file$s, 276, 28, 11612);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t0);
    			append_dev(li, t1);
    			append_dev(li, t2);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*randomContent*/ 1 && t0_value !== (t0_value = /*objective*/ ctx[21].id + "")) set_data_dev(t0, t0_value);
    			if (dirty[0] & /*randomContent*/ 1 && t2_value !== (t2_value = /*objective*/ ctx[21].name + "")) set_data_dev(t2, t2_value);

    			if (dirty[0] & /*randomContent*/ 1) {
    				toggle_class(li, "complete", /*objective*/ ctx[21].complete);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_7.name,
    		type: "each",
    		source: "(276:24) {#each randomContent.objectives as objective}",
    		ctx
    	});

    	return block;
    }

    // (288:28) {#each chapter.targets as target}
    function create_each_block_6(ctx) {
    	let li;
    	let t0_value = /*target*/ ctx[15].name + "";
    	let t0;
    	let t1;
    	let t2_value = /*target*/ ctx[15].x + "";
    	let t2;
    	let t3;
    	let t4_value = /*target*/ ctx[15].y + "";
    	let t4;
    	let t5;
    	let t6_value = /*target*/ ctx[15].collisionType + "";
    	let t6;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t0 = text(t0_value);
    			t1 = text(" - (");
    			t2 = text(t2_value);
    			t3 = text(", ");
    			t4 = text(t4_value);
    			t5 = text(") - ");
    			t6 = text(t6_value);
    			attr_dev(li, "class", "svelte-utjjnp");
    			add_location(li, file$s, 288, 28, 12148);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t0);
    			append_dev(li, t1);
    			append_dev(li, t2);
    			append_dev(li, t3);
    			append_dev(li, t4);
    			append_dev(li, t5);
    			append_dev(li, t6);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*randomContent*/ 1 && t0_value !== (t0_value = /*target*/ ctx[15].name + "")) set_data_dev(t0, t0_value);
    			if (dirty[0] & /*randomContent*/ 1 && t2_value !== (t2_value = /*target*/ ctx[15].x + "")) set_data_dev(t2, t2_value);
    			if (dirty[0] & /*randomContent*/ 1 && t4_value !== (t4_value = /*target*/ ctx[15].y + "")) set_data_dev(t4, t4_value);
    			if (dirty[0] & /*randomContent*/ 1 && t6_value !== (t6_value = /*target*/ ctx[15].collisionType + "")) set_data_dev(t6, t6_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_6.name,
    		type: "each",
    		source: "(288:28) {#each chapter.targets as target}",
    		ctx
    	});

    	return block;
    }

    // (284:24) {#each randomContent.story as chapter, i}
    function create_each_block_5(ctx) {
    	let h3;
    	let t0;
    	let t1_value = /*i*/ ctx[14] + 1 + "";
    	let t1;
    	let t2;
    	let p;
    	let t4;
    	let ul;
    	let t5;
    	let each_value_6 = /*chapter*/ ctx[24].targets;
    	validate_each_argument(each_value_6);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_6.length; i += 1) {
    		each_blocks[i] = create_each_block_6(get_each_context_6(ctx, each_value_6, i));
    	}

    	const block = {
    		c: function create() {
    			h3 = element$1("h3");
    			t0 = text("Chapter ");
    			t1 = text(t1_value);
    			t2 = space();
    			p = element$1("p");
    			p.textContent = "Targets:";
    			t4 = space();
    			ul = element$1("ul");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t5 = space();
    			add_location(h3, file$s, 284, 24, 11960);
    			add_location(p, file$s, 285, 24, 12010);
    			attr_dev(ul, "class", "svelte-utjjnp");
    			add_location(ul, file$s, 286, 24, 12051);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h3, anchor);
    			append_dev(h3, t0);
    			append_dev(h3, t1);
    			insert_dev(target, t2, anchor);
    			insert_dev(target, p, anchor);
    			insert_dev(target, t4, anchor);
    			insert_dev(target, ul, anchor);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(ul, null);
    				}
    			}

    			append_dev(ul, t5);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*randomContent*/ 1) {
    				each_value_6 = /*chapter*/ ctx[24].targets;
    				validate_each_argument(each_value_6);
    				let i;

    				for (i = 0; i < each_value_6.length; i += 1) {
    					const child_ctx = get_each_context_6(ctx, each_value_6, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_6(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(ul, t5);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_6.length;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h3);
    			if (detaching) detach_dev(t2);
    			if (detaching) detach_dev(p);
    			if (detaching) detach_dev(t4);
    			if (detaching) detach_dev(ul);
    			destroy_each(each_blocks, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_5.name,
    		type: "each",
    		source: "(284:24) {#each randomContent.story as chapter, i}",
    		ctx
    	});

    	return block;
    }

    // (308:36) {#each storyPart.objectives as objective}
    function create_each_block_4$1(ctx) {
    	let li;
    	let span;
    	let t0_value = /*objective*/ ctx[21].name + "";
    	let t0;
    	let t1;
    	let input;
    	let t2;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			span = element$1("span");
    			t0 = text(t0_value);
    			t1 = space();
    			input = element$1("input");
    			t2 = space();
    			add_location(span, file$s, 309, 44, 13293);
    			attr_dev(input, "type", "text");
    			attr_dev(input, "placeholder", "Enter objective details");
    			add_location(input, file$s, 310, 44, 13368);
    			attr_dev(li, "class", "svelte-utjjnp");
    			add_location(li, file$s, 308, 40, 13243);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, span);
    			append_dev(span, t0);
    			append_dev(li, t1);
    			append_dev(li, input);
    			append_dev(li, t2);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && t0_value !== (t0_value = /*objective*/ ctx[21].name + "")) set_data_dev(t0, t0_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_4$1.name,
    		type: "each",
    		source: "(308:36) {#each storyPart.objectives as objective}",
    		ctx
    	});

    	return block;
    }

    // (326:44) {#if target.subTargets && target.subTargets.length > 0}
    function create_if_block$g(ctx) {
    	let div;
    	let h5;
    	let t0;
    	let t1_value = /*target*/ ctx[15].name + "";
    	let t1;
    	let t2;
    	let ul;
    	let each_value_3 = /*target*/ ctx[15].subTargets;
    	validate_each_argument(each_value_3);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_3.length; i += 1) {
    		each_blocks[i] = create_each_block_3$2(get_each_context_3$2(ctx, each_value_3, i));
    	}

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			h5 = element$1("h5");
    			t0 = text("Subtargets of ");
    			t1 = text(t1_value);
    			t2 = space();
    			ul = element$1("ul");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(h5, file$s, 327, 52, 14525);
    			attr_dev(ul, "class", "svelte-utjjnp");
    			add_location(ul, file$s, 328, 52, 14615);
    			add_location(div, file$s, 326, 48, 14466);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, h5);
    			append_dev(h5, t0);
    			append_dev(h5, t1);
    			append_dev(div, t2);
    			append_dev(div, ul);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(ul, null);
    				}
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && t1_value !== (t1_value = /*target*/ ctx[15].name + "")) set_data_dev(t1, t1_value);

    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2) {
    				each_value_3 = /*target*/ ctx[15].subTargets;
    				validate_each_argument(each_value_3);
    				let i;

    				for (i = 0; i < each_value_3.length; i += 1) {
    					const child_ctx = get_each_context_3$2(ctx, each_value_3, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_3$2(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(ul, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_3.length;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			destroy_each(each_blocks, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$g.name,
    		type: "if",
    		source: "(326:44) {#if target.subTargets && target.subTargets.length > 0}",
    		ctx
    	});

    	return block;
    }

    // (330:56) {#each target.subTargets as subTarget}
    function create_each_block_3$2(ctx) {
    	let li;
    	let span;
    	let t0_value = /*subTarget*/ ctx[18].name + "";
    	let t0;
    	let t1;
    	let input;
    	let t2;
    	let p0;
    	let t3;
    	let t4_value = /*subTarget*/ ctx[18].x + "";
    	let t4;
    	let t5;
    	let t6_value = /*subTarget*/ ctx[18].y + "";
    	let t6;
    	let t7;
    	let t8;
    	let p1;
    	let t9;
    	let t10_value = /*subTarget*/ ctx[18].collisionType + "";
    	let t10;
    	let t11;
    	let textarea;
    	let textarea_value_value;
    	let t12;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			span = element$1("span");
    			t0 = text(t0_value);
    			t1 = space();
    			input = element$1("input");
    			t2 = space();
    			p0 = element$1("p");
    			t3 = text("Coordinates: (");
    			t4 = text(t4_value);
    			t5 = text(", ");
    			t6 = text(t6_value);
    			t7 = text(")");
    			t8 = space();
    			p1 = element$1("p");
    			t9 = text("Collision Type: ");
    			t10 = text(t10_value);
    			t11 = space();
    			textarea = element$1("textarea");
    			t12 = space();
    			add_location(span, file$s, 331, 64, 14847);
    			attr_dev(input, "type", "text");
    			attr_dev(input, "placeholder", "Enter subtarget details");
    			add_location(input, file$s, 332, 64, 14942);
    			add_location(p0, file$s, 333, 64, 15067);
    			add_location(p1, file$s, 334, 64, 15183);
    			attr_dev(textarea, "placeholder", "Enter collision text");
    			textarea.value = textarea_value_value = /*subTarget*/ ctx[18].collisiontext;
    			add_location(textarea, file$s, 335, 64, 15297);
    			attr_dev(li, "class", "svelte-utjjnp");
    			add_location(li, file$s, 330, 60, 14777);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, span);
    			append_dev(span, t0);
    			append_dev(li, t1);
    			append_dev(li, input);
    			append_dev(li, t2);
    			append_dev(li, p0);
    			append_dev(p0, t3);
    			append_dev(p0, t4);
    			append_dev(p0, t5);
    			append_dev(p0, t6);
    			append_dev(p0, t7);
    			append_dev(li, t8);
    			append_dev(li, p1);
    			append_dev(p1, t9);
    			append_dev(p1, t10);
    			append_dev(li, t11);
    			append_dev(li, textarea);
    			append_dev(li, t12);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && t0_value !== (t0_value = /*subTarget*/ ctx[18].name + "")) set_data_dev(t0, t0_value);
    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && t4_value !== (t4_value = /*subTarget*/ ctx[18].x + "")) set_data_dev(t4, t4_value);
    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && t6_value !== (t6_value = /*subTarget*/ ctx[18].y + "")) set_data_dev(t6, t6_value);
    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && t10_value !== (t10_value = /*subTarget*/ ctx[18].collisionType + "")) set_data_dev(t10, t10_value);

    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && textarea_value_value !== (textarea_value_value = /*subTarget*/ ctx[18].collisiontext)) {
    				prop_dev(textarea, "value", textarea_value_value);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_3$2.name,
    		type: "each",
    		source: "(330:56) {#each target.subTargets as subTarget}",
    		ctx
    	});

    	return block;
    }

    // (319:36) {#each storyPart.targets as target}
    function create_each_block_2$6(ctx) {
    	let li;
    	let span;
    	let t0_value = /*target*/ ctx[15].name + "";
    	let t0;
    	let t1;
    	let input;
    	let t2;
    	let p0;
    	let t3;
    	let t4_value = /*target*/ ctx[15].x + "";
    	let t4;
    	let t5;
    	let t6_value = /*target*/ ctx[15].y + "";
    	let t6;
    	let t7;
    	let t8;
    	let p1;
    	let t9;
    	let t10_value = /*target*/ ctx[15].collisionType + "";
    	let t10;
    	let t11;
    	let textarea;
    	let textarea_value_value;
    	let t12;
    	let t13;
    	let if_block = /*target*/ ctx[15].subTargets && /*target*/ ctx[15].subTargets.length > 0 && create_if_block$g(ctx);

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			span = element$1("span");
    			t0 = text(t0_value);
    			t1 = space();
    			input = element$1("input");
    			t2 = space();
    			p0 = element$1("p");
    			t3 = text("Coordinates: (");
    			t4 = text(t4_value);
    			t5 = text(", ");
    			t6 = text(t6_value);
    			t7 = text(")");
    			t8 = space();
    			p1 = element$1("p");
    			t9 = text("Collision Type: ");
    			t10 = text(t10_value);
    			t11 = space();
    			textarea = element$1("textarea");
    			t12 = space();
    			if (if_block) if_block.c();
    			t13 = space();
    			add_location(span, file$s, 320, 44, 13882);
    			attr_dev(input, "type", "text");
    			attr_dev(input, "placeholder", "Enter target details");
    			add_location(input, file$s, 321, 44, 13954);
    			add_location(p0, file$s, 322, 44, 14056);
    			add_location(p1, file$s, 323, 44, 14146);
    			attr_dev(textarea, "placeholder", "Enter collision text");
    			textarea.value = textarea_value_value = /*target*/ ctx[15].collisiontext;
    			add_location(textarea, file$s, 324, 44, 14237);
    			attr_dev(li, "class", "svelte-utjjnp");
    			add_location(li, file$s, 319, 40, 13832);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, span);
    			append_dev(span, t0);
    			append_dev(li, t1);
    			append_dev(li, input);
    			append_dev(li, t2);
    			append_dev(li, p0);
    			append_dev(p0, t3);
    			append_dev(p0, t4);
    			append_dev(p0, t5);
    			append_dev(p0, t6);
    			append_dev(p0, t7);
    			append_dev(li, t8);
    			append_dev(li, p1);
    			append_dev(p1, t9);
    			append_dev(p1, t10);
    			append_dev(li, t11);
    			append_dev(li, textarea);
    			append_dev(li, t12);
    			if (if_block) if_block.m(li, null);
    			append_dev(li, t13);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && t0_value !== (t0_value = /*target*/ ctx[15].name + "")) set_data_dev(t0, t0_value);
    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && t4_value !== (t4_value = /*target*/ ctx[15].x + "")) set_data_dev(t4, t4_value);
    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && t6_value !== (t6_value = /*target*/ ctx[15].y + "")) set_data_dev(t6, t6_value);
    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && t10_value !== (t10_value = /*target*/ ctx[15].collisionType + "")) set_data_dev(t10, t10_value);

    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && textarea_value_value !== (textarea_value_value = /*target*/ ctx[15].collisiontext)) {
    				prop_dev(textarea, "value", textarea_value_value);
    			}

    			if (/*target*/ ctx[15].subTargets && /*target*/ ctx[15].subTargets.length > 0) {
    				if (if_block) {
    					if_block.p(ctx, dirty);
    				} else {
    					if_block = create_if_block$g(ctx);
    					if_block.c();
    					if_block.m(li, t13);
    				}
    			} else if (if_block) {
    				if_block.d(1);
    				if_block = null;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    			if (if_block) if_block.d();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_2$6.name,
    		type: "each",
    		source: "(319:36) {#each storyPart.targets as target}",
    		ctx
    	});

    	return block;
    }

    // (302:20) {#each randomContentStructureSubtargets.story as storyPart, i}
    function create_each_block_1$d(ctx) {
    	let div2;
    	let h3;
    	let t0;
    	let t1_value = /*storyPart*/ ctx[12].part + 1 + "";
    	let t1;
    	let t2;
    	let div0;
    	let h40;
    	let t4;
    	let ul0;
    	let t5;
    	let div1;
    	let h41;
    	let t7;
    	let ul1;
    	let t8;
    	let each_value_4 = /*storyPart*/ ctx[12].objectives;
    	validate_each_argument(each_value_4);
    	let each_blocks_1 = [];

    	for (let i = 0; i < each_value_4.length; i += 1) {
    		each_blocks_1[i] = create_each_block_4$1(get_each_context_4$1(ctx, each_value_4, i));
    	}

    	let each_value_2 = /*storyPart*/ ctx[12].targets;
    	validate_each_argument(each_value_2);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_2.length; i += 1) {
    		each_blocks[i] = create_each_block_2$6(get_each_context_2$6(ctx, each_value_2, i));
    	}

    	const block = {
    		c: function create() {
    			div2 = element$1("div");
    			h3 = element$1("h3");
    			t0 = text("Part ");
    			t1 = text(t1_value);
    			t2 = space();
    			div0 = element$1("div");
    			h40 = element$1("h4");
    			h40.textContent = "Objectives";
    			t4 = space();
    			ul0 = element$1("ul");

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				each_blocks_1[i].c();
    			}

    			t5 = space();
    			div1 = element$1("div");
    			h41 = element$1("h4");
    			h41.textContent = "Targets";
    			t7 = space();
    			ul1 = element$1("ul");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t8 = space();
    			add_location(h3, file$s, 303, 28, 12962);
    			add_location(h40, file$s, 305, 32, 13065);
    			attr_dev(ul0, "class", "svelte-utjjnp");
    			add_location(ul0, file$s, 306, 32, 13118);
    			add_location(div0, file$s, 304, 28, 13026);
    			add_location(h41, file$s, 316, 32, 13663);
    			attr_dev(ul1, "class", "svelte-utjjnp");
    			add_location(ul1, file$s, 317, 32, 13713);
    			add_location(div1, file$s, 315, 28, 13624);
    			add_location(div2, file$s, 302, 24, 12927);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div2, anchor);
    			append_dev(div2, h3);
    			append_dev(h3, t0);
    			append_dev(h3, t1);
    			append_dev(div2, t2);
    			append_dev(div2, div0);
    			append_dev(div0, h40);
    			append_dev(div0, t4);
    			append_dev(div0, ul0);

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				if (each_blocks_1[i]) {
    					each_blocks_1[i].m(ul0, null);
    				}
    			}

    			append_dev(div2, t5);
    			append_dev(div2, div1);
    			append_dev(div1, h41);
    			append_dev(div1, t7);
    			append_dev(div1, ul1);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(ul1, null);
    				}
    			}

    			append_dev(div2, t8);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2 && t1_value !== (t1_value = /*storyPart*/ ctx[12].part + 1 + "")) set_data_dev(t1, t1_value);

    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2) {
    				each_value_4 = /*storyPart*/ ctx[12].objectives;
    				validate_each_argument(each_value_4);
    				let i;

    				for (i = 0; i < each_value_4.length; i += 1) {
    					const child_ctx = get_each_context_4$1(ctx, each_value_4, i);

    					if (each_blocks_1[i]) {
    						each_blocks_1[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_1[i] = create_each_block_4$1(child_ctx);
    						each_blocks_1[i].c();
    						each_blocks_1[i].m(ul0, null);
    					}
    				}

    				for (; i < each_blocks_1.length; i += 1) {
    					each_blocks_1[i].d(1);
    				}

    				each_blocks_1.length = each_value_4.length;
    			}

    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2) {
    				each_value_2 = /*storyPart*/ ctx[12].targets;
    				validate_each_argument(each_value_2);
    				let i;

    				for (i = 0; i < each_value_2.length; i += 1) {
    					const child_ctx = get_each_context_2$6(ctx, each_value_2, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_2$6(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(ul1, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_2.length;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div2);
    			destroy_each(each_blocks_1, detaching);
    			destroy_each(each_blocks, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$d.name,
    		type: "each",
    		source: "(302:20) {#each randomContentStructureSubtargets.story as storyPart, i}",
    		ctx
    	});

    	return block;
    }

    // (358:12) {#each timelinePoints as point}
    function create_each_block$l(ctx) {
    	let li;
    	let strong;
    	let t0_value = /*point*/ ctx[9].name + "";
    	let t0;
    	let t1;
    	let p;
    	let t2_value = /*point*/ ctx[9].details + "";
    	let t2;
    	let t3;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			strong = element$1("strong");
    			t0 = text(t0_value);
    			t1 = space();
    			p = element$1("p");
    			t2 = text(t2_value);
    			t3 = space();
    			add_location(strong, file$s, 359, 20, 16431);
    			add_location(p, file$s, 360, 20, 16482);
    			attr_dev(li, "class", "svelte-utjjnp");
    			add_location(li, file$s, 358, 16, 16405);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, strong);
    			append_dev(strong, t0);
    			append_dev(li, t1);
    			append_dev(li, p);
    			append_dev(p, t2);
    			append_dev(li, t3);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*timelinePoints*/ 4 && t0_value !== (t0_value = /*point*/ ctx[9].name + "")) set_data_dev(t0, t0_value);
    			if (dirty[0] & /*timelinePoints*/ 4 && t2_value !== (t2_value = /*point*/ ctx[9].details + "")) set_data_dev(t2, t2_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$l.name,
    		type: "each",
    		source: "(358:12) {#each timelinePoints as point}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$s(ctx) {
    	let div10;
    	let h10;
    	let t1;
    	let div8;
    	let div7;
    	let div4;
    	let div0;
    	let h11;
    	let t3;
    	let button0;
    	let t5;
    	let button1;
    	let t7;
    	let div3;
    	let div1;
    	let h20;
    	let t9;
    	let t10_value = /*randomContent*/ ctx[0].background + "";
    	let t10;
    	let t11;
    	let h21;
    	let t13;
    	let ul0;
    	let t14;
    	let h22;
    	let t16;
    	let ul1;
    	let t17;
    	let h23;
    	let t19;
    	let ul2;
    	let t20;
    	let div2;
    	let h24;
    	let t22;
    	let t23;
    	let div6;
    	let h12;
    	let t25;
    	let button2;
    	let t27;
    	let button3;
    	let t29;
    	let div5;
    	let t30;
    	let h13;
    	let t32;
    	let button4;
    	let t34;
    	let button5;
    	let t36;
    	let div9;
    	let ul3;
    	let mounted;
    	let dispose;
    	let each_value_9 = /*randomContent*/ ctx[0].inventory;
    	validate_each_argument(each_value_9);
    	let each_blocks_5 = [];

    	for (let i = 0; i < each_value_9.length; i += 1) {
    		each_blocks_5[i] = create_each_block_9(get_each_context_9(ctx, each_value_9, i));
    	}

    	let each_value_8 = /*randomContent*/ ctx[0].skills;
    	validate_each_argument(each_value_8);
    	let each_blocks_4 = [];

    	for (let i = 0; i < each_value_8.length; i += 1) {
    		each_blocks_4[i] = create_each_block_8(get_each_context_8(ctx, each_value_8, i));
    	}

    	let each_value_7 = /*randomContent*/ ctx[0].objectives;
    	validate_each_argument(each_value_7);
    	let each_blocks_3 = [];

    	for (let i = 0; i < each_value_7.length; i += 1) {
    		each_blocks_3[i] = create_each_block_7(get_each_context_7(ctx, each_value_7, i));
    	}

    	let each_value_5 = /*randomContent*/ ctx[0].story;
    	validate_each_argument(each_value_5);
    	let each_blocks_2 = [];

    	for (let i = 0; i < each_value_5.length; i += 1) {
    		each_blocks_2[i] = create_each_block_5(get_each_context_5(ctx, each_value_5, i));
    	}

    	let each_value_1 = /*randomContentStructureSubtargets*/ ctx[1].story;
    	validate_each_argument(each_value_1);
    	let each_blocks_1 = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks_1[i] = create_each_block_1$d(get_each_context_1$d(ctx, each_value_1, i));
    	}

    	let each_value = /*timelinePoints*/ ctx[2];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$l(get_each_context$l(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			div10 = element$1("div");
    			h10 = element$1("h1");
    			h10.textContent = "Prototyping Custom User Config game on the fly";
    			t1 = space();
    			div8 = element$1("div");
    			div7 = element$1("div");
    			div4 = element$1("div");
    			div0 = element$1("div");
    			h11 = element$1("h1");
    			h11.textContent = "Random Game Content Generator";
    			t3 = space();
    			button0 = element$1("button");
    			button0.textContent = "Generate New Content";
    			t5 = space();
    			button1 = element$1("button");
    			button1.textContent = "Copy Content Config to Clipboard";
    			t7 = space();
    			div3 = element$1("div");
    			div1 = element$1("div");
    			h20 = element$1("h2");
    			h20.textContent = "Background";
    			t9 = space();
    			t10 = text(t10_value);
    			t11 = space();
    			h21 = element$1("h2");
    			h21.textContent = "Inventory";
    			t13 = space();
    			ul0 = element$1("ul");

    			for (let i = 0; i < each_blocks_5.length; i += 1) {
    				each_blocks_5[i].c();
    			}

    			t14 = space();
    			h22 = element$1("h2");
    			h22.textContent = "Skills";
    			t16 = space();
    			ul1 = element$1("ul");

    			for (let i = 0; i < each_blocks_4.length; i += 1) {
    				each_blocks_4[i].c();
    			}

    			t17 = space();
    			h23 = element$1("h2");
    			h23.textContent = "Objectives";
    			t19 = space();
    			ul2 = element$1("ul");

    			for (let i = 0; i < each_blocks_3.length; i += 1) {
    				each_blocks_3[i].c();
    			}

    			t20 = space();
    			div2 = element$1("div");
    			h24 = element$1("h2");
    			h24.textContent = "Story";
    			t22 = space();

    			for (let i = 0; i < each_blocks_2.length; i += 1) {
    				each_blocks_2[i].c();
    			}

    			t23 = space();
    			div6 = element$1("div");
    			h12 = element$1("h1");
    			h12.textContent = "Random Game Structure Generator subtargets";
    			t25 = space();
    			button2 = element$1("button");
    			button2.textContent = "Generate New Content Story Structure";
    			t27 = space();
    			button3 = element$1("button");
    			button3.textContent = "Copy Random Structure to Clipboard";
    			t29 = space();
    			div5 = element$1("div");

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				each_blocks_1[i].c();
    			}

    			t30 = space();
    			h13 = element$1("h1");
    			h13.textContent = "Random Game Structure to Timeline Generator";
    			t32 = space();
    			button4 = element$1("button");
    			button4.textContent = "Generate Random Timeline from Story Structure";
    			t34 = space();
    			button5 = element$1("button");
    			button5.textContent = "Generate Linear Timeline from Story Structure";
    			t36 = space();
    			div9 = element$1("div");
    			ul3 = element$1("ul");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(h10, file$s, 244, 4, 10201);
    			add_location(h11, file$s, 250, 20, 10377);
    			add_location(button0, file$s, 251, 20, 10437);
    			add_location(button1, file$s, 252, 20, 10553);
    			add_location(div0, file$s, 249, 16, 10350);
    			add_location(h20, file$s, 256, 24, 10749);
    			add_location(h21, file$s, 259, 24, 10848);
    			attr_dev(ul0, "class", "svelte-utjjnp");
    			add_location(ul0, file$s, 260, 24, 10892);
    			add_location(h22, file$s, 266, 24, 11144);
    			attr_dev(ul1, "class", "svelte-utjjnp");
    			add_location(ul1, file$s, 267, 24, 11185);
    			add_location(h23, file$s, 273, 24, 11462);
    			attr_dev(ul2, "class", "svelte-utjjnp");
    			add_location(ul2, file$s, 274, 24, 11507);
    			add_location(div1, file$s, 255, 20, 10718);
    			add_location(h24, file$s, 282, 24, 11853);
    			add_location(div2, file$s, 281, 20, 11822);
    			attr_dev(div3, "class", "StatColumns svelte-utjjnp");
    			add_location(div3, file$s, 254, 16, 10671);
    			add_location(div4, file$s, 248, 12, 10323);
    			add_location(h12, file$s, 297, 16, 12442);
    			add_location(button2, file$s, 298, 16, 12511);
    			add_location(button3, file$s, 299, 16, 12677);
    			attr_dev(div5, "class", "StatColumns svelte-utjjnp");
    			add_location(div5, file$s, 300, 16, 12792);
    			add_location(div6, file$s, 296, 12, 12419);
    			attr_dev(div7, "class", "ContainerColumns svelte-utjjnp");
    			add_location(div7, file$s, 247, 8, 10279);
    			add_location(div8, file$s, 246, 4, 10264);
    			add_location(h13, file$s, 352, 4, 15984);
    			add_location(button4, file$s, 353, 4, 16042);
    			add_location(button5, file$s, 354, 4, 16177);
    			attr_dev(ul3, "class", "svelte-utjjnp");
    			add_location(ul3, file$s, 356, 8, 16338);
    			attr_dev(div9, "class", "timeline svelte-utjjnp");
    			add_location(div9, file$s, 355, 4, 16306);
    			add_location(div10, file$s, 243, 0, 10190);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div10, anchor);
    			append_dev(div10, h10);
    			append_dev(div10, t1);
    			append_dev(div10, div8);
    			append_dev(div8, div7);
    			append_dev(div7, div4);
    			append_dev(div4, div0);
    			append_dev(div0, h11);
    			append_dev(div0, t3);
    			append_dev(div0, button0);
    			append_dev(div0, t5);
    			append_dev(div0, button1);
    			append_dev(div4, t7);
    			append_dev(div4, div3);
    			append_dev(div3, div1);
    			append_dev(div1, h20);
    			append_dev(div1, t9);
    			append_dev(div1, t10);
    			append_dev(div1, t11);
    			append_dev(div1, h21);
    			append_dev(div1, t13);
    			append_dev(div1, ul0);

    			for (let i = 0; i < each_blocks_5.length; i += 1) {
    				if (each_blocks_5[i]) {
    					each_blocks_5[i].m(ul0, null);
    				}
    			}

    			append_dev(div1, t14);
    			append_dev(div1, h22);
    			append_dev(div1, t16);
    			append_dev(div1, ul1);

    			for (let i = 0; i < each_blocks_4.length; i += 1) {
    				if (each_blocks_4[i]) {
    					each_blocks_4[i].m(ul1, null);
    				}
    			}

    			append_dev(div1, t17);
    			append_dev(div1, h23);
    			append_dev(div1, t19);
    			append_dev(div1, ul2);

    			for (let i = 0; i < each_blocks_3.length; i += 1) {
    				if (each_blocks_3[i]) {
    					each_blocks_3[i].m(ul2, null);
    				}
    			}

    			append_dev(div3, t20);
    			append_dev(div3, div2);
    			append_dev(div2, h24);
    			append_dev(div2, t22);

    			for (let i = 0; i < each_blocks_2.length; i += 1) {
    				if (each_blocks_2[i]) {
    					each_blocks_2[i].m(div2, null);
    				}
    			}

    			append_dev(div7, t23);
    			append_dev(div7, div6);
    			append_dev(div6, h12);
    			append_dev(div6, t25);
    			append_dev(div6, button2);
    			append_dev(div6, t27);
    			append_dev(div6, button3);
    			append_dev(div6, t29);
    			append_dev(div6, div5);

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				if (each_blocks_1[i]) {
    					each_blocks_1[i].m(div5, null);
    				}
    			}

    			append_dev(div10, t30);
    			append_dev(div10, h13);
    			append_dev(div10, t32);
    			append_dev(div10, button4);
    			append_dev(div10, t34);
    			append_dev(div10, button5);
    			append_dev(div10, t36);
    			append_dev(div10, div9);
    			append_dev(div9, ul3);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(ul3, null);
    				}
    			}

    			if (!mounted) {
    				dispose = [
    					listen_dev(button0, "click", /*click_handler*/ ctx[7], false, false, false, false),
    					listen_dev(button1, "click", /*copyToClipboard*/ ctx[3], false, false, false, false),
    					listen_dev(button2, "click", /*click_handler_1*/ ctx[8], false, false, false, false),
    					listen_dev(button3, "click", /*copyToClipboardStructuresubtargets*/ ctx[4], false, false, false, false),
    					listen_dev(button4, "click", /*generateAndUpdaterandomContentStructureSubtargetsRandom*/ ctx[6], false, false, false, false),
    					listen_dev(button5, "click", /*generateAndUpdaterandomContentStructureSubtargets*/ ctx[5], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*randomContent*/ 1 && t10_value !== (t10_value = /*randomContent*/ ctx[0].background + "")) set_data_dev(t10, t10_value);

    			if (dirty[0] & /*randomContent*/ 1) {
    				each_value_9 = /*randomContent*/ ctx[0].inventory;
    				validate_each_argument(each_value_9);
    				let i;

    				for (i = 0; i < each_value_9.length; i += 1) {
    					const child_ctx = get_each_context_9(ctx, each_value_9, i);

    					if (each_blocks_5[i]) {
    						each_blocks_5[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_5[i] = create_each_block_9(child_ctx);
    						each_blocks_5[i].c();
    						each_blocks_5[i].m(ul0, null);
    					}
    				}

    				for (; i < each_blocks_5.length; i += 1) {
    					each_blocks_5[i].d(1);
    				}

    				each_blocks_5.length = each_value_9.length;
    			}

    			if (dirty[0] & /*randomContent*/ 1) {
    				each_value_8 = /*randomContent*/ ctx[0].skills;
    				validate_each_argument(each_value_8);
    				let i;

    				for (i = 0; i < each_value_8.length; i += 1) {
    					const child_ctx = get_each_context_8(ctx, each_value_8, i);

    					if (each_blocks_4[i]) {
    						each_blocks_4[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_4[i] = create_each_block_8(child_ctx);
    						each_blocks_4[i].c();
    						each_blocks_4[i].m(ul1, null);
    					}
    				}

    				for (; i < each_blocks_4.length; i += 1) {
    					each_blocks_4[i].d(1);
    				}

    				each_blocks_4.length = each_value_8.length;
    			}

    			if (dirty[0] & /*randomContent*/ 1) {
    				each_value_7 = /*randomContent*/ ctx[0].objectives;
    				validate_each_argument(each_value_7);
    				let i;

    				for (i = 0; i < each_value_7.length; i += 1) {
    					const child_ctx = get_each_context_7(ctx, each_value_7, i);

    					if (each_blocks_3[i]) {
    						each_blocks_3[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_3[i] = create_each_block_7(child_ctx);
    						each_blocks_3[i].c();
    						each_blocks_3[i].m(ul2, null);
    					}
    				}

    				for (; i < each_blocks_3.length; i += 1) {
    					each_blocks_3[i].d(1);
    				}

    				each_blocks_3.length = each_value_7.length;
    			}

    			if (dirty[0] & /*randomContent*/ 1) {
    				each_value_5 = /*randomContent*/ ctx[0].story;
    				validate_each_argument(each_value_5);
    				let i;

    				for (i = 0; i < each_value_5.length; i += 1) {
    					const child_ctx = get_each_context_5(ctx, each_value_5, i);

    					if (each_blocks_2[i]) {
    						each_blocks_2[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_2[i] = create_each_block_5(child_ctx);
    						each_blocks_2[i].c();
    						each_blocks_2[i].m(div2, null);
    					}
    				}

    				for (; i < each_blocks_2.length; i += 1) {
    					each_blocks_2[i].d(1);
    				}

    				each_blocks_2.length = each_value_5.length;
    			}

    			if (dirty[0] & /*randomContentStructureSubtargets*/ 2) {
    				each_value_1 = /*randomContentStructureSubtargets*/ ctx[1].story;
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$d(ctx, each_value_1, i);

    					if (each_blocks_1[i]) {
    						each_blocks_1[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_1[i] = create_each_block_1$d(child_ctx);
    						each_blocks_1[i].c();
    						each_blocks_1[i].m(div5, null);
    					}
    				}

    				for (; i < each_blocks_1.length; i += 1) {
    					each_blocks_1[i].d(1);
    				}

    				each_blocks_1.length = each_value_1.length;
    			}

    			if (dirty[0] & /*timelinePoints*/ 4) {
    				each_value = /*timelinePoints*/ ctx[2];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$l(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$l(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(ul3, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div10);
    			destroy_each(each_blocks_5, detaching);
    			destroy_each(each_blocks_4, detaching);
    			destroy_each(each_blocks_3, detaching);
    			destroy_each(each_blocks_2, detaching);
    			destroy_each(each_blocks_1, detaching);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$s.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function generateRandomContent() {
    	const backgrounds = [
    		'/AutoGameBackgrounds/space_background.png',
    		'/AutoGameBackgrounds/forest_background.png',
    		'/AutoGameBackgrounds/city_background.png',
    		'/AutoGameBackgrounds/desert_background.png',
    		'/AutoGameBackgrounds/underwater_background.png'
    	];

    	const weaponTypes = ['Sword', 'Bow', 'Staff', 'Dagger', 'Axe', 'Mace', 'Whip', 'Spear'];
    	const armorTypes = ['Helmet', 'Chestplate', 'Leggings', 'Boots', 'Shield', 'Gloves', 'Cloak'];
    	const consumableTypes = ['Health Potion', 'Mana Potion', 'Stamina Potion', 'Antidote', 'Bomb'];

    	const skillBranches = [
    		'Combat',
    		'Magic',
    		'Stealth',
    		'Crafting',
    		'Alchemy',
    		'Archery',
    		'Blacksmithing'
    	];

    	const objectiveNames = [
    		'Explore',
    		'Gather Resources',
    		'Defeat Enemy',
    		'Find Artifact',
    		'Rescue Prisoner',
    		'Escort NPC',
    		'Solve Puzzle',
    		'Repair Structure',
    		'Negotiate Treaty',
    		'Investigate Mystery'
    	];

    	const targetNames = [
    		'Goblin',
    		'Skeleton',
    		'Dragon',
    		'Bandit',
    		'Orc',
    		'Troll',
    		'Giant Spider',
    		'Undead Knight',
    		'Corrupted Mage',
    		'Rogue Assassin'
    	];

    	const collisionTypes = ['alert', 'battle', 'dialogue', 'trade', 'cutscene'];
    	const randomBackground = backgrounds[Math.floor(Math.random() * backgrounds.length)];

    	const randomInventory = [
    		...Array.from({ length: 3 }, () => ({
    			type: 'weapon',
    			name: `${weaponTypes[Math.floor(Math.random() * weaponTypes.length)]}`,
    			description: 'A powerful weapon.'
    		})),
    		...Array.from({ length: 2 }, () => ({
    			type: 'armor',
    			name: `${armorTypes[Math.floor(Math.random() * armorTypes.length)]}`,
    			description: 'Protective gear.'
    		})),
    		...Array.from({ length: 2 }, () => ({
    			type: 'consumable',
    			name: `${consumableTypes[Math.floor(Math.random() * consumableTypes.length)]}`,
    			description: 'A helpful item.'
    		}))
    	];

    	const randomSkills = Array.from({ length: 15 }, (_, index) => ({
    		branch: skillBranches[Math.floor(Math.random() * skillBranches.length)],
    		name: `Skill ${index + 1}`,
    		learned: Math.random() < 0.5
    	}));

    	const randomObjectives = Array.from({ length: 5 }, (_, index) => ({
    		id: `Mission ${index + 1}`,
    		name: `${objectiveNames[Math.floor(Math.random() * objectiveNames.length)]} Mission`,
    		complete: Math.random() < 0.5
    	}));

    	const randomStory = Array.from({ length: 5 }, (_, index) => ({
    		part: index,
    		objectives: Array.from({ length: 2 }, () => ({
    			id: `Task ${Math.floor(Math.random() * 5) + 1}`,
    			name: `${objectiveNames[Math.floor(Math.random() * objectiveNames.length)]} Task`,
    			complete: Math.random() < 0.5
    		})),
    		targets: Array.from({ length: 3 }, () => ({
    			name: `${targetNames[Math.floor(Math.random() * targetNames.length)]}`,
    			x: Math.floor(Math.random() * 100),
    			y: Math.floor(Math.random() * 100),
    			collisionType: collisionTypes[Math.floor(Math.random() * collisionTypes.length)],
    			collisiontext: 'Test Collision'
    		}))
    	}));

    	const randomContent = {
    		background: randomBackground,
    		inventory: randomInventory,
    		skills: randomSkills,
    		persistentTargets: [],
    		objectives: randomObjectives,
    		story: randomStory,
    		actions: {
    			Buybook() {
    				
    			}, // Logic to buy a book
    			// Logic to buy a book
    			
    		}
    	};

    	return randomContent;
    }

    // function generateRandomContentStructure() {
    // // ... (existing code for generating random content)
    //     const randomStoryPartslengths = Math.floor(Math.random() * 5) + 1; // Generate random number of story parts (1-5)
    //     const randomStorystructure = Array.from({ length: randomStoryPartslengths }, (_, index) => ({
    //     part: index,
    //     objectives: Array.from({ length: Math.floor(Math.random() * 3) + 1 }, (_, idx) => ({
    //         id: `Objective${index + 1}_${idx + 1}`,
    //         name: `Objective ${index + 1}.${idx + 1}`,
    //         complete: false,
    //     })),
    //     targets: Array.from({ length: Math.floor(Math.random() * 4) + 1 }, (_, idx) => ({
    //         name: `Target${index + 1}_${idx + 1}`,
    //         x: Math.floor(Math.random() * 100),
    //         y: Math.floor(Math.random() * 100),
    //         collisionType: 'alert',
    //         collisiontext: `Placeholder text for Target ${index + 1}.${idx + 1}`,
    //     })),
    //     }));
    //     const randomContentstructure = {
    //     // ... (existing properties)
    //         story: randomStorystructure,
    //     };
    //     return randomContentstructure;
    // }
    function generateRandomContentStructureSubtargets$1() {
    	// Random number generator for various properties
    	function getRandomNumber(max, min = 1) {
    		return Math.floor(Math.random() * (max - min + 1)) + min;
    	}

    	// Recursive function to generate targets and optionally subtargets
    	function generateTargets(level = 0) {
    		const numberOfTargets = getRandomNumber(4); // Generate up to 4 targets

    		const targets = Array.from({ length: numberOfTargets }, (_, idx) => {
    			const target = {
    				name: `Target${level}_${idx + 1}`,
    				x: getRandomNumber(100),
    				y: getRandomNumber(100),
    				collisionType: 'alert',
    				collisiontext: `Placeholder text for Target ${level}.${idx + 1}`
    			};

    			// Randomly decide if this target should have subtargets, less likely as level increases
    			if (Math.random() < 0.5 - level * 0.1) {
    				target.subTargets = generateTargets(level + 1);
    			}

    			return target;
    		});

    		return targets;
    	}

    	// Generate the random story structure with nested targets
    	const randomStoryPartsLength = getRandomNumber(5); // Generate random number of story parts (1-5)

    	const randomStoryStructure = Array.from({ length: randomStoryPartsLength }, (_, index) => ({
    		part: index,
    		objectives: Array.from({ length: getRandomNumber(3) }, (_, idx) => ({
    			id: `Objective${index + 1}_${idx + 1}`,
    			name: `Objective ${index + 1}.${idx + 1}`,
    			complete: false
    		})),
    		targets: generateTargets()
    	}));

    	// Compile the full random content structure
    	const randomContentStructure = { story: randomStoryStructure };

    	return randomContentStructure;
    }

    function copyToClipboardStructure() {
    	navigator.clipboard.writeText(JSON.stringify(randomContentstructure, null, 2)).then(() => {
    		alert('Random content Structure copied to clipboard!');
    	}).catch(error => {
    		console.error('Failed to copy to clipboard:', error);
    		alert('Error, Random content Structure failed to copy due to error!');
    	});
    }

    // Flatten and prepare targets for the timeline
    function prepareTimelineData(story) {
    	const allPoints = [];

    	function recurseTargets(targets, prefix = '') {
    		targets.forEach((target, index) => {
    			const path = `${prefix}Target ${index + 1}: ${target.name}`;

    			allPoints.push({
    				name: path,
    				details: target.collisiontext
    			});

    			if (target.subTargets && target.subTargets.length > 0) {
    				recurseTargets(target.subTargets, path + ' -> ');
    			}
    		});
    	}

    	story.forEach((part, index) => {
    		if (part.targets) {
    			recurseTargets(part.targets, `Part ${index + 1} -> `);
    		}
    	});

    	return allPoints;
    }

    function instance$s($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('BrainstormGameConfigsRandom', slots, []);
    	let randomContent = generateRandomContent();

    	// let randomContentstructure = generateRandomContentStructure();
    	let randomContentStructureSubtargets = generateRandomContentStructureSubtargets$1();

    	console.log(randomContentStructureSubtargets);

    	function copyToClipboard() {
    		navigator.clipboard.writeText(JSON.stringify(randomContent, null, 2)).then(() => {
    			alert('Random content copied to clipboard!');
    		}).catch(error => {
    			console.error('Failed to copy to clipboard:', error);
    			alert('Error, Random content failed to copy due to error!');
    		});
    	}

    	function copyToClipboardStructuresubtargets() {
    		navigator.clipboard.writeText(JSON.stringify(randomContentStructureSubtargets, null, 2)).then(() => {
    			alert('Random content Structure copied to clipboard!');
    		}).catch(error => {
    			console.error('Failed to copy to clipboard:', error);
    			alert('Error, Random content Structure failed to copy due to error!');
    		});
    	}

    	let timelinePoints = [];

    	// Function to generate a new random structure and update the timeline
    	function generateAndUpdaterandomContentStructureSubtargets() {
    		$$invalidate(2, timelinePoints = prepareTimelineData(randomContentStructureSubtargets.story));
    	}

    	function generateAndUpdaterandomContentStructureSubtargetsRandom() {
    		const randomallPoints = prepareTimelineData(randomContentStructureSubtargets.story);
    		randomallPoints.sort(() => Math.random() - 0.5);
    		$$invalidate(2, timelinePoints = randomallPoints);
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$e.warn(`<BrainstormGameConfigsRandom> was created with unknown prop '${key}'`);
    	});

    	const click_handler = () => $$invalidate(0, randomContent = generateRandomContent());
    	const click_handler_1 = () => $$invalidate(1, randomContentStructureSubtargets = generateRandomContentStructureSubtargets$1());

    	$$self.$capture_state = () => ({
    		generateRandomContent,
    		generateRandomContentStructureSubtargets: generateRandomContentStructureSubtargets$1,
    		randomContent,
    		randomContentStructureSubtargets,
    		copyToClipboard,
    		copyToClipboardStructure,
    		copyToClipboardStructuresubtargets,
    		prepareTimelineData,
    		timelinePoints,
    		generateAndUpdaterandomContentStructureSubtargets,
    		generateAndUpdaterandomContentStructureSubtargetsRandom
    	});

    	$$self.$inject_state = $$props => {
    		if ('randomContent' in $$props) $$invalidate(0, randomContent = $$props.randomContent);
    		if ('randomContentStructureSubtargets' in $$props) $$invalidate(1, randomContentStructureSubtargets = $$props.randomContentStructureSubtargets);
    		if ('timelinePoints' in $$props) $$invalidate(2, timelinePoints = $$props.timelinePoints);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		randomContent,
    		randomContentStructureSubtargets,
    		timelinePoints,
    		copyToClipboard,
    		copyToClipboardStructuresubtargets,
    		generateAndUpdaterandomContentStructureSubtargets,
    		generateAndUpdaterandomContentStructureSubtargetsRandom,
    		click_handler,
    		click_handler_1
    	];
    }

    class BrainstormGameConfigsRandom extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$s, create_fragment$s, safe_not_equal, {}, null, [-1, -1]);

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "BrainstormGameConfigsRandom",
    			options,
    			id: create_fragment$s.name
    		});
    	}
    }

    /* src\BrainstormStateTransitionsRandom.svelte generated by Svelte v3.59.2 */

    const { console: console_1$d } = globals;
    const file$r = "src\\BrainstormStateTransitionsRandom.svelte";

    function get_each_context$k(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[47] = list[i];
    	return child_ctx;
    }

    function get_each_context_1$c(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[50] = list[i];
    	return child_ctx;
    }

    function get_each_context_2$5(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[47] = list[i];
    	return child_ctx;
    }

    // (293:4) {#if $timelines.length > 0}
    function create_if_block_4(ctx) {
    	let h20;
    	let t1;
    	let t2;
    	let h21;
    	let t4;
    	let button;
    	let t6;
    	let ul;
    	let mounted;
    	let dispose;
    	let each_value_1 = /*$timelines*/ ctx[5];
    	validate_each_argument(each_value_1);
    	let each_blocks_1 = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks_1[i] = create_each_block_1$c(get_each_context_1$c(ctx, each_value_1, i));
    	}

    	let each_value = /*$mergedTimeline*/ ctx[8];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$k(get_each_context$k(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			h20 = element$1("h2");
    			h20.textContent = "Timelines";
    			t1 = space();

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				each_blocks_1[i].c();
    			}

    			t2 = space();
    			h21 = element$1("h2");
    			h21.textContent = "Merged Timeline";
    			t4 = space();
    			button = element$1("button");
    			button.textContent = "Merge Timelines";
    			t6 = space();
    			ul = element$1("ul");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(h20, file$r, 293, 6, 11327);
    			add_location(h21, file$r, 306, 6, 11735);
    			add_location(button, file$r, 307, 6, 11767);
    			add_location(ul, file$r, 308, 6, 11833);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h20, anchor);
    			insert_dev(target, t1, anchor);

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				if (each_blocks_1[i]) {
    					each_blocks_1[i].m(target, anchor);
    				}
    			}

    			insert_dev(target, t2, anchor);
    			insert_dev(target, h21, anchor);
    			insert_dev(target, t4, anchor);
    			insert_dev(target, button, anchor);
    			insert_dev(target, t6, anchor);
    			insert_dev(target, ul, anchor);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(ul, null);
    				}
    			}

    			if (!mounted) {
    				dispose = listen_dev(button, "click", /*mergeTimelines*/ ctx[15], false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*generateRandomPoints, $timelines*/ 16416) {
    				each_value_1 = /*$timelines*/ ctx[5];
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$c(ctx, each_value_1, i);

    					if (each_blocks_1[i]) {
    						each_blocks_1[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_1[i] = create_each_block_1$c(child_ctx);
    						each_blocks_1[i].c();
    						each_blocks_1[i].m(t2.parentNode, t2);
    					}
    				}

    				for (; i < each_blocks_1.length; i += 1) {
    					each_blocks_1[i].d(1);
    				}

    				each_blocks_1.length = each_value_1.length;
    			}

    			if (dirty[0] & /*$mergedTimeline*/ 256) {
    				each_value = /*$mergedTimeline*/ ctx[8];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$k(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$k(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(ul, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h20);
    			if (detaching) detach_dev(t1);
    			destroy_each(each_blocks_1, detaching);
    			if (detaching) detach_dev(t2);
    			if (detaching) detach_dev(h21);
    			if (detaching) detach_dev(t4);
    			if (detaching) detach_dev(button);
    			if (detaching) detach_dev(t6);
    			if (detaching) detach_dev(ul);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_4.name,
    		type: "if",
    		source: "(293:4) {#if $timelines.length > 0}",
    		ctx
    	});

    	return block;
    }

    // (298:10) {#each timeline.points as point}
    function create_each_block_2$5(ctx) {
    	let li;
    	let t0_value = /*point*/ ctx[47].year + "";
    	let t0;
    	let t1;
    	let t2_value = /*point*/ ctx[47].description + "";
    	let t2;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t0 = text(t0_value);
    			t1 = text(": ");
    			t2 = text(t2_value);
    			add_location(li, file$r, 298, 12, 11496);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t0);
    			append_dev(li, t1);
    			append_dev(li, t2);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$timelines*/ 32 && t0_value !== (t0_value = /*point*/ ctx[47].year + "")) set_data_dev(t0, t0_value);
    			if (dirty[0] & /*$timelines*/ 32 && t2_value !== (t2_value = /*point*/ ctx[47].description + "")) set_data_dev(t2, t2_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_2$5.name,
    		type: "each",
    		source: "(298:10) {#each timeline.points as point}",
    		ctx
    	});

    	return block;
    }

    // (295:6) {#each $timelines as timeline}
    function create_each_block_1$c(ctx) {
    	let h3;
    	let t0;
    	let t1_value = /*timeline*/ ctx[50].id + "";
    	let t1;
    	let t2;
    	let ul;
    	let t3;
    	let button;
    	let t4;
    	let t5_value = /*timeline*/ ctx[50].id + "";
    	let t5;
    	let mounted;
    	let dispose;
    	let each_value_2 = /*timeline*/ ctx[50].points;
    	validate_each_argument(each_value_2);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_2.length; i += 1) {
    		each_blocks[i] = create_each_block_2$5(get_each_context_2$5(ctx, each_value_2, i));
    	}

    	function click_handler() {
    		return /*click_handler*/ ctx[24](/*timeline*/ ctx[50]);
    	}

    	const block = {
    		c: function create() {
    			h3 = element$1("h3");
    			t0 = text("Timeline ");
    			t1 = text(t1_value);
    			t2 = space();
    			ul = element$1("ul");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t3 = space();
    			button = element$1("button");
    			t4 = text("Add Points to Timeline ");
    			t5 = text(t5_value);
    			add_location(h3, file$r, 295, 8, 11393);
    			add_location(ul, file$r, 296, 8, 11434);
    			add_location(button, file$r, 301, 8, 11582);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h3, anchor);
    			append_dev(h3, t0);
    			append_dev(h3, t1);
    			insert_dev(target, t2, anchor);
    			insert_dev(target, ul, anchor);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(ul, null);
    				}
    			}

    			insert_dev(target, t3, anchor);
    			insert_dev(target, button, anchor);
    			append_dev(button, t4);
    			append_dev(button, t5);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", click_handler, false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;
    			if (dirty[0] & /*$timelines*/ 32 && t1_value !== (t1_value = /*timeline*/ ctx[50].id + "")) set_data_dev(t1, t1_value);

    			if (dirty[0] & /*$timelines*/ 32) {
    				each_value_2 = /*timeline*/ ctx[50].points;
    				validate_each_argument(each_value_2);
    				let i;

    				for (i = 0; i < each_value_2.length; i += 1) {
    					const child_ctx = get_each_context_2$5(ctx, each_value_2, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_2$5(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(ul, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_2.length;
    			}

    			if (dirty[0] & /*$timelines*/ 32 && t5_value !== (t5_value = /*timeline*/ ctx[50].id + "")) set_data_dev(t5, t5_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h3);
    			if (detaching) detach_dev(t2);
    			if (detaching) detach_dev(ul);
    			destroy_each(each_blocks, detaching);
    			if (detaching) detach_dev(t3);
    			if (detaching) detach_dev(button);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$c.name,
    		type: "each",
    		source: "(295:6) {#each $timelines as timeline}",
    		ctx
    	});

    	return block;
    }

    // (310:8) {#each $mergedTimeline as point}
    function create_each_block$k(ctx) {
    	let li;
    	let t0_value = /*point*/ ctx[47].year + "";
    	let t0;
    	let t1;
    	let t2_value = /*point*/ ctx[47].description + "";
    	let t2;
    	let t3;
    	let t4_value = /*point*/ ctx[47].timelineId + "";
    	let t4;
    	let t5;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t0 = text(t0_value);
    			t1 = text(": ");
    			t2 = text(t2_value);
    			t3 = text(" (Timeline ");
    			t4 = text(t4_value);
    			t5 = text(")\r\n          ");
    			add_location(li, file$r, 310, 10, 11891);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t0);
    			append_dev(li, t1);
    			append_dev(li, t2);
    			append_dev(li, t3);
    			append_dev(li, t4);
    			append_dev(li, t5);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$mergedTimeline*/ 256 && t0_value !== (t0_value = /*point*/ ctx[47].year + "")) set_data_dev(t0, t0_value);
    			if (dirty[0] & /*$mergedTimeline*/ 256 && t2_value !== (t2_value = /*point*/ ctx[47].description + "")) set_data_dev(t2, t2_value);
    			if (dirty[0] & /*$mergedTimeline*/ 256 && t4_value !== (t4_value = /*point*/ ctx[47].timelineId + "")) set_data_dev(t4, t4_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$k.name,
    		type: "each",
    		source: "(310:8) {#each $mergedTimeline as point}",
    		ctx
    	});

    	return block;
    }

    // (339:6) {#if sequence.length > 0}
    function create_if_block_3$2(ctx) {
    	let div;
    	let p;
    	let t0;
    	let t1_value = /*sequence*/ ctx[0].join(', ') + "";
    	let t1;

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			p = element$1("p");
    			t0 = text("Generated Sequence: ");
    			t1 = text(t1_value);
    			add_location(p, file$r, 340, 10, 12886);
    			add_location(div, file$r, 339, 8, 12869);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, p);
    			append_dev(p, t0);
    			append_dev(p, t1);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*sequence*/ 1 && t1_value !== (t1_value = /*sequence*/ ctx[0].join(', ') + "")) set_data_dev(t1, t1_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_3$2.name,
    		type: "if",
    		source: "(339:6) {#if sequence.length > 0}",
    		ctx
    	});

    	return block;
    }

    // (329:4) {#if isTwoColumnLayout}
    function create_if_block_2$4(ctx) {
    	let div2;
    	let div0;
    	let p0;
    	let t0;
    	let t1_value = /*playerSequence*/ ctx[1].join(', ') + "";
    	let t1;
    	let t2;
    	let div1;
    	let p1;
    	let t3;
    	let t4_value = /*enemySequence*/ ctx[2].join(', ') + "";
    	let t4;

    	const block = {
    		c: function create() {
    			div2 = element$1("div");
    			div0 = element$1("div");
    			p0 = element$1("p");
    			t0 = text("Player Sequence: ");
    			t1 = text(t1_value);
    			t2 = space();
    			div1 = element$1("div");
    			p1 = element$1("p");
    			t3 = text("Enemy Sequence: ");
    			t4 = text(t4_value);
    			add_location(p0, file$r, 331, 10, 12623);
    			set_style(div0, "flex", "1");
    			add_location(div0, file$r, 330, 8, 12589);
    			add_location(p1, file$r, 334, 10, 12734);
    			set_style(div1, "flex", "1");
    			add_location(div1, file$r, 333, 8, 12700);
    			set_style(div2, "display", "flex");
    			add_location(div2, file$r, 329, 6, 12551);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div2, anchor);
    			append_dev(div2, div0);
    			append_dev(div0, p0);
    			append_dev(p0, t0);
    			append_dev(p0, t1);
    			append_dev(div2, t2);
    			append_dev(div2, div1);
    			append_dev(div1, p1);
    			append_dev(p1, t3);
    			append_dev(p1, t4);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*playerSequence*/ 2 && t1_value !== (t1_value = /*playerSequence*/ ctx[1].join(', ') + "")) set_data_dev(t1, t1_value);
    			if (dirty[0] & /*enemySequence*/ 4 && t4_value !== (t4_value = /*enemySequence*/ ctx[2].join(', ') + "")) set_data_dev(t4, t4_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div2);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_2$4.name,
    		type: "if",
    		source: "(329:4) {#if isTwoColumnLayout}",
    		ctx
    	});

    	return block;
    }

    // (346:4) {#if sequence.length > 0}
    function create_if_block_1$7(ctx) {
    	let div;
    	let button0;
    	let t1;
    	let button1;
    	let t3;
    	let button2;
    	let t5;
    	let button3;
    	let mounted;
    	let dispose;

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			button0 = element$1("button");
    			button0.textContent = "Copy 5 Items";
    			t1 = space();
    			button1 = element$1("button");
    			button1.textContent = "Copy 10 Items";
    			t3 = space();
    			button2 = element$1("button");
    			button2.textContent = "Copy 30 Items";
    			t5 = space();
    			button3 = element$1("button");
    			button3.textContent = "Copy All Events";
    			add_location(button0, file$r, 347, 8, 13032);
    			add_location(button1, file$r, 348, 8, 13107);
    			add_location(button2, file$r, 349, 8, 13184);
    			add_location(button3, file$r, 350, 8, 13261);
    			add_location(div, file$r, 346, 6, 13017);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, button0);
    			append_dev(div, t1);
    			append_dev(div, button1);
    			append_dev(div, t3);
    			append_dev(div, button2);
    			append_dev(div, t5);
    			append_dev(div, button3);

    			if (!mounted) {
    				dispose = [
    					listen_dev(button0, "click", /*click_handler_1*/ ctx[25], false, false, false, false),
    					listen_dev(button1, "click", /*click_handler_2*/ ctx[26], false, false, false, false),
    					listen_dev(button2, "click", /*click_handler_3*/ ctx[27], false, false, false, false),
    					listen_dev(button3, "click", /*click_handler_4*/ ctx[28], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_1$7.name,
    		type: "if",
    		source: "(346:4) {#if sequence.length > 0}",
    		ctx
    	});

    	return block;
    }

    // (355:4) {#if jsonScaffold}
    function create_if_block$f(ctx) {
    	let div;
    	let button;
    	let t1;
    	let pre;
    	let t2;
    	let t3_value = JSON.stringify(/*jsonScaffold*/ ctx[4], null, 2) + "";
    	let t3;
    	let t4;
    	let mounted;
    	let dispose;

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			button = element$1("button");
    			button.textContent = "Copy editable fields for llm";
    			t1 = space();
    			pre = element$1("pre");
    			t2 = text("          ");
    			t3 = text(t3_value);
    			t4 = text("\r\n        ");
    			add_location(button, file$r, 356, 8, 13438);
    			add_location(pre, file$r, 358, 8, 13549);
    			attr_dev(div, "class", "scrollable svelte-1d8ch82");
    			add_location(div, file$r, 355, 6, 13404);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, button);
    			append_dev(div, t1);
    			append_dev(div, pre);
    			append_dev(pre, t2);
    			append_dev(pre, t3);
    			append_dev(pre, t4);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", /*click_handler_5*/ ctx[29], false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*jsonScaffold*/ 16 && t3_value !== (t3_value = JSON.stringify(/*jsonScaffold*/ ctx[4], null, 2) + "")) set_data_dev(t3, t3_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$f.name,
    		type: "if",
    		source: "(355:4) {#if jsonScaffold}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$r(ctx) {
    	let div0;
    	let h2;
    	let t1;
    	let label0;
    	let t3;
    	let input0;
    	let t4;
    	let button0;
    	let t6;
    	let label1;
    	let t8;
    	let input1;
    	let t9;
    	let t10;
    	let hr0;
    	let hr1;
    	let t11;
    	let h1;
    	let t13;
    	let div1;
    	let button1;
    	let t15;
    	let button2;
    	let t16;
    	let button2_disabled_value;
    	let t17;
    	let button3;
    	let t19;
    	let button4;
    	let t21;
    	let t22;
    	let t23;
    	let mounted;
    	let dispose;
    	let if_block0 = /*$timelines*/ ctx[5].length > 0 && create_if_block_4(ctx);

    	function select_block_type(ctx, dirty) {
    		if (/*isTwoColumnLayout*/ ctx[3]) return create_if_block_2$4;
    		if (/*sequence*/ ctx[0].length > 0) return create_if_block_3$2;
    	}

    	let current_block_type = select_block_type(ctx);
    	let if_block1 = current_block_type && current_block_type(ctx);
    	let if_block2 = /*sequence*/ ctx[0].length > 0 && create_if_block_1$7(ctx);
    	let if_block3 = /*jsonScaffold*/ ctx[4] && create_if_block$f(ctx);

    	const block = {
    		c: function create() {
    			div0 = element$1("div");
    			h2 = element$1("h2");
    			h2.textContent = "Timeline Generator (esp backstories)";
    			t1 = space();
    			label0 = element$1("label");
    			label0.textContent = "Number of Timelines:";
    			t3 = space();
    			input0 = element$1("input");
    			t4 = space();
    			button0 = element$1("button");
    			button0.textContent = "Create Timelines";
    			t6 = space();
    			label1 = element$1("label");
    			label1.textContent = "Number of Events per Timeline:";
    			t8 = space();
    			input1 = element$1("input");
    			t9 = space();
    			if (if_block0) if_block0.c();
    			t10 = space();
    			hr0 = element$1("hr");
    			hr1 = element$1("hr");
    			t11 = space();
    			h1 = element$1("h1");
    			h1.textContent = "Sequence and psuedo json scaffold generator";
    			t13 = space();
    			div1 = element$1("div");
    			button1 = element$1("button");
    			button1.textContent = "Generate New Sequence";
    			t15 = space();
    			button2 = element$1("button");
    			t16 = text("Generate Follow-Up Sequence");
    			t17 = space();
    			button3 = element$1("button");
    			button3.textContent = "Generate Main Enemy (solo protagonist) based Sequence";
    			t19 = space();
    			button4 = element$1("button");
    			button4.textContent = "Generate JSON Scaffold";
    			t21 = space();
    			if (if_block1) if_block1.c();
    			t22 = space();
    			if (if_block2) if_block2.c();
    			t23 = space();
    			if (if_block3) if_block3.c();
    			add_location(h2, file$r, 283, 4, 10882);
    			attr_dev(label0, "for", "numTimelines");
    			add_location(label0, file$r, 285, 4, 10937);
    			attr_dev(input0, "type", "number");
    			attr_dev(input0, "id", "numTimelines");
    			attr_dev(input0, "min", "1");
    			add_location(input0, file$r, 286, 4, 10997);
    			add_location(button0, file$r, 287, 4, 11077);
    			attr_dev(label1, "for", "numEvents");
    			add_location(label1, file$r, 289, 4, 11147);
    			attr_dev(input1, "type", "number");
    			attr_dev(input1, "id", "numEvents");
    			attr_dev(input1, "min", "1");
    			add_location(input1, file$r, 290, 4, 11214);
    			add_location(div0, file$r, 282, 2, 10871);
    			add_location(hr0, file$r, 318, 2, 12048);
    			add_location(hr1, file$r, 318, 6, 12052);
    			add_location(h1, file$r, 320, 2, 12064);
    			add_location(button1, file$r, 323, 4, 12135);
    			button2.disabled = button2_disabled_value = /*sequence*/ ctx[0].length === 0;
    			add_location(button2, file$r, 324, 4, 12207);
    			add_location(button3, file$r, 325, 4, 12326);
    			add_location(button4, file$r, 326, 4, 12439);
    			add_location(div1, file$r, 322, 2, 12124);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div0, anchor);
    			append_dev(div0, h2);
    			append_dev(div0, t1);
    			append_dev(div0, label0);
    			append_dev(div0, t3);
    			append_dev(div0, input0);
    			set_input_value(input0, /*$numTimelines*/ ctx[7]);
    			append_dev(div0, t4);
    			append_dev(div0, button0);
    			append_dev(div0, t6);
    			append_dev(div0, label1);
    			append_dev(div0, t8);
    			append_dev(div0, input1);
    			set_input_value(input1, /*$numEvents*/ ctx[6]);
    			append_dev(div0, t9);
    			if (if_block0) if_block0.m(div0, null);
    			insert_dev(target, t10, anchor);
    			insert_dev(target, hr0, anchor);
    			insert_dev(target, hr1, anchor);
    			insert_dev(target, t11, anchor);
    			insert_dev(target, h1, anchor);
    			insert_dev(target, t13, anchor);
    			insert_dev(target, div1, anchor);
    			append_dev(div1, button1);
    			append_dev(div1, t15);
    			append_dev(div1, button2);
    			append_dev(button2, t16);
    			append_dev(div1, t17);
    			append_dev(div1, button3);
    			append_dev(div1, t19);
    			append_dev(div1, button4);
    			append_dev(div1, t21);
    			if (if_block1) if_block1.m(div1, null);
    			append_dev(div1, t22);
    			if (if_block2) if_block2.m(div1, null);
    			append_dev(div1, t23);
    			if (if_block3) if_block3.m(div1, null);

    			if (!mounted) {
    				dispose = [
    					listen_dev(input0, "input", /*input0_input_handler*/ ctx[22]),
    					listen_dev(button0, "click", /*createTimelines*/ ctx[13], false, false, false, false),
    					listen_dev(input1, "input", /*input1_input_handler*/ ctx[23]),
    					listen_dev(button1, "click", /*generateSequence*/ ctx[16], false, false, false, false),
    					listen_dev(button2, "click", /*generateFollowUpSequence*/ ctx[17], false, false, false, false),
    					listen_dev(button3, "click", /*generateMainEnemySequence*/ ctx[18], false, false, false, false),
    					listen_dev(button4, "click", /*generateJSONScaffold*/ ctx[20], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$numTimelines*/ 128 && to_number(input0.value) !== /*$numTimelines*/ ctx[7]) {
    				set_input_value(input0, /*$numTimelines*/ ctx[7]);
    			}

    			if (dirty[0] & /*$numEvents*/ 64 && to_number(input1.value) !== /*$numEvents*/ ctx[6]) {
    				set_input_value(input1, /*$numEvents*/ ctx[6]);
    			}

    			if (/*$timelines*/ ctx[5].length > 0) {
    				if (if_block0) {
    					if_block0.p(ctx, dirty);
    				} else {
    					if_block0 = create_if_block_4(ctx);
    					if_block0.c();
    					if_block0.m(div0, null);
    				}
    			} else if (if_block0) {
    				if_block0.d(1);
    				if_block0 = null;
    			}

    			if (dirty[0] & /*sequence*/ 1 && button2_disabled_value !== (button2_disabled_value = /*sequence*/ ctx[0].length === 0)) {
    				prop_dev(button2, "disabled", button2_disabled_value);
    			}

    			if (current_block_type === (current_block_type = select_block_type(ctx)) && if_block1) {
    				if_block1.p(ctx, dirty);
    			} else {
    				if (if_block1) if_block1.d(1);
    				if_block1 = current_block_type && current_block_type(ctx);

    				if (if_block1) {
    					if_block1.c();
    					if_block1.m(div1, t22);
    				}
    			}

    			if (/*sequence*/ ctx[0].length > 0) {
    				if (if_block2) {
    					if_block2.p(ctx, dirty);
    				} else {
    					if_block2 = create_if_block_1$7(ctx);
    					if_block2.c();
    					if_block2.m(div1, t23);
    				}
    			} else if (if_block2) {
    				if_block2.d(1);
    				if_block2 = null;
    			}

    			if (/*jsonScaffold*/ ctx[4]) {
    				if (if_block3) {
    					if_block3.p(ctx, dirty);
    				} else {
    					if_block3 = create_if_block$f(ctx);
    					if_block3.c();
    					if_block3.m(div1, null);
    				}
    			} else if (if_block3) {
    				if_block3.d(1);
    				if_block3 = null;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div0);
    			if (if_block0) if_block0.d();
    			if (detaching) detach_dev(t10);
    			if (detaching) detach_dev(hr0);
    			if (detaching) detach_dev(hr1);
    			if (detaching) detach_dev(t11);
    			if (detaching) detach_dev(h1);
    			if (detaching) detach_dev(t13);
    			if (detaching) detach_dev(div1);

    			if (if_block1) {
    				if_block1.d();
    			}

    			if (if_block2) if_block2.d();
    			if (if_block3) if_block3.d();
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$r.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function getKeysFromJSON$2(json, filter) {
    	const filteredKeys = [];
    	const remainingKeys = [];

    	function traverseObject(obj, parentKey = '') {
    		for (const key in obj) {
    			if (obj.hasOwnProperty(key)) {
    				const fullKey = parentKey ? `${parentKey}.${key}` : key;

    				if (typeof filter === 'function' && filter(fullKey)) {
    					filteredKeys.push(fullKey);
    				} else {
    					remainingKeys.push(fullKey);
    				}

    				if (typeof obj[key] === 'object' && obj[key] !== null) {
    					traverseObject(obj[key], fullKey);
    				}
    			}
    		}
    	}

    	traverseObject(json);
    	return { filteredKeys, remainingKeys };
    }

    function instance$r($$self, $$props, $$invalidate) {
    	let $timelines;
    	let $numEvents;
    	let $numTimelines;
    	let $mergedTimeline;
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('BrainstormStateTransitionsRandom', slots, []);
    	let numTimelines = writable(2); // Default to 2 timelines
    	validate_store(numTimelines, 'numTimelines');
    	component_subscribe($$self, numTimelines, value => $$invalidate(7, $numTimelines = value));
    	let timelines = writable([]);
    	validate_store(timelines, 'timelines');
    	component_subscribe($$self, timelines, value => $$invalidate(5, $timelines = value));
    	let mergedTimeline = writable([]);
    	validate_store(mergedTimeline, 'mergedTimeline');
    	component_subscribe($$self, mergedTimeline, value => $$invalidate(8, $mergedTimeline = value));
    	let numEvents = writable(3); // Default to 3 events per timeline
    	validate_store(numEvents, 'numEvents');
    	component_subscribe($$self, numEvents, value => $$invalidate(6, $numEvents = value));
    	let sequence = [];
    	let playerSequence = [];
    	let enemySequence = [];
    	let isTwoColumnLayout = false;
    	let jsonScaffold;

    	// Predefined events lists
    	const characterEvents = [
    		'exploreLocation',
    		'discoverClue',
    		'meetCharacter',
    		'solveRiddle',
    		'findItem',
    		'faceChallenge',
    		'makeDecision',
    		'engageBattle',
    		'unlockAbility',
    		'learnSecret',
    		'completeMission',
    		'experienceSetback',
    		'earnReward',
    		'uncoverMystery',
    		'formAlliance',
    		'faceBetrayal',
    		'confrontNemesis',
    		'makeDiscovery',
    		'overcomeLoss',
    		'achieveVictory'
    	];

    	const itemEvents = [
    		'findItem',
    		'inspectItem',
    		'repairItem',
    		'upgradeItem',
    		'useItem',
    		'loseItem',
    		'tradeItem',
    		'giftItem',
    		'stealItem',
    		'duplicateItem',
    		'enchantItem',
    		'destroyItem',
    		'sellItem',
    		'buyItem',
    		'combineItems',
    		'identifyItem',
    		'storeItem',
    		'retrieveItem',
    		'hideItem',
    		'revealItem',
    		'consumeItem',
    		'studyItem',
    		'activateItem',
    		'deactivateItem',
    		'analyzeItem'
    	];

    	const environmentEvents = [
    		'changeWeather',
    		'triggerEarthquake',
    		'causeFlood',
    		'startFire',
    		'spawnMonster',
    		'discoverHiddenPath',
    		'openPortal',
    		'closePortal',
    		'createObstacle',
    		'removeObstacle',
    		'alterTerrain',
    		'revealSecretArea',
    		'startStorm',
    		'endStorm',
    		'activateTrap',
    		'deactivateTrap',
    		'spawnTreasure',
    		'shiftLandscape',
    		'changeSeason',
    		'dayToNight',
    		'nightToDay',
    		'polluteArea',
    		'purifyArea',
    		'collapseStructure',
    		'repairStructure'
    	];

    	const statsEvents = [
    		'increaseHealth',
    		'decreaseHealth',
    		'gainExperience',
    		'loseExperience',
    		'boostStrength',
    		'reduceStrength',
    		'improveAgility',
    		'diminishAgility',
    		'raiseIntelligence',
    		'lowerIntelligence',
    		'enhanceStamina',
    		'drainStamina',
    		'amplifyLuck',
    		'weakenLuck',
    		'upgradeSkill',
    		'downgradeSkill',
    		'gainLevel',
    		'loseLevel',
    		'increaseDefense',
    		'decreaseDefense',
    		'improveCharisma',
    		'reduceCharisma',
    		'boostMana',
    		'drainMana',
    		'increaseSpeed'
    	];

    	// Follow-up events
    	let followUpEvents = {
    		'meetCharacter': [
    			'interactWithCharacterAgain',
    			'receiveHelpFrommetCharacter',
    			'charactermetBetraysProtagonist'
    		],
    		'discoverClue': [
    			'followUpOnpreviousClue',
    			'previousclueLeadsToDeadEnd',
    			'previousclueUnlocksNewPath'
    		],
    		'faceChallenge': [
    			'overcomepreviousChallengeWithNewApproach',
    			'failpreviousChallengeWithConsequences',
    			'discoverHiddenOpportunityInpreviousChallenge'
    		],
    		'engageBattle': [
    			'emergeFrompreviousBattleVictorious',
    			'sufferDefeatInpreviousBattle',
    			'forgeUnlikelyAlliancefrompreviousBattle',
    			'negativesideeffectofpreviousbattle'
    		]
    	};

    	// Data for JSON scaffold
    	let background = '/AutoGameBackgrounds/theme_background.png';

    	let inventory = [
    		{
    			type: "weapon",
    			name: "Random weapon",
    			description: "A powerful weapon."
    		}
    	];

    	let skills = [
    		{
    			branch: "Skill Group 1",
    			name: "Skill One",
    			learned: false
    		}
    	];

    	let persistentTargets = [
    		{
    			name: "Background Target 1",
    			x: 500,
    			y: 500,
    			collisionType: "alert",
    			collisiontext: "First Test"
    		}
    	];

    	let story = [
    		{
    			part: 0,
    			objectives: [
    				{
    					id: 1,
    					name: "Mission Details",
    					complete: false,
    					progress: 0,
    					inventoryRequired: []
    				}
    			],
    			targets: [
    				{
    					name: "Target 1",
    					x: 150,
    					y: 150,
    					collisionType: "alert",
    					collisiontext: "First Test"
    				}
    			]
    		}
    	];

    	let actions = {
    		Buybook() {
    			
    		}, // Logic to buy the book
    		// Logic to buy the book
    		
    	};

    	let stateobjects = {};

    	// Function to create timelines
    	function createTimelines() {
    		const newTimelines = [];

    		for (let i = 1; i <= $numTimelines; i++) {
    			newTimelines.push({ id: i, points: [] });
    		}

    		timelines.set(newTimelines);
    	}

    	// Function to generate random points for a timeline
    	function generateRandomPoints(timelineId) {
    		const allEvents = [...characterEvents, ...itemEvents, ...environmentEvents, ...statsEvents];

    		const updatedTimelines = $timelines.map(timeline => {
    			if (timeline.id === timelineId) {
    				const points = [];

    				for (let i = 0; i < $numEvents; i++) {
    					let year = Math.floor(Math.random() * (2023 - 1900 + 1)) + 1900;
    					let event = allEvents[Math.floor(Math.random() * allEvents.length)];
    					let description = `Timeline ${timelineId}, Event ${i + 1}: ${event}`;
    					points.push({ year, description, timelineId });
    				}

    				return { ...timeline, points };
    			}

    			return timeline;
    		});

    		timelines.set(updatedTimelines);
    	}

    	// Function to merge timelines
    	function mergeTimelines() {
    		const allPoints = $timelines.flatMap(timeline => timeline.points);
    		allPoints.sort((a, b) => a.year - b.year);
    		mergedTimeline.set(allPoints);
    	}

    	// Function to generate a sequence of events
    	function generateSequence() {
    		$$invalidate(0, sequence = []);

    		for (let i = 0; i < 30; i++) {
    			const randomIndex = Math.floor(Math.random() * characterEvents.length);
    			sequence.push(characterEvents[randomIndex]);
    		}

    		$$invalidate(1, playerSequence = [...sequence]);
    		$$invalidate(3, isTwoColumnLayout = false);
    	}

    	// Function to generate a follow-up sequence of events
    	function generateFollowUpSequence() {
    		const extendedSequence = [...sequence];

    		for (let i = 0; i < sequence.length; i++) {
    			const currentEvent = sequence[i];

    			if (followUpEvents[currentEvent]) {
    				const followUpIndex = Math.floor(Math.random() * followUpEvents[currentEvent].length);
    				const followUpEvent = followUpEvents[currentEvent][followUpIndex];
    				extendedSequence.push(followUpEvent);
    			}
    		}

    		$$invalidate(0, sequence = extendedSequence);
    		$$invalidate(1, playerSequence = [...sequence]);
    		$$invalidate(3, isTwoColumnLayout = false);
    	}

    	// Function to generate a main enemy sequence
    	function generateMainEnemySequence() {
    		const subordinateSequences = [];
    		const subordinateCount = Math.floor(Math.random() * 5) + 1;

    		// Generate main enemy events
    		for (let i = 0; i < 10; i++) {
    			const randomIndex = Math.floor(Math.random() * characterEvents.length);
    			enemySequence.push(`mainEnemy${characterEvents[randomIndex]}`);
    		}

    		// Generate subordinate events
    		for (let i = 0; i < subordinateCount; i++) {
    			const subordinateSequence = [];

    			for (let j = 0; j < 5; j++) {
    				const randomIndex = Math.floor(Math.random() * characterEvents.length);
    				subordinateSequence.push(`enemysubordinate${i + 1}${characterEvents[randomIndex]}`);
    			}

    			subordinateSequences.push(subordinateSequence);
    		}

    		// Randomize the order of player, main enemy, and subordinate events
    		const combinedSequence = [...playerSequence, ...enemySequence, ...subordinateSequences.flat()];

    		for (let i = combinedSequence.length - 1; i > 0; i--) {
    			const j = Math.floor(Math.random() * (i + 1));
    			[combinedSequence[i], combinedSequence[j]] = [combinedSequence[j], combinedSequence[i]];
    		}

    		$$invalidate(2, enemySequence = combinedSequence);
    		$$invalidate(3, isTwoColumnLayout = true);
    	}

    	// Function to copy a certain number of items to clipboard
    	function copyToClipboard(count) {
    		const selectedItems = sequence.slice(0, count);
    		const textToCopy = 'Write a story in this order - ' + selectedItems.join(', ');
    		navigator.clipboard.writeText(textToCopy);
    		alert(`Copied ${count} items to clipboard!`);
    	}

    	// Function to generate the JSON scaffold
    	function generateJSONScaffold() {
    		$$invalidate(4, jsonScaffold = {
    			//const
    			'User Custom': {
    				background,
    				inventory,
    				skills,
    				persistentTargets,
    				story: sequence.map((event, index) => ({
    					part: index,
    					objectives: [
    						{
    							id: index + 1,
    							name: `Objective for ${event}`,
    							complete: false,
    							progress: 0,
    							inventoryRequired: []
    						}
    					],
    					targets: [
    						{
    							name: `Target for ${event}`,
    							x: 100 * (index + 1),
    							y: 100 * (index + 1),
    							collisionType: "alert",
    							collisiontext: `Target for ${event}`
    						}
    					]
    				})),
    				actions,
    				stateobjects
    			}
    		});

    		console.log(JSON.stringify(jsonScaffold, null, 2));
    	}

    	// Create initial timelines on mount
    	onMount(() => {
    		createTimelines();
    	});

    	let json = {};
    	let filteredKeys = [];
    	let remainingKeys = [];
    	let llmresponseformat = '{"story" : [{},{},... ]';

    	function extractKeys() {
    		try {
    			//json = JSON.parse(jsonInput);
    			json = jsonScaffold; //randomContentStructureSubtargets

    			const { filteredKeys: filtered, remainingKeys: remaining } = getKeysFromJSON$2(json, key => {
    				return key.includes('name') || key.includes('collisiontext'); //|| modal fields;
    			}); //return key.endsWith('.x') || key.endsWith('.y') || key.includes('Type') || key.includes('complete');

    			filteredKeys = filtered;
    			remainingKeys = remaining;
    		} catch(error) {
    			console.error('Invalid JSON:', error);
    			filteredKeys = [];
    			remainingKeys = [];
    		}
    	}

    	function copyextractedkeysToClipboard(count) {
    		extractKeys();
    		navigator.clipboard.writeText(filteredKeys);
    		alert(`Copied ${count} items to clipboard!`);
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$d.warn(`<BrainstormStateTransitionsRandom> was created with unknown prop '${key}'`);
    	});

    	function input0_input_handler() {
    		$numTimelines = to_number(this.value);
    		numTimelines.set($numTimelines);
    	}

    	function input1_input_handler() {
    		$numEvents = to_number(this.value);
    		numEvents.set($numEvents);
    	}

    	const click_handler = timeline => generateRandomPoints(timeline.id);
    	const click_handler_1 = () => copyToClipboard(5);
    	const click_handler_2 = () => copyToClipboard(10);
    	const click_handler_3 = () => copyToClipboard(30);
    	const click_handler_4 = () => copyToClipboard(sequence.length);
    	const click_handler_5 = () => copyextractedkeysToClipboard();

    	$$self.$capture_state = () => ({
    		writable,
    		onMount,
    		numTimelines,
    		timelines,
    		mergedTimeline,
    		numEvents,
    		sequence,
    		playerSequence,
    		enemySequence,
    		isTwoColumnLayout,
    		jsonScaffold,
    		characterEvents,
    		itemEvents,
    		environmentEvents,
    		statsEvents,
    		followUpEvents,
    		background,
    		inventory,
    		skills,
    		persistentTargets,
    		story,
    		actions,
    		stateobjects,
    		createTimelines,
    		generateRandomPoints,
    		mergeTimelines,
    		generateSequence,
    		generateFollowUpSequence,
    		generateMainEnemySequence,
    		copyToClipboard,
    		generateJSONScaffold,
    		json,
    		filteredKeys,
    		remainingKeys,
    		llmresponseformat,
    		getKeysFromJSON: getKeysFromJSON$2,
    		extractKeys,
    		copyextractedkeysToClipboard,
    		$timelines,
    		$numEvents,
    		$numTimelines,
    		$mergedTimeline
    	});

    	$$self.$inject_state = $$props => {
    		if ('numTimelines' in $$props) $$invalidate(9, numTimelines = $$props.numTimelines);
    		if ('timelines' in $$props) $$invalidate(10, timelines = $$props.timelines);
    		if ('mergedTimeline' in $$props) $$invalidate(11, mergedTimeline = $$props.mergedTimeline);
    		if ('numEvents' in $$props) $$invalidate(12, numEvents = $$props.numEvents);
    		if ('sequence' in $$props) $$invalidate(0, sequence = $$props.sequence);
    		if ('playerSequence' in $$props) $$invalidate(1, playerSequence = $$props.playerSequence);
    		if ('enemySequence' in $$props) $$invalidate(2, enemySequence = $$props.enemySequence);
    		if ('isTwoColumnLayout' in $$props) $$invalidate(3, isTwoColumnLayout = $$props.isTwoColumnLayout);
    		if ('jsonScaffold' in $$props) $$invalidate(4, jsonScaffold = $$props.jsonScaffold);
    		if ('followUpEvents' in $$props) followUpEvents = $$props.followUpEvents;
    		if ('background' in $$props) background = $$props.background;
    		if ('inventory' in $$props) inventory = $$props.inventory;
    		if ('skills' in $$props) skills = $$props.skills;
    		if ('persistentTargets' in $$props) persistentTargets = $$props.persistentTargets;
    		if ('story' in $$props) story = $$props.story;
    		if ('actions' in $$props) actions = $$props.actions;
    		if ('stateobjects' in $$props) stateobjects = $$props.stateobjects;
    		if ('json' in $$props) json = $$props.json;
    		if ('filteredKeys' in $$props) filteredKeys = $$props.filteredKeys;
    		if ('remainingKeys' in $$props) remainingKeys = $$props.remainingKeys;
    		if ('llmresponseformat' in $$props) llmresponseformat = $$props.llmresponseformat;
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		sequence,
    		playerSequence,
    		enemySequence,
    		isTwoColumnLayout,
    		jsonScaffold,
    		$timelines,
    		$numEvents,
    		$numTimelines,
    		$mergedTimeline,
    		numTimelines,
    		timelines,
    		mergedTimeline,
    		numEvents,
    		createTimelines,
    		generateRandomPoints,
    		mergeTimelines,
    		generateSequence,
    		generateFollowUpSequence,
    		generateMainEnemySequence,
    		copyToClipboard,
    		generateJSONScaffold,
    		copyextractedkeysToClipboard,
    		input0_input_handler,
    		input1_input_handler,
    		click_handler,
    		click_handler_1,
    		click_handler_2,
    		click_handler_3,
    		click_handler_4,
    		click_handler_5
    	];
    }

    class BrainstormStateTransitionsRandom extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$r, create_fragment$r, safe_not_equal, {}, null, [-1, -1]);

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "BrainstormStateTransitionsRandom",
    			options,
    			id: create_fragment$r.name
    		});
    	}
    }

    /* src\testbrainstorminstantpopulate.svelte generated by Svelte v3.59.2 */

    const { console: console_1$c } = globals;
    const file$q = "src\\testbrainstorminstantpopulate.svelte";

    function get_each_context$j(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[6] = list[i];
    	return child_ctx;
    }

    function get_each_context_1$b(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[6] = list[i];
    	return child_ctx;
    }

    // (70:12) {#each filteredKeys as key}
    function create_each_block_1$b(ctx) {
    	let li;
    	let t_value = /*key*/ ctx[6] + "";
    	let t;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t = text(t_value);
    			add_location(li, file$q, 70, 14, 2213);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*filteredKeys*/ 2 && t_value !== (t_value = /*key*/ ctx[6] + "")) set_data_dev(t, t_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$b.name,
    		type: "each",
    		source: "(70:12) {#each filteredKeys as key}",
    		ctx
    	});

    	return block;
    }

    // (79:12) {#each remainingKeys as key}
    function create_each_block$j(ctx) {
    	let li;
    	let t_value = /*key*/ ctx[6] + "";
    	let t;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t = text(t_value);
    			add_location(li, file$q, 79, 14, 2410);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*remainingKeys*/ 4 && t_value !== (t_value = /*key*/ ctx[6] + "")) set_data_dev(t, t_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$j.name,
    		type: "each",
    		source: "(79:12) {#each remainingKeys as key}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$q(ctx) {
    	let main;
    	let h1;
    	let t1;
    	let div4;
    	let div0;
    	let label;
    	let t3;
    	let textarea;
    	let t4;
    	let button;
    	let t6;
    	let div3;
    	let div1;
    	let h20;
    	let t8;
    	let ul0;
    	let t9;
    	let div2;
    	let h21;
    	let t11;
    	let ul1;
    	let mounted;
    	let dispose;
    	let each_value_1 = /*filteredKeys*/ ctx[1];
    	validate_each_argument(each_value_1);
    	let each_blocks_1 = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks_1[i] = create_each_block_1$b(get_each_context_1$b(ctx, each_value_1, i));
    	}

    	let each_value = /*remainingKeys*/ ctx[2];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$j(get_each_context$j(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			main = element$1("main");
    			h1 = element$1("h1");
    			h1.textContent = "JSON Key Extractor";
    			t1 = space();
    			div4 = element$1("div");
    			div0 = element$1("div");
    			label = element$1("label");
    			label.textContent = "Enter JSON:";
    			t3 = space();
    			textarea = element$1("textarea");
    			t4 = space();
    			button = element$1("button");
    			button.textContent = "Extract Keys";
    			t6 = space();
    			div3 = element$1("div");
    			div1 = element$1("div");
    			h20 = element$1("h2");
    			h20.textContent = "Filtered Keys:";
    			t8 = space();
    			ul0 = element$1("ul");

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				each_blocks_1[i].c();
    			}

    			t9 = space();
    			div2 = element$1("div");
    			h21 = element$1("h2");
    			h21.textContent = "Remaining Keys:";
    			t11 = space();
    			ul1 = element$1("ul");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(h1, file$q, 56, 4, 1730);
    			attr_dev(label, "for", "jsonInput");
    			add_location(label, file$q, 60, 8, 1834);
    			attr_dev(textarea, "id", "jsonInput");
    			attr_dev(textarea, "class", "svelte-1t47hvo");
    			add_location(textarea, file$q, 61, 8, 1886);
    			add_location(button, file$q, 62, 8, 1985);
    			attr_dev(div0, "class", "input-column svelte-1t47hvo");
    			add_location(div0, file$q, 59, 6, 1798);
    			add_location(h20, file$q, 67, 10, 2117);
    			add_location(ul0, file$q, 68, 10, 2152);
    			add_location(div1, file$q, 66, 8, 2100);
    			add_location(h21, file$q, 76, 10, 2312);
    			add_location(ul1, file$q, 77, 10, 2348);
    			add_location(div2, file$q, 75, 8, 2295);
    			attr_dev(div3, "class", "output-column svelte-1t47hvo");
    			add_location(div3, file$q, 65, 6, 2063);
    			attr_dev(div4, "class", "container svelte-1t47hvo");
    			add_location(div4, file$q, 58, 4, 1767);
    			add_location(main, file$q, 55, 2, 1718);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, main, anchor);
    			append_dev(main, h1);
    			append_dev(main, t1);
    			append_dev(main, div4);
    			append_dev(div4, div0);
    			append_dev(div0, label);
    			append_dev(div0, t3);
    			append_dev(div0, textarea);
    			set_input_value(textarea, /*jsonInput*/ ctx[0]);
    			append_dev(div0, t4);
    			append_dev(div0, button);
    			append_dev(div4, t6);
    			append_dev(div4, div3);
    			append_dev(div3, div1);
    			append_dev(div1, h20);
    			append_dev(div1, t8);
    			append_dev(div1, ul0);

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				if (each_blocks_1[i]) {
    					each_blocks_1[i].m(ul0, null);
    				}
    			}

    			append_dev(div3, t9);
    			append_dev(div3, div2);
    			append_dev(div2, h21);
    			append_dev(div2, t11);
    			append_dev(div2, ul1);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(ul1, null);
    				}
    			}

    			if (!mounted) {
    				dispose = [
    					listen_dev(textarea, "input", /*textarea_input_handler*/ ctx[4]),
    					listen_dev(textarea, "input", autoExpandTextarea$2, false, false, false, false),
    					listen_dev(button, "click", /*extractKeys*/ ctx[3], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*jsonInput*/ 1) {
    				set_input_value(textarea, /*jsonInput*/ ctx[0]);
    			}

    			if (dirty & /*filteredKeys*/ 2) {
    				each_value_1 = /*filteredKeys*/ ctx[1];
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$b(ctx, each_value_1, i);

    					if (each_blocks_1[i]) {
    						each_blocks_1[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_1[i] = create_each_block_1$b(child_ctx);
    						each_blocks_1[i].c();
    						each_blocks_1[i].m(ul0, null);
    					}
    				}

    				for (; i < each_blocks_1.length; i += 1) {
    					each_blocks_1[i].d(1);
    				}

    				each_blocks_1.length = each_value_1.length;
    			}

    			if (dirty & /*remainingKeys*/ 4) {
    				each_value = /*remainingKeys*/ ctx[2];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$j(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$j(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(ul1, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(main);
    			destroy_each(each_blocks_1, detaching);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$q.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function getKeysFromJSON$1(json, filter) {
    	const filteredKeys = [];
    	const remainingKeys = [];

    	function traverseObject(obj, parentKey = '') {
    		for (const key in obj) {
    			if (obj.hasOwnProperty(key)) {
    				const fullKey = parentKey ? `${parentKey}.${key}` : key;

    				if (typeof filter === 'function' && filter(fullKey)) {
    					filteredKeys.push(fullKey);
    				} else {
    					remainingKeys.push(fullKey);
    				}

    				if (typeof obj[key] === 'object' && obj[key] !== null) {
    					traverseObject(obj[key], fullKey);
    				}
    			}
    		}
    	}

    	traverseObject(json);
    	return { filteredKeys, remainingKeys };
    }

    function autoExpandTextarea$2(event) {
    	const textarea = event.target;
    	textarea.style.height = 'auto';
    	textarea.style.height = `${textarea.scrollHeight}px`;
    }

    function instance$q($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('Testbrainstorminstantpopulate', slots, []);
    	let jsonInput = '';
    	let json = {};
    	let filteredKeys = [];
    	let remainingKeys = [];

    	function extractKeys() {
    		try {
    			json = JSON.parse(jsonInput);

    			const { filteredKeys: filtered, remainingKeys: remaining } = getKeysFromJSON$1(json, key => {
    				return key.includes('name') || key.includes('collisiontext'); //|| modal fields;
    			}); //return key.endsWith('.x') || key.endsWith('.y') || key.includes('Type') || key.includes('complete');

    			$$invalidate(1, filteredKeys = filtered);
    			$$invalidate(2, remainingKeys = remaining);
    		} catch(error) {
    			console.error('Invalid JSON:', error);
    			$$invalidate(1, filteredKeys = []);
    			$$invalidate(2, remainingKeys = []);
    		}
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$c.warn(`<Testbrainstorminstantpopulate> was created with unknown prop '${key}'`);
    	});

    	function textarea_input_handler() {
    		jsonInput = this.value;
    		$$invalidate(0, jsonInput);
    	}

    	$$self.$capture_state = () => ({
    		jsonInput,
    		json,
    		filteredKeys,
    		remainingKeys,
    		getKeysFromJSON: getKeysFromJSON$1,
    		extractKeys,
    		autoExpandTextarea: autoExpandTextarea$2
    	});

    	$$self.$inject_state = $$props => {
    		if ('jsonInput' in $$props) $$invalidate(0, jsonInput = $$props.jsonInput);
    		if ('json' in $$props) json = $$props.json;
    		if ('filteredKeys' in $$props) $$invalidate(1, filteredKeys = $$props.filteredKeys);
    		if ('remainingKeys' in $$props) $$invalidate(2, remainingKeys = $$props.remainingKeys);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [jsonInput, filteredKeys, remainingKeys, extractKeys, textarea_input_handler];
    }

    class Testbrainstorminstantpopulate extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$q, create_fragment$q, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "Testbrainstorminstantpopulate",
    			options,
    			id: create_fragment$q.name
    		});
    	}
    }

    /* src\testjsonmatchingfieldmerge.svelte generated by Svelte v3.59.2 */

    const { Object: Object_1$6, console: console_1$b } = globals;
    const file$p = "src\\testjsonmatchingfieldmerge.svelte";

    // (195:4) {#if Object.keys(mergedJson).length > 0}
    function create_if_block$e(ctx) {
    	let div;
    	let h3;
    	let t1;
    	let pre;
    	let t2_value = JSON.stringify(/*mergedJson*/ ctx[2], null, 2) + "";
    	let t2;

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			h3 = element$1("h3");
    			h3.textContent = "Merged JSON:";
    			t1 = space();
    			pre = element$1("pre");
    			t2 = text(t2_value);
    			add_location(h3, file$p, 196, 8, 4625);
    			add_location(pre, file$p, 197, 8, 4656);
    			add_location(div, file$p, 195, 6, 4610);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, h3);
    			append_dev(div, t1);
    			append_dev(div, pre);
    			append_dev(pre, t2);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*mergedJson*/ 4 && t2_value !== (t2_value = JSON.stringify(/*mergedJson*/ ctx[2], null, 2) + "")) set_data_dev(t2, t2_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$e.name,
    		type: "if",
    		source: "(195:4) {#if Object.keys(mergedJson).length > 0}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$p(ctx) {
    	let main;
    	let h2;
    	let t1;
    	let div0;
    	let h30;
    	let t3;
    	let textarea0;
    	let t4;
    	let div1;
    	let h31;
    	let t6;
    	let textarea1;
    	let t7;
    	let button;
    	let t9;
    	let show_if = Object.keys(/*mergedJson*/ ctx[2]).length > 0;
    	let mounted;
    	let dispose;
    	let if_block = show_if && create_if_block$e(ctx);

    	const block = {
    		c: function create() {
    			main = element$1("main");
    			h2 = element$1("h2");
    			h2.textContent = "JSON Merger";
    			t1 = space();
    			div0 = element$1("div");
    			h30 = element$1("h3");
    			h30.textContent = "Original JSON:";
    			t3 = space();
    			textarea0 = element$1("textarea");
    			t4 = space();
    			div1 = element$1("div");
    			h31 = element$1("h3");
    			h31.textContent = "Snippet JSON:";
    			t6 = space();
    			textarea1 = element$1("textarea");
    			t7 = space();
    			button = element$1("button");
    			button.textContent = "Merge JSON";
    			t9 = space();
    			if (if_block) if_block.c();
    			add_location(h2, file$p, 180, 4, 4178);
    			add_location(h30, file$p, 183, 6, 4221);
    			attr_dev(textarea0, "class", "svelte-1jgnkl9");
    			add_location(textarea0, file$p, 184, 6, 4252);
    			add_location(div0, file$p, 182, 4, 4208);
    			add_location(h31, file$p, 188, 6, 4369);
    			attr_dev(textarea1, "class", "svelte-1jgnkl9");
    			add_location(textarea1, file$p, 189, 6, 4399);
    			add_location(div1, file$p, 187, 4, 4356);
    			add_location(button, file$p, 192, 4, 4502);
    			add_location(main, file$p, 179, 2, 4166);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, main, anchor);
    			append_dev(main, h2);
    			append_dev(main, t1);
    			append_dev(main, div0);
    			append_dev(div0, h30);
    			append_dev(div0, t3);
    			append_dev(div0, textarea0);
    			set_input_value(textarea0, /*originalJsonInput*/ ctx[0]);
    			append_dev(main, t4);
    			append_dev(main, div1);
    			append_dev(div1, h31);
    			append_dev(div1, t6);
    			append_dev(div1, textarea1);
    			set_input_value(textarea1, /*snippetJsonInput*/ ctx[1]);
    			append_dev(main, t7);
    			append_dev(main, button);
    			append_dev(main, t9);
    			if (if_block) if_block.m(main, null);

    			if (!mounted) {
    				dispose = [
    					listen_dev(textarea0, "input", /*textarea0_input_handler*/ ctx[4]),
    					listen_dev(textarea0, "input", autoExpandTextarea$1, false, false, false, false),
    					listen_dev(textarea1, "input", /*textarea1_input_handler*/ ctx[5]),
    					listen_dev(textarea1, "input", autoExpandTextarea$1, false, false, false, false),
    					listen_dev(button, "click", /*handleMerge*/ ctx[3], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*originalJsonInput*/ 1) {
    				set_input_value(textarea0, /*originalJsonInput*/ ctx[0]);
    			}

    			if (dirty & /*snippetJsonInput*/ 2) {
    				set_input_value(textarea1, /*snippetJsonInput*/ ctx[1]);
    			}

    			if (dirty & /*mergedJson*/ 4) show_if = Object.keys(/*mergedJson*/ ctx[2]).length > 0;

    			if (show_if) {
    				if (if_block) {
    					if_block.p(ctx, dirty);
    				} else {
    					if_block = create_if_block$e(ctx);
    					if_block.c();
    					if_block.m(main, null);
    				}
    			} else if (if_block) {
    				if_block.d(1);
    				if_block = null;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(main);
    			if (if_block) if_block.d();
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$p.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function mergeJSON(original, snippet) {
    	const merged = JSON.parse(JSON.stringify(original));

    	// Update objectives
    	if (Array.isArray(snippet.story.objectives)) {
    		merged.story[0].objectives.forEach((obj, index) => {
    			if (snippet.story.objectives[index]) {
    				obj.name = snippet.story.objectives[index].name;
    			}
    		});
    	}

    	// Update targets
    	if (Array.isArray(snippet.story.targets)) {
    		merged.story[0].targets.forEach((target, index) => {
    			if (snippet.story.targets[index]) {
    				target.name = snippet.story.targets[index].name;
    				target.collisiontext = snippet.story.targets[index].collisiontext;

    				// Update subTargets recursively
    				function updateSubTargets(originalSubTargets, snippetSubTargets) {
    					originalSubTargets.forEach((subTarget, subIndex) => {
    						if (snippetSubTargets[subIndex]) {
    							subTarget.name = snippetSubTargets[subIndex].name;
    							subTarget.collisiontext = snippetSubTargets[subIndex].collisiontext;

    							if (Array.isArray(snippetSubTargets[subIndex].subTargets)) {
    								updateSubTargets(subTarget.subTargets, snippetSubTargets[subIndex].subTargets);
    							}
    						}
    					});
    				}

    				if (Array.isArray(target.subTargets) && Array.isArray(snippet.story.targets[index].subTargets)) {
    					updateSubTargets(target.subTargets, snippet.story.targets[index].subTargets);
    				}
    			}
    		});
    	}

    	return merged;
    }

    function autoExpandTextarea$1(event) {
    	const textarea = event.target;
    	textarea.style.height = 'auto';
    	textarea.style.height = `${textarea.scrollHeight}px`;
    }

    function instance$p($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('Testjsonmatchingfieldmerge', slots, []);

    	let originalJsonInput = `{
"story": [
{
"part": 0,
"objectives": [
{
"id": "Objective1_1",
"name": "Objective 1.1",
"complete": false
},
{
"id": "Objective1_2",
"name": "Objective 1.2",
"complete": false
}
],
"targets": [
{
"name": "Target0_1",
"x": 55,
"y": 4,
"collisionType": "alert",
"collisiontext": "Placeholder text for Target 0.1",
"subTargets": [
{
"name": "Target1_1",
"x": 63,
"y": 4,
"collisionType": "alert",
"collisiontext": "Placeholder text for Target 1.1",
"subTargets": [
{
"name": "Target2_1",
"x": 88,
"y": 87,
"collisionType": "alert",
"collisiontext": "Placeholder text for Target 2.1"
}
]
},
{
"name": "Target1_2",
"x": 89,
"y": 5,
"collisionType": "alert",
"collisiontext": "Placeholder text for Target 1.2",
"subTargets": [
{
"name": "Target2_1",
"x": 69,
"y": 92,
"collisionType": "alert",
"collisiontext": "Placeholder text for Target 2.1"
}
]
}
]
},
{
"name": "Target0_2",
"x": 12,
"y": 59,
"collisionType": "alert",
"collisiontext": "Placeholder text for Target 0.2"
}
]
}
]
}`;

    	let snippetJsonInput = `{
"story": {
"objectives": [
{"name": "Master the ancient magic"},
{"name": "Unite the warring clans"}
],
"targets": [
{
"name": "The ancient temple",
"collisiontext": "Enter the temple",
"subTargets": [
{
"name": "The sacred artifact",
"collisiontext": "Take the artifact",
"subTargets": [
{
"name": "The ancient scroll",
"collisiontext": "Unroll the scroll"
}
]
},
{
"name": "The hidden chamber",
"collisiontext": "Discover the chamber",
"subTargets": [
{
"name": "The ancient relic",
"collisiontext": "Claim the relic"
}
]
}
]
},
{
"name": "The dark forest",
"collisiontext": "Venture into the forest"
}
]
}
}`;

    	let originalJson = {};
    	let snippetJson = {};
    	let mergedJson = {};

    	function handleMerge() {
    		try {
    			originalJson = JSON.parse(originalJsonInput);
    			snippetJson = JSON.parse(snippetJsonInput);
    			$$invalidate(2, mergedJson = mergeJSON(originalJson, snippetJson));
    		} catch(error) {
    			console.error('Invalid JSON:', error);
    			$$invalidate(2, mergedJson = {});
    		}
    	}

    	const writable_props = [];

    	Object_1$6.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$b.warn(`<Testjsonmatchingfieldmerge> was created with unknown prop '${key}'`);
    	});

    	function textarea0_input_handler() {
    		originalJsonInput = this.value;
    		$$invalidate(0, originalJsonInput);
    	}

    	function textarea1_input_handler() {
    		snippetJsonInput = this.value;
    		$$invalidate(1, snippetJsonInput);
    	}

    	$$self.$capture_state = () => ({
    		originalJsonInput,
    		snippetJsonInput,
    		originalJson,
    		snippetJson,
    		mergedJson,
    		mergeJSON,
    		handleMerge,
    		autoExpandTextarea: autoExpandTextarea$1
    	});

    	$$self.$inject_state = $$props => {
    		if ('originalJsonInput' in $$props) $$invalidate(0, originalJsonInput = $$props.originalJsonInput);
    		if ('snippetJsonInput' in $$props) $$invalidate(1, snippetJsonInput = $$props.snippetJsonInput);
    		if ('originalJson' in $$props) originalJson = $$props.originalJson;
    		if ('snippetJson' in $$props) snippetJson = $$props.snippetJson;
    		if ('mergedJson' in $$props) $$invalidate(2, mergedJson = $$props.mergedJson);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		originalJsonInput,
    		snippetJsonInput,
    		mergedJson,
    		handleMerge,
    		textarea0_input_handler,
    		textarea1_input_handler
    	];
    }

    class Testjsonmatchingfieldmerge extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$p, create_fragment$p, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "Testjsonmatchingfieldmerge",
    			options,
    			id: create_fragment$p.name
    		});
    	}
    }

    /* src\SimpleIFrame.svelte generated by Svelte v3.59.2 */

    const file$o = "src\\SimpleIFrame.svelte";

    function get_each_context$i(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[4] = list[i];
    	return child_ctx;
    }

    // (17:6) {#each webpages as webpage}
    function create_each_block$i(ctx) {
    	let option;
    	let t_value = /*webpage*/ ctx[4].name + "";
    	let t;
    	let option_value_value;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = option_value_value = /*webpage*/ ctx[4].url;
    			option.value = option.__value;
    			add_location(option, file$o, 17, 8, 538);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*webpages*/ 1 && t_value !== (t_value = /*webpage*/ ctx[4].name + "")) set_data_dev(t, t_value);

    			if (dirty & /*webpages*/ 1 && option_value_value !== (option_value_value = /*webpage*/ ctx[4].url)) {
    				prop_dev(option, "__value", option_value_value);
    				option.value = option.__value;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$i.name,
    		type: "each",
    		source: "(17:6) {#each webpages as webpage}",
    		ctx
    	});

    	return block;
    }

    // (22:4) {#if selectedUrl}
    function create_if_block$d(ctx) {
    	let iframe;
    	let iframe_src_value;

    	const block = {
    		c: function create() {
    			iframe = element$1("iframe");
    			if (!src_url_equal(iframe.src, iframe_src_value = /*selectedUrl*/ ctx[1])) attr_dev(iframe, "src", iframe_src_value);
    			attr_dev(iframe, "title", "Webpage");
    			attr_dev(iframe, "width", "100%");
    			attr_dev(iframe, "height", "800px");
    			attr_dev(iframe, "frameborder", "0");
    			add_location(iframe, file$o, 22, 6, 662);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, iframe, anchor);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*selectedUrl, webpages*/ 3 && !src_url_equal(iframe.src, iframe_src_value = /*selectedUrl*/ ctx[1])) {
    				attr_dev(iframe, "src", iframe_src_value);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(iframe);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$d.name,
    		type: "if",
    		source: "(22:4) {#if selectedUrl}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$o(ctx) {
    	let div;
    	let select;
    	let option;
    	let t1;
    	let br;
    	let t2;
    	let mounted;
    	let dispose;
    	let each_value = /*webpages*/ ctx[0];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$i(get_each_context$i(ctx, each_value, i));
    	}

    	let if_block = /*selectedUrl*/ ctx[1] && create_if_block$d(ctx);

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			select = element$1("select");
    			option = element$1("option");
    			option.textContent = "Select a webpage";

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t1 = space();
    			br = element$1("br");
    			t2 = space();
    			if (if_block) if_block.c();
    			option.__value = "";
    			option.value = option.__value;
    			add_location(option, file$o, 15, 6, 451);
    			if (/*selectedUrl*/ ctx[1] === void 0) add_render_callback(() => /*select_change_handler*/ ctx[3].call(select));
    			add_location(select, file$o, 14, 4, 385);
    			add_location(br, file$o, 20, 4, 625);
    			add_location(div, file$o, 13, 2, 374);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, select);
    			append_dev(select, option);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(select, null);
    				}
    			}

    			select_option(select, /*selectedUrl*/ ctx[1], true);
    			append_dev(div, t1);
    			append_dev(div, br);
    			append_dev(div, t2);
    			if (if_block) if_block.m(div, null);

    			if (!mounted) {
    				dispose = [
    					listen_dev(select, "change", /*select_change_handler*/ ctx[3]),
    					listen_dev(select, "change", /*handleChange*/ ctx[2], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*webpages*/ 1) {
    				each_value = /*webpages*/ ctx[0];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$i(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$i(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(select, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}

    			if (dirty & /*selectedUrl, webpages*/ 3) {
    				select_option(select, /*selectedUrl*/ ctx[1]);
    			}

    			if (/*selectedUrl*/ ctx[1]) {
    				if (if_block) {
    					if_block.p(ctx, dirty);
    				} else {
    					if_block = create_if_block$d(ctx);
    					if_block.c();
    					if_block.m(div, null);
    				}
    			} else if (if_block) {
    				if_block.d(1);
    				if_block = null;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			destroy_each(each_blocks, detaching);
    			if (if_block) if_block.d();
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$o.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$o($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('SimpleIFrame', slots, []);
    	let selectedUrl = '';

    	let { webpages = [
    		{
    			name: 'Example 1',
    			url: 'https://www.example1.com'
    		},
    		{
    			name: 'Example 2',
    			url: 'https://www.example2.com'
    		},
    		{
    			name: 'Example 3',
    			url: 'https://www.example3.com'
    		}
    	] } = $$props;

    	const handleChange = event => {
    		$$invalidate(1, selectedUrl = event.target.value);
    	};

    	const writable_props = ['webpages'];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<SimpleIFrame> was created with unknown prop '${key}'`);
    	});

    	function select_change_handler() {
    		selectedUrl = select_value(this);
    		$$invalidate(1, selectedUrl);
    		$$invalidate(0, webpages);
    	}

    	$$self.$$set = $$props => {
    		if ('webpages' in $$props) $$invalidate(0, webpages = $$props.webpages);
    	};

    	$$self.$capture_state = () => ({ selectedUrl, webpages, handleChange });

    	$$self.$inject_state = $$props => {
    		if ('selectedUrl' in $$props) $$invalidate(1, selectedUrl = $$props.selectedUrl);
    		if ('webpages' in $$props) $$invalidate(0, webpages = $$props.webpages);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [webpages, selectedUrl, handleChange, select_change_handler];
    }

    class SimpleIFrame extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$o, create_fragment$o, safe_not_equal, { webpages: 0 });

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "SimpleIFrame",
    			options,
    			id: create_fragment$o.name
    		});
    	}

    	get webpages() {
    		throw new Error("<SimpleIFrame>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set webpages(value) {
    		throw new Error("<SimpleIFrame>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}
    }

    /* src\CustomGameConfigHelper.svelte generated by Svelte v3.59.2 */

    const { Object: Object_1$5, console: console_1$a } = globals;
    const file$n = "src\\CustomGameConfigHelper.svelte";

    function get_each_context$h(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[32] = list[i];
    	return child_ctx;
    }

    function get_each_context_1$a(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[32] = list[i];
    	return child_ctx;
    }

    // (360:16) {#each filteredKeys as key}
    function create_each_block_1$a(ctx) {
    	let li;
    	let t_value = /*key*/ ctx[32] + "";
    	let t;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t = text(t_value);
    			add_location(li, file$n, 360, 16, 14741);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*filteredKeys*/ 1 && t_value !== (t_value = /*key*/ ctx[32] + "")) set_data_dev(t, t_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$a.name,
    		type: "each",
    		source: "(360:16) {#each filteredKeys as key}",
    		ctx
    	});

    	return block;
    }

    // (369:16) {#each remainingKeys as key}
    function create_each_block$h(ctx) {
    	let li;
    	let t_value = /*key*/ ctx[32] + "";
    	let t;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t = text(t_value);
    			add_location(li, file$n, 369, 16, 14964);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*remainingKeys*/ 2 && t_value !== (t_value = /*key*/ ctx[32] + "")) set_data_dev(t, t_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$h.name,
    		type: "each",
    		source: "(369:16) {#each remainingKeys as key}",
    		ctx
    	});

    	return block;
    }

    // (408:8) {#if Object.keys(mergedJson).length > 0}
    function create_if_block$c(ctx) {
    	let div;
    	let h3;
    	let t1;
    	let pre;
    	let t2_value = JSON.stringify(/*mergedJson*/ ctx[3], null, 2) + "";
    	let t2;
    	let t3;
    	let br;
    	let t4;
    	let button0;
    	let t6;
    	let button1;
    	let mounted;
    	let dispose;

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			h3 = element$1("h3");
    			h3.textContent = "Merged JSON:";
    			t1 = space();
    			pre = element$1("pre");
    			t2 = text(t2_value);
    			t3 = text("\r\n        placeholder for image input for background - optional\r\n        ");
    			br = element$1("br");
    			t4 = space();
    			button0 = element$1("button");
    			button0.textContent = "Download Configuration";
    			t6 = space();
    			button1 = element$1("button");
    			button1.textContent = "Test load for the auto gen config";
    			add_location(h3, file$n, 409, 12, 16361);
    			add_location(pre, file$n, 410, 12, 16396);
    			add_location(div, file$n, 408, 8, 16342);
    			add_location(br, file$n, 413, 8, 16533);
    			add_location(button0, file$n, 414, 8, 16547);
    			add_location(button1, file$n, 415, 8, 16636);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, h3);
    			append_dev(div, t1);
    			append_dev(div, pre);
    			append_dev(pre, t2);
    			insert_dev(target, t3, anchor);
    			insert_dev(target, br, anchor);
    			insert_dev(target, t4, anchor);
    			insert_dev(target, button0, anchor);
    			insert_dev(target, t6, anchor);
    			insert_dev(target, button1, anchor);

    			if (!mounted) {
    				dispose = [
    					listen_dev(button0, "click", /*downloadAutogenConfiguration*/ ctx[12], false, false, false, false),
    					listen_dev(button1, "click", /*loadexperimentalthemedispatch*/ ctx[7], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*mergedJson*/ 8 && t2_value !== (t2_value = JSON.stringify(/*mergedJson*/ ctx[3], null, 2) + "")) set_data_dev(t2, t2_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			if (detaching) detach_dev(t3);
    			if (detaching) detach_dev(br);
    			if (detaching) detach_dev(t4);
    			if (detaching) detach_dev(button0);
    			if (detaching) detach_dev(t6);
    			if (detaching) detach_dev(button1);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$c.name,
    		type: "if",
    		source: "(408:8) {#if Object.keys(mergedJson).length > 0}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$n(ctx) {
    	let div5;
    	let h1;
    	let t1;
    	let h20;
    	let t3;
    	let div4;
    	let div0;
    	let pre;
    	let t7;
    	let div3;
    	let div1;
    	let h21;
    	let t9;
    	let ul0;
    	let t10;
    	let div2;
    	let h22;
    	let t12;
    	let ul1;
    	let t13;
    	let div7;
    	let div6;
    	let hr0;
    	let t14;
    	let h3;
    	let t16;
    	let button0;
    	let t18;
    	let button1;
    	let t20;
    	let button2;
    	let t22;
    	let button3;
    	let t24;
    	let simpleiframe;
    	let t25;
    	let hr1;
    	let t26;
    	let textarea;
    	let t27;
    	let button4;
    	let t29;
    	let show_if = Object.keys(/*mergedJson*/ ctx[3]).length > 0;
    	let t30;
    	let hr2;
    	let t31;
    	let br0;
    	let t32;
    	let br1;
    	let t33;
    	let br2;
    	let current;
    	let mounted;
    	let dispose;
    	let each_value_1 = /*filteredKeys*/ ctx[0];
    	validate_each_argument(each_value_1);
    	let each_blocks_1 = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks_1[i] = create_each_block_1$a(get_each_context_1$a(ctx, each_value_1, i));
    	}

    	let each_value = /*remainingKeys*/ ctx[1];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$h(get_each_context$h(ctx, each_value, i));
    	}

    	simpleiframe = new SimpleIFrame({
    			props: { webpages: /*LLMforassit*/ ctx[6] },
    			$$inline: true
    		});

    	let if_block = show_if && create_if_block$c(ctx);

    	const block = {
    		c: function create() {
    			div5 = element$1("div");
    			h1 = element$1("h1");
    			h1.textContent = "Streamlined Config Creator Randomiser has been forced to max 2 story parts and 2 targets each to test load";
    			t1 = space();
    			h20 = element$1("h2");
    			h20.textContent = "User should be able to control the length in respect to llm used and should be able prompt the llm in chunks";
    			t3 = space();
    			div4 = element$1("div");
    			div0 = element$1("div");
    			pre = element$1("pre");

    			pre.textContent = `              ${JSON.stringify(/*randomContentStructureSubtargets*/ ctx[4], null, 2)}
            `;

    			t7 = space();
    			div3 = element$1("div");
    			div1 = element$1("div");
    			h21 = element$1("h2");
    			h21.textContent = "Filtered Keys:";
    			t9 = space();
    			ul0 = element$1("ul");

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				each_blocks_1[i].c();
    			}

    			t10 = space();
    			div2 = element$1("div");
    			h22 = element$1("h2");
    			h22.textContent = "Remaining Keys:";
    			t12 = space();
    			ul1 = element$1("ul");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t13 = space();
    			div7 = element$1("div");
    			div6 = element$1("div");
    			hr0 = element$1("hr");
    			t14 = space();
    			h3 = element$1("h3");
    			h3.textContent = "Snippet JSON (Get from LLM APIs or interfaces), Use the following prompt from the below :";
    			t16 = space();
    			button0 = element$1("button");
    			button0.textContent = "Copy System Prompt";
    			t18 = space();
    			button1 = element$1("button");
    			button1.textContent = "Copy User Prompt";
    			t20 = text("\r\n        ||| ");
    			button2 = element$1("button");
    			button2.textContent = "Copy Obstacle Prompt";
    			t22 = space();
    			button3 = element$1("button");
    			button3.textContent = "Copy Resolution Prompt";
    			t24 = text("\r\n        LLM: ");
    			create_component(simpleiframe.$$.fragment);
    			t25 = space();
    			hr1 = element$1("hr");
    			t26 = text("\r\n\r\n        LLM Response to be pasted below\r\n        ");
    			textarea = element$1("textarea");
    			t27 = space();
    			button4 = element$1("button");
    			button4.textContent = "Merge JSON";
    			t29 = space();
    			if (if_block) if_block.c();
    			t30 = space();
    			hr2 = element$1("hr");
    			t31 = text("\r\n\r\n    Major Issues now are how are how to incorporate non alert types OR just assume this is the manual part i.e. filling in the blanks the autogen doesnt manage AND ");
    			br0 = element$1("br");
    			t32 = text("\r\n    Long Structures? ");
    			br1 = element$1("br");
    			t33 = text("\r\n    How to use the sequence planner in the same workflow? AND ");
    			br2 = element$1("br");
    			add_location(h1, file$n, 344, 4, 13975);
    			add_location(h20, file$n, 345, 4, 14096);
    			add_location(pre, file$n, 350, 12, 14445);
    			attr_dev(div0, "class", "input-column svelte-1ynthow");
    			add_location(div0, file$n, 348, 8, 14263);
    			add_location(h21, file$n, 357, 12, 14637);
    			add_location(ul0, file$n, 358, 12, 14674);
    			add_location(div1, file$n, 356, 12, 14618);
    			add_location(h22, file$n, 366, 12, 14858);
    			add_location(ul1, file$n, 367, 12, 14896);
    			add_location(div2, file$n, 365, 12, 14839);
    			attr_dev(div3, "class", "output-column svelte-1ynthow");
    			add_location(div3, file$n, 355, 8, 14577);
    			attr_dev(div4, "class", "ContainerColumns svelte-1ynthow");
    			add_location(div4, file$n, 346, 4, 14219);
    			add_location(div5, file$n, 342, 0, 13962);
    			add_location(hr0, file$n, 391, 8, 15470);
    			add_location(h3, file$n, 392, 8, 15484);
    			add_location(button0, file$n, 393, 8, 15592);
    			add_location(button1, file$n, 394, 8, 15691);
    			add_location(button2, file$n, 395, 12, 15790);
    			add_location(button3, file$n, 396, 8, 15893);
    			add_location(hr1, file$n, 399, 8, 16056);
    			attr_dev(textarea, "class", "svelte-1ynthow");
    			add_location(textarea, file$n, 402, 8, 16113);
    			add_location(div6, file$n, 378, 8, 15109);
    			add_location(button4, file$n, 405, 8, 16226);
    			add_location(div7, file$n, 377, 4, 15094);
    			add_location(hr2, file$n, 419, 4, 16762);
    			add_location(br0, file$n, 421, 164, 16934);
    			add_location(br1, file$n, 422, 21, 16961);
    			add_location(br2, file$n, 423, 62, 17029);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div5, anchor);
    			append_dev(div5, h1);
    			append_dev(div5, t1);
    			append_dev(div5, h20);
    			append_dev(div5, t3);
    			append_dev(div5, div4);
    			append_dev(div4, div0);
    			append_dev(div0, pre);
    			append_dev(div4, t7);
    			append_dev(div4, div3);
    			append_dev(div3, div1);
    			append_dev(div1, h21);
    			append_dev(div1, t9);
    			append_dev(div1, ul0);

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				if (each_blocks_1[i]) {
    					each_blocks_1[i].m(ul0, null);
    				}
    			}

    			append_dev(div3, t10);
    			append_dev(div3, div2);
    			append_dev(div2, h22);
    			append_dev(div2, t12);
    			append_dev(div2, ul1);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(ul1, null);
    				}
    			}

    			insert_dev(target, t13, anchor);
    			insert_dev(target, div7, anchor);
    			append_dev(div7, div6);
    			append_dev(div6, hr0);
    			append_dev(div6, t14);
    			append_dev(div6, h3);
    			append_dev(div6, t16);
    			append_dev(div6, button0);
    			append_dev(div6, t18);
    			append_dev(div6, button1);
    			append_dev(div6, t20);
    			append_dev(div6, button2);
    			append_dev(div6, t22);
    			append_dev(div6, button3);
    			append_dev(div6, t24);
    			mount_component(simpleiframe, div6, null);
    			append_dev(div6, t25);
    			append_dev(div6, hr1);
    			append_dev(div6, t26);
    			append_dev(div6, textarea);
    			set_input_value(textarea, /*snippetJsonInput*/ ctx[2]);
    			append_dev(div7, t27);
    			append_dev(div7, button4);
    			append_dev(div7, t29);
    			if (if_block) if_block.m(div7, null);
    			insert_dev(target, t30, anchor);
    			insert_dev(target, hr2, anchor);
    			insert_dev(target, t31, anchor);
    			insert_dev(target, br0, anchor);
    			insert_dev(target, t32, anchor);
    			insert_dev(target, br1, anchor);
    			insert_dev(target, t33, anchor);
    			insert_dev(target, br2, anchor);
    			current = true;

    			if (!mounted) {
    				dispose = [
    					listen_dev(button0, "click", /*click_handler*/ ctx[13], false, false, false, false),
    					listen_dev(button1, "click", /*click_handler_1*/ ctx[14], false, false, false, false),
    					listen_dev(button2, "click", /*click_handler_2*/ ctx[15], false, false, false, false),
    					listen_dev(button3, "click", /*click_handler_3*/ ctx[16], false, false, false, false),
    					listen_dev(textarea, "input", /*textarea_input_handler*/ ctx[17]),
    					listen_dev(textarea, "input", autoExpandTextarea, false, false, false, false),
    					listen_dev(button4, "click", /*handleMerge*/ ctx[5], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*filteredKeys*/ 1) {
    				each_value_1 = /*filteredKeys*/ ctx[0];
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$a(ctx, each_value_1, i);

    					if (each_blocks_1[i]) {
    						each_blocks_1[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_1[i] = create_each_block_1$a(child_ctx);
    						each_blocks_1[i].c();
    						each_blocks_1[i].m(ul0, null);
    					}
    				}

    				for (; i < each_blocks_1.length; i += 1) {
    					each_blocks_1[i].d(1);
    				}

    				each_blocks_1.length = each_value_1.length;
    			}

    			if (dirty[0] & /*remainingKeys*/ 2) {
    				each_value = /*remainingKeys*/ ctx[1];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$h(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$h(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(ul1, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}

    			if (dirty[0] & /*snippetJsonInput*/ 4) {
    				set_input_value(textarea, /*snippetJsonInput*/ ctx[2]);
    			}

    			if (dirty[0] & /*mergedJson*/ 8) show_if = Object.keys(/*mergedJson*/ ctx[3]).length > 0;

    			if (show_if) {
    				if (if_block) {
    					if_block.p(ctx, dirty);
    				} else {
    					if_block = create_if_block$c(ctx);
    					if_block.c();
    					if_block.m(div7, null);
    				}
    			} else if (if_block) {
    				if_block.d(1);
    				if_block = null;
    			}
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(simpleiframe.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(simpleiframe.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div5);
    			destroy_each(each_blocks_1, detaching);
    			destroy_each(each_blocks, detaching);
    			if (detaching) detach_dev(t13);
    			if (detaching) detach_dev(div7);
    			destroy_component(simpleiframe);
    			if (if_block) if_block.d();
    			if (detaching) detach_dev(t30);
    			if (detaching) detach_dev(hr2);
    			if (detaching) detach_dev(t31);
    			if (detaching) detach_dev(br0);
    			if (detaching) detach_dev(t32);
    			if (detaching) detach_dev(br1);
    			if (detaching) detach_dev(t33);
    			if (detaching) detach_dev(br2);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$n.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function generateRandomContentStructureSubtargets() {
    	// Random number generator for various properties
    	function getRandomNumber(max, min = 1) {
    		return Math.floor(Math.random() * (max - min + 1)) + min;
    	}

    	// Recursive function to generate targets and optionally subtargets
    	function generateTargets(level = 0) {
    		const numberOfTargets = getRandomNumber(2); // Generate up to 4 targets -------------------- simplified for test

    		const targets = Array.from({ length: numberOfTargets }, (_, idx) => {
    			const target = {
    				name: `Target${level}_${idx + 1}`,
    				x: getRandomNumber(700),
    				y: getRandomNumber(700),
    				collisionType: 'alert',
    				collisiontext: `Placeholder text for Target ${level}.${idx + 1}`
    			};

    			// Randomly decide if this target should have subtargets, less likely as level increases
    			if (Math.random() < 0.5 - level * 0.1) {
    				target.subTargets = generateTargets(level + 1);
    			}

    			return target;
    		});

    		return targets;
    	}

    	// Generate the random story structure with nested targets
    	const randomStoryPartsLength = getRandomNumber(2); // Generate random number of story parts (1-5) -------------------------------------simplified for tests

    	const randomStoryStructure = Array.from({ length: randomStoryPartsLength }, (_, index) => ({
    		part: index,
    		objectives: Array.from({ length: getRandomNumber(3) }, (_, idx) => ({
    			id: `Objective${index + 1}_${idx + 1}`,
    			name: `Objective ${index + 1}.${idx + 1}`,
    			complete: false
    		})),
    		targets: generateTargets()
    	}));

    	// Compile the full random content structure
    	const randomContentStructure = { story: randomStoryStructure };

    	return randomContentStructure;
    }

    function getKeysFromJSON(json, filter) {
    	const filteredKeys = [];
    	const remainingKeys = [];

    	function traverseObject(obj, parentKey = '') {
    		for (const key in obj) {
    			if (obj.hasOwnProperty(key)) {
    				const fullKey = parentKey ? `${parentKey}.${key}` : key;

    				if (typeof filter === 'function' && filter(fullKey)) {
    					filteredKeys.push(fullKey);
    				} else {
    					remainingKeys.push(fullKey);
    				}

    				if (typeof obj[key] === 'object' && obj[key] !== null) {
    					traverseObject(obj[key], fullKey);
    				}
    			}
    		}
    	}

    	traverseObject(json);
    	return { filteredKeys, remainingKeys };
    }

    function autoExpandTextarea(event) {
    	const textarea = event.target;
    	textarea.style.height = 'auto';
    	textarea.style.height = `${textarea.scrollHeight}px`;
    }

    async function copyText(textToCopy) {
    	try {
    		await navigator.clipboard.writeText(textToCopy);
    		console.log('Text copied to clipboard');
    	} catch(error) {
    		console.error('Failed to copy text: ', err);
    	}
    }

    function instance$n($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('CustomGameConfigHelper', slots, []);
    	let randomContentStructureSubtargets = generateRandomContentStructureSubtargets();
    	console.log(randomContentStructureSubtargets);

    	function copyToClipboardStructuresubtargets() {
    		navigator.clipboard.writeText(JSON.stringify(randomContentStructureSubtargets, null, 2)).then(() => {
    			alert('Random content Structure copied to clipboard!');
    		}).catch(error => {
    			console.error('Failed to copy to clipboard:', error);
    			alert('Error, Random content Structure failed to copy due to error!');
    		});
    	}

    	//Filter -----------------------------------------------------------------------------------------------------
    	let jsonInput = '';

    	let json = {};
    	let filteredKeys = [];
    	let remainingKeys = [];
    	let llmresponseformat = '{"story" : [{},{},... ]';

    	function extractKeys() {
    		try {
    			//json = JSON.parse(jsonInput);
    			json = randomContentStructureSubtargets;

    			const { filteredKeys: filtered, remainingKeys: remaining } = getKeysFromJSON(json, key => {
    				return key.includes('name') || key.includes('collisiontext'); //|| modal fields;
    			}); //return key.endsWith('.x') || key.endsWith('.y') || key.includes('Type') || key.includes('complete');

    			$$invalidate(0, filteredKeys = filtered);
    			$$invalidate(1, remainingKeys = remaining);
    		} catch(error) {
    			console.error('Invalid JSON:', error);
    			$$invalidate(0, filteredKeys = []);
    			$$invalidate(1, remainingKeys = []);
    		}
    	}

    	extractKeys();

    	//Merge ------------------------------------------------------------------------------------------------------
    	let randomContentStructureSubtargetsstring = JSON.stringify(randomContentStructureSubtargets, null, 2);

    	let originalJson = randomContentStructureSubtargets;
    	let snippetJson = {};
    	let snippetJsonInput = '';
    	let mergedJson = {};

    	// function mergeJSON(original, snippet) {
    	//   const merged = JSON.parse(JSON.stringify(original));
    	//   // Update objectives
    	//   if (Array.isArray(snippet.story.objectives)) {
    	//     merged.story[0].objectives.forEach((obj, index) => {
    	//       if (snippet.story.objectives[index]) {
    	//         obj.name = snippet.story.objectives[index].name;
    	//       }
    	//     });
    	//   }
    	//   // Update targets
    	//   if (Array.isArray(snippet.story.targets)) {
    	//     merged.story[0].targets.forEach((target, index) => {
    	//       if (snippet.story.targets[index]) {
    	//         target.name = snippet.story.targets[index].name;
    	//         target.collisiontext = snippet.story.targets[index].collisiontext;
    	//         // Update subTargets recursively
    	//         function updateSubTargets(originalSubTargets, snippetSubTargets) {
    	//           originalSubTargets.forEach((subTarget, subIndex) => {
    	//             if (snippetSubTargets[subIndex]) {
    	//               subTarget.name = snippetSubTargets[subIndex].name;
    	//               subTarget.collisiontext = snippetSubTargets[subIndex].collisiontext;
    	//               if (Array.isArray(snippetSubTargets[subIndex].subTargets)) {
    	//                 updateSubTargets(subTarget.subTargets, snippetSubTargets[subIndex].subTargets);
    	//               }
    	//             }
    	//           });
    	//         }
    	//         if (Array.isArray(target.subTargets) && Array.isArray(snippet.story.targets[index].subTargets)) {
    	//           updateSubTargets(target.subTargets, snippet.story.targets[index].subTargets);
    	//         }
    	//       }
    	//     });
    	//   }
    	//     autogenconfigtest.update(currentData => {
    	//     const updatedData = { ...currentData, ...merged };
    	//     return updatedData;
    	// });
    	//     return merged;
    	// }
    	// function mergeJSON(original, snippet) {
    	//     const merged = JSON.parse(JSON.stringify(original));
    	//     // Update objectives
    	//     if (Array.isArray(snippet.story[0].objectives)) {
    	//         merged.story[0].objectives.forEach((obj, index) => {
    	//         if (snippet.story[0].objectives[index]) {
    	//             obj.name = snippet.story[0].objectives[index].name;
    	//         }
    	//         });
    	//     }
    	//     // Update targets
    	//     if (Array.isArray(snippet.story[0].targets)) {
    	//         merged.story[0].targets.forEach((target, index) => {
    	//         if (snippet.story[0].targets[index]) {
    	//             target.name = snippet.story[0].targets[index].name;
    	//             target.collisiontext = snippet.story[0].targets[index].collisiontext;
    	//         }
    	//         });
    	//     }
    	//     autogenconfigtest.update(currentData => {
    	//         const updatedData = { ...currentData, ...merged };
    	//         return updatedData;
    	//     });
    	//     return merged;
    	// }
    	function mergeJSON(original, snippet) {
    		const merged = JSON.parse(JSON.stringify(original));

    		// Update story parts
    		snippet.story.forEach((part, partIndex) => {
    			if (merged.story[partIndex]) {
    				// Update objectives
    				if (Array.isArray(part.objectives)) {
    					part.objectives.forEach((obj, objIndex) => {
    						if (merged.story[partIndex].objectives[objIndex]) {
    							merged.story[partIndex].objectives[objIndex].name = obj.name;
    						}
    					});
    				}

    				// Update targets
    				if (Array.isArray(part.targets)) {
    					part.targets.forEach((target, targetIndex) => {
    						if (merged.story[partIndex].targets[targetIndex]) {
    							merged.story[partIndex].targets[targetIndex].name = target.name;
    							merged.story[partIndex].targets[targetIndex].collisiontext = target.collisiontext;

    							// Update subtargets recursively
    							function updateSubTargets(originalSubTargets, snippetSubTargets) {
    								snippetSubTargets.forEach((subTarget, subIndex) => {
    									if (originalSubTargets[subIndex]) {
    										originalSubTargets[subIndex].name = subTarget.name;
    										originalSubTargets[subIndex].collisiontext = subTarget.collisiontext;

    										if (Array.isArray(subTarget.subTargets)) {
    											updateSubTargets(originalSubTargets[subIndex].subTargets, subTarget.subTargets);
    										}
    									}
    								});
    							}

    							if (Array.isArray(target.subTargets)) {
    								updateSubTargets(merged.story[partIndex].targets[targetIndex].subTargets, target.subTargets);
    							}
    						}
    					});
    				}
    			}
    		});

    		//console.log(merged);
    		autogenconfigtest.update(currentData => {
    			const updatedData = { ...currentData, ...merged };

    			//console.log(updatedData);
    			return updatedData;
    		});

    		return merged;
    	}

    	function handleMerge() {
    		try {
    			//originalJson = JSON.parse(originalJsonInput);
    			snippetJson = JSON.parse(snippetJsonInput);

    			//console.log(snippetJson)
    			$$invalidate(3, mergedJson = mergeJSON(originalJson, snippetJson));
    		} catch(error) {
    			console.error('Invalid JSON:', error);
    			$$invalidate(3, mergedJson = {});
    		}
    	}

    	//Live Asset Generation 
    	let LLMforassit = [
    		{
    			name: 'Qwen/Qwen1.5-110B-Chat-demo',
    			url: 'https://qwen-qwen1-5-110b-chat-demo.hf.space'
    		}
    	]; //List of models with system prompt available

    	//Load Function
    	const dispatch = createEventDispatcher();

    	function loadexperimentalthemedispatch() {
    		dispatch('loadexperimentaltheme'); //doesnt work right probably as function is in game component which is not the top level parent
    	}

    	//Generate sequence guidance 
    	let predefinedsequenceList = [
    		'exploreLocation',
    		'discoverClue',
    		'meetCharacter',
    		'solveRiddle',
    		'findItem',
    		'faceChallenge',
    		'makeDecision',
    		'engageBattle',
    		'unlockAbility',
    		'learnSecret',
    		'completeMission',
    		'experienceSetback',
    		'earnReward',
    		'uncoverMystery',
    		'formAlliance',
    		'faceBetrayal',
    		'confrontNemesis',
    		'makeDiscovery',
    		'overcomeLoss',
    		'achieveVictory'
    	];

    	let suggestedplayerSequence = [];

    	function generatesimpleSequence(maxitems) {
    		//The complex ones are handled the brainstorm component
    		const sequence = [];

    		for (let i = 0; i < maxitems; i++) {
    			const randomIndex = Math.floor(Math.random() * predefinedsequenceList.length);
    			sequence.push(predefinedsequenceList[randomIndex]);
    		}

    		suggestedplayerSequence = [...sequence];
    	}

    	let amountofcollisiontext = filteredKeys.filter(s => s.includes("collisiontext")).length;
    	generatesimpleSequence(amountofcollisiontext);
    	let CopyGameAssistSystemPrompt = 'Use the fields given to you to create a JSON object to fulfill the request of creating a story in JSON form - Its a story that will be interactive. The format is {"story" : [{},{},... ]. If possible follow the sequence suggested';
    	let CopyGameAssistUserPrompt = `Use the following fields to write a pirate story -\nsuggested sequence - ${suggestedplayerSequence.join(', ')}  \n\n${filteredKeys}`;
    	let CopyGameAssistObstaclePrompt = 'Lets next come up with obstables to the objectives';
    	let CopyGameAssistResolutionPrompt = 'Lets next come up with resolutions to the obstables to the objectives';

    	//Save CustomJSON
    	function downloadAutogenConfiguration() {
    		const currentDate = new Date();
    		const timestamp = currentDate.toISOString().replace(/:/g, '_');
    		const fileName = `gameConfig_${timestamp}.json`;
    		const blob = new Blob([JSON.stringify(mergedJson, null, 2)], { type: 'application/json' });
    		const href = URL.createObjectURL(blob);
    		const link = document.createElement('a');
    		link.href = href;
    		link.download = fileName;
    		document.body.appendChild(link);
    		link.click();
    		document.body.removeChild(link);
    	}

    	const writable_props = [];

    	Object_1$5.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$a.warn(`<CustomGameConfigHelper> was created with unknown prop '${key}'`);
    	});

    	const click_handler = () => copyText(CopyGameAssistSystemPrompt);
    	const click_handler_1 = () => copyText(CopyGameAssistUserPrompt);
    	const click_handler_2 = () => copyText(CopyGameAssistObstaclePrompt);
    	const click_handler_3 = () => copyText(CopyGameAssistResolutionPrompt);

    	function textarea_input_handler() {
    		snippetJsonInput = this.value;
    		$$invalidate(2, snippetJsonInput);
    	}

    	$$self.$capture_state = () => ({
    		autogenconfigtest,
    		SimpleIFrame,
    		createEventDispatcher,
    		generateRandomContentStructureSubtargets,
    		randomContentStructureSubtargets,
    		copyToClipboardStructuresubtargets,
    		jsonInput,
    		json,
    		filteredKeys,
    		remainingKeys,
    		llmresponseformat,
    		getKeysFromJSON,
    		extractKeys,
    		autoExpandTextarea,
    		randomContentStructureSubtargetsstring,
    		originalJson,
    		snippetJson,
    		snippetJsonInput,
    		mergedJson,
    		mergeJSON,
    		handleMerge,
    		LLMforassit,
    		dispatch,
    		loadexperimentalthemedispatch,
    		predefinedsequenceList,
    		suggestedplayerSequence,
    		generatesimpleSequence,
    		amountofcollisiontext,
    		CopyGameAssistSystemPrompt,
    		CopyGameAssistUserPrompt,
    		CopyGameAssistObstaclePrompt,
    		CopyGameAssistResolutionPrompt,
    		copyText,
    		downloadAutogenConfiguration
    	});

    	$$self.$inject_state = $$props => {
    		if ('randomContentStructureSubtargets' in $$props) $$invalidate(4, randomContentStructureSubtargets = $$props.randomContentStructureSubtargets);
    		if ('jsonInput' in $$props) jsonInput = $$props.jsonInput;
    		if ('json' in $$props) json = $$props.json;
    		if ('filteredKeys' in $$props) $$invalidate(0, filteredKeys = $$props.filteredKeys);
    		if ('remainingKeys' in $$props) $$invalidate(1, remainingKeys = $$props.remainingKeys);
    		if ('llmresponseformat' in $$props) llmresponseformat = $$props.llmresponseformat;
    		if ('randomContentStructureSubtargetsstring' in $$props) randomContentStructureSubtargetsstring = $$props.randomContentStructureSubtargetsstring;
    		if ('originalJson' in $$props) originalJson = $$props.originalJson;
    		if ('snippetJson' in $$props) snippetJson = $$props.snippetJson;
    		if ('snippetJsonInput' in $$props) $$invalidate(2, snippetJsonInput = $$props.snippetJsonInput);
    		if ('mergedJson' in $$props) $$invalidate(3, mergedJson = $$props.mergedJson);
    		if ('LLMforassit' in $$props) $$invalidate(6, LLMforassit = $$props.LLMforassit);
    		if ('predefinedsequenceList' in $$props) predefinedsequenceList = $$props.predefinedsequenceList;
    		if ('suggestedplayerSequence' in $$props) suggestedplayerSequence = $$props.suggestedplayerSequence;
    		if ('amountofcollisiontext' in $$props) amountofcollisiontext = $$props.amountofcollisiontext;
    		if ('CopyGameAssistSystemPrompt' in $$props) $$invalidate(8, CopyGameAssistSystemPrompt = $$props.CopyGameAssistSystemPrompt);
    		if ('CopyGameAssistUserPrompt' in $$props) $$invalidate(9, CopyGameAssistUserPrompt = $$props.CopyGameAssistUserPrompt);
    		if ('CopyGameAssistObstaclePrompt' in $$props) $$invalidate(10, CopyGameAssistObstaclePrompt = $$props.CopyGameAssistObstaclePrompt);
    		if ('CopyGameAssistResolutionPrompt' in $$props) $$invalidate(11, CopyGameAssistResolutionPrompt = $$props.CopyGameAssistResolutionPrompt);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		filteredKeys,
    		remainingKeys,
    		snippetJsonInput,
    		mergedJson,
    		randomContentStructureSubtargets,
    		handleMerge,
    		LLMforassit,
    		loadexperimentalthemedispatch,
    		CopyGameAssistSystemPrompt,
    		CopyGameAssistUserPrompt,
    		CopyGameAssistObstaclePrompt,
    		CopyGameAssistResolutionPrompt,
    		downloadAutogenConfiguration,
    		click_handler,
    		click_handler_1,
    		click_handler_2,
    		click_handler_3,
    		textarea_input_handler
    	];
    }

    class CustomGameConfigHelper extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$n, create_fragment$n, safe_not_equal, {}, null, [-1, -1]);

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "CustomGameConfigHelper",
    			options,
    			id: create_fragment$n.name
    		});
    	}
    }

    /**
     * Copyright (c) 2016-2024, The Cytoscape Consortium.
     *
     * Permission is hereby granted, free of charge, to any person obtaining a copy of
     * this software and associated documentation files (the “Software”), to deal in
     * the Software without restriction, including without limitation the rights to
     * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
     * of the Software, and to permit persons to whom the Software is furnished to do
     * so, subject to the following conditions:
     *
     * The above copyright notice and this permission notice shall be included in all
     * copies or substantial portions of the Software.
     *
     * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     * SOFTWARE.
     */

    function _typeof(obj) {
      "@babel/helpers - typeof";

      return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) {
        return typeof obj;
      } : function (obj) {
        return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
      }, _typeof(obj);
    }
    function _classCallCheck(instance, Constructor) {
      if (!(instance instanceof Constructor)) {
        throw new TypeError("Cannot call a class as a function");
      }
    }
    function _defineProperties(target, props) {
      for (var i = 0; i < props.length; i++) {
        var descriptor = props[i];
        descriptor.enumerable = descriptor.enumerable || false;
        descriptor.configurable = true;
        if ("value" in descriptor) descriptor.writable = true;
        Object.defineProperty(target, descriptor.key, descriptor);
      }
    }
    function _createClass(Constructor, protoProps, staticProps) {
      if (protoProps) _defineProperties(Constructor.prototype, protoProps);
      if (staticProps) _defineProperties(Constructor, staticProps);
      Object.defineProperty(Constructor, "prototype", {
        writable: false
      });
      return Constructor;
    }
    function _defineProperty$1(obj, key, value) {
      if (key in obj) {
        Object.defineProperty(obj, key, {
          value: value,
          enumerable: true,
          configurable: true,
          writable: true
        });
      } else {
        obj[key] = value;
      }
      return obj;
    }
    function _slicedToArray(arr, i) {
      return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
    }
    function _arrayWithHoles(arr) {
      if (Array.isArray(arr)) return arr;
    }
    function _iterableToArrayLimit(arr, i) {
      var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"];
      if (_i == null) return;
      var _arr = [];
      var _n = true;
      var _d = false;
      var _s, _e;
      try {
        for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) {
          _arr.push(_s.value);
          if (i && _arr.length === i) break;
        }
      } catch (err) {
        _d = true;
        _e = err;
      } finally {
        try {
          if (!_n && _i["return"] != null) _i["return"]();
        } finally {
          if (_d) throw _e;
        }
      }
      return _arr;
    }
    function _unsupportedIterableToArray(o, minLen) {
      if (!o) return;
      if (typeof o === "string") return _arrayLikeToArray(o, minLen);
      var n = Object.prototype.toString.call(o).slice(8, -1);
      if (n === "Object" && o.constructor) n = o.constructor.name;
      if (n === "Map" || n === "Set") return Array.from(o);
      if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
    }
    function _arrayLikeToArray(arr, len) {
      if (len == null || len > arr.length) len = arr.length;
      for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
      return arr2;
    }
    function _nonIterableRest() {
      throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
    }
    function _createForOfIteratorHelper(o, allowArrayLike) {
      var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
      if (!it) {
        if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
          if (it) o = it;
          var i = 0;
          var F = function () {};
          return {
            s: F,
            n: function () {
              if (i >= o.length) return {
                done: true
              };
              return {
                done: false,
                value: o[i++]
              };
            },
            e: function (e) {
              throw e;
            },
            f: F
          };
        }
        throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
      }
      var normalCompletion = true,
        didErr = false,
        err;
      return {
        s: function () {
          it = it.call(o);
        },
        n: function () {
          var step = it.next();
          normalCompletion = step.done;
          return step;
        },
        e: function (e) {
          didErr = true;
          err = e;
        },
        f: function () {
          try {
            if (!normalCompletion && it.return != null) it.return();
          } finally {
            if (didErr) throw err;
          }
        }
      };
    }

    var _window = typeof window === 'undefined' ? null : window; // eslint-disable-line no-undef

    var navigator$1 = _window ? _window.navigator : null;
    _window ? _window.document : null;
    var typeofstr = _typeof('');
    var typeofobj = _typeof({});
    var typeoffn = _typeof(function () {});
    var typeofhtmlele = typeof HTMLElement === "undefined" ? "undefined" : _typeof(HTMLElement);
    var instanceStr = function instanceStr(obj) {
      return obj && obj.instanceString && fn$6(obj.instanceString) ? obj.instanceString() : null;
    };

    var string = function string(obj) {
      return obj != null && _typeof(obj) == typeofstr;
    };
    var fn$6 = function fn(obj) {
      return obj != null && _typeof(obj) === typeoffn;
    };
    var array = function array(obj) {
      return !elementOrCollection(obj) && (Array.isArray ? Array.isArray(obj) : obj != null && obj instanceof Array);
    };
    var plainObject = function plainObject(obj) {
      return obj != null && _typeof(obj) === typeofobj && !array(obj) && obj.constructor === Object;
    };
    var object = function object(obj) {
      return obj != null && _typeof(obj) === typeofobj;
    };
    var number$1 = function number(obj) {
      return obj != null && _typeof(obj) === _typeof(1) && !isNaN(obj);
    };
    var integer = function integer(obj) {
      return number$1(obj) && Math.floor(obj) === obj;
    };
    var htmlElement = function htmlElement(obj) {
      if ('undefined' === typeofhtmlele) {
        return undefined;
      } else {
        return null != obj && obj instanceof HTMLElement;
      }
    };
    var elementOrCollection = function elementOrCollection(obj) {
      return element(obj) || collection(obj);
    };
    var element = function element(obj) {
      return instanceStr(obj) === 'collection' && obj._private.single;
    };
    var collection = function collection(obj) {
      return instanceStr(obj) === 'collection' && !obj._private.single;
    };
    var core$1 = function core(obj) {
      return instanceStr(obj) === 'core';
    };
    var stylesheet = function stylesheet(obj) {
      return instanceStr(obj) === 'stylesheet';
    };
    var event = function event(obj) {
      return instanceStr(obj) === 'event';
    };
    var emptyString = function emptyString(obj) {
      if (obj === undefined || obj === null) {
        // null is empty
        return true;
      } else if (obj === '' || obj.match(/^\s+$/)) {
        return true; // empty string is empty
      }

      return false; // otherwise, we don't know what we've got
    };
    var domElement = function domElement(obj) {
      if (typeof HTMLElement === 'undefined') {
        return false; // we're not in a browser so it doesn't matter
      } else {
        return obj instanceof HTMLElement;
      }
    };
    var boundingBox = function boundingBox(obj) {
      return plainObject(obj) && number$1(obj.x1) && number$1(obj.x2) && number$1(obj.y1) && number$1(obj.y2);
    };
    var promise = function promise(obj) {
      return object(obj) && fn$6(obj.then);
    };
    var ms = function ms() {
      return navigator$1 && navigator$1.userAgent.match(/msie|trident|edge/i);
    }; // probably a better way to detect this...

    var memoize$1 = function memoize(fn, keyFn) {
      if (!keyFn) {
        keyFn = function keyFn() {
          if (arguments.length === 1) {
            return arguments[0];
          } else if (arguments.length === 0) {
            return 'undefined';
          }
          var args = [];
          for (var i = 0; i < arguments.length; i++) {
            args.push(arguments[i]);
          }
          return args.join('$');
        };
      }
      var memoizedFn = function memoizedFn() {
        var self = this;
        var args = arguments;
        var ret;
        var k = keyFn.apply(self, args);
        var cache = memoizedFn.cache;
        if (!(ret = cache[k])) {
          ret = cache[k] = fn.apply(self, args);
        }
        return ret;
      };
      memoizedFn.cache = {};
      return memoizedFn;
    };

    var camel2dash = memoize$1(function (str) {
      return str.replace(/([A-Z])/g, function (v) {
        return '-' + v.toLowerCase();
      });
    });
    var dash2camel = memoize$1(function (str) {
      return str.replace(/(-\w)/g, function (v) {
        return v[1].toUpperCase();
      });
    });
    var prependCamel = memoize$1(function (prefix, str) {
      return prefix + str[0].toUpperCase() + str.substring(1);
    }, function (prefix, str) {
      return prefix + '$' + str;
    });
    var capitalize = function capitalize(str) {
      if (emptyString(str)) {
        return str;
      }
      return str.charAt(0).toUpperCase() + str.substring(1);
    };

    var number = '(?:[-+]?(?:(?:\\d+|\\d*\\.\\d+)(?:[Ee][+-]?\\d+)?))';
    var rgba = 'rgb[a]?\\((' + number + '[%]?)\\s*,\\s*(' + number + '[%]?)\\s*,\\s*(' + number + '[%]?)(?:\\s*,\\s*(' + number + '))?\\)';
    var rgbaNoBackRefs = 'rgb[a]?\\((?:' + number + '[%]?)\\s*,\\s*(?:' + number + '[%]?)\\s*,\\s*(?:' + number + '[%]?)(?:\\s*,\\s*(?:' + number + '))?\\)';
    var hsla = 'hsl[a]?\\((' + number + ')\\s*,\\s*(' + number + '[%])\\s*,\\s*(' + number + '[%])(?:\\s*,\\s*(' + number + '))?\\)';
    var hslaNoBackRefs = 'hsl[a]?\\((?:' + number + ')\\s*,\\s*(?:' + number + '[%])\\s*,\\s*(?:' + number + '[%])(?:\\s*,\\s*(?:' + number + '))?\\)';
    var hex3 = '\\#[0-9a-fA-F]{3}';
    var hex6 = '\\#[0-9a-fA-F]{6}';

    var ascending = function ascending(a, b) {
      if (a < b) {
        return -1;
      } else if (a > b) {
        return 1;
      } else {
        return 0;
      }
    };
    var descending = function descending(a, b) {
      return -1 * ascending(a, b);
    };

    var extend$1 = Object.assign != null ? Object.assign.bind(Object) : function (tgt) {
      var args = arguments;
      for (var i = 1; i < args.length; i++) {
        var obj = args[i];
        if (obj == null) {
          continue;
        }
        var keys = Object.keys(obj);
        for (var j = 0; j < keys.length; j++) {
          var k = keys[j];
          tgt[k] = obj[k];
        }
      }
      return tgt;
    };

    // get [r, g, b] from #abc or #aabbcc
    var hex2tuple = function hex2tuple(hex) {
      if (!(hex.length === 4 || hex.length === 7) || hex[0] !== '#') {
        return;
      }
      var shortHex = hex.length === 4;
      var r, g, b;
      var base = 16;
      if (shortHex) {
        r = parseInt(hex[1] + hex[1], base);
        g = parseInt(hex[2] + hex[2], base);
        b = parseInt(hex[3] + hex[3], base);
      } else {
        r = parseInt(hex[1] + hex[2], base);
        g = parseInt(hex[3] + hex[4], base);
        b = parseInt(hex[5] + hex[6], base);
      }
      return [r, g, b];
    };

    // get [r, g, b, a] from hsl(0, 0, 0) or hsla(0, 0, 0, 0)
    var hsl2tuple = function hsl2tuple(hsl) {
      var ret;
      var h, s, l, a, r, g, b;
      function hue2rgb(p, q, t) {
        if (t < 0) t += 1;
        if (t > 1) t -= 1;
        if (t < 1 / 6) return p + (q - p) * 6 * t;
        if (t < 1 / 2) return q;
        if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
        return p;
      }
      var m = new RegExp('^' + hsla + '$').exec(hsl);
      if (m) {
        // get hue
        h = parseInt(m[1]);
        if (h < 0) {
          h = (360 - -1 * h % 360) % 360;
        } else if (h > 360) {
          h = h % 360;
        }
        h /= 360; // normalise on [0, 1]

        s = parseFloat(m[2]);
        if (s < 0 || s > 100) {
          return;
        } // saturation is [0, 100]
        s = s / 100; // normalise on [0, 1]

        l = parseFloat(m[3]);
        if (l < 0 || l > 100) {
          return;
        } // lightness is [0, 100]
        l = l / 100; // normalise on [0, 1]

        a = m[4];
        if (a !== undefined) {
          a = parseFloat(a);
          if (a < 0 || a > 1) {
            return;
          } // alpha is [0, 1]
        }

        // now, convert to rgb
        // code from http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript
        if (s === 0) {
          r = g = b = Math.round(l * 255); // achromatic
        } else {
          var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
          var p = 2 * l - q;
          r = Math.round(255 * hue2rgb(p, q, h + 1 / 3));
          g = Math.round(255 * hue2rgb(p, q, h));
          b = Math.round(255 * hue2rgb(p, q, h - 1 / 3));
        }
        ret = [r, g, b, a];
      }
      return ret;
    };

    // get [r, g, b, a] from rgb(0, 0, 0) or rgba(0, 0, 0, 0)
    var rgb2tuple = function rgb2tuple(rgb) {
      var ret;
      var m = new RegExp('^' + rgba + '$').exec(rgb);
      if (m) {
        ret = [];
        var isPct = [];
        for (var i = 1; i <= 3; i++) {
          var channel = m[i];
          if (channel[channel.length - 1] === '%') {
            isPct[i] = true;
          }
          channel = parseFloat(channel);
          if (isPct[i]) {
            channel = channel / 100 * 255; // normalise to [0, 255]
          }

          if (channel < 0 || channel > 255) {
            return;
          } // invalid channel value

          ret.push(Math.floor(channel));
        }
        var atLeastOneIsPct = isPct[1] || isPct[2] || isPct[3];
        var allArePct = isPct[1] && isPct[2] && isPct[3];
        if (atLeastOneIsPct && !allArePct) {
          return;
        } // must all be percent values if one is

        var alpha = m[4];
        if (alpha !== undefined) {
          alpha = parseFloat(alpha);
          if (alpha < 0 || alpha > 1) {
            return;
          } // invalid alpha value

          ret.push(alpha);
        }
      }
      return ret;
    };
    var colorname2tuple = function colorname2tuple(color) {
      return colors[color.toLowerCase()];
    };
    var color2tuple = function color2tuple(color) {
      return (array(color) ? color : null) || colorname2tuple(color) || hex2tuple(color) || rgb2tuple(color) || hsl2tuple(color);
    };
    var colors = {
      // special colour names
      transparent: [0, 0, 0, 0],
      // NB alpha === 0

      // regular colours
      aliceblue: [240, 248, 255],
      antiquewhite: [250, 235, 215],
      aqua: [0, 255, 255],
      aquamarine: [127, 255, 212],
      azure: [240, 255, 255],
      beige: [245, 245, 220],
      bisque: [255, 228, 196],
      black: [0, 0, 0],
      blanchedalmond: [255, 235, 205],
      blue: [0, 0, 255],
      blueviolet: [138, 43, 226],
      brown: [165, 42, 42],
      burlywood: [222, 184, 135],
      cadetblue: [95, 158, 160],
      chartreuse: [127, 255, 0],
      chocolate: [210, 105, 30],
      coral: [255, 127, 80],
      cornflowerblue: [100, 149, 237],
      cornsilk: [255, 248, 220],
      crimson: [220, 20, 60],
      cyan: [0, 255, 255],
      darkblue: [0, 0, 139],
      darkcyan: [0, 139, 139],
      darkgoldenrod: [184, 134, 11],
      darkgray: [169, 169, 169],
      darkgreen: [0, 100, 0],
      darkgrey: [169, 169, 169],
      darkkhaki: [189, 183, 107],
      darkmagenta: [139, 0, 139],
      darkolivegreen: [85, 107, 47],
      darkorange: [255, 140, 0],
      darkorchid: [153, 50, 204],
      darkred: [139, 0, 0],
      darksalmon: [233, 150, 122],
      darkseagreen: [143, 188, 143],
      darkslateblue: [72, 61, 139],
      darkslategray: [47, 79, 79],
      darkslategrey: [47, 79, 79],
      darkturquoise: [0, 206, 209],
      darkviolet: [148, 0, 211],
      deeppink: [255, 20, 147],
      deepskyblue: [0, 191, 255],
      dimgray: [105, 105, 105],
      dimgrey: [105, 105, 105],
      dodgerblue: [30, 144, 255],
      firebrick: [178, 34, 34],
      floralwhite: [255, 250, 240],
      forestgreen: [34, 139, 34],
      fuchsia: [255, 0, 255],
      gainsboro: [220, 220, 220],
      ghostwhite: [248, 248, 255],
      gold: [255, 215, 0],
      goldenrod: [218, 165, 32],
      gray: [128, 128, 128],
      grey: [128, 128, 128],
      green: [0, 128, 0],
      greenyellow: [173, 255, 47],
      honeydew: [240, 255, 240],
      hotpink: [255, 105, 180],
      indianred: [205, 92, 92],
      indigo: [75, 0, 130],
      ivory: [255, 255, 240],
      khaki: [240, 230, 140],
      lavender: [230, 230, 250],
      lavenderblush: [255, 240, 245],
      lawngreen: [124, 252, 0],
      lemonchiffon: [255, 250, 205],
      lightblue: [173, 216, 230],
      lightcoral: [240, 128, 128],
      lightcyan: [224, 255, 255],
      lightgoldenrodyellow: [250, 250, 210],
      lightgray: [211, 211, 211],
      lightgreen: [144, 238, 144],
      lightgrey: [211, 211, 211],
      lightpink: [255, 182, 193],
      lightsalmon: [255, 160, 122],
      lightseagreen: [32, 178, 170],
      lightskyblue: [135, 206, 250],
      lightslategray: [119, 136, 153],
      lightslategrey: [119, 136, 153],
      lightsteelblue: [176, 196, 222],
      lightyellow: [255, 255, 224],
      lime: [0, 255, 0],
      limegreen: [50, 205, 50],
      linen: [250, 240, 230],
      magenta: [255, 0, 255],
      maroon: [128, 0, 0],
      mediumaquamarine: [102, 205, 170],
      mediumblue: [0, 0, 205],
      mediumorchid: [186, 85, 211],
      mediumpurple: [147, 112, 219],
      mediumseagreen: [60, 179, 113],
      mediumslateblue: [123, 104, 238],
      mediumspringgreen: [0, 250, 154],
      mediumturquoise: [72, 209, 204],
      mediumvioletred: [199, 21, 133],
      midnightblue: [25, 25, 112],
      mintcream: [245, 255, 250],
      mistyrose: [255, 228, 225],
      moccasin: [255, 228, 181],
      navajowhite: [255, 222, 173],
      navy: [0, 0, 128],
      oldlace: [253, 245, 230],
      olive: [128, 128, 0],
      olivedrab: [107, 142, 35],
      orange: [255, 165, 0],
      orangered: [255, 69, 0],
      orchid: [218, 112, 214],
      palegoldenrod: [238, 232, 170],
      palegreen: [152, 251, 152],
      paleturquoise: [175, 238, 238],
      palevioletred: [219, 112, 147],
      papayawhip: [255, 239, 213],
      peachpuff: [255, 218, 185],
      peru: [205, 133, 63],
      pink: [255, 192, 203],
      plum: [221, 160, 221],
      powderblue: [176, 224, 230],
      purple: [128, 0, 128],
      red: [255, 0, 0],
      rosybrown: [188, 143, 143],
      royalblue: [65, 105, 225],
      saddlebrown: [139, 69, 19],
      salmon: [250, 128, 114],
      sandybrown: [244, 164, 96],
      seagreen: [46, 139, 87],
      seashell: [255, 245, 238],
      sienna: [160, 82, 45],
      silver: [192, 192, 192],
      skyblue: [135, 206, 235],
      slateblue: [106, 90, 205],
      slategray: [112, 128, 144],
      slategrey: [112, 128, 144],
      snow: [255, 250, 250],
      springgreen: [0, 255, 127],
      steelblue: [70, 130, 180],
      tan: [210, 180, 140],
      teal: [0, 128, 128],
      thistle: [216, 191, 216],
      tomato: [255, 99, 71],
      turquoise: [64, 224, 208],
      violet: [238, 130, 238],
      wheat: [245, 222, 179],
      white: [255, 255, 255],
      whitesmoke: [245, 245, 245],
      yellow: [255, 255, 0],
      yellowgreen: [154, 205, 50]
    };

    // sets the value in a map (map may not be built)
    var setMap = function setMap(options) {
      var obj = options.map;
      var keys = options.keys;
      var l = keys.length;
      for (var i = 0; i < l; i++) {
        var key = keys[i];
        if (plainObject(key)) {
          throw Error('Tried to set map with object key');
        }
        if (i < keys.length - 1) {
          // extend the map if necessary
          if (obj[key] == null) {
            obj[key] = {};
          }
          obj = obj[key];
        } else {
          // set the value
          obj[key] = options.value;
        }
      }
    };

    // gets the value in a map even if it's not built in places
    var getMap = function getMap(options) {
      var obj = options.map;
      var keys = options.keys;
      var l = keys.length;
      for (var i = 0; i < l; i++) {
        var key = keys[i];
        if (plainObject(key)) {
          throw Error('Tried to get map with object key');
        }
        obj = obj[key];
        if (obj == null) {
          return obj;
        }
      }
      return obj;
    };

    /**
     * Checks if `value` is the
     * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
     * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an object, else `false`.
     * @example
     *
     * _.isObject({});
     * // => true
     *
     * _.isObject([1, 2, 3]);
     * // => true
     *
     * _.isObject(_.noop);
     * // => true
     *
     * _.isObject(null);
     * // => false
     */
    function isObject$1(value) {
      var type = typeof value;
      return value != null && (type == 'object' || type == 'function');
    }

    var isObject_1$1 = isObject$1;

    var commonjsGlobal$1 = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};

    function createCommonjsModule(fn, module) {
    	return module = { exports: {} }, fn(module, module.exports), module.exports;
    }

    /** Detect free variable `global` from Node.js. */
    var freeGlobal = typeof commonjsGlobal$1 == 'object' && commonjsGlobal$1 && commonjsGlobal$1.Object === Object && commonjsGlobal$1;

    var _freeGlobal = freeGlobal;

    /** Detect free variable `self`. */
    var freeSelf = typeof self == 'object' && self && self.Object === Object && self;

    /** Used as a reference to the global object. */
    var root = _freeGlobal || freeSelf || Function('return this')();

    var _root = root;

    /**
     * Gets the timestamp of the number of milliseconds that have elapsed since
     * the Unix epoch (1 January 1970 00:00:00 UTC).
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Date
     * @returns {number} Returns the timestamp.
     * @example
     *
     * _.defer(function(stamp) {
     *   console.log(_.now() - stamp);
     * }, _.now());
     * // => Logs the number of milliseconds it took for the deferred invocation.
     */
    var now$1 = function() {
      return _root.Date.now();
    };

    var now_1 = now$1;

    /** Used to match a single whitespace character. */
    var reWhitespace = /\s/;

    /**
     * Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace
     * character of `string`.
     *
     * @private
     * @param {string} string The string to inspect.
     * @returns {number} Returns the index of the last non-whitespace character.
     */
    function trimmedEndIndex(string) {
      var index = string.length;

      while (index-- && reWhitespace.test(string.charAt(index))) {}
      return index;
    }

    var _trimmedEndIndex = trimmedEndIndex;

    /** Used to match leading whitespace. */
    var reTrimStart = /^\s+/;

    /**
     * The base implementation of `_.trim`.
     *
     * @private
     * @param {string} string The string to trim.
     * @returns {string} Returns the trimmed string.
     */
    function baseTrim(string) {
      return string
        ? string.slice(0, _trimmedEndIndex(string) + 1).replace(reTrimStart, '')
        : string;
    }

    var _baseTrim = baseTrim;

    /** Built-in value references. */
    var Symbol$1 = _root.Symbol;

    var _Symbol = Symbol$1;

    /** Used for built-in method references. */
    var objectProto$5 = Object.prototype;

    /** Used to check objects for own properties. */
    var hasOwnProperty$4 = objectProto$5.hasOwnProperty;

    /**
     * Used to resolve the
     * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
     * of values.
     */
    var nativeObjectToString$1 = objectProto$5.toString;

    /** Built-in value references. */
    var symToStringTag$1 = _Symbol ? _Symbol.toStringTag : undefined;

    /**
     * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the raw `toStringTag`.
     */
    function getRawTag(value) {
      var isOwn = hasOwnProperty$4.call(value, symToStringTag$1),
          tag = value[symToStringTag$1];

      try {
        value[symToStringTag$1] = undefined;
        var unmasked = true;
      } catch (e) {}

      var result = nativeObjectToString$1.call(value);
      if (unmasked) {
        if (isOwn) {
          value[symToStringTag$1] = tag;
        } else {
          delete value[symToStringTag$1];
        }
      }
      return result;
    }

    var _getRawTag = getRawTag;

    /** Used for built-in method references. */
    var objectProto$4 = Object.prototype;

    /**
     * Used to resolve the
     * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
     * of values.
     */
    var nativeObjectToString = objectProto$4.toString;

    /**
     * Converts `value` to a string using `Object.prototype.toString`.
     *
     * @private
     * @param {*} value The value to convert.
     * @returns {string} Returns the converted string.
     */
    function objectToString(value) {
      return nativeObjectToString.call(value);
    }

    var _objectToString = objectToString;

    /** `Object#toString` result references. */
    var nullTag = '[object Null]',
        undefinedTag = '[object Undefined]';

    /** Built-in value references. */
    var symToStringTag = _Symbol ? _Symbol.toStringTag : undefined;

    /**
     * The base implementation of `getTag` without fallbacks for buggy environments.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the `toStringTag`.
     */
    function baseGetTag(value) {
      if (value == null) {
        return value === undefined ? undefinedTag : nullTag;
      }
      return (symToStringTag && symToStringTag in Object(value))
        ? _getRawTag(value)
        : _objectToString(value);
    }

    var _baseGetTag = baseGetTag;

    /**
     * Checks if `value` is object-like. A value is object-like if it's not `null`
     * and has a `typeof` result of "object".
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
     * @example
     *
     * _.isObjectLike({});
     * // => true
     *
     * _.isObjectLike([1, 2, 3]);
     * // => true
     *
     * _.isObjectLike(_.noop);
     * // => false
     *
     * _.isObjectLike(null);
     * // => false
     */
    function isObjectLike(value) {
      return value != null && typeof value == 'object';
    }

    var isObjectLike_1 = isObjectLike;

    /** `Object#toString` result references. */
    var symbolTag = '[object Symbol]';

    /**
     * Checks if `value` is classified as a `Symbol` primitive or object.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
     * @example
     *
     * _.isSymbol(Symbol.iterator);
     * // => true
     *
     * _.isSymbol('abc');
     * // => false
     */
    function isSymbol(value) {
      return typeof value == 'symbol' ||
        (isObjectLike_1(value) && _baseGetTag(value) == symbolTag);
    }

    var isSymbol_1 = isSymbol;

    /** Used as references for various `Number` constants. */
    var NAN = 0 / 0;

    /** Used to detect bad signed hexadecimal string values. */
    var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;

    /** Used to detect binary string values. */
    var reIsBinary = /^0b[01]+$/i;

    /** Used to detect octal string values. */
    var reIsOctal = /^0o[0-7]+$/i;

    /** Built-in method references without a dependency on `root`. */
    var freeParseInt = parseInt;

    /**
     * Converts `value` to a number.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to process.
     * @returns {number} Returns the number.
     * @example
     *
     * _.toNumber(3.2);
     * // => 3.2
     *
     * _.toNumber(Number.MIN_VALUE);
     * // => 5e-324
     *
     * _.toNumber(Infinity);
     * // => Infinity
     *
     * _.toNumber('3.2');
     * // => 3.2
     */
    function toNumber(value) {
      if (typeof value == 'number') {
        return value;
      }
      if (isSymbol_1(value)) {
        return NAN;
      }
      if (isObject_1$1(value)) {
        var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
        value = isObject_1$1(other) ? (other + '') : other;
      }
      if (typeof value != 'string') {
        return value === 0 ? value : +value;
      }
      value = _baseTrim(value);
      var isBinary = reIsBinary.test(value);
      return (isBinary || reIsOctal.test(value))
        ? freeParseInt(value.slice(2), isBinary ? 2 : 8)
        : (reIsBadHex.test(value) ? NAN : +value);
    }

    var toNumber_1 = toNumber;

    /** Error message constants. */
    var FUNC_ERROR_TEXT$1 = 'Expected a function';

    /* Built-in method references for those with the same name as other `lodash` methods. */
    var nativeMax = Math.max,
        nativeMin = Math.min;

    /**
     * Creates a debounced function that delays invoking `func` until after `wait`
     * milliseconds have elapsed since the last time the debounced function was
     * invoked. The debounced function comes with a `cancel` method to cancel
     * delayed `func` invocations and a `flush` method to immediately invoke them.
     * Provide `options` to indicate whether `func` should be invoked on the
     * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
     * with the last arguments provided to the debounced function. Subsequent
     * calls to the debounced function return the result of the last `func`
     * invocation.
     *
     * **Note:** If `leading` and `trailing` options are `true`, `func` is
     * invoked on the trailing edge of the timeout only if the debounced function
     * is invoked more than once during the `wait` timeout.
     *
     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
     * until to the next tick, similar to `setTimeout` with a timeout of `0`.
     *
     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
     * for details over the differences between `_.debounce` and `_.throttle`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to debounce.
     * @param {number} [wait=0] The number of milliseconds to delay.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.leading=false]
     *  Specify invoking on the leading edge of the timeout.
     * @param {number} [options.maxWait]
     *  The maximum time `func` is allowed to be delayed before it's invoked.
     * @param {boolean} [options.trailing=true]
     *  Specify invoking on the trailing edge of the timeout.
     * @returns {Function} Returns the new debounced function.
     * @example
     *
     * // Avoid costly calculations while the window size is in flux.
     * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
     *
     * // Invoke `sendMail` when clicked, debouncing subsequent calls.
     * jQuery(element).on('click', _.debounce(sendMail, 300, {
     *   'leading': true,
     *   'trailing': false
     * }));
     *
     * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
     * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
     * var source = new EventSource('/stream');
     * jQuery(source).on('message', debounced);
     *
     * // Cancel the trailing debounced invocation.
     * jQuery(window).on('popstate', debounced.cancel);
     */
    function debounce(func, wait, options) {
      var lastArgs,
          lastThis,
          maxWait,
          result,
          timerId,
          lastCallTime,
          lastInvokeTime = 0,
          leading = false,
          maxing = false,
          trailing = true;

      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT$1);
      }
      wait = toNumber_1(wait) || 0;
      if (isObject_1$1(options)) {
        leading = !!options.leading;
        maxing = 'maxWait' in options;
        maxWait = maxing ? nativeMax(toNumber_1(options.maxWait) || 0, wait) : maxWait;
        trailing = 'trailing' in options ? !!options.trailing : trailing;
      }

      function invokeFunc(time) {
        var args = lastArgs,
            thisArg = lastThis;

        lastArgs = lastThis = undefined;
        lastInvokeTime = time;
        result = func.apply(thisArg, args);
        return result;
      }

      function leadingEdge(time) {
        // Reset any `maxWait` timer.
        lastInvokeTime = time;
        // Start the timer for the trailing edge.
        timerId = setTimeout(timerExpired, wait);
        // Invoke the leading edge.
        return leading ? invokeFunc(time) : result;
      }

      function remainingWait(time) {
        var timeSinceLastCall = time - lastCallTime,
            timeSinceLastInvoke = time - lastInvokeTime,
            timeWaiting = wait - timeSinceLastCall;

        return maxing
          ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)
          : timeWaiting;
      }

      function shouldInvoke(time) {
        var timeSinceLastCall = time - lastCallTime,
            timeSinceLastInvoke = time - lastInvokeTime;

        // Either this is the first call, activity has stopped and we're at the
        // trailing edge, the system time has gone backwards and we're treating
        // it as the trailing edge, or we've hit the `maxWait` limit.
        return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||
          (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
      }

      function timerExpired() {
        var time = now_1();
        if (shouldInvoke(time)) {
          return trailingEdge(time);
        }
        // Restart the timer.
        timerId = setTimeout(timerExpired, remainingWait(time));
      }

      function trailingEdge(time) {
        timerId = undefined;

        // Only invoke if we have `lastArgs` which means `func` has been
        // debounced at least once.
        if (trailing && lastArgs) {
          return invokeFunc(time);
        }
        lastArgs = lastThis = undefined;
        return result;
      }

      function cancel() {
        if (timerId !== undefined) {
          clearTimeout(timerId);
        }
        lastInvokeTime = 0;
        lastArgs = lastCallTime = lastThis = timerId = undefined;
      }

      function flush() {
        return timerId === undefined ? result : trailingEdge(now_1());
      }

      function debounced() {
        var time = now_1(),
            isInvoking = shouldInvoke(time);

        lastArgs = arguments;
        lastThis = this;
        lastCallTime = time;

        if (isInvoking) {
          if (timerId === undefined) {
            return leadingEdge(lastCallTime);
          }
          if (maxing) {
            // Handle invocations in a tight loop.
            clearTimeout(timerId);
            timerId = setTimeout(timerExpired, wait);
            return invokeFunc(lastCallTime);
          }
        }
        if (timerId === undefined) {
          timerId = setTimeout(timerExpired, wait);
        }
        return result;
      }
      debounced.cancel = cancel;
      debounced.flush = flush;
      return debounced;
    }

    var debounce_1 = debounce;

    var performance$1 = _window ? _window.performance : null;
    var pnow = performance$1 && performance$1.now ? function () {
      return performance$1.now();
    } : function () {
      return Date.now();
    };
    var raf = function () {
      if (_window) {
        if (_window.requestAnimationFrame) {
          return function (fn) {
            _window.requestAnimationFrame(fn);
          };
        } else if (_window.mozRequestAnimationFrame) {
          return function (fn) {
            _window.mozRequestAnimationFrame(fn);
          };
        } else if (_window.webkitRequestAnimationFrame) {
          return function (fn) {
            _window.webkitRequestAnimationFrame(fn);
          };
        } else if (_window.msRequestAnimationFrame) {
          return function (fn) {
            _window.msRequestAnimationFrame(fn);
          };
        }
      }
      return function (fn) {
        if (fn) {
          setTimeout(function () {
            fn(pnow());
          }, 1000 / 60);
        }
      };
    }();
    var requestAnimationFrame$1 = function requestAnimationFrame(fn) {
      return raf(fn);
    };
    var performanceNow = pnow;

    var DEFAULT_HASH_SEED = 9261;
    var K = 65599; // 37 also works pretty well
    var DEFAULT_HASH_SEED_ALT = 5381;
    var hashIterableInts = function hashIterableInts(iterator) {
      var seed = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_HASH_SEED;
      // sdbm/string-hash
      var hash = seed;
      var entry;
      for (;;) {
        entry = iterator.next();
        if (entry.done) {
          break;
        }
        hash = hash * K + entry.value | 0;
      }
      return hash;
    };
    var hashInt = function hashInt(num) {
      var seed = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_HASH_SEED;
      // sdbm/string-hash
      return seed * K + num | 0;
    };
    var hashIntAlt = function hashIntAlt(num) {
      var seed = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_HASH_SEED_ALT;
      // djb2/string-hash
      return (seed << 5) + seed + num | 0;
    };
    var combineHashes = function combineHashes(hash1, hash2) {
      return hash1 * 0x200000 + hash2;
    };
    var combineHashesArray = function combineHashesArray(hashes) {
      return hashes[0] * 0x200000 + hashes[1];
    };
    var hashArrays = function hashArrays(hashes1, hashes2) {
      return [hashInt(hashes1[0], hashes2[0]), hashIntAlt(hashes1[1], hashes2[1])];
    };
    var hashIntsArray = function hashIntsArray(ints, seed) {
      var entry = {
        value: 0,
        done: false
      };
      var i = 0;
      var length = ints.length;
      var iterator = {
        next: function next() {
          if (i < length) {
            entry.value = ints[i++];
          } else {
            entry.done = true;
          }
          return entry;
        }
      };
      return hashIterableInts(iterator, seed);
    };
    var hashString = function hashString(str, seed) {
      var entry = {
        value: 0,
        done: false
      };
      var i = 0;
      var length = str.length;
      var iterator = {
        next: function next() {
          if (i < length) {
            entry.value = str.charCodeAt(i++);
          } else {
            entry.done = true;
          }
          return entry;
        }
      };
      return hashIterableInts(iterator, seed);
    };
    var hashStrings = function hashStrings() {
      return hashStringsArray(arguments);
    };
    var hashStringsArray = function hashStringsArray(strs) {
      var hash;
      for (var i = 0; i < strs.length; i++) {
        var str = strs[i];
        if (i === 0) {
          hash = hashString(str);
        } else {
          hash = hashString(str, hash);
        }
      }
      return hash;
    };

    /*global console */
    var warningsEnabled = true;
    var warnSupported = console.warn != null; // eslint-disable-line no-console
    var traceSupported = console.trace != null; // eslint-disable-line no-console

    var MAX_INT$1 = Number.MAX_SAFE_INTEGER || 9007199254740991;
    var trueify = function trueify() {
      return true;
    };
    var falsify = function falsify() {
      return false;
    };
    var zeroify = function zeroify() {
      return 0;
    };
    var noop$1 = function noop() {};
    var error = function error(msg) {
      throw new Error(msg);
    };
    var warnings = function warnings(enabled) {
      if (enabled !== undefined) {
        warningsEnabled = !!enabled;
      } else {
        return warningsEnabled;
      }
    };
    var warn = function warn(msg) {
      /* eslint-disable no-console */
      if (!warnings()) {
        return;
      }
      if (warnSupported) {
        console.warn(msg);
      } else {
        console.log(msg);
        if (traceSupported) {
          console.trace();
        }
      }
    }; /* eslint-enable */

    var clone = function clone(obj) {
      return extend$1({}, obj);
    };

    // gets a shallow copy of the argument
    var copy = function copy(obj) {
      if (obj == null) {
        return obj;
      }
      if (array(obj)) {
        return obj.slice();
      } else if (plainObject(obj)) {
        return clone(obj);
      } else {
        return obj;
      }
    };
    var copyArray$1 = function copyArray(arr) {
      return arr.slice();
    };
    var uuid = function uuid(a, b /* placeholders */) {
      for (
      // loop :)
      b = a = '';
      // b - result , a - numeric letiable
      a++ < 36;
      //
      b += a * 51 & 52 // if "a" is not 9 or 14 or 19 or 24
      ?
      //  return a random number or 4
      (a ^ 15 // if "a" is not 15
      ?
      // generate a random number from 0 to 15
      8 ^ Math.random() * (a ^ 20 ? 16 : 4) // unless "a" is 20, in which case a random number from 8 to 11
      : 4 //  otherwise 4
      ).toString(16) : '-' //  in other cases (if "a" is 9,14,19,24) insert "-"
      ) {
      }
      return b;
    };
    var _staticEmptyObject = {};
    var staticEmptyObject = function staticEmptyObject() {
      return _staticEmptyObject;
    };
    var defaults$g = function defaults(_defaults) {
      var keys = Object.keys(_defaults);
      return function (opts) {
        var filledOpts = {};
        for (var i = 0; i < keys.length; i++) {
          var key = keys[i];
          var optVal = opts == null ? undefined : opts[key];
          filledOpts[key] = optVal === undefined ? _defaults[key] : optVal;
        }
        return filledOpts;
      };
    };
    var removeFromArray = function removeFromArray(arr, ele, oneCopy) {
      for (var i = arr.length - 1; i >= 0; i--) {
        if (arr[i] === ele) {
          arr.splice(i, 1);
          if (oneCopy) {
            break;
          }
        }
      }
    };
    var clearArray = function clearArray(arr) {
      arr.splice(0, arr.length);
    };
    var push = function push(arr, otherArr) {
      for (var i = 0; i < otherArr.length; i++) {
        var el = otherArr[i];
        arr.push(el);
      }
    };
    var getPrefixedProperty = function getPrefixedProperty(obj, propName, prefix) {
      if (prefix) {
        propName = prependCamel(prefix, propName); // e.g. (labelWidth, source) => sourceLabelWidth
      }

      return obj[propName];
    };
    var setPrefixedProperty = function setPrefixedProperty(obj, propName, prefix, value) {
      if (prefix) {
        propName = prependCamel(prefix, propName); // e.g. (labelWidth, source) => sourceLabelWidth
      }

      obj[propName] = value;
    };

    /* global Map */
    var ObjectMap = /*#__PURE__*/function () {
      function ObjectMap() {
        _classCallCheck(this, ObjectMap);
        this._obj = {};
      }
      _createClass(ObjectMap, [{
        key: "set",
        value: function set(key, val) {
          this._obj[key] = val;
          return this;
        }
      }, {
        key: "delete",
        value: function _delete(key) {
          this._obj[key] = undefined;
          return this;
        }
      }, {
        key: "clear",
        value: function clear() {
          this._obj = {};
        }
      }, {
        key: "has",
        value: function has(key) {
          return this._obj[key] !== undefined;
        }
      }, {
        key: "get",
        value: function get(key) {
          return this._obj[key];
        }
      }]);
      return ObjectMap;
    }();
    var Map$2 = typeof Map !== 'undefined' ? Map : ObjectMap;

    /* global Set */

    var undef = "undefined" ;
    var ObjectSet = /*#__PURE__*/function () {
      function ObjectSet(arrayOrObjectSet) {
        _classCallCheck(this, ObjectSet);
        this._obj = Object.create(null);
        this.size = 0;
        if (arrayOrObjectSet != null) {
          var arr;
          if (arrayOrObjectSet.instanceString != null && arrayOrObjectSet.instanceString() === this.instanceString()) {
            arr = arrayOrObjectSet.toArray();
          } else {
            arr = arrayOrObjectSet;
          }
          for (var i = 0; i < arr.length; i++) {
            this.add(arr[i]);
          }
        }
      }
      _createClass(ObjectSet, [{
        key: "instanceString",
        value: function instanceString() {
          return 'set';
        }
      }, {
        key: "add",
        value: function add(val) {
          var o = this._obj;
          if (o[val] !== 1) {
            o[val] = 1;
            this.size++;
          }
        }
      }, {
        key: "delete",
        value: function _delete(val) {
          var o = this._obj;
          if (o[val] === 1) {
            o[val] = 0;
            this.size--;
          }
        }
      }, {
        key: "clear",
        value: function clear() {
          this._obj = Object.create(null);
        }
      }, {
        key: "has",
        value: function has(val) {
          return this._obj[val] === 1;
        }
      }, {
        key: "toArray",
        value: function toArray() {
          var _this = this;
          return Object.keys(this._obj).filter(function (key) {
            return _this.has(key);
          });
        }
      }, {
        key: "forEach",
        value: function forEach(callback, thisArg) {
          return this.toArray().forEach(callback, thisArg);
        }
      }]);
      return ObjectSet;
    }();
    var Set$1 = (typeof Set === "undefined" ? "undefined" : _typeof(Set)) !== undef ? Set : ObjectSet;

    // represents a node or an edge
    var Element = function Element(cy, params) {
      var restore = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;
      if (cy === undefined || params === undefined || !core$1(cy)) {
        error('An element must have a core reference and parameters set');
        return;
      }
      var group = params.group;

      // try to automatically infer the group if unspecified
      if (group == null) {
        if (params.data && params.data.source != null && params.data.target != null) {
          group = 'edges';
        } else {
          group = 'nodes';
        }
      }

      // validate group
      if (group !== 'nodes' && group !== 'edges') {
        error('An element must be of type `nodes` or `edges`; you specified `' + group + '`');
        return;
      }

      // make the element array-like, just like a collection
      this.length = 1;
      this[0] = this;

      // NOTE: when something is added here, add also to ele.json()
      var _p = this._private = {
        cy: cy,
        single: true,
        // indicates this is an element
        data: params.data || {},
        // data object
        position: params.position || {
          x: 0,
          y: 0
        },
        // (x, y) position pair
        autoWidth: undefined,
        // width and height of nodes calculated by the renderer when set to special 'auto' value
        autoHeight: undefined,
        autoPadding: undefined,
        compoundBoundsClean: false,
        // whether the compound dimensions need to be recalculated the next time dimensions are read
        listeners: [],
        // array of bound listeners
        group: group,
        // string; 'nodes' or 'edges'
        style: {},
        // properties as set by the style
        rstyle: {},
        // properties for style sent from the renderer to the core
        styleCxts: [],
        // applied style contexts from the styler
        styleKeys: {},
        // per-group keys of style property values
        removed: true,
        // whether it's inside the vis; true if removed (set true here since we call restore)
        selected: params.selected ? true : false,
        // whether it's selected
        selectable: params.selectable === undefined ? true : params.selectable ? true : false,
        // whether it's selectable
        locked: params.locked ? true : false,
        // whether the element is locked (cannot be moved)
        grabbed: false,
        // whether the element is grabbed by the mouse; renderer sets this privately
        grabbable: params.grabbable === undefined ? true : params.grabbable ? true : false,
        // whether the element can be grabbed
        pannable: params.pannable === undefined ? group === 'edges' ? true : false : params.pannable ? true : false,
        // whether the element has passthrough panning enabled
        active: false,
        // whether the element is active from user interaction
        classes: new Set$1(),
        // map ( className => true )
        animation: {
          // object for currently-running animations
          current: [],
          queue: []
        },
        rscratch: {},
        // object in which the renderer can store information
        scratch: params.scratch || {},
        // scratch objects
        edges: [],
        // array of connected edges
        children: [],
        // array of children
        parent: params.parent && params.parent.isNode() ? params.parent : null,
        // parent ref
        traversalCache: {},
        // cache of output of traversal functions
        backgrounding: false,
        // whether background images are loading
        bbCache: null,
        // cache of the current bounding box
        bbCacheShift: {
          x: 0,
          y: 0
        },
        // shift applied to cached bb to be applied on next get
        bodyBounds: null,
        // bounds cache of element body, w/o overlay
        overlayBounds: null,
        // bounds cache of element body, including overlay
        labelBounds: {
          // bounds cache of labels
          all: null,
          source: null,
          target: null,
          main: null
        },
        arrowBounds: {
          // bounds cache of edge arrows
          source: null,
          target: null,
          'mid-source': null,
          'mid-target': null
        }
      };
      if (_p.position.x == null) {
        _p.position.x = 0;
      }
      if (_p.position.y == null) {
        _p.position.y = 0;
      }

      // renderedPosition overrides if specified
      if (params.renderedPosition) {
        var rpos = params.renderedPosition;
        var pan = cy.pan();
        var zoom = cy.zoom();
        _p.position = {
          x: (rpos.x - pan.x) / zoom,
          y: (rpos.y - pan.y) / zoom
        };
      }
      var classes = [];
      if (array(params.classes)) {
        classes = params.classes;
      } else if (string(params.classes)) {
        classes = params.classes.split(/\s+/);
      }
      for (var i = 0, l = classes.length; i < l; i++) {
        var cls = classes[i];
        if (!cls || cls === '') {
          continue;
        }
        _p.classes.add(cls);
      }
      this.createEmitter();
      var bypass = params.style || params.css;
      if (bypass) {
        warn('Setting a `style` bypass at element creation should be done only when absolutely necessary.  Try to use the stylesheet instead.');
        this.style(bypass);
      }
      if (restore === undefined || restore) {
        this.restore();
      }
    };

    var defineSearch = function defineSearch(params) {
      params = {
        bfs: params.bfs || !params.dfs,
        dfs: params.dfs || !params.bfs
      };

      // from pseudocode on wikipedia
      return function searchFn(roots, fn, directed) {
        var options;
        if (plainObject(roots) && !elementOrCollection(roots)) {
          options = roots;
          roots = options.roots || options.root;
          fn = options.visit;
          directed = options.directed;
        }
        directed = arguments.length === 2 && !fn$6(fn) ? fn : directed;
        fn = fn$6(fn) ? fn : function () {};
        var cy = this._private.cy;
        var v = roots = string(roots) ? this.filter(roots) : roots;
        var Q = [];
        var connectedNodes = [];
        var connectedBy = {};
        var id2depth = {};
        var V = {};
        var j = 0;
        var found;
        var _this$byGroup = this.byGroup(),
          nodes = _this$byGroup.nodes,
          edges = _this$byGroup.edges;

        // enqueue v
        for (var i = 0; i < v.length; i++) {
          var vi = v[i];
          var viId = vi.id();
          if (vi.isNode()) {
            Q.unshift(vi);
            if (params.bfs) {
              V[viId] = true;
              connectedNodes.push(vi);
            }
            id2depth[viId] = 0;
          }
        }
        var _loop = function _loop() {
          var v = params.bfs ? Q.shift() : Q.pop();
          var vId = v.id();
          if (params.dfs) {
            if (V[vId]) {
              return "continue";
            }
            V[vId] = true;
            connectedNodes.push(v);
          }
          var depth = id2depth[vId];
          var prevEdge = connectedBy[vId];
          var src = prevEdge != null ? prevEdge.source() : null;
          var tgt = prevEdge != null ? prevEdge.target() : null;
          var prevNode = prevEdge == null ? undefined : v.same(src) ? tgt[0] : src[0];
          var ret = void 0;
          ret = fn(v, prevEdge, prevNode, j++, depth);
          if (ret === true) {
            found = v;
            return "break";
          }
          if (ret === false) {
            return "break";
          }
          var vwEdges = v.connectedEdges().filter(function (e) {
            return (!directed || e.source().same(v)) && edges.has(e);
          });
          for (var _i2 = 0; _i2 < vwEdges.length; _i2++) {
            var e = vwEdges[_i2];
            var w = e.connectedNodes().filter(function (n) {
              return !n.same(v) && nodes.has(n);
            });
            var wId = w.id();
            if (w.length !== 0 && !V[wId]) {
              w = w[0];
              Q.push(w);
              if (params.bfs) {
                V[wId] = true;
                connectedNodes.push(w);
              }
              connectedBy[wId] = e;
              id2depth[wId] = id2depth[vId] + 1;
            }
          }
        };
        while (Q.length !== 0) {
          var _ret = _loop();
          if (_ret === "continue") continue;
          if (_ret === "break") break;
        }
        var connectedEles = cy.collection();
        for (var _i = 0; _i < connectedNodes.length; _i++) {
          var node = connectedNodes[_i];
          var edge = connectedBy[node.id()];
          if (edge != null) {
            connectedEles.push(edge);
          }
          connectedEles.push(node);
        }
        return {
          path: cy.collection(connectedEles),
          found: cy.collection(found)
        };
      };
    };

    // search, spanning trees, etc
    var elesfn$v = {
      breadthFirstSearch: defineSearch({
        bfs: true
      }),
      depthFirstSearch: defineSearch({
        dfs: true
      })
    };

    // nice, short mathematical alias
    elesfn$v.bfs = elesfn$v.breadthFirstSearch;
    elesfn$v.dfs = elesfn$v.depthFirstSearch;

    var heap$1 = createCommonjsModule(function (module, exports) {
    // Generated by CoffeeScript 1.8.0
    (function() {
      var Heap, defaultCmp, floor, heapify, heappop, heappush, heappushpop, heapreplace, insort, min, nlargest, nsmallest, updateItem, _siftdown, _siftup;

      floor = Math.floor, min = Math.min;


      /*
      Default comparison function to be used
       */

      defaultCmp = function(x, y) {
        if (x < y) {
          return -1;
        }
        if (x > y) {
          return 1;
        }
        return 0;
      };


      /*
      Insert item x in list a, and keep it sorted assuming a is sorted.
      
      If x is already in a, insert it to the right of the rightmost x.
      
      Optional args lo (default 0) and hi (default a.length) bound the slice
      of a to be searched.
       */

      insort = function(a, x, lo, hi, cmp) {
        var mid;
        if (lo == null) {
          lo = 0;
        }
        if (cmp == null) {
          cmp = defaultCmp;
        }
        if (lo < 0) {
          throw new Error('lo must be non-negative');
        }
        if (hi == null) {
          hi = a.length;
        }
        while (lo < hi) {
          mid = floor((lo + hi) / 2);
          if (cmp(x, a[mid]) < 0) {
            hi = mid;
          } else {
            lo = mid + 1;
          }
        }
        return ([].splice.apply(a, [lo, lo - lo].concat(x)), x);
      };


      /*
      Push item onto heap, maintaining the heap invariant.
       */

      heappush = function(array, item, cmp) {
        if (cmp == null) {
          cmp = defaultCmp;
        }
        array.push(item);
        return _siftdown(array, 0, array.length - 1, cmp);
      };


      /*
      Pop the smallest item off the heap, maintaining the heap invariant.
       */

      heappop = function(array, cmp) {
        var lastelt, returnitem;
        if (cmp == null) {
          cmp = defaultCmp;
        }
        lastelt = array.pop();
        if (array.length) {
          returnitem = array[0];
          array[0] = lastelt;
          _siftup(array, 0, cmp);
        } else {
          returnitem = lastelt;
        }
        return returnitem;
      };


      /*
      Pop and return the current smallest value, and add the new item.
      
      This is more efficient than heappop() followed by heappush(), and can be
      more appropriate when using a fixed size heap. Note that the value
      returned may be larger than item! That constrains reasonable use of
      this routine unless written as part of a conditional replacement:
          if item > array[0]
            item = heapreplace(array, item)
       */

      heapreplace = function(array, item, cmp) {
        var returnitem;
        if (cmp == null) {
          cmp = defaultCmp;
        }
        returnitem = array[0];
        array[0] = item;
        _siftup(array, 0, cmp);
        return returnitem;
      };


      /*
      Fast version of a heappush followed by a heappop.
       */

      heappushpop = function(array, item, cmp) {
        var _ref;
        if (cmp == null) {
          cmp = defaultCmp;
        }
        if (array.length && cmp(array[0], item) < 0) {
          _ref = [array[0], item], item = _ref[0], array[0] = _ref[1];
          _siftup(array, 0, cmp);
        }
        return item;
      };


      /*
      Transform list into a heap, in-place, in O(array.length) time.
       */

      heapify = function(array, cmp) {
        var i, _i, _len, _ref1, _results, _results1;
        if (cmp == null) {
          cmp = defaultCmp;
        }
        _ref1 = (function() {
          _results1 = [];
          for (var _j = 0, _ref = floor(array.length / 2); 0 <= _ref ? _j < _ref : _j > _ref; 0 <= _ref ? _j++ : _j--){ _results1.push(_j); }
          return _results1;
        }).apply(this).reverse();
        _results = [];
        for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
          i = _ref1[_i];
          _results.push(_siftup(array, i, cmp));
        }
        return _results;
      };


      /*
      Update the position of the given item in the heap.
      This function should be called every time the item is being modified.
       */

      updateItem = function(array, item, cmp) {
        var pos;
        if (cmp == null) {
          cmp = defaultCmp;
        }
        pos = array.indexOf(item);
        if (pos === -1) {
          return;
        }
        _siftdown(array, 0, pos, cmp);
        return _siftup(array, pos, cmp);
      };


      /*
      Find the n largest elements in a dataset.
       */

      nlargest = function(array, n, cmp) {
        var elem, result, _i, _len, _ref;
        if (cmp == null) {
          cmp = defaultCmp;
        }
        result = array.slice(0, n);
        if (!result.length) {
          return result;
        }
        heapify(result, cmp);
        _ref = array.slice(n);
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          elem = _ref[_i];
          heappushpop(result, elem, cmp);
        }
        return result.sort(cmp).reverse();
      };


      /*
      Find the n smallest elements in a dataset.
       */

      nsmallest = function(array, n, cmp) {
        var elem, los, result, _i, _j, _len, _ref, _ref1, _results;
        if (cmp == null) {
          cmp = defaultCmp;
        }
        if (n * 10 <= array.length) {
          result = array.slice(0, n).sort(cmp);
          if (!result.length) {
            return result;
          }
          los = result[result.length - 1];
          _ref = array.slice(n);
          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
            elem = _ref[_i];
            if (cmp(elem, los) < 0) {
              insort(result, elem, 0, null, cmp);
              result.pop();
              los = result[result.length - 1];
            }
          }
          return result;
        }
        heapify(array, cmp);
        _results = [];
        for (_j = 0, _ref1 = min(n, array.length); 0 <= _ref1 ? _j < _ref1 : _j > _ref1; 0 <= _ref1 ? ++_j : --_j) {
          _results.push(heappop(array, cmp));
        }
        return _results;
      };

      _siftdown = function(array, startpos, pos, cmp) {
        var newitem, parent, parentpos;
        if (cmp == null) {
          cmp = defaultCmp;
        }
        newitem = array[pos];
        while (pos > startpos) {
          parentpos = (pos - 1) >> 1;
          parent = array[parentpos];
          if (cmp(newitem, parent) < 0) {
            array[pos] = parent;
            pos = parentpos;
            continue;
          }
          break;
        }
        return array[pos] = newitem;
      };

      _siftup = function(array, pos, cmp) {
        var childpos, endpos, newitem, rightpos, startpos;
        if (cmp == null) {
          cmp = defaultCmp;
        }
        endpos = array.length;
        startpos = pos;
        newitem = array[pos];
        childpos = 2 * pos + 1;
        while (childpos < endpos) {
          rightpos = childpos + 1;
          if (rightpos < endpos && !(cmp(array[childpos], array[rightpos]) < 0)) {
            childpos = rightpos;
          }
          array[pos] = array[childpos];
          pos = childpos;
          childpos = 2 * pos + 1;
        }
        array[pos] = newitem;
        return _siftdown(array, startpos, pos, cmp);
      };

      Heap = (function() {
        Heap.push = heappush;

        Heap.pop = heappop;

        Heap.replace = heapreplace;

        Heap.pushpop = heappushpop;

        Heap.heapify = heapify;

        Heap.updateItem = updateItem;

        Heap.nlargest = nlargest;

        Heap.nsmallest = nsmallest;

        function Heap(cmp) {
          this.cmp = cmp != null ? cmp : defaultCmp;
          this.nodes = [];
        }

        Heap.prototype.push = function(x) {
          return heappush(this.nodes, x, this.cmp);
        };

        Heap.prototype.pop = function() {
          return heappop(this.nodes, this.cmp);
        };

        Heap.prototype.peek = function() {
          return this.nodes[0];
        };

        Heap.prototype.contains = function(x) {
          return this.nodes.indexOf(x) !== -1;
        };

        Heap.prototype.replace = function(x) {
          return heapreplace(this.nodes, x, this.cmp);
        };

        Heap.prototype.pushpop = function(x) {
          return heappushpop(this.nodes, x, this.cmp);
        };

        Heap.prototype.heapify = function() {
          return heapify(this.nodes, this.cmp);
        };

        Heap.prototype.updateItem = function(x) {
          return updateItem(this.nodes, x, this.cmp);
        };

        Heap.prototype.clear = function() {
          return this.nodes = [];
        };

        Heap.prototype.empty = function() {
          return this.nodes.length === 0;
        };

        Heap.prototype.size = function() {
          return this.nodes.length;
        };

        Heap.prototype.clone = function() {
          var heap;
          heap = new Heap();
          heap.nodes = this.nodes.slice(0);
          return heap;
        };

        Heap.prototype.toArray = function() {
          return this.nodes.slice(0);
        };

        Heap.prototype.insert = Heap.prototype.push;

        Heap.prototype.top = Heap.prototype.peek;

        Heap.prototype.front = Heap.prototype.peek;

        Heap.prototype.has = Heap.prototype.contains;

        Heap.prototype.copy = Heap.prototype.clone;

        return Heap;

      })();

      (function(root, factory) {
        {
          return module.exports = factory();
        }
      })(this, function() {
        return Heap;
      });

    }).call(commonjsGlobal$1);
    });

    var heap = heap$1;

    var dijkstraDefaults = defaults$g({
      root: null,
      weight: function weight(edge) {
        return 1;
      },
      directed: false
    });
    var elesfn$u = {
      dijkstra: function dijkstra(options) {
        if (!plainObject(options)) {
          var args = arguments;
          options = {
            root: args[0],
            weight: args[1],
            directed: args[2]
          };
        }
        var _dijkstraDefaults = dijkstraDefaults(options),
          root = _dijkstraDefaults.root,
          weight = _dijkstraDefaults.weight,
          directed = _dijkstraDefaults.directed;
        var eles = this;
        var weightFn = weight;
        var source = string(root) ? this.filter(root)[0] : root[0];
        var dist = {};
        var prev = {};
        var knownDist = {};
        var _this$byGroup = this.byGroup(),
          nodes = _this$byGroup.nodes,
          edges = _this$byGroup.edges;
        edges.unmergeBy(function (ele) {
          return ele.isLoop();
        });
        var getDist = function getDist(node) {
          return dist[node.id()];
        };
        var setDist = function setDist(node, d) {
          dist[node.id()] = d;
          Q.updateItem(node);
        };
        var Q = new heap(function (a, b) {
          return getDist(a) - getDist(b);
        });
        for (var i = 0; i < nodes.length; i++) {
          var node = nodes[i];
          dist[node.id()] = node.same(source) ? 0 : Infinity;
          Q.push(node);
        }
        var distBetween = function distBetween(u, v) {
          var uvs = (directed ? u.edgesTo(v) : u.edgesWith(v)).intersect(edges);
          var smallestDistance = Infinity;
          var smallestEdge;
          for (var _i = 0; _i < uvs.length; _i++) {
            var edge = uvs[_i];
            var _weight = weightFn(edge);
            if (_weight < smallestDistance || !smallestEdge) {
              smallestDistance = _weight;
              smallestEdge = edge;
            }
          }
          return {
            edge: smallestEdge,
            dist: smallestDistance
          };
        };
        while (Q.size() > 0) {
          var u = Q.pop();
          var smalletsDist = getDist(u);
          var uid = u.id();
          knownDist[uid] = smalletsDist;
          if (smalletsDist === Infinity) {
            continue;
          }
          var neighbors = u.neighborhood().intersect(nodes);
          for (var _i2 = 0; _i2 < neighbors.length; _i2++) {
            var v = neighbors[_i2];
            var vid = v.id();
            var vDist = distBetween(u, v);
            var alt = smalletsDist + vDist.dist;
            if (alt < getDist(v)) {
              setDist(v, alt);
              prev[vid] = {
                node: u,
                edge: vDist.edge
              };
            }
          } // for
        } // while

        return {
          distanceTo: function distanceTo(node) {
            var target = string(node) ? nodes.filter(node)[0] : node[0];
            return knownDist[target.id()];
          },
          pathTo: function pathTo(node) {
            var target = string(node) ? nodes.filter(node)[0] : node[0];
            var S = [];
            var u = target;
            var uid = u.id();
            if (target.length > 0) {
              S.unshift(target);
              while (prev[uid]) {
                var p = prev[uid];
                S.unshift(p.edge);
                S.unshift(p.node);
                u = p.node;
                uid = u.id();
              }
            }
            return eles.spawn(S);
          }
        };
      }
    };

    var elesfn$t = {
      // kruskal's algorithm (finds min spanning tree, assuming undirected graph)
      // implemented from pseudocode from wikipedia
      kruskal: function kruskal(weightFn) {
        weightFn = weightFn || function (edge) {
          return 1;
        };
        var _this$byGroup = this.byGroup(),
          nodes = _this$byGroup.nodes,
          edges = _this$byGroup.edges;
        var numNodes = nodes.length;
        var forest = new Array(numNodes);
        var A = nodes; // assumes byGroup() creates new collections that can be safely mutated

        var findSetIndex = function findSetIndex(ele) {
          for (var i = 0; i < forest.length; i++) {
            var eles = forest[i];
            if (eles.has(ele)) {
              return i;
            }
          }
        };

        // start with one forest per node
        for (var i = 0; i < numNodes; i++) {
          forest[i] = this.spawn(nodes[i]);
        }
        var S = edges.sort(function (a, b) {
          return weightFn(a) - weightFn(b);
        });
        for (var _i = 0; _i < S.length; _i++) {
          var edge = S[_i];
          var u = edge.source()[0];
          var v = edge.target()[0];
          var setUIndex = findSetIndex(u);
          var setVIndex = findSetIndex(v);
          var setU = forest[setUIndex];
          var setV = forest[setVIndex];
          if (setUIndex !== setVIndex) {
            A.merge(edge);

            // combine forests for u and v
            setU.merge(setV);
            forest.splice(setVIndex, 1);
          }
        }
        return A;
      }
    };

    var aStarDefaults = defaults$g({
      root: null,
      goal: null,
      weight: function weight(edge) {
        return 1;
      },
      heuristic: function heuristic(edge) {
        return 0;
      },
      directed: false
    });
    var elesfn$s = {
      // Implemented from pseudocode from wikipedia
      aStar: function aStar(options) {
        var cy = this.cy();
        var _aStarDefaults = aStarDefaults(options),
          root = _aStarDefaults.root,
          goal = _aStarDefaults.goal,
          heuristic = _aStarDefaults.heuristic,
          directed = _aStarDefaults.directed,
          weight = _aStarDefaults.weight;
        root = cy.collection(root)[0];
        goal = cy.collection(goal)[0];
        var sid = root.id();
        var tid = goal.id();
        var gScore = {};
        var fScore = {};
        var closedSetIds = {};
        var openSet = new heap(function (a, b) {
          return fScore[a.id()] - fScore[b.id()];
        });
        var openSetIds = new Set$1();
        var cameFrom = {};
        var cameFromEdge = {};
        var addToOpenSet = function addToOpenSet(ele, id) {
          openSet.push(ele);
          openSetIds.add(id);
        };
        var cMin, cMinId;
        var popFromOpenSet = function popFromOpenSet() {
          cMin = openSet.pop();
          cMinId = cMin.id();
          openSetIds["delete"](cMinId);
        };
        var isInOpenSet = function isInOpenSet(id) {
          return openSetIds.has(id);
        };
        addToOpenSet(root, sid);
        gScore[sid] = 0;
        fScore[sid] = heuristic(root);

        // Counter
        var steps = 0;

        // Main loop
        while (openSet.size() > 0) {
          popFromOpenSet();
          steps++;

          // If we've found our goal, then we are done
          if (cMinId === tid) {
            var path = [];
            var pathNode = goal;
            var pathNodeId = tid;
            var pathEdge = cameFromEdge[pathNodeId];
            for (;;) {
              path.unshift(pathNode);
              if (pathEdge != null) {
                path.unshift(pathEdge);
              }
              pathNode = cameFrom[pathNodeId];
              if (pathNode == null) {
                break;
              }
              pathNodeId = pathNode.id();
              pathEdge = cameFromEdge[pathNodeId];
            }
            return {
              found: true,
              distance: gScore[cMinId],
              path: this.spawn(path),
              steps: steps
            };
          }

          // Add cMin to processed nodes
          closedSetIds[cMinId] = true;

          // Update scores for neighbors of cMin
          // Take into account if graph is directed or not
          var vwEdges = cMin._private.edges;
          for (var i = 0; i < vwEdges.length; i++) {
            var e = vwEdges[i];

            // edge must be in set of calling eles
            if (!this.hasElementWithId(e.id())) {
              continue;
            }

            // cMin must be the source of edge if directed
            if (directed && e.data('source') !== cMinId) {
              continue;
            }
            var wSrc = e.source();
            var wTgt = e.target();
            var w = wSrc.id() !== cMinId ? wSrc : wTgt;
            var wid = w.id();

            // node must be in set of calling eles
            if (!this.hasElementWithId(wid)) {
              continue;
            }

            // if node is in closedSet, ignore it
            if (closedSetIds[wid]) {
              continue;
            }

            // New tentative score for node w
            var tempScore = gScore[cMinId] + weight(e);

            // Update gScore for node w if:
            //   w not present in openSet
            // OR
            //   tentative gScore is less than previous value

            // w not in openSet
            if (!isInOpenSet(wid)) {
              gScore[wid] = tempScore;
              fScore[wid] = tempScore + heuristic(w);
              addToOpenSet(w, wid);
              cameFrom[wid] = cMin;
              cameFromEdge[wid] = e;
              continue;
            }

            // w already in openSet, but with greater gScore
            if (tempScore < gScore[wid]) {
              gScore[wid] = tempScore;
              fScore[wid] = tempScore + heuristic(w);
              cameFrom[wid] = cMin;
              cameFromEdge[wid] = e;
            }
          } // End of neighbors update
        } // End of main loop

        // If we've reached here, then we've not reached our goal
        return {
          found: false,
          distance: undefined,
          path: undefined,
          steps: steps
        };
      }
    }; // elesfn

    var floydWarshallDefaults = defaults$g({
      weight: function weight(edge) {
        return 1;
      },
      directed: false
    });
    var elesfn$r = {
      // Implemented from pseudocode from wikipedia
      floydWarshall: function floydWarshall(options) {
        var cy = this.cy();
        var _floydWarshallDefault = floydWarshallDefaults(options),
          weight = _floydWarshallDefault.weight,
          directed = _floydWarshallDefault.directed;
        var weightFn = weight;
        var _this$byGroup = this.byGroup(),
          nodes = _this$byGroup.nodes,
          edges = _this$byGroup.edges;
        var N = nodes.length;
        var Nsq = N * N;
        var indexOf = function indexOf(node) {
          return nodes.indexOf(node);
        };
        var atIndex = function atIndex(i) {
          return nodes[i];
        };

        // Initialize distance matrix
        var dist = new Array(Nsq);
        for (var n = 0; n < Nsq; n++) {
          var j = n % N;
          var i = (n - j) / N;
          if (i === j) {
            dist[n] = 0;
          } else {
            dist[n] = Infinity;
          }
        }

        // Initialize matrix used for path reconstruction
        // Initialize distance matrix
        var next = new Array(Nsq);
        var edgeNext = new Array(Nsq);

        // Process edges
        for (var _i = 0; _i < edges.length; _i++) {
          var edge = edges[_i];
          var src = edge.source()[0];
          var tgt = edge.target()[0];
          if (src === tgt) {
            continue;
          } // exclude loops

          var s = indexOf(src);
          var t = indexOf(tgt);
          var st = s * N + t; // source to target index
          var _weight = weightFn(edge);

          // Check if already process another edge between same 2 nodes
          if (dist[st] > _weight) {
            dist[st] = _weight;
            next[st] = t;
            edgeNext[st] = edge;
          }

          // If undirected graph, process 'reversed' edge
          if (!directed) {
            var ts = t * N + s; // target to source index

            if (!directed && dist[ts] > _weight) {
              dist[ts] = _weight;
              next[ts] = s;
              edgeNext[ts] = edge;
            }
          }
        }

        // Main loop
        for (var k = 0; k < N; k++) {
          for (var _i2 = 0; _i2 < N; _i2++) {
            var ik = _i2 * N + k;
            for (var _j = 0; _j < N; _j++) {
              var ij = _i2 * N + _j;
              var kj = k * N + _j;
              if (dist[ik] + dist[kj] < dist[ij]) {
                dist[ij] = dist[ik] + dist[kj];
                next[ij] = next[ik];
              }
            }
          }
        }
        var getArgEle = function getArgEle(ele) {
          return (string(ele) ? cy.filter(ele) : ele)[0];
        };
        var indexOfArgEle = function indexOfArgEle(ele) {
          return indexOf(getArgEle(ele));
        };
        var res = {
          distance: function distance(from, to) {
            var i = indexOfArgEle(from);
            var j = indexOfArgEle(to);
            return dist[i * N + j];
          },
          path: function path(from, to) {
            var i = indexOfArgEle(from);
            var j = indexOfArgEle(to);
            var fromNode = atIndex(i);
            if (i === j) {
              return fromNode.collection();
            }
            if (next[i * N + j] == null) {
              return cy.collection();
            }
            var path = cy.collection();
            var prev = i;
            var edge;
            path.merge(fromNode);
            while (i !== j) {
              prev = i;
              i = next[i * N + j];
              edge = edgeNext[prev * N + i];
              path.merge(edge);
              path.merge(atIndex(i));
            }
            return path;
          }
        };
        return res;
      } // floydWarshall
    }; // elesfn

    var bellmanFordDefaults = defaults$g({
      weight: function weight(edge) {
        return 1;
      },
      directed: false,
      root: null
    });
    var elesfn$q = {
      // Implemented from pseudocode from wikipedia
      bellmanFord: function bellmanFord(options) {
        var _this = this;
        var _bellmanFordDefaults = bellmanFordDefaults(options),
          weight = _bellmanFordDefaults.weight,
          directed = _bellmanFordDefaults.directed,
          root = _bellmanFordDefaults.root;
        var weightFn = weight;
        var eles = this;
        var cy = this.cy();
        var _this$byGroup = this.byGroup(),
          edges = _this$byGroup.edges,
          nodes = _this$byGroup.nodes;
        var numNodes = nodes.length;
        var infoMap = new Map$2();
        var hasNegativeWeightCycle = false;
        var negativeWeightCycles = [];
        root = cy.collection(root)[0]; // in case selector passed

        edges.unmergeBy(function (edge) {
          return edge.isLoop();
        });
        var numEdges = edges.length;
        var getInfo = function getInfo(node) {
          var obj = infoMap.get(node.id());
          if (!obj) {
            obj = {};
            infoMap.set(node.id(), obj);
          }
          return obj;
        };
        var getNodeFromTo = function getNodeFromTo(to) {
          return (string(to) ? cy.$(to) : to)[0];
        };
        var distanceTo = function distanceTo(to) {
          return getInfo(getNodeFromTo(to)).dist;
        };
        var pathTo = function pathTo(to) {
          var thisStart = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : root;
          var end = getNodeFromTo(to);
          var path = [];
          var node = end;
          for (;;) {
            if (node == null) {
              return _this.spawn();
            }
            var _getInfo = getInfo(node),
              edge = _getInfo.edge,
              pred = _getInfo.pred;
            path.unshift(node[0]);
            if (node.same(thisStart) && path.length > 0) {
              break;
            }
            if (edge != null) {
              path.unshift(edge);
            }
            node = pred;
          }
          return eles.spawn(path);
        };

        // Initializations { dist, pred, edge }
        for (var i = 0; i < numNodes; i++) {
          var node = nodes[i];
          var info = getInfo(node);
          if (node.same(root)) {
            info.dist = 0;
          } else {
            info.dist = Infinity;
          }
          info.pred = null;
          info.edge = null;
        }

        // Edges relaxation
        var replacedEdge = false;
        var checkForEdgeReplacement = function checkForEdgeReplacement(node1, node2, edge, info1, info2, weight) {
          var dist = info1.dist + weight;
          if (dist < info2.dist && !edge.same(info1.edge)) {
            info2.dist = dist;
            info2.pred = node1;
            info2.edge = edge;
            replacedEdge = true;
          }
        };
        for (var _i = 1; _i < numNodes; _i++) {
          replacedEdge = false;
          for (var e = 0; e < numEdges; e++) {
            var edge = edges[e];
            var src = edge.source();
            var tgt = edge.target();
            var _weight = weightFn(edge);
            var srcInfo = getInfo(src);
            var tgtInfo = getInfo(tgt);
            checkForEdgeReplacement(src, tgt, edge, srcInfo, tgtInfo, _weight);

            // If undirected graph, we need to take into account the 'reverse' edge
            if (!directed) {
              checkForEdgeReplacement(tgt, src, edge, tgtInfo, srcInfo, _weight);
            }
          }
          if (!replacedEdge) {
            break;
          }
        }
        if (replacedEdge) {
          // Check for negative weight cycles
          var negativeWeightCycleIds = [];
          for (var _e = 0; _e < numEdges; _e++) {
            var _edge = edges[_e];
            var _src = _edge.source();
            var _tgt = _edge.target();
            var _weight2 = weightFn(_edge);
            var srcDist = getInfo(_src).dist;
            var tgtDist = getInfo(_tgt).dist;
            if (srcDist + _weight2 < tgtDist || !directed && tgtDist + _weight2 < srcDist) {
              if (!hasNegativeWeightCycle) {
                warn('Graph contains a negative weight cycle for Bellman-Ford');
                hasNegativeWeightCycle = true;
              }
              if (options.findNegativeWeightCycles !== false) {
                var negativeNodes = [];
                if (srcDist + _weight2 < tgtDist) {
                  negativeNodes.push(_src);
                }
                if (!directed && tgtDist + _weight2 < srcDist) {
                  negativeNodes.push(_tgt);
                }
                var numNegativeNodes = negativeNodes.length;
                for (var n = 0; n < numNegativeNodes; n++) {
                  var start = negativeNodes[n];
                  var cycle = [start];
                  cycle.push(getInfo(start).edge);
                  var _node = getInfo(start).pred;
                  while (cycle.indexOf(_node) === -1) {
                    cycle.push(_node);
                    cycle.push(getInfo(_node).edge);
                    _node = getInfo(_node).pred;
                  }
                  cycle = cycle.slice(cycle.indexOf(_node));
                  var smallestId = cycle[0].id();
                  var smallestIndex = 0;
                  for (var c = 2; c < cycle.length; c += 2) {
                    if (cycle[c].id() < smallestId) {
                      smallestId = cycle[c].id();
                      smallestIndex = c;
                    }
                  }
                  cycle = cycle.slice(smallestIndex).concat(cycle.slice(0, smallestIndex));
                  cycle.push(cycle[0]);
                  var cycleId = cycle.map(function (el) {
                    return el.id();
                  }).join(",");
                  if (negativeWeightCycleIds.indexOf(cycleId) === -1) {
                    negativeWeightCycles.push(eles.spawn(cycle));
                    negativeWeightCycleIds.push(cycleId);
                  }
                }
              } else {
                break;
              }
            }
          }
        }
        return {
          distanceTo: distanceTo,
          pathTo: pathTo,
          hasNegativeWeightCycle: hasNegativeWeightCycle,
          negativeWeightCycles: negativeWeightCycles
        };
      } // bellmanFord
    }; // elesfn

    var sqrt2 = Math.sqrt(2);

    // Function which colapses 2 (meta) nodes into one
    // Updates the remaining edge lists
    // Receives as a paramater the edge which causes the collapse
    var collapse = function collapse(edgeIndex, nodeMap, remainingEdges) {
      if (remainingEdges.length === 0) {
        error("Karger-Stein must be run on a connected (sub)graph");
      }
      var edgeInfo = remainingEdges[edgeIndex];
      var sourceIn = edgeInfo[1];
      var targetIn = edgeInfo[2];
      var partition1 = nodeMap[sourceIn];
      var partition2 = nodeMap[targetIn];
      var newEdges = remainingEdges; // re-use array

      // Delete all edges between partition1 and partition2
      for (var i = newEdges.length - 1; i >= 0; i--) {
        var edge = newEdges[i];
        var src = edge[1];
        var tgt = edge[2];
        if (nodeMap[src] === partition1 && nodeMap[tgt] === partition2 || nodeMap[src] === partition2 && nodeMap[tgt] === partition1) {
          newEdges.splice(i, 1);
        }
      }

      // All edges pointing to partition2 should now point to partition1
      for (var _i = 0; _i < newEdges.length; _i++) {
        var _edge = newEdges[_i];
        if (_edge[1] === partition2) {
          // Check source
          newEdges[_i] = _edge.slice(); // copy
          newEdges[_i][1] = partition1;
        } else if (_edge[2] === partition2) {
          // Check target
          newEdges[_i] = _edge.slice(); // copy
          newEdges[_i][2] = partition1;
        }
      }

      // Move all nodes from partition2 to partition1
      for (var _i2 = 0; _i2 < nodeMap.length; _i2++) {
        if (nodeMap[_i2] === partition2) {
          nodeMap[_i2] = partition1;
        }
      }
      return newEdges;
    };

    // Contracts a graph until we reach a certain number of meta nodes
    var contractUntil = function contractUntil(metaNodeMap, remainingEdges, size, sizeLimit) {
      while (size > sizeLimit) {
        // Choose an edge randomly
        var edgeIndex = Math.floor(Math.random() * remainingEdges.length);

        // Collapse graph based on edge
        remainingEdges = collapse(edgeIndex, metaNodeMap, remainingEdges);
        size--;
      }
      return remainingEdges;
    };
    var elesfn$p = {
      // Computes the minimum cut of an undirected graph
      // Returns the correct answer with high probability
      kargerStein: function kargerStein() {
        var _this = this;
        var _this$byGroup = this.byGroup(),
          nodes = _this$byGroup.nodes,
          edges = _this$byGroup.edges;
        edges.unmergeBy(function (edge) {
          return edge.isLoop();
        });
        var numNodes = nodes.length;
        var numEdges = edges.length;
        var numIter = Math.ceil(Math.pow(Math.log(numNodes) / Math.LN2, 2));
        var stopSize = Math.floor(numNodes / sqrt2);
        if (numNodes < 2) {
          error('At least 2 nodes are required for Karger-Stein algorithm');
          return undefined;
        }

        // Now store edge destination as indexes
        // Format for each edge (edge index, source node index, target node index)
        var edgeIndexes = [];
        for (var i = 0; i < numEdges; i++) {
          var e = edges[i];
          edgeIndexes.push([i, nodes.indexOf(e.source()), nodes.indexOf(e.target())]);
        }

        // We will store the best cut found here
        var minCutSize = Infinity;
        var minCutEdgeIndexes = [];
        var minCutNodeMap = new Array(numNodes);

        // Initial meta node partition
        var metaNodeMap = new Array(numNodes);
        var metaNodeMap2 = new Array(numNodes);
        var copyNodesMap = function copyNodesMap(from, to) {
          for (var _i3 = 0; _i3 < numNodes; _i3++) {
            to[_i3] = from[_i3];
          }
        };

        // Main loop
        for (var iter = 0; iter <= numIter; iter++) {
          // Reset meta node partition
          for (var _i4 = 0; _i4 < numNodes; _i4++) {
            metaNodeMap[_i4] = _i4;
          }

          // Contract until stop point (stopSize nodes)
          var edgesState = contractUntil(metaNodeMap, edgeIndexes.slice(), numNodes, stopSize);
          var edgesState2 = edgesState.slice(); // copy

          // Create a copy of the colapsed nodes state
          copyNodesMap(metaNodeMap, metaNodeMap2);

          // Run 2 iterations starting in the stop state
          var res1 = contractUntil(metaNodeMap, edgesState, stopSize, 2);
          var res2 = contractUntil(metaNodeMap2, edgesState2, stopSize, 2);

          // Is any of the 2 results the best cut so far?
          if (res1.length <= res2.length && res1.length < minCutSize) {
            minCutSize = res1.length;
            minCutEdgeIndexes = res1;
            copyNodesMap(metaNodeMap, minCutNodeMap);
          } else if (res2.length <= res1.length && res2.length < minCutSize) {
            minCutSize = res2.length;
            minCutEdgeIndexes = res2;
            copyNodesMap(metaNodeMap2, minCutNodeMap);
          }
        } // end of main loop

        // Construct result
        var cut = this.spawn(minCutEdgeIndexes.map(function (e) {
          return edges[e[0]];
        }));
        var partition1 = this.spawn();
        var partition2 = this.spawn();

        // traverse metaNodeMap for best cut
        var witnessNodePartition = minCutNodeMap[0];
        for (var _i5 = 0; _i5 < minCutNodeMap.length; _i5++) {
          var partitionId = minCutNodeMap[_i5];
          var node = nodes[_i5];
          if (partitionId === witnessNodePartition) {
            partition1.merge(node);
          } else {
            partition2.merge(node);
          }
        }

        // construct components corresponding to each disjoint subset of nodes
        var constructComponent = function constructComponent(subset) {
          var component = _this.spawn();
          subset.forEach(function (node) {
            component.merge(node);
            node.connectedEdges().forEach(function (edge) {
              // ensure edge is within calling collection and edge is not in cut
              if (_this.contains(edge) && !cut.contains(edge)) {
                component.merge(edge);
              }
            });
          });
          return component;
        };
        var components = [constructComponent(partition1), constructComponent(partition2)];
        var ret = {
          cut: cut,
          components: components,
          // n.b. partitions are included to be compatible with the old api spec
          // (could be removed in a future major version)
          partition1: partition1,
          partition2: partition2
        };
        return ret;
      }
    }; // elesfn

    var copyPosition = function copyPosition(p) {
      return {
        x: p.x,
        y: p.y
      };
    };
    var modelToRenderedPosition = function modelToRenderedPosition(p, zoom, pan) {
      return {
        x: p.x * zoom + pan.x,
        y: p.y * zoom + pan.y
      };
    };
    var renderedToModelPosition = function renderedToModelPosition(p, zoom, pan) {
      return {
        x: (p.x - pan.x) / zoom,
        y: (p.y - pan.y) / zoom
      };
    };
    var array2point = function array2point(arr) {
      return {
        x: arr[0],
        y: arr[1]
      };
    };
    var min = function min(arr) {
      var begin = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
      var end = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : arr.length;
      var min = Infinity;
      for (var i = begin; i < end; i++) {
        var val = arr[i];
        if (isFinite(val)) {
          min = Math.min(val, min);
        }
      }
      return min;
    };
    var max = function max(arr) {
      var begin = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
      var end = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : arr.length;
      var max = -Infinity;
      for (var i = begin; i < end; i++) {
        var val = arr[i];
        if (isFinite(val)) {
          max = Math.max(val, max);
        }
      }
      return max;
    };
    var mean = function mean(arr) {
      var begin = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
      var end = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : arr.length;
      var total = 0;
      var n = 0;
      for (var i = begin; i < end; i++) {
        var val = arr[i];
        if (isFinite(val)) {
          total += val;
          n++;
        }
      }
      return total / n;
    };
    var median = function median(arr) {
      var begin = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
      var end = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : arr.length;
      var copy = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : true;
      var sort = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : true;
      var includeHoles = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : true;
      if (copy) {
        arr = arr.slice(begin, end);
      } else {
        if (end < arr.length) {
          arr.splice(end, arr.length - end);
        }
        if (begin > 0) {
          arr.splice(0, begin);
        }
      }

      // all non finite (e.g. Infinity, NaN) elements must be -Infinity so they go to the start
      var off = 0; // offset from non-finite values
      for (var i = arr.length - 1; i >= 0; i--) {
        var v = arr[i];
        if (includeHoles) {
          if (!isFinite(v)) {
            arr[i] = -Infinity;
            off++;
          }
        } else {
          // just remove it if we don't want to consider holes
          arr.splice(i, 1);
        }
      }
      if (sort) {
        arr.sort(function (a, b) {
          return a - b;
        }); // requires copy = true if you don't want to change the orig
      }

      var len = arr.length;
      var mid = Math.floor(len / 2);
      if (len % 2 !== 0) {
        return arr[mid + 1 + off];
      } else {
        return (arr[mid - 1 + off] + arr[mid + off]) / 2;
      }
    };
    var deg2rad = function deg2rad(deg) {
      return Math.PI * deg / 180;
    };
    var getAngleFromDisp = function getAngleFromDisp(dispX, dispY) {
      return Math.atan2(dispY, dispX) - Math.PI / 2;
    };
    var log2 = Math.log2 || function (n) {
      return Math.log(n) / Math.log(2);
    };
    var signum = function signum(x) {
      if (x > 0) {
        return 1;
      } else if (x < 0) {
        return -1;
      } else {
        return 0;
      }
    };
    var dist = function dist(p1, p2) {
      return Math.sqrt(sqdist(p1, p2));
    };
    var sqdist = function sqdist(p1, p2) {
      var dx = p2.x - p1.x;
      var dy = p2.y - p1.y;
      return dx * dx + dy * dy;
    };
    var inPlaceSumNormalize = function inPlaceSumNormalize(v) {
      var length = v.length;

      // First, get sum of all elements
      var total = 0;
      for (var i = 0; i < length; i++) {
        total += v[i];
      }

      // Now, divide each by the sum of all elements
      for (var _i = 0; _i < length; _i++) {
        v[_i] = v[_i] / total;
      }
      return v;
    };

    // from http://en.wikipedia.org/wiki/Bézier_curve#Quadratic_curves
    var qbezierAt = function qbezierAt(p0, p1, p2, t) {
      return (1 - t) * (1 - t) * p0 + 2 * (1 - t) * t * p1 + t * t * p2;
    };
    var qbezierPtAt = function qbezierPtAt(p0, p1, p2, t) {
      return {
        x: qbezierAt(p0.x, p1.x, p2.x, t),
        y: qbezierAt(p0.y, p1.y, p2.y, t)
      };
    };
    var lineAt = function lineAt(p0, p1, t, d) {
      var vec = {
        x: p1.x - p0.x,
        y: p1.y - p0.y
      };
      var vecDist = dist(p0, p1);
      var normVec = {
        x: vec.x / vecDist,
        y: vec.y / vecDist
      };
      t = t == null ? 0 : t;
      d = d != null ? d : t * vecDist;
      return {
        x: p0.x + normVec.x * d,
        y: p0.y + normVec.y * d
      };
    };
    var bound = function bound(min, val, max) {
      return Math.max(min, Math.min(max, val));
    };

    // makes a full bb (x1, y1, x2, y2, w, h) from implicit params
    var makeBoundingBox = function makeBoundingBox(bb) {
      if (bb == null) {
        return {
          x1: Infinity,
          y1: Infinity,
          x2: -Infinity,
          y2: -Infinity,
          w: 0,
          h: 0
        };
      } else if (bb.x1 != null && bb.y1 != null) {
        if (bb.x2 != null && bb.y2 != null && bb.x2 >= bb.x1 && bb.y2 >= bb.y1) {
          return {
            x1: bb.x1,
            y1: bb.y1,
            x2: bb.x2,
            y2: bb.y2,
            w: bb.x2 - bb.x1,
            h: bb.y2 - bb.y1
          };
        } else if (bb.w != null && bb.h != null && bb.w >= 0 && bb.h >= 0) {
          return {
            x1: bb.x1,
            y1: bb.y1,
            x2: bb.x1 + bb.w,
            y2: bb.y1 + bb.h,
            w: bb.w,
            h: bb.h
          };
        }
      }
    };
    var copyBoundingBox = function copyBoundingBox(bb) {
      return {
        x1: bb.x1,
        x2: bb.x2,
        w: bb.w,
        y1: bb.y1,
        y2: bb.y2,
        h: bb.h
      };
    };
    var clearBoundingBox = function clearBoundingBox(bb) {
      bb.x1 = Infinity;
      bb.y1 = Infinity;
      bb.x2 = -Infinity;
      bb.y2 = -Infinity;
      bb.w = 0;
      bb.h = 0;
    };
    var shiftBoundingBox = function shiftBoundingBox(bb, dx, dy) {
      return {
        x1: bb.x1 + dx,
        x2: bb.x2 + dx,
        y1: bb.y1 + dy,
        y2: bb.y2 + dy,
        w: bb.w,
        h: bb.h
      };
    };
    var updateBoundingBox = function updateBoundingBox(bb1, bb2) {
      // update bb1 with bb2 bounds

      bb1.x1 = Math.min(bb1.x1, bb2.x1);
      bb1.x2 = Math.max(bb1.x2, bb2.x2);
      bb1.w = bb1.x2 - bb1.x1;
      bb1.y1 = Math.min(bb1.y1, bb2.y1);
      bb1.y2 = Math.max(bb1.y2, bb2.y2);
      bb1.h = bb1.y2 - bb1.y1;
    };
    var expandBoundingBoxByPoint = function expandBoundingBoxByPoint(bb, x, y) {
      bb.x1 = Math.min(bb.x1, x);
      bb.x2 = Math.max(bb.x2, x);
      bb.w = bb.x2 - bb.x1;
      bb.y1 = Math.min(bb.y1, y);
      bb.y2 = Math.max(bb.y2, y);
      bb.h = bb.y2 - bb.y1;
    };
    var expandBoundingBox = function expandBoundingBox(bb) {
      var padding = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
      bb.x1 -= padding;
      bb.x2 += padding;
      bb.y1 -= padding;
      bb.y2 += padding;
      bb.w = bb.x2 - bb.x1;
      bb.h = bb.y2 - bb.y1;
      return bb;
    };
    var expandBoundingBoxSides = function expandBoundingBoxSides(bb) {
      var padding = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [0];
      var top, right, bottom, left;
      if (padding.length === 1) {
        top = right = bottom = left = padding[0];
      } else if (padding.length === 2) {
        top = bottom = padding[0];
        left = right = padding[1];
      } else if (padding.length === 4) {
        var _padding = _slicedToArray(padding, 4);
        top = _padding[0];
        right = _padding[1];
        bottom = _padding[2];
        left = _padding[3];
      }
      bb.x1 -= left;
      bb.x2 += right;
      bb.y1 -= top;
      bb.y2 += bottom;
      bb.w = bb.x2 - bb.x1;
      bb.h = bb.y2 - bb.y1;
      return bb;
    };

    // assign the values of bb2 into bb1
    var assignBoundingBox = function assignBoundingBox(bb1, bb2) {
      bb1.x1 = bb2.x1;
      bb1.y1 = bb2.y1;
      bb1.x2 = bb2.x2;
      bb1.y2 = bb2.y2;
      bb1.w = bb1.x2 - bb1.x1;
      bb1.h = bb1.y2 - bb1.y1;
    };
    var boundingBoxesIntersect = function boundingBoxesIntersect(bb1, bb2) {
      // case: one bb to right of other
      if (bb1.x1 > bb2.x2) {
        return false;
      }
      if (bb2.x1 > bb1.x2) {
        return false;
      }

      // case: one bb to left of other
      if (bb1.x2 < bb2.x1) {
        return false;
      }
      if (bb2.x2 < bb1.x1) {
        return false;
      }

      // case: one bb above other
      if (bb1.y2 < bb2.y1) {
        return false;
      }
      if (bb2.y2 < bb1.y1) {
        return false;
      }

      // case: one bb below other
      if (bb1.y1 > bb2.y2) {
        return false;
      }
      if (bb2.y1 > bb1.y2) {
        return false;
      }

      // otherwise, must have some overlap
      return true;
    };
    var inBoundingBox = function inBoundingBox(bb, x, y) {
      return bb.x1 <= x && x <= bb.x2 && bb.y1 <= y && y <= bb.y2;
    };
    var pointInBoundingBox = function pointInBoundingBox(bb, pt) {
      return inBoundingBox(bb, pt.x, pt.y);
    };
    var boundingBoxInBoundingBox = function boundingBoxInBoundingBox(bb1, bb2) {
      return inBoundingBox(bb1, bb2.x1, bb2.y1) && inBoundingBox(bb1, bb2.x2, bb2.y2);
    };
    var roundRectangleIntersectLine = function roundRectangleIntersectLine(x, y, nodeX, nodeY, width, height, padding) {
      var radius = arguments.length > 7 && arguments[7] !== undefined ? arguments[7] : 'auto';
      var cornerRadius = radius === 'auto' ? getRoundRectangleRadius(width, height) : radius;
      var halfWidth = width / 2;
      var halfHeight = height / 2;
      cornerRadius = Math.min(cornerRadius, halfWidth, halfHeight);
      var doWidth = cornerRadius !== halfWidth,
        doHeight = cornerRadius !== halfHeight;

      // Check intersections with straight line segments
      var straightLineIntersections;

      // Top segment, left to right
      if (doWidth) {
        var topStartX = nodeX - halfWidth + cornerRadius - padding;
        var topStartY = nodeY - halfHeight - padding;
        var topEndX = nodeX + halfWidth - cornerRadius + padding;
        var topEndY = topStartY;
        straightLineIntersections = finiteLinesIntersect(x, y, nodeX, nodeY, topStartX, topStartY, topEndX, topEndY, false);
        if (straightLineIntersections.length > 0) {
          return straightLineIntersections;
        }
      }

      // Right segment, top to bottom
      if (doHeight) {
        var rightStartX = nodeX + halfWidth + padding;
        var rightStartY = nodeY - halfHeight + cornerRadius - padding;
        var rightEndX = rightStartX;
        var rightEndY = nodeY + halfHeight - cornerRadius + padding;
        straightLineIntersections = finiteLinesIntersect(x, y, nodeX, nodeY, rightStartX, rightStartY, rightEndX, rightEndY, false);
        if (straightLineIntersections.length > 0) {
          return straightLineIntersections;
        }
      }

      // Bottom segment, left to right
      if (doWidth) {
        var bottomStartX = nodeX - halfWidth + cornerRadius - padding;
        var bottomStartY = nodeY + halfHeight + padding;
        var bottomEndX = nodeX + halfWidth - cornerRadius + padding;
        var bottomEndY = bottomStartY;
        straightLineIntersections = finiteLinesIntersect(x, y, nodeX, nodeY, bottomStartX, bottomStartY, bottomEndX, bottomEndY, false);
        if (straightLineIntersections.length > 0) {
          return straightLineIntersections;
        }
      }

      // Left segment, top to bottom
      if (doHeight) {
        var leftStartX = nodeX - halfWidth - padding;
        var leftStartY = nodeY - halfHeight + cornerRadius - padding;
        var leftEndX = leftStartX;
        var leftEndY = nodeY + halfHeight - cornerRadius + padding;
        straightLineIntersections = finiteLinesIntersect(x, y, nodeX, nodeY, leftStartX, leftStartY, leftEndX, leftEndY, false);
        if (straightLineIntersections.length > 0) {
          return straightLineIntersections;
        }
      }

      // Check intersections with arc segments
      var arcIntersections;

      // Top Left
      {
        var topLeftCenterX = nodeX - halfWidth + cornerRadius;
        var topLeftCenterY = nodeY - halfHeight + cornerRadius;
        arcIntersections = intersectLineCircle(x, y, nodeX, nodeY, topLeftCenterX, topLeftCenterY, cornerRadius + padding);

        // Ensure the intersection is on the desired quarter of the circle
        if (arcIntersections.length > 0 && arcIntersections[0] <= topLeftCenterX && arcIntersections[1] <= topLeftCenterY) {
          return [arcIntersections[0], arcIntersections[1]];
        }
      }

      // Top Right
      {
        var topRightCenterX = nodeX + halfWidth - cornerRadius;
        var topRightCenterY = nodeY - halfHeight + cornerRadius;
        arcIntersections = intersectLineCircle(x, y, nodeX, nodeY, topRightCenterX, topRightCenterY, cornerRadius + padding);

        // Ensure the intersection is on the desired quarter of the circle
        if (arcIntersections.length > 0 && arcIntersections[0] >= topRightCenterX && arcIntersections[1] <= topRightCenterY) {
          return [arcIntersections[0], arcIntersections[1]];
        }
      }

      // Bottom Right
      {
        var bottomRightCenterX = nodeX + halfWidth - cornerRadius;
        var bottomRightCenterY = nodeY + halfHeight - cornerRadius;
        arcIntersections = intersectLineCircle(x, y, nodeX, nodeY, bottomRightCenterX, bottomRightCenterY, cornerRadius + padding);

        // Ensure the intersection is on the desired quarter of the circle
        if (arcIntersections.length > 0 && arcIntersections[0] >= bottomRightCenterX && arcIntersections[1] >= bottomRightCenterY) {
          return [arcIntersections[0], arcIntersections[1]];
        }
      }

      // Bottom Left
      {
        var bottomLeftCenterX = nodeX - halfWidth + cornerRadius;
        var bottomLeftCenterY = nodeY + halfHeight - cornerRadius;
        arcIntersections = intersectLineCircle(x, y, nodeX, nodeY, bottomLeftCenterX, bottomLeftCenterY, cornerRadius + padding);

        // Ensure the intersection is on the desired quarter of the circle
        if (arcIntersections.length > 0 && arcIntersections[0] <= bottomLeftCenterX && arcIntersections[1] >= bottomLeftCenterY) {
          return [arcIntersections[0], arcIntersections[1]];
        }
      }
      return []; // if nothing
    };

    var inLineVicinity = function inLineVicinity(x, y, lx1, ly1, lx2, ly2, tolerance) {
      var t = tolerance;
      var x1 = Math.min(lx1, lx2);
      var x2 = Math.max(lx1, lx2);
      var y1 = Math.min(ly1, ly2);
      var y2 = Math.max(ly1, ly2);
      return x1 - t <= x && x <= x2 + t && y1 - t <= y && y <= y2 + t;
    };
    var inBezierVicinity = function inBezierVicinity(x, y, x1, y1, x2, y2, x3, y3, tolerance) {
      var bb = {
        x1: Math.min(x1, x3, x2) - tolerance,
        x2: Math.max(x1, x3, x2) + tolerance,
        y1: Math.min(y1, y3, y2) - tolerance,
        y2: Math.max(y1, y3, y2) + tolerance
      };

      // if outside the rough bounding box for the bezier, then it can't be a hit
      if (x < bb.x1 || x > bb.x2 || y < bb.y1 || y > bb.y2) {
        // console.log('bezier out of rough bb')
        return false;
      } else {
        // console.log('do more expensive check');
        return true;
      }
    };
    var solveQuadratic = function solveQuadratic(a, b, c, val) {
      c -= val;
      var r = b * b - 4 * a * c;
      if (r < 0) {
        return [];
      }
      var sqrtR = Math.sqrt(r);
      var denom = 2 * a;
      var root1 = (-b + sqrtR) / denom;
      var root2 = (-b - sqrtR) / denom;
      return [root1, root2];
    };
    var solveCubic = function solveCubic(a, b, c, d, result) {
      // Solves a cubic function, returns root in form [r1, i1, r2, i2, r3, i3], where
      // r is the real component, i is the imaginary component

      // An implementation of the Cardano method from the year 1545
      // http://en.wikipedia.org/wiki/Cubic_function#The_nature_of_the_roots

      var epsilon = 0.00001;

      // avoid division by zero while keeping the overall expression close in value
      if (a === 0) {
        a = epsilon;
      }
      b /= a;
      c /= a;
      d /= a;
      var discriminant, q, r, dum1, s, t, term1, r13;
      q = (3.0 * c - b * b) / 9.0;
      r = -(27.0 * d) + b * (9.0 * c - 2.0 * (b * b));
      r /= 54.0;
      discriminant = q * q * q + r * r;
      result[1] = 0;
      term1 = b / 3.0;
      if (discriminant > 0) {
        s = r + Math.sqrt(discriminant);
        s = s < 0 ? -Math.pow(-s, 1.0 / 3.0) : Math.pow(s, 1.0 / 3.0);
        t = r - Math.sqrt(discriminant);
        t = t < 0 ? -Math.pow(-t, 1.0 / 3.0) : Math.pow(t, 1.0 / 3.0);
        result[0] = -term1 + s + t;
        term1 += (s + t) / 2.0;
        result[4] = result[2] = -term1;
        term1 = Math.sqrt(3.0) * (-t + s) / 2;
        result[3] = term1;
        result[5] = -term1;
        return;
      }
      result[5] = result[3] = 0;
      if (discriminant === 0) {
        r13 = r < 0 ? -Math.pow(-r, 1.0 / 3.0) : Math.pow(r, 1.0 / 3.0);
        result[0] = -term1 + 2.0 * r13;
        result[4] = result[2] = -(r13 + term1);
        return;
      }
      q = -q;
      dum1 = q * q * q;
      dum1 = Math.acos(r / Math.sqrt(dum1));
      r13 = 2.0 * Math.sqrt(q);
      result[0] = -term1 + r13 * Math.cos(dum1 / 3.0);
      result[2] = -term1 + r13 * Math.cos((dum1 + 2.0 * Math.PI) / 3.0);
      result[4] = -term1 + r13 * Math.cos((dum1 + 4.0 * Math.PI) / 3.0);
      return;
    };
    var sqdistToQuadraticBezier = function sqdistToQuadraticBezier(x, y, x1, y1, x2, y2, x3, y3) {
      // Find minimum distance by using the minimum of the distance
      // function between the given point and the curve

      // This gives the coefficients of the resulting cubic equation
      // whose roots tell us where a possible minimum is
      // (Coefficients are divided by 4)

      var a = 1.0 * x1 * x1 - 4 * x1 * x2 + 2 * x1 * x3 + 4 * x2 * x2 - 4 * x2 * x3 + x3 * x3 + y1 * y1 - 4 * y1 * y2 + 2 * y1 * y3 + 4 * y2 * y2 - 4 * y2 * y3 + y3 * y3;
      var b = 1.0 * 9 * x1 * x2 - 3 * x1 * x1 - 3 * x1 * x3 - 6 * x2 * x2 + 3 * x2 * x3 + 9 * y1 * y2 - 3 * y1 * y1 - 3 * y1 * y3 - 6 * y2 * y2 + 3 * y2 * y3;
      var c = 1.0 * 3 * x1 * x1 - 6 * x1 * x2 + x1 * x3 - x1 * x + 2 * x2 * x2 + 2 * x2 * x - x3 * x + 3 * y1 * y1 - 6 * y1 * y2 + y1 * y3 - y1 * y + 2 * y2 * y2 + 2 * y2 * y - y3 * y;
      var d = 1.0 * x1 * x2 - x1 * x1 + x1 * x - x2 * x + y1 * y2 - y1 * y1 + y1 * y - y2 * y;

      // debug("coefficients: " + a / a + ", " + b / a + ", " + c / a + ", " + d / a);

      var roots = [];

      // Use the cubic solving algorithm
      solveCubic(a, b, c, d, roots);
      var zeroThreshold = 0.0000001;
      var params = [];
      for (var index = 0; index < 6; index += 2) {
        if (Math.abs(roots[index + 1]) < zeroThreshold && roots[index] >= 0 && roots[index] <= 1.0) {
          params.push(roots[index]);
        }
      }
      params.push(1.0);
      params.push(0.0);
      var minDistanceSquared = -1;
      var curX, curY, distSquared;
      for (var i = 0; i < params.length; i++) {
        curX = Math.pow(1.0 - params[i], 2.0) * x1 + 2.0 * (1 - params[i]) * params[i] * x2 + params[i] * params[i] * x3;
        curY = Math.pow(1 - params[i], 2.0) * y1 + 2 * (1.0 - params[i]) * params[i] * y2 + params[i] * params[i] * y3;
        distSquared = Math.pow(curX - x, 2) + Math.pow(curY - y, 2);
        // debug('distance for param ' + params[i] + ": " + Math.sqrt(distSquared));
        if (minDistanceSquared >= 0) {
          if (distSquared < minDistanceSquared) {
            minDistanceSquared = distSquared;
          }
        } else {
          minDistanceSquared = distSquared;
        }
      }
      return minDistanceSquared;
    };
    var sqdistToFiniteLine = function sqdistToFiniteLine(x, y, x1, y1, x2, y2) {
      var offset = [x - x1, y - y1];
      var line = [x2 - x1, y2 - y1];
      var lineSq = line[0] * line[0] + line[1] * line[1];
      var hypSq = offset[0] * offset[0] + offset[1] * offset[1];
      var dotProduct = offset[0] * line[0] + offset[1] * line[1];
      var adjSq = dotProduct * dotProduct / lineSq;
      if (dotProduct < 0) {
        return hypSq;
      }
      if (adjSq > lineSq) {
        return (x - x2) * (x - x2) + (y - y2) * (y - y2);
      }
      return hypSq - adjSq;
    };
    var pointInsidePolygonPoints = function pointInsidePolygonPoints(x, y, points) {
      var x1, y1, x2, y2;
      var y3;

      // Intersect with vertical line through (x, y)
      var up = 0;
      // let down = 0;
      for (var i = 0; i < points.length / 2; i++) {
        x1 = points[i * 2];
        y1 = points[i * 2 + 1];
        if (i + 1 < points.length / 2) {
          x2 = points[(i + 1) * 2];
          y2 = points[(i + 1) * 2 + 1];
        } else {
          x2 = points[(i + 1 - points.length / 2) * 2];
          y2 = points[(i + 1 - points.length / 2) * 2 + 1];
        }
        if (x1 == x && x2 == x) ; else if (x1 >= x && x >= x2 || x1 <= x && x <= x2) {
          y3 = (x - x1) / (x2 - x1) * (y2 - y1) + y1;
          if (y3 > y) {
            up++;
          }

          // if( y3 < y ){
          // down++;
          // }
        } else {
          continue;
        }
      }
      if (up % 2 === 0) {
        return false;
      } else {
        return true;
      }
    };
    var pointInsidePolygon = function pointInsidePolygon(x, y, basePoints, centerX, centerY, width, height, direction, padding) {
      var transformedPoints = new Array(basePoints.length);

      // Gives negative angle
      var angle;
      if (direction[0] != null) {
        angle = Math.atan(direction[1] / direction[0]);
        if (direction[0] < 0) {
          angle = angle + Math.PI / 2;
        } else {
          angle = -angle - Math.PI / 2;
        }
      } else {
        angle = direction;
      }
      var cos = Math.cos(-angle);
      var sin = Math.sin(-angle);

      //    console.log("base: " + basePoints);
      for (var i = 0; i < transformedPoints.length / 2; i++) {
        transformedPoints[i * 2] = width / 2 * (basePoints[i * 2] * cos - basePoints[i * 2 + 1] * sin);
        transformedPoints[i * 2 + 1] = height / 2 * (basePoints[i * 2 + 1] * cos + basePoints[i * 2] * sin);
        transformedPoints[i * 2] += centerX;
        transformedPoints[i * 2 + 1] += centerY;
      }
      var points;
      if (padding > 0) {
        var expandedLineSet = expandPolygon(transformedPoints, -padding);
        points = joinLines(expandedLineSet);
      } else {
        points = transformedPoints;
      }
      return pointInsidePolygonPoints(x, y, points);
    };
    var pointInsideRoundPolygon = function pointInsideRoundPolygon(x, y, basePoints, centerX, centerY, width, height, corners) {
      var cutPolygonPoints = new Array(basePoints.length * 2);
      for (var i = 0; i < corners.length; i++) {
        var corner = corners[i];
        cutPolygonPoints[i * 4 + 0] = corner.startX;
        cutPolygonPoints[i * 4 + 1] = corner.startY;
        cutPolygonPoints[i * 4 + 2] = corner.stopX;
        cutPolygonPoints[i * 4 + 3] = corner.stopY;
        var squaredDistance = Math.pow(corner.cx - x, 2) + Math.pow(corner.cy - y, 2);
        if (squaredDistance <= Math.pow(corner.radius, 2)) {
          return true;
        }
      }
      return pointInsidePolygonPoints(x, y, cutPolygonPoints);
    };
    var joinLines = function joinLines(lineSet) {
      var vertices = new Array(lineSet.length / 2);
      var currentLineStartX, currentLineStartY, currentLineEndX, currentLineEndY;
      var nextLineStartX, nextLineStartY, nextLineEndX, nextLineEndY;
      for (var i = 0; i < lineSet.length / 4; i++) {
        currentLineStartX = lineSet[i * 4];
        currentLineStartY = lineSet[i * 4 + 1];
        currentLineEndX = lineSet[i * 4 + 2];
        currentLineEndY = lineSet[i * 4 + 3];
        if (i < lineSet.length / 4 - 1) {
          nextLineStartX = lineSet[(i + 1) * 4];
          nextLineStartY = lineSet[(i + 1) * 4 + 1];
          nextLineEndX = lineSet[(i + 1) * 4 + 2];
          nextLineEndY = lineSet[(i + 1) * 4 + 3];
        } else {
          nextLineStartX = lineSet[0];
          nextLineStartY = lineSet[1];
          nextLineEndX = lineSet[2];
          nextLineEndY = lineSet[3];
        }
        var intersection = finiteLinesIntersect(currentLineStartX, currentLineStartY, currentLineEndX, currentLineEndY, nextLineStartX, nextLineStartY, nextLineEndX, nextLineEndY, true);
        vertices[i * 2] = intersection[0];
        vertices[i * 2 + 1] = intersection[1];
      }
      return vertices;
    };
    var expandPolygon = function expandPolygon(points, pad) {
      var expandedLineSet = new Array(points.length * 2);
      var currentPointX, currentPointY, nextPointX, nextPointY;
      for (var i = 0; i < points.length / 2; i++) {
        currentPointX = points[i * 2];
        currentPointY = points[i * 2 + 1];
        if (i < points.length / 2 - 1) {
          nextPointX = points[(i + 1) * 2];
          nextPointY = points[(i + 1) * 2 + 1];
        } else {
          nextPointX = points[0];
          nextPointY = points[1];
        }

        // Current line: [currentPointX, currentPointY] to [nextPointX, nextPointY]

        // Assume CCW polygon winding

        var offsetX = nextPointY - currentPointY;
        var offsetY = -(nextPointX - currentPointX);

        // Normalize
        var offsetLength = Math.sqrt(offsetX * offsetX + offsetY * offsetY);
        var normalizedOffsetX = offsetX / offsetLength;
        var normalizedOffsetY = offsetY / offsetLength;
        expandedLineSet[i * 4] = currentPointX + normalizedOffsetX * pad;
        expandedLineSet[i * 4 + 1] = currentPointY + normalizedOffsetY * pad;
        expandedLineSet[i * 4 + 2] = nextPointX + normalizedOffsetX * pad;
        expandedLineSet[i * 4 + 3] = nextPointY + normalizedOffsetY * pad;
      }
      return expandedLineSet;
    };
    var intersectLineEllipse = function intersectLineEllipse(x, y, centerX, centerY, ellipseWradius, ellipseHradius) {
      var dispX = centerX - x;
      var dispY = centerY - y;
      dispX /= ellipseWradius;
      dispY /= ellipseHradius;
      var len = Math.sqrt(dispX * dispX + dispY * dispY);
      var newLength = len - 1;
      if (newLength < 0) {
        return [];
      }
      var lenProportion = newLength / len;
      return [(centerX - x) * lenProportion + x, (centerY - y) * lenProportion + y];
    };
    var checkInEllipse = function checkInEllipse(x, y, width, height, centerX, centerY, padding) {
      x -= centerX;
      y -= centerY;
      x /= width / 2 + padding;
      y /= height / 2 + padding;
      return x * x + y * y <= 1;
    };

    // Returns intersections of increasing distance from line's start point
    var intersectLineCircle = function intersectLineCircle(x1, y1, x2, y2, centerX, centerY, radius) {
      // Calculate d, direction vector of line
      var d = [x2 - x1, y2 - y1]; // Direction vector of line
      var f = [x1 - centerX, y1 - centerY];
      var a = d[0] * d[0] + d[1] * d[1];
      var b = 2 * (f[0] * d[0] + f[1] * d[1]);
      var c = f[0] * f[0] + f[1] * f[1] - radius * radius;
      var discriminant = b * b - 4 * a * c;
      if (discriminant < 0) {
        return [];
      }
      var t1 = (-b + Math.sqrt(discriminant)) / (2 * a);
      var t2 = (-b - Math.sqrt(discriminant)) / (2 * a);
      var tMin = Math.min(t1, t2);
      var tMax = Math.max(t1, t2);
      var inRangeParams = [];
      if (tMin >= 0 && tMin <= 1) {
        inRangeParams.push(tMin);
      }
      if (tMax >= 0 && tMax <= 1) {
        inRangeParams.push(tMax);
      }
      if (inRangeParams.length === 0) {
        return [];
      }
      var nearIntersectionX = inRangeParams[0] * d[0] + x1;
      var nearIntersectionY = inRangeParams[0] * d[1] + y1;
      if (inRangeParams.length > 1) {
        if (inRangeParams[0] == inRangeParams[1]) {
          return [nearIntersectionX, nearIntersectionY];
        } else {
          var farIntersectionX = inRangeParams[1] * d[0] + x1;
          var farIntersectionY = inRangeParams[1] * d[1] + y1;
          return [nearIntersectionX, nearIntersectionY, farIntersectionX, farIntersectionY];
        }
      } else {
        return [nearIntersectionX, nearIntersectionY];
      }
    };
    var midOfThree = function midOfThree(a, b, c) {
      if (b <= a && a <= c || c <= a && a <= b) {
        return a;
      } else if (a <= b && b <= c || c <= b && b <= a) {
        return b;
      } else {
        return c;
      }
    };

    // (x1,y1)=>(x2,y2) intersect with (x3,y3)=>(x4,y4)
    var finiteLinesIntersect = function finiteLinesIntersect(x1, y1, x2, y2, x3, y3, x4, y4, infiniteLines) {
      var dx13 = x1 - x3;
      var dx21 = x2 - x1;
      var dx43 = x4 - x3;
      var dy13 = y1 - y3;
      var dy21 = y2 - y1;
      var dy43 = y4 - y3;
      var ua_t = dx43 * dy13 - dy43 * dx13;
      var ub_t = dx21 * dy13 - dy21 * dx13;
      var u_b = dy43 * dx21 - dx43 * dy21;
      if (u_b !== 0) {
        var ua = ua_t / u_b;
        var ub = ub_t / u_b;
        var flptThreshold = 0.001;
        var _min = 0 - flptThreshold;
        var _max = 1 + flptThreshold;
        if (_min <= ua && ua <= _max && _min <= ub && ub <= _max) {
          return [x1 + ua * dx21, y1 + ua * dy21];
        } else {
          if (!infiniteLines) {
            return [];
          } else {
            return [x1 + ua * dx21, y1 + ua * dy21];
          }
        }
      } else {
        if (ua_t === 0 || ub_t === 0) {
          // Parallel, coincident lines. Check if overlap

          // Check endpoint of second line
          if (midOfThree(x1, x2, x4) === x4) {
            return [x4, y4];
          }

          // Check start point of second line
          if (midOfThree(x1, x2, x3) === x3) {
            return [x3, y3];
          }

          // Endpoint of first line
          if (midOfThree(x3, x4, x2) === x2) {
            return [x2, y2];
          }
          return [];
        } else {
          // Parallel, non-coincident
          return [];
        }
      }
    };

    // math.polygonIntersectLine( x, y, basePoints, centerX, centerY, width, height, padding )
    // intersect a node polygon (pts transformed)
    //
    // math.polygonIntersectLine( x, y, basePoints, centerX, centerY )
    // intersect the points (no transform)
    var polygonIntersectLine = function polygonIntersectLine(x, y, basePoints, centerX, centerY, width, height, padding) {
      var intersections = [];
      var intersection;
      var transformedPoints = new Array(basePoints.length);
      var doTransform = true;
      if (width == null) {
        doTransform = false;
      }
      var points;
      if (doTransform) {
        for (var i = 0; i < transformedPoints.length / 2; i++) {
          transformedPoints[i * 2] = basePoints[i * 2] * width + centerX;
          transformedPoints[i * 2 + 1] = basePoints[i * 2 + 1] * height + centerY;
        }
        if (padding > 0) {
          var expandedLineSet = expandPolygon(transformedPoints, -padding);
          points = joinLines(expandedLineSet);
        } else {
          points = transformedPoints;
        }
      } else {
        points = basePoints;
      }
      var currentX, currentY, nextX, nextY;
      for (var _i2 = 0; _i2 < points.length / 2; _i2++) {
        currentX = points[_i2 * 2];
        currentY = points[_i2 * 2 + 1];
        if (_i2 < points.length / 2 - 1) {
          nextX = points[(_i2 + 1) * 2];
          nextY = points[(_i2 + 1) * 2 + 1];
        } else {
          nextX = points[0];
          nextY = points[1];
        }
        intersection = finiteLinesIntersect(x, y, centerX, centerY, currentX, currentY, nextX, nextY);
        if (intersection.length !== 0) {
          intersections.push(intersection[0], intersection[1]);
        }
      }
      return intersections;
    };
    var roundPolygonIntersectLine = function roundPolygonIntersectLine(x, y, basePoints, centerX, centerY, width, height, padding, corners) {
      var intersections = [];
      var intersection;
      var lines = new Array(basePoints.length * 2);
      corners.forEach(function (corner, i) {
        if (i === 0) {
          lines[lines.length - 2] = corner.startX;
          lines[lines.length - 1] = corner.startY;
        } else {
          lines[i * 4 - 2] = corner.startX;
          lines[i * 4 - 1] = corner.startY;
        }
        lines[i * 4] = corner.stopX;
        lines[i * 4 + 1] = corner.stopY;
        intersection = intersectLineCircle(x, y, centerX, centerY, corner.cx, corner.cy, corner.radius);
        if (intersection.length !== 0) {
          intersections.push(intersection[0], intersection[1]);
        }
      });
      for (var i = 0; i < lines.length / 4; i++) {
        intersection = finiteLinesIntersect(x, y, centerX, centerY, lines[i * 4], lines[i * 4 + 1], lines[i * 4 + 2], lines[i * 4 + 3], false);
        if (intersection.length !== 0) {
          intersections.push(intersection[0], intersection[1]);
        }
      }
      if (intersections.length > 2) {
        var lowestIntersection = [intersections[0], intersections[1]];
        var lowestSquaredDistance = Math.pow(lowestIntersection[0] - x, 2) + Math.pow(lowestIntersection[1] - y, 2);
        for (var _i3 = 1; _i3 < intersections.length / 2; _i3++) {
          var squaredDistance = Math.pow(intersections[_i3 * 2] - x, 2) + Math.pow(intersections[_i3 * 2 + 1] - y, 2);
          if (squaredDistance <= lowestSquaredDistance) {
            lowestIntersection[0] = intersections[_i3 * 2];
            lowestIntersection[1] = intersections[_i3 * 2 + 1];
            lowestSquaredDistance = squaredDistance;
          }
        }
        return lowestIntersection;
      }
      return intersections;
    };
    var shortenIntersection = function shortenIntersection(intersection, offset, amount) {
      var disp = [intersection[0] - offset[0], intersection[1] - offset[1]];
      var length = Math.sqrt(disp[0] * disp[0] + disp[1] * disp[1]);
      var lenRatio = (length - amount) / length;
      if (lenRatio < 0) {
        lenRatio = 0.00001;
      }
      return [offset[0] + lenRatio * disp[0], offset[1] + lenRatio * disp[1]];
    };
    var generateUnitNgonPointsFitToSquare = function generateUnitNgonPointsFitToSquare(sides, rotationRadians) {
      var points = generateUnitNgonPoints(sides, rotationRadians);
      points = fitPolygonToSquare(points);
      return points;
    };
    var fitPolygonToSquare = function fitPolygonToSquare(points) {
      var x, y;
      var sides = points.length / 2;
      var minX = Infinity,
        minY = Infinity,
        maxX = -Infinity,
        maxY = -Infinity;
      for (var i = 0; i < sides; i++) {
        x = points[2 * i];
        y = points[2 * i + 1];
        minX = Math.min(minX, x);
        maxX = Math.max(maxX, x);
        minY = Math.min(minY, y);
        maxY = Math.max(maxY, y);
      }

      // stretch factors
      var sx = 2 / (maxX - minX);
      var sy = 2 / (maxY - minY);
      for (var _i4 = 0; _i4 < sides; _i4++) {
        x = points[2 * _i4] = points[2 * _i4] * sx;
        y = points[2 * _i4 + 1] = points[2 * _i4 + 1] * sy;
        minX = Math.min(minX, x);
        maxX = Math.max(maxX, x);
        minY = Math.min(minY, y);
        maxY = Math.max(maxY, y);
      }
      if (minY < -1) {
        for (var _i5 = 0; _i5 < sides; _i5++) {
          y = points[2 * _i5 + 1] = points[2 * _i5 + 1] + (-1 - minY);
        }
      }
      return points;
    };
    var generateUnitNgonPoints = function generateUnitNgonPoints(sides, rotationRadians) {
      var increment = 1.0 / sides * 2 * Math.PI;
      var startAngle = sides % 2 === 0 ? Math.PI / 2.0 + increment / 2.0 : Math.PI / 2.0;
      startAngle += rotationRadians;
      var points = new Array(sides * 2);
      var currentAngle;
      for (var i = 0; i < sides; i++) {
        currentAngle = i * increment + startAngle;
        points[2 * i] = Math.cos(currentAngle); // x
        points[2 * i + 1] = Math.sin(-currentAngle); // y
      }

      return points;
    };

    // Set the default radius, unless half of width or height is smaller than default
    var getRoundRectangleRadius = function getRoundRectangleRadius(width, height) {
      return Math.min(width / 4, height / 4, 8);
    };

    // Set the default radius
    var getRoundPolygonRadius = function getRoundPolygonRadius(width, height) {
      return Math.min(width / 10, height / 10, 8);
    };
    var getCutRectangleCornerLength = function getCutRectangleCornerLength() {
      return 8;
    };
    var bezierPtsToQuadCoeff = function bezierPtsToQuadCoeff(p0, p1, p2) {
      return [p0 - 2 * p1 + p2, 2 * (p1 - p0), p0];
    };

    // get curve width, height, and control point position offsets as a percentage of node height / width
    var getBarrelCurveConstants = function getBarrelCurveConstants(width, height) {
      return {
        heightOffset: Math.min(15, 0.05 * height),
        widthOffset: Math.min(100, 0.25 * width),
        ctrlPtOffsetPct: 0.05
      };
    };

    var pageRankDefaults = defaults$g({
      dampingFactor: 0.8,
      precision: 0.000001,
      iterations: 200,
      weight: function weight(edge) {
        return 1;
      }
    });
    var elesfn$o = {
      pageRank: function pageRank(options) {
        var _pageRankDefaults = pageRankDefaults(options),
          dampingFactor = _pageRankDefaults.dampingFactor,
          precision = _pageRankDefaults.precision,
          iterations = _pageRankDefaults.iterations,
          weight = _pageRankDefaults.weight;
        var cy = this._private.cy;
        var _this$byGroup = this.byGroup(),
          nodes = _this$byGroup.nodes,
          edges = _this$byGroup.edges;
        var numNodes = nodes.length;
        var numNodesSqd = numNodes * numNodes;
        var numEdges = edges.length;

        // Construct transposed adjacency matrix
        // First lets have a zeroed matrix of the right size
        // We'll also keep track of the sum of each column
        var matrix = new Array(numNodesSqd);
        var columnSum = new Array(numNodes);
        var additionalProb = (1 - dampingFactor) / numNodes;

        // Create null matrix
        for (var i = 0; i < numNodes; i++) {
          for (var j = 0; j < numNodes; j++) {
            var n = i * numNodes + j;
            matrix[n] = 0;
          }
          columnSum[i] = 0;
        }

        // Now, process edges
        for (var _i = 0; _i < numEdges; _i++) {
          var edge = edges[_i];
          var srcId = edge.data('source');
          var tgtId = edge.data('target');

          // Don't include loops in the matrix
          if (srcId === tgtId) {
            continue;
          }
          var s = nodes.indexOfId(srcId);
          var t = nodes.indexOfId(tgtId);
          var w = weight(edge);
          var _n = t * numNodes + s;

          // Update matrix
          matrix[_n] += w;

          // Update column sum
          columnSum[s] += w;
        }

        // Add additional probability based on damping factor
        // Also, take into account columns that have sum = 0
        var p = 1.0 / numNodes + additionalProb; // Shorthand

        // Traverse matrix, column by column
        for (var _j = 0; _j < numNodes; _j++) {
          if (columnSum[_j] === 0) {
            // No 'links' out from node jth, assume equal probability for each possible node
            for (var _i2 = 0; _i2 < numNodes; _i2++) {
              var _n2 = _i2 * numNodes + _j;
              matrix[_n2] = p;
            }
          } else {
            // Node jth has outgoing link, compute normalized probabilities
            for (var _i3 = 0; _i3 < numNodes; _i3++) {
              var _n3 = _i3 * numNodes + _j;
              matrix[_n3] = matrix[_n3] / columnSum[_j] + additionalProb;
            }
          }
        }

        // Compute dominant eigenvector using power method
        var eigenvector = new Array(numNodes);
        var temp = new Array(numNodes);
        var previous;

        // Start with a vector of all 1's
        // Also, initialize a null vector which will be used as shorthand
        for (var _i4 = 0; _i4 < numNodes; _i4++) {
          eigenvector[_i4] = 1;
        }
        for (var iter = 0; iter < iterations; iter++) {
          // Temp array with all 0's
          for (var _i5 = 0; _i5 < numNodes; _i5++) {
            temp[_i5] = 0;
          }

          // Multiply matrix with previous result
          for (var _i6 = 0; _i6 < numNodes; _i6++) {
            for (var _j2 = 0; _j2 < numNodes; _j2++) {
              var _n4 = _i6 * numNodes + _j2;
              temp[_i6] += matrix[_n4] * eigenvector[_j2];
            }
          }
          inPlaceSumNormalize(temp);
          previous = eigenvector;
          eigenvector = temp;
          temp = previous;
          var diff = 0;
          // Compute difference (squared module) of both vectors
          for (var _i7 = 0; _i7 < numNodes; _i7++) {
            var delta = previous[_i7] - eigenvector[_i7];
            diff += delta * delta;
          }

          // If difference is less than the desired threshold, stop iterating
          if (diff < precision) {
            break;
          }
        }

        // Construct result
        var res = {
          rank: function rank(node) {
            node = cy.collection(node)[0];
            return eigenvector[nodes.indexOf(node)];
          }
        };
        return res;
      } // pageRank
    }; // elesfn

    var defaults$f = defaults$g({
      root: null,
      weight: function weight(edge) {
        return 1;
      },
      directed: false,
      alpha: 0
    });
    var elesfn$n = {
      degreeCentralityNormalized: function degreeCentralityNormalized(options) {
        options = defaults$f(options);
        var cy = this.cy();
        var nodes = this.nodes();
        var numNodes = nodes.length;
        if (!options.directed) {
          var degrees = {};
          var maxDegree = 0;
          for (var i = 0; i < numNodes; i++) {
            var node = nodes[i];

            // add current node to the current options object and call degreeCentrality
            options.root = node;
            var currDegree = this.degreeCentrality(options);
            if (maxDegree < currDegree.degree) {
              maxDegree = currDegree.degree;
            }
            degrees[node.id()] = currDegree.degree;
          }
          return {
            degree: function degree(node) {
              if (maxDegree === 0) {
                return 0;
              }
              if (string(node)) {
                // from is a selector string
                node = cy.filter(node);
              }
              return degrees[node.id()] / maxDegree;
            }
          };
        } else {
          var indegrees = {};
          var outdegrees = {};
          var maxIndegree = 0;
          var maxOutdegree = 0;
          for (var _i = 0; _i < numNodes; _i++) {
            var _node = nodes[_i];
            var id = _node.id();

            // add current node to the current options object and call degreeCentrality
            options.root = _node;
            var _currDegree = this.degreeCentrality(options);
            if (maxIndegree < _currDegree.indegree) maxIndegree = _currDegree.indegree;
            if (maxOutdegree < _currDegree.outdegree) maxOutdegree = _currDegree.outdegree;
            indegrees[id] = _currDegree.indegree;
            outdegrees[id] = _currDegree.outdegree;
          }
          return {
            indegree: function indegree(node) {
              if (maxIndegree == 0) {
                return 0;
              }
              if (string(node)) {
                // from is a selector string
                node = cy.filter(node);
              }
              return indegrees[node.id()] / maxIndegree;
            },
            outdegree: function outdegree(node) {
              if (maxOutdegree === 0) {
                return 0;
              }
              if (string(node)) {
                // from is a selector string
                node = cy.filter(node);
              }
              return outdegrees[node.id()] / maxOutdegree;
            }
          };
        }
      },
      // degreeCentralityNormalized

      // Implemented from the algorithm in Opsahl's paper
      // "Node centrality in weighted networks: Generalizing degree and shortest paths"
      // check the heading 2 "Degree"
      degreeCentrality: function degreeCentrality(options) {
        options = defaults$f(options);
        var cy = this.cy();
        var callingEles = this;
        var _options = options,
          root = _options.root,
          weight = _options.weight,
          directed = _options.directed,
          alpha = _options.alpha;
        root = cy.collection(root)[0];
        if (!directed) {
          var connEdges = root.connectedEdges().intersection(callingEles);
          var k = connEdges.length;
          var s = 0;

          // Now, sum edge weights
          for (var i = 0; i < connEdges.length; i++) {
            s += weight(connEdges[i]);
          }
          return {
            degree: Math.pow(k, 1 - alpha) * Math.pow(s, alpha)
          };
        } else {
          var edges = root.connectedEdges();
          var incoming = edges.filter(function (edge) {
            return edge.target().same(root) && callingEles.has(edge);
          });
          var outgoing = edges.filter(function (edge) {
            return edge.source().same(root) && callingEles.has(edge);
          });
          var k_in = incoming.length;
          var k_out = outgoing.length;
          var s_in = 0;
          var s_out = 0;

          // Now, sum incoming edge weights
          for (var _i2 = 0; _i2 < incoming.length; _i2++) {
            s_in += weight(incoming[_i2]);
          }

          // Now, sum outgoing edge weights
          for (var _i3 = 0; _i3 < outgoing.length; _i3++) {
            s_out += weight(outgoing[_i3]);
          }
          return {
            indegree: Math.pow(k_in, 1 - alpha) * Math.pow(s_in, alpha),
            outdegree: Math.pow(k_out, 1 - alpha) * Math.pow(s_out, alpha)
          };
        }
      } // degreeCentrality
    }; // elesfn

    // nice, short mathematical alias
    elesfn$n.dc = elesfn$n.degreeCentrality;
    elesfn$n.dcn = elesfn$n.degreeCentralityNormalised = elesfn$n.degreeCentralityNormalized;

    var defaults$e = defaults$g({
      harmonic: true,
      weight: function weight() {
        return 1;
      },
      directed: false,
      root: null
    });
    var elesfn$m = {
      closenessCentralityNormalized: function closenessCentralityNormalized(options) {
        var _defaults = defaults$e(options),
          harmonic = _defaults.harmonic,
          weight = _defaults.weight,
          directed = _defaults.directed;
        var cy = this.cy();
        var closenesses = {};
        var maxCloseness = 0;
        var nodes = this.nodes();
        var fw = this.floydWarshall({
          weight: weight,
          directed: directed
        });

        // Compute closeness for every node and find the maximum closeness
        for (var i = 0; i < nodes.length; i++) {
          var currCloseness = 0;
          var node_i = nodes[i];
          for (var j = 0; j < nodes.length; j++) {
            if (i !== j) {
              var d = fw.distance(node_i, nodes[j]);
              if (harmonic) {
                currCloseness += 1 / d;
              } else {
                currCloseness += d;
              }
            }
          }
          if (!harmonic) {
            currCloseness = 1 / currCloseness;
          }
          if (maxCloseness < currCloseness) {
            maxCloseness = currCloseness;
          }
          closenesses[node_i.id()] = currCloseness;
        }
        return {
          closeness: function closeness(node) {
            if (maxCloseness == 0) {
              return 0;
            }
            if (string(node)) {
              // from is a selector string
              node = cy.filter(node)[0].id();
            } else {
              // from is a node
              node = node.id();
            }
            return closenesses[node] / maxCloseness;
          }
        };
      },
      // Implemented from pseudocode from wikipedia
      closenessCentrality: function closenessCentrality(options) {
        var _defaults2 = defaults$e(options),
          root = _defaults2.root,
          weight = _defaults2.weight,
          directed = _defaults2.directed,
          harmonic = _defaults2.harmonic;
        root = this.filter(root)[0];

        // we need distance from this node to every other node
        var dijkstra = this.dijkstra({
          root: root,
          weight: weight,
          directed: directed
        });
        var totalDistance = 0;
        var nodes = this.nodes();
        for (var i = 0; i < nodes.length; i++) {
          var n = nodes[i];
          if (!n.same(root)) {
            var d = dijkstra.distanceTo(n);
            if (harmonic) {
              totalDistance += 1 / d;
            } else {
              totalDistance += d;
            }
          }
        }
        return harmonic ? totalDistance : 1 / totalDistance;
      } // closenessCentrality
    }; // elesfn

    // nice, short mathematical alias
    elesfn$m.cc = elesfn$m.closenessCentrality;
    elesfn$m.ccn = elesfn$m.closenessCentralityNormalised = elesfn$m.closenessCentralityNormalized;

    var defaults$d = defaults$g({
      weight: null,
      directed: false
    });
    var elesfn$l = {
      // Implemented from the algorithm in the paper "On Variants of Shortest-Path Betweenness Centrality and their Generic Computation" by Ulrik Brandes
      betweennessCentrality: function betweennessCentrality(options) {
        var _defaults = defaults$d(options),
          directed = _defaults.directed,
          weight = _defaults.weight;
        var weighted = weight != null;
        var cy = this.cy();

        // starting
        var V = this.nodes();
        var A = {};
        var _C = {};
        var max = 0;
        var C = {
          set: function set(key, val) {
            _C[key] = val;
            if (val > max) {
              max = val;
            }
          },
          get: function get(key) {
            return _C[key];
          }
        };

        // A contains the neighborhoods of every node
        for (var i = 0; i < V.length; i++) {
          var v = V[i];
          var vid = v.id();
          if (directed) {
            A[vid] = v.outgoers().nodes(); // get outgoers of every node
          } else {
            A[vid] = v.openNeighborhood().nodes(); // get neighbors of every node
          }

          C.set(vid, 0);
        }
        var _loop = function _loop(s) {
          var sid = V[s].id();
          var S = []; // stack
          var P = {};
          var g = {};
          var d = {};
          var Q = new heap(function (a, b) {
            return d[a] - d[b];
          }); // queue

          // init dictionaries
          for (var _i = 0; _i < V.length; _i++) {
            var _vid = V[_i].id();
            P[_vid] = [];
            g[_vid] = 0;
            d[_vid] = Infinity;
          }
          g[sid] = 1; // sigma
          d[sid] = 0; // distance to s

          Q.push(sid);
          while (!Q.empty()) {
            var _v = Q.pop();
            S.push(_v);
            if (weighted) {
              for (var j = 0; j < A[_v].length; j++) {
                var w = A[_v][j];
                var vEle = cy.getElementById(_v);
                var edge = void 0;
                if (vEle.edgesTo(w).length > 0) {
                  edge = vEle.edgesTo(w)[0];
                } else {
                  edge = w.edgesTo(vEle)[0];
                }
                var edgeWeight = weight(edge);
                w = w.id();
                if (d[w] > d[_v] + edgeWeight) {
                  d[w] = d[_v] + edgeWeight;
                  if (Q.nodes.indexOf(w) < 0) {
                    //if w is not in Q
                    Q.push(w);
                  } else {
                    // update position if w is in Q
                    Q.updateItem(w);
                  }
                  g[w] = 0;
                  P[w] = [];
                }
                if (d[w] == d[_v] + edgeWeight) {
                  g[w] = g[w] + g[_v];
                  P[w].push(_v);
                }
              }
            } else {
              for (var _j = 0; _j < A[_v].length; _j++) {
                var _w = A[_v][_j].id();
                if (d[_w] == Infinity) {
                  Q.push(_w);
                  d[_w] = d[_v] + 1;
                }
                if (d[_w] == d[_v] + 1) {
                  g[_w] = g[_w] + g[_v];
                  P[_w].push(_v);
                }
              }
            }
          }
          var e = {};
          for (var _i2 = 0; _i2 < V.length; _i2++) {
            e[V[_i2].id()] = 0;
          }
          while (S.length > 0) {
            var _w2 = S.pop();
            for (var _j2 = 0; _j2 < P[_w2].length; _j2++) {
              var _v2 = P[_w2][_j2];
              e[_v2] = e[_v2] + g[_v2] / g[_w2] * (1 + e[_w2]);
            }
            if (_w2 != V[s].id()) {
              C.set(_w2, C.get(_w2) + e[_w2]);
            }
          }
        };
        for (var s = 0; s < V.length; s++) {
          _loop(s);
        }
        var ret = {
          betweenness: function betweenness(node) {
            var id = cy.collection(node).id();
            return C.get(id);
          },
          betweennessNormalized: function betweennessNormalized(node) {
            if (max == 0) {
              return 0;
            }
            var id = cy.collection(node).id();
            return C.get(id) / max;
          }
        };

        // alias
        ret.betweennessNormalised = ret.betweennessNormalized;
        return ret;
      } // betweennessCentrality
    }; // elesfn

    // nice, short mathematical alias
    elesfn$l.bc = elesfn$l.betweennessCentrality;

    // Implemented by Zoe Xi @zoexi for GSOC 2016

    /* eslint-disable no-unused-vars */
    var defaults$c = defaults$g({
      expandFactor: 2,
      // affects time of computation and cluster granularity to some extent: M * M
      inflateFactor: 2,
      // affects cluster granularity (the greater the value, the more clusters): M(i,j) / E(j)
      multFactor: 1,
      // optional self loops for each node. Use a neutral value to improve cluster computations.
      maxIterations: 20,
      // maximum number of iterations of the MCL algorithm in a single run
      attributes: [
      // attributes/features used to group nodes, ie. similarity values between nodes
      function (edge) {
        return 1;
      }]
    });
    /* eslint-enable */

    var setOptions$3 = function setOptions(options) {
      return defaults$c(options);
    };
    /* eslint-enable */

    var getSimilarity$1 = function getSimilarity(edge, attributes) {
      var total = 0;
      for (var i = 0; i < attributes.length; i++) {
        total += attributes[i](edge);
      }
      return total;
    };
    var addLoops = function addLoops(M, n, val) {
      for (var i = 0; i < n; i++) {
        M[i * n + i] = val;
      }
    };
    var normalize$1 = function normalize(M, n) {
      var sum;
      for (var col = 0; col < n; col++) {
        sum = 0;
        for (var row = 0; row < n; row++) {
          sum += M[row * n + col];
        }
        for (var _row = 0; _row < n; _row++) {
          M[_row * n + col] = M[_row * n + col] / sum;
        }
      }
    };

    // TODO: blocked matrix multiplication?
    var mmult = function mmult(A, B, n) {
      var C = new Array(n * n);
      for (var i = 0; i < n; i++) {
        for (var j = 0; j < n; j++) {
          C[i * n + j] = 0;
        }
        for (var k = 0; k < n; k++) {
          for (var _j = 0; _j < n; _j++) {
            C[i * n + _j] += A[i * n + k] * B[k * n + _j];
          }
        }
      }
      return C;
    };
    var expand = function expand(M, n, expandFactor /** power **/) {
      var _M = M.slice(0);
      for (var p = 1; p < expandFactor; p++) {
        M = mmult(M, _M, n);
      }
      return M;
    };
    var inflate = function inflate(M, n, inflateFactor /** r **/) {
      var _M = new Array(n * n);

      // M(i,j) ^ inflatePower
      for (var i = 0; i < n * n; i++) {
        _M[i] = Math.pow(M[i], inflateFactor);
      }
      normalize$1(_M, n);
      return _M;
    };
    var hasConverged = function hasConverged(M, _M, n2, roundFactor) {
      // Check that both matrices have the same elements (i,j)
      for (var i = 0; i < n2; i++) {
        var v1 = Math.round(M[i] * Math.pow(10, roundFactor)) / Math.pow(10, roundFactor); // truncate to 'roundFactor' decimal places
        var v2 = Math.round(_M[i] * Math.pow(10, roundFactor)) / Math.pow(10, roundFactor);
        if (v1 !== v2) {
          return false;
        }
      }
      return true;
    };
    var assign$2 = function assign(M, n, nodes, cy) {
      var clusters = [];
      for (var i = 0; i < n; i++) {
        var cluster = [];
        for (var j = 0; j < n; j++) {
          // Row-wise attractors and elements that they attract belong in same cluster
          if (Math.round(M[i * n + j] * 1000) / 1000 > 0) {
            cluster.push(nodes[j]);
          }
        }
        if (cluster.length !== 0) {
          clusters.push(cy.collection(cluster));
        }
      }
      return clusters;
    };
    var isDuplicate = function isDuplicate(c1, c2) {
      for (var i = 0; i < c1.length; i++) {
        if (!c2[i] || c1[i].id() !== c2[i].id()) {
          return false;
        }
      }
      return true;
    };
    var removeDuplicates = function removeDuplicates(clusters) {
      for (var i = 0; i < clusters.length; i++) {
        for (var j = 0; j < clusters.length; j++) {
          if (i != j && isDuplicate(clusters[i], clusters[j])) {
            clusters.splice(j, 1);
          }
        }
      }
      return clusters;
    };
    var markovClustering = function markovClustering(options) {
      var nodes = this.nodes();
      var edges = this.edges();
      var cy = this.cy();

      // Set parameters of algorithm:
      var opts = setOptions$3(options);

      // Map each node to its position in node array
      var id2position = {};
      for (var i = 0; i < nodes.length; i++) {
        id2position[nodes[i].id()] = i;
      }

      // Generate stochastic matrix M from input graph G (should be symmetric/undirected)
      var n = nodes.length,
        n2 = n * n;
      var M = new Array(n2),
        _M;
      for (var _i = 0; _i < n2; _i++) {
        M[_i] = 0;
      }
      for (var e = 0; e < edges.length; e++) {
        var edge = edges[e];
        var _i2 = id2position[edge.source().id()];
        var j = id2position[edge.target().id()];
        var sim = getSimilarity$1(edge, opts.attributes);
        M[_i2 * n + j] += sim; // G should be symmetric and undirected
        M[j * n + _i2] += sim;
      }

      // Begin Markov cluster algorithm

      // Step 1: Add self loops to each node, ie. add multFactor to matrix diagonal
      addLoops(M, n, opts.multFactor);

      // Step 2: M = normalize( M );
      normalize$1(M, n);
      var isStillMoving = true;
      var iterations = 0;
      while (isStillMoving && iterations < opts.maxIterations) {
        isStillMoving = false;

        // Step 3:
        _M = expand(M, n, opts.expandFactor);

        // Step 4:
        M = inflate(_M, n, opts.inflateFactor);

        // Step 5: check to see if ~steady state has been reached
        if (!hasConverged(M, _M, n2, 4)) {
          isStillMoving = true;
        }
        iterations++;
      }

      // Build clusters from matrix
      var clusters = assign$2(M, n, nodes, cy);

      // Remove duplicate clusters due to symmetry of graph and M matrix
      clusters = removeDuplicates(clusters);
      return clusters;
    };
    var markovClustering$1 = {
      markovClustering: markovClustering,
      mcl: markovClustering
    };

    // Common distance metrics for clustering algorithms
    var identity = function identity(x) {
      return x;
    };
    var absDiff = function absDiff(p, q) {
      return Math.abs(q - p);
    };
    var addAbsDiff = function addAbsDiff(total, p, q) {
      return total + absDiff(p, q);
    };
    var addSquaredDiff = function addSquaredDiff(total, p, q) {
      return total + Math.pow(q - p, 2);
    };
    var sqrt = function sqrt(x) {
      return Math.sqrt(x);
    };
    var maxAbsDiff = function maxAbsDiff(currentMax, p, q) {
      return Math.max(currentMax, absDiff(p, q));
    };
    var getDistance = function getDistance(length, getP, getQ, init, visit) {
      var post = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : identity;
      var ret = init;
      var p, q;
      for (var dim = 0; dim < length; dim++) {
        p = getP(dim);
        q = getQ(dim);
        ret = visit(ret, p, q);
      }
      return post(ret);
    };
    var distances = {
      euclidean: function euclidean(length, getP, getQ) {
        if (length >= 2) {
          return getDistance(length, getP, getQ, 0, addSquaredDiff, sqrt);
        } else {
          // for single attr case, more efficient to avoid sqrt
          return getDistance(length, getP, getQ, 0, addAbsDiff);
        }
      },
      squaredEuclidean: function squaredEuclidean(length, getP, getQ) {
        return getDistance(length, getP, getQ, 0, addSquaredDiff);
      },
      manhattan: function manhattan(length, getP, getQ) {
        return getDistance(length, getP, getQ, 0, addAbsDiff);
      },
      max: function max(length, getP, getQ) {
        return getDistance(length, getP, getQ, -Infinity, maxAbsDiff);
      }
    };

    // in case the user accidentally doesn't use camel case
    distances['squared-euclidean'] = distances['squaredEuclidean'];
    distances['squaredeuclidean'] = distances['squaredEuclidean'];
    function clusteringDistance (method, length, getP, getQ, nodeP, nodeQ) {
      var impl;
      if (fn$6(method)) {
        impl = method;
      } else {
        impl = distances[method] || distances.euclidean;
      }
      if (length === 0 && fn$6(method)) {
        return impl(nodeP, nodeQ);
      } else {
        return impl(length, getP, getQ, nodeP, nodeQ);
      }
    }

    var defaults$b = defaults$g({
      k: 2,
      m: 2,
      sensitivityThreshold: 0.0001,
      distance: 'euclidean',
      maxIterations: 10,
      attributes: [],
      testMode: false,
      testCentroids: null
    });
    var setOptions$2 = function setOptions(options) {
      return defaults$b(options);
    };

    var getDist = function getDist(type, node, centroid, attributes, mode) {
      var noNodeP = mode !== 'kMedoids';
      var getP = noNodeP ? function (i) {
        return centroid[i];
      } : function (i) {
        return attributes[i](centroid);
      };
      var getQ = function getQ(i) {
        return attributes[i](node);
      };
      var nodeP = centroid;
      var nodeQ = node;
      return clusteringDistance(type, attributes.length, getP, getQ, nodeP, nodeQ);
    };
    var randomCentroids = function randomCentroids(nodes, k, attributes) {
      var ndim = attributes.length;
      var min = new Array(ndim);
      var max = new Array(ndim);
      var centroids = new Array(k);
      var centroid = null;

      // Find min, max values for each attribute dimension
      for (var i = 0; i < ndim; i++) {
        min[i] = nodes.min(attributes[i]).value;
        max[i] = nodes.max(attributes[i]).value;
      }

      // Build k centroids, each represented as an n-dim feature vector
      for (var c = 0; c < k; c++) {
        centroid = [];
        for (var _i = 0; _i < ndim; _i++) {
          centroid[_i] = Math.random() * (max[_i] - min[_i]) + min[_i]; // random initial value
        }

        centroids[c] = centroid;
      }
      return centroids;
    };
    var classify = function classify(node, centroids, distance, attributes, type) {
      var min = Infinity;
      var index = 0;
      for (var i = 0; i < centroids.length; i++) {
        var dist = getDist(distance, node, centroids[i], attributes, type);
        if (dist < min) {
          min = dist;
          index = i;
        }
      }
      return index;
    };
    var buildCluster = function buildCluster(centroid, nodes, assignment) {
      var cluster = [];
      var node = null;
      for (var n = 0; n < nodes.length; n++) {
        node = nodes[n];
        if (assignment[node.id()] === centroid) {
          //console.log("Node " + node.id() + " is associated with medoid #: " + m);
          cluster.push(node);
        }
      }
      return cluster;
    };
    var haveValuesConverged = function haveValuesConverged(v1, v2, sensitivityThreshold) {
      return Math.abs(v2 - v1) <= sensitivityThreshold;
    };
    var haveMatricesConverged = function haveMatricesConverged(v1, v2, sensitivityThreshold) {
      for (var i = 0; i < v1.length; i++) {
        for (var j = 0; j < v1[i].length; j++) {
          var diff = Math.abs(v1[i][j] - v2[i][j]);
          if (diff > sensitivityThreshold) {
            return false;
          }
        }
      }
      return true;
    };
    var seenBefore = function seenBefore(node, medoids, n) {
      for (var i = 0; i < n; i++) {
        if (node === medoids[i]) return true;
      }
      return false;
    };
    var randomMedoids = function randomMedoids(nodes, k) {
      var medoids = new Array(k);

      // For small data sets, the probability of medoid conflict is greater,
      // so we need to check to see if we've already seen or chose this node before.
      if (nodes.length < 50) {
        // Randomly select k medoids from the n nodes
        for (var i = 0; i < k; i++) {
          var node = nodes[Math.floor(Math.random() * nodes.length)];

          // If we've already chosen this node to be a medoid, don't choose it again (for small data sets).
          // Instead choose a different random node.
          while (seenBefore(node, medoids, i)) {
            node = nodes[Math.floor(Math.random() * nodes.length)];
          }
          medoids[i] = node;
        }
      } else {
        // Relatively large data set, so pretty safe to not check and just select random nodes
        for (var _i2 = 0; _i2 < k; _i2++) {
          medoids[_i2] = nodes[Math.floor(Math.random() * nodes.length)];
        }
      }
      return medoids;
    };
    var findCost = function findCost(potentialNewMedoid, cluster, attributes) {
      var cost = 0;
      for (var n = 0; n < cluster.length; n++) {
        cost += getDist('manhattan', cluster[n], potentialNewMedoid, attributes, 'kMedoids');
      }
      return cost;
    };
    var kMeans = function kMeans(options) {
      var cy = this.cy();
      var nodes = this.nodes();
      var node = null;

      // Set parameters of algorithm: # of clusters, distance metric, etc.
      var opts = setOptions$2(options);

      // Begin k-means algorithm
      var clusters = new Array(opts.k);
      var assignment = {};
      var centroids;

      // Step 1: Initialize centroid positions
      if (opts.testMode) {
        if (typeof opts.testCentroids === 'number') {
          // TODO: implement a seeded random number generator.
          opts.testCentroids;
          centroids = randomCentroids(nodes, opts.k, opts.attributes);
        } else if (_typeof(opts.testCentroids) === 'object') {
          centroids = opts.testCentroids;
        } else {
          centroids = randomCentroids(nodes, opts.k, opts.attributes);
        }
      } else {
        centroids = randomCentroids(nodes, opts.k, opts.attributes);
      }
      var isStillMoving = true;
      var iterations = 0;
      while (isStillMoving && iterations < opts.maxIterations) {
        // Step 2: Assign nodes to the nearest centroid
        for (var n = 0; n < nodes.length; n++) {
          node = nodes[n];
          // Determine which cluster this node belongs to: node id => cluster #
          assignment[node.id()] = classify(node, centroids, opts.distance, opts.attributes, 'kMeans');
        }

        // Step 3: For each of the k clusters, update its centroid
        isStillMoving = false;
        for (var c = 0; c < opts.k; c++) {
          // Get all nodes that belong to this cluster
          var cluster = buildCluster(c, nodes, assignment);
          if (cluster.length === 0) {
            // If cluster is empty, break out early & move to next cluster
            continue;
          }

          // Update centroids by calculating avg of all nodes within the cluster.
          var ndim = opts.attributes.length;
          var centroid = centroids[c]; // [ dim_1, dim_2, dim_3, ... , dim_n ]
          var newCentroid = new Array(ndim);
          var sum = new Array(ndim);
          for (var d = 0; d < ndim; d++) {
            sum[d] = 0.0;
            for (var i = 0; i < cluster.length; i++) {
              node = cluster[i];
              sum[d] += opts.attributes[d](node);
            }
            newCentroid[d] = sum[d] / cluster.length;

            // Check to see if algorithm has converged, i.e. when centroids no longer change
            if (!haveValuesConverged(newCentroid[d], centroid[d], opts.sensitivityThreshold)) {
              isStillMoving = true;
            }
          }
          centroids[c] = newCentroid;
          clusters[c] = cy.collection(cluster);
        }
        iterations++;
      }
      return clusters;
    };
    var kMedoids = function kMedoids(options) {
      var cy = this.cy();
      var nodes = this.nodes();
      var node = null;
      var opts = setOptions$2(options);

      // Begin k-medoids algorithm
      var clusters = new Array(opts.k);
      var medoids;
      var assignment = {};
      var curCost;
      var minCosts = new Array(opts.k); // minimum cost configuration for each cluster

      // Step 1: Initialize k medoids
      if (opts.testMode) {
        if (typeof opts.testCentroids === 'number') ; else if (_typeof(opts.testCentroids) === 'object') {
          medoids = opts.testCentroids;
        } else {
          medoids = randomMedoids(nodes, opts.k);
        }
      } else {
        medoids = randomMedoids(nodes, opts.k);
      }
      var isStillMoving = true;
      var iterations = 0;
      while (isStillMoving && iterations < opts.maxIterations) {
        // Step 2: Assign nodes to the nearest medoid
        for (var n = 0; n < nodes.length; n++) {
          node = nodes[n];
          // Determine which cluster this node belongs to: node id => cluster #
          assignment[node.id()] = classify(node, medoids, opts.distance, opts.attributes, 'kMedoids');
        }
        isStillMoving = false;
        // Step 3: For each medoid m, and for each node associated with mediod m,
        // select the node with the lowest configuration cost as new medoid.
        for (var m = 0; m < medoids.length; m++) {
          // Get all nodes that belong to this medoid
          var cluster = buildCluster(m, nodes, assignment);
          if (cluster.length === 0) {
            // If cluster is empty, break out early & move to next cluster
            continue;
          }
          minCosts[m] = findCost(medoids[m], cluster, opts.attributes); // original cost

          // Select different medoid if its configuration has the lowest cost
          for (var _n = 0; _n < cluster.length; _n++) {
            curCost = findCost(cluster[_n], cluster, opts.attributes);
            if (curCost < minCosts[m]) {
              minCosts[m] = curCost;
              medoids[m] = cluster[_n];
              isStillMoving = true;
            }
          }
          clusters[m] = cy.collection(cluster);
        }
        iterations++;
      }
      return clusters;
    };
    var updateCentroids = function updateCentroids(centroids, nodes, U, weight, opts) {
      var numerator, denominator;
      for (var n = 0; n < nodes.length; n++) {
        for (var c = 0; c < centroids.length; c++) {
          weight[n][c] = Math.pow(U[n][c], opts.m);
        }
      }
      for (var _c = 0; _c < centroids.length; _c++) {
        for (var dim = 0; dim < opts.attributes.length; dim++) {
          numerator = 0;
          denominator = 0;
          for (var _n2 = 0; _n2 < nodes.length; _n2++) {
            numerator += weight[_n2][_c] * opts.attributes[dim](nodes[_n2]);
            denominator += weight[_n2][_c];
          }
          centroids[_c][dim] = numerator / denominator;
        }
      }
    };
    var updateMembership = function updateMembership(U, _U, centroids, nodes, opts) {
      // Save previous step
      for (var i = 0; i < U.length; i++) {
        _U[i] = U[i].slice();
      }
      var sum, numerator, denominator;
      var pow = 2 / (opts.m - 1);
      for (var c = 0; c < centroids.length; c++) {
        for (var n = 0; n < nodes.length; n++) {
          sum = 0;
          for (var k = 0; k < centroids.length; k++) {
            // against all other centroids
            numerator = getDist(opts.distance, nodes[n], centroids[c], opts.attributes, 'cmeans');
            denominator = getDist(opts.distance, nodes[n], centroids[k], opts.attributes, 'cmeans');
            sum += Math.pow(numerator / denominator, pow);
          }
          U[n][c] = 1 / sum;
        }
      }
    };
    var assign$1 = function assign(nodes, U, opts, cy) {
      var clusters = new Array(opts.k);
      for (var c = 0; c < clusters.length; c++) {
        clusters[c] = [];
      }
      var max;
      var index;
      for (var n = 0; n < U.length; n++) {
        // for each node (U is N x C matrix)
        max = -Infinity;
        index = -1;
        // Determine which cluster the node is most likely to belong in
        for (var _c2 = 0; _c2 < U[0].length; _c2++) {
          if (U[n][_c2] > max) {
            max = U[n][_c2];
            index = _c2;
          }
        }
        clusters[index].push(nodes[n]);
      }

      // Turn every array into a collection of nodes
      for (var _c3 = 0; _c3 < clusters.length; _c3++) {
        clusters[_c3] = cy.collection(clusters[_c3]);
      }
      return clusters;
    };
    var fuzzyCMeans = function fuzzyCMeans(options) {
      var cy = this.cy();
      var nodes = this.nodes();
      var opts = setOptions$2(options);

      // Begin fuzzy c-means algorithm
      var clusters;
      var centroids;
      var U;
      var _U;
      var weight;

      // Step 1: Initialize letiables.
      _U = new Array(nodes.length);
      for (var i = 0; i < nodes.length; i++) {
        // N x C matrix
        _U[i] = new Array(opts.k);
      }
      U = new Array(nodes.length);
      for (var _i3 = 0; _i3 < nodes.length; _i3++) {
        // N x C matrix
        U[_i3] = new Array(opts.k);
      }
      for (var _i4 = 0; _i4 < nodes.length; _i4++) {
        var total = 0;
        for (var j = 0; j < opts.k; j++) {
          U[_i4][j] = Math.random();
          total += U[_i4][j];
        }
        for (var _j = 0; _j < opts.k; _j++) {
          U[_i4][_j] = U[_i4][_j] / total;
        }
      }
      centroids = new Array(opts.k);
      for (var _i5 = 0; _i5 < opts.k; _i5++) {
        centroids[_i5] = new Array(opts.attributes.length);
      }
      weight = new Array(nodes.length);
      for (var _i6 = 0; _i6 < nodes.length; _i6++) {
        // N x C matrix
        weight[_i6] = new Array(opts.k);
      }
      // end init FCM

      var isStillMoving = true;
      var iterations = 0;
      while (isStillMoving && iterations < opts.maxIterations) {
        isStillMoving = false;

        // Step 2: Calculate the centroids for each step.
        updateCentroids(centroids, nodes, U, weight, opts);

        // Step 3: Update the partition matrix U.
        updateMembership(U, _U, centroids, nodes, opts);

        // Step 4: Check for convergence.
        if (!haveMatricesConverged(U, _U, opts.sensitivityThreshold)) {
          isStillMoving = true;
        }
        iterations++;
      }

      // Assign nodes to clusters with highest probability.
      clusters = assign$1(nodes, U, opts, cy);
      return {
        clusters: clusters,
        degreeOfMembership: U
      };
    };
    var kClustering = {
      kMeans: kMeans,
      kMedoids: kMedoids,
      fuzzyCMeans: fuzzyCMeans,
      fcm: fuzzyCMeans
    };

    // Implemented by Zoe Xi @zoexi for GSOC 2016
    var defaults$a = defaults$g({
      distance: 'euclidean',
      // distance metric to compare nodes
      linkage: 'min',
      // linkage criterion : how to determine the distance between clusters of nodes
      mode: 'threshold',
      // mode:'threshold' => clusters must be threshold distance apart
      threshold: Infinity,
      // the distance threshold
      // mode:'dendrogram' => the nodes are organised as leaves in a tree (siblings are close), merging makes clusters
      addDendrogram: false,
      // whether to add the dendrogram to the graph for viz
      dendrogramDepth: 0,
      // depth at which dendrogram branches are merged into the returned clusters
      attributes: [] // array of attr functions
    });

    var linkageAliases = {
      'single': 'min',
      'complete': 'max'
    };
    var setOptions$1 = function setOptions(options) {
      var opts = defaults$a(options);
      var preferredAlias = linkageAliases[opts.linkage];
      if (preferredAlias != null) {
        opts.linkage = preferredAlias;
      }
      return opts;
    };
    var mergeClosest = function mergeClosest(clusters, index, dists, mins, opts) {
      // Find two closest clusters from cached mins
      var minKey = 0;
      var min = Infinity;
      var dist;
      var attrs = opts.attributes;
      var getDist = function getDist(n1, n2) {
        return clusteringDistance(opts.distance, attrs.length, function (i) {
          return attrs[i](n1);
        }, function (i) {
          return attrs[i](n2);
        }, n1, n2);
      };
      for (var i = 0; i < clusters.length; i++) {
        var key = clusters[i].key;
        var _dist = dists[key][mins[key]];
        if (_dist < min) {
          minKey = key;
          min = _dist;
        }
      }
      if (opts.mode === 'threshold' && min >= opts.threshold || opts.mode === 'dendrogram' && clusters.length === 1) {
        return false;
      }
      var c1 = index[minKey];
      var c2 = index[mins[minKey]];
      var merged;

      // Merge two closest clusters
      if (opts.mode === 'dendrogram') {
        merged = {
          left: c1,
          right: c2,
          key: c1.key
        };
      } else {
        merged = {
          value: c1.value.concat(c2.value),
          key: c1.key
        };
      }
      clusters[c1.index] = merged;
      clusters.splice(c2.index, 1);
      index[c1.key] = merged;

      // Update distances with new merged cluster
      for (var _i = 0; _i < clusters.length; _i++) {
        var cur = clusters[_i];
        if (c1.key === cur.key) {
          dist = Infinity;
        } else if (opts.linkage === 'min') {
          dist = dists[c1.key][cur.key];
          if (dists[c1.key][cur.key] > dists[c2.key][cur.key]) {
            dist = dists[c2.key][cur.key];
          }
        } else if (opts.linkage === 'max') {
          dist = dists[c1.key][cur.key];
          if (dists[c1.key][cur.key] < dists[c2.key][cur.key]) {
            dist = dists[c2.key][cur.key];
          }
        } else if (opts.linkage === 'mean') {
          dist = (dists[c1.key][cur.key] * c1.size + dists[c2.key][cur.key] * c2.size) / (c1.size + c2.size);
        } else {
          if (opts.mode === 'dendrogram') dist = getDist(cur.value, c1.value);else dist = getDist(cur.value[0], c1.value[0]);
        }
        dists[c1.key][cur.key] = dists[cur.key][c1.key] = dist; // distance matrix is symmetric
      }

      // Update cached mins
      for (var _i2 = 0; _i2 < clusters.length; _i2++) {
        var key1 = clusters[_i2].key;
        if (mins[key1] === c1.key || mins[key1] === c2.key) {
          var _min = key1;
          for (var j = 0; j < clusters.length; j++) {
            var key2 = clusters[j].key;
            if (dists[key1][key2] < dists[key1][_min]) {
              _min = key2;
            }
          }
          mins[key1] = _min;
        }
        clusters[_i2].index = _i2;
      }

      // Clean up meta data used for clustering
      c1.key = c2.key = c1.index = c2.index = null;
      return true;
    };
    var getAllChildren = function getAllChildren(root, arr, cy) {
      if (!root) return;
      if (root.value) {
        arr.push(root.value);
      } else {
        if (root.left) getAllChildren(root.left, arr);
        if (root.right) getAllChildren(root.right, arr);
      }
    };
    var buildDendrogram = function buildDendrogram(root, cy) {
      if (!root) return '';
      if (root.left && root.right) {
        var leftStr = buildDendrogram(root.left, cy);
        var rightStr = buildDendrogram(root.right, cy);
        var node = cy.add({
          group: 'nodes',
          data: {
            id: leftStr + ',' + rightStr
          }
        });
        cy.add({
          group: 'edges',
          data: {
            source: leftStr,
            target: node.id()
          }
        });
        cy.add({
          group: 'edges',
          data: {
            source: rightStr,
            target: node.id()
          }
        });
        return node.id();
      } else if (root.value) {
        return root.value.id();
      }
    };
    var buildClustersFromTree = function buildClustersFromTree(root, k, cy) {
      if (!root) return [];
      var left = [],
        right = [],
        leaves = [];
      if (k === 0) {
        // don't cut tree, simply return all nodes as 1 single cluster
        if (root.left) getAllChildren(root.left, left);
        if (root.right) getAllChildren(root.right, right);
        leaves = left.concat(right);
        return [cy.collection(leaves)];
      } else if (k === 1) {
        // cut at root

        if (root.value) {
          // leaf node
          return [cy.collection(root.value)];
        } else {
          if (root.left) getAllChildren(root.left, left);
          if (root.right) getAllChildren(root.right, right);
          return [cy.collection(left), cy.collection(right)];
        }
      } else {
        if (root.value) {
          return [cy.collection(root.value)];
        } else {
          if (root.left) left = buildClustersFromTree(root.left, k - 1, cy);
          if (root.right) right = buildClustersFromTree(root.right, k - 1, cy);
          return left.concat(right);
        }
      }
    };

    var hierarchicalClustering = function hierarchicalClustering(options) {
      var cy = this.cy();
      var nodes = this.nodes();

      // Set parameters of algorithm: linkage type, distance metric, etc.
      var opts = setOptions$1(options);
      var attrs = opts.attributes;
      var getDist = function getDist(n1, n2) {
        return clusteringDistance(opts.distance, attrs.length, function (i) {
          return attrs[i](n1);
        }, function (i) {
          return attrs[i](n2);
        }, n1, n2);
      };

      // Begin hierarchical algorithm
      var clusters = [];
      var dists = []; // distances between each pair of clusters
      var mins = []; // closest cluster for each cluster
      var index = []; // hash of all clusters by key

      // In agglomerative (bottom-up) clustering, each node starts as its own cluster
      for (var n = 0; n < nodes.length; n++) {
        var cluster = {
          value: opts.mode === 'dendrogram' ? nodes[n] : [nodes[n]],
          key: n,
          index: n
        };
        clusters[n] = cluster;
        index[n] = cluster;
        dists[n] = [];
        mins[n] = 0;
      }

      // Calculate the distance between each pair of clusters
      for (var i = 0; i < clusters.length; i++) {
        for (var j = 0; j <= i; j++) {
          var dist = void 0;
          if (opts.mode === 'dendrogram') {
            // modes store cluster values differently
            dist = i === j ? Infinity : getDist(clusters[i].value, clusters[j].value);
          } else {
            dist = i === j ? Infinity : getDist(clusters[i].value[0], clusters[j].value[0]);
          }
          dists[i][j] = dist;
          dists[j][i] = dist;
          if (dist < dists[i][mins[i]]) {
            mins[i] = j; // Cache mins: closest cluster to cluster i is cluster j
          }
        }
      }

      // Find the closest pair of clusters and merge them into a single cluster.
      // Update distances between new cluster and each of the old clusters, and loop until threshold reached.
      var merged = mergeClosest(clusters, index, dists, mins, opts);
      while (merged) {
        merged = mergeClosest(clusters, index, dists, mins, opts);
      }
      var retClusters;

      // Dendrogram mode builds the hierarchy and adds intermediary nodes + edges
      // in addition to returning the clusters.
      if (opts.mode === 'dendrogram') {
        retClusters = buildClustersFromTree(clusters[0], opts.dendrogramDepth, cy);
        if (opts.addDendrogram) buildDendrogram(clusters[0], cy);
      } else {
        // Regular mode simply returns the clusters

        retClusters = new Array(clusters.length);
        clusters.forEach(function (cluster, i) {
          // Clean up meta data used for clustering
          cluster.key = cluster.index = null;
          retClusters[i] = cy.collection(cluster.value);
        });
      }
      return retClusters;
    };
    var hierarchicalClustering$1 = {
      hierarchicalClustering: hierarchicalClustering,
      hca: hierarchicalClustering
    };

    // Implemented by Zoe Xi @zoexi for GSOC 2016
    var defaults$9 = defaults$g({
      distance: 'euclidean',
      // distance metric to compare attributes between two nodes
      preference: 'median',
      // suitability of a data point to serve as an exemplar
      damping: 0.8,
      // damping factor between [0.5, 1)
      maxIterations: 1000,
      // max number of iterations to run
      minIterations: 100,
      // min number of iterations to run in order for clustering to stop
      attributes: [// functions to quantify the similarity between any two points
        // e.g. node => node.data('weight')
      ]
    });
    var setOptions = function setOptions(options) {
      var dmp = options.damping;
      var pref = options.preference;
      if (!(0.5 <= dmp && dmp < 1)) {
        error("Damping must range on [0.5, 1).  Got: ".concat(dmp));
      }
      var validPrefs = ['median', 'mean', 'min', 'max'];
      if (!(validPrefs.some(function (v) {
        return v === pref;
      }) || number$1(pref))) {
        error("Preference must be one of [".concat(validPrefs.map(function (p) {
          return "'".concat(p, "'");
        }).join(', '), "] or a number.  Got: ").concat(pref));
      }
      return defaults$9(options);
    };

    var getSimilarity = function getSimilarity(type, n1, n2, attributes) {
      var attr = function attr(n, i) {
        return attributes[i](n);
      };

      // nb negative because similarity should have an inverse relationship to distance
      return -clusteringDistance(type, attributes.length, function (i) {
        return attr(n1, i);
      }, function (i) {
        return attr(n2, i);
      }, n1, n2);
    };
    var getPreference = function getPreference(S, preference) {
      // larger preference = greater # of clusters
      var p = null;
      if (preference === 'median') {
        p = median(S);
      } else if (preference === 'mean') {
        p = mean(S);
      } else if (preference === 'min') {
        p = min(S);
      } else if (preference === 'max') {
        p = max(S);
      } else {
        // Custom preference number, as set by user
        p = preference;
      }
      return p;
    };
    var findExemplars = function findExemplars(n, R, A) {
      var indices = [];
      for (var i = 0; i < n; i++) {
        if (R[i * n + i] + A[i * n + i] > 0) {
          indices.push(i);
        }
      }
      return indices;
    };
    var assignClusters = function assignClusters(n, S, exemplars) {
      var clusters = [];
      for (var i = 0; i < n; i++) {
        var index = -1;
        var max = -Infinity;
        for (var ei = 0; ei < exemplars.length; ei++) {
          var e = exemplars[ei];
          if (S[i * n + e] > max) {
            index = e;
            max = S[i * n + e];
          }
        }
        if (index > 0) {
          clusters.push(index);
        }
      }
      for (var _ei = 0; _ei < exemplars.length; _ei++) {
        clusters[exemplars[_ei]] = exemplars[_ei];
      }
      return clusters;
    };
    var assign = function assign(n, S, exemplars) {
      var clusters = assignClusters(n, S, exemplars);
      for (var ei = 0; ei < exemplars.length; ei++) {
        var ii = [];
        for (var c = 0; c < clusters.length; c++) {
          if (clusters[c] === exemplars[ei]) {
            ii.push(c);
          }
        }
        var maxI = -1;
        var maxSum = -Infinity;
        for (var i = 0; i < ii.length; i++) {
          var sum = 0;
          for (var j = 0; j < ii.length; j++) {
            sum += S[ii[j] * n + ii[i]];
          }
          if (sum > maxSum) {
            maxI = i;
            maxSum = sum;
          }
        }
        exemplars[ei] = ii[maxI];
      }
      clusters = assignClusters(n, S, exemplars);
      return clusters;
    };
    var affinityPropagation = function affinityPropagation(options) {
      var cy = this.cy();
      var nodes = this.nodes();
      var opts = setOptions(options);

      // Map each node to its position in node array
      var id2position = {};
      for (var i = 0; i < nodes.length; i++) {
        id2position[nodes[i].id()] = i;
      }

      // Begin affinity propagation algorithm

      var n; // number of data points
      var n2; // size of matrices
      var S; // similarity matrix (1D array)
      var p; // preference/suitability of a data point to serve as an exemplar
      var R; // responsibility matrix (1D array)
      var A; // availability matrix (1D array)

      n = nodes.length;
      n2 = n * n;

      // Initialize and build S similarity matrix
      S = new Array(n2);
      for (var _i = 0; _i < n2; _i++) {
        S[_i] = -Infinity; // for cases where two data points shouldn't be linked together
      }

      for (var _i2 = 0; _i2 < n; _i2++) {
        for (var j = 0; j < n; j++) {
          if (_i2 !== j) {
            S[_i2 * n + j] = getSimilarity(opts.distance, nodes[_i2], nodes[j], opts.attributes);
          }
        }
      }

      // Place preferences on the diagonal of S
      p = getPreference(S, opts.preference);
      for (var _i3 = 0; _i3 < n; _i3++) {
        S[_i3 * n + _i3] = p;
      }

      // Initialize R responsibility matrix
      R = new Array(n2);
      for (var _i4 = 0; _i4 < n2; _i4++) {
        R[_i4] = 0.0;
      }

      // Initialize A availability matrix
      A = new Array(n2);
      for (var _i5 = 0; _i5 < n2; _i5++) {
        A[_i5] = 0.0;
      }
      var old = new Array(n);
      var Rp = new Array(n);
      var se = new Array(n);
      for (var _i6 = 0; _i6 < n; _i6++) {
        old[_i6] = 0.0;
        Rp[_i6] = 0.0;
        se[_i6] = 0;
      }
      var e = new Array(n * opts.minIterations);
      for (var _i7 = 0; _i7 < e.length; _i7++) {
        e[_i7] = 0;
      }
      var iter;
      for (iter = 0; iter < opts.maxIterations; iter++) {
        // main algorithmic loop

        // Update R responsibility matrix
        for (var _i8 = 0; _i8 < n; _i8++) {
          var max = -Infinity,
            max2 = -Infinity,
            maxI = -1,
            AS = 0.0;
          for (var _j = 0; _j < n; _j++) {
            old[_j] = R[_i8 * n + _j];
            AS = A[_i8 * n + _j] + S[_i8 * n + _j];
            if (AS >= max) {
              max2 = max;
              max = AS;
              maxI = _j;
            } else if (AS > max2) {
              max2 = AS;
            }
          }
          for (var _j2 = 0; _j2 < n; _j2++) {
            R[_i8 * n + _j2] = (1 - opts.damping) * (S[_i8 * n + _j2] - max) + opts.damping * old[_j2];
          }
          R[_i8 * n + maxI] = (1 - opts.damping) * (S[_i8 * n + maxI] - max2) + opts.damping * old[maxI];
        }

        // Update A availability matrix
        for (var _i9 = 0; _i9 < n; _i9++) {
          var sum = 0;
          for (var _j3 = 0; _j3 < n; _j3++) {
            old[_j3] = A[_j3 * n + _i9];
            Rp[_j3] = Math.max(0, R[_j3 * n + _i9]);
            sum += Rp[_j3];
          }
          sum -= Rp[_i9];
          Rp[_i9] = R[_i9 * n + _i9];
          sum += Rp[_i9];
          for (var _j4 = 0; _j4 < n; _j4++) {
            A[_j4 * n + _i9] = (1 - opts.damping) * Math.min(0, sum - Rp[_j4]) + opts.damping * old[_j4];
          }
          A[_i9 * n + _i9] = (1 - opts.damping) * (sum - Rp[_i9]) + opts.damping * old[_i9];
        }

        // Check for convergence
        var K = 0;
        for (var _i10 = 0; _i10 < n; _i10++) {
          var E = A[_i10 * n + _i10] + R[_i10 * n + _i10] > 0 ? 1 : 0;
          e[iter % opts.minIterations * n + _i10] = E;
          K += E;
        }
        if (K > 0 && (iter >= opts.minIterations - 1 || iter == opts.maxIterations - 1)) {
          var _sum = 0;
          for (var _i11 = 0; _i11 < n; _i11++) {
            se[_i11] = 0;
            for (var _j5 = 0; _j5 < opts.minIterations; _j5++) {
              se[_i11] += e[_j5 * n + _i11];
            }
            if (se[_i11] === 0 || se[_i11] === opts.minIterations) {
              _sum++;
            }
          }
          if (_sum === n) {
            // then we have convergence
            break;
          }
        }
      }

      // Identify exemplars (cluster centers)
      var exemplarsIndices = findExemplars(n, R, A);

      // Assign nodes to clusters
      var clusterIndices = assign(n, S, exemplarsIndices);
      var clusters = {};
      for (var c = 0; c < exemplarsIndices.length; c++) {
        clusters[exemplarsIndices[c]] = [];
      }
      for (var _i12 = 0; _i12 < nodes.length; _i12++) {
        var pos = id2position[nodes[_i12].id()];
        var clusterIndex = clusterIndices[pos];
        if (clusterIndex != null) {
          // the node may have not been assigned a cluster if no valid attributes were specified
          clusters[clusterIndex].push(nodes[_i12]);
        }
      }
      var retClusters = new Array(exemplarsIndices.length);
      for (var _c = 0; _c < exemplarsIndices.length; _c++) {
        retClusters[_c] = cy.collection(clusters[exemplarsIndices[_c]]);
      }
      return retClusters;
    };
    var affinityPropagation$1 = {
      affinityPropagation: affinityPropagation,
      ap: affinityPropagation
    };

    var hierholzerDefaults = defaults$g({
      root: undefined,
      directed: false
    });
    var elesfn$k = {
      hierholzer: function hierholzer(options) {
        if (!plainObject(options)) {
          var args = arguments;
          options = {
            root: args[0],
            directed: args[1]
          };
        }
        var _hierholzerDefaults = hierholzerDefaults(options),
          root = _hierholzerDefaults.root,
          directed = _hierholzerDefaults.directed;
        var eles = this;
        var dflag = false;
        var oddIn;
        var oddOut;
        var startVertex;
        if (root) startVertex = string(root) ? this.filter(root)[0].id() : root[0].id();
        var nodes = {};
        var edges = {};
        if (directed) {
          eles.forEach(function (ele) {
            var id = ele.id();
            if (ele.isNode()) {
              var ind = ele.indegree(true);
              var outd = ele.outdegree(true);
              var d1 = ind - outd;
              var d2 = outd - ind;
              if (d1 == 1) {
                if (oddIn) dflag = true;else oddIn = id;
              } else if (d2 == 1) {
                if (oddOut) dflag = true;else oddOut = id;
              } else if (d2 > 1 || d1 > 1) {
                dflag = true;
              }
              nodes[id] = [];
              ele.outgoers().forEach(function (e) {
                if (e.isEdge()) nodes[id].push(e.id());
              });
            } else {
              edges[id] = [undefined, ele.target().id()];
            }
          });
        } else {
          eles.forEach(function (ele) {
            var id = ele.id();
            if (ele.isNode()) {
              var d = ele.degree(true);
              if (d % 2) {
                if (!oddIn) oddIn = id;else if (!oddOut) oddOut = id;else dflag = true;
              }
              nodes[id] = [];
              ele.connectedEdges().forEach(function (e) {
                return nodes[id].push(e.id());
              });
            } else {
              edges[id] = [ele.source().id(), ele.target().id()];
            }
          });
        }
        var result = {
          found: false,
          trail: undefined
        };
        if (dflag) return result;else if (oddOut && oddIn) {
          if (directed) {
            if (startVertex && oddOut != startVertex) {
              return result;
            }
            startVertex = oddOut;
          } else {
            if (startVertex && oddOut != startVertex && oddIn != startVertex) {
              return result;
            } else if (!startVertex) {
              startVertex = oddOut;
            }
          }
        } else {
          if (!startVertex) startVertex = eles[0].id();
        }
        var walk = function walk(v) {
          var currentNode = v;
          var subtour = [v];
          var adj, adjTail, adjHead;
          while (nodes[currentNode].length) {
            adj = nodes[currentNode].shift();
            adjTail = edges[adj][0];
            adjHead = edges[adj][1];
            if (currentNode != adjHead) {
              nodes[adjHead] = nodes[adjHead].filter(function (e) {
                return e != adj;
              });
              currentNode = adjHead;
            } else if (!directed && currentNode != adjTail) {
              nodes[adjTail] = nodes[adjTail].filter(function (e) {
                return e != adj;
              });
              currentNode = adjTail;
            }
            subtour.unshift(adj);
            subtour.unshift(currentNode);
          }
          return subtour;
        };
        var trail = [];
        var subtour = [];
        subtour = walk(startVertex);
        while (subtour.length != 1) {
          if (nodes[subtour[0]].length == 0) {
            trail.unshift(eles.getElementById(subtour.shift()));
            trail.unshift(eles.getElementById(subtour.shift()));
          } else {
            subtour = walk(subtour.shift()).concat(subtour);
          }
        }
        trail.unshift(eles.getElementById(subtour.shift())); // final node

        for (var d in nodes) {
          if (nodes[d].length) {
            return result;
          }
        }
        result.found = true;
        result.trail = this.spawn(trail, true);
        return result;
      }
    };

    var hopcroftTarjanBiconnected = function hopcroftTarjanBiconnected() {
      var eles = this;
      var nodes = {};
      var id = 0;
      var edgeCount = 0;
      var components = [];
      var stack = [];
      var visitedEdges = {};
      var buildComponent = function buildComponent(x, y) {
        var i = stack.length - 1;
        var cutset = [];
        var component = eles.spawn();
        while (stack[i].x != x || stack[i].y != y) {
          cutset.push(stack.pop().edge);
          i--;
        }
        cutset.push(stack.pop().edge);
        cutset.forEach(function (edge) {
          var connectedNodes = edge.connectedNodes().intersection(eles);
          component.merge(edge);
          connectedNodes.forEach(function (node) {
            var nodeId = node.id();
            var connectedEdges = node.connectedEdges().intersection(eles);
            component.merge(node);
            if (!nodes[nodeId].cutVertex) {
              component.merge(connectedEdges);
            } else {
              component.merge(connectedEdges.filter(function (edge) {
                return edge.isLoop();
              }));
            }
          });
        });
        components.push(component);
      };
      var biconnectedSearch = function biconnectedSearch(root, currentNode, parent) {
        if (root === parent) edgeCount += 1;
        nodes[currentNode] = {
          id: id,
          low: id++,
          cutVertex: false
        };
        var edges = eles.getElementById(currentNode).connectedEdges().intersection(eles);
        if (edges.size() === 0) {
          components.push(eles.spawn(eles.getElementById(currentNode)));
        } else {
          var sourceId, targetId, otherNodeId, edgeId;
          edges.forEach(function (edge) {
            sourceId = edge.source().id();
            targetId = edge.target().id();
            otherNodeId = sourceId === currentNode ? targetId : sourceId;
            if (otherNodeId !== parent) {
              edgeId = edge.id();
              if (!visitedEdges[edgeId]) {
                visitedEdges[edgeId] = true;
                stack.push({
                  x: currentNode,
                  y: otherNodeId,
                  edge: edge
                });
              }
              if (!(otherNodeId in nodes)) {
                biconnectedSearch(root, otherNodeId, currentNode);
                nodes[currentNode].low = Math.min(nodes[currentNode].low, nodes[otherNodeId].low);
                if (nodes[currentNode].id <= nodes[otherNodeId].low) {
                  nodes[currentNode].cutVertex = true;
                  buildComponent(currentNode, otherNodeId);
                }
              } else {
                nodes[currentNode].low = Math.min(nodes[currentNode].low, nodes[otherNodeId].id);
              }
            }
          });
        }
      };
      eles.forEach(function (ele) {
        if (ele.isNode()) {
          var nodeId = ele.id();
          if (!(nodeId in nodes)) {
            edgeCount = 0;
            biconnectedSearch(nodeId, nodeId);
            nodes[nodeId].cutVertex = edgeCount > 1;
          }
        }
      });
      var cutVertices = Object.keys(nodes).filter(function (id) {
        return nodes[id].cutVertex;
      }).map(function (id) {
        return eles.getElementById(id);
      });
      return {
        cut: eles.spawn(cutVertices),
        components: components
      };
    };
    var hopcroftTarjanBiconnected$1 = {
      hopcroftTarjanBiconnected: hopcroftTarjanBiconnected,
      htbc: hopcroftTarjanBiconnected,
      htb: hopcroftTarjanBiconnected,
      hopcroftTarjanBiconnectedComponents: hopcroftTarjanBiconnected
    };

    var tarjanStronglyConnected = function tarjanStronglyConnected() {
      var eles = this;
      var nodes = {};
      var index = 0;
      var components = [];
      var stack = [];
      var cut = eles.spawn(eles);
      var stronglyConnectedSearch = function stronglyConnectedSearch(sourceNodeId) {
        stack.push(sourceNodeId);
        nodes[sourceNodeId] = {
          index: index,
          low: index++,
          explored: false
        };
        var connectedEdges = eles.getElementById(sourceNodeId).connectedEdges().intersection(eles);
        connectedEdges.forEach(function (edge) {
          var targetNodeId = edge.target().id();
          if (targetNodeId !== sourceNodeId) {
            if (!(targetNodeId in nodes)) {
              stronglyConnectedSearch(targetNodeId);
            }
            if (!nodes[targetNodeId].explored) {
              nodes[sourceNodeId].low = Math.min(nodes[sourceNodeId].low, nodes[targetNodeId].low);
            }
          }
        });
        if (nodes[sourceNodeId].index === nodes[sourceNodeId].low) {
          var componentNodes = eles.spawn();
          for (;;) {
            var nodeId = stack.pop();
            componentNodes.merge(eles.getElementById(nodeId));
            nodes[nodeId].low = nodes[sourceNodeId].index;
            nodes[nodeId].explored = true;
            if (nodeId === sourceNodeId) {
              break;
            }
          }
          var componentEdges = componentNodes.edgesWith(componentNodes);
          var component = componentNodes.merge(componentEdges);
          components.push(component);
          cut = cut.difference(component);
        }
      };
      eles.forEach(function (ele) {
        if (ele.isNode()) {
          var nodeId = ele.id();
          if (!(nodeId in nodes)) {
            stronglyConnectedSearch(nodeId);
          }
        }
      });
      return {
        cut: cut,
        components: components
      };
    };
    var tarjanStronglyConnected$1 = {
      tarjanStronglyConnected: tarjanStronglyConnected,
      tsc: tarjanStronglyConnected,
      tscc: tarjanStronglyConnected,
      tarjanStronglyConnectedComponents: tarjanStronglyConnected
    };

    var elesfn$j = {};
    [elesfn$v, elesfn$u, elesfn$t, elesfn$s, elesfn$r, elesfn$q, elesfn$p, elesfn$o, elesfn$n, elesfn$m, elesfn$l, markovClustering$1, kClustering, hierarchicalClustering$1, affinityPropagation$1, elesfn$k, hopcroftTarjanBiconnected$1, tarjanStronglyConnected$1].forEach(function (props) {
      extend$1(elesfn$j, props);
    });

    /*!
    Embeddable Minimum Strictly-Compliant Promises/A+ 1.1.1 Thenable
    Copyright (c) 2013-2014 Ralf S. Engelschall (http://engelschall.com)
    Licensed under The MIT License (http://opensource.org/licenses/MIT)
    */

    /*  promise states [Promises/A+ 2.1]  */
    var STATE_PENDING = 0; /*  [Promises/A+ 2.1.1]  */
    var STATE_FULFILLED = 1; /*  [Promises/A+ 2.1.2]  */
    var STATE_REJECTED = 2; /*  [Promises/A+ 2.1.3]  */

    /*  promise object constructor  */
    var api = function api(executor) {
      /*  optionally support non-constructor/plain-function call  */
      if (!(this instanceof api)) return new api(executor);

      /*  initialize object  */
      this.id = 'Thenable/1.0.7';
      this.state = STATE_PENDING; /*  initial state  */
      this.fulfillValue = undefined; /*  initial value  */ /*  [Promises/A+ 1.3, 2.1.2.2]  */
      this.rejectReason = undefined; /*  initial reason */ /*  [Promises/A+ 1.5, 2.1.3.2]  */
      this.onFulfilled = []; /*  initial handlers  */
      this.onRejected = []; /*  initial handlers  */

      /*  provide optional information-hiding proxy  */
      this.proxy = {
        then: this.then.bind(this)
      };

      /*  support optional executor function  */
      if (typeof executor === 'function') executor.call(this, this.fulfill.bind(this), this.reject.bind(this));
    };

    /*  promise API methods  */
    api.prototype = {
      /*  promise resolving methods  */
      fulfill: function fulfill(value) {
        return deliver(this, STATE_FULFILLED, 'fulfillValue', value);
      },
      reject: function reject(value) {
        return deliver(this, STATE_REJECTED, 'rejectReason', value);
      },
      /*  "The then Method" [Promises/A+ 1.1, 1.2, 2.2]  */
      then: function then(onFulfilled, onRejected) {
        var curr = this;
        var next = new api(); /*  [Promises/A+ 2.2.7]  */
        curr.onFulfilled.push(resolver(onFulfilled, next, 'fulfill')); /*  [Promises/A+ 2.2.2/2.2.6]  */
        curr.onRejected.push(resolver(onRejected, next, 'reject')); /*  [Promises/A+ 2.2.3/2.2.6]  */
        execute(curr);
        return next.proxy; /*  [Promises/A+ 2.2.7, 3.3]  */
      }
    };

    /*  deliver an action  */
    var deliver = function deliver(curr, state, name, value) {
      if (curr.state === STATE_PENDING) {
        curr.state = state; /*  [Promises/A+ 2.1.2.1, 2.1.3.1]  */
        curr[name] = value; /*  [Promises/A+ 2.1.2.2, 2.1.3.2]  */
        execute(curr);
      }
      return curr;
    };

    /*  execute all handlers  */
    var execute = function execute(curr) {
      if (curr.state === STATE_FULFILLED) execute_handlers(curr, 'onFulfilled', curr.fulfillValue);else if (curr.state === STATE_REJECTED) execute_handlers(curr, 'onRejected', curr.rejectReason);
    };

    /*  execute particular set of handlers  */
    var execute_handlers = function execute_handlers(curr, name, value) {
      /* global setImmediate: true */
      /* global setTimeout: true */

      /*  short-circuit processing  */
      if (curr[name].length === 0) return;

      /*  iterate over all handlers, exactly once  */
      var handlers = curr[name];
      curr[name] = []; /*  [Promises/A+ 2.2.2.3, 2.2.3.3]  */
      var func = function func() {
        for (var i = 0; i < handlers.length; i++) {
          handlers[i](value);
        } /*  [Promises/A+ 2.2.5]  */
      };

      /*  execute procedure asynchronously  */ /*  [Promises/A+ 2.2.4, 3.1]  */
      if (typeof setImmediate === 'function') setImmediate(func);else setTimeout(func, 0);
    };

    /*  generate a resolver function  */
    var resolver = function resolver(cb, next, method) {
      return function (value) {
        if (typeof cb !== 'function') /*  [Promises/A+ 2.2.1, 2.2.7.3, 2.2.7.4]  */
          next[method].call(next, value); /*  [Promises/A+ 2.2.7.3, 2.2.7.4]  */else {
          var result;
          try {
            result = cb(value);
          } /*  [Promises/A+ 2.2.2.1, 2.2.3.1, 2.2.5, 3.2]  */ catch (e) {
            next.reject(e); /*  [Promises/A+ 2.2.7.2]  */
            return;
          }
          resolve(next, result); /*  [Promises/A+ 2.2.7.1]  */
        }
      };
    };

    /*  "Promise Resolution Procedure"  */ /*  [Promises/A+ 2.3]  */
    var resolve = function resolve(promise, x) {
      /*  sanity check arguments  */ /*  [Promises/A+ 2.3.1]  */
      if (promise === x || promise.proxy === x) {
        promise.reject(new TypeError('cannot resolve promise with itself'));
        return;
      }

      /*  surgically check for a "then" method
        (mainly to just call the "getter" of "then" only once)  */
      var then;
      if (_typeof(x) === 'object' && x !== null || typeof x === 'function') {
        try {
          then = x.then;
        } /*  [Promises/A+ 2.3.3.1, 3.5]  */ catch (e) {
          promise.reject(e); /*  [Promises/A+ 2.3.3.2]  */
          return;
        }
      }

      /*  handle own Thenables    [Promises/A+ 2.3.2]
        and similar "thenables" [Promises/A+ 2.3.3]  */
      if (typeof then === 'function') {
        var resolved = false;
        try {
          /*  call retrieved "then" method */ /*  [Promises/A+ 2.3.3.3]  */
          then.call(x, /*  resolvePromise  */ /*  [Promises/A+ 2.3.3.3.1]  */
          function (y) {
            if (resolved) return;
            resolved = true; /*  [Promises/A+ 2.3.3.3.3]  */
            if (y === x) /*  [Promises/A+ 3.6]  */
              promise.reject(new TypeError('circular thenable chain'));else resolve(promise, y);
          }, /*  rejectPromise  */ /*  [Promises/A+ 2.3.3.3.2]  */
          function (r) {
            if (resolved) return;
            resolved = true; /*  [Promises/A+ 2.3.3.3.3]  */
            promise.reject(r);
          });
        } catch (e) {
          if (!resolved) /*  [Promises/A+ 2.3.3.3.3]  */
            promise.reject(e); /*  [Promises/A+ 2.3.3.3.4]  */
        }

        return;
      }

      /*  handle other values  */
      promise.fulfill(x); /*  [Promises/A+ 2.3.4, 2.3.3.4]  */
    };

    // so we always have Promise.all()
    api.all = function (ps) {
      return new api(function (resolveAll, rejectAll) {
        var vals = new Array(ps.length);
        var doneCount = 0;
        var fulfill = function fulfill(i, val) {
          vals[i] = val;
          doneCount++;
          if (doneCount === ps.length) {
            resolveAll(vals);
          }
        };
        for (var i = 0; i < ps.length; i++) {
          (function (i) {
            var p = ps[i];
            var isPromise = p != null && p.then != null;
            if (isPromise) {
              p.then(function (val) {
                fulfill(i, val);
              }, function (err) {
                rejectAll(err);
              });
            } else {
              var val = p;
              fulfill(i, val);
            }
          })(i);
        }
      });
    };
    api.resolve = function (val) {
      return new api(function (resolve, reject) {
        resolve(val);
      });
    };
    api.reject = function (val) {
      return new api(function (resolve, reject) {
        reject(val);
      });
    };
    var Promise$1 = typeof Promise !== 'undefined' ? Promise : api; // eslint-disable-line no-undef

    var Animation = function Animation(target, opts, opts2) {
      var isCore = core$1(target);
      var isEle = !isCore;
      var _p = this._private = extend$1({
        duration: 1000
      }, opts, opts2);
      _p.target = target;
      _p.style = _p.style || _p.css;
      _p.started = false;
      _p.playing = false;
      _p.hooked = false;
      _p.applying = false;
      _p.progress = 0;
      _p.completes = [];
      _p.frames = [];
      if (_p.complete && fn$6(_p.complete)) {
        _p.completes.push(_p.complete);
      }
      if (isEle) {
        var pos = target.position();
        _p.startPosition = _p.startPosition || {
          x: pos.x,
          y: pos.y
        };
        _p.startStyle = _p.startStyle || target.cy().style().getAnimationStartStyle(target, _p.style);
      }
      if (isCore) {
        var pan = target.pan();
        _p.startPan = {
          x: pan.x,
          y: pan.y
        };
        _p.startZoom = target.zoom();
      }

      // for future timeline/animations impl
      this.length = 1;
      this[0] = this;
    };
    var anifn = Animation.prototype;
    extend$1(anifn, {
      instanceString: function instanceString() {
        return 'animation';
      },
      hook: function hook() {
        var _p = this._private;
        if (!_p.hooked) {
          // add to target's animation queue
          var q;
          var tAni = _p.target._private.animation;
          if (_p.queue) {
            q = tAni.queue;
          } else {
            q = tAni.current;
          }
          q.push(this);

          // add to the animation loop pool
          if (elementOrCollection(_p.target)) {
            _p.target.cy().addToAnimationPool(_p.target);
          }
          _p.hooked = true;
        }
        return this;
      },
      play: function play() {
        var _p = this._private;

        // autorewind
        if (_p.progress === 1) {
          _p.progress = 0;
        }
        _p.playing = true;
        _p.started = false; // needs to be started by animation loop
        _p.stopped = false;
        this.hook();

        // the animation loop will start the animation...

        return this;
      },
      playing: function playing() {
        return this._private.playing;
      },
      apply: function apply() {
        var _p = this._private;
        _p.applying = true;
        _p.started = false; // needs to be started by animation loop
        _p.stopped = false;
        this.hook();

        // the animation loop will apply the animation at this progress

        return this;
      },
      applying: function applying() {
        return this._private.applying;
      },
      pause: function pause() {
        var _p = this._private;
        _p.playing = false;
        _p.started = false;
        return this;
      },
      stop: function stop() {
        var _p = this._private;
        _p.playing = false;
        _p.started = false;
        _p.stopped = true; // to be removed from animation queues

        return this;
      },
      rewind: function rewind() {
        return this.progress(0);
      },
      fastforward: function fastforward() {
        return this.progress(1);
      },
      time: function time(t) {
        var _p = this._private;
        if (t === undefined) {
          return _p.progress * _p.duration;
        } else {
          return this.progress(t / _p.duration);
        }
      },
      progress: function progress(p) {
        var _p = this._private;
        var wasPlaying = _p.playing;
        if (p === undefined) {
          return _p.progress;
        } else {
          if (wasPlaying) {
            this.pause();
          }
          _p.progress = p;
          _p.started = false;
          if (wasPlaying) {
            this.play();
          }
        }
        return this;
      },
      completed: function completed() {
        return this._private.progress === 1;
      },
      reverse: function reverse() {
        var _p = this._private;
        var wasPlaying = _p.playing;
        if (wasPlaying) {
          this.pause();
        }
        _p.progress = 1 - _p.progress;
        _p.started = false;
        var swap = function swap(a, b) {
          var _pa = _p[a];
          if (_pa == null) {
            return;
          }
          _p[a] = _p[b];
          _p[b] = _pa;
        };
        swap('zoom', 'startZoom');
        swap('pan', 'startPan');
        swap('position', 'startPosition');

        // swap styles
        if (_p.style) {
          for (var i = 0; i < _p.style.length; i++) {
            var prop = _p.style[i];
            var name = prop.name;
            var startStyleProp = _p.startStyle[name];
            _p.startStyle[name] = prop;
            _p.style[i] = startStyleProp;
          }
        }
        if (wasPlaying) {
          this.play();
        }
        return this;
      },
      promise: function promise(type) {
        var _p = this._private;
        var arr;
        switch (type) {
          case 'frame':
            arr = _p.frames;
            break;
          default:
          case 'complete':
          case 'completed':
            arr = _p.completes;
        }
        return new Promise$1(function (resolve, reject) {
          arr.push(function () {
            resolve();
          });
        });
      }
    });
    anifn.complete = anifn.completed;
    anifn.run = anifn.play;
    anifn.running = anifn.playing;

    var define$3 = {
      animated: function animated() {
        return function animatedImpl() {
          var self = this;
          var selfIsArrayLike = self.length !== undefined;
          var all = selfIsArrayLike ? self : [self]; // put in array if not array-like
          var cy = this._private.cy || this;
          if (!cy.styleEnabled()) {
            return false;
          }
          var ele = all[0];
          if (ele) {
            return ele._private.animation.current.length > 0;
          }
        };
      },
      // animated

      clearQueue: function clearQueue() {
        return function clearQueueImpl() {
          var self = this;
          var selfIsArrayLike = self.length !== undefined;
          var all = selfIsArrayLike ? self : [self]; // put in array if not array-like
          var cy = this._private.cy || this;
          if (!cy.styleEnabled()) {
            return this;
          }
          for (var i = 0; i < all.length; i++) {
            var ele = all[i];
            ele._private.animation.queue = [];
          }
          return this;
        };
      },
      // clearQueue

      delay: function delay() {
        return function delayImpl(time, complete) {
          var cy = this._private.cy || this;
          if (!cy.styleEnabled()) {
            return this;
          }
          return this.animate({
            delay: time,
            duration: time,
            complete: complete
          });
        };
      },
      // delay

      delayAnimation: function delayAnimation() {
        return function delayAnimationImpl(time, complete) {
          var cy = this._private.cy || this;
          if (!cy.styleEnabled()) {
            return this;
          }
          return this.animation({
            delay: time,
            duration: time,
            complete: complete
          });
        };
      },
      // delay

      animation: function animation() {
        return function animationImpl(properties, params) {
          var self = this;
          var selfIsArrayLike = self.length !== undefined;
          var all = selfIsArrayLike ? self : [self]; // put in array if not array-like
          var cy = this._private.cy || this;
          var isCore = !selfIsArrayLike;
          var isEles = !isCore;
          if (!cy.styleEnabled()) {
            return this;
          }
          var style = cy.style();
          properties = extend$1({}, properties, params);
          var propertiesEmpty = Object.keys(properties).length === 0;
          if (propertiesEmpty) {
            return new Animation(all[0], properties); // nothing to animate
          }

          if (properties.duration === undefined) {
            properties.duration = 400;
          }
          switch (properties.duration) {
            case 'slow':
              properties.duration = 600;
              break;
            case 'fast':
              properties.duration = 200;
              break;
          }
          if (isEles) {
            properties.style = style.getPropsList(properties.style || properties.css);
            properties.css = undefined;
          }
          if (isEles && properties.renderedPosition != null) {
            var rpos = properties.renderedPosition;
            var pan = cy.pan();
            var zoom = cy.zoom();
            properties.position = renderedToModelPosition(rpos, zoom, pan);
          }

          // override pan w/ panBy if set
          if (isCore && properties.panBy != null) {
            var panBy = properties.panBy;
            var cyPan = cy.pan();
            properties.pan = {
              x: cyPan.x + panBy.x,
              y: cyPan.y + panBy.y
            };
          }

          // override pan w/ center if set
          var center = properties.center || properties.centre;
          if (isCore && center != null) {
            var centerPan = cy.getCenterPan(center.eles, properties.zoom);
            if (centerPan != null) {
              properties.pan = centerPan;
            }
          }

          // override pan & zoom w/ fit if set
          if (isCore && properties.fit != null) {
            var fit = properties.fit;
            var fitVp = cy.getFitViewport(fit.eles || fit.boundingBox, fit.padding);
            if (fitVp != null) {
              properties.pan = fitVp.pan;
              properties.zoom = fitVp.zoom;
            }
          }

          // override zoom (& potentially pan) w/ zoom obj if set
          if (isCore && plainObject(properties.zoom)) {
            var vp = cy.getZoomedViewport(properties.zoom);
            if (vp != null) {
              if (vp.zoomed) {
                properties.zoom = vp.zoom;
              }
              if (vp.panned) {
                properties.pan = vp.pan;
              }
            } else {
              properties.zoom = null; // an inavalid zoom (e.g. no delta) gets automatically destroyed
            }
          }

          return new Animation(all[0], properties);
        };
      },
      // animate

      animate: function animate() {
        return function animateImpl(properties, params) {
          var self = this;
          var selfIsArrayLike = self.length !== undefined;
          var all = selfIsArrayLike ? self : [self]; // put in array if not array-like
          var cy = this._private.cy || this;
          if (!cy.styleEnabled()) {
            return this;
          }
          if (params) {
            properties = extend$1({}, properties, params);
          }

          // manually hook and run the animation
          for (var i = 0; i < all.length; i++) {
            var ele = all[i];
            var queue = ele.animated() && (properties.queue === undefined || properties.queue);
            var ani = ele.animation(properties, queue ? {
              queue: true
            } : undefined);
            ani.play();
          }
          return this; // chaining
        };
      },

      // animate

      stop: function stop() {
        return function stopImpl(clearQueue, jumpToEnd) {
          var self = this;
          var selfIsArrayLike = self.length !== undefined;
          var all = selfIsArrayLike ? self : [self]; // put in array if not array-like
          var cy = this._private.cy || this;
          if (!cy.styleEnabled()) {
            return this;
          }
          for (var i = 0; i < all.length; i++) {
            var ele = all[i];
            var _p = ele._private;
            var anis = _p.animation.current;
            for (var j = 0; j < anis.length; j++) {
              var ani = anis[j];
              var ani_p = ani._private;
              if (jumpToEnd) {
                // next iteration of the animation loop, the animation
                // will go straight to the end and be removed
                ani_p.duration = 0;
              }
            }

            // clear the queue of future animations
            if (clearQueue) {
              _p.animation.queue = [];
            }
            if (!jumpToEnd) {
              _p.animation.current = [];
            }
          }

          // we have to notify (the animation loop doesn't do it for us on `stop`)
          cy.notify('draw');
          return this;
        };
      } // stop
    }; // define

    /**
     * Checks if `value` is classified as an `Array` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array, else `false`.
     * @example
     *
     * _.isArray([1, 2, 3]);
     * // => true
     *
     * _.isArray(document.body.children);
     * // => false
     *
     * _.isArray('abc');
     * // => false
     *
     * _.isArray(_.noop);
     * // => false
     */
    var isArray = Array.isArray;

    var isArray_1 = isArray;

    /** Used to match property names within property paths. */
    var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
        reIsPlainProp = /^\w*$/;

    /**
     * Checks if `value` is a property name and not a property path.
     *
     * @private
     * @param {*} value The value to check.
     * @param {Object} [object] The object to query keys on.
     * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
     */
    function isKey(value, object) {
      if (isArray_1(value)) {
        return false;
      }
      var type = typeof value;
      if (type == 'number' || type == 'symbol' || type == 'boolean' ||
          value == null || isSymbol_1(value)) {
        return true;
      }
      return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
        (object != null && value in Object(object));
    }

    var _isKey = isKey;

    /** `Object#toString` result references. */
    var asyncTag = '[object AsyncFunction]',
        funcTag = '[object Function]',
        genTag = '[object GeneratorFunction]',
        proxyTag = '[object Proxy]';

    /**
     * Checks if `value` is classified as a `Function` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a function, else `false`.
     * @example
     *
     * _.isFunction(_);
     * // => true
     *
     * _.isFunction(/abc/);
     * // => false
     */
    function isFunction(value) {
      if (!isObject_1$1(value)) {
        return false;
      }
      // The use of `Object#toString` avoids issues with the `typeof` operator
      // in Safari 9 which returns 'object' for typed arrays and other constructors.
      var tag = _baseGetTag(value);
      return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
    }

    var isFunction_1 = isFunction;

    /** Used to detect overreaching core-js shims. */
    var coreJsData = _root['__core-js_shared__'];

    var _coreJsData = coreJsData;

    /** Used to detect methods masquerading as native. */
    var maskSrcKey = (function() {
      var uid = /[^.]+$/.exec(_coreJsData && _coreJsData.keys && _coreJsData.keys.IE_PROTO || '');
      return uid ? ('Symbol(src)_1.' + uid) : '';
    }());

    /**
     * Checks if `func` has its source masked.
     *
     * @private
     * @param {Function} func The function to check.
     * @returns {boolean} Returns `true` if `func` is masked, else `false`.
     */
    function isMasked(func) {
      return !!maskSrcKey && (maskSrcKey in func);
    }

    var _isMasked = isMasked;

    /** Used for built-in method references. */
    var funcProto$1 = Function.prototype;

    /** Used to resolve the decompiled source of functions. */
    var funcToString$1 = funcProto$1.toString;

    /**
     * Converts `func` to its source code.
     *
     * @private
     * @param {Function} func The function to convert.
     * @returns {string} Returns the source code.
     */
    function toSource(func) {
      if (func != null) {
        try {
          return funcToString$1.call(func);
        } catch (e) {}
        try {
          return (func + '');
        } catch (e) {}
      }
      return '';
    }

    var _toSource = toSource;

    /**
     * Used to match `RegExp`
     * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
     */
    var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;

    /** Used to detect host constructors (Safari). */
    var reIsHostCtor = /^\[object .+?Constructor\]$/;

    /** Used for built-in method references. */
    var funcProto = Function.prototype,
        objectProto$3 = Object.prototype;

    /** Used to resolve the decompiled source of functions. */
    var funcToString = funcProto.toString;

    /** Used to check objects for own properties. */
    var hasOwnProperty$3 = objectProto$3.hasOwnProperty;

    /** Used to detect if a method is native. */
    var reIsNative = RegExp('^' +
      funcToString.call(hasOwnProperty$3).replace(reRegExpChar, '\\$&')
      .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
    );

    /**
     * The base implementation of `_.isNative` without bad shim checks.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a native function,
     *  else `false`.
     */
    function baseIsNative(value) {
      if (!isObject_1$1(value) || _isMasked(value)) {
        return false;
      }
      var pattern = isFunction_1(value) ? reIsNative : reIsHostCtor;
      return pattern.test(_toSource(value));
    }

    var _baseIsNative = baseIsNative;

    /**
     * Gets the value at `key` of `object`.
     *
     * @private
     * @param {Object} [object] The object to query.
     * @param {string} key The key of the property to get.
     * @returns {*} Returns the property value.
     */
    function getValue$1(object, key) {
      return object == null ? undefined : object[key];
    }

    var _getValue = getValue$1;

    /**
     * Gets the native function at `key` of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {string} key The key of the method to get.
     * @returns {*} Returns the function if it's native, else `undefined`.
     */
    function getNative(object, key) {
      var value = _getValue(object, key);
      return _baseIsNative(value) ? value : undefined;
    }

    var _getNative = getNative;

    /* Built-in method references that are verified to be native. */
    var nativeCreate = _getNative(Object, 'create');

    var _nativeCreate = nativeCreate;

    /**
     * Removes all key-value entries from the hash.
     *
     * @private
     * @name clear
     * @memberOf Hash
     */
    function hashClear() {
      this.__data__ = _nativeCreate ? _nativeCreate(null) : {};
      this.size = 0;
    }

    var _hashClear = hashClear;

    /**
     * Removes `key` and its value from the hash.
     *
     * @private
     * @name delete
     * @memberOf Hash
     * @param {Object} hash The hash to modify.
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function hashDelete(key) {
      var result = this.has(key) && delete this.__data__[key];
      this.size -= result ? 1 : 0;
      return result;
    }

    var _hashDelete = hashDelete;

    /** Used to stand-in for `undefined` hash values. */
    var HASH_UNDEFINED$1 = '__lodash_hash_undefined__';

    /** Used for built-in method references. */
    var objectProto$2 = Object.prototype;

    /** Used to check objects for own properties. */
    var hasOwnProperty$2 = objectProto$2.hasOwnProperty;

    /**
     * Gets the hash value for `key`.
     *
     * @private
     * @name get
     * @memberOf Hash
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function hashGet(key) {
      var data = this.__data__;
      if (_nativeCreate) {
        var result = data[key];
        return result === HASH_UNDEFINED$1 ? undefined : result;
      }
      return hasOwnProperty$2.call(data, key) ? data[key] : undefined;
    }

    var _hashGet = hashGet;

    /** Used for built-in method references. */
    var objectProto$1 = Object.prototype;

    /** Used to check objects for own properties. */
    var hasOwnProperty$1 = objectProto$1.hasOwnProperty;

    /**
     * Checks if a hash value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf Hash
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function hashHas(key) {
      var data = this.__data__;
      return _nativeCreate ? (data[key] !== undefined) : hasOwnProperty$1.call(data, key);
    }

    var _hashHas = hashHas;

    /** Used to stand-in for `undefined` hash values. */
    var HASH_UNDEFINED = '__lodash_hash_undefined__';

    /**
     * Sets the hash `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf Hash
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the hash instance.
     */
    function hashSet(key, value) {
      var data = this.__data__;
      this.size += this.has(key) ? 0 : 1;
      data[key] = (_nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
      return this;
    }

    var _hashSet = hashSet;

    /**
     * Creates a hash object.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function Hash(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    // Add methods to `Hash`.
    Hash.prototype.clear = _hashClear;
    Hash.prototype['delete'] = _hashDelete;
    Hash.prototype.get = _hashGet;
    Hash.prototype.has = _hashHas;
    Hash.prototype.set = _hashSet;

    var _Hash = Hash;

    /**
     * Removes all key-value entries from the list cache.
     *
     * @private
     * @name clear
     * @memberOf ListCache
     */
    function listCacheClear() {
      this.__data__ = [];
      this.size = 0;
    }

    var _listCacheClear = listCacheClear;

    /**
     * Performs a
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * comparison between two values to determine if they are equivalent.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * var object = { 'a': 1 };
     * var other = { 'a': 1 };
     *
     * _.eq(object, object);
     * // => true
     *
     * _.eq(object, other);
     * // => false
     *
     * _.eq('a', 'a');
     * // => true
     *
     * _.eq('a', Object('a'));
     * // => false
     *
     * _.eq(NaN, NaN);
     * // => true
     */
    function eq(value, other) {
      return value === other || (value !== value && other !== other);
    }

    var eq_1 = eq;

    /**
     * Gets the index at which the `key` is found in `array` of key-value pairs.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {*} key The key to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     */
    function assocIndexOf(array, key) {
      var length = array.length;
      while (length--) {
        if (eq_1(array[length][0], key)) {
          return length;
        }
      }
      return -1;
    }

    var _assocIndexOf = assocIndexOf;

    /** Used for built-in method references. */
    var arrayProto = Array.prototype;

    /** Built-in value references. */
    var splice = arrayProto.splice;

    /**
     * Removes `key` and its value from the list cache.
     *
     * @private
     * @name delete
     * @memberOf ListCache
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function listCacheDelete(key) {
      var data = this.__data__,
          index = _assocIndexOf(data, key);

      if (index < 0) {
        return false;
      }
      var lastIndex = data.length - 1;
      if (index == lastIndex) {
        data.pop();
      } else {
        splice.call(data, index, 1);
      }
      --this.size;
      return true;
    }

    var _listCacheDelete = listCacheDelete;

    /**
     * Gets the list cache value for `key`.
     *
     * @private
     * @name get
     * @memberOf ListCache
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function listCacheGet(key) {
      var data = this.__data__,
          index = _assocIndexOf(data, key);

      return index < 0 ? undefined : data[index][1];
    }

    var _listCacheGet = listCacheGet;

    /**
     * Checks if a list cache value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf ListCache
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function listCacheHas(key) {
      return _assocIndexOf(this.__data__, key) > -1;
    }

    var _listCacheHas = listCacheHas;

    /**
     * Sets the list cache `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf ListCache
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the list cache instance.
     */
    function listCacheSet(key, value) {
      var data = this.__data__,
          index = _assocIndexOf(data, key);

      if (index < 0) {
        ++this.size;
        data.push([key, value]);
      } else {
        data[index][1] = value;
      }
      return this;
    }

    var _listCacheSet = listCacheSet;

    /**
     * Creates an list cache object.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function ListCache(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    // Add methods to `ListCache`.
    ListCache.prototype.clear = _listCacheClear;
    ListCache.prototype['delete'] = _listCacheDelete;
    ListCache.prototype.get = _listCacheGet;
    ListCache.prototype.has = _listCacheHas;
    ListCache.prototype.set = _listCacheSet;

    var _ListCache = ListCache;

    /* Built-in method references that are verified to be native. */
    var Map$1 = _getNative(_root, 'Map');

    var _Map = Map$1;

    /**
     * Removes all key-value entries from the map.
     *
     * @private
     * @name clear
     * @memberOf MapCache
     */
    function mapCacheClear() {
      this.size = 0;
      this.__data__ = {
        'hash': new _Hash,
        'map': new (_Map || _ListCache),
        'string': new _Hash
      };
    }

    var _mapCacheClear = mapCacheClear;

    /**
     * Checks if `value` is suitable for use as unique object key.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
     */
    function isKeyable(value) {
      var type = typeof value;
      return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
        ? (value !== '__proto__')
        : (value === null);
    }

    var _isKeyable = isKeyable;

    /**
     * Gets the data for `map`.
     *
     * @private
     * @param {Object} map The map to query.
     * @param {string} key The reference key.
     * @returns {*} Returns the map data.
     */
    function getMapData(map, key) {
      var data = map.__data__;
      return _isKeyable(key)
        ? data[typeof key == 'string' ? 'string' : 'hash']
        : data.map;
    }

    var _getMapData = getMapData;

    /**
     * Removes `key` and its value from the map.
     *
     * @private
     * @name delete
     * @memberOf MapCache
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function mapCacheDelete(key) {
      var result = _getMapData(this, key)['delete'](key);
      this.size -= result ? 1 : 0;
      return result;
    }

    var _mapCacheDelete = mapCacheDelete;

    /**
     * Gets the map value for `key`.
     *
     * @private
     * @name get
     * @memberOf MapCache
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function mapCacheGet(key) {
      return _getMapData(this, key).get(key);
    }

    var _mapCacheGet = mapCacheGet;

    /**
     * Checks if a map value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf MapCache
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function mapCacheHas(key) {
      return _getMapData(this, key).has(key);
    }

    var _mapCacheHas = mapCacheHas;

    /**
     * Sets the map `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf MapCache
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the map cache instance.
     */
    function mapCacheSet(key, value) {
      var data = _getMapData(this, key),
          size = data.size;

      data.set(key, value);
      this.size += data.size == size ? 0 : 1;
      return this;
    }

    var _mapCacheSet = mapCacheSet;

    /**
     * Creates a map cache object to store key-value pairs.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function MapCache(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    // Add methods to `MapCache`.
    MapCache.prototype.clear = _mapCacheClear;
    MapCache.prototype['delete'] = _mapCacheDelete;
    MapCache.prototype.get = _mapCacheGet;
    MapCache.prototype.has = _mapCacheHas;
    MapCache.prototype.set = _mapCacheSet;

    var _MapCache = MapCache;

    /** Error message constants. */
    var FUNC_ERROR_TEXT = 'Expected a function';

    /**
     * Creates a function that memoizes the result of `func`. If `resolver` is
     * provided, it determines the cache key for storing the result based on the
     * arguments provided to the memoized function. By default, the first argument
     * provided to the memoized function is used as the map cache key. The `func`
     * is invoked with the `this` binding of the memoized function.
     *
     * **Note:** The cache is exposed as the `cache` property on the memoized
     * function. Its creation may be customized by replacing the `_.memoize.Cache`
     * constructor with one whose instances implement the
     * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
     * method interface of `clear`, `delete`, `get`, `has`, and `set`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to have its output memoized.
     * @param {Function} [resolver] The function to resolve the cache key.
     * @returns {Function} Returns the new memoized function.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     * var other = { 'c': 3, 'd': 4 };
     *
     * var values = _.memoize(_.values);
     * values(object);
     * // => [1, 2]
     *
     * values(other);
     * // => [3, 4]
     *
     * object.a = 2;
     * values(object);
     * // => [1, 2]
     *
     * // Modify the result cache.
     * values.cache.set(object, ['a', 'b']);
     * values(object);
     * // => ['a', 'b']
     *
     * // Replace `_.memoize.Cache`.
     * _.memoize.Cache = WeakMap;
     */
    function memoize(func, resolver) {
      if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      var memoized = function() {
        var args = arguments,
            key = resolver ? resolver.apply(this, args) : args[0],
            cache = memoized.cache;

        if (cache.has(key)) {
          return cache.get(key);
        }
        var result = func.apply(this, args);
        memoized.cache = cache.set(key, result) || cache;
        return result;
      };
      memoized.cache = new (memoize.Cache || _MapCache);
      return memoized;
    }

    // Expose `MapCache`.
    memoize.Cache = _MapCache;

    var memoize_1 = memoize;

    /** Used as the maximum memoize cache size. */
    var MAX_MEMOIZE_SIZE = 500;

    /**
     * A specialized version of `_.memoize` which clears the memoized function's
     * cache when it exceeds `MAX_MEMOIZE_SIZE`.
     *
     * @private
     * @param {Function} func The function to have its output memoized.
     * @returns {Function} Returns the new memoized function.
     */
    function memoizeCapped(func) {
      var result = memoize_1(func, function(key) {
        if (cache.size === MAX_MEMOIZE_SIZE) {
          cache.clear();
        }
        return key;
      });

      var cache = result.cache;
      return result;
    }

    var _memoizeCapped = memoizeCapped;

    /** Used to match property names within property paths. */
    var rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;

    /** Used to match backslashes in property paths. */
    var reEscapeChar = /\\(\\)?/g;

    /**
     * Converts `string` to a property path array.
     *
     * @private
     * @param {string} string The string to convert.
     * @returns {Array} Returns the property path array.
     */
    var stringToPath = _memoizeCapped(function(string) {
      var result = [];
      if (string.charCodeAt(0) === 46 /* . */) {
        result.push('');
      }
      string.replace(rePropName, function(match, number, quote, subString) {
        result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
      });
      return result;
    });

    var _stringToPath = stringToPath;

    /**
     * A specialized version of `_.map` for arrays without support for iteratee
     * shorthands.
     *
     * @private
     * @param {Array} [array] The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     */
    function arrayMap(array, iteratee) {
      var index = -1,
          length = array == null ? 0 : array.length,
          result = Array(length);

      while (++index < length) {
        result[index] = iteratee(array[index], index, array);
      }
      return result;
    }

    var _arrayMap = arrayMap;

    /** Used as references for various `Number` constants. */
    var INFINITY$1 = 1 / 0;

    /** Used to convert symbols to primitives and strings. */
    var symbolProto = _Symbol ? _Symbol.prototype : undefined,
        symbolToString = symbolProto ? symbolProto.toString : undefined;

    /**
     * The base implementation of `_.toString` which doesn't convert nullish
     * values to empty strings.
     *
     * @private
     * @param {*} value The value to process.
     * @returns {string} Returns the string.
     */
    function baseToString(value) {
      // Exit early for strings to avoid a performance hit in some environments.
      if (typeof value == 'string') {
        return value;
      }
      if (isArray_1(value)) {
        // Recursively convert values (susceptible to call stack limits).
        return _arrayMap(value, baseToString) + '';
      }
      if (isSymbol_1(value)) {
        return symbolToString ? symbolToString.call(value) : '';
      }
      var result = (value + '');
      return (result == '0' && (1 / value) == -INFINITY$1) ? '-0' : result;
    }

    var _baseToString = baseToString;

    /**
     * Converts `value` to a string. An empty string is returned for `null`
     * and `undefined` values. The sign of `-0` is preserved.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.toString(null);
     * // => ''
     *
     * _.toString(-0);
     * // => '-0'
     *
     * _.toString([1, 2, 3]);
     * // => '1,2,3'
     */
    function toString$1(value) {
      return value == null ? '' : _baseToString(value);
    }

    var toString_1 = toString$1;

    /**
     * Casts `value` to a path array if it's not one.
     *
     * @private
     * @param {*} value The value to inspect.
     * @param {Object} [object] The object to query keys on.
     * @returns {Array} Returns the cast property path array.
     */
    function castPath(value, object) {
      if (isArray_1(value)) {
        return value;
      }
      return _isKey(value, object) ? [value] : _stringToPath(toString_1(value));
    }

    var _castPath = castPath;

    /** Used as references for various `Number` constants. */
    var INFINITY = 1 / 0;

    /**
     * Converts `value` to a string key if it's not a string or symbol.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {string|symbol} Returns the key.
     */
    function toKey(value) {
      if (typeof value == 'string' || isSymbol_1(value)) {
        return value;
      }
      var result = (value + '');
      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
    }

    var _toKey = toKey;

    /**
     * The base implementation of `_.get` without support for default values.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to get.
     * @returns {*} Returns the resolved value.
     */
    function baseGet(object, path) {
      path = _castPath(path, object);

      var index = 0,
          length = path.length;

      while (object != null && index < length) {
        object = object[_toKey(path[index++])];
      }
      return (index && index == length) ? object : undefined;
    }

    var _baseGet = baseGet;

    /**
     * Gets the value at `path` of `object`. If the resolved value is
     * `undefined`, the `defaultValue` is returned in its place.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to get.
     * @param {*} [defaultValue] The value returned for `undefined` resolved values.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.get(object, 'a[0].b.c');
     * // => 3
     *
     * _.get(object, ['a', '0', 'b', 'c']);
     * // => 3
     *
     * _.get(object, 'a.b.c', 'default');
     * // => 'default'
     */
    function get(object, path, defaultValue) {
      var result = object == null ? undefined : _baseGet(object, path);
      return result === undefined ? defaultValue : result;
    }

    var get_1 = get;

    var defineProperty = (function() {
      try {
        var func = _getNative(Object, 'defineProperty');
        func({}, '', {});
        return func;
      } catch (e) {}
    }());

    var _defineProperty = defineProperty;

    /**
     * The base implementation of `assignValue` and `assignMergeValue` without
     * value checks.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function baseAssignValue(object, key, value) {
      if (key == '__proto__' && _defineProperty) {
        _defineProperty(object, key, {
          'configurable': true,
          'enumerable': true,
          'value': value,
          'writable': true
        });
      } else {
        object[key] = value;
      }
    }

    var _baseAssignValue = baseAssignValue;

    /** Used for built-in method references. */
    var objectProto = Object.prototype;

    /** Used to check objects for own properties. */
    var hasOwnProperty = objectProto.hasOwnProperty;

    /**
     * Assigns `value` to `key` of `object` if the existing value is not equivalent
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function assignValue(object, key, value) {
      var objValue = object[key];
      if (!(hasOwnProperty.call(object, key) && eq_1(objValue, value)) ||
          (value === undefined && !(key in object))) {
        _baseAssignValue(object, key, value);
      }
    }

    var _assignValue = assignValue;

    /** Used as references for various `Number` constants. */
    var MAX_SAFE_INTEGER = 9007199254740991;

    /** Used to detect unsigned integer values. */
    var reIsUint = /^(?:0|[1-9]\d*)$/;

    /**
     * Checks if `value` is a valid array-like index.
     *
     * @private
     * @param {*} value The value to check.
     * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
     * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
     */
    function isIndex(value, length) {
      var type = typeof value;
      length = length == null ? MAX_SAFE_INTEGER : length;

      return !!length &&
        (type == 'number' ||
          (type != 'symbol' && reIsUint.test(value))) &&
            (value > -1 && value % 1 == 0 && value < length);
    }

    var _isIndex = isIndex;

    /**
     * The base implementation of `_.set`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @param {Function} [customizer] The function to customize path creation.
     * @returns {Object} Returns `object`.
     */
    function baseSet(object, path, value, customizer) {
      if (!isObject_1$1(object)) {
        return object;
      }
      path = _castPath(path, object);

      var index = -1,
          length = path.length,
          lastIndex = length - 1,
          nested = object;

      while (nested != null && ++index < length) {
        var key = _toKey(path[index]),
            newValue = value;

        if (key === '__proto__' || key === 'constructor' || key === 'prototype') {
          return object;
        }

        if (index != lastIndex) {
          var objValue = nested[key];
          newValue = customizer ? customizer(objValue, key, nested) : undefined;
          if (newValue === undefined) {
            newValue = isObject_1$1(objValue)
              ? objValue
              : (_isIndex(path[index + 1]) ? [] : {});
          }
        }
        _assignValue(nested, key, newValue);
        nested = nested[key];
      }
      return object;
    }

    var _baseSet = baseSet;

    /**
     * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
     * it's created. Arrays are created for missing index properties while objects
     * are created for all other missing properties. Use `_.setWith` to customize
     * `path` creation.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.set(object, 'a[0].b.c', 4);
     * console.log(object.a[0].b.c);
     * // => 4
     *
     * _.set(object, ['x', '0', 'y', 'z'], 5);
     * console.log(object.x[0].y.z);
     * // => 5
     */
    function set$1(object, path, value) {
      return object == null ? object : _baseSet(object, path, value);
    }

    var set_1 = set$1;

    /**
     * Copies the values of `source` to `array`.
     *
     * @private
     * @param {Array} source The array to copy values from.
     * @param {Array} [array=[]] The array to copy values to.
     * @returns {Array} Returns `array`.
     */
    function copyArray$2(source, array) {
      var index = -1,
          length = source.length;

      array || (array = Array(length));
      while (++index < length) {
        array[index] = source[index];
      }
      return array;
    }

    var _copyArray = copyArray$2;

    /**
     * Converts `value` to a property path array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {*} value The value to convert.
     * @returns {Array} Returns the new property path array.
     * @example
     *
     * _.toPath('a.b.c');
     * // => ['a', 'b', 'c']
     *
     * _.toPath('a[0].b.c');
     * // => ['a', '0', 'b', 'c']
     */
    function toPath(value) {
      if (isArray_1(value)) {
        return _arrayMap(value, _toKey);
      }
      return isSymbol_1(value) ? [value] : _copyArray(_stringToPath(toString_1(value)));
    }

    var toPath_1 = toPath;

    var define$2 = {
      // access data field
      data: function data(params) {
        var defaults = {
          field: 'data',
          bindingEvent: 'data',
          allowBinding: false,
          allowSetting: false,
          allowGetting: false,
          settingEvent: 'data',
          settingTriggersEvent: false,
          triggerFnName: 'trigger',
          immutableKeys: {},
          // key => true if immutable
          updateStyle: false,
          beforeGet: function beforeGet(self) {},
          beforeSet: function beforeSet(self, obj) {},
          onSet: function onSet(self) {},
          canSet: function canSet(self) {
            return true;
          }
        };
        params = extend$1({}, defaults, params);
        return function dataImpl(name, value) {
          var p = params;
          var self = this;
          var selfIsArrayLike = self.length !== undefined;
          var all = selfIsArrayLike ? self : [self]; // put in array if not array-like
          var single = selfIsArrayLike ? self[0] : self;

          // .data('foo', ...)
          if (string(name)) {
            // set or get property
            var isPathLike = name.indexOf('.') !== -1; // there might be a normal field with a dot 
            var path = isPathLike && toPath_1(name);

            // .data('foo')
            if (p.allowGetting && value === undefined) {
              // get

              var ret;
              if (single) {
                p.beforeGet(single);

                // check if it's path and a field with the same name doesn't exist
                if (path && single._private[p.field][name] === undefined) {
                  ret = get_1(single._private[p.field], path);
                } else {
                  ret = single._private[p.field][name];
                }
              }
              return ret;

              // .data('foo', 'bar')
            } else if (p.allowSetting && value !== undefined) {
              // set
              var valid = !p.immutableKeys[name];
              if (valid) {
                var change = _defineProperty$1({}, name, value);
                p.beforeSet(self, change);
                for (var i = 0, l = all.length; i < l; i++) {
                  var ele = all[i];
                  if (p.canSet(ele)) {
                    if (path && single._private[p.field][name] === undefined) {
                      set_1(ele._private[p.field], path, value);
                    } else {
                      ele._private[p.field][name] = value;
                    }
                  }
                }

                // update mappers if asked
                if (p.updateStyle) {
                  self.updateStyle();
                }

                // call onSet callback
                p.onSet(self);
                if (p.settingTriggersEvent) {
                  self[p.triggerFnName](p.settingEvent);
                }
              }
            }

            // .data({ 'foo': 'bar' })
          } else if (p.allowSetting && plainObject(name)) {
            // extend
            var obj = name;
            var k, v;
            var keys = Object.keys(obj);
            p.beforeSet(self, obj);
            for (var _i = 0; _i < keys.length; _i++) {
              k = keys[_i];
              v = obj[k];
              var _valid = !p.immutableKeys[k];
              if (_valid) {
                for (var j = 0; j < all.length; j++) {
                  var _ele = all[j];
                  if (p.canSet(_ele)) {
                    _ele._private[p.field][k] = v;
                  }
                }
              }
            }

            // update mappers if asked
            if (p.updateStyle) {
              self.updateStyle();
            }

            // call onSet callback
            p.onSet(self);
            if (p.settingTriggersEvent) {
              self[p.triggerFnName](p.settingEvent);
            }

            // .data(function(){ ... })
          } else if (p.allowBinding && fn$6(name)) {
            // bind to event
            var fn = name;
            self.on(p.bindingEvent, fn);

            // .data()
          } else if (p.allowGetting && name === undefined) {
            // get whole object
            var _ret;
            if (single) {
              p.beforeGet(single);
              _ret = single._private[p.field];
            }
            return _ret;
          }
          return self; // maintain chainability
        }; // function
      },

      // data

      // remove data field
      removeData: function removeData(params) {
        var defaults = {
          field: 'data',
          event: 'data',
          triggerFnName: 'trigger',
          triggerEvent: false,
          immutableKeys: {} // key => true if immutable
        };

        params = extend$1({}, defaults, params);
        return function removeDataImpl(names) {
          var p = params;
          var self = this;
          var selfIsArrayLike = self.length !== undefined;
          var all = selfIsArrayLike ? self : [self]; // put in array if not array-like

          // .removeData('foo bar')
          if (string(names)) {
            // then get the list of keys, and delete them
            var keys = names.split(/\s+/);
            var l = keys.length;
            for (var i = 0; i < l; i++) {
              // delete each non-empty key
              var key = keys[i];
              if (emptyString(key)) {
                continue;
              }
              var valid = !p.immutableKeys[key]; // not valid if immutable
              if (valid) {
                for (var i_a = 0, l_a = all.length; i_a < l_a; i_a++) {
                  all[i_a]._private[p.field][key] = undefined;
                }
              }
            }
            if (p.triggerEvent) {
              self[p.triggerFnName](p.event);
            }

            // .removeData()
          } else if (names === undefined) {
            // then delete all keys

            for (var _i_a = 0, _l_a = all.length; _i_a < _l_a; _i_a++) {
              var _privateFields = all[_i_a]._private[p.field];
              var _keys = Object.keys(_privateFields);
              for (var _i2 = 0; _i2 < _keys.length; _i2++) {
                var _key = _keys[_i2];
                var validKeyToDelete = !p.immutableKeys[_key];
                if (validKeyToDelete) {
                  _privateFields[_key] = undefined;
                }
              }
            }
            if (p.triggerEvent) {
              self[p.triggerFnName](p.event);
            }
          }
          return self; // maintain chaining
        }; // function
      } // removeData
    }; // define

    var define$1 = {
      eventAliasesOn: function eventAliasesOn(proto) {
        var p = proto;
        p.addListener = p.listen = p.bind = p.on;
        p.unlisten = p.unbind = p.off = p.removeListener;
        p.trigger = p.emit;

        // this is just a wrapper alias of .on()
        p.pon = p.promiseOn = function (events, selector) {
          var self = this;
          var args = Array.prototype.slice.call(arguments, 0);
          return new Promise$1(function (resolve, reject) {
            var callback = function callback(e) {
              self.off.apply(self, offArgs);
              resolve(e);
            };
            var onArgs = args.concat([callback]);
            var offArgs = onArgs.concat([]);
            self.on.apply(self, onArgs);
          });
        };
      }
    }; // define

    // use this module to cherry pick functions into your prototype
    var define = {};
    [define$3, define$2, define$1].forEach(function (m) {
      extend$1(define, m);
    });

    var elesfn$i = {
      animate: define.animate(),
      animation: define.animation(),
      animated: define.animated(),
      clearQueue: define.clearQueue(),
      delay: define.delay(),
      delayAnimation: define.delayAnimation(),
      stop: define.stop()
    };

    var elesfn$h = {
      classes: function classes(_classes) {
        var self = this;
        if (_classes === undefined) {
          var ret = [];
          self[0]._private.classes.forEach(function (cls) {
            return ret.push(cls);
          });
          return ret;
        } else if (!array(_classes)) {
          // extract classes from string
          _classes = (_classes || '').match(/\S+/g) || [];
        }
        var changed = [];
        var classesSet = new Set$1(_classes);

        // check and update each ele
        for (var j = 0; j < self.length; j++) {
          var ele = self[j];
          var _p = ele._private;
          var eleClasses = _p.classes;
          var changedEle = false;

          // check if ele has all of the passed classes
          for (var i = 0; i < _classes.length; i++) {
            var cls = _classes[i];
            var eleHasClass = eleClasses.has(cls);
            if (!eleHasClass) {
              changedEle = true;
              break;
            }
          }

          // check if ele has classes outside of those passed
          if (!changedEle) {
            changedEle = eleClasses.size !== _classes.length;
          }
          if (changedEle) {
            _p.classes = classesSet;
            changed.push(ele);
          }
        }

        // trigger update style on those eles that had class changes
        if (changed.length > 0) {
          this.spawn(changed).updateStyle().emit('class');
        }
        return self;
      },
      addClass: function addClass(classes) {
        return this.toggleClass(classes, true);
      },
      hasClass: function hasClass(className) {
        var ele = this[0];
        return ele != null && ele._private.classes.has(className);
      },
      toggleClass: function toggleClass(classes, toggle) {
        if (!array(classes)) {
          // extract classes from string
          classes = classes.match(/\S+/g) || [];
        }
        var self = this;
        var toggleUndefd = toggle === undefined;
        var changed = []; // eles who had classes changed

        for (var i = 0, il = self.length; i < il; i++) {
          var ele = self[i];
          var eleClasses = ele._private.classes;
          var changedEle = false;
          for (var j = 0; j < classes.length; j++) {
            var cls = classes[j];
            var hasClass = eleClasses.has(cls);
            var changedNow = false;
            if (toggle || toggleUndefd && !hasClass) {
              eleClasses.add(cls);
              changedNow = true;
            } else if (!toggle || toggleUndefd && hasClass) {
              eleClasses["delete"](cls);
              changedNow = true;
            }
            if (!changedEle && changedNow) {
              changed.push(ele);
              changedEle = true;
            }
          } // for j classes
        } // for i eles

        // trigger update style on those eles that had class changes
        if (changed.length > 0) {
          this.spawn(changed).updateStyle().emit('class');
        }
        return self;
      },
      removeClass: function removeClass(classes) {
        return this.toggleClass(classes, false);
      },
      flashClass: function flashClass(classes, duration) {
        var self = this;
        if (duration == null) {
          duration = 250;
        } else if (duration === 0) {
          return self; // nothing to do really
        }

        self.addClass(classes);
        setTimeout(function () {
          self.removeClass(classes);
        }, duration);
        return self;
      }
    };
    elesfn$h.className = elesfn$h.classNames = elesfn$h.classes;

    // tokens in the query language
    var tokens = {
      metaChar: '[\\!\\"\\#\\$\\%\\&\\\'\\(\\)\\*\\+\\,\\.\\/\\:\\;\\<\\=\\>\\?\\@\\[\\]\\^\\`\\{\\|\\}\\~]',
      // chars we need to escape in let names, etc
      comparatorOp: '=|\\!=|>|>=|<|<=|\\$=|\\^=|\\*=',
      // binary comparison op (used in data selectors)
      boolOp: '\\?|\\!|\\^',
      // boolean (unary) operators (used in data selectors)
      string: '"(?:\\\\"|[^"])*"' + '|' + "'(?:\\\\'|[^'])*'",
      // string literals (used in data selectors) -- doublequotes | singlequotes
      number: number,
      // number literal (used in data selectors) --- e.g. 0.1234, 1234, 12e123
      meta: 'degree|indegree|outdegree',
      // allowed metadata fields (i.e. allowed functions to use from Collection)
      separator: '\\s*,\\s*',
      // queries are separated by commas, e.g. edge[foo = 'bar'], node.someClass
      descendant: '\\s+',
      child: '\\s+>\\s+',
      subject: '\\$',
      group: 'node|edge|\\*',
      directedEdge: '\\s+->\\s+',
      undirectedEdge: '\\s+<->\\s+'
    };
    tokens.variable = '(?:[\\w-.]|(?:\\\\' + tokens.metaChar + '))+'; // a variable name can have letters, numbers, dashes, and periods
    tokens.className = '(?:[\\w-]|(?:\\\\' + tokens.metaChar + '))+'; // a class name has the same rules as a variable except it can't have a '.' in the name
    tokens.value = tokens.string + '|' + tokens.number; // a value literal, either a string or number
    tokens.id = tokens.variable; // an element id (follows variable conventions)

    (function () {
      var ops, op, i;

      // add @ variants to comparatorOp
      ops = tokens.comparatorOp.split('|');
      for (i = 0; i < ops.length; i++) {
        op = ops[i];
        tokens.comparatorOp += '|@' + op;
      }

      // add ! variants to comparatorOp
      ops = tokens.comparatorOp.split('|');
      for (i = 0; i < ops.length; i++) {
        op = ops[i];
        if (op.indexOf('!') >= 0) {
          continue;
        } // skip ops that explicitly contain !
        if (op === '=') {
          continue;
        } // skip = b/c != is explicitly defined

        tokens.comparatorOp += '|\\!' + op;
      }
    })();

    /**
     * Make a new query object
     *
     * @prop type {Type} The type enum (int) of the query
     * @prop checks List of checks to make against an ele to test for a match
     */
    var newQuery = function newQuery() {
      return {
        checks: []
      };
    };

    /**
     * A check type enum-like object.  Uses integer values for fast match() lookup.
     * The ordering does not matter as long as the ints are unique.
     */
    var Type$2 = {
      /** E.g. node */
      GROUP: 0,
      /** A collection of elements */
      COLLECTION: 1,
      /** A filter(ele) function */
      FILTER: 2,
      /** E.g. [foo > 1] */
      DATA_COMPARE: 3,
      /** E.g. [foo] */
      DATA_EXIST: 4,
      /** E.g. [?foo] */
      DATA_BOOL: 5,
      /** E.g. [[degree > 2]] */
      META_COMPARE: 6,
      /** E.g. :selected */
      STATE: 7,
      /** E.g. #foo */
      ID: 8,
      /** E.g. .foo */
      CLASS: 9,
      /** E.g. #foo <-> #bar */
      UNDIRECTED_EDGE: 10,
      /** E.g. #foo -> #bar */
      DIRECTED_EDGE: 11,
      /** E.g. $#foo -> #bar */
      NODE_SOURCE: 12,
      /** E.g. #foo -> $#bar */
      NODE_TARGET: 13,
      /** E.g. $#foo <-> #bar */
      NODE_NEIGHBOR: 14,
      /** E.g. #foo > #bar */
      CHILD: 15,
      /** E.g. #foo #bar */
      DESCENDANT: 16,
      /** E.g. $#foo > #bar */
      PARENT: 17,
      /** E.g. $#foo #bar */
      ANCESTOR: 18,
      /** E.g. #foo > $bar > #baz */
      COMPOUND_SPLIT: 19,
      /** Always matches, useful placeholder for subject in `COMPOUND_SPLIT` */
      TRUE: 20
    };

    var stateSelectors = [{
      selector: ':selected',
      matches: function matches(ele) {
        return ele.selected();
      }
    }, {
      selector: ':unselected',
      matches: function matches(ele) {
        return !ele.selected();
      }
    }, {
      selector: ':selectable',
      matches: function matches(ele) {
        return ele.selectable();
      }
    }, {
      selector: ':unselectable',
      matches: function matches(ele) {
        return !ele.selectable();
      }
    }, {
      selector: ':locked',
      matches: function matches(ele) {
        return ele.locked();
      }
    }, {
      selector: ':unlocked',
      matches: function matches(ele) {
        return !ele.locked();
      }
    }, {
      selector: ':visible',
      matches: function matches(ele) {
        return ele.visible();
      }
    }, {
      selector: ':hidden',
      matches: function matches(ele) {
        return !ele.visible();
      }
    }, {
      selector: ':transparent',
      matches: function matches(ele) {
        return ele.transparent();
      }
    }, {
      selector: ':grabbed',
      matches: function matches(ele) {
        return ele.grabbed();
      }
    }, {
      selector: ':free',
      matches: function matches(ele) {
        return !ele.grabbed();
      }
    }, {
      selector: ':removed',
      matches: function matches(ele) {
        return ele.removed();
      }
    }, {
      selector: ':inside',
      matches: function matches(ele) {
        return !ele.removed();
      }
    }, {
      selector: ':grabbable',
      matches: function matches(ele) {
        return ele.grabbable();
      }
    }, {
      selector: ':ungrabbable',
      matches: function matches(ele) {
        return !ele.grabbable();
      }
    }, {
      selector: ':animated',
      matches: function matches(ele) {
        return ele.animated();
      }
    }, {
      selector: ':unanimated',
      matches: function matches(ele) {
        return !ele.animated();
      }
    }, {
      selector: ':parent',
      matches: function matches(ele) {
        return ele.isParent();
      }
    }, {
      selector: ':childless',
      matches: function matches(ele) {
        return ele.isChildless();
      }
    }, {
      selector: ':child',
      matches: function matches(ele) {
        return ele.isChild();
      }
    }, {
      selector: ':orphan',
      matches: function matches(ele) {
        return ele.isOrphan();
      }
    }, {
      selector: ':nonorphan',
      matches: function matches(ele) {
        return ele.isChild();
      }
    }, {
      selector: ':compound',
      matches: function matches(ele) {
        if (ele.isNode()) {
          return ele.isParent();
        } else {
          return ele.source().isParent() || ele.target().isParent();
        }
      }
    }, {
      selector: ':loop',
      matches: function matches(ele) {
        return ele.isLoop();
      }
    }, {
      selector: ':simple',
      matches: function matches(ele) {
        return ele.isSimple();
      }
    }, {
      selector: ':active',
      matches: function matches(ele) {
        return ele.active();
      }
    }, {
      selector: ':inactive',
      matches: function matches(ele) {
        return !ele.active();
      }
    }, {
      selector: ':backgrounding',
      matches: function matches(ele) {
        return ele.backgrounding();
      }
    }, {
      selector: ':nonbackgrounding',
      matches: function matches(ele) {
        return !ele.backgrounding();
      }
    }].sort(function (a, b) {
      // n.b. selectors that are starting substrings of others must have the longer ones first
      return descending(a.selector, b.selector);
    });
    var lookup = function () {
      var selToFn = {};
      var s;
      for (var i = 0; i < stateSelectors.length; i++) {
        s = stateSelectors[i];
        selToFn[s.selector] = s.matches;
      }
      return selToFn;
    }();
    var stateSelectorMatches = function stateSelectorMatches(sel, ele) {
      return lookup[sel](ele);
    };
    var stateSelectorRegex = '(' + stateSelectors.map(function (s) {
      return s.selector;
    }).join('|') + ')';

    // when a token like a variable has escaped meta characters, we need to clean the backslashes out
    // so that values get compared properly in Selector.filter()
    var cleanMetaChars = function cleanMetaChars(str) {
      return str.replace(new RegExp('\\\\(' + tokens.metaChar + ')', 'g'), function (match, $1) {
        return $1;
      });
    };
    var replaceLastQuery = function replaceLastQuery(selector, examiningQuery, replacementQuery) {
      selector[selector.length - 1] = replacementQuery;
    };

    // NOTE: add new expression syntax here to have it recognised by the parser;
    // - a query contains all adjacent (i.e. no separator in between) expressions;
    // - the current query is stored in selector[i]
    // - you need to check the query objects in match() for it actually filter properly, but that's pretty straight forward
    var exprs = [{
      name: 'group',
      // just used for identifying when debugging
      query: true,
      regex: '(' + tokens.group + ')',
      populate: function populate(selector, query, _ref) {
        var _ref2 = _slicedToArray(_ref, 1),
          group = _ref2[0];
        query.checks.push({
          type: Type$2.GROUP,
          value: group === '*' ? group : group + 's'
        });
      }
    }, {
      name: 'state',
      query: true,
      regex: stateSelectorRegex,
      populate: function populate(selector, query, _ref3) {
        var _ref4 = _slicedToArray(_ref3, 1),
          state = _ref4[0];
        query.checks.push({
          type: Type$2.STATE,
          value: state
        });
      }
    }, {
      name: 'id',
      query: true,
      regex: '\\#(' + tokens.id + ')',
      populate: function populate(selector, query, _ref5) {
        var _ref6 = _slicedToArray(_ref5, 1),
          id = _ref6[0];
        query.checks.push({
          type: Type$2.ID,
          value: cleanMetaChars(id)
        });
      }
    }, {
      name: 'className',
      query: true,
      regex: '\\.(' + tokens.className + ')',
      populate: function populate(selector, query, _ref7) {
        var _ref8 = _slicedToArray(_ref7, 1),
          className = _ref8[0];
        query.checks.push({
          type: Type$2.CLASS,
          value: cleanMetaChars(className)
        });
      }
    }, {
      name: 'dataExists',
      query: true,
      regex: '\\[\\s*(' + tokens.variable + ')\\s*\\]',
      populate: function populate(selector, query, _ref9) {
        var _ref10 = _slicedToArray(_ref9, 1),
          variable = _ref10[0];
        query.checks.push({
          type: Type$2.DATA_EXIST,
          field: cleanMetaChars(variable)
        });
      }
    }, {
      name: 'dataCompare',
      query: true,
      regex: '\\[\\s*(' + tokens.variable + ')\\s*(' + tokens.comparatorOp + ')\\s*(' + tokens.value + ')\\s*\\]',
      populate: function populate(selector, query, _ref11) {
        var _ref12 = _slicedToArray(_ref11, 3),
          variable = _ref12[0],
          comparatorOp = _ref12[1],
          value = _ref12[2];
        var valueIsString = new RegExp('^' + tokens.string + '$').exec(value) != null;
        if (valueIsString) {
          value = value.substring(1, value.length - 1);
        } else {
          value = parseFloat(value);
        }
        query.checks.push({
          type: Type$2.DATA_COMPARE,
          field: cleanMetaChars(variable),
          operator: comparatorOp,
          value: value
        });
      }
    }, {
      name: 'dataBool',
      query: true,
      regex: '\\[\\s*(' + tokens.boolOp + ')\\s*(' + tokens.variable + ')\\s*\\]',
      populate: function populate(selector, query, _ref13) {
        var _ref14 = _slicedToArray(_ref13, 2),
          boolOp = _ref14[0],
          variable = _ref14[1];
        query.checks.push({
          type: Type$2.DATA_BOOL,
          field: cleanMetaChars(variable),
          operator: boolOp
        });
      }
    }, {
      name: 'metaCompare',
      query: true,
      regex: '\\[\\[\\s*(' + tokens.meta + ')\\s*(' + tokens.comparatorOp + ')\\s*(' + tokens.number + ')\\s*\\]\\]',
      populate: function populate(selector, query, _ref15) {
        var _ref16 = _slicedToArray(_ref15, 3),
          meta = _ref16[0],
          comparatorOp = _ref16[1],
          number = _ref16[2];
        query.checks.push({
          type: Type$2.META_COMPARE,
          field: cleanMetaChars(meta),
          operator: comparatorOp,
          value: parseFloat(number)
        });
      }
    }, {
      name: 'nextQuery',
      separator: true,
      regex: tokens.separator,
      populate: function populate(selector, query) {
        var currentSubject = selector.currentSubject;
        var edgeCount = selector.edgeCount;
        var compoundCount = selector.compoundCount;
        var lastQ = selector[selector.length - 1];
        if (currentSubject != null) {
          lastQ.subject = currentSubject;
          selector.currentSubject = null;
        }
        lastQ.edgeCount = edgeCount;
        lastQ.compoundCount = compoundCount;
        selector.edgeCount = 0;
        selector.compoundCount = 0;

        // go on to next query
        var nextQuery = selector[selector.length++] = newQuery();
        return nextQuery; // this is the new query to be filled by the following exprs
      }
    }, {
      name: 'directedEdge',
      separator: true,
      regex: tokens.directedEdge,
      populate: function populate(selector, query) {
        if (selector.currentSubject == null) {
          // undirected edge
          var edgeQuery = newQuery();
          var source = query;
          var target = newQuery();
          edgeQuery.checks.push({
            type: Type$2.DIRECTED_EDGE,
            source: source,
            target: target
          });

          // the query in the selector should be the edge rather than the source
          replaceLastQuery(selector, query, edgeQuery);
          selector.edgeCount++;

          // we're now populating the target query with expressions that follow
          return target;
        } else {
          // source/target
          var srcTgtQ = newQuery();
          var _source = query;
          var _target = newQuery();
          srcTgtQ.checks.push({
            type: Type$2.NODE_SOURCE,
            source: _source,
            target: _target
          });

          // the query in the selector should be the neighbourhood rather than the node
          replaceLastQuery(selector, query, srcTgtQ);
          selector.edgeCount++;
          return _target; // now populating the target with the following expressions
        }
      }
    }, {
      name: 'undirectedEdge',
      separator: true,
      regex: tokens.undirectedEdge,
      populate: function populate(selector, query) {
        if (selector.currentSubject == null) {
          // undirected edge
          var edgeQuery = newQuery();
          var source = query;
          var target = newQuery();
          edgeQuery.checks.push({
            type: Type$2.UNDIRECTED_EDGE,
            nodes: [source, target]
          });

          // the query in the selector should be the edge rather than the source
          replaceLastQuery(selector, query, edgeQuery);
          selector.edgeCount++;

          // we're now populating the target query with expressions that follow
          return target;
        } else {
          // neighbourhood
          var nhoodQ = newQuery();
          var node = query;
          var neighbor = newQuery();
          nhoodQ.checks.push({
            type: Type$2.NODE_NEIGHBOR,
            node: node,
            neighbor: neighbor
          });

          // the query in the selector should be the neighbourhood rather than the node
          replaceLastQuery(selector, query, nhoodQ);
          return neighbor; // now populating the neighbor with following expressions
        }
      }
    }, {
      name: 'child',
      separator: true,
      regex: tokens.child,
      populate: function populate(selector, query) {
        if (selector.currentSubject == null) {
          // default: child query
          var parentChildQuery = newQuery();
          var child = newQuery();
          var parent = selector[selector.length - 1];
          parentChildQuery.checks.push({
            type: Type$2.CHILD,
            parent: parent,
            child: child
          });

          // the query in the selector should be the '>' itself
          replaceLastQuery(selector, query, parentChildQuery);
          selector.compoundCount++;

          // we're now populating the child query with expressions that follow
          return child;
        } else if (selector.currentSubject === query) {
          // compound split query
          var compound = newQuery();
          var left = selector[selector.length - 1];
          var right = newQuery();
          var subject = newQuery();
          var _child = newQuery();
          var _parent = newQuery();

          // set up the root compound q
          compound.checks.push({
            type: Type$2.COMPOUND_SPLIT,
            left: left,
            right: right,
            subject: subject
          });

          // populate the subject and replace the q at the old spot (within left) with TRUE
          subject.checks = query.checks; // take the checks from the left
          query.checks = [{
            type: Type$2.TRUE
          }]; // checks under left refs the subject implicitly

          // set up the right q
          _parent.checks.push({
            type: Type$2.TRUE
          }); // parent implicitly refs the subject
          right.checks.push({
            type: Type$2.PARENT,
            // type is swapped on right side queries
            parent: _parent,
            child: _child // empty for now
          });

          replaceLastQuery(selector, left, compound);

          // update the ref since we moved things around for `query`
          selector.currentSubject = subject;
          selector.compoundCount++;
          return _child; // now populating the right side's child
        } else {
          // parent query
          // info for parent query
          var _parent2 = newQuery();
          var _child2 = newQuery();
          var pcQChecks = [{
            type: Type$2.PARENT,
            parent: _parent2,
            child: _child2
          }];

          // the parent-child query takes the place of the query previously being populated
          _parent2.checks = query.checks; // the previous query contains the checks for the parent
          query.checks = pcQChecks; // pc query takes over

          selector.compoundCount++;
          return _child2; // we're now populating the child
        }
      }
    }, {
      name: 'descendant',
      separator: true,
      regex: tokens.descendant,
      populate: function populate(selector, query) {
        if (selector.currentSubject == null) {
          // default: descendant query
          var ancChQuery = newQuery();
          var descendant = newQuery();
          var ancestor = selector[selector.length - 1];
          ancChQuery.checks.push({
            type: Type$2.DESCENDANT,
            ancestor: ancestor,
            descendant: descendant
          });

          // the query in the selector should be the '>' itself
          replaceLastQuery(selector, query, ancChQuery);
          selector.compoundCount++;

          // we're now populating the descendant query with expressions that follow
          return descendant;
        } else if (selector.currentSubject === query) {
          // compound split query
          var compound = newQuery();
          var left = selector[selector.length - 1];
          var right = newQuery();
          var subject = newQuery();
          var _descendant = newQuery();
          var _ancestor = newQuery();

          // set up the root compound q
          compound.checks.push({
            type: Type$2.COMPOUND_SPLIT,
            left: left,
            right: right,
            subject: subject
          });

          // populate the subject and replace the q at the old spot (within left) with TRUE
          subject.checks = query.checks; // take the checks from the left
          query.checks = [{
            type: Type$2.TRUE
          }]; // checks under left refs the subject implicitly

          // set up the right q
          _ancestor.checks.push({
            type: Type$2.TRUE
          }); // ancestor implicitly refs the subject
          right.checks.push({
            type: Type$2.ANCESTOR,
            // type is swapped on right side queries
            ancestor: _ancestor,
            descendant: _descendant // empty for now
          });

          replaceLastQuery(selector, left, compound);

          // update the ref since we moved things around for `query`
          selector.currentSubject = subject;
          selector.compoundCount++;
          return _descendant; // now populating the right side's descendant
        } else {
          // ancestor query
          // info for parent query
          var _ancestor2 = newQuery();
          var _descendant2 = newQuery();
          var adQChecks = [{
            type: Type$2.ANCESTOR,
            ancestor: _ancestor2,
            descendant: _descendant2
          }];

          // the parent-child query takes the place of the query previously being populated
          _ancestor2.checks = query.checks; // the previous query contains the checks for the parent
          query.checks = adQChecks; // pc query takes over

          selector.compoundCount++;
          return _descendant2; // we're now populating the child
        }
      }
    }, {
      name: 'subject',
      modifier: true,
      regex: tokens.subject,
      populate: function populate(selector, query) {
        if (selector.currentSubject != null && selector.currentSubject !== query) {
          warn('Redefinition of subject in selector `' + selector.toString() + '`');
          return false;
        }
        selector.currentSubject = query;
        var topQ = selector[selector.length - 1];
        var topChk = topQ.checks[0];
        var topType = topChk == null ? null : topChk.type;
        if (topType === Type$2.DIRECTED_EDGE) {
          // directed edge with subject on the target

          // change to target node check
          topChk.type = Type$2.NODE_TARGET;
        } else if (topType === Type$2.UNDIRECTED_EDGE) {
          // undirected edge with subject on the second node

          // change to neighbor check
          topChk.type = Type$2.NODE_NEIGHBOR;
          topChk.node = topChk.nodes[1]; // second node is subject
          topChk.neighbor = topChk.nodes[0];

          // clean up unused fields for new type
          topChk.nodes = null;
        }
      }
    }];
    exprs.forEach(function (e) {
      return e.regexObj = new RegExp('^' + e.regex);
    });

    /**
     * Of all the expressions, find the first match in the remaining text.
     * @param {string} remaining The remaining text to parse
     * @returns The matched expression and the newly remaining text `{ expr, match, name, remaining }`
     */
    var consumeExpr = function consumeExpr(remaining) {
      var expr;
      var match;
      var name;
      for (var j = 0; j < exprs.length; j++) {
        var e = exprs[j];
        var n = e.name;
        var m = remaining.match(e.regexObj);
        if (m != null) {
          match = m;
          expr = e;
          name = n;
          var consumed = m[0];
          remaining = remaining.substring(consumed.length);
          break; // we've consumed one expr, so we can return now
        }
      }

      return {
        expr: expr,
        match: match,
        name: name,
        remaining: remaining
      };
    };

    /**
     * Consume all the leading whitespace
     * @param {string} remaining The text to consume
     * @returns The text with the leading whitespace removed
     */
    var consumeWhitespace = function consumeWhitespace(remaining) {
      var match = remaining.match(/^\s+/);
      if (match) {
        var consumed = match[0];
        remaining = remaining.substring(consumed.length);
      }
      return remaining;
    };

    /**
     * Parse the string and store the parsed representation in the Selector.
     * @param {string} selector The selector string
     * @returns `true` if the selector was successfully parsed, `false` otherwise
     */
    var parse = function parse(selector) {
      var self = this;
      var remaining = self.inputText = selector;
      var currentQuery = self[0] = newQuery();
      self.length = 1;
      remaining = consumeWhitespace(remaining); // get rid of leading whitespace

      for (;;) {
        var exprInfo = consumeExpr(remaining);
        if (exprInfo.expr == null) {
          warn('The selector `' + selector + '`is invalid');
          return false;
        } else {
          var args = exprInfo.match.slice(1);

          // let the token populate the selector object in currentQuery
          var ret = exprInfo.expr.populate(self, currentQuery, args);
          if (ret === false) {
            return false; // exit if population failed
          } else if (ret != null) {
            currentQuery = ret; // change the current query to be filled if the expr specifies
          }
        }

        remaining = exprInfo.remaining;

        // we're done when there's nothing left to parse
        if (remaining.match(/^\s*$/)) {
          break;
        }
      }
      var lastQ = self[self.length - 1];
      if (self.currentSubject != null) {
        lastQ.subject = self.currentSubject;
      }
      lastQ.edgeCount = self.edgeCount;
      lastQ.compoundCount = self.compoundCount;
      for (var i = 0; i < self.length; i++) {
        var q = self[i];

        // in future, this could potentially be allowed if there were operator precedence and detection of invalid combinations
        if (q.compoundCount > 0 && q.edgeCount > 0) {
          warn('The selector `' + selector + '` is invalid because it uses both a compound selector and an edge selector');
          return false;
        }
        if (q.edgeCount > 1) {
          warn('The selector `' + selector + '` is invalid because it uses multiple edge selectors');
          return false;
        } else if (q.edgeCount === 1) {
          warn('The selector `' + selector + '` is deprecated.  Edge selectors do not take effect on changes to source and target nodes after an edge is added, for performance reasons.  Use a class or data selector on edges instead, updating the class or data of an edge when your app detects a change in source or target nodes.');
        }
      }
      return true; // success
    };

    /**
     * Get the selector represented as a string.  This value uses default formatting,
     * so things like spacing may differ from the input text passed to the constructor.
     * @returns {string} The selector string
     */
    var toString = function toString() {
      if (this.toStringCache != null) {
        return this.toStringCache;
      }
      var clean = function clean(obj) {
        if (obj == null) {
          return '';
        } else {
          return obj;
        }
      };
      var cleanVal = function cleanVal(val) {
        if (string(val)) {
          return '"' + val + '"';
        } else {
          return clean(val);
        }
      };
      var space = function space(val) {
        return ' ' + val + ' ';
      };
      var checkToString = function checkToString(check, subject) {
        var type = check.type,
          value = check.value;
        switch (type) {
          case Type$2.GROUP:
            {
              var group = clean(value);
              return group.substring(0, group.length - 1);
            }
          case Type$2.DATA_COMPARE:
            {
              var field = check.field,
                operator = check.operator;
              return '[' + field + space(clean(operator)) + cleanVal(value) + ']';
            }
          case Type$2.DATA_BOOL:
            {
              var _operator = check.operator,
                _field = check.field;
              return '[' + clean(_operator) + _field + ']';
            }
          case Type$2.DATA_EXIST:
            {
              var _field2 = check.field;
              return '[' + _field2 + ']';
            }
          case Type$2.META_COMPARE:
            {
              var _operator2 = check.operator,
                _field3 = check.field;
              return '[[' + _field3 + space(clean(_operator2)) + cleanVal(value) + ']]';
            }
          case Type$2.STATE:
            {
              return value;
            }
          case Type$2.ID:
            {
              return '#' + value;
            }
          case Type$2.CLASS:
            {
              return '.' + value;
            }
          case Type$2.PARENT:
          case Type$2.CHILD:
            {
              return queryToString(check.parent, subject) + space('>') + queryToString(check.child, subject);
            }
          case Type$2.ANCESTOR:
          case Type$2.DESCENDANT:
            {
              return queryToString(check.ancestor, subject) + ' ' + queryToString(check.descendant, subject);
            }
          case Type$2.COMPOUND_SPLIT:
            {
              var lhs = queryToString(check.left, subject);
              var sub = queryToString(check.subject, subject);
              var rhs = queryToString(check.right, subject);
              return lhs + (lhs.length > 0 ? ' ' : '') + sub + rhs;
            }
          case Type$2.TRUE:
            {
              return '';
            }
        }
      };
      var queryToString = function queryToString(query, subject) {
        return query.checks.reduce(function (str, chk, i) {
          return str + (subject === query && i === 0 ? '$' : '') + checkToString(chk, subject);
        }, '');
      };
      var str = '';
      for (var i = 0; i < this.length; i++) {
        var query = this[i];
        str += queryToString(query, query.subject);
        if (this.length > 1 && i < this.length - 1) {
          str += ', ';
        }
      }
      this.toStringCache = str;
      return str;
    };
    var parse$1 = {
      parse: parse,
      toString: toString
    };

    var valCmp = function valCmp(fieldVal, operator, value) {
      var matches;
      var isFieldStr = string(fieldVal);
      var isFieldNum = number$1(fieldVal);
      var isValStr = string(value);
      var fieldStr, valStr;
      var caseInsensitive = false;
      var notExpr = false;
      var isIneqCmp = false;
      if (operator.indexOf('!') >= 0) {
        operator = operator.replace('!', '');
        notExpr = true;
      }
      if (operator.indexOf('@') >= 0) {
        operator = operator.replace('@', '');
        caseInsensitive = true;
      }
      if (isFieldStr || isValStr || caseInsensitive) {
        fieldStr = !isFieldStr && !isFieldNum ? '' : '' + fieldVal;
        valStr = '' + value;
      }

      // if we're doing a case insensitive comparison, then we're using a STRING comparison
      // even if we're comparing numbers
      if (caseInsensitive) {
        fieldVal = fieldStr = fieldStr.toLowerCase();
        value = valStr = valStr.toLowerCase();
      }
      switch (operator) {
        case '*=':
          matches = fieldStr.indexOf(valStr) >= 0;
          break;
        case '$=':
          matches = fieldStr.indexOf(valStr, fieldStr.length - valStr.length) >= 0;
          break;
        case '^=':
          matches = fieldStr.indexOf(valStr) === 0;
          break;
        case '=':
          matches = fieldVal === value;
          break;
        case '>':
          isIneqCmp = true;
          matches = fieldVal > value;
          break;
        case '>=':
          isIneqCmp = true;
          matches = fieldVal >= value;
          break;
        case '<':
          isIneqCmp = true;
          matches = fieldVal < value;
          break;
        case '<=':
          isIneqCmp = true;
          matches = fieldVal <= value;
          break;
        default:
          matches = false;
          break;
      }

      // apply the not op, but null vals for inequalities should always stay non-matching
      if (notExpr && (fieldVal != null || !isIneqCmp)) {
        matches = !matches;
      }
      return matches;
    };
    var boolCmp = function boolCmp(fieldVal, operator) {
      switch (operator) {
        case '?':
          return fieldVal ? true : false;
        case '!':
          return fieldVal ? false : true;
        case '^':
          return fieldVal === undefined;
      }
    };
    var existCmp = function existCmp(fieldVal) {
      return fieldVal !== undefined;
    };
    var data$1 = function data(ele, field) {
      return ele.data(field);
    };
    var meta = function meta(ele, field) {
      return ele[field]();
    };

    /** A lookup of `match(check, ele)` functions by `Type` int */
    var match = [];

    /**
     * Returns whether the query matches for the element
     * @param query The `{ type, value, ... }` query object
     * @param ele The element to compare against
    */
    var matches$1 = function matches(query, ele) {
      return query.checks.every(function (chk) {
        return match[chk.type](chk, ele);
      });
    };
    match[Type$2.GROUP] = function (check, ele) {
      var group = check.value;
      return group === '*' || group === ele.group();
    };
    match[Type$2.STATE] = function (check, ele) {
      var stateSelector = check.value;
      return stateSelectorMatches(stateSelector, ele);
    };
    match[Type$2.ID] = function (check, ele) {
      var id = check.value;
      return ele.id() === id;
    };
    match[Type$2.CLASS] = function (check, ele) {
      var cls = check.value;
      return ele.hasClass(cls);
    };
    match[Type$2.META_COMPARE] = function (check, ele) {
      var field = check.field,
        operator = check.operator,
        value = check.value;
      return valCmp(meta(ele, field), operator, value);
    };
    match[Type$2.DATA_COMPARE] = function (check, ele) {
      var field = check.field,
        operator = check.operator,
        value = check.value;
      return valCmp(data$1(ele, field), operator, value);
    };
    match[Type$2.DATA_BOOL] = function (check, ele) {
      var field = check.field,
        operator = check.operator;
      return boolCmp(data$1(ele, field), operator);
    };
    match[Type$2.DATA_EXIST] = function (check, ele) {
      var field = check.field;
        check.operator;
      return existCmp(data$1(ele, field));
    };
    match[Type$2.UNDIRECTED_EDGE] = function (check, ele) {
      var qA = check.nodes[0];
      var qB = check.nodes[1];
      var src = ele.source();
      var tgt = ele.target();
      return matches$1(qA, src) && matches$1(qB, tgt) || matches$1(qB, src) && matches$1(qA, tgt);
    };
    match[Type$2.NODE_NEIGHBOR] = function (check, ele) {
      return matches$1(check.node, ele) && ele.neighborhood().some(function (n) {
        return n.isNode() && matches$1(check.neighbor, n);
      });
    };
    match[Type$2.DIRECTED_EDGE] = function (check, ele) {
      return matches$1(check.source, ele.source()) && matches$1(check.target, ele.target());
    };
    match[Type$2.NODE_SOURCE] = function (check, ele) {
      return matches$1(check.source, ele) && ele.outgoers().some(function (n) {
        return n.isNode() && matches$1(check.target, n);
      });
    };
    match[Type$2.NODE_TARGET] = function (check, ele) {
      return matches$1(check.target, ele) && ele.incomers().some(function (n) {
        return n.isNode() && matches$1(check.source, n);
      });
    };
    match[Type$2.CHILD] = function (check, ele) {
      return matches$1(check.child, ele) && matches$1(check.parent, ele.parent());
    };
    match[Type$2.PARENT] = function (check, ele) {
      return matches$1(check.parent, ele) && ele.children().some(function (c) {
        return matches$1(check.child, c);
      });
    };
    match[Type$2.DESCENDANT] = function (check, ele) {
      return matches$1(check.descendant, ele) && ele.ancestors().some(function (a) {
        return matches$1(check.ancestor, a);
      });
    };
    match[Type$2.ANCESTOR] = function (check, ele) {
      return matches$1(check.ancestor, ele) && ele.descendants().some(function (d) {
        return matches$1(check.descendant, d);
      });
    };
    match[Type$2.COMPOUND_SPLIT] = function (check, ele) {
      return matches$1(check.subject, ele) && matches$1(check.left, ele) && matches$1(check.right, ele);
    };
    match[Type$2.TRUE] = function () {
      return true;
    };
    match[Type$2.COLLECTION] = function (check, ele) {
      var collection = check.value;
      return collection.has(ele);
    };
    match[Type$2.FILTER] = function (check, ele) {
      var filter = check.value;
      return filter(ele);
    };

    // filter an existing collection
    var filter = function filter(collection) {
      var self = this;

      // for 1 id #foo queries, just get the element
      if (self.length === 1 && self[0].checks.length === 1 && self[0].checks[0].type === Type$2.ID) {
        return collection.getElementById(self[0].checks[0].value).collection();
      }
      var selectorFunction = function selectorFunction(element) {
        for (var j = 0; j < self.length; j++) {
          var query = self[j];
          if (matches$1(query, element)) {
            return true;
          }
        }
        return false;
      };
      if (self.text() == null) {
        selectorFunction = function selectorFunction() {
          return true;
        };
      }
      return collection.filter(selectorFunction);
    }; // filter

    // does selector match a single element?
    var matches = function matches(ele) {
      var self = this;
      for (var j = 0; j < self.length; j++) {
        var query = self[j];
        if (matches$1(query, ele)) {
          return true;
        }
      }
      return false;
    }; // matches

    var matching = {
      matches: matches,
      filter: filter
    };

    var Selector = function Selector(selector) {
      this.inputText = selector;
      this.currentSubject = null;
      this.compoundCount = 0;
      this.edgeCount = 0;
      this.length = 0;
      if (selector == null || string(selector) && selector.match(/^\s*$/)) ; else if (elementOrCollection(selector)) {
        this.addQuery({
          checks: [{
            type: Type$2.COLLECTION,
            value: selector.collection()
          }]
        });
      } else if (fn$6(selector)) {
        this.addQuery({
          checks: [{
            type: Type$2.FILTER,
            value: selector
          }]
        });
      } else if (string(selector)) {
        if (!this.parse(selector)) {
          this.invalid = true;
        }
      } else {
        error('A selector must be created from a string; found ');
      }
    };
    var selfn = Selector.prototype;
    [parse$1, matching].forEach(function (p) {
      return extend$1(selfn, p);
    });
    selfn.text = function () {
      return this.inputText;
    };
    selfn.size = function () {
      return this.length;
    };
    selfn.eq = function (i) {
      return this[i];
    };
    selfn.sameText = function (otherSel) {
      return !this.invalid && !otherSel.invalid && this.text() === otherSel.text();
    };
    selfn.addQuery = function (q) {
      this[this.length++] = q;
    };
    selfn.selector = selfn.toString;

    var elesfn$g = {
      allAre: function allAre(selector) {
        var selObj = new Selector(selector);
        return this.every(function (ele) {
          return selObj.matches(ele);
        });
      },
      is: function is(selector) {
        var selObj = new Selector(selector);
        return this.some(function (ele) {
          return selObj.matches(ele);
        });
      },
      some: function some(fn, thisArg) {
        for (var i = 0; i < this.length; i++) {
          var ret = !thisArg ? fn(this[i], i, this) : fn.apply(thisArg, [this[i], i, this]);
          if (ret) {
            return true;
          }
        }
        return false;
      },
      every: function every(fn, thisArg) {
        for (var i = 0; i < this.length; i++) {
          var ret = !thisArg ? fn(this[i], i, this) : fn.apply(thisArg, [this[i], i, this]);
          if (!ret) {
            return false;
          }
        }
        return true;
      },
      same: function same(collection) {
        // cheap collection ref check
        if (this === collection) {
          return true;
        }
        collection = this.cy().collection(collection);
        var thisLength = this.length;
        var collectionLength = collection.length;

        // cheap length check
        if (thisLength !== collectionLength) {
          return false;
        }

        // cheap element ref check
        if (thisLength === 1) {
          return this[0] === collection[0];
        }
        return this.every(function (ele) {
          return collection.hasElementWithId(ele.id());
        });
      },
      anySame: function anySame(collection) {
        collection = this.cy().collection(collection);
        return this.some(function (ele) {
          return collection.hasElementWithId(ele.id());
        });
      },
      allAreNeighbors: function allAreNeighbors(collection) {
        collection = this.cy().collection(collection);
        var nhood = this.neighborhood();
        return collection.every(function (ele) {
          return nhood.hasElementWithId(ele.id());
        });
      },
      contains: function contains(collection) {
        collection = this.cy().collection(collection);
        var self = this;
        return collection.every(function (ele) {
          return self.hasElementWithId(ele.id());
        });
      }
    };
    elesfn$g.allAreNeighbours = elesfn$g.allAreNeighbors;
    elesfn$g.has = elesfn$g.contains;
    elesfn$g.equal = elesfn$g.equals = elesfn$g.same;

    var cache = function cache(fn, name) {
      return function traversalCache(arg1, arg2, arg3, arg4) {
        var selectorOrEles = arg1;
        var eles = this;
        var key;
        if (selectorOrEles == null) {
          key = '';
        } else if (elementOrCollection(selectorOrEles) && selectorOrEles.length === 1) {
          key = selectorOrEles.id();
        }
        if (eles.length === 1 && key) {
          var _p = eles[0]._private;
          var tch = _p.traversalCache = _p.traversalCache || {};
          var ch = tch[name] = tch[name] || [];
          var hash = hashString(key);
          var cacheHit = ch[hash];
          if (cacheHit) {
            return cacheHit;
          } else {
            return ch[hash] = fn.call(eles, arg1, arg2, arg3, arg4);
          }
        } else {
          return fn.call(eles, arg1, arg2, arg3, arg4);
        }
      };
    };

    var elesfn$f = {
      parent: function parent(selector) {
        var parents = [];

        // optimisation for single ele call
        if (this.length === 1) {
          var parent = this[0]._private.parent;
          if (parent) {
            return parent;
          }
        }
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          var _parent = ele._private.parent;
          if (_parent) {
            parents.push(_parent);
          }
        }
        return this.spawn(parents, true).filter(selector);
      },
      parents: function parents(selector) {
        var parents = [];
        var eles = this.parent();
        while (eles.nonempty()) {
          for (var i = 0; i < eles.length; i++) {
            var ele = eles[i];
            parents.push(ele);
          }
          eles = eles.parent();
        }
        return this.spawn(parents, true).filter(selector);
      },
      commonAncestors: function commonAncestors(selector) {
        var ancestors;
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          var parents = ele.parents();
          ancestors = ancestors || parents;
          ancestors = ancestors.intersect(parents); // current list must be common with current ele parents set
        }

        return ancestors.filter(selector);
      },
      orphans: function orphans(selector) {
        return this.stdFilter(function (ele) {
          return ele.isOrphan();
        }).filter(selector);
      },
      nonorphans: function nonorphans(selector) {
        return this.stdFilter(function (ele) {
          return ele.isChild();
        }).filter(selector);
      },
      children: cache(function (selector) {
        var children = [];
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          var eleChildren = ele._private.children;
          for (var j = 0; j < eleChildren.length; j++) {
            children.push(eleChildren[j]);
          }
        }
        return this.spawn(children, true).filter(selector);
      }, 'children'),
      siblings: function siblings(selector) {
        return this.parent().children().not(this).filter(selector);
      },
      isParent: function isParent() {
        var ele = this[0];
        if (ele) {
          return ele.isNode() && ele._private.children.length !== 0;
        }
      },
      isChildless: function isChildless() {
        var ele = this[0];
        if (ele) {
          return ele.isNode() && ele._private.children.length === 0;
        }
      },
      isChild: function isChild() {
        var ele = this[0];
        if (ele) {
          return ele.isNode() && ele._private.parent != null;
        }
      },
      isOrphan: function isOrphan() {
        var ele = this[0];
        if (ele) {
          return ele.isNode() && ele._private.parent == null;
        }
      },
      descendants: function descendants(selector) {
        var elements = [];
        function add(eles) {
          for (var i = 0; i < eles.length; i++) {
            var ele = eles[i];
            elements.push(ele);
            if (ele.children().nonempty()) {
              add(ele.children());
            }
          }
        }
        add(this.children());
        return this.spawn(elements, true).filter(selector);
      }
    };
    function forEachCompound(eles, fn, includeSelf, recursiveStep) {
      var q = [];
      var did = new Set$1();
      var cy = eles.cy();
      var hasCompounds = cy.hasCompoundNodes();
      for (var i = 0; i < eles.length; i++) {
        var ele = eles[i];
        if (includeSelf) {
          q.push(ele);
        } else if (hasCompounds) {
          recursiveStep(q, did, ele);
        }
      }
      while (q.length > 0) {
        var _ele = q.shift();
        fn(_ele);
        did.add(_ele.id());
        if (hasCompounds) {
          recursiveStep(q, did, _ele);
        }
      }
      return eles;
    }
    function addChildren(q, did, ele) {
      if (ele.isParent()) {
        var children = ele._private.children;
        for (var i = 0; i < children.length; i++) {
          var child = children[i];
          if (!did.has(child.id())) {
            q.push(child);
          }
        }
      }
    }

    // very efficient version of eles.add( eles.descendants() ).forEach()
    // for internal use
    elesfn$f.forEachDown = function (fn) {
      var includeSelf = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
      return forEachCompound(this, fn, includeSelf, addChildren);
    };
    function addParent(q, did, ele) {
      if (ele.isChild()) {
        var parent = ele._private.parent;
        if (!did.has(parent.id())) {
          q.push(parent);
        }
      }
    }
    elesfn$f.forEachUp = function (fn) {
      var includeSelf = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
      return forEachCompound(this, fn, includeSelf, addParent);
    };
    function addParentAndChildren(q, did, ele) {
      addParent(q, did, ele);
      addChildren(q, did, ele);
    }
    elesfn$f.forEachUpAndDown = function (fn) {
      var includeSelf = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
      return forEachCompound(this, fn, includeSelf, addParentAndChildren);
    };

    // aliases
    elesfn$f.ancestors = elesfn$f.parents;

    var fn$5, elesfn$e;
    fn$5 = elesfn$e = {
      data: define.data({
        field: 'data',
        bindingEvent: 'data',
        allowBinding: true,
        allowSetting: true,
        settingEvent: 'data',
        settingTriggersEvent: true,
        triggerFnName: 'trigger',
        allowGetting: true,
        immutableKeys: {
          'id': true,
          'source': true,
          'target': true,
          'parent': true
        },
        updateStyle: true
      }),
      removeData: define.removeData({
        field: 'data',
        event: 'data',
        triggerFnName: 'trigger',
        triggerEvent: true,
        immutableKeys: {
          'id': true,
          'source': true,
          'target': true,
          'parent': true
        },
        updateStyle: true
      }),
      scratch: define.data({
        field: 'scratch',
        bindingEvent: 'scratch',
        allowBinding: true,
        allowSetting: true,
        settingEvent: 'scratch',
        settingTriggersEvent: true,
        triggerFnName: 'trigger',
        allowGetting: true,
        updateStyle: true
      }),
      removeScratch: define.removeData({
        field: 'scratch',
        event: 'scratch',
        triggerFnName: 'trigger',
        triggerEvent: true,
        updateStyle: true
      }),
      rscratch: define.data({
        field: 'rscratch',
        allowBinding: false,
        allowSetting: true,
        settingTriggersEvent: false,
        allowGetting: true
      }),
      removeRscratch: define.removeData({
        field: 'rscratch',
        triggerEvent: false
      }),
      id: function id() {
        var ele = this[0];
        if (ele) {
          return ele._private.data.id;
        }
      }
    };

    // aliases
    fn$5.attr = fn$5.data;
    fn$5.removeAttr = fn$5.removeData;
    var data = elesfn$e;

    var elesfn$d = {};
    function defineDegreeFunction(callback) {
      return function (includeLoops) {
        var self = this;
        if (includeLoops === undefined) {
          includeLoops = true;
        }
        if (self.length === 0) {
          return;
        }
        if (self.isNode() && !self.removed()) {
          var degree = 0;
          var node = self[0];
          var connectedEdges = node._private.edges;
          for (var i = 0; i < connectedEdges.length; i++) {
            var edge = connectedEdges[i];
            if (!includeLoops && edge.isLoop()) {
              continue;
            }
            degree += callback(node, edge);
          }
          return degree;
        } else {
          return;
        }
      };
    }
    extend$1(elesfn$d, {
      degree: defineDegreeFunction(function (node, edge) {
        if (edge.source().same(edge.target())) {
          return 2;
        } else {
          return 1;
        }
      }),
      indegree: defineDegreeFunction(function (node, edge) {
        if (edge.target().same(node)) {
          return 1;
        } else {
          return 0;
        }
      }),
      outdegree: defineDegreeFunction(function (node, edge) {
        if (edge.source().same(node)) {
          return 1;
        } else {
          return 0;
        }
      })
    });
    function defineDegreeBoundsFunction(degreeFn, callback) {
      return function (includeLoops) {
        var ret;
        var nodes = this.nodes();
        for (var i = 0; i < nodes.length; i++) {
          var ele = nodes[i];
          var degree = ele[degreeFn](includeLoops);
          if (degree !== undefined && (ret === undefined || callback(degree, ret))) {
            ret = degree;
          }
        }
        return ret;
      };
    }
    extend$1(elesfn$d, {
      minDegree: defineDegreeBoundsFunction('degree', function (degree, min) {
        return degree < min;
      }),
      maxDegree: defineDegreeBoundsFunction('degree', function (degree, max) {
        return degree > max;
      }),
      minIndegree: defineDegreeBoundsFunction('indegree', function (degree, min) {
        return degree < min;
      }),
      maxIndegree: defineDegreeBoundsFunction('indegree', function (degree, max) {
        return degree > max;
      }),
      minOutdegree: defineDegreeBoundsFunction('outdegree', function (degree, min) {
        return degree < min;
      }),
      maxOutdegree: defineDegreeBoundsFunction('outdegree', function (degree, max) {
        return degree > max;
      })
    });
    extend$1(elesfn$d, {
      totalDegree: function totalDegree(includeLoops) {
        var total = 0;
        var nodes = this.nodes();
        for (var i = 0; i < nodes.length; i++) {
          total += nodes[i].degree(includeLoops);
        }
        return total;
      }
    });

    var fn$4, elesfn$c;
    var beforePositionSet = function beforePositionSet(eles, newPos, silent) {
      for (var i = 0; i < eles.length; i++) {
        var ele = eles[i];
        if (!ele.locked()) {
          var oldPos = ele._private.position;
          var delta = {
            x: newPos.x != null ? newPos.x - oldPos.x : 0,
            y: newPos.y != null ? newPos.y - oldPos.y : 0
          };
          if (ele.isParent() && !(delta.x === 0 && delta.y === 0)) {
            ele.children().shift(delta, silent);
          }
          ele.dirtyBoundingBoxCache();
        }
      }
    };
    var positionDef = {
      field: 'position',
      bindingEvent: 'position',
      allowBinding: true,
      allowSetting: true,
      settingEvent: 'position',
      settingTriggersEvent: true,
      triggerFnName: 'emitAndNotify',
      allowGetting: true,
      validKeys: ['x', 'y'],
      beforeGet: function beforeGet(ele) {
        ele.updateCompoundBounds();
      },
      beforeSet: function beforeSet(eles, newPos) {
        beforePositionSet(eles, newPos, false);
      },
      onSet: function onSet(eles) {
        eles.dirtyCompoundBoundsCache();
      },
      canSet: function canSet(ele) {
        return !ele.locked();
      }
    };
    fn$4 = elesfn$c = {
      position: define.data(positionDef),
      // position but no notification to renderer
      silentPosition: define.data(extend$1({}, positionDef, {
        allowBinding: false,
        allowSetting: true,
        settingTriggersEvent: false,
        allowGetting: false,
        beforeSet: function beforeSet(eles, newPos) {
          beforePositionSet(eles, newPos, true);
        },
        onSet: function onSet(eles) {
          eles.dirtyCompoundBoundsCache();
        }
      })),
      positions: function positions(pos, silent) {
        if (plainObject(pos)) {
          if (silent) {
            this.silentPosition(pos);
          } else {
            this.position(pos);
          }
        } else if (fn$6(pos)) {
          var _fn = pos;
          var cy = this.cy();
          cy.startBatch();
          for (var i = 0; i < this.length; i++) {
            var ele = this[i];
            var _pos = void 0;
            if (_pos = _fn(ele, i)) {
              if (silent) {
                ele.silentPosition(_pos);
              } else {
                ele.position(_pos);
              }
            }
          }
          cy.endBatch();
        }
        return this; // chaining
      },

      silentPositions: function silentPositions(pos) {
        return this.positions(pos, true);
      },
      shift: function shift(dim, val, silent) {
        var delta;
        if (plainObject(dim)) {
          delta = {
            x: number$1(dim.x) ? dim.x : 0,
            y: number$1(dim.y) ? dim.y : 0
          };
          silent = val;
        } else if (string(dim) && number$1(val)) {
          delta = {
            x: 0,
            y: 0
          };
          delta[dim] = val;
        }
        if (delta != null) {
          var cy = this.cy();
          cy.startBatch();
          for (var i = 0; i < this.length; i++) {
            var ele = this[i];

            // exclude any node that is a descendant of the calling collection
            if (cy.hasCompoundNodes() && ele.isChild() && ele.ancestors().anySame(this)) {
              continue;
            }
            var pos = ele.position();
            var newPos = {
              x: pos.x + delta.x,
              y: pos.y + delta.y
            };
            if (silent) {
              ele.silentPosition(newPos);
            } else {
              ele.position(newPos);
            }
          }
          cy.endBatch();
        }
        return this;
      },
      silentShift: function silentShift(dim, val) {
        if (plainObject(dim)) {
          this.shift(dim, true);
        } else if (string(dim) && number$1(val)) {
          this.shift(dim, val, true);
        }
        return this;
      },
      // get/set the rendered (i.e. on screen) positon of the element
      renderedPosition: function renderedPosition(dim, val) {
        var ele = this[0];
        var cy = this.cy();
        var zoom = cy.zoom();
        var pan = cy.pan();
        var rpos = plainObject(dim) ? dim : undefined;
        var setting = rpos !== undefined || val !== undefined && string(dim);
        if (ele && ele.isNode()) {
          // must have an element and must be a node to return position
          if (setting) {
            for (var i = 0; i < this.length; i++) {
              var _ele = this[i];
              if (val !== undefined) {
                // set one dimension
                _ele.position(dim, (val - pan[dim]) / zoom);
              } else if (rpos !== undefined) {
                // set whole position
                _ele.position(renderedToModelPosition(rpos, zoom, pan));
              }
            }
          } else {
            // getting
            var pos = ele.position();
            rpos = modelToRenderedPosition(pos, zoom, pan);
            if (dim === undefined) {
              // then return the whole rendered position
              return rpos;
            } else {
              // then return the specified dimension
              return rpos[dim];
            }
          }
        } else if (!setting) {
          return undefined; // for empty collection case
        }

        return this; // chaining
      },

      // get/set the position relative to the parent
      relativePosition: function relativePosition(dim, val) {
        var ele = this[0];
        var cy = this.cy();
        var ppos = plainObject(dim) ? dim : undefined;
        var setting = ppos !== undefined || val !== undefined && string(dim);
        var hasCompoundNodes = cy.hasCompoundNodes();
        if (ele && ele.isNode()) {
          // must have an element and must be a node to return position
          if (setting) {
            for (var i = 0; i < this.length; i++) {
              var _ele2 = this[i];
              var parent = hasCompoundNodes ? _ele2.parent() : null;
              var hasParent = parent && parent.length > 0;
              var relativeToParent = hasParent;
              if (hasParent) {
                parent = parent[0];
              }
              var origin = relativeToParent ? parent.position() : {
                x: 0,
                y: 0
              };
              if (val !== undefined) {
                // set one dimension
                _ele2.position(dim, val + origin[dim]);
              } else if (ppos !== undefined) {
                // set whole position
                _ele2.position({
                  x: ppos.x + origin.x,
                  y: ppos.y + origin.y
                });
              }
            }
          } else {
            // getting
            var pos = ele.position();
            var _parent = hasCompoundNodes ? ele.parent() : null;
            var _hasParent = _parent && _parent.length > 0;
            var _relativeToParent = _hasParent;
            if (_hasParent) {
              _parent = _parent[0];
            }
            var _origin = _relativeToParent ? _parent.position() : {
              x: 0,
              y: 0
            };
            ppos = {
              x: pos.x - _origin.x,
              y: pos.y - _origin.y
            };
            if (dim === undefined) {
              // then return the whole rendered position
              return ppos;
            } else {
              // then return the specified dimension
              return ppos[dim];
            }
          }
        } else if (!setting) {
          return undefined; // for empty collection case
        }

        return this; // chaining
      }
    };

    // aliases
    fn$4.modelPosition = fn$4.point = fn$4.position;
    fn$4.modelPositions = fn$4.points = fn$4.positions;
    fn$4.renderedPoint = fn$4.renderedPosition;
    fn$4.relativePoint = fn$4.relativePosition;
    var position = elesfn$c;

    var fn$3, elesfn$b;
    fn$3 = elesfn$b = {};
    elesfn$b.renderedBoundingBox = function (options) {
      var bb = this.boundingBox(options);
      var cy = this.cy();
      var zoom = cy.zoom();
      var pan = cy.pan();
      var x1 = bb.x1 * zoom + pan.x;
      var x2 = bb.x2 * zoom + pan.x;
      var y1 = bb.y1 * zoom + pan.y;
      var y2 = bb.y2 * zoom + pan.y;
      return {
        x1: x1,
        x2: x2,
        y1: y1,
        y2: y2,
        w: x2 - x1,
        h: y2 - y1
      };
    };
    elesfn$b.dirtyCompoundBoundsCache = function () {
      var silent = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
      var cy = this.cy();
      if (!cy.styleEnabled() || !cy.hasCompoundNodes()) {
        return this;
      }
      this.forEachUp(function (ele) {
        if (ele.isParent()) {
          var _p = ele._private;
          _p.compoundBoundsClean = false;
          _p.bbCache = null;
          if (!silent) {
            ele.emitAndNotify('bounds');
          }
        }
      });
      return this;
    };
    elesfn$b.updateCompoundBounds = function () {
      var force = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
      var cy = this.cy();

      // not possible to do on non-compound graphs or with the style disabled
      if (!cy.styleEnabled() || !cy.hasCompoundNodes()) {
        return this;
      }

      // save cycles when batching -- but bounds will be stale (or not exist yet)
      if (!force && cy.batching()) {
        return this;
      }
      function update(parent) {
        if (!parent.isParent()) {
          return;
        }
        var _p = parent._private;
        var children = parent.children();
        var includeLabels = parent.pstyle('compound-sizing-wrt-labels').value === 'include';
        var min = {
          width: {
            val: parent.pstyle('min-width').pfValue,
            left: parent.pstyle('min-width-bias-left'),
            right: parent.pstyle('min-width-bias-right')
          },
          height: {
            val: parent.pstyle('min-height').pfValue,
            top: parent.pstyle('min-height-bias-top'),
            bottom: parent.pstyle('min-height-bias-bottom')
          }
        };
        var bb = children.boundingBox({
          includeLabels: includeLabels,
          includeOverlays: false,
          // updating the compound bounds happens outside of the regular
          // cache cycle (i.e. before fired events)
          useCache: false
        });
        var pos = _p.position;

        // if children take up zero area then keep position and fall back on stylesheet w/h
        if (bb.w === 0 || bb.h === 0) {
          bb = {
            w: parent.pstyle('width').pfValue,
            h: parent.pstyle('height').pfValue
          };
          bb.x1 = pos.x - bb.w / 2;
          bb.x2 = pos.x + bb.w / 2;
          bb.y1 = pos.y - bb.h / 2;
          bb.y2 = pos.y + bb.h / 2;
        }
        function computeBiasValues(propDiff, propBias, propBiasComplement) {
          var biasDiff = 0;
          var biasComplementDiff = 0;
          var biasTotal = propBias + propBiasComplement;
          if (propDiff > 0 && biasTotal > 0) {
            biasDiff = propBias / biasTotal * propDiff;
            biasComplementDiff = propBiasComplement / biasTotal * propDiff;
          }
          return {
            biasDiff: biasDiff,
            biasComplementDiff: biasComplementDiff
          };
        }
        function computePaddingValues(width, height, paddingObject, relativeTo) {
          // Assuming percentage is number from 0 to 1
          if (paddingObject.units === '%') {
            switch (relativeTo) {
              case 'width':
                return width > 0 ? paddingObject.pfValue * width : 0;
              case 'height':
                return height > 0 ? paddingObject.pfValue * height : 0;
              case 'average':
                return width > 0 && height > 0 ? paddingObject.pfValue * (width + height) / 2 : 0;
              case 'min':
                return width > 0 && height > 0 ? width > height ? paddingObject.pfValue * height : paddingObject.pfValue * width : 0;
              case 'max':
                return width > 0 && height > 0 ? width > height ? paddingObject.pfValue * width : paddingObject.pfValue * height : 0;
              default:
                return 0;
            }
          } else if (paddingObject.units === 'px') {
            return paddingObject.pfValue;
          } else {
            return 0;
          }
        }
        var leftVal = min.width.left.value;
        if (min.width.left.units === 'px' && min.width.val > 0) {
          leftVal = leftVal * 100 / min.width.val;
        }
        var rightVal = min.width.right.value;
        if (min.width.right.units === 'px' && min.width.val > 0) {
          rightVal = rightVal * 100 / min.width.val;
        }
        var topVal = min.height.top.value;
        if (min.height.top.units === 'px' && min.height.val > 0) {
          topVal = topVal * 100 / min.height.val;
        }
        var bottomVal = min.height.bottom.value;
        if (min.height.bottom.units === 'px' && min.height.val > 0) {
          bottomVal = bottomVal * 100 / min.height.val;
        }
        var widthBiasDiffs = computeBiasValues(min.width.val - bb.w, leftVal, rightVal);
        var diffLeft = widthBiasDiffs.biasDiff;
        var diffRight = widthBiasDiffs.biasComplementDiff;
        var heightBiasDiffs = computeBiasValues(min.height.val - bb.h, topVal, bottomVal);
        var diffTop = heightBiasDiffs.biasDiff;
        var diffBottom = heightBiasDiffs.biasComplementDiff;
        _p.autoPadding = computePaddingValues(bb.w, bb.h, parent.pstyle('padding'), parent.pstyle('padding-relative-to').value);
        _p.autoWidth = Math.max(bb.w, min.width.val);
        pos.x = (-diffLeft + bb.x1 + bb.x2 + diffRight) / 2;
        _p.autoHeight = Math.max(bb.h, min.height.val);
        pos.y = (-diffTop + bb.y1 + bb.y2 + diffBottom) / 2;
      }
      for (var i = 0; i < this.length; i++) {
        var ele = this[i];
        var _p = ele._private;
        if (!_p.compoundBoundsClean || force) {
          update(ele);
          if (!cy.batching()) {
            _p.compoundBoundsClean = true;
          }
        }
      }
      return this;
    };
    var noninf = function noninf(x) {
      if (x === Infinity || x === -Infinity) {
        return 0;
      }
      return x;
    };
    var updateBounds = function updateBounds(b, x1, y1, x2, y2) {
      // don't update with zero area boxes
      if (x2 - x1 === 0 || y2 - y1 === 0) {
        return;
      }

      // don't update with null dim
      if (x1 == null || y1 == null || x2 == null || y2 == null) {
        return;
      }
      b.x1 = x1 < b.x1 ? x1 : b.x1;
      b.x2 = x2 > b.x2 ? x2 : b.x2;
      b.y1 = y1 < b.y1 ? y1 : b.y1;
      b.y2 = y2 > b.y2 ? y2 : b.y2;
      b.w = b.x2 - b.x1;
      b.h = b.y2 - b.y1;
    };
    var updateBoundsFromBox = function updateBoundsFromBox(b, b2) {
      if (b2 == null) {
        return b;
      }
      return updateBounds(b, b2.x1, b2.y1, b2.x2, b2.y2);
    };
    var prefixedProperty = function prefixedProperty(obj, field, prefix) {
      return getPrefixedProperty(obj, field, prefix);
    };
    var updateBoundsFromArrow = function updateBoundsFromArrow(bounds, ele, prefix) {
      if (ele.cy().headless()) {
        return;
      }
      var _p = ele._private;
      var rstyle = _p.rstyle;
      var halfArW = rstyle.arrowWidth / 2;
      var arrowType = ele.pstyle(prefix + '-arrow-shape').value;
      var x;
      var y;
      if (arrowType !== 'none') {
        if (prefix === 'source') {
          x = rstyle.srcX;
          y = rstyle.srcY;
        } else if (prefix === 'target') {
          x = rstyle.tgtX;
          y = rstyle.tgtY;
        } else {
          x = rstyle.midX;
          y = rstyle.midY;
        }

        // always store the individual arrow bounds
        var bbs = _p.arrowBounds = _p.arrowBounds || {};
        var bb = bbs[prefix] = bbs[prefix] || {};
        bb.x1 = x - halfArW;
        bb.y1 = y - halfArW;
        bb.x2 = x + halfArW;
        bb.y2 = y + halfArW;
        bb.w = bb.x2 - bb.x1;
        bb.h = bb.y2 - bb.y1;
        expandBoundingBox(bb, 1);
        updateBounds(bounds, bb.x1, bb.y1, bb.x2, bb.y2);
      }
    };
    var updateBoundsFromLabel = function updateBoundsFromLabel(bounds, ele, prefix) {
      if (ele.cy().headless()) {
        return;
      }
      var prefixDash;
      if (prefix) {
        prefixDash = prefix + '-';
      } else {
        prefixDash = '';
      }
      var _p = ele._private;
      var rstyle = _p.rstyle;
      var label = ele.pstyle(prefixDash + 'label').strValue;
      if (label) {
        var halign = ele.pstyle('text-halign');
        var valign = ele.pstyle('text-valign');
        var labelWidth = prefixedProperty(rstyle, 'labelWidth', prefix);
        var labelHeight = prefixedProperty(rstyle, 'labelHeight', prefix);
        var labelX = prefixedProperty(rstyle, 'labelX', prefix);
        var labelY = prefixedProperty(rstyle, 'labelY', prefix);
        var marginX = ele.pstyle(prefixDash + 'text-margin-x').pfValue;
        var marginY = ele.pstyle(prefixDash + 'text-margin-y').pfValue;
        var isEdge = ele.isEdge();
        var rotation = ele.pstyle(prefixDash + 'text-rotation');
        var outlineWidth = ele.pstyle('text-outline-width').pfValue;
        var borderWidth = ele.pstyle('text-border-width').pfValue;
        var halfBorderWidth = borderWidth / 2;
        var padding = ele.pstyle('text-background-padding').pfValue;
        var marginOfError = 2; // expand to work around browser dimension inaccuracies

        var lh = labelHeight;
        var lw = labelWidth;
        var lw_2 = lw / 2;
        var lh_2 = lh / 2;
        var lx1, lx2, ly1, ly2;
        if (isEdge) {
          lx1 = labelX - lw_2;
          lx2 = labelX + lw_2;
          ly1 = labelY - lh_2;
          ly2 = labelY + lh_2;
        } else {
          switch (halign.value) {
            case 'left':
              lx1 = labelX - lw;
              lx2 = labelX;
              break;
            case 'center':
              lx1 = labelX - lw_2;
              lx2 = labelX + lw_2;
              break;
            case 'right':
              lx1 = labelX;
              lx2 = labelX + lw;
              break;
          }
          switch (valign.value) {
            case 'top':
              ly1 = labelY - lh;
              ly2 = labelY;
              break;
            case 'center':
              ly1 = labelY - lh_2;
              ly2 = labelY + lh_2;
              break;
            case 'bottom':
              ly1 = labelY;
              ly2 = labelY + lh;
              break;
          }
        }

        // shift by margin and expand by outline and border
        lx1 += marginX - Math.max(outlineWidth, halfBorderWidth) - padding - marginOfError;
        lx2 += marginX + Math.max(outlineWidth, halfBorderWidth) + padding + marginOfError;
        ly1 += marginY - Math.max(outlineWidth, halfBorderWidth) - padding - marginOfError;
        ly2 += marginY + Math.max(outlineWidth, halfBorderWidth) + padding + marginOfError;

        // always store the unrotated label bounds separately
        var bbPrefix = prefix || 'main';
        var bbs = _p.labelBounds;
        var bb = bbs[bbPrefix] = bbs[bbPrefix] || {};
        bb.x1 = lx1;
        bb.y1 = ly1;
        bb.x2 = lx2;
        bb.y2 = ly2;
        bb.w = lx2 - lx1;
        bb.h = ly2 - ly1;
        var isAutorotate = isEdge && rotation.strValue === 'autorotate';
        var isPfValue = rotation.pfValue != null && rotation.pfValue !== 0;
        if (isAutorotate || isPfValue) {
          var theta = isAutorotate ? prefixedProperty(_p.rstyle, 'labelAngle', prefix) : rotation.pfValue;
          var cos = Math.cos(theta);
          var sin = Math.sin(theta);

          // rotation point (default value for center-center)
          var xo = (lx1 + lx2) / 2;
          var yo = (ly1 + ly2) / 2;
          if (!isEdge) {
            switch (halign.value) {
              case 'left':
                xo = lx2;
                break;
              case 'right':
                xo = lx1;
                break;
            }
            switch (valign.value) {
              case 'top':
                yo = ly2;
                break;
              case 'bottom':
                yo = ly1;
                break;
            }
          }
          var rotate = function rotate(x, y) {
            x = x - xo;
            y = y - yo;
            return {
              x: x * cos - y * sin + xo,
              y: x * sin + y * cos + yo
            };
          };
          var px1y1 = rotate(lx1, ly1);
          var px1y2 = rotate(lx1, ly2);
          var px2y1 = rotate(lx2, ly1);
          var px2y2 = rotate(lx2, ly2);
          lx1 = Math.min(px1y1.x, px1y2.x, px2y1.x, px2y2.x);
          lx2 = Math.max(px1y1.x, px1y2.x, px2y1.x, px2y2.x);
          ly1 = Math.min(px1y1.y, px1y2.y, px2y1.y, px2y2.y);
          ly2 = Math.max(px1y1.y, px1y2.y, px2y1.y, px2y2.y);
        }
        var bbPrefixRot = bbPrefix + 'Rot';
        var bbRot = bbs[bbPrefixRot] = bbs[bbPrefixRot] || {};
        bbRot.x1 = lx1;
        bbRot.y1 = ly1;
        bbRot.x2 = lx2;
        bbRot.y2 = ly2;
        bbRot.w = lx2 - lx1;
        bbRot.h = ly2 - ly1;
        updateBounds(bounds, lx1, ly1, lx2, ly2);
        updateBounds(_p.labelBounds.all, lx1, ly1, lx2, ly2);
      }
      return bounds;
    };
    var updateBoundsFromOutline = function updateBoundsFromOutline(bounds, ele) {
      if (ele.cy().headless()) {
        return;
      }
      var outlineOpacity = ele.pstyle('outline-opacity').value;
      var outlineWidth = ele.pstyle('outline-width').value;
      if (outlineOpacity > 0 && outlineWidth > 0) {
        var outlineOffset = ele.pstyle('outline-offset').value;
        var nodeShape = ele.pstyle('shape').value;
        var outlineSize = outlineWidth + outlineOffset;
        var scaleX = (bounds.w + outlineSize * 2) / bounds.w;
        var scaleY = (bounds.h + outlineSize * 2) / bounds.h;
        var xOffset = 0;
        var yOffset = 0;
        if (["diamond", "pentagon", "round-triangle"].includes(nodeShape)) {
          scaleX = (bounds.w + outlineSize * 2.4) / bounds.w;
          yOffset = -outlineSize / 3.6;
        } else if (["concave-hexagon", "rhomboid", "right-rhomboid"].includes(nodeShape)) {
          scaleX = (bounds.w + outlineSize * 2.4) / bounds.w;
        } else if (nodeShape === "star") {
          scaleX = (bounds.w + outlineSize * 2.8) / bounds.w;
          scaleY = (bounds.h + outlineSize * 2.6) / bounds.h;
          yOffset = -outlineSize / 3.8;
        } else if (nodeShape === "triangle") {
          scaleX = (bounds.w + outlineSize * 2.8) / bounds.w;
          scaleY = (bounds.h + outlineSize * 2.4) / bounds.h;
          yOffset = -outlineSize / 1.4;
        } else if (nodeShape === "vee") {
          scaleX = (bounds.w + outlineSize * 4.4) / bounds.w;
          scaleY = (bounds.h + outlineSize * 3.8) / bounds.h;
          yOffset = -outlineSize * .5;
        }
        var hDelta = bounds.h * scaleY - bounds.h;
        var wDelta = bounds.w * scaleX - bounds.w;
        expandBoundingBoxSides(bounds, [Math.ceil(hDelta / 2), Math.ceil(wDelta / 2)]);
        if (xOffset != 0 || yOffset !== 0) {
          var oBounds = shiftBoundingBox(bounds, xOffset, yOffset);
          updateBoundingBox(bounds, oBounds);
        }
      }
    };

    // get the bounding box of the elements (in raw model position)
    var boundingBoxImpl = function boundingBoxImpl(ele, options) {
      var cy = ele._private.cy;
      var styleEnabled = cy.styleEnabled();
      var headless = cy.headless();
      var bounds = makeBoundingBox();
      var _p = ele._private;
      var isNode = ele.isNode();
      var isEdge = ele.isEdge();
      var ex1, ex2, ey1, ey2; // extrema of body / lines
      var x, y; // node pos
      var rstyle = _p.rstyle;
      var manualExpansion = isNode && styleEnabled ? ele.pstyle('bounds-expansion').pfValue : [0];

      // must use `display` prop only, as reading `compound.width()` causes recursion
      // (other factors like width values will be considered later in this function anyway)
      var isDisplayed = function isDisplayed(ele) {
        return ele.pstyle('display').value !== 'none';
      };
      var displayed = !styleEnabled || isDisplayed(ele)

      // must take into account connected nodes b/c of implicit edge hiding on display:none node
      && (!isEdge || isDisplayed(ele.source()) && isDisplayed(ele.target()));
      if (displayed) {
        // displayed suffices, since we will find zero area eles anyway
        var overlayOpacity = 0;
        var overlayPadding = 0;
        if (styleEnabled && options.includeOverlays) {
          overlayOpacity = ele.pstyle('overlay-opacity').value;
          if (overlayOpacity !== 0) {
            overlayPadding = ele.pstyle('overlay-padding').value;
          }
        }
        var underlayOpacity = 0;
        var underlayPadding = 0;
        if (styleEnabled && options.includeUnderlays) {
          underlayOpacity = ele.pstyle('underlay-opacity').value;
          if (underlayOpacity !== 0) {
            underlayPadding = ele.pstyle('underlay-padding').value;
          }
        }
        var padding = Math.max(overlayPadding, underlayPadding);
        var w = 0;
        var wHalf = 0;
        if (styleEnabled) {
          w = ele.pstyle('width').pfValue;
          wHalf = w / 2;
        }
        if (isNode && options.includeNodes) {
          var pos = ele.position();
          x = pos.x;
          y = pos.y;
          var _w = ele.outerWidth();
          var halfW = _w / 2;
          var h = ele.outerHeight();
          var halfH = h / 2;

          // handle node dimensions
          /////////////////////////

          ex1 = x - halfW;
          ex2 = x + halfW;
          ey1 = y - halfH;
          ey2 = y + halfH;
          updateBounds(bounds, ex1, ey1, ex2, ey2);
          if (styleEnabled && options.includeOutlines) {
            updateBoundsFromOutline(bounds, ele);
          }
        } else if (isEdge && options.includeEdges) {
          if (styleEnabled && !headless) {
            var curveStyle = ele.pstyle('curve-style').strValue;

            // handle edge dimensions (rough box estimate)
            //////////////////////////////////////////////

            ex1 = Math.min(rstyle.srcX, rstyle.midX, rstyle.tgtX);
            ex2 = Math.max(rstyle.srcX, rstyle.midX, rstyle.tgtX);
            ey1 = Math.min(rstyle.srcY, rstyle.midY, rstyle.tgtY);
            ey2 = Math.max(rstyle.srcY, rstyle.midY, rstyle.tgtY);

            // take into account edge width
            ex1 -= wHalf;
            ex2 += wHalf;
            ey1 -= wHalf;
            ey2 += wHalf;
            updateBounds(bounds, ex1, ey1, ex2, ey2);

            // precise edges
            ////////////////

            if (curveStyle === 'haystack') {
              var hpts = rstyle.haystackPts;
              if (hpts && hpts.length === 2) {
                ex1 = hpts[0].x;
                ey1 = hpts[0].y;
                ex2 = hpts[1].x;
                ey2 = hpts[1].y;
                if (ex1 > ex2) {
                  var temp = ex1;
                  ex1 = ex2;
                  ex2 = temp;
                }
                if (ey1 > ey2) {
                  var _temp = ey1;
                  ey1 = ey2;
                  ey2 = _temp;
                }
                updateBounds(bounds, ex1 - wHalf, ey1 - wHalf, ex2 + wHalf, ey2 + wHalf);
              }
            } else if (curveStyle === 'bezier' || curveStyle === 'unbundled-bezier' || curveStyle.endsWith('segments') || curveStyle.endsWith('taxi')) {
              var pts;
              switch (curveStyle) {
                case 'bezier':
                case 'unbundled-bezier':
                  pts = rstyle.bezierPts;
                  break;
                case 'segments':
                case 'taxi':
                case 'round-segments':
                case 'round-taxi':
                  pts = rstyle.linePts;
                  break;
              }
              if (pts != null) {
                for (var j = 0; j < pts.length; j++) {
                  var pt = pts[j];
                  ex1 = pt.x - wHalf;
                  ex2 = pt.x + wHalf;
                  ey1 = pt.y - wHalf;
                  ey2 = pt.y + wHalf;
                  updateBounds(bounds, ex1, ey1, ex2, ey2);
                }
              }
            } // bezier-like or segment-like edge
          } else {
            // headless or style disabled

            // fallback on source and target positions
            //////////////////////////////////////////

            var n1 = ele.source();
            var n1pos = n1.position();
            var n2 = ele.target();
            var n2pos = n2.position();
            ex1 = n1pos.x;
            ex2 = n2pos.x;
            ey1 = n1pos.y;
            ey2 = n2pos.y;
            if (ex1 > ex2) {
              var _temp2 = ex1;
              ex1 = ex2;
              ex2 = _temp2;
            }
            if (ey1 > ey2) {
              var _temp3 = ey1;
              ey1 = ey2;
              ey2 = _temp3;
            }

            // take into account edge width
            ex1 -= wHalf;
            ex2 += wHalf;
            ey1 -= wHalf;
            ey2 += wHalf;
            updateBounds(bounds, ex1, ey1, ex2, ey2);
          } // headless or style disabled
        } // edges

        // handle edge arrow size
        /////////////////////////

        if (styleEnabled && options.includeEdges && isEdge) {
          updateBoundsFromArrow(bounds, ele, 'mid-source');
          updateBoundsFromArrow(bounds, ele, 'mid-target');
          updateBoundsFromArrow(bounds, ele, 'source');
          updateBoundsFromArrow(bounds, ele, 'target');
        }

        // ghost
        ////////

        if (styleEnabled) {
          var ghost = ele.pstyle('ghost').value === 'yes';
          if (ghost) {
            var gx = ele.pstyle('ghost-offset-x').pfValue;
            var gy = ele.pstyle('ghost-offset-y').pfValue;
            updateBounds(bounds, bounds.x1 + gx, bounds.y1 + gy, bounds.x2 + gx, bounds.y2 + gy);
          }
        }

        // always store the body bounds separately from the labels
        var bbBody = _p.bodyBounds = _p.bodyBounds || {};
        assignBoundingBox(bbBody, bounds);
        expandBoundingBoxSides(bbBody, manualExpansion);
        expandBoundingBox(bbBody, 1); // expand to work around browser dimension inaccuracies

        // overlay
        //////////

        if (styleEnabled) {
          ex1 = bounds.x1;
          ex2 = bounds.x2;
          ey1 = bounds.y1;
          ey2 = bounds.y2;
          updateBounds(bounds, ex1 - padding, ey1 - padding, ex2 + padding, ey2 + padding);
        }

        // always store the body bounds separately from the labels
        var bbOverlay = _p.overlayBounds = _p.overlayBounds || {};
        assignBoundingBox(bbOverlay, bounds);
        expandBoundingBoxSides(bbOverlay, manualExpansion);
        expandBoundingBox(bbOverlay, 1); // expand to work around browser dimension inaccuracies

        // handle label dimensions
        //////////////////////////

        var bbLabels = _p.labelBounds = _p.labelBounds || {};
        if (bbLabels.all != null) {
          clearBoundingBox(bbLabels.all);
        } else {
          bbLabels.all = makeBoundingBox();
        }
        if (styleEnabled && options.includeLabels) {
          if (options.includeMainLabels) {
            updateBoundsFromLabel(bounds, ele, null);
          }
          if (isEdge) {
            if (options.includeSourceLabels) {
              updateBoundsFromLabel(bounds, ele, 'source');
            }
            if (options.includeTargetLabels) {
              updateBoundsFromLabel(bounds, ele, 'target');
            }
          }
        } // style enabled for labels
      } // if displayed

      bounds.x1 = noninf(bounds.x1);
      bounds.y1 = noninf(bounds.y1);
      bounds.x2 = noninf(bounds.x2);
      bounds.y2 = noninf(bounds.y2);
      bounds.w = noninf(bounds.x2 - bounds.x1);
      bounds.h = noninf(bounds.y2 - bounds.y1);
      if (bounds.w > 0 && bounds.h > 0 && displayed) {
        expandBoundingBoxSides(bounds, manualExpansion);

        // expand bounds by 1 because antialiasing can increase the visual/effective size by 1 on all sides
        expandBoundingBox(bounds, 1);
      }
      return bounds;
    };
    var getKey = function getKey(opts) {
      var i = 0;
      var tf = function tf(val) {
        return (val ? 1 : 0) << i++;
      };
      var key = 0;
      key += tf(opts.incudeNodes);
      key += tf(opts.includeEdges);
      key += tf(opts.includeLabels);
      key += tf(opts.includeMainLabels);
      key += tf(opts.includeSourceLabels);
      key += tf(opts.includeTargetLabels);
      key += tf(opts.includeOverlays);
      key += tf(opts.includeOutlines);
      return key;
    };
    var getBoundingBoxPosKey = function getBoundingBoxPosKey(ele) {
      if (ele.isEdge()) {
        var p1 = ele.source().position();
        var p2 = ele.target().position();
        var r = function r(x) {
          return Math.round(x);
        };
        return hashIntsArray([r(p1.x), r(p1.y), r(p2.x), r(p2.y)]);
      } else {
        return 0;
      }
    };
    var cachedBoundingBoxImpl = function cachedBoundingBoxImpl(ele, opts) {
      var _p = ele._private;
      var bb;
      var isEdge = ele.isEdge();
      var key = opts == null ? defBbOptsKey : getKey(opts);
      var usingDefOpts = key === defBbOptsKey;
      var currPosKey = getBoundingBoxPosKey(ele);
      var isPosKeySame = _p.bbCachePosKey === currPosKey;
      var useCache = opts.useCache && isPosKeySame;
      var isDirty = function isDirty(ele) {
        return ele._private.bbCache == null || ele._private.styleDirty;
      };
      var needRecalc = !useCache || isDirty(ele) || isEdge && isDirty(ele.source()) || isDirty(ele.target());
      if (needRecalc) {
        if (!isPosKeySame) {
          ele.recalculateRenderedStyle(useCache);
        }
        bb = boundingBoxImpl(ele, defBbOpts);
        _p.bbCache = bb;
        _p.bbCachePosKey = currPosKey;
      } else {
        bb = _p.bbCache;
      }

      // not using def opts => need to build up bb from combination of sub bbs
      if (!usingDefOpts) {
        var isNode = ele.isNode();
        bb = makeBoundingBox();
        if (opts.includeNodes && isNode || opts.includeEdges && !isNode) {
          if (opts.includeOverlays) {
            updateBoundsFromBox(bb, _p.overlayBounds);
          } else {
            updateBoundsFromBox(bb, _p.bodyBounds);
          }
        }
        if (opts.includeLabels) {
          if (opts.includeMainLabels && (!isEdge || opts.includeSourceLabels && opts.includeTargetLabels)) {
            updateBoundsFromBox(bb, _p.labelBounds.all);
          } else {
            if (opts.includeMainLabels) {
              updateBoundsFromBox(bb, _p.labelBounds.mainRot);
            }
            if (opts.includeSourceLabels) {
              updateBoundsFromBox(bb, _p.labelBounds.sourceRot);
            }
            if (opts.includeTargetLabels) {
              updateBoundsFromBox(bb, _p.labelBounds.targetRot);
            }
          }
        }
        bb.w = bb.x2 - bb.x1;
        bb.h = bb.y2 - bb.y1;
      }
      return bb;
    };
    var defBbOpts = {
      includeNodes: true,
      includeEdges: true,
      includeLabels: true,
      includeMainLabels: true,
      includeSourceLabels: true,
      includeTargetLabels: true,
      includeOverlays: true,
      includeUnderlays: true,
      includeOutlines: true,
      useCache: true
    };
    var defBbOptsKey = getKey(defBbOpts);
    var filledBbOpts = defaults$g(defBbOpts);
    elesfn$b.boundingBox = function (options) {
      var bounds;

      // the main usecase is ele.boundingBox() for a single element with no/def options
      // specified s.t. the cache is used, so check for this case to make it faster by
      // avoiding the overhead of the rest of the function
      if (this.length === 1 && this[0]._private.bbCache != null && !this[0]._private.styleDirty && (options === undefined || options.useCache === undefined || options.useCache === true)) {
        if (options === undefined) {
          options = defBbOpts;
        } else {
          options = filledBbOpts(options);
        }
        bounds = cachedBoundingBoxImpl(this[0], options);
      } else {
        bounds = makeBoundingBox();
        options = options || defBbOpts;
        var opts = filledBbOpts(options);
        var eles = this;
        var cy = eles.cy();
        var styleEnabled = cy.styleEnabled();
        if (styleEnabled) {
          for (var i = 0; i < eles.length; i++) {
            var ele = eles[i];
            var _p = ele._private;
            var currPosKey = getBoundingBoxPosKey(ele);
            var isPosKeySame = _p.bbCachePosKey === currPosKey;
            var useCache = opts.useCache && isPosKeySame && !_p.styleDirty;
            ele.recalculateRenderedStyle(useCache);
          }
        }
        this.updateCompoundBounds(!options.useCache);
        for (var _i = 0; _i < eles.length; _i++) {
          var _ele = eles[_i];
          updateBoundsFromBox(bounds, cachedBoundingBoxImpl(_ele, opts));
        }
      }
      bounds.x1 = noninf(bounds.x1);
      bounds.y1 = noninf(bounds.y1);
      bounds.x2 = noninf(bounds.x2);
      bounds.y2 = noninf(bounds.y2);
      bounds.w = noninf(bounds.x2 - bounds.x1);
      bounds.h = noninf(bounds.y2 - bounds.y1);
      return bounds;
    };
    elesfn$b.dirtyBoundingBoxCache = function () {
      for (var i = 0; i < this.length; i++) {
        var _p = this[i]._private;
        _p.bbCache = null;
        _p.bbCachePosKey = null;
        _p.bodyBounds = null;
        _p.overlayBounds = null;
        _p.labelBounds.all = null;
        _p.labelBounds.source = null;
        _p.labelBounds.target = null;
        _p.labelBounds.main = null;
        _p.labelBounds.sourceRot = null;
        _p.labelBounds.targetRot = null;
        _p.labelBounds.mainRot = null;
        _p.arrowBounds.source = null;
        _p.arrowBounds.target = null;
        _p.arrowBounds['mid-source'] = null;
        _p.arrowBounds['mid-target'] = null;
      }
      this.emitAndNotify('bounds');
      return this;
    };

    // private helper to get bounding box for custom node positions
    // - good for perf in certain cases but currently requires dirtying the rendered style
    // - would be better to not modify the nodes but the nodes are read directly everywhere in the renderer...
    // - try to use for only things like discrete layouts where the node position would change anyway
    elesfn$b.boundingBoxAt = function (fn) {
      var nodes = this.nodes();
      var cy = this.cy();
      var hasCompoundNodes = cy.hasCompoundNodes();
      var parents = cy.collection();
      if (hasCompoundNodes) {
        parents = nodes.filter(function (node) {
          return node.isParent();
        });
        nodes = nodes.not(parents);
      }
      if (plainObject(fn)) {
        var obj = fn;
        fn = function fn() {
          return obj;
        };
      }
      var storeOldPos = function storeOldPos(node, i) {
        return node._private.bbAtOldPos = fn(node, i);
      };
      var getOldPos = function getOldPos(node) {
        return node._private.bbAtOldPos;
      };
      cy.startBatch();
      nodes.forEach(storeOldPos).silentPositions(fn);
      if (hasCompoundNodes) {
        parents.dirtyCompoundBoundsCache();
        parents.dirtyBoundingBoxCache();
        parents.updateCompoundBounds(true); // force update b/c we're inside a batch cycle
      }

      var bb = copyBoundingBox(this.boundingBox({
        useCache: false
      }));
      nodes.silentPositions(getOldPos);
      if (hasCompoundNodes) {
        parents.dirtyCompoundBoundsCache();
        parents.dirtyBoundingBoxCache();
        parents.updateCompoundBounds(true); // force update b/c we're inside a batch cycle
      }

      cy.endBatch();
      return bb;
    };
    fn$3.boundingbox = fn$3.bb = fn$3.boundingBox;
    fn$3.renderedBoundingbox = fn$3.renderedBoundingBox;
    var bounds = elesfn$b;

    var fn$2, elesfn$a;
    fn$2 = elesfn$a = {};
    var defineDimFns = function defineDimFns(opts) {
      opts.uppercaseName = capitalize(opts.name);
      opts.autoName = 'auto' + opts.uppercaseName;
      opts.labelName = 'label' + opts.uppercaseName;
      opts.outerName = 'outer' + opts.uppercaseName;
      opts.uppercaseOuterName = capitalize(opts.outerName);
      fn$2[opts.name] = function dimImpl() {
        var ele = this[0];
        var _p = ele._private;
        var cy = _p.cy;
        var styleEnabled = cy._private.styleEnabled;
        if (ele) {
          if (styleEnabled) {
            if (ele.isParent()) {
              ele.updateCompoundBounds();
              return _p[opts.autoName] || 0;
            }
            var d = ele.pstyle(opts.name);
            switch (d.strValue) {
              case 'label':
                ele.recalculateRenderedStyle();
                return _p.rstyle[opts.labelName] || 0;
              default:
                return d.pfValue;
            }
          } else {
            return 1;
          }
        }
      };
      fn$2['outer' + opts.uppercaseName] = function outerDimImpl() {
        var ele = this[0];
        var _p = ele._private;
        var cy = _p.cy;
        var styleEnabled = cy._private.styleEnabled;
        if (ele) {
          if (styleEnabled) {
            var dim = ele[opts.name]();
            var border = ele.pstyle('border-width').pfValue; // n.b. 1/2 each side
            var padding = 2 * ele.padding();
            return dim + border + padding;
          } else {
            return 1;
          }
        }
      };
      fn$2['rendered' + opts.uppercaseName] = function renderedDimImpl() {
        var ele = this[0];
        if (ele) {
          var d = ele[opts.name]();
          return d * this.cy().zoom();
        }
      };
      fn$2['rendered' + opts.uppercaseOuterName] = function renderedOuterDimImpl() {
        var ele = this[0];
        if (ele) {
          var od = ele[opts.outerName]();
          return od * this.cy().zoom();
        }
      };
    };
    defineDimFns({
      name: 'width'
    });
    defineDimFns({
      name: 'height'
    });
    elesfn$a.padding = function () {
      var ele = this[0];
      var _p = ele._private;
      if (ele.isParent()) {
        ele.updateCompoundBounds();
        if (_p.autoPadding !== undefined) {
          return _p.autoPadding;
        } else {
          return ele.pstyle('padding').pfValue;
        }
      } else {
        return ele.pstyle('padding').pfValue;
      }
    };
    elesfn$a.paddedHeight = function () {
      var ele = this[0];
      return ele.height() + 2 * ele.padding();
    };
    elesfn$a.paddedWidth = function () {
      var ele = this[0];
      return ele.width() + 2 * ele.padding();
    };
    var widthHeight = elesfn$a;

    var ifEdge = function ifEdge(ele, getValue) {
      if (ele.isEdge()) {
        return getValue(ele);
      }
    };
    var ifEdgeRenderedPosition = function ifEdgeRenderedPosition(ele, getPoint) {
      if (ele.isEdge()) {
        var cy = ele.cy();
        return modelToRenderedPosition(getPoint(ele), cy.zoom(), cy.pan());
      }
    };
    var ifEdgeRenderedPositions = function ifEdgeRenderedPositions(ele, getPoints) {
      if (ele.isEdge()) {
        var cy = ele.cy();
        var pan = cy.pan();
        var zoom = cy.zoom();
        return getPoints(ele).map(function (p) {
          return modelToRenderedPosition(p, zoom, pan);
        });
      }
    };
    var controlPoints = function controlPoints(ele) {
      return ele.renderer().getControlPoints(ele);
    };
    var segmentPoints = function segmentPoints(ele) {
      return ele.renderer().getSegmentPoints(ele);
    };
    var sourceEndpoint = function sourceEndpoint(ele) {
      return ele.renderer().getSourceEndpoint(ele);
    };
    var targetEndpoint = function targetEndpoint(ele) {
      return ele.renderer().getTargetEndpoint(ele);
    };
    var midpoint = function midpoint(ele) {
      return ele.renderer().getEdgeMidpoint(ele);
    };
    var pts = {
      controlPoints: {
        get: controlPoints,
        mult: true
      },
      segmentPoints: {
        get: segmentPoints,
        mult: true
      },
      sourceEndpoint: {
        get: sourceEndpoint
      },
      targetEndpoint: {
        get: targetEndpoint
      },
      midpoint: {
        get: midpoint
      }
    };
    var renderedName = function renderedName(name) {
      return 'rendered' + name[0].toUpperCase() + name.substr(1);
    };
    var edgePoints = Object.keys(pts).reduce(function (obj, name) {
      var spec = pts[name];
      var rName = renderedName(name);
      obj[name] = function () {
        return ifEdge(this, spec.get);
      };
      if (spec.mult) {
        obj[rName] = function () {
          return ifEdgeRenderedPositions(this, spec.get);
        };
      } else {
        obj[rName] = function () {
          return ifEdgeRenderedPosition(this, spec.get);
        };
      }
      return obj;
    }, {});

    var dimensions = extend$1({}, position, bounds, widthHeight, edgePoints);

    /*!
    Event object based on jQuery events, MIT license

    https://jquery.org/license/
    https://tldrlegal.com/license/mit-license
    https://github.com/jquery/jquery/blob/master/src/event.js
    */

    var Event = function Event(src, props) {
      this.recycle(src, props);
    };
    function returnFalse() {
      return false;
    }
    function returnTrue() {
      return true;
    }

    // http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
    Event.prototype = {
      instanceString: function instanceString() {
        return 'event';
      },
      recycle: function recycle(src, props) {
        this.isImmediatePropagationStopped = this.isPropagationStopped = this.isDefaultPrevented = returnFalse;
        if (src != null && src.preventDefault) {
          // Browser Event object
          this.type = src.type;

          // Events bubbling up the document may have been marked as prevented
          // by a handler lower down the tree; reflect the correct value.
          this.isDefaultPrevented = src.defaultPrevented ? returnTrue : returnFalse;
        } else if (src != null && src.type) {
          // Plain object containing all event details
          props = src;
        } else {
          // Event string
          this.type = src;
        }

        // Put explicitly provided properties onto the event object
        if (props != null) {
          // more efficient to manually copy fields we use
          this.originalEvent = props.originalEvent;
          this.type = props.type != null ? props.type : this.type;
          this.cy = props.cy;
          this.target = props.target;
          this.position = props.position;
          this.renderedPosition = props.renderedPosition;
          this.namespace = props.namespace;
          this.layout = props.layout;
        }
        if (this.cy != null && this.position != null && this.renderedPosition == null) {
          // create a rendered position based on the passed position
          var pos = this.position;
          var zoom = this.cy.zoom();
          var pan = this.cy.pan();
          this.renderedPosition = {
            x: pos.x * zoom + pan.x,
            y: pos.y * zoom + pan.y
          };
        }

        // Create a timestamp if incoming event doesn't have one
        this.timeStamp = src && src.timeStamp || Date.now();
      },
      preventDefault: function preventDefault() {
        this.isDefaultPrevented = returnTrue;
        var e = this.originalEvent;
        if (!e) {
          return;
        }

        // if preventDefault exists run it on the original event
        if (e.preventDefault) {
          e.preventDefault();
        }
      },
      stopPropagation: function stopPropagation() {
        this.isPropagationStopped = returnTrue;
        var e = this.originalEvent;
        if (!e) {
          return;
        }

        // if stopPropagation exists run it on the original event
        if (e.stopPropagation) {
          e.stopPropagation();
        }
      },
      stopImmediatePropagation: function stopImmediatePropagation() {
        this.isImmediatePropagationStopped = returnTrue;
        this.stopPropagation();
      },
      isDefaultPrevented: returnFalse,
      isPropagationStopped: returnFalse,
      isImmediatePropagationStopped: returnFalse
    };

    var eventRegex = /^([^.]+)(\.(?:[^.]+))?$/; // regex for matching event strings (e.g. "click.namespace")
    var universalNamespace = '.*'; // matches as if no namespace specified and prevents users from unbinding accidentally

    var defaults$8 = {
      qualifierCompare: function qualifierCompare(q1, q2) {
        return q1 === q2;
      },
      eventMatches: function eventMatches( /*context, listener, eventObj*/
      ) {
        return true;
      },
      addEventFields: function addEventFields( /*context, evt*/
      ) {},
      callbackContext: function callbackContext(context /*, listener, eventObj*/) {
        return context;
      },
      beforeEmit: function beforeEmit( /* context, listener, eventObj */
      ) {},
      afterEmit: function afterEmit( /* context, listener, eventObj */
      ) {},
      bubble: function bubble( /*context*/
      ) {
        return false;
      },
      parent: function parent( /*context*/
      ) {
        return null;
      },
      context: null
    };
    var defaultsKeys = Object.keys(defaults$8);
    var emptyOpts = {};
    function Emitter() {
      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : emptyOpts;
      var context = arguments.length > 1 ? arguments[1] : undefined;
      // micro-optimisation vs Object.assign() -- reduces Element instantiation time
      for (var i = 0; i < defaultsKeys.length; i++) {
        var key = defaultsKeys[i];
        this[key] = opts[key] || defaults$8[key];
      }
      this.context = context || this.context;
      this.listeners = [];
      this.emitting = 0;
    }
    var p = Emitter.prototype;
    var forEachEvent = function forEachEvent(self, handler, events, qualifier, callback, conf, confOverrides) {
      if (fn$6(qualifier)) {
        callback = qualifier;
        qualifier = null;
      }
      if (confOverrides) {
        if (conf == null) {
          conf = confOverrides;
        } else {
          conf = extend$1({}, conf, confOverrides);
        }
      }
      var eventList = array(events) ? events : events.split(/\s+/);
      for (var i = 0; i < eventList.length; i++) {
        var evt = eventList[i];
        if (emptyString(evt)) {
          continue;
        }
        var match = evt.match(eventRegex); // type[.namespace]

        if (match) {
          var type = match[1];
          var namespace = match[2] ? match[2] : null;
          var ret = handler(self, evt, type, namespace, qualifier, callback, conf);
          if (ret === false) {
            break;
          } // allow exiting early
        }
      }
    };

    var makeEventObj = function makeEventObj(self, obj) {
      self.addEventFields(self.context, obj);
      return new Event(obj.type, obj);
    };
    var forEachEventObj = function forEachEventObj(self, handler, events) {
      if (event(events)) {
        handler(self, events);
        return;
      } else if (plainObject(events)) {
        handler(self, makeEventObj(self, events));
        return;
      }
      var eventList = array(events) ? events : events.split(/\s+/);
      for (var i = 0; i < eventList.length; i++) {
        var evt = eventList[i];
        if (emptyString(evt)) {
          continue;
        }
        var match = evt.match(eventRegex); // type[.namespace]

        if (match) {
          var type = match[1];
          var namespace = match[2] ? match[2] : null;
          var eventObj = makeEventObj(self, {
            type: type,
            namespace: namespace,
            target: self.context
          });
          handler(self, eventObj);
        }
      }
    };
    p.on = p.addListener = function (events, qualifier, callback, conf, confOverrides) {
      forEachEvent(this, function (self, event, type, namespace, qualifier, callback, conf) {
        if (fn$6(callback)) {
          self.listeners.push({
            event: event,
            // full event string
            callback: callback,
            // callback to run
            type: type,
            // the event type (e.g. 'click')
            namespace: namespace,
            // the event namespace (e.g. ".foo")
            qualifier: qualifier,
            // a restriction on whether to match this emitter
            conf: conf // additional configuration
          });
        }
      }, events, qualifier, callback, conf, confOverrides);
      return this;
    };
    p.one = function (events, qualifier, callback, conf) {
      return this.on(events, qualifier, callback, conf, {
        one: true
      });
    };
    p.removeListener = p.off = function (events, qualifier, callback, conf) {
      var _this = this;
      if (this.emitting !== 0) {
        this.listeners = copyArray$1(this.listeners);
      }
      var listeners = this.listeners;
      var _loop = function _loop(i) {
        var listener = listeners[i];
        forEachEvent(_this, function (self, event, type, namespace, qualifier, callback /*, conf*/) {
          if ((listener.type === type || events === '*') && (!namespace && listener.namespace !== '.*' || listener.namespace === namespace) && (!qualifier || self.qualifierCompare(listener.qualifier, qualifier)) && (!callback || listener.callback === callback)) {
            listeners.splice(i, 1);
            return false;
          }
        }, events, qualifier, callback, conf);
      };
      for (var i = listeners.length - 1; i >= 0; i--) {
        _loop(i);
      }
      return this;
    };
    p.removeAllListeners = function () {
      return this.removeListener('*');
    };
    p.emit = p.trigger = function (events, extraParams, manualCallback) {
      var listeners = this.listeners;
      var numListenersBeforeEmit = listeners.length;
      this.emitting++;
      if (!array(extraParams)) {
        extraParams = [extraParams];
      }
      forEachEventObj(this, function (self, eventObj) {
        if (manualCallback != null) {
          listeners = [{
            event: eventObj.event,
            type: eventObj.type,
            namespace: eventObj.namespace,
            callback: manualCallback
          }];
          numListenersBeforeEmit = listeners.length;
        }
        var _loop2 = function _loop2(i) {
          var listener = listeners[i];
          if (listener.type === eventObj.type && (!listener.namespace || listener.namespace === eventObj.namespace || listener.namespace === universalNamespace) && self.eventMatches(self.context, listener, eventObj)) {
            var args = [eventObj];
            if (extraParams != null) {
              push(args, extraParams);
            }
            self.beforeEmit(self.context, listener, eventObj);
            if (listener.conf && listener.conf.one) {
              self.listeners = self.listeners.filter(function (l) {
                return l !== listener;
              });
            }
            var context = self.callbackContext(self.context, listener, eventObj);
            var ret = listener.callback.apply(context, args);
            self.afterEmit(self.context, listener, eventObj);
            if (ret === false) {
              eventObj.stopPropagation();
              eventObj.preventDefault();
            }
          } // if listener matches
        };
        for (var i = 0; i < numListenersBeforeEmit; i++) {
          _loop2(i);
        } // for listener

        if (self.bubble(self.context) && !eventObj.isPropagationStopped()) {
          self.parent(self.context).emit(eventObj, extraParams);
        }
      }, events);
      this.emitting--;
      return this;
    };

    var emitterOptions$1 = {
      qualifierCompare: function qualifierCompare(selector1, selector2) {
        if (selector1 == null || selector2 == null) {
          return selector1 == null && selector2 == null;
        } else {
          return selector1.sameText(selector2);
        }
      },
      eventMatches: function eventMatches(ele, listener, eventObj) {
        var selector = listener.qualifier;
        if (selector != null) {
          return ele !== eventObj.target && element(eventObj.target) && selector.matches(eventObj.target);
        }
        return true;
      },
      addEventFields: function addEventFields(ele, evt) {
        evt.cy = ele.cy();
        evt.target = ele;
      },
      callbackContext: function callbackContext(ele, listener, eventObj) {
        return listener.qualifier != null ? eventObj.target : ele;
      },
      beforeEmit: function beforeEmit(context, listener /*, eventObj*/) {
        if (listener.conf && listener.conf.once) {
          listener.conf.onceCollection.removeListener(listener.event, listener.qualifier, listener.callback);
        }
      },
      bubble: function bubble() {
        return true;
      },
      parent: function parent(ele) {
        return ele.isChild() ? ele.parent() : ele.cy();
      }
    };
    var argSelector$1 = function argSelector(arg) {
      if (string(arg)) {
        return new Selector(arg);
      } else {
        return arg;
      }
    };
    var elesfn$9 = {
      createEmitter: function createEmitter() {
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          var _p = ele._private;
          if (!_p.emitter) {
            _p.emitter = new Emitter(emitterOptions$1, ele);
          }
        }
        return this;
      },
      emitter: function emitter() {
        return this._private.emitter;
      },
      on: function on(events, selector, callback) {
        var argSel = argSelector$1(selector);
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          ele.emitter().on(events, argSel, callback);
        }
        return this;
      },
      removeListener: function removeListener(events, selector, callback) {
        var argSel = argSelector$1(selector);
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          ele.emitter().removeListener(events, argSel, callback);
        }
        return this;
      },
      removeAllListeners: function removeAllListeners() {
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          ele.emitter().removeAllListeners();
        }
        return this;
      },
      one: function one(events, selector, callback) {
        var argSel = argSelector$1(selector);
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          ele.emitter().one(events, argSel, callback);
        }
        return this;
      },
      once: function once(events, selector, callback) {
        var argSel = argSelector$1(selector);
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          ele.emitter().on(events, argSel, callback, {
            once: true,
            onceCollection: this
          });
        }
      },
      emit: function emit(events, extraParams) {
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          ele.emitter().emit(events, extraParams);
        }
        return this;
      },
      emitAndNotify: function emitAndNotify(event, extraParams) {
        // for internal use only
        if (this.length === 0) {
          return;
        } // empty collections don't need to notify anything

        // notify renderer
        this.cy().notify(event, this);
        this.emit(event, extraParams);
        return this;
      }
    };
    define.eventAliasesOn(elesfn$9);

    var elesfn$8 = {
      nodes: function nodes(selector) {
        return this.filter(function (ele) {
          return ele.isNode();
        }).filter(selector);
      },
      edges: function edges(selector) {
        return this.filter(function (ele) {
          return ele.isEdge();
        }).filter(selector);
      },
      // internal helper to get nodes and edges as separate collections with single iteration over elements
      byGroup: function byGroup() {
        var nodes = this.spawn();
        var edges = this.spawn();
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          if (ele.isNode()) {
            nodes.push(ele);
          } else {
            edges.push(ele);
          }
        }
        return {
          nodes: nodes,
          edges: edges
        };
      },
      filter: function filter(_filter, thisArg) {
        if (_filter === undefined) {
          // check this first b/c it's the most common/performant case
          return this;
        } else if (string(_filter) || elementOrCollection(_filter)) {
          return new Selector(_filter).filter(this);
        } else if (fn$6(_filter)) {
          var filterEles = this.spawn();
          var eles = this;
          for (var i = 0; i < eles.length; i++) {
            var ele = eles[i];
            var include = thisArg ? _filter.apply(thisArg, [ele, i, eles]) : _filter(ele, i, eles);
            if (include) {
              filterEles.push(ele);
            }
          }
          return filterEles;
        }
        return this.spawn(); // if not handled by above, give 'em an empty collection
      },

      not: function not(toRemove) {
        if (!toRemove) {
          return this;
        } else {
          if (string(toRemove)) {
            toRemove = this.filter(toRemove);
          }
          var elements = this.spawn();
          for (var i = 0; i < this.length; i++) {
            var element = this[i];
            var remove = toRemove.has(element);
            if (!remove) {
              elements.push(element);
            }
          }
          return elements;
        }
      },
      absoluteComplement: function absoluteComplement() {
        var cy = this.cy();
        return cy.mutableElements().not(this);
      },
      intersect: function intersect(other) {
        // if a selector is specified, then filter by it instead
        if (string(other)) {
          var selector = other;
          return this.filter(selector);
        }
        var elements = this.spawn();
        var col1 = this;
        var col2 = other;
        var col1Smaller = this.length < other.length;
        var colS = col1Smaller ? col1 : col2;
        var colL = col1Smaller ? col2 : col1;
        for (var i = 0; i < colS.length; i++) {
          var ele = colS[i];
          if (colL.has(ele)) {
            elements.push(ele);
          }
        }
        return elements;
      },
      xor: function xor(other) {
        var cy = this._private.cy;
        if (string(other)) {
          other = cy.$(other);
        }
        var elements = this.spawn();
        var col1 = this;
        var col2 = other;
        var add = function add(col, other) {
          for (var i = 0; i < col.length; i++) {
            var ele = col[i];
            var id = ele._private.data.id;
            var inOther = other.hasElementWithId(id);
            if (!inOther) {
              elements.push(ele);
            }
          }
        };
        add(col1, col2);
        add(col2, col1);
        return elements;
      },
      diff: function diff(other) {
        var cy = this._private.cy;
        if (string(other)) {
          other = cy.$(other);
        }
        var left = this.spawn();
        var right = this.spawn();
        var both = this.spawn();
        var col1 = this;
        var col2 = other;
        var add = function add(col, other, retEles) {
          for (var i = 0; i < col.length; i++) {
            var ele = col[i];
            var id = ele._private.data.id;
            var inOther = other.hasElementWithId(id);
            if (inOther) {
              both.merge(ele);
            } else {
              retEles.push(ele);
            }
          }
        };
        add(col1, col2, left);
        add(col2, col1, right);
        return {
          left: left,
          right: right,
          both: both
        };
      },
      add: function add(toAdd) {
        var cy = this._private.cy;
        if (!toAdd) {
          return this;
        }
        if (string(toAdd)) {
          var selector = toAdd;
          toAdd = cy.mutableElements().filter(selector);
        }
        var elements = this.spawnSelf();
        for (var i = 0; i < toAdd.length; i++) {
          var ele = toAdd[i];
          var add = !this.has(ele);
          if (add) {
            elements.push(ele);
          }
        }
        return elements;
      },
      // in place merge on calling collection
      merge: function merge(toAdd) {
        var _p = this._private;
        var cy = _p.cy;
        if (!toAdd) {
          return this;
        }
        if (toAdd && string(toAdd)) {
          var selector = toAdd;
          toAdd = cy.mutableElements().filter(selector);
        }
        var map = _p.map;
        for (var i = 0; i < toAdd.length; i++) {
          var toAddEle = toAdd[i];
          var id = toAddEle._private.data.id;
          var add = !map.has(id);
          if (add) {
            var index = this.length++;
            this[index] = toAddEle;
            map.set(id, {
              ele: toAddEle,
              index: index
            });
          }
        }
        return this; // chaining
      },

      unmergeAt: function unmergeAt(i) {
        var ele = this[i];
        var id = ele.id();
        var _p = this._private;
        var map = _p.map;

        // remove ele
        this[i] = undefined;
        map["delete"](id);
        var unmergedLastEle = i === this.length - 1;

        // replace empty spot with last ele in collection
        if (this.length > 1 && !unmergedLastEle) {
          var lastEleI = this.length - 1;
          var lastEle = this[lastEleI];
          var lastEleId = lastEle._private.data.id;
          this[lastEleI] = undefined;
          this[i] = lastEle;
          map.set(lastEleId, {
            ele: lastEle,
            index: i
          });
        }

        // the collection is now 1 ele smaller
        this.length--;
        return this;
      },
      // remove single ele in place in calling collection
      unmergeOne: function unmergeOne(ele) {
        ele = ele[0];
        var _p = this._private;
        var id = ele._private.data.id;
        var map = _p.map;
        var entry = map.get(id);
        if (!entry) {
          return this; // no need to remove
        }

        var i = entry.index;
        this.unmergeAt(i);
        return this;
      },
      // remove eles in place on calling collection
      unmerge: function unmerge(toRemove) {
        var cy = this._private.cy;
        if (!toRemove) {
          return this;
        }
        if (toRemove && string(toRemove)) {
          var selector = toRemove;
          toRemove = cy.mutableElements().filter(selector);
        }
        for (var i = 0; i < toRemove.length; i++) {
          this.unmergeOne(toRemove[i]);
        }
        return this; // chaining
      },

      unmergeBy: function unmergeBy(toRmFn) {
        for (var i = this.length - 1; i >= 0; i--) {
          var ele = this[i];
          if (toRmFn(ele)) {
            this.unmergeAt(i);
          }
        }
        return this;
      },
      map: function map(mapFn, thisArg) {
        var arr = [];
        var eles = this;
        for (var i = 0; i < eles.length; i++) {
          var ele = eles[i];
          var ret = thisArg ? mapFn.apply(thisArg, [ele, i, eles]) : mapFn(ele, i, eles);
          arr.push(ret);
        }
        return arr;
      },
      reduce: function reduce(fn, initialValue) {
        var val = initialValue;
        var eles = this;
        for (var i = 0; i < eles.length; i++) {
          val = fn(val, eles[i], i, eles);
        }
        return val;
      },
      max: function max(valFn, thisArg) {
        var max = -Infinity;
        var maxEle;
        var eles = this;
        for (var i = 0; i < eles.length; i++) {
          var ele = eles[i];
          var val = thisArg ? valFn.apply(thisArg, [ele, i, eles]) : valFn(ele, i, eles);
          if (val > max) {
            max = val;
            maxEle = ele;
          }
        }
        return {
          value: max,
          ele: maxEle
        };
      },
      min: function min(valFn, thisArg) {
        var min = Infinity;
        var minEle;
        var eles = this;
        for (var i = 0; i < eles.length; i++) {
          var ele = eles[i];
          var val = thisArg ? valFn.apply(thisArg, [ele, i, eles]) : valFn(ele, i, eles);
          if (val < min) {
            min = val;
            minEle = ele;
          }
        }
        return {
          value: min,
          ele: minEle
        };
      }
    };

    // aliases
    var fn$1 = elesfn$8;
    fn$1['u'] = fn$1['|'] = fn$1['+'] = fn$1.union = fn$1.or = fn$1.add;
    fn$1['\\'] = fn$1['!'] = fn$1['-'] = fn$1.difference = fn$1.relativeComplement = fn$1.subtract = fn$1.not;
    fn$1['n'] = fn$1['&'] = fn$1['.'] = fn$1.and = fn$1.intersection = fn$1.intersect;
    fn$1['^'] = fn$1['(+)'] = fn$1['(-)'] = fn$1.symmetricDifference = fn$1.symdiff = fn$1.xor;
    fn$1.fnFilter = fn$1.filterFn = fn$1.stdFilter = fn$1.filter;
    fn$1.complement = fn$1.abscomp = fn$1.absoluteComplement;

    var elesfn$7 = {
      isNode: function isNode() {
        return this.group() === 'nodes';
      },
      isEdge: function isEdge() {
        return this.group() === 'edges';
      },
      isLoop: function isLoop() {
        return this.isEdge() && this.source()[0] === this.target()[0];
      },
      isSimple: function isSimple() {
        return this.isEdge() && this.source()[0] !== this.target()[0];
      },
      group: function group() {
        var ele = this[0];
        if (ele) {
          return ele._private.group;
        }
      }
    };

    /**
     *  Elements are drawn in a specific order based on compound depth (low to high), the element type (nodes above edges),
     *  and z-index (low to high).  These styles affect how this applies:
     *
     *  z-compound-depth: May be `bottom | orphan | auto | top`.  The first drawn is `bottom`, then `orphan` which is the
     *      same depth as the root of the compound graph, followed by the default value `auto` which draws in order from
     *      root to leaves of the compound graph.  The last drawn is `top`.
     *  z-index-compare: May be `auto | manual`.  The default value is `auto` which always draws edges under nodes.
     *      `manual` ignores this convention and draws based on the `z-index` value setting.
     *  z-index: An integer value that affects the relative draw order of elements.  In general, an element with a higher
     *      `z-index` will be drawn on top of an element with a lower `z-index`.
     */
    var zIndexSort = function zIndexSort(a, b) {
      var cy = a.cy();
      var hasCompoundNodes = cy.hasCompoundNodes();
      function getDepth(ele) {
        var style = ele.pstyle('z-compound-depth');
        if (style.value === 'auto') {
          return hasCompoundNodes ? ele.zDepth() : 0;
        } else if (style.value === 'bottom') {
          return -1;
        } else if (style.value === 'top') {
          return MAX_INT$1;
        }
        // 'orphan'
        return 0;
      }
      var depthDiff = getDepth(a) - getDepth(b);
      if (depthDiff !== 0) {
        return depthDiff;
      }
      function getEleDepth(ele) {
        var style = ele.pstyle('z-index-compare');
        if (style.value === 'auto') {
          return ele.isNode() ? 1 : 0;
        }
        // 'manual'
        return 0;
      }
      var eleDiff = getEleDepth(a) - getEleDepth(b);
      if (eleDiff !== 0) {
        return eleDiff;
      }
      var zDiff = a.pstyle('z-index').value - b.pstyle('z-index').value;
      if (zDiff !== 0) {
        return zDiff;
      }
      // compare indices in the core (order added to graph w/ last on top)
      return a.poolIndex() - b.poolIndex();
    };

    var elesfn$6 = {
      forEach: function forEach(fn, thisArg) {
        if (fn$6(fn)) {
          var N = this.length;
          for (var i = 0; i < N; i++) {
            var ele = this[i];
            var ret = thisArg ? fn.apply(thisArg, [ele, i, this]) : fn(ele, i, this);
            if (ret === false) {
              break;
            } // exit each early on return false
          }
        }

        return this;
      },
      toArray: function toArray() {
        var array = [];
        for (var i = 0; i < this.length; i++) {
          array.push(this[i]);
        }
        return array;
      },
      slice: function slice(start, end) {
        var array = [];
        var thisSize = this.length;
        if (end == null) {
          end = thisSize;
        }
        if (start == null) {
          start = 0;
        }
        if (start < 0) {
          start = thisSize + start;
        }
        if (end < 0) {
          end = thisSize + end;
        }
        for (var i = start; i >= 0 && i < end && i < thisSize; i++) {
          array.push(this[i]);
        }
        return this.spawn(array);
      },
      size: function size() {
        return this.length;
      },
      eq: function eq(i) {
        return this[i] || this.spawn();
      },
      first: function first() {
        return this[0] || this.spawn();
      },
      last: function last() {
        return this[this.length - 1] || this.spawn();
      },
      empty: function empty() {
        return this.length === 0;
      },
      nonempty: function nonempty() {
        return !this.empty();
      },
      sort: function sort(sortFn) {
        if (!fn$6(sortFn)) {
          return this;
        }
        var sorted = this.toArray().sort(sortFn);
        return this.spawn(sorted);
      },
      sortByZIndex: function sortByZIndex() {
        return this.sort(zIndexSort);
      },
      zDepth: function zDepth() {
        var ele = this[0];
        if (!ele) {
          return undefined;
        }

        // let cy = ele.cy();
        var _p = ele._private;
        var group = _p.group;
        if (group === 'nodes') {
          var depth = _p.data.parent ? ele.parents().size() : 0;
          if (!ele.isParent()) {
            return MAX_INT$1 - 1; // childless nodes always on top
          }

          return depth;
        } else {
          var src = _p.source;
          var tgt = _p.target;
          var srcDepth = src.zDepth();
          var tgtDepth = tgt.zDepth();
          return Math.max(srcDepth, tgtDepth, 0); // depth of deepest parent
        }
      }
    };

    elesfn$6.each = elesfn$6.forEach;
    var defineSymbolIterator = function defineSymbolIterator() {
      var typeofUndef = "undefined" ;
      var isIteratorSupported = (typeof Symbol === "undefined" ? "undefined" : _typeof(Symbol)) != typeofUndef && _typeof(Symbol.iterator) != typeofUndef; // eslint-disable-line no-undef

      if (isIteratorSupported) {
        elesfn$6[Symbol.iterator] = function () {
          var _this = this;
          // eslint-disable-line no-undef
          var entry = {
            value: undefined,
            done: false
          };
          var i = 0;
          var length = this.length;
          return _defineProperty$1({
            next: function next() {
              if (i < length) {
                entry.value = _this[i++];
              } else {
                entry.value = undefined;
                entry.done = true;
              }
              return entry;
            }
          }, Symbol.iterator, function () {
            // eslint-disable-line no-undef
            return this;
          });
        };
      }
    };
    defineSymbolIterator();

    var getLayoutDimensionOptions = defaults$g({
      nodeDimensionsIncludeLabels: false
    });
    var elesfn$5 = {
      // Calculates and returns node dimensions { x, y } based on options given
      layoutDimensions: function layoutDimensions(options) {
        options = getLayoutDimensionOptions(options);
        var dims;
        if (!this.takesUpSpace()) {
          dims = {
            w: 0,
            h: 0
          };
        } else if (options.nodeDimensionsIncludeLabels) {
          var bbDim = this.boundingBox();
          dims = {
            w: bbDim.w,
            h: bbDim.h
          };
        } else {
          dims = {
            w: this.outerWidth(),
            h: this.outerHeight()
          };
        }

        // sanitise the dimensions for external layouts (avoid division by zero)
        if (dims.w === 0 || dims.h === 0) {
          dims.w = dims.h = 1;
        }
        return dims;
      },
      // using standard layout options, apply position function (w/ or w/o animation)
      layoutPositions: function layoutPositions(layout, options, fn) {
        var nodes = this.nodes().filter(function (n) {
          return !n.isParent();
        });
        var cy = this.cy();
        var layoutEles = options.eles; // nodes & edges
        var getMemoizeKey = function getMemoizeKey(node) {
          return node.id();
        };
        var fnMem = memoize$1(fn, getMemoizeKey); // memoized version of position function

        layout.emit({
          type: 'layoutstart',
          layout: layout
        });
        layout.animations = [];
        var calculateSpacing = function calculateSpacing(spacing, nodesBb, pos) {
          var center = {
            x: nodesBb.x1 + nodesBb.w / 2,
            y: nodesBb.y1 + nodesBb.h / 2
          };
          var spacingVector = {
            // scale from center of bounding box (not necessarily 0,0)
            x: (pos.x - center.x) * spacing,
            y: (pos.y - center.y) * spacing
          };
          return {
            x: center.x + spacingVector.x,
            y: center.y + spacingVector.y
          };
        };
        var useSpacingFactor = options.spacingFactor && options.spacingFactor !== 1;
        var spacingBb = function spacingBb() {
          if (!useSpacingFactor) {
            return null;
          }
          var bb = makeBoundingBox();
          for (var i = 0; i < nodes.length; i++) {
            var node = nodes[i];
            var pos = fnMem(node, i);
            expandBoundingBoxByPoint(bb, pos.x, pos.y);
          }
          return bb;
        };
        var bb = spacingBb();
        var getFinalPos = memoize$1(function (node, i) {
          var newPos = fnMem(node, i);
          if (useSpacingFactor) {
            var spacing = Math.abs(options.spacingFactor);
            newPos = calculateSpacing(spacing, bb, newPos);
          }
          if (options.transform != null) {
            newPos = options.transform(node, newPos);
          }
          return newPos;
        }, getMemoizeKey);
        if (options.animate) {
          for (var i = 0; i < nodes.length; i++) {
            var node = nodes[i];
            var newPos = getFinalPos(node, i);
            var animateNode = options.animateFilter == null || options.animateFilter(node, i);
            if (animateNode) {
              var ani = node.animation({
                position: newPos,
                duration: options.animationDuration,
                easing: options.animationEasing
              });
              layout.animations.push(ani);
            } else {
              node.position(newPos);
            }
          }
          if (options.fit) {
            var fitAni = cy.animation({
              fit: {
                boundingBox: layoutEles.boundingBoxAt(getFinalPos),
                padding: options.padding
              },
              duration: options.animationDuration,
              easing: options.animationEasing
            });
            layout.animations.push(fitAni);
          } else if (options.zoom !== undefined && options.pan !== undefined) {
            var zoomPanAni = cy.animation({
              zoom: options.zoom,
              pan: options.pan,
              duration: options.animationDuration,
              easing: options.animationEasing
            });
            layout.animations.push(zoomPanAni);
          }
          layout.animations.forEach(function (ani) {
            return ani.play();
          });
          layout.one('layoutready', options.ready);
          layout.emit({
            type: 'layoutready',
            layout: layout
          });
          Promise$1.all(layout.animations.map(function (ani) {
            return ani.promise();
          })).then(function () {
            layout.one('layoutstop', options.stop);
            layout.emit({
              type: 'layoutstop',
              layout: layout
            });
          });
        } else {
          nodes.positions(getFinalPos);
          if (options.fit) {
            cy.fit(options.eles, options.padding);
          }
          if (options.zoom != null) {
            cy.zoom(options.zoom);
          }
          if (options.pan) {
            cy.pan(options.pan);
          }
          layout.one('layoutready', options.ready);
          layout.emit({
            type: 'layoutready',
            layout: layout
          });
          layout.one('layoutstop', options.stop);
          layout.emit({
            type: 'layoutstop',
            layout: layout
          });
        }
        return this; // chaining
      },

      layout: function layout(options) {
        var cy = this.cy();
        return cy.makeLayout(extend$1({}, options, {
          eles: this
        }));
      }
    };

    // aliases:
    elesfn$5.createLayout = elesfn$5.makeLayout = elesfn$5.layout;

    function styleCache(key, fn, ele) {
      var _p = ele._private;
      var cache = _p.styleCache = _p.styleCache || [];
      var val;
      if ((val = cache[key]) != null) {
        return val;
      } else {
        val = cache[key] = fn(ele);
        return val;
      }
    }
    function cacheStyleFunction(key, fn) {
      key = hashString(key);
      return function cachedStyleFunction(ele) {
        return styleCache(key, fn, ele);
      };
    }
    function cachePrototypeStyleFunction(key, fn) {
      key = hashString(key);
      var selfFn = function selfFn(ele) {
        return fn.call(ele);
      };
      return function cachedPrototypeStyleFunction() {
        var ele = this[0];
        if (ele) {
          return styleCache(key, selfFn, ele);
        }
      };
    }
    var elesfn$4 = {
      recalculateRenderedStyle: function recalculateRenderedStyle(useCache) {
        var cy = this.cy();
        var renderer = cy.renderer();
        var styleEnabled = cy.styleEnabled();
        if (renderer && styleEnabled) {
          renderer.recalculateRenderedStyle(this, useCache);
        }
        return this;
      },
      dirtyStyleCache: function dirtyStyleCache() {
        var cy = this.cy();
        var dirty = function dirty(ele) {
          return ele._private.styleCache = null;
        };
        if (cy.hasCompoundNodes()) {
          var eles;
          eles = this.spawnSelf().merge(this.descendants()).merge(this.parents());
          eles.merge(eles.connectedEdges());
          eles.forEach(dirty);
        } else {
          this.forEach(function (ele) {
            dirty(ele);
            ele.connectedEdges().forEach(dirty);
          });
        }
        return this;
      },
      // fully updates (recalculates) the style for the elements
      updateStyle: function updateStyle(notifyRenderer) {
        var cy = this._private.cy;
        if (!cy.styleEnabled()) {
          return this;
        }
        if (cy.batching()) {
          var bEles = cy._private.batchStyleEles;
          bEles.merge(this);
          return this; // chaining and exit early when batching
        }

        var hasCompounds = cy.hasCompoundNodes();
        var updatedEles = this;
        notifyRenderer = notifyRenderer || notifyRenderer === undefined ? true : false;
        if (hasCompounds) {
          // then add everything up and down for compound selector checks
          updatedEles = this.spawnSelf().merge(this.descendants()).merge(this.parents());
        }

        // let changedEles = style.apply( updatedEles );
        var changedEles = updatedEles;
        if (notifyRenderer) {
          changedEles.emitAndNotify('style'); // let renderer know we changed style
        } else {
          changedEles.emit('style'); // just fire the event
        }

        updatedEles.forEach(function (ele) {
          return ele._private.styleDirty = true;
        });
        return this; // chaining
      },

      // private: clears dirty flag and recalculates style
      cleanStyle: function cleanStyle() {
        var cy = this.cy();
        if (!cy.styleEnabled()) {
          return;
        }
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          if (ele._private.styleDirty) {
            // n.b. this flag should be set before apply() to avoid potential infinite recursion
            ele._private.styleDirty = false;
            cy.style().apply(ele);
          }
        }
      },
      // get the internal parsed style object for the specified property
      parsedStyle: function parsedStyle(property) {
        var includeNonDefault = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
        var ele = this[0];
        var cy = ele.cy();
        if (!cy.styleEnabled()) {
          return;
        }
        if (ele) {
          this.cleanStyle();
          var overriddenStyle = ele._private.style[property];
          if (overriddenStyle != null) {
            return overriddenStyle;
          } else if (includeNonDefault) {
            return cy.style().getDefaultProperty(property);
          } else {
            return null;
          }
        }
      },
      numericStyle: function numericStyle(property) {
        var ele = this[0];
        if (!ele.cy().styleEnabled()) {
          return;
        }
        if (ele) {
          var pstyle = ele.pstyle(property);
          return pstyle.pfValue !== undefined ? pstyle.pfValue : pstyle.value;
        }
      },
      numericStyleUnits: function numericStyleUnits(property) {
        var ele = this[0];
        if (!ele.cy().styleEnabled()) {
          return;
        }
        if (ele) {
          return ele.pstyle(property).units;
        }
      },
      // get the specified css property as a rendered value (i.e. on-screen value)
      // or get the whole rendered style if no property specified (NB doesn't allow setting)
      renderedStyle: function renderedStyle(property) {
        var cy = this.cy();
        if (!cy.styleEnabled()) {
          return this;
        }
        var ele = this[0];
        if (ele) {
          return cy.style().getRenderedStyle(ele, property);
        }
      },
      // read the calculated css style of the element or override the style (via a bypass)
      style: function style(name, value) {
        var cy = this.cy();
        if (!cy.styleEnabled()) {
          return this;
        }
        var updateTransitions = false;
        var style = cy.style();
        if (plainObject(name)) {
          // then extend the bypass
          var props = name;
          style.applyBypass(this, props, updateTransitions);
          this.emitAndNotify('style'); // let the renderer know we've updated style
        } else if (string(name)) {
          if (value === undefined) {
            // then get the property from the style
            var ele = this[0];
            if (ele) {
              return style.getStylePropertyValue(ele, name);
            } else {
              // empty collection => can't get any value
              return;
            }
          } else {
            // then set the bypass with the property value
            style.applyBypass(this, name, value, updateTransitions);
            this.emitAndNotify('style'); // let the renderer know we've updated style
          }
        } else if (name === undefined) {
          var _ele = this[0];
          if (_ele) {
            return style.getRawStyle(_ele);
          } else {
            // empty collection => can't get any value
            return;
          }
        }
        return this; // chaining
      },

      removeStyle: function removeStyle(names) {
        var cy = this.cy();
        if (!cy.styleEnabled()) {
          return this;
        }
        var updateTransitions = false;
        var style = cy.style();
        var eles = this;
        if (names === undefined) {
          for (var i = 0; i < eles.length; i++) {
            var ele = eles[i];
            style.removeAllBypasses(ele, updateTransitions);
          }
        } else {
          names = names.split(/\s+/);
          for (var _i = 0; _i < eles.length; _i++) {
            var _ele2 = eles[_i];
            style.removeBypasses(_ele2, names, updateTransitions);
          }
        }
        this.emitAndNotify('style'); // let the renderer know we've updated style

        return this; // chaining
      },

      show: function show() {
        this.css('display', 'element');
        return this; // chaining
      },

      hide: function hide() {
        this.css('display', 'none');
        return this; // chaining
      },

      effectiveOpacity: function effectiveOpacity() {
        var cy = this.cy();
        if (!cy.styleEnabled()) {
          return 1;
        }
        var hasCompoundNodes = cy.hasCompoundNodes();
        var ele = this[0];
        if (ele) {
          var _p = ele._private;
          var parentOpacity = ele.pstyle('opacity').value;
          if (!hasCompoundNodes) {
            return parentOpacity;
          }
          var parents = !_p.data.parent ? null : ele.parents();
          if (parents) {
            for (var i = 0; i < parents.length; i++) {
              var parent = parents[i];
              var opacity = parent.pstyle('opacity').value;
              parentOpacity = opacity * parentOpacity;
            }
          }
          return parentOpacity;
        }
      },
      transparent: function transparent() {
        var cy = this.cy();
        if (!cy.styleEnabled()) {
          return false;
        }
        var ele = this[0];
        var hasCompoundNodes = ele.cy().hasCompoundNodes();
        if (ele) {
          if (!hasCompoundNodes) {
            return ele.pstyle('opacity').value === 0;
          } else {
            return ele.effectiveOpacity() === 0;
          }
        }
      },
      backgrounding: function backgrounding() {
        var cy = this.cy();
        if (!cy.styleEnabled()) {
          return false;
        }
        var ele = this[0];
        return ele._private.backgrounding ? true : false;
      }
    };
    function checkCompound(ele, parentOk) {
      var _p = ele._private;
      var parents = _p.data.parent ? ele.parents() : null;
      if (parents) {
        for (var i = 0; i < parents.length; i++) {
          var parent = parents[i];
          if (!parentOk(parent)) {
            return false;
          }
        }
      }
      return true;
    }
    function defineDerivedStateFunction(specs) {
      var ok = specs.ok;
      var edgeOkViaNode = specs.edgeOkViaNode || specs.ok;
      var parentOk = specs.parentOk || specs.ok;
      return function () {
        var cy = this.cy();
        if (!cy.styleEnabled()) {
          return true;
        }
        var ele = this[0];
        var hasCompoundNodes = cy.hasCompoundNodes();
        if (ele) {
          var _p = ele._private;
          if (!ok(ele)) {
            return false;
          }
          if (ele.isNode()) {
            return !hasCompoundNodes || checkCompound(ele, parentOk);
          } else {
            var src = _p.source;
            var tgt = _p.target;
            return edgeOkViaNode(src) && (!hasCompoundNodes || checkCompound(src, edgeOkViaNode)) && (src === tgt || edgeOkViaNode(tgt) && (!hasCompoundNodes || checkCompound(tgt, edgeOkViaNode)));
          }
        }
      };
    }
    var eleTakesUpSpace = cacheStyleFunction('eleTakesUpSpace', function (ele) {
      return ele.pstyle('display').value === 'element' && ele.width() !== 0 && (ele.isNode() ? ele.height() !== 0 : true);
    });
    elesfn$4.takesUpSpace = cachePrototypeStyleFunction('takesUpSpace', defineDerivedStateFunction({
      ok: eleTakesUpSpace
    }));
    var eleInteractive = cacheStyleFunction('eleInteractive', function (ele) {
      return ele.pstyle('events').value === 'yes' && ele.pstyle('visibility').value === 'visible' && eleTakesUpSpace(ele);
    });
    var parentInteractive = cacheStyleFunction('parentInteractive', function (parent) {
      return parent.pstyle('visibility').value === 'visible' && eleTakesUpSpace(parent);
    });
    elesfn$4.interactive = cachePrototypeStyleFunction('interactive', defineDerivedStateFunction({
      ok: eleInteractive,
      parentOk: parentInteractive,
      edgeOkViaNode: eleTakesUpSpace
    }));
    elesfn$4.noninteractive = function () {
      var ele = this[0];
      if (ele) {
        return !ele.interactive();
      }
    };
    var eleVisible = cacheStyleFunction('eleVisible', function (ele) {
      return ele.pstyle('visibility').value === 'visible' && ele.pstyle('opacity').pfValue !== 0 && eleTakesUpSpace(ele);
    });
    var edgeVisibleViaNode = eleTakesUpSpace;
    elesfn$4.visible = cachePrototypeStyleFunction('visible', defineDerivedStateFunction({
      ok: eleVisible,
      edgeOkViaNode: edgeVisibleViaNode
    }));
    elesfn$4.hidden = function () {
      var ele = this[0];
      if (ele) {
        return !ele.visible();
      }
    };
    elesfn$4.isBundledBezier = cachePrototypeStyleFunction('isBundledBezier', function () {
      if (!this.cy().styleEnabled()) {
        return false;
      }
      return !this.removed() && this.pstyle('curve-style').value === 'bezier' && this.takesUpSpace();
    });
    elesfn$4.bypass = elesfn$4.css = elesfn$4.style;
    elesfn$4.renderedCss = elesfn$4.renderedStyle;
    elesfn$4.removeBypass = elesfn$4.removeCss = elesfn$4.removeStyle;
    elesfn$4.pstyle = elesfn$4.parsedStyle;

    var elesfn$3 = {};
    function defineSwitchFunction(params) {
      return function () {
        var args = arguments;
        var changedEles = [];

        // e.g. cy.nodes().select( data, handler )
        if (args.length === 2) {
          var data = args[0];
          var handler = args[1];
          this.on(params.event, data, handler);
        }

        // e.g. cy.nodes().select( handler )
        else if (args.length === 1 && fn$6(args[0])) {
          var _handler = args[0];
          this.on(params.event, _handler);
        }

        // e.g. cy.nodes().select()
        // e.g. (private) cy.nodes().select(['tapselect'])
        else if (args.length === 0 || args.length === 1 && array(args[0])) {
          var addlEvents = args.length === 1 ? args[0] : null;
          for (var i = 0; i < this.length; i++) {
            var ele = this[i];
            var able = !params.ableField || ele._private[params.ableField];
            var changed = ele._private[params.field] != params.value;
            if (params.overrideAble) {
              var overrideAble = params.overrideAble(ele);
              if (overrideAble !== undefined) {
                able = overrideAble;
                if (!overrideAble) {
                  return this;
                } // to save cycles assume not able for all on override
              }
            }

            if (able) {
              ele._private[params.field] = params.value;
              if (changed) {
                changedEles.push(ele);
              }
            }
          }
          var changedColl = this.spawn(changedEles);
          changedColl.updateStyle(); // change of state => possible change of style
          changedColl.emit(params.event);
          if (addlEvents) {
            changedColl.emit(addlEvents);
          }
        }
        return this;
      };
    }
    function defineSwitchSet(params) {
      elesfn$3[params.field] = function () {
        var ele = this[0];
        if (ele) {
          if (params.overrideField) {
            var val = params.overrideField(ele);
            if (val !== undefined) {
              return val;
            }
          }
          return ele._private[params.field];
        }
      };
      elesfn$3[params.on] = defineSwitchFunction({
        event: params.on,
        field: params.field,
        ableField: params.ableField,
        overrideAble: params.overrideAble,
        value: true
      });
      elesfn$3[params.off] = defineSwitchFunction({
        event: params.off,
        field: params.field,
        ableField: params.ableField,
        overrideAble: params.overrideAble,
        value: false
      });
    }
    defineSwitchSet({
      field: 'locked',
      overrideField: function overrideField(ele) {
        return ele.cy().autolock() ? true : undefined;
      },
      on: 'lock',
      off: 'unlock'
    });
    defineSwitchSet({
      field: 'grabbable',
      overrideField: function overrideField(ele) {
        return ele.cy().autoungrabify() || ele.pannable() ? false : undefined;
      },
      on: 'grabify',
      off: 'ungrabify'
    });
    defineSwitchSet({
      field: 'selected',
      ableField: 'selectable',
      overrideAble: function overrideAble(ele) {
        return ele.cy().autounselectify() ? false : undefined;
      },
      on: 'select',
      off: 'unselect'
    });
    defineSwitchSet({
      field: 'selectable',
      overrideField: function overrideField(ele) {
        return ele.cy().autounselectify() ? false : undefined;
      },
      on: 'selectify',
      off: 'unselectify'
    });
    elesfn$3.deselect = elesfn$3.unselect;
    elesfn$3.grabbed = function () {
      var ele = this[0];
      if (ele) {
        return ele._private.grabbed;
      }
    };
    defineSwitchSet({
      field: 'active',
      on: 'activate',
      off: 'unactivate'
    });
    defineSwitchSet({
      field: 'pannable',
      on: 'panify',
      off: 'unpanify'
    });
    elesfn$3.inactive = function () {
      var ele = this[0];
      if (ele) {
        return !ele._private.active;
      }
    };

    var elesfn$2 = {};

    // DAG functions
    ////////////////

    var defineDagExtremity = function defineDagExtremity(params) {
      return function dagExtremityImpl(selector) {
        var eles = this;
        var ret = [];
        for (var i = 0; i < eles.length; i++) {
          var ele = eles[i];
          if (!ele.isNode()) {
            continue;
          }
          var disqualified = false;
          var edges = ele.connectedEdges();
          for (var j = 0; j < edges.length; j++) {
            var edge = edges[j];
            var src = edge.source();
            var tgt = edge.target();
            if (params.noIncomingEdges && tgt === ele && src !== ele || params.noOutgoingEdges && src === ele && tgt !== ele) {
              disqualified = true;
              break;
            }
          }
          if (!disqualified) {
            ret.push(ele);
          }
        }
        return this.spawn(ret, true).filter(selector);
      };
    };
    var defineDagOneHop = function defineDagOneHop(params) {
      return function (selector) {
        var eles = this;
        var oEles = [];
        for (var i = 0; i < eles.length; i++) {
          var ele = eles[i];
          if (!ele.isNode()) {
            continue;
          }
          var edges = ele.connectedEdges();
          for (var j = 0; j < edges.length; j++) {
            var edge = edges[j];
            var src = edge.source();
            var tgt = edge.target();
            if (params.outgoing && src === ele) {
              oEles.push(edge);
              oEles.push(tgt);
            } else if (params.incoming && tgt === ele) {
              oEles.push(edge);
              oEles.push(src);
            }
          }
        }
        return this.spawn(oEles, true).filter(selector);
      };
    };
    var defineDagAllHops = function defineDagAllHops(params) {
      return function (selector) {
        var eles = this;
        var sEles = [];
        var sElesIds = {};
        for (;;) {
          var next = params.outgoing ? eles.outgoers() : eles.incomers();
          if (next.length === 0) {
            break;
          } // done if none left

          var newNext = false;
          for (var i = 0; i < next.length; i++) {
            var n = next[i];
            var nid = n.id();
            if (!sElesIds[nid]) {
              sElesIds[nid] = true;
              sEles.push(n);
              newNext = true;
            }
          }
          if (!newNext) {
            break;
          } // done if touched all outgoers already

          eles = next;
        }
        return this.spawn(sEles, true).filter(selector);
      };
    };
    elesfn$2.clearTraversalCache = function () {
      for (var i = 0; i < this.length; i++) {
        this[i]._private.traversalCache = null;
      }
    };
    extend$1(elesfn$2, {
      // get the root nodes in the DAG
      roots: defineDagExtremity({
        noIncomingEdges: true
      }),
      // get the leaf nodes in the DAG
      leaves: defineDagExtremity({
        noOutgoingEdges: true
      }),
      // normally called children in graph theory
      // these nodes =edges=> outgoing nodes
      outgoers: cache(defineDagOneHop({
        outgoing: true
      }), 'outgoers'),
      // aka DAG descendants
      successors: defineDagAllHops({
        outgoing: true
      }),
      // normally called parents in graph theory
      // these nodes <=edges= incoming nodes
      incomers: cache(defineDagOneHop({
        incoming: true
      }), 'incomers'),
      // aka DAG ancestors
      predecessors: defineDagAllHops({
        incoming: true
      })
    });

    // Neighbourhood functions
    //////////////////////////

    extend$1(elesfn$2, {
      neighborhood: cache(function (selector) {
        var elements = [];
        var nodes = this.nodes();
        for (var i = 0; i < nodes.length; i++) {
          // for all nodes
          var node = nodes[i];
          var connectedEdges = node.connectedEdges();

          // for each connected edge, add the edge and the other node
          for (var j = 0; j < connectedEdges.length; j++) {
            var edge = connectedEdges[j];
            var src = edge.source();
            var tgt = edge.target();
            var otherNode = node === src ? tgt : src;

            // need check in case of loop
            if (otherNode.length > 0) {
              elements.push(otherNode[0]); // add node 1 hop away
            }

            // add connected edge
            elements.push(edge[0]);
          }
        }
        return this.spawn(elements, true).filter(selector);
      }, 'neighborhood'),
      closedNeighborhood: function closedNeighborhood(selector) {
        return this.neighborhood().add(this).filter(selector);
      },
      openNeighborhood: function openNeighborhood(selector) {
        return this.neighborhood(selector);
      }
    });

    // aliases
    elesfn$2.neighbourhood = elesfn$2.neighborhood;
    elesfn$2.closedNeighbourhood = elesfn$2.closedNeighborhood;
    elesfn$2.openNeighbourhood = elesfn$2.openNeighborhood;

    // Edge functions
    /////////////////

    extend$1(elesfn$2, {
      source: cache(function sourceImpl(selector) {
        var ele = this[0];
        var src;
        if (ele) {
          src = ele._private.source || ele.cy().collection();
        }
        return src && selector ? src.filter(selector) : src;
      }, 'source'),
      target: cache(function targetImpl(selector) {
        var ele = this[0];
        var tgt;
        if (ele) {
          tgt = ele._private.target || ele.cy().collection();
        }
        return tgt && selector ? tgt.filter(selector) : tgt;
      }, 'target'),
      sources: defineSourceFunction({
        attr: 'source'
      }),
      targets: defineSourceFunction({
        attr: 'target'
      })
    });
    function defineSourceFunction(params) {
      return function sourceImpl(selector) {
        var sources = [];
        for (var i = 0; i < this.length; i++) {
          var ele = this[i];
          var src = ele._private[params.attr];
          if (src) {
            sources.push(src);
          }
        }
        return this.spawn(sources, true).filter(selector);
      };
    }
    extend$1(elesfn$2, {
      edgesWith: cache(defineEdgesWithFunction(), 'edgesWith'),
      edgesTo: cache(defineEdgesWithFunction({
        thisIsSrc: true
      }), 'edgesTo')
    });
    function defineEdgesWithFunction(params) {
      return function edgesWithImpl(otherNodes) {
        var elements = [];
        var cy = this._private.cy;
        var p = params || {};

        // get elements if a selector is specified
        if (string(otherNodes)) {
          otherNodes = cy.$(otherNodes);
        }
        for (var h = 0; h < otherNodes.length; h++) {
          var edges = otherNodes[h]._private.edges;
          for (var i = 0; i < edges.length; i++) {
            var edge = edges[i];
            var edgeData = edge._private.data;
            var thisToOther = this.hasElementWithId(edgeData.source) && otherNodes.hasElementWithId(edgeData.target);
            var otherToThis = otherNodes.hasElementWithId(edgeData.source) && this.hasElementWithId(edgeData.target);
            var edgeConnectsThisAndOther = thisToOther || otherToThis;
            if (!edgeConnectsThisAndOther) {
              continue;
            }
            if (p.thisIsSrc || p.thisIsTgt) {
              if (p.thisIsSrc && !thisToOther) {
                continue;
              }
              if (p.thisIsTgt && !otherToThis) {
                continue;
              }
            }
            elements.push(edge);
          }
        }
        return this.spawn(elements, true);
      };
    }
    extend$1(elesfn$2, {
      connectedEdges: cache(function (selector) {
        var retEles = [];
        var eles = this;
        for (var i = 0; i < eles.length; i++) {
          var node = eles[i];
          if (!node.isNode()) {
            continue;
          }
          var edges = node._private.edges;
          for (var j = 0; j < edges.length; j++) {
            var edge = edges[j];
            retEles.push(edge);
          }
        }
        return this.spawn(retEles, true).filter(selector);
      }, 'connectedEdges'),
      connectedNodes: cache(function (selector) {
        var retEles = [];
        var eles = this;
        for (var i = 0; i < eles.length; i++) {
          var edge = eles[i];
          if (!edge.isEdge()) {
            continue;
          }
          retEles.push(edge.source()[0]);
          retEles.push(edge.target()[0]);
        }
        return this.spawn(retEles, true).filter(selector);
      }, 'connectedNodes'),
      parallelEdges: cache(defineParallelEdgesFunction(), 'parallelEdges'),
      codirectedEdges: cache(defineParallelEdgesFunction({
        codirected: true
      }), 'codirectedEdges')
    });
    function defineParallelEdgesFunction(params) {
      var defaults = {
        codirected: false
      };
      params = extend$1({}, defaults, params);
      return function parallelEdgesImpl(selector) {
        // micro-optimised for renderer
        var elements = [];
        var edges = this.edges();
        var p = params;

        // look at all the edges in the collection
        for (var i = 0; i < edges.length; i++) {
          var edge1 = edges[i];
          var edge1_p = edge1._private;
          var src1 = edge1_p.source;
          var srcid1 = src1._private.data.id;
          var tgtid1 = edge1_p.data.target;
          var srcEdges1 = src1._private.edges;

          // look at edges connected to the src node of this edge
          for (var j = 0; j < srcEdges1.length; j++) {
            var edge2 = srcEdges1[j];
            var edge2data = edge2._private.data;
            var tgtid2 = edge2data.target;
            var srcid2 = edge2data.source;
            var codirected = tgtid2 === tgtid1 && srcid2 === srcid1;
            var oppdirected = srcid1 === tgtid2 && tgtid1 === srcid2;
            if (p.codirected && codirected || !p.codirected && (codirected || oppdirected)) {
              elements.push(edge2);
            }
          }
        }
        return this.spawn(elements, true).filter(selector);
      };
    }

    // Misc functions
    /////////////////

    extend$1(elesfn$2, {
      components: function components(root) {
        var self = this;
        var cy = self.cy();
        var visited = cy.collection();
        var unvisited = root == null ? self.nodes() : root.nodes();
        var components = [];
        if (root != null && unvisited.empty()) {
          // root may contain only edges
          unvisited = root.sources(); // doesn't matter which node to use (undirected), so just use the source sides
        }

        var visitInComponent = function visitInComponent(node, component) {
          visited.merge(node);
          unvisited.unmerge(node);
          component.merge(node);
        };
        if (unvisited.empty()) {
          return self.spawn();
        }
        var _loop = function _loop() {
          // each iteration yields a component
          var cmpt = cy.collection();
          components.push(cmpt);
          var root = unvisited[0];
          visitInComponent(root, cmpt);
          self.bfs({
            directed: false,
            roots: root,
            visit: function visit(v) {
              return visitInComponent(v, cmpt);
            }
          });
          cmpt.forEach(function (node) {
            node.connectedEdges().forEach(function (e) {
              // connectedEdges() usually cached
              if (self.has(e) && cmpt.has(e.source()) && cmpt.has(e.target())) {
                // has() is cheap
                cmpt.merge(e); // forEach() only considers nodes -- sets N at call time
              }
            });
          });
        };
        do {
          _loop();
        } while (unvisited.length > 0);
        return components;
      },
      component: function component() {
        var ele = this[0];
        return ele.cy().mutableElements().components(ele)[0];
      }
    });
    elesfn$2.componentsOf = elesfn$2.components;

    // represents a set of nodes, edges, or both together
    var Collection = function Collection(cy, elements) {
      var unique = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
      var removed = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;
      if (cy === undefined) {
        error('A collection must have a reference to the core');
        return;
      }
      var map = new Map$2();
      var createdElements = false;
      if (!elements) {
        elements = [];
      } else if (elements.length > 0 && plainObject(elements[0]) && !element(elements[0])) {
        createdElements = true;

        // make elements from json and restore all at once later
        var eles = [];
        var elesIds = new Set$1();
        for (var i = 0, l = elements.length; i < l; i++) {
          var json = elements[i];
          if (json.data == null) {
            json.data = {};
          }
          var _data = json.data;

          // make sure newly created elements have valid ids
          if (_data.id == null) {
            _data.id = uuid();
          } else if (cy.hasElementWithId(_data.id) || elesIds.has(_data.id)) {
            continue; // can't create element if prior id already exists
          }

          var ele = new Element(cy, json, false);
          eles.push(ele);
          elesIds.add(_data.id);
        }
        elements = eles;
      }
      this.length = 0;
      for (var _i = 0, _l = elements.length; _i < _l; _i++) {
        var element$1 = elements[_i][0]; // [0] in case elements is an array of collections, rather than array of elements
        if (element$1 == null) {
          continue;
        }
        var id = element$1._private.data.id;
        if (!unique || !map.has(id)) {
          if (unique) {
            map.set(id, {
              index: this.length,
              ele: element$1
            });
          }
          this[this.length] = element$1;
          this.length++;
        }
      }
      this._private = {
        eles: this,
        cy: cy,
        get map() {
          if (this.lazyMap == null) {
            this.rebuildMap();
          }
          return this.lazyMap;
        },
        set map(m) {
          this.lazyMap = m;
        },
        rebuildMap: function rebuildMap() {
          var m = this.lazyMap = new Map$2();
          var eles = this.eles;
          for (var _i2 = 0; _i2 < eles.length; _i2++) {
            var _ele = eles[_i2];
            m.set(_ele.id(), {
              index: _i2,
              ele: _ele
            });
          }
        }
      };
      if (unique) {
        this._private.map = map;
      }

      // restore the elements if we created them from json
      if (createdElements && !removed) {
        this.restore();
      }
    };

    // Functions
    ////////////////////////////////////////////////////////////////////////////////////////////////////

    // keep the prototypes in sync (an element has the same functions as a collection)
    // and use elefn and elesfn as shorthands to the prototypes
    var elesfn$1 = Element.prototype = Collection.prototype = Object.create(Array.prototype);
    elesfn$1.instanceString = function () {
      return 'collection';
    };
    elesfn$1.spawn = function (eles, unique) {
      return new Collection(this.cy(), eles, unique);
    };
    elesfn$1.spawnSelf = function () {
      return this.spawn(this);
    };
    elesfn$1.cy = function () {
      return this._private.cy;
    };
    elesfn$1.renderer = function () {
      return this._private.cy.renderer();
    };
    elesfn$1.element = function () {
      return this[0];
    };
    elesfn$1.collection = function () {
      if (collection(this)) {
        return this;
      } else {
        // an element
        return new Collection(this._private.cy, [this]);
      }
    };
    elesfn$1.unique = function () {
      return new Collection(this._private.cy, this, true);
    };
    elesfn$1.hasElementWithId = function (id) {
      id = '' + id; // id must be string

      return this._private.map.has(id);
    };
    elesfn$1.getElementById = function (id) {
      id = '' + id; // id must be string

      var cy = this._private.cy;
      var entry = this._private.map.get(id);
      return entry ? entry.ele : new Collection(cy); // get ele or empty collection
    };

    elesfn$1.$id = elesfn$1.getElementById;
    elesfn$1.poolIndex = function () {
      var cy = this._private.cy;
      var eles = cy._private.elements;
      var id = this[0]._private.data.id;
      return eles._private.map.get(id).index;
    };
    elesfn$1.indexOf = function (ele) {
      var id = ele[0]._private.data.id;
      return this._private.map.get(id).index;
    };
    elesfn$1.indexOfId = function (id) {
      id = '' + id; // id must be string

      return this._private.map.get(id).index;
    };
    elesfn$1.json = function (obj) {
      var ele = this.element();
      var cy = this.cy();
      if (ele == null && obj) {
        return this;
      } // can't set to no eles

      if (ele == null) {
        return undefined;
      } // can't get from no eles

      var p = ele._private;
      if (plainObject(obj)) {
        // set

        cy.startBatch();
        if (obj.data) {
          ele.data(obj.data);
          var _data2 = p.data;
          if (ele.isEdge()) {
            // source and target are immutable via data()
            var move = false;
            var spec = {};
            var src = obj.data.source;
            var tgt = obj.data.target;
            if (src != null && src != _data2.source) {
              spec.source = '' + src; // id must be string
              move = true;
            }
            if (tgt != null && tgt != _data2.target) {
              spec.target = '' + tgt; // id must be string
              move = true;
            }
            if (move) {
              ele = ele.move(spec);
            }
          } else {
            // parent is immutable via data()
            var newParentValSpecd = ('parent' in obj.data);
            var parent = obj.data.parent;
            if (newParentValSpecd && (parent != null || _data2.parent != null) && parent != _data2.parent) {
              if (parent === undefined) {
                // can't set undefined imperatively, so use null
                parent = null;
              }
              if (parent != null) {
                parent = '' + parent; // id must be string
              }

              ele = ele.move({
                parent: parent
              });
            }
          }
        }
        if (obj.position) {
          ele.position(obj.position);
        }

        // ignore group -- immutable

        var checkSwitch = function checkSwitch(k, trueFnName, falseFnName) {
          var obj_k = obj[k];
          if (obj_k != null && obj_k !== p[k]) {
            if (obj_k) {
              ele[trueFnName]();
            } else {
              ele[falseFnName]();
            }
          }
        };
        checkSwitch('removed', 'remove', 'restore');
        checkSwitch('selected', 'select', 'unselect');
        checkSwitch('selectable', 'selectify', 'unselectify');
        checkSwitch('locked', 'lock', 'unlock');
        checkSwitch('grabbable', 'grabify', 'ungrabify');
        checkSwitch('pannable', 'panify', 'unpanify');
        if (obj.classes != null) {
          ele.classes(obj.classes);
        }
        cy.endBatch();
        return this;
      } else if (obj === undefined) {
        // get

        var json = {
          data: copy(p.data),
          position: copy(p.position),
          group: p.group,
          removed: p.removed,
          selected: p.selected,
          selectable: p.selectable,
          locked: p.locked,
          grabbable: p.grabbable,
          pannable: p.pannable,
          classes: null
        };
        json.classes = '';
        var i = 0;
        p.classes.forEach(function (cls) {
          return json.classes += i++ === 0 ? cls : ' ' + cls;
        });
        return json;
      }
    };
    elesfn$1.jsons = function () {
      var jsons = [];
      for (var i = 0; i < this.length; i++) {
        var ele = this[i];
        var json = ele.json();
        jsons.push(json);
      }
      return jsons;
    };
    elesfn$1.clone = function () {
      var cy = this.cy();
      var elesArr = [];
      for (var i = 0; i < this.length; i++) {
        var ele = this[i];
        var json = ele.json();
        var clone = new Element(cy, json, false); // NB no restore

        elesArr.push(clone);
      }
      return new Collection(cy, elesArr);
    };
    elesfn$1.copy = elesfn$1.clone;
    elesfn$1.restore = function () {
      var notifyRenderer = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;
      var addToPool = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
      var self = this;
      var cy = self.cy();
      var cy_p = cy._private;

      // create arrays of nodes and edges, since we need to
      // restore the nodes first
      var nodes = [];
      var edges = [];
      var elements;
      for (var _i3 = 0, l = self.length; _i3 < l; _i3++) {
        var ele = self[_i3];
        if (addToPool && !ele.removed()) {
          // don't need to handle this ele
          continue;
        }

        // keep nodes first in the array and edges after
        if (ele.isNode()) {
          // put to front of array if node
          nodes.push(ele);
        } else {
          // put to end of array if edge
          edges.push(ele);
        }
      }
      elements = nodes.concat(edges);
      var i;
      var removeFromElements = function removeFromElements() {
        elements.splice(i, 1);
        i--;
      };

      // now, restore each element
      for (i = 0; i < elements.length; i++) {
        var _ele2 = elements[i];
        var _private = _ele2._private;
        var _data3 = _private.data;

        // the traversal cache should start fresh when ele is added
        _ele2.clearTraversalCache();

        // set id and validate
        if (!addToPool && !_private.removed) ; else if (_data3.id === undefined) {
          _data3.id = uuid();
        } else if (number$1(_data3.id)) {
          _data3.id = '' + _data3.id; // now it's a string
        } else if (emptyString(_data3.id) || !string(_data3.id)) {
          error('Can not create element with invalid string ID `' + _data3.id + '`');

          // can't create element if it has empty string as id or non-string id
          removeFromElements();
          continue;
        } else if (cy.hasElementWithId(_data3.id)) {
          error('Can not create second element with ID `' + _data3.id + '`');

          // can't create element if one already has that id
          removeFromElements();
          continue;
        }
        var id = _data3.id; // id is finalised, now let's keep a ref

        if (_ele2.isNode()) {
          // extra checks for nodes
          var pos = _private.position;

          // make sure the nodes have a defined position

          if (pos.x == null) {
            pos.x = 0;
          }
          if (pos.y == null) {
            pos.y = 0;
          }
        }
        if (_ele2.isEdge()) {
          // extra checks for edges

          var edge = _ele2;
          var fields = ['source', 'target'];
          var fieldsLength = fields.length;
          var badSourceOrTarget = false;
          for (var j = 0; j < fieldsLength; j++) {
            var field = fields[j];
            var val = _data3[field];
            if (number$1(val)) {
              val = _data3[field] = '' + _data3[field]; // now string
            }

            if (val == null || val === '') {
              // can't create if source or target is not defined properly
              error('Can not create edge `' + id + '` with unspecified ' + field);
              badSourceOrTarget = true;
            } else if (!cy.hasElementWithId(val)) {
              // can't create edge if one of its nodes doesn't exist
              error('Can not create edge `' + id + '` with nonexistant ' + field + ' `' + val + '`');
              badSourceOrTarget = true;
            }
          }
          if (badSourceOrTarget) {
            removeFromElements();
            continue;
          } // can't create this

          var src = cy.getElementById(_data3.source);
          var tgt = cy.getElementById(_data3.target);

          // only one edge in node if loop
          if (src.same(tgt)) {
            src._private.edges.push(edge);
          } else {
            src._private.edges.push(edge);
            tgt._private.edges.push(edge);
          }
          edge._private.source = src;
          edge._private.target = tgt;
        } // if is edge

        // create mock ids / indexes maps for element so it can be used like collections
        _private.map = new Map$2();
        _private.map.set(id, {
          ele: _ele2,
          index: 0
        });
        _private.removed = false;
        if (addToPool) {
          cy.addToPool(_ele2);
        }
      } // for each element

      // do compound node sanity checks
      for (var _i4 = 0; _i4 < nodes.length; _i4++) {
        // each node
        var node = nodes[_i4];
        var _data4 = node._private.data;
        if (number$1(_data4.parent)) {
          // then automake string
          _data4.parent = '' + _data4.parent;
        }
        var parentId = _data4.parent;
        var specifiedParent = parentId != null;
        if (specifiedParent || node._private.parent) {
          var parent = node._private.parent ? cy.collection().merge(node._private.parent) : cy.getElementById(parentId);
          if (parent.empty()) {
            // non-existant parent; just remove it
            _data4.parent = undefined;
          } else if (parent[0].removed()) {
            warn('Node added with missing parent, reference to parent removed');
            _data4.parent = undefined;
            node._private.parent = null;
          } else {
            var selfAsParent = false;
            var ancestor = parent;
            while (!ancestor.empty()) {
              if (node.same(ancestor)) {
                // mark self as parent and remove from data
                selfAsParent = true;
                _data4.parent = undefined; // remove parent reference

                // exit or we loop forever
                break;
              }
              ancestor = ancestor.parent();
            }
            if (!selfAsParent) {
              // connect with children
              parent[0]._private.children.push(node);
              node._private.parent = parent[0];

              // let the core know we have a compound graph
              cy_p.hasCompoundNodes = true;
            }
          } // else
        } // if specified parent
      } // for each node

      if (elements.length > 0) {
        var restored = elements.length === self.length ? self : new Collection(cy, elements);
        for (var _i5 = 0; _i5 < restored.length; _i5++) {
          var _ele3 = restored[_i5];
          if (_ele3.isNode()) {
            continue;
          }

          // adding an edge invalidates the traversal caches for the parallel edges
          _ele3.parallelEdges().clearTraversalCache();

          // adding an edge invalidates the traversal cache for the connected nodes
          _ele3.source().clearTraversalCache();
          _ele3.target().clearTraversalCache();
        }
        var toUpdateStyle;
        if (cy_p.hasCompoundNodes) {
          toUpdateStyle = cy.collection().merge(restored).merge(restored.connectedNodes()).merge(restored.parent());
        } else {
          toUpdateStyle = restored;
        }
        toUpdateStyle.dirtyCompoundBoundsCache().dirtyBoundingBoxCache().updateStyle(notifyRenderer);
        if (notifyRenderer) {
          restored.emitAndNotify('add');
        } else if (addToPool) {
          restored.emit('add');
        }
      }
      return self; // chainability
    };

    elesfn$1.removed = function () {
      var ele = this[0];
      return ele && ele._private.removed;
    };
    elesfn$1.inside = function () {
      var ele = this[0];
      return ele && !ele._private.removed;
    };
    elesfn$1.remove = function () {
      var notifyRenderer = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;
      var removeFromPool = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
      var self = this;
      var elesToRemove = [];
      var elesToRemoveIds = {};
      var cy = self._private.cy;

      // add connected edges
      function addConnectedEdges(node) {
        var edges = node._private.edges;
        for (var i = 0; i < edges.length; i++) {
          add(edges[i]);
        }
      }

      // add descendant nodes
      function addChildren(node) {
        var children = node._private.children;
        for (var i = 0; i < children.length; i++) {
          add(children[i]);
        }
      }
      function add(ele) {
        var alreadyAdded = elesToRemoveIds[ele.id()];
        if (removeFromPool && ele.removed() || alreadyAdded) {
          return;
        } else {
          elesToRemoveIds[ele.id()] = true;
        }
        if (ele.isNode()) {
          elesToRemove.push(ele); // nodes are removed last

          addConnectedEdges(ele);
          addChildren(ele);
        } else {
          elesToRemove.unshift(ele); // edges are removed first
        }
      }

      // make the list of elements to remove
      // (may be removing more than specified due to connected edges etc)

      for (var i = 0, l = self.length; i < l; i++) {
        var ele = self[i];
        add(ele);
      }
      function removeEdgeRef(node, edge) {
        var connectedEdges = node._private.edges;
        removeFromArray(connectedEdges, edge);

        // removing an edges invalidates the traversal cache for its nodes
        node.clearTraversalCache();
      }
      function removeParallelRef(pllEdge) {
        // removing an edge invalidates the traversal caches for the parallel edges
        pllEdge.clearTraversalCache();
      }
      var alteredParents = [];
      alteredParents.ids = {};
      function removeChildRef(parent, ele) {
        ele = ele[0];
        parent = parent[0];
        var children = parent._private.children;
        var pid = parent.id();
        removeFromArray(children, ele); // remove parent => child ref

        ele._private.parent = null; // remove child => parent ref

        if (!alteredParents.ids[pid]) {
          alteredParents.ids[pid] = true;
          alteredParents.push(parent);
        }
      }
      self.dirtyCompoundBoundsCache();
      if (removeFromPool) {
        cy.removeFromPool(elesToRemove); // remove from core pool
      }

      for (var _i6 = 0; _i6 < elesToRemove.length; _i6++) {
        var _ele4 = elesToRemove[_i6];
        if (_ele4.isEdge()) {
          // remove references to this edge in its connected nodes
          var src = _ele4.source()[0];
          var tgt = _ele4.target()[0];
          removeEdgeRef(src, _ele4);
          removeEdgeRef(tgt, _ele4);
          var pllEdges = _ele4.parallelEdges();
          for (var j = 0; j < pllEdges.length; j++) {
            var pllEdge = pllEdges[j];
            removeParallelRef(pllEdge);
            if (pllEdge.isBundledBezier()) {
              pllEdge.dirtyBoundingBoxCache();
            }
          }
        } else {
          // remove reference to parent
          var parent = _ele4.parent();
          if (parent.length !== 0) {
            removeChildRef(parent, _ele4);
          }
        }
        if (removeFromPool) {
          // mark as removed
          _ele4._private.removed = true;
        }
      }

      // check to see if we have a compound graph or not
      var elesStillInside = cy._private.elements;
      cy._private.hasCompoundNodes = false;
      for (var _i7 = 0; _i7 < elesStillInside.length; _i7++) {
        var _ele5 = elesStillInside[_i7];
        if (_ele5.isParent()) {
          cy._private.hasCompoundNodes = true;
          break;
        }
      }
      var removedElements = new Collection(this.cy(), elesToRemove);
      if (removedElements.size() > 0) {
        // must manually notify since trigger won't do this automatically once removed

        if (notifyRenderer) {
          removedElements.emitAndNotify('remove');
        } else if (removeFromPool) {
          removedElements.emit('remove');
        }
      }

      // the parents who were modified by the removal need their style updated
      for (var _i8 = 0; _i8 < alteredParents.length; _i8++) {
        var _ele6 = alteredParents[_i8];
        if (!removeFromPool || !_ele6.removed()) {
          _ele6.updateStyle();
        }
      }
      return removedElements;
    };
    elesfn$1.move = function (struct) {
      var cy = this._private.cy;
      var eles = this;

      // just clean up refs, caches, etc. in the same way as when removing and then restoring
      // (our calls to remove/restore do not remove from the graph or make events)
      var notifyRenderer = false;
      var modifyPool = false;
      var toString = function toString(id) {
        return id == null ? id : '' + id;
      }; // id must be string

      if (struct.source !== undefined || struct.target !== undefined) {
        var srcId = toString(struct.source);
        var tgtId = toString(struct.target);
        var srcExists = srcId != null && cy.hasElementWithId(srcId);
        var tgtExists = tgtId != null && cy.hasElementWithId(tgtId);
        if (srcExists || tgtExists) {
          cy.batch(function () {
            // avoid duplicate style updates
            eles.remove(notifyRenderer, modifyPool); // clean up refs etc.
            eles.emitAndNotify('moveout');
            for (var i = 0; i < eles.length; i++) {
              var ele = eles[i];
              var _data5 = ele._private.data;
              if (ele.isEdge()) {
                if (srcExists) {
                  _data5.source = srcId;
                }
                if (tgtExists) {
                  _data5.target = tgtId;
                }
              }
            }
            eles.restore(notifyRenderer, modifyPool); // make new refs, style, etc.
          });

          eles.emitAndNotify('move');
        }
      } else if (struct.parent !== undefined) {
        // move node to new parent
        var parentId = toString(struct.parent);
        var parentExists = parentId === null || cy.hasElementWithId(parentId);
        if (parentExists) {
          var pidToAssign = parentId === null ? undefined : parentId;
          cy.batch(function () {
            // avoid duplicate style updates
            var updated = eles.remove(notifyRenderer, modifyPool); // clean up refs etc.
            updated.emitAndNotify('moveout');
            for (var i = 0; i < eles.length; i++) {
              var ele = eles[i];
              var _data6 = ele._private.data;
              if (ele.isNode()) {
                _data6.parent = pidToAssign;
              }
            }
            updated.restore(notifyRenderer, modifyPool); // make new refs, style, etc.
          });

          eles.emitAndNotify('move');
        }
      }
      return this;
    };
    [elesfn$j, elesfn$i, elesfn$h, elesfn$g, elesfn$f, data, elesfn$d, dimensions, elesfn$9, elesfn$8, elesfn$7, elesfn$6, elesfn$5, elesfn$4, elesfn$3, elesfn$2].forEach(function (props) {
      extend$1(elesfn$1, props);
    });

    var corefn$9 = {
      add: function add(opts) {
        var elements;
        var cy = this;

        // add the elements
        if (elementOrCollection(opts)) {
          var eles = opts;
          if (eles._private.cy === cy) {
            // same instance => just restore
            elements = eles.restore();
          } else {
            // otherwise, copy from json
            var jsons = [];
            for (var i = 0; i < eles.length; i++) {
              var ele = eles[i];
              jsons.push(ele.json());
            }
            elements = new Collection(cy, jsons);
          }
        }

        // specify an array of options
        else if (array(opts)) {
          var _jsons = opts;
          elements = new Collection(cy, _jsons);
        }

        // specify via opts.nodes and opts.edges
        else if (plainObject(opts) && (array(opts.nodes) || array(opts.edges))) {
          var elesByGroup = opts;
          var _jsons2 = [];
          var grs = ['nodes', 'edges'];
          for (var _i = 0, il = grs.length; _i < il; _i++) {
            var group = grs[_i];
            var elesArray = elesByGroup[group];
            if (array(elesArray)) {
              for (var j = 0, jl = elesArray.length; j < jl; j++) {
                var json = extend$1({
                  group: group
                }, elesArray[j]);
                _jsons2.push(json);
              }
            }
          }
          elements = new Collection(cy, _jsons2);
        }

        // specify options for one element
        else {
          var _json = opts;
          elements = new Element(cy, _json).collection();
        }
        return elements;
      },
      remove: function remove(collection) {
        if (elementOrCollection(collection)) ; else if (string(collection)) {
          var selector = collection;
          collection = this.$(selector);
        }
        return collection.remove();
      }
    };

    /* global Float32Array */

    /*! Bezier curve function generator. Copyright Gaetan Renaudeau. MIT License: http://en.wikipedia.org/wiki/MIT_License */
    function generateCubicBezier(mX1, mY1, mX2, mY2) {
      var NEWTON_ITERATIONS = 4,
        NEWTON_MIN_SLOPE = 0.001,
        SUBDIVISION_PRECISION = 0.0000001,
        SUBDIVISION_MAX_ITERATIONS = 10,
        kSplineTableSize = 11,
        kSampleStepSize = 1.0 / (kSplineTableSize - 1.0),
        float32ArraySupported = typeof Float32Array !== 'undefined';

      /* Must contain four arguments. */
      if (arguments.length !== 4) {
        return false;
      }

      /* Arguments must be numbers. */
      for (var i = 0; i < 4; ++i) {
        if (typeof arguments[i] !== "number" || isNaN(arguments[i]) || !isFinite(arguments[i])) {
          return false;
        }
      }

      /* X values must be in the [0, 1] range. */
      mX1 = Math.min(mX1, 1);
      mX2 = Math.min(mX2, 1);
      mX1 = Math.max(mX1, 0);
      mX2 = Math.max(mX2, 0);
      var mSampleValues = float32ArraySupported ? new Float32Array(kSplineTableSize) : new Array(kSplineTableSize);
      function A(aA1, aA2) {
        return 1.0 - 3.0 * aA2 + 3.0 * aA1;
      }
      function B(aA1, aA2) {
        return 3.0 * aA2 - 6.0 * aA1;
      }
      function C(aA1) {
        return 3.0 * aA1;
      }
      function calcBezier(aT, aA1, aA2) {
        return ((A(aA1, aA2) * aT + B(aA1, aA2)) * aT + C(aA1)) * aT;
      }
      function getSlope(aT, aA1, aA2) {
        return 3.0 * A(aA1, aA2) * aT * aT + 2.0 * B(aA1, aA2) * aT + C(aA1);
      }
      function newtonRaphsonIterate(aX, aGuessT) {
        for (var _i = 0; _i < NEWTON_ITERATIONS; ++_i) {
          var currentSlope = getSlope(aGuessT, mX1, mX2);
          if (currentSlope === 0.0) {
            return aGuessT;
          }
          var currentX = calcBezier(aGuessT, mX1, mX2) - aX;
          aGuessT -= currentX / currentSlope;
        }
        return aGuessT;
      }
      function calcSampleValues() {
        for (var _i2 = 0; _i2 < kSplineTableSize; ++_i2) {
          mSampleValues[_i2] = calcBezier(_i2 * kSampleStepSize, mX1, mX2);
        }
      }
      function binarySubdivide(aX, aA, aB) {
        var currentX,
          currentT,
          i = 0;
        do {
          currentT = aA + (aB - aA) / 2.0;
          currentX = calcBezier(currentT, mX1, mX2) - aX;
          if (currentX > 0.0) {
            aB = currentT;
          } else {
            aA = currentT;
          }
        } while (Math.abs(currentX) > SUBDIVISION_PRECISION && ++i < SUBDIVISION_MAX_ITERATIONS);
        return currentT;
      }
      function getTForX(aX) {
        var intervalStart = 0.0,
          currentSample = 1,
          lastSample = kSplineTableSize - 1;
        for (; currentSample !== lastSample && mSampleValues[currentSample] <= aX; ++currentSample) {
          intervalStart += kSampleStepSize;
        }
        --currentSample;
        var dist = (aX - mSampleValues[currentSample]) / (mSampleValues[currentSample + 1] - mSampleValues[currentSample]),
          guessForT = intervalStart + dist * kSampleStepSize,
          initialSlope = getSlope(guessForT, mX1, mX2);
        if (initialSlope >= NEWTON_MIN_SLOPE) {
          return newtonRaphsonIterate(aX, guessForT);
        } else if (initialSlope === 0.0) {
          return guessForT;
        } else {
          return binarySubdivide(aX, intervalStart, intervalStart + kSampleStepSize);
        }
      }
      var _precomputed = false;
      function precompute() {
        _precomputed = true;
        if (mX1 !== mY1 || mX2 !== mY2) {
          calcSampleValues();
        }
      }
      var f = function f(aX) {
        if (!_precomputed) {
          precompute();
        }
        if (mX1 === mY1 && mX2 === mY2) {
          return aX;
        }
        if (aX === 0) {
          return 0;
        }
        if (aX === 1) {
          return 1;
        }
        return calcBezier(getTForX(aX), mY1, mY2);
      };
      f.getControlPoints = function () {
        return [{
          x: mX1,
          y: mY1
        }, {
          x: mX2,
          y: mY2
        }];
      };
      var str = "generateBezier(" + [mX1, mY1, mX2, mY2] + ")";
      f.toString = function () {
        return str;
      };
      return f;
    }

    /*! Runge-Kutta spring physics function generator. Adapted from Framer.js, copyright Koen Bok. MIT License: http://en.wikipedia.org/wiki/MIT_License */
    /* Given a tension, friction, and duration, a simulation at 60FPS will first run without a defined duration in order to calculate the full path. A second pass
       then adjusts the time delta -- using the relation between actual time and duration -- to calculate the path for the duration-constrained animation. */
    var generateSpringRK4 = function () {
      function springAccelerationForState(state) {
        return -state.tension * state.x - state.friction * state.v;
      }
      function springEvaluateStateWithDerivative(initialState, dt, derivative) {
        var state = {
          x: initialState.x + derivative.dx * dt,
          v: initialState.v + derivative.dv * dt,
          tension: initialState.tension,
          friction: initialState.friction
        };
        return {
          dx: state.v,
          dv: springAccelerationForState(state)
        };
      }
      function springIntegrateState(state, dt) {
        var a = {
            dx: state.v,
            dv: springAccelerationForState(state)
          },
          b = springEvaluateStateWithDerivative(state, dt * 0.5, a),
          c = springEvaluateStateWithDerivative(state, dt * 0.5, b),
          d = springEvaluateStateWithDerivative(state, dt, c),
          dxdt = 1.0 / 6.0 * (a.dx + 2.0 * (b.dx + c.dx) + d.dx),
          dvdt = 1.0 / 6.0 * (a.dv + 2.0 * (b.dv + c.dv) + d.dv);
        state.x = state.x + dxdt * dt;
        state.v = state.v + dvdt * dt;
        return state;
      }
      return function springRK4Factory(tension, friction, duration) {
        var initState = {
            x: -1,
            v: 0,
            tension: null,
            friction: null
          },
          path = [0],
          time_lapsed = 0,
          tolerance = 1 / 10000,
          DT = 16 / 1000,
          have_duration,
          dt,
          last_state;
        tension = parseFloat(tension) || 500;
        friction = parseFloat(friction) || 20;
        duration = duration || null;
        initState.tension = tension;
        initState.friction = friction;
        have_duration = duration !== null;

        /* Calculate the actual time it takes for this animation to complete with the provided conditions. */
        if (have_duration) {
          /* Run the simulation without a duration. */
          time_lapsed = springRK4Factory(tension, friction);
          /* Compute the adjusted time delta. */
          dt = time_lapsed / duration * DT;
        } else {
          dt = DT;
        }
        for (;;) {
          /* Next/step function .*/
          last_state = springIntegrateState(last_state || initState, dt);
          /* Store the position. */
          path.push(1 + last_state.x);
          time_lapsed += 16;
          /* If the change threshold is reached, break. */
          if (!(Math.abs(last_state.x) > tolerance && Math.abs(last_state.v) > tolerance)) {
            break;
          }
        }

        /* If duration is not defined, return the actual time required for completing this animation. Otherwise, return a closure that holds the
           computed path and returns a snapshot of the position according to a given percentComplete. */
        return !have_duration ? time_lapsed : function (percentComplete) {
          return path[percentComplete * (path.length - 1) | 0];
        };
      };
    }();

    var cubicBezier = function cubicBezier(t1, p1, t2, p2) {
      var bezier = generateCubicBezier(t1, p1, t2, p2);
      return function (start, end, percent) {
        return start + (end - start) * bezier(percent);
      };
    };
    var easings = {
      'linear': function linear(start, end, percent) {
        return start + (end - start) * percent;
      },
      // default easings
      'ease': cubicBezier(0.25, 0.1, 0.25, 1),
      'ease-in': cubicBezier(0.42, 0, 1, 1),
      'ease-out': cubicBezier(0, 0, 0.58, 1),
      'ease-in-out': cubicBezier(0.42, 0, 0.58, 1),
      // sine
      'ease-in-sine': cubicBezier(0.47, 0, 0.745, 0.715),
      'ease-out-sine': cubicBezier(0.39, 0.575, 0.565, 1),
      'ease-in-out-sine': cubicBezier(0.445, 0.05, 0.55, 0.95),
      // quad
      'ease-in-quad': cubicBezier(0.55, 0.085, 0.68, 0.53),
      'ease-out-quad': cubicBezier(0.25, 0.46, 0.45, 0.94),
      'ease-in-out-quad': cubicBezier(0.455, 0.03, 0.515, 0.955),
      // cubic
      'ease-in-cubic': cubicBezier(0.55, 0.055, 0.675, 0.19),
      'ease-out-cubic': cubicBezier(0.215, 0.61, 0.355, 1),
      'ease-in-out-cubic': cubicBezier(0.645, 0.045, 0.355, 1),
      // quart
      'ease-in-quart': cubicBezier(0.895, 0.03, 0.685, 0.22),
      'ease-out-quart': cubicBezier(0.165, 0.84, 0.44, 1),
      'ease-in-out-quart': cubicBezier(0.77, 0, 0.175, 1),
      // quint
      'ease-in-quint': cubicBezier(0.755, 0.05, 0.855, 0.06),
      'ease-out-quint': cubicBezier(0.23, 1, 0.32, 1),
      'ease-in-out-quint': cubicBezier(0.86, 0, 0.07, 1),
      // expo
      'ease-in-expo': cubicBezier(0.95, 0.05, 0.795, 0.035),
      'ease-out-expo': cubicBezier(0.19, 1, 0.22, 1),
      'ease-in-out-expo': cubicBezier(1, 0, 0, 1),
      // circ
      'ease-in-circ': cubicBezier(0.6, 0.04, 0.98, 0.335),
      'ease-out-circ': cubicBezier(0.075, 0.82, 0.165, 1),
      'ease-in-out-circ': cubicBezier(0.785, 0.135, 0.15, 0.86),
      // user param easings...

      'spring': function spring(tension, friction, duration) {
        if (duration === 0) {
          // can't get a spring w/ duration 0
          return easings.linear; // duration 0 => jump to end so impl doesn't matter
        }

        var spring = generateSpringRK4(tension, friction, duration);
        return function (start, end, percent) {
          return start + (end - start) * spring(percent);
        };
      },
      'cubic-bezier': cubicBezier
    };

    function getEasedValue(type, start, end, percent, easingFn) {
      if (percent === 1) {
        return end;
      }
      if (start === end) {
        return end;
      }
      var val = easingFn(start, end, percent);
      if (type == null) {
        return val;
      }
      if (type.roundValue || type.color) {
        val = Math.round(val);
      }
      if (type.min !== undefined) {
        val = Math.max(val, type.min);
      }
      if (type.max !== undefined) {
        val = Math.min(val, type.max);
      }
      return val;
    }
    function getValue(prop, spec) {
      if (prop.pfValue != null || prop.value != null) {
        if (prop.pfValue != null && (spec == null || spec.type.units !== '%')) {
          return prop.pfValue;
        } else {
          return prop.value;
        }
      } else {
        return prop;
      }
    }
    function ease(startProp, endProp, percent, easingFn, propSpec) {
      var type = propSpec != null ? propSpec.type : null;
      if (percent < 0) {
        percent = 0;
      } else if (percent > 1) {
        percent = 1;
      }
      var start = getValue(startProp, propSpec);
      var end = getValue(endProp, propSpec);
      if (number$1(start) && number$1(end)) {
        return getEasedValue(type, start, end, percent, easingFn);
      } else if (array(start) && array(end)) {
        var easedArr = [];
        for (var i = 0; i < end.length; i++) {
          var si = start[i];
          var ei = end[i];
          if (si != null && ei != null) {
            var val = getEasedValue(type, si, ei, percent, easingFn);
            easedArr.push(val);
          } else {
            easedArr.push(ei);
          }
        }
        return easedArr;
      }
      return undefined;
    }

    function step$1(self, ani, now, isCore) {
      var isEles = !isCore;
      var _p = self._private;
      var ani_p = ani._private;
      var pEasing = ani_p.easing;
      var startTime = ani_p.startTime;
      var cy = isCore ? self : self.cy();
      var style = cy.style();
      if (!ani_p.easingImpl) {
        if (pEasing == null) {
          // use default
          ani_p.easingImpl = easings['linear'];
        } else {
          // then define w/ name
          var easingVals;
          if (string(pEasing)) {
            var easingProp = style.parse('transition-timing-function', pEasing);
            easingVals = easingProp.value;
          } else {
            // then assume preparsed array
            easingVals = pEasing;
          }
          var name, args;
          if (string(easingVals)) {
            name = easingVals;
            args = [];
          } else {
            name = easingVals[1];
            args = easingVals.slice(2).map(function (n) {
              return +n;
            });
          }
          if (args.length > 0) {
            // create with args
            if (name === 'spring') {
              args.push(ani_p.duration); // need duration to generate spring
            }

            ani_p.easingImpl = easings[name].apply(null, args);
          } else {
            // static impl by name
            ani_p.easingImpl = easings[name];
          }
        }
      }
      var easing = ani_p.easingImpl;
      var percent;
      if (ani_p.duration === 0) {
        percent = 1;
      } else {
        percent = (now - startTime) / ani_p.duration;
      }
      if (ani_p.applying) {
        percent = ani_p.progress;
      }
      if (percent < 0) {
        percent = 0;
      } else if (percent > 1) {
        percent = 1;
      }
      if (ani_p.delay == null) {
        // then update

        var startPos = ani_p.startPosition;
        var endPos = ani_p.position;
        if (endPos && isEles && !self.locked()) {
          var newPos = {};
          if (valid(startPos.x, endPos.x)) {
            newPos.x = ease(startPos.x, endPos.x, percent, easing);
          }
          if (valid(startPos.y, endPos.y)) {
            newPos.y = ease(startPos.y, endPos.y, percent, easing);
          }
          self.position(newPos);
        }
        var startPan = ani_p.startPan;
        var endPan = ani_p.pan;
        var pan = _p.pan;
        var animatingPan = endPan != null && isCore;
        if (animatingPan) {
          if (valid(startPan.x, endPan.x)) {
            pan.x = ease(startPan.x, endPan.x, percent, easing);
          }
          if (valid(startPan.y, endPan.y)) {
            pan.y = ease(startPan.y, endPan.y, percent, easing);
          }
          self.emit('pan');
        }
        var startZoom = ani_p.startZoom;
        var endZoom = ani_p.zoom;
        var animatingZoom = endZoom != null && isCore;
        if (animatingZoom) {
          if (valid(startZoom, endZoom)) {
            _p.zoom = bound(_p.minZoom, ease(startZoom, endZoom, percent, easing), _p.maxZoom);
          }
          self.emit('zoom');
        }
        if (animatingPan || animatingZoom) {
          self.emit('viewport');
        }
        var props = ani_p.style;
        if (props && props.length > 0 && isEles) {
          for (var i = 0; i < props.length; i++) {
            var prop = props[i];
            var _name = prop.name;
            var end = prop;
            var start = ani_p.startStyle[_name];
            var propSpec = style.properties[start.name];
            var easedVal = ease(start, end, percent, easing, propSpec);
            style.overrideBypass(self, _name, easedVal);
          } // for props

          self.emit('style');
        } // if
      }

      ani_p.progress = percent;
      return percent;
    }
    function valid(start, end) {
      if (start == null || end == null) {
        return false;
      }
      if (number$1(start) && number$1(end)) {
        return true;
      } else if (start && end) {
        return true;
      }
      return false;
    }

    function startAnimation(self, ani, now, isCore) {
      var ani_p = ani._private;
      ani_p.started = true;
      ani_p.startTime = now - ani_p.progress * ani_p.duration;
    }

    function stepAll(now, cy) {
      var eles = cy._private.aniEles;
      var doneEles = [];
      function stepOne(ele, isCore) {
        var _p = ele._private;
        var current = _p.animation.current;
        var queue = _p.animation.queue;
        var ranAnis = false;

        // if nothing currently animating, get something from the queue
        if (current.length === 0) {
          var next = queue.shift();
          if (next) {
            current.push(next);
          }
        }
        var callbacks = function callbacks(_callbacks) {
          for (var j = _callbacks.length - 1; j >= 0; j--) {
            var cb = _callbacks[j];
            cb();
          }
          _callbacks.splice(0, _callbacks.length);
        };

        // step and remove if done
        for (var i = current.length - 1; i >= 0; i--) {
          var ani = current[i];
          var ani_p = ani._private;
          if (ani_p.stopped) {
            current.splice(i, 1);
            ani_p.hooked = false;
            ani_p.playing = false;
            ani_p.started = false;
            callbacks(ani_p.frames);
            continue;
          }
          if (!ani_p.playing && !ani_p.applying) {
            continue;
          }

          // an apply() while playing shouldn't do anything
          if (ani_p.playing && ani_p.applying) {
            ani_p.applying = false;
          }
          if (!ani_p.started) {
            startAnimation(ele, ani, now);
          }
          step$1(ele, ani, now, isCore);
          if (ani_p.applying) {
            ani_p.applying = false;
          }
          callbacks(ani_p.frames);
          if (ani_p.step != null) {
            ani_p.step(now);
          }
          if (ani.completed()) {
            current.splice(i, 1);
            ani_p.hooked = false;
            ani_p.playing = false;
            ani_p.started = false;
            callbacks(ani_p.completes);
          }
          ranAnis = true;
        }
        if (!isCore && current.length === 0 && queue.length === 0) {
          doneEles.push(ele);
        }
        return ranAnis;
      } // stepElement

      // handle all eles
      var ranEleAni = false;
      for (var e = 0; e < eles.length; e++) {
        var ele = eles[e];
        var handledThisEle = stepOne(ele);
        ranEleAni = ranEleAni || handledThisEle;
      } // each element

      var ranCoreAni = stepOne(cy, true);

      // notify renderer
      if (ranEleAni || ranCoreAni) {
        if (eles.length > 0) {
          cy.notify('draw', eles);
        } else {
          cy.notify('draw');
        }
      }

      // remove elements from list of currently animating if its queues are empty
      eles.unmerge(doneEles);
      cy.emit('step');
    } // stepAll

    var corefn$8 = {
      // pull in animation functions
      animate: define.animate(),
      animation: define.animation(),
      animated: define.animated(),
      clearQueue: define.clearQueue(),
      delay: define.delay(),
      delayAnimation: define.delayAnimation(),
      stop: define.stop(),
      addToAnimationPool: function addToAnimationPool(eles) {
        var cy = this;
        if (!cy.styleEnabled()) {
          return;
        } // save cycles when no style used

        cy._private.aniEles.merge(eles);
      },
      stopAnimationLoop: function stopAnimationLoop() {
        this._private.animationsRunning = false;
      },
      startAnimationLoop: function startAnimationLoop() {
        var cy = this;
        cy._private.animationsRunning = true;
        if (!cy.styleEnabled()) {
          return;
        } // save cycles when no style used

        // NB the animation loop will exec in headless environments if style enabled
        // and explicit cy.destroy() is necessary to stop the loop

        function headlessStep() {
          if (!cy._private.animationsRunning) {
            return;
          }
          requestAnimationFrame$1(function animationStep(now) {
            stepAll(now, cy);
            headlessStep();
          });
        }
        var renderer = cy.renderer();
        if (renderer && renderer.beforeRender) {
          // let the renderer schedule animations
          renderer.beforeRender(function rendererAnimationStep(willDraw, now) {
            stepAll(now, cy);
          }, renderer.beforeRenderPriorities.animations);
        } else {
          // manage the animation loop ourselves
          headlessStep(); // first call
        }
      }
    };

    var emitterOptions = {
      qualifierCompare: function qualifierCompare(selector1, selector2) {
        if (selector1 == null || selector2 == null) {
          return selector1 == null && selector2 == null;
        } else {
          return selector1.sameText(selector2);
        }
      },
      eventMatches: function eventMatches(cy, listener, eventObj) {
        var selector = listener.qualifier;
        if (selector != null) {
          return cy !== eventObj.target && element(eventObj.target) && selector.matches(eventObj.target);
        }
        return true;
      },
      addEventFields: function addEventFields(cy, evt) {
        evt.cy = cy;
        evt.target = cy;
      },
      callbackContext: function callbackContext(cy, listener, eventObj) {
        return listener.qualifier != null ? eventObj.target : cy;
      }
    };
    var argSelector = function argSelector(arg) {
      if (string(arg)) {
        return new Selector(arg);
      } else {
        return arg;
      }
    };
    var elesfn = {
      createEmitter: function createEmitter() {
        var _p = this._private;
        if (!_p.emitter) {
          _p.emitter = new Emitter(emitterOptions, this);
        }
        return this;
      },
      emitter: function emitter() {
        return this._private.emitter;
      },
      on: function on(events, selector, callback) {
        this.emitter().on(events, argSelector(selector), callback);
        return this;
      },
      removeListener: function removeListener(events, selector, callback) {
        this.emitter().removeListener(events, argSelector(selector), callback);
        return this;
      },
      removeAllListeners: function removeAllListeners() {
        this.emitter().removeAllListeners();
        return this;
      },
      one: function one(events, selector, callback) {
        this.emitter().one(events, argSelector(selector), callback);
        return this;
      },
      once: function once(events, selector, callback) {
        this.emitter().one(events, argSelector(selector), callback);
        return this;
      },
      emit: function emit(events, extraParams) {
        this.emitter().emit(events, extraParams);
        return this;
      },
      emitAndNotify: function emitAndNotify(event, eles) {
        this.emit(event);
        this.notify(event, eles);
        return this;
      }
    };
    define.eventAliasesOn(elesfn);

    var corefn$7 = {
      png: function png(options) {
        var renderer = this._private.renderer;
        options = options || {};
        return renderer.png(options);
      },
      jpg: function jpg(options) {
        var renderer = this._private.renderer;
        options = options || {};
        options.bg = options.bg || '#fff';
        return renderer.jpg(options);
      }
    };
    corefn$7.jpeg = corefn$7.jpg;

    var corefn$6 = {
      layout: function layout(options) {
        var cy = this;
        if (options == null) {
          error('Layout options must be specified to make a layout');
          return;
        }
        if (options.name == null) {
          error('A `name` must be specified to make a layout');
          return;
        }
        var name = options.name;
        var Layout = cy.extension('layout', name);
        if (Layout == null) {
          error('No such layout `' + name + '` found.  Did you forget to import it and `cytoscape.use()` it?');
          return;
        }
        var eles;
        if (string(options.eles)) {
          eles = cy.$(options.eles);
        } else {
          eles = options.eles != null ? options.eles : cy.$();
        }
        var layout = new Layout(extend$1({}, options, {
          cy: cy,
          eles: eles
        }));
        return layout;
      }
    };
    corefn$6.createLayout = corefn$6.makeLayout = corefn$6.layout;

    var corefn$5 = {
      notify: function notify(eventName, eventEles) {
        var _p = this._private;
        if (this.batching()) {
          _p.batchNotifications = _p.batchNotifications || {};
          var eles = _p.batchNotifications[eventName] = _p.batchNotifications[eventName] || this.collection();
          if (eventEles != null) {
            eles.merge(eventEles);
          }
          return; // notifications are disabled during batching
        }

        if (!_p.notificationsEnabled) {
          return;
        } // exit on disabled

        var renderer = this.renderer();

        // exit if destroy() called on core or renderer in between frames #1499 #1528
        if (this.destroyed() || !renderer) {
          return;
        }
        renderer.notify(eventName, eventEles);
      },
      notifications: function notifications(bool) {
        var p = this._private;
        if (bool === undefined) {
          return p.notificationsEnabled;
        } else {
          p.notificationsEnabled = bool ? true : false;
        }
        return this;
      },
      noNotifications: function noNotifications(callback) {
        this.notifications(false);
        callback();
        this.notifications(true);
      },
      batching: function batching() {
        return this._private.batchCount > 0;
      },
      startBatch: function startBatch() {
        var _p = this._private;
        if (_p.batchCount == null) {
          _p.batchCount = 0;
        }
        if (_p.batchCount === 0) {
          _p.batchStyleEles = this.collection();
          _p.batchNotifications = {};
        }
        _p.batchCount++;
        return this;
      },
      endBatch: function endBatch() {
        var _p = this._private;
        if (_p.batchCount === 0) {
          return this;
        }
        _p.batchCount--;
        if (_p.batchCount === 0) {
          // update style for dirty eles
          _p.batchStyleEles.updateStyle();
          var renderer = this.renderer();

          // notify the renderer of queued eles and event types
          Object.keys(_p.batchNotifications).forEach(function (eventName) {
            var eles = _p.batchNotifications[eventName];
            if (eles.empty()) {
              renderer.notify(eventName);
            } else {
              renderer.notify(eventName, eles);
            }
          });
        }
        return this;
      },
      batch: function batch(callback) {
        this.startBatch();
        callback();
        this.endBatch();
        return this;
      },
      // for backwards compatibility
      batchData: function batchData(map) {
        var cy = this;
        return this.batch(function () {
          var ids = Object.keys(map);
          for (var i = 0; i < ids.length; i++) {
            var id = ids[i];
            var data = map[id];
            var ele = cy.getElementById(id);
            ele.data(data);
          }
        });
      }
    };

    var rendererDefaults = defaults$g({
      hideEdgesOnViewport: false,
      textureOnViewport: false,
      motionBlur: false,
      motionBlurOpacity: 0.05,
      pixelRatio: undefined,
      desktopTapThreshold: 4,
      touchTapThreshold: 8,
      wheelSensitivity: 1,
      debug: false,
      showFps: false
    });
    var corefn$4 = {
      renderTo: function renderTo(context, zoom, pan, pxRatio) {
        var r = this._private.renderer;
        r.renderTo(context, zoom, pan, pxRatio);
        return this;
      },
      renderer: function renderer() {
        return this._private.renderer;
      },
      forceRender: function forceRender() {
        this.notify('draw');
        return this;
      },
      resize: function resize() {
        this.invalidateSize();
        this.emitAndNotify('resize');
        return this;
      },
      initRenderer: function initRenderer(options) {
        var cy = this;
        var RendererProto = cy.extension('renderer', options.name);
        if (RendererProto == null) {
          error("Can not initialise: No such renderer `".concat(options.name, "` found. Did you forget to import it and `cytoscape.use()` it?"));
          return;
        }
        if (options.wheelSensitivity !== undefined) {
          warn("You have set a custom wheel sensitivity.  This will make your app zoom unnaturally when using mainstream mice.  You should change this value from the default only if you can guarantee that all your users will use the same hardware and OS configuration as your current machine.");
        }
        var rOpts = rendererDefaults(options);
        rOpts.cy = cy;
        cy._private.renderer = new RendererProto(rOpts);
        this.notify('init');
      },
      destroyRenderer: function destroyRenderer() {
        var cy = this;
        cy.notify('destroy'); // destroy the renderer

        var domEle = cy.container();
        if (domEle) {
          domEle._cyreg = null;
          while (domEle.childNodes.length > 0) {
            domEle.removeChild(domEle.childNodes[0]);
          }
        }
        cy._private.renderer = null; // to be extra safe, remove the ref
        cy.mutableElements().forEach(function (ele) {
          var _p = ele._private;
          _p.rscratch = {};
          _p.rstyle = {};
          _p.animation.current = [];
          _p.animation.queue = [];
        });
      },
      onRender: function onRender(fn) {
        return this.on('render', fn);
      },
      offRender: function offRender(fn) {
        return this.off('render', fn);
      }
    };
    corefn$4.invalidateDimensions = corefn$4.resize;

    var corefn$3 = {
      // get a collection
      // - empty collection on no args
      // - collection of elements in the graph on selector arg
      // - guarantee a returned collection when elements or collection specified
      collection: function collection(eles, opts) {
        if (string(eles)) {
          return this.$(eles);
        } else if (elementOrCollection(eles)) {
          return eles.collection();
        } else if (array(eles)) {
          if (!opts) {
            opts = {};
          }
          return new Collection(this, eles, opts.unique, opts.removed);
        }
        return new Collection(this);
      },
      nodes: function nodes(selector) {
        var nodes = this.$(function (ele) {
          return ele.isNode();
        });
        if (selector) {
          return nodes.filter(selector);
        }
        return nodes;
      },
      edges: function edges(selector) {
        var edges = this.$(function (ele) {
          return ele.isEdge();
        });
        if (selector) {
          return edges.filter(selector);
        }
        return edges;
      },
      // search the graph like jQuery
      $: function $(selector) {
        var eles = this._private.elements;
        if (selector) {
          return eles.filter(selector);
        } else {
          return eles.spawnSelf();
        }
      },
      mutableElements: function mutableElements() {
        return this._private.elements;
      }
    };

    // aliases
    corefn$3.elements = corefn$3.filter = corefn$3.$;

    var styfn$8 = {};

    // keys for style blocks, e.g. ttfftt
    var TRUE = 't';
    var FALSE = 'f';

    // (potentially expensive calculation)
    // apply the style to the element based on
    // - its bypass
    // - what selectors match it
    styfn$8.apply = function (eles) {
      var self = this;
      var _p = self._private;
      var cy = _p.cy;
      var updatedEles = cy.collection();
      for (var ie = 0; ie < eles.length; ie++) {
        var ele = eles[ie];
        var cxtMeta = self.getContextMeta(ele);
        if (cxtMeta.empty) {
          continue;
        }
        var cxtStyle = self.getContextStyle(cxtMeta);
        var app = self.applyContextStyle(cxtMeta, cxtStyle, ele);
        if (ele._private.appliedInitStyle) {
          self.updateTransitions(ele, app.diffProps);
        } else {
          ele._private.appliedInitStyle = true;
        }
        var hintsDiff = self.updateStyleHints(ele);
        if (hintsDiff) {
          updatedEles.push(ele);
        }
      } // for elements

      return updatedEles;
    };
    styfn$8.getPropertiesDiff = function (oldCxtKey, newCxtKey) {
      var self = this;
      var cache = self._private.propDiffs = self._private.propDiffs || {};
      var dualCxtKey = oldCxtKey + '-' + newCxtKey;
      var cachedVal = cache[dualCxtKey];
      if (cachedVal) {
        return cachedVal;
      }
      var diffProps = [];
      var addedProp = {};
      for (var i = 0; i < self.length; i++) {
        var cxt = self[i];
        var oldHasCxt = oldCxtKey[i] === TRUE;
        var newHasCxt = newCxtKey[i] === TRUE;
        var cxtHasDiffed = oldHasCxt !== newHasCxt;
        var cxtHasMappedProps = cxt.mappedProperties.length > 0;
        if (cxtHasDiffed || newHasCxt && cxtHasMappedProps) {
          var props = void 0;
          if (cxtHasDiffed && cxtHasMappedProps) {
            props = cxt.properties; // suffices b/c mappedProperties is a subset of properties
          } else if (cxtHasDiffed) {
            props = cxt.properties; // need to check them all
          } else if (cxtHasMappedProps) {
            props = cxt.mappedProperties; // only need to check mapped
          }

          for (var j = 0; j < props.length; j++) {
            var prop = props[j];
            var name = prop.name;

            // if a later context overrides this property, then the fact that this context has switched/diffed doesn't matter
            // (semi expensive check since it makes this function O(n^2) on context length, but worth it since overall result
            // is cached)
            var laterCxtOverrides = false;
            for (var k = i + 1; k < self.length; k++) {
              var laterCxt = self[k];
              var hasLaterCxt = newCxtKey[k] === TRUE;
              if (!hasLaterCxt) {
                continue;
              } // can't override unless the context is active

              laterCxtOverrides = laterCxt.properties[prop.name] != null;
              if (laterCxtOverrides) {
                break;
              } // exit early as long as one later context overrides
            }

            if (!addedProp[name] && !laterCxtOverrides) {
              addedProp[name] = true;
              diffProps.push(name);
            }
          } // for props
        } // if
      } // for contexts

      cache[dualCxtKey] = diffProps;
      return diffProps;
    };
    styfn$8.getContextMeta = function (ele) {
      var self = this;
      var cxtKey = '';
      var diffProps;
      var prevKey = ele._private.styleCxtKey || '';

      // get the cxt key
      for (var i = 0; i < self.length; i++) {
        var context = self[i];
        var contextSelectorMatches = context.selector && context.selector.matches(ele); // NB: context.selector may be null for 'core'

        if (contextSelectorMatches) {
          cxtKey += TRUE;
        } else {
          cxtKey += FALSE;
        }
      } // for context

      diffProps = self.getPropertiesDiff(prevKey, cxtKey);
      ele._private.styleCxtKey = cxtKey;
      return {
        key: cxtKey,
        diffPropNames: diffProps,
        empty: diffProps.length === 0
      };
    };

    // gets a computed ele style object based on matched contexts
    styfn$8.getContextStyle = function (cxtMeta) {
      var cxtKey = cxtMeta.key;
      var self = this;
      var cxtStyles = this._private.contextStyles = this._private.contextStyles || {};

      // if already computed style, returned cached copy
      if (cxtStyles[cxtKey]) {
        return cxtStyles[cxtKey];
      }
      var style = {
        _private: {
          key: cxtKey
        }
      };
      for (var i = 0; i < self.length; i++) {
        var cxt = self[i];
        var hasCxt = cxtKey[i] === TRUE;
        if (!hasCxt) {
          continue;
        }
        for (var j = 0; j < cxt.properties.length; j++) {
          var prop = cxt.properties[j];
          style[prop.name] = prop;
        }
      }
      cxtStyles[cxtKey] = style;
      return style;
    };
    styfn$8.applyContextStyle = function (cxtMeta, cxtStyle, ele) {
      var self = this;
      var diffProps = cxtMeta.diffPropNames;
      var retDiffProps = {};
      var types = self.types;
      for (var i = 0; i < diffProps.length; i++) {
        var diffPropName = diffProps[i];
        var cxtProp = cxtStyle[diffPropName];
        var eleProp = ele.pstyle(diffPropName);
        if (!cxtProp) {
          // no context prop means delete
          if (!eleProp) {
            continue; // no existing prop means nothing needs to be removed
            // nb affects initial application on mapped values like control-point-distances
          } else if (eleProp.bypass) {
            cxtProp = {
              name: diffPropName,
              deleteBypassed: true
            };
          } else {
            cxtProp = {
              name: diffPropName,
              "delete": true
            };
          }
        }

        // save cycles when the context prop doesn't need to be applied
        if (eleProp === cxtProp) {
          continue;
        }

        // save cycles when a mapped context prop doesn't need to be applied
        if (cxtProp.mapped === types.fn // context prop is function mapper
        && eleProp != null // some props can be null even by default (e.g. a prop that overrides another one)
        && eleProp.mapping != null // ele prop is a concrete value from from a mapper
        && eleProp.mapping.value === cxtProp.value // the current prop on the ele is a flat prop value for the function mapper
        ) {
          // NB don't write to cxtProp, as it's shared among eles (stored in stylesheet)
          var mapping = eleProp.mapping; // can write to mapping, as it's a per-ele copy
          var fnValue = mapping.fnValue = cxtProp.value(ele); // temporarily cache the value in case of a miss

          if (fnValue === mapping.prevFnValue) {
            continue;
          }
        }
        var retDiffProp = retDiffProps[diffPropName] = {
          prev: eleProp
        };
        self.applyParsedProperty(ele, cxtProp);
        retDiffProp.next = ele.pstyle(diffPropName);
        if (retDiffProp.next && retDiffProp.next.bypass) {
          retDiffProp.next = retDiffProp.next.bypassed;
        }
      }
      return {
        diffProps: retDiffProps
      };
    };
    styfn$8.updateStyleHints = function (ele) {
      var _p = ele._private;
      var self = this;
      var propNames = self.propertyGroupNames;
      var propGrKeys = self.propertyGroupKeys;
      var propHash = function propHash(ele, propNames, seedKey) {
        return self.getPropertiesHash(ele, propNames, seedKey);
      };
      var oldStyleKey = _p.styleKey;
      if (ele.removed()) {
        return false;
      }
      var isNode = _p.group === 'nodes';

      // get the style key hashes per prop group
      // but lazily -- only use non-default prop values to reduce the number of hashes
      //

      var overriddenStyles = ele._private.style;
      propNames = Object.keys(overriddenStyles);
      for (var i = 0; i < propGrKeys.length; i++) {
        var grKey = propGrKeys[i];
        _p.styleKeys[grKey] = [DEFAULT_HASH_SEED, DEFAULT_HASH_SEED_ALT];
      }
      var updateGrKey1 = function updateGrKey1(val, grKey) {
        return _p.styleKeys[grKey][0] = hashInt(val, _p.styleKeys[grKey][0]);
      };
      var updateGrKey2 = function updateGrKey2(val, grKey) {
        return _p.styleKeys[grKey][1] = hashIntAlt(val, _p.styleKeys[grKey][1]);
      };
      var updateGrKey = function updateGrKey(val, grKey) {
        updateGrKey1(val, grKey);
        updateGrKey2(val, grKey);
      };
      var updateGrKeyWStr = function updateGrKeyWStr(strVal, grKey) {
        for (var j = 0; j < strVal.length; j++) {
          var ch = strVal.charCodeAt(j);
          updateGrKey1(ch, grKey);
          updateGrKey2(ch, grKey);
        }
      };

      // - hashing works on 32 bit ints b/c we use bitwise ops
      // - small numbers get cut off (e.g. 0.123 is seen as 0 by the hashing function)
      // - raise up small numbers so more significant digits are seen by hashing
      // - make small numbers larger than a normal value to avoid collisions
      // - works in practice and it's relatively cheap
      var N = 2000000000;
      var cleanNum = function cleanNum(val) {
        return -128 < val && val < 128 && Math.floor(val) !== val ? N - (val * 1024 | 0) : val;
      };
      for (var _i = 0; _i < propNames.length; _i++) {
        var name = propNames[_i];
        var parsedProp = overriddenStyles[name];
        if (parsedProp == null) {
          continue;
        }
        var propInfo = this.properties[name];
        var type = propInfo.type;
        var _grKey = propInfo.groupKey;
        var normalizedNumberVal = void 0;
        if (propInfo.hashOverride != null) {
          normalizedNumberVal = propInfo.hashOverride(ele, parsedProp);
        } else if (parsedProp.pfValue != null) {
          normalizedNumberVal = parsedProp.pfValue;
        }

        // might not be a number if it allows enums
        var numberVal = propInfo.enums == null ? parsedProp.value : null;
        var haveNormNum = normalizedNumberVal != null;
        var haveUnitedNum = numberVal != null;
        var haveNum = haveNormNum || haveUnitedNum;
        var units = parsedProp.units;

        // numbers are cheaper to hash than strings
        // 1 hash op vs n hash ops (for length n string)
        if (type.number && haveNum && !type.multiple) {
          var v = haveNormNum ? normalizedNumberVal : numberVal;
          updateGrKey(cleanNum(v), _grKey);
          if (!haveNormNum && units != null) {
            updateGrKeyWStr(units, _grKey);
          }
        } else {
          updateGrKeyWStr(parsedProp.strValue, _grKey);
        }
      }

      // overall style key
      //

      var hash = [DEFAULT_HASH_SEED, DEFAULT_HASH_SEED_ALT];
      for (var _i2 = 0; _i2 < propGrKeys.length; _i2++) {
        var _grKey2 = propGrKeys[_i2];
        var grHash = _p.styleKeys[_grKey2];
        hash[0] = hashInt(grHash[0], hash[0]);
        hash[1] = hashIntAlt(grHash[1], hash[1]);
      }
      _p.styleKey = combineHashes(hash[0], hash[1]);

      // label dims
      //

      var sk = _p.styleKeys;
      _p.labelDimsKey = combineHashesArray(sk.labelDimensions);
      var labelKeys = propHash(ele, ['label'], sk.labelDimensions);
      _p.labelKey = combineHashesArray(labelKeys);
      _p.labelStyleKey = combineHashesArray(hashArrays(sk.commonLabel, labelKeys));
      if (!isNode) {
        var sourceLabelKeys = propHash(ele, ['source-label'], sk.labelDimensions);
        _p.sourceLabelKey = combineHashesArray(sourceLabelKeys);
        _p.sourceLabelStyleKey = combineHashesArray(hashArrays(sk.commonLabel, sourceLabelKeys));
        var targetLabelKeys = propHash(ele, ['target-label'], sk.labelDimensions);
        _p.targetLabelKey = combineHashesArray(targetLabelKeys);
        _p.targetLabelStyleKey = combineHashesArray(hashArrays(sk.commonLabel, targetLabelKeys));
      }

      // node
      //

      if (isNode) {
        var _p$styleKeys = _p.styleKeys,
          nodeBody = _p$styleKeys.nodeBody,
          nodeBorder = _p$styleKeys.nodeBorder,
          nodeOutline = _p$styleKeys.nodeOutline,
          backgroundImage = _p$styleKeys.backgroundImage,
          compound = _p$styleKeys.compound,
          pie = _p$styleKeys.pie;
        var nodeKeys = [nodeBody, nodeBorder, nodeOutline, backgroundImage, compound, pie].filter(function (k) {
          return k != null;
        }).reduce(hashArrays, [DEFAULT_HASH_SEED, DEFAULT_HASH_SEED_ALT]);
        _p.nodeKey = combineHashesArray(nodeKeys);
        _p.hasPie = pie != null && pie[0] !== DEFAULT_HASH_SEED && pie[1] !== DEFAULT_HASH_SEED_ALT;
      }
      return oldStyleKey !== _p.styleKey;
    };
    styfn$8.clearStyleHints = function (ele) {
      var _p = ele._private;
      _p.styleCxtKey = '';
      _p.styleKeys = {};
      _p.styleKey = null;
      _p.labelKey = null;
      _p.labelStyleKey = null;
      _p.sourceLabelKey = null;
      _p.sourceLabelStyleKey = null;
      _p.targetLabelKey = null;
      _p.targetLabelStyleKey = null;
      _p.nodeKey = null;
      _p.hasPie = null;
    };

    // apply a property to the style (for internal use)
    // returns whether application was successful
    //
    // now, this function flattens the property, and here's how:
    //
    // for parsedProp:{ bypass: true, deleteBypass: true }
    // no property is generated, instead the bypass property in the
    // element's style is replaced by what's pointed to by the `bypassed`
    // field in the bypass property (i.e. restoring the property the
    // bypass was overriding)
    //
    // for parsedProp:{ mapped: truthy }
    // the generated flattenedProp:{ mapping: prop }
    //
    // for parsedProp:{ bypass: true }
    // the generated flattenedProp:{ bypassed: parsedProp }
    styfn$8.applyParsedProperty = function (ele, parsedProp) {
      var self = this;
      var prop = parsedProp;
      var style = ele._private.style;
      var flatProp;
      var types = self.types;
      var type = self.properties[prop.name].type;
      var propIsBypass = prop.bypass;
      var origProp = style[prop.name];
      var origPropIsBypass = origProp && origProp.bypass;
      var _p = ele._private;
      var flatPropMapping = 'mapping';
      var getVal = function getVal(p) {
        if (p == null) {
          return null;
        } else if (p.pfValue != null) {
          return p.pfValue;
        } else {
          return p.value;
        }
      };
      var checkTriggers = function checkTriggers() {
        var fromVal = getVal(origProp);
        var toVal = getVal(prop);
        self.checkTriggers(ele, prop.name, fromVal, toVal);
      };

      // edge sanity checks to prevent the client from making serious mistakes
      if (parsedProp.name === 'curve-style' && ele.isEdge() && (
      // loops must be bundled beziers
      parsedProp.value !== 'bezier' && ele.isLoop() ||
      // edges connected to compound nodes can not be haystacks
      parsedProp.value === 'haystack' && (ele.source().isParent() || ele.target().isParent()))) {
        prop = parsedProp = this.parse(parsedProp.name, 'bezier', propIsBypass);
      }
      if (prop["delete"]) {
        // delete the property and use the default value on falsey value
        style[prop.name] = undefined;
        checkTriggers();
        return true;
      }
      if (prop.deleteBypassed) {
        // delete the property that the
        if (!origProp) {
          checkTriggers();
          return true; // can't delete if no prop
        } else if (origProp.bypass) {
          // delete bypassed
          origProp.bypassed = undefined;
          checkTriggers();
          return true;
        } else {
          return false; // we're unsuccessful deleting the bypassed
        }
      }

      // check if we need to delete the current bypass
      if (prop.deleteBypass) {
        // then this property is just here to indicate we need to delete
        if (!origProp) {
          checkTriggers();
          return true; // property is already not defined
        } else if (origProp.bypass) {
          // then replace the bypass property with the original
          // because the bypassed property was already applied (and therefore parsed), we can just replace it (no reapplying necessary)
          style[prop.name] = origProp.bypassed;
          checkTriggers();
          return true;
        } else {
          return false; // we're unsuccessful deleting the bypass
        }
      }

      var printMappingErr = function printMappingErr() {
        warn('Do not assign mappings to elements without corresponding data (i.e. ele `' + ele.id() + '` has no mapping for property `' + prop.name + '` with data field `' + prop.field + '`); try a `[' + prop.field + ']` selector to limit scope to elements with `' + prop.field + '` defined');
      };

      // put the property in the style objects
      switch (prop.mapped) {
        // flatten the property if mapped
        case types.mapData:
          {
            // flatten the field (e.g. data.foo.bar)
            var fields = prop.field.split('.');
            var fieldVal = _p.data;
            for (var i = 0; i < fields.length && fieldVal; i++) {
              var field = fields[i];
              fieldVal = fieldVal[field];
            }
            if (fieldVal == null) {
              printMappingErr();
              return false;
            }
            var percent;
            if (!number$1(fieldVal)) {
              // then don't apply and fall back on the existing style
              warn('Do not use continuous mappers without specifying numeric data (i.e. `' + prop.field + ': ' + fieldVal + '` for `' + ele.id() + '` is non-numeric)');
              return false;
            } else {
              var fieldWidth = prop.fieldMax - prop.fieldMin;
              if (fieldWidth === 0) {
                // safety check -- not strictly necessary as no props of zero range should be passed here
                percent = 0;
              } else {
                percent = (fieldVal - prop.fieldMin) / fieldWidth;
              }
            }

            // make sure to bound percent value
            if (percent < 0) {
              percent = 0;
            } else if (percent > 1) {
              percent = 1;
            }
            if (type.color) {
              var r1 = prop.valueMin[0];
              var r2 = prop.valueMax[0];
              var g1 = prop.valueMin[1];
              var g2 = prop.valueMax[1];
              var b1 = prop.valueMin[2];
              var b2 = prop.valueMax[2];
              var a1 = prop.valueMin[3] == null ? 1 : prop.valueMin[3];
              var a2 = prop.valueMax[3] == null ? 1 : prop.valueMax[3];
              var clr = [Math.round(r1 + (r2 - r1) * percent), Math.round(g1 + (g2 - g1) * percent), Math.round(b1 + (b2 - b1) * percent), Math.round(a1 + (a2 - a1) * percent)];
              flatProp = {
                // colours are simple, so just create the flat property instead of expensive string parsing
                bypass: prop.bypass,
                // we're a bypass if the mapping property is a bypass
                name: prop.name,
                value: clr,
                strValue: 'rgb(' + clr[0] + ', ' + clr[1] + ', ' + clr[2] + ')'
              };
            } else if (type.number) {
              var calcValue = prop.valueMin + (prop.valueMax - prop.valueMin) * percent;
              flatProp = this.parse(prop.name, calcValue, prop.bypass, flatPropMapping);
            } else {
              return false; // can only map to colours and numbers
            }

            if (!flatProp) {
              // if we can't flatten the property, then don't apply the property and fall back on the existing style
              printMappingErr();
              return false;
            }
            flatProp.mapping = prop; // keep a reference to the mapping
            prop = flatProp; // the flattened (mapped) property is the one we want

            break;
          }

        // direct mapping
        case types.data:
          {
            // flatten the field (e.g. data.foo.bar)
            var _fields = prop.field.split('.');
            var _fieldVal = _p.data;
            for (var _i3 = 0; _i3 < _fields.length && _fieldVal; _i3++) {
              var _field = _fields[_i3];
              _fieldVal = _fieldVal[_field];
            }
            if (_fieldVal != null) {
              flatProp = this.parse(prop.name, _fieldVal, prop.bypass, flatPropMapping);
            }
            if (!flatProp) {
              // if we can't flatten the property, then don't apply and fall back on the existing style
              printMappingErr();
              return false;
            }
            flatProp.mapping = prop; // keep a reference to the mapping
            prop = flatProp; // the flattened (mapped) property is the one we want

            break;
          }
        case types.fn:
          {
            var fn = prop.value;
            var fnRetVal = prop.fnValue != null ? prop.fnValue : fn(ele); // check for cached value before calling function

            prop.prevFnValue = fnRetVal;
            if (fnRetVal == null) {
              warn('Custom function mappers may not return null (i.e. `' + prop.name + '` for ele `' + ele.id() + '` is null)');
              return false;
            }
            flatProp = this.parse(prop.name, fnRetVal, prop.bypass, flatPropMapping);
            if (!flatProp) {
              warn('Custom function mappers may not return invalid values for the property type (i.e. `' + prop.name + '` for ele `' + ele.id() + '` is invalid)');
              return false;
            }
            flatProp.mapping = copy(prop); // keep a reference to the mapping
            prop = flatProp; // the flattened (mapped) property is the one we want

            break;
          }
        case undefined:
          break;
        // just set the property

        default:
          return false;
        // not a valid mapping
      }

      // if the property is a bypass property, then link the resultant property to the original one
      if (propIsBypass) {
        if (origPropIsBypass) {
          // then this bypass overrides the existing one
          prop.bypassed = origProp.bypassed; // steal bypassed prop from old bypass
        } else {
          // then link the orig prop to the new bypass
          prop.bypassed = origProp;
        }
        style[prop.name] = prop; // and set
      } else {
        // prop is not bypass
        if (origPropIsBypass) {
          // then keep the orig prop (since it's a bypass) and link to the new prop
          origProp.bypassed = prop;
        } else {
          // then just replace the old prop with the new one
          style[prop.name] = prop;
        }
      }
      checkTriggers();
      return true;
    };
    styfn$8.cleanElements = function (eles, keepBypasses) {
      for (var i = 0; i < eles.length; i++) {
        var ele = eles[i];
        this.clearStyleHints(ele);
        ele.dirtyCompoundBoundsCache();
        ele.dirtyBoundingBoxCache();
        if (!keepBypasses) {
          ele._private.style = {};
        } else {
          var style = ele._private.style;
          var propNames = Object.keys(style);
          for (var j = 0; j < propNames.length; j++) {
            var propName = propNames[j];
            var eleProp = style[propName];
            if (eleProp != null) {
              if (eleProp.bypass) {
                eleProp.bypassed = null;
              } else {
                style[propName] = null;
              }
            }
          }
        }
      }
    };

    // updates the visual style for all elements (useful for manual style modification after init)
    styfn$8.update = function () {
      var cy = this._private.cy;
      var eles = cy.mutableElements();
      eles.updateStyle();
    };

    // diffProps : { name => { prev, next } }
    styfn$8.updateTransitions = function (ele, diffProps) {
      var self = this;
      var _p = ele._private;
      var props = ele.pstyle('transition-property').value;
      var duration = ele.pstyle('transition-duration').pfValue;
      var delay = ele.pstyle('transition-delay').pfValue;
      if (props.length > 0 && duration > 0) {
        var style = {};

        // build up the style to animate towards
        var anyPrev = false;
        for (var i = 0; i < props.length; i++) {
          var prop = props[i];
          var styProp = ele.pstyle(prop);
          var diffProp = diffProps[prop];
          if (!diffProp) {
            continue;
          }
          var prevProp = diffProp.prev;
          var fromProp = prevProp;
          var toProp = diffProp.next != null ? diffProp.next : styProp;
          var diff = false;
          var initVal = void 0;
          var initDt = 0.000001; // delta time % value for initVal (allows animating out of init zero opacity)

          if (!fromProp) {
            continue;
          }

          // consider px values
          if (number$1(fromProp.pfValue) && number$1(toProp.pfValue)) {
            diff = toProp.pfValue - fromProp.pfValue; // nonzero is truthy
            initVal = fromProp.pfValue + initDt * diff;

            // consider numerical values
          } else if (number$1(fromProp.value) && number$1(toProp.value)) {
            diff = toProp.value - fromProp.value; // nonzero is truthy
            initVal = fromProp.value + initDt * diff;

            // consider colour values
          } else if (array(fromProp.value) && array(toProp.value)) {
            diff = fromProp.value[0] !== toProp.value[0] || fromProp.value[1] !== toProp.value[1] || fromProp.value[2] !== toProp.value[2];
            initVal = fromProp.strValue;
          }

          // the previous value is good for an animation only if it's different
          if (diff) {
            style[prop] = toProp.strValue; // to val
            this.applyBypass(ele, prop, initVal); // from val
            anyPrev = true;
          }
        } // end if props allow ani

        // can't transition if there's nothing previous to transition from
        if (!anyPrev) {
          return;
        }
        _p.transitioning = true;
        new Promise$1(function (resolve) {
          if (delay > 0) {
            ele.delayAnimation(delay).play().promise().then(resolve);
          } else {
            resolve();
          }
        }).then(function () {
          return ele.animation({
            style: style,
            duration: duration,
            easing: ele.pstyle('transition-timing-function').value,
            queue: false
          }).play().promise();
        }).then(function () {
          // if( !isBypass ){
          self.removeBypasses(ele, props);
          ele.emitAndNotify('style');
          // }

          _p.transitioning = false;
        });
      } else if (_p.transitioning) {
        this.removeBypasses(ele, props);
        ele.emitAndNotify('style');
        _p.transitioning = false;
      }
    };
    styfn$8.checkTrigger = function (ele, name, fromValue, toValue, getTrigger, onTrigger) {
      var prop = this.properties[name];
      var triggerCheck = getTrigger(prop);
      if (triggerCheck != null && triggerCheck(fromValue, toValue)) {
        onTrigger(prop);
      }
    };
    styfn$8.checkZOrderTrigger = function (ele, name, fromValue, toValue) {
      var _this = this;
      this.checkTrigger(ele, name, fromValue, toValue, function (prop) {
        return prop.triggersZOrder;
      }, function () {
        _this._private.cy.notify('zorder', ele);
      });
    };
    styfn$8.checkBoundsTrigger = function (ele, name, fromValue, toValue) {
      this.checkTrigger(ele, name, fromValue, toValue, function (prop) {
        return prop.triggersBounds;
      }, function (prop) {
        ele.dirtyCompoundBoundsCache();
        ele.dirtyBoundingBoxCache();

        // if the prop change makes the bb of pll bezier edges invalid,
        // then dirty the pll edge bb cache as well
        if (
        // only for beziers -- so performance of other edges isn't affected
        prop.triggersBoundsOfParallelBeziers && name === 'curve-style' && (fromValue === 'bezier' || toValue === 'bezier')) {
          ele.parallelEdges().forEach(function (pllEdge) {
            if (pllEdge.isBundledBezier()) {
              pllEdge.dirtyBoundingBoxCache();
            }
          });
        }
        if (prop.triggersBoundsOfConnectedEdges && name === 'display' && (fromValue === 'none' || toValue === 'none')) {
          ele.connectedEdges().forEach(function (edge) {
            edge.dirtyBoundingBoxCache();
          });
        }
      });
    };
    styfn$8.checkTriggers = function (ele, name, fromValue, toValue) {
      ele.dirtyStyleCache();
      this.checkZOrderTrigger(ele, name, fromValue, toValue);
      this.checkBoundsTrigger(ele, name, fromValue, toValue);
    };

    var styfn$7 = {};

    // bypasses are applied to an existing style on an element, and just tacked on temporarily
    // returns true iff application was successful for at least 1 specified property
    styfn$7.applyBypass = function (eles, name, value, updateTransitions) {
      var self = this;
      var props = [];
      var isBypass = true;

      // put all the properties (can specify one or many) in an array after parsing them
      if (name === '*' || name === '**') {
        // apply to all property names

        if (value !== undefined) {
          for (var i = 0; i < self.properties.length; i++) {
            var prop = self.properties[i];
            var _name = prop.name;
            var parsedProp = this.parse(_name, value, true);
            if (parsedProp) {
              props.push(parsedProp);
            }
          }
        }
      } else if (string(name)) {
        // then parse the single property
        var _parsedProp = this.parse(name, value, true);
        if (_parsedProp) {
          props.push(_parsedProp);
        }
      } else if (plainObject(name)) {
        // then parse each property
        var specifiedProps = name;
        updateTransitions = value;
        var names = Object.keys(specifiedProps);
        for (var _i = 0; _i < names.length; _i++) {
          var _name2 = names[_i];
          var _value = specifiedProps[_name2];
          if (_value === undefined) {
            // try camel case name too
            _value = specifiedProps[dash2camel(_name2)];
          }
          if (_value !== undefined) {
            var _parsedProp2 = this.parse(_name2, _value, true);
            if (_parsedProp2) {
              props.push(_parsedProp2);
            }
          }
        }
      } else {
        // can't do anything without well defined properties
        return false;
      }

      // we've failed if there are no valid properties
      if (props.length === 0) {
        return false;
      }

      // now, apply the bypass properties on the elements
      var ret = false; // return true if at least one succesful bypass applied
      for (var _i2 = 0; _i2 < eles.length; _i2++) {
        // for each ele
        var ele = eles[_i2];
        var diffProps = {};
        var diffProp = void 0;
        for (var j = 0; j < props.length; j++) {
          // for each prop
          var _prop = props[j];
          if (updateTransitions) {
            var prevProp = ele.pstyle(_prop.name);
            diffProp = diffProps[_prop.name] = {
              prev: prevProp
            };
          }
          ret = this.applyParsedProperty(ele, copy(_prop)) || ret;
          if (updateTransitions) {
            diffProp.next = ele.pstyle(_prop.name);
          }
        } // for props

        if (ret) {
          this.updateStyleHints(ele);
        }
        if (updateTransitions) {
          this.updateTransitions(ele, diffProps, isBypass);
        }
      } // for eles

      return ret;
    };

    // only useful in specific cases like animation
    styfn$7.overrideBypass = function (eles, name, value) {
      name = camel2dash(name);
      for (var i = 0; i < eles.length; i++) {
        var ele = eles[i];
        var prop = ele._private.style[name];
        var type = this.properties[name].type;
        var isColor = type.color;
        var isMulti = type.mutiple;
        var oldValue = !prop ? null : prop.pfValue != null ? prop.pfValue : prop.value;
        if (!prop || !prop.bypass) {
          // need a bypass if one doesn't exist
          this.applyBypass(ele, name, value);
        } else {
          prop.value = value;
          if (prop.pfValue != null) {
            prop.pfValue = value;
          }
          if (isColor) {
            prop.strValue = 'rgb(' + value.join(',') + ')';
          } else if (isMulti) {
            prop.strValue = value.join(' ');
          } else {
            prop.strValue = '' + value;
          }
          this.updateStyleHints(ele);
        }
        this.checkTriggers(ele, name, oldValue, value);
      }
    };
    styfn$7.removeAllBypasses = function (eles, updateTransitions) {
      return this.removeBypasses(eles, this.propertyNames, updateTransitions);
    };
    styfn$7.removeBypasses = function (eles, props, updateTransitions) {
      var isBypass = true;
      for (var j = 0; j < eles.length; j++) {
        var ele = eles[j];
        var diffProps = {};
        for (var i = 0; i < props.length; i++) {
          var name = props[i];
          var prop = this.properties[name];
          var prevProp = ele.pstyle(prop.name);
          if (!prevProp || !prevProp.bypass) {
            // if a bypass doesn't exist for the prop, nothing needs to be removed
            continue;
          }
          var value = ''; // empty => remove bypass
          var parsedProp = this.parse(name, value, true);
          var diffProp = diffProps[prop.name] = {
            prev: prevProp
          };
          this.applyParsedProperty(ele, parsedProp);
          diffProp.next = ele.pstyle(prop.name);
        } // for props

        this.updateStyleHints(ele);
        if (updateTransitions) {
          this.updateTransitions(ele, diffProps, isBypass);
        }
      } // for eles
    };

    var styfn$6 = {};

    // gets what an em size corresponds to in pixels relative to a dom element
    styfn$6.getEmSizeInPixels = function () {
      var px = this.containerCss('font-size');
      if (px != null) {
        return parseFloat(px);
      } else {
        return 1; // for headless
      }
    };

    // gets css property from the core container
    styfn$6.containerCss = function (propName) {
      var cy = this._private.cy;
      var domElement = cy.container();
      var containerWindow = cy.window();
      if (containerWindow && domElement && containerWindow.getComputedStyle) {
        return containerWindow.getComputedStyle(domElement).getPropertyValue(propName);
      }
    };

    var styfn$5 = {};

    // gets the rendered style for an element
    styfn$5.getRenderedStyle = function (ele, prop) {
      if (prop) {
        return this.getStylePropertyValue(ele, prop, true);
      } else {
        return this.getRawStyle(ele, true);
      }
    };

    // gets the raw style for an element
    styfn$5.getRawStyle = function (ele, isRenderedVal) {
      var self = this;
      ele = ele[0]; // insure it's an element

      if (ele) {
        var rstyle = {};
        for (var i = 0; i < self.properties.length; i++) {
          var prop = self.properties[i];
          var val = self.getStylePropertyValue(ele, prop.name, isRenderedVal);
          if (val != null) {
            rstyle[prop.name] = val;
            rstyle[dash2camel(prop.name)] = val;
          }
        }
        return rstyle;
      }
    };
    styfn$5.getIndexedStyle = function (ele, property, subproperty, index) {
      var pstyle = ele.pstyle(property)[subproperty][index];
      return pstyle != null ? pstyle : ele.cy().style().getDefaultProperty(property)[subproperty][0];
    };
    styfn$5.getStylePropertyValue = function (ele, propName, isRenderedVal) {
      var self = this;
      ele = ele[0]; // insure it's an element

      if (ele) {
        var prop = self.properties[propName];
        if (prop.alias) {
          prop = prop.pointsTo;
        }
        var type = prop.type;
        var styleProp = ele.pstyle(prop.name);
        if (styleProp) {
          var value = styleProp.value,
            units = styleProp.units,
            strValue = styleProp.strValue;
          if (isRenderedVal && type.number && value != null && number$1(value)) {
            var zoom = ele.cy().zoom();
            var getRenderedValue = function getRenderedValue(val) {
              return val * zoom;
            };
            var getValueStringWithUnits = function getValueStringWithUnits(val, units) {
              return getRenderedValue(val) + units;
            };
            var isArrayValue = array(value);
            var haveUnits = isArrayValue ? units.every(function (u) {
              return u != null;
            }) : units != null;
            if (haveUnits) {
              if (isArrayValue) {
                return value.map(function (v, i) {
                  return getValueStringWithUnits(v, units[i]);
                }).join(' ');
              } else {
                return getValueStringWithUnits(value, units);
              }
            } else {
              if (isArrayValue) {
                return value.map(function (v) {
                  return string(v) ? v : '' + getRenderedValue(v);
                }).join(' ');
              } else {
                return '' + getRenderedValue(value);
              }
            }
          } else if (strValue != null) {
            return strValue;
          }
        }
        return null;
      }
    };
    styfn$5.getAnimationStartStyle = function (ele, aniProps) {
      var rstyle = {};
      for (var i = 0; i < aniProps.length; i++) {
        var aniProp = aniProps[i];
        var name = aniProp.name;
        var styleProp = ele.pstyle(name);
        if (styleProp !== undefined) {
          // then make a prop of it
          if (plainObject(styleProp)) {
            styleProp = this.parse(name, styleProp.strValue);
          } else {
            styleProp = this.parse(name, styleProp);
          }
        }
        if (styleProp) {
          rstyle[name] = styleProp;
        }
      }
      return rstyle;
    };
    styfn$5.getPropsList = function (propsObj) {
      var self = this;
      var rstyle = [];
      var style = propsObj;
      var props = self.properties;
      if (style) {
        var names = Object.keys(style);
        for (var i = 0; i < names.length; i++) {
          var name = names[i];
          var val = style[name];
          var prop = props[name] || props[camel2dash(name)];
          var styleProp = this.parse(prop.name, val);
          if (styleProp) {
            rstyle.push(styleProp);
          }
        }
      }
      return rstyle;
    };
    styfn$5.getNonDefaultPropertiesHash = function (ele, propNames, seed) {
      var hash = seed.slice();
      var name, val, strVal, chVal;
      var i, j;
      for (i = 0; i < propNames.length; i++) {
        name = propNames[i];
        val = ele.pstyle(name, false);
        if (val == null) {
          continue;
        } else if (val.pfValue != null) {
          hash[0] = hashInt(chVal, hash[0]);
          hash[1] = hashIntAlt(chVal, hash[1]);
        } else {
          strVal = val.strValue;
          for (j = 0; j < strVal.length; j++) {
            chVal = strVal.charCodeAt(j);
            hash[0] = hashInt(chVal, hash[0]);
            hash[1] = hashIntAlt(chVal, hash[1]);
          }
        }
      }
      return hash;
    };
    styfn$5.getPropertiesHash = styfn$5.getNonDefaultPropertiesHash;

    var styfn$4 = {};
    styfn$4.appendFromJson = function (json) {
      var style = this;
      for (var i = 0; i < json.length; i++) {
        var context = json[i];
        var selector = context.selector;
        var props = context.style || context.css;
        var names = Object.keys(props);
        style.selector(selector); // apply selector

        for (var j = 0; j < names.length; j++) {
          var name = names[j];
          var value = props[name];
          style.css(name, value); // apply property
        }
      }

      return style;
    };

    // accessible cy.style() function
    styfn$4.fromJson = function (json) {
      var style = this;
      style.resetToDefault();
      style.appendFromJson(json);
      return style;
    };

    // get json from cy.style() api
    styfn$4.json = function () {
      var json = [];
      for (var i = this.defaultLength; i < this.length; i++) {
        var cxt = this[i];
        var selector = cxt.selector;
        var props = cxt.properties;
        var css = {};
        for (var j = 0; j < props.length; j++) {
          var prop = props[j];
          css[prop.name] = prop.strValue;
        }
        json.push({
          selector: !selector ? 'core' : selector.toString(),
          style: css
        });
      }
      return json;
    };

    var styfn$3 = {};
    styfn$3.appendFromString = function (string) {
      var self = this;
      var style = this;
      var remaining = '' + string;
      var selAndBlockStr;
      var blockRem;
      var propAndValStr;

      // remove comments from the style string
      remaining = remaining.replace(/[/][*](\s|.)+?[*][/]/g, '');
      function removeSelAndBlockFromRemaining() {
        // remove the parsed selector and block from the remaining text to parse
        if (remaining.length > selAndBlockStr.length) {
          remaining = remaining.substr(selAndBlockStr.length);
        } else {
          remaining = '';
        }
      }
      function removePropAndValFromRem() {
        // remove the parsed property and value from the remaining block text to parse
        if (blockRem.length > propAndValStr.length) {
          blockRem = blockRem.substr(propAndValStr.length);
        } else {
          blockRem = '';
        }
      }
      for (;;) {
        var nothingLeftToParse = remaining.match(/^\s*$/);
        if (nothingLeftToParse) {
          break;
        }
        var selAndBlock = remaining.match(/^\s*((?:.|\s)+?)\s*\{((?:.|\s)+?)\}/);
        if (!selAndBlock) {
          warn('Halting stylesheet parsing: String stylesheet contains more to parse but no selector and block found in: ' + remaining);
          break;
        }
        selAndBlockStr = selAndBlock[0];

        // parse the selector
        var selectorStr = selAndBlock[1];
        if (selectorStr !== 'core') {
          var selector = new Selector(selectorStr);
          if (selector.invalid) {
            warn('Skipping parsing of block: Invalid selector found in string stylesheet: ' + selectorStr);

            // skip this selector and block
            removeSelAndBlockFromRemaining();
            continue;
          }
        }

        // parse the block of properties and values
        var blockStr = selAndBlock[2];
        var invalidBlock = false;
        blockRem = blockStr;
        var props = [];
        for (;;) {
          var _nothingLeftToParse = blockRem.match(/^\s*$/);
          if (_nothingLeftToParse) {
            break;
          }
          var propAndVal = blockRem.match(/^\s*(.+?)\s*:\s*(.+?)(?:\s*;|\s*$)/);
          if (!propAndVal) {
            warn('Skipping parsing of block: Invalid formatting of style property and value definitions found in:' + blockStr);
            invalidBlock = true;
            break;
          }
          propAndValStr = propAndVal[0];
          var propStr = propAndVal[1];
          var valStr = propAndVal[2];
          var prop = self.properties[propStr];
          if (!prop) {
            warn('Skipping property: Invalid property name in: ' + propAndValStr);

            // skip this property in the block
            removePropAndValFromRem();
            continue;
          }
          var parsedProp = style.parse(propStr, valStr);
          if (!parsedProp) {
            warn('Skipping property: Invalid property definition in: ' + propAndValStr);

            // skip this property in the block
            removePropAndValFromRem();
            continue;
          }
          props.push({
            name: propStr,
            val: valStr
          });
          removePropAndValFromRem();
        }
        if (invalidBlock) {
          removeSelAndBlockFromRemaining();
          break;
        }

        // put the parsed block in the style
        style.selector(selectorStr);
        for (var i = 0; i < props.length; i++) {
          var _prop = props[i];
          style.css(_prop.name, _prop.val);
        }
        removeSelAndBlockFromRemaining();
      }
      return style;
    };
    styfn$3.fromString = function (string) {
      var style = this;
      style.resetToDefault();
      style.appendFromString(string);
      return style;
    };

    var styfn$2 = {};
    (function () {
      var number$1 = number;
      var rgba = rgbaNoBackRefs;
      var hsla = hslaNoBackRefs;
      var hex3$1 = hex3;
      var hex6$1 = hex6;
      var data = function data(prefix) {
        return '^' + prefix + '\\s*\\(\\s*([\\w\\.]+)\\s*\\)$';
      };
      var mapData = function mapData(prefix) {
        var mapArg = number$1 + '|\\w+|' + rgba + '|' + hsla + '|' + hex3$1 + '|' + hex6$1;
        return '^' + prefix + '\\s*\\(([\\w\\.]+)\\s*\\,\\s*(' + number$1 + ')\\s*\\,\\s*(' + number$1 + ')\\s*,\\s*(' + mapArg + ')\\s*\\,\\s*(' + mapArg + ')\\)$';
      };
      var urlRegexes = ['^url\\s*\\(\\s*[\'"]?(.+?)[\'"]?\\s*\\)$', '^(none)$', '^(.+)$'];

      // each visual style property has a type and needs to be validated according to it
      styfn$2.types = {
        time: {
          number: true,
          min: 0,
          units: 's|ms',
          implicitUnits: 'ms'
        },
        percent: {
          number: true,
          min: 0,
          max: 100,
          units: '%',
          implicitUnits: '%'
        },
        percentages: {
          number: true,
          min: 0,
          max: 100,
          units: '%',
          implicitUnits: '%',
          multiple: true
        },
        zeroOneNumber: {
          number: true,
          min: 0,
          max: 1,
          unitless: true
        },
        zeroOneNumbers: {
          number: true,
          min: 0,
          max: 1,
          unitless: true,
          multiple: true
        },
        nOneOneNumber: {
          number: true,
          min: -1,
          max: 1,
          unitless: true
        },
        nonNegativeInt: {
          number: true,
          min: 0,
          integer: true,
          unitless: true
        },
        nonNegativeNumber: {
          number: true,
          min: 0,
          unitless: true
        },
        position: {
          enums: ['parent', 'origin']
        },
        nodeSize: {
          number: true,
          min: 0,
          enums: ['label']
        },
        number: {
          number: true,
          unitless: true
        },
        numbers: {
          number: true,
          unitless: true,
          multiple: true
        },
        positiveNumber: {
          number: true,
          unitless: true,
          min: 0,
          strictMin: true
        },
        size: {
          number: true,
          min: 0
        },
        bidirectionalSize: {
          number: true
        },
        // allows negative
        bidirectionalSizeMaybePercent: {
          number: true,
          allowPercent: true
        },
        // allows negative
        bidirectionalSizes: {
          number: true,
          multiple: true
        },
        // allows negative
        sizeMaybePercent: {
          number: true,
          min: 0,
          allowPercent: true
        },
        axisDirection: {
          enums: ['horizontal', 'leftward', 'rightward', 'vertical', 'upward', 'downward', 'auto']
        },
        paddingRelativeTo: {
          enums: ['width', 'height', 'average', 'min', 'max']
        },
        bgWH: {
          number: true,
          min: 0,
          allowPercent: true,
          enums: ['auto'],
          multiple: true
        },
        bgPos: {
          number: true,
          allowPercent: true,
          multiple: true
        },
        bgRelativeTo: {
          enums: ['inner', 'include-padding'],
          multiple: true
        },
        bgRepeat: {
          enums: ['repeat', 'repeat-x', 'repeat-y', 'no-repeat'],
          multiple: true
        },
        bgFit: {
          enums: ['none', 'contain', 'cover'],
          multiple: true
        },
        bgCrossOrigin: {
          enums: ['anonymous', 'use-credentials', 'null'],
          multiple: true
        },
        bgClip: {
          enums: ['none', 'node'],
          multiple: true
        },
        bgContainment: {
          enums: ['inside', 'over'],
          multiple: true
        },
        color: {
          color: true
        },
        colors: {
          color: true,
          multiple: true
        },
        fill: {
          enums: ['solid', 'linear-gradient', 'radial-gradient']
        },
        bool: {
          enums: ['yes', 'no']
        },
        bools: {
          enums: ['yes', 'no'],
          multiple: true
        },
        lineStyle: {
          enums: ['solid', 'dotted', 'dashed']
        },
        lineCap: {
          enums: ['butt', 'round', 'square']
        },
        linePosition: {
          enums: ['center', 'inside', 'outside']
        },
        lineJoin: {
          enums: ['round', 'bevel', 'miter']
        },
        borderStyle: {
          enums: ['solid', 'dotted', 'dashed', 'double']
        },
        curveStyle: {
          enums: ['bezier', 'unbundled-bezier', 'haystack', 'segments', 'straight', 'straight-triangle', 'taxi', 'round-segments', 'round-taxi']
        },
        radiusType: {
          enums: ['arc-radius', 'influence-radius'],
          multiple: true
        },
        fontFamily: {
          regex: '^([\\w- \\"]+(?:\\s*,\\s*[\\w- \\"]+)*)$'
        },
        fontStyle: {
          enums: ['italic', 'normal', 'oblique']
        },
        fontWeight: {
          enums: ['normal', 'bold', 'bolder', 'lighter', '100', '200', '300', '400', '500', '600', '800', '900', 100, 200, 300, 400, 500, 600, 700, 800, 900]
        },
        textDecoration: {
          enums: ['none', 'underline', 'overline', 'line-through']
        },
        textTransform: {
          enums: ['none', 'uppercase', 'lowercase']
        },
        textWrap: {
          enums: ['none', 'wrap', 'ellipsis']
        },
        textOverflowWrap: {
          enums: ['whitespace', 'anywhere']
        },
        textBackgroundShape: {
          enums: ['rectangle', 'roundrectangle', 'round-rectangle']
        },
        nodeShape: {
          enums: ['rectangle', 'roundrectangle', 'round-rectangle', 'cutrectangle', 'cut-rectangle', 'bottomroundrectangle', 'bottom-round-rectangle', 'barrel', 'ellipse', 'triangle', 'round-triangle', 'square', 'pentagon', 'round-pentagon', 'hexagon', 'round-hexagon', 'concavehexagon', 'concave-hexagon', 'heptagon', 'round-heptagon', 'octagon', 'round-octagon', 'tag', 'round-tag', 'star', 'diamond', 'round-diamond', 'vee', 'rhomboid', 'right-rhomboid', 'polygon']
        },
        overlayShape: {
          enums: ['roundrectangle', 'round-rectangle', 'ellipse']
        },
        cornerRadius: {
          number: true,
          min: 0,
          units: 'px|em',
          implicitUnits: 'px',
          enums: ['auto']
        },
        compoundIncludeLabels: {
          enums: ['include', 'exclude']
        },
        arrowShape: {
          enums: ['tee', 'triangle', 'triangle-tee', 'circle-triangle', 'triangle-cross', 'triangle-backcurve', 'vee', 'square', 'circle', 'diamond', 'chevron', 'none']
        },
        arrowFill: {
          enums: ['filled', 'hollow']
        },
        arrowWidth: {
          number: true,
          units: '%|px|em',
          implicitUnits: 'px',
          enums: ['match-line']
        },
        display: {
          enums: ['element', 'none']
        },
        visibility: {
          enums: ['hidden', 'visible']
        },
        zCompoundDepth: {
          enums: ['bottom', 'orphan', 'auto', 'top']
        },
        zIndexCompare: {
          enums: ['auto', 'manual']
        },
        valign: {
          enums: ['top', 'center', 'bottom']
        },
        halign: {
          enums: ['left', 'center', 'right']
        },
        justification: {
          enums: ['left', 'center', 'right', 'auto']
        },
        text: {
          string: true
        },
        data: {
          mapping: true,
          regex: data('data')
        },
        layoutData: {
          mapping: true,
          regex: data('layoutData')
        },
        scratch: {
          mapping: true,
          regex: data('scratch')
        },
        mapData: {
          mapping: true,
          regex: mapData('mapData')
        },
        mapLayoutData: {
          mapping: true,
          regex: mapData('mapLayoutData')
        },
        mapScratch: {
          mapping: true,
          regex: mapData('mapScratch')
        },
        fn: {
          mapping: true,
          fn: true
        },
        url: {
          regexes: urlRegexes,
          singleRegexMatchValue: true
        },
        urls: {
          regexes: urlRegexes,
          singleRegexMatchValue: true,
          multiple: true
        },
        propList: {
          propList: true
        },
        angle: {
          number: true,
          units: 'deg|rad',
          implicitUnits: 'rad'
        },
        textRotation: {
          number: true,
          units: 'deg|rad',
          implicitUnits: 'rad',
          enums: ['none', 'autorotate']
        },
        polygonPointList: {
          number: true,
          multiple: true,
          evenMultiple: true,
          min: -1,
          max: 1,
          unitless: true
        },
        edgeDistances: {
          enums: ['intersection', 'node-position', 'endpoints']
        },
        edgeEndpoint: {
          number: true,
          multiple: true,
          units: '%|px|em|deg|rad',
          implicitUnits: 'px',
          enums: ['inside-to-node', 'outside-to-node', 'outside-to-node-or-label', 'outside-to-line', 'outside-to-line-or-label'],
          singleEnum: true,
          validate: function validate(valArr, unitsArr) {
            switch (valArr.length) {
              case 2:
                // can be % or px only
                return unitsArr[0] !== 'deg' && unitsArr[0] !== 'rad' && unitsArr[1] !== 'deg' && unitsArr[1] !== 'rad';
              case 1:
                // can be enum, deg, or rad only
                return string(valArr[0]) || unitsArr[0] === 'deg' || unitsArr[0] === 'rad';
              default:
                return false;
            }
          }
        },
        easing: {
          regexes: ['^(spring)\\s*\\(\\s*(' + number$1 + ')\\s*,\\s*(' + number$1 + ')\\s*\\)$', '^(cubic-bezier)\\s*\\(\\s*(' + number$1 + ')\\s*,\\s*(' + number$1 + ')\\s*,\\s*(' + number$1 + ')\\s*,\\s*(' + number$1 + ')\\s*\\)$'],
          enums: ['linear', 'ease', 'ease-in', 'ease-out', 'ease-in-out', 'ease-in-sine', 'ease-out-sine', 'ease-in-out-sine', 'ease-in-quad', 'ease-out-quad', 'ease-in-out-quad', 'ease-in-cubic', 'ease-out-cubic', 'ease-in-out-cubic', 'ease-in-quart', 'ease-out-quart', 'ease-in-out-quart', 'ease-in-quint', 'ease-out-quint', 'ease-in-out-quint', 'ease-in-expo', 'ease-out-expo', 'ease-in-out-expo', 'ease-in-circ', 'ease-out-circ', 'ease-in-out-circ']
        },
        gradientDirection: {
          enums: ['to-bottom', 'to-top', 'to-left', 'to-right', 'to-bottom-right', 'to-bottom-left', 'to-top-right', 'to-top-left', 'to-right-bottom', 'to-left-bottom', 'to-right-top', 'to-left-top' // different order
          ]
        },

        boundsExpansion: {
          number: true,
          multiple: true,
          min: 0,
          validate: function validate(valArr) {
            var length = valArr.length;
            return length === 1 || length === 2 || length === 4;
          }
        }
      };
      var diff = {
        zeroNonZero: function zeroNonZero(val1, val2) {
          if ((val1 == null || val2 == null) && val1 !== val2) {
            return true; // null cases could represent any value
          }
          if (val1 == 0 && val2 != 0) {
            return true;
          } else if (val1 != 0 && val2 == 0) {
            return true;
          } else {
            return false;
          }
        },
        any: function any(val1, val2) {
          return val1 != val2;
        },
        emptyNonEmpty: function emptyNonEmpty(str1, str2) {
          var empty1 = emptyString(str1);
          var empty2 = emptyString(str2);
          return empty1 && !empty2 || !empty1 && empty2;
        }
      };

      // define visual style properties
      //
      // - n.b. adding a new group of props may require updates to updateStyleHints()
      // - adding new props to an existing group gets handled automatically

      var t = styfn$2.types;
      var mainLabel = [{
        name: 'label',
        type: t.text,
        triggersBounds: diff.any,
        triggersZOrder: diff.emptyNonEmpty
      }, {
        name: 'text-rotation',
        type: t.textRotation,
        triggersBounds: diff.any
      }, {
        name: 'text-margin-x',
        type: t.bidirectionalSize,
        triggersBounds: diff.any
      }, {
        name: 'text-margin-y',
        type: t.bidirectionalSize,
        triggersBounds: diff.any
      }];
      var sourceLabel = [{
        name: 'source-label',
        type: t.text,
        triggersBounds: diff.any
      }, {
        name: 'source-text-rotation',
        type: t.textRotation,
        triggersBounds: diff.any
      }, {
        name: 'source-text-margin-x',
        type: t.bidirectionalSize,
        triggersBounds: diff.any
      }, {
        name: 'source-text-margin-y',
        type: t.bidirectionalSize,
        triggersBounds: diff.any
      }, {
        name: 'source-text-offset',
        type: t.size,
        triggersBounds: diff.any
      }];
      var targetLabel = [{
        name: 'target-label',
        type: t.text,
        triggersBounds: diff.any
      }, {
        name: 'target-text-rotation',
        type: t.textRotation,
        triggersBounds: diff.any
      }, {
        name: 'target-text-margin-x',
        type: t.bidirectionalSize,
        triggersBounds: diff.any
      }, {
        name: 'target-text-margin-y',
        type: t.bidirectionalSize,
        triggersBounds: diff.any
      }, {
        name: 'target-text-offset',
        type: t.size,
        triggersBounds: diff.any
      }];
      var labelDimensions = [{
        name: 'font-family',
        type: t.fontFamily,
        triggersBounds: diff.any
      }, {
        name: 'font-style',
        type: t.fontStyle,
        triggersBounds: diff.any
      }, {
        name: 'font-weight',
        type: t.fontWeight,
        triggersBounds: diff.any
      }, {
        name: 'font-size',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'text-transform',
        type: t.textTransform,
        triggersBounds: diff.any
      }, {
        name: 'text-wrap',
        type: t.textWrap,
        triggersBounds: diff.any
      }, {
        name: 'text-overflow-wrap',
        type: t.textOverflowWrap,
        triggersBounds: diff.any
      }, {
        name: 'text-max-width',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'text-outline-width',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'line-height',
        type: t.positiveNumber,
        triggersBounds: diff.any
      }];
      var commonLabel = [{
        name: 'text-valign',
        type: t.valign,
        triggersBounds: diff.any
      }, {
        name: 'text-halign',
        type: t.halign,
        triggersBounds: diff.any
      }, {
        name: 'color',
        type: t.color
      }, {
        name: 'text-outline-color',
        type: t.color
      }, {
        name: 'text-outline-opacity',
        type: t.zeroOneNumber
      }, {
        name: 'text-background-color',
        type: t.color
      }, {
        name: 'text-background-opacity',
        type: t.zeroOneNumber
      }, {
        name: 'text-background-padding',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'text-border-opacity',
        type: t.zeroOneNumber
      }, {
        name: 'text-border-color',
        type: t.color
      }, {
        name: 'text-border-width',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'text-border-style',
        type: t.borderStyle,
        triggersBounds: diff.any
      }, {
        name: 'text-background-shape',
        type: t.textBackgroundShape,
        triggersBounds: diff.any
      }, {
        name: 'text-justification',
        type: t.justification
      }];
      var behavior = [{
        name: 'events',
        type: t.bool,
        triggersZOrder: diff.any
      }, {
        name: 'text-events',
        type: t.bool,
        triggersZOrder: diff.any
      }];
      var visibility = [{
        name: 'display',
        type: t.display,
        triggersZOrder: diff.any,
        triggersBounds: diff.any,
        triggersBoundsOfConnectedEdges: true
      }, {
        name: 'visibility',
        type: t.visibility,
        triggersZOrder: diff.any
      }, {
        name: 'opacity',
        type: t.zeroOneNumber,
        triggersZOrder: diff.zeroNonZero
      }, {
        name: 'text-opacity',
        type: t.zeroOneNumber
      }, {
        name: 'min-zoomed-font-size',
        type: t.size
      }, {
        name: 'z-compound-depth',
        type: t.zCompoundDepth,
        triggersZOrder: diff.any
      }, {
        name: 'z-index-compare',
        type: t.zIndexCompare,
        triggersZOrder: diff.any
      }, {
        name: 'z-index',
        type: t.number,
        triggersZOrder: diff.any
      }];
      var overlay = [{
        name: 'overlay-padding',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'overlay-color',
        type: t.color
      }, {
        name: 'overlay-opacity',
        type: t.zeroOneNumber,
        triggersBounds: diff.zeroNonZero
      }, {
        name: 'overlay-shape',
        type: t.overlayShape,
        triggersBounds: diff.any
      }, {
        name: 'overlay-corner-radius',
        type: t.cornerRadius
      }];
      var underlay = [{
        name: 'underlay-padding',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'underlay-color',
        type: t.color
      }, {
        name: 'underlay-opacity',
        type: t.zeroOneNumber,
        triggersBounds: diff.zeroNonZero
      }, {
        name: 'underlay-shape',
        type: t.overlayShape,
        triggersBounds: diff.any
      }, {
        name: 'underlay-corner-radius',
        type: t.cornerRadius
      }];
      var transition = [{
        name: 'transition-property',
        type: t.propList
      }, {
        name: 'transition-duration',
        type: t.time
      }, {
        name: 'transition-delay',
        type: t.time
      }, {
        name: 'transition-timing-function',
        type: t.easing
      }];
      var nodeSizeHashOverride = function nodeSizeHashOverride(ele, parsedProp) {
        if (parsedProp.value === 'label') {
          return -ele.poolIndex(); // no hash key hits is using label size (hitrate for perf probably low anyway)
        } else {
          return parsedProp.pfValue;
        }
      };
      var nodeBody = [{
        name: 'height',
        type: t.nodeSize,
        triggersBounds: diff.any,
        hashOverride: nodeSizeHashOverride
      }, {
        name: 'width',
        type: t.nodeSize,
        triggersBounds: diff.any,
        hashOverride: nodeSizeHashOverride
      }, {
        name: 'shape',
        type: t.nodeShape,
        triggersBounds: diff.any
      }, {
        name: 'shape-polygon-points',
        type: t.polygonPointList,
        triggersBounds: diff.any
      }, {
        name: 'corner-radius',
        type: t.cornerRadius
      }, {
        name: 'background-color',
        type: t.color
      }, {
        name: 'background-fill',
        type: t.fill
      }, {
        name: 'background-opacity',
        type: t.zeroOneNumber
      }, {
        name: 'background-blacken',
        type: t.nOneOneNumber
      }, {
        name: 'background-gradient-stop-colors',
        type: t.colors
      }, {
        name: 'background-gradient-stop-positions',
        type: t.percentages
      }, {
        name: 'background-gradient-direction',
        type: t.gradientDirection
      }, {
        name: 'padding',
        type: t.sizeMaybePercent,
        triggersBounds: diff.any
      }, {
        name: 'padding-relative-to',
        type: t.paddingRelativeTo,
        triggersBounds: diff.any
      }, {
        name: 'bounds-expansion',
        type: t.boundsExpansion,
        triggersBounds: diff.any
      }];
      var nodeBorder = [{
        name: 'border-color',
        type: t.color
      }, {
        name: 'border-opacity',
        type: t.zeroOneNumber
      }, {
        name: 'border-width',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'border-style',
        type: t.borderStyle
      }, {
        name: 'border-cap',
        type: t.lineCap
      }, {
        name: 'border-join',
        type: t.lineJoin
      }, {
        name: 'border-dash-pattern',
        type: t.numbers
      }, {
        name: 'border-dash-offset',
        type: t.number
      }, {
        name: 'border-position',
        type: t.linePosition
      }];
      var nodeOutline = [{
        name: 'outline-color',
        type: t.color
      }, {
        name: 'outline-opacity',
        type: t.zeroOneNumber
      }, {
        name: 'outline-width',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'outline-style',
        type: t.borderStyle
      }, {
        name: 'outline-offset',
        type: t.size,
        triggersBounds: diff.any
      }];
      var backgroundImage = [{
        name: 'background-image',
        type: t.urls
      }, {
        name: 'background-image-crossorigin',
        type: t.bgCrossOrigin
      }, {
        name: 'background-image-opacity',
        type: t.zeroOneNumbers
      }, {
        name: 'background-image-containment',
        type: t.bgContainment
      }, {
        name: 'background-image-smoothing',
        type: t.bools
      }, {
        name: 'background-position-x',
        type: t.bgPos
      }, {
        name: 'background-position-y',
        type: t.bgPos
      }, {
        name: 'background-width-relative-to',
        type: t.bgRelativeTo
      }, {
        name: 'background-height-relative-to',
        type: t.bgRelativeTo
      }, {
        name: 'background-repeat',
        type: t.bgRepeat
      }, {
        name: 'background-fit',
        type: t.bgFit
      }, {
        name: 'background-clip',
        type: t.bgClip
      }, {
        name: 'background-width',
        type: t.bgWH
      }, {
        name: 'background-height',
        type: t.bgWH
      }, {
        name: 'background-offset-x',
        type: t.bgPos
      }, {
        name: 'background-offset-y',
        type: t.bgPos
      }];
      var compound = [{
        name: 'position',
        type: t.position,
        triggersBounds: diff.any
      }, {
        name: 'compound-sizing-wrt-labels',
        type: t.compoundIncludeLabels,
        triggersBounds: diff.any
      }, {
        name: 'min-width',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'min-width-bias-left',
        type: t.sizeMaybePercent,
        triggersBounds: diff.any
      }, {
        name: 'min-width-bias-right',
        type: t.sizeMaybePercent,
        triggersBounds: diff.any
      }, {
        name: 'min-height',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'min-height-bias-top',
        type: t.sizeMaybePercent,
        triggersBounds: diff.any
      }, {
        name: 'min-height-bias-bottom',
        type: t.sizeMaybePercent,
        triggersBounds: diff.any
      }];
      var edgeLine = [{
        name: 'line-style',
        type: t.lineStyle
      }, {
        name: 'line-color',
        type: t.color
      }, {
        name: 'line-fill',
        type: t.fill
      }, {
        name: 'line-cap',
        type: t.lineCap
      }, {
        name: 'line-opacity',
        type: t.zeroOneNumber
      }, {
        name: 'line-dash-pattern',
        type: t.numbers
      }, {
        name: 'line-dash-offset',
        type: t.number
      }, {
        name: 'line-gradient-stop-colors',
        type: t.colors
      }, {
        name: 'line-gradient-stop-positions',
        type: t.percentages
      }, {
        name: 'curve-style',
        type: t.curveStyle,
        triggersBounds: diff.any,
        triggersBoundsOfParallelBeziers: true
      }, {
        name: 'haystack-radius',
        type: t.zeroOneNumber,
        triggersBounds: diff.any
      }, {
        name: 'source-endpoint',
        type: t.edgeEndpoint,
        triggersBounds: diff.any
      }, {
        name: 'target-endpoint',
        type: t.edgeEndpoint,
        triggersBounds: diff.any
      }, {
        name: 'control-point-step-size',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'control-point-distances',
        type: t.bidirectionalSizes,
        triggersBounds: diff.any
      }, {
        name: 'control-point-weights',
        type: t.numbers,
        triggersBounds: diff.any
      }, {
        name: 'segment-distances',
        type: t.bidirectionalSizes,
        triggersBounds: diff.any
      }, {
        name: 'segment-weights',
        type: t.numbers,
        triggersBounds: diff.any
      }, {
        name: 'segment-radii',
        type: t.numbers,
        triggersBounds: diff.any
      }, {
        name: 'radius-type',
        type: t.radiusType,
        triggersBounds: diff.any
      }, {
        name: 'taxi-turn',
        type: t.bidirectionalSizeMaybePercent,
        triggersBounds: diff.any
      }, {
        name: 'taxi-turn-min-distance',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'taxi-direction',
        type: t.axisDirection,
        triggersBounds: diff.any
      }, {
        name: 'taxi-radius',
        type: t.number,
        triggersBounds: diff.any
      }, {
        name: 'edge-distances',
        type: t.edgeDistances,
        triggersBounds: diff.any
      }, {
        name: 'arrow-scale',
        type: t.positiveNumber,
        triggersBounds: diff.any
      }, {
        name: 'loop-direction',
        type: t.angle,
        triggersBounds: diff.any
      }, {
        name: 'loop-sweep',
        type: t.angle,
        triggersBounds: diff.any
      }, {
        name: 'source-distance-from-node',
        type: t.size,
        triggersBounds: diff.any
      }, {
        name: 'target-distance-from-node',
        type: t.size,
        triggersBounds: diff.any
      }];
      var ghost = [{
        name: 'ghost',
        type: t.bool,
        triggersBounds: diff.any
      }, {
        name: 'ghost-offset-x',
        type: t.bidirectionalSize,
        triggersBounds: diff.any
      }, {
        name: 'ghost-offset-y',
        type: t.bidirectionalSize,
        triggersBounds: diff.any
      }, {
        name: 'ghost-opacity',
        type: t.zeroOneNumber
      }];
      var core = [{
        name: 'selection-box-color',
        type: t.color
      }, {
        name: 'selection-box-opacity',
        type: t.zeroOneNumber
      }, {
        name: 'selection-box-border-color',
        type: t.color
      }, {
        name: 'selection-box-border-width',
        type: t.size
      }, {
        name: 'active-bg-color',
        type: t.color
      }, {
        name: 'active-bg-opacity',
        type: t.zeroOneNumber
      }, {
        name: 'active-bg-size',
        type: t.size
      }, {
        name: 'outside-texture-bg-color',
        type: t.color
      }, {
        name: 'outside-texture-bg-opacity',
        type: t.zeroOneNumber
      }];

      // pie backgrounds for nodes
      var pie = [];
      styfn$2.pieBackgroundN = 16; // because the pie properties are numbered, give access to a constant N (for renderer use)
      pie.push({
        name: 'pie-size',
        type: t.sizeMaybePercent
      });
      for (var i = 1; i <= styfn$2.pieBackgroundN; i++) {
        pie.push({
          name: 'pie-' + i + '-background-color',
          type: t.color
        });
        pie.push({
          name: 'pie-' + i + '-background-size',
          type: t.percent
        });
        pie.push({
          name: 'pie-' + i + '-background-opacity',
          type: t.zeroOneNumber
        });
      }

      // edge arrows
      var edgeArrow = [];
      var arrowPrefixes = styfn$2.arrowPrefixes = ['source', 'mid-source', 'target', 'mid-target'];
      [{
        name: 'arrow-shape',
        type: t.arrowShape,
        triggersBounds: diff.any
      }, {
        name: 'arrow-color',
        type: t.color
      }, {
        name: 'arrow-fill',
        type: t.arrowFill
      }, {
        name: 'arrow-width',
        type: t.arrowWidth
      }].forEach(function (prop) {
        arrowPrefixes.forEach(function (prefix) {
          var name = prefix + '-' + prop.name;
          var type = prop.type,
            triggersBounds = prop.triggersBounds;
          edgeArrow.push({
            name: name,
            type: type,
            triggersBounds: triggersBounds
          });
        });
      }, {});
      var props = styfn$2.properties = [].concat(behavior, transition, visibility, overlay, underlay, ghost, commonLabel, labelDimensions, mainLabel, sourceLabel, targetLabel, nodeBody, nodeBorder, nodeOutline, backgroundImage, pie, compound, edgeLine, edgeArrow, core);
      var propGroups = styfn$2.propertyGroups = {
        // common to all eles
        behavior: behavior,
        transition: transition,
        visibility: visibility,
        overlay: overlay,
        underlay: underlay,
        ghost: ghost,
        // labels
        commonLabel: commonLabel,
        labelDimensions: labelDimensions,
        mainLabel: mainLabel,
        sourceLabel: sourceLabel,
        targetLabel: targetLabel,
        // node props
        nodeBody: nodeBody,
        nodeBorder: nodeBorder,
        nodeOutline: nodeOutline,
        backgroundImage: backgroundImage,
        pie: pie,
        compound: compound,
        // edge props
        edgeLine: edgeLine,
        edgeArrow: edgeArrow,
        core: core
      };
      var propGroupNames = styfn$2.propertyGroupNames = {};
      var propGroupKeys = styfn$2.propertyGroupKeys = Object.keys(propGroups);
      propGroupKeys.forEach(function (key) {
        propGroupNames[key] = propGroups[key].map(function (prop) {
          return prop.name;
        });
        propGroups[key].forEach(function (prop) {
          return prop.groupKey = key;
        });
      });

      // define aliases
      var aliases = styfn$2.aliases = [{
        name: 'content',
        pointsTo: 'label'
      }, {
        name: 'control-point-distance',
        pointsTo: 'control-point-distances'
      }, {
        name: 'control-point-weight',
        pointsTo: 'control-point-weights'
      }, {
        name: 'segment-distance',
        pointsTo: 'segment-distances'
      }, {
        name: 'segment-weight',
        pointsTo: 'segment-weights'
      }, {
        name: 'segment-radius',
        pointsTo: 'segment-radii'
      }, {
        name: 'edge-text-rotation',
        pointsTo: 'text-rotation'
      }, {
        name: 'padding-left',
        pointsTo: 'padding'
      }, {
        name: 'padding-right',
        pointsTo: 'padding'
      }, {
        name: 'padding-top',
        pointsTo: 'padding'
      }, {
        name: 'padding-bottom',
        pointsTo: 'padding'
      }];

      // list of property names
      styfn$2.propertyNames = props.map(function (p) {
        return p.name;
      });

      // allow access of properties by name ( e.g. style.properties.height )
      for (var _i = 0; _i < props.length; _i++) {
        var prop = props[_i];
        props[prop.name] = prop; // allow lookup by name
      }

      // map aliases
      for (var _i2 = 0; _i2 < aliases.length; _i2++) {
        var alias = aliases[_i2];
        var pointsToProp = props[alias.pointsTo];
        var aliasProp = {
          name: alias.name,
          alias: true,
          pointsTo: pointsToProp
        };

        // add alias prop for parsing
        props.push(aliasProp);
        props[alias.name] = aliasProp; // allow lookup by name
      }
    })();

    styfn$2.getDefaultProperty = function (name) {
      return this.getDefaultProperties()[name];
    };
    styfn$2.getDefaultProperties = function () {
      var _p = this._private;
      if (_p.defaultProperties != null) {
        return _p.defaultProperties;
      }
      var rawProps = extend$1({
        // core props
        'selection-box-color': '#ddd',
        'selection-box-opacity': 0.65,
        'selection-box-border-color': '#aaa',
        'selection-box-border-width': 1,
        'active-bg-color': 'black',
        'active-bg-opacity': 0.15,
        'active-bg-size': 30,
        'outside-texture-bg-color': '#000',
        'outside-texture-bg-opacity': 0.125,
        // common node/edge props
        'events': 'yes',
        'text-events': 'no',
        'text-valign': 'top',
        'text-halign': 'center',
        'text-justification': 'auto',
        'line-height': 1,
        'color': '#000',
        'text-outline-color': '#000',
        'text-outline-width': 0,
        'text-outline-opacity': 1,
        'text-opacity': 1,
        'text-decoration': 'none',
        'text-transform': 'none',
        'text-wrap': 'none',
        'text-overflow-wrap': 'whitespace',
        'text-max-width': 9999,
        'text-background-color': '#000',
        'text-background-opacity': 0,
        'text-background-shape': 'rectangle',
        'text-background-padding': 0,
        'text-border-opacity': 0,
        'text-border-width': 0,
        'text-border-style': 'solid',
        'text-border-color': '#000',
        'font-family': 'Helvetica Neue, Helvetica, sans-serif',
        'font-style': 'normal',
        'font-weight': 'normal',
        'font-size': 16,
        'min-zoomed-font-size': 0,
        'text-rotation': 'none',
        'source-text-rotation': 'none',
        'target-text-rotation': 'none',
        'visibility': 'visible',
        'display': 'element',
        'opacity': 1,
        'z-compound-depth': 'auto',
        'z-index-compare': 'auto',
        'z-index': 0,
        'label': '',
        'text-margin-x': 0,
        'text-margin-y': 0,
        'source-label': '',
        'source-text-offset': 0,
        'source-text-margin-x': 0,
        'source-text-margin-y': 0,
        'target-label': '',
        'target-text-offset': 0,
        'target-text-margin-x': 0,
        'target-text-margin-y': 0,
        'overlay-opacity': 0,
        'overlay-color': '#000',
        'overlay-padding': 10,
        'overlay-shape': 'round-rectangle',
        'overlay-corner-radius': 'auto',
        'underlay-opacity': 0,
        'underlay-color': '#000',
        'underlay-padding': 10,
        'underlay-shape': 'round-rectangle',
        'underlay-corner-radius': 'auto',
        'transition-property': 'none',
        'transition-duration': 0,
        'transition-delay': 0,
        'transition-timing-function': 'linear',
        // node props
        'background-blacken': 0,
        'background-color': '#999',
        'background-fill': 'solid',
        'background-opacity': 1,
        'background-image': 'none',
        'background-image-crossorigin': 'anonymous',
        'background-image-opacity': 1,
        'background-image-containment': 'inside',
        'background-image-smoothing': 'yes',
        'background-position-x': '50%',
        'background-position-y': '50%',
        'background-offset-x': 0,
        'background-offset-y': 0,
        'background-width-relative-to': 'include-padding',
        'background-height-relative-to': 'include-padding',
        'background-repeat': 'no-repeat',
        'background-fit': 'none',
        'background-clip': 'node',
        'background-width': 'auto',
        'background-height': 'auto',
        'border-color': '#000',
        'border-opacity': 1,
        'border-width': 0,
        'border-style': 'solid',
        'border-dash-pattern': [4, 2],
        'border-dash-offset': 0,
        'border-cap': 'butt',
        'border-join': 'miter',
        'border-position': 'center',
        'outline-color': '#999',
        'outline-opacity': 1,
        'outline-width': 0,
        'outline-offset': 0,
        'outline-style': 'solid',
        'height': 30,
        'width': 30,
        'shape': 'ellipse',
        'shape-polygon-points': '-1, -1,   1, -1,   1, 1,   -1, 1',
        'corner-radius': 'auto',
        'bounds-expansion': 0,
        // node gradient
        'background-gradient-direction': 'to-bottom',
        'background-gradient-stop-colors': '#999',
        'background-gradient-stop-positions': '0%',
        // ghost props
        'ghost': 'no',
        'ghost-offset-y': 0,
        'ghost-offset-x': 0,
        'ghost-opacity': 0,
        // compound props
        'padding': 0,
        'padding-relative-to': 'width',
        'position': 'origin',
        'compound-sizing-wrt-labels': 'include',
        'min-width': 0,
        'min-width-bias-left': 0,
        'min-width-bias-right': 0,
        'min-height': 0,
        'min-height-bias-top': 0,
        'min-height-bias-bottom': 0
      }, {
        // node pie bg
        'pie-size': '100%'
      }, [{
        name: 'pie-{{i}}-background-color',
        value: 'black'
      }, {
        name: 'pie-{{i}}-background-size',
        value: '0%'
      }, {
        name: 'pie-{{i}}-background-opacity',
        value: 1
      }].reduce(function (css, prop) {
        for (var i = 1; i <= styfn$2.pieBackgroundN; i++) {
          var name = prop.name.replace('{{i}}', i);
          var val = prop.value;
          css[name] = val;
        }
        return css;
      }, {}), {
        // edge props
        'line-style': 'solid',
        'line-color': '#999',
        'line-fill': 'solid',
        'line-cap': 'butt',
        'line-opacity': 1,
        'line-gradient-stop-colors': '#999',
        'line-gradient-stop-positions': '0%',
        'control-point-step-size': 40,
        'control-point-weights': 0.5,
        'segment-weights': 0.5,
        'segment-distances': 20,
        'segment-radii': 15,
        'radius-type': 'arc-radius',
        'taxi-turn': '50%',
        'taxi-radius': 15,
        'taxi-turn-min-distance': 10,
        'taxi-direction': 'auto',
        'edge-distances': 'intersection',
        'curve-style': 'haystack',
        'haystack-radius': 0,
        'arrow-scale': 1,
        'loop-direction': '-45deg',
        'loop-sweep': '-90deg',
        'source-distance-from-node': 0,
        'target-distance-from-node': 0,
        'source-endpoint': 'outside-to-node',
        'target-endpoint': 'outside-to-node',
        'line-dash-pattern': [6, 3],
        'line-dash-offset': 0
      }, [{
        name: 'arrow-shape',
        value: 'none'
      }, {
        name: 'arrow-color',
        value: '#999'
      }, {
        name: 'arrow-fill',
        value: 'filled'
      }, {
        name: 'arrow-width',
        value: 1
      }].reduce(function (css, prop) {
        styfn$2.arrowPrefixes.forEach(function (prefix) {
          var name = prefix + '-' + prop.name;
          var val = prop.value;
          css[name] = val;
        });
        return css;
      }, {}));
      var parsedProps = {};
      for (var i = 0; i < this.properties.length; i++) {
        var prop = this.properties[i];
        if (prop.pointsTo) {
          continue;
        }
        var name = prop.name;
        var val = rawProps[name];
        var parsedProp = this.parse(name, val);
        parsedProps[name] = parsedProp;
      }
      _p.defaultProperties = parsedProps;
      return _p.defaultProperties;
    };
    styfn$2.addDefaultStylesheet = function () {
      this.selector(':parent').css({
        'shape': 'rectangle',
        'padding': 10,
        'background-color': '#eee',
        'border-color': '#ccc',
        'border-width': 1
      }).selector('edge').css({
        'width': 3
      }).selector(':loop').css({
        'curve-style': 'bezier'
      }).selector('edge:compound').css({
        'curve-style': 'bezier',
        'source-endpoint': 'outside-to-line',
        'target-endpoint': 'outside-to-line'
      }).selector(':selected').css({
        'background-color': '#0169D9',
        'line-color': '#0169D9',
        'source-arrow-color': '#0169D9',
        'target-arrow-color': '#0169D9',
        'mid-source-arrow-color': '#0169D9',
        'mid-target-arrow-color': '#0169D9'
      }).selector(':parent:selected').css({
        'background-color': '#CCE1F9',
        'border-color': '#aec8e5'
      }).selector(':active').css({
        'overlay-color': 'black',
        'overlay-padding': 10,
        'overlay-opacity': 0.25
      });
      this.defaultLength = this.length;
    };

    var styfn$1 = {};

    // a caching layer for property parsing
    styfn$1.parse = function (name, value, propIsBypass, propIsFlat) {
      var self = this;

      // function values can't be cached in all cases, and there isn't much benefit of caching them anyway
      if (fn$6(value)) {
        return self.parseImplWarn(name, value, propIsBypass, propIsFlat);
      }
      var flatKey = propIsFlat === 'mapping' || propIsFlat === true || propIsFlat === false || propIsFlat == null ? 'dontcare' : propIsFlat;
      var bypassKey = propIsBypass ? 't' : 'f';
      var valueKey = '' + value;
      var argHash = hashStrings(name, valueKey, bypassKey, flatKey);
      var propCache = self.propCache = self.propCache || [];
      var ret;
      if (!(ret = propCache[argHash])) {
        ret = propCache[argHash] = self.parseImplWarn(name, value, propIsBypass, propIsFlat);
      }

      // - bypasses can't be shared b/c the value can be changed by animations or otherwise overridden
      // - mappings can't be shared b/c mappings are per-element
      if (propIsBypass || propIsFlat === 'mapping') {
        // need a copy since props are mutated later in their lifecycles
        ret = copy(ret);
        if (ret) {
          ret.value = copy(ret.value); // because it could be an array, e.g. colour
        }
      }

      return ret;
    };
    styfn$1.parseImplWarn = function (name, value, propIsBypass, propIsFlat) {
      var prop = this.parseImpl(name, value, propIsBypass, propIsFlat);
      if (!prop && value != null) {
        warn("The style property `".concat(name, ": ").concat(value, "` is invalid"));
      }
      if (prop && (prop.name === 'width' || prop.name === 'height') && value === 'label') {
        warn('The style value of `label` is deprecated for `' + prop.name + '`');
      }
      return prop;
    };

    // parse a property; return null on invalid; return parsed property otherwise
    // fields :
    // - name : the name of the property
    // - value : the parsed, native-typed value of the property
    // - strValue : a string value that represents the property value in valid css
    // - bypass : true iff the property is a bypass property
    styfn$1.parseImpl = function (name, value, propIsBypass, propIsFlat) {
      var self = this;
      name = camel2dash(name); // make sure the property name is in dash form (e.g. 'property-name' not 'propertyName')

      var property = self.properties[name];
      var passedValue = value;
      var types = self.types;
      if (!property) {
        return null;
      } // return null on property of unknown name
      if (value === undefined) {
        return null;
      } // can't assign undefined

      // the property may be an alias
      if (property.alias) {
        property = property.pointsTo;
        name = property.name;
      }
      var valueIsString = string(value);
      if (valueIsString) {
        // trim the value to make parsing easier
        value = value.trim();
      }
      var type = property.type;
      if (!type) {
        return null;
      } // no type, no luck

      // check if bypass is null or empty string (i.e. indication to delete bypass property)
      if (propIsBypass && (value === '' || value === null)) {
        return {
          name: name,
          value: value,
          bypass: true,
          deleteBypass: true
        };
      }

      // check if value is a function used as a mapper
      if (fn$6(value)) {
        return {
          name: name,
          value: value,
          strValue: 'fn',
          mapped: types.fn,
          bypass: propIsBypass
        };
      }

      // check if value is mapped
      var data, mapData;
      if (!valueIsString || propIsFlat || value.length < 7 || value[1] !== 'a') ; else if (value.length >= 7 && value[0] === 'd' && (data = new RegExp(types.data.regex).exec(value))) {
        if (propIsBypass) {
          return false;
        } // mappers not allowed in bypass

        var mapped = types.data;
        return {
          name: name,
          value: data,
          strValue: '' + value,
          mapped: mapped,
          field: data[1],
          bypass: propIsBypass
        };
      } else if (value.length >= 10 && value[0] === 'm' && (mapData = new RegExp(types.mapData.regex).exec(value))) {
        if (propIsBypass) {
          return false;
        } // mappers not allowed in bypass
        if (type.multiple) {
          return false;
        } // impossible to map to num

        var _mapped = types.mapData;

        // we can map only if the type is a colour or a number
        if (!(type.color || type.number)) {
          return false;
        }
        var valueMin = this.parse(name, mapData[4]); // parse to validate
        if (!valueMin || valueMin.mapped) {
          return false;
        } // can't be invalid or mapped

        var valueMax = this.parse(name, mapData[5]); // parse to validate
        if (!valueMax || valueMax.mapped) {
          return false;
        } // can't be invalid or mapped

        // check if valueMin and valueMax are the same
        if (valueMin.pfValue === valueMax.pfValue || valueMin.strValue === valueMax.strValue) {
          warn('`' + name + ': ' + value + '` is not a valid mapper because the output range is zero; converting to `' + name + ': ' + valueMin.strValue + '`');
          return this.parse(name, valueMin.strValue); // can't make much of a mapper without a range
        } else if (type.color) {
          var c1 = valueMin.value;
          var c2 = valueMax.value;
          var same = c1[0] === c2[0] // red
          && c1[1] === c2[1] // green
          && c1[2] === c2[2] // blue
          && (
          // optional alpha
          c1[3] === c2[3] // same alpha outright
          || (c1[3] == null || c1[3] === 1 // full opacity for colour 1?
          ) && (c2[3] == null || c2[3] === 1) // full opacity for colour 2?
          );

          if (same) {
            return false;
          } // can't make a mapper without a range
        }

        return {
          name: name,
          value: mapData,
          strValue: '' + value,
          mapped: _mapped,
          field: mapData[1],
          fieldMin: parseFloat(mapData[2]),
          // min & max are numeric
          fieldMax: parseFloat(mapData[3]),
          valueMin: valueMin.value,
          valueMax: valueMax.value,
          bypass: propIsBypass
        };
      }
      if (type.multiple && propIsFlat !== 'multiple') {
        var vals;
        if (valueIsString) {
          vals = value.split(/\s+/);
        } else if (array(value)) {
          vals = value;
        } else {
          vals = [value];
        }
        if (type.evenMultiple && vals.length % 2 !== 0) {
          return null;
        }
        var valArr = [];
        var unitsArr = [];
        var pfValArr = [];
        var strVal = '';
        var hasEnum = false;
        for (var i = 0; i < vals.length; i++) {
          var p = self.parse(name, vals[i], propIsBypass, 'multiple');
          hasEnum = hasEnum || string(p.value);
          valArr.push(p.value);
          pfValArr.push(p.pfValue != null ? p.pfValue : p.value);
          unitsArr.push(p.units);
          strVal += (i > 0 ? ' ' : '') + p.strValue;
        }
        if (type.validate && !type.validate(valArr, unitsArr)) {
          return null;
        }
        if (type.singleEnum && hasEnum) {
          if (valArr.length === 1 && string(valArr[0])) {
            return {
              name: name,
              value: valArr[0],
              strValue: valArr[0],
              bypass: propIsBypass
            };
          } else {
            return null;
          }
        }
        return {
          name: name,
          value: valArr,
          pfValue: pfValArr,
          strValue: strVal,
          bypass: propIsBypass,
          units: unitsArr
        };
      }

      // several types also allow enums
      var checkEnums = function checkEnums() {
        for (var _i = 0; _i < type.enums.length; _i++) {
          var en = type.enums[_i];
          if (en === value) {
            return {
              name: name,
              value: value,
              strValue: '' + value,
              bypass: propIsBypass
            };
          }
        }
        return null;
      };

      // check the type and return the appropriate object
      if (type.number) {
        var units;
        var implicitUnits = 'px'; // not set => px

        if (type.units) {
          // use specified units if set
          units = type.units;
        }
        if (type.implicitUnits) {
          implicitUnits = type.implicitUnits;
        }
        if (!type.unitless) {
          if (valueIsString) {
            var unitsRegex = 'px|em' + (type.allowPercent ? '|\\%' : '');
            if (units) {
              unitsRegex = units;
            } // only allow explicit units if so set
            var match = value.match('^(' + number + ')(' + unitsRegex + ')?' + '$');
            if (match) {
              value = match[1];
              units = match[2] || implicitUnits;
            }
          } else if (!units || type.implicitUnits) {
            units = implicitUnits; // implicitly px if unspecified
          }
        }

        value = parseFloat(value);

        // if not a number and enums not allowed, then the value is invalid
        if (isNaN(value) && type.enums === undefined) {
          return null;
        }

        // check if this number type also accepts special keywords in place of numbers
        // (i.e. `left`, `auto`, etc)
        if (isNaN(value) && type.enums !== undefined) {
          value = passedValue;
          return checkEnums();
        }

        // check if value must be an integer
        if (type.integer && !integer(value)) {
          return null;
        }

        // check value is within range
        if (type.min !== undefined && (value < type.min || type.strictMin && value === type.min) || type.max !== undefined && (value > type.max || type.strictMax && value === type.max)) {
          return null;
        }
        var ret = {
          name: name,
          value: value,
          strValue: '' + value + (units ? units : ''),
          units: units,
          bypass: propIsBypass
        };

        // normalise value in pixels
        if (type.unitless || units !== 'px' && units !== 'em') {
          ret.pfValue = value;
        } else {
          ret.pfValue = units === 'px' || !units ? value : this.getEmSizeInPixels() * value;
        }

        // normalise value in ms
        if (units === 'ms' || units === 's') {
          ret.pfValue = units === 'ms' ? value : 1000 * value;
        }

        // normalise value in rad
        if (units === 'deg' || units === 'rad') {
          ret.pfValue = units === 'rad' ? value : deg2rad(value);
        }

        // normalize value in %
        if (units === '%') {
          ret.pfValue = value / 100;
        }
        return ret;
      } else if (type.propList) {
        var props = [];
        var propsStr = '' + value;
        if (propsStr === 'none') ; else {
          // go over each prop

          var propsSplit = propsStr.split(/\s*,\s*|\s+/);
          for (var _i2 = 0; _i2 < propsSplit.length; _i2++) {
            var propName = propsSplit[_i2].trim();
            if (self.properties[propName]) {
              props.push(propName);
            } else {
              warn('`' + propName + '` is not a valid property name');
            }
          }
          if (props.length === 0) {
            return null;
          }
        }
        return {
          name: name,
          value: props,
          strValue: props.length === 0 ? 'none' : props.join(' '),
          bypass: propIsBypass
        };
      } else if (type.color) {
        var tuple = color2tuple(value);
        if (!tuple) {
          return null;
        }
        return {
          name: name,
          value: tuple,
          pfValue: tuple,
          strValue: 'rgb(' + tuple[0] + ',' + tuple[1] + ',' + tuple[2] + ')',
          // n.b. no spaces b/c of multiple support
          bypass: propIsBypass
        };
      } else if (type.regex || type.regexes) {
        // first check enums
        if (type.enums) {
          var enumProp = checkEnums();
          if (enumProp) {
            return enumProp;
          }
        }
        var regexes = type.regexes ? type.regexes : [type.regex];
        for (var _i3 = 0; _i3 < regexes.length; _i3++) {
          var regex = new RegExp(regexes[_i3]); // make a regex from the type string
          var m = regex.exec(value);
          if (m) {
            // regex matches
            return {
              name: name,
              value: type.singleRegexMatchValue ? m[1] : m,
              strValue: '' + value,
              bypass: propIsBypass
            };
          }
        }
        return null; // didn't match any
      } else if (type.string) {
        // just return
        return {
          name: name,
          value: '' + value,
          strValue: '' + value,
          bypass: propIsBypass
        };
      } else if (type.enums) {
        // check enums last because it's a combo type in others
        return checkEnums();
      } else {
        return null; // not a type we can handle
      }
    };

    var Style = function Style(cy) {
      if (!(this instanceof Style)) {
        return new Style(cy);
      }
      if (!core$1(cy)) {
        error('A style must have a core reference');
        return;
      }
      this._private = {
        cy: cy,
        coreStyle: {}
      };
      this.length = 0;
      this.resetToDefault();
    };
    var styfn = Style.prototype;
    styfn.instanceString = function () {
      return 'style';
    };

    // remove all contexts
    styfn.clear = function () {
      var _p = this._private;
      var cy = _p.cy;
      var eles = cy.elements();
      for (var i = 0; i < this.length; i++) {
        this[i] = undefined;
      }
      this.length = 0;
      _p.contextStyles = {};
      _p.propDiffs = {};
      this.cleanElements(eles, true);
      eles.forEach(function (ele) {
        var ele_p = ele[0]._private;
        ele_p.styleDirty = true;
        ele_p.appliedInitStyle = false;
      });
      return this; // chaining
    };

    styfn.resetToDefault = function () {
      this.clear();
      this.addDefaultStylesheet();
      return this;
    };

    // builds a style object for the 'core' selector
    styfn.core = function (propName) {
      return this._private.coreStyle[propName] || this.getDefaultProperty(propName);
    };

    // create a new context from the specified selector string and switch to that context
    styfn.selector = function (selectorStr) {
      // 'core' is a special case and does not need a selector
      var selector = selectorStr === 'core' ? null : new Selector(selectorStr);
      var i = this.length++; // new context means new index
      this[i] = {
        selector: selector,
        properties: [],
        mappedProperties: [],
        index: i
      };
      return this; // chaining
    };

    // add one or many css rules to the current context
    styfn.css = function () {
      var self = this;
      var args = arguments;
      if (args.length === 1) {
        var map = args[0];
        for (var i = 0; i < self.properties.length; i++) {
          var prop = self.properties[i];
          var mapVal = map[prop.name];
          if (mapVal === undefined) {
            mapVal = map[dash2camel(prop.name)];
          }
          if (mapVal !== undefined) {
            this.cssRule(prop.name, mapVal);
          }
        }
      } else if (args.length === 2) {
        this.cssRule(args[0], args[1]);
      }

      // do nothing if args are invalid

      return this; // chaining
    };

    styfn.style = styfn.css;

    // add a single css rule to the current context
    styfn.cssRule = function (name, value) {
      // name-value pair
      var property = this.parse(name, value);

      // add property to current context if valid
      if (property) {
        var i = this.length - 1;
        this[i].properties.push(property);
        this[i].properties[property.name] = property; // allow access by name as well

        if (property.name.match(/pie-(\d+)-background-size/) && property.value) {
          this._private.hasPie = true;
        }
        if (property.mapped) {
          this[i].mappedProperties.push(property);
        }

        // add to core style if necessary
        var currentSelectorIsCore = !this[i].selector;
        if (currentSelectorIsCore) {
          this._private.coreStyle[property.name] = property;
        }
      }
      return this; // chaining
    };

    styfn.append = function (style) {
      if (stylesheet(style)) {
        style.appendToStyle(this);
      } else if (array(style)) {
        this.appendFromJson(style);
      } else if (string(style)) {
        this.appendFromString(style);
      } // you probably wouldn't want to append a Style, since you'd duplicate the default parts

      return this;
    };

    // static function
    Style.fromJson = function (cy, json) {
      var style = new Style(cy);
      style.fromJson(json);
      return style;
    };
    Style.fromString = function (cy, string) {
      return new Style(cy).fromString(string);
    };
    [styfn$8, styfn$7, styfn$6, styfn$5, styfn$4, styfn$3, styfn$2, styfn$1].forEach(function (props) {
      extend$1(styfn, props);
    });
    Style.types = styfn.types;
    Style.properties = styfn.properties;
    Style.propertyGroups = styfn.propertyGroups;
    Style.propertyGroupNames = styfn.propertyGroupNames;
    Style.propertyGroupKeys = styfn.propertyGroupKeys;

    var corefn$2 = {
      style: function style(newStyle) {
        if (newStyle) {
          var s = this.setStyle(newStyle);
          s.update();
        }
        return this._private.style;
      },
      setStyle: function setStyle(style) {
        var _p = this._private;
        if (stylesheet(style)) {
          _p.style = style.generateStyle(this);
        } else if (array(style)) {
          _p.style = Style.fromJson(this, style);
        } else if (string(style)) {
          _p.style = Style.fromString(this, style);
        } else {
          _p.style = Style(this);
        }
        return _p.style;
      },
      // e.g. cy.data() changed => recalc ele mappers
      updateStyle: function updateStyle() {
        this.mutableElements().updateStyle(); // just send to all eles
      }
    };

    var defaultSelectionType = 'single';
    var corefn$1 = {
      autolock: function autolock(bool) {
        if (bool !== undefined) {
          this._private.autolock = bool ? true : false;
        } else {
          return this._private.autolock;
        }
        return this; // chaining
      },

      autoungrabify: function autoungrabify(bool) {
        if (bool !== undefined) {
          this._private.autoungrabify = bool ? true : false;
        } else {
          return this._private.autoungrabify;
        }
        return this; // chaining
      },

      autounselectify: function autounselectify(bool) {
        if (bool !== undefined) {
          this._private.autounselectify = bool ? true : false;
        } else {
          return this._private.autounselectify;
        }
        return this; // chaining
      },

      selectionType: function selectionType(selType) {
        var _p = this._private;
        if (_p.selectionType == null) {
          _p.selectionType = defaultSelectionType;
        }
        if (selType !== undefined) {
          if (selType === 'additive' || selType === 'single') {
            _p.selectionType = selType;
          }
        } else {
          return _p.selectionType;
        }
        return this;
      },
      panningEnabled: function panningEnabled(bool) {
        if (bool !== undefined) {
          this._private.panningEnabled = bool ? true : false;
        } else {
          return this._private.panningEnabled;
        }
        return this; // chaining
      },

      userPanningEnabled: function userPanningEnabled(bool) {
        if (bool !== undefined) {
          this._private.userPanningEnabled = bool ? true : false;
        } else {
          return this._private.userPanningEnabled;
        }
        return this; // chaining
      },

      zoomingEnabled: function zoomingEnabled(bool) {
        if (bool !== undefined) {
          this._private.zoomingEnabled = bool ? true : false;
        } else {
          return this._private.zoomingEnabled;
        }
        return this; // chaining
      },

      userZoomingEnabled: function userZoomingEnabled(bool) {
        if (bool !== undefined) {
          this._private.userZoomingEnabled = bool ? true : false;
        } else {
          return this._private.userZoomingEnabled;
        }
        return this; // chaining
      },

      boxSelectionEnabled: function boxSelectionEnabled(bool) {
        if (bool !== undefined) {
          this._private.boxSelectionEnabled = bool ? true : false;
        } else {
          return this._private.boxSelectionEnabled;
        }
        return this; // chaining
      },

      pan: function pan() {
        var args = arguments;
        var pan = this._private.pan;
        var dim, val, dims, x, y;
        switch (args.length) {
          case 0:
            // .pan()
            return pan;
          case 1:
            if (string(args[0])) {
              // .pan('x')
              dim = args[0];
              return pan[dim];
            } else if (plainObject(args[0])) {
              // .pan({ x: 0, y: 100 })
              if (!this._private.panningEnabled) {
                return this;
              }
              dims = args[0];
              x = dims.x;
              y = dims.y;
              if (number$1(x)) {
                pan.x = x;
              }
              if (number$1(y)) {
                pan.y = y;
              }
              this.emit('pan viewport');
            }
            break;
          case 2:
            // .pan('x', 100)
            if (!this._private.panningEnabled) {
              return this;
            }
            dim = args[0];
            val = args[1];
            if ((dim === 'x' || dim === 'y') && number$1(val)) {
              pan[dim] = val;
            }
            this.emit('pan viewport');
            break;
          // invalid
        }

        this.notify('viewport');
        return this; // chaining
      },

      panBy: function panBy(arg0, arg1) {
        var args = arguments;
        var pan = this._private.pan;
        var dim, val, dims, x, y;
        if (!this._private.panningEnabled) {
          return this;
        }
        switch (args.length) {
          case 1:
            if (plainObject(arg0)) {
              // .panBy({ x: 0, y: 100 })
              dims = args[0];
              x = dims.x;
              y = dims.y;
              if (number$1(x)) {
                pan.x += x;
              }
              if (number$1(y)) {
                pan.y += y;
              }
              this.emit('pan viewport');
            }
            break;
          case 2:
            // .panBy('x', 100)
            dim = arg0;
            val = arg1;
            if ((dim === 'x' || dim === 'y') && number$1(val)) {
              pan[dim] += val;
            }
            this.emit('pan viewport');
            break;
          // invalid
        }

        this.notify('viewport');
        return this; // chaining
      },

      fit: function fit(elements, padding) {
        var viewportState = this.getFitViewport(elements, padding);
        if (viewportState) {
          var _p = this._private;
          _p.zoom = viewportState.zoom;
          _p.pan = viewportState.pan;
          this.emit('pan zoom viewport');
          this.notify('viewport');
        }
        return this; // chaining
      },

      getFitViewport: function getFitViewport(elements, padding) {
        if (number$1(elements) && padding === undefined) {
          // elements is optional
          padding = elements;
          elements = undefined;
        }
        if (!this._private.panningEnabled || !this._private.zoomingEnabled) {
          return;
        }
        var bb;
        if (string(elements)) {
          var sel = elements;
          elements = this.$(sel);
        } else if (boundingBox(elements)) {
          // assume bb
          var bbe = elements;
          bb = {
            x1: bbe.x1,
            y1: bbe.y1,
            x2: bbe.x2,
            y2: bbe.y2
          };
          bb.w = bb.x2 - bb.x1;
          bb.h = bb.y2 - bb.y1;
        } else if (!elementOrCollection(elements)) {
          elements = this.mutableElements();
        }
        if (elementOrCollection(elements) && elements.empty()) {
          return;
        } // can't fit to nothing

        bb = bb || elements.boundingBox();
        var w = this.width();
        var h = this.height();
        var zoom;
        padding = number$1(padding) ? padding : 0;
        if (!isNaN(w) && !isNaN(h) && w > 0 && h > 0 && !isNaN(bb.w) && !isNaN(bb.h) && bb.w > 0 && bb.h > 0) {
          zoom = Math.min((w - 2 * padding) / bb.w, (h - 2 * padding) / bb.h);

          // crop zoom
          zoom = zoom > this._private.maxZoom ? this._private.maxZoom : zoom;
          zoom = zoom < this._private.minZoom ? this._private.minZoom : zoom;
          var pan = {
            // now pan to middle
            x: (w - zoom * (bb.x1 + bb.x2)) / 2,
            y: (h - zoom * (bb.y1 + bb.y2)) / 2
          };
          return {
            zoom: zoom,
            pan: pan
          };
        }
        return;
      },
      zoomRange: function zoomRange(min, max) {
        var _p = this._private;
        if (max == null) {
          var opts = min;
          min = opts.min;
          max = opts.max;
        }
        if (number$1(min) && number$1(max) && min <= max) {
          _p.minZoom = min;
          _p.maxZoom = max;
        } else if (number$1(min) && max === undefined && min <= _p.maxZoom) {
          _p.minZoom = min;
        } else if (number$1(max) && min === undefined && max >= _p.minZoom) {
          _p.maxZoom = max;
        }
        return this;
      },
      minZoom: function minZoom(zoom) {
        if (zoom === undefined) {
          return this._private.minZoom;
        } else {
          return this.zoomRange({
            min: zoom
          });
        }
      },
      maxZoom: function maxZoom(zoom) {
        if (zoom === undefined) {
          return this._private.maxZoom;
        } else {
          return this.zoomRange({
            max: zoom
          });
        }
      },
      getZoomedViewport: function getZoomedViewport(params) {
        var _p = this._private;
        var currentPan = _p.pan;
        var currentZoom = _p.zoom;
        var pos; // in rendered px
        var zoom;
        var bail = false;
        if (!_p.zoomingEnabled) {
          // zooming disabled
          bail = true;
        }
        if (number$1(params)) {
          // then set the zoom
          zoom = params;
        } else if (plainObject(params)) {
          // then zoom about a point
          zoom = params.level;
          if (params.position != null) {
            pos = modelToRenderedPosition(params.position, currentZoom, currentPan);
          } else if (params.renderedPosition != null) {
            pos = params.renderedPosition;
          }
          if (pos != null && !_p.panningEnabled) {
            // panning disabled
            bail = true;
          }
        }

        // crop zoom
        zoom = zoom > _p.maxZoom ? _p.maxZoom : zoom;
        zoom = zoom < _p.minZoom ? _p.minZoom : zoom;

        // can't zoom with invalid params
        if (bail || !number$1(zoom) || zoom === currentZoom || pos != null && (!number$1(pos.x) || !number$1(pos.y))) {
          return null;
        }
        if (pos != null) {
          // set zoom about position
          var pan1 = currentPan;
          var zoom1 = currentZoom;
          var zoom2 = zoom;
          var pan2 = {
            x: -zoom2 / zoom1 * (pos.x - pan1.x) + pos.x,
            y: -zoom2 / zoom1 * (pos.y - pan1.y) + pos.y
          };
          return {
            zoomed: true,
            panned: true,
            zoom: zoom2,
            pan: pan2
          };
        } else {
          // just set the zoom
          return {
            zoomed: true,
            panned: false,
            zoom: zoom,
            pan: currentPan
          };
        }
      },
      zoom: function zoom(params) {
        if (params === undefined) {
          // get
          return this._private.zoom;
        } else {
          // set
          var vp = this.getZoomedViewport(params);
          var _p = this._private;
          if (vp == null || !vp.zoomed) {
            return this;
          }
          _p.zoom = vp.zoom;
          if (vp.panned) {
            _p.pan.x = vp.pan.x;
            _p.pan.y = vp.pan.y;
          }
          this.emit('zoom' + (vp.panned ? ' pan' : '') + ' viewport');
          this.notify('viewport');
          return this; // chaining
        }
      },

      viewport: function viewport(opts) {
        var _p = this._private;
        var zoomDefd = true;
        var panDefd = true;
        var events = []; // to trigger
        var zoomFailed = false;
        var panFailed = false;
        if (!opts) {
          return this;
        }
        if (!number$1(opts.zoom)) {
          zoomDefd = false;
        }
        if (!plainObject(opts.pan)) {
          panDefd = false;
        }
        if (!zoomDefd && !panDefd) {
          return this;
        }
        if (zoomDefd) {
          var z = opts.zoom;
          if (z < _p.minZoom || z > _p.maxZoom || !_p.zoomingEnabled) {
            zoomFailed = true;
          } else {
            _p.zoom = z;
            events.push('zoom');
          }
        }
        if (panDefd && (!zoomFailed || !opts.cancelOnFailedZoom) && _p.panningEnabled) {
          var p = opts.pan;
          if (number$1(p.x)) {
            _p.pan.x = p.x;
            panFailed = false;
          }
          if (number$1(p.y)) {
            _p.pan.y = p.y;
            panFailed = false;
          }
          if (!panFailed) {
            events.push('pan');
          }
        }
        if (events.length > 0) {
          events.push('viewport');
          this.emit(events.join(' '));
          this.notify('viewport');
        }
        return this; // chaining
      },

      center: function center(elements) {
        var pan = this.getCenterPan(elements);
        if (pan) {
          this._private.pan = pan;
          this.emit('pan viewport');
          this.notify('viewport');
        }
        return this; // chaining
      },

      getCenterPan: function getCenterPan(elements, zoom) {
        if (!this._private.panningEnabled) {
          return;
        }
        if (string(elements)) {
          var selector = elements;
          elements = this.mutableElements().filter(selector);
        } else if (!elementOrCollection(elements)) {
          elements = this.mutableElements();
        }
        if (elements.length === 0) {
          return;
        } // can't centre pan to nothing

        var bb = elements.boundingBox();
        var w = this.width();
        var h = this.height();
        zoom = zoom === undefined ? this._private.zoom : zoom;
        var pan = {
          // middle
          x: (w - zoom * (bb.x1 + bb.x2)) / 2,
          y: (h - zoom * (bb.y1 + bb.y2)) / 2
        };
        return pan;
      },
      reset: function reset() {
        if (!this._private.panningEnabled || !this._private.zoomingEnabled) {
          return this;
        }
        this.viewport({
          pan: {
            x: 0,
            y: 0
          },
          zoom: 1
        });
        return this; // chaining
      },

      invalidateSize: function invalidateSize() {
        this._private.sizeCache = null;
      },
      size: function size() {
        var _p = this._private;
        var container = _p.container;
        var cy = this;
        return _p.sizeCache = _p.sizeCache || (container ? function () {
          var style = cy.window().getComputedStyle(container);
          var val = function val(name) {
            return parseFloat(style.getPropertyValue(name));
          };
          return {
            width: container.clientWidth - val('padding-left') - val('padding-right'),
            height: container.clientHeight - val('padding-top') - val('padding-bottom')
          };
        }() : {
          // fallback if no container (not 0 b/c can be used for dividing etc)
          width: 1,
          height: 1
        });
      },
      width: function width() {
        return this.size().width;
      },
      height: function height() {
        return this.size().height;
      },
      extent: function extent() {
        var pan = this._private.pan;
        var zoom = this._private.zoom;
        var rb = this.renderedExtent();
        var b = {
          x1: (rb.x1 - pan.x) / zoom,
          x2: (rb.x2 - pan.x) / zoom,
          y1: (rb.y1 - pan.y) / zoom,
          y2: (rb.y2 - pan.y) / zoom
        };
        b.w = b.x2 - b.x1;
        b.h = b.y2 - b.y1;
        return b;
      },
      renderedExtent: function renderedExtent() {
        var width = this.width();
        var height = this.height();
        return {
          x1: 0,
          y1: 0,
          x2: width,
          y2: height,
          w: width,
          h: height
        };
      },
      multiClickDebounceTime: function multiClickDebounceTime(_int) {
        if (_int) this._private.multiClickDebounceTime = _int;else return this._private.multiClickDebounceTime;
        return this; // chaining
      }
    };

    // aliases
    corefn$1.centre = corefn$1.center;

    // backwards compatibility
    corefn$1.autolockNodes = corefn$1.autolock;
    corefn$1.autoungrabifyNodes = corefn$1.autoungrabify;

    var fn = {
      data: define.data({
        field: 'data',
        bindingEvent: 'data',
        allowBinding: true,
        allowSetting: true,
        settingEvent: 'data',
        settingTriggersEvent: true,
        triggerFnName: 'trigger',
        allowGetting: true,
        updateStyle: true
      }),
      removeData: define.removeData({
        field: 'data',
        event: 'data',
        triggerFnName: 'trigger',
        triggerEvent: true,
        updateStyle: true
      }),
      scratch: define.data({
        field: 'scratch',
        bindingEvent: 'scratch',
        allowBinding: true,
        allowSetting: true,
        settingEvent: 'scratch',
        settingTriggersEvent: true,
        triggerFnName: 'trigger',
        allowGetting: true,
        updateStyle: true
      }),
      removeScratch: define.removeData({
        field: 'scratch',
        event: 'scratch',
        triggerFnName: 'trigger',
        triggerEvent: true,
        updateStyle: true
      })
    };

    // aliases
    fn.attr = fn.data;
    fn.removeAttr = fn.removeData;

    var Core = function Core(opts) {
      var cy = this;
      opts = extend$1({}, opts);
      var container = opts.container;

      // allow for passing a wrapped jquery object
      // e.g. cytoscape({ container: $('#cy') })
      if (container && !htmlElement(container) && htmlElement(container[0])) {
        container = container[0];
      }
      var reg = container ? container._cyreg : null; // e.g. already registered some info (e.g. readies) via jquery
      reg = reg || {};
      if (reg && reg.cy) {
        reg.cy.destroy();
        reg = {}; // old instance => replace reg completely
      }

      var readies = reg.readies = reg.readies || [];
      if (container) {
        container._cyreg = reg;
      } // make sure container assoc'd reg points to this cy
      reg.cy = cy;
      var head = _window !== undefined && container !== undefined && !opts.headless;
      var options = opts;
      options.layout = extend$1({
        name: head ? 'grid' : 'null'
      }, options.layout);
      options.renderer = extend$1({
        name: head ? 'canvas' : 'null'
      }, options.renderer);
      var defVal = function defVal(def, val, altVal) {
        if (val !== undefined) {
          return val;
        } else if (altVal !== undefined) {
          return altVal;
        } else {
          return def;
        }
      };
      var _p = this._private = {
        container: container,
        // html dom ele container
        ready: false,
        // whether ready has been triggered
        options: options,
        // cached options
        elements: new Collection(this),
        // elements in the graph
        listeners: [],
        // list of listeners
        aniEles: new Collection(this),
        // elements being animated
        data: options.data || {},
        // data for the core
        scratch: {},
        // scratch object for core
        layout: null,
        renderer: null,
        destroyed: false,
        // whether destroy was called
        notificationsEnabled: true,
        // whether notifications are sent to the renderer
        minZoom: 1e-50,
        maxZoom: 1e50,
        zoomingEnabled: defVal(true, options.zoomingEnabled),
        userZoomingEnabled: defVal(true, options.userZoomingEnabled),
        panningEnabled: defVal(true, options.panningEnabled),
        userPanningEnabled: defVal(true, options.userPanningEnabled),
        boxSelectionEnabled: defVal(true, options.boxSelectionEnabled),
        autolock: defVal(false, options.autolock, options.autolockNodes),
        autoungrabify: defVal(false, options.autoungrabify, options.autoungrabifyNodes),
        autounselectify: defVal(false, options.autounselectify),
        styleEnabled: options.styleEnabled === undefined ? head : options.styleEnabled,
        zoom: number$1(options.zoom) ? options.zoom : 1,
        pan: {
          x: plainObject(options.pan) && number$1(options.pan.x) ? options.pan.x : 0,
          y: plainObject(options.pan) && number$1(options.pan.y) ? options.pan.y : 0
        },
        animation: {
          // object for currently-running animations
          current: [],
          queue: []
        },
        hasCompoundNodes: false,
        multiClickDebounceTime: defVal(250, options.multiClickDebounceTime)
      };
      this.createEmitter();

      // set selection type
      this.selectionType(options.selectionType);

      // init zoom bounds
      this.zoomRange({
        min: options.minZoom,
        max: options.maxZoom
      });
      var loadExtData = function loadExtData(extData, next) {
        var anyIsPromise = extData.some(promise);
        if (anyIsPromise) {
          return Promise$1.all(extData).then(next); // load all data asynchronously, then exec rest of init
        } else {
          next(extData); // exec synchronously for convenience
        }
      };

      // start with the default stylesheet so we have something before loading an external stylesheet
      if (_p.styleEnabled) {
        cy.setStyle([]);
      }

      // create the renderer
      var rendererOptions = extend$1({}, options, options.renderer); // allow rendering hints in top level options
      cy.initRenderer(rendererOptions);
      var setElesAndLayout = function setElesAndLayout(elements, onload, ondone) {
        cy.notifications(false);

        // remove old elements
        var oldEles = cy.mutableElements();
        if (oldEles.length > 0) {
          oldEles.remove();
        }
        if (elements != null) {
          if (plainObject(elements) || array(elements)) {
            cy.add(elements);
          }
        }
        cy.one('layoutready', function (e) {
          cy.notifications(true);
          cy.emit(e); // we missed this event by turning notifications off, so pass it on

          cy.one('load', onload);
          cy.emitAndNotify('load');
        }).one('layoutstop', function () {
          cy.one('done', ondone);
          cy.emit('done');
        });
        var layoutOpts = extend$1({}, cy._private.options.layout);
        layoutOpts.eles = cy.elements();
        cy.layout(layoutOpts).run();
      };
      loadExtData([options.style, options.elements], function (thens) {
        var initStyle = thens[0];
        var initEles = thens[1];

        // init style
        if (_p.styleEnabled) {
          cy.style().append(initStyle);
        }

        // initial load
        setElesAndLayout(initEles, function () {
          // onready
          cy.startAnimationLoop();
          _p.ready = true;

          // if a ready callback is specified as an option, the bind it
          if (fn$6(options.ready)) {
            cy.on('ready', options.ready);
          }

          // bind all the ready handlers registered before creating this instance
          for (var i = 0; i < readies.length; i++) {
            var fn = readies[i];
            cy.on('ready', fn);
          }
          if (reg) {
            reg.readies = [];
          } // clear b/c we've bound them all and don't want to keep it around in case a new core uses the same div etc

          cy.emit('ready');
        }, options.done);
      });
    };
    var corefn = Core.prototype; // short alias

    extend$1(corefn, {
      instanceString: function instanceString() {
        return 'core';
      },
      isReady: function isReady() {
        return this._private.ready;
      },
      destroyed: function destroyed() {
        return this._private.destroyed;
      },
      ready: function ready(fn) {
        if (this.isReady()) {
          this.emitter().emit('ready', [], fn); // just calls fn as though triggered via ready event
        } else {
          this.on('ready', fn);
        }
        return this;
      },
      destroy: function destroy() {
        var cy = this;
        if (cy.destroyed()) return;
        cy.stopAnimationLoop();
        cy.destroyRenderer();
        this.emit('destroy');
        cy._private.destroyed = true;
        return cy;
      },
      hasElementWithId: function hasElementWithId(id) {
        return this._private.elements.hasElementWithId(id);
      },
      getElementById: function getElementById(id) {
        return this._private.elements.getElementById(id);
      },
      hasCompoundNodes: function hasCompoundNodes() {
        return this._private.hasCompoundNodes;
      },
      headless: function headless() {
        return this._private.renderer.isHeadless();
      },
      styleEnabled: function styleEnabled() {
        return this._private.styleEnabled;
      },
      addToPool: function addToPool(eles) {
        this._private.elements.merge(eles);
        return this; // chaining
      },

      removeFromPool: function removeFromPool(eles) {
        this._private.elements.unmerge(eles);
        return this;
      },
      container: function container() {
        return this._private.container || null;
      },
      window: function window() {
        var container = this._private.container;
        if (container == null) return _window;
        var ownerDocument = this._private.container.ownerDocument;
        if (ownerDocument === undefined || ownerDocument == null) {
          return _window;
        }
        return ownerDocument.defaultView || _window;
      },
      mount: function mount(container) {
        if (container == null) {
          return;
        }
        var cy = this;
        var _p = cy._private;
        var options = _p.options;
        if (!htmlElement(container) && htmlElement(container[0])) {
          container = container[0];
        }
        cy.stopAnimationLoop();
        cy.destroyRenderer();
        _p.container = container;
        _p.styleEnabled = true;
        cy.invalidateSize();
        cy.initRenderer(extend$1({}, options, options.renderer, {
          // allow custom renderer name to be re-used, otherwise use canvas
          name: options.renderer.name === 'null' ? 'canvas' : options.renderer.name
        }));
        cy.startAnimationLoop();
        cy.style(options.style);
        cy.emit('mount');
        return cy;
      },
      unmount: function unmount() {
        var cy = this;
        cy.stopAnimationLoop();
        cy.destroyRenderer();
        cy.initRenderer({
          name: 'null'
        });
        cy.emit('unmount');
        return cy;
      },
      options: function options() {
        return copy(this._private.options);
      },
      json: function json(obj) {
        var cy = this;
        var _p = cy._private;
        var eles = cy.mutableElements();
        var getFreshRef = function getFreshRef(ele) {
          return cy.getElementById(ele.id());
        };
        if (plainObject(obj)) {
          // set

          cy.startBatch();
          if (obj.elements) {
            var idInJson = {};
            var updateEles = function updateEles(jsons, gr) {
              var toAdd = [];
              var toMod = [];
              for (var i = 0; i < jsons.length; i++) {
                var json = jsons[i];
                if (!json.data.id) {
                  warn('cy.json() cannot handle elements without an ID attribute');
                  continue;
                }
                var id = '' + json.data.id; // id must be string
                var ele = cy.getElementById(id);
                idInJson[id] = true;
                if (ele.length !== 0) {
                  // existing element should be updated
                  toMod.push({
                    ele: ele,
                    json: json
                  });
                } else {
                  // otherwise should be added
                  if (gr) {
                    json.group = gr;
                    toAdd.push(json);
                  } else {
                    toAdd.push(json);
                  }
                }
              }
              cy.add(toAdd);
              for (var _i = 0; _i < toMod.length; _i++) {
                var _toMod$_i = toMod[_i],
                  _ele = _toMod$_i.ele,
                  _json = _toMod$_i.json;
                _ele.json(_json);
              }
            };
            if (array(obj.elements)) {
              // elements: []
              updateEles(obj.elements);
            } else {
              // elements: { nodes: [], edges: [] }
              var grs = ['nodes', 'edges'];
              for (var i = 0; i < grs.length; i++) {
                var gr = grs[i];
                var elements = obj.elements[gr];
                if (array(elements)) {
                  updateEles(elements, gr);
                }
              }
            }
            var parentsToRemove = cy.collection();
            eles.filter(function (ele) {
              return !idInJson[ele.id()];
            }).forEach(function (ele) {
              if (ele.isParent()) {
                parentsToRemove.merge(ele);
              } else {
                ele.remove();
              }
            });

            // so that children are not removed w/parent
            parentsToRemove.forEach(function (ele) {
              return ele.children().move({
                parent: null
              });
            });

            // intermediate parents may be moved by prior line, so make sure we remove by fresh refs
            parentsToRemove.forEach(function (ele) {
              return getFreshRef(ele).remove();
            });
          }
          if (obj.style) {
            cy.style(obj.style);
          }
          if (obj.zoom != null && obj.zoom !== _p.zoom) {
            cy.zoom(obj.zoom);
          }
          if (obj.pan) {
            if (obj.pan.x !== _p.pan.x || obj.pan.y !== _p.pan.y) {
              cy.pan(obj.pan);
            }
          }
          if (obj.data) {
            cy.data(obj.data);
          }
          var fields = ['minZoom', 'maxZoom', 'zoomingEnabled', 'userZoomingEnabled', 'panningEnabled', 'userPanningEnabled', 'boxSelectionEnabled', 'autolock', 'autoungrabify', 'autounselectify', 'multiClickDebounceTime'];
          for (var _i2 = 0; _i2 < fields.length; _i2++) {
            var f = fields[_i2];
            if (obj[f] != null) {
              cy[f](obj[f]);
            }
          }
          cy.endBatch();
          return this; // chaining
        } else {
          // get
          var flat = !!obj;
          var json = {};
          if (flat) {
            json.elements = this.elements().map(function (ele) {
              return ele.json();
            });
          } else {
            json.elements = {};
            eles.forEach(function (ele) {
              var group = ele.group();
              if (!json.elements[group]) {
                json.elements[group] = [];
              }
              json.elements[group].push(ele.json());
            });
          }
          if (this._private.styleEnabled) {
            json.style = cy.style().json();
          }
          json.data = copy(cy.data());
          var options = _p.options;
          json.zoomingEnabled = _p.zoomingEnabled;
          json.userZoomingEnabled = _p.userZoomingEnabled;
          json.zoom = _p.zoom;
          json.minZoom = _p.minZoom;
          json.maxZoom = _p.maxZoom;
          json.panningEnabled = _p.panningEnabled;
          json.userPanningEnabled = _p.userPanningEnabled;
          json.pan = copy(_p.pan);
          json.boxSelectionEnabled = _p.boxSelectionEnabled;
          json.renderer = copy(options.renderer);
          json.hideEdgesOnViewport = options.hideEdgesOnViewport;
          json.textureOnViewport = options.textureOnViewport;
          json.wheelSensitivity = options.wheelSensitivity;
          json.motionBlur = options.motionBlur;
          json.multiClickDebounceTime = options.multiClickDebounceTime;
          return json;
        }
      }
    });
    corefn.$id = corefn.getElementById;
    [corefn$9, corefn$8, elesfn, corefn$7, corefn$6, corefn$5, corefn$4, corefn$3, corefn$2, corefn$1, fn].forEach(function (props) {
      extend$1(corefn, props);
    });

    /* eslint-disable no-unused-vars */
    var defaults$7 = {
      fit: true,
      // whether to fit the viewport to the graph
      directed: false,
      // whether the tree is directed downwards (or edges can point in any direction if false)
      padding: 30,
      // padding on fit
      circle: false,
      // put depths in concentric circles if true, put depths top down if false
      grid: false,
      // whether to create an even grid into which the DAG is placed (circle:false only)
      spacingFactor: 1.75,
      // positive spacing factor, larger => more space between nodes (N.B. n/a if causes overlap)
      boundingBox: undefined,
      // constrain layout bounds; { x1, y1, x2, y2 } or { x1, y1, w, h }
      avoidOverlap: true,
      // prevents node overlap, may overflow boundingBox if not enough space
      nodeDimensionsIncludeLabels: false,
      // Excludes the label when calculating node bounding boxes for the layout algorithm
      roots: undefined,
      // the roots of the trees
      depthSort: undefined,
      // a sorting function to order nodes at equal depth. e.g. function(a, b){ return a.data('weight') - b.data('weight') }
      animate: false,
      // whether to transition the node positions
      animationDuration: 500,
      // duration of animation in ms if enabled
      animationEasing: undefined,
      // easing of animation if enabled,
      animateFilter: function animateFilter(node, i) {
        return true;
      },
      // a function that determines whether the node should be animated.  All nodes animated by default on animate enabled.  Non-animated nodes are positioned immediately when the layout starts
      ready: undefined,
      // callback on layoutready
      stop: undefined,
      // callback on layoutstop
      transform: function transform(node, position) {
        return position;
      } // transform a given node position. Useful for changing flow direction in discrete layouts
    };

    var deprecatedOptionDefaults = {
      maximal: false,
      // whether to shift nodes down their natural BFS depths in order to avoid upwards edges (DAGS only); setting acyclic to true sets maximal to true also
      acyclic: false // whether the tree is acyclic and thus a node could be shifted (due to the maximal option) multiple times without causing an infinite loop; setting to true sets maximal to true also; if you are uncertain whether a tree is acyclic, set to false to avoid potential infinite loops
    };

    /* eslint-enable */

    var getInfo = function getInfo(ele) {
      return ele.scratch('breadthfirst');
    };
    var setInfo = function setInfo(ele, obj) {
      return ele.scratch('breadthfirst', obj);
    };
    function BreadthFirstLayout(options) {
      this.options = extend$1({}, defaults$7, deprecatedOptionDefaults, options);
    }
    BreadthFirstLayout.prototype.run = function () {
      var params = this.options;
      var options = params;
      var cy = params.cy;
      var eles = options.eles;
      var nodes = eles.nodes().filter(function (n) {
        return !n.isParent();
      });
      var graph = eles;
      var directed = options.directed;
      var maximal = options.acyclic || options.maximal || options.maximalAdjustments > 0; // maximalAdjustments for compat. w/ old code; also, setting acyclic to true sets maximal to true

      var bb = makeBoundingBox(options.boundingBox ? options.boundingBox : {
        x1: 0,
        y1: 0,
        w: cy.width(),
        h: cy.height()
      });
      var roots;
      if (elementOrCollection(options.roots)) {
        roots = options.roots;
      } else if (array(options.roots)) {
        var rootsArray = [];
        for (var i = 0; i < options.roots.length; i++) {
          var id = options.roots[i];
          var ele = cy.getElementById(id);
          rootsArray.push(ele);
        }
        roots = cy.collection(rootsArray);
      } else if (string(options.roots)) {
        roots = cy.$(options.roots);
      } else {
        if (directed) {
          roots = nodes.roots();
        } else {
          var components = eles.components();
          roots = cy.collection();
          var _loop = function _loop(_i) {
            var comp = components[_i];
            var maxDegree = comp.maxDegree(false);
            var compRoots = comp.filter(function (ele) {
              return ele.degree(false) === maxDegree;
            });
            roots = roots.add(compRoots);
          };
          for (var _i = 0; _i < components.length; _i++) {
            _loop(_i);
          }
        }
      }
      var depths = [];
      var foundByBfs = {};
      var addToDepth = function addToDepth(ele, d) {
        if (depths[d] == null) {
          depths[d] = [];
        }
        var i = depths[d].length;
        depths[d].push(ele);
        setInfo(ele, {
          index: i,
          depth: d
        });
      };
      var changeDepth = function changeDepth(ele, newDepth) {
        var _getInfo = getInfo(ele),
          depth = _getInfo.depth,
          index = _getInfo.index;
        depths[depth][index] = null;
        addToDepth(ele, newDepth);
      };

      // find the depths of the nodes
      graph.bfs({
        roots: roots,
        directed: options.directed,
        visit: function visit(node, edge, pNode, i, depth) {
          var ele = node[0];
          var id = ele.id();
          addToDepth(ele, depth);
          foundByBfs[id] = true;
        }
      });

      // check for nodes not found by bfs
      var orphanNodes = [];
      for (var _i2 = 0; _i2 < nodes.length; _i2++) {
        var _ele = nodes[_i2];
        if (foundByBfs[_ele.id()]) {
          continue;
        } else {
          orphanNodes.push(_ele);
        }
      }

      // assign the nodes a depth and index

      var assignDepthsAt = function assignDepthsAt(i) {
        var eles = depths[i];
        for (var j = 0; j < eles.length; j++) {
          var _ele2 = eles[j];
          if (_ele2 == null) {
            eles.splice(j, 1);
            j--;
            continue;
          }
          setInfo(_ele2, {
            depth: i,
            index: j
          });
        }
      };
      var assignDepths = function assignDepths() {
        for (var _i3 = 0; _i3 < depths.length; _i3++) {
          assignDepthsAt(_i3);
        }
      };
      var adjustMaximally = function adjustMaximally(ele, shifted) {
        var eInfo = getInfo(ele);
        var incomers = ele.incomers().filter(function (el) {
          return el.isNode() && eles.has(el);
        });
        var maxDepth = -1;
        var id = ele.id();
        for (var k = 0; k < incomers.length; k++) {
          var incmr = incomers[k];
          var iInfo = getInfo(incmr);
          maxDepth = Math.max(maxDepth, iInfo.depth);
        }
        if (eInfo.depth <= maxDepth) {
          if (!options.acyclic && shifted[id]) {
            return null;
          }
          var newDepth = maxDepth + 1;
          changeDepth(ele, newDepth);
          shifted[id] = newDepth;
          return true;
        }
        return false;
      };

      // for the directed case, try to make the edges all go down (i.e. depth i => depth i + 1)
      if (directed && maximal) {
        var Q = [];
        var shifted = {};
        var enqueue = function enqueue(n) {
          return Q.push(n);
        };
        var dequeue = function dequeue() {
          return Q.shift();
        };
        nodes.forEach(function (n) {
          return Q.push(n);
        });
        while (Q.length > 0) {
          var _ele3 = dequeue();
          var didShift = adjustMaximally(_ele3, shifted);
          if (didShift) {
            _ele3.outgoers().filter(function (el) {
              return el.isNode() && eles.has(el);
            }).forEach(enqueue);
          } else if (didShift === null) {
            warn('Detected double maximal shift for node `' + _ele3.id() + '`.  Bailing maximal adjustment due to cycle.  Use `options.maximal: true` only on DAGs.');
            break; // exit on failure
          }
        }
      }

      assignDepths(); // clear holes

      // find min distance we need to leave between nodes
      var minDistance = 0;
      if (options.avoidOverlap) {
        for (var _i4 = 0; _i4 < nodes.length; _i4++) {
          var n = nodes[_i4];
          var nbb = n.layoutDimensions(options);
          var w = nbb.w;
          var h = nbb.h;
          minDistance = Math.max(minDistance, w, h);
        }
      }

      // get the weighted percent for an element based on its connectivity to other levels
      var cachedWeightedPercent = {};
      var getWeightedPercent = function getWeightedPercent(ele) {
        if (cachedWeightedPercent[ele.id()]) {
          return cachedWeightedPercent[ele.id()];
        }
        var eleDepth = getInfo(ele).depth;
        var neighbors = ele.neighborhood();
        var percent = 0;
        var samples = 0;
        for (var _i5 = 0; _i5 < neighbors.length; _i5++) {
          var neighbor = neighbors[_i5];
          if (neighbor.isEdge() || neighbor.isParent() || !nodes.has(neighbor)) {
            continue;
          }
          var bf = getInfo(neighbor);
          if (bf == null) {
            continue;
          }
          var index = bf.index;
          var depth = bf.depth;

          // unassigned neighbours shouldn't affect the ordering
          if (index == null || depth == null) {
            continue;
          }
          var nDepth = depths[depth].length;
          if (depth < eleDepth) {
            // only get influenced by elements above
            percent += index / nDepth;
            samples++;
          }
        }
        samples = Math.max(1, samples);
        percent = percent / samples;
        if (samples === 0) {
          // put lone nodes at the start
          percent = 0;
        }
        cachedWeightedPercent[ele.id()] = percent;
        return percent;
      };

      // rearrange the indices in each depth level based on connectivity

      var sortFn = function sortFn(a, b) {
        var apct = getWeightedPercent(a);
        var bpct = getWeightedPercent(b);
        var diff = apct - bpct;
        if (diff === 0) {
          return ascending(a.id(), b.id()); // make sure sort doesn't have don't-care comparisons
        } else {
          return diff;
        }
      };
      if (options.depthSort !== undefined) {
        sortFn = options.depthSort;
      }

      // sort each level to make connected nodes closer
      for (var _i6 = 0; _i6 < depths.length; _i6++) {
        depths[_i6].sort(sortFn);
        assignDepthsAt(_i6);
      }

      // assign orphan nodes to a new top-level depth
      var orphanDepth = [];
      for (var _i7 = 0; _i7 < orphanNodes.length; _i7++) {
        orphanDepth.push(orphanNodes[_i7]);
      }
      depths.unshift(orphanDepth);
      assignDepths();
      var biggestDepthSize = 0;
      for (var _i8 = 0; _i8 < depths.length; _i8++) {
        biggestDepthSize = Math.max(depths[_i8].length, biggestDepthSize);
      }
      var center = {
        x: bb.x1 + bb.w / 2,
        y: bb.x1 + bb.h / 2
      };
      var maxDepthSize = depths.reduce(function (max, eles) {
        return Math.max(max, eles.length);
      }, 0);
      var getPosition = function getPosition(ele) {
        var _getInfo2 = getInfo(ele),
          depth = _getInfo2.depth,
          index = _getInfo2.index;
        var depthSize = depths[depth].length;
        var distanceX = Math.max(bb.w / ((options.grid ? maxDepthSize : depthSize) + 1), minDistance);
        var distanceY = Math.max(bb.h / (depths.length + 1), minDistance);
        var radiusStepSize = Math.min(bb.w / 2 / depths.length, bb.h / 2 / depths.length);
        radiusStepSize = Math.max(radiusStepSize, minDistance);
        if (!options.circle) {
          var epos = {
            x: center.x + (index + 1 - (depthSize + 1) / 2) * distanceX,
            y: (depth + 1) * distanceY
          };
          return epos;
        } else {
          var radius = radiusStepSize * depth + radiusStepSize - (depths.length > 0 && depths[0].length <= 3 ? radiusStepSize / 2 : 0);
          var theta = 2 * Math.PI / depths[depth].length * index;
          if (depth === 0 && depths[0].length === 1) {
            radius = 1;
          }
          return {
            x: center.x + radius * Math.cos(theta),
            y: center.y + radius * Math.sin(theta)
          };
        }
      };
      eles.nodes().layoutPositions(this, options, getPosition);
      return this; // chaining
    };

    var defaults$6 = {
      fit: true,
      // whether to fit the viewport to the graph
      padding: 30,
      // the padding on fit
      boundingBox: undefined,
      // constrain layout bounds; { x1, y1, x2, y2 } or { x1, y1, w, h }
      avoidOverlap: true,
      // prevents node overlap, may overflow boundingBox and radius if not enough space
      nodeDimensionsIncludeLabels: false,
      // Excludes the label when calculating node bounding boxes for the layout algorithm
      spacingFactor: undefined,
      // Applies a multiplicative factor (>0) to expand or compress the overall area that the nodes take up
      radius: undefined,
      // the radius of the circle
      startAngle: 3 / 2 * Math.PI,
      // where nodes start in radians
      sweep: undefined,
      // how many radians should be between the first and last node (defaults to full circle)
      clockwise: true,
      // whether the layout should go clockwise (true) or counterclockwise/anticlockwise (false)
      sort: undefined,
      // a sorting function to order the nodes; e.g. function(a, b){ return a.data('weight') - b.data('weight') }
      animate: false,
      // whether to transition the node positions
      animationDuration: 500,
      // duration of animation in ms if enabled
      animationEasing: undefined,
      // easing of animation if enabled
      animateFilter: function animateFilter(node, i) {
        return true;
      },
      // a function that determines whether the node should be animated.  All nodes animated by default on animate enabled.  Non-animated nodes are positioned immediately when the layout starts
      ready: undefined,
      // callback on layoutready
      stop: undefined,
      // callback on layoutstop
      transform: function transform(node, position) {
        return position;
      } // transform a given node position. Useful for changing flow direction in discrete layouts 
    };

    function CircleLayout(options) {
      this.options = extend$1({}, defaults$6, options);
    }
    CircleLayout.prototype.run = function () {
      var params = this.options;
      var options = params;
      var cy = params.cy;
      var eles = options.eles;
      var clockwise = options.counterclockwise !== undefined ? !options.counterclockwise : options.clockwise;
      var nodes = eles.nodes().not(':parent');
      if (options.sort) {
        nodes = nodes.sort(options.sort);
      }
      var bb = makeBoundingBox(options.boundingBox ? options.boundingBox : {
        x1: 0,
        y1: 0,
        w: cy.width(),
        h: cy.height()
      });
      var center = {
        x: bb.x1 + bb.w / 2,
        y: bb.y1 + bb.h / 2
      };
      var sweep = options.sweep === undefined ? 2 * Math.PI - 2 * Math.PI / nodes.length : options.sweep;
      var dTheta = sweep / Math.max(1, nodes.length - 1);
      var r;
      var minDistance = 0;
      for (var i = 0; i < nodes.length; i++) {
        var n = nodes[i];
        var nbb = n.layoutDimensions(options);
        var w = nbb.w;
        var h = nbb.h;
        minDistance = Math.max(minDistance, w, h);
      }
      if (number$1(options.radius)) {
        r = options.radius;
      } else if (nodes.length <= 1) {
        r = 0;
      } else {
        r = Math.min(bb.h, bb.w) / 2 - minDistance;
      }

      // calculate the radius
      if (nodes.length > 1 && options.avoidOverlap) {
        // but only if more than one node (can't overlap)
        minDistance *= 1.75; // just to have some nice spacing

        var dcos = Math.cos(dTheta) - Math.cos(0);
        var dsin = Math.sin(dTheta) - Math.sin(0);
        var rMin = Math.sqrt(minDistance * minDistance / (dcos * dcos + dsin * dsin)); // s.t. no nodes overlapping
        r = Math.max(rMin, r);
      }
      var getPos = function getPos(ele, i) {
        var theta = options.startAngle + i * dTheta * (clockwise ? 1 : -1);
        var rx = r * Math.cos(theta);
        var ry = r * Math.sin(theta);
        var pos = {
          x: center.x + rx,
          y: center.y + ry
        };
        return pos;
      };
      eles.nodes().layoutPositions(this, options, getPos);
      return this; // chaining
    };

    var defaults$5 = {
      fit: true,
      // whether to fit the viewport to the graph
      padding: 30,
      // the padding on fit
      startAngle: 3 / 2 * Math.PI,
      // where nodes start in radians
      sweep: undefined,
      // how many radians should be between the first and last node (defaults to full circle)
      clockwise: true,
      // whether the layout should go clockwise (true) or counterclockwise/anticlockwise (false)
      equidistant: false,
      // whether levels have an equal radial distance betwen them, may cause bounding box overflow
      minNodeSpacing: 10,
      // min spacing between outside of nodes (used for radius adjustment)
      boundingBox: undefined,
      // constrain layout bounds; { x1, y1, x2, y2 } or { x1, y1, w, h }
      avoidOverlap: true,
      // prevents node overlap, may overflow boundingBox if not enough space
      nodeDimensionsIncludeLabels: false,
      // Excludes the label when calculating node bounding boxes for the layout algorithm
      height: undefined,
      // height of layout area (overrides container height)
      width: undefined,
      // width of layout area (overrides container width)
      spacingFactor: undefined,
      // Applies a multiplicative factor (>0) to expand or compress the overall area that the nodes take up
      concentric: function concentric(node) {
        // returns numeric value for each node, placing higher nodes in levels towards the centre
        return node.degree();
      },
      levelWidth: function levelWidth(nodes) {
        // the variation of concentric values in each level
        return nodes.maxDegree() / 4;
      },
      animate: false,
      // whether to transition the node positions
      animationDuration: 500,
      // duration of animation in ms if enabled
      animationEasing: undefined,
      // easing of animation if enabled
      animateFilter: function animateFilter(node, i) {
        return true;
      },
      // a function that determines whether the node should be animated.  All nodes animated by default on animate enabled.  Non-animated nodes are positioned immediately when the layout starts
      ready: undefined,
      // callback on layoutready
      stop: undefined,
      // callback on layoutstop
      transform: function transform(node, position) {
        return position;
      } // transform a given node position. Useful for changing flow direction in discrete layouts
    };

    function ConcentricLayout(options) {
      this.options = extend$1({}, defaults$5, options);
    }
    ConcentricLayout.prototype.run = function () {
      var params = this.options;
      var options = params;
      var clockwise = options.counterclockwise !== undefined ? !options.counterclockwise : options.clockwise;
      var cy = params.cy;
      var eles = options.eles;
      var nodes = eles.nodes().not(':parent');
      var bb = makeBoundingBox(options.boundingBox ? options.boundingBox : {
        x1: 0,
        y1: 0,
        w: cy.width(),
        h: cy.height()
      });
      var center = {
        x: bb.x1 + bb.w / 2,
        y: bb.y1 + bb.h / 2
      };
      var nodeValues = []; // { node, value }
      var maxNodeSize = 0;
      for (var i = 0; i < nodes.length; i++) {
        var node = nodes[i];
        var value = void 0;

        // calculate the node value
        value = options.concentric(node);
        nodeValues.push({
          value: value,
          node: node
        });

        // for style mapping
        node._private.scratch.concentric = value;
      }

      // in case we used the `concentric` in style
      nodes.updateStyle();

      // calculate max size now based on potentially updated mappers
      for (var _i = 0; _i < nodes.length; _i++) {
        var _node = nodes[_i];
        var nbb = _node.layoutDimensions(options);
        maxNodeSize = Math.max(maxNodeSize, nbb.w, nbb.h);
      }

      // sort node values in descreasing order
      nodeValues.sort(function (a, b) {
        return b.value - a.value;
      });
      var levelWidth = options.levelWidth(nodes);

      // put the values into levels
      var levels = [[]];
      var currentLevel = levels[0];
      for (var _i2 = 0; _i2 < nodeValues.length; _i2++) {
        var val = nodeValues[_i2];
        if (currentLevel.length > 0) {
          var diff = Math.abs(currentLevel[0].value - val.value);
          if (diff >= levelWidth) {
            currentLevel = [];
            levels.push(currentLevel);
          }
        }
        currentLevel.push(val);
      }

      // create positions from levels

      var minDist = maxNodeSize + options.minNodeSpacing; // min dist between nodes

      if (!options.avoidOverlap) {
        // then strictly constrain to bb
        var firstLvlHasMulti = levels.length > 0 && levels[0].length > 1;
        var maxR = Math.min(bb.w, bb.h) / 2 - minDist;
        var rStep = maxR / (levels.length + firstLvlHasMulti ? 1 : 0);
        minDist = Math.min(minDist, rStep);
      }

      // find the metrics for each level
      var r = 0;
      for (var _i3 = 0; _i3 < levels.length; _i3++) {
        var level = levels[_i3];
        var sweep = options.sweep === undefined ? 2 * Math.PI - 2 * Math.PI / level.length : options.sweep;
        var dTheta = level.dTheta = sweep / Math.max(1, level.length - 1);

        // calculate the radius
        if (level.length > 1 && options.avoidOverlap) {
          // but only if more than one node (can't overlap)
          var dcos = Math.cos(dTheta) - Math.cos(0);
          var dsin = Math.sin(dTheta) - Math.sin(0);
          var rMin = Math.sqrt(minDist * minDist / (dcos * dcos + dsin * dsin)); // s.t. no nodes overlapping

          r = Math.max(rMin, r);
        }
        level.r = r;
        r += minDist;
      }
      if (options.equidistant) {
        var rDeltaMax = 0;
        var _r = 0;
        for (var _i4 = 0; _i4 < levels.length; _i4++) {
          var _level = levels[_i4];
          var rDelta = _level.r - _r;
          rDeltaMax = Math.max(rDeltaMax, rDelta);
        }
        _r = 0;
        for (var _i5 = 0; _i5 < levels.length; _i5++) {
          var _level2 = levels[_i5];
          if (_i5 === 0) {
            _r = _level2.r;
          }
          _level2.r = _r;
          _r += rDeltaMax;
        }
      }

      // calculate the node positions
      var pos = {}; // id => position
      for (var _i6 = 0; _i6 < levels.length; _i6++) {
        var _level3 = levels[_i6];
        var _dTheta = _level3.dTheta;
        var _r2 = _level3.r;
        for (var j = 0; j < _level3.length; j++) {
          var _val = _level3[j];
          var theta = options.startAngle + (clockwise ? 1 : -1) * _dTheta * j;
          var p = {
            x: center.x + _r2 * Math.cos(theta),
            y: center.y + _r2 * Math.sin(theta)
          };
          pos[_val.node.id()] = p;
        }
      }

      // position the nodes
      eles.nodes().layoutPositions(this, options, function (ele) {
        var id = ele.id();
        return pos[id];
      });
      return this; // chaining
    };

    /*
    The CoSE layout was written by Gerardo Huck.
    https://www.linkedin.com/in/gerardohuck/

    Based on the following article:
    http://dl.acm.org/citation.cfm?id=1498047

    Modifications tracked on Github.
    */
    var DEBUG;

    /**
     * @brief :  default layout options
     */
    var defaults$4 = {
      // Called on `layoutready`
      ready: function ready() {},
      // Called on `layoutstop`
      stop: function stop() {},
      // Whether to animate while running the layout
      // true : Animate continuously as the layout is running
      // false : Just show the end result
      // 'end' : Animate with the end result, from the initial positions to the end positions
      animate: true,
      // Easing of the animation for animate:'end'
      animationEasing: undefined,
      // The duration of the animation for animate:'end'
      animationDuration: undefined,
      // A function that determines whether the node should be animated
      // All nodes animated by default on animate enabled
      // Non-animated nodes are positioned immediately when the layout starts
      animateFilter: function animateFilter(node, i) {
        return true;
      },
      // The layout animates only after this many milliseconds for animate:true
      // (prevents flashing on fast runs)
      animationThreshold: 250,
      // Number of iterations between consecutive screen positions update
      refresh: 20,
      // Whether to fit the network view after when done
      fit: true,
      // Padding on fit
      padding: 30,
      // Constrain layout bounds; { x1, y1, x2, y2 } or { x1, y1, w, h }
      boundingBox: undefined,
      // Excludes the label when calculating node bounding boxes for the layout algorithm
      nodeDimensionsIncludeLabels: false,
      // Randomize the initial positions of the nodes (true) or use existing positions (false)
      randomize: false,
      // Extra spacing between components in non-compound graphs
      componentSpacing: 40,
      // Node repulsion (non overlapping) multiplier
      nodeRepulsion: function nodeRepulsion(node) {
        return 2048;
      },
      // Node repulsion (overlapping) multiplier
      nodeOverlap: 4,
      // Ideal edge (non nested) length
      idealEdgeLength: function idealEdgeLength(edge) {
        return 32;
      },
      // Divisor to compute edge forces
      edgeElasticity: function edgeElasticity(edge) {
        return 32;
      },
      // Nesting factor (multiplier) to compute ideal edge length for nested edges
      nestingFactor: 1.2,
      // Gravity force (constant)
      gravity: 1,
      // Maximum number of iterations to perform
      numIter: 1000,
      // Initial temperature (maximum node displacement)
      initialTemp: 1000,
      // Cooling factor (how the temperature is reduced between consecutive iterations
      coolingFactor: 0.99,
      // Lower temperature threshold (below this point the layout will end)
      minTemp: 1.0
    };

    /**
     * @brief       : constructor
     * @arg options : object containing layout options
     */
    function CoseLayout(options) {
      this.options = extend$1({}, defaults$4, options);
      this.options.layout = this;

      // Exclude any edge that has a source or target node that is not in the set of passed-in nodes
      var nodes = this.options.eles.nodes();
      var edges = this.options.eles.edges();
      var notEdges = edges.filter(function (e) {
        var sourceId = e.source().data('id');
        var targetId = e.target().data('id');
        var hasSource = nodes.some(function (n) {
          return n.data('id') === sourceId;
        });
        var hasTarget = nodes.some(function (n) {
          return n.data('id') === targetId;
        });
        return !hasSource || !hasTarget;
      });
      this.options.eles = this.options.eles.not(notEdges);
    }

    /**
     * @brief : runs the layout
     */
    CoseLayout.prototype.run = function () {
      var options = this.options;
      var cy = options.cy;
      var layout = this;
      layout.stopped = false;
      if (options.animate === true || options.animate === false) {
        layout.emit({
          type: 'layoutstart',
          layout: layout
        });
      }

      // Set DEBUG - Global variable
      if (true === options.debug) {
        DEBUG = true;
      } else {
        DEBUG = false;
      }

      // Initialize layout info
      var layoutInfo = createLayoutInfo(cy, layout, options);

      // Show LayoutInfo contents if debugging
      if (DEBUG) {
        printLayoutInfo(layoutInfo);
      }

      // If required, randomize node positions
      if (options.randomize) {
        randomizePositions(layoutInfo);
      }
      var startTime = performanceNow();
      var refresh = function refresh() {
        refreshPositions(layoutInfo, cy, options);

        // Fit the graph if necessary
        if (true === options.fit) {
          cy.fit(options.padding);
        }
      };
      var mainLoop = function mainLoop(i) {
        if (layout.stopped || i >= options.numIter) {
          // logDebug("Layout manually stopped. Stopping computation in step " + i);
          return false;
        }

        // Do one step in the phisical simulation
        step(layoutInfo, options);

        // Update temperature
        layoutInfo.temperature = layoutInfo.temperature * options.coolingFactor;
        // logDebug("New temperature: " + layoutInfo.temperature);

        if (layoutInfo.temperature < options.minTemp) {
          // logDebug("Temperature drop below minimum threshold. Stopping computation in step " + i);
          return false;
        }
        return true;
      };
      var done = function done() {
        if (options.animate === true || options.animate === false) {
          refresh();

          // Layout has finished
          layout.one('layoutstop', options.stop);
          layout.emit({
            type: 'layoutstop',
            layout: layout
          });
        } else {
          var nodes = options.eles.nodes();
          var getScaledPos = getScaleInBoundsFn(layoutInfo, options, nodes);
          nodes.layoutPositions(layout, options, getScaledPos);
        }
      };
      var i = 0;
      var loopRet = true;
      if (options.animate === true) {
        var frame = function frame() {
          var f = 0;
          while (loopRet && f < options.refresh) {
            loopRet = mainLoop(i);
            i++;
            f++;
          }
          if (!loopRet) {
            // it's done
            separateComponents(layoutInfo, options);
            done();
          } else {
            var now = performanceNow();
            if (now - startTime >= options.animationThreshold) {
              refresh();
            }
            requestAnimationFrame$1(frame);
          }
        };
        frame();
      } else {
        while (loopRet) {
          loopRet = mainLoop(i);
          i++;
        }
        separateComponents(layoutInfo, options);
        done();
      }
      return this; // chaining
    };

    /**
     * @brief : called on continuous layouts to stop them before they finish
     */
    CoseLayout.prototype.stop = function () {
      this.stopped = true;
      if (this.thread) {
        this.thread.stop();
      }
      this.emit('layoutstop');
      return this; // chaining
    };

    CoseLayout.prototype.destroy = function () {
      if (this.thread) {
        this.thread.stop();
      }
      return this; // chaining
    };

    /**
     * @brief     : Creates an object which is contains all the data
     *              used in the layout process
     * @arg cy    : cytoscape.js object
     * @return    : layoutInfo object initialized
     */
    var createLayoutInfo = function createLayoutInfo(cy, layout, options) {
      // Shortcut
      var edges = options.eles.edges();
      var nodes = options.eles.nodes();
      var bb = makeBoundingBox(options.boundingBox ? options.boundingBox : {
        x1: 0,
        y1: 0,
        w: cy.width(),
        h: cy.height()
      });
      var layoutInfo = {
        isCompound: cy.hasCompoundNodes(),
        layoutNodes: [],
        idToIndex: {},
        nodeSize: nodes.size(),
        graphSet: [],
        indexToGraph: [],
        layoutEdges: [],
        edgeSize: edges.size(),
        temperature: options.initialTemp,
        clientWidth: bb.w,
        clientHeight: bb.h,
        boundingBox: bb
      };
      var components = options.eles.components();
      var id2cmptId = {};
      for (var i = 0; i < components.length; i++) {
        var component = components[i];
        for (var j = 0; j < component.length; j++) {
          var node = component[j];
          id2cmptId[node.id()] = i;
        }
      }

      // Iterate over all nodes, creating layout nodes
      for (var i = 0; i < layoutInfo.nodeSize; i++) {
        var n = nodes[i];
        var nbb = n.layoutDimensions(options);
        var tempNode = {};
        tempNode.isLocked = n.locked();
        tempNode.id = n.data('id');
        tempNode.parentId = n.data('parent');
        tempNode.cmptId = id2cmptId[n.id()];
        tempNode.children = [];
        tempNode.positionX = n.position('x');
        tempNode.positionY = n.position('y');
        tempNode.offsetX = 0;
        tempNode.offsetY = 0;
        tempNode.height = nbb.w;
        tempNode.width = nbb.h;
        tempNode.maxX = tempNode.positionX + tempNode.width / 2;
        tempNode.minX = tempNode.positionX - tempNode.width / 2;
        tempNode.maxY = tempNode.positionY + tempNode.height / 2;
        tempNode.minY = tempNode.positionY - tempNode.height / 2;
        tempNode.padLeft = parseFloat(n.style('padding'));
        tempNode.padRight = parseFloat(n.style('padding'));
        tempNode.padTop = parseFloat(n.style('padding'));
        tempNode.padBottom = parseFloat(n.style('padding'));

        // forces
        tempNode.nodeRepulsion = fn$6(options.nodeRepulsion) ? options.nodeRepulsion(n) : options.nodeRepulsion;

        // Add new node
        layoutInfo.layoutNodes.push(tempNode);
        // Add entry to id-index map
        layoutInfo.idToIndex[tempNode.id] = i;
      }

      // Inline implementation of a queue, used for traversing the graph in BFS order
      var queue = [];
      var start = 0; // Points to the start the queue
      var end = -1; // Points to the end of the queue

      var tempGraph = [];

      // Second pass to add child information and
      // initialize queue for hierarchical traversal
      for (var i = 0; i < layoutInfo.nodeSize; i++) {
        var n = layoutInfo.layoutNodes[i];
        var p_id = n.parentId;
        // Check if node n has a parent node
        if (null != p_id) {
          // Add node Id to parent's list of children
          layoutInfo.layoutNodes[layoutInfo.idToIndex[p_id]].children.push(n.id);
        } else {
          // If a node doesn't have a parent, then it's in the root graph
          queue[++end] = n.id;
          tempGraph.push(n.id);
        }
      }

      // Add root graph to graphSet
      layoutInfo.graphSet.push(tempGraph);

      // Traverse the graph, level by level,
      while (start <= end) {
        // Get the node to visit and remove it from queue
        var node_id = queue[start++];
        var node_ix = layoutInfo.idToIndex[node_id];
        var node = layoutInfo.layoutNodes[node_ix];
        var children = node.children;
        if (children.length > 0) {
          // Add children nodes as a new graph to graph set
          layoutInfo.graphSet.push(children);
          // Add children to que queue to be visited
          for (var i = 0; i < children.length; i++) {
            queue[++end] = children[i];
          }
        }
      }

      // Create indexToGraph map
      for (var i = 0; i < layoutInfo.graphSet.length; i++) {
        var graph = layoutInfo.graphSet[i];
        for (var j = 0; j < graph.length; j++) {
          var index = layoutInfo.idToIndex[graph[j]];
          layoutInfo.indexToGraph[index] = i;
        }
      }

      // Iterate over all edges, creating Layout Edges
      for (var i = 0; i < layoutInfo.edgeSize; i++) {
        var e = edges[i];
        var tempEdge = {};
        tempEdge.id = e.data('id');
        tempEdge.sourceId = e.data('source');
        tempEdge.targetId = e.data('target');

        // Compute ideal length
        var idealLength = fn$6(options.idealEdgeLength) ? options.idealEdgeLength(e) : options.idealEdgeLength;
        var elasticity = fn$6(options.edgeElasticity) ? options.edgeElasticity(e) : options.edgeElasticity;

        // Check if it's an inter graph edge
        var sourceIx = layoutInfo.idToIndex[tempEdge.sourceId];
        var targetIx = layoutInfo.idToIndex[tempEdge.targetId];
        var sourceGraph = layoutInfo.indexToGraph[sourceIx];
        var targetGraph = layoutInfo.indexToGraph[targetIx];
        if (sourceGraph != targetGraph) {
          // Find lowest common graph ancestor
          var lca = findLCA(tempEdge.sourceId, tempEdge.targetId, layoutInfo);

          // Compute sum of node depths, relative to lca graph
          var lcaGraph = layoutInfo.graphSet[lca];
          var depth = 0;

          // Source depth
          var tempNode = layoutInfo.layoutNodes[sourceIx];
          while (-1 === lcaGraph.indexOf(tempNode.id)) {
            tempNode = layoutInfo.layoutNodes[layoutInfo.idToIndex[tempNode.parentId]];
            depth++;
          }

          // Target depth
          tempNode = layoutInfo.layoutNodes[targetIx];
          while (-1 === lcaGraph.indexOf(tempNode.id)) {
            tempNode = layoutInfo.layoutNodes[layoutInfo.idToIndex[tempNode.parentId]];
            depth++;
          }

          // logDebug('LCA of nodes ' + tempEdge.sourceId + ' and ' + tempEdge.targetId +
          //  ". Index: " + lca + " Contents: " + lcaGraph.toString() +
          //  ". Depth: " + depth);

          // Update idealLength
          idealLength *= depth * options.nestingFactor;
        }
        tempEdge.idealLength = idealLength;
        tempEdge.elasticity = elasticity;
        layoutInfo.layoutEdges.push(tempEdge);
      }

      // Finally, return layoutInfo object
      return layoutInfo;
    };

    /**
     * @brief : This function finds the index of the lowest common
     *          graph ancestor between 2 nodes in the subtree
     *          (from the graph hierarchy induced tree) whose
     *          root is graphIx
     *
     * @arg node1: node1's ID
     * @arg node2: node2's ID
     * @arg layoutInfo: layoutInfo object
     *
     */
    var findLCA = function findLCA(node1, node2, layoutInfo) {
      // Find their common ancester, starting from the root graph
      var res = findLCA_aux(node1, node2, 0, layoutInfo);
      if (2 > res.count) {
        // If aux function couldn't find the common ancester,
        // then it is the root graph
        return 0;
      } else {
        return res.graph;
      }
    };

    /**
     * @brief          : Auxiliary function used for LCA computation
     *
     * @arg node1      : node1's ID
     * @arg node2      : node2's ID
     * @arg graphIx    : subgraph index
     * @arg layoutInfo : layoutInfo object
     *
     * @return         : object of the form {count: X, graph: Y}, where:
     *                   X is the number of ancestors (max: 2) found in
     *                   graphIx (and it's subgraphs),
     *                   Y is the graph index of the lowest graph containing
     *                   all X nodes
     */
    var findLCA_aux = function findLCA_aux(node1, node2, graphIx, layoutInfo) {
      var graph = layoutInfo.graphSet[graphIx];
      // If both nodes belongs to graphIx
      if (-1 < graph.indexOf(node1) && -1 < graph.indexOf(node2)) {
        return {
          count: 2,
          graph: graphIx
        };
      }

      // Make recursive calls for all subgraphs
      var c = 0;
      for (var i = 0; i < graph.length; i++) {
        var nodeId = graph[i];
        var nodeIx = layoutInfo.idToIndex[nodeId];
        var children = layoutInfo.layoutNodes[nodeIx].children;

        // If the node has no child, skip it
        if (0 === children.length) {
          continue;
        }
        var childGraphIx = layoutInfo.indexToGraph[layoutInfo.idToIndex[children[0]]];
        var result = findLCA_aux(node1, node2, childGraphIx, layoutInfo);
        if (0 === result.count) {
          // Neither node1 nor node2 are present in this subgraph
          continue;
        } else if (1 === result.count) {
          // One of (node1, node2) is present in this subgraph
          c++;
          if (2 === c) {
            // We've already found both nodes, no need to keep searching
            break;
          }
        } else {
          // Both nodes are present in this subgraph
          return result;
        }
      }
      return {
        count: c,
        graph: graphIx
      };
    };

    /**
     * @brief: printsLayoutInfo into js console
     *         Only used for debbuging
     */
    var printLayoutInfo; 

    /**
     * @brief : Randomizes the position of all nodes
     */
    var randomizePositions = function randomizePositions(layoutInfo, cy) {
      var width = layoutInfo.clientWidth;
      var height = layoutInfo.clientHeight;
      for (var i = 0; i < layoutInfo.nodeSize; i++) {
        var n = layoutInfo.layoutNodes[i];

        // No need to randomize compound nodes or locked nodes
        if (0 === n.children.length && !n.isLocked) {
          n.positionX = Math.random() * width;
          n.positionY = Math.random() * height;
        }
      }
    };
    var getScaleInBoundsFn = function getScaleInBoundsFn(layoutInfo, options, nodes) {
      var bb = layoutInfo.boundingBox;
      var coseBB = {
        x1: Infinity,
        x2: -Infinity,
        y1: Infinity,
        y2: -Infinity
      };
      if (options.boundingBox) {
        nodes.forEach(function (node) {
          var lnode = layoutInfo.layoutNodes[layoutInfo.idToIndex[node.data('id')]];
          coseBB.x1 = Math.min(coseBB.x1, lnode.positionX);
          coseBB.x2 = Math.max(coseBB.x2, lnode.positionX);
          coseBB.y1 = Math.min(coseBB.y1, lnode.positionY);
          coseBB.y2 = Math.max(coseBB.y2, lnode.positionY);
        });
        coseBB.w = coseBB.x2 - coseBB.x1;
        coseBB.h = coseBB.y2 - coseBB.y1;
      }
      return function (ele, i) {
        var lnode = layoutInfo.layoutNodes[layoutInfo.idToIndex[ele.data('id')]];
        if (options.boundingBox) {
          // then add extra bounding box constraint
          var pctX = (lnode.positionX - coseBB.x1) / coseBB.w;
          var pctY = (lnode.positionY - coseBB.y1) / coseBB.h;
          return {
            x: bb.x1 + pctX * bb.w,
            y: bb.y1 + pctY * bb.h
          };
        } else {
          return {
            x: lnode.positionX,
            y: lnode.positionY
          };
        }
      };
    };

    /**
     * @brief          : Updates the positions of nodes in the network
     * @arg layoutInfo : LayoutInfo object
     * @arg cy         : Cytoscape object
     * @arg options    : Layout options
     */
    var refreshPositions = function refreshPositions(layoutInfo, cy, options) {
      // var s = 'Refreshing positions';
      // logDebug(s);

      var layout = options.layout;
      var nodes = options.eles.nodes();
      var getScaledPos = getScaleInBoundsFn(layoutInfo, options, nodes);
      nodes.positions(getScaledPos);

      // Trigger layoutReady only on first call
      if (true !== layoutInfo.ready) {
        // s = 'Triggering layoutready';
        // logDebug(s);
        layoutInfo.ready = true;
        layout.one('layoutready', options.ready);
        layout.emit({
          type: 'layoutready',
          layout: this
        });
      }
    };

    /**
     * @brief : Logs a debug message in JS console, if DEBUG is ON
     */
    // var logDebug = function(text) {
    //   if (DEBUG) {
    //     console.debug(text);
    //   }
    // };

    /**
     * @brief          : Performs one iteration of the physical simulation
     * @arg layoutInfo : LayoutInfo object already initialized
     * @arg cy         : Cytoscape object
     * @arg options    : Layout options
     */
    var step = function step(layoutInfo, options, _step) {
      // var s = "\n\n###############################";
      // s += "\nSTEP: " + step;
      // s += "\n###############################\n";
      // logDebug(s);

      // Calculate node repulsions
      calculateNodeForces(layoutInfo, options);
      // Calculate edge forces
      calculateEdgeForces(layoutInfo);
      // Calculate gravity forces
      calculateGravityForces(layoutInfo, options);
      // Propagate forces from parent to child
      propagateForces(layoutInfo);
      // Update positions based on calculated forces
      updatePositions(layoutInfo);
    };

    /**
     * @brief : Computes the node repulsion forces
     */
    var calculateNodeForces = function calculateNodeForces(layoutInfo, options) {
      // Go through each of the graphs in graphSet
      // Nodes only repel each other if they belong to the same graph
      // var s = 'calculateNodeForces';
      // logDebug(s);
      for (var i = 0; i < layoutInfo.graphSet.length; i++) {
        var graph = layoutInfo.graphSet[i];
        var numNodes = graph.length;

        // s = "Set: " + graph.toString();
        // logDebug(s);

        // Now get all the pairs of nodes
        // Only get each pair once, (A, B) = (B, A)
        for (var j = 0; j < numNodes; j++) {
          var node1 = layoutInfo.layoutNodes[layoutInfo.idToIndex[graph[j]]];
          for (var k = j + 1; k < numNodes; k++) {
            var node2 = layoutInfo.layoutNodes[layoutInfo.idToIndex[graph[k]]];
            nodeRepulsion(node1, node2, layoutInfo, options);
          }
        }
      }
    };
    var randomDistance = function randomDistance(max) {
      return -max + 2 * max * Math.random();
    };

    /**
     * @brief : Compute the node repulsion forces between a pair of nodes
     */
    var nodeRepulsion = function nodeRepulsion(node1, node2, layoutInfo, options) {
      // var s = "Node repulsion. Node1: " + node1.id + " Node2: " + node2.id;

      var cmptId1 = node1.cmptId;
      var cmptId2 = node2.cmptId;
      if (cmptId1 !== cmptId2 && !layoutInfo.isCompound) {
        return;
      }

      // Get direction of line connecting both node centers
      var directionX = node2.positionX - node1.positionX;
      var directionY = node2.positionY - node1.positionY;
      var maxRandDist = 1;
      // s += "\ndirectionX: " + directionX + ", directionY: " + directionY;

      // If both centers are the same, apply a random force
      if (0 === directionX && 0 === directionY) {
        directionX = randomDistance(maxRandDist);
        directionY = randomDistance(maxRandDist);
      }
      var overlap = nodesOverlap(node1, node2, directionX, directionY);
      if (overlap > 0) {
        // s += "\nNodes DO overlap.";
        // s += "\nOverlap: " + overlap;
        // If nodes overlap, repulsion force is proportional
        // to the overlap
        var force = options.nodeOverlap * overlap;

        // Compute the module and components of the force vector
        var distance = Math.sqrt(directionX * directionX + directionY * directionY);
        // s += "\nDistance: " + distance;
        var forceX = force * directionX / distance;
        var forceY = force * directionY / distance;
      } else {
        // s += "\nNodes do NOT overlap.";
        // If there's no overlap, force is inversely proportional
        // to squared distance

        // Get clipping points for both nodes
        var point1 = findClippingPoint(node1, directionX, directionY);
        var point2 = findClippingPoint(node2, -1 * directionX, -1 * directionY);

        // Use clipping points to compute distance
        var distanceX = point2.x - point1.x;
        var distanceY = point2.y - point1.y;
        var distanceSqr = distanceX * distanceX + distanceY * distanceY;
        var distance = Math.sqrt(distanceSqr);
        // s += "\nDistance: " + distance;

        // Compute the module and components of the force vector
        var force = (node1.nodeRepulsion + node2.nodeRepulsion) / distanceSqr;
        var forceX = force * distanceX / distance;
        var forceY = force * distanceY / distance;
      }

      // Apply force
      if (!node1.isLocked) {
        node1.offsetX -= forceX;
        node1.offsetY -= forceY;
      }
      if (!node2.isLocked) {
        node2.offsetX += forceX;
        node2.offsetY += forceY;
      }

      // s += "\nForceX: " + forceX + " ForceY: " + forceY;
      // logDebug(s);

      return;
    };

    /**
     * @brief  : Determines whether two nodes overlap or not
     * @return : Amount of overlapping (0 => no overlap)
     */
    var nodesOverlap = function nodesOverlap(node1, node2, dX, dY) {
      if (dX > 0) {
        var overlapX = node1.maxX - node2.minX;
      } else {
        var overlapX = node2.maxX - node1.minX;
      }
      if (dY > 0) {
        var overlapY = node1.maxY - node2.minY;
      } else {
        var overlapY = node2.maxY - node1.minY;
      }
      if (overlapX >= 0 && overlapY >= 0) {
        return Math.sqrt(overlapX * overlapX + overlapY * overlapY);
      } else {
        return 0;
      }
    };

    /**
     * @brief : Finds the point in which an edge (direction dX, dY) intersects
     *          the rectangular bounding box of it's source/target node
     */
    var findClippingPoint = function findClippingPoint(node, dX, dY) {
      // Shorcuts
      var X = node.positionX;
      var Y = node.positionY;
      var H = node.height || 1;
      var W = node.width || 1;
      var dirSlope = dY / dX;
      var nodeSlope = H / W;

      // var s = 'Computing clipping point of node ' + node.id +
      //   " . Height:  " + H + ", Width: " + W +
      //   "\nDirection " + dX + ", " + dY;
      //
      // Compute intersection
      var res = {};

      // Case: Vertical direction (up)
      if (0 === dX && 0 < dY) {
        res.x = X;
        // s += "\nUp direction";
        res.y = Y + H / 2;
        return res;
      }

      // Case: Vertical direction (down)
      if (0 === dX && 0 > dY) {
        res.x = X;
        res.y = Y + H / 2;
        // s += "\nDown direction";

        return res;
      }

      // Case: Intersects the right border
      if (0 < dX && -1 * nodeSlope <= dirSlope && dirSlope <= nodeSlope) {
        res.x = X + W / 2;
        res.y = Y + W * dY / 2 / dX;
        // s += "\nRightborder";

        return res;
      }

      // Case: Intersects the left border
      if (0 > dX && -1 * nodeSlope <= dirSlope && dirSlope <= nodeSlope) {
        res.x = X - W / 2;
        res.y = Y - W * dY / 2 / dX;
        // s += "\nLeftborder";

        return res;
      }

      // Case: Intersects the top border
      if (0 < dY && (dirSlope <= -1 * nodeSlope || dirSlope >= nodeSlope)) {
        res.x = X + H * dX / 2 / dY;
        res.y = Y + H / 2;
        // s += "\nTop border";

        return res;
      }

      // Case: Intersects the bottom border
      if (0 > dY && (dirSlope <= -1 * nodeSlope || dirSlope >= nodeSlope)) {
        res.x = X - H * dX / 2 / dY;
        res.y = Y - H / 2;
        // s += "\nBottom border";

        return res;
      }

      // s += "\nClipping point found at " + res.x + ", " + res.y;
      // logDebug(s);
      return res;
    };

    /**
     * @brief : Calculates all edge forces
     */
    var calculateEdgeForces = function calculateEdgeForces(layoutInfo, options) {
      // Iterate over all edges
      for (var i = 0; i < layoutInfo.edgeSize; i++) {
        // Get edge, source & target nodes
        var edge = layoutInfo.layoutEdges[i];
        var sourceIx = layoutInfo.idToIndex[edge.sourceId];
        var source = layoutInfo.layoutNodes[sourceIx];
        var targetIx = layoutInfo.idToIndex[edge.targetId];
        var target = layoutInfo.layoutNodes[targetIx];

        // Get direction of line connecting both node centers
        var directionX = target.positionX - source.positionX;
        var directionY = target.positionY - source.positionY;

        // If both centers are the same, do nothing.
        // A random force has already been applied as node repulsion
        if (0 === directionX && 0 === directionY) {
          continue;
        }

        // Get clipping points for both nodes
        var point1 = findClippingPoint(source, directionX, directionY);
        var point2 = findClippingPoint(target, -1 * directionX, -1 * directionY);
        var lx = point2.x - point1.x;
        var ly = point2.y - point1.y;
        var l = Math.sqrt(lx * lx + ly * ly);
        var force = Math.pow(edge.idealLength - l, 2) / edge.elasticity;
        if (0 !== l) {
          var forceX = force * lx / l;
          var forceY = force * ly / l;
        } else {
          var forceX = 0;
          var forceY = 0;
        }

        // Add this force to target and source nodes
        if (!source.isLocked) {
          source.offsetX += forceX;
          source.offsetY += forceY;
        }
        if (!target.isLocked) {
          target.offsetX -= forceX;
          target.offsetY -= forceY;
        }

        // var s = 'Edge force between nodes ' + source.id + ' and ' + target.id;
        // s += "\nDistance: " + l + " Force: (" + forceX + ", " + forceY + ")";
        // logDebug(s);
      }
    };

    /**
     * @brief : Computes gravity forces for all nodes
     */
    var calculateGravityForces = function calculateGravityForces(layoutInfo, options) {
      if (options.gravity === 0) {
        return;
      }
      var distThreshold = 1;

      // var s = 'calculateGravityForces';
      // logDebug(s);
      for (var i = 0; i < layoutInfo.graphSet.length; i++) {
        var graph = layoutInfo.graphSet[i];
        var numNodes = graph.length;

        // s = "Set: " + graph.toString();
        // logDebug(s);

        // Compute graph center
        if (0 === i) {
          var centerX = layoutInfo.clientHeight / 2;
          var centerY = layoutInfo.clientWidth / 2;
        } else {
          // Get Parent node for this graph, and use its position as center
          var temp = layoutInfo.layoutNodes[layoutInfo.idToIndex[graph[0]]];
          var parent = layoutInfo.layoutNodes[layoutInfo.idToIndex[temp.parentId]];
          var centerX = parent.positionX;
          var centerY = parent.positionY;
        }
        // s = "Center found at: " + centerX + ", " + centerY;
        // logDebug(s);

        // Apply force to all nodes in graph
        for (var j = 0; j < numNodes; j++) {
          var node = layoutInfo.layoutNodes[layoutInfo.idToIndex[graph[j]]];
          // s = "Node: " + node.id;

          if (node.isLocked) {
            continue;
          }
          var dx = centerX - node.positionX;
          var dy = centerY - node.positionY;
          var d = Math.sqrt(dx * dx + dy * dy);
          if (d > distThreshold) {
            var fx = options.gravity * dx / d;
            var fy = options.gravity * dy / d;
            node.offsetX += fx;
            node.offsetY += fy;
            // s += ": Applied force: " + fx + ", " + fy;
          }
          // logDebug(s);
        }
      }
    };

    /**
     * @brief          : This function propagates the existing offsets from
     *                   parent nodes to its descendents.
     * @arg layoutInfo : layoutInfo Object
     * @arg cy         : cytoscape Object
     * @arg options    : Layout options
     */
    var propagateForces = function propagateForces(layoutInfo, options) {
      // Inline implementation of a queue, used for traversing the graph in BFS order
      var queue = [];
      var start = 0; // Points to the start the queue
      var end = -1; // Points to the end of the queue

      // logDebug('propagateForces');

      // Start by visiting the nodes in the root graph
      queue.push.apply(queue, layoutInfo.graphSet[0]);
      end += layoutInfo.graphSet[0].length;

      // Traverse the graph, level by level,
      while (start <= end) {
        // Get the node to visit and remove it from queue
        var nodeId = queue[start++];
        var nodeIndex = layoutInfo.idToIndex[nodeId];
        var node = layoutInfo.layoutNodes[nodeIndex];
        var children = node.children;

        // We only need to process the node if it's compound
        if (0 < children.length && !node.isLocked) {
          var offX = node.offsetX;
          var offY = node.offsetY;

          // var s = "Propagating offset from parent node : " + node.id +
          //   ". OffsetX: " + offX + ". OffsetY: " + offY;
          // s += "\n Children: " + children.toString();
          // logDebug(s);

          for (var i = 0; i < children.length; i++) {
            var childNode = layoutInfo.layoutNodes[layoutInfo.idToIndex[children[i]]];
            // Propagate offset
            childNode.offsetX += offX;
            childNode.offsetY += offY;
            // Add children to queue to be visited
            queue[++end] = children[i];
          }

          // Reset parent offsets
          node.offsetX = 0;
          node.offsetY = 0;
        }
      }
    };

    /**
     * @brief : Updates the layout model positions, based on
     *          the accumulated forces
     */
    var updatePositions = function updatePositions(layoutInfo, options) {
      // var s = 'Updating positions';
      // logDebug(s);

      // Reset boundaries for compound nodes
      for (var i = 0; i < layoutInfo.nodeSize; i++) {
        var n = layoutInfo.layoutNodes[i];
        if (0 < n.children.length) {
          // logDebug("Resetting boundaries of compound node: " + n.id);
          n.maxX = undefined;
          n.minX = undefined;
          n.maxY = undefined;
          n.minY = undefined;
        }
      }
      for (var i = 0; i < layoutInfo.nodeSize; i++) {
        var n = layoutInfo.layoutNodes[i];
        if (0 < n.children.length || n.isLocked) {
          // No need to set compound or locked node position
          // logDebug("Skipping position update of node: " + n.id);
          continue;
        }
        // s = "Node: " + n.id + " Previous position: (" +
        // n.positionX + ", " + n.positionY + ").";

        // Limit displacement in order to improve stability
        var tempForce = limitForce(n.offsetX, n.offsetY, layoutInfo.temperature);
        n.positionX += tempForce.x;
        n.positionY += tempForce.y;
        n.offsetX = 0;
        n.offsetY = 0;
        n.minX = n.positionX - n.width;
        n.maxX = n.positionX + n.width;
        n.minY = n.positionY - n.height;
        n.maxY = n.positionY + n.height;
        // s += " New Position: (" + n.positionX + ", " + n.positionY + ").";
        // logDebug(s);

        // Update ancestry boudaries
        updateAncestryBoundaries(n, layoutInfo);
      }

      // Update size, position of compund nodes
      for (var i = 0; i < layoutInfo.nodeSize; i++) {
        var n = layoutInfo.layoutNodes[i];
        if (0 < n.children.length && !n.isLocked) {
          n.positionX = (n.maxX + n.minX) / 2;
          n.positionY = (n.maxY + n.minY) / 2;
          n.width = n.maxX - n.minX;
          n.height = n.maxY - n.minY;
          // s = "Updating position, size of compound node " + n.id;
          // s += "\nPositionX: " + n.positionX + ", PositionY: " + n.positionY;
          // s += "\nWidth: " + n.width + ", Height: " + n.height;
          // logDebug(s);
        }
      }
    };

    /**
     * @brief : Limits a force (forceX, forceY) to be not
     *          greater (in modulo) than max.
     8          Preserves force direction.
      */
    var limitForce = function limitForce(forceX, forceY, max) {
      // var s = "Limiting force: (" + forceX + ", " + forceY + "). Max: " + max;
      var force = Math.sqrt(forceX * forceX + forceY * forceY);
      if (force > max) {
        var res = {
          x: max * forceX / force,
          y: max * forceY / force
        };
      } else {
        var res = {
          x: forceX,
          y: forceY
        };
      }

      // s += ".\nResult: (" + res.x + ", " + res.y + ")";
      // logDebug(s);

      return res;
    };

    /**
     * @brief : Function used for keeping track of compound node
     *          sizes, since they should bound all their subnodes.
     */
    var updateAncestryBoundaries = function updateAncestryBoundaries(node, layoutInfo) {
      // var s = "Propagating new position/size of node " + node.id;
      var parentId = node.parentId;
      if (null == parentId) {
        // If there's no parent, we are done
        // s += ". No parent node.";
        // logDebug(s);
        return;
      }

      // Get Parent Node
      var p = layoutInfo.layoutNodes[layoutInfo.idToIndex[parentId]];
      var flag = false;

      // MaxX
      if (null == p.maxX || node.maxX + p.padRight > p.maxX) {
        p.maxX = node.maxX + p.padRight;
        flag = true;
        // s += "\nNew maxX for parent node " + p.id + ": " + p.maxX;
      }

      // MinX
      if (null == p.minX || node.minX - p.padLeft < p.minX) {
        p.minX = node.minX - p.padLeft;
        flag = true;
        // s += "\nNew minX for parent node " + p.id + ": " + p.minX;
      }

      // MaxY
      if (null == p.maxY || node.maxY + p.padBottom > p.maxY) {
        p.maxY = node.maxY + p.padBottom;
        flag = true;
        // s += "\nNew maxY for parent node " + p.id + ": " + p.maxY;
      }

      // MinY
      if (null == p.minY || node.minY - p.padTop < p.minY) {
        p.minY = node.minY - p.padTop;
        flag = true;
        // s += "\nNew minY for parent node " + p.id + ": " + p.minY;
      }

      // If updated boundaries, propagate changes upward
      if (flag) {
        // logDebug(s);
        return updateAncestryBoundaries(p, layoutInfo);
      }

      // s += ". No changes in boundaries/position of parent node " + p.id;
      // logDebug(s);
      return;
    };
    var separateComponents = function separateComponents(layoutInfo, options) {
      var nodes = layoutInfo.layoutNodes;
      var components = [];
      for (var i = 0; i < nodes.length; i++) {
        var node = nodes[i];
        var cid = node.cmptId;
        var component = components[cid] = components[cid] || [];
        component.push(node);
      }
      var totalA = 0;
      for (var i = 0; i < components.length; i++) {
        var c = components[i];
        if (!c) {
          continue;
        }
        c.x1 = Infinity;
        c.x2 = -Infinity;
        c.y1 = Infinity;
        c.y2 = -Infinity;
        for (var j = 0; j < c.length; j++) {
          var n = c[j];
          c.x1 = Math.min(c.x1, n.positionX - n.width / 2);
          c.x2 = Math.max(c.x2, n.positionX + n.width / 2);
          c.y1 = Math.min(c.y1, n.positionY - n.height / 2);
          c.y2 = Math.max(c.y2, n.positionY + n.height / 2);
        }
        c.w = c.x2 - c.x1;
        c.h = c.y2 - c.y1;
        totalA += c.w * c.h;
      }
      components.sort(function (c1, c2) {
        return c2.w * c2.h - c1.w * c1.h;
      });
      var x = 0;
      var y = 0;
      var usedW = 0;
      var rowH = 0;
      var maxRowW = Math.sqrt(totalA) * layoutInfo.clientWidth / layoutInfo.clientHeight;
      for (var i = 0; i < components.length; i++) {
        var c = components[i];
        if (!c) {
          continue;
        }
        for (var j = 0; j < c.length; j++) {
          var n = c[j];
          if (!n.isLocked) {
            n.positionX += x - c.x1;
            n.positionY += y - c.y1;
          }
        }
        x += c.w + options.componentSpacing;
        usedW += c.w + options.componentSpacing;
        rowH = Math.max(rowH, c.h);
        if (usedW > maxRowW) {
          y += rowH + options.componentSpacing;
          x = 0;
          usedW = 0;
          rowH = 0;
        }
      }
    };

    var defaults$3 = {
      fit: true,
      // whether to fit the viewport to the graph
      padding: 30,
      // padding used on fit
      boundingBox: undefined,
      // constrain layout bounds; { x1, y1, x2, y2 } or { x1, y1, w, h }
      avoidOverlap: true,
      // prevents node overlap, may overflow boundingBox if not enough space
      avoidOverlapPadding: 10,
      // extra spacing around nodes when avoidOverlap: true
      nodeDimensionsIncludeLabels: false,
      // Excludes the label when calculating node bounding boxes for the layout algorithm
      spacingFactor: undefined,
      // Applies a multiplicative factor (>0) to expand or compress the overall area that the nodes take up
      condense: false,
      // uses all available space on false, uses minimal space on true
      rows: undefined,
      // force num of rows in the grid
      cols: undefined,
      // force num of columns in the grid
      position: function position(node) {},
      // returns { row, col } for element
      sort: undefined,
      // a sorting function to order the nodes; e.g. function(a, b){ return a.data('weight') - b.data('weight') }
      animate: false,
      // whether to transition the node positions
      animationDuration: 500,
      // duration of animation in ms if enabled
      animationEasing: undefined,
      // easing of animation if enabled
      animateFilter: function animateFilter(node, i) {
        return true;
      },
      // a function that determines whether the node should be animated.  All nodes animated by default on animate enabled.  Non-animated nodes are positioned immediately when the layout starts
      ready: undefined,
      // callback on layoutready
      stop: undefined,
      // callback on layoutstop
      transform: function transform(node, position) {
        return position;
      } // transform a given node position. Useful for changing flow direction in discrete layouts 
    };

    function GridLayout(options) {
      this.options = extend$1({}, defaults$3, options);
    }
    GridLayout.prototype.run = function () {
      var params = this.options;
      var options = params;
      var cy = params.cy;
      var eles = options.eles;
      var nodes = eles.nodes().not(':parent');
      if (options.sort) {
        nodes = nodes.sort(options.sort);
      }
      var bb = makeBoundingBox(options.boundingBox ? options.boundingBox : {
        x1: 0,
        y1: 0,
        w: cy.width(),
        h: cy.height()
      });
      if (bb.h === 0 || bb.w === 0) {
        eles.nodes().layoutPositions(this, options, function (ele) {
          return {
            x: bb.x1,
            y: bb.y1
          };
        });
      } else {
        // width/height * splits^2 = cells where splits is number of times to split width
        var cells = nodes.size();
        var splits = Math.sqrt(cells * bb.h / bb.w);
        var rows = Math.round(splits);
        var cols = Math.round(bb.w / bb.h * splits);
        var small = function small(val) {
          if (val == null) {
            return Math.min(rows, cols);
          } else {
            var min = Math.min(rows, cols);
            if (min == rows) {
              rows = val;
            } else {
              cols = val;
            }
          }
        };
        var large = function large(val) {
          if (val == null) {
            return Math.max(rows, cols);
          } else {
            var max = Math.max(rows, cols);
            if (max == rows) {
              rows = val;
            } else {
              cols = val;
            }
          }
        };
        var oRows = options.rows;
        var oCols = options.cols != null ? options.cols : options.columns;

        // if rows or columns were set in options, use those values
        if (oRows != null && oCols != null) {
          rows = oRows;
          cols = oCols;
        } else if (oRows != null && oCols == null) {
          rows = oRows;
          cols = Math.ceil(cells / rows);
        } else if (oRows == null && oCols != null) {
          cols = oCols;
          rows = Math.ceil(cells / cols);
        }

        // otherwise use the automatic values and adjust accordingly

        // if rounding was up, see if we can reduce rows or columns
        else if (cols * rows > cells) {
          var sm = small();
          var lg = large();

          // reducing the small side takes away the most cells, so try it first
          if ((sm - 1) * lg >= cells) {
            small(sm - 1);
          } else if ((lg - 1) * sm >= cells) {
            large(lg - 1);
          }
        } else {
          // if rounding was too low, add rows or columns
          while (cols * rows < cells) {
            var _sm = small();
            var _lg = large();

            // try to add to larger side first (adds less in multiplication)
            if ((_lg + 1) * _sm >= cells) {
              large(_lg + 1);
            } else {
              small(_sm + 1);
            }
          }
        }
        var cellWidth = bb.w / cols;
        var cellHeight = bb.h / rows;
        if (options.condense) {
          cellWidth = 0;
          cellHeight = 0;
        }
        if (options.avoidOverlap) {
          for (var i = 0; i < nodes.length; i++) {
            var node = nodes[i];
            var pos = node._private.position;
            if (pos.x == null || pos.y == null) {
              // for bb
              pos.x = 0;
              pos.y = 0;
            }
            var nbb = node.layoutDimensions(options);
            var p = options.avoidOverlapPadding;
            var w = nbb.w + p;
            var h = nbb.h + p;
            cellWidth = Math.max(cellWidth, w);
            cellHeight = Math.max(cellHeight, h);
          }
        }
        var cellUsed = {}; // e.g. 'c-0-2' => true

        var used = function used(row, col) {
          return cellUsed['c-' + row + '-' + col] ? true : false;
        };
        var use = function use(row, col) {
          cellUsed['c-' + row + '-' + col] = true;
        };

        // to keep track of current cell position
        var row = 0;
        var col = 0;
        var moveToNextCell = function moveToNextCell() {
          col++;
          if (col >= cols) {
            col = 0;
            row++;
          }
        };

        // get a cache of all the manual positions
        var id2manPos = {};
        for (var _i = 0; _i < nodes.length; _i++) {
          var _node = nodes[_i];
          var rcPos = options.position(_node);
          if (rcPos && (rcPos.row !== undefined || rcPos.col !== undefined)) {
            // must have at least row or col def'd
            var _pos = {
              row: rcPos.row,
              col: rcPos.col
            };
            if (_pos.col === undefined) {
              // find unused col
              _pos.col = 0;
              while (used(_pos.row, _pos.col)) {
                _pos.col++;
              }
            } else if (_pos.row === undefined) {
              // find unused row
              _pos.row = 0;
              while (used(_pos.row, _pos.col)) {
                _pos.row++;
              }
            }
            id2manPos[_node.id()] = _pos;
            use(_pos.row, _pos.col);
          }
        }
        var getPos = function getPos(element, i) {
          var x, y;
          if (element.locked() || element.isParent()) {
            return false;
          }

          // see if we have a manual position set
          var rcPos = id2manPos[element.id()];
          if (rcPos) {
            x = rcPos.col * cellWidth + cellWidth / 2 + bb.x1;
            y = rcPos.row * cellHeight + cellHeight / 2 + bb.y1;
          } else {
            // otherwise set automatically

            while (used(row, col)) {
              moveToNextCell();
            }
            x = col * cellWidth + cellWidth / 2 + bb.x1;
            y = row * cellHeight + cellHeight / 2 + bb.y1;
            use(row, col);
            moveToNextCell();
          }
          return {
            x: x,
            y: y
          };
        };
        nodes.layoutPositions(this, options, getPos);
      }
      return this; // chaining
    };

    // default layout options
    var defaults$2 = {
      ready: function ready() {},
      // on layoutready
      stop: function stop() {} // on layoutstop
    };

    // constructor
    // options : object containing layout options
    function NullLayout(options) {
      this.options = extend$1({}, defaults$2, options);
    }

    // runs the layout
    NullLayout.prototype.run = function () {
      var options = this.options;
      var eles = options.eles; // elements to consider in the layout
      var layout = this;

      // cy is automatically populated for us in the constructor
      // (disable eslint for next line as this serves as example layout code to external developers)
      // eslint-disable-next-line no-unused-vars
      options.cy;
      layout.emit('layoutstart');

      // puts all nodes at (0, 0)
      // n.b. most layouts would use layoutPositions(), instead of positions() and manual events
      eles.nodes().positions(function () {
        return {
          x: 0,
          y: 0
        };
      });

      // trigger layoutready when each node has had its position set at least once
      layout.one('layoutready', options.ready);
      layout.emit('layoutready');

      // trigger layoutstop when the layout stops (e.g. finishes)
      layout.one('layoutstop', options.stop);
      layout.emit('layoutstop');
      return this; // chaining
    };

    // called on continuous layouts to stop them before they finish
    NullLayout.prototype.stop = function () {
      return this; // chaining
    };

    var defaults$1 = {
      positions: undefined,
      // map of (node id) => (position obj); or function(node){ return somPos; }
      zoom: undefined,
      // the zoom level to set (prob want fit = false if set)
      pan: undefined,
      // the pan level to set (prob want fit = false if set)
      fit: true,
      // whether to fit to viewport
      padding: 30,
      // padding on fit
      spacingFactor: undefined,
      // Applies a multiplicative factor (>0) to expand or compress the overall area that the nodes take up
      animate: false,
      // whether to transition the node positions
      animationDuration: 500,
      // duration of animation in ms if enabled
      animationEasing: undefined,
      // easing of animation if enabled
      animateFilter: function animateFilter(node, i) {
        return true;
      },
      // a function that determines whether the node should be animated.  All nodes animated by default on animate enabled.  Non-animated nodes are positioned immediately when the layout starts
      ready: undefined,
      // callback on layoutready
      stop: undefined,
      // callback on layoutstop
      transform: function transform(node, position) {
        return position;
      } // transform a given node position. Useful for changing flow direction in discrete layouts
    };

    function PresetLayout(options) {
      this.options = extend$1({}, defaults$1, options);
    }
    PresetLayout.prototype.run = function () {
      var options = this.options;
      var eles = options.eles;
      var nodes = eles.nodes();
      var posIsFn = fn$6(options.positions);
      function getPosition(node) {
        if (options.positions == null) {
          return copyPosition(node.position());
        }
        if (posIsFn) {
          return options.positions(node);
        }
        var pos = options.positions[node._private.data.id];
        if (pos == null) {
          return null;
        }
        return pos;
      }
      nodes.layoutPositions(this, options, function (node, i) {
        var position = getPosition(node);
        if (node.locked() || position == null) {
          return false;
        }
        return position;
      });
      return this; // chaining
    };

    var defaults = {
      fit: true,
      // whether to fit to viewport
      padding: 30,
      // fit padding
      boundingBox: undefined,
      // constrain layout bounds; { x1, y1, x2, y2 } or { x1, y1, w, h }
      animate: false,
      // whether to transition the node positions
      animationDuration: 500,
      // duration of animation in ms if enabled
      animationEasing: undefined,
      // easing of animation if enabled
      animateFilter: function animateFilter(node, i) {
        return true;
      },
      // a function that determines whether the node should be animated.  All nodes animated by default on animate enabled.  Non-animated nodes are positioned immediately when the layout starts
      ready: undefined,
      // callback on layoutready
      stop: undefined,
      // callback on layoutstop
      transform: function transform(node, position) {
        return position;
      } // transform a given node position. Useful for changing flow direction in discrete layouts 
    };

    function RandomLayout(options) {
      this.options = extend$1({}, defaults, options);
    }
    RandomLayout.prototype.run = function () {
      var options = this.options;
      var cy = options.cy;
      var eles = options.eles;
      var bb = makeBoundingBox(options.boundingBox ? options.boundingBox : {
        x1: 0,
        y1: 0,
        w: cy.width(),
        h: cy.height()
      });
      var getPos = function getPos(node, i) {
        return {
          x: bb.x1 + Math.round(Math.random() * bb.w),
          y: bb.y1 + Math.round(Math.random() * bb.h)
        };
      };
      eles.nodes().layoutPositions(this, options, getPos);
      return this; // chaining
    };

    var layout = [{
      name: 'breadthfirst',
      impl: BreadthFirstLayout
    }, {
      name: 'circle',
      impl: CircleLayout
    }, {
      name: 'concentric',
      impl: ConcentricLayout
    }, {
      name: 'cose',
      impl: CoseLayout
    }, {
      name: 'grid',
      impl: GridLayout
    }, {
      name: 'null',
      impl: NullLayout
    }, {
      name: 'preset',
      impl: PresetLayout
    }, {
      name: 'random',
      impl: RandomLayout
    }];

    function NullRenderer(options) {
      this.options = options;
      this.notifications = 0; // for testing
    }

    var noop = function noop() {};
    var throwImgErr = function throwImgErr() {
      throw new Error('A headless instance can not render images');
    };
    NullRenderer.prototype = {
      recalculateRenderedStyle: noop,
      notify: function notify() {
        this.notifications++;
      },
      init: noop,
      isHeadless: function isHeadless() {
        return true;
      },
      png: throwImgErr,
      jpg: throwImgErr
    };

    var BRp$f = {};
    BRp$f.arrowShapeWidth = 0.3;
    BRp$f.registerArrowShapes = function () {
      var arrowShapes = this.arrowShapes = {};
      var renderer = this;

      // Contract for arrow shapes:
      // 0, 0 is arrow tip
      // (0, 1) is direction towards node
      // (1, 0) is right
      //
      // functional api:
      // collide: check x, y in shape
      // roughCollide: called before collide, no false negatives
      // draw: draw
      // spacing: dist(arrowTip, nodeBoundary)
      // gap: dist(edgeTip, nodeBoundary), edgeTip may != arrowTip

      var bbCollide = function bbCollide(x, y, size, angle, translation, edgeWidth, padding) {
        var x1 = translation.x - size / 2 - padding;
        var x2 = translation.x + size / 2 + padding;
        var y1 = translation.y - size / 2 - padding;
        var y2 = translation.y + size / 2 + padding;
        var inside = x1 <= x && x <= x2 && y1 <= y && y <= y2;
        return inside;
      };
      var transform = function transform(x, y, size, angle, translation) {
        var xRotated = x * Math.cos(angle) - y * Math.sin(angle);
        var yRotated = x * Math.sin(angle) + y * Math.cos(angle);
        var xScaled = xRotated * size;
        var yScaled = yRotated * size;
        var xTranslated = xScaled + translation.x;
        var yTranslated = yScaled + translation.y;
        return {
          x: xTranslated,
          y: yTranslated
        };
      };
      var transformPoints = function transformPoints(pts, size, angle, translation) {
        var retPts = [];
        for (var i = 0; i < pts.length; i += 2) {
          var x = pts[i];
          var y = pts[i + 1];
          retPts.push(transform(x, y, size, angle, translation));
        }
        return retPts;
      };
      var pointsToArr = function pointsToArr(pts) {
        var ret = [];
        for (var i = 0; i < pts.length; i++) {
          var p = pts[i];
          ret.push(p.x, p.y);
        }
        return ret;
      };
      var standardGap = function standardGap(edge) {
        return edge.pstyle('width').pfValue * edge.pstyle('arrow-scale').pfValue * 2;
      };
      var defineArrowShape = function defineArrowShape(name, defn) {
        if (string(defn)) {
          defn = arrowShapes[defn];
        }
        arrowShapes[name] = extend$1({
          name: name,
          points: [-0.15, -0.3, 0.15, -0.3, 0.15, 0.3, -0.15, 0.3],
          collide: function collide(x, y, size, angle, translation, padding) {
            var points = pointsToArr(transformPoints(this.points, size + 2 * padding, angle, translation));
            var inside = pointInsidePolygonPoints(x, y, points);
            return inside;
          },
          roughCollide: bbCollide,
          draw: function draw(context, size, angle, translation) {
            var points = transformPoints(this.points, size, angle, translation);
            renderer.arrowShapeImpl('polygon')(context, points);
          },
          spacing: function spacing(edge) {
            return 0;
          },
          gap: standardGap
        }, defn);
      };
      defineArrowShape('none', {
        collide: falsify,
        roughCollide: falsify,
        draw: noop$1,
        spacing: zeroify,
        gap: zeroify
      });
      defineArrowShape('triangle', {
        points: [-0.15, -0.3, 0, 0, 0.15, -0.3]
      });
      defineArrowShape('arrow', 'triangle');
      defineArrowShape('triangle-backcurve', {
        points: arrowShapes['triangle'].points,
        controlPoint: [0, -0.15],
        roughCollide: bbCollide,
        draw: function draw(context, size, angle, translation, edgeWidth) {
          var ptsTrans = transformPoints(this.points, size, angle, translation);
          var ctrlPt = this.controlPoint;
          var ctrlPtTrans = transform(ctrlPt[0], ctrlPt[1], size, angle, translation);
          renderer.arrowShapeImpl(this.name)(context, ptsTrans, ctrlPtTrans);
        },
        gap: function gap(edge) {
          return standardGap(edge) * 0.8;
        }
      });
      defineArrowShape('triangle-tee', {
        points: [0, 0, 0.15, -0.3, -0.15, -0.3, 0, 0],
        pointsTee: [-0.15, -0.4, -0.15, -0.5, 0.15, -0.5, 0.15, -0.4],
        collide: function collide(x, y, size, angle, translation, edgeWidth, padding) {
          var triPts = pointsToArr(transformPoints(this.points, size + 2 * padding, angle, translation));
          var teePts = pointsToArr(transformPoints(this.pointsTee, size + 2 * padding, angle, translation));
          var inside = pointInsidePolygonPoints(x, y, triPts) || pointInsidePolygonPoints(x, y, teePts);
          return inside;
        },
        draw: function draw(context, size, angle, translation, edgeWidth) {
          var triPts = transformPoints(this.points, size, angle, translation);
          var teePts = transformPoints(this.pointsTee, size, angle, translation);
          renderer.arrowShapeImpl(this.name)(context, triPts, teePts);
        }
      });
      defineArrowShape('circle-triangle', {
        radius: 0.15,
        pointsTr: [0, -0.15, 0.15, -0.45, -0.15, -0.45, 0, -0.15],
        collide: function collide(x, y, size, angle, translation, edgeWidth, padding) {
          var t = translation;
          var circleInside = Math.pow(t.x - x, 2) + Math.pow(t.y - y, 2) <= Math.pow((size + 2 * padding) * this.radius, 2);
          var triPts = pointsToArr(transformPoints(this.points, size + 2 * padding, angle, translation));
          return pointInsidePolygonPoints(x, y, triPts) || circleInside;
        },
        draw: function draw(context, size, angle, translation, edgeWidth) {
          var triPts = transformPoints(this.pointsTr, size, angle, translation);
          renderer.arrowShapeImpl(this.name)(context, triPts, translation.x, translation.y, this.radius * size);
        },
        spacing: function spacing(edge) {
          return renderer.getArrowWidth(edge.pstyle('width').pfValue, edge.pstyle('arrow-scale').value) * this.radius;
        }
      });
      defineArrowShape('triangle-cross', {
        points: [0, 0, 0.15, -0.3, -0.15, -0.3, 0, 0],
        baseCrossLinePts: [-0.15, -0.4,
        // first half of the rectangle
        -0.15, -0.4, 0.15, -0.4,
        // second half of the rectangle
        0.15, -0.4],
        crossLinePts: function crossLinePts(size, edgeWidth) {
          // shift points so that the distance between the cross points matches edge width
          var p = this.baseCrossLinePts.slice();
          var shiftFactor = edgeWidth / size;
          var y0 = 3;
          var y1 = 5;
          p[y0] = p[y0] - shiftFactor;
          p[y1] = p[y1] - shiftFactor;
          return p;
        },
        collide: function collide(x, y, size, angle, translation, edgeWidth, padding) {
          var triPts = pointsToArr(transformPoints(this.points, size + 2 * padding, angle, translation));
          var teePts = pointsToArr(transformPoints(this.crossLinePts(size, edgeWidth), size + 2 * padding, angle, translation));
          var inside = pointInsidePolygonPoints(x, y, triPts) || pointInsidePolygonPoints(x, y, teePts);
          return inside;
        },
        draw: function draw(context, size, angle, translation, edgeWidth) {
          var triPts = transformPoints(this.points, size, angle, translation);
          var crossLinePts = transformPoints(this.crossLinePts(size, edgeWidth), size, angle, translation);
          renderer.arrowShapeImpl(this.name)(context, triPts, crossLinePts);
        }
      });
      defineArrowShape('vee', {
        points: [-0.15, -0.3, 0, 0, 0.15, -0.3, 0, -0.15],
        gap: function gap(edge) {
          return standardGap(edge) * 0.525;
        }
      });
      defineArrowShape('circle', {
        radius: 0.15,
        collide: function collide(x, y, size, angle, translation, edgeWidth, padding) {
          var t = translation;
          var inside = Math.pow(t.x - x, 2) + Math.pow(t.y - y, 2) <= Math.pow((size + 2 * padding) * this.radius, 2);
          return inside;
        },
        draw: function draw(context, size, angle, translation, edgeWidth) {
          renderer.arrowShapeImpl(this.name)(context, translation.x, translation.y, this.radius * size);
        },
        spacing: function spacing(edge) {
          return renderer.getArrowWidth(edge.pstyle('width').pfValue, edge.pstyle('arrow-scale').value) * this.radius;
        }
      });
      defineArrowShape('tee', {
        points: [-0.15, 0, -0.15, -0.1, 0.15, -0.1, 0.15, 0],
        spacing: function spacing(edge) {
          return 1;
        },
        gap: function gap(edge) {
          return 1;
        }
      });
      defineArrowShape('square', {
        points: [-0.15, 0.00, 0.15, 0.00, 0.15, -0.3, -0.15, -0.3]
      });
      defineArrowShape('diamond', {
        points: [-0.15, -0.15, 0, -0.3, 0.15, -0.15, 0, 0],
        gap: function gap(edge) {
          return edge.pstyle('width').pfValue * edge.pstyle('arrow-scale').value;
        }
      });
      defineArrowShape('chevron', {
        points: [0, 0, -0.15, -0.15, -0.1, -0.2, 0, -0.1, 0.1, -0.2, 0.15, -0.15],
        gap: function gap(edge) {
          return 0.95 * edge.pstyle('width').pfValue * edge.pstyle('arrow-scale').value;
        }
      });
    };

    var BRp$e = {};

    // Project mouse
    BRp$e.projectIntoViewport = function (clientX, clientY) {
      var cy = this.cy;
      var offsets = this.findContainerClientCoords();
      var offsetLeft = offsets[0];
      var offsetTop = offsets[1];
      var scale = offsets[4];
      var pan = cy.pan();
      var zoom = cy.zoom();
      var x = ((clientX - offsetLeft) / scale - pan.x) / zoom;
      var y = ((clientY - offsetTop) / scale - pan.y) / zoom;
      return [x, y];
    };
    BRp$e.findContainerClientCoords = function () {
      if (this.containerBB) {
        return this.containerBB;
      }
      var container = this.container;
      var rect = container.getBoundingClientRect();
      var style = this.cy.window().getComputedStyle(container);
      var styleValue = function styleValue(name) {
        return parseFloat(style.getPropertyValue(name));
      };
      var padding = {
        left: styleValue('padding-left'),
        right: styleValue('padding-right'),
        top: styleValue('padding-top'),
        bottom: styleValue('padding-bottom')
      };
      var border = {
        left: styleValue('border-left-width'),
        right: styleValue('border-right-width'),
        top: styleValue('border-top-width'),
        bottom: styleValue('border-bottom-width')
      };
      var clientWidth = container.clientWidth;
      var clientHeight = container.clientHeight;
      var paddingHor = padding.left + padding.right;
      var paddingVer = padding.top + padding.bottom;
      var borderHor = border.left + border.right;
      var scale = rect.width / (clientWidth + borderHor);
      var unscaledW = clientWidth - paddingHor;
      var unscaledH = clientHeight - paddingVer;
      var left = rect.left + padding.left + border.left;
      var top = rect.top + padding.top + border.top;
      return this.containerBB = [left, top, unscaledW, unscaledH, scale];
    };
    BRp$e.invalidateContainerClientCoordsCache = function () {
      this.containerBB = null;
    };
    BRp$e.findNearestElement = function (x, y, interactiveElementsOnly, isTouch) {
      return this.findNearestElements(x, y, interactiveElementsOnly, isTouch)[0];
    };
    BRp$e.findNearestElements = function (x, y, interactiveElementsOnly, isTouch) {
      var self = this;
      var r = this;
      var eles = r.getCachedZSortedEles();
      var near = []; // 1 node max, 1 edge max
      var zoom = r.cy.zoom();
      var hasCompounds = r.cy.hasCompoundNodes();
      var edgeThreshold = (isTouch ? 24 : 8) / zoom;
      var nodeThreshold = (isTouch ? 8 : 2) / zoom;
      var labelThreshold = (isTouch ? 8 : 2) / zoom;
      var minSqDist = Infinity;
      var nearEdge;
      var nearNode;
      if (interactiveElementsOnly) {
        eles = eles.interactive;
      }
      function addEle(ele, sqDist) {
        if (ele.isNode()) {
          if (nearNode) {
            return; // can't replace node
          } else {
            nearNode = ele;
            near.push(ele);
          }
        }
        if (ele.isEdge() && (sqDist == null || sqDist < minSqDist)) {
          if (nearEdge) {
            // then replace existing edge
            // can replace only if same z-index
            if (nearEdge.pstyle('z-compound-depth').value === ele.pstyle('z-compound-depth').value && nearEdge.pstyle('z-compound-depth').value === ele.pstyle('z-compound-depth').value) {
              for (var i = 0; i < near.length; i++) {
                if (near[i].isEdge()) {
                  near[i] = ele;
                  nearEdge = ele;
                  minSqDist = sqDist != null ? sqDist : minSqDist;
                  break;
                }
              }
            }
          } else {
            near.push(ele);
            nearEdge = ele;
            minSqDist = sqDist != null ? sqDist : minSqDist;
          }
        }
      }
      function checkNode(node) {
        var width = node.outerWidth() + 2 * nodeThreshold;
        var height = node.outerHeight() + 2 * nodeThreshold;
        var hw = width / 2;
        var hh = height / 2;
        var pos = node.position();
        var cornerRadius = node.pstyle('corner-radius').value === 'auto' ? 'auto' : node.pstyle('corner-radius').pfValue;
        var rs = node._private.rscratch;
        if (pos.x - hw <= x && x <= pos.x + hw // bb check x
        && pos.y - hh <= y && y <= pos.y + hh // bb check y
        ) {
          var shape = r.nodeShapes[self.getNodeShape(node)];
          if (shape.checkPoint(x, y, 0, width, height, pos.x, pos.y, cornerRadius, rs)) {
            addEle(node, 0);
            return true;
          }
        }
      }
      function checkEdge(edge) {
        var _p = edge._private;
        var rs = _p.rscratch;
        var styleWidth = edge.pstyle('width').pfValue;
        var scale = edge.pstyle('arrow-scale').value;
        var width = styleWidth / 2 + edgeThreshold; // more like a distance radius from centre
        var widthSq = width * width;
        var width2 = width * 2;
        var src = _p.source;
        var tgt = _p.target;
        var sqDist;
        if (rs.edgeType === 'segments' || rs.edgeType === 'straight' || rs.edgeType === 'haystack') {
          var pts = rs.allpts;
          for (var i = 0; i + 3 < pts.length; i += 2) {
            if (inLineVicinity(x, y, pts[i], pts[i + 1], pts[i + 2], pts[i + 3], width2) && widthSq > (sqDist = sqdistToFiniteLine(x, y, pts[i], pts[i + 1], pts[i + 2], pts[i + 3]))) {
              addEle(edge, sqDist);
              return true;
            }
          }
        } else if (rs.edgeType === 'bezier' || rs.edgeType === 'multibezier' || rs.edgeType === 'self' || rs.edgeType === 'compound') {
          var pts = rs.allpts;
          for (var i = 0; i + 5 < rs.allpts.length; i += 4) {
            if (inBezierVicinity(x, y, pts[i], pts[i + 1], pts[i + 2], pts[i + 3], pts[i + 4], pts[i + 5], width2) && widthSq > (sqDist = sqdistToQuadraticBezier(x, y, pts[i], pts[i + 1], pts[i + 2], pts[i + 3], pts[i + 4], pts[i + 5]))) {
              addEle(edge, sqDist);
              return true;
            }
          }
        }

        // if we're close to the edge but didn't hit it, maybe we hit its arrows

        var src = src || _p.source;
        var tgt = tgt || _p.target;
        var arSize = self.getArrowWidth(styleWidth, scale);
        var arrows = [{
          name: 'source',
          x: rs.arrowStartX,
          y: rs.arrowStartY,
          angle: rs.srcArrowAngle
        }, {
          name: 'target',
          x: rs.arrowEndX,
          y: rs.arrowEndY,
          angle: rs.tgtArrowAngle
        }, {
          name: 'mid-source',
          x: rs.midX,
          y: rs.midY,
          angle: rs.midsrcArrowAngle
        }, {
          name: 'mid-target',
          x: rs.midX,
          y: rs.midY,
          angle: rs.midtgtArrowAngle
        }];
        for (var i = 0; i < arrows.length; i++) {
          var ar = arrows[i];
          var shape = r.arrowShapes[edge.pstyle(ar.name + '-arrow-shape').value];
          var edgeWidth = edge.pstyle('width').pfValue;
          if (shape.roughCollide(x, y, arSize, ar.angle, {
            x: ar.x,
            y: ar.y
          }, edgeWidth, edgeThreshold) && shape.collide(x, y, arSize, ar.angle, {
            x: ar.x,
            y: ar.y
          }, edgeWidth, edgeThreshold)) {
            addEle(edge);
            return true;
          }
        }

        // for compound graphs, hitting edge may actually want a connected node instead (b/c edge may have greater z-index precedence)
        if (hasCompounds && near.length > 0) {
          checkNode(src);
          checkNode(tgt);
        }
      }
      function preprop(obj, name, pre) {
        return getPrefixedProperty(obj, name, pre);
      }
      function checkLabel(ele, prefix) {
        var _p = ele._private;
        var th = labelThreshold;
        var prefixDash;
        if (prefix) {
          prefixDash = prefix + '-';
        } else {
          prefixDash = '';
        }
        ele.boundingBox();
        var bb = _p.labelBounds[prefix || 'main'];
        var text = ele.pstyle(prefixDash + 'label').value;
        var eventsEnabled = ele.pstyle('text-events').strValue === 'yes';
        if (!eventsEnabled || !text) {
          return;
        }
        var lx = preprop(_p.rscratch, 'labelX', prefix);
        var ly = preprop(_p.rscratch, 'labelY', prefix);
        var theta = preprop(_p.rscratch, 'labelAngle', prefix);
        var ox = ele.pstyle(prefixDash + 'text-margin-x').pfValue;
        var oy = ele.pstyle(prefixDash + 'text-margin-y').pfValue;
        var lx1 = bb.x1 - th - ox; // (-ox, -oy) as bb already includes margin
        var lx2 = bb.x2 + th - ox; // and rotation is about (lx, ly)
        var ly1 = bb.y1 - th - oy;
        var ly2 = bb.y2 + th - oy;
        if (theta) {
          var cos = Math.cos(theta);
          var sin = Math.sin(theta);
          var rotate = function rotate(x, y) {
            x = x - lx;
            y = y - ly;
            return {
              x: x * cos - y * sin + lx,
              y: x * sin + y * cos + ly
            };
          };
          var px1y1 = rotate(lx1, ly1);
          var px1y2 = rotate(lx1, ly2);
          var px2y1 = rotate(lx2, ly1);
          var px2y2 = rotate(lx2, ly2);
          var points = [
          // with the margin added after the rotation is applied
          px1y1.x + ox, px1y1.y + oy, px2y1.x + ox, px2y1.y + oy, px2y2.x + ox, px2y2.y + oy, px1y2.x + ox, px1y2.y + oy];
          if (pointInsidePolygonPoints(x, y, points)) {
            addEle(ele);
            return true;
          }
        } else {
          // do a cheaper bb check
          if (inBoundingBox(bb, x, y)) {
            addEle(ele);
            return true;
          }
        }
      }
      for (var i = eles.length - 1; i >= 0; i--) {
        // reverse order for precedence
        var ele = eles[i];
        if (ele.isNode()) {
          checkNode(ele) || checkLabel(ele);
        } else {
          // then edge
          checkEdge(ele) || checkLabel(ele) || checkLabel(ele, 'source') || checkLabel(ele, 'target');
        }
      }
      return near;
    };

    // 'Give me everything from this box'
    BRp$e.getAllInBox = function (x1, y1, x2, y2) {
      var eles = this.getCachedZSortedEles().interactive;
      var box = [];
      var x1c = Math.min(x1, x2);
      var x2c = Math.max(x1, x2);
      var y1c = Math.min(y1, y2);
      var y2c = Math.max(y1, y2);
      x1 = x1c;
      x2 = x2c;
      y1 = y1c;
      y2 = y2c;
      var boxBb = makeBoundingBox({
        x1: x1,
        y1: y1,
        x2: x2,
        y2: y2
      });
      for (var e = 0; e < eles.length; e++) {
        var ele = eles[e];
        if (ele.isNode()) {
          var node = ele;
          var nodeBb = node.boundingBox({
            includeNodes: true,
            includeEdges: false,
            includeLabels: false
          });
          if (boundingBoxesIntersect(boxBb, nodeBb) && !boundingBoxInBoundingBox(nodeBb, boxBb)) {
            box.push(node);
          }
        } else {
          var edge = ele;
          var _p = edge._private;
          var rs = _p.rscratch;
          if (rs.startX != null && rs.startY != null && !inBoundingBox(boxBb, rs.startX, rs.startY)) {
            continue;
          }
          if (rs.endX != null && rs.endY != null && !inBoundingBox(boxBb, rs.endX, rs.endY)) {
            continue;
          }
          if (rs.edgeType === 'bezier' || rs.edgeType === 'multibezier' || rs.edgeType === 'self' || rs.edgeType === 'compound' || rs.edgeType === 'segments' || rs.edgeType === 'haystack') {
            var pts = _p.rstyle.bezierPts || _p.rstyle.linePts || _p.rstyle.haystackPts;
            var allInside = true;
            for (var i = 0; i < pts.length; i++) {
              if (!pointInBoundingBox(boxBb, pts[i])) {
                allInside = false;
                break;
              }
            }
            if (allInside) {
              box.push(edge);
            }
          } else if (rs.edgeType === 'haystack' || rs.edgeType === 'straight') {
            box.push(edge);
          }
        }
      }
      return box;
    };

    var BRp$d = {};
    BRp$d.calculateArrowAngles = function (edge) {
      var rs = edge._private.rscratch;
      var isHaystack = rs.edgeType === 'haystack';
      var isBezier = rs.edgeType === 'bezier';
      var isMultibezier = rs.edgeType === 'multibezier';
      var isSegments = rs.edgeType === 'segments';
      var isCompound = rs.edgeType === 'compound';
      var isSelf = rs.edgeType === 'self';

      // Displacement gives direction for arrowhead orientation
      var dispX, dispY;
      var startX, startY, endX, endY, midX, midY;
      if (isHaystack) {
        startX = rs.haystackPts[0];
        startY = rs.haystackPts[1];
        endX = rs.haystackPts[2];
        endY = rs.haystackPts[3];
      } else {
        startX = rs.arrowStartX;
        startY = rs.arrowStartY;
        endX = rs.arrowEndX;
        endY = rs.arrowEndY;
      }
      midX = rs.midX;
      midY = rs.midY;

      // source
      //

      if (isSegments) {
        dispX = startX - rs.segpts[0];
        dispY = startY - rs.segpts[1];
      } else if (isMultibezier || isCompound || isSelf || isBezier) {
        var pts = rs.allpts;
        var bX = qbezierAt(pts[0], pts[2], pts[4], 0.1);
        var bY = qbezierAt(pts[1], pts[3], pts[5], 0.1);
        dispX = startX - bX;
        dispY = startY - bY;
      } else {
        dispX = startX - midX;
        dispY = startY - midY;
      }
      rs.srcArrowAngle = getAngleFromDisp(dispX, dispY);

      // mid target
      //

      var midX = rs.midX;
      var midY = rs.midY;
      if (isHaystack) {
        midX = (startX + endX) / 2;
        midY = (startY + endY) / 2;
      }
      dispX = endX - startX;
      dispY = endY - startY;
      if (isSegments) {
        var pts = rs.allpts;
        if (pts.length / 2 % 2 === 0) {
          var i2 = pts.length / 2;
          var i1 = i2 - 2;
          dispX = pts[i2] - pts[i1];
          dispY = pts[i2 + 1] - pts[i1 + 1];
        } else if (rs.isRound) {
          dispX = rs.midVector[1];
          dispY = -rs.midVector[0];
        } else {
          var i2 = pts.length / 2 - 1;
          var i1 = i2 - 2;
          dispX = pts[i2] - pts[i1];
          dispY = pts[i2 + 1] - pts[i1 + 1];
        }
      } else if (isMultibezier || isCompound || isSelf) {
        var pts = rs.allpts;
        var cpts = rs.ctrlpts;
        var bp0x, bp0y;
        var bp1x, bp1y;
        if (cpts.length / 2 % 2 === 0) {
          var p0 = pts.length / 2 - 1; // startpt
          var ic = p0 + 2;
          var p1 = ic + 2;
          bp0x = qbezierAt(pts[p0], pts[ic], pts[p1], 0.0);
          bp0y = qbezierAt(pts[p0 + 1], pts[ic + 1], pts[p1 + 1], 0.0);
          bp1x = qbezierAt(pts[p0], pts[ic], pts[p1], 0.0001);
          bp1y = qbezierAt(pts[p0 + 1], pts[ic + 1], pts[p1 + 1], 0.0001);
        } else {
          var ic = pts.length / 2 - 1; // ctrpt
          var p0 = ic - 2; // startpt
          var p1 = ic + 2; // endpt

          bp0x = qbezierAt(pts[p0], pts[ic], pts[p1], 0.4999);
          bp0y = qbezierAt(pts[p0 + 1], pts[ic + 1], pts[p1 + 1], 0.4999);
          bp1x = qbezierAt(pts[p0], pts[ic], pts[p1], 0.5);
          bp1y = qbezierAt(pts[p0 + 1], pts[ic + 1], pts[p1 + 1], 0.5);
        }
        dispX = bp1x - bp0x;
        dispY = bp1y - bp0y;
      }
      rs.midtgtArrowAngle = getAngleFromDisp(dispX, dispY);
      rs.midDispX = dispX;
      rs.midDispY = dispY;

      // mid source
      //

      dispX *= -1;
      dispY *= -1;
      if (isSegments) {
        var pts = rs.allpts;
        if (pts.length / 2 % 2 === 0) ; else if (!rs.isRound) {
          var i2 = pts.length / 2 - 1;
          var i3 = i2 + 2;
          dispX = -(pts[i3] - pts[i2]);
          dispY = -(pts[i3 + 1] - pts[i2 + 1]);
        }
      }
      rs.midsrcArrowAngle = getAngleFromDisp(dispX, dispY);

      // target
      //

      if (isSegments) {
        dispX = endX - rs.segpts[rs.segpts.length - 2];
        dispY = endY - rs.segpts[rs.segpts.length - 1];
      } else if (isMultibezier || isCompound || isSelf || isBezier) {
        var pts = rs.allpts;
        var l = pts.length;
        var bX = qbezierAt(pts[l - 6], pts[l - 4], pts[l - 2], 0.9);
        var bY = qbezierAt(pts[l - 5], pts[l - 3], pts[l - 1], 0.9);
        dispX = endX - bX;
        dispY = endY - bY;
      } else {
        dispX = endX - midX;
        dispY = endY - midY;
      }
      rs.tgtArrowAngle = getAngleFromDisp(dispX, dispY);
    };
    BRp$d.getArrowWidth = BRp$d.getArrowHeight = function (edgeWidth, scale) {
      var cache = this.arrowWidthCache = this.arrowWidthCache || {};
      var cachedVal = cache[edgeWidth + ', ' + scale];
      if (cachedVal) {
        return cachedVal;
      }
      cachedVal = Math.max(Math.pow(edgeWidth * 13.37, 0.9), 29) * scale;
      cache[edgeWidth + ', ' + scale] = cachedVal;
      return cachedVal;
    };

    /**
     * Explained by Blindman67 at https://stackoverflow.com/a/44856925/11028828
     */

    // Declare reused variable to avoid reallocating variables every time the function is called
    var x,
      y,
      v1 = {},
      v2 = {},
      sinA,
      sinA90,
      radDirection,
      drawDirection,
      angle,
      halfAngle,
      cRadius,
      lenOut,
      radius,
      limit;
    var startX, startY, stopX, stopY;
    var lastPoint;

    // convert 2 points into vector form, polar form, and normalised
    var asVec = function asVec(p, pp, v) {
      v.x = pp.x - p.x;
      v.y = pp.y - p.y;
      v.len = Math.sqrt(v.x * v.x + v.y * v.y);
      v.nx = v.x / v.len;
      v.ny = v.y / v.len;
      v.ang = Math.atan2(v.ny, v.nx);
    };
    var invertVec = function invertVec(originalV, invertedV) {
      invertedV.x = originalV.x * -1;
      invertedV.y = originalV.y * -1;
      invertedV.nx = originalV.nx * -1;
      invertedV.ny = originalV.ny * -1;
      invertedV.ang = originalV.ang > 0 ? -(Math.PI - originalV.ang) : Math.PI + originalV.ang;
    };
    var calcCornerArc = function calcCornerArc(previousPoint, currentPoint, nextPoint, radiusMax, isArcRadius) {
      //-----------------------------------------
      // Part 1
      previousPoint !== lastPoint ? asVec(currentPoint, previousPoint, v1) : invertVec(v2, v1); // Avoid recalculating vec if it is the invert of the last one calculated
      asVec(currentPoint, nextPoint, v2);
      sinA = v1.nx * v2.ny - v1.ny * v2.nx;
      sinA90 = v1.nx * v2.nx - v1.ny * -v2.ny;
      angle = Math.asin(Math.max(-1, Math.min(1, sinA)));
      if (Math.abs(angle) < 1e-6) {
        x = currentPoint.x;
        y = currentPoint.y;
        cRadius = radius = 0;
        return;
      }
      //-----------------------------------------
      radDirection = 1;
      drawDirection = false;
      if (sinA90 < 0) {
        if (angle < 0) {
          angle = Math.PI + angle;
        } else {
          angle = Math.PI - angle;
          radDirection = -1;
          drawDirection = true;
        }
      } else {
        if (angle > 0) {
          radDirection = -1;
          drawDirection = true;
        }
      }
      if (currentPoint.radius !== undefined) {
        radius = currentPoint.radius;
      } else {
        radius = radiusMax;
      }
      //-----------------------------------------
      // Part 2
      halfAngle = angle / 2;
      //-----------------------------------------

      limit = Math.min(v1.len / 2, v2.len / 2);
      if (isArcRadius) {
        //-----------------------------------------
        // Part 3
        lenOut = Math.abs(Math.cos(halfAngle) * radius / Math.sin(halfAngle));

        //-----------------------------------------
        // Special part A
        if (lenOut > limit) {
          lenOut = limit;
          cRadius = Math.abs(lenOut * Math.sin(halfAngle) / Math.cos(halfAngle));
        } else {
          cRadius = radius;
        }
      } else {
        lenOut = Math.min(limit, radius);
        cRadius = Math.abs(lenOut * Math.sin(halfAngle) / Math.cos(halfAngle));
      }
      //-----------------------------------------

      //-----------------------------------------
      // Part 4
      stopX = currentPoint.x + v2.nx * lenOut;
      stopY = currentPoint.y + v2.ny * lenOut;
      //-----------------------------------------
      // Part 5
      x = stopX - v2.ny * cRadius * radDirection;
      y = stopY + v2.nx * cRadius * radDirection;
      //-----------------------------------------
      // Additional Part : calculate start point E
      startX = currentPoint.x + v1.nx * lenOut;
      startY = currentPoint.y + v1.ny * lenOut;

      // Save last point to avoid recalculating vector when not needed
      lastPoint = currentPoint;
    };

    /**
     * Draw corner provided by {@link getRoundCorner}
     *
     * @param ctx :CanvasRenderingContext2D
     * @param roundCorner {{cx:number, cy:number, radius:number, endAngle: number, startAngle: number, counterClockwise: boolean}}
     */
    function drawPreparedRoundCorner(ctx, roundCorner) {
      if (roundCorner.radius === 0) ctx.lineTo(roundCorner.cx, roundCorner.cy);else ctx.arc(roundCorner.cx, roundCorner.cy, roundCorner.radius, roundCorner.startAngle, roundCorner.endAngle, roundCorner.counterClockwise);
    }

    /**
     * Get round corner from a point and its previous and next neighbours in a path
     *
     * @param previousPoint {{x: number, y:number, radius: number?}}
     * @param currentPoint {{x: number, y:number, radius: number?}}
     * @param nextPoint {{x: number, y:number, radius: number?}}
     * @param radiusMax :number
     * @param isArcRadius :boolean
     * @return {{
     * cx:number, cy:number, radius:number,
     * startX:number, startY:number,
     * stopX:number, stopY: number,
     * endAngle: number, startAngle: number, counterClockwise: boolean
     * }}
     */
    function getRoundCorner(previousPoint, currentPoint, nextPoint, radiusMax) {
      var isArcRadius = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : true;
      if (radiusMax === 0 || currentPoint.radius === 0) return {
        cx: currentPoint.x,
        cy: currentPoint.y,
        radius: 0,
        startX: currentPoint.x,
        startY: currentPoint.y,
        stopX: currentPoint.x,
        stopY: currentPoint.y,
        startAngle: undefined,
        endAngle: undefined,
        counterClockwise: undefined
      };
      calcCornerArc(previousPoint, currentPoint, nextPoint, radiusMax, isArcRadius);
      return {
        cx: x,
        cy: y,
        radius: cRadius,
        startX: startX,
        startY: startY,
        stopX: stopX,
        stopY: stopY,
        startAngle: v1.ang + Math.PI / 2 * radDirection,
        endAngle: v2.ang - Math.PI / 2 * radDirection,
        counterClockwise: drawDirection
      };
    }

    var BRp$c = {};
    BRp$c.findMidptPtsEtc = function (edge, pairInfo) {
      var posPts = pairInfo.posPts,
        intersectionPts = pairInfo.intersectionPts,
        vectorNormInverse = pairInfo.vectorNormInverse;
      var midptPts;

      // n.b. assumes all edges in bezier bundle have same endpoints specified
      var srcManEndpt = edge.pstyle('source-endpoint');
      var tgtManEndpt = edge.pstyle('target-endpoint');
      var haveManualEndPts = srcManEndpt.units != null && tgtManEndpt.units != null;
      var recalcVectorNormInverse = function recalcVectorNormInverse(x1, y1, x2, y2) {
        var dy = y2 - y1;
        var dx = x2 - x1;
        var l = Math.sqrt(dx * dx + dy * dy);
        return {
          x: -dy / l,
          y: dx / l
        };
      };
      var edgeDistances = edge.pstyle('edge-distances').value;
      switch (edgeDistances) {
        case 'node-position':
          midptPts = posPts;
          break;
        case 'intersection':
          midptPts = intersectionPts;
          break;
        case 'endpoints':
          {
            if (haveManualEndPts) {
              var _this$manualEndptToPx = this.manualEndptToPx(edge.source()[0], srcManEndpt),
                _this$manualEndptToPx2 = _slicedToArray(_this$manualEndptToPx, 2),
                x1 = _this$manualEndptToPx2[0],
                y1 = _this$manualEndptToPx2[1];
              var _this$manualEndptToPx3 = this.manualEndptToPx(edge.target()[0], tgtManEndpt),
                _this$manualEndptToPx4 = _slicedToArray(_this$manualEndptToPx3, 2),
                x2 = _this$manualEndptToPx4[0],
                y2 = _this$manualEndptToPx4[1];
              var endPts = {
                x1: x1,
                y1: y1,
                x2: x2,
                y2: y2
              };
              vectorNormInverse = recalcVectorNormInverse(x1, y1, x2, y2);
              midptPts = endPts;
            } else {
              warn("Edge ".concat(edge.id(), " has edge-distances:endpoints specified without manual endpoints specified via source-endpoint and target-endpoint.  Falling back on edge-distances:intersection (default)."));
              midptPts = intersectionPts; // back to default
            }

            break;
          }
      }
      return {
        midptPts: midptPts,
        vectorNormInverse: vectorNormInverse
      };
    };
    BRp$c.findHaystackPoints = function (edges) {
      for (var i = 0; i < edges.length; i++) {
        var edge = edges[i];
        var _p = edge._private;
        var rs = _p.rscratch;
        if (!rs.haystack) {
          var angle = Math.random() * 2 * Math.PI;
          rs.source = {
            x: Math.cos(angle),
            y: Math.sin(angle)
          };
          angle = Math.random() * 2 * Math.PI;
          rs.target = {
            x: Math.cos(angle),
            y: Math.sin(angle)
          };
        }
        var src = _p.source;
        var tgt = _p.target;
        var srcPos = src.position();
        var tgtPos = tgt.position();
        var srcW = src.width();
        var tgtW = tgt.width();
        var srcH = src.height();
        var tgtH = tgt.height();
        var radius = edge.pstyle('haystack-radius').value;
        var halfRadius = radius / 2; // b/c have to half width/height

        rs.haystackPts = rs.allpts = [rs.source.x * srcW * halfRadius + srcPos.x, rs.source.y * srcH * halfRadius + srcPos.y, rs.target.x * tgtW * halfRadius + tgtPos.x, rs.target.y * tgtH * halfRadius + tgtPos.y];
        rs.midX = (rs.allpts[0] + rs.allpts[2]) / 2;
        rs.midY = (rs.allpts[1] + rs.allpts[3]) / 2;

        // always override as haystack in case set to different type previously
        rs.edgeType = 'haystack';
        rs.haystack = true;
        this.storeEdgeProjections(edge);
        this.calculateArrowAngles(edge);
        this.recalculateEdgeLabelProjections(edge);
        this.calculateLabelAngles(edge);
      }
    };
    BRp$c.findSegmentsPoints = function (edge, pairInfo) {
      // Segments (multiple straight lines)

      var rs = edge._private.rscratch;
      var segmentWs = edge.pstyle('segment-weights');
      var segmentDs = edge.pstyle('segment-distances');
      var segmentRs = edge.pstyle('segment-radii');
      var segmentTs = edge.pstyle('radius-type');
      var segmentsN = Math.min(segmentWs.pfValue.length, segmentDs.pfValue.length);
      var lastRadius = segmentRs.pfValue[segmentRs.pfValue.length - 1];
      var lastRadiusType = segmentTs.pfValue[segmentTs.pfValue.length - 1];
      rs.edgeType = 'segments';
      rs.segpts = [];
      rs.radii = [];
      rs.isArcRadius = [];
      for (var s = 0; s < segmentsN; s++) {
        var w = segmentWs.pfValue[s];
        var d = segmentDs.pfValue[s];
        var w1 = 1 - w;
        var w2 = w;
        var _this$findMidptPtsEtc = this.findMidptPtsEtc(edge, pairInfo),
          midptPts = _this$findMidptPtsEtc.midptPts,
          vectorNormInverse = _this$findMidptPtsEtc.vectorNormInverse;
        var adjustedMidpt = {
          x: midptPts.x1 * w1 + midptPts.x2 * w2,
          y: midptPts.y1 * w1 + midptPts.y2 * w2
        };
        rs.segpts.push(adjustedMidpt.x + vectorNormInverse.x * d, adjustedMidpt.y + vectorNormInverse.y * d);
        rs.radii.push(segmentRs.pfValue[s] !== undefined ? segmentRs.pfValue[s] : lastRadius);
        rs.isArcRadius.push((segmentTs.pfValue[s] !== undefined ? segmentTs.pfValue[s] : lastRadiusType) === 'arc-radius');
      }
    };
    BRp$c.findLoopPoints = function (edge, pairInfo, i, edgeIsUnbundled) {
      // Self-edge

      var rs = edge._private.rscratch;
      var dirCounts = pairInfo.dirCounts,
        srcPos = pairInfo.srcPos;
      var ctrlptDists = edge.pstyle('control-point-distances');
      var ctrlptDist = ctrlptDists ? ctrlptDists.pfValue[0] : undefined;
      var loopDir = edge.pstyle('loop-direction').pfValue;
      var loopSwp = edge.pstyle('loop-sweep').pfValue;
      var stepSize = edge.pstyle('control-point-step-size').pfValue;
      rs.edgeType = 'self';
      var j = i;
      var loopDist = stepSize;
      if (edgeIsUnbundled) {
        j = 0;
        loopDist = ctrlptDist;
      }
      var loopAngle = loopDir - Math.PI / 2;
      var outAngle = loopAngle - loopSwp / 2;
      var inAngle = loopAngle + loopSwp / 2;

      // increase by step size for overlapping loops, keyed on direction and sweep values
      var dc = String(loopDir + '_' + loopSwp);
      j = dirCounts[dc] === undefined ? dirCounts[dc] = 0 : ++dirCounts[dc];
      rs.ctrlpts = [srcPos.x + Math.cos(outAngle) * 1.4 * loopDist * (j / 3 + 1), srcPos.y + Math.sin(outAngle) * 1.4 * loopDist * (j / 3 + 1), srcPos.x + Math.cos(inAngle) * 1.4 * loopDist * (j / 3 + 1), srcPos.y + Math.sin(inAngle) * 1.4 * loopDist * (j / 3 + 1)];
    };
    BRp$c.findCompoundLoopPoints = function (edge, pairInfo, i, edgeIsUnbundled) {
      // Compound edge

      var rs = edge._private.rscratch;
      rs.edgeType = 'compound';
      var srcPos = pairInfo.srcPos,
        tgtPos = pairInfo.tgtPos,
        srcW = pairInfo.srcW,
        srcH = pairInfo.srcH,
        tgtW = pairInfo.tgtW,
        tgtH = pairInfo.tgtH;
      var stepSize = edge.pstyle('control-point-step-size').pfValue;
      var ctrlptDists = edge.pstyle('control-point-distances');
      var ctrlptDist = ctrlptDists ? ctrlptDists.pfValue[0] : undefined;
      var j = i;
      var loopDist = stepSize;
      if (edgeIsUnbundled) {
        j = 0;
        loopDist = ctrlptDist;
      }
      var loopW = 50;
      var loopaPos = {
        x: srcPos.x - srcW / 2,
        y: srcPos.y - srcH / 2
      };
      var loopbPos = {
        x: tgtPos.x - tgtW / 2,
        y: tgtPos.y - tgtH / 2
      };
      var loopPos = {
        x: Math.min(loopaPos.x, loopbPos.x),
        y: Math.min(loopaPos.y, loopbPos.y)
      };

      // avoids cases with impossible beziers
      var minCompoundStretch = 0.5;
      var compoundStretchA = Math.max(minCompoundStretch, Math.log(srcW * 0.01));
      var compoundStretchB = Math.max(minCompoundStretch, Math.log(tgtW * 0.01));
      rs.ctrlpts = [loopPos.x, loopPos.y - (1 + Math.pow(loopW, 1.12) / 100) * loopDist * (j / 3 + 1) * compoundStretchA, loopPos.x - (1 + Math.pow(loopW, 1.12) / 100) * loopDist * (j / 3 + 1) * compoundStretchB, loopPos.y];
    };
    BRp$c.findStraightEdgePoints = function (edge) {
      // Straight edge within bundle

      edge._private.rscratch.edgeType = 'straight';
    };
    BRp$c.findBezierPoints = function (edge, pairInfo, i, edgeIsUnbundled, edgeIsSwapped) {
      var rs = edge._private.rscratch;
      var stepSize = edge.pstyle('control-point-step-size').pfValue;
      var ctrlptDists = edge.pstyle('control-point-distances');
      var ctrlptWs = edge.pstyle('control-point-weights');
      var bezierN = ctrlptDists && ctrlptWs ? Math.min(ctrlptDists.value.length, ctrlptWs.value.length) : 1;
      var ctrlptDist = ctrlptDists ? ctrlptDists.pfValue[0] : undefined;
      var ctrlptWeight = ctrlptWs.value[0];

      // (Multi)bezier

      var multi = edgeIsUnbundled;
      rs.edgeType = multi ? 'multibezier' : 'bezier';
      rs.ctrlpts = [];
      for (var b = 0; b < bezierN; b++) {
        var normctrlptDist = (0.5 - pairInfo.eles.length / 2 + i) * stepSize * (edgeIsSwapped ? -1 : 1);
        var manctrlptDist = void 0;
        var sign = signum(normctrlptDist);
        if (multi) {
          ctrlptDist = ctrlptDists ? ctrlptDists.pfValue[b] : stepSize; // fall back on step size
          ctrlptWeight = ctrlptWs.value[b];
        }
        if (edgeIsUnbundled) {
          // multi or single unbundled
          manctrlptDist = ctrlptDist;
        } else {
          manctrlptDist = ctrlptDist !== undefined ? sign * ctrlptDist : undefined;
        }
        var distanceFromMidpoint = manctrlptDist !== undefined ? manctrlptDist : normctrlptDist;
        var w1 = 1 - ctrlptWeight;
        var w2 = ctrlptWeight;
        var _this$findMidptPtsEtc2 = this.findMidptPtsEtc(edge, pairInfo),
          midptPts = _this$findMidptPtsEtc2.midptPts,
          vectorNormInverse = _this$findMidptPtsEtc2.vectorNormInverse;
        var adjustedMidpt = {
          x: midptPts.x1 * w1 + midptPts.x2 * w2,
          y: midptPts.y1 * w1 + midptPts.y2 * w2
        };
        rs.ctrlpts.push(adjustedMidpt.x + vectorNormInverse.x * distanceFromMidpoint, adjustedMidpt.y + vectorNormInverse.y * distanceFromMidpoint);
      }
    };
    BRp$c.findTaxiPoints = function (edge, pairInfo) {
      // Taxicab geometry with two turns maximum

      var rs = edge._private.rscratch;
      rs.edgeType = 'segments';
      var VERTICAL = 'vertical';
      var HORIZONTAL = 'horizontal';
      var LEFTWARD = 'leftward';
      var RIGHTWARD = 'rightward';
      var DOWNWARD = 'downward';
      var UPWARD = 'upward';
      var AUTO = 'auto';
      var posPts = pairInfo.posPts,
        srcW = pairInfo.srcW,
        srcH = pairInfo.srcH,
        tgtW = pairInfo.tgtW,
        tgtH = pairInfo.tgtH;
      var edgeDistances = edge.pstyle('edge-distances').value;
      var dIncludesNodeBody = edgeDistances !== 'node-position';
      var taxiDir = edge.pstyle('taxi-direction').value;
      var rawTaxiDir = taxiDir; // unprocessed value
      var taxiTurn = edge.pstyle('taxi-turn');
      var turnIsPercent = taxiTurn.units === '%';
      var taxiTurnPfVal = taxiTurn.pfValue;
      var turnIsNegative = taxiTurnPfVal < 0; // i.e. from target side
      var minD = edge.pstyle('taxi-turn-min-distance').pfValue;
      var dw = dIncludesNodeBody ? (srcW + tgtW) / 2 : 0;
      var dh = dIncludesNodeBody ? (srcH + tgtH) / 2 : 0;
      var pdx = posPts.x2 - posPts.x1;
      var pdy = posPts.y2 - posPts.y1;

      // take away the effective w/h from the magnitude of the delta value
      var subDWH = function subDWH(dxy, dwh) {
        if (dxy > 0) {
          return Math.max(dxy - dwh, 0);
        } else {
          return Math.min(dxy + dwh, 0);
        }
      };
      var dx = subDWH(pdx, dw);
      var dy = subDWH(pdy, dh);
      var isExplicitDir = false;
      if (rawTaxiDir === AUTO) {
        taxiDir = Math.abs(dx) > Math.abs(dy) ? HORIZONTAL : VERTICAL;
      } else if (rawTaxiDir === UPWARD || rawTaxiDir === DOWNWARD) {
        taxiDir = VERTICAL;
        isExplicitDir = true;
      } else if (rawTaxiDir === LEFTWARD || rawTaxiDir === RIGHTWARD) {
        taxiDir = HORIZONTAL;
        isExplicitDir = true;
      }
      var isVert = taxiDir === VERTICAL;
      var l = isVert ? dy : dx;
      var pl = isVert ? pdy : pdx;
      var sgnL = signum(pl);
      var forcedDir = false;
      if (!(isExplicitDir && (turnIsPercent || turnIsNegative)) // forcing in this case would cause weird growing in the opposite direction
      && (rawTaxiDir === DOWNWARD && pl < 0 || rawTaxiDir === UPWARD && pl > 0 || rawTaxiDir === LEFTWARD && pl > 0 || rawTaxiDir === RIGHTWARD && pl < 0)) {
        sgnL *= -1;
        l = sgnL * Math.abs(l);
        forcedDir = true;
      }
      var d;
      if (turnIsPercent) {
        var p = taxiTurnPfVal < 0 ? 1 + taxiTurnPfVal : taxiTurnPfVal;
        d = p * l;
      } else {
        var k = taxiTurnPfVal < 0 ? l : 0;
        d = k + taxiTurnPfVal * sgnL;
      }
      var getIsTooClose = function getIsTooClose(d) {
        return Math.abs(d) < minD || Math.abs(d) >= Math.abs(l);
      };
      var isTooCloseSrc = getIsTooClose(d);
      var isTooCloseTgt = getIsTooClose(Math.abs(l) - Math.abs(d));
      var isTooClose = isTooCloseSrc || isTooCloseTgt;
      if (isTooClose && !forcedDir) {
        // non-ideal routing
        if (isVert) {
          // vertical fallbacks
          var lShapeInsideSrc = Math.abs(pl) <= srcH / 2;
          var lShapeInsideTgt = Math.abs(pdx) <= tgtW / 2;
          if (lShapeInsideSrc) {
            // horizontal Z-shape (direction not respected)
            var x = (posPts.x1 + posPts.x2) / 2;
            var y1 = posPts.y1,
              y2 = posPts.y2;
            rs.segpts = [x, y1, x, y2];
          } else if (lShapeInsideTgt) {
            // vertical Z-shape (distance not respected)
            var y = (posPts.y1 + posPts.y2) / 2;
            var x1 = posPts.x1,
              x2 = posPts.x2;
            rs.segpts = [x1, y, x2, y];
          } else {
            // L-shape fallback (turn distance not respected, but works well with tree siblings)
            rs.segpts = [posPts.x1, posPts.y2];
          }
        } else {
          // horizontal fallbacks
          var _lShapeInsideSrc = Math.abs(pl) <= srcW / 2;
          var _lShapeInsideTgt = Math.abs(pdy) <= tgtH / 2;
          if (_lShapeInsideSrc) {
            // vertical Z-shape (direction not respected)
            var _y = (posPts.y1 + posPts.y2) / 2;
            var _x = posPts.x1,
              _x2 = posPts.x2;
            rs.segpts = [_x, _y, _x2, _y];
          } else if (_lShapeInsideTgt) {
            // horizontal Z-shape (turn distance not respected)
            var _x3 = (posPts.x1 + posPts.x2) / 2;
            var _y2 = posPts.y1,
              _y3 = posPts.y2;
            rs.segpts = [_x3, _y2, _x3, _y3];
          } else {
            // L-shape (turn distance not respected, but works well for tree siblings)
            rs.segpts = [posPts.x2, posPts.y1];
          }
        }
      } else {
        // ideal routing
        if (isVert) {
          var _y4 = posPts.y1 + d + (dIncludesNodeBody ? srcH / 2 * sgnL : 0);
          var _x4 = posPts.x1,
            _x5 = posPts.x2;
          rs.segpts = [_x4, _y4, _x5, _y4];
        } else {
          // horizontal
          var _x6 = posPts.x1 + d + (dIncludesNodeBody ? srcW / 2 * sgnL : 0);
          var _y5 = posPts.y1,
            _y6 = posPts.y2;
          rs.segpts = [_x6, _y5, _x6, _y6];
        }
      }
      if (rs.isRound) {
        var radius = edge.pstyle('taxi-radius').value;
        var isArcRadius = edge.pstyle('radius-type').value[0] === 'arc-radius';
        rs.radii = new Array(rs.segpts.length / 2).fill(radius);
        rs.isArcRadius = new Array(rs.segpts.length / 2).fill(isArcRadius);
      }
    };
    BRp$c.tryToCorrectInvalidPoints = function (edge, pairInfo) {
      var rs = edge._private.rscratch;

      // can only correct beziers for now...
      if (rs.edgeType === 'bezier') {
        var srcPos = pairInfo.srcPos,
          tgtPos = pairInfo.tgtPos,
          srcW = pairInfo.srcW,
          srcH = pairInfo.srcH,
          tgtW = pairInfo.tgtW,
          tgtH = pairInfo.tgtH,
          srcShape = pairInfo.srcShape,
          tgtShape = pairInfo.tgtShape,
          srcCornerRadius = pairInfo.srcCornerRadius,
          tgtCornerRadius = pairInfo.tgtCornerRadius,
          srcRs = pairInfo.srcRs,
          tgtRs = pairInfo.tgtRs;
        var badStart = !number$1(rs.startX) || !number$1(rs.startY);
        var badAStart = !number$1(rs.arrowStartX) || !number$1(rs.arrowStartY);
        var badEnd = !number$1(rs.endX) || !number$1(rs.endY);
        var badAEnd = !number$1(rs.arrowEndX) || !number$1(rs.arrowEndY);
        var minCpADistFactor = 3;
        var arrowW = this.getArrowWidth(edge.pstyle('width').pfValue, edge.pstyle('arrow-scale').value) * this.arrowShapeWidth;
        var minCpADist = minCpADistFactor * arrowW;
        var startACpDist = dist({
          x: rs.ctrlpts[0],
          y: rs.ctrlpts[1]
        }, {
          x: rs.startX,
          y: rs.startY
        });
        var closeStartACp = startACpDist < minCpADist;
        var endACpDist = dist({
          x: rs.ctrlpts[0],
          y: rs.ctrlpts[1]
        }, {
          x: rs.endX,
          y: rs.endY
        });
        var closeEndACp = endACpDist < minCpADist;
        var overlapping = false;
        if (badStart || badAStart || closeStartACp) {
          overlapping = true;

          // project control point along line from src centre to outside the src shape
          // (otherwise intersection will yield nothing)
          var cpD = {
            // delta
            x: rs.ctrlpts[0] - srcPos.x,
            y: rs.ctrlpts[1] - srcPos.y
          };
          var cpL = Math.sqrt(cpD.x * cpD.x + cpD.y * cpD.y); // length of line
          var cpM = {
            // normalised delta
            x: cpD.x / cpL,
            y: cpD.y / cpL
          };
          var radius = Math.max(srcW, srcH);
          var cpProj = {
            // *2 radius guarantees outside shape
            x: rs.ctrlpts[0] + cpM.x * 2 * radius,
            y: rs.ctrlpts[1] + cpM.y * 2 * radius
          };
          var srcCtrlPtIntn = srcShape.intersectLine(srcPos.x, srcPos.y, srcW, srcH, cpProj.x, cpProj.y, 0, srcCornerRadius, srcRs);
          if (closeStartACp) {
            rs.ctrlpts[0] = rs.ctrlpts[0] + cpM.x * (minCpADist - startACpDist);
            rs.ctrlpts[1] = rs.ctrlpts[1] + cpM.y * (minCpADist - startACpDist);
          } else {
            rs.ctrlpts[0] = srcCtrlPtIntn[0] + cpM.x * minCpADist;
            rs.ctrlpts[1] = srcCtrlPtIntn[1] + cpM.y * minCpADist;
          }
        }
        if (badEnd || badAEnd || closeEndACp) {
          overlapping = true;

          // project control point along line from tgt centre to outside the tgt shape
          // (otherwise intersection will yield nothing)
          var _cpD = {
            // delta
            x: rs.ctrlpts[0] - tgtPos.x,
            y: rs.ctrlpts[1] - tgtPos.y
          };
          var _cpL = Math.sqrt(_cpD.x * _cpD.x + _cpD.y * _cpD.y); // length of line
          var _cpM = {
            // normalised delta
            x: _cpD.x / _cpL,
            y: _cpD.y / _cpL
          };
          var _radius = Math.max(srcW, srcH);
          var _cpProj = {
            // *2 radius guarantees outside shape
            x: rs.ctrlpts[0] + _cpM.x * 2 * _radius,
            y: rs.ctrlpts[1] + _cpM.y * 2 * _radius
          };
          var tgtCtrlPtIntn = tgtShape.intersectLine(tgtPos.x, tgtPos.y, tgtW, tgtH, _cpProj.x, _cpProj.y, 0, tgtCornerRadius, tgtRs);
          if (closeEndACp) {
            rs.ctrlpts[0] = rs.ctrlpts[0] + _cpM.x * (minCpADist - endACpDist);
            rs.ctrlpts[1] = rs.ctrlpts[1] + _cpM.y * (minCpADist - endACpDist);
          } else {
            rs.ctrlpts[0] = tgtCtrlPtIntn[0] + _cpM.x * minCpADist;
            rs.ctrlpts[1] = tgtCtrlPtIntn[1] + _cpM.y * minCpADist;
          }
        }
        if (overlapping) {
          // recalc endpts
          this.findEndpoints(edge);
        }
      }
    };
    BRp$c.storeAllpts = function (edge) {
      var rs = edge._private.rscratch;
      if (rs.edgeType === 'multibezier' || rs.edgeType === 'bezier' || rs.edgeType === 'self' || rs.edgeType === 'compound') {
        rs.allpts = [];
        rs.allpts.push(rs.startX, rs.startY);
        for (var b = 0; b + 1 < rs.ctrlpts.length; b += 2) {
          // ctrl pt itself
          rs.allpts.push(rs.ctrlpts[b], rs.ctrlpts[b + 1]);

          // the midpt between ctrlpts as intermediate destination pts
          if (b + 3 < rs.ctrlpts.length) {
            rs.allpts.push((rs.ctrlpts[b] + rs.ctrlpts[b + 2]) / 2, (rs.ctrlpts[b + 1] + rs.ctrlpts[b + 3]) / 2);
          }
        }
        rs.allpts.push(rs.endX, rs.endY);
        var m, mt;
        if (rs.ctrlpts.length / 2 % 2 === 0) {
          m = rs.allpts.length / 2 - 1;
          rs.midX = rs.allpts[m];
          rs.midY = rs.allpts[m + 1];
        } else {
          m = rs.allpts.length / 2 - 3;
          mt = 0.5;
          rs.midX = qbezierAt(rs.allpts[m], rs.allpts[m + 2], rs.allpts[m + 4], mt);
          rs.midY = qbezierAt(rs.allpts[m + 1], rs.allpts[m + 3], rs.allpts[m + 5], mt);
        }
      } else if (rs.edgeType === 'straight') {
        // need to calc these after endpts
        rs.allpts = [rs.startX, rs.startY, rs.endX, rs.endY];

        // default midpt for labels etc
        rs.midX = (rs.startX + rs.endX + rs.arrowStartX + rs.arrowEndX) / 4;
        rs.midY = (rs.startY + rs.endY + rs.arrowStartY + rs.arrowEndY) / 4;
      } else if (rs.edgeType === 'segments') {
        rs.allpts = [];
        rs.allpts.push(rs.startX, rs.startY);
        rs.allpts.push.apply(rs.allpts, rs.segpts);
        rs.allpts.push(rs.endX, rs.endY);
        if (rs.isRound) {
          rs.roundCorners = [];
          for (var i = 2; i + 3 < rs.allpts.length; i += 2) {
            var radius = rs.radii[i / 2 - 1];
            var isArcRadius = rs.isArcRadius[i / 2 - 1];
            rs.roundCorners.push(getRoundCorner({
              x: rs.allpts[i - 2],
              y: rs.allpts[i - 1]
            }, {
              x: rs.allpts[i],
              y: rs.allpts[i + 1],
              radius: radius
            }, {
              x: rs.allpts[i + 2],
              y: rs.allpts[i + 3]
            }, radius, isArcRadius));
          }
        }
        if (rs.segpts.length % 4 === 0) {
          var i2 = rs.segpts.length / 2;
          var i1 = i2 - 2;
          rs.midX = (rs.segpts[i1] + rs.segpts[i2]) / 2;
          rs.midY = (rs.segpts[i1 + 1] + rs.segpts[i2 + 1]) / 2;
        } else {
          var _i = rs.segpts.length / 2 - 1;
          if (!rs.isRound) {
            rs.midX = rs.segpts[_i];
            rs.midY = rs.segpts[_i + 1];
          } else {
            var point = {
              x: rs.segpts[_i],
              y: rs.segpts[_i + 1]
            };
            var corner = rs.roundCorners[_i / 2];
            var v = [point.x - corner.cx, point.y - corner.cy];
            var factor = corner.radius / Math.sqrt(Math.pow(v[0], 2) + Math.pow(v[1], 2));
            v = v.map(function (c) {
              return c * factor;
            });
            rs.midX = corner.cx + v[0];
            rs.midY = corner.cy + v[1];
            rs.midVector = v;
          }
        }
      }
    };
    BRp$c.checkForInvalidEdgeWarning = function (edge) {
      var rs = edge[0]._private.rscratch;
      if (rs.nodesOverlap || number$1(rs.startX) && number$1(rs.startY) && number$1(rs.endX) && number$1(rs.endY)) {
        rs.loggedErr = false;
      } else {
        if (!rs.loggedErr) {
          rs.loggedErr = true;
          warn('Edge `' + edge.id() + '` has invalid endpoints and so it is impossible to draw.  Adjust your edge style (e.g. control points) accordingly or use an alternative edge type.  This is expected behaviour when the source node and the target node overlap.');
        }
      }
    };
    BRp$c.findEdgeControlPoints = function (edges) {
      var _this = this;
      if (!edges || edges.length === 0) {
        return;
      }
      var r = this;
      var cy = r.cy;
      var hasCompounds = cy.hasCompoundNodes();
      var hashTable = {
        map: new Map$2(),
        get: function get(pairId) {
          var map2 = this.map.get(pairId[0]);
          if (map2 != null) {
            return map2.get(pairId[1]);
          } else {
            return null;
          }
        },
        set: function set(pairId, val) {
          var map2 = this.map.get(pairId[0]);
          if (map2 == null) {
            map2 = new Map$2();
            this.map.set(pairId[0], map2);
          }
          map2.set(pairId[1], val);
        }
      };
      var pairIds = [];
      var haystackEdges = [];

      // create a table of edge (src, tgt) => list of edges between them
      for (var i = 0; i < edges.length; i++) {
        var edge = edges[i];
        var _p = edge._private;
        var curveStyle = edge.pstyle('curve-style').value;

        // ignore edges who are not to be displayed
        // they shouldn't take up space
        if (edge.removed() || !edge.takesUpSpace()) {
          continue;
        }
        if (curveStyle === 'haystack') {
          haystackEdges.push(edge);
          continue;
        }
        var edgeIsUnbundled = curveStyle === 'unbundled-bezier' || curveStyle.endsWith('segments') || curveStyle === 'straight' || curveStyle === 'straight-triangle' || curveStyle.endsWith('taxi');
        var edgeIsBezier = curveStyle === 'unbundled-bezier' || curveStyle === 'bezier';
        var src = _p.source;
        var tgt = _p.target;
        var srcIndex = src.poolIndex();
        var tgtIndex = tgt.poolIndex();
        var pairId = [srcIndex, tgtIndex].sort();
        var tableEntry = hashTable.get(pairId);
        if (tableEntry == null) {
          tableEntry = {
            eles: []
          };
          hashTable.set(pairId, tableEntry);
          pairIds.push(pairId);
        }
        tableEntry.eles.push(edge);
        if (edgeIsUnbundled) {
          tableEntry.hasUnbundled = true;
        }
        if (edgeIsBezier) {
          tableEntry.hasBezier = true;
        }
      }

      // for each pair (src, tgt), create the ctrl pts
      // Nested for loop is OK; total number of iterations for both loops = edgeCount
      var _loop = function _loop(p) {
        var pairId = pairIds[p];
        var pairInfo = hashTable.get(pairId);
        var swappedpairInfo = void 0;
        if (!pairInfo.hasUnbundled) {
          var pllEdges = pairInfo.eles[0].parallelEdges().filter(function (e) {
            return e.isBundledBezier();
          });
          clearArray(pairInfo.eles);
          pllEdges.forEach(function (edge) {
            return pairInfo.eles.push(edge);
          });

          // for each pair id, the edges should be sorted by index
          pairInfo.eles.sort(function (edge1, edge2) {
            return edge1.poolIndex() - edge2.poolIndex();
          });
        }
        var firstEdge = pairInfo.eles[0];
        var src = firstEdge.source();
        var tgt = firstEdge.target();

        // make sure src/tgt distinction is consistent w.r.t. pairId
        if (src.poolIndex() > tgt.poolIndex()) {
          var temp = src;
          src = tgt;
          tgt = temp;
        }
        var srcPos = pairInfo.srcPos = src.position();
        var tgtPos = pairInfo.tgtPos = tgt.position();
        var srcW = pairInfo.srcW = src.outerWidth();
        var srcH = pairInfo.srcH = src.outerHeight();
        var tgtW = pairInfo.tgtW = tgt.outerWidth();
        var tgtH = pairInfo.tgtH = tgt.outerHeight();
        var srcShape = pairInfo.srcShape = r.nodeShapes[_this.getNodeShape(src)];
        var tgtShape = pairInfo.tgtShape = r.nodeShapes[_this.getNodeShape(tgt)];
        var srcCornerRadius = pairInfo.srcCornerRadius = src.pstyle('corner-radius').value === 'auto' ? 'auto' : src.pstyle('corner-radius').pfValue;
        var tgtCornerRadius = pairInfo.tgtCornerRadius = tgt.pstyle('corner-radius').value === 'auto' ? 'auto' : tgt.pstyle('corner-radius').pfValue;
        var tgtRs = pairInfo.tgtRs = tgt._private.rscratch;
        var srcRs = pairInfo.srcRs = src._private.rscratch;
        pairInfo.dirCounts = {
          'north': 0,
          'west': 0,
          'south': 0,
          'east': 0,
          'northwest': 0,
          'southwest': 0,
          'northeast': 0,
          'southeast': 0
        };
        for (var _i2 = 0; _i2 < pairInfo.eles.length; _i2++) {
          var _edge = pairInfo.eles[_i2];
          var rs = _edge[0]._private.rscratch;
          var _curveStyle = _edge.pstyle('curve-style').value;
          var _edgeIsUnbundled = _curveStyle === 'unbundled-bezier' || _curveStyle.endsWith('segments') || _curveStyle.endsWith('taxi');

          // whether the normalised pair order is the reverse of the edge's src-tgt order
          var edgeIsSwapped = !src.same(_edge.source());
          if (!pairInfo.calculatedIntersection && src !== tgt && (pairInfo.hasBezier || pairInfo.hasUnbundled)) {
            pairInfo.calculatedIntersection = true;

            // pt outside src shape to calc distance/displacement from src to tgt
            var srcOutside = srcShape.intersectLine(srcPos.x, srcPos.y, srcW, srcH, tgtPos.x, tgtPos.y, 0, srcCornerRadius, srcRs);
            var srcIntn = pairInfo.srcIntn = srcOutside;

            // pt outside tgt shape to calc distance/displacement from src to tgt
            var tgtOutside = tgtShape.intersectLine(tgtPos.x, tgtPos.y, tgtW, tgtH, srcPos.x, srcPos.y, 0, tgtCornerRadius, tgtRs);
            var tgtIntn = pairInfo.tgtIntn = tgtOutside;
            var intersectionPts = pairInfo.intersectionPts = {
              x1: srcOutside[0],
              x2: tgtOutside[0],
              y1: srcOutside[1],
              y2: tgtOutside[1]
            };
            var posPts = pairInfo.posPts = {
              x1: srcPos.x,
              x2: tgtPos.x,
              y1: srcPos.y,
              y2: tgtPos.y
            };
            var dy = tgtOutside[1] - srcOutside[1];
            var dx = tgtOutside[0] - srcOutside[0];
            var l = Math.sqrt(dx * dx + dy * dy);
            var vector = pairInfo.vector = {
              x: dx,
              y: dy
            };
            var vectorNorm = pairInfo.vectorNorm = {
              x: vector.x / l,
              y: vector.y / l
            };
            var vectorNormInverse = {
              x: -vectorNorm.y,
              y: vectorNorm.x
            };

            // if node shapes overlap, then no ctrl pts to draw
            pairInfo.nodesOverlap = !number$1(l) || tgtShape.checkPoint(srcOutside[0], srcOutside[1], 0, tgtW, tgtH, tgtPos.x, tgtPos.y, tgtCornerRadius, tgtRs) || srcShape.checkPoint(tgtOutside[0], tgtOutside[1], 0, srcW, srcH, srcPos.x, srcPos.y, srcCornerRadius, srcRs);
            pairInfo.vectorNormInverse = vectorNormInverse;
            swappedpairInfo = {
              nodesOverlap: pairInfo.nodesOverlap,
              dirCounts: pairInfo.dirCounts,
              calculatedIntersection: true,
              hasBezier: pairInfo.hasBezier,
              hasUnbundled: pairInfo.hasUnbundled,
              eles: pairInfo.eles,
              srcPos: tgtPos,
              tgtPos: srcPos,
              srcW: tgtW,
              srcH: tgtH,
              tgtW: srcW,
              tgtH: srcH,
              srcIntn: tgtIntn,
              tgtIntn: srcIntn,
              srcShape: tgtShape,
              tgtShape: srcShape,
              posPts: {
                x1: posPts.x2,
                y1: posPts.y2,
                x2: posPts.x1,
                y2: posPts.y1
              },
              intersectionPts: {
                x1: intersectionPts.x2,
                y1: intersectionPts.y2,
                x2: intersectionPts.x1,
                y2: intersectionPts.y1
              },
              vector: {
                x: -vector.x,
                y: -vector.y
              },
              vectorNorm: {
                x: -vectorNorm.x,
                y: -vectorNorm.y
              },
              vectorNormInverse: {
                x: -vectorNormInverse.x,
                y: -vectorNormInverse.y
              }
            };
          }
          var passedPairInfo = edgeIsSwapped ? swappedpairInfo : pairInfo;
          rs.nodesOverlap = passedPairInfo.nodesOverlap;
          rs.srcIntn = passedPairInfo.srcIntn;
          rs.tgtIntn = passedPairInfo.tgtIntn;
          rs.isRound = _curveStyle.startsWith('round');
          if (hasCompounds && (src.isParent() || src.isChild() || tgt.isParent() || tgt.isChild()) && (src.parents().anySame(tgt) || tgt.parents().anySame(src) || src.same(tgt) && src.isParent())) {
            _this.findCompoundLoopPoints(_edge, passedPairInfo, _i2, _edgeIsUnbundled);
          } else if (src === tgt) {
            _this.findLoopPoints(_edge, passedPairInfo, _i2, _edgeIsUnbundled);
          } else if (_curveStyle.endsWith('segments')) {
            _this.findSegmentsPoints(_edge, passedPairInfo);
          } else if (_curveStyle.endsWith('taxi')) {
            _this.findTaxiPoints(_edge, passedPairInfo);
          } else if (_curveStyle === 'straight' || !_edgeIsUnbundled && pairInfo.eles.length % 2 === 1 && _i2 === Math.floor(pairInfo.eles.length / 2)) {
            _this.findStraightEdgePoints(_edge);
          } else {
            _this.findBezierPoints(_edge, passedPairInfo, _i2, _edgeIsUnbundled, edgeIsSwapped);
          }
          _this.findEndpoints(_edge);
          _this.tryToCorrectInvalidPoints(_edge, passedPairInfo);
          _this.checkForInvalidEdgeWarning(_edge);
          _this.storeAllpts(_edge);
          _this.storeEdgeProjections(_edge);
          _this.calculateArrowAngles(_edge);
          _this.recalculateEdgeLabelProjections(_edge);
          _this.calculateLabelAngles(_edge);
        } // for pair edges
      };
      for (var p = 0; p < pairIds.length; p++) {
        _loop(p);
      } // for pair ids

      // haystacks avoid the expense of pairInfo stuff (intersections etc.)
      this.findHaystackPoints(haystackEdges);
    };
    function getPts(pts) {
      var retPts = [];
      if (pts == null) {
        return;
      }
      for (var i = 0; i < pts.length; i += 2) {
        var x = pts[i];
        var y = pts[i + 1];
        retPts.push({
          x: x,
          y: y
        });
      }
      return retPts;
    }
    BRp$c.getSegmentPoints = function (edge) {
      var rs = edge[0]._private.rscratch;
      var type = rs.edgeType;
      if (type === 'segments') {
        this.recalculateRenderedStyle(edge);
        return getPts(rs.segpts);
      }
    };
    BRp$c.getControlPoints = function (edge) {
      var rs = edge[0]._private.rscratch;
      var type = rs.edgeType;
      if (type === 'bezier' || type === 'multibezier' || type === 'self' || type === 'compound') {
        this.recalculateRenderedStyle(edge);
        return getPts(rs.ctrlpts);
      }
    };
    BRp$c.getEdgeMidpoint = function (edge) {
      var rs = edge[0]._private.rscratch;
      this.recalculateRenderedStyle(edge);
      return {
        x: rs.midX,
        y: rs.midY
      };
    };

    var BRp$b = {};
    BRp$b.manualEndptToPx = function (node, prop) {
      var r = this;
      var npos = node.position();
      var w = node.outerWidth();
      var h = node.outerHeight();
      var rs = node._private.rscratch;
      if (prop.value.length === 2) {
        var p = [prop.pfValue[0], prop.pfValue[1]];
        if (prop.units[0] === '%') {
          p[0] = p[0] * w;
        }
        if (prop.units[1] === '%') {
          p[1] = p[1] * h;
        }
        p[0] += npos.x;
        p[1] += npos.y;
        return p;
      } else {
        var angle = prop.pfValue[0];
        angle = -Math.PI / 2 + angle; // start at 12 o'clock

        var l = 2 * Math.max(w, h);
        var _p = [npos.x + Math.cos(angle) * l, npos.y + Math.sin(angle) * l];
        return r.nodeShapes[this.getNodeShape(node)].intersectLine(npos.x, npos.y, w, h, _p[0], _p[1], 0, node.pstyle('corner-radius').value === 'auto' ? 'auto' : node.pstyle('corner-radius').pfValue, rs);
      }
    };
    BRp$b.findEndpoints = function (edge) {
      var r = this;
      var intersect;
      var source = edge.source()[0];
      var target = edge.target()[0];
      var srcPos = source.position();
      var tgtPos = target.position();
      var tgtArShape = edge.pstyle('target-arrow-shape').value;
      var srcArShape = edge.pstyle('source-arrow-shape').value;
      var tgtDist = edge.pstyle('target-distance-from-node').pfValue;
      var srcDist = edge.pstyle('source-distance-from-node').pfValue;
      var srcRs = source._private.rscratch;
      var tgtRs = target._private.rscratch;
      var curveStyle = edge.pstyle('curve-style').value;
      var rs = edge._private.rscratch;
      var et = rs.edgeType;
      var taxi = curveStyle === 'taxi';
      var self = et === 'self' || et === 'compound';
      var bezier = et === 'bezier' || et === 'multibezier' || self;
      var multi = et !== 'bezier';
      var lines = et === 'straight' || et === 'segments';
      var segments = et === 'segments';
      var hasEndpts = bezier || multi || lines;
      var overrideEndpts = self || taxi;
      var srcManEndpt = edge.pstyle('source-endpoint');
      var srcManEndptVal = overrideEndpts ? 'outside-to-node' : srcManEndpt.value;
      var srcCornerRadius = source.pstyle('corner-radius').value === 'auto' ? 'auto' : source.pstyle('corner-radius').pfValue;
      var tgtManEndpt = edge.pstyle('target-endpoint');
      var tgtManEndptVal = overrideEndpts ? 'outside-to-node' : tgtManEndpt.value;
      var tgtCornerRadius = target.pstyle('corner-radius').value === 'auto' ? 'auto' : target.pstyle('corner-radius').pfValue;
      rs.srcManEndpt = srcManEndpt;
      rs.tgtManEndpt = tgtManEndpt;
      var p1; // last known point of edge on target side
      var p2; // last known point of edge on source side

      var p1_i; // point to intersect with target shape
      var p2_i; // point to intersect with source shape

      if (bezier) {
        var cpStart = [rs.ctrlpts[0], rs.ctrlpts[1]];
        var cpEnd = multi ? [rs.ctrlpts[rs.ctrlpts.length - 2], rs.ctrlpts[rs.ctrlpts.length - 1]] : cpStart;
        p1 = cpEnd;
        p2 = cpStart;
      } else if (lines) {
        var srcArrowFromPt = !segments ? [tgtPos.x, tgtPos.y] : rs.segpts.slice(0, 2);
        var tgtArrowFromPt = !segments ? [srcPos.x, srcPos.y] : rs.segpts.slice(rs.segpts.length - 2);
        p1 = tgtArrowFromPt;
        p2 = srcArrowFromPt;
      }
      if (tgtManEndptVal === 'inside-to-node') {
        intersect = [tgtPos.x, tgtPos.y];
      } else if (tgtManEndpt.units) {
        intersect = this.manualEndptToPx(target, tgtManEndpt);
      } else if (tgtManEndptVal === 'outside-to-line') {
        intersect = rs.tgtIntn; // use cached value from ctrlpt calc
      } else {
        if (tgtManEndptVal === 'outside-to-node' || tgtManEndptVal === 'outside-to-node-or-label') {
          p1_i = p1;
        } else if (tgtManEndptVal === 'outside-to-line' || tgtManEndptVal === 'outside-to-line-or-label') {
          p1_i = [srcPos.x, srcPos.y];
        }
        intersect = r.nodeShapes[this.getNodeShape(target)].intersectLine(tgtPos.x, tgtPos.y, target.outerWidth(), target.outerHeight(), p1_i[0], p1_i[1], 0, tgtCornerRadius, tgtRs);
        if (tgtManEndptVal === 'outside-to-node-or-label' || tgtManEndptVal === 'outside-to-line-or-label') {
          var trs = target._private.rscratch;
          var lw = trs.labelWidth;
          var lh = trs.labelHeight;
          var lx = trs.labelX;
          var ly = trs.labelY;
          var lw2 = lw / 2;
          var lh2 = lh / 2;
          var va = target.pstyle('text-valign').value;
          if (va === 'top') {
            ly -= lh2;
          } else if (va === 'bottom') {
            ly += lh2;
          }
          var ha = target.pstyle('text-halign').value;
          if (ha === 'left') {
            lx -= lw2;
          } else if (ha === 'right') {
            lx += lw2;
          }
          var labelIntersect = polygonIntersectLine(p1_i[0], p1_i[1], [lx - lw2, ly - lh2, lx + lw2, ly - lh2, lx + lw2, ly + lh2, lx - lw2, ly + lh2], tgtPos.x, tgtPos.y);
          if (labelIntersect.length > 0) {
            var refPt = srcPos;
            var intSqdist = sqdist(refPt, array2point(intersect));
            var labIntSqdist = sqdist(refPt, array2point(labelIntersect));
            var minSqDist = intSqdist;
            if (labIntSqdist < intSqdist) {
              intersect = labelIntersect;
              minSqDist = labIntSqdist;
            }
            if (labelIntersect.length > 2) {
              var labInt2SqDist = sqdist(refPt, {
                x: labelIntersect[2],
                y: labelIntersect[3]
              });
              if (labInt2SqDist < minSqDist) {
                intersect = [labelIntersect[2], labelIntersect[3]];
              }
            }
          }
        }
      }
      var arrowEnd = shortenIntersection(intersect, p1, r.arrowShapes[tgtArShape].spacing(edge) + tgtDist);
      var edgeEnd = shortenIntersection(intersect, p1, r.arrowShapes[tgtArShape].gap(edge) + tgtDist);
      rs.endX = edgeEnd[0];
      rs.endY = edgeEnd[1];
      rs.arrowEndX = arrowEnd[0];
      rs.arrowEndY = arrowEnd[1];
      if (srcManEndptVal === 'inside-to-node') {
        intersect = [srcPos.x, srcPos.y];
      } else if (srcManEndpt.units) {
        intersect = this.manualEndptToPx(source, srcManEndpt);
      } else if (srcManEndptVal === 'outside-to-line') {
        intersect = rs.srcIntn; // use cached value from ctrlpt calc
      } else {
        if (srcManEndptVal === 'outside-to-node' || srcManEndptVal === 'outside-to-node-or-label') {
          p2_i = p2;
        } else if (srcManEndptVal === 'outside-to-line' || srcManEndptVal === 'outside-to-line-or-label') {
          p2_i = [tgtPos.x, tgtPos.y];
        }
        intersect = r.nodeShapes[this.getNodeShape(source)].intersectLine(srcPos.x, srcPos.y, source.outerWidth(), source.outerHeight(), p2_i[0], p2_i[1], 0, srcCornerRadius, srcRs);
        if (srcManEndptVal === 'outside-to-node-or-label' || srcManEndptVal === 'outside-to-line-or-label') {
          var srs = source._private.rscratch;
          var _lw = srs.labelWidth;
          var _lh = srs.labelHeight;
          var _lx = srs.labelX;
          var _ly = srs.labelY;
          var _lw2 = _lw / 2;
          var _lh2 = _lh / 2;
          var _va = source.pstyle('text-valign').value;
          if (_va === 'top') {
            _ly -= _lh2;
          } else if (_va === 'bottom') {
            _ly += _lh2;
          }
          var _ha = source.pstyle('text-halign').value;
          if (_ha === 'left') {
            _lx -= _lw2;
          } else if (_ha === 'right') {
            _lx += _lw2;
          }
          var _labelIntersect = polygonIntersectLine(p2_i[0], p2_i[1], [_lx - _lw2, _ly - _lh2, _lx + _lw2, _ly - _lh2, _lx + _lw2, _ly + _lh2, _lx - _lw2, _ly + _lh2], srcPos.x, srcPos.y);
          if (_labelIntersect.length > 0) {
            var _refPt = tgtPos;
            var _intSqdist = sqdist(_refPt, array2point(intersect));
            var _labIntSqdist = sqdist(_refPt, array2point(_labelIntersect));
            var _minSqDist = _intSqdist;
            if (_labIntSqdist < _intSqdist) {
              intersect = [_labelIntersect[0], _labelIntersect[1]];
              _minSqDist = _labIntSqdist;
            }
            if (_labelIntersect.length > 2) {
              var _labInt2SqDist = sqdist(_refPt, {
                x: _labelIntersect[2],
                y: _labelIntersect[3]
              });
              if (_labInt2SqDist < _minSqDist) {
                intersect = [_labelIntersect[2], _labelIntersect[3]];
              }
            }
          }
        }
      }
      var arrowStart = shortenIntersection(intersect, p2, r.arrowShapes[srcArShape].spacing(edge) + srcDist);
      var edgeStart = shortenIntersection(intersect, p2, r.arrowShapes[srcArShape].gap(edge) + srcDist);
      rs.startX = edgeStart[0];
      rs.startY = edgeStart[1];
      rs.arrowStartX = arrowStart[0];
      rs.arrowStartY = arrowStart[1];
      if (hasEndpts) {
        if (!number$1(rs.startX) || !number$1(rs.startY) || !number$1(rs.endX) || !number$1(rs.endY)) {
          rs.badLine = true;
        } else {
          rs.badLine = false;
        }
      }
    };
    BRp$b.getSourceEndpoint = function (edge) {
      var rs = edge[0]._private.rscratch;
      this.recalculateRenderedStyle(edge);
      switch (rs.edgeType) {
        case 'haystack':
          return {
            x: rs.haystackPts[0],
            y: rs.haystackPts[1]
          };
        default:
          return {
            x: rs.arrowStartX,
            y: rs.arrowStartY
          };
      }
    };
    BRp$b.getTargetEndpoint = function (edge) {
      var rs = edge[0]._private.rscratch;
      this.recalculateRenderedStyle(edge);
      switch (rs.edgeType) {
        case 'haystack':
          return {
            x: rs.haystackPts[2],
            y: rs.haystackPts[3]
          };
        default:
          return {
            x: rs.arrowEndX,
            y: rs.arrowEndY
          };
      }
    };

    var BRp$a = {};
    function pushBezierPts(r, edge, pts) {
      var qbezierAt$1 = function qbezierAt$1(p1, p2, p3, t) {
        return qbezierAt(p1, p2, p3, t);
      };
      var _p = edge._private;
      var bpts = _p.rstyle.bezierPts;
      for (var i = 0; i < r.bezierProjPcts.length; i++) {
        var p = r.bezierProjPcts[i];
        bpts.push({
          x: qbezierAt$1(pts[0], pts[2], pts[4], p),
          y: qbezierAt$1(pts[1], pts[3], pts[5], p)
        });
      }
    }
    BRp$a.storeEdgeProjections = function (edge) {
      var _p = edge._private;
      var rs = _p.rscratch;
      var et = rs.edgeType;

      // clear the cached points state
      _p.rstyle.bezierPts = null;
      _p.rstyle.linePts = null;
      _p.rstyle.haystackPts = null;
      if (et === 'multibezier' || et === 'bezier' || et === 'self' || et === 'compound') {
        _p.rstyle.bezierPts = [];
        for (var i = 0; i + 5 < rs.allpts.length; i += 4) {
          pushBezierPts(this, edge, rs.allpts.slice(i, i + 6));
        }
      } else if (et === 'segments') {
        var lpts = _p.rstyle.linePts = [];
        for (var i = 0; i + 1 < rs.allpts.length; i += 2) {
          lpts.push({
            x: rs.allpts[i],
            y: rs.allpts[i + 1]
          });
        }
      } else if (et === 'haystack') {
        var hpts = rs.haystackPts;
        _p.rstyle.haystackPts = [{
          x: hpts[0],
          y: hpts[1]
        }, {
          x: hpts[2],
          y: hpts[3]
        }];
      }
      _p.rstyle.arrowWidth = this.getArrowWidth(edge.pstyle('width').pfValue, edge.pstyle('arrow-scale').value) * this.arrowShapeWidth;
    };
    BRp$a.recalculateEdgeProjections = function (edges) {
      this.findEdgeControlPoints(edges);
    };

    /* global document */

    var BRp$9 = {};
    BRp$9.recalculateNodeLabelProjection = function (node) {
      var content = node.pstyle('label').strValue;
      if (emptyString(content)) {
        return;
      }
      var textX, textY;
      var _p = node._private;
      var nodeWidth = node.width();
      var nodeHeight = node.height();
      var padding = node.padding();
      var nodePos = node.position();
      var textHalign = node.pstyle('text-halign').strValue;
      var textValign = node.pstyle('text-valign').strValue;
      var rs = _p.rscratch;
      var rstyle = _p.rstyle;
      switch (textHalign) {
        case 'left':
          textX = nodePos.x - nodeWidth / 2 - padding;
          break;
        case 'right':
          textX = nodePos.x + nodeWidth / 2 + padding;
          break;
        default:
          // e.g. center
          textX = nodePos.x;
      }
      switch (textValign) {
        case 'top':
          textY = nodePos.y - nodeHeight / 2 - padding;
          break;
        case 'bottom':
          textY = nodePos.y + nodeHeight / 2 + padding;
          break;
        default:
          // e.g. middle
          textY = nodePos.y;
      }
      rs.labelX = textX;
      rs.labelY = textY;
      rstyle.labelX = textX;
      rstyle.labelY = textY;
      this.calculateLabelAngles(node);
      this.applyLabelDimensions(node);
    };
    var lineAngleFromDelta = function lineAngleFromDelta(dx, dy) {
      var angle = Math.atan(dy / dx);
      if (dx === 0 && angle < 0) {
        angle = angle * -1;
      }
      return angle;
    };
    var lineAngle = function lineAngle(p0, p1) {
      var dx = p1.x - p0.x;
      var dy = p1.y - p0.y;
      return lineAngleFromDelta(dx, dy);
    };
    var bezierAngle = function bezierAngle(p0, p1, p2, t) {
      var t0 = bound(0, t - 0.001, 1);
      var t1 = bound(0, t + 0.001, 1);
      var lp0 = qbezierPtAt(p0, p1, p2, t0);
      var lp1 = qbezierPtAt(p0, p1, p2, t1);
      return lineAngle(lp0, lp1);
    };
    BRp$9.recalculateEdgeLabelProjections = function (edge) {
      var p;
      var _p = edge._private;
      var rs = _p.rscratch;
      var r = this;
      var content = {
        mid: edge.pstyle('label').strValue,
        source: edge.pstyle('source-label').strValue,
        target: edge.pstyle('target-label').strValue
      };
      if (content.mid || content.source || content.target) ; else {
        return; // no labels => no calcs
      }

      // add center point to style so bounding box calculations can use it
      //
      p = {
        x: rs.midX,
        y: rs.midY
      };
      var setRs = function setRs(propName, prefix, value) {
        setPrefixedProperty(_p.rscratch, propName, prefix, value);
        setPrefixedProperty(_p.rstyle, propName, prefix, value);
      };
      setRs('labelX', null, p.x);
      setRs('labelY', null, p.y);
      var midAngle = lineAngleFromDelta(rs.midDispX, rs.midDispY);
      setRs('labelAutoAngle', null, midAngle);
      var createControlPointInfo = function createControlPointInfo() {
        if (createControlPointInfo.cache) {
          return createControlPointInfo.cache;
        } // use cache so only 1x per edge

        var ctrlpts = [];

        // store each ctrlpt info init
        for (var i = 0; i + 5 < rs.allpts.length; i += 4) {
          var p0 = {
            x: rs.allpts[i],
            y: rs.allpts[i + 1]
          };
          var p1 = {
            x: rs.allpts[i + 2],
            y: rs.allpts[i + 3]
          }; // ctrlpt
          var p2 = {
            x: rs.allpts[i + 4],
            y: rs.allpts[i + 5]
          };
          ctrlpts.push({
            p0: p0,
            p1: p1,
            p2: p2,
            startDist: 0,
            length: 0,
            segments: []
          });
        }
        var bpts = _p.rstyle.bezierPts;
        var nProjs = r.bezierProjPcts.length;
        function addSegment(cp, p0, p1, t0, t1) {
          var length = dist(p0, p1);
          var prevSegment = cp.segments[cp.segments.length - 1];
          var segment = {
            p0: p0,
            p1: p1,
            t0: t0,
            t1: t1,
            startDist: prevSegment ? prevSegment.startDist + prevSegment.length : 0,
            length: length
          };
          cp.segments.push(segment);
          cp.length += length;
        }

        // update each ctrlpt with segment info
        for (var _i = 0; _i < ctrlpts.length; _i++) {
          var cp = ctrlpts[_i];
          var prevCp = ctrlpts[_i - 1];
          if (prevCp) {
            cp.startDist = prevCp.startDist + prevCp.length;
          }
          addSegment(cp, cp.p0, bpts[_i * nProjs], 0, r.bezierProjPcts[0]); // first

          for (var j = 0; j < nProjs - 1; j++) {
            addSegment(cp, bpts[_i * nProjs + j], bpts[_i * nProjs + j + 1], r.bezierProjPcts[j], r.bezierProjPcts[j + 1]);
          }
          addSegment(cp, bpts[_i * nProjs + nProjs - 1], cp.p2, r.bezierProjPcts[nProjs - 1], 1); // last
        }

        return createControlPointInfo.cache = ctrlpts;
      };
      var calculateEndProjection = function calculateEndProjection(prefix) {
        var angle;
        var isSrc = prefix === 'source';
        if (!content[prefix]) {
          return;
        }
        var offset = edge.pstyle(prefix + '-text-offset').pfValue;
        switch (rs.edgeType) {
          case 'self':
          case 'compound':
          case 'bezier':
          case 'multibezier':
            {
              var cps = createControlPointInfo();
              var selected;
              var startDist = 0;
              var totalDist = 0;

              // find the segment we're on
              for (var i = 0; i < cps.length; i++) {
                var _cp = cps[isSrc ? i : cps.length - 1 - i];
                for (var j = 0; j < _cp.segments.length; j++) {
                  var _seg = _cp.segments[isSrc ? j : _cp.segments.length - 1 - j];
                  var lastSeg = i === cps.length - 1 && j === _cp.segments.length - 1;
                  startDist = totalDist;
                  totalDist += _seg.length;
                  if (totalDist >= offset || lastSeg) {
                    selected = {
                      cp: _cp,
                      segment: _seg
                    };
                    break;
                  }
                }
                if (selected) {
                  break;
                }
              }
              var cp = selected.cp;
              var seg = selected.segment;
              var tSegment = (offset - startDist) / seg.length;
              var segDt = seg.t1 - seg.t0;
              var t = isSrc ? seg.t0 + segDt * tSegment : seg.t1 - segDt * tSegment;
              t = bound(0, t, 1);
              p = qbezierPtAt(cp.p0, cp.p1, cp.p2, t);
              angle = bezierAngle(cp.p0, cp.p1, cp.p2, t);
              break;
            }
          case 'straight':
          case 'segments':
          case 'haystack':
            {
              var d = 0,
                di,
                d0;
              var p0, p1;
              var l = rs.allpts.length;
              for (var _i2 = 0; _i2 + 3 < l; _i2 += 2) {
                if (isSrc) {
                  p0 = {
                    x: rs.allpts[_i2],
                    y: rs.allpts[_i2 + 1]
                  };
                  p1 = {
                    x: rs.allpts[_i2 + 2],
                    y: rs.allpts[_i2 + 3]
                  };
                } else {
                  p0 = {
                    x: rs.allpts[l - 2 - _i2],
                    y: rs.allpts[l - 1 - _i2]
                  };
                  p1 = {
                    x: rs.allpts[l - 4 - _i2],
                    y: rs.allpts[l - 3 - _i2]
                  };
                }
                di = dist(p0, p1);
                d0 = d;
                d += di;
                if (d >= offset) {
                  break;
                }
              }
              var pD = offset - d0;
              var _t = pD / di;
              _t = bound(0, _t, 1);
              p = lineAt(p0, p1, _t);
              angle = lineAngle(p0, p1);
              break;
            }
        }
        setRs('labelX', prefix, p.x);
        setRs('labelY', prefix, p.y);
        setRs('labelAutoAngle', prefix, angle);
      };
      calculateEndProjection('source');
      calculateEndProjection('target');
      this.applyLabelDimensions(edge);
    };
    BRp$9.applyLabelDimensions = function (ele) {
      this.applyPrefixedLabelDimensions(ele);
      if (ele.isEdge()) {
        this.applyPrefixedLabelDimensions(ele, 'source');
        this.applyPrefixedLabelDimensions(ele, 'target');
      }
    };
    BRp$9.applyPrefixedLabelDimensions = function (ele, prefix) {
      var _p = ele._private;
      var text = this.getLabelText(ele, prefix);
      var labelDims = this.calculateLabelDimensions(ele, text);
      var lineHeight = ele.pstyle('line-height').pfValue;
      var textWrap = ele.pstyle('text-wrap').strValue;
      var lines = getPrefixedProperty(_p.rscratch, 'labelWrapCachedLines', prefix) || [];
      var numLines = textWrap !== 'wrap' ? 1 : Math.max(lines.length, 1);
      var normPerLineHeight = labelDims.height / numLines;
      var labelLineHeight = normPerLineHeight * lineHeight;
      var width = labelDims.width;
      var height = labelDims.height + (numLines - 1) * (lineHeight - 1) * normPerLineHeight;
      setPrefixedProperty(_p.rstyle, 'labelWidth', prefix, width);
      setPrefixedProperty(_p.rscratch, 'labelWidth', prefix, width);
      setPrefixedProperty(_p.rstyle, 'labelHeight', prefix, height);
      setPrefixedProperty(_p.rscratch, 'labelHeight', prefix, height);
      setPrefixedProperty(_p.rscratch, 'labelLineHeight', prefix, labelLineHeight);
    };
    BRp$9.getLabelText = function (ele, prefix) {
      var _p = ele._private;
      var pfd = prefix ? prefix + '-' : '';
      var text = ele.pstyle(pfd + 'label').strValue;
      var textTransform = ele.pstyle('text-transform').value;
      var rscratch = function rscratch(propName, value) {
        if (value) {
          setPrefixedProperty(_p.rscratch, propName, prefix, value);
          return value;
        } else {
          return getPrefixedProperty(_p.rscratch, propName, prefix);
        }
      };

      // for empty text, skip all processing
      if (!text) {
        return '';
      }
      if (textTransform == 'none') ; else if (textTransform == 'uppercase') {
        text = text.toUpperCase();
      } else if (textTransform == 'lowercase') {
        text = text.toLowerCase();
      }
      var wrapStyle = ele.pstyle('text-wrap').value;
      if (wrapStyle === 'wrap') {
        var labelKey = rscratch('labelKey');

        // save recalc if the label is the same as before
        if (labelKey != null && rscratch('labelWrapKey') === labelKey) {
          return rscratch('labelWrapCachedText');
        }
        var zwsp = "\u200B";
        var lines = text.split('\n');
        var maxW = ele.pstyle('text-max-width').pfValue;
        var overflow = ele.pstyle('text-overflow-wrap').value;
        var overflowAny = overflow === 'anywhere';
        var wrappedLines = [];
        var wordsRegex = /[\s\u200b]+/;
        var wordSeparator = overflowAny ? '' : ' ';
        for (var l = 0; l < lines.length; l++) {
          var line = lines[l];
          var lineDims = this.calculateLabelDimensions(ele, line);
          var lineW = lineDims.width;
          if (overflowAny) {
            var processedLine = line.split('').join(zwsp);
            line = processedLine;
          }
          if (lineW > maxW) {
            // line is too long
            var words = line.split(wordsRegex);
            var subline = '';
            for (var w = 0; w < words.length; w++) {
              var word = words[w];
              var testLine = subline.length === 0 ? word : subline + wordSeparator + word;
              var testDims = this.calculateLabelDimensions(ele, testLine);
              var testW = testDims.width;
              if (testW <= maxW) {
                // word fits on current line
                subline += word + wordSeparator;
              } else {
                // word starts new line
                if (subline) {
                  wrappedLines.push(subline);
                }
                subline = word + wordSeparator;
              }
            }

            // if there's remaining text, put it in a wrapped line
            if (!subline.match(/^[\s\u200b]+$/)) {
              wrappedLines.push(subline);
            }
          } else {
            // line is already short enough
            wrappedLines.push(line);
          }
        } // for

        rscratch('labelWrapCachedLines', wrappedLines);
        text = rscratch('labelWrapCachedText', wrappedLines.join('\n'));
        rscratch('labelWrapKey', labelKey);
      } else if (wrapStyle === 'ellipsis') {
        var _maxW = ele.pstyle('text-max-width').pfValue;
        var ellipsized = '';
        var ellipsis = "\u2026";
        var incLastCh = false;
        if (this.calculateLabelDimensions(ele, text).width < _maxW) {
          // the label already fits
          return text;
        }
        for (var i = 0; i < text.length; i++) {
          var widthWithNextCh = this.calculateLabelDimensions(ele, ellipsized + text[i] + ellipsis).width;
          if (widthWithNextCh > _maxW) {
            break;
          }
          ellipsized += text[i];
          if (i === text.length - 1) {
            incLastCh = true;
          }
        }
        if (!incLastCh) {
          ellipsized += ellipsis;
        }
        return ellipsized;
      } // if ellipsize

      return text;
    };
    BRp$9.getLabelJustification = function (ele) {
      var justification = ele.pstyle('text-justification').strValue;
      var textHalign = ele.pstyle('text-halign').strValue;
      if (justification === 'auto') {
        if (ele.isNode()) {
          switch (textHalign) {
            case 'left':
              return 'right';
            case 'right':
              return 'left';
            default:
              return 'center';
          }
        } else {
          return 'center';
        }
      } else {
        return justification;
      }
    };
    BRp$9.calculateLabelDimensions = function (ele, text) {
      var r = this;
      var cacheKey = hashString(text, ele._private.labelDimsKey);
      var cache = r.labelDimCache || (r.labelDimCache = []);
      var existingVal = cache[cacheKey];
      if (existingVal != null) {
        return existingVal;
      }
      var padding = 0; // add padding around text dims, as the measurement isn't that accurate
      var fStyle = ele.pstyle('font-style').strValue;
      var size = ele.pstyle('font-size').pfValue;
      var family = ele.pstyle('font-family').strValue;
      var weight = ele.pstyle('font-weight').strValue;
      var canvas = this.labelCalcCanvas;
      var c2d = this.labelCalcCanvasContext;
      if (!canvas) {
        canvas = this.labelCalcCanvas = document.createElement('canvas');
        c2d = this.labelCalcCanvasContext = canvas.getContext('2d');
        var ds = canvas.style;
        ds.position = 'absolute';
        ds.left = '-9999px';
        ds.top = '-9999px';
        ds.zIndex = '-1';
        ds.visibility = 'hidden';
        ds.pointerEvents = 'none';
      }
      c2d.font = "".concat(fStyle, " ").concat(weight, " ").concat(size, "px ").concat(family);
      var width = 0;
      var height = 0;
      var lines = text.split('\n');
      for (var i = 0; i < lines.length; i++) {
        var line = lines[i];
        var metrics = c2d.measureText(line);
        var w = Math.ceil(metrics.width);
        var h = size;
        width = Math.max(w, width);
        height += h;
      }
      width += padding;
      height += padding;
      return cache[cacheKey] = {
        width: width,
        height: height
      };
    };
    BRp$9.calculateLabelAngle = function (ele, prefix) {
      var _p = ele._private;
      var rs = _p.rscratch;
      var isEdge = ele.isEdge();
      var prefixDash = prefix ? prefix + '-' : '';
      var rot = ele.pstyle(prefixDash + 'text-rotation');
      var rotStr = rot.strValue;
      if (rotStr === 'none') {
        return 0;
      } else if (isEdge && rotStr === 'autorotate') {
        return rs.labelAutoAngle;
      } else if (rotStr === 'autorotate') {
        return 0;
      } else {
        return rot.pfValue;
      }
    };
    BRp$9.calculateLabelAngles = function (ele) {
      var r = this;
      var isEdge = ele.isEdge();
      var _p = ele._private;
      var rs = _p.rscratch;
      rs.labelAngle = r.calculateLabelAngle(ele);
      if (isEdge) {
        rs.sourceLabelAngle = r.calculateLabelAngle(ele, 'source');
        rs.targetLabelAngle = r.calculateLabelAngle(ele, 'target');
      }
    };

    var BRp$8 = {};
    var TOO_SMALL_CUT_RECT = 28;
    var warnedCutRect = false;
    BRp$8.getNodeShape = function (node) {
      var r = this;
      var shape = node.pstyle('shape').value;
      if (shape === 'cutrectangle' && (node.width() < TOO_SMALL_CUT_RECT || node.height() < TOO_SMALL_CUT_RECT)) {
        if (!warnedCutRect) {
          warn('The `cutrectangle` node shape can not be used at small sizes so `rectangle` is used instead');
          warnedCutRect = true;
        }
        return 'rectangle';
      }
      if (node.isParent()) {
        if (shape === 'rectangle' || shape === 'roundrectangle' || shape === 'round-rectangle' || shape === 'cutrectangle' || shape === 'cut-rectangle' || shape === 'barrel') {
          return shape;
        } else {
          return 'rectangle';
        }
      }
      if (shape === 'polygon') {
        var points = node.pstyle('shape-polygon-points').value;
        return r.nodeShapes.makePolygon(points).name;
      }
      return shape;
    };

    var BRp$7 = {};
    BRp$7.registerCalculationListeners = function () {
      var cy = this.cy;
      var elesToUpdate = cy.collection();
      var r = this;
      var enqueue = function enqueue(eles) {
        var dirtyStyleCaches = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
        elesToUpdate.merge(eles);
        if (dirtyStyleCaches) {
          for (var i = 0; i < eles.length; i++) {
            var ele = eles[i];
            var _p = ele._private;
            var rstyle = _p.rstyle;
            rstyle.clean = false;
            rstyle.cleanConnected = false;
          }
        }
      };
      r.binder(cy).on('bounds.* dirty.*', function onDirtyBounds(e) {
        var ele = e.target;
        enqueue(ele);
      }).on('style.* background.*', function onDirtyStyle(e) {
        var ele = e.target;
        enqueue(ele, false);
      });
      var updateEleCalcs = function updateEleCalcs(willDraw) {
        if (willDraw) {
          var fns = r.onUpdateEleCalcsFns;

          // because we need to have up-to-date style (e.g. stylesheet mappers)
          // before calculating rendered style (and pstyle might not be called yet)
          elesToUpdate.cleanStyle();
          for (var i = 0; i < elesToUpdate.length; i++) {
            var ele = elesToUpdate[i];
            var rstyle = ele._private.rstyle;
            if (ele.isNode() && !rstyle.cleanConnected) {
              enqueue(ele.connectedEdges());
              rstyle.cleanConnected = true;
            }
          }
          if (fns) {
            for (var _i = 0; _i < fns.length; _i++) {
              var fn = fns[_i];
              fn(willDraw, elesToUpdate);
            }
          }
          r.recalculateRenderedStyle(elesToUpdate);
          elesToUpdate = cy.collection();
        }
      };
      r.flushRenderedStyleQueue = function () {
        updateEleCalcs(true);
      };
      r.beforeRender(updateEleCalcs, r.beforeRenderPriorities.eleCalcs);
    };
    BRp$7.onUpdateEleCalcs = function (fn) {
      var fns = this.onUpdateEleCalcsFns = this.onUpdateEleCalcsFns || [];
      fns.push(fn);
    };
    BRp$7.recalculateRenderedStyle = function (eles, useCache) {
      var isCleanConnected = function isCleanConnected(ele) {
        return ele._private.rstyle.cleanConnected;
      };
      var edges = [];
      var nodes = [];

      // the renderer can't be used for calcs when destroyed, e.g. ele.boundingBox()
      if (this.destroyed) {
        return;
      }

      // use cache by default for perf
      if (useCache === undefined) {
        useCache = true;
      }
      for (var i = 0; i < eles.length; i++) {
        var ele = eles[i];
        var _p = ele._private;
        var rstyle = _p.rstyle;

        // an edge may be implicitly dirty b/c of one of its connected nodes
        // (and a request for recalc may come in between frames)
        if (ele.isEdge() && (!isCleanConnected(ele.source()) || !isCleanConnected(ele.target()))) {
          rstyle.clean = false;
        }

        // only update if dirty and in graph
        if (useCache && rstyle.clean || ele.removed()) {
          continue;
        }

        // only update if not display: none
        if (ele.pstyle('display').value === 'none') {
          continue;
        }
        if (_p.group === 'nodes') {
          nodes.push(ele);
        } else {
          // edges
          edges.push(ele);
        }
        rstyle.clean = true;
      }

      // update node data from projections
      for (var _i2 = 0; _i2 < nodes.length; _i2++) {
        var _ele = nodes[_i2];
        var _p2 = _ele._private;
        var _rstyle = _p2.rstyle;
        var pos = _ele.position();
        this.recalculateNodeLabelProjection(_ele);
        _rstyle.nodeX = pos.x;
        _rstyle.nodeY = pos.y;
        _rstyle.nodeW = _ele.pstyle('width').pfValue;
        _rstyle.nodeH = _ele.pstyle('height').pfValue;
      }
      this.recalculateEdgeProjections(edges);

      // update edge data from projections
      for (var _i3 = 0; _i3 < edges.length; _i3++) {
        var _ele2 = edges[_i3];
        var _p3 = _ele2._private;
        var _rstyle2 = _p3.rstyle;
        var rs = _p3.rscratch;

        // update rstyle positions
        _rstyle2.srcX = rs.arrowStartX;
        _rstyle2.srcY = rs.arrowStartY;
        _rstyle2.tgtX = rs.arrowEndX;
        _rstyle2.tgtY = rs.arrowEndY;
        _rstyle2.midX = rs.midX;
        _rstyle2.midY = rs.midY;
        _rstyle2.labelAngle = rs.labelAngle;
        _rstyle2.sourceLabelAngle = rs.sourceLabelAngle;
        _rstyle2.targetLabelAngle = rs.targetLabelAngle;
      }
    };

    var BRp$6 = {};
    BRp$6.updateCachedGrabbedEles = function () {
      var eles = this.cachedZSortedEles;
      if (!eles) {
        // just let this be recalculated on the next z sort tick
        return;
      }
      eles.drag = [];
      eles.nondrag = [];
      var grabTargets = [];
      for (var i = 0; i < eles.length; i++) {
        var ele = eles[i];
        var rs = ele._private.rscratch;
        if (ele.grabbed() && !ele.isParent()) {
          grabTargets.push(ele);
        } else if (rs.inDragLayer) {
          eles.drag.push(ele);
        } else {
          eles.nondrag.push(ele);
        }
      }

      // put the grab target nodes last so it's on top of its neighbourhood
      for (var i = 0; i < grabTargets.length; i++) {
        var ele = grabTargets[i];
        eles.drag.push(ele);
      }
    };
    BRp$6.invalidateCachedZSortedEles = function () {
      this.cachedZSortedEles = null;
    };
    BRp$6.getCachedZSortedEles = function (forceRecalc) {
      if (forceRecalc || !this.cachedZSortedEles) {
        var eles = this.cy.mutableElements().toArray();
        eles.sort(zIndexSort);
        eles.interactive = eles.filter(function (ele) {
          return ele.interactive();
        });
        this.cachedZSortedEles = eles;
        this.updateCachedGrabbedEles();
      } else {
        eles = this.cachedZSortedEles;
      }
      return eles;
    };

    var BRp$5 = {};
    [BRp$e, BRp$d, BRp$c, BRp$b, BRp$a, BRp$9, BRp$8, BRp$7, BRp$6].forEach(function (props) {
      extend$1(BRp$5, props);
    });

    var BRp$4 = {};
    BRp$4.getCachedImage = function (url, crossOrigin, onLoad) {
      var r = this;
      var imageCache = r.imageCache = r.imageCache || {};
      var cache = imageCache[url];
      if (cache) {
        if (!cache.image.complete) {
          cache.image.addEventListener('load', onLoad);
        }
        return cache.image;
      } else {
        cache = imageCache[url] = imageCache[url] || {};
        var image = cache.image = new Image(); // eslint-disable-line no-undef

        image.addEventListener('load', onLoad);
        image.addEventListener('error', function () {
          image.error = true;
        });

        // #1582 safari doesn't load data uris with crossOrigin properly
        // https://bugs.webkit.org/show_bug.cgi?id=123978
        var dataUriPrefix = 'data:';
        var isDataUri = url.substring(0, dataUriPrefix.length).toLowerCase() === dataUriPrefix;
        if (!isDataUri) {
          // if crossorigin is 'null'(stringified), then manually set it to null 
          crossOrigin = crossOrigin === 'null' ? null : crossOrigin;
          image.crossOrigin = crossOrigin; // prevent tainted canvas
        }

        image.src = url;
        return image;
      }
    };

    var BRp$3 = {};

    /* global document, window, ResizeObserver, MutationObserver */

    BRp$3.registerBinding = function (target, event, handler, useCapture) {
      // eslint-disable-line no-unused-vars
      var args = Array.prototype.slice.apply(arguments, [1]); // copy
      var b = this.binder(target);
      return b.on.apply(b, args);
    };
    BRp$3.binder = function (tgt) {
      var r = this;
      var containerWindow = r.cy.window();
      var tgtIsDom = tgt === containerWindow || tgt === containerWindow.document || tgt === containerWindow.document.body || domElement(tgt);
      if (r.supportsPassiveEvents == null) {
        // from https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md#feature-detection
        var supportsPassive = false;
        try {
          var opts = Object.defineProperty({}, 'passive', {
            get: function get() {
              supportsPassive = true;
              return true;
            }
          });
          containerWindow.addEventListener('test', null, opts);
        } catch (err) {
          // not supported
        }
        r.supportsPassiveEvents = supportsPassive;
      }
      var on = function on(event, handler, useCapture) {
        var args = Array.prototype.slice.call(arguments);
        if (tgtIsDom && r.supportsPassiveEvents) {
          // replace useCapture w/ opts obj
          args[2] = {
            capture: useCapture != null ? useCapture : false,
            passive: false,
            once: false
          };
        }
        r.bindings.push({
          target: tgt,
          args: args
        });
        (tgt.addEventListener || tgt.on).apply(tgt, args);
        return this;
      };
      return {
        on: on,
        addEventListener: on,
        addListener: on,
        bind: on
      };
    };
    BRp$3.nodeIsDraggable = function (node) {
      return node && node.isNode() && !node.locked() && node.grabbable();
    };
    BRp$3.nodeIsGrabbable = function (node) {
      return this.nodeIsDraggable(node) && node.interactive();
    };
    BRp$3.load = function () {
      var r = this;
      var containerWindow = r.cy.window();
      var isSelected = function isSelected(ele) {
        return ele.selected();
      };
      var triggerEvents = function triggerEvents(target, names, e, position) {
        if (target == null) {
          target = r.cy;
        }
        for (var i = 0; i < names.length; i++) {
          var name = names[i];
          target.emit({
            originalEvent: e,
            type: name,
            position: position
          });
        }
      };
      var isMultSelKeyDown = function isMultSelKeyDown(e) {
        return e.shiftKey || e.metaKey || e.ctrlKey; // maybe e.altKey
      };

      var allowPanningPassthrough = function allowPanningPassthrough(down, downs) {
        var allowPassthrough = true;
        if (r.cy.hasCompoundNodes() && down && down.pannable()) {
          // a grabbable compound node below the ele => no passthrough panning
          for (var i = 0; downs && i < downs.length; i++) {
            var down = downs[i];

            //if any parent node in event hierarchy isn't pannable, reject passthrough
            if (down.isNode() && down.isParent() && !down.pannable()) {
              allowPassthrough = false;
              break;
            }
          }
        } else {
          allowPassthrough = true;
        }
        return allowPassthrough;
      };
      var setGrabbed = function setGrabbed(ele) {
        ele[0]._private.grabbed = true;
      };
      var setFreed = function setFreed(ele) {
        ele[0]._private.grabbed = false;
      };
      var setInDragLayer = function setInDragLayer(ele) {
        ele[0]._private.rscratch.inDragLayer = true;
      };
      var setOutDragLayer = function setOutDragLayer(ele) {
        ele[0]._private.rscratch.inDragLayer = false;
      };
      var setGrabTarget = function setGrabTarget(ele) {
        ele[0]._private.rscratch.isGrabTarget = true;
      };
      var removeGrabTarget = function removeGrabTarget(ele) {
        ele[0]._private.rscratch.isGrabTarget = false;
      };
      var addToDragList = function addToDragList(ele, opts) {
        var list = opts.addToList;
        var listHasEle = list.has(ele);
        if (!listHasEle && ele.grabbable() && !ele.locked()) {
          list.merge(ele);
          setGrabbed(ele);
        }
      };

      // helper function to determine which child nodes and inner edges
      // of a compound node to be dragged as well as the grabbed and selected nodes
      var addDescendantsToDrag = function addDescendantsToDrag(node, opts) {
        if (!node.cy().hasCompoundNodes()) {
          return;
        }
        if (opts.inDragLayer == null && opts.addToList == null) {
          return;
        } // nothing to do

        var innerNodes = node.descendants();
        if (opts.inDragLayer) {
          innerNodes.forEach(setInDragLayer);
          innerNodes.connectedEdges().forEach(setInDragLayer);
        }
        if (opts.addToList) {
          addToDragList(innerNodes, opts);
        }
      };

      // adds the given nodes and its neighbourhood to the drag layer
      var addNodesToDrag = function addNodesToDrag(nodes, opts) {
        opts = opts || {};
        var hasCompoundNodes = nodes.cy().hasCompoundNodes();
        if (opts.inDragLayer) {
          nodes.forEach(setInDragLayer);
          nodes.neighborhood().stdFilter(function (ele) {
            return !hasCompoundNodes || ele.isEdge();
          }).forEach(setInDragLayer);
        }
        if (opts.addToList) {
          nodes.forEach(function (ele) {
            addToDragList(ele, opts);
          });
        }
        addDescendantsToDrag(nodes, opts); // always add to drag

        // also add nodes and edges related to the topmost ancestor
        updateAncestorsInDragLayer(nodes, {
          inDragLayer: opts.inDragLayer
        });
        r.updateCachedGrabbedEles();
      };
      var addNodeToDrag = addNodesToDrag;
      var freeDraggedElements = function freeDraggedElements(grabbedEles) {
        if (!grabbedEles) {
          return;
        }

        // just go over all elements rather than doing a bunch of (possibly expensive) traversals
        r.getCachedZSortedEles().forEach(function (ele) {
          setFreed(ele);
          setOutDragLayer(ele);
          removeGrabTarget(ele);
        });
        r.updateCachedGrabbedEles();
      };

      // helper function to determine which ancestor nodes and edges should go
      // to the drag layer (or should be removed from drag layer).
      var updateAncestorsInDragLayer = function updateAncestorsInDragLayer(node, opts) {
        if (opts.inDragLayer == null && opts.addToList == null) {
          return;
        } // nothing to do

        if (!node.cy().hasCompoundNodes()) {
          return;
        }

        // find top-level parent
        var parent = node.ancestors().orphans();

        // no parent node: no nodes to add to the drag layer
        if (parent.same(node)) {
          return;
        }
        var nodes = parent.descendants().spawnSelf().merge(parent).unmerge(node).unmerge(node.descendants());
        var edges = nodes.connectedEdges();
        if (opts.inDragLayer) {
          edges.forEach(setInDragLayer);
          nodes.forEach(setInDragLayer);
        }
        if (opts.addToList) {
          nodes.forEach(function (ele) {
            addToDragList(ele, opts);
          });
        }
      };
      var blurActiveDomElement = function blurActiveDomElement() {
        if (document.activeElement != null && document.activeElement.blur != null) {
          document.activeElement.blur();
        }
      };
      var haveMutationsApi = typeof MutationObserver !== 'undefined';
      var haveResizeObserverApi = typeof ResizeObserver !== 'undefined';

      // watch for when the cy container is removed from the dom
      if (haveMutationsApi) {
        r.removeObserver = new MutationObserver(function (mutns) {
          // eslint-disable-line no-undef
          for (var i = 0; i < mutns.length; i++) {
            var mutn = mutns[i];
            var rNodes = mutn.removedNodes;
            if (rNodes) {
              for (var j = 0; j < rNodes.length; j++) {
                var rNode = rNodes[j];
                if (rNode === r.container) {
                  r.destroy();
                  break;
                }
              }
            }
          }
        });
        if (r.container.parentNode) {
          r.removeObserver.observe(r.container.parentNode, {
            childList: true
          });
        }
      } else {
        r.registerBinding(r.container, 'DOMNodeRemoved', function (e) {
          // eslint-disable-line no-unused-vars
          r.destroy();
        });
      }
      var onResize = debounce_1(function () {
        r.cy.resize();
      }, 100);
      if (haveMutationsApi) {
        r.styleObserver = new MutationObserver(onResize); // eslint-disable-line no-undef

        r.styleObserver.observe(r.container, {
          attributes: true
        });
      }

      // auto resize
      r.registerBinding(containerWindow, 'resize', onResize); // eslint-disable-line no-undef

      if (haveResizeObserverApi) {
        r.resizeObserver = new ResizeObserver(onResize); // eslint-disable-line no-undef

        r.resizeObserver.observe(r.container);
      }
      var forEachUp = function forEachUp(domEle, fn) {
        while (domEle != null) {
          fn(domEle);
          domEle = domEle.parentNode;
        }
      };
      var invalidateCoords = function invalidateCoords() {
        r.invalidateContainerClientCoordsCache();
      };
      forEachUp(r.container, function (domEle) {
        r.registerBinding(domEle, 'transitionend', invalidateCoords);
        r.registerBinding(domEle, 'animationend', invalidateCoords);
        r.registerBinding(domEle, 'scroll', invalidateCoords);
      });

      // stop right click menu from appearing on cy
      r.registerBinding(r.container, 'contextmenu', function (e) {
        e.preventDefault();
      });
      var inBoxSelection = function inBoxSelection() {
        return r.selection[4] !== 0;
      };
      var eventInContainer = function eventInContainer(e) {
        // save cycles if mouse events aren't to be captured
        var containerPageCoords = r.findContainerClientCoords();
        var x = containerPageCoords[0];
        var y = containerPageCoords[1];
        var width = containerPageCoords[2];
        var height = containerPageCoords[3];
        var positions = e.touches ? e.touches : [e];
        var atLeastOnePosInside = false;
        for (var i = 0; i < positions.length; i++) {
          var p = positions[i];
          if (x <= p.clientX && p.clientX <= x + width && y <= p.clientY && p.clientY <= y + height) {
            atLeastOnePosInside = true;
            break;
          }
        }
        if (!atLeastOnePosInside) {
          return false;
        }
        var container = r.container;
        var target = e.target;
        var tParent = target.parentNode;
        var containerIsTarget = false;
        while (tParent) {
          if (tParent === container) {
            containerIsTarget = true;
            break;
          }
          tParent = tParent.parentNode;
        }
        if (!containerIsTarget) {
          return false;
        } // if target is outisde cy container, then this event is not for us

        return true;
      };

      // Primary key
      r.registerBinding(r.container, 'mousedown', function mousedownHandler(e) {
        if (!eventInContainer(e)) {
          return;
        }
        e.preventDefault();
        blurActiveDomElement();
        r.hoverData.capture = true;
        r.hoverData.which = e.which;
        var cy = r.cy;
        var gpos = [e.clientX, e.clientY];
        var pos = r.projectIntoViewport(gpos[0], gpos[1]);
        var select = r.selection;
        var nears = r.findNearestElements(pos[0], pos[1], true, false);
        var near = nears[0];
        var draggedElements = r.dragData.possibleDragElements;
        r.hoverData.mdownPos = pos;
        r.hoverData.mdownGPos = gpos;
        var checkForTaphold = function checkForTaphold() {
          r.hoverData.tapholdCancelled = false;
          clearTimeout(r.hoverData.tapholdTimeout);
          r.hoverData.tapholdTimeout = setTimeout(function () {
            if (r.hoverData.tapholdCancelled) {
              return;
            } else {
              var ele = r.hoverData.down;
              if (ele) {
                ele.emit({
                  originalEvent: e,
                  type: 'taphold',
                  position: {
                    x: pos[0],
                    y: pos[1]
                  }
                });
              } else {
                cy.emit({
                  originalEvent: e,
                  type: 'taphold',
                  position: {
                    x: pos[0],
                    y: pos[1]
                  }
                });
              }
            }
          }, r.tapholdDuration);
        };

        // Right click button
        if (e.which == 3) {
          r.hoverData.cxtStarted = true;
          var cxtEvt = {
            originalEvent: e,
            type: 'cxttapstart',
            position: {
              x: pos[0],
              y: pos[1]
            }
          };
          if (near) {
            near.activate();
            near.emit(cxtEvt);
            r.hoverData.down = near;
          } else {
            cy.emit(cxtEvt);
          }
          r.hoverData.downTime = new Date().getTime();
          r.hoverData.cxtDragged = false;

          // Primary button
        } else if (e.which == 1) {
          if (near) {
            near.activate();
          }

          // Element dragging
          {
            // If something is under the cursor and it is draggable, prepare to grab it
            if (near != null) {
              if (r.nodeIsGrabbable(near)) {
                var makeEvent = function makeEvent(type) {
                  return {
                    originalEvent: e,
                    type: type,
                    position: {
                      x: pos[0],
                      y: pos[1]
                    }
                  };
                };
                var triggerGrab = function triggerGrab(ele) {
                  ele.emit(makeEvent('grab'));
                };
                setGrabTarget(near);
                if (!near.selected()) {
                  draggedElements = r.dragData.possibleDragElements = cy.collection();
                  addNodeToDrag(near, {
                    addToList: draggedElements
                  });
                  near.emit(makeEvent('grabon')).emit(makeEvent('grab'));
                } else {
                  draggedElements = r.dragData.possibleDragElements = cy.collection();
                  var selectedNodes = cy.$(function (ele) {
                    return ele.isNode() && ele.selected() && r.nodeIsGrabbable(ele);
                  });
                  addNodesToDrag(selectedNodes, {
                    addToList: draggedElements
                  });
                  near.emit(makeEvent('grabon'));
                  selectedNodes.forEach(triggerGrab);
                }
                r.redrawHint('eles', true);
                r.redrawHint('drag', true);
              }
            }
            r.hoverData.down = near;
            r.hoverData.downs = nears;
            r.hoverData.downTime = new Date().getTime();
          }
          triggerEvents(near, ['mousedown', 'tapstart', 'vmousedown'], e, {
            x: pos[0],
            y: pos[1]
          });
          if (near == null) {
            select[4] = 1;
            r.data.bgActivePosistion = {
              x: pos[0],
              y: pos[1]
            };
            r.redrawHint('select', true);
            r.redraw();
          } else if (near.pannable()) {
            select[4] = 1; // for future pan
          }

          checkForTaphold();
        }

        // Initialize selection box coordinates
        select[0] = select[2] = pos[0];
        select[1] = select[3] = pos[1];
      }, false);
      r.registerBinding(containerWindow, 'mousemove', function mousemoveHandler(e) {
        // eslint-disable-line no-undef
        var capture = r.hoverData.capture;
        if (!capture && !eventInContainer(e)) {
          return;
        }
        var preventDefault = false;
        var cy = r.cy;
        var zoom = cy.zoom();
        var gpos = [e.clientX, e.clientY];
        var pos = r.projectIntoViewport(gpos[0], gpos[1]);
        var mdownPos = r.hoverData.mdownPos;
        var mdownGPos = r.hoverData.mdownGPos;
        var select = r.selection;
        var near = null;
        if (!r.hoverData.draggingEles && !r.hoverData.dragging && !r.hoverData.selecting) {
          near = r.findNearestElement(pos[0], pos[1], true, false);
        }
        var last = r.hoverData.last;
        var down = r.hoverData.down;
        var disp = [pos[0] - select[2], pos[1] - select[3]];
        var draggedElements = r.dragData.possibleDragElements;
        var isOverThresholdDrag;
        if (mdownGPos) {
          var dx = gpos[0] - mdownGPos[0];
          var dx2 = dx * dx;
          var dy = gpos[1] - mdownGPos[1];
          var dy2 = dy * dy;
          var dist2 = dx2 + dy2;
          r.hoverData.isOverThresholdDrag = isOverThresholdDrag = dist2 >= r.desktopTapThreshold2;
        }
        var multSelKeyDown = isMultSelKeyDown(e);
        if (isOverThresholdDrag) {
          r.hoverData.tapholdCancelled = true;
        }
        var updateDragDelta = function updateDragDelta() {
          var dragDelta = r.hoverData.dragDelta = r.hoverData.dragDelta || [];
          if (dragDelta.length === 0) {
            dragDelta.push(disp[0]);
            dragDelta.push(disp[1]);
          } else {
            dragDelta[0] += disp[0];
            dragDelta[1] += disp[1];
          }
        };
        preventDefault = true;
        triggerEvents(near, ['mousemove', 'vmousemove', 'tapdrag'], e, {
          x: pos[0],
          y: pos[1]
        });
        var goIntoBoxMode = function goIntoBoxMode() {
          r.data.bgActivePosistion = undefined;
          if (!r.hoverData.selecting) {
            cy.emit({
              originalEvent: e,
              type: 'boxstart',
              position: {
                x: pos[0],
                y: pos[1]
              }
            });
          }
          select[4] = 1;
          r.hoverData.selecting = true;
          r.redrawHint('select', true);
          r.redraw();
        };

        // trigger context drag if rmouse down
        if (r.hoverData.which === 3) {
          // but only if over threshold
          if (isOverThresholdDrag) {
            var cxtEvt = {
              originalEvent: e,
              type: 'cxtdrag',
              position: {
                x: pos[0],
                y: pos[1]
              }
            };
            if (down) {
              down.emit(cxtEvt);
            } else {
              cy.emit(cxtEvt);
            }
            r.hoverData.cxtDragged = true;
            if (!r.hoverData.cxtOver || near !== r.hoverData.cxtOver) {
              if (r.hoverData.cxtOver) {
                r.hoverData.cxtOver.emit({
                  originalEvent: e,
                  type: 'cxtdragout',
                  position: {
                    x: pos[0],
                    y: pos[1]
                  }
                });
              }
              r.hoverData.cxtOver = near;
              if (near) {
                near.emit({
                  originalEvent: e,
                  type: 'cxtdragover',
                  position: {
                    x: pos[0],
                    y: pos[1]
                  }
                });
              }
            }
          }

          // Check if we are drag panning the entire graph
        } else if (r.hoverData.dragging) {
          preventDefault = true;
          if (cy.panningEnabled() && cy.userPanningEnabled()) {
            var deltaP;
            if (r.hoverData.justStartedPan) {
              var mdPos = r.hoverData.mdownPos;
              deltaP = {
                x: (pos[0] - mdPos[0]) * zoom,
                y: (pos[1] - mdPos[1]) * zoom
              };
              r.hoverData.justStartedPan = false;
            } else {
              deltaP = {
                x: disp[0] * zoom,
                y: disp[1] * zoom
              };
            }
            cy.panBy(deltaP);
            cy.emit('dragpan');
            r.hoverData.dragged = true;
          }

          // Needs reproject due to pan changing viewport
          pos = r.projectIntoViewport(e.clientX, e.clientY);

          // Checks primary button down & out of time & mouse not moved much
        } else if (select[4] == 1 && (down == null || down.pannable())) {
          if (isOverThresholdDrag) {
            if (!r.hoverData.dragging && cy.boxSelectionEnabled() && (multSelKeyDown || !cy.panningEnabled() || !cy.userPanningEnabled())) {
              goIntoBoxMode();
            } else if (!r.hoverData.selecting && cy.panningEnabled() && cy.userPanningEnabled()) {
              var allowPassthrough = allowPanningPassthrough(down, r.hoverData.downs);
              if (allowPassthrough) {
                r.hoverData.dragging = true;
                r.hoverData.justStartedPan = true;
                select[4] = 0;
                r.data.bgActivePosistion = array2point(mdownPos);
                r.redrawHint('select', true);
                r.redraw();
              }
            }
            if (down && down.pannable() && down.active()) {
              down.unactivate();
            }
          }
        } else {
          if (down && down.pannable() && down.active()) {
            down.unactivate();
          }
          if ((!down || !down.grabbed()) && near != last) {
            if (last) {
              triggerEvents(last, ['mouseout', 'tapdragout'], e, {
                x: pos[0],
                y: pos[1]
              });
            }
            if (near) {
              triggerEvents(near, ['mouseover', 'tapdragover'], e, {
                x: pos[0],
                y: pos[1]
              });
            }
            r.hoverData.last = near;
          }
          if (down) {
            if (isOverThresholdDrag) {
              // then we can take action

              if (cy.boxSelectionEnabled() && multSelKeyDown) {
                // then selection overrides
                if (down && down.grabbed()) {
                  freeDraggedElements(draggedElements);
                  down.emit('freeon');
                  draggedElements.emit('free');
                  if (r.dragData.didDrag) {
                    down.emit('dragfreeon');
                    draggedElements.emit('dragfree');
                  }
                }
                goIntoBoxMode();
              } else if (down && down.grabbed() && r.nodeIsDraggable(down)) {
                // drag node
                var justStartedDrag = !r.dragData.didDrag;
                if (justStartedDrag) {
                  r.redrawHint('eles', true);
                }
                r.dragData.didDrag = true; // indicate that we actually did drag the node

                // now, add the elements to the drag layer if not done already
                if (!r.hoverData.draggingEles) {
                  addNodesToDrag(draggedElements, {
                    inDragLayer: true
                  });
                }
                var totalShift = {
                  x: 0,
                  y: 0
                };
                if (number$1(disp[0]) && number$1(disp[1])) {
                  totalShift.x += disp[0];
                  totalShift.y += disp[1];
                  if (justStartedDrag) {
                    var dragDelta = r.hoverData.dragDelta;
                    if (dragDelta && number$1(dragDelta[0]) && number$1(dragDelta[1])) {
                      totalShift.x += dragDelta[0];
                      totalShift.y += dragDelta[1];
                    }
                  }
                }
                r.hoverData.draggingEles = true;
                draggedElements.silentShift(totalShift).emit('position drag');
                r.redrawHint('drag', true);
                r.redraw();
              }
            } else {
              // otherwise save drag delta for when we actually start dragging so the relative grab pos is constant
              updateDragDelta();
            }
          }

          // prevent the dragging from triggering text selection on the page
          preventDefault = true;
        }
        select[2] = pos[0];
        select[3] = pos[1];
        if (preventDefault) {
          if (e.stopPropagation) e.stopPropagation();
          if (e.preventDefault) e.preventDefault();
          return false;
        }
      }, false);
      var clickTimeout, didDoubleClick, prevClickTimeStamp;
      r.registerBinding(containerWindow, 'mouseup', function mouseupHandler(e) {
        // eslint-disable-line no-undef
        var capture = r.hoverData.capture;
        if (!capture) {
          return;
        }
        r.hoverData.capture = false;
        var cy = r.cy;
        var pos = r.projectIntoViewport(e.clientX, e.clientY);
        var select = r.selection;
        var near = r.findNearestElement(pos[0], pos[1], true, false);
        var draggedElements = r.dragData.possibleDragElements;
        var down = r.hoverData.down;
        var multSelKeyDown = isMultSelKeyDown(e);
        if (r.data.bgActivePosistion) {
          r.redrawHint('select', true);
          r.redraw();
        }
        r.hoverData.tapholdCancelled = true;
        r.data.bgActivePosistion = undefined; // not active bg now

        if (down) {
          down.unactivate();
        }
        if (r.hoverData.which === 3) {
          var cxtEvt = {
            originalEvent: e,
            type: 'cxttapend',
            position: {
              x: pos[0],
              y: pos[1]
            }
          };
          if (down) {
            down.emit(cxtEvt);
          } else {
            cy.emit(cxtEvt);
          }
          if (!r.hoverData.cxtDragged) {
            var cxtTap = {
              originalEvent: e,
              type: 'cxttap',
              position: {
                x: pos[0],
                y: pos[1]
              }
            };
            if (down) {
              down.emit(cxtTap);
            } else {
              cy.emit(cxtTap);
            }
          }
          r.hoverData.cxtDragged = false;
          r.hoverData.which = null;
        } else if (r.hoverData.which === 1) {
          triggerEvents(near, ['mouseup', 'tapend', 'vmouseup'], e, {
            x: pos[0],
            y: pos[1]
          });
          if (!r.dragData.didDrag &&
          // didn't move a node around
          !r.hoverData.dragged &&
          // didn't pan
          !r.hoverData.selecting &&
          // not box selection
          !r.hoverData.isOverThresholdDrag // didn't move too much
          ) {
            triggerEvents(down, ["click", "tap", "vclick"], e, {
              x: pos[0],
              y: pos[1]
            });
            didDoubleClick = false;
            if (e.timeStamp - prevClickTimeStamp <= cy.multiClickDebounceTime()) {
              clickTimeout && clearTimeout(clickTimeout);
              didDoubleClick = true;
              prevClickTimeStamp = null;
              triggerEvents(down, ["dblclick", "dbltap", "vdblclick"], e, {
                x: pos[0],
                y: pos[1]
              });
            } else {
              clickTimeout = setTimeout(function () {
                if (didDoubleClick) return;
                triggerEvents(down, ["oneclick", "onetap", "voneclick"], e, {
                  x: pos[0],
                  y: pos[1]
                });
              }, cy.multiClickDebounceTime());
              prevClickTimeStamp = e.timeStamp;
            }
          }

          // Deselect all elements if nothing is currently under the mouse cursor and we aren't dragging something
          if (down == null // not mousedown on node
          && !r.dragData.didDrag // didn't move the node around
          && !r.hoverData.selecting // not box selection
          && !r.hoverData.dragged // didn't pan
          && !isMultSelKeyDown(e)) {
            cy.$(isSelected).unselect(['tapunselect']);
            if (draggedElements.length > 0) {
              r.redrawHint('eles', true);
            }
            r.dragData.possibleDragElements = draggedElements = cy.collection();
          }

          // Single selection
          if (near == down && !r.dragData.didDrag && !r.hoverData.selecting) {
            if (near != null && near._private.selectable) {
              if (r.hoverData.dragging) ; else if (cy.selectionType() === 'additive' || multSelKeyDown) {
                if (near.selected()) {
                  near.unselect(['tapunselect']);
                } else {
                  near.select(['tapselect']);
                }
              } else {
                if (!multSelKeyDown) {
                  cy.$(isSelected).unmerge(near).unselect(['tapunselect']);
                  near.select(['tapselect']);
                }
              }
              r.redrawHint('eles', true);
            }
          }
          if (r.hoverData.selecting) {
            var box = cy.collection(r.getAllInBox(select[0], select[1], select[2], select[3]));
            r.redrawHint('select', true);
            if (box.length > 0) {
              r.redrawHint('eles', true);
            }
            cy.emit({
              type: 'boxend',
              originalEvent: e,
              position: {
                x: pos[0],
                y: pos[1]
              }
            });
            var eleWouldBeSelected = function eleWouldBeSelected(ele) {
              return ele.selectable() && !ele.selected();
            };
            if (cy.selectionType() === 'additive') {
              box.emit('box').stdFilter(eleWouldBeSelected).select().emit('boxselect');
            } else {
              if (!multSelKeyDown) {
                cy.$(isSelected).unmerge(box).unselect();
              }
              box.emit('box').stdFilter(eleWouldBeSelected).select().emit('boxselect');
            }

            // always need redraw in case eles unselectable
            r.redraw();
          }

          // Cancel drag pan
          if (r.hoverData.dragging) {
            r.hoverData.dragging = false;
            r.redrawHint('select', true);
            r.redrawHint('eles', true);
            r.redraw();
          }
          if (!select[4]) {
            r.redrawHint('drag', true);
            r.redrawHint('eles', true);
            var downWasGrabbed = down && down.grabbed();
            freeDraggedElements(draggedElements);
            if (downWasGrabbed) {
              down.emit('freeon');
              draggedElements.emit('free');
              if (r.dragData.didDrag) {
                down.emit('dragfreeon');
                draggedElements.emit('dragfree');
              }
            }
          }
        } // else not right mouse

        select[4] = 0;
        r.hoverData.down = null;
        r.hoverData.cxtStarted = false;
        r.hoverData.draggingEles = false;
        r.hoverData.selecting = false;
        r.hoverData.isOverThresholdDrag = false;
        r.dragData.didDrag = false;
        r.hoverData.dragged = false;
        r.hoverData.dragDelta = [];
        r.hoverData.mdownPos = null;
        r.hoverData.mdownGPos = null;
      }, false);
      var wheelHandler = function wheelHandler(e) {
        if (r.scrollingPage) {
          return;
        } // while scrolling, ignore wheel-to-zoom

        var cy = r.cy;
        var zoom = cy.zoom();
        var pan = cy.pan();
        var pos = r.projectIntoViewport(e.clientX, e.clientY);
        var rpos = [pos[0] * zoom + pan.x, pos[1] * zoom + pan.y];
        if (r.hoverData.draggingEles || r.hoverData.dragging || r.hoverData.cxtStarted || inBoxSelection()) {
          // if pan dragging or cxt dragging, wheel movements make no zoom
          e.preventDefault();
          return;
        }
        if (cy.panningEnabled() && cy.userPanningEnabled() && cy.zoomingEnabled() && cy.userZoomingEnabled()) {
          e.preventDefault();
          r.data.wheelZooming = true;
          clearTimeout(r.data.wheelTimeout);
          r.data.wheelTimeout = setTimeout(function () {
            r.data.wheelZooming = false;
            r.redrawHint('eles', true);
            r.redraw();
          }, 150);
          var diff;
          if (e.deltaY != null) {
            diff = e.deltaY / -250;
          } else if (e.wheelDeltaY != null) {
            diff = e.wheelDeltaY / 1000;
          } else {
            diff = e.wheelDelta / 1000;
          }
          diff = diff * r.wheelSensitivity;
          var needsWheelFix = e.deltaMode === 1;
          if (needsWheelFix) {
            // fixes slow wheel events on ff/linux and ff/windows
            diff *= 33;
          }
          var newZoom = cy.zoom() * Math.pow(10, diff);
          if (e.type === 'gesturechange') {
            newZoom = r.gestureStartZoom * e.scale;
          }
          cy.zoom({
            level: newZoom,
            renderedPosition: {
              x: rpos[0],
              y: rpos[1]
            }
          });
          cy.emit(e.type === 'gesturechange' ? 'pinchzoom' : 'scrollzoom');
        }
      };

      // Functions to help with whether mouse wheel should trigger zooming
      // --
      r.registerBinding(r.container, 'wheel', wheelHandler, true);

      // disable nonstandard wheel events
      // r.registerBinding(r.container, 'mousewheel', wheelHandler, true);
      // r.registerBinding(r.container, 'DOMMouseScroll', wheelHandler, true);
      // r.registerBinding(r.container, 'MozMousePixelScroll', wheelHandler, true); // older firefox

      r.registerBinding(containerWindow, 'scroll', function scrollHandler(e) {
        // eslint-disable-line no-unused-vars
        r.scrollingPage = true;
        clearTimeout(r.scrollingPageTimeout);
        r.scrollingPageTimeout = setTimeout(function () {
          r.scrollingPage = false;
        }, 250);
      }, true);

      // desktop safari pinch to zoom start
      r.registerBinding(r.container, 'gesturestart', function gestureStartHandler(e) {
        r.gestureStartZoom = r.cy.zoom();
        if (!r.hasTouchStarted) {
          // don't affect touch devices like iphone
          e.preventDefault();
        }
      }, true);
      r.registerBinding(r.container, 'gesturechange', function (e) {
        if (!r.hasTouchStarted) {
          // don't affect touch devices like iphone
          wheelHandler(e);
        }
      }, true);

      // Functions to help with handling mouseout/mouseover on the Cytoscape container
      // Handle mouseout on Cytoscape container
      r.registerBinding(r.container, 'mouseout', function mouseOutHandler(e) {
        var pos = r.projectIntoViewport(e.clientX, e.clientY);
        r.cy.emit({
          originalEvent: e,
          type: 'mouseout',
          position: {
            x: pos[0],
            y: pos[1]
          }
        });
      }, false);
      r.registerBinding(r.container, 'mouseover', function mouseOverHandler(e) {
        var pos = r.projectIntoViewport(e.clientX, e.clientY);
        r.cy.emit({
          originalEvent: e,
          type: 'mouseover',
          position: {
            x: pos[0],
            y: pos[1]
          }
        });
      }, false);
      var f1x1, f1y1, f2x1, f2y1; // starting points for pinch-to-zoom
      var distance1, distance1Sq; // initial distance between finger 1 and finger 2 for pinch-to-zoom
      var center1, modelCenter1; // center point on start pinch to zoom
      var offsetLeft, offsetTop;
      var containerWidth, containerHeight;
      var twoFingersStartInside;
      var distance = function distance(x1, y1, x2, y2) {
        return Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));
      };
      var distanceSq = function distanceSq(x1, y1, x2, y2) {
        return (x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1);
      };
      var touchstartHandler;
      r.registerBinding(r.container, 'touchstart', touchstartHandler = function touchstartHandler(e) {
        r.hasTouchStarted = true;
        if (!eventInContainer(e)) {
          return;
        }
        blurActiveDomElement();
        r.touchData.capture = true;
        r.data.bgActivePosistion = undefined;
        var cy = r.cy;
        var now = r.touchData.now;
        var earlier = r.touchData.earlier;
        if (e.touches[0]) {
          var pos = r.projectIntoViewport(e.touches[0].clientX, e.touches[0].clientY);
          now[0] = pos[0];
          now[1] = pos[1];
        }
        if (e.touches[1]) {
          var pos = r.projectIntoViewport(e.touches[1].clientX, e.touches[1].clientY);
          now[2] = pos[0];
          now[3] = pos[1];
        }
        if (e.touches[2]) {
          var pos = r.projectIntoViewport(e.touches[2].clientX, e.touches[2].clientY);
          now[4] = pos[0];
          now[5] = pos[1];
        }

        // record starting points for pinch-to-zoom
        if (e.touches[1]) {
          r.touchData.singleTouchMoved = true;
          freeDraggedElements(r.dragData.touchDragEles);
          var offsets = r.findContainerClientCoords();
          offsetLeft = offsets[0];
          offsetTop = offsets[1];
          containerWidth = offsets[2];
          containerHeight = offsets[3];
          f1x1 = e.touches[0].clientX - offsetLeft;
          f1y1 = e.touches[0].clientY - offsetTop;
          f2x1 = e.touches[1].clientX - offsetLeft;
          f2y1 = e.touches[1].clientY - offsetTop;
          twoFingersStartInside = 0 <= f1x1 && f1x1 <= containerWidth && 0 <= f2x1 && f2x1 <= containerWidth && 0 <= f1y1 && f1y1 <= containerHeight && 0 <= f2y1 && f2y1 <= containerHeight;
          var pan = cy.pan();
          var zoom = cy.zoom();
          distance1 = distance(f1x1, f1y1, f2x1, f2y1);
          distance1Sq = distanceSq(f1x1, f1y1, f2x1, f2y1);
          center1 = [(f1x1 + f2x1) / 2, (f1y1 + f2y1) / 2];
          modelCenter1 = [(center1[0] - pan.x) / zoom, (center1[1] - pan.y) / zoom];

          // consider context tap
          var cxtDistThreshold = 200;
          var cxtDistThresholdSq = cxtDistThreshold * cxtDistThreshold;
          if (distance1Sq < cxtDistThresholdSq && !e.touches[2]) {
            var near1 = r.findNearestElement(now[0], now[1], true, true);
            var near2 = r.findNearestElement(now[2], now[3], true, true);
            if (near1 && near1.isNode()) {
              near1.activate().emit({
                originalEvent: e,
                type: 'cxttapstart',
                position: {
                  x: now[0],
                  y: now[1]
                }
              });
              r.touchData.start = near1;
            } else if (near2 && near2.isNode()) {
              near2.activate().emit({
                originalEvent: e,
                type: 'cxttapstart',
                position: {
                  x: now[0],
                  y: now[1]
                }
              });
              r.touchData.start = near2;
            } else {
              cy.emit({
                originalEvent: e,
                type: 'cxttapstart',
                position: {
                  x: now[0],
                  y: now[1]
                }
              });
            }
            if (r.touchData.start) {
              r.touchData.start._private.grabbed = false;
            }
            r.touchData.cxt = true;
            r.touchData.cxtDragged = false;
            r.data.bgActivePosistion = undefined;
            r.redraw();
            return;
          }
        }
        if (e.touches[2]) {
          // ignore

          // safari on ios pans the page otherwise (normally you should be able to preventdefault on touchmove...)
          if (cy.boxSelectionEnabled()) {
            e.preventDefault();
          }
        } else if (e.touches[1]) ; else if (e.touches[0]) {
          var nears = r.findNearestElements(now[0], now[1], true, true);
          var near = nears[0];
          if (near != null) {
            near.activate();
            r.touchData.start = near;
            r.touchData.starts = nears;
            if (r.nodeIsGrabbable(near)) {
              var draggedEles = r.dragData.touchDragEles = cy.collection();
              var selectedNodes = null;
              r.redrawHint('eles', true);
              r.redrawHint('drag', true);
              if (near.selected()) {
                // reset drag elements, since near will be added again

                selectedNodes = cy.$(function (ele) {
                  return ele.selected() && r.nodeIsGrabbable(ele);
                });
                addNodesToDrag(selectedNodes, {
                  addToList: draggedEles
                });
              } else {
                addNodeToDrag(near, {
                  addToList: draggedEles
                });
              }
              setGrabTarget(near);
              var makeEvent = function makeEvent(type) {
                return {
                  originalEvent: e,
                  type: type,
                  position: {
                    x: now[0],
                    y: now[1]
                  }
                };
              };
              near.emit(makeEvent('grabon'));
              if (selectedNodes) {
                selectedNodes.forEach(function (n) {
                  n.emit(makeEvent('grab'));
                });
              } else {
                near.emit(makeEvent('grab'));
              }
            }
          }
          triggerEvents(near, ['touchstart', 'tapstart', 'vmousedown'], e, {
            x: now[0],
            y: now[1]
          });
          if (near == null) {
            r.data.bgActivePosistion = {
              x: pos[0],
              y: pos[1]
            };
            r.redrawHint('select', true);
            r.redraw();
          }

          // Tap, taphold
          // -----

          r.touchData.singleTouchMoved = false;
          r.touchData.singleTouchStartTime = +new Date();
          clearTimeout(r.touchData.tapholdTimeout);
          r.touchData.tapholdTimeout = setTimeout(function () {
            if (r.touchData.singleTouchMoved === false && !r.pinching // if pinching, then taphold unselect shouldn't take effect
            && !r.touchData.selecting // box selection shouldn't allow taphold through
            ) {
              triggerEvents(r.touchData.start, ['taphold'], e, {
                x: now[0],
                y: now[1]
              });
            }
          }, r.tapholdDuration);
        }
        if (e.touches.length >= 1) {
          var sPos = r.touchData.startPosition = [null, null, null, null, null, null];
          for (var i = 0; i < now.length; i++) {
            sPos[i] = earlier[i] = now[i];
          }
          var touch0 = e.touches[0];
          r.touchData.startGPosition = [touch0.clientX, touch0.clientY];
        }
      }, false);
      var touchmoveHandler;
      r.registerBinding(window, 'touchmove', touchmoveHandler = function touchmoveHandler(e) {
        // eslint-disable-line no-undef
        var capture = r.touchData.capture;
        if (!capture && !eventInContainer(e)) {
          return;
        }
        var select = r.selection;
        var cy = r.cy;
        var now = r.touchData.now;
        var earlier = r.touchData.earlier;
        var zoom = cy.zoom();
        if (e.touches[0]) {
          var pos = r.projectIntoViewport(e.touches[0].clientX, e.touches[0].clientY);
          now[0] = pos[0];
          now[1] = pos[1];
        }
        if (e.touches[1]) {
          var pos = r.projectIntoViewport(e.touches[1].clientX, e.touches[1].clientY);
          now[2] = pos[0];
          now[3] = pos[1];
        }
        if (e.touches[2]) {
          var pos = r.projectIntoViewport(e.touches[2].clientX, e.touches[2].clientY);
          now[4] = pos[0];
          now[5] = pos[1];
        }
        var startGPos = r.touchData.startGPosition;
        var isOverThresholdDrag;
        if (capture && e.touches[0] && startGPos) {
          var disp = [];
          for (var j = 0; j < now.length; j++) {
            disp[j] = now[j] - earlier[j];
          }
          var dx = e.touches[0].clientX - startGPos[0];
          var dx2 = dx * dx;
          var dy = e.touches[0].clientY - startGPos[1];
          var dy2 = dy * dy;
          var dist2 = dx2 + dy2;
          isOverThresholdDrag = dist2 >= r.touchTapThreshold2;
        }

        // context swipe cancelling
        if (capture && r.touchData.cxt) {
          e.preventDefault();
          var f1x2 = e.touches[0].clientX - offsetLeft,
            f1y2 = e.touches[0].clientY - offsetTop;
          var f2x2 = e.touches[1].clientX - offsetLeft,
            f2y2 = e.touches[1].clientY - offsetTop;
          // var distance2 = distance( f1x2, f1y2, f2x2, f2y2 );
          var distance2Sq = distanceSq(f1x2, f1y2, f2x2, f2y2);
          var factorSq = distance2Sq / distance1Sq;
          var distThreshold = 150;
          var distThresholdSq = distThreshold * distThreshold;
          var factorThreshold = 1.5;
          var factorThresholdSq = factorThreshold * factorThreshold;

          // cancel ctx gestures if the distance b/t the fingers increases
          if (factorSq >= factorThresholdSq || distance2Sq >= distThresholdSq) {
            r.touchData.cxt = false;
            r.data.bgActivePosistion = undefined;
            r.redrawHint('select', true);
            var cxtEvt = {
              originalEvent: e,
              type: 'cxttapend',
              position: {
                x: now[0],
                y: now[1]
              }
            };
            if (r.touchData.start) {
              r.touchData.start.unactivate().emit(cxtEvt);
              r.touchData.start = null;
            } else {
              cy.emit(cxtEvt);
            }
          }
        }

        // context swipe
        if (capture && r.touchData.cxt) {
          var cxtEvt = {
            originalEvent: e,
            type: 'cxtdrag',
            position: {
              x: now[0],
              y: now[1]
            }
          };
          r.data.bgActivePosistion = undefined;
          r.redrawHint('select', true);
          if (r.touchData.start) {
            r.touchData.start.emit(cxtEvt);
          } else {
            cy.emit(cxtEvt);
          }
          if (r.touchData.start) {
            r.touchData.start._private.grabbed = false;
          }
          r.touchData.cxtDragged = true;
          var near = r.findNearestElement(now[0], now[1], true, true);
          if (!r.touchData.cxtOver || near !== r.touchData.cxtOver) {
            if (r.touchData.cxtOver) {
              r.touchData.cxtOver.emit({
                originalEvent: e,
                type: 'cxtdragout',
                position: {
                  x: now[0],
                  y: now[1]
                }
              });
            }
            r.touchData.cxtOver = near;
            if (near) {
              near.emit({
                originalEvent: e,
                type: 'cxtdragover',
                position: {
                  x: now[0],
                  y: now[1]
                }
              });
            }
          }

          // box selection
        } else if (capture && e.touches[2] && cy.boxSelectionEnabled()) {
          e.preventDefault();
          r.data.bgActivePosistion = undefined;
          this.lastThreeTouch = +new Date();
          if (!r.touchData.selecting) {
            cy.emit({
              originalEvent: e,
              type: 'boxstart',
              position: {
                x: now[0],
                y: now[1]
              }
            });
          }
          r.touchData.selecting = true;
          r.touchData.didSelect = true;
          select[4] = 1;
          if (!select || select.length === 0 || select[0] === undefined) {
            select[0] = (now[0] + now[2] + now[4]) / 3;
            select[1] = (now[1] + now[3] + now[5]) / 3;
            select[2] = (now[0] + now[2] + now[4]) / 3 + 1;
            select[3] = (now[1] + now[3] + now[5]) / 3 + 1;
          } else {
            select[2] = (now[0] + now[2] + now[4]) / 3;
            select[3] = (now[1] + now[3] + now[5]) / 3;
          }
          r.redrawHint('select', true);
          r.redraw();

          // pinch to zoom
        } else if (capture && e.touches[1] && !r.touchData.didSelect // don't allow box selection to degrade to pinch-to-zoom
        && cy.zoomingEnabled() && cy.panningEnabled() && cy.userZoomingEnabled() && cy.userPanningEnabled()) {
          // two fingers => pinch to zoom
          e.preventDefault();
          r.data.bgActivePosistion = undefined;
          r.redrawHint('select', true);
          var draggedEles = r.dragData.touchDragEles;
          if (draggedEles) {
            r.redrawHint('drag', true);
            for (var i = 0; i < draggedEles.length; i++) {
              var de_p = draggedEles[i]._private;
              de_p.grabbed = false;
              de_p.rscratch.inDragLayer = false;
            }
          }
          var _start = r.touchData.start;

          // (x2, y2) for fingers 1 and 2
          var f1x2 = e.touches[0].clientX - offsetLeft,
            f1y2 = e.touches[0].clientY - offsetTop;
          var f2x2 = e.touches[1].clientX - offsetLeft,
            f2y2 = e.touches[1].clientY - offsetTop;
          var distance2 = distance(f1x2, f1y2, f2x2, f2y2);
          // var distance2Sq = distanceSq( f1x2, f1y2, f2x2, f2y2 );
          // var factor = Math.sqrt( distance2Sq ) / Math.sqrt( distance1Sq );
          var factor = distance2 / distance1;
          if (twoFingersStartInside) {
            // delta finger1
            var df1x = f1x2 - f1x1;
            var df1y = f1y2 - f1y1;

            // delta finger 2
            var df2x = f2x2 - f2x1;
            var df2y = f2y2 - f2y1;

            // translation is the normalised vector of the two fingers movement
            // i.e. so pinching cancels out and moving together pans
            var tx = (df1x + df2x) / 2;
            var ty = (df1y + df2y) / 2;

            // now calculate the zoom
            var zoom1 = cy.zoom();
            var zoom2 = zoom1 * factor;
            var pan1 = cy.pan();

            // the model center point converted to the current rendered pos
            var ctrx = modelCenter1[0] * zoom1 + pan1.x;
            var ctry = modelCenter1[1] * zoom1 + pan1.y;
            var pan2 = {
              x: -zoom2 / zoom1 * (ctrx - pan1.x - tx) + ctrx,
              y: -zoom2 / zoom1 * (ctry - pan1.y - ty) + ctry
            };

            // remove dragged eles
            if (_start && _start.active()) {
              var draggedEles = r.dragData.touchDragEles;
              freeDraggedElements(draggedEles);
              r.redrawHint('drag', true);
              r.redrawHint('eles', true);
              _start.unactivate().emit('freeon');
              draggedEles.emit('free');
              if (r.dragData.didDrag) {
                _start.emit('dragfreeon');
                draggedEles.emit('dragfree');
              }
            }
            cy.viewport({
              zoom: zoom2,
              pan: pan2,
              cancelOnFailedZoom: true
            });
            cy.emit('pinchzoom');
            distance1 = distance2;
            f1x1 = f1x2;
            f1y1 = f1y2;
            f2x1 = f2x2;
            f2y1 = f2y2;
            r.pinching = true;
          }

          // Re-project
          if (e.touches[0]) {
            var pos = r.projectIntoViewport(e.touches[0].clientX, e.touches[0].clientY);
            now[0] = pos[0];
            now[1] = pos[1];
          }
          if (e.touches[1]) {
            var pos = r.projectIntoViewport(e.touches[1].clientX, e.touches[1].clientY);
            now[2] = pos[0];
            now[3] = pos[1];
          }
          if (e.touches[2]) {
            var pos = r.projectIntoViewport(e.touches[2].clientX, e.touches[2].clientY);
            now[4] = pos[0];
            now[5] = pos[1];
          }
        } else if (e.touches[0] && !r.touchData.didSelect // don't allow box selection to degrade to single finger events like panning
        ) {
          var start = r.touchData.start;
          var last = r.touchData.last;
          var near;
          if (!r.hoverData.draggingEles && !r.swipePanning) {
            near = r.findNearestElement(now[0], now[1], true, true);
          }
          if (capture && start != null) {
            e.preventDefault();
          }

          // dragging nodes
          if (capture && start != null && r.nodeIsDraggable(start)) {
            if (isOverThresholdDrag) {
              // then dragging can happen
              var draggedEles = r.dragData.touchDragEles;
              var justStartedDrag = !r.dragData.didDrag;
              if (justStartedDrag) {
                addNodesToDrag(draggedEles, {
                  inDragLayer: true
                });
              }
              r.dragData.didDrag = true;
              var totalShift = {
                x: 0,
                y: 0
              };
              if (number$1(disp[0]) && number$1(disp[1])) {
                totalShift.x += disp[0];
                totalShift.y += disp[1];
                if (justStartedDrag) {
                  r.redrawHint('eles', true);
                  var dragDelta = r.touchData.dragDelta;
                  if (dragDelta && number$1(dragDelta[0]) && number$1(dragDelta[1])) {
                    totalShift.x += dragDelta[0];
                    totalShift.y += dragDelta[1];
                  }
                }
              }
              r.hoverData.draggingEles = true;
              draggedEles.silentShift(totalShift).emit('position drag');
              r.redrawHint('drag', true);
              if (r.touchData.startPosition[0] == earlier[0] && r.touchData.startPosition[1] == earlier[1]) {
                r.redrawHint('eles', true);
              }
              r.redraw();
            } else {
              // otherwise keep track of drag delta for later
              var dragDelta = r.touchData.dragDelta = r.touchData.dragDelta || [];
              if (dragDelta.length === 0) {
                dragDelta.push(disp[0]);
                dragDelta.push(disp[1]);
              } else {
                dragDelta[0] += disp[0];
                dragDelta[1] += disp[1];
              }
            }
          }

          // touchmove
          {
            triggerEvents(start || near, ['touchmove', 'tapdrag', 'vmousemove'], e, {
              x: now[0],
              y: now[1]
            });
            if ((!start || !start.grabbed()) && near != last) {
              if (last) {
                last.emit({
                  originalEvent: e,
                  type: 'tapdragout',
                  position: {
                    x: now[0],
                    y: now[1]
                  }
                });
              }
              if (near) {
                near.emit({
                  originalEvent: e,
                  type: 'tapdragover',
                  position: {
                    x: now[0],
                    y: now[1]
                  }
                });
              }
            }
            r.touchData.last = near;
          }

          // check to cancel taphold
          if (capture) {
            for (var i = 0; i < now.length; i++) {
              if (now[i] && r.touchData.startPosition[i] && isOverThresholdDrag) {
                r.touchData.singleTouchMoved = true;
              }
            }
          }

          // panning
          if (capture && (start == null || start.pannable()) && cy.panningEnabled() && cy.userPanningEnabled()) {
            var allowPassthrough = allowPanningPassthrough(start, r.touchData.starts);
            if (allowPassthrough) {
              e.preventDefault();
              if (!r.data.bgActivePosistion) {
                r.data.bgActivePosistion = array2point(r.touchData.startPosition);
              }
              if (r.swipePanning) {
                cy.panBy({
                  x: disp[0] * zoom,
                  y: disp[1] * zoom
                });
                cy.emit('dragpan');
              } else if (isOverThresholdDrag) {
                r.swipePanning = true;
                cy.panBy({
                  x: dx * zoom,
                  y: dy * zoom
                });
                cy.emit('dragpan');
                if (start) {
                  start.unactivate();
                  r.redrawHint('select', true);
                  r.touchData.start = null;
                }
              }
            }

            // Re-project
            var pos = r.projectIntoViewport(e.touches[0].clientX, e.touches[0].clientY);
            now[0] = pos[0];
            now[1] = pos[1];
          }
        }
        for (var j = 0; j < now.length; j++) {
          earlier[j] = now[j];
        }

        // the active bg indicator should be removed when making a swipe that is neither for dragging nodes or panning
        if (capture && e.touches.length > 0 && !r.hoverData.draggingEles && !r.swipePanning && r.data.bgActivePosistion != null) {
          r.data.bgActivePosistion = undefined;
          r.redrawHint('select', true);
          r.redraw();
        }
      }, false);
      var touchcancelHandler;
      r.registerBinding(containerWindow, 'touchcancel', touchcancelHandler = function touchcancelHandler(e) {
        // eslint-disable-line no-unused-vars
        var start = r.touchData.start;
        r.touchData.capture = false;
        if (start) {
          start.unactivate();
        }
      });
      var touchendHandler, didDoubleTouch, touchTimeout, prevTouchTimeStamp;
      r.registerBinding(containerWindow, 'touchend', touchendHandler = function touchendHandler(e) {
        // eslint-disable-line no-unused-vars
        var start = r.touchData.start;
        var capture = r.touchData.capture;
        if (capture) {
          if (e.touches.length === 0) {
            r.touchData.capture = false;
          }
          e.preventDefault();
        } else {
          return;
        }
        var select = r.selection;
        r.swipePanning = false;
        r.hoverData.draggingEles = false;
        var cy = r.cy;
        var zoom = cy.zoom();
        var now = r.touchData.now;
        var earlier = r.touchData.earlier;
        if (e.touches[0]) {
          var pos = r.projectIntoViewport(e.touches[0].clientX, e.touches[0].clientY);
          now[0] = pos[0];
          now[1] = pos[1];
        }
        if (e.touches[1]) {
          var pos = r.projectIntoViewport(e.touches[1].clientX, e.touches[1].clientY);
          now[2] = pos[0];
          now[3] = pos[1];
        }
        if (e.touches[2]) {
          var pos = r.projectIntoViewport(e.touches[2].clientX, e.touches[2].clientY);
          now[4] = pos[0];
          now[5] = pos[1];
        }
        if (start) {
          start.unactivate();
        }
        var ctxTapend;
        if (r.touchData.cxt) {
          ctxTapend = {
            originalEvent: e,
            type: 'cxttapend',
            position: {
              x: now[0],
              y: now[1]
            }
          };
          if (start) {
            start.emit(ctxTapend);
          } else {
            cy.emit(ctxTapend);
          }
          if (!r.touchData.cxtDragged) {
            var ctxTap = {
              originalEvent: e,
              type: 'cxttap',
              position: {
                x: now[0],
                y: now[1]
              }
            };
            if (start) {
              start.emit(ctxTap);
            } else {
              cy.emit(ctxTap);
            }
          }
          if (r.touchData.start) {
            r.touchData.start._private.grabbed = false;
          }
          r.touchData.cxt = false;
          r.touchData.start = null;
          r.redraw();
          return;
        }

        // no more box selection if we don't have three fingers
        if (!e.touches[2] && cy.boxSelectionEnabled() && r.touchData.selecting) {
          r.touchData.selecting = false;
          var box = cy.collection(r.getAllInBox(select[0], select[1], select[2], select[3]));
          select[0] = undefined;
          select[1] = undefined;
          select[2] = undefined;
          select[3] = undefined;
          select[4] = 0;
          r.redrawHint('select', true);
          cy.emit({
            type: 'boxend',
            originalEvent: e,
            position: {
              x: now[0],
              y: now[1]
            }
          });
          var eleWouldBeSelected = function eleWouldBeSelected(ele) {
            return ele.selectable() && !ele.selected();
          };
          box.emit('box').stdFilter(eleWouldBeSelected).select().emit('boxselect');
          if (box.nonempty()) {
            r.redrawHint('eles', true);
          }
          r.redraw();
        }
        if (start != null) {
          start.unactivate();
        }
        if (e.touches[2]) {
          r.data.bgActivePosistion = undefined;
          r.redrawHint('select', true);
        } else if (e.touches[1]) ; else if (e.touches[0]) ; else if (!e.touches[0]) {
          r.data.bgActivePosistion = undefined;
          r.redrawHint('select', true);
          var draggedEles = r.dragData.touchDragEles;
          if (start != null) {
            var startWasGrabbed = start._private.grabbed;
            freeDraggedElements(draggedEles);
            r.redrawHint('drag', true);
            r.redrawHint('eles', true);
            if (startWasGrabbed) {
              start.emit('freeon');
              draggedEles.emit('free');
              if (r.dragData.didDrag) {
                start.emit('dragfreeon');
                draggedEles.emit('dragfree');
              }
            }
            triggerEvents(start, ['touchend', 'tapend', 'vmouseup', 'tapdragout'], e, {
              x: now[0],
              y: now[1]
            });
            start.unactivate();
            r.touchData.start = null;
          } else {
            var near = r.findNearestElement(now[0], now[1], true, true);
            triggerEvents(near, ['touchend', 'tapend', 'vmouseup', 'tapdragout'], e, {
              x: now[0],
              y: now[1]
            });
          }
          var dx = r.touchData.startPosition[0] - now[0];
          var dx2 = dx * dx;
          var dy = r.touchData.startPosition[1] - now[1];
          var dy2 = dy * dy;
          var dist2 = dx2 + dy2;
          var rdist2 = dist2 * zoom * zoom;

          // Tap event, roughly same as mouse click event for touch
          if (!r.touchData.singleTouchMoved) {
            if (!start) {
              cy.$(':selected').unselect(['tapunselect']);
            }
            triggerEvents(start, ['tap', 'vclick'], e, {
              x: now[0],
              y: now[1]
            });
            didDoubleTouch = false;
            if (e.timeStamp - prevTouchTimeStamp <= cy.multiClickDebounceTime()) {
              touchTimeout && clearTimeout(touchTimeout);
              didDoubleTouch = true;
              prevTouchTimeStamp = null;
              triggerEvents(start, ['dbltap', 'vdblclick'], e, {
                x: now[0],
                y: now[1]
              });
            } else {
              touchTimeout = setTimeout(function () {
                if (didDoubleTouch) return;
                triggerEvents(start, ['onetap', 'voneclick'], e, {
                  x: now[0],
                  y: now[1]
                });
              }, cy.multiClickDebounceTime());
              prevTouchTimeStamp = e.timeStamp;
            }
          }

          // Prepare to select the currently touched node, only if it hasn't been dragged past a certain distance
          if (start != null && !r.dragData.didDrag // didn't drag nodes around
          && start._private.selectable && rdist2 < r.touchTapThreshold2 && !r.pinching // pinch to zoom should not affect selection
          ) {
            if (cy.selectionType() === 'single') {
              cy.$(isSelected).unmerge(start).unselect(['tapunselect']);
              start.select(['tapselect']);
            } else {
              if (start.selected()) {
                start.unselect(['tapunselect']);
              } else {
                start.select(['tapselect']);
              }
            }
            r.redrawHint('eles', true);
          }
          r.touchData.singleTouchMoved = true;
        }
        for (var j = 0; j < now.length; j++) {
          earlier[j] = now[j];
        }
        r.dragData.didDrag = false; // reset for next touchstart

        if (e.touches.length === 0) {
          r.touchData.dragDelta = [];
          r.touchData.startPosition = [null, null, null, null, null, null];
          r.touchData.startGPosition = null;
          r.touchData.didSelect = false;
        }
        if (e.touches.length < 2) {
          if (e.touches.length === 1) {
            // the old start global pos'n may not be the same finger that remains
            r.touchData.startGPosition = [e.touches[0].clientX, e.touches[0].clientY];
          }
          r.pinching = false;
          r.redrawHint('eles', true);
          r.redraw();
        }

        //r.redraw();
      }, false);

      // fallback compatibility layer for ms pointer events
      if (typeof TouchEvent === 'undefined') {
        var pointers = [];
        var makeTouch = function makeTouch(e) {
          return {
            clientX: e.clientX,
            clientY: e.clientY,
            force: 1,
            identifier: e.pointerId,
            pageX: e.pageX,
            pageY: e.pageY,
            radiusX: e.width / 2,
            radiusY: e.height / 2,
            screenX: e.screenX,
            screenY: e.screenY,
            target: e.target
          };
        };
        var makePointer = function makePointer(e) {
          return {
            event: e,
            touch: makeTouch(e)
          };
        };
        var addPointer = function addPointer(e) {
          pointers.push(makePointer(e));
        };
        var removePointer = function removePointer(e) {
          for (var i = 0; i < pointers.length; i++) {
            var p = pointers[i];
            if (p.event.pointerId === e.pointerId) {
              pointers.splice(i, 1);
              return;
            }
          }
        };
        var updatePointer = function updatePointer(e) {
          var p = pointers.filter(function (p) {
            return p.event.pointerId === e.pointerId;
          })[0];
          p.event = e;
          p.touch = makeTouch(e);
        };
        var addTouchesToEvent = function addTouchesToEvent(e) {
          e.touches = pointers.map(function (p) {
            return p.touch;
          });
        };
        var pointerIsMouse = function pointerIsMouse(e) {
          return e.pointerType === 'mouse' || e.pointerType === 4;
        };
        r.registerBinding(r.container, 'pointerdown', function (e) {
          if (pointerIsMouse(e)) {
            return;
          } // mouse already handled

          e.preventDefault();
          addPointer(e);
          addTouchesToEvent(e);
          touchstartHandler(e);
        });
        r.registerBinding(r.container, 'pointerup', function (e) {
          if (pointerIsMouse(e)) {
            return;
          } // mouse already handled

          removePointer(e);
          addTouchesToEvent(e);
          touchendHandler(e);
        });
        r.registerBinding(r.container, 'pointercancel', function (e) {
          if (pointerIsMouse(e)) {
            return;
          } // mouse already handled

          removePointer(e);
          addTouchesToEvent(e);
          touchcancelHandler(e);
        });
        r.registerBinding(r.container, 'pointermove', function (e) {
          if (pointerIsMouse(e)) {
            return;
          } // mouse already handled

          e.preventDefault();
          updatePointer(e);
          addTouchesToEvent(e);
          touchmoveHandler(e);
        });
      }
    };

    var BRp$2 = {};
    BRp$2.generatePolygon = function (name, points) {
      return this.nodeShapes[name] = {
        renderer: this,
        name: name,
        points: points,
        draw: function draw(context, centerX, centerY, width, height, cornerRadius) {
          this.renderer.nodeShapeImpl('polygon', context, centerX, centerY, width, height, this.points);
        },
        intersectLine: function intersectLine(nodeX, nodeY, width, height, x, y, padding, cornerRadius) {
          return polygonIntersectLine(x, y, this.points, nodeX, nodeY, width / 2, height / 2, padding);
        },
        checkPoint: function checkPoint(x, y, padding, width, height, centerX, centerY, cornerRadius) {
          return pointInsidePolygon(x, y, this.points, centerX, centerY, width, height, [0, -1], padding);
        }
      };
    };
    BRp$2.generateEllipse = function () {
      return this.nodeShapes['ellipse'] = {
        renderer: this,
        name: 'ellipse',
        draw: function draw(context, centerX, centerY, width, height, cornerRadius) {
          this.renderer.nodeShapeImpl(this.name, context, centerX, centerY, width, height);
        },
        intersectLine: function intersectLine(nodeX, nodeY, width, height, x, y, padding, cornerRadius) {
          return intersectLineEllipse(x, y, nodeX, nodeY, width / 2 + padding, height / 2 + padding);
        },
        checkPoint: function checkPoint(x, y, padding, width, height, centerX, centerY, cornerRadius) {
          return checkInEllipse(x, y, width, height, centerX, centerY, padding);
        }
      };
    };
    BRp$2.generateRoundPolygon = function (name, points) {
      return this.nodeShapes[name] = {
        renderer: this,
        name: name,
        points: points,
        getOrCreateCorners: function getOrCreateCorners(centerX, centerY, width, height, cornerRadius, rs, field) {
          if (rs[field] !== undefined && rs[field + '-cx'] === centerX && rs[field + '-cy'] === centerY) {
            return rs[field];
          }
          rs[field] = new Array(points.length / 2);
          rs[field + '-cx'] = centerX;
          rs[field + '-cy'] = centerY;
          var halfW = width / 2;
          var halfH = height / 2;
          cornerRadius = cornerRadius === 'auto' ? getRoundPolygonRadius(width, height) : cornerRadius;
          var p = new Array(points.length / 2);
          for (var _i = 0; _i < points.length / 2; _i++) {
            p[_i] = {
              x: centerX + halfW * points[_i * 2],
              y: centerY + halfH * points[_i * 2 + 1]
            };
          }
          var i,
            p1,
            p2,
            p3,
            len = p.length;
          p1 = p[len - 1];
          // for each point
          for (i = 0; i < len; i++) {
            p2 = p[i % len];
            p3 = p[(i + 1) % len];
            rs[field][i] = getRoundCorner(p1, p2, p3, cornerRadius);
            p1 = p2;
            p2 = p3;
          }
          return rs[field];
        },
        draw: function draw(context, centerX, centerY, width, height, cornerRadius, rs) {
          this.renderer.nodeShapeImpl('round-polygon', context, centerX, centerY, width, height, this.points, this.getOrCreateCorners(centerX, centerY, width, height, cornerRadius, rs, 'drawCorners'));
        },
        intersectLine: function intersectLine(nodeX, nodeY, width, height, x, y, padding, cornerRadius, rs) {
          return roundPolygonIntersectLine(x, y, this.points, nodeX, nodeY, width, height, padding, this.getOrCreateCorners(nodeX, nodeY, width, height, cornerRadius, rs, 'corners'));
        },
        checkPoint: function checkPoint(x, y, padding, width, height, centerX, centerY, cornerRadius, rs) {
          return pointInsideRoundPolygon(x, y, this.points, centerX, centerY, width, height, this.getOrCreateCorners(centerX, centerY, width, height, cornerRadius, rs, 'corners'));
        }
      };
    };
    BRp$2.generateRoundRectangle = function () {
      return this.nodeShapes['round-rectangle'] = this.nodeShapes['roundrectangle'] = {
        renderer: this,
        name: 'round-rectangle',
        points: generateUnitNgonPointsFitToSquare(4, 0),
        draw: function draw(context, centerX, centerY, width, height, cornerRadius) {
          this.renderer.nodeShapeImpl(this.name, context, centerX, centerY, width, height, this.points, cornerRadius);
        },
        intersectLine: function intersectLine(nodeX, nodeY, width, height, x, y, padding, cornerRadius) {
          return roundRectangleIntersectLine(x, y, nodeX, nodeY, width, height, padding, cornerRadius);
        },
        checkPoint: function checkPoint(x, y, padding, width, height, centerX, centerY, cornerRadius) {
          var halfWidth = width / 2;
          var halfHeight = height / 2;
          cornerRadius = cornerRadius === 'auto' ? getRoundRectangleRadius(width, height) : cornerRadius;
          cornerRadius = Math.min(halfWidth, halfHeight, cornerRadius);
          var diam = cornerRadius * 2;

          // Check hBox
          if (pointInsidePolygon(x, y, this.points, centerX, centerY, width, height - diam, [0, -1], padding)) {
            return true;
          }

          // Check vBox
          if (pointInsidePolygon(x, y, this.points, centerX, centerY, width - diam, height, [0, -1], padding)) {
            return true;
          }

          // Check top left quarter circle
          if (checkInEllipse(x, y, diam, diam, centerX - halfWidth + cornerRadius, centerY - halfHeight + cornerRadius, padding)) {
            return true;
          }

          // Check top right quarter circle
          if (checkInEllipse(x, y, diam, diam, centerX + halfWidth - cornerRadius, centerY - halfHeight + cornerRadius, padding)) {
            return true;
          }

          // Check bottom right quarter circle
          if (checkInEllipse(x, y, diam, diam, centerX + halfWidth - cornerRadius, centerY + halfHeight - cornerRadius, padding)) {
            return true;
          }

          // Check bottom left quarter circle
          if (checkInEllipse(x, y, diam, diam, centerX - halfWidth + cornerRadius, centerY + halfHeight - cornerRadius, padding)) {
            return true;
          }
          return false;
        }
      };
    };
    BRp$2.generateCutRectangle = function () {
      return this.nodeShapes['cut-rectangle'] = this.nodeShapes['cutrectangle'] = {
        renderer: this,
        name: 'cut-rectangle',
        cornerLength: getCutRectangleCornerLength(),
        points: generateUnitNgonPointsFitToSquare(4, 0),
        draw: function draw(context, centerX, centerY, width, height, cornerRadius) {
          this.renderer.nodeShapeImpl(this.name, context, centerX, centerY, width, height, null, cornerRadius);
        },
        generateCutTrianglePts: function generateCutTrianglePts(width, height, centerX, centerY, cornerRadius) {
          var cl = cornerRadius === 'auto' ? this.cornerLength : cornerRadius;
          var hh = height / 2;
          var hw = width / 2;
          var xBegin = centerX - hw;
          var xEnd = centerX + hw;
          var yBegin = centerY - hh;
          var yEnd = centerY + hh;

          // points are in clockwise order, inner (imaginary) triangle pt on [4, 5]
          return {
            topLeft: [xBegin, yBegin + cl, xBegin + cl, yBegin, xBegin + cl, yBegin + cl],
            topRight: [xEnd - cl, yBegin, xEnd, yBegin + cl, xEnd - cl, yBegin + cl],
            bottomRight: [xEnd, yEnd - cl, xEnd - cl, yEnd, xEnd - cl, yEnd - cl],
            bottomLeft: [xBegin + cl, yEnd, xBegin, yEnd - cl, xBegin + cl, yEnd - cl]
          };
        },
        intersectLine: function intersectLine(nodeX, nodeY, width, height, x, y, padding, cornerRadius) {
          var cPts = this.generateCutTrianglePts(width + 2 * padding, height + 2 * padding, nodeX, nodeY, cornerRadius);
          var pts = [].concat.apply([], [cPts.topLeft.splice(0, 4), cPts.topRight.splice(0, 4), cPts.bottomRight.splice(0, 4), cPts.bottomLeft.splice(0, 4)]);
          return polygonIntersectLine(x, y, pts, nodeX, nodeY);
        },
        checkPoint: function checkPoint(x, y, padding, width, height, centerX, centerY, cornerRadius) {
          var cl = cornerRadius === 'auto' ? this.cornerLength : cornerRadius;
          // Check hBox
          if (pointInsidePolygon(x, y, this.points, centerX, centerY, width, height - 2 * cl, [0, -1], padding)) {
            return true;
          }

          // Check vBox
          if (pointInsidePolygon(x, y, this.points, centerX, centerY, width - 2 * cl, height, [0, -1], padding)) {
            return true;
          }
          var cutTrianglePts = this.generateCutTrianglePts(width, height, centerX, centerY);
          return pointInsidePolygonPoints(x, y, cutTrianglePts.topLeft) || pointInsidePolygonPoints(x, y, cutTrianglePts.topRight) || pointInsidePolygonPoints(x, y, cutTrianglePts.bottomRight) || pointInsidePolygonPoints(x, y, cutTrianglePts.bottomLeft);
        }
      };
    };
    BRp$2.generateBarrel = function () {
      return this.nodeShapes['barrel'] = {
        renderer: this,
        name: 'barrel',
        points: generateUnitNgonPointsFitToSquare(4, 0),
        draw: function draw(context, centerX, centerY, width, height, cornerRadius) {
          this.renderer.nodeShapeImpl(this.name, context, centerX, centerY, width, height);
        },
        intersectLine: function intersectLine(nodeX, nodeY, width, height, x, y, padding, cornerRadius) {
          // use two fixed t values for the bezier curve approximation

          var t0 = 0.15;
          var t1 = 0.5;
          var t2 = 0.85;
          var bPts = this.generateBarrelBezierPts(width + 2 * padding, height + 2 * padding, nodeX, nodeY);
          var approximateBarrelCurvePts = function approximateBarrelCurvePts(pts) {
            // approximate curve pts based on the two t values
            var m0 = qbezierPtAt({
              x: pts[0],
              y: pts[1]
            }, {
              x: pts[2],
              y: pts[3]
            }, {
              x: pts[4],
              y: pts[5]
            }, t0);
            var m1 = qbezierPtAt({
              x: pts[0],
              y: pts[1]
            }, {
              x: pts[2],
              y: pts[3]
            }, {
              x: pts[4],
              y: pts[5]
            }, t1);
            var m2 = qbezierPtAt({
              x: pts[0],
              y: pts[1]
            }, {
              x: pts[2],
              y: pts[3]
            }, {
              x: pts[4],
              y: pts[5]
            }, t2);
            return [pts[0], pts[1], m0.x, m0.y, m1.x, m1.y, m2.x, m2.y, pts[4], pts[5]];
          };
          var pts = [].concat(approximateBarrelCurvePts(bPts.topLeft), approximateBarrelCurvePts(bPts.topRight), approximateBarrelCurvePts(bPts.bottomRight), approximateBarrelCurvePts(bPts.bottomLeft));
          return polygonIntersectLine(x, y, pts, nodeX, nodeY);
        },
        generateBarrelBezierPts: function generateBarrelBezierPts(width, height, centerX, centerY) {
          var hh = height / 2;
          var hw = width / 2;
          var xBegin = centerX - hw;
          var xEnd = centerX + hw;
          var yBegin = centerY - hh;
          var yEnd = centerY + hh;
          var curveConstants = getBarrelCurveConstants(width, height);
          var hOffset = curveConstants.heightOffset;
          var wOffset = curveConstants.widthOffset;
          var ctrlPtXOffset = curveConstants.ctrlPtOffsetPct * width;

          // points are in clockwise order, inner (imaginary) control pt on [4, 5]
          var pts = {
            topLeft: [xBegin, yBegin + hOffset, xBegin + ctrlPtXOffset, yBegin, xBegin + wOffset, yBegin],
            topRight: [xEnd - wOffset, yBegin, xEnd - ctrlPtXOffset, yBegin, xEnd, yBegin + hOffset],
            bottomRight: [xEnd, yEnd - hOffset, xEnd - ctrlPtXOffset, yEnd, xEnd - wOffset, yEnd],
            bottomLeft: [xBegin + wOffset, yEnd, xBegin + ctrlPtXOffset, yEnd, xBegin, yEnd - hOffset]
          };
          pts.topLeft.isTop = true;
          pts.topRight.isTop = true;
          pts.bottomLeft.isBottom = true;
          pts.bottomRight.isBottom = true;
          return pts;
        },
        checkPoint: function checkPoint(x, y, padding, width, height, centerX, centerY, cornerRadius) {
          var curveConstants = getBarrelCurveConstants(width, height);
          var hOffset = curveConstants.heightOffset;
          var wOffset = curveConstants.widthOffset;

          // Check hBox
          if (pointInsidePolygon(x, y, this.points, centerX, centerY, width, height - 2 * hOffset, [0, -1], padding)) {
            return true;
          }

          // Check vBox
          if (pointInsidePolygon(x, y, this.points, centerX, centerY, width - 2 * wOffset, height, [0, -1], padding)) {
            return true;
          }
          var barrelCurvePts = this.generateBarrelBezierPts(width, height, centerX, centerY);
          var getCurveT = function getCurveT(x, y, curvePts) {
            var x0 = curvePts[4];
            var x1 = curvePts[2];
            var x2 = curvePts[0];
            var y0 = curvePts[5];
            // var y1 = curvePts[ 3 ];
            var y2 = curvePts[1];
            var xMin = Math.min(x0, x2);
            var xMax = Math.max(x0, x2);
            var yMin = Math.min(y0, y2);
            var yMax = Math.max(y0, y2);
            if (xMin <= x && x <= xMax && yMin <= y && y <= yMax) {
              var coeff = bezierPtsToQuadCoeff(x0, x1, x2);
              var roots = solveQuadratic(coeff[0], coeff[1], coeff[2], x);
              var validRoots = roots.filter(function (r) {
                return 0 <= r && r <= 1;
              });
              if (validRoots.length > 0) {
                return validRoots[0];
              }
            }
            return null;
          };
          var curveRegions = Object.keys(barrelCurvePts);
          for (var i = 0; i < curveRegions.length; i++) {
            var corner = curveRegions[i];
            var cornerPts = barrelCurvePts[corner];
            var t = getCurveT(x, y, cornerPts);
            if (t == null) {
              continue;
            }
            var y0 = cornerPts[5];
            var y1 = cornerPts[3];
            var y2 = cornerPts[1];
            var bezY = qbezierAt(y0, y1, y2, t);
            if (cornerPts.isTop && bezY <= y) {
              return true;
            }
            if (cornerPts.isBottom && y <= bezY) {
              return true;
            }
          }
          return false;
        }
      };
    };
    BRp$2.generateBottomRoundrectangle = function () {
      return this.nodeShapes['bottom-round-rectangle'] = this.nodeShapes['bottomroundrectangle'] = {
        renderer: this,
        name: 'bottom-round-rectangle',
        points: generateUnitNgonPointsFitToSquare(4, 0),
        draw: function draw(context, centerX, centerY, width, height, cornerRadius) {
          this.renderer.nodeShapeImpl(this.name, context, centerX, centerY, width, height, this.points, cornerRadius);
        },
        intersectLine: function intersectLine(nodeX, nodeY, width, height, x, y, padding, cornerRadius) {
          var topStartX = nodeX - (width / 2 + padding);
          var topStartY = nodeY - (height / 2 + padding);
          var topEndY = topStartY;
          var topEndX = nodeX + (width / 2 + padding);
          var topIntersections = finiteLinesIntersect(x, y, nodeX, nodeY, topStartX, topStartY, topEndX, topEndY, false);
          if (topIntersections.length > 0) {
            return topIntersections;
          }
          return roundRectangleIntersectLine(x, y, nodeX, nodeY, width, height, padding, cornerRadius);
        },
        checkPoint: function checkPoint(x, y, padding, width, height, centerX, centerY, cornerRadius) {
          cornerRadius = cornerRadius === 'auto' ? getRoundRectangleRadius(width, height) : cornerRadius;
          var diam = 2 * cornerRadius;

          // Check hBox
          if (pointInsidePolygon(x, y, this.points, centerX, centerY, width, height - diam, [0, -1], padding)) {
            return true;
          }

          // Check vBox
          if (pointInsidePolygon(x, y, this.points, centerX, centerY, width - diam, height, [0, -1], padding)) {
            return true;
          }

          // check non-rounded top side
          var outerWidth = width / 2 + 2 * padding;
          var outerHeight = height / 2 + 2 * padding;
          var points = [centerX - outerWidth, centerY - outerHeight, centerX - outerWidth, centerY, centerX + outerWidth, centerY, centerX + outerWidth, centerY - outerHeight];
          if (pointInsidePolygonPoints(x, y, points)) {
            return true;
          }

          // Check bottom right quarter circle
          if (checkInEllipse(x, y, diam, diam, centerX + width / 2 - cornerRadius, centerY + height / 2 - cornerRadius, padding)) {
            return true;
          }

          // Check bottom left quarter circle
          if (checkInEllipse(x, y, diam, diam, centerX - width / 2 + cornerRadius, centerY + height / 2 - cornerRadius, padding)) {
            return true;
          }
          return false;
        }
      };
    };
    BRp$2.registerNodeShapes = function () {
      var nodeShapes = this.nodeShapes = {};
      var renderer = this;
      this.generateEllipse();
      this.generatePolygon('triangle', generateUnitNgonPointsFitToSquare(3, 0));
      this.generateRoundPolygon('round-triangle', generateUnitNgonPointsFitToSquare(3, 0));
      this.generatePolygon('rectangle', generateUnitNgonPointsFitToSquare(4, 0));
      nodeShapes['square'] = nodeShapes['rectangle'];
      this.generateRoundRectangle();
      this.generateCutRectangle();
      this.generateBarrel();
      this.generateBottomRoundrectangle();
      {
        var diamondPoints = [0, 1, 1, 0, 0, -1, -1, 0];
        this.generatePolygon('diamond', diamondPoints);
        this.generateRoundPolygon('round-diamond', diamondPoints);
      }
      this.generatePolygon('pentagon', generateUnitNgonPointsFitToSquare(5, 0));
      this.generateRoundPolygon('round-pentagon', generateUnitNgonPointsFitToSquare(5, 0));
      this.generatePolygon('hexagon', generateUnitNgonPointsFitToSquare(6, 0));
      this.generateRoundPolygon('round-hexagon', generateUnitNgonPointsFitToSquare(6, 0));
      this.generatePolygon('heptagon', generateUnitNgonPointsFitToSquare(7, 0));
      this.generateRoundPolygon('round-heptagon', generateUnitNgonPointsFitToSquare(7, 0));
      this.generatePolygon('octagon', generateUnitNgonPointsFitToSquare(8, 0));
      this.generateRoundPolygon('round-octagon', generateUnitNgonPointsFitToSquare(8, 0));
      var star5Points = new Array(20);
      {
        var outerPoints = generateUnitNgonPoints(5, 0);
        var innerPoints = generateUnitNgonPoints(5, Math.PI / 5);

        // Outer radius is 1; inner radius of star is smaller
        var innerRadius = 0.5 * (3 - Math.sqrt(5));
        innerRadius *= 1.57;
        for (var i = 0; i < innerPoints.length / 2; i++) {
          innerPoints[i * 2] *= innerRadius;
          innerPoints[i * 2 + 1] *= innerRadius;
        }
        for (var i = 0; i < 20 / 4; i++) {
          star5Points[i * 4] = outerPoints[i * 2];
          star5Points[i * 4 + 1] = outerPoints[i * 2 + 1];
          star5Points[i * 4 + 2] = innerPoints[i * 2];
          star5Points[i * 4 + 3] = innerPoints[i * 2 + 1];
        }
      }
      star5Points = fitPolygonToSquare(star5Points);
      this.generatePolygon('star', star5Points);
      this.generatePolygon('vee', [-1, -1, 0, -0.333, 1, -1, 0, 1]);
      this.generatePolygon('rhomboid', [-1, -1, 0.333, -1, 1, 1, -0.333, 1]);
      this.generatePolygon('right-rhomboid', [-0.333, -1, 1, -1, 0.333, 1, -1, 1]);
      this.nodeShapes['concavehexagon'] = this.generatePolygon('concave-hexagon', [-1, -0.95, -0.75, 0, -1, 0.95, 1, 0.95, 0.75, 0, 1, -0.95]);
      {
        var tagPoints = [-1, -1, 0.25, -1, 1, 0, 0.25, 1, -1, 1];
        this.generatePolygon('tag', tagPoints);
        this.generateRoundPolygon('round-tag', tagPoints);
      }
      nodeShapes.makePolygon = function (points) {
        // use caching on user-specified polygons so they are as fast as native shapes

        var key = points.join('$');
        var name = 'polygon-' + key;
        var shape;
        if (shape = this[name]) {
          // got cached shape
          return shape;
        }

        // create and cache new shape
        return renderer.generatePolygon(name, points);
      };
    };

    var BRp$1 = {};
    BRp$1.timeToRender = function () {
      return this.redrawTotalTime / this.redrawCount;
    };
    BRp$1.redraw = function (options) {
      options = options || staticEmptyObject();
      var r = this;
      if (r.averageRedrawTime === undefined) {
        r.averageRedrawTime = 0;
      }
      if (r.lastRedrawTime === undefined) {
        r.lastRedrawTime = 0;
      }
      if (r.lastDrawTime === undefined) {
        r.lastDrawTime = 0;
      }
      r.requestedFrame = true;
      r.renderOptions = options;
    };
    BRp$1.beforeRender = function (fn, priority) {
      // the renderer can't add tick callbacks when destroyed
      if (this.destroyed) {
        return;
      }
      if (priority == null) {
        error('Priority is not optional for beforeRender');
      }
      var cbs = this.beforeRenderCallbacks;
      cbs.push({
        fn: fn,
        priority: priority
      });

      // higher priority callbacks executed first
      cbs.sort(function (a, b) {
        return b.priority - a.priority;
      });
    };
    var beforeRenderCallbacks = function beforeRenderCallbacks(r, willDraw, startTime) {
      var cbs = r.beforeRenderCallbacks;
      for (var i = 0; i < cbs.length; i++) {
        cbs[i].fn(willDraw, startTime);
      }
    };
    BRp$1.startRenderLoop = function () {
      var r = this;
      var cy = r.cy;
      if (r.renderLoopStarted) {
        return;
      } else {
        r.renderLoopStarted = true;
      }
      var renderFn = function renderFn(requestTime) {
        if (r.destroyed) {
          return;
        }
        if (cy.batching()) ; else if (r.requestedFrame && !r.skipFrame) {
          beforeRenderCallbacks(r, true, requestTime);
          var startTime = performanceNow();
          r.render(r.renderOptions);
          var endTime = r.lastDrawTime = performanceNow();
          if (r.averageRedrawTime === undefined) {
            r.averageRedrawTime = endTime - startTime;
          }
          if (r.redrawCount === undefined) {
            r.redrawCount = 0;
          }
          r.redrawCount++;
          if (r.redrawTotalTime === undefined) {
            r.redrawTotalTime = 0;
          }
          var duration = endTime - startTime;
          r.redrawTotalTime += duration;
          r.lastRedrawTime = duration;

          // use a weighted average with a bias from the previous average so we don't spike so easily
          r.averageRedrawTime = r.averageRedrawTime / 2 + duration / 2;
          r.requestedFrame = false;
        } else {
          beforeRenderCallbacks(r, false, requestTime);
        }
        r.skipFrame = false;
        requestAnimationFrame$1(renderFn);
      };
      requestAnimationFrame$1(renderFn);
    };

    var BaseRenderer = function BaseRenderer(options) {
      this.init(options);
    };
    var BR = BaseRenderer;
    var BRp = BR.prototype;
    BRp.clientFunctions = ['redrawHint', 'render', 'renderTo', 'matchCanvasSize', 'nodeShapeImpl', 'arrowShapeImpl'];
    BRp.init = function (options) {
      var r = this;
      r.options = options;
      r.cy = options.cy;
      var ctr = r.container = options.cy.container();
      var containerWindow = r.cy.window();

      // prepend a stylesheet in the head such that
      if (containerWindow) {
        var document = containerWindow.document;
        var head = document.head;
        var stylesheetId = '__________cytoscape_stylesheet';
        var className = '__________cytoscape_container';
        var stylesheetAlreadyExists = document.getElementById(stylesheetId) != null;
        if (ctr.className.indexOf(className) < 0) {
          ctr.className = (ctr.className || '') + ' ' + className;
        }
        if (!stylesheetAlreadyExists) {
          var stylesheet = document.createElement('style');
          stylesheet.id = stylesheetId;
          stylesheet.textContent = '.' + className + ' { position: relative; }';
          head.insertBefore(stylesheet, head.children[0]); // first so lowest priority
        }

        var computedStyle = containerWindow.getComputedStyle(ctr);
        var position = computedStyle.getPropertyValue('position');
        if (position === 'static') {
          warn('A Cytoscape container has style position:static and so can not use UI extensions properly');
        }
      }
      r.selection = [undefined, undefined, undefined, undefined, 0]; // Coordinates for selection box, plus enabled flag

      r.bezierProjPcts = [0.05, 0.225, 0.4, 0.5, 0.6, 0.775, 0.95];

      //--Pointer-related data
      r.hoverData = {
        down: null,
        last: null,
        downTime: null,
        triggerMode: null,
        dragging: false,
        initialPan: [null, null],
        capture: false
      };
      r.dragData = {
        possibleDragElements: []
      };
      r.touchData = {
        start: null,
        capture: false,
        // These 3 fields related to tap, taphold events
        startPosition: [null, null, null, null, null, null],
        singleTouchStartTime: null,
        singleTouchMoved: true,
        now: [null, null, null, null, null, null],
        earlier: [null, null, null, null, null, null]
      };
      r.redraws = 0;
      r.showFps = options.showFps;
      r.debug = options.debug;
      r.hideEdgesOnViewport = options.hideEdgesOnViewport;
      r.textureOnViewport = options.textureOnViewport;
      r.wheelSensitivity = options.wheelSensitivity;
      r.motionBlurEnabled = options.motionBlur; // on by default
      r.forcedPixelRatio = number$1(options.pixelRatio) ? options.pixelRatio : null;
      r.motionBlur = options.motionBlur; // for initial kick off
      r.motionBlurOpacity = options.motionBlurOpacity;
      r.motionBlurTransparency = 1 - r.motionBlurOpacity;
      r.motionBlurPxRatio = 1;
      r.mbPxRBlurry = 1; //0.8;
      r.minMbLowQualFrames = 4;
      r.fullQualityMb = false;
      r.clearedForMotionBlur = [];
      r.desktopTapThreshold = options.desktopTapThreshold;
      r.desktopTapThreshold2 = options.desktopTapThreshold * options.desktopTapThreshold;
      r.touchTapThreshold = options.touchTapThreshold;
      r.touchTapThreshold2 = options.touchTapThreshold * options.touchTapThreshold;
      r.tapholdDuration = 500;
      r.bindings = [];
      r.beforeRenderCallbacks = [];
      r.beforeRenderPriorities = {
        // higher priority execs before lower one
        animations: 400,
        eleCalcs: 300,
        eleTxrDeq: 200,
        lyrTxrDeq: 150,
        lyrTxrSkip: 100
      };
      r.registerNodeShapes();
      r.registerArrowShapes();
      r.registerCalculationListeners();
    };
    BRp.notify = function (eventName, eles) {
      var r = this;
      var cy = r.cy;

      // the renderer can't be notified after it's destroyed
      if (this.destroyed) {
        return;
      }
      if (eventName === 'init') {
        r.load();
        return;
      }
      if (eventName === 'destroy') {
        r.destroy();
        return;
      }
      if (eventName === 'add' || eventName === 'remove' || eventName === 'move' && cy.hasCompoundNodes() || eventName === 'load' || eventName === 'zorder' || eventName === 'mount') {
        r.invalidateCachedZSortedEles();
      }
      if (eventName === 'viewport') {
        r.redrawHint('select', true);
      }
      if (eventName === 'load' || eventName === 'resize' || eventName === 'mount') {
        r.invalidateContainerClientCoordsCache();
        r.matchCanvasSize(r.container);
      }
      r.redrawHint('eles', true);
      r.redrawHint('drag', true);
      this.startRenderLoop();
      this.redraw();
    };
    BRp.destroy = function () {
      var r = this;
      r.destroyed = true;
      r.cy.stopAnimationLoop();
      for (var i = 0; i < r.bindings.length; i++) {
        var binding = r.bindings[i];
        var b = binding;
        var tgt = b.target;
        (tgt.off || tgt.removeEventListener).apply(tgt, b.args);
      }
      r.bindings = [];
      r.beforeRenderCallbacks = [];
      r.onUpdateEleCalcsFns = [];
      if (r.removeObserver) {
        r.removeObserver.disconnect();
      }
      if (r.styleObserver) {
        r.styleObserver.disconnect();
      }
      if (r.resizeObserver) {
        r.resizeObserver.disconnect();
      }
      if (r.labelCalcDiv) {
        try {
          document.body.removeChild(r.labelCalcDiv); // eslint-disable-line no-undef
        } catch (e) {
          // ie10 issue #1014
        }
      }
    };
    BRp.isHeadless = function () {
      return false;
    };
    [BRp$f, BRp$5, BRp$4, BRp$3, BRp$2, BRp$1].forEach(function (props) {
      extend$1(BRp, props);
    });

    var fullFpsTime = 1000 / 60; // assume 60 frames per second

    var defs = {
      setupDequeueing: function setupDequeueing(opts) {
        return function setupDequeueingImpl() {
          var self = this;
          var r = this.renderer;
          if (self.dequeueingSetup) {
            return;
          } else {
            self.dequeueingSetup = true;
          }
          var queueRedraw = debounce_1(function () {
            r.redrawHint('eles', true);
            r.redrawHint('drag', true);
            r.redraw();
          }, opts.deqRedrawThreshold);
          var dequeue = function dequeue(willDraw, frameStartTime) {
            var startTime = performanceNow();
            var avgRenderTime = r.averageRedrawTime;
            var renderTime = r.lastRedrawTime;
            var deqd = [];
            var extent = r.cy.extent();
            var pixelRatio = r.getPixelRatio();

            // if we aren't in a tick that causes a draw, then the rendered style
            // queue won't automatically be flushed before dequeueing starts
            if (!willDraw) {
              r.flushRenderedStyleQueue();
            }
            while (true) {
              // eslint-disable-line no-constant-condition
              var now = performanceNow();
              var duration = now - startTime;
              var frameDuration = now - frameStartTime;
              if (renderTime < fullFpsTime) {
                // if we're rendering faster than the ideal fps, then do dequeueing
                // during all of the remaining frame time

                var timeAvailable = fullFpsTime - (willDraw ? avgRenderTime : 0);
                if (frameDuration >= opts.deqFastCost * timeAvailable) {
                  break;
                }
              } else {
                if (willDraw) {
                  if (duration >= opts.deqCost * renderTime || duration >= opts.deqAvgCost * avgRenderTime) {
                    break;
                  }
                } else if (frameDuration >= opts.deqNoDrawCost * fullFpsTime) {
                  break;
                }
              }
              var thisDeqd = opts.deq(self, pixelRatio, extent);
              if (thisDeqd.length > 0) {
                for (var i = 0; i < thisDeqd.length; i++) {
                  deqd.push(thisDeqd[i]);
                }
              } else {
                break;
              }
            }

            // callbacks on dequeue
            if (deqd.length > 0) {
              opts.onDeqd(self, deqd);
              if (!willDraw && opts.shouldRedraw(self, deqd, pixelRatio, extent)) {
                queueRedraw();
              }
            }
          };
          var priority = opts.priority || noop$1;
          r.beforeRender(dequeue, priority(self));
        };
      }
    };

    // Allows lookups for (ele, lvl) => cache.
    // Uses keys so elements may share the same cache.
    var ElementTextureCacheLookup = /*#__PURE__*/function () {
      function ElementTextureCacheLookup(getKey) {
        var doesEleInvalidateKey = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : falsify;
        _classCallCheck(this, ElementTextureCacheLookup);
        this.idsByKey = new Map$2();
        this.keyForId = new Map$2();
        this.cachesByLvl = new Map$2();
        this.lvls = [];
        this.getKey = getKey;
        this.doesEleInvalidateKey = doesEleInvalidateKey;
      }
      _createClass(ElementTextureCacheLookup, [{
        key: "getIdsFor",
        value: function getIdsFor(key) {
          if (key == null) {
            error("Can not get id list for null key");
          }
          var idsByKey = this.idsByKey;
          var ids = this.idsByKey.get(key);
          if (!ids) {
            ids = new Set$1();
            idsByKey.set(key, ids);
          }
          return ids;
        }
      }, {
        key: "addIdForKey",
        value: function addIdForKey(key, id) {
          if (key != null) {
            this.getIdsFor(key).add(id);
          }
        }
      }, {
        key: "deleteIdForKey",
        value: function deleteIdForKey(key, id) {
          if (key != null) {
            this.getIdsFor(key)["delete"](id);
          }
        }
      }, {
        key: "getNumberOfIdsForKey",
        value: function getNumberOfIdsForKey(key) {
          if (key == null) {
            return 0;
          } else {
            return this.getIdsFor(key).size;
          }
        }
      }, {
        key: "updateKeyMappingFor",
        value: function updateKeyMappingFor(ele) {
          var id = ele.id();
          var prevKey = this.keyForId.get(id);
          var currKey = this.getKey(ele);
          this.deleteIdForKey(prevKey, id);
          this.addIdForKey(currKey, id);
          this.keyForId.set(id, currKey);
        }
      }, {
        key: "deleteKeyMappingFor",
        value: function deleteKeyMappingFor(ele) {
          var id = ele.id();
          var prevKey = this.keyForId.get(id);
          this.deleteIdForKey(prevKey, id);
          this.keyForId["delete"](id);
        }
      }, {
        key: "keyHasChangedFor",
        value: function keyHasChangedFor(ele) {
          var id = ele.id();
          var prevKey = this.keyForId.get(id);
          var newKey = this.getKey(ele);
          return prevKey !== newKey;
        }
      }, {
        key: "isInvalid",
        value: function isInvalid(ele) {
          return this.keyHasChangedFor(ele) || this.doesEleInvalidateKey(ele);
        }
      }, {
        key: "getCachesAt",
        value: function getCachesAt(lvl) {
          var cachesByLvl = this.cachesByLvl,
            lvls = this.lvls;
          var caches = cachesByLvl.get(lvl);
          if (!caches) {
            caches = new Map$2();
            cachesByLvl.set(lvl, caches);
            lvls.push(lvl);
          }
          return caches;
        }
      }, {
        key: "getCache",
        value: function getCache(key, lvl) {
          return this.getCachesAt(lvl).get(key);
        }
      }, {
        key: "get",
        value: function get(ele, lvl) {
          var key = this.getKey(ele);
          var cache = this.getCache(key, lvl);

          // getting for an element may need to add to the id list b/c eles can share keys
          if (cache != null) {
            this.updateKeyMappingFor(ele);
          }
          return cache;
        }
      }, {
        key: "getForCachedKey",
        value: function getForCachedKey(ele, lvl) {
          var key = this.keyForId.get(ele.id()); // n.b. use cached key, not newly computed key
          var cache = this.getCache(key, lvl);
          return cache;
        }
      }, {
        key: "hasCache",
        value: function hasCache(key, lvl) {
          return this.getCachesAt(lvl).has(key);
        }
      }, {
        key: "has",
        value: function has(ele, lvl) {
          var key = this.getKey(ele);
          return this.hasCache(key, lvl);
        }
      }, {
        key: "setCache",
        value: function setCache(key, lvl, cache) {
          cache.key = key;
          this.getCachesAt(lvl).set(key, cache);
        }
      }, {
        key: "set",
        value: function set(ele, lvl, cache) {
          var key = this.getKey(ele);
          this.setCache(key, lvl, cache);
          this.updateKeyMappingFor(ele);
        }
      }, {
        key: "deleteCache",
        value: function deleteCache(key, lvl) {
          this.getCachesAt(lvl)["delete"](key);
        }
      }, {
        key: "delete",
        value: function _delete(ele, lvl) {
          var key = this.getKey(ele);
          this.deleteCache(key, lvl);
        }
      }, {
        key: "invalidateKey",
        value: function invalidateKey(key) {
          var _this = this;
          this.lvls.forEach(function (lvl) {
            return _this.deleteCache(key, lvl);
          });
        }

        // returns true if no other eles reference the invalidated cache (n.b. other eles may need the cache with the same key)
      }, {
        key: "invalidate",
        value: function invalidate(ele) {
          var id = ele.id();
          var key = this.keyForId.get(id); // n.b. use stored key rather than current (potential key)

          this.deleteKeyMappingFor(ele);
          var entireKeyInvalidated = this.doesEleInvalidateKey(ele);
          if (entireKeyInvalidated) {
            // clear mapping for current key
            this.invalidateKey(key);
          }
          return entireKeyInvalidated || this.getNumberOfIdsForKey(key) === 0;
        }
      }]);
      return ElementTextureCacheLookup;
    }();

    var minTxrH = 25; // the size of the texture cache for small height eles (special case)
    var txrStepH = 50; // the min size of the regular cache, and the size it increases with each step up
    var minLvl$1 = -4; // when scaling smaller than that we don't need to re-render
    var maxLvl$1 = 3; // when larger than this scale just render directly (caching is not helpful)
    var maxZoom$1 = 7.99; // beyond this zoom level, layered textures are not used
    var eleTxrSpacing = 8; // spacing between elements on textures to avoid blitting overlaps
    var defTxrWidth = 1024; // default/minimum texture width
    var maxTxrW = 1024; // the maximum width of a texture
    var maxTxrH = 1024; // the maximum height of a texture
    var minUtility = 0.2; // if usage of texture is less than this, it is retired
    var maxFullness = 0.8; // fullness of texture after which queue removal is checked
    var maxFullnessChecks = 10; // dequeued after this many checks
    var deqCost$1 = 0.15; // % of add'l rendering cost allowed for dequeuing ele caches each frame
    var deqAvgCost$1 = 0.1; // % of add'l rendering cost compared to average overall redraw time
    var deqNoDrawCost$1 = 0.9; // % of avg frame time that can be used for dequeueing when not drawing
    var deqFastCost$1 = 0.9; // % of frame time to be used when >60fps
    var deqRedrawThreshold$1 = 100; // time to batch redraws together from dequeueing to allow more dequeueing calcs to happen in the meanwhile
    var maxDeqSize$1 = 1; // number of eles to dequeue and render at higher texture in each batch

    var getTxrReasons = {
      dequeue: 'dequeue',
      downscale: 'downscale',
      highQuality: 'highQuality'
    };
    var initDefaults = defaults$g({
      getKey: null,
      doesEleInvalidateKey: falsify,
      drawElement: null,
      getBoundingBox: null,
      getRotationPoint: null,
      getRotationOffset: null,
      isVisible: trueify,
      allowEdgeTxrCaching: true,
      allowParentTxrCaching: true
    });
    var ElementTextureCache = function ElementTextureCache(renderer, initOptions) {
      var self = this;
      self.renderer = renderer;
      self.onDequeues = [];
      var opts = initDefaults(initOptions);
      extend$1(self, opts);
      self.lookup = new ElementTextureCacheLookup(opts.getKey, opts.doesEleInvalidateKey);
      self.setupDequeueing();
    };
    var ETCp = ElementTextureCache.prototype;
    ETCp.reasons = getTxrReasons;

    // the list of textures in which new subtextures for elements can be placed
    ETCp.getTextureQueue = function (txrH) {
      var self = this;
      self.eleImgCaches = self.eleImgCaches || {};
      return self.eleImgCaches[txrH] = self.eleImgCaches[txrH] || [];
    };

    // the list of usused textures which can be recycled (in use in texture queue)
    ETCp.getRetiredTextureQueue = function (txrH) {
      var self = this;
      var rtxtrQs = self.eleImgCaches.retired = self.eleImgCaches.retired || {};
      var rtxtrQ = rtxtrQs[txrH] = rtxtrQs[txrH] || [];
      return rtxtrQ;
    };

    // queue of element draw requests at different scale levels
    ETCp.getElementQueue = function () {
      var self = this;
      var q = self.eleCacheQueue = self.eleCacheQueue || new heap(function (a, b) {
        return b.reqs - a.reqs;
      });
      return q;
    };

    // queue of element draw requests at different scale levels (element id lookup)
    ETCp.getElementKeyToQueue = function () {
      var self = this;
      var k2q = self.eleKeyToCacheQueue = self.eleKeyToCacheQueue || {};
      return k2q;
    };
    ETCp.getElement = function (ele, bb, pxRatio, lvl, reason) {
      var self = this;
      var r = this.renderer;
      var zoom = r.cy.zoom();
      var lookup = this.lookup;
      if (!bb || bb.w === 0 || bb.h === 0 || isNaN(bb.w) || isNaN(bb.h) || !ele.visible() || ele.removed()) {
        return null;
      }
      if (!self.allowEdgeTxrCaching && ele.isEdge() || !self.allowParentTxrCaching && ele.isParent()) {
        return null;
      }
      if (lvl == null) {
        lvl = Math.ceil(log2(zoom * pxRatio));
      }
      if (lvl < minLvl$1) {
        lvl = minLvl$1;
      } else if (zoom >= maxZoom$1 || lvl > maxLvl$1) {
        return null;
      }
      var scale = Math.pow(2, lvl);
      var eleScaledH = bb.h * scale;
      var eleScaledW = bb.w * scale;
      var scaledLabelShown = r.eleTextBiggerThanMin(ele, scale);
      if (!this.isVisible(ele, scaledLabelShown)) {
        return null;
      }
      var eleCache = lookup.get(ele, lvl);

      // if this get was on an unused/invalidated cache, then restore the texture usage metric
      if (eleCache && eleCache.invalidated) {
        eleCache.invalidated = false;
        eleCache.texture.invalidatedWidth -= eleCache.width;
      }
      if (eleCache) {
        return eleCache;
      }
      var txrH; // which texture height this ele belongs to

      if (eleScaledH <= minTxrH) {
        txrH = minTxrH;
      } else if (eleScaledH <= txrStepH) {
        txrH = txrStepH;
      } else {
        txrH = Math.ceil(eleScaledH / txrStepH) * txrStepH;
      }
      if (eleScaledH > maxTxrH || eleScaledW > maxTxrW) {
        return null; // caching large elements is not efficient
      }

      var txrQ = self.getTextureQueue(txrH);

      // first try the second last one in case it has space at the end
      var txr = txrQ[txrQ.length - 2];
      var addNewTxr = function addNewTxr() {
        return self.recycleTexture(txrH, eleScaledW) || self.addTexture(txrH, eleScaledW);
      };

      // try the last one if there is no second last one
      if (!txr) {
        txr = txrQ[txrQ.length - 1];
      }

      // if the last one doesn't exist, we need a first one
      if (!txr) {
        txr = addNewTxr();
      }

      // if there's no room in the current texture, we need a new one
      if (txr.width - txr.usedWidth < eleScaledW) {
        txr = addNewTxr();
      }
      var scalableFrom = function scalableFrom(otherCache) {
        return otherCache && otherCache.scaledLabelShown === scaledLabelShown;
      };
      var deqing = reason && reason === getTxrReasons.dequeue;
      var highQualityReq = reason && reason === getTxrReasons.highQuality;
      var downscaleReq = reason && reason === getTxrReasons.downscale;
      var higherCache; // the nearest cache with a higher level
      for (var l = lvl + 1; l <= maxLvl$1; l++) {
        var c = lookup.get(ele, l);
        if (c) {
          higherCache = c;
          break;
        }
      }
      var oneUpCache = higherCache && higherCache.level === lvl + 1 ? higherCache : null;
      var downscale = function downscale() {
        txr.context.drawImage(oneUpCache.texture.canvas, oneUpCache.x, 0, oneUpCache.width, oneUpCache.height, txr.usedWidth, 0, eleScaledW, eleScaledH);
      };

      // reset ele area in texture
      txr.context.setTransform(1, 0, 0, 1, 0, 0);
      txr.context.clearRect(txr.usedWidth, 0, eleScaledW, txrH);
      if (scalableFrom(oneUpCache)) {
        // then we can relatively cheaply rescale the existing image w/o rerendering
        downscale();
      } else if (scalableFrom(higherCache)) {
        // then use the higher cache for now and queue the next level down
        // to cheaply scale towards the smaller level

        if (highQualityReq) {
          for (var _l = higherCache.level; _l > lvl; _l--) {
            oneUpCache = self.getElement(ele, bb, pxRatio, _l, getTxrReasons.downscale);
          }
          downscale();
        } else {
          self.queueElement(ele, higherCache.level - 1);
          return higherCache;
        }
      } else {
        var lowerCache; // the nearest cache with a lower level
        if (!deqing && !highQualityReq && !downscaleReq) {
          for (var _l2 = lvl - 1; _l2 >= minLvl$1; _l2--) {
            var _c = lookup.get(ele, _l2);
            if (_c) {
              lowerCache = _c;
              break;
            }
          }
        }
        if (scalableFrom(lowerCache)) {
          // then use the lower quality cache for now and queue the better one for later

          self.queueElement(ele, lvl);
          return lowerCache;
        }
        txr.context.translate(txr.usedWidth, 0);
        txr.context.scale(scale, scale);
        this.drawElement(txr.context, ele, bb, scaledLabelShown, false);
        txr.context.scale(1 / scale, 1 / scale);
        txr.context.translate(-txr.usedWidth, 0);
      }
      eleCache = {
        x: txr.usedWidth,
        texture: txr,
        level: lvl,
        scale: scale,
        width: eleScaledW,
        height: eleScaledH,
        scaledLabelShown: scaledLabelShown
      };
      txr.usedWidth += Math.ceil(eleScaledW + eleTxrSpacing);
      txr.eleCaches.push(eleCache);
      lookup.set(ele, lvl, eleCache);
      self.checkTextureFullness(txr);
      return eleCache;
    };
    ETCp.invalidateElements = function (eles) {
      for (var i = 0; i < eles.length; i++) {
        this.invalidateElement(eles[i]);
      }
    };
    ETCp.invalidateElement = function (ele) {
      var self = this;
      var lookup = self.lookup;
      var caches = [];
      var invalid = lookup.isInvalid(ele);
      if (!invalid) {
        return; // override the invalidation request if the element key has not changed
      }

      for (var lvl = minLvl$1; lvl <= maxLvl$1; lvl++) {
        var cache = lookup.getForCachedKey(ele, lvl);
        if (cache) {
          caches.push(cache);
        }
      }
      var noOtherElesUseCache = lookup.invalidate(ele);
      if (noOtherElesUseCache) {
        for (var i = 0; i < caches.length; i++) {
          var _cache = caches[i];
          var txr = _cache.texture;

          // remove space from the texture it belongs to
          txr.invalidatedWidth += _cache.width;

          // mark the cache as invalidated
          _cache.invalidated = true;

          // retire the texture if its utility is low
          self.checkTextureUtility(txr);
        }
      }

      // remove from queue since the old req was for the old state
      self.removeFromQueue(ele);
    };
    ETCp.checkTextureUtility = function (txr) {
      // invalidate all entries in the cache if the cache size is small
      if (txr.invalidatedWidth >= minUtility * txr.width) {
        this.retireTexture(txr);
      }
    };
    ETCp.checkTextureFullness = function (txr) {
      // if texture has been mostly filled and passed over several times, remove
      // it from the queue so we don't need to waste time looking at it to put new things

      var self = this;
      var txrQ = self.getTextureQueue(txr.height);
      if (txr.usedWidth / txr.width > maxFullness && txr.fullnessChecks >= maxFullnessChecks) {
        removeFromArray(txrQ, txr);
      } else {
        txr.fullnessChecks++;
      }
    };
    ETCp.retireTexture = function (txr) {
      var self = this;
      var txrH = txr.height;
      var txrQ = self.getTextureQueue(txrH);
      var lookup = this.lookup;

      // retire the texture from the active / searchable queue:

      removeFromArray(txrQ, txr);
      txr.retired = true;

      // remove the refs from the eles to the caches:

      var eleCaches = txr.eleCaches;
      for (var i = 0; i < eleCaches.length; i++) {
        var eleCache = eleCaches[i];
        lookup.deleteCache(eleCache.key, eleCache.level);
      }
      clearArray(eleCaches);

      // add the texture to a retired queue so it can be recycled in future:

      var rtxtrQ = self.getRetiredTextureQueue(txrH);
      rtxtrQ.push(txr);
    };
    ETCp.addTexture = function (txrH, minW) {
      var self = this;
      var txrQ = self.getTextureQueue(txrH);
      var txr = {};
      txrQ.push(txr);
      txr.eleCaches = [];
      txr.height = txrH;
      txr.width = Math.max(defTxrWidth, minW);
      txr.usedWidth = 0;
      txr.invalidatedWidth = 0;
      txr.fullnessChecks = 0;
      txr.canvas = self.renderer.makeOffscreenCanvas(txr.width, txr.height);
      txr.context = txr.canvas.getContext('2d');
      return txr;
    };
    ETCp.recycleTexture = function (txrH, minW) {
      var self = this;
      var txrQ = self.getTextureQueue(txrH);
      var rtxtrQ = self.getRetiredTextureQueue(txrH);
      for (var i = 0; i < rtxtrQ.length; i++) {
        var txr = rtxtrQ[i];
        if (txr.width >= minW) {
          txr.retired = false;
          txr.usedWidth = 0;
          txr.invalidatedWidth = 0;
          txr.fullnessChecks = 0;
          clearArray(txr.eleCaches);
          txr.context.setTransform(1, 0, 0, 1, 0, 0);
          txr.context.clearRect(0, 0, txr.width, txr.height);
          removeFromArray(rtxtrQ, txr);
          txrQ.push(txr);
          return txr;
        }
      }
    };
    ETCp.queueElement = function (ele, lvl) {
      var self = this;
      var q = self.getElementQueue();
      var k2q = self.getElementKeyToQueue();
      var key = this.getKey(ele);
      var existingReq = k2q[key];
      if (existingReq) {
        // use the max lvl b/c in between lvls are cheap to make
        existingReq.level = Math.max(existingReq.level, lvl);
        existingReq.eles.merge(ele);
        existingReq.reqs++;
        q.updateItem(existingReq);
      } else {
        var req = {
          eles: ele.spawn().merge(ele),
          level: lvl,
          reqs: 1,
          key: key
        };
        q.push(req);
        k2q[key] = req;
      }
    };
    ETCp.dequeue = function (pxRatio /*, extent*/) {
      var self = this;
      var q = self.getElementQueue();
      var k2q = self.getElementKeyToQueue();
      var dequeued = [];
      var lookup = self.lookup;
      for (var i = 0; i < maxDeqSize$1; i++) {
        if (q.size() > 0) {
          var req = q.pop();
          var key = req.key;
          var ele = req.eles[0]; // all eles have the same key
          var cacheExists = lookup.hasCache(ele, req.level);

          // clear out the key to req lookup
          k2q[key] = null;

          // dequeueing isn't necessary with an existing cache
          if (cacheExists) {
            continue;
          }
          dequeued.push(req);
          var bb = self.getBoundingBox(ele);
          self.getElement(ele, bb, pxRatio, req.level, getTxrReasons.dequeue);
        } else {
          break;
        }
      }
      return dequeued;
    };
    ETCp.removeFromQueue = function (ele) {
      var self = this;
      var q = self.getElementQueue();
      var k2q = self.getElementKeyToQueue();
      var key = this.getKey(ele);
      var req = k2q[key];
      if (req != null) {
        if (req.eles.length === 1) {
          // remove if last ele in the req
          // bring to front of queue
          req.reqs = MAX_INT$1;
          q.updateItem(req);
          q.pop(); // remove from queue

          k2q[key] = null; // remove from lookup map
        } else {
          // otherwise just remove ele from req
          req.eles.unmerge(ele);
        }
      }
    };
    ETCp.onDequeue = function (fn) {
      this.onDequeues.push(fn);
    };
    ETCp.offDequeue = function (fn) {
      removeFromArray(this.onDequeues, fn);
    };
    ETCp.setupDequeueing = defs.setupDequeueing({
      deqRedrawThreshold: deqRedrawThreshold$1,
      deqCost: deqCost$1,
      deqAvgCost: deqAvgCost$1,
      deqNoDrawCost: deqNoDrawCost$1,
      deqFastCost: deqFastCost$1,
      deq: function deq(self, pxRatio, extent) {
        return self.dequeue(pxRatio, extent);
      },
      onDeqd: function onDeqd(self, deqd) {
        for (var i = 0; i < self.onDequeues.length; i++) {
          var fn = self.onDequeues[i];
          fn(deqd);
        }
      },
      shouldRedraw: function shouldRedraw(self, deqd, pxRatio, extent) {
        for (var i = 0; i < deqd.length; i++) {
          var eles = deqd[i].eles;
          for (var j = 0; j < eles.length; j++) {
            var bb = eles[j].boundingBox();
            if (boundingBoxesIntersect(bb, extent)) {
              return true;
            }
          }
        }
        return false;
      },
      priority: function priority(self) {
        return self.renderer.beforeRenderPriorities.eleTxrDeq;
      }
    });

    var defNumLayers = 1; // default number of layers to use
    var minLvl = -4; // when scaling smaller than that we don't need to re-render
    var maxLvl = 2; // when larger than this scale just render directly (caching is not helpful)
    var maxZoom = 3.99; // beyond this zoom level, layered textures are not used
    var deqRedrawThreshold = 50; // time to batch redraws together from dequeueing to allow more dequeueing calcs to happen in the meanwhile
    var refineEleDebounceTime = 50; // time to debounce sharper ele texture updates
    var deqCost = 0.15; // % of add'l rendering cost allowed for dequeuing ele caches each frame
    var deqAvgCost = 0.1; // % of add'l rendering cost compared to average overall redraw time
    var deqNoDrawCost = 0.9; // % of avg frame time that can be used for dequeueing when not drawing
    var deqFastCost = 0.9; // % of frame time to be used when >60fps
    var maxDeqSize = 1; // number of eles to dequeue and render at higher texture in each batch
    var invalidThreshold = 250; // time threshold for disabling b/c of invalidations
    var maxLayerArea = 4000 * 4000; // layers can't be bigger than this
    var useHighQualityEleTxrReqs = true; // whether to use high quality ele txr requests (generally faster and cheaper in the longterm)

    // var log = function(){ console.log.apply( console, arguments ); };

    var LayeredTextureCache = function LayeredTextureCache(renderer) {
      var self = this;
      var r = self.renderer = renderer;
      var cy = r.cy;
      self.layersByLevel = {}; // e.g. 2 => [ layer1, layer2, ..., layerN ]

      self.firstGet = true;
      self.lastInvalidationTime = performanceNow() - 2 * invalidThreshold;
      self.skipping = false;
      self.eleTxrDeqs = cy.collection();
      self.scheduleElementRefinement = debounce_1(function () {
        self.refineElementTextures(self.eleTxrDeqs);
        self.eleTxrDeqs.unmerge(self.eleTxrDeqs);
      }, refineEleDebounceTime);
      r.beforeRender(function (willDraw, now) {
        if (now - self.lastInvalidationTime <= invalidThreshold) {
          self.skipping = true;
        } else {
          self.skipping = false;
        }
      }, r.beforeRenderPriorities.lyrTxrSkip);
      var qSort = function qSort(a, b) {
        return b.reqs - a.reqs;
      };
      self.layersQueue = new heap(qSort);
      self.setupDequeueing();
    };
    var LTCp = LayeredTextureCache.prototype;
    var layerIdPool = 0;
    var MAX_INT = Math.pow(2, 53) - 1;
    LTCp.makeLayer = function (bb, lvl) {
      var scale = Math.pow(2, lvl);
      var w = Math.ceil(bb.w * scale);
      var h = Math.ceil(bb.h * scale);
      var canvas = this.renderer.makeOffscreenCanvas(w, h);
      var layer = {
        id: layerIdPool = ++layerIdPool % MAX_INT,
        bb: bb,
        level: lvl,
        width: w,
        height: h,
        canvas: canvas,
        context: canvas.getContext('2d'),
        eles: [],
        elesQueue: [],
        reqs: 0
      };

      // log('make layer %s with w %s and h %s and lvl %s', layer.id, layer.width, layer.height, layer.level);

      var cxt = layer.context;
      var dx = -layer.bb.x1;
      var dy = -layer.bb.y1;

      // do the transform on creation to save cycles (it's the same for all eles)
      cxt.scale(scale, scale);
      cxt.translate(dx, dy);
      return layer;
    };
    LTCp.getLayers = function (eles, pxRatio, lvl) {
      var self = this;
      var r = self.renderer;
      var cy = r.cy;
      var zoom = cy.zoom();
      var firstGet = self.firstGet;
      self.firstGet = false;

      // log('--\nget layers with %s eles', eles.length);
      //log eles.map(function(ele){ return ele.id() }) );

      if (lvl == null) {
        lvl = Math.ceil(log2(zoom * pxRatio));
        if (lvl < minLvl) {
          lvl = minLvl;
        } else if (zoom >= maxZoom || lvl > maxLvl) {
          return null;
        }
      }
      self.validateLayersElesOrdering(lvl, eles);
      var layersByLvl = self.layersByLevel;
      var scale = Math.pow(2, lvl);
      var layers = layersByLvl[lvl] = layersByLvl[lvl] || [];
      var bb;
      var lvlComplete = self.levelIsComplete(lvl, eles);
      var tmpLayers;
      var checkTempLevels = function checkTempLevels() {
        var canUseAsTmpLvl = function canUseAsTmpLvl(l) {
          self.validateLayersElesOrdering(l, eles);
          if (self.levelIsComplete(l, eles)) {
            tmpLayers = layersByLvl[l];
            return true;
          }
        };
        var checkLvls = function checkLvls(dir) {
          if (tmpLayers) {
            return;
          }
          for (var l = lvl + dir; minLvl <= l && l <= maxLvl; l += dir) {
            if (canUseAsTmpLvl(l)) {
              break;
            }
          }
        };
        checkLvls(+1);
        checkLvls(-1);

        // remove the invalid layers; they will be replaced as needed later in this function
        for (var i = layers.length - 1; i >= 0; i--) {
          var layer = layers[i];
          if (layer.invalid) {
            removeFromArray(layers, layer);
          }
        }
      };
      if (!lvlComplete) {
        // if the current level is incomplete, then use the closest, best quality layerset temporarily
        // and later queue the current layerset so we can get the proper quality level soon

        checkTempLevels();
      } else {
        // log('level complete, using existing layers\n--');
        return layers;
      }
      var getBb = function getBb() {
        if (!bb) {
          bb = makeBoundingBox();
          for (var i = 0; i < eles.length; i++) {
            updateBoundingBox(bb, eles[i].boundingBox());
          }
        }
        return bb;
      };
      var makeLayer = function makeLayer(opts) {
        opts = opts || {};
        var after = opts.after;
        getBb();
        var area = bb.w * scale * (bb.h * scale);
        if (area > maxLayerArea) {
          return null;
        }
        var layer = self.makeLayer(bb, lvl);
        if (after != null) {
          var index = layers.indexOf(after) + 1;
          layers.splice(index, 0, layer);
        } else if (opts.insert === undefined || opts.insert) {
          // no after specified => first layer made so put at start
          layers.unshift(layer);
        }

        // if( tmpLayers ){
        //self.queueLayer( layer );
        // }

        return layer;
      };
      if (self.skipping && !firstGet) {
        // log('skip layers');
        return null;
      }

      // log('do layers');

      var layer = null;
      var maxElesPerLayer = eles.length / defNumLayers;
      var allowLazyQueueing = !firstGet;
      for (var i = 0; i < eles.length; i++) {
        var ele = eles[i];
        var rs = ele._private.rscratch;
        var caches = rs.imgLayerCaches = rs.imgLayerCaches || {};

        // log('look at ele', ele.id());

        var existingLayer = caches[lvl];
        if (existingLayer) {
          // reuse layer for later eles
          // log('reuse layer for', ele.id());
          layer = existingLayer;
          continue;
        }
        if (!layer || layer.eles.length >= maxElesPerLayer || !boundingBoxInBoundingBox(layer.bb, ele.boundingBox())) {
          // log('make new layer for ele %s', ele.id());

          layer = makeLayer({
            insert: true,
            after: layer
          });

          // if now layer can be built then we can't use layers at this level
          if (!layer) {
            return null;
          }

          // log('new layer with id %s', layer.id);
        }

        if (tmpLayers || allowLazyQueueing) {
          // log('queue ele %s in layer %s', ele.id(), layer.id);
          self.queueLayer(layer, ele);
        } else {
          // log('draw ele %s in layer %s', ele.id(), layer.id);
          self.drawEleInLayer(layer, ele, lvl, pxRatio);
        }
        layer.eles.push(ele);
        caches[lvl] = layer;
      }

      // log('--');

      if (tmpLayers) {
        // then we only queued the current layerset and can't draw it yet
        return tmpLayers;
      }
      if (allowLazyQueueing) {
        // log('lazy queue level', lvl);
        return null;
      }
      return layers;
    };

    // a layer may want to use an ele cache of a higher level to avoid blurriness
    // so the layer level might not equal the ele level
    LTCp.getEleLevelForLayerLevel = function (lvl, pxRatio) {
      return lvl;
    };
    LTCp.drawEleInLayer = function (layer, ele, lvl, pxRatio) {
      var self = this;
      var r = this.renderer;
      var context = layer.context;
      var bb = ele.boundingBox();
      if (bb.w === 0 || bb.h === 0 || !ele.visible()) {
        return;
      }
      lvl = self.getEleLevelForLayerLevel(lvl, pxRatio);
      {
        r.setImgSmoothing(context, false);
      }
      {
        r.drawCachedElement(context, ele, null, null, lvl, useHighQualityEleTxrReqs);
      }
      {
        r.setImgSmoothing(context, true);
      }
    };
    LTCp.levelIsComplete = function (lvl, eles) {
      var self = this;
      var layers = self.layersByLevel[lvl];
      if (!layers || layers.length === 0) {
        return false;
      }
      var numElesInLayers = 0;
      for (var i = 0; i < layers.length; i++) {
        var layer = layers[i];

        // if there are any eles needed to be drawn yet, the level is not complete
        if (layer.reqs > 0) {
          return false;
        }

        // if the layer is invalid, the level is not complete
        if (layer.invalid) {
          return false;
        }
        numElesInLayers += layer.eles.length;
      }

      // we should have exactly the number of eles passed in to be complete
      if (numElesInLayers !== eles.length) {
        return false;
      }
      return true;
    };
    LTCp.validateLayersElesOrdering = function (lvl, eles) {
      var layers = this.layersByLevel[lvl];
      if (!layers) {
        return;
      }

      // if in a layer the eles are not in the same order, then the layer is invalid
      // (i.e. there is an ele in between the eles in the layer)

      for (var i = 0; i < layers.length; i++) {
        var layer = layers[i];
        var offset = -1;

        // find the offset
        for (var j = 0; j < eles.length; j++) {
          if (layer.eles[0] === eles[j]) {
            offset = j;
            break;
          }
        }
        if (offset < 0) {
          // then the layer has nonexistent elements and is invalid
          this.invalidateLayer(layer);
          continue;
        }

        // the eles in the layer must be in the same continuous order, else the layer is invalid

        var o = offset;
        for (var j = 0; j < layer.eles.length; j++) {
          if (layer.eles[j] !== eles[o + j]) {
            // log('invalidate based on ordering', layer.id);

            this.invalidateLayer(layer);
            break;
          }
        }
      }
    };
    LTCp.updateElementsInLayers = function (eles, update) {
      var self = this;
      var isEles = element(eles[0]);

      // collect udpated elements (cascaded from the layers) and update each
      // layer itself along the way
      for (var i = 0; i < eles.length; i++) {
        var req = isEles ? null : eles[i];
        var ele = isEles ? eles[i] : eles[i].ele;
        var rs = ele._private.rscratch;
        var caches = rs.imgLayerCaches = rs.imgLayerCaches || {};
        for (var l = minLvl; l <= maxLvl; l++) {
          var layer = caches[l];
          if (!layer) {
            continue;
          }

          // if update is a request from the ele cache, then it affects only
          // the matching level
          if (req && self.getEleLevelForLayerLevel(layer.level) !== req.level) {
            continue;
          }
          update(layer, ele, req);
        }
      }
    };
    LTCp.haveLayers = function () {
      var self = this;
      var haveLayers = false;
      for (var l = minLvl; l <= maxLvl; l++) {
        var layers = self.layersByLevel[l];
        if (layers && layers.length > 0) {
          haveLayers = true;
          break;
        }
      }
      return haveLayers;
    };
    LTCp.invalidateElements = function (eles) {
      var self = this;
      if (eles.length === 0) {
        return;
      }
      self.lastInvalidationTime = performanceNow();

      // log('update invalidate layer time from eles');

      if (eles.length === 0 || !self.haveLayers()) {
        return;
      }
      self.updateElementsInLayers(eles, function invalAssocLayers(layer, ele, req) {
        self.invalidateLayer(layer);
      });
    };
    LTCp.invalidateLayer = function (layer) {
      // log('update invalidate layer time');

      this.lastInvalidationTime = performanceNow();
      if (layer.invalid) {
        return;
      } // save cycles

      var lvl = layer.level;
      var eles = layer.eles;
      var layers = this.layersByLevel[lvl];

      // log('invalidate layer', layer.id );

      removeFromArray(layers, layer);
      // layer.eles = [];

      layer.elesQueue = [];
      layer.invalid = true;
      if (layer.replacement) {
        layer.replacement.invalid = true;
      }
      for (var i = 0; i < eles.length; i++) {
        var caches = eles[i]._private.rscratch.imgLayerCaches;
        if (caches) {
          caches[lvl] = null;
        }
      }
    };
    LTCp.refineElementTextures = function (eles) {
      var self = this;

      // log('refine', eles.length);

      self.updateElementsInLayers(eles, function refineEachEle(layer, ele, req) {
        var rLyr = layer.replacement;
        if (!rLyr) {
          rLyr = layer.replacement = self.makeLayer(layer.bb, layer.level);
          rLyr.replaces = layer;
          rLyr.eles = layer.eles;

          // log('make replacement layer %s for %s with level %s', rLyr.id, layer.id, rLyr.level);
        }

        if (!rLyr.reqs) {
          for (var i = 0; i < rLyr.eles.length; i++) {
            self.queueLayer(rLyr, rLyr.eles[i]);
          }

          // log('queue replacement layer refinement', rLyr.id);
        }
      });
    };

    LTCp.enqueueElementRefinement = function (ele) {
      this.eleTxrDeqs.merge(ele);
      this.scheduleElementRefinement();
    };
    LTCp.queueLayer = function (layer, ele) {
      var self = this;
      var q = self.layersQueue;
      var elesQ = layer.elesQueue;
      var hasId = elesQ.hasId = elesQ.hasId || {};

      // if a layer is going to be replaced, queuing is a waste of time
      if (layer.replacement) {
        return;
      }
      if (ele) {
        if (hasId[ele.id()]) {
          return;
        }
        elesQ.push(ele);
        hasId[ele.id()] = true;
      }
      if (layer.reqs) {
        layer.reqs++;
        q.updateItem(layer);
      } else {
        layer.reqs = 1;
        q.push(layer);
      }
    };
    LTCp.dequeue = function (pxRatio) {
      var self = this;
      var q = self.layersQueue;
      var deqd = [];
      var eleDeqs = 0;
      while (eleDeqs < maxDeqSize) {
        if (q.size() === 0) {
          break;
        }
        var layer = q.peek();

        // if a layer has been or will be replaced, then don't waste time with it
        if (layer.replacement) {
          // log('layer %s in queue skipped b/c it already has a replacement', layer.id);
          q.pop();
          continue;
        }

        // if this is a replacement layer that has been superceded, then forget it
        if (layer.replaces && layer !== layer.replaces.replacement) {
          // log('layer is no longer the most uptodate replacement; dequeued', layer.id)
          q.pop();
          continue;
        }
        if (layer.invalid) {
          // log('replacement layer %s is invalid; dequeued', layer.id);
          q.pop();
          continue;
        }
        var ele = layer.elesQueue.shift();
        if (ele) {
          // log('dequeue layer %s', layer.id);

          self.drawEleInLayer(layer, ele, layer.level, pxRatio);
          eleDeqs++;
        }
        if (deqd.length === 0) {
          // we need only one entry in deqd to queue redrawing etc
          deqd.push(true);
        }

        // if the layer has all its eles done, then remove from the queue
        if (layer.elesQueue.length === 0) {
          q.pop();
          layer.reqs = 0;

          // log('dequeue of layer %s complete', layer.id);

          // when a replacement layer is dequeued, it replaces the old layer in the level
          if (layer.replaces) {
            self.applyLayerReplacement(layer);
          }
          self.requestRedraw();
        }
      }
      return deqd;
    };
    LTCp.applyLayerReplacement = function (layer) {
      var self = this;
      var layersInLevel = self.layersByLevel[layer.level];
      var replaced = layer.replaces;
      var index = layersInLevel.indexOf(replaced);

      // if the replaced layer is not in the active list for the level, then replacing
      // refs would be a mistake (i.e. overwriting the true active layer)
      if (index < 0 || replaced.invalid) {
        // log('replacement layer would have no effect', layer.id);
        return;
      }
      layersInLevel[index] = layer; // replace level ref

      // replace refs in eles
      for (var i = 0; i < layer.eles.length; i++) {
        var _p = layer.eles[i]._private;
        var cache = _p.imgLayerCaches = _p.imgLayerCaches || {};
        if (cache) {
          cache[layer.level] = layer;
        }
      }

      // log('apply replacement layer %s over %s', layer.id, replaced.id);

      self.requestRedraw();
    };
    LTCp.requestRedraw = debounce_1(function () {
      var r = this.renderer;
      r.redrawHint('eles', true);
      r.redrawHint('drag', true);
      r.redraw();
    }, 100);
    LTCp.setupDequeueing = defs.setupDequeueing({
      deqRedrawThreshold: deqRedrawThreshold,
      deqCost: deqCost,
      deqAvgCost: deqAvgCost,
      deqNoDrawCost: deqNoDrawCost,
      deqFastCost: deqFastCost,
      deq: function deq(self, pxRatio) {
        return self.dequeue(pxRatio);
      },
      onDeqd: noop$1,
      shouldRedraw: trueify,
      priority: function priority(self) {
        return self.renderer.beforeRenderPriorities.lyrTxrDeq;
      }
    });

    var CRp$a = {};
    var impl;
    function polygon(context, points) {
      for (var i = 0; i < points.length; i++) {
        var pt = points[i];
        context.lineTo(pt.x, pt.y);
      }
    }
    function triangleBackcurve(context, points, controlPoint) {
      var firstPt;
      for (var i = 0; i < points.length; i++) {
        var pt = points[i];
        if (i === 0) {
          firstPt = pt;
        }
        context.lineTo(pt.x, pt.y);
      }
      context.quadraticCurveTo(controlPoint.x, controlPoint.y, firstPt.x, firstPt.y);
    }
    function triangleTee(context, trianglePoints, teePoints) {
      if (context.beginPath) {
        context.beginPath();
      }
      var triPts = trianglePoints;
      for (var i = 0; i < triPts.length; i++) {
        var pt = triPts[i];
        context.lineTo(pt.x, pt.y);
      }
      var teePts = teePoints;
      var firstTeePt = teePoints[0];
      context.moveTo(firstTeePt.x, firstTeePt.y);
      for (var i = 1; i < teePts.length; i++) {
        var pt = teePts[i];
        context.lineTo(pt.x, pt.y);
      }
      if (context.closePath) {
        context.closePath();
      }
    }
    function circleTriangle(context, trianglePoints, rx, ry, r) {
      if (context.beginPath) {
        context.beginPath();
      }
      context.arc(rx, ry, r, 0, Math.PI * 2, false);
      var triPts = trianglePoints;
      var firstTrPt = triPts[0];
      context.moveTo(firstTrPt.x, firstTrPt.y);
      for (var i = 0; i < triPts.length; i++) {
        var pt = triPts[i];
        context.lineTo(pt.x, pt.y);
      }
      if (context.closePath) {
        context.closePath();
      }
    }
    function circle(context, rx, ry, r) {
      context.arc(rx, ry, r, 0, Math.PI * 2, false);
    }
    CRp$a.arrowShapeImpl = function (name) {
      return (impl || (impl = {
        'polygon': polygon,
        'triangle-backcurve': triangleBackcurve,
        'triangle-tee': triangleTee,
        'circle-triangle': circleTriangle,
        'triangle-cross': triangleTee,
        'circle': circle
      }))[name];
    };

    var CRp$9 = {};
    CRp$9.drawElement = function (context, ele, shiftToOriginWithBb, showLabel, showOverlay, showOpacity) {
      var r = this;
      if (ele.isNode()) {
        r.drawNode(context, ele, shiftToOriginWithBb, showLabel, showOverlay, showOpacity);
      } else {
        r.drawEdge(context, ele, shiftToOriginWithBb, showLabel, showOverlay, showOpacity);
      }
    };
    CRp$9.drawElementOverlay = function (context, ele) {
      var r = this;
      if (ele.isNode()) {
        r.drawNodeOverlay(context, ele);
      } else {
        r.drawEdgeOverlay(context, ele);
      }
    };
    CRp$9.drawElementUnderlay = function (context, ele) {
      var r = this;
      if (ele.isNode()) {
        r.drawNodeUnderlay(context, ele);
      } else {
        r.drawEdgeUnderlay(context, ele);
      }
    };
    CRp$9.drawCachedElementPortion = function (context, ele, eleTxrCache, pxRatio, lvl, reason, getRotation, getOpacity) {
      var r = this;
      var bb = eleTxrCache.getBoundingBox(ele);
      if (bb.w === 0 || bb.h === 0) {
        return;
      } // ignore zero size case

      var eleCache = eleTxrCache.getElement(ele, bb, pxRatio, lvl, reason);
      if (eleCache != null) {
        var opacity = getOpacity(r, ele);
        if (opacity === 0) {
          return;
        }
        var theta = getRotation(r, ele);
        var x1 = bb.x1,
          y1 = bb.y1,
          w = bb.w,
          h = bb.h;
        var x, y, sx, sy, smooth;
        if (theta !== 0) {
          var rotPt = eleTxrCache.getRotationPoint(ele);
          sx = rotPt.x;
          sy = rotPt.y;
          context.translate(sx, sy);
          context.rotate(theta);
          smooth = r.getImgSmoothing(context);
          if (!smooth) {
            r.setImgSmoothing(context, true);
          }
          var off = eleTxrCache.getRotationOffset(ele);
          x = off.x;
          y = off.y;
        } else {
          x = x1;
          y = y1;
        }
        var oldGlobalAlpha;
        if (opacity !== 1) {
          oldGlobalAlpha = context.globalAlpha;
          context.globalAlpha = oldGlobalAlpha * opacity;
        }
        context.drawImage(eleCache.texture.canvas, eleCache.x, 0, eleCache.width, eleCache.height, x, y, w, h);
        if (opacity !== 1) {
          context.globalAlpha = oldGlobalAlpha;
        }
        if (theta !== 0) {
          context.rotate(-theta);
          context.translate(-sx, -sy);
          if (!smooth) {
            r.setImgSmoothing(context, false);
          }
        }
      } else {
        eleTxrCache.drawElement(context, ele); // direct draw fallback
      }
    };

    var getZeroRotation = function getZeroRotation() {
      return 0;
    };
    var getLabelRotation = function getLabelRotation(r, ele) {
      return r.getTextAngle(ele, null);
    };
    var getSourceLabelRotation = function getSourceLabelRotation(r, ele) {
      return r.getTextAngle(ele, 'source');
    };
    var getTargetLabelRotation = function getTargetLabelRotation(r, ele) {
      return r.getTextAngle(ele, 'target');
    };
    var getOpacity = function getOpacity(r, ele) {
      return ele.effectiveOpacity();
    };
    var getTextOpacity = function getTextOpacity(e, ele) {
      return ele.pstyle('text-opacity').pfValue * ele.effectiveOpacity();
    };
    CRp$9.drawCachedElement = function (context, ele, pxRatio, extent, lvl, requestHighQuality) {
      var r = this;
      var _r$data = r.data,
        eleTxrCache = _r$data.eleTxrCache,
        lblTxrCache = _r$data.lblTxrCache,
        slbTxrCache = _r$data.slbTxrCache,
        tlbTxrCache = _r$data.tlbTxrCache;
      var bb = ele.boundingBox();
      var reason = requestHighQuality === true ? eleTxrCache.reasons.highQuality : null;
      if (bb.w === 0 || bb.h === 0 || !ele.visible()) {
        return;
      }
      if (!extent || boundingBoxesIntersect(bb, extent)) {
        var isEdge = ele.isEdge();
        var badLine = ele.element()._private.rscratch.badLine;
        r.drawElementUnderlay(context, ele);
        r.drawCachedElementPortion(context, ele, eleTxrCache, pxRatio, lvl, reason, getZeroRotation, getOpacity);
        if (!isEdge || !badLine) {
          r.drawCachedElementPortion(context, ele, lblTxrCache, pxRatio, lvl, reason, getLabelRotation, getTextOpacity);
        }
        if (isEdge && !badLine) {
          r.drawCachedElementPortion(context, ele, slbTxrCache, pxRatio, lvl, reason, getSourceLabelRotation, getTextOpacity);
          r.drawCachedElementPortion(context, ele, tlbTxrCache, pxRatio, lvl, reason, getTargetLabelRotation, getTextOpacity);
        }
        r.drawElementOverlay(context, ele);
      }
    };
    CRp$9.drawElements = function (context, eles) {
      var r = this;
      for (var i = 0; i < eles.length; i++) {
        var ele = eles[i];
        r.drawElement(context, ele);
      }
    };
    CRp$9.drawCachedElements = function (context, eles, pxRatio, extent) {
      var r = this;
      for (var i = 0; i < eles.length; i++) {
        var ele = eles[i];
        r.drawCachedElement(context, ele, pxRatio, extent);
      }
    };
    CRp$9.drawCachedNodes = function (context, eles, pxRatio, extent) {
      var r = this;
      for (var i = 0; i < eles.length; i++) {
        var ele = eles[i];
        if (!ele.isNode()) {
          continue;
        }
        r.drawCachedElement(context, ele, pxRatio, extent);
      }
    };
    CRp$9.drawLayeredElements = function (context, eles, pxRatio, extent) {
      var r = this;
      var layers = r.data.lyrTxrCache.getLayers(eles, pxRatio);
      if (layers) {
        for (var i = 0; i < layers.length; i++) {
          var layer = layers[i];
          var bb = layer.bb;
          if (bb.w === 0 || bb.h === 0) {
            continue;
          }
          context.drawImage(layer.canvas, bb.x1, bb.y1, bb.w, bb.h);
        }
      } else {
        // fall back on plain caching if no layers
        r.drawCachedElements(context, eles, pxRatio, extent);
      }
    };

    var CRp$8 = {};
    CRp$8.drawEdge = function (context, edge, shiftToOriginWithBb) {
      var drawLabel = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : true;
      var shouldDrawOverlay = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : true;
      var shouldDrawOpacity = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : true;
      var r = this;
      var rs = edge._private.rscratch;
      if (shouldDrawOpacity && !edge.visible()) {
        return;
      }

      // if bezier ctrl pts can not be calculated, then die
      if (rs.badLine || rs.allpts == null || isNaN(rs.allpts[0])) {
        // isNaN in case edge is impossible and browser bugs (e.g. safari)
        return;
      }
      var bb;
      if (shiftToOriginWithBb) {
        bb = shiftToOriginWithBb;
        context.translate(-bb.x1, -bb.y1);
      }
      var opacity = shouldDrawOpacity ? edge.pstyle('opacity').value : 1;
      var lineOpacity = shouldDrawOpacity ? edge.pstyle('line-opacity').value : 1;
      var curveStyle = edge.pstyle('curve-style').value;
      var lineStyle = edge.pstyle('line-style').value;
      var edgeWidth = edge.pstyle('width').pfValue;
      var lineCap = edge.pstyle('line-cap').value;
      var effectiveLineOpacity = opacity * lineOpacity;
      // separate arrow opacity would require arrow-opacity property
      var effectiveArrowOpacity = opacity * lineOpacity;
      var drawLine = function drawLine() {
        var strokeOpacity = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : effectiveLineOpacity;
        if (curveStyle === 'straight-triangle') {
          r.eleStrokeStyle(context, edge, strokeOpacity);
          r.drawEdgeTrianglePath(edge, context, rs.allpts);
        } else {
          context.lineWidth = edgeWidth;
          context.lineCap = lineCap;
          r.eleStrokeStyle(context, edge, strokeOpacity);
          r.drawEdgePath(edge, context, rs.allpts, lineStyle);
          context.lineCap = 'butt'; // reset for other drawing functions
        }
      };

      var drawOverlay = function drawOverlay() {
        if (!shouldDrawOverlay) {
          return;
        }
        r.drawEdgeOverlay(context, edge);
      };
      var drawUnderlay = function drawUnderlay() {
        if (!shouldDrawOverlay) {
          return;
        }
        r.drawEdgeUnderlay(context, edge);
      };
      var drawArrows = function drawArrows() {
        var arrowOpacity = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : effectiveArrowOpacity;
        r.drawArrowheads(context, edge, arrowOpacity);
      };
      var drawText = function drawText() {
        r.drawElementText(context, edge, null, drawLabel);
      };
      context.lineJoin = 'round';
      var ghost = edge.pstyle('ghost').value === 'yes';
      if (ghost) {
        var gx = edge.pstyle('ghost-offset-x').pfValue;
        var gy = edge.pstyle('ghost-offset-y').pfValue;
        var ghostOpacity = edge.pstyle('ghost-opacity').value;
        var effectiveGhostOpacity = effectiveLineOpacity * ghostOpacity;
        context.translate(gx, gy);
        drawLine(effectiveGhostOpacity);
        drawArrows(effectiveGhostOpacity);
        context.translate(-gx, -gy);
      }
      drawUnderlay();
      drawLine();
      drawArrows();
      drawOverlay();
      drawText();
      if (shiftToOriginWithBb) {
        context.translate(bb.x1, bb.y1);
      }
    };
    var drawEdgeOverlayUnderlay = function drawEdgeOverlayUnderlay(overlayOrUnderlay) {
      if (!['overlay', 'underlay'].includes(overlayOrUnderlay)) {
        throw new Error('Invalid state');
      }
      return function (context, edge) {
        if (!edge.visible()) {
          return;
        }
        var opacity = edge.pstyle("".concat(overlayOrUnderlay, "-opacity")).value;
        if (opacity === 0) {
          return;
        }
        var r = this;
        var usePaths = r.usePaths();
        var rs = edge._private.rscratch;
        var padding = edge.pstyle("".concat(overlayOrUnderlay, "-padding")).pfValue;
        var width = 2 * padding;
        var color = edge.pstyle("".concat(overlayOrUnderlay, "-color")).value;
        context.lineWidth = width;
        if (rs.edgeType === 'self' && !usePaths) {
          context.lineCap = 'butt';
        } else {
          context.lineCap = 'round';
        }
        r.colorStrokeStyle(context, color[0], color[1], color[2], opacity);
        r.drawEdgePath(edge, context, rs.allpts, 'solid');
      };
    };
    CRp$8.drawEdgeOverlay = drawEdgeOverlayUnderlay('overlay');
    CRp$8.drawEdgeUnderlay = drawEdgeOverlayUnderlay('underlay');
    CRp$8.drawEdgePath = function (edge, context, pts, type) {
      var rs = edge._private.rscratch;
      var canvasCxt = context;
      var path;
      var pathCacheHit = false;
      var usePaths = this.usePaths();
      var lineDashPattern = edge.pstyle('line-dash-pattern').pfValue;
      var lineDashOffset = edge.pstyle('line-dash-offset').pfValue;
      if (usePaths) {
        var pathCacheKey = pts.join('$');
        var keyMatches = rs.pathCacheKey && rs.pathCacheKey === pathCacheKey;
        if (keyMatches) {
          path = context = rs.pathCache;
          pathCacheHit = true;
        } else {
          path = context = new Path2D();
          rs.pathCacheKey = pathCacheKey;
          rs.pathCache = path;
        }
      }
      if (canvasCxt.setLineDash) {
        // for very outofdate browsers
        switch (type) {
          case 'dotted':
            canvasCxt.setLineDash([1, 1]);
            break;
          case 'dashed':
            canvasCxt.setLineDash(lineDashPattern);
            canvasCxt.lineDashOffset = lineDashOffset;
            break;
          case 'solid':
            canvasCxt.setLineDash([]);
            break;
        }
      }
      if (!pathCacheHit && !rs.badLine) {
        if (context.beginPath) {
          context.beginPath();
        }
        context.moveTo(pts[0], pts[1]);
        switch (rs.edgeType) {
          case 'bezier':
          case 'self':
          case 'compound':
          case 'multibezier':
            for (var i = 2; i + 3 < pts.length; i += 4) {
              context.quadraticCurveTo(pts[i], pts[i + 1], pts[i + 2], pts[i + 3]);
            }
            break;
          case 'straight':
          case 'haystack':
            for (var _i = 2; _i + 1 < pts.length; _i += 2) {
              context.lineTo(pts[_i], pts[_i + 1]);
            }
            break;
          case 'segments':
            if (rs.isRound) {
              var _iterator = _createForOfIteratorHelper(rs.roundCorners),
                _step;
              try {
                for (_iterator.s(); !(_step = _iterator.n()).done;) {
                  var corner = _step.value;
                  drawPreparedRoundCorner(context, corner);
                }
              } catch (err) {
                _iterator.e(err);
              } finally {
                _iterator.f();
              }
              context.lineTo(pts[pts.length - 2], pts[pts.length - 1]);
            } else {
              for (var _i2 = 2; _i2 + 1 < pts.length; _i2 += 2) {
                context.lineTo(pts[_i2], pts[_i2 + 1]);
              }
            }
            break;
        }
      }
      context = canvasCxt;
      if (usePaths) {
        context.stroke(path);
      } else {
        context.stroke();
      }

      // reset any line dashes
      if (context.setLineDash) {
        // for very outofdate browsers
        context.setLineDash([]);
      }
    };
    CRp$8.drawEdgeTrianglePath = function (edge, context, pts) {
      // use line stroke style for triangle fill style
      context.fillStyle = context.strokeStyle;
      var edgeWidth = edge.pstyle('width').pfValue;
      for (var i = 0; i + 1 < pts.length; i += 2) {
        var vector = [pts[i + 2] - pts[i], pts[i + 3] - pts[i + 1]];
        var length = Math.sqrt(vector[0] * vector[0] + vector[1] * vector[1]);
        var normal = [vector[1] / length, -vector[0] / length];
        var triangleHead = [normal[0] * edgeWidth / 2, normal[1] * edgeWidth / 2];
        context.beginPath();
        context.moveTo(pts[i] - triangleHead[0], pts[i + 1] - triangleHead[1]);
        context.lineTo(pts[i] + triangleHead[0], pts[i + 1] + triangleHead[1]);
        context.lineTo(pts[i + 2], pts[i + 3]);
        context.closePath();
        context.fill();
      }
    };
    CRp$8.drawArrowheads = function (context, edge, opacity) {
      var rs = edge._private.rscratch;
      var isHaystack = rs.edgeType === 'haystack';
      if (!isHaystack) {
        this.drawArrowhead(context, edge, 'source', rs.arrowStartX, rs.arrowStartY, rs.srcArrowAngle, opacity);
      }
      this.drawArrowhead(context, edge, 'mid-target', rs.midX, rs.midY, rs.midtgtArrowAngle, opacity);
      this.drawArrowhead(context, edge, 'mid-source', rs.midX, rs.midY, rs.midsrcArrowAngle, opacity);
      if (!isHaystack) {
        this.drawArrowhead(context, edge, 'target', rs.arrowEndX, rs.arrowEndY, rs.tgtArrowAngle, opacity);
      }
    };
    CRp$8.drawArrowhead = function (context, edge, prefix, x, y, angle, opacity) {
      if (isNaN(x) || x == null || isNaN(y) || y == null || isNaN(angle) || angle == null) {
        return;
      }
      var self = this;
      var arrowShape = edge.pstyle(prefix + '-arrow-shape').value;
      if (arrowShape === 'none') {
        return;
      }
      var arrowClearFill = edge.pstyle(prefix + '-arrow-fill').value === 'hollow' ? 'both' : 'filled';
      var arrowFill = edge.pstyle(prefix + '-arrow-fill').value;
      var edgeWidth = edge.pstyle('width').pfValue;
      var pArrowWidth = edge.pstyle(prefix + '-arrow-width');
      var arrowWidth = pArrowWidth.value === 'match-line' ? edgeWidth : pArrowWidth.pfValue;
      if (pArrowWidth.units === '%') arrowWidth *= edgeWidth;
      var edgeOpacity = edge.pstyle('opacity').value;
      if (opacity === undefined) {
        opacity = edgeOpacity;
      }
      var gco = context.globalCompositeOperation;
      if (opacity !== 1 || arrowFill === 'hollow') {
        // then extra clear is needed
        context.globalCompositeOperation = 'destination-out';
        self.colorFillStyle(context, 255, 255, 255, 1);
        self.colorStrokeStyle(context, 255, 255, 255, 1);
        self.drawArrowShape(edge, context, arrowClearFill, edgeWidth, arrowShape, arrowWidth, x, y, angle);
        context.globalCompositeOperation = gco;
      } // otherwise, the opaque arrow clears it for free :)

      var color = edge.pstyle(prefix + '-arrow-color').value;
      self.colorFillStyle(context, color[0], color[1], color[2], opacity);
      self.colorStrokeStyle(context, color[0], color[1], color[2], opacity);
      self.drawArrowShape(edge, context, arrowFill, edgeWidth, arrowShape, arrowWidth, x, y, angle);
    };
    CRp$8.drawArrowShape = function (edge, context, fill, edgeWidth, shape, shapeWidth, x, y, angle) {
      var r = this;
      var usePaths = this.usePaths() && shape !== 'triangle-cross';
      var pathCacheHit = false;
      var path;
      var canvasContext = context;
      var translation = {
        x: x,
        y: y
      };
      var scale = edge.pstyle('arrow-scale').value;
      var size = this.getArrowWidth(edgeWidth, scale);
      var shapeImpl = r.arrowShapes[shape];
      if (usePaths) {
        var cache = r.arrowPathCache = r.arrowPathCache || [];
        var key = hashString(shape);
        var cachedPath = cache[key];
        if (cachedPath != null) {
          path = context = cachedPath;
          pathCacheHit = true;
        } else {
          path = context = new Path2D();
          cache[key] = path;
        }
      }
      if (!pathCacheHit) {
        if (context.beginPath) {
          context.beginPath();
        }
        if (usePaths) {
          // store in the path cache with values easily manipulated later
          shapeImpl.draw(context, 1, 0, {
            x: 0,
            y: 0
          }, 1);
        } else {
          shapeImpl.draw(context, size, angle, translation, edgeWidth);
        }
        if (context.closePath) {
          context.closePath();
        }
      }
      context = canvasContext;
      if (usePaths) {
        // set transform to arrow position/orientation
        context.translate(x, y);
        context.rotate(angle);
        context.scale(size, size);
      }
      if (fill === 'filled' || fill === 'both') {
        if (usePaths) {
          context.fill(path);
        } else {
          context.fill();
        }
      }
      if (fill === 'hollow' || fill === 'both') {
        context.lineWidth = shapeWidth / (usePaths ? size : 1);
        context.lineJoin = 'miter';
        if (usePaths) {
          context.stroke(path);
        } else {
          context.stroke();
        }
      }
      if (usePaths) {
        // reset transform by applying inverse
        context.scale(1 / size, 1 / size);
        context.rotate(-angle);
        context.translate(-x, -y);
      }
    };

    var CRp$7 = {};
    CRp$7.safeDrawImage = function (context, img, ix, iy, iw, ih, x, y, w, h) {
      // detect problematic cases for old browsers with bad images (cheaper than try-catch)
      if (iw <= 0 || ih <= 0 || w <= 0 || h <= 0) {
        return;
      }
      try {
        context.drawImage(img, ix, iy, iw, ih, x, y, w, h);
      } catch (e) {
        warn(e);
      }
    };
    CRp$7.drawInscribedImage = function (context, img, node, index, nodeOpacity) {
      var r = this;
      var pos = node.position();
      var nodeX = pos.x;
      var nodeY = pos.y;
      var styleObj = node.cy().style();
      var getIndexedStyle = styleObj.getIndexedStyle.bind(styleObj);
      var fit = getIndexedStyle(node, 'background-fit', 'value', index);
      var repeat = getIndexedStyle(node, 'background-repeat', 'value', index);
      var nodeW = node.width();
      var nodeH = node.height();
      var paddingX2 = node.padding() * 2;
      var nodeTW = nodeW + (getIndexedStyle(node, 'background-width-relative-to', 'value', index) === 'inner' ? 0 : paddingX2);
      var nodeTH = nodeH + (getIndexedStyle(node, 'background-height-relative-to', 'value', index) === 'inner' ? 0 : paddingX2);
      var rs = node._private.rscratch;
      var clip = getIndexedStyle(node, 'background-clip', 'value', index);
      var shouldClip = clip === 'node';
      var imgOpacity = getIndexedStyle(node, 'background-image-opacity', 'value', index) * nodeOpacity;
      var smooth = getIndexedStyle(node, 'background-image-smoothing', 'value', index);
      var cornerRadius = node.pstyle('corner-radius').value;
      if (cornerRadius !== 'auto') cornerRadius = node.pstyle('corner-radius').pfValue;
      var imgW = img.width || img.cachedW;
      var imgH = img.height || img.cachedH;

      // workaround for broken browsers like ie
      if (null == imgW || null == imgH) {
        document.body.appendChild(img); // eslint-disable-line no-undef

        imgW = img.cachedW = img.width || img.offsetWidth;
        imgH = img.cachedH = img.height || img.offsetHeight;
        document.body.removeChild(img); // eslint-disable-line no-undef
      }

      var w = imgW;
      var h = imgH;
      if (getIndexedStyle(node, 'background-width', 'value', index) !== 'auto') {
        if (getIndexedStyle(node, 'background-width', 'units', index) === '%') {
          w = getIndexedStyle(node, 'background-width', 'pfValue', index) * nodeTW;
        } else {
          w = getIndexedStyle(node, 'background-width', 'pfValue', index);
        }
      }
      if (getIndexedStyle(node, 'background-height', 'value', index) !== 'auto') {
        if (getIndexedStyle(node, 'background-height', 'units', index) === '%') {
          h = getIndexedStyle(node, 'background-height', 'pfValue', index) * nodeTH;
        } else {
          h = getIndexedStyle(node, 'background-height', 'pfValue', index);
        }
      }
      if (w === 0 || h === 0) {
        return; // no point in drawing empty image (and chrome is broken in this case)
      }

      if (fit === 'contain') {
        var scale = Math.min(nodeTW / w, nodeTH / h);
        w *= scale;
        h *= scale;
      } else if (fit === 'cover') {
        var scale = Math.max(nodeTW / w, nodeTH / h);
        w *= scale;
        h *= scale;
      }
      var x = nodeX - nodeTW / 2; // left
      var posXUnits = getIndexedStyle(node, 'background-position-x', 'units', index);
      var posXPfVal = getIndexedStyle(node, 'background-position-x', 'pfValue', index);
      if (posXUnits === '%') {
        x += (nodeTW - w) * posXPfVal;
      } else {
        x += posXPfVal;
      }
      var offXUnits = getIndexedStyle(node, 'background-offset-x', 'units', index);
      var offXPfVal = getIndexedStyle(node, 'background-offset-x', 'pfValue', index);
      if (offXUnits === '%') {
        x += (nodeTW - w) * offXPfVal;
      } else {
        x += offXPfVal;
      }
      var y = nodeY - nodeTH / 2; // top
      var posYUnits = getIndexedStyle(node, 'background-position-y', 'units', index);
      var posYPfVal = getIndexedStyle(node, 'background-position-y', 'pfValue', index);
      if (posYUnits === '%') {
        y += (nodeTH - h) * posYPfVal;
      } else {
        y += posYPfVal;
      }
      var offYUnits = getIndexedStyle(node, 'background-offset-y', 'units', index);
      var offYPfVal = getIndexedStyle(node, 'background-offset-y', 'pfValue', index);
      if (offYUnits === '%') {
        y += (nodeTH - h) * offYPfVal;
      } else {
        y += offYPfVal;
      }
      if (rs.pathCache) {
        x -= nodeX;
        y -= nodeY;
        nodeX = 0;
        nodeY = 0;
      }
      var gAlpha = context.globalAlpha;
      context.globalAlpha = imgOpacity;
      var smoothingEnabled = r.getImgSmoothing(context);
      var isSmoothingSwitched = false;
      if (smooth === 'no' && smoothingEnabled) {
        r.setImgSmoothing(context, false);
        isSmoothingSwitched = true;
      } else if (smooth === 'yes' && !smoothingEnabled) {
        r.setImgSmoothing(context, true);
        isSmoothingSwitched = true;
      }
      if (repeat === 'no-repeat') {
        if (shouldClip) {
          context.save();
          if (rs.pathCache) {
            context.clip(rs.pathCache);
          } else {
            r.nodeShapes[r.getNodeShape(node)].draw(context, nodeX, nodeY, nodeTW, nodeTH, cornerRadius, rs);
            context.clip();
          }
        }
        r.safeDrawImage(context, img, 0, 0, imgW, imgH, x, y, w, h);
        if (shouldClip) {
          context.restore();
        }
      } else {
        var pattern = context.createPattern(img, repeat);
        context.fillStyle = pattern;
        r.nodeShapes[r.getNodeShape(node)].draw(context, nodeX, nodeY, nodeTW, nodeTH, cornerRadius, rs);
        context.translate(x, y);
        context.fill();
        context.translate(-x, -y);
      }
      context.globalAlpha = gAlpha;
      if (isSmoothingSwitched) {
        r.setImgSmoothing(context, smoothingEnabled);
      }
    };

    var CRp$6 = {};
    CRp$6.eleTextBiggerThanMin = function (ele, scale) {
      if (!scale) {
        var zoom = ele.cy().zoom();
        var pxRatio = this.getPixelRatio();
        var lvl = Math.ceil(log2(zoom * pxRatio)); // the effective texture level

        scale = Math.pow(2, lvl);
      }
      var computedSize = ele.pstyle('font-size').pfValue * scale;
      var minSize = ele.pstyle('min-zoomed-font-size').pfValue;
      if (computedSize < minSize) {
        return false;
      }
      return true;
    };
    CRp$6.drawElementText = function (context, ele, shiftToOriginWithBb, force, prefix) {
      var useEleOpacity = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : true;
      var r = this;
      if (force == null) {
        if (useEleOpacity && !r.eleTextBiggerThanMin(ele)) {
          return;
        }
      } else if (force === false) {
        return;
      }
      if (ele.isNode()) {
        var label = ele.pstyle('label');
        if (!label || !label.value) {
          return;
        }
        var justification = r.getLabelJustification(ele);
        context.textAlign = justification;
        context.textBaseline = 'bottom';
      } else {
        var badLine = ele.element()._private.rscratch.badLine;
        var _label = ele.pstyle('label');
        var srcLabel = ele.pstyle('source-label');
        var tgtLabel = ele.pstyle('target-label');
        if (badLine || (!_label || !_label.value) && (!srcLabel || !srcLabel.value) && (!tgtLabel || !tgtLabel.value)) {
          return;
        }
        context.textAlign = 'center';
        context.textBaseline = 'bottom';
      }
      var applyRotation = !shiftToOriginWithBb;
      var bb;
      if (shiftToOriginWithBb) {
        bb = shiftToOriginWithBb;
        context.translate(-bb.x1, -bb.y1);
      }
      if (prefix == null) {
        r.drawText(context, ele, null, applyRotation, useEleOpacity);
        if (ele.isEdge()) {
          r.drawText(context, ele, 'source', applyRotation, useEleOpacity);
          r.drawText(context, ele, 'target', applyRotation, useEleOpacity);
        }
      } else {
        r.drawText(context, ele, prefix, applyRotation, useEleOpacity);
      }
      if (shiftToOriginWithBb) {
        context.translate(bb.x1, bb.y1);
      }
    };
    CRp$6.getFontCache = function (context) {
      var cache;
      this.fontCaches = this.fontCaches || [];
      for (var i = 0; i < this.fontCaches.length; i++) {
        cache = this.fontCaches[i];
        if (cache.context === context) {
          return cache;
        }
      }
      cache = {
        context: context
      };
      this.fontCaches.push(cache);
      return cache;
    };

    // set up canvas context with font
    // returns transformed text string
    CRp$6.setupTextStyle = function (context, ele) {
      var useEleOpacity = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;
      // Font style
      var labelStyle = ele.pstyle('font-style').strValue;
      var labelSize = ele.pstyle('font-size').pfValue + 'px';
      var labelFamily = ele.pstyle('font-family').strValue;
      var labelWeight = ele.pstyle('font-weight').strValue;
      var opacity = useEleOpacity ? ele.effectiveOpacity() * ele.pstyle('text-opacity').value : 1;
      var outlineOpacity = ele.pstyle('text-outline-opacity').value * opacity;
      var color = ele.pstyle('color').value;
      var outlineColor = ele.pstyle('text-outline-color').value;
      context.font = labelStyle + ' ' + labelWeight + ' ' + labelSize + ' ' + labelFamily;
      context.lineJoin = 'round'; // so text outlines aren't jagged

      this.colorFillStyle(context, color[0], color[1], color[2], opacity);
      this.colorStrokeStyle(context, outlineColor[0], outlineColor[1], outlineColor[2], outlineOpacity);
    };

    // TODO ensure re-used
    function roundRect(ctx, x, y, width, height) {
      var radius = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 5;
      var stroke = arguments.length > 6 ? arguments[6] : undefined;
      ctx.beginPath();
      ctx.moveTo(x + radius, y);
      ctx.lineTo(x + width - radius, y);
      ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
      ctx.lineTo(x + width, y + height - radius);
      ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
      ctx.lineTo(x + radius, y + height);
      ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
      ctx.lineTo(x, y + radius);
      ctx.quadraticCurveTo(x, y, x + radius, y);
      ctx.closePath();
      if (stroke) ctx.stroke();else ctx.fill();
    }
    CRp$6.getTextAngle = function (ele, prefix) {
      var theta;
      var _p = ele._private;
      var rscratch = _p.rscratch;
      var pdash = prefix ? prefix + '-' : '';
      var rotation = ele.pstyle(pdash + 'text-rotation');
      var textAngle = getPrefixedProperty(rscratch, 'labelAngle', prefix);
      if (rotation.strValue === 'autorotate') {
        theta = ele.isEdge() ? textAngle : 0;
      } else if (rotation.strValue === 'none') {
        theta = 0;
      } else {
        theta = rotation.pfValue;
      }
      return theta;
    };
    CRp$6.drawText = function (context, ele, prefix) {
      var applyRotation = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : true;
      var useEleOpacity = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : true;
      var _p = ele._private;
      var rscratch = _p.rscratch;
      var parentOpacity = useEleOpacity ? ele.effectiveOpacity() : 1;
      if (useEleOpacity && (parentOpacity === 0 || ele.pstyle('text-opacity').value === 0)) {
        return;
      }

      // use 'main' as an alias for the main label (i.e. null prefix)
      if (prefix === 'main') {
        prefix = null;
      }
      var textX = getPrefixedProperty(rscratch, 'labelX', prefix);
      var textY = getPrefixedProperty(rscratch, 'labelY', prefix);
      var orgTextX, orgTextY; // used for rotation
      var text = this.getLabelText(ele, prefix);
      if (text != null && text !== '' && !isNaN(textX) && !isNaN(textY)) {
        this.setupTextStyle(context, ele, useEleOpacity);
        var pdash = prefix ? prefix + '-' : '';
        var textW = getPrefixedProperty(rscratch, 'labelWidth', prefix);
        var textH = getPrefixedProperty(rscratch, 'labelHeight', prefix);
        var marginX = ele.pstyle(pdash + 'text-margin-x').pfValue;
        var marginY = ele.pstyle(pdash + 'text-margin-y').pfValue;
        var isEdge = ele.isEdge();
        var halign = ele.pstyle('text-halign').value;
        var valign = ele.pstyle('text-valign').value;
        if (isEdge) {
          halign = 'center';
          valign = 'center';
        }
        textX += marginX;
        textY += marginY;
        var theta;
        if (!applyRotation) {
          theta = 0;
        } else {
          theta = this.getTextAngle(ele, prefix);
        }
        if (theta !== 0) {
          orgTextX = textX;
          orgTextY = textY;
          context.translate(orgTextX, orgTextY);
          context.rotate(theta);
          textX = 0;
          textY = 0;
        }
        switch (valign) {
          case 'top':
            break;
          case 'center':
            textY += textH / 2;
            break;
          case 'bottom':
            textY += textH;
            break;
        }
        var backgroundOpacity = ele.pstyle('text-background-opacity').value;
        var borderOpacity = ele.pstyle('text-border-opacity').value;
        var textBorderWidth = ele.pstyle('text-border-width').pfValue;
        var backgroundPadding = ele.pstyle('text-background-padding').pfValue;
        var styleShape = ele.pstyle('text-background-shape').strValue;
        var rounded = styleShape.indexOf('round') === 0;
        var roundRadius = 2;
        if (backgroundOpacity > 0 || textBorderWidth > 0 && borderOpacity > 0) {
          var bgX = textX - backgroundPadding;
          switch (halign) {
            case 'left':
              bgX -= textW;
              break;
            case 'center':
              bgX -= textW / 2;
              break;
          }
          var bgY = textY - textH - backgroundPadding;
          var bgW = textW + 2 * backgroundPadding;
          var bgH = textH + 2 * backgroundPadding;
          if (backgroundOpacity > 0) {
            var textFill = context.fillStyle;
            var textBackgroundColor = ele.pstyle('text-background-color').value;
            context.fillStyle = 'rgba(' + textBackgroundColor[0] + ',' + textBackgroundColor[1] + ',' + textBackgroundColor[2] + ',' + backgroundOpacity * parentOpacity + ')';
            if (rounded) {
              roundRect(context, bgX, bgY, bgW, bgH, roundRadius);
            } else {
              context.fillRect(bgX, bgY, bgW, bgH);
            }
            context.fillStyle = textFill;
          }
          if (textBorderWidth > 0 && borderOpacity > 0) {
            var textStroke = context.strokeStyle;
            var textLineWidth = context.lineWidth;
            var textBorderColor = ele.pstyle('text-border-color').value;
            var textBorderStyle = ele.pstyle('text-border-style').value;
            context.strokeStyle = 'rgba(' + textBorderColor[0] + ',' + textBorderColor[1] + ',' + textBorderColor[2] + ',' + borderOpacity * parentOpacity + ')';
            context.lineWidth = textBorderWidth;
            if (context.setLineDash) {
              // for very outofdate browsers
              switch (textBorderStyle) {
                case 'dotted':
                  context.setLineDash([1, 1]);
                  break;
                case 'dashed':
                  context.setLineDash([4, 2]);
                  break;
                case 'double':
                  context.lineWidth = textBorderWidth / 4; // 50% reserved for white between the two borders
                  context.setLineDash([]);
                  break;
                case 'solid':
                  context.setLineDash([]);
                  break;
              }
            }
            if (rounded) {
              roundRect(context, bgX, bgY, bgW, bgH, roundRadius, 'stroke');
            } else {
              context.strokeRect(bgX, bgY, bgW, bgH);
            }
            if (textBorderStyle === 'double') {
              var whiteWidth = textBorderWidth / 2;
              if (rounded) {
                roundRect(context, bgX + whiteWidth, bgY + whiteWidth, bgW - whiteWidth * 2, bgH - whiteWidth * 2, roundRadius, 'stroke');
              } else {
                context.strokeRect(bgX + whiteWidth, bgY + whiteWidth, bgW - whiteWidth * 2, bgH - whiteWidth * 2);
              }
            }
            if (context.setLineDash) {
              // for very outofdate browsers
              context.setLineDash([]);
            }
            context.lineWidth = textLineWidth;
            context.strokeStyle = textStroke;
          }
        }
        var lineWidth = 2 * ele.pstyle('text-outline-width').pfValue; // *2 b/c the stroke is drawn centred on the middle

        if (lineWidth > 0) {
          context.lineWidth = lineWidth;
        }
        if (ele.pstyle('text-wrap').value === 'wrap') {
          var lines = getPrefixedProperty(rscratch, 'labelWrapCachedLines', prefix);
          var lineHeight = getPrefixedProperty(rscratch, 'labelLineHeight', prefix);
          var halfTextW = textW / 2;
          var justification = this.getLabelJustification(ele);
          if (justification === 'auto') ; else if (halign === 'left') {
            // auto justification : right
            if (justification === 'left') {
              textX += -textW;
            } else if (justification === 'center') {
              textX += -halfTextW;
            } // else same as auto
          } else if (halign === 'center') {
            // auto justfication : center
            if (justification === 'left') {
              textX += -halfTextW;
            } else if (justification === 'right') {
              textX += halfTextW;
            } // else same as auto
          } else if (halign === 'right') {
            // auto justification : left
            if (justification === 'center') {
              textX += halfTextW;
            } else if (justification === 'right') {
              textX += textW;
            } // else same as auto
          }

          switch (valign) {
            case 'top':
              textY -= (lines.length - 1) * lineHeight;
              break;
            case 'center':
            case 'bottom':
              textY -= (lines.length - 1) * lineHeight;
              break;
          }
          for (var l = 0; l < lines.length; l++) {
            if (lineWidth > 0) {
              context.strokeText(lines[l], textX, textY);
            }
            context.fillText(lines[l], textX, textY);
            textY += lineHeight;
          }
        } else {
          if (lineWidth > 0) {
            context.strokeText(text, textX, textY);
          }
          context.fillText(text, textX, textY);
        }
        if (theta !== 0) {
          context.rotate(-theta);
          context.translate(-orgTextX, -orgTextY);
        }
      }
    };

    /* global Path2D */
    var CRp$5 = {};
    CRp$5.drawNode = function (context, node, shiftToOriginWithBb) {
      var drawLabel = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : true;
      var shouldDrawOverlay = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : true;
      var shouldDrawOpacity = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : true;
      var r = this;
      var nodeWidth, nodeHeight;
      var _p = node._private;
      var rs = _p.rscratch;
      var pos = node.position();
      if (!number$1(pos.x) || !number$1(pos.y)) {
        return; // can't draw node with undefined position
      }

      if (shouldDrawOpacity && !node.visible()) {
        return;
      }
      var eleOpacity = shouldDrawOpacity ? node.effectiveOpacity() : 1;
      var usePaths = r.usePaths();
      var path;
      var pathCacheHit = false;
      var padding = node.padding();
      nodeWidth = node.width() + 2 * padding;
      nodeHeight = node.height() + 2 * padding;

      //
      // setup shift

      var bb;
      if (shiftToOriginWithBb) {
        bb = shiftToOriginWithBb;
        context.translate(-bb.x1, -bb.y1);
      }

      //
      // load bg image

      var bgImgProp = node.pstyle('background-image');
      var urls = bgImgProp.value;
      var urlDefined = new Array(urls.length);
      var image = new Array(urls.length);
      var numImages = 0;
      for (var i = 0; i < urls.length; i++) {
        var url = urls[i];
        var defd = urlDefined[i] = url != null && url !== 'none';
        if (defd) {
          var bgImgCrossOrigin = node.cy().style().getIndexedStyle(node, 'background-image-crossorigin', 'value', i);
          numImages++;

          // get image, and if not loaded then ask to redraw when later loaded
          image[i] = r.getCachedImage(url, bgImgCrossOrigin, function () {
            _p.backgroundTimestamp = Date.now();
            node.emitAndNotify('background');
          });
        }
      }

      //
      // setup styles

      var darkness = node.pstyle('background-blacken').value;
      var borderWidth = node.pstyle('border-width').pfValue;
      var bgOpacity = node.pstyle('background-opacity').value * eleOpacity;
      var borderColor = node.pstyle('border-color').value;
      var borderStyle = node.pstyle('border-style').value;
      var borderJoin = node.pstyle('border-join').value;
      var borderCap = node.pstyle('border-cap').value;
      var borderPosition = node.pstyle('border-position').value;
      var borderPattern = node.pstyle('border-dash-pattern').pfValue;
      var borderOffset = node.pstyle('border-dash-offset').pfValue;
      var borderOpacity = node.pstyle('border-opacity').value * eleOpacity;
      var outlineWidth = node.pstyle('outline-width').pfValue;
      var outlineColor = node.pstyle('outline-color').value;
      var outlineStyle = node.pstyle('outline-style').value;
      var outlineOpacity = node.pstyle('outline-opacity').value * eleOpacity;
      var outlineOffset = node.pstyle('outline-offset').value;
      var cornerRadius = node.pstyle('corner-radius').value;
      if (cornerRadius !== 'auto') cornerRadius = node.pstyle('corner-radius').pfValue;
      var setupShapeColor = function setupShapeColor() {
        var bgOpy = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : bgOpacity;
        r.eleFillStyle(context, node, bgOpy);
      };
      var setupBorderColor = function setupBorderColor() {
        var bdrOpy = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : borderOpacity;
        r.colorStrokeStyle(context, borderColor[0], borderColor[1], borderColor[2], bdrOpy);
      };
      var setupOutlineColor = function setupOutlineColor() {
        var otlnOpy = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : outlineOpacity;
        r.colorStrokeStyle(context, outlineColor[0], outlineColor[1], outlineColor[2], otlnOpy);
      };

      //
      // setup shape

      var getPath = function getPath(width, height, shape, points) {
        var pathCache = r.nodePathCache = r.nodePathCache || [];
        var key = hashStrings(shape === 'polygon' ? shape + ',' + points.join(',') : shape, '' + height, '' + width, '' + cornerRadius);
        var cachedPath = pathCache[key];
        var path;
        var cacheHit = false;
        if (cachedPath != null) {
          path = cachedPath;
          cacheHit = true;
          rs.pathCache = path;
        } else {
          path = new Path2D();
          pathCache[key] = rs.pathCache = path;
        }
        return {
          path: path,
          cacheHit: cacheHit
        };
      };
      var styleShape = node.pstyle('shape').strValue;
      var shapePts = node.pstyle('shape-polygon-points').pfValue;
      if (usePaths) {
        context.translate(pos.x, pos.y);
        var shapePath = getPath(nodeWidth, nodeHeight, styleShape, shapePts);
        path = shapePath.path;
        pathCacheHit = shapePath.cacheHit;
      }
      var drawShape = function drawShape() {
        if (!pathCacheHit) {
          var npos = pos;
          if (usePaths) {
            npos = {
              x: 0,
              y: 0
            };
          }
          r.nodeShapes[r.getNodeShape(node)].draw(path || context, npos.x, npos.y, nodeWidth, nodeHeight, cornerRadius, rs);
        }
        if (usePaths) {
          context.fill(path);
        } else {
          context.fill();
        }
      };
      var drawImages = function drawImages() {
        var nodeOpacity = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : eleOpacity;
        var inside = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
        var prevBging = _p.backgrounding;
        var totalCompleted = 0;
        for (var _i = 0; _i < image.length; _i++) {
          var bgContainment = node.cy().style().getIndexedStyle(node, 'background-image-containment', 'value', _i);
          if (inside && bgContainment === 'over' || !inside && bgContainment === 'inside') {
            totalCompleted++;
            continue;
          }
          if (urlDefined[_i] && image[_i].complete && !image[_i].error) {
            totalCompleted++;
            r.drawInscribedImage(context, image[_i], node, _i, nodeOpacity);
          }
        }
        _p.backgrounding = !(totalCompleted === numImages);
        if (prevBging !== _p.backgrounding) {
          // update style b/c :backgrounding state changed
          node.updateStyle(false);
        }
      };
      var drawPie = function drawPie() {
        var redrawShape = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
        var pieOpacity = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : eleOpacity;
        if (r.hasPie(node)) {
          r.drawPie(context, node, pieOpacity);

          // redraw/restore path if steps after pie need it
          if (redrawShape) {
            if (!usePaths) {
              r.nodeShapes[r.getNodeShape(node)].draw(context, pos.x, pos.y, nodeWidth, nodeHeight, cornerRadius, rs);
            }
          }
        }
      };
      var darken = function darken() {
        var darkenOpacity = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : eleOpacity;
        var opacity = (darkness > 0 ? darkness : -darkness) * darkenOpacity;
        var c = darkness > 0 ? 0 : 255;
        if (darkness !== 0) {
          r.colorFillStyle(context, c, c, c, opacity);
          if (usePaths) {
            context.fill(path);
          } else {
            context.fill();
          }
        }
      };
      var drawBorder = function drawBorder() {
        if (borderWidth > 0) {
          context.lineWidth = borderWidth;
          context.lineCap = borderCap;
          context.lineJoin = borderJoin;
          if (context.setLineDash) {
            // for very outofdate browsers
            switch (borderStyle) {
              case 'dotted':
                context.setLineDash([1, 1]);
                break;
              case 'dashed':
                context.setLineDash(borderPattern);
                context.lineDashOffset = borderOffset;
                break;
              case 'solid':
              case 'double':
                context.setLineDash([]);
                break;
            }
          }
          if (borderPosition !== 'center') {
            context.save();
            context.lineWidth *= 2;
            if (borderPosition === 'inside') {
              usePaths ? context.clip(path) : context.clip();
            } else {
              var region = new Path2D();
              region.rect(-nodeWidth / 2 - borderWidth, -nodeHeight / 2 - borderWidth, nodeWidth + 2 * borderWidth, nodeHeight + 2 * borderWidth);
              region.addPath(path);
              context.clip(region, 'evenodd');
            }
            usePaths ? context.stroke(path) : context.stroke();
            context.restore();
          } else {
            usePaths ? context.stroke(path) : context.stroke();
          }
          if (borderStyle === 'double') {
            context.lineWidth = borderWidth / 3;
            var gco = context.globalCompositeOperation;
            context.globalCompositeOperation = 'destination-out';
            if (usePaths) {
              context.stroke(path);
            } else {
              context.stroke();
            }
            context.globalCompositeOperation = gco;
          }

          // reset in case we changed the border style
          if (context.setLineDash) {
            // for very outofdate browsers
            context.setLineDash([]);
          }
        }
      };
      var drawOutline = function drawOutline() {
        if (outlineWidth > 0) {
          context.lineWidth = outlineWidth;
          context.lineCap = 'butt';
          if (context.setLineDash) {
            // for very outofdate browsers
            switch (outlineStyle) {
              case 'dotted':
                context.setLineDash([1, 1]);
                break;
              case 'dashed':
                context.setLineDash([4, 2]);
                break;
              case 'solid':
              case 'double':
                context.setLineDash([]);
                break;
            }
          }
          var npos = pos;
          if (usePaths) {
            npos = {
              x: 0,
              y: 0
            };
          }
          var shape = r.getNodeShape(node);
          var bWidth = borderWidth;
          if (borderPosition === 'inside') bWidth = 0;
          if (borderPosition === 'outside') bWidth *= 2;
          var scaleX = (nodeWidth + bWidth + (outlineWidth + outlineOffset)) / nodeWidth;
          var scaleY = (nodeHeight + bWidth + (outlineWidth + outlineOffset)) / nodeHeight;
          var sWidth = nodeWidth * scaleX;
          var sHeight = nodeHeight * scaleY;
          var points = r.nodeShapes[shape].points;
          var _path;
          if (usePaths) {
            var outlinePath = getPath(sWidth, sHeight, shape, points);
            _path = outlinePath.path;
          }

          // draw the outline path, either by using expanded points or by scaling 
          // the dimensions, depending on shape
          if (shape === "ellipse") {
            r.drawEllipsePath(_path || context, npos.x, npos.y, sWidth, sHeight);
          } else if (['round-diamond', 'round-heptagon', 'round-hexagon', 'round-octagon', 'round-pentagon', 'round-polygon', 'round-triangle', 'round-tag'].includes(shape)) {
            var sMult = 0;
            var offsetX = 0;
            var offsetY = 0;
            if (shape === 'round-diamond') {
              sMult = (bWidth + outlineOffset + outlineWidth) * 1.4;
            } else if (shape === 'round-heptagon') {
              sMult = (bWidth + outlineOffset + outlineWidth) * 1.075;
              offsetY = -(bWidth / 2 + outlineOffset + outlineWidth) / 35;
            } else if (shape === 'round-hexagon') {
              sMult = (bWidth + outlineOffset + outlineWidth) * 1.12;
            } else if (shape === 'round-pentagon') {
              sMult = (bWidth + outlineOffset + outlineWidth) * 1.13;
              offsetY = -(bWidth / 2 + outlineOffset + outlineWidth) / 15;
            } else if (shape === 'round-tag') {
              sMult = (bWidth + outlineOffset + outlineWidth) * 1.12;
              offsetX = (bWidth / 2 + outlineWidth + outlineOffset) * .07;
            } else if (shape === 'round-triangle') {
              sMult = (bWidth + outlineOffset + outlineWidth) * (Math.PI / 2);
              offsetY = -(bWidth + outlineOffset / 2 + outlineWidth) / Math.PI;
            }
            if (sMult !== 0) {
              scaleX = (nodeWidth + sMult) / nodeWidth;
              sWidth = nodeWidth * scaleX;
              if (!['round-hexagon', 'round-tag'].includes(shape)) {
                scaleY = (nodeHeight + sMult) / nodeHeight;
                sHeight = nodeHeight * scaleY;
              }
            }
            cornerRadius = cornerRadius === 'auto' ? getRoundPolygonRadius(sWidth, sHeight) : cornerRadius;
            var halfW = sWidth / 2;
            var halfH = sHeight / 2;
            var radius = cornerRadius + (bWidth + outlineWidth + outlineOffset) / 2;
            var p = new Array(points.length / 2);
            var corners = new Array(points.length / 2);
            for (var _i3 = 0; _i3 < points.length / 2; _i3++) {
              p[_i3] = {
                x: npos.x + offsetX + halfW * points[_i3 * 2],
                y: npos.y + offsetY + halfH * points[_i3 * 2 + 1]
              };
            }
            var _i2,
              p1,
              p2,
              p3,
              len = p.length;
            p1 = p[len - 1];
            // for each point
            for (_i2 = 0; _i2 < len; _i2++) {
              p2 = p[_i2 % len];
              p3 = p[(_i2 + 1) % len];
              corners[_i2] = getRoundCorner(p1, p2, p3, radius);
              p1 = p2;
              p2 = p3;
            }
            r.drawRoundPolygonPath(_path || context, npos.x + offsetX, npos.y + offsetY, nodeWidth * scaleX, nodeHeight * scaleY, points, corners);
          } else if (['roundrectangle', 'round-rectangle'].includes(shape)) {
            cornerRadius = cornerRadius === 'auto' ? getRoundRectangleRadius(sWidth, sHeight) : cornerRadius;
            r.drawRoundRectanglePath(_path || context, npos.x, npos.y, sWidth, sHeight, cornerRadius + (bWidth + outlineWidth + outlineOffset) / 2);
          } else if (['cutrectangle', 'cut-rectangle'].includes(shape)) {
            cornerRadius = cornerRadius === 'auto' ? getCutRectangleCornerLength() : cornerRadius;
            r.drawCutRectanglePath(_path || context, npos.x, npos.y, sWidth, sHeight, null, cornerRadius + (bWidth + outlineWidth + outlineOffset) / 4);
          } else if (['bottomroundrectangle', 'bottom-round-rectangle'].includes(shape)) {
            cornerRadius = cornerRadius === 'auto' ? getRoundRectangleRadius(sWidth, sHeight) : cornerRadius;
            r.drawBottomRoundRectanglePath(_path || context, npos.x, npos.y, sWidth, sHeight, cornerRadius + (bWidth + outlineWidth + outlineOffset) / 2);
          } else if (shape === "barrel") {
            r.drawBarrelPath(_path || context, npos.x, npos.y, sWidth, sHeight);
          } else if (shape.startsWith("polygon") || ['rhomboid', 'right-rhomboid', 'round-tag', 'tag', 'vee'].includes(shape)) {
            var pad = (bWidth + outlineWidth + outlineOffset) / nodeWidth;
            points = joinLines(expandPolygon(points, pad));
            r.drawPolygonPath(_path || context, npos.x, npos.y, nodeWidth, nodeHeight, points);
          } else {
            var _pad = (bWidth + outlineWidth + outlineOffset) / nodeWidth;
            points = joinLines(expandPolygon(points, -_pad));
            r.drawPolygonPath(_path || context, npos.x, npos.y, nodeWidth, nodeHeight, points);
          }
          if (usePaths) {
            context.stroke(_path);
          } else {
            context.stroke();
          }
          if (outlineStyle === 'double') {
            context.lineWidth = bWidth / 3;
            var gco = context.globalCompositeOperation;
            context.globalCompositeOperation = 'destination-out';
            if (usePaths) {
              context.stroke(_path);
            } else {
              context.stroke();
            }
            context.globalCompositeOperation = gco;
          }

          // reset in case we changed the border style
          if (context.setLineDash) {
            // for very outofdate browsers
            context.setLineDash([]);
          }
        }
      };
      var drawOverlay = function drawOverlay() {
        if (shouldDrawOverlay) {
          r.drawNodeOverlay(context, node, pos, nodeWidth, nodeHeight);
        }
      };
      var drawUnderlay = function drawUnderlay() {
        if (shouldDrawOverlay) {
          r.drawNodeUnderlay(context, node, pos, nodeWidth, nodeHeight);
        }
      };
      var drawText = function drawText() {
        r.drawElementText(context, node, null, drawLabel);
      };
      var ghost = node.pstyle('ghost').value === 'yes';
      if (ghost) {
        var gx = node.pstyle('ghost-offset-x').pfValue;
        var gy = node.pstyle('ghost-offset-y').pfValue;
        var ghostOpacity = node.pstyle('ghost-opacity').value;
        var effGhostOpacity = ghostOpacity * eleOpacity;
        context.translate(gx, gy);
        setupOutlineColor();
        drawOutline();
        setupShapeColor(ghostOpacity * bgOpacity);
        drawShape();
        drawImages(effGhostOpacity, true);
        setupBorderColor(ghostOpacity * borderOpacity);
        drawBorder();
        drawPie(darkness !== 0 || borderWidth !== 0);
        drawImages(effGhostOpacity, false);
        darken(effGhostOpacity);
        context.translate(-gx, -gy);
      }
      if (usePaths) {
        context.translate(-pos.x, -pos.y);
      }
      drawUnderlay();
      if (usePaths) {
        context.translate(pos.x, pos.y);
      }
      setupOutlineColor();
      drawOutline();
      setupShapeColor();
      drawShape();
      drawImages(eleOpacity, true);
      setupBorderColor();
      drawBorder();
      drawPie(darkness !== 0 || borderWidth !== 0);
      drawImages(eleOpacity, false);
      darken();
      if (usePaths) {
        context.translate(-pos.x, -pos.y);
      }
      drawText();
      drawOverlay();

      //
      // clean up shift

      if (shiftToOriginWithBb) {
        context.translate(bb.x1, bb.y1);
      }
    };
    var drawNodeOverlayUnderlay = function drawNodeOverlayUnderlay(overlayOrUnderlay) {
      if (!['overlay', 'underlay'].includes(overlayOrUnderlay)) {
        throw new Error('Invalid state');
      }
      return function (context, node, pos, nodeWidth, nodeHeight) {
        var r = this;
        if (!node.visible()) {
          return;
        }
        var padding = node.pstyle("".concat(overlayOrUnderlay, "-padding")).pfValue;
        var opacity = node.pstyle("".concat(overlayOrUnderlay, "-opacity")).value;
        var color = node.pstyle("".concat(overlayOrUnderlay, "-color")).value;
        var shape = node.pstyle("".concat(overlayOrUnderlay, "-shape")).value;
        var radius = node.pstyle("".concat(overlayOrUnderlay, "-corner-radius")).value;
        if (opacity > 0) {
          pos = pos || node.position();
          if (nodeWidth == null || nodeHeight == null) {
            var _padding = node.padding();
            nodeWidth = node.width() + 2 * _padding;
            nodeHeight = node.height() + 2 * _padding;
          }
          r.colorFillStyle(context, color[0], color[1], color[2], opacity);
          r.nodeShapes[shape].draw(context, pos.x, pos.y, nodeWidth + padding * 2, nodeHeight + padding * 2, radius);
          context.fill();
        }
      };
    };
    CRp$5.drawNodeOverlay = drawNodeOverlayUnderlay('overlay');
    CRp$5.drawNodeUnderlay = drawNodeOverlayUnderlay('underlay');

    // does the node have at least one pie piece?
    CRp$5.hasPie = function (node) {
      node = node[0]; // ensure ele ref

      return node._private.hasPie;
    };
    CRp$5.drawPie = function (context, node, nodeOpacity, pos) {
      node = node[0]; // ensure ele ref
      pos = pos || node.position();
      var cyStyle = node.cy().style();
      var pieSize = node.pstyle('pie-size');
      var x = pos.x;
      var y = pos.y;
      var nodeW = node.width();
      var nodeH = node.height();
      var radius = Math.min(nodeW, nodeH) / 2; // must fit in node
      var lastPercent = 0; // what % to continue drawing pie slices from on [0, 1]
      var usePaths = this.usePaths();
      if (usePaths) {
        x = 0;
        y = 0;
      }
      if (pieSize.units === '%') {
        radius = radius * pieSize.pfValue;
      } else if (pieSize.pfValue !== undefined) {
        radius = pieSize.pfValue / 2;
      }
      for (var i = 1; i <= cyStyle.pieBackgroundN; i++) {
        // 1..N
        var size = node.pstyle('pie-' + i + '-background-size').value;
        var color = node.pstyle('pie-' + i + '-background-color').value;
        var opacity = node.pstyle('pie-' + i + '-background-opacity').value * nodeOpacity;
        var percent = size / 100; // map integer range [0, 100] to [0, 1]

        // percent can't push beyond 1
        if (percent + lastPercent > 1) {
          percent = 1 - lastPercent;
        }
        var angleStart = 1.5 * Math.PI + 2 * Math.PI * lastPercent; // start at 12 o'clock and go clockwise
        var angleDelta = 2 * Math.PI * percent;
        var angleEnd = angleStart + angleDelta;

        // ignore if
        // - zero size
        // - we're already beyond the full circle
        // - adding the current slice would go beyond the full circle
        if (size === 0 || lastPercent >= 1 || lastPercent + percent > 1) {
          continue;
        }
        context.beginPath();
        context.moveTo(x, y);
        context.arc(x, y, radius, angleStart, angleEnd);
        context.closePath();
        this.colorFillStyle(context, color[0], color[1], color[2], opacity);
        context.fill();
        lastPercent += percent;
      }
    };

    var CRp$4 = {};
    var motionBlurDelay = 100;

    // var isFirefox = typeof InstallTrigger !== 'undefined';

    CRp$4.getPixelRatio = function () {
      var context = this.data.contexts[0];
      if (this.forcedPixelRatio != null) {
        return this.forcedPixelRatio;
      }
      var backingStore = context.backingStorePixelRatio || context.webkitBackingStorePixelRatio || context.mozBackingStorePixelRatio || context.msBackingStorePixelRatio || context.oBackingStorePixelRatio || context.backingStorePixelRatio || 1;
      return (window.devicePixelRatio || 1) / backingStore; // eslint-disable-line no-undef
    };

    CRp$4.paintCache = function (context) {
      var caches = this.paintCaches = this.paintCaches || [];
      var needToCreateCache = true;
      var cache;
      for (var i = 0; i < caches.length; i++) {
        cache = caches[i];
        if (cache.context === context) {
          needToCreateCache = false;
          break;
        }
      }
      if (needToCreateCache) {
        cache = {
          context: context
        };
        caches.push(cache);
      }
      return cache;
    };
    CRp$4.createGradientStyleFor = function (context, shapeStyleName, ele, fill, opacity) {
      var gradientStyle;
      var usePaths = this.usePaths();
      var colors = ele.pstyle(shapeStyleName + '-gradient-stop-colors').value,
        positions = ele.pstyle(shapeStyleName + '-gradient-stop-positions').pfValue;
      if (fill === 'radial-gradient') {
        if (ele.isEdge()) {
          var start = ele.sourceEndpoint(),
            end = ele.targetEndpoint(),
            mid = ele.midpoint();
          var d1 = dist(start, mid);
          var d2 = dist(end, mid);
          gradientStyle = context.createRadialGradient(mid.x, mid.y, 0, mid.x, mid.y, Math.max(d1, d2));
        } else {
          var pos = usePaths ? {
              x: 0,
              y: 0
            } : ele.position(),
            width = ele.paddedWidth(),
            height = ele.paddedHeight();
          gradientStyle = context.createRadialGradient(pos.x, pos.y, 0, pos.x, pos.y, Math.max(width, height));
        }
      } else {
        if (ele.isEdge()) {
          var _start = ele.sourceEndpoint(),
            _end = ele.targetEndpoint();
          gradientStyle = context.createLinearGradient(_start.x, _start.y, _end.x, _end.y);
        } else {
          var _pos = usePaths ? {
              x: 0,
              y: 0
            } : ele.position(),
            _width = ele.paddedWidth(),
            _height = ele.paddedHeight(),
            halfWidth = _width / 2,
            halfHeight = _height / 2;
          var direction = ele.pstyle('background-gradient-direction').value;
          switch (direction) {
            case 'to-bottom':
              gradientStyle = context.createLinearGradient(_pos.x, _pos.y - halfHeight, _pos.x, _pos.y + halfHeight);
              break;
            case 'to-top':
              gradientStyle = context.createLinearGradient(_pos.x, _pos.y + halfHeight, _pos.x, _pos.y - halfHeight);
              break;
            case 'to-left':
              gradientStyle = context.createLinearGradient(_pos.x + halfWidth, _pos.y, _pos.x - halfWidth, _pos.y);
              break;
            case 'to-right':
              gradientStyle = context.createLinearGradient(_pos.x - halfWidth, _pos.y, _pos.x + halfWidth, _pos.y);
              break;
            case 'to-bottom-right':
            case 'to-right-bottom':
              gradientStyle = context.createLinearGradient(_pos.x - halfWidth, _pos.y - halfHeight, _pos.x + halfWidth, _pos.y + halfHeight);
              break;
            case 'to-top-right':
            case 'to-right-top':
              gradientStyle = context.createLinearGradient(_pos.x - halfWidth, _pos.y + halfHeight, _pos.x + halfWidth, _pos.y - halfHeight);
              break;
            case 'to-bottom-left':
            case 'to-left-bottom':
              gradientStyle = context.createLinearGradient(_pos.x + halfWidth, _pos.y - halfHeight, _pos.x - halfWidth, _pos.y + halfHeight);
              break;
            case 'to-top-left':
            case 'to-left-top':
              gradientStyle = context.createLinearGradient(_pos.x + halfWidth, _pos.y + halfHeight, _pos.x - halfWidth, _pos.y - halfHeight);
              break;
          }
        }
      }
      if (!gradientStyle) return null; // invalid gradient style

      var hasPositions = positions.length === colors.length;
      var length = colors.length;
      for (var i = 0; i < length; i++) {
        gradientStyle.addColorStop(hasPositions ? positions[i] : i / (length - 1), 'rgba(' + colors[i][0] + ',' + colors[i][1] + ',' + colors[i][2] + ',' + opacity + ')');
      }
      return gradientStyle;
    };
    CRp$4.gradientFillStyle = function (context, ele, fill, opacity) {
      var gradientStyle = this.createGradientStyleFor(context, 'background', ele, fill, opacity);
      if (!gradientStyle) return null; // error
      context.fillStyle = gradientStyle;
    };
    CRp$4.colorFillStyle = function (context, r, g, b, a) {
      context.fillStyle = 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')';
      // turn off for now, seems context does its own caching

      // var cache = this.paintCache(context);

      // var fillStyle = 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')';

      // if( cache.fillStyle !== fillStyle ){
      //   context.fillStyle = cache.fillStyle = fillStyle;
      // }
    };

    CRp$4.eleFillStyle = function (context, ele, opacity) {
      var backgroundFill = ele.pstyle('background-fill').value;
      if (backgroundFill === 'linear-gradient' || backgroundFill === 'radial-gradient') {
        this.gradientFillStyle(context, ele, backgroundFill, opacity);
      } else {
        var backgroundColor = ele.pstyle('background-color').value;
        this.colorFillStyle(context, backgroundColor[0], backgroundColor[1], backgroundColor[2], opacity);
      }
    };
    CRp$4.gradientStrokeStyle = function (context, ele, fill, opacity) {
      var gradientStyle = this.createGradientStyleFor(context, 'line', ele, fill, opacity);
      if (!gradientStyle) return null; // error
      context.strokeStyle = gradientStyle;
    };
    CRp$4.colorStrokeStyle = function (context, r, g, b, a) {
      context.strokeStyle = 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')';
      // turn off for now, seems context does its own caching

      // var cache = this.paintCache(context);

      // var strokeStyle = 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')';

      // if( cache.strokeStyle !== strokeStyle ){
      //   context.strokeStyle = cache.strokeStyle = strokeStyle;
      // }
    };

    CRp$4.eleStrokeStyle = function (context, ele, opacity) {
      var lineFill = ele.pstyle('line-fill').value;
      if (lineFill === 'linear-gradient' || lineFill === 'radial-gradient') {
        this.gradientStrokeStyle(context, ele, lineFill, opacity);
      } else {
        var lineColor = ele.pstyle('line-color').value;
        this.colorStrokeStyle(context, lineColor[0], lineColor[1], lineColor[2], opacity);
      }
    };

    // Resize canvas
    CRp$4.matchCanvasSize = function (container) {
      var r = this;
      var data = r.data;
      var bb = r.findContainerClientCoords();
      var width = bb[2];
      var height = bb[3];
      var pixelRatio = r.getPixelRatio();
      var mbPxRatio = r.motionBlurPxRatio;
      if (container === r.data.bufferCanvases[r.MOTIONBLUR_BUFFER_NODE] || container === r.data.bufferCanvases[r.MOTIONBLUR_BUFFER_DRAG]) {
        pixelRatio = mbPxRatio;
      }
      var canvasWidth = width * pixelRatio;
      var canvasHeight = height * pixelRatio;
      var canvas;
      if (canvasWidth === r.canvasWidth && canvasHeight === r.canvasHeight) {
        return; // save cycles if same
      }

      r.fontCaches = null; // resizing resets the style

      var canvasContainer = data.canvasContainer;
      canvasContainer.style.width = width + 'px';
      canvasContainer.style.height = height + 'px';
      for (var i = 0; i < r.CANVAS_LAYERS; i++) {
        canvas = data.canvases[i];
        canvas.width = canvasWidth;
        canvas.height = canvasHeight;
        canvas.style.width = width + 'px';
        canvas.style.height = height + 'px';
      }
      for (var i = 0; i < r.BUFFER_COUNT; i++) {
        canvas = data.bufferCanvases[i];
        canvas.width = canvasWidth;
        canvas.height = canvasHeight;
        canvas.style.width = width + 'px';
        canvas.style.height = height + 'px';
      }
      r.textureMult = 1;
      if (pixelRatio <= 1) {
        canvas = data.bufferCanvases[r.TEXTURE_BUFFER];
        r.textureMult = 2;
        canvas.width = canvasWidth * r.textureMult;
        canvas.height = canvasHeight * r.textureMult;
      }
      r.canvasWidth = canvasWidth;
      r.canvasHeight = canvasHeight;
    };
    CRp$4.renderTo = function (cxt, zoom, pan, pxRatio) {
      this.render({
        forcedContext: cxt,
        forcedZoom: zoom,
        forcedPan: pan,
        drawAllLayers: true,
        forcedPxRatio: pxRatio
      });
    };
    CRp$4.render = function (options) {
      options = options || staticEmptyObject();
      var forcedContext = options.forcedContext;
      var drawAllLayers = options.drawAllLayers;
      var drawOnlyNodeLayer = options.drawOnlyNodeLayer;
      var forcedZoom = options.forcedZoom;
      var forcedPan = options.forcedPan;
      var r = this;
      var pixelRatio = options.forcedPxRatio === undefined ? this.getPixelRatio() : options.forcedPxRatio;
      var cy = r.cy;
      var data = r.data;
      var needDraw = data.canvasNeedsRedraw;
      var textureDraw = r.textureOnViewport && !forcedContext && (r.pinching || r.hoverData.dragging || r.swipePanning || r.data.wheelZooming);
      var motionBlur = options.motionBlur !== undefined ? options.motionBlur : r.motionBlur;
      var mbPxRatio = r.motionBlurPxRatio;
      var hasCompoundNodes = cy.hasCompoundNodes();
      var inNodeDragGesture = r.hoverData.draggingEles;
      var inBoxSelection = r.hoverData.selecting || r.touchData.selecting ? true : false;
      motionBlur = motionBlur && !forcedContext && r.motionBlurEnabled && !inBoxSelection;
      var motionBlurFadeEffect = motionBlur;
      if (!forcedContext) {
        if (r.prevPxRatio !== pixelRatio) {
          r.invalidateContainerClientCoordsCache();
          r.matchCanvasSize(r.container);
          r.redrawHint('eles', true);
          r.redrawHint('drag', true);
        }
        r.prevPxRatio = pixelRatio;
      }
      if (!forcedContext && r.motionBlurTimeout) {
        clearTimeout(r.motionBlurTimeout);
      }
      if (motionBlur) {
        if (r.mbFrames == null) {
          r.mbFrames = 0;
        }
        r.mbFrames++;
        if (r.mbFrames < 3) {
          // need several frames before even high quality motionblur
          motionBlurFadeEffect = false;
        }

        // go to lower quality blurry frames when several m/b frames have been rendered (avoids flashing)
        if (r.mbFrames > r.minMbLowQualFrames) {
          //r.fullQualityMb = false;
          r.motionBlurPxRatio = r.mbPxRBlurry;
        }
      }
      if (r.clearingMotionBlur) {
        r.motionBlurPxRatio = 1;
      }

      // b/c drawToContext() may be async w.r.t. redraw(), keep track of last texture frame
      // because a rogue async texture frame would clear needDraw
      if (r.textureDrawLastFrame && !textureDraw) {
        needDraw[r.NODE] = true;
        needDraw[r.SELECT_BOX] = true;
      }
      var style = cy.style();
      var zoom = cy.zoom();
      var effectiveZoom = forcedZoom !== undefined ? forcedZoom : zoom;
      var pan = cy.pan();
      var effectivePan = {
        x: pan.x,
        y: pan.y
      };
      var vp = {
        zoom: zoom,
        pan: {
          x: pan.x,
          y: pan.y
        }
      };
      var prevVp = r.prevViewport;
      var viewportIsDiff = prevVp === undefined || vp.zoom !== prevVp.zoom || vp.pan.x !== prevVp.pan.x || vp.pan.y !== prevVp.pan.y;

      // we want the low quality motionblur only when the viewport is being manipulated etc (where it's not noticed)
      if (!viewportIsDiff && !(inNodeDragGesture && !hasCompoundNodes)) {
        r.motionBlurPxRatio = 1;
      }
      if (forcedPan) {
        effectivePan = forcedPan;
      }

      // apply pixel ratio

      effectiveZoom *= pixelRatio;
      effectivePan.x *= pixelRatio;
      effectivePan.y *= pixelRatio;
      var eles = r.getCachedZSortedEles();
      function mbclear(context, x, y, w, h) {
        var gco = context.globalCompositeOperation;
        context.globalCompositeOperation = 'destination-out';
        r.colorFillStyle(context, 255, 255, 255, r.motionBlurTransparency);
        context.fillRect(x, y, w, h);
        context.globalCompositeOperation = gco;
      }
      function setContextTransform(context, clear) {
        var ePan, eZoom, w, h;
        if (!r.clearingMotionBlur && (context === data.bufferContexts[r.MOTIONBLUR_BUFFER_NODE] || context === data.bufferContexts[r.MOTIONBLUR_BUFFER_DRAG])) {
          ePan = {
            x: pan.x * mbPxRatio,
            y: pan.y * mbPxRatio
          };
          eZoom = zoom * mbPxRatio;
          w = r.canvasWidth * mbPxRatio;
          h = r.canvasHeight * mbPxRatio;
        } else {
          ePan = effectivePan;
          eZoom = effectiveZoom;
          w = r.canvasWidth;
          h = r.canvasHeight;
        }
        context.setTransform(1, 0, 0, 1, 0, 0);
        if (clear === 'motionBlur') {
          mbclear(context, 0, 0, w, h);
        } else if (!forcedContext && (clear === undefined || clear)) {
          context.clearRect(0, 0, w, h);
        }
        if (!drawAllLayers) {
          context.translate(ePan.x, ePan.y);
          context.scale(eZoom, eZoom);
        }
        if (forcedPan) {
          context.translate(forcedPan.x, forcedPan.y);
        }
        if (forcedZoom) {
          context.scale(forcedZoom, forcedZoom);
        }
      }
      if (!textureDraw) {
        r.textureDrawLastFrame = false;
      }
      if (textureDraw) {
        r.textureDrawLastFrame = true;
        if (!r.textureCache) {
          r.textureCache = {};
          r.textureCache.bb = cy.mutableElements().boundingBox();
          r.textureCache.texture = r.data.bufferCanvases[r.TEXTURE_BUFFER];
          var cxt = r.data.bufferContexts[r.TEXTURE_BUFFER];
          cxt.setTransform(1, 0, 0, 1, 0, 0);
          cxt.clearRect(0, 0, r.canvasWidth * r.textureMult, r.canvasHeight * r.textureMult);
          r.render({
            forcedContext: cxt,
            drawOnlyNodeLayer: true,
            forcedPxRatio: pixelRatio * r.textureMult
          });
          var vp = r.textureCache.viewport = {
            zoom: cy.zoom(),
            pan: cy.pan(),
            width: r.canvasWidth,
            height: r.canvasHeight
          };
          vp.mpan = {
            x: (0 - vp.pan.x) / vp.zoom,
            y: (0 - vp.pan.y) / vp.zoom
          };
        }
        needDraw[r.DRAG] = false;
        needDraw[r.NODE] = false;
        var context = data.contexts[r.NODE];
        var texture = r.textureCache.texture;
        var vp = r.textureCache.viewport;
        context.setTransform(1, 0, 0, 1, 0, 0);
        if (motionBlur) {
          mbclear(context, 0, 0, vp.width, vp.height);
        } else {
          context.clearRect(0, 0, vp.width, vp.height);
        }
        var outsideBgColor = style.core('outside-texture-bg-color').value;
        var outsideBgOpacity = style.core('outside-texture-bg-opacity').value;
        r.colorFillStyle(context, outsideBgColor[0], outsideBgColor[1], outsideBgColor[2], outsideBgOpacity);
        context.fillRect(0, 0, vp.width, vp.height);
        var zoom = cy.zoom();
        setContextTransform(context, false);
        context.clearRect(vp.mpan.x, vp.mpan.y, vp.width / vp.zoom / pixelRatio, vp.height / vp.zoom / pixelRatio);
        context.drawImage(texture, vp.mpan.x, vp.mpan.y, vp.width / vp.zoom / pixelRatio, vp.height / vp.zoom / pixelRatio);
      } else if (r.textureOnViewport && !forcedContext) {
        // clear the cache since we don't need it
        r.textureCache = null;
      }
      var extent = cy.extent();
      var vpManip = r.pinching || r.hoverData.dragging || r.swipePanning || r.data.wheelZooming || r.hoverData.draggingEles || r.cy.animated();
      var hideEdges = r.hideEdgesOnViewport && vpManip;
      var needMbClear = [];
      needMbClear[r.NODE] = !needDraw[r.NODE] && motionBlur && !r.clearedForMotionBlur[r.NODE] || r.clearingMotionBlur;
      if (needMbClear[r.NODE]) {
        r.clearedForMotionBlur[r.NODE] = true;
      }
      needMbClear[r.DRAG] = !needDraw[r.DRAG] && motionBlur && !r.clearedForMotionBlur[r.DRAG] || r.clearingMotionBlur;
      if (needMbClear[r.DRAG]) {
        r.clearedForMotionBlur[r.DRAG] = true;
      }
      if (needDraw[r.NODE] || drawAllLayers || drawOnlyNodeLayer || needMbClear[r.NODE]) {
        var useBuffer = motionBlur && !needMbClear[r.NODE] && mbPxRatio !== 1;
        var context = forcedContext || (useBuffer ? r.data.bufferContexts[r.MOTIONBLUR_BUFFER_NODE] : data.contexts[r.NODE]);
        var clear = motionBlur && !useBuffer ? 'motionBlur' : undefined;
        setContextTransform(context, clear);
        if (hideEdges) {
          r.drawCachedNodes(context, eles.nondrag, pixelRatio, extent);
        } else {
          r.drawLayeredElements(context, eles.nondrag, pixelRatio, extent);
        }
        if (r.debug) {
          r.drawDebugPoints(context, eles.nondrag);
        }
        if (!drawAllLayers && !motionBlur) {
          needDraw[r.NODE] = false;
        }
      }
      if (!drawOnlyNodeLayer && (needDraw[r.DRAG] || drawAllLayers || needMbClear[r.DRAG])) {
        var useBuffer = motionBlur && !needMbClear[r.DRAG] && mbPxRatio !== 1;
        var context = forcedContext || (useBuffer ? r.data.bufferContexts[r.MOTIONBLUR_BUFFER_DRAG] : data.contexts[r.DRAG]);
        setContextTransform(context, motionBlur && !useBuffer ? 'motionBlur' : undefined);
        if (hideEdges) {
          r.drawCachedNodes(context, eles.drag, pixelRatio, extent);
        } else {
          r.drawCachedElements(context, eles.drag, pixelRatio, extent);
        }
        if (r.debug) {
          r.drawDebugPoints(context, eles.drag);
        }
        if (!drawAllLayers && !motionBlur) {
          needDraw[r.DRAG] = false;
        }
      }
      if (r.showFps || !drawOnlyNodeLayer && needDraw[r.SELECT_BOX] && !drawAllLayers) {
        var context = forcedContext || data.contexts[r.SELECT_BOX];
        setContextTransform(context);
        if (r.selection[4] == 1 && (r.hoverData.selecting || r.touchData.selecting)) {
          var zoom = r.cy.zoom();
          var borderWidth = style.core('selection-box-border-width').value / zoom;
          context.lineWidth = borderWidth;
          context.fillStyle = 'rgba(' + style.core('selection-box-color').value[0] + ',' + style.core('selection-box-color').value[1] + ',' + style.core('selection-box-color').value[2] + ',' + style.core('selection-box-opacity').value + ')';
          context.fillRect(r.selection[0], r.selection[1], r.selection[2] - r.selection[0], r.selection[3] - r.selection[1]);
          if (borderWidth > 0) {
            context.strokeStyle = 'rgba(' + style.core('selection-box-border-color').value[0] + ',' + style.core('selection-box-border-color').value[1] + ',' + style.core('selection-box-border-color').value[2] + ',' + style.core('selection-box-opacity').value + ')';
            context.strokeRect(r.selection[0], r.selection[1], r.selection[2] - r.selection[0], r.selection[3] - r.selection[1]);
          }
        }
        if (data.bgActivePosistion && !r.hoverData.selecting) {
          var zoom = r.cy.zoom();
          var pos = data.bgActivePosistion;
          context.fillStyle = 'rgba(' + style.core('active-bg-color').value[0] + ',' + style.core('active-bg-color').value[1] + ',' + style.core('active-bg-color').value[2] + ',' + style.core('active-bg-opacity').value + ')';
          context.beginPath();
          context.arc(pos.x, pos.y, style.core('active-bg-size').pfValue / zoom, 0, 2 * Math.PI);
          context.fill();
        }
        var timeToRender = r.lastRedrawTime;
        if (r.showFps && timeToRender) {
          timeToRender = Math.round(timeToRender);
          var fps = Math.round(1000 / timeToRender);
          context.setTransform(1, 0, 0, 1, 0, 0);
          context.fillStyle = 'rgba(255, 0, 0, 0.75)';
          context.strokeStyle = 'rgba(255, 0, 0, 0.75)';
          context.lineWidth = 1;
          context.fillText('1 frame = ' + timeToRender + ' ms = ' + fps + ' fps', 0, 20);
          var maxFps = 60;
          context.strokeRect(0, 30, 250, 20);
          context.fillRect(0, 30, 250 * Math.min(fps / maxFps, 1), 20);
        }
        if (!drawAllLayers) {
          needDraw[r.SELECT_BOX] = false;
        }
      }

      // motionblur: blit rendered blurry frames
      if (motionBlur && mbPxRatio !== 1) {
        var cxtNode = data.contexts[r.NODE];
        var txtNode = r.data.bufferCanvases[r.MOTIONBLUR_BUFFER_NODE];
        var cxtDrag = data.contexts[r.DRAG];
        var txtDrag = r.data.bufferCanvases[r.MOTIONBLUR_BUFFER_DRAG];
        var drawMotionBlur = function drawMotionBlur(cxt, txt, needClear) {
          cxt.setTransform(1, 0, 0, 1, 0, 0);
          if (needClear || !motionBlurFadeEffect) {
            cxt.clearRect(0, 0, r.canvasWidth, r.canvasHeight);
          } else {
            mbclear(cxt, 0, 0, r.canvasWidth, r.canvasHeight);
          }
          var pxr = mbPxRatio;
          cxt.drawImage(txt,
          // img
          0, 0,
          // sx, sy
          r.canvasWidth * pxr, r.canvasHeight * pxr,
          // sw, sh
          0, 0,
          // x, y
          r.canvasWidth, r.canvasHeight // w, h
          );
        };

        if (needDraw[r.NODE] || needMbClear[r.NODE]) {
          drawMotionBlur(cxtNode, txtNode, needMbClear[r.NODE]);
          needDraw[r.NODE] = false;
        }
        if (needDraw[r.DRAG] || needMbClear[r.DRAG]) {
          drawMotionBlur(cxtDrag, txtDrag, needMbClear[r.DRAG]);
          needDraw[r.DRAG] = false;
        }
      }
      r.prevViewport = vp;
      if (r.clearingMotionBlur) {
        r.clearingMotionBlur = false;
        r.motionBlurCleared = true;
        r.motionBlur = true;
      }
      if (motionBlur) {
        r.motionBlurTimeout = setTimeout(function () {
          r.motionBlurTimeout = null;
          r.clearedForMotionBlur[r.NODE] = false;
          r.clearedForMotionBlur[r.DRAG] = false;
          r.motionBlur = false;
          r.clearingMotionBlur = !textureDraw;
          r.mbFrames = 0;
          needDraw[r.NODE] = true;
          needDraw[r.DRAG] = true;
          r.redraw();
        }, motionBlurDelay);
      }
      if (!forcedContext) {
        cy.emit('render');
      }
    };

    var CRp$3 = {};

    // @O Polygon drawing
    CRp$3.drawPolygonPath = function (context, x, y, width, height, points) {
      var halfW = width / 2;
      var halfH = height / 2;
      if (context.beginPath) {
        context.beginPath();
      }
      context.moveTo(x + halfW * points[0], y + halfH * points[1]);
      for (var i = 1; i < points.length / 2; i++) {
        context.lineTo(x + halfW * points[i * 2], y + halfH * points[i * 2 + 1]);
      }
      context.closePath();
    };
    CRp$3.drawRoundPolygonPath = function (context, x, y, width, height, points, corners) {
      corners.forEach(function (corner) {
        return drawPreparedRoundCorner(context, corner);
      });
      context.closePath();
    };

    // Round rectangle drawing
    CRp$3.drawRoundRectanglePath = function (context, x, y, width, height, radius) {
      var halfWidth = width / 2;
      var halfHeight = height / 2;
      var cornerRadius = radius === 'auto' ? getRoundRectangleRadius(width, height) : Math.min(radius, halfHeight, halfWidth);
      if (context.beginPath) {
        context.beginPath();
      }

      // Start at top middle
      context.moveTo(x, y - halfHeight);
      // Arc from middle top to right side
      context.arcTo(x + halfWidth, y - halfHeight, x + halfWidth, y, cornerRadius);
      // Arc from right side to bottom
      context.arcTo(x + halfWidth, y + halfHeight, x, y + halfHeight, cornerRadius);
      // Arc from bottom to left side
      context.arcTo(x - halfWidth, y + halfHeight, x - halfWidth, y, cornerRadius);
      // Arc from left side to topBorder
      context.arcTo(x - halfWidth, y - halfHeight, x, y - halfHeight, cornerRadius);
      // Join line
      context.lineTo(x, y - halfHeight);
      context.closePath();
    };
    CRp$3.drawBottomRoundRectanglePath = function (context, x, y, width, height, radius) {
      var halfWidth = width / 2;
      var halfHeight = height / 2;
      var cornerRadius = radius === 'auto' ? getRoundRectangleRadius(width, height) : radius;
      if (context.beginPath) {
        context.beginPath();
      }

      // Start at top middle
      context.moveTo(x, y - halfHeight);
      context.lineTo(x + halfWidth, y - halfHeight);
      context.lineTo(x + halfWidth, y);
      context.arcTo(x + halfWidth, y + halfHeight, x, y + halfHeight, cornerRadius);
      context.arcTo(x - halfWidth, y + halfHeight, x - halfWidth, y, cornerRadius);
      context.lineTo(x - halfWidth, y - halfHeight);
      context.lineTo(x, y - halfHeight);
      context.closePath();
    };
    CRp$3.drawCutRectanglePath = function (context, x, y, width, height, points, corners) {
      var halfWidth = width / 2;
      var halfHeight = height / 2;
      var cornerLength = corners === 'auto' ? getCutRectangleCornerLength() : corners;
      if (context.beginPath) {
        context.beginPath();
      }
      context.moveTo(x - halfWidth + cornerLength, y - halfHeight);
      context.lineTo(x + halfWidth - cornerLength, y - halfHeight);
      context.lineTo(x + halfWidth, y - halfHeight + cornerLength);
      context.lineTo(x + halfWidth, y + halfHeight - cornerLength);
      context.lineTo(x + halfWidth - cornerLength, y + halfHeight);
      context.lineTo(x - halfWidth + cornerLength, y + halfHeight);
      context.lineTo(x - halfWidth, y + halfHeight - cornerLength);
      context.lineTo(x - halfWidth, y - halfHeight + cornerLength);
      context.closePath();
    };
    CRp$3.drawBarrelPath = function (context, x, y, width, height) {
      var halfWidth = width / 2;
      var halfHeight = height / 2;
      var xBegin = x - halfWidth;
      var xEnd = x + halfWidth;
      var yBegin = y - halfHeight;
      var yEnd = y + halfHeight;
      var barrelCurveConstants = getBarrelCurveConstants(width, height);
      var wOffset = barrelCurveConstants.widthOffset;
      var hOffset = barrelCurveConstants.heightOffset;
      var ctrlPtXOffset = barrelCurveConstants.ctrlPtOffsetPct * wOffset;
      if (context.beginPath) {
        context.beginPath();
      }
      context.moveTo(xBegin, yBegin + hOffset);
      context.lineTo(xBegin, yEnd - hOffset);
      context.quadraticCurveTo(xBegin + ctrlPtXOffset, yEnd, xBegin + wOffset, yEnd);
      context.lineTo(xEnd - wOffset, yEnd);
      context.quadraticCurveTo(xEnd - ctrlPtXOffset, yEnd, xEnd, yEnd - hOffset);
      context.lineTo(xEnd, yBegin + hOffset);
      context.quadraticCurveTo(xEnd - ctrlPtXOffset, yBegin, xEnd - wOffset, yBegin);
      context.lineTo(xBegin + wOffset, yBegin);
      context.quadraticCurveTo(xBegin + ctrlPtXOffset, yBegin, xBegin, yBegin + hOffset);
      context.closePath();
    };
    var sin0 = Math.sin(0);
    var cos0 = Math.cos(0);
    var sin = {};
    var cos = {};
    var ellipseStepSize = Math.PI / 40;
    for (var i$1 = 0 * Math.PI; i$1 < 2 * Math.PI; i$1 += ellipseStepSize) {
      sin[i$1] = Math.sin(i$1);
      cos[i$1] = Math.cos(i$1);
    }
    CRp$3.drawEllipsePath = function (context, centerX, centerY, width, height) {
      if (context.beginPath) {
        context.beginPath();
      }
      if (context.ellipse) {
        context.ellipse(centerX, centerY, width / 2, height / 2, 0, 0, 2 * Math.PI);
      } else {
        var xPos, yPos;
        var rw = width / 2;
        var rh = height / 2;
        for (var i = 0 * Math.PI; i < 2 * Math.PI; i += ellipseStepSize) {
          xPos = centerX - rw * sin[i] * sin0 + rw * cos[i] * cos0;
          yPos = centerY + rh * cos[i] * sin0 + rh * sin[i] * cos0;
          if (i === 0) {
            context.moveTo(xPos, yPos);
          } else {
            context.lineTo(xPos, yPos);
          }
        }
      }
      context.closePath();
    };

    /* global atob, ArrayBuffer, Uint8Array, Blob */
    var CRp$2 = {};
    CRp$2.createBuffer = function (w, h) {
      var buffer = document.createElement('canvas'); // eslint-disable-line no-undef
      buffer.width = w;
      buffer.height = h;
      return [buffer, buffer.getContext('2d')];
    };
    CRp$2.bufferCanvasImage = function (options) {
      var cy = this.cy;
      var eles = cy.mutableElements();
      var bb = eles.boundingBox();
      var ctrRect = this.findContainerClientCoords();
      var width = options.full ? Math.ceil(bb.w) : ctrRect[2];
      var height = options.full ? Math.ceil(bb.h) : ctrRect[3];
      var specdMaxDims = number$1(options.maxWidth) || number$1(options.maxHeight);
      var pxRatio = this.getPixelRatio();
      var scale = 1;
      if (options.scale !== undefined) {
        width *= options.scale;
        height *= options.scale;
        scale = options.scale;
      } else if (specdMaxDims) {
        var maxScaleW = Infinity;
        var maxScaleH = Infinity;
        if (number$1(options.maxWidth)) {
          maxScaleW = scale * options.maxWidth / width;
        }
        if (number$1(options.maxHeight)) {
          maxScaleH = scale * options.maxHeight / height;
        }
        scale = Math.min(maxScaleW, maxScaleH);
        width *= scale;
        height *= scale;
      }
      if (!specdMaxDims) {
        width *= pxRatio;
        height *= pxRatio;
        scale *= pxRatio;
      }
      var buffCanvas = document.createElement('canvas'); // eslint-disable-line no-undef

      buffCanvas.width = width;
      buffCanvas.height = height;
      buffCanvas.style.width = width + 'px';
      buffCanvas.style.height = height + 'px';
      var buffCxt = buffCanvas.getContext('2d');

      // Rasterize the layers, but only if container has nonzero size
      if (width > 0 && height > 0) {
        buffCxt.clearRect(0, 0, width, height);
        buffCxt.globalCompositeOperation = 'source-over';
        var zsortedEles = this.getCachedZSortedEles();
        if (options.full) {
          // draw the full bounds of the graph
          buffCxt.translate(-bb.x1 * scale, -bb.y1 * scale);
          buffCxt.scale(scale, scale);
          this.drawElements(buffCxt, zsortedEles);
          buffCxt.scale(1 / scale, 1 / scale);
          buffCxt.translate(bb.x1 * scale, bb.y1 * scale);
        } else {
          // draw the current view
          var pan = cy.pan();
          var translation = {
            x: pan.x * scale,
            y: pan.y * scale
          };
          scale *= cy.zoom();
          buffCxt.translate(translation.x, translation.y);
          buffCxt.scale(scale, scale);
          this.drawElements(buffCxt, zsortedEles);
          buffCxt.scale(1 / scale, 1 / scale);
          buffCxt.translate(-translation.x, -translation.y);
        }

        // need to fill bg at end like this in order to fill cleared transparent pixels in jpgs
        if (options.bg) {
          buffCxt.globalCompositeOperation = 'destination-over';
          buffCxt.fillStyle = options.bg;
          buffCxt.rect(0, 0, width, height);
          buffCxt.fill();
        }
      }
      return buffCanvas;
    };
    function b64ToBlob(b64, mimeType) {
      var bytes = atob(b64);
      var buff = new ArrayBuffer(bytes.length);
      var buffUint8 = new Uint8Array(buff);
      for (var i = 0; i < bytes.length; i++) {
        buffUint8[i] = bytes.charCodeAt(i);
      }
      return new Blob([buff], {
        type: mimeType
      });
    }
    function b64UriToB64(b64uri) {
      var i = b64uri.indexOf(',');
      return b64uri.substr(i + 1);
    }
    function output(options, canvas, mimeType) {
      var getB64Uri = function getB64Uri() {
        return canvas.toDataURL(mimeType, options.quality);
      };
      switch (options.output) {
        case 'blob-promise':
          return new Promise$1(function (resolve, reject) {
            try {
              canvas.toBlob(function (blob) {
                if (blob != null) {
                  resolve(blob);
                } else {
                  reject(new Error('`canvas.toBlob()` sent a null value in its callback'));
                }
              }, mimeType, options.quality);
            } catch (err) {
              reject(err);
            }
          });
        case 'blob':
          return b64ToBlob(b64UriToB64(getB64Uri()), mimeType);
        case 'base64':
          return b64UriToB64(getB64Uri());
        case 'base64uri':
        default:
          return getB64Uri();
      }
    }
    CRp$2.png = function (options) {
      return output(options, this.bufferCanvasImage(options), 'image/png');
    };
    CRp$2.jpg = function (options) {
      return output(options, this.bufferCanvasImage(options), 'image/jpeg');
    };

    var CRp$1 = {};
    CRp$1.nodeShapeImpl = function (name, context, centerX, centerY, width, height, points, corners) {
      switch (name) {
        case 'ellipse':
          return this.drawEllipsePath(context, centerX, centerY, width, height);
        case 'polygon':
          return this.drawPolygonPath(context, centerX, centerY, width, height, points);
        case 'round-polygon':
          return this.drawRoundPolygonPath(context, centerX, centerY, width, height, points, corners);
        case 'roundrectangle':
        case 'round-rectangle':
          return this.drawRoundRectanglePath(context, centerX, centerY, width, height, corners);
        case 'cutrectangle':
        case 'cut-rectangle':
          return this.drawCutRectanglePath(context, centerX, centerY, width, height, points, corners);
        case 'bottomroundrectangle':
        case 'bottom-round-rectangle':
          return this.drawBottomRoundRectanglePath(context, centerX, centerY, width, height, corners);
        case 'barrel':
          return this.drawBarrelPath(context, centerX, centerY, width, height);
      }
    };

    var CR = CanvasRenderer;
    var CRp = CanvasRenderer.prototype;
    CRp.CANVAS_LAYERS = 3;
    //
    CRp.SELECT_BOX = 0;
    CRp.DRAG = 1;
    CRp.NODE = 2;
    CRp.BUFFER_COUNT = 3;
    //
    CRp.TEXTURE_BUFFER = 0;
    CRp.MOTIONBLUR_BUFFER_NODE = 1;
    CRp.MOTIONBLUR_BUFFER_DRAG = 2;
    function CanvasRenderer(options) {
      var r = this;
      r.data = {
        canvases: new Array(CRp.CANVAS_LAYERS),
        contexts: new Array(CRp.CANVAS_LAYERS),
        canvasNeedsRedraw: new Array(CRp.CANVAS_LAYERS),
        bufferCanvases: new Array(CRp.BUFFER_COUNT),
        bufferContexts: new Array(CRp.CANVAS_LAYERS)
      };
      var tapHlOffAttr = '-webkit-tap-highlight-color';
      var tapHlOffStyle = 'rgba(0,0,0,0)';
      r.data.canvasContainer = document.createElement('div'); // eslint-disable-line no-undef
      var containerStyle = r.data.canvasContainer.style;
      r.data.canvasContainer.style[tapHlOffAttr] = tapHlOffStyle;
      containerStyle.position = 'relative';
      containerStyle.zIndex = '0';
      containerStyle.overflow = 'hidden';
      var container = options.cy.container();
      container.appendChild(r.data.canvasContainer);
      container.style[tapHlOffAttr] = tapHlOffStyle;
      var styleMap = {
        '-webkit-user-select': 'none',
        '-moz-user-select': '-moz-none',
        'user-select': 'none',
        '-webkit-tap-highlight-color': 'rgba(0,0,0,0)',
        'outline-style': 'none'
      };
      if (ms()) {
        styleMap['-ms-touch-action'] = 'none';
        styleMap['touch-action'] = 'none';
      }
      for (var i = 0; i < CRp.CANVAS_LAYERS; i++) {
        var canvas = r.data.canvases[i] = document.createElement('canvas'); // eslint-disable-line no-undef
        r.data.contexts[i] = canvas.getContext('2d');
        Object.keys(styleMap).forEach(function (k) {
          canvas.style[k] = styleMap[k];
        });
        canvas.style.position = 'absolute';
        canvas.setAttribute('data-id', 'layer' + i);
        canvas.style.zIndex = String(CRp.CANVAS_LAYERS - i);
        r.data.canvasContainer.appendChild(canvas);
        r.data.canvasNeedsRedraw[i] = false;
      }
      r.data.topCanvas = r.data.canvases[0];
      r.data.canvases[CRp.NODE].setAttribute('data-id', 'layer' + CRp.NODE + '-node');
      r.data.canvases[CRp.SELECT_BOX].setAttribute('data-id', 'layer' + CRp.SELECT_BOX + '-selectbox');
      r.data.canvases[CRp.DRAG].setAttribute('data-id', 'layer' + CRp.DRAG + '-drag');
      for (var i = 0; i < CRp.BUFFER_COUNT; i++) {
        r.data.bufferCanvases[i] = document.createElement('canvas'); // eslint-disable-line no-undef
        r.data.bufferContexts[i] = r.data.bufferCanvases[i].getContext('2d');
        r.data.bufferCanvases[i].style.position = 'absolute';
        r.data.bufferCanvases[i].setAttribute('data-id', 'buffer' + i);
        r.data.bufferCanvases[i].style.zIndex = String(-i - 1);
        r.data.bufferCanvases[i].style.visibility = 'hidden';
        //r.data.canvasContainer.appendChild(r.data.bufferCanvases[i]);
      }

      r.pathsEnabled = true;
      var emptyBb = makeBoundingBox();
      var getBoxCenter = function getBoxCenter(bb) {
        return {
          x: (bb.x1 + bb.x2) / 2,
          y: (bb.y1 + bb.y2) / 2
        };
      };
      var getCenterOffset = function getCenterOffset(bb) {
        return {
          x: -bb.w / 2,
          y: -bb.h / 2
        };
      };
      var backgroundTimestampHasChanged = function backgroundTimestampHasChanged(ele) {
        var _p = ele[0]._private;
        var same = _p.oldBackgroundTimestamp === _p.backgroundTimestamp;
        return !same;
      };
      var getStyleKey = function getStyleKey(ele) {
        return ele[0]._private.nodeKey;
      };
      var getLabelKey = function getLabelKey(ele) {
        return ele[0]._private.labelStyleKey;
      };
      var getSourceLabelKey = function getSourceLabelKey(ele) {
        return ele[0]._private.sourceLabelStyleKey;
      };
      var getTargetLabelKey = function getTargetLabelKey(ele) {
        return ele[0]._private.targetLabelStyleKey;
      };
      var drawElement = function drawElement(context, ele, bb, scaledLabelShown, useEleOpacity) {
        return r.drawElement(context, ele, bb, false, false, useEleOpacity);
      };
      var drawLabel = function drawLabel(context, ele, bb, scaledLabelShown, useEleOpacity) {
        return r.drawElementText(context, ele, bb, scaledLabelShown, 'main', useEleOpacity);
      };
      var drawSourceLabel = function drawSourceLabel(context, ele, bb, scaledLabelShown, useEleOpacity) {
        return r.drawElementText(context, ele, bb, scaledLabelShown, 'source', useEleOpacity);
      };
      var drawTargetLabel = function drawTargetLabel(context, ele, bb, scaledLabelShown, useEleOpacity) {
        return r.drawElementText(context, ele, bb, scaledLabelShown, 'target', useEleOpacity);
      };
      var getElementBox = function getElementBox(ele) {
        ele.boundingBox();
        return ele[0]._private.bodyBounds;
      };
      var getLabelBox = function getLabelBox(ele) {
        ele.boundingBox();
        return ele[0]._private.labelBounds.main || emptyBb;
      };
      var getSourceLabelBox = function getSourceLabelBox(ele) {
        ele.boundingBox();
        return ele[0]._private.labelBounds.source || emptyBb;
      };
      var getTargetLabelBox = function getTargetLabelBox(ele) {
        ele.boundingBox();
        return ele[0]._private.labelBounds.target || emptyBb;
      };
      var isLabelVisibleAtScale = function isLabelVisibleAtScale(ele, scaledLabelShown) {
        return scaledLabelShown;
      };
      var getElementRotationPoint = function getElementRotationPoint(ele) {
        return getBoxCenter(getElementBox(ele));
      };
      var addTextMargin = function addTextMargin(prefix, pt, ele) {
        var pre = prefix ? prefix + '-' : '';
        return {
          x: pt.x + ele.pstyle(pre + 'text-margin-x').pfValue,
          y: pt.y + ele.pstyle(pre + 'text-margin-y').pfValue
        };
      };
      var getRsPt = function getRsPt(ele, x, y) {
        var rs = ele[0]._private.rscratch;
        return {
          x: rs[x],
          y: rs[y]
        };
      };
      var getLabelRotationPoint = function getLabelRotationPoint(ele) {
        return addTextMargin('', getRsPt(ele, 'labelX', 'labelY'), ele);
      };
      var getSourceLabelRotationPoint = function getSourceLabelRotationPoint(ele) {
        return addTextMargin('source', getRsPt(ele, 'sourceLabelX', 'sourceLabelY'), ele);
      };
      var getTargetLabelRotationPoint = function getTargetLabelRotationPoint(ele) {
        return addTextMargin('target', getRsPt(ele, 'targetLabelX', 'targetLabelY'), ele);
      };
      var getElementRotationOffset = function getElementRotationOffset(ele) {
        return getCenterOffset(getElementBox(ele));
      };
      var getSourceLabelRotationOffset = function getSourceLabelRotationOffset(ele) {
        return getCenterOffset(getSourceLabelBox(ele));
      };
      var getTargetLabelRotationOffset = function getTargetLabelRotationOffset(ele) {
        return getCenterOffset(getTargetLabelBox(ele));
      };
      var getLabelRotationOffset = function getLabelRotationOffset(ele) {
        var bb = getLabelBox(ele);
        var p = getCenterOffset(getLabelBox(ele));
        if (ele.isNode()) {
          switch (ele.pstyle('text-halign').value) {
            case 'left':
              p.x = -bb.w;
              break;
            case 'right':
              p.x = 0;
              break;
          }
          switch (ele.pstyle('text-valign').value) {
            case 'top':
              p.y = -bb.h;
              break;
            case 'bottom':
              p.y = 0;
              break;
          }
        }
        return p;
      };
      var eleTxrCache = r.data.eleTxrCache = new ElementTextureCache(r, {
        getKey: getStyleKey,
        doesEleInvalidateKey: backgroundTimestampHasChanged,
        drawElement: drawElement,
        getBoundingBox: getElementBox,
        getRotationPoint: getElementRotationPoint,
        getRotationOffset: getElementRotationOffset,
        allowEdgeTxrCaching: false,
        allowParentTxrCaching: false
      });
      var lblTxrCache = r.data.lblTxrCache = new ElementTextureCache(r, {
        getKey: getLabelKey,
        drawElement: drawLabel,
        getBoundingBox: getLabelBox,
        getRotationPoint: getLabelRotationPoint,
        getRotationOffset: getLabelRotationOffset,
        isVisible: isLabelVisibleAtScale
      });
      var slbTxrCache = r.data.slbTxrCache = new ElementTextureCache(r, {
        getKey: getSourceLabelKey,
        drawElement: drawSourceLabel,
        getBoundingBox: getSourceLabelBox,
        getRotationPoint: getSourceLabelRotationPoint,
        getRotationOffset: getSourceLabelRotationOffset,
        isVisible: isLabelVisibleAtScale
      });
      var tlbTxrCache = r.data.tlbTxrCache = new ElementTextureCache(r, {
        getKey: getTargetLabelKey,
        drawElement: drawTargetLabel,
        getBoundingBox: getTargetLabelBox,
        getRotationPoint: getTargetLabelRotationPoint,
        getRotationOffset: getTargetLabelRotationOffset,
        isVisible: isLabelVisibleAtScale
      });
      var lyrTxrCache = r.data.lyrTxrCache = new LayeredTextureCache(r);
      r.onUpdateEleCalcs(function invalidateTextureCaches(willDraw, eles) {
        // each cache should check for sub-key diff to see that the update affects that cache particularly
        eleTxrCache.invalidateElements(eles);
        lblTxrCache.invalidateElements(eles);
        slbTxrCache.invalidateElements(eles);
        tlbTxrCache.invalidateElements(eles);

        // any change invalidates the layers
        lyrTxrCache.invalidateElements(eles);

        // update the old bg timestamp so diffs can be done in the ele txr caches
        for (var _i = 0; _i < eles.length; _i++) {
          var _p = eles[_i]._private;
          _p.oldBackgroundTimestamp = _p.backgroundTimestamp;
        }
      });
      var refineInLayers = function refineInLayers(reqs) {
        for (var i = 0; i < reqs.length; i++) {
          lyrTxrCache.enqueueElementRefinement(reqs[i].ele);
        }
      };
      eleTxrCache.onDequeue(refineInLayers);
      lblTxrCache.onDequeue(refineInLayers);
      slbTxrCache.onDequeue(refineInLayers);
      tlbTxrCache.onDequeue(refineInLayers);
    }
    CRp.redrawHint = function (group, bool) {
      var r = this;
      switch (group) {
        case 'eles':
          r.data.canvasNeedsRedraw[CRp.NODE] = bool;
          break;
        case 'drag':
          r.data.canvasNeedsRedraw[CRp.DRAG] = bool;
          break;
        case 'select':
          r.data.canvasNeedsRedraw[CRp.SELECT_BOX] = bool;
          break;
      }
    };

    // whether to use Path2D caching for drawing
    var pathsImpld = typeof Path2D !== 'undefined';
    CRp.path2dEnabled = function (on) {
      if (on === undefined) {
        return this.pathsEnabled;
      }
      this.pathsEnabled = on ? true : false;
    };
    CRp.usePaths = function () {
      return pathsImpld && this.pathsEnabled;
    };
    CRp.setImgSmoothing = function (context, bool) {
      if (context.imageSmoothingEnabled != null) {
        context.imageSmoothingEnabled = bool;
      } else {
        context.webkitImageSmoothingEnabled = bool;
        context.mozImageSmoothingEnabled = bool;
        context.msImageSmoothingEnabled = bool;
      }
    };
    CRp.getImgSmoothing = function (context) {
      if (context.imageSmoothingEnabled != null) {
        return context.imageSmoothingEnabled;
      } else {
        return context.webkitImageSmoothingEnabled || context.mozImageSmoothingEnabled || context.msImageSmoothingEnabled;
      }
    };
    CRp.makeOffscreenCanvas = function (width, height) {
      var canvas;
      if ((typeof OffscreenCanvas === "undefined" ? "undefined" : _typeof(OffscreenCanvas)) !== ("undefined" )) {
        canvas = new OffscreenCanvas(width, height);
      } else {
        canvas = document.createElement('canvas'); // eslint-disable-line no-undef
        canvas.width = width;
        canvas.height = height;
      }
      return canvas;
    };
    [CRp$a, CRp$9, CRp$8, CRp$7, CRp$6, CRp$5, CRp$4, CRp$3, CRp$2, CRp$1].forEach(function (props) {
      extend$1(CRp, props);
    });

    var renderer = [{
      name: 'null',
      impl: NullRenderer
    }, {
      name: 'base',
      impl: BR
    }, {
      name: 'canvas',
      impl: CR
    }];

    var incExts = [{
      type: 'layout',
      extensions: layout
    }, {
      type: 'renderer',
      extensions: renderer
    }];

    // registered extensions to cytoscape, indexed by name
    var extensions = {};

    // registered modules for extensions, indexed by name
    var modules = {};
    function setExtension(type, name, registrant) {
      var ext = registrant;
      var overrideErr = function overrideErr(field) {
        warn('Can not register `' + name + '` for `' + type + '` since `' + field + '` already exists in the prototype and can not be overridden');
      };
      if (type === 'core') {
        if (Core.prototype[name]) {
          return overrideErr(name);
        } else {
          Core.prototype[name] = registrant;
        }
      } else if (type === 'collection') {
        if (Collection.prototype[name]) {
          return overrideErr(name);
        } else {
          Collection.prototype[name] = registrant;
        }
      } else if (type === 'layout') {
        // fill in missing layout functions in the prototype

        var Layout = function Layout(options) {
          this.options = options;
          registrant.call(this, options);

          // make sure layout has _private for use w/ std apis like .on()
          if (!plainObject(this._private)) {
            this._private = {};
          }
          this._private.cy = options.cy;
          this._private.listeners = [];
          this.createEmitter();
        };
        var layoutProto = Layout.prototype = Object.create(registrant.prototype);
        var optLayoutFns = [];
        for (var i = 0; i < optLayoutFns.length; i++) {
          var fnName = optLayoutFns[i];
          layoutProto[fnName] = layoutProto[fnName] || function () {
            return this;
          };
        }

        // either .start() or .run() is defined, so autogen the other
        if (layoutProto.start && !layoutProto.run) {
          layoutProto.run = function () {
            this.start();
            return this;
          };
        } else if (!layoutProto.start && layoutProto.run) {
          layoutProto.start = function () {
            this.run();
            return this;
          };
        }
        var regStop = registrant.prototype.stop;
        layoutProto.stop = function () {
          var opts = this.options;
          if (opts && opts.animate) {
            var anis = this.animations;
            if (anis) {
              for (var _i = 0; _i < anis.length; _i++) {
                anis[_i].stop();
              }
            }
          }
          if (regStop) {
            regStop.call(this);
          } else {
            this.emit('layoutstop');
          }
          return this;
        };
        if (!layoutProto.destroy) {
          layoutProto.destroy = function () {
            return this;
          };
        }
        layoutProto.cy = function () {
          return this._private.cy;
        };
        var getCy = function getCy(layout) {
          return layout._private.cy;
        };
        var emitterOpts = {
          addEventFields: function addEventFields(layout, evt) {
            evt.layout = layout;
            evt.cy = getCy(layout);
            evt.target = layout;
          },
          bubble: function bubble() {
            return true;
          },
          parent: function parent(layout) {
            return getCy(layout);
          }
        };
        extend$1(layoutProto, {
          createEmitter: function createEmitter() {
            this._private.emitter = new Emitter(emitterOpts, this);
            return this;
          },
          emitter: function emitter() {
            return this._private.emitter;
          },
          on: function on(evt, cb) {
            this.emitter().on(evt, cb);
            return this;
          },
          one: function one(evt, cb) {
            this.emitter().one(evt, cb);
            return this;
          },
          once: function once(evt, cb) {
            this.emitter().one(evt, cb);
            return this;
          },
          removeListener: function removeListener(evt, cb) {
            this.emitter().removeListener(evt, cb);
            return this;
          },
          removeAllListeners: function removeAllListeners() {
            this.emitter().removeAllListeners();
            return this;
          },
          emit: function emit(evt, params) {
            this.emitter().emit(evt, params);
            return this;
          }
        });
        define.eventAliasesOn(layoutProto);
        ext = Layout; // replace with our wrapped layout
      } else if (type === 'renderer' && name !== 'null' && name !== 'base') {
        // user registered renderers inherit from base

        var BaseRenderer = getExtension('renderer', 'base');
        var bProto = BaseRenderer.prototype;
        var RegistrantRenderer = registrant;
        var rProto = registrant.prototype;
        var Renderer = function Renderer() {
          BaseRenderer.apply(this, arguments);
          RegistrantRenderer.apply(this, arguments);
        };
        var proto = Renderer.prototype;
        for (var pName in bProto) {
          var pVal = bProto[pName];
          var existsInR = rProto[pName] != null;
          if (existsInR) {
            return overrideErr(pName);
          }
          proto[pName] = pVal; // take impl from base
        }

        for (var _pName in rProto) {
          proto[_pName] = rProto[_pName]; // take impl from registrant
        }

        bProto.clientFunctions.forEach(function (name) {
          proto[name] = proto[name] || function () {
            error('Renderer does not implement `renderer.' + name + '()` on its prototype');
          };
        });
        ext = Renderer;
      } else if (type === '__proto__' || type === 'constructor' || type === 'prototype') {
        // to avoid potential prototype pollution
        return error(type + ' is an illegal type to be registered, possibly lead to prototype pollutions');
      }
      return setMap({
        map: extensions,
        keys: [type, name],
        value: ext
      });
    }
    function getExtension(type, name) {
      return getMap({
        map: extensions,
        keys: [type, name]
      });
    }
    function setModule(type, name, moduleType, moduleName, registrant) {
      return setMap({
        map: modules,
        keys: [type, name, moduleType, moduleName],
        value: registrant
      });
    }
    function getModule(type, name, moduleType, moduleName) {
      return getMap({
        map: modules,
        keys: [type, name, moduleType, moduleName]
      });
    }
    var extension = function extension() {
      // e.g. extension('renderer', 'svg')
      if (arguments.length === 2) {
        return getExtension.apply(null, arguments);
      }

      // e.g. extension('renderer', 'svg', { ... })
      else if (arguments.length === 3) {
        return setExtension.apply(null, arguments);
      }

      // e.g. extension('renderer', 'svg', 'nodeShape', 'ellipse')
      else if (arguments.length === 4) {
        return getModule.apply(null, arguments);
      }

      // e.g. extension('renderer', 'svg', 'nodeShape', 'ellipse', { ... })
      else if (arguments.length === 5) {
        return setModule.apply(null, arguments);
      } else {
        error('Invalid extension access syntax');
      }
    };

    // allows a core instance to access extensions internally
    Core.prototype.extension = extension;

    // included extensions
    incExts.forEach(function (group) {
      group.extensions.forEach(function (ext) {
        setExtension(group.type, ext.name, ext.impl);
      });
    });

    // a dummy stylesheet object that doesn't need a reference to the core
    // (useful for init)
    var Stylesheet = function Stylesheet() {
      if (!(this instanceof Stylesheet)) {
        return new Stylesheet();
      }
      this.length = 0;
    };
    var sheetfn = Stylesheet.prototype;
    sheetfn.instanceString = function () {
      return 'stylesheet';
    };

    // just store the selector to be parsed later
    sheetfn.selector = function (selector) {
      var i = this.length++;
      this[i] = {
        selector: selector,
        properties: []
      };
      return this; // chaining
    };

    // just store the property to be parsed later
    sheetfn.css = function (name, value) {
      var i = this.length - 1;
      if (string(name)) {
        this[i].properties.push({
          name: name,
          value: value
        });
      } else if (plainObject(name)) {
        var map = name;
        var propNames = Object.keys(map);
        for (var j = 0; j < propNames.length; j++) {
          var key = propNames[j];
          var mapVal = map[key];
          if (mapVal == null) {
            continue;
          }
          var prop = Style.properties[key] || Style.properties[dash2camel(key)];
          if (prop == null) {
            continue;
          }
          var _name = prop.name;
          var _value = mapVal;
          this[i].properties.push({
            name: _name,
            value: _value
          });
        }
      }
      return this; // chaining
    };

    sheetfn.style = sheetfn.css;

    // generate a real style object from the dummy stylesheet
    sheetfn.generateStyle = function (cy) {
      var style = new Style(cy);
      return this.appendToStyle(style);
    };

    // append a dummy stylesheet object on a real style object
    sheetfn.appendToStyle = function (style) {
      for (var i = 0; i < this.length; i++) {
        var context = this[i];
        var selector = context.selector;
        var props = context.properties;
        style.selector(selector); // apply selector

        for (var j = 0; j < props.length; j++) {
          var prop = props[j];
          style.css(prop.name, prop.value); // apply property
        }
      }

      return style;
    };

    var version = "3.29.2";

    var cytoscape = function cytoscape(options) {
      // if no options specified, use default
      if (options === undefined) {
        options = {};
      }

      // create instance
      if (plainObject(options)) {
        return new Core(options);
      }

      // allow for registration of extensions
      else if (string(options)) {
        return extension.apply(extension, arguments);
      }
    };

    // e.g. cytoscape.use( require('cytoscape-foo'), bar )
    cytoscape.use = function (ext) {
      var args = Array.prototype.slice.call(arguments, 1); // args to pass to ext

      args.unshift(cytoscape); // cytoscape is first arg to ext

      ext.apply(null, args);
      return this;
    };
    cytoscape.warnings = function (bool) {
      return warnings(bool);
    };

    // replaced by build system
    cytoscape.version = version;

    // expose public apis (mostly for extensions)
    cytoscape.stylesheet = cytoscape.Stylesheet = Stylesheet;

    var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};

    function getDefaultExportFromCjs (x) {
    	return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
    }

    function commonjsRequire(path) {
    	throw new Error('Could not dynamically require "' + path + '". Please configure the dynamicRequireTargets or/and ignoreDynamicRequires option of @rollup/plugin-commonjs appropriately for this require call to work.');
    }

    var jszip_min = {exports: {}};

    /*!

    JSZip v3.10.1 - A JavaScript class for generating and reading zip files
    <http://stuartk.com/jszip>

    (c) 2009-2016 Stuart Knightley <stuart [at] stuartk.com>
    Dual licenced under the MIT license or GPLv3. See https://raw.github.com/Stuk/jszip/main/LICENSE.markdown.

    JSZip uses the library pako released under the MIT license :
    https://github.com/nodeca/pako/blob/main/LICENSE
    */

    (function (module, exports) {
    	!function(e){module.exports=e();}(function(){return function s(a,o,h){function u(r,e){if(!o[r]){if(!a[r]){var t="function"==typeof commonjsRequire&&commonjsRequire;if(!e&&t)return t(r,!0);if(l)return l(r,!0);var n=new Error("Cannot find module '"+r+"'");throw n.code="MODULE_NOT_FOUND",n}var i=o[r]={exports:{}};a[r][0].call(i.exports,function(e){var t=a[r][1][e];return u(t||e)},i,i.exports,s,a,o,h);}return o[r].exports}for(var l="function"==typeof commonjsRequire&&commonjsRequire,e=0;e<h.length;e++)u(h[e]);return u}({1:[function(e,t,r){var d=e("./utils"),c=e("./support"),p="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";r.encode=function(e){for(var t,r,n,i,s,a,o,h=[],u=0,l=e.length,f=l,c="string"!==d.getTypeOf(e);u<e.length;)f=l-u,n=c?(t=e[u++],r=u<l?e[u++]:0,u<l?e[u++]:0):(t=e.charCodeAt(u++),r=u<l?e.charCodeAt(u++):0,u<l?e.charCodeAt(u++):0),i=t>>2,s=(3&t)<<4|r>>4,a=1<f?(15&r)<<2|n>>6:64,o=2<f?63&n:64,h.push(p.charAt(i)+p.charAt(s)+p.charAt(a)+p.charAt(o));return h.join("")},r.decode=function(e){var t,r,n,i,s,a,o=0,h=0,u="data:";if(e.substr(0,u.length)===u)throw new Error("Invalid base64 input, it looks like a data url.");var l,f=3*(e=e.replace(/[^A-Za-z0-9+/=]/g,"")).length/4;if(e.charAt(e.length-1)===p.charAt(64)&&f--,e.charAt(e.length-2)===p.charAt(64)&&f--,f%1!=0)throw new Error("Invalid base64 input, bad content length.");for(l=c.uint8array?new Uint8Array(0|f):new Array(0|f);o<e.length;)t=p.indexOf(e.charAt(o++))<<2|(i=p.indexOf(e.charAt(o++)))>>4,r=(15&i)<<4|(s=p.indexOf(e.charAt(o++)))>>2,n=(3&s)<<6|(a=p.indexOf(e.charAt(o++))),l[h++]=t,64!==s&&(l[h++]=r),64!==a&&(l[h++]=n);return l};},{"./support":30,"./utils":32}],2:[function(e,t,r){var n=e("./external"),i=e("./stream/DataWorker"),s=e("./stream/Crc32Probe"),a=e("./stream/DataLengthProbe");function o(e,t,r,n,i){this.compressedSize=e,this.uncompressedSize=t,this.crc32=r,this.compression=n,this.compressedContent=i;}o.prototype={getContentWorker:function(){var e=new i(n.Promise.resolve(this.compressedContent)).pipe(this.compression.uncompressWorker()).pipe(new a("data_length")),t=this;return e.on("end",function(){if(this.streamInfo.data_length!==t.uncompressedSize)throw new Error("Bug : uncompressed data size mismatch")}),e},getCompressedWorker:function(){return new i(n.Promise.resolve(this.compressedContent)).withStreamInfo("compressedSize",this.compressedSize).withStreamInfo("uncompressedSize",this.uncompressedSize).withStreamInfo("crc32",this.crc32).withStreamInfo("compression",this.compression)}},o.createWorkerFrom=function(e,t,r){return e.pipe(new s).pipe(new a("uncompressedSize")).pipe(t.compressWorker(r)).pipe(new a("compressedSize")).withStreamInfo("compression",t)},t.exports=o;},{"./external":6,"./stream/Crc32Probe":25,"./stream/DataLengthProbe":26,"./stream/DataWorker":27}],3:[function(e,t,r){var n=e("./stream/GenericWorker");r.STORE={magic:"\0\0",compressWorker:function(){return new n("STORE compression")},uncompressWorker:function(){return new n("STORE decompression")}},r.DEFLATE=e("./flate");},{"./flate":7,"./stream/GenericWorker":28}],4:[function(e,t,r){var n=e("./utils");var o=function(){for(var e,t=[],r=0;r<256;r++){e=r;for(var n=0;n<8;n++)e=1&e?3988292384^e>>>1:e>>>1;t[r]=e;}return t}();t.exports=function(e,t){return void 0!==e&&e.length?"string"!==n.getTypeOf(e)?function(e,t,r,n){var i=o,s=n+r;e^=-1;for(var a=n;a<s;a++)e=e>>>8^i[255&(e^t[a])];return -1^e}(0|t,e,e.length,0):function(e,t,r,n){var i=o,s=n+r;e^=-1;for(var a=n;a<s;a++)e=e>>>8^i[255&(e^t.charCodeAt(a))];return -1^e}(0|t,e,e.length,0):0};},{"./utils":32}],5:[function(e,t,r){r.base64=!1,r.binary=!1,r.dir=!1,r.createFolders=!0,r.date=null,r.compression=null,r.compressionOptions=null,r.comment=null,r.unixPermissions=null,r.dosPermissions=null;},{}],6:[function(e,t,r){var n=null;n="undefined"!=typeof Promise?Promise:e("lie"),t.exports={Promise:n};},{lie:37}],7:[function(e,t,r){var n="undefined"!=typeof Uint8Array&&"undefined"!=typeof Uint16Array&&"undefined"!=typeof Uint32Array,i=e("pako"),s=e("./utils"),a=e("./stream/GenericWorker"),o=n?"uint8array":"array";function h(e,t){a.call(this,"FlateWorker/"+e),this._pako=null,this._pakoAction=e,this._pakoOptions=t,this.meta={};}r.magic="\b\0",s.inherits(h,a),h.prototype.processChunk=function(e){this.meta=e.meta,null===this._pako&&this._createPako(),this._pako.push(s.transformTo(o,e.data),!1);},h.prototype.flush=function(){a.prototype.flush.call(this),null===this._pako&&this._createPako(),this._pako.push([],!0);},h.prototype.cleanUp=function(){a.prototype.cleanUp.call(this),this._pako=null;},h.prototype._createPako=function(){this._pako=new i[this._pakoAction]({raw:!0,level:this._pakoOptions.level||-1});var t=this;this._pako.onData=function(e){t.push({data:e,meta:t.meta});};},r.compressWorker=function(e){return new h("Deflate",e)},r.uncompressWorker=function(){return new h("Inflate",{})};},{"./stream/GenericWorker":28,"./utils":32,pako:38}],8:[function(e,t,r){function A(e,t){var r,n="";for(r=0;r<t;r++)n+=String.fromCharCode(255&e),e>>>=8;return n}function n(e,t,r,n,i,s){var a,o,h=e.file,u=e.compression,l=s!==O.utf8encode,f=I.transformTo("string",s(h.name)),c=I.transformTo("string",O.utf8encode(h.name)),d=h.comment,p=I.transformTo("string",s(d)),m=I.transformTo("string",O.utf8encode(d)),_=c.length!==h.name.length,g=m.length!==d.length,b="",v="",y="",w=h.dir,k=h.date,x={crc32:0,compressedSize:0,uncompressedSize:0};t&&!r||(x.crc32=e.crc32,x.compressedSize=e.compressedSize,x.uncompressedSize=e.uncompressedSize);var S=0;t&&(S|=8),l||!_&&!g||(S|=2048);var z=0,C=0;w&&(z|=16),"UNIX"===i?(C=798,z|=function(e,t){var r=e;return e||(r=t?16893:33204),(65535&r)<<16}(h.unixPermissions,w)):(C=20,z|=function(e){return 63&(e||0)}(h.dosPermissions)),a=k.getUTCHours(),a<<=6,a|=k.getUTCMinutes(),a<<=5,a|=k.getUTCSeconds()/2,o=k.getUTCFullYear()-1980,o<<=4,o|=k.getUTCMonth()+1,o<<=5,o|=k.getUTCDate(),_&&(v=A(1,1)+A(B(f),4)+c,b+="up"+A(v.length,2)+v),g&&(y=A(1,1)+A(B(p),4)+m,b+="uc"+A(y.length,2)+y);var E="";return E+="\n\0",E+=A(S,2),E+=u.magic,E+=A(a,2),E+=A(o,2),E+=A(x.crc32,4),E+=A(x.compressedSize,4),E+=A(x.uncompressedSize,4),E+=A(f.length,2),E+=A(b.length,2),{fileRecord:R.LOCAL_FILE_HEADER+E+f+b,dirRecord:R.CENTRAL_FILE_HEADER+A(C,2)+E+A(p.length,2)+"\0\0\0\0"+A(z,4)+A(n,4)+f+b+p}}var I=e("../utils"),i=e("../stream/GenericWorker"),O=e("../utf8"),B=e("../crc32"),R=e("../signature");function s(e,t,r,n){i.call(this,"ZipFileWorker"),this.bytesWritten=0,this.zipComment=t,this.zipPlatform=r,this.encodeFileName=n,this.streamFiles=e,this.accumulate=!1,this.contentBuffer=[],this.dirRecords=[],this.currentSourceOffset=0,this.entriesCount=0,this.currentFile=null,this._sources=[];}I.inherits(s,i),s.prototype.push=function(e){var t=e.meta.percent||0,r=this.entriesCount,n=this._sources.length;this.accumulate?this.contentBuffer.push(e):(this.bytesWritten+=e.data.length,i.prototype.push.call(this,{data:e.data,meta:{currentFile:this.currentFile,percent:r?(t+100*(r-n-1))/r:100}}));},s.prototype.openedSource=function(e){this.currentSourceOffset=this.bytesWritten,this.currentFile=e.file.name;var t=this.streamFiles&&!e.file.dir;if(t){var r=n(e,t,!1,this.currentSourceOffset,this.zipPlatform,this.encodeFileName);this.push({data:r.fileRecord,meta:{percent:0}});}else this.accumulate=!0;},s.prototype.closedSource=function(e){this.accumulate=!1;var t=this.streamFiles&&!e.file.dir,r=n(e,t,!0,this.currentSourceOffset,this.zipPlatform,this.encodeFileName);if(this.dirRecords.push(r.dirRecord),t)this.push({data:function(e){return R.DATA_DESCRIPTOR+A(e.crc32,4)+A(e.compressedSize,4)+A(e.uncompressedSize,4)}(e),meta:{percent:100}});else for(this.push({data:r.fileRecord,meta:{percent:0}});this.contentBuffer.length;)this.push(this.contentBuffer.shift());this.currentFile=null;},s.prototype.flush=function(){for(var e=this.bytesWritten,t=0;t<this.dirRecords.length;t++)this.push({data:this.dirRecords[t],meta:{percent:100}});var r=this.bytesWritten-e,n=function(e,t,r,n,i){var s=I.transformTo("string",i(n));return R.CENTRAL_DIRECTORY_END+"\0\0\0\0"+A(e,2)+A(e,2)+A(t,4)+A(r,4)+A(s.length,2)+s}(this.dirRecords.length,r,e,this.zipComment,this.encodeFileName);this.push({data:n,meta:{percent:100}});},s.prototype.prepareNextSource=function(){this.previous=this._sources.shift(),this.openedSource(this.previous.streamInfo),this.isPaused?this.previous.pause():this.previous.resume();},s.prototype.registerPrevious=function(e){this._sources.push(e);var t=this;return e.on("data",function(e){t.processChunk(e);}),e.on("end",function(){t.closedSource(t.previous.streamInfo),t._sources.length?t.prepareNextSource():t.end();}),e.on("error",function(e){t.error(e);}),this},s.prototype.resume=function(){return !!i.prototype.resume.call(this)&&(!this.previous&&this._sources.length?(this.prepareNextSource(),!0):this.previous||this._sources.length||this.generatedError?void 0:(this.end(),!0))},s.prototype.error=function(e){var t=this._sources;if(!i.prototype.error.call(this,e))return !1;for(var r=0;r<t.length;r++)try{t[r].error(e);}catch(e){}return !0},s.prototype.lock=function(){i.prototype.lock.call(this);for(var e=this._sources,t=0;t<e.length;t++)e[t].lock();},t.exports=s;},{"../crc32":4,"../signature":23,"../stream/GenericWorker":28,"../utf8":31,"../utils":32}],9:[function(e,t,r){var u=e("../compressions"),n=e("./ZipFileWorker");r.generateWorker=function(e,a,t){var o=new n(a.streamFiles,t,a.platform,a.encodeFileName),h=0;try{e.forEach(function(e,t){h++;var r=function(e,t){var r=e||t,n=u[r];if(!n)throw new Error(r+" is not a valid compression method !");return n}(t.options.compression,a.compression),n=t.options.compressionOptions||a.compressionOptions||{},i=t.dir,s=t.date;t._compressWorker(r,n).withStreamInfo("file",{name:e,dir:i,date:s,comment:t.comment||"",unixPermissions:t.unixPermissions,dosPermissions:t.dosPermissions}).pipe(o);}),o.entriesCount=h;}catch(e){o.error(e);}return o};},{"../compressions":3,"./ZipFileWorker":8}],10:[function(e,t,r){function n(){if(!(this instanceof n))return new n;if(arguments.length)throw new Error("The constructor with parameters has been removed in JSZip 3.0, please check the upgrade guide.");this.files=Object.create(null),this.comment=null,this.root="",this.clone=function(){var e=new n;for(var t in this)"function"!=typeof this[t]&&(e[t]=this[t]);return e};}(n.prototype=e("./object")).loadAsync=e("./load"),n.support=e("./support"),n.defaults=e("./defaults"),n.version="3.10.1",n.loadAsync=function(e,t){return (new n).loadAsync(e,t)},n.external=e("./external"),t.exports=n;},{"./defaults":5,"./external":6,"./load":11,"./object":15,"./support":30}],11:[function(e,t,r){var u=e("./utils"),i=e("./external"),n=e("./utf8"),s=e("./zipEntries"),a=e("./stream/Crc32Probe"),l=e("./nodejsUtils");function f(n){return new i.Promise(function(e,t){var r=n.decompressed.getContentWorker().pipe(new a);r.on("error",function(e){t(e);}).on("end",function(){r.streamInfo.crc32!==n.decompressed.crc32?t(new Error("Corrupted zip : CRC32 mismatch")):e();}).resume();})}t.exports=function(e,o){var h=this;return o=u.extend(o||{},{base64:!1,checkCRC32:!1,optimizedBinaryString:!1,createFolders:!1,decodeFileName:n.utf8decode}),l.isNode&&l.isStream(e)?i.Promise.reject(new Error("JSZip can't accept a stream when loading a zip file.")):u.prepareContent("the loaded zip file",e,!0,o.optimizedBinaryString,o.base64).then(function(e){var t=new s(o);return t.load(e),t}).then(function(e){var t=[i.Promise.resolve(e)],r=e.files;if(o.checkCRC32)for(var n=0;n<r.length;n++)t.push(f(r[n]));return i.Promise.all(t)}).then(function(e){for(var t=e.shift(),r=t.files,n=0;n<r.length;n++){var i=r[n],s=i.fileNameStr,a=u.resolve(i.fileNameStr);h.file(a,i.decompressed,{binary:!0,optimizedBinaryString:!0,date:i.date,dir:i.dir,comment:i.fileCommentStr.length?i.fileCommentStr:null,unixPermissions:i.unixPermissions,dosPermissions:i.dosPermissions,createFolders:o.createFolders}),i.dir||(h.file(a).unsafeOriginalName=s);}return t.zipComment.length&&(h.comment=t.zipComment),h})};},{"./external":6,"./nodejsUtils":14,"./stream/Crc32Probe":25,"./utf8":31,"./utils":32,"./zipEntries":33}],12:[function(e,t,r){var n=e("../utils"),i=e("../stream/GenericWorker");function s(e,t){i.call(this,"Nodejs stream input adapter for "+e),this._upstreamEnded=!1,this._bindStream(t);}n.inherits(s,i),s.prototype._bindStream=function(e){var t=this;(this._stream=e).pause(),e.on("data",function(e){t.push({data:e,meta:{percent:0}});}).on("error",function(e){t.isPaused?this.generatedError=e:t.error(e);}).on("end",function(){t.isPaused?t._upstreamEnded=!0:t.end();});},s.prototype.pause=function(){return !!i.prototype.pause.call(this)&&(this._stream.pause(),!0)},s.prototype.resume=function(){return !!i.prototype.resume.call(this)&&(this._upstreamEnded?this.end():this._stream.resume(),!0)},t.exports=s;},{"../stream/GenericWorker":28,"../utils":32}],13:[function(e,t,r){var i=e("readable-stream").Readable;function n(e,t,r){i.call(this,t),this._helper=e;var n=this;e.on("data",function(e,t){n.push(e)||n._helper.pause(),r&&r(t);}).on("error",function(e){n.emit("error",e);}).on("end",function(){n.push(null);});}e("../utils").inherits(n,i),n.prototype._read=function(){this._helper.resume();},t.exports=n;},{"../utils":32,"readable-stream":16}],14:[function(e,t,r){t.exports={isNode:"undefined"!=typeof Buffer,newBufferFrom:function(e,t){if(Buffer.from&&Buffer.from!==Uint8Array.from)return Buffer.from(e,t);if("number"==typeof e)throw new Error('The "data" argument must not be a number');return new Buffer(e,t)},allocBuffer:function(e){if(Buffer.alloc)return Buffer.alloc(e);var t=new Buffer(e);return t.fill(0),t},isBuffer:function(e){return Buffer.isBuffer(e)},isStream:function(e){return e&&"function"==typeof e.on&&"function"==typeof e.pause&&"function"==typeof e.resume}};},{}],15:[function(e,t,r){function s(e,t,r){var n,i=u.getTypeOf(t),s=u.extend(r||{},f);s.date=s.date||new Date,null!==s.compression&&(s.compression=s.compression.toUpperCase()),"string"==typeof s.unixPermissions&&(s.unixPermissions=parseInt(s.unixPermissions,8)),s.unixPermissions&&16384&s.unixPermissions&&(s.dir=!0),s.dosPermissions&&16&s.dosPermissions&&(s.dir=!0),s.dir&&(e=g(e)),s.createFolders&&(n=_(e))&&b.call(this,n,!0);var a="string"===i&&!1===s.binary&&!1===s.base64;r&&void 0!==r.binary||(s.binary=!a),(t instanceof c&&0===t.uncompressedSize||s.dir||!t||0===t.length)&&(s.base64=!1,s.binary=!0,t="",s.compression="STORE",i="string");var o=null;o=t instanceof c||t instanceof l?t:p.isNode&&p.isStream(t)?new m(e,t):u.prepareContent(e,t,s.binary,s.optimizedBinaryString,s.base64);var h=new d(e,o,s);this.files[e]=h;}var i=e("./utf8"),u=e("./utils"),l=e("./stream/GenericWorker"),a=e("./stream/StreamHelper"),f=e("./defaults"),c=e("./compressedObject"),d=e("./zipObject"),o=e("./generate"),p=e("./nodejsUtils"),m=e("./nodejs/NodejsStreamInputAdapter"),_=function(e){"/"===e.slice(-1)&&(e=e.substring(0,e.length-1));var t=e.lastIndexOf("/");return 0<t?e.substring(0,t):""},g=function(e){return "/"!==e.slice(-1)&&(e+="/"),e},b=function(e,t){return t=void 0!==t?t:f.createFolders,e=g(e),this.files[e]||s.call(this,e,null,{dir:!0,createFolders:t}),this.files[e]};function h(e){return "[object RegExp]"===Object.prototype.toString.call(e)}var n={load:function(){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.")},forEach:function(e){var t,r,n;for(t in this.files)n=this.files[t],(r=t.slice(this.root.length,t.length))&&t.slice(0,this.root.length)===this.root&&e(r,n);},filter:function(r){var n=[];return this.forEach(function(e,t){r(e,t)&&n.push(t);}),n},file:function(e,t,r){if(1!==arguments.length)return e=this.root+e,s.call(this,e,t,r),this;if(h(e)){var n=e;return this.filter(function(e,t){return !t.dir&&n.test(e)})}var i=this.files[this.root+e];return i&&!i.dir?i:null},folder:function(r){if(!r)return this;if(h(r))return this.filter(function(e,t){return t.dir&&r.test(e)});var e=this.root+r,t=b.call(this,e),n=this.clone();return n.root=t.name,n},remove:function(r){r=this.root+r;var e=this.files[r];if(e||("/"!==r.slice(-1)&&(r+="/"),e=this.files[r]),e&&!e.dir)delete this.files[r];else for(var t=this.filter(function(e,t){return t.name.slice(0,r.length)===r}),n=0;n<t.length;n++)delete this.files[t[n].name];return this},generate:function(){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.")},generateInternalStream:function(e){var t,r={};try{if((r=u.extend(e||{},{streamFiles:!1,compression:"STORE",compressionOptions:null,type:"",platform:"DOS",comment:null,mimeType:"application/zip",encodeFileName:i.utf8encode})).type=r.type.toLowerCase(),r.compression=r.compression.toUpperCase(),"binarystring"===r.type&&(r.type="string"),!r.type)throw new Error("No output type specified.");u.checkSupport(r.type),"darwin"!==r.platform&&"freebsd"!==r.platform&&"linux"!==r.platform&&"sunos"!==r.platform||(r.platform="UNIX"),"win32"===r.platform&&(r.platform="DOS");var n=r.comment||this.comment||"";t=o.generateWorker(this,r,n);}catch(e){(t=new l("error")).error(e);}return new a(t,r.type||"string",r.mimeType)},generateAsync:function(e,t){return this.generateInternalStream(e).accumulate(t)},generateNodeStream:function(e,t){return (e=e||{}).type||(e.type="nodebuffer"),this.generateInternalStream(e).toNodejsStream(t)}};t.exports=n;},{"./compressedObject":2,"./defaults":5,"./generate":9,"./nodejs/NodejsStreamInputAdapter":12,"./nodejsUtils":14,"./stream/GenericWorker":28,"./stream/StreamHelper":29,"./utf8":31,"./utils":32,"./zipObject":35}],16:[function(e,t,r){t.exports=e("stream");},{stream:void 0}],17:[function(e,t,r){var n=e("./DataReader");function i(e){n.call(this,e);for(var t=0;t<this.data.length;t++)e[t]=255&e[t];}e("../utils").inherits(i,n),i.prototype.byteAt=function(e){return this.data[this.zero+e]},i.prototype.lastIndexOfSignature=function(e){for(var t=e.charCodeAt(0),r=e.charCodeAt(1),n=e.charCodeAt(2),i=e.charCodeAt(3),s=this.length-4;0<=s;--s)if(this.data[s]===t&&this.data[s+1]===r&&this.data[s+2]===n&&this.data[s+3]===i)return s-this.zero;return -1},i.prototype.readAndCheckSignature=function(e){var t=e.charCodeAt(0),r=e.charCodeAt(1),n=e.charCodeAt(2),i=e.charCodeAt(3),s=this.readData(4);return t===s[0]&&r===s[1]&&n===s[2]&&i===s[3]},i.prototype.readData=function(e){if(this.checkOffset(e),0===e)return [];var t=this.data.slice(this.zero+this.index,this.zero+this.index+e);return this.index+=e,t},t.exports=i;},{"../utils":32,"./DataReader":18}],18:[function(e,t,r){var n=e("../utils");function i(e){this.data=e,this.length=e.length,this.index=0,this.zero=0;}i.prototype={checkOffset:function(e){this.checkIndex(this.index+e);},checkIndex:function(e){if(this.length<this.zero+e||e<0)throw new Error("End of data reached (data length = "+this.length+", asked index = "+e+"). Corrupted zip ?")},setIndex:function(e){this.checkIndex(e),this.index=e;},skip:function(e){this.setIndex(this.index+e);},byteAt:function(){},readInt:function(e){var t,r=0;for(this.checkOffset(e),t=this.index+e-1;t>=this.index;t--)r=(r<<8)+this.byteAt(t);return this.index+=e,r},readString:function(e){return n.transformTo("string",this.readData(e))},readData:function(){},lastIndexOfSignature:function(){},readAndCheckSignature:function(){},readDate:function(){var e=this.readInt(4);return new Date(Date.UTC(1980+(e>>25&127),(e>>21&15)-1,e>>16&31,e>>11&31,e>>5&63,(31&e)<<1))}},t.exports=i;},{"../utils":32}],19:[function(e,t,r){var n=e("./Uint8ArrayReader");function i(e){n.call(this,e);}e("../utils").inherits(i,n),i.prototype.readData=function(e){this.checkOffset(e);var t=this.data.slice(this.zero+this.index,this.zero+this.index+e);return this.index+=e,t},t.exports=i;},{"../utils":32,"./Uint8ArrayReader":21}],20:[function(e,t,r){var n=e("./DataReader");function i(e){n.call(this,e);}e("../utils").inherits(i,n),i.prototype.byteAt=function(e){return this.data.charCodeAt(this.zero+e)},i.prototype.lastIndexOfSignature=function(e){return this.data.lastIndexOf(e)-this.zero},i.prototype.readAndCheckSignature=function(e){return e===this.readData(4)},i.prototype.readData=function(e){this.checkOffset(e);var t=this.data.slice(this.zero+this.index,this.zero+this.index+e);return this.index+=e,t},t.exports=i;},{"../utils":32,"./DataReader":18}],21:[function(e,t,r){var n=e("./ArrayReader");function i(e){n.call(this,e);}e("../utils").inherits(i,n),i.prototype.readData=function(e){if(this.checkOffset(e),0===e)return new Uint8Array(0);var t=this.data.subarray(this.zero+this.index,this.zero+this.index+e);return this.index+=e,t},t.exports=i;},{"../utils":32,"./ArrayReader":17}],22:[function(e,t,r){var n=e("../utils"),i=e("../support"),s=e("./ArrayReader"),a=e("./StringReader"),o=e("./NodeBufferReader"),h=e("./Uint8ArrayReader");t.exports=function(e){var t=n.getTypeOf(e);return n.checkSupport(t),"string"!==t||i.uint8array?"nodebuffer"===t?new o(e):i.uint8array?new h(n.transformTo("uint8array",e)):new s(n.transformTo("array",e)):new a(e)};},{"../support":30,"../utils":32,"./ArrayReader":17,"./NodeBufferReader":19,"./StringReader":20,"./Uint8ArrayReader":21}],23:[function(e,t,r){r.LOCAL_FILE_HEADER="PK",r.CENTRAL_FILE_HEADER="PK
",r.CENTRAL_DIRECTORY_END="PK",r.ZIP64_CENTRAL_DIRECTORY_LOCATOR="PK",r.ZIP64_CENTRAL_DIRECTORY_END="PK",r.DATA_DESCRIPTOR="PK\b";},{}],24:[function(e,t,r){var n=e("./GenericWorker"),i=e("../utils");function s(e){n.call(this,"ConvertWorker to "+e),this.destType=e;}i.inherits(s,n),s.prototype.processChunk=function(e){this.push({data:i.transformTo(this.destType,e.data),meta:e.meta});},t.exports=s;},{"../utils":32,"./GenericWorker":28}],25:[function(e,t,r){var n=e("./GenericWorker"),i=e("../crc32");function s(){n.call(this,"Crc32Probe"),this.withStreamInfo("crc32",0);}e("../utils").inherits(s,n),s.prototype.processChunk=function(e){this.streamInfo.crc32=i(e.data,this.streamInfo.crc32||0),this.push(e);},t.exports=s;},{"../crc32":4,"../utils":32,"./GenericWorker":28}],26:[function(e,t,r){var n=e("../utils"),i=e("./GenericWorker");function s(e){i.call(this,"DataLengthProbe for "+e),this.propName=e,this.withStreamInfo(e,0);}n.inherits(s,i),s.prototype.processChunk=function(e){if(e){var t=this.streamInfo[this.propName]||0;this.streamInfo[this.propName]=t+e.data.length;}i.prototype.processChunk.call(this,e);},t.exports=s;},{"../utils":32,"./GenericWorker":28}],27:[function(e,t,r){var n=e("../utils"),i=e("./GenericWorker");function s(e){i.call(this,"DataWorker");var t=this;this.dataIsReady=!1,this.index=0,this.max=0,this.data=null,this.type="",this._tickScheduled=!1,e.then(function(e){t.dataIsReady=!0,t.data=e,t.max=e&&e.length||0,t.type=n.getTypeOf(e),t.isPaused||t._tickAndRepeat();},function(e){t.error(e);});}n.inherits(s,i),s.prototype.cleanUp=function(){i.prototype.cleanUp.call(this),this.data=null;},s.prototype.resume=function(){return 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n(e){this.name=e||"default",this.streamInfo={},this.generatedError=null,this.extraStreamInfo={},this.isPaused=!0,this.isFinished=!1,this.isLocked=!1,this._listeners={data:[],end:[],error:[]},this.previous=null;}n.prototype={push:function(e){this.emit("data",e);},end:function(){if(this.isFinished)return !1;this.flush();try{this.emit("end"),this.cleanUp(),this.isFinished=!0;}catch(e){this.emit("error",e);}return !0},error:function(e){return !this.isFinished&&(this.isPaused?this.generatedError=e:(this.isFinished=!0,this.emit("error",e),this.previous&&this.previous.error(e),this.cleanUp()),!0)},on:function(e,t){return this._listeners[e].push(t),this},cleanUp:function(){this.streamInfo=this.generatedError=this.extraStreamInfo=null,this._listeners=[];},emit:function(e,t){if(this._listeners[e])for(var r=0;r<this._listeners[e].length;r++)this._listeners[e][r].call(this,t);},pipe:function(e){return e.registerPrevious(this)},registerPrevious:function(e){if(this.isLocked)throw new Error("The stream '"+this+"' has already been used.");this.streamInfo=e.streamInfo,this.mergeStreamInfo(),this.previous=e;var t=this;return e.on("data",function(e){t.processChunk(e);}),e.on("end",function(){t.end();}),e.on("error",function(e){t.error(e);}),this},pause:function(){return !this.isPaused&&!this.isFinished&&(this.isPaused=!0,this.previous&&this.previous.pause(),!0)},resume:function(){if(!this.isPaused||this.isFinished)return !1;var e=this.isPaused=!1;return this.generatedError&&(this.error(this.generatedError),e=!0),this.previous&&this.previous.resume(),!e},flush:function(){},processChunk:function(e){this.push(e);},withStreamInfo:function(e,t){return this.extraStreamInfo[e]=t,this.mergeStreamInfo(),this},mergeStreamInfo:function(){for(var e in this.extraStreamInfo)Object.prototype.hasOwnProperty.call(this.extraStreamInfo,e)&&(this.streamInfo[e]=this.extraStreamInfo[e]);},lock:function(){if(this.isLocked)throw new Error("The stream '"+this+"' has already been used.");this.isLocked=!0,this.previous&&this.previous.lock();},toString:function(){var e="Worker "+this.name;return this.previous?this.previous+" -> "+e:e}},t.exports=n;},{}],29:[function(e,t,r){var h=e("../utils"),i=e("./ConvertWorker"),s=e("./GenericWorker"),u=e("../base64"),n=e("../support"),a=e("../external"),o=null;if(n.nodestream)try{o=e("../nodejs/NodejsStreamOutputAdapter");}catch(e){}function l(e,o){return new a.Promise(function(t,r){var n=[],i=e._internalType,s=e._outputType,a=e._mimeType;e.on("data",function(e,t){n.push(e),o&&o(t);}).on("error",function(e){n=[],r(e);}).on("end",function(){try{var e=function(e,t,r){switch(e){case"blob":return h.newBlob(h.transformTo("arraybuffer",t),r);case"base64":return u.encode(t);default:return h.transformTo(e,t)}}(s,function(e,t){var r,n=0,i=null,s=0;for(r=0;r<t.length;r++)s+=t[r].length;switch(e){case"string":return t.join("");case"array":return Array.prototype.concat.apply([],t);case"uint8array":for(i=new Uint8Array(s),r=0;r<t.length;r++)i.set(t[r],n),n+=t[r].length;return i;case"nodebuffer":return Buffer.concat(t);default:throw new Error("concat : unsupported type '"+e+"'")}}(i,n),a);t(e);}catch(e){r(e);}n=[];}).resume();})}function f(e,t,r){var n=t;switch(t){case"blob":case"arraybuffer":n="uint8array";break;case"base64":n="string";}try{this._internalType=n,this._outputType=t,this._mimeType=r,h.checkSupport(n),this._worker=e.pipe(new i(n)),e.lock();}catch(e){this._worker=new s("error"),this._worker.error(e);}}f.prototype={accumulate:function(e){return l(this,e)},on:function(e,t){var r=this;return "data"===e?this._worker.on(e,function(e){t.call(r,e.data,e.meta);}):this._worker.on(e,function(){h.delay(t,arguments,r);}),this},resume:function(){return h.delay(this._worker.resume,[],this._worker),this},pause:function(){return this._worker.pause(),this},toNodejsStream:function(e){if(h.checkSupport("nodestream"),"nodebuffer"!==this._outputType)throw new Error(this._outputType+" is not supported by this method");return new o(this,{objectMode:"nodebuffer"!==this._outputType},e)}},t.exports=f;},{"../base64":1,"../external":6,"../nodejs/NodejsStreamOutputAdapter":13,"../support":30,"../utils":32,"./ConvertWorker":24,"./GenericWorker":28}],30:[function(e,t,r){if(r.base64=!0,r.array=!0,r.string=!0,r.arraybuffer="undefined"!=typeof ArrayBuffer&&"undefined"!=typeof Uint8Array,r.nodebuffer="undefined"!=typeof Buffer,r.uint8array="undefined"!=typeof Uint8Array,"undefined"==typeof ArrayBuffer)r.blob=!1;else {var n=new ArrayBuffer(0);try{r.blob=0===new Blob([n],{type:"application/zip"}).size;}catch(e){try{var i=new(self.BlobBuilder||self.WebKitBlobBuilder||self.MozBlobBuilder||self.MSBlobBuilder);i.append(n),r.blob=0===i.getBlob("application/zip").size;}catch(e){r.blob=!1;}}}try{r.nodestream=!!e("readable-stream").Readable;}catch(e){r.nodestream=!1;}},{"readable-stream":16}],31:[function(e,t,s){for(var o=e("./utils"),h=e("./support"),r=e("./nodejsUtils"),n=e("./stream/GenericWorker"),u=new Array(256),i=0;i<256;i++)u[i]=252<=i?6:248<=i?5:240<=i?4:224<=i?3:192<=i?2:1;u[254]=u[254]=1;function a(){n.call(this,"utf-8 decode"),this.leftOver=null;}function l(){n.call(this,"utf-8 encode");}s.utf8encode=function(e){return h.nodebuffer?r.newBufferFrom(e,"utf-8"):function(e){var t,r,n,i,s,a=e.length,o=0;for(i=0;i<a;i++)55296==(64512&(r=e.charCodeAt(i)))&&i+1<a&&56320==(64512&(n=e.charCodeAt(i+1)))&&(r=65536+(r-55296<<10)+(n-56320),i++),o+=r<128?1:r<2048?2:r<65536?3:4;for(t=h.uint8array?new Uint8Array(o):new Array(o),i=s=0;s<o;i++)55296==(64512&(r=e.charCodeAt(i)))&&i+1<a&&56320==(64512&(n=e.charCodeAt(i+1)))&&(r=65536+(r-55296<<10)+(n-56320),i++),r<128?t[s++]=r:(r<2048?t[s++]=192|r>>>6:(r<65536?t[s++]=224|r>>>12:(t[s++]=240|r>>>18,t[s++]=128|r>>>12&63),t[s++]=128|r>>>6&63),t[s++]=128|63&r);return t}(e)},s.utf8decode=function(e){return h.nodebuffer?o.transformTo("nodebuffer",e).toString("utf-8"):function(e){var t,r,n,i,s=e.length,a=new Array(2*s);for(t=r=0;t<s;)if((n=e[t++])<128)a[r++]=n;else if(4<(i=u[n]))a[r++]=65533,t+=i-1;else {for(n&=2===i?31:3===i?15:7;1<i&&t<s;)n=n<<6|63&e[t++],i--;1<i?a[r++]=65533:n<65536?a[r++]=n:(n-=65536,a[r++]=55296|n>>10&1023,a[r++]=56320|1023&n);}return a.length!==r&&(a.subarray?a=a.subarray(0,r):a.length=r),o.applyFromCharCode(a)}(e=o.transformTo(h.uint8array?"uint8array":"array",e))},o.inherits(a,n),a.prototype.processChunk=function(e){var t=o.transformTo(h.uint8array?"uint8array":"array",e.data);if(this.leftOver&&this.leftOver.length){if(h.uint8array){var r=t;(t=new Uint8Array(r.length+this.leftOver.length)).set(this.leftOver,0),t.set(r,this.leftOver.length);}else t=this.leftOver.concat(t);this.leftOver=null;}var n=function(e,t){var r;for((t=t||e.length)>e.length&&(t=e.length),r=t-1;0<=r&&128==(192&e[r]);)r--;return r<0?t:0===r?t:r+u[e[r]]>t?r:t}(t),i=t;n!==t.length&&(h.uint8array?(i=t.subarray(0,n),this.leftOver=t.subarray(n,t.length)):(i=t.slice(0,n),this.leftOver=t.slice(n,t.length))),this.push({data:s.utf8decode(i),meta:e.meta});},a.prototype.flush=function(){this.leftOver&&this.leftOver.length&&(this.push({data:s.utf8decode(this.leftOver),meta:{}}),this.leftOver=null);},s.Utf8DecodeWorker=a,o.inherits(l,n),l.prototype.processChunk=function(e){this.push({data:s.utf8encode(e.data),meta:e.meta});},s.Utf8EncodeWorker=l;},{"./nodejsUtils":14,"./stream/GenericWorker":28,"./support":30,"./utils":32}],32:[function(e,t,a){var o=e("./support"),h=e("./base64"),r=e("./nodejsUtils"),u=e("./external");function n(e){return e}function l(e,t){for(var r=0;r<e.length;++r)t[r]=255&e.charCodeAt(r);return t}e("setimmediate"),a.newBlob=function(t,r){a.checkSupport("blob");try{return new Blob([t],{type:r})}catch(e){try{var n=new(self.BlobBuilder||self.WebKitBlobBuilder||self.MozBlobBuilder||self.MSBlobBuilder);return n.append(t),n.getBlob(r)}catch(e){throw new Error("Bug : can't construct the Blob.")}}};var i={stringifyByChunk:function(e,t,r){var n=[],i=0,s=e.length;if(s<=r)return String.fromCharCode.apply(null,e);for(;i<s;)"array"===t||"nodebuffer"===t?n.push(String.fromCharCode.apply(null,e.slice(i,Math.min(i+r,s)))):n.push(String.fromCharCode.apply(null,e.subarray(i,Math.min(i+r,s)))),i+=r;return n.join("")},stringifyByChar:function(e){for(var t="",r=0;r<e.length;r++)t+=String.fromCharCode(e[r]);return t},applyCanBeUsed:{uint8array:function(){try{return o.uint8array&&1===String.fromCharCode.apply(null,new Uint8Array(1)).length}catch(e){return !1}}(),nodebuffer:function(){try{return o.nodebuffer&&1===String.fromCharCode.apply(null,r.allocBuffer(1)).length}catch(e){return !1}}()}};function s(e){var t=65536,r=a.getTypeOf(e),n=!0;if("uint8array"===r?n=i.applyCanBeUsed.uint8array:"nodebuffer"===r&&(n=i.applyCanBeUsed.nodebuffer),n)for(;1<t;)try{return i.stringifyByChunk(e,r,t)}catch(e){t=Math.floor(t/2);}return i.stringifyByChar(e)}function f(e,t){for(var r=0;r<e.length;r++)t[r]=e[r];return t}a.applyFromCharCode=s;var c={};c.string={string:n,array:function(e){return l(e,new Array(e.length))},arraybuffer:function(e){return c.string.uint8array(e).buffer},uint8array:function(e){return l(e,new Uint8Array(e.length))},nodebuffer:function(e){return l(e,r.allocBuffer(e.length))}},c.array={string:s,array:n,arraybuffer:function(e){return new Uint8Array(e).buffer},uint8array:function(e){return new Uint8Array(e)},nodebuffer:function(e){return r.newBufferFrom(e)}},c.arraybuffer={string:function(e){return s(new Uint8Array(e))},array:function(e){return f(new Uint8Array(e),new Array(e.byteLength))},arraybuffer:n,uint8array:function(e){return new Uint8Array(e)},nodebuffer:function(e){return r.newBufferFrom(new Uint8Array(e))}},c.uint8array={string:s,array:function(e){return f(e,new Array(e.length))},arraybuffer:function(e){return e.buffer},uint8array:n,nodebuffer:function(e){return r.newBufferFrom(e)}},c.nodebuffer={string:s,array:function(e){return f(e,new Array(e.length))},arraybuffer:function(e){return c.nodebuffer.uint8array(e).buffer},uint8array:function(e){return f(e,new Uint8Array(e.length))},nodebuffer:n},a.transformTo=function(e,t){if(t=t||"",!e)return t;a.checkSupport(e);var r=a.getTypeOf(t);return c[r][e](t)},a.resolve=function(e){for(var t=e.split("/"),r=[],n=0;n<t.length;n++){var i=t[n];"."===i||""===i&&0!==n&&n!==t.length-1||(".."===i?r.pop():r.push(i));}return r.join("/")},a.getTypeOf=function(e){return "string"==typeof e?"string":"[object Array]"===Object.prototype.toString.call(e)?"array":o.nodebuffer&&r.isBuffer(e)?"nodebuffer":o.uint8array&&e instanceof Uint8Array?"uint8array":o.arraybuffer&&e instanceof ArrayBuffer?"arraybuffer":void 0},a.checkSupport=function(e){if(!o[e.toLowerCase()])throw new Error(e+" is not supported by this platform")},a.MAX_VALUE_16BITS=65535,a.MAX_VALUE_32BITS=-1,a.pretty=function(e){var t,r,n="";for(r=0;r<(e||"").length;r++)n+="\\x"+((t=e.charCodeAt(r))<16?"0":"")+t.toString(16).toUpperCase();return n},a.delay=function(e,t,r){setImmediate(function(){e.apply(r||null,t||[]);});},a.inherits=function(e,t){function r(){}r.prototype=t.prototype,e.prototype=new r;},a.extend=function(){var e,t,r={};for(e=0;e<arguments.length;e++)for(t in arguments[e])Object.prototype.hasOwnProperty.call(arguments[e],t)&&void 0===r[t]&&(r[t]=arguments[e][t]);return r},a.prepareContent=function(r,e,n,i,s){return u.Promise.resolve(e).then(function(n){return o.blob&&(n instanceof Blob||-1!==["[object File]","[object Blob]"].indexOf(Object.prototype.toString.call(n)))&&"undefined"!=typeof FileReader?new u.Promise(function(t,r){var e=new FileReader;e.onload=function(e){t(e.target.result);},e.onerror=function(e){r(e.target.error);},e.readAsArrayBuffer(n);}):n}).then(function(e){var t=a.getTypeOf(e);return t?("arraybuffer"===t?e=a.transformTo("uint8array",e):"string"===t&&(s?e=h.decode(e):n&&!0!==i&&(e=function(e){return l(e,o.uint8array?new Uint8Array(e.length):new Array(e.length))}(e))),e):u.Promise.reject(new Error("Can't read the data of '"+r+"'. Is it in a supported JavaScript type (String, Blob, ArrayBuffer, etc) ?"))})};},{"./base64":1,"./external":6,"./nodejsUtils":14,"./support":30,setimmediate:54}],33:[function(e,t,r){var n=e("./reader/readerFor"),i=e("./utils"),s=e("./signature"),a=e("./zipEntry"),o=e("./support");function h(e){this.files=[],this.loadOptions=e;}h.prototype={checkSignature:function(e){if(!this.reader.readAndCheckSignature(e)){this.reader.index-=4;var t=this.reader.readString(4);throw new Error("Corrupted zip or bug: unexpected signature ("+i.pretty(t)+", expected "+i.pretty(e)+")")}},isSignature:function(e,t){var r=this.reader.index;this.reader.setIndex(e);var n=this.reader.readString(4)===t;return this.reader.setIndex(r),n},readBlockEndOfCentral:function(){this.diskNumber=this.reader.readInt(2),this.diskWithCentralDirStart=this.reader.readInt(2),this.centralDirRecordsOnThisDisk=this.reader.readInt(2),this.centralDirRecords=this.reader.readInt(2),this.centralDirSize=this.reader.readInt(4),this.centralDirOffset=this.reader.readInt(4),this.zipCommentLength=this.reader.readInt(2);var e=this.reader.readData(this.zipCommentLength),t=o.uint8array?"uint8array":"array",r=i.transformTo(t,e);this.zipComment=this.loadOptions.decodeFileName(r);},readBlockZip64EndOfCentral:function(){this.zip64EndOfCentralSize=this.reader.readInt(8),this.reader.skip(4),this.diskNumber=this.reader.readInt(4),this.diskWithCentralDirStart=this.reader.readInt(4),this.centralDirRecordsOnThisDisk=this.reader.readInt(8),this.centralDirRecords=this.reader.readInt(8),this.centralDirSize=this.reader.readInt(8),this.centralDirOffset=this.reader.readInt(8),this.zip64ExtensibleData={};for(var e,t,r,n=this.zip64EndOfCentralSize-44;0<n;)e=this.reader.readInt(2),t=this.reader.readInt(4),r=this.reader.readData(t),this.zip64ExtensibleData[e]={id:e,length:t,value:r};},readBlockZip64EndOfCentralLocator:function(){if(this.diskWithZip64CentralDirStart=this.reader.readInt(4),this.relativeOffsetEndOfZip64CentralDir=this.reader.readInt(8),this.disksCount=this.reader.readInt(4),1<this.disksCount)throw new Error("Multi-volumes zip are not supported")},readLocalFiles:function(){var e,t;for(e=0;e<this.files.length;e++)t=this.files[e],this.reader.setIndex(t.localHeaderOffset),this.checkSignature(s.LOCAL_FILE_HEADER),t.readLocalPart(this.reader),t.handleUTF8(),t.processAttributes();},readCentralDir:function(){var e;for(this.reader.setIndex(this.centralDirOffset);this.reader.readAndCheckSignature(s.CENTRAL_FILE_HEADER);)(e=new a({zip64:this.zip64},this.loadOptions)).readCentralPart(this.reader),this.files.push(e);if(this.centralDirRecords!==this.files.length&&0!==this.centralDirRecords&&0===this.files.length)throw new Error("Corrupted zip or bug: expected "+this.centralDirRecords+" records in central dir, got "+this.files.length)},readEndOfCentral:function(){var e=this.reader.lastIndexOfSignature(s.CENTRAL_DIRECTORY_END);if(e<0)throw !this.isSignature(0,s.LOCAL_FILE_HEADER)?new Error("Can't find end of central directory : is this a zip file ? If it is, see https://stuk.github.io/jszip/documentation/howto/read_zip.html"):new Error("Corrupted zip: can't find end of central directory");this.reader.setIndex(e);var t=e;if(this.checkSignature(s.CENTRAL_DIRECTORY_END),this.readBlockEndOfCentral(),this.diskNumber===i.MAX_VALUE_16BITS||this.diskWithCentralDirStart===i.MAX_VALUE_16BITS||this.centralDirRecordsOnThisDisk===i.MAX_VALUE_16BITS||this.centralDirRecords===i.MAX_VALUE_16BITS||this.centralDirSize===i.MAX_VALUE_32BITS||this.centralDirOffset===i.MAX_VALUE_32BITS){if(this.zip64=!0,(e=this.reader.lastIndexOfSignature(s.ZIP64_CENTRAL_DIRECTORY_LOCATOR))<0)throw new Error("Corrupted zip: can't find the ZIP64 end of central directory locator");if(this.reader.setIndex(e),this.checkSignature(s.ZIP64_CENTRAL_DIRECTORY_LOCATOR),this.readBlockZip64EndOfCentralLocator(),!this.isSignature(this.relativeOffsetEndOfZip64CentralDir,s.ZIP64_CENTRAL_DIRECTORY_END)&&(this.relativeOffsetEndOfZip64CentralDir=this.reader.lastIndexOfSignature(s.ZIP64_CENTRAL_DIRECTORY_END),this.relativeOffsetEndOfZip64CentralDir<0))throw new Error("Corrupted zip: can't find the ZIP64 end of central directory");this.reader.setIndex(this.relativeOffsetEndOfZip64CentralDir),this.checkSignature(s.ZIP64_CENTRAL_DIRECTORY_END),this.readBlockZip64EndOfCentral();}var r=this.centralDirOffset+this.centralDirSize;this.zip64&&(r+=20,r+=12+this.zip64EndOfCentralSize);var n=t-r;if(0<n)this.isSignature(t,s.CENTRAL_FILE_HEADER)||(this.reader.zero=n);else if(n<0)throw new Error("Corrupted zip: missing "+Math.abs(n)+" bytes.")},prepareReader:function(e){this.reader=n(e);},load:function(e){this.prepareReader(e),this.readEndOfCentral(),this.readCentralDir(),this.readLocalFiles();}},t.exports=h;},{"./reader/readerFor":22,"./signature":23,"./support":30,"./utils":32,"./zipEntry":34}],34:[function(e,t,r){var n=e("./reader/readerFor"),s=e("./utils"),i=e("./compressedObject"),a=e("./crc32"),o=e("./utf8"),h=e("./compressions"),u=e("./support");function l(e,t){this.options=e,this.loadOptions=t;}l.prototype={isEncrypted:function(){return 1==(1&this.bitFlag)},useUTF8:function(){return 2048==(2048&this.bitFlag)},readLocalPart:function(e){var t,r;if(e.skip(22),this.fileNameLength=e.readInt(2),r=e.readInt(2),this.fileName=e.readData(this.fileNameLength),e.skip(r),-1===this.compressedSize||-1===this.uncompressedSize)throw new Error("Bug or corrupted zip : didn't get enough information from the central directory (compressedSize === -1 || uncompressedSize === -1)");if(null===(t=function(e){for(var t in h)if(Object.prototype.hasOwnProperty.call(h,t)&&h[t].magic===e)return h[t];return null}(this.compressionMethod)))throw new Error("Corrupted zip : compression "+s.pretty(this.compressionMethod)+" unknown (inner file : "+s.transformTo("string",this.fileName)+")");this.decompressed=new i(this.compressedSize,this.uncompressedSize,this.crc32,t,e.readData(this.compressedSize));},readCentralPart:function(e){this.versionMadeBy=e.readInt(2),e.skip(2),this.bitFlag=e.readInt(2),this.compressionMethod=e.readString(2),this.date=e.readDate(),this.crc32=e.readInt(4),this.compressedSize=e.readInt(4),this.uncompressedSize=e.readInt(4);var t=e.readInt(2);if(this.extraFieldsLength=e.readInt(2),this.fileCommentLength=e.readInt(2),this.diskNumberStart=e.readInt(2),this.internalFileAttributes=e.readInt(2),this.externalFileAttributes=e.readInt(4),this.localHeaderOffset=e.readInt(4),this.isEncrypted())throw new Error("Encrypted zip are not supported");e.skip(t),this.readExtraFields(e),this.parseZIP64ExtraField(e),this.fileComment=e.readData(this.fileCommentLength);},processAttributes:function(){this.unixPermissions=null,this.dosPermissions=null;var e=this.versionMadeBy>>8;this.dir=!!(16&this.externalFileAttributes),0==e&&(this.dosPermissions=63&this.externalFileAttributes),3==e&&(this.unixPermissions=this.externalFileAttributes>>16&65535),this.dir||"/"!==this.fileNameStr.slice(-1)||(this.dir=!0);},parseZIP64ExtraField:function(){if(this.extraFields[1]){var e=n(this.extraFields[1].value);this.uncompressedSize===s.MAX_VALUE_32BITS&&(this.uncompressedSize=e.readInt(8)),this.compressedSize===s.MAX_VALUE_32BITS&&(this.compressedSize=e.readInt(8)),this.localHeaderOffset===s.MAX_VALUE_32BITS&&(this.localHeaderOffset=e.readInt(8)),this.diskNumberStart===s.MAX_VALUE_32BITS&&(this.diskNumberStart=e.readInt(4));}},readExtraFields:function(e){var t,r,n,i=e.index+this.extraFieldsLength;for(this.extraFields||(this.extraFields={});e.index+4<i;)t=e.readInt(2),r=e.readInt(2),n=e.readData(r),this.extraFields[t]={id:t,length:r,value:n};e.setIndex(i);},handleUTF8:function(){var e=u.uint8array?"uint8array":"array";if(this.useUTF8())this.fileNameStr=o.utf8decode(this.fileName),this.fileCommentStr=o.utf8decode(this.fileComment);else {var t=this.findExtraFieldUnicodePath();if(null!==t)this.fileNameStr=t;else {var r=s.transformTo(e,this.fileName);this.fileNameStr=this.loadOptions.decodeFileName(r);}var n=this.findExtraFieldUnicodeComment();if(null!==n)this.fileCommentStr=n;else {var i=s.transformTo(e,this.fileComment);this.fileCommentStr=this.loadOptions.decodeFileName(i);}}},findExtraFieldUnicodePath:function(){var e=this.extraFields[28789];if(e){var t=n(e.value);return 1!==t.readInt(1)?null:a(this.fileName)!==t.readInt(4)?null:o.utf8decode(t.readData(e.length-5))}return null},findExtraFieldUnicodeComment:function(){var e=this.extraFields[25461];if(e){var t=n(e.value);return 1!==t.readInt(1)?null:a(this.fileComment)!==t.readInt(4)?null:o.utf8decode(t.readData(e.length-5))}return null}},t.exports=l;},{"./compressedObject":2,"./compressions":3,"./crc32":4,"./reader/readerFor":22,"./support":30,"./utf8":31,"./utils":32}],35:[function(e,t,r){function n(e,t,r){this.name=e,this.dir=r.dir,this.date=r.date,this.comment=r.comment,this.unixPermissions=r.unixPermissions,this.dosPermissions=r.dosPermissions,this._data=t,this._dataBinary=r.binary,this.options={compression:r.compression,compressionOptions:r.compressionOptions};}var s=e("./stream/StreamHelper"),i=e("./stream/DataWorker"),a=e("./utf8"),o=e("./compressedObject"),h=e("./stream/GenericWorker");n.prototype={internalStream:function(e){var t=null,r="string";try{if(!e)throw new Error("No output type specified.");var n="string"===(r=e.toLowerCase())||"text"===r;"binarystring"!==r&&"text"!==r||(r="string"),t=this._decompressWorker();var i=!this._dataBinary;i&&!n&&(t=t.pipe(new a.Utf8EncodeWorker)),!i&&n&&(t=t.pipe(new a.Utf8DecodeWorker));}catch(e){(t=new h("error")).error(e);}return new s(t,r,"")},async:function(e,t){return this.internalStream(e).accumulate(t)},nodeStream:function(e,t){return this.internalStream(e||"nodebuffer").toNodejsStream(t)},_compressWorker:function(e,t){if(this._data instanceof o&&this._data.compression.magic===e.magic)return this._data.getCompressedWorker();var r=this._decompressWorker();return this._dataBinary||(r=r.pipe(new a.Utf8EncodeWorker)),o.createWorkerFrom(r,e,t)},_decompressWorker:function(){return this._data instanceof o?this._data.getContentWorker():this._data instanceof h?this._data:new i(this._data)}};for(var u=["asText","asBinary","asNodeBuffer","asUint8Array","asArrayBuffer"],l=function(){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade 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h,c=e("../utils/common"),u=e("./trees"),d=e("./adler32"),p=e("./crc32"),n=e("./messages"),l=0,f=4,m=0,_=-2,g=-1,b=4,i=2,v=8,y=9,s=286,a=30,o=19,w=2*s+1,k=15,x=3,S=258,z=S+x+1,C=42,E=113,A=1,I=2,O=3,B=4;function R(e,t){return e.msg=n[t],t}function T(e){return (e<<1)-(4<e?9:0)}function D(e){for(var t=e.length;0<=--t;)e[t]=0;}function F(e){var t=e.state,r=t.pending;r>e.avail_out&&(r=e.avail_out),0!==r&&(c.arraySet(e.output,t.pending_buf,t.pending_out,r,e.next_out),e.next_out+=r,t.pending_out+=r,e.total_out+=r,e.avail_out-=r,t.pending-=r,0===t.pending&&(t.pending_out=0));}function N(e,t){u._tr_flush_block(e,0<=e.block_start?e.block_start:-1,e.strstart-e.block_start,t),e.block_start=e.strstart,F(e.strm);}function U(e,t){e.pending_buf[e.pending++]=t;}function P(e,t){e.pending_buf[e.pending++]=t>>>8&255,e.pending_buf[e.pending++]=255&t;}function L(e,t){var 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t,r,n,i,s,a,o,h,u,l,f=e.w_size;do{if(i=e.window_size-e.lookahead-e.strstart,e.strstart>=f+(f-z)){for(c.arraySet(e.window,e.window,f,f,0),e.match_start-=f,e.strstart-=f,e.block_start-=f,t=r=e.hash_size;n=e.head[--t],e.head[t]=f<=n?n-f:0,--r;);for(t=r=f;n=e.prev[--t],e.prev[t]=f<=n?n-f:0,--r;);i+=f;}if(0===e.strm.avail_in)break;if(a=e.strm,o=e.window,h=e.strstart+e.lookahead,u=i,l=void 0,l=a.avail_in,u<l&&(l=u),r=0===l?0:(a.avail_in-=l,c.arraySet(o,a.input,a.next_in,l,h),1===a.state.wrap?a.adler=d(a.adler,o,l,h):2===a.state.wrap&&(a.adler=p(a.adler,o,l,h)),a.next_in+=l,a.total_in+=l,l),e.lookahead+=r,e.lookahead+e.insert>=x)for(s=e.strstart-e.insert,e.ins_h=e.window[s],e.ins_h=(e.ins_h<<e.hash_shift^e.window[s+1])&e.hash_mask;e.insert&&(e.ins_h=(e.ins_h<<e.hash_shift^e.window[s+x-1])&e.hash_mask,e.prev[s&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=s,s++,e.insert--,!(e.lookahead+e.insert<x)););}while(e.lookahead<z&&0!==e.strm.avail_in)}function Z(e,t){for(var r,n;;){if(e.lookahead<z){if(j(e),e.lookahead<z&&t===l)return A;if(0===e.lookahead)break}if(r=0,e.lookahead>=x&&(e.ins_h=(e.ins_h<<e.hash_shift^e.window[e.strstart+x-1])&e.hash_mask,r=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart),0!==r&&e.strstart-r<=e.w_size-z&&(e.match_length=L(e,r)),e.match_length>=x)if(n=u._tr_tally(e,e.strstart-e.match_start,e.match_length-x),e.lookahead-=e.match_length,e.match_length<=e.max_lazy_match&&e.lookahead>=x){for(e.match_length--;e.strstart++,e.ins_h=(e.ins_h<<e.hash_shift^e.window[e.strstart+x-1])&e.hash_mask,r=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart,0!=--e.match_length;);e.strstart++;}else e.strstart+=e.match_length,e.match_length=0,e.ins_h=e.window[e.strstart],e.ins_h=(e.ins_h<<e.hash_shift^e.window[e.strstart+1])&e.hash_mask;else n=u._tr_tally(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++;if(n&&(N(e,!1),0===e.strm.avail_out))return A}return e.insert=e.strstart<x-1?e.strstart:x-1,t===f?(N(e,!0),0===e.strm.avail_out?O:B):e.last_lit&&(N(e,!1),0===e.strm.avail_out)?A:I}function W(e,t){for(var r,n,i;;){if(e.lookahead<z){if(j(e),e.lookahead<z&&t===l)return A;if(0===e.lookahead)break}if(r=0,e.lookahead>=x&&(e.ins_h=(e.ins_h<<e.hash_shift^e.window[e.strstart+x-1])&e.hash_mask,r=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart),e.prev_length=e.match_length,e.prev_match=e.match_start,e.match_length=x-1,0!==r&&e.prev_length<e.max_lazy_match&&e.strstart-r<=e.w_size-z&&(e.match_length=L(e,r),e.match_length<=5&&(1===e.strategy||e.match_length===x&&4096<e.strstart-e.match_start)&&(e.match_length=x-1)),e.prev_length>=x&&e.match_length<=e.prev_length){for(i=e.strstart+e.lookahead-x,n=u._tr_tally(e,e.strstart-1-e.prev_match,e.prev_length-x),e.lookahead-=e.prev_length-1,e.prev_length-=2;++e.strstart<=i&&(e.ins_h=(e.ins_h<<e.hash_shift^e.window[e.strstart+x-1])&e.hash_mask,r=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart),0!=--e.prev_length;);if(e.match_available=0,e.match_length=x-1,e.strstart++,n&&(N(e,!1),0===e.strm.avail_out))return A}else if(e.match_available){if((n=u._tr_tally(e,0,e.window[e.strstart-1]))&&N(e,!1),e.strstart++,e.lookahead--,0===e.strm.avail_out)return A}else e.match_available=1,e.strstart++,e.lookahead--;}return e.match_available&&(n=u._tr_tally(e,0,e.window[e.strstart-1]),e.match_available=0),e.insert=e.strstart<x-1?e.strstart:x-1,t===f?(N(e,!0),0===e.strm.avail_out?O:B):e.last_lit&&(N(e,!1),0===e.strm.avail_out)?A:I}function M(e,t,r,n,i){this.good_length=e,this.max_lazy=t,this.nice_length=r,this.max_chain=n,this.func=i;}function H(){this.strm=null,this.status=0,this.pending_buf=null,this.pending_buf_size=0,this.pending_out=0,this.pending=0,this.wrap=0,this.gzhead=null,this.gzindex=0,this.method=v,this.last_flush=-1,this.w_size=0,this.w_bits=0,this.w_mask=0,this.window=null,this.window_size=0,this.prev=null,this.head=null,this.ins_h=0,this.hash_size=0,this.hash_bits=0,this.hash_mask=0,this.hash_shift=0,this.block_start=0,this.match_length=0,this.prev_match=0,this.match_available=0,this.strstart=0,this.match_start=0,this.lookahead=0,this.prev_length=0,this.max_chain_length=0,this.max_lazy_match=0,this.level=0,this.strategy=0,this.good_match=0,this.nice_match=0,this.dyn_ltree=new c.Buf16(2*w),this.dyn_dtree=new c.Buf16(2*(2*a+1)),this.bl_tree=new c.Buf16(2*(2*o+1)),D(this.dyn_ltree),D(this.dyn_dtree),D(this.bl_tree),this.l_desc=null,this.d_desc=null,this.bl_desc=null,this.bl_count=new c.Buf16(k+1),this.heap=new c.Buf16(2*s+1),D(this.heap),this.heap_len=0,this.heap_max=0,this.depth=new c.Buf16(2*s+1),D(this.depth),this.l_buf=0,this.lit_bufsize=0,this.last_lit=0,this.d_buf=0,this.opt_len=0,this.static_len=0,this.matches=0,this.insert=0,this.bi_buf=0,this.bi_valid=0;}function G(e){var t;return e&&e.state?(e.total_in=e.total_out=0,e.data_type=i,(t=e.state).pending=0,t.pending_out=0,t.wrap<0&&(t.wrap=-t.wrap),t.status=t.wrap?C:E,e.adler=2===t.wrap?0:1,t.last_flush=l,u._tr_init(t),m):R(e,_)}function K(e){var t=G(e);return t===m&&function(e){e.window_size=2*e.w_size,D(e.head),e.max_lazy_match=h[e.level].max_lazy,e.good_match=h[e.level].good_length,e.nice_match=h[e.level].nice_length,e.max_chain_length=h[e.level].max_chain,e.strstart=0,e.block_start=0,e.lookahead=0,e.insert=0,e.match_length=e.prev_length=x-1,e.match_available=0,e.ins_h=0;}(e.state),t}function Y(e,t,r,n,i,s){if(!e)return _;var a=1;if(t===g&&(t=6),n<0?(a=0,n=-n):15<n&&(a=2,n-=16),i<1||y<i||r!==v||n<8||15<n||t<0||9<t||s<0||b<s)return R(e,_);8===n&&(n=9);var o=new H;return (e.state=o).strm=e,o.wrap=a,o.gzhead=null,o.w_bits=n,o.w_size=1<<o.w_bits,o.w_mask=o.w_size-1,o.hash_bits=i+7,o.hash_size=1<<o.hash_bits,o.hash_mask=o.hash_size-1,o.hash_shift=~~((o.hash_bits+x-1)/x),o.window=new c.Buf8(2*o.w_size),o.head=new c.Buf16(o.hash_size),o.prev=new c.Buf16(o.w_size),o.lit_bufsize=1<<i+6,o.pending_buf_size=4*o.lit_bufsize,o.pending_buf=new c.Buf8(o.pending_buf_size),o.d_buf=1*o.lit_bufsize,o.l_buf=3*o.lit_bufsize,o.level=t,o.strategy=s,o.method=r,K(e)}h=[new M(0,0,0,0,function(e,t){var r=65535;for(r>e.pending_buf_size-5&&(r=e.pending_buf_size-5);;){if(e.lookahead<=1){if(j(e),0===e.lookahead&&t===l)return A;if(0===e.lookahead)break}e.strstart+=e.lookahead,e.lookahead=0;var n=e.block_start+r;if((0===e.strstart||e.strstart>=n)&&(e.lookahead=e.strstart-n,e.strstart=n,N(e,!1),0===e.strm.avail_out))return A;if(e.strstart-e.block_start>=e.w_size-z&&(N(e,!1),0===e.strm.avail_out))return A}return e.insert=0,t===f?(N(e,!0),0===e.strm.avail_out?O:B):(e.strstart>e.block_start&&(N(e,!1),e.strm.avail_out),A)}),new M(4,4,8,4,Z),new M(4,5,16,8,Z),new M(4,6,32,32,Z),new M(4,4,16,16,W),new M(8,16,32,32,W),new M(8,16,128,128,W),new M(8,32,128,256,W),new M(32,128,258,1024,W),new M(32,258,258,4096,W)],r.deflateInit=function(e,t){return Y(e,t,v,15,8,0)},r.deflateInit2=Y,r.deflateReset=K,r.deflateResetKeep=G,r.deflateSetHeader=function(e,t){return e&&e.state?2!==e.state.wrap?_:(e.state.gzhead=t,m):_},r.deflate=function(e,t){var r,n,i,s;if(!e||!e.state||5<t||t<0)return e?R(e,_):_;if(n=e.state,!e.output||!e.input&&0!==e.avail_in||666===n.status&&t!==f)return R(e,0===e.avail_out?-5:_);if(n.strm=e,r=n.last_flush,n.last_flush=t,n.status===C)if(2===n.wrap)e.adler=0,U(n,31),U(n,139),U(n,8),n.gzhead?(U(n,(n.gzhead.text?1:0)+(n.gzhead.hcrc?2:0)+(n.gzhead.extra?4:0)+(n.gzhead.name?8:0)+(n.gzhead.comment?16:0)),U(n,255&n.gzhead.time),U(n,n.gzhead.time>>8&255),U(n,n.gzhead.time>>16&255),U(n,n.gzhead.time>>24&255),U(n,9===n.level?2:2<=n.strategy||n.level<2?4:0),U(n,255&n.gzhead.os),n.gzhead.extra&&n.gzhead.extra.length&&(U(n,255&n.gzhead.extra.length),U(n,n.gzhead.extra.length>>8&255)),n.gzhead.hcrc&&(e.adler=p(e.adler,n.pending_buf,n.pending,0)),n.gzindex=0,n.status=69):(U(n,0),U(n,0),U(n,0),U(n,0),U(n,0),U(n,9===n.level?2:2<=n.strategy||n.level<2?4:0),U(n,3),n.status=E);else {var a=v+(n.w_bits-8<<4)<<8;a|=(2<=n.strategy||n.level<2?0:n.level<6?1:6===n.level?2:3)<<6,0!==n.strstart&&(a|=32),a+=31-a%31,n.status=E,P(n,a),0!==n.strstart&&(P(n,e.adler>>>16),P(n,65535&e.adler)),e.adler=1;}if(69===n.status)if(n.gzhead.extra){for(i=n.pending;n.gzindex<(65535&n.gzhead.extra.length)&&(n.pending!==n.pending_buf_size||(n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),F(e),i=n.pending,n.pending!==n.pending_buf_size));)U(n,255&n.gzhead.extra[n.gzindex]),n.gzindex++;n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),n.gzindex===n.gzhead.extra.length&&(n.gzindex=0,n.status=73);}else n.status=73;if(73===n.status)if(n.gzhead.name){i=n.pending;do{if(n.pending===n.pending_buf_size&&(n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),F(e),i=n.pending,n.pending===n.pending_buf_size)){s=1;break}s=n.gzindex<n.gzhead.name.length?255&n.gzhead.name.charCodeAt(n.gzindex++):0,U(n,s);}while(0!==s);n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),0===s&&(n.gzindex=0,n.status=91);}else n.status=91;if(91===n.status)if(n.gzhead.comment){i=n.pending;do{if(n.pending===n.pending_buf_size&&(n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),F(e),i=n.pending,n.pending===n.pending_buf_size)){s=1;break}s=n.gzindex<n.gzhead.comment.length?255&n.gzhead.comment.charCodeAt(n.gzindex++):0,U(n,s);}while(0!==s);n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),0===s&&(n.status=103);}else n.status=103;if(103===n.status&&(n.gzhead.hcrc?(n.pending+2>n.pending_buf_size&&F(e),n.pending+2<=n.pending_buf_size&&(U(n,255&e.adler),U(n,e.adler>>8&255),e.adler=0,n.status=E)):n.status=E),0!==n.pending){if(F(e),0===e.avail_out)return n.last_flush=-1,m}else if(0===e.avail_in&&T(t)<=T(r)&&t!==f)return R(e,-5);if(666===n.status&&0!==e.avail_in)return R(e,-5);if(0!==e.avail_in||0!==n.lookahead||t!==l&&666!==n.status){var o=2===n.strategy?function(e,t){for(var r;;){if(0===e.lookahead&&(j(e),0===e.lookahead)){if(t===l)return A;break}if(e.match_length=0,r=u._tr_tally(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++,r&&(N(e,!1),0===e.strm.avail_out))return A}return e.insert=0,t===f?(N(e,!0),0===e.strm.avail_out?O:B):e.last_lit&&(N(e,!1),0===e.strm.avail_out)?A:I}(n,t):3===n.strategy?function(e,t){for(var r,n,i,s,a=e.window;;){if(e.lookahead<=S){if(j(e),e.lookahead<=S&&t===l)return A;if(0===e.lookahead)break}if(e.match_length=0,e.lookahead>=x&&0<e.strstart&&(n=a[i=e.strstart-1])===a[++i]&&n===a[++i]&&n===a[++i]){s=e.strstart+S;do{}while(n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&i<s);e.match_length=S-(s-i),e.match_length>e.lookahead&&(e.match_length=e.lookahead);}if(e.match_length>=x?(r=u._tr_tally(e,1,e.match_length-x),e.lookahead-=e.match_length,e.strstart+=e.match_length,e.match_length=0):(r=u._tr_tally(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++),r&&(N(e,!1),0===e.strm.avail_out))return A}return e.insert=0,t===f?(N(e,!0),0===e.strm.avail_out?O:B):e.last_lit&&(N(e,!1),0===e.strm.avail_out)?A:I}(n,t):h[n.level].func(n,t);if(o!==O&&o!==B||(n.status=666),o===A||o===O)return 0===e.avail_out&&(n.last_flush=-1),m;if(o===I&&(1===t?u._tr_align(n):5!==t&&(u._tr_stored_block(n,0,0,!1),3===t&&(D(n.head),0===n.lookahead&&(n.strstart=0,n.block_start=0,n.insert=0))),F(e),0===e.avail_out))return n.last_flush=-1,m}return t!==f?m:n.wrap<=0?1:(2===n.wrap?(U(n,255&e.adler),U(n,e.adler>>8&255),U(n,e.adler>>16&255),U(n,e.adler>>24&255),U(n,255&e.total_in),U(n,e.total_in>>8&255),U(n,e.total_in>>16&255),U(n,e.total_in>>24&255)):(P(n,e.adler>>>16),P(n,65535&e.adler)),F(e),0<n.wrap&&(n.wrap=-n.wrap),0!==n.pending?m:1)},r.deflateEnd=function(e){var t;return e&&e.state?(t=e.state.status)!==C&&69!==t&&73!==t&&91!==t&&103!==t&&t!==E&&666!==t?R(e,_):(e.state=null,t===E?R(e,-3):m):_},r.deflateSetDictionary=function(e,t){var r,n,i,s,a,o,h,u,l=t.length;if(!e||!e.state)return _;if(2===(s=(r=e.state).wrap)||1===s&&r.status!==C||r.lookahead)return _;for(1===s&&(e.adler=d(e.adler,t,l,0)),r.wrap=0,l>=r.w_size&&(0===s&&(D(r.head),r.strstart=0,r.block_start=0,r.insert=0),u=new c.Buf8(r.w_size),c.arraySet(u,t,l-r.w_size,r.w_size,0),t=u,l=r.w_size),a=e.avail_in,o=e.next_in,h=e.input,e.avail_in=l,e.next_in=0,e.input=t,j(r);r.lookahead>=x;){for(n=r.strstart,i=r.lookahead-(x-1);r.ins_h=(r.ins_h<<r.hash_shift^r.window[n+x-1])&r.hash_mask,r.prev[n&r.w_mask]=r.head[r.ins_h],r.head[r.ins_h]=n,n++,--i;);r.strstart=n,r.lookahead=x-1,j(r);}return r.strstart+=r.lookahead,r.block_start=r.strstart,r.insert=r.lookahead,r.lookahead=0,r.match_length=r.prev_length=x-1,r.match_available=0,e.next_in=o,e.input=h,e.avail_in=a,r.wrap=s,m},r.deflateInfo="pako deflate (from Nodeca project)";},{"../utils/common":41,"./adler32":43,"./crc32":45,"./messages":51,"./trees":52}],47:[function(e,t,r){t.exports=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1;};},{}],48:[function(e,t,r){t.exports=function(e,t){var r,n,i,s,a,o,h,u,l,f,c,d,p,m,_,g,b,v,y,w,k,x,S,z,C;r=e.state,n=e.next_in,z=e.input,i=n+(e.avail_in-5),s=e.next_out,C=e.output,a=s-(t-e.avail_out),o=s+(e.avail_out-257),h=r.dmax,u=r.wsize,l=r.whave,f=r.wnext,c=r.window,d=r.hold,p=r.bits,m=r.lencode,_=r.distcode,g=(1<<r.lenbits)-1,b=(1<<r.distbits)-1;e:do{p<15&&(d+=z[n++]<<p,p+=8,d+=z[n++]<<p,p+=8),v=m[d&g];t:for(;;){if(d>>>=y=v>>>24,p-=y,0===(y=v>>>16&255))C[s++]=65535&v;else {if(!(16&y)){if(0==(64&y)){v=m[(65535&v)+(d&(1<<y)-1)];continue t}if(32&y){r.mode=12;break e}e.msg="invalid literal/length code",r.mode=30;break e}w=65535&v,(y&=15)&&(p<y&&(d+=z[n++]<<p,p+=8),w+=d&(1<<y)-1,d>>>=y,p-=y),p<15&&(d+=z[n++]<<p,p+=8,d+=z[n++]<<p,p+=8),v=_[d&b];r:for(;;){if(d>>>=y=v>>>24,p-=y,!(16&(y=v>>>16&255))){if(0==(64&y)){v=_[(65535&v)+(d&(1<<y)-1)];continue r}e.msg="invalid distance code",r.mode=30;break e}if(k=65535&v,p<(y&=15)&&(d+=z[n++]<<p,(p+=8)<y&&(d+=z[n++]<<p,p+=8)),h<(k+=d&(1<<y)-1)){e.msg="invalid distance too far back",r.mode=30;break e}if(d>>>=y,p-=y,(y=s-a)<k){if(l<(y=k-y)&&r.sane){e.msg="invalid distance too far back",r.mode=30;break e}if(S=c,(x=0)===f){if(x+=u-y,y<w){for(w-=y;C[s++]=c[x++],--y;);x=s-k,S=C;}}else if(f<y){if(x+=u+f-y,(y-=f)<w){for(w-=y;C[s++]=c[x++],--y;);if(x=0,f<w){for(w-=y=f;C[s++]=c[x++],--y;);x=s-k,S=C;}}}else if(x+=f-y,y<w){for(w-=y;C[s++]=c[x++],--y;);x=s-k,S=C;}for(;2<w;)C[s++]=S[x++],C[s++]=S[x++],C[s++]=S[x++],w-=3;w&&(C[s++]=S[x++],1<w&&(C[s++]=S[x++]));}else {for(x=s-k;C[s++]=C[x++],C[s++]=C[x++],C[s++]=C[x++],2<(w-=3););w&&(C[s++]=C[x++],1<w&&(C[s++]=C[x++]));}break}}break}}while(n<i&&s<o);n-=w=p>>3,d&=(1<<(p-=w<<3))-1,e.next_in=n,e.next_out=s,e.avail_in=n<i?i-n+5:5-(n-i),e.avail_out=s<o?o-s+257:257-(s-o),r.hold=d,r.bits=p;};},{}],49:[function(e,t,r){var I=e("../utils/common"),O=e("./adler32"),B=e("./crc32"),R=e("./inffast"),T=e("./inftrees"),D=1,F=2,N=0,U=-2,P=1,n=852,i=592;function L(e){return (e>>>24&255)+(e>>>8&65280)+((65280&e)<<8)+((255&e)<<24)}function s(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new I.Buf16(320),this.work=new I.Buf16(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0;}function a(e){var t;return e&&e.state?(t=e.state,e.total_in=e.total_out=t.total=0,e.msg="",t.wrap&&(e.adler=1&t.wrap),t.mode=P,t.last=0,t.havedict=0,t.dmax=32768,t.head=null,t.hold=0,t.bits=0,t.lencode=t.lendyn=new I.Buf32(n),t.distcode=t.distdyn=new I.Buf32(i),t.sane=1,t.back=-1,N):U}function o(e){var t;return e&&e.state?((t=e.state).wsize=0,t.whave=0,t.wnext=0,a(e)):U}function h(e,t){var r,n;return e&&e.state?(n=e.state,t<0?(r=0,t=-t):(r=1+(t>>4),t<48&&(t&=15)),t&&(t<8||15<t)?U:(null!==n.window&&n.wbits!==t&&(n.window=null),n.wrap=r,n.wbits=t,o(e))):U}function u(e,t){var r,n;return e?(n=new s,(e.state=n).window=null,(r=h(e,t))!==N&&(e.state=null),r):U}var l,f,c=!0;function j(e){if(c){var t;for(l=new I.Buf32(512),f=new I.Buf32(32),t=0;t<144;)e.lens[t++]=8;for(;t<256;)e.lens[t++]=9;for(;t<280;)e.lens[t++]=7;for(;t<288;)e.lens[t++]=8;for(T(D,e.lens,0,288,l,0,e.work,{bits:9}),t=0;t<32;)e.lens[t++]=5;T(F,e.lens,0,32,f,0,e.work,{bits:5}),c=!1;}e.lencode=l,e.lenbits=9,e.distcode=f,e.distbits=5;}function Z(e,t,r,n){var i,s=e.state;return null===s.window&&(s.wsize=1<<s.wbits,s.wnext=0,s.whave=0,s.window=new I.Buf8(s.wsize)),n>=s.wsize?(I.arraySet(s.window,t,r-s.wsize,s.wsize,0),s.wnext=0,s.whave=s.wsize):(n<(i=s.wsize-s.wnext)&&(i=n),I.arraySet(s.window,t,r-n,i,s.wnext),(n-=i)?(I.arraySet(s.window,t,r-n,n,0),s.wnext=n,s.whave=s.wsize):(s.wnext+=i,s.wnext===s.wsize&&(s.wnext=0),s.whave<s.wsize&&(s.whave+=i))),0}r.inflateReset=o,r.inflateReset2=h,r.inflateResetKeep=a,r.inflateInit=function(e){return u(e,15)},r.inflateInit2=u,r.inflate=function(e,t){var r,n,i,s,a,o,h,u,l,f,c,d,p,m,_,g,b,v,y,w,k,x,S,z,C=0,E=new I.Buf8(4),A=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];if(!e||!e.state||!e.output||!e.input&&0!==e.avail_in)return U;12===(r=e.state).mode&&(r.mode=13),a=e.next_out,i=e.output,h=e.avail_out,s=e.next_in,n=e.input,o=e.avail_in,u=r.hold,l=r.bits,f=o,c=h,x=N;e:for(;;)switch(r.mode){case P:if(0===r.wrap){r.mode=13;break}for(;l<16;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(2&r.wrap&&35615===u){E[r.check=0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0),l=u=0,r.mode=2;break}if(r.flags=0,r.head&&(r.head.done=!1),!(1&r.wrap)||(((255&u)<<8)+(u>>8))%31){e.msg="incorrect header check",r.mode=30;break}if(8!=(15&u)){e.msg="unknown compression method",r.mode=30;break}if(l-=4,k=8+(15&(u>>>=4)),0===r.wbits)r.wbits=k;else if(k>r.wbits){e.msg="invalid window size",r.mode=30;break}r.dmax=1<<k,e.adler=r.check=1,r.mode=512&u?10:12,l=u=0;break;case 2:for(;l<16;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(r.flags=u,8!=(255&r.flags)){e.msg="unknown compression method",r.mode=30;break}if(57344&r.flags){e.msg="unknown header flags set",r.mode=30;break}r.head&&(r.head.text=u>>8&1),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0)),l=u=0,r.mode=3;case 3:for(;l<32;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}r.head&&(r.head.time=u),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,E[2]=u>>>16&255,E[3]=u>>>24&255,r.check=B(r.check,E,4,0)),l=u=0,r.mode=4;case 4:for(;l<16;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}r.head&&(r.head.xflags=255&u,r.head.os=u>>8),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0)),l=u=0,r.mode=5;case 5:if(1024&r.flags){for(;l<16;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}r.length=u,r.head&&(r.head.extra_len=u),512&r.flags&&(E[0]=255&u,E[1]=u>>>8&255,r.check=B(r.check,E,2,0)),l=u=0;}else r.head&&(r.head.extra=null);r.mode=6;case 6:if(1024&r.flags&&(o<(d=r.length)&&(d=o),d&&(r.head&&(k=r.head.extra_len-r.length,r.head.extra||(r.head.extra=new Array(r.head.extra_len)),I.arraySet(r.head.extra,n,s,d,k)),512&r.flags&&(r.check=B(r.check,n,d,s)),o-=d,s+=d,r.length-=d),r.length))break e;r.length=0,r.mode=7;case 7:if(2048&r.flags){if(0===o)break e;for(d=0;k=n[s+d++],r.head&&k&&r.length<65536&&(r.head.name+=String.fromCharCode(k)),k&&d<o;);if(512&r.flags&&(r.check=B(r.check,n,d,s)),o-=d,s+=d,k)break e}else r.head&&(r.head.name=null);r.length=0,r.mode=8;case 8:if(4096&r.flags){if(0===o)break e;for(d=0;k=n[s+d++],r.head&&k&&r.length<65536&&(r.head.comment+=String.fromCharCode(k)),k&&d<o;);if(512&r.flags&&(r.check=B(r.check,n,d,s)),o-=d,s+=d,k)break e}else r.head&&(r.head.comment=null);r.mode=9;case 9:if(512&r.flags){for(;l<16;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(u!==(65535&r.check)){e.msg="header crc mismatch",r.mode=30;break}l=u=0;}r.head&&(r.head.hcrc=r.flags>>9&1,r.head.done=!0),e.adler=r.check=0,r.mode=12;break;case 10:for(;l<32;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}e.adler=r.check=L(u),l=u=0,r.mode=11;case 11:if(0===r.havedict)return e.next_out=a,e.avail_out=h,e.next_in=s,e.avail_in=o,r.hold=u,r.bits=l,2;e.adler=r.check=1,r.mode=12;case 12:if(5===t||6===t)break e;case 13:if(r.last){u>>>=7&l,l-=7&l,r.mode=27;break}for(;l<3;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}switch(r.last=1&u,l-=1,3&(u>>>=1)){case 0:r.mode=14;break;case 1:if(j(r),r.mode=20,6!==t)break;u>>>=2,l-=2;break e;case 2:r.mode=17;break;case 3:e.msg="invalid block type",r.mode=30;}u>>>=2,l-=2;break;case 14:for(u>>>=7&l,l-=7&l;l<32;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if((65535&u)!=(u>>>16^65535)){e.msg="invalid stored block lengths",r.mode=30;break}if(r.length=65535&u,l=u=0,r.mode=15,6===t)break e;case 15:r.mode=16;case 16:if(d=r.length){if(o<d&&(d=o),h<d&&(d=h),0===d)break e;I.arraySet(i,n,s,d,a),o-=d,s+=d,h-=d,a+=d,r.length-=d;break}r.mode=12;break;case 17:for(;l<14;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(r.nlen=257+(31&u),u>>>=5,l-=5,r.ndist=1+(31&u),u>>>=5,l-=5,r.ncode=4+(15&u),u>>>=4,l-=4,286<r.nlen||30<r.ndist){e.msg="too many length or distance symbols",r.mode=30;break}r.have=0,r.mode=18;case 18:for(;r.have<r.ncode;){for(;l<3;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}r.lens[A[r.have++]]=7&u,u>>>=3,l-=3;}for(;r.have<19;)r.lens[A[r.have++]]=0;if(r.lencode=r.lendyn,r.lenbits=7,S={bits:r.lenbits},x=T(0,r.lens,0,19,r.lencode,0,r.work,S),r.lenbits=S.bits,x){e.msg="invalid code lengths set",r.mode=30;break}r.have=0,r.mode=19;case 19:for(;r.have<r.nlen+r.ndist;){for(;g=(C=r.lencode[u&(1<<r.lenbits)-1])>>>16&255,b=65535&C,!((_=C>>>24)<=l);){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(b<16)u>>>=_,l-=_,r.lens[r.have++]=b;else {if(16===b){for(z=_+2;l<z;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}if(u>>>=_,l-=_,0===r.have){e.msg="invalid bit length repeat",r.mode=30;break}k=r.lens[r.have-1],d=3+(3&u),u>>>=2,l-=2;}else if(17===b){for(z=_+3;l<z;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}l-=_,k=0,d=3+(7&(u>>>=_)),u>>>=3,l-=3;}else {for(z=_+7;l<z;){if(0===o)break e;o--,u+=n[s++]<<l,l+=8;}l-=_,k=0,d=11+(127&(u>>>=_)),u>>>=7,l-=7;}if(r.have+d>r.nlen+r.ndist){e.msg="invalid bit length repeat",r.mode=30;break}for(;d--;)r.lens[r.have++]=k;}}if(30===r.mode)break;if(0===r.lens[256]){e.msg="invalid code -- missing end-of-block",r.mode=30;break}if(r.lenbits=9,S={bits:r.lenbits},x=T(D,r.lens,0,r.nlen,r.lencode,0,r.work,S),r.lenbits=S.bits,x){e.msg="invalid literal/lengths set",r.mode=30;break}if(r.distbits=6,r.distcode=r.distdyn,S={bits:r.distbits},x=T(F,r.lens,r.nlen,r.ndist,r.distcode,0,r.work,S),r.distbits=S.bits,x){e.msg="invalid distances set",r.mode=30;break}if(r.mode=20,6===t)break e;case 20:r.mode=21;case 21:if(6<=o&&258<=h){e.next_out=a,e.avail_out=h,e.next_in=s,e.avail_in=o,r.hold=u,r.bits=l,R(e,c),a=e.next_out,i=e.output,h=e.avail_out,s=e.next_in,n=e.input,o=e.avail_in,u=r.hold,l=r.bits,12===r.mode&&(r.back=-1);break}for(r.back=0;g=(C=r.lencode[u&(1<<r.lenbits)-1])>>>16&255,b=65535&C,!((_=C>>>24)<=l);){if(0===o)break 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    const file$m = "src\\GraphwithStoryStructureIdeas.svelte";

    function get_each_context$g(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[45] = list[i];
    	return child_ctx;
    }

    function get_each_context_1$9(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[45] = list[i];
    	return child_ctx;
    }

    // (1463:12) {#each nodes as node}
    function create_each_block_1$9(ctx) {
    	let option;
    	let t_value = /*node*/ ctx[45] + "";
    	let t;
    	let option_value_value;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = option_value_value = /*node*/ ctx[45];
    			option.value = option.__value;
    			add_location(option, file$m, 1463, 16, 55431);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*nodes*/ 2048 && t_value !== (t_value = /*node*/ ctx[45] + "")) set_data_dev(t, t_value);

    			if (dirty[0] & /*nodes*/ 2048 && option_value_value !== (option_value_value = /*node*/ ctx[45])) {
    				prop_dev(option, "__value", option_value_value);
    				option.value = option.__value;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$9.name,
    		type: "each",
    		source: "(1463:12) {#each nodes as node}",
    		ctx
    	});

    	return block;
    }

    // (1469:12) {#each nodes as node}
    function create_each_block$g(ctx) {
    	let option;
    	let t_value = /*node*/ ctx[45] + "";
    	let t;
    	let option_value_value;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = option_value_value = /*node*/ ctx[45];
    			option.value = option.__value;
    			add_location(option, file$m, 1469, 16, 55681);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*nodes*/ 2048 && t_value !== (t_value = /*node*/ ctx[45] + "")) set_data_dev(t, t_value);

    			if (dirty[0] & /*nodes*/ 2048 && option_value_value !== (option_value_value = /*node*/ ctx[45])) {
    				prop_dev(option, "__value", option_value_value);
    				option.value = option.__value;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$g.name,
    		type: "each",
    		source: "(1469:12) {#each nodes as node}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$m(ctx) {
    	let div0;
    	let t0;
    	let br0;
    	let t1;
    	let br1;
    	let t2;
    	let button0;
    	let t4;
    	let div4;
    	let div1;
    	let t5;
    	let input0;
    	let t6;
    	let br2;
    	let t7;
    	let br3;
    	let t8;
    	let button1;
    	let t10;
    	let button2;
    	let t12;
    	let br4;
    	let br5;
    	let t13;
    	let button3;
    	let t15;
    	let hr;
    	let t16;
    	let button4;
    	let t18;
    	let button5;
    	let t20;
    	let br6;
    	let br7;
    	let t21;
    	let input1;
    	let t22;
    	let input2;
    	let t23;
    	let button6;
    	let t25;
    	let div2;
    	let t26;
    	let br8;
    	let t27;
    	let br9;
    	let t28;
    	let button7;
    	let t30;
    	let textarea;
    	let t31;
    	let br10;
    	let t32;
    	let button8;
    	let t34;
    	let br11;
    	let t35;
    	let t36;
    	let div3;
    	let t37;
    	let input3;
    	let t38;
    	let input4;
    	let t39;
    	let select0;
    	let option0;
    	let option1;
    	let option2;
    	let t43;
    	let button9;
    	let t45;
    	let br12;
    	let t46;
    	let br13;
    	let t47;
    	let input5;
    	let t48;
    	let select1;
    	let option3;
    	let t50;
    	let select2;
    	let option4;
    	let t52;
    	let button10;
    	let t54;
    	let br14;
    	let t55;
    	let br15;
    	let t56;
    	let button11;
    	let t58;
    	let br16;
    	let t59;
    	let t60;
    	let div5;
    	let mounted;
    	let dispose;
    	let each_value_1 = /*nodes*/ ctx[11];
    	validate_each_argument(each_value_1);
    	let each_blocks_1 = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks_1[i] = create_each_block_1$9(get_each_context_1$9(ctx, each_value_1, i));
    	}

    	let each_value = /*nodes*/ ctx[11];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$g(get_each_context$g(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			div0 = element$1("div");
    			t0 = text("Can Use as state machine minimap if applicable (Current node is highlighted) ");
    			br0 = element$1("br");
    			t1 = text("\r\n    For game planning - Graph then auto JSON then LLM fills details then load to Svelte then placeholder for play canvas? (and unreal last as most resource intensive and no free remote workspace) ");
    			br1 = element$1("br");
    			t2 = space();
    			button0 = element$1("button");
    			button0.textContent = "Recenter and Fit Graph";
    			t4 = space();
    			div4 = element$1("div");
    			div1 = element$1("div");
    			t5 = text("Load - ");
    			input0 = element$1("input");
    			t6 = space();
    			br2 = element$1("br");
    			t7 = space();
    			br3 = element$1("br");
    			t8 = text("\r\n        Save - ");
    			button1 = element$1("button");
    			button1.textContent = "Save Graph in Current State";
    			t10 = space();
    			button2 = element$1("button");
    			button2.textContent = "Download JSON";
    			t12 = space();
    			br4 = element$1("br");
    			br5 = element$1("br");
    			t13 = space();
    			button3 = element$1("button");
    			button3.textContent = "Reset Graph";
    			t15 = space();
    			hr = element$1("hr");
    			t16 = text("\r\n        to be merge with the Autogen Buttons\r\n        ");
    			button4 = element$1("button");
    			button4.textContent = "Generate Story Data";
    			t18 = text("\r\n        Auto-Generate Graph -\r\n        ");
    			button5 = element$1("button");
    			button5.textContent = "Auto-Generate Graph Data";
    			t20 = space();
    			br6 = element$1("br");
    			br7 = element$1("br");
    			t21 = text("\r\n        Nodes ");
    			input1 = element$1("input");
    			t22 = text(" Edges ");
    			input2 = element$1("input");
    			t23 = space();
    			button6 = element$1("button");
    			button6.textContent = "Autogen graph";
    			t25 = space();
    			div2 = element$1("div");
    			t26 = text("LLM Assist - Autogen graph then Copy to Clipboard - Ask LLM: 1) Please write a story based on this structure ");
    			br8 = element$1("br");
    			t27 = text(" 2) Thanks lets now add the story back into the structure  ");
    			br9 = element$1("br");
    			t28 = space();
    			button7 = element$1("button");
    			button7.textContent = "To Clipboard";
    			t30 = space();
    			textarea = element$1("textarea");
    			t31 = space();
    			br10 = element$1("br");
    			t32 = space();
    			button8 = element$1("button");
    			button8.textContent = "Attempt to load (if no data provided default will load)";
    			t34 = space();
    			br11 = element$1("br");
    			t35 = text(" placeholder for 10 possible shortest paths through the structure to test some story line options and whether they make sense");
    			t36 = space();
    			div3 = element$1("div");
    			t37 = text("Add Node -\r\n        ");
    			input3 = element$1("input");
    			t38 = space();
    			input4 = element$1("input");
    			t39 = space();
    			select0 = element$1("select");
    			option0 = element$1("option");
    			option0.textContent = "Character";
    			option1 = element$1("option");
    			option1.textContent = "Item";
    			option2 = element$1("option");
    			option2.textContent = "Location";
    			t43 = text("\r\n        placeholder for source/target | placeholder for related node selection | placeholder for edge id |\r\n        ");
    			button9 = element$1("button");
    			button9.textContent = "Add Node";
    			t45 = text("\r\n        placeholder for grouped add nodes\r\n\r\n        ");
    			br12 = element$1("br");
    			t46 = space();
    			br13 = element$1("br");
    			t47 = text("\r\n        Add Edge -\r\n        ");
    			input5 = element$1("input");
    			t48 = space();
    			select1 = element$1("select");
    			option3 = element$1("option");
    			option3.textContent = "Select Source Node";

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				each_blocks_1[i].c();
    			}

    			t50 = space();
    			select2 = element$1("select");
    			option4 = element$1("option");
    			option4.textContent = "Select Target Node";

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t52 = space();
    			button10 = element$1("button");
    			button10.textContent = "Add Edge";
    			t54 = space();
    			br14 = element$1("br");
    			t55 = space();
    			br15 = element$1("br");
    			t56 = space();
    			button11 = element$1("button");
    			button11.textContent = "Auto-add onto graph a Branching Path";
    			t58 = space();
    			br16 = element$1("br");
    			t59 = text("placeholder for delete");
    			t60 = space();
    			div5 = element$1("div");
    			add_location(br0, file$m, 1411, 81, 52537);
    			add_location(br1, file$m, 1412, 196, 52739);
    			add_location(button0, file$m, 1413, 4, 52749);
    			add_location(div0, file$m, 1410, 0, 52449);
    			attr_dev(input0, "type", "file");
    			attr_dev(input0, "accept", ".json,.zip");
    			add_location(input0, file$m, 1418, 15, 52882);
    			add_location(br2, file$m, 1419, 8, 52955);
    			add_location(br3, file$m, 1419, 13, 52960);
    			add_location(button1, file$m, 1420, 15, 52981);
    			attr_dev(button2, "id", "smmodalconfigdownload-btn");
    			add_location(button2, file$m, 1421, 8, 53056);
    			add_location(br4, file$m, 1422, 8, 53127);
    			add_location(br5, file$m, 1422, 12, 53131);
    			add_location(button3, file$m, 1423, 8, 53145);
    			add_location(hr, file$m, 1424, 8, 53205);
    			add_location(button4, file$m, 1426, 8, 53265);
    			add_location(button5, file$m, 1428, 8, 53382);
    			add_location(br6, file$m, 1430, 8, 53471);
    			add_location(br7, file$m, 1430, 12, 53475);
    			attr_dev(input1, "type", "number");
    			attr_dev(input1, "name", "nodes");
    			set_style(input1, "width", "40px");
    			add_location(input1, file$m, 1431, 14, 53495);
    			attr_dev(input2, "type", "number");
    			attr_dev(input2, "name", "edges");
    			set_style(input2, "width", "40px");
    			add_location(input2, file$m, 1431, 100, 53581);
    			add_location(button6, file$m, 1432, 8, 53669);
    			add_location(div1, file$m, 1417, 4, 52860);
    			add_location(br8, file$m, 1436, 117, 53877);
    			add_location(br9, file$m, 1436, 180, 53940);
    			add_location(button7, file$m, 1438, 8, 53964);
    			attr_dev(textarea, "id", "llminputstorygraphdata");
    			set_style(textarea, "width", "85%");
    			attr_dev(textarea, "placeholder", "Paste the modified graph structure from LLM here");
    			add_location(textarea, file$m, 1439, 8, 54048);
    			add_location(br10, file$m, 1440, 8, 54242);
    			add_location(button8, file$m, 1440, 13, 54247);
    			add_location(br11, file$m, 1441, 8, 54375);
    			add_location(div2, file$m, 1435, 4, 53753);
    			attr_dev(input3, "type", "text");
    			attr_dev(input3, "placeholder", "Node ID");
    			add_location(input3, file$m, 1446, 8, 54563);
    			attr_dev(input4, "type", "text");
    			attr_dev(input4, "placeholder", "Node Label");
    			add_location(input4, file$m, 1447, 8, 54639);
    			option0.__value = "character";
    			option0.value = option0.__value;
    			add_location(option0, file$m, 1449, 12, 54768);
    			option1.__value = "item";
    			option1.value = option1.__value;
    			add_location(option1, file$m, 1450, 12, 54826);
    			option2.__value = "location";
    			option2.value = option2.__value;
    			add_location(option2, file$m, 1451, 12, 54874);
    			if (/*newNodeType*/ ctx[4] === void 0) add_render_callback(() => /*select0_change_handler*/ ctx[29].call(select0));
    			add_location(select0, file$m, 1448, 8, 54721);
    			add_location(button9, file$m, 1454, 8, 55053);
    			add_location(br12, file$m, 1457, 8, 55152);
    			add_location(br13, file$m, 1457, 13, 55157);
    			attr_dev(input5, "type", "text");
    			attr_dev(input5, "placeholder", "Edge ID");
    			add_location(input5, file$m, 1459, 8, 55191);
    			option3.__value = "";
    			option3.value = option3.__value;
    			option3.disabled = true;
    			option3.selected = true;
    			add_location(option3, file$m, 1461, 12, 55316);
    			if (/*newEdgeSource*/ ctx[6] === void 0) add_render_callback(() => /*select1_change_handler*/ ctx[31].call(select1));
    			add_location(select1, file$m, 1460, 8, 55267);
    			option4.__value = "";
    			option4.value = option4.__value;
    			option4.disabled = true;
    			option4.selected = true;
    			add_location(option4, file$m, 1467, 12, 55566);
    			if (/*newEdgeTarget*/ ctx[7] === void 0) add_render_callback(() => /*select2_change_handler*/ ctx[32].call(select2));
    			add_location(select2, file$m, 1466, 8, 55517);
    			add_location(button10, file$m, 1472, 8, 55767);
    			add_location(br14, file$m, 1474, 8, 55831);
    			add_location(br15, file$m, 1474, 13, 55836);
    			add_location(button11, file$m, 1475, 8, 55850);
    			add_location(br16, file$m, 1477, 8, 55954);
    			add_location(div3, file$m, 1444, 4, 54528);
    			attr_dev(div4, "class", "grid-Container svelte-gj972u");
    			add_location(div4, file$m, 1416, 0, 52826);
    			attr_dev(div5, "id", "cy");
    			attr_dev(div5, "class", "svelte-gj972u");
    			add_location(div5, file$m, 1481, 0, 56004);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div0, anchor);
    			append_dev(div0, t0);
    			append_dev(div0, br0);
    			append_dev(div0, t1);
    			append_dev(div0, br1);
    			append_dev(div0, t2);
    			append_dev(div0, button0);
    			insert_dev(target, t4, anchor);
    			insert_dev(target, div4, anchor);
    			append_dev(div4, div1);
    			append_dev(div1, t5);
    			append_dev(div1, input0);
    			append_dev(div1, t6);
    			append_dev(div1, br2);
    			append_dev(div1, t7);
    			append_dev(div1, br3);
    			append_dev(div1, t8);
    			append_dev(div1, button1);
    			append_dev(div1, t10);
    			append_dev(div1, button2);
    			append_dev(div1, t12);
    			append_dev(div1, br4);
    			append_dev(div1, br5);
    			append_dev(div1, t13);
    			append_dev(div1, button3);
    			append_dev(div1, t15);
    			append_dev(div1, hr);
    			append_dev(div1, t16);
    			append_dev(div1, button4);
    			append_dev(div1, t18);
    			append_dev(div1, button5);
    			append_dev(div1, t20);
    			append_dev(div1, br6);
    			append_dev(div1, br7);
    			append_dev(div1, t21);
    			append_dev(div1, input1);
    			set_input_value(input1, /*autonodes*/ ctx[8]);
    			append_dev(div1, t22);
    			append_dev(div1, input2);
    			set_input_value(input2, /*autoedges*/ ctx[9]);
    			append_dev(div1, t23);
    			append_dev(div1, button6);
    			append_dev(div4, t25);
    			append_dev(div4, div2);
    			append_dev(div2, t26);
    			append_dev(div2, br8);
    			append_dev(div2, t27);
    			append_dev(div2, br9);
    			append_dev(div2, t28);
    			append_dev(div2, button7);
    			append_dev(div2, t30);
    			append_dev(div2, textarea);
    			set_input_value(textarea, /*currentautoGeneratedGraphDataAugmented*/ ctx[10]);
    			append_dev(div2, t31);
    			append_dev(div2, br10);
    			append_dev(div2, t32);
    			append_dev(div2, button8);
    			append_dev(div2, t34);
    			append_dev(div2, br11);
    			append_dev(div2, t35);
    			append_dev(div4, t36);
    			append_dev(div4, div3);
    			append_dev(div3, t37);
    			append_dev(div3, input3);
    			set_input_value(input3, /*newNodeId*/ ctx[2]);
    			append_dev(div3, t38);
    			append_dev(div3, input4);
    			set_input_value(input4, /*newNodeLabel*/ ctx[3]);
    			append_dev(div3, t39);
    			append_dev(div3, select0);
    			append_dev(select0, option0);
    			append_dev(select0, option1);
    			append_dev(select0, option2);
    			select_option(select0, /*newNodeType*/ ctx[4], true);
    			append_dev(div3, t43);
    			append_dev(div3, button9);
    			append_dev(div3, t45);
    			append_dev(div3, br12);
    			append_dev(div3, t46);
    			append_dev(div3, br13);
    			append_dev(div3, t47);
    			append_dev(div3, input5);
    			set_input_value(input5, /*newEdgeId*/ ctx[5]);
    			append_dev(div3, t48);
    			append_dev(div3, select1);
    			append_dev(select1, option3);

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				if (each_blocks_1[i]) {
    					each_blocks_1[i].m(select1, null);
    				}
    			}

    			select_option(select1, /*newEdgeSource*/ ctx[6], true);
    			append_dev(div3, t50);
    			append_dev(div3, select2);
    			append_dev(select2, option4);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(select2, null);
    				}
    			}

    			select_option(select2, /*newEdgeTarget*/ ctx[7], true);
    			append_dev(div3, t52);
    			append_dev(div3, button10);
    			append_dev(div3, t54);
    			append_dev(div3, br14);
    			append_dev(div3, t55);
    			append_dev(div3, br15);
    			append_dev(div3, t56);
    			append_dev(div3, button11);
    			append_dev(div3, t58);
    			append_dev(div3, br16);
    			append_dev(div3, t59);
    			insert_dev(target, t60, anchor);
    			insert_dev(target, div5, anchor);
    			/*div5_binding*/ ctx[33](div5);

    			if (!mounted) {
    				dispose = [
    					listen_dev(button0, "click", /*click_handler*/ ctx[23], false, false, false, false),
    					listen_dev(input0, "change", /*loadGraph*/ ctx[16], false, false, false, false),
    					listen_dev(button1, "click", /*saveGraph*/ ctx[15], false, false, false, false),
    					listen_dev(button3, "click", /*resetGraph*/ ctx[21], false, false, false, false),
    					listen_dev(button4, "click", /*traverseAndGenerateStoryData*/ ctx[14], false, false, false, false),
    					listen_dev(button5, "click", /*generateAndLoadGraphData*/ ctx[17], false, false, false, false),
    					listen_dev(input1, "input", /*input1_input_handler*/ ctx[24]),
    					listen_dev(input2, "input", /*input2_input_handler*/ ctx[25]),
    					listen_dev(button6, "click", /*createAutoGenGraphdata*/ ctx[19], false, false, false, false),
    					listen_dev(button7, "click", /*copycurrentautoGeneratedGraphData*/ ctx[22], false, false, false, false),
    					listen_dev(textarea, "input", /*textarea_input_handler*/ ctx[26]),
    					listen_dev(button8, "click", /*createLinearPathAutoGenstoryload*/ ctx[20], false, false, false, false),
    					listen_dev(input3, "input", /*input3_input_handler*/ ctx[27]),
    					listen_dev(input4, "input", /*input4_input_handler*/ ctx[28]),
    					listen_dev(select0, "change", /*select0_change_handler*/ ctx[29]),
    					listen_dev(button9, "click", /*addNode*/ ctx[12], false, false, false, false),
    					listen_dev(input5, "input", /*input5_input_handler*/ ctx[30]),
    					listen_dev(select1, "change", /*select1_change_handler*/ ctx[31]),
    					listen_dev(select2, "change", /*select2_change_handler*/ ctx[32]),
    					listen_dev(button10, "click", /*addEdge*/ ctx[13], false, false, false, false),
    					listen_dev(button11, "click", /*createBranchingPathadditive*/ ctx[18], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*autonodes*/ 256 && to_number(input1.value) !== /*autonodes*/ ctx[8]) {
    				set_input_value(input1, /*autonodes*/ ctx[8]);
    			}

    			if (dirty[0] & /*autoedges*/ 512 && to_number(input2.value) !== /*autoedges*/ ctx[9]) {
    				set_input_value(input2, /*autoedges*/ ctx[9]);
    			}

    			if (dirty[0] & /*currentautoGeneratedGraphDataAugmented*/ 1024) {
    				set_input_value(textarea, /*currentautoGeneratedGraphDataAugmented*/ ctx[10]);
    			}

    			if (dirty[0] & /*newNodeId*/ 4 && input3.value !== /*newNodeId*/ ctx[2]) {
    				set_input_value(input3, /*newNodeId*/ ctx[2]);
    			}

    			if (dirty[0] & /*newNodeLabel*/ 8 && input4.value !== /*newNodeLabel*/ ctx[3]) {
    				set_input_value(input4, /*newNodeLabel*/ ctx[3]);
    			}

    			if (dirty[0] & /*newNodeType*/ 16) {
    				select_option(select0, /*newNodeType*/ ctx[4]);
    			}

    			if (dirty[0] & /*newEdgeId*/ 32 && input5.value !== /*newEdgeId*/ ctx[5]) {
    				set_input_value(input5, /*newEdgeId*/ ctx[5]);
    			}

    			if (dirty[0] & /*nodes*/ 2048) {
    				each_value_1 = /*nodes*/ ctx[11];
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$9(ctx, each_value_1, i);

    					if (each_blocks_1[i]) {
    						each_blocks_1[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_1[i] = create_each_block_1$9(child_ctx);
    						each_blocks_1[i].c();
    						each_blocks_1[i].m(select1, null);
    					}
    				}

    				for (; i < each_blocks_1.length; i += 1) {
    					each_blocks_1[i].d(1);
    				}

    				each_blocks_1.length = each_value_1.length;
    			}

    			if (dirty[0] & /*newEdgeSource, nodes*/ 2112) {
    				select_option(select1, /*newEdgeSource*/ ctx[6]);
    			}

    			if (dirty[0] & /*nodes*/ 2048) {
    				each_value = /*nodes*/ ctx[11];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$g(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$g(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(select2, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}

    			if (dirty[0] & /*newEdgeTarget, nodes*/ 2176) {
    				select_option(select2, /*newEdgeTarget*/ ctx[7]);
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div0);
    			if (detaching) detach_dev(t4);
    			if (detaching) detach_dev(div4);
    			destroy_each(each_blocks_1, detaching);
    			destroy_each(each_blocks, detaching);
    			if (detaching) detach_dev(t60);
    			if (detaching) detach_dev(div5);
    			/*div5_binding*/ ctx[33](null);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$m.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function autoGenerateGraphData(numNodes, numEdges) {
    	const nodeTypes = ['character', 'item', 'location'];
    	const characterNames = ['Alex', 'Elara', 'Draven', 'Luna', 'Orin'];

    	const itemNames = [
    		'Ancient Relic',
    		'Mystic Amulet',
    		'Cursed Artifact',
    		'Golden Sword',
    		'Healing Potion'
    	];

    	const locationNames = ['Hidden Temple', 'Village of Eldoria', 'Ancient Ruins'];
    	const nodes = [];
    	const edges = [];
    	const usedEdges = new Set();

    	function getRandomItem(arr) {
    		return arr[Math.floor(Math.random() * arr.length)];
    	}

    	function generateNode(id) {
    		const type = getRandomItem(nodeTypes);
    		let label;

    		if (type === 'character') {
    			label = getRandomItem(characterNames);
    		} else if (type === 'item') {
    			label = getRandomItem(itemNames);
    		} else {
    			label = getRandomItem(locationNames);
    		}

    		return { data: { id, label, type, degree: 0 } };
    	}

    	function generateEdge(id, source, target) {
    		return { data: { id, source, target } };
    	}

    	// Generate unique node IDs
    	for (let i = 1; i <= numNodes; i++) {
    		nodes.push(generateNode(`node${i}`));
    	}

    	// Generate unique edges
    	for (let i = 1; i <= numEdges; i++) {
    		let source, target, edgeId;

    		do {
    			source = getRandomItem(nodes).data.id;
    			target = getRandomItem(nodes).data.id;
    			edgeId = `edge${i}`;
    		} while (source === target || usedEdges.has(`${source}-${target}`));

    		usedEdges.add(`${source}-${target}`);
    		edges.push(generateEdge(edgeId, source, target));
    	}

    	return { nodes, edges };
    }

    function generateTimelineinGraph(nNodes, nEdges) {
    	const nodes = [];
    	const edges = [];

    	// Generate nodes
    	for (let i = 0; i < nNodes; i++) {
    		nodes.push({
    			data: {
    				id: String.fromCharCode(65 + i), // Generate ID as A, B, C, ...
    				label: `Event ${i + 1}`,
    				type: 'event',
    				degree: i + 1
    			}
    		});
    	}

    	// Generate edges
    	for (let i = 0; i < nEdges; i++) {
    		const sourceIndex = Math.floor(Math.random() * nNodes);
    		let targetIndex = Math.floor(Math.random() * nNodes);

    		// Ensure target is different from source
    		while (targetIndex === sourceIndex) {
    			targetIndex = Math.floor(Math.random() * nNodes);
    		}

    		edges.push({
    			data: {
    				id: `edge${i + 1}`,
    				source: String.fromCharCode(65 + sourceIndex),
    				target: String.fromCharCode(65 + targetIndex)
    			}
    		});
    	}

    	return { nodes, edges };
    }

    function createStoryParts(graphData) {
    	const nodeMap = new Map();
    	console.log(graphData);

    	graphData.nodes.forEach((node, index) => {
    		nodeMap.set(node.data.id, { ...node.data, part: index });
    	});

    	const story = graphData.edges.map((edge, index) => {
    		const sourceNode = nodeMap.get(edge.data.source);

    		return {
    			part: index,
    			objectives: [],
    			targets: [
    				{
    					name: `placeholder ${index}`,
    					x: 500,
    					y: 400,
    					collisionType: "alert",
    					collisiontext: sourceNode.label
    				}
    			],
    			actions: {}
    		};
    	});

    	return { story };
    }

    function GraphtoJSONConfig() {
    	const storyJSONgraphdata = generateTimelineinGraph(7, 10);
    	const storyJSON = createStoryParts(storyJSONgraphdata); //.nodes, storyJSONgraphdata.edges);
    	console.log(storyJSONgraphdata);
    	console.log(storyJSON);
    }

    function createStateMachine(graphData) {
    	const nodes = new Map();

    	graphData.nodes.forEach(node => {
    		nodes.set(node.data.id, {
    			id: node.data.id,
    			label: node.data.label,
    			type: node.data.type,
    			degree: node.data.degree,
    			transitions: []
    		});
    	});

    	// Add transitions from edges
    	graphData.edges.forEach(edge => {
    		const sourceNode = nodes.get(edge.data.source);
    		const targetNode = nodes.get(edge.data.target);

    		sourceNode.transitions.push({
    			label: `To ${targetNode.label}`,
    			action: targetNode.id,
    			collisionType: "alert",
    			collisiontext: `Transition from ${sourceNode.label} to ${targetNode.label}`
    		});
    	});

    	// Define the linear progression
    	const linearOrder = graphData.nodes.map(node => node.data.id);

    	// Add default transitions for linear progression
    	for (let i = 0; i < linearOrder.length - 1; i++) {
    		const currentNode = nodes.get(linearOrder[i]);
    		const nextNode = nodes.get(linearOrder[i + 1]);

    		currentNode.transitions.push({
    			label: `Next: ${nextNode.label}`,
    			action: nextNode.id,
    			collisionType: "alert",
    			collisiontext: `Default transition from ${currentNode.label} to ${nextNode.label}`
    		});
    	}

    	const modalStates = {};

    	nodes.forEach(node => {
    		const state = {
    			title: node.label,
    			content: `You are at ${node.label}. What would you like to do next?`,
    			items: node.transitions.map(transition => ({
    				label: transition.label,
    				action: transition.action
    			})),
    			consequences: []
    		};

    		modalStates[node.id] = state;
    	});

    	const smmodaldata = {
    		name: "substory1",
    		x: 600,
    		y: 600,
    		collisionType: "smmodal",
    		modalStates
    	};

    	return smmodaldata;
    }

    function GraphtoJSONConfigStatemachineModal() {
    	const storyJSONgraphdata = generateTimelineinGraph(7, 10);
    	const stateMachinewithquotes = createStateMachine(storyJSONgraphdata);

    	//const json = JSON.parse(stateMachinewithquotes);
    	//const stateMachine = JSON.stringify(stateMachinewithquotes, null, 2).replace(/"([^"]+)":/g, '$1:'); // Remove quotes from keys
    	//console.log(stateMachine);
    	function customSerialize(obj, indent = 2, depth = 0) {
    		const pad = (' ').repeat(depth * indent);
    		const padInner = (' ').repeat((depth + 1) * indent);

    		if (Array.isArray(obj)) {
    			return '[\n' + obj.map(value => padInner + customSerialize(value, indent, depth + 1)).join(',\n') + '\n' + pad + ']';
    		} else if (typeof obj === 'object' && obj !== null) {
    			const entries = Object.entries(obj).map(([key, value]) => {
    				const formattedValue = customSerialize(value, indent, depth + 1);
    				return `${padInner}${key}: ${formattedValue}`;
    			});

    			return '{\n' + entries.join(',\n') + '\n' + pad + '}';
    		} else {
    			return JSON.stringify(obj);
    		}
    	}

    	document.getElementById('smmodalconfigdownload-btn').addEventListener('click', () => {
    		// const dataStr = "data:text/json;charset=utf-8," + encodeURIComponent(JSON.stringify(stateMachine, null, 2));
    		const customSerializedData = customSerialize(stateMachinewithquotes);

    		const dataStr = "data:text/plain;charset=utf-8," + encodeURIComponent(customSerializedData);
    		const downloadAnchorNode = document.createElement('a');
    		downloadAnchorNode.setAttribute("href", dataStr);
    		downloadAnchorNode.setAttribute("download", "stateMachineconfig.txt");
    		document.body.appendChild(downloadAnchorNode); // required for firefox
    		downloadAnchorNode.click();
    		downloadAnchorNode.remove();
    	});
    }

    async function copydatatoclipboard(dataToCopy) {
    	try {
    		await navigator.clipboard.writeText(JSON.stringify(dataToCopy, 2, null));
    	} catch(error) {
    		console.error('Failed to copy text: ', err); // console.log('Text copied to clipboard');
    	}
    }

    function instance$m($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('GraphwithStoryStructureIdeas', slots, []);
    	let cy;
    	let graphcontainer;

    	// let scrollgraphContainer;
    	// Data to hold the new node and edge details
    	let newNodeId = '';

    	let newNodeLabel = '';
    	let newNodeType = 'character';
    	let newEdgeId = '';
    	let newEdgeSource = '';
    	let newEdgeTarget = '';

    	let resetGraphData = {
    		nodes: [
    			{
    				data: {
    					id: 'Alex',
    					label: 'Protagonist',
    					type: 'character',
    					degree: 0
    				}
    			}
    		],
    		edges: []
    	};

    	let autonodes = 30;
    	let autoedges = 40;
    	let currentautoGeneratedGraphData;
    	let currentautoGeneratedGraphDataAugmented;
    	let nodes = [];
    	let currentautoexpandGraphData = { nodes: [], edges: [] };

    	// Initial graph data
    	let graphData = {
    		nodes: [
    			// Characters
    			{
    				data: {
    					id: 'Alex',
    					label: 'Protagonist',
    					type: 'character',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'Elara',
    					label: 'Mage',
    					type: 'character',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'Draven',
    					label: 'Rogue',
    					type: 'character',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'Luna',
    					label: 'Warrior',
    					type: 'character',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'Orin',
    					label: 'Healer',
    					type: 'character',
    					degree: 0
    				}
    			},
    			// Items
    			{
    				data: {
    					id: 'Ancient Relic',
    					label: 'Ancient Relic',
    					type: 'item',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'Mystic Amulet',
    					label: 'Mystic Amulet',
    					type: 'item',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'Cursed Artifact',
    					label: 'Cursed Artifact',
    					type: 'item',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'Golden Sword',
    					label: 'Golden Sword',
    					type: 'item',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'Healing Potion',
    					label: 'Healing Potion',
    					type: 'item',
    					degree: 0
    				}
    			},
    			// Locations
    			{
    				data: {
    					id: 'Hidden Temple',
    					label: 'Hidden Temple',
    					type: 'location',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'Village of Eldoria',
    					label: 'Village of Eldoria',
    					type: 'location',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'Ancient Ruins',
    					label: 'Ancient Ruins',
    					type: 'location',
    					degree: 0
    				}
    			}
    		],
    		edges: [
    			// Relationships
    			{
    				data: {
    					id: 'edge1',
    					source: 'Alex',
    					target: 'Ancient Relic'
    				}
    			},
    			{
    				data: {
    					id: 'edge2',
    					source: 'Elara',
    					target: 'Mystic Amulet'
    				}
    			},
    			{
    				data: {
    					id: 'edge3',
    					source: 'Draven',
    					target: 'Cursed Artifact'
    				}
    			},
    			{
    				data: {
    					id: 'edge4',
    					source: 'Ancient Relic',
    					target: 'Mystic Amulet'
    				}
    			},
    			{
    				data: {
    					id: 'edge5',
    					source: 'Luna',
    					target: 'Golden Sword'
    				}
    			},
    			{
    				data: {
    					id: 'edge6',
    					source: 'Orin',
    					target: 'Healing Potion'
    				}
    			},
    			// Quests
    			{
    				data: {
    					id: 'edge7',
    					source: 'Alex',
    					target: 'Hidden Temple'
    				}
    			},
    			{
    				data: {
    					id: 'edge8',
    					source: 'Elara',
    					target: 'Village of Eldoria'
    				}
    			},
    			{
    				data: {
    					id: 'edge9',
    					source: 'Draven',
    					target: 'Ancient Ruins'
    				}
    			},
    			{
    				data: {
    					id: 'edge10',
    					source: 'Luna',
    					target: 'Hidden Temple'
    				}
    			},
    			{
    				data: {
    					id: 'edge11',
    					source: 'Orin',
    					target: 'Village of Eldoria'
    				}
    			}
    		]
    	};

    	// Story data will be generated dynamically
    	let autostoryData = {};

    	onMount(() => {
    		// scrollgraphContainer.scrollLeft = scrollgraphContainer.scrollWidth;
    		// Initialize Cytoscape
    		setTimeout(
    			() => {
    				$$invalidate(0, cy = cytoscape({
    					container: graphcontainer,
    					elements: graphData,
    					style: [
    						{
    							selector: 'node[type="character"]',
    							style: {
    								'background-color': '#FFDDC1',
    								'label': 'data(label)'
    							}
    						},
    						{
    							selector: 'node[type="item"]',
    							style: {
    								'background-color': '#C1FFC1',
    								'label': 'data(label)'
    							}
    						},
    						{
    							selector: 'node',
    							style: {
    								'width': 'mapData(degree, 0, 4, 20, 50)',
    								'height': 'mapData(degree, 0, 4, 20, 50)',
    								'background-color': 'mapData(degree, 0, 4, #FFDDC1, #FF0000)'
    							}
    						},
    						{
    							selector: 'node[isValid="false"]',
    							style: {
    								'border-width': 2,
    								'border-color': '#FF0000'
    							}
    						},
    						{
    							selector: 'edge',
    							style: {
    								'width': 3,
    								'line-color': '#ccc',
    								'target-arrow-color': '#ccc',
    								'target-arrow-shape': 'triangle'
    							}
    						}
    					],
    					layout: {
    						name: 'cose',
    						nodeRepulsion: 8000,
    						idealEdgeLength: 100,
    						fit: true,
    						padding: 30,
    						animate: true,
    						animationDuration: 1000
    					}
    				}));

    				updateNodeDegreesAndStyles();
    				updateNodesList();
    			},
    			500
    		); // Delay to ensure container is fully rendered
    	});

    	// Function to update the list of nodes for the dropdowns
    	function updateNodesList() {
    		$$invalidate(11, nodes = cy.nodes().map(node => node.data('id')));
    	}

    	// Function to update node degrees and styles
    	function updateNodeDegreesAndStyles() {
    		cy.nodes().forEach(node => {
    			const outDegree = node.outgoers('edge').length;
    			const inDegree = node.incomers('edge').length;

    			// Mark node as invalid if it doesn't meet the minimum connectivity criteria
    			if (outDegree < 2 || inDegree < 1) {
    				node.data('isValid', 'false');
    			}

    			// Update the degree in node data for styling purposes
    			node.data('degree', outDegree + inDegree);
    		});

    		// Refresh styles
    		cy.style().update();

    		// Fit the graph to the viewable area after layout
    		cy.on('layoutstop', () => {
    			cy.fit();
    		});

    		cy.layout({ name: 'cose' }).run();
    	}

    	// Function to add a new node
    	function addNode() {
    		cy.add({
    			group: 'nodes',
    			data: {
    				id: newNodeId,
    				label: newNodeLabel,
    				type: newNodeType,
    				degree: 0
    			}
    		});

    		updateNodesList();
    		updateNodeDegreesAndStyles();
    	}

    	// Function to add a new edge and generate story data
    	function addEdge() {
    		cy.add({
    			group: 'edges',
    			data: {
    				id: newEdgeId,
    				source: newEdgeSource,
    				target: newEdgeTarget
    			}
    		});

    		autostoryData[newEdgeId] = generateStoryData(newEdgeId, newEdgeSource, newEdgeTarget);
    		updateNodeDegreesAndStyles();
    	}

    	// Function to generate story data based on the source and target nodes
    	function generateStoryData(edgeId, sourceId, targetId) {
    		const sourceNode = cy.getElementById(sourceId).data();
    		const targetNode = cy.getElementById(targetId).data();

    		return {
    			storyPart: `${sourceNode.label || sourceId} interacts with ${targetNode.label || targetId}.`,
    			requirements: [`Have ${sourceNode.label || sourceId} and ${targetNode.label || targetId}`],
    			outcomes: [
    				`Outcome of ${sourceNode.label || sourceId} and ${targetNode.label || targetId} interaction`
    			]
    		};
    	}

    	// Function to traverse the graph and generate story data for all nodes
    	function traverseAndGenerateStoryData() {
    		graphData.edges.forEach(edge => {
    			const { id, source, target } = edge.data;
    			autostoryData[id] = generateStoryData(id, source, target);
    		});

    		console.log(autostoryData);
    	}

    	// Function to save the graph and story data to a ZIP file
    	async function saveGraph() {
    		const elements = cy.json().elements;
    		const zip = new JSZip();
    		zip.file("graph.json", JSON.stringify(elements, null, 2));

    		//TODO placeholder for populate the story variable below
    		zip.file("story.json", JSON.stringify(autostoryData, null, 2));

    		const content = await zip.generateAsync({ type: "blob" });

    		// Generate a timestamped filename
    		const timestamp = new Date().toISOString().replace(/[:.]/g, '-');

    		const zipFilename = `graph-story-${timestamp}.zip`;
    		const a = document.createElement('a');
    		a.href = URL.createObjectURL(content);
    		a.download = zipFilename;
    		a.click();
    	}

    	// Function to load the graph and story data from JSON or ZIP
    	async function loadGraph(event) {
    		const file = event.target.files[0];
    		const reader = new FileReader();

    		if (file.name.endsWith('.zip')) {
    			reader.onload = async e => {
    				const zip = await JSZip.loadAsync(e.target.result);
    				const graphData = await zip.file("graph.json").async("string");
    				const storyData = await zip.file("story.json").async("string");
    				cy.json({ elements: JSON.parse(graphData) });
    				autostoryData = JSON.parse(storyData);
    				updateNodesList();
    				updateNodeDegreesAndStyles();
    			};

    			reader.readAsArrayBuffer(file);
    		} else {
    			reader.onload = e => {
    				const data = JSON.parse(e.target.result);

    				if (file.name.includes('graph')) {
    					cy.json({ elements: data });
    					updateNodesList();
    					updateNodeDegreesAndStyles();
    				} else if (file.name.includes('story')) {
    					autostoryData = data;
    				}
    			};

    			reader.readAsText(file);
    		}
    	}

    	// Example usage:
    	const timeline = generateTimelineinGraph(7, 10);

    	console.log(timeline.nodes);
    	console.log(timeline.edges);

    	//const practicegraphData = autoGenerateGraphData(10, 15);
    	//console.log(practicegraphData);
    	// Function to generate and load graph data
    	function generateAndLoadGraphData() {
    		const generatedData = autoGenerateGraphData(10, 15);
    		cy.json({ elements: generatedData });
    		updateNodesList();
    		updateNodeDegreesAndStyles();
    		console.log(generatedData);
    	}

    	// Assume the cytoscape initialization and other required functions are already defined
    	function createBranchingPath() {
    		const nodes = [
    			{
    				data: {
    					id: 'A',
    					label: 'Beginning',
    					type: 'event',
    					degree: 1
    				}
    			},
    			{
    				data: {
    					id: 'B',
    					label: 'Choice 1',
    					type: 'event',
    					degree: 2
    				}
    			},
    			{
    				data: {
    					id: 'C1',
    					label: 'Path 1A',
    					type: 'event',
    					degree: 3
    				}
    			},
    			{
    				data: {
    					id: 'C2',
    					label: 'Path 1B',
    					type: 'event',
    					degree: 3
    				}
    			},
    			{
    				data: {
    					id: 'D',
    					label: 'Rejoin Main Path',
    					type: 'event',
    					degree: 4
    				}
    			},
    			{
    				data: {
    					id: 'E',
    					label: 'Climax',
    					type: 'event',
    					degree: 5
    				}
    			},
    			{
    				data: {
    					id: 'F',
    					label: 'End',
    					type: 'event',
    					degree: 6
    				}
    			}
    		];

    		const edges = [
    			{
    				data: { id: 'edge1', source: 'A', target: 'B' }
    			},
    			{
    				data: { id: 'edge2', source: 'B', target: 'C1' }
    			},
    			{
    				data: { id: 'edge3', source: 'B', target: 'C2' }
    			},
    			{
    				data: { id: 'edge4', source: 'C1', target: 'D' }
    			},
    			{
    				data: { id: 'edge5', source: 'C2', target: 'D' }
    			},
    			{
    				data: { id: 'edge6', source: 'D', target: 'E' }
    			},
    			{
    				data: { id: 'edge7', source: 'E', target: 'F' }
    			}
    		];

    		console.log(currentautoexpandGraphData);
    		currentautoexpandGraphData.nodes = [...currentautoexpandGraphData.nodes, ...nodes];
    		currentautoexpandGraphData.edges = [...currentautoexpandGraphData.edges, ...edges];
    		console.log(currentautoexpandGraphData);
    		cy.json({ elements: currentautoexpandGraphData });

    		// nodes.forEach((node, index) => {
    		//     cy.add({
    		//         group: 'nodes',
    		//         data: { ...node.data, id: `${node.data.id}_${Date.now()}_${index}` }
    		//     });
    		// });
    		// edges.forEach((edge, index) => {
    		//     cy.add({
    		//         group: 'edges',
    		//         data: { ...edge.data, id: `${edge.data.id}_${Date.now()}_${index}` }
    		//     });
    		// });
    		updateNodesList();

    		updateNodeDegreesAndStyles();
    	}

    	function createBranchingPathadditive() {
    		const nodes = [
    			{
    				data: {
    					id: 'A',
    					label: 'Beginning',
    					type: 'event',
    					degree: 1
    				}
    			},
    			{
    				data: {
    					id: 'B',
    					label: 'Choice 1',
    					type: 'event',
    					degree: 2
    				}
    			},
    			{
    				data: {
    					id: 'C1',
    					label: 'Path 1A',
    					type: 'event',
    					degree: 3
    				}
    			},
    			{
    				data: {
    					id: 'C2',
    					label: 'Path 1B',
    					type: 'event',
    					degree: 3
    				}
    			},
    			{
    				data: {
    					id: 'D',
    					label: 'Rejoin Main Path',
    					type: 'event',
    					degree: 4
    				}
    			},
    			{
    				data: {
    					id: 'E',
    					label: 'Climax',
    					type: 'event',
    					degree: 5
    				}
    			},
    			{
    				data: {
    					id: 'F',
    					label: 'End',
    					type: 'event',
    					degree: 6
    				}
    			}
    		];

    		const edges = [
    			{
    				data: { id: 'edge1', source: 'A', target: 'B' }
    			},
    			{
    				data: { id: 'edge2', source: 'B', target: 'C1' }
    			},
    			{
    				data: { id: 'edge3', source: 'B', target: 'C2' }
    			},
    			{
    				data: { id: 'edge4', source: 'C1', target: 'D' }
    			},
    			{
    				data: { id: 'edge5', source: 'C2', target: 'D' }
    			},
    			{
    				data: { id: 'edge6', source: 'D', target: 'E' }
    			},
    			{
    				data: { id: 'edge7', source: 'E', target: 'F' }
    			}
    		];

    		// Adding nodes to the current graph data
    		currentautoexpandGraphData.nodes = [...currentautoexpandGraphData.nodes, ...nodes];

    		currentautoexpandGraphData.edges = [...currentautoexpandGraphData.edges, ...edges];

    		// Map to store the original node IDs and their new unique IDs
    		const nodeIdMap = {};

    		// Adding nodes one by one with unique IDs
    		nodes.forEach((node, index) => {
    			const newId = `${node.data.id}_${Date.now()}_${index}`;
    			nodeIdMap[node.data.id] = newId;

    			cy.add({
    				group: 'nodes',
    				data: { ...node.data, id: newId }
    			});
    		});

    		// Adding edges one by one with unique IDs and updated source/target IDs
    		edges.forEach((edge, index) => {
    			const newEdgeId = `${edge.data.id}_${Date.now()}_${index}`;
    			const newSource = nodeIdMap[edge.data.source];
    			const newTarget = nodeIdMap[edge.data.target];

    			cy.add({
    				group: 'edges',
    				data: {
    					...edge.data,
    					id: newEdgeId,
    					source: newSource,
    					target: newTarget
    				}
    			});
    		});

    		updateNodesList();
    		updateNodeDegreesAndStyles();
    	}

    	function createLinearPath() {
    		const nodes = [
    			{
    				data: {
    					id: 'A',
    					label: 'Beginning',
    					type: 'event',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'B',
    					label: 'Middle',
    					type: 'event',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'C',
    					label: 'Climax',
    					type: 'event',
    					degree: 0
    				}
    			},
    			{
    				data: {
    					id: 'D',
    					label: 'End',
    					type: 'event',
    					degree: 0
    				}
    			}
    		];

    		const edges = [
    			{
    				data: { id: 'edge1', source: 'A', target: 'B' }
    			},
    			{
    				data: { id: 'edge2', source: 'B', target: 'C' }
    			},
    			{
    				data: { id: 'edge3', source: 'C', target: 'D' }
    			}
    		];

    		//currentautoexpandGraphData = { nodes, edges };
    		currentautoexpandGraphData.nodes = [...currentautoexpandGraphData.nodes, ...nodes];

    		currentautoexpandGraphData.edges = [...currentautoexpandGraphData.edges, ...edges];
    		cy.json({ elements: currentautoexpandGraphData }); ////elements: { nodes, edges } });
    		updateNodesList();
    		updateNodeDegreesAndStyles();
    	}

    	function createAutoGenGraphdata() {
    		currentautoGeneratedGraphData = generateTimelineinGraph(autonodes, autoedges);
    		console.log(currentautoGeneratedGraphData);

    		cy.json({
    			elements: currentautoGeneratedGraphData,
    			style: [
    				{
    					selector: 'node',
    					style: {
    						'label': 'data(label)',
    						'text-valign': 'center',
    						'color': '#000',
    						'background-color': '#61bffc',
    						'text-outline-width': 2,
    						'text-outline-color': '#fff'
    					}
    				},
    				{
    					selector: 'edge',
    					style: {
    						'width': 3,
    						'line-color': '#ccc',
    						'target-arrow-color': '#ccc',
    						'target-arrow-shape': 'triangle',
    						'curve-style': 'bezier'
    					}
    				}
    			],
    			layout: {
    				name: 'grid',
    				rows: Math.ceil(Math.sqrt(timeline.nodes.length))
    			}
    		}); ////elements: { nodes, edges } });

    		updateNodesList();
    		updateNodeDegreesAndStyles();
    	}

    	function createLinearPathAutoGenstoryload() {
    		let tempgraph;

    		if (currentautoGeneratedGraphDataAugmented) {
    			tempgraph = JSON.parse(currentautoGeneratedGraphDataAugmented);
    		} else {
    			tempgraph = {
    				"nodes": [
    					{
    						"data": {
    							"id": "A",
    							"label": "A mysterious artifact is discovered by a local villager.",
    							"type": "event",
    							"degree": 1
    						}
    					},
    					{
    						"data": {
    							"id": "B",
    							"label": "The artifact emits a strange glow and attracts the attention of scholars.",
    							"type": "event",
    							"degree": 2
    						}
    					},
    					{
    						"data": {
    							"id": "C",
    							"label": "A renowned archaeologist uncovers ancient runes on the artifact.",
    							"type": "event",
    							"degree": 3
    						}
    					},
    					{
    						"data": {
    							"id": "D",
    							"label": "The runes reveal a hidden map to a long-lost city of treasures.",
    							"type": "event",
    							"degree": 4
    						}
    					},
    					{
    						"data": {
    							"id": "E",
    							"label": "News of the map spreads, attracting adventurers and treasure hunters.",
    							"type": "event",
    							"degree": 5
    						}
    					},
    					{
    						"data": {
    							"id": "F",
    							"label": "Alex, a young treasure hunter, decides to find the lost city.",
    							"type": "event",
    							"degree": 6
    						}
    					},
    					{
    						"data": {
    							"id": "G",
    							"label": "Alex encounters an old mentor who warns of the dangers ahead.",
    							"type": "event",
    							"degree": 7
    						}
    					},
    					{
    						"data": {
    							"id": "H",
    							"label": "Despite the warning, Alex continues the journey.",
    							"type": "event",
    							"degree": 8
    						}
    					},
    					{
    						"data": {
    							"id": "I",
    							"label": "Alex stumbles upon a hidden village with tales of the cursed city.",
    							"type": "event",
    							"degree": 9
    						}
    					},
    					{
    						"data": {
    							"id": "J",
    							"label": "Alex learns the village elder has a key to deciphering the runes.",
    							"type": "event",
    							"degree": 10
    						}
    					},
    					{
    						"data": {
    							"id": "K",
    							"label": "The elder agrees to help if Alex can prove their worth through trials.",
    							"type": "event",
    							"degree": 11
    						}
    					},
    					{
    						"data": {
    							"id": "L",
    							"label": "Alex completes the trials, earning the elder’s trust and the key.",
    							"type": "event",
    							"degree": 12
    						}
    					},
    					{
    						"data": {
    							"id": "M",
    							"label": "With the key, Alex deciphers the runes, revealing the path to the lost city.",
    							"type": "event",
    							"degree": 13
    						}
    					},
    					{
    						"data": {
    							"id": "N",
    							"label": "Alex is joined by adventurers with their own motives.",
    							"type": "event",
    							"degree": 14
    						}
    					},
    					{
    						"data": {
    							"id": "O",
    							"label": "They face numerous challenges including treacherous terrain and wild beasts.",
    							"type": "event",
    							"degree": 15
    						}
    					},
    					{
    						"data": {
    							"id": "P",
    							"label": "The group encounters a rival faction led by Zara.",
    							"type": "event",
    							"degree": 16
    						}
    					},
    					{
    						"data": {
    							"id": "Q",
    							"label": "A fierce battle ensues for the treasure and secrets of the lost city.",
    							"type": "event",
    							"degree": 17
    						}
    					},
    					{
    						"data": {
    							"id": "R",
    							"label": "Alex's group narrowly escapes, but Zara vows to claim the treasure.",
    							"type": "event",
    							"degree": 18
    						}
    					},
    					{
    						"data": {
    							"id": "S",
    							"label": "Alex discovers an ancient temple with the final clue to the lost city.",
    							"type": "event",
    							"degree": 19
    						}
    					},
    					{
    						"data": {
    							"id": "T",
    							"label": "Inside the temple, they solve puzzles and avoid traps to retrieve the clue.",
    							"type": "event",
    							"degree": 20
    						}
    					},
    					{
    						"data": {
    							"id": "U",
    							"label": "The clue leads them to the jungle where the city's entrance is concealed.",
    							"type": "event",
    							"degree": 21
    						}
    					},
    					{
    						"data": {
    							"id": "V",
    							"label": "They face a guardian spirit protecting the city's entrance.",
    							"type": "event",
    							"degree": 22
    						}
    					},
    					{
    						"data": {
    							"id": "W",
    							"label": "They outwit the guardian and gain access to the city.",
    							"type": "event",
    							"degree": 23
    						}
    					},
    					{
    						"data": {
    							"id": "X",
    							"label": "Inside the city, they uncover treasures and secrets of an ancient civilization.",
    							"type": "event",
    							"degree": 24
    						}
    					},
    					{
    						"data": {
    							"id": "Y",
    							"label": "Zara and her faction reappear, leading to a final showdown.",
    							"type": "event",
    							"degree": 25
    						}
    					},
    					{
    						"data": {
    							"id": "Z",
    							"label": "In a climactic battle, Alex’s group triumphs but at great cost.",
    							"type": "event",
    							"degree": 26
    						}
    					},
    					{
    						"data": {
    							"id": "[",
    							"label": "Alex reflects on the journey and the value of friendships.",
    							"type": "event",
    							"degree": 27
    						}
    					},
    					{
    						"data": {
    							"id": "\\",
    							"label": "They decide to leave the treasure, protecting the city's secrets.",
    							"type": "event",
    							"degree": 28
    						}
    					},
    					{
    						"data": {
    							"id": "]",
    							"label": "Alex and the adventurers return to the village, hailed as heroes.",
    							"type": "event",
    							"degree": 29
    						}
    					},
    					{
    						"data": {
    							"id": "^",
    							"label": "The village celebrates their return, and the artifact is placed in a museum.",
    							"type": "event",
    							"degree": 30
    						}
    					}
    				],
    				"edges": [
    					{
    						"data": {
    							"id": "edge1",
    							"source": "S",
    							"target": "X"
    						}
    					},
    					{
    						"data": {
    							"id": "edge2",
    							"source": "[",
    							"target": "Z"
    						}
    					},
    					{
    						"data": {
    							"id": "edge3",
    							"source": "Y",
    							"target": "W"
    						}
    					},
    					{
    						"data": {
    							"id": "edge4",
    							"source": "M",
    							"target": "L"
    						}
    					},
    					{
    						"data": {
    							"id": "edge5",
    							"source": "P",
    							"target": "\\"
    						}
    					},
    					{
    						"data": {
    							"id": "edge6",
    							"source": "Z",
    							"target": "W"
    						}
    					},
    					{
    						"data": {
    							"id": "edge7",
    							"source": "M",
    							"target": "["
    						}
    					},
    					{
    						"data": {
    							"id": "edge8",
    							"source": "G",
    							"target": "V"
    						}
    					},
    					{
    						"data": {
    							"id": "edge9",
    							"source": "O",
    							"target": "Y"
    						}
    					},
    					{
    						"data": {
    							"id": "edge10",
    							"source": "W",
    							"target": "C"
    						}
    					},
    					{
    						"data": {
    							"id": "edge11",
    							"source": "F",
    							"target": "P"
    						}
    					},
    					{
    						"data": {
    							"id": "edge12",
    							"source": "Z",
    							"target": "N"
    						}
    					},
    					{
    						"data": {
    							"id": "edge13",
    							"source": "X",
    							"target": "U"
    						}
    					},
    					{
    						"data": {
    							"id": "edge14",
    							"source": "J",
    							"target": "X"
    						}
    					},
    					{
    						"data": {
    							"id": "edge15",
    							"source": "G",
    							"target": "F"
    						}
    					},
    					{
    						"data": {
    							"id": "edge16",
    							"source": "W",
    							"target": "K"
    						}
    					},
    					{
    						"data": {
    							"id": "edge17",
    							"source": "B",
    							"target": "Z"
    						}
    					},
    					{
    						"data": {
    							"id": "edge18",
    							"source": "W",
    							"target": "H"
    						}
    					},
    					{
    						"data": {
    							"id": "edge19",
    							"source": "N",
    							"target": "F"
    						}
    					},
    					{
    						"data": {
    							"id": "edge20",
    							"source": "H",
    							"target": "W"
    						}
    					},
    					{
    						"data": {
    							"id": "edge21",
    							"source": "Q",
    							"target": "O"
    						}
    					},
    					{
    						"data": {
    							"id": "edge22",
    							"source": "F",
    							"target": "A"
    						}
    					},
    					{
    						"data": {
    							"id": "edge23",
    							"source": "]",
    							"target": "I"
    						}
    					},
    					{
    						"data": {
    							"id": "edge24",
    							"source": "W",
    							"target": "X"
    						}
    					},
    					{
    						"data": {
    							"id": "edge25",
    							"source": "[",
    							"target": "N"
    						}
    					},
    					{
    						"data": {
    							"id": "edge26",
    							"source": "M",
    							"target": "R"
    						}
    					},
    					{
    						"data": {
    							"id": "edge27",
    							"source": "K",
    							"target": "V"
    						}
    					},
    					{
    						"data": {
    							"id": "edge28",
    							"source": "P",
    							"target": "A"
    						}
    					},
    					{
    						"data": {
    							"id": "edge29",
    							"source": "U",
    							"target": "D"
    						}
    					},
    					{
    						"data": {
    							"id": "edge30",
    							"source": "S",
    							"target": "O"
    						}
    					},
    					{
    						"data": {
    							"id": "edge31",
    							"source": "N",
    							"target": "M"
    						}
    					},
    					{
    						"data": {
    							"id": "edge32",
    							"source": "V",
    							"target": "B"
    						}
    					},
    					{
    						"data": {
    							"id": "edge33",
    							"source": "P",
    							"target": "U"
    						}
    					},
    					{
    						"data": {
    							"id": "edge34",
    							"source": "T",
    							"target": "R"
    						}
    					},
    					{
    						"data": {
    							"id": "edge35",
    							"source": "P",
    							"target": "M"
    						}
    					},
    					{
    						"data": {
    							"id": "edge36",
    							"source": "U",
    							"target": "H"
    						}
    					},
    					{
    						"data": {
    							"id": "edge37",
    							"source": "[",
    							"target": "A"
    						}
    					},
    					{
    						"data": {
    							"id": "edge38",
    							"source": "[",
    							"target": "E"
    						}
    					},
    					{
    						"data": {
    							"id": "edge39",
    							"source": "^",
    							"target": "D"
    						}
    					},
    					{
    						"data": {
    							"id": "edge40",
    							"source": "P",
    							"target": "A"
    						}
    					}
    				]
    			};
    		}

    		cy.json({
    			elements: tempgraph,
    			style: [
    				{
    					selector: 'node',
    					style: {
    						'label': 'data(label)',
    						'text-valign': 'center',
    						'color': '#000',
    						'background-color': '#61bffc',
    						'text-outline-width': 2,
    						'text-outline-color': '#fff'
    					}
    				},
    				{
    					selector: 'edge',
    					style: {
    						'width': 3,
    						'line-color': '#ccc',
    						'target-arrow-color': '#ccc',
    						'target-arrow-shape': 'triangle',
    						'curve-style': 'bezier'
    					}
    				}
    			],
    			layout: {
    				//rows: Math.ceil(Math.sqrt(timeline.nodes.length)),
    				name: 'cose',
    				animate: true, // Set to true for smooth transitions
    				fit: true, // Whether to fit the network view after when done
    				padding: 30, // Padding on fit
    				nodeRepulsion: 400000, // Node repulsion (non overlapping) multiplier
    				idealEdgeLength: 100, // Ideal edge (non nested) length
    				edgeElasticity: 100, // Divisor to compute edge forces
    				gravity: 80, // Gravity force (constant)
    				numIter: 1000, // Number of iterations to perform
    				initialTemp: 200, // Initial temperature for cooling
    				coolingFactor: 0.95, // Cooling factor (how much to reduce temperature each iteration)
    				minTemp: 1.0, // Minimum temperature for cooling
    				
    			}
    		}); ////elements: { nodes, edges } });

    		cy.nodes().on('grab', function (event) {
    			const node = event.target;

    			node.on('free', function (event) {
    				cy.layout({
    					name: 'cose',
    					animate: false,
    					fit: true,
    					padding: 30,
    					nodeRepulsion: 400000,
    					idealEdgeLength: 100,
    					edgeElasticity: 100,
    					gravity: 80,
    					numIter: 1000,
    					initialTemp: 200,
    					coolingFactor: 0.95,
    					minTemp: 1.0
    				}).run();
    			});
    		});

    		// cy.nodes().forEach(function(node){
    		//     node.qtip({
    		//         content: node.data('label'),
    		//         position: {
    		//             my: 'top center',
    		//             at: 'bottom center'
    		//         },
    		//         style: {
    		//             classes: 'qtip-bootstrap',
    		//             tip: {
    		//                 width: 16,
    		//                 height: 8
    		//             }
    		//         }
    		//     });
    		// });
    		updateNodesList();

    		updateNodeDegreesAndStyles();

    		//const storyJSONgraphdata = generateTimelineinGraph(7, 10);
    		console.log(tempgraph);

    		const storyJSON = createStoryParts(tempgraph); //.nodes, storyJSONgraphdata.edges);

    		//console.log(storyJSONgraphdata);
    		console.log(storyJSON);

    		const stateMachineModalConfig = createStateMachine(tempgraph);
    		console.log(stateMachineModalConfig);

    		try {
    			autogenconfigtestsmmdoalfromgraph.update(currentstoreconfig => {
    				return {
    					...currentstoreconfig,
    					story: [
    						{
    							...currentstoreconfig.story[0],
    							targets: [...currentstoreconfig.story[0].targets, stateMachineModalConfig]
    						},
    						...currentstoreconfig.story.slice(1)
    					]
    				};
    			});
    		} catch(e) {
    			alert('Error updating config object');
    		}

    		console.log(get_store_value(autogenconfigtestsmmdoalfromgraph));
    	}

    	function resetGraph() {
    		cy.json({
    			elements: resetGraphData,
    			style: [
    				{
    					selector: 'node',
    					style: {
    						'label': 'data(label)',
    						'text-valign': 'center',
    						'color': '#000',
    						'background-color': '#61bffc',
    						'text-outline-width': 2,
    						'text-outline-color': '#fff'
    					}
    				},
    				{
    					selector: 'edge',
    					style: {
    						'width': 3,
    						'line-color': '#ccc',
    						'target-arrow-color': '#ccc',
    						'target-arrow-shape': 'triangle',
    						'curve-style': 'bezier'
    					}
    				}
    			],
    			layout: {
    				//rows: Math.ceil(Math.sqrt(timeline.nodes.length)),
    				name: 'cose',
    				animate: true, // Set to true for smooth transitions
    				fit: true, // Whether to fit the network view after when done
    				padding: 30, // Padding on fit
    				nodeRepulsion: 400000, // Node repulsion (non overlapping) multiplier
    				idealEdgeLength: 100, // Ideal edge (non nested) length
    				edgeElasticity: 100, // Divisor to compute edge forces
    				gravity: 80, // Gravity force (constant)
    				numIter: 1000, // Number of iterations to perform
    				initialTemp: 200, // Initial temperature for cooling
    				coolingFactor: 0.95, // Cooling factor (how much to reduce temperature each iteration)
    				minTemp: 1.0, // Minimum temperature for cooling
    				
    			}
    		}); ////elements: { nodes, edges } });

    		cy.nodes().on('grab', function (event) {
    			const node = event.target;

    			node.on('free', function (event) {
    				cy.layout({
    					name: 'cose',
    					animate: false,
    					fit: true,
    					padding: 30,
    					nodeRepulsion: 400000,
    					idealEdgeLength: 100,
    					edgeElasticity: 100,
    					gravity: 80,
    					numIter: 1000,
    					initialTemp: 200,
    					coolingFactor: 0.95,
    					minTemp: 1.0
    				}).run();
    			});
    		});
    	}

    	function copycurrentautoGeneratedGraphData() {
    		copydatatoclipboard(currentautoGeneratedGraphData);
    		alert('Graph data copied to clipboard');
    	}

    	const writable_props = [];

    	Object_1$4.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$9.warn(`<GraphwithStoryStructureIdeas> was created with unknown prop '${key}'`);
    	});

    	const click_handler = () => cy.fit();

    	function input1_input_handler() {
    		autonodes = to_number(this.value);
    		$$invalidate(8, autonodes);
    	}

    	function input2_input_handler() {
    		autoedges = to_number(this.value);
    		$$invalidate(9, autoedges);
    	}

    	function textarea_input_handler() {
    		currentautoGeneratedGraphDataAugmented = this.value;
    		$$invalidate(10, currentautoGeneratedGraphDataAugmented);
    	}

    	function input3_input_handler() {
    		newNodeId = this.value;
    		$$invalidate(2, newNodeId);
    	}

    	function input4_input_handler() {
    		newNodeLabel = this.value;
    		$$invalidate(3, newNodeLabel);
    	}

    	function select0_change_handler() {
    		newNodeType = select_value(this);
    		$$invalidate(4, newNodeType);
    	}

    	function input5_input_handler() {
    		newEdgeId = this.value;
    		$$invalidate(5, newEdgeId);
    	}

    	function select1_change_handler() {
    		newEdgeSource = select_value(this);
    		$$invalidate(6, newEdgeSource);
    		$$invalidate(11, nodes);
    	}

    	function select2_change_handler() {
    		newEdgeTarget = select_value(this);
    		$$invalidate(7, newEdgeTarget);
    		$$invalidate(11, nodes);
    	}

    	function div5_binding($$value) {
    		binding_callbacks[$$value ? 'unshift' : 'push'](() => {
    			graphcontainer = $$value;
    			$$invalidate(1, graphcontainer);
    		});
    	}

    	$$self.$capture_state = () => ({
    		onMount,
    		cytoscape,
    		JSZip,
    		autogenconfigtestsmmdoalfromgraph,
    		get: get_store_value,
    		cy,
    		graphcontainer,
    		newNodeId,
    		newNodeLabel,
    		newNodeType,
    		newEdgeId,
    		newEdgeSource,
    		newEdgeTarget,
    		resetGraphData,
    		autonodes,
    		autoedges,
    		currentautoGeneratedGraphData,
    		currentautoGeneratedGraphDataAugmented,
    		nodes,
    		currentautoexpandGraphData,
    		graphData,
    		autostoryData,
    		updateNodesList,
    		updateNodeDegreesAndStyles,
    		addNode,
    		addEdge,
    		generateStoryData,
    		traverseAndGenerateStoryData,
    		saveGraph,
    		loadGraph,
    		autoGenerateGraphData,
    		generateTimelineinGraph,
    		timeline,
    		generateAndLoadGraphData,
    		createBranchingPath,
    		createBranchingPathadditive,
    		createLinearPath,
    		createAutoGenGraphdata,
    		createLinearPathAutoGenstoryload,
    		createStoryParts,
    		GraphtoJSONConfig,
    		createStateMachine,
    		GraphtoJSONConfigStatemachineModal,
    		resetGraph,
    		copydatatoclipboard,
    		copycurrentautoGeneratedGraphData
    	});

    	$$self.$inject_state = $$props => {
    		if ('cy' in $$props) $$invalidate(0, cy = $$props.cy);
    		if ('graphcontainer' in $$props) $$invalidate(1, graphcontainer = $$props.graphcontainer);
    		if ('newNodeId' in $$props) $$invalidate(2, newNodeId = $$props.newNodeId);
    		if ('newNodeLabel' in $$props) $$invalidate(3, newNodeLabel = $$props.newNodeLabel);
    		if ('newNodeType' in $$props) $$invalidate(4, newNodeType = $$props.newNodeType);
    		if ('newEdgeId' in $$props) $$invalidate(5, newEdgeId = $$props.newEdgeId);
    		if ('newEdgeSource' in $$props) $$invalidate(6, newEdgeSource = $$props.newEdgeSource);
    		if ('newEdgeTarget' in $$props) $$invalidate(7, newEdgeTarget = $$props.newEdgeTarget);
    		if ('resetGraphData' in $$props) resetGraphData = $$props.resetGraphData;
    		if ('autonodes' in $$props) $$invalidate(8, autonodes = $$props.autonodes);
    		if ('autoedges' in $$props) $$invalidate(9, autoedges = $$props.autoedges);
    		if ('currentautoGeneratedGraphData' in $$props) currentautoGeneratedGraphData = $$props.currentautoGeneratedGraphData;
    		if ('currentautoGeneratedGraphDataAugmented' in $$props) $$invalidate(10, currentautoGeneratedGraphDataAugmented = $$props.currentautoGeneratedGraphDataAugmented);
    		if ('nodes' in $$props) $$invalidate(11, nodes = $$props.nodes);
    		if ('currentautoexpandGraphData' in $$props) currentautoexpandGraphData = $$props.currentautoexpandGraphData;
    		if ('graphData' in $$props) graphData = $$props.graphData;
    		if ('autostoryData' in $$props) autostoryData = $$props.autostoryData;
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		cy,
    		graphcontainer,
    		newNodeId,
    		newNodeLabel,
    		newNodeType,
    		newEdgeId,
    		newEdgeSource,
    		newEdgeTarget,
    		autonodes,
    		autoedges,
    		currentautoGeneratedGraphDataAugmented,
    		nodes,
    		addNode,
    		addEdge,
    		traverseAndGenerateStoryData,
    		saveGraph,
    		loadGraph,
    		generateAndLoadGraphData,
    		createBranchingPathadditive,
    		createAutoGenGraphdata,
    		createLinearPathAutoGenstoryload,
    		resetGraph,
    		copycurrentautoGeneratedGraphData,
    		click_handler,
    		input1_input_handler,
    		input2_input_handler,
    		textarea_input_handler,
    		input3_input_handler,
    		input4_input_handler,
    		select0_change_handler,
    		input5_input_handler,
    		select1_change_handler,
    		select2_change_handler,
    		div5_binding
    	];
    }

    class GraphwithStoryStructureIdeas extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$m, create_fragment$m, safe_not_equal, {}, null, [-1, -1]);

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "GraphwithStoryStructureIdeas",
    			options,
    			id: create_fragment$m.name
    		});
    	}
    }

    /* src\MovingDotSpaceThemeManager.svelte generated by Svelte v3.59.2 */
    const file$l = "src\\MovingDotSpaceThemeManager.svelte";

    // (98:4) <SimpleCollapsible title="Streamlined Config Steps">
    function create_default_slot_4$1(ctx) {
    	let customgameconfighelper;
    	let current;
    	customgameconfighelper = new CustomGameConfigHelper({ $$inline: true });

    	const block = {
    		c: function create() {
    			create_component(customgameconfighelper.$$.fragment);
    		},
    		m: function mount(target, anchor) {
    			mount_component(customgameconfighelper, target, anchor);
    			current = true;
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(customgameconfighelper.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(customgameconfighelper.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			destroy_component(customgameconfighelper, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_default_slot_4$1.name,
    		type: "slot",
    		source: "(98:4) <SimpleCollapsible title=\\\"Streamlined Config Steps\\\">",
    		ctx
    	});

    	return block;
    }

    // (102:4) <SimpleCollapsible title="Incomplete Story structure and Timeline suggestion engines">
    function create_default_slot_3$1(ctx) {
    	let hr;
    	let t0;
    	let br0;
    	let t1;
    	let br1;
    	let t2;
    	let brainstormstatetransitionsrandom;
    	let current;
    	brainstormstatetransitionsrandom = new BrainstormStateTransitionsRandom({ $$inline: true });

    	const block = {
    		c: function create() {
    			hr = element$1("hr");
    			t0 = text("\r\n        Early Sequence examples - \r\n        ");
    			br0 = element$1("br");
    			t1 = text("Write a story where the main event are in this order: gosomewhere getsomething makeobservation getsomething talktosomeone makeobservation getsomething talktosomeone gosomewhere fight talktosomeone fight fight talktosomeone talktosomeone talktosomeone gosomewhere talktosomeone\r\n        ");
    			br1 = element$1("br");
    			t2 = text("lets write the story to fit this order - stats location stats inventory stats location location skills inventory stats inventory skills skills skills stats stats skills\r\n        \r\n        ");
    			create_component(brainstormstatetransitionsrandom.$$.fragment);
    			add_location(hr, file$l, 102, 8, 4757);
    			add_location(br0, file$l, 104, 8, 4807);
    			add_location(br1, file$l, 105, 8, 5097);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, hr, anchor);
    			insert_dev(target, t0, anchor);
    			insert_dev(target, br0, anchor);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, br1, anchor);
    			insert_dev(target, t2, anchor);
    			mount_component(brainstormstatetransitionsrandom, target, anchor);
    			current = true;
    		},
    		p: noop$2,
    		i: function intro(local) {
    			if (current) return;
    			transition_in(brainstormstatetransitionsrandom.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(brainstormstatetransitionsrandom.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(hr);
    			if (detaching) detach_dev(t0);
    			if (detaching) detach_dev(br0);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(br1);
    			if (detaching) detach_dev(t2);
    			destroy_component(brainstormstatetransitionsrandom, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_default_slot_3$1.name,
    		type: "slot",
    		source: "(102:4) <SimpleCollapsible title=\\\"Incomplete Story structure and Timeline suggestion engines\\\">",
    		ctx
    	});

    	return block;
    }

    // (111:4) <SimpleCollapsible title="Incomplete Graph based story structure planner">
    function create_default_slot_2$1(ctx) {
    	let graphwithstorystructureideas;
    	let current;
    	graphwithstorystructureideas = new GraphwithStoryStructureIdeas({ $$inline: true });

    	const block = {
    		c: function create() {
    			create_component(graphwithstorystructureideas.$$.fragment);
    		},
    		m: function mount(target, anchor) {
    			mount_component(graphwithstorystructureideas, target, anchor);
    			current = true;
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(graphwithstorystructureideas.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(graphwithstorystructureideas.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			destroy_component(graphwithstorystructureideas, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_default_slot_2$1.name,
    		type: "slot",
    		source: "(111:4) <SimpleCollapsible title=\\\"Incomplete Graph based story structure planner\\\">",
    		ctx
    	});

    	return block;
    }

    // (73:0) <SimpleCollapsible title="Config Customisation Assistant - Semi Automated - WIP">
    function create_default_slot_1$1(ctx) {
    	let t0;
    	let hr;
    	let t1;
    	let simplecollapsible0;
    	let t2;
    	let simplecollapsible1;
    	let t3;
    	let simplecollapsible2;
    	let current;

    	simplecollapsible0 = new SimpleCollapsible({
    			props: {
    				title: "Streamlined Config Steps",
    				$$slots: { default: [create_default_slot_4$1] },
    				$$scope: { ctx }
    			},
    			$$inline: true
    		});

    	simplecollapsible1 = new SimpleCollapsible({
    			props: {
    				title: "Incomplete Story structure and Timeline suggestion engines",
    				$$slots: { default: [create_default_slot_3$1] },
    				$$scope: { ctx }
    			},
    			$$inline: true
    		});

    	simplecollapsible2 = new SimpleCollapsible({
    			props: {
    				title: "Incomplete Graph based story structure planner",
    				$$slots: { default: [create_default_slot_2$1] },
    				$$scope: { ctx }
    			},
    			$$inline: true
    		});

    	const block = {
    		c: function create() {
    			t0 = text("Currently the state machine is the json config -  Story parts / target type controlled by switch case for collisions and smmodal (state machine modal as the targets all have to a transitions field) (modals and smmodals not yet part of randomisers below)\r\n    ");
    			hr = element$1("hr");
    			t1 = text("\r\n    Incomplete/Unpolished Custom game setting assistant\r\n    \r\n    \r\n\r\n    \r\n\r\n    \r\n    \r\n\r\n    \r\n    \r\n    ");
    			create_component(simplecollapsible0.$$.fragment);
    			t2 = space();
    			create_component(simplecollapsible1.$$.fragment);
    			t3 = space();
    			create_component(simplecollapsible2.$$.fragment);
    			add_location(hr, file$l, 74, 4, 3427);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, t0, anchor);
    			insert_dev(target, hr, anchor);
    			insert_dev(target, t1, anchor);
    			mount_component(simplecollapsible0, target, anchor);
    			insert_dev(target, t2, anchor);
    			mount_component(simplecollapsible1, target, anchor);
    			insert_dev(target, t3, anchor);
    			mount_component(simplecollapsible2, target, anchor);
    			current = true;
    		},
    		p: function update(ctx, dirty) {
    			const simplecollapsible0_changes = {};

    			if (dirty & /*$$scope*/ 8192) {
    				simplecollapsible0_changes.$$scope = { dirty, ctx };
    			}

    			simplecollapsible0.$set(simplecollapsible0_changes);
    			const simplecollapsible1_changes = {};

    			if (dirty & /*$$scope*/ 8192) {
    				simplecollapsible1_changes.$$scope = { dirty, ctx };
    			}

    			simplecollapsible1.$set(simplecollapsible1_changes);
    			const simplecollapsible2_changes = {};

    			if (dirty & /*$$scope*/ 8192) {
    				simplecollapsible2_changes.$$scope = { dirty, ctx };
    			}

    			simplecollapsible2.$set(simplecollapsible2_changes);
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(simplecollapsible0.$$.fragment, local);
    			transition_in(simplecollapsible1.$$.fragment, local);
    			transition_in(simplecollapsible2.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(simplecollapsible0.$$.fragment, local);
    			transition_out(simplecollapsible1.$$.fragment, local);
    			transition_out(simplecollapsible2.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(t0);
    			if (detaching) detach_dev(hr);
    			if (detaching) detach_dev(t1);
    			destroy_component(simplecollapsible0, detaching);
    			if (detaching) detach_dev(t2);
    			destroy_component(simplecollapsible1, detaching);
    			if (detaching) detach_dev(t3);
    			destroy_component(simplecollapsible2, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_default_slot_1$1.name,
    		type: "slot",
    		source: "(73:0) <SimpleCollapsible title=\\\"Config Customisation Assistant - Semi Automated - WIP\\\">",
    		ctx
    	});

    	return block;
    }

    // (117:0) <SimpleCollapsible title="Config Manual Considerations - WIP">
    function create_default_slot$2(ctx) {
    	let t0;
    	let br;
    	let t1;

    	const block = {
    		c: function create() {
    			t0 = text("Steps (Order not optimised yet)\r\n    ");
    			br = element$1("br");
    			t1 = text("Story (order of events) random order generator as strating point, foreshadowing points added back after story finished --- Game Mechanics (order of UI elements and off screen controls for corresponding story event, esp. every significant verb in the story) --- User driven Attributes (Skills/Stats/Inventory)");
    			add_location(br, file$l, 118, 4, 5634);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, t0, anchor);
    			insert_dev(target, br, anchor);
    			insert_dev(target, t1, anchor);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(t0);
    			if (detaching) detach_dev(br);
    			if (detaching) detach_dev(t1);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_default_slot$2.name,
    		type: "slot",
    		source: "(117:0) <SimpleCollapsible title=\\\"Config Manual Considerations - WIP\\\">",
    		ctx
    	});

    	return block;
    }

    function create_fragment$l(ctx) {
    	let simplecollapsible0;
    	let t0;
    	let simplecollapsible1;
    	let t1;
    	let hr0;
    	let t2;
    	let hr1;
    	let t3;
    	let div3;
    	let div0;
    	let t4;
    	let br0;
    	let t5;
    	let br1;
    	let t6;
    	let br2;
    	let t7;
    	let br3;
    	let t8;
    	let t9;
    	let div1;
    	let t10;
    	let br4;
    	let t11;
    	let br5;
    	let t12;
    	let t13;
    	let div2;
    	let t14;
    	let t15;
    	let br6;
    	let t16;
    	let current;

    	simplecollapsible0 = new SimpleCollapsible({
    			props: {
    				title: "Config Customisation Assistant - Semi Automated - WIP",
    				$$slots: { default: [create_default_slot_1$1] },
    				$$scope: { ctx }
    			},
    			$$inline: true
    		});

    	simplecollapsible1 = new SimpleCollapsible({
    			props: {
    				title: "Config Manual Considerations - WIP",
    				$$slots: { default: [create_default_slot$2] },
    				$$scope: { ctx }
    			},
    			$$inline: true
    		});

    	const block = {
    		c: function create() {
    			create_component(simplecollapsible0.$$.fragment);
    			t0 = space();
    			create_component(simplecollapsible1.$$.fragment);
    			t1 = space();
    			hr0 = element$1("hr");
    			t2 = text("\r\n\r\nCan turn vibe / adjectives of songs into character ideas -- existing or make song with AI as player theme \r\n\r\n");
    			hr1 = element$1("hr");
    			t3 = text("\r\nNext Is autogenerate + extract + llm api call for the JSON snippet + Merge in one button press + load into game component for testing + Sequence generate built into autogenerate json as an option (sequence becomes the placeholder text)\r\n\r\n");
    			div3 = element$1("div");
    			div0 = element$1("div");
    			t4 = text("TODO - ");
    			br0 = element$1("br");
    			t5 = text(" Simplify Theme Manager ");
    			br1 = element$1("br");
    			t6 = text(" Fix state transition and game mechanic integration ");
    			br2 = element$1("br");
    			t7 = text(" Flesh out Iframe modal gameplay eg. youtube video as an item and llm judge ");
    			br3 = element$1("br");
    			t8 = text(" each transition = new picture and any custom setup for components");
    			t9 = space();
    			div1 = element$1("div");
    			t10 = text("Website = multilingual support in chrome (when running locally) ");
    			br4 = element$1("br");
    			t11 = text("\r\n        The mechanics here are location based so story should be location based ");
    			br5 = element$1("br");
    			t12 = text("\r\n        Simultaneous relationships between multiple items = complexity - eg. player location and objectives");
    			t13 = space();
    			div2 = element$1("div");
    			t14 = text(/*ChangedContentPlaceholder*/ ctx[0]);
    			t15 = space();
    			br6 = element$1("br");
    			t16 = text("\r\n        Most stories for games are about a character that lacks something to beat their problems and the 90% inbetween the begining and the end is acquiring");
    			add_location(hr0, file$l, 121, 0, 5973);
    			add_location(hr1, file$l, 125, 0, 6091);
    			add_location(br0, file$l, 131, 15, 6403);
    			add_location(br1, file$l, 131, 43, 6431);
    			add_location(br2, file$l, 131, 99, 6487);
    			add_location(br3, file$l, 131, 179, 6567);
    			add_location(div0, file$l, 130, 4, 6381);
    			add_location(br4, file$l, 135, 72, 6736);
    			add_location(br5, file$l, 136, 80, 6822);
    			add_location(div1, file$l, 134, 4, 6657);
    			add_location(br6, file$l, 141, 38, 7000);
    			add_location(div2, file$l, 140, 4, 6955);
    			attr_dev(div3, "class", "grid-themegridContainer svelte-qg4vfk");
    			add_location(div3, file$l, 128, 0, 6336);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			mount_component(simplecollapsible0, target, anchor);
    			insert_dev(target, t0, anchor);
    			mount_component(simplecollapsible1, target, anchor);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, hr0, anchor);
    			insert_dev(target, t2, anchor);
    			insert_dev(target, hr1, anchor);
    			insert_dev(target, t3, anchor);
    			insert_dev(target, div3, anchor);
    			append_dev(div3, div0);
    			append_dev(div0, t4);
    			append_dev(div0, br0);
    			append_dev(div0, t5);
    			append_dev(div0, br1);
    			append_dev(div0, t6);
    			append_dev(div0, br2);
    			append_dev(div0, t7);
    			append_dev(div0, br3);
    			append_dev(div0, t8);
    			append_dev(div3, t9);
    			append_dev(div3, div1);
    			append_dev(div1, t10);
    			append_dev(div1, br4);
    			append_dev(div1, t11);
    			append_dev(div1, br5);
    			append_dev(div1, t12);
    			append_dev(div3, t13);
    			append_dev(div3, div2);
    			append_dev(div2, t14);
    			append_dev(div2, t15);
    			append_dev(div2, br6);
    			append_dev(div2, t16);
    			current = true;
    		},
    		p: function update(ctx, [dirty]) {
    			const simplecollapsible0_changes = {};

    			if (dirty & /*$$scope*/ 8192) {
    				simplecollapsible0_changes.$$scope = { dirty, ctx };
    			}

    			simplecollapsible0.$set(simplecollapsible0_changes);
    			const simplecollapsible1_changes = {};

    			if (dirty & /*$$scope*/ 8192) {
    				simplecollapsible1_changes.$$scope = { dirty, ctx };
    			}

    			simplecollapsible1.$set(simplecollapsible1_changes);
    			if (!current || dirty & /*ChangedContentPlaceholder*/ 1) set_data_dev(t14, /*ChangedContentPlaceholder*/ ctx[0]);
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(simplecollapsible0.$$.fragment, local);
    			transition_in(simplecollapsible1.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(simplecollapsible0.$$.fragment, local);
    			transition_out(simplecollapsible1.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			destroy_component(simplecollapsible0, detaching);
    			if (detaching) detach_dev(t0);
    			destroy_component(simplecollapsible1, detaching);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(hr0);
    			if (detaching) detach_dev(t2);
    			if (detaching) detach_dev(hr1);
    			if (detaching) detach_dev(t3);
    			if (detaching) detach_dev(div3);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$l.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$l($$self, $$props, $$invalidate) {
    	let $targets;
    	let $objectives;
    	let $skills;
    	let $inventory;
    	validate_store(targets, 'targets');
    	component_subscribe($$self, targets, $$value => $$invalidate(4, $targets = $$value));
    	validate_store(objectives, 'objectives');
    	component_subscribe($$self, objectives, $$value => $$invalidate(5, $objectives = $$value));
    	validate_store(skills, 'skills');
    	component_subscribe($$self, skills, $$value => $$invalidate(6, $skills = $$value));
    	validate_store(inventory, 'inventory');
    	component_subscribe($$self, inventory, $$value => $$invalidate(7, $inventory = $$value));
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('MovingDotSpaceThemeManager', slots, []);
    	let { ChangedContentPlaceholder = "" } = $$props;
    	let newItem = { type: "", name: "", description: "" };
    	let newSkill = { branch: "", name: "", learned: false };
    	let newObjective = { branch: "", name: "", complete: false };

    	// ... similarly for targets
    	function addItem() {
    		inventory.update(items => [...items, newItem]);
    		newItem = { type: "", name: "", description: "" }; // Reset form
    	}

    	function addSkill() {
    		skills.update(skills => [...skills, newSkill]);
    		newSkill = { branch: "", name: "", learned: false }; // Reset form
    	}

    	function addObjective() {
    		objectives.update(objectives => [...objectives, newObjective]);
    		newObjective = { branch: "", name: "", complete: false }; // Reset form
    	}

    	// ... similarly for targets
    	// Functions to save and load configurations to/from localStorage or a backend would also be defined here
    	// Function to download the current configuration as a JSON file
    	function downloadConfiguration() {
    		const gameConfig = {
    			inventory: $inventory,
    			skills: $skills,
    			objectives: $objectives,
    			targets: $targets
    		};

    		const blob = new Blob([JSON.stringify(gameConfig, null, 2)], { type: 'application/json' });
    		const href = URL.createObjectURL(blob);
    		const link = document.createElement('a');
    		link.href = href;
    		link.download = 'gameConfig.json';
    		document.body.appendChild(link);
    		link.click();
    		document.body.removeChild(link);
    	}

    	// Function to load configuration from an uploaded JSON file
    	function handleFileUpload(event) {
    		const file = event.target.files[0];

    		if (file) {
    			const reader = new FileReader();

    			reader.onload = e => {
    				const fileContent = e.target.result;
    				const { inventory: loadedInventory, skills: loadedSkills, objectives: loadedObjectives, targets: loadedTargets } = JSON.parse(fileContent);
    				inventory.set(loadedInventory);
    				skills.set(loadedSkills);
    				objectives.set(loadedObjectives);
    				targets.set(loadedTargets);
    				alert('Configuration loaded!');
    			};

    			reader.readAsText(file);
    		}
    	}

    	const writable_props = ['ChangedContentPlaceholder'];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<MovingDotSpaceThemeManager> was created with unknown prop '${key}'`);
    	});

    	$$self.$$set = $$props => {
    		if ('ChangedContentPlaceholder' in $$props) $$invalidate(0, ChangedContentPlaceholder = $$props.ChangedContentPlaceholder);
    	};

    	$$self.$capture_state = () => ({
    		ChangedContentPlaceholder,
    		inventory,
    		skills,
    		objectives,
    		targets,
    		SimpleCollapsible,
    		BrainstormGameConfigsRandom,
    		BrainstormStateTransitionsRandom,
    		Testbrainstorminstantpopulate,
    		Testjsonmatchingfieldmerge,
    		CustomGameConfigHelper,
    		GraphwithStoryStructureIdeas,
    		newItem,
    		newSkill,
    		newObjective,
    		addItem,
    		addSkill,
    		addObjective,
    		downloadConfiguration,
    		handleFileUpload,
    		$targets,
    		$objectives,
    		$skills,
    		$inventory
    	});

    	$$self.$inject_state = $$props => {
    		if ('ChangedContentPlaceholder' in $$props) $$invalidate(0, ChangedContentPlaceholder = $$props.ChangedContentPlaceholder);
    		if ('newItem' in $$props) newItem = $$props.newItem;
    		if ('newSkill' in $$props) newSkill = $$props.newSkill;
    		if ('newObjective' in $$props) newObjective = $$props.newObjective;
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [ChangedContentPlaceholder];
    }

    class MovingDotSpaceThemeManager extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$l, create_fragment$l, safe_not_equal, { ChangedContentPlaceholder: 0 });

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "MovingDotSpaceThemeManager",
    			options,
    			id: create_fragment$l.name
    		});
    	}

    	get ChangedContentPlaceholder() {
    		throw new Error("<MovingDotSpaceThemeManager>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set ChangedContentPlaceholder(value) {
    		throw new Error("<MovingDotSpaceThemeManager>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}
    }

    /* src\MovingDotSpaceGameFight.svelte generated by Svelte v3.59.2 */

    const file$k = "src\\MovingDotSpaceGameFight.svelte";

    // (115:8) {#if $fightcurrentTurn === 'human' && !gameOver}
    function create_if_block$b(ctx) {
    	let button0;
    	let t1;
    	let button1;
    	let t3;
    	let button2;
    	let mounted;
    	let dispose;

    	const block_1 = {
    		c: function create() {
    			button0 = element$1("button");
    			button0.textContent = "Attack";
    			t1 = space();
    			button1 = element$1("button");
    			button1.textContent = "Special Attack";
    			t3 = space();
    			button2 = element$1("button");
    			button2.textContent = "Block";
    			add_location(button0, file$k, 115, 12, 3914);
    			add_location(button1, file$k, 116, 12, 4021);
    			add_location(button2, file$k, 117, 12, 4147);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button0, anchor);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, button1, anchor);
    			insert_dev(target, t3, anchor);
    			insert_dev(target, button2, anchor);

    			if (!mounted) {
    				dispose = [
    					listen_dev(button0, "click", /*click_handler*/ ctx[6], false, false, false, false),
    					listen_dev(button1, "click", /*click_handler_1*/ ctx[7], false, false, false, false),
    					listen_dev(button2, "click", /*click_handler_2*/ ctx[8], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button0);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(button1);
    			if (detaching) detach_dev(t3);
    			if (detaching) detach_dev(button2);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block: block_1,
    		id: create_if_block$b.name,
    		type: "if",
    		source: "(115:8) {#if $fightcurrentTurn === 'human' && !gameOver}",
    		ctx
    	});

    	return block_1;
    }

    function create_fragment$k(ctx) {
    	let div4;
    	let div0;
    	let t0;
    	let br0;
    	let t1;
    	let t2_value = /*$fightplayerHuman*/ ctx[2].fighthealth + "";
    	let t2;
    	let t3;
    	let br1;
    	let t4;
    	let t5_value = /*$fightplayerHuman*/ ctx[2].fightstamina + "";
    	let t5;
    	let t6;
    	let br2;
    	let t7;

    	let t8_value = (/*$fightplayerHuman*/ ctx[2].fightisBlocking
    	? 'Blocking'
    	: '') + "";

    	let t8;
    	let t9;
    	let br3;
    	let t10;
    	let t11_value = /*$fightplayerHuman*/ ctx[2].fightcooldowns.attack + "";
    	let t11;
    	let t12;
    	let br4;
    	let t13;
    	let div2;
    	let div1;

    	let t14_value = (/*gameOver*/ ctx[0]
    	? "Game Over"
    	: /*$fightcurrentTurn*/ ctx[3] === 'human'
    		? "Your turn"
    		: "Computer's turn") + "";

    	let t14;
    	let t15;
    	let t16;
    	let div3;
    	let t17;
    	let br5;
    	let t18;
    	let t19_value = /*$fightplayerComputer*/ ctx[1].fighthealth + "";
    	let t19;
    	let t20;
    	let br6;
    	let t21;
    	let t22_value = /*$fightplayerComputer*/ ctx[1].fightstamina + "";
    	let t22;
    	let t23;
    	let br7;
    	let t24;

    	let t25_value = (/*$fightplayerComputer*/ ctx[1].fightisBlocking
    	? 'Blocking'
    	: '') + "";

    	let t25;
    	let t26;
    	let br8;
    	let t27;
    	let t28_value = /*$fightplayerComputer*/ ctx[1].fightcooldowns.attack + "";
    	let t28;
    	let t29;
    	let br9;
    	let if_block = /*$fightcurrentTurn*/ ctx[3] === 'human' && !/*gameOver*/ ctx[0] && create_if_block$b(ctx);

    	const block_1 = {
    		c: function create() {
    			div4 = element$1("div");
    			div0 = element$1("div");
    			t0 = text("Player 1 ");
    			br0 = element$1("br");
    			t1 = text("\r\n        Health: ");
    			t2 = text(t2_value);
    			t3 = space();
    			br1 = element$1("br");
    			t4 = text("\r\n        Stamina: ");
    			t5 = text(t5_value);
    			t6 = space();
    			br2 = element$1("br");
    			t7 = space();
    			t8 = text(t8_value);
    			t9 = space();
    			br3 = element$1("br");
    			t10 = text("\r\n        Cooldown: Attack - ");
    			t11 = text(t11_value);
    			t12 = text("s ");
    			br4 = element$1("br");
    			t13 = space();
    			div2 = element$1("div");
    			div1 = element$1("div");
    			t14 = text(t14_value);
    			t15 = space();
    			if (if_block) if_block.c();
    			t16 = space();
    			div3 = element$1("div");
    			t17 = text("Player 2 ");
    			br5 = element$1("br");
    			t18 = text("\r\n        Health: ");
    			t19 = text(t19_value);
    			t20 = space();
    			br6 = element$1("br");
    			t21 = text("\r\n        Stamina: ");
    			t22 = text(t22_value);
    			t23 = space();
    			br7 = element$1("br");
    			t24 = space();
    			t25 = text(t25_value);
    			t26 = space();
    			br8 = element$1("br");
    			t27 = text("\r\n        Cooldown: Attack - ");
    			t28 = text(t28_value);
    			t29 = text("s ");
    			br9 = element$1("br");
    			add_location(br0, file$k, 103, 17, 3422);
    			add_location(br1, file$k, 104, 48, 3476);
    			add_location(br2, file$k, 105, 50, 3532);
    			add_location(br3, file$k, 106, 62, 3600);
    			add_location(br4, file$k, 107, 70, 3676);
    			add_location(div0, file$k, 102, 4, 3398);
    			add_location(div1, file$k, 111, 8, 3715);
    			add_location(div2, file$k, 110, 4, 3700);
    			add_location(br5, file$k, 122, 17, 4269);
    			add_location(br6, file$k, 123, 51, 4326);
    			add_location(br7, file$k, 124, 53, 4385);
    			add_location(br8, file$k, 125, 65, 4456);
    			add_location(br9, file$k, 126, 73, 4535);
    			add_location(div3, file$k, 121, 4, 4245);
    			attr_dev(div4, "class", "statscontainer svelte-izilsr");
    			add_location(div4, file$k, 101, 0, 3364);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div4, anchor);
    			append_dev(div4, div0);
    			append_dev(div0, t0);
    			append_dev(div0, br0);
    			append_dev(div0, t1);
    			append_dev(div0, t2);
    			append_dev(div0, t3);
    			append_dev(div0, br1);
    			append_dev(div0, t4);
    			append_dev(div0, t5);
    			append_dev(div0, t6);
    			append_dev(div0, br2);
    			append_dev(div0, t7);
    			append_dev(div0, t8);
    			append_dev(div0, t9);
    			append_dev(div0, br3);
    			append_dev(div0, t10);
    			append_dev(div0, t11);
    			append_dev(div0, t12);
    			append_dev(div0, br4);
    			append_dev(div4, t13);
    			append_dev(div4, div2);
    			append_dev(div2, div1);
    			append_dev(div1, t14);
    			append_dev(div2, t15);
    			if (if_block) if_block.m(div2, null);
    			append_dev(div4, t16);
    			append_dev(div4, div3);
    			append_dev(div3, t17);
    			append_dev(div3, br5);
    			append_dev(div3, t18);
    			append_dev(div3, t19);
    			append_dev(div3, t20);
    			append_dev(div3, br6);
    			append_dev(div3, t21);
    			append_dev(div3, t22);
    			append_dev(div3, t23);
    			append_dev(div3, br7);
    			append_dev(div3, t24);
    			append_dev(div3, t25);
    			append_dev(div3, t26);
    			append_dev(div3, br8);
    			append_dev(div3, t27);
    			append_dev(div3, t28);
    			append_dev(div3, t29);
    			append_dev(div3, br9);
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*$fightplayerHuman*/ 4 && t2_value !== (t2_value = /*$fightplayerHuman*/ ctx[2].fighthealth + "")) set_data_dev(t2, t2_value);
    			if (dirty & /*$fightplayerHuman*/ 4 && t5_value !== (t5_value = /*$fightplayerHuman*/ ctx[2].fightstamina + "")) set_data_dev(t5, t5_value);

    			if (dirty & /*$fightplayerHuman*/ 4 && t8_value !== (t8_value = (/*$fightplayerHuman*/ ctx[2].fightisBlocking
    			? 'Blocking'
    			: '') + "")) set_data_dev(t8, t8_value);

    			if (dirty & /*$fightplayerHuman*/ 4 && t11_value !== (t11_value = /*$fightplayerHuman*/ ctx[2].fightcooldowns.attack + "")) set_data_dev(t11, t11_value);

    			if (dirty & /*gameOver, $fightcurrentTurn*/ 9 && t14_value !== (t14_value = (/*gameOver*/ ctx[0]
    			? "Game Over"
    			: /*$fightcurrentTurn*/ ctx[3] === 'human'
    				? "Your turn"
    				: "Computer's turn") + "")) set_data_dev(t14, t14_value);

    			if (/*$fightcurrentTurn*/ ctx[3] === 'human' && !/*gameOver*/ ctx[0]) {
    				if (if_block) {
    					if_block.p(ctx, dirty);
    				} else {
    					if_block = create_if_block$b(ctx);
    					if_block.c();
    					if_block.m(div2, null);
    				}
    			} else if (if_block) {
    				if_block.d(1);
    				if_block = null;
    			}

    			if (dirty & /*$fightplayerComputer*/ 2 && t19_value !== (t19_value = /*$fightplayerComputer*/ ctx[1].fighthealth + "")) set_data_dev(t19, t19_value);
    			if (dirty & /*$fightplayerComputer*/ 2 && t22_value !== (t22_value = /*$fightplayerComputer*/ ctx[1].fightstamina + "")) set_data_dev(t22, t22_value);

    			if (dirty & /*$fightplayerComputer*/ 2 && t25_value !== (t25_value = (/*$fightplayerComputer*/ ctx[1].fightisBlocking
    			? 'Blocking'
    			: '') + "")) set_data_dev(t25, t25_value);

    			if (dirty & /*$fightplayerComputer*/ 2 && t28_value !== (t28_value = /*$fightplayerComputer*/ ctx[1].fightcooldowns.attack + "")) set_data_dev(t28, t28_value);
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div4);
    			if (if_block) if_block.d();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block: block_1,
    		id: create_fragment$k.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block_1;
    }

    function instance$k($$self, $$props, $$invalidate) {
    	let $fightplayerComputer;
    	let $fightplayerHuman;
    	let $fightcurrentTurn;
    	validate_store(fightplayerComputer, 'fightplayerComputer');
    	component_subscribe($$self, fightplayerComputer, $$value => $$invalidate(1, $fightplayerComputer = $$value));
    	validate_store(fightplayerHuman, 'fightplayerHuman');
    	component_subscribe($$self, fightplayerHuman, $$value => $$invalidate(2, $fightplayerHuman = $$value));
    	validate_store(fightcurrentTurn, 'fightcurrentTurn');
    	component_subscribe($$self, fightcurrentTurn, $$value => $$invalidate(3, $fightcurrentTurn = $$value));
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('MovingDotSpaceGameFight', slots, []);
    	let gameOver = false;

    	function isPlayerTurn(player) {
    		return $fightcurrentTurn === 'human' && player === fightplayerHuman || $fightcurrentTurn === 'computer' && player === fightplayerComputer;
    	}

    	function switchTurn() {
    		if (!gameOver) {
    			fightcurrentTurn.update(turn => turn === 'human' ? 'computer' : 'human');

    			if ($fightcurrentTurn === 'computer') {
    				setTimeout(computerAction, 1000); // Simulate thinking delay for the computer's turn
    			}
    		}
    	}

    	function updateFightPlayer(player, changes) {
    		player.update(current => ({ ...current, ...changes }));
    		checkGameOver();
    	}

    	function performAttack(attacker, defender, attackType = 'normal') {
    		if (!isPlayerTurn(attacker) || gameOver) return;

    		attacker.update(a => {
    			if (a.fightstamina < 20 || a.fightcooldowns.attack > 0) {
    				return a; // Not enough stamina or attack is on cooldown
    			}

    			defender.update(d => {
    				if (!d.fightisBlocking) {
    					d.fighthealth -= attackType === 'normal' ? 10 : 25; // Special attack does more damage
    				}

    				return d;
    			});

    			return {
    				...a,
    				fightstamina: a.fightstamina - 20,
    				fightcooldowns: {
    					...a.fightcooldowns,
    					attack: attackType === 'normal' ? 1 : 3
    				}, // Cooldown in seconds
    				
    			};
    		});

    		// Start cooldown timer
    		setTimeout(
    			() => {
    				attacker.update(a => ({
    					...a,
    					fightcooldowns: { ...a.fightcooldowns, attack: 0 }
    				}));
    			},
    			attackType === 'normal' ? 1000 : 3000
    		); // Cooldown period

    		checkGameOver();
    		switchTurn();
    	}

    	function block(player) {
    		if (!isPlayerTurn(player) || gameOver) return;
    		updateFightPlayer(player, { fightisBlocking: true });

    		setTimeout(
    			() => {
    				updateFightPlayer(player, { fightisBlocking: false });
    			},
    			1000
    		); // Unblock after 1 second

    		checkGameOver();
    		switchTurn();
    	}

    	function computerAction() {
    		const action = Math.random() > 0.4 ? 'attack' : 'block';

    		if (action === 'attack') {
    			performAttack(fightplayerComputer, fightplayerHuman);
    		} else {
    			block(fightplayerComputer);
    		}
    	}

    	function checkGameOver() {
    		const human = $fightplayerHuman;
    		const computer = $fightplayerComputer;

    		if (human.fighthealth <= 0 || computer.fighthealth <= 0 || human.fightstamina <= 0 && computer.fightstamina <= 0) {
    			$$invalidate(0, gameOver = true);
    			determineWinner();
    		}
    	}

    	function determineWinner() {
    		const human = $fightplayerHuman;
    		const computer = $fightplayerComputer;

    		if (human.fighthealth > computer.fighthealth) {
    			alert('Game Over! You win!');
    		} else if (human.fighthealth < computer.fighthealth) {
    			alert('Game Over! Computer wins!');
    		} else {
    			alert('Game Over! It\'s a tie!');
    		}
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<MovingDotSpaceGameFight> was created with unknown prop '${key}'`);
    	});

    	const click_handler = () => performAttack(fightplayerHuman, fightplayerComputer);
    	const click_handler_1 = () => performAttack(fightplayerHuman, fightplayerComputer, 'special');
    	const click_handler_2 = () => block(fightplayerHuman);

    	$$self.$capture_state = () => ({
    		fightplayerHuman,
    		fightplayerComputer,
    		fightcurrentTurn,
    		gameOver,
    		isPlayerTurn,
    		switchTurn,
    		updateFightPlayer,
    		performAttack,
    		block,
    		computerAction,
    		checkGameOver,
    		determineWinner,
    		$fightplayerComputer,
    		$fightplayerHuman,
    		$fightcurrentTurn
    	});

    	$$self.$inject_state = $$props => {
    		if ('gameOver' in $$props) $$invalidate(0, gameOver = $$props.gameOver);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		gameOver,
    		$fightplayerComputer,
    		$fightplayerHuman,
    		$fightcurrentTurn,
    		performAttack,
    		block,
    		click_handler,
    		click_handler_1,
    		click_handler_2
    	];
    }

    class MovingDotSpaceGameFight extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$k, create_fragment$k, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "MovingDotSpaceGameFight",
    			options,
    			id: create_fragment$k.name
    		});
    	}
    }

    /* src\MovingDotSpaceGameFightMultiTheme.svelte generated by Svelte v3.59.2 */

    const { Object: Object_1$3 } = globals;

    const file$j = "src\\MovingDotSpaceGameFightMultiTheme.svelte";

    function get_each_context$f(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[20] = list[i];
    	return child_ctx;
    }

    // (202:4) {#each Object.keys(themes) as theme}
    function create_each_block$f(ctx) {
    	let option;
    	let t_value = /*theme*/ ctx[20] + "";
    	let t;

    	const block_1 = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = /*theme*/ ctx[20];
    			option.value = option.__value;
    			add_location(option, file$j, 202, 8, 6935);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block: block_1,
    		id: create_each_block$f.name,
    		type: "each",
    		source: "(202:4) {#each Object.keys(themes) as theme}",
    		ctx
    	});

    	return block_1;
    }

    // (207:0) {#if $selectedTheme}
    function create_if_block$a(ctx) {
    	let div4;
    	let div0;
    	let t0;
    	let br0;
    	let t1;
    	let t2_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].health + "";
    	let t2;
    	let t3;
    	let t4_value = /*$themedfightplayerHuman*/ ctx[2].fighthealth + "";
    	let t4;
    	let t5;
    	let br1;
    	let t6;
    	let t7_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].stamina + "";
    	let t7;
    	let t8;
    	let t9_value = /*$themedfightplayerHuman*/ ctx[2].fightstamina + "";
    	let t9;
    	let t10;
    	let br2;
    	let t11;

    	let t12_value = (/*$themedfightplayerHuman*/ ctx[2].fightisBlocking
    	? /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].blocking
    	: '') + "";

    	let t12;
    	let t13;
    	let br3;
    	let t14;
    	let t15_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].attack + "";
    	let t15;
    	let t16;
    	let t17_value = /*$themedfightplayerHuman*/ ctx[2].fightcooldowns.attack + "";
    	let t17;
    	let t18;
    	let br4;
    	let t19;
    	let div2;
    	let div1;

    	let t20_value = (/*gameOver*/ ctx[0]
    	? "Game Over"
    	: /*$themedfightcurrentTurn*/ ctx[3] === 'human'
    		? "Your turn"
    		: "Computer's turn") + "";

    	let t20;
    	let t21;
    	let t22;
    	let t23;
    	let div3;
    	let t24;
    	let br5;
    	let t25;
    	let t26_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].health + "";
    	let t26;
    	let t27;
    	let t28_value = /*$themedfightplayerComputer*/ ctx[1].fighthealth + "";
    	let t28;
    	let t29;
    	let br6;
    	let t30;
    	let t31_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].stamina + "";
    	let t31;
    	let t32;
    	let t33_value = /*$themedfightplayerComputer*/ ctx[1].fightstamina + "";
    	let t33;
    	let t34;
    	let br7;
    	let t35;

    	let t36_value = (/*$themedfightplayerComputer*/ ctx[1].fightisBlocking
    	? /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].blocking
    	: '') + "";

    	let t36;
    	let t37;
    	let br8;
    	let t38;
    	let t39_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].attack + "";
    	let t39;
    	let t40;
    	let t41_value = /*$themedfightplayerComputer*/ ctx[1].fightcooldowns.attack + "";
    	let t41;
    	let t42;
    	let br9;
    	let if_block0 = /*$themedfightcurrentTurn*/ ctx[3] === 'human' && !/*gameOver*/ ctx[0] && create_if_block_2$3(ctx);
    	let if_block1 = /*gameOver*/ ctx[0] && create_if_block_1$6(ctx);

    	const block_1 = {
    		c: function create() {
    			div4 = element$1("div");
    			div0 = element$1("div");
    			t0 = text("Player 1 ");
    			br0 = element$1("br");
    			t1 = space();
    			t2 = text(t2_value);
    			t3 = text(": ");
    			t4 = text(t4_value);
    			t5 = space();
    			br1 = element$1("br");
    			t6 = space();
    			t7 = text(t7_value);
    			t8 = text(": ");
    			t9 = text(t9_value);
    			t10 = space();
    			br2 = element$1("br");
    			t11 = space();
    			t12 = text(t12_value);
    			t13 = space();
    			br3 = element$1("br");
    			t14 = text("\r\n            Cooldown: ");
    			t15 = text(t15_value);
    			t16 = text(" - ");
    			t17 = text(t17_value);
    			t18 = text("s ");
    			br4 = element$1("br");
    			t19 = space();
    			div2 = element$1("div");
    			div1 = element$1("div");
    			t20 = text(t20_value);
    			t21 = space();
    			if (if_block0) if_block0.c();
    			t22 = space();
    			if (if_block1) if_block1.c();
    			t23 = space();
    			div3 = element$1("div");
    			t24 = text("Player 2 ");
    			br5 = element$1("br");
    			t25 = space();
    			t26 = text(t26_value);
    			t27 = text(": ");
    			t28 = text(t28_value);
    			t29 = space();
    			br6 = element$1("br");
    			t30 = space();
    			t31 = text(t31_value);
    			t32 = text(": ");
    			t33 = text(t33_value);
    			t34 = space();
    			br7 = element$1("br");
    			t35 = space();
    			t36 = text(t36_value);
    			t37 = space();
    			br8 = element$1("br");
    			t38 = text("\r\n            Cooldown: ");
    			t39 = text(t39_value);
    			t40 = text(" - ");
    			t41 = text(t41_value);
    			t42 = text("s ");
    			br9 = element$1("br");
    			add_location(br0, file$j, 209, 21, 7093);
    			add_location(br1, file$j, 210, 83, 7182);
    			add_location(br2, file$j, 211, 85, 7273);
    			add_location(br3, file$j, 212, 93, 7372);
    			add_location(br4, file$j, 213, 105, 7483);
    			add_location(div0, file$j, 208, 8, 7065);
    			add_location(div1, file$j, 217, 12, 7534);
    			add_location(div2, file$j, 216, 8, 7515);
    			add_location(br5, file$j, 231, 21, 8364);
    			add_location(br6, file$j, 232, 86, 8456);
    			add_location(br7, file$j, 233, 88, 8550);
    			add_location(br8, file$j, 234, 96, 8652);
    			add_location(br9, file$j, 235, 108, 8766);
    			add_location(div3, file$j, 230, 8, 8336);
    			attr_dev(div4, "class", "statscontainer svelte-izilsr");
    			add_location(div4, file$j, 207, 4, 7027);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div4, anchor);
    			append_dev(div4, div0);
    			append_dev(div0, t0);
    			append_dev(div0, br0);
    			append_dev(div0, t1);
    			append_dev(div0, t2);
    			append_dev(div0, t3);
    			append_dev(div0, t4);
    			append_dev(div0, t5);
    			append_dev(div0, br1);
    			append_dev(div0, t6);
    			append_dev(div0, t7);
    			append_dev(div0, t8);
    			append_dev(div0, t9);
    			append_dev(div0, t10);
    			append_dev(div0, br2);
    			append_dev(div0, t11);
    			append_dev(div0, t12);
    			append_dev(div0, t13);
    			append_dev(div0, br3);
    			append_dev(div0, t14);
    			append_dev(div0, t15);
    			append_dev(div0, t16);
    			append_dev(div0, t17);
    			append_dev(div0, t18);
    			append_dev(div0, br4);
    			append_dev(div4, t19);
    			append_dev(div4, div2);
    			append_dev(div2, div1);
    			append_dev(div1, t20);
    			append_dev(div2, t21);
    			if (if_block0) if_block0.m(div2, null);
    			append_dev(div2, t22);
    			if (if_block1) if_block1.m(div2, null);
    			append_dev(div4, t23);
    			append_dev(div4, div3);
    			append_dev(div3, t24);
    			append_dev(div3, br5);
    			append_dev(div3, t25);
    			append_dev(div3, t26);
    			append_dev(div3, t27);
    			append_dev(div3, t28);
    			append_dev(div3, t29);
    			append_dev(div3, br6);
    			append_dev(div3, t30);
    			append_dev(div3, t31);
    			append_dev(div3, t32);
    			append_dev(div3, t33);
    			append_dev(div3, t34);
    			append_dev(div3, br7);
    			append_dev(div3, t35);
    			append_dev(div3, t36);
    			append_dev(div3, t37);
    			append_dev(div3, br8);
    			append_dev(div3, t38);
    			append_dev(div3, t39);
    			append_dev(div3, t40);
    			append_dev(div3, t41);
    			append_dev(div3, t42);
    			append_dev(div3, br9);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*$selectedTheme*/ 16 && t2_value !== (t2_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].health + "")) set_data_dev(t2, t2_value);
    			if (dirty & /*$themedfightplayerHuman*/ 4 && t4_value !== (t4_value = /*$themedfightplayerHuman*/ ctx[2].fighthealth + "")) set_data_dev(t4, t4_value);
    			if (dirty & /*$selectedTheme*/ 16 && t7_value !== (t7_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].stamina + "")) set_data_dev(t7, t7_value);
    			if (dirty & /*$themedfightplayerHuman*/ 4 && t9_value !== (t9_value = /*$themedfightplayerHuman*/ ctx[2].fightstamina + "")) set_data_dev(t9, t9_value);

    			if (dirty & /*$themedfightplayerHuman, $selectedTheme*/ 20 && t12_value !== (t12_value = (/*$themedfightplayerHuman*/ ctx[2].fightisBlocking
    			? /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].blocking
    			: '') + "")) set_data_dev(t12, t12_value);

    			if (dirty & /*$selectedTheme*/ 16 && t15_value !== (t15_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].attack + "")) set_data_dev(t15, t15_value);
    			if (dirty & /*$themedfightplayerHuman*/ 4 && t17_value !== (t17_value = /*$themedfightplayerHuman*/ ctx[2].fightcooldowns.attack + "")) set_data_dev(t17, t17_value);

    			if (dirty & /*gameOver, $themedfightcurrentTurn*/ 9 && t20_value !== (t20_value = (/*gameOver*/ ctx[0]
    			? "Game Over"
    			: /*$themedfightcurrentTurn*/ ctx[3] === 'human'
    				? "Your turn"
    				: "Computer's turn") + "")) set_data_dev(t20, t20_value);

    			if (/*$themedfightcurrentTurn*/ ctx[3] === 'human' && !/*gameOver*/ ctx[0]) {
    				if (if_block0) {
    					if_block0.p(ctx, dirty);
    				} else {
    					if_block0 = create_if_block_2$3(ctx);
    					if_block0.c();
    					if_block0.m(div2, t22);
    				}
    			} else if (if_block0) {
    				if_block0.d(1);
    				if_block0 = null;
    			}

    			if (/*gameOver*/ ctx[0]) {
    				if (if_block1) {
    					if_block1.p(ctx, dirty);
    				} else {
    					if_block1 = create_if_block_1$6(ctx);
    					if_block1.c();
    					if_block1.m(div2, null);
    				}
    			} else if (if_block1) {
    				if_block1.d(1);
    				if_block1 = null;
    			}

    			if (dirty & /*$selectedTheme*/ 16 && t26_value !== (t26_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].health + "")) set_data_dev(t26, t26_value);
    			if (dirty & /*$themedfightplayerComputer*/ 2 && t28_value !== (t28_value = /*$themedfightplayerComputer*/ ctx[1].fighthealth + "")) set_data_dev(t28, t28_value);
    			if (dirty & /*$selectedTheme*/ 16 && t31_value !== (t31_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].stamina + "")) set_data_dev(t31, t31_value);
    			if (dirty & /*$themedfightplayerComputer*/ 2 && t33_value !== (t33_value = /*$themedfightplayerComputer*/ ctx[1].fightstamina + "")) set_data_dev(t33, t33_value);

    			if (dirty & /*$themedfightplayerComputer, $selectedTheme*/ 18 && t36_value !== (t36_value = (/*$themedfightplayerComputer*/ ctx[1].fightisBlocking
    			? /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].blocking
    			: '') + "")) set_data_dev(t36, t36_value);

    			if (dirty & /*$selectedTheme*/ 16 && t39_value !== (t39_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].attack + "")) set_data_dev(t39, t39_value);
    			if (dirty & /*$themedfightplayerComputer*/ 2 && t41_value !== (t41_value = /*$themedfightplayerComputer*/ ctx[1].fightcooldowns.attack + "")) set_data_dev(t41, t41_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div4);
    			if (if_block0) if_block0.d();
    			if (if_block1) if_block1.d();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block: block_1,
    		id: create_if_block$a.name,
    		type: "if",
    		source: "(207:0) {#if $selectedTheme}",
    		ctx
    	});

    	return block_1;
    }

    // (221:12) {#if $themedfightcurrentTurn === 'human' && !gameOver}
    function create_if_block_2$3(ctx) {
    	let button0;
    	let t0_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].attack + "";
    	let t0;
    	let t1;
    	let button1;
    	let t2_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].specialAttack + "";
    	let t2;
    	let t3;
    	let button2;
    	let t4_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].blocking + "";
    	let t4;
    	let mounted;
    	let dispose;

    	const block_1 = {
    		c: function create() {
    			button0 = element$1("button");
    			t0 = text(t0_value);
    			t1 = space();
    			button1 = element$1("button");
    			t2 = text(t2_value);
    			t3 = space();
    			button2 = element$1("button");
    			t4 = text(t4_value);
    			add_location(button0, file$j, 221, 16, 7761);
    			add_location(button1, file$j, 222, 16, 7909);
    			add_location(button2, file$j, 223, 16, 8075);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button0, anchor);
    			append_dev(button0, t0);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, button1, anchor);
    			append_dev(button1, t2);
    			insert_dev(target, t3, anchor);
    			insert_dev(target, button2, anchor);
    			append_dev(button2, t4);

    			if (!mounted) {
    				dispose = [
    					listen_dev(button0, "click", /*click_handler*/ ctx[11], false, false, false, false),
    					listen_dev(button1, "click", /*click_handler_1*/ ctx[12], false, false, false, false),
    					listen_dev(button2, "click", /*click_handler_2*/ ctx[13], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*$selectedTheme*/ 16 && t0_value !== (t0_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].attack + "")) set_data_dev(t0, t0_value);
    			if (dirty & /*$selectedTheme*/ 16 && t2_value !== (t2_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].specialAttack + "")) set_data_dev(t2, t2_value);
    			if (dirty & /*$selectedTheme*/ 16 && t4_value !== (t4_value = /*themes*/ ctx[5][/*$selectedTheme*/ ctx[4]].blocking + "")) set_data_dev(t4, t4_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button0);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(button1);
    			if (detaching) detach_dev(t3);
    			if (detaching) detach_dev(button2);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block: block_1,
    		id: create_if_block_2$3.name,
    		type: "if",
    		source: "(221:12) {#if $themedfightcurrentTurn === 'human' && !gameOver}",
    		ctx
    	});

    	return block_1;
    }

    // (226:12) {#if gameOver}
    function create_if_block_1$6(ctx) {
    	let button;
    	let mounted;
    	let dispose;

    	const block_1 = {
    		c: function create() {
    			button = element$1("button");
    			button.textContent = "Restart Game";
    			add_location(button, file$j, 226, 16, 8237);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button, anchor);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", /*restartGame*/ ctx[9], false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block: block_1,
    		id: create_if_block_1$6.name,
    		type: "if",
    		source: "(226:12) {#if gameOver}",
    		ctx
    	});

    	return block_1;
    }

    function create_fragment$j(ctx) {
    	let select;
    	let t;
    	let if_block_anchor;
    	let mounted;
    	let dispose;
    	let each_value = Object.keys(/*themes*/ ctx[5]);
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$f(get_each_context$f(ctx, each_value, i));
    	}

    	let if_block = /*$selectedTheme*/ ctx[4] && create_if_block$a(ctx);

    	const block_1 = {
    		c: function create() {
    			select = element$1("select");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t = space();
    			if (if_block) if_block.c();
    			if_block_anchor = empty();
    			if (/*$selectedTheme*/ ctx[4] === void 0) add_render_callback(() => /*select_change_handler*/ ctx[10].call(select));
    			add_location(select, file$j, 200, 0, 6847);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, select, anchor);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(select, null);
    				}
    			}

    			select_option(select, /*$selectedTheme*/ ctx[4], true);
    			insert_dev(target, t, anchor);
    			if (if_block) if_block.m(target, anchor);
    			insert_dev(target, if_block_anchor, anchor);

    			if (!mounted) {
    				dispose = listen_dev(select, "change", /*select_change_handler*/ ctx[10]);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*Object, themes*/ 32) {
    				each_value = Object.keys(/*themes*/ ctx[5]);
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$f(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$f(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(select, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}

    			if (dirty & /*$selectedTheme, Object, themes*/ 48) {
    				select_option(select, /*$selectedTheme*/ ctx[4]);
    			}

    			if (/*$selectedTheme*/ ctx[4]) {
    				if (if_block) {
    					if_block.p(ctx, dirty);
    				} else {
    					if_block = create_if_block$a(ctx);
    					if_block.c();
    					if_block.m(if_block_anchor.parentNode, if_block_anchor);
    				}
    			} else if (if_block) {
    				if_block.d(1);
    				if_block = null;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(select);
    			destroy_each(each_blocks, detaching);
    			if (detaching) detach_dev(t);
    			if (if_block) if_block.d(detaching);
    			if (detaching) detach_dev(if_block_anchor);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block: block_1,
    		id: create_fragment$j.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block_1;
    }

    function instance$j($$self, $$props, $$invalidate) {
    	let $themedfightplayerComputer;
    	let $themedfightplayerHuman;
    	let $themedfightcurrentTurn;
    	let $selectedTheme;
    	validate_store(themedfightplayerComputer, 'themedfightplayerComputer');
    	component_subscribe($$self, themedfightplayerComputer, $$value => $$invalidate(1, $themedfightplayerComputer = $$value));
    	validate_store(themedfightplayerHuman, 'themedfightplayerHuman');
    	component_subscribe($$self, themedfightplayerHuman, $$value => $$invalidate(2, $themedfightplayerHuman = $$value));
    	validate_store(themedfightcurrentTurn, 'themedfightcurrentTurn');
    	component_subscribe($$self, themedfightcurrentTurn, $$value => $$invalidate(3, $themedfightcurrentTurn = $$value));
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('MovingDotSpaceGameFightMultiTheme', slots, []);
    	let gameOver = false;

    	const themes = {
    		"Running": {
    			health: "Energy",
    			stamina: "Speed",
    			blocking: "Resting",
    			attack: "Sprint",
    			specialAttack: "Boost"
    		},
    		"Washing Clothes": {
    			health: "Cleanliness Level",
    			stamina: "Washing Machine Load",
    			blocking: "Pause Cycle",
    			attack: "Wash",
    			specialAttack: "Deep Clean"
    		},
    		"Waiting in a Queue": {
    			health: "Patience",
    			stamina: "Position in Queue",
    			blocking: "Take a Break",
    			attack: "Move Forward",
    			specialAttack: "Skip Ahead"
    		},
    		"Giving a Speech": {
    			health: "Confidence",
    			stamina: "Speech Length",
    			blocking: "Pause",
    			attack: "Deliver Point",
    			specialAttack: "Engaging Story"
    		},
    		"Studying for an Exam": {
    			health: "Knowledge",
    			stamina: "Focus",
    			blocking: "Take a Break",
    			attack: "Study Topic",
    			specialAttack: "Intensive Study Session"
    		},
    		"Cooking Competition": {
    			health: "Dish Quality",
    			stamina: "Ingredients",
    			blocking: "Take a Break",
    			attack: "Cook",
    			specialAttack: "Special Recipe"
    		},
    		"Gardening": {
    			health: "Plant Health",
    			stamina: "Water Supply",
    			blocking: "Pause Work",
    			attack: "Water Plants",
    			specialAttack: "Fertilize"
    		},
    		"Painting a Room": {
    			health: "Wall Coverage",
    			stamina: "Paint Supply",
    			blocking: "Take a Break",
    			attack: "Paint Wall",
    			specialAttack: "Detailed Brushwork"
    		},
    		"Cleaning a House": {
    			health: "Cleanliness",
    			stamina: "Cleaning Supplies",
    			blocking: "Take a Break",
    			attack: "Clean Room",
    			specialAttack: "Deep Clean Room"
    		},
    		"Repairing a Car": {
    			health: "Car Condition",
    			stamina: "Tools and Parts",
    			blocking: "Pause Repair",
    			attack: "Fix Part",
    			specialAttack: "Major Overhaul"
    		},
    		"Camping Trip": {
    			health: "Camp Comfort",
    			stamina: "Supplies",
    			blocking: "Rest",
    			attack: "Set Up Tent",
    			specialAttack: "Build Campfire"
    		},
    		"Building a Model": {
    			health: "Model Quality",
    			stamina: "Building Materials",
    			blocking: "Pause Work",
    			attack: "Add Piece",
    			specialAttack: "Detailed Work"
    		}
    	};

    	let selectedTheme = writable(Object.keys(themes)[0]);
    	validate_store(selectedTheme, 'selectedTheme');
    	component_subscribe($$self, selectedTheme, value => $$invalidate(4, $selectedTheme = value));

    	function isPlayerTurn(player) {
    		return $themedfightcurrentTurn === 'human' && player === themedfightplayerHuman || $themedfightcurrentTurn === 'computer' && player === themedfightplayerComputer;
    	}

    	function switchTurn() {
    		if (!gameOver) {
    			themedfightcurrentTurn.update(turn => turn === 'human' ? 'computer' : 'human');

    			if ($themedfightcurrentTurn === 'computer') {
    				setTimeout(computerAction, 1000); // Simulate thinking delay for the computer's turn
    			}
    		}
    	}

    	function updateThemedFightPlayer(player, changes) {
    		player.update(current => ({ ...current, ...changes }));
    		checkGameOver();
    	}

    	function performAttack(attacker, defender, attackType = 'normal') {
    		if (!isPlayerTurn(attacker) || gameOver) return;

    		attacker.update(a => {
    			if (a.fightstamina < 20 || a.fightcooldowns.attack > 0) {
    				return a; // Not enough stamina or attack is on cooldown
    			}

    			defender.update(d => {
    				if (!d.fightisBlocking) {
    					d.fighthealth -= attackType === 'normal' ? 10 : 25; // Special attack does more damage
    				}

    				return d;
    			});

    			return {
    				...a,
    				fightstamina: a.fightstamina - 20,
    				fightcooldowns: {
    					...a.fightcooldowns,
    					attack: attackType === 'normal' ? 1 : 3
    				}, // Cooldown in seconds
    				
    			};
    		});

    		// Start cooldown timer
    		setTimeout(
    			() => {
    				attacker.update(a => ({
    					...a,
    					fightcooldowns: { ...a.fightcooldowns, attack: 0 }
    				}));
    			},
    			attackType === 'normal' ? 1000 : 3000
    		); // Cooldown period

    		checkGameOver();
    		switchTurn();
    	}

    	function block(player) {
    		if (!isPlayerTurn(player) || gameOver) return;
    		updateThemedFightPlayer(player, { fightisBlocking: true });

    		setTimeout(
    			() => {
    				updateThemedFightPlayer(player, { fightisBlocking: false });
    			},
    			1000
    		); // Unblock after 1 second

    		checkGameOver();
    		switchTurn();
    	}

    	function computerAction() {
    		const action = Math.random() > 0.4 ? 'attack' : 'block';

    		if (action === 'attack') {
    			performAttack(themedfightplayerComputer, themedfightplayerHuman);
    		} else {
    			block(themedfightplayerComputer);
    		}
    	}

    	function checkGameOver() {
    		const human = $themedfightplayerHuman;
    		const computer = $themedfightplayerComputer;

    		if (human.fighthealth <= 0 || computer.fighthealth <= 0 || human.fightstamina <= 0 && computer.fightstamina <= 0) {
    			$$invalidate(0, gameOver = true);
    			determineWinner();
    		}
    	}

    	function determineWinner() {
    		const human = $themedfightplayerHuman;
    		const computer = $themedfightplayerComputer;

    		if (human.fighthealth > computer.fighthealth) {
    			alert('Game Over! You win!');
    		} else if (human.fighthealth < computer.fighthealth) {
    			alert('Game Over! Computer wins!');
    		} else {
    			alert('Game Over! It\'s a tie!');
    		}
    	}

    	function restartGame() {
    		$$invalidate(0, gameOver = false);

    		themedfightplayerHuman.set({
    			fighthealth: 100,
    			fightstamina: 100,
    			fightisBlocking: false,
    			fightcooldowns: { attack: 0 }
    		});

    		themedfightplayerComputer.set({
    			fighthealth: 100,
    			fightstamina: 100,
    			fightisBlocking: false,
    			fightcooldowns: { attack: 0 }
    		});

    		themedfightcurrentTurn.set('human');
    	}

    	const writable_props = [];

    	Object_1$3.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<MovingDotSpaceGameFightMultiTheme> was created with unknown prop '${key}'`);
    	});

    	function select_change_handler() {
    		$selectedTheme = select_value(this);
    		selectedTheme.set($selectedTheme);
    		$$invalidate(5, themes);
    	}

    	const click_handler = () => performAttack(themedfightplayerHuman, themedfightplayerComputer);
    	const click_handler_1 = () => performAttack(themedfightplayerHuman, themedfightplayerComputer, 'special');
    	const click_handler_2 = () => block(themedfightplayerHuman);

    	$$self.$capture_state = () => ({
    		writable,
    		themedfightplayerHuman,
    		themedfightplayerComputer,
    		themedfightcurrentTurn,
    		gameOver,
    		themes,
    		selectedTheme,
    		isPlayerTurn,
    		switchTurn,
    		updateThemedFightPlayer,
    		performAttack,
    		block,
    		computerAction,
    		checkGameOver,
    		determineWinner,
    		restartGame,
    		$themedfightplayerComputer,
    		$themedfightplayerHuman,
    		$themedfightcurrentTurn,
    		$selectedTheme
    	});

    	$$self.$inject_state = $$props => {
    		if ('gameOver' in $$props) $$invalidate(0, gameOver = $$props.gameOver);
    		if ('selectedTheme' in $$props) $$invalidate(6, selectedTheme = $$props.selectedTheme);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		gameOver,
    		$themedfightplayerComputer,
    		$themedfightplayerHuman,
    		$themedfightcurrentTurn,
    		$selectedTheme,
    		themes,
    		selectedTheme,
    		performAttack,
    		block,
    		restartGame,
    		select_change_handler,
    		click_handler,
    		click_handler_1,
    		click_handler_2
    	];
    }

    class MovingDotSpaceGameFightMultiTheme extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$j, create_fragment$j, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "MovingDotSpaceGameFightMultiTheme",
    			options,
    			id: create_fragment$j.name
    		});
    	}
    }

    /**
     * @license
     * Copyright 2010-2022 Three.js Authors
     * SPDX-License-Identifier: MIT
     */
    const REVISION = '145';
    const MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2, ROTATE: 0, DOLLY: 1, PAN: 2 };
    const TOUCH = { ROTATE: 0, PAN: 1, DOLLY_PAN: 2, DOLLY_ROTATE: 3 };
    const CullFaceNone = 0;
    const CullFaceBack = 1;
    const CullFaceFront = 2;
    const CullFaceFrontBack = 3;
    const BasicShadowMap = 0;
    const PCFShadowMap = 1;
    const PCFSoftShadowMap = 2;
    const VSMShadowMap = 3;
    const FrontSide = 0;
    const BackSide = 1;
    const DoubleSide = 2;
    const NoBlending = 0;
    const NormalBlending = 1;
    const AdditiveBlending = 2;
    const SubtractiveBlending = 3;
    const MultiplyBlending = 4;
    const CustomBlending = 5;
    const AddEquation = 100;
    const SubtractEquation = 101;
    const ReverseSubtractEquation = 102;
    const MinEquation = 103;
    const MaxEquation = 104;
    const ZeroFactor = 200;
    const OneFactor = 201;
    const SrcColorFactor = 202;
    const OneMinusSrcColorFactor = 203;
    const SrcAlphaFactor = 204;
    const OneMinusSrcAlphaFactor = 205;
    const DstAlphaFactor = 206;
    const OneMinusDstAlphaFactor = 207;
    const DstColorFactor = 208;
    const OneMinusDstColorFactor = 209;
    const SrcAlphaSaturateFactor = 210;
    const NeverDepth = 0;
    const AlwaysDepth = 1;
    const LessDepth = 2;
    const LessEqualDepth = 3;
    const EqualDepth = 4;
    const GreaterEqualDepth = 5;
    const GreaterDepth = 6;
    const NotEqualDepth = 7;
    const MultiplyOperation = 0;
    const MixOperation = 1;
    const AddOperation = 2;
    const NoToneMapping = 0;
    const LinearToneMapping = 1;
    const ReinhardToneMapping = 2;
    const CineonToneMapping = 3;
    const ACESFilmicToneMapping = 4;
    const CustomToneMapping = 5;

    const UVMapping = 300;
    const CubeReflectionMapping = 301;
    const CubeRefractionMapping = 302;
    const EquirectangularReflectionMapping = 303;
    const EquirectangularRefractionMapping = 304;
    const CubeUVReflectionMapping = 306;
    const RepeatWrapping = 1000;
    const ClampToEdgeWrapping = 1001;
    const MirroredRepeatWrapping = 1002;
    const NearestFilter = 1003;
    const NearestMipmapNearestFilter = 1004;
    const NearestMipMapNearestFilter = 1004;
    const NearestMipmapLinearFilter = 1005;
    const NearestMipMapLinearFilter = 1005;
    const LinearFilter = 1006;
    const LinearMipmapNearestFilter = 1007;
    const LinearMipMapNearestFilter = 1007;
    const LinearMipmapLinearFilter = 1008;
    const LinearMipMapLinearFilter = 1008;
    const UnsignedByteType = 1009;
    const ByteType = 1010;
    const ShortType = 1011;
    const UnsignedShortType = 1012;
    const IntType = 1013;
    const UnsignedIntType = 1014;
    const FloatType = 1015;
    const HalfFloatType = 1016;
    const UnsignedShort4444Type = 1017;
    const UnsignedShort5551Type = 1018;
    const UnsignedInt248Type = 1020;
    const AlphaFormat = 1021;
    const RGBFormat = 1022; // @deprecated since r137
    const RGBAFormat = 1023;
    const LuminanceFormat = 1024;
    const LuminanceAlphaFormat = 1025;
    const DepthFormat = 1026;
    const DepthStencilFormat = 1027;
    const RedFormat = 1028;
    const RedIntegerFormat = 1029;
    const RGFormat = 1030;
    const RGIntegerFormat = 1031;
    const RGBAIntegerFormat = 1033;

    const RGB_S3TC_DXT1_Format = 33776;
    const RGBA_S3TC_DXT1_Format = 33777;
    const RGBA_S3TC_DXT3_Format = 33778;
    const RGBA_S3TC_DXT5_Format = 33779;
    const RGB_PVRTC_4BPPV1_Format = 35840;
    const RGB_PVRTC_2BPPV1_Format = 35841;
    const RGBA_PVRTC_4BPPV1_Format = 35842;
    const RGBA_PVRTC_2BPPV1_Format = 35843;
    const RGB_ETC1_Format = 36196;
    const RGB_ETC2_Format = 37492;
    const RGBA_ETC2_EAC_Format = 37496;
    const RGBA_ASTC_4x4_Format = 37808;
    const RGBA_ASTC_5x4_Format = 37809;
    const RGBA_ASTC_5x5_Format = 37810;
    const RGBA_ASTC_6x5_Format = 37811;
    const RGBA_ASTC_6x6_Format = 37812;
    const RGBA_ASTC_8x5_Format = 37813;
    const RGBA_ASTC_8x6_Format = 37814;
    const RGBA_ASTC_8x8_Format = 37815;
    const RGBA_ASTC_10x5_Format = 37816;
    const RGBA_ASTC_10x6_Format = 37817;
    const RGBA_ASTC_10x8_Format = 37818;
    const RGBA_ASTC_10x10_Format = 37819;
    const RGBA_ASTC_12x10_Format = 37820;
    const RGBA_ASTC_12x12_Format = 37821;
    const RGBA_BPTC_Format = 36492;
    const LoopOnce = 2200;
    const LoopRepeat = 2201;
    const LoopPingPong = 2202;
    const InterpolateDiscrete = 2300;
    const InterpolateLinear = 2301;
    const InterpolateSmooth = 2302;
    const ZeroCurvatureEnding = 2400;
    const ZeroSlopeEnding = 2401;
    const WrapAroundEnding = 2402;
    const NormalAnimationBlendMode = 2500;
    const AdditiveAnimationBlendMode = 2501;
    const TrianglesDrawMode = 0;
    const TriangleStripDrawMode = 1;
    const TriangleFanDrawMode = 2;
    const LinearEncoding = 3000;
    const sRGBEncoding = 3001;
    const BasicDepthPacking = 3200;
    const RGBADepthPacking = 3201;
    const TangentSpaceNormalMap = 0;
    const ObjectSpaceNormalMap = 1;

    // Color space string identifiers, matching CSS Color Module Level 4 and WebGPU names where available.
    const NoColorSpace = '';
    const SRGBColorSpace = 'srgb';
    const LinearSRGBColorSpace = 'srgb-linear';

    const ZeroStencilOp = 0;
    const KeepStencilOp = 7680;
    const ReplaceStencilOp = 7681;
    const IncrementStencilOp = 7682;
    const DecrementStencilOp = 7683;
    const IncrementWrapStencilOp = 34055;
    const DecrementWrapStencilOp = 34056;
    const InvertStencilOp = 5386;

    const NeverStencilFunc = 512;
    const LessStencilFunc = 513;
    const EqualStencilFunc = 514;
    const LessEqualStencilFunc = 515;
    const GreaterStencilFunc = 516;
    const NotEqualStencilFunc = 517;
    const GreaterEqualStencilFunc = 518;
    const AlwaysStencilFunc = 519;

    const StaticDrawUsage = 35044;
    const DynamicDrawUsage = 35048;
    const StreamDrawUsage = 35040;
    const StaticReadUsage = 35045;
    const DynamicReadUsage = 35049;
    const StreamReadUsage = 35041;
    const StaticCopyUsage = 35046;
    const DynamicCopyUsage = 35050;
    const StreamCopyUsage = 35042;

    const GLSL1 = '100';
    const GLSL3 = '300 es';

    const _SRGBAFormat = 1035; // fallback for WebGL 1

    /**
     * https://github.com/mrdoob/eventdispatcher.js/
     */

    class EventDispatcher {

    	addEventListener( type, listener ) {

    		if ( this._listeners === undefined ) this._listeners = {};

    		const listeners = this._listeners;

    		if ( listeners[ type ] === undefined ) {

    			listeners[ type ] = [];

    		}

    		if ( listeners[ type ].indexOf( listener ) === - 1 ) {

    			listeners[ type ].push( listener );

    		}

    	}

    	hasEventListener( type, listener ) {

    		if ( this._listeners === undefined ) return false;

    		const listeners = this._listeners;

    		return listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1;

    	}

    	removeEventListener( type, listener ) {

    		if ( this._listeners === undefined ) return;

    		const listeners = this._listeners;
    		const listenerArray = listeners[ type ];

    		if ( listenerArray !== undefined ) {

    			const index = listenerArray.indexOf( listener );

    			if ( index !== - 1 ) {

    				listenerArray.splice( index, 1 );

    			}

    		}

    	}

    	dispatchEvent( event ) {

    		if ( this._listeners === undefined ) return;

    		const listeners = this._listeners;
    		const listenerArray = listeners[ event.type ];

    		if ( listenerArray !== undefined ) {

    			event.target = this;

    			// Make a copy, in case listeners are removed while iterating.
    			const array = listenerArray.slice( 0 );

    			for ( let i = 0, l = array.length; i < l; i ++ ) {

    				array[ i ].call( this, event );

    			}

    			event.target = null;

    		}

    	}

    }

    const _lut = [ '00', '01', '02', '03', '04', '05', '06', '07', '08', '09', '0a', '0b', '0c', '0d', '0e', '0f', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '1a', '1b', '1c', '1d', '1e', '1f', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '2a', '2b', '2c', '2d', '2e', '2f', '30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '3a', '3b', '3c', '3d', '3e', '3f', '40', '41', '42', '43', '44', '45', '46', '47', '48', '49', '4a', '4b', '4c', '4d', '4e', '4f', '50', '51', '52', '53', '54', '55', '56', '57', '58', '59', '5a', '5b', '5c', '5d', '5e', '5f', '60', '61', '62', '63', '64', '65', '66', '67', '68', '69', '6a', '6b', '6c', '6d', '6e', '6f', '70', '71', '72', '73', '74', '75', '76', '77', '78', '79', '7a', '7b', '7c', '7d', '7e', '7f', '80', '81', '82', '83', '84', '85', '86', '87', '88', '89', '8a', '8b', '8c', '8d', '8e', '8f', '90', '91', '92', '93', '94', '95', '96', '97', '98', '99', '9a', '9b', '9c', '9d', '9e', '9f', 'a0', 'a1', 'a2', 'a3', 'a4', 'a5', 'a6', 'a7', 'a8', 'a9', 'aa', 'ab', 'ac', 'ad', 'ae', 'af', 'b0', 'b1', 'b2', 'b3', 'b4', 'b5', 'b6', 'b7', 'b8', 'b9', 'ba', 'bb', 'bc', 'bd', 'be', 'bf', 'c0', 'c1', 'c2', 'c3', 'c4', 'c5', 'c6', 'c7', 'c8', 'c9', 'ca', 'cb', 'cc', 'cd', 'ce', 'cf', 'd0', 'd1', 'd2', 'd3', 'd4', 'd5', 'd6', 'd7', 'd8', 'd9', 'da', 'db', 'dc', 'dd', 'de', 'df', 'e0', 'e1', 'e2', 'e3', 'e4', 'e5', 'e6', 'e7', 'e8', 'e9', 'ea', 'eb', 'ec', 'ed', 'ee', 'ef', 'f0', 'f1', 'f2', 'f3', 'f4', 'f5', 'f6', 'f7', 'f8', 'f9', 'fa', 'fb', 'fc', 'fd', 'fe', 'ff' ];

    let _seed = 1234567;


    const DEG2RAD = Math.PI / 180;
    const RAD2DEG = 180 / Math.PI;

    // http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136
    function generateUUID() {

    	const d0 = Math.random() * 0xffffffff | 0;
    	const d1 = Math.random() * 0xffffffff | 0;
    	const d2 = Math.random() * 0xffffffff | 0;
    	const d3 = Math.random() * 0xffffffff | 0;
    	const uuid = _lut[ d0 & 0xff ] + _lut[ d0 >> 8 & 0xff ] + _lut[ d0 >> 16 & 0xff ] + _lut[ d0 >> 24 & 0xff ] + '-' +
    			_lut[ d1 & 0xff ] + _lut[ d1 >> 8 & 0xff ] + '-' + _lut[ d1 >> 16 & 0x0f | 0x40 ] + _lut[ d1 >> 24 & 0xff ] + '-' +
    			_lut[ d2 & 0x3f | 0x80 ] + _lut[ d2 >> 8 & 0xff ] + '-' + _lut[ d2 >> 16 & 0xff ] + _lut[ d2 >> 24 & 0xff ] +
    			_lut[ d3 & 0xff ] + _lut[ d3 >> 8 & 0xff ] + _lut[ d3 >> 16 & 0xff ] + _lut[ d3 >> 24 & 0xff ];

    	// .toLowerCase() here flattens concatenated strings to save heap memory space.
    	return uuid.toLowerCase();

    }

    function clamp( value, min, max ) {

    	return Math.max( min, Math.min( max, value ) );

    }

    // compute euclidean modulo of m % n
    // https://en.wikipedia.org/wiki/Modulo_operation
    function euclideanModulo( n, m ) {

    	return ( ( n % m ) + m ) % m;

    }

    // Linear mapping from range <a1, a2> to range <b1, b2>
    function mapLinear( x, a1, a2, b1, b2 ) {

    	return b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );

    }

    // https://www.gamedev.net/tutorials/programming/general-and-gameplay-programming/inverse-lerp-a-super-useful-yet-often-overlooked-function-r5230/
    function inverseLerp( x, y, value ) {

    	if ( x !== y ) {

    		return ( value - x ) / ( y - x );

    	} else {

    		return 0;

    	}

    }

    // https://en.wikipedia.org/wiki/Linear_interpolation
    function lerp( x, y, t ) {

    	return ( 1 - t ) * x + t * y;

    }

    // http://www.rorydriscoll.com/2016/03/07/frame-rate-independent-damping-using-lerp/
    function damp( x, y, lambda, dt ) {

    	return lerp( x, y, 1 - Math.exp( - lambda * dt ) );

    }

    // https://www.desmos.com/calculator/vcsjnyz7x4
    function pingpong( x, length = 1 ) {

    	return length - Math.abs( euclideanModulo( x, length * 2 ) - length );

    }

    // http://en.wikipedia.org/wiki/Smoothstep
    function smoothstep( x, min, max ) {

    	if ( x <= min ) return 0;
    	if ( x >= max ) return 1;

    	x = ( x - min ) / ( max - min );

    	return x * x * ( 3 - 2 * x );

    }

    function smootherstep( x, min, max ) {

    	if ( x <= min ) return 0;
    	if ( x >= max ) return 1;

    	x = ( x - min ) / ( max - min );

    	return x * x * x * ( x * ( x * 6 - 15 ) + 10 );

    }

    // Random integer from <low, high> interval
    function randInt( low, high ) {

    	return low + Math.floor( Math.random() * ( high - low + 1 ) );

    }

    // Random float from <low, high> interval
    function randFloat( low, high ) {

    	return low + Math.random() * ( high - low );

    }

    // Random float from <-range/2, range/2> interval
    function randFloatSpread( range ) {

    	return range * ( 0.5 - Math.random() );

    }

    // Deterministic pseudo-random float in the interval [ 0, 1 ]
    function seededRandom( s ) {

    	if ( s !== undefined ) _seed = s;

    	// Mulberry32 generator

    	let t = _seed += 0x6D2B79F5;

    	t = Math.imul( t ^ t >>> 15, t | 1 );

    	t ^= t + Math.imul( t ^ t >>> 7, t | 61 );

    	return ( ( t ^ t >>> 14 ) >>> 0 ) / 4294967296;

    }

    function degToRad( degrees ) {

    	return degrees * DEG2RAD;

    }

    function radToDeg( radians ) {

    	return radians * RAD2DEG;

    }

    function isPowerOfTwo( value ) {

    	return ( value & ( value - 1 ) ) === 0 && value !== 0;

    }

    function ceilPowerOfTwo( value ) {

    	return Math.pow( 2, Math.ceil( Math.log( value ) / Math.LN2 ) );

    }

    function floorPowerOfTwo( value ) {

    	return Math.pow( 2, Math.floor( Math.log( value ) / Math.LN2 ) );

    }

    function setQuaternionFromProperEuler( q, a, b, c, order ) {

    	// Intrinsic Proper Euler Angles - see https://en.wikipedia.org/wiki/Euler_angles

    	// rotations are applied to the axes in the order specified by 'order'
    	// rotation by angle 'a' is applied first, then by angle 'b', then by angle 'c'
    	// angles are in radians

    	const cos = Math.cos;
    	const sin = Math.sin;

    	const c2 = cos( b / 2 );
    	const s2 = sin( b / 2 );

    	const c13 = cos( ( a + c ) / 2 );
    	const s13 = sin( ( a + c ) / 2 );

    	const c1_3 = cos( ( a - c ) / 2 );
    	const s1_3 = sin( ( a - c ) / 2 );

    	const c3_1 = cos( ( c - a ) / 2 );
    	const s3_1 = sin( ( c - a ) / 2 );

    	switch ( order ) {

    		case 'XYX':
    			q.set( c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13 );
    			break;

    		case 'YZY':
    			q.set( s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13 );
    			break;

    		case 'ZXZ':
    			q.set( s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13 );
    			break;

    		case 'XZX':
    			q.set( c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13 );
    			break;

    		case 'YXY':
    			q.set( s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13 );
    			break;

    		case 'ZYZ':
    			q.set( s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13 );
    			break;

    		default:
    			console.warn( 'THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order );

    	}

    }

    function denormalize( value, array ) {

    	switch ( array.constructor ) {

    		case Float32Array:

    			return value;

    		case Uint16Array:

    			return value / 65535.0;

    		case Uint8Array:

    			return value / 255.0;

    		case Int16Array:

    			return Math.max( value / 32767.0, - 1.0 );

    		case Int8Array:

    			return Math.max( value / 127.0, - 1.0 );

    		default:

    			throw new Error( 'Invalid component type.' );

    	}

    }

    function normalize( value, array ) {

    	switch ( array.constructor ) {

    		case Float32Array:

    			return value;

    		case Uint16Array:

    			return Math.round( value * 65535.0 );

    		case Uint8Array:

    			return Math.round( value * 255.0 );

    		case Int16Array:

    			return Math.round( value * 32767.0 );

    		case Int8Array:

    			return Math.round( value * 127.0 );

    		default:

    			throw new Error( 'Invalid component type.' );

    	}

    }

    var MathUtils = /*#__PURE__*/Object.freeze({
    	__proto__: null,
    	DEG2RAD: DEG2RAD,
    	RAD2DEG: RAD2DEG,
    	generateUUID: generateUUID,
    	clamp: clamp,
    	euclideanModulo: euclideanModulo,
    	mapLinear: mapLinear,
    	inverseLerp: inverseLerp,
    	lerp: lerp,
    	damp: damp,
    	pingpong: pingpong,
    	smoothstep: smoothstep,
    	smootherstep: smootherstep,
    	randInt: randInt,
    	randFloat: randFloat,
    	randFloatSpread: randFloatSpread,
    	seededRandom: seededRandom,
    	degToRad: degToRad,
    	radToDeg: radToDeg,
    	isPowerOfTwo: isPowerOfTwo,
    	ceilPowerOfTwo: ceilPowerOfTwo,
    	floorPowerOfTwo: floorPowerOfTwo,
    	setQuaternionFromProperEuler: setQuaternionFromProperEuler,
    	normalize: normalize,
    	denormalize: denormalize
    });

    class Vector2 {

    	constructor( x = 0, y = 0 ) {

    		Vector2.prototype.isVector2 = true;

    		this.x = x;
    		this.y = y;

    	}

    	get width() {

    		return this.x;

    	}

    	set width( value ) {

    		this.x = value;

    	}

    	get height() {

    		return this.y;

    	}

    	set height( value ) {

    		this.y = value;

    	}

    	set( x, y ) {

    		this.x = x;
    		this.y = y;

    		return this;

    	}

    	setScalar( scalar ) {

    		this.x = scalar;
    		this.y = scalar;

    		return this;

    	}

    	setX( x ) {

    		this.x = x;

    		return this;

    	}

    	setY( y ) {

    		this.y = y;

    		return this;

    	}

    	setComponent( index, value ) {

    		switch ( index ) {

    			case 0: this.x = value; break;
    			case 1: this.y = value; break;
    			default: throw new Error( 'index is out of range: ' + index );

    		}

    		return this;

    	}

    	getComponent( index ) {

    		switch ( index ) {

    			case 0: return this.x;
    			case 1: return this.y;
    			default: throw new Error( 'index is out of range: ' + index );

    		}

    	}

    	clone() {

    		return new this.constructor( this.x, this.y );

    	}

    	copy( v ) {

    		this.x = v.x;
    		this.y = v.y;

    		return this;

    	}

    	add( v ) {

    		this.x += v.x;
    		this.y += v.y;

    		return this;

    	}

    	addScalar( s ) {

    		this.x += s;
    		this.y += s;

    		return this;

    	}

    	addVectors( a, b ) {

    		this.x = a.x + b.x;
    		this.y = a.y + b.y;

    		return this;

    	}

    	addScaledVector( v, s ) {

    		this.x += v.x * s;
    		this.y += v.y * s;

    		return this;

    	}

    	sub( v ) {

    		this.x -= v.x;
    		this.y -= v.y;

    		return this;

    	}

    	subScalar( s ) {

    		this.x -= s;
    		this.y -= s;

    		return this;

    	}

    	subVectors( a, b ) {

    		this.x = a.x - b.x;
    		this.y = a.y - b.y;

    		return this;

    	}

    	multiply( v ) {

    		this.x *= v.x;
    		this.y *= v.y;

    		return this;

    	}

    	multiplyScalar( scalar ) {

    		this.x *= scalar;
    		this.y *= scalar;

    		return this;

    	}

    	divide( v ) {

    		this.x /= v.x;
    		this.y /= v.y;

    		return this;

    	}

    	divideScalar( scalar ) {

    		return this.multiplyScalar( 1 / scalar );

    	}

    	applyMatrix3( m ) {

    		const x = this.x, y = this.y;
    		const e = m.elements;

    		this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ];
    		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ];

    		return this;

    	}

    	min( v ) {

    		this.x = Math.min( this.x, v.x );
    		this.y = Math.min( this.y, v.y );

    		return this;

    	}

    	max( v ) {

    		this.x = Math.max( this.x, v.x );
    		this.y = Math.max( this.y, v.y );

    		return this;

    	}

    	clamp( min, max ) {

    		// assumes min < max, componentwise

    		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
    		this.y = Math.max( min.y, Math.min( max.y, this.y ) );

    		return this;

    	}

    	clampScalar( minVal, maxVal ) {

    		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
    		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );

    		return this;

    	}

    	clampLength( min, max ) {

    		const length = this.length();

    		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );

    	}

    	floor() {

    		this.x = Math.floor( this.x );
    		this.y = Math.floor( this.y );

    		return this;

    	}

    	ceil() {

    		this.x = Math.ceil( this.x );
    		this.y = Math.ceil( this.y );

    		return this;

    	}

    	round() {

    		this.x = Math.round( this.x );
    		this.y = Math.round( this.y );

    		return this;

    	}

    	roundToZero() {

    		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
    		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );

    		return this;

    	}

    	negate() {

    		this.x = - this.x;
    		this.y = - this.y;

    		return this;

    	}

    	dot( v ) {

    		return this.x * v.x + this.y * v.y;

    	}

    	cross( v ) {

    		return this.x * v.y - this.y * v.x;

    	}

    	lengthSq() {

    		return this.x * this.x + this.y * this.y;

    	}

    	length() {

    		return Math.sqrt( this.x * this.x + this.y * this.y );

    	}

    	manhattanLength() {

    		return Math.abs( this.x ) + Math.abs( this.y );

    	}

    	normalize() {

    		return this.divideScalar( this.length() || 1 );

    	}

    	angle() {

    		// computes the angle in radians with respect to the positive x-axis

    		const angle = Math.atan2( - this.y, - this.x ) + Math.PI;

    		return angle;

    	}

    	distanceTo( v ) {

    		return Math.sqrt( this.distanceToSquared( v ) );

    	}

    	distanceToSquared( v ) {

    		const dx = this.x - v.x, dy = this.y - v.y;
    		return dx * dx + dy * dy;

    	}

    	manhattanDistanceTo( v ) {

    		return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y );

    	}

    	setLength( length ) {

    		return this.normalize().multiplyScalar( length );

    	}

    	lerp( v, alpha ) {

    		this.x += ( v.x - this.x ) * alpha;
    		this.y += ( v.y - this.y ) * alpha;

    		return this;

    	}

    	lerpVectors( v1, v2, alpha ) {

    		this.x = v1.x + ( v2.x - v1.x ) * alpha;
    		this.y = v1.y + ( v2.y - v1.y ) * alpha;

    		return this;

    	}

    	equals( v ) {

    		return ( ( v.x === this.x ) && ( v.y === this.y ) );

    	}

    	fromArray( array, offset = 0 ) {

    		this.x = array[ offset ];
    		this.y = array[ offset + 1 ];

    		return this;

    	}

    	toArray( array = [], offset = 0 ) {

    		array[ offset ] = this.x;
    		array[ offset + 1 ] = this.y;

    		return array;

    	}

    	fromBufferAttribute( attribute, index ) {

    		this.x = attribute.getX( index );
    		this.y = attribute.getY( index );

    		return this;

    	}

    	rotateAround( center, angle ) {

    		const c = Math.cos( angle ), s = Math.sin( angle );

    		const x = this.x - center.x;
    		const y = this.y - center.y;

    		this.x = x * c - y * s + center.x;
    		this.y = x * s + y * c + center.y;

    		return this;

    	}

    	random() {

    		this.x = Math.random();
    		this.y = Math.random();

    		return this;

    	}

    	*[ Symbol.iterator ]() {

    		yield this.x;
    		yield this.y;

    	}

    }

    class Matrix3 {

    	constructor() {

    		Matrix3.prototype.isMatrix3 = true;

    		this.elements = [

    			1, 0, 0,
    			0, 1, 0,
    			0, 0, 1

    		];

    	}

    	set( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {

    		const te = this.elements;

    		te[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;
    		te[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;
    		te[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;

    		return this;

    	}

    	identity() {

    		this.set(

    			1, 0, 0,
    			0, 1, 0,
    			0, 0, 1

    		);

    		return this;

    	}

    	copy( m ) {

    		const te = this.elements;
    		const me = m.elements;

    		te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];
    		te[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];
    		te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];

    		return this;

    	}

    	extractBasis( xAxis, yAxis, zAxis ) {

    		xAxis.setFromMatrix3Column( this, 0 );
    		yAxis.setFromMatrix3Column( this, 1 );
    		zAxis.setFromMatrix3Column( this, 2 );

    		return this;

    	}

    	setFromMatrix4( m ) {

    		const me = m.elements;

    		this.set(

    			me[ 0 ], me[ 4 ], me[ 8 ],
    			me[ 1 ], me[ 5 ], me[ 9 ],
    			me[ 2 ], me[ 6 ], me[ 10 ]

    		);

    		return this;

    	}

    	multiply( m ) {

    		return this.multiplyMatrices( this, m );

    	}

    	premultiply( m ) {

    		return this.multiplyMatrices( m, this );

    	}

    	multiplyMatrices( a, b ) {

    		const ae = a.elements;
    		const be = b.elements;
    		const te = this.elements;

    		const a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];
    		const a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];
    		const a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];

    		const b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];
    		const b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];
    		const b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];

    		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;
    		te[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;
    		te[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;

    		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;
    		te[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;
    		te[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;

    		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;
    		te[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;
    		te[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;

    		return this;

    	}

    	multiplyScalar( s ) {

    		const te = this.elements;

    		te[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;
    		te[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;
    		te[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;

    		return this;

    	}

    	determinant() {

    		const te = this.elements;

    		const a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],
    			d = te[ 3 ], e = te[ 4 ], f = te[ 5 ],
    			g = te[ 6 ], h = te[ 7 ], i = te[ 8 ];

    		return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;

    	}

    	invert() {

    		const te = this.elements,

    			n11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ],
    			n12 = te[ 3 ], n22 = te[ 4 ], n32 = te[ 5 ],
    			n13 = te[ 6 ], n23 = te[ 7 ], n33 = te[ 8 ],

    			t11 = n33 * n22 - n32 * n23,
    			t12 = n32 * n13 - n33 * n12,
    			t13 = n23 * n12 - n22 * n13,

    			det = n11 * t11 + n21 * t12 + n31 * t13;

    		if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0 );

    		const detInv = 1 / det;

    		te[ 0 ] = t11 * detInv;
    		te[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;
    		te[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;

    		te[ 3 ] = t12 * detInv;
    		te[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;
    		te[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;

    		te[ 6 ] = t13 * detInv;
    		te[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;
    		te[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;

    		return this;

    	}

    	transpose() {

    		let tmp;
    		const m = this.elements;

    		tmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;
    		tmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;
    		tmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;

    		return this;

    	}

    	getNormalMatrix( matrix4 ) {

    		return this.setFromMatrix4( matrix4 ).invert().transpose();

    	}

    	transposeIntoArray( r ) {

    		const m = this.elements;

    		r[ 0 ] = m[ 0 ];
    		r[ 1 ] = m[ 3 ];
    		r[ 2 ] = m[ 6 ];
    		r[ 3 ] = m[ 1 ];
    		r[ 4 ] = m[ 4 ];
    		r[ 5 ] = m[ 7 ];
    		r[ 6 ] = m[ 2 ];
    		r[ 7 ] = m[ 5 ];
    		r[ 8 ] = m[ 8 ];

    		return this;

    	}

    	setUvTransform( tx, ty, sx, sy, rotation, cx, cy ) {

    		const c = Math.cos( rotation );
    		const s = Math.sin( rotation );

    		this.set(
    			sx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,
    			- sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,
    			0, 0, 1
    		);

    		return this;

    	}

    	scale( sx, sy ) {

    		const te = this.elements;

    		te[ 0 ] *= sx; te[ 3 ] *= sx; te[ 6 ] *= sx;
    		te[ 1 ] *= sy; te[ 4 ] *= sy; te[ 7 ] *= sy;

    		return this;

    	}

    	rotate( theta ) {

    		const c = Math.cos( theta );
    		const s = Math.sin( theta );

    		const te = this.elements;

    		const a11 = te[ 0 ], a12 = te[ 3 ], a13 = te[ 6 ];
    		const a21 = te[ 1 ], a22 = te[ 4 ], a23 = te[ 7 ];

    		te[ 0 ] = c * a11 + s * a21;
    		te[ 3 ] = c * a12 + s * a22;
    		te[ 6 ] = c * a13 + s * a23;

    		te[ 1 ] = - s * a11 + c * a21;
    		te[ 4 ] = - s * a12 + c * a22;
    		te[ 7 ] = - s * a13 + c * a23;

    		return this;

    	}

    	translate( tx, ty ) {

    		const te = this.elements;

    		te[ 0 ] += tx * te[ 2 ]; te[ 3 ] += tx * te[ 5 ]; te[ 6 ] += tx * te[ 8 ];
    		te[ 1 ] += ty * te[ 2 ]; te[ 4 ] += ty * te[ 5 ]; te[ 7 ] += ty * te[ 8 ];

    		return this;

    	}

    	equals( matrix ) {

    		const te = this.elements;
    		const me = matrix.elements;

    		for ( let i = 0; i < 9; i ++ ) {

    			if ( te[ i ] !== me[ i ] ) return false;

    		}

    		return true;

    	}

    	fromArray( array, offset = 0 ) {

    		for ( let i = 0; i < 9; i ++ ) {

    			this.elements[ i ] = array[ i + offset ];

    		}

    		return this;

    	}

    	toArray( array = [], offset = 0 ) {

    		const te = this.elements;

    		array[ offset ] = te[ 0 ];
    		array[ offset + 1 ] = te[ 1 ];
    		array[ offset + 2 ] = te[ 2 ];

    		array[ offset + 3 ] = te[ 3 ];
    		array[ offset + 4 ] = te[ 4 ];
    		array[ offset + 5 ] = te[ 5 ];

    		array[ offset + 6 ] = te[ 6 ];
    		array[ offset + 7 ] = te[ 7 ];
    		array[ offset + 8 ] = te[ 8 ];

    		return array;

    	}

    	clone() {

    		return new this.constructor().fromArray( this.elements );

    	}

    }

    function arrayNeedsUint32( array ) {

    	// assumes larger values usually on last

    	for ( let i = array.length - 1; i >= 0; -- i ) {

    		if ( array[ i ] >= 65535 ) return true; // account for PRIMITIVE_RESTART_FIXED_INDEX, #24565

    	}

    	return false;

    }

    const TYPED_ARRAYS = {
    	Int8Array: Int8Array,
    	Uint8Array: Uint8Array,
    	Uint8ClampedArray: Uint8ClampedArray,
    	Int16Array: Int16Array,
    	Uint16Array: Uint16Array,
    	Int32Array: Int32Array,
    	Uint32Array: Uint32Array,
    	Float32Array: Float32Array,
    	Float64Array: Float64Array
    };

    function getTypedArray( type, buffer ) {

    	return new TYPED_ARRAYS[ type ]( buffer );

    }

    function createElementNS( name ) {

    	return document.createElementNS( 'http://www.w3.org/1999/xhtml', name );

    }

    function SRGBToLinear( c ) {

    	return ( c < 0.04045 ) ? c * 0.0773993808 : Math.pow( c * 0.9478672986 + 0.0521327014, 2.4 );

    }

    function LinearToSRGB( c ) {

    	return ( c < 0.0031308 ) ? c * 12.92 : 1.055 * ( Math.pow( c, 0.41666 ) ) - 0.055;

    }

    // JavaScript RGB-to-RGB transforms, defined as
    // FN[InputColorSpace][OutputColorSpace] callback functions.
    const FN = {
    	[ SRGBColorSpace ]: { [ LinearSRGBColorSpace ]: SRGBToLinear },
    	[ LinearSRGBColorSpace ]: { [ SRGBColorSpace ]: LinearToSRGB },
    };

    const ColorManagement = {

    	legacyMode: true,

    	get workingColorSpace() {

    		return LinearSRGBColorSpace;

    	},

    	set workingColorSpace( colorSpace ) {

    		console.warn( 'THREE.ColorManagement: .workingColorSpace is readonly.' );

    	},

    	convert: function ( color, sourceColorSpace, targetColorSpace ) {

    		if ( this.legacyMode || sourceColorSpace === targetColorSpace || ! sourceColorSpace || ! targetColorSpace ) {

    			return color;

    		}

    		if ( FN[ sourceColorSpace ] && FN[ sourceColorSpace ][ targetColorSpace ] !== undefined ) {

    			const fn = FN[ sourceColorSpace ][ targetColorSpace ];

    			color.r = fn( color.r );
    			color.g = fn( color.g );
    			color.b = fn( color.b );

    			return color;

    		}

    		throw new Error( 'Unsupported color space conversion.' );

    	},

    	fromWorkingColorSpace: function ( color, targetColorSpace ) {

    		return this.convert( color, this.workingColorSpace, targetColorSpace );

    	},

    	toWorkingColorSpace: function ( color, sourceColorSpace ) {

    		return this.convert( color, sourceColorSpace, this.workingColorSpace );

    	},

    };

    const _colorKeywords = { 'aliceblue': 0xF0F8FF, 'antiquewhite': 0xFAEBD7, 'aqua': 0x00FFFF, 'aquamarine': 0x7FFFD4, 'azure': 0xF0FFFF,
    	'beige': 0xF5F5DC, 'bisque': 0xFFE4C4, 'black': 0x000000, 'blanchedalmond': 0xFFEBCD, 'blue': 0x0000FF, 'blueviolet': 0x8A2BE2,
    	'brown': 0xA52A2A, 'burlywood': 0xDEB887, 'cadetblue': 0x5F9EA0, 'chartreuse': 0x7FFF00, 'chocolate': 0xD2691E, 'coral': 0xFF7F50,
    	'cornflowerblue': 0x6495ED, 'cornsilk': 0xFFF8DC, 'crimson': 0xDC143C, 'cyan': 0x00FFFF, 'darkblue': 0x00008B, 'darkcyan': 0x008B8B,
    	'darkgoldenrod': 0xB8860B, 'darkgray': 0xA9A9A9, 'darkgreen': 0x006400, 'darkgrey': 0xA9A9A9, 'darkkhaki': 0xBDB76B, 'darkmagenta': 0x8B008B,
    	'darkolivegreen': 0x556B2F, 'darkorange': 0xFF8C00, 'darkorchid': 0x9932CC, 'darkred': 0x8B0000, 'darksalmon': 0xE9967A, 'darkseagreen': 0x8FBC8F,
    	'darkslateblue': 0x483D8B, 'darkslategray': 0x2F4F4F, 'darkslategrey': 0x2F4F4F, 'darkturquoise': 0x00CED1, 'darkviolet': 0x9400D3,
    	'deeppink': 0xFF1493, 'deepskyblue': 0x00BFFF, 'dimgray': 0x696969, 'dimgrey': 0x696969, 'dodgerblue': 0x1E90FF, 'firebrick': 0xB22222,
    	'floralwhite': 0xFFFAF0, 'forestgreen': 0x228B22, 'fuchsia': 0xFF00FF, 'gainsboro': 0xDCDCDC, 'ghostwhite': 0xF8F8FF, 'gold': 0xFFD700,
    	'goldenrod': 0xDAA520, 'gray': 0x808080, 'green': 0x008000, 'greenyellow': 0xADFF2F, 'grey': 0x808080, 'honeydew': 0xF0FFF0, 'hotpink': 0xFF69B4,
    	'indianred': 0xCD5C5C, 'indigo': 0x4B0082, 'ivory': 0xFFFFF0, 'khaki': 0xF0E68C, 'lavender': 0xE6E6FA, 'lavenderblush': 0xFFF0F5, 'lawngreen': 0x7CFC00,
    	'lemonchiffon': 0xFFFACD, 'lightblue': 0xADD8E6, 'lightcoral': 0xF08080, 'lightcyan': 0xE0FFFF, 'lightgoldenrodyellow': 0xFAFAD2, 'lightgray': 0xD3D3D3,
    	'lightgreen': 0x90EE90, 'lightgrey': 0xD3D3D3, 'lightpink': 0xFFB6C1, 'lightsalmon': 0xFFA07A, 'lightseagreen': 0x20B2AA, 'lightskyblue': 0x87CEFA,
    	'lightslategray': 0x778899, 'lightslategrey': 0x778899, 'lightsteelblue': 0xB0C4DE, 'lightyellow': 0xFFFFE0, 'lime': 0x00FF00, 'limegreen': 0x32CD32,
    	'linen': 0xFAF0E6, 'magenta': 0xFF00FF, 'maroon': 0x800000, 'mediumaquamarine': 0x66CDAA, 'mediumblue': 0x0000CD, 'mediumorchid': 0xBA55D3,
    	'mediumpurple': 0x9370DB, 'mediumseagreen': 0x3CB371, 'mediumslateblue': 0x7B68EE, 'mediumspringgreen': 0x00FA9A, 'mediumturquoise': 0x48D1CC,
    	'mediumvioletred': 0xC71585, 'midnightblue': 0x191970, 'mintcream': 0xF5FFFA, 'mistyrose': 0xFFE4E1, 'moccasin': 0xFFE4B5, 'navajowhite': 0xFFDEAD,
    	'navy': 0x000080, 'oldlace': 0xFDF5E6, 'olive': 0x808000, 'olivedrab': 0x6B8E23, 'orange': 0xFFA500, 'orangered': 0xFF4500, 'orchid': 0xDA70D6,
    	'palegoldenrod': 0xEEE8AA, 'palegreen': 0x98FB98, 'paleturquoise': 0xAFEEEE, 'palevioletred': 0xDB7093, 'papayawhip': 0xFFEFD5, 'peachpuff': 0xFFDAB9,
    	'peru': 0xCD853F, 'pink': 0xFFC0CB, 'plum': 0xDDA0DD, 'powderblue': 0xB0E0E6, 'purple': 0x800080, 'rebeccapurple': 0x663399, 'red': 0xFF0000, 'rosybrown': 0xBC8F8F,
    	'royalblue': 0x4169E1, 'saddlebrown': 0x8B4513, 'salmon': 0xFA8072, 'sandybrown': 0xF4A460, 'seagreen': 0x2E8B57, 'seashell': 0xFFF5EE,
    	'sienna': 0xA0522D, 'silver': 0xC0C0C0, 'skyblue': 0x87CEEB, 'slateblue': 0x6A5ACD, 'slategray': 0x708090, 'slategrey': 0x708090, 'snow': 0xFFFAFA,
    	'springgreen': 0x00FF7F, 'steelblue': 0x4682B4, 'tan': 0xD2B48C, 'teal': 0x008080, 'thistle': 0xD8BFD8, 'tomato': 0xFF6347, 'turquoise': 0x40E0D0,
    	'violet': 0xEE82EE, 'wheat': 0xF5DEB3, 'white': 0xFFFFFF, 'whitesmoke': 0xF5F5F5, 'yellow': 0xFFFF00, 'yellowgreen': 0x9ACD32 };

    const _rgb = { r: 0, g: 0, b: 0 };
    const _hslA = { h: 0, s: 0, l: 0 };
    const _hslB = { h: 0, s: 0, l: 0 };

    function hue2rgb( p, q, t ) {

    	if ( t < 0 ) t += 1;
    	if ( t > 1 ) t -= 1;
    	if ( t < 1 / 6 ) return p + ( q - p ) * 6 * t;
    	if ( t < 1 / 2 ) return q;
    	if ( t < 2 / 3 ) return p + ( q - p ) * 6 * ( 2 / 3 - t );
    	return p;

    }

    function toComponents( source, target ) {

    	target.r = source.r;
    	target.g = source.g;
    	target.b = source.b;

    	return target;

    }

    class Color {

    	constructor( r, g, b ) {

    		this.isColor = true;

    		this.r = 1;
    		this.g = 1;
    		this.b = 1;

    		if ( g === undefined && b === undefined ) {

    			// r is THREE.Color, hex or string
    			return this.set( r );

    		}

    		return this.setRGB( r, g, b );

    	}

    	set( value ) {

    		if ( value && value.isColor ) {

    			this.copy( value );

    		} else if ( typeof value === 'number' ) {

    			this.setHex( value );

    		} else if ( typeof value === 'string' ) {

    			this.setStyle( value );

    		}

    		return this;

    	}

    	setScalar( scalar ) {

    		this.r = scalar;
    		this.g = scalar;
    		this.b = scalar;

    		return this;

    	}

    	setHex( hex, colorSpace = SRGBColorSpace ) {

    		hex = Math.floor( hex );

    		this.r = ( hex >> 16 & 255 ) / 255;
    		this.g = ( hex >> 8 & 255 ) / 255;
    		this.b = ( hex & 255 ) / 255;

    		ColorManagement.toWorkingColorSpace( this, colorSpace );

    		return this;

    	}

    	setRGB( r, g, b, colorSpace = LinearSRGBColorSpace ) {

    		this.r = r;
    		this.g = g;
    		this.b = b;

    		ColorManagement.toWorkingColorSpace( this, colorSpace );

    		return this;

    	}

    	setHSL( h, s, l, colorSpace = LinearSRGBColorSpace ) {

    		// h,s,l ranges are in 0.0 - 1.0
    		h = euclideanModulo( h, 1 );
    		s = clamp( s, 0, 1 );
    		l = clamp( l, 0, 1 );

    		if ( s === 0 ) {

    			this.r = this.g = this.b = l;

    		} else {

    			const p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );
    			const q = ( 2 * l ) - p;

    			this.r = hue2rgb( q, p, h + 1 / 3 );
    			this.g = hue2rgb( q, p, h );
    			this.b = hue2rgb( q, p, h - 1 / 3 );

    		}

    		ColorManagement.toWorkingColorSpace( this, colorSpace );

    		return this;

    	}

    	setStyle( style, colorSpace = SRGBColorSpace ) {

    		function handleAlpha( string ) {

    			if ( string === undefined ) return;

    			if ( parseFloat( string ) < 1 ) {

    				console.warn( 'THREE.Color: Alpha component of ' + style + ' will be ignored.' );

    			}

    		}


    		let m;

    		if ( m = /^((?:rgb|hsl)a?)\(([^\)]*)\)/.exec( style ) ) {

    			// rgb / hsl

    			let color;
    			const name = m[ 1 ];
    			const components = m[ 2 ];

    			switch ( name ) {

    				case 'rgb':
    				case 'rgba':

    					if ( color = /^\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec( components ) ) {

    						// rgb(255,0,0) rgba(255,0,0,0.5)
    						this.r = Math.min( 255, parseInt( color[ 1 ], 10 ) ) / 255;
    						this.g = Math.min( 255, parseInt( color[ 2 ], 10 ) ) / 255;
    						this.b = Math.min( 255, parseInt( color[ 3 ], 10 ) ) / 255;

    						ColorManagement.toWorkingColorSpace( this, colorSpace );

    						handleAlpha( color[ 4 ] );

    						return this;

    					}

    					if ( color = /^\s*(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec( components ) ) {

    						// rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)
    						this.r = Math.min( 100, parseInt( color[ 1 ], 10 ) ) / 100;
    						this.g = Math.min( 100, parseInt( color[ 2 ], 10 ) ) / 100;
    						this.b = Math.min( 100, parseInt( color[ 3 ], 10 ) ) / 100;

    						ColorManagement.toWorkingColorSpace( this, colorSpace );

    						handleAlpha( color[ 4 ] );

    						return this;

    					}

    					break;

    				case 'hsl':
    				case 'hsla':

    					if ( color = /^\s*(\d*\.?\d+)\s*,\s*(\d*\.?\d+)\%\s*,\s*(\d*\.?\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec( components ) ) {

    						// hsl(120,50%,50%) hsla(120,50%,50%,0.5)
    						const h = parseFloat( color[ 1 ] ) / 360;
    						const s = parseFloat( color[ 2 ] ) / 100;
    						const l = parseFloat( color[ 3 ] ) / 100;

    						handleAlpha( color[ 4 ] );

    						return this.setHSL( h, s, l, colorSpace );

    					}

    					break;

    			}

    		} else if ( m = /^\#([A-Fa-f\d]+)$/.exec( style ) ) {

    			// hex color

    			const hex = m[ 1 ];
    			const size = hex.length;

    			if ( size === 3 ) {

    				// #ff0
    				this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 0 ), 16 ) / 255;
    				this.g = parseInt( hex.charAt( 1 ) + hex.charAt( 1 ), 16 ) / 255;
    				this.b = parseInt( hex.charAt( 2 ) + hex.charAt( 2 ), 16 ) / 255;

    				ColorManagement.toWorkingColorSpace( this, colorSpace );

    				return this;

    			} else if ( size === 6 ) {

    				// #ff0000
    				this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 1 ), 16 ) / 255;
    				this.g = parseInt( hex.charAt( 2 ) + hex.charAt( 3 ), 16 ) / 255;
    				this.b = parseInt( hex.charAt( 4 ) + hex.charAt( 5 ), 16 ) / 255;

    				ColorManagement.toWorkingColorSpace( this, colorSpace );

    				return this;

    			}

    		}

    		if ( style && style.length > 0 ) {

    			return this.setColorName( style, colorSpace );

    		}

    		return this;

    	}

    	setColorName( style, colorSpace = SRGBColorSpace ) {

    		// color keywords
    		const hex = _colorKeywords[ style.toLowerCase() ];

    		if ( hex !== undefined ) {

    			// red
    			this.setHex( hex, colorSpace );

    		} else {

    			// unknown color
    			console.warn( 'THREE.Color: Unknown color ' + style );

    		}

    		return this;

    	}

    	clone() {

    		return new this.constructor( this.r, this.g, this.b );

    	}

    	copy( color ) {

    		this.r = color.r;
    		this.g = color.g;
    		this.b = color.b;

    		return this;

    	}

    	copySRGBToLinear( color ) {

    		this.r = SRGBToLinear( color.r );
    		this.g = SRGBToLinear( color.g );
    		this.b = SRGBToLinear( color.b );

    		return this;

    	}

    	copyLinearToSRGB( color ) {

    		this.r = LinearToSRGB( color.r );
    		this.g = LinearToSRGB( color.g );
    		this.b = LinearToSRGB( color.b );

    		return this;

    	}

    	convertSRGBToLinear() {

    		this.copySRGBToLinear( this );

    		return this;

    	}

    	convertLinearToSRGB() {

    		this.copyLinearToSRGB( this );

    		return this;

    	}

    	getHex( colorSpace = SRGBColorSpace ) {

    		ColorManagement.fromWorkingColorSpace( toComponents( this, _rgb ), colorSpace );

    		return clamp( _rgb.r * 255, 0, 255 ) << 16 ^ clamp( _rgb.g * 255, 0, 255 ) << 8 ^ clamp( _rgb.b * 255, 0, 255 ) << 0;

    	}

    	getHexString( colorSpace = SRGBColorSpace ) {

    		return ( '000000' + this.getHex( colorSpace ).toString( 16 ) ).slice( - 6 );

    	}

    	getHSL( target, colorSpace = LinearSRGBColorSpace ) {

    		// h,s,l ranges are in 0.0 - 1.0

    		ColorManagement.fromWorkingColorSpace( toComponents( this, _rgb ), colorSpace );

    		const r = _rgb.r, g = _rgb.g, b = _rgb.b;

    		const max = Math.max( r, g, b );
    		const min = Math.min( r, g, b );

    		let hue, saturation;
    		const lightness = ( min + max ) / 2.0;

    		if ( min === max ) {

    			hue = 0;
    			saturation = 0;

    		} else {

    			const delta = max - min;

    			saturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );

    			switch ( max ) {

    				case r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;
    				case g: hue = ( b - r ) / delta + 2; break;
    				case b: hue = ( r - g ) / delta + 4; break;

    			}

    			hue /= 6;

    		}

    		target.h = hue;
    		target.s = saturation;
    		target.l = lightness;

    		return target;

    	}

    	getRGB( target, colorSpace = LinearSRGBColorSpace ) {

    		ColorManagement.fromWorkingColorSpace( toComponents( this, _rgb ), colorSpace );

    		target.r = _rgb.r;
    		target.g = _rgb.g;
    		target.b = _rgb.b;

    		return target;

    	}

    	getStyle( colorSpace = SRGBColorSpace ) {

    		ColorManagement.fromWorkingColorSpace( toComponents( this, _rgb ), colorSpace );

    		if ( colorSpace !== SRGBColorSpace ) {

    			// Requires CSS Color Module Level 4 (https://www.w3.org/TR/css-color-4/).
    			return `color(${ colorSpace } ${ _rgb.r } ${ _rgb.g } ${ _rgb.b })`;

    		}

    		return `rgb(${( _rgb.r * 255 ) | 0},${( _rgb.g * 255 ) | 0},${( _rgb.b * 255 ) | 0})`;

    	}

    	offsetHSL( h, s, l ) {

    		this.getHSL( _hslA );

    		_hslA.h += h; _hslA.s += s; _hslA.l += l;

    		this.setHSL( _hslA.h, _hslA.s, _hslA.l );

    		return this;

    	}

    	add( color ) {

    		this.r += color.r;
    		this.g += color.g;
    		this.b += color.b;

    		return this;

    	}

    	addColors( color1, color2 ) {

    		this.r = color1.r + color2.r;
    		this.g = color1.g + color2.g;
    		this.b = color1.b + color2.b;

    		return this;

    	}

    	addScalar( s ) {

    		this.r += s;
    		this.g += s;
    		this.b += s;

    		return this;

    	}

    	sub( color ) {

    		this.r = Math.max( 0, this.r - color.r );
    		this.g = Math.max( 0, this.g - color.g );
    		this.b = Math.max( 0, this.b - color.b );

    		return this;

    	}

    	multiply( color ) {

    		this.r *= color.r;
    		this.g *= color.g;
    		this.b *= color.b;

    		return this;

    	}

    	multiplyScalar( s ) {

    		this.r *= s;
    		this.g *= s;
    		this.b *= s;

    		return this;

    	}

    	lerp( color, alpha ) {

    		this.r += ( color.r - this.r ) * alpha;
    		this.g += ( color.g - this.g ) * alpha;
    		this.b += ( color.b - this.b ) * alpha;

    		return this;

    	}

    	lerpColors( color1, color2, alpha ) {

    		this.r = color1.r + ( color2.r - color1.r ) * alpha;
    		this.g = color1.g + ( color2.g - color1.g ) * alpha;
    		this.b = color1.b + ( color2.b - color1.b ) * alpha;

    		return this;

    	}

    	lerpHSL( color, alpha ) {

    		this.getHSL( _hslA );
    		color.getHSL( _hslB );

    		const h = lerp( _hslA.h, _hslB.h, alpha );
    		const s = lerp( _hslA.s, _hslB.s, alpha );
    		const l = lerp( _hslA.l, _hslB.l, alpha );

    		this.setHSL( h, s, l );

    		return this;

    	}

    	equals( c ) {

    		return ( c.r === this.r ) && ( c.g === this.g ) && ( c.b === this.b );

    	}

    	fromArray( array, offset = 0 ) {

    		this.r = array[ offset ];
    		this.g = array[ offset + 1 ];
    		this.b = array[ offset + 2 ];

    		return this;

    	}

    	toArray( array = [], offset = 0 ) {

    		array[ offset ] = this.r;
    		array[ offset + 1 ] = this.g;
    		array[ offset + 2 ] = this.b;

    		return array;

    	}

    	fromBufferAttribute( attribute, index ) {

    		this.r = attribute.getX( index );
    		this.g = attribute.getY( index );
    		this.b = attribute.getZ( index );

    		return this;

    	}

    	toJSON() {

    		return this.getHex();

    	}

    	*[ Symbol.iterator ]() {

    		yield this.r;
    		yield this.g;
    		yield this.b;

    	}

    }

    Color.NAMES = _colorKeywords;

    let _canvas;

    class ImageUtils {

    	static getDataURL( image ) {

    		if ( /^data:/i.test( image.src ) ) {

    			return image.src;

    		}

    		if ( typeof HTMLCanvasElement == 'undefined' ) {

    			return image.src;

    		}

    		let canvas;

    		if ( image instanceof HTMLCanvasElement ) {

    			canvas = image;

    		} else {

    			if ( _canvas === undefined ) _canvas = createElementNS( 'canvas' );

    			_canvas.width = image.width;
    			_canvas.height = image.height;

    			const context = _canvas.getContext( '2d' );

    			if ( image instanceof ImageData ) {

    				context.putImageData( image, 0, 0 );

    			} else {

    				context.drawImage( image, 0, 0, image.width, image.height );

    			}

    			canvas = _canvas;

    		}

    		if ( canvas.width > 2048 || canvas.height > 2048 ) {

    			console.warn( 'THREE.ImageUtils.getDataURL: Image converted to jpg for performance reasons', image );

    			return canvas.toDataURL( 'image/jpeg', 0.6 );

    		} else {

    			return canvas.toDataURL( 'image/png' );

    		}

    	}

    	static sRGBToLinear( image ) {

    		if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
    			( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
    			( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {

    			const canvas = createElementNS( 'canvas' );

    			canvas.width = image.width;
    			canvas.height = image.height;

    			const context = canvas.getContext( '2d' );
    			context.drawImage( image, 0, 0, image.width, image.height );

    			const imageData = context.getImageData( 0, 0, image.width, image.height );
    			const data = imageData.data;

    			for ( let i = 0; i < data.length; i ++ ) {

    				data[ i ] = SRGBToLinear( data[ i ] / 255 ) * 255;

    			}

    			context.putImageData( imageData, 0, 0 );

    			return canvas;

    		} else if ( image.data ) {

    			const data = image.data.slice( 0 );

    			for ( let i = 0; i < data.length; i ++ ) {

    				if ( data instanceof Uint8Array || data instanceof Uint8ClampedArray ) {

    					data[ i ] = Math.floor( SRGBToLinear( data[ i ] / 255 ) * 255 );

    				} else {

    					// assuming float

    					data[ i ] = SRGBToLinear( data[ i ] );

    				}

    			}

    			return {
    				data: data,
    				width: image.width,
    				height: image.height
    			};

    		} else {

    			console.warn( 'THREE.ImageUtils.sRGBToLinear(): Unsupported image type. No color space conversion applied.' );
    			return image;

    		}

    	}

    }

    class Source {

    	constructor( data = null ) {

    		this.isSource = true;

    		this.uuid = generateUUID();

    		this.data = data;

    		this.version = 0;

    	}

    	set needsUpdate( value ) {

    		if ( value === true ) this.version ++;

    	}

    	toJSON( meta ) {

    		const isRootObject = ( meta === undefined || typeof meta === 'string' );

    		if ( ! isRootObject && meta.images[ this.uuid ] !== undefined ) {

    			return meta.images[ this.uuid ];

    		}

    		const output = {
    			uuid: this.uuid,
    			url: ''
    		};

    		const data = this.data;

    		if ( data !== null ) {

    			let url;

    			if ( Array.isArray( data ) ) {

    				// cube texture

    				url = [];

    				for ( let i = 0, l = data.length; i < l; i ++ ) {

    					if ( data[ i ].isDataTexture ) {

    						url.push( serializeImage( data[ i ].image ) );

    					} else {

    						url.push( serializeImage( data[ i ] ) );

    					}

    				}

    			} else {

    				// texture

    				url = serializeImage( data );

    			}

    			output.url = url;

    		}

    		if ( ! isRootObject ) {

    			meta.images[ this.uuid ] = output;

    		}

    		return output;

    	}

    }

    function serializeImage( image ) {

    	if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
    		( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
    		( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {

    		// default images

    		return ImageUtils.getDataURL( image );

    	} else {

    		if ( image.data ) {

    			// images of DataTexture

    			return {
    				data: Array.from( image.data ),
    				width: image.width,
    				height: image.height,
    				type: image.data.constructor.name
    			};

    		} else {

    			console.warn( 'THREE.Texture: Unable to serialize Texture.' );
    			return {};

    		}

    	}

    }

    let textureId = 0;

    class Texture extends EventDispatcher {

    	constructor( image = Texture.DEFAULT_IMAGE, mapping = Texture.DEFAULT_MAPPING, wrapS = ClampToEdgeWrapping, wrapT = ClampToEdgeWrapping, magFilter = LinearFilter, minFilter = LinearMipmapLinearFilter, format = RGBAFormat, type = UnsignedByteType, anisotropy = 1, encoding = LinearEncoding ) {

    		super();

    		this.isTexture = true;

    		Object.defineProperty( this, 'id', { value: textureId ++ } );

    		this.uuid = generateUUID();

    		this.name = '';

    		this.source = new Source( image );
    		this.mipmaps = [];

    		this.mapping = mapping;

    		this.wrapS = wrapS;
    		this.wrapT = wrapT;

    		this.magFilter = magFilter;
    		this.minFilter = minFilter;

    		this.anisotropy = anisotropy;

    		this.format = format;
    		this.internalFormat = null;
    		this.type = type;

    		this.offset = new Vector2( 0, 0 );
    		this.repeat = new Vector2( 1, 1 );
    		this.center = new Vector2( 0, 0 );
    		this.rotation = 0;

    		this.matrixAutoUpdate = true;
    		this.matrix = new Matrix3();

    		this.generateMipmaps = true;
    		this.premultiplyAlpha = false;
    		this.flipY = true;
    		this.unpackAlignment = 4;	// valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)

    		// Values of encoding !== THREE.LinearEncoding only supported on map, envMap and emissiveMap.
    		//
    		// Also changing the encoding after already used by a Material will not automatically make the Material
    		// update. You need to explicitly call Material.needsUpdate to trigger it to recompile.
    		this.encoding = encoding;

    		this.userData = {};

    		this.version = 0;
    		this.onUpdate = null;

    		this.isRenderTargetTexture = false; // indicates whether a texture belongs to a render target or not
    		this.needsPMREMUpdate = false; // indicates whether this texture should be processed by PMREMGenerator or not (only relevant for render target textures)

    	}

    	get image() {

    		return this.source.data;

    	}

    	set image( value ) {

    		this.source.data = value;

    	}

    	updateMatrix() {

    		this.matrix.setUvTransform( this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y );

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    	copy( source ) {

    		this.name = source.name;

    		this.source = source.source;
    		this.mipmaps = source.mipmaps.slice( 0 );

    		this.mapping = source.mapping;

    		this.wrapS = source.wrapS;
    		this.wrapT = source.wrapT;

    		this.magFilter = source.magFilter;
    		this.minFilter = source.minFilter;

    		this.anisotropy = source.anisotropy;

    		this.format = source.format;
    		this.internalFormat = source.internalFormat;
    		this.type = source.type;

    		this.offset.copy( source.offset );
    		this.repeat.copy( source.repeat );
    		this.center.copy( source.center );
    		this.rotation = source.rotation;

    		this.matrixAutoUpdate = source.matrixAutoUpdate;
    		this.matrix.copy( source.matrix );

    		this.generateMipmaps = source.generateMipmaps;
    		this.premultiplyAlpha = source.premultiplyAlpha;
    		this.flipY = source.flipY;
    		this.unpackAlignment = source.unpackAlignment;
    		this.encoding = source.encoding;

    		this.userData = JSON.parse( JSON.stringify( source.userData ) );

    		this.needsUpdate = true;

    		return this;

    	}

    	toJSON( meta ) {

    		const isRootObject = ( meta === undefined || typeof meta === 'string' );

    		if ( ! isRootObject && meta.textures[ this.uuid ] !== undefined ) {

    			return meta.textures[ this.uuid ];

    		}

    		const output = {

    			metadata: {
    				version: 4.5,
    				type: 'Texture',
    				generator: 'Texture.toJSON'
    			},

    			uuid: this.uuid,
    			name: this.name,

    			image: this.source.toJSON( meta ).uuid,

    			mapping: this.mapping,

    			repeat: [ this.repeat.x, this.repeat.y ],
    			offset: [ this.offset.x, this.offset.y ],
    			center: [ this.center.x, this.center.y ],
    			rotation: this.rotation,

    			wrap: [ this.wrapS, this.wrapT ],

    			format: this.format,
    			type: this.type,
    			encoding: this.encoding,

    			minFilter: this.minFilter,
    			magFilter: this.magFilter,
    			anisotropy: this.anisotropy,

    			flipY: this.flipY,

    			premultiplyAlpha: this.premultiplyAlpha,
    			unpackAlignment: this.unpackAlignment

    		};

    		if ( JSON.stringify( this.userData ) !== '{}' ) output.userData = this.userData;

    		if ( ! isRootObject ) {

    			meta.textures[ this.uuid ] = output;

    		}

    		return output;

    	}

    	dispose() {

    		this.dispatchEvent( { type: 'dispose' } );

    	}

    	transformUv( uv ) {

    		if ( this.mapping !== UVMapping ) return uv;

    		uv.applyMatrix3( this.matrix );

    		if ( uv.x < 0 || uv.x > 1 ) {

    			switch ( this.wrapS ) {

    				case RepeatWrapping:

    					uv.x = uv.x - Math.floor( uv.x );
    					break;

    				case ClampToEdgeWrapping:

    					uv.x = uv.x < 0 ? 0 : 1;
    					break;

    				case MirroredRepeatWrapping:

    					if ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {

    						uv.x = Math.ceil( uv.x ) - uv.x;

    					} else {

    						uv.x = uv.x - Math.floor( uv.x );

    					}

    					break;

    			}

    		}

    		if ( uv.y < 0 || uv.y > 1 ) {

    			switch ( this.wrapT ) {

    				case RepeatWrapping:

    					uv.y = uv.y - Math.floor( uv.y );
    					break;

    				case ClampToEdgeWrapping:

    					uv.y = uv.y < 0 ? 0 : 1;
    					break;

    				case MirroredRepeatWrapping:

    					if ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {

    						uv.y = Math.ceil( uv.y ) - uv.y;

    					} else {

    						uv.y = uv.y - Math.floor( uv.y );

    					}

    					break;

    			}

    		}

    		if ( this.flipY ) {

    			uv.y = 1 - uv.y;

    		}

    		return uv;

    	}

    	set needsUpdate( value ) {

    		if ( value === true ) {

    			this.version ++;
    			this.source.needsUpdate = true;

    		}

    	}

    }

    Texture.DEFAULT_IMAGE = null;
    Texture.DEFAULT_MAPPING = UVMapping;

    class Vector4 {

    	constructor( x = 0, y = 0, z = 0, w = 1 ) {

    		Vector4.prototype.isVector4 = true;

    		this.x = x;
    		this.y = y;
    		this.z = z;
    		this.w = w;

    	}

    	get width() {

    		return this.z;

    	}

    	set width( value ) {

    		this.z = value;

    	}

    	get height() {

    		return this.w;

    	}

    	set height( value ) {

    		this.w = value;

    	}

    	set( x, y, z, w ) {

    		this.x = x;
    		this.y = y;
    		this.z = z;
    		this.w = w;

    		return this;

    	}

    	setScalar( scalar ) {

    		this.x = scalar;
    		this.y = scalar;
    		this.z = scalar;
    		this.w = scalar;

    		return this;

    	}

    	setX( x ) {

    		this.x = x;

    		return this;

    	}

    	setY( y ) {

    		this.y = y;

    		return this;

    	}

    	setZ( z ) {

    		this.z = z;

    		return this;

    	}

    	setW( w ) {

    		this.w = w;

    		return this;

    	}

    	setComponent( index, value ) {

    		switch ( index ) {

    			case 0: this.x = value; break;
    			case 1: this.y = value; break;
    			case 2: this.z = value; break;
    			case 3: this.w = value; break;
    			default: throw new Error( 'index is out of range: ' + index );

    		}

    		return this;

    	}

    	getComponent( index ) {

    		switch ( index ) {

    			case 0: return this.x;
    			case 1: return this.y;
    			case 2: return this.z;
    			case 3: return this.w;
    			default: throw new Error( 'index is out of range: ' + index );

    		}

    	}

    	clone() {

    		return new this.constructor( this.x, this.y, this.z, this.w );

    	}

    	copy( v ) {

    		this.x = v.x;
    		this.y = v.y;
    		this.z = v.z;
    		this.w = ( v.w !== undefined ) ? v.w : 1;

    		return this;

    	}

    	add( v ) {

    		this.x += v.x;
    		this.y += v.y;
    		this.z += v.z;
    		this.w += v.w;

    		return this;

    	}

    	addScalar( s ) {

    		this.x += s;
    		this.y += s;
    		this.z += s;
    		this.w += s;

    		return this;

    	}

    	addVectors( a, b ) {

    		this.x = a.x + b.x;
    		this.y = a.y + b.y;
    		this.z = a.z + b.z;
    		this.w = a.w + b.w;

    		return this;

    	}

    	addScaledVector( v, s ) {

    		this.x += v.x * s;
    		this.y += v.y * s;
    		this.z += v.z * s;
    		this.w += v.w * s;

    		return this;

    	}

    	sub( v ) {

    		this.x -= v.x;
    		this.y -= v.y;
    		this.z -= v.z;
    		this.w -= v.w;

    		return this;

    	}

    	subScalar( s ) {

    		this.x -= s;
    		this.y -= s;
    		this.z -= s;
    		this.w -= s;

    		return this;

    	}

    	subVectors( a, b ) {

    		this.x = a.x - b.x;
    		this.y = a.y - b.y;
    		this.z = a.z - b.z;
    		this.w = a.w - b.w;

    		return this;

    	}

    	multiply( v ) {

    		this.x *= v.x;
    		this.y *= v.y;
    		this.z *= v.z;
    		this.w *= v.w;

    		return this;

    	}

    	multiplyScalar( scalar ) {

    		this.x *= scalar;
    		this.y *= scalar;
    		this.z *= scalar;
    		this.w *= scalar;

    		return this;

    	}

    	applyMatrix4( m ) {

    		const x = this.x, y = this.y, z = this.z, w = this.w;
    		const e = m.elements;

    		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] * w;
    		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] * w;
    		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] * w;
    		this.w = e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] * w;

    		return this;

    	}

    	divideScalar( scalar ) {

    		return this.multiplyScalar( 1 / scalar );

    	}

    	setAxisAngleFromQuaternion( q ) {

    		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm

    		// q is assumed to be normalized

    		this.w = 2 * Math.acos( q.w );

    		const s = Math.sqrt( 1 - q.w * q.w );

    		if ( s < 0.0001 ) {

    			this.x = 1;
    			this.y = 0;
    			this.z = 0;

    		} else {

    			this.x = q.x / s;
    			this.y = q.y / s;
    			this.z = q.z / s;

    		}

    		return this;

    	}

    	setAxisAngleFromRotationMatrix( m ) {

    		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm

    		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

    		let angle, x, y, z; // variables for result
    		const epsilon = 0.01,		// margin to allow for rounding errors
    			epsilon2 = 0.1,		// margin to distinguish between 0 and 180 degrees

    			te = m.elements,

    			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
    			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
    			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];

    		if ( ( Math.abs( m12 - m21 ) < epsilon ) &&
    		     ( Math.abs( m13 - m31 ) < epsilon ) &&
    		     ( Math.abs( m23 - m32 ) < epsilon ) ) {

    			// singularity found
    			// first check for identity matrix which must have +1 for all terms
    			// in leading diagonal and zero in other terms

    			if ( ( Math.abs( m12 + m21 ) < epsilon2 ) &&
    			     ( Math.abs( m13 + m31 ) < epsilon2 ) &&
    			     ( Math.abs( m23 + m32 ) < epsilon2 ) &&
    			     ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {

    				// this singularity is identity matrix so angle = 0

    				this.set( 1, 0, 0, 0 );

    				return this; // zero angle, arbitrary axis

    			}

    			// otherwise this singularity is angle = 180

    			angle = Math.PI;

    			const xx = ( m11 + 1 ) / 2;
    			const yy = ( m22 + 1 ) / 2;
    			const zz = ( m33 + 1 ) / 2;
    			const xy = ( m12 + m21 ) / 4;
    			const xz = ( m13 + m31 ) / 4;
    			const yz = ( m23 + m32 ) / 4;

    			if ( ( xx > yy ) && ( xx > zz ) ) {

    				// m11 is the largest diagonal term

    				if ( xx < epsilon ) {

    					x = 0;
    					y = 0.707106781;
    					z = 0.707106781;

    				} else {

    					x = Math.sqrt( xx );
    					y = xy / x;
    					z = xz / x;

    				}

    			} else if ( yy > zz ) {

    				// m22 is the largest diagonal term

    				if ( yy < epsilon ) {

    					x = 0.707106781;
    					y = 0;
    					z = 0.707106781;

    				} else {

    					y = Math.sqrt( yy );
    					x = xy / y;
    					z = yz / y;

    				}

    			} else {

    				// m33 is the largest diagonal term so base result on this

    				if ( zz < epsilon ) {

    					x = 0.707106781;
    					y = 0.707106781;
    					z = 0;

    				} else {

    					z = Math.sqrt( zz );
    					x = xz / z;
    					y = yz / z;

    				}

    			}

    			this.set( x, y, z, angle );

    			return this; // return 180 deg rotation

    		}

    		// as we have reached here there are no singularities so we can handle normally

    		let s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 ) +
    			( m13 - m31 ) * ( m13 - m31 ) +
    			( m21 - m12 ) * ( m21 - m12 ) ); // used to normalize

    		if ( Math.abs( s ) < 0.001 ) s = 1;

    		// prevent divide by zero, should not happen if matrix is orthogonal and should be
    		// caught by singularity test above, but I've left it in just in case

    		this.x = ( m32 - m23 ) / s;
    		this.y = ( m13 - m31 ) / s;
    		this.z = ( m21 - m12 ) / s;
    		this.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );

    		return this;

    	}

    	min( v ) {

    		this.x = Math.min( this.x, v.x );
    		this.y = Math.min( this.y, v.y );
    		this.z = Math.min( this.z, v.z );
    		this.w = Math.min( this.w, v.w );

    		return this;

    	}

    	max( v ) {

    		this.x = Math.max( this.x, v.x );
    		this.y = Math.max( this.y, v.y );
    		this.z = Math.max( this.z, v.z );
    		this.w = Math.max( this.w, v.w );

    		return this;

    	}

    	clamp( min, max ) {

    		// assumes min < max, componentwise

    		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
    		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
    		this.z = Math.max( min.z, Math.min( max.z, this.z ) );
    		this.w = Math.max( min.w, Math.min( max.w, this.w ) );

    		return this;

    	}

    	clampScalar( minVal, maxVal ) {

    		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
    		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
    		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );
    		this.w = Math.max( minVal, Math.min( maxVal, this.w ) );

    		return this;

    	}

    	clampLength( min, max ) {

    		const length = this.length();

    		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );

    	}

    	floor() {

    		this.x = Math.floor( this.x );
    		this.y = Math.floor( this.y );
    		this.z = Math.floor( this.z );
    		this.w = Math.floor( this.w );

    		return this;

    	}

    	ceil() {

    		this.x = Math.ceil( this.x );
    		this.y = Math.ceil( this.y );
    		this.z = Math.ceil( this.z );
    		this.w = Math.ceil( this.w );

    		return this;

    	}

    	round() {

    		this.x = Math.round( this.x );
    		this.y = Math.round( this.y );
    		this.z = Math.round( this.z );
    		this.w = Math.round( this.w );

    		return this;

    	}

    	roundToZero() {

    		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
    		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
    		this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
    		this.w = ( this.w < 0 ) ? Math.ceil( this.w ) : Math.floor( this.w );

    		return this;

    	}

    	negate() {

    		this.x = - this.x;
    		this.y = - this.y;
    		this.z = - this.z;
    		this.w = - this.w;

    		return this;

    	}

    	dot( v ) {

    		return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;

    	}

    	lengthSq() {

    		return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;

    	}

    	length() {

    		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );

    	}

    	manhattanLength() {

    		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );

    	}

    	normalize() {

    		return this.divideScalar( this.length() || 1 );

    	}

    	setLength( length ) {

    		return this.normalize().multiplyScalar( length );

    	}

    	lerp( v, alpha ) {

    		this.x += ( v.x - this.x ) * alpha;
    		this.y += ( v.y - this.y ) * alpha;
    		this.z += ( v.z - this.z ) * alpha;
    		this.w += ( v.w - this.w ) * alpha;

    		return this;

    	}

    	lerpVectors( v1, v2, alpha ) {

    		this.x = v1.x + ( v2.x - v1.x ) * alpha;
    		this.y = v1.y + ( v2.y - v1.y ) * alpha;
    		this.z = v1.z + ( v2.z - v1.z ) * alpha;
    		this.w = v1.w + ( v2.w - v1.w ) * alpha;

    		return this;

    	}

    	equals( v ) {

    		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );

    	}

    	fromArray( array, offset = 0 ) {

    		this.x = array[ offset ];
    		this.y = array[ offset + 1 ];
    		this.z = array[ offset + 2 ];
    		this.w = array[ offset + 3 ];

    		return this;

    	}

    	toArray( array = [], offset = 0 ) {

    		array[ offset ] = this.x;
    		array[ offset + 1 ] = this.y;
    		array[ offset + 2 ] = this.z;
    		array[ offset + 3 ] = this.w;

    		return array;

    	}

    	fromBufferAttribute( attribute, index ) {

    		this.x = attribute.getX( index );
    		this.y = attribute.getY( index );
    		this.z = attribute.getZ( index );
    		this.w = attribute.getW( index );

    		return this;

    	}

    	random() {

    		this.x = Math.random();
    		this.y = Math.random();
    		this.z = Math.random();
    		this.w = Math.random();

    		return this;

    	}

    	*[ Symbol.iterator ]() {

    		yield this.x;
    		yield this.y;
    		yield this.z;
    		yield this.w;

    	}

    }

    /*
     In options, we can specify:
     * Texture parameters for an auto-generated target texture
     * depthBuffer/stencilBuffer: Booleans to indicate if we should generate these buffers
    */
    class WebGLRenderTarget extends EventDispatcher {

    	constructor( width, height, options = {} ) {

    		super();

    		this.isWebGLRenderTarget = true;

    		this.width = width;
    		this.height = height;
    		this.depth = 1;

    		this.scissor = new Vector4( 0, 0, width, height );
    		this.scissorTest = false;

    		this.viewport = new Vector4( 0, 0, width, height );

    		const image = { width: width, height: height, depth: 1 };

    		this.texture = new Texture( image, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );
    		this.texture.isRenderTargetTexture = true;

    		this.texture.flipY = false;
    		this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
    		this.texture.internalFormat = options.internalFormat !== undefined ? options.internalFormat : null;
    		this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;

    		this.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;
    		this.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : false;

    		this.depthTexture = options.depthTexture !== undefined ? options.depthTexture : null;

    		this.samples = options.samples !== undefined ? options.samples : 0;

    	}

    	setSize( width, height, depth = 1 ) {

    		if ( this.width !== width || this.height !== height || this.depth !== depth ) {

    			this.width = width;
    			this.height = height;
    			this.depth = depth;

    			this.texture.image.width = width;
    			this.texture.image.height = height;
    			this.texture.image.depth = depth;

    			this.dispose();

    		}

    		this.viewport.set( 0, 0, width, height );
    		this.scissor.set( 0, 0, width, height );

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    	copy( source ) {

    		this.width = source.width;
    		this.height = source.height;
    		this.depth = source.depth;

    		this.viewport.copy( source.viewport );

    		this.texture = source.texture.clone();
    		this.texture.isRenderTargetTexture = true;

    		// ensure image object is not shared, see #20328

    		const image = Object.assign( {}, source.texture.image );
    		this.texture.source = new Source( image );

    		this.depthBuffer = source.depthBuffer;
    		this.stencilBuffer = source.stencilBuffer;

    		if ( source.depthTexture !== null ) this.depthTexture = source.depthTexture.clone();

    		this.samples = source.samples;

    		return this;

    	}

    	dispose() {

    		this.dispatchEvent( { type: 'dispose' } );

    	}

    }

    class DataArrayTexture extends Texture {

    	constructor( data = null, width = 1, height = 1, depth = 1 ) {

    		super( null );

    		this.isDataArrayTexture = true;

    		this.image = { data, width, height, depth };

    		this.magFilter = NearestFilter;
    		this.minFilter = NearestFilter;

    		this.wrapR = ClampToEdgeWrapping;

    		this.generateMipmaps = false;
    		this.flipY = false;
    		this.unpackAlignment = 1;

    	}

    }

    class WebGLArrayRenderTarget extends WebGLRenderTarget {

    	constructor( width, height, depth ) {

    		super( width, height );

    		this.isWebGLArrayRenderTarget = true;

    		this.depth = depth;

    		this.texture = new DataArrayTexture( null, width, height, depth );

    		this.texture.isRenderTargetTexture = true;

    	}

    }

    class Data3DTexture extends Texture {

    	constructor( data = null, width = 1, height = 1, depth = 1 ) {

    		// We're going to add .setXXX() methods for setting properties later.
    		// Users can still set in DataTexture3D directly.
    		//
    		//	const texture = new THREE.DataTexture3D( data, width, height, depth );
    		// 	texture.anisotropy = 16;
    		//
    		// See #14839

    		super( null );

    		this.isData3DTexture = true;

    		this.image = { data, width, height, depth };

    		this.magFilter = NearestFilter;
    		this.minFilter = NearestFilter;

    		this.wrapR = ClampToEdgeWrapping;

    		this.generateMipmaps = false;
    		this.flipY = false;
    		this.unpackAlignment = 1;

    	}

    }

    class WebGL3DRenderTarget extends WebGLRenderTarget {

    	constructor( width, height, depth ) {

    		super( width, height );

    		this.isWebGL3DRenderTarget = true;

    		this.depth = depth;

    		this.texture = new Data3DTexture( null, width, height, depth );

    		this.texture.isRenderTargetTexture = true;

    	}

    }

    class WebGLMultipleRenderTargets extends WebGLRenderTarget {

    	constructor( width, height, count, options = {} ) {

    		super( width, height, options );

    		this.isWebGLMultipleRenderTargets = true;

    		const texture = this.texture;

    		this.texture = [];

    		for ( let i = 0; i < count; i ++ ) {

    			this.texture[ i ] = texture.clone();
    			this.texture[ i ].isRenderTargetTexture = true;

    		}

    	}

    	setSize( width, height, depth = 1 ) {

    		if ( this.width !== width || this.height !== height || this.depth !== depth ) {

    			this.width = width;
    			this.height = height;
    			this.depth = depth;

    			for ( let i = 0, il = this.texture.length; i < il; i ++ ) {

    				this.texture[ i ].image.width = width;
    				this.texture[ i ].image.height = height;
    				this.texture[ i ].image.depth = depth;

    			}

    			this.dispose();

    		}

    		this.viewport.set( 0, 0, width, height );
    		this.scissor.set( 0, 0, width, height );

    		return this;

    	}

    	copy( source ) {

    		this.dispose();

    		this.width = source.width;
    		this.height = source.height;
    		this.depth = source.depth;

    		this.viewport.set( 0, 0, this.width, this.height );
    		this.scissor.set( 0, 0, this.width, this.height );

    		this.depthBuffer = source.depthBuffer;
    		this.stencilBuffer = source.stencilBuffer;

    		if ( source.depthTexture !== null ) this.depthTexture = source.depthTexture.clone();

    		this.texture.length = 0;

    		for ( let i = 0, il = source.texture.length; i < il; i ++ ) {

    			this.texture[ i ] = source.texture[ i ].clone();
    			this.texture[ i ].isRenderTargetTexture = true;

    		}

    		return this;

    	}

    }

    class Quaternion {

    	constructor( x = 0, y = 0, z = 0, w = 1 ) {

    		this.isQuaternion = true;

    		this._x = x;
    		this._y = y;
    		this._z = z;
    		this._w = w;

    	}

    	static slerpFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {

    		// fuzz-free, array-based Quaternion SLERP operation

    		let x0 = src0[ srcOffset0 + 0 ],
    			y0 = src0[ srcOffset0 + 1 ],
    			z0 = src0[ srcOffset0 + 2 ],
    			w0 = src0[ srcOffset0 + 3 ];

    		const x1 = src1[ srcOffset1 + 0 ],
    			y1 = src1[ srcOffset1 + 1 ],
    			z1 = src1[ srcOffset1 + 2 ],
    			w1 = src1[ srcOffset1 + 3 ];

    		if ( t === 0 ) {

    			dst[ dstOffset + 0 ] = x0;
    			dst[ dstOffset + 1 ] = y0;
    			dst[ dstOffset + 2 ] = z0;
    			dst[ dstOffset + 3 ] = w0;
    			return;

    		}

    		if ( t === 1 ) {

    			dst[ dstOffset + 0 ] = x1;
    			dst[ dstOffset + 1 ] = y1;
    			dst[ dstOffset + 2 ] = z1;
    			dst[ dstOffset + 3 ] = w1;
    			return;

    		}

    		if ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {

    			let s = 1 - t;
    			const cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,
    				dir = ( cos >= 0 ? 1 : - 1 ),
    				sqrSin = 1 - cos * cos;

    			// Skip the Slerp for tiny steps to avoid numeric problems:
    			if ( sqrSin > Number.EPSILON ) {

    				const sin = Math.sqrt( sqrSin ),
    					len = Math.atan2( sin, cos * dir );

    				s = Math.sin( s * len ) / sin;
    				t = Math.sin( t * len ) / sin;

    			}

    			const tDir = t * dir;

    			x0 = x0 * s + x1 * tDir;
    			y0 = y0 * s + y1 * tDir;
    			z0 = z0 * s + z1 * tDir;
    			w0 = w0 * s + w1 * tDir;

    			// Normalize in case we just did a lerp:
    			if ( s === 1 - t ) {

    				const f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );

    				x0 *= f;
    				y0 *= f;
    				z0 *= f;
    				w0 *= f;

    			}

    		}

    		dst[ dstOffset ] = x0;
    		dst[ dstOffset + 1 ] = y0;
    		dst[ dstOffset + 2 ] = z0;
    		dst[ dstOffset + 3 ] = w0;

    	}

    	static multiplyQuaternionsFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1 ) {

    		const x0 = src0[ srcOffset0 ];
    		const y0 = src0[ srcOffset0 + 1 ];
    		const z0 = src0[ srcOffset0 + 2 ];
    		const w0 = src0[ srcOffset0 + 3 ];

    		const x1 = src1[ srcOffset1 ];
    		const y1 = src1[ srcOffset1 + 1 ];
    		const z1 = src1[ srcOffset1 + 2 ];
    		const w1 = src1[ srcOffset1 + 3 ];

    		dst[ dstOffset ] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;
    		dst[ dstOffset + 1 ] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;
    		dst[ dstOffset + 2 ] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;
    		dst[ dstOffset + 3 ] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;

    		return dst;

    	}

    	get x() {

    		return this._x;

    	}

    	set x( value ) {

    		this._x = value;
    		this._onChangeCallback();

    	}

    	get y() {

    		return this._y;

    	}

    	set y( value ) {

    		this._y = value;
    		this._onChangeCallback();

    	}

    	get z() {

    		return this._z;

    	}

    	set z( value ) {

    		this._z = value;
    		this._onChangeCallback();

    	}

    	get w() {

    		return this._w;

    	}

    	set w( value ) {

    		this._w = value;
    		this._onChangeCallback();

    	}

    	set( x, y, z, w ) {

    		this._x = x;
    		this._y = y;
    		this._z = z;
    		this._w = w;

    		this._onChangeCallback();

    		return this;

    	}

    	clone() {

    		return new this.constructor( this._x, this._y, this._z, this._w );

    	}

    	copy( quaternion ) {

    		this._x = quaternion.x;
    		this._y = quaternion.y;
    		this._z = quaternion.z;
    		this._w = quaternion.w;

    		this._onChangeCallback();

    		return this;

    	}

    	setFromEuler( euler, update ) {

    		const x = euler._x, y = euler._y, z = euler._z, order = euler._order;

    		// http://www.mathworks.com/matlabcentral/fileexchange/
    		// 	20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/
    		//	content/SpinCalc.m

    		const cos = Math.cos;
    		const sin = Math.sin;

    		const c1 = cos( x / 2 );
    		const c2 = cos( y / 2 );
    		const c3 = cos( z / 2 );

    		const s1 = sin( x / 2 );
    		const s2 = sin( y / 2 );
    		const s3 = sin( z / 2 );

    		switch ( order ) {

    			case 'XYZ':
    				this._x = s1 * c2 * c3 + c1 * s2 * s3;
    				this._y = c1 * s2 * c3 - s1 * c2 * s3;
    				this._z = c1 * c2 * s3 + s1 * s2 * c3;
    				this._w = c1 * c2 * c3 - s1 * s2 * s3;
    				break;

    			case 'YXZ':
    				this._x = s1 * c2 * c3 + c1 * s2 * s3;
    				this._y = c1 * s2 * c3 - s1 * c2 * s3;
    				this._z = c1 * c2 * s3 - s1 * s2 * c3;
    				this._w = c1 * c2 * c3 + s1 * s2 * s3;
    				break;

    			case 'ZXY':
    				this._x = s1 * c2 * c3 - c1 * s2 * s3;
    				this._y = c1 * s2 * c3 + s1 * c2 * s3;
    				this._z = c1 * c2 * s3 + s1 * s2 * c3;
    				this._w = c1 * c2 * c3 - s1 * s2 * s3;
    				break;

    			case 'ZYX':
    				this._x = s1 * c2 * c3 - c1 * s2 * s3;
    				this._y = c1 * s2 * c3 + s1 * c2 * s3;
    				this._z = c1 * c2 * s3 - s1 * s2 * c3;
    				this._w = c1 * c2 * c3 + s1 * s2 * s3;
    				break;

    			case 'YZX':
    				this._x = s1 * c2 * c3 + c1 * s2 * s3;
    				this._y = c1 * s2 * c3 + s1 * c2 * s3;
    				this._z = c1 * c2 * s3 - s1 * s2 * c3;
    				this._w = c1 * c2 * c3 - s1 * s2 * s3;
    				break;

    			case 'XZY':
    				this._x = s1 * c2 * c3 - c1 * s2 * s3;
    				this._y = c1 * s2 * c3 - s1 * c2 * s3;
    				this._z = c1 * c2 * s3 + s1 * s2 * c3;
    				this._w = c1 * c2 * c3 + s1 * s2 * s3;
    				break;

    			default:
    				console.warn( 'THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order );

    		}

    		if ( update !== false ) this._onChangeCallback();

    		return this;

    	}

    	setFromAxisAngle( axis, angle ) {

    		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm

    		// assumes axis is normalized

    		const halfAngle = angle / 2, s = Math.sin( halfAngle );

    		this._x = axis.x * s;
    		this._y = axis.y * s;
    		this._z = axis.z * s;
    		this._w = Math.cos( halfAngle );

    		this._onChangeCallback();

    		return this;

    	}

    	setFromRotationMatrix( m ) {

    		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm

    		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

    		const te = m.elements,

    			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
    			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
    			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],

    			trace = m11 + m22 + m33;

    		if ( trace > 0 ) {

    			const s = 0.5 / Math.sqrt( trace + 1.0 );

    			this._w = 0.25 / s;
    			this._x = ( m32 - m23 ) * s;
    			this._y = ( m13 - m31 ) * s;
    			this._z = ( m21 - m12 ) * s;

    		} else if ( m11 > m22 && m11 > m33 ) {

    			const s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );

    			this._w = ( m32 - m23 ) / s;
    			this._x = 0.25 * s;
    			this._y = ( m12 + m21 ) / s;
    			this._z = ( m13 + m31 ) / s;

    		} else if ( m22 > m33 ) {

    			const s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );

    			this._w = ( m13 - m31 ) / s;
    			this._x = ( m12 + m21 ) / s;
    			this._y = 0.25 * s;
    			this._z = ( m23 + m32 ) / s;

    		} else {

    			const s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );

    			this._w = ( m21 - m12 ) / s;
    			this._x = ( m13 + m31 ) / s;
    			this._y = ( m23 + m32 ) / s;
    			this._z = 0.25 * s;

    		}

    		this._onChangeCallback();

    		return this;

    	}

    	setFromUnitVectors( vFrom, vTo ) {

    		// assumes direction vectors vFrom and vTo are normalized

    		let r = vFrom.dot( vTo ) + 1;

    		if ( r < Number.EPSILON ) {

    			// vFrom and vTo point in opposite directions

    			r = 0;

    			if ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {

    				this._x = - vFrom.y;
    				this._y = vFrom.x;
    				this._z = 0;
    				this._w = r;

    			} else {

    				this._x = 0;
    				this._y = - vFrom.z;
    				this._z = vFrom.y;
    				this._w = r;

    			}

    		} else {

    			// crossVectors( vFrom, vTo ); // inlined to avoid cyclic dependency on Vector3

    			this._x = vFrom.y * vTo.z - vFrom.z * vTo.y;
    			this._y = vFrom.z * vTo.x - vFrom.x * vTo.z;
    			this._z = vFrom.x * vTo.y - vFrom.y * vTo.x;
    			this._w = r;

    		}

    		return this.normalize();

    	}

    	angleTo( q ) {

    		return 2 * Math.acos( Math.abs( clamp( this.dot( q ), - 1, 1 ) ) );

    	}

    	rotateTowards( q, step ) {

    		const angle = this.angleTo( q );

    		if ( angle === 0 ) return this;

    		const t = Math.min( 1, step / angle );

    		this.slerp( q, t );

    		return this;

    	}

    	identity() {

    		return this.set( 0, 0, 0, 1 );

    	}

    	invert() {

    		// quaternion is assumed to have unit length

    		return this.conjugate();

    	}

    	conjugate() {

    		this._x *= - 1;
    		this._y *= - 1;
    		this._z *= - 1;

    		this._onChangeCallback();

    		return this;

    	}

    	dot( v ) {

    		return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;

    	}

    	lengthSq() {

    		return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;

    	}

    	length() {

    		return Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );

    	}

    	normalize() {

    		let l = this.length();

    		if ( l === 0 ) {

    			this._x = 0;
    			this._y = 0;
    			this._z = 0;
    			this._w = 1;

    		} else {

    			l = 1 / l;

    			this._x = this._x * l;
    			this._y = this._y * l;
    			this._z = this._z * l;
    			this._w = this._w * l;

    		}

    		this._onChangeCallback();

    		return this;

    	}

    	multiply( q ) {

    		return this.multiplyQuaternions( this, q );

    	}

    	premultiply( q ) {

    		return this.multiplyQuaternions( q, this );

    	}

    	multiplyQuaternions( a, b ) {

    		// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm

    		const qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;
    		const qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;

    		this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
    		this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
    		this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
    		this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;

    		this._onChangeCallback();

    		return this;

    	}

    	slerp( qb, t ) {

    		if ( t === 0 ) return this;
    		if ( t === 1 ) return this.copy( qb );

    		const x = this._x, y = this._y, z = this._z, w = this._w;

    		// http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/

    		let cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;

    		if ( cosHalfTheta < 0 ) {

    			this._w = - qb._w;
    			this._x = - qb._x;
    			this._y = - qb._y;
    			this._z = - qb._z;

    			cosHalfTheta = - cosHalfTheta;

    		} else {

    			this.copy( qb );

    		}

    		if ( cosHalfTheta >= 1.0 ) {

    			this._w = w;
    			this._x = x;
    			this._y = y;
    			this._z = z;

    			return this;

    		}

    		const sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;

    		if ( sqrSinHalfTheta <= Number.EPSILON ) {

    			const s = 1 - t;
    			this._w = s * w + t * this._w;
    			this._x = s * x + t * this._x;
    			this._y = s * y + t * this._y;
    			this._z = s * z + t * this._z;

    			this.normalize();
    			this._onChangeCallback();

    			return this;

    		}

    		const sinHalfTheta = Math.sqrt( sqrSinHalfTheta );
    		const halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );
    		const ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,
    			ratioB = Math.sin( t * halfTheta ) / sinHalfTheta;

    		this._w = ( w * ratioA + this._w * ratioB );
    		this._x = ( x * ratioA + this._x * ratioB );
    		this._y = ( y * ratioA + this._y * ratioB );
    		this._z = ( z * ratioA + this._z * ratioB );

    		this._onChangeCallback();

    		return this;

    	}

    	slerpQuaternions( qa, qb, t ) {

    		return this.copy( qa ).slerp( qb, t );

    	}

    	random() {

    		// Derived from http://planning.cs.uiuc.edu/node198.html
    		// Note, this source uses w, x, y, z ordering,
    		// so we swap the order below.

    		const u1 = Math.random();
    		const sqrt1u1 = Math.sqrt( 1 - u1 );
    		const sqrtu1 = Math.sqrt( u1 );

    		const u2 = 2 * Math.PI * Math.random();

    		const u3 = 2 * Math.PI * Math.random();

    		return this.set(
    			sqrt1u1 * Math.cos( u2 ),
    			sqrtu1 * Math.sin( u3 ),
    			sqrtu1 * Math.cos( u3 ),
    			sqrt1u1 * Math.sin( u2 ),
    		);

    	}

    	equals( quaternion ) {

    		return ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );

    	}

    	fromArray( array, offset = 0 ) {

    		this._x = array[ offset ];
    		this._y = array[ offset + 1 ];
    		this._z = array[ offset + 2 ];
    		this._w = array[ offset + 3 ];

    		this._onChangeCallback();

    		return this;

    	}

    	toArray( array = [], offset = 0 ) {

    		array[ offset ] = this._x;
    		array[ offset + 1 ] = this._y;
    		array[ offset + 2 ] = this._z;
    		array[ offset + 3 ] = this._w;

    		return array;

    	}

    	fromBufferAttribute( attribute, index ) {

    		this._x = attribute.getX( index );
    		this._y = attribute.getY( index );
    		this._z = attribute.getZ( index );
    		this._w = attribute.getW( index );

    		return this;

    	}

    	_onChange( callback ) {

    		this._onChangeCallback = callback;

    		return this;

    	}

    	_onChangeCallback() {}

    	*[ Symbol.iterator ]() {

    		yield this._x;
    		yield this._y;
    		yield this._z;
    		yield this._w;

    	}

    }

    class Vector3 {

    	constructor( x = 0, y = 0, z = 0 ) {

    		Vector3.prototype.isVector3 = true;

    		this.x = x;
    		this.y = y;
    		this.z = z;

    	}

    	set( x, y, z ) {

    		if ( z === undefined ) z = this.z; // sprite.scale.set(x,y)

    		this.x = x;
    		this.y = y;
    		this.z = z;

    		return this;

    	}

    	setScalar( scalar ) {

    		this.x = scalar;
    		this.y = scalar;
    		this.z = scalar;

    		return this;

    	}

    	setX( x ) {

    		this.x = x;

    		return this;

    	}

    	setY( y ) {

    		this.y = y;

    		return this;

    	}

    	setZ( z ) {

    		this.z = z;

    		return this;

    	}

    	setComponent( index, value ) {

    		switch ( index ) {

    			case 0: this.x = value; break;
    			case 1: this.y = value; break;
    			case 2: this.z = value; break;
    			default: throw new Error( 'index is out of range: ' + index );

    		}

    		return this;

    	}

    	getComponent( index ) {

    		switch ( index ) {

    			case 0: return this.x;
    			case 1: return this.y;
    			case 2: return this.z;
    			default: throw new Error( 'index is out of range: ' + index );

    		}

    	}

    	clone() {

    		return new this.constructor( this.x, this.y, this.z );

    	}

    	copy( v ) {

    		this.x = v.x;
    		this.y = v.y;
    		this.z = v.z;

    		return this;

    	}

    	add( v ) {

    		this.x += v.x;
    		this.y += v.y;
    		this.z += v.z;

    		return this;

    	}

    	addScalar( s ) {

    		this.x += s;
    		this.y += s;
    		this.z += s;

    		return this;

    	}

    	addVectors( a, b ) {

    		this.x = a.x + b.x;
    		this.y = a.y + b.y;
    		this.z = a.z + b.z;

    		return this;

    	}

    	addScaledVector( v, s ) {

    		this.x += v.x * s;
    		this.y += v.y * s;
    		this.z += v.z * s;

    		return this;

    	}

    	sub( v ) {

    		this.x -= v.x;
    		this.y -= v.y;
    		this.z -= v.z;

    		return this;

    	}

    	subScalar( s ) {

    		this.x -= s;
    		this.y -= s;
    		this.z -= s;

    		return this;

    	}

    	subVectors( a, b ) {

    		this.x = a.x - b.x;
    		this.y = a.y - b.y;
    		this.z = a.z - b.z;

    		return this;

    	}

    	multiply( v ) {

    		this.x *= v.x;
    		this.y *= v.y;
    		this.z *= v.z;

    		return this;

    	}

    	multiplyScalar( scalar ) {

    		this.x *= scalar;
    		this.y *= scalar;
    		this.z *= scalar;

    		return this;

    	}

    	multiplyVectors( a, b ) {

    		this.x = a.x * b.x;
    		this.y = a.y * b.y;
    		this.z = a.z * b.z;

    		return this;

    	}

    	applyEuler( euler ) {

    		return this.applyQuaternion( _quaternion$4.setFromEuler( euler ) );

    	}

    	applyAxisAngle( axis, angle ) {

    		return this.applyQuaternion( _quaternion$4.setFromAxisAngle( axis, angle ) );

    	}

    	applyMatrix3( m ) {

    		const x = this.x, y = this.y, z = this.z;
    		const e = m.elements;

    		this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;
    		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;
    		this.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;

    		return this;

    	}

    	applyNormalMatrix( m ) {

    		return this.applyMatrix3( m ).normalize();

    	}

    	applyMatrix4( m ) {

    		const x = this.x, y = this.y, z = this.z;
    		const e = m.elements;

    		const w = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] );

    		this.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] ) * w;
    		this.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] ) * w;
    		this.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * w;

    		return this;

    	}

    	applyQuaternion( q ) {

    		const x = this.x, y = this.y, z = this.z;
    		const qx = q.x, qy = q.y, qz = q.z, qw = q.w;

    		// calculate quat * vector

    		const ix = qw * x + qy * z - qz * y;
    		const iy = qw * y + qz * x - qx * z;
    		const iz = qw * z + qx * y - qy * x;
    		const iw = - qx * x - qy * y - qz * z;

    		// calculate result * inverse quat

    		this.x = ix * qw + iw * - qx + iy * - qz - iz * - qy;
    		this.y = iy * qw + iw * - qy + iz * - qx - ix * - qz;
    		this.z = iz * qw + iw * - qz + ix * - qy - iy * - qx;

    		return this;

    	}

    	project( camera ) {

    		return this.applyMatrix4( camera.matrixWorldInverse ).applyMatrix4( camera.projectionMatrix );

    	}

    	unproject( camera ) {

    		return this.applyMatrix4( camera.projectionMatrixInverse ).applyMatrix4( camera.matrixWorld );

    	}

    	transformDirection( m ) {

    		// input: THREE.Matrix4 affine matrix
    		// vector interpreted as a direction

    		const x = this.x, y = this.y, z = this.z;
    		const e = m.elements;

    		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z;
    		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z;
    		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;

    		return this.normalize();

    	}

    	divide( v ) {

    		this.x /= v.x;
    		this.y /= v.y;
    		this.z /= v.z;

    		return this;

    	}

    	divideScalar( scalar ) {

    		return this.multiplyScalar( 1 / scalar );

    	}

    	min( v ) {

    		this.x = Math.min( this.x, v.x );
    		this.y = Math.min( this.y, v.y );
    		this.z = Math.min( this.z, v.z );

    		return this;

    	}

    	max( v ) {

    		this.x = Math.max( this.x, v.x );
    		this.y = Math.max( this.y, v.y );
    		this.z = Math.max( this.z, v.z );

    		return this;

    	}

    	clamp( min, max ) {

    		// assumes min < max, componentwise

    		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
    		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
    		this.z = Math.max( min.z, Math.min( max.z, this.z ) );

    		return this;

    	}

    	clampScalar( minVal, maxVal ) {

    		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
    		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
    		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );

    		return this;

    	}

    	clampLength( min, max ) {

    		const length = this.length();

    		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );

    	}

    	floor() {

    		this.x = Math.floor( this.x );
    		this.y = Math.floor( this.y );
    		this.z = Math.floor( this.z );

    		return this;

    	}

    	ceil() {

    		this.x = Math.ceil( this.x );
    		this.y = Math.ceil( this.y );
    		this.z = Math.ceil( this.z );

    		return this;

    	}

    	round() {

    		this.x = Math.round( this.x );
    		this.y = Math.round( this.y );
    		this.z = Math.round( this.z );

    		return this;

    	}

    	roundToZero() {

    		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
    		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
    		this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );

    		return this;

    	}

    	negate() {

    		this.x = - this.x;
    		this.y = - this.y;
    		this.z = - this.z;

    		return this;

    	}

    	dot( v ) {

    		return this.x * v.x + this.y * v.y + this.z * v.z;

    	}

    	// TODO lengthSquared?

    	lengthSq() {

    		return this.x * this.x + this.y * this.y + this.z * this.z;

    	}

    	length() {

    		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );

    	}

    	manhattanLength() {

    		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );

    	}

    	normalize() {

    		return this.divideScalar( this.length() || 1 );

    	}

    	setLength( length ) {

    		return this.normalize().multiplyScalar( length );

    	}

    	lerp( v, alpha ) {

    		this.x += ( v.x - this.x ) * alpha;
    		this.y += ( v.y - this.y ) * alpha;
    		this.z += ( v.z - this.z ) * alpha;

    		return this;

    	}

    	lerpVectors( v1, v2, alpha ) {

    		this.x = v1.x + ( v2.x - v1.x ) * alpha;
    		this.y = v1.y + ( v2.y - v1.y ) * alpha;
    		this.z = v1.z + ( v2.z - v1.z ) * alpha;

    		return this;

    	}

    	cross( v ) {

    		return this.crossVectors( this, v );

    	}

    	crossVectors( a, b ) {

    		const ax = a.x, ay = a.y, az = a.z;
    		const bx = b.x, by = b.y, bz = b.z;

    		this.x = ay * bz - az * by;
    		this.y = az * bx - ax * bz;
    		this.z = ax * by - ay * bx;

    		return this;

    	}

    	projectOnVector( v ) {

    		const denominator = v.lengthSq();

    		if ( denominator === 0 ) return this.set( 0, 0, 0 );

    		const scalar = v.dot( this ) / denominator;

    		return this.copy( v ).multiplyScalar( scalar );

    	}

    	projectOnPlane( planeNormal ) {

    		_vector$c.copy( this ).projectOnVector( planeNormal );

    		return this.sub( _vector$c );

    	}

    	reflect( normal ) {

    		// reflect incident vector off plane orthogonal to normal
    		// normal is assumed to have unit length

    		return this.sub( _vector$c.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );

    	}

    	angleTo( v ) {

    		const denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );

    		if ( denominator === 0 ) return Math.PI / 2;

    		const theta = this.dot( v ) / denominator;

    		// clamp, to handle numerical problems

    		return Math.acos( clamp( theta, - 1, 1 ) );

    	}

    	distanceTo( v ) {

    		return Math.sqrt( this.distanceToSquared( v ) );

    	}

    	distanceToSquared( v ) {

    		const dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;

    		return dx * dx + dy * dy + dz * dz;

    	}

    	manhattanDistanceTo( v ) {

    		return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ) + Math.abs( this.z - v.z );

    	}

    	setFromSpherical( s ) {

    		return this.setFromSphericalCoords( s.radius, s.phi, s.theta );

    	}

    	setFromSphericalCoords( radius, phi, theta ) {

    		const sinPhiRadius = Math.sin( phi ) * radius;

    		this.x = sinPhiRadius * Math.sin( theta );
    		this.y = Math.cos( phi ) * radius;
    		this.z = sinPhiRadius * Math.cos( theta );

    		return this;

    	}

    	setFromCylindrical( c ) {

    		return this.setFromCylindricalCoords( c.radius, c.theta, c.y );

    	}

    	setFromCylindricalCoords( radius, theta, y ) {

    		this.x = radius * Math.sin( theta );
    		this.y = y;
    		this.z = radius * Math.cos( theta );

    		return this;

    	}

    	setFromMatrixPosition( m ) {

    		const e = m.elements;

    		this.x = e[ 12 ];
    		this.y = e[ 13 ];
    		this.z = e[ 14 ];

    		return this;

    	}

    	setFromMatrixScale( m ) {

    		const sx = this.setFromMatrixColumn( m, 0 ).length();
    		const sy = this.setFromMatrixColumn( m, 1 ).length();
    		const sz = this.setFromMatrixColumn( m, 2 ).length();

    		this.x = sx;
    		this.y = sy;
    		this.z = sz;

    		return this;

    	}

    	setFromMatrixColumn( m, index ) {

    		return this.fromArray( m.elements, index * 4 );

    	}

    	setFromMatrix3Column( m, index ) {

    		return this.fromArray( m.elements, index * 3 );

    	}

    	setFromEuler( e ) {

    		this.x = e._x;
    		this.y = e._y;
    		this.z = e._z;

    		return this;

    	}

    	equals( v ) {

    		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );

    	}

    	fromArray( array, offset = 0 ) {

    		this.x = array[ offset ];
    		this.y = array[ offset + 1 ];
    		this.z = array[ offset + 2 ];

    		return this;

    	}

    	toArray( array = [], offset = 0 ) {

    		array[ offset ] = this.x;
    		array[ offset + 1 ] = this.y;
    		array[ offset + 2 ] = this.z;

    		return array;

    	}

    	fromBufferAttribute( attribute, index ) {

    		this.x = attribute.getX( index );
    		this.y = attribute.getY( index );
    		this.z = attribute.getZ( index );

    		return this;

    	}

    	random() {

    		this.x = Math.random();
    		this.y = Math.random();
    		this.z = Math.random();

    		return this;

    	}

    	randomDirection() {

    		// Derived from https://mathworld.wolfram.com/SpherePointPicking.html

    		const u = ( Math.random() - 0.5 ) * 2;
    		const t = Math.random() * Math.PI * 2;
    		const f = Math.sqrt( 1 - u ** 2 );

    		this.x = f * Math.cos( t );
    		this.y = f * Math.sin( t );
    		this.z = u;

    		return this;

    	}

    	*[ Symbol.iterator ]() {

    		yield this.x;
    		yield this.y;
    		yield this.z;

    	}

    }

    const _vector$c = /*@__PURE__*/ new Vector3();
    const _quaternion$4 = /*@__PURE__*/ new Quaternion();

    class Box3 {

    	constructor( min = new Vector3( + Infinity, + Infinity, + Infinity ), max = new Vector3( - Infinity, - Infinity, - Infinity ) ) {

    		this.isBox3 = true;

    		this.min = min;
    		this.max = max;

    	}

    	set( min, max ) {

    		this.min.copy( min );
    		this.max.copy( max );

    		return this;

    	}

    	setFromArray( array ) {

    		let minX = + Infinity;
    		let minY = + Infinity;
    		let minZ = + Infinity;

    		let maxX = - Infinity;
    		let maxY = - Infinity;
    		let maxZ = - Infinity;

    		for ( let i = 0, l = array.length; i < l; i += 3 ) {

    			const x = array[ i ];
    			const y = array[ i + 1 ];
    			const z = array[ i + 2 ];

    			if ( x < minX ) minX = x;
    			if ( y < minY ) minY = y;
    			if ( z < minZ ) minZ = z;

    			if ( x > maxX ) maxX = x;
    			if ( y > maxY ) maxY = y;
    			if ( z > maxZ ) maxZ = z;

    		}

    		this.min.set( minX, minY, minZ );
    		this.max.set( maxX, maxY, maxZ );

    		return this;

    	}

    	setFromBufferAttribute( attribute ) {

    		let minX = + Infinity;
    		let minY = + Infinity;
    		let minZ = + Infinity;

    		let maxX = - Infinity;
    		let maxY = - Infinity;
    		let maxZ = - Infinity;

    		for ( let i = 0, l = attribute.count; i < l; i ++ ) {

    			const x = attribute.getX( i );
    			const y = attribute.getY( i );
    			const z = attribute.getZ( i );

    			if ( x < minX ) minX = x;
    			if ( y < minY ) minY = y;
    			if ( z < minZ ) minZ = z;

    			if ( x > maxX ) maxX = x;
    			if ( y > maxY ) maxY = y;
    			if ( z > maxZ ) maxZ = z;

    		}

    		this.min.set( minX, minY, minZ );
    		this.max.set( maxX, maxY, maxZ );

    		return this;

    	}

    	setFromPoints( points ) {

    		this.makeEmpty();

    		for ( let i = 0, il = points.length; i < il; i ++ ) {

    			this.expandByPoint( points[ i ] );

    		}

    		return this;

    	}

    	setFromCenterAndSize( center, size ) {

    		const halfSize = _vector$b.copy( size ).multiplyScalar( 0.5 );

    		this.min.copy( center ).sub( halfSize );
    		this.max.copy( center ).add( halfSize );

    		return this;

    	}

    	setFromObject( object, precise = false ) {

    		this.makeEmpty();

    		return this.expandByObject( object, precise );

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    	copy( box ) {

    		this.min.copy( box.min );
    		this.max.copy( box.max );

    		return this;

    	}

    	makeEmpty() {

    		this.min.x = this.min.y = this.min.z = + Infinity;
    		this.max.x = this.max.y = this.max.z = - Infinity;

    		return this;

    	}

    	isEmpty() {

    		// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes

    		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );

    	}

    	getCenter( target ) {

    		return this.isEmpty() ? target.set( 0, 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );

    	}

    	getSize( target ) {

    		return this.isEmpty() ? target.set( 0, 0, 0 ) : target.subVectors( this.max, this.min );

    	}

    	expandByPoint( point ) {

    		this.min.min( point );
    		this.max.max( point );

    		return this;

    	}

    	expandByVector( vector ) {

    		this.min.sub( vector );
    		this.max.add( vector );

    		return this;

    	}

    	expandByScalar( scalar ) {

    		this.min.addScalar( - scalar );
    		this.max.addScalar( scalar );

    		return this;

    	}

    	expandByObject( object, precise = false ) {

    		// Computes the world-axis-aligned bounding box of an object (including its children),
    		// accounting for both the object's, and children's, world transforms

    		object.updateWorldMatrix( false, false );

    		const geometry = object.geometry;

    		if ( geometry !== undefined ) {

    			if ( precise && geometry.attributes != undefined && geometry.attributes.position !== undefined ) {

    				const position = geometry.attributes.position;
    				for ( let i = 0, l = position.count; i < l; i ++ ) {

    					_vector$b.fromBufferAttribute( position, i ).applyMatrix4( object.matrixWorld );
    					this.expandByPoint( _vector$b );

    				}

    			} else {

    				if ( geometry.boundingBox === null ) {

    					geometry.computeBoundingBox();

    				}

    				_box$3.copy( geometry.boundingBox );
    				_box$3.applyMatrix4( object.matrixWorld );

    				this.union( _box$3 );

    			}

    		}

    		const children = object.children;

    		for ( let i = 0, l = children.length; i < l; i ++ ) {

    			this.expandByObject( children[ i ], precise );

    		}

    		return this;

    	}

    	containsPoint( point ) {

    		return point.x < this.min.x || point.x > this.max.x ||
    			point.y < this.min.y || point.y > this.max.y ||
    			point.z < this.min.z || point.z > this.max.z ? false : true;

    	}

    	containsBox( box ) {

    		return this.min.x <= box.min.x && box.max.x <= this.max.x &&
    			this.min.y <= box.min.y && box.max.y <= this.max.y &&
    			this.min.z <= box.min.z && box.max.z <= this.max.z;

    	}

    	getParameter( point, target ) {

    		// This can potentially have a divide by zero if the box
    		// has a size dimension of 0.

    		return target.set(
    			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
    			( point.y - this.min.y ) / ( this.max.y - this.min.y ),
    			( point.z - this.min.z ) / ( this.max.z - this.min.z )
    		);

    	}

    	intersectsBox( box ) {

    		// using 6 splitting planes to rule out intersections.
    		return box.max.x < this.min.x || box.min.x > this.max.x ||
    			box.max.y < this.min.y || box.min.y > this.max.y ||
    			box.max.z < this.min.z || box.min.z > this.max.z ? false : true;

    	}

    	intersectsSphere( sphere ) {

    		// Find the point on the AABB closest to the sphere center.
    		this.clampPoint( sphere.center, _vector$b );

    		// If that point is inside the sphere, the AABB and sphere intersect.
    		return _vector$b.distanceToSquared( sphere.center ) <= ( sphere.radius * sphere.radius );

    	}

    	intersectsPlane( plane ) {

    		// We compute the minimum and maximum dot product values. If those values
    		// are on the same side (back or front) of the plane, then there is no intersection.

    		let min, max;

    		if ( plane.normal.x > 0 ) {

    			min = plane.normal.x * this.min.x;
    			max = plane.normal.x * this.max.x;

    		} else {

    			min = plane.normal.x * this.max.x;
    			max = plane.normal.x * this.min.x;

    		}

    		if ( plane.normal.y > 0 ) {

    			min += plane.normal.y * this.min.y;
    			max += plane.normal.y * this.max.y;

    		} else {

    			min += plane.normal.y * this.max.y;
    			max += plane.normal.y * this.min.y;

    		}

    		if ( plane.normal.z > 0 ) {

    			min += plane.normal.z * this.min.z;
    			max += plane.normal.z * this.max.z;

    		} else {

    			min += plane.normal.z * this.max.z;
    			max += plane.normal.z * this.min.z;

    		}

    		return ( min <= - plane.constant && max >= - plane.constant );

    	}

    	intersectsTriangle( triangle ) {

    		if ( this.isEmpty() ) {

    			return false;

    		}

    		// compute box center and extents
    		this.getCenter( _center );
    		_extents.subVectors( this.max, _center );

    		// translate triangle to aabb origin
    		_v0$2.subVectors( triangle.a, _center );
    		_v1$7.subVectors( triangle.b, _center );
    		_v2$3.subVectors( triangle.c, _center );

    		// compute edge vectors for triangle
    		_f0.subVectors( _v1$7, _v0$2 );
    		_f1.subVectors( _v2$3, _v1$7 );
    		_f2.subVectors( _v0$2, _v2$3 );

    		// test against axes that are given by cross product combinations of the edges of the triangle and the edges of the aabb
    		// make an axis testing of each of the 3 sides of the aabb against each of the 3 sides of the triangle = 9 axis of separation
    		// axis_ij = u_i x f_j (u0, u1, u2 = face normals of aabb = x,y,z axes vectors since aabb is axis aligned)
    		let axes = [
    			0, - _f0.z, _f0.y, 0, - _f1.z, _f1.y, 0, - _f2.z, _f2.y,
    			_f0.z, 0, - _f0.x, _f1.z, 0, - _f1.x, _f2.z, 0, - _f2.x,
    			- _f0.y, _f0.x, 0, - _f1.y, _f1.x, 0, - _f2.y, _f2.x, 0
    		];
    		if ( ! satForAxes( axes, _v0$2, _v1$7, _v2$3, _extents ) ) {

    			return false;

    		}

    		// test 3 face normals from the aabb
    		axes = [ 1, 0, 0, 0, 1, 0, 0, 0, 1 ];
    		if ( ! satForAxes( axes, _v0$2, _v1$7, _v2$3, _extents ) ) {

    			return false;

    		}

    		// finally testing the face normal of the triangle
    		// use already existing triangle edge vectors here
    		_triangleNormal.crossVectors( _f0, _f1 );
    		axes = [ _triangleNormal.x, _triangleNormal.y, _triangleNormal.z ];

    		return satForAxes( axes, _v0$2, _v1$7, _v2$3, _extents );

    	}

    	clampPoint( point, target ) {

    		return target.copy( point ).clamp( this.min, this.max );

    	}

    	distanceToPoint( point ) {

    		const clampedPoint = _vector$b.copy( point ).clamp( this.min, this.max );

    		return clampedPoint.sub( point ).length();

    	}

    	getBoundingSphere( target ) {

    		this.getCenter( target.center );

    		target.radius = this.getSize( _vector$b ).length() * 0.5;

    		return target;

    	}

    	intersect( box ) {

    		this.min.max( box.min );
    		this.max.min( box.max );

    		// ensure that if there is no overlap, the result is fully empty, not slightly empty with non-inf/+inf values that will cause subsequence intersects to erroneously return valid values.
    		if ( this.isEmpty() ) this.makeEmpty();

    		return this;

    	}

    	union( box ) {

    		this.min.min( box.min );
    		this.max.max( box.max );

    		return this;

    	}

    	applyMatrix4( matrix ) {

    		// transform of empty box is an empty box.
    		if ( this.isEmpty() ) return this;

    		// NOTE: I am using a binary pattern to specify all 2^3 combinations below
    		_points[ 0 ].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 000
    		_points[ 1 ].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 001
    		_points[ 2 ].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 010
    		_points[ 3 ].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 011
    		_points[ 4 ].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 100
    		_points[ 5 ].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 101
    		_points[ 6 ].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 110
    		_points[ 7 ].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 111

    		this.setFromPoints( _points );

    		return this;

    	}

    	translate( offset ) {

    		this.min.add( offset );
    		this.max.add( offset );

    		return this;

    	}

    	equals( box ) {

    		return box.min.equals( this.min ) && box.max.equals( this.max );

    	}

    }

    const _points = [
    	/*@__PURE__*/ new Vector3(),
    	/*@__PURE__*/ new Vector3(),
    	/*@__PURE__*/ new Vector3(),
    	/*@__PURE__*/ new Vector3(),
    	/*@__PURE__*/ new Vector3(),
    	/*@__PURE__*/ new Vector3(),
    	/*@__PURE__*/ new Vector3(),
    	/*@__PURE__*/ new Vector3()
    ];

    const _vector$b = /*@__PURE__*/ new Vector3();

    const _box$3 = /*@__PURE__*/ new Box3();

    // triangle centered vertices

    const _v0$2 = /*@__PURE__*/ new Vector3();
    const _v1$7 = /*@__PURE__*/ new Vector3();
    const _v2$3 = /*@__PURE__*/ new Vector3();

    // triangle edge vectors

    const _f0 = /*@__PURE__*/ new Vector3();
    const _f1 = /*@__PURE__*/ new Vector3();
    const _f2 = /*@__PURE__*/ new Vector3();

    const _center = /*@__PURE__*/ new Vector3();
    const _extents = /*@__PURE__*/ new Vector3();
    const _triangleNormal = /*@__PURE__*/ new Vector3();
    const _testAxis = /*@__PURE__*/ new Vector3();

    function satForAxes( axes, v0, v1, v2, extents ) {

    	for ( let i = 0, j = axes.length - 3; i <= j; i += 3 ) {

    		_testAxis.fromArray( axes, i );
    		// project the aabb onto the separating axis
    		const r = extents.x * Math.abs( _testAxis.x ) + extents.y * Math.abs( _testAxis.y ) + extents.z * Math.abs( _testAxis.z );
    		// project all 3 vertices of the triangle onto the separating axis
    		const p0 = v0.dot( _testAxis );
    		const p1 = v1.dot( _testAxis );
    		const p2 = v2.dot( _testAxis );
    		// actual test, basically see if either of the most extreme of the triangle points intersects r
    		if ( Math.max( - Math.max( p0, p1, p2 ), Math.min( p0, p1, p2 ) ) > r ) {

    			// points of the projected triangle are outside the projected half-length of the aabb
    			// the axis is separating and we can exit
    			return false;

    		}

    	}

    	return true;

    }

    const _box$2 = /*@__PURE__*/ new Box3();
    const _v1$6 = /*@__PURE__*/ new Vector3();
    const _toFarthestPoint = /*@__PURE__*/ new Vector3();
    const _toPoint = /*@__PURE__*/ new Vector3();

    class Sphere {

    	constructor( center = new Vector3(), radius = - 1 ) {

    		this.center = center;
    		this.radius = radius;

    	}

    	set( center, radius ) {

    		this.center.copy( center );
    		this.radius = radius;

    		return this;

    	}

    	setFromPoints( points, optionalCenter ) {

    		const center = this.center;

    		if ( optionalCenter !== undefined ) {

    			center.copy( optionalCenter );

    		} else {

    			_box$2.setFromPoints( points ).getCenter( center );

    		}

    		let maxRadiusSq = 0;

    		for ( let i = 0, il = points.length; i < il; i ++ ) {

    			maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );

    		}

    		this.radius = Math.sqrt( maxRadiusSq );

    		return this;

    	}

    	copy( sphere ) {

    		this.center.copy( sphere.center );
    		this.radius = sphere.radius;

    		return this;

    	}

    	isEmpty() {

    		return ( this.radius < 0 );

    	}

    	makeEmpty() {

    		this.center.set( 0, 0, 0 );
    		this.radius = - 1;

    		return this;

    	}

    	containsPoint( point ) {

    		return ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );

    	}

    	distanceToPoint( point ) {

    		return ( point.distanceTo( this.center ) - this.radius );

    	}

    	intersectsSphere( sphere ) {

    		const radiusSum = this.radius + sphere.radius;

    		return sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );

    	}

    	intersectsBox( box ) {

    		return box.intersectsSphere( this );

    	}

    	intersectsPlane( plane ) {

    		return Math.abs( plane.distanceToPoint( this.center ) ) <= this.radius;

    	}

    	clampPoint( point, target ) {

    		const deltaLengthSq = this.center.distanceToSquared( point );

    		target.copy( point );

    		if ( deltaLengthSq > ( this.radius * this.radius ) ) {

    			target.sub( this.center ).normalize();
    			target.multiplyScalar( this.radius ).add( this.center );

    		}

    		return target;

    	}

    	getBoundingBox( target ) {

    		if ( this.isEmpty() ) {

    			// Empty sphere produces empty bounding box
    			target.makeEmpty();
    			return target;

    		}

    		target.set( this.center, this.center );
    		target.expandByScalar( this.radius );

    		return target;

    	}

    	applyMatrix4( matrix ) {

    		this.center.applyMatrix4( matrix );
    		this.radius = this.radius * matrix.getMaxScaleOnAxis();

    		return this;

    	}

    	translate( offset ) {

    		this.center.add( offset );

    		return this;

    	}

    	expandByPoint( point ) {

    		if ( this.isEmpty() ) {

    			this.center.copy( point );
    			this.radius = 0;

    			return this;

    		}

    		// from https://github.com/juj/MathGeoLib/blob/2940b99b99cfe575dd45103ef20f4019dee15b54/src/Geometry/Sphere.cpp#L649-L671

    		_toPoint.subVectors( point, this.center );

    		const lengthSq = _toPoint.lengthSq();

    		if ( lengthSq > ( this.radius * this.radius ) ) {

    			const length = Math.sqrt( lengthSq );
    			const missingRadiusHalf = ( length - this.radius ) * 0.5;

    			// Nudge this sphere towards the target point. Add half the missing distance to radius,
    			// and the other half to position. This gives a tighter enclosure, instead of if
    			// the whole missing distance were just added to radius.

    			this.center.add( _toPoint.multiplyScalar( missingRadiusHalf / length ) );
    			this.radius += missingRadiusHalf;

    		}

    		return this;

    	}

    	union( sphere ) {

    		// handle empty sphere cases
    		if ( sphere.isEmpty() ) {

    			return this;

    		} else if ( this.isEmpty() ) {

    			this.copy( sphere );

    			return this;

    		}

    		// from https://github.com/juj/MathGeoLib/blob/2940b99b99cfe575dd45103ef20f4019dee15b54/src/Geometry/Sphere.cpp#L759-L769

    		// To enclose another sphere into this sphere, we only need to enclose two points:
    		// 1) Enclose the farthest point on the other sphere into this sphere.
    		// 2) Enclose the opposite point of the farthest point into this sphere.

    		 if ( this.center.equals( sphere.center ) === true ) {

    			 _toFarthestPoint.set( 0, 0, 1 ).multiplyScalar( sphere.radius );


    		} else {

    			_toFarthestPoint.subVectors( sphere.center, this.center ).normalize().multiplyScalar( sphere.radius );

    		}

    		this.expandByPoint( _v1$6.copy( sphere.center ).add( _toFarthestPoint ) );
    		this.expandByPoint( _v1$6.copy( sphere.center ).sub( _toFarthestPoint ) );

    		return this;

    	}

    	equals( sphere ) {

    		return sphere.center.equals( this.center ) && ( sphere.radius === this.radius );

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    }

    const _vector$a = /*@__PURE__*/ new Vector3();
    const _segCenter = /*@__PURE__*/ new Vector3();
    const _segDir = /*@__PURE__*/ new Vector3();
    const _diff = /*@__PURE__*/ new Vector3();

    const _edge1 = /*@__PURE__*/ new Vector3();
    const _edge2 = /*@__PURE__*/ new Vector3();
    const _normal$1 = /*@__PURE__*/ new Vector3();

    class Ray {

    	constructor( origin = new Vector3(), direction = new Vector3( 0, 0, - 1 ) ) {

    		this.origin = origin;
    		this.direction = direction;

    	}

    	set( origin, direction ) {

    		this.origin.copy( origin );
    		this.direction.copy( direction );

    		return this;

    	}

    	copy( ray ) {

    		this.origin.copy( ray.origin );
    		this.direction.copy( ray.direction );

    		return this;

    	}

    	at( t, target ) {

    		return target.copy( this.direction ).multiplyScalar( t ).add( this.origin );

    	}

    	lookAt( v ) {

    		this.direction.copy( v ).sub( this.origin ).normalize();

    		return this;

    	}

    	recast( t ) {

    		this.origin.copy( this.at( t, _vector$a ) );

    		return this;

    	}

    	closestPointToPoint( point, target ) {

    		target.subVectors( point, this.origin );

    		const directionDistance = target.dot( this.direction );

    		if ( directionDistance < 0 ) {

    			return target.copy( this.origin );

    		}

    		return target.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );

    	}

    	distanceToPoint( point ) {

    		return Math.sqrt( this.distanceSqToPoint( point ) );

    	}

    	distanceSqToPoint( point ) {

    		const directionDistance = _vector$a.subVectors( point, this.origin ).dot( this.direction );

    		// point behind the ray

    		if ( directionDistance < 0 ) {

    			return this.origin.distanceToSquared( point );

    		}

    		_vector$a.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );

    		return _vector$a.distanceToSquared( point );

    	}

    	distanceSqToSegment( v0, v1, optionalPointOnRay, optionalPointOnSegment ) {

    		// from https://github.com/pmjoniak/GeometricTools/blob/master/GTEngine/Include/Mathematics/GteDistRaySegment.h
    		// It returns the min distance between the ray and the segment
    		// defined by v0 and v1
    		// It can also set two optional targets :
    		// - The closest point on the ray
    		// - The closest point on the segment

    		_segCenter.copy( v0 ).add( v1 ).multiplyScalar( 0.5 );
    		_segDir.copy( v1 ).sub( v0 ).normalize();
    		_diff.copy( this.origin ).sub( _segCenter );

    		const segExtent = v0.distanceTo( v1 ) * 0.5;
    		const a01 = - this.direction.dot( _segDir );
    		const b0 = _diff.dot( this.direction );
    		const b1 = - _diff.dot( _segDir );
    		const c = _diff.lengthSq();
    		const det = Math.abs( 1 - a01 * a01 );
    		let s0, s1, sqrDist, extDet;

    		if ( det > 0 ) {

    			// The ray and segment are not parallel.

    			s0 = a01 * b1 - b0;
    			s1 = a01 * b0 - b1;
    			extDet = segExtent * det;

    			if ( s0 >= 0 ) {

    				if ( s1 >= - extDet ) {

    					if ( s1 <= extDet ) {

    						// region 0
    						// Minimum at interior points of ray and segment.

    						const invDet = 1 / det;
    						s0 *= invDet;
    						s1 *= invDet;
    						sqrDist = s0 * ( s0 + a01 * s1 + 2 * b0 ) + s1 * ( a01 * s0 + s1 + 2 * b1 ) + c;

    					} else {

    						// region 1

    						s1 = segExtent;
    						s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
    						sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

    					}

    				} else {

    					// region 5

    					s1 = - segExtent;
    					s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
    					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

    				}

    			} else {

    				if ( s1 <= - extDet ) {

    					// region 4

    					s0 = Math.max( 0, - ( - a01 * segExtent + b0 ) );
    					s1 = ( s0 > 0 ) ? - segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
    					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

    				} else if ( s1 <= extDet ) {

    					// region 3

    					s0 = 0;
    					s1 = Math.min( Math.max( - segExtent, - b1 ), segExtent );
    					sqrDist = s1 * ( s1 + 2 * b1 ) + c;

    				} else {

    					// region 2

    					s0 = Math.max( 0, - ( a01 * segExtent + b0 ) );
    					s1 = ( s0 > 0 ) ? segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
    					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

    				}

    			}

    		} else {

    			// Ray and segment are parallel.

    			s1 = ( a01 > 0 ) ? - segExtent : segExtent;
    			s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
    			sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

    		}

    		if ( optionalPointOnRay ) {

    			optionalPointOnRay.copy( this.direction ).multiplyScalar( s0 ).add( this.origin );

    		}

    		if ( optionalPointOnSegment ) {

    			optionalPointOnSegment.copy( _segDir ).multiplyScalar( s1 ).add( _segCenter );

    		}

    		return sqrDist;

    	}

    	intersectSphere( sphere, target ) {

    		_vector$a.subVectors( sphere.center, this.origin );
    		const tca = _vector$a.dot( this.direction );
    		const d2 = _vector$a.dot( _vector$a ) - tca * tca;
    		const radius2 = sphere.radius * sphere.radius;

    		if ( d2 > radius2 ) return null;

    		const thc = Math.sqrt( radius2 - d2 );

    		// t0 = first intersect point - entrance on front of sphere
    		const t0 = tca - thc;

    		// t1 = second intersect point - exit point on back of sphere
    		const t1 = tca + thc;

    		// test to see if both t0 and t1 are behind the ray - if so, return null
    		if ( t0 < 0 && t1 < 0 ) return null;

    		// test to see if t0 is behind the ray:
    		// if it is, the ray is inside the sphere, so return the second exit point scaled by t1,
    		// in order to always return an intersect point that is in front of the ray.
    		if ( t0 < 0 ) return this.at( t1, target );

    		// else t0 is in front of the ray, so return the first collision point scaled by t0
    		return this.at( t0, target );

    	}

    	intersectsSphere( sphere ) {

    		return this.distanceSqToPoint( sphere.center ) <= ( sphere.radius * sphere.radius );

    	}

    	distanceToPlane( plane ) {

    		const denominator = plane.normal.dot( this.direction );

    		if ( denominator === 0 ) {

    			// line is coplanar, return origin
    			if ( plane.distanceToPoint( this.origin ) === 0 ) {

    				return 0;

    			}

    			// Null is preferable to undefined since undefined means.... it is undefined

    			return null;

    		}

    		const t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;

    		// Return if the ray never intersects the plane

    		return t >= 0 ? t : null;

    	}

    	intersectPlane( plane, target ) {

    		const t = this.distanceToPlane( plane );

    		if ( t === null ) {

    			return null;

    		}

    		return this.at( t, target );

    	}

    	intersectsPlane( plane ) {

    		// check if the ray lies on the plane first

    		const distToPoint = plane.distanceToPoint( this.origin );

    		if ( distToPoint === 0 ) {

    			return true;

    		}

    		const denominator = plane.normal.dot( this.direction );

    		if ( denominator * distToPoint < 0 ) {

    			return true;

    		}

    		// ray origin is behind the plane (and is pointing behind it)

    		return false;

    	}

    	intersectBox( box, target ) {

    		let tmin, tmax, tymin, tymax, tzmin, tzmax;

    		const invdirx = 1 / this.direction.x,
    			invdiry = 1 / this.direction.y,
    			invdirz = 1 / this.direction.z;

    		const origin = this.origin;

    		if ( invdirx >= 0 ) {

    			tmin = ( box.min.x - origin.x ) * invdirx;
    			tmax = ( box.max.x - origin.x ) * invdirx;

    		} else {

    			tmin = ( box.max.x - origin.x ) * invdirx;
    			tmax = ( box.min.x - origin.x ) * invdirx;

    		}

    		if ( invdiry >= 0 ) {

    			tymin = ( box.min.y - origin.y ) * invdiry;
    			tymax = ( box.max.y - origin.y ) * invdiry;

    		} else {

    			tymin = ( box.max.y - origin.y ) * invdiry;
    			tymax = ( box.min.y - origin.y ) * invdiry;

    		}

    		if ( ( tmin > tymax ) || ( tymin > tmax ) ) return null;

    		// These lines also handle the case where tmin or tmax is NaN
    		// (result of 0 * Infinity). x !== x returns true if x is NaN

    		if ( tymin > tmin || tmin !== tmin ) tmin = tymin;

    		if ( tymax < tmax || tmax !== tmax ) tmax = tymax;

    		if ( invdirz >= 0 ) {

    			tzmin = ( box.min.z - origin.z ) * invdirz;
    			tzmax = ( box.max.z - origin.z ) * invdirz;

    		} else {

    			tzmin = ( box.max.z - origin.z ) * invdirz;
    			tzmax = ( box.min.z - origin.z ) * invdirz;

    		}

    		if ( ( tmin > tzmax ) || ( tzmin > tmax ) ) return null;

    		if ( tzmin > tmin || tmin !== tmin ) tmin = tzmin;

    		if ( tzmax < tmax || tmax !== tmax ) tmax = tzmax;

    		//return point closest to the ray (positive side)

    		if ( tmax < 0 ) return null;

    		return this.at( tmin >= 0 ? tmin : tmax, target );

    	}

    	intersectsBox( box ) {

    		return this.intersectBox( box, _vector$a ) !== null;

    	}

    	intersectTriangle( a, b, c, backfaceCulling, target ) {

    		// Compute the offset origin, edges, and normal.

    		// from https://github.com/pmjoniak/GeometricTools/blob/master/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h

    		_edge1.subVectors( b, a );
    		_edge2.subVectors( c, a );
    		_normal$1.crossVectors( _edge1, _edge2 );

    		// Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,
    		// E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by
    		//   |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))
    		//   |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))
    		//   |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)
    		let DdN = this.direction.dot( _normal$1 );
    		let sign;

    		if ( DdN > 0 ) {

    			if ( backfaceCulling ) return null;
    			sign = 1;

    		} else if ( DdN < 0 ) {

    			sign = - 1;
    			DdN = - DdN;

    		} else {

    			return null;

    		}

    		_diff.subVectors( this.origin, a );
    		const DdQxE2 = sign * this.direction.dot( _edge2.crossVectors( _diff, _edge2 ) );

    		// b1 < 0, no intersection
    		if ( DdQxE2 < 0 ) {

    			return null;

    		}

    		const DdE1xQ = sign * this.direction.dot( _edge1.cross( _diff ) );

    		// b2 < 0, no intersection
    		if ( DdE1xQ < 0 ) {

    			return null;

    		}

    		// b1+b2 > 1, no intersection
    		if ( DdQxE2 + DdE1xQ > DdN ) {

    			return null;

    		}

    		// Line intersects triangle, check if ray does.
    		const QdN = - sign * _diff.dot( _normal$1 );

    		// t < 0, no intersection
    		if ( QdN < 0 ) {

    			return null;

    		}

    		// Ray intersects triangle.
    		return this.at( QdN / DdN, target );

    	}

    	applyMatrix4( matrix4 ) {

    		this.origin.applyMatrix4( matrix4 );
    		this.direction.transformDirection( matrix4 );

    		return this;

    	}

    	equals( ray ) {

    		return ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    }

    class Matrix4 {

    	constructor() {

    		Matrix4.prototype.isMatrix4 = true;

    		this.elements = [

    			1, 0, 0, 0,
    			0, 1, 0, 0,
    			0, 0, 1, 0,
    			0, 0, 0, 1

    		];

    	}

    	set( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {

    		const te = this.elements;

    		te[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;
    		te[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;
    		te[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;
    		te[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;

    		return this;

    	}

    	identity() {

    		this.set(

    			1, 0, 0, 0,
    			0, 1, 0, 0,
    			0, 0, 1, 0,
    			0, 0, 0, 1

    		);

    		return this;

    	}

    	clone() {

    		return new Matrix4().fromArray( this.elements );

    	}

    	copy( m ) {

    		const te = this.elements;
    		const me = m.elements;

    		te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ]; te[ 3 ] = me[ 3 ];
    		te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ]; te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ];
    		te[ 8 ] = me[ 8 ]; te[ 9 ] = me[ 9 ]; te[ 10 ] = me[ 10 ]; te[ 11 ] = me[ 11 ];
    		te[ 12 ] = me[ 12 ]; te[ 13 ] = me[ 13 ]; te[ 14 ] = me[ 14 ]; te[ 15 ] = me[ 15 ];

    		return this;

    	}

    	copyPosition( m ) {

    		const te = this.elements, me = m.elements;

    		te[ 12 ] = me[ 12 ];
    		te[ 13 ] = me[ 13 ];
    		te[ 14 ] = me[ 14 ];

    		return this;

    	}

    	setFromMatrix3( m ) {

    		const me = m.elements;

    		this.set(

    			me[ 0 ], me[ 3 ], me[ 6 ], 0,
    			me[ 1 ], me[ 4 ], me[ 7 ], 0,
    			me[ 2 ], me[ 5 ], me[ 8 ], 0,
    			0, 0, 0, 1

    		);

    		return this;

    	}

    	extractBasis( xAxis, yAxis, zAxis ) {

    		xAxis.setFromMatrixColumn( this, 0 );
    		yAxis.setFromMatrixColumn( this, 1 );
    		zAxis.setFromMatrixColumn( this, 2 );

    		return this;

    	}

    	makeBasis( xAxis, yAxis, zAxis ) {

    		this.set(
    			xAxis.x, yAxis.x, zAxis.x, 0,
    			xAxis.y, yAxis.y, zAxis.y, 0,
    			xAxis.z, yAxis.z, zAxis.z, 0,
    			0, 0, 0, 1
    		);

    		return this;

    	}

    	extractRotation( m ) {

    		// this method does not support reflection matrices

    		const te = this.elements;
    		const me = m.elements;

    		const scaleX = 1 / _v1$5.setFromMatrixColumn( m, 0 ).length();
    		const scaleY = 1 / _v1$5.setFromMatrixColumn( m, 1 ).length();
    		const scaleZ = 1 / _v1$5.setFromMatrixColumn( m, 2 ).length();

    		te[ 0 ] = me[ 0 ] * scaleX;
    		te[ 1 ] = me[ 1 ] * scaleX;
    		te[ 2 ] = me[ 2 ] * scaleX;
    		te[ 3 ] = 0;

    		te[ 4 ] = me[ 4 ] * scaleY;
    		te[ 5 ] = me[ 5 ] * scaleY;
    		te[ 6 ] = me[ 6 ] * scaleY;
    		te[ 7 ] = 0;

    		te[ 8 ] = me[ 8 ] * scaleZ;
    		te[ 9 ] = me[ 9 ] * scaleZ;
    		te[ 10 ] = me[ 10 ] * scaleZ;
    		te[ 11 ] = 0;

    		te[ 12 ] = 0;
    		te[ 13 ] = 0;
    		te[ 14 ] = 0;
    		te[ 15 ] = 1;

    		return this;

    	}

    	makeRotationFromEuler( euler ) {

    		const te = this.elements;

    		const x = euler.x, y = euler.y, z = euler.z;
    		const a = Math.cos( x ), b = Math.sin( x );
    		const c = Math.cos( y ), d = Math.sin( y );
    		const e = Math.cos( z ), f = Math.sin( z );

    		if ( euler.order === 'XYZ' ) {

    			const ae = a * e, af = a * f, be = b * e, bf = b * f;

    			te[ 0 ] = c * e;
    			te[ 4 ] = - c * f;
    			te[ 8 ] = d;

    			te[ 1 ] = af + be * d;
    			te[ 5 ] = ae - bf * d;
    			te[ 9 ] = - b * c;

    			te[ 2 ] = bf - ae * d;
    			te[ 6 ] = be + af * d;
    			te[ 10 ] = a * c;

    		} else if ( euler.order === 'YXZ' ) {

    			const ce = c * e, cf = c * f, de = d * e, df = d * f;

    			te[ 0 ] = ce + df * b;
    			te[ 4 ] = de * b - cf;
    			te[ 8 ] = a * d;

    			te[ 1 ] = a * f;
    			te[ 5 ] = a * e;
    			te[ 9 ] = - b;

    			te[ 2 ] = cf * b - de;
    			te[ 6 ] = df + ce * b;
    			te[ 10 ] = a * c;

    		} else if ( euler.order === 'ZXY' ) {

    			const ce = c * e, cf = c * f, de = d * e, df = d * f;

    			te[ 0 ] = ce - df * b;
    			te[ 4 ] = - a * f;
    			te[ 8 ] = de + cf * b;

    			te[ 1 ] = cf + de * b;
    			te[ 5 ] = a * e;
    			te[ 9 ] = df - ce * b;

    			te[ 2 ] = - a * d;
    			te[ 6 ] = b;
    			te[ 10 ] = a * c;

    		} else if ( euler.order === 'ZYX' ) {

    			const ae = a * e, af = a * f, be = b * e, bf = b * f;

    			te[ 0 ] = c * e;
    			te[ 4 ] = be * d - af;
    			te[ 8 ] = ae * d + bf;

    			te[ 1 ] = c * f;
    			te[ 5 ] = bf * d + ae;
    			te[ 9 ] = af * d - be;

    			te[ 2 ] = - d;
    			te[ 6 ] = b * c;
    			te[ 10 ] = a * c;

    		} else if ( euler.order === 'YZX' ) {

    			const ac = a * c, ad = a * d, bc = b * c, bd = b * d;

    			te[ 0 ] = c * e;
    			te[ 4 ] = bd - ac * f;
    			te[ 8 ] = bc * f + ad;

    			te[ 1 ] = f;
    			te[ 5 ] = a * e;
    			te[ 9 ] = - b * e;

    			te[ 2 ] = - d * e;
    			te[ 6 ] = ad * f + bc;
    			te[ 10 ] = ac - bd * f;

    		} else if ( euler.order === 'XZY' ) {

    			const ac = a * c, ad = a * d, bc = b * c, bd = b * d;

    			te[ 0 ] = c * e;
    			te[ 4 ] = - f;
    			te[ 8 ] = d * e;

    			te[ 1 ] = ac * f + bd;
    			te[ 5 ] = a * e;
    			te[ 9 ] = ad * f - bc;

    			te[ 2 ] = bc * f - ad;
    			te[ 6 ] = b * e;
    			te[ 10 ] = bd * f + ac;

    		}

    		// bottom row
    		te[ 3 ] = 0;
    		te[ 7 ] = 0;
    		te[ 11 ] = 0;

    		// last column
    		te[ 12 ] = 0;
    		te[ 13 ] = 0;
    		te[ 14 ] = 0;
    		te[ 15 ] = 1;

    		return this;

    	}

    	makeRotationFromQuaternion( q ) {

    		return this.compose( _zero, q, _one );

    	}

    	lookAt( eye, target, up ) {

    		const te = this.elements;

    		_z.subVectors( eye, target );

    		if ( _z.lengthSq() === 0 ) {

    			// eye and target are in the same position

    			_z.z = 1;

    		}

    		_z.normalize();
    		_x.crossVectors( up, _z );

    		if ( _x.lengthSq() === 0 ) {

    			// up and z are parallel

    			if ( Math.abs( up.z ) === 1 ) {

    				_z.x += 0.0001;

    			} else {

    				_z.z += 0.0001;

    			}

    			_z.normalize();
    			_x.crossVectors( up, _z );

    		}

    		_x.normalize();
    		_y.crossVectors( _z, _x );

    		te[ 0 ] = _x.x; te[ 4 ] = _y.x; te[ 8 ] = _z.x;
    		te[ 1 ] = _x.y; te[ 5 ] = _y.y; te[ 9 ] = _z.y;
    		te[ 2 ] = _x.z; te[ 6 ] = _y.z; te[ 10 ] = _z.z;

    		return this;

    	}

    	multiply( m ) {

    		return this.multiplyMatrices( this, m );

    	}

    	premultiply( m ) {

    		return this.multiplyMatrices( m, this );

    	}

    	multiplyMatrices( a, b ) {

    		const ae = a.elements;
    		const be = b.elements;
    		const te = this.elements;

    		const a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];
    		const a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];
    		const a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];
    		const a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];

    		const b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];
    		const b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];
    		const b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];
    		const b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];

    		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
    		te[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
    		te[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
    		te[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;

    		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
    		te[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
    		te[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
    		te[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;

    		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
    		te[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
    		te[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
    		te[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;

    		te[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
    		te[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
    		te[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
    		te[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;

    		return this;

    	}

    	multiplyScalar( s ) {

    		const te = this.elements;

    		te[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;
    		te[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;
    		te[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;
    		te[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;

    		return this;

    	}

    	determinant() {

    		const te = this.elements;

    		const n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];
    		const n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];
    		const n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];
    		const n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];

    		//TODO: make this more efficient
    		//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )

    		return (
    			n41 * (
    				+ n14 * n23 * n32
    				 - n13 * n24 * n32
    				 - n14 * n22 * n33
    				 + n12 * n24 * n33
    				 + n13 * n22 * n34
    				 - n12 * n23 * n34
    			) +
    			n42 * (
    				+ n11 * n23 * n34
    				 - n11 * n24 * n33
    				 + n14 * n21 * n33
    				 - n13 * n21 * n34
    				 + n13 * n24 * n31
    				 - n14 * n23 * n31
    			) +
    			n43 * (
    				+ n11 * n24 * n32
    				 - n11 * n22 * n34
    				 - n14 * n21 * n32
    				 + n12 * n21 * n34
    				 + n14 * n22 * n31
    				 - n12 * n24 * n31
    			) +
    			n44 * (
    				- n13 * n22 * n31
    				 - n11 * n23 * n32
    				 + n11 * n22 * n33
    				 + n13 * n21 * n32
    				 - n12 * n21 * n33
    				 + n12 * n23 * n31
    			)

    		);

    	}

    	transpose() {

    		const te = this.elements;
    		let tmp;

    		tmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;
    		tmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;
    		tmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;

    		tmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;
    		tmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;
    		tmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;

    		return this;

    	}

    	setPosition( x, y, z ) {

    		const te = this.elements;

    		if ( x.isVector3 ) {

    			te[ 12 ] = x.x;
    			te[ 13 ] = x.y;
    			te[ 14 ] = x.z;

    		} else {

    			te[ 12 ] = x;
    			te[ 13 ] = y;
    			te[ 14 ] = z;

    		}

    		return this;

    	}

    	invert() {

    		// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm
    		const te = this.elements,

    			n11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ], n41 = te[ 3 ],
    			n12 = te[ 4 ], n22 = te[ 5 ], n32 = te[ 6 ], n42 = te[ 7 ],
    			n13 = te[ 8 ], n23 = te[ 9 ], n33 = te[ 10 ], n43 = te[ 11 ],
    			n14 = te[ 12 ], n24 = te[ 13 ], n34 = te[ 14 ], n44 = te[ 15 ],

    			t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,
    			t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,
    			t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,
    			t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;

    		const det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;

    		if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );

    		const detInv = 1 / det;

    		te[ 0 ] = t11 * detInv;
    		te[ 1 ] = ( n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44 ) * detInv;
    		te[ 2 ] = ( n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44 ) * detInv;
    		te[ 3 ] = ( n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43 ) * detInv;

    		te[ 4 ] = t12 * detInv;
    		te[ 5 ] = ( n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44 ) * detInv;
    		te[ 6 ] = ( n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44 ) * detInv;
    		te[ 7 ] = ( n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43 ) * detInv;

    		te[ 8 ] = t13 * detInv;
    		te[ 9 ] = ( n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44 ) * detInv;
    		te[ 10 ] = ( n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44 ) * detInv;
    		te[ 11 ] = ( n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43 ) * detInv;

    		te[ 12 ] = t14 * detInv;
    		te[ 13 ] = ( n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34 ) * detInv;
    		te[ 14 ] = ( n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34 ) * detInv;
    		te[ 15 ] = ( n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33 ) * detInv;

    		return this;

    	}

    	scale( v ) {

    		const te = this.elements;
    		const x = v.x, y = v.y, z = v.z;

    		te[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;
    		te[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;
    		te[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;
    		te[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;

    		return this;

    	}

    	getMaxScaleOnAxis() {

    		const te = this.elements;

    		const scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];
    		const scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];
    		const scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];

    		return Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );

    	}

    	makeTranslation( x, y, z ) {

    		this.set(

    			1, 0, 0, x,
    			0, 1, 0, y,
    			0, 0, 1, z,
    			0, 0, 0, 1

    		);

    		return this;

    	}

    	makeRotationX( theta ) {

    		const c = Math.cos( theta ), s = Math.sin( theta );

    		this.set(

    			1, 0, 0, 0,
    			0, c, - s, 0,
    			0, s, c, 0,
    			0, 0, 0, 1

    		);

    		return this;

    	}

    	makeRotationY( theta ) {

    		const c = Math.cos( theta ), s = Math.sin( theta );

    		this.set(

    			 c, 0, s, 0,
    			 0, 1, 0, 0,
    			- s, 0, c, 0,
    			 0, 0, 0, 1

    		);

    		return this;

    	}

    	makeRotationZ( theta ) {

    		const c = Math.cos( theta ), s = Math.sin( theta );

    		this.set(

    			c, - s, 0, 0,
    			s, c, 0, 0,
    			0, 0, 1, 0,
    			0, 0, 0, 1

    		);

    		return this;

    	}

    	makeRotationAxis( axis, angle ) {

    		// Based on http://www.gamedev.net/reference/articles/article1199.asp

    		const c = Math.cos( angle );
    		const s = Math.sin( angle );
    		const t = 1 - c;
    		const x = axis.x, y = axis.y, z = axis.z;
    		const tx = t * x, ty = t * y;

    		this.set(

    			tx * x + c, tx * y - s * z, tx * z + s * y, 0,
    			tx * y + s * z, ty * y + c, ty * z - s * x, 0,
    			tx * z - s * y, ty * z + s * x, t * z * z + c, 0,
    			0, 0, 0, 1

    		);

    		return this;

    	}

    	makeScale( x, y, z ) {

    		this.set(

    			x, 0, 0, 0,
    			0, y, 0, 0,
    			0, 0, z, 0,
    			0, 0, 0, 1

    		);

    		return this;

    	}

    	makeShear( xy, xz, yx, yz, zx, zy ) {

    		this.set(

    			1, yx, zx, 0,
    			xy, 1, zy, 0,
    			xz, yz, 1, 0,
    			0, 0, 0, 1

    		);

    		return this;

    	}

    	compose( position, quaternion, scale ) {

    		const te = this.elements;

    		const x = quaternion._x, y = quaternion._y, z = quaternion._z, w = quaternion._w;
    		const x2 = x + x,	y2 = y + y, z2 = z + z;
    		const xx = x * x2, xy = x * y2, xz = x * z2;
    		const yy = y * y2, yz = y * z2, zz = z * z2;
    		const wx = w * x2, wy = w * y2, wz = w * z2;

    		const sx = scale.x, sy = scale.y, sz = scale.z;

    		te[ 0 ] = ( 1 - ( yy + zz ) ) * sx;
    		te[ 1 ] = ( xy + wz ) * sx;
    		te[ 2 ] = ( xz - wy ) * sx;
    		te[ 3 ] = 0;

    		te[ 4 ] = ( xy - wz ) * sy;
    		te[ 5 ] = ( 1 - ( xx + zz ) ) * sy;
    		te[ 6 ] = ( yz + wx ) * sy;
    		te[ 7 ] = 0;

    		te[ 8 ] = ( xz + wy ) * sz;
    		te[ 9 ] = ( yz - wx ) * sz;
    		te[ 10 ] = ( 1 - ( xx + yy ) ) * sz;
    		te[ 11 ] = 0;

    		te[ 12 ] = position.x;
    		te[ 13 ] = position.y;
    		te[ 14 ] = position.z;
    		te[ 15 ] = 1;

    		return this;

    	}

    	decompose( position, quaternion, scale ) {

    		const te = this.elements;

    		let sx = _v1$5.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();
    		const sy = _v1$5.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();
    		const sz = _v1$5.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();

    		// if determine is negative, we need to invert one scale
    		const det = this.determinant();
    		if ( det < 0 ) sx = - sx;

    		position.x = te[ 12 ];
    		position.y = te[ 13 ];
    		position.z = te[ 14 ];

    		// scale the rotation part
    		_m1$2.copy( this );

    		const invSX = 1 / sx;
    		const invSY = 1 / sy;
    		const invSZ = 1 / sz;

    		_m1$2.elements[ 0 ] *= invSX;
    		_m1$2.elements[ 1 ] *= invSX;
    		_m1$2.elements[ 2 ] *= invSX;

    		_m1$2.elements[ 4 ] *= invSY;
    		_m1$2.elements[ 5 ] *= invSY;
    		_m1$2.elements[ 6 ] *= invSY;

    		_m1$2.elements[ 8 ] *= invSZ;
    		_m1$2.elements[ 9 ] *= invSZ;
    		_m1$2.elements[ 10 ] *= invSZ;

    		quaternion.setFromRotationMatrix( _m1$2 );

    		scale.x = sx;
    		scale.y = sy;
    		scale.z = sz;

    		return this;

    	}

    	makePerspective( left, right, top, bottom, near, far ) {

    		const te = this.elements;
    		const x = 2 * near / ( right - left );
    		const y = 2 * near / ( top - bottom );

    		const a = ( right + left ) / ( right - left );
    		const b = ( top + bottom ) / ( top - bottom );
    		const c = - ( far + near ) / ( far - near );
    		const d = - 2 * far * near / ( far - near );

    		te[ 0 ] = x;	te[ 4 ] = 0;	te[ 8 ] = a;	te[ 12 ] = 0;
    		te[ 1 ] = 0;	te[ 5 ] = y;	te[ 9 ] = b;	te[ 13 ] = 0;
    		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = c;	te[ 14 ] = d;
    		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = - 1;	te[ 15 ] = 0;

    		return this;

    	}

    	makeOrthographic( left, right, top, bottom, near, far ) {

    		const te = this.elements;
    		const w = 1.0 / ( right - left );
    		const h = 1.0 / ( top - bottom );
    		const p = 1.0 / ( far - near );

    		const x = ( right + left ) * w;
    		const y = ( top + bottom ) * h;
    		const z = ( far + near ) * p;

    		te[ 0 ] = 2 * w;	te[ 4 ] = 0;	te[ 8 ] = 0;	te[ 12 ] = - x;
    		te[ 1 ] = 0;	te[ 5 ] = 2 * h;	te[ 9 ] = 0;	te[ 13 ] = - y;
    		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = - 2 * p;	te[ 14 ] = - z;
    		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = 0;	te[ 15 ] = 1;

    		return this;

    	}

    	equals( matrix ) {

    		const te = this.elements;
    		const me = matrix.elements;

    		for ( let i = 0; i < 16; i ++ ) {

    			if ( te[ i ] !== me[ i ] ) return false;

    		}

    		return true;

    	}

    	fromArray( array, offset = 0 ) {

    		for ( let i = 0; i < 16; i ++ ) {

    			this.elements[ i ] = array[ i + offset ];

    		}

    		return this;

    	}

    	toArray( array = [], offset = 0 ) {

    		const te = this.elements;

    		array[ offset ] = te[ 0 ];
    		array[ offset + 1 ] = te[ 1 ];
    		array[ offset + 2 ] = te[ 2 ];
    		array[ offset + 3 ] = te[ 3 ];

    		array[ offset + 4 ] = te[ 4 ];
    		array[ offset + 5 ] = te[ 5 ];
    		array[ offset + 6 ] = te[ 6 ];
    		array[ offset + 7 ] = te[ 7 ];

    		array[ offset + 8 ] = te[ 8 ];
    		array[ offset + 9 ] = te[ 9 ];
    		array[ offset + 10 ] = te[ 10 ];
    		array[ offset + 11 ] = te[ 11 ];

    		array[ offset + 12 ] = te[ 12 ];
    		array[ offset + 13 ] = te[ 13 ];
    		array[ offset + 14 ] = te[ 14 ];
    		array[ offset + 15 ] = te[ 15 ];

    		return array;

    	}

    }

    const _v1$5 = /*@__PURE__*/ new Vector3();
    const _m1$2 = /*@__PURE__*/ new Matrix4();
    const _zero = /*@__PURE__*/ new Vector3( 0, 0, 0 );
    const _one = /*@__PURE__*/ new Vector3( 1, 1, 1 );
    const _x = /*@__PURE__*/ new Vector3();
    const _y = /*@__PURE__*/ new Vector3();
    const _z = /*@__PURE__*/ new Vector3();

    const _matrix$1 = /*@__PURE__*/ new Matrix4();
    const _quaternion$3 = /*@__PURE__*/ new Quaternion();

    class Euler {

    	constructor( x = 0, y = 0, z = 0, order = Euler.DefaultOrder ) {

    		this.isEuler = true;

    		this._x = x;
    		this._y = y;
    		this._z = z;
    		this._order = order;

    	}

    	get x() {

    		return this._x;

    	}

    	set x( value ) {

    		this._x = value;
    		this._onChangeCallback();

    	}

    	get y() {

    		return this._y;

    	}

    	set y( value ) {

    		this._y = value;
    		this._onChangeCallback();

    	}

    	get z() {

    		return this._z;

    	}

    	set z( value ) {

    		this._z = value;
    		this._onChangeCallback();

    	}

    	get order() {

    		return this._order;

    	}

    	set order( value ) {

    		this._order = value;
    		this._onChangeCallback();

    	}

    	set( x, y, z, order = this._order ) {

    		this._x = x;
    		this._y = y;
    		this._z = z;
    		this._order = order;

    		this._onChangeCallback();

    		return this;

    	}

    	clone() {

    		return new this.constructor( this._x, this._y, this._z, this._order );

    	}

    	copy( euler ) {

    		this._x = euler._x;
    		this._y = euler._y;
    		this._z = euler._z;
    		this._order = euler._order;

    		this._onChangeCallback();

    		return this;

    	}

    	setFromRotationMatrix( m, order = this._order, update = true ) {

    		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

    		const te = m.elements;
    		const m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];
    		const m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];
    		const m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];

    		switch ( order ) {

    			case 'XYZ':

    				this._y = Math.asin( clamp( m13, - 1, 1 ) );

    				if ( Math.abs( m13 ) < 0.9999999 ) {

    					this._x = Math.atan2( - m23, m33 );
    					this._z = Math.atan2( - m12, m11 );

    				} else {

    					this._x = Math.atan2( m32, m22 );
    					this._z = 0;

    				}

    				break;

    			case 'YXZ':

    				this._x = Math.asin( - clamp( m23, - 1, 1 ) );

    				if ( Math.abs( m23 ) < 0.9999999 ) {

    					this._y = Math.atan2( m13, m33 );
    					this._z = Math.atan2( m21, m22 );

    				} else {

    					this._y = Math.atan2( - m31, m11 );
    					this._z = 0;

    				}

    				break;

    			case 'ZXY':

    				this._x = Math.asin( clamp( m32, - 1, 1 ) );

    				if ( Math.abs( m32 ) < 0.9999999 ) {

    					this._y = Math.atan2( - m31, m33 );
    					this._z = Math.atan2( - m12, m22 );

    				} else {

    					this._y = 0;
    					this._z = Math.atan2( m21, m11 );

    				}

    				break;

    			case 'ZYX':

    				this._y = Math.asin( - clamp( m31, - 1, 1 ) );

    				if ( Math.abs( m31 ) < 0.9999999 ) {

    					this._x = Math.atan2( m32, m33 );
    					this._z = Math.atan2( m21, m11 );

    				} else {

    					this._x = 0;
    					this._z = Math.atan2( - m12, m22 );

    				}

    				break;

    			case 'YZX':

    				this._z = Math.asin( clamp( m21, - 1, 1 ) );

    				if ( Math.abs( m21 ) < 0.9999999 ) {

    					this._x = Math.atan2( - m23, m22 );
    					this._y = Math.atan2( - m31, m11 );

    				} else {

    					this._x = 0;
    					this._y = Math.atan2( m13, m33 );

    				}

    				break;

    			case 'XZY':

    				this._z = Math.asin( - clamp( m12, - 1, 1 ) );

    				if ( Math.abs( m12 ) < 0.9999999 ) {

    					this._x = Math.atan2( m32, m22 );
    					this._y = Math.atan2( m13, m11 );

    				} else {

    					this._x = Math.atan2( - m23, m33 );
    					this._y = 0;

    				}

    				break;

    			default:

    				console.warn( 'THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order );

    		}

    		this._order = order;

    		if ( update === true ) this._onChangeCallback();

    		return this;

    	}

    	setFromQuaternion( q, order, update ) {

    		_matrix$1.makeRotationFromQuaternion( q );

    		return this.setFromRotationMatrix( _matrix$1, order, update );

    	}

    	setFromVector3( v, order = this._order ) {

    		return this.set( v.x, v.y, v.z, order );

    	}

    	reorder( newOrder ) {

    		// WARNING: this discards revolution information -bhouston

    		_quaternion$3.setFromEuler( this );

    		return this.setFromQuaternion( _quaternion$3, newOrder );

    	}

    	equals( euler ) {

    		return ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );

    	}

    	fromArray( array ) {

    		this._x = array[ 0 ];
    		this._y = array[ 1 ];
    		this._z = array[ 2 ];
    		if ( array[ 3 ] !== undefined ) this._order = array[ 3 ];

    		this._onChangeCallback();

    		return this;

    	}

    	toArray( array = [], offset = 0 ) {

    		array[ offset ] = this._x;
    		array[ offset + 1 ] = this._y;
    		array[ offset + 2 ] = this._z;
    		array[ offset + 3 ] = this._order;

    		return array;

    	}

    	_onChange( callback ) {

    		this._onChangeCallback = callback;

    		return this;

    	}

    	_onChangeCallback() {}

    	*[ Symbol.iterator ]() {

    		yield this._x;
    		yield this._y;
    		yield this._z;
    		yield this._order;

    	}

    	// @deprecated since r138, 02cf0df1cb4575d5842fef9c85bb5a89fe020d53

    	toVector3() {

    		console.error( 'THREE.Euler: .toVector3() has been removed. Use Vector3.setFromEuler() instead' );

    	}

    }

    Euler.DefaultOrder = 'XYZ';
    Euler.RotationOrders = [ 'XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX' ];

    class Layers {

    	constructor() {

    		this.mask = 1 | 0;

    	}

    	set( channel ) {

    		this.mask = ( 1 << channel | 0 ) >>> 0;

    	}

    	enable( channel ) {

    		this.mask |= 1 << channel | 0;

    	}

    	enableAll() {

    		this.mask = 0xffffffff | 0;

    	}

    	toggle( channel ) {

    		this.mask ^= 1 << channel | 0;

    	}

    	disable( channel ) {

    		this.mask &= ~ ( 1 << channel | 0 );

    	}

    	disableAll() {

    		this.mask = 0;

    	}

    	test( layers ) {

    		return ( this.mask & layers.mask ) !== 0;

    	}

    	isEnabled( channel ) {

    		return ( this.mask & ( 1 << channel | 0 ) ) !== 0;

    	}

    }

    let _object3DId = 0;

    const _v1$4 = /*@__PURE__*/ new Vector3();
    const _q1 = /*@__PURE__*/ new Quaternion();
    const _m1$1 = /*@__PURE__*/ new Matrix4();
    const _target = /*@__PURE__*/ new Vector3();

    const _position$3 = /*@__PURE__*/ new Vector3();
    const _scale$2 = /*@__PURE__*/ new Vector3();
    const _quaternion$2 = /*@__PURE__*/ new Quaternion();

    const _xAxis = /*@__PURE__*/ new Vector3( 1, 0, 0 );
    const _yAxis = /*@__PURE__*/ new Vector3( 0, 1, 0 );
    const _zAxis = /*@__PURE__*/ new Vector3( 0, 0, 1 );

    const _addedEvent = { type: 'added' };
    const _removedEvent = { type: 'removed' };

    class Object3D extends EventDispatcher {

    	constructor() {

    		super();

    		this.isObject3D = true;

    		Object.defineProperty( this, 'id', { value: _object3DId ++ } );

    		this.uuid = generateUUID();

    		this.name = '';
    		this.type = 'Object3D';

    		this.parent = null;
    		this.children = [];

    		this.up = Object3D.DefaultUp.clone();

    		const position = new Vector3();
    		const rotation = new Euler();
    		const quaternion = new Quaternion();
    		const scale = new Vector3( 1, 1, 1 );

    		function onRotationChange() {

    			quaternion.setFromEuler( rotation, false );

    		}

    		function onQuaternionChange() {

    			rotation.setFromQuaternion( quaternion, undefined, false );

    		}

    		rotation._onChange( onRotationChange );
    		quaternion._onChange( onQuaternionChange );

    		Object.defineProperties( this, {
    			position: {
    				configurable: true,
    				enumerable: true,
    				value: position
    			},
    			rotation: {
    				configurable: true,
    				enumerable: true,
    				value: rotation
    			},
    			quaternion: {
    				configurable: true,
    				enumerable: true,
    				value: quaternion
    			},
    			scale: {
    				configurable: true,
    				enumerable: true,
    				value: scale
    			},
    			modelViewMatrix: {
    				value: new Matrix4()
    			},
    			normalMatrix: {
    				value: new Matrix3()
    			}
    		} );

    		this.matrix = new Matrix4();
    		this.matrixWorld = new Matrix4();

    		this.matrixAutoUpdate = Object3D.DefaultMatrixAutoUpdate;
    		this.matrixWorldNeedsUpdate = false;

    		this.matrixWorldAutoUpdate = Object3D.DefaultMatrixWorldAutoUpdate; // checked by the renderer

    		this.layers = new Layers();
    		this.visible = true;

    		this.castShadow = false;
    		this.receiveShadow = false;

    		this.frustumCulled = true;
    		this.renderOrder = 0;

    		this.animations = [];

    		this.userData = {};

    	}

    	onBeforeRender( /* renderer, scene, camera, geometry, material, group */ ) {}

    	onAfterRender( /* renderer, scene, camera, geometry, material, group */ ) {}

    	applyMatrix4( matrix ) {

    		if ( this.matrixAutoUpdate ) this.updateMatrix();

    		this.matrix.premultiply( matrix );

    		this.matrix.decompose( this.position, this.quaternion, this.scale );

    	}

    	applyQuaternion( q ) {

    		this.quaternion.premultiply( q );

    		return this;

    	}

    	setRotationFromAxisAngle( axis, angle ) {

    		// assumes axis is normalized

    		this.quaternion.setFromAxisAngle( axis, angle );

    	}

    	setRotationFromEuler( euler ) {

    		this.quaternion.setFromEuler( euler, true );

    	}

    	setRotationFromMatrix( m ) {

    		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

    		this.quaternion.setFromRotationMatrix( m );

    	}

    	setRotationFromQuaternion( q ) {

    		// assumes q is normalized

    		this.quaternion.copy( q );

    	}

    	rotateOnAxis( axis, angle ) {

    		// rotate object on axis in object space
    		// axis is assumed to be normalized

    		_q1.setFromAxisAngle( axis, angle );

    		this.quaternion.multiply( _q1 );

    		return this;

    	}

    	rotateOnWorldAxis( axis, angle ) {

    		// rotate object on axis in world space
    		// axis is assumed to be normalized
    		// method assumes no rotated parent

    		_q1.setFromAxisAngle( axis, angle );

    		this.quaternion.premultiply( _q1 );

    		return this;

    	}

    	rotateX( angle ) {

    		return this.rotateOnAxis( _xAxis, angle );

    	}

    	rotateY( angle ) {

    		return this.rotateOnAxis( _yAxis, angle );

    	}

    	rotateZ( angle ) {

    		return this.rotateOnAxis( _zAxis, angle );

    	}

    	translateOnAxis( axis, distance ) {

    		// translate object by distance along axis in object space
    		// axis is assumed to be normalized

    		_v1$4.copy( axis ).applyQuaternion( this.quaternion );

    		this.position.add( _v1$4.multiplyScalar( distance ) );

    		return this;

    	}

    	translateX( distance ) {

    		return this.translateOnAxis( _xAxis, distance );

    	}

    	translateY( distance ) {

    		return this.translateOnAxis( _yAxis, distance );

    	}

    	translateZ( distance ) {

    		return this.translateOnAxis( _zAxis, distance );

    	}

    	localToWorld( vector ) {

    		return vector.applyMatrix4( this.matrixWorld );

    	}

    	worldToLocal( vector ) {

    		return vector.applyMatrix4( _m1$1.copy( this.matrixWorld ).invert() );

    	}

    	lookAt( x, y, z ) {

    		// This method does not support objects having non-uniformly-scaled parent(s)

    		if ( x.isVector3 ) {

    			_target.copy( x );

    		} else {

    			_target.set( x, y, z );

    		}

    		const parent = this.parent;

    		this.updateWorldMatrix( true, false );

    		_position$3.setFromMatrixPosition( this.matrixWorld );

    		if ( this.isCamera || this.isLight ) {

    			_m1$1.lookAt( _position$3, _target, this.up );

    		} else {

    			_m1$1.lookAt( _target, _position$3, this.up );

    		}

    		this.quaternion.setFromRotationMatrix( _m1$1 );

    		if ( parent ) {

    			_m1$1.extractRotation( parent.matrixWorld );
    			_q1.setFromRotationMatrix( _m1$1 );
    			this.quaternion.premultiply( _q1.invert() );

    		}

    	}

    	add( object ) {

    		if ( arguments.length > 1 ) {

    			for ( let i = 0; i < arguments.length; i ++ ) {

    				this.add( arguments[ i ] );

    			}

    			return this;

    		}

    		if ( object === this ) {

    			console.error( 'THREE.Object3D.add: object can\'t be added as a child of itself.', object );
    			return this;

    		}

    		if ( object && object.isObject3D ) {

    			if ( object.parent !== null ) {

    				object.parent.remove( object );

    			}

    			object.parent = this;
    			this.children.push( object );

    			object.dispatchEvent( _addedEvent );

    		} else {

    			console.error( 'THREE.Object3D.add: object not an instance of THREE.Object3D.', object );

    		}

    		return this;

    	}

    	remove( object ) {

    		if ( arguments.length > 1 ) {

    			for ( let i = 0; i < arguments.length; i ++ ) {

    				this.remove( arguments[ i ] );

    			}

    			return this;

    		}

    		const index = this.children.indexOf( object );

    		if ( index !== - 1 ) {

    			object.parent = null;
    			this.children.splice( index, 1 );

    			object.dispatchEvent( _removedEvent );

    		}

    		return this;

    	}

    	removeFromParent() {

    		const parent = this.parent;

    		if ( parent !== null ) {

    			parent.remove( this );

    		}

    		return this;

    	}

    	clear() {

    		for ( let i = 0; i < this.children.length; i ++ ) {

    			const object = this.children[ i ];

    			object.parent = null;

    			object.dispatchEvent( _removedEvent );

    		}

    		this.children.length = 0;

    		return this;


    	}

    	attach( object ) {

    		// adds object as a child of this, while maintaining the object's world transform

    		// Note: This method does not support scene graphs having non-uniformly-scaled nodes(s)

    		this.updateWorldMatrix( true, false );

    		_m1$1.copy( this.matrixWorld ).invert();

    		if ( object.parent !== null ) {

    			object.parent.updateWorldMatrix( true, false );

    			_m1$1.multiply( object.parent.matrixWorld );

    		}

    		object.applyMatrix4( _m1$1 );

    		this.add( object );

    		object.updateWorldMatrix( false, true );

    		return this;

    	}

    	getObjectById( id ) {

    		return this.getObjectByProperty( 'id', id );

    	}

    	getObjectByName( name ) {

    		return this.getObjectByProperty( 'name', name );

    	}

    	getObjectByProperty( name, value ) {

    		if ( this[ name ] === value ) return this;

    		for ( let i = 0, l = this.children.length; i < l; i ++ ) {

    			const child = this.children[ i ];
    			const object = child.getObjectByProperty( name, value );

    			if ( object !== undefined ) {

    				return object;

    			}

    		}

    		return undefined;

    	}

    	getWorldPosition( target ) {

    		this.updateWorldMatrix( true, false );

    		return target.setFromMatrixPosition( this.matrixWorld );

    	}

    	getWorldQuaternion( target ) {

    		this.updateWorldMatrix( true, false );

    		this.matrixWorld.decompose( _position$3, target, _scale$2 );

    		return target;

    	}

    	getWorldScale( target ) {

    		this.updateWorldMatrix( true, false );

    		this.matrixWorld.decompose( _position$3, _quaternion$2, target );

    		return target;

    	}

    	getWorldDirection( target ) {

    		this.updateWorldMatrix( true, false );

    		const e = this.matrixWorld.elements;

    		return target.set( e[ 8 ], e[ 9 ], e[ 10 ] ).normalize();

    	}

    	raycast( /* raycaster, intersects */ ) {}

    	traverse( callback ) {

    		callback( this );

    		const children = this.children;

    		for ( let i = 0, l = children.length; i < l; i ++ ) {

    			children[ i ].traverse( callback );

    		}

    	}

    	traverseVisible( callback ) {

    		if ( this.visible === false ) return;

    		callback( this );

    		const children = this.children;

    		for ( let i = 0, l = children.length; i < l; i ++ ) {

    			children[ i ].traverseVisible( callback );

    		}

    	}

    	traverseAncestors( callback ) {

    		const parent = this.parent;

    		if ( parent !== null ) {

    			callback( parent );

    			parent.traverseAncestors( callback );

    		}

    	}

    	updateMatrix() {

    		this.matrix.compose( this.position, this.quaternion, this.scale );

    		this.matrixWorldNeedsUpdate = true;

    	}

    	updateMatrixWorld( force ) {

    		if ( this.matrixAutoUpdate ) this.updateMatrix();

    		if ( this.matrixWorldNeedsUpdate || force ) {

    			if ( this.parent === null ) {

    				this.matrixWorld.copy( this.matrix );

    			} else {

    				this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );

    			}

    			this.matrixWorldNeedsUpdate = false;

    			force = true;

    		}

    		// update children

    		const children = this.children;

    		for ( let i = 0, l = children.length; i < l; i ++ ) {

    			const child = children[ i ];

    			if ( child.matrixWorldAutoUpdate === true || force === true ) {

    				child.updateMatrixWorld( force );

    			}

    		}

    	}

    	updateWorldMatrix( updateParents, updateChildren ) {

    		const parent = this.parent;

    		if ( updateParents === true && parent !== null && parent.matrixWorldAutoUpdate === true ) {

    			parent.updateWorldMatrix( true, false );

    		}

    		if ( this.matrixAutoUpdate ) this.updateMatrix();

    		if ( this.parent === null ) {

    			this.matrixWorld.copy( this.matrix );

    		} else {

    			this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );

    		}

    		// update children

    		if ( updateChildren === true ) {

    			const children = this.children;

    			for ( let i = 0, l = children.length; i < l; i ++ ) {

    				const child = children[ i ];

    				if ( child.matrixWorldAutoUpdate === true ) {

    					child.updateWorldMatrix( false, true );

    				}

    			}

    		}

    	}

    	toJSON( meta ) {

    		// meta is a string when called from JSON.stringify
    		const isRootObject = ( meta === undefined || typeof meta === 'string' );

    		const output = {};

    		// meta is a hash used to collect geometries, materials.
    		// not providing it implies that this is the root object
    		// being serialized.
    		if ( isRootObject ) {

    			// initialize meta obj
    			meta = {
    				geometries: {},
    				materials: {},
    				textures: {},
    				images: {},
    				shapes: {},
    				skeletons: {},
    				animations: {},
    				nodes: {}
    			};

    			output.metadata = {
    				version: 4.5,
    				type: 'Object',
    				generator: 'Object3D.toJSON'
    			};

    		}

    		// standard Object3D serialization

    		const object = {};

    		object.uuid = this.uuid;
    		object.type = this.type;

    		if ( this.name !== '' ) object.name = this.name;
    		if ( this.castShadow === true ) object.castShadow = true;
    		if ( this.receiveShadow === true ) object.receiveShadow = true;
    		if ( this.visible === false ) object.visible = false;
    		if ( this.frustumCulled === false ) object.frustumCulled = false;
    		if ( this.renderOrder !== 0 ) object.renderOrder = this.renderOrder;
    		if ( JSON.stringify( this.userData ) !== '{}' ) object.userData = this.userData;

    		object.layers = this.layers.mask;
    		object.matrix = this.matrix.toArray();

    		if ( this.matrixAutoUpdate === false ) object.matrixAutoUpdate = false;

    		// object specific properties

    		if ( this.isInstancedMesh ) {

    			object.type = 'InstancedMesh';
    			object.count = this.count;
    			object.instanceMatrix = this.instanceMatrix.toJSON();
    			if ( this.instanceColor !== null ) object.instanceColor = this.instanceColor.toJSON();

    		}

    		//

    		function serialize( library, element ) {

    			if ( library[ element.uuid ] === undefined ) {

    				library[ element.uuid ] = element.toJSON( meta );

    			}

    			return element.uuid;

    		}

    		if ( this.isScene ) {

    			if ( this.background ) {

    				if ( this.background.isColor ) {

    					object.background = this.background.toJSON();

    				} else if ( this.background.isTexture ) {

    					object.background = this.background.toJSON( meta ).uuid;

    				}

    			}

    			if ( this.environment && this.environment.isTexture && this.environment.isRenderTargetTexture !== true ) {

    				object.environment = this.environment.toJSON( meta ).uuid;

    			}

    		} else if ( this.isMesh || this.isLine || this.isPoints ) {

    			object.geometry = serialize( meta.geometries, this.geometry );

    			const parameters = this.geometry.parameters;

    			if ( parameters !== undefined && parameters.shapes !== undefined ) {

    				const shapes = parameters.shapes;

    				if ( Array.isArray( shapes ) ) {

    					for ( let i = 0, l = shapes.length; i < l; i ++ ) {

    						const shape = shapes[ i ];

    						serialize( meta.shapes, shape );

    					}

    				} else {

    					serialize( meta.shapes, shapes );

    				}

    			}

    		}

    		if ( this.isSkinnedMesh ) {

    			object.bindMode = this.bindMode;
    			object.bindMatrix = this.bindMatrix.toArray();

    			if ( this.skeleton !== undefined ) {

    				serialize( meta.skeletons, this.skeleton );

    				object.skeleton = this.skeleton.uuid;

    			}

    		}

    		if ( this.material !== undefined ) {

    			if ( Array.isArray( this.material ) ) {

    				const uuids = [];

    				for ( let i = 0, l = this.material.length; i < l; i ++ ) {

    					uuids.push( serialize( meta.materials, this.material[ i ] ) );

    				}

    				object.material = uuids;

    			} else {

    				object.material = serialize( meta.materials, this.material );

    			}

    		}

    		//

    		if ( this.children.length > 0 ) {

    			object.children = [];

    			for ( let i = 0; i < this.children.length; i ++ ) {

    				object.children.push( this.children[ i ].toJSON( meta ).object );

    			}

    		}

    		//

    		if ( this.animations.length > 0 ) {

    			object.animations = [];

    			for ( let i = 0; i < this.animations.length; i ++ ) {

    				const animation = this.animations[ i ];

    				object.animations.push( serialize( meta.animations, animation ) );

    			}

    		}

    		if ( isRootObject ) {

    			const geometries = extractFromCache( meta.geometries );
    			const materials = extractFromCache( meta.materials );
    			const textures = extractFromCache( meta.textures );
    			const images = extractFromCache( meta.images );
    			const shapes = extractFromCache( meta.shapes );
    			const skeletons = extractFromCache( meta.skeletons );
    			const animations = extractFromCache( meta.animations );
    			const nodes = extractFromCache( meta.nodes );

    			if ( geometries.length > 0 ) output.geometries = geometries;
    			if ( materials.length > 0 ) output.materials = materials;
    			if ( textures.length > 0 ) output.textures = textures;
    			if ( images.length > 0 ) output.images = images;
    			if ( shapes.length > 0 ) output.shapes = shapes;
    			if ( skeletons.length > 0 ) output.skeletons = skeletons;
    			if ( animations.length > 0 ) output.animations = animations;
    			if ( nodes.length > 0 ) output.nodes = nodes;

    		}

    		output.object = object;

    		return output;

    		// extract data from the cache hash
    		// remove metadata on each item
    		// and return as array
    		function extractFromCache( cache ) {

    			const values = [];
    			for ( const key in cache ) {

    				const data = cache[ key ];
    				delete data.metadata;
    				values.push( data );

    			}

    			return values;

    		}

    	}

    	clone( recursive ) {

    		return new this.constructor().copy( this, recursive );

    	}

    	copy( source, recursive = true ) {

    		this.name = source.name;

    		this.up.copy( source.up );

    		this.position.copy( source.position );
    		this.rotation.order = source.rotation.order;
    		this.quaternion.copy( source.quaternion );
    		this.scale.copy( source.scale );

    		this.matrix.copy( source.matrix );
    		this.matrixWorld.copy( source.matrixWorld );

    		this.matrixAutoUpdate = source.matrixAutoUpdate;
    		this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;

    		this.matrixWorldAutoUpdate = source.matrixWorldAutoUpdate;

    		this.layers.mask = source.layers.mask;
    		this.visible = source.visible;

    		this.castShadow = source.castShadow;
    		this.receiveShadow = source.receiveShadow;

    		this.frustumCulled = source.frustumCulled;
    		this.renderOrder = source.renderOrder;

    		this.userData = JSON.parse( JSON.stringify( source.userData ) );

    		if ( recursive === true ) {

    			for ( let i = 0; i < source.children.length; i ++ ) {

    				const child = source.children[ i ];
    				this.add( child.clone() );

    			}

    		}

    		return this;

    	}

    }

    Object3D.DefaultUp = /*@__PURE__*/ new Vector3( 0, 1, 0 );
    Object3D.DefaultMatrixAutoUpdate = true;
    Object3D.DefaultMatrixWorldAutoUpdate = true;

    const _v0$1 = /*@__PURE__*/ new Vector3();
    const _v1$3 = /*@__PURE__*/ new Vector3();
    const _v2$2 = /*@__PURE__*/ new Vector3();
    const _v3$1 = /*@__PURE__*/ new Vector3();

    const _vab = /*@__PURE__*/ new Vector3();
    const _vac = /*@__PURE__*/ new Vector3();
    const _vbc = /*@__PURE__*/ new Vector3();
    const _vap = /*@__PURE__*/ new Vector3();
    const _vbp = /*@__PURE__*/ new Vector3();
    const _vcp = /*@__PURE__*/ new Vector3();

    class Triangle {

    	constructor( a = new Vector3(), b = new Vector3(), c = new Vector3() ) {

    		this.a = a;
    		this.b = b;
    		this.c = c;

    	}

    	static getNormal( a, b, c, target ) {

    		target.subVectors( c, b );
    		_v0$1.subVectors( a, b );
    		target.cross( _v0$1 );

    		const targetLengthSq = target.lengthSq();
    		if ( targetLengthSq > 0 ) {

    			return target.multiplyScalar( 1 / Math.sqrt( targetLengthSq ) );

    		}

    		return target.set( 0, 0, 0 );

    	}

    	// static/instance method to calculate barycentric coordinates
    	// based on: http://www.blackpawn.com/texts/pointinpoly/default.html
    	static getBarycoord( point, a, b, c, target ) {

    		_v0$1.subVectors( c, a );
    		_v1$3.subVectors( b, a );
    		_v2$2.subVectors( point, a );

    		const dot00 = _v0$1.dot( _v0$1 );
    		const dot01 = _v0$1.dot( _v1$3 );
    		const dot02 = _v0$1.dot( _v2$2 );
    		const dot11 = _v1$3.dot( _v1$3 );
    		const dot12 = _v1$3.dot( _v2$2 );

    		const denom = ( dot00 * dot11 - dot01 * dot01 );

    		// collinear or singular triangle
    		if ( denom === 0 ) {

    			// arbitrary location outside of triangle?
    			// not sure if this is the best idea, maybe should be returning undefined
    			return target.set( - 2, - 1, - 1 );

    		}

    		const invDenom = 1 / denom;
    		const u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;
    		const v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;

    		// barycentric coordinates must always sum to 1
    		return target.set( 1 - u - v, v, u );

    	}

    	static containsPoint( point, a, b, c ) {

    		this.getBarycoord( point, a, b, c, _v3$1 );

    		return ( _v3$1.x >= 0 ) && ( _v3$1.y >= 0 ) && ( ( _v3$1.x + _v3$1.y ) <= 1 );

    	}

    	static getUV( point, p1, p2, p3, uv1, uv2, uv3, target ) {

    		this.getBarycoord( point, p1, p2, p3, _v3$1 );

    		target.set( 0, 0 );
    		target.addScaledVector( uv1, _v3$1.x );
    		target.addScaledVector( uv2, _v3$1.y );
    		target.addScaledVector( uv3, _v3$1.z );

    		return target;

    	}

    	static isFrontFacing( a, b, c, direction ) {

    		_v0$1.subVectors( c, b );
    		_v1$3.subVectors( a, b );

    		// strictly front facing
    		return ( _v0$1.cross( _v1$3 ).dot( direction ) < 0 ) ? true : false;

    	}

    	set( a, b, c ) {

    		this.a.copy( a );
    		this.b.copy( b );
    		this.c.copy( c );

    		return this;

    	}

    	setFromPointsAndIndices( points, i0, i1, i2 ) {

    		this.a.copy( points[ i0 ] );
    		this.b.copy( points[ i1 ] );
    		this.c.copy( points[ i2 ] );

    		return this;

    	}

    	setFromAttributeAndIndices( attribute, i0, i1, i2 ) {

    		this.a.fromBufferAttribute( attribute, i0 );
    		this.b.fromBufferAttribute( attribute, i1 );
    		this.c.fromBufferAttribute( attribute, i2 );

    		return this;

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    	copy( triangle ) {

    		this.a.copy( triangle.a );
    		this.b.copy( triangle.b );
    		this.c.copy( triangle.c );

    		return this;

    	}

    	getArea() {

    		_v0$1.subVectors( this.c, this.b );
    		_v1$3.subVectors( this.a, this.b );

    		return _v0$1.cross( _v1$3 ).length() * 0.5;

    	}

    	getMidpoint( target ) {

    		return target.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );

    	}

    	getNormal( target ) {

    		return Triangle.getNormal( this.a, this.b, this.c, target );

    	}

    	getPlane( target ) {

    		return target.setFromCoplanarPoints( this.a, this.b, this.c );

    	}

    	getBarycoord( point, target ) {

    		return Triangle.getBarycoord( point, this.a, this.b, this.c, target );

    	}

    	getUV( point, uv1, uv2, uv3, target ) {

    		return Triangle.getUV( point, this.a, this.b, this.c, uv1, uv2, uv3, target );

    	}

    	containsPoint( point ) {

    		return Triangle.containsPoint( point, this.a, this.b, this.c );

    	}

    	isFrontFacing( direction ) {

    		return Triangle.isFrontFacing( this.a, this.b, this.c, direction );

    	}

    	intersectsBox( box ) {

    		return box.intersectsTriangle( this );

    	}

    	closestPointToPoint( p, target ) {

    		const a = this.a, b = this.b, c = this.c;
    		let v, w;

    		// algorithm thanks to Real-Time Collision Detection by Christer Ericson,
    		// published by Morgan Kaufmann Publishers, (c) 2005 Elsevier Inc.,
    		// under the accompanying license; see chapter 5.1.5 for detailed explanation.
    		// basically, we're distinguishing which of the voronoi regions of the triangle
    		// the point lies in with the minimum amount of redundant computation.

    		_vab.subVectors( b, a );
    		_vac.subVectors( c, a );
    		_vap.subVectors( p, a );
    		const d1 = _vab.dot( _vap );
    		const d2 = _vac.dot( _vap );
    		if ( d1 <= 0 && d2 <= 0 ) {

    			// vertex region of A; barycentric coords (1, 0, 0)
    			return target.copy( a );

    		}

    		_vbp.subVectors( p, b );
    		const d3 = _vab.dot( _vbp );
    		const d4 = _vac.dot( _vbp );
    		if ( d3 >= 0 && d4 <= d3 ) {

    			// vertex region of B; barycentric coords (0, 1, 0)
    			return target.copy( b );

    		}

    		const vc = d1 * d4 - d3 * d2;
    		if ( vc <= 0 && d1 >= 0 && d3 <= 0 ) {

    			v = d1 / ( d1 - d3 );
    			// edge region of AB; barycentric coords (1-v, v, 0)
    			return target.copy( a ).addScaledVector( _vab, v );

    		}

    		_vcp.subVectors( p, c );
    		const d5 = _vab.dot( _vcp );
    		const d6 = _vac.dot( _vcp );
    		if ( d6 >= 0 && d5 <= d6 ) {

    			// vertex region of C; barycentric coords (0, 0, 1)
    			return target.copy( c );

    		}

    		const vb = d5 * d2 - d1 * d6;
    		if ( vb <= 0 && d2 >= 0 && d6 <= 0 ) {

    			w = d2 / ( d2 - d6 );
    			// edge region of AC; barycentric coords (1-w, 0, w)
    			return target.copy( a ).addScaledVector( _vac, w );

    		}

    		const va = d3 * d6 - d5 * d4;
    		if ( va <= 0 && ( d4 - d3 ) >= 0 && ( d5 - d6 ) >= 0 ) {

    			_vbc.subVectors( c, b );
    			w = ( d4 - d3 ) / ( ( d4 - d3 ) + ( d5 - d6 ) );
    			// edge region of BC; barycentric coords (0, 1-w, w)
    			return target.copy( b ).addScaledVector( _vbc, w ); // edge region of BC

    		}

    		// face region
    		const denom = 1 / ( va + vb + vc );
    		// u = va * denom
    		v = vb * denom;
    		w = vc * denom;

    		return target.copy( a ).addScaledVector( _vab, v ).addScaledVector( _vac, w );

    	}

    	equals( triangle ) {

    		return triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );

    	}

    }

    let materialId = 0;

    class Material extends EventDispatcher {

    	constructor() {

    		super();

    		this.isMaterial = true;

    		Object.defineProperty( this, 'id', { value: materialId ++ } );

    		this.uuid = generateUUID();

    		this.name = '';
    		this.type = 'Material';

    		this.blending = NormalBlending;
    		this.side = FrontSide;
    		this.vertexColors = false;

    		this.opacity = 1;
    		this.transparent = false;

    		this.blendSrc = SrcAlphaFactor;
    		this.blendDst = OneMinusSrcAlphaFactor;
    		this.blendEquation = AddEquation;
    		this.blendSrcAlpha = null;
    		this.blendDstAlpha = null;
    		this.blendEquationAlpha = null;

    		this.depthFunc = LessEqualDepth;
    		this.depthTest = true;
    		this.depthWrite = true;

    		this.stencilWriteMask = 0xff;
    		this.stencilFunc = AlwaysStencilFunc;
    		this.stencilRef = 0;
    		this.stencilFuncMask = 0xff;
    		this.stencilFail = KeepStencilOp;
    		this.stencilZFail = KeepStencilOp;
    		this.stencilZPass = KeepStencilOp;
    		this.stencilWrite = false;

    		this.clippingPlanes = null;
    		this.clipIntersection = false;
    		this.clipShadows = false;

    		this.shadowSide = null;

    		this.colorWrite = true;

    		this.precision = null; // override the renderer's default precision for this material

    		this.polygonOffset = false;
    		this.polygonOffsetFactor = 0;
    		this.polygonOffsetUnits = 0;

    		this.dithering = false;

    		this.alphaToCoverage = false;
    		this.premultipliedAlpha = false;

    		this.visible = true;

    		this.toneMapped = true;

    		this.userData = {};

    		this.version = 0;

    		this._alphaTest = 0;

    	}

    	get alphaTest() {

    		return this._alphaTest;

    	}

    	set alphaTest( value ) {

    		if ( this._alphaTest > 0 !== value > 0 ) {

    			this.version ++;

    		}

    		this._alphaTest = value;

    	}

    	onBuild( /* shaderobject, renderer */ ) {}

    	onBeforeRender( /* renderer, scene, camera, geometry, object, group */ ) {}

    	onBeforeCompile( /* shaderobject, renderer */ ) {}

    	customProgramCacheKey() {

    		return this.onBeforeCompile.toString();

    	}

    	setValues( values ) {

    		if ( values === undefined ) return;

    		for ( const key in values ) {

    			const newValue = values[ key ];

    			if ( newValue === undefined ) {

    				console.warn( 'THREE.Material: \'' + key + '\' parameter is undefined.' );
    				continue;

    			}

    			const currentValue = this[ key ];

    			if ( currentValue === undefined ) {

    				console.warn( 'THREE.' + this.type + ': \'' + key + '\' is not a property of this material.' );
    				continue;

    			}

    			if ( currentValue && currentValue.isColor ) {

    				currentValue.set( newValue );

    			} else if ( ( currentValue && currentValue.isVector3 ) && ( newValue && newValue.isVector3 ) ) {

    				currentValue.copy( newValue );

    			} else {

    				this[ key ] = newValue;

    			}

    		}

    	}

    	toJSON( meta ) {

    		const isRootObject = ( meta === undefined || typeof meta === 'string' );

    		if ( isRootObject ) {

    			meta = {
    				textures: {},
    				images: {}
    			};

    		}

    		const data = {
    			metadata: {
    				version: 4.5,
    				type: 'Material',
    				generator: 'Material.toJSON'
    			}
    		};

    		// standard Material serialization
    		data.uuid = this.uuid;
    		data.type = this.type;

    		if ( this.name !== '' ) data.name = this.name;

    		if ( this.color && this.color.isColor ) data.color = this.color.getHex();

    		if ( this.roughness !== undefined ) data.roughness = this.roughness;
    		if ( this.metalness !== undefined ) data.metalness = this.metalness;

    		if ( this.sheen !== undefined ) data.sheen = this.sheen;
    		if ( this.sheenColor && this.sheenColor.isColor ) data.sheenColor = this.sheenColor.getHex();
    		if ( this.sheenRoughness !== undefined ) data.sheenRoughness = this.sheenRoughness;
    		if ( this.emissive && this.emissive.isColor ) data.emissive = this.emissive.getHex();
    		if ( this.emissiveIntensity && this.emissiveIntensity !== 1 ) data.emissiveIntensity = this.emissiveIntensity;

    		if ( this.specular && this.specular.isColor ) data.specular = this.specular.getHex();
    		if ( this.specularIntensity !== undefined ) data.specularIntensity = this.specularIntensity;
    		if ( this.specularColor && this.specularColor.isColor ) data.specularColor = this.specularColor.getHex();
    		if ( this.shininess !== undefined ) data.shininess = this.shininess;
    		if ( this.clearcoat !== undefined ) data.clearcoat = this.clearcoat;
    		if ( this.clearcoatRoughness !== undefined ) data.clearcoatRoughness = this.clearcoatRoughness;

    		if ( this.clearcoatMap && this.clearcoatMap.isTexture ) {

    			data.clearcoatMap = this.clearcoatMap.toJSON( meta ).uuid;

    		}

    		if ( this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture ) {

    			data.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON( meta ).uuid;

    		}

    		if ( this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture ) {

    			data.clearcoatNormalMap = this.clearcoatNormalMap.toJSON( meta ).uuid;
    			data.clearcoatNormalScale = this.clearcoatNormalScale.toArray();

    		}

    		if ( this.iridescence !== undefined ) data.iridescence = this.iridescence;
    		if ( this.iridescenceIOR !== undefined ) data.iridescenceIOR = this.iridescenceIOR;
    		if ( this.iridescenceThicknessRange !== undefined ) data.iridescenceThicknessRange = this.iridescenceThicknessRange;

    		if ( this.iridescenceMap && this.iridescenceMap.isTexture ) {

    			data.iridescenceMap = this.iridescenceMap.toJSON( meta ).uuid;

    		}

    		if ( this.iridescenceThicknessMap && this.iridescenceThicknessMap.isTexture ) {

    			data.iridescenceThicknessMap = this.iridescenceThicknessMap.toJSON( meta ).uuid;

    		}

    		if ( this.map && this.map.isTexture ) data.map = this.map.toJSON( meta ).uuid;
    		if ( this.matcap && this.matcap.isTexture ) data.matcap = this.matcap.toJSON( meta ).uuid;
    		if ( this.alphaMap && this.alphaMap.isTexture ) data.alphaMap = this.alphaMap.toJSON( meta ).uuid;

    		if ( this.lightMap && this.lightMap.isTexture ) {

    			data.lightMap = this.lightMap.toJSON( meta ).uuid;
    			data.lightMapIntensity = this.lightMapIntensity;

    		}

    		if ( this.aoMap && this.aoMap.isTexture ) {

    			data.aoMap = this.aoMap.toJSON( meta ).uuid;
    			data.aoMapIntensity = this.aoMapIntensity;

    		}

    		if ( this.bumpMap && this.bumpMap.isTexture ) {

    			data.bumpMap = this.bumpMap.toJSON( meta ).uuid;
    			data.bumpScale = this.bumpScale;

    		}

    		if ( this.normalMap && this.normalMap.isTexture ) {

    			data.normalMap = this.normalMap.toJSON( meta ).uuid;
    			data.normalMapType = this.normalMapType;
    			data.normalScale = this.normalScale.toArray();

    		}

    		if ( this.displacementMap && this.displacementMap.isTexture ) {

    			data.displacementMap = this.displacementMap.toJSON( meta ).uuid;
    			data.displacementScale = this.displacementScale;
    			data.displacementBias = this.displacementBias;

    		}

    		if ( this.roughnessMap && this.roughnessMap.isTexture ) data.roughnessMap = this.roughnessMap.toJSON( meta ).uuid;
    		if ( this.metalnessMap && this.metalnessMap.isTexture ) data.metalnessMap = this.metalnessMap.toJSON( meta ).uuid;

    		if ( this.emissiveMap && this.emissiveMap.isTexture ) data.emissiveMap = this.emissiveMap.toJSON( meta ).uuid;
    		if ( this.specularMap && this.specularMap.isTexture ) data.specularMap = this.specularMap.toJSON( meta ).uuid;
    		if ( this.specularIntensityMap && this.specularIntensityMap.isTexture ) data.specularIntensityMap = this.specularIntensityMap.toJSON( meta ).uuid;
    		if ( this.specularColorMap && this.specularColorMap.isTexture ) data.specularColorMap = this.specularColorMap.toJSON( meta ).uuid;

    		if ( this.envMap && this.envMap.isTexture ) {

    			data.envMap = this.envMap.toJSON( meta ).uuid;

    			if ( this.combine !== undefined ) data.combine = this.combine;

    		}

    		if ( this.envMapIntensity !== undefined ) data.envMapIntensity = this.envMapIntensity;
    		if ( this.reflectivity !== undefined ) data.reflectivity = this.reflectivity;
    		if ( this.refractionRatio !== undefined ) data.refractionRatio = this.refractionRatio;

    		if ( this.gradientMap && this.gradientMap.isTexture ) {

    			data.gradientMap = this.gradientMap.toJSON( meta ).uuid;

    		}

    		if ( this.transmission !== undefined ) data.transmission = this.transmission;
    		if ( this.transmissionMap && this.transmissionMap.isTexture ) data.transmissionMap = this.transmissionMap.toJSON( meta ).uuid;
    		if ( this.thickness !== undefined ) data.thickness = this.thickness;
    		if ( this.thicknessMap && this.thicknessMap.isTexture ) data.thicknessMap = this.thicknessMap.toJSON( meta ).uuid;
    		if ( this.attenuationDistance !== undefined ) data.attenuationDistance = this.attenuationDistance;
    		if ( this.attenuationColor !== undefined ) data.attenuationColor = this.attenuationColor.getHex();

    		if ( this.size !== undefined ) data.size = this.size;
    		if ( this.shadowSide !== null ) data.shadowSide = this.shadowSide;
    		if ( this.sizeAttenuation !== undefined ) data.sizeAttenuation = this.sizeAttenuation;

    		if ( this.blending !== NormalBlending ) data.blending = this.blending;
    		if ( this.side !== FrontSide ) data.side = this.side;
    		if ( this.vertexColors ) data.vertexColors = true;

    		if ( this.opacity < 1 ) data.opacity = this.opacity;
    		if ( this.transparent === true ) data.transparent = this.transparent;

    		data.depthFunc = this.depthFunc;
    		data.depthTest = this.depthTest;
    		data.depthWrite = this.depthWrite;
    		data.colorWrite = this.colorWrite;

    		data.stencilWrite = this.stencilWrite;
    		data.stencilWriteMask = this.stencilWriteMask;
    		data.stencilFunc = this.stencilFunc;
    		data.stencilRef = this.stencilRef;
    		data.stencilFuncMask = this.stencilFuncMask;
    		data.stencilFail = this.stencilFail;
    		data.stencilZFail = this.stencilZFail;
    		data.stencilZPass = this.stencilZPass;

    		// rotation (SpriteMaterial)
    		if ( this.rotation !== undefined && this.rotation !== 0 ) data.rotation = this.rotation;

    		if ( this.polygonOffset === true ) data.polygonOffset = true;
    		if ( this.polygonOffsetFactor !== 0 ) data.polygonOffsetFactor = this.polygonOffsetFactor;
    		if ( this.polygonOffsetUnits !== 0 ) data.polygonOffsetUnits = this.polygonOffsetUnits;

    		if ( this.linewidth !== undefined && this.linewidth !== 1 ) data.linewidth = this.linewidth;
    		if ( this.dashSize !== undefined ) data.dashSize = this.dashSize;
    		if ( this.gapSize !== undefined ) data.gapSize = this.gapSize;
    		if ( this.scale !== undefined ) data.scale = this.scale;

    		if ( this.dithering === true ) data.dithering = true;

    		if ( this.alphaTest > 0 ) data.alphaTest = this.alphaTest;
    		if ( this.alphaToCoverage === true ) data.alphaToCoverage = this.alphaToCoverage;
    		if ( this.premultipliedAlpha === true ) data.premultipliedAlpha = this.premultipliedAlpha;

    		if ( this.wireframe === true ) data.wireframe = this.wireframe;
    		if ( this.wireframeLinewidth > 1 ) data.wireframeLinewidth = this.wireframeLinewidth;
    		if ( this.wireframeLinecap !== 'round' ) data.wireframeLinecap = this.wireframeLinecap;
    		if ( this.wireframeLinejoin !== 'round' ) data.wireframeLinejoin = this.wireframeLinejoin;

    		if ( this.flatShading === true ) data.flatShading = this.flatShading;

    		if ( this.visible === false ) data.visible = false;

    		if ( this.toneMapped === false ) data.toneMapped = false;

    		if ( this.fog === false ) data.fog = false;

    		if ( JSON.stringify( this.userData ) !== '{}' ) data.userData = this.userData;

    		// TODO: Copied from Object3D.toJSON

    		function extractFromCache( cache ) {

    			const values = [];

    			for ( const key in cache ) {

    				const data = cache[ key ];
    				delete data.metadata;
    				values.push( data );

    			}

    			return values;

    		}

    		if ( isRootObject ) {

    			const textures = extractFromCache( meta.textures );
    			const images = extractFromCache( meta.images );

    			if ( textures.length > 0 ) data.textures = textures;
    			if ( images.length > 0 ) data.images = images;

    		}

    		return data;

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    	copy( source ) {

    		this.name = source.name;

    		this.blending = source.blending;
    		this.side = source.side;
    		this.vertexColors = source.vertexColors;

    		this.opacity = source.opacity;
    		this.transparent = source.transparent;

    		this.blendSrc = source.blendSrc;
    		this.blendDst = source.blendDst;
    		this.blendEquation = source.blendEquation;
    		this.blendSrcAlpha = source.blendSrcAlpha;
    		this.blendDstAlpha = source.blendDstAlpha;
    		this.blendEquationAlpha = source.blendEquationAlpha;

    		this.depthFunc = source.depthFunc;
    		this.depthTest = source.depthTest;
    		this.depthWrite = source.depthWrite;

    		this.stencilWriteMask = source.stencilWriteMask;
    		this.stencilFunc = source.stencilFunc;
    		this.stencilRef = source.stencilRef;
    		this.stencilFuncMask = source.stencilFuncMask;
    		this.stencilFail = source.stencilFail;
    		this.stencilZFail = source.stencilZFail;
    		this.stencilZPass = source.stencilZPass;
    		this.stencilWrite = source.stencilWrite;

    		const srcPlanes = source.clippingPlanes;
    		let dstPlanes = null;

    		if ( srcPlanes !== null ) {

    			const n = srcPlanes.length;
    			dstPlanes = new Array( n );

    			for ( let i = 0; i !== n; ++ i ) {

    				dstPlanes[ i ] = srcPlanes[ i ].clone();

    			}

    		}

    		this.clippingPlanes = dstPlanes;
    		this.clipIntersection = source.clipIntersection;
    		this.clipShadows = source.clipShadows;

    		this.shadowSide = source.shadowSide;

    		this.colorWrite = source.colorWrite;

    		this.precision = source.precision;

    		this.polygonOffset = source.polygonOffset;
    		this.polygonOffsetFactor = source.polygonOffsetFactor;
    		this.polygonOffsetUnits = source.polygonOffsetUnits;

    		this.dithering = source.dithering;

    		this.alphaTest = source.alphaTest;
    		this.alphaToCoverage = source.alphaToCoverage;
    		this.premultipliedAlpha = source.premultipliedAlpha;

    		this.visible = source.visible;

    		this.toneMapped = source.toneMapped;

    		this.userData = JSON.parse( JSON.stringify( source.userData ) );

    		return this;

    	}

    	dispose() {

    		this.dispatchEvent( { type: 'dispose' } );

    	}

    	set needsUpdate( value ) {

    		if ( value === true ) this.version ++;

    	}

    }

    class MeshBasicMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isMeshBasicMaterial = true;

    		this.type = 'MeshBasicMaterial';

    		this.color = new Color( 0xffffff ); // emissive

    		this.map = null;

    		this.lightMap = null;
    		this.lightMapIntensity = 1.0;

    		this.aoMap = null;
    		this.aoMapIntensity = 1.0;

    		this.specularMap = null;

    		this.alphaMap = null;

    		this.envMap = null;
    		this.combine = MultiplyOperation;
    		this.reflectivity = 1;
    		this.refractionRatio = 0.98;

    		this.wireframe = false;
    		this.wireframeLinewidth = 1;
    		this.wireframeLinecap = 'round';
    		this.wireframeLinejoin = 'round';

    		this.fog = true;

    		this.setValues( parameters );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.color.copy( source.color );

    		this.map = source.map;

    		this.lightMap = source.lightMap;
    		this.lightMapIntensity = source.lightMapIntensity;

    		this.aoMap = source.aoMap;
    		this.aoMapIntensity = source.aoMapIntensity;

    		this.specularMap = source.specularMap;

    		this.alphaMap = source.alphaMap;

    		this.envMap = source.envMap;
    		this.combine = source.combine;
    		this.reflectivity = source.reflectivity;
    		this.refractionRatio = source.refractionRatio;

    		this.wireframe = source.wireframe;
    		this.wireframeLinewidth = source.wireframeLinewidth;
    		this.wireframeLinecap = source.wireframeLinecap;
    		this.wireframeLinejoin = source.wireframeLinejoin;

    		this.fog = source.fog;

    		return this;

    	}

    }

    const _vector$9 = /*@__PURE__*/ new Vector3();
    const _vector2$1 = /*@__PURE__*/ new Vector2();

    class BufferAttribute {

    	constructor( array, itemSize, normalized ) {

    		if ( Array.isArray( array ) ) {

    			throw new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );

    		}

    		this.isBufferAttribute = true;

    		this.name = '';

    		this.array = array;
    		this.itemSize = itemSize;
    		this.count = array !== undefined ? array.length / itemSize : 0;
    		this.normalized = normalized === true;

    		this.usage = StaticDrawUsage;
    		this.updateRange = { offset: 0, count: - 1 };

    		this.version = 0;

    	}

    	onUploadCallback() {}

    	set needsUpdate( value ) {

    		if ( value === true ) this.version ++;

    	}

    	setUsage( value ) {

    		this.usage = value;

    		return this;

    	}

    	copy( source ) {

    		this.name = source.name;
    		this.array = new source.array.constructor( source.array );
    		this.itemSize = source.itemSize;
    		this.count = source.count;
    		this.normalized = source.normalized;

    		this.usage = source.usage;

    		return this;

    	}

    	copyAt( index1, attribute, index2 ) {

    		index1 *= this.itemSize;
    		index2 *= attribute.itemSize;

    		for ( let i = 0, l = this.itemSize; i < l; i ++ ) {

    			this.array[ index1 + i ] = attribute.array[ index2 + i ];

    		}

    		return this;

    	}

    	copyArray( array ) {

    		this.array.set( array );

    		return this;

    	}

    	applyMatrix3( m ) {

    		if ( this.itemSize === 2 ) {

    			for ( let i = 0, l = this.count; i < l; i ++ ) {

    				_vector2$1.fromBufferAttribute( this, i );
    				_vector2$1.applyMatrix3( m );

    				this.setXY( i, _vector2$1.x, _vector2$1.y );

    			}

    		} else if ( this.itemSize === 3 ) {

    			for ( let i = 0, l = this.count; i < l; i ++ ) {

    				_vector$9.fromBufferAttribute( this, i );
    				_vector$9.applyMatrix3( m );

    				this.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );

    			}

    		}

    		return this;

    	}

    	applyMatrix4( m ) {

    		for ( let i = 0, l = this.count; i < l; i ++ ) {

    			_vector$9.fromBufferAttribute( this, i );

    			_vector$9.applyMatrix4( m );

    			this.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );

    		}

    		return this;

    	}

    	applyNormalMatrix( m ) {

    		for ( let i = 0, l = this.count; i < l; i ++ ) {

    			_vector$9.fromBufferAttribute( this, i );

    			_vector$9.applyNormalMatrix( m );

    			this.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );

    		}

    		return this;

    	}

    	transformDirection( m ) {

    		for ( let i = 0, l = this.count; i < l; i ++ ) {

    			_vector$9.fromBufferAttribute( this, i );

    			_vector$9.transformDirection( m );

    			this.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );

    		}

    		return this;

    	}

    	set( value, offset = 0 ) {

    		// Matching BufferAttribute constructor, do not normalize the array.
    		this.array.set( value, offset );

    		return this;

    	}

    	getX( index ) {

    		let x = this.array[ index * this.itemSize ];

    		if ( this.normalized ) x = denormalize( x, this.array );

    		return x;

    	}

    	setX( index, x ) {

    		if ( this.normalized ) x = normalize( x, this.array );

    		this.array[ index * this.itemSize ] = x;

    		return this;

    	}

    	getY( index ) {

    		let y = this.array[ index * this.itemSize + 1 ];

    		if ( this.normalized ) y = denormalize( y, this.array );

    		return y;

    	}

    	setY( index, y ) {

    		if ( this.normalized ) y = normalize( y, this.array );

    		this.array[ index * this.itemSize + 1 ] = y;

    		return this;

    	}

    	getZ( index ) {

    		let z = this.array[ index * this.itemSize + 2 ];

    		if ( this.normalized ) z = denormalize( z, this.array );

    		return z;

    	}

    	setZ( index, z ) {

    		if ( this.normalized ) z = normalize( z, this.array );

    		this.array[ index * this.itemSize + 2 ] = z;

    		return this;

    	}

    	getW( index ) {

    		let w = this.array[ index * this.itemSize + 3 ];

    		if ( this.normalized ) w = denormalize( w, this.array );

    		return w;

    	}

    	setW( index, w ) {

    		if ( this.normalized ) w = normalize( w, this.array );

    		this.array[ index * this.itemSize + 3 ] = w;

    		return this;

    	}

    	setXY( index, x, y ) {

    		index *= this.itemSize;

    		if ( this.normalized ) {

    			x = normalize( x, this.array );
    			y = normalize( y, this.array );

    		}

    		this.array[ index + 0 ] = x;
    		this.array[ index + 1 ] = y;

    		return this;

    	}

    	setXYZ( index, x, y, z ) {

    		index *= this.itemSize;

    		if ( this.normalized ) {

    			x = normalize( x, this.array );
    			y = normalize( y, this.array );
    			z = normalize( z, this.array );

    		}

    		this.array[ index + 0 ] = x;
    		this.array[ index + 1 ] = y;
    		this.array[ index + 2 ] = z;

    		return this;

    	}

    	setXYZW( index, x, y, z, w ) {

    		index *= this.itemSize;

    		if ( this.normalized ) {

    			x = normalize( x, this.array );
    			y = normalize( y, this.array );
    			z = normalize( z, this.array );
    			w = normalize( w, this.array );

    		}

    		this.array[ index + 0 ] = x;
    		this.array[ index + 1 ] = y;
    		this.array[ index + 2 ] = z;
    		this.array[ index + 3 ] = w;

    		return this;

    	}

    	onUpload( callback ) {

    		this.onUploadCallback = callback;

    		return this;

    	}

    	clone() {

    		return new this.constructor( this.array, this.itemSize ).copy( this );

    	}

    	toJSON() {

    		const data = {
    			itemSize: this.itemSize,
    			type: this.array.constructor.name,
    			array: Array.from( this.array ),
    			normalized: this.normalized
    		};

    		if ( this.name !== '' ) data.name = this.name;
    		if ( this.usage !== StaticDrawUsage ) data.usage = this.usage;
    		if ( this.updateRange.offset !== 0 || this.updateRange.count !== - 1 ) data.updateRange = this.updateRange;

    		return data;

    	}

    	// @deprecated

    	copyColorsArray() {

    		console.error( 'THREE.BufferAttribute: copyColorsArray() was removed in r144.' );

    	}

    	copyVector2sArray() {

    		console.error( 'THREE.BufferAttribute: copyVector2sArray() was removed in r144.' );

    	}

    	copyVector3sArray() {

    		console.error( 'THREE.BufferAttribute: copyVector3sArray() was removed in r144.' );

    	}

    	copyVector4sArray() {

    		console.error( 'THREE.BufferAttribute: copyVector4sArray() was removed in r144.' );

    	}

    }

    //

    class Int8BufferAttribute extends BufferAttribute {

    	constructor( array, itemSize, normalized ) {

    		super( new Int8Array( array ), itemSize, normalized );

    	}

    }

    class Uint8BufferAttribute extends BufferAttribute {

    	constructor( array, itemSize, normalized ) {

    		super( new Uint8Array( array ), itemSize, normalized );

    	}

    }

    class Uint8ClampedBufferAttribute extends BufferAttribute {

    	constructor( array, itemSize, normalized ) {

    		super( new Uint8ClampedArray( array ), itemSize, normalized );

    	}

    }

    class Int16BufferAttribute extends BufferAttribute {

    	constructor( array, itemSize, normalized ) {

    		super( new Int16Array( array ), itemSize, normalized );

    	}

    }

    class Uint16BufferAttribute extends BufferAttribute {

    	constructor( array, itemSize, normalized ) {

    		super( new Uint16Array( array ), itemSize, normalized );

    	}

    }

    class Int32BufferAttribute extends BufferAttribute {

    	constructor( array, itemSize, normalized ) {

    		super( new Int32Array( array ), itemSize, normalized );

    	}

    }

    class Uint32BufferAttribute extends BufferAttribute {

    	constructor( array, itemSize, normalized ) {

    		super( new Uint32Array( array ), itemSize, normalized );

    	}

    }

    class Float16BufferAttribute extends BufferAttribute {

    	constructor( array, itemSize, normalized ) {

    		super( new Uint16Array( array ), itemSize, normalized );

    		this.isFloat16BufferAttribute = true;

    	}

    }


    class Float32BufferAttribute extends BufferAttribute {

    	constructor( array, itemSize, normalized ) {

    		super( new Float32Array( array ), itemSize, normalized );

    	}

    }

    class Float64BufferAttribute extends BufferAttribute {

    	constructor( array, itemSize, normalized ) {

    		super( new Float64Array( array ), itemSize, normalized );

    	}

    }

    let _id$1 = 0;

    const _m1 = /*@__PURE__*/ new Matrix4();
    const _obj = /*@__PURE__*/ new Object3D();
    const _offset = /*@__PURE__*/ new Vector3();
    const _box$1 = /*@__PURE__*/ new Box3();
    const _boxMorphTargets = /*@__PURE__*/ new Box3();
    const _vector$8 = /*@__PURE__*/ new Vector3();

    class BufferGeometry extends EventDispatcher {

    	constructor() {

    		super();

    		this.isBufferGeometry = true;

    		Object.defineProperty( this, 'id', { value: _id$1 ++ } );

    		this.uuid = generateUUID();

    		this.name = '';
    		this.type = 'BufferGeometry';

    		this.index = null;
    		this.attributes = {};

    		this.morphAttributes = {};
    		this.morphTargetsRelative = false;

    		this.groups = [];

    		this.boundingBox = null;
    		this.boundingSphere = null;

    		this.drawRange = { start: 0, count: Infinity };

    		this.userData = {};

    	}

    	getIndex() {

    		return this.index;

    	}

    	setIndex( index ) {

    		if ( Array.isArray( index ) ) {

    			this.index = new ( arrayNeedsUint32( index ) ? Uint32BufferAttribute : Uint16BufferAttribute )( index, 1 );

    		} else {

    			this.index = index;

    		}

    		return this;

    	}

    	getAttribute( name ) {

    		return this.attributes[ name ];

    	}

    	setAttribute( name, attribute ) {

    		this.attributes[ name ] = attribute;

    		return this;

    	}

    	deleteAttribute( name ) {

    		delete this.attributes[ name ];

    		return this;

    	}

    	hasAttribute( name ) {

    		return this.attributes[ name ] !== undefined;

    	}

    	addGroup( start, count, materialIndex = 0 ) {

    		this.groups.push( {

    			start: start,
    			count: count,
    			materialIndex: materialIndex

    		} );

    	}

    	clearGroups() {

    		this.groups = [];

    	}

    	setDrawRange( start, count ) {

    		this.drawRange.start = start;
    		this.drawRange.count = count;

    	}

    	applyMatrix4( matrix ) {

    		const position = this.attributes.position;

    		if ( position !== undefined ) {

    			position.applyMatrix4( matrix );

    			position.needsUpdate = true;

    		}

    		const normal = this.attributes.normal;

    		if ( normal !== undefined ) {

    			const normalMatrix = new Matrix3().getNormalMatrix( matrix );

    			normal.applyNormalMatrix( normalMatrix );

    			normal.needsUpdate = true;

    		}

    		const tangent = this.attributes.tangent;

    		if ( tangent !== undefined ) {

    			tangent.transformDirection( matrix );

    			tangent.needsUpdate = true;

    		}

    		if ( this.boundingBox !== null ) {

    			this.computeBoundingBox();

    		}

    		if ( this.boundingSphere !== null ) {

    			this.computeBoundingSphere();

    		}

    		return this;

    	}

    	applyQuaternion( q ) {

    		_m1.makeRotationFromQuaternion( q );

    		this.applyMatrix4( _m1 );

    		return this;

    	}

    	rotateX( angle ) {

    		// rotate geometry around world x-axis

    		_m1.makeRotationX( angle );

    		this.applyMatrix4( _m1 );

    		return this;

    	}

    	rotateY( angle ) {

    		// rotate geometry around world y-axis

    		_m1.makeRotationY( angle );

    		this.applyMatrix4( _m1 );

    		return this;

    	}

    	rotateZ( angle ) {

    		// rotate geometry around world z-axis

    		_m1.makeRotationZ( angle );

    		this.applyMatrix4( _m1 );

    		return this;

    	}

    	translate( x, y, z ) {

    		// translate geometry

    		_m1.makeTranslation( x, y, z );

    		this.applyMatrix4( _m1 );

    		return this;

    	}

    	scale( x, y, z ) {

    		// scale geometry

    		_m1.makeScale( x, y, z );

    		this.applyMatrix4( _m1 );

    		return this;

    	}

    	lookAt( vector ) {

    		_obj.lookAt( vector );

    		_obj.updateMatrix();

    		this.applyMatrix4( _obj.matrix );

    		return this;

    	}

    	center() {

    		this.computeBoundingBox();

    		this.boundingBox.getCenter( _offset ).negate();

    		this.translate( _offset.x, _offset.y, _offset.z );

    		return this;

    	}

    	setFromPoints( points ) {

    		const position = [];

    		for ( let i = 0, l = points.length; i < l; i ++ ) {

    			const point = points[ i ];
    			position.push( point.x, point.y, point.z || 0 );

    		}

    		this.setAttribute( 'position', new Float32BufferAttribute( position, 3 ) );

    		return this;

    	}

    	computeBoundingBox() {

    		if ( this.boundingBox === null ) {

    			this.boundingBox = new Box3();

    		}

    		const position = this.attributes.position;
    		const morphAttributesPosition = this.morphAttributes.position;

    		if ( position && position.isGLBufferAttribute ) {

    			console.error( 'THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box. Alternatively set "mesh.frustumCulled" to "false".', this );

    			this.boundingBox.set(
    				new Vector3( - Infinity, - Infinity, - Infinity ),
    				new Vector3( + Infinity, + Infinity, + Infinity )
    			);

    			return;

    		}

    		if ( position !== undefined ) {

    			this.boundingBox.setFromBufferAttribute( position );

    			// process morph attributes if present

    			if ( morphAttributesPosition ) {

    				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {

    					const morphAttribute = morphAttributesPosition[ i ];
    					_box$1.setFromBufferAttribute( morphAttribute );

    					if ( this.morphTargetsRelative ) {

    						_vector$8.addVectors( this.boundingBox.min, _box$1.min );
    						this.boundingBox.expandByPoint( _vector$8 );

    						_vector$8.addVectors( this.boundingBox.max, _box$1.max );
    						this.boundingBox.expandByPoint( _vector$8 );

    					} else {

    						this.boundingBox.expandByPoint( _box$1.min );
    						this.boundingBox.expandByPoint( _box$1.max );

    					}

    				}

    			}

    		} else {

    			this.boundingBox.makeEmpty();

    		}

    		if ( isNaN( this.boundingBox.min.x ) || isNaN( this.boundingBox.min.y ) || isNaN( this.boundingBox.min.z ) ) {

    			console.error( 'THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this );

    		}

    	}

    	computeBoundingSphere() {

    		if ( this.boundingSphere === null ) {

    			this.boundingSphere = new Sphere();

    		}

    		const position = this.attributes.position;
    		const morphAttributesPosition = this.morphAttributes.position;

    		if ( position && position.isGLBufferAttribute ) {

    			console.error( 'THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere. Alternatively set "mesh.frustumCulled" to "false".', this );

    			this.boundingSphere.set( new Vector3(), Infinity );

    			return;

    		}

    		if ( position ) {

    			// first, find the center of the bounding sphere

    			const center = this.boundingSphere.center;

    			_box$1.setFromBufferAttribute( position );

    			// process morph attributes if present

    			if ( morphAttributesPosition ) {

    				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {

    					const morphAttribute = morphAttributesPosition[ i ];
    					_boxMorphTargets.setFromBufferAttribute( morphAttribute );

    					if ( this.morphTargetsRelative ) {

    						_vector$8.addVectors( _box$1.min, _boxMorphTargets.min );
    						_box$1.expandByPoint( _vector$8 );

    						_vector$8.addVectors( _box$1.max, _boxMorphTargets.max );
    						_box$1.expandByPoint( _vector$8 );

    					} else {

    						_box$1.expandByPoint( _boxMorphTargets.min );
    						_box$1.expandByPoint( _boxMorphTargets.max );

    					}

    				}

    			}

    			_box$1.getCenter( center );

    			// second, try to find a boundingSphere with a radius smaller than the
    			// boundingSphere of the boundingBox: sqrt(3) smaller in the best case

    			let maxRadiusSq = 0;

    			for ( let i = 0, il = position.count; i < il; i ++ ) {

    				_vector$8.fromBufferAttribute( position, i );

    				maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$8 ) );

    			}

    			// process morph attributes if present

    			if ( morphAttributesPosition ) {

    				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {

    					const morphAttribute = morphAttributesPosition[ i ];
    					const morphTargetsRelative = this.morphTargetsRelative;

    					for ( let j = 0, jl = morphAttribute.count; j < jl; j ++ ) {

    						_vector$8.fromBufferAttribute( morphAttribute, j );

    						if ( morphTargetsRelative ) {

    							_offset.fromBufferAttribute( position, j );
    							_vector$8.add( _offset );

    						}

    						maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$8 ) );

    					}

    				}

    			}

    			this.boundingSphere.radius = Math.sqrt( maxRadiusSq );

    			if ( isNaN( this.boundingSphere.radius ) ) {

    				console.error( 'THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this );

    			}

    		}

    	}

    	computeTangents() {

    		const index = this.index;
    		const attributes = this.attributes;

    		// based on http://www.terathon.com/code/tangent.html
    		// (per vertex tangents)

    		if ( index === null ||
    			 attributes.position === undefined ||
    			 attributes.normal === undefined ||
    			 attributes.uv === undefined ) {

    			console.error( 'THREE.BufferGeometry: .computeTangents() failed. Missing required attributes (index, position, normal or uv)' );
    			return;

    		}

    		const indices = index.array;
    		const positions = attributes.position.array;
    		const normals = attributes.normal.array;
    		const uvs = attributes.uv.array;

    		const nVertices = positions.length / 3;

    		if ( this.hasAttribute( 'tangent' ) === false ) {

    			this.setAttribute( 'tangent', new BufferAttribute( new Float32Array( 4 * nVertices ), 4 ) );

    		}

    		const tangents = this.getAttribute( 'tangent' ).array;

    		const tan1 = [], tan2 = [];

    		for ( let i = 0; i < nVertices; i ++ ) {

    			tan1[ i ] = new Vector3();
    			tan2[ i ] = new Vector3();

    		}

    		const vA = new Vector3(),
    			vB = new Vector3(),
    			vC = new Vector3(),

    			uvA = new Vector2(),
    			uvB = new Vector2(),
    			uvC = new Vector2(),

    			sdir = new Vector3(),
    			tdir = new Vector3();

    		function handleTriangle( a, b, c ) {

    			vA.fromArray( positions, a * 3 );
    			vB.fromArray( positions, b * 3 );
    			vC.fromArray( positions, c * 3 );

    			uvA.fromArray( uvs, a * 2 );
    			uvB.fromArray( uvs, b * 2 );
    			uvC.fromArray( uvs, c * 2 );

    			vB.sub( vA );
    			vC.sub( vA );

    			uvB.sub( uvA );
    			uvC.sub( uvA );

    			const r = 1.0 / ( uvB.x * uvC.y - uvC.x * uvB.y );

    			// silently ignore degenerate uv triangles having coincident or colinear vertices

    			if ( ! isFinite( r ) ) return;

    			sdir.copy( vB ).multiplyScalar( uvC.y ).addScaledVector( vC, - uvB.y ).multiplyScalar( r );
    			tdir.copy( vC ).multiplyScalar( uvB.x ).addScaledVector( vB, - uvC.x ).multiplyScalar( r );

    			tan1[ a ].add( sdir );
    			tan1[ b ].add( sdir );
    			tan1[ c ].add( sdir );

    			tan2[ a ].add( tdir );
    			tan2[ b ].add( tdir );
    			tan2[ c ].add( tdir );

    		}

    		let groups = this.groups;

    		if ( groups.length === 0 ) {

    			groups = [ {
    				start: 0,
    				count: indices.length
    			} ];

    		}

    		for ( let i = 0, il = groups.length; i < il; ++ i ) {

    			const group = groups[ i ];

    			const start = group.start;
    			const count = group.count;

    			for ( let j = start, jl = start + count; j < jl; j += 3 ) {

    				handleTriangle(
    					indices[ j + 0 ],
    					indices[ j + 1 ],
    					indices[ j + 2 ]
    				);

    			}

    		}

    		const tmp = new Vector3(), tmp2 = new Vector3();
    		const n = new Vector3(), n2 = new Vector3();

    		function handleVertex( v ) {

    			n.fromArray( normals, v * 3 );
    			n2.copy( n );

    			const t = tan1[ v ];

    			// Gram-Schmidt orthogonalize

    			tmp.copy( t );
    			tmp.sub( n.multiplyScalar( n.dot( t ) ) ).normalize();

    			// Calculate handedness

    			tmp2.crossVectors( n2, t );
    			const test = tmp2.dot( tan2[ v ] );
    			const w = ( test < 0.0 ) ? - 1.0 : 1.0;

    			tangents[ v * 4 ] = tmp.x;
    			tangents[ v * 4 + 1 ] = tmp.y;
    			tangents[ v * 4 + 2 ] = tmp.z;
    			tangents[ v * 4 + 3 ] = w;

    		}

    		for ( let i = 0, il = groups.length; i < il; ++ i ) {

    			const group = groups[ i ];

    			const start = group.start;
    			const count = group.count;

    			for ( let j = start, jl = start + count; j < jl; j += 3 ) {

    				handleVertex( indices[ j + 0 ] );
    				handleVertex( indices[ j + 1 ] );
    				handleVertex( indices[ j + 2 ] );

    			}

    		}

    	}

    	computeVertexNormals() {

    		const index = this.index;
    		const positionAttribute = this.getAttribute( 'position' );

    		if ( positionAttribute !== undefined ) {

    			let normalAttribute = this.getAttribute( 'normal' );

    			if ( normalAttribute === undefined ) {

    				normalAttribute = new BufferAttribute( new Float32Array( positionAttribute.count * 3 ), 3 );
    				this.setAttribute( 'normal', normalAttribute );

    			} else {

    				// reset existing normals to zero

    				for ( let i = 0, il = normalAttribute.count; i < il; i ++ ) {

    					normalAttribute.setXYZ( i, 0, 0, 0 );

    				}

    			}

    			const pA = new Vector3(), pB = new Vector3(), pC = new Vector3();
    			const nA = new Vector3(), nB = new Vector3(), nC = new Vector3();
    			const cb = new Vector3(), ab = new Vector3();

    			// indexed elements

    			if ( index ) {

    				for ( let i = 0, il = index.count; i < il; i += 3 ) {

    					const vA = index.getX( i + 0 );
    					const vB = index.getX( i + 1 );
    					const vC = index.getX( i + 2 );

    					pA.fromBufferAttribute( positionAttribute, vA );
    					pB.fromBufferAttribute( positionAttribute, vB );
    					pC.fromBufferAttribute( positionAttribute, vC );

    					cb.subVectors( pC, pB );
    					ab.subVectors( pA, pB );
    					cb.cross( ab );

    					nA.fromBufferAttribute( normalAttribute, vA );
    					nB.fromBufferAttribute( normalAttribute, vB );
    					nC.fromBufferAttribute( normalAttribute, vC );

    					nA.add( cb );
    					nB.add( cb );
    					nC.add( cb );

    					normalAttribute.setXYZ( vA, nA.x, nA.y, nA.z );
    					normalAttribute.setXYZ( vB, nB.x, nB.y, nB.z );
    					normalAttribute.setXYZ( vC, nC.x, nC.y, nC.z );

    				}

    			} else {

    				// non-indexed elements (unconnected triangle soup)

    				for ( let i = 0, il = positionAttribute.count; i < il; i += 3 ) {

    					pA.fromBufferAttribute( positionAttribute, i + 0 );
    					pB.fromBufferAttribute( positionAttribute, i + 1 );
    					pC.fromBufferAttribute( positionAttribute, i + 2 );

    					cb.subVectors( pC, pB );
    					ab.subVectors( pA, pB );
    					cb.cross( ab );

    					normalAttribute.setXYZ( i + 0, cb.x, cb.y, cb.z );
    					normalAttribute.setXYZ( i + 1, cb.x, cb.y, cb.z );
    					normalAttribute.setXYZ( i + 2, cb.x, cb.y, cb.z );

    				}

    			}

    			this.normalizeNormals();

    			normalAttribute.needsUpdate = true;

    		}

    	}

    	// @deprecated since r144

    	merge() {

    		console.error( 'THREE.BufferGeometry.merge() has been removed. Use THREE.BufferGeometryUtils.mergeBufferGeometries() instead.' );
    		return this;

    	}

    	normalizeNormals() {

    		const normals = this.attributes.normal;

    		for ( let i = 0, il = normals.count; i < il; i ++ ) {

    			_vector$8.fromBufferAttribute( normals, i );

    			_vector$8.normalize();

    			normals.setXYZ( i, _vector$8.x, _vector$8.y, _vector$8.z );

    		}

    	}

    	toNonIndexed() {

    		function convertBufferAttribute( attribute, indices ) {

    			const array = attribute.array;
    			const itemSize = attribute.itemSize;
    			const normalized = attribute.normalized;

    			const array2 = new array.constructor( indices.length * itemSize );

    			let index = 0, index2 = 0;

    			for ( let i = 0, l = indices.length; i < l; i ++ ) {

    				if ( attribute.isInterleavedBufferAttribute ) {

    					index = indices[ i ] * attribute.data.stride + attribute.offset;

    				} else {

    					index = indices[ i ] * itemSize;

    				}

    				for ( let j = 0; j < itemSize; j ++ ) {

    					array2[ index2 ++ ] = array[ index ++ ];

    				}

    			}

    			return new BufferAttribute( array2, itemSize, normalized );

    		}

    		//

    		if ( this.index === null ) {

    			console.warn( 'THREE.BufferGeometry.toNonIndexed(): BufferGeometry is already non-indexed.' );
    			return this;

    		}

    		const geometry2 = new BufferGeometry();

    		const indices = this.index.array;
    		const attributes = this.attributes;

    		// attributes

    		for ( const name in attributes ) {

    			const attribute = attributes[ name ];

    			const newAttribute = convertBufferAttribute( attribute, indices );

    			geometry2.setAttribute( name, newAttribute );

    		}

    		// morph attributes

    		const morphAttributes = this.morphAttributes;

    		for ( const name in morphAttributes ) {

    			const morphArray = [];
    			const morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes

    			for ( let i = 0, il = morphAttribute.length; i < il; i ++ ) {

    				const attribute = morphAttribute[ i ];

    				const newAttribute = convertBufferAttribute( attribute, indices );

    				morphArray.push( newAttribute );

    			}

    			geometry2.morphAttributes[ name ] = morphArray;

    		}

    		geometry2.morphTargetsRelative = this.morphTargetsRelative;

    		// groups

    		const groups = this.groups;

    		for ( let i = 0, l = groups.length; i < l; i ++ ) {

    			const group = groups[ i ];
    			geometry2.addGroup( group.start, group.count, group.materialIndex );

    		}

    		return geometry2;

    	}

    	toJSON() {

    		const data = {
    			metadata: {
    				version: 4.5,
    				type: 'BufferGeometry',
    				generator: 'BufferGeometry.toJSON'
    			}
    		};

    		// standard BufferGeometry serialization

    		data.uuid = this.uuid;
    		data.type = this.type;
    		if ( this.name !== '' ) data.name = this.name;
    		if ( Object.keys( this.userData ).length > 0 ) data.userData = this.userData;

    		if ( this.parameters !== undefined ) {

    			const parameters = this.parameters;

    			for ( const key in parameters ) {

    				if ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];

    			}

    			return data;

    		}

    		// for simplicity the code assumes attributes are not shared across geometries, see #15811

    		data.data = { attributes: {} };

    		const index = this.index;

    		if ( index !== null ) {

    			data.data.index = {
    				type: index.array.constructor.name,
    				array: Array.prototype.slice.call( index.array )
    			};

    		}

    		const attributes = this.attributes;

    		for ( const key in attributes ) {

    			const attribute = attributes[ key ];

    			data.data.attributes[ key ] = attribute.toJSON( data.data );

    		}

    		const morphAttributes = {};
    		let hasMorphAttributes = false;

    		for ( const key in this.morphAttributes ) {

    			const attributeArray = this.morphAttributes[ key ];

    			const array = [];

    			for ( let i = 0, il = attributeArray.length; i < il; i ++ ) {

    				const attribute = attributeArray[ i ];

    				array.push( attribute.toJSON( data.data ) );

    			}

    			if ( array.length > 0 ) {

    				morphAttributes[ key ] = array;

    				hasMorphAttributes = true;

    			}

    		}

    		if ( hasMorphAttributes ) {

    			data.data.morphAttributes = morphAttributes;
    			data.data.morphTargetsRelative = this.morphTargetsRelative;

    		}

    		const groups = this.groups;

    		if ( groups.length > 0 ) {

    			data.data.groups = JSON.parse( JSON.stringify( groups ) );

    		}

    		const boundingSphere = this.boundingSphere;

    		if ( boundingSphere !== null ) {

    			data.data.boundingSphere = {
    				center: boundingSphere.center.toArray(),
    				radius: boundingSphere.radius
    			};

    		}

    		return data;

    	}

    	clone() {

    		 return new this.constructor().copy( this );

    	}

    	copy( source ) {

    		// reset

    		this.index = null;
    		this.attributes = {};
    		this.morphAttributes = {};
    		this.groups = [];
    		this.boundingBox = null;
    		this.boundingSphere = null;

    		// used for storing cloned, shared data

    		const data = {};

    		// name

    		this.name = source.name;

    		// index

    		const index = source.index;

    		if ( index !== null ) {

    			this.setIndex( index.clone( data ) );

    		}

    		// attributes

    		const attributes = source.attributes;

    		for ( const name in attributes ) {

    			const attribute = attributes[ name ];
    			this.setAttribute( name, attribute.clone( data ) );

    		}

    		// morph attributes

    		const morphAttributes = source.morphAttributes;

    		for ( const name in morphAttributes ) {

    			const array = [];
    			const morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes

    			for ( let i = 0, l = morphAttribute.length; i < l; i ++ ) {

    				array.push( morphAttribute[ i ].clone( data ) );

    			}

    			this.morphAttributes[ name ] = array;

    		}

    		this.morphTargetsRelative = source.morphTargetsRelative;

    		// groups

    		const groups = source.groups;

    		for ( let i = 0, l = groups.length; i < l; i ++ ) {

    			const group = groups[ i ];
    			this.addGroup( group.start, group.count, group.materialIndex );

    		}

    		// bounding box

    		const boundingBox = source.boundingBox;

    		if ( boundingBox !== null ) {

    			this.boundingBox = boundingBox.clone();

    		}

    		// bounding sphere

    		const boundingSphere = source.boundingSphere;

    		if ( boundingSphere !== null ) {

    			this.boundingSphere = boundingSphere.clone();

    		}

    		// draw range

    		this.drawRange.start = source.drawRange.start;
    		this.drawRange.count = source.drawRange.count;

    		// user data

    		this.userData = source.userData;

    		// geometry generator parameters

    		if ( source.parameters !== undefined ) this.parameters = Object.assign( {}, source.parameters );

    		return this;

    	}

    	dispose() {

    		this.dispatchEvent( { type: 'dispose' } );

    	}

    }

    const _inverseMatrix$2 = /*@__PURE__*/ new Matrix4();
    const _ray$2 = /*@__PURE__*/ new Ray();
    const _sphere$3 = /*@__PURE__*/ new Sphere();

    const _vA$1 = /*@__PURE__*/ new Vector3();
    const _vB$1 = /*@__PURE__*/ new Vector3();
    const _vC$1 = /*@__PURE__*/ new Vector3();

    const _tempA = /*@__PURE__*/ new Vector3();
    const _tempB = /*@__PURE__*/ new Vector3();
    const _tempC = /*@__PURE__*/ new Vector3();

    const _morphA = /*@__PURE__*/ new Vector3();
    const _morphB = /*@__PURE__*/ new Vector3();
    const _morphC = /*@__PURE__*/ new Vector3();

    const _uvA$1 = /*@__PURE__*/ new Vector2();
    const _uvB$1 = /*@__PURE__*/ new Vector2();
    const _uvC$1 = /*@__PURE__*/ new Vector2();

    const _intersectionPoint = /*@__PURE__*/ new Vector3();
    const _intersectionPointWorld = /*@__PURE__*/ new Vector3();

    class Mesh extends Object3D {

    	constructor( geometry = new BufferGeometry(), material = new MeshBasicMaterial() ) {

    		super();

    		this.isMesh = true;

    		this.type = 'Mesh';

    		this.geometry = geometry;
    		this.material = material;

    		this.updateMorphTargets();

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		if ( source.morphTargetInfluences !== undefined ) {

    			this.morphTargetInfluences = source.morphTargetInfluences.slice();

    		}

    		if ( source.morphTargetDictionary !== undefined ) {

    			this.morphTargetDictionary = Object.assign( {}, source.morphTargetDictionary );

    		}

    		this.material = source.material;
    		this.geometry = source.geometry;

    		return this;

    	}

    	updateMorphTargets() {

    		const geometry = this.geometry;

    		const morphAttributes = geometry.morphAttributes;
    		const keys = Object.keys( morphAttributes );

    		if ( keys.length > 0 ) {

    			const morphAttribute = morphAttributes[ keys[ 0 ] ];

    			if ( morphAttribute !== undefined ) {

    				this.morphTargetInfluences = [];
    				this.morphTargetDictionary = {};

    				for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {

    					const name = morphAttribute[ m ].name || String( m );

    					this.morphTargetInfluences.push( 0 );
    					this.morphTargetDictionary[ name ] = m;

    				}

    			}

    		}

    	}

    	raycast( raycaster, intersects ) {

    		const geometry = this.geometry;
    		const material = this.material;
    		const matrixWorld = this.matrixWorld;

    		if ( material === undefined ) return;

    		// Checking boundingSphere distance to ray

    		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

    		_sphere$3.copy( geometry.boundingSphere );
    		_sphere$3.applyMatrix4( matrixWorld );

    		if ( raycaster.ray.intersectsSphere( _sphere$3 ) === false ) return;

    		//

    		_inverseMatrix$2.copy( matrixWorld ).invert();
    		_ray$2.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$2 );

    		// Check boundingBox before continuing

    		if ( geometry.boundingBox !== null ) {

    			if ( _ray$2.intersectsBox( geometry.boundingBox ) === false ) return;

    		}

    		let intersection;

    		const index = geometry.index;
    		const position = geometry.attributes.position;
    		const morphPosition = geometry.morphAttributes.position;
    		const morphTargetsRelative = geometry.morphTargetsRelative;
    		const uv = geometry.attributes.uv;
    		const uv2 = geometry.attributes.uv2;
    		const groups = geometry.groups;
    		const drawRange = geometry.drawRange;

    		if ( index !== null ) {

    			// indexed buffer geometry

    			if ( Array.isArray( material ) ) {

    				for ( let i = 0, il = groups.length; i < il; i ++ ) {

    					const group = groups[ i ];
    					const groupMaterial = material[ group.materialIndex ];

    					const start = Math.max( group.start, drawRange.start );
    					const end = Math.min( index.count, Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) ) );

    					for ( let j = start, jl = end; j < jl; j += 3 ) {

    						const a = index.getX( j );
    						const b = index.getX( j + 1 );
    						const c = index.getX( j + 2 );

    						intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );

    						if ( intersection ) {

    							intersection.faceIndex = Math.floor( j / 3 ); // triangle number in indexed buffer semantics
    							intersection.face.materialIndex = group.materialIndex;
    							intersects.push( intersection );

    						}

    					}

    				}

    			} else {

    				const start = Math.max( 0, drawRange.start );
    				const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );

    				for ( let i = start, il = end; i < il; i += 3 ) {

    					const a = index.getX( i );
    					const b = index.getX( i + 1 );
    					const c = index.getX( i + 2 );

    					intersection = checkBufferGeometryIntersection( this, material, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );

    					if ( intersection ) {

    						intersection.faceIndex = Math.floor( i / 3 ); // triangle number in indexed buffer semantics
    						intersects.push( intersection );

    					}

    				}

    			}

    		} else if ( position !== undefined ) {

    			// non-indexed buffer geometry

    			if ( Array.isArray( material ) ) {

    				for ( let i = 0, il = groups.length; i < il; i ++ ) {

    					const group = groups[ i ];
    					const groupMaterial = material[ group.materialIndex ];

    					const start = Math.max( group.start, drawRange.start );
    					const end = Math.min( position.count, Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) ) );

    					for ( let j = start, jl = end; j < jl; j += 3 ) {

    						const a = j;
    						const b = j + 1;
    						const c = j + 2;

    						intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );

    						if ( intersection ) {

    							intersection.faceIndex = Math.floor( j / 3 ); // triangle number in non-indexed buffer semantics
    							intersection.face.materialIndex = group.materialIndex;
    							intersects.push( intersection );

    						}

    					}

    				}

    			} else {

    				const start = Math.max( 0, drawRange.start );
    				const end = Math.min( position.count, ( drawRange.start + drawRange.count ) );

    				for ( let i = start, il = end; i < il; i += 3 ) {

    					const a = i;
    					const b = i + 1;
    					const c = i + 2;

    					intersection = checkBufferGeometryIntersection( this, material, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );

    					if ( intersection ) {

    						intersection.faceIndex = Math.floor( i / 3 ); // triangle number in non-indexed buffer semantics
    						intersects.push( intersection );

    					}

    				}

    			}

    		}

    	}

    }

    function checkIntersection( object, material, raycaster, ray, pA, pB, pC, point ) {

    	let intersect;

    	if ( material.side === BackSide ) {

    		intersect = ray.intersectTriangle( pC, pB, pA, true, point );

    	} else {

    		intersect = ray.intersectTriangle( pA, pB, pC, material.side !== DoubleSide, point );

    	}

    	if ( intersect === null ) return null;

    	_intersectionPointWorld.copy( point );
    	_intersectionPointWorld.applyMatrix4( object.matrixWorld );

    	const distance = raycaster.ray.origin.distanceTo( _intersectionPointWorld );

    	if ( distance < raycaster.near || distance > raycaster.far ) return null;

    	return {
    		distance: distance,
    		point: _intersectionPointWorld.clone(),
    		object: object
    	};

    }

    function checkBufferGeometryIntersection( object, material, raycaster, ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c ) {

    	_vA$1.fromBufferAttribute( position, a );
    	_vB$1.fromBufferAttribute( position, b );
    	_vC$1.fromBufferAttribute( position, c );

    	const morphInfluences = object.morphTargetInfluences;

    	if ( morphPosition && morphInfluences ) {

    		_morphA.set( 0, 0, 0 );
    		_morphB.set( 0, 0, 0 );
    		_morphC.set( 0, 0, 0 );

    		for ( let i = 0, il = morphPosition.length; i < il; i ++ ) {

    			const influence = morphInfluences[ i ];
    			const morphAttribute = morphPosition[ i ];

    			if ( influence === 0 ) continue;

    			_tempA.fromBufferAttribute( morphAttribute, a );
    			_tempB.fromBufferAttribute( morphAttribute, b );
    			_tempC.fromBufferAttribute( morphAttribute, c );

    			if ( morphTargetsRelative ) {

    				_morphA.addScaledVector( _tempA, influence );
    				_morphB.addScaledVector( _tempB, influence );
    				_morphC.addScaledVector( _tempC, influence );

    			} else {

    				_morphA.addScaledVector( _tempA.sub( _vA$1 ), influence );
    				_morphB.addScaledVector( _tempB.sub( _vB$1 ), influence );
    				_morphC.addScaledVector( _tempC.sub( _vC$1 ), influence );

    			}

    		}

    		_vA$1.add( _morphA );
    		_vB$1.add( _morphB );
    		_vC$1.add( _morphC );

    	}

    	if ( object.isSkinnedMesh ) {

    		object.boneTransform( a, _vA$1 );
    		object.boneTransform( b, _vB$1 );
    		object.boneTransform( c, _vC$1 );

    	}

    	const intersection = checkIntersection( object, material, raycaster, ray, _vA$1, _vB$1, _vC$1, _intersectionPoint );

    	if ( intersection ) {

    		if ( uv ) {

    			_uvA$1.fromBufferAttribute( uv, a );
    			_uvB$1.fromBufferAttribute( uv, b );
    			_uvC$1.fromBufferAttribute( uv, c );

    			intersection.uv = Triangle.getUV( _intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() );

    		}

    		if ( uv2 ) {

    			_uvA$1.fromBufferAttribute( uv2, a );
    			_uvB$1.fromBufferAttribute( uv2, b );
    			_uvC$1.fromBufferAttribute( uv2, c );

    			intersection.uv2 = Triangle.getUV( _intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() );

    		}

    		const face = {
    			a: a,
    			b: b,
    			c: c,
    			normal: new Vector3(),
    			materialIndex: 0
    		};

    		Triangle.getNormal( _vA$1, _vB$1, _vC$1, face.normal );

    		intersection.face = face;

    	}

    	return intersection;

    }

    class BoxGeometry extends BufferGeometry {

    	constructor( width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1 ) {

    		super();

    		this.type = 'BoxGeometry';

    		this.parameters = {
    			width: width,
    			height: height,
    			depth: depth,
    			widthSegments: widthSegments,
    			heightSegments: heightSegments,
    			depthSegments: depthSegments
    		};

    		const scope = this;

    		// segments

    		widthSegments = Math.floor( widthSegments );
    		heightSegments = Math.floor( heightSegments );
    		depthSegments = Math.floor( depthSegments );

    		// buffers

    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];

    		// helper variables

    		let numberOfVertices = 0;
    		let groupStart = 0;

    		// build each side of the box geometry

    		buildPlane( 'z', 'y', 'x', - 1, - 1, depth, height, width, depthSegments, heightSegments, 0 ); // px
    		buildPlane( 'z', 'y', 'x', 1, - 1, depth, height, - width, depthSegments, heightSegments, 1 ); // nx
    		buildPlane( 'x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2 ); // py
    		buildPlane( 'x', 'z', 'y', 1, - 1, width, depth, - height, widthSegments, depthSegments, 3 ); // ny
    		buildPlane( 'x', 'y', 'z', 1, - 1, width, height, depth, widthSegments, heightSegments, 4 ); // pz
    		buildPlane( 'x', 'y', 'z', - 1, - 1, width, height, - depth, widthSegments, heightSegments, 5 ); // nz

    		// build geometry

    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

    		function buildPlane( u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex ) {

    			const segmentWidth = width / gridX;
    			const segmentHeight = height / gridY;

    			const widthHalf = width / 2;
    			const heightHalf = height / 2;
    			const depthHalf = depth / 2;

    			const gridX1 = gridX + 1;
    			const gridY1 = gridY + 1;

    			let vertexCounter = 0;
    			let groupCount = 0;

    			const vector = new Vector3();

    			// generate vertices, normals and uvs

    			for ( let iy = 0; iy < gridY1; iy ++ ) {

    				const y = iy * segmentHeight - heightHalf;

    				for ( let ix = 0; ix < gridX1; ix ++ ) {

    					const x = ix * segmentWidth - widthHalf;

    					// set values to correct vector component

    					vector[ u ] = x * udir;
    					vector[ v ] = y * vdir;
    					vector[ w ] = depthHalf;

    					// now apply vector to vertex buffer

    					vertices.push( vector.x, vector.y, vector.z );

    					// set values to correct vector component

    					vector[ u ] = 0;
    					vector[ v ] = 0;
    					vector[ w ] = depth > 0 ? 1 : - 1;

    					// now apply vector to normal buffer

    					normals.push( vector.x, vector.y, vector.z );

    					// uvs

    					uvs.push( ix / gridX );
    					uvs.push( 1 - ( iy / gridY ) );

    					// counters

    					vertexCounter += 1;

    				}

    			}

    			// indices

    			// 1. you need three indices to draw a single face
    			// 2. a single segment consists of two faces
    			// 3. so we need to generate six (2*3) indices per segment

    			for ( let iy = 0; iy < gridY; iy ++ ) {

    				for ( let ix = 0; ix < gridX; ix ++ ) {

    					const a = numberOfVertices + ix + gridX1 * iy;
    					const b = numberOfVertices + ix + gridX1 * ( iy + 1 );
    					const c = numberOfVertices + ( ix + 1 ) + gridX1 * ( iy + 1 );
    					const d = numberOfVertices + ( ix + 1 ) + gridX1 * iy;

    					// faces

    					indices.push( a, b, d );
    					indices.push( b, c, d );

    					// increase counter

    					groupCount += 6;

    				}

    			}

    			// add a group to the geometry. this will ensure multi material support

    			scope.addGroup( groupStart, groupCount, materialIndex );

    			// calculate new start value for groups

    			groupStart += groupCount;

    			// update total number of vertices

    			numberOfVertices += vertexCounter;

    		}

    	}

    	static fromJSON( data ) {

    		return new BoxGeometry( data.width, data.height, data.depth, data.widthSegments, data.heightSegments, data.depthSegments );

    	}

    }

    /**
     * Uniform Utilities
     */

    function cloneUniforms( src ) {

    	const dst = {};

    	for ( const u in src ) {

    		dst[ u ] = {};

    		for ( const p in src[ u ] ) {

    			const property = src[ u ][ p ];

    			if ( property && ( property.isColor ||
    				property.isMatrix3 || property.isMatrix4 ||
    				property.isVector2 || property.isVector3 || property.isVector4 ||
    				property.isTexture || property.isQuaternion ) ) {

    				dst[ u ][ p ] = property.clone();

    			} else if ( Array.isArray( property ) ) {

    				dst[ u ][ p ] = property.slice();

    			} else {

    				dst[ u ][ p ] = property;

    			}

    		}

    	}

    	return dst;

    }

    function mergeUniforms( uniforms ) {

    	const merged = {};

    	for ( let u = 0; u < uniforms.length; u ++ ) {

    		const tmp = cloneUniforms( uniforms[ u ] );

    		for ( const p in tmp ) {

    			merged[ p ] = tmp[ p ];

    		}

    	}

    	return merged;

    }

    function cloneUniformsGroups( src ) {

    	const dst = [];

    	for ( let u = 0; u < src.length; u ++ ) {

    		dst.push( src[ u ].clone() );

    	}

    	return dst;

    }

    // Legacy

    const UniformsUtils = { clone: cloneUniforms, merge: mergeUniforms };

    var default_vertex = "void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}";

    var default_fragment = "void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}";

    class ShaderMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isShaderMaterial = true;

    		this.type = 'ShaderMaterial';

    		this.defines = {};
    		this.uniforms = {};
    		this.uniformsGroups = [];

    		this.vertexShader = default_vertex;
    		this.fragmentShader = default_fragment;

    		this.linewidth = 1;

    		this.wireframe = false;
    		this.wireframeLinewidth = 1;

    		this.fog = false; // set to use scene fog
    		this.lights = false; // set to use scene lights
    		this.clipping = false; // set to use user-defined clipping planes

    		this.extensions = {
    			derivatives: false, // set to use derivatives
    			fragDepth: false, // set to use fragment depth values
    			drawBuffers: false, // set to use draw buffers
    			shaderTextureLOD: false // set to use shader texture LOD
    		};

    		// When rendered geometry doesn't include these attributes but the material does,
    		// use these default values in WebGL. This avoids errors when buffer data is missing.
    		this.defaultAttributeValues = {
    			'color': [ 1, 1, 1 ],
    			'uv': [ 0, 0 ],
    			'uv2': [ 0, 0 ]
    		};

    		this.index0AttributeName = undefined;
    		this.uniformsNeedUpdate = false;

    		this.glslVersion = null;

    		if ( parameters !== undefined ) {

    			this.setValues( parameters );

    		}

    	}

    	copy( source ) {

    		super.copy( source );

    		this.fragmentShader = source.fragmentShader;
    		this.vertexShader = source.vertexShader;

    		this.uniforms = cloneUniforms( source.uniforms );
    		this.uniformsGroups = cloneUniformsGroups( source.uniformsGroups );

    		this.defines = Object.assign( {}, source.defines );

    		this.wireframe = source.wireframe;
    		this.wireframeLinewidth = source.wireframeLinewidth;

    		this.fog = source.fog;
    		this.lights = source.lights;
    		this.clipping = source.clipping;

    		this.extensions = Object.assign( {}, source.extensions );

    		this.glslVersion = source.glslVersion;

    		return this;

    	}

    	toJSON( meta ) {

    		const data = super.toJSON( meta );

    		data.glslVersion = this.glslVersion;
    		data.uniforms = {};

    		for ( const name in this.uniforms ) {

    			const uniform = this.uniforms[ name ];
    			const value = uniform.value;

    			if ( value && value.isTexture ) {

    				data.uniforms[ name ] = {
    					type: 't',
    					value: value.toJSON( meta ).uuid
    				};

    			} else if ( value && value.isColor ) {

    				data.uniforms[ name ] = {
    					type: 'c',
    					value: value.getHex()
    				};

    			} else if ( value && value.isVector2 ) {

    				data.uniforms[ name ] = {
    					type: 'v2',
    					value: value.toArray()
    				};

    			} else if ( value && value.isVector3 ) {

    				data.uniforms[ name ] = {
    					type: 'v3',
    					value: value.toArray()
    				};

    			} else if ( value && value.isVector4 ) {

    				data.uniforms[ name ] = {
    					type: 'v4',
    					value: value.toArray()
    				};

    			} else if ( value && value.isMatrix3 ) {

    				data.uniforms[ name ] = {
    					type: 'm3',
    					value: value.toArray()
    				};

    			} else if ( value && value.isMatrix4 ) {

    				data.uniforms[ name ] = {
    					type: 'm4',
    					value: value.toArray()
    				};

    			} else {

    				data.uniforms[ name ] = {
    					value: value
    				};

    				// note: the array variants v2v, v3v, v4v, m4v and tv are not supported so far

    			}

    		}

    		if ( Object.keys( this.defines ).length > 0 ) data.defines = this.defines;

    		data.vertexShader = this.vertexShader;
    		data.fragmentShader = this.fragmentShader;

    		const extensions = {};

    		for ( const key in this.extensions ) {

    			if ( this.extensions[ key ] === true ) extensions[ key ] = true;

    		}

    		if ( Object.keys( extensions ).length > 0 ) data.extensions = extensions;

    		return data;

    	}

    }

    class Camera extends Object3D {

    	constructor() {

    		super();

    		this.isCamera = true;

    		this.type = 'Camera';

    		this.matrixWorldInverse = new Matrix4();

    		this.projectionMatrix = new Matrix4();
    		this.projectionMatrixInverse = new Matrix4();

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		this.matrixWorldInverse.copy( source.matrixWorldInverse );

    		this.projectionMatrix.copy( source.projectionMatrix );
    		this.projectionMatrixInverse.copy( source.projectionMatrixInverse );

    		return this;

    	}

    	getWorldDirection( target ) {

    		this.updateWorldMatrix( true, false );

    		const e = this.matrixWorld.elements;

    		return target.set( - e[ 8 ], - e[ 9 ], - e[ 10 ] ).normalize();

    	}

    	updateMatrixWorld( force ) {

    		super.updateMatrixWorld( force );

    		this.matrixWorldInverse.copy( this.matrixWorld ).invert();

    	}

    	updateWorldMatrix( updateParents, updateChildren ) {

    		super.updateWorldMatrix( updateParents, updateChildren );

    		this.matrixWorldInverse.copy( this.matrixWorld ).invert();

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    }

    class PerspectiveCamera extends Camera {

    	constructor( fov = 50, aspect = 1, near = 0.1, far = 2000 ) {

    		super();

    		this.isPerspectiveCamera = true;

    		this.type = 'PerspectiveCamera';

    		this.fov = fov;
    		this.zoom = 1;

    		this.near = near;
    		this.far = far;
    		this.focus = 10;

    		this.aspect = aspect;
    		this.view = null;

    		this.filmGauge = 35;	// width of the film (default in millimeters)
    		this.filmOffset = 0;	// horizontal film offset (same unit as gauge)

    		this.updateProjectionMatrix();

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		this.fov = source.fov;
    		this.zoom = source.zoom;

    		this.near = source.near;
    		this.far = source.far;
    		this.focus = source.focus;

    		this.aspect = source.aspect;
    		this.view = source.view === null ? null : Object.assign( {}, source.view );

    		this.filmGauge = source.filmGauge;
    		this.filmOffset = source.filmOffset;

    		return this;

    	}

    	/**
    	 * Sets the FOV by focal length in respect to the current .filmGauge.
    	 *
    	 * The default film gauge is 35, so that the focal length can be specified for
    	 * a 35mm (full frame) camera.
    	 *
    	 * Values for focal length and film gauge must have the same unit.
    	 */
    	setFocalLength( focalLength ) {

    		/** see {@link http://www.bobatkins.com/photography/technical/field_of_view.html} */
    		const vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;

    		this.fov = RAD2DEG * 2 * Math.atan( vExtentSlope );
    		this.updateProjectionMatrix();

    	}

    	/**
    	 * Calculates the focal length from the current .fov and .filmGauge.
    	 */
    	getFocalLength() {

    		const vExtentSlope = Math.tan( DEG2RAD * 0.5 * this.fov );

    		return 0.5 * this.getFilmHeight() / vExtentSlope;

    	}

    	getEffectiveFOV() {

    		return RAD2DEG * 2 * Math.atan(
    			Math.tan( DEG2RAD * 0.5 * this.fov ) / this.zoom );

    	}

    	getFilmWidth() {

    		// film not completely covered in portrait format (aspect < 1)
    		return this.filmGauge * Math.min( this.aspect, 1 );

    	}

    	getFilmHeight() {

    		// film not completely covered in landscape format (aspect > 1)
    		return this.filmGauge / Math.max( this.aspect, 1 );

    	}

    	/**
    	 * Sets an offset in a larger frustum. This is useful for multi-window or
    	 * multi-monitor/multi-machine setups.
    	 *
    	 * For example, if you have 3x2 monitors and each monitor is 1920x1080 and
    	 * the monitors are in grid like this
    	 *
    	 *   +---+---+---+
    	 *   | A | B | C |
    	 *   +---+---+---+
    	 *   | D | E | F |
    	 *   +---+---+---+
    	 *
    	 * then for each monitor you would call it like this
    	 *
    	 *   const w = 1920;
    	 *   const h = 1080;
    	 *   const fullWidth = w * 3;
    	 *   const fullHeight = h * 2;
    	 *
    	 *   --A--
    	 *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );
    	 *   --B--
    	 *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );
    	 *   --C--
    	 *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );
    	 *   --D--
    	 *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );
    	 *   --E--
    	 *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );
    	 *   --F--
    	 *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );
    	 *
    	 *   Note there is no reason monitors have to be the same size or in a grid.
    	 */
    	setViewOffset( fullWidth, fullHeight, x, y, width, height ) {

    		this.aspect = fullWidth / fullHeight;

    		if ( this.view === null ) {

    			this.view = {
    				enabled: true,
    				fullWidth: 1,
    				fullHeight: 1,
    				offsetX: 0,
    				offsetY: 0,
    				width: 1,
    				height: 1
    			};

    		}

    		this.view.enabled = true;
    		this.view.fullWidth = fullWidth;
    		this.view.fullHeight = fullHeight;
    		this.view.offsetX = x;
    		this.view.offsetY = y;
    		this.view.width = width;
    		this.view.height = height;

    		this.updateProjectionMatrix();

    	}

    	clearViewOffset() {

    		if ( this.view !== null ) {

    			this.view.enabled = false;

    		}

    		this.updateProjectionMatrix();

    	}

    	updateProjectionMatrix() {

    		const near = this.near;
    		let top = near * Math.tan( DEG2RAD * 0.5 * this.fov ) / this.zoom;
    		let height = 2 * top;
    		let width = this.aspect * height;
    		let left = - 0.5 * width;
    		const view = this.view;

    		if ( this.view !== null && this.view.enabled ) {

    			const fullWidth = view.fullWidth,
    				fullHeight = view.fullHeight;

    			left += view.offsetX * width / fullWidth;
    			top -= view.offsetY * height / fullHeight;
    			width *= view.width / fullWidth;
    			height *= view.height / fullHeight;

    		}

    		const skew = this.filmOffset;
    		if ( skew !== 0 ) left += near * skew / this.getFilmWidth();

    		this.projectionMatrix.makePerspective( left, left + width, top, top - height, near, this.far );

    		this.projectionMatrixInverse.copy( this.projectionMatrix ).invert();

    	}

    	toJSON( meta ) {

    		const data = super.toJSON( meta );

    		data.object.fov = this.fov;
    		data.object.zoom = this.zoom;

    		data.object.near = this.near;
    		data.object.far = this.far;
    		data.object.focus = this.focus;

    		data.object.aspect = this.aspect;

    		if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );

    		data.object.filmGauge = this.filmGauge;
    		data.object.filmOffset = this.filmOffset;

    		return data;

    	}

    }

    const fov = 90, aspect = 1;

    class CubeCamera extends Object3D {

    	constructor( near, far, renderTarget ) {

    		super();

    		this.type = 'CubeCamera';

    		this.renderTarget = renderTarget;

    		const cameraPX = new PerspectiveCamera( fov, aspect, near, far );
    		cameraPX.layers = this.layers;
    		cameraPX.up.set( 0, - 1, 0 );
    		cameraPX.lookAt( new Vector3( 1, 0, 0 ) );
    		this.add( cameraPX );

    		const cameraNX = new PerspectiveCamera( fov, aspect, near, far );
    		cameraNX.layers = this.layers;
    		cameraNX.up.set( 0, - 1, 0 );
    		cameraNX.lookAt( new Vector3( - 1, 0, 0 ) );
    		this.add( cameraNX );

    		const cameraPY = new PerspectiveCamera( fov, aspect, near, far );
    		cameraPY.layers = this.layers;
    		cameraPY.up.set( 0, 0, 1 );
    		cameraPY.lookAt( new Vector3( 0, 1, 0 ) );
    		this.add( cameraPY );

    		const cameraNY = new PerspectiveCamera( fov, aspect, near, far );
    		cameraNY.layers = this.layers;
    		cameraNY.up.set( 0, 0, - 1 );
    		cameraNY.lookAt( new Vector3( 0, - 1, 0 ) );
    		this.add( cameraNY );

    		const cameraPZ = new PerspectiveCamera( fov, aspect, near, far );
    		cameraPZ.layers = this.layers;
    		cameraPZ.up.set( 0, - 1, 0 );
    		cameraPZ.lookAt( new Vector3( 0, 0, 1 ) );
    		this.add( cameraPZ );

    		const cameraNZ = new PerspectiveCamera( fov, aspect, near, far );
    		cameraNZ.layers = this.layers;
    		cameraNZ.up.set( 0, - 1, 0 );
    		cameraNZ.lookAt( new Vector3( 0, 0, - 1 ) );
    		this.add( cameraNZ );

    	}

    	update( renderer, scene ) {

    		if ( this.parent === null ) this.updateMatrixWorld();

    		const renderTarget = this.renderTarget;

    		const [ cameraPX, cameraNX, cameraPY, cameraNY, cameraPZ, cameraNZ ] = this.children;

    		const currentRenderTarget = renderer.getRenderTarget();

    		const currentToneMapping = renderer.toneMapping;
    		const currentXrEnabled = renderer.xr.enabled;

    		renderer.toneMapping = NoToneMapping;
    		renderer.xr.enabled = false;

    		const generateMipmaps = renderTarget.texture.generateMipmaps;

    		renderTarget.texture.generateMipmaps = false;

    		renderer.setRenderTarget( renderTarget, 0 );
    		renderer.render( scene, cameraPX );

    		renderer.setRenderTarget( renderTarget, 1 );
    		renderer.render( scene, cameraNX );

    		renderer.setRenderTarget( renderTarget, 2 );
    		renderer.render( scene, cameraPY );

    		renderer.setRenderTarget( renderTarget, 3 );
    		renderer.render( scene, cameraNY );

    		renderer.setRenderTarget( renderTarget, 4 );
    		renderer.render( scene, cameraPZ );

    		renderTarget.texture.generateMipmaps = generateMipmaps;

    		renderer.setRenderTarget( renderTarget, 5 );
    		renderer.render( scene, cameraNZ );

    		renderer.setRenderTarget( currentRenderTarget );

    		renderer.toneMapping = currentToneMapping;
    		renderer.xr.enabled = currentXrEnabled;

    		renderTarget.texture.needsPMREMUpdate = true;

    	}

    }

    class CubeTexture extends Texture {

    	constructor( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {

    		images = images !== undefined ? images : [];
    		mapping = mapping !== undefined ? mapping : CubeReflectionMapping;

    		super( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );

    		this.isCubeTexture = true;

    		this.flipY = false;

    	}

    	get images() {

    		return this.image;

    	}

    	set images( value ) {

    		this.image = value;

    	}

    }

    class WebGLCubeRenderTarget extends WebGLRenderTarget {

    	constructor( size, options = {} ) {

    		super( size, size, options );

    		this.isWebGLCubeRenderTarget = true;

    		const image = { width: size, height: size, depth: 1 };
    		const images = [ image, image, image, image, image, image ];

    		this.texture = new CubeTexture( images, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );

    		// By convention -- likely based on the RenderMan spec from the 1990's -- cube maps are specified by WebGL (and three.js)
    		// in a coordinate system in which positive-x is to the right when looking up the positive-z axis -- in other words,
    		// in a left-handed coordinate system. By continuing this convention, preexisting cube maps continued to render correctly.

    		// three.js uses a right-handed coordinate system. So environment maps used in three.js appear to have px and nx swapped
    		// and the flag isRenderTargetTexture controls this conversion. The flip is not required when using WebGLCubeRenderTarget.texture
    		// as a cube texture (this is detected when isRenderTargetTexture is set to true for cube textures).

    		this.texture.isRenderTargetTexture = true;

    		this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
    		this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;

    	}

    	fromEquirectangularTexture( renderer, texture ) {

    		this.texture.type = texture.type;
    		this.texture.encoding = texture.encoding;

    		this.texture.generateMipmaps = texture.generateMipmaps;
    		this.texture.minFilter = texture.minFilter;
    		this.texture.magFilter = texture.magFilter;

    		const shader = {

    			uniforms: {
    				tEquirect: { value: null },
    			},

    			vertexShader: /* glsl */`

				varying vec3 vWorldDirection;

				vec3 transformDirection( in vec3 dir, in mat4 matrix ) {

					return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );

				}

				void main() {

					vWorldDirection = transformDirection( position, modelMatrix );

					#include <begin_vertex>
					#include <project_vertex>

				}
			`,

    			fragmentShader: /* glsl */`

				uniform sampler2D tEquirect;

				varying vec3 vWorldDirection;

				#include <common>

				void main() {

					vec3 direction = normalize( vWorldDirection );

					vec2 sampleUV = equirectUv( direction );

					gl_FragColor = texture2D( tEquirect, sampleUV );

				}
			`
    		};

    		const geometry = new BoxGeometry( 5, 5, 5 );

    		const material = new ShaderMaterial( {

    			name: 'CubemapFromEquirect',

    			uniforms: cloneUniforms( shader.uniforms ),
    			vertexShader: shader.vertexShader,
    			fragmentShader: shader.fragmentShader,
    			side: BackSide,
    			blending: NoBlending

    		} );

    		material.uniforms.tEquirect.value = texture;

    		const mesh = new Mesh( geometry, material );

    		const currentMinFilter = texture.minFilter;

    		// Avoid blurred poles
    		if ( texture.minFilter === LinearMipmapLinearFilter ) texture.minFilter = LinearFilter;

    		const camera = new CubeCamera( 1, 10, this );
    		camera.update( renderer, mesh );

    		texture.minFilter = currentMinFilter;

    		mesh.geometry.dispose();
    		mesh.material.dispose();

    		return this;

    	}

    	clear( renderer, color, depth, stencil ) {

    		const currentRenderTarget = renderer.getRenderTarget();

    		for ( let i = 0; i < 6; i ++ ) {

    			renderer.setRenderTarget( this, i );

    			renderer.clear( color, depth, stencil );

    		}

    		renderer.setRenderTarget( currentRenderTarget );

    	}

    }

    const _vector1 = /*@__PURE__*/ new Vector3();
    const _vector2 = /*@__PURE__*/ new Vector3();
    const _normalMatrix = /*@__PURE__*/ new Matrix3();

    class Plane {

    	constructor( normal = new Vector3( 1, 0, 0 ), constant = 0 ) {

    		this.isPlane = true;

    		// normal is assumed to be normalized

    		this.normal = normal;
    		this.constant = constant;

    	}

    	set( normal, constant ) {

    		this.normal.copy( normal );
    		this.constant = constant;

    		return this;

    	}

    	setComponents( x, y, z, w ) {

    		this.normal.set( x, y, z );
    		this.constant = w;

    		return this;

    	}

    	setFromNormalAndCoplanarPoint( normal, point ) {

    		this.normal.copy( normal );
    		this.constant = - point.dot( this.normal );

    		return this;

    	}

    	setFromCoplanarPoints( a, b, c ) {

    		const normal = _vector1.subVectors( c, b ).cross( _vector2.subVectors( a, b ) ).normalize();

    		// Q: should an error be thrown if normal is zero (e.g. degenerate plane)?

    		this.setFromNormalAndCoplanarPoint( normal, a );

    		return this;

    	}

    	copy( plane ) {

    		this.normal.copy( plane.normal );
    		this.constant = plane.constant;

    		return this;

    	}

    	normalize() {

    		// Note: will lead to a divide by zero if the plane is invalid.

    		const inverseNormalLength = 1.0 / this.normal.length();
    		this.normal.multiplyScalar( inverseNormalLength );
    		this.constant *= inverseNormalLength;

    		return this;

    	}

    	negate() {

    		this.constant *= - 1;
    		this.normal.negate();

    		return this;

    	}

    	distanceToPoint( point ) {

    		return this.normal.dot( point ) + this.constant;

    	}

    	distanceToSphere( sphere ) {

    		return this.distanceToPoint( sphere.center ) - sphere.radius;

    	}

    	projectPoint( point, target ) {

    		return target.copy( this.normal ).multiplyScalar( - this.distanceToPoint( point ) ).add( point );

    	}

    	intersectLine( line, target ) {

    		const direction = line.delta( _vector1 );

    		const denominator = this.normal.dot( direction );

    		if ( denominator === 0 ) {

    			// line is coplanar, return origin
    			if ( this.distanceToPoint( line.start ) === 0 ) {

    				return target.copy( line.start );

    			}

    			// Unsure if this is the correct method to handle this case.
    			return null;

    		}

    		const t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;

    		if ( t < 0 || t > 1 ) {

    			return null;

    		}

    		return target.copy( direction ).multiplyScalar( t ).add( line.start );

    	}

    	intersectsLine( line ) {

    		// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.

    		const startSign = this.distanceToPoint( line.start );
    		const endSign = this.distanceToPoint( line.end );

    		return ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );

    	}

    	intersectsBox( box ) {

    		return box.intersectsPlane( this );

    	}

    	intersectsSphere( sphere ) {

    		return sphere.intersectsPlane( this );

    	}

    	coplanarPoint( target ) {

    		return target.copy( this.normal ).multiplyScalar( - this.constant );

    	}

    	applyMatrix4( matrix, optionalNormalMatrix ) {

    		const normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix( matrix );

    		const referencePoint = this.coplanarPoint( _vector1 ).applyMatrix4( matrix );

    		const normal = this.normal.applyMatrix3( normalMatrix ).normalize();

    		this.constant = - referencePoint.dot( normal );

    		return this;

    	}

    	translate( offset ) {

    		this.constant -= offset.dot( this.normal );

    		return this;

    	}

    	equals( plane ) {

    		return plane.normal.equals( this.normal ) && ( plane.constant === this.constant );

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    }

    const _sphere$2 = /*@__PURE__*/ new Sphere();
    const _vector$7 = /*@__PURE__*/ new Vector3();

    class Frustum {

    	constructor( p0 = new Plane(), p1 = new Plane(), p2 = new Plane(), p3 = new Plane(), p4 = new Plane(), p5 = new Plane() ) {

    		this.planes = [ p0, p1, p2, p3, p4, p5 ];

    	}

    	set( p0, p1, p2, p3, p4, p5 ) {

    		const planes = this.planes;

    		planes[ 0 ].copy( p0 );
    		planes[ 1 ].copy( p1 );
    		planes[ 2 ].copy( p2 );
    		planes[ 3 ].copy( p3 );
    		planes[ 4 ].copy( p4 );
    		planes[ 5 ].copy( p5 );

    		return this;

    	}

    	copy( frustum ) {

    		const planes = this.planes;

    		for ( let i = 0; i < 6; i ++ ) {

    			planes[ i ].copy( frustum.planes[ i ] );

    		}

    		return this;

    	}

    	setFromProjectionMatrix( m ) {

    		const planes = this.planes;
    		const me = m.elements;
    		const me0 = me[ 0 ], me1 = me[ 1 ], me2 = me[ 2 ], me3 = me[ 3 ];
    		const me4 = me[ 4 ], me5 = me[ 5 ], me6 = me[ 6 ], me7 = me[ 7 ];
    		const me8 = me[ 8 ], me9 = me[ 9 ], me10 = me[ 10 ], me11 = me[ 11 ];
    		const me12 = me[ 12 ], me13 = me[ 13 ], me14 = me[ 14 ], me15 = me[ 15 ];

    		planes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();
    		planes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();
    		planes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();
    		planes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();
    		planes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();
    		planes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();

    		return this;

    	}

    	intersectsObject( object ) {

    		const geometry = object.geometry;

    		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

    		_sphere$2.copy( geometry.boundingSphere ).applyMatrix4( object.matrixWorld );

    		return this.intersectsSphere( _sphere$2 );

    	}

    	intersectsSprite( sprite ) {

    		_sphere$2.center.set( 0, 0, 0 );
    		_sphere$2.radius = 0.7071067811865476;
    		_sphere$2.applyMatrix4( sprite.matrixWorld );

    		return this.intersectsSphere( _sphere$2 );

    	}

    	intersectsSphere( sphere ) {

    		const planes = this.planes;
    		const center = sphere.center;
    		const negRadius = - sphere.radius;

    		for ( let i = 0; i < 6; i ++ ) {

    			const distance = planes[ i ].distanceToPoint( center );

    			if ( distance < negRadius ) {

    				return false;

    			}

    		}

    		return true;

    	}

    	intersectsBox( box ) {

    		const planes = this.planes;

    		for ( let i = 0; i < 6; i ++ ) {

    			const plane = planes[ i ];

    			// corner at max distance

    			_vector$7.x = plane.normal.x > 0 ? box.max.x : box.min.x;
    			_vector$7.y = plane.normal.y > 0 ? box.max.y : box.min.y;
    			_vector$7.z = plane.normal.z > 0 ? box.max.z : box.min.z;

    			if ( plane.distanceToPoint( _vector$7 ) < 0 ) {

    				return false;

    			}

    		}

    		return true;

    	}

    	containsPoint( point ) {

    		const planes = this.planes;

    		for ( let i = 0; i < 6; i ++ ) {

    			if ( planes[ i ].distanceToPoint( point ) < 0 ) {

    				return false;

    			}

    		}

    		return true;

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    }

    function WebGLAnimation() {

    	let context = null;
    	let isAnimating = false;
    	let animationLoop = null;
    	let requestId = null;

    	function onAnimationFrame( time, frame ) {

    		animationLoop( time, frame );

    		requestId = context.requestAnimationFrame( onAnimationFrame );

    	}

    	return {

    		start: function () {

    			if ( isAnimating === true ) return;
    			if ( animationLoop === null ) return;

    			requestId = context.requestAnimationFrame( onAnimationFrame );

    			isAnimating = true;

    		},

    		stop: function () {

    			context.cancelAnimationFrame( requestId );

    			isAnimating = false;

    		},

    		setAnimationLoop: function ( callback ) {

    			animationLoop = callback;

    		},

    		setContext: function ( value ) {

    			context = value;

    		}

    	};

    }

    function WebGLAttributes( gl, capabilities ) {

    	const isWebGL2 = capabilities.isWebGL2;

    	const buffers = new WeakMap();

    	function createBuffer( attribute, bufferType ) {

    		const array = attribute.array;
    		const usage = attribute.usage;

    		const buffer = gl.createBuffer();

    		gl.bindBuffer( bufferType, buffer );
    		gl.bufferData( bufferType, array, usage );

    		attribute.onUploadCallback();

    		let type;

    		if ( array instanceof Float32Array ) {

    			type = 5126;

    		} else if ( array instanceof Uint16Array ) {

    			if ( attribute.isFloat16BufferAttribute ) {

    				if ( isWebGL2 ) {

    					type = 5131;

    				} else {

    					throw new Error( 'THREE.WebGLAttributes: Usage of Float16BufferAttribute requires WebGL2.' );

    				}

    			} else {

    				type = 5123;

    			}

    		} else if ( array instanceof Int16Array ) {

    			type = 5122;

    		} else if ( array instanceof Uint32Array ) {

    			type = 5125;

    		} else if ( array instanceof Int32Array ) {

    			type = 5124;

    		} else if ( array instanceof Int8Array ) {

    			type = 5120;

    		} else if ( array instanceof Uint8Array ) {

    			type = 5121;

    		} else if ( array instanceof Uint8ClampedArray ) {

    			type = 5121;

    		} else {

    			throw new Error( 'THREE.WebGLAttributes: Unsupported buffer data format: ' + array );

    		}

    		return {
    			buffer: buffer,
    			type: type,
    			bytesPerElement: array.BYTES_PER_ELEMENT,
    			version: attribute.version
    		};

    	}

    	function updateBuffer( buffer, attribute, bufferType ) {

    		const array = attribute.array;
    		const updateRange = attribute.updateRange;

    		gl.bindBuffer( bufferType, buffer );

    		if ( updateRange.count === - 1 ) {

    			// Not using update ranges

    			gl.bufferSubData( bufferType, 0, array );

    		} else {

    			if ( isWebGL2 ) {

    				gl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,
    					array, updateRange.offset, updateRange.count );

    			} else {

    				gl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,
    					array.subarray( updateRange.offset, updateRange.offset + updateRange.count ) );

    			}

    			updateRange.count = - 1; // reset range

    		}

    	}

    	//

    	function get( attribute ) {

    		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;

    		return buffers.get( attribute );

    	}

    	function remove( attribute ) {

    		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;

    		const data = buffers.get( attribute );

    		if ( data ) {

    			gl.deleteBuffer( data.buffer );

    			buffers.delete( attribute );

    		}

    	}

    	function update( attribute, bufferType ) {

    		if ( attribute.isGLBufferAttribute ) {

    			const cached = buffers.get( attribute );

    			if ( ! cached || cached.version < attribute.version ) {

    				buffers.set( attribute, {
    					buffer: attribute.buffer,
    					type: attribute.type,
    					bytesPerElement: attribute.elementSize,
    					version: attribute.version
    				} );

    			}

    			return;

    		}

    		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;

    		const data = buffers.get( attribute );

    		if ( data === undefined ) {

    			buffers.set( attribute, createBuffer( attribute, bufferType ) );

    		} else if ( data.version < attribute.version ) {

    			updateBuffer( data.buffer, attribute, bufferType );

    			data.version = attribute.version;

    		}

    	}

    	return {

    		get: get,
    		remove: remove,
    		update: update

    	};

    }

    class PlaneGeometry extends BufferGeometry {

    	constructor( width = 1, height = 1, widthSegments = 1, heightSegments = 1 ) {

    		super();

    		this.type = 'PlaneGeometry';

    		this.parameters = {
    			width: width,
    			height: height,
    			widthSegments: widthSegments,
    			heightSegments: heightSegments
    		};

    		const width_half = width / 2;
    		const height_half = height / 2;

    		const gridX = Math.floor( widthSegments );
    		const gridY = Math.floor( heightSegments );

    		const gridX1 = gridX + 1;
    		const gridY1 = gridY + 1;

    		const segment_width = width / gridX;
    		const segment_height = height / gridY;

    		//

    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];

    		for ( let iy = 0; iy < gridY1; iy ++ ) {

    			const y = iy * segment_height - height_half;

    			for ( let ix = 0; ix < gridX1; ix ++ ) {

    				const x = ix * segment_width - width_half;

    				vertices.push( x, - y, 0 );

    				normals.push( 0, 0, 1 );

    				uvs.push( ix / gridX );
    				uvs.push( 1 - ( iy / gridY ) );

    			}

    		}

    		for ( let iy = 0; iy < gridY; iy ++ ) {

    			for ( let ix = 0; ix < gridX; ix ++ ) {

    				const a = ix + gridX1 * iy;
    				const b = ix + gridX1 * ( iy + 1 );
    				const c = ( ix + 1 ) + gridX1 * ( iy + 1 );
    				const d = ( ix + 1 ) + gridX1 * iy;

    				indices.push( a, b, d );
    				indices.push( b, c, d );

    			}

    		}

    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

    	}

    	static fromJSON( data ) {

    		return new PlaneGeometry( data.width, data.height, data.widthSegments, data.heightSegments );

    	}

    }

    var alphamap_fragment = "#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\n#endif";

    var alphamap_pars_fragment = "#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";

    var alphatest_fragment = "#ifdef USE_ALPHATEST\n\tif ( diffuseColor.a < alphaTest ) discard;\n#endif";

    var alphatest_pars_fragment = "#ifdef USE_ALPHATEST\n\tuniform float alphaTest;\n#endif";

    var aomap_fragment = "#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_ENVMAP ) && defined( STANDARD )\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.roughness );\n\t#endif\n#endif";

    var aomap_pars_fragment = "#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif";

    var begin_vertex = "vec3 transformed = vec3( position );";

    var beginnormal_vertex = "vec3 objectNormal = vec3( normal );\n#ifdef USE_TANGENT\n\tvec3 objectTangent = vec3( tangent.xyz );\n#endif";

    var bsdfs = "vec3 BRDF_Lambert( const in vec3 diffuseColor ) {\n\treturn RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 f0, const in float f90, const in float dotVH ) {\n\tfloat fresnel = exp2( ( - 5.55473 * dotVH - 6.98316 ) * dotVH );\n\treturn f0 * ( 1.0 - fresnel ) + ( f90 * fresnel );\n}\nfloat F_Schlick( const in float f0, const in float f90, const in float dotVH ) {\n\tfloat fresnel = exp2( ( - 5.55473 * dotVH - 6.98316 ) * dotVH );\n\treturn f0 * ( 1.0 - fresnel ) + ( f90 * fresnel );\n}\nvec3 Schlick_to_F0( const in vec3 f, const in float f90, const in float dotVH ) {\n    float x = clamp( 1.0 - dotVH, 0.0, 1.0 );\n    float x2 = x * x;\n    float x5 = clamp( x * x2 * x2, 0.0, 0.9999 );\n    return ( f - vec3( f90 ) * x5 ) / ( 1.0 - x5 );\n}\nfloat V_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\treturn 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n\tfloat a2 = pow2( alpha );\n\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n\treturn RECIPROCAL_PI * a2 / pow2( denom );\n}\nvec3 BRDF_GGX( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in vec3 f0, const in float f90, const in float roughness ) {\n\tfloat alpha = pow2( roughness );\n\tvec3 halfDir = normalize( lightDir + viewDir );\n\tfloat dotNL = saturate( dot( normal, lightDir ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\n\tvec3 F = F_Schlick( f0, f90, dotVH );\n\tfloat V = V_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\tfloat D = D_GGX( alpha, dotNH );\n\treturn F * ( V * D );\n}\n#ifdef USE_IRIDESCENCE\n\tvec3 BRDF_GGX_Iridescence( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in vec3 f0, const in float f90, const in float iridescence, const in vec3 iridescenceFresnel, const in float roughness ) {\n\t\tfloat alpha = pow2( roughness );\n\t\tvec3 halfDir = normalize( lightDir + viewDir );\n\t\tfloat dotNL = saturate( dot( normal, lightDir ) );\n\t\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\t\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\t\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\n\t\tvec3 F = mix( F_Schlick( f0, f90, dotVH ), iridescenceFresnel, iridescence );\n\t\tfloat V = V_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\t\tfloat D = D_GGX( alpha, dotNH );\n\t\treturn F * ( V * D );\n\t}\n#endif\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n\tconst float LUT_SIZE = 64.0;\n\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\n\tfloat dotNV = saturate( dot( N, V ) );\n\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n\tuv = uv * LUT_SCALE + LUT_BIAS;\n\treturn uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n\tfloat l = length( f );\n\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n\tfloat x = dot( v1, v2 );\n\tfloat y = abs( x );\n\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\n\tfloat v = a / b;\n\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n\treturn cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n\tvec3 lightNormal = cross( v1, v2 );\n\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n\tvec3 T1, T2;\n\tT1 = normalize( V - N * dot( V, N ) );\n\tT2 = - cross( N, T1 );\n\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n\tvec3 coords[ 4 ];\n\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n\tcoords[ 0 ] = normalize( coords[ 0 ] );\n\tcoords[ 1 ] = normalize( coords[ 1 ] );\n\tcoords[ 2 ] = normalize( coords[ 2 ] );\n\tcoords[ 3 ] = normalize( coords[ 3 ] );\n\tvec3 vectorFormFactor = vec3( 0.0 );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n\treturn vec3( result );\n}\nfloat G_BlinnPhong_Implicit( ) {\n\treturn 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_BlinnPhong( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float shininess ) {\n\tvec3 halfDir = normalize( lightDir + viewDir );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, 1.0, dotVH );\n\tfloat G = G_BlinnPhong_Implicit( );\n\tfloat D = D_BlinnPhong( shininess, dotNH );\n\treturn F * ( G * D );\n}\n#if defined( USE_SHEEN )\nfloat D_Charlie( float roughness, float dotNH ) {\n\tfloat alpha = pow2( roughness );\n\tfloat invAlpha = 1.0 / alpha;\n\tfloat cos2h = dotNH * dotNH;\n\tfloat sin2h = max( 1.0 - cos2h, 0.0078125 );\n\treturn ( 2.0 + invAlpha ) * pow( sin2h, invAlpha * 0.5 ) / ( 2.0 * PI );\n}\nfloat V_Neubelt( float dotNV, float dotNL ) {\n\treturn saturate( 1.0 / ( 4.0 * ( dotNL + dotNV - dotNL * dotNV ) ) );\n}\nvec3 BRDF_Sheen( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, vec3 sheenColor, const in float sheenRoughness ) {\n\tvec3 halfDir = normalize( lightDir + viewDir );\n\tfloat dotNL = saturate( dot( normal, lightDir ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat D = D_Charlie( sheenRoughness, dotNH );\n\tfloat V = V_Neubelt( dotNV, dotNL );\n\treturn sheenColor * ( D * V );\n}\n#endif";

    var iridescence_fragment = "#ifdef USE_IRIDESCENCE\n\tconst mat3 XYZ_TO_REC709 = mat3(\n\t\t 3.2404542, -0.9692660,  0.0556434,\n\t\t-1.5371385,  1.8760108, -0.2040259,\n\t\t-0.4985314,  0.0415560,  1.0572252\n\t);\n\tvec3 Fresnel0ToIor( vec3 fresnel0 ) {\n\t\tvec3 sqrtF0 = sqrt( fresnel0 );\n\t\treturn ( vec3( 1.0 ) + sqrtF0 ) / ( vec3( 1.0 ) - sqrtF0 );\n\t}\n\tvec3 IorToFresnel0( vec3 transmittedIor, float incidentIor ) {\n\t\treturn pow2( ( transmittedIor - vec3( incidentIor ) ) / ( transmittedIor + vec3( incidentIor ) ) );\n\t}\n\tfloat IorToFresnel0( float transmittedIor, float incidentIor ) {\n\t\treturn pow2( ( transmittedIor - incidentIor ) / ( transmittedIor + incidentIor ));\n\t}\n\tvec3 evalSensitivity( float OPD, vec3 shift ) {\n\t\tfloat phase = 2.0 * PI * OPD * 1.0e-9;\n\t\tvec3 val = vec3( 5.4856e-13, 4.4201e-13, 5.2481e-13 );\n\t\tvec3 pos = vec3( 1.6810e+06, 1.7953e+06, 2.2084e+06 );\n\t\tvec3 var = vec3( 4.3278e+09, 9.3046e+09, 6.6121e+09 );\n\t\tvec3 xyz = val * sqrt( 2.0 * PI * var ) * cos( pos * phase + shift ) * exp( - pow2( phase ) * var );\n\t\txyz.x += 9.7470e-14 * sqrt( 2.0 * PI * 4.5282e+09 ) * cos( 2.2399e+06 * phase + shift[ 0 ] ) * exp( - 4.5282e+09 * pow2( phase ) );\n\t\txyz /= 1.0685e-7;\n\t\tvec3 rgb = XYZ_TO_REC709 * xyz;\n\t\treturn rgb;\n\t}\n\tvec3 evalIridescence( float outsideIOR, float eta2, float cosTheta1, float thinFilmThickness, vec3 baseF0 ) {\n\t\tvec3 I;\n\t\tfloat iridescenceIOR = mix( outsideIOR, eta2, smoothstep( 0.0, 0.03, thinFilmThickness ) );\n\t\tfloat sinTheta2Sq = pow2( outsideIOR / iridescenceIOR ) * ( 1.0 - pow2( cosTheta1 ) );\n\t\tfloat cosTheta2Sq = 1.0 - sinTheta2Sq;\n\t\tif ( cosTheta2Sq < 0.0 ) {\n\t\t\t return vec3( 1.0 );\n\t\t}\n\t\tfloat cosTheta2 = sqrt( cosTheta2Sq );\n\t\tfloat R0 = IorToFresnel0( iridescenceIOR, outsideIOR );\n\t\tfloat R12 = F_Schlick( R0, 1.0, cosTheta1 );\n\t\tfloat R21 = R12;\n\t\tfloat T121 = 1.0 - R12;\n\t\tfloat phi12 = 0.0;\n\t\tif ( iridescenceIOR < outsideIOR ) phi12 = PI;\n\t\tfloat phi21 = PI - phi12;\n\t\tvec3 baseIOR = Fresnel0ToIor( clamp( baseF0, 0.0, 0.9999 ) );\t\tvec3 R1 = IorToFresnel0( baseIOR, iridescenceIOR );\n\t\tvec3 R23 = F_Schlick( R1, 1.0, cosTheta2 );\n\t\tvec3 phi23 = vec3( 0.0 );\n\t\tif ( baseIOR[ 0 ] < iridescenceIOR ) phi23[ 0 ] = PI;\n\t\tif ( baseIOR[ 1 ] < iridescenceIOR ) phi23[ 1 ] = PI;\n\t\tif ( baseIOR[ 2 ] < iridescenceIOR ) phi23[ 2 ] = PI;\n\t\tfloat OPD = 2.0 * iridescenceIOR * thinFilmThickness * cosTheta2;\n\t\tvec3 phi = vec3( phi21 ) + phi23;\n\t\tvec3 R123 = clamp( R12 * R23, 1e-5, 0.9999 );\n\t\tvec3 r123 = sqrt( R123 );\n\t\tvec3 Rs = pow2( T121 ) * R23 / ( vec3( 1.0 ) - R123 );\n\t\tvec3 C0 = R12 + Rs;\n\t\tI = C0;\n\t\tvec3 Cm = Rs - T121;\n\t\tfor ( int m = 1; m <= 2; ++ m ) {\n\t\t\tCm *= r123;\n\t\t\tvec3 Sm = 2.0 * evalSensitivity( float( m ) * OPD, float( m ) * phi );\n\t\t\tI += Cm * Sm;\n\t\t}\n\t\treturn max( I, vec3( 0.0 ) );\n\t}\n#endif";

    var bumpmap_pars_fragment = "#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vUv );\n\t\tvec2 dSTdy = dFdy( vUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy, float faceDirection ) {\n\t\tvec3 vSigmaX = dFdx( surf_pos.xyz );\n\t\tvec3 vSigmaY = dFdy( surf_pos.xyz );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 ) * faceDirection;\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif";

    var clipping_planes_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\tplane = clippingPlanes[ i ];\n\t\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\n\t}\n\t#pragma unroll_loop_end\n\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\tbool clipped = true;\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t\tif ( clipped ) discard;\n\t#endif\n#endif";

    var clipping_planes_pars_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif";

    var clipping_planes_pars_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n#endif";

    var clipping_planes_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvClipPosition = - mvPosition.xyz;\n#endif";

    var color_fragment = "#if defined( USE_COLOR_ALPHA )\n\tdiffuseColor *= vColor;\n#elif defined( USE_COLOR )\n\tdiffuseColor.rgb *= vColor;\n#endif";

    var color_pars_fragment = "#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR )\n\tvarying vec3 vColor;\n#endif";

    var color_pars_vertex = "#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvarying vec3 vColor;\n#endif";

    var color_vertex = "#if defined( USE_COLOR_ALPHA )\n\tvColor = vec4( 1.0 );\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvColor = vec3( 1.0 );\n#endif\n#ifdef USE_COLOR\n\tvColor *= color;\n#endif\n#ifdef USE_INSTANCING_COLOR\n\tvColor.xyz *= instanceColor.xyz;\n#endif";

    var common$1 = "#define PI 3.141592653589793\n#define PI2 6.283185307179586\n#define PI_HALF 1.5707963267948966\n#define RECIPROCAL_PI 0.3183098861837907\n#define RECIPROCAL_PI2 0.15915494309189535\n#define EPSILON 1e-6\n#ifndef saturate\n#define saturate( a ) clamp( a, 0.0, 1.0 )\n#endif\n#define whiteComplement( a ) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nvec3 pow2( const in vec3 x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat max3( const in vec3 v ) { return max( max( v.x, v.y ), v.z ); }\nfloat average( const in vec3 v ) { return dot( v, vec3( 0.3333333 ) ); }\nhighp float rand( const in vec2 uv ) {\n\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\n\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n\treturn fract( sin( sn ) * c );\n}\n#ifdef HIGH_PRECISION\n\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\n#else\n\tfloat precisionSafeLength( vec3 v ) {\n\t\tfloat maxComponent = max3( abs( v ) );\n\t\treturn length( v / maxComponent ) * maxComponent;\n\t}\n#endif\nstruct IncidentLight {\n\tvec3 color;\n\tvec3 direction;\n\tbool visible;\n};\nstruct ReflectedLight {\n\tvec3 directDiffuse;\n\tvec3 directSpecular;\n\tvec3 indirectDiffuse;\n\tvec3 indirectSpecular;\n};\nstruct GeometricContext {\n\tvec3 position;\n\tvec3 normal;\n\tvec3 viewDir;\n#ifdef USE_CLEARCOAT\n\tvec3 clearcoatNormal;\n#endif\n};\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nmat3 transposeMat3( const in mat3 m ) {\n\tmat3 tmp;\n\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n\treturn tmp;\n}\nfloat luminance( const in vec3 rgb ) {\n\tconst vec3 weights = vec3( 0.2126729, 0.7151522, 0.0721750 );\n\treturn dot( weights, rgb );\n}\nbool isPerspectiveMatrix( mat4 m ) {\n\treturn m[ 2 ][ 3 ] == - 1.0;\n}\nvec2 equirectUv( in vec3 dir ) {\n\tfloat u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\n\tfloat v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\treturn vec2( u, v );\n}";

    var cube_uv_reflection_fragment = "#ifdef ENVMAP_TYPE_CUBE_UV\n\t#define cubeUV_minMipLevel 4.0\n\t#define cubeUV_minTileSize 16.0\n\tfloat getFace( vec3 direction ) {\n\t\tvec3 absDirection = abs( direction );\n\t\tfloat face = - 1.0;\n\t\tif ( absDirection.x > absDirection.z ) {\n\t\t\tif ( absDirection.x > absDirection.y )\n\t\t\t\tface = direction.x > 0.0 ? 0.0 : 3.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t} else {\n\t\t\tif ( absDirection.z > absDirection.y )\n\t\t\t\tface = direction.z > 0.0 ? 2.0 : 5.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t}\n\t\treturn face;\n\t}\n\tvec2 getUV( vec3 direction, float face ) {\n\t\tvec2 uv;\n\t\tif ( face == 0.0 ) {\n\t\t\tuv = vec2( direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 1.0 ) {\n\t\t\tuv = vec2( - direction.x, - direction.z ) / abs( direction.y );\n\t\t} else if ( face == 2.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.y ) / abs( direction.z );\n\t\t} else if ( face == 3.0 ) {\n\t\t\tuv = vec2( - direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 4.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.z ) / abs( direction.y );\n\t\t} else {\n\t\t\tuv = vec2( direction.x, direction.y ) / abs( direction.z );\n\t\t}\n\t\treturn 0.5 * ( uv + 1.0 );\n\t}\n\tvec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\n\t\tfloat face = getFace( direction );\n\t\tfloat filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\n\t\tmipInt = max( mipInt, cubeUV_minMipLevel );\n\t\tfloat faceSize = exp2( mipInt );\n\t\tvec2 uv = getUV( direction, face ) * ( faceSize - 2.0 ) + 1.0;\n\t\tif ( face > 2.0 ) {\n\t\t\tuv.y += faceSize;\n\t\t\tface -= 3.0;\n\t\t}\n\t\tuv.x += face * faceSize;\n\t\tuv.x += filterInt * 3.0 * cubeUV_minTileSize;\n\t\tuv.y += 4.0 * ( exp2( CUBEUV_MAX_MIP ) - faceSize );\n\t\tuv.x *= CUBEUV_TEXEL_WIDTH;\n\t\tuv.y *= CUBEUV_TEXEL_HEIGHT;\n\t\t#ifdef texture2DGradEXT\n\t\t\treturn texture2DGradEXT( envMap, uv, vec2( 0.0 ), vec2( 0.0 ) ).rgb;\n\t\t#else\n\t\t\treturn texture2D( envMap, uv ).rgb;\n\t\t#endif\n\t}\n\t#define cubeUV_r0 1.0\n\t#define cubeUV_v0 0.339\n\t#define cubeUV_m0 - 2.0\n\t#define cubeUV_r1 0.8\n\t#define cubeUV_v1 0.276\n\t#define cubeUV_m1 - 1.0\n\t#define cubeUV_r4 0.4\n\t#define cubeUV_v4 0.046\n\t#define cubeUV_m4 2.0\n\t#define cubeUV_r5 0.305\n\t#define cubeUV_v5 0.016\n\t#define cubeUV_m5 3.0\n\t#define cubeUV_r6 0.21\n\t#define cubeUV_v6 0.0038\n\t#define cubeUV_m6 4.0\n\tfloat roughnessToMip( float roughness ) {\n\t\tfloat mip = 0.0;\n\t\tif ( roughness >= cubeUV_r1 ) {\n\t\t\tmip = ( cubeUV_r0 - roughness ) * ( cubeUV_m1 - cubeUV_m0 ) / ( cubeUV_r0 - cubeUV_r1 ) + cubeUV_m0;\n\t\t} else if ( roughness >= cubeUV_r4 ) {\n\t\t\tmip = ( cubeUV_r1 - roughness ) * ( cubeUV_m4 - cubeUV_m1 ) / ( cubeUV_r1 - cubeUV_r4 ) + cubeUV_m1;\n\t\t} else if ( roughness >= cubeUV_r5 ) {\n\t\t\tmip = ( cubeUV_r4 - roughness ) * ( cubeUV_m5 - cubeUV_m4 ) / ( cubeUV_r4 - cubeUV_r5 ) + cubeUV_m4;\n\t\t} else if ( roughness >= cubeUV_r6 ) {\n\t\t\tmip = ( cubeUV_r5 - roughness ) * ( cubeUV_m6 - cubeUV_m5 ) / ( cubeUV_r5 - cubeUV_r6 ) + cubeUV_m5;\n\t\t} else {\n\t\t\tmip = - 2.0 * log2( 1.16 * roughness );\t\t}\n\t\treturn mip;\n\t}\n\tvec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\n\t\tfloat mip = clamp( roughnessToMip( roughness ), cubeUV_m0, CUBEUV_MAX_MIP );\n\t\tfloat mipF = fract( mip );\n\t\tfloat mipInt = floor( mip );\n\t\tvec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\n\t\tif ( mipF == 0.0 ) {\n\t\t\treturn vec4( color0, 1.0 );\n\t\t} else {\n\t\t\tvec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\n\t\t\treturn vec4( mix( color0, color1, mipF ), 1.0 );\n\t\t}\n\t}\n#endif";

    var defaultnormal_vertex = "vec3 transformedNormal = objectNormal;\n#ifdef USE_INSTANCING\n\tmat3 m = mat3( instanceMatrix );\n\ttransformedNormal /= vec3( dot( m[ 0 ], m[ 0 ] ), dot( m[ 1 ], m[ 1 ] ), dot( m[ 2 ], m[ 2 ] ) );\n\ttransformedNormal = m * transformedNormal;\n#endif\ntransformedNormal = normalMatrix * transformedNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n#ifdef USE_TANGENT\n\tvec3 transformedTangent = ( modelViewMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#ifdef FLIP_SIDED\n\t\ttransformedTangent = - transformedTangent;\n\t#endif\n#endif";

    var displacementmap_pars_vertex = "#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif";

    var displacementmap_vertex = "#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vUv ).x * displacementScale + displacementBias );\n#endif";

    var emissivemap_fragment = "#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif";

    var emissivemap_pars_fragment = "#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif";

    var encodings_fragment = "gl_FragColor = linearToOutputTexel( gl_FragColor );";

    var encodings_pars_fragment = "vec4 LinearToLinear( in vec4 value ) {\n\treturn value;\n}\nvec4 LinearTosRGB( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\n}";

    var envmap_fragment = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvec3 cameraToFrag;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\tvec4 envColor = textureCubeUV( envMap, reflectVec, 0.0 );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif";

    var envmap_common_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float envMapIntensity;\n\tuniform float flipEnvMap;\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\t\n#endif";

    var envmap_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float reflectivity;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( LAMBERT )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\tvarying vec3 vWorldPosition;\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif";

    var envmap_pars_vertex = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( LAMBERT )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\t\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif";

    var envmap_vertex = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif";

    var fog_vertex = "#ifdef USE_FOG\n\tvFogDepth = - mvPosition.z;\n#endif";

    var fog_pars_vertex = "#ifdef USE_FOG\n\tvarying float vFogDepth;\n#endif";

    var fog_fragment = "#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * vFogDepth * vFogDepth );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, vFogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif";

    var fog_pars_fragment = "#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float vFogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif";

    var gradientmap_pars_fragment = "#ifdef USE_GRADIENTMAP\n\tuniform sampler2D gradientMap;\n#endif\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\tfloat dotNL = dot( normal, lightDirection );\n\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t#ifdef USE_GRADIENTMAP\n\t\treturn vec3( texture2D( gradientMap, coord ).r );\n\t#else\n\t\tvec2 fw = fwidth( coord ) * 0.5;\n\t\treturn mix( vec3( 0.7 ), vec3( 1.0 ), smoothstep( 0.7 - fw.x, 0.7 + fw.x, coord.x ) );\n\t#endif\n}";

    var lightmap_fragment = "#ifdef USE_LIGHTMAP\n\tvec4 lightMapTexel = texture2D( lightMap, vUv2 );\n\tvec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;\n\treflectedLight.indirectDiffuse += lightMapIrradiance;\n#endif";

    var lightmap_pars_fragment = "#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif";

    var lights_lambert_fragment = "LambertMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularStrength = specularStrength;";

    var lights_lambert_pars_fragment = "varying vec3 vViewPosition;\nstruct LambertMaterial {\n\tvec3 diffuseColor;\n\tfloat specularStrength;\n};\nvoid RE_Direct_Lambert( const in IncidentLight directLight, const in GeometricContext geometry, const in LambertMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Lambert( const in vec3 irradiance, const in GeometricContext geometry, const in LambertMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_Lambert\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Lambert\n#define Material_LightProbeLOD( material )\t(0)";

    var lights_pars_begin = "uniform bool receiveShadow;\nuniform vec3 ambientLightColor;\nuniform vec3 lightProbe[ 9 ];\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\n\tfloat x = normal.x, y = normal.y, z = normal.z;\n\tvec3 result = shCoefficients[ 0 ] * 0.886227;\n\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\n\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\n\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\n\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\n\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\n\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\n\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\n\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\n\treturn result;\n}\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in vec3 normal ) {\n\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\n\treturn irradiance;\n}\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n\tvec3 irradiance = ambientLightColor;\n\treturn irradiance;\n}\nfloat getDistanceAttenuation( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n\t#if defined ( PHYSICALLY_CORRECT_LIGHTS )\n\t\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n\t\tif ( cutoffDistance > 0.0 ) {\n\t\t\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n\t\t}\n\t\treturn distanceFalloff;\n\t#else\n\t\tif ( cutoffDistance > 0.0 && decayExponent > 0.0 ) {\n\t\t\treturn pow( saturate( - lightDistance / cutoffDistance + 1.0 ), decayExponent );\n\t\t}\n\t\treturn 1.0;\n\t#endif\n}\nfloat getSpotAttenuation( const in float coneCosine, const in float penumbraCosine, const in float angleCosine ) {\n\treturn smoothstep( coneCosine, penumbraCosine, angleCosine );\n}\n#if NUM_DIR_LIGHTS > 0\n\tstruct DirectionalLight {\n\t\tvec3 direction;\n\t\tvec3 color;\n\t};\n\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n\tvoid getDirectionalLightInfo( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight light ) {\n\t\tlight.color = directionalLight.color;\n\t\tlight.direction = directionalLight.direction;\n\t\tlight.visible = true;\n\t}\n#endif\n#if NUM_POINT_LIGHTS > 0\n\tstruct PointLight {\n\t\tvec3 position;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t};\n\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n\tvoid getPointLightInfo( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight light ) {\n\t\tvec3 lVector = pointLight.position - geometry.position;\n\t\tlight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tlight.color = pointLight.color;\n\t\tlight.color *= getDistanceAttenuation( lightDistance, pointLight.distance, pointLight.decay );\n\t\tlight.visible = ( light.color != vec3( 0.0 ) );\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\tstruct SpotLight {\n\t\tvec3 position;\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tfloat coneCos;\n\t\tfloat penumbraCos;\n\t};\n\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n\tvoid getSpotLightInfo( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight light ) {\n\t\tvec3 lVector = spotLight.position - geometry.position;\n\t\tlight.direction = normalize( lVector );\n\t\tfloat angleCos = dot( light.direction, spotLight.direction );\n\t\tfloat spotAttenuation = getSpotAttenuation( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n\t\tif ( spotAttenuation > 0.0 ) {\n\t\t\tfloat lightDistance = length( lVector );\n\t\t\tlight.color = spotLight.color * spotAttenuation;\n\t\t\tlight.color *= getDistanceAttenuation( lightDistance, spotLight.distance, spotLight.decay );\n\t\t\tlight.visible = ( light.color != vec3( 0.0 ) );\n\t\t} else {\n\t\t\tlight.color = vec3( 0.0 );\n\t\t\tlight.visible = false;\n\t\t}\n\t}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n\tstruct RectAreaLight {\n\t\tvec3 color;\n\t\tvec3 position;\n\t\tvec3 halfWidth;\n\t\tvec3 halfHeight;\n\t};\n\tuniform sampler2D ltc_1;\tuniform sampler2D ltc_2;\n\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\tstruct HemisphereLight {\n\t\tvec3 direction;\n\t\tvec3 skyColor;\n\t\tvec3 groundColor;\n\t};\n\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in vec3 normal ) {\n\t\tfloat dotNL = dot( normal, hemiLight.direction );\n\t\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n\t\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n\t\treturn irradiance;\n\t}\n#endif";

    var envmap_physical_pars_fragment = "#if defined( USE_ENVMAP )\n\tvec3 getIBLIrradiance( const in vec3 normal ) {\n\t\t#if defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, worldNormal, 1.0 );\n\t\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t\t#else\n\t\t\treturn vec3( 0.0 );\n\t\t#endif\n\t}\n\tvec3 getIBLRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness ) {\n\t\t#if defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 reflectVec = reflect( - viewDir, normal );\n\t\t\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\n\t\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, reflectVec, roughness );\n\t\t\treturn envMapColor.rgb * envMapIntensity;\n\t\t#else\n\t\t\treturn vec3( 0.0 );\n\t\t#endif\n\t}\n#endif";

    var lights_toon_fragment = "ToonMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;";

    var lights_toon_pars_fragment = "varying vec3 vViewPosition;\nstruct ToonMaterial {\n\tvec3 diffuseColor;\n};\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_Toon\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Toon\n#define Material_LightProbeLOD( material )\t(0)";

    var lights_phong_fragment = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;";

    var lights_phong_pars_fragment = "varying vec3 vViewPosition;\nstruct BlinnPhongMaterial {\n\tvec3 diffuseColor;\n\tvec3 specularColor;\n\tfloat specularShininess;\n\tfloat specularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n\treflectedLight.directSpecular += irradiance * BRDF_BlinnPhong( directLight.direction, geometry.viewDir, geometry.normal, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_BlinnPhong\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_BlinnPhong\n#define Material_LightProbeLOD( material )\t(0)";

    var lights_physical_fragment = "PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nvec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\nmaterial.roughness = max( roughnessFactor, 0.0525 );material.roughness += geometryRoughness;\nmaterial.roughness = min( material.roughness, 1.0 );\n#ifdef IOR\n\tmaterial.ior = ior;\n\t#ifdef SPECULAR\n\t\tfloat specularIntensityFactor = specularIntensity;\n\t\tvec3 specularColorFactor = specularColor;\n\t\t#ifdef USE_SPECULARINTENSITYMAP\n\t\t\tspecularIntensityFactor *= texture2D( specularIntensityMap, vUv ).a;\n\t\t#endif\n\t\t#ifdef USE_SPECULARCOLORMAP\n\t\t\tspecularColorFactor *= texture2D( specularColorMap, vUv ).rgb;\n\t\t#endif\n\t\tmaterial.specularF90 = mix( specularIntensityFactor, 1.0, metalnessFactor );\n\t#else\n\t\tfloat specularIntensityFactor = 1.0;\n\t\tvec3 specularColorFactor = vec3( 1.0 );\n\t\tmaterial.specularF90 = 1.0;\n\t#endif\n\tmaterial.specularColor = mix( min( pow2( ( material.ior - 1.0 ) / ( material.ior + 1.0 ) ) * specularColorFactor, vec3( 1.0 ) ) * specularIntensityFactor, diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( 0.04 ), diffuseColor.rgb, metalnessFactor );\n\tmaterial.specularF90 = 1.0;\n#endif\n#ifdef USE_CLEARCOAT\n\tmaterial.clearcoat = clearcoat;\n\tmaterial.clearcoatRoughness = clearcoatRoughness;\n\tmaterial.clearcoatF0 = vec3( 0.04 );\n\tmaterial.clearcoatF90 = 1.0;\n\t#ifdef USE_CLEARCOATMAP\n\t\tmaterial.clearcoat *= texture2D( clearcoatMap, vUv ).x;\n\t#endif\n\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\t\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vUv ).y;\n\t#endif\n\tmaterial.clearcoat = saturate( material.clearcoat );\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\n\tmaterial.clearcoatRoughness += geometryRoughness;\n\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\n#endif\n#ifdef USE_IRIDESCENCE\n\tmaterial.iridescence = iridescence;\n\tmaterial.iridescenceIOR = iridescenceIOR;\n\t#ifdef USE_IRIDESCENCEMAP\n\t\tmaterial.iridescence *= texture2D( iridescenceMap, vUv ).r;\n\t#endif\n\t#ifdef USE_IRIDESCENCE_THICKNESSMAP\n\t\tmaterial.iridescenceThickness = (iridescenceThicknessMaximum - iridescenceThicknessMinimum) * texture2D( iridescenceThicknessMap, vUv ).g + iridescenceThicknessMinimum;\n\t#else\n\t\tmaterial.iridescenceThickness = iridescenceThicknessMaximum;\n\t#endif\n#endif\n#ifdef USE_SHEEN\n\tmaterial.sheenColor = sheenColor;\n\t#ifdef USE_SHEENCOLORMAP\n\t\tmaterial.sheenColor *= texture2D( sheenColorMap, vUv ).rgb;\n\t#endif\n\tmaterial.sheenRoughness = clamp( sheenRoughness, 0.07, 1.0 );\n\t#ifdef USE_SHEENROUGHNESSMAP\n\t\tmaterial.sheenRoughness *= texture2D( sheenRoughnessMap, vUv ).a;\n\t#endif\n#endif";

    var lights_physical_pars_fragment = "struct PhysicalMaterial {\n\tvec3 diffuseColor;\n\tfloat roughness;\n\tvec3 specularColor;\n\tfloat specularF90;\n\t#ifdef USE_CLEARCOAT\n\t\tfloat clearcoat;\n\t\tfloat clearcoatRoughness;\n\t\tvec3 clearcoatF0;\n\t\tfloat clearcoatF90;\n\t#endif\n\t#ifdef USE_IRIDESCENCE\n\t\tfloat iridescence;\n\t\tfloat iridescenceIOR;\n\t\tfloat iridescenceThickness;\n\t\tvec3 iridescenceFresnel;\n\t\tvec3 iridescenceF0;\n\t#endif\n\t#ifdef USE_SHEEN\n\t\tvec3 sheenColor;\n\t\tfloat sheenRoughness;\n\t#endif\n\t#ifdef IOR\n\t\tfloat ior;\n\t#endif\n\t#ifdef USE_TRANSMISSION\n\t\tfloat transmission;\n\t\tfloat transmissionAlpha;\n\t\tfloat thickness;\n\t\tfloat attenuationDistance;\n\t\tvec3 attenuationColor;\n\t#endif\n};\nvec3 clearcoatSpecular = vec3( 0.0 );\nvec3 sheenSpecular = vec3( 0.0 );\nfloat IBLSheenBRDF( const in vec3 normal, const in vec3 viewDir, const in float roughness ) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat r2 = roughness * roughness;\n\tfloat a = roughness < 0.25 ? -339.2 * r2 + 161.4 * roughness - 25.9 : -8.48 * r2 + 14.3 * roughness - 9.95;\n\tfloat b = roughness < 0.25 ? 44.0 * r2 - 23.7 * roughness + 3.26 : 1.97 * r2 - 3.27 * roughness + 0.72;\n\tfloat DG = exp( a * dotNV + b ) + ( roughness < 0.25 ? 0.0 : 0.1 * ( roughness - 0.25 ) );\n\treturn saturate( DG * RECIPROCAL_PI );\n}\nvec2 DFGApprox( const in vec3 normal, const in vec3 viewDir, const in float roughness ) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n\tvec4 r = roughness * c0 + c1;\n\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n\tvec2 fab = vec2( - 1.04, 1.04 ) * a004 + r.zw;\n\treturn fab;\n}\nvec3 EnvironmentBRDF( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness ) {\n\tvec2 fab = DFGApprox( normal, viewDir, roughness );\n\treturn specularColor * fab.x + specularF90 * fab.y;\n}\n#ifdef USE_IRIDESCENCE\nvoid computeMultiscatteringIridescence( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float iridescence, const in vec3 iridescenceF0, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n#else\nvoid computeMultiscattering( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n#endif\n\tvec2 fab = DFGApprox( normal, viewDir, roughness );\n\t#ifdef USE_IRIDESCENCE\n\t\tvec3 Fr = mix( specularColor, iridescenceF0, iridescence );\n\t#else\n\t\tvec3 Fr = specularColor;\n\t#endif\n\tvec3 FssEss = Fr * fab.x + specularF90 * fab.y;\n\tfloat Ess = fab.x + fab.y;\n\tfloat Ems = 1.0 - Ess;\n\tvec3 Favg = Fr + ( 1.0 - Fr ) * 0.047619;\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\n\tsingleScatter += FssEss;\n\tmultiScatter += Fms * Ems;\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t\tvec3 normal = geometry.normal;\n\t\tvec3 viewDir = geometry.viewDir;\n\t\tvec3 position = geometry.position;\n\t\tvec3 lightPos = rectAreaLight.position;\n\t\tvec3 halfWidth = rectAreaLight.halfWidth;\n\t\tvec3 halfHeight = rectAreaLight.halfHeight;\n\t\tvec3 lightColor = rectAreaLight.color;\n\t\tfloat roughness = material.roughness;\n\t\tvec3 rectCoords[ 4 ];\n\t\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\t\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\n\t\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\n\t\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\n\t\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3(    0, 1,    0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifdef USE_CLEARCOAT\n\t\tfloat dotNLcc = saturate( dot( geometry.clearcoatNormal, directLight.direction ) );\n\t\tvec3 ccIrradiance = dotNLcc * directLight.color;\n\t\tclearcoatSpecular += ccIrradiance * BRDF_GGX( directLight.direction, geometry.viewDir, geometry.clearcoatNormal, material.clearcoatF0, material.clearcoatF90, material.clearcoatRoughness );\n\t#endif\n\t#ifdef USE_SHEEN\n\t\tsheenSpecular += irradiance * BRDF_Sheen( directLight.direction, geometry.viewDir, geometry.normal, material.sheenColor, material.sheenRoughness );\n\t#endif\n\t#ifdef USE_IRIDESCENCE\n\t\treflectedLight.directSpecular += irradiance * BRDF_GGX_Iridescence( directLight.direction, geometry.viewDir, geometry.normal, material.specularColor, material.specularF90, material.iridescence, material.iridescenceFresnel, material.roughness );\n\t#else\n\t\treflectedLight.directSpecular += irradiance * BRDF_GGX( directLight.direction, geometry.viewDir, geometry.normal, material.specularColor, material.specularF90, material.roughness );\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\n\t#ifdef USE_CLEARCOAT\n\t\tclearcoatSpecular += clearcoatRadiance * EnvironmentBRDF( geometry.clearcoatNormal, geometry.viewDir, material.clearcoatF0, material.clearcoatF90, material.clearcoatRoughness );\n\t#endif\n\t#ifdef USE_SHEEN\n\t\tsheenSpecular += irradiance * material.sheenColor * IBLSheenBRDF( geometry.normal, geometry.viewDir, material.sheenRoughness );\n\t#endif\n\tvec3 singleScattering = vec3( 0.0 );\n\tvec3 multiScattering = vec3( 0.0 );\n\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\n\t#ifdef USE_IRIDESCENCE\n\t\tcomputeMultiscatteringIridescence( geometry.normal, geometry.viewDir, material.specularColor, material.specularF90, material.iridescence, material.iridescenceFresnel, material.roughness, singleScattering, multiScattering );\n\t#else\n\t\tcomputeMultiscattering( geometry.normal, geometry.viewDir, material.specularColor, material.specularF90, material.roughness, singleScattering, multiScattering );\n\t#endif\n\tvec3 totalScattering = singleScattering + multiScattering;\n\tvec3 diffuse = material.diffuseColor * ( 1.0 - max( max( totalScattering.r, totalScattering.g ), totalScattering.b ) );\n\treflectedLight.indirectSpecular += radiance * singleScattering;\n\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\n\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\n}\n#define RE_Direct\t\t\t\tRE_Direct_Physical\n#define RE_Direct_RectArea\t\tRE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular\t\tRE_IndirectSpecular_Physical\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}";

    var lights_fragment_begin = "\nGeometricContext geometry;\ngeometry.position = - vViewPosition;\ngeometry.normal = normal;\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\n#ifdef USE_CLEARCOAT\n\tgeometry.clearcoatNormal = clearcoatNormal;\n#endif\n#ifdef USE_IRIDESCENCE\n\tfloat dotNVi = saturate( dot( normal, geometry.viewDir ) );\n\tif ( material.iridescenceThickness == 0.0 ) {\n\t\tmaterial.iridescence = 0.0;\n\t} else {\n\t\tmaterial.iridescence = saturate( material.iridescence );\n\t}\n\tif ( material.iridescence > 0.0 ) {\n\t\tmaterial.iridescenceFresnel = evalIridescence( 1.0, material.iridescenceIOR, dotNVi, material.iridescenceThickness, material.specularColor );\n\t\tmaterial.iridescenceF0 = Schlick_to_F0( material.iridescenceFresnel, 1.0, dotNVi );\n\t}\n#endif\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n\tPointLight pointLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tgetPointLightInfo( pointLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\n\t\tpointLightShadow = pointLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n\tSpotLight spotLight;\n\tvec4 spotColor;\n\tvec3 spotLightCoord;\n\tbool inSpotLightMap;\n\t#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tgetSpotLightInfo( spotLight, geometry, directLight );\n\t\t#if ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )\n\t\t#define SPOT_LIGHT_MAP_INDEX UNROLLED_LOOP_INDEX\n\t\t#elif ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\t#define SPOT_LIGHT_MAP_INDEX NUM_SPOT_LIGHT_MAPS\n\t\t#else\n\t\t#define SPOT_LIGHT_MAP_INDEX ( UNROLLED_LOOP_INDEX - NUM_SPOT_LIGHT_SHADOWS + NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )\n\t\t#endif\n\t\t#if ( SPOT_LIGHT_MAP_INDEX < NUM_SPOT_LIGHT_MAPS )\n\t\t\tspotLightCoord = vSpotLightCoord[ i ].xyz / vSpotLightCoord[ i ].w;\n\t\t\tinSpotLightMap = all( lessThan( abs( spotLightCoord * 2. - 1. ), vec3( 1.0 ) ) );\n\t\t\tspotColor = texture2D( spotLightMap[ SPOT_LIGHT_MAP_INDEX ], spotLightCoord.xy );\n\t\t\tdirectLight.color = inSpotLightMap ? directLight.color * spotColor.rgb : directLight.color;\n\t\t#endif\n\t\t#undef SPOT_LIGHT_MAP_INDEX\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\tspotLightShadow = spotLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotLightCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n\tDirectionalLight directionalLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tgetDirectionalLightInfo( directionalLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\n\t\tdirectionalLightShadow = directionalLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n\tRectAreaLight rectAreaLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n\t\trectAreaLight = rectAreaLights[ i ];\n\t\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if defined( RE_IndirectDiffuse )\n\tvec3 iblIrradiance = vec3( 0.0 );\n\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n\tirradiance += getLightProbeIrradiance( lightProbe, geometry.normal );\n\t#if ( NUM_HEMI_LIGHTS > 0 )\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\t\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry.normal );\n\t\t}\n\t\t#pragma unroll_loop_end\n\t#endif\n#endif\n#if defined( RE_IndirectSpecular )\n\tvec3 radiance = vec3( 0.0 );\n\tvec3 clearcoatRadiance = vec3( 0.0 );\n#endif";

    var lights_fragment_maps = "#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel = texture2D( lightMap, vUv2 );\n\t\tvec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tiblIrradiance += getIBLIrradiance( geometry.normal );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\tradiance += getIBLRadiance( geometry.viewDir, geometry.normal, material.roughness );\n\t#ifdef USE_CLEARCOAT\n\t\tclearcoatRadiance += getIBLRadiance( geometry.viewDir, geometry.clearcoatNormal, material.clearcoatRoughness );\n\t#endif\n#endif";

    var lights_fragment_end = "#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometry, material, reflectedLight );\n#endif";

    var logdepthbuf_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tgl_FragDepthEXT = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif";

    var logdepthbuf_pars_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tuniform float logDepthBufFC;\n\tvarying float vFragDepth;\n\tvarying float vIsPerspective;\n#endif";

    var logdepthbuf_pars_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t\tvarying float vIsPerspective;\n\t#else\n\t\tuniform float logDepthBufFC;\n\t#endif\n#endif";

    var logdepthbuf_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvFragDepth = 1.0 + gl_Position.w;\n\t\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\n\t#else\n\t\tif ( isPerspectiveMatrix( projectionMatrix ) ) {\n\t\t\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n\t\t\tgl_Position.z *= gl_Position.w;\n\t\t}\n\t#endif\n#endif";

    var map_fragment = "#ifdef USE_MAP\n\tvec4 sampledDiffuseColor = texture2D( map, vUv );\n\t#ifdef DECODE_VIDEO_TEXTURE\n\t\tsampledDiffuseColor = vec4( mix( pow( sampledDiffuseColor.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), sampledDiffuseColor.rgb * 0.0773993808, vec3( lessThanEqual( sampledDiffuseColor.rgb, vec3( 0.04045 ) ) ) ), sampledDiffuseColor.w );\n\t#endif\n\tdiffuseColor *= sampledDiffuseColor;\n#endif";

    var map_pars_fragment = "#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif";

    var map_particle_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n#endif\n#ifdef USE_MAP\n\tdiffuseColor *= texture2D( map, uv );\n#endif\n#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\n#endif";

    var map_particle_pars_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tuniform mat3 uvTransform;\n#endif\n#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif\n#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";

    var metalnessmap_fragment = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif";

    var metalnessmap_pars_fragment = "#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif";

    var morphcolor_vertex = "#if defined( USE_MORPHCOLORS ) && defined( MORPHTARGETS_TEXTURE )\n\tvColor *= morphTargetBaseInfluence;\n\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\t#if defined( USE_COLOR_ALPHA )\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ) * morphTargetInfluences[ i ];\n\t\t#elif defined( USE_COLOR )\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ).rgb * morphTargetInfluences[ i ];\n\t\t#endif\n\t}\n#endif";

    var morphnormal_vertex = "#ifdef USE_MORPHNORMALS\n\tobjectNormal *= morphTargetBaseInfluence;\n\t#ifdef MORPHTARGETS_TEXTURE\n\t\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) objectNormal += getMorph( gl_VertexID, i, 1 ).xyz * morphTargetInfluences[ i ];\n\t\t}\n\t#else\n\t\tobjectNormal += morphNormal0 * morphTargetInfluences[ 0 ];\n\t\tobjectNormal += morphNormal1 * morphTargetInfluences[ 1 ];\n\t\tobjectNormal += morphNormal2 * morphTargetInfluences[ 2 ];\n\t\tobjectNormal += morphNormal3 * morphTargetInfluences[ 3 ];\n\t#endif\n#endif";

    var morphtarget_pars_vertex = "#ifdef USE_MORPHTARGETS\n\tuniform float morphTargetBaseInfluence;\n\t#ifdef MORPHTARGETS_TEXTURE\n\t\tuniform float morphTargetInfluences[ MORPHTARGETS_COUNT ];\n\t\tuniform sampler2DArray morphTargetsTexture;\n\t\tuniform ivec2 morphTargetsTextureSize;\n\t\tvec4 getMorph( const in int vertexIndex, const in int morphTargetIndex, const in int offset ) {\n\t\t\tint texelIndex = vertexIndex * MORPHTARGETS_TEXTURE_STRIDE + offset;\n\t\t\tint y = texelIndex / morphTargetsTextureSize.x;\n\t\t\tint x = texelIndex - y * morphTargetsTextureSize.x;\n\t\t\tivec3 morphUV = ivec3( x, y, morphTargetIndex );\n\t\t\treturn texelFetch( morphTargetsTexture, morphUV, 0 );\n\t\t}\n\t#else\n\t\t#ifndef USE_MORPHNORMALS\n\t\t\tuniform float morphTargetInfluences[ 8 ];\n\t\t#else\n\t\t\tuniform float morphTargetInfluences[ 4 ];\n\t\t#endif\n\t#endif\n#endif";

    var morphtarget_vertex = "#ifdef USE_MORPHTARGETS\n\ttransformed *= morphTargetBaseInfluence;\n\t#ifdef MORPHTARGETS_TEXTURE\n\t\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) transformed += getMorph( gl_VertexID, i, 0 ).xyz * morphTargetInfluences[ i ];\n\t\t}\n\t#else\n\t\ttransformed += morphTarget0 * morphTargetInfluences[ 0 ];\n\t\ttransformed += morphTarget1 * morphTargetInfluences[ 1 ];\n\t\ttransformed += morphTarget2 * morphTargetInfluences[ 2 ];\n\t\ttransformed += morphTarget3 * morphTargetInfluences[ 3 ];\n\t\t#ifndef USE_MORPHNORMALS\n\t\t\ttransformed += morphTarget4 * morphTargetInfluences[ 4 ];\n\t\t\ttransformed += morphTarget5 * morphTargetInfluences[ 5 ];\n\t\t\ttransformed += morphTarget6 * morphTargetInfluences[ 6 ];\n\t\t\ttransformed += morphTarget7 * morphTargetInfluences[ 7 ];\n\t\t#endif\n\t#endif\n#endif";

    var normal_fragment_begin = "float faceDirection = gl_FrontFacing ? 1.0 : - 1.0;\n#ifdef FLAT_SHADED\n\tvec3 fdx = dFdx( vViewPosition );\n\tvec3 fdy = dFdy( vViewPosition );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\t#ifdef USE_TANGENT\n\t\tvec3 tangent = normalize( vTangent );\n\t\tvec3 bitangent = normalize( vBitangent );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\ttangent = tangent * faceDirection;\n\t\t\tbitangent = bitangent * faceDirection;\n\t\t#endif\n\t\t#if defined( TANGENTSPACE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP )\n\t\t\tmat3 vTBN = mat3( tangent, bitangent, normal );\n\t\t#endif\n\t#endif\n#endif\nvec3 geometryNormal = normal;";

    var normal_fragment_maps = "#ifdef OBJECTSPACE_NORMALMAP\n\tnormal = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t#ifdef FLIP_SIDED\n\t\tnormal = - normal;\n\t#endif\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\tnormal = normalize( normalMatrix * normal );\n#elif defined( TANGENTSPACE_NORMALMAP )\n\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\tmapN.xy *= normalScale;\n\t#ifdef USE_TANGENT\n\t\tnormal = normalize( vTBN * mapN );\n\t#else\n\t\tnormal = perturbNormal2Arb( - vViewPosition, normal, mapN, faceDirection );\n\t#endif\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( - vViewPosition, normal, dHdxy_fwd(), faceDirection );\n#endif";

    var normal_pars_fragment = "#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif";

    var normal_pars_vertex = "#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif";

    var normal_vertex = "#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif";

    var normalmap_pars_fragment = "#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n#endif\n#ifdef OBJECTSPACE_NORMALMAP\n\tuniform mat3 normalMatrix;\n#endif\n#if ! defined ( USE_TANGENT ) && ( defined ( TANGENTSPACE_NORMALMAP ) || defined ( USE_CLEARCOAT_NORMALMAP ) )\n\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm, vec3 mapN, float faceDirection ) {\n\t\tvec3 q0 = dFdx( eye_pos.xyz );\n\t\tvec3 q1 = dFdy( eye_pos.xyz );\n\t\tvec2 st0 = dFdx( vUv.st );\n\t\tvec2 st1 = dFdy( vUv.st );\n\t\tvec3 N = surf_norm;\n\t\tvec3 q1perp = cross( q1, N );\n\t\tvec3 q0perp = cross( N, q0 );\n\t\tvec3 T = q1perp * st0.x + q0perp * st1.x;\n\t\tvec3 B = q1perp * st0.y + q0perp * st1.y;\n\t\tfloat det = max( dot( T, T ), dot( B, B ) );\n\t\tfloat scale = ( det == 0.0 ) ? 0.0 : faceDirection * inversesqrt( det );\n\t\treturn normalize( T * ( mapN.x * scale ) + B * ( mapN.y * scale ) + N * mapN.z );\n\t}\n#endif";

    var clearcoat_normal_fragment_begin = "#ifdef USE_CLEARCOAT\n\tvec3 clearcoatNormal = geometryNormal;\n#endif";

    var clearcoat_normal_fragment_maps = "#ifdef USE_CLEARCOAT_NORMALMAP\n\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vUv ).xyz * 2.0 - 1.0;\n\tclearcoatMapN.xy *= clearcoatNormalScale;\n\t#ifdef USE_TANGENT\n\t\tclearcoatNormal = normalize( vTBN * clearcoatMapN );\n\t#else\n\t\tclearcoatNormal = perturbNormal2Arb( - vViewPosition, clearcoatNormal, clearcoatMapN, faceDirection );\n\t#endif\n#endif";

    var clearcoat_pars_fragment = "#ifdef USE_CLEARCOATMAP\n\tuniform sampler2D clearcoatMap;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tuniform sampler2D clearcoatRoughnessMap;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform sampler2D clearcoatNormalMap;\n\tuniform vec2 clearcoatNormalScale;\n#endif";

    var iridescence_pars_fragment = "#ifdef USE_IRIDESCENCEMAP\n\tuniform sampler2D iridescenceMap;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n\tuniform sampler2D iridescenceThicknessMap;\n#endif";

    var output_fragment = "#ifdef OPAQUE\ndiffuseColor.a = 1.0;\n#endif\n#ifdef USE_TRANSMISSION\ndiffuseColor.a *= material.transmissionAlpha + 0.1;\n#endif\ngl_FragColor = vec4( outgoingLight, diffuseColor.a );";

    var packing = "vec3 packNormalToRGB( const in vec3 normal ) {\n\treturn normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n\treturn 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\nconst float ShiftRight8 = 1. / 256.;\nvec4 packDepthToRGBA( const in float v ) {\n\tvec4 r = vec4( fract( v * PackFactors ), v );\n\tr.yzw -= r.xyz * ShiftRight8;\treturn r * PackUpscale;\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n\treturn dot( v, UnpackFactors );\n}\nvec4 pack2HalfToRGBA( vec2 v ) {\n\tvec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ) );\n\treturn vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w );\n}\nvec2 unpackRGBATo2Half( vec4 v ) {\n\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\n\treturn linearClipZ * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( ( near + viewZ ) * far ) / ( ( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\n\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\n}";

    var premultiplied_alpha_fragment = "#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif";

    var project_vertex = "vec4 mvPosition = vec4( transformed, 1.0 );\n#ifdef USE_INSTANCING\n\tmvPosition = instanceMatrix * mvPosition;\n#endif\nmvPosition = modelViewMatrix * mvPosition;\ngl_Position = projectionMatrix * mvPosition;";

    var dithering_fragment = "#ifdef DITHERING\n\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif";

    var dithering_pars_fragment = "#ifdef DITHERING\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif";

    var roughnessmap_fragment = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\n\troughnessFactor *= texelRoughness.g;\n#endif";

    var roughnessmap_pars_fragment = "#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif";

    var shadowmap_pars_fragment = "#if NUM_SPOT_LIGHT_COORDS > 0\n  varying vec4 vSpotLightCoord[ NUM_SPOT_LIGHT_COORDS ];\n#endif\n#if NUM_SPOT_LIGHT_MAPS > 0\n  uniform sampler2D spotLightMap[ NUM_SPOT_LIGHT_MAPS ];\n#endif\n#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n\t\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n\t}\n\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\n\t\treturn unpackRGBATo2Half( texture2D( shadow, uv ) );\n\t}\n\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\n\t\tfloat occlusion = 1.0;\n\t\tvec2 distribution = texture2DDistribution( shadow, uv );\n\t\tfloat hard_shadow = step( compare , distribution.x );\n\t\tif (hard_shadow != 1.0 ) {\n\t\t\tfloat distance = compare - distribution.x ;\n\t\t\tfloat variance = max( 0.00000, distribution.y * distribution.y );\n\t\t\tfloat softness_probability = variance / (variance + distance * distance );\t\t\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\t\t\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\n\t\t}\n\t\treturn occlusion;\n\t}\n\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n\t\tfloat shadow = 1.0;\n\t\tshadowCoord.xyz /= shadowCoord.w;\n\t\tshadowCoord.z += shadowBias;\n\t\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\n\t\tbool inFrustum = all( inFrustumVec );\n\t\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\n\t\tbool frustumTest = all( frustumTestVec );\n\t\tif ( frustumTest ) {\n\t\t#if defined( SHADOWMAP_TYPE_PCF )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tfloat dx2 = dx0 / 2.0;\n\t\t\tfloat dy2 = dy0 / 2.0;\n\t\t\tfloat dx3 = dx1 / 2.0;\n\t\t\tfloat dy3 = dy1 / 2.0;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 17.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx = texelSize.x;\n\t\t\tfloat dy = texelSize.y;\n\t\t\tvec2 uv = shadowCoord.xy;\n\t\t\tvec2 f = fract( uv * shadowMapSize + 0.5 );\n\t\t\tuv -= f * texelSize;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, uv, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ),\n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ),\n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ),\n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t\t  f.x ),\n\t\t\t\t\t mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t\t  f.x ),\n\t\t\t\t\t f.y )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_VSM )\n\t\t\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#else\n\t\t\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#endif\n\t\t}\n\t\treturn shadow;\n\t}\n\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\n\t\tvec3 absV = abs( v );\n\t\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n\t\tabsV *= scaleToCube;\n\t\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n\t\tvec2 planar = v.xy;\n\t\tfloat almostATexel = 1.5 * texelSizeY;\n\t\tfloat almostOne = 1.0 - almostATexel;\n\t\tif ( absV.z >= almostOne ) {\n\t\t\tif ( v.z > 0.0 )\n\t\t\t\tplanar.x = 4.0 - v.x;\n\t\t} else if ( absV.x >= almostOne ) {\n\t\t\tfloat signX = sign( v.x );\n\t\t\tplanar.x = v.z * signX + 2.0 * signX;\n\t\t} else if ( absV.y >= almostOne ) {\n\t\t\tfloat signY = sign( v.y );\n\t\t\tplanar.x = v.x + 2.0 * signY + 2.0;\n\t\t\tplanar.y = v.z * signY - 2.0;\n\t\t}\n\t\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n\t}\n\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n\t\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n\t\tvec3 lightToPosition = shadowCoord.xyz;\n\t\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\t\tdp += shadowBias;\n\t\tvec3 bd3D = normalize( lightToPosition );\n\t\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\n\t\t\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n\t\t\treturn (\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n\t\t#endif\n\t}\n#endif";

    var shadowmap_pars_vertex = "#if NUM_SPOT_LIGHT_COORDS > 0\n  uniform mat4 spotLightMatrix[ NUM_SPOT_LIGHT_COORDS ];\n  varying vec4 vSpotLightCoord[ NUM_SPOT_LIGHT_COORDS ];\n#endif\n#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n#endif";

    var shadowmap_vertex = "#if defined( USE_SHADOWMAP ) || ( NUM_SPOT_LIGHT_COORDS > 0 )\n\t#if NUM_DIR_LIGHT_SHADOWS > 0 || NUM_SPOT_LIGHT_COORDS > 0 || NUM_POINT_LIGHT_SHADOWS > 0\n\t\tvec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\tvec4 shadowWorldPosition;\n\t#endif\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_COORDS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_COORDS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition;\n\t\t#if ( defined( USE_SHADOWMAP ) && UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\t\tshadowWorldPosition.xyz += shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias;\n\t\t#endif\n\t\tvSpotLightCoord[ i ] = spotLightMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n#endif";

    var shadowmask_pars_fragment = "float getShadowMask() {\n\tfloat shadow = 1.0;\n\t#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tdirectionalLight = directionalLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tspotLight = spotLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotLightCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tpointLight = pointLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#endif\n\treturn shadow;\n}";

    var skinbase_vertex = "#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";

    var skinning_pars_vertex = "#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\tuniform highp sampler2D boneTexture;\n\tuniform int boneTextureSize;\n\tmat4 getBoneMatrix( const in float i ) {\n\t\tfloat j = i * 4.0;\n\t\tfloat x = mod( j, float( boneTextureSize ) );\n\t\tfloat y = floor( j / float( boneTextureSize ) );\n\t\tfloat dx = 1.0 / float( boneTextureSize );\n\t\tfloat dy = 1.0 / float( boneTextureSize );\n\t\ty = dy * ( y + 0.5 );\n\t\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n\t\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n\t\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n\t\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n\t\tmat4 bone = mat4( v1, v2, v3, v4 );\n\t\treturn bone;\n\t}\n#endif";

    var skinning_vertex = "#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif";

    var skinnormal_vertex = "#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n\t#ifdef USE_TANGENT\n\t\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#endif\n#endif";

    var specularmap_fragment = "float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif";

    var specularmap_pars_fragment = "#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif";

    var tonemapping_fragment = "#if defined( TONE_MAPPING )\n\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif";

    var tonemapping_pars_fragment = "#ifndef saturate\n#define saturate( a ) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nvec3 LinearToneMapping( vec3 color ) {\n\treturn toneMappingExposure * color;\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( color / ( vec3( 1.0 ) + color ) );\n}\nvec3 OptimizedCineonToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\tcolor = max( vec3( 0.0 ), color - 0.004 );\n\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\nvec3 RRTAndODTFit( vec3 v ) {\n\tvec3 a = v * ( v + 0.0245786 ) - 0.000090537;\n\tvec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\n\treturn a / b;\n}\nvec3 ACESFilmicToneMapping( vec3 color ) {\n\tconst mat3 ACESInputMat = mat3(\n\t\tvec3( 0.59719, 0.07600, 0.02840 ),\t\tvec3( 0.35458, 0.90834, 0.13383 ),\n\t\tvec3( 0.04823, 0.01566, 0.83777 )\n\t);\n\tconst mat3 ACESOutputMat = mat3(\n\t\tvec3(  1.60475, -0.10208, -0.00327 ),\t\tvec3( -0.53108,  1.10813, -0.07276 ),\n\t\tvec3( -0.07367, -0.00605,  1.07602 )\n\t);\n\tcolor *= toneMappingExposure / 0.6;\n\tcolor = ACESInputMat * color;\n\tcolor = RRTAndODTFit( color );\n\tcolor = ACESOutputMat * color;\n\treturn saturate( color );\n}\nvec3 CustomToneMapping( vec3 color ) { return color; }";

    var transmission_fragment = "#ifdef USE_TRANSMISSION\n\tmaterial.transmission = transmission;\n\tmaterial.transmissionAlpha = 1.0;\n\tmaterial.thickness = thickness;\n\tmaterial.attenuationDistance = attenuationDistance;\n\tmaterial.attenuationColor = attenuationColor;\n\t#ifdef USE_TRANSMISSIONMAP\n\t\tmaterial.transmission *= texture2D( transmissionMap, vUv ).r;\n\t#endif\n\t#ifdef USE_THICKNESSMAP\n\t\tmaterial.thickness *= texture2D( thicknessMap, vUv ).g;\n\t#endif\n\tvec3 pos = vWorldPosition;\n\tvec3 v = normalize( cameraPosition - pos );\n\tvec3 n = inverseTransformDirection( normal, viewMatrix );\n\tvec4 transmission = getIBLVolumeRefraction(\n\t\tn, v, material.roughness, material.diffuseColor, material.specularColor, material.specularF90,\n\t\tpos, modelMatrix, viewMatrix, projectionMatrix, material.ior, material.thickness,\n\t\tmaterial.attenuationColor, material.attenuationDistance );\n\tmaterial.transmissionAlpha = mix( material.transmissionAlpha, transmission.a, material.transmission );\n\ttotalDiffuse = mix( totalDiffuse, transmission.rgb, material.transmission );\n#endif";

    var transmission_pars_fragment = "#ifdef USE_TRANSMISSION\n\tuniform float transmission;\n\tuniform float thickness;\n\tuniform float attenuationDistance;\n\tuniform vec3 attenuationColor;\n\t#ifdef USE_TRANSMISSIONMAP\n\t\tuniform sampler2D transmissionMap;\n\t#endif\n\t#ifdef USE_THICKNESSMAP\n\t\tuniform sampler2D thicknessMap;\n\t#endif\n\tuniform vec2 transmissionSamplerSize;\n\tuniform sampler2D transmissionSamplerMap;\n\tuniform mat4 modelMatrix;\n\tuniform mat4 projectionMatrix;\n\tvarying vec3 vWorldPosition;\n\tvec3 getVolumeTransmissionRay( const in vec3 n, const in vec3 v, const in float thickness, const in float ior, const in mat4 modelMatrix ) {\n\t\tvec3 refractionVector = refract( - v, normalize( n ), 1.0 / ior );\n\t\tvec3 modelScale;\n\t\tmodelScale.x = length( vec3( modelMatrix[ 0 ].xyz ) );\n\t\tmodelScale.y = length( vec3( modelMatrix[ 1 ].xyz ) );\n\t\tmodelScale.z = length( vec3( modelMatrix[ 2 ].xyz ) );\n\t\treturn normalize( refractionVector ) * thickness * modelScale;\n\t}\n\tfloat applyIorToRoughness( const in float roughness, const in float ior ) {\n\t\treturn roughness * clamp( ior * 2.0 - 2.0, 0.0, 1.0 );\n\t}\n\tvec4 getTransmissionSample( const in vec2 fragCoord, const in float roughness, const in float ior ) {\n\t\tfloat framebufferLod = log2( transmissionSamplerSize.x ) * applyIorToRoughness( roughness, ior );\n\t\t#ifdef texture2DLodEXT\n\t\t\treturn texture2DLodEXT( transmissionSamplerMap, fragCoord.xy, framebufferLod );\n\t\t#else\n\t\t\treturn texture2D( transmissionSamplerMap, fragCoord.xy, framebufferLod );\n\t\t#endif\n\t}\n\tvec3 applyVolumeAttenuation( const in vec3 radiance, const in float transmissionDistance, const in vec3 attenuationColor, const in float attenuationDistance ) {\n\t\tif ( isinf( attenuationDistance ) ) {\n\t\t\treturn radiance;\n\t\t} else {\n\t\t\tvec3 attenuationCoefficient = -log( attenuationColor ) / attenuationDistance;\n\t\t\tvec3 transmittance = exp( - attenuationCoefficient * transmissionDistance );\t\t\treturn transmittance * radiance;\n\t\t}\n\t}\n\tvec4 getIBLVolumeRefraction( const in vec3 n, const in vec3 v, const in float roughness, const in vec3 diffuseColor,\n\t\tconst in vec3 specularColor, const in float specularF90, const in vec3 position, const in mat4 modelMatrix,\n\t\tconst in mat4 viewMatrix, const in mat4 projMatrix, const in float ior, const in float thickness,\n\t\tconst in vec3 attenuationColor, const in float attenuationDistance ) {\n\t\tvec3 transmissionRay = getVolumeTransmissionRay( n, v, thickness, ior, modelMatrix );\n\t\tvec3 refractedRayExit = position + transmissionRay;\n\t\tvec4 ndcPos = projMatrix * viewMatrix * vec4( refractedRayExit, 1.0 );\n\t\tvec2 refractionCoords = ndcPos.xy / ndcPos.w;\n\t\trefractionCoords += 1.0;\n\t\trefractionCoords /= 2.0;\n\t\tvec4 transmittedLight = getTransmissionSample( refractionCoords, roughness, ior );\n\t\tvec3 attenuatedColor = applyVolumeAttenuation( transmittedLight.rgb, length( transmissionRay ), attenuationColor, attenuationDistance );\n\t\tvec3 F = EnvironmentBRDF( n, v, specularColor, specularF90, roughness );\n\t\treturn vec4( ( 1.0 - F ) * attenuatedColor * diffuseColor, transmittedLight.a );\n\t}\n#endif";

    var uv_pars_fragment = "#if ( defined( USE_UV ) && ! defined( UVS_VERTEX_ONLY ) )\n\tvarying vec2 vUv;\n#endif";

    var uv_pars_vertex = "#ifdef USE_UV\n\t#ifdef UVS_VERTEX_ONLY\n\t\tvec2 vUv;\n\t#else\n\t\tvarying vec2 vUv;\n\t#endif\n\tuniform mat3 uvTransform;\n#endif";

    var uv_vertex = "#ifdef USE_UV\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n#endif";

    var uv2_pars_fragment = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvarying vec2 vUv2;\n#endif";

    var uv2_pars_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tattribute vec2 uv2;\n\tvarying vec2 vUv2;\n\tuniform mat3 uv2Transform;\n#endif";

    var uv2_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvUv2 = ( uv2Transform * vec3( uv2, 1 ) ).xy;\n#endif";

    var worldpos_vertex = "#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP ) || defined ( USE_TRANSMISSION ) || NUM_SPOT_LIGHT_COORDS > 0\n\tvec4 worldPosition = vec4( transformed, 1.0 );\n\t#ifdef USE_INSTANCING\n\t\tworldPosition = instanceMatrix * worldPosition;\n\t#endif\n\tworldPosition = modelMatrix * worldPosition;\n#endif";

    const vertex$g = "varying vec2 vUv;\nuniform mat3 uvTransform;\nvoid main() {\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\tgl_Position = vec4( position.xy, 1.0, 1.0 );\n}";

    const fragment$g = "uniform sampler2D t2D;\nvarying vec2 vUv;\nvoid main() {\n\tgl_FragColor = texture2D( t2D, vUv );\n\t#ifdef DECODE_VIDEO_TEXTURE\n\t\tgl_FragColor = vec4( mix( pow( gl_FragColor.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), gl_FragColor.rgb * 0.0773993808, vec3( lessThanEqual( gl_FragColor.rgb, vec3( 0.04045 ) ) ) ), gl_FragColor.w );\n\t#endif\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

    const vertex$f = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}";

    const fragment$f = "#include <envmap_common_pars_fragment>\nuniform float opacity;\nvarying vec3 vWorldDirection;\n#include <cube_uv_reflection_fragment>\nvoid main() {\n\tvec3 vReflect = vWorldDirection;\n\t#include <envmap_fragment>\n\tgl_FragColor = envColor;\n\tgl_FragColor.a *= opacity;\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

    const vertex$e = "#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvHighPrecisionZW = gl_Position.zw;\n}";

    const fragment$e = "#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <logdepthbuf_fragment>\n\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( fragCoordZ );\n\t#endif\n}";

    const vertex$d = "#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\tvWorldPosition = worldPosition.xyz;\n}";

    const fragment$d = "#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}";

    const vertex$c = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n}";

    const fragment$c = "uniform sampler2D tEquirect;\nvarying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvec3 direction = normalize( vWorldDirection );\n\tvec2 sampleUV = equirectUv( direction );\n\tgl_FragColor = texture2D( tEquirect, sampleUV );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

    const vertex$b = "uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\tvLineDistance = scale * lineDistance;\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";

    const fragment$b = "uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <color_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";

    const vertex$a = "#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#if defined ( USE_ENVMAP ) || defined ( USE_SKINNING )\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinbase_vertex>\n\t\t#include <skinnormal_vertex>\n\t\t#include <defaultnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <fog_vertex>\n}";

    const fragment$a = "uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel = texture2D( lightMap, vUv2 );\n\t\treflectedLight.indirectDiffuse += lightMapTexel.rgb * lightMapIntensity * RECIPROCAL_PI;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include <aomap_fragment>\n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include <envmap_fragment>\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

    const vertex$9 = "#define LAMBERT\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";

    const fragment$9 = "#define LAMBERT\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_lambert_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_lambert_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

    const vertex$8 = "#define MATCAP\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n\tvViewPosition = - mvPosition.xyz;\n}";

    const fragment$8 = "#define MATCAP\nuniform vec3 diffuse;\nuniform float opacity;\nuniform sampler2D matcap;\nvarying vec3 vViewPosition;\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <fog_pars_fragment>\n#include <normal_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tvec3 viewDir = normalize( vViewPosition );\n\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\n\tvec3 y = cross( viewDir, x );\n\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\n\t#ifdef USE_MATCAP\n\t\tvec4 matcapColor = texture2D( matcap, uv );\n\t#else\n\t\tvec4 matcapColor = vec4( vec3( mix( 0.2, 0.8, uv.y ) ), 1.0 );\n\t#endif\n\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

    const vertex$7 = "#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n}";

    const fragment$7 = "#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <normal_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\t#include <logdepthbuf_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\n\t#ifdef OPAQUE\n\t\tgl_FragColor.a = 1.0;\n\t#endif\n}";

    const vertex$6 = "#define PHONG\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";

    const fragment$6 = "#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_phong_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

    const vertex$5 = "#define STANDARD\nvarying vec3 vViewPosition;\n#ifdef USE_TRANSMISSION\n\tvarying vec3 vWorldPosition;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n#ifdef USE_TRANSMISSION\n\tvWorldPosition = worldPosition.xyz;\n#endif\n}";

    const fragment$5 = "#define STANDARD\n#ifdef PHYSICAL\n\t#define IOR\n\t#define SPECULAR\n#endif\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifdef IOR\n\tuniform float ior;\n#endif\n#ifdef SPECULAR\n\tuniform float specularIntensity;\n\tuniform vec3 specularColor;\n\t#ifdef USE_SPECULARINTENSITYMAP\n\t\tuniform sampler2D specularIntensityMap;\n\t#endif\n\t#ifdef USE_SPECULARCOLORMAP\n\t\tuniform sampler2D specularColorMap;\n\t#endif\n#endif\n#ifdef USE_CLEARCOAT\n\tuniform float clearcoat;\n\tuniform float clearcoatRoughness;\n#endif\n#ifdef USE_IRIDESCENCE\n\tuniform float iridescence;\n\tuniform float iridescenceIOR;\n\tuniform float iridescenceThicknessMinimum;\n\tuniform float iridescenceThicknessMaximum;\n#endif\n#ifdef USE_SHEEN\n\tuniform vec3 sheenColor;\n\tuniform float sheenRoughness;\n\t#ifdef USE_SHEENCOLORMAP\n\t\tuniform sampler2D sheenColorMap;\n\t#endif\n\t#ifdef USE_SHEENROUGHNESSMAP\n\t\tuniform sampler2D sheenRoughnessMap;\n\t#endif\n#endif\nvarying vec3 vViewPosition;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <bsdfs>\n#include <iridescence_fragment>\n#include <cube_uv_reflection_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_physical_pars_fragment>\n#include <fog_pars_fragment>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_physical_pars_fragment>\n#include <transmission_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <clearcoat_pars_fragment>\n#include <iridescence_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <roughnessmap_fragment>\n\t#include <metalnessmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <clearcoat_normal_fragment_begin>\n\t#include <clearcoat_normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_physical_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 totalDiffuse = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse;\n\tvec3 totalSpecular = reflectedLight.directSpecular + reflectedLight.indirectSpecular;\n\t#include <transmission_fragment>\n\tvec3 outgoingLight = totalDiffuse + totalSpecular + totalEmissiveRadiance;\n\t#ifdef USE_SHEEN\n\t\tfloat sheenEnergyComp = 1.0 - 0.157 * max3( material.sheenColor );\n\t\toutgoingLight = outgoingLight * sheenEnergyComp + sheenSpecular;\n\t#endif\n\t#ifdef USE_CLEARCOAT\n\t\tfloat dotNVcc = saturate( dot( geometry.clearcoatNormal, geometry.viewDir ) );\n\t\tvec3 Fcc = F_Schlick( material.clearcoatF0, material.clearcoatF90, dotNVcc );\n\t\toutgoingLight = outgoingLight * ( 1.0 - material.clearcoat * Fcc ) + clearcoatSpecular * material.clearcoat;\n\t#endif\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

    const vertex$4 = "#define TOON\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";

    const fragment$4 = "#define TOON\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_toon_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_toon_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

    const vertex$3 = "uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\tgl_PointSize = size;\n\t#ifdef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\n\t#endif\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <fog_vertex>\n}";

    const fragment$3 = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_particle_fragment>\n\t#include <color_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";

    const vertex$2 = "#include <common>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";

    const fragment$2 = "uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";

    const vertex$1 = "uniform float rotation;\nuniform vec2 center;\n#include <common>\n#include <uv_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\n\tvec2 scale;\n\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\n\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\n\t#ifndef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) scale *= - mvPosition.z;\n\t#endif\n\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\n\tvec2 rotatedPosition;\n\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\n\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\n\tmvPosition.xy += rotatedPosition;\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";

    const fragment$1 = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";

    const ShaderChunk = {
    	alphamap_fragment: alphamap_fragment,
    	alphamap_pars_fragment: alphamap_pars_fragment,
    	alphatest_fragment: alphatest_fragment,
    	alphatest_pars_fragment: alphatest_pars_fragment,
    	aomap_fragment: aomap_fragment,
    	aomap_pars_fragment: aomap_pars_fragment,
    	begin_vertex: begin_vertex,
    	beginnormal_vertex: beginnormal_vertex,
    	bsdfs: bsdfs,
    	iridescence_fragment: iridescence_fragment,
    	bumpmap_pars_fragment: bumpmap_pars_fragment,
    	clipping_planes_fragment: clipping_planes_fragment,
    	clipping_planes_pars_fragment: clipping_planes_pars_fragment,
    	clipping_planes_pars_vertex: clipping_planes_pars_vertex,
    	clipping_planes_vertex: clipping_planes_vertex,
    	color_fragment: color_fragment,
    	color_pars_fragment: color_pars_fragment,
    	color_pars_vertex: color_pars_vertex,
    	color_vertex: color_vertex,
    	common: common$1,
    	cube_uv_reflection_fragment: cube_uv_reflection_fragment,
    	defaultnormal_vertex: defaultnormal_vertex,
    	displacementmap_pars_vertex: displacementmap_pars_vertex,
    	displacementmap_vertex: displacementmap_vertex,
    	emissivemap_fragment: emissivemap_fragment,
    	emissivemap_pars_fragment: emissivemap_pars_fragment,
    	encodings_fragment: encodings_fragment,
    	encodings_pars_fragment: encodings_pars_fragment,
    	envmap_fragment: envmap_fragment,
    	envmap_common_pars_fragment: envmap_common_pars_fragment,
    	envmap_pars_fragment: envmap_pars_fragment,
    	envmap_pars_vertex: envmap_pars_vertex,
    	envmap_physical_pars_fragment: envmap_physical_pars_fragment,
    	envmap_vertex: envmap_vertex,
    	fog_vertex: fog_vertex,
    	fog_pars_vertex: fog_pars_vertex,
    	fog_fragment: fog_fragment,
    	fog_pars_fragment: fog_pars_fragment,
    	gradientmap_pars_fragment: gradientmap_pars_fragment,
    	lightmap_fragment: lightmap_fragment,
    	lightmap_pars_fragment: lightmap_pars_fragment,
    	lights_lambert_fragment: lights_lambert_fragment,
    	lights_lambert_pars_fragment: lights_lambert_pars_fragment,
    	lights_pars_begin: lights_pars_begin,
    	lights_toon_fragment: lights_toon_fragment,
    	lights_toon_pars_fragment: lights_toon_pars_fragment,
    	lights_phong_fragment: lights_phong_fragment,
    	lights_phong_pars_fragment: lights_phong_pars_fragment,
    	lights_physical_fragment: lights_physical_fragment,
    	lights_physical_pars_fragment: lights_physical_pars_fragment,
    	lights_fragment_begin: lights_fragment_begin,
    	lights_fragment_maps: lights_fragment_maps,
    	lights_fragment_end: lights_fragment_end,
    	logdepthbuf_fragment: logdepthbuf_fragment,
    	logdepthbuf_pars_fragment: logdepthbuf_pars_fragment,
    	logdepthbuf_pars_vertex: logdepthbuf_pars_vertex,
    	logdepthbuf_vertex: logdepthbuf_vertex,
    	map_fragment: map_fragment,
    	map_pars_fragment: map_pars_fragment,
    	map_particle_fragment: map_particle_fragment,
    	map_particle_pars_fragment: map_particle_pars_fragment,
    	metalnessmap_fragment: metalnessmap_fragment,
    	metalnessmap_pars_fragment: metalnessmap_pars_fragment,
    	morphcolor_vertex: morphcolor_vertex,
    	morphnormal_vertex: morphnormal_vertex,
    	morphtarget_pars_vertex: morphtarget_pars_vertex,
    	morphtarget_vertex: morphtarget_vertex,
    	normal_fragment_begin: normal_fragment_begin,
    	normal_fragment_maps: normal_fragment_maps,
    	normal_pars_fragment: normal_pars_fragment,
    	normal_pars_vertex: normal_pars_vertex,
    	normal_vertex: normal_vertex,
    	normalmap_pars_fragment: normalmap_pars_fragment,
    	clearcoat_normal_fragment_begin: clearcoat_normal_fragment_begin,
    	clearcoat_normal_fragment_maps: clearcoat_normal_fragment_maps,
    	clearcoat_pars_fragment: clearcoat_pars_fragment,
    	iridescence_pars_fragment: iridescence_pars_fragment,
    	output_fragment: output_fragment,
    	packing: packing,
    	premultiplied_alpha_fragment: premultiplied_alpha_fragment,
    	project_vertex: project_vertex,
    	dithering_fragment: dithering_fragment,
    	dithering_pars_fragment: dithering_pars_fragment,
    	roughnessmap_fragment: roughnessmap_fragment,
    	roughnessmap_pars_fragment: roughnessmap_pars_fragment,
    	shadowmap_pars_fragment: shadowmap_pars_fragment,
    	shadowmap_pars_vertex: shadowmap_pars_vertex,
    	shadowmap_vertex: shadowmap_vertex,
    	shadowmask_pars_fragment: shadowmask_pars_fragment,
    	skinbase_vertex: skinbase_vertex,
    	skinning_pars_vertex: skinning_pars_vertex,
    	skinning_vertex: skinning_vertex,
    	skinnormal_vertex: skinnormal_vertex,
    	specularmap_fragment: specularmap_fragment,
    	specularmap_pars_fragment: specularmap_pars_fragment,
    	tonemapping_fragment: tonemapping_fragment,
    	tonemapping_pars_fragment: tonemapping_pars_fragment,
    	transmission_fragment: transmission_fragment,
    	transmission_pars_fragment: transmission_pars_fragment,
    	uv_pars_fragment: uv_pars_fragment,
    	uv_pars_vertex: uv_pars_vertex,
    	uv_vertex: uv_vertex,
    	uv2_pars_fragment: uv2_pars_fragment,
    	uv2_pars_vertex: uv2_pars_vertex,
    	uv2_vertex: uv2_vertex,
    	worldpos_vertex: worldpos_vertex,

    	background_vert: vertex$g,
    	background_frag: fragment$g,
    	cube_vert: vertex$f,
    	cube_frag: fragment$f,
    	depth_vert: vertex$e,
    	depth_frag: fragment$e,
    	distanceRGBA_vert: vertex$d,
    	distanceRGBA_frag: fragment$d,
    	equirect_vert: vertex$c,
    	equirect_frag: fragment$c,
    	linedashed_vert: vertex$b,
    	linedashed_frag: fragment$b,
    	meshbasic_vert: vertex$a,
    	meshbasic_frag: fragment$a,
    	meshlambert_vert: vertex$9,
    	meshlambert_frag: fragment$9,
    	meshmatcap_vert: vertex$8,
    	meshmatcap_frag: fragment$8,
    	meshnormal_vert: vertex$7,
    	meshnormal_frag: fragment$7,
    	meshphong_vert: vertex$6,
    	meshphong_frag: fragment$6,
    	meshphysical_vert: vertex$5,
    	meshphysical_frag: fragment$5,
    	meshtoon_vert: vertex$4,
    	meshtoon_frag: fragment$4,
    	points_vert: vertex$3,
    	points_frag: fragment$3,
    	shadow_vert: vertex$2,
    	shadow_frag: fragment$2,
    	sprite_vert: vertex$1,
    	sprite_frag: fragment$1
    };

    /**
     * Uniforms library for shared webgl shaders
     */

    const UniformsLib = {

    	common: {

    		diffuse: { value: /*@__PURE__*/ new Color( 0xffffff ) },
    		opacity: { value: 1.0 },

    		map: { value: null },
    		uvTransform: { value: /*@__PURE__*/ new Matrix3() },
    		uv2Transform: { value: /*@__PURE__*/ new Matrix3() },

    		alphaMap: { value: null },
    		alphaTest: { value: 0 }

    	},

    	specularmap: {

    		specularMap: { value: null },

    	},

    	envmap: {

    		envMap: { value: null },
    		flipEnvMap: { value: - 1 },
    		reflectivity: { value: 1.0 }, // basic, lambert, phong
    		ior: { value: 1.5 }, // physical
    		refractionRatio: { value: 0.98 } // basic, lambert, phong

    	},

    	aomap: {

    		aoMap: { value: null },
    		aoMapIntensity: { value: 1 }

    	},

    	lightmap: {

    		lightMap: { value: null },
    		lightMapIntensity: { value: 1 }

    	},

    	emissivemap: {

    		emissiveMap: { value: null }

    	},

    	bumpmap: {

    		bumpMap: { value: null },
    		bumpScale: { value: 1 }

    	},

    	normalmap: {

    		normalMap: { value: null },
    		normalScale: { value: /*@__PURE__*/ new Vector2( 1, 1 ) }

    	},

    	displacementmap: {

    		displacementMap: { value: null },
    		displacementScale: { value: 1 },
    		displacementBias: { value: 0 }

    	},

    	roughnessmap: {

    		roughnessMap: { value: null }

    	},

    	metalnessmap: {

    		metalnessMap: { value: null }

    	},

    	gradientmap: {

    		gradientMap: { value: null }

    	},

    	fog: {

    		fogDensity: { value: 0.00025 },
    		fogNear: { value: 1 },
    		fogFar: { value: 2000 },
    		fogColor: { value: /*@__PURE__*/ new Color( 0xffffff ) }

    	},

    	lights: {

    		ambientLightColor: { value: [] },

    		lightProbe: { value: [] },

    		directionalLights: { value: [], properties: {
    			direction: {},
    			color: {}
    		} },

    		directionalLightShadows: { value: [], properties: {
    			shadowBias: {},
    			shadowNormalBias: {},
    			shadowRadius: {},
    			shadowMapSize: {}
    		} },

    		directionalShadowMap: { value: [] },
    		directionalShadowMatrix: { value: [] },

    		spotLights: { value: [], properties: {
    			color: {},
    			position: {},
    			direction: {},
    			distance: {},
    			coneCos: {},
    			penumbraCos: {},
    			decay: {}
    		} },

    		spotLightShadows: { value: [], properties: {
    			shadowBias: {},
    			shadowNormalBias: {},
    			shadowRadius: {},
    			shadowMapSize: {}
    		} },

    		spotLightMap: { value: [] },
    		spotShadowMap: { value: [] },
    		spotLightMatrix: { value: [] },

    		pointLights: { value: [], properties: {
    			color: {},
    			position: {},
    			decay: {},
    			distance: {}
    		} },

    		pointLightShadows: { value: [], properties: {
    			shadowBias: {},
    			shadowNormalBias: {},
    			shadowRadius: {},
    			shadowMapSize: {},
    			shadowCameraNear: {},
    			shadowCameraFar: {}
    		} },

    		pointShadowMap: { value: [] },
    		pointShadowMatrix: { value: [] },

    		hemisphereLights: { value: [], properties: {
    			direction: {},
    			skyColor: {},
    			groundColor: {}
    		} },

    		// TODO (abelnation): RectAreaLight BRDF data needs to be moved from example to main src
    		rectAreaLights: { value: [], properties: {
    			color: {},
    			position: {},
    			width: {},
    			height: {}
    		} },

    		ltc_1: { value: null },
    		ltc_2: { value: null }

    	},

    	points: {

    		diffuse: { value: /*@__PURE__*/ new Color( 0xffffff ) },
    		opacity: { value: 1.0 },
    		size: { value: 1.0 },
    		scale: { value: 1.0 },
    		map: { value: null },
    		alphaMap: { value: null },
    		alphaTest: { value: 0 },
    		uvTransform: { value: /*@__PURE__*/ new Matrix3() }

    	},

    	sprite: {

    		diffuse: { value: /*@__PURE__*/ new Color( 0xffffff ) },
    		opacity: { value: 1.0 },
    		center: { value: /*@__PURE__*/ new Vector2( 0.5, 0.5 ) },
    		rotation: { value: 0.0 },
    		map: { value: null },
    		alphaMap: { value: null },
    		alphaTest: { value: 0 },
    		uvTransform: { value: /*@__PURE__*/ new Matrix3() }

    	}

    };

    const ShaderLib = {

    	basic: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.specularmap,
    			UniformsLib.envmap,
    			UniformsLib.aomap,
    			UniformsLib.lightmap,
    			UniformsLib.fog
    		] ),

    		vertexShader: ShaderChunk.meshbasic_vert,
    		fragmentShader: ShaderChunk.meshbasic_frag

    	},

    	lambert: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.specularmap,
    			UniformsLib.envmap,
    			UniformsLib.aomap,
    			UniformsLib.lightmap,
    			UniformsLib.emissivemap,
    			UniformsLib.bumpmap,
    			UniformsLib.normalmap,
    			UniformsLib.displacementmap,
    			UniformsLib.fog,
    			UniformsLib.lights,
    			{
    				emissive: { value: /*@__PURE__*/ new Color( 0x000000 ) }
    			}
    		] ),

    		vertexShader: ShaderChunk.meshlambert_vert,
    		fragmentShader: ShaderChunk.meshlambert_frag

    	},

    	phong: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.specularmap,
    			UniformsLib.envmap,
    			UniformsLib.aomap,
    			UniformsLib.lightmap,
    			UniformsLib.emissivemap,
    			UniformsLib.bumpmap,
    			UniformsLib.normalmap,
    			UniformsLib.displacementmap,
    			UniformsLib.fog,
    			UniformsLib.lights,
    			{
    				emissive: { value: /*@__PURE__*/ new Color( 0x000000 ) },
    				specular: { value: /*@__PURE__*/ new Color( 0x111111 ) },
    				shininess: { value: 30 }
    			}
    		] ),

    		vertexShader: ShaderChunk.meshphong_vert,
    		fragmentShader: ShaderChunk.meshphong_frag

    	},

    	standard: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.envmap,
    			UniformsLib.aomap,
    			UniformsLib.lightmap,
    			UniformsLib.emissivemap,
    			UniformsLib.bumpmap,
    			UniformsLib.normalmap,
    			UniformsLib.displacementmap,
    			UniformsLib.roughnessmap,
    			UniformsLib.metalnessmap,
    			UniformsLib.fog,
    			UniformsLib.lights,
    			{
    				emissive: { value: /*@__PURE__*/ new Color( 0x000000 ) },
    				roughness: { value: 1.0 },
    				metalness: { value: 0.0 },
    				envMapIntensity: { value: 1 } // temporary
    			}
    		] ),

    		vertexShader: ShaderChunk.meshphysical_vert,
    		fragmentShader: ShaderChunk.meshphysical_frag

    	},

    	toon: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.aomap,
    			UniformsLib.lightmap,
    			UniformsLib.emissivemap,
    			UniformsLib.bumpmap,
    			UniformsLib.normalmap,
    			UniformsLib.displacementmap,
    			UniformsLib.gradientmap,
    			UniformsLib.fog,
    			UniformsLib.lights,
    			{
    				emissive: { value: /*@__PURE__*/ new Color( 0x000000 ) }
    			}
    		] ),

    		vertexShader: ShaderChunk.meshtoon_vert,
    		fragmentShader: ShaderChunk.meshtoon_frag

    	},

    	matcap: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.bumpmap,
    			UniformsLib.normalmap,
    			UniformsLib.displacementmap,
    			UniformsLib.fog,
    			{
    				matcap: { value: null }
    			}
    		] ),

    		vertexShader: ShaderChunk.meshmatcap_vert,
    		fragmentShader: ShaderChunk.meshmatcap_frag

    	},

    	points: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.points,
    			UniformsLib.fog
    		] ),

    		vertexShader: ShaderChunk.points_vert,
    		fragmentShader: ShaderChunk.points_frag

    	},

    	dashed: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.fog,
    			{
    				scale: { value: 1 },
    				dashSize: { value: 1 },
    				totalSize: { value: 2 }
    			}
    		] ),

    		vertexShader: ShaderChunk.linedashed_vert,
    		fragmentShader: ShaderChunk.linedashed_frag

    	},

    	depth: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.displacementmap
    		] ),

    		vertexShader: ShaderChunk.depth_vert,
    		fragmentShader: ShaderChunk.depth_frag

    	},

    	normal: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.bumpmap,
    			UniformsLib.normalmap,
    			UniformsLib.displacementmap,
    			{
    				opacity: { value: 1.0 }
    			}
    		] ),

    		vertexShader: ShaderChunk.meshnormal_vert,
    		fragmentShader: ShaderChunk.meshnormal_frag

    	},

    	sprite: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.sprite,
    			UniformsLib.fog
    		] ),

    		vertexShader: ShaderChunk.sprite_vert,
    		fragmentShader: ShaderChunk.sprite_frag

    	},

    	background: {

    		uniforms: {
    			uvTransform: { value: /*@__PURE__*/ new Matrix3() },
    			t2D: { value: null },
    		},

    		vertexShader: ShaderChunk.background_vert,
    		fragmentShader: ShaderChunk.background_frag

    	},

    	cube: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.envmap,
    			{
    				opacity: { value: 1.0 }
    			}
    		] ),

    		vertexShader: ShaderChunk.cube_vert,
    		fragmentShader: ShaderChunk.cube_frag

    	},

    	equirect: {

    		uniforms: {
    			tEquirect: { value: null },
    		},

    		vertexShader: ShaderChunk.equirect_vert,
    		fragmentShader: ShaderChunk.equirect_frag

    	},

    	distanceRGBA: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.displacementmap,
    			{
    				referencePosition: { value: /*@__PURE__*/ new Vector3() },
    				nearDistance: { value: 1 },
    				farDistance: { value: 1000 }
    			}
    		] ),

    		vertexShader: ShaderChunk.distanceRGBA_vert,
    		fragmentShader: ShaderChunk.distanceRGBA_frag

    	},

    	shadow: {

    		uniforms: /*@__PURE__*/ mergeUniforms( [
    			UniformsLib.lights,
    			UniformsLib.fog,
    			{
    				color: { value: /*@__PURE__*/ new Color( 0x00000 ) },
    				opacity: { value: 1.0 }
    			},
    		] ),

    		vertexShader: ShaderChunk.shadow_vert,
    		fragmentShader: ShaderChunk.shadow_frag

    	}

    };

    ShaderLib.physical = {

    	uniforms: /*@__PURE__*/ mergeUniforms( [
    		ShaderLib.standard.uniforms,
    		{
    			clearcoat: { value: 0 },
    			clearcoatMap: { value: null },
    			clearcoatRoughness: { value: 0 },
    			clearcoatRoughnessMap: { value: null },
    			clearcoatNormalScale: { value: /*@__PURE__*/ new Vector2( 1, 1 ) },
    			clearcoatNormalMap: { value: null },
    			iridescence: { value: 0 },
    			iridescenceMap: { value: null },
    			iridescenceIOR: { value: 1.3 },
    			iridescenceThicknessMinimum: { value: 100 },
    			iridescenceThicknessMaximum: { value: 400 },
    			iridescenceThicknessMap: { value: null },
    			sheen: { value: 0 },
    			sheenColor: { value: /*@__PURE__*/ new Color( 0x000000 ) },
    			sheenColorMap: { value: null },
    			sheenRoughness: { value: 1 },
    			sheenRoughnessMap: { value: null },
    			transmission: { value: 0 },
    			transmissionMap: { value: null },
    			transmissionSamplerSize: { value: /*@__PURE__*/ new Vector2() },
    			transmissionSamplerMap: { value: null },
    			thickness: { value: 0 },
    			thicknessMap: { value: null },
    			attenuationDistance: { value: 0 },
    			attenuationColor: { value: /*@__PURE__*/ new Color( 0x000000 ) },
    			specularIntensity: { value: 1 },
    			specularIntensityMap: { value: null },
    			specularColor: { value: /*@__PURE__*/ new Color( 1, 1, 1 ) },
    			specularColorMap: { value: null },
    		}
    	] ),

    	vertexShader: ShaderChunk.meshphysical_vert,
    	fragmentShader: ShaderChunk.meshphysical_frag

    };

    function WebGLBackground( renderer, cubemaps, state, objects, alpha, premultipliedAlpha ) {

    	const clearColor = new Color( 0x000000 );
    	let clearAlpha = alpha === true ? 0 : 1;

    	let planeMesh;
    	let boxMesh;

    	let currentBackground = null;
    	let currentBackgroundVersion = 0;
    	let currentTonemapping = null;

    	function render( renderList, scene ) {

    		let forceClear = false;
    		let background = scene.isScene === true ? scene.background : null;

    		if ( background && background.isTexture ) {

    			background = cubemaps.get( background );

    		}

    		// Ignore background in AR
    		// TODO: Reconsider this.

    		const xr = renderer.xr;
    		const session = xr.getSession && xr.getSession();

    		if ( session && session.environmentBlendMode === 'additive' ) {

    			background = null;

    		}

    		if ( background === null ) {

    			setClear( clearColor, clearAlpha );

    		} else if ( background && background.isColor ) {

    			setClear( background, 1 );
    			forceClear = true;

    		}

    		if ( renderer.autoClear || forceClear ) {

    			renderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );

    		}

    		if ( background && ( background.isCubeTexture || background.mapping === CubeUVReflectionMapping ) ) {

    			if ( boxMesh === undefined ) {

    				boxMesh = new Mesh(
    					new BoxGeometry( 1, 1, 1 ),
    					new ShaderMaterial( {
    						name: 'BackgroundCubeMaterial',
    						uniforms: cloneUniforms( ShaderLib.cube.uniforms ),
    						vertexShader: ShaderLib.cube.vertexShader,
    						fragmentShader: ShaderLib.cube.fragmentShader,
    						side: BackSide,
    						depthTest: false,
    						depthWrite: false,
    						fog: false
    					} )
    				);

    				boxMesh.geometry.deleteAttribute( 'normal' );
    				boxMesh.geometry.deleteAttribute( 'uv' );

    				boxMesh.onBeforeRender = function ( renderer, scene, camera ) {

    					this.matrixWorld.copyPosition( camera.matrixWorld );

    				};

    				// add "envMap" material property so the renderer can evaluate it like for built-in materials
    				Object.defineProperty( boxMesh.material, 'envMap', {

    					get: function () {

    						return this.uniforms.envMap.value;

    					}

    				} );

    				objects.update( boxMesh );

    			}

    			boxMesh.material.uniforms.envMap.value = background;
    			boxMesh.material.uniforms.flipEnvMap.value = ( background.isCubeTexture && background.isRenderTargetTexture === false ) ? - 1 : 1;

    			if ( currentBackground !== background ||
    				currentBackgroundVersion !== background.version ||
    				currentTonemapping !== renderer.toneMapping ) {

    				boxMesh.material.needsUpdate = true;

    				currentBackground = background;
    				currentBackgroundVersion = background.version;
    				currentTonemapping = renderer.toneMapping;

    			}

    			boxMesh.layers.enableAll();

    			// push to the pre-sorted opaque render list
    			renderList.unshift( boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null );

    		} else if ( background && background.isTexture ) {

    			if ( planeMesh === undefined ) {

    				planeMesh = new Mesh(
    					new PlaneGeometry( 2, 2 ),
    					new ShaderMaterial( {
    						name: 'BackgroundMaterial',
    						uniforms: cloneUniforms( ShaderLib.background.uniforms ),
    						vertexShader: ShaderLib.background.vertexShader,
    						fragmentShader: ShaderLib.background.fragmentShader,
    						side: FrontSide,
    						depthTest: false,
    						depthWrite: false,
    						fog: false
    					} )
    				);

    				planeMesh.geometry.deleteAttribute( 'normal' );

    				// add "map" material property so the renderer can evaluate it like for built-in materials
    				Object.defineProperty( planeMesh.material, 'map', {

    					get: function () {

    						return this.uniforms.t2D.value;

    					}

    				} );

    				objects.update( planeMesh );

    			}

    			planeMesh.material.uniforms.t2D.value = background;

    			if ( background.matrixAutoUpdate === true ) {

    				background.updateMatrix();

    			}

    			planeMesh.material.uniforms.uvTransform.value.copy( background.matrix );

    			if ( currentBackground !== background ||
    				currentBackgroundVersion !== background.version ||
    				currentTonemapping !== renderer.toneMapping ) {

    				planeMesh.material.needsUpdate = true;

    				currentBackground = background;
    				currentBackgroundVersion = background.version;
    				currentTonemapping = renderer.toneMapping;

    			}

    			planeMesh.layers.enableAll();

    			// push to the pre-sorted opaque render list
    			renderList.unshift( planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null );

    		}

    	}

    	function setClear( color, alpha ) {

    		state.buffers.color.setClear( color.r, color.g, color.b, alpha, premultipliedAlpha );

    	}

    	return {

    		getClearColor: function () {

    			return clearColor;

    		},
    		setClearColor: function ( color, alpha = 1 ) {

    			clearColor.set( color );
    			clearAlpha = alpha;
    			setClear( clearColor, clearAlpha );

    		},
    		getClearAlpha: function () {

    			return clearAlpha;

    		},
    		setClearAlpha: function ( alpha ) {

    			clearAlpha = alpha;
    			setClear( clearColor, clearAlpha );

    		},
    		render: render

    	};

    }

    function WebGLBindingStates( gl, extensions, attributes, capabilities ) {

    	const maxVertexAttributes = gl.getParameter( 34921 );

    	const extension = capabilities.isWebGL2 ? null : extensions.get( 'OES_vertex_array_object' );
    	const vaoAvailable = capabilities.isWebGL2 || extension !== null;

    	const bindingStates = {};

    	const defaultState = createBindingState( null );
    	let currentState = defaultState;
    	let forceUpdate = false;

    	function setup( object, material, program, geometry, index ) {

    		let updateBuffers = false;

    		if ( vaoAvailable ) {

    			const state = getBindingState( geometry, program, material );

    			if ( currentState !== state ) {

    				currentState = state;
    				bindVertexArrayObject( currentState.object );

    			}

    			updateBuffers = needsUpdate( object, geometry, program, index );

    			if ( updateBuffers ) saveCache( object, geometry, program, index );

    		} else {

    			const wireframe = ( material.wireframe === true );

    			if ( currentState.geometry !== geometry.id ||
    				currentState.program !== program.id ||
    				currentState.wireframe !== wireframe ) {

    				currentState.geometry = geometry.id;
    				currentState.program = program.id;
    				currentState.wireframe = wireframe;

    				updateBuffers = true;

    			}

    		}

    		if ( index !== null ) {

    			attributes.update( index, 34963 );

    		}

    		if ( updateBuffers || forceUpdate ) {

    			forceUpdate = false;

    			setupVertexAttributes( object, material, program, geometry );

    			if ( index !== null ) {

    				gl.bindBuffer( 34963, attributes.get( index ).buffer );

    			}

    		}

    	}

    	function createVertexArrayObject() {

    		if ( capabilities.isWebGL2 ) return gl.createVertexArray();

    		return extension.createVertexArrayOES();

    	}

    	function bindVertexArrayObject( vao ) {

    		if ( capabilities.isWebGL2 ) return gl.bindVertexArray( vao );

    		return extension.bindVertexArrayOES( vao );

    	}

    	function deleteVertexArrayObject( vao ) {

    		if ( capabilities.isWebGL2 ) return gl.deleteVertexArray( vao );

    		return extension.deleteVertexArrayOES( vao );

    	}

    	function getBindingState( geometry, program, material ) {

    		const wireframe = ( material.wireframe === true );

    		let programMap = bindingStates[ geometry.id ];

    		if ( programMap === undefined ) {

    			programMap = {};
    			bindingStates[ geometry.id ] = programMap;

    		}

    		let stateMap = programMap[ program.id ];

    		if ( stateMap === undefined ) {

    			stateMap = {};
    			programMap[ program.id ] = stateMap;

    		}

    		let state = stateMap[ wireframe ];

    		if ( state === undefined ) {

    			state = createBindingState( createVertexArrayObject() );
    			stateMap[ wireframe ] = state;

    		}

    		return state;

    	}

    	function createBindingState( vao ) {

    		const newAttributes = [];
    		const enabledAttributes = [];
    		const attributeDivisors = [];

    		for ( let i = 0; i < maxVertexAttributes; i ++ ) {

    			newAttributes[ i ] = 0;
    			enabledAttributes[ i ] = 0;
    			attributeDivisors[ i ] = 0;

    		}

    		return {

    			// for backward compatibility on non-VAO support browser
    			geometry: null,
    			program: null,
    			wireframe: false,

    			newAttributes: newAttributes,
    			enabledAttributes: enabledAttributes,
    			attributeDivisors: attributeDivisors,
    			object: vao,
    			attributes: {},
    			index: null

    		};

    	}

    	function needsUpdate( object, geometry, program, index ) {

    		const cachedAttributes = currentState.attributes;
    		const geometryAttributes = geometry.attributes;

    		let attributesNum = 0;

    		const programAttributes = program.getAttributes();

    		for ( const name in programAttributes ) {

    			const programAttribute = programAttributes[ name ];

    			if ( programAttribute.location >= 0 ) {

    				const cachedAttribute = cachedAttributes[ name ];
    				let geometryAttribute = geometryAttributes[ name ];

    				if ( geometryAttribute === undefined ) {

    					if ( name === 'instanceMatrix' && object.instanceMatrix ) geometryAttribute = object.instanceMatrix;
    					if ( name === 'instanceColor' && object.instanceColor ) geometryAttribute = object.instanceColor;

    				}

    				if ( cachedAttribute === undefined ) return true;

    				if ( cachedAttribute.attribute !== geometryAttribute ) return true;

    				if ( geometryAttribute && cachedAttribute.data !== geometryAttribute.data ) return true;

    				attributesNum ++;

    			}

    		}

    		if ( currentState.attributesNum !== attributesNum ) return true;

    		if ( currentState.index !== index ) return true;

    		return false;

    	}

    	function saveCache( object, geometry, program, index ) {

    		const cache = {};
    		const attributes = geometry.attributes;
    		let attributesNum = 0;

    		const programAttributes = program.getAttributes();

    		for ( const name in programAttributes ) {

    			const programAttribute = programAttributes[ name ];

    			if ( programAttribute.location >= 0 ) {

    				let attribute = attributes[ name ];

    				if ( attribute === undefined ) {

    					if ( name === 'instanceMatrix' && object.instanceMatrix ) attribute = object.instanceMatrix;
    					if ( name === 'instanceColor' && object.instanceColor ) attribute = object.instanceColor;

    				}

    				const data = {};
    				data.attribute = attribute;

    				if ( attribute && attribute.data ) {

    					data.data = attribute.data;

    				}

    				cache[ name ] = data;

    				attributesNum ++;

    			}

    		}

    		currentState.attributes = cache;
    		currentState.attributesNum = attributesNum;

    		currentState.index = index;

    	}

    	function initAttributes() {

    		const newAttributes = currentState.newAttributes;

    		for ( let i = 0, il = newAttributes.length; i < il; i ++ ) {

    			newAttributes[ i ] = 0;

    		}

    	}

    	function enableAttribute( attribute ) {

    		enableAttributeAndDivisor( attribute, 0 );

    	}

    	function enableAttributeAndDivisor( attribute, meshPerAttribute ) {

    		const newAttributes = currentState.newAttributes;
    		const enabledAttributes = currentState.enabledAttributes;
    		const attributeDivisors = currentState.attributeDivisors;

    		newAttributes[ attribute ] = 1;

    		if ( enabledAttributes[ attribute ] === 0 ) {

    			gl.enableVertexAttribArray( attribute );
    			enabledAttributes[ attribute ] = 1;

    		}

    		if ( attributeDivisors[ attribute ] !== meshPerAttribute ) {

    			const extension = capabilities.isWebGL2 ? gl : extensions.get( 'ANGLE_instanced_arrays' );

    			extension[ capabilities.isWebGL2 ? 'vertexAttribDivisor' : 'vertexAttribDivisorANGLE' ]( attribute, meshPerAttribute );
    			attributeDivisors[ attribute ] = meshPerAttribute;

    		}

    	}

    	function disableUnusedAttributes() {

    		const newAttributes = currentState.newAttributes;
    		const enabledAttributes = currentState.enabledAttributes;

    		for ( let i = 0, il = enabledAttributes.length; i < il; i ++ ) {

    			if ( enabledAttributes[ i ] !== newAttributes[ i ] ) {

    				gl.disableVertexAttribArray( i );
    				enabledAttributes[ i ] = 0;

    			}

    		}

    	}

    	function vertexAttribPointer( index, size, type, normalized, stride, offset ) {

    		if ( capabilities.isWebGL2 === true && ( type === 5124 || type === 5125 ) ) {

    			gl.vertexAttribIPointer( index, size, type, stride, offset );

    		} else {

    			gl.vertexAttribPointer( index, size, type, normalized, stride, offset );

    		}

    	}

    	function setupVertexAttributes( object, material, program, geometry ) {

    		if ( capabilities.isWebGL2 === false && ( object.isInstancedMesh || geometry.isInstancedBufferGeometry ) ) {

    			if ( extensions.get( 'ANGLE_instanced_arrays' ) === null ) return;

    		}

    		initAttributes();

    		const geometryAttributes = geometry.attributes;

    		const programAttributes = program.getAttributes();

    		const materialDefaultAttributeValues = material.defaultAttributeValues;

    		for ( const name in programAttributes ) {

    			const programAttribute = programAttributes[ name ];

    			if ( programAttribute.location >= 0 ) {

    				let geometryAttribute = geometryAttributes[ name ];

    				if ( geometryAttribute === undefined ) {

    					if ( name === 'instanceMatrix' && object.instanceMatrix ) geometryAttribute = object.instanceMatrix;
    					if ( name === 'instanceColor' && object.instanceColor ) geometryAttribute = object.instanceColor;

    				}

    				if ( geometryAttribute !== undefined ) {

    					const normalized = geometryAttribute.normalized;
    					const size = geometryAttribute.itemSize;

    					const attribute = attributes.get( geometryAttribute );

    					// TODO Attribute may not be available on context restore

    					if ( attribute === undefined ) continue;

    					const buffer = attribute.buffer;
    					const type = attribute.type;
    					const bytesPerElement = attribute.bytesPerElement;

    					if ( geometryAttribute.isInterleavedBufferAttribute ) {

    						const data = geometryAttribute.data;
    						const stride = data.stride;
    						const offset = geometryAttribute.offset;

    						if ( data.isInstancedInterleavedBuffer ) {

    							for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

    								enableAttributeAndDivisor( programAttribute.location + i, data.meshPerAttribute );

    							}

    							if ( object.isInstancedMesh !== true && geometry._maxInstanceCount === undefined ) {

    								geometry._maxInstanceCount = data.meshPerAttribute * data.count;

    							}

    						} else {

    							for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

    								enableAttribute( programAttribute.location + i );

    							}

    						}

    						gl.bindBuffer( 34962, buffer );

    						for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

    							vertexAttribPointer(
    								programAttribute.location + i,
    								size / programAttribute.locationSize,
    								type,
    								normalized,
    								stride * bytesPerElement,
    								( offset + ( size / programAttribute.locationSize ) * i ) * bytesPerElement
    							);

    						}

    					} else {

    						if ( geometryAttribute.isInstancedBufferAttribute ) {

    							for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

    								enableAttributeAndDivisor( programAttribute.location + i, geometryAttribute.meshPerAttribute );

    							}

    							if ( object.isInstancedMesh !== true && geometry._maxInstanceCount === undefined ) {

    								geometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;

    							}

    						} else {

    							for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

    								enableAttribute( programAttribute.location + i );

    							}

    						}

    						gl.bindBuffer( 34962, buffer );

    						for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

    							vertexAttribPointer(
    								programAttribute.location + i,
    								size / programAttribute.locationSize,
    								type,
    								normalized,
    								size * bytesPerElement,
    								( size / programAttribute.locationSize ) * i * bytesPerElement
    							);

    						}

    					}

    				} else if ( materialDefaultAttributeValues !== undefined ) {

    					const value = materialDefaultAttributeValues[ name ];

    					if ( value !== undefined ) {

    						switch ( value.length ) {

    							case 2:
    								gl.vertexAttrib2fv( programAttribute.location, value );
    								break;

    							case 3:
    								gl.vertexAttrib3fv( programAttribute.location, value );
    								break;

    							case 4:
    								gl.vertexAttrib4fv( programAttribute.location, value );
    								break;

    							default:
    								gl.vertexAttrib1fv( programAttribute.location, value );

    						}

    					}

    				}

    			}

    		}

    		disableUnusedAttributes();

    	}

    	function dispose() {

    		reset();

    		for ( const geometryId in bindingStates ) {

    			const programMap = bindingStates[ geometryId ];

    			for ( const programId in programMap ) {

    				const stateMap = programMap[ programId ];

    				for ( const wireframe in stateMap ) {

    					deleteVertexArrayObject( stateMap[ wireframe ].object );

    					delete stateMap[ wireframe ];

    				}

    				delete programMap[ programId ];

    			}

    			delete bindingStates[ geometryId ];

    		}

    	}

    	function releaseStatesOfGeometry( geometry ) {

    		if ( bindingStates[ geometry.id ] === undefined ) return;

    		const programMap = bindingStates[ geometry.id ];

    		for ( const programId in programMap ) {

    			const stateMap = programMap[ programId ];

    			for ( const wireframe in stateMap ) {

    				deleteVertexArrayObject( stateMap[ wireframe ].object );

    				delete stateMap[ wireframe ];

    			}

    			delete programMap[ programId ];

    		}

    		delete bindingStates[ geometry.id ];

    	}

    	function releaseStatesOfProgram( program ) {

    		for ( const geometryId in bindingStates ) {

    			const programMap = bindingStates[ geometryId ];

    			if ( programMap[ program.id ] === undefined ) continue;

    			const stateMap = programMap[ program.id ];

    			for ( const wireframe in stateMap ) {

    				deleteVertexArrayObject( stateMap[ wireframe ].object );

    				delete stateMap[ wireframe ];

    			}

    			delete programMap[ program.id ];

    		}

    	}

    	function reset() {

    		resetDefaultState();
    		forceUpdate = true;

    		if ( currentState === defaultState ) return;

    		currentState = defaultState;
    		bindVertexArrayObject( currentState.object );

    	}

    	// for backward-compatibility

    	function resetDefaultState() {

    		defaultState.geometry = null;
    		defaultState.program = null;
    		defaultState.wireframe = false;

    	}

    	return {

    		setup: setup,
    		reset: reset,
    		resetDefaultState: resetDefaultState,
    		dispose: dispose,
    		releaseStatesOfGeometry: releaseStatesOfGeometry,
    		releaseStatesOfProgram: releaseStatesOfProgram,

    		initAttributes: initAttributes,
    		enableAttribute: enableAttribute,
    		disableUnusedAttributes: disableUnusedAttributes

    	};

    }

    function WebGLBufferRenderer( gl, extensions, info, capabilities ) {

    	const isWebGL2 = capabilities.isWebGL2;

    	let mode;

    	function setMode( value ) {

    		mode = value;

    	}

    	function render( start, count ) {

    		gl.drawArrays( mode, start, count );

    		info.update( count, mode, 1 );

    	}

    	function renderInstances( start, count, primcount ) {

    		if ( primcount === 0 ) return;

    		let extension, methodName;

    		if ( isWebGL2 ) {

    			extension = gl;
    			methodName = 'drawArraysInstanced';

    		} else {

    			extension = extensions.get( 'ANGLE_instanced_arrays' );
    			methodName = 'drawArraysInstancedANGLE';

    			if ( extension === null ) {

    				console.error( 'THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
    				return;

    			}

    		}

    		extension[ methodName ]( mode, start, count, primcount );

    		info.update( count, mode, primcount );

    	}

    	//

    	this.setMode = setMode;
    	this.render = render;
    	this.renderInstances = renderInstances;

    }

    function WebGLCapabilities( gl, extensions, parameters ) {

    	let maxAnisotropy;

    	function getMaxAnisotropy() {

    		if ( maxAnisotropy !== undefined ) return maxAnisotropy;

    		if ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {

    			const extension = extensions.get( 'EXT_texture_filter_anisotropic' );

    			maxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );

    		} else {

    			maxAnisotropy = 0;

    		}

    		return maxAnisotropy;

    	}

    	function getMaxPrecision( precision ) {

    		if ( precision === 'highp' ) {

    			if ( gl.getShaderPrecisionFormat( 35633, 36338 ).precision > 0 &&
    				gl.getShaderPrecisionFormat( 35632, 36338 ).precision > 0 ) {

    				return 'highp';

    			}

    			precision = 'mediump';

    		}

    		if ( precision === 'mediump' ) {

    			if ( gl.getShaderPrecisionFormat( 35633, 36337 ).precision > 0 &&
    				gl.getShaderPrecisionFormat( 35632, 36337 ).precision > 0 ) {

    				return 'mediump';

    			}

    		}

    		return 'lowp';

    	}

    	const isWebGL2 = ( typeof WebGL2RenderingContext !== 'undefined' && gl instanceof WebGL2RenderingContext ) ||
    		( typeof WebGL2ComputeRenderingContext !== 'undefined' && gl instanceof WebGL2ComputeRenderingContext );

    	let precision = parameters.precision !== undefined ? parameters.precision : 'highp';
    	const maxPrecision = getMaxPrecision( precision );

    	if ( maxPrecision !== precision ) {

    		console.warn( 'THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.' );
    		precision = maxPrecision;

    	}

    	const drawBuffers = isWebGL2 || extensions.has( 'WEBGL_draw_buffers' );

    	const logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;

    	const maxTextures = gl.getParameter( 34930 );
    	const maxVertexTextures = gl.getParameter( 35660 );
    	const maxTextureSize = gl.getParameter( 3379 );
    	const maxCubemapSize = gl.getParameter( 34076 );

    	const maxAttributes = gl.getParameter( 34921 );
    	const maxVertexUniforms = gl.getParameter( 36347 );
    	const maxVaryings = gl.getParameter( 36348 );
    	const maxFragmentUniforms = gl.getParameter( 36349 );

    	const vertexTextures = maxVertexTextures > 0;
    	const floatFragmentTextures = isWebGL2 || extensions.has( 'OES_texture_float' );
    	const floatVertexTextures = vertexTextures && floatFragmentTextures;

    	const maxSamples = isWebGL2 ? gl.getParameter( 36183 ) : 0;

    	return {

    		isWebGL2: isWebGL2,

    		drawBuffers: drawBuffers,

    		getMaxAnisotropy: getMaxAnisotropy,
    		getMaxPrecision: getMaxPrecision,

    		precision: precision,
    		logarithmicDepthBuffer: logarithmicDepthBuffer,

    		maxTextures: maxTextures,
    		maxVertexTextures: maxVertexTextures,
    		maxTextureSize: maxTextureSize,
    		maxCubemapSize: maxCubemapSize,

    		maxAttributes: maxAttributes,
    		maxVertexUniforms: maxVertexUniforms,
    		maxVaryings: maxVaryings,
    		maxFragmentUniforms: maxFragmentUniforms,

    		vertexTextures: vertexTextures,
    		floatFragmentTextures: floatFragmentTextures,
    		floatVertexTextures: floatVertexTextures,

    		maxSamples: maxSamples

    	};

    }

    function WebGLClipping( properties ) {

    	const scope = this;

    	let globalState = null,
    		numGlobalPlanes = 0,
    		localClippingEnabled = false,
    		renderingShadows = false;

    	const plane = new Plane(),
    		viewNormalMatrix = new Matrix3(),

    		uniform = { value: null, needsUpdate: false };

    	this.uniform = uniform;
    	this.numPlanes = 0;
    	this.numIntersection = 0;

    	this.init = function ( planes, enableLocalClipping, camera ) {

    		const enabled =
    			planes.length !== 0 ||
    			enableLocalClipping ||
    			// enable state of previous frame - the clipping code has to
    			// run another frame in order to reset the state:
    			numGlobalPlanes !== 0 ||
    			localClippingEnabled;

    		localClippingEnabled = enableLocalClipping;

    		globalState = projectPlanes( planes, camera, 0 );
    		numGlobalPlanes = planes.length;

    		return enabled;

    	};

    	this.beginShadows = function () {

    		renderingShadows = true;
    		projectPlanes( null );

    	};

    	this.endShadows = function () {

    		renderingShadows = false;
    		resetGlobalState();

    	};

    	this.setState = function ( material, camera, useCache ) {

    		const planes = material.clippingPlanes,
    			clipIntersection = material.clipIntersection,
    			clipShadows = material.clipShadows;

    		const materialProperties = properties.get( material );

    		if ( ! localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && ! clipShadows ) {

    			// there's no local clipping

    			if ( renderingShadows ) {

    				// there's no global clipping

    				projectPlanes( null );

    			} else {

    				resetGlobalState();

    			}

    		} else {

    			const nGlobal = renderingShadows ? 0 : numGlobalPlanes,
    				lGlobal = nGlobal * 4;

    			let dstArray = materialProperties.clippingState || null;

    			uniform.value = dstArray; // ensure unique state

    			dstArray = projectPlanes( planes, camera, lGlobal, useCache );

    			for ( let i = 0; i !== lGlobal; ++ i ) {

    				dstArray[ i ] = globalState[ i ];

    			}

    			materialProperties.clippingState = dstArray;
    			this.numIntersection = clipIntersection ? this.numPlanes : 0;
    			this.numPlanes += nGlobal;

    		}


    	};

    	function resetGlobalState() {

    		if ( uniform.value !== globalState ) {

    			uniform.value = globalState;
    			uniform.needsUpdate = numGlobalPlanes > 0;

    		}

    		scope.numPlanes = numGlobalPlanes;
    		scope.numIntersection = 0;

    	}

    	function projectPlanes( planes, camera, dstOffset, skipTransform ) {

    		const nPlanes = planes !== null ? planes.length : 0;
    		let dstArray = null;

    		if ( nPlanes !== 0 ) {

    			dstArray = uniform.value;

    			if ( skipTransform !== true || dstArray === null ) {

    				const flatSize = dstOffset + nPlanes * 4,
    					viewMatrix = camera.matrixWorldInverse;

    				viewNormalMatrix.getNormalMatrix( viewMatrix );

    				if ( dstArray === null || dstArray.length < flatSize ) {

    					dstArray = new Float32Array( flatSize );

    				}

    				for ( let i = 0, i4 = dstOffset; i !== nPlanes; ++ i, i4 += 4 ) {

    					plane.copy( planes[ i ] ).applyMatrix4( viewMatrix, viewNormalMatrix );

    					plane.normal.toArray( dstArray, i4 );
    					dstArray[ i4 + 3 ] = plane.constant;

    				}

    			}

    			uniform.value = dstArray;
    			uniform.needsUpdate = true;

    		}

    		scope.numPlanes = nPlanes;
    		scope.numIntersection = 0;

    		return dstArray;

    	}

    }

    function WebGLCubeMaps( renderer ) {

    	let cubemaps = new WeakMap();

    	function mapTextureMapping( texture, mapping ) {

    		if ( mapping === EquirectangularReflectionMapping ) {

    			texture.mapping = CubeReflectionMapping;

    		} else if ( mapping === EquirectangularRefractionMapping ) {

    			texture.mapping = CubeRefractionMapping;

    		}

    		return texture;

    	}

    	function get( texture ) {

    		if ( texture && texture.isTexture && texture.isRenderTargetTexture === false ) {

    			const mapping = texture.mapping;

    			if ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping ) {

    				if ( cubemaps.has( texture ) ) {

    					const cubemap = cubemaps.get( texture ).texture;
    					return mapTextureMapping( cubemap, texture.mapping );

    				} else {

    					const image = texture.image;

    					if ( image && image.height > 0 ) {

    						const renderTarget = new WebGLCubeRenderTarget( image.height / 2 );
    						renderTarget.fromEquirectangularTexture( renderer, texture );
    						cubemaps.set( texture, renderTarget );

    						texture.addEventListener( 'dispose', onTextureDispose );

    						return mapTextureMapping( renderTarget.texture, texture.mapping );

    					} else {

    						// image not yet ready. try the conversion next frame

    						return null;

    					}

    				}

    			}

    		}

    		return texture;

    	}

    	function onTextureDispose( event ) {

    		const texture = event.target;

    		texture.removeEventListener( 'dispose', onTextureDispose );

    		const cubemap = cubemaps.get( texture );

    		if ( cubemap !== undefined ) {

    			cubemaps.delete( texture );
    			cubemap.dispose();

    		}

    	}

    	function dispose() {

    		cubemaps = new WeakMap();

    	}

    	return {
    		get: get,
    		dispose: dispose
    	};

    }

    class OrthographicCamera extends Camera {

    	constructor( left = - 1, right = 1, top = 1, bottom = - 1, near = 0.1, far = 2000 ) {

    		super();

    		this.isOrthographicCamera = true;

    		this.type = 'OrthographicCamera';

    		this.zoom = 1;
    		this.view = null;

    		this.left = left;
    		this.right = right;
    		this.top = top;
    		this.bottom = bottom;

    		this.near = near;
    		this.far = far;

    		this.updateProjectionMatrix();

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		this.left = source.left;
    		this.right = source.right;
    		this.top = source.top;
    		this.bottom = source.bottom;
    		this.near = source.near;
    		this.far = source.far;

    		this.zoom = source.zoom;
    		this.view = source.view === null ? null : Object.assign( {}, source.view );

    		return this;

    	}

    	setViewOffset( fullWidth, fullHeight, x, y, width, height ) {

    		if ( this.view === null ) {

    			this.view = {
    				enabled: true,
    				fullWidth: 1,
    				fullHeight: 1,
    				offsetX: 0,
    				offsetY: 0,
    				width: 1,
    				height: 1
    			};

    		}

    		this.view.enabled = true;
    		this.view.fullWidth = fullWidth;
    		this.view.fullHeight = fullHeight;
    		this.view.offsetX = x;
    		this.view.offsetY = y;
    		this.view.width = width;
    		this.view.height = height;

    		this.updateProjectionMatrix();

    	}

    	clearViewOffset() {

    		if ( this.view !== null ) {

    			this.view.enabled = false;

    		}

    		this.updateProjectionMatrix();

    	}

    	updateProjectionMatrix() {

    		const dx = ( this.right - this.left ) / ( 2 * this.zoom );
    		const dy = ( this.top - this.bottom ) / ( 2 * this.zoom );
    		const cx = ( this.right + this.left ) / 2;
    		const cy = ( this.top + this.bottom ) / 2;

    		let left = cx - dx;
    		let right = cx + dx;
    		let top = cy + dy;
    		let bottom = cy - dy;

    		if ( this.view !== null && this.view.enabled ) {

    			const scaleW = ( this.right - this.left ) / this.view.fullWidth / this.zoom;
    			const scaleH = ( this.top - this.bottom ) / this.view.fullHeight / this.zoom;

    			left += scaleW * this.view.offsetX;
    			right = left + scaleW * this.view.width;
    			top -= scaleH * this.view.offsetY;
    			bottom = top - scaleH * this.view.height;

    		}

    		this.projectionMatrix.makeOrthographic( left, right, top, bottom, this.near, this.far );

    		this.projectionMatrixInverse.copy( this.projectionMatrix ).invert();

    	}

    	toJSON( meta ) {

    		const data = super.toJSON( meta );

    		data.object.zoom = this.zoom;
    		data.object.left = this.left;
    		data.object.right = this.right;
    		data.object.top = this.top;
    		data.object.bottom = this.bottom;
    		data.object.near = this.near;
    		data.object.far = this.far;

    		if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );

    		return data;

    	}

    }

    const LOD_MIN = 4;

    // The standard deviations (radians) associated with the extra mips. These are
    // chosen to approximate a Trowbridge-Reitz distribution function times the
    // geometric shadowing function. These sigma values squared must match the
    // variance #defines in cube_uv_reflection_fragment.glsl.js.
    const EXTRA_LOD_SIGMA = [ 0.125, 0.215, 0.35, 0.446, 0.526, 0.582 ];

    // The maximum length of the blur for loop. Smaller sigmas will use fewer
    // samples and exit early, but not recompile the shader.
    const MAX_SAMPLES = 20;

    const _flatCamera = /*@__PURE__*/ new OrthographicCamera();
    const _clearColor = /*@__PURE__*/ new Color();
    let _oldTarget = null;

    // Golden Ratio
    const PHI = ( 1 + Math.sqrt( 5 ) ) / 2;
    const INV_PHI = 1 / PHI;

    // Vertices of a dodecahedron (except the opposites, which represent the
    // same axis), used as axis directions evenly spread on a sphere.
    const _axisDirections = [
    	/*@__PURE__*/ new Vector3( 1, 1, 1 ),
    	/*@__PURE__*/ new Vector3( - 1, 1, 1 ),
    	/*@__PURE__*/ new Vector3( 1, 1, - 1 ),
    	/*@__PURE__*/ new Vector3( - 1, 1, - 1 ),
    	/*@__PURE__*/ new Vector3( 0, PHI, INV_PHI ),
    	/*@__PURE__*/ new Vector3( 0, PHI, - INV_PHI ),
    	/*@__PURE__*/ new Vector3( INV_PHI, 0, PHI ),
    	/*@__PURE__*/ new Vector3( - INV_PHI, 0, PHI ),
    	/*@__PURE__*/ new Vector3( PHI, INV_PHI, 0 ),
    	/*@__PURE__*/ new Vector3( - PHI, INV_PHI, 0 ) ];

    /**
     * This class generates a Prefiltered, Mipmapped Radiance Environment Map
     * (PMREM) from a cubeMap environment texture. This allows different levels of
     * blur to be quickly accessed based on material roughness. It is packed into a
     * special CubeUV format that allows us to perform custom interpolation so that
     * we can support nonlinear formats such as RGBE. Unlike a traditional mipmap
     * chain, it only goes down to the LOD_MIN level (above), and then creates extra
     * even more filtered 'mips' at the same LOD_MIN resolution, associated with
     * higher roughness levels. In this way we maintain resolution to smoothly
     * interpolate diffuse lighting while limiting sampling computation.
     *
     * Paper: Fast, Accurate Image-Based Lighting
     * https://drive.google.com/file/d/15y8r_UpKlU9SvV4ILb0C3qCPecS8pvLz/view
    */

    class PMREMGenerator {

    	constructor( renderer ) {

    		this._renderer = renderer;
    		this._pingPongRenderTarget = null;

    		this._lodMax = 0;
    		this._cubeSize = 0;
    		this._lodPlanes = [];
    		this._sizeLods = [];
    		this._sigmas = [];

    		this._blurMaterial = null;
    		this._cubemapMaterial = null;
    		this._equirectMaterial = null;

    		this._compileMaterial( this._blurMaterial );

    	}

    	/**
    	 * Generates a PMREM from a supplied Scene, which can be faster than using an
    	 * image if networking bandwidth is low. Optional sigma specifies a blur radius
    	 * in radians to be applied to the scene before PMREM generation. Optional near
    	 * and far planes ensure the scene is rendered in its entirety (the cubeCamera
    	 * is placed at the origin).
    	 */
    	fromScene( scene, sigma = 0, near = 0.1, far = 100 ) {

    		_oldTarget = this._renderer.getRenderTarget();

    		this._setSize( 256 );

    		const cubeUVRenderTarget = this._allocateTargets();
    		cubeUVRenderTarget.depthBuffer = true;

    		this._sceneToCubeUV( scene, near, far, cubeUVRenderTarget );

    		if ( sigma > 0 ) {

    			this._blur( cubeUVRenderTarget, 0, 0, sigma );

    		}

    		this._applyPMREM( cubeUVRenderTarget );
    		this._cleanup( cubeUVRenderTarget );

    		return cubeUVRenderTarget;

    	}

    	/**
    	 * Generates a PMREM from an equirectangular texture, which can be either LDR
    	 * or HDR. The ideal input image size is 1k (1024 x 512),
    	 * as this matches best with the 256 x 256 cubemap output.
    	 */
    	fromEquirectangular( equirectangular, renderTarget = null ) {

    		return this._fromTexture( equirectangular, renderTarget );

    	}

    	/**
    	 * Generates a PMREM from an cubemap texture, which can be either LDR
    	 * or HDR. The ideal input cube size is 256 x 256,
    	 * as this matches best with the 256 x 256 cubemap output.
    	 */
    	fromCubemap( cubemap, renderTarget = null ) {

    		return this._fromTexture( cubemap, renderTarget );

    	}

    	/**
    	 * Pre-compiles the cubemap shader. You can get faster start-up by invoking this method during
    	 * your texture's network fetch for increased concurrency.
    	 */
    	compileCubemapShader() {

    		if ( this._cubemapMaterial === null ) {

    			this._cubemapMaterial = _getCubemapMaterial();
    			this._compileMaterial( this._cubemapMaterial );

    		}

    	}

    	/**
    	 * Pre-compiles the equirectangular shader. You can get faster start-up by invoking this method during
    	 * your texture's network fetch for increased concurrency.
    	 */
    	compileEquirectangularShader() {

    		if ( this._equirectMaterial === null ) {

    			this._equirectMaterial = _getEquirectMaterial();
    			this._compileMaterial( this._equirectMaterial );

    		}

    	}

    	/**
    	 * Disposes of the PMREMGenerator's internal memory. Note that PMREMGenerator is a static class,
    	 * so you should not need more than one PMREMGenerator object. If you do, calling dispose() on
    	 * one of them will cause any others to also become unusable.
    	 */
    	dispose() {

    		this._dispose();

    		if ( this._cubemapMaterial !== null ) this._cubemapMaterial.dispose();
    		if ( this._equirectMaterial !== null ) this._equirectMaterial.dispose();

    	}

    	// private interface

    	_setSize( cubeSize ) {

    		this._lodMax = Math.floor( Math.log2( cubeSize ) );
    		this._cubeSize = Math.pow( 2, this._lodMax );

    	}

    	_dispose() {

    		if ( this._blurMaterial !== null ) this._blurMaterial.dispose();

    		if ( this._pingPongRenderTarget !== null ) this._pingPongRenderTarget.dispose();

    		for ( let i = 0; i < this._lodPlanes.length; i ++ ) {

    			this._lodPlanes[ i ].dispose();

    		}

    	}

    	_cleanup( outputTarget ) {

    		this._renderer.setRenderTarget( _oldTarget );
    		outputTarget.scissorTest = false;
    		_setViewport( outputTarget, 0, 0, outputTarget.width, outputTarget.height );

    	}

    	_fromTexture( texture, renderTarget ) {

    		if ( texture.mapping === CubeReflectionMapping || texture.mapping === CubeRefractionMapping ) {

    			this._setSize( texture.image.length === 0 ? 16 : ( texture.image[ 0 ].width || texture.image[ 0 ].image.width ) );

    		} else { // Equirectangular

    			this._setSize( texture.image.width / 4 );

    		}

    		_oldTarget = this._renderer.getRenderTarget();

    		const cubeUVRenderTarget = renderTarget || this._allocateTargets();
    		this._textureToCubeUV( texture, cubeUVRenderTarget );
    		this._applyPMREM( cubeUVRenderTarget );
    		this._cleanup( cubeUVRenderTarget );

    		return cubeUVRenderTarget;

    	}

    	_allocateTargets() {

    		const width = 3 * Math.max( this._cubeSize, 16 * 7 );
    		const height = 4 * this._cubeSize;

    		const params = {
    			magFilter: LinearFilter,
    			minFilter: LinearFilter,
    			generateMipmaps: false,
    			type: HalfFloatType,
    			format: RGBAFormat,
    			encoding: LinearEncoding,
    			depthBuffer: false
    		};

    		const cubeUVRenderTarget = _createRenderTarget( width, height, params );

    		if ( this._pingPongRenderTarget === null || this._pingPongRenderTarget.width !== width ) {

    			if ( this._pingPongRenderTarget !== null ) {

    				this._dispose();

    			}

    			this._pingPongRenderTarget = _createRenderTarget( width, height, params );

    			const { _lodMax } = this;
    			( { sizeLods: this._sizeLods, lodPlanes: this._lodPlanes, sigmas: this._sigmas } = _createPlanes( _lodMax ) );

    			this._blurMaterial = _getBlurShader( _lodMax, width, height );

    		}

    		return cubeUVRenderTarget;

    	}

    	_compileMaterial( material ) {

    		const tmpMesh = new Mesh( this._lodPlanes[ 0 ], material );
    		this._renderer.compile( tmpMesh, _flatCamera );

    	}

    	_sceneToCubeUV( scene, near, far, cubeUVRenderTarget ) {

    		const fov = 90;
    		const aspect = 1;
    		const cubeCamera = new PerspectiveCamera( fov, aspect, near, far );
    		const upSign = [ 1, - 1, 1, 1, 1, 1 ];
    		const forwardSign = [ 1, 1, 1, - 1, - 1, - 1 ];
    		const renderer = this._renderer;

    		const originalAutoClear = renderer.autoClear;
    		const toneMapping = renderer.toneMapping;
    		renderer.getClearColor( _clearColor );

    		renderer.toneMapping = NoToneMapping;
    		renderer.autoClear = false;

    		const backgroundMaterial = new MeshBasicMaterial( {
    			name: 'PMREM.Background',
    			side: BackSide,
    			depthWrite: false,
    			depthTest: false,
    		} );

    		const backgroundBox = new Mesh( new BoxGeometry(), backgroundMaterial );

    		let useSolidColor = false;
    		const background = scene.background;

    		if ( background ) {

    			if ( background.isColor ) {

    				backgroundMaterial.color.copy( background );
    				scene.background = null;
    				useSolidColor = true;

    			}

    		} else {

    			backgroundMaterial.color.copy( _clearColor );
    			useSolidColor = true;

    		}

    		for ( let i = 0; i < 6; i ++ ) {

    			const col = i % 3;

    			if ( col === 0 ) {

    				cubeCamera.up.set( 0, upSign[ i ], 0 );
    				cubeCamera.lookAt( forwardSign[ i ], 0, 0 );

    			} else if ( col === 1 ) {

    				cubeCamera.up.set( 0, 0, upSign[ i ] );
    				cubeCamera.lookAt( 0, forwardSign[ i ], 0 );

    			} else {

    				cubeCamera.up.set( 0, upSign[ i ], 0 );
    				cubeCamera.lookAt( 0, 0, forwardSign[ i ] );

    			}

    			const size = this._cubeSize;

    			_setViewport( cubeUVRenderTarget, col * size, i > 2 ? size : 0, size, size );

    			renderer.setRenderTarget( cubeUVRenderTarget );

    			if ( useSolidColor ) {

    				renderer.render( backgroundBox, cubeCamera );

    			}

    			renderer.render( scene, cubeCamera );

    		}

    		backgroundBox.geometry.dispose();
    		backgroundBox.material.dispose();

    		renderer.toneMapping = toneMapping;
    		renderer.autoClear = originalAutoClear;
    		scene.background = background;

    	}

    	_textureToCubeUV( texture, cubeUVRenderTarget ) {

    		const renderer = this._renderer;

    		const isCubeTexture = ( texture.mapping === CubeReflectionMapping || texture.mapping === CubeRefractionMapping );

    		if ( isCubeTexture ) {

    			if ( this._cubemapMaterial === null ) {

    				this._cubemapMaterial = _getCubemapMaterial();

    			}

    			this._cubemapMaterial.uniforms.flipEnvMap.value = ( texture.isRenderTargetTexture === false ) ? - 1 : 1;

    		} else {

    			if ( this._equirectMaterial === null ) {

    				this._equirectMaterial = _getEquirectMaterial();

    			}

    		}

    		const material = isCubeTexture ? this._cubemapMaterial : this._equirectMaterial;
    		const mesh = new Mesh( this._lodPlanes[ 0 ], material );

    		const uniforms = material.uniforms;

    		uniforms[ 'envMap' ].value = texture;

    		const size = this._cubeSize;

    		_setViewport( cubeUVRenderTarget, 0, 0, 3 * size, 2 * size );

    		renderer.setRenderTarget( cubeUVRenderTarget );
    		renderer.render( mesh, _flatCamera );

    	}

    	_applyPMREM( cubeUVRenderTarget ) {

    		const renderer = this._renderer;
    		const autoClear = renderer.autoClear;
    		renderer.autoClear = false;

    		for ( let i = 1; i < this._lodPlanes.length; i ++ ) {

    			const sigma = Math.sqrt( this._sigmas[ i ] * this._sigmas[ i ] - this._sigmas[ i - 1 ] * this._sigmas[ i - 1 ] );

    			const poleAxis = _axisDirections[ ( i - 1 ) % _axisDirections.length ];

    			this._blur( cubeUVRenderTarget, i - 1, i, sigma, poleAxis );

    		}

    		renderer.autoClear = autoClear;

    	}

    	/**
    	 * This is a two-pass Gaussian blur for a cubemap. Normally this is done
    	 * vertically and horizontally, but this breaks down on a cube. Here we apply
    	 * the blur latitudinally (around the poles), and then longitudinally (towards
    	 * the poles) to approximate the orthogonally-separable blur. It is least
    	 * accurate at the poles, but still does a decent job.
    	 */
    	_blur( cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis ) {

    		const pingPongRenderTarget = this._pingPongRenderTarget;

    		this._halfBlur(
    			cubeUVRenderTarget,
    			pingPongRenderTarget,
    			lodIn,
    			lodOut,
    			sigma,
    			'latitudinal',
    			poleAxis );

    		this._halfBlur(
    			pingPongRenderTarget,
    			cubeUVRenderTarget,
    			lodOut,
    			lodOut,
    			sigma,
    			'longitudinal',
    			poleAxis );

    	}

    	_halfBlur( targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis ) {

    		const renderer = this._renderer;
    		const blurMaterial = this._blurMaterial;

    		if ( direction !== 'latitudinal' && direction !== 'longitudinal' ) {

    			console.error(
    				'blur direction must be either latitudinal or longitudinal!' );

    		}

    		// Number of standard deviations at which to cut off the discrete approximation.
    		const STANDARD_DEVIATIONS = 3;

    		const blurMesh = new Mesh( this._lodPlanes[ lodOut ], blurMaterial );
    		const blurUniforms = blurMaterial.uniforms;

    		const pixels = this._sizeLods[ lodIn ] - 1;
    		const radiansPerPixel = isFinite( sigmaRadians ) ? Math.PI / ( 2 * pixels ) : 2 * Math.PI / ( 2 * MAX_SAMPLES - 1 );
    		const sigmaPixels = sigmaRadians / radiansPerPixel;
    		const samples = isFinite( sigmaRadians ) ? 1 + Math.floor( STANDARD_DEVIATIONS * sigmaPixels ) : MAX_SAMPLES;

    		if ( samples > MAX_SAMPLES ) {

    			console.warn( `sigmaRadians, ${
				sigmaRadians}, is too large and will clip, as it requested ${
				samples} samples when the maximum is set to ${MAX_SAMPLES}` );

    		}

    		const weights = [];
    		let sum = 0;

    		for ( let i = 0; i < MAX_SAMPLES; ++ i ) {

    			const x = i / sigmaPixels;
    			const weight = Math.exp( - x * x / 2 );
    			weights.push( weight );

    			if ( i === 0 ) {

    				sum += weight;

    			} else if ( i < samples ) {

    				sum += 2 * weight;

    			}

    		}

    		for ( let i = 0; i < weights.length; i ++ ) {

    			weights[ i ] = weights[ i ] / sum;

    		}

    		blurUniforms[ 'envMap' ].value = targetIn.texture;
    		blurUniforms[ 'samples' ].value = samples;
    		blurUniforms[ 'weights' ].value = weights;
    		blurUniforms[ 'latitudinal' ].value = direction === 'latitudinal';

    		if ( poleAxis ) {

    			blurUniforms[ 'poleAxis' ].value = poleAxis;

    		}

    		const { _lodMax } = this;
    		blurUniforms[ 'dTheta' ].value = radiansPerPixel;
    		blurUniforms[ 'mipInt' ].value = _lodMax - lodIn;

    		const outputSize = this._sizeLods[ lodOut ];
    		const x = 3 * outputSize * ( lodOut > _lodMax - LOD_MIN ? lodOut - _lodMax + LOD_MIN : 0 );
    		const y = 4 * ( this._cubeSize - outputSize );

    		_setViewport( targetOut, x, y, 3 * outputSize, 2 * outputSize );
    		renderer.setRenderTarget( targetOut );
    		renderer.render( blurMesh, _flatCamera );

    	}

    }



    function _createPlanes( lodMax ) {

    	const lodPlanes = [];
    	const sizeLods = [];
    	const sigmas = [];

    	let lod = lodMax;

    	const totalLods = lodMax - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length;

    	for ( let i = 0; i < totalLods; i ++ ) {

    		const sizeLod = Math.pow( 2, lod );
    		sizeLods.push( sizeLod );
    		let sigma = 1.0 / sizeLod;

    		if ( i > lodMax - LOD_MIN ) {

    			sigma = EXTRA_LOD_SIGMA[ i - lodMax + LOD_MIN - 1 ];

    		} else if ( i === 0 ) {

    			sigma = 0;

    		}

    		sigmas.push( sigma );

    		const texelSize = 1.0 / ( sizeLod - 2 );
    		const min = - texelSize;
    		const max = 1 + texelSize;
    		const uv1 = [ min, min, max, min, max, max, min, min, max, max, min, max ];

    		const cubeFaces = 6;
    		const vertices = 6;
    		const positionSize = 3;
    		const uvSize = 2;
    		const faceIndexSize = 1;

    		const position = new Float32Array( positionSize * vertices * cubeFaces );
    		const uv = new Float32Array( uvSize * vertices * cubeFaces );
    		const faceIndex = new Float32Array( faceIndexSize * vertices * cubeFaces );

    		for ( let face = 0; face < cubeFaces; face ++ ) {

    			const x = ( face % 3 ) * 2 / 3 - 1;
    			const y = face > 2 ? 0 : - 1;
    			const coordinates = [
    				x, y, 0,
    				x + 2 / 3, y, 0,
    				x + 2 / 3, y + 1, 0,
    				x, y, 0,
    				x + 2 / 3, y + 1, 0,
    				x, y + 1, 0
    			];
    			position.set( coordinates, positionSize * vertices * face );
    			uv.set( uv1, uvSize * vertices * face );
    			const fill = [ face, face, face, face, face, face ];
    			faceIndex.set( fill, faceIndexSize * vertices * face );

    		}

    		const planes = new BufferGeometry();
    		planes.setAttribute( 'position', new BufferAttribute( position, positionSize ) );
    		planes.setAttribute( 'uv', new BufferAttribute( uv, uvSize ) );
    		planes.setAttribute( 'faceIndex', new BufferAttribute( faceIndex, faceIndexSize ) );
    		lodPlanes.push( planes );

    		if ( lod > LOD_MIN ) {

    			lod --;

    		}

    	}

    	return { lodPlanes, sizeLods, sigmas };

    }

    function _createRenderTarget( width, height, params ) {

    	const cubeUVRenderTarget = new WebGLRenderTarget( width, height, params );
    	cubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;
    	cubeUVRenderTarget.texture.name = 'PMREM.cubeUv';
    	cubeUVRenderTarget.scissorTest = true;
    	return cubeUVRenderTarget;

    }

    function _setViewport( target, x, y, width, height ) {

    	target.viewport.set( x, y, width, height );
    	target.scissor.set( x, y, width, height );

    }

    function _getBlurShader( lodMax, width, height ) {

    	const weights = new Float32Array( MAX_SAMPLES );
    	const poleAxis = new Vector3( 0, 1, 0 );
    	const shaderMaterial = new ShaderMaterial( {

    		name: 'SphericalGaussianBlur',

    		defines: {
    			'n': MAX_SAMPLES,
    			'CUBEUV_TEXEL_WIDTH': 1.0 / width,
    			'CUBEUV_TEXEL_HEIGHT': 1.0 / height,
    			'CUBEUV_MAX_MIP': `${lodMax}.0`,
    		},

    		uniforms: {
    			'envMap': { value: null },
    			'samples': { value: 1 },
    			'weights': { value: weights },
    			'latitudinal': { value: false },
    			'dTheta': { value: 0 },
    			'mipInt': { value: 0 },
    			'poleAxis': { value: poleAxis }
    		},

    		vertexShader: _getCommonVertexShader(),

    		fragmentShader: /* glsl */`

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform sampler2D envMap;
			uniform int samples;
			uniform float weights[ n ];
			uniform bool latitudinal;
			uniform float dTheta;
			uniform float mipInt;
			uniform vec3 poleAxis;

			#define ENVMAP_TYPE_CUBE_UV
			#include <cube_uv_reflection_fragment>

			vec3 getSample( float theta, vec3 axis ) {

				float cosTheta = cos( theta );
				// Rodrigues' axis-angle rotation
				vec3 sampleDirection = vOutputDirection * cosTheta
					+ cross( axis, vOutputDirection ) * sin( theta )
					+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );

				return bilinearCubeUV( envMap, sampleDirection, mipInt );

			}

			void main() {

				vec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );

				if ( all( equal( axis, vec3( 0.0 ) ) ) ) {

					axis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );

				}

				axis = normalize( axis );

				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
				gl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );

				for ( int i = 1; i < n; i++ ) {

					if ( i >= samples ) {

						break;

					}

					float theta = dTheta * float( i );
					gl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );
					gl_FragColor.rgb += weights[ i ] * getSample( theta, axis );

				}

			}
		`,

    		blending: NoBlending,
    		depthTest: false,
    		depthWrite: false

    	} );

    	return shaderMaterial;

    }

    function _getEquirectMaterial() {

    	return new ShaderMaterial( {

    		name: 'EquirectangularToCubeUV',

    		uniforms: {
    			'envMap': { value: null }
    		},

    		vertexShader: _getCommonVertexShader(),

    		fragmentShader: /* glsl */`

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform sampler2D envMap;

			#include <common>

			void main() {

				vec3 outputDirection = normalize( vOutputDirection );
				vec2 uv = equirectUv( outputDirection );

				gl_FragColor = vec4( texture2D ( envMap, uv ).rgb, 1.0 );

			}
		`,

    		blending: NoBlending,
    		depthTest: false,
    		depthWrite: false

    	} );

    }

    function _getCubemapMaterial() {

    	return new ShaderMaterial( {

    		name: 'CubemapToCubeUV',

    		uniforms: {
    			'envMap': { value: null },
    			'flipEnvMap': { value: - 1 }
    		},

    		vertexShader: _getCommonVertexShader(),

    		fragmentShader: /* glsl */`

			precision mediump float;
			precision mediump int;

			uniform float flipEnvMap;

			varying vec3 vOutputDirection;

			uniform samplerCube envMap;

			void main() {

				gl_FragColor = textureCube( envMap, vec3( flipEnvMap * vOutputDirection.x, vOutputDirection.yz ) );

			}
		`,

    		blending: NoBlending,
    		depthTest: false,
    		depthWrite: false

    	} );

    }

    function _getCommonVertexShader() {

    	return /* glsl */`

		precision mediump float;
		precision mediump int;

		attribute float faceIndex;

		varying vec3 vOutputDirection;

		// RH coordinate system; PMREM face-indexing convention
		vec3 getDirection( vec2 uv, float face ) {

			uv = 2.0 * uv - 1.0;

			vec3 direction = vec3( uv, 1.0 );

			if ( face == 0.0 ) {

				direction = direction.zyx; // ( 1, v, u ) pos x

			} else if ( face == 1.0 ) {

				direction = direction.xzy;
				direction.xz *= -1.0; // ( -u, 1, -v ) pos y

			} else if ( face == 2.0 ) {

				direction.x *= -1.0; // ( -u, v, 1 ) pos z

			} else if ( face == 3.0 ) {

				direction = direction.zyx;
				direction.xz *= -1.0; // ( -1, v, -u ) neg x

			} else if ( face == 4.0 ) {

				direction = direction.xzy;
				direction.xy *= -1.0; // ( -u, -1, v ) neg y

			} else if ( face == 5.0 ) {

				direction.z *= -1.0; // ( u, v, -1 ) neg z

			}

			return direction;

		}

		void main() {

			vOutputDirection = getDirection( uv, faceIndex );
			gl_Position = vec4( position, 1.0 );

		}
	`;

    }

    function WebGLCubeUVMaps( renderer ) {

    	let cubeUVmaps = new WeakMap();

    	let pmremGenerator = null;

    	function get( texture ) {

    		if ( texture && texture.isTexture ) {

    			const mapping = texture.mapping;

    			const isEquirectMap = ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping );
    			const isCubeMap = ( mapping === CubeReflectionMapping || mapping === CubeRefractionMapping );

    			// equirect/cube map to cubeUV conversion

    			if ( isEquirectMap || isCubeMap ) {

    				if ( texture.isRenderTargetTexture && texture.needsPMREMUpdate === true ) {

    					texture.needsPMREMUpdate = false;

    					let renderTarget = cubeUVmaps.get( texture );

    					if ( pmremGenerator === null ) pmremGenerator = new PMREMGenerator( renderer );

    					renderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular( texture, renderTarget ) : pmremGenerator.fromCubemap( texture, renderTarget );
    					cubeUVmaps.set( texture, renderTarget );

    					return renderTarget.texture;

    				} else {

    					if ( cubeUVmaps.has( texture ) ) {

    						return cubeUVmaps.get( texture ).texture;

    					} else {

    						const image = texture.image;

    						if ( ( isEquirectMap && image && image.height > 0 ) || ( isCubeMap && image && isCubeTextureComplete( image ) ) ) {

    							if ( pmremGenerator === null ) pmremGenerator = new PMREMGenerator( renderer );

    							const renderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular( texture ) : pmremGenerator.fromCubemap( texture );
    							cubeUVmaps.set( texture, renderTarget );

    							texture.addEventListener( 'dispose', onTextureDispose );

    							return renderTarget.texture;

    						} else {

    							// image not yet ready. try the conversion next frame

    							return null;

    						}

    					}

    				}

    			}

    		}

    		return texture;

    	}

    	function isCubeTextureComplete( image ) {

    		let count = 0;
    		const length = 6;

    		for ( let i = 0; i < length; i ++ ) {

    			if ( image[ i ] !== undefined ) count ++;

    		}

    		return count === length;


    	}

    	function onTextureDispose( event ) {

    		const texture = event.target;

    		texture.removeEventListener( 'dispose', onTextureDispose );

    		const cubemapUV = cubeUVmaps.get( texture );

    		if ( cubemapUV !== undefined ) {

    			cubeUVmaps.delete( texture );
    			cubemapUV.dispose();

    		}

    	}

    	function dispose() {

    		cubeUVmaps = new WeakMap();

    		if ( pmremGenerator !== null ) {

    			pmremGenerator.dispose();
    			pmremGenerator = null;

    		}

    	}

    	return {
    		get: get,
    		dispose: dispose
    	};

    }

    function WebGLExtensions( gl ) {

    	const extensions = {};

    	function getExtension( name ) {

    		if ( extensions[ name ] !== undefined ) {

    			return extensions[ name ];

    		}

    		let extension;

    		switch ( name ) {

    			case 'WEBGL_depth_texture':
    				extension = gl.getExtension( 'WEBGL_depth_texture' ) || gl.getExtension( 'MOZ_WEBGL_depth_texture' ) || gl.getExtension( 'WEBKIT_WEBGL_depth_texture' );
    				break;

    			case 'EXT_texture_filter_anisotropic':
    				extension = gl.getExtension( 'EXT_texture_filter_anisotropic' ) || gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) || gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );
    				break;

    			case 'WEBGL_compressed_texture_s3tc':
    				extension = gl.getExtension( 'WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'MOZ_WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_s3tc' );
    				break;

    			case 'WEBGL_compressed_texture_pvrtc':
    				extension = gl.getExtension( 'WEBGL_compressed_texture_pvrtc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
    				break;

    			default:
    				extension = gl.getExtension( name );

    		}

    		extensions[ name ] = extension;

    		return extension;

    	}

    	return {

    		has: function ( name ) {

    			return getExtension( name ) !== null;

    		},

    		init: function ( capabilities ) {

    			if ( capabilities.isWebGL2 ) {

    				getExtension( 'EXT_color_buffer_float' );

    			} else {

    				getExtension( 'WEBGL_depth_texture' );
    				getExtension( 'OES_texture_float' );
    				getExtension( 'OES_texture_half_float' );
    				getExtension( 'OES_texture_half_float_linear' );
    				getExtension( 'OES_standard_derivatives' );
    				getExtension( 'OES_element_index_uint' );
    				getExtension( 'OES_vertex_array_object' );
    				getExtension( 'ANGLE_instanced_arrays' );

    			}

    			getExtension( 'OES_texture_float_linear' );
    			getExtension( 'EXT_color_buffer_half_float' );
    			getExtension( 'WEBGL_multisampled_render_to_texture' );

    		},

    		get: function ( name ) {

    			const extension = getExtension( name );

    			if ( extension === null ) {

    				console.warn( 'THREE.WebGLRenderer: ' + name + ' extension not supported.' );

    			}

    			return extension;

    		}

    	};

    }

    function WebGLGeometries( gl, attributes, info, bindingStates ) {

    	const geometries = {};
    	const wireframeAttributes = new WeakMap();

    	function onGeometryDispose( event ) {

    		const geometry = event.target;

    		if ( geometry.index !== null ) {

    			attributes.remove( geometry.index );

    		}

    		for ( const name in geometry.attributes ) {

    			attributes.remove( geometry.attributes[ name ] );

    		}

    		geometry.removeEventListener( 'dispose', onGeometryDispose );

    		delete geometries[ geometry.id ];

    		const attribute = wireframeAttributes.get( geometry );

    		if ( attribute ) {

    			attributes.remove( attribute );
    			wireframeAttributes.delete( geometry );

    		}

    		bindingStates.releaseStatesOfGeometry( geometry );

    		if ( geometry.isInstancedBufferGeometry === true ) {

    			delete geometry._maxInstanceCount;

    		}

    		//

    		info.memory.geometries --;

    	}

    	function get( object, geometry ) {

    		if ( geometries[ geometry.id ] === true ) return geometry;

    		geometry.addEventListener( 'dispose', onGeometryDispose );

    		geometries[ geometry.id ] = true;

    		info.memory.geometries ++;

    		return geometry;

    	}

    	function update( geometry ) {

    		const geometryAttributes = geometry.attributes;

    		// Updating index buffer in VAO now. See WebGLBindingStates.

    		for ( const name in geometryAttributes ) {

    			attributes.update( geometryAttributes[ name ], 34962 );

    		}

    		// morph targets

    		const morphAttributes = geometry.morphAttributes;

    		for ( const name in morphAttributes ) {

    			const array = morphAttributes[ name ];

    			for ( let i = 0, l = array.length; i < l; i ++ ) {

    				attributes.update( array[ i ], 34962 );

    			}

    		}

    	}

    	function updateWireframeAttribute( geometry ) {

    		const indices = [];

    		const geometryIndex = geometry.index;
    		const geometryPosition = geometry.attributes.position;
    		let version = 0;

    		if ( geometryIndex !== null ) {

    			const array = geometryIndex.array;
    			version = geometryIndex.version;

    			for ( let i = 0, l = array.length; i < l; i += 3 ) {

    				const a = array[ i + 0 ];
    				const b = array[ i + 1 ];
    				const c = array[ i + 2 ];

    				indices.push( a, b, b, c, c, a );

    			}

    		} else {

    			const array = geometryPosition.array;
    			version = geometryPosition.version;

    			for ( let i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {

    				const a = i + 0;
    				const b = i + 1;
    				const c = i + 2;

    				indices.push( a, b, b, c, c, a );

    			}

    		}

    		const attribute = new ( arrayNeedsUint32( indices ) ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );
    		attribute.version = version;

    		// Updating index buffer in VAO now. See WebGLBindingStates

    		//

    		const previousAttribute = wireframeAttributes.get( geometry );

    		if ( previousAttribute ) attributes.remove( previousAttribute );

    		//

    		wireframeAttributes.set( geometry, attribute );

    	}

    	function getWireframeAttribute( geometry ) {

    		const currentAttribute = wireframeAttributes.get( geometry );

    		if ( currentAttribute ) {

    			const geometryIndex = geometry.index;

    			if ( geometryIndex !== null ) {

    				// if the attribute is obsolete, create a new one

    				if ( currentAttribute.version < geometryIndex.version ) {

    					updateWireframeAttribute( geometry );

    				}

    			}

    		} else {

    			updateWireframeAttribute( geometry );

    		}

    		return wireframeAttributes.get( geometry );

    	}

    	return {

    		get: get,
    		update: update,

    		getWireframeAttribute: getWireframeAttribute

    	};

    }

    function WebGLIndexedBufferRenderer( gl, extensions, info, capabilities ) {

    	const isWebGL2 = capabilities.isWebGL2;

    	let mode;

    	function setMode( value ) {

    		mode = value;

    	}

    	let type, bytesPerElement;

    	function setIndex( value ) {

    		type = value.type;
    		bytesPerElement = value.bytesPerElement;

    	}

    	function render( start, count ) {

    		gl.drawElements( mode, count, type, start * bytesPerElement );

    		info.update( count, mode, 1 );

    	}

    	function renderInstances( start, count, primcount ) {

    		if ( primcount === 0 ) return;

    		let extension, methodName;

    		if ( isWebGL2 ) {

    			extension = gl;
    			methodName = 'drawElementsInstanced';

    		} else {

    			extension = extensions.get( 'ANGLE_instanced_arrays' );
    			methodName = 'drawElementsInstancedANGLE';

    			if ( extension === null ) {

    				console.error( 'THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
    				return;

    			}

    		}

    		extension[ methodName ]( mode, count, type, start * bytesPerElement, primcount );

    		info.update( count, mode, primcount );

    	}

    	//

    	this.setMode = setMode;
    	this.setIndex = setIndex;
    	this.render = render;
    	this.renderInstances = renderInstances;

    }

    function WebGLInfo( gl ) {

    	const memory = {
    		geometries: 0,
    		textures: 0
    	};

    	const render = {
    		frame: 0,
    		calls: 0,
    		triangles: 0,
    		points: 0,
    		lines: 0
    	};

    	function update( count, mode, instanceCount ) {

    		render.calls ++;

    		switch ( mode ) {

    			case 4:
    				render.triangles += instanceCount * ( count / 3 );
    				break;

    			case 1:
    				render.lines += instanceCount * ( count / 2 );
    				break;

    			case 3:
    				render.lines += instanceCount * ( count - 1 );
    				break;

    			case 2:
    				render.lines += instanceCount * count;
    				break;

    			case 0:
    				render.points += instanceCount * count;
    				break;

    			default:
    				console.error( 'THREE.WebGLInfo: Unknown draw mode:', mode );
    				break;

    		}

    	}

    	function reset() {

    		render.frame ++;
    		render.calls = 0;
    		render.triangles = 0;
    		render.points = 0;
    		render.lines = 0;

    	}

    	return {
    		memory: memory,
    		render: render,
    		programs: null,
    		autoReset: true,
    		reset: reset,
    		update: update
    	};

    }

    function numericalSort( a, b ) {

    	return a[ 0 ] - b[ 0 ];

    }

    function absNumericalSort( a, b ) {

    	return Math.abs( b[ 1 ] ) - Math.abs( a[ 1 ] );

    }

    function WebGLMorphtargets( gl, capabilities, textures ) {

    	const influencesList = {};
    	const morphInfluences = new Float32Array( 8 );
    	const morphTextures = new WeakMap();
    	const morph = new Vector4();

    	const workInfluences = [];

    	for ( let i = 0; i < 8; i ++ ) {

    		workInfluences[ i ] = [ i, 0 ];

    	}

    	function update( object, geometry, material, program ) {

    		const objectInfluences = object.morphTargetInfluences;

    		if ( capabilities.isWebGL2 === true ) {

    			// instead of using attributes, the WebGL 2 code path encodes morph targets
    			// into an array of data textures. Each layer represents a single morph target.

    			const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
    			const morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;

    			let entry = morphTextures.get( geometry );

    			if ( entry === undefined || entry.count !== morphTargetsCount ) {

    				if ( entry !== undefined ) entry.texture.dispose();

    				const hasMorphPosition = geometry.morphAttributes.position !== undefined;
    				const hasMorphNormals = geometry.morphAttributes.normal !== undefined;
    				const hasMorphColors = geometry.morphAttributes.color !== undefined;

    				const morphTargets = geometry.morphAttributes.position || [];
    				const morphNormals = geometry.morphAttributes.normal || [];
    				const morphColors = geometry.morphAttributes.color || [];

    				let vertexDataCount = 0;

    				if ( hasMorphPosition === true ) vertexDataCount = 1;
    				if ( hasMorphNormals === true ) vertexDataCount = 2;
    				if ( hasMorphColors === true ) vertexDataCount = 3;

    				let width = geometry.attributes.position.count * vertexDataCount;
    				let height = 1;

    				if ( width > capabilities.maxTextureSize ) {

    					height = Math.ceil( width / capabilities.maxTextureSize );
    					width = capabilities.maxTextureSize;

    				}

    				const buffer = new Float32Array( width * height * 4 * morphTargetsCount );

    				const texture = new DataArrayTexture( buffer, width, height, morphTargetsCount );
    				texture.type = FloatType;
    				texture.needsUpdate = true;

    				// fill buffer

    				const vertexDataStride = vertexDataCount * 4;

    				for ( let i = 0; i < morphTargetsCount; i ++ ) {

    					const morphTarget = morphTargets[ i ];
    					const morphNormal = morphNormals[ i ];
    					const morphColor = morphColors[ i ];

    					const offset = width * height * 4 * i;

    					for ( let j = 0; j < morphTarget.count; j ++ ) {

    						const stride = j * vertexDataStride;

    						if ( hasMorphPosition === true ) {

    							morph.fromBufferAttribute( morphTarget, j );

    							buffer[ offset + stride + 0 ] = morph.x;
    							buffer[ offset + stride + 1 ] = morph.y;
    							buffer[ offset + stride + 2 ] = morph.z;
    							buffer[ offset + stride + 3 ] = 0;

    						}

    						if ( hasMorphNormals === true ) {

    							morph.fromBufferAttribute( morphNormal, j );

    							buffer[ offset + stride + 4 ] = morph.x;
    							buffer[ offset + stride + 5 ] = morph.y;
    							buffer[ offset + stride + 6 ] = morph.z;
    							buffer[ offset + stride + 7 ] = 0;

    						}

    						if ( hasMorphColors === true ) {

    							morph.fromBufferAttribute( morphColor, j );

    							buffer[ offset + stride + 8 ] = morph.x;
    							buffer[ offset + stride + 9 ] = morph.y;
    							buffer[ offset + stride + 10 ] = morph.z;
    							buffer[ offset + stride + 11 ] = ( morphColor.itemSize === 4 ) ? morph.w : 1;

    						}

    					}

    				}

    				entry = {
    					count: morphTargetsCount,
    					texture: texture,
    					size: new Vector2( width, height )
    				};

    				morphTextures.set( geometry, entry );

    				function disposeTexture() {

    					texture.dispose();

    					morphTextures.delete( geometry );

    					geometry.removeEventListener( 'dispose', disposeTexture );

    				}

    				geometry.addEventListener( 'dispose', disposeTexture );

    			}

    			//

    			let morphInfluencesSum = 0;

    			for ( let i = 0; i < objectInfluences.length; i ++ ) {

    				morphInfluencesSum += objectInfluences[ i ];

    			}

    			const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;

    			program.getUniforms().setValue( gl, 'morphTargetBaseInfluence', morphBaseInfluence );
    			program.getUniforms().setValue( gl, 'morphTargetInfluences', objectInfluences );

    			program.getUniforms().setValue( gl, 'morphTargetsTexture', entry.texture, textures );
    			program.getUniforms().setValue( gl, 'morphTargetsTextureSize', entry.size );


    		} else {

    			// When object doesn't have morph target influences defined, we treat it as a 0-length array
    			// This is important to make sure we set up morphTargetBaseInfluence / morphTargetInfluences

    			const length = objectInfluences === undefined ? 0 : objectInfluences.length;

    			let influences = influencesList[ geometry.id ];

    			if ( influences === undefined || influences.length !== length ) {

    				// initialise list

    				influences = [];

    				for ( let i = 0; i < length; i ++ ) {

    					influences[ i ] = [ i, 0 ];

    				}

    				influencesList[ geometry.id ] = influences;

    			}

    			// Collect influences

    			for ( let i = 0; i < length; i ++ ) {

    				const influence = influences[ i ];

    				influence[ 0 ] = i;
    				influence[ 1 ] = objectInfluences[ i ];

    			}

    			influences.sort( absNumericalSort );

    			for ( let i = 0; i < 8; i ++ ) {

    				if ( i < length && influences[ i ][ 1 ] ) {

    					workInfluences[ i ][ 0 ] = influences[ i ][ 0 ];
    					workInfluences[ i ][ 1 ] = influences[ i ][ 1 ];

    				} else {

    					workInfluences[ i ][ 0 ] = Number.MAX_SAFE_INTEGER;
    					workInfluences[ i ][ 1 ] = 0;

    				}

    			}

    			workInfluences.sort( numericalSort );

    			const morphTargets = geometry.morphAttributes.position;
    			const morphNormals = geometry.morphAttributes.normal;

    			let morphInfluencesSum = 0;

    			for ( let i = 0; i < 8; i ++ ) {

    				const influence = workInfluences[ i ];
    				const index = influence[ 0 ];
    				const value = influence[ 1 ];

    				if ( index !== Number.MAX_SAFE_INTEGER && value ) {

    					if ( morphTargets && geometry.getAttribute( 'morphTarget' + i ) !== morphTargets[ index ] ) {

    						geometry.setAttribute( 'morphTarget' + i, morphTargets[ index ] );

    					}

    					if ( morphNormals && geometry.getAttribute( 'morphNormal' + i ) !== morphNormals[ index ] ) {

    						geometry.setAttribute( 'morphNormal' + i, morphNormals[ index ] );

    					}

    					morphInfluences[ i ] = value;
    					morphInfluencesSum += value;

    				} else {

    					if ( morphTargets && geometry.hasAttribute( 'morphTarget' + i ) === true ) {

    						geometry.deleteAttribute( 'morphTarget' + i );

    					}

    					if ( morphNormals && geometry.hasAttribute( 'morphNormal' + i ) === true ) {

    						geometry.deleteAttribute( 'morphNormal' + i );

    					}

    					morphInfluences[ i ] = 0;

    				}

    			}

    			// GLSL shader uses formula baseinfluence * base + sum(target * influence)
    			// This allows us to switch between absolute morphs and relative morphs without changing shader code
    			// When baseinfluence = 1 - sum(influence), the above is equivalent to sum((target - base) * influence)
    			const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;

    			program.getUniforms().setValue( gl, 'morphTargetBaseInfluence', morphBaseInfluence );
    			program.getUniforms().setValue( gl, 'morphTargetInfluences', morphInfluences );

    		}

    	}

    	return {

    		update: update

    	};

    }

    function WebGLObjects( gl, geometries, attributes, info ) {

    	let updateMap = new WeakMap();

    	function update( object ) {

    		const frame = info.render.frame;

    		const geometry = object.geometry;
    		const buffergeometry = geometries.get( object, geometry );

    		// Update once per frame

    		if ( updateMap.get( buffergeometry ) !== frame ) {

    			geometries.update( buffergeometry );

    			updateMap.set( buffergeometry, frame );

    		}

    		if ( object.isInstancedMesh ) {

    			if ( object.hasEventListener( 'dispose', onInstancedMeshDispose ) === false ) {

    				object.addEventListener( 'dispose', onInstancedMeshDispose );

    			}

    			attributes.update( object.instanceMatrix, 34962 );

    			if ( object.instanceColor !== null ) {

    				attributes.update( object.instanceColor, 34962 );

    			}

    		}

    		return buffergeometry;

    	}

    	function dispose() {

    		updateMap = new WeakMap();

    	}

    	function onInstancedMeshDispose( event ) {

    		const instancedMesh = event.target;

    		instancedMesh.removeEventListener( 'dispose', onInstancedMeshDispose );

    		attributes.remove( instancedMesh.instanceMatrix );

    		if ( instancedMesh.instanceColor !== null ) attributes.remove( instancedMesh.instanceColor );

    	}

    	return {

    		update: update,
    		dispose: dispose

    	};

    }

    /**
     * Uniforms of a program.
     * Those form a tree structure with a special top-level container for the root,
     * which you get by calling 'new WebGLUniforms( gl, program )'.
     *
     *
     * Properties of inner nodes including the top-level container:
     *
     * .seq - array of nested uniforms
     * .map - nested uniforms by name
     *
     *
     * Methods of all nodes except the top-level container:
     *
     * .setValue( gl, value, [textures] )
     *
     * 		uploads a uniform value(s)
     *  	the 'textures' parameter is needed for sampler uniforms
     *
     *
     * Static methods of the top-level container (textures factorizations):
     *
     * .upload( gl, seq, values, textures )
     *
     * 		sets uniforms in 'seq' to 'values[id].value'
     *
     * .seqWithValue( seq, values ) : filteredSeq
     *
     * 		filters 'seq' entries with corresponding entry in values
     *
     *
     * Methods of the top-level container (textures factorizations):
     *
     * .setValue( gl, name, value, textures )
     *
     * 		sets uniform with  name 'name' to 'value'
     *
     * .setOptional( gl, obj, prop )
     *
     * 		like .set for an optional property of the object
     *
     */

    const emptyTexture = /*@__PURE__*/ new Texture();
    const emptyArrayTexture = /*@__PURE__*/ new DataArrayTexture();
    const empty3dTexture = /*@__PURE__*/ new Data3DTexture();
    const emptyCubeTexture = /*@__PURE__*/ new CubeTexture();

    // --- Utilities ---

    // Array Caches (provide typed arrays for temporary by size)

    const arrayCacheF32 = [];
    const arrayCacheI32 = [];

    // Float32Array caches used for uploading Matrix uniforms

    const mat4array = new Float32Array( 16 );
    const mat3array = new Float32Array( 9 );
    const mat2array = new Float32Array( 4 );

    // Flattening for arrays of vectors and matrices

    function flatten( array, nBlocks, blockSize ) {

    	const firstElem = array[ 0 ];

    	if ( firstElem <= 0 || firstElem > 0 ) return array;
    	// unoptimized: ! isNaN( firstElem )
    	// see http://jacksondunstan.com/articles/983

    	const n = nBlocks * blockSize;
    	let r = arrayCacheF32[ n ];

    	if ( r === undefined ) {

    		r = new Float32Array( n );
    		arrayCacheF32[ n ] = r;

    	}

    	if ( nBlocks !== 0 ) {

    		firstElem.toArray( r, 0 );

    		for ( let i = 1, offset = 0; i !== nBlocks; ++ i ) {

    			offset += blockSize;
    			array[ i ].toArray( r, offset );

    		}

    	}

    	return r;

    }

    function arraysEqual( a, b ) {

    	if ( a.length !== b.length ) return false;

    	for ( let i = 0, l = a.length; i < l; i ++ ) {

    		if ( a[ i ] !== b[ i ] ) return false;

    	}

    	return true;

    }

    function copyArray( a, b ) {

    	for ( let i = 0, l = b.length; i < l; i ++ ) {

    		a[ i ] = b[ i ];

    	}

    }

    // Texture unit allocation

    function allocTexUnits( textures, n ) {

    	let r = arrayCacheI32[ n ];

    	if ( r === undefined ) {

    		r = new Int32Array( n );
    		arrayCacheI32[ n ] = r;

    	}

    	for ( let i = 0; i !== n; ++ i ) {

    		r[ i ] = textures.allocateTextureUnit();

    	}

    	return r;

    }

    // --- Setters ---

    // Note: Defining these methods externally, because they come in a bunch
    // and this way their names minify.

    // Single scalar

    function setValueV1f( gl, v ) {

    	const cache = this.cache;

    	if ( cache[ 0 ] === v ) return;

    	gl.uniform1f( this.addr, v );

    	cache[ 0 ] = v;

    }

    // Single float vector (from flat array or THREE.VectorN)

    function setValueV2f( gl, v ) {

    	const cache = this.cache;

    	if ( v.x !== undefined ) {

    		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {

    			gl.uniform2f( this.addr, v.x, v.y );

    			cache[ 0 ] = v.x;
    			cache[ 1 ] = v.y;

    		}

    	} else {

    		if ( arraysEqual( cache, v ) ) return;

    		gl.uniform2fv( this.addr, v );

    		copyArray( cache, v );

    	}

    }

    function setValueV3f( gl, v ) {

    	const cache = this.cache;

    	if ( v.x !== undefined ) {

    		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {

    			gl.uniform3f( this.addr, v.x, v.y, v.z );

    			cache[ 0 ] = v.x;
    			cache[ 1 ] = v.y;
    			cache[ 2 ] = v.z;

    		}

    	} else if ( v.r !== undefined ) {

    		if ( cache[ 0 ] !== v.r || cache[ 1 ] !== v.g || cache[ 2 ] !== v.b ) {

    			gl.uniform3f( this.addr, v.r, v.g, v.b );

    			cache[ 0 ] = v.r;
    			cache[ 1 ] = v.g;
    			cache[ 2 ] = v.b;

    		}

    	} else {

    		if ( arraysEqual( cache, v ) ) return;

    		gl.uniform3fv( this.addr, v );

    		copyArray( cache, v );

    	}

    }

    function setValueV4f( gl, v ) {

    	const cache = this.cache;

    	if ( v.x !== undefined ) {

    		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {

    			gl.uniform4f( this.addr, v.x, v.y, v.z, v.w );

    			cache[ 0 ] = v.x;
    			cache[ 1 ] = v.y;
    			cache[ 2 ] = v.z;
    			cache[ 3 ] = v.w;

    		}

    	} else {

    		if ( arraysEqual( cache, v ) ) return;

    		gl.uniform4fv( this.addr, v );

    		copyArray( cache, v );

    	}

    }

    // Single matrix (from flat array or THREE.MatrixN)

    function setValueM2( gl, v ) {

    	const cache = this.cache;
    	const elements = v.elements;

    	if ( elements === undefined ) {

    		if ( arraysEqual( cache, v ) ) return;

    		gl.uniformMatrix2fv( this.addr, false, v );

    		copyArray( cache, v );

    	} else {

    		if ( arraysEqual( cache, elements ) ) return;

    		mat2array.set( elements );

    		gl.uniformMatrix2fv( this.addr, false, mat2array );

    		copyArray( cache, elements );

    	}

    }

    function setValueM3( gl, v ) {

    	const cache = this.cache;
    	const elements = v.elements;

    	if ( elements === undefined ) {

    		if ( arraysEqual( cache, v ) ) return;

    		gl.uniformMatrix3fv( this.addr, false, v );

    		copyArray( cache, v );

    	} else {

    		if ( arraysEqual( cache, elements ) ) return;

    		mat3array.set( elements );

    		gl.uniformMatrix3fv( this.addr, false, mat3array );

    		copyArray( cache, elements );

    	}

    }

    function setValueM4( gl, v ) {

    	const cache = this.cache;
    	const elements = v.elements;

    	if ( elements === undefined ) {

    		if ( arraysEqual( cache, v ) ) return;

    		gl.uniformMatrix4fv( this.addr, false, v );

    		copyArray( cache, v );

    	} else {

    		if ( arraysEqual( cache, elements ) ) return;

    		mat4array.set( elements );

    		gl.uniformMatrix4fv( this.addr, false, mat4array );

    		copyArray( cache, elements );

    	}

    }

    // Single integer / boolean

    function setValueV1i( gl, v ) {

    	const cache = this.cache;

    	if ( cache[ 0 ] === v ) return;

    	gl.uniform1i( this.addr, v );

    	cache[ 0 ] = v;

    }

    // Single integer / boolean vector (from flat array)

    function setValueV2i( gl, v ) {

    	const cache = this.cache;

    	if ( arraysEqual( cache, v ) ) return;

    	gl.uniform2iv( this.addr, v );

    	copyArray( cache, v );

    }

    function setValueV3i( gl, v ) {

    	const cache = this.cache;

    	if ( arraysEqual( cache, v ) ) return;

    	gl.uniform3iv( this.addr, v );

    	copyArray( cache, v );

    }

    function setValueV4i( gl, v ) {

    	const cache = this.cache;

    	if ( arraysEqual( cache, v ) ) return;

    	gl.uniform4iv( this.addr, v );

    	copyArray( cache, v );

    }

    // Single unsigned integer

    function setValueV1ui( gl, v ) {

    	const cache = this.cache;

    	if ( cache[ 0 ] === v ) return;

    	gl.uniform1ui( this.addr, v );

    	cache[ 0 ] = v;

    }

    // Single unsigned integer vector (from flat array)

    function setValueV2ui( gl, v ) {

    	const cache = this.cache;

    	if ( arraysEqual( cache, v ) ) return;

    	gl.uniform2uiv( this.addr, v );

    	copyArray( cache, v );

    }

    function setValueV3ui( gl, v ) {

    	const cache = this.cache;

    	if ( arraysEqual( cache, v ) ) return;

    	gl.uniform3uiv( this.addr, v );

    	copyArray( cache, v );

    }

    function setValueV4ui( gl, v ) {

    	const cache = this.cache;

    	if ( arraysEqual( cache, v ) ) return;

    	gl.uniform4uiv( this.addr, v );

    	copyArray( cache, v );

    }


    // Single texture (2D / Cube)

    function setValueT1( gl, v, textures ) {

    	const cache = this.cache;
    	const unit = textures.allocateTextureUnit();

    	if ( cache[ 0 ] !== unit ) {

    		gl.uniform1i( this.addr, unit );
    		cache[ 0 ] = unit;

    	}

    	textures.setTexture2D( v || emptyTexture, unit );

    }

    function setValueT3D1( gl, v, textures ) {

    	const cache = this.cache;
    	const unit = textures.allocateTextureUnit();

    	if ( cache[ 0 ] !== unit ) {

    		gl.uniform1i( this.addr, unit );
    		cache[ 0 ] = unit;

    	}

    	textures.setTexture3D( v || empty3dTexture, unit );

    }

    function setValueT6( gl, v, textures ) {

    	const cache = this.cache;
    	const unit = textures.allocateTextureUnit();

    	if ( cache[ 0 ] !== unit ) {

    		gl.uniform1i( this.addr, unit );
    		cache[ 0 ] = unit;

    	}

    	textures.setTextureCube( v || emptyCubeTexture, unit );

    }

    function setValueT2DArray1( gl, v, textures ) {

    	const cache = this.cache;
    	const unit = textures.allocateTextureUnit();

    	if ( cache[ 0 ] !== unit ) {

    		gl.uniform1i( this.addr, unit );
    		cache[ 0 ] = unit;

    	}

    	textures.setTexture2DArray( v || emptyArrayTexture, unit );

    }

    // Helper to pick the right setter for the singular case

    function getSingularSetter( type ) {

    	switch ( type ) {

    		case 0x1406: return setValueV1f; // FLOAT
    		case 0x8b50: return setValueV2f; // _VEC2
    		case 0x8b51: return setValueV3f; // _VEC3
    		case 0x8b52: return setValueV4f; // _VEC4

    		case 0x8b5a: return setValueM2; // _MAT2
    		case 0x8b5b: return setValueM3; // _MAT3
    		case 0x8b5c: return setValueM4; // _MAT4

    		case 0x1404: case 0x8b56: return setValueV1i; // INT, BOOL
    		case 0x8b53: case 0x8b57: return setValueV2i; // _VEC2
    		case 0x8b54: case 0x8b58: return setValueV3i; // _VEC3
    		case 0x8b55: case 0x8b59: return setValueV4i; // _VEC4

    		case 0x1405: return setValueV1ui; // UINT
    		case 0x8dc6: return setValueV2ui; // _VEC2
    		case 0x8dc7: return setValueV3ui; // _VEC3
    		case 0x8dc8: return setValueV4ui; // _VEC4

    		case 0x8b5e: // SAMPLER_2D
    		case 0x8d66: // SAMPLER_EXTERNAL_OES
    		case 0x8dca: // INT_SAMPLER_2D
    		case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D
    		case 0x8b62: // SAMPLER_2D_SHADOW
    			return setValueT1;

    		case 0x8b5f: // SAMPLER_3D
    		case 0x8dcb: // INT_SAMPLER_3D
    		case 0x8dd3: // UNSIGNED_INT_SAMPLER_3D
    			return setValueT3D1;

    		case 0x8b60: // SAMPLER_CUBE
    		case 0x8dcc: // INT_SAMPLER_CUBE
    		case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE
    		case 0x8dc5: // SAMPLER_CUBE_SHADOW
    			return setValueT6;

    		case 0x8dc1: // SAMPLER_2D_ARRAY
    		case 0x8dcf: // INT_SAMPLER_2D_ARRAY
    		case 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY
    		case 0x8dc4: // SAMPLER_2D_ARRAY_SHADOW
    			return setValueT2DArray1;

    	}

    }


    // Array of scalars

    function setValueV1fArray( gl, v ) {

    	gl.uniform1fv( this.addr, v );

    }

    // Array of vectors (from flat array or array of THREE.VectorN)

    function setValueV2fArray( gl, v ) {

    	const data = flatten( v, this.size, 2 );

    	gl.uniform2fv( this.addr, data );

    }

    function setValueV3fArray( gl, v ) {

    	const data = flatten( v, this.size, 3 );

    	gl.uniform3fv( this.addr, data );

    }

    function setValueV4fArray( gl, v ) {

    	const data = flatten( v, this.size, 4 );

    	gl.uniform4fv( this.addr, data );

    }

    // Array of matrices (from flat array or array of THREE.MatrixN)

    function setValueM2Array( gl, v ) {

    	const data = flatten( v, this.size, 4 );

    	gl.uniformMatrix2fv( this.addr, false, data );

    }

    function setValueM3Array( gl, v ) {

    	const data = flatten( v, this.size, 9 );

    	gl.uniformMatrix3fv( this.addr, false, data );

    }

    function setValueM4Array( gl, v ) {

    	const data = flatten( v, this.size, 16 );

    	gl.uniformMatrix4fv( this.addr, false, data );

    }

    // Array of integer / boolean

    function setValueV1iArray( gl, v ) {

    	gl.uniform1iv( this.addr, v );

    }

    // Array of integer / boolean vectors (from flat array)

    function setValueV2iArray( gl, v ) {

    	gl.uniform2iv( this.addr, v );

    }

    function setValueV3iArray( gl, v ) {

    	gl.uniform3iv( this.addr, v );

    }

    function setValueV4iArray( gl, v ) {

    	gl.uniform4iv( this.addr, v );

    }

    // Array of unsigned integer

    function setValueV1uiArray( gl, v ) {

    	gl.uniform1uiv( this.addr, v );

    }

    // Array of unsigned integer vectors (from flat array)

    function setValueV2uiArray( gl, v ) {

    	gl.uniform2uiv( this.addr, v );

    }

    function setValueV3uiArray( gl, v ) {

    	gl.uniform3uiv( this.addr, v );

    }

    function setValueV4uiArray( gl, v ) {

    	gl.uniform4uiv( this.addr, v );

    }


    // Array of textures (2D / 3D / Cube / 2DArray)

    function setValueT1Array( gl, v, textures ) {

    	const cache = this.cache;

    	const n = v.length;

    	const units = allocTexUnits( textures, n );

    	if ( ! arraysEqual( cache, units ) ) {

    		gl.uniform1iv( this.addr, units );

    		copyArray( cache, units );

    	}

    	for ( let i = 0; i !== n; ++ i ) {

    		textures.setTexture2D( v[ i ] || emptyTexture, units[ i ] );

    	}

    }

    function setValueT3DArray( gl, v, textures ) {

    	const cache = this.cache;

    	const n = v.length;

    	const units = allocTexUnits( textures, n );

    	if ( ! arraysEqual( cache, units ) ) {

    		gl.uniform1iv( this.addr, units );

    		copyArray( cache, units );

    	}

    	for ( let i = 0; i !== n; ++ i ) {

    		textures.setTexture3D( v[ i ] || empty3dTexture, units[ i ] );

    	}

    }

    function setValueT6Array( gl, v, textures ) {

    	const cache = this.cache;

    	const n = v.length;

    	const units = allocTexUnits( textures, n );

    	if ( ! arraysEqual( cache, units ) ) {

    		gl.uniform1iv( this.addr, units );

    		copyArray( cache, units );

    	}

    	for ( let i = 0; i !== n; ++ i ) {

    		textures.setTextureCube( v[ i ] || emptyCubeTexture, units[ i ] );

    	}

    }

    function setValueT2DArrayArray( gl, v, textures ) {

    	const cache = this.cache;

    	const n = v.length;

    	const units = allocTexUnits( textures, n );

    	if ( ! arraysEqual( cache, units ) ) {

    		gl.uniform1iv( this.addr, units );

    		copyArray( cache, units );

    	}

    	for ( let i = 0; i !== n; ++ i ) {

    		textures.setTexture2DArray( v[ i ] || emptyArrayTexture, units[ i ] );

    	}

    }


    // Helper to pick the right setter for a pure (bottom-level) array

    function getPureArraySetter( type ) {

    	switch ( type ) {

    		case 0x1406: return setValueV1fArray; // FLOAT
    		case 0x8b50: return setValueV2fArray; // _VEC2
    		case 0x8b51: return setValueV3fArray; // _VEC3
    		case 0x8b52: return setValueV4fArray; // _VEC4

    		case 0x8b5a: return setValueM2Array; // _MAT2
    		case 0x8b5b: return setValueM3Array; // _MAT3
    		case 0x8b5c: return setValueM4Array; // _MAT4

    		case 0x1404: case 0x8b56: return setValueV1iArray; // INT, BOOL
    		case 0x8b53: case 0x8b57: return setValueV2iArray; // _VEC2
    		case 0x8b54: case 0x8b58: return setValueV3iArray; // _VEC3
    		case 0x8b55: case 0x8b59: return setValueV4iArray; // _VEC4

    		case 0x1405: return setValueV1uiArray; // UINT
    		case 0x8dc6: return setValueV2uiArray; // _VEC2
    		case 0x8dc7: return setValueV3uiArray; // _VEC3
    		case 0x8dc8: return setValueV4uiArray; // _VEC4

    		case 0x8b5e: // SAMPLER_2D
    		case 0x8d66: // SAMPLER_EXTERNAL_OES
    		case 0x8dca: // INT_SAMPLER_2D
    		case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D
    		case 0x8b62: // SAMPLER_2D_SHADOW
    			return setValueT1Array;

    		case 0x8b5f: // SAMPLER_3D
    		case 0x8dcb: // INT_SAMPLER_3D
    		case 0x8dd3: // UNSIGNED_INT_SAMPLER_3D
    			return setValueT3DArray;

    		case 0x8b60: // SAMPLER_CUBE
    		case 0x8dcc: // INT_SAMPLER_CUBE
    		case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE
    		case 0x8dc5: // SAMPLER_CUBE_SHADOW
    			return setValueT6Array;

    		case 0x8dc1: // SAMPLER_2D_ARRAY
    		case 0x8dcf: // INT_SAMPLER_2D_ARRAY
    		case 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY
    		case 0x8dc4: // SAMPLER_2D_ARRAY_SHADOW
    			return setValueT2DArrayArray;

    	}

    }

    // --- Uniform Classes ---

    class SingleUniform {

    	constructor( id, activeInfo, addr ) {

    		this.id = id;
    		this.addr = addr;
    		this.cache = [];
    		this.setValue = getSingularSetter( activeInfo.type );

    		// this.path = activeInfo.name; // DEBUG

    	}

    }

    class PureArrayUniform {

    	constructor( id, activeInfo, addr ) {

    		this.id = id;
    		this.addr = addr;
    		this.cache = [];
    		this.size = activeInfo.size;
    		this.setValue = getPureArraySetter( activeInfo.type );

    		// this.path = activeInfo.name; // DEBUG

    	}

    }

    class StructuredUniform {

    	constructor( id ) {

    		this.id = id;

    		this.seq = [];
    		this.map = {};

    	}

    	setValue( gl, value, textures ) {

    		const seq = this.seq;

    		for ( let i = 0, n = seq.length; i !== n; ++ i ) {

    			const u = seq[ i ];
    			u.setValue( gl, value[ u.id ], textures );

    		}

    	}

    }

    // --- Top-level ---

    // Parser - builds up the property tree from the path strings

    const RePathPart = /(\w+)(\])?(\[|\.)?/g;

    // extracts
    // 	- the identifier (member name or array index)
    //  - followed by an optional right bracket (found when array index)
    //  - followed by an optional left bracket or dot (type of subscript)
    //
    // Note: These portions can be read in a non-overlapping fashion and
    // allow straightforward parsing of the hierarchy that WebGL encodes
    // in the uniform names.

    function addUniform( container, uniformObject ) {

    	container.seq.push( uniformObject );
    	container.map[ uniformObject.id ] = uniformObject;

    }

    function parseUniform( activeInfo, addr, container ) {

    	const path = activeInfo.name,
    		pathLength = path.length;

    	// reset RegExp object, because of the early exit of a previous run
    	RePathPart.lastIndex = 0;

    	while ( true ) {

    		const match = RePathPart.exec( path ),
    			matchEnd = RePathPart.lastIndex;

    		let id = match[ 1 ];
    		const idIsIndex = match[ 2 ] === ']',
    			subscript = match[ 3 ];

    		if ( idIsIndex ) id = id | 0; // convert to integer

    		if ( subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength ) {

    			// bare name or "pure" bottom-level array "[0]" suffix

    			addUniform( container, subscript === undefined ?
    				new SingleUniform( id, activeInfo, addr ) :
    				new PureArrayUniform( id, activeInfo, addr ) );

    			break;

    		} else {

    			// step into inner node / create it in case it doesn't exist

    			const map = container.map;
    			let next = map[ id ];

    			if ( next === undefined ) {

    				next = new StructuredUniform( id );
    				addUniform( container, next );

    			}

    			container = next;

    		}

    	}

    }

    // Root Container

    class WebGLUniforms {

    	constructor( gl, program ) {

    		this.seq = [];
    		this.map = {};

    		const n = gl.getProgramParameter( program, 35718 );

    		for ( let i = 0; i < n; ++ i ) {

    			const info = gl.getActiveUniform( program, i ),
    				addr = gl.getUniformLocation( program, info.name );

    			parseUniform( info, addr, this );

    		}

    	}

    	setValue( gl, name, value, textures ) {

    		const u = this.map[ name ];

    		if ( u !== undefined ) u.setValue( gl, value, textures );

    	}

    	setOptional( gl, object, name ) {

    		const v = object[ name ];

    		if ( v !== undefined ) this.setValue( gl, name, v );

    	}

    	static upload( gl, seq, values, textures ) {

    		for ( let i = 0, n = seq.length; i !== n; ++ i ) {

    			const u = seq[ i ],
    				v = values[ u.id ];

    			if ( v.needsUpdate !== false ) {

    				// note: always updating when .needsUpdate is undefined
    				u.setValue( gl, v.value, textures );

    			}

    		}

    	}

    	static seqWithValue( seq, values ) {

    		const r = [];

    		for ( let i = 0, n = seq.length; i !== n; ++ i ) {

    			const u = seq[ i ];
    			if ( u.id in values ) r.push( u );

    		}

    		return r;

    	}

    }

    function WebGLShader( gl, type, string ) {

    	const shader = gl.createShader( type );

    	gl.shaderSource( shader, string );
    	gl.compileShader( shader );

    	return shader;

    }

    let programIdCount = 0;

    function handleSource( string, errorLine ) {

    	const lines = string.split( '\n' );
    	const lines2 = [];

    	const from = Math.max( errorLine - 6, 0 );
    	const to = Math.min( errorLine + 6, lines.length );

    	for ( let i = from; i < to; i ++ ) {

    		const line = i + 1;
    		lines2.push( `${line === errorLine ? '>' : ' '} ${line}: ${lines[ i ]}` );

    	}

    	return lines2.join( '\n' );

    }

    function getEncodingComponents( encoding ) {

    	switch ( encoding ) {

    		case LinearEncoding:
    			return [ 'Linear', '( value )' ];
    		case sRGBEncoding:
    			return [ 'sRGB', '( value )' ];
    		default:
    			console.warn( 'THREE.WebGLProgram: Unsupported encoding:', encoding );
    			return [ 'Linear', '( value )' ];

    	}

    }

    function getShaderErrors( gl, shader, type ) {

    	const status = gl.getShaderParameter( shader, 35713 );
    	const errors = gl.getShaderInfoLog( shader ).trim();

    	if ( status && errors === '' ) return '';

    	const errorMatches = /ERROR: 0:(\d+)/.exec( errors );
    	if ( errorMatches ) {

    		// --enable-privileged-webgl-extension
    		// console.log( '**' + type + '**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( shader ) );

    		const errorLine = parseInt( errorMatches[ 1 ] );
    		return type.toUpperCase() + '\n\n' + errors + '\n\n' + handleSource( gl.getShaderSource( shader ), errorLine );

    	} else {

    		return errors;

    	}

    }

    function getTexelEncodingFunction( functionName, encoding ) {

    	const components = getEncodingComponents( encoding );
    	return 'vec4 ' + functionName + '( vec4 value ) { return LinearTo' + components[ 0 ] + components[ 1 ] + '; }';

    }

    function getToneMappingFunction( functionName, toneMapping ) {

    	let toneMappingName;

    	switch ( toneMapping ) {

    		case LinearToneMapping:
    			toneMappingName = 'Linear';
    			break;

    		case ReinhardToneMapping:
    			toneMappingName = 'Reinhard';
    			break;

    		case CineonToneMapping:
    			toneMappingName = 'OptimizedCineon';
    			break;

    		case ACESFilmicToneMapping:
    			toneMappingName = 'ACESFilmic';
    			break;

    		case CustomToneMapping:
    			toneMappingName = 'Custom';
    			break;

    		default:
    			console.warn( 'THREE.WebGLProgram: Unsupported toneMapping:', toneMapping );
    			toneMappingName = 'Linear';

    	}

    	return 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';

    }

    function generateExtensions( parameters ) {

    	const chunks = [
    		( parameters.extensionDerivatives || !! parameters.envMapCubeUVHeight || parameters.bumpMap || parameters.tangentSpaceNormalMap || parameters.clearcoatNormalMap || parameters.flatShading || parameters.shaderID === 'physical' ) ? '#extension GL_OES_standard_derivatives : enable' : '',
    		( parameters.extensionFragDepth || parameters.logarithmicDepthBuffer ) && parameters.rendererExtensionFragDepth ? '#extension GL_EXT_frag_depth : enable' : '',
    		( parameters.extensionDrawBuffers && parameters.rendererExtensionDrawBuffers ) ? '#extension GL_EXT_draw_buffers : require' : '',
    		( parameters.extensionShaderTextureLOD || parameters.envMap || parameters.transmission ) && parameters.rendererExtensionShaderTextureLod ? '#extension GL_EXT_shader_texture_lod : enable' : ''
    	];

    	return chunks.filter( filterEmptyLine ).join( '\n' );

    }

    function generateDefines( defines ) {

    	const chunks = [];

    	for ( const name in defines ) {

    		const value = defines[ name ];

    		if ( value === false ) continue;

    		chunks.push( '#define ' + name + ' ' + value );

    	}

    	return chunks.join( '\n' );

    }

    function fetchAttributeLocations( gl, program ) {

    	const attributes = {};

    	const n = gl.getProgramParameter( program, 35721 );

    	for ( let i = 0; i < n; i ++ ) {

    		const info = gl.getActiveAttrib( program, i );
    		const name = info.name;

    		let locationSize = 1;
    		if ( info.type === 35674 ) locationSize = 2;
    		if ( info.type === 35675 ) locationSize = 3;
    		if ( info.type === 35676 ) locationSize = 4;

    		// console.log( 'THREE.WebGLProgram: ACTIVE VERTEX ATTRIBUTE:', name, i );

    		attributes[ name ] = {
    			type: info.type,
    			location: gl.getAttribLocation( program, name ),
    			locationSize: locationSize
    		};

    	}

    	return attributes;

    }

    function filterEmptyLine( string ) {

    	return string !== '';

    }

    function replaceLightNums( string, parameters ) {

    	const numSpotLightCoords = parameters.numSpotLightShadows + parameters.numSpotLightMaps - parameters.numSpotLightShadowsWithMaps;

    	return string
    		.replace( /NUM_DIR_LIGHTS/g, parameters.numDirLights )
    		.replace( /NUM_SPOT_LIGHTS/g, parameters.numSpotLights )
    		.replace( /NUM_SPOT_LIGHT_MAPS/g, parameters.numSpotLightMaps )
    		.replace( /NUM_SPOT_LIGHT_COORDS/g, numSpotLightCoords )
    		.replace( /NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights )
    		.replace( /NUM_POINT_LIGHTS/g, parameters.numPointLights )
    		.replace( /NUM_HEMI_LIGHTS/g, parameters.numHemiLights )
    		.replace( /NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows )
    		.replace( /NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS/g, parameters.numSpotLightShadowsWithMaps )
    		.replace( /NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows )
    		.replace( /NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows );

    }

    function replaceClippingPlaneNums( string, parameters ) {

    	return string
    		.replace( /NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes )
    		.replace( /UNION_CLIPPING_PLANES/g, ( parameters.numClippingPlanes - parameters.numClipIntersection ) );

    }

    // Resolve Includes

    const includePattern = /^[ \t]*#include +<([\w\d./]+)>/gm;

    function resolveIncludes( string ) {

    	return string.replace( includePattern, includeReplacer );

    }

    function includeReplacer( match, include ) {

    	const string = ShaderChunk[ include ];

    	if ( string === undefined ) {

    		throw new Error( 'Can not resolve #include <' + include + '>' );

    	}

    	return resolveIncludes( string );

    }

    // Unroll Loops

    const unrollLoopPattern = /#pragma unroll_loop_start\s+for\s*\(\s*int\s+i\s*=\s*(\d+)\s*;\s*i\s*<\s*(\d+)\s*;\s*i\s*\+\+\s*\)\s*{([\s\S]+?)}\s+#pragma unroll_loop_end/g;

    function unrollLoops( string ) {

    	return string.replace( unrollLoopPattern, loopReplacer );

    }

    function loopReplacer( match, start, end, snippet ) {

    	let string = '';

    	for ( let i = parseInt( start ); i < parseInt( end ); i ++ ) {

    		string += snippet
    			.replace( /\[\s*i\s*\]/g, '[ ' + i + ' ]' )
    			.replace( /UNROLLED_LOOP_INDEX/g, i );

    	}

    	return string;

    }

    //

    function generatePrecision( parameters ) {

    	let precisionstring = 'precision ' + parameters.precision + ' float;\nprecision ' + parameters.precision + ' int;';

    	if ( parameters.precision === 'highp' ) {

    		precisionstring += '\n#define HIGH_PRECISION';

    	} else if ( parameters.precision === 'mediump' ) {

    		precisionstring += '\n#define MEDIUM_PRECISION';

    	} else if ( parameters.precision === 'lowp' ) {

    		precisionstring += '\n#define LOW_PRECISION';

    	}

    	return precisionstring;

    }

    function generateShadowMapTypeDefine( parameters ) {

    	let shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';

    	if ( parameters.shadowMapType === PCFShadowMap ) {

    		shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';

    	} else if ( parameters.shadowMapType === PCFSoftShadowMap ) {

    		shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';

    	} else if ( parameters.shadowMapType === VSMShadowMap ) {

    		shadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';

    	}

    	return shadowMapTypeDefine;

    }

    function generateEnvMapTypeDefine( parameters ) {

    	let envMapTypeDefine = 'ENVMAP_TYPE_CUBE';

    	if ( parameters.envMap ) {

    		switch ( parameters.envMapMode ) {

    			case CubeReflectionMapping:
    			case CubeRefractionMapping:
    				envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
    				break;

    			case CubeUVReflectionMapping:
    				envMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';
    				break;

    		}

    	}

    	return envMapTypeDefine;

    }

    function generateEnvMapModeDefine( parameters ) {

    	let envMapModeDefine = 'ENVMAP_MODE_REFLECTION';

    	if ( parameters.envMap ) {

    		switch ( parameters.envMapMode ) {

    			case CubeRefractionMapping:

    				envMapModeDefine = 'ENVMAP_MODE_REFRACTION';
    				break;

    		}

    	}

    	return envMapModeDefine;

    }

    function generateEnvMapBlendingDefine( parameters ) {

    	let envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';

    	if ( parameters.envMap ) {

    		switch ( parameters.combine ) {

    			case MultiplyOperation:
    				envMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';
    				break;

    			case MixOperation:
    				envMapBlendingDefine = 'ENVMAP_BLENDING_MIX';
    				break;

    			case AddOperation:
    				envMapBlendingDefine = 'ENVMAP_BLENDING_ADD';
    				break;

    		}

    	}

    	return envMapBlendingDefine;

    }

    function generateCubeUVSize( parameters ) {

    	const imageHeight = parameters.envMapCubeUVHeight;

    	if ( imageHeight === null ) return null;

    	const maxMip = Math.log2( imageHeight ) - 2;

    	const texelHeight = 1.0 / imageHeight;

    	const texelWidth = 1.0 / ( 3 * Math.max( Math.pow( 2, maxMip ), 7 * 16 ) );

    	return { texelWidth, texelHeight, maxMip };

    }

    function WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {

    	// TODO Send this event to Three.js DevTools
    	// console.log( 'WebGLProgram', cacheKey );

    	const gl = renderer.getContext();

    	const defines = parameters.defines;

    	let vertexShader = parameters.vertexShader;
    	let fragmentShader = parameters.fragmentShader;

    	const shadowMapTypeDefine = generateShadowMapTypeDefine( parameters );
    	const envMapTypeDefine = generateEnvMapTypeDefine( parameters );
    	const envMapModeDefine = generateEnvMapModeDefine( parameters );
    	const envMapBlendingDefine = generateEnvMapBlendingDefine( parameters );
    	const envMapCubeUVSize = generateCubeUVSize( parameters );

    	const customExtensions = parameters.isWebGL2 ? '' : generateExtensions( parameters );

    	const customDefines = generateDefines( defines );

    	const program = gl.createProgram();

    	let prefixVertex, prefixFragment;
    	let versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + '\n' : '';

    	if ( parameters.isRawShaderMaterial ) {

    		prefixVertex = [

    			customDefines

    		].filter( filterEmptyLine ).join( '\n' );

    		if ( prefixVertex.length > 0 ) {

    			prefixVertex += '\n';

    		}

    		prefixFragment = [

    			customExtensions,
    			customDefines

    		].filter( filterEmptyLine ).join( '\n' );

    		if ( prefixFragment.length > 0 ) {

    			prefixFragment += '\n';

    		}

    	} else {

    		prefixVertex = [

    			generatePrecision( parameters ),

    			'#define SHADER_NAME ' + parameters.shaderName,

    			customDefines,

    			parameters.instancing ? '#define USE_INSTANCING' : '',
    			parameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '',

    			parameters.supportsVertexTextures ? '#define VERTEX_TEXTURES' : '',

    			( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',
    			( parameters.useFog && parameters.fogExp2 ) ? '#define FOG_EXP2' : '',

    			parameters.map ? '#define USE_MAP' : '',
    			parameters.envMap ? '#define USE_ENVMAP' : '',
    			parameters.envMap ? '#define ' + envMapModeDefine : '',
    			parameters.lightMap ? '#define USE_LIGHTMAP' : '',
    			parameters.aoMap ? '#define USE_AOMAP' : '',
    			parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
    			parameters.bumpMap ? '#define USE_BUMPMAP' : '',
    			parameters.normalMap ? '#define USE_NORMALMAP' : '',
    			( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',
    			( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',

    			parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
    			parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
    			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',

    			parameters.iridescenceMap ? '#define USE_IRIDESCENCEMAP' : '',
    			parameters.iridescenceThicknessMap ? '#define USE_IRIDESCENCE_THICKNESSMAP' : '',

    			parameters.displacementMap && parameters.supportsVertexTextures ? '#define USE_DISPLACEMENTMAP' : '',

    			parameters.specularMap ? '#define USE_SPECULARMAP' : '',
    			parameters.specularIntensityMap ? '#define USE_SPECULARINTENSITYMAP' : '',
    			parameters.specularColorMap ? '#define USE_SPECULARCOLORMAP' : '',

    			parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
    			parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
    			parameters.alphaMap ? '#define USE_ALPHAMAP' : '',

    			parameters.transmission ? '#define USE_TRANSMISSION' : '',
    			parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
    			parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '',

    			parameters.sheenColorMap ? '#define USE_SHEENCOLORMAP' : '',
    			parameters.sheenRoughnessMap ? '#define USE_SHEENROUGHNESSMAP' : '',

    			parameters.vertexTangents ? '#define USE_TANGENT' : '',
    			parameters.vertexColors ? '#define USE_COLOR' : '',
    			parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '',
    			parameters.vertexUvs ? '#define USE_UV' : '',
    			parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '',

    			parameters.flatShading ? '#define FLAT_SHADED' : '',

    			parameters.skinning ? '#define USE_SKINNING' : '',

    			parameters.morphTargets ? '#define USE_MORPHTARGETS' : '',
    			parameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '',
    			( parameters.morphColors && parameters.isWebGL2 ) ? '#define USE_MORPHCOLORS' : '',
    			( parameters.morphTargetsCount > 0 && parameters.isWebGL2 ) ? '#define MORPHTARGETS_TEXTURE' : '',
    			( parameters.morphTargetsCount > 0 && parameters.isWebGL2 ) ? '#define MORPHTARGETS_TEXTURE_STRIDE ' + parameters.morphTextureStride : '',
    			( parameters.morphTargetsCount > 0 && parameters.isWebGL2 ) ? '#define MORPHTARGETS_COUNT ' + parameters.morphTargetsCount : '',
    			parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
    			parameters.flipSided ? '#define FLIP_SIDED' : '',

    			parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
    			parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',

    			parameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '',

    			parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
    			( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',

    			'uniform mat4 modelMatrix;',
    			'uniform mat4 modelViewMatrix;',
    			'uniform mat4 projectionMatrix;',
    			'uniform mat4 viewMatrix;',
    			'uniform mat3 normalMatrix;',
    			'uniform vec3 cameraPosition;',
    			'uniform bool isOrthographic;',

    			'#ifdef USE_INSTANCING',

    			'	attribute mat4 instanceMatrix;',

    			'#endif',

    			'#ifdef USE_INSTANCING_COLOR',

    			'	attribute vec3 instanceColor;',

    			'#endif',

    			'attribute vec3 position;',
    			'attribute vec3 normal;',
    			'attribute vec2 uv;',

    			'#ifdef USE_TANGENT',

    			'	attribute vec4 tangent;',

    			'#endif',

    			'#if defined( USE_COLOR_ALPHA )',

    			'	attribute vec4 color;',

    			'#elif defined( USE_COLOR )',

    			'	attribute vec3 color;',

    			'#endif',

    			'#if ( defined( USE_MORPHTARGETS ) && ! defined( MORPHTARGETS_TEXTURE ) )',

    			'	attribute vec3 morphTarget0;',
    			'	attribute vec3 morphTarget1;',
    			'	attribute vec3 morphTarget2;',
    			'	attribute vec3 morphTarget3;',

    			'	#ifdef USE_MORPHNORMALS',

    			'		attribute vec3 morphNormal0;',
    			'		attribute vec3 morphNormal1;',
    			'		attribute vec3 morphNormal2;',
    			'		attribute vec3 morphNormal3;',

    			'	#else',

    			'		attribute vec3 morphTarget4;',
    			'		attribute vec3 morphTarget5;',
    			'		attribute vec3 morphTarget6;',
    			'		attribute vec3 morphTarget7;',

    			'	#endif',

    			'#endif',

    			'#ifdef USE_SKINNING',

    			'	attribute vec4 skinIndex;',
    			'	attribute vec4 skinWeight;',

    			'#endif',

    			'\n'

    		].filter( filterEmptyLine ).join( '\n' );

    		prefixFragment = [

    			customExtensions,

    			generatePrecision( parameters ),

    			'#define SHADER_NAME ' + parameters.shaderName,

    			customDefines,

    			( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',
    			( parameters.useFog && parameters.fogExp2 ) ? '#define FOG_EXP2' : '',

    			parameters.map ? '#define USE_MAP' : '',
    			parameters.matcap ? '#define USE_MATCAP' : '',
    			parameters.envMap ? '#define USE_ENVMAP' : '',
    			parameters.envMap ? '#define ' + envMapTypeDefine : '',
    			parameters.envMap ? '#define ' + envMapModeDefine : '',
    			parameters.envMap ? '#define ' + envMapBlendingDefine : '',
    			envMapCubeUVSize ? '#define CUBEUV_TEXEL_WIDTH ' + envMapCubeUVSize.texelWidth : '',
    			envMapCubeUVSize ? '#define CUBEUV_TEXEL_HEIGHT ' + envMapCubeUVSize.texelHeight : '',
    			envMapCubeUVSize ? '#define CUBEUV_MAX_MIP ' + envMapCubeUVSize.maxMip + '.0' : '',
    			parameters.lightMap ? '#define USE_LIGHTMAP' : '',
    			parameters.aoMap ? '#define USE_AOMAP' : '',
    			parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
    			parameters.bumpMap ? '#define USE_BUMPMAP' : '',
    			parameters.normalMap ? '#define USE_NORMALMAP' : '',
    			( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',
    			( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',

    			parameters.clearcoat ? '#define USE_CLEARCOAT' : '',
    			parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
    			parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
    			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',

    			parameters.iridescence ? '#define USE_IRIDESCENCE' : '',
    			parameters.iridescenceMap ? '#define USE_IRIDESCENCEMAP' : '',
    			parameters.iridescenceThicknessMap ? '#define USE_IRIDESCENCE_THICKNESSMAP' : '',

    			parameters.specularMap ? '#define USE_SPECULARMAP' : '',
    			parameters.specularIntensityMap ? '#define USE_SPECULARINTENSITYMAP' : '',
    			parameters.specularColorMap ? '#define USE_SPECULARCOLORMAP' : '',
    			parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
    			parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',

    			parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
    			parameters.alphaTest ? '#define USE_ALPHATEST' : '',

    			parameters.sheen ? '#define USE_SHEEN' : '',
    			parameters.sheenColorMap ? '#define USE_SHEENCOLORMAP' : '',
    			parameters.sheenRoughnessMap ? '#define USE_SHEENROUGHNESSMAP' : '',

    			parameters.transmission ? '#define USE_TRANSMISSION' : '',
    			parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
    			parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '',

    			parameters.decodeVideoTexture ? '#define DECODE_VIDEO_TEXTURE' : '',

    			parameters.vertexTangents ? '#define USE_TANGENT' : '',
    			parameters.vertexColors || parameters.instancingColor ? '#define USE_COLOR' : '',
    			parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '',
    			parameters.vertexUvs ? '#define USE_UV' : '',
    			parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '',

    			parameters.gradientMap ? '#define USE_GRADIENTMAP' : '',

    			parameters.flatShading ? '#define FLAT_SHADED' : '',

    			parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
    			parameters.flipSided ? '#define FLIP_SIDED' : '',

    			parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
    			parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',

    			parameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '',

    			parameters.physicallyCorrectLights ? '#define PHYSICALLY_CORRECT_LIGHTS' : '',

    			parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
    			( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',

    			'uniform mat4 viewMatrix;',
    			'uniform vec3 cameraPosition;',
    			'uniform bool isOrthographic;',

    			( parameters.toneMapping !== NoToneMapping ) ? '#define TONE_MAPPING' : '',
    			( parameters.toneMapping !== NoToneMapping ) ? ShaderChunk[ 'tonemapping_pars_fragment' ] : '', // this code is required here because it is used by the toneMapping() function defined below
    			( parameters.toneMapping !== NoToneMapping ) ? getToneMappingFunction( 'toneMapping', parameters.toneMapping ) : '',

    			parameters.dithering ? '#define DITHERING' : '',
    			parameters.opaque ? '#define OPAQUE' : '',

    			ShaderChunk[ 'encodings_pars_fragment' ], // this code is required here because it is used by the various encoding/decoding function defined below
    			getTexelEncodingFunction( 'linearToOutputTexel', parameters.outputEncoding ),

    			parameters.useDepthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '',

    			'\n'

    		].filter( filterEmptyLine ).join( '\n' );

    	}

    	vertexShader = resolveIncludes( vertexShader );
    	vertexShader = replaceLightNums( vertexShader, parameters );
    	vertexShader = replaceClippingPlaneNums( vertexShader, parameters );

    	fragmentShader = resolveIncludes( fragmentShader );
    	fragmentShader = replaceLightNums( fragmentShader, parameters );
    	fragmentShader = replaceClippingPlaneNums( fragmentShader, parameters );

    	vertexShader = unrollLoops( vertexShader );
    	fragmentShader = unrollLoops( fragmentShader );

    	if ( parameters.isWebGL2 && parameters.isRawShaderMaterial !== true ) {

    		// GLSL 3.0 conversion for built-in materials and ShaderMaterial

    		versionString = '#version 300 es\n';

    		prefixVertex = [
    			'precision mediump sampler2DArray;',
    			'#define attribute in',
    			'#define varying out',
    			'#define texture2D texture'
    		].join( '\n' ) + '\n' + prefixVertex;

    		prefixFragment = [
    			'#define varying in',
    			( parameters.glslVersion === GLSL3 ) ? '' : 'layout(location = 0) out highp vec4 pc_fragColor;',
    			( parameters.glslVersion === GLSL3 ) ? '' : '#define gl_FragColor pc_fragColor',
    			'#define gl_FragDepthEXT gl_FragDepth',
    			'#define texture2D texture',
    			'#define textureCube texture',
    			'#define texture2DProj textureProj',
    			'#define texture2DLodEXT textureLod',
    			'#define texture2DProjLodEXT textureProjLod',
    			'#define textureCubeLodEXT textureLod',
    			'#define texture2DGradEXT textureGrad',
    			'#define texture2DProjGradEXT textureProjGrad',
    			'#define textureCubeGradEXT textureGrad'
    		].join( '\n' ) + '\n' + prefixFragment;

    	}

    	const vertexGlsl = versionString + prefixVertex + vertexShader;
    	const fragmentGlsl = versionString + prefixFragment + fragmentShader;

    	// console.log( '*VERTEX*', vertexGlsl );
    	// console.log( '*FRAGMENT*', fragmentGlsl );

    	const glVertexShader = WebGLShader( gl, 35633, vertexGlsl );
    	const glFragmentShader = WebGLShader( gl, 35632, fragmentGlsl );

    	gl.attachShader( program, glVertexShader );
    	gl.attachShader( program, glFragmentShader );

    	// Force a particular attribute to index 0.

    	if ( parameters.index0AttributeName !== undefined ) {

    		gl.bindAttribLocation( program, 0, parameters.index0AttributeName );

    	} else if ( parameters.morphTargets === true ) {

    		// programs with morphTargets displace position out of attribute 0
    		gl.bindAttribLocation( program, 0, 'position' );

    	}

    	gl.linkProgram( program );

    	// check for link errors
    	if ( renderer.debug.checkShaderErrors ) {

    		const programLog = gl.getProgramInfoLog( program ).trim();
    		const vertexLog = gl.getShaderInfoLog( glVertexShader ).trim();
    		const fragmentLog = gl.getShaderInfoLog( glFragmentShader ).trim();

    		let runnable = true;
    		let haveDiagnostics = true;

    		if ( gl.getProgramParameter( program, 35714 ) === false ) {

    			runnable = false;

    			const vertexErrors = getShaderErrors( gl, glVertexShader, 'vertex' );
    			const fragmentErrors = getShaderErrors( gl, glFragmentShader, 'fragment' );

    			console.error(
    				'THREE.WebGLProgram: Shader Error ' + gl.getError() + ' - ' +
    				'VALIDATE_STATUS ' + gl.getProgramParameter( program, 35715 ) + '\n\n' +
    				'Program Info Log: ' + programLog + '\n' +
    				vertexErrors + '\n' +
    				fragmentErrors
    			);

    		} else if ( programLog !== '' ) {

    			console.warn( 'THREE.WebGLProgram: Program Info Log:', programLog );

    		} else if ( vertexLog === '' || fragmentLog === '' ) {

    			haveDiagnostics = false;

    		}

    		if ( haveDiagnostics ) {

    			this.diagnostics = {

    				runnable: runnable,

    				programLog: programLog,

    				vertexShader: {

    					log: vertexLog,
    					prefix: prefixVertex

    				},

    				fragmentShader: {

    					log: fragmentLog,
    					prefix: prefixFragment

    				}

    			};

    		}

    	}

    	// Clean up

    	// Crashes in iOS9 and iOS10. #18402
    	// gl.detachShader( program, glVertexShader );
    	// gl.detachShader( program, glFragmentShader );

    	gl.deleteShader( glVertexShader );
    	gl.deleteShader( glFragmentShader );

    	// set up caching for uniform locations

    	let cachedUniforms;

    	this.getUniforms = function () {

    		if ( cachedUniforms === undefined ) {

    			cachedUniforms = new WebGLUniforms( gl, program );

    		}

    		return cachedUniforms;

    	};

    	// set up caching for attribute locations

    	let cachedAttributes;

    	this.getAttributes = function () {

    		if ( cachedAttributes === undefined ) {

    			cachedAttributes = fetchAttributeLocations( gl, program );

    		}

    		return cachedAttributes;

    	};

    	// free resource

    	this.destroy = function () {

    		bindingStates.releaseStatesOfProgram( this );

    		gl.deleteProgram( program );
    		this.program = undefined;

    	};

    	//

    	this.name = parameters.shaderName;
    	this.id = programIdCount ++;
    	this.cacheKey = cacheKey;
    	this.usedTimes = 1;
    	this.program = program;
    	this.vertexShader = glVertexShader;
    	this.fragmentShader = glFragmentShader;

    	return this;

    }

    let _id = 0;

    class WebGLShaderCache {

    	constructor() {

    		this.shaderCache = new Map();
    		this.materialCache = new Map();

    	}

    	update( material ) {

    		const vertexShader = material.vertexShader;
    		const fragmentShader = material.fragmentShader;

    		const vertexShaderStage = this._getShaderStage( vertexShader );
    		const fragmentShaderStage = this._getShaderStage( fragmentShader );

    		const materialShaders = this._getShaderCacheForMaterial( material );

    		if ( materialShaders.has( vertexShaderStage ) === false ) {

    			materialShaders.add( vertexShaderStage );
    			vertexShaderStage.usedTimes ++;

    		}

    		if ( materialShaders.has( fragmentShaderStage ) === false ) {

    			materialShaders.add( fragmentShaderStage );
    			fragmentShaderStage.usedTimes ++;

    		}

    		return this;

    	}

    	remove( material ) {

    		const materialShaders = this.materialCache.get( material );

    		for ( const shaderStage of materialShaders ) {

    			shaderStage.usedTimes --;

    			if ( shaderStage.usedTimes === 0 ) this.shaderCache.delete( shaderStage.code );

    		}

    		this.materialCache.delete( material );

    		return this;

    	}

    	getVertexShaderID( material ) {

    		return this._getShaderStage( material.vertexShader ).id;

    	}

    	getFragmentShaderID( material ) {

    		return this._getShaderStage( material.fragmentShader ).id;

    	}

    	dispose() {

    		this.shaderCache.clear();
    		this.materialCache.clear();

    	}

    	_getShaderCacheForMaterial( material ) {

    		const cache = this.materialCache;
    		let set = cache.get( material );

    		if ( set === undefined ) {

    			set = new Set();
    			cache.set( material, set );

    		}

    		return set;

    	}

    	_getShaderStage( code ) {

    		const cache = this.shaderCache;
    		let stage = cache.get( code );

    		if ( stage === undefined ) {

    			stage = new WebGLShaderStage( code );
    			cache.set( code, stage );

    		}

    		return stage;

    	}

    }

    class WebGLShaderStage {

    	constructor( code ) {

    		this.id = _id ++;

    		this.code = code;
    		this.usedTimes = 0;

    	}

    }

    function WebGLPrograms( renderer, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping ) {

    	const _programLayers = new Layers();
    	const _customShaders = new WebGLShaderCache();
    	const programs = [];

    	const isWebGL2 = capabilities.isWebGL2;
    	const logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;
    	const vertexTextures = capabilities.vertexTextures;
    	let precision = capabilities.precision;

    	const shaderIDs = {
    		MeshDepthMaterial: 'depth',
    		MeshDistanceMaterial: 'distanceRGBA',
    		MeshNormalMaterial: 'normal',
    		MeshBasicMaterial: 'basic',
    		MeshLambertMaterial: 'lambert',
    		MeshPhongMaterial: 'phong',
    		MeshToonMaterial: 'toon',
    		MeshStandardMaterial: 'physical',
    		MeshPhysicalMaterial: 'physical',
    		MeshMatcapMaterial: 'matcap',
    		LineBasicMaterial: 'basic',
    		LineDashedMaterial: 'dashed',
    		PointsMaterial: 'points',
    		ShadowMaterial: 'shadow',
    		SpriteMaterial: 'sprite'
    	};

    	function getParameters( material, lights, shadows, scene, object ) {

    		const fog = scene.fog;
    		const geometry = object.geometry;
    		const environment = material.isMeshStandardMaterial ? scene.environment : null;

    		const envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || environment );
    		const envMapCubeUVHeight = ( !! envMap ) && ( envMap.mapping === CubeUVReflectionMapping ) ? envMap.image.height : null;

    		const shaderID = shaderIDs[ material.type ];

    		// heuristics to create shader parameters according to lights in the scene
    		// (not to blow over maxLights budget)

    		if ( material.precision !== null ) {

    			precision = capabilities.getMaxPrecision( material.precision );

    			if ( precision !== material.precision ) {

    				console.warn( 'THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.' );

    			}

    		}

    		//

    		const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
    		const morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;

    		let morphTextureStride = 0;

    		if ( geometry.morphAttributes.position !== undefined ) morphTextureStride = 1;
    		if ( geometry.morphAttributes.normal !== undefined ) morphTextureStride = 2;
    		if ( geometry.morphAttributes.color !== undefined ) morphTextureStride = 3;

    		//

    		let vertexShader, fragmentShader;
    		let customVertexShaderID, customFragmentShaderID;

    		if ( shaderID ) {

    			const shader = ShaderLib[ shaderID ];

    			vertexShader = shader.vertexShader;
    			fragmentShader = shader.fragmentShader;

    		} else {

    			vertexShader = material.vertexShader;
    			fragmentShader = material.fragmentShader;

    			_customShaders.update( material );

    			customVertexShaderID = _customShaders.getVertexShaderID( material );
    			customFragmentShaderID = _customShaders.getFragmentShaderID( material );

    		}

    		const currentRenderTarget = renderer.getRenderTarget();

    		const useAlphaTest = material.alphaTest > 0;
    		const useClearcoat = material.clearcoat > 0;
    		const useIridescence = material.iridescence > 0;

    		const parameters = {

    			isWebGL2: isWebGL2,

    			shaderID: shaderID,
    			shaderName: material.type,

    			vertexShader: vertexShader,
    			fragmentShader: fragmentShader,
    			defines: material.defines,

    			customVertexShaderID: customVertexShaderID,
    			customFragmentShaderID: customFragmentShaderID,

    			isRawShaderMaterial: material.isRawShaderMaterial === true,
    			glslVersion: material.glslVersion,

    			precision: precision,

    			instancing: object.isInstancedMesh === true,
    			instancingColor: object.isInstancedMesh === true && object.instanceColor !== null,

    			supportsVertexTextures: vertexTextures,
    			outputEncoding: ( currentRenderTarget === null ) ? renderer.outputEncoding : ( currentRenderTarget.isXRRenderTarget === true ? currentRenderTarget.texture.encoding : LinearEncoding ),
    			map: !! material.map,
    			matcap: !! material.matcap,
    			envMap: !! envMap,
    			envMapMode: envMap && envMap.mapping,
    			envMapCubeUVHeight: envMapCubeUVHeight,
    			lightMap: !! material.lightMap,
    			aoMap: !! material.aoMap,
    			emissiveMap: !! material.emissiveMap,
    			bumpMap: !! material.bumpMap,
    			normalMap: !! material.normalMap,
    			objectSpaceNormalMap: material.normalMapType === ObjectSpaceNormalMap,
    			tangentSpaceNormalMap: material.normalMapType === TangentSpaceNormalMap,

    			decodeVideoTexture: !! material.map && ( material.map.isVideoTexture === true ) && ( material.map.encoding === sRGBEncoding ),

    			clearcoat: useClearcoat,
    			clearcoatMap: useClearcoat && !! material.clearcoatMap,
    			clearcoatRoughnessMap: useClearcoat && !! material.clearcoatRoughnessMap,
    			clearcoatNormalMap: useClearcoat && !! material.clearcoatNormalMap,

    			iridescence: useIridescence,
    			iridescenceMap: useIridescence && !! material.iridescenceMap,
    			iridescenceThicknessMap: useIridescence && !! material.iridescenceThicknessMap,

    			displacementMap: !! material.displacementMap,
    			roughnessMap: !! material.roughnessMap,
    			metalnessMap: !! material.metalnessMap,
    			specularMap: !! material.specularMap,
    			specularIntensityMap: !! material.specularIntensityMap,
    			specularColorMap: !! material.specularColorMap,

    			opaque: material.transparent === false && material.blending === NormalBlending,

    			alphaMap: !! material.alphaMap,
    			alphaTest: useAlphaTest,

    			gradientMap: !! material.gradientMap,

    			sheen: material.sheen > 0,
    			sheenColorMap: !! material.sheenColorMap,
    			sheenRoughnessMap: !! material.sheenRoughnessMap,

    			transmission: material.transmission > 0,
    			transmissionMap: !! material.transmissionMap,
    			thicknessMap: !! material.thicknessMap,

    			combine: material.combine,

    			vertexTangents: ( !! material.normalMap && !! geometry.attributes.tangent ),
    			vertexColors: material.vertexColors,
    			vertexAlphas: material.vertexColors === true && !! geometry.attributes.color && geometry.attributes.color.itemSize === 4,
    			vertexUvs: !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearcoatMap || !! material.clearcoatRoughnessMap || !! material.clearcoatNormalMap || !! material.iridescenceMap || !! material.iridescenceThicknessMap || !! material.displacementMap || !! material.transmissionMap || !! material.thicknessMap || !! material.specularIntensityMap || !! material.specularColorMap || !! material.sheenColorMap || !! material.sheenRoughnessMap,
    			uvsVertexOnly: ! ( !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearcoatNormalMap || !! material.iridescenceMap || !! material.iridescenceThicknessMap || material.transmission > 0 || !! material.transmissionMap || !! material.thicknessMap || !! material.specularIntensityMap || !! material.specularColorMap || material.sheen > 0 || !! material.sheenColorMap || !! material.sheenRoughnessMap ) && !! material.displacementMap,

    			fog: !! fog,
    			useFog: material.fog === true,
    			fogExp2: ( fog && fog.isFogExp2 ),

    			flatShading: !! material.flatShading,

    			sizeAttenuation: material.sizeAttenuation,
    			logarithmicDepthBuffer: logarithmicDepthBuffer,

    			skinning: object.isSkinnedMesh === true,

    			morphTargets: geometry.morphAttributes.position !== undefined,
    			morphNormals: geometry.morphAttributes.normal !== undefined,
    			morphColors: geometry.morphAttributes.color !== undefined,
    			morphTargetsCount: morphTargetsCount,
    			morphTextureStride: morphTextureStride,

    			numDirLights: lights.directional.length,
    			numPointLights: lights.point.length,
    			numSpotLights: lights.spot.length,
    			numSpotLightMaps: lights.spotLightMap.length,
    			numRectAreaLights: lights.rectArea.length,
    			numHemiLights: lights.hemi.length,

    			numDirLightShadows: lights.directionalShadowMap.length,
    			numPointLightShadows: lights.pointShadowMap.length,
    			numSpotLightShadows: lights.spotShadowMap.length,
    			numSpotLightShadowsWithMaps: lights.numSpotLightShadowsWithMaps,

    			numClippingPlanes: clipping.numPlanes,
    			numClipIntersection: clipping.numIntersection,

    			dithering: material.dithering,

    			shadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,
    			shadowMapType: renderer.shadowMap.type,

    			toneMapping: material.toneMapped ? renderer.toneMapping : NoToneMapping,
    			physicallyCorrectLights: renderer.physicallyCorrectLights,

    			premultipliedAlpha: material.premultipliedAlpha,

    			doubleSided: material.side === DoubleSide,
    			flipSided: material.side === BackSide,

    			useDepthPacking: !! material.depthPacking,
    			depthPacking: material.depthPacking || 0,

    			index0AttributeName: material.index0AttributeName,

    			extensionDerivatives: material.extensions && material.extensions.derivatives,
    			extensionFragDepth: material.extensions && material.extensions.fragDepth,
    			extensionDrawBuffers: material.extensions && material.extensions.drawBuffers,
    			extensionShaderTextureLOD: material.extensions && material.extensions.shaderTextureLOD,

    			rendererExtensionFragDepth: isWebGL2 || extensions.has( 'EXT_frag_depth' ),
    			rendererExtensionDrawBuffers: isWebGL2 || extensions.has( 'WEBGL_draw_buffers' ),
    			rendererExtensionShaderTextureLod: isWebGL2 || extensions.has( 'EXT_shader_texture_lod' ),

    			customProgramCacheKey: material.customProgramCacheKey()

    		};

    		return parameters;

    	}

    	function getProgramCacheKey( parameters ) {

    		const array = [];

    		if ( parameters.shaderID ) {

    			array.push( parameters.shaderID );

    		} else {

    			array.push( parameters.customVertexShaderID );
    			array.push( parameters.customFragmentShaderID );

    		}

    		if ( parameters.defines !== undefined ) {

    			for ( const name in parameters.defines ) {

    				array.push( name );
    				array.push( parameters.defines[ name ] );

    			}

    		}

    		if ( parameters.isRawShaderMaterial === false ) {

    			getProgramCacheKeyParameters( array, parameters );
    			getProgramCacheKeyBooleans( array, parameters );
    			array.push( renderer.outputEncoding );

    		}

    		array.push( parameters.customProgramCacheKey );

    		return array.join();

    	}

    	function getProgramCacheKeyParameters( array, parameters ) {

    		array.push( parameters.precision );
    		array.push( parameters.outputEncoding );
    		array.push( parameters.envMapMode );
    		array.push( parameters.envMapCubeUVHeight );
    		array.push( parameters.combine );
    		array.push( parameters.vertexUvs );
    		array.push( parameters.fogExp2 );
    		array.push( parameters.sizeAttenuation );
    		array.push( parameters.morphTargetsCount );
    		array.push( parameters.morphAttributeCount );
    		array.push( parameters.numDirLights );
    		array.push( parameters.numPointLights );
    		array.push( parameters.numSpotLights );
    		array.push( parameters.numSpotLightMaps );
    		array.push( parameters.numHemiLights );
    		array.push( parameters.numRectAreaLights );
    		array.push( parameters.numDirLightShadows );
    		array.push( parameters.numPointLightShadows );
    		array.push( parameters.numSpotLightShadows );
    		array.push( parameters.numSpotLightShadowsWithMaps );
    		array.push( parameters.shadowMapType );
    		array.push( parameters.toneMapping );
    		array.push( parameters.numClippingPlanes );
    		array.push( parameters.numClipIntersection );
    		array.push( parameters.depthPacking );

    	}

    	function getProgramCacheKeyBooleans( array, parameters ) {

    		_programLayers.disableAll();

    		if ( parameters.isWebGL2 )
    			_programLayers.enable( 0 );
    		if ( parameters.supportsVertexTextures )
    			_programLayers.enable( 1 );
    		if ( parameters.instancing )
    			_programLayers.enable( 2 );
    		if ( parameters.instancingColor )
    			_programLayers.enable( 3 );
    		if ( parameters.map )
    			_programLayers.enable( 4 );
    		if ( parameters.matcap )
    			_programLayers.enable( 5 );
    		if ( parameters.envMap )
    			_programLayers.enable( 6 );
    		if ( parameters.lightMap )
    			_programLayers.enable( 7 );
    		if ( parameters.aoMap )
    			_programLayers.enable( 8 );
    		if ( parameters.emissiveMap )
    			_programLayers.enable( 9 );
    		if ( parameters.bumpMap )
    			_programLayers.enable( 10 );
    		if ( parameters.normalMap )
    			_programLayers.enable( 11 );
    		if ( parameters.objectSpaceNormalMap )
    			_programLayers.enable( 12 );
    		if ( parameters.tangentSpaceNormalMap )
    			_programLayers.enable( 13 );
    		if ( parameters.clearcoat )
    			_programLayers.enable( 14 );
    		if ( parameters.clearcoatMap )
    			_programLayers.enable( 15 );
    		if ( parameters.clearcoatRoughnessMap )
    			_programLayers.enable( 16 );
    		if ( parameters.clearcoatNormalMap )
    			_programLayers.enable( 17 );
    		if ( parameters.iridescence )
    			_programLayers.enable( 18 );
    		if ( parameters.iridescenceMap )
    			_programLayers.enable( 19 );
    		if ( parameters.iridescenceThicknessMap )
    			_programLayers.enable( 20 );
    		if ( parameters.displacementMap )
    			_programLayers.enable( 21 );
    		if ( parameters.specularMap )
    			_programLayers.enable( 22 );
    		if ( parameters.roughnessMap )
    			_programLayers.enable( 23 );
    		if ( parameters.metalnessMap )
    			_programLayers.enable( 24 );
    		if ( parameters.gradientMap )
    			_programLayers.enable( 25 );
    		if ( parameters.alphaMap )
    			_programLayers.enable( 26 );
    		if ( parameters.alphaTest )
    			_programLayers.enable( 27 );
    		if ( parameters.vertexColors )
    			_programLayers.enable( 28 );
    		if ( parameters.vertexAlphas )
    			_programLayers.enable( 29 );
    		if ( parameters.vertexUvs )
    			_programLayers.enable( 30 );
    		if ( parameters.vertexTangents )
    			_programLayers.enable( 31 );
    		if ( parameters.uvsVertexOnly )
    			_programLayers.enable( 32 );

    		array.push( _programLayers.mask );
    		_programLayers.disableAll();

    		if ( parameters.fog )
    			_programLayers.enable( 0 );
    		if ( parameters.useFog )
    			_programLayers.enable( 1 );
    		if ( parameters.flatShading )
    			_programLayers.enable( 2 );
    		if ( parameters.logarithmicDepthBuffer )
    			_programLayers.enable( 3 );
    		if ( parameters.skinning )
    			_programLayers.enable( 4 );
    		if ( parameters.morphTargets )
    			_programLayers.enable( 5 );
    		if ( parameters.morphNormals )
    			_programLayers.enable( 6 );
    		if ( parameters.morphColors )
    			_programLayers.enable( 7 );
    		if ( parameters.premultipliedAlpha )
    			_programLayers.enable( 8 );
    		if ( parameters.shadowMapEnabled )
    			_programLayers.enable( 9 );
    		if ( parameters.physicallyCorrectLights )
    			_programLayers.enable( 10 );
    		if ( parameters.doubleSided )
    			_programLayers.enable( 11 );
    		if ( parameters.flipSided )
    			_programLayers.enable( 12 );
    		if ( parameters.useDepthPacking )
    			_programLayers.enable( 13 );
    		if ( parameters.dithering )
    			_programLayers.enable( 14 );
    		if ( parameters.specularIntensityMap )
    			_programLayers.enable( 15 );
    		if ( parameters.specularColorMap )
    			_programLayers.enable( 16 );
    		if ( parameters.transmission )
    			_programLayers.enable( 17 );
    		if ( parameters.transmissionMap )
    			_programLayers.enable( 18 );
    		if ( parameters.thicknessMap )
    			_programLayers.enable( 19 );
    		if ( parameters.sheen )
    			_programLayers.enable( 20 );
    		if ( parameters.sheenColorMap )
    			_programLayers.enable( 21 );
    		if ( parameters.sheenRoughnessMap )
    			_programLayers.enable( 22 );
    		if ( parameters.decodeVideoTexture )
    			_programLayers.enable( 23 );
    		if ( parameters.opaque )
    			_programLayers.enable( 24 );

    		array.push( _programLayers.mask );

    	}

    	function getUniforms( material ) {

    		const shaderID = shaderIDs[ material.type ];
    		let uniforms;

    		if ( shaderID ) {

    			const shader = ShaderLib[ shaderID ];
    			uniforms = UniformsUtils.clone( shader.uniforms );

    		} else {

    			uniforms = material.uniforms;

    		}

    		return uniforms;

    	}

    	function acquireProgram( parameters, cacheKey ) {

    		let program;

    		// Check if code has been already compiled
    		for ( let p = 0, pl = programs.length; p < pl; p ++ ) {

    			const preexistingProgram = programs[ p ];

    			if ( preexistingProgram.cacheKey === cacheKey ) {

    				program = preexistingProgram;
    				++ program.usedTimes;

    				break;

    			}

    		}

    		if ( program === undefined ) {

    			program = new WebGLProgram( renderer, cacheKey, parameters, bindingStates );
    			programs.push( program );

    		}

    		return program;

    	}

    	function releaseProgram( program ) {

    		if ( -- program.usedTimes === 0 ) {

    			// Remove from unordered set
    			const i = programs.indexOf( program );
    			programs[ i ] = programs[ programs.length - 1 ];
    			programs.pop();

    			// Free WebGL resources
    			program.destroy();

    		}

    	}

    	function releaseShaderCache( material ) {

    		_customShaders.remove( material );

    	}

    	function dispose() {

    		_customShaders.dispose();

    	}

    	return {
    		getParameters: getParameters,
    		getProgramCacheKey: getProgramCacheKey,
    		getUniforms: getUniforms,
    		acquireProgram: acquireProgram,
    		releaseProgram: releaseProgram,
    		releaseShaderCache: releaseShaderCache,
    		// Exposed for resource monitoring & error feedback via renderer.info:
    		programs: programs,
    		dispose: dispose
    	};

    }

    function WebGLProperties() {

    	let properties = new WeakMap();

    	function get( object ) {

    		let map = properties.get( object );

    		if ( map === undefined ) {

    			map = {};
    			properties.set( object, map );

    		}

    		return map;

    	}

    	function remove( object ) {

    		properties.delete( object );

    	}

    	function update( object, key, value ) {

    		properties.get( object )[ key ] = value;

    	}

    	function dispose() {

    		properties = new WeakMap();

    	}

    	return {
    		get: get,
    		remove: remove,
    		update: update,
    		dispose: dispose
    	};

    }

    function painterSortStable( a, b ) {

    	if ( a.groupOrder !== b.groupOrder ) {

    		return a.groupOrder - b.groupOrder;

    	} else if ( a.renderOrder !== b.renderOrder ) {

    		return a.renderOrder - b.renderOrder;

    	} else if ( a.material.id !== b.material.id ) {

    		return a.material.id - b.material.id;

    	} else if ( a.z !== b.z ) {

    		return a.z - b.z;

    	} else {

    		return a.id - b.id;

    	}

    }

    function reversePainterSortStable( a, b ) {

    	if ( a.groupOrder !== b.groupOrder ) {

    		return a.groupOrder - b.groupOrder;

    	} else if ( a.renderOrder !== b.renderOrder ) {

    		return a.renderOrder - b.renderOrder;

    	} else if ( a.z !== b.z ) {

    		return b.z - a.z;

    	} else {

    		return a.id - b.id;

    	}

    }


    function WebGLRenderList() {

    	const renderItems = [];
    	let renderItemsIndex = 0;

    	const opaque = [];
    	const transmissive = [];
    	const transparent = [];

    	function init() {

    		renderItemsIndex = 0;

    		opaque.length = 0;
    		transmissive.length = 0;
    		transparent.length = 0;

    	}

    	function getNextRenderItem( object, geometry, material, groupOrder, z, group ) {

    		let renderItem = renderItems[ renderItemsIndex ];

    		if ( renderItem === undefined ) {

    			renderItem = {
    				id: object.id,
    				object: object,
    				geometry: geometry,
    				material: material,
    				groupOrder: groupOrder,
    				renderOrder: object.renderOrder,
    				z: z,
    				group: group
    			};

    			renderItems[ renderItemsIndex ] = renderItem;

    		} else {

    			renderItem.id = object.id;
    			renderItem.object = object;
    			renderItem.geometry = geometry;
    			renderItem.material = material;
    			renderItem.groupOrder = groupOrder;
    			renderItem.renderOrder = object.renderOrder;
    			renderItem.z = z;
    			renderItem.group = group;

    		}

    		renderItemsIndex ++;

    		return renderItem;

    	}

    	function push( object, geometry, material, groupOrder, z, group ) {

    		const renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );

    		if ( material.transmission > 0.0 ) {

    			transmissive.push( renderItem );

    		} else if ( material.transparent === true ) {

    			transparent.push( renderItem );

    		} else {

    			opaque.push( renderItem );

    		}

    	}

    	function unshift( object, geometry, material, groupOrder, z, group ) {

    		const renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );

    		if ( material.transmission > 0.0 ) {

    			transmissive.unshift( renderItem );

    		} else if ( material.transparent === true ) {

    			transparent.unshift( renderItem );

    		} else {

    			opaque.unshift( renderItem );

    		}

    	}

    	function sort( customOpaqueSort, customTransparentSort ) {

    		if ( opaque.length > 1 ) opaque.sort( customOpaqueSort || painterSortStable );
    		if ( transmissive.length > 1 ) transmissive.sort( customTransparentSort || reversePainterSortStable );
    		if ( transparent.length > 1 ) transparent.sort( customTransparentSort || reversePainterSortStable );

    	}

    	function finish() {

    		// Clear references from inactive renderItems in the list

    		for ( let i = renderItemsIndex, il = renderItems.length; i < il; i ++ ) {

    			const renderItem = renderItems[ i ];

    			if ( renderItem.id === null ) break;

    			renderItem.id = null;
    			renderItem.object = null;
    			renderItem.geometry = null;
    			renderItem.material = null;
    			renderItem.group = null;

    		}

    	}

    	return {

    		opaque: opaque,
    		transmissive: transmissive,
    		transparent: transparent,

    		init: init,
    		push: push,
    		unshift: unshift,
    		finish: finish,

    		sort: sort
    	};

    }

    function WebGLRenderLists() {

    	let lists = new WeakMap();

    	function get( scene, renderCallDepth ) {

    		const listArray = lists.get( scene );
    		let list;

    		if ( listArray === undefined ) {

    			list = new WebGLRenderList();
    			lists.set( scene, [ list ] );

    		} else {

    			if ( renderCallDepth >= listArray.length ) {

    				list = new WebGLRenderList();
    				listArray.push( list );

    			} else {

    				list = listArray[ renderCallDepth ];

    			}

    		}

    		return list;

    	}

    	function dispose() {

    		lists = new WeakMap();

    	}

    	return {
    		get: get,
    		dispose: dispose
    	};

    }

    function UniformsCache() {

    	const lights = {};

    	return {

    		get: function ( light ) {

    			if ( lights[ light.id ] !== undefined ) {

    				return lights[ light.id ];

    			}

    			let uniforms;

    			switch ( light.type ) {

    				case 'DirectionalLight':
    					uniforms = {
    						direction: new Vector3(),
    						color: new Color()
    					};
    					break;

    				case 'SpotLight':
    					uniforms = {
    						position: new Vector3(),
    						direction: new Vector3(),
    						color: new Color(),
    						distance: 0,
    						coneCos: 0,
    						penumbraCos: 0,
    						decay: 0
    					};
    					break;

    				case 'PointLight':
    					uniforms = {
    						position: new Vector3(),
    						color: new Color(),
    						distance: 0,
    						decay: 0
    					};
    					break;

    				case 'HemisphereLight':
    					uniforms = {
    						direction: new Vector3(),
    						skyColor: new Color(),
    						groundColor: new Color()
    					};
    					break;

    				case 'RectAreaLight':
    					uniforms = {
    						color: new Color(),
    						position: new Vector3(),
    						halfWidth: new Vector3(),
    						halfHeight: new Vector3()
    					};
    					break;

    			}

    			lights[ light.id ] = uniforms;

    			return uniforms;

    		}

    	};

    }

    function ShadowUniformsCache() {

    	const lights = {};

    	return {

    		get: function ( light ) {

    			if ( lights[ light.id ] !== undefined ) {

    				return lights[ light.id ];

    			}

    			let uniforms;

    			switch ( light.type ) {

    				case 'DirectionalLight':
    					uniforms = {
    						shadowBias: 0,
    						shadowNormalBias: 0,
    						shadowRadius: 1,
    						shadowMapSize: new Vector2()
    					};
    					break;

    				case 'SpotLight':
    					uniforms = {
    						shadowBias: 0,
    						shadowNormalBias: 0,
    						shadowRadius: 1,
    						shadowMapSize: new Vector2()
    					};
    					break;

    				case 'PointLight':
    					uniforms = {
    						shadowBias: 0,
    						shadowNormalBias: 0,
    						shadowRadius: 1,
    						shadowMapSize: new Vector2(),
    						shadowCameraNear: 1,
    						shadowCameraFar: 1000
    					};
    					break;

    				// TODO (abelnation): set RectAreaLight shadow uniforms

    			}

    			lights[ light.id ] = uniforms;

    			return uniforms;

    		}

    	};

    }



    let nextVersion = 0;

    function shadowCastingAndTexturingLightsFirst( lightA, lightB ) {

    	return ( lightB.castShadow ? 2 : 0 ) - ( lightA.castShadow ? 2 : 0 ) + ( lightB.map ? 1 : 0 ) - ( lightA.map ? 1 : 0 );

    }

    function WebGLLights( extensions, capabilities ) {

    	const cache = new UniformsCache();

    	const shadowCache = ShadowUniformsCache();

    	const state = {

    		version: 0,

    		hash: {
    			directionalLength: - 1,
    			pointLength: - 1,
    			spotLength: - 1,
    			rectAreaLength: - 1,
    			hemiLength: - 1,

    			numDirectionalShadows: - 1,
    			numPointShadows: - 1,
    			numSpotShadows: - 1,
    			numSpotMaps: - 1
    		},

    		ambient: [ 0, 0, 0 ],
    		probe: [],
    		directional: [],
    		directionalShadow: [],
    		directionalShadowMap: [],
    		directionalShadowMatrix: [],
    		spot: [],
    		spotLightMap: [],
    		spotShadow: [],
    		spotShadowMap: [],
    		spotLightMatrix: [],
    		rectArea: [],
    		rectAreaLTC1: null,
    		rectAreaLTC2: null,
    		point: [],
    		pointShadow: [],
    		pointShadowMap: [],
    		pointShadowMatrix: [],
    		hemi: [],
    		numSpotLightShadowsWithMaps: 0

    	};

    	for ( let i = 0; i < 9; i ++ ) state.probe.push( new Vector3() );

    	const vector3 = new Vector3();
    	const matrix4 = new Matrix4();
    	const matrix42 = new Matrix4();

    	function setup( lights, physicallyCorrectLights ) {

    		let r = 0, g = 0, b = 0;

    		for ( let i = 0; i < 9; i ++ ) state.probe[ i ].set( 0, 0, 0 );

    		let directionalLength = 0;
    		let pointLength = 0;
    		let spotLength = 0;
    		let rectAreaLength = 0;
    		let hemiLength = 0;

    		let numDirectionalShadows = 0;
    		let numPointShadows = 0;
    		let numSpotShadows = 0;
    		let numSpotMaps = 0;
    		let numSpotShadowsWithMaps = 0;

    		// ordering : [shadow casting + map texturing, map texturing, shadow casting, none ]
    		lights.sort( shadowCastingAndTexturingLightsFirst );

    		// artist-friendly light intensity scaling factor
    		const scaleFactor = ( physicallyCorrectLights !== true ) ? Math.PI : 1;

    		for ( let i = 0, l = lights.length; i < l; i ++ ) {

    			const light = lights[ i ];

    			const color = light.color;
    			const intensity = light.intensity;
    			const distance = light.distance;

    			const shadowMap = ( light.shadow && light.shadow.map ) ? light.shadow.map.texture : null;

    			if ( light.isAmbientLight ) {

    				r += color.r * intensity * scaleFactor;
    				g += color.g * intensity * scaleFactor;
    				b += color.b * intensity * scaleFactor;

    			} else if ( light.isLightProbe ) {

    				for ( let j = 0; j < 9; j ++ ) {

    					state.probe[ j ].addScaledVector( light.sh.coefficients[ j ], intensity );

    				}

    			} else if ( light.isDirectionalLight ) {

    				const uniforms = cache.get( light );

    				uniforms.color.copy( light.color ).multiplyScalar( light.intensity * scaleFactor );

    				if ( light.castShadow ) {

    					const shadow = light.shadow;

    					const shadowUniforms = shadowCache.get( light );

    					shadowUniforms.shadowBias = shadow.bias;
    					shadowUniforms.shadowNormalBias = shadow.normalBias;
    					shadowUniforms.shadowRadius = shadow.radius;
    					shadowUniforms.shadowMapSize = shadow.mapSize;

    					state.directionalShadow[ directionalLength ] = shadowUniforms;
    					state.directionalShadowMap[ directionalLength ] = shadowMap;
    					state.directionalShadowMatrix[ directionalLength ] = light.shadow.matrix;

    					numDirectionalShadows ++;

    				}

    				state.directional[ directionalLength ] = uniforms;

    				directionalLength ++;

    			} else if ( light.isSpotLight ) {

    				const uniforms = cache.get( light );

    				uniforms.position.setFromMatrixPosition( light.matrixWorld );

    				uniforms.color.copy( color ).multiplyScalar( intensity * scaleFactor );
    				uniforms.distance = distance;

    				uniforms.coneCos = Math.cos( light.angle );
    				uniforms.penumbraCos = Math.cos( light.angle * ( 1 - light.penumbra ) );
    				uniforms.decay = light.decay;

    				state.spot[ spotLength ] = uniforms;

    				const shadow = light.shadow;

    				if ( light.map ) {

    					state.spotLightMap[ numSpotMaps ] = light.map;
    					numSpotMaps ++;

    					// make sure the lightMatrix is up to date
    					// TODO : do it if required only
    					shadow.updateMatrices( light );

    					if ( light.castShadow ) numSpotShadowsWithMaps ++;

    				}

    				state.spotLightMatrix[ spotLength ] = shadow.matrix;

    				if ( light.castShadow ) {

    					const shadowUniforms = shadowCache.get( light );

    					shadowUniforms.shadowBias = shadow.bias;
    					shadowUniforms.shadowNormalBias = shadow.normalBias;
    					shadowUniforms.shadowRadius = shadow.radius;
    					shadowUniforms.shadowMapSize = shadow.mapSize;

    					state.spotShadow[ spotLength ] = shadowUniforms;
    					state.spotShadowMap[ spotLength ] = shadowMap;

    					numSpotShadows ++;

    				}

    				spotLength ++;

    			} else if ( light.isRectAreaLight ) {

    				const uniforms = cache.get( light );

    				// (a) intensity is the total visible light emitted
    				//uniforms.color.copy( color ).multiplyScalar( intensity / ( light.width * light.height * Math.PI ) );

    				// (b) intensity is the brightness of the light
    				uniforms.color.copy( color ).multiplyScalar( intensity );

    				uniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );
    				uniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );

    				state.rectArea[ rectAreaLength ] = uniforms;

    				rectAreaLength ++;

    			} else if ( light.isPointLight ) {

    				const uniforms = cache.get( light );

    				uniforms.color.copy( light.color ).multiplyScalar( light.intensity * scaleFactor );
    				uniforms.distance = light.distance;
    				uniforms.decay = light.decay;

    				if ( light.castShadow ) {

    					const shadow = light.shadow;

    					const shadowUniforms = shadowCache.get( light );

    					shadowUniforms.shadowBias = shadow.bias;
    					shadowUniforms.shadowNormalBias = shadow.normalBias;
    					shadowUniforms.shadowRadius = shadow.radius;
    					shadowUniforms.shadowMapSize = shadow.mapSize;
    					shadowUniforms.shadowCameraNear = shadow.camera.near;
    					shadowUniforms.shadowCameraFar = shadow.camera.far;

    					state.pointShadow[ pointLength ] = shadowUniforms;
    					state.pointShadowMap[ pointLength ] = shadowMap;
    					state.pointShadowMatrix[ pointLength ] = light.shadow.matrix;

    					numPointShadows ++;

    				}

    				state.point[ pointLength ] = uniforms;

    				pointLength ++;

    			} else if ( light.isHemisphereLight ) {

    				const uniforms = cache.get( light );

    				uniforms.skyColor.copy( light.color ).multiplyScalar( intensity * scaleFactor );
    				uniforms.groundColor.copy( light.groundColor ).multiplyScalar( intensity * scaleFactor );

    				state.hemi[ hemiLength ] = uniforms;

    				hemiLength ++;

    			}

    		}

    		if ( rectAreaLength > 0 ) {

    			if ( capabilities.isWebGL2 ) {

    				// WebGL 2

    				state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
    				state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;

    			} else {

    				// WebGL 1

    				if ( extensions.has( 'OES_texture_float_linear' ) === true ) {

    					state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
    					state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;

    				} else if ( extensions.has( 'OES_texture_half_float_linear' ) === true ) {

    					state.rectAreaLTC1 = UniformsLib.LTC_HALF_1;
    					state.rectAreaLTC2 = UniformsLib.LTC_HALF_2;

    				} else {

    					console.error( 'THREE.WebGLRenderer: Unable to use RectAreaLight. Missing WebGL extensions.' );

    				}

    			}

    		}

    		state.ambient[ 0 ] = r;
    		state.ambient[ 1 ] = g;
    		state.ambient[ 2 ] = b;

    		const hash = state.hash;

    		if ( hash.directionalLength !== directionalLength ||
    			hash.pointLength !== pointLength ||
    			hash.spotLength !== spotLength ||
    			hash.rectAreaLength !== rectAreaLength ||
    			hash.hemiLength !== hemiLength ||
    			hash.numDirectionalShadows !== numDirectionalShadows ||
    			hash.numPointShadows !== numPointShadows ||
    			hash.numSpotShadows !== numSpotShadows ||
    			hash.numSpotMaps !== numSpotMaps ) {

    			state.directional.length = directionalLength;
    			state.spot.length = spotLength;
    			state.rectArea.length = rectAreaLength;
    			state.point.length = pointLength;
    			state.hemi.length = hemiLength;

    			state.directionalShadow.length = numDirectionalShadows;
    			state.directionalShadowMap.length = numDirectionalShadows;
    			state.pointShadow.length = numPointShadows;
    			state.pointShadowMap.length = numPointShadows;
    			state.spotShadow.length = numSpotShadows;
    			state.spotShadowMap.length = numSpotShadows;
    			state.directionalShadowMatrix.length = numDirectionalShadows;
    			state.pointShadowMatrix.length = numPointShadows;
    			state.spotLightMatrix.length = numSpotShadows + numSpotMaps - numSpotShadowsWithMaps;
    			state.spotLightMap.length = numSpotMaps;
    			state.numSpotLightShadowsWithMaps = numSpotShadowsWithMaps;

    			hash.directionalLength = directionalLength;
    			hash.pointLength = pointLength;
    			hash.spotLength = spotLength;
    			hash.rectAreaLength = rectAreaLength;
    			hash.hemiLength = hemiLength;

    			hash.numDirectionalShadows = numDirectionalShadows;
    			hash.numPointShadows = numPointShadows;
    			hash.numSpotShadows = numSpotShadows;
    			hash.numSpotMaps = numSpotMaps;

    			state.version = nextVersion ++;

    		}

    	}

    	function setupView( lights, camera ) {

    		let directionalLength = 0;
    		let pointLength = 0;
    		let spotLength = 0;
    		let rectAreaLength = 0;
    		let hemiLength = 0;

    		const viewMatrix = camera.matrixWorldInverse;

    		for ( let i = 0, l = lights.length; i < l; i ++ ) {

    			const light = lights[ i ];

    			if ( light.isDirectionalLight ) {

    				const uniforms = state.directional[ directionalLength ];

    				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
    				vector3.setFromMatrixPosition( light.target.matrixWorld );
    				uniforms.direction.sub( vector3 );
    				uniforms.direction.transformDirection( viewMatrix );

    				directionalLength ++;

    			} else if ( light.isSpotLight ) {

    				const uniforms = state.spot[ spotLength ];

    				uniforms.position.setFromMatrixPosition( light.matrixWorld );
    				uniforms.position.applyMatrix4( viewMatrix );

    				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
    				vector3.setFromMatrixPosition( light.target.matrixWorld );
    				uniforms.direction.sub( vector3 );
    				uniforms.direction.transformDirection( viewMatrix );

    				spotLength ++;

    			} else if ( light.isRectAreaLight ) {

    				const uniforms = state.rectArea[ rectAreaLength ];

    				uniforms.position.setFromMatrixPosition( light.matrixWorld );
    				uniforms.position.applyMatrix4( viewMatrix );

    				// extract local rotation of light to derive width/height half vectors
    				matrix42.identity();
    				matrix4.copy( light.matrixWorld );
    				matrix4.premultiply( viewMatrix );
    				matrix42.extractRotation( matrix4 );

    				uniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );
    				uniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );

    				uniforms.halfWidth.applyMatrix4( matrix42 );
    				uniforms.halfHeight.applyMatrix4( matrix42 );

    				rectAreaLength ++;

    			} else if ( light.isPointLight ) {

    				const uniforms = state.point[ pointLength ];

    				uniforms.position.setFromMatrixPosition( light.matrixWorld );
    				uniforms.position.applyMatrix4( viewMatrix );

    				pointLength ++;

    			} else if ( light.isHemisphereLight ) {

    				const uniforms = state.hemi[ hemiLength ];

    				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
    				uniforms.direction.transformDirection( viewMatrix );

    				hemiLength ++;

    			}

    		}

    	}

    	return {
    		setup: setup,
    		setupView: setupView,
    		state: state
    	};

    }

    function WebGLRenderState( extensions, capabilities ) {

    	const lights = new WebGLLights( extensions, capabilities );

    	const lightsArray = [];
    	const shadowsArray = [];

    	function init() {

    		lightsArray.length = 0;
    		shadowsArray.length = 0;

    	}

    	function pushLight( light ) {

    		lightsArray.push( light );

    	}

    	function pushShadow( shadowLight ) {

    		shadowsArray.push( shadowLight );

    	}

    	function setupLights( physicallyCorrectLights ) {

    		lights.setup( lightsArray, physicallyCorrectLights );

    	}

    	function setupLightsView( camera ) {

    		lights.setupView( lightsArray, camera );

    	}

    	const state = {
    		lightsArray: lightsArray,
    		shadowsArray: shadowsArray,

    		lights: lights
    	};

    	return {
    		init: init,
    		state: state,
    		setupLights: setupLights,
    		setupLightsView: setupLightsView,

    		pushLight: pushLight,
    		pushShadow: pushShadow
    	};

    }

    function WebGLRenderStates( extensions, capabilities ) {

    	let renderStates = new WeakMap();

    	function get( scene, renderCallDepth = 0 ) {

    		const renderStateArray = renderStates.get( scene );
    		let renderState;

    		if ( renderStateArray === undefined ) {

    			renderState = new WebGLRenderState( extensions, capabilities );
    			renderStates.set( scene, [ renderState ] );

    		} else {

    			if ( renderCallDepth >= renderStateArray.length ) {

    				renderState = new WebGLRenderState( extensions, capabilities );
    				renderStateArray.push( renderState );

    			} else {

    				renderState = renderStateArray[ renderCallDepth ];

    			}

    		}

    		return renderState;

    	}

    	function dispose() {

    		renderStates = new WeakMap();

    	}

    	return {
    		get: get,
    		dispose: dispose
    	};

    }

    class MeshDepthMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isMeshDepthMaterial = true;

    		this.type = 'MeshDepthMaterial';

    		this.depthPacking = BasicDepthPacking;

    		this.map = null;

    		this.alphaMap = null;

    		this.displacementMap = null;
    		this.displacementScale = 1;
    		this.displacementBias = 0;

    		this.wireframe = false;
    		this.wireframeLinewidth = 1;

    		this.setValues( parameters );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.depthPacking = source.depthPacking;

    		this.map = source.map;

    		this.alphaMap = source.alphaMap;

    		this.displacementMap = source.displacementMap;
    		this.displacementScale = source.displacementScale;
    		this.displacementBias = source.displacementBias;

    		this.wireframe = source.wireframe;
    		this.wireframeLinewidth = source.wireframeLinewidth;

    		return this;

    	}

    }

    class MeshDistanceMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isMeshDistanceMaterial = true;

    		this.type = 'MeshDistanceMaterial';

    		this.referencePosition = new Vector3();
    		this.nearDistance = 1;
    		this.farDistance = 1000;

    		this.map = null;

    		this.alphaMap = null;

    		this.displacementMap = null;
    		this.displacementScale = 1;
    		this.displacementBias = 0;

    		this.setValues( parameters );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.referencePosition.copy( source.referencePosition );
    		this.nearDistance = source.nearDistance;
    		this.farDistance = source.farDistance;

    		this.map = source.map;

    		this.alphaMap = source.alphaMap;

    		this.displacementMap = source.displacementMap;
    		this.displacementScale = source.displacementScale;
    		this.displacementBias = source.displacementBias;

    		return this;

    	}

    }

    const vertex = "void main() {\n\tgl_Position = vec4( position, 1.0 );\n}";

    const fragment = "uniform sampler2D shadow_pass;\nuniform vec2 resolution;\nuniform float radius;\n#include <packing>\nvoid main() {\n\tconst float samples = float( VSM_SAMPLES );\n\tfloat mean = 0.0;\n\tfloat squared_mean = 0.0;\n\tfloat uvStride = samples <= 1.0 ? 0.0 : 2.0 / ( samples - 1.0 );\n\tfloat uvStart = samples <= 1.0 ? 0.0 : - 1.0;\n\tfor ( float i = 0.0; i < samples; i ++ ) {\n\t\tfloat uvOffset = uvStart + i * uvStride;\n\t\t#ifdef HORIZONTAL_PASS\n\t\t\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( uvOffset, 0.0 ) * radius ) / resolution ) );\n\t\t\tmean += distribution.x;\n\t\t\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\n\t\t#else\n\t\t\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, uvOffset ) * radius ) / resolution ) );\n\t\t\tmean += depth;\n\t\t\tsquared_mean += depth * depth;\n\t\t#endif\n\t}\n\tmean = mean / samples;\n\tsquared_mean = squared_mean / samples;\n\tfloat std_dev = sqrt( squared_mean - mean * mean );\n\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\n}";

    function WebGLShadowMap( _renderer, _objects, _capabilities ) {

    	let _frustum = new Frustum();

    	const _shadowMapSize = new Vector2(),
    		_viewportSize = new Vector2(),

    		_viewport = new Vector4(),

    		_depthMaterial = new MeshDepthMaterial( { depthPacking: RGBADepthPacking } ),
    		_distanceMaterial = new MeshDistanceMaterial(),

    		_materialCache = {},

    		_maxTextureSize = _capabilities.maxTextureSize;

    	const shadowSide = { 0: BackSide, 1: FrontSide, 2: DoubleSide };

    	const shadowMaterialVertical = new ShaderMaterial( {
    		defines: {
    			VSM_SAMPLES: 8
    		},
    		uniforms: {
    			shadow_pass: { value: null },
    			resolution: { value: new Vector2() },
    			radius: { value: 4.0 }
    		},

    		vertexShader: vertex,
    		fragmentShader: fragment

    	} );

    	const shadowMaterialHorizontal = shadowMaterialVertical.clone();
    	shadowMaterialHorizontal.defines.HORIZONTAL_PASS = 1;

    	const fullScreenTri = new BufferGeometry();
    	fullScreenTri.setAttribute(
    		'position',
    		new BufferAttribute(
    			new Float32Array( [ - 1, - 1, 0.5, 3, - 1, 0.5, - 1, 3, 0.5 ] ),
    			3
    		)
    	);

    	const fullScreenMesh = new Mesh( fullScreenTri, shadowMaterialVertical );

    	const scope = this;

    	this.enabled = false;

    	this.autoUpdate = true;
    	this.needsUpdate = false;

    	this.type = PCFShadowMap;

    	this.render = function ( lights, scene, camera ) {

    		if ( scope.enabled === false ) return;
    		if ( scope.autoUpdate === false && scope.needsUpdate === false ) return;

    		if ( lights.length === 0 ) return;

    		const currentRenderTarget = _renderer.getRenderTarget();
    		const activeCubeFace = _renderer.getActiveCubeFace();
    		const activeMipmapLevel = _renderer.getActiveMipmapLevel();

    		const _state = _renderer.state;

    		// Set GL state for depth map.
    		_state.setBlending( NoBlending );
    		_state.buffers.color.setClear( 1, 1, 1, 1 );
    		_state.buffers.depth.setTest( true );
    		_state.setScissorTest( false );

    		// render depth map

    		for ( let i = 0, il = lights.length; i < il; i ++ ) {

    			const light = lights[ i ];
    			const shadow = light.shadow;

    			if ( shadow === undefined ) {

    				console.warn( 'THREE.WebGLShadowMap:', light, 'has no shadow.' );
    				continue;

    			}

    			if ( shadow.autoUpdate === false && shadow.needsUpdate === false ) continue;

    			_shadowMapSize.copy( shadow.mapSize );

    			const shadowFrameExtents = shadow.getFrameExtents();

    			_shadowMapSize.multiply( shadowFrameExtents );

    			_viewportSize.copy( shadow.mapSize );

    			if ( _shadowMapSize.x > _maxTextureSize || _shadowMapSize.y > _maxTextureSize ) {

    				if ( _shadowMapSize.x > _maxTextureSize ) {

    					_viewportSize.x = Math.floor( _maxTextureSize / shadowFrameExtents.x );
    					_shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;
    					shadow.mapSize.x = _viewportSize.x;

    				}

    				if ( _shadowMapSize.y > _maxTextureSize ) {

    					_viewportSize.y = Math.floor( _maxTextureSize / shadowFrameExtents.y );
    					_shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;
    					shadow.mapSize.y = _viewportSize.y;

    				}

    			}

    			if ( shadow.map === null ) {

    				const pars = ( this.type !== VSMShadowMap ) ? { minFilter: NearestFilter, magFilter: NearestFilter } : {};

    				shadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );
    				shadow.map.texture.name = light.name + '.shadowMap';

    				shadow.camera.updateProjectionMatrix();

    			}

    			_renderer.setRenderTarget( shadow.map );
    			_renderer.clear();

    			const viewportCount = shadow.getViewportCount();

    			for ( let vp = 0; vp < viewportCount; vp ++ ) {

    				const viewport = shadow.getViewport( vp );

    				_viewport.set(
    					_viewportSize.x * viewport.x,
    					_viewportSize.y * viewport.y,
    					_viewportSize.x * viewport.z,
    					_viewportSize.y * viewport.w
    				);

    				_state.viewport( _viewport );

    				shadow.updateMatrices( light, vp );

    				_frustum = shadow.getFrustum();

    				renderObject( scene, camera, shadow.camera, light, this.type );

    			}

    			// do blur pass for VSM

    			if ( shadow.isPointLightShadow !== true && this.type === VSMShadowMap ) {

    				VSMPass( shadow, camera );

    			}

    			shadow.needsUpdate = false;

    		}

    		scope.needsUpdate = false;

    		_renderer.setRenderTarget( currentRenderTarget, activeCubeFace, activeMipmapLevel );

    	};

    	function VSMPass( shadow, camera ) {

    		const geometry = _objects.update( fullScreenMesh );

    		if ( shadowMaterialVertical.defines.VSM_SAMPLES !== shadow.blurSamples ) {

    			shadowMaterialVertical.defines.VSM_SAMPLES = shadow.blurSamples;
    			shadowMaterialHorizontal.defines.VSM_SAMPLES = shadow.blurSamples;

    			shadowMaterialVertical.needsUpdate = true;
    			shadowMaterialHorizontal.needsUpdate = true;

    		}

    		if ( shadow.mapPass === null ) {

    			shadow.mapPass = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y );

    		}

    		// vertical pass

    		shadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;
    		shadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;
    		shadowMaterialVertical.uniforms.radius.value = shadow.radius;
    		_renderer.setRenderTarget( shadow.mapPass );
    		_renderer.clear();
    		_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null );

    		// horizontal pass

    		shadowMaterialHorizontal.uniforms.shadow_pass.value = shadow.mapPass.texture;
    		shadowMaterialHorizontal.uniforms.resolution.value = shadow.mapSize;
    		shadowMaterialHorizontal.uniforms.radius.value = shadow.radius;
    		_renderer.setRenderTarget( shadow.map );
    		_renderer.clear();
    		_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialHorizontal, fullScreenMesh, null );

    	}

    	function getDepthMaterial( object, material, light, shadowCameraNear, shadowCameraFar, type ) {

    		let result = null;

    		const customMaterial = ( light.isPointLight === true ) ? object.customDistanceMaterial : object.customDepthMaterial;

    		if ( customMaterial !== undefined ) {

    			result = customMaterial;

    		} else {

    			result = ( light.isPointLight === true ) ? _distanceMaterial : _depthMaterial;

    		}

    		if ( ( _renderer.localClippingEnabled && material.clipShadows === true && Array.isArray( material.clippingPlanes ) && material.clippingPlanes.length !== 0 ) ||
    			( material.displacementMap && material.displacementScale !== 0 ) ||
    			( material.alphaMap && material.alphaTest > 0 ) ) {

    			// in this case we need a unique material instance reflecting the
    			// appropriate state

    			const keyA = result.uuid, keyB = material.uuid;

    			let materialsForVariant = _materialCache[ keyA ];

    			if ( materialsForVariant === undefined ) {

    				materialsForVariant = {};
    				_materialCache[ keyA ] = materialsForVariant;

    			}

    			let cachedMaterial = materialsForVariant[ keyB ];

    			if ( cachedMaterial === undefined ) {

    				cachedMaterial = result.clone();
    				materialsForVariant[ keyB ] = cachedMaterial;

    			}

    			result = cachedMaterial;

    		}

    		result.visible = material.visible;
    		result.wireframe = material.wireframe;

    		if ( type === VSMShadowMap ) {

    			result.side = ( material.shadowSide !== null ) ? material.shadowSide : material.side;

    		} else {

    			result.side = ( material.shadowSide !== null ) ? material.shadowSide : shadowSide[ material.side ];

    		}

    		result.alphaMap = material.alphaMap;
    		result.alphaTest = material.alphaTest;

    		result.clipShadows = material.clipShadows;
    		result.clippingPlanes = material.clippingPlanes;
    		result.clipIntersection = material.clipIntersection;

    		result.displacementMap = material.displacementMap;
    		result.displacementScale = material.displacementScale;
    		result.displacementBias = material.displacementBias;

    		result.wireframeLinewidth = material.wireframeLinewidth;
    		result.linewidth = material.linewidth;

    		if ( light.isPointLight === true && result.isMeshDistanceMaterial === true ) {

    			result.referencePosition.setFromMatrixPosition( light.matrixWorld );
    			result.nearDistance = shadowCameraNear;
    			result.farDistance = shadowCameraFar;

    		}

    		return result;

    	}

    	function renderObject( object, camera, shadowCamera, light, type ) {

    		if ( object.visible === false ) return;

    		const visible = object.layers.test( camera.layers );

    		if ( visible && ( object.isMesh || object.isLine || object.isPoints ) ) {

    			if ( ( object.castShadow || ( object.receiveShadow && type === VSMShadowMap ) ) && ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) ) {

    				object.modelViewMatrix.multiplyMatrices( shadowCamera.matrixWorldInverse, object.matrixWorld );

    				const geometry = _objects.update( object );
    				const material = object.material;

    				if ( Array.isArray( material ) ) {

    					const groups = geometry.groups;

    					for ( let k = 0, kl = groups.length; k < kl; k ++ ) {

    						const group = groups[ k ];
    						const groupMaterial = material[ group.materialIndex ];

    						if ( groupMaterial && groupMaterial.visible ) {

    							const depthMaterial = getDepthMaterial( object, groupMaterial, light, shadowCamera.near, shadowCamera.far, type );

    							_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, group );

    						}

    					}

    				} else if ( material.visible ) {

    					const depthMaterial = getDepthMaterial( object, material, light, shadowCamera.near, shadowCamera.far, type );

    					_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, null );

    				}

    			}

    		}

    		const children = object.children;

    		for ( let i = 0, l = children.length; i < l; i ++ ) {

    			renderObject( children[ i ], camera, shadowCamera, light, type );

    		}

    	}

    }

    function WebGLState( gl, extensions, capabilities ) {

    	const isWebGL2 = capabilities.isWebGL2;

    	function ColorBuffer() {

    		let locked = false;

    		const color = new Vector4();
    		let currentColorMask = null;
    		const currentColorClear = new Vector4( 0, 0, 0, 0 );

    		return {

    			setMask: function ( colorMask ) {

    				if ( currentColorMask !== colorMask && ! locked ) {

    					gl.colorMask( colorMask, colorMask, colorMask, colorMask );
    					currentColorMask = colorMask;

    				}

    			},

    			setLocked: function ( lock ) {

    				locked = lock;

    			},

    			setClear: function ( r, g, b, a, premultipliedAlpha ) {

    				if ( premultipliedAlpha === true ) {

    					r *= a; g *= a; b *= a;

    				}

    				color.set( r, g, b, a );

    				if ( currentColorClear.equals( color ) === false ) {

    					gl.clearColor( r, g, b, a );
    					currentColorClear.copy( color );

    				}

    			},

    			reset: function () {

    				locked = false;

    				currentColorMask = null;
    				currentColorClear.set( - 1, 0, 0, 0 ); // set to invalid state

    			}

    		};

    	}

    	function DepthBuffer() {

    		let locked = false;

    		let currentDepthMask = null;
    		let currentDepthFunc = null;
    		let currentDepthClear = null;

    		return {

    			setTest: function ( depthTest ) {

    				if ( depthTest ) {

    					enable( 2929 );

    				} else {

    					disable( 2929 );

    				}

    			},

    			setMask: function ( depthMask ) {

    				if ( currentDepthMask !== depthMask && ! locked ) {

    					gl.depthMask( depthMask );
    					currentDepthMask = depthMask;

    				}

    			},

    			setFunc: function ( depthFunc ) {

    				if ( currentDepthFunc !== depthFunc ) {

    					switch ( depthFunc ) {

    						case NeverDepth:

    							gl.depthFunc( 512 );
    							break;

    						case AlwaysDepth:

    							gl.depthFunc( 519 );
    							break;

    						case LessDepth:

    							gl.depthFunc( 513 );
    							break;

    						case LessEqualDepth:

    							gl.depthFunc( 515 );
    							break;

    						case EqualDepth:

    							gl.depthFunc( 514 );
    							break;

    						case GreaterEqualDepth:

    							gl.depthFunc( 518 );
    							break;

    						case GreaterDepth:

    							gl.depthFunc( 516 );
    							break;

    						case NotEqualDepth:

    							gl.depthFunc( 517 );
    							break;

    						default:

    							gl.depthFunc( 515 );

    					}

    					currentDepthFunc = depthFunc;

    				}

    			},

    			setLocked: function ( lock ) {

    				locked = lock;

    			},

    			setClear: function ( depth ) {

    				if ( currentDepthClear !== depth ) {

    					gl.clearDepth( depth );
    					currentDepthClear = depth;

    				}

    			},

    			reset: function () {

    				locked = false;

    				currentDepthMask = null;
    				currentDepthFunc = null;
    				currentDepthClear = null;

    			}

    		};

    	}

    	function StencilBuffer() {

    		let locked = false;

    		let currentStencilMask = null;
    		let currentStencilFunc = null;
    		let currentStencilRef = null;
    		let currentStencilFuncMask = null;
    		let currentStencilFail = null;
    		let currentStencilZFail = null;
    		let currentStencilZPass = null;
    		let currentStencilClear = null;

    		return {

    			setTest: function ( stencilTest ) {

    				if ( ! locked ) {

    					if ( stencilTest ) {

    						enable( 2960 );

    					} else {

    						disable( 2960 );

    					}

    				}

    			},

    			setMask: function ( stencilMask ) {

    				if ( currentStencilMask !== stencilMask && ! locked ) {

    					gl.stencilMask( stencilMask );
    					currentStencilMask = stencilMask;

    				}

    			},

    			setFunc: function ( stencilFunc, stencilRef, stencilMask ) {

    				if ( currentStencilFunc !== stencilFunc ||
    				     currentStencilRef !== stencilRef ||
    				     currentStencilFuncMask !== stencilMask ) {

    					gl.stencilFunc( stencilFunc, stencilRef, stencilMask );

    					currentStencilFunc = stencilFunc;
    					currentStencilRef = stencilRef;
    					currentStencilFuncMask = stencilMask;

    				}

    			},

    			setOp: function ( stencilFail, stencilZFail, stencilZPass ) {

    				if ( currentStencilFail !== stencilFail ||
    				     currentStencilZFail !== stencilZFail ||
    				     currentStencilZPass !== stencilZPass ) {

    					gl.stencilOp( stencilFail, stencilZFail, stencilZPass );

    					currentStencilFail = stencilFail;
    					currentStencilZFail = stencilZFail;
    					currentStencilZPass = stencilZPass;

    				}

    			},

    			setLocked: function ( lock ) {

    				locked = lock;

    			},

    			setClear: function ( stencil ) {

    				if ( currentStencilClear !== stencil ) {

    					gl.clearStencil( stencil );
    					currentStencilClear = stencil;

    				}

    			},

    			reset: function () {

    				locked = false;

    				currentStencilMask = null;
    				currentStencilFunc = null;
    				currentStencilRef = null;
    				currentStencilFuncMask = null;
    				currentStencilFail = null;
    				currentStencilZFail = null;
    				currentStencilZPass = null;
    				currentStencilClear = null;

    			}

    		};

    	}

    	//

    	const colorBuffer = new ColorBuffer();
    	const depthBuffer = new DepthBuffer();
    	const stencilBuffer = new StencilBuffer();

    	const uboBindings = new WeakMap();
    	const uboProgamMap = new WeakMap();

    	let enabledCapabilities = {};

    	let currentBoundFramebuffers = {};
    	let currentDrawbuffers = new WeakMap();
    	let defaultDrawbuffers = [];

    	let currentProgram = null;

    	let currentBlendingEnabled = false;
    	let currentBlending = null;
    	let currentBlendEquation = null;
    	let currentBlendSrc = null;
    	let currentBlendDst = null;
    	let currentBlendEquationAlpha = null;
    	let currentBlendSrcAlpha = null;
    	let currentBlendDstAlpha = null;
    	let currentPremultipledAlpha = false;

    	let currentFlipSided = null;
    	let currentCullFace = null;

    	let currentLineWidth = null;

    	let currentPolygonOffsetFactor = null;
    	let currentPolygonOffsetUnits = null;

    	const maxTextures = gl.getParameter( 35661 );

    	let lineWidthAvailable = false;
    	let version = 0;
    	const glVersion = gl.getParameter( 7938 );

    	if ( glVersion.indexOf( 'WebGL' ) !== - 1 ) {

    		version = parseFloat( /^WebGL (\d)/.exec( glVersion )[ 1 ] );
    		lineWidthAvailable = ( version >= 1.0 );

    	} else if ( glVersion.indexOf( 'OpenGL ES' ) !== - 1 ) {

    		version = parseFloat( /^OpenGL ES (\d)/.exec( glVersion )[ 1 ] );
    		lineWidthAvailable = ( version >= 2.0 );

    	}

    	let currentTextureSlot = null;
    	let currentBoundTextures = {};

    	const scissorParam = gl.getParameter( 3088 );
    	const viewportParam = gl.getParameter( 2978 );

    	const currentScissor = new Vector4().fromArray( scissorParam );
    	const currentViewport = new Vector4().fromArray( viewportParam );

    	function createTexture( type, target, count ) {

    		const data = new Uint8Array( 4 ); // 4 is required to match default unpack alignment of 4.
    		const texture = gl.createTexture();

    		gl.bindTexture( type, texture );
    		gl.texParameteri( type, 10241, 9728 );
    		gl.texParameteri( type, 10240, 9728 );

    		for ( let i = 0; i < count; i ++ ) {

    			gl.texImage2D( target + i, 0, 6408, 1, 1, 0, 6408, 5121, data );

    		}

    		return texture;

    	}

    	const emptyTextures = {};
    	emptyTextures[ 3553 ] = createTexture( 3553, 3553, 1 );
    	emptyTextures[ 34067 ] = createTexture( 34067, 34069, 6 );

    	// init

    	colorBuffer.setClear( 0, 0, 0, 1 );
    	depthBuffer.setClear( 1 );
    	stencilBuffer.setClear( 0 );

    	enable( 2929 );
    	depthBuffer.setFunc( LessEqualDepth );

    	setFlipSided( false );
    	setCullFace( CullFaceBack );
    	enable( 2884 );

    	setBlending( NoBlending );

    	//

    	function enable( id ) {

    		if ( enabledCapabilities[ id ] !== true ) {

    			gl.enable( id );
    			enabledCapabilities[ id ] = true;

    		}

    	}

    	function disable( id ) {

    		if ( enabledCapabilities[ id ] !== false ) {

    			gl.disable( id );
    			enabledCapabilities[ id ] = false;

    		}

    	}

    	function bindFramebuffer( target, framebuffer ) {

    		if ( currentBoundFramebuffers[ target ] !== framebuffer ) {

    			gl.bindFramebuffer( target, framebuffer );

    			currentBoundFramebuffers[ target ] = framebuffer;

    			if ( isWebGL2 ) {

    				// 36009 is equivalent to 36160

    				if ( target === 36009 ) {

    					currentBoundFramebuffers[ 36160 ] = framebuffer;

    				}

    				if ( target === 36160 ) {

    					currentBoundFramebuffers[ 36009 ] = framebuffer;

    				}

    			}

    			return true;

    		}

    		return false;

    	}

    	function drawBuffers( renderTarget, framebuffer ) {

    		let drawBuffers = defaultDrawbuffers;

    		let needsUpdate = false;

    		if ( renderTarget ) {

    			drawBuffers = currentDrawbuffers.get( framebuffer );

    			if ( drawBuffers === undefined ) {

    				drawBuffers = [];
    				currentDrawbuffers.set( framebuffer, drawBuffers );

    			}

    			if ( renderTarget.isWebGLMultipleRenderTargets ) {

    				const textures = renderTarget.texture;

    				if ( drawBuffers.length !== textures.length || drawBuffers[ 0 ] !== 36064 ) {

    					for ( let i = 0, il = textures.length; i < il; i ++ ) {

    						drawBuffers[ i ] = 36064 + i;

    					}

    					drawBuffers.length = textures.length;

    					needsUpdate = true;

    				}

    			} else {

    				if ( drawBuffers[ 0 ] !== 36064 ) {

    					drawBuffers[ 0 ] = 36064;

    					needsUpdate = true;

    				}

    			}

    		} else {

    			if ( drawBuffers[ 0 ] !== 1029 ) {

    				drawBuffers[ 0 ] = 1029;

    				needsUpdate = true;

    			}

    		}

    		if ( needsUpdate ) {

    			if ( capabilities.isWebGL2 ) {

    				gl.drawBuffers( drawBuffers );

    			} else {

    				extensions.get( 'WEBGL_draw_buffers' ).drawBuffersWEBGL( drawBuffers );

    			}

    		}


    	}

    	function useProgram( program ) {

    		if ( currentProgram !== program ) {

    			gl.useProgram( program );

    			currentProgram = program;

    			return true;

    		}

    		return false;

    	}

    	const equationToGL = {
    		[ AddEquation ]: 32774,
    		[ SubtractEquation ]: 32778,
    		[ ReverseSubtractEquation ]: 32779
    	};

    	if ( isWebGL2 ) {

    		equationToGL[ MinEquation ] = 32775;
    		equationToGL[ MaxEquation ] = 32776;

    	} else {

    		const extension = extensions.get( 'EXT_blend_minmax' );

    		if ( extension !== null ) {

    			equationToGL[ MinEquation ] = extension.MIN_EXT;
    			equationToGL[ MaxEquation ] = extension.MAX_EXT;

    		}

    	}

    	const factorToGL = {
    		[ ZeroFactor ]: 0,
    		[ OneFactor ]: 1,
    		[ SrcColorFactor ]: 768,
    		[ SrcAlphaFactor ]: 770,
    		[ SrcAlphaSaturateFactor ]: 776,
    		[ DstColorFactor ]: 774,
    		[ DstAlphaFactor ]: 772,
    		[ OneMinusSrcColorFactor ]: 769,
    		[ OneMinusSrcAlphaFactor ]: 771,
    		[ OneMinusDstColorFactor ]: 775,
    		[ OneMinusDstAlphaFactor ]: 773
    	};

    	function setBlending( blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha ) {

    		if ( blending === NoBlending ) {

    			if ( currentBlendingEnabled === true ) {

    				disable( 3042 );
    				currentBlendingEnabled = false;

    			}

    			return;

    		}

    		if ( currentBlendingEnabled === false ) {

    			enable( 3042 );
    			currentBlendingEnabled = true;

    		}

    		if ( blending !== CustomBlending ) {

    			if ( blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha ) {

    				if ( currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation ) {

    					gl.blendEquation( 32774 );

    					currentBlendEquation = AddEquation;
    					currentBlendEquationAlpha = AddEquation;

    				}

    				if ( premultipliedAlpha ) {

    					switch ( blending ) {

    						case NormalBlending:
    							gl.blendFuncSeparate( 1, 771, 1, 771 );
    							break;

    						case AdditiveBlending:
    							gl.blendFunc( 1, 1 );
    							break;

    						case SubtractiveBlending:
    							gl.blendFuncSeparate( 0, 769, 0, 1 );
    							break;

    						case MultiplyBlending:
    							gl.blendFuncSeparate( 0, 768, 0, 770 );
    							break;

    						default:
    							console.error( 'THREE.WebGLState: Invalid blending: ', blending );
    							break;

    					}

    				} else {

    					switch ( blending ) {

    						case NormalBlending:
    							gl.blendFuncSeparate( 770, 771, 1, 771 );
    							break;

    						case AdditiveBlending:
    							gl.blendFunc( 770, 1 );
    							break;

    						case SubtractiveBlending:
    							gl.blendFuncSeparate( 0, 769, 0, 1 );
    							break;

    						case MultiplyBlending:
    							gl.blendFunc( 0, 768 );
    							break;

    						default:
    							console.error( 'THREE.WebGLState: Invalid blending: ', blending );
    							break;

    					}

    				}

    				currentBlendSrc = null;
    				currentBlendDst = null;
    				currentBlendSrcAlpha = null;
    				currentBlendDstAlpha = null;

    				currentBlending = blending;
    				currentPremultipledAlpha = premultipliedAlpha;

    			}

    			return;

    		}

    		// custom blending

    		blendEquationAlpha = blendEquationAlpha || blendEquation;
    		blendSrcAlpha = blendSrcAlpha || blendSrc;
    		blendDstAlpha = blendDstAlpha || blendDst;

    		if ( blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha ) {

    			gl.blendEquationSeparate( equationToGL[ blendEquation ], equationToGL[ blendEquationAlpha ] );

    			currentBlendEquation = blendEquation;
    			currentBlendEquationAlpha = blendEquationAlpha;

    		}

    		if ( blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha ) {

    			gl.blendFuncSeparate( factorToGL[ blendSrc ], factorToGL[ blendDst ], factorToGL[ blendSrcAlpha ], factorToGL[ blendDstAlpha ] );

    			currentBlendSrc = blendSrc;
    			currentBlendDst = blendDst;
    			currentBlendSrcAlpha = blendSrcAlpha;
    			currentBlendDstAlpha = blendDstAlpha;

    		}

    		currentBlending = blending;
    		currentPremultipledAlpha = null;

    	}

    	function setMaterial( material, frontFaceCW ) {

    		material.side === DoubleSide
    			? disable( 2884 )
    			: enable( 2884 );

    		let flipSided = ( material.side === BackSide );
    		if ( frontFaceCW ) flipSided = ! flipSided;

    		setFlipSided( flipSided );

    		( material.blending === NormalBlending && material.transparent === false )
    			? setBlending( NoBlending )
    			: setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.premultipliedAlpha );

    		depthBuffer.setFunc( material.depthFunc );
    		depthBuffer.setTest( material.depthTest );
    		depthBuffer.setMask( material.depthWrite );
    		colorBuffer.setMask( material.colorWrite );

    		const stencilWrite = material.stencilWrite;
    		stencilBuffer.setTest( stencilWrite );
    		if ( stencilWrite ) {

    			stencilBuffer.setMask( material.stencilWriteMask );
    			stencilBuffer.setFunc( material.stencilFunc, material.stencilRef, material.stencilFuncMask );
    			stencilBuffer.setOp( material.stencilFail, material.stencilZFail, material.stencilZPass );

    		}

    		setPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );

    		material.alphaToCoverage === true
    			? enable( 32926 )
    			: disable( 32926 );

    	}

    	//

    	function setFlipSided( flipSided ) {

    		if ( currentFlipSided !== flipSided ) {

    			if ( flipSided ) {

    				gl.frontFace( 2304 );

    			} else {

    				gl.frontFace( 2305 );

    			}

    			currentFlipSided = flipSided;

    		}

    	}

    	function setCullFace( cullFace ) {

    		if ( cullFace !== CullFaceNone ) {

    			enable( 2884 );

    			if ( cullFace !== currentCullFace ) {

    				if ( cullFace === CullFaceBack ) {

    					gl.cullFace( 1029 );

    				} else if ( cullFace === CullFaceFront ) {

    					gl.cullFace( 1028 );

    				} else {

    					gl.cullFace( 1032 );

    				}

    			}

    		} else {

    			disable( 2884 );

    		}

    		currentCullFace = cullFace;

    	}

    	function setLineWidth( width ) {

    		if ( width !== currentLineWidth ) {

    			if ( lineWidthAvailable ) gl.lineWidth( width );

    			currentLineWidth = width;

    		}

    	}

    	function setPolygonOffset( polygonOffset, factor, units ) {

    		if ( polygonOffset ) {

    			enable( 32823 );

    			if ( currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units ) {

    				gl.polygonOffset( factor, units );

    				currentPolygonOffsetFactor = factor;
    				currentPolygonOffsetUnits = units;

    			}

    		} else {

    			disable( 32823 );

    		}

    	}

    	function setScissorTest( scissorTest ) {

    		if ( scissorTest ) {

    			enable( 3089 );

    		} else {

    			disable( 3089 );

    		}

    	}

    	// texture

    	function activeTexture( webglSlot ) {

    		if ( webglSlot === undefined ) webglSlot = 33984 + maxTextures - 1;

    		if ( currentTextureSlot !== webglSlot ) {

    			gl.activeTexture( webglSlot );
    			currentTextureSlot = webglSlot;

    		}

    	}

    	function bindTexture( webglType, webglTexture, webglSlot ) {

    		if ( webglSlot === undefined ) {

    			if ( currentTextureSlot === null ) {

    				webglSlot = 33984 + maxTextures - 1;

    			} else {

    				webglSlot = currentTextureSlot;

    			}

    		}

    		let boundTexture = currentBoundTextures[ webglSlot ];

    		if ( boundTexture === undefined ) {

    			boundTexture = { type: undefined, texture: undefined };
    			currentBoundTextures[ webglSlot ] = boundTexture;

    		}

    		if ( boundTexture.type !== webglType || boundTexture.texture !== webglTexture ) {

    			if ( currentTextureSlot !== webglSlot ) {

    				gl.activeTexture( webglSlot );
    				currentTextureSlot = webglSlot;

    			}

    			gl.bindTexture( webglType, webglTexture || emptyTextures[ webglType ] );

    			boundTexture.type = webglType;
    			boundTexture.texture = webglTexture;

    		}

    	}

    	function unbindTexture() {

    		const boundTexture = currentBoundTextures[ currentTextureSlot ];

    		if ( boundTexture !== undefined && boundTexture.type !== undefined ) {

    			gl.bindTexture( boundTexture.type, null );

    			boundTexture.type = undefined;
    			boundTexture.texture = undefined;

    		}

    	}

    	function compressedTexImage2D() {

    		try {

    			gl.compressedTexImage2D.apply( gl, arguments );

    		} catch ( error ) {

    			console.error( 'THREE.WebGLState:', error );

    		}

    	}

    	function texSubImage2D() {

    		try {

    			gl.texSubImage2D.apply( gl, arguments );

    		} catch ( error ) {

    			console.error( 'THREE.WebGLState:', error );

    		}

    	}

    	function texSubImage3D() {

    		try {

    			gl.texSubImage3D.apply( gl, arguments );

    		} catch ( error ) {

    			console.error( 'THREE.WebGLState:', error );

    		}

    	}

    	function compressedTexSubImage2D() {

    		try {

    			gl.compressedTexSubImage2D.apply( gl, arguments );

    		} catch ( error ) {

    			console.error( 'THREE.WebGLState:', error );

    		}

    	}

    	function texStorage2D() {

    		try {

    			gl.texStorage2D.apply( gl, arguments );

    		} catch ( error ) {

    			console.error( 'THREE.WebGLState:', error );

    		}

    	}

    	function texStorage3D() {

    		try {

    			gl.texStorage3D.apply( gl, arguments );

    		} catch ( error ) {

    			console.error( 'THREE.WebGLState:', error );

    		}

    	}

    	function texImage2D() {

    		try {

    			gl.texImage2D.apply( gl, arguments );

    		} catch ( error ) {

    			console.error( 'THREE.WebGLState:', error );

    		}

    	}

    	function texImage3D() {

    		try {

    			gl.texImage3D.apply( gl, arguments );

    		} catch ( error ) {

    			console.error( 'THREE.WebGLState:', error );

    		}

    	}

    	//

    	function scissor( scissor ) {

    		if ( currentScissor.equals( scissor ) === false ) {

    			gl.scissor( scissor.x, scissor.y, scissor.z, scissor.w );
    			currentScissor.copy( scissor );

    		}

    	}

    	function viewport( viewport ) {

    		if ( currentViewport.equals( viewport ) === false ) {

    			gl.viewport( viewport.x, viewport.y, viewport.z, viewport.w );
    			currentViewport.copy( viewport );

    		}

    	}

    	function updateUBOMapping( uniformsGroup, program ) {

    		let mapping = uboProgamMap.get( program );

    		if ( mapping === undefined ) {

    			mapping = new WeakMap();

    			uboProgamMap.set( program, mapping );

    		}

    		let blockIndex = mapping.get( uniformsGroup );

    		if ( blockIndex === undefined ) {

    			blockIndex = gl.getUniformBlockIndex( program, uniformsGroup.name );

    			mapping.set( uniformsGroup, blockIndex );

    		}

    	}

    	function uniformBlockBinding( uniformsGroup, program ) {

    		const mapping = uboProgamMap.get( program );
    		const blockIndex = mapping.get( uniformsGroup );

    		if ( uboBindings.get( uniformsGroup ) !== blockIndex ) {

    			// bind shader specific block index to global block point

    			gl.uniformBlockBinding( program, blockIndex, uniformsGroup.__bindingPointIndex );

    			uboBindings.set( uniformsGroup, blockIndex );

    		}

    	}

    	//

    	function reset() {

    		// reset state

    		gl.disable( 3042 );
    		gl.disable( 2884 );
    		gl.disable( 2929 );
    		gl.disable( 32823 );
    		gl.disable( 3089 );
    		gl.disable( 2960 );
    		gl.disable( 32926 );

    		gl.blendEquation( 32774 );
    		gl.blendFunc( 1, 0 );
    		gl.blendFuncSeparate( 1, 0, 1, 0 );

    		gl.colorMask( true, true, true, true );
    		gl.clearColor( 0, 0, 0, 0 );

    		gl.depthMask( true );
    		gl.depthFunc( 513 );
    		gl.clearDepth( 1 );

    		gl.stencilMask( 0xffffffff );
    		gl.stencilFunc( 519, 0, 0xffffffff );
    		gl.stencilOp( 7680, 7680, 7680 );
    		gl.clearStencil( 0 );

    		gl.cullFace( 1029 );
    		gl.frontFace( 2305 );

    		gl.polygonOffset( 0, 0 );

    		gl.activeTexture( 33984 );

    		gl.bindFramebuffer( 36160, null );

    		if ( isWebGL2 === true ) {

    			gl.bindFramebuffer( 36009, null );
    			gl.bindFramebuffer( 36008, null );

    		}

    		gl.useProgram( null );

    		gl.lineWidth( 1 );

    		gl.scissor( 0, 0, gl.canvas.width, gl.canvas.height );
    		gl.viewport( 0, 0, gl.canvas.width, gl.canvas.height );

    		// reset internals

    		enabledCapabilities = {};

    		currentTextureSlot = null;
    		currentBoundTextures = {};

    		currentBoundFramebuffers = {};
    		currentDrawbuffers = new WeakMap();
    		defaultDrawbuffers = [];

    		currentProgram = null;

    		currentBlendingEnabled = false;
    		currentBlending = null;
    		currentBlendEquation = null;
    		currentBlendSrc = null;
    		currentBlendDst = null;
    		currentBlendEquationAlpha = null;
    		currentBlendSrcAlpha = null;
    		currentBlendDstAlpha = null;
    		currentPremultipledAlpha = false;

    		currentFlipSided = null;
    		currentCullFace = null;

    		currentLineWidth = null;

    		currentPolygonOffsetFactor = null;
    		currentPolygonOffsetUnits = null;

    		currentScissor.set( 0, 0, gl.canvas.width, gl.canvas.height );
    		currentViewport.set( 0, 0, gl.canvas.width, gl.canvas.height );

    		colorBuffer.reset();
    		depthBuffer.reset();
    		stencilBuffer.reset();

    	}

    	return {

    		buffers: {
    			color: colorBuffer,
    			depth: depthBuffer,
    			stencil: stencilBuffer
    		},

    		enable: enable,
    		disable: disable,

    		bindFramebuffer: bindFramebuffer,
    		drawBuffers: drawBuffers,

    		useProgram: useProgram,

    		setBlending: setBlending,
    		setMaterial: setMaterial,

    		setFlipSided: setFlipSided,
    		setCullFace: setCullFace,

    		setLineWidth: setLineWidth,
    		setPolygonOffset: setPolygonOffset,

    		setScissorTest: setScissorTest,

    		activeTexture: activeTexture,
    		bindTexture: bindTexture,
    		unbindTexture: unbindTexture,
    		compressedTexImage2D: compressedTexImage2D,
    		texImage2D: texImage2D,
    		texImage3D: texImage3D,

    		updateUBOMapping: updateUBOMapping,
    		uniformBlockBinding: uniformBlockBinding,

    		texStorage2D: texStorage2D,
    		texStorage3D: texStorage3D,
    		texSubImage2D: texSubImage2D,
    		texSubImage3D: texSubImage3D,
    		compressedTexSubImage2D: compressedTexSubImage2D,

    		scissor: scissor,
    		viewport: viewport,

    		reset: reset

    	};

    }

    function WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info ) {

    	const isWebGL2 = capabilities.isWebGL2;
    	const maxTextures = capabilities.maxTextures;
    	const maxCubemapSize = capabilities.maxCubemapSize;
    	const maxTextureSize = capabilities.maxTextureSize;
    	const maxSamples = capabilities.maxSamples;
    	const multisampledRTTExt = extensions.has( 'WEBGL_multisampled_render_to_texture' ) ? extensions.get( 'WEBGL_multisampled_render_to_texture' ) : null;
    	const supportsInvalidateFramebuffer = /OculusBrowser/g.test( navigator.userAgent );

    	const _videoTextures = new WeakMap();
    	let _canvas;

    	const _sources = new WeakMap(); // maps WebglTexture objects to instances of Source

    	// cordova iOS (as of 5.0) still uses UIWebView, which provides OffscreenCanvas,
    	// also OffscreenCanvas.getContext("webgl"), but not OffscreenCanvas.getContext("2d")!
    	// Some implementations may only implement OffscreenCanvas partially (e.g. lacking 2d).

    	let useOffscreenCanvas = false;

    	try {

    		useOffscreenCanvas = typeof OffscreenCanvas !== 'undefined'
    			// eslint-disable-next-line compat/compat
    			&& ( new OffscreenCanvas( 1, 1 ).getContext( '2d' ) ) !== null;

    	} catch ( err ) {

    		// Ignore any errors

    	}

    	function createCanvas( width, height ) {

    		// Use OffscreenCanvas when available. Specially needed in web workers

    		return useOffscreenCanvas ?
    			// eslint-disable-next-line compat/compat
    			new OffscreenCanvas( width, height ) : createElementNS( 'canvas' );

    	}

    	function resizeImage( image, needsPowerOfTwo, needsNewCanvas, maxSize ) {

    		let scale = 1;

    		// handle case if texture exceeds max size

    		if ( image.width > maxSize || image.height > maxSize ) {

    			scale = maxSize / Math.max( image.width, image.height );

    		}

    		// only perform resize if necessary

    		if ( scale < 1 || needsPowerOfTwo === true ) {

    			// only perform resize for certain image types

    			if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
    				( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
    				( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {

    				const floor = needsPowerOfTwo ? floorPowerOfTwo : Math.floor;

    				const width = floor( scale * image.width );
    				const height = floor( scale * image.height );

    				if ( _canvas === undefined ) _canvas = createCanvas( width, height );

    				// cube textures can't reuse the same canvas

    				const canvas = needsNewCanvas ? createCanvas( width, height ) : _canvas;

    				canvas.width = width;
    				canvas.height = height;

    				const context = canvas.getContext( '2d' );
    				context.drawImage( image, 0, 0, width, height );

    				console.warn( 'THREE.WebGLRenderer: Texture has been resized from (' + image.width + 'x' + image.height + ') to (' + width + 'x' + height + ').' );

    				return canvas;

    			} else {

    				if ( 'data' in image ) {

    					console.warn( 'THREE.WebGLRenderer: Image in DataTexture is too big (' + image.width + 'x' + image.height + ').' );

    				}

    				return image;

    			}

    		}

    		return image;

    	}

    	function isPowerOfTwo$1( image ) {

    		return isPowerOfTwo( image.width ) && isPowerOfTwo( image.height );

    	}

    	function textureNeedsPowerOfTwo( texture ) {

    		if ( isWebGL2 ) return false;

    		return ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) ||
    			( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter );

    	}

    	function textureNeedsGenerateMipmaps( texture, supportsMips ) {

    		return texture.generateMipmaps && supportsMips &&
    			texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;

    	}

    	function generateMipmap( target ) {

    		_gl.generateMipmap( target );

    	}

    	function getInternalFormat( internalFormatName, glFormat, glType, encoding, forceLinearEncoding = false ) {

    		if ( isWebGL2 === false ) return glFormat;

    		if ( internalFormatName !== null ) {

    			if ( _gl[ internalFormatName ] !== undefined ) return _gl[ internalFormatName ];

    			console.warn( 'THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \'' + internalFormatName + '\'' );

    		}

    		let internalFormat = glFormat;

    		if ( glFormat === 6403 ) {

    			if ( glType === 5126 ) internalFormat = 33326;
    			if ( glType === 5131 ) internalFormat = 33325;
    			if ( glType === 5121 ) internalFormat = 33321;

    		}

    		if ( glFormat === 33319 ) {

    			if ( glType === 5126 ) internalFormat = 33328;
    			if ( glType === 5131 ) internalFormat = 33327;
    			if ( glType === 5121 ) internalFormat = 33323;

    		}

    		if ( glFormat === 6408 ) {

    			if ( glType === 5126 ) internalFormat = 34836;
    			if ( glType === 5131 ) internalFormat = 34842;
    			if ( glType === 5121 ) internalFormat = ( encoding === sRGBEncoding && forceLinearEncoding === false ) ? 35907 : 32856;
    			if ( glType === 32819 ) internalFormat = 32854;
    			if ( glType === 32820 ) internalFormat = 32855;

    		}

    		if ( internalFormat === 33325 || internalFormat === 33326 ||
    			internalFormat === 33327 || internalFormat === 33328 ||
    			internalFormat === 34842 || internalFormat === 34836 ) {

    			extensions.get( 'EXT_color_buffer_float' );

    		}

    		return internalFormat;

    	}

    	function getMipLevels( texture, image, supportsMips ) {

    		if ( textureNeedsGenerateMipmaps( texture, supportsMips ) === true || ( texture.isFramebufferTexture && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) ) {

    			return Math.log2( Math.max( image.width, image.height ) ) + 1;

    		} else if ( texture.mipmaps !== undefined && texture.mipmaps.length > 0 ) {

    			// user-defined mipmaps

    			return texture.mipmaps.length;

    		} else if ( texture.isCompressedTexture && Array.isArray( texture.image ) ) {

    			return image.mipmaps.length;

    		} else {

    			// texture without mipmaps (only base level)

    			return 1;

    		}

    	}

    	// Fallback filters for non-power-of-2 textures

    	function filterFallback( f ) {

    		if ( f === NearestFilter || f === NearestMipmapNearestFilter || f === NearestMipmapLinearFilter ) {

    			return 9728;

    		}

    		return 9729;

    	}

    	//

    	function onTextureDispose( event ) {

    		const texture = event.target;

    		texture.removeEventListener( 'dispose', onTextureDispose );

    		deallocateTexture( texture );

    		if ( texture.isVideoTexture ) {

    			_videoTextures.delete( texture );

    		}

    	}

    	function onRenderTargetDispose( event ) {

    		const renderTarget = event.target;

    		renderTarget.removeEventListener( 'dispose', onRenderTargetDispose );

    		deallocateRenderTarget( renderTarget );

    	}

    	//

    	function deallocateTexture( texture ) {

    		const textureProperties = properties.get( texture );

    		if ( textureProperties.__webglInit === undefined ) return;

    		// check if it's necessary to remove the WebGLTexture object

    		const source = texture.source;
    		const webglTextures = _sources.get( source );

    		if ( webglTextures ) {

    			const webglTexture = webglTextures[ textureProperties.__cacheKey ];
    			webglTexture.usedTimes --;

    			// the WebGLTexture object is not used anymore, remove it

    			if ( webglTexture.usedTimes === 0 ) {

    				deleteTexture( texture );

    			}

    			// remove the weak map entry if no WebGLTexture uses the source anymore

    			if ( Object.keys( webglTextures ).length === 0 ) {

    				_sources.delete( source );

    			}

    		}

    		properties.remove( texture );

    	}

    	function deleteTexture( texture ) {

    		const textureProperties = properties.get( texture );
    		_gl.deleteTexture( textureProperties.__webglTexture );

    		const source = texture.source;
    		const webglTextures = _sources.get( source );
    		delete webglTextures[ textureProperties.__cacheKey ];

    		info.memory.textures --;

    	}

    	function deallocateRenderTarget( renderTarget ) {

    		const texture = renderTarget.texture;

    		const renderTargetProperties = properties.get( renderTarget );
    		const textureProperties = properties.get( texture );

    		if ( textureProperties.__webglTexture !== undefined ) {

    			_gl.deleteTexture( textureProperties.__webglTexture );

    			info.memory.textures --;

    		}

    		if ( renderTarget.depthTexture ) {

    			renderTarget.depthTexture.dispose();

    		}

    		if ( renderTarget.isWebGLCubeRenderTarget ) {

    			for ( let i = 0; i < 6; i ++ ) {

    				_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] );
    				if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] );

    			}

    		} else {

    			_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer );
    			if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer );
    			if ( renderTargetProperties.__webglMultisampledFramebuffer ) _gl.deleteFramebuffer( renderTargetProperties.__webglMultisampledFramebuffer );

    			if ( renderTargetProperties.__webglColorRenderbuffer ) {

    				for ( let i = 0; i < renderTargetProperties.__webglColorRenderbuffer.length; i ++ ) {

    					if ( renderTargetProperties.__webglColorRenderbuffer[ i ] ) _gl.deleteRenderbuffer( renderTargetProperties.__webglColorRenderbuffer[ i ] );

    				}

    			}

    			if ( renderTargetProperties.__webglDepthRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthRenderbuffer );

    		}

    		if ( renderTarget.isWebGLMultipleRenderTargets ) {

    			for ( let i = 0, il = texture.length; i < il; i ++ ) {

    				const attachmentProperties = properties.get( texture[ i ] );

    				if ( attachmentProperties.__webglTexture ) {

    					_gl.deleteTexture( attachmentProperties.__webglTexture );

    					info.memory.textures --;

    				}

    				properties.remove( texture[ i ] );

    			}

    		}

    		properties.remove( texture );
    		properties.remove( renderTarget );

    	}

    	//

    	let textureUnits = 0;

    	function resetTextureUnits() {

    		textureUnits = 0;

    	}

    	function allocateTextureUnit() {

    		const textureUnit = textureUnits;

    		if ( textureUnit >= maxTextures ) {

    			console.warn( 'THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + maxTextures );

    		}

    		textureUnits += 1;

    		return textureUnit;

    	}

    	function getTextureCacheKey( texture ) {

    		const array = [];

    		array.push( texture.wrapS );
    		array.push( texture.wrapT );
    		array.push( texture.magFilter );
    		array.push( texture.minFilter );
    		array.push( texture.anisotropy );
    		array.push( texture.internalFormat );
    		array.push( texture.format );
    		array.push( texture.type );
    		array.push( texture.generateMipmaps );
    		array.push( texture.premultiplyAlpha );
    		array.push( texture.flipY );
    		array.push( texture.unpackAlignment );
    		array.push( texture.encoding );

    		return array.join();

    	}

    	//

    	function setTexture2D( texture, slot ) {

    		const textureProperties = properties.get( texture );

    		if ( texture.isVideoTexture ) updateVideoTexture( texture );

    		if ( texture.isRenderTargetTexture === false && texture.version > 0 && textureProperties.__version !== texture.version ) {

    			const image = texture.image;

    			if ( image === null ) {

    				console.warn( 'THREE.WebGLRenderer: Texture marked for update but no image data found.' );

    			} else if ( image.complete === false ) {

    				console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is incomplete' );

    			} else {

    				uploadTexture( textureProperties, texture, slot );
    				return;

    			}

    		}

    		state.bindTexture( 3553, textureProperties.__webglTexture, 33984 + slot );

    	}

    	function setTexture2DArray( texture, slot ) {

    		const textureProperties = properties.get( texture );

    		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {

    			uploadTexture( textureProperties, texture, slot );
    			return;

    		}

    		state.bindTexture( 35866, textureProperties.__webglTexture, 33984 + slot );

    	}

    	function setTexture3D( texture, slot ) {

    		const textureProperties = properties.get( texture );

    		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {

    			uploadTexture( textureProperties, texture, slot );
    			return;

    		}

    		state.bindTexture( 32879, textureProperties.__webglTexture, 33984 + slot );

    	}

    	function setTextureCube( texture, slot ) {

    		const textureProperties = properties.get( texture );

    		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {

    			uploadCubeTexture( textureProperties, texture, slot );
    			return;

    		}

    		state.bindTexture( 34067, textureProperties.__webglTexture, 33984 + slot );

    	}

    	const wrappingToGL = {
    		[ RepeatWrapping ]: 10497,
    		[ ClampToEdgeWrapping ]: 33071,
    		[ MirroredRepeatWrapping ]: 33648
    	};

    	const filterToGL = {
    		[ NearestFilter ]: 9728,
    		[ NearestMipmapNearestFilter ]: 9984,
    		[ NearestMipmapLinearFilter ]: 9986,

    		[ LinearFilter ]: 9729,
    		[ LinearMipmapNearestFilter ]: 9985,
    		[ LinearMipmapLinearFilter ]: 9987
    	};

    	function setTextureParameters( textureType, texture, supportsMips ) {

    		if ( supportsMips ) {

    			_gl.texParameteri( textureType, 10242, wrappingToGL[ texture.wrapS ] );
    			_gl.texParameteri( textureType, 10243, wrappingToGL[ texture.wrapT ] );

    			if ( textureType === 32879 || textureType === 35866 ) {

    				_gl.texParameteri( textureType, 32882, wrappingToGL[ texture.wrapR ] );

    			}

    			_gl.texParameteri( textureType, 10240, filterToGL[ texture.magFilter ] );
    			_gl.texParameteri( textureType, 10241, filterToGL[ texture.minFilter ] );

    		} else {

    			_gl.texParameteri( textureType, 10242, 33071 );
    			_gl.texParameteri( textureType, 10243, 33071 );

    			if ( textureType === 32879 || textureType === 35866 ) {

    				_gl.texParameteri( textureType, 32882, 33071 );

    			}

    			if ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) {

    				console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.' );

    			}

    			_gl.texParameteri( textureType, 10240, filterFallback( texture.magFilter ) );
    			_gl.texParameteri( textureType, 10241, filterFallback( texture.minFilter ) );

    			if ( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) {

    				console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.' );

    			}

    		}

    		if ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {

    			const extension = extensions.get( 'EXT_texture_filter_anisotropic' );

    			if ( texture.type === FloatType && extensions.has( 'OES_texture_float_linear' ) === false ) return; // verify extension for WebGL 1 and WebGL 2
    			if ( isWebGL2 === false && ( texture.type === HalfFloatType && extensions.has( 'OES_texture_half_float_linear' ) === false ) ) return; // verify extension for WebGL 1 only

    			if ( texture.anisotropy > 1 || properties.get( texture ).__currentAnisotropy ) {

    				_gl.texParameterf( textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, capabilities.getMaxAnisotropy() ) );
    				properties.get( texture ).__currentAnisotropy = texture.anisotropy;

    			}

    		}

    	}

    	function initTexture( textureProperties, texture ) {

    		let forceUpload = false;

    		if ( textureProperties.__webglInit === undefined ) {

    			textureProperties.__webglInit = true;

    			texture.addEventListener( 'dispose', onTextureDispose );

    		}

    		// create Source <-> WebGLTextures mapping if necessary

    		const source = texture.source;
    		let webglTextures = _sources.get( source );

    		if ( webglTextures === undefined ) {

    			webglTextures = {};
    			_sources.set( source, webglTextures );

    		}

    		// check if there is already a WebGLTexture object for the given texture parameters

    		const textureCacheKey = getTextureCacheKey( texture );

    		if ( textureCacheKey !== textureProperties.__cacheKey ) {

    			// if not, create a new instance of WebGLTexture

    			if ( webglTextures[ textureCacheKey ] === undefined ) {

    				// create new entry

    				webglTextures[ textureCacheKey ] = {
    					texture: _gl.createTexture(),
    					usedTimes: 0
    				};

    				info.memory.textures ++;

    				// when a new instance of WebGLTexture was created, a texture upload is required
    				// even if the image contents are identical

    				forceUpload = true;

    			}

    			webglTextures[ textureCacheKey ].usedTimes ++;

    			// every time the texture cache key changes, it's necessary to check if an instance of
    			// WebGLTexture can be deleted in order to avoid a memory leak.

    			const webglTexture = webglTextures[ textureProperties.__cacheKey ];

    			if ( webglTexture !== undefined ) {

    				webglTextures[ textureProperties.__cacheKey ].usedTimes --;

    				if ( webglTexture.usedTimes === 0 ) {

    					deleteTexture( texture );

    				}

    			}

    			// store references to cache key and WebGLTexture object

    			textureProperties.__cacheKey = textureCacheKey;
    			textureProperties.__webglTexture = webglTextures[ textureCacheKey ].texture;

    		}

    		return forceUpload;

    	}

    	function uploadTexture( textureProperties, texture, slot ) {

    		let textureType = 3553;

    		if ( texture.isDataArrayTexture ) textureType = 35866;
    		if ( texture.isData3DTexture ) textureType = 32879;

    		const forceUpload = initTexture( textureProperties, texture );
    		const source = texture.source;

    		state.bindTexture( textureType, textureProperties.__webglTexture, 33984 + slot );

    		const sourceProperties = properties.get( source );

    		if ( source.version !== sourceProperties.__version || forceUpload === true ) {

    			state.activeTexture( 33984 + slot );

    			_gl.pixelStorei( 37440, texture.flipY );
    			_gl.pixelStorei( 37441, texture.premultiplyAlpha );
    			_gl.pixelStorei( 3317, texture.unpackAlignment );
    			_gl.pixelStorei( 37443, 0 );

    			const needsPowerOfTwo = textureNeedsPowerOfTwo( texture ) && isPowerOfTwo$1( texture.image ) === false;
    			let image = resizeImage( texture.image, needsPowerOfTwo, false, maxTextureSize );
    			image = verifyColorSpace( texture, image );

    			const supportsMips = isPowerOfTwo$1( image ) || isWebGL2,
    				glFormat = utils.convert( texture.format, texture.encoding );

    			let glType = utils.convert( texture.type ),
    				glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding, texture.isVideoTexture );

    			setTextureParameters( textureType, texture, supportsMips );

    			let mipmap;
    			const mipmaps = texture.mipmaps;

    			const useTexStorage = ( isWebGL2 && texture.isVideoTexture !== true );
    			const allocateMemory = ( sourceProperties.__version === undefined ) || ( forceUpload === true );
    			const levels = getMipLevels( texture, image, supportsMips );

    			if ( texture.isDepthTexture ) {

    				// populate depth texture with dummy data

    				glInternalFormat = 6402;

    				if ( isWebGL2 ) {

    					if ( texture.type === FloatType ) {

    						glInternalFormat = 36012;

    					} else if ( texture.type === UnsignedIntType ) {

    						glInternalFormat = 33190;

    					} else if ( texture.type === UnsignedInt248Type ) {

    						glInternalFormat = 35056;

    					} else {

    						glInternalFormat = 33189; // WebGL2 requires sized internalformat for glTexImage2D

    					}

    				} else {

    					if ( texture.type === FloatType ) {

    						console.error( 'WebGLRenderer: Floating point depth texture requires WebGL2.' );

    					}

    				}

    				// validation checks for WebGL 1

    				if ( texture.format === DepthFormat && glInternalFormat === 6402 ) {

    					// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
    					// DEPTH_COMPONENT and type is not UNSIGNED_SHORT or UNSIGNED_INT
    					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
    					if ( texture.type !== UnsignedShortType && texture.type !== UnsignedIntType ) {

    						console.warn( 'THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.' );

    						texture.type = UnsignedIntType;
    						glType = utils.convert( texture.type );

    					}

    				}

    				if ( texture.format === DepthStencilFormat && glInternalFormat === 6402 ) {

    					// Depth stencil textures need the DEPTH_STENCIL internal format
    					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
    					glInternalFormat = 34041;

    					// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
    					// DEPTH_STENCIL and type is not UNSIGNED_INT_24_8_WEBGL.
    					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
    					if ( texture.type !== UnsignedInt248Type ) {

    						console.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );

    						texture.type = UnsignedInt248Type;
    						glType = utils.convert( texture.type );

    					}

    				}

    				//

    				if ( allocateMemory ) {

    					if ( useTexStorage ) {

    						state.texStorage2D( 3553, 1, glInternalFormat, image.width, image.height );

    					} else {

    						state.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null );

    					}

    				}

    			} else if ( texture.isDataTexture ) {

    				// use manually created mipmaps if available
    				// if there are no manual mipmaps
    				// set 0 level mipmap and then use GL to generate other mipmap levels

    				if ( mipmaps.length > 0 && supportsMips ) {

    					if ( useTexStorage && allocateMemory ) {

    						state.texStorage2D( 3553, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );

    					}

    					for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {

    						mipmap = mipmaps[ i ];

    						if ( useTexStorage ) {

    							state.texSubImage2D( 3553, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );

    						} else {

    							state.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );

    						}

    					}

    					texture.generateMipmaps = false;

    				} else {

    					if ( useTexStorage ) {

    						if ( allocateMemory ) {

    							state.texStorage2D( 3553, levels, glInternalFormat, image.width, image.height );

    						}

    						state.texSubImage2D( 3553, 0, 0, 0, image.width, image.height, glFormat, glType, image.data );

    					} else {

    						state.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data );

    					}

    				}

    			} else if ( texture.isCompressedTexture ) {

    				if ( useTexStorage && allocateMemory ) {

    					state.texStorage2D( 3553, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );

    				}

    				for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {

    					mipmap = mipmaps[ i ];

    					if ( texture.format !== RGBAFormat ) {

    						if ( glFormat !== null ) {

    							if ( useTexStorage ) {

    								state.compressedTexSubImage2D( 3553, i, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data );

    							} else {

    								state.compressedTexImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );

    							}

    						} else {

    							console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );

    						}

    					} else {

    						if ( useTexStorage ) {

    							state.texSubImage2D( 3553, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );

    						} else {

    							state.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );

    						}

    					}

    				}

    			} else if ( texture.isDataArrayTexture ) {

    				if ( useTexStorage ) {

    					if ( allocateMemory ) {

    						state.texStorage3D( 35866, levels, glInternalFormat, image.width, image.height, image.depth );

    					}

    					state.texSubImage3D( 35866, 0, 0, 0, 0, image.width, image.height, image.depth, glFormat, glType, image.data );

    				} else {

    					state.texImage3D( 35866, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );

    				}

    			} else if ( texture.isData3DTexture ) {

    				if ( useTexStorage ) {

    					if ( allocateMemory ) {

    						state.texStorage3D( 32879, levels, glInternalFormat, image.width, image.height, image.depth );

    					}

    					state.texSubImage3D( 32879, 0, 0, 0, 0, image.width, image.height, image.depth, glFormat, glType, image.data );

    				} else {

    					state.texImage3D( 32879, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );

    				}

    			} else if ( texture.isFramebufferTexture ) {

    				if ( allocateMemory ) {

    					if ( useTexStorage ) {

    						state.texStorage2D( 3553, levels, glInternalFormat, image.width, image.height );

    					} else {

    						let width = image.width, height = image.height;

    						for ( let i = 0; i < levels; i ++ ) {

    							state.texImage2D( 3553, i, glInternalFormat, width, height, 0, glFormat, glType, null );

    							width >>= 1;
    							height >>= 1;

    						}

    					}

    				}

    			} else {

    				// regular Texture (image, video, canvas)

    				// use manually created mipmaps if available
    				// if there are no manual mipmaps
    				// set 0 level mipmap and then use GL to generate other mipmap levels

    				if ( mipmaps.length > 0 && supportsMips ) {

    					if ( useTexStorage && allocateMemory ) {

    						state.texStorage2D( 3553, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );

    					}

    					for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {

    						mipmap = mipmaps[ i ];

    						if ( useTexStorage ) {

    							state.texSubImage2D( 3553, i, 0, 0, glFormat, glType, mipmap );

    						} else {

    							state.texImage2D( 3553, i, glInternalFormat, glFormat, glType, mipmap );

    						}

    					}

    					texture.generateMipmaps = false;

    				} else {

    					if ( useTexStorage ) {

    						if ( allocateMemory ) {

    							state.texStorage2D( 3553, levels, glInternalFormat, image.width, image.height );

    						}

    						state.texSubImage2D( 3553, 0, 0, 0, glFormat, glType, image );

    					} else {

    						state.texImage2D( 3553, 0, glInternalFormat, glFormat, glType, image );

    					}

    				}

    			}

    			if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

    				generateMipmap( textureType );

    			}

    			sourceProperties.__version = source.version;

    			if ( texture.onUpdate ) texture.onUpdate( texture );

    		}

    		textureProperties.__version = texture.version;

    	}

    	function uploadCubeTexture( textureProperties, texture, slot ) {

    		if ( texture.image.length !== 6 ) return;

    		const forceUpload = initTexture( textureProperties, texture );
    		const source = texture.source;

    		state.bindTexture( 34067, textureProperties.__webglTexture, 33984 + slot );

    		const sourceProperties = properties.get( source );

    		if ( source.version !== sourceProperties.__version || forceUpload === true ) {

    			state.activeTexture( 33984 + slot );

    			_gl.pixelStorei( 37440, texture.flipY );
    			_gl.pixelStorei( 37441, texture.premultiplyAlpha );
    			_gl.pixelStorei( 3317, texture.unpackAlignment );
    			_gl.pixelStorei( 37443, 0 );

    			const isCompressed = ( texture.isCompressedTexture || texture.image[ 0 ].isCompressedTexture );
    			const isDataTexture = ( texture.image[ 0 ] && texture.image[ 0 ].isDataTexture );

    			const cubeImage = [];

    			for ( let i = 0; i < 6; i ++ ) {

    				if ( ! isCompressed && ! isDataTexture ) {

    					cubeImage[ i ] = resizeImage( texture.image[ i ], false, true, maxCubemapSize );

    				} else {

    					cubeImage[ i ] = isDataTexture ? texture.image[ i ].image : texture.image[ i ];

    				}

    				cubeImage[ i ] = verifyColorSpace( texture, cubeImage[ i ] );

    			}

    			const image = cubeImage[ 0 ],
    				supportsMips = isPowerOfTwo$1( image ) || isWebGL2,
    				glFormat = utils.convert( texture.format, texture.encoding ),
    				glType = utils.convert( texture.type ),
    				glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding );

    			const useTexStorage = ( isWebGL2 && texture.isVideoTexture !== true );
    			const allocateMemory = ( sourceProperties.__version === undefined ) || ( forceUpload === true );
    			let levels = getMipLevels( texture, image, supportsMips );

    			setTextureParameters( 34067, texture, supportsMips );

    			let mipmaps;

    			if ( isCompressed ) {

    				if ( useTexStorage && allocateMemory ) {

    					state.texStorage2D( 34067, levels, glInternalFormat, image.width, image.height );

    				}

    				for ( let i = 0; i < 6; i ++ ) {

    					mipmaps = cubeImage[ i ].mipmaps;

    					for ( let j = 0; j < mipmaps.length; j ++ ) {

    						const mipmap = mipmaps[ j ];

    						if ( texture.format !== RGBAFormat ) {

    							if ( glFormat !== null ) {

    								if ( useTexStorage ) {

    									state.compressedTexSubImage2D( 34069 + i, j, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data );

    								} else {

    									state.compressedTexImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );

    								}

    							} else {

    								console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()' );

    							}

    						} else {

    							if ( useTexStorage ) {

    								state.texSubImage2D( 34069 + i, j, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );

    							} else {

    								state.texImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );

    							}

    						}

    					}

    				}

    			} else {

    				mipmaps = texture.mipmaps;

    				if ( useTexStorage && allocateMemory ) {

    					// TODO: Uniformly handle mipmap definitions
    					// Normal textures and compressed cube textures define base level + mips with their mipmap array
    					// Uncompressed cube textures use their mipmap array only for mips (no base level)

    					if ( mipmaps.length > 0 ) levels ++;

    					state.texStorage2D( 34067, levels, glInternalFormat, cubeImage[ 0 ].width, cubeImage[ 0 ].height );

    				}

    				for ( let i = 0; i < 6; i ++ ) {

    					if ( isDataTexture ) {

    						if ( useTexStorage ) {

    							state.texSubImage2D( 34069 + i, 0, 0, 0, cubeImage[ i ].width, cubeImage[ i ].height, glFormat, glType, cubeImage[ i ].data );

    						} else {

    							state.texImage2D( 34069 + i, 0, glInternalFormat, cubeImage[ i ].width, cubeImage[ i ].height, 0, glFormat, glType, cubeImage[ i ].data );

    						}

    						for ( let j = 0; j < mipmaps.length; j ++ ) {

    							const mipmap = mipmaps[ j ];
    							const mipmapImage = mipmap.image[ i ].image;

    							if ( useTexStorage ) {

    								state.texSubImage2D( 34069 + i, j + 1, 0, 0, mipmapImage.width, mipmapImage.height, glFormat, glType, mipmapImage.data );

    							} else {

    								state.texImage2D( 34069 + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data );

    							}

    						}

    					} else {

    						if ( useTexStorage ) {

    							state.texSubImage2D( 34069 + i, 0, 0, 0, glFormat, glType, cubeImage[ i ] );

    						} else {

    							state.texImage2D( 34069 + i, 0, glInternalFormat, glFormat, glType, cubeImage[ i ] );

    						}

    						for ( let j = 0; j < mipmaps.length; j ++ ) {

    							const mipmap = mipmaps[ j ];

    							if ( useTexStorage ) {

    								state.texSubImage2D( 34069 + i, j + 1, 0, 0, glFormat, glType, mipmap.image[ i ] );

    							} else {

    								state.texImage2D( 34069 + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[ i ] );

    							}

    						}

    					}

    				}

    			}

    			if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

    				// We assume images for cube map have the same size.
    				generateMipmap( 34067 );

    			}

    			sourceProperties.__version = source.version;

    			if ( texture.onUpdate ) texture.onUpdate( texture );

    		}

    		textureProperties.__version = texture.version;

    	}

    	// Render targets

    	// Setup storage for target texture and bind it to correct framebuffer
    	function setupFrameBufferTexture( framebuffer, renderTarget, texture, attachment, textureTarget ) {

    		const glFormat = utils.convert( texture.format, texture.encoding );
    		const glType = utils.convert( texture.type );
    		const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding );
    		const renderTargetProperties = properties.get( renderTarget );

    		if ( ! renderTargetProperties.__hasExternalTextures ) {

    			if ( textureTarget === 32879 || textureTarget === 35866 ) {

    				state.texImage3D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, renderTarget.depth, 0, glFormat, glType, null );

    			} else {

    				state.texImage2D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null );

    			}

    		}

    		state.bindFramebuffer( 36160, framebuffer );

    		if ( useMultisampledRTT( renderTarget ) ) {

    			multisampledRTTExt.framebufferTexture2DMultisampleEXT( 36160, attachment, textureTarget, properties.get( texture ).__webglTexture, 0, getRenderTargetSamples( renderTarget ) );

    		} else {

    			_gl.framebufferTexture2D( 36160, attachment, textureTarget, properties.get( texture ).__webglTexture, 0 );

    		}

    		state.bindFramebuffer( 36160, null );

    	}


    	// Setup storage for internal depth/stencil buffers and bind to correct framebuffer
    	function setupRenderBufferStorage( renderbuffer, renderTarget, isMultisample ) {

    		_gl.bindRenderbuffer( 36161, renderbuffer );

    		if ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {

    			let glInternalFormat = 33189;

    			if ( isMultisample || useMultisampledRTT( renderTarget ) ) {

    				const depthTexture = renderTarget.depthTexture;

    				if ( depthTexture && depthTexture.isDepthTexture ) {

    					if ( depthTexture.type === FloatType ) {

    						glInternalFormat = 36012;

    					} else if ( depthTexture.type === UnsignedIntType ) {

    						glInternalFormat = 33190;

    					}

    				}

    				const samples = getRenderTargetSamples( renderTarget );

    				if ( useMultisampledRTT( renderTarget ) ) {

    					multisampledRTTExt.renderbufferStorageMultisampleEXT( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

    				} else {

    					_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

    				}

    			} else {

    				_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );

    			}

    			_gl.framebufferRenderbuffer( 36160, 36096, 36161, renderbuffer );

    		} else if ( renderTarget.depthBuffer && renderTarget.stencilBuffer ) {

    			const samples = getRenderTargetSamples( renderTarget );

    			if ( isMultisample && useMultisampledRTT( renderTarget ) === false ) {

    				_gl.renderbufferStorageMultisample( 36161, samples, 35056, renderTarget.width, renderTarget.height );

    			} else if ( useMultisampledRTT( renderTarget ) ) {

    				multisampledRTTExt.renderbufferStorageMultisampleEXT( 36161, samples, 35056, renderTarget.width, renderTarget.height );

    			} else {

    				_gl.renderbufferStorage( 36161, 34041, renderTarget.width, renderTarget.height );

    			}


    			_gl.framebufferRenderbuffer( 36160, 33306, 36161, renderbuffer );

    		} else {

    			const textures = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture : [ renderTarget.texture ];

    			for ( let i = 0; i < textures.length; i ++ ) {

    				const texture = textures[ i ];

    				const glFormat = utils.convert( texture.format, texture.encoding );
    				const glType = utils.convert( texture.type );
    				const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding );
    				const samples = getRenderTargetSamples( renderTarget );

    				if ( isMultisample && useMultisampledRTT( renderTarget ) === false ) {

    					_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

    				} else if ( useMultisampledRTT( renderTarget ) ) {

    					multisampledRTTExt.renderbufferStorageMultisampleEXT( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

    				} else {

    					_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );

    				}

    			}

    		}

    		_gl.bindRenderbuffer( 36161, null );

    	}

    	// Setup resources for a Depth Texture for a FBO (needs an extension)
    	function setupDepthTexture( framebuffer, renderTarget ) {

    		const isCube = ( renderTarget && renderTarget.isWebGLCubeRenderTarget );
    		if ( isCube ) throw new Error( 'Depth Texture with cube render targets is not supported' );

    		state.bindFramebuffer( 36160, framebuffer );

    		if ( ! ( renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture ) ) {

    			throw new Error( 'renderTarget.depthTexture must be an instance of THREE.DepthTexture' );

    		}

    		// upload an empty depth texture with framebuffer size
    		if ( ! properties.get( renderTarget.depthTexture ).__webglTexture ||
    				renderTarget.depthTexture.image.width !== renderTarget.width ||
    				renderTarget.depthTexture.image.height !== renderTarget.height ) {

    			renderTarget.depthTexture.image.width = renderTarget.width;
    			renderTarget.depthTexture.image.height = renderTarget.height;
    			renderTarget.depthTexture.needsUpdate = true;

    		}

    		setTexture2D( renderTarget.depthTexture, 0 );

    		const webglDepthTexture = properties.get( renderTarget.depthTexture ).__webglTexture;
    		const samples = getRenderTargetSamples( renderTarget );

    		if ( renderTarget.depthTexture.format === DepthFormat ) {

    			if ( useMultisampledRTT( renderTarget ) ) {

    				multisampledRTTExt.framebufferTexture2DMultisampleEXT( 36160, 36096, 3553, webglDepthTexture, 0, samples );

    			} else {

    				_gl.framebufferTexture2D( 36160, 36096, 3553, webglDepthTexture, 0 );

    			}

    		} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {

    			if ( useMultisampledRTT( renderTarget ) ) {

    				multisampledRTTExt.framebufferTexture2DMultisampleEXT( 36160, 33306, 3553, webglDepthTexture, 0, samples );

    			} else {

    				_gl.framebufferTexture2D( 36160, 33306, 3553, webglDepthTexture, 0 );

    			}

    		} else {

    			throw new Error( 'Unknown depthTexture format' );

    		}

    	}

    	// Setup GL resources for a non-texture depth buffer
    	function setupDepthRenderbuffer( renderTarget ) {

    		const renderTargetProperties = properties.get( renderTarget );
    		const isCube = ( renderTarget.isWebGLCubeRenderTarget === true );

    		if ( renderTarget.depthTexture && ! renderTargetProperties.__autoAllocateDepthBuffer ) {

    			if ( isCube ) throw new Error( 'target.depthTexture not supported in Cube render targets' );

    			setupDepthTexture( renderTargetProperties.__webglFramebuffer, renderTarget );

    		} else {

    			if ( isCube ) {

    				renderTargetProperties.__webglDepthbuffer = [];

    				for ( let i = 0; i < 6; i ++ ) {

    					state.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer[ i ] );
    					renderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer();
    					setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget, false );

    				}

    			} else {

    				state.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer );
    				renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();
    				setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget, false );

    			}

    		}

    		state.bindFramebuffer( 36160, null );

    	}

    	// rebind framebuffer with external textures
    	function rebindTextures( renderTarget, colorTexture, depthTexture ) {

    		const renderTargetProperties = properties.get( renderTarget );

    		if ( colorTexture !== undefined ) {

    			setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, renderTarget.texture, 36064, 3553 );

    		}

    		if ( depthTexture !== undefined ) {

    			setupDepthRenderbuffer( renderTarget );

    		}

    	}

    	// Set up GL resources for the render target
    	function setupRenderTarget( renderTarget ) {

    		const texture = renderTarget.texture;

    		const renderTargetProperties = properties.get( renderTarget );
    		const textureProperties = properties.get( texture );

    		renderTarget.addEventListener( 'dispose', onRenderTargetDispose );

    		if ( renderTarget.isWebGLMultipleRenderTargets !== true ) {

    			if ( textureProperties.__webglTexture === undefined ) {

    				textureProperties.__webglTexture = _gl.createTexture();

    			}

    			textureProperties.__version = texture.version;
    			info.memory.textures ++;

    		}

    		const isCube = ( renderTarget.isWebGLCubeRenderTarget === true );
    		const isMultipleRenderTargets = ( renderTarget.isWebGLMultipleRenderTargets === true );
    		const supportsMips = isPowerOfTwo$1( renderTarget ) || isWebGL2;

    		// Setup framebuffer

    		if ( isCube ) {

    			renderTargetProperties.__webglFramebuffer = [];

    			for ( let i = 0; i < 6; i ++ ) {

    				renderTargetProperties.__webglFramebuffer[ i ] = _gl.createFramebuffer();

    			}

    		} else {

    			renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();

    			if ( isMultipleRenderTargets ) {

    				if ( capabilities.drawBuffers ) {

    					const textures = renderTarget.texture;

    					for ( let i = 0, il = textures.length; i < il; i ++ ) {

    						const attachmentProperties = properties.get( textures[ i ] );

    						if ( attachmentProperties.__webglTexture === undefined ) {

    							attachmentProperties.__webglTexture = _gl.createTexture();

    							info.memory.textures ++;

    						}

    					}

    				} else {

    					console.warn( 'THREE.WebGLRenderer: WebGLMultipleRenderTargets can only be used with WebGL2 or WEBGL_draw_buffers extension.' );

    				}

    			}

    			if ( ( isWebGL2 && renderTarget.samples > 0 ) && useMultisampledRTT( renderTarget ) === false ) {

    				const textures = isMultipleRenderTargets ? texture : [ texture ];

    				renderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();
    				renderTargetProperties.__webglColorRenderbuffer = [];

    				state.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );

    				for ( let i = 0; i < textures.length; i ++ ) {

    					const texture = textures[ i ];
    					renderTargetProperties.__webglColorRenderbuffer[ i ] = _gl.createRenderbuffer();

    					_gl.bindRenderbuffer( 36161, renderTargetProperties.__webglColorRenderbuffer[ i ] );

    					const glFormat = utils.convert( texture.format, texture.encoding );
    					const glType = utils.convert( texture.type );
    					const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding, renderTarget.isXRRenderTarget === true );
    					const samples = getRenderTargetSamples( renderTarget );
    					_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

    					_gl.framebufferRenderbuffer( 36160, 36064 + i, 36161, renderTargetProperties.__webglColorRenderbuffer[ i ] );

    				}

    				_gl.bindRenderbuffer( 36161, null );

    				if ( renderTarget.depthBuffer ) {

    					renderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();
    					setupRenderBufferStorage( renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true );

    				}

    				state.bindFramebuffer( 36160, null );

    			}

    		}

    		// Setup color buffer

    		if ( isCube ) {

    			state.bindTexture( 34067, textureProperties.__webglTexture );
    			setTextureParameters( 34067, texture, supportsMips );

    			for ( let i = 0; i < 6; i ++ ) {

    				setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, texture, 36064, 34069 + i );

    			}

    			if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

    				generateMipmap( 34067 );

    			}

    			state.unbindTexture();

    		} else if ( isMultipleRenderTargets ) {

    			const textures = renderTarget.texture;

    			for ( let i = 0, il = textures.length; i < il; i ++ ) {

    				const attachment = textures[ i ];
    				const attachmentProperties = properties.get( attachment );

    				state.bindTexture( 3553, attachmentProperties.__webglTexture );
    				setTextureParameters( 3553, attachment, supportsMips );
    				setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, attachment, 36064 + i, 3553 );

    				if ( textureNeedsGenerateMipmaps( attachment, supportsMips ) ) {

    					generateMipmap( 3553 );

    				}

    			}

    			state.unbindTexture();

    		} else {

    			let glTextureType = 3553;

    			if ( renderTarget.isWebGL3DRenderTarget || renderTarget.isWebGLArrayRenderTarget ) {

    				if ( isWebGL2 ) {

    					glTextureType = renderTarget.isWebGL3DRenderTarget ? 32879 : 35866;

    				} else {

    					console.error( 'THREE.WebGLTextures: THREE.Data3DTexture and THREE.DataArrayTexture only supported with WebGL2.' );

    				}

    			}

    			state.bindTexture( glTextureType, textureProperties.__webglTexture );
    			setTextureParameters( glTextureType, texture, supportsMips );
    			setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, texture, 36064, glTextureType );

    			if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

    				generateMipmap( glTextureType );

    			}

    			state.unbindTexture();

    		}

    		// Setup depth and stencil buffers

    		if ( renderTarget.depthBuffer ) {

    			setupDepthRenderbuffer( renderTarget );

    		}

    	}

    	function updateRenderTargetMipmap( renderTarget ) {

    		const supportsMips = isPowerOfTwo$1( renderTarget ) || isWebGL2;

    		const textures = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture : [ renderTarget.texture ];

    		for ( let i = 0, il = textures.length; i < il; i ++ ) {

    			const texture = textures[ i ];

    			if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

    				const target = renderTarget.isWebGLCubeRenderTarget ? 34067 : 3553;
    				const webglTexture = properties.get( texture ).__webglTexture;

    				state.bindTexture( target, webglTexture );
    				generateMipmap( target );
    				state.unbindTexture();

    			}

    		}

    	}

    	function updateMultisampleRenderTarget( renderTarget ) {

    		if ( ( isWebGL2 && renderTarget.samples > 0 ) && useMultisampledRTT( renderTarget ) === false ) {

    			const textures = renderTarget.isWebGLMultipleRenderTargets ? renderTarget.texture : [ renderTarget.texture ];
    			const width = renderTarget.width;
    			const height = renderTarget.height;
    			let mask = 16384;
    			const invalidationArray = [];
    			const depthStyle = renderTarget.stencilBuffer ? 33306 : 36096;
    			const renderTargetProperties = properties.get( renderTarget );
    			const isMultipleRenderTargets = ( renderTarget.isWebGLMultipleRenderTargets === true );

    			// If MRT we need to remove FBO attachments
    			if ( isMultipleRenderTargets ) {

    				for ( let i = 0; i < textures.length; i ++ ) {

    					state.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );
    					_gl.framebufferRenderbuffer( 36160, 36064 + i, 36161, null );

    					state.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer );
    					_gl.framebufferTexture2D( 36009, 36064 + i, 3553, null, 0 );

    				}

    			}

    			state.bindFramebuffer( 36008, renderTargetProperties.__webglMultisampledFramebuffer );
    			state.bindFramebuffer( 36009, renderTargetProperties.__webglFramebuffer );

    			for ( let i = 0; i < textures.length; i ++ ) {

    				invalidationArray.push( 36064 + i );

    				if ( renderTarget.depthBuffer ) {

    					invalidationArray.push( depthStyle );

    				}

    				const ignoreDepthValues = ( renderTargetProperties.__ignoreDepthValues !== undefined ) ? renderTargetProperties.__ignoreDepthValues : false;

    				if ( ignoreDepthValues === false ) {

    					if ( renderTarget.depthBuffer ) mask |= 256;
    					if ( renderTarget.stencilBuffer ) mask |= 1024;

    				}

    				if ( isMultipleRenderTargets ) {

    					_gl.framebufferRenderbuffer( 36008, 36064, 36161, renderTargetProperties.__webglColorRenderbuffer[ i ] );

    				}

    				if ( ignoreDepthValues === true ) {

    					_gl.invalidateFramebuffer( 36008, [ depthStyle ] );
    					_gl.invalidateFramebuffer( 36009, [ depthStyle ] );

    				}

    				if ( isMultipleRenderTargets ) {

    					const webglTexture = properties.get( textures[ i ] ).__webglTexture;
    					_gl.framebufferTexture2D( 36009, 36064, 3553, webglTexture, 0 );

    				}

    				_gl.blitFramebuffer( 0, 0, width, height, 0, 0, width, height, mask, 9728 );

    				if ( supportsInvalidateFramebuffer ) {

    					_gl.invalidateFramebuffer( 36008, invalidationArray );

    				}


    			}

    			state.bindFramebuffer( 36008, null );
    			state.bindFramebuffer( 36009, null );

    			// If MRT since pre-blit we removed the FBO we need to reconstruct the attachments
    			if ( isMultipleRenderTargets ) {

    				for ( let i = 0; i < textures.length; i ++ ) {

    					state.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );
    					_gl.framebufferRenderbuffer( 36160, 36064 + i, 36161, renderTargetProperties.__webglColorRenderbuffer[ i ] );

    					const webglTexture = properties.get( textures[ i ] ).__webglTexture;

    					state.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer );
    					_gl.framebufferTexture2D( 36009, 36064 + i, 3553, webglTexture, 0 );

    				}

    			}

    			state.bindFramebuffer( 36009, renderTargetProperties.__webglMultisampledFramebuffer );

    		}

    	}

    	function getRenderTargetSamples( renderTarget ) {

    		return Math.min( maxSamples, renderTarget.samples );

    	}

    	function useMultisampledRTT( renderTarget ) {

    		const renderTargetProperties = properties.get( renderTarget );

    		return isWebGL2 && renderTarget.samples > 0 && extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true && renderTargetProperties.__useRenderToTexture !== false;

    	}

    	function updateVideoTexture( texture ) {

    		const frame = info.render.frame;

    		// Check the last frame we updated the VideoTexture

    		if ( _videoTextures.get( texture ) !== frame ) {

    			_videoTextures.set( texture, frame );
    			texture.update();

    		}

    	}

    	function verifyColorSpace( texture, image ) {

    		const encoding = texture.encoding;
    		const format = texture.format;
    		const type = texture.type;

    		if ( texture.isCompressedTexture === true || texture.isVideoTexture === true || texture.format === _SRGBAFormat ) return image;

    		if ( encoding !== LinearEncoding ) {

    			// sRGB

    			if ( encoding === sRGBEncoding ) {

    				if ( isWebGL2 === false ) {

    					// in WebGL 1, try to use EXT_sRGB extension and unsized formats

    					if ( extensions.has( 'EXT_sRGB' ) === true && format === RGBAFormat ) {

    						texture.format = _SRGBAFormat;

    						// it's not possible to generate mips in WebGL 1 with this extension

    						texture.minFilter = LinearFilter;
    						texture.generateMipmaps = false;

    					} else {

    						// slow fallback (CPU decode)

    						image = ImageUtils.sRGBToLinear( image );

    					}

    				} else {

    					// in WebGL 2 uncompressed textures can only be sRGB encoded if they have the RGBA8 format

    					if ( format !== RGBAFormat || type !== UnsignedByteType ) {

    						console.warn( 'THREE.WebGLTextures: sRGB encoded textures have to use RGBAFormat and UnsignedByteType.' );

    					}

    				}

    			} else {

    				console.error( 'THREE.WebGLTextures: Unsupported texture encoding:', encoding );

    			}

    		}

    		return image;

    	}

    	//

    	this.allocateTextureUnit = allocateTextureUnit;
    	this.resetTextureUnits = resetTextureUnits;

    	this.setTexture2D = setTexture2D;
    	this.setTexture2DArray = setTexture2DArray;
    	this.setTexture3D = setTexture3D;
    	this.setTextureCube = setTextureCube;
    	this.rebindTextures = rebindTextures;
    	this.setupRenderTarget = setupRenderTarget;
    	this.updateRenderTargetMipmap = updateRenderTargetMipmap;
    	this.updateMultisampleRenderTarget = updateMultisampleRenderTarget;
    	this.setupDepthRenderbuffer = setupDepthRenderbuffer;
    	this.setupFrameBufferTexture = setupFrameBufferTexture;
    	this.useMultisampledRTT = useMultisampledRTT;

    }

    function WebGLUtils( gl, extensions, capabilities ) {

    	const isWebGL2 = capabilities.isWebGL2;

    	function convert( p, encoding = null ) {

    		let extension;

    		if ( p === UnsignedByteType ) return 5121;
    		if ( p === UnsignedShort4444Type ) return 32819;
    		if ( p === UnsignedShort5551Type ) return 32820;

    		if ( p === ByteType ) return 5120;
    		if ( p === ShortType ) return 5122;
    		if ( p === UnsignedShortType ) return 5123;
    		if ( p === IntType ) return 5124;
    		if ( p === UnsignedIntType ) return 5125;
    		if ( p === FloatType ) return 5126;

    		if ( p === HalfFloatType ) {

    			if ( isWebGL2 ) return 5131;

    			extension = extensions.get( 'OES_texture_half_float' );

    			if ( extension !== null ) {

    				return extension.HALF_FLOAT_OES;

    			} else {

    				return null;

    			}

    		}

    		if ( p === AlphaFormat ) return 6406;
    		if ( p === RGBAFormat ) return 6408;
    		if ( p === LuminanceFormat ) return 6409;
    		if ( p === LuminanceAlphaFormat ) return 6410;
    		if ( p === DepthFormat ) return 6402;
    		if ( p === DepthStencilFormat ) return 34041;
    		if ( p === RedFormat ) return 6403;

    		// @deprecated since r137

    		if ( p === RGBFormat ) {

    			console.warn( 'THREE.WebGLRenderer: THREE.RGBFormat has been removed. Use THREE.RGBAFormat instead. https://github.com/mrdoob/three.js/pull/23228' );
    			return 6408;

    		}

    		// WebGL 1 sRGB fallback

    		if ( p === _SRGBAFormat ) {

    			extension = extensions.get( 'EXT_sRGB' );

    			if ( extension !== null ) {

    				return extension.SRGB_ALPHA_EXT;

    			} else {

    				return null;

    			}

    		}

    		// WebGL2 formats.

    		if ( p === RedIntegerFormat ) return 36244;
    		if ( p === RGFormat ) return 33319;
    		if ( p === RGIntegerFormat ) return 33320;
    		if ( p === RGBAIntegerFormat ) return 36249;

    		// S3TC

    		if ( p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format || p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format ) {

    			if ( encoding === sRGBEncoding ) {

    				extension = extensions.get( 'WEBGL_compressed_texture_s3tc_srgb' );

    				if ( extension !== null ) {

    					if ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_SRGB_S3TC_DXT1_EXT;
    					if ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
    					if ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT;
    					if ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;

    				} else {

    					return null;

    				}

    			} else {

    				extension = extensions.get( 'WEBGL_compressed_texture_s3tc' );

    				if ( extension !== null ) {

    					if ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
    					if ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
    					if ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
    					if ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;

    				} else {

    					return null;

    				}

    			}

    		}

    		// PVRTC

    		if ( p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format || p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format ) {

    			extension = extensions.get( 'WEBGL_compressed_texture_pvrtc' );

    			if ( extension !== null ) {

    				if ( p === RGB_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
    				if ( p === RGB_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
    				if ( p === RGBA_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
    				if ( p === RGBA_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;

    			} else {

    				return null;

    			}

    		}

    		// ETC1

    		if ( p === RGB_ETC1_Format ) {

    			extension = extensions.get( 'WEBGL_compressed_texture_etc1' );

    			if ( extension !== null ) {

    				return extension.COMPRESSED_RGB_ETC1_WEBGL;

    			} else {

    				return null;

    			}

    		}

    		// ETC2

    		if ( p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format ) {

    			extension = extensions.get( 'WEBGL_compressed_texture_etc' );

    			if ( extension !== null ) {

    				if ( p === RGB_ETC2_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ETC2 : extension.COMPRESSED_RGB8_ETC2;
    				if ( p === RGBA_ETC2_EAC_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC : extension.COMPRESSED_RGBA8_ETC2_EAC;

    			} else {

    				return null;

    			}

    		}

    		// ASTC

    		if ( p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format ||
    			p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format ||
    			p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format ||
    			p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format ||
    			p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format ) {

    			extension = extensions.get( 'WEBGL_compressed_texture_astc' );

    			if ( extension !== null ) {

    				if ( p === RGBA_ASTC_4x4_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR : extension.COMPRESSED_RGBA_ASTC_4x4_KHR;
    				if ( p === RGBA_ASTC_5x4_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR : extension.COMPRESSED_RGBA_ASTC_5x4_KHR;
    				if ( p === RGBA_ASTC_5x5_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR : extension.COMPRESSED_RGBA_ASTC_5x5_KHR;
    				if ( p === RGBA_ASTC_6x5_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR : extension.COMPRESSED_RGBA_ASTC_6x5_KHR;
    				if ( p === RGBA_ASTC_6x6_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR : extension.COMPRESSED_RGBA_ASTC_6x6_KHR;
    				if ( p === RGBA_ASTC_8x5_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR : extension.COMPRESSED_RGBA_ASTC_8x5_KHR;
    				if ( p === RGBA_ASTC_8x6_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR : extension.COMPRESSED_RGBA_ASTC_8x6_KHR;
    				if ( p === RGBA_ASTC_8x8_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR : extension.COMPRESSED_RGBA_ASTC_8x8_KHR;
    				if ( p === RGBA_ASTC_10x5_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR : extension.COMPRESSED_RGBA_ASTC_10x5_KHR;
    				if ( p === RGBA_ASTC_10x6_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR : extension.COMPRESSED_RGBA_ASTC_10x6_KHR;
    				if ( p === RGBA_ASTC_10x8_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR : extension.COMPRESSED_RGBA_ASTC_10x8_KHR;
    				if ( p === RGBA_ASTC_10x10_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR : extension.COMPRESSED_RGBA_ASTC_10x10_KHR;
    				if ( p === RGBA_ASTC_12x10_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR : extension.COMPRESSED_RGBA_ASTC_12x10_KHR;
    				if ( p === RGBA_ASTC_12x12_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR : extension.COMPRESSED_RGBA_ASTC_12x12_KHR;

    			} else {

    				return null;

    			}

    		}

    		// BPTC

    		if ( p === RGBA_BPTC_Format ) {

    			extension = extensions.get( 'EXT_texture_compression_bptc' );

    			if ( extension !== null ) {

    				if ( p === RGBA_BPTC_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT : extension.COMPRESSED_RGBA_BPTC_UNORM_EXT;

    			} else {

    				return null;

    			}

    		}

    		//

    		if ( p === UnsignedInt248Type ) {

    			if ( isWebGL2 ) return 34042;

    			extension = extensions.get( 'WEBGL_depth_texture' );

    			if ( extension !== null ) {

    				return extension.UNSIGNED_INT_24_8_WEBGL;

    			} else {

    				return null;

    			}

    		}

    		// if "p" can't be resolved, assume the user defines a WebGL constant as a string (fallback/workaround for packed RGB formats)

    		return ( gl[ p ] !== undefined ) ? gl[ p ] : null;

    	}

    	return { convert: convert };

    }

    class ArrayCamera extends PerspectiveCamera {

    	constructor( array = [] ) {

    		super();

    		this.isArrayCamera = true;

    		this.cameras = array;

    	}

    }

    class Group extends Object3D {

    	constructor() {

    		super();

    		this.isGroup = true;

    		this.type = 'Group';

    	}

    }

    const _moveEvent = { type: 'move' };

    class WebXRController {

    	constructor() {

    		this._targetRay = null;
    		this._grip = null;
    		this._hand = null;

    	}

    	getHandSpace() {

    		if ( this._hand === null ) {

    			this._hand = new Group();
    			this._hand.matrixAutoUpdate = false;
    			this._hand.visible = false;

    			this._hand.joints = {};
    			this._hand.inputState = { pinching: false };

    		}

    		return this._hand;

    	}

    	getTargetRaySpace() {

    		if ( this._targetRay === null ) {

    			this._targetRay = new Group();
    			this._targetRay.matrixAutoUpdate = false;
    			this._targetRay.visible = false;
    			this._targetRay.hasLinearVelocity = false;
    			this._targetRay.linearVelocity = new Vector3();
    			this._targetRay.hasAngularVelocity = false;
    			this._targetRay.angularVelocity = new Vector3();

    		}

    		return this._targetRay;

    	}

    	getGripSpace() {

    		if ( this._grip === null ) {

    			this._grip = new Group();
    			this._grip.matrixAutoUpdate = false;
    			this._grip.visible = false;
    			this._grip.hasLinearVelocity = false;
    			this._grip.linearVelocity = new Vector3();
    			this._grip.hasAngularVelocity = false;
    			this._grip.angularVelocity = new Vector3();

    		}

    		return this._grip;

    	}

    	dispatchEvent( event ) {

    		if ( this._targetRay !== null ) {

    			this._targetRay.dispatchEvent( event );

    		}

    		if ( this._grip !== null ) {

    			this._grip.dispatchEvent( event );

    		}

    		if ( this._hand !== null ) {

    			this._hand.dispatchEvent( event );

    		}

    		return this;

    	}

    	disconnect( inputSource ) {

    		this.dispatchEvent( { type: 'disconnected', data: inputSource } );

    		if ( this._targetRay !== null ) {

    			this._targetRay.visible = false;

    		}

    		if ( this._grip !== null ) {

    			this._grip.visible = false;

    		}

    		if ( this._hand !== null ) {

    			this._hand.visible = false;

    		}

    		return this;

    	}

    	update( inputSource, frame, referenceSpace ) {

    		let inputPose = null;
    		let gripPose = null;
    		let handPose = null;

    		const targetRay = this._targetRay;
    		const grip = this._grip;
    		const hand = this._hand;

    		if ( inputSource && frame.session.visibilityState !== 'visible-blurred' ) {

    			if ( hand && inputSource.hand ) {

    				handPose = true;

    				for ( const inputjoint of inputSource.hand.values() ) {

    					// Update the joints groups with the XRJoint poses
    					const jointPose = frame.getJointPose( inputjoint, referenceSpace );

    					if ( hand.joints[ inputjoint.jointName ] === undefined ) {

    						// The transform of this joint will be updated with the joint pose on each frame
    						const joint = new Group();
    						joint.matrixAutoUpdate = false;
    						joint.visible = false;
    						hand.joints[ inputjoint.jointName ] = joint;
    						// ??
    						hand.add( joint );

    					}

    					const joint = hand.joints[ inputjoint.jointName ];

    					if ( jointPose !== null ) {

    						joint.matrix.fromArray( jointPose.transform.matrix );
    						joint.matrix.decompose( joint.position, joint.rotation, joint.scale );
    						joint.jointRadius = jointPose.radius;

    					}

    					joint.visible = jointPose !== null;

    				}

    				// Custom events

    				// Check pinchz
    				const indexTip = hand.joints[ 'index-finger-tip' ];
    				const thumbTip = hand.joints[ 'thumb-tip' ];
    				const distance = indexTip.position.distanceTo( thumbTip.position );

    				const distanceToPinch = 0.02;
    				const threshold = 0.005;

    				if ( hand.inputState.pinching && distance > distanceToPinch + threshold ) {

    					hand.inputState.pinching = false;
    					this.dispatchEvent( {
    						type: 'pinchend',
    						handedness: inputSource.handedness,
    						target: this
    					} );

    				} else if ( ! hand.inputState.pinching && distance <= distanceToPinch - threshold ) {

    					hand.inputState.pinching = true;
    					this.dispatchEvent( {
    						type: 'pinchstart',
    						handedness: inputSource.handedness,
    						target: this
    					} );

    				}

    			} else {

    				if ( grip !== null && inputSource.gripSpace ) {

    					gripPose = frame.getPose( inputSource.gripSpace, referenceSpace );

    					if ( gripPose !== null ) {

    						grip.matrix.fromArray( gripPose.transform.matrix );
    						grip.matrix.decompose( grip.position, grip.rotation, grip.scale );

    						if ( gripPose.linearVelocity ) {

    							grip.hasLinearVelocity = true;
    							grip.linearVelocity.copy( gripPose.linearVelocity );

    						} else {

    							grip.hasLinearVelocity = false;

    						}

    						if ( gripPose.angularVelocity ) {

    							grip.hasAngularVelocity = true;
    							grip.angularVelocity.copy( gripPose.angularVelocity );

    						} else {

    							grip.hasAngularVelocity = false;

    						}

    					}

    				}

    			}

    			if ( targetRay !== null ) {

    				inputPose = frame.getPose( inputSource.targetRaySpace, referenceSpace );

    				// Some runtimes (namely Vive Cosmos with Vive OpenXR Runtime) have only grip space and ray space is equal to it
    				if ( inputPose === null && gripPose !== null ) {

    					inputPose = gripPose;

    				}

    				if ( inputPose !== null ) {

    					targetRay.matrix.fromArray( inputPose.transform.matrix );
    					targetRay.matrix.decompose( targetRay.position, targetRay.rotation, targetRay.scale );

    					if ( inputPose.linearVelocity ) {

    						targetRay.hasLinearVelocity = true;
    						targetRay.linearVelocity.copy( inputPose.linearVelocity );

    					} else {

    						targetRay.hasLinearVelocity = false;

    					}

    					if ( inputPose.angularVelocity ) {

    						targetRay.hasAngularVelocity = true;
    						targetRay.angularVelocity.copy( inputPose.angularVelocity );

    					} else {

    						targetRay.hasAngularVelocity = false;

    					}

    					this.dispatchEvent( _moveEvent );

    				}

    			}


    		}

    		if ( targetRay !== null ) {

    			targetRay.visible = ( inputPose !== null );

    		}

    		if ( grip !== null ) {

    			grip.visible = ( gripPose !== null );

    		}

    		if ( hand !== null ) {

    			hand.visible = ( handPose !== null );

    		}

    		return this;

    	}

    }

    class DepthTexture extends Texture {

    	constructor( width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format ) {

    		format = format !== undefined ? format : DepthFormat;

    		if ( format !== DepthFormat && format !== DepthStencilFormat ) {

    			throw new Error( 'DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat' );

    		}

    		if ( type === undefined && format === DepthFormat ) type = UnsignedIntType;
    		if ( type === undefined && format === DepthStencilFormat ) type = UnsignedInt248Type;

    		super( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

    		this.isDepthTexture = true;

    		this.image = { width: width, height: height };

    		this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
    		this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;

    		this.flipY = false;
    		this.generateMipmaps = false;

    	}


    }

    class WebXRManager extends EventDispatcher {

    	constructor( renderer, gl ) {

    		super();

    		const scope = this;

    		let session = null;
    		let framebufferScaleFactor = 1.0;

    		let referenceSpace = null;
    		let referenceSpaceType = 'local-floor';
    		let customReferenceSpace = null;

    		let pose = null;
    		let glBinding = null;
    		let glProjLayer = null;
    		let glBaseLayer = null;
    		let xrFrame = null;
    		const attributes = gl.getContextAttributes();
    		let initialRenderTarget = null;
    		let newRenderTarget = null;

    		const controllers = [];
    		const controllerInputSources = [];

    		//

    		const cameraL = new PerspectiveCamera();
    		cameraL.layers.enable( 1 );
    		cameraL.viewport = new Vector4();

    		const cameraR = new PerspectiveCamera();
    		cameraR.layers.enable( 2 );
    		cameraR.viewport = new Vector4();

    		const cameras = [ cameraL, cameraR ];

    		const cameraVR = new ArrayCamera();
    		cameraVR.layers.enable( 1 );
    		cameraVR.layers.enable( 2 );

    		let _currentDepthNear = null;
    		let _currentDepthFar = null;

    		//

    		this.cameraAutoUpdate = true;
    		this.enabled = false;

    		this.isPresenting = false;

    		this.getController = function ( index ) {

    			let controller = controllers[ index ];

    			if ( controller === undefined ) {

    				controller = new WebXRController();
    				controllers[ index ] = controller;

    			}

    			return controller.getTargetRaySpace();

    		};

    		this.getControllerGrip = function ( index ) {

    			let controller = controllers[ index ];

    			if ( controller === undefined ) {

    				controller = new WebXRController();
    				controllers[ index ] = controller;

    			}

    			return controller.getGripSpace();

    		};

    		this.getHand = function ( index ) {

    			let controller = controllers[ index ];

    			if ( controller === undefined ) {

    				controller = new WebXRController();
    				controllers[ index ] = controller;

    			}

    			return controller.getHandSpace();

    		};

    		//

    		function onSessionEvent( event ) {

    			const controllerIndex = controllerInputSources.indexOf( event.inputSource );

    			if ( controllerIndex === - 1 ) {

    				return;

    			}

    			const controller = controllers[ controllerIndex ];

    			if ( controller !== undefined ) {

    				controller.dispatchEvent( { type: event.type, data: event.inputSource } );

    			}

    		}

    		function onSessionEnd() {

    			session.removeEventListener( 'select', onSessionEvent );
    			session.removeEventListener( 'selectstart', onSessionEvent );
    			session.removeEventListener( 'selectend', onSessionEvent );
    			session.removeEventListener( 'squeeze', onSessionEvent );
    			session.removeEventListener( 'squeezestart', onSessionEvent );
    			session.removeEventListener( 'squeezeend', onSessionEvent );
    			session.removeEventListener( 'end', onSessionEnd );
    			session.removeEventListener( 'inputsourceschange', onInputSourcesChange );

    			for ( let i = 0; i < controllers.length; i ++ ) {

    				const inputSource = controllerInputSources[ i ];

    				if ( inputSource === null ) continue;

    				controllerInputSources[ i ] = null;

    				controllers[ i ].disconnect( inputSource );

    			}

    			_currentDepthNear = null;
    			_currentDepthFar = null;

    			// restore framebuffer/rendering state

    			renderer.setRenderTarget( initialRenderTarget );

    			glBaseLayer = null;
    			glProjLayer = null;
    			glBinding = null;
    			session = null;
    			newRenderTarget = null;

    			//

    			animation.stop();

    			scope.isPresenting = false;

    			scope.dispatchEvent( { type: 'sessionend' } );

    		}

    		this.setFramebufferScaleFactor = function ( value ) {

    			framebufferScaleFactor = value;

    			if ( scope.isPresenting === true ) {

    				console.warn( 'THREE.WebXRManager: Cannot change framebuffer scale while presenting.' );

    			}

    		};

    		this.setReferenceSpaceType = function ( value ) {

    			referenceSpaceType = value;

    			if ( scope.isPresenting === true ) {

    				console.warn( 'THREE.WebXRManager: Cannot change reference space type while presenting.' );

    			}

    		};

    		this.getReferenceSpace = function () {

    			return customReferenceSpace || referenceSpace;

    		};

    		this.setReferenceSpace = function ( space ) {

    			customReferenceSpace = space;

    		};

    		this.getBaseLayer = function () {

    			return glProjLayer !== null ? glProjLayer : glBaseLayer;

    		};

    		this.getBinding = function () {

    			return glBinding;

    		};

    		this.getFrame = function () {

    			return xrFrame;

    		};

    		this.getSession = function () {

    			return session;

    		};

    		this.setSession = async function ( value ) {

    			session = value;

    			if ( session !== null ) {

    				initialRenderTarget = renderer.getRenderTarget();

    				session.addEventListener( 'select', onSessionEvent );
    				session.addEventListener( 'selectstart', onSessionEvent );
    				session.addEventListener( 'selectend', onSessionEvent );
    				session.addEventListener( 'squeeze', onSessionEvent );
    				session.addEventListener( 'squeezestart', onSessionEvent );
    				session.addEventListener( 'squeezeend', onSessionEvent );
    				session.addEventListener( 'end', onSessionEnd );
    				session.addEventListener( 'inputsourceschange', onInputSourcesChange );

    				if ( attributes.xrCompatible !== true ) {

    					await gl.makeXRCompatible();

    				}

    				if ( ( session.renderState.layers === undefined ) || ( renderer.capabilities.isWebGL2 === false ) ) {

    					const layerInit = {
    						antialias: ( session.renderState.layers === undefined ) ? attributes.antialias : true,
    						alpha: attributes.alpha,
    						depth: attributes.depth,
    						stencil: attributes.stencil,
    						framebufferScaleFactor: framebufferScaleFactor
    					};

    					glBaseLayer = new XRWebGLLayer( session, gl, layerInit );

    					session.updateRenderState( { baseLayer: glBaseLayer } );

    					newRenderTarget = new WebGLRenderTarget(
    						glBaseLayer.framebufferWidth,
    						glBaseLayer.framebufferHeight,
    						{
    							format: RGBAFormat,
    							type: UnsignedByteType,
    							encoding: renderer.outputEncoding,
    							stencilBuffer: attributes.stencil
    						}
    					);

    				} else {

    					let depthFormat = null;
    					let depthType = null;
    					let glDepthFormat = null;

    					if ( attributes.depth ) {

    						glDepthFormat = attributes.stencil ? 35056 : 33190;
    						depthFormat = attributes.stencil ? DepthStencilFormat : DepthFormat;
    						depthType = attributes.stencil ? UnsignedInt248Type : UnsignedIntType;

    					}

    					const projectionlayerInit = {
    						colorFormat: 32856,
    						depthFormat: glDepthFormat,
    						scaleFactor: framebufferScaleFactor
    					};

    					glBinding = new XRWebGLBinding( session, gl );

    					glProjLayer = glBinding.createProjectionLayer( projectionlayerInit );

    					session.updateRenderState( { layers: [ glProjLayer ] } );

    					newRenderTarget = new WebGLRenderTarget(
    						glProjLayer.textureWidth,
    						glProjLayer.textureHeight,
    						{
    							format: RGBAFormat,
    							type: UnsignedByteType,
    							depthTexture: new DepthTexture( glProjLayer.textureWidth, glProjLayer.textureHeight, depthType, undefined, undefined, undefined, undefined, undefined, undefined, depthFormat ),
    							stencilBuffer: attributes.stencil,
    							encoding: renderer.outputEncoding,
    							samples: attributes.antialias ? 4 : 0
    						} );

    					const renderTargetProperties = renderer.properties.get( newRenderTarget );
    					renderTargetProperties.__ignoreDepthValues = glProjLayer.ignoreDepthValues;

    				}

    				newRenderTarget.isXRRenderTarget = true; // TODO Remove this when possible, see #23278

    				// Set foveation to maximum.
    				this.setFoveation( 1.0 );

    				customReferenceSpace = null;
    				referenceSpace = await session.requestReferenceSpace( referenceSpaceType );

    				animation.setContext( session );
    				animation.start();

    				scope.isPresenting = true;

    				scope.dispatchEvent( { type: 'sessionstart' } );

    			}

    		};

    		function onInputSourcesChange( event ) {

    			// Notify disconnected

    			for ( let i = 0; i < event.removed.length; i ++ ) {

    				const inputSource = event.removed[ i ];
    				const index = controllerInputSources.indexOf( inputSource );

    				if ( index >= 0 ) {

    					controllerInputSources[ index ] = null;
    					controllers[ index ].dispatchEvent( { type: 'disconnected', data: inputSource } );

    				}

    			}

    			// Notify connected

    			for ( let i = 0; i < event.added.length; i ++ ) {

    				const inputSource = event.added[ i ];

    				let controllerIndex = controllerInputSources.indexOf( inputSource );

    				if ( controllerIndex === - 1 ) {

    					// Assign input source a controller that currently has no input source

    					for ( let i = 0; i < controllers.length; i ++ ) {

    						if ( i >= controllerInputSources.length ) {

    							controllerInputSources.push( inputSource );
    							controllerIndex = i;
    							break;

    						} else if ( controllerInputSources[ i ] === null ) {

    							controllerInputSources[ i ] = inputSource;
    							controllerIndex = i;
    							break;

    						}

    					}

    					// If all controllers do currently receive input we ignore new ones

    					if ( controllerIndex === - 1 ) break;

    				}

    				const controller = controllers[ controllerIndex ];

    				if ( controller ) {

    					controller.dispatchEvent( { type: 'connected', data: inputSource } );

    				}

    			}

    		}

    		//

    		const cameraLPos = new Vector3();
    		const cameraRPos = new Vector3();

    		/**
    		 * Assumes 2 cameras that are parallel and share an X-axis, and that
    		 * the cameras' projection and world matrices have already been set.
    		 * And that near and far planes are identical for both cameras.
    		 * Visualization of this technique: https://computergraphics.stackexchange.com/a/4765
    		 */
    		function setProjectionFromUnion( camera, cameraL, cameraR ) {

    			cameraLPos.setFromMatrixPosition( cameraL.matrixWorld );
    			cameraRPos.setFromMatrixPosition( cameraR.matrixWorld );

    			const ipd = cameraLPos.distanceTo( cameraRPos );

    			const projL = cameraL.projectionMatrix.elements;
    			const projR = cameraR.projectionMatrix.elements;

    			// VR systems will have identical far and near planes, and
    			// most likely identical top and bottom frustum extents.
    			// Use the left camera for these values.
    			const near = projL[ 14 ] / ( projL[ 10 ] - 1 );
    			const far = projL[ 14 ] / ( projL[ 10 ] + 1 );
    			const topFov = ( projL[ 9 ] + 1 ) / projL[ 5 ];
    			const bottomFov = ( projL[ 9 ] - 1 ) / projL[ 5 ];

    			const leftFov = ( projL[ 8 ] - 1 ) / projL[ 0 ];
    			const rightFov = ( projR[ 8 ] + 1 ) / projR[ 0 ];
    			const left = near * leftFov;
    			const right = near * rightFov;

    			// Calculate the new camera's position offset from the
    			// left camera. xOffset should be roughly half `ipd`.
    			const zOffset = ipd / ( - leftFov + rightFov );
    			const xOffset = zOffset * - leftFov;

    			// TODO: Better way to apply this offset?
    			cameraL.matrixWorld.decompose( camera.position, camera.quaternion, camera.scale );
    			camera.translateX( xOffset );
    			camera.translateZ( zOffset );
    			camera.matrixWorld.compose( camera.position, camera.quaternion, camera.scale );
    			camera.matrixWorldInverse.copy( camera.matrixWorld ).invert();

    			// Find the union of the frustum values of the cameras and scale
    			// the values so that the near plane's position does not change in world space,
    			// although must now be relative to the new union camera.
    			const near2 = near + zOffset;
    			const far2 = far + zOffset;
    			const left2 = left - xOffset;
    			const right2 = right + ( ipd - xOffset );
    			const top2 = topFov * far / far2 * near2;
    			const bottom2 = bottomFov * far / far2 * near2;

    			camera.projectionMatrix.makePerspective( left2, right2, top2, bottom2, near2, far2 );

    		}

    		function updateCamera( camera, parent ) {

    			if ( parent === null ) {

    				camera.matrixWorld.copy( camera.matrix );

    			} else {

    				camera.matrixWorld.multiplyMatrices( parent.matrixWorld, camera.matrix );

    			}

    			camera.matrixWorldInverse.copy( camera.matrixWorld ).invert();

    		}

    		this.updateCamera = function ( camera ) {

    			if ( session === null ) return;

    			cameraVR.near = cameraR.near = cameraL.near = camera.near;
    			cameraVR.far = cameraR.far = cameraL.far = camera.far;

    			if ( _currentDepthNear !== cameraVR.near || _currentDepthFar !== cameraVR.far ) {

    				// Note that the new renderState won't apply until the next frame. See #18320

    				session.updateRenderState( {
    					depthNear: cameraVR.near,
    					depthFar: cameraVR.far
    				} );

    				_currentDepthNear = cameraVR.near;
    				_currentDepthFar = cameraVR.far;

    			}

    			const parent = camera.parent;
    			const cameras = cameraVR.cameras;

    			updateCamera( cameraVR, parent );

    			for ( let i = 0; i < cameras.length; i ++ ) {

    				updateCamera( cameras[ i ], parent );

    			}

    			cameraVR.matrixWorld.decompose( cameraVR.position, cameraVR.quaternion, cameraVR.scale );

    			// update user camera and its children

    			camera.matrix.copy( cameraVR.matrix );
    			camera.matrix.decompose( camera.position, camera.quaternion, camera.scale );

    			const children = camera.children;

    			for ( let i = 0, l = children.length; i < l; i ++ ) {

    				children[ i ].updateMatrixWorld( true );

    			}

    			// update projection matrix for proper view frustum culling

    			if ( cameras.length === 2 ) {

    				setProjectionFromUnion( cameraVR, cameraL, cameraR );

    			} else {

    				// assume single camera setup (AR)

    				cameraVR.projectionMatrix.copy( cameraL.projectionMatrix );

    			}

    		};

    		this.getCamera = function () {

    			return cameraVR;

    		};

    		this.getFoveation = function () {

    			if ( glProjLayer !== null ) {

    				return glProjLayer.fixedFoveation;

    			}

    			if ( glBaseLayer !== null ) {

    				return glBaseLayer.fixedFoveation;

    			}

    			return undefined;

    		};

    		this.setFoveation = function ( foveation ) {

    			// 0 = no foveation = full resolution
    			// 1 = maximum foveation = the edges render at lower resolution

    			if ( glProjLayer !== null ) {

    				glProjLayer.fixedFoveation = foveation;

    			}

    			if ( glBaseLayer !== null && glBaseLayer.fixedFoveation !== undefined ) {

    				glBaseLayer.fixedFoveation = foveation;

    			}

    		};

    		// Animation Loop

    		let onAnimationFrameCallback = null;

    		function onAnimationFrame( time, frame ) {

    			pose = frame.getViewerPose( customReferenceSpace || referenceSpace );
    			xrFrame = frame;

    			if ( pose !== null ) {

    				const views = pose.views;

    				if ( glBaseLayer !== null ) {

    					renderer.setRenderTargetFramebuffer( newRenderTarget, glBaseLayer.framebuffer );
    					renderer.setRenderTarget( newRenderTarget );

    				}

    				let cameraVRNeedsUpdate = false;

    				// check if it's necessary to rebuild cameraVR's camera list

    				if ( views.length !== cameraVR.cameras.length ) {

    					cameraVR.cameras.length = 0;
    					cameraVRNeedsUpdate = true;

    				}

    				for ( let i = 0; i < views.length; i ++ ) {

    					const view = views[ i ];

    					let viewport = null;

    					if ( glBaseLayer !== null ) {

    						viewport = glBaseLayer.getViewport( view );

    					} else {

    						const glSubImage = glBinding.getViewSubImage( glProjLayer, view );
    						viewport = glSubImage.viewport;

    						// For side-by-side projection, we only produce a single texture for both eyes.
    						if ( i === 0 ) {

    							renderer.setRenderTargetTextures(
    								newRenderTarget,
    								glSubImage.colorTexture,
    								glProjLayer.ignoreDepthValues ? undefined : glSubImage.depthStencilTexture );

    							renderer.setRenderTarget( newRenderTarget );

    						}

    					}

    					let camera = cameras[ i ];

    					if ( camera === undefined ) {

    						camera = new PerspectiveCamera();
    						camera.layers.enable( i );
    						camera.viewport = new Vector4();
    						cameras[ i ] = camera;

    					}

    					camera.matrix.fromArray( view.transform.matrix );
    					camera.projectionMatrix.fromArray( view.projectionMatrix );
    					camera.viewport.set( viewport.x, viewport.y, viewport.width, viewport.height );

    					if ( i === 0 ) {

    						cameraVR.matrix.copy( camera.matrix );

    					}

    					if ( cameraVRNeedsUpdate === true ) {

    						cameraVR.cameras.push( camera );

    					}

    				}

    			}

    			//

    			for ( let i = 0; i < controllers.length; i ++ ) {

    				const inputSource = controllerInputSources[ i ];
    				const controller = controllers[ i ];

    				if ( inputSource !== null && controller !== undefined ) {

    					controller.update( inputSource, frame, customReferenceSpace || referenceSpace );

    				}

    			}

    			if ( onAnimationFrameCallback ) onAnimationFrameCallback( time, frame );

    			xrFrame = null;

    		}

    		const animation = new WebGLAnimation();

    		animation.setAnimationLoop( onAnimationFrame );

    		this.setAnimationLoop = function ( callback ) {

    			onAnimationFrameCallback = callback;

    		};

    		this.dispose = function () {};

    	}

    }

    function WebGLMaterials( renderer, properties ) {

    	function refreshFogUniforms( uniforms, fog ) {

    		uniforms.fogColor.value.copy( fog.color );

    		if ( fog.isFog ) {

    			uniforms.fogNear.value = fog.near;
    			uniforms.fogFar.value = fog.far;

    		} else if ( fog.isFogExp2 ) {

    			uniforms.fogDensity.value = fog.density;

    		}

    	}

    	function refreshMaterialUniforms( uniforms, material, pixelRatio, height, transmissionRenderTarget ) {

    		if ( material.isMeshBasicMaterial ) {

    			refreshUniformsCommon( uniforms, material );

    		} else if ( material.isMeshLambertMaterial ) {

    			refreshUniformsCommon( uniforms, material );

    		} else if ( material.isMeshToonMaterial ) {

    			refreshUniformsCommon( uniforms, material );
    			refreshUniformsToon( uniforms, material );

    		} else if ( material.isMeshPhongMaterial ) {

    			refreshUniformsCommon( uniforms, material );
    			refreshUniformsPhong( uniforms, material );

    		} else if ( material.isMeshStandardMaterial ) {

    			refreshUniformsCommon( uniforms, material );
    			refreshUniformsStandard( uniforms, material );

    			if ( material.isMeshPhysicalMaterial ) {

    				refreshUniformsPhysical( uniforms, material, transmissionRenderTarget );

    			}

    		} else if ( material.isMeshMatcapMaterial ) {

    			refreshUniformsCommon( uniforms, material );
    			refreshUniformsMatcap( uniforms, material );

    		} else if ( material.isMeshDepthMaterial ) {

    			refreshUniformsCommon( uniforms, material );

    		} else if ( material.isMeshDistanceMaterial ) {

    			refreshUniformsCommon( uniforms, material );
    			refreshUniformsDistance( uniforms, material );

    		} else if ( material.isMeshNormalMaterial ) {

    			refreshUniformsCommon( uniforms, material );

    		} else if ( material.isLineBasicMaterial ) {

    			refreshUniformsLine( uniforms, material );

    			if ( material.isLineDashedMaterial ) {

    				refreshUniformsDash( uniforms, material );

    			}

    		} else if ( material.isPointsMaterial ) {

    			refreshUniformsPoints( uniforms, material, pixelRatio, height );

    		} else if ( material.isSpriteMaterial ) {

    			refreshUniformsSprites( uniforms, material );

    		} else if ( material.isShadowMaterial ) {

    			uniforms.color.value.copy( material.color );
    			uniforms.opacity.value = material.opacity;

    		} else if ( material.isShaderMaterial ) {

    			material.uniformsNeedUpdate = false; // #15581

    		}

    	}

    	function refreshUniformsCommon( uniforms, material ) {

    		uniforms.opacity.value = material.opacity;

    		if ( material.color ) {

    			uniforms.diffuse.value.copy( material.color );

    		}

    		if ( material.emissive ) {

    			uniforms.emissive.value.copy( material.emissive ).multiplyScalar( material.emissiveIntensity );

    		}

    		if ( material.map ) {

    			uniforms.map.value = material.map;

    		}

    		if ( material.alphaMap ) {

    			uniforms.alphaMap.value = material.alphaMap;

    		}

    		if ( material.bumpMap ) {

    			uniforms.bumpMap.value = material.bumpMap;
    			uniforms.bumpScale.value = material.bumpScale;
    			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;

    		}

    		if ( material.displacementMap ) {

    			uniforms.displacementMap.value = material.displacementMap;
    			uniforms.displacementScale.value = material.displacementScale;
    			uniforms.displacementBias.value = material.displacementBias;

    		}

    		if ( material.emissiveMap ) {

    			uniforms.emissiveMap.value = material.emissiveMap;

    		}

    		if ( material.normalMap ) {

    			uniforms.normalMap.value = material.normalMap;
    			uniforms.normalScale.value.copy( material.normalScale );
    			if ( material.side === BackSide ) uniforms.normalScale.value.negate();

    		}

    		if ( material.specularMap ) {

    			uniforms.specularMap.value = material.specularMap;

    		}

    		if ( material.alphaTest > 0 ) {

    			uniforms.alphaTest.value = material.alphaTest;

    		}

    		const envMap = properties.get( material ).envMap;

    		if ( envMap ) {

    			uniforms.envMap.value = envMap;

    			uniforms.flipEnvMap.value = ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) ? - 1 : 1;

    			uniforms.reflectivity.value = material.reflectivity;
    			uniforms.ior.value = material.ior;
    			uniforms.refractionRatio.value = material.refractionRatio;

    		}

    		if ( material.lightMap ) {

    			uniforms.lightMap.value = material.lightMap;

    			// artist-friendly light intensity scaling factor
    			const scaleFactor = ( renderer.physicallyCorrectLights !== true ) ? Math.PI : 1;

    			uniforms.lightMapIntensity.value = material.lightMapIntensity * scaleFactor;

    		}

    		if ( material.aoMap ) {

    			uniforms.aoMap.value = material.aoMap;
    			uniforms.aoMapIntensity.value = material.aoMapIntensity;

    		}

    		// uv repeat and offset setting priorities
    		// 1. color map
    		// 2. specular map
    		// 3. displacementMap map
    		// 4. normal map
    		// 5. bump map
    		// 6. roughnessMap map
    		// 7. metalnessMap map
    		// 8. alphaMap map
    		// 9. emissiveMap map
    		// 10. clearcoat map
    		// 11. clearcoat normal map
    		// 12. clearcoat roughnessMap map
    		// 13. iridescence map
    		// 14. iridescence thickness map
    		// 15. specular intensity map
    		// 16. specular tint map
    		// 17. transmission map
    		// 18. thickness map

    		let uvScaleMap;

    		if ( material.map ) {

    			uvScaleMap = material.map;

    		} else if ( material.specularMap ) {

    			uvScaleMap = material.specularMap;

    		} else if ( material.displacementMap ) {

    			uvScaleMap = material.displacementMap;

    		} else if ( material.normalMap ) {

    			uvScaleMap = material.normalMap;

    		} else if ( material.bumpMap ) {

    			uvScaleMap = material.bumpMap;

    		} else if ( material.roughnessMap ) {

    			uvScaleMap = material.roughnessMap;

    		} else if ( material.metalnessMap ) {

    			uvScaleMap = material.metalnessMap;

    		} else if ( material.alphaMap ) {

    			uvScaleMap = material.alphaMap;

    		} else if ( material.emissiveMap ) {

    			uvScaleMap = material.emissiveMap;

    		} else if ( material.clearcoatMap ) {

    			uvScaleMap = material.clearcoatMap;

    		} else if ( material.clearcoatNormalMap ) {

    			uvScaleMap = material.clearcoatNormalMap;

    		} else if ( material.clearcoatRoughnessMap ) {

    			uvScaleMap = material.clearcoatRoughnessMap;

    		} else if ( material.iridescenceMap ) {

    			uvScaleMap = material.iridescenceMap;

    		} else if ( material.iridescenceThicknessMap ) {

    			uvScaleMap = material.iridescenceThicknessMap;

    		} else if ( material.specularIntensityMap ) {

    			uvScaleMap = material.specularIntensityMap;

    		} else if ( material.specularColorMap ) {

    			uvScaleMap = material.specularColorMap;

    		} else if ( material.transmissionMap ) {

    			uvScaleMap = material.transmissionMap;

    		} else if ( material.thicknessMap ) {

    			uvScaleMap = material.thicknessMap;

    		} else if ( material.sheenColorMap ) {

    			uvScaleMap = material.sheenColorMap;

    		} else if ( material.sheenRoughnessMap ) {

    			uvScaleMap = material.sheenRoughnessMap;

    		}

    		if ( uvScaleMap !== undefined ) {

    			// backwards compatibility
    			if ( uvScaleMap.isWebGLRenderTarget ) {

    				uvScaleMap = uvScaleMap.texture;

    			}

    			if ( uvScaleMap.matrixAutoUpdate === true ) {

    				uvScaleMap.updateMatrix();

    			}

    			uniforms.uvTransform.value.copy( uvScaleMap.matrix );

    		}

    		// uv repeat and offset setting priorities for uv2
    		// 1. ao map
    		// 2. light map

    		let uv2ScaleMap;

    		if ( material.aoMap ) {

    			uv2ScaleMap = material.aoMap;

    		} else if ( material.lightMap ) {

    			uv2ScaleMap = material.lightMap;

    		}

    		if ( uv2ScaleMap !== undefined ) {

    			// backwards compatibility
    			if ( uv2ScaleMap.isWebGLRenderTarget ) {

    				uv2ScaleMap = uv2ScaleMap.texture;

    			}

    			if ( uv2ScaleMap.matrixAutoUpdate === true ) {

    				uv2ScaleMap.updateMatrix();

    			}

    			uniforms.uv2Transform.value.copy( uv2ScaleMap.matrix );

    		}

    	}

    	function refreshUniformsLine( uniforms, material ) {

    		uniforms.diffuse.value.copy( material.color );
    		uniforms.opacity.value = material.opacity;

    	}

    	function refreshUniformsDash( uniforms, material ) {

    		uniforms.dashSize.value = material.dashSize;
    		uniforms.totalSize.value = material.dashSize + material.gapSize;
    		uniforms.scale.value = material.scale;

    	}

    	function refreshUniformsPoints( uniforms, material, pixelRatio, height ) {

    		uniforms.diffuse.value.copy( material.color );
    		uniforms.opacity.value = material.opacity;
    		uniforms.size.value = material.size * pixelRatio;
    		uniforms.scale.value = height * 0.5;

    		if ( material.map ) {

    			uniforms.map.value = material.map;

    		}

    		if ( material.alphaMap ) {

    			uniforms.alphaMap.value = material.alphaMap;

    		}

    		if ( material.alphaTest > 0 ) {

    			uniforms.alphaTest.value = material.alphaTest;

    		}

    		// uv repeat and offset setting priorities
    		// 1. color map
    		// 2. alpha map

    		let uvScaleMap;

    		if ( material.map ) {

    			uvScaleMap = material.map;

    		} else if ( material.alphaMap ) {

    			uvScaleMap = material.alphaMap;

    		}

    		if ( uvScaleMap !== undefined ) {

    			if ( uvScaleMap.matrixAutoUpdate === true ) {

    				uvScaleMap.updateMatrix();

    			}

    			uniforms.uvTransform.value.copy( uvScaleMap.matrix );

    		}

    	}

    	function refreshUniformsSprites( uniforms, material ) {

    		uniforms.diffuse.value.copy( material.color );
    		uniforms.opacity.value = material.opacity;
    		uniforms.rotation.value = material.rotation;

    		if ( material.map ) {

    			uniforms.map.value = material.map;

    		}

    		if ( material.alphaMap ) {

    			uniforms.alphaMap.value = material.alphaMap;

    		}

    		if ( material.alphaTest > 0 ) {

    			uniforms.alphaTest.value = material.alphaTest;

    		}

    		// uv repeat and offset setting priorities
    		// 1. color map
    		// 2. alpha map

    		let uvScaleMap;

    		if ( material.map ) {

    			uvScaleMap = material.map;

    		} else if ( material.alphaMap ) {

    			uvScaleMap = material.alphaMap;

    		}

    		if ( uvScaleMap !== undefined ) {

    			if ( uvScaleMap.matrixAutoUpdate === true ) {

    				uvScaleMap.updateMatrix();

    			}

    			uniforms.uvTransform.value.copy( uvScaleMap.matrix );

    		}

    	}

    	function refreshUniformsPhong( uniforms, material ) {

    		uniforms.specular.value.copy( material.specular );
    		uniforms.shininess.value = Math.max( material.shininess, 1e-4 ); // to prevent pow( 0.0, 0.0 )

    	}

    	function refreshUniformsToon( uniforms, material ) {

    		if ( material.gradientMap ) {

    			uniforms.gradientMap.value = material.gradientMap;

    		}

    	}

    	function refreshUniformsStandard( uniforms, material ) {

    		uniforms.roughness.value = material.roughness;
    		uniforms.metalness.value = material.metalness;

    		if ( material.roughnessMap ) {

    			uniforms.roughnessMap.value = material.roughnessMap;

    		}

    		if ( material.metalnessMap ) {

    			uniforms.metalnessMap.value = material.metalnessMap;

    		}

    		const envMap = properties.get( material ).envMap;

    		if ( envMap ) {

    			//uniforms.envMap.value = material.envMap; // part of uniforms common
    			uniforms.envMapIntensity.value = material.envMapIntensity;

    		}

    	}

    	function refreshUniformsPhysical( uniforms, material, transmissionRenderTarget ) {

    		uniforms.ior.value = material.ior; // also part of uniforms common

    		if ( material.sheen > 0 ) {

    			uniforms.sheenColor.value.copy( material.sheenColor ).multiplyScalar( material.sheen );

    			uniforms.sheenRoughness.value = material.sheenRoughness;

    			if ( material.sheenColorMap ) {

    				uniforms.sheenColorMap.value = material.sheenColorMap;

    			}

    			if ( material.sheenRoughnessMap ) {

    				uniforms.sheenRoughnessMap.value = material.sheenRoughnessMap;

    			}

    		}

    		if ( material.clearcoat > 0 ) {

    			uniforms.clearcoat.value = material.clearcoat;
    			uniforms.clearcoatRoughness.value = material.clearcoatRoughness;

    			if ( material.clearcoatMap ) {

    				uniforms.clearcoatMap.value = material.clearcoatMap;

    			}

    			if ( material.clearcoatRoughnessMap ) {

    				uniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;

    			}

    			if ( material.clearcoatNormalMap ) {

    				uniforms.clearcoatNormalScale.value.copy( material.clearcoatNormalScale );
    				uniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;

    				if ( material.side === BackSide ) {

    					uniforms.clearcoatNormalScale.value.negate();

    				}

    			}

    		}

    		if ( material.iridescence > 0 ) {

    			uniforms.iridescence.value = material.iridescence;
    			uniforms.iridescenceIOR.value = material.iridescenceIOR;
    			uniforms.iridescenceThicknessMinimum.value = material.iridescenceThicknessRange[ 0 ];
    			uniforms.iridescenceThicknessMaximum.value = material.iridescenceThicknessRange[ 1 ];

    			if ( material.iridescenceMap ) {

    				uniforms.iridescenceMap.value = material.iridescenceMap;

    			}

    			if ( material.iridescenceThicknessMap ) {

    				uniforms.iridescenceThicknessMap.value = material.iridescenceThicknessMap;

    			}

    		}

    		if ( material.transmission > 0 ) {

    			uniforms.transmission.value = material.transmission;
    			uniforms.transmissionSamplerMap.value = transmissionRenderTarget.texture;
    			uniforms.transmissionSamplerSize.value.set( transmissionRenderTarget.width, transmissionRenderTarget.height );

    			if ( material.transmissionMap ) {

    				uniforms.transmissionMap.value = material.transmissionMap;

    			}

    			uniforms.thickness.value = material.thickness;

    			if ( material.thicknessMap ) {

    				uniforms.thicknessMap.value = material.thicknessMap;

    			}

    			uniforms.attenuationDistance.value = material.attenuationDistance;
    			uniforms.attenuationColor.value.copy( material.attenuationColor );

    		}

    		uniforms.specularIntensity.value = material.specularIntensity;
    		uniforms.specularColor.value.copy( material.specularColor );

    		if ( material.specularIntensityMap ) {

    			uniforms.specularIntensityMap.value = material.specularIntensityMap;

    		}

    		if ( material.specularColorMap ) {

    			uniforms.specularColorMap.value = material.specularColorMap;

    		}

    	}

    	function refreshUniformsMatcap( uniforms, material ) {

    		if ( material.matcap ) {

    			uniforms.matcap.value = material.matcap;

    		}

    	}

    	function refreshUniformsDistance( uniforms, material ) {

    		uniforms.referencePosition.value.copy( material.referencePosition );
    		uniforms.nearDistance.value = material.nearDistance;
    		uniforms.farDistance.value = material.farDistance;

    	}

    	return {
    		refreshFogUniforms: refreshFogUniforms,
    		refreshMaterialUniforms: refreshMaterialUniforms
    	};

    }

    function WebGLUniformsGroups( gl, info, capabilities, state ) {

    	let buffers = {};
    	let updateList = {};
    	let allocatedBindingPoints = [];

    	const maxBindingPoints = ( capabilities.isWebGL2 ) ? gl.getParameter( 35375 ) : 0; // binding points are global whereas block indices are per shader program

    	function bind( uniformsGroup, program ) {

    		const webglProgram = program.program;
    		state.uniformBlockBinding( uniformsGroup, webglProgram );

    	}

    	function update( uniformsGroup, program ) {

    		let buffer = buffers[ uniformsGroup.id ];

    		if ( buffer === undefined ) {

    			prepareUniformsGroup( uniformsGroup );

    			buffer = createBuffer( uniformsGroup );
    			buffers[ uniformsGroup.id ] = buffer;

    			uniformsGroup.addEventListener( 'dispose', onUniformsGroupsDispose );

    		}

    		// ensure to update the binding points/block indices mapping for this program

    		const webglProgram = program.program;
    		state.updateUBOMapping( uniformsGroup, webglProgram );

    		// update UBO once per frame

    		const frame = info.render.frame;

    		if ( updateList[ uniformsGroup.id ] !== frame ) {

    			updateBufferData( uniformsGroup );

    			updateList[ uniformsGroup.id ] = frame;

    		}

    	}

    	function createBuffer( uniformsGroup ) {

    		// the setup of an UBO is independent of a particular shader program but global

    		const bindingPointIndex = allocateBindingPointIndex();
    		uniformsGroup.__bindingPointIndex = bindingPointIndex;

    		const buffer = gl.createBuffer();
    		const size = uniformsGroup.__size;
    		const usage = uniformsGroup.usage;

    		gl.bindBuffer( 35345, buffer );
    		gl.bufferData( 35345, size, usage );
    		gl.bindBuffer( 35345, null );
    		gl.bindBufferBase( 35345, bindingPointIndex, buffer );

    		return buffer;

    	}

    	function allocateBindingPointIndex() {

    		for ( let i = 0; i < maxBindingPoints; i ++ ) {

    			if ( allocatedBindingPoints.indexOf( i ) === - 1 ) {

    				allocatedBindingPoints.push( i );
    				return i;

    			}

    		}

    		console.error( 'THREE.WebGLRenderer: Maximum number of simultaneously usable uniforms groups reached.' );

    		return 0;

    	}

    	function updateBufferData( uniformsGroup ) {

    		const buffer = buffers[ uniformsGroup.id ];
    		const uniforms = uniformsGroup.uniforms;
    		const cache = uniformsGroup.__cache;

    		gl.bindBuffer( 35345, buffer );

    		for ( let i = 0, il = uniforms.length; i < il; i ++ ) {

    			const uniform = uniforms[ i ];

    			// partly update the buffer if necessary

    			if ( hasUniformChanged( uniform, i, cache ) === true ) {

    				const value = uniform.value;
    				const offset = uniform.__offset;

    				if ( typeof value === 'number' ) {

    					uniform.__data[ 0 ] = value;
    					gl.bufferSubData( 35345, offset, uniform.__data );

    				} else {

    					if ( uniform.value.isMatrix3 ) {

    						// manually converting 3x3 to 3x4

    						uniform.__data[ 0 ] = uniform.value.elements[ 0 ];
    						uniform.__data[ 1 ] = uniform.value.elements[ 1 ];
    						uniform.__data[ 2 ] = uniform.value.elements[ 2 ];
    						uniform.__data[ 3 ] = uniform.value.elements[ 0 ];
    						uniform.__data[ 4 ] = uniform.value.elements[ 3 ];
    						uniform.__data[ 5 ] = uniform.value.elements[ 4 ];
    						uniform.__data[ 6 ] = uniform.value.elements[ 5 ];
    						uniform.__data[ 7 ] = uniform.value.elements[ 0 ];
    						uniform.__data[ 8 ] = uniform.value.elements[ 6 ];
    						uniform.__data[ 9 ] = uniform.value.elements[ 7 ];
    						uniform.__data[ 10 ] = uniform.value.elements[ 8 ];
    						uniform.__data[ 11 ] = uniform.value.elements[ 0 ];

    					} else {

    						value.toArray( uniform.__data );

    					}

    					gl.bufferSubData( 35345, offset, uniform.__data );

    				}

    			}

    		}

    		gl.bindBuffer( 35345, null );

    	}

    	function hasUniformChanged( uniform, index, cache ) {

    		const value = uniform.value;

    		if ( cache[ index ] === undefined ) {

    			// cache entry does not exist so far

    			if ( typeof value === 'number' ) {

    				cache[ index ] = value;

    			} else {

    				cache[ index ] = value.clone();

    			}

    			return true;

    		} else {

    			// compare current value with cached entry

    			if ( typeof value === 'number' ) {

    				if ( cache[ index ] !== value ) {

    					cache[ index ] = value;
    					return true;

    				}

    			} else {

    				const cachedObject = cache[ index ];

    				if ( cachedObject.equals( value ) === false ) {

    					cachedObject.copy( value );
    					return true;

    				}

    			}

    		}

    		return false;

    	}

    	function prepareUniformsGroup( uniformsGroup ) {

    		// determine total buffer size according to the STD140 layout
    		// Hint: STD140 is the only supported layout in WebGL 2

    		const uniforms = uniformsGroup.uniforms;

    		let offset = 0; // global buffer offset in bytes
    		const chunkSize = 16; // size of a chunk in bytes
    		let chunkOffset = 0; // offset within a single chunk in bytes

    		for ( let i = 0, l = uniforms.length; i < l; i ++ ) {

    			const uniform = uniforms[ i ];
    			const info = getUniformSize( uniform );

    			// the following two properties will be used for partial buffer updates

    			uniform.__data = new Float32Array( info.storage / Float32Array.BYTES_PER_ELEMENT );
    			uniform.__offset = offset;

    			//

    			if ( i > 0 ) {

    				chunkOffset = offset % chunkSize;

    				const remainingSizeInChunk = chunkSize - chunkOffset;

    				// check for chunk overflow

    				if ( chunkOffset !== 0 && ( remainingSizeInChunk - info.boundary ) < 0 ) {

    					// add padding and adjust offset

    					offset += ( chunkSize - chunkOffset );
    					uniform.__offset = offset;

    				}

    			}

    			offset += info.storage;

    		}

    		// ensure correct final padding

    		chunkOffset = offset % chunkSize;

    		if ( chunkOffset > 0 ) offset += ( chunkSize - chunkOffset );

    		//

    		uniformsGroup.__size = offset;
    		uniformsGroup.__cache = {};

    		return this;

    	}

    	function getUniformSize( uniform ) {

    		const value = uniform.value;

    		const info = {
    			boundary: 0, // bytes
    			storage: 0 // bytes
    		};

    		// determine sizes according to STD140

    		if ( typeof value === 'number' ) {

    			// float/int

    			info.boundary = 4;
    			info.storage = 4;

    		} else if ( value.isVector2 ) {

    			// vec2

    			info.boundary = 8;
    			info.storage = 8;

    		} else if ( value.isVector3 || value.isColor ) {

    			// vec3

    			info.boundary = 16;
    			info.storage = 12; // evil: vec3 must start on a 16-byte boundary but it only consumes 12 bytes

    		} else if ( value.isVector4 ) {

    			// vec4

    			info.boundary = 16;
    			info.storage = 16;

    		} else if ( value.isMatrix3 ) {

    			// mat3 (in STD140 a 3x3 matrix is represented as 3x4)

    			info.boundary = 48;
    			info.storage = 48;

    		} else if ( value.isMatrix4 ) {

    			// mat4

    			info.boundary = 64;
    			info.storage = 64;

    		} else if ( value.isTexture ) {

    			console.warn( 'THREE.WebGLRenderer: Texture samplers can not be part of an uniforms group.' );

    		} else {

    			console.warn( 'THREE.WebGLRenderer: Unsupported uniform value type.', value );

    		}

    		return info;

    	}

    	function onUniformsGroupsDispose( event ) {

    		const uniformsGroup = event.target;

    		uniformsGroup.removeEventListener( 'dispose', onUniformsGroupsDispose );

    		const index = allocatedBindingPoints.indexOf( uniformsGroup.__bindingPointIndex );
    		allocatedBindingPoints.splice( index, 1 );

    		gl.deleteBuffer( buffers[ uniformsGroup.id ] );

    		delete buffers[ uniformsGroup.id ];
    		delete updateList[ uniformsGroup.id ];

    	}

    	function dispose() {

    		for ( const id in buffers ) {

    			gl.deleteBuffer( buffers[ id ] );

    		}

    		allocatedBindingPoints = [];
    		buffers = {};
    		updateList = {};

    	}

    	return {

    		bind: bind,
    		update: update,

    		dispose: dispose

    	};

    }

    function createCanvasElement() {

    	const canvas = createElementNS( 'canvas' );
    	canvas.style.display = 'block';
    	return canvas;

    }

    function WebGLRenderer( parameters = {} ) {

    	this.isWebGLRenderer = true;

    	const _canvas = parameters.canvas !== undefined ? parameters.canvas : createCanvasElement(),
    		_context = parameters.context !== undefined ? parameters.context : null,

    		_depth = parameters.depth !== undefined ? parameters.depth : true,
    		_stencil = parameters.stencil !== undefined ? parameters.stencil : true,
    		_antialias = parameters.antialias !== undefined ? parameters.antialias : false,
    		_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,
    		_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false,
    		_powerPreference = parameters.powerPreference !== undefined ? parameters.powerPreference : 'default',
    		_failIfMajorPerformanceCaveat = parameters.failIfMajorPerformanceCaveat !== undefined ? parameters.failIfMajorPerformanceCaveat : false;

    	let _alpha;

    	if ( _context !== null ) {

    		_alpha = _context.getContextAttributes().alpha;

    	} else {

    		_alpha = parameters.alpha !== undefined ? parameters.alpha : false;

    	}

    	let currentRenderList = null;
    	let currentRenderState = null;

    	// render() can be called from within a callback triggered by another render.
    	// We track this so that the nested render call gets its list and state isolated from the parent render call.

    	const renderListStack = [];
    	const renderStateStack = [];

    	// public properties

    	this.domElement = _canvas;

    	// Debug configuration container
    	this.debug = {

    		/**
    		 * Enables error checking and reporting when shader programs are being compiled
    		 * @type {boolean}
    		 */
    		checkShaderErrors: true
    	};

    	// clearing

    	this.autoClear = true;
    	this.autoClearColor = true;
    	this.autoClearDepth = true;
    	this.autoClearStencil = true;

    	// scene graph

    	this.sortObjects = true;

    	// user-defined clipping

    	this.clippingPlanes = [];
    	this.localClippingEnabled = false;

    	// physically based shading

    	this.outputEncoding = LinearEncoding;

    	// physical lights

    	this.physicallyCorrectLights = false;

    	// tone mapping

    	this.toneMapping = NoToneMapping;
    	this.toneMappingExposure = 1.0;

    	//

    	Object.defineProperties( this, {

    		// @deprecated since r136, 0e21088102b4de7e0a0a33140620b7a3424b9e6d

    		gammaFactor: {
    			get: function () {

    				console.warn( 'THREE.WebGLRenderer: .gammaFactor has been removed.' );
    				return 2;

    			},
    			set: function () {

    				console.warn( 'THREE.WebGLRenderer: .gammaFactor has been removed.' );

    			}
    		}

    	} );

    	// internal properties

    	const _this = this;

    	let _isContextLost = false;

    	// internal state cache

    	let _currentActiveCubeFace = 0;
    	let _currentActiveMipmapLevel = 0;
    	let _currentRenderTarget = null;
    	let _currentMaterialId = - 1;

    	let _currentCamera = null;

    	const _currentViewport = new Vector4();
    	const _currentScissor = new Vector4();
    	let _currentScissorTest = null;

    	//

    	let _width = _canvas.width;
    	let _height = _canvas.height;

    	let _pixelRatio = 1;
    	let _opaqueSort = null;
    	let _transparentSort = null;

    	const _viewport = new Vector4( 0, 0, _width, _height );
    	const _scissor = new Vector4( 0, 0, _width, _height );
    	let _scissorTest = false;

    	// frustum

    	const _frustum = new Frustum();

    	// clipping

    	let _clippingEnabled = false;
    	let _localClippingEnabled = false;

    	// transmission

    	let _transmissionRenderTarget = null;

    	// camera matrices cache

    	const _projScreenMatrix = new Matrix4();

    	const _vector2 = new Vector2();
    	const _vector3 = new Vector3();

    	const _emptyScene = { background: null, fog: null, environment: null, overrideMaterial: null, isScene: true };

    	function getTargetPixelRatio() {

    		return _currentRenderTarget === null ? _pixelRatio : 1;

    	}

    	// initialize

    	let _gl = _context;

    	function getContext( contextNames, contextAttributes ) {

    		for ( let i = 0; i < contextNames.length; i ++ ) {

    			const contextName = contextNames[ i ];
    			const context = _canvas.getContext( contextName, contextAttributes );
    			if ( context !== null ) return context;

    		}

    		return null;

    	}

    	try {

    		const contextAttributes = {
    			alpha: true,
    			depth: _depth,
    			stencil: _stencil,
    			antialias: _antialias,
    			premultipliedAlpha: _premultipliedAlpha,
    			preserveDrawingBuffer: _preserveDrawingBuffer,
    			powerPreference: _powerPreference,
    			failIfMajorPerformanceCaveat: _failIfMajorPerformanceCaveat
    		};

    		// OffscreenCanvas does not have setAttribute, see #22811
    		if ( 'setAttribute' in _canvas ) _canvas.setAttribute( 'data-engine', `three.js r${REVISION}` );

    		// event listeners must be registered before WebGL context is created, see #12753
    		_canvas.addEventListener( 'webglcontextlost', onContextLost, false );
    		_canvas.addEventListener( 'webglcontextrestored', onContextRestore, false );
    		_canvas.addEventListener( 'webglcontextcreationerror', onContextCreationError, false );

    		if ( _gl === null ) {

    			const contextNames = [ 'webgl2', 'webgl', 'experimental-webgl' ];

    			if ( _this.isWebGL1Renderer === true ) {

    				contextNames.shift();

    			}

    			_gl = getContext( contextNames, contextAttributes );

    			if ( _gl === null ) {

    				if ( getContext( contextNames ) ) {

    					throw new Error( 'Error creating WebGL context with your selected attributes.' );

    				} else {

    					throw new Error( 'Error creating WebGL context.' );

    				}

    			}

    		}

    		// Some experimental-webgl implementations do not have getShaderPrecisionFormat

    		if ( _gl.getShaderPrecisionFormat === undefined ) {

    			_gl.getShaderPrecisionFormat = function () {

    				return { 'rangeMin': 1, 'rangeMax': 1, 'precision': 1 };

    			};

    		}

    	} catch ( error ) {

    		console.error( 'THREE.WebGLRenderer: ' + error.message );
    		throw error;

    	}

    	let extensions, capabilities, state, info;
    	let properties, textures, cubemaps, cubeuvmaps, attributes, geometries, objects;
    	let programCache, materials, renderLists, renderStates, clipping, shadowMap;

    	let background, morphtargets, bufferRenderer, indexedBufferRenderer;

    	let utils, bindingStates, uniformsGroups;

    	function initGLContext() {

    		extensions = new WebGLExtensions( _gl );

    		capabilities = new WebGLCapabilities( _gl, extensions, parameters );

    		extensions.init( capabilities );

    		utils = new WebGLUtils( _gl, extensions, capabilities );

    		state = new WebGLState( _gl, extensions, capabilities );

    		info = new WebGLInfo();
    		properties = new WebGLProperties();
    		textures = new WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info );
    		cubemaps = new WebGLCubeMaps( _this );
    		cubeuvmaps = new WebGLCubeUVMaps( _this );
    		attributes = new WebGLAttributes( _gl, capabilities );
    		bindingStates = new WebGLBindingStates( _gl, extensions, attributes, capabilities );
    		geometries = new WebGLGeometries( _gl, attributes, info, bindingStates );
    		objects = new WebGLObjects( _gl, geometries, attributes, info );
    		morphtargets = new WebGLMorphtargets( _gl, capabilities, textures );
    		clipping = new WebGLClipping( properties );
    		programCache = new WebGLPrograms( _this, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping );
    		materials = new WebGLMaterials( _this, properties );
    		renderLists = new WebGLRenderLists();
    		renderStates = new WebGLRenderStates( extensions, capabilities );
    		background = new WebGLBackground( _this, cubemaps, state, objects, _alpha, _premultipliedAlpha );
    		shadowMap = new WebGLShadowMap( _this, objects, capabilities );
    		uniformsGroups = new WebGLUniformsGroups( _gl, info, capabilities, state );

    		bufferRenderer = new WebGLBufferRenderer( _gl, extensions, info, capabilities );
    		indexedBufferRenderer = new WebGLIndexedBufferRenderer( _gl, extensions, info, capabilities );

    		info.programs = programCache.programs;

    		_this.capabilities = capabilities;
    		_this.extensions = extensions;
    		_this.properties = properties;
    		_this.renderLists = renderLists;
    		_this.shadowMap = shadowMap;
    		_this.state = state;
    		_this.info = info;

    	}

    	initGLContext();

    	// xr

    	const xr = new WebXRManager( _this, _gl );

    	this.xr = xr;

    	// API

    	this.getContext = function () {

    		return _gl;

    	};

    	this.getContextAttributes = function () {

    		return _gl.getContextAttributes();

    	};

    	this.forceContextLoss = function () {

    		const extension = extensions.get( 'WEBGL_lose_context' );
    		if ( extension ) extension.loseContext();

    	};

    	this.forceContextRestore = function () {

    		const extension = extensions.get( 'WEBGL_lose_context' );
    		if ( extension ) extension.restoreContext();

    	};

    	this.getPixelRatio = function () {

    		return _pixelRatio;

    	};

    	this.setPixelRatio = function ( value ) {

    		if ( value === undefined ) return;

    		_pixelRatio = value;

    		this.setSize( _width, _height, false );

    	};

    	this.getSize = function ( target ) {

    		return target.set( _width, _height );

    	};

    	this.setSize = function ( width, height, updateStyle ) {

    		if ( xr.isPresenting ) {

    			console.warn( 'THREE.WebGLRenderer: Can\'t change size while VR device is presenting.' );
    			return;

    		}

    		_width = width;
    		_height = height;

    		_canvas.width = Math.floor( width * _pixelRatio );
    		_canvas.height = Math.floor( height * _pixelRatio );

    		if ( updateStyle !== false ) {

    			_canvas.style.width = width + 'px';
    			_canvas.style.height = height + 'px';

    		}

    		this.setViewport( 0, 0, width, height );

    	};

    	this.getDrawingBufferSize = function ( target ) {

    		return target.set( _width * _pixelRatio, _height * _pixelRatio ).floor();

    	};

    	this.setDrawingBufferSize = function ( width, height, pixelRatio ) {

    		_width = width;
    		_height = height;

    		_pixelRatio = pixelRatio;

    		_canvas.width = Math.floor( width * pixelRatio );
    		_canvas.height = Math.floor( height * pixelRatio );

    		this.setViewport( 0, 0, width, height );

    	};

    	this.getCurrentViewport = function ( target ) {

    		return target.copy( _currentViewport );

    	};

    	this.getViewport = function ( target ) {

    		return target.copy( _viewport );

    	};

    	this.setViewport = function ( x, y, width, height ) {

    		if ( x.isVector4 ) {

    			_viewport.set( x.x, x.y, x.z, x.w );

    		} else {

    			_viewport.set( x, y, width, height );

    		}

    		state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );

    	};

    	this.getScissor = function ( target ) {

    		return target.copy( _scissor );

    	};

    	this.setScissor = function ( x, y, width, height ) {

    		if ( x.isVector4 ) {

    			_scissor.set( x.x, x.y, x.z, x.w );

    		} else {

    			_scissor.set( x, y, width, height );

    		}

    		state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );

    	};

    	this.getScissorTest = function () {

    		return _scissorTest;

    	};

    	this.setScissorTest = function ( boolean ) {

    		state.setScissorTest( _scissorTest = boolean );

    	};

    	this.setOpaqueSort = function ( method ) {

    		_opaqueSort = method;

    	};

    	this.setTransparentSort = function ( method ) {

    		_transparentSort = method;

    	};

    	// Clearing

    	this.getClearColor = function ( target ) {

    		return target.copy( background.getClearColor() );

    	};

    	this.setClearColor = function () {

    		background.setClearColor.apply( background, arguments );

    	};

    	this.getClearAlpha = function () {

    		return background.getClearAlpha();

    	};

    	this.setClearAlpha = function () {

    		background.setClearAlpha.apply( background, arguments );

    	};

    	this.clear = function ( color = true, depth = true, stencil = true ) {

    		let bits = 0;

    		if ( color ) bits |= 16384;
    		if ( depth ) bits |= 256;
    		if ( stencil ) bits |= 1024;

    		_gl.clear( bits );

    	};

    	this.clearColor = function () {

    		this.clear( true, false, false );

    	};

    	this.clearDepth = function () {

    		this.clear( false, true, false );

    	};

    	this.clearStencil = function () {

    		this.clear( false, false, true );

    	};

    	//

    	this.dispose = function () {

    		_canvas.removeEventListener( 'webglcontextlost', onContextLost, false );
    		_canvas.removeEventListener( 'webglcontextrestored', onContextRestore, false );
    		_canvas.removeEventListener( 'webglcontextcreationerror', onContextCreationError, false );

    		renderLists.dispose();
    		renderStates.dispose();
    		properties.dispose();
    		cubemaps.dispose();
    		cubeuvmaps.dispose();
    		objects.dispose();
    		bindingStates.dispose();
    		uniformsGroups.dispose();
    		programCache.dispose();

    		xr.dispose();

    		xr.removeEventListener( 'sessionstart', onXRSessionStart );
    		xr.removeEventListener( 'sessionend', onXRSessionEnd );

    		if ( _transmissionRenderTarget ) {

    			_transmissionRenderTarget.dispose();
    			_transmissionRenderTarget = null;

    		}

    		animation.stop();

    	};

    	// Events

    	function onContextLost( event ) {

    		event.preventDefault();

    		console.log( 'THREE.WebGLRenderer: Context Lost.' );

    		_isContextLost = true;

    	}

    	function onContextRestore( /* event */ ) {

    		console.log( 'THREE.WebGLRenderer: Context Restored.' );

    		_isContextLost = false;

    		const infoAutoReset = info.autoReset;
    		const shadowMapEnabled = shadowMap.enabled;
    		const shadowMapAutoUpdate = shadowMap.autoUpdate;
    		const shadowMapNeedsUpdate = shadowMap.needsUpdate;
    		const shadowMapType = shadowMap.type;

    		initGLContext();

    		info.autoReset = infoAutoReset;
    		shadowMap.enabled = shadowMapEnabled;
    		shadowMap.autoUpdate = shadowMapAutoUpdate;
    		shadowMap.needsUpdate = shadowMapNeedsUpdate;
    		shadowMap.type = shadowMapType;

    	}

    	function onContextCreationError( event ) {

    		console.error( 'THREE.WebGLRenderer: A WebGL context could not be created. Reason: ', event.statusMessage );

    	}

    	function onMaterialDispose( event ) {

    		const material = event.target;

    		material.removeEventListener( 'dispose', onMaterialDispose );

    		deallocateMaterial( material );

    	}

    	// Buffer deallocation

    	function deallocateMaterial( material ) {

    		releaseMaterialProgramReferences( material );

    		properties.remove( material );

    	}


    	function releaseMaterialProgramReferences( material ) {

    		const programs = properties.get( material ).programs;

    		if ( programs !== undefined ) {

    			programs.forEach( function ( program ) {

    				programCache.releaseProgram( program );

    			} );

    			if ( material.isShaderMaterial ) {

    				programCache.releaseShaderCache( material );

    			}

    		}

    	}

    	// Buffer rendering

    	this.renderBufferDirect = function ( camera, scene, geometry, material, object, group ) {

    		if ( scene === null ) scene = _emptyScene; // renderBufferDirect second parameter used to be fog (could be null)

    		const frontFaceCW = ( object.isMesh && object.matrixWorld.determinant() < 0 );

    		const program = setProgram( camera, scene, geometry, material, object );

    		state.setMaterial( material, frontFaceCW );

    		//

    		let index = geometry.index;
    		const position = geometry.attributes.position;

    		//

    		if ( index === null ) {

    			if ( position === undefined || position.count === 0 ) return;

    		} else if ( index.count === 0 ) {

    			return;

    		}

    		//

    		let rangeFactor = 1;

    		if ( material.wireframe === true ) {

    			index = geometries.getWireframeAttribute( geometry );
    			rangeFactor = 2;

    		}

    		bindingStates.setup( object, material, program, geometry, index );

    		let attribute;
    		let renderer = bufferRenderer;

    		if ( index !== null ) {

    			attribute = attributes.get( index );

    			renderer = indexedBufferRenderer;
    			renderer.setIndex( attribute );

    		}

    		//

    		const dataCount = ( index !== null ) ? index.count : position.count;

    		const rangeStart = geometry.drawRange.start * rangeFactor;
    		const rangeCount = geometry.drawRange.count * rangeFactor;

    		const groupStart = group !== null ? group.start * rangeFactor : 0;
    		const groupCount = group !== null ? group.count * rangeFactor : Infinity;

    		const drawStart = Math.max( rangeStart, groupStart );
    		const drawEnd = Math.min( dataCount, rangeStart + rangeCount, groupStart + groupCount ) - 1;

    		const drawCount = Math.max( 0, drawEnd - drawStart + 1 );

    		if ( drawCount === 0 ) return;

    		//

    		if ( object.isMesh ) {

    			if ( material.wireframe === true ) {

    				state.setLineWidth( material.wireframeLinewidth * getTargetPixelRatio() );
    				renderer.setMode( 1 );

    			} else {

    				renderer.setMode( 4 );

    			}

    		} else if ( object.isLine ) {

    			let lineWidth = material.linewidth;

    			if ( lineWidth === undefined ) lineWidth = 1; // Not using Line*Material

    			state.setLineWidth( lineWidth * getTargetPixelRatio() );

    			if ( object.isLineSegments ) {

    				renderer.setMode( 1 );

    			} else if ( object.isLineLoop ) {

    				renderer.setMode( 2 );

    			} else {

    				renderer.setMode( 3 );

    			}

    		} else if ( object.isPoints ) {

    			renderer.setMode( 0 );

    		} else if ( object.isSprite ) {

    			renderer.setMode( 4 );

    		}

    		if ( object.isInstancedMesh ) {

    			renderer.renderInstances( drawStart, drawCount, object.count );

    		} else if ( geometry.isInstancedBufferGeometry ) {

    			const instanceCount = Math.min( geometry.instanceCount, geometry._maxInstanceCount );

    			renderer.renderInstances( drawStart, drawCount, instanceCount );

    		} else {

    			renderer.render( drawStart, drawCount );

    		}

    	};

    	// Compile

    	this.compile = function ( scene, camera ) {

    		function prepare( material, scene, object ) {

    			if ( material.transparent === true && material.side === DoubleSide ) {

    				material.side = BackSide;
    				material.needsUpdate = true;
    				getProgram( material, scene, object );

    				material.side = FrontSide;
    				material.needsUpdate = true;
    				getProgram( material, scene, object );

    				material.side = DoubleSide;

    			} else {

    				getProgram( material, scene, object );

    			}

    		}

    		currentRenderState = renderStates.get( scene );
    		currentRenderState.init();

    		renderStateStack.push( currentRenderState );

    		scene.traverseVisible( function ( object ) {

    			if ( object.isLight && object.layers.test( camera.layers ) ) {

    				currentRenderState.pushLight( object );

    				if ( object.castShadow ) {

    					currentRenderState.pushShadow( object );

    				}

    			}

    		} );

    		currentRenderState.setupLights( _this.physicallyCorrectLights );

    		scene.traverse( function ( object ) {

    			const material = object.material;

    			if ( material ) {

    				if ( Array.isArray( material ) ) {

    					for ( let i = 0; i < material.length; i ++ ) {

    						const material2 = material[ i ];

    						prepare( material2, scene, object );

    					}

    				} else {

    					prepare( material, scene, object );

    				}

    			}

    		} );

    		renderStateStack.pop();
    		currentRenderState = null;

    	};

    	// Animation Loop

    	let onAnimationFrameCallback = null;

    	function onAnimationFrame( time ) {

    		if ( onAnimationFrameCallback ) onAnimationFrameCallback( time );

    	}

    	function onXRSessionStart() {

    		animation.stop();

    	}

    	function onXRSessionEnd() {

    		animation.start();

    	}

    	const animation = new WebGLAnimation();
    	animation.setAnimationLoop( onAnimationFrame );

    	if ( typeof self !== 'undefined' ) animation.setContext( self );

    	this.setAnimationLoop = function ( callback ) {

    		onAnimationFrameCallback = callback;
    		xr.setAnimationLoop( callback );

    		( callback === null ) ? animation.stop() : animation.start();

    	};

    	xr.addEventListener( 'sessionstart', onXRSessionStart );
    	xr.addEventListener( 'sessionend', onXRSessionEnd );

    	// Rendering

    	this.render = function ( scene, camera ) {

    		if ( camera !== undefined && camera.isCamera !== true ) {

    			console.error( 'THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.' );
    			return;

    		}

    		if ( _isContextLost === true ) return;

    		// update scene graph

    		if ( scene.matrixWorldAutoUpdate === true ) scene.updateMatrixWorld();

    		// update camera matrices and frustum

    		if ( camera.parent === null && camera.matrixWorldAutoUpdate === true ) camera.updateMatrixWorld();

    		if ( xr.enabled === true && xr.isPresenting === true ) {

    			if ( xr.cameraAutoUpdate === true ) xr.updateCamera( camera );

    			camera = xr.getCamera(); // use XR camera for rendering

    		}

    		//
    		if ( scene.isScene === true ) scene.onBeforeRender( _this, scene, camera, _currentRenderTarget );

    		currentRenderState = renderStates.get( scene, renderStateStack.length );
    		currentRenderState.init();

    		renderStateStack.push( currentRenderState );

    		_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
    		_frustum.setFromProjectionMatrix( _projScreenMatrix );

    		_localClippingEnabled = this.localClippingEnabled;
    		_clippingEnabled = clipping.init( this.clippingPlanes, _localClippingEnabled, camera );

    		currentRenderList = renderLists.get( scene, renderListStack.length );
    		currentRenderList.init();

    		renderListStack.push( currentRenderList );

    		projectObject( scene, camera, 0, _this.sortObjects );

    		currentRenderList.finish();

    		if ( _this.sortObjects === true ) {

    			currentRenderList.sort( _opaqueSort, _transparentSort );

    		}

    		//

    		if ( _clippingEnabled === true ) clipping.beginShadows();

    		const shadowsArray = currentRenderState.state.shadowsArray;

    		shadowMap.render( shadowsArray, scene, camera );

    		if ( _clippingEnabled === true ) clipping.endShadows();

    		//

    		if ( this.info.autoReset === true ) this.info.reset();

    		//

    		background.render( currentRenderList, scene );

    		// render scene

    		currentRenderState.setupLights( _this.physicallyCorrectLights );

    		if ( camera.isArrayCamera ) {

    			const cameras = camera.cameras;

    			for ( let i = 0, l = cameras.length; i < l; i ++ ) {

    				const camera2 = cameras[ i ];

    				renderScene( currentRenderList, scene, camera2, camera2.viewport );

    			}

    		} else {

    			renderScene( currentRenderList, scene, camera );

    		}

    		//

    		if ( _currentRenderTarget !== null ) {

    			// resolve multisample renderbuffers to a single-sample texture if necessary

    			textures.updateMultisampleRenderTarget( _currentRenderTarget );

    			// Generate mipmap if we're using any kind of mipmap filtering

    			textures.updateRenderTargetMipmap( _currentRenderTarget );

    		}

    		//

    		if ( scene.isScene === true ) scene.onAfterRender( _this, scene, camera );

    		// _gl.finish();

    		bindingStates.resetDefaultState();
    		_currentMaterialId = - 1;
    		_currentCamera = null;

    		renderStateStack.pop();

    		if ( renderStateStack.length > 0 ) {

    			currentRenderState = renderStateStack[ renderStateStack.length - 1 ];

    		} else {

    			currentRenderState = null;

    		}

    		renderListStack.pop();

    		if ( renderListStack.length > 0 ) {

    			currentRenderList = renderListStack[ renderListStack.length - 1 ];

    		} else {

    			currentRenderList = null;

    		}

    	};

    	function projectObject( object, camera, groupOrder, sortObjects ) {

    		if ( object.visible === false ) return;

    		const visible = object.layers.test( camera.layers );

    		if ( visible ) {

    			if ( object.isGroup ) {

    				groupOrder = object.renderOrder;

    			} else if ( object.isLOD ) {

    				if ( object.autoUpdate === true ) object.update( camera );

    			} else if ( object.isLight ) {

    				currentRenderState.pushLight( object );

    				if ( object.castShadow ) {

    					currentRenderState.pushShadow( object );

    				}

    			} else if ( object.isSprite ) {

    				if ( ! object.frustumCulled || _frustum.intersectsSprite( object ) ) {

    					if ( sortObjects ) {

    						_vector3.setFromMatrixPosition( object.matrixWorld )
    							.applyMatrix4( _projScreenMatrix );

    					}

    					const geometry = objects.update( object );
    					const material = object.material;

    					if ( material.visible ) {

    						currentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );

    					}

    				}

    			} else if ( object.isMesh || object.isLine || object.isPoints ) {

    				if ( object.isSkinnedMesh ) {

    					// update skeleton only once in a frame

    					if ( object.skeleton.frame !== info.render.frame ) {

    						object.skeleton.update();
    						object.skeleton.frame = info.render.frame;

    					}

    				}

    				if ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) {

    					if ( sortObjects ) {

    						_vector3.setFromMatrixPosition( object.matrixWorld )
    							.applyMatrix4( _projScreenMatrix );

    					}

    					const geometry = objects.update( object );
    					const material = object.material;

    					if ( Array.isArray( material ) ) {

    						const groups = geometry.groups;

    						for ( let i = 0, l = groups.length; i < l; i ++ ) {

    							const group = groups[ i ];
    							const groupMaterial = material[ group.materialIndex ];

    							if ( groupMaterial && groupMaterial.visible ) {

    								currentRenderList.push( object, geometry, groupMaterial, groupOrder, _vector3.z, group );

    							}

    						}

    					} else if ( material.visible ) {

    						currentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );

    					}

    				}

    			}

    		}

    		const children = object.children;

    		for ( let i = 0, l = children.length; i < l; i ++ ) {

    			projectObject( children[ i ], camera, groupOrder, sortObjects );

    		}

    	}

    	function renderScene( currentRenderList, scene, camera, viewport ) {

    		const opaqueObjects = currentRenderList.opaque;
    		const transmissiveObjects = currentRenderList.transmissive;
    		const transparentObjects = currentRenderList.transparent;

    		currentRenderState.setupLightsView( camera );

    		if ( transmissiveObjects.length > 0 ) renderTransmissionPass( opaqueObjects, scene, camera );

    		if ( viewport ) state.viewport( _currentViewport.copy( viewport ) );

    		if ( opaqueObjects.length > 0 ) renderObjects( opaqueObjects, scene, camera );
    		if ( transmissiveObjects.length > 0 ) renderObjects( transmissiveObjects, scene, camera );
    		if ( transparentObjects.length > 0 ) renderObjects( transparentObjects, scene, camera );

    		// Ensure depth buffer writing is enabled so it can be cleared on next render

    		state.buffers.depth.setTest( true );
    		state.buffers.depth.setMask( true );
    		state.buffers.color.setMask( true );

    		state.setPolygonOffset( false );

    	}

    	function renderTransmissionPass( opaqueObjects, scene, camera ) {

    		const isWebGL2 = capabilities.isWebGL2;

    		if ( _transmissionRenderTarget === null ) {

    			_transmissionRenderTarget = new WebGLRenderTarget( 1, 1, {
    				generateMipmaps: true,
    				type: extensions.has( 'EXT_color_buffer_half_float' ) ? HalfFloatType : UnsignedByteType,
    				minFilter: LinearMipmapLinearFilter,
    				samples: ( isWebGL2 && _antialias === true ) ? 4 : 0
    			} );

    		}

    		_this.getDrawingBufferSize( _vector2 );

    		if ( isWebGL2 ) {

    			_transmissionRenderTarget.setSize( _vector2.x, _vector2.y );

    		} else {

    			_transmissionRenderTarget.setSize( floorPowerOfTwo( _vector2.x ), floorPowerOfTwo( _vector2.y ) );

    		}

    		//

    		const currentRenderTarget = _this.getRenderTarget();
    		_this.setRenderTarget( _transmissionRenderTarget );
    		_this.clear();

    		// Turn off the features which can affect the frag color for opaque objects pass.
    		// Otherwise they are applied twice in opaque objects pass and transmission objects pass.
    		const currentToneMapping = _this.toneMapping;
    		_this.toneMapping = NoToneMapping;

    		renderObjects( opaqueObjects, scene, camera );

    		_this.toneMapping = currentToneMapping;

    		textures.updateMultisampleRenderTarget( _transmissionRenderTarget );
    		textures.updateRenderTargetMipmap( _transmissionRenderTarget );

    		_this.setRenderTarget( currentRenderTarget );

    	}

    	function renderObjects( renderList, scene, camera ) {

    		const overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;

    		for ( let i = 0, l = renderList.length; i < l; i ++ ) {

    			const renderItem = renderList[ i ];

    			const object = renderItem.object;
    			const geometry = renderItem.geometry;
    			const material = overrideMaterial === null ? renderItem.material : overrideMaterial;
    			const group = renderItem.group;

    			if ( object.layers.test( camera.layers ) ) {

    				renderObject( object, scene, camera, geometry, material, group );

    			}

    		}

    	}

    	function renderObject( object, scene, camera, geometry, material, group ) {

    		object.onBeforeRender( _this, scene, camera, geometry, material, group );

    		object.modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );
    		object.normalMatrix.getNormalMatrix( object.modelViewMatrix );

    		material.onBeforeRender( _this, scene, camera, geometry, object, group );

    		if ( material.transparent === true && material.side === DoubleSide ) {

    			material.side = BackSide;
    			material.needsUpdate = true;
    			_this.renderBufferDirect( camera, scene, geometry, material, object, group );

    			material.side = FrontSide;
    			material.needsUpdate = true;
    			_this.renderBufferDirect( camera, scene, geometry, material, object, group );

    			material.side = DoubleSide;

    		} else {

    			_this.renderBufferDirect( camera, scene, geometry, material, object, group );

    		}

    		object.onAfterRender( _this, scene, camera, geometry, material, group );

    	}

    	function getProgram( material, scene, object ) {

    		if ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...

    		const materialProperties = properties.get( material );

    		const lights = currentRenderState.state.lights;
    		const shadowsArray = currentRenderState.state.shadowsArray;

    		const lightsStateVersion = lights.state.version;

    		const parameters = programCache.getParameters( material, lights.state, shadowsArray, scene, object );
    		const programCacheKey = programCache.getProgramCacheKey( parameters );

    		let programs = materialProperties.programs;

    		// always update environment and fog - changing these trigger an getProgram call, but it's possible that the program doesn't change

    		materialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;
    		materialProperties.fog = scene.fog;
    		materialProperties.envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || materialProperties.environment );

    		if ( programs === undefined ) {

    			// new material

    			material.addEventListener( 'dispose', onMaterialDispose );

    			programs = new Map();
    			materialProperties.programs = programs;

    		}

    		let program = programs.get( programCacheKey );

    		if ( program !== undefined ) {

    			// early out if program and light state is identical

    			if ( materialProperties.currentProgram === program && materialProperties.lightsStateVersion === lightsStateVersion ) {

    				updateCommonMaterialProperties( material, parameters );

    				return program;

    			}

    		} else {

    			parameters.uniforms = programCache.getUniforms( material );

    			material.onBuild( object, parameters, _this );

    			material.onBeforeCompile( parameters, _this );

    			program = programCache.acquireProgram( parameters, programCacheKey );
    			programs.set( programCacheKey, program );

    			materialProperties.uniforms = parameters.uniforms;

    		}

    		const uniforms = materialProperties.uniforms;

    		if ( ( ! material.isShaderMaterial && ! material.isRawShaderMaterial ) || material.clipping === true ) {

    			uniforms.clippingPlanes = clipping.uniform;

    		}

    		updateCommonMaterialProperties( material, parameters );

    		// store the light setup it was created for

    		materialProperties.needsLights = materialNeedsLights( material );
    		materialProperties.lightsStateVersion = lightsStateVersion;

    		if ( materialProperties.needsLights ) {

    			// wire up the material to this renderer's lighting state

    			uniforms.ambientLightColor.value = lights.state.ambient;
    			uniforms.lightProbe.value = lights.state.probe;
    			uniforms.directionalLights.value = lights.state.directional;
    			uniforms.directionalLightShadows.value = lights.state.directionalShadow;
    			uniforms.spotLights.value = lights.state.spot;
    			uniforms.spotLightShadows.value = lights.state.spotShadow;
    			uniforms.rectAreaLights.value = lights.state.rectArea;
    			uniforms.ltc_1.value = lights.state.rectAreaLTC1;
    			uniforms.ltc_2.value = lights.state.rectAreaLTC2;
    			uniforms.pointLights.value = lights.state.point;
    			uniforms.pointLightShadows.value = lights.state.pointShadow;
    			uniforms.hemisphereLights.value = lights.state.hemi;

    			uniforms.directionalShadowMap.value = lights.state.directionalShadowMap;
    			uniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;
    			uniforms.spotShadowMap.value = lights.state.spotShadowMap;
    			uniforms.spotLightMatrix.value = lights.state.spotLightMatrix;
    			uniforms.spotLightMap.value = lights.state.spotLightMap;
    			uniforms.pointShadowMap.value = lights.state.pointShadowMap;
    			uniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix;
    			// TODO (abelnation): add area lights shadow info to uniforms

    		}

    		const progUniforms = program.getUniforms();
    		const uniformsList = WebGLUniforms.seqWithValue( progUniforms.seq, uniforms );

    		materialProperties.currentProgram = program;
    		materialProperties.uniformsList = uniformsList;

    		return program;

    	}

    	function updateCommonMaterialProperties( material, parameters ) {

    		const materialProperties = properties.get( material );

    		materialProperties.outputEncoding = parameters.outputEncoding;
    		materialProperties.instancing = parameters.instancing;
    		materialProperties.skinning = parameters.skinning;
    		materialProperties.morphTargets = parameters.morphTargets;
    		materialProperties.morphNormals = parameters.morphNormals;
    		materialProperties.morphColors = parameters.morphColors;
    		materialProperties.morphTargetsCount = parameters.morphTargetsCount;
    		materialProperties.numClippingPlanes = parameters.numClippingPlanes;
    		materialProperties.numIntersection = parameters.numClipIntersection;
    		materialProperties.vertexAlphas = parameters.vertexAlphas;
    		materialProperties.vertexTangents = parameters.vertexTangents;
    		materialProperties.toneMapping = parameters.toneMapping;

    	}

    	function setProgram( camera, scene, geometry, material, object ) {

    		if ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...

    		textures.resetTextureUnits();

    		const fog = scene.fog;
    		const environment = material.isMeshStandardMaterial ? scene.environment : null;
    		const encoding = ( _currentRenderTarget === null ) ? _this.outputEncoding : ( _currentRenderTarget.isXRRenderTarget === true ? _currentRenderTarget.texture.encoding : LinearEncoding );
    		const envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || environment );
    		const vertexAlphas = material.vertexColors === true && !! geometry.attributes.color && geometry.attributes.color.itemSize === 4;
    		const vertexTangents = !! material.normalMap && !! geometry.attributes.tangent;
    		const morphTargets = !! geometry.morphAttributes.position;
    		const morphNormals = !! geometry.morphAttributes.normal;
    		const morphColors = !! geometry.morphAttributes.color;
    		const toneMapping = material.toneMapped ? _this.toneMapping : NoToneMapping;

    		const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
    		const morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;

    		const materialProperties = properties.get( material );
    		const lights = currentRenderState.state.lights;

    		if ( _clippingEnabled === true ) {

    			if ( _localClippingEnabled === true || camera !== _currentCamera ) {

    				const useCache =
    					camera === _currentCamera &&
    					material.id === _currentMaterialId;

    				// we might want to call this function with some ClippingGroup
    				// object instead of the material, once it becomes feasible
    				// (#8465, #8379)
    				clipping.setState( material, camera, useCache );

    			}

    		}

    		//

    		let needsProgramChange = false;

    		if ( material.version === materialProperties.__version ) {

    			if ( materialProperties.needsLights && ( materialProperties.lightsStateVersion !== lights.state.version ) ) {

    				needsProgramChange = true;

    			} else if ( materialProperties.outputEncoding !== encoding ) {

    				needsProgramChange = true;

    			} else if ( object.isInstancedMesh && materialProperties.instancing === false ) {

    				needsProgramChange = true;

    			} else if ( ! object.isInstancedMesh && materialProperties.instancing === true ) {

    				needsProgramChange = true;

    			} else if ( object.isSkinnedMesh && materialProperties.skinning === false ) {

    				needsProgramChange = true;

    			} else if ( ! object.isSkinnedMesh && materialProperties.skinning === true ) {

    				needsProgramChange = true;

    			} else if ( materialProperties.envMap !== envMap ) {

    				needsProgramChange = true;

    			} else if ( material.fog === true && materialProperties.fog !== fog ) {

    				needsProgramChange = true;

    			} else if ( materialProperties.numClippingPlanes !== undefined &&
    				( materialProperties.numClippingPlanes !== clipping.numPlanes ||
    				materialProperties.numIntersection !== clipping.numIntersection ) ) {

    				needsProgramChange = true;

    			} else if ( materialProperties.vertexAlphas !== vertexAlphas ) {

    				needsProgramChange = true;

    			} else if ( materialProperties.vertexTangents !== vertexTangents ) {

    				needsProgramChange = true;

    			} else if ( materialProperties.morphTargets !== morphTargets ) {

    				needsProgramChange = true;

    			} else if ( materialProperties.morphNormals !== morphNormals ) {

    				needsProgramChange = true;

    			} else if ( materialProperties.morphColors !== morphColors ) {

    				needsProgramChange = true;

    			} else if ( materialProperties.toneMapping !== toneMapping ) {

    				needsProgramChange = true;

    			} else if ( capabilities.isWebGL2 === true && materialProperties.morphTargetsCount !== morphTargetsCount ) {

    				needsProgramChange = true;

    			}

    		} else {

    			needsProgramChange = true;
    			materialProperties.__version = material.version;

    		}

    		//

    		let program = materialProperties.currentProgram;

    		if ( needsProgramChange === true ) {

    			program = getProgram( material, scene, object );

    		}

    		let refreshProgram = false;
    		let refreshMaterial = false;
    		let refreshLights = false;

    		const p_uniforms = program.getUniforms(),
    			m_uniforms = materialProperties.uniforms;

    		if ( state.useProgram( program.program ) ) {

    			refreshProgram = true;
    			refreshMaterial = true;
    			refreshLights = true;

    		}

    		if ( material.id !== _currentMaterialId ) {

    			_currentMaterialId = material.id;

    			refreshMaterial = true;

    		}

    		if ( refreshProgram || _currentCamera !== camera ) {

    			p_uniforms.setValue( _gl, 'projectionMatrix', camera.projectionMatrix );

    			if ( capabilities.logarithmicDepthBuffer ) {

    				p_uniforms.setValue( _gl, 'logDepthBufFC',
    					2.0 / ( Math.log( camera.far + 1.0 ) / Math.LN2 ) );

    			}

    			if ( _currentCamera !== camera ) {

    				_currentCamera = camera;

    				// lighting uniforms depend on the camera so enforce an update
    				// now, in case this material supports lights - or later, when
    				// the next material that does gets activated:

    				refreshMaterial = true;		// set to true on material change
    				refreshLights = true;		// remains set until update done

    			}

    			// load material specific uniforms
    			// (shader material also gets them for the sake of genericity)

    			if ( material.isShaderMaterial ||
    				material.isMeshPhongMaterial ||
    				material.isMeshToonMaterial ||
    				material.isMeshStandardMaterial ||
    				material.envMap ) {

    				const uCamPos = p_uniforms.map.cameraPosition;

    				if ( uCamPos !== undefined ) {

    					uCamPos.setValue( _gl,
    						_vector3.setFromMatrixPosition( camera.matrixWorld ) );

    				}

    			}

    			if ( material.isMeshPhongMaterial ||
    				material.isMeshToonMaterial ||
    				material.isMeshLambertMaterial ||
    				material.isMeshBasicMaterial ||
    				material.isMeshStandardMaterial ||
    				material.isShaderMaterial ) {

    				p_uniforms.setValue( _gl, 'isOrthographic', camera.isOrthographicCamera === true );

    			}

    			if ( material.isMeshPhongMaterial ||
    				material.isMeshToonMaterial ||
    				material.isMeshLambertMaterial ||
    				material.isMeshBasicMaterial ||
    				material.isMeshStandardMaterial ||
    				material.isShaderMaterial ||
    				material.isShadowMaterial ||
    				object.isSkinnedMesh ) {

    				p_uniforms.setValue( _gl, 'viewMatrix', camera.matrixWorldInverse );

    			}

    		}

    		// skinning and morph target uniforms must be set even if material didn't change
    		// auto-setting of texture unit for bone and morph texture must go before other textures
    		// otherwise textures used for skinning and morphing can take over texture units reserved for other material textures

    		if ( object.isSkinnedMesh ) {

    			p_uniforms.setOptional( _gl, object, 'bindMatrix' );
    			p_uniforms.setOptional( _gl, object, 'bindMatrixInverse' );

    			const skeleton = object.skeleton;

    			if ( skeleton ) {

    				if ( capabilities.floatVertexTextures ) {

    					if ( skeleton.boneTexture === null ) skeleton.computeBoneTexture();

    					p_uniforms.setValue( _gl, 'boneTexture', skeleton.boneTexture, textures );
    					p_uniforms.setValue( _gl, 'boneTextureSize', skeleton.boneTextureSize );

    				} else {

    					console.warn( 'THREE.WebGLRenderer: SkinnedMesh can only be used with WebGL 2. With WebGL 1 OES_texture_float and vertex textures support is required.' );

    				}

    			}

    		}

    		const morphAttributes = geometry.morphAttributes;

    		if ( morphAttributes.position !== undefined || morphAttributes.normal !== undefined || ( morphAttributes.color !== undefined && capabilities.isWebGL2 === true ) ) {

    			morphtargets.update( object, geometry, material, program );

    		}

    		if ( refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow ) {

    			materialProperties.receiveShadow = object.receiveShadow;
    			p_uniforms.setValue( _gl, 'receiveShadow', object.receiveShadow );

    		}

    		// https://github.com/mrdoob/three.js/pull/24467#issuecomment-1209031512

    		if ( material.isMeshGouraudMaterial && material.envMap !== null ) {

    			m_uniforms.envMap.value = envMap;

    			m_uniforms.flipEnvMap.value = ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) ? - 1 : 1;

    		}

    		if ( refreshMaterial ) {

    			p_uniforms.setValue( _gl, 'toneMappingExposure', _this.toneMappingExposure );

    			if ( materialProperties.needsLights ) {

    				// the current material requires lighting info

    				// note: all lighting uniforms are always set correctly
    				// they simply reference the renderer's state for their
    				// values
    				//
    				// use the current material's .needsUpdate flags to set
    				// the GL state when required

    				markUniformsLightsNeedsUpdate( m_uniforms, refreshLights );

    			}

    			// refresh uniforms common to several materials

    			if ( fog && material.fog === true ) {

    				materials.refreshFogUniforms( m_uniforms, fog );

    			}

    			materials.refreshMaterialUniforms( m_uniforms, material, _pixelRatio, _height, _transmissionRenderTarget );

    			WebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );

    		}

    		if ( material.isShaderMaterial && material.uniformsNeedUpdate === true ) {

    			WebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );
    			material.uniformsNeedUpdate = false;

    		}

    		if ( material.isSpriteMaterial ) {

    			p_uniforms.setValue( _gl, 'center', object.center );

    		}

    		// common matrices

    		p_uniforms.setValue( _gl, 'modelViewMatrix', object.modelViewMatrix );
    		p_uniforms.setValue( _gl, 'normalMatrix', object.normalMatrix );
    		p_uniforms.setValue( _gl, 'modelMatrix', object.matrixWorld );

    		// UBOs

    		if ( material.isShaderMaterial || material.isRawShaderMaterial ) {

    			const groups = material.uniformsGroups;

    			for ( let i = 0, l = groups.length; i < l; i ++ ) {

    				if ( capabilities.isWebGL2 ) {

    					const group = groups[ i ];

    					uniformsGroups.update( group, program );
    					uniformsGroups.bind( group, program );

    				} else {

    					console.warn( 'THREE.WebGLRenderer: Uniform Buffer Objects can only be used with WebGL 2.' );

    				}

    			}

    		}

    		return program;

    	}

    	// If uniforms are marked as clean, they don't need to be loaded to the GPU.

    	function markUniformsLightsNeedsUpdate( uniforms, value ) {

    		uniforms.ambientLightColor.needsUpdate = value;
    		uniforms.lightProbe.needsUpdate = value;

    		uniforms.directionalLights.needsUpdate = value;
    		uniforms.directionalLightShadows.needsUpdate = value;
    		uniforms.pointLights.needsUpdate = value;
    		uniforms.pointLightShadows.needsUpdate = value;
    		uniforms.spotLights.needsUpdate = value;
    		uniforms.spotLightShadows.needsUpdate = value;
    		uniforms.rectAreaLights.needsUpdate = value;
    		uniforms.hemisphereLights.needsUpdate = value;

    	}

    	function materialNeedsLights( material ) {

    		return material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial ||
    			material.isMeshStandardMaterial || material.isShadowMaterial ||
    			( material.isShaderMaterial && material.lights === true );

    	}

    	this.getActiveCubeFace = function () {

    		return _currentActiveCubeFace;

    	};

    	this.getActiveMipmapLevel = function () {

    		return _currentActiveMipmapLevel;

    	};

    	this.getRenderTarget = function () {

    		return _currentRenderTarget;

    	};

    	this.setRenderTargetTextures = function ( renderTarget, colorTexture, depthTexture ) {

    		properties.get( renderTarget.texture ).__webglTexture = colorTexture;
    		properties.get( renderTarget.depthTexture ).__webglTexture = depthTexture;

    		const renderTargetProperties = properties.get( renderTarget );
    		renderTargetProperties.__hasExternalTextures = true;

    		if ( renderTargetProperties.__hasExternalTextures ) {

    			renderTargetProperties.__autoAllocateDepthBuffer = depthTexture === undefined;

    			if ( ! renderTargetProperties.__autoAllocateDepthBuffer ) {

    				// The multisample_render_to_texture extension doesn't work properly if there
    				// are midframe flushes and an external depth buffer. Disable use of the extension.
    				if ( extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true ) {

    					console.warn( 'THREE.WebGLRenderer: Render-to-texture extension was disabled because an external texture was provided' );
    					renderTargetProperties.__useRenderToTexture = false;

    				}

    			}

    		}

    	};

    	this.setRenderTargetFramebuffer = function ( renderTarget, defaultFramebuffer ) {

    		const renderTargetProperties = properties.get( renderTarget );
    		renderTargetProperties.__webglFramebuffer = defaultFramebuffer;
    		renderTargetProperties.__useDefaultFramebuffer = defaultFramebuffer === undefined;

    	};

    	this.setRenderTarget = function ( renderTarget, activeCubeFace = 0, activeMipmapLevel = 0 ) {

    		_currentRenderTarget = renderTarget;
    		_currentActiveCubeFace = activeCubeFace;
    		_currentActiveMipmapLevel = activeMipmapLevel;

    		let useDefaultFramebuffer = true;

    		if ( renderTarget ) {

    			const renderTargetProperties = properties.get( renderTarget );

    			if ( renderTargetProperties.__useDefaultFramebuffer !== undefined ) {

    				// We need to make sure to rebind the framebuffer.
    				state.bindFramebuffer( 36160, null );
    				useDefaultFramebuffer = false;

    			} else if ( renderTargetProperties.__webglFramebuffer === undefined ) {

    				textures.setupRenderTarget( renderTarget );

    			} else if ( renderTargetProperties.__hasExternalTextures ) {

    				// Color and depth texture must be rebound in order for the swapchain to update.
    				textures.rebindTextures( renderTarget, properties.get( renderTarget.texture ).__webglTexture, properties.get( renderTarget.depthTexture ).__webglTexture );

    			}

    		}

    		let framebuffer = null;
    		let isCube = false;
    		let isRenderTarget3D = false;

    		if ( renderTarget ) {

    			const texture = renderTarget.texture;

    			if ( texture.isData3DTexture || texture.isDataArrayTexture ) {

    				isRenderTarget3D = true;

    			}

    			const __webglFramebuffer = properties.get( renderTarget ).__webglFramebuffer;

    			if ( renderTarget.isWebGLCubeRenderTarget ) {

    				framebuffer = __webglFramebuffer[ activeCubeFace ];
    				isCube = true;

    			} else if ( ( capabilities.isWebGL2 && renderTarget.samples > 0 ) && textures.useMultisampledRTT( renderTarget ) === false ) {

    				framebuffer = properties.get( renderTarget ).__webglMultisampledFramebuffer;

    			} else {

    				framebuffer = __webglFramebuffer;

    			}

    			_currentViewport.copy( renderTarget.viewport );
    			_currentScissor.copy( renderTarget.scissor );
    			_currentScissorTest = renderTarget.scissorTest;

    		} else {

    			_currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor();
    			_currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor();
    			_currentScissorTest = _scissorTest;

    		}

    		const framebufferBound = state.bindFramebuffer( 36160, framebuffer );

    		if ( framebufferBound && capabilities.drawBuffers && useDefaultFramebuffer ) {

    			state.drawBuffers( renderTarget, framebuffer );

    		}

    		state.viewport( _currentViewport );
    		state.scissor( _currentScissor );
    		state.setScissorTest( _currentScissorTest );

    		if ( isCube ) {

    			const textureProperties = properties.get( renderTarget.texture );
    			_gl.framebufferTexture2D( 36160, 36064, 34069 + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel );

    		} else if ( isRenderTarget3D ) {

    			const textureProperties = properties.get( renderTarget.texture );
    			const layer = activeCubeFace || 0;
    			_gl.framebufferTextureLayer( 36160, 36064, textureProperties.__webglTexture, activeMipmapLevel || 0, layer );

    		}

    		_currentMaterialId = - 1; // reset current material to ensure correct uniform bindings

    	};

    	this.readRenderTargetPixels = function ( renderTarget, x, y, width, height, buffer, activeCubeFaceIndex ) {

    		if ( ! ( renderTarget && renderTarget.isWebGLRenderTarget ) ) {

    			console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.' );
    			return;

    		}

    		let framebuffer = properties.get( renderTarget ).__webglFramebuffer;

    		if ( renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined ) {

    			framebuffer = framebuffer[ activeCubeFaceIndex ];

    		}

    		if ( framebuffer ) {

    			state.bindFramebuffer( 36160, framebuffer );

    			try {

    				const texture = renderTarget.texture;
    				const textureFormat = texture.format;
    				const textureType = texture.type;

    				if ( textureFormat !== RGBAFormat && utils.convert( textureFormat ) !== _gl.getParameter( 35739 ) ) {

    					console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.' );
    					return;

    				}

    				const halfFloatSupportedByExt = ( textureType === HalfFloatType ) && ( extensions.has( 'EXT_color_buffer_half_float' ) || ( capabilities.isWebGL2 && extensions.has( 'EXT_color_buffer_float' ) ) );

    				if ( textureType !== UnsignedByteType && utils.convert( textureType ) !== _gl.getParameter( 35738 ) && // Edge and Chrome Mac < 52 (#9513)
    					! ( textureType === FloatType && ( capabilities.isWebGL2 || extensions.has( 'OES_texture_float' ) || extensions.has( 'WEBGL_color_buffer_float' ) ) ) && // Chrome Mac >= 52 and Firefox
    					! halfFloatSupportedByExt ) {

    					console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.' );
    					return;

    				}

    				// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)

    				if ( ( x >= 0 && x <= ( renderTarget.width - width ) ) && ( y >= 0 && y <= ( renderTarget.height - height ) ) ) {

    					_gl.readPixels( x, y, width, height, utils.convert( textureFormat ), utils.convert( textureType ), buffer );

    				}

    			} finally {

    				// restore framebuffer of current render target if necessary

    				const framebuffer = ( _currentRenderTarget !== null ) ? properties.get( _currentRenderTarget ).__webglFramebuffer : null;
    				state.bindFramebuffer( 36160, framebuffer );

    			}

    		}

    	};

    	this.copyFramebufferToTexture = function ( position, texture, level = 0 ) {

    		const levelScale = Math.pow( 2, - level );
    		const width = Math.floor( texture.image.width * levelScale );
    		const height = Math.floor( texture.image.height * levelScale );

    		textures.setTexture2D( texture, 0 );

    		_gl.copyTexSubImage2D( 3553, level, 0, 0, position.x, position.y, width, height );

    		state.unbindTexture();

    	};

    	this.copyTextureToTexture = function ( position, srcTexture, dstTexture, level = 0 ) {

    		const width = srcTexture.image.width;
    		const height = srcTexture.image.height;
    		const glFormat = utils.convert( dstTexture.format );
    		const glType = utils.convert( dstTexture.type );

    		textures.setTexture2D( dstTexture, 0 );

    		// As another texture upload may have changed pixelStorei
    		// parameters, make sure they are correct for the dstTexture
    		_gl.pixelStorei( 37440, dstTexture.flipY );
    		_gl.pixelStorei( 37441, dstTexture.premultiplyAlpha );
    		_gl.pixelStorei( 3317, dstTexture.unpackAlignment );

    		if ( srcTexture.isDataTexture ) {

    			_gl.texSubImage2D( 3553, level, position.x, position.y, width, height, glFormat, glType, srcTexture.image.data );

    		} else {

    			if ( srcTexture.isCompressedTexture ) {

    				_gl.compressedTexSubImage2D( 3553, level, position.x, position.y, srcTexture.mipmaps[ 0 ].width, srcTexture.mipmaps[ 0 ].height, glFormat, srcTexture.mipmaps[ 0 ].data );

    			} else {

    				_gl.texSubImage2D( 3553, level, position.x, position.y, glFormat, glType, srcTexture.image );

    			}

    		}

    		// Generate mipmaps only when copying level 0
    		if ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( 3553 );

    		state.unbindTexture();

    	};

    	this.copyTextureToTexture3D = function ( sourceBox, position, srcTexture, dstTexture, level = 0 ) {

    		if ( _this.isWebGL1Renderer ) {

    			console.warn( 'THREE.WebGLRenderer.copyTextureToTexture3D: can only be used with WebGL2.' );
    			return;

    		}

    		const width = sourceBox.max.x - sourceBox.min.x + 1;
    		const height = sourceBox.max.y - sourceBox.min.y + 1;
    		const depth = sourceBox.max.z - sourceBox.min.z + 1;
    		const glFormat = utils.convert( dstTexture.format );
    		const glType = utils.convert( dstTexture.type );
    		let glTarget;

    		if ( dstTexture.isData3DTexture ) {

    			textures.setTexture3D( dstTexture, 0 );
    			glTarget = 32879;

    		} else if ( dstTexture.isDataArrayTexture ) {

    			textures.setTexture2DArray( dstTexture, 0 );
    			glTarget = 35866;

    		} else {

    			console.warn( 'THREE.WebGLRenderer.copyTextureToTexture3D: only supports THREE.DataTexture3D and THREE.DataTexture2DArray.' );
    			return;

    		}

    		_gl.pixelStorei( 37440, dstTexture.flipY );
    		_gl.pixelStorei( 37441, dstTexture.premultiplyAlpha );
    		_gl.pixelStorei( 3317, dstTexture.unpackAlignment );

    		const unpackRowLen = _gl.getParameter( 3314 );
    		const unpackImageHeight = _gl.getParameter( 32878 );
    		const unpackSkipPixels = _gl.getParameter( 3316 );
    		const unpackSkipRows = _gl.getParameter( 3315 );
    		const unpackSkipImages = _gl.getParameter( 32877 );

    		const image = srcTexture.isCompressedTexture ? srcTexture.mipmaps[ 0 ] : srcTexture.image;

    		_gl.pixelStorei( 3314, image.width );
    		_gl.pixelStorei( 32878, image.height );
    		_gl.pixelStorei( 3316, sourceBox.min.x );
    		_gl.pixelStorei( 3315, sourceBox.min.y );
    		_gl.pixelStorei( 32877, sourceBox.min.z );

    		if ( srcTexture.isDataTexture || srcTexture.isData3DTexture ) {

    			_gl.texSubImage3D( glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, glType, image.data );

    		} else {

    			if ( srcTexture.isCompressedTexture ) {

    				console.warn( 'THREE.WebGLRenderer.copyTextureToTexture3D: untested support for compressed srcTexture.' );
    				_gl.compressedTexSubImage3D( glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, image.data );

    			} else {

    				_gl.texSubImage3D( glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, glType, image );

    			}

    		}

    		_gl.pixelStorei( 3314, unpackRowLen );
    		_gl.pixelStorei( 32878, unpackImageHeight );
    		_gl.pixelStorei( 3316, unpackSkipPixels );
    		_gl.pixelStorei( 3315, unpackSkipRows );
    		_gl.pixelStorei( 32877, unpackSkipImages );

    		// Generate mipmaps only when copying level 0
    		if ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( glTarget );

    		state.unbindTexture();

    	};

    	this.initTexture = function ( texture ) {

    		if ( texture.isCubeTexture ) {

    			textures.setTextureCube( texture, 0 );

    		} else if ( texture.isData3DTexture ) {

    			textures.setTexture3D( texture, 0 );

    		} else if ( texture.isDataArrayTexture ) {

    			textures.setTexture2DArray( texture, 0 );

    		} else {

    			textures.setTexture2D( texture, 0 );

    		}

    		state.unbindTexture();

    	};

    	this.resetState = function () {

    		_currentActiveCubeFace = 0;
    		_currentActiveMipmapLevel = 0;
    		_currentRenderTarget = null;

    		state.reset();
    		bindingStates.reset();

    	};

    	if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {

    		__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );

    	}

    }

    class WebGL1Renderer extends WebGLRenderer {}

    WebGL1Renderer.prototype.isWebGL1Renderer = true;

    class FogExp2 {

    	constructor( color, density = 0.00025 ) {

    		this.isFogExp2 = true;

    		this.name = '';

    		this.color = new Color( color );
    		this.density = density;

    	}

    	clone() {

    		return new FogExp2( this.color, this.density );

    	}

    	toJSON( /* meta */ ) {

    		return {
    			type: 'FogExp2',
    			color: this.color.getHex(),
    			density: this.density
    		};

    	}

    }

    class Fog {

    	constructor( color, near = 1, far = 1000 ) {

    		this.isFog = true;

    		this.name = '';

    		this.color = new Color( color );

    		this.near = near;
    		this.far = far;

    	}

    	clone() {

    		return new Fog( this.color, this.near, this.far );

    	}

    	toJSON( /* meta */ ) {

    		return {
    			type: 'Fog',
    			color: this.color.getHex(),
    			near: this.near,
    			far: this.far
    		};

    	}

    }

    class Scene extends Object3D {

    	constructor() {

    		super();

    		this.isScene = true;

    		this.type = 'Scene';

    		this.background = null;
    		this.environment = null;
    		this.fog = null;

    		this.overrideMaterial = null;

    		if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {

    			__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );

    		}

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		if ( source.background !== null ) this.background = source.background.clone();
    		if ( source.environment !== null ) this.environment = source.environment.clone();
    		if ( source.fog !== null ) this.fog = source.fog.clone();

    		if ( source.overrideMaterial !== null ) this.overrideMaterial = source.overrideMaterial.clone();

    		this.matrixAutoUpdate = source.matrixAutoUpdate;

    		return this;

    	}

    	toJSON( meta ) {

    		const data = super.toJSON( meta );

    		if ( this.fog !== null ) data.object.fog = this.fog.toJSON();

    		return data;

    	}

    	// @deprecated

    	get autoUpdate() {

    		console.warn( 'THREE.Scene: autoUpdate was renamed to matrixWorldAutoUpdate in r144.' );
    		return this.matrixWorldAutoUpdate;

    	}

    	set autoUpdate( value ) {

    		console.warn( 'THREE.Scene: autoUpdate was renamed to matrixWorldAutoUpdate in r144.' );
    		this.matrixWorldAutoUpdate = value;

    	}

    }

    class InterleavedBuffer {

    	constructor( array, stride ) {

    		this.isInterleavedBuffer = true;

    		this.array = array;
    		this.stride = stride;
    		this.count = array !== undefined ? array.length / stride : 0;

    		this.usage = StaticDrawUsage;
    		this.updateRange = { offset: 0, count: - 1 };

    		this.version = 0;

    		this.uuid = generateUUID();

    	}

    	onUploadCallback() {}

    	set needsUpdate( value ) {

    		if ( value === true ) this.version ++;

    	}

    	setUsage( value ) {

    		this.usage = value;

    		return this;

    	}

    	copy( source ) {

    		this.array = new source.array.constructor( source.array );
    		this.count = source.count;
    		this.stride = source.stride;
    		this.usage = source.usage;

    		return this;

    	}

    	copyAt( index1, attribute, index2 ) {

    		index1 *= this.stride;
    		index2 *= attribute.stride;

    		for ( let i = 0, l = this.stride; i < l; i ++ ) {

    			this.array[ index1 + i ] = attribute.array[ index2 + i ];

    		}

    		return this;

    	}

    	set( value, offset = 0 ) {

    		this.array.set( value, offset );

    		return this;

    	}

    	clone( data ) {

    		if ( data.arrayBuffers === undefined ) {

    			data.arrayBuffers = {};

    		}

    		if ( this.array.buffer._uuid === undefined ) {

    			this.array.buffer._uuid = generateUUID();

    		}

    		if ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {

    			data.arrayBuffers[ this.array.buffer._uuid ] = this.array.slice( 0 ).buffer;

    		}

    		const array = new this.array.constructor( data.arrayBuffers[ this.array.buffer._uuid ] );

    		const ib = new this.constructor( array, this.stride );
    		ib.setUsage( this.usage );

    		return ib;

    	}

    	onUpload( callback ) {

    		this.onUploadCallback = callback;

    		return this;

    	}

    	toJSON( data ) {

    		if ( data.arrayBuffers === undefined ) {

    			data.arrayBuffers = {};

    		}

    		// generate UUID for array buffer if necessary

    		if ( this.array.buffer._uuid === undefined ) {

    			this.array.buffer._uuid = generateUUID();

    		}

    		if ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {

    			data.arrayBuffers[ this.array.buffer._uuid ] = Array.from( new Uint32Array( this.array.buffer ) );

    		}

    		//

    		return {
    			uuid: this.uuid,
    			buffer: this.array.buffer._uuid,
    			type: this.array.constructor.name,
    			stride: this.stride
    		};

    	}

    }

    const _vector$6 = /*@__PURE__*/ new Vector3();

    class InterleavedBufferAttribute {

    	constructor( interleavedBuffer, itemSize, offset, normalized = false ) {

    		this.isInterleavedBufferAttribute = true;

    		this.name = '';

    		this.data = interleavedBuffer;
    		this.itemSize = itemSize;
    		this.offset = offset;

    		this.normalized = normalized === true;

    	}

    	get count() {

    		return this.data.count;

    	}

    	get array() {

    		return this.data.array;

    	}

    	set needsUpdate( value ) {

    		this.data.needsUpdate = value;

    	}

    	applyMatrix4( m ) {

    		for ( let i = 0, l = this.data.count; i < l; i ++ ) {

    			_vector$6.fromBufferAttribute( this, i );

    			_vector$6.applyMatrix4( m );

    			this.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );

    		}

    		return this;

    	}

    	applyNormalMatrix( m ) {

    		for ( let i = 0, l = this.count; i < l; i ++ ) {

    			_vector$6.fromBufferAttribute( this, i );

    			_vector$6.applyNormalMatrix( m );

    			this.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );

    		}

    		return this;

    	}

    	transformDirection( m ) {

    		for ( let i = 0, l = this.count; i < l; i ++ ) {

    			_vector$6.fromBufferAttribute( this, i );

    			_vector$6.transformDirection( m );

    			this.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );

    		}

    		return this;

    	}

    	setX( index, x ) {

    		if ( this.normalized ) x = normalize( x, this.array );

    		this.data.array[ index * this.data.stride + this.offset ] = x;

    		return this;

    	}

    	setY( index, y ) {

    		if ( this.normalized ) y = normalize( y, this.array );

    		this.data.array[ index * this.data.stride + this.offset + 1 ] = y;

    		return this;

    	}

    	setZ( index, z ) {

    		if ( this.normalized ) z = normalize( z, this.array );

    		this.data.array[ index * this.data.stride + this.offset + 2 ] = z;

    		return this;

    	}

    	setW( index, w ) {

    		if ( this.normalized ) w = normalize( w, this.array );

    		this.data.array[ index * this.data.stride + this.offset + 3 ] = w;

    		return this;

    	}

    	getX( index ) {

    		let x = this.data.array[ index * this.data.stride + this.offset ];

    		if ( this.normalized ) x = denormalize( x, this.array );

    		return x;

    	}

    	getY( index ) {

    		let y = this.data.array[ index * this.data.stride + this.offset + 1 ];

    		if ( this.normalized ) y = denormalize( y, this.array );

    		return y;

    	}

    	getZ( index ) {

    		let z = this.data.array[ index * this.data.stride + this.offset + 2 ];

    		if ( this.normalized ) z = denormalize( z, this.array );

    		return z;

    	}

    	getW( index ) {

    		let w = this.data.array[ index * this.data.stride + this.offset + 3 ];

    		if ( this.normalized ) w = denormalize( w, this.array );

    		return w;

    	}

    	setXY( index, x, y ) {

    		index = index * this.data.stride + this.offset;

    		if ( this.normalized ) {

    			x = normalize( x, this.array );
    			y = normalize( y, this.array );

    		}

    		this.data.array[ index + 0 ] = x;
    		this.data.array[ index + 1 ] = y;

    		return this;

    	}

    	setXYZ( index, x, y, z ) {

    		index = index * this.data.stride + this.offset;

    		if ( this.normalized ) {

    			x = normalize( x, this.array );
    			y = normalize( y, this.array );
    			z = normalize( z, this.array );

    		}

    		this.data.array[ index + 0 ] = x;
    		this.data.array[ index + 1 ] = y;
    		this.data.array[ index + 2 ] = z;

    		return this;

    	}

    	setXYZW( index, x, y, z, w ) {

    		index = index * this.data.stride + this.offset;

    		if ( this.normalized ) {

    			x = normalize( x, this.array );
    			y = normalize( y, this.array );
    			z = normalize( z, this.array );
    			w = normalize( w, this.array );

    		}

    		this.data.array[ index + 0 ] = x;
    		this.data.array[ index + 1 ] = y;
    		this.data.array[ index + 2 ] = z;
    		this.data.array[ index + 3 ] = w;

    		return this;

    	}

    	clone( data ) {

    		if ( data === undefined ) {

    			console.log( 'THREE.InterleavedBufferAttribute.clone(): Cloning an interleaved buffer attribute will deinterleave buffer data.' );

    			const array = [];

    			for ( let i = 0; i < this.count; i ++ ) {

    				const index = i * this.data.stride + this.offset;

    				for ( let j = 0; j < this.itemSize; j ++ ) {

    					array.push( this.data.array[ index + j ] );

    				}

    			}

    			return new BufferAttribute( new this.array.constructor( array ), this.itemSize, this.normalized );

    		} else {

    			if ( data.interleavedBuffers === undefined ) {

    				data.interleavedBuffers = {};

    			}

    			if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {

    				data.interleavedBuffers[ this.data.uuid ] = this.data.clone( data );

    			}

    			return new InterleavedBufferAttribute( data.interleavedBuffers[ this.data.uuid ], this.itemSize, this.offset, this.normalized );

    		}

    	}

    	toJSON( data ) {

    		if ( data === undefined ) {

    			console.log( 'THREE.InterleavedBufferAttribute.toJSON(): Serializing an interleaved buffer attribute will deinterleave buffer data.' );

    			const array = [];

    			for ( let i = 0; i < this.count; i ++ ) {

    				const index = i * this.data.stride + this.offset;

    				for ( let j = 0; j < this.itemSize; j ++ ) {

    					array.push( this.data.array[ index + j ] );

    				}

    			}

    			// deinterleave data and save it as an ordinary buffer attribute for now

    			return {
    				itemSize: this.itemSize,
    				type: this.array.constructor.name,
    				array: array,
    				normalized: this.normalized
    			};

    		} else {

    			// save as true interleaved attribtue

    			if ( data.interleavedBuffers === undefined ) {

    				data.interleavedBuffers = {};

    			}

    			if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {

    				data.interleavedBuffers[ this.data.uuid ] = this.data.toJSON( data );

    			}

    			return {
    				isInterleavedBufferAttribute: true,
    				itemSize: this.itemSize,
    				data: this.data.uuid,
    				offset: this.offset,
    				normalized: this.normalized
    			};

    		}

    	}

    }

    class SpriteMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isSpriteMaterial = true;

    		this.type = 'SpriteMaterial';

    		this.color = new Color( 0xffffff );

    		this.map = null;

    		this.alphaMap = null;

    		this.rotation = 0;

    		this.sizeAttenuation = true;

    		this.transparent = true;

    		this.fog = true;

    		this.setValues( parameters );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.color.copy( source.color );

    		this.map = source.map;

    		this.alphaMap = source.alphaMap;

    		this.rotation = source.rotation;

    		this.sizeAttenuation = source.sizeAttenuation;

    		this.fog = source.fog;

    		return this;

    	}

    }

    let _geometry;

    const _intersectPoint = /*@__PURE__*/ new Vector3();
    const _worldScale = /*@__PURE__*/ new Vector3();
    const _mvPosition = /*@__PURE__*/ new Vector3();

    const _alignedPosition = /*@__PURE__*/ new Vector2();
    const _rotatedPosition = /*@__PURE__*/ new Vector2();
    const _viewWorldMatrix = /*@__PURE__*/ new Matrix4();

    const _vA = /*@__PURE__*/ new Vector3();
    const _vB = /*@__PURE__*/ new Vector3();
    const _vC = /*@__PURE__*/ new Vector3();

    const _uvA = /*@__PURE__*/ new Vector2();
    const _uvB = /*@__PURE__*/ new Vector2();
    const _uvC = /*@__PURE__*/ new Vector2();

    class Sprite extends Object3D {

    	constructor( material ) {

    		super();

    		this.isSprite = true;

    		this.type = 'Sprite';

    		if ( _geometry === undefined ) {

    			_geometry = new BufferGeometry();

    			const float32Array = new Float32Array( [
    				- 0.5, - 0.5, 0, 0, 0,
    				0.5, - 0.5, 0, 1, 0,
    				0.5, 0.5, 0, 1, 1,
    				- 0.5, 0.5, 0, 0, 1
    			] );

    			const interleavedBuffer = new InterleavedBuffer( float32Array, 5 );

    			_geometry.setIndex( [ 0, 1, 2,	0, 2, 3 ] );
    			_geometry.setAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );
    			_geometry.setAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );

    		}

    		this.geometry = _geometry;
    		this.material = ( material !== undefined ) ? material : new SpriteMaterial();

    		this.center = new Vector2( 0.5, 0.5 );

    	}

    	raycast( raycaster, intersects ) {

    		if ( raycaster.camera === null ) {

    			console.error( 'THREE.Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.' );

    		}

    		_worldScale.setFromMatrixScale( this.matrixWorld );

    		_viewWorldMatrix.copy( raycaster.camera.matrixWorld );
    		this.modelViewMatrix.multiplyMatrices( raycaster.camera.matrixWorldInverse, this.matrixWorld );

    		_mvPosition.setFromMatrixPosition( this.modelViewMatrix );

    		if ( raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false ) {

    			_worldScale.multiplyScalar( - _mvPosition.z );

    		}

    		const rotation = this.material.rotation;
    		let sin, cos;

    		if ( rotation !== 0 ) {

    			cos = Math.cos( rotation );
    			sin = Math.sin( rotation );

    		}

    		const center = this.center;

    		transformVertex( _vA.set( - 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
    		transformVertex( _vB.set( 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
    		transformVertex( _vC.set( 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );

    		_uvA.set( 0, 0 );
    		_uvB.set( 1, 0 );
    		_uvC.set( 1, 1 );

    		// check first triangle
    		let intersect = raycaster.ray.intersectTriangle( _vA, _vB, _vC, false, _intersectPoint );

    		if ( intersect === null ) {

    			// check second triangle
    			transformVertex( _vB.set( - 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
    			_uvB.set( 0, 1 );

    			intersect = raycaster.ray.intersectTriangle( _vA, _vC, _vB, false, _intersectPoint );
    			if ( intersect === null ) {

    				return;

    			}

    		}

    		const distance = raycaster.ray.origin.distanceTo( _intersectPoint );

    		if ( distance < raycaster.near || distance > raycaster.far ) return;

    		intersects.push( {

    			distance: distance,
    			point: _intersectPoint.clone(),
    			uv: Triangle.getUV( _intersectPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() ),
    			face: null,
    			object: this

    		} );

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		if ( source.center !== undefined ) this.center.copy( source.center );

    		this.material = source.material;

    		return this;

    	}

    }

    function transformVertex( vertexPosition, mvPosition, center, scale, sin, cos ) {

    	// compute position in camera space
    	_alignedPosition.subVectors( vertexPosition, center ).addScalar( 0.5 ).multiply( scale );

    	// to check if rotation is not zero
    	if ( sin !== undefined ) {

    		_rotatedPosition.x = ( cos * _alignedPosition.x ) - ( sin * _alignedPosition.y );
    		_rotatedPosition.y = ( sin * _alignedPosition.x ) + ( cos * _alignedPosition.y );

    	} else {

    		_rotatedPosition.copy( _alignedPosition );

    	}


    	vertexPosition.copy( mvPosition );
    	vertexPosition.x += _rotatedPosition.x;
    	vertexPosition.y += _rotatedPosition.y;

    	// transform to world space
    	vertexPosition.applyMatrix4( _viewWorldMatrix );

    }

    const _v1$2 = /*@__PURE__*/ new Vector3();
    const _v2$1 = /*@__PURE__*/ new Vector3();

    class LOD extends Object3D {

    	constructor() {

    		super();

    		this._currentLevel = 0;

    		this.type = 'LOD';

    		Object.defineProperties( this, {
    			levels: {
    				enumerable: true,
    				value: []
    			},
    			isLOD: {
    				value: true,
    			}
    		} );

    		this.autoUpdate = true;

    	}

    	copy( source ) {

    		super.copy( source, false );

    		const levels = source.levels;

    		for ( let i = 0, l = levels.length; i < l; i ++ ) {

    			const level = levels[ i ];

    			this.addLevel( level.object.clone(), level.distance );

    		}

    		this.autoUpdate = source.autoUpdate;

    		return this;

    	}

    	addLevel( object, distance = 0 ) {

    		distance = Math.abs( distance );

    		const levels = this.levels;

    		let l;

    		for ( l = 0; l < levels.length; l ++ ) {

    			if ( distance < levels[ l ].distance ) {

    				break;

    			}

    		}

    		levels.splice( l, 0, { distance: distance, object: object } );

    		this.add( object );

    		return this;

    	}

    	getCurrentLevel() {

    		return this._currentLevel;

    	}

    	getObjectForDistance( distance ) {

    		const levels = this.levels;

    		if ( levels.length > 0 ) {

    			let i, l;

    			for ( i = 1, l = levels.length; i < l; i ++ ) {

    				if ( distance < levels[ i ].distance ) {

    					break;

    				}

    			}

    			return levels[ i - 1 ].object;

    		}

    		return null;

    	}

    	raycast( raycaster, intersects ) {

    		const levels = this.levels;

    		if ( levels.length > 0 ) {

    			_v1$2.setFromMatrixPosition( this.matrixWorld );

    			const distance = raycaster.ray.origin.distanceTo( _v1$2 );

    			this.getObjectForDistance( distance ).raycast( raycaster, intersects );

    		}

    	}

    	update( camera ) {

    		const levels = this.levels;

    		if ( levels.length > 1 ) {

    			_v1$2.setFromMatrixPosition( camera.matrixWorld );
    			_v2$1.setFromMatrixPosition( this.matrixWorld );

    			const distance = _v1$2.distanceTo( _v2$1 ) / camera.zoom;

    			levels[ 0 ].object.visible = true;

    			let i, l;

    			for ( i = 1, l = levels.length; i < l; i ++ ) {

    				if ( distance >= levels[ i ].distance ) {

    					levels[ i - 1 ].object.visible = false;
    					levels[ i ].object.visible = true;

    				} else {

    					break;

    				}

    			}

    			this._currentLevel = i - 1;

    			for ( ; i < l; i ++ ) {

    				levels[ i ].object.visible = false;

    			}

    		}

    	}

    	toJSON( meta ) {

    		const data = super.toJSON( meta );

    		if ( this.autoUpdate === false ) data.object.autoUpdate = false;

    		data.object.levels = [];

    		const levels = this.levels;

    		for ( let i = 0, l = levels.length; i < l; i ++ ) {

    			const level = levels[ i ];

    			data.object.levels.push( {
    				object: level.object.uuid,
    				distance: level.distance
    			} );

    		}

    		return data;

    	}

    }

    const _basePosition = /*@__PURE__*/ new Vector3();

    const _skinIndex = /*@__PURE__*/ new Vector4();
    const _skinWeight = /*@__PURE__*/ new Vector4();

    const _vector$5 = /*@__PURE__*/ new Vector3();
    const _matrix = /*@__PURE__*/ new Matrix4();

    class SkinnedMesh extends Mesh {

    	constructor( geometry, material ) {

    		super( geometry, material );

    		this.isSkinnedMesh = true;

    		this.type = 'SkinnedMesh';

    		this.bindMode = 'attached';
    		this.bindMatrix = new Matrix4();
    		this.bindMatrixInverse = new Matrix4();

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		this.bindMode = source.bindMode;
    		this.bindMatrix.copy( source.bindMatrix );
    		this.bindMatrixInverse.copy( source.bindMatrixInverse );

    		this.skeleton = source.skeleton;

    		return this;

    	}

    	bind( skeleton, bindMatrix ) {

    		this.skeleton = skeleton;

    		if ( bindMatrix === undefined ) {

    			this.updateMatrixWorld( true );

    			this.skeleton.calculateInverses();

    			bindMatrix = this.matrixWorld;

    		}

    		this.bindMatrix.copy( bindMatrix );
    		this.bindMatrixInverse.copy( bindMatrix ).invert();

    	}

    	pose() {

    		this.skeleton.pose();

    	}

    	normalizeSkinWeights() {

    		const vector = new Vector4();

    		const skinWeight = this.geometry.attributes.skinWeight;

    		for ( let i = 0, l = skinWeight.count; i < l; i ++ ) {

    			vector.fromBufferAttribute( skinWeight, i );

    			const scale = 1.0 / vector.manhattanLength();

    			if ( scale !== Infinity ) {

    				vector.multiplyScalar( scale );

    			} else {

    				vector.set( 1, 0, 0, 0 ); // do something reasonable

    			}

    			skinWeight.setXYZW( i, vector.x, vector.y, vector.z, vector.w );

    		}

    	}

    	updateMatrixWorld( force ) {

    		super.updateMatrixWorld( force );

    		if ( this.bindMode === 'attached' ) {

    			this.bindMatrixInverse.copy( this.matrixWorld ).invert();

    		} else if ( this.bindMode === 'detached' ) {

    			this.bindMatrixInverse.copy( this.bindMatrix ).invert();

    		} else {

    			console.warn( 'THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode );

    		}

    	}

    	boneTransform( index, target ) {

    		const skeleton = this.skeleton;
    		const geometry = this.geometry;

    		_skinIndex.fromBufferAttribute( geometry.attributes.skinIndex, index );
    		_skinWeight.fromBufferAttribute( geometry.attributes.skinWeight, index );

    		_basePosition.copy( target ).applyMatrix4( this.bindMatrix );

    		target.set( 0, 0, 0 );

    		for ( let i = 0; i < 4; i ++ ) {

    			const weight = _skinWeight.getComponent( i );

    			if ( weight !== 0 ) {

    				const boneIndex = _skinIndex.getComponent( i );

    				_matrix.multiplyMatrices( skeleton.bones[ boneIndex ].matrixWorld, skeleton.boneInverses[ boneIndex ] );

    				target.addScaledVector( _vector$5.copy( _basePosition ).applyMatrix4( _matrix ), weight );

    			}

    		}

    		return target.applyMatrix4( this.bindMatrixInverse );

    	}

    }

    class Bone extends Object3D {

    	constructor() {

    		super();

    		this.isBone = true;

    		this.type = 'Bone';

    	}

    }

    class DataTexture extends Texture {

    	constructor( data = null, width = 1, height = 1, format, type, mapping, wrapS, wrapT, magFilter = NearestFilter, minFilter = NearestFilter, anisotropy, encoding ) {

    		super( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );

    		this.isDataTexture = true;

    		this.image = { data: data, width: width, height: height };

    		this.generateMipmaps = false;
    		this.flipY = false;
    		this.unpackAlignment = 1;

    	}

    }

    const _offsetMatrix = /*@__PURE__*/ new Matrix4();
    const _identityMatrix = /*@__PURE__*/ new Matrix4();

    class Skeleton {

    	constructor( bones = [], boneInverses = [] ) {

    		this.uuid = generateUUID();

    		this.bones = bones.slice( 0 );
    		this.boneInverses = boneInverses;
    		this.boneMatrices = null;

    		this.boneTexture = null;
    		this.boneTextureSize = 0;

    		this.frame = - 1;

    		this.init();

    	}

    	init() {

    		const bones = this.bones;
    		const boneInverses = this.boneInverses;

    		this.boneMatrices = new Float32Array( bones.length * 16 );

    		// calculate inverse bone matrices if necessary

    		if ( boneInverses.length === 0 ) {

    			this.calculateInverses();

    		} else {

    			// handle special case

    			if ( bones.length !== boneInverses.length ) {

    				console.warn( 'THREE.Skeleton: Number of inverse bone matrices does not match amount of bones.' );

    				this.boneInverses = [];

    				for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

    					this.boneInverses.push( new Matrix4() );

    				}

    			}

    		}

    	}

    	calculateInverses() {

    		this.boneInverses.length = 0;

    		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

    			const inverse = new Matrix4();

    			if ( this.bones[ i ] ) {

    				inverse.copy( this.bones[ i ].matrixWorld ).invert();

    			}

    			this.boneInverses.push( inverse );

    		}

    	}

    	pose() {

    		// recover the bind-time world matrices

    		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

    			const bone = this.bones[ i ];

    			if ( bone ) {

    				bone.matrixWorld.copy( this.boneInverses[ i ] ).invert();

    			}

    		}

    		// compute the local matrices, positions, rotations and scales

    		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

    			const bone = this.bones[ i ];

    			if ( bone ) {

    				if ( bone.parent && bone.parent.isBone ) {

    					bone.matrix.copy( bone.parent.matrixWorld ).invert();
    					bone.matrix.multiply( bone.matrixWorld );

    				} else {

    					bone.matrix.copy( bone.matrixWorld );

    				}

    				bone.matrix.decompose( bone.position, bone.quaternion, bone.scale );

    			}

    		}

    	}

    	update() {

    		const bones = this.bones;
    		const boneInverses = this.boneInverses;
    		const boneMatrices = this.boneMatrices;
    		const boneTexture = this.boneTexture;

    		// flatten bone matrices to array

    		for ( let i = 0, il = bones.length; i < il; i ++ ) {

    			// compute the offset between the current and the original transform

    			const matrix = bones[ i ] ? bones[ i ].matrixWorld : _identityMatrix;

    			_offsetMatrix.multiplyMatrices( matrix, boneInverses[ i ] );
    			_offsetMatrix.toArray( boneMatrices, i * 16 );

    		}

    		if ( boneTexture !== null ) {

    			boneTexture.needsUpdate = true;

    		}

    	}

    	clone() {

    		return new Skeleton( this.bones, this.boneInverses );

    	}

    	computeBoneTexture() {

    		// layout (1 matrix = 4 pixels)
    		//      RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)
    		//  with  8x8  pixel texture max   16 bones * 4 pixels =  (8 * 8)
    		//       16x16 pixel texture max   64 bones * 4 pixels = (16 * 16)
    		//       32x32 pixel texture max  256 bones * 4 pixels = (32 * 32)
    		//       64x64 pixel texture max 1024 bones * 4 pixels = (64 * 64)

    		let size = Math.sqrt( this.bones.length * 4 ); // 4 pixels needed for 1 matrix
    		size = ceilPowerOfTwo( size );
    		size = Math.max( size, 4 );

    		const boneMatrices = new Float32Array( size * size * 4 ); // 4 floats per RGBA pixel
    		boneMatrices.set( this.boneMatrices ); // copy current values

    		const boneTexture = new DataTexture( boneMatrices, size, size, RGBAFormat, FloatType );
    		boneTexture.needsUpdate = true;

    		this.boneMatrices = boneMatrices;
    		this.boneTexture = boneTexture;
    		this.boneTextureSize = size;

    		return this;

    	}

    	getBoneByName( name ) {

    		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

    			const bone = this.bones[ i ];

    			if ( bone.name === name ) {

    				return bone;

    			}

    		}

    		return undefined;

    	}

    	dispose( ) {

    		if ( this.boneTexture !== null ) {

    			this.boneTexture.dispose();

    			this.boneTexture = null;

    		}

    	}

    	fromJSON( json, bones ) {

    		this.uuid = json.uuid;

    		for ( let i = 0, l = json.bones.length; i < l; i ++ ) {

    			const uuid = json.bones[ i ];
    			let bone = bones[ uuid ];

    			if ( bone === undefined ) {

    				console.warn( 'THREE.Skeleton: No bone found with UUID:', uuid );
    				bone = new Bone();

    			}

    			this.bones.push( bone );
    			this.boneInverses.push( new Matrix4().fromArray( json.boneInverses[ i ] ) );

    		}

    		this.init();

    		return this;

    	}

    	toJSON() {

    		const data = {
    			metadata: {
    				version: 4.5,
    				type: 'Skeleton',
    				generator: 'Skeleton.toJSON'
    			},
    			bones: [],
    			boneInverses: []
    		};

    		data.uuid = this.uuid;

    		const bones = this.bones;
    		const boneInverses = this.boneInverses;

    		for ( let i = 0, l = bones.length; i < l; i ++ ) {

    			const bone = bones[ i ];
    			data.bones.push( bone.uuid );

    			const boneInverse = boneInverses[ i ];
    			data.boneInverses.push( boneInverse.toArray() );

    		}

    		return data;

    	}

    }

    class InstancedBufferAttribute extends BufferAttribute {

    	constructor( array, itemSize, normalized, meshPerAttribute = 1 ) {

    		super( array, itemSize, normalized );

    		this.isInstancedBufferAttribute = true;

    		this.meshPerAttribute = meshPerAttribute;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.meshPerAttribute = source.meshPerAttribute;

    		return this;

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.meshPerAttribute = this.meshPerAttribute;

    		data.isInstancedBufferAttribute = true;

    		return data;

    	}

    }

    const _instanceLocalMatrix = /*@__PURE__*/ new Matrix4();
    const _instanceWorldMatrix = /*@__PURE__*/ new Matrix4();

    const _instanceIntersects = [];

    const _mesh = /*@__PURE__*/ new Mesh();

    class InstancedMesh extends Mesh {

    	constructor( geometry, material, count ) {

    		super( geometry, material );

    		this.isInstancedMesh = true;

    		this.instanceMatrix = new InstancedBufferAttribute( new Float32Array( count * 16 ), 16 );
    		this.instanceColor = null;

    		this.count = count;

    		this.frustumCulled = false;

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		this.instanceMatrix.copy( source.instanceMatrix );

    		if ( source.instanceColor !== null ) this.instanceColor = source.instanceColor.clone();

    		this.count = source.count;

    		return this;

    	}

    	getColorAt( index, color ) {

    		color.fromArray( this.instanceColor.array, index * 3 );

    	}

    	getMatrixAt( index, matrix ) {

    		matrix.fromArray( this.instanceMatrix.array, index * 16 );

    	}

    	raycast( raycaster, intersects ) {

    		const matrixWorld = this.matrixWorld;
    		const raycastTimes = this.count;

    		_mesh.geometry = this.geometry;
    		_mesh.material = this.material;

    		if ( _mesh.material === undefined ) return;

    		for ( let instanceId = 0; instanceId < raycastTimes; instanceId ++ ) {

    			// calculate the world matrix for each instance

    			this.getMatrixAt( instanceId, _instanceLocalMatrix );

    			_instanceWorldMatrix.multiplyMatrices( matrixWorld, _instanceLocalMatrix );

    			// the mesh represents this single instance

    			_mesh.matrixWorld = _instanceWorldMatrix;

    			_mesh.raycast( raycaster, _instanceIntersects );

    			// process the result of raycast

    			for ( let i = 0, l = _instanceIntersects.length; i < l; i ++ ) {

    				const intersect = _instanceIntersects[ i ];
    				intersect.instanceId = instanceId;
    				intersect.object = this;
    				intersects.push( intersect );

    			}

    			_instanceIntersects.length = 0;

    		}

    	}

    	setColorAt( index, color ) {

    		if ( this.instanceColor === null ) {

    			this.instanceColor = new InstancedBufferAttribute( new Float32Array( this.instanceMatrix.count * 3 ), 3 );

    		}

    		color.toArray( this.instanceColor.array, index * 3 );

    	}

    	setMatrixAt( index, matrix ) {

    		matrix.toArray( this.instanceMatrix.array, index * 16 );

    	}

    	updateMorphTargets() {

    	}

    	dispose() {

    		this.dispatchEvent( { type: 'dispose' } );

    	}

    }

    class LineBasicMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isLineBasicMaterial = true;

    		this.type = 'LineBasicMaterial';

    		this.color = new Color( 0xffffff );

    		this.linewidth = 1;
    		this.linecap = 'round';
    		this.linejoin = 'round';

    		this.fog = true;

    		this.setValues( parameters );

    	}


    	copy( source ) {

    		super.copy( source );

    		this.color.copy( source.color );

    		this.linewidth = source.linewidth;
    		this.linecap = source.linecap;
    		this.linejoin = source.linejoin;

    		this.fog = source.fog;

    		return this;

    	}

    }

    const _start$1 = /*@__PURE__*/ new Vector3();
    const _end$1 = /*@__PURE__*/ new Vector3();
    const _inverseMatrix$1 = /*@__PURE__*/ new Matrix4();
    const _ray$1 = /*@__PURE__*/ new Ray();
    const _sphere$1 = /*@__PURE__*/ new Sphere();

    class Line extends Object3D {

    	constructor( geometry = new BufferGeometry(), material = new LineBasicMaterial() ) {

    		super();

    		this.isLine = true;

    		this.type = 'Line';

    		this.geometry = geometry;
    		this.material = material;

    		this.updateMorphTargets();

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		this.material = source.material;
    		this.geometry = source.geometry;

    		return this;

    	}

    	computeLineDistances() {

    		const geometry = this.geometry;

    		// we assume non-indexed geometry

    		if ( geometry.index === null ) {

    			const positionAttribute = geometry.attributes.position;
    			const lineDistances = [ 0 ];

    			for ( let i = 1, l = positionAttribute.count; i < l; i ++ ) {

    				_start$1.fromBufferAttribute( positionAttribute, i - 1 );
    				_end$1.fromBufferAttribute( positionAttribute, i );

    				lineDistances[ i ] = lineDistances[ i - 1 ];
    				lineDistances[ i ] += _start$1.distanceTo( _end$1 );

    			}

    			geometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );

    		} else {

    			console.warn( 'THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );

    		}

    		return this;

    	}

    	raycast( raycaster, intersects ) {

    		const geometry = this.geometry;
    		const matrixWorld = this.matrixWorld;
    		const threshold = raycaster.params.Line.threshold;
    		const drawRange = geometry.drawRange;

    		// Checking boundingSphere distance to ray

    		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

    		_sphere$1.copy( geometry.boundingSphere );
    		_sphere$1.applyMatrix4( matrixWorld );
    		_sphere$1.radius += threshold;

    		if ( raycaster.ray.intersectsSphere( _sphere$1 ) === false ) return;

    		//

    		_inverseMatrix$1.copy( matrixWorld ).invert();
    		_ray$1.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$1 );

    		const localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
    		const localThresholdSq = localThreshold * localThreshold;

    		const vStart = new Vector3();
    		const vEnd = new Vector3();
    		const interSegment = new Vector3();
    		const interRay = new Vector3();
    		const step = this.isLineSegments ? 2 : 1;

    		const index = geometry.index;
    		const attributes = geometry.attributes;
    		const positionAttribute = attributes.position;

    		if ( index !== null ) {

    			const start = Math.max( 0, drawRange.start );
    			const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );

    			for ( let i = start, l = end - 1; i < l; i += step ) {

    				const a = index.getX( i );
    				const b = index.getX( i + 1 );

    				vStart.fromBufferAttribute( positionAttribute, a );
    				vEnd.fromBufferAttribute( positionAttribute, b );

    				const distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );

    				if ( distSq > localThresholdSq ) continue;

    				interRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation

    				const distance = raycaster.ray.origin.distanceTo( interRay );

    				if ( distance < raycaster.near || distance > raycaster.far ) continue;

    				intersects.push( {

    					distance: distance,
    					// What do we want? intersection point on the ray or on the segment??
    					// point: raycaster.ray.at( distance ),
    					point: interSegment.clone().applyMatrix4( this.matrixWorld ),
    					index: i,
    					face: null,
    					faceIndex: null,
    					object: this

    				} );

    			}

    		} else {

    			const start = Math.max( 0, drawRange.start );
    			const end = Math.min( positionAttribute.count, ( drawRange.start + drawRange.count ) );

    			for ( let i = start, l = end - 1; i < l; i += step ) {

    				vStart.fromBufferAttribute( positionAttribute, i );
    				vEnd.fromBufferAttribute( positionAttribute, i + 1 );

    				const distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );

    				if ( distSq > localThresholdSq ) continue;

    				interRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation

    				const distance = raycaster.ray.origin.distanceTo( interRay );

    				if ( distance < raycaster.near || distance > raycaster.far ) continue;

    				intersects.push( {

    					distance: distance,
    					// What do we want? intersection point on the ray or on the segment??
    					// point: raycaster.ray.at( distance ),
    					point: interSegment.clone().applyMatrix4( this.matrixWorld ),
    					index: i,
    					face: null,
    					faceIndex: null,
    					object: this

    				} );

    			}

    		}

    	}

    	updateMorphTargets() {

    		const geometry = this.geometry;

    		const morphAttributes = geometry.morphAttributes;
    		const keys = Object.keys( morphAttributes );

    		if ( keys.length > 0 ) {

    			const morphAttribute = morphAttributes[ keys[ 0 ] ];

    			if ( morphAttribute !== undefined ) {

    				this.morphTargetInfluences = [];
    				this.morphTargetDictionary = {};

    				for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {

    					const name = morphAttribute[ m ].name || String( m );

    					this.morphTargetInfluences.push( 0 );
    					this.morphTargetDictionary[ name ] = m;

    				}

    			}

    		}

    	}

    }

    const _start = /*@__PURE__*/ new Vector3();
    const _end = /*@__PURE__*/ new Vector3();

    class LineSegments extends Line {

    	constructor( geometry, material ) {

    		super( geometry, material );

    		this.isLineSegments = true;

    		this.type = 'LineSegments';

    	}

    	computeLineDistances() {

    		const geometry = this.geometry;

    		// we assume non-indexed geometry

    		if ( geometry.index === null ) {

    			const positionAttribute = geometry.attributes.position;
    			const lineDistances = [];

    			for ( let i = 0, l = positionAttribute.count; i < l; i += 2 ) {

    				_start.fromBufferAttribute( positionAttribute, i );
    				_end.fromBufferAttribute( positionAttribute, i + 1 );

    				lineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];
    				lineDistances[ i + 1 ] = lineDistances[ i ] + _start.distanceTo( _end );

    			}

    			geometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );

    		} else {

    			console.warn( 'THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );

    		}

    		return this;

    	}

    }

    class LineLoop extends Line {

    	constructor( geometry, material ) {

    		super( geometry, material );

    		this.isLineLoop = true;

    		this.type = 'LineLoop';

    	}

    }

    class PointsMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isPointsMaterial = true;

    		this.type = 'PointsMaterial';

    		this.color = new Color( 0xffffff );

    		this.map = null;

    		this.alphaMap = null;

    		this.size = 1;
    		this.sizeAttenuation = true;

    		this.fog = true;

    		this.setValues( parameters );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.color.copy( source.color );

    		this.map = source.map;

    		this.alphaMap = source.alphaMap;

    		this.size = source.size;
    		this.sizeAttenuation = source.sizeAttenuation;

    		this.fog = source.fog;

    		return this;

    	}

    }

    const _inverseMatrix = /*@__PURE__*/ new Matrix4();
    const _ray = /*@__PURE__*/ new Ray();
    const _sphere = /*@__PURE__*/ new Sphere();
    const _position$2 = /*@__PURE__*/ new Vector3();

    class Points extends Object3D {

    	constructor( geometry = new BufferGeometry(), material = new PointsMaterial() ) {

    		super();

    		this.isPoints = true;

    		this.type = 'Points';

    		this.geometry = geometry;
    		this.material = material;

    		this.updateMorphTargets();

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		this.material = source.material;
    		this.geometry = source.geometry;

    		return this;

    	}

    	raycast( raycaster, intersects ) {

    		const geometry = this.geometry;
    		const matrixWorld = this.matrixWorld;
    		const threshold = raycaster.params.Points.threshold;
    		const drawRange = geometry.drawRange;

    		// Checking boundingSphere distance to ray

    		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

    		_sphere.copy( geometry.boundingSphere );
    		_sphere.applyMatrix4( matrixWorld );
    		_sphere.radius += threshold;

    		if ( raycaster.ray.intersectsSphere( _sphere ) === false ) return;

    		//

    		_inverseMatrix.copy( matrixWorld ).invert();
    		_ray.copy( raycaster.ray ).applyMatrix4( _inverseMatrix );

    		const localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
    		const localThresholdSq = localThreshold * localThreshold;

    		const index = geometry.index;
    		const attributes = geometry.attributes;
    		const positionAttribute = attributes.position;

    		if ( index !== null ) {

    			const start = Math.max( 0, drawRange.start );
    			const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );

    			for ( let i = start, il = end; i < il; i ++ ) {

    				const a = index.getX( i );

    				_position$2.fromBufferAttribute( positionAttribute, a );

    				testPoint( _position$2, a, localThresholdSq, matrixWorld, raycaster, intersects, this );

    			}

    		} else {

    			const start = Math.max( 0, drawRange.start );
    			const end = Math.min( positionAttribute.count, ( drawRange.start + drawRange.count ) );

    			for ( let i = start, l = end; i < l; i ++ ) {

    				_position$2.fromBufferAttribute( positionAttribute, i );

    				testPoint( _position$2, i, localThresholdSq, matrixWorld, raycaster, intersects, this );

    			}

    		}

    	}

    	updateMorphTargets() {

    		const geometry = this.geometry;

    		const morphAttributes = geometry.morphAttributes;
    		const keys = Object.keys( morphAttributes );

    		if ( keys.length > 0 ) {

    			const morphAttribute = morphAttributes[ keys[ 0 ] ];

    			if ( morphAttribute !== undefined ) {

    				this.morphTargetInfluences = [];
    				this.morphTargetDictionary = {};

    				for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {

    					const name = morphAttribute[ m ].name || String( m );

    					this.morphTargetInfluences.push( 0 );
    					this.morphTargetDictionary[ name ] = m;

    				}

    			}

    		}

    	}

    }

    function testPoint( point, index, localThresholdSq, matrixWorld, raycaster, intersects, object ) {

    	const rayPointDistanceSq = _ray.distanceSqToPoint( point );

    	if ( rayPointDistanceSq < localThresholdSq ) {

    		const intersectPoint = new Vector3();

    		_ray.closestPointToPoint( point, intersectPoint );
    		intersectPoint.applyMatrix4( matrixWorld );

    		const distance = raycaster.ray.origin.distanceTo( intersectPoint );

    		if ( distance < raycaster.near || distance > raycaster.far ) return;

    		intersects.push( {

    			distance: distance,
    			distanceToRay: Math.sqrt( rayPointDistanceSq ),
    			point: intersectPoint,
    			index: index,
    			face: null,
    			object: object

    		} );

    	}

    }

    class VideoTexture extends Texture {

    	constructor( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {

    		super( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

    		this.isVideoTexture = true;

    		this.minFilter = minFilter !== undefined ? minFilter : LinearFilter;
    		this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;

    		this.generateMipmaps = false;

    		const scope = this;

    		function updateVideo() {

    			scope.needsUpdate = true;
    			video.requestVideoFrameCallback( updateVideo );

    		}

    		if ( 'requestVideoFrameCallback' in video ) {

    			video.requestVideoFrameCallback( updateVideo );

    		}

    	}

    	clone() {

    		return new this.constructor( this.image ).copy( this );

    	}

    	update() {

    		const video = this.image;
    		const hasVideoFrameCallback = 'requestVideoFrameCallback' in video;

    		if ( hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA ) {

    			this.needsUpdate = true;

    		}

    	}

    }

    class FramebufferTexture extends Texture {

    	constructor( width, height, format ) {

    		super( { width, height } );

    		this.isFramebufferTexture = true;

    		this.format = format;

    		this.magFilter = NearestFilter;
    		this.minFilter = NearestFilter;

    		this.generateMipmaps = false;

    		this.needsUpdate = true;

    	}

    }

    class CompressedTexture extends Texture {

    	constructor( mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {

    		super( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );

    		this.isCompressedTexture = true;

    		this.image = { width: width, height: height };
    		this.mipmaps = mipmaps;

    		// no flipping for cube textures
    		// (also flipping doesn't work for compressed textures )

    		this.flipY = false;

    		// can't generate mipmaps for compressed textures
    		// mips must be embedded in DDS files

    		this.generateMipmaps = false;

    	}

    }

    class CanvasTexture extends Texture {

    	constructor( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {

    		super( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

    		this.isCanvasTexture = true;

    		this.needsUpdate = true;

    	}

    }

    /**
     * Extensible curve object.
     *
     * Some common of curve methods:
     * .getPoint( t, optionalTarget ), .getTangent( t, optionalTarget )
     * .getPointAt( u, optionalTarget ), .getTangentAt( u, optionalTarget )
     * .getPoints(), .getSpacedPoints()
     * .getLength()
     * .updateArcLengths()
     *
     * This following curves inherit from THREE.Curve:
     *
     * -- 2D curves --
     * THREE.ArcCurve
     * THREE.CubicBezierCurve
     * THREE.EllipseCurve
     * THREE.LineCurve
     * THREE.QuadraticBezierCurve
     * THREE.SplineCurve
     *
     * -- 3D curves --
     * THREE.CatmullRomCurve3
     * THREE.CubicBezierCurve3
     * THREE.LineCurve3
     * THREE.QuadraticBezierCurve3
     *
     * A series of curves can be represented as a THREE.CurvePath.
     *
     **/

    class Curve {

    	constructor() {

    		this.type = 'Curve';

    		this.arcLengthDivisions = 200;

    	}

    	// Virtual base class method to overwrite and implement in subclasses
    	//	- t [0 .. 1]

    	getPoint( /* t, optionalTarget */ ) {

    		console.warn( 'THREE.Curve: .getPoint() not implemented.' );
    		return null;

    	}

    	// Get point at relative position in curve according to arc length
    	// - u [0 .. 1]

    	getPointAt( u, optionalTarget ) {

    		const t = this.getUtoTmapping( u );
    		return this.getPoint( t, optionalTarget );

    	}

    	// Get sequence of points using getPoint( t )

    	getPoints( divisions = 5 ) {

    		const points = [];

    		for ( let d = 0; d <= divisions; d ++ ) {

    			points.push( this.getPoint( d / divisions ) );

    		}

    		return points;

    	}

    	// Get sequence of points using getPointAt( u )

    	getSpacedPoints( divisions = 5 ) {

    		const points = [];

    		for ( let d = 0; d <= divisions; d ++ ) {

    			points.push( this.getPointAt( d / divisions ) );

    		}

    		return points;

    	}

    	// Get total curve arc length

    	getLength() {

    		const lengths = this.getLengths();
    		return lengths[ lengths.length - 1 ];

    	}

    	// Get list of cumulative segment lengths

    	getLengths( divisions = this.arcLengthDivisions ) {

    		if ( this.cacheArcLengths &&
    			( this.cacheArcLengths.length === divisions + 1 ) &&
    			! this.needsUpdate ) {

    			return this.cacheArcLengths;

    		}

    		this.needsUpdate = false;

    		const cache = [];
    		let current, last = this.getPoint( 0 );
    		let sum = 0;

    		cache.push( 0 );

    		for ( let p = 1; p <= divisions; p ++ ) {

    			current = this.getPoint( p / divisions );
    			sum += current.distanceTo( last );
    			cache.push( sum );
    			last = current;

    		}

    		this.cacheArcLengths = cache;

    		return cache; // { sums: cache, sum: sum }; Sum is in the last element.

    	}

    	updateArcLengths() {

    		this.needsUpdate = true;
    		this.getLengths();

    	}

    	// Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant

    	getUtoTmapping( u, distance ) {

    		const arcLengths = this.getLengths();

    		let i = 0;
    		const il = arcLengths.length;

    		let targetArcLength; // The targeted u distance value to get

    		if ( distance ) {

    			targetArcLength = distance;

    		} else {

    			targetArcLength = u * arcLengths[ il - 1 ];

    		}

    		// binary search for the index with largest value smaller than target u distance

    		let low = 0, high = il - 1, comparison;

    		while ( low <= high ) {

    			i = Math.floor( low + ( high - low ) / 2 ); // less likely to overflow, though probably not issue here, JS doesn't really have integers, all numbers are floats

    			comparison = arcLengths[ i ] - targetArcLength;

    			if ( comparison < 0 ) {

    				low = i + 1;

    			} else if ( comparison > 0 ) {

    				high = i - 1;

    			} else {

    				high = i;
    				break;

    				// DONE

    			}

    		}

    		i = high;

    		if ( arcLengths[ i ] === targetArcLength ) {

    			return i / ( il - 1 );

    		}

    		// we could get finer grain at lengths, or use simple interpolation between two points

    		const lengthBefore = arcLengths[ i ];
    		const lengthAfter = arcLengths[ i + 1 ];

    		const segmentLength = lengthAfter - lengthBefore;

    		// determine where we are between the 'before' and 'after' points

    		const segmentFraction = ( targetArcLength - lengthBefore ) / segmentLength;

    		// add that fractional amount to t

    		const t = ( i + segmentFraction ) / ( il - 1 );

    		return t;

    	}

    	// Returns a unit vector tangent at t
    	// In case any sub curve does not implement its tangent derivation,
    	// 2 points a small delta apart will be used to find its gradient
    	// which seems to give a reasonable approximation

    	getTangent( t, optionalTarget ) {

    		const delta = 0.0001;
    		let t1 = t - delta;
    		let t2 = t + delta;

    		// Capping in case of danger

    		if ( t1 < 0 ) t1 = 0;
    		if ( t2 > 1 ) t2 = 1;

    		const pt1 = this.getPoint( t1 );
    		const pt2 = this.getPoint( t2 );

    		const tangent = optionalTarget || ( ( pt1.isVector2 ) ? new Vector2() : new Vector3() );

    		tangent.copy( pt2 ).sub( pt1 ).normalize();

    		return tangent;

    	}

    	getTangentAt( u, optionalTarget ) {

    		const t = this.getUtoTmapping( u );
    		return this.getTangent( t, optionalTarget );

    	}

    	computeFrenetFrames( segments, closed ) {

    		// see http://www.cs.indiana.edu/pub/techreports/TR425.pdf

    		const normal = new Vector3();

    		const tangents = [];
    		const normals = [];
    		const binormals = [];

    		const vec = new Vector3();
    		const mat = new Matrix4();

    		// compute the tangent vectors for each segment on the curve

    		for ( let i = 0; i <= segments; i ++ ) {

    			const u = i / segments;

    			tangents[ i ] = this.getTangentAt( u, new Vector3() );

    		}

    		// select an initial normal vector perpendicular to the first tangent vector,
    		// and in the direction of the minimum tangent xyz component

    		normals[ 0 ] = new Vector3();
    		binormals[ 0 ] = new Vector3();
    		let min = Number.MAX_VALUE;
    		const tx = Math.abs( tangents[ 0 ].x );
    		const ty = Math.abs( tangents[ 0 ].y );
    		const tz = Math.abs( tangents[ 0 ].z );

    		if ( tx <= min ) {

    			min = tx;
    			normal.set( 1, 0, 0 );

    		}

    		if ( ty <= min ) {

    			min = ty;
    			normal.set( 0, 1, 0 );

    		}

    		if ( tz <= min ) {

    			normal.set( 0, 0, 1 );

    		}

    		vec.crossVectors( tangents[ 0 ], normal ).normalize();

    		normals[ 0 ].crossVectors( tangents[ 0 ], vec );
    		binormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] );


    		// compute the slowly-varying normal and binormal vectors for each segment on the curve

    		for ( let i = 1; i <= segments; i ++ ) {

    			normals[ i ] = normals[ i - 1 ].clone();

    			binormals[ i ] = binormals[ i - 1 ].clone();

    			vec.crossVectors( tangents[ i - 1 ], tangents[ i ] );

    			if ( vec.length() > Number.EPSILON ) {

    				vec.normalize();

    				const theta = Math.acos( clamp( tangents[ i - 1 ].dot( tangents[ i ] ), - 1, 1 ) ); // clamp for floating pt errors

    				normals[ i ].applyMatrix4( mat.makeRotationAxis( vec, theta ) );

    			}

    			binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );

    		}

    		// if the curve is closed, postprocess the vectors so the first and last normal vectors are the same

    		if ( closed === true ) {

    			let theta = Math.acos( clamp( normals[ 0 ].dot( normals[ segments ] ), - 1, 1 ) );
    			theta /= segments;

    			if ( tangents[ 0 ].dot( vec.crossVectors( normals[ 0 ], normals[ segments ] ) ) > 0 ) {

    				theta = - theta;

    			}

    			for ( let i = 1; i <= segments; i ++ ) {

    				// twist a little...
    				normals[ i ].applyMatrix4( mat.makeRotationAxis( tangents[ i ], theta * i ) );
    				binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );

    			}

    		}

    		return {
    			tangents: tangents,
    			normals: normals,
    			binormals: binormals
    		};

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    	copy( source ) {

    		this.arcLengthDivisions = source.arcLengthDivisions;

    		return this;

    	}

    	toJSON() {

    		const data = {
    			metadata: {
    				version: 4.5,
    				type: 'Curve',
    				generator: 'Curve.toJSON'
    			}
    		};

    		data.arcLengthDivisions = this.arcLengthDivisions;
    		data.type = this.type;

    		return data;

    	}

    	fromJSON( json ) {

    		this.arcLengthDivisions = json.arcLengthDivisions;

    		return this;

    	}

    }

    class EllipseCurve extends Curve {

    	constructor( aX = 0, aY = 0, xRadius = 1, yRadius = 1, aStartAngle = 0, aEndAngle = Math.PI * 2, aClockwise = false, aRotation = 0 ) {

    		super();

    		this.isEllipseCurve = true;

    		this.type = 'EllipseCurve';

    		this.aX = aX;
    		this.aY = aY;

    		this.xRadius = xRadius;
    		this.yRadius = yRadius;

    		this.aStartAngle = aStartAngle;
    		this.aEndAngle = aEndAngle;

    		this.aClockwise = aClockwise;

    		this.aRotation = aRotation;

    	}

    	getPoint( t, optionalTarget ) {

    		const point = optionalTarget || new Vector2();

    		const twoPi = Math.PI * 2;
    		let deltaAngle = this.aEndAngle - this.aStartAngle;
    		const samePoints = Math.abs( deltaAngle ) < Number.EPSILON;

    		// ensures that deltaAngle is 0 .. 2 PI
    		while ( deltaAngle < 0 ) deltaAngle += twoPi;
    		while ( deltaAngle > twoPi ) deltaAngle -= twoPi;

    		if ( deltaAngle < Number.EPSILON ) {

    			if ( samePoints ) {

    				deltaAngle = 0;

    			} else {

    				deltaAngle = twoPi;

    			}

    		}

    		if ( this.aClockwise === true && ! samePoints ) {

    			if ( deltaAngle === twoPi ) {

    				deltaAngle = - twoPi;

    			} else {

    				deltaAngle = deltaAngle - twoPi;

    			}

    		}

    		const angle = this.aStartAngle + t * deltaAngle;
    		let x = this.aX + this.xRadius * Math.cos( angle );
    		let y = this.aY + this.yRadius * Math.sin( angle );

    		if ( this.aRotation !== 0 ) {

    			const cos = Math.cos( this.aRotation );
    			const sin = Math.sin( this.aRotation );

    			const tx = x - this.aX;
    			const ty = y - this.aY;

    			// Rotate the point about the center of the ellipse.
    			x = tx * cos - ty * sin + this.aX;
    			y = tx * sin + ty * cos + this.aY;

    		}

    		return point.set( x, y );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.aX = source.aX;
    		this.aY = source.aY;

    		this.xRadius = source.xRadius;
    		this.yRadius = source.yRadius;

    		this.aStartAngle = source.aStartAngle;
    		this.aEndAngle = source.aEndAngle;

    		this.aClockwise = source.aClockwise;

    		this.aRotation = source.aRotation;

    		return this;

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.aX = this.aX;
    		data.aY = this.aY;

    		data.xRadius = this.xRadius;
    		data.yRadius = this.yRadius;

    		data.aStartAngle = this.aStartAngle;
    		data.aEndAngle = this.aEndAngle;

    		data.aClockwise = this.aClockwise;

    		data.aRotation = this.aRotation;

    		return data;

    	}

    	fromJSON( json ) {

    		super.fromJSON( json );

    		this.aX = json.aX;
    		this.aY = json.aY;

    		this.xRadius = json.xRadius;
    		this.yRadius = json.yRadius;

    		this.aStartAngle = json.aStartAngle;
    		this.aEndAngle = json.aEndAngle;

    		this.aClockwise = json.aClockwise;

    		this.aRotation = json.aRotation;

    		return this;

    	}

    }

    class ArcCurve extends EllipseCurve {

    	constructor( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {

    		super( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );

    		this.isArcCurve = true;

    		this.type = 'ArcCurve';

    	}

    }

    /**
     * Centripetal CatmullRom Curve - which is useful for avoiding
     * cusps and self-intersections in non-uniform catmull rom curves.
     * http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf
     *
     * curve.type accepts centripetal(default), chordal and catmullrom
     * curve.tension is used for catmullrom which defaults to 0.5
     */


    /*
    Based on an optimized c++ solution in
     - http://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/
     - http://ideone.com/NoEbVM

    This CubicPoly class could be used for reusing some variables and calculations,
    but for three.js curve use, it could be possible inlined and flatten into a single function call
    which can be placed in CurveUtils.
    */

    function CubicPoly() {

    	let c0 = 0, c1 = 0, c2 = 0, c3 = 0;

    	/*
    	 * Compute coefficients for a cubic polynomial
    	 *   p(s) = c0 + c1*s + c2*s^2 + c3*s^3
    	 * such that
    	 *   p(0) = x0, p(1) = x1
    	 *  and
    	 *   p'(0) = t0, p'(1) = t1.
    	 */
    	function init( x0, x1, t0, t1 ) {

    		c0 = x0;
    		c1 = t0;
    		c2 = - 3 * x0 + 3 * x1 - 2 * t0 - t1;
    		c3 = 2 * x0 - 2 * x1 + t0 + t1;

    	}

    	return {

    		initCatmullRom: function ( x0, x1, x2, x3, tension ) {

    			init( x1, x2, tension * ( x2 - x0 ), tension * ( x3 - x1 ) );

    		},

    		initNonuniformCatmullRom: function ( x0, x1, x2, x3, dt0, dt1, dt2 ) {

    			// compute tangents when parameterized in [t1,t2]
    			let t1 = ( x1 - x0 ) / dt0 - ( x2 - x0 ) / ( dt0 + dt1 ) + ( x2 - x1 ) / dt1;
    			let t2 = ( x2 - x1 ) / dt1 - ( x3 - x1 ) / ( dt1 + dt2 ) + ( x3 - x2 ) / dt2;

    			// rescale tangents for parametrization in [0,1]
    			t1 *= dt1;
    			t2 *= dt1;

    			init( x1, x2, t1, t2 );

    		},

    		calc: function ( t ) {

    			const t2 = t * t;
    			const t3 = t2 * t;
    			return c0 + c1 * t + c2 * t2 + c3 * t3;

    		}

    	};

    }

    //

    const tmp = /*@__PURE__*/ new Vector3();
    const px = /*@__PURE__*/ new CubicPoly();
    const py = /*@__PURE__*/ new CubicPoly();
    const pz = /*@__PURE__*/ new CubicPoly();

    class CatmullRomCurve3 extends Curve {

    	constructor( points = [], closed = false, curveType = 'centripetal', tension = 0.5 ) {

    		super();

    		this.isCatmullRomCurve3 = true;

    		this.type = 'CatmullRomCurve3';

    		this.points = points;
    		this.closed = closed;
    		this.curveType = curveType;
    		this.tension = tension;

    	}

    	getPoint( t, optionalTarget = new Vector3() ) {

    		const point = optionalTarget;

    		const points = this.points;
    		const l = points.length;

    		const p = ( l - ( this.closed ? 0 : 1 ) ) * t;
    		let intPoint = Math.floor( p );
    		let weight = p - intPoint;

    		if ( this.closed ) {

    			intPoint += intPoint > 0 ? 0 : ( Math.floor( Math.abs( intPoint ) / l ) + 1 ) * l;

    		} else if ( weight === 0 && intPoint === l - 1 ) {

    			intPoint = l - 2;
    			weight = 1;

    		}

    		let p0, p3; // 4 points (p1 & p2 defined below)

    		if ( this.closed || intPoint > 0 ) {

    			p0 = points[ ( intPoint - 1 ) % l ];

    		} else {

    			// extrapolate first point
    			tmp.subVectors( points[ 0 ], points[ 1 ] ).add( points[ 0 ] );
    			p0 = tmp;

    		}

    		const p1 = points[ intPoint % l ];
    		const p2 = points[ ( intPoint + 1 ) % l ];

    		if ( this.closed || intPoint + 2 < l ) {

    			p3 = points[ ( intPoint + 2 ) % l ];

    		} else {

    			// extrapolate last point
    			tmp.subVectors( points[ l - 1 ], points[ l - 2 ] ).add( points[ l - 1 ] );
    			p3 = tmp;

    		}

    		if ( this.curveType === 'centripetal' || this.curveType === 'chordal' ) {

    			// init Centripetal / Chordal Catmull-Rom
    			const pow = this.curveType === 'chordal' ? 0.5 : 0.25;
    			let dt0 = Math.pow( p0.distanceToSquared( p1 ), pow );
    			let dt1 = Math.pow( p1.distanceToSquared( p2 ), pow );
    			let dt2 = Math.pow( p2.distanceToSquared( p3 ), pow );

    			// safety check for repeated points
    			if ( dt1 < 1e-4 ) dt1 = 1.0;
    			if ( dt0 < 1e-4 ) dt0 = dt1;
    			if ( dt2 < 1e-4 ) dt2 = dt1;

    			px.initNonuniformCatmullRom( p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2 );
    			py.initNonuniformCatmullRom( p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2 );
    			pz.initNonuniformCatmullRom( p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2 );

    		} else if ( this.curveType === 'catmullrom' ) {

    			px.initCatmullRom( p0.x, p1.x, p2.x, p3.x, this.tension );
    			py.initCatmullRom( p0.y, p1.y, p2.y, p3.y, this.tension );
    			pz.initCatmullRom( p0.z, p1.z, p2.z, p3.z, this.tension );

    		}

    		point.set(
    			px.calc( weight ),
    			py.calc( weight ),
    			pz.calc( weight )
    		);

    		return point;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.points = [];

    		for ( let i = 0, l = source.points.length; i < l; i ++ ) {

    			const point = source.points[ i ];

    			this.points.push( point.clone() );

    		}

    		this.closed = source.closed;
    		this.curveType = source.curveType;
    		this.tension = source.tension;

    		return this;

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.points = [];

    		for ( let i = 0, l = this.points.length; i < l; i ++ ) {

    			const point = this.points[ i ];
    			data.points.push( point.toArray() );

    		}

    		data.closed = this.closed;
    		data.curveType = this.curveType;
    		data.tension = this.tension;

    		return data;

    	}

    	fromJSON( json ) {

    		super.fromJSON( json );

    		this.points = [];

    		for ( let i = 0, l = json.points.length; i < l; i ++ ) {

    			const point = json.points[ i ];
    			this.points.push( new Vector3().fromArray( point ) );

    		}

    		this.closed = json.closed;
    		this.curveType = json.curveType;
    		this.tension = json.tension;

    		return this;

    	}

    }

    /**
     * Bezier Curves formulas obtained from
     * https://en.wikipedia.org/wiki/B%C3%A9zier_curve
     */

    function CatmullRom( t, p0, p1, p2, p3 ) {

    	const v0 = ( p2 - p0 ) * 0.5;
    	const v1 = ( p3 - p1 ) * 0.5;
    	const t2 = t * t;
    	const t3 = t * t2;
    	return ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;

    }

    //

    function QuadraticBezierP0( t, p ) {

    	const k = 1 - t;
    	return k * k * p;

    }

    function QuadraticBezierP1( t, p ) {

    	return 2 * ( 1 - t ) * t * p;

    }

    function QuadraticBezierP2( t, p ) {

    	return t * t * p;

    }

    function QuadraticBezier( t, p0, p1, p2 ) {

    	return QuadraticBezierP0( t, p0 ) + QuadraticBezierP1( t, p1 ) +
    		QuadraticBezierP2( t, p2 );

    }

    //

    function CubicBezierP0( t, p ) {

    	const k = 1 - t;
    	return k * k * k * p;

    }

    function CubicBezierP1( t, p ) {

    	const k = 1 - t;
    	return 3 * k * k * t * p;

    }

    function CubicBezierP2( t, p ) {

    	return 3 * ( 1 - t ) * t * t * p;

    }

    function CubicBezierP3( t, p ) {

    	return t * t * t * p;

    }

    function CubicBezier( t, p0, p1, p2, p3 ) {

    	return CubicBezierP0( t, p0 ) + CubicBezierP1( t, p1 ) + CubicBezierP2( t, p2 ) +
    		CubicBezierP3( t, p3 );

    }

    class CubicBezierCurve extends Curve {

    	constructor( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2(), v3 = new Vector2() ) {

    		super();

    		this.isCubicBezierCurve = true;

    		this.type = 'CubicBezierCurve';

    		this.v0 = v0;
    		this.v1 = v1;
    		this.v2 = v2;
    		this.v3 = v3;

    	}

    	getPoint( t, optionalTarget = new Vector2() ) {

    		const point = optionalTarget;

    		const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;

    		point.set(
    			CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
    			CubicBezier( t, v0.y, v1.y, v2.y, v3.y )
    		);

    		return point;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.v0.copy( source.v0 );
    		this.v1.copy( source.v1 );
    		this.v2.copy( source.v2 );
    		this.v3.copy( source.v3 );

    		return this;

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.v0 = this.v0.toArray();
    		data.v1 = this.v1.toArray();
    		data.v2 = this.v2.toArray();
    		data.v3 = this.v3.toArray();

    		return data;

    	}

    	fromJSON( json ) {

    		super.fromJSON( json );

    		this.v0.fromArray( json.v0 );
    		this.v1.fromArray( json.v1 );
    		this.v2.fromArray( json.v2 );
    		this.v3.fromArray( json.v3 );

    		return this;

    	}

    }

    class CubicBezierCurve3 extends Curve {

    	constructor( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3(), v3 = new Vector3() ) {

    		super();

    		this.isCubicBezierCurve3 = true;

    		this.type = 'CubicBezierCurve3';

    		this.v0 = v0;
    		this.v1 = v1;
    		this.v2 = v2;
    		this.v3 = v3;

    	}

    	getPoint( t, optionalTarget = new Vector3() ) {

    		const point = optionalTarget;

    		const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;

    		point.set(
    			CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
    			CubicBezier( t, v0.y, v1.y, v2.y, v3.y ),
    			CubicBezier( t, v0.z, v1.z, v2.z, v3.z )
    		);

    		return point;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.v0.copy( source.v0 );
    		this.v1.copy( source.v1 );
    		this.v2.copy( source.v2 );
    		this.v3.copy( source.v3 );

    		return this;

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.v0 = this.v0.toArray();
    		data.v1 = this.v1.toArray();
    		data.v2 = this.v2.toArray();
    		data.v3 = this.v3.toArray();

    		return data;

    	}

    	fromJSON( json ) {

    		super.fromJSON( json );

    		this.v0.fromArray( json.v0 );
    		this.v1.fromArray( json.v1 );
    		this.v2.fromArray( json.v2 );
    		this.v3.fromArray( json.v3 );

    		return this;

    	}

    }

    class LineCurve extends Curve {

    	constructor( v1 = new Vector2(), v2 = new Vector2() ) {

    		super();

    		this.isLineCurve = true;

    		this.type = 'LineCurve';

    		this.v1 = v1;
    		this.v2 = v2;

    	}

    	getPoint( t, optionalTarget = new Vector2() ) {

    		const point = optionalTarget;

    		if ( t === 1 ) {

    			point.copy( this.v2 );

    		} else {

    			point.copy( this.v2 ).sub( this.v1 );
    			point.multiplyScalar( t ).add( this.v1 );

    		}

    		return point;

    	}

    	// Line curve is linear, so we can overwrite default getPointAt
    	getPointAt( u, optionalTarget ) {

    		return this.getPoint( u, optionalTarget );

    	}

    	getTangent( t, optionalTarget ) {

    		const tangent = optionalTarget || new Vector2();

    		tangent.copy( this.v2 ).sub( this.v1 ).normalize();

    		return tangent;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.v1.copy( source.v1 );
    		this.v2.copy( source.v2 );

    		return this;

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.v1 = this.v1.toArray();
    		data.v2 = this.v2.toArray();

    		return data;

    	}

    	fromJSON( json ) {

    		super.fromJSON( json );

    		this.v1.fromArray( json.v1 );
    		this.v2.fromArray( json.v2 );

    		return this;

    	}

    }

    class LineCurve3 extends Curve {

    	constructor( v1 = new Vector3(), v2 = new Vector3() ) {

    		super();

    		this.isLineCurve3 = true;

    		this.type = 'LineCurve3';

    		this.v1 = v1;
    		this.v2 = v2;

    	}
    	getPoint( t, optionalTarget = new Vector3() ) {

    		const point = optionalTarget;

    		if ( t === 1 ) {

    			point.copy( this.v2 );

    		} else {

    			point.copy( this.v2 ).sub( this.v1 );
    			point.multiplyScalar( t ).add( this.v1 );

    		}

    		return point;

    	}
    	// Line curve is linear, so we can overwrite default getPointAt
    	getPointAt( u, optionalTarget ) {

    		return this.getPoint( u, optionalTarget );

    	}
    	copy( source ) {

    		super.copy( source );

    		this.v1.copy( source.v1 );
    		this.v2.copy( source.v2 );

    		return this;

    	}
    	toJSON() {

    		const data = super.toJSON();

    		data.v1 = this.v1.toArray();
    		data.v2 = this.v2.toArray();

    		return data;

    	}
    	fromJSON( json ) {

    		super.fromJSON( json );

    		this.v1.fromArray( json.v1 );
    		this.v2.fromArray( json.v2 );

    		return this;

    	}

    }

    class QuadraticBezierCurve extends Curve {

    	constructor( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2() ) {

    		super();

    		this.isQuadraticBezierCurve = true;

    		this.type = 'QuadraticBezierCurve';

    		this.v0 = v0;
    		this.v1 = v1;
    		this.v2 = v2;

    	}

    	getPoint( t, optionalTarget = new Vector2() ) {

    		const point = optionalTarget;

    		const v0 = this.v0, v1 = this.v1, v2 = this.v2;

    		point.set(
    			QuadraticBezier( t, v0.x, v1.x, v2.x ),
    			QuadraticBezier( t, v0.y, v1.y, v2.y )
    		);

    		return point;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.v0.copy( source.v0 );
    		this.v1.copy( source.v1 );
    		this.v2.copy( source.v2 );

    		return this;

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.v0 = this.v0.toArray();
    		data.v1 = this.v1.toArray();
    		data.v2 = this.v2.toArray();

    		return data;

    	}

    	fromJSON( json ) {

    		super.fromJSON( json );

    		this.v0.fromArray( json.v0 );
    		this.v1.fromArray( json.v1 );
    		this.v2.fromArray( json.v2 );

    		return this;

    	}

    }

    class QuadraticBezierCurve3 extends Curve {

    	constructor( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3() ) {

    		super();

    		this.isQuadraticBezierCurve3 = true;

    		this.type = 'QuadraticBezierCurve3';

    		this.v0 = v0;
    		this.v1 = v1;
    		this.v2 = v2;

    	}

    	getPoint( t, optionalTarget = new Vector3() ) {

    		const point = optionalTarget;

    		const v0 = this.v0, v1 = this.v1, v2 = this.v2;

    		point.set(
    			QuadraticBezier( t, v0.x, v1.x, v2.x ),
    			QuadraticBezier( t, v0.y, v1.y, v2.y ),
    			QuadraticBezier( t, v0.z, v1.z, v2.z )
    		);

    		return point;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.v0.copy( source.v0 );
    		this.v1.copy( source.v1 );
    		this.v2.copy( source.v2 );

    		return this;

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.v0 = this.v0.toArray();
    		data.v1 = this.v1.toArray();
    		data.v2 = this.v2.toArray();

    		return data;

    	}

    	fromJSON( json ) {

    		super.fromJSON( json );

    		this.v0.fromArray( json.v0 );
    		this.v1.fromArray( json.v1 );
    		this.v2.fromArray( json.v2 );

    		return this;

    	}

    }

    class SplineCurve extends Curve {

    	constructor( points = [] ) {

    		super();

    		this.isSplineCurve = true;

    		this.type = 'SplineCurve';

    		this.points = points;

    	}

    	getPoint( t, optionalTarget = new Vector2() ) {

    		const point = optionalTarget;

    		const points = this.points;
    		const p = ( points.length - 1 ) * t;

    		const intPoint = Math.floor( p );
    		const weight = p - intPoint;

    		const p0 = points[ intPoint === 0 ? intPoint : intPoint - 1 ];
    		const p1 = points[ intPoint ];
    		const p2 = points[ intPoint > points.length - 2 ? points.length - 1 : intPoint + 1 ];
    		const p3 = points[ intPoint > points.length - 3 ? points.length - 1 : intPoint + 2 ];

    		point.set(
    			CatmullRom( weight, p0.x, p1.x, p2.x, p3.x ),
    			CatmullRom( weight, p0.y, p1.y, p2.y, p3.y )
    		);

    		return point;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.points = [];

    		for ( let i = 0, l = source.points.length; i < l; i ++ ) {

    			const point = source.points[ i ];

    			this.points.push( point.clone() );

    		}

    		return this;

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.points = [];

    		for ( let i = 0, l = this.points.length; i < l; i ++ ) {

    			const point = this.points[ i ];
    			data.points.push( point.toArray() );

    		}

    		return data;

    	}

    	fromJSON( json ) {

    		super.fromJSON( json );

    		this.points = [];

    		for ( let i = 0, l = json.points.length; i < l; i ++ ) {

    			const point = json.points[ i ];
    			this.points.push( new Vector2().fromArray( point ) );

    		}

    		return this;

    	}

    }

    var Curves = /*#__PURE__*/Object.freeze({
    	__proto__: null,
    	ArcCurve: ArcCurve,
    	CatmullRomCurve3: CatmullRomCurve3,
    	CubicBezierCurve: CubicBezierCurve,
    	CubicBezierCurve3: CubicBezierCurve3,
    	EllipseCurve: EllipseCurve,
    	LineCurve: LineCurve,
    	LineCurve3: LineCurve3,
    	QuadraticBezierCurve: QuadraticBezierCurve,
    	QuadraticBezierCurve3: QuadraticBezierCurve3,
    	SplineCurve: SplineCurve
    });

    /**************************************************************
     *	Curved Path - a curve path is simply a array of connected
     *  curves, but retains the api of a curve
     **************************************************************/

    class CurvePath extends Curve {

    	constructor() {

    		super();

    		this.type = 'CurvePath';

    		this.curves = [];
    		this.autoClose = false; // Automatically closes the path

    	}

    	add( curve ) {

    		this.curves.push( curve );

    	}

    	closePath() {

    		// Add a line curve if start and end of lines are not connected
    		const startPoint = this.curves[ 0 ].getPoint( 0 );
    		const endPoint = this.curves[ this.curves.length - 1 ].getPoint( 1 );

    		if ( ! startPoint.equals( endPoint ) ) {

    			this.curves.push( new LineCurve( endPoint, startPoint ) );

    		}

    	}

    	// To get accurate point with reference to
    	// entire path distance at time t,
    	// following has to be done:

    	// 1. Length of each sub path have to be known
    	// 2. Locate and identify type of curve
    	// 3. Get t for the curve
    	// 4. Return curve.getPointAt(t')

    	getPoint( t, optionalTarget ) {

    		const d = t * this.getLength();
    		const curveLengths = this.getCurveLengths();
    		let i = 0;

    		// To think about boundaries points.

    		while ( i < curveLengths.length ) {

    			if ( curveLengths[ i ] >= d ) {

    				const diff = curveLengths[ i ] - d;
    				const curve = this.curves[ i ];

    				const segmentLength = curve.getLength();
    				const u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;

    				return curve.getPointAt( u, optionalTarget );

    			}

    			i ++;

    		}

    		return null;

    		// loop where sum != 0, sum > d , sum+1 <d

    	}

    	// We cannot use the default THREE.Curve getPoint() with getLength() because in
    	// THREE.Curve, getLength() depends on getPoint() but in THREE.CurvePath
    	// getPoint() depends on getLength

    	getLength() {

    		const lens = this.getCurveLengths();
    		return lens[ lens.length - 1 ];

    	}

    	// cacheLengths must be recalculated.
    	updateArcLengths() {

    		this.needsUpdate = true;
    		this.cacheLengths = null;
    		this.getCurveLengths();

    	}

    	// Compute lengths and cache them
    	// We cannot overwrite getLengths() because UtoT mapping uses it.

    	getCurveLengths() {

    		// We use cache values if curves and cache array are same length

    		if ( this.cacheLengths && this.cacheLengths.length === this.curves.length ) {

    			return this.cacheLengths;

    		}

    		// Get length of sub-curve
    		// Push sums into cached array

    		const lengths = [];
    		let sums = 0;

    		for ( let i = 0, l = this.curves.length; i < l; i ++ ) {

    			sums += this.curves[ i ].getLength();
    			lengths.push( sums );

    		}

    		this.cacheLengths = lengths;

    		return lengths;

    	}

    	getSpacedPoints( divisions = 40 ) {

    		const points = [];

    		for ( let i = 0; i <= divisions; i ++ ) {

    			points.push( this.getPoint( i / divisions ) );

    		}

    		if ( this.autoClose ) {

    			points.push( points[ 0 ] );

    		}

    		return points;

    	}

    	getPoints( divisions = 12 ) {

    		const points = [];
    		let last;

    		for ( let i = 0, curves = this.curves; i < curves.length; i ++ ) {

    			const curve = curves[ i ];
    			const resolution = curve.isEllipseCurve ? divisions * 2
    				: ( curve.isLineCurve || curve.isLineCurve3 ) ? 1
    					: curve.isSplineCurve ? divisions * curve.points.length
    						: divisions;

    			const pts = curve.getPoints( resolution );

    			for ( let j = 0; j < pts.length; j ++ ) {

    				const point = pts[ j ];

    				if ( last && last.equals( point ) ) continue; // ensures no consecutive points are duplicates

    				points.push( point );
    				last = point;

    			}

    		}

    		if ( this.autoClose && points.length > 1 && ! points[ points.length - 1 ].equals( points[ 0 ] ) ) {

    			points.push( points[ 0 ] );

    		}

    		return points;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.curves = [];

    		for ( let i = 0, l = source.curves.length; i < l; i ++ ) {

    			const curve = source.curves[ i ];

    			this.curves.push( curve.clone() );

    		}

    		this.autoClose = source.autoClose;

    		return this;

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.autoClose = this.autoClose;
    		data.curves = [];

    		for ( let i = 0, l = this.curves.length; i < l; i ++ ) {

    			const curve = this.curves[ i ];
    			data.curves.push( curve.toJSON() );

    		}

    		return data;

    	}

    	fromJSON( json ) {

    		super.fromJSON( json );

    		this.autoClose = json.autoClose;
    		this.curves = [];

    		for ( let i = 0, l = json.curves.length; i < l; i ++ ) {

    			const curve = json.curves[ i ];
    			this.curves.push( new Curves[ curve.type ]().fromJSON( curve ) );

    		}

    		return this;

    	}

    }

    class Path extends CurvePath {

    	constructor( points ) {

    		super();

    		this.type = 'Path';

    		this.currentPoint = new Vector2();

    		if ( points ) {

    			this.setFromPoints( points );

    		}

    	}

    	setFromPoints( points ) {

    		this.moveTo( points[ 0 ].x, points[ 0 ].y );

    		for ( let i = 1, l = points.length; i < l; i ++ ) {

    			this.lineTo( points[ i ].x, points[ i ].y );

    		}

    		return this;

    	}

    	moveTo( x, y ) {

    		this.currentPoint.set( x, y ); // TODO consider referencing vectors instead of copying?

    		return this;

    	}

    	lineTo( x, y ) {

    		const curve = new LineCurve( this.currentPoint.clone(), new Vector2( x, y ) );
    		this.curves.push( curve );

    		this.currentPoint.set( x, y );

    		return this;

    	}

    	quadraticCurveTo( aCPx, aCPy, aX, aY ) {

    		const curve = new QuadraticBezierCurve(
    			this.currentPoint.clone(),
    			new Vector2( aCPx, aCPy ),
    			new Vector2( aX, aY )
    		);

    		this.curves.push( curve );

    		this.currentPoint.set( aX, aY );

    		return this;

    	}

    	bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {

    		const curve = new CubicBezierCurve(
    			this.currentPoint.clone(),
    			new Vector2( aCP1x, aCP1y ),
    			new Vector2( aCP2x, aCP2y ),
    			new Vector2( aX, aY )
    		);

    		this.curves.push( curve );

    		this.currentPoint.set( aX, aY );

    		return this;

    	}

    	splineThru( pts /*Array of Vector*/ ) {

    		const npts = [ this.currentPoint.clone() ].concat( pts );

    		const curve = new SplineCurve( npts );
    		this.curves.push( curve );

    		this.currentPoint.copy( pts[ pts.length - 1 ] );

    		return this;

    	}

    	arc( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {

    		const x0 = this.currentPoint.x;
    		const y0 = this.currentPoint.y;

    		this.absarc( aX + x0, aY + y0, aRadius,
    			aStartAngle, aEndAngle, aClockwise );

    		return this;

    	}

    	absarc( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {

    		this.absellipse( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );

    		return this;

    	}

    	ellipse( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {

    		const x0 = this.currentPoint.x;
    		const y0 = this.currentPoint.y;

    		this.absellipse( aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );

    		return this;

    	}

    	absellipse( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {

    		const curve = new EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );

    		if ( this.curves.length > 0 ) {

    			// if a previous curve is present, attempt to join
    			const firstPoint = curve.getPoint( 0 );

    			if ( ! firstPoint.equals( this.currentPoint ) ) {

    				this.lineTo( firstPoint.x, firstPoint.y );

    			}

    		}

    		this.curves.push( curve );

    		const lastPoint = curve.getPoint( 1 );
    		this.currentPoint.copy( lastPoint );

    		return this;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.currentPoint.copy( source.currentPoint );

    		return this;

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.currentPoint = this.currentPoint.toArray();

    		return data;

    	}

    	fromJSON( json ) {

    		super.fromJSON( json );

    		this.currentPoint.fromArray( json.currentPoint );

    		return this;

    	}

    }

    class LatheGeometry extends BufferGeometry {

    	constructor( points = [ new Vector2( 0, - 0.5 ), new Vector2( 0.5, 0 ), new Vector2( 0, 0.5 ) ], segments = 12, phiStart = 0, phiLength = Math.PI * 2 ) {

    		super();

    		this.type = 'LatheGeometry';

    		this.parameters = {
    			points: points,
    			segments: segments,
    			phiStart: phiStart,
    			phiLength: phiLength
    		};

    		segments = Math.floor( segments );

    		// clamp phiLength so it's in range of [ 0, 2PI ]

    		phiLength = clamp( phiLength, 0, Math.PI * 2 );

    		// buffers

    		const indices = [];
    		const vertices = [];
    		const uvs = [];
    		const initNormals = [];
    		const normals = [];

    		// helper variables

    		const inverseSegments = 1.0 / segments;
    		const vertex = new Vector3();
    		const uv = new Vector2();
    		const normal = new Vector3();
    		const curNormal = new Vector3();
    		const prevNormal = new Vector3();
    		let dx = 0;
    		let dy = 0;

    		// pre-compute normals for initial "meridian"

    		for ( let j = 0; j <= ( points.length - 1 ); j ++ ) {

    			switch ( j ) {

    				case 0:				// special handling for 1st vertex on path

    					dx = points[ j + 1 ].x - points[ j ].x;
    					dy = points[ j + 1 ].y - points[ j ].y;

    					normal.x = dy * 1.0;
    					normal.y = - dx;
    					normal.z = dy * 0.0;

    					prevNormal.copy( normal );

    					normal.normalize();

    					initNormals.push( normal.x, normal.y, normal.z );

    					break;

    				case ( points.length - 1 ):	// special handling for last Vertex on path

    					initNormals.push( prevNormal.x, prevNormal.y, prevNormal.z );

    					break;

    				default:			// default handling for all vertices in between

    					dx = points[ j + 1 ].x - points[ j ].x;
    					dy = points[ j + 1 ].y - points[ j ].y;

    					normal.x = dy * 1.0;
    					normal.y = - dx;
    					normal.z = dy * 0.0;

    					curNormal.copy( normal );

    					normal.x += prevNormal.x;
    					normal.y += prevNormal.y;
    					normal.z += prevNormal.z;

    					normal.normalize();

    					initNormals.push( normal.x, normal.y, normal.z );

    					prevNormal.copy( curNormal );

    			}

    		}

    		// generate vertices, uvs and normals

    		for ( let i = 0; i <= segments; i ++ ) {

    			const phi = phiStart + i * inverseSegments * phiLength;

    			const sin = Math.sin( phi );
    			const cos = Math.cos( phi );

    			for ( let j = 0; j <= ( points.length - 1 ); j ++ ) {

    				// vertex

    				vertex.x = points[ j ].x * sin;
    				vertex.y = points[ j ].y;
    				vertex.z = points[ j ].x * cos;

    				vertices.push( vertex.x, vertex.y, vertex.z );

    				// uv

    				uv.x = i / segments;
    				uv.y = j / ( points.length - 1 );

    				uvs.push( uv.x, uv.y );

    				// normal

    				const x = initNormals[ 3 * j + 0 ] * sin;
    				const y = initNormals[ 3 * j + 1 ];
    				const z = initNormals[ 3 * j + 0 ] * cos;

    				normals.push( x, y, z );

    			}

    		}

    		// indices

    		for ( let i = 0; i < segments; i ++ ) {

    			for ( let j = 0; j < ( points.length - 1 ); j ++ ) {

    				const base = j + i * points.length;

    				const a = base;
    				const b = base + points.length;
    				const c = base + points.length + 1;
    				const d = base + 1;

    				// faces

    				indices.push( a, b, d );
    				indices.push( c, d, b );

    			}

    		}

    		// build geometry

    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );

    	}

    	static fromJSON( data ) {

    		return new LatheGeometry( data.points, data.segments, data.phiStart, data.phiLength );

    	}

    }

    class CapsuleGeometry extends LatheGeometry {

    	constructor( radius = 1, length = 1, capSegments = 4, radialSegments = 8 ) {

    		const path = new Path();
    		path.absarc( 0, - length / 2, radius, Math.PI * 1.5, 0 );
    		path.absarc( 0, length / 2, radius, 0, Math.PI * 0.5 );

    		super( path.getPoints( capSegments ), radialSegments );

    		this.type = 'CapsuleGeometry';

    		this.parameters = {
    			radius: radius,
    			height: length,
    			capSegments: capSegments,
    			radialSegments: radialSegments,
    		};

    	}

    	static fromJSON( data ) {

    		return new CapsuleGeometry( data.radius, data.length, data.capSegments, data.radialSegments );

    	}

    }

    class CircleGeometry extends BufferGeometry {

    	constructor( radius = 1, segments = 8, thetaStart = 0, thetaLength = Math.PI * 2 ) {

    		super();

    		this.type = 'CircleGeometry';

    		this.parameters = {
    			radius: radius,
    			segments: segments,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};

    		segments = Math.max( 3, segments );

    		// buffers

    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];

    		// helper variables

    		const vertex = new Vector3();
    		const uv = new Vector2();

    		// center point

    		vertices.push( 0, 0, 0 );
    		normals.push( 0, 0, 1 );
    		uvs.push( 0.5, 0.5 );

    		for ( let s = 0, i = 3; s <= segments; s ++, i += 3 ) {

    			const segment = thetaStart + s / segments * thetaLength;

    			// vertex

    			vertex.x = radius * Math.cos( segment );
    			vertex.y = radius * Math.sin( segment );

    			vertices.push( vertex.x, vertex.y, vertex.z );

    			// normal

    			normals.push( 0, 0, 1 );

    			// uvs

    			uv.x = ( vertices[ i ] / radius + 1 ) / 2;
    			uv.y = ( vertices[ i + 1 ] / radius + 1 ) / 2;

    			uvs.push( uv.x, uv.y );

    		}

    		// indices

    		for ( let i = 1; i <= segments; i ++ ) {

    			indices.push( i, i + 1, 0 );

    		}

    		// build geometry

    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

    	}

    	static fromJSON( data ) {

    		return new CircleGeometry( data.radius, data.segments, data.thetaStart, data.thetaLength );

    	}

    }

    class CylinderGeometry extends BufferGeometry {

    	constructor( radiusTop = 1, radiusBottom = 1, height = 1, radialSegments = 8, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {

    		super();

    		this.type = 'CylinderGeometry';

    		this.parameters = {
    			radiusTop: radiusTop,
    			radiusBottom: radiusBottom,
    			height: height,
    			radialSegments: radialSegments,
    			heightSegments: heightSegments,
    			openEnded: openEnded,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};

    		const scope = this;

    		radialSegments = Math.floor( radialSegments );
    		heightSegments = Math.floor( heightSegments );

    		// buffers

    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];

    		// helper variables

    		let index = 0;
    		const indexArray = [];
    		const halfHeight = height / 2;
    		let groupStart = 0;

    		// generate geometry

    		generateTorso();

    		if ( openEnded === false ) {

    			if ( radiusTop > 0 ) generateCap( true );
    			if ( radiusBottom > 0 ) generateCap( false );

    		}

    		// build geometry

    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

    		function generateTorso() {

    			const normal = new Vector3();
    			const vertex = new Vector3();

    			let groupCount = 0;

    			// this will be used to calculate the normal
    			const slope = ( radiusBottom - radiusTop ) / height;

    			// generate vertices, normals and uvs

    			for ( let y = 0; y <= heightSegments; y ++ ) {

    				const indexRow = [];

    				const v = y / heightSegments;

    				// calculate the radius of the current row

    				const radius = v * ( radiusBottom - radiusTop ) + radiusTop;

    				for ( let x = 0; x <= radialSegments; x ++ ) {

    					const u = x / radialSegments;

    					const theta = u * thetaLength + thetaStart;

    					const sinTheta = Math.sin( theta );
    					const cosTheta = Math.cos( theta );

    					// vertex

    					vertex.x = radius * sinTheta;
    					vertex.y = - v * height + halfHeight;
    					vertex.z = radius * cosTheta;
    					vertices.push( vertex.x, vertex.y, vertex.z );

    					// normal

    					normal.set( sinTheta, slope, cosTheta ).normalize();
    					normals.push( normal.x, normal.y, normal.z );

    					// uv

    					uvs.push( u, 1 - v );

    					// save index of vertex in respective row

    					indexRow.push( index ++ );

    				}

    				// now save vertices of the row in our index array

    				indexArray.push( indexRow );

    			}

    			// generate indices

    			for ( let x = 0; x < radialSegments; x ++ ) {

    				for ( let y = 0; y < heightSegments; y ++ ) {

    					// we use the index array to access the correct indices

    					const a = indexArray[ y ][ x ];
    					const b = indexArray[ y + 1 ][ x ];
    					const c = indexArray[ y + 1 ][ x + 1 ];
    					const d = indexArray[ y ][ x + 1 ];

    					// faces

    					indices.push( a, b, d );
    					indices.push( b, c, d );

    					// update group counter

    					groupCount += 6;

    				}

    			}

    			// add a group to the geometry. this will ensure multi material support

    			scope.addGroup( groupStart, groupCount, 0 );

    			// calculate new start value for groups

    			groupStart += groupCount;

    		}

    		function generateCap( top ) {

    			// save the index of the first center vertex
    			const centerIndexStart = index;

    			const uv = new Vector2();
    			const vertex = new Vector3();

    			let groupCount = 0;

    			const radius = ( top === true ) ? radiusTop : radiusBottom;
    			const sign = ( top === true ) ? 1 : - 1;

    			// first we generate the center vertex data of the cap.
    			// because the geometry needs one set of uvs per face,
    			// we must generate a center vertex per face/segment

    			for ( let x = 1; x <= radialSegments; x ++ ) {

    				// vertex

    				vertices.push( 0, halfHeight * sign, 0 );

    				// normal

    				normals.push( 0, sign, 0 );

    				// uv

    				uvs.push( 0.5, 0.5 );

    				// increase index

    				index ++;

    			}

    			// save the index of the last center vertex
    			const centerIndexEnd = index;

    			// now we generate the surrounding vertices, normals and uvs

    			for ( let x = 0; x <= radialSegments; x ++ ) {

    				const u = x / radialSegments;
    				const theta = u * thetaLength + thetaStart;

    				const cosTheta = Math.cos( theta );
    				const sinTheta = Math.sin( theta );

    				// vertex

    				vertex.x = radius * sinTheta;
    				vertex.y = halfHeight * sign;
    				vertex.z = radius * cosTheta;
    				vertices.push( vertex.x, vertex.y, vertex.z );

    				// normal

    				normals.push( 0, sign, 0 );

    				// uv

    				uv.x = ( cosTheta * 0.5 ) + 0.5;
    				uv.y = ( sinTheta * 0.5 * sign ) + 0.5;
    				uvs.push( uv.x, uv.y );

    				// increase index

    				index ++;

    			}

    			// generate indices

    			for ( let x = 0; x < radialSegments; x ++ ) {

    				const c = centerIndexStart + x;
    				const i = centerIndexEnd + x;

    				if ( top === true ) {

    					// face top

    					indices.push( i, i + 1, c );

    				} else {

    					// face bottom

    					indices.push( i + 1, i, c );

    				}

    				groupCount += 3;

    			}

    			// add a group to the geometry. this will ensure multi material support

    			scope.addGroup( groupStart, groupCount, top === true ? 1 : 2 );

    			// calculate new start value for groups

    			groupStart += groupCount;

    		}

    	}

    	static fromJSON( data ) {

    		return new CylinderGeometry( data.radiusTop, data.radiusBottom, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength );

    	}

    }

    class ConeGeometry extends CylinderGeometry {

    	constructor( radius = 1, height = 1, radialSegments = 8, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {

    		super( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );

    		this.type = 'ConeGeometry';

    		this.parameters = {
    			radius: radius,
    			height: height,
    			radialSegments: radialSegments,
    			heightSegments: heightSegments,
    			openEnded: openEnded,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};

    	}

    	static fromJSON( data ) {

    		return new ConeGeometry( data.radius, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength );

    	}

    }

    class PolyhedronGeometry extends BufferGeometry {

    	constructor( vertices = [], indices = [], radius = 1, detail = 0 ) {

    		super();

    		this.type = 'PolyhedronGeometry';

    		this.parameters = {
    			vertices: vertices,
    			indices: indices,
    			radius: radius,
    			detail: detail
    		};

    		// default buffer data

    		const vertexBuffer = [];
    		const uvBuffer = [];

    		// the subdivision creates the vertex buffer data

    		subdivide( detail );

    		// all vertices should lie on a conceptual sphere with a given radius

    		applyRadius( radius );

    		// finally, create the uv data

    		generateUVs();

    		// build non-indexed geometry

    		this.setAttribute( 'position', new Float32BufferAttribute( vertexBuffer, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( vertexBuffer.slice(), 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvBuffer, 2 ) );

    		if ( detail === 0 ) {

    			this.computeVertexNormals(); // flat normals

    		} else {

    			this.normalizeNormals(); // smooth normals

    		}

    		// helper functions

    		function subdivide( detail ) {

    			const a = new Vector3();
    			const b = new Vector3();
    			const c = new Vector3();

    			// iterate over all faces and apply a subdivison with the given detail value

    			for ( let i = 0; i < indices.length; i += 3 ) {

    				// get the vertices of the face

    				getVertexByIndex( indices[ i + 0 ], a );
    				getVertexByIndex( indices[ i + 1 ], b );
    				getVertexByIndex( indices[ i + 2 ], c );

    				// perform subdivision

    				subdivideFace( a, b, c, detail );

    			}

    		}

    		function subdivideFace( a, b, c, detail ) {

    			const cols = detail + 1;

    			// we use this multidimensional array as a data structure for creating the subdivision

    			const v = [];

    			// construct all of the vertices for this subdivision

    			for ( let i = 0; i <= cols; i ++ ) {

    				v[ i ] = [];

    				const aj = a.clone().lerp( c, i / cols );
    				const bj = b.clone().lerp( c, i / cols );

    				const rows = cols - i;

    				for ( let j = 0; j <= rows; j ++ ) {

    					if ( j === 0 && i === cols ) {

    						v[ i ][ j ] = aj;

    					} else {

    						v[ i ][ j ] = aj.clone().lerp( bj, j / rows );

    					}

    				}

    			}

    			// construct all of the faces

    			for ( let i = 0; i < cols; i ++ ) {

    				for ( let j = 0; j < 2 * ( cols - i ) - 1; j ++ ) {

    					const k = Math.floor( j / 2 );

    					if ( j % 2 === 0 ) {

    						pushVertex( v[ i ][ k + 1 ] );
    						pushVertex( v[ i + 1 ][ k ] );
    						pushVertex( v[ i ][ k ] );

    					} else {

    						pushVertex( v[ i ][ k + 1 ] );
    						pushVertex( v[ i + 1 ][ k + 1 ] );
    						pushVertex( v[ i + 1 ][ k ] );

    					}

    				}

    			}

    		}

    		function applyRadius( radius ) {

    			const vertex = new Vector3();

    			// iterate over the entire buffer and apply the radius to each vertex

    			for ( let i = 0; i < vertexBuffer.length; i += 3 ) {

    				vertex.x = vertexBuffer[ i + 0 ];
    				vertex.y = vertexBuffer[ i + 1 ];
    				vertex.z = vertexBuffer[ i + 2 ];

    				vertex.normalize().multiplyScalar( radius );

    				vertexBuffer[ i + 0 ] = vertex.x;
    				vertexBuffer[ i + 1 ] = vertex.y;
    				vertexBuffer[ i + 2 ] = vertex.z;

    			}

    		}

    		function generateUVs() {

    			const vertex = new Vector3();

    			for ( let i = 0; i < vertexBuffer.length; i += 3 ) {

    				vertex.x = vertexBuffer[ i + 0 ];
    				vertex.y = vertexBuffer[ i + 1 ];
    				vertex.z = vertexBuffer[ i + 2 ];

    				const u = azimuth( vertex ) / 2 / Math.PI + 0.5;
    				const v = inclination( vertex ) / Math.PI + 0.5;
    				uvBuffer.push( u, 1 - v );

    			}

    			correctUVs();

    			correctSeam();

    		}

    		function correctSeam() {

    			// handle case when face straddles the seam, see #3269

    			for ( let i = 0; i < uvBuffer.length; i += 6 ) {

    				// uv data of a single face

    				const x0 = uvBuffer[ i + 0 ];
    				const x1 = uvBuffer[ i + 2 ];
    				const x2 = uvBuffer[ i + 4 ];

    				const max = Math.max( x0, x1, x2 );
    				const min = Math.min( x0, x1, x2 );

    				// 0.9 is somewhat arbitrary

    				if ( max > 0.9 && min < 0.1 ) {

    					if ( x0 < 0.2 ) uvBuffer[ i + 0 ] += 1;
    					if ( x1 < 0.2 ) uvBuffer[ i + 2 ] += 1;
    					if ( x2 < 0.2 ) uvBuffer[ i + 4 ] += 1;

    				}

    			}

    		}

    		function pushVertex( vertex ) {

    			vertexBuffer.push( vertex.x, vertex.y, vertex.z );

    		}

    		function getVertexByIndex( index, vertex ) {

    			const stride = index * 3;

    			vertex.x = vertices[ stride + 0 ];
    			vertex.y = vertices[ stride + 1 ];
    			vertex.z = vertices[ stride + 2 ];

    		}

    		function correctUVs() {

    			const a = new Vector3();
    			const b = new Vector3();
    			const c = new Vector3();

    			const centroid = new Vector3();

    			const uvA = new Vector2();
    			const uvB = new Vector2();
    			const uvC = new Vector2();

    			for ( let i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6 ) {

    				a.set( vertexBuffer[ i + 0 ], vertexBuffer[ i + 1 ], vertexBuffer[ i + 2 ] );
    				b.set( vertexBuffer[ i + 3 ], vertexBuffer[ i + 4 ], vertexBuffer[ i + 5 ] );
    				c.set( vertexBuffer[ i + 6 ], vertexBuffer[ i + 7 ], vertexBuffer[ i + 8 ] );

    				uvA.set( uvBuffer[ j + 0 ], uvBuffer[ j + 1 ] );
    				uvB.set( uvBuffer[ j + 2 ], uvBuffer[ j + 3 ] );
    				uvC.set( uvBuffer[ j + 4 ], uvBuffer[ j + 5 ] );

    				centroid.copy( a ).add( b ).add( c ).divideScalar( 3 );

    				const azi = azimuth( centroid );

    				correctUV( uvA, j + 0, a, azi );
    				correctUV( uvB, j + 2, b, azi );
    				correctUV( uvC, j + 4, c, azi );

    			}

    		}

    		function correctUV( uv, stride, vector, azimuth ) {

    			if ( ( azimuth < 0 ) && ( uv.x === 1 ) ) {

    				uvBuffer[ stride ] = uv.x - 1;

    			}

    			if ( ( vector.x === 0 ) && ( vector.z === 0 ) ) {

    				uvBuffer[ stride ] = azimuth / 2 / Math.PI + 0.5;

    			}

    		}

    		// Angle around the Y axis, counter-clockwise when looking from above.

    		function azimuth( vector ) {

    			return Math.atan2( vector.z, - vector.x );

    		}


    		// Angle above the XZ plane.

    		function inclination( vector ) {

    			return Math.atan2( - vector.y, Math.sqrt( ( vector.x * vector.x ) + ( vector.z * vector.z ) ) );

    		}

    	}

    	static fromJSON( data ) {

    		return new PolyhedronGeometry( data.vertices, data.indices, data.radius, data.details );

    	}

    }

    class DodecahedronGeometry extends PolyhedronGeometry {

    	constructor( radius = 1, detail = 0 ) {

    		const t = ( 1 + Math.sqrt( 5 ) ) / 2;
    		const r = 1 / t;

    		const vertices = [

    			// (±1, ±1, ±1)
    			- 1, - 1, - 1,	- 1, - 1, 1,
    			- 1, 1, - 1, - 1, 1, 1,
    			1, - 1, - 1, 1, - 1, 1,
    			1, 1, - 1, 1, 1, 1,

    			// (0, ±1/φ, ±φ)
    			0, - r, - t, 0, - r, t,
    			0, r, - t, 0, r, t,

    			// (±1/φ, ±φ, 0)
    			- r, - t, 0, - r, t, 0,
    			r, - t, 0, r, t, 0,

    			// (±φ, 0, ±1/φ)
    			- t, 0, - r, t, 0, - r,
    			- t, 0, r, t, 0, r
    		];

    		const indices = [
    			3, 11, 7, 	3, 7, 15, 	3, 15, 13,
    			7, 19, 17, 	7, 17, 6, 	7, 6, 15,
    			17, 4, 8, 	17, 8, 10, 	17, 10, 6,
    			8, 0, 16, 	8, 16, 2, 	8, 2, 10,
    			0, 12, 1, 	0, 1, 18, 	0, 18, 16,
    			6, 10, 2, 	6, 2, 13, 	6, 13, 15,
    			2, 16, 18, 	2, 18, 3, 	2, 3, 13,
    			18, 1, 9, 	18, 9, 11, 	18, 11, 3,
    			4, 14, 12, 	4, 12, 0, 	4, 0, 8,
    			11, 9, 5, 	11, 5, 19, 	11, 19, 7,
    			19, 5, 14, 	19, 14, 4, 	19, 4, 17,
    			1, 12, 14, 	1, 14, 5, 	1, 5, 9
    		];

    		super( vertices, indices, radius, detail );

    		this.type = 'DodecahedronGeometry';

    		this.parameters = {
    			radius: radius,
    			detail: detail
    		};

    	}

    	static fromJSON( data ) {

    		return new DodecahedronGeometry( data.radius, data.detail );

    	}

    }

    const _v0 = /*@__PURE__*/ new Vector3();
    const _v1$1 = /*@__PURE__*/ new Vector3();
    const _normal = /*@__PURE__*/ new Vector3();
    const _triangle = /*@__PURE__*/ new Triangle();

    class EdgesGeometry extends BufferGeometry {

    	constructor( geometry = null, thresholdAngle = 1 ) {

    		super();

    		this.type = 'EdgesGeometry';

    		this.parameters = {
    			geometry: geometry,
    			thresholdAngle: thresholdAngle
    		};

    		if ( geometry !== null ) {

    			const precisionPoints = 4;
    			const precision = Math.pow( 10, precisionPoints );
    			const thresholdDot = Math.cos( DEG2RAD * thresholdAngle );

    			const indexAttr = geometry.getIndex();
    			const positionAttr = geometry.getAttribute( 'position' );
    			const indexCount = indexAttr ? indexAttr.count : positionAttr.count;

    			const indexArr = [ 0, 0, 0 ];
    			const vertKeys = [ 'a', 'b', 'c' ];
    			const hashes = new Array( 3 );

    			const edgeData = {};
    			const vertices = [];
    			for ( let i = 0; i < indexCount; i += 3 ) {

    				if ( indexAttr ) {

    					indexArr[ 0 ] = indexAttr.getX( i );
    					indexArr[ 1 ] = indexAttr.getX( i + 1 );
    					indexArr[ 2 ] = indexAttr.getX( i + 2 );

    				} else {

    					indexArr[ 0 ] = i;
    					indexArr[ 1 ] = i + 1;
    					indexArr[ 2 ] = i + 2;

    				}

    				const { a, b, c } = _triangle;
    				a.fromBufferAttribute( positionAttr, indexArr[ 0 ] );
    				b.fromBufferAttribute( positionAttr, indexArr[ 1 ] );
    				c.fromBufferAttribute( positionAttr, indexArr[ 2 ] );
    				_triangle.getNormal( _normal );

    				// create hashes for the edge from the vertices
    				hashes[ 0 ] = `${ Math.round( a.x * precision ) },${ Math.round( a.y * precision ) },${ Math.round( a.z * precision ) }`;
    				hashes[ 1 ] = `${ Math.round( b.x * precision ) },${ Math.round( b.y * precision ) },${ Math.round( b.z * precision ) }`;
    				hashes[ 2 ] = `${ Math.round( c.x * precision ) },${ Math.round( c.y * precision ) },${ Math.round( c.z * precision ) }`;

    				// skip degenerate triangles
    				if ( hashes[ 0 ] === hashes[ 1 ] || hashes[ 1 ] === hashes[ 2 ] || hashes[ 2 ] === hashes[ 0 ] ) {

    					continue;

    				}

    				// iterate over every edge
    				for ( let j = 0; j < 3; j ++ ) {

    					// get the first and next vertex making up the edge
    					const jNext = ( j + 1 ) % 3;
    					const vecHash0 = hashes[ j ];
    					const vecHash1 = hashes[ jNext ];
    					const v0 = _triangle[ vertKeys[ j ] ];
    					const v1 = _triangle[ vertKeys[ jNext ] ];

    					const hash = `${ vecHash0 }_${ vecHash1 }`;
    					const reverseHash = `${ vecHash1 }_${ vecHash0 }`;

    					if ( reverseHash in edgeData && edgeData[ reverseHash ] ) {

    						// if we found a sibling edge add it into the vertex array if
    						// it meets the angle threshold and delete the edge from the map.
    						if ( _normal.dot( edgeData[ reverseHash ].normal ) <= thresholdDot ) {

    							vertices.push( v0.x, v0.y, v0.z );
    							vertices.push( v1.x, v1.y, v1.z );

    						}

    						edgeData[ reverseHash ] = null;

    					} else if ( ! ( hash in edgeData ) ) {

    						// if we've already got an edge here then skip adding a new one
    						edgeData[ hash ] = {

    							index0: indexArr[ j ],
    							index1: indexArr[ jNext ],
    							normal: _normal.clone(),

    						};

    					}

    				}

    			}

    			// iterate over all remaining, unmatched edges and add them to the vertex array
    			for ( const key in edgeData ) {

    				if ( edgeData[ key ] ) {

    					const { index0, index1 } = edgeData[ key ];
    					_v0.fromBufferAttribute( positionAttr, index0 );
    					_v1$1.fromBufferAttribute( positionAttr, index1 );

    					vertices.push( _v0.x, _v0.y, _v0.z );
    					vertices.push( _v1$1.x, _v1$1.y, _v1$1.z );

    				}

    			}

    			this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );

    		}

    	}

    }

    class Shape extends Path {

    	constructor( points ) {

    		super( points );

    		this.uuid = generateUUID();

    		this.type = 'Shape';

    		this.holes = [];

    	}

    	getPointsHoles( divisions ) {

    		const holesPts = [];

    		for ( let i = 0, l = this.holes.length; i < l; i ++ ) {

    			holesPts[ i ] = this.holes[ i ].getPoints( divisions );

    		}

    		return holesPts;

    	}

    	// get points of shape and holes (keypoints based on segments parameter)

    	extractPoints( divisions ) {

    		return {

    			shape: this.getPoints( divisions ),
    			holes: this.getPointsHoles( divisions )

    		};

    	}

    	copy( source ) {

    		super.copy( source );

    		this.holes = [];

    		for ( let i = 0, l = source.holes.length; i < l; i ++ ) {

    			const hole = source.holes[ i ];

    			this.holes.push( hole.clone() );

    		}

    		return this;

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.uuid = this.uuid;
    		data.holes = [];

    		for ( let i = 0, l = this.holes.length; i < l; i ++ ) {

    			const hole = this.holes[ i ];
    			data.holes.push( hole.toJSON() );

    		}

    		return data;

    	}

    	fromJSON( json ) {

    		super.fromJSON( json );

    		this.uuid = json.uuid;
    		this.holes = [];

    		for ( let i = 0, l = json.holes.length; i < l; i ++ ) {

    			const hole = json.holes[ i ];
    			this.holes.push( new Path().fromJSON( hole ) );

    		}

    		return this;

    	}

    }

    /**
     * Port from https://github.com/mapbox/earcut (v2.2.2)
     */

    const Earcut = {

    	triangulate: function ( data, holeIndices, dim = 2 ) {

    		const hasHoles = holeIndices && holeIndices.length;
    		const outerLen = hasHoles ? holeIndices[ 0 ] * dim : data.length;
    		let outerNode = linkedList( data, 0, outerLen, dim, true );
    		const triangles = [];

    		if ( ! outerNode || outerNode.next === outerNode.prev ) return triangles;

    		let minX, minY, maxX, maxY, x, y, invSize;

    		if ( hasHoles ) outerNode = eliminateHoles( data, holeIndices, outerNode, dim );

    		// if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox
    		if ( data.length > 80 * dim ) {

    			minX = maxX = data[ 0 ];
    			minY = maxY = data[ 1 ];

    			for ( let i = dim; i < outerLen; i += dim ) {

    				x = data[ i ];
    				y = data[ i + 1 ];
    				if ( x < minX ) minX = x;
    				if ( y < minY ) minY = y;
    				if ( x > maxX ) maxX = x;
    				if ( y > maxY ) maxY = y;

    			}

    			// minX, minY and invSize are later used to transform coords into integers for z-order calculation
    			invSize = Math.max( maxX - minX, maxY - minY );
    			invSize = invSize !== 0 ? 1 / invSize : 0;

    		}

    		earcutLinked( outerNode, triangles, dim, minX, minY, invSize );

    		return triangles;

    	}

    };

    // create a circular doubly linked list from polygon points in the specified winding order
    function linkedList( data, start, end, dim, clockwise ) {

    	let i, last;

    	if ( clockwise === ( signedArea( data, start, end, dim ) > 0 ) ) {

    		for ( i = start; i < end; i += dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );

    	} else {

    		for ( i = end - dim; i >= start; i -= dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );

    	}

    	if ( last && equals( last, last.next ) ) {

    		removeNode( last );
    		last = last.next;

    	}

    	return last;

    }

    // eliminate colinear or duplicate points
    function filterPoints( start, end ) {

    	if ( ! start ) return start;
    	if ( ! end ) end = start;

    	let p = start,
    		again;
    	do {

    		again = false;

    		if ( ! p.steiner && ( equals( p, p.next ) || area( p.prev, p, p.next ) === 0 ) ) {

    			removeNode( p );
    			p = end = p.prev;
    			if ( p === p.next ) break;
    			again = true;

    		} else {

    			p = p.next;

    		}

    	} while ( again || p !== end );

    	return end;

    }

    // main ear slicing loop which triangulates a polygon (given as a linked list)
    function earcutLinked( ear, triangles, dim, minX, minY, invSize, pass ) {

    	if ( ! ear ) return;

    	// interlink polygon nodes in z-order
    	if ( ! pass && invSize ) indexCurve( ear, minX, minY, invSize );

    	let stop = ear,
    		prev, next;

    	// iterate through ears, slicing them one by one
    	while ( ear.prev !== ear.next ) {

    		prev = ear.prev;
    		next = ear.next;

    		if ( invSize ? isEarHashed( ear, minX, minY, invSize ) : isEar( ear ) ) {

    			// cut off the triangle
    			triangles.push( prev.i / dim );
    			triangles.push( ear.i / dim );
    			triangles.push( next.i / dim );

    			removeNode( ear );

    			// skipping the next vertex leads to less sliver triangles
    			ear = next.next;
    			stop = next.next;

    			continue;

    		}

    		ear = next;

    		// if we looped through the whole remaining polygon and can't find any more ears
    		if ( ear === stop ) {

    			// try filtering points and slicing again
    			if ( ! pass ) {

    				earcutLinked( filterPoints( ear ), triangles, dim, minX, minY, invSize, 1 );

    				// if this didn't work, try curing all small self-intersections locally

    			} else if ( pass === 1 ) {

    				ear = cureLocalIntersections( filterPoints( ear ), triangles, dim );
    				earcutLinked( ear, triangles, dim, minX, minY, invSize, 2 );

    				// as a last resort, try splitting the remaining polygon into two

    			} else if ( pass === 2 ) {

    				splitEarcut( ear, triangles, dim, minX, minY, invSize );

    			}

    			break;

    		}

    	}

    }

    // check whether a polygon node forms a valid ear with adjacent nodes
    function isEar( ear ) {

    	const a = ear.prev,
    		b = ear,
    		c = ear.next;

    	if ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear

    	// now make sure we don't have other points inside the potential ear
    	let p = ear.next.next;

    	while ( p !== ear.prev ) {

    		if ( pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
    			area( p.prev, p, p.next ) >= 0 ) return false;
    		p = p.next;

    	}

    	return true;

    }

    function isEarHashed( ear, minX, minY, invSize ) {

    	const a = ear.prev,
    		b = ear,
    		c = ear.next;

    	if ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear

    	// triangle bbox; min & max are calculated like this for speed
    	const minTX = a.x < b.x ? ( a.x < c.x ? a.x : c.x ) : ( b.x < c.x ? b.x : c.x ),
    		minTY = a.y < b.y ? ( a.y < c.y ? a.y : c.y ) : ( b.y < c.y ? b.y : c.y ),
    		maxTX = a.x > b.x ? ( a.x > c.x ? a.x : c.x ) : ( b.x > c.x ? b.x : c.x ),
    		maxTY = a.y > b.y ? ( a.y > c.y ? a.y : c.y ) : ( b.y > c.y ? b.y : c.y );

    	// z-order range for the current triangle bbox;
    	const minZ = zOrder( minTX, minTY, minX, minY, invSize ),
    		maxZ = zOrder( maxTX, maxTY, minX, minY, invSize );

    	let p = ear.prevZ,
    		n = ear.nextZ;

    	// look for points inside the triangle in both directions
    	while ( p && p.z >= minZ && n && n.z <= maxZ ) {

    		if ( p !== ear.prev && p !== ear.next &&
    			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
    			area( p.prev, p, p.next ) >= 0 ) return false;
    		p = p.prevZ;

    		if ( n !== ear.prev && n !== ear.next &&
    			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y ) &&
    			area( n.prev, n, n.next ) >= 0 ) return false;
    		n = n.nextZ;

    	}

    	// look for remaining points in decreasing z-order
    	while ( p && p.z >= minZ ) {

    		if ( p !== ear.prev && p !== ear.next &&
    			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
    			area( p.prev, p, p.next ) >= 0 ) return false;
    		p = p.prevZ;

    	}

    	// look for remaining points in increasing z-order
    	while ( n && n.z <= maxZ ) {

    		if ( n !== ear.prev && n !== ear.next &&
    			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y ) &&
    			area( n.prev, n, n.next ) >= 0 ) return false;
    		n = n.nextZ;

    	}

    	return true;

    }

    // go through all polygon nodes and cure small local self-intersections
    function cureLocalIntersections( start, triangles, dim ) {

    	let p = start;
    	do {

    		const a = p.prev,
    			b = p.next.next;

    		if ( ! equals( a, b ) && intersects( a, p, p.next, b ) && locallyInside( a, b ) && locallyInside( b, a ) ) {

    			triangles.push( a.i / dim );
    			triangles.push( p.i / dim );
    			triangles.push( b.i / dim );

    			// remove two nodes involved
    			removeNode( p );
    			removeNode( p.next );

    			p = start = b;

    		}

    		p = p.next;

    	} while ( p !== start );

    	return filterPoints( p );

    }

    // try splitting polygon into two and triangulate them independently
    function splitEarcut( start, triangles, dim, minX, minY, invSize ) {

    	// look for a valid diagonal that divides the polygon into two
    	let a = start;
    	do {

    		let b = a.next.next;
    		while ( b !== a.prev ) {

    			if ( a.i !== b.i && isValidDiagonal( a, b ) ) {

    				// split the polygon in two by the diagonal
    				let c = splitPolygon( a, b );

    				// filter colinear points around the cuts
    				a = filterPoints( a, a.next );
    				c = filterPoints( c, c.next );

    				// run earcut on each half
    				earcutLinked( a, triangles, dim, minX, minY, invSize );
    				earcutLinked( c, triangles, dim, minX, minY, invSize );
    				return;

    			}

    			b = b.next;

    		}

    		a = a.next;

    	} while ( a !== start );

    }

    // link every hole into the outer loop, producing a single-ring polygon without holes
    function eliminateHoles( data, holeIndices, outerNode, dim ) {

    	const queue = [];
    	let i, len, start, end, list;

    	for ( i = 0, len = holeIndices.length; i < len; i ++ ) {

    		start = holeIndices[ i ] * dim;
    		end = i < len - 1 ? holeIndices[ i + 1 ] * dim : data.length;
    		list = linkedList( data, start, end, dim, false );
    		if ( list === list.next ) list.steiner = true;
    		queue.push( getLeftmost( list ) );

    	}

    	queue.sort( compareX );

    	// process holes from left to right
    	for ( i = 0; i < queue.length; i ++ ) {

    		eliminateHole( queue[ i ], outerNode );
    		outerNode = filterPoints( outerNode, outerNode.next );

    	}

    	return outerNode;

    }

    function compareX( a, b ) {

    	return a.x - b.x;

    }

    // find a bridge between vertices that connects hole with an outer ring and link it
    function eliminateHole( hole, outerNode ) {

    	outerNode = findHoleBridge( hole, outerNode );
    	if ( outerNode ) {

    		const b = splitPolygon( outerNode, hole );

    		// filter collinear points around the cuts
    		filterPoints( outerNode, outerNode.next );
    		filterPoints( b, b.next );

    	}

    }

    // David Eberly's algorithm for finding a bridge between hole and outer polygon
    function findHoleBridge( hole, outerNode ) {

    	let p = outerNode;
    	const hx = hole.x;
    	const hy = hole.y;
    	let qx = - Infinity, m;

    	// find a segment intersected by a ray from the hole's leftmost point to the left;
    	// segment's endpoint with lesser x will be potential connection point
    	do {

    		if ( hy <= p.y && hy >= p.next.y && p.next.y !== p.y ) {

    			const x = p.x + ( hy - p.y ) * ( p.next.x - p.x ) / ( p.next.y - p.y );
    			if ( x <= hx && x > qx ) {

    				qx = x;
    				if ( x === hx ) {

    					if ( hy === p.y ) return p;
    					if ( hy === p.next.y ) return p.next;

    				}

    				m = p.x < p.next.x ? p : p.next;

    			}

    		}

    		p = p.next;

    	} while ( p !== outerNode );

    	if ( ! m ) return null;

    	if ( hx === qx ) return m; // hole touches outer segment; pick leftmost endpoint

    	// look for points inside the triangle of hole point, segment intersection and endpoint;
    	// if there are no points found, we have a valid connection;
    	// otherwise choose the point of the minimum angle with the ray as connection point

    	const stop = m,
    		mx = m.x,
    		my = m.y;
    	let tanMin = Infinity, tan;

    	p = m;

    	do {

    		if ( hx >= p.x && p.x >= mx && hx !== p.x &&
    				pointInTriangle( hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y ) ) {

    			tan = Math.abs( hy - p.y ) / ( hx - p.x ); // tangential

    			if ( locallyInside( p, hole ) && ( tan < tanMin || ( tan === tanMin && ( p.x > m.x || ( p.x === m.x && sectorContainsSector( m, p ) ) ) ) ) ) {

    				m = p;
    				tanMin = tan;

    			}

    		}

    		p = p.next;

    	} while ( p !== stop );

    	return m;

    }

    // whether sector in vertex m contains sector in vertex p in the same coordinates
    function sectorContainsSector( m, p ) {

    	return area( m.prev, m, p.prev ) < 0 && area( p.next, m, m.next ) < 0;

    }

    // interlink polygon nodes in z-order
    function indexCurve( start, minX, minY, invSize ) {

    	let p = start;
    	do {

    		if ( p.z === null ) p.z = zOrder( p.x, p.y, minX, minY, invSize );
    		p.prevZ = p.prev;
    		p.nextZ = p.next;
    		p = p.next;

    	} while ( p !== start );

    	p.prevZ.nextZ = null;
    	p.prevZ = null;

    	sortLinked( p );

    }

    // Simon Tatham's linked list merge sort algorithm
    // http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html
    function sortLinked( list ) {

    	let i, p, q, e, tail, numMerges, pSize, qSize,
    		inSize = 1;

    	do {

    		p = list;
    		list = null;
    		tail = null;
    		numMerges = 0;

    		while ( p ) {

    			numMerges ++;
    			q = p;
    			pSize = 0;
    			for ( i = 0; i < inSize; i ++ ) {

    				pSize ++;
    				q = q.nextZ;
    				if ( ! q ) break;

    			}

    			qSize = inSize;

    			while ( pSize > 0 || ( qSize > 0 && q ) ) {

    				if ( pSize !== 0 && ( qSize === 0 || ! q || p.z <= q.z ) ) {

    					e = p;
    					p = p.nextZ;
    					pSize --;

    				} else {

    					e = q;
    					q = q.nextZ;
    					qSize --;

    				}

    				if ( tail ) tail.nextZ = e;
    				else list = e;

    				e.prevZ = tail;
    				tail = e;

    			}

    			p = q;

    		}

    		tail.nextZ = null;
    		inSize *= 2;

    	} while ( numMerges > 1 );

    	return list;

    }

    // z-order of a point given coords and inverse of the longer side of data bbox
    function zOrder( x, y, minX, minY, invSize ) {

    	// coords are transformed into non-negative 15-bit integer range
    	x = 32767 * ( x - minX ) * invSize;
    	y = 32767 * ( y - minY ) * invSize;

    	x = ( x | ( x << 8 ) ) & 0x00FF00FF;
    	x = ( x | ( x << 4 ) ) & 0x0F0F0F0F;
    	x = ( x | ( x << 2 ) ) & 0x33333333;
    	x = ( x | ( x << 1 ) ) & 0x55555555;

    	y = ( y | ( y << 8 ) ) & 0x00FF00FF;
    	y = ( y | ( y << 4 ) ) & 0x0F0F0F0F;
    	y = ( y | ( y << 2 ) ) & 0x33333333;
    	y = ( y | ( y << 1 ) ) & 0x55555555;

    	return x | ( y << 1 );

    }

    // find the leftmost node of a polygon ring
    function getLeftmost( start ) {

    	let p = start,
    		leftmost = start;
    	do {

    		if ( p.x < leftmost.x || ( p.x === leftmost.x && p.y < leftmost.y ) ) leftmost = p;
    		p = p.next;

    	} while ( p !== start );

    	return leftmost;

    }

    // check if a point lies within a convex triangle
    function pointInTriangle( ax, ay, bx, by, cx, cy, px, py ) {

    	return ( cx - px ) * ( ay - py ) - ( ax - px ) * ( cy - py ) >= 0 &&
    			( ax - px ) * ( by - py ) - ( bx - px ) * ( ay - py ) >= 0 &&
    			( bx - px ) * ( cy - py ) - ( cx - px ) * ( by - py ) >= 0;

    }

    // check if a diagonal between two polygon nodes is valid (lies in polygon interior)
    function isValidDiagonal( a, b ) {

    	return a.next.i !== b.i && a.prev.i !== b.i && ! intersectsPolygon( a, b ) && // doesn't intersect other edges
    		( locallyInside( a, b ) && locallyInside( b, a ) && middleInside( a, b ) && // locally visible
    		( area( a.prev, a, b.prev ) || area( a, b.prev, b ) ) || // does not create opposite-facing sectors
    		equals( a, b ) && area( a.prev, a, a.next ) > 0 && area( b.prev, b, b.next ) > 0 ); // special zero-length case

    }

    // signed area of a triangle
    function area( p, q, r ) {

    	return ( q.y - p.y ) * ( r.x - q.x ) - ( q.x - p.x ) * ( r.y - q.y );

    }

    // check if two points are equal
    function equals( p1, p2 ) {

    	return p1.x === p2.x && p1.y === p2.y;

    }

    // check if two segments intersect
    function intersects( p1, q1, p2, q2 ) {

    	const o1 = sign( area( p1, q1, p2 ) );
    	const o2 = sign( area( p1, q1, q2 ) );
    	const o3 = sign( area( p2, q2, p1 ) );
    	const o4 = sign( area( p2, q2, q1 ) );

    	if ( o1 !== o2 && o3 !== o4 ) return true; // general case

    	if ( o1 === 0 && onSegment( p1, p2, q1 ) ) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1
    	if ( o2 === 0 && onSegment( p1, q2, q1 ) ) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1
    	if ( o3 === 0 && onSegment( p2, p1, q2 ) ) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2
    	if ( o4 === 0 && onSegment( p2, q1, q2 ) ) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2

    	return false;

    }

    // for collinear points p, q, r, check if point q lies on segment pr
    function onSegment( p, q, r ) {

    	return q.x <= Math.max( p.x, r.x ) && q.x >= Math.min( p.x, r.x ) && q.y <= Math.max( p.y, r.y ) && q.y >= Math.min( p.y, r.y );

    }

    function sign( num ) {

    	return num > 0 ? 1 : num < 0 ? - 1 : 0;

    }

    // check if a polygon diagonal intersects any polygon segments
    function intersectsPolygon( a, b ) {

    	let p = a;
    	do {

    		if ( p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&
    				intersects( p, p.next, a, b ) ) return true;
    		p = p.next;

    	} while ( p !== a );

    	return false;

    }

    // check if a polygon diagonal is locally inside the polygon
    function locallyInside( a, b ) {

    	return area( a.prev, a, a.next ) < 0 ?
    		area( a, b, a.next ) >= 0 && area( a, a.prev, b ) >= 0 :
    		area( a, b, a.prev ) < 0 || area( a, a.next, b ) < 0;

    }

    // check if the middle point of a polygon diagonal is inside the polygon
    function middleInside( a, b ) {

    	let p = a,
    		inside = false;
    	const px = ( a.x + b.x ) / 2,
    		py = ( a.y + b.y ) / 2;
    	do {

    		if ( ( ( p.y > py ) !== ( p.next.y > py ) ) && p.next.y !== p.y &&
    				( px < ( p.next.x - p.x ) * ( py - p.y ) / ( p.next.y - p.y ) + p.x ) )
    			inside = ! inside;
    		p = p.next;

    	} while ( p !== a );

    	return inside;

    }

    // link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;
    // if one belongs to the outer ring and another to a hole, it merges it into a single ring
    function splitPolygon( a, b ) {

    	const a2 = new Node( a.i, a.x, a.y ),
    		b2 = new Node( b.i, b.x, b.y ),
    		an = a.next,
    		bp = b.prev;

    	a.next = b;
    	b.prev = a;

    	a2.next = an;
    	an.prev = a2;

    	b2.next = a2;
    	a2.prev = b2;

    	bp.next = b2;
    	b2.prev = bp;

    	return b2;

    }

    // create a node and optionally link it with previous one (in a circular doubly linked list)
    function insertNode( i, x, y, last ) {

    	const p = new Node( i, x, y );

    	if ( ! last ) {

    		p.prev = p;
    		p.next = p;

    	} else {

    		p.next = last.next;
    		p.prev = last;
    		last.next.prev = p;
    		last.next = p;

    	}

    	return p;

    }

    function removeNode( p ) {

    	p.next.prev = p.prev;
    	p.prev.next = p.next;

    	if ( p.prevZ ) p.prevZ.nextZ = p.nextZ;
    	if ( p.nextZ ) p.nextZ.prevZ = p.prevZ;

    }

    function Node( i, x, y ) {

    	// vertex index in coordinates array
    	this.i = i;

    	// vertex coordinates
    	this.x = x;
    	this.y = y;

    	// previous and next vertex nodes in a polygon ring
    	this.prev = null;
    	this.next = null;

    	// z-order curve value
    	this.z = null;

    	// previous and next nodes in z-order
    	this.prevZ = null;
    	this.nextZ = null;

    	// indicates whether this is a steiner point
    	this.steiner = false;

    }

    function signedArea( data, start, end, dim ) {

    	let sum = 0;
    	for ( let i = start, j = end - dim; i < end; i += dim ) {

    		sum += ( data[ j ] - data[ i ] ) * ( data[ i + 1 ] + data[ j + 1 ] );
    		j = i;

    	}

    	return sum;

    }

    class ShapeUtils {

    	// calculate area of the contour polygon

    	static area( contour ) {

    		const n = contour.length;
    		let a = 0.0;

    		for ( let p = n - 1, q = 0; q < n; p = q ++ ) {

    			a += contour[ p ].x * contour[ q ].y - contour[ q ].x * contour[ p ].y;

    		}

    		return a * 0.5;

    	}

    	static isClockWise( pts ) {

    		return ShapeUtils.area( pts ) < 0;

    	}

    	static triangulateShape( contour, holes ) {

    		const vertices = []; // flat array of vertices like [ x0,y0, x1,y1, x2,y2, ... ]
    		const holeIndices = []; // array of hole indices
    		const faces = []; // final array of vertex indices like [ [ a,b,d ], [ b,c,d ] ]

    		removeDupEndPts( contour );
    		addContour( vertices, contour );

    		//

    		let holeIndex = contour.length;

    		holes.forEach( removeDupEndPts );

    		for ( let i = 0; i < holes.length; i ++ ) {

    			holeIndices.push( holeIndex );
    			holeIndex += holes[ i ].length;
    			addContour( vertices, holes[ i ] );

    		}

    		//

    		const triangles = Earcut.triangulate( vertices, holeIndices );

    		//

    		for ( let i = 0; i < triangles.length; i += 3 ) {

    			faces.push( triangles.slice( i, i + 3 ) );

    		}

    		return faces;

    	}

    }

    function removeDupEndPts( points ) {

    	const l = points.length;

    	if ( l > 2 && points[ l - 1 ].equals( points[ 0 ] ) ) {

    		points.pop();

    	}

    }

    function addContour( vertices, contour ) {

    	for ( let i = 0; i < contour.length; i ++ ) {

    		vertices.push( contour[ i ].x );
    		vertices.push( contour[ i ].y );

    	}

    }

    /**
     * Creates extruded geometry from a path shape.
     *
     * parameters = {
     *
     *  curveSegments: <int>, // number of points on the curves
     *  steps: <int>, // number of points for z-side extrusions / used for subdividing segments of extrude spline too
     *  depth: <float>, // Depth to extrude the shape
     *
     *  bevelEnabled: <bool>, // turn on bevel
     *  bevelThickness: <float>, // how deep into the original shape bevel goes
     *  bevelSize: <float>, // how far from shape outline (including bevelOffset) is bevel
     *  bevelOffset: <float>, // how far from shape outline does bevel start
     *  bevelSegments: <int>, // number of bevel layers
     *
     *  extrudePath: <THREE.Curve> // curve to extrude shape along
     *
     *  UVGenerator: <Object> // object that provides UV generator functions
     *
     * }
     */

    class ExtrudeGeometry extends BufferGeometry {

    	constructor( shapes = new Shape( [ new Vector2( 0.5, 0.5 ), new Vector2( - 0.5, 0.5 ), new Vector2( - 0.5, - 0.5 ), new Vector2( 0.5, - 0.5 ) ] ), options = {} ) {

    		super();

    		this.type = 'ExtrudeGeometry';

    		this.parameters = {
    			shapes: shapes,
    			options: options
    		};

    		shapes = Array.isArray( shapes ) ? shapes : [ shapes ];

    		const scope = this;

    		const verticesArray = [];
    		const uvArray = [];

    		for ( let i = 0, l = shapes.length; i < l; i ++ ) {

    			const shape = shapes[ i ];
    			addShape( shape );

    		}

    		// build geometry

    		this.setAttribute( 'position', new Float32BufferAttribute( verticesArray, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvArray, 2 ) );

    		this.computeVertexNormals();

    		// functions

    		function addShape( shape ) {

    			const placeholder = [];

    			// options

    			const curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;
    			const steps = options.steps !== undefined ? options.steps : 1;
    			const depth = options.depth !== undefined ? options.depth : 1;

    			let bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true;
    			let bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 0.2;
    			let bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 0.1;
    			let bevelOffset = options.bevelOffset !== undefined ? options.bevelOffset : 0;
    			let bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;

    			const extrudePath = options.extrudePath;

    			const uvgen = options.UVGenerator !== undefined ? options.UVGenerator : WorldUVGenerator;

    			//

    			let extrudePts, extrudeByPath = false;
    			let splineTube, binormal, normal, position2;

    			if ( extrudePath ) {

    				extrudePts = extrudePath.getSpacedPoints( steps );

    				extrudeByPath = true;
    				bevelEnabled = false; // bevels not supported for path extrusion

    				// SETUP TNB variables

    				// TODO1 - have a .isClosed in spline?

    				splineTube = extrudePath.computeFrenetFrames( steps, false );

    				// console.log(splineTube, 'splineTube', splineTube.normals.length, 'steps', steps, 'extrudePts', extrudePts.length);

    				binormal = new Vector3();
    				normal = new Vector3();
    				position2 = new Vector3();

    			}

    			// Safeguards if bevels are not enabled

    			if ( ! bevelEnabled ) {

    				bevelSegments = 0;
    				bevelThickness = 0;
    				bevelSize = 0;
    				bevelOffset = 0;

    			}

    			// Variables initialization

    			const shapePoints = shape.extractPoints( curveSegments );

    			let vertices = shapePoints.shape;
    			const holes = shapePoints.holes;

    			const reverse = ! ShapeUtils.isClockWise( vertices );

    			if ( reverse ) {

    				vertices = vertices.reverse();

    				// Maybe we should also check if holes are in the opposite direction, just to be safe ...

    				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

    					const ahole = holes[ h ];

    					if ( ShapeUtils.isClockWise( ahole ) ) {

    						holes[ h ] = ahole.reverse();

    					}

    				}

    			}


    			const faces = ShapeUtils.triangulateShape( vertices, holes );

    			/* Vertices */

    			const contour = vertices; // vertices has all points but contour has only points of circumference

    			for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

    				const ahole = holes[ h ];

    				vertices = vertices.concat( ahole );

    			}


    			function scalePt2( pt, vec, size ) {

    				if ( ! vec ) console.error( 'THREE.ExtrudeGeometry: vec does not exist' );

    				return vec.clone().multiplyScalar( size ).add( pt );

    			}

    			const vlen = vertices.length, flen = faces.length;


    			// Find directions for point movement


    			function getBevelVec( inPt, inPrev, inNext ) {

    				// computes for inPt the corresponding point inPt' on a new contour
    				//   shifted by 1 unit (length of normalized vector) to the left
    				// if we walk along contour clockwise, this new contour is outside the old one
    				//
    				// inPt' is the intersection of the two lines parallel to the two
    				//  adjacent edges of inPt at a distance of 1 unit on the left side.

    				let v_trans_x, v_trans_y, shrink_by; // resulting translation vector for inPt

    				// good reading for geometry algorithms (here: line-line intersection)
    				// http://geomalgorithms.com/a05-_intersect-1.html

    				const v_prev_x = inPt.x - inPrev.x,
    					v_prev_y = inPt.y - inPrev.y;
    				const v_next_x = inNext.x - inPt.x,
    					v_next_y = inNext.y - inPt.y;

    				const v_prev_lensq = ( v_prev_x * v_prev_x + v_prev_y * v_prev_y );

    				// check for collinear edges
    				const collinear0 = ( v_prev_x * v_next_y - v_prev_y * v_next_x );

    				if ( Math.abs( collinear0 ) > Number.EPSILON ) {

    					// not collinear

    					// length of vectors for normalizing

    					const v_prev_len = Math.sqrt( v_prev_lensq );
    					const v_next_len = Math.sqrt( v_next_x * v_next_x + v_next_y * v_next_y );

    					// shift adjacent points by unit vectors to the left

    					const ptPrevShift_x = ( inPrev.x - v_prev_y / v_prev_len );
    					const ptPrevShift_y = ( inPrev.y + v_prev_x / v_prev_len );

    					const ptNextShift_x = ( inNext.x - v_next_y / v_next_len );
    					const ptNextShift_y = ( inNext.y + v_next_x / v_next_len );

    					// scaling factor for v_prev to intersection point

    					const sf = ( ( ptNextShift_x - ptPrevShift_x ) * v_next_y -
    							( ptNextShift_y - ptPrevShift_y ) * v_next_x ) /
    						( v_prev_x * v_next_y - v_prev_y * v_next_x );

    					// vector from inPt to intersection point

    					v_trans_x = ( ptPrevShift_x + v_prev_x * sf - inPt.x );
    					v_trans_y = ( ptPrevShift_y + v_prev_y * sf - inPt.y );

    					// Don't normalize!, otherwise sharp corners become ugly
    					//  but prevent crazy spikes
    					const v_trans_lensq = ( v_trans_x * v_trans_x + v_trans_y * v_trans_y );
    					if ( v_trans_lensq <= 2 ) {

    						return new Vector2( v_trans_x, v_trans_y );

    					} else {

    						shrink_by = Math.sqrt( v_trans_lensq / 2 );

    					}

    				} else {

    					// handle special case of collinear edges

    					let direction_eq = false; // assumes: opposite

    					if ( v_prev_x > Number.EPSILON ) {

    						if ( v_next_x > Number.EPSILON ) {

    							direction_eq = true;

    						}

    					} else {

    						if ( v_prev_x < - Number.EPSILON ) {

    							if ( v_next_x < - Number.EPSILON ) {

    								direction_eq = true;

    							}

    						} else {

    							if ( Math.sign( v_prev_y ) === Math.sign( v_next_y ) ) {

    								direction_eq = true;

    							}

    						}

    					}

    					if ( direction_eq ) {

    						// console.log("Warning: lines are a straight sequence");
    						v_trans_x = - v_prev_y;
    						v_trans_y = v_prev_x;
    						shrink_by = Math.sqrt( v_prev_lensq );

    					} else {

    						// console.log("Warning: lines are a straight spike");
    						v_trans_x = v_prev_x;
    						v_trans_y = v_prev_y;
    						shrink_by = Math.sqrt( v_prev_lensq / 2 );

    					}

    				}

    				return new Vector2( v_trans_x / shrink_by, v_trans_y / shrink_by );

    			}


    			const contourMovements = [];

    			for ( let i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {

    				if ( j === il ) j = 0;
    				if ( k === il ) k = 0;

    				//  (j)---(i)---(k)
    				// console.log('i,j,k', i, j , k)

    				contourMovements[ i ] = getBevelVec( contour[ i ], contour[ j ], contour[ k ] );

    			}

    			const holesMovements = [];
    			let oneHoleMovements, verticesMovements = contourMovements.concat();

    			for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

    				const ahole = holes[ h ];

    				oneHoleMovements = [];

    				for ( let i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {

    					if ( j === il ) j = 0;
    					if ( k === il ) k = 0;

    					//  (j)---(i)---(k)
    					oneHoleMovements[ i ] = getBevelVec( ahole[ i ], ahole[ j ], ahole[ k ] );

    				}

    				holesMovements.push( oneHoleMovements );
    				verticesMovements = verticesMovements.concat( oneHoleMovements );

    			}


    			// Loop bevelSegments, 1 for the front, 1 for the back

    			for ( let b = 0; b < bevelSegments; b ++ ) {

    				//for ( b = bevelSegments; b > 0; b -- ) {

    				const t = b / bevelSegments;
    				const z = bevelThickness * Math.cos( t * Math.PI / 2 );
    				const bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;

    				// contract shape

    				for ( let i = 0, il = contour.length; i < il; i ++ ) {

    					const vert = scalePt2( contour[ i ], contourMovements[ i ], bs );

    					v( vert.x, vert.y, - z );

    				}

    				// expand holes

    				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

    					const ahole = holes[ h ];
    					oneHoleMovements = holesMovements[ h ];

    					for ( let i = 0, il = ahole.length; i < il; i ++ ) {

    						const vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );

    						v( vert.x, vert.y, - z );

    					}

    				}

    			}

    			const bs = bevelSize + bevelOffset;

    			// Back facing vertices

    			for ( let i = 0; i < vlen; i ++ ) {

    				const vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];

    				if ( ! extrudeByPath ) {

    					v( vert.x, vert.y, 0 );

    				} else {

    					// v( vert.x, vert.y + extrudePts[ 0 ].y, extrudePts[ 0 ].x );

    					normal.copy( splineTube.normals[ 0 ] ).multiplyScalar( vert.x );
    					binormal.copy( splineTube.binormals[ 0 ] ).multiplyScalar( vert.y );

    					position2.copy( extrudePts[ 0 ] ).add( normal ).add( binormal );

    					v( position2.x, position2.y, position2.z );

    				}

    			}

    			// Add stepped vertices...
    			// Including front facing vertices

    			for ( let s = 1; s <= steps; s ++ ) {

    				for ( let i = 0; i < vlen; i ++ ) {

    					const vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];

    					if ( ! extrudeByPath ) {

    						v( vert.x, vert.y, depth / steps * s );

    					} else {

    						// v( vert.x, vert.y + extrudePts[ s - 1 ].y, extrudePts[ s - 1 ].x );

    						normal.copy( splineTube.normals[ s ] ).multiplyScalar( vert.x );
    						binormal.copy( splineTube.binormals[ s ] ).multiplyScalar( vert.y );

    						position2.copy( extrudePts[ s ] ).add( normal ).add( binormal );

    						v( position2.x, position2.y, position2.z );

    					}

    				}

    			}


    			// Add bevel segments planes

    			//for ( b = 1; b <= bevelSegments; b ++ ) {
    			for ( let b = bevelSegments - 1; b >= 0; b -- ) {

    				const t = b / bevelSegments;
    				const z = bevelThickness * Math.cos( t * Math.PI / 2 );
    				const bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;

    				// contract shape

    				for ( let i = 0, il = contour.length; i < il; i ++ ) {

    					const vert = scalePt2( contour[ i ], contourMovements[ i ], bs );
    					v( vert.x, vert.y, depth + z );

    				}

    				// expand holes

    				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

    					const ahole = holes[ h ];
    					oneHoleMovements = holesMovements[ h ];

    					for ( let i = 0, il = ahole.length; i < il; i ++ ) {

    						const vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );

    						if ( ! extrudeByPath ) {

    							v( vert.x, vert.y, depth + z );

    						} else {

    							v( vert.x, vert.y + extrudePts[ steps - 1 ].y, extrudePts[ steps - 1 ].x + z );

    						}

    					}

    				}

    			}

    			/* Faces */

    			// Top and bottom faces

    			buildLidFaces();

    			// Sides faces

    			buildSideFaces();


    			/////  Internal functions

    			function buildLidFaces() {

    				const start = verticesArray.length / 3;

    				if ( bevelEnabled ) {

    					let layer = 0; // steps + 1
    					let offset = vlen * layer;

    					// Bottom faces

    					for ( let i = 0; i < flen; i ++ ) {

    						const face = faces[ i ];
    						f3( face[ 2 ] + offset, face[ 1 ] + offset, face[ 0 ] + offset );

    					}

    					layer = steps + bevelSegments * 2;
    					offset = vlen * layer;

    					// Top faces

    					for ( let i = 0; i < flen; i ++ ) {

    						const face = faces[ i ];
    						f3( face[ 0 ] + offset, face[ 1 ] + offset, face[ 2 ] + offset );

    					}

    				} else {

    					// Bottom faces

    					for ( let i = 0; i < flen; i ++ ) {

    						const face = faces[ i ];
    						f3( face[ 2 ], face[ 1 ], face[ 0 ] );

    					}

    					// Top faces

    					for ( let i = 0; i < flen; i ++ ) {

    						const face = faces[ i ];
    						f3( face[ 0 ] + vlen * steps, face[ 1 ] + vlen * steps, face[ 2 ] + vlen * steps );

    					}

    				}

    				scope.addGroup( start, verticesArray.length / 3 - start, 0 );

    			}

    			// Create faces for the z-sides of the shape

    			function buildSideFaces() {

    				const start = verticesArray.length / 3;
    				let layeroffset = 0;
    				sidewalls( contour, layeroffset );
    				layeroffset += contour.length;

    				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

    					const ahole = holes[ h ];
    					sidewalls( ahole, layeroffset );

    					//, true
    					layeroffset += ahole.length;

    				}


    				scope.addGroup( start, verticesArray.length / 3 - start, 1 );


    			}

    			function sidewalls( contour, layeroffset ) {

    				let i = contour.length;

    				while ( -- i >= 0 ) {

    					const j = i;
    					let k = i - 1;
    					if ( k < 0 ) k = contour.length - 1;

    					//console.log('b', i,j, i-1, k,vertices.length);

    					for ( let s = 0, sl = ( steps + bevelSegments * 2 ); s < sl; s ++ ) {

    						const slen1 = vlen * s;
    						const slen2 = vlen * ( s + 1 );

    						const a = layeroffset + j + slen1,
    							b = layeroffset + k + slen1,
    							c = layeroffset + k + slen2,
    							d = layeroffset + j + slen2;

    						f4( a, b, c, d );

    					}

    				}

    			}

    			function v( x, y, z ) {

    				placeholder.push( x );
    				placeholder.push( y );
    				placeholder.push( z );

    			}


    			function f3( a, b, c ) {

    				addVertex( a );
    				addVertex( b );
    				addVertex( c );

    				const nextIndex = verticesArray.length / 3;
    				const uvs = uvgen.generateTopUV( scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1 );

    				addUV( uvs[ 0 ] );
    				addUV( uvs[ 1 ] );
    				addUV( uvs[ 2 ] );

    			}

    			function f4( a, b, c, d ) {

    				addVertex( a );
    				addVertex( b );
    				addVertex( d );

    				addVertex( b );
    				addVertex( c );
    				addVertex( d );


    				const nextIndex = verticesArray.length / 3;
    				const uvs = uvgen.generateSideWallUV( scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1 );

    				addUV( uvs[ 0 ] );
    				addUV( uvs[ 1 ] );
    				addUV( uvs[ 3 ] );

    				addUV( uvs[ 1 ] );
    				addUV( uvs[ 2 ] );
    				addUV( uvs[ 3 ] );

    			}

    			function addVertex( index ) {

    				verticesArray.push( placeholder[ index * 3 + 0 ] );
    				verticesArray.push( placeholder[ index * 3 + 1 ] );
    				verticesArray.push( placeholder[ index * 3 + 2 ] );

    			}


    			function addUV( vector2 ) {

    				uvArray.push( vector2.x );
    				uvArray.push( vector2.y );

    			}

    		}

    	}

    	toJSON() {

    		const data = super.toJSON();

    		const shapes = this.parameters.shapes;
    		const options = this.parameters.options;

    		return toJSON$1( shapes, options, data );

    	}

    	static fromJSON( data, shapes ) {

    		const geometryShapes = [];

    		for ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {

    			const shape = shapes[ data.shapes[ j ] ];

    			geometryShapes.push( shape );

    		}

    		const extrudePath = data.options.extrudePath;

    		if ( extrudePath !== undefined ) {

    			data.options.extrudePath = new Curves[ extrudePath.type ]().fromJSON( extrudePath );

    		}

    		return new ExtrudeGeometry( geometryShapes, data.options );

    	}

    }

    const WorldUVGenerator = {

    	generateTopUV: function ( geometry, vertices, indexA, indexB, indexC ) {

    		const a_x = vertices[ indexA * 3 ];
    		const a_y = vertices[ indexA * 3 + 1 ];
    		const b_x = vertices[ indexB * 3 ];
    		const b_y = vertices[ indexB * 3 + 1 ];
    		const c_x = vertices[ indexC * 3 ];
    		const c_y = vertices[ indexC * 3 + 1 ];

    		return [
    			new Vector2( a_x, a_y ),
    			new Vector2( b_x, b_y ),
    			new Vector2( c_x, c_y )
    		];

    	},

    	generateSideWallUV: function ( geometry, vertices, indexA, indexB, indexC, indexD ) {

    		const a_x = vertices[ indexA * 3 ];
    		const a_y = vertices[ indexA * 3 + 1 ];
    		const a_z = vertices[ indexA * 3 + 2 ];
    		const b_x = vertices[ indexB * 3 ];
    		const b_y = vertices[ indexB * 3 + 1 ];
    		const b_z = vertices[ indexB * 3 + 2 ];
    		const c_x = vertices[ indexC * 3 ];
    		const c_y = vertices[ indexC * 3 + 1 ];
    		const c_z = vertices[ indexC * 3 + 2 ];
    		const d_x = vertices[ indexD * 3 ];
    		const d_y = vertices[ indexD * 3 + 1 ];
    		const d_z = vertices[ indexD * 3 + 2 ];

    		if ( Math.abs( a_y - b_y ) < Math.abs( a_x - b_x ) ) {

    			return [
    				new Vector2( a_x, 1 - a_z ),
    				new Vector2( b_x, 1 - b_z ),
    				new Vector2( c_x, 1 - c_z ),
    				new Vector2( d_x, 1 - d_z )
    			];

    		} else {

    			return [
    				new Vector2( a_y, 1 - a_z ),
    				new Vector2( b_y, 1 - b_z ),
    				new Vector2( c_y, 1 - c_z ),
    				new Vector2( d_y, 1 - d_z )
    			];

    		}

    	}

    };

    function toJSON$1( shapes, options, data ) {

    	data.shapes = [];

    	if ( Array.isArray( shapes ) ) {

    		for ( let i = 0, l = shapes.length; i < l; i ++ ) {

    			const shape = shapes[ i ];

    			data.shapes.push( shape.uuid );

    		}

    	} else {

    		data.shapes.push( shapes.uuid );

    	}

    	data.options = Object.assign( {}, options );

    	if ( options.extrudePath !== undefined ) data.options.extrudePath = options.extrudePath.toJSON();

    	return data;

    }

    class IcosahedronGeometry extends PolyhedronGeometry {

    	constructor( radius = 1, detail = 0 ) {

    		const t = ( 1 + Math.sqrt( 5 ) ) / 2;

    		const vertices = [
    			- 1, t, 0, 	1, t, 0, 	- 1, - t, 0, 	1, - t, 0,
    			0, - 1, t, 	0, 1, t,	0, - 1, - t, 	0, 1, - t,
    			t, 0, - 1, 	t, 0, 1, 	- t, 0, - 1, 	- t, 0, 1
    		];

    		const indices = [
    			0, 11, 5, 	0, 5, 1, 	0, 1, 7, 	0, 7, 10, 	0, 10, 11,
    			1, 5, 9, 	5, 11, 4,	11, 10, 2,	10, 7, 6,	7, 1, 8,
    			3, 9, 4, 	3, 4, 2,	3, 2, 6,	3, 6, 8,	3, 8, 9,
    			4, 9, 5, 	2, 4, 11,	6, 2, 10,	8, 6, 7,	9, 8, 1
    		];

    		super( vertices, indices, radius, detail );

    		this.type = 'IcosahedronGeometry';

    		this.parameters = {
    			radius: radius,
    			detail: detail
    		};

    	}

    	static fromJSON( data ) {

    		return new IcosahedronGeometry( data.radius, data.detail );

    	}

    }

    class OctahedronGeometry extends PolyhedronGeometry {

    	constructor( radius = 1, detail = 0 ) {

    		const vertices = [
    			1, 0, 0, 	- 1, 0, 0,	0, 1, 0,
    			0, - 1, 0, 	0, 0, 1,	0, 0, - 1
    		];

    		const indices = [
    			0, 2, 4,	0, 4, 3,	0, 3, 5,
    			0, 5, 2,	1, 2, 5,	1, 5, 3,
    			1, 3, 4,	1, 4, 2
    		];

    		super( vertices, indices, radius, detail );

    		this.type = 'OctahedronGeometry';

    		this.parameters = {
    			radius: radius,
    			detail: detail
    		};

    	}

    	static fromJSON( data ) {

    		return new OctahedronGeometry( data.radius, data.detail );

    	}

    }

    class RingGeometry extends BufferGeometry {

    	constructor( innerRadius = 0.5, outerRadius = 1, thetaSegments = 8, phiSegments = 1, thetaStart = 0, thetaLength = Math.PI * 2 ) {

    		super();

    		this.type = 'RingGeometry';

    		this.parameters = {
    			innerRadius: innerRadius,
    			outerRadius: outerRadius,
    			thetaSegments: thetaSegments,
    			phiSegments: phiSegments,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};

    		thetaSegments = Math.max( 3, thetaSegments );
    		phiSegments = Math.max( 1, phiSegments );

    		// buffers

    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];

    		// some helper variables

    		let radius = innerRadius;
    		const radiusStep = ( ( outerRadius - innerRadius ) / phiSegments );
    		const vertex = new Vector3();
    		const uv = new Vector2();

    		// generate vertices, normals and uvs

    		for ( let j = 0; j <= phiSegments; j ++ ) {

    			for ( let i = 0; i <= thetaSegments; i ++ ) {

    				// values are generate from the inside of the ring to the outside

    				const segment = thetaStart + i / thetaSegments * thetaLength;

    				// vertex

    				vertex.x = radius * Math.cos( segment );
    				vertex.y = radius * Math.sin( segment );

    				vertices.push( vertex.x, vertex.y, vertex.z );

    				// normal

    				normals.push( 0, 0, 1 );

    				// uv

    				uv.x = ( vertex.x / outerRadius + 1 ) / 2;
    				uv.y = ( vertex.y / outerRadius + 1 ) / 2;

    				uvs.push( uv.x, uv.y );

    			}

    			// increase the radius for next row of vertices

    			radius += radiusStep;

    		}

    		// indices

    		for ( let j = 0; j < phiSegments; j ++ ) {

    			const thetaSegmentLevel = j * ( thetaSegments + 1 );

    			for ( let i = 0; i < thetaSegments; i ++ ) {

    				const segment = i + thetaSegmentLevel;

    				const a = segment;
    				const b = segment + thetaSegments + 1;
    				const c = segment + thetaSegments + 2;
    				const d = segment + 1;

    				// faces

    				indices.push( a, b, d );
    				indices.push( b, c, d );

    			}

    		}

    		// build geometry

    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

    	}

    	static fromJSON( data ) {

    		return new RingGeometry( data.innerRadius, data.outerRadius, data.thetaSegments, data.phiSegments, data.thetaStart, data.thetaLength );

    	}

    }

    class ShapeGeometry extends BufferGeometry {

    	constructor( shapes = new Shape( [ new Vector2( 0, 0.5 ), new Vector2( - 0.5, - 0.5 ), new Vector2( 0.5, - 0.5 ) ] ), curveSegments = 12 ) {

    		super();

    		this.type = 'ShapeGeometry';

    		this.parameters = {
    			shapes: shapes,
    			curveSegments: curveSegments
    		};

    		// buffers

    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];

    		// helper variables

    		let groupStart = 0;
    		let groupCount = 0;

    		// allow single and array values for "shapes" parameter

    		if ( Array.isArray( shapes ) === false ) {

    			addShape( shapes );

    		} else {

    			for ( let i = 0; i < shapes.length; i ++ ) {

    				addShape( shapes[ i ] );

    				this.addGroup( groupStart, groupCount, i ); // enables MultiMaterial support

    				groupStart += groupCount;
    				groupCount = 0;

    			}

    		}

    		// build geometry

    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );


    		// helper functions

    		function addShape( shape ) {

    			const indexOffset = vertices.length / 3;
    			const points = shape.extractPoints( curveSegments );

    			let shapeVertices = points.shape;
    			const shapeHoles = points.holes;

    			// check direction of vertices

    			if ( ShapeUtils.isClockWise( shapeVertices ) === false ) {

    				shapeVertices = shapeVertices.reverse();

    			}

    			for ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {

    				const shapeHole = shapeHoles[ i ];

    				if ( ShapeUtils.isClockWise( shapeHole ) === true ) {

    					shapeHoles[ i ] = shapeHole.reverse();

    				}

    			}

    			const faces = ShapeUtils.triangulateShape( shapeVertices, shapeHoles );

    			// join vertices of inner and outer paths to a single array

    			for ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {

    				const shapeHole = shapeHoles[ i ];
    				shapeVertices = shapeVertices.concat( shapeHole );

    			}

    			// vertices, normals, uvs

    			for ( let i = 0, l = shapeVertices.length; i < l; i ++ ) {

    				const vertex = shapeVertices[ i ];

    				vertices.push( vertex.x, vertex.y, 0 );
    				normals.push( 0, 0, 1 );
    				uvs.push( vertex.x, vertex.y ); // world uvs

    			}

    			// incides

    			for ( let i = 0, l = faces.length; i < l; i ++ ) {

    				const face = faces[ i ];

    				const a = face[ 0 ] + indexOffset;
    				const b = face[ 1 ] + indexOffset;
    				const c = face[ 2 ] + indexOffset;

    				indices.push( a, b, c );
    				groupCount += 3;

    			}

    		}

    	}

    	toJSON() {

    		const data = super.toJSON();

    		const shapes = this.parameters.shapes;

    		return toJSON( shapes, data );

    	}

    	static fromJSON( data, shapes ) {

    		const geometryShapes = [];

    		for ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {

    			const shape = shapes[ data.shapes[ j ] ];

    			geometryShapes.push( shape );

    		}

    		return new ShapeGeometry( geometryShapes, data.curveSegments );

    	}

    }

    function toJSON( shapes, data ) {

    	data.shapes = [];

    	if ( Array.isArray( shapes ) ) {

    		for ( let i = 0, l = shapes.length; i < l; i ++ ) {

    			const shape = shapes[ i ];

    			data.shapes.push( shape.uuid );

    		}

    	} else {

    		data.shapes.push( shapes.uuid );

    	}

    	return data;

    }

    class SphereGeometry extends BufferGeometry {

    	constructor( radius = 1, widthSegments = 32, heightSegments = 16, phiStart = 0, phiLength = Math.PI * 2, thetaStart = 0, thetaLength = Math.PI ) {

    		super();

    		this.type = 'SphereGeometry';

    		this.parameters = {
    			radius: radius,
    			widthSegments: widthSegments,
    			heightSegments: heightSegments,
    			phiStart: phiStart,
    			phiLength: phiLength,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};

    		widthSegments = Math.max( 3, Math.floor( widthSegments ) );
    		heightSegments = Math.max( 2, Math.floor( heightSegments ) );

    		const thetaEnd = Math.min( thetaStart + thetaLength, Math.PI );

    		let index = 0;
    		const grid = [];

    		const vertex = new Vector3();
    		const normal = new Vector3();

    		// buffers

    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];

    		// generate vertices, normals and uvs

    		for ( let iy = 0; iy <= heightSegments; iy ++ ) {

    			const verticesRow = [];

    			const v = iy / heightSegments;

    			// special case for the poles

    			let uOffset = 0;

    			if ( iy == 0 && thetaStart == 0 ) {

    				uOffset = 0.5 / widthSegments;

    			} else if ( iy == heightSegments && thetaEnd == Math.PI ) {

    				uOffset = - 0.5 / widthSegments;

    			}

    			for ( let ix = 0; ix <= widthSegments; ix ++ ) {

    				const u = ix / widthSegments;

    				// vertex

    				vertex.x = - radius * Math.cos( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );
    				vertex.y = radius * Math.cos( thetaStart + v * thetaLength );
    				vertex.z = radius * Math.sin( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );

    				vertices.push( vertex.x, vertex.y, vertex.z );

    				// normal

    				normal.copy( vertex ).normalize();
    				normals.push( normal.x, normal.y, normal.z );

    				// uv

    				uvs.push( u + uOffset, 1 - v );

    				verticesRow.push( index ++ );

    			}

    			grid.push( verticesRow );

    		}

    		// indices

    		for ( let iy = 0; iy < heightSegments; iy ++ ) {

    			for ( let ix = 0; ix < widthSegments; ix ++ ) {

    				const a = grid[ iy ][ ix + 1 ];
    				const b = grid[ iy ][ ix ];
    				const c = grid[ iy + 1 ][ ix ];
    				const d = grid[ iy + 1 ][ ix + 1 ];

    				if ( iy !== 0 || thetaStart > 0 ) indices.push( a, b, d );
    				if ( iy !== heightSegments - 1 || thetaEnd < Math.PI ) indices.push( b, c, d );

    			}

    		}

    		// build geometry

    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

    	}

    	static fromJSON( data ) {

    		return new SphereGeometry( data.radius, data.widthSegments, data.heightSegments, data.phiStart, data.phiLength, data.thetaStart, data.thetaLength );

    	}

    }

    class TetrahedronGeometry extends PolyhedronGeometry {

    	constructor( radius = 1, detail = 0 ) {

    		const vertices = [
    			1, 1, 1, 	- 1, - 1, 1, 	- 1, 1, - 1, 	1, - 1, - 1
    		];

    		const indices = [
    			2, 1, 0, 	0, 3, 2,	1, 3, 0,	2, 3, 1
    		];

    		super( vertices, indices, radius, detail );

    		this.type = 'TetrahedronGeometry';

    		this.parameters = {
    			radius: radius,
    			detail: detail
    		};

    	}

    	static fromJSON( data ) {

    		return new TetrahedronGeometry( data.radius, data.detail );

    	}

    }

    class TorusGeometry extends BufferGeometry {

    	constructor( radius = 1, tube = 0.4, radialSegments = 8, tubularSegments = 6, arc = Math.PI * 2 ) {

    		super();

    		this.type = 'TorusGeometry';

    		this.parameters = {
    			radius: radius,
    			tube: tube,
    			radialSegments: radialSegments,
    			tubularSegments: tubularSegments,
    			arc: arc
    		};

    		radialSegments = Math.floor( radialSegments );
    		tubularSegments = Math.floor( tubularSegments );

    		// buffers

    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];

    		// helper variables

    		const center = new Vector3();
    		const vertex = new Vector3();
    		const normal = new Vector3();

    		// generate vertices, normals and uvs

    		for ( let j = 0; j <= radialSegments; j ++ ) {

    			for ( let i = 0; i <= tubularSegments; i ++ ) {

    				const u = i / tubularSegments * arc;
    				const v = j / radialSegments * Math.PI * 2;

    				// vertex

    				vertex.x = ( radius + tube * Math.cos( v ) ) * Math.cos( u );
    				vertex.y = ( radius + tube * Math.cos( v ) ) * Math.sin( u );
    				vertex.z = tube * Math.sin( v );

    				vertices.push( vertex.x, vertex.y, vertex.z );

    				// normal

    				center.x = radius * Math.cos( u );
    				center.y = radius * Math.sin( u );
    				normal.subVectors( vertex, center ).normalize();

    				normals.push( normal.x, normal.y, normal.z );

    				// uv

    				uvs.push( i / tubularSegments );
    				uvs.push( j / radialSegments );

    			}

    		}

    		// generate indices

    		for ( let j = 1; j <= radialSegments; j ++ ) {

    			for ( let i = 1; i <= tubularSegments; i ++ ) {

    				// indices

    				const a = ( tubularSegments + 1 ) * j + i - 1;
    				const b = ( tubularSegments + 1 ) * ( j - 1 ) + i - 1;
    				const c = ( tubularSegments + 1 ) * ( j - 1 ) + i;
    				const d = ( tubularSegments + 1 ) * j + i;

    				// faces

    				indices.push( a, b, d );
    				indices.push( b, c, d );

    			}

    		}

    		// build geometry

    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

    	}

    	static fromJSON( data ) {

    		return new TorusGeometry( data.radius, data.tube, data.radialSegments, data.tubularSegments, data.arc );

    	}

    }

    class TorusKnotGeometry extends BufferGeometry {

    	constructor( radius = 1, tube = 0.4, tubularSegments = 64, radialSegments = 8, p = 2, q = 3 ) {

    		super();

    		this.type = 'TorusKnotGeometry';

    		this.parameters = {
    			radius: radius,
    			tube: tube,
    			tubularSegments: tubularSegments,
    			radialSegments: radialSegments,
    			p: p,
    			q: q
    		};

    		tubularSegments = Math.floor( tubularSegments );
    		radialSegments = Math.floor( radialSegments );

    		// buffers

    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];

    		// helper variables

    		const vertex = new Vector3();
    		const normal = new Vector3();

    		const P1 = new Vector3();
    		const P2 = new Vector3();

    		const B = new Vector3();
    		const T = new Vector3();
    		const N = new Vector3();

    		// generate vertices, normals and uvs

    		for ( let i = 0; i <= tubularSegments; ++ i ) {

    			// the radian "u" is used to calculate the position on the torus curve of the current tubular segment

    			const u = i / tubularSegments * p * Math.PI * 2;

    			// now we calculate two points. P1 is our current position on the curve, P2 is a little farther ahead.
    			// these points are used to create a special "coordinate space", which is necessary to calculate the correct vertex positions

    			calculatePositionOnCurve( u, p, q, radius, P1 );
    			calculatePositionOnCurve( u + 0.01, p, q, radius, P2 );

    			// calculate orthonormal basis

    			T.subVectors( P2, P1 );
    			N.addVectors( P2, P1 );
    			B.crossVectors( T, N );
    			N.crossVectors( B, T );

    			// normalize B, N. T can be ignored, we don't use it

    			B.normalize();
    			N.normalize();

    			for ( let j = 0; j <= radialSegments; ++ j ) {

    				// now calculate the vertices. they are nothing more than an extrusion of the torus curve.
    				// because we extrude a shape in the xy-plane, there is no need to calculate a z-value.

    				const v = j / radialSegments * Math.PI * 2;
    				const cx = - tube * Math.cos( v );
    				const cy = tube * Math.sin( v );

    				// now calculate the final vertex position.
    				// first we orient the extrusion with our basis vectors, then we add it to the current position on the curve

    				vertex.x = P1.x + ( cx * N.x + cy * B.x );
    				vertex.y = P1.y + ( cx * N.y + cy * B.y );
    				vertex.z = P1.z + ( cx * N.z + cy * B.z );

    				vertices.push( vertex.x, vertex.y, vertex.z );

    				// normal (P1 is always the center/origin of the extrusion, thus we can use it to calculate the normal)

    				normal.subVectors( vertex, P1 ).normalize();

    				normals.push( normal.x, normal.y, normal.z );

    				// uv

    				uvs.push( i / tubularSegments );
    				uvs.push( j / radialSegments );

    			}

    		}

    		// generate indices

    		for ( let j = 1; j <= tubularSegments; j ++ ) {

    			for ( let i = 1; i <= radialSegments; i ++ ) {

    				// indices

    				const a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
    				const b = ( radialSegments + 1 ) * j + ( i - 1 );
    				const c = ( radialSegments + 1 ) * j + i;
    				const d = ( radialSegments + 1 ) * ( j - 1 ) + i;

    				// faces

    				indices.push( a, b, d );
    				indices.push( b, c, d );

    			}

    		}

    		// build geometry

    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

    		// this function calculates the current position on the torus curve

    		function calculatePositionOnCurve( u, p, q, radius, position ) {

    			const cu = Math.cos( u );
    			const su = Math.sin( u );
    			const quOverP = q / p * u;
    			const cs = Math.cos( quOverP );

    			position.x = radius * ( 2 + cs ) * 0.5 * cu;
    			position.y = radius * ( 2 + cs ) * su * 0.5;
    			position.z = radius * Math.sin( quOverP ) * 0.5;

    		}

    	}

    	static fromJSON( data ) {

    		return new TorusKnotGeometry( data.radius, data.tube, data.tubularSegments, data.radialSegments, data.p, data.q );

    	}

    }

    class TubeGeometry extends BufferGeometry {

    	constructor( path = new QuadraticBezierCurve3( new Vector3( - 1, - 1, 0 ), new Vector3( - 1, 1, 0 ), new Vector3( 1, 1, 0 ) ), tubularSegments = 64, radius = 1, radialSegments = 8, closed = false ) {

    		super();

    		this.type = 'TubeGeometry';

    		this.parameters = {
    			path: path,
    			tubularSegments: tubularSegments,
    			radius: radius,
    			radialSegments: radialSegments,
    			closed: closed
    		};

    		const frames = path.computeFrenetFrames( tubularSegments, closed );

    		// expose internals

    		this.tangents = frames.tangents;
    		this.normals = frames.normals;
    		this.binormals = frames.binormals;

    		// helper variables

    		const vertex = new Vector3();
    		const normal = new Vector3();
    		const uv = new Vector2();
    		let P = new Vector3();

    		// buffer

    		const vertices = [];
    		const normals = [];
    		const uvs = [];
    		const indices = [];

    		// create buffer data

    		generateBufferData();

    		// build geometry

    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

    		// functions

    		function generateBufferData() {

    			for ( let i = 0; i < tubularSegments; i ++ ) {

    				generateSegment( i );

    			}

    			// if the geometry is not closed, generate the last row of vertices and normals
    			// at the regular position on the given path
    			//
    			// if the geometry is closed, duplicate the first row of vertices and normals (uvs will differ)

    			generateSegment( ( closed === false ) ? tubularSegments : 0 );

    			// uvs are generated in a separate function.
    			// this makes it easy compute correct values for closed geometries

    			generateUVs();

    			// finally create faces

    			generateIndices();

    		}

    		function generateSegment( i ) {

    			// we use getPointAt to sample evenly distributed points from the given path

    			P = path.getPointAt( i / tubularSegments, P );

    			// retrieve corresponding normal and binormal

    			const N = frames.normals[ i ];
    			const B = frames.binormals[ i ];

    			// generate normals and vertices for the current segment

    			for ( let j = 0; j <= radialSegments; j ++ ) {

    				const v = j / radialSegments * Math.PI * 2;

    				const sin = Math.sin( v );
    				const cos = - Math.cos( v );

    				// normal

    				normal.x = ( cos * N.x + sin * B.x );
    				normal.y = ( cos * N.y + sin * B.y );
    				normal.z = ( cos * N.z + sin * B.z );
    				normal.normalize();

    				normals.push( normal.x, normal.y, normal.z );

    				// vertex

    				vertex.x = P.x + radius * normal.x;
    				vertex.y = P.y + radius * normal.y;
    				vertex.z = P.z + radius * normal.z;

    				vertices.push( vertex.x, vertex.y, vertex.z );

    			}

    		}

    		function generateIndices() {

    			for ( let j = 1; j <= tubularSegments; j ++ ) {

    				for ( let i = 1; i <= radialSegments; i ++ ) {

    					const a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
    					const b = ( radialSegments + 1 ) * j + ( i - 1 );
    					const c = ( radialSegments + 1 ) * j + i;
    					const d = ( radialSegments + 1 ) * ( j - 1 ) + i;

    					// faces

    					indices.push( a, b, d );
    					indices.push( b, c, d );

    				}

    			}

    		}

    		function generateUVs() {

    			for ( let i = 0; i <= tubularSegments; i ++ ) {

    				for ( let j = 0; j <= radialSegments; j ++ ) {

    					uv.x = i / tubularSegments;
    					uv.y = j / radialSegments;

    					uvs.push( uv.x, uv.y );

    				}

    			}

    		}

    	}

    	toJSON() {

    		const data = super.toJSON();

    		data.path = this.parameters.path.toJSON();

    		return data;

    	}

    	static fromJSON( data ) {

    		// This only works for built-in curves (e.g. CatmullRomCurve3).
    		// User defined curves or instances of CurvePath will not be deserialized.
    		return new TubeGeometry(
    			new Curves[ data.path.type ]().fromJSON( data.path ),
    			data.tubularSegments,
    			data.radius,
    			data.radialSegments,
    			data.closed
    		);

    	}

    }

    class WireframeGeometry extends BufferGeometry {

    	constructor( geometry = null ) {

    		super();

    		this.type = 'WireframeGeometry';

    		this.parameters = {
    			geometry: geometry
    		};

    		if ( geometry !== null ) {

    			// buffer

    			const vertices = [];
    			const edges = new Set();

    			// helper variables

    			const start = new Vector3();
    			const end = new Vector3();

    			if ( geometry.index !== null ) {

    				// indexed BufferGeometry

    				const position = geometry.attributes.position;
    				const indices = geometry.index;
    				let groups = geometry.groups;

    				if ( groups.length === 0 ) {

    					groups = [ { start: 0, count: indices.count, materialIndex: 0 } ];

    				}

    				// create a data structure that contains all edges without duplicates

    				for ( let o = 0, ol = groups.length; o < ol; ++ o ) {

    					const group = groups[ o ];

    					const groupStart = group.start;
    					const groupCount = group.count;

    					for ( let i = groupStart, l = ( groupStart + groupCount ); i < l; i += 3 ) {

    						for ( let j = 0; j < 3; j ++ ) {

    							const index1 = indices.getX( i + j );
    							const index2 = indices.getX( i + ( j + 1 ) % 3 );

    							start.fromBufferAttribute( position, index1 );
    							end.fromBufferAttribute( position, index2 );

    							if ( isUniqueEdge( start, end, edges ) === true ) {

    								vertices.push( start.x, start.y, start.z );
    								vertices.push( end.x, end.y, end.z );

    							}

    						}

    					}

    				}

    			} else {

    				// non-indexed BufferGeometry

    				const position = geometry.attributes.position;

    				for ( let i = 0, l = ( position.count / 3 ); i < l; i ++ ) {

    					for ( let j = 0; j < 3; j ++ ) {

    						// three edges per triangle, an edge is represented as (index1, index2)
    						// e.g. the first triangle has the following edges: (0,1),(1,2),(2,0)

    						const index1 = 3 * i + j;
    						const index2 = 3 * i + ( ( j + 1 ) % 3 );

    						start.fromBufferAttribute( position, index1 );
    						end.fromBufferAttribute( position, index2 );

    						if ( isUniqueEdge( start, end, edges ) === true ) {

    							vertices.push( start.x, start.y, start.z );
    							vertices.push( end.x, end.y, end.z );

    						}

    					}

    				}

    			}

    			// build geometry

    			this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );

    		}

    	}

    }

    function isUniqueEdge( start, end, edges ) {

    	const hash1 = `${start.x},${start.y},${start.z}-${end.x},${end.y},${end.z}`;
    	const hash2 = `${end.x},${end.y},${end.z}-${start.x},${start.y},${start.z}`; // coincident edge

    	if ( edges.has( hash1 ) === true || edges.has( hash2 ) === true ) {

    		return false;

    	} else {

    		edges.add( hash1 );
    		edges.add( hash2 );
    		return true;

    	}

    }

    var Geometries = /*#__PURE__*/Object.freeze({
    	__proto__: null,
    	BoxGeometry: BoxGeometry,
    	CapsuleGeometry: CapsuleGeometry,
    	CircleGeometry: CircleGeometry,
    	ConeGeometry: ConeGeometry,
    	CylinderGeometry: CylinderGeometry,
    	DodecahedronGeometry: DodecahedronGeometry,
    	EdgesGeometry: EdgesGeometry,
    	ExtrudeGeometry: ExtrudeGeometry,
    	IcosahedronGeometry: IcosahedronGeometry,
    	LatheGeometry: LatheGeometry,
    	OctahedronGeometry: OctahedronGeometry,
    	PlaneGeometry: PlaneGeometry,
    	PolyhedronGeometry: PolyhedronGeometry,
    	RingGeometry: RingGeometry,
    	ShapeGeometry: ShapeGeometry,
    	SphereGeometry: SphereGeometry,
    	TetrahedronGeometry: TetrahedronGeometry,
    	TorusGeometry: TorusGeometry,
    	TorusKnotGeometry: TorusKnotGeometry,
    	TubeGeometry: TubeGeometry,
    	WireframeGeometry: WireframeGeometry
    });

    class ShadowMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isShadowMaterial = true;

    		this.type = 'ShadowMaterial';

    		this.color = new Color( 0x000000 );
    		this.transparent = true;

    		this.fog = true;

    		this.setValues( parameters );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.color.copy( source.color );

    		this.fog = source.fog;

    		return this;

    	}

    }

    class RawShaderMaterial extends ShaderMaterial {

    	constructor( parameters ) {

    		super( parameters );

    		this.isRawShaderMaterial = true;

    		this.type = 'RawShaderMaterial';

    	}

    }

    class MeshStandardMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isMeshStandardMaterial = true;

    		this.defines = { 'STANDARD': '' };

    		this.type = 'MeshStandardMaterial';

    		this.color = new Color( 0xffffff ); // diffuse
    		this.roughness = 1.0;
    		this.metalness = 0.0;

    		this.map = null;

    		this.lightMap = null;
    		this.lightMapIntensity = 1.0;

    		this.aoMap = null;
    		this.aoMapIntensity = 1.0;

    		this.emissive = new Color( 0x000000 );
    		this.emissiveIntensity = 1.0;
    		this.emissiveMap = null;

    		this.bumpMap = null;
    		this.bumpScale = 1;

    		this.normalMap = null;
    		this.normalMapType = TangentSpaceNormalMap;
    		this.normalScale = new Vector2( 1, 1 );

    		this.displacementMap = null;
    		this.displacementScale = 1;
    		this.displacementBias = 0;

    		this.roughnessMap = null;

    		this.metalnessMap = null;

    		this.alphaMap = null;

    		this.envMap = null;
    		this.envMapIntensity = 1.0;

    		this.wireframe = false;
    		this.wireframeLinewidth = 1;
    		this.wireframeLinecap = 'round';
    		this.wireframeLinejoin = 'round';

    		this.flatShading = false;

    		this.fog = true;

    		this.setValues( parameters );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.defines = { 'STANDARD': '' };

    		this.color.copy( source.color );
    		this.roughness = source.roughness;
    		this.metalness = source.metalness;

    		this.map = source.map;

    		this.lightMap = source.lightMap;
    		this.lightMapIntensity = source.lightMapIntensity;

    		this.aoMap = source.aoMap;
    		this.aoMapIntensity = source.aoMapIntensity;

    		this.emissive.copy( source.emissive );
    		this.emissiveMap = source.emissiveMap;
    		this.emissiveIntensity = source.emissiveIntensity;

    		this.bumpMap = source.bumpMap;
    		this.bumpScale = source.bumpScale;

    		this.normalMap = source.normalMap;
    		this.normalMapType = source.normalMapType;
    		this.normalScale.copy( source.normalScale );

    		this.displacementMap = source.displacementMap;
    		this.displacementScale = source.displacementScale;
    		this.displacementBias = source.displacementBias;

    		this.roughnessMap = source.roughnessMap;

    		this.metalnessMap = source.metalnessMap;

    		this.alphaMap = source.alphaMap;

    		this.envMap = source.envMap;
    		this.envMapIntensity = source.envMapIntensity;

    		this.wireframe = source.wireframe;
    		this.wireframeLinewidth = source.wireframeLinewidth;
    		this.wireframeLinecap = source.wireframeLinecap;
    		this.wireframeLinejoin = source.wireframeLinejoin;

    		this.flatShading = source.flatShading;

    		this.fog = source.fog;

    		return this;

    	}

    }

    class MeshPhysicalMaterial extends MeshStandardMaterial {

    	constructor( parameters ) {

    		super();

    		this.isMeshPhysicalMaterial = true;

    		this.defines = {

    			'STANDARD': '',
    			'PHYSICAL': ''

    		};

    		this.type = 'MeshPhysicalMaterial';

    		this.clearcoatMap = null;
    		this.clearcoatRoughness = 0.0;
    		this.clearcoatRoughnessMap = null;
    		this.clearcoatNormalScale = new Vector2( 1, 1 );
    		this.clearcoatNormalMap = null;

    		this.ior = 1.5;

    		Object.defineProperty( this, 'reflectivity', {
    			get: function () {

    				return ( clamp( 2.5 * ( this.ior - 1 ) / ( this.ior + 1 ), 0, 1 ) );

    			},
    			set: function ( reflectivity ) {

    				this.ior = ( 1 + 0.4 * reflectivity ) / ( 1 - 0.4 * reflectivity );

    			}
    		} );

    		this.iridescenceMap = null;
    		this.iridescenceIOR = 1.3;
    		this.iridescenceThicknessRange = [ 100, 400 ];
    		this.iridescenceThicknessMap = null;

    		this.sheenColor = new Color( 0x000000 );
    		this.sheenColorMap = null;
    		this.sheenRoughness = 1.0;
    		this.sheenRoughnessMap = null;

    		this.transmissionMap = null;

    		this.thickness = 0;
    		this.thicknessMap = null;
    		this.attenuationDistance = Infinity;
    		this.attenuationColor = new Color( 1, 1, 1 );

    		this.specularIntensity = 1.0;
    		this.specularIntensityMap = null;
    		this.specularColor = new Color( 1, 1, 1 );
    		this.specularColorMap = null;

    		this._sheen = 0.0;
    		this._clearcoat = 0;
    		this._iridescence = 0;
    		this._transmission = 0;

    		this.setValues( parameters );

    	}

    	get sheen() {

    		return this._sheen;

    	}

    	set sheen( value ) {

    		if ( this._sheen > 0 !== value > 0 ) {

    			this.version ++;

    		}

    		this._sheen = value;

    	}

    	get clearcoat() {

    		return this._clearcoat;

    	}

    	set clearcoat( value ) {

    		if ( this._clearcoat > 0 !== value > 0 ) {

    			this.version ++;

    		}

    		this._clearcoat = value;

    	}

    	get iridescence() {

    		return this._iridescence;

    	}

    	set iridescence( value ) {

    		if ( this._iridescence > 0 !== value > 0 ) {

    			this.version ++;

    		}

    		this._iridescence = value;

    	}

    	get transmission() {

    		return this._transmission;

    	}

    	set transmission( value ) {

    		if ( this._transmission > 0 !== value > 0 ) {

    			this.version ++;

    		}

    		this._transmission = value;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.defines = {

    			'STANDARD': '',
    			'PHYSICAL': ''

    		};

    		this.clearcoat = source.clearcoat;
    		this.clearcoatMap = source.clearcoatMap;
    		this.clearcoatRoughness = source.clearcoatRoughness;
    		this.clearcoatRoughnessMap = source.clearcoatRoughnessMap;
    		this.clearcoatNormalMap = source.clearcoatNormalMap;
    		this.clearcoatNormalScale.copy( source.clearcoatNormalScale );

    		this.ior = source.ior;

    		this.iridescence = source.iridescence;
    		this.iridescenceMap = source.iridescenceMap;
    		this.iridescenceIOR = source.iridescenceIOR;
    		this.iridescenceThicknessRange = [ ...source.iridescenceThicknessRange ];
    		this.iridescenceThicknessMap = source.iridescenceThicknessMap;

    		this.sheen = source.sheen;
    		this.sheenColor.copy( source.sheenColor );
    		this.sheenColorMap = source.sheenColorMap;
    		this.sheenRoughness = source.sheenRoughness;
    		this.sheenRoughnessMap = source.sheenRoughnessMap;

    		this.transmission = source.transmission;
    		this.transmissionMap = source.transmissionMap;

    		this.thickness = source.thickness;
    		this.thicknessMap = source.thicknessMap;
    		this.attenuationDistance = source.attenuationDistance;
    		this.attenuationColor.copy( source.attenuationColor );

    		this.specularIntensity = source.specularIntensity;
    		this.specularIntensityMap = source.specularIntensityMap;
    		this.specularColor.copy( source.specularColor );
    		this.specularColorMap = source.specularColorMap;

    		return this;

    	}

    }

    class MeshPhongMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isMeshPhongMaterial = true;

    		this.type = 'MeshPhongMaterial';

    		this.color = new Color( 0xffffff ); // diffuse
    		this.specular = new Color( 0x111111 );
    		this.shininess = 30;

    		this.map = null;

    		this.lightMap = null;
    		this.lightMapIntensity = 1.0;

    		this.aoMap = null;
    		this.aoMapIntensity = 1.0;

    		this.emissive = new Color( 0x000000 );
    		this.emissiveIntensity = 1.0;
    		this.emissiveMap = null;

    		this.bumpMap = null;
    		this.bumpScale = 1;

    		this.normalMap = null;
    		this.normalMapType = TangentSpaceNormalMap;
    		this.normalScale = new Vector2( 1, 1 );

    		this.displacementMap = null;
    		this.displacementScale = 1;
    		this.displacementBias = 0;

    		this.specularMap = null;

    		this.alphaMap = null;

    		this.envMap = null;
    		this.combine = MultiplyOperation;
    		this.reflectivity = 1;
    		this.refractionRatio = 0.98;

    		this.wireframe = false;
    		this.wireframeLinewidth = 1;
    		this.wireframeLinecap = 'round';
    		this.wireframeLinejoin = 'round';

    		this.flatShading = false;

    		this.fog = true;

    		this.setValues( parameters );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.color.copy( source.color );
    		this.specular.copy( source.specular );
    		this.shininess = source.shininess;

    		this.map = source.map;

    		this.lightMap = source.lightMap;
    		this.lightMapIntensity = source.lightMapIntensity;

    		this.aoMap = source.aoMap;
    		this.aoMapIntensity = source.aoMapIntensity;

    		this.emissive.copy( source.emissive );
    		this.emissiveMap = source.emissiveMap;
    		this.emissiveIntensity = source.emissiveIntensity;

    		this.bumpMap = source.bumpMap;
    		this.bumpScale = source.bumpScale;

    		this.normalMap = source.normalMap;
    		this.normalMapType = source.normalMapType;
    		this.normalScale.copy( source.normalScale );

    		this.displacementMap = source.displacementMap;
    		this.displacementScale = source.displacementScale;
    		this.displacementBias = source.displacementBias;

    		this.specularMap = source.specularMap;

    		this.alphaMap = source.alphaMap;

    		this.envMap = source.envMap;
    		this.combine = source.combine;
    		this.reflectivity = source.reflectivity;
    		this.refractionRatio = source.refractionRatio;

    		this.wireframe = source.wireframe;
    		this.wireframeLinewidth = source.wireframeLinewidth;
    		this.wireframeLinecap = source.wireframeLinecap;
    		this.wireframeLinejoin = source.wireframeLinejoin;

    		this.flatShading = source.flatShading;

    		this.fog = source.fog;

    		return this;

    	}

    }

    class MeshToonMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isMeshToonMaterial = true;

    		this.defines = { 'TOON': '' };

    		this.type = 'MeshToonMaterial';

    		this.color = new Color( 0xffffff );

    		this.map = null;
    		this.gradientMap = null;

    		this.lightMap = null;
    		this.lightMapIntensity = 1.0;

    		this.aoMap = null;
    		this.aoMapIntensity = 1.0;

    		this.emissive = new Color( 0x000000 );
    		this.emissiveIntensity = 1.0;
    		this.emissiveMap = null;

    		this.bumpMap = null;
    		this.bumpScale = 1;

    		this.normalMap = null;
    		this.normalMapType = TangentSpaceNormalMap;
    		this.normalScale = new Vector2( 1, 1 );

    		this.displacementMap = null;
    		this.displacementScale = 1;
    		this.displacementBias = 0;

    		this.alphaMap = null;

    		this.wireframe = false;
    		this.wireframeLinewidth = 1;
    		this.wireframeLinecap = 'round';
    		this.wireframeLinejoin = 'round';

    		this.fog = true;

    		this.setValues( parameters );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.color.copy( source.color );

    		this.map = source.map;
    		this.gradientMap = source.gradientMap;

    		this.lightMap = source.lightMap;
    		this.lightMapIntensity = source.lightMapIntensity;

    		this.aoMap = source.aoMap;
    		this.aoMapIntensity = source.aoMapIntensity;

    		this.emissive.copy( source.emissive );
    		this.emissiveMap = source.emissiveMap;
    		this.emissiveIntensity = source.emissiveIntensity;

    		this.bumpMap = source.bumpMap;
    		this.bumpScale = source.bumpScale;

    		this.normalMap = source.normalMap;
    		this.normalMapType = source.normalMapType;
    		this.normalScale.copy( source.normalScale );

    		this.displacementMap = source.displacementMap;
    		this.displacementScale = source.displacementScale;
    		this.displacementBias = source.displacementBias;

    		this.alphaMap = source.alphaMap;

    		this.wireframe = source.wireframe;
    		this.wireframeLinewidth = source.wireframeLinewidth;
    		this.wireframeLinecap = source.wireframeLinecap;
    		this.wireframeLinejoin = source.wireframeLinejoin;

    		this.fog = source.fog;

    		return this;

    	}

    }

    class MeshNormalMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isMeshNormalMaterial = true;

    		this.type = 'MeshNormalMaterial';

    		this.bumpMap = null;
    		this.bumpScale = 1;

    		this.normalMap = null;
    		this.normalMapType = TangentSpaceNormalMap;
    		this.normalScale = new Vector2( 1, 1 );

    		this.displacementMap = null;
    		this.displacementScale = 1;
    		this.displacementBias = 0;

    		this.wireframe = false;
    		this.wireframeLinewidth = 1;

    		this.flatShading = false;

    		this.setValues( parameters );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.bumpMap = source.bumpMap;
    		this.bumpScale = source.bumpScale;

    		this.normalMap = source.normalMap;
    		this.normalMapType = source.normalMapType;
    		this.normalScale.copy( source.normalScale );

    		this.displacementMap = source.displacementMap;
    		this.displacementScale = source.displacementScale;
    		this.displacementBias = source.displacementBias;

    		this.wireframe = source.wireframe;
    		this.wireframeLinewidth = source.wireframeLinewidth;

    		this.flatShading = source.flatShading;

    		return this;

    	}

    }

    class MeshLambertMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isMeshLambertMaterial = true;

    		this.type = 'MeshLambertMaterial';

    		this.color = new Color( 0xffffff ); // diffuse

    		this.map = null;

    		this.lightMap = null;
    		this.lightMapIntensity = 1.0;

    		this.aoMap = null;
    		this.aoMapIntensity = 1.0;

    		this.emissive = new Color( 0x000000 );
    		this.emissiveIntensity = 1.0;
    		this.emissiveMap = null;

    		this.bumpMap = null;
    		this.bumpScale = 1;

    		this.normalMap = null;
    		this.normalMapType = TangentSpaceNormalMap;
    		this.normalScale = new Vector2( 1, 1 );

    		this.displacementMap = null;
    		this.displacementScale = 1;
    		this.displacementBias = 0;

    		this.specularMap = null;

    		this.alphaMap = null;

    		this.envMap = null;
    		this.combine = MultiplyOperation;
    		this.reflectivity = 1;
    		this.refractionRatio = 0.98;

    		this.wireframe = false;
    		this.wireframeLinewidth = 1;
    		this.wireframeLinecap = 'round';
    		this.wireframeLinejoin = 'round';

    		this.flatShading = false;

    		this.fog = true;

    		this.setValues( parameters );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.color.copy( source.color );

    		this.map = source.map;

    		this.lightMap = source.lightMap;
    		this.lightMapIntensity = source.lightMapIntensity;

    		this.aoMap = source.aoMap;
    		this.aoMapIntensity = source.aoMapIntensity;

    		this.emissive.copy( source.emissive );
    		this.emissiveMap = source.emissiveMap;
    		this.emissiveIntensity = source.emissiveIntensity;

    		this.bumpMap = source.bumpMap;
    		this.bumpScale = source.bumpScale;

    		this.normalMap = source.normalMap;
    		this.normalMapType = source.normalMapType;
    		this.normalScale.copy( source.normalScale );

    		this.displacementMap = source.displacementMap;
    		this.displacementScale = source.displacementScale;
    		this.displacementBias = source.displacementBias;

    		this.specularMap = source.specularMap;

    		this.alphaMap = source.alphaMap;

    		this.envMap = source.envMap;
    		this.combine = source.combine;
    		this.reflectivity = source.reflectivity;
    		this.refractionRatio = source.refractionRatio;

    		this.wireframe = source.wireframe;
    		this.wireframeLinewidth = source.wireframeLinewidth;
    		this.wireframeLinecap = source.wireframeLinecap;
    		this.wireframeLinejoin = source.wireframeLinejoin;

    		this.flatShading = source.flatShading;

    		this.fog = source.fog;

    		return this;

    	}

    }

    class MeshMatcapMaterial extends Material {

    	constructor( parameters ) {

    		super();

    		this.isMeshMatcapMaterial = true;

    		this.defines = { 'MATCAP': '' };

    		this.type = 'MeshMatcapMaterial';

    		this.color = new Color( 0xffffff ); // diffuse

    		this.matcap = null;

    		this.map = null;

    		this.bumpMap = null;
    		this.bumpScale = 1;

    		this.normalMap = null;
    		this.normalMapType = TangentSpaceNormalMap;
    		this.normalScale = new Vector2( 1, 1 );

    		this.displacementMap = null;
    		this.displacementScale = 1;
    		this.displacementBias = 0;

    		this.alphaMap = null;

    		this.flatShading = false;

    		this.fog = true;

    		this.setValues( parameters );

    	}


    	copy( source ) {

    		super.copy( source );

    		this.defines = { 'MATCAP': '' };

    		this.color.copy( source.color );

    		this.matcap = source.matcap;

    		this.map = source.map;

    		this.bumpMap = source.bumpMap;
    		this.bumpScale = source.bumpScale;

    		this.normalMap = source.normalMap;
    		this.normalMapType = source.normalMapType;
    		this.normalScale.copy( source.normalScale );

    		this.displacementMap = source.displacementMap;
    		this.displacementScale = source.displacementScale;
    		this.displacementBias = source.displacementBias;

    		this.alphaMap = source.alphaMap;

    		this.flatShading = source.flatShading;

    		this.fog = source.fog;

    		return this;

    	}

    }

    class LineDashedMaterial extends LineBasicMaterial {

    	constructor( parameters ) {

    		super();

    		this.isLineDashedMaterial = true;

    		this.type = 'LineDashedMaterial';

    		this.scale = 1;
    		this.dashSize = 3;
    		this.gapSize = 1;

    		this.setValues( parameters );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.scale = source.scale;
    		this.dashSize = source.dashSize;
    		this.gapSize = source.gapSize;

    		return this;

    	}

    }

    // same as Array.prototype.slice, but also works on typed arrays
    function arraySlice( array, from, to ) {

    	if ( isTypedArray( array ) ) {

    		// in ios9 array.subarray(from, undefined) will return empty array
    		// but array.subarray(from) or array.subarray(from, len) is correct
    		return new array.constructor( array.subarray( from, to !== undefined ? to : array.length ) );

    	}

    	return array.slice( from, to );

    }

    // converts an array to a specific type
    function convertArray( array, type, forceClone ) {

    	if ( ! array || // let 'undefined' and 'null' pass
    		! forceClone && array.constructor === type ) return array;

    	if ( typeof type.BYTES_PER_ELEMENT === 'number' ) {

    		return new type( array ); // create typed array

    	}

    	return Array.prototype.slice.call( array ); // create Array

    }

    function isTypedArray( object ) {

    	return ArrayBuffer.isView( object ) &&
    		! ( object instanceof DataView );

    }

    // returns an array by which times and values can be sorted
    function getKeyframeOrder( times ) {

    	function compareTime( i, j ) {

    		return times[ i ] - times[ j ];

    	}

    	const n = times.length;
    	const result = new Array( n );
    	for ( let i = 0; i !== n; ++ i ) result[ i ] = i;

    	result.sort( compareTime );

    	return result;

    }

    // uses the array previously returned by 'getKeyframeOrder' to sort data
    function sortedArray( values, stride, order ) {

    	const nValues = values.length;
    	const result = new values.constructor( nValues );

    	for ( let i = 0, dstOffset = 0; dstOffset !== nValues; ++ i ) {

    		const srcOffset = order[ i ] * stride;

    		for ( let j = 0; j !== stride; ++ j ) {

    			result[ dstOffset ++ ] = values[ srcOffset + j ];

    		}

    	}

    	return result;

    }

    // function for parsing AOS keyframe formats
    function flattenJSON( jsonKeys, times, values, valuePropertyName ) {

    	let i = 1, key = jsonKeys[ 0 ];

    	while ( key !== undefined && key[ valuePropertyName ] === undefined ) {

    		key = jsonKeys[ i ++ ];

    	}

    	if ( key === undefined ) return; // no data

    	let value = key[ valuePropertyName ];
    	if ( value === undefined ) return; // no data

    	if ( Array.isArray( value ) ) {

    		do {

    			value = key[ valuePropertyName ];

    			if ( value !== undefined ) {

    				times.push( key.time );
    				values.push.apply( values, value ); // push all elements

    			}

    			key = jsonKeys[ i ++ ];

    		} while ( key !== undefined );

    	} else if ( value.toArray !== undefined ) {

    		// ...assume THREE.Math-ish

    		do {

    			value = key[ valuePropertyName ];

    			if ( value !== undefined ) {

    				times.push( key.time );
    				value.toArray( values, values.length );

    			}

    			key = jsonKeys[ i ++ ];

    		} while ( key !== undefined );

    	} else {

    		// otherwise push as-is

    		do {

    			value = key[ valuePropertyName ];

    			if ( value !== undefined ) {

    				times.push( key.time );
    				values.push( value );

    			}

    			key = jsonKeys[ i ++ ];

    		} while ( key !== undefined );

    	}

    }

    function subclip( sourceClip, name, startFrame, endFrame, fps = 30 ) {

    	const clip = sourceClip.clone();

    	clip.name = name;

    	const tracks = [];

    	for ( let i = 0; i < clip.tracks.length; ++ i ) {

    		const track = clip.tracks[ i ];
    		const valueSize = track.getValueSize();

    		const times = [];
    		const values = [];

    		for ( let j = 0; j < track.times.length; ++ j ) {

    			const frame = track.times[ j ] * fps;

    			if ( frame < startFrame || frame >= endFrame ) continue;

    			times.push( track.times[ j ] );

    			for ( let k = 0; k < valueSize; ++ k ) {

    				values.push( track.values[ j * valueSize + k ] );

    			}

    		}

    		if ( times.length === 0 ) continue;

    		track.times = convertArray( times, track.times.constructor );
    		track.values = convertArray( values, track.values.constructor );

    		tracks.push( track );

    	}

    	clip.tracks = tracks;

    	// find minimum .times value across all tracks in the trimmed clip

    	let minStartTime = Infinity;

    	for ( let i = 0; i < clip.tracks.length; ++ i ) {

    		if ( minStartTime > clip.tracks[ i ].times[ 0 ] ) {

    			minStartTime = clip.tracks[ i ].times[ 0 ];

    		}

    	}

    	// shift all tracks such that clip begins at t=0

    	for ( let i = 0; i < clip.tracks.length; ++ i ) {

    		clip.tracks[ i ].shift( - 1 * minStartTime );

    	}

    	clip.resetDuration();

    	return clip;

    }

    function makeClipAdditive( targetClip, referenceFrame = 0, referenceClip = targetClip, fps = 30 ) {

    	if ( fps <= 0 ) fps = 30;

    	const numTracks = referenceClip.tracks.length;
    	const referenceTime = referenceFrame / fps;

    	// Make each track's values relative to the values at the reference frame
    	for ( let i = 0; i < numTracks; ++ i ) {

    		const referenceTrack = referenceClip.tracks[ i ];
    		const referenceTrackType = referenceTrack.ValueTypeName;

    		// Skip this track if it's non-numeric
    		if ( referenceTrackType === 'bool' || referenceTrackType === 'string' ) continue;

    		// Find the track in the target clip whose name and type matches the reference track
    		const targetTrack = targetClip.tracks.find( function ( track ) {

    			return track.name === referenceTrack.name
    				&& track.ValueTypeName === referenceTrackType;

    		} );

    		if ( targetTrack === undefined ) continue;

    		let referenceOffset = 0;
    		const referenceValueSize = referenceTrack.getValueSize();

    		if ( referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {

    			referenceOffset = referenceValueSize / 3;

    		}

    		let targetOffset = 0;
    		const targetValueSize = targetTrack.getValueSize();

    		if ( targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {

    			targetOffset = targetValueSize / 3;

    		}

    		const lastIndex = referenceTrack.times.length - 1;
    		let referenceValue;

    		// Find the value to subtract out of the track
    		if ( referenceTime <= referenceTrack.times[ 0 ] ) {

    			// Reference frame is earlier than the first keyframe, so just use the first keyframe
    			const startIndex = referenceOffset;
    			const endIndex = referenceValueSize - referenceOffset;
    			referenceValue = arraySlice( referenceTrack.values, startIndex, endIndex );

    		} else if ( referenceTime >= referenceTrack.times[ lastIndex ] ) {

    			// Reference frame is after the last keyframe, so just use the last keyframe
    			const startIndex = lastIndex * referenceValueSize + referenceOffset;
    			const endIndex = startIndex + referenceValueSize - referenceOffset;
    			referenceValue = arraySlice( referenceTrack.values, startIndex, endIndex );

    		} else {

    			// Interpolate to the reference value
    			const interpolant = referenceTrack.createInterpolant();
    			const startIndex = referenceOffset;
    			const endIndex = referenceValueSize - referenceOffset;
    			interpolant.evaluate( referenceTime );
    			referenceValue = arraySlice( interpolant.resultBuffer, startIndex, endIndex );

    		}

    		// Conjugate the quaternion
    		if ( referenceTrackType === 'quaternion' ) {

    			const referenceQuat = new Quaternion().fromArray( referenceValue ).normalize().conjugate();
    			referenceQuat.toArray( referenceValue );

    		}

    		// Subtract the reference value from all of the track values

    		const numTimes = targetTrack.times.length;
    		for ( let j = 0; j < numTimes; ++ j ) {

    			const valueStart = j * targetValueSize + targetOffset;

    			if ( referenceTrackType === 'quaternion' ) {

    				// Multiply the conjugate for quaternion track types
    				Quaternion.multiplyQuaternionsFlat(
    					targetTrack.values,
    					valueStart,
    					referenceValue,
    					0,
    					targetTrack.values,
    					valueStart
    				);

    			} else {

    				const valueEnd = targetValueSize - targetOffset * 2;

    				// Subtract each value for all other numeric track types
    				for ( let k = 0; k < valueEnd; ++ k ) {

    					targetTrack.values[ valueStart + k ] -= referenceValue[ k ];

    				}

    			}

    		}

    	}

    	targetClip.blendMode = AdditiveAnimationBlendMode;

    	return targetClip;

    }

    var AnimationUtils = /*#__PURE__*/Object.freeze({
    	__proto__: null,
    	arraySlice: arraySlice,
    	convertArray: convertArray,
    	isTypedArray: isTypedArray,
    	getKeyframeOrder: getKeyframeOrder,
    	sortedArray: sortedArray,
    	flattenJSON: flattenJSON,
    	subclip: subclip,
    	makeClipAdditive: makeClipAdditive
    });

    /**
     * Abstract base class of interpolants over parametric samples.
     *
     * The parameter domain is one dimensional, typically the time or a path
     * along a curve defined by the data.
     *
     * The sample values can have any dimensionality and derived classes may
     * apply special interpretations to the data.
     *
     * This class provides the interval seek in a Template Method, deferring
     * the actual interpolation to derived classes.
     *
     * Time complexity is O(1) for linear access crossing at most two points
     * and O(log N) for random access, where N is the number of positions.
     *
     * References:
     *
     * 		http://www.oodesign.com/template-method-pattern.html
     *
     */

    class Interpolant {

    	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

    		this.parameterPositions = parameterPositions;
    		this._cachedIndex = 0;

    		this.resultBuffer = resultBuffer !== undefined ?
    			resultBuffer : new sampleValues.constructor( sampleSize );
    		this.sampleValues = sampleValues;
    		this.valueSize = sampleSize;

    		this.settings = null;
    		this.DefaultSettings_ = {};

    	}

    	evaluate( t ) {

    		const pp = this.parameterPositions;
    		let i1 = this._cachedIndex,
    			t1 = pp[ i1 ],
    			t0 = pp[ i1 - 1 ];

    		validate_interval: {

    			seek: {

    				let right;

    				linear_scan: {

    					//- See http://jsperf.com/comparison-to-undefined/3
    					//- slower code:
    					//-
    					//- 				if ( t >= t1 || t1 === undefined ) {
    					forward_scan: if ( ! ( t < t1 ) ) {

    						for ( let giveUpAt = i1 + 2; ; ) {

    							if ( t1 === undefined ) {

    								if ( t < t0 ) break forward_scan;

    								// after end

    								i1 = pp.length;
    								this._cachedIndex = i1;
    								return this.copySampleValue_( i1 - 1 );

    							}

    							if ( i1 === giveUpAt ) break; // this loop

    							t0 = t1;
    							t1 = pp[ ++ i1 ];

    							if ( t < t1 ) {

    								// we have arrived at the sought interval
    								break seek;

    							}

    						}

    						// prepare binary search on the right side of the index
    						right = pp.length;
    						break linear_scan;

    					}

    					//- slower code:
    					//-					if ( t < t0 || t0 === undefined ) {
    					if ( ! ( t >= t0 ) ) {

    						// looping?

    						const t1global = pp[ 1 ];

    						if ( t < t1global ) {

    							i1 = 2; // + 1, using the scan for the details
    							t0 = t1global;

    						}

    						// linear reverse scan

    						for ( let giveUpAt = i1 - 2; ; ) {

    							if ( t0 === undefined ) {

    								// before start

    								this._cachedIndex = 0;
    								return this.copySampleValue_( 0 );

    							}

    							if ( i1 === giveUpAt ) break; // this loop

    							t1 = t0;
    							t0 = pp[ -- i1 - 1 ];

    							if ( t >= t0 ) {

    								// we have arrived at the sought interval
    								break seek;

    							}

    						}

    						// prepare binary search on the left side of the index
    						right = i1;
    						i1 = 0;
    						break linear_scan;

    					}

    					// the interval is valid

    					break validate_interval;

    				} // linear scan

    				// binary search

    				while ( i1 < right ) {

    					const mid = ( i1 + right ) >>> 1;

    					if ( t < pp[ mid ] ) {

    						right = mid;

    					} else {

    						i1 = mid + 1;

    					}

    				}

    				t1 = pp[ i1 ];
    				t0 = pp[ i1 - 1 ];

    				// check boundary cases, again

    				if ( t0 === undefined ) {

    					this._cachedIndex = 0;
    					return this.copySampleValue_( 0 );

    				}

    				if ( t1 === undefined ) {

    					i1 = pp.length;
    					this._cachedIndex = i1;
    					return this.copySampleValue_( i1 - 1 );

    				}

    			} // seek

    			this._cachedIndex = i1;

    			this.intervalChanged_( i1, t0, t1 );

    		} // validate_interval

    		return this.interpolate_( i1, t0, t, t1 );

    	}

    	getSettings_() {

    		return this.settings || this.DefaultSettings_;

    	}

    	copySampleValue_( index ) {

    		// copies a sample value to the result buffer

    		const result = this.resultBuffer,
    			values = this.sampleValues,
    			stride = this.valueSize,
    			offset = index * stride;

    		for ( let i = 0; i !== stride; ++ i ) {

    			result[ i ] = values[ offset + i ];

    		}

    		return result;

    	}

    	// Template methods for derived classes:

    	interpolate_( /* i1, t0, t, t1 */ ) {

    		throw new Error( 'call to abstract method' );
    		// implementations shall return this.resultBuffer

    	}

    	intervalChanged_( /* i1, t0, t1 */ ) {

    		// empty

    	}

    }

    /**
     * Fast and simple cubic spline interpolant.
     *
     * It was derived from a Hermitian construction setting the first derivative
     * at each sample position to the linear slope between neighboring positions
     * over their parameter interval.
     */

    class CubicInterpolant extends Interpolant {

    	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

    		super( parameterPositions, sampleValues, sampleSize, resultBuffer );

    		this._weightPrev = - 0;
    		this._offsetPrev = - 0;
    		this._weightNext = - 0;
    		this._offsetNext = - 0;

    		this.DefaultSettings_ = {

    			endingStart: ZeroCurvatureEnding,
    			endingEnd: ZeroCurvatureEnding

    		};

    	}

    	intervalChanged_( i1, t0, t1 ) {

    		const pp = this.parameterPositions;
    		let iPrev = i1 - 2,
    			iNext = i1 + 1,

    			tPrev = pp[ iPrev ],
    			tNext = pp[ iNext ];

    		if ( tPrev === undefined ) {

    			switch ( this.getSettings_().endingStart ) {

    				case ZeroSlopeEnding:

    					// f'(t0) = 0
    					iPrev = i1;
    					tPrev = 2 * t0 - t1;

    					break;

    				case WrapAroundEnding:

    					// use the other end of the curve
    					iPrev = pp.length - 2;
    					tPrev = t0 + pp[ iPrev ] - pp[ iPrev + 1 ];

    					break;

    				default: // ZeroCurvatureEnding

    					// f''(t0) = 0 a.k.a. Natural Spline
    					iPrev = i1;
    					tPrev = t1;

    			}

    		}

    		if ( tNext === undefined ) {

    			switch ( this.getSettings_().endingEnd ) {

    				case ZeroSlopeEnding:

    					// f'(tN) = 0
    					iNext = i1;
    					tNext = 2 * t1 - t0;

    					break;

    				case WrapAroundEnding:

    					// use the other end of the curve
    					iNext = 1;
    					tNext = t1 + pp[ 1 ] - pp[ 0 ];

    					break;

    				default: // ZeroCurvatureEnding

    					// f''(tN) = 0, a.k.a. Natural Spline
    					iNext = i1 - 1;
    					tNext = t0;

    			}

    		}

    		const halfDt = ( t1 - t0 ) * 0.5,
    			stride = this.valueSize;

    		this._weightPrev = halfDt / ( t0 - tPrev );
    		this._weightNext = halfDt / ( tNext - t1 );
    		this._offsetPrev = iPrev * stride;
    		this._offsetNext = iNext * stride;

    	}

    	interpolate_( i1, t0, t, t1 ) {

    		const result = this.resultBuffer,
    			values = this.sampleValues,
    			stride = this.valueSize,

    			o1 = i1 * stride,		o0 = o1 - stride,
    			oP = this._offsetPrev, 	oN = this._offsetNext,
    			wP = this._weightPrev,	wN = this._weightNext,

    			p = ( t - t0 ) / ( t1 - t0 ),
    			pp = p * p,
    			ppp = pp * p;

    		// evaluate polynomials

    		const sP = - wP * ppp + 2 * wP * pp - wP * p;
    		const s0 = ( 1 + wP ) * ppp + ( - 1.5 - 2 * wP ) * pp + ( - 0.5 + wP ) * p + 1;
    		const s1 = ( - 1 - wN ) * ppp + ( 1.5 + wN ) * pp + 0.5 * p;
    		const sN = wN * ppp - wN * pp;

    		// combine data linearly

    		for ( let i = 0; i !== stride; ++ i ) {

    			result[ i ] =
    					sP * values[ oP + i ] +
    					s0 * values[ o0 + i ] +
    					s1 * values[ o1 + i ] +
    					sN * values[ oN + i ];

    		}

    		return result;

    	}

    }

    class LinearInterpolant extends Interpolant {

    	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

    		super( parameterPositions, sampleValues, sampleSize, resultBuffer );

    	}

    	interpolate_( i1, t0, t, t1 ) {

    		const result = this.resultBuffer,
    			values = this.sampleValues,
    			stride = this.valueSize,

    			offset1 = i1 * stride,
    			offset0 = offset1 - stride,

    			weight1 = ( t - t0 ) / ( t1 - t0 ),
    			weight0 = 1 - weight1;

    		for ( let i = 0; i !== stride; ++ i ) {

    			result[ i ] =
    					values[ offset0 + i ] * weight0 +
    					values[ offset1 + i ] * weight1;

    		}

    		return result;

    	}

    }

    /**
     *
     * Interpolant that evaluates to the sample value at the position preceding
     * the parameter.
     */

    class DiscreteInterpolant extends Interpolant {

    	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

    		super( parameterPositions, sampleValues, sampleSize, resultBuffer );

    	}

    	interpolate_( i1 /*, t0, t, t1 */ ) {

    		return this.copySampleValue_( i1 - 1 );

    	}

    }

    class KeyframeTrack {

    	constructor( name, times, values, interpolation ) {

    		if ( name === undefined ) throw new Error( 'THREE.KeyframeTrack: track name is undefined' );
    		if ( times === undefined || times.length === 0 ) throw new Error( 'THREE.KeyframeTrack: no keyframes in track named ' + name );

    		this.name = name;

    		this.times = convertArray( times, this.TimeBufferType );
    		this.values = convertArray( values, this.ValueBufferType );

    		this.setInterpolation( interpolation || this.DefaultInterpolation );

    	}

    	// Serialization (in static context, because of constructor invocation
    	// and automatic invocation of .toJSON):

    	static toJSON( track ) {

    		const trackType = track.constructor;

    		let json;

    		// derived classes can define a static toJSON method
    		if ( trackType.toJSON !== this.toJSON ) {

    			json = trackType.toJSON( track );

    		} else {

    			// by default, we assume the data can be serialized as-is
    			json = {

    				'name': track.name,
    				'times': convertArray( track.times, Array ),
    				'values': convertArray( track.values, Array )

    			};

    			const interpolation = track.getInterpolation();

    			if ( interpolation !== track.DefaultInterpolation ) {

    				json.interpolation = interpolation;

    			}

    		}

    		json.type = track.ValueTypeName; // mandatory

    		return json;

    	}

    	InterpolantFactoryMethodDiscrete( result ) {

    		return new DiscreteInterpolant( this.times, this.values, this.getValueSize(), result );

    	}

    	InterpolantFactoryMethodLinear( result ) {

    		return new LinearInterpolant( this.times, this.values, this.getValueSize(), result );

    	}

    	InterpolantFactoryMethodSmooth( result ) {

    		return new CubicInterpolant( this.times, this.values, this.getValueSize(), result );

    	}

    	setInterpolation( interpolation ) {

    		let factoryMethod;

    		switch ( interpolation ) {

    			case InterpolateDiscrete:

    				factoryMethod = this.InterpolantFactoryMethodDiscrete;

    				break;

    			case InterpolateLinear:

    				factoryMethod = this.InterpolantFactoryMethodLinear;

    				break;

    			case InterpolateSmooth:

    				factoryMethod = this.InterpolantFactoryMethodSmooth;

    				break;

    		}

    		if ( factoryMethod === undefined ) {

    			const message = 'unsupported interpolation for ' +
    				this.ValueTypeName + ' keyframe track named ' + this.name;

    			if ( this.createInterpolant === undefined ) {

    				// fall back to default, unless the default itself is messed up
    				if ( interpolation !== this.DefaultInterpolation ) {

    					this.setInterpolation( this.DefaultInterpolation );

    				} else {

    					throw new Error( message ); // fatal, in this case

    				}

    			}

    			console.warn( 'THREE.KeyframeTrack:', message );
    			return this;

    		}

    		this.createInterpolant = factoryMethod;

    		return this;

    	}

    	getInterpolation() {

    		switch ( this.createInterpolant ) {

    			case this.InterpolantFactoryMethodDiscrete:

    				return InterpolateDiscrete;

    			case this.InterpolantFactoryMethodLinear:

    				return InterpolateLinear;

    			case this.InterpolantFactoryMethodSmooth:

    				return InterpolateSmooth;

    		}

    	}

    	getValueSize() {

    		return this.values.length / this.times.length;

    	}

    	// move all keyframes either forwards or backwards in time
    	shift( timeOffset ) {

    		if ( timeOffset !== 0.0 ) {

    			const times = this.times;

    			for ( let i = 0, n = times.length; i !== n; ++ i ) {

    				times[ i ] += timeOffset;

    			}

    		}

    		return this;

    	}

    	// scale all keyframe times by a factor (useful for frame <-> seconds conversions)
    	scale( timeScale ) {

    		if ( timeScale !== 1.0 ) {

    			const times = this.times;

    			for ( let i = 0, n = times.length; i !== n; ++ i ) {

    				times[ i ] *= timeScale;

    			}

    		}

    		return this;

    	}

    	// removes keyframes before and after animation without changing any values within the range [startTime, endTime].
    	// IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values
    	trim( startTime, endTime ) {

    		const times = this.times,
    			nKeys = times.length;

    		let from = 0,
    			to = nKeys - 1;

    		while ( from !== nKeys && times[ from ] < startTime ) {

    			++ from;

    		}

    		while ( to !== - 1 && times[ to ] > endTime ) {

    			-- to;

    		}

    		++ to; // inclusive -> exclusive bound

    		if ( from !== 0 || to !== nKeys ) {

    			// empty tracks are forbidden, so keep at least one keyframe
    			if ( from >= to ) {

    				to = Math.max( to, 1 );
    				from = to - 1;

    			}

    			const stride = this.getValueSize();
    			this.times = arraySlice( times, from, to );
    			this.values = arraySlice( this.values, from * stride, to * stride );

    		}

    		return this;

    	}

    	// ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable
    	validate() {

    		let valid = true;

    		const valueSize = this.getValueSize();
    		if ( valueSize - Math.floor( valueSize ) !== 0 ) {

    			console.error( 'THREE.KeyframeTrack: Invalid value size in track.', this );
    			valid = false;

    		}

    		const times = this.times,
    			values = this.values,

    			nKeys = times.length;

    		if ( nKeys === 0 ) {

    			console.error( 'THREE.KeyframeTrack: Track is empty.', this );
    			valid = false;

    		}

    		let prevTime = null;

    		for ( let i = 0; i !== nKeys; i ++ ) {

    			const currTime = times[ i ];

    			if ( typeof currTime === 'number' && isNaN( currTime ) ) {

    				console.error( 'THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime );
    				valid = false;
    				break;

    			}

    			if ( prevTime !== null && prevTime > currTime ) {

    				console.error( 'THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime );
    				valid = false;
    				break;

    			}

    			prevTime = currTime;

    		}

    		if ( values !== undefined ) {

    			if ( isTypedArray( values ) ) {

    				for ( let i = 0, n = values.length; i !== n; ++ i ) {

    					const value = values[ i ];

    					if ( isNaN( value ) ) {

    						console.error( 'THREE.KeyframeTrack: Value is not a valid number.', this, i, value );
    						valid = false;
    						break;

    					}

    				}

    			}

    		}

    		return valid;

    	}

    	// removes equivalent sequential keys as common in morph target sequences
    	// (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)
    	optimize() {

    		// times or values may be shared with other tracks, so overwriting is unsafe
    		const times = arraySlice( this.times ),
    			values = arraySlice( this.values ),
    			stride = this.getValueSize(),

    			smoothInterpolation = this.getInterpolation() === InterpolateSmooth,

    			lastIndex = times.length - 1;

    		let writeIndex = 1;

    		for ( let i = 1; i < lastIndex; ++ i ) {

    			let keep = false;

    			const time = times[ i ];
    			const timeNext = times[ i + 1 ];

    			// remove adjacent keyframes scheduled at the same time

    			if ( time !== timeNext && ( i !== 1 || time !== times[ 0 ] ) ) {

    				if ( ! smoothInterpolation ) {

    					// remove unnecessary keyframes same as their neighbors

    					const offset = i * stride,
    						offsetP = offset - stride,
    						offsetN = offset + stride;

    					for ( let j = 0; j !== stride; ++ j ) {

    						const value = values[ offset + j ];

    						if ( value !== values[ offsetP + j ] ||
    							value !== values[ offsetN + j ] ) {

    							keep = true;
    							break;

    						}

    					}

    				} else {

    					keep = true;

    				}

    			}

    			// in-place compaction

    			if ( keep ) {

    				if ( i !== writeIndex ) {

    					times[ writeIndex ] = times[ i ];

    					const readOffset = i * stride,
    						writeOffset = writeIndex * stride;

    					for ( let j = 0; j !== stride; ++ j ) {

    						values[ writeOffset + j ] = values[ readOffset + j ];

    					}

    				}

    				++ writeIndex;

    			}

    		}

    		// flush last keyframe (compaction looks ahead)

    		if ( lastIndex > 0 ) {

    			times[ writeIndex ] = times[ lastIndex ];

    			for ( let readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++ j ) {

    				values[ writeOffset + j ] = values[ readOffset + j ];

    			}

    			++ writeIndex;

    		}

    		if ( writeIndex !== times.length ) {

    			this.times = arraySlice( times, 0, writeIndex );
    			this.values = arraySlice( values, 0, writeIndex * stride );

    		} else {

    			this.times = times;
    			this.values = values;

    		}

    		return this;

    	}

    	clone() {

    		const times = arraySlice( this.times, 0 );
    		const values = arraySlice( this.values, 0 );

    		const TypedKeyframeTrack = this.constructor;
    		const track = new TypedKeyframeTrack( this.name, times, values );

    		// Interpolant argument to constructor is not saved, so copy the factory method directly.
    		track.createInterpolant = this.createInterpolant;

    		return track;

    	}

    }

    KeyframeTrack.prototype.TimeBufferType = Float32Array;
    KeyframeTrack.prototype.ValueBufferType = Float32Array;
    KeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;

    /**
     * A Track of Boolean keyframe values.
     */
    class BooleanKeyframeTrack extends KeyframeTrack {}

    BooleanKeyframeTrack.prototype.ValueTypeName = 'bool';
    BooleanKeyframeTrack.prototype.ValueBufferType = Array;
    BooleanKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
    BooleanKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
    BooleanKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;

    /**
     * A Track of keyframe values that represent color.
     */
    class ColorKeyframeTrack extends KeyframeTrack {}

    ColorKeyframeTrack.prototype.ValueTypeName = 'color';

    /**
     * A Track of numeric keyframe values.
     */
    class NumberKeyframeTrack extends KeyframeTrack {}

    NumberKeyframeTrack.prototype.ValueTypeName = 'number';

    /**
     * Spherical linear unit quaternion interpolant.
     */

    class QuaternionLinearInterpolant extends Interpolant {

    	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

    		super( parameterPositions, sampleValues, sampleSize, resultBuffer );

    	}

    	interpolate_( i1, t0, t, t1 ) {

    		const result = this.resultBuffer,
    			values = this.sampleValues,
    			stride = this.valueSize,

    			alpha = ( t - t0 ) / ( t1 - t0 );

    		let offset = i1 * stride;

    		for ( let end = offset + stride; offset !== end; offset += 4 ) {

    			Quaternion.slerpFlat( result, 0, values, offset - stride, values, offset, alpha );

    		}

    		return result;

    	}

    }

    /**
     * A Track of quaternion keyframe values.
     */
    class QuaternionKeyframeTrack extends KeyframeTrack {

    	InterpolantFactoryMethodLinear( result ) {

    		return new QuaternionLinearInterpolant( this.times, this.values, this.getValueSize(), result );

    	}

    }

    QuaternionKeyframeTrack.prototype.ValueTypeName = 'quaternion';
    // ValueBufferType is inherited
    QuaternionKeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;
    QuaternionKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;

    /**
     * A Track that interpolates Strings
     */
    class StringKeyframeTrack extends KeyframeTrack {}

    StringKeyframeTrack.prototype.ValueTypeName = 'string';
    StringKeyframeTrack.prototype.ValueBufferType = Array;
    StringKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
    StringKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
    StringKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;

    /**
     * A Track of vectored keyframe values.
     */
    class VectorKeyframeTrack extends KeyframeTrack {}

    VectorKeyframeTrack.prototype.ValueTypeName = 'vector';

    class AnimationClip {

    	constructor( name, duration = - 1, tracks, blendMode = NormalAnimationBlendMode ) {

    		this.name = name;
    		this.tracks = tracks;
    		this.duration = duration;
    		this.blendMode = blendMode;

    		this.uuid = generateUUID();

    		// this means it should figure out its duration by scanning the tracks
    		if ( this.duration < 0 ) {

    			this.resetDuration();

    		}

    	}


    	static parse( json ) {

    		const tracks = [],
    			jsonTracks = json.tracks,
    			frameTime = 1.0 / ( json.fps || 1.0 );

    		for ( let i = 0, n = jsonTracks.length; i !== n; ++ i ) {

    			tracks.push( parseKeyframeTrack( jsonTracks[ i ] ).scale( frameTime ) );

    		}

    		const clip = new this( json.name, json.duration, tracks, json.blendMode );
    		clip.uuid = json.uuid;

    		return clip;

    	}

    	static toJSON( clip ) {

    		const tracks = [],
    			clipTracks = clip.tracks;

    		const json = {

    			'name': clip.name,
    			'duration': clip.duration,
    			'tracks': tracks,
    			'uuid': clip.uuid,
    			'blendMode': clip.blendMode

    		};

    		for ( let i = 0, n = clipTracks.length; i !== n; ++ i ) {

    			tracks.push( KeyframeTrack.toJSON( clipTracks[ i ] ) );

    		}

    		return json;

    	}

    	static CreateFromMorphTargetSequence( name, morphTargetSequence, fps, noLoop ) {

    		const numMorphTargets = morphTargetSequence.length;
    		const tracks = [];

    		for ( let i = 0; i < numMorphTargets; i ++ ) {

    			let times = [];
    			let values = [];

    			times.push(
    				( i + numMorphTargets - 1 ) % numMorphTargets,
    				i,
    				( i + 1 ) % numMorphTargets );

    			values.push( 0, 1, 0 );

    			const order = getKeyframeOrder( times );
    			times = sortedArray( times, 1, order );
    			values = sortedArray( values, 1, order );

    			// if there is a key at the first frame, duplicate it as the
    			// last frame as well for perfect loop.
    			if ( ! noLoop && times[ 0 ] === 0 ) {

    				times.push( numMorphTargets );
    				values.push( values[ 0 ] );

    			}

    			tracks.push(
    				new NumberKeyframeTrack(
    					'.morphTargetInfluences[' + morphTargetSequence[ i ].name + ']',
    					times, values
    				).scale( 1.0 / fps ) );

    		}

    		return new this( name, - 1, tracks );

    	}

    	static findByName( objectOrClipArray, name ) {

    		let clipArray = objectOrClipArray;

    		if ( ! Array.isArray( objectOrClipArray ) ) {

    			const o = objectOrClipArray;
    			clipArray = o.geometry && o.geometry.animations || o.animations;

    		}

    		for ( let i = 0; i < clipArray.length; i ++ ) {

    			if ( clipArray[ i ].name === name ) {

    				return clipArray[ i ];

    			}

    		}

    		return null;

    	}

    	static CreateClipsFromMorphTargetSequences( morphTargets, fps, noLoop ) {

    		const animationToMorphTargets = {};

    		// tested with https://regex101.com/ on trick sequences
    		// such flamingo_flyA_003, flamingo_run1_003, crdeath0059
    		const pattern = /^([\w-]*?)([\d]+)$/;

    		// sort morph target names into animation groups based
    		// patterns like Walk_001, Walk_002, Run_001, Run_002
    		for ( let i = 0, il = morphTargets.length; i < il; i ++ ) {

    			const morphTarget = morphTargets[ i ];
    			const parts = morphTarget.name.match( pattern );

    			if ( parts && parts.length > 1 ) {

    				const name = parts[ 1 ];

    				let animationMorphTargets = animationToMorphTargets[ name ];

    				if ( ! animationMorphTargets ) {

    					animationToMorphTargets[ name ] = animationMorphTargets = [];

    				}

    				animationMorphTargets.push( morphTarget );

    			}

    		}

    		const clips = [];

    		for ( const name in animationToMorphTargets ) {

    			clips.push( this.CreateFromMorphTargetSequence( name, animationToMorphTargets[ name ], fps, noLoop ) );

    		}

    		return clips;

    	}

    	// parse the animation.hierarchy format
    	static parseAnimation( animation, bones ) {

    		if ( ! animation ) {

    			console.error( 'THREE.AnimationClip: No animation in JSONLoader data.' );
    			return null;

    		}

    		const addNonemptyTrack = function ( trackType, trackName, animationKeys, propertyName, destTracks ) {

    			// only return track if there are actually keys.
    			if ( animationKeys.length !== 0 ) {

    				const times = [];
    				const values = [];

    				flattenJSON( animationKeys, times, values, propertyName );

    				// empty keys are filtered out, so check again
    				if ( times.length !== 0 ) {

    					destTracks.push( new trackType( trackName, times, values ) );

    				}

    			}

    		};

    		const tracks = [];

    		const clipName = animation.name || 'default';
    		const fps = animation.fps || 30;
    		const blendMode = animation.blendMode;

    		// automatic length determination in AnimationClip.
    		let duration = animation.length || - 1;

    		const hierarchyTracks = animation.hierarchy || [];

    		for ( let h = 0; h < hierarchyTracks.length; h ++ ) {

    			const animationKeys = hierarchyTracks[ h ].keys;

    			// skip empty tracks
    			if ( ! animationKeys || animationKeys.length === 0 ) continue;

    			// process morph targets
    			if ( animationKeys[ 0 ].morphTargets ) {

    				// figure out all morph targets used in this track
    				const morphTargetNames = {};

    				let k;

    				for ( k = 0; k < animationKeys.length; k ++ ) {

    					if ( animationKeys[ k ].morphTargets ) {

    						for ( let m = 0; m < animationKeys[ k ].morphTargets.length; m ++ ) {

    							morphTargetNames[ animationKeys[ k ].morphTargets[ m ] ] = - 1;

    						}

    					}

    				}

    				// create a track for each morph target with all zero
    				// morphTargetInfluences except for the keys in which
    				// the morphTarget is named.
    				for ( const morphTargetName in morphTargetNames ) {

    					const times = [];
    					const values = [];

    					for ( let m = 0; m !== animationKeys[ k ].morphTargets.length; ++ m ) {

    						const animationKey = animationKeys[ k ];

    						times.push( animationKey.time );
    						values.push( ( animationKey.morphTarget === morphTargetName ) ? 1 : 0 );

    					}

    					tracks.push( new NumberKeyframeTrack( '.morphTargetInfluence[' + morphTargetName + ']', times, values ) );

    				}

    				duration = morphTargetNames.length * fps;

    			} else {

    				// ...assume skeletal animation

    				const boneName = '.bones[' + bones[ h ].name + ']';

    				addNonemptyTrack(
    					VectorKeyframeTrack, boneName + '.position',
    					animationKeys, 'pos', tracks );

    				addNonemptyTrack(
    					QuaternionKeyframeTrack, boneName + '.quaternion',
    					animationKeys, 'rot', tracks );

    				addNonemptyTrack(
    					VectorKeyframeTrack, boneName + '.scale',
    					animationKeys, 'scl', tracks );

    			}

    		}

    		if ( tracks.length === 0 ) {

    			return null;

    		}

    		const clip = new this( clipName, duration, tracks, blendMode );

    		return clip;

    	}

    	resetDuration() {

    		const tracks = this.tracks;
    		let duration = 0;

    		for ( let i = 0, n = tracks.length; i !== n; ++ i ) {

    			const track = this.tracks[ i ];

    			duration = Math.max( duration, track.times[ track.times.length - 1 ] );

    		}

    		this.duration = duration;

    		return this;

    	}

    	trim() {

    		for ( let i = 0; i < this.tracks.length; i ++ ) {

    			this.tracks[ i ].trim( 0, this.duration );

    		}

    		return this;

    	}

    	validate() {

    		let valid = true;

    		for ( let i = 0; i < this.tracks.length; i ++ ) {

    			valid = valid && this.tracks[ i ].validate();

    		}

    		return valid;

    	}

    	optimize() {

    		for ( let i = 0; i < this.tracks.length; i ++ ) {

    			this.tracks[ i ].optimize();

    		}

    		return this;

    	}

    	clone() {

    		const tracks = [];

    		for ( let i = 0; i < this.tracks.length; i ++ ) {

    			tracks.push( this.tracks[ i ].clone() );

    		}

    		return new this.constructor( this.name, this.duration, tracks, this.blendMode );

    	}

    	toJSON() {

    		return this.constructor.toJSON( this );

    	}

    }

    function getTrackTypeForValueTypeName( typeName ) {

    	switch ( typeName.toLowerCase() ) {

    		case 'scalar':
    		case 'double':
    		case 'float':
    		case 'number':
    		case 'integer':

    			return NumberKeyframeTrack;

    		case 'vector':
    		case 'vector2':
    		case 'vector3':
    		case 'vector4':

    			return VectorKeyframeTrack;

    		case 'color':

    			return ColorKeyframeTrack;

    		case 'quaternion':

    			return QuaternionKeyframeTrack;

    		case 'bool':
    		case 'boolean':

    			return BooleanKeyframeTrack;

    		case 'string':

    			return StringKeyframeTrack;

    	}

    	throw new Error( 'THREE.KeyframeTrack: Unsupported typeName: ' + typeName );

    }

    function parseKeyframeTrack( json ) {

    	if ( json.type === undefined ) {

    		throw new Error( 'THREE.KeyframeTrack: track type undefined, can not parse' );

    	}

    	const trackType = getTrackTypeForValueTypeName( json.type );

    	if ( json.times === undefined ) {

    		const times = [], values = [];

    		flattenJSON( json.keys, times, values, 'value' );

    		json.times = times;
    		json.values = values;

    	}

    	// derived classes can define a static parse method
    	if ( trackType.parse !== undefined ) {

    		return trackType.parse( json );

    	} else {

    		// by default, we assume a constructor compatible with the base
    		return new trackType( json.name, json.times, json.values, json.interpolation );

    	}

    }

    const Cache = {

    	enabled: false,

    	files: {},

    	add: function ( key, file ) {

    		if ( this.enabled === false ) return;

    		// console.log( 'THREE.Cache', 'Adding key:', key );

    		this.files[ key ] = file;

    	},

    	get: function ( key ) {

    		if ( this.enabled === false ) return;

    		// console.log( 'THREE.Cache', 'Checking key:', key );

    		return this.files[ key ];

    	},

    	remove: function ( key ) {

    		delete this.files[ key ];

    	},

    	clear: function () {

    		this.files = {};

    	}

    };

    class LoadingManager {

    	constructor( onLoad, onProgress, onError ) {

    		const scope = this;

    		let isLoading = false;
    		let itemsLoaded = 0;
    		let itemsTotal = 0;
    		let urlModifier = undefined;
    		const handlers = [];

    		// Refer to #5689 for the reason why we don't set .onStart
    		// in the constructor

    		this.onStart = undefined;
    		this.onLoad = onLoad;
    		this.onProgress = onProgress;
    		this.onError = onError;

    		this.itemStart = function ( url ) {

    			itemsTotal ++;

    			if ( isLoading === false ) {

    				if ( scope.onStart !== undefined ) {

    					scope.onStart( url, itemsLoaded, itemsTotal );

    				}

    			}

    			isLoading = true;

    		};

    		this.itemEnd = function ( url ) {

    			itemsLoaded ++;

    			if ( scope.onProgress !== undefined ) {

    				scope.onProgress( url, itemsLoaded, itemsTotal );

    			}

    			if ( itemsLoaded === itemsTotal ) {

    				isLoading = false;

    				if ( scope.onLoad !== undefined ) {

    					scope.onLoad();

    				}

    			}

    		};

    		this.itemError = function ( url ) {

    			if ( scope.onError !== undefined ) {

    				scope.onError( url );

    			}

    		};

    		this.resolveURL = function ( url ) {

    			if ( urlModifier ) {

    				return urlModifier( url );

    			}

    			return url;

    		};

    		this.setURLModifier = function ( transform ) {

    			urlModifier = transform;

    			return this;

    		};

    		this.addHandler = function ( regex, loader ) {

    			handlers.push( regex, loader );

    			return this;

    		};

    		this.removeHandler = function ( regex ) {

    			const index = handlers.indexOf( regex );

    			if ( index !== - 1 ) {

    				handlers.splice( index, 2 );

    			}

    			return this;

    		};

    		this.getHandler = function ( file ) {

    			for ( let i = 0, l = handlers.length; i < l; i += 2 ) {

    				const regex = handlers[ i ];
    				const loader = handlers[ i + 1 ];

    				if ( regex.global ) regex.lastIndex = 0; // see #17920

    				if ( regex.test( file ) ) {

    					return loader;

    				}

    			}

    			return null;

    		};

    	}

    }

    const DefaultLoadingManager = /*@__PURE__*/ new LoadingManager();

    class Loader {

    	constructor( manager ) {

    		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;

    		this.crossOrigin = 'anonymous';
    		this.withCredentials = false;
    		this.path = '';
    		this.resourcePath = '';
    		this.requestHeader = {};

    	}

    	load( /* url, onLoad, onProgress, onError */ ) {}

    	loadAsync( url, onProgress ) {

    		const scope = this;

    		return new Promise( function ( resolve, reject ) {

    			scope.load( url, resolve, onProgress, reject );

    		} );

    	}

    	parse( /* data */ ) {}

    	setCrossOrigin( crossOrigin ) {

    		this.crossOrigin = crossOrigin;
    		return this;

    	}

    	setWithCredentials( value ) {

    		this.withCredentials = value;
    		return this;

    	}

    	setPath( path ) {

    		this.path = path;
    		return this;

    	}

    	setResourcePath( resourcePath ) {

    		this.resourcePath = resourcePath;
    		return this;

    	}

    	setRequestHeader( requestHeader ) {

    		this.requestHeader = requestHeader;
    		return this;

    	}

    }

    const loading = {};

    class HttpError extends Error {

    	constructor( message, response ) {

    		super( message );
    		this.response = response;

    	}

    }

    class FileLoader extends Loader {

    	constructor( manager ) {

    		super( manager );

    	}

    	load( url, onLoad, onProgress, onError ) {

    		if ( url === undefined ) url = '';

    		if ( this.path !== undefined ) url = this.path + url;

    		url = this.manager.resolveURL( url );

    		const cached = Cache.get( url );

    		if ( cached !== undefined ) {

    			this.manager.itemStart( url );

    			setTimeout( () => {

    				if ( onLoad ) onLoad( cached );

    				this.manager.itemEnd( url );

    			}, 0 );

    			return cached;

    		}

    		// Check if request is duplicate

    		if ( loading[ url ] !== undefined ) {

    			loading[ url ].push( {

    				onLoad: onLoad,
    				onProgress: onProgress,
    				onError: onError

    			} );

    			return;

    		}

    		// Initialise array for duplicate requests
    		loading[ url ] = [];

    		loading[ url ].push( {
    			onLoad: onLoad,
    			onProgress: onProgress,
    			onError: onError,
    		} );

    		// create request
    		const req = new Request( url, {
    			headers: new Headers( this.requestHeader ),
    			credentials: this.withCredentials ? 'include' : 'same-origin',
    			// An abort controller could be added within a future PR
    		} );

    		// record states ( avoid data race )
    		const mimeType = this.mimeType;
    		const responseType = this.responseType;

    		// start the fetch
    		fetch( req )
    			.then( response => {

    				if ( response.status === 200 || response.status === 0 ) {

    					// Some browsers return HTTP Status 0 when using non-http protocol
    					// e.g. 'file://' or 'data://'. Handle as success.

    					if ( response.status === 0 ) {

    						console.warn( 'THREE.FileLoader: HTTP Status 0 received.' );

    					}

    					// Workaround: Checking if response.body === undefined for Alipay browser #23548

    					if ( typeof ReadableStream === 'undefined' || response.body === undefined || response.body.getReader === undefined ) {

    						return response;

    					}

    					const callbacks = loading[ url ];
    					const reader = response.body.getReader();
    					const contentLength = response.headers.get( 'Content-Length' );
    					const total = contentLength ? parseInt( contentLength ) : 0;
    					const lengthComputable = total !== 0;
    					let loaded = 0;

    					// periodically read data into the new stream tracking while download progress
    					const stream = new ReadableStream( {
    						start( controller ) {

    							readData();

    							function readData() {

    								reader.read().then( ( { done, value } ) => {

    									if ( done ) {

    										controller.close();

    									} else {

    										loaded += value.byteLength;

    										const event = new ProgressEvent( 'progress', { lengthComputable, loaded, total } );
    										for ( let i = 0, il = callbacks.length; i < il; i ++ ) {

    											const callback = callbacks[ i ];
    											if ( callback.onProgress ) callback.onProgress( event );

    										}

    										controller.enqueue( value );
    										readData();

    									}

    								} );

    							}

    						}

    					} );

    					return new Response( stream );

    				} else {

    					throw new HttpError( `fetch for "${response.url}" responded with ${response.status}: ${response.statusText}`, response );

    				}

    			} )
    			.then( response => {

    				switch ( responseType ) {

    					case 'arraybuffer':

    						return response.arrayBuffer();

    					case 'blob':

    						return response.blob();

    					case 'document':

    						return response.text()
    							.then( text => {

    								const parser = new DOMParser();
    								return parser.parseFromString( text, mimeType );

    							} );

    					case 'json':

    						return response.json();

    					default:

    						if ( mimeType === undefined ) {

    							return response.text();

    						} else {

    							// sniff encoding
    							const re = /charset="?([^;"\s]*)"?/i;
    							const exec = re.exec( mimeType );
    							const label = exec && exec[ 1 ] ? exec[ 1 ].toLowerCase() : undefined;
    							const decoder = new TextDecoder( label );
    							return response.arrayBuffer().then( ab => decoder.decode( ab ) );

    						}

    				}

    			} )
    			.then( data => {

    				// Add to cache only on HTTP success, so that we do not cache
    				// error response bodies as proper responses to requests.
    				Cache.add( url, data );

    				const callbacks = loading[ url ];
    				delete loading[ url ];

    				for ( let i = 0, il = callbacks.length; i < il; i ++ ) {

    					const callback = callbacks[ i ];
    					if ( callback.onLoad ) callback.onLoad( data );

    				}

    			} )
    			.catch( err => {

    				// Abort errors and other errors are handled the same

    				const callbacks = loading[ url ];

    				if ( callbacks === undefined ) {

    					// When onLoad was called and url was deleted in `loading`
    					this.manager.itemError( url );
    					throw err;

    				}

    				delete loading[ url ];

    				for ( let i = 0, il = callbacks.length; i < il; i ++ ) {

    					const callback = callbacks[ i ];
    					if ( callback.onError ) callback.onError( err );

    				}

    				this.manager.itemError( url );

    			} )
    			.finally( () => {

    				this.manager.itemEnd( url );

    			} );

    		this.manager.itemStart( url );

    	}

    	setResponseType( value ) {

    		this.responseType = value;
    		return this;

    	}

    	setMimeType( value ) {

    		this.mimeType = value;
    		return this;

    	}

    }

    class AnimationLoader extends Loader {

    	constructor( manager ) {

    		super( manager );

    	}

    	load( url, onLoad, onProgress, onError ) {

    		const scope = this;

    		const loader = new FileLoader( this.manager );
    		loader.setPath( this.path );
    		loader.setRequestHeader( this.requestHeader );
    		loader.setWithCredentials( this.withCredentials );
    		loader.load( url, function ( text ) {

    			try {

    				onLoad( scope.parse( JSON.parse( text ) ) );

    			} catch ( e ) {

    				if ( onError ) {

    					onError( e );

    				} else {

    					console.error( e );

    				}

    				scope.manager.itemError( url );

    			}

    		}, onProgress, onError );

    	}

    	parse( json ) {

    		const animations = [];

    		for ( let i = 0; i < json.length; i ++ ) {

    			const clip = AnimationClip.parse( json[ i ] );

    			animations.push( clip );

    		}

    		return animations;

    	}

    }

    /**
     * Abstract Base class to block based textures loader (dds, pvr, ...)
     *
     * Sub classes have to implement the parse() method which will be used in load().
     */

    class CompressedTextureLoader extends Loader {

    	constructor( manager ) {

    		super( manager );

    	}

    	load( url, onLoad, onProgress, onError ) {

    		const scope = this;

    		const images = [];

    		const texture = new CompressedTexture();

    		const loader = new FileLoader( this.manager );
    		loader.setPath( this.path );
    		loader.setResponseType( 'arraybuffer' );
    		loader.setRequestHeader( this.requestHeader );
    		loader.setWithCredentials( scope.withCredentials );

    		let loaded = 0;

    		function loadTexture( i ) {

    			loader.load( url[ i ], function ( buffer ) {

    				const texDatas = scope.parse( buffer, true );

    				images[ i ] = {
    					width: texDatas.width,
    					height: texDatas.height,
    					format: texDatas.format,
    					mipmaps: texDatas.mipmaps
    				};

    				loaded += 1;

    				if ( loaded === 6 ) {

    					if ( texDatas.mipmapCount === 1 ) texture.minFilter = LinearFilter;

    					texture.image = images;
    					texture.format = texDatas.format;
    					texture.needsUpdate = true;

    					if ( onLoad ) onLoad( texture );

    				}

    			}, onProgress, onError );

    		}

    		if ( Array.isArray( url ) ) {

    			for ( let i = 0, il = url.length; i < il; ++ i ) {

    				loadTexture( i );

    			}

    		} else {

    			// compressed cubemap texture stored in a single DDS file

    			loader.load( url, function ( buffer ) {

    				const texDatas = scope.parse( buffer, true );

    				if ( texDatas.isCubemap ) {

    					const faces = texDatas.mipmaps.length / texDatas.mipmapCount;

    					for ( let f = 0; f < faces; f ++ ) {

    						images[ f ] = { mipmaps: [] };

    						for ( let i = 0; i < texDatas.mipmapCount; i ++ ) {

    							images[ f ].mipmaps.push( texDatas.mipmaps[ f * texDatas.mipmapCount + i ] );
    							images[ f ].format = texDatas.format;
    							images[ f ].width = texDatas.width;
    							images[ f ].height = texDatas.height;

    						}

    					}

    					texture.image = images;

    				} else {

    					texture.image.width = texDatas.width;
    					texture.image.height = texDatas.height;
    					texture.mipmaps = texDatas.mipmaps;

    				}

    				if ( texDatas.mipmapCount === 1 ) {

    					texture.minFilter = LinearFilter;

    				}

    				texture.format = texDatas.format;
    				texture.needsUpdate = true;

    				if ( onLoad ) onLoad( texture );

    			}, onProgress, onError );

    		}

    		return texture;

    	}

    }

    class ImageLoader extends Loader {

    	constructor( manager ) {

    		super( manager );

    	}

    	load( url, onLoad, onProgress, onError ) {

    		if ( this.path !== undefined ) url = this.path + url;

    		url = this.manager.resolveURL( url );

    		const scope = this;

    		const cached = Cache.get( url );

    		if ( cached !== undefined ) {

    			scope.manager.itemStart( url );

    			setTimeout( function () {

    				if ( onLoad ) onLoad( cached );

    				scope.manager.itemEnd( url );

    			}, 0 );

    			return cached;

    		}

    		const image = createElementNS( 'img' );

    		function onImageLoad() {

    			removeEventListeners();

    			Cache.add( url, this );

    			if ( onLoad ) onLoad( this );

    			scope.manager.itemEnd( url );

    		}

    		function onImageError( event ) {

    			removeEventListeners();

    			if ( onError ) onError( event );

    			scope.manager.itemError( url );
    			scope.manager.itemEnd( url );

    		}

    		function removeEventListeners() {

    			image.removeEventListener( 'load', onImageLoad, false );
    			image.removeEventListener( 'error', onImageError, false );

    		}

    		image.addEventListener( 'load', onImageLoad, false );
    		image.addEventListener( 'error', onImageError, false );

    		if ( url.slice( 0, 5 ) !== 'data:' ) {

    			if ( this.crossOrigin !== undefined ) image.crossOrigin = this.crossOrigin;

    		}

    		scope.manager.itemStart( url );

    		image.src = url;

    		return image;

    	}

    }

    class CubeTextureLoader extends Loader {

    	constructor( manager ) {

    		super( manager );

    	}

    	load( urls, onLoad, onProgress, onError ) {

    		const texture = new CubeTexture();

    		const loader = new ImageLoader( this.manager );
    		loader.setCrossOrigin( this.crossOrigin );
    		loader.setPath( this.path );

    		let loaded = 0;

    		function loadTexture( i ) {

    			loader.load( urls[ i ], function ( image ) {

    				texture.images[ i ] = image;

    				loaded ++;

    				if ( loaded === 6 ) {

    					texture.needsUpdate = true;

    					if ( onLoad ) onLoad( texture );

    				}

    			}, undefined, onError );

    		}

    		for ( let i = 0; i < urls.length; ++ i ) {

    			loadTexture( i );

    		}

    		return texture;

    	}

    }

    /**
     * Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)
     *
     * Sub classes have to implement the parse() method which will be used in load().
     */

    class DataTextureLoader extends Loader {

    	constructor( manager ) {

    		super( manager );

    	}

    	load( url, onLoad, onProgress, onError ) {

    		const scope = this;

    		const texture = new DataTexture();

    		const loader = new FileLoader( this.manager );
    		loader.setResponseType( 'arraybuffer' );
    		loader.setRequestHeader( this.requestHeader );
    		loader.setPath( this.path );
    		loader.setWithCredentials( scope.withCredentials );
    		loader.load( url, function ( buffer ) {

    			const texData = scope.parse( buffer );

    			if ( ! texData ) return;

    			if ( texData.image !== undefined ) {

    				texture.image = texData.image;

    			} else if ( texData.data !== undefined ) {

    				texture.image.width = texData.width;
    				texture.image.height = texData.height;
    				texture.image.data = texData.data;

    			}

    			texture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;
    			texture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;

    			texture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;
    			texture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;

    			texture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;

    			if ( texData.encoding !== undefined ) {

    				texture.encoding = texData.encoding;

    			}

    			if ( texData.flipY !== undefined ) {

    				texture.flipY = texData.flipY;

    			}

    			if ( texData.format !== undefined ) {

    				texture.format = texData.format;

    			}

    			if ( texData.type !== undefined ) {

    				texture.type = texData.type;

    			}

    			if ( texData.mipmaps !== undefined ) {

    				texture.mipmaps = texData.mipmaps;
    				texture.minFilter = LinearMipmapLinearFilter; // presumably...

    			}

    			if ( texData.mipmapCount === 1 ) {

    				texture.minFilter = LinearFilter;

    			}

    			if ( texData.generateMipmaps !== undefined ) {

    				texture.generateMipmaps = texData.generateMipmaps;

    			}

    			texture.needsUpdate = true;

    			if ( onLoad ) onLoad( texture, texData );

    		}, onProgress, onError );


    		return texture;

    	}

    }

    class TextureLoader extends Loader {

    	constructor( manager ) {

    		super( manager );

    	}

    	load( url, onLoad, onProgress, onError ) {

    		const texture = new Texture();

    		const loader = new ImageLoader( this.manager );
    		loader.setCrossOrigin( this.crossOrigin );
    		loader.setPath( this.path );

    		loader.load( url, function ( image ) {

    			texture.image = image;
    			texture.needsUpdate = true;

    			if ( onLoad !== undefined ) {

    				onLoad( texture );

    			}

    		}, onProgress, onError );

    		return texture;

    	}

    }

    class Light extends Object3D {

    	constructor( color, intensity = 1 ) {

    		super();

    		this.isLight = true;

    		this.type = 'Light';

    		this.color = new Color( color );
    		this.intensity = intensity;

    	}

    	dispose() {

    		// Empty here in base class; some subclasses override.

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		this.color.copy( source.color );
    		this.intensity = source.intensity;

    		return this;

    	}

    	toJSON( meta ) {

    		const data = super.toJSON( meta );

    		data.object.color = this.color.getHex();
    		data.object.intensity = this.intensity;

    		if ( this.groundColor !== undefined ) data.object.groundColor = this.groundColor.getHex();

    		if ( this.distance !== undefined ) data.object.distance = this.distance;
    		if ( this.angle !== undefined ) data.object.angle = this.angle;
    		if ( this.decay !== undefined ) data.object.decay = this.decay;
    		if ( this.penumbra !== undefined ) data.object.penumbra = this.penumbra;

    		if ( this.shadow !== undefined ) data.object.shadow = this.shadow.toJSON();

    		return data;

    	}

    }

    class HemisphereLight extends Light {

    	constructor( skyColor, groundColor, intensity ) {

    		super( skyColor, intensity );

    		this.isHemisphereLight = true;

    		this.type = 'HemisphereLight';

    		this.position.copy( Object3D.DefaultUp );
    		this.updateMatrix();

    		this.groundColor = new Color( groundColor );

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		this.groundColor.copy( source.groundColor );

    		return this;

    	}

    }

    const _projScreenMatrix$1 = /*@__PURE__*/ new Matrix4();
    const _lightPositionWorld$1 = /*@__PURE__*/ new Vector3();
    const _lookTarget$1 = /*@__PURE__*/ new Vector3();

    class LightShadow {

    	constructor( camera ) {

    		this.camera = camera;

    		this.bias = 0;
    		this.normalBias = 0;
    		this.radius = 1;
    		this.blurSamples = 8;

    		this.mapSize = new Vector2( 512, 512 );

    		this.map = null;
    		this.mapPass = null;
    		this.matrix = new Matrix4();

    		this.autoUpdate = true;
    		this.needsUpdate = false;

    		this._frustum = new Frustum();
    		this._frameExtents = new Vector2( 1, 1 );

    		this._viewportCount = 1;

    		this._viewports = [

    			new Vector4( 0, 0, 1, 1 )

    		];

    	}

    	getViewportCount() {

    		return this._viewportCount;

    	}

    	getFrustum() {

    		return this._frustum;

    	}

    	updateMatrices( light ) {

    		const shadowCamera = this.camera;
    		const shadowMatrix = this.matrix;

    		_lightPositionWorld$1.setFromMatrixPosition( light.matrixWorld );
    		shadowCamera.position.copy( _lightPositionWorld$1 );

    		_lookTarget$1.setFromMatrixPosition( light.target.matrixWorld );
    		shadowCamera.lookAt( _lookTarget$1 );
    		shadowCamera.updateMatrixWorld();

    		_projScreenMatrix$1.multiplyMatrices( shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse );
    		this._frustum.setFromProjectionMatrix( _projScreenMatrix$1 );

    		shadowMatrix.set(
    			0.5, 0.0, 0.0, 0.5,
    			0.0, 0.5, 0.0, 0.5,
    			0.0, 0.0, 0.5, 0.5,
    			0.0, 0.0, 0.0, 1.0
    		);

    		shadowMatrix.multiply( _projScreenMatrix$1 );

    	}

    	getViewport( viewportIndex ) {

    		return this._viewports[ viewportIndex ];

    	}

    	getFrameExtents() {

    		return this._frameExtents;

    	}

    	dispose() {

    		if ( this.map ) {

    			this.map.dispose();

    		}

    		if ( this.mapPass ) {

    			this.mapPass.dispose();

    		}

    	}

    	copy( source ) {

    		this.camera = source.camera.clone();

    		this.bias = source.bias;
    		this.radius = source.radius;

    		this.mapSize.copy( source.mapSize );

    		return this;

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    	toJSON() {

    		const object = {};

    		if ( this.bias !== 0 ) object.bias = this.bias;
    		if ( this.normalBias !== 0 ) object.normalBias = this.normalBias;
    		if ( this.radius !== 1 ) object.radius = this.radius;
    		if ( this.mapSize.x !== 512 || this.mapSize.y !== 512 ) object.mapSize = this.mapSize.toArray();

    		object.camera = this.camera.toJSON( false ).object;
    		delete object.camera.matrix;

    		return object;

    	}

    }

    class SpotLightShadow extends LightShadow {

    	constructor() {

    		super( new PerspectiveCamera( 50, 1, 0.5, 500 ) );

    		this.isSpotLightShadow = true;

    		this.focus = 1;

    	}

    	updateMatrices( light ) {

    		const camera = this.camera;

    		const fov = RAD2DEG * 2 * light.angle * this.focus;
    		const aspect = this.mapSize.width / this.mapSize.height;
    		const far = light.distance || camera.far;

    		if ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {

    			camera.fov = fov;
    			camera.aspect = aspect;
    			camera.far = far;
    			camera.updateProjectionMatrix();

    		}

    		super.updateMatrices( light );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.focus = source.focus;

    		return this;

    	}

    }

    class SpotLight extends Light {

    	constructor( color, intensity, distance = 0, angle = Math.PI / 3, penumbra = 0, decay = 1 ) {

    		super( color, intensity );

    		this.isSpotLight = true;

    		this.type = 'SpotLight';

    		this.position.copy( Object3D.DefaultUp );
    		this.updateMatrix();

    		this.target = new Object3D();

    		this.distance = distance;
    		this.angle = angle;
    		this.penumbra = penumbra;
    		this.decay = decay; // for physically correct lights, should be 2.

    		this.map = null;

    		this.shadow = new SpotLightShadow();

    	}

    	get power() {

    		// compute the light's luminous power (in lumens) from its intensity (in candela)
    		// by convention for a spotlight, luminous power (lm) = π * luminous intensity (cd)
    		return this.intensity * Math.PI;

    	}

    	set power( power ) {

    		// set the light's intensity (in candela) from the desired luminous power (in lumens)
    		this.intensity = power / Math.PI;

    	}

    	dispose() {

    		this.shadow.dispose();

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		this.distance = source.distance;
    		this.angle = source.angle;
    		this.penumbra = source.penumbra;
    		this.decay = source.decay;

    		this.target = source.target.clone();

    		this.shadow = source.shadow.clone();

    		return this;

    	}

    }

    const _projScreenMatrix = /*@__PURE__*/ new Matrix4();
    const _lightPositionWorld = /*@__PURE__*/ new Vector3();
    const _lookTarget = /*@__PURE__*/ new Vector3();

    class PointLightShadow extends LightShadow {

    	constructor() {

    		super( new PerspectiveCamera( 90, 1, 0.5, 500 ) );

    		this.isPointLightShadow = true;

    		this._frameExtents = new Vector2( 4, 2 );

    		this._viewportCount = 6;

    		this._viewports = [
    			// These viewports map a cube-map onto a 2D texture with the
    			// following orientation:
    			//
    			//  xzXZ
    			//   y Y
    			//
    			// X - Positive x direction
    			// x - Negative x direction
    			// Y - Positive y direction
    			// y - Negative y direction
    			// Z - Positive z direction
    			// z - Negative z direction

    			// positive X
    			new Vector4( 2, 1, 1, 1 ),
    			// negative X
    			new Vector4( 0, 1, 1, 1 ),
    			// positive Z
    			new Vector4( 3, 1, 1, 1 ),
    			// negative Z
    			new Vector4( 1, 1, 1, 1 ),
    			// positive Y
    			new Vector4( 3, 0, 1, 1 ),
    			// negative Y
    			new Vector4( 1, 0, 1, 1 )
    		];

    		this._cubeDirections = [
    			new Vector3( 1, 0, 0 ), new Vector3( - 1, 0, 0 ), new Vector3( 0, 0, 1 ),
    			new Vector3( 0, 0, - 1 ), new Vector3( 0, 1, 0 ), new Vector3( 0, - 1, 0 )
    		];

    		this._cubeUps = [
    			new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ),
    			new Vector3( 0, 1, 0 ), new Vector3( 0, 0, 1 ),	new Vector3( 0, 0, - 1 )
    		];

    	}

    	updateMatrices( light, viewportIndex = 0 ) {

    		const camera = this.camera;
    		const shadowMatrix = this.matrix;

    		const far = light.distance || camera.far;

    		if ( far !== camera.far ) {

    			camera.far = far;
    			camera.updateProjectionMatrix();

    		}

    		_lightPositionWorld.setFromMatrixPosition( light.matrixWorld );
    		camera.position.copy( _lightPositionWorld );

    		_lookTarget.copy( camera.position );
    		_lookTarget.add( this._cubeDirections[ viewportIndex ] );
    		camera.up.copy( this._cubeUps[ viewportIndex ] );
    		camera.lookAt( _lookTarget );
    		camera.updateMatrixWorld();

    		shadowMatrix.makeTranslation( - _lightPositionWorld.x, - _lightPositionWorld.y, - _lightPositionWorld.z );

    		_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
    		this._frustum.setFromProjectionMatrix( _projScreenMatrix );

    	}

    }

    class PointLight extends Light {

    	constructor( color, intensity, distance = 0, decay = 1 ) {

    		super( color, intensity );

    		this.isPointLight = true;

    		this.type = 'PointLight';

    		this.distance = distance;
    		this.decay = decay; // for physically correct lights, should be 2.

    		this.shadow = new PointLightShadow();

    	}

    	get power() {

    		// compute the light's luminous power (in lumens) from its intensity (in candela)
    		// for an isotropic light source, luminous power (lm) = 4 π luminous intensity (cd)
    		return this.intensity * 4 * Math.PI;

    	}

    	set power( power ) {

    		// set the light's intensity (in candela) from the desired luminous power (in lumens)
    		this.intensity = power / ( 4 * Math.PI );

    	}

    	dispose() {

    		this.shadow.dispose();

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		this.distance = source.distance;
    		this.decay = source.decay;

    		this.shadow = source.shadow.clone();

    		return this;

    	}

    }

    class DirectionalLightShadow extends LightShadow {

    	constructor() {

    		super( new OrthographicCamera( - 5, 5, 5, - 5, 0.5, 500 ) );

    		this.isDirectionalLightShadow = true;

    	}

    }

    class DirectionalLight extends Light {

    	constructor( color, intensity ) {

    		super( color, intensity );

    		this.isDirectionalLight = true;

    		this.type = 'DirectionalLight';

    		this.position.copy( Object3D.DefaultUp );
    		this.updateMatrix();

    		this.target = new Object3D();

    		this.shadow = new DirectionalLightShadow();

    	}

    	dispose() {

    		this.shadow.dispose();

    	}

    	copy( source ) {

    		super.copy( source );

    		this.target = source.target.clone();
    		this.shadow = source.shadow.clone();

    		return this;

    	}

    }

    class AmbientLight extends Light {

    	constructor( color, intensity ) {

    		super( color, intensity );

    		this.isAmbientLight = true;

    		this.type = 'AmbientLight';

    	}

    }

    class RectAreaLight extends Light {

    	constructor( color, intensity, width = 10, height = 10 ) {

    		super( color, intensity );

    		this.isRectAreaLight = true;

    		this.type = 'RectAreaLight';

    		this.width = width;
    		this.height = height;

    	}

    	get power() {

    		// compute the light's luminous power (in lumens) from its intensity (in nits)
    		return this.intensity * this.width * this.height * Math.PI;

    	}

    	set power( power ) {

    		// set the light's intensity (in nits) from the desired luminous power (in lumens)
    		this.intensity = power / ( this.width * this.height * Math.PI );

    	}

    	copy( source ) {

    		super.copy( source );

    		this.width = source.width;
    		this.height = source.height;

    		return this;

    	}

    	toJSON( meta ) {

    		const data = super.toJSON( meta );

    		data.object.width = this.width;
    		data.object.height = this.height;

    		return data;

    	}

    }

    /**
     * Primary reference:
     *   https://graphics.stanford.edu/papers/envmap/envmap.pdf
     *
     * Secondary reference:
     *   https://www.ppsloan.org/publications/StupidSH36.pdf
     */

    // 3-band SH defined by 9 coefficients

    class SphericalHarmonics3 {

    	constructor() {

    		this.isSphericalHarmonics3 = true;

    		this.coefficients = [];

    		for ( let i = 0; i < 9; i ++ ) {

    			this.coefficients.push( new Vector3() );

    		}

    	}

    	set( coefficients ) {

    		for ( let i = 0; i < 9; i ++ ) {

    			this.coefficients[ i ].copy( coefficients[ i ] );

    		}

    		return this;

    	}

    	zero() {

    		for ( let i = 0; i < 9; i ++ ) {

    			this.coefficients[ i ].set( 0, 0, 0 );

    		}

    		return this;

    	}

    	// get the radiance in the direction of the normal
    	// target is a Vector3
    	getAt( normal, target ) {

    		// normal is assumed to be unit length

    		const x = normal.x, y = normal.y, z = normal.z;

    		const coeff = this.coefficients;

    		// band 0
    		target.copy( coeff[ 0 ] ).multiplyScalar( 0.282095 );

    		// band 1
    		target.addScaledVector( coeff[ 1 ], 0.488603 * y );
    		target.addScaledVector( coeff[ 2 ], 0.488603 * z );
    		target.addScaledVector( coeff[ 3 ], 0.488603 * x );

    		// band 2
    		target.addScaledVector( coeff[ 4 ], 1.092548 * ( x * y ) );
    		target.addScaledVector( coeff[ 5 ], 1.092548 * ( y * z ) );
    		target.addScaledVector( coeff[ 6 ], 0.315392 * ( 3.0 * z * z - 1.0 ) );
    		target.addScaledVector( coeff[ 7 ], 1.092548 * ( x * z ) );
    		target.addScaledVector( coeff[ 8 ], 0.546274 * ( x * x - y * y ) );

    		return target;

    	}

    	// get the irradiance (radiance convolved with cosine lobe) in the direction of the normal
    	// target is a Vector3
    	// https://graphics.stanford.edu/papers/envmap/envmap.pdf
    	getIrradianceAt( normal, target ) {

    		// normal is assumed to be unit length

    		const x = normal.x, y = normal.y, z = normal.z;

    		const coeff = this.coefficients;

    		// band 0
    		target.copy( coeff[ 0 ] ).multiplyScalar( 0.886227 ); // π * 0.282095

    		// band 1
    		target.addScaledVector( coeff[ 1 ], 2.0 * 0.511664 * y ); // ( 2 * π / 3 ) * 0.488603
    		target.addScaledVector( coeff[ 2 ], 2.0 * 0.511664 * z );
    		target.addScaledVector( coeff[ 3 ], 2.0 * 0.511664 * x );

    		// band 2
    		target.addScaledVector( coeff[ 4 ], 2.0 * 0.429043 * x * y ); // ( π / 4 ) * 1.092548
    		target.addScaledVector( coeff[ 5 ], 2.0 * 0.429043 * y * z );
    		target.addScaledVector( coeff[ 6 ], 0.743125 * z * z - 0.247708 ); // ( π / 4 ) * 0.315392 * 3
    		target.addScaledVector( coeff[ 7 ], 2.0 * 0.429043 * x * z );
    		target.addScaledVector( coeff[ 8 ], 0.429043 * ( x * x - y * y ) ); // ( π / 4 ) * 0.546274

    		return target;

    	}

    	add( sh ) {

    		for ( let i = 0; i < 9; i ++ ) {

    			this.coefficients[ i ].add( sh.coefficients[ i ] );

    		}

    		return this;

    	}

    	addScaledSH( sh, s ) {

    		for ( let i = 0; i < 9; i ++ ) {

    			this.coefficients[ i ].addScaledVector( sh.coefficients[ i ], s );

    		}

    		return this;

    	}

    	scale( s ) {

    		for ( let i = 0; i < 9; i ++ ) {

    			this.coefficients[ i ].multiplyScalar( s );

    		}

    		return this;

    	}

    	lerp( sh, alpha ) {

    		for ( let i = 0; i < 9; i ++ ) {

    			this.coefficients[ i ].lerp( sh.coefficients[ i ], alpha );

    		}

    		return this;

    	}

    	equals( sh ) {

    		for ( let i = 0; i < 9; i ++ ) {

    			if ( ! this.coefficients[ i ].equals( sh.coefficients[ i ] ) ) {

    				return false;

    			}

    		}

    		return true;

    	}

    	copy( sh ) {

    		return this.set( sh.coefficients );

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    	fromArray( array, offset = 0 ) {

    		const coefficients = this.coefficients;

    		for ( let i = 0; i < 9; i ++ ) {

    			coefficients[ i ].fromArray( array, offset + ( i * 3 ) );

    		}

    		return this;

    	}

    	toArray( array = [], offset = 0 ) {

    		const coefficients = this.coefficients;

    		for ( let i = 0; i < 9; i ++ ) {

    			coefficients[ i ].toArray( array, offset + ( i * 3 ) );

    		}

    		return array;

    	}

    	// evaluate the basis functions
    	// shBasis is an Array[ 9 ]
    	static getBasisAt( normal, shBasis ) {

    		// normal is assumed to be unit length

    		const x = normal.x, y = normal.y, z = normal.z;

    		// band 0
    		shBasis[ 0 ] = 0.282095;

    		// band 1
    		shBasis[ 1 ] = 0.488603 * y;
    		shBasis[ 2 ] = 0.488603 * z;
    		shBasis[ 3 ] = 0.488603 * x;

    		// band 2
    		shBasis[ 4 ] = 1.092548 * x * y;
    		shBasis[ 5 ] = 1.092548 * y * z;
    		shBasis[ 6 ] = 0.315392 * ( 3 * z * z - 1 );
    		shBasis[ 7 ] = 1.092548 * x * z;
    		shBasis[ 8 ] = 0.546274 * ( x * x - y * y );

    	}

    }

    class LightProbe extends Light {

    	constructor( sh = new SphericalHarmonics3(), intensity = 1 ) {

    		super( undefined, intensity );

    		this.isLightProbe = true;

    		this.sh = sh;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.sh.copy( source.sh );

    		return this;

    	}

    	fromJSON( json ) {

    		this.intensity = json.intensity; // TODO: Move this bit to Light.fromJSON();
    		this.sh.fromArray( json.sh );

    		return this;

    	}

    	toJSON( meta ) {

    		const data = super.toJSON( meta );

    		data.object.sh = this.sh.toArray();

    		return data;

    	}

    }

    class MaterialLoader extends Loader {

    	constructor( manager ) {

    		super( manager );
    		this.textures = {};

    	}

    	load( url, onLoad, onProgress, onError ) {

    		const scope = this;

    		const loader = new FileLoader( scope.manager );
    		loader.setPath( scope.path );
    		loader.setRequestHeader( scope.requestHeader );
    		loader.setWithCredentials( scope.withCredentials );
    		loader.load( url, function ( text ) {

    			try {

    				onLoad( scope.parse( JSON.parse( text ) ) );

    			} catch ( e ) {

    				if ( onError ) {

    					onError( e );

    				} else {

    					console.error( e );

    				}

    				scope.manager.itemError( url );

    			}

    		}, onProgress, onError );

    	}

    	parse( json ) {

    		const textures = this.textures;

    		function getTexture( name ) {

    			if ( textures[ name ] === undefined ) {

    				console.warn( 'THREE.MaterialLoader: Undefined texture', name );

    			}

    			return textures[ name ];

    		}

    		const material = MaterialLoader.createMaterialFromType( json.type );

    		if ( json.uuid !== undefined ) material.uuid = json.uuid;
    		if ( json.name !== undefined ) material.name = json.name;
    		if ( json.color !== undefined && material.color !== undefined ) material.color.setHex( json.color );
    		if ( json.roughness !== undefined ) material.roughness = json.roughness;
    		if ( json.metalness !== undefined ) material.metalness = json.metalness;
    		if ( json.sheen !== undefined ) material.sheen = json.sheen;
    		if ( json.sheenColor !== undefined ) material.sheenColor = new Color().setHex( json.sheenColor );
    		if ( json.sheenRoughness !== undefined ) material.sheenRoughness = json.sheenRoughness;
    		if ( json.emissive !== undefined && material.emissive !== undefined ) material.emissive.setHex( json.emissive );
    		if ( json.specular !== undefined && material.specular !== undefined ) material.specular.setHex( json.specular );
    		if ( json.specularIntensity !== undefined ) material.specularIntensity = json.specularIntensity;
    		if ( json.specularColor !== undefined && material.specularColor !== undefined ) material.specularColor.setHex( json.specularColor );
    		if ( json.shininess !== undefined ) material.shininess = json.shininess;
    		if ( json.clearcoat !== undefined ) material.clearcoat = json.clearcoat;
    		if ( json.clearcoatRoughness !== undefined ) material.clearcoatRoughness = json.clearcoatRoughness;
    		if ( json.iridescence !== undefined ) material.iridescence = json.iridescence;
    		if ( json.iridescenceIOR !== undefined ) material.iridescenceIOR = json.iridescenceIOR;
    		if ( json.iridescenceThicknessRange !== undefined ) material.iridescenceThicknessRange = json.iridescenceThicknessRange;
    		if ( json.transmission !== undefined ) material.transmission = json.transmission;
    		if ( json.thickness !== undefined ) material.thickness = json.thickness;
    		if ( json.attenuationDistance !== undefined ) material.attenuationDistance = json.attenuationDistance;
    		if ( json.attenuationColor !== undefined && material.attenuationColor !== undefined ) material.attenuationColor.setHex( json.attenuationColor );
    		if ( json.fog !== undefined ) material.fog = json.fog;
    		if ( json.flatShading !== undefined ) material.flatShading = json.flatShading;
    		if ( json.blending !== undefined ) material.blending = json.blending;
    		if ( json.combine !== undefined ) material.combine = json.combine;
    		if ( json.side !== undefined ) material.side = json.side;
    		if ( json.shadowSide !== undefined ) material.shadowSide = json.shadowSide;
    		if ( json.opacity !== undefined ) material.opacity = json.opacity;
    		if ( json.transparent !== undefined ) material.transparent = json.transparent;
    		if ( json.alphaTest !== undefined ) material.alphaTest = json.alphaTest;
    		if ( json.depthTest !== undefined ) material.depthTest = json.depthTest;
    		if ( json.depthWrite !== undefined ) material.depthWrite = json.depthWrite;
    		if ( json.colorWrite !== undefined ) material.colorWrite = json.colorWrite;

    		if ( json.stencilWrite !== undefined ) material.stencilWrite = json.stencilWrite;
    		if ( json.stencilWriteMask !== undefined ) material.stencilWriteMask = json.stencilWriteMask;
    		if ( json.stencilFunc !== undefined ) material.stencilFunc = json.stencilFunc;
    		if ( json.stencilRef !== undefined ) material.stencilRef = json.stencilRef;
    		if ( json.stencilFuncMask !== undefined ) material.stencilFuncMask = json.stencilFuncMask;
    		if ( json.stencilFail !== undefined ) material.stencilFail = json.stencilFail;
    		if ( json.stencilZFail !== undefined ) material.stencilZFail = json.stencilZFail;
    		if ( json.stencilZPass !== undefined ) material.stencilZPass = json.stencilZPass;

    		if ( json.wireframe !== undefined ) material.wireframe = json.wireframe;
    		if ( json.wireframeLinewidth !== undefined ) material.wireframeLinewidth = json.wireframeLinewidth;
    		if ( json.wireframeLinecap !== undefined ) material.wireframeLinecap = json.wireframeLinecap;
    		if ( json.wireframeLinejoin !== undefined ) material.wireframeLinejoin = json.wireframeLinejoin;

    		if ( json.rotation !== undefined ) material.rotation = json.rotation;

    		if ( json.linewidth !== 1 ) material.linewidth = json.linewidth;
    		if ( json.dashSize !== undefined ) material.dashSize = json.dashSize;
    		if ( json.gapSize !== undefined ) material.gapSize = json.gapSize;
    		if ( json.scale !== undefined ) material.scale = json.scale;

    		if ( json.polygonOffset !== undefined ) material.polygonOffset = json.polygonOffset;
    		if ( json.polygonOffsetFactor !== undefined ) material.polygonOffsetFactor = json.polygonOffsetFactor;
    		if ( json.polygonOffsetUnits !== undefined ) material.polygonOffsetUnits = json.polygonOffsetUnits;

    		if ( json.dithering !== undefined ) material.dithering = json.dithering;

    		if ( json.alphaToCoverage !== undefined ) material.alphaToCoverage = json.alphaToCoverage;
    		if ( json.premultipliedAlpha !== undefined ) material.premultipliedAlpha = json.premultipliedAlpha;

    		if ( json.visible !== undefined ) material.visible = json.visible;

    		if ( json.toneMapped !== undefined ) material.toneMapped = json.toneMapped;

    		if ( json.userData !== undefined ) material.userData = json.userData;

    		if ( json.vertexColors !== undefined ) {

    			if ( typeof json.vertexColors === 'number' ) {

    				material.vertexColors = ( json.vertexColors > 0 ) ? true : false;

    			} else {

    				material.vertexColors = json.vertexColors;

    			}

    		}

    		// Shader Material

    		if ( json.uniforms !== undefined ) {

    			for ( const name in json.uniforms ) {

    				const uniform = json.uniforms[ name ];

    				material.uniforms[ name ] = {};

    				switch ( uniform.type ) {

    					case 't':
    						material.uniforms[ name ].value = getTexture( uniform.value );
    						break;

    					case 'c':
    						material.uniforms[ name ].value = new Color().setHex( uniform.value );
    						break;

    					case 'v2':
    						material.uniforms[ name ].value = new Vector2().fromArray( uniform.value );
    						break;

    					case 'v3':
    						material.uniforms[ name ].value = new Vector3().fromArray( uniform.value );
    						break;

    					case 'v4':
    						material.uniforms[ name ].value = new Vector4().fromArray( uniform.value );
    						break;

    					case 'm3':
    						material.uniforms[ name ].value = new Matrix3().fromArray( uniform.value );
    						break;

    					case 'm4':
    						material.uniforms[ name ].value = new Matrix4().fromArray( uniform.value );
    						break;

    					default:
    						material.uniforms[ name ].value = uniform.value;

    				}

    			}

    		}

    		if ( json.defines !== undefined ) material.defines = json.defines;
    		if ( json.vertexShader !== undefined ) material.vertexShader = json.vertexShader;
    		if ( json.fragmentShader !== undefined ) material.fragmentShader = json.fragmentShader;
    		if ( json.glslVersion !== undefined ) material.glslVersion = json.glslVersion;

    		if ( json.extensions !== undefined ) {

    			for ( const key in json.extensions ) {

    				material.extensions[ key ] = json.extensions[ key ];

    			}

    		}

    		// for PointsMaterial

    		if ( json.size !== undefined ) material.size = json.size;
    		if ( json.sizeAttenuation !== undefined ) material.sizeAttenuation = json.sizeAttenuation;

    		// maps

    		if ( json.map !== undefined ) material.map = getTexture( json.map );
    		if ( json.matcap !== undefined ) material.matcap = getTexture( json.matcap );

    		if ( json.alphaMap !== undefined ) material.alphaMap = getTexture( json.alphaMap );

    		if ( json.bumpMap !== undefined ) material.bumpMap = getTexture( json.bumpMap );
    		if ( json.bumpScale !== undefined ) material.bumpScale = json.bumpScale;

    		if ( json.normalMap !== undefined ) material.normalMap = getTexture( json.normalMap );
    		if ( json.normalMapType !== undefined ) material.normalMapType = json.normalMapType;
    		if ( json.normalScale !== undefined ) {

    			let normalScale = json.normalScale;

    			if ( Array.isArray( normalScale ) === false ) {

    				// Blender exporter used to export a scalar. See #7459

    				normalScale = [ normalScale, normalScale ];

    			}

    			material.normalScale = new Vector2().fromArray( normalScale );

    		}

    		if ( json.displacementMap !== undefined ) material.displacementMap = getTexture( json.displacementMap );
    		if ( json.displacementScale !== undefined ) material.displacementScale = json.displacementScale;
    		if ( json.displacementBias !== undefined ) material.displacementBias = json.displacementBias;

    		if ( json.roughnessMap !== undefined ) material.roughnessMap = getTexture( json.roughnessMap );
    		if ( json.metalnessMap !== undefined ) material.metalnessMap = getTexture( json.metalnessMap );

    		if ( json.emissiveMap !== undefined ) material.emissiveMap = getTexture( json.emissiveMap );
    		if ( json.emissiveIntensity !== undefined ) material.emissiveIntensity = json.emissiveIntensity;

    		if ( json.specularMap !== undefined ) material.specularMap = getTexture( json.specularMap );
    		if ( json.specularIntensityMap !== undefined ) material.specularIntensityMap = getTexture( json.specularIntensityMap );
    		if ( json.specularColorMap !== undefined ) material.specularColorMap = getTexture( json.specularColorMap );

    		if ( json.envMap !== undefined ) material.envMap = getTexture( json.envMap );
    		if ( json.envMapIntensity !== undefined ) material.envMapIntensity = json.envMapIntensity;

    		if ( json.reflectivity !== undefined ) material.reflectivity = json.reflectivity;
    		if ( json.refractionRatio !== undefined ) material.refractionRatio = json.refractionRatio;

    		if ( json.lightMap !== undefined ) material.lightMap = getTexture( json.lightMap );
    		if ( json.lightMapIntensity !== undefined ) material.lightMapIntensity = json.lightMapIntensity;

    		if ( json.aoMap !== undefined ) material.aoMap = getTexture( json.aoMap );
    		if ( json.aoMapIntensity !== undefined ) material.aoMapIntensity = json.aoMapIntensity;

    		if ( json.gradientMap !== undefined ) material.gradientMap = getTexture( json.gradientMap );

    		if ( json.clearcoatMap !== undefined ) material.clearcoatMap = getTexture( json.clearcoatMap );
    		if ( json.clearcoatRoughnessMap !== undefined ) material.clearcoatRoughnessMap = getTexture( json.clearcoatRoughnessMap );
    		if ( json.clearcoatNormalMap !== undefined ) material.clearcoatNormalMap = getTexture( json.clearcoatNormalMap );
    		if ( json.clearcoatNormalScale !== undefined ) material.clearcoatNormalScale = new Vector2().fromArray( json.clearcoatNormalScale );

    		if ( json.iridescenceMap !== undefined ) material.iridescenceMap = getTexture( json.iridescenceMap );
    		if ( json.iridescenceThicknessMap !== undefined ) material.iridescenceThicknessMap = getTexture( json.iridescenceThicknessMap );

    		if ( json.transmissionMap !== undefined ) material.transmissionMap = getTexture( json.transmissionMap );
    		if ( json.thicknessMap !== undefined ) material.thicknessMap = getTexture( json.thicknessMap );

    		if ( json.sheenColorMap !== undefined ) material.sheenColorMap = getTexture( json.sheenColorMap );
    		if ( json.sheenRoughnessMap !== undefined ) material.sheenRoughnessMap = getTexture( json.sheenRoughnessMap );

    		return material;

    	}

    	setTextures( value ) {

    		this.textures = value;
    		return this;

    	}

    	static createMaterialFromType( type ) {

    		const materialLib = {
    			ShadowMaterial,
    			SpriteMaterial,
    			RawShaderMaterial,
    			ShaderMaterial,
    			PointsMaterial,
    			MeshPhysicalMaterial,
    			MeshStandardMaterial,
    			MeshPhongMaterial,
    			MeshToonMaterial,
    			MeshNormalMaterial,
    			MeshLambertMaterial,
    			MeshDepthMaterial,
    			MeshDistanceMaterial,
    			MeshBasicMaterial,
    			MeshMatcapMaterial,
    			LineDashedMaterial,
    			LineBasicMaterial,
    			Material
    		};

    		return new materialLib[ type ]();

    	}

    }

    class LoaderUtils {

    	static decodeText( array ) {

    		if ( typeof TextDecoder !== 'undefined' ) {

    			return new TextDecoder().decode( array );

    		}

    		// Avoid the String.fromCharCode.apply(null, array) shortcut, which
    		// throws a "maximum call stack size exceeded" error for large arrays.

    		let s = '';

    		for ( let i = 0, il = array.length; i < il; i ++ ) {

    			// Implicitly assumes little-endian.
    			s += String.fromCharCode( array[ i ] );

    		}

    		try {

    			// merges multi-byte utf-8 characters.

    			return decodeURIComponent( escape( s ) );

    		} catch ( e ) { // see #16358

    			return s;

    		}

    	}

    	static extractUrlBase( url ) {

    		const index = url.lastIndexOf( '/' );

    		if ( index === - 1 ) return './';

    		return url.slice( 0, index + 1 );

    	}

    	static resolveURL( url, path ) {

    		// Invalid URL
    		if ( typeof url !== 'string' || url === '' ) return '';

    		// Host Relative URL
    		if ( /^https?:\/\//i.test( path ) && /^\//.test( url ) ) {

    			path = path.replace( /(^https?:\/\/[^\/]+).*/i, '$1' );

    		}

    		// Absolute URL http://,https://,//
    		if ( /^(https?:)?\/\//i.test( url ) ) return url;

    		// Data URI
    		if ( /^data:.*,.*$/i.test( url ) ) return url;

    		// Blob URL
    		if ( /^blob:.*$/i.test( url ) ) return url;

    		// Relative URL
    		return path + url;

    	}

    }

    class InstancedBufferGeometry extends BufferGeometry {

    	constructor() {

    		super();

    		this.isInstancedBufferGeometry = true;

    		this.type = 'InstancedBufferGeometry';
    		this.instanceCount = Infinity;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.instanceCount = source.instanceCount;

    		return this;

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    	toJSON() {

    		const data = super.toJSON( this );

    		data.instanceCount = this.instanceCount;

    		data.isInstancedBufferGeometry = true;

    		return data;

    	}

    }

    class BufferGeometryLoader extends Loader {

    	constructor( manager ) {

    		super( manager );

    	}

    	load( url, onLoad, onProgress, onError ) {

    		const scope = this;

    		const loader = new FileLoader( scope.manager );
    		loader.setPath( scope.path );
    		loader.setRequestHeader( scope.requestHeader );
    		loader.setWithCredentials( scope.withCredentials );
    		loader.load( url, function ( text ) {

    			try {

    				onLoad( scope.parse( JSON.parse( text ) ) );

    			} catch ( e ) {

    				if ( onError ) {

    					onError( e );

    				} else {

    					console.error( e );

    				}

    				scope.manager.itemError( url );

    			}

    		}, onProgress, onError );

    	}

    	parse( json ) {

    		const interleavedBufferMap = {};
    		const arrayBufferMap = {};

    		function getInterleavedBuffer( json, uuid ) {

    			if ( interleavedBufferMap[ uuid ] !== undefined ) return interleavedBufferMap[ uuid ];

    			const interleavedBuffers = json.interleavedBuffers;
    			const interleavedBuffer = interleavedBuffers[ uuid ];

    			const buffer = getArrayBuffer( json, interleavedBuffer.buffer );

    			const array = getTypedArray( interleavedBuffer.type, buffer );
    			const ib = new InterleavedBuffer( array, interleavedBuffer.stride );
    			ib.uuid = interleavedBuffer.uuid;

    			interleavedBufferMap[ uuid ] = ib;

    			return ib;

    		}

    		function getArrayBuffer( json, uuid ) {

    			if ( arrayBufferMap[ uuid ] !== undefined ) return arrayBufferMap[ uuid ];

    			const arrayBuffers = json.arrayBuffers;
    			const arrayBuffer = arrayBuffers[ uuid ];

    			const ab = new Uint32Array( arrayBuffer ).buffer;

    			arrayBufferMap[ uuid ] = ab;

    			return ab;

    		}

    		const geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();

    		const index = json.data.index;

    		if ( index !== undefined ) {

    			const typedArray = getTypedArray( index.type, index.array );
    			geometry.setIndex( new BufferAttribute( typedArray, 1 ) );

    		}

    		const attributes = json.data.attributes;

    		for ( const key in attributes ) {

    			const attribute = attributes[ key ];
    			let bufferAttribute;

    			if ( attribute.isInterleavedBufferAttribute ) {

    				const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );
    				bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );

    			} else {

    				const typedArray = getTypedArray( attribute.type, attribute.array );
    				const bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;
    				bufferAttribute = new bufferAttributeConstr( typedArray, attribute.itemSize, attribute.normalized );

    			}

    			if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;
    			if ( attribute.usage !== undefined ) bufferAttribute.setUsage( attribute.usage );

    			if ( attribute.updateRange !== undefined ) {

    				bufferAttribute.updateRange.offset = attribute.updateRange.offset;
    				bufferAttribute.updateRange.count = attribute.updateRange.count;

    			}

    			geometry.setAttribute( key, bufferAttribute );

    		}

    		const morphAttributes = json.data.morphAttributes;

    		if ( morphAttributes ) {

    			for ( const key in morphAttributes ) {

    				const attributeArray = morphAttributes[ key ];

    				const array = [];

    				for ( let i = 0, il = attributeArray.length; i < il; i ++ ) {

    					const attribute = attributeArray[ i ];
    					let bufferAttribute;

    					if ( attribute.isInterleavedBufferAttribute ) {

    						const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );
    						bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );

    					} else {

    						const typedArray = getTypedArray( attribute.type, attribute.array );
    						bufferAttribute = new BufferAttribute( typedArray, attribute.itemSize, attribute.normalized );

    					}

    					if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;
    					array.push( bufferAttribute );

    				}

    				geometry.morphAttributes[ key ] = array;

    			}

    		}

    		const morphTargetsRelative = json.data.morphTargetsRelative;

    		if ( morphTargetsRelative ) {

    			geometry.morphTargetsRelative = true;

    		}

    		const groups = json.data.groups || json.data.drawcalls || json.data.offsets;

    		if ( groups !== undefined ) {

    			for ( let i = 0, n = groups.length; i !== n; ++ i ) {

    				const group = groups[ i ];

    				geometry.addGroup( group.start, group.count, group.materialIndex );

    			}

    		}

    		const boundingSphere = json.data.boundingSphere;

    		if ( boundingSphere !== undefined ) {

    			const center = new Vector3();

    			if ( boundingSphere.center !== undefined ) {

    				center.fromArray( boundingSphere.center );

    			}

    			geometry.boundingSphere = new Sphere( center, boundingSphere.radius );

    		}

    		if ( json.name ) geometry.name = json.name;
    		if ( json.userData ) geometry.userData = json.userData;

    		return geometry;

    	}

    }

    class ObjectLoader extends Loader {

    	constructor( manager ) {

    		super( manager );

    	}

    	load( url, onLoad, onProgress, onError ) {

    		const scope = this;

    		const path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;
    		this.resourcePath = this.resourcePath || path;

    		const loader = new FileLoader( this.manager );
    		loader.setPath( this.path );
    		loader.setRequestHeader( this.requestHeader );
    		loader.setWithCredentials( this.withCredentials );
    		loader.load( url, function ( text ) {

    			let json = null;

    			try {

    				json = JSON.parse( text );

    			} catch ( error ) {

    				if ( onError !== undefined ) onError( error );

    				console.error( 'THREE:ObjectLoader: Can\'t parse ' + url + '.', error.message );

    				return;

    			}

    			const metadata = json.metadata;

    			if ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {

    				console.error( 'THREE.ObjectLoader: Can\'t load ' + url );
    				return;

    			}

    			scope.parse( json, onLoad );

    		}, onProgress, onError );

    	}

    	async loadAsync( url, onProgress ) {

    		const scope = this;

    		const path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;
    		this.resourcePath = this.resourcePath || path;

    		const loader = new FileLoader( this.manager );
    		loader.setPath( this.path );
    		loader.setRequestHeader( this.requestHeader );
    		loader.setWithCredentials( this.withCredentials );

    		const text = await loader.loadAsync( url, onProgress );

    		const json = JSON.parse( text );

    		const metadata = json.metadata;

    		if ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {

    			throw new Error( 'THREE.ObjectLoader: Can\'t load ' + url );

    		}

    		return await scope.parseAsync( json );

    	}

    	parse( json, onLoad ) {

    		const animations = this.parseAnimations( json.animations );
    		const shapes = this.parseShapes( json.shapes );
    		const geometries = this.parseGeometries( json.geometries, shapes );

    		const images = this.parseImages( json.images, function () {

    			if ( onLoad !== undefined ) onLoad( object );

    		} );

    		const textures = this.parseTextures( json.textures, images );
    		const materials = this.parseMaterials( json.materials, textures );

    		const object = this.parseObject( json.object, geometries, materials, textures, animations );
    		const skeletons = this.parseSkeletons( json.skeletons, object );

    		this.bindSkeletons( object, skeletons );

    		//

    		if ( onLoad !== undefined ) {

    			let hasImages = false;

    			for ( const uuid in images ) {

    				if ( images[ uuid ].data instanceof HTMLImageElement ) {

    					hasImages = true;
    					break;

    				}

    			}

    			if ( hasImages === false ) onLoad( object );

    		}

    		return object;

    	}

    	async parseAsync( json ) {

    		const animations = this.parseAnimations( json.animations );
    		const shapes = this.parseShapes( json.shapes );
    		const geometries = this.parseGeometries( json.geometries, shapes );

    		const images = await this.parseImagesAsync( json.images );

    		const textures = this.parseTextures( json.textures, images );
    		const materials = this.parseMaterials( json.materials, textures );

    		const object = this.parseObject( json.object, geometries, materials, textures, animations );
    		const skeletons = this.parseSkeletons( json.skeletons, object );

    		this.bindSkeletons( object, skeletons );

    		return object;

    	}

    	parseShapes( json ) {

    		const shapes = {};

    		if ( json !== undefined ) {

    			for ( let i = 0, l = json.length; i < l; i ++ ) {

    				const shape = new Shape().fromJSON( json[ i ] );

    				shapes[ shape.uuid ] = shape;

    			}

    		}

    		return shapes;

    	}

    	parseSkeletons( json, object ) {

    		const skeletons = {};
    		const bones = {};

    		// generate bone lookup table

    		object.traverse( function ( child ) {

    			if ( child.isBone ) bones[ child.uuid ] = child;

    		} );

    		// create skeletons

    		if ( json !== undefined ) {

    			for ( let i = 0, l = json.length; i < l; i ++ ) {

    				const skeleton = new Skeleton().fromJSON( json[ i ], bones );

    				skeletons[ skeleton.uuid ] = skeleton;

    			}

    		}

    		return skeletons;

    	}

    	parseGeometries( json, shapes ) {

    		const geometries = {};

    		if ( json !== undefined ) {

    			const bufferGeometryLoader = new BufferGeometryLoader();

    			for ( let i = 0, l = json.length; i < l; i ++ ) {

    				let geometry;
    				const data = json[ i ];

    				switch ( data.type ) {

    					case 'BufferGeometry':
    					case 'InstancedBufferGeometry':

    						geometry = bufferGeometryLoader.parse( data );
    						break;

    					default:

    						if ( data.type in Geometries ) {

    							geometry = Geometries[ data.type ].fromJSON( data, shapes );

    						} else {

    							console.warn( `THREE.ObjectLoader: Unsupported geometry type "${ data.type }"` );

    						}

    				}

    				geometry.uuid = data.uuid;

    				if ( data.name !== undefined ) geometry.name = data.name;
    				if ( geometry.isBufferGeometry === true && data.userData !== undefined ) geometry.userData = data.userData;

    				geometries[ data.uuid ] = geometry;

    			}

    		}

    		return geometries;

    	}

    	parseMaterials( json, textures ) {

    		const cache = {}; // MultiMaterial
    		const materials = {};

    		if ( json !== undefined ) {

    			const loader = new MaterialLoader();
    			loader.setTextures( textures );

    			for ( let i = 0, l = json.length; i < l; i ++ ) {

    				const data = json[ i ];

    				if ( cache[ data.uuid ] === undefined ) {

    					cache[ data.uuid ] = loader.parse( data );

    				}

    				materials[ data.uuid ] = cache[ data.uuid ];

    			}

    		}

    		return materials;

    	}

    	parseAnimations( json ) {

    		const animations = {};

    		if ( json !== undefined ) {

    			for ( let i = 0; i < json.length; i ++ ) {

    				const data = json[ i ];

    				const clip = AnimationClip.parse( data );

    				animations[ clip.uuid ] = clip;

    			}

    		}

    		return animations;

    	}

    	parseImages( json, onLoad ) {

    		const scope = this;
    		const images = {};

    		let loader;

    		function loadImage( url ) {

    			scope.manager.itemStart( url );

    			return loader.load( url, function () {

    				scope.manager.itemEnd( url );

    			}, undefined, function () {

    				scope.manager.itemError( url );
    				scope.manager.itemEnd( url );

    			} );

    		}

    		function deserializeImage( image ) {

    			if ( typeof image === 'string' ) {

    				const url = image;

    				const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( url ) ? url : scope.resourcePath + url;

    				return loadImage( path );

    			} else {

    				if ( image.data ) {

    					return {
    						data: getTypedArray( image.type, image.data ),
    						width: image.width,
    						height: image.height
    					};

    				} else {

    					return null;

    				}

    			}

    		}

    		if ( json !== undefined && json.length > 0 ) {

    			const manager = new LoadingManager( onLoad );

    			loader = new ImageLoader( manager );
    			loader.setCrossOrigin( this.crossOrigin );

    			for ( let i = 0, il = json.length; i < il; i ++ ) {

    				const image = json[ i ];
    				const url = image.url;

    				if ( Array.isArray( url ) ) {

    					// load array of images e.g CubeTexture

    					const imageArray = [];

    					for ( let j = 0, jl = url.length; j < jl; j ++ ) {

    						const currentUrl = url[ j ];

    						const deserializedImage = deserializeImage( currentUrl );

    						if ( deserializedImage !== null ) {

    							if ( deserializedImage instanceof HTMLImageElement ) {

    								imageArray.push( deserializedImage );

    							} else {

    								// special case: handle array of data textures for cube textures

    								imageArray.push( new DataTexture( deserializedImage.data, deserializedImage.width, deserializedImage.height ) );

    							}

    						}

    					}

    					images[ image.uuid ] = new Source( imageArray );

    				} else {

    					// load single image

    					const deserializedImage = deserializeImage( image.url );
    					images[ image.uuid ] = new Source( deserializedImage );


    				}

    			}

    		}

    		return images;

    	}

    	async parseImagesAsync( json ) {

    		const scope = this;
    		const images = {};

    		let loader;

    		async function deserializeImage( image ) {

    			if ( typeof image === 'string' ) {

    				const url = image;

    				const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( url ) ? url : scope.resourcePath + url;

    				return await loader.loadAsync( path );

    			} else {

    				if ( image.data ) {

    					return {
    						data: getTypedArray( image.type, image.data ),
    						width: image.width,
    						height: image.height
    					};

    				} else {

    					return null;

    				}

    			}

    		}

    		if ( json !== undefined && json.length > 0 ) {

    			loader = new ImageLoader( this.manager );
    			loader.setCrossOrigin( this.crossOrigin );

    			for ( let i = 0, il = json.length; i < il; i ++ ) {

    				const image = json[ i ];
    				const url = image.url;

    				if ( Array.isArray( url ) ) {

    					// load array of images e.g CubeTexture

    					const imageArray = [];

    					for ( let j = 0, jl = url.length; j < jl; j ++ ) {

    						const currentUrl = url[ j ];

    						const deserializedImage = await deserializeImage( currentUrl );

    						if ( deserializedImage !== null ) {

    							if ( deserializedImage instanceof HTMLImageElement ) {

    								imageArray.push( deserializedImage );

    							} else {

    								// special case: handle array of data textures for cube textures

    								imageArray.push( new DataTexture( deserializedImage.data, deserializedImage.width, deserializedImage.height ) );

    							}

    						}

    					}

    					images[ image.uuid ] = new Source( imageArray );

    				} else {

    					// load single image

    					const deserializedImage = await deserializeImage( image.url );
    					images[ image.uuid ] = new Source( deserializedImage );

    				}

    			}

    		}

    		return images;

    	}

    	parseTextures( json, images ) {

    		function parseConstant( value, type ) {

    			if ( typeof value === 'number' ) return value;

    			console.warn( 'THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value );

    			return type[ value ];

    		}

    		const textures = {};

    		if ( json !== undefined ) {

    			for ( let i = 0, l = json.length; i < l; i ++ ) {

    				const data = json[ i ];

    				if ( data.image === undefined ) {

    					console.warn( 'THREE.ObjectLoader: No "image" specified for', data.uuid );

    				}

    				if ( images[ data.image ] === undefined ) {

    					console.warn( 'THREE.ObjectLoader: Undefined image', data.image );

    				}

    				const source = images[ data.image ];
    				const image = source.data;

    				let texture;

    				if ( Array.isArray( image ) ) {

    					texture = new CubeTexture();

    					if ( image.length === 6 ) texture.needsUpdate = true;

    				} else {

    					if ( image && image.data ) {

    						texture = new DataTexture();

    					} else {

    						texture = new Texture();

    					}

    					if ( image ) texture.needsUpdate = true; // textures can have undefined image data

    				}

    				texture.source = source;

    				texture.uuid = data.uuid;

    				if ( data.name !== undefined ) texture.name = data.name;

    				if ( data.mapping !== undefined ) texture.mapping = parseConstant( data.mapping, TEXTURE_MAPPING );

    				if ( data.offset !== undefined ) texture.offset.fromArray( data.offset );
    				if ( data.repeat !== undefined ) texture.repeat.fromArray( data.repeat );
    				if ( data.center !== undefined ) texture.center.fromArray( data.center );
    				if ( data.rotation !== undefined ) texture.rotation = data.rotation;

    				if ( data.wrap !== undefined ) {

    					texture.wrapS = parseConstant( data.wrap[ 0 ], TEXTURE_WRAPPING );
    					texture.wrapT = parseConstant( data.wrap[ 1 ], TEXTURE_WRAPPING );

    				}

    				if ( data.format !== undefined ) texture.format = data.format;
    				if ( data.type !== undefined ) texture.type = data.type;
    				if ( data.encoding !== undefined ) texture.encoding = data.encoding;

    				if ( data.minFilter !== undefined ) texture.minFilter = parseConstant( data.minFilter, TEXTURE_FILTER );
    				if ( data.magFilter !== undefined ) texture.magFilter = parseConstant( data.magFilter, TEXTURE_FILTER );
    				if ( data.anisotropy !== undefined ) texture.anisotropy = data.anisotropy;

    				if ( data.flipY !== undefined ) texture.flipY = data.flipY;

    				if ( data.premultiplyAlpha !== undefined ) texture.premultiplyAlpha = data.premultiplyAlpha;
    				if ( data.unpackAlignment !== undefined ) texture.unpackAlignment = data.unpackAlignment;

    				if ( data.userData !== undefined ) texture.userData = data.userData;

    				textures[ data.uuid ] = texture;

    			}

    		}

    		return textures;

    	}

    	parseObject( data, geometries, materials, textures, animations ) {

    		let object;

    		function getGeometry( name ) {

    			if ( geometries[ name ] === undefined ) {

    				console.warn( 'THREE.ObjectLoader: Undefined geometry', name );

    			}

    			return geometries[ name ];

    		}

    		function getMaterial( name ) {

    			if ( name === undefined ) return undefined;

    			if ( Array.isArray( name ) ) {

    				const array = [];

    				for ( let i = 0, l = name.length; i < l; i ++ ) {

    					const uuid = name[ i ];

    					if ( materials[ uuid ] === undefined ) {

    						console.warn( 'THREE.ObjectLoader: Undefined material', uuid );

    					}

    					array.push( materials[ uuid ] );

    				}

    				return array;

    			}

    			if ( materials[ name ] === undefined ) {

    				console.warn( 'THREE.ObjectLoader: Undefined material', name );

    			}

    			return materials[ name ];

    		}

    		function getTexture( uuid ) {

    			if ( textures[ uuid ] === undefined ) {

    				console.warn( 'THREE.ObjectLoader: Undefined texture', uuid );

    			}

    			return textures[ uuid ];

    		}

    		let geometry, material;

    		switch ( data.type ) {

    			case 'Scene':

    				object = new Scene();

    				if ( data.background !== undefined ) {

    					if ( Number.isInteger( data.background ) ) {

    						object.background = new Color( data.background );

    					} else {

    						object.background = getTexture( data.background );

    					}

    				}

    				if ( data.environment !== undefined ) {

    					object.environment = getTexture( data.environment );

    				}

    				if ( data.fog !== undefined ) {

    					if ( data.fog.type === 'Fog' ) {

    						object.fog = new Fog( data.fog.color, data.fog.near, data.fog.far );

    					} else if ( data.fog.type === 'FogExp2' ) {

    						object.fog = new FogExp2( data.fog.color, data.fog.density );

    					}

    				}

    				break;

    			case 'PerspectiveCamera':

    				object = new PerspectiveCamera( data.fov, data.aspect, data.near, data.far );

    				if ( data.focus !== undefined ) object.focus = data.focus;
    				if ( data.zoom !== undefined ) object.zoom = data.zoom;
    				if ( data.filmGauge !== undefined ) object.filmGauge = data.filmGauge;
    				if ( data.filmOffset !== undefined ) object.filmOffset = data.filmOffset;
    				if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );

    				break;

    			case 'OrthographicCamera':

    				object = new OrthographicCamera( data.left, data.right, data.top, data.bottom, data.near, data.far );

    				if ( data.zoom !== undefined ) object.zoom = data.zoom;
    				if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );

    				break;

    			case 'AmbientLight':

    				object = new AmbientLight( data.color, data.intensity );

    				break;

    			case 'DirectionalLight':

    				object = new DirectionalLight( data.color, data.intensity );

    				break;

    			case 'PointLight':

    				object = new PointLight( data.color, data.intensity, data.distance, data.decay );

    				break;

    			case 'RectAreaLight':

    				object = new RectAreaLight( data.color, data.intensity, data.width, data.height );

    				break;

    			case 'SpotLight':

    				object = new SpotLight( data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay );

    				break;

    			case 'HemisphereLight':

    				object = new HemisphereLight( data.color, data.groundColor, data.intensity );

    				break;

    			case 'LightProbe':

    				object = new LightProbe().fromJSON( data );

    				break;

    			case 'SkinnedMesh':

    				geometry = getGeometry( data.geometry );
    			 	material = getMaterial( data.material );

    				object = new SkinnedMesh( geometry, material );

    				if ( data.bindMode !== undefined ) object.bindMode = data.bindMode;
    				if ( data.bindMatrix !== undefined ) object.bindMatrix.fromArray( data.bindMatrix );
    				if ( data.skeleton !== undefined ) object.skeleton = data.skeleton;

    				break;

    			case 'Mesh':

    				geometry = getGeometry( data.geometry );
    				material = getMaterial( data.material );

    				object = new Mesh( geometry, material );

    				break;

    			case 'InstancedMesh':

    				geometry = getGeometry( data.geometry );
    				material = getMaterial( data.material );
    				const count = data.count;
    				const instanceMatrix = data.instanceMatrix;
    				const instanceColor = data.instanceColor;

    				object = new InstancedMesh( geometry, material, count );
    				object.instanceMatrix = new InstancedBufferAttribute( new Float32Array( instanceMatrix.array ), 16 );
    				if ( instanceColor !== undefined ) object.instanceColor = new InstancedBufferAttribute( new Float32Array( instanceColor.array ), instanceColor.itemSize );

    				break;

    			case 'LOD':

    				object = new LOD();

    				break;

    			case 'Line':

    				object = new Line( getGeometry( data.geometry ), getMaterial( data.material ) );

    				break;

    			case 'LineLoop':

    				object = new LineLoop( getGeometry( data.geometry ), getMaterial( data.material ) );

    				break;

    			case 'LineSegments':

    				object = new LineSegments( getGeometry( data.geometry ), getMaterial( data.material ) );

    				break;

    			case 'PointCloud':
    			case 'Points':

    				object = new Points( getGeometry( data.geometry ), getMaterial( data.material ) );

    				break;

    			case 'Sprite':

    				object = new Sprite( getMaterial( data.material ) );

    				break;

    			case 'Group':

    				object = new Group();

    				break;

    			case 'Bone':

    				object = new Bone();

    				break;

    			default:

    				object = new Object3D();

    		}

    		object.uuid = data.uuid;

    		if ( data.name !== undefined ) object.name = data.name;

    		if ( data.matrix !== undefined ) {

    			object.matrix.fromArray( data.matrix );

    			if ( data.matrixAutoUpdate !== undefined ) object.matrixAutoUpdate = data.matrixAutoUpdate;
    			if ( object.matrixAutoUpdate ) object.matrix.decompose( object.position, object.quaternion, object.scale );

    		} else {

    			if ( data.position !== undefined ) object.position.fromArray( data.position );
    			if ( data.rotation !== undefined ) object.rotation.fromArray( data.rotation );
    			if ( data.quaternion !== undefined ) object.quaternion.fromArray( data.quaternion );
    			if ( data.scale !== undefined ) object.scale.fromArray( data.scale );

    		}

    		if ( data.castShadow !== undefined ) object.castShadow = data.castShadow;
    		if ( data.receiveShadow !== undefined ) object.receiveShadow = data.receiveShadow;

    		if ( data.shadow ) {

    			if ( data.shadow.bias !== undefined ) object.shadow.bias = data.shadow.bias;
    			if ( data.shadow.normalBias !== undefined ) object.shadow.normalBias = data.shadow.normalBias;
    			if ( data.shadow.radius !== undefined ) object.shadow.radius = data.shadow.radius;
    			if ( data.shadow.mapSize !== undefined ) object.shadow.mapSize.fromArray( data.shadow.mapSize );
    			if ( data.shadow.camera !== undefined ) object.shadow.camera = this.parseObject( data.shadow.camera );

    		}

    		if ( data.visible !== undefined ) object.visible = data.visible;
    		if ( data.frustumCulled !== undefined ) object.frustumCulled = data.frustumCulled;
    		if ( data.renderOrder !== undefined ) object.renderOrder = data.renderOrder;
    		if ( data.userData !== undefined ) object.userData = data.userData;
    		if ( data.layers !== undefined ) object.layers.mask = data.layers;

    		if ( data.children !== undefined ) {

    			const children = data.children;

    			for ( let i = 0; i < children.length; i ++ ) {

    				object.add( this.parseObject( children[ i ], geometries, materials, textures, animations ) );

    			}

    		}

    		if ( data.animations !== undefined ) {

    			const objectAnimations = data.animations;

    			for ( let i = 0; i < objectAnimations.length; i ++ ) {

    				const uuid = objectAnimations[ i ];

    				object.animations.push( animations[ uuid ] );

    			}

    		}

    		if ( data.type === 'LOD' ) {

    			if ( data.autoUpdate !== undefined ) object.autoUpdate = data.autoUpdate;

    			const levels = data.levels;

    			for ( let l = 0; l < levels.length; l ++ ) {

    				const level = levels[ l ];
    				const child = object.getObjectByProperty( 'uuid', level.object );

    				if ( child !== undefined ) {

    					object.addLevel( child, level.distance );

    				}

    			}

    		}

    		return object;

    	}

    	bindSkeletons( object, skeletons ) {

    		if ( Object.keys( skeletons ).length === 0 ) return;

    		object.traverse( function ( child ) {

    			if ( child.isSkinnedMesh === true && child.skeleton !== undefined ) {

    				const skeleton = skeletons[ child.skeleton ];

    				if ( skeleton === undefined ) {

    					console.warn( 'THREE.ObjectLoader: No skeleton found with UUID:', child.skeleton );

    				} else {

    					child.bind( skeleton, child.bindMatrix );

    				}

    			}

    		} );

    	}

    }

    const TEXTURE_MAPPING = {
    	UVMapping: UVMapping,
    	CubeReflectionMapping: CubeReflectionMapping,
    	CubeRefractionMapping: CubeRefractionMapping,
    	EquirectangularReflectionMapping: EquirectangularReflectionMapping,
    	EquirectangularRefractionMapping: EquirectangularRefractionMapping,
    	CubeUVReflectionMapping: CubeUVReflectionMapping
    };

    const TEXTURE_WRAPPING = {
    	RepeatWrapping: RepeatWrapping,
    	ClampToEdgeWrapping: ClampToEdgeWrapping,
    	MirroredRepeatWrapping: MirroredRepeatWrapping
    };

    const TEXTURE_FILTER = {
    	NearestFilter: NearestFilter,
    	NearestMipmapNearestFilter: NearestMipmapNearestFilter,
    	NearestMipmapLinearFilter: NearestMipmapLinearFilter,
    	LinearFilter: LinearFilter,
    	LinearMipmapNearestFilter: LinearMipmapNearestFilter,
    	LinearMipmapLinearFilter: LinearMipmapLinearFilter
    };

    class ImageBitmapLoader extends Loader {

    	constructor( manager ) {

    		super( manager );

    		this.isImageBitmapLoader = true;

    		if ( typeof createImageBitmap === 'undefined' ) {

    			console.warn( 'THREE.ImageBitmapLoader: createImageBitmap() not supported.' );

    		}

    		if ( typeof fetch === 'undefined' ) {

    			console.warn( 'THREE.ImageBitmapLoader: fetch() not supported.' );

    		}

    		this.options = { premultiplyAlpha: 'none' };

    	}

    	setOptions( options ) {

    		this.options = options;

    		return this;

    	}

    	load( url, onLoad, onProgress, onError ) {

    		if ( url === undefined ) url = '';

    		if ( this.path !== undefined ) url = this.path + url;

    		url = this.manager.resolveURL( url );

    		const scope = this;

    		const cached = Cache.get( url );

    		if ( cached !== undefined ) {

    			scope.manager.itemStart( url );

    			setTimeout( function () {

    				if ( onLoad ) onLoad( cached );

    				scope.manager.itemEnd( url );

    			}, 0 );

    			return cached;

    		}

    		const fetchOptions = {};
    		fetchOptions.credentials = ( this.crossOrigin === 'anonymous' ) ? 'same-origin' : 'include';
    		fetchOptions.headers = this.requestHeader;

    		fetch( url, fetchOptions ).then( function ( res ) {

    			return res.blob();

    		} ).then( function ( blob ) {

    			return createImageBitmap( blob, Object.assign( scope.options, { colorSpaceConversion: 'none' } ) );

    		} ).then( function ( imageBitmap ) {

    			Cache.add( url, imageBitmap );

    			if ( onLoad ) onLoad( imageBitmap );

    			scope.manager.itemEnd( url );

    		} ).catch( function ( e ) {

    			if ( onError ) onError( e );

    			scope.manager.itemError( url );
    			scope.manager.itemEnd( url );

    		} );

    		scope.manager.itemStart( url );

    	}

    }

    let _context;

    const AudioContext = {

    	getContext: function () {

    		if ( _context === undefined ) {

    			_context = new ( window.AudioContext || window.webkitAudioContext )();

    		}

    		return _context;

    	},

    	setContext: function ( value ) {

    		_context = value;

    	}

    };

    class AudioLoader extends Loader {

    	constructor( manager ) {

    		super( manager );

    	}

    	load( url, onLoad, onProgress, onError ) {

    		const scope = this;

    		const loader = new FileLoader( this.manager );
    		loader.setResponseType( 'arraybuffer' );
    		loader.setPath( this.path );
    		loader.setRequestHeader( this.requestHeader );
    		loader.setWithCredentials( this.withCredentials );
    		loader.load( url, function ( buffer ) {

    			try {

    				// Create a copy of the buffer. The `decodeAudioData` method
    				// detaches the buffer when complete, preventing reuse.
    				const bufferCopy = buffer.slice( 0 );

    				const context = AudioContext.getContext();
    				context.decodeAudioData( bufferCopy, function ( audioBuffer ) {

    					onLoad( audioBuffer );

    				} );

    			} catch ( e ) {

    				if ( onError ) {

    					onError( e );

    				} else {

    					console.error( e );

    				}

    				scope.manager.itemError( url );

    			}

    		}, onProgress, onError );

    	}

    }

    class HemisphereLightProbe extends LightProbe {

    	constructor( skyColor, groundColor, intensity = 1 ) {

    		super( undefined, intensity );

    		this.isHemisphereLightProbe = true;

    		const color1 = new Color().set( skyColor );
    		const color2 = new Color().set( groundColor );

    		const sky = new Vector3( color1.r, color1.g, color1.b );
    		const ground = new Vector3( color2.r, color2.g, color2.b );

    		// without extra factor of PI in the shader, should = 1 / Math.sqrt( Math.PI );
    		const c0 = Math.sqrt( Math.PI );
    		const c1 = c0 * Math.sqrt( 0.75 );

    		this.sh.coefficients[ 0 ].copy( sky ).add( ground ).multiplyScalar( c0 );
    		this.sh.coefficients[ 1 ].copy( sky ).sub( ground ).multiplyScalar( c1 );

    	}

    }

    class AmbientLightProbe extends LightProbe {

    	constructor( color, intensity = 1 ) {

    		super( undefined, intensity );

    		this.isAmbientLightProbe = true;

    		const color1 = new Color().set( color );

    		// without extra factor of PI in the shader, would be 2 / Math.sqrt( Math.PI );
    		this.sh.coefficients[ 0 ].set( color1.r, color1.g, color1.b ).multiplyScalar( 2 * Math.sqrt( Math.PI ) );

    	}

    }

    const _eyeRight = /*@__PURE__*/ new Matrix4();
    const _eyeLeft = /*@__PURE__*/ new Matrix4();
    const _projectionMatrix = /*@__PURE__*/ new Matrix4();

    class StereoCamera {

    	constructor() {

    		this.type = 'StereoCamera';

    		this.aspect = 1;

    		this.eyeSep = 0.064;

    		this.cameraL = new PerspectiveCamera();
    		this.cameraL.layers.enable( 1 );
    		this.cameraL.matrixAutoUpdate = false;

    		this.cameraR = new PerspectiveCamera();
    		this.cameraR.layers.enable( 2 );
    		this.cameraR.matrixAutoUpdate = false;

    		this._cache = {
    			focus: null,
    			fov: null,
    			aspect: null,
    			near: null,
    			far: null,
    			zoom: null,
    			eyeSep: null
    		};

    	}

    	update( camera ) {

    		const cache = this._cache;

    		const needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov ||
    			cache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near ||
    			cache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;

    		if ( needsUpdate ) {

    			cache.focus = camera.focus;
    			cache.fov = camera.fov;
    			cache.aspect = camera.aspect * this.aspect;
    			cache.near = camera.near;
    			cache.far = camera.far;
    			cache.zoom = camera.zoom;
    			cache.eyeSep = this.eyeSep;

    			// Off-axis stereoscopic effect based on
    			// http://paulbourke.net/stereographics/stereorender/

    			_projectionMatrix.copy( camera.projectionMatrix );
    			const eyeSepHalf = cache.eyeSep / 2;
    			const eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;
    			const ymax = ( cache.near * Math.tan( DEG2RAD * cache.fov * 0.5 ) ) / cache.zoom;
    			let xmin, xmax;

    			// translate xOffset

    			_eyeLeft.elements[ 12 ] = - eyeSepHalf;
    			_eyeRight.elements[ 12 ] = eyeSepHalf;

    			// for left eye

    			xmin = - ymax * cache.aspect + eyeSepOnProjection;
    			xmax = ymax * cache.aspect + eyeSepOnProjection;

    			_projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
    			_projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );

    			this.cameraL.projectionMatrix.copy( _projectionMatrix );

    			// for right eye

    			xmin = - ymax * cache.aspect - eyeSepOnProjection;
    			xmax = ymax * cache.aspect - eyeSepOnProjection;

    			_projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
    			_projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );

    			this.cameraR.projectionMatrix.copy( _projectionMatrix );

    		}

    		this.cameraL.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeLeft );
    		this.cameraR.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeRight );

    	}

    }

    class Clock {

    	constructor( autoStart = true ) {

    		this.autoStart = autoStart;

    		this.startTime = 0;
    		this.oldTime = 0;
    		this.elapsedTime = 0;

    		this.running = false;

    	}

    	start() {

    		this.startTime = now();

    		this.oldTime = this.startTime;
    		this.elapsedTime = 0;
    		this.running = true;

    	}

    	stop() {

    		this.getElapsedTime();
    		this.running = false;
    		this.autoStart = false;

    	}

    	getElapsedTime() {

    		this.getDelta();
    		return this.elapsedTime;

    	}

    	getDelta() {

    		let diff = 0;

    		if ( this.autoStart && ! this.running ) {

    			this.start();
    			return 0;

    		}

    		if ( this.running ) {

    			const newTime = now();

    			diff = ( newTime - this.oldTime ) / 1000;
    			this.oldTime = newTime;

    			this.elapsedTime += diff;

    		}

    		return diff;

    	}

    }

    function now() {

    	return ( typeof performance === 'undefined' ? Date : performance ).now(); // see #10732

    }

    const _position$1 = /*@__PURE__*/ new Vector3();
    const _quaternion$1 = /*@__PURE__*/ new Quaternion();
    const _scale$1 = /*@__PURE__*/ new Vector3();
    const _orientation$1 = /*@__PURE__*/ new Vector3();

    class AudioListener extends Object3D {

    	constructor() {

    		super();

    		this.type = 'AudioListener';

    		this.context = AudioContext.getContext();

    		this.gain = this.context.createGain();
    		this.gain.connect( this.context.destination );

    		this.filter = null;

    		this.timeDelta = 0;

    		// private

    		this._clock = new Clock();

    	}

    	getInput() {

    		return this.gain;

    	}

    	removeFilter() {

    		if ( this.filter !== null ) {

    			this.gain.disconnect( this.filter );
    			this.filter.disconnect( this.context.destination );
    			this.gain.connect( this.context.destination );
    			this.filter = null;

    		}

    		return this;

    	}

    	getFilter() {

    		return this.filter;

    	}

    	setFilter( value ) {

    		if ( this.filter !== null ) {

    			this.gain.disconnect( this.filter );
    			this.filter.disconnect( this.context.destination );

    		} else {

    			this.gain.disconnect( this.context.destination );

    		}

    		this.filter = value;
    		this.gain.connect( this.filter );
    		this.filter.connect( this.context.destination );

    		return this;

    	}

    	getMasterVolume() {

    		return this.gain.gain.value;

    	}

    	setMasterVolume( value ) {

    		this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );

    		return this;

    	}

    	updateMatrixWorld( force ) {

    		super.updateMatrixWorld( force );

    		const listener = this.context.listener;
    		const up = this.up;

    		this.timeDelta = this._clock.getDelta();

    		this.matrixWorld.decompose( _position$1, _quaternion$1, _scale$1 );

    		_orientation$1.set( 0, 0, - 1 ).applyQuaternion( _quaternion$1 );

    		if ( listener.positionX ) {

    			// code path for Chrome (see #14393)

    			const endTime = this.context.currentTime + this.timeDelta;

    			listener.positionX.linearRampToValueAtTime( _position$1.x, endTime );
    			listener.positionY.linearRampToValueAtTime( _position$1.y, endTime );
    			listener.positionZ.linearRampToValueAtTime( _position$1.z, endTime );
    			listener.forwardX.linearRampToValueAtTime( _orientation$1.x, endTime );
    			listener.forwardY.linearRampToValueAtTime( _orientation$1.y, endTime );
    			listener.forwardZ.linearRampToValueAtTime( _orientation$1.z, endTime );
    			listener.upX.linearRampToValueAtTime( up.x, endTime );
    			listener.upY.linearRampToValueAtTime( up.y, endTime );
    			listener.upZ.linearRampToValueAtTime( up.z, endTime );

    		} else {

    			listener.setPosition( _position$1.x, _position$1.y, _position$1.z );
    			listener.setOrientation( _orientation$1.x, _orientation$1.y, _orientation$1.z, up.x, up.y, up.z );

    		}

    	}

    }

    class Audio extends Object3D {

    	constructor( listener ) {

    		super();

    		this.type = 'Audio';

    		this.listener = listener;
    		this.context = listener.context;

    		this.gain = this.context.createGain();
    		this.gain.connect( listener.getInput() );

    		this.autoplay = false;

    		this.buffer = null;
    		this.detune = 0;
    		this.loop = false;
    		this.loopStart = 0;
    		this.loopEnd = 0;
    		this.offset = 0;
    		this.duration = undefined;
    		this.playbackRate = 1;
    		this.isPlaying = false;
    		this.hasPlaybackControl = true;
    		this.source = null;
    		this.sourceType = 'empty';

    		this._startedAt = 0;
    		this._progress = 0;
    		this._connected = false;

    		this.filters = [];

    	}

    	getOutput() {

    		return this.gain;

    	}

    	setNodeSource( audioNode ) {

    		this.hasPlaybackControl = false;
    		this.sourceType = 'audioNode';
    		this.source = audioNode;
    		this.connect();

    		return this;

    	}

    	setMediaElementSource( mediaElement ) {

    		this.hasPlaybackControl = false;
    		this.sourceType = 'mediaNode';
    		this.source = this.context.createMediaElementSource( mediaElement );
    		this.connect();

    		return this;

    	}

    	setMediaStreamSource( mediaStream ) {

    		this.hasPlaybackControl = false;
    		this.sourceType = 'mediaStreamNode';
    		this.source = this.context.createMediaStreamSource( mediaStream );
    		this.connect();

    		return this;

    	}

    	setBuffer( audioBuffer ) {

    		this.buffer = audioBuffer;
    		this.sourceType = 'buffer';

    		if ( this.autoplay ) this.play();

    		return this;

    	}

    	play( delay = 0 ) {

    		if ( this.isPlaying === true ) {

    			console.warn( 'THREE.Audio: Audio is already playing.' );
    			return;

    		}

    		if ( this.hasPlaybackControl === false ) {

    			console.warn( 'THREE.Audio: this Audio has no playback control.' );
    			return;

    		}

    		this._startedAt = this.context.currentTime + delay;

    		const source = this.context.createBufferSource();
    		source.buffer = this.buffer;
    		source.loop = this.loop;
    		source.loopStart = this.loopStart;
    		source.loopEnd = this.loopEnd;
    		source.onended = this.onEnded.bind( this );
    		source.start( this._startedAt, this._progress + this.offset, this.duration );

    		this.isPlaying = true;

    		this.source = source;

    		this.setDetune( this.detune );
    		this.setPlaybackRate( this.playbackRate );

    		return this.connect();

    	}

    	pause() {

    		if ( this.hasPlaybackControl === false ) {

    			console.warn( 'THREE.Audio: this Audio has no playback control.' );
    			return;

    		}

    		if ( this.isPlaying === true ) {

    			// update current progress

    			this._progress += Math.max( this.context.currentTime - this._startedAt, 0 ) * this.playbackRate;

    			if ( this.loop === true ) {

    				// ensure _progress does not exceed duration with looped audios

    				this._progress = this._progress % ( this.duration || this.buffer.duration );

    			}

    			this.source.stop();
    			this.source.onended = null;

    			this.isPlaying = false;

    		}

    		return this;

    	}

    	stop() {

    		if ( this.hasPlaybackControl === false ) {

    			console.warn( 'THREE.Audio: this Audio has no playback control.' );
    			return;

    		}

    		this._progress = 0;

    		this.source.stop();
    		this.source.onended = null;
    		this.isPlaying = false;

    		return this;

    	}

    	connect() {

    		if ( this.filters.length > 0 ) {

    			this.source.connect( this.filters[ 0 ] );

    			for ( let i = 1, l = this.filters.length; i < l; i ++ ) {

    				this.filters[ i - 1 ].connect( this.filters[ i ] );

    			}

    			this.filters[ this.filters.length - 1 ].connect( this.getOutput() );

    		} else {

    			this.source.connect( this.getOutput() );

    		}

    		this._connected = true;

    		return this;

    	}

    	disconnect() {

    		if ( this.filters.length > 0 ) {

    			this.source.disconnect( this.filters[ 0 ] );

    			for ( let i = 1, l = this.filters.length; i < l; i ++ ) {

    				this.filters[ i - 1 ].disconnect( this.filters[ i ] );

    			}

    			this.filters[ this.filters.length - 1 ].disconnect( this.getOutput() );

    		} else {

    			this.source.disconnect( this.getOutput() );

    		}

    		this._connected = false;

    		return this;

    	}

    	getFilters() {

    		return this.filters;

    	}

    	setFilters( value ) {

    		if ( ! value ) value = [];

    		if ( this._connected === true ) {

    			this.disconnect();
    			this.filters = value.slice();
    			this.connect();

    		} else {

    			this.filters = value.slice();

    		}

    		return this;

    	}

    	setDetune( value ) {

    		this.detune = value;

    		if ( this.source.detune === undefined ) return; // only set detune when available

    		if ( this.isPlaying === true ) {

    			this.source.detune.setTargetAtTime( this.detune, this.context.currentTime, 0.01 );

    		}

    		return this;

    	}

    	getDetune() {

    		return this.detune;

    	}

    	getFilter() {

    		return this.getFilters()[ 0 ];

    	}

    	setFilter( filter ) {

    		return this.setFilters( filter ? [ filter ] : [] );

    	}

    	setPlaybackRate( value ) {

    		if ( this.hasPlaybackControl === false ) {

    			console.warn( 'THREE.Audio: this Audio has no playback control.' );
    			return;

    		}

    		this.playbackRate = value;

    		if ( this.isPlaying === true ) {

    			this.source.playbackRate.setTargetAtTime( this.playbackRate, this.context.currentTime, 0.01 );

    		}

    		return this;

    	}

    	getPlaybackRate() {

    		return this.playbackRate;

    	}

    	onEnded() {

    		this.isPlaying = false;

    	}

    	getLoop() {

    		if ( this.hasPlaybackControl === false ) {

    			console.warn( 'THREE.Audio: this Audio has no playback control.' );
    			return false;

    		}

    		return this.loop;

    	}

    	setLoop( value ) {

    		if ( this.hasPlaybackControl === false ) {

    			console.warn( 'THREE.Audio: this Audio has no playback control.' );
    			return;

    		}

    		this.loop = value;

    		if ( this.isPlaying === true ) {

    			this.source.loop = this.loop;

    		}

    		return this;

    	}

    	setLoopStart( value ) {

    		this.loopStart = value;

    		return this;

    	}

    	setLoopEnd( value ) {

    		this.loopEnd = value;

    		return this;

    	}

    	getVolume() {

    		return this.gain.gain.value;

    	}

    	setVolume( value ) {

    		this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );

    		return this;

    	}

    }

    const _position = /*@__PURE__*/ new Vector3();
    const _quaternion = /*@__PURE__*/ new Quaternion();
    const _scale = /*@__PURE__*/ new Vector3();
    const _orientation = /*@__PURE__*/ new Vector3();

    class PositionalAudio extends Audio {

    	constructor( listener ) {

    		super( listener );

    		this.panner = this.context.createPanner();
    		this.panner.panningModel = 'HRTF';
    		this.panner.connect( this.gain );

    	}

    	disconnect() {

    		super.disconnect();

    		this.panner.disconnect( this.gain );

    	}

    	getOutput() {

    		return this.panner;

    	}

    	getRefDistance() {

    		return this.panner.refDistance;

    	}

    	setRefDistance( value ) {

    		this.panner.refDistance = value;

    		return this;

    	}

    	getRolloffFactor() {

    		return this.panner.rolloffFactor;

    	}

    	setRolloffFactor( value ) {

    		this.panner.rolloffFactor = value;

    		return this;

    	}

    	getDistanceModel() {

    		return this.panner.distanceModel;

    	}

    	setDistanceModel( value ) {

    		this.panner.distanceModel = value;

    		return this;

    	}

    	getMaxDistance() {

    		return this.panner.maxDistance;

    	}

    	setMaxDistance( value ) {

    		this.panner.maxDistance = value;

    		return this;

    	}

    	setDirectionalCone( coneInnerAngle, coneOuterAngle, coneOuterGain ) {

    		this.panner.coneInnerAngle = coneInnerAngle;
    		this.panner.coneOuterAngle = coneOuterAngle;
    		this.panner.coneOuterGain = coneOuterGain;

    		return this;

    	}

    	updateMatrixWorld( force ) {

    		super.updateMatrixWorld( force );

    		if ( this.hasPlaybackControl === true && this.isPlaying === false ) return;

    		this.matrixWorld.decompose( _position, _quaternion, _scale );

    		_orientation.set( 0, 0, 1 ).applyQuaternion( _quaternion );

    		const panner = this.panner;

    		if ( panner.positionX ) {

    			// code path for Chrome and Firefox (see #14393)

    			const endTime = this.context.currentTime + this.listener.timeDelta;

    			panner.positionX.linearRampToValueAtTime( _position.x, endTime );
    			panner.positionY.linearRampToValueAtTime( _position.y, endTime );
    			panner.positionZ.linearRampToValueAtTime( _position.z, endTime );
    			panner.orientationX.linearRampToValueAtTime( _orientation.x, endTime );
    			panner.orientationY.linearRampToValueAtTime( _orientation.y, endTime );
    			panner.orientationZ.linearRampToValueAtTime( _orientation.z, endTime );

    		} else {

    			panner.setPosition( _position.x, _position.y, _position.z );
    			panner.setOrientation( _orientation.x, _orientation.y, _orientation.z );

    		}

    	}

    }

    class AudioAnalyser {

    	constructor( audio, fftSize = 2048 ) {

    		this.analyser = audio.context.createAnalyser();
    		this.analyser.fftSize = fftSize;

    		this.data = new Uint8Array( this.analyser.frequencyBinCount );

    		audio.getOutput().connect( this.analyser );

    	}


    	getFrequencyData() {

    		this.analyser.getByteFrequencyData( this.data );

    		return this.data;

    	}

    	getAverageFrequency() {

    		let value = 0;
    		const data = this.getFrequencyData();

    		for ( let i = 0; i < data.length; i ++ ) {

    			value += data[ i ];

    		}

    		return value / data.length;

    	}

    }

    class PropertyMixer {

    	constructor( binding, typeName, valueSize ) {

    		this.binding = binding;
    		this.valueSize = valueSize;

    		let mixFunction,
    			mixFunctionAdditive,
    			setIdentity;

    		// buffer layout: [ incoming | accu0 | accu1 | orig | addAccu | (optional work) ]
    		//
    		// interpolators can use .buffer as their .result
    		// the data then goes to 'incoming'
    		//
    		// 'accu0' and 'accu1' are used frame-interleaved for
    		// the cumulative result and are compared to detect
    		// changes
    		//
    		// 'orig' stores the original state of the property
    		//
    		// 'add' is used for additive cumulative results
    		//
    		// 'work' is optional and is only present for quaternion types. It is used
    		// to store intermediate quaternion multiplication results

    		switch ( typeName ) {

    			case 'quaternion':
    				mixFunction = this._slerp;
    				mixFunctionAdditive = this._slerpAdditive;
    				setIdentity = this._setAdditiveIdentityQuaternion;

    				this.buffer = new Float64Array( valueSize * 6 );
    				this._workIndex = 5;
    				break;

    			case 'string':
    			case 'bool':
    				mixFunction = this._select;

    				// Use the regular mix function and for additive on these types,
    				// additive is not relevant for non-numeric types
    				mixFunctionAdditive = this._select;

    				setIdentity = this._setAdditiveIdentityOther;

    				this.buffer = new Array( valueSize * 5 );
    				break;

    			default:
    				mixFunction = this._lerp;
    				mixFunctionAdditive = this._lerpAdditive;
    				setIdentity = this._setAdditiveIdentityNumeric;

    				this.buffer = new Float64Array( valueSize * 5 );

    		}

    		this._mixBufferRegion = mixFunction;
    		this._mixBufferRegionAdditive = mixFunctionAdditive;
    		this._setIdentity = setIdentity;
    		this._origIndex = 3;
    		this._addIndex = 4;

    		this.cumulativeWeight = 0;
    		this.cumulativeWeightAdditive = 0;

    		this.useCount = 0;
    		this.referenceCount = 0;

    	}

    	// accumulate data in the 'incoming' region into 'accu<i>'
    	accumulate( accuIndex, weight ) {

    		// note: happily accumulating nothing when weight = 0, the caller knows
    		// the weight and shouldn't have made the call in the first place

    		const buffer = this.buffer,
    			stride = this.valueSize,
    			offset = accuIndex * stride + stride;

    		let currentWeight = this.cumulativeWeight;

    		if ( currentWeight === 0 ) {

    			// accuN := incoming * weight

    			for ( let i = 0; i !== stride; ++ i ) {

    				buffer[ offset + i ] = buffer[ i ];

    			}

    			currentWeight = weight;

    		} else {

    			// accuN := accuN + incoming * weight

    			currentWeight += weight;
    			const mix = weight / currentWeight;
    			this._mixBufferRegion( buffer, offset, 0, mix, stride );

    		}

    		this.cumulativeWeight = currentWeight;

    	}

    	// accumulate data in the 'incoming' region into 'add'
    	accumulateAdditive( weight ) {

    		const buffer = this.buffer,
    			stride = this.valueSize,
    			offset = stride * this._addIndex;

    		if ( this.cumulativeWeightAdditive === 0 ) {

    			// add = identity

    			this._setIdentity();

    		}

    		// add := add + incoming * weight

    		this._mixBufferRegionAdditive( buffer, offset, 0, weight, stride );
    		this.cumulativeWeightAdditive += weight;

    	}

    	// apply the state of 'accu<i>' to the binding when accus differ
    	apply( accuIndex ) {

    		const stride = this.valueSize,
    			buffer = this.buffer,
    			offset = accuIndex * stride + stride,

    			weight = this.cumulativeWeight,
    			weightAdditive = this.cumulativeWeightAdditive,

    			binding = this.binding;

    		this.cumulativeWeight = 0;
    		this.cumulativeWeightAdditive = 0;

    		if ( weight < 1 ) {

    			// accuN := accuN + original * ( 1 - cumulativeWeight )

    			const originalValueOffset = stride * this._origIndex;

    			this._mixBufferRegion(
    				buffer, offset, originalValueOffset, 1 - weight, stride );

    		}

    		if ( weightAdditive > 0 ) {

    			// accuN := accuN + additive accuN

    			this._mixBufferRegionAdditive( buffer, offset, this._addIndex * stride, 1, stride );

    		}

    		for ( let i = stride, e = stride + stride; i !== e; ++ i ) {

    			if ( buffer[ i ] !== buffer[ i + stride ] ) {

    				// value has changed -> update scene graph

    				binding.setValue( buffer, offset );
    				break;

    			}

    		}

    	}

    	// remember the state of the bound property and copy it to both accus
    	saveOriginalState() {

    		const binding = this.binding;

    		const buffer = this.buffer,
    			stride = this.valueSize,

    			originalValueOffset = stride * this._origIndex;

    		binding.getValue( buffer, originalValueOffset );

    		// accu[0..1] := orig -- initially detect changes against the original
    		for ( let i = stride, e = originalValueOffset; i !== e; ++ i ) {

    			buffer[ i ] = buffer[ originalValueOffset + ( i % stride ) ];

    		}

    		// Add to identity for additive
    		this._setIdentity();

    		this.cumulativeWeight = 0;
    		this.cumulativeWeightAdditive = 0;

    	}

    	// apply the state previously taken via 'saveOriginalState' to the binding
    	restoreOriginalState() {

    		const originalValueOffset = this.valueSize * 3;
    		this.binding.setValue( this.buffer, originalValueOffset );

    	}

    	_setAdditiveIdentityNumeric() {

    		const startIndex = this._addIndex * this.valueSize;
    		const endIndex = startIndex + this.valueSize;

    		for ( let i = startIndex; i < endIndex; i ++ ) {

    			this.buffer[ i ] = 0;

    		}

    	}

    	_setAdditiveIdentityQuaternion() {

    		this._setAdditiveIdentityNumeric();
    		this.buffer[ this._addIndex * this.valueSize + 3 ] = 1;

    	}

    	_setAdditiveIdentityOther() {

    		const startIndex = this._origIndex * this.valueSize;
    		const targetIndex = this._addIndex * this.valueSize;

    		for ( let i = 0; i < this.valueSize; i ++ ) {

    			this.buffer[ targetIndex + i ] = this.buffer[ startIndex + i ];

    		}

    	}


    	// mix functions

    	_select( buffer, dstOffset, srcOffset, t, stride ) {

    		if ( t >= 0.5 ) {

    			for ( let i = 0; i !== stride; ++ i ) {

    				buffer[ dstOffset + i ] = buffer[ srcOffset + i ];

    			}

    		}

    	}

    	_slerp( buffer, dstOffset, srcOffset, t ) {

    		Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t );

    	}

    	_slerpAdditive( buffer, dstOffset, srcOffset, t, stride ) {

    		const workOffset = this._workIndex * stride;

    		// Store result in intermediate buffer offset
    		Quaternion.multiplyQuaternionsFlat( buffer, workOffset, buffer, dstOffset, buffer, srcOffset );

    		// Slerp to the intermediate result
    		Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t );

    	}

    	_lerp( buffer, dstOffset, srcOffset, t, stride ) {

    		const s = 1 - t;

    		for ( let i = 0; i !== stride; ++ i ) {

    			const j = dstOffset + i;

    			buffer[ j ] = buffer[ j ] * s + buffer[ srcOffset + i ] * t;

    		}

    	}

    	_lerpAdditive( buffer, dstOffset, srcOffset, t, stride ) {

    		for ( let i = 0; i !== stride; ++ i ) {

    			const j = dstOffset + i;

    			buffer[ j ] = buffer[ j ] + buffer[ srcOffset + i ] * t;

    		}

    	}

    }

    // Characters [].:/ are reserved for track binding syntax.
    const _RESERVED_CHARS_RE = '\\[\\]\\.:\\/';
    const _reservedRe = new RegExp( '[' + _RESERVED_CHARS_RE + ']', 'g' );

    // Attempts to allow node names from any language. ES5's `\w` regexp matches
    // only latin characters, and the unicode \p{L} is not yet supported. So
    // instead, we exclude reserved characters and match everything else.
    const _wordChar = '[^' + _RESERVED_CHARS_RE + ']';
    const _wordCharOrDot = '[^' + _RESERVED_CHARS_RE.replace( '\\.', '' ) + ']';

    // Parent directories, delimited by '/' or ':'. Currently unused, but must
    // be matched to parse the rest of the track name.
    const _directoryRe = /*@__PURE__*/ /((?:WC+[\/:])*)/.source.replace( 'WC', _wordChar );

    // Target node. May contain word characters (a-zA-Z0-9_) and '.' or '-'.
    const _nodeRe = /*@__PURE__*/ /(WCOD+)?/.source.replace( 'WCOD', _wordCharOrDot );

    // Object on target node, and accessor. May not contain reserved
    // characters. Accessor may contain any character except closing bracket.
    const _objectRe = /*@__PURE__*/ /(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace( 'WC', _wordChar );

    // Property and accessor. May not contain reserved characters. Accessor may
    // contain any non-bracket characters.
    const _propertyRe = /*@__PURE__*/ /\.(WC+)(?:\[(.+)\])?/.source.replace( 'WC', _wordChar );

    const _trackRe = new RegExp( ''
    	+ '^'
    	+ _directoryRe
    	+ _nodeRe
    	+ _objectRe
    	+ _propertyRe
    	+ '$'
    );

    const _supportedObjectNames = [ 'material', 'materials', 'bones', 'map' ];

    class Composite {

    	constructor( targetGroup, path, optionalParsedPath ) {

    		const parsedPath = optionalParsedPath || PropertyBinding.parseTrackName( path );

    		this._targetGroup = targetGroup;
    		this._bindings = targetGroup.subscribe_( path, parsedPath );

    	}

    	getValue( array, offset ) {

    		this.bind(); // bind all binding

    		const firstValidIndex = this._targetGroup.nCachedObjects_,
    			binding = this._bindings[ firstValidIndex ];

    		// and only call .getValue on the first
    		if ( binding !== undefined ) binding.getValue( array, offset );

    	}

    	setValue( array, offset ) {

    		const bindings = this._bindings;

    		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {

    			bindings[ i ].setValue( array, offset );

    		}

    	}

    	bind() {

    		const bindings = this._bindings;

    		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {

    			bindings[ i ].bind();

    		}

    	}

    	unbind() {

    		const bindings = this._bindings;

    		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {

    			bindings[ i ].unbind();

    		}

    	}

    }

    // Note: This class uses a State pattern on a per-method basis:
    // 'bind' sets 'this.getValue' / 'setValue' and shadows the
    // prototype version of these methods with one that represents
    // the bound state. When the property is not found, the methods
    // become no-ops.
    class PropertyBinding {

    	constructor( rootNode, path, parsedPath ) {

    		this.path = path;
    		this.parsedPath = parsedPath || PropertyBinding.parseTrackName( path );

    		this.node = PropertyBinding.findNode( rootNode, this.parsedPath.nodeName ) || rootNode;

    		this.rootNode = rootNode;

    		// initial state of these methods that calls 'bind'
    		this.getValue = this._getValue_unbound;
    		this.setValue = this._setValue_unbound;

    	}


    	static create( root, path, parsedPath ) {

    		if ( ! ( root && root.isAnimationObjectGroup ) ) {

    			return new PropertyBinding( root, path, parsedPath );

    		} else {

    			return new PropertyBinding.Composite( root, path, parsedPath );

    		}

    	}

    	/**
    	 * Replaces spaces with underscores and removes unsupported characters from
    	 * node names, to ensure compatibility with parseTrackName().
    	 *
    	 * @param {string} name Node name to be sanitized.
    	 * @return {string}
    	 */
    	static sanitizeNodeName( name ) {

    		return name.replace( /\s/g, '_' ).replace( _reservedRe, '' );

    	}

    	static parseTrackName( trackName ) {

    		const matches = _trackRe.exec( trackName );

    		if ( matches === null ) {

    			throw new Error( 'PropertyBinding: Cannot parse trackName: ' + trackName );

    		}

    		const results = {
    			// directoryName: matches[ 1 ], // (tschw) currently unused
    			nodeName: matches[ 2 ],
    			objectName: matches[ 3 ],
    			objectIndex: matches[ 4 ],
    			propertyName: matches[ 5 ], // required
    			propertyIndex: matches[ 6 ]
    		};

    		const lastDot = results.nodeName && results.nodeName.lastIndexOf( '.' );

    		if ( lastDot !== undefined && lastDot !== - 1 ) {

    			const objectName = results.nodeName.substring( lastDot + 1 );

    			// Object names must be checked against an allowlist. Otherwise, there
    			// is no way to parse 'foo.bar.baz': 'baz' must be a property, but
    			// 'bar' could be the objectName, or part of a nodeName (which can
    			// include '.' characters).
    			if ( _supportedObjectNames.indexOf( objectName ) !== - 1 ) {

    				results.nodeName = results.nodeName.substring( 0, lastDot );
    				results.objectName = objectName;

    			}

    		}

    		if ( results.propertyName === null || results.propertyName.length === 0 ) {

    			throw new Error( 'PropertyBinding: can not parse propertyName from trackName: ' + trackName );

    		}

    		return results;

    	}

    	static findNode( root, nodeName ) {

    		if ( nodeName === undefined || nodeName === '' || nodeName === '.' || nodeName === - 1 || nodeName === root.name || nodeName === root.uuid ) {

    			return root;

    		}

    		// search into skeleton bones.
    		if ( root.skeleton ) {

    			const bone = root.skeleton.getBoneByName( nodeName );

    			if ( bone !== undefined ) {

    				return bone;

    			}

    		}

    		// search into node subtree.
    		if ( root.children ) {

    			const searchNodeSubtree = function ( children ) {

    				for ( let i = 0; i < children.length; i ++ ) {

    					const childNode = children[ i ];

    					if ( childNode.name === nodeName || childNode.uuid === nodeName ) {

    						return childNode;

    					}

    					const result = searchNodeSubtree( childNode.children );

    					if ( result ) return result;

    				}

    				return null;

    			};

    			const subTreeNode = searchNodeSubtree( root.children );

    			if ( subTreeNode ) {

    				return subTreeNode;

    			}

    		}

    		return null;

    	}

    	// these are used to "bind" a nonexistent property
    	_getValue_unavailable() {}
    	_setValue_unavailable() {}

    	// Getters

    	_getValue_direct( buffer, offset ) {

    		buffer[ offset ] = this.targetObject[ this.propertyName ];

    	}

    	_getValue_array( buffer, offset ) {

    		const source = this.resolvedProperty;

    		for ( let i = 0, n = source.length; i !== n; ++ i ) {

    			buffer[ offset ++ ] = source[ i ];

    		}

    	}

    	_getValue_arrayElement( buffer, offset ) {

    		buffer[ offset ] = this.resolvedProperty[ this.propertyIndex ];

    	}

    	_getValue_toArray( buffer, offset ) {

    		this.resolvedProperty.toArray( buffer, offset );

    	}

    	// Direct

    	_setValue_direct( buffer, offset ) {

    		this.targetObject[ this.propertyName ] = buffer[ offset ];

    	}

    	_setValue_direct_setNeedsUpdate( buffer, offset ) {

    		this.targetObject[ this.propertyName ] = buffer[ offset ];
    		this.targetObject.needsUpdate = true;

    	}

    	_setValue_direct_setMatrixWorldNeedsUpdate( buffer, offset ) {

    		this.targetObject[ this.propertyName ] = buffer[ offset ];
    		this.targetObject.matrixWorldNeedsUpdate = true;

    	}

    	// EntireArray

    	_setValue_array( buffer, offset ) {

    		const dest = this.resolvedProperty;

    		for ( let i = 0, n = dest.length; i !== n; ++ i ) {

    			dest[ i ] = buffer[ offset ++ ];

    		}

    	}

    	_setValue_array_setNeedsUpdate( buffer, offset ) {

    		const dest = this.resolvedProperty;

    		for ( let i = 0, n = dest.length; i !== n; ++ i ) {

    			dest[ i ] = buffer[ offset ++ ];

    		}

    		this.targetObject.needsUpdate = true;

    	}

    	_setValue_array_setMatrixWorldNeedsUpdate( buffer, offset ) {

    		const dest = this.resolvedProperty;

    		for ( let i = 0, n = dest.length; i !== n; ++ i ) {

    			dest[ i ] = buffer[ offset ++ ];

    		}

    		this.targetObject.matrixWorldNeedsUpdate = true;

    	}

    	// ArrayElement

    	_setValue_arrayElement( buffer, offset ) {

    		this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];

    	}

    	_setValue_arrayElement_setNeedsUpdate( buffer, offset ) {

    		this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
    		this.targetObject.needsUpdate = true;

    	}

    	_setValue_arrayElement_setMatrixWorldNeedsUpdate( buffer, offset ) {

    		this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
    		this.targetObject.matrixWorldNeedsUpdate = true;

    	}

    	// HasToFromArray

    	_setValue_fromArray( buffer, offset ) {

    		this.resolvedProperty.fromArray( buffer, offset );

    	}

    	_setValue_fromArray_setNeedsUpdate( buffer, offset ) {

    		this.resolvedProperty.fromArray( buffer, offset );
    		this.targetObject.needsUpdate = true;

    	}

    	_setValue_fromArray_setMatrixWorldNeedsUpdate( buffer, offset ) {

    		this.resolvedProperty.fromArray( buffer, offset );
    		this.targetObject.matrixWorldNeedsUpdate = true;

    	}

    	_getValue_unbound( targetArray, offset ) {

    		this.bind();
    		this.getValue( targetArray, offset );

    	}

    	_setValue_unbound( sourceArray, offset ) {

    		this.bind();
    		this.setValue( sourceArray, offset );

    	}

    	// create getter / setter pair for a property in the scene graph
    	bind() {

    		let targetObject = this.node;
    		const parsedPath = this.parsedPath;

    		const objectName = parsedPath.objectName;
    		const propertyName = parsedPath.propertyName;
    		let propertyIndex = parsedPath.propertyIndex;

    		if ( ! targetObject ) {

    			targetObject = PropertyBinding.findNode( this.rootNode, parsedPath.nodeName ) || this.rootNode;

    			this.node = targetObject;

    		}

    		// set fail state so we can just 'return' on error
    		this.getValue = this._getValue_unavailable;
    		this.setValue = this._setValue_unavailable;

    		// ensure there is a value node
    		if ( ! targetObject ) {

    			console.error( 'THREE.PropertyBinding: Trying to update node for track: ' + this.path + ' but it wasn\'t found.' );
    			return;

    		}

    		if ( objectName ) {

    			let objectIndex = parsedPath.objectIndex;

    			// special cases were we need to reach deeper into the hierarchy to get the face materials....
    			switch ( objectName ) {

    				case 'materials':

    					if ( ! targetObject.material ) {

    						console.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );
    						return;

    					}

    					if ( ! targetObject.material.materials ) {

    						console.error( 'THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this );
    						return;

    					}

    					targetObject = targetObject.material.materials;

    					break;

    				case 'bones':

    					if ( ! targetObject.skeleton ) {

    						console.error( 'THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this );
    						return;

    					}

    					// potential future optimization: skip this if propertyIndex is already an integer
    					// and convert the integer string to a true integer.

    					targetObject = targetObject.skeleton.bones;

    					// support resolving morphTarget names into indices.
    					for ( let i = 0; i < targetObject.length; i ++ ) {

    						if ( targetObject[ i ].name === objectIndex ) {

    							objectIndex = i;
    							break;

    						}

    					}

    					break;

    				case 'map':

    					if ( 'map' in targetObject ) {

    						targetObject = targetObject.map;
    						break;

    					}

    					if ( ! targetObject.material ) {

    						console.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );
    						return;

    					}

    					if ( ! targetObject.material.map ) {

    						console.error( 'THREE.PropertyBinding: Can not bind to material.map as node.material does not have a map.', this );
    						return;

    					}

    					targetObject = targetObject.material.map;
    					break;

    				default:

    					if ( targetObject[ objectName ] === undefined ) {

    						console.error( 'THREE.PropertyBinding: Can not bind to objectName of node undefined.', this );
    						return;

    					}

    					targetObject = targetObject[ objectName ];

    			}


    			if ( objectIndex !== undefined ) {

    				if ( targetObject[ objectIndex ] === undefined ) {

    					console.error( 'THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject );
    					return;

    				}

    				targetObject = targetObject[ objectIndex ];

    			}

    		}

    		// resolve property
    		const nodeProperty = targetObject[ propertyName ];

    		if ( nodeProperty === undefined ) {

    			const nodeName = parsedPath.nodeName;

    			console.error( 'THREE.PropertyBinding: Trying to update property for track: ' + nodeName +
    				'.' + propertyName + ' but it wasn\'t found.', targetObject );
    			return;

    		}

    		// determine versioning scheme
    		let versioning = this.Versioning.None;

    		this.targetObject = targetObject;

    		if ( targetObject.needsUpdate !== undefined ) { // material

    			versioning = this.Versioning.NeedsUpdate;

    		} else if ( targetObject.matrixWorldNeedsUpdate !== undefined ) { // node transform

    			versioning = this.Versioning.MatrixWorldNeedsUpdate;

    		}

    		// determine how the property gets bound
    		let bindingType = this.BindingType.Direct;

    		if ( propertyIndex !== undefined ) {

    			// access a sub element of the property array (only primitives are supported right now)

    			if ( propertyName === 'morphTargetInfluences' ) {

    				// potential optimization, skip this if propertyIndex is already an integer, and convert the integer string to a true integer.

    				// support resolving morphTarget names into indices.
    				if ( ! targetObject.geometry ) {

    					console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this );
    					return;

    				}

    				if ( ! targetObject.geometry.morphAttributes ) {

    					console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this );
    					return;

    				}

    				if ( targetObject.morphTargetDictionary[ propertyIndex ] !== undefined ) {

    					propertyIndex = targetObject.morphTargetDictionary[ propertyIndex ];

    				}

    			}

    			bindingType = this.BindingType.ArrayElement;

    			this.resolvedProperty = nodeProperty;
    			this.propertyIndex = propertyIndex;

    		} else if ( nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined ) {

    			// must use copy for Object3D.Euler/Quaternion

    			bindingType = this.BindingType.HasFromToArray;

    			this.resolvedProperty = nodeProperty;

    		} else if ( Array.isArray( nodeProperty ) ) {

    			bindingType = this.BindingType.EntireArray;

    			this.resolvedProperty = nodeProperty;

    		} else {

    			this.propertyName = propertyName;

    		}

    		// select getter / setter
    		this.getValue = this.GetterByBindingType[ bindingType ];
    		this.setValue = this.SetterByBindingTypeAndVersioning[ bindingType ][ versioning ];

    	}

    	unbind() {

    		this.node = null;

    		// back to the prototype version of getValue / setValue
    		// note: avoiding to mutate the shape of 'this' via 'delete'
    		this.getValue = this._getValue_unbound;
    		this.setValue = this._setValue_unbound;

    	}

    }

    PropertyBinding.Composite = Composite;

    PropertyBinding.prototype.BindingType = {
    	Direct: 0,
    	EntireArray: 1,
    	ArrayElement: 2,
    	HasFromToArray: 3
    };

    PropertyBinding.prototype.Versioning = {
    	None: 0,
    	NeedsUpdate: 1,
    	MatrixWorldNeedsUpdate: 2
    };

    PropertyBinding.prototype.GetterByBindingType = [

    	PropertyBinding.prototype._getValue_direct,
    	PropertyBinding.prototype._getValue_array,
    	PropertyBinding.prototype._getValue_arrayElement,
    	PropertyBinding.prototype._getValue_toArray,

    ];

    PropertyBinding.prototype.SetterByBindingTypeAndVersioning = [

    	[
    		// Direct
    		PropertyBinding.prototype._setValue_direct,
    		PropertyBinding.prototype._setValue_direct_setNeedsUpdate,
    		PropertyBinding.prototype._setValue_direct_setMatrixWorldNeedsUpdate,

    	], [

    		// EntireArray

    		PropertyBinding.prototype._setValue_array,
    		PropertyBinding.prototype._setValue_array_setNeedsUpdate,
    		PropertyBinding.prototype._setValue_array_setMatrixWorldNeedsUpdate,

    	], [

    		// ArrayElement
    		PropertyBinding.prototype._setValue_arrayElement,
    		PropertyBinding.prototype._setValue_arrayElement_setNeedsUpdate,
    		PropertyBinding.prototype._setValue_arrayElement_setMatrixWorldNeedsUpdate,

    	], [

    		// HasToFromArray
    		PropertyBinding.prototype._setValue_fromArray,
    		PropertyBinding.prototype._setValue_fromArray_setNeedsUpdate,
    		PropertyBinding.prototype._setValue_fromArray_setMatrixWorldNeedsUpdate,

    	]

    ];

    /**
     *
     * A group of objects that receives a shared animation state.
     *
     * Usage:
     *
     *  - Add objects you would otherwise pass as 'root' to the
     *    constructor or the .clipAction method of AnimationMixer.
     *
     *  - Instead pass this object as 'root'.
     *
     *  - You can also add and remove objects later when the mixer
     *    is running.
     *
     * Note:
     *
     *    Objects of this class appear as one object to the mixer,
     *    so cache control of the individual objects must be done
     *    on the group.
     *
     * Limitation:
     *
     *  - The animated properties must be compatible among the
     *    all objects in the group.
     *
     *  - A single property can either be controlled through a
     *    target group or directly, but not both.
     */

    class AnimationObjectGroup {

    	constructor() {

    		this.isAnimationObjectGroup = true;

    		this.uuid = generateUUID();

    		// cached objects followed by the active ones
    		this._objects = Array.prototype.slice.call( arguments );

    		this.nCachedObjects_ = 0; // threshold
    		// note: read by PropertyBinding.Composite

    		const indices = {};
    		this._indicesByUUID = indices; // for bookkeeping

    		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {

    			indices[ arguments[ i ].uuid ] = i;

    		}

    		this._paths = []; // inside: string
    		this._parsedPaths = []; // inside: { we don't care, here }
    		this._bindings = []; // inside: Array< PropertyBinding >
    		this._bindingsIndicesByPath = {}; // inside: indices in these arrays

    		const scope = this;

    		this.stats = {

    			objects: {
    				get total() {

    					return scope._objects.length;

    				},
    				get inUse() {

    					return this.total - scope.nCachedObjects_;

    				}
    			},
    			get bindingsPerObject() {

    				return scope._bindings.length;

    			}

    		};

    	}

    	add() {

    		const objects = this._objects,
    			indicesByUUID = this._indicesByUUID,
    			paths = this._paths,
    			parsedPaths = this._parsedPaths,
    			bindings = this._bindings,
    			nBindings = bindings.length;

    		let knownObject = undefined,
    			nObjects = objects.length,
    			nCachedObjects = this.nCachedObjects_;

    		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {

    			const object = arguments[ i ],
    				uuid = object.uuid;
    			let index = indicesByUUID[ uuid ];

    			if ( index === undefined ) {

    				// unknown object -> add it to the ACTIVE region

    				index = nObjects ++;
    				indicesByUUID[ uuid ] = index;
    				objects.push( object );

    				// accounting is done, now do the same for all bindings

    				for ( let j = 0, m = nBindings; j !== m; ++ j ) {

    					bindings[ j ].push( new PropertyBinding( object, paths[ j ], parsedPaths[ j ] ) );

    				}

    			} else if ( index < nCachedObjects ) {

    				knownObject = objects[ index ];

    				// move existing object to the ACTIVE region

    				const firstActiveIndex = -- nCachedObjects,
    					lastCachedObject = objects[ firstActiveIndex ];

    				indicesByUUID[ lastCachedObject.uuid ] = index;
    				objects[ index ] = lastCachedObject;

    				indicesByUUID[ uuid ] = firstActiveIndex;
    				objects[ firstActiveIndex ] = object;

    				// accounting is done, now do the same for all bindings

    				for ( let j = 0, m = nBindings; j !== m; ++ j ) {

    					const bindingsForPath = bindings[ j ],
    						lastCached = bindingsForPath[ firstActiveIndex ];

    					let binding = bindingsForPath[ index ];

    					bindingsForPath[ index ] = lastCached;

    					if ( binding === undefined ) {

    						// since we do not bother to create new bindings
    						// for objects that are cached, the binding may
    						// or may not exist

    						binding = new PropertyBinding( object, paths[ j ], parsedPaths[ j ] );

    					}

    					bindingsForPath[ firstActiveIndex ] = binding;

    				}

    			} else if ( objects[ index ] !== knownObject ) {

    				console.error( 'THREE.AnimationObjectGroup: Different objects with the same UUID ' +
    					'detected. Clean the caches or recreate your infrastructure when reloading scenes.' );

    			} // else the object is already where we want it to be

    		} // for arguments

    		this.nCachedObjects_ = nCachedObjects;

    	}

    	remove() {

    		const objects = this._objects,
    			indicesByUUID = this._indicesByUUID,
    			bindings = this._bindings,
    			nBindings = bindings.length;

    		let nCachedObjects = this.nCachedObjects_;

    		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {

    			const object = arguments[ i ],
    				uuid = object.uuid,
    				index = indicesByUUID[ uuid ];

    			if ( index !== undefined && index >= nCachedObjects ) {

    				// move existing object into the CACHED region

    				const lastCachedIndex = nCachedObjects ++,
    					firstActiveObject = objects[ lastCachedIndex ];

    				indicesByUUID[ firstActiveObject.uuid ] = index;
    				objects[ index ] = firstActiveObject;

    				indicesByUUID[ uuid ] = lastCachedIndex;
    				objects[ lastCachedIndex ] = object;

    				// accounting is done, now do the same for all bindings

    				for ( let j = 0, m = nBindings; j !== m; ++ j ) {

    					const bindingsForPath = bindings[ j ],
    						firstActive = bindingsForPath[ lastCachedIndex ],
    						binding = bindingsForPath[ index ];

    					bindingsForPath[ index ] = firstActive;
    					bindingsForPath[ lastCachedIndex ] = binding;

    				}

    			}

    		} // for arguments

    		this.nCachedObjects_ = nCachedObjects;

    	}

    	// remove & forget
    	uncache() {

    		const objects = this._objects,
    			indicesByUUID = this._indicesByUUID,
    			bindings = this._bindings,
    			nBindings = bindings.length;

    		let nCachedObjects = this.nCachedObjects_,
    			nObjects = objects.length;

    		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {

    			const object = arguments[ i ],
    				uuid = object.uuid,
    				index = indicesByUUID[ uuid ];

    			if ( index !== undefined ) {

    				delete indicesByUUID[ uuid ];

    				if ( index < nCachedObjects ) {

    					// object is cached, shrink the CACHED region

    					const firstActiveIndex = -- nCachedObjects,
    						lastCachedObject = objects[ firstActiveIndex ],
    						lastIndex = -- nObjects,
    						lastObject = objects[ lastIndex ];

    					// last cached object takes this object's place
    					indicesByUUID[ lastCachedObject.uuid ] = index;
    					objects[ index ] = lastCachedObject;

    					// last object goes to the activated slot and pop
    					indicesByUUID[ lastObject.uuid ] = firstActiveIndex;
    					objects[ firstActiveIndex ] = lastObject;
    					objects.pop();

    					// accounting is done, now do the same for all bindings

    					for ( let j = 0, m = nBindings; j !== m; ++ j ) {

    						const bindingsForPath = bindings[ j ],
    							lastCached = bindingsForPath[ firstActiveIndex ],
    							last = bindingsForPath[ lastIndex ];

    						bindingsForPath[ index ] = lastCached;
    						bindingsForPath[ firstActiveIndex ] = last;
    						bindingsForPath.pop();

    					}

    				} else {

    					// object is active, just swap with the last and pop

    					const lastIndex = -- nObjects,
    						lastObject = objects[ lastIndex ];

    					if ( lastIndex > 0 ) {

    						indicesByUUID[ lastObject.uuid ] = index;

    					}

    					objects[ index ] = lastObject;
    					objects.pop();

    					// accounting is done, now do the same for all bindings

    					for ( let j = 0, m = nBindings; j !== m; ++ j ) {

    						const bindingsForPath = bindings[ j ];

    						bindingsForPath[ index ] = bindingsForPath[ lastIndex ];
    						bindingsForPath.pop();

    					}

    				} // cached or active

    			} // if object is known

    		} // for arguments

    		this.nCachedObjects_ = nCachedObjects;

    	}

    	// Internal interface used by befriended PropertyBinding.Composite:

    	subscribe_( path, parsedPath ) {

    		// returns an array of bindings for the given path that is changed
    		// according to the contained objects in the group

    		const indicesByPath = this._bindingsIndicesByPath;
    		let index = indicesByPath[ path ];
    		const bindings = this._bindings;

    		if ( index !== undefined ) return bindings[ index ];

    		const paths = this._paths,
    			parsedPaths = this._parsedPaths,
    			objects = this._objects,
    			nObjects = objects.length,
    			nCachedObjects = this.nCachedObjects_,
    			bindingsForPath = new Array( nObjects );

    		index = bindings.length;

    		indicesByPath[ path ] = index;

    		paths.push( path );
    		parsedPaths.push( parsedPath );
    		bindings.push( bindingsForPath );

    		for ( let i = nCachedObjects, n = objects.length; i !== n; ++ i ) {

    			const object = objects[ i ];
    			bindingsForPath[ i ] = new PropertyBinding( object, path, parsedPath );

    		}

    		return bindingsForPath;

    	}

    	unsubscribe_( path ) {

    		// tells the group to forget about a property path and no longer
    		// update the array previously obtained with 'subscribe_'

    		const indicesByPath = this._bindingsIndicesByPath,
    			index = indicesByPath[ path ];

    		if ( index !== undefined ) {

    			const paths = this._paths,
    				parsedPaths = this._parsedPaths,
    				bindings = this._bindings,
    				lastBindingsIndex = bindings.length - 1,
    				lastBindings = bindings[ lastBindingsIndex ],
    				lastBindingsPath = path[ lastBindingsIndex ];

    			indicesByPath[ lastBindingsPath ] = index;

    			bindings[ index ] = lastBindings;
    			bindings.pop();

    			parsedPaths[ index ] = parsedPaths[ lastBindingsIndex ];
    			parsedPaths.pop();

    			paths[ index ] = paths[ lastBindingsIndex ];
    			paths.pop();

    		}

    	}

    }

    class AnimationAction {

    	constructor( mixer, clip, localRoot = null, blendMode = clip.blendMode ) {

    		this._mixer = mixer;
    		this._clip = clip;
    		this._localRoot = localRoot;
    		this.blendMode = blendMode;

    		const tracks = clip.tracks,
    			nTracks = tracks.length,
    			interpolants = new Array( nTracks );

    		const interpolantSettings = {
    			endingStart: ZeroCurvatureEnding,
    			endingEnd: ZeroCurvatureEnding
    		};

    		for ( let i = 0; i !== nTracks; ++ i ) {

    			const interpolant = tracks[ i ].createInterpolant( null );
    			interpolants[ i ] = interpolant;
    			interpolant.settings = interpolantSettings;

    		}

    		this._interpolantSettings = interpolantSettings;

    		this._interpolants = interpolants; // bound by the mixer

    		// inside: PropertyMixer (managed by the mixer)
    		this._propertyBindings = new Array( nTracks );

    		this._cacheIndex = null; // for the memory manager
    		this._byClipCacheIndex = null; // for the memory manager

    		this._timeScaleInterpolant = null;
    		this._weightInterpolant = null;

    		this.loop = LoopRepeat;
    		this._loopCount = - 1;

    		// global mixer time when the action is to be started
    		// it's set back to 'null' upon start of the action
    		this._startTime = null;

    		// scaled local time of the action
    		// gets clamped or wrapped to 0..clip.duration according to loop
    		this.time = 0;

    		this.timeScale = 1;
    		this._effectiveTimeScale = 1;

    		this.weight = 1;
    		this._effectiveWeight = 1;

    		this.repetitions = Infinity; // no. of repetitions when looping

    		this.paused = false; // true -> zero effective time scale
    		this.enabled = true; // false -> zero effective weight

    		this.clampWhenFinished = false;// keep feeding the last frame?

    		this.zeroSlopeAtStart = true;// for smooth interpolation w/o separate
    		this.zeroSlopeAtEnd = true;// clips for start, loop and end

    	}

    	// State & Scheduling

    	play() {

    		this._mixer._activateAction( this );

    		return this;

    	}

    	stop() {

    		this._mixer._deactivateAction( this );

    		return this.reset();

    	}

    	reset() {

    		this.paused = false;
    		this.enabled = true;

    		this.time = 0; // restart clip
    		this._loopCount = - 1;// forget previous loops
    		this._startTime = null;// forget scheduling

    		return this.stopFading().stopWarping();

    	}

    	isRunning() {

    		return this.enabled && ! this.paused && this.timeScale !== 0 &&
    			this._startTime === null && this._mixer._isActiveAction( this );

    	}

    	// return true when play has been called
    	isScheduled() {

    		return this._mixer._isActiveAction( this );

    	}

    	startAt( time ) {

    		this._startTime = time;

    		return this;

    	}

    	setLoop( mode, repetitions ) {

    		this.loop = mode;
    		this.repetitions = repetitions;

    		return this;

    	}

    	// Weight

    	// set the weight stopping any scheduled fading
    	// although .enabled = false yields an effective weight of zero, this
    	// method does *not* change .enabled, because it would be confusing
    	setEffectiveWeight( weight ) {

    		this.weight = weight;

    		// note: same logic as when updated at runtime
    		this._effectiveWeight = this.enabled ? weight : 0;

    		return this.stopFading();

    	}

    	// return the weight considering fading and .enabled
    	getEffectiveWeight() {

    		return this._effectiveWeight;

    	}

    	fadeIn( duration ) {

    		return this._scheduleFading( duration, 0, 1 );

    	}

    	fadeOut( duration ) {

    		return this._scheduleFading( duration, 1, 0 );

    	}

    	crossFadeFrom( fadeOutAction, duration, warp ) {

    		fadeOutAction.fadeOut( duration );
    		this.fadeIn( duration );

    		if ( warp ) {

    			const fadeInDuration = this._clip.duration,
    				fadeOutDuration = fadeOutAction._clip.duration,

    				startEndRatio = fadeOutDuration / fadeInDuration,
    				endStartRatio = fadeInDuration / fadeOutDuration;

    			fadeOutAction.warp( 1.0, startEndRatio, duration );
    			this.warp( endStartRatio, 1.0, duration );

    		}

    		return this;

    	}

    	crossFadeTo( fadeInAction, duration, warp ) {

    		return fadeInAction.crossFadeFrom( this, duration, warp );

    	}

    	stopFading() {

    		const weightInterpolant = this._weightInterpolant;

    		if ( weightInterpolant !== null ) {

    			this._weightInterpolant = null;
    			this._mixer._takeBackControlInterpolant( weightInterpolant );

    		}

    		return this;

    	}

    	// Time Scale Control

    	// set the time scale stopping any scheduled warping
    	// although .paused = true yields an effective time scale of zero, this
    	// method does *not* change .paused, because it would be confusing
    	setEffectiveTimeScale( timeScale ) {

    		this.timeScale = timeScale;
    		this._effectiveTimeScale = this.paused ? 0 : timeScale;

    		return this.stopWarping();

    	}

    	// return the time scale considering warping and .paused
    	getEffectiveTimeScale() {

    		return this._effectiveTimeScale;

    	}

    	setDuration( duration ) {

    		this.timeScale = this._clip.duration / duration;

    		return this.stopWarping();

    	}

    	syncWith( action ) {

    		this.time = action.time;
    		this.timeScale = action.timeScale;

    		return this.stopWarping();

    	}

    	halt( duration ) {

    		return this.warp( this._effectiveTimeScale, 0, duration );

    	}

    	warp( startTimeScale, endTimeScale, duration ) {

    		const mixer = this._mixer,
    			now = mixer.time,
    			timeScale = this.timeScale;

    		let interpolant = this._timeScaleInterpolant;

    		if ( interpolant === null ) {

    			interpolant = mixer._lendControlInterpolant();
    			this._timeScaleInterpolant = interpolant;

    		}

    		const times = interpolant.parameterPositions,
    			values = interpolant.sampleValues;

    		times[ 0 ] = now;
    		times[ 1 ] = now + duration;

    		values[ 0 ] = startTimeScale / timeScale;
    		values[ 1 ] = endTimeScale / timeScale;

    		return this;

    	}

    	stopWarping() {

    		const timeScaleInterpolant = this._timeScaleInterpolant;

    		if ( timeScaleInterpolant !== null ) {

    			this._timeScaleInterpolant = null;
    			this._mixer._takeBackControlInterpolant( timeScaleInterpolant );

    		}

    		return this;

    	}

    	// Object Accessors

    	getMixer() {

    		return this._mixer;

    	}

    	getClip() {

    		return this._clip;

    	}

    	getRoot() {

    		return this._localRoot || this._mixer._root;

    	}

    	// Interna

    	_update( time, deltaTime, timeDirection, accuIndex ) {

    		// called by the mixer

    		if ( ! this.enabled ) {

    			// call ._updateWeight() to update ._effectiveWeight

    			this._updateWeight( time );
    			return;

    		}

    		const startTime = this._startTime;

    		if ( startTime !== null ) {

    			// check for scheduled start of action

    			const timeRunning = ( time - startTime ) * timeDirection;
    			if ( timeRunning < 0 || timeDirection === 0 ) {

    				deltaTime = 0;

    			} else {


    				this._startTime = null; // unschedule
    				deltaTime = timeDirection * timeRunning;

    			}

    		}

    		// apply time scale and advance time

    		deltaTime *= this._updateTimeScale( time );
    		const clipTime = this._updateTime( deltaTime );

    		// note: _updateTime may disable the action resulting in
    		// an effective weight of 0

    		const weight = this._updateWeight( time );

    		if ( weight > 0 ) {

    			const interpolants = this._interpolants;
    			const propertyMixers = this._propertyBindings;

    			switch ( this.blendMode ) {

    				case AdditiveAnimationBlendMode:

    					for ( let j = 0, m = interpolants.length; j !== m; ++ j ) {

    						interpolants[ j ].evaluate( clipTime );
    						propertyMixers[ j ].accumulateAdditive( weight );

    					}

    					break;

    				case NormalAnimationBlendMode:
    				default:

    					for ( let j = 0, m = interpolants.length; j !== m; ++ j ) {

    						interpolants[ j ].evaluate( clipTime );
    						propertyMixers[ j ].accumulate( accuIndex, weight );

    					}

    			}

    		}

    	}

    	_updateWeight( time ) {

    		let weight = 0;

    		if ( this.enabled ) {

    			weight = this.weight;
    			const interpolant = this._weightInterpolant;

    			if ( interpolant !== null ) {

    				const interpolantValue = interpolant.evaluate( time )[ 0 ];

    				weight *= interpolantValue;

    				if ( time > interpolant.parameterPositions[ 1 ] ) {

    					this.stopFading();

    					if ( interpolantValue === 0 ) {

    						// faded out, disable
    						this.enabled = false;

    					}

    				}

    			}

    		}

    		this._effectiveWeight = weight;
    		return weight;

    	}

    	_updateTimeScale( time ) {

    		let timeScale = 0;

    		if ( ! this.paused ) {

    			timeScale = this.timeScale;

    			const interpolant = this._timeScaleInterpolant;

    			if ( interpolant !== null ) {

    				const interpolantValue = interpolant.evaluate( time )[ 0 ];

    				timeScale *= interpolantValue;

    				if ( time > interpolant.parameterPositions[ 1 ] ) {

    					this.stopWarping();

    					if ( timeScale === 0 ) {

    						// motion has halted, pause
    						this.paused = true;

    					} else {

    						// warp done - apply final time scale
    						this.timeScale = timeScale;

    					}

    				}

    			}

    		}

    		this._effectiveTimeScale = timeScale;
    		return timeScale;

    	}

    	_updateTime( deltaTime ) {

    		const duration = this._clip.duration;
    		const loop = this.loop;

    		let time = this.time + deltaTime;
    		let loopCount = this._loopCount;

    		const pingPong = ( loop === LoopPingPong );

    		if ( deltaTime === 0 ) {

    			if ( loopCount === - 1 ) return time;

    			return ( pingPong && ( loopCount & 1 ) === 1 ) ? duration - time : time;

    		}

    		if ( loop === LoopOnce ) {

    			if ( loopCount === - 1 ) {

    				// just started

    				this._loopCount = 0;
    				this._setEndings( true, true, false );

    			}

    			handle_stop: {

    				if ( time >= duration ) {

    					time = duration;

    				} else if ( time < 0 ) {

    					time = 0;

    				} else {

    					this.time = time;

    					break handle_stop;

    				}

    				if ( this.clampWhenFinished ) this.paused = true;
    				else this.enabled = false;

    				this.time = time;

    				this._mixer.dispatchEvent( {
    					type: 'finished', action: this,
    					direction: deltaTime < 0 ? - 1 : 1
    				} );

    			}

    		} else { // repetitive Repeat or PingPong

    			if ( loopCount === - 1 ) {

    				// just started

    				if ( deltaTime >= 0 ) {

    					loopCount = 0;

    					this._setEndings( true, this.repetitions === 0, pingPong );

    				} else {

    					// when looping in reverse direction, the initial
    					// transition through zero counts as a repetition,
    					// so leave loopCount at -1

    					this._setEndings( this.repetitions === 0, true, pingPong );

    				}

    			}

    			if ( time >= duration || time < 0 ) {

    				// wrap around

    				const loopDelta = Math.floor( time / duration ); // signed
    				time -= duration * loopDelta;

    				loopCount += Math.abs( loopDelta );

    				const pending = this.repetitions - loopCount;

    				if ( pending <= 0 ) {

    					// have to stop (switch state, clamp time, fire event)

    					if ( this.clampWhenFinished ) this.paused = true;
    					else this.enabled = false;

    					time = deltaTime > 0 ? duration : 0;

    					this.time = time;

    					this._mixer.dispatchEvent( {
    						type: 'finished', action: this,
    						direction: deltaTime > 0 ? 1 : - 1
    					} );

    				} else {

    					// keep running

    					if ( pending === 1 ) {

    						// entering the last round

    						const atStart = deltaTime < 0;
    						this._setEndings( atStart, ! atStart, pingPong );

    					} else {

    						this._setEndings( false, false, pingPong );

    					}

    					this._loopCount = loopCount;

    					this.time = time;

    					this._mixer.dispatchEvent( {
    						type: 'loop', action: this, loopDelta: loopDelta
    					} );

    				}

    			} else {

    				this.time = time;

    			}

    			if ( pingPong && ( loopCount & 1 ) === 1 ) {

    				// invert time for the "pong round"

    				return duration - time;

    			}

    		}

    		return time;

    	}

    	_setEndings( atStart, atEnd, pingPong ) {

    		const settings = this._interpolantSettings;

    		if ( pingPong ) {

    			settings.endingStart = ZeroSlopeEnding;
    			settings.endingEnd = ZeroSlopeEnding;

    		} else {

    			// assuming for LoopOnce atStart == atEnd == true

    			if ( atStart ) {

    				settings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;

    			} else {

    				settings.endingStart = WrapAroundEnding;

    			}

    			if ( atEnd ) {

    				settings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;

    			} else {

    				settings.endingEnd 	 = WrapAroundEnding;

    			}

    		}

    	}

    	_scheduleFading( duration, weightNow, weightThen ) {

    		const mixer = this._mixer, now = mixer.time;
    		let interpolant = this._weightInterpolant;

    		if ( interpolant === null ) {

    			interpolant = mixer._lendControlInterpolant();
    			this._weightInterpolant = interpolant;

    		}

    		const times = interpolant.parameterPositions,
    			values = interpolant.sampleValues;

    		times[ 0 ] = now;
    		values[ 0 ] = weightNow;
    		times[ 1 ] = now + duration;
    		values[ 1 ] = weightThen;

    		return this;

    	}

    }

    const _controlInterpolantsResultBuffer = new Float32Array( 1 );


    class AnimationMixer extends EventDispatcher {

    	constructor( root ) {

    		super();

    		this._root = root;
    		this._initMemoryManager();
    		this._accuIndex = 0;
    		this.time = 0;
    		this.timeScale = 1.0;

    	}

    	_bindAction( action, prototypeAction ) {

    		const root = action._localRoot || this._root,
    			tracks = action._clip.tracks,
    			nTracks = tracks.length,
    			bindings = action._propertyBindings,
    			interpolants = action._interpolants,
    			rootUuid = root.uuid,
    			bindingsByRoot = this._bindingsByRootAndName;

    		let bindingsByName = bindingsByRoot[ rootUuid ];

    		if ( bindingsByName === undefined ) {

    			bindingsByName = {};
    			bindingsByRoot[ rootUuid ] = bindingsByName;

    		}

    		for ( let i = 0; i !== nTracks; ++ i ) {

    			const track = tracks[ i ],
    				trackName = track.name;

    			let binding = bindingsByName[ trackName ];

    			if ( binding !== undefined ) {

    				++ binding.referenceCount;
    				bindings[ i ] = binding;

    			} else {

    				binding = bindings[ i ];

    				if ( binding !== undefined ) {

    					// existing binding, make sure the cache knows

    					if ( binding._cacheIndex === null ) {

    						++ binding.referenceCount;
    						this._addInactiveBinding( binding, rootUuid, trackName );

    					}

    					continue;

    				}

    				const path = prototypeAction && prototypeAction.
    					_propertyBindings[ i ].binding.parsedPath;

    				binding = new PropertyMixer(
    					PropertyBinding.create( root, trackName, path ),
    					track.ValueTypeName, track.getValueSize() );

    				++ binding.referenceCount;
    				this._addInactiveBinding( binding, rootUuid, trackName );

    				bindings[ i ] = binding;

    			}

    			interpolants[ i ].resultBuffer = binding.buffer;

    		}

    	}

    	_activateAction( action ) {

    		if ( ! this._isActiveAction( action ) ) {

    			if ( action._cacheIndex === null ) {

    				// this action has been forgotten by the cache, but the user
    				// appears to be still using it -> rebind

    				const rootUuid = ( action._localRoot || this._root ).uuid,
    					clipUuid = action._clip.uuid,
    					actionsForClip = this._actionsByClip[ clipUuid ];

    				this._bindAction( action,
    					actionsForClip && actionsForClip.knownActions[ 0 ] );

    				this._addInactiveAction( action, clipUuid, rootUuid );

    			}

    			const bindings = action._propertyBindings;

    			// increment reference counts / sort out state
    			for ( let i = 0, n = bindings.length; i !== n; ++ i ) {

    				const binding = bindings[ i ];

    				if ( binding.useCount ++ === 0 ) {

    					this._lendBinding( binding );
    					binding.saveOriginalState();

    				}

    			}

    			this._lendAction( action );

    		}

    	}

    	_deactivateAction( action ) {

    		if ( this._isActiveAction( action ) ) {

    			const bindings = action._propertyBindings;

    			// decrement reference counts / sort out state
    			for ( let i = 0, n = bindings.length; i !== n; ++ i ) {

    				const binding = bindings[ i ];

    				if ( -- binding.useCount === 0 ) {

    					binding.restoreOriginalState();
    					this._takeBackBinding( binding );

    				}

    			}

    			this._takeBackAction( action );

    		}

    	}

    	// Memory manager

    	_initMemoryManager() {

    		this._actions = []; // 'nActiveActions' followed by inactive ones
    		this._nActiveActions = 0;

    		this._actionsByClip = {};
    		// inside:
    		// {
    		// 	knownActions: Array< AnimationAction > - used as prototypes
    		// 	actionByRoot: AnimationAction - lookup
    		// }


    		this._bindings = []; // 'nActiveBindings' followed by inactive ones
    		this._nActiveBindings = 0;

    		this._bindingsByRootAndName = {}; // inside: Map< name, PropertyMixer >


    		this._controlInterpolants = []; // same game as above
    		this._nActiveControlInterpolants = 0;

    		const scope = this;

    		this.stats = {

    			actions: {
    				get total() {

    					return scope._actions.length;

    				},
    				get inUse() {

    					return scope._nActiveActions;

    				}
    			},
    			bindings: {
    				get total() {

    					return scope._bindings.length;

    				},
    				get inUse() {

    					return scope._nActiveBindings;

    				}
    			},
    			controlInterpolants: {
    				get total() {

    					return scope._controlInterpolants.length;

    				},
    				get inUse() {

    					return scope._nActiveControlInterpolants;

    				}
    			}

    		};

    	}

    	// Memory management for AnimationAction objects

    	_isActiveAction( action ) {

    		const index = action._cacheIndex;
    		return index !== null && index < this._nActiveActions;

    	}

    	_addInactiveAction( action, clipUuid, rootUuid ) {

    		const actions = this._actions,
    			actionsByClip = this._actionsByClip;

    		let actionsForClip = actionsByClip[ clipUuid ];

    		if ( actionsForClip === undefined ) {

    			actionsForClip = {

    				knownActions: [ action ],
    				actionByRoot: {}

    			};

    			action._byClipCacheIndex = 0;

    			actionsByClip[ clipUuid ] = actionsForClip;

    		} else {

    			const knownActions = actionsForClip.knownActions;

    			action._byClipCacheIndex = knownActions.length;
    			knownActions.push( action );

    		}

    		action._cacheIndex = actions.length;
    		actions.push( action );

    		actionsForClip.actionByRoot[ rootUuid ] = action;

    	}

    	_removeInactiveAction( action ) {

    		const actions = this._actions,
    			lastInactiveAction = actions[ actions.length - 1 ],
    			cacheIndex = action._cacheIndex;

    		lastInactiveAction._cacheIndex = cacheIndex;
    		actions[ cacheIndex ] = lastInactiveAction;
    		actions.pop();

    		action._cacheIndex = null;


    		const clipUuid = action._clip.uuid,
    			actionsByClip = this._actionsByClip,
    			actionsForClip = actionsByClip[ clipUuid ],
    			knownActionsForClip = actionsForClip.knownActions,

    			lastKnownAction =
    				knownActionsForClip[ knownActionsForClip.length - 1 ],

    			byClipCacheIndex = action._byClipCacheIndex;

    		lastKnownAction._byClipCacheIndex = byClipCacheIndex;
    		knownActionsForClip[ byClipCacheIndex ] = lastKnownAction;
    		knownActionsForClip.pop();

    		action._byClipCacheIndex = null;


    		const actionByRoot = actionsForClip.actionByRoot,
    			rootUuid = ( action._localRoot || this._root ).uuid;

    		delete actionByRoot[ rootUuid ];

    		if ( knownActionsForClip.length === 0 ) {

    			delete actionsByClip[ clipUuid ];

    		}

    		this._removeInactiveBindingsForAction( action );

    	}

    	_removeInactiveBindingsForAction( action ) {

    		const bindings = action._propertyBindings;

    		for ( let i = 0, n = bindings.length; i !== n; ++ i ) {

    			const binding = bindings[ i ];

    			if ( -- binding.referenceCount === 0 ) {

    				this._removeInactiveBinding( binding );

    			}

    		}

    	}

    	_lendAction( action ) {

    		// [ active actions |  inactive actions  ]
    		// [  active actions >| inactive actions ]
    		//                 s        a
    		//                  <-swap->
    		//                 a        s

    		const actions = this._actions,
    			prevIndex = action._cacheIndex,

    			lastActiveIndex = this._nActiveActions ++,

    			firstInactiveAction = actions[ lastActiveIndex ];

    		action._cacheIndex = lastActiveIndex;
    		actions[ lastActiveIndex ] = action;

    		firstInactiveAction._cacheIndex = prevIndex;
    		actions[ prevIndex ] = firstInactiveAction;

    	}

    	_takeBackAction( action ) {

    		// [  active actions  | inactive actions ]
    		// [ active actions |< inactive actions  ]
    		//        a        s
    		//         <-swap->
    		//        s        a

    		const actions = this._actions,
    			prevIndex = action._cacheIndex,

    			firstInactiveIndex = -- this._nActiveActions,

    			lastActiveAction = actions[ firstInactiveIndex ];

    		action._cacheIndex = firstInactiveIndex;
    		actions[ firstInactiveIndex ] = action;

    		lastActiveAction._cacheIndex = prevIndex;
    		actions[ prevIndex ] = lastActiveAction;

    	}

    	// Memory management for PropertyMixer objects

    	_addInactiveBinding( binding, rootUuid, trackName ) {

    		const bindingsByRoot = this._bindingsByRootAndName,
    			bindings = this._bindings;

    		let bindingByName = bindingsByRoot[ rootUuid ];

    		if ( bindingByName === undefined ) {

    			bindingByName = {};
    			bindingsByRoot[ rootUuid ] = bindingByName;

    		}

    		bindingByName[ trackName ] = binding;

    		binding._cacheIndex = bindings.length;
    		bindings.push( binding );

    	}

    	_removeInactiveBinding( binding ) {

    		const bindings = this._bindings,
    			propBinding = binding.binding,
    			rootUuid = propBinding.rootNode.uuid,
    			trackName = propBinding.path,
    			bindingsByRoot = this._bindingsByRootAndName,
    			bindingByName = bindingsByRoot[ rootUuid ],

    			lastInactiveBinding = bindings[ bindings.length - 1 ],
    			cacheIndex = binding._cacheIndex;

    		lastInactiveBinding._cacheIndex = cacheIndex;
    		bindings[ cacheIndex ] = lastInactiveBinding;
    		bindings.pop();

    		delete bindingByName[ trackName ];

    		if ( Object.keys( bindingByName ).length === 0 ) {

    			delete bindingsByRoot[ rootUuid ];

    		}

    	}

    	_lendBinding( binding ) {

    		const bindings = this._bindings,
    			prevIndex = binding._cacheIndex,

    			lastActiveIndex = this._nActiveBindings ++,

    			firstInactiveBinding = bindings[ lastActiveIndex ];

    		binding._cacheIndex = lastActiveIndex;
    		bindings[ lastActiveIndex ] = binding;

    		firstInactiveBinding._cacheIndex = prevIndex;
    		bindings[ prevIndex ] = firstInactiveBinding;

    	}

    	_takeBackBinding( binding ) {

    		const bindings = this._bindings,
    			prevIndex = binding._cacheIndex,

    			firstInactiveIndex = -- this._nActiveBindings,

    			lastActiveBinding = bindings[ firstInactiveIndex ];

    		binding._cacheIndex = firstInactiveIndex;
    		bindings[ firstInactiveIndex ] = binding;

    		lastActiveBinding._cacheIndex = prevIndex;
    		bindings[ prevIndex ] = lastActiveBinding;

    	}


    	// Memory management of Interpolants for weight and time scale

    	_lendControlInterpolant() {

    		const interpolants = this._controlInterpolants,
    			lastActiveIndex = this._nActiveControlInterpolants ++;

    		let interpolant = interpolants[ lastActiveIndex ];

    		if ( interpolant === undefined ) {

    			interpolant = new LinearInterpolant(
    				new Float32Array( 2 ), new Float32Array( 2 ),
    				1, _controlInterpolantsResultBuffer );

    			interpolant.__cacheIndex = lastActiveIndex;
    			interpolants[ lastActiveIndex ] = interpolant;

    		}

    		return interpolant;

    	}

    	_takeBackControlInterpolant( interpolant ) {

    		const interpolants = this._controlInterpolants,
    			prevIndex = interpolant.__cacheIndex,

    			firstInactiveIndex = -- this._nActiveControlInterpolants,

    			lastActiveInterpolant = interpolants[ firstInactiveIndex ];

    		interpolant.__cacheIndex = firstInactiveIndex;
    		interpolants[ firstInactiveIndex ] = interpolant;

    		lastActiveInterpolant.__cacheIndex = prevIndex;
    		interpolants[ prevIndex ] = lastActiveInterpolant;

    	}

    	// return an action for a clip optionally using a custom root target
    	// object (this method allocates a lot of dynamic memory in case a
    	// previously unknown clip/root combination is specified)
    	clipAction( clip, optionalRoot, blendMode ) {

    		const root = optionalRoot || this._root,
    			rootUuid = root.uuid;

    		let clipObject = typeof clip === 'string' ? AnimationClip.findByName( root, clip ) : clip;

    		const clipUuid = clipObject !== null ? clipObject.uuid : clip;

    		const actionsForClip = this._actionsByClip[ clipUuid ];
    		let prototypeAction = null;

    		if ( blendMode === undefined ) {

    			if ( clipObject !== null ) {

    				blendMode = clipObject.blendMode;

    			} else {

    				blendMode = NormalAnimationBlendMode;

    			}

    		}

    		if ( actionsForClip !== undefined ) {

    			const existingAction = actionsForClip.actionByRoot[ rootUuid ];

    			if ( existingAction !== undefined && existingAction.blendMode === blendMode ) {

    				return existingAction;

    			}

    			// we know the clip, so we don't have to parse all
    			// the bindings again but can just copy
    			prototypeAction = actionsForClip.knownActions[ 0 ];

    			// also, take the clip from the prototype action
    			if ( clipObject === null )
    				clipObject = prototypeAction._clip;

    		}

    		// clip must be known when specified via string
    		if ( clipObject === null ) return null;

    		// allocate all resources required to run it
    		const newAction = new AnimationAction( this, clipObject, optionalRoot, blendMode );

    		this._bindAction( newAction, prototypeAction );

    		// and make the action known to the memory manager
    		this._addInactiveAction( newAction, clipUuid, rootUuid );

    		return newAction;

    	}

    	// get an existing action
    	existingAction( clip, optionalRoot ) {

    		const root = optionalRoot || this._root,
    			rootUuid = root.uuid,

    			clipObject = typeof clip === 'string' ?
    				AnimationClip.findByName( root, clip ) : clip,

    			clipUuid = clipObject ? clipObject.uuid : clip,

    			actionsForClip = this._actionsByClip[ clipUuid ];

    		if ( actionsForClip !== undefined ) {

    			return actionsForClip.actionByRoot[ rootUuid ] || null;

    		}

    		return null;

    	}

    	// deactivates all previously scheduled actions
    	stopAllAction() {

    		const actions = this._actions,
    			nActions = this._nActiveActions;

    		for ( let i = nActions - 1; i >= 0; -- i ) {

    			actions[ i ].stop();

    		}

    		return this;

    	}

    	// advance the time and update apply the animation
    	update( deltaTime ) {

    		deltaTime *= this.timeScale;

    		const actions = this._actions,
    			nActions = this._nActiveActions,

    			time = this.time += deltaTime,
    			timeDirection = Math.sign( deltaTime ),

    			accuIndex = this._accuIndex ^= 1;

    		// run active actions

    		for ( let i = 0; i !== nActions; ++ i ) {

    			const action = actions[ i ];

    			action._update( time, deltaTime, timeDirection, accuIndex );

    		}

    		// update scene graph

    		const bindings = this._bindings,
    			nBindings = this._nActiveBindings;

    		for ( let i = 0; i !== nBindings; ++ i ) {

    			bindings[ i ].apply( accuIndex );

    		}

    		return this;

    	}

    	// Allows you to seek to a specific time in an animation.
    	setTime( timeInSeconds ) {

    		this.time = 0; // Zero out time attribute for AnimationMixer object;
    		for ( let i = 0; i < this._actions.length; i ++ ) {

    			this._actions[ i ].time = 0; // Zero out time attribute for all associated AnimationAction objects.

    		}

    		return this.update( timeInSeconds ); // Update used to set exact time. Returns "this" AnimationMixer object.

    	}

    	// return this mixer's root target object
    	getRoot() {

    		return this._root;

    	}

    	// free all resources specific to a particular clip
    	uncacheClip( clip ) {

    		const actions = this._actions,
    			clipUuid = clip.uuid,
    			actionsByClip = this._actionsByClip,
    			actionsForClip = actionsByClip[ clipUuid ];

    		if ( actionsForClip !== undefined ) {

    			// note: just calling _removeInactiveAction would mess up the
    			// iteration state and also require updating the state we can
    			// just throw away

    			const actionsToRemove = actionsForClip.knownActions;

    			for ( let i = 0, n = actionsToRemove.length; i !== n; ++ i ) {

    				const action = actionsToRemove[ i ];

    				this._deactivateAction( action );

    				const cacheIndex = action._cacheIndex,
    					lastInactiveAction = actions[ actions.length - 1 ];

    				action._cacheIndex = null;
    				action._byClipCacheIndex = null;

    				lastInactiveAction._cacheIndex = cacheIndex;
    				actions[ cacheIndex ] = lastInactiveAction;
    				actions.pop();

    				this._removeInactiveBindingsForAction( action );

    			}

    			delete actionsByClip[ clipUuid ];

    		}

    	}

    	// free all resources specific to a particular root target object
    	uncacheRoot( root ) {

    		const rootUuid = root.uuid,
    			actionsByClip = this._actionsByClip;

    		for ( const clipUuid in actionsByClip ) {

    			const actionByRoot = actionsByClip[ clipUuid ].actionByRoot,
    				action = actionByRoot[ rootUuid ];

    			if ( action !== undefined ) {

    				this._deactivateAction( action );
    				this._removeInactiveAction( action );

    			}

    		}

    		const bindingsByRoot = this._bindingsByRootAndName,
    			bindingByName = bindingsByRoot[ rootUuid ];

    		if ( bindingByName !== undefined ) {

    			for ( const trackName in bindingByName ) {

    				const binding = bindingByName[ trackName ];
    				binding.restoreOriginalState();
    				this._removeInactiveBinding( binding );

    			}

    		}

    	}

    	// remove a targeted clip from the cache
    	uncacheAction( clip, optionalRoot ) {

    		const action = this.existingAction( clip, optionalRoot );

    		if ( action !== null ) {

    			this._deactivateAction( action );
    			this._removeInactiveAction( action );

    		}

    	}

    }

    class Uniform {

    	constructor( value ) {

    		this.value = value;

    	}

    	clone() {

    		return new Uniform( this.value.clone === undefined ? this.value : this.value.clone() );

    	}

    }

    let id = 0;

    class UniformsGroup extends EventDispatcher {

    	constructor() {

    		super();

    		this.isUniformsGroup = true;

    		Object.defineProperty( this, 'id', { value: id ++ } );

    		this.name = '';

    		this.usage = StaticDrawUsage;
    		this.uniforms = [];

    	}

    	add( uniform ) {

    		this.uniforms.push( uniform );

    		return this;

    	}

    	remove( uniform ) {

    		const index = this.uniforms.indexOf( uniform );

    		if ( index !== - 1 ) this.uniforms.splice( index, 1 );

    		return this;

    	}

    	setName( name ) {

    		this.name = name;

    		return this;

    	}

    	setUsage( value ) {

    		this.usage = value;

    		return this;

    	}

    	dispose() {

    		this.dispatchEvent( { type: 'dispose' } );

    		return this;

    	}

    	copy( source ) {

    		this.name = source.name;
    		this.usage = source.usage;

    		const uniformsSource = source.uniforms;

    		this.uniforms.length = 0;

    		for ( let i = 0, l = uniformsSource.length; i < l; i ++ ) {

    			this.uniforms.push( uniformsSource[ i ].clone() );

    		}

    		return this;

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    }

    class InstancedInterleavedBuffer extends InterleavedBuffer {

    	constructor( array, stride, meshPerAttribute = 1 ) {

    		super( array, stride );

    		this.isInstancedInterleavedBuffer = true;

    		this.meshPerAttribute = meshPerAttribute;

    	}

    	copy( source ) {

    		super.copy( source );

    		this.meshPerAttribute = source.meshPerAttribute;

    		return this;

    	}

    	clone( data ) {

    		const ib = super.clone( data );

    		ib.meshPerAttribute = this.meshPerAttribute;

    		return ib;

    	}

    	toJSON( data ) {

    		const json = super.toJSON( data );

    		json.isInstancedInterleavedBuffer = true;
    		json.meshPerAttribute = this.meshPerAttribute;

    		return json;

    	}

    }

    class GLBufferAttribute {

    	constructor( buffer, type, itemSize, elementSize, count ) {

    		this.isGLBufferAttribute = true;

    		this.buffer = buffer;
    		this.type = type;
    		this.itemSize = itemSize;
    		this.elementSize = elementSize;
    		this.count = count;

    		this.version = 0;

    	}

    	set needsUpdate( value ) {

    		if ( value === true ) this.version ++;

    	}

    	setBuffer( buffer ) {

    		this.buffer = buffer;

    		return this;

    	}

    	setType( type, elementSize ) {

    		this.type = type;
    		this.elementSize = elementSize;

    		return this;

    	}

    	setItemSize( itemSize ) {

    		this.itemSize = itemSize;

    		return this;

    	}

    	setCount( count ) {

    		this.count = count;

    		return this;

    	}

    }

    class Raycaster {

    	constructor( origin, direction, near = 0, far = Infinity ) {

    		this.ray = new Ray( origin, direction );
    		// direction is assumed to be normalized (for accurate distance calculations)

    		this.near = near;
    		this.far = far;
    		this.camera = null;
    		this.layers = new Layers();

    		this.params = {
    			Mesh: {},
    			Line: { threshold: 1 },
    			LOD: {},
    			Points: { threshold: 1 },
    			Sprite: {}
    		};

    	}

    	set( origin, direction ) {

    		// direction is assumed to be normalized (for accurate distance calculations)

    		this.ray.set( origin, direction );

    	}

    	setFromCamera( coords, camera ) {

    		if ( camera.isPerspectiveCamera ) {

    			this.ray.origin.setFromMatrixPosition( camera.matrixWorld );
    			this.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();
    			this.camera = camera;

    		} else if ( camera.isOrthographicCamera ) {

    			this.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera ); // set origin in plane of camera
    			this.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );
    			this.camera = camera;

    		} else {

    			console.error( 'THREE.Raycaster: Unsupported camera type: ' + camera.type );

    		}

    	}

    	intersectObject( object, recursive = true, intersects = [] ) {

    		intersectObject( object, this, intersects, recursive );

    		intersects.sort( ascSort );

    		return intersects;

    	}

    	intersectObjects( objects, recursive = true, intersects = [] ) {

    		for ( let i = 0, l = objects.length; i < l; i ++ ) {

    			intersectObject( objects[ i ], this, intersects, recursive );

    		}

    		intersects.sort( ascSort );

    		return intersects;

    	}

    }

    function ascSort( a, b ) {

    	return a.distance - b.distance;

    }

    function intersectObject( object, raycaster, intersects, recursive ) {

    	if ( object.layers.test( raycaster.layers ) ) {

    		object.raycast( raycaster, intersects );

    	}

    	if ( recursive === true ) {

    		const children = object.children;

    		for ( let i = 0, l = children.length; i < l; i ++ ) {

    			intersectObject( children[ i ], raycaster, intersects, true );

    		}

    	}

    }

    /**
     * Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system
     *
     * The polar angle (phi) is measured from the positive y-axis. The positive y-axis is up.
     * The azimuthal angle (theta) is measured from the positive z-axis.
     */

    class Spherical {

    	constructor( radius = 1, phi = 0, theta = 0 ) {

    		this.radius = radius;
    		this.phi = phi; // polar angle
    		this.theta = theta; // azimuthal angle

    		return this;

    	}

    	set( radius, phi, theta ) {

    		this.radius = radius;
    		this.phi = phi;
    		this.theta = theta;

    		return this;

    	}

    	copy( other ) {

    		this.radius = other.radius;
    		this.phi = other.phi;
    		this.theta = other.theta;

    		return this;

    	}

    	// restrict phi to be between EPS and PI-EPS
    	makeSafe() {

    		const EPS = 0.000001;
    		this.phi = Math.max( EPS, Math.min( Math.PI - EPS, this.phi ) );

    		return this;

    	}

    	setFromVector3( v ) {

    		return this.setFromCartesianCoords( v.x, v.y, v.z );

    	}

    	setFromCartesianCoords( x, y, z ) {

    		this.radius = Math.sqrt( x * x + y * y + z * z );

    		if ( this.radius === 0 ) {

    			this.theta = 0;
    			this.phi = 0;

    		} else {

    			this.theta = Math.atan2( x, z );
    			this.phi = Math.acos( clamp( y / this.radius, - 1, 1 ) );

    		}

    		return this;

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    }

    /**
     * Ref: https://en.wikipedia.org/wiki/Cylindrical_coordinate_system
     */

    class Cylindrical {

    	constructor( radius = 1, theta = 0, y = 0 ) {

    		this.radius = radius; // distance from the origin to a point in the x-z plane
    		this.theta = theta; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis
    		this.y = y; // height above the x-z plane

    		return this;

    	}

    	set( radius, theta, y ) {

    		this.radius = radius;
    		this.theta = theta;
    		this.y = y;

    		return this;

    	}

    	copy( other ) {

    		this.radius = other.radius;
    		this.theta = other.theta;
    		this.y = other.y;

    		return this;

    	}

    	setFromVector3( v ) {

    		return this.setFromCartesianCoords( v.x, v.y, v.z );

    	}

    	setFromCartesianCoords( x, y, z ) {

    		this.radius = Math.sqrt( x * x + z * z );
    		this.theta = Math.atan2( x, z );
    		this.y = y;

    		return this;

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    }

    const _vector$4 = /*@__PURE__*/ new Vector2();

    class Box2 {

    	constructor( min = new Vector2( + Infinity, + Infinity ), max = new Vector2( - Infinity, - Infinity ) ) {

    		this.isBox2 = true;

    		this.min = min;
    		this.max = max;

    	}

    	set( min, max ) {

    		this.min.copy( min );
    		this.max.copy( max );

    		return this;

    	}

    	setFromPoints( points ) {

    		this.makeEmpty();

    		for ( let i = 0, il = points.length; i < il; i ++ ) {

    			this.expandByPoint( points[ i ] );

    		}

    		return this;

    	}

    	setFromCenterAndSize( center, size ) {

    		const halfSize = _vector$4.copy( size ).multiplyScalar( 0.5 );
    		this.min.copy( center ).sub( halfSize );
    		this.max.copy( center ).add( halfSize );

    		return this;

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    	copy( box ) {

    		this.min.copy( box.min );
    		this.max.copy( box.max );

    		return this;

    	}

    	makeEmpty() {

    		this.min.x = this.min.y = + Infinity;
    		this.max.x = this.max.y = - Infinity;

    		return this;

    	}

    	isEmpty() {

    		// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes

    		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );

    	}

    	getCenter( target ) {

    		return this.isEmpty() ? target.set( 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );

    	}

    	getSize( target ) {

    		return this.isEmpty() ? target.set( 0, 0 ) : target.subVectors( this.max, this.min );

    	}

    	expandByPoint( point ) {

    		this.min.min( point );
    		this.max.max( point );

    		return this;

    	}

    	expandByVector( vector ) {

    		this.min.sub( vector );
    		this.max.add( vector );

    		return this;

    	}

    	expandByScalar( scalar ) {

    		this.min.addScalar( - scalar );
    		this.max.addScalar( scalar );

    		return this;

    	}

    	containsPoint( point ) {

    		return point.x < this.min.x || point.x > this.max.x ||
    			point.y < this.min.y || point.y > this.max.y ? false : true;

    	}

    	containsBox( box ) {

    		return this.min.x <= box.min.x && box.max.x <= this.max.x &&
    			this.min.y <= box.min.y && box.max.y <= this.max.y;

    	}

    	getParameter( point, target ) {

    		// This can potentially have a divide by zero if the box
    		// has a size dimension of 0.

    		return target.set(
    			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
    			( point.y - this.min.y ) / ( this.max.y - this.min.y )
    		);

    	}

    	intersectsBox( box ) {

    		// using 4 splitting planes to rule out intersections

    		return box.max.x < this.min.x || box.min.x > this.max.x ||
    			box.max.y < this.min.y || box.min.y > this.max.y ? false : true;

    	}

    	clampPoint( point, target ) {

    		return target.copy( point ).clamp( this.min, this.max );

    	}

    	distanceToPoint( point ) {

    		const clampedPoint = _vector$4.copy( point ).clamp( this.min, this.max );
    		return clampedPoint.sub( point ).length();

    	}

    	intersect( box ) {

    		this.min.max( box.min );
    		this.max.min( box.max );

    		return this;

    	}

    	union( box ) {

    		this.min.min( box.min );
    		this.max.max( box.max );

    		return this;

    	}

    	translate( offset ) {

    		this.min.add( offset );
    		this.max.add( offset );

    		return this;

    	}

    	equals( box ) {

    		return box.min.equals( this.min ) && box.max.equals( this.max );

    	}

    }

    const _startP = /*@__PURE__*/ new Vector3();
    const _startEnd = /*@__PURE__*/ new Vector3();

    class Line3 {

    	constructor( start = new Vector3(), end = new Vector3() ) {

    		this.start = start;
    		this.end = end;

    	}

    	set( start, end ) {

    		this.start.copy( start );
    		this.end.copy( end );

    		return this;

    	}

    	copy( line ) {

    		this.start.copy( line.start );
    		this.end.copy( line.end );

    		return this;

    	}

    	getCenter( target ) {

    		return target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );

    	}

    	delta( target ) {

    		return target.subVectors( this.end, this.start );

    	}

    	distanceSq() {

    		return this.start.distanceToSquared( this.end );

    	}

    	distance() {

    		return this.start.distanceTo( this.end );

    	}

    	at( t, target ) {

    		return this.delta( target ).multiplyScalar( t ).add( this.start );

    	}

    	closestPointToPointParameter( point, clampToLine ) {

    		_startP.subVectors( point, this.start );
    		_startEnd.subVectors( this.end, this.start );

    		const startEnd2 = _startEnd.dot( _startEnd );
    		const startEnd_startP = _startEnd.dot( _startP );

    		let t = startEnd_startP / startEnd2;

    		if ( clampToLine ) {

    			t = clamp( t, 0, 1 );

    		}

    		return t;

    	}

    	closestPointToPoint( point, clampToLine, target ) {

    		const t = this.closestPointToPointParameter( point, clampToLine );

    		return this.delta( target ).multiplyScalar( t ).add( this.start );

    	}

    	applyMatrix4( matrix ) {

    		this.start.applyMatrix4( matrix );
    		this.end.applyMatrix4( matrix );

    		return this;

    	}

    	equals( line ) {

    		return line.start.equals( this.start ) && line.end.equals( this.end );

    	}

    	clone() {

    		return new this.constructor().copy( this );

    	}

    }

    const _vector$3 = /*@__PURE__*/ new Vector3();

    class SpotLightHelper extends Object3D {

    	constructor( light, color ) {

    		super();

    		this.light = light;
    		this.light.updateMatrixWorld();

    		this.matrix = light.matrixWorld;
    		this.matrixAutoUpdate = false;

    		this.color = color;

    		const geometry = new BufferGeometry();

    		const positions = [
    			0, 0, 0, 	0, 0, 1,
    			0, 0, 0, 	1, 0, 1,
    			0, 0, 0,	- 1, 0, 1,
    			0, 0, 0, 	0, 1, 1,
    			0, 0, 0, 	0, - 1, 1
    		];

    		for ( let i = 0, j = 1, l = 32; i < l; i ++, j ++ ) {

    			const p1 = ( i / l ) * Math.PI * 2;
    			const p2 = ( j / l ) * Math.PI * 2;

    			positions.push(
    				Math.cos( p1 ), Math.sin( p1 ), 1,
    				Math.cos( p2 ), Math.sin( p2 ), 1
    			);

    		}

    		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );

    		const material = new LineBasicMaterial( { fog: false, toneMapped: false } );

    		this.cone = new LineSegments( geometry, material );
    		this.add( this.cone );

    		this.update();

    	}

    	dispose() {

    		this.cone.geometry.dispose();
    		this.cone.material.dispose();

    	}

    	update() {

    		this.light.updateMatrixWorld();

    		const coneLength = this.light.distance ? this.light.distance : 1000;
    		const coneWidth = coneLength * Math.tan( this.light.angle );

    		this.cone.scale.set( coneWidth, coneWidth, coneLength );

    		_vector$3.setFromMatrixPosition( this.light.target.matrixWorld );

    		this.cone.lookAt( _vector$3 );

    		if ( this.color !== undefined ) {

    			this.cone.material.color.set( this.color );

    		} else {

    			this.cone.material.color.copy( this.light.color );

    		}

    	}

    }

    const _vector$2 = /*@__PURE__*/ new Vector3();
    const _boneMatrix = /*@__PURE__*/ new Matrix4();
    const _matrixWorldInv = /*@__PURE__*/ new Matrix4();


    class SkeletonHelper extends LineSegments {

    	constructor( object ) {

    		const bones = getBoneList( object );

    		const geometry = new BufferGeometry();

    		const vertices = [];
    		const colors = [];

    		const color1 = new Color( 0, 0, 1 );
    		const color2 = new Color( 0, 1, 0 );

    		for ( let i = 0; i < bones.length; i ++ ) {

    			const bone = bones[ i ];

    			if ( bone.parent && bone.parent.isBone ) {

    				vertices.push( 0, 0, 0 );
    				vertices.push( 0, 0, 0 );
    				colors.push( color1.r, color1.g, color1.b );
    				colors.push( color2.r, color2.g, color2.b );

    			}

    		}

    		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

    		const material = new LineBasicMaterial( { vertexColors: true, depthTest: false, depthWrite: false, toneMapped: false, transparent: true } );

    		super( geometry, material );

    		this.isSkeletonHelper = true;

    		this.type = 'SkeletonHelper';

    		this.root = object;
    		this.bones = bones;

    		this.matrix = object.matrixWorld;
    		this.matrixAutoUpdate = false;

    	}

    	updateMatrixWorld( force ) {

    		const bones = this.bones;

    		const geometry = this.geometry;
    		const position = geometry.getAttribute( 'position' );

    		_matrixWorldInv.copy( this.root.matrixWorld ).invert();

    		for ( let i = 0, j = 0; i < bones.length; i ++ ) {

    			const bone = bones[ i ];

    			if ( bone.parent && bone.parent.isBone ) {

    				_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.matrixWorld );
    				_vector$2.setFromMatrixPosition( _boneMatrix );
    				position.setXYZ( j, _vector$2.x, _vector$2.y, _vector$2.z );

    				_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.parent.matrixWorld );
    				_vector$2.setFromMatrixPosition( _boneMatrix );
    				position.setXYZ( j + 1, _vector$2.x, _vector$2.y, _vector$2.z );

    				j += 2;

    			}

    		}

    		geometry.getAttribute( 'position' ).needsUpdate = true;

    		super.updateMatrixWorld( force );

    	}

    	dispose() {

    		this.geometry.dispose();
    		this.material.dispose();

    	}

    }


    function getBoneList( object ) {

    	const boneList = [];

    	if ( object.isBone === true ) {

    		boneList.push( object );

    	}

    	for ( let i = 0; i < object.children.length; i ++ ) {

    		boneList.push.apply( boneList, getBoneList( object.children[ i ] ) );

    	}

    	return boneList;

    }

    class PointLightHelper extends Mesh {

    	constructor( light, sphereSize, color ) {

    		const geometry = new SphereGeometry( sphereSize, 4, 2 );
    		const material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );

    		super( geometry, material );

    		this.light = light;
    		this.light.updateMatrixWorld();

    		this.color = color;

    		this.type = 'PointLightHelper';

    		this.matrix = this.light.matrixWorld;
    		this.matrixAutoUpdate = false;

    		this.update();


    		/*
    	// TODO: delete this comment?
    	const distanceGeometry = new THREE.IcosahedronGeometry( 1, 2 );
    	const distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );

    	this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );
    	this.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );

    	const d = light.distance;

    	if ( d === 0.0 ) {

    		this.lightDistance.visible = false;

    	} else {

    		this.lightDistance.scale.set( d, d, d );

    	}

    	this.add( this.lightDistance );
    	*/

    	}

    	dispose() {

    		this.geometry.dispose();
    		this.material.dispose();

    	}

    	update() {

    		if ( this.color !== undefined ) {

    			this.material.color.set( this.color );

    		} else {

    			this.material.color.copy( this.light.color );

    		}

    		/*
    		const d = this.light.distance;

    		if ( d === 0.0 ) {

    			this.lightDistance.visible = false;

    		} else {

    			this.lightDistance.visible = true;
    			this.lightDistance.scale.set( d, d, d );

    		}
    		*/

    	}

    }

    const _vector$1 = /*@__PURE__*/ new Vector3();
    const _color1 = /*@__PURE__*/ new Color();
    const _color2 = /*@__PURE__*/ new Color();

    class HemisphereLightHelper extends Object3D {

    	constructor( light, size, color ) {

    		super();

    		this.light = light;
    		this.light.updateMatrixWorld();

    		this.matrix = light.matrixWorld;
    		this.matrixAutoUpdate = false;

    		this.color = color;

    		const geometry = new OctahedronGeometry( size );
    		geometry.rotateY( Math.PI * 0.5 );

    		this.material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );
    		if ( this.color === undefined ) this.material.vertexColors = true;

    		const position = geometry.getAttribute( 'position' );
    		const colors = new Float32Array( position.count * 3 );

    		geometry.setAttribute( 'color', new BufferAttribute( colors, 3 ) );

    		this.add( new Mesh( geometry, this.material ) );

    		this.update();

    	}

    	dispose() {

    		this.children[ 0 ].geometry.dispose();
    		this.children[ 0 ].material.dispose();

    	}

    	update() {

    		const mesh = this.children[ 0 ];

    		if ( this.color !== undefined ) {

    			this.material.color.set( this.color );

    		} else {

    			const colors = mesh.geometry.getAttribute( 'color' );

    			_color1.copy( this.light.color );
    			_color2.copy( this.light.groundColor );

    			for ( let i = 0, l = colors.count; i < l; i ++ ) {

    				const color = ( i < ( l / 2 ) ) ? _color1 : _color2;

    				colors.setXYZ( i, color.r, color.g, color.b );

    			}

    			colors.needsUpdate = true;

    		}

    		mesh.lookAt( _vector$1.setFromMatrixPosition( this.light.matrixWorld ).negate() );

    	}

    }

    class GridHelper extends LineSegments {

    	constructor( size = 10, divisions = 10, color1 = 0x444444, color2 = 0x888888 ) {

    		color1 = new Color( color1 );
    		color2 = new Color( color2 );

    		const center = divisions / 2;
    		const step = size / divisions;
    		const halfSize = size / 2;

    		const vertices = [], colors = [];

    		for ( let i = 0, j = 0, k = - halfSize; i <= divisions; i ++, k += step ) {

    			vertices.push( - halfSize, 0, k, halfSize, 0, k );
    			vertices.push( k, 0, - halfSize, k, 0, halfSize );

    			const color = i === center ? color1 : color2;

    			color.toArray( colors, j ); j += 3;
    			color.toArray( colors, j ); j += 3;
    			color.toArray( colors, j ); j += 3;
    			color.toArray( colors, j ); j += 3;

    		}

    		const geometry = new BufferGeometry();
    		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

    		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );

    		super( geometry, material );

    		this.type = 'GridHelper';

    	}

    	dispose() {

    		this.geometry.dispose();
    		this.material.dispose();

    	}

    }

    class PolarGridHelper extends LineSegments {

    	constructor( radius = 10, sectors = 16, rings = 8, divisions = 64, color1 = 0x444444, color2 = 0x888888 ) {

    		color1 = new Color( color1 );
    		color2 = new Color( color2 );

    		const vertices = [];
    		const colors = [];

    		// create the sectors

    		if ( sectors > 1 ) {

    			for ( let i = 0; i < sectors; i ++ ) {

    				const v = ( i / sectors ) * ( Math.PI * 2 );

    				const x = Math.sin( v ) * radius;
    				const z = Math.cos( v ) * radius;

    				vertices.push( 0, 0, 0 );
    				vertices.push( x, 0, z );

    				const color = ( i & 1 ) ? color1 : color2;

    				colors.push( color.r, color.g, color.b );
    				colors.push( color.r, color.g, color.b );

    			}

    		}

    		// create the rings

    		for ( let i = 0; i < rings; i ++ ) {

    			const color = ( i & 1 ) ? color1 : color2;

    			const r = radius - ( radius / rings * i );

    			for ( let j = 0; j < divisions; j ++ ) {

    				// first vertex

    				let v = ( j / divisions ) * ( Math.PI * 2 );

    				let x = Math.sin( v ) * r;
    				let z = Math.cos( v ) * r;

    				vertices.push( x, 0, z );
    				colors.push( color.r, color.g, color.b );

    				// second vertex

    				v = ( ( j + 1 ) / divisions ) * ( Math.PI * 2 );

    				x = Math.sin( v ) * r;
    				z = Math.cos( v ) * r;

    				vertices.push( x, 0, z );
    				colors.push( color.r, color.g, color.b );

    			}

    		}

    		const geometry = new BufferGeometry();
    		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

    		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );

    		super( geometry, material );

    		this.type = 'PolarGridHelper';

    	}

    	dispose() {

    		this.geometry.dispose();
    		this.material.dispose();

    	}

    }

    const _v1 = /*@__PURE__*/ new Vector3();
    const _v2 = /*@__PURE__*/ new Vector3();
    const _v3 = /*@__PURE__*/ new Vector3();

    class DirectionalLightHelper extends Object3D {

    	constructor( light, size, color ) {

    		super();

    		this.light = light;
    		this.light.updateMatrixWorld();

    		this.matrix = light.matrixWorld;
    		this.matrixAutoUpdate = false;

    		this.color = color;

    		if ( size === undefined ) size = 1;

    		let geometry = new BufferGeometry();
    		geometry.setAttribute( 'position', new Float32BufferAttribute( [
    			- size, size, 0,
    			size, size, 0,
    			size, - size, 0,
    			- size, - size, 0,
    			- size, size, 0
    		], 3 ) );

    		const material = new LineBasicMaterial( { fog: false, toneMapped: false } );

    		this.lightPlane = new Line( geometry, material );
    		this.add( this.lightPlane );

    		geometry = new BufferGeometry();
    		geometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 0, 1 ], 3 ) );

    		this.targetLine = new Line( geometry, material );
    		this.add( this.targetLine );

    		this.update();

    	}

    	dispose() {

    		this.lightPlane.geometry.dispose();
    		this.lightPlane.material.dispose();
    		this.targetLine.geometry.dispose();
    		this.targetLine.material.dispose();

    	}

    	update() {

    		_v1.setFromMatrixPosition( this.light.matrixWorld );
    		_v2.setFromMatrixPosition( this.light.target.matrixWorld );
    		_v3.subVectors( _v2, _v1 );

    		this.lightPlane.lookAt( _v2 );

    		if ( this.color !== undefined ) {

    			this.lightPlane.material.color.set( this.color );
    			this.targetLine.material.color.set( this.color );

    		} else {

    			this.lightPlane.material.color.copy( this.light.color );
    			this.targetLine.material.color.copy( this.light.color );

    		}

    		this.targetLine.lookAt( _v2 );
    		this.targetLine.scale.z = _v3.length();

    	}

    }

    const _vector = /*@__PURE__*/ new Vector3();
    const _camera = /*@__PURE__*/ new Camera();

    /**
     *	- shows frustum, line of sight and up of the camera
     *	- suitable for fast updates
     * 	- based on frustum visualization in lightgl.js shadowmap example
     *		https://github.com/evanw/lightgl.js/blob/master/tests/shadowmap.html
     */

    class CameraHelper extends LineSegments {

    	constructor( camera ) {

    		const geometry = new BufferGeometry();
    		const material = new LineBasicMaterial( { color: 0xffffff, vertexColors: true, toneMapped: false } );

    		const vertices = [];
    		const colors = [];

    		const pointMap = {};

    		// near

    		addLine( 'n1', 'n2' );
    		addLine( 'n2', 'n4' );
    		addLine( 'n4', 'n3' );
    		addLine( 'n3', 'n1' );

    		// far

    		addLine( 'f1', 'f2' );
    		addLine( 'f2', 'f4' );
    		addLine( 'f4', 'f3' );
    		addLine( 'f3', 'f1' );

    		// sides

    		addLine( 'n1', 'f1' );
    		addLine( 'n2', 'f2' );
    		addLine( 'n3', 'f3' );
    		addLine( 'n4', 'f4' );

    		// cone

    		addLine( 'p', 'n1' );
    		addLine( 'p', 'n2' );
    		addLine( 'p', 'n3' );
    		addLine( 'p', 'n4' );

    		// up

    		addLine( 'u1', 'u2' );
    		addLine( 'u2', 'u3' );
    		addLine( 'u3', 'u1' );

    		// target

    		addLine( 'c', 't' );
    		addLine( 'p', 'c' );

    		// cross

    		addLine( 'cn1', 'cn2' );
    		addLine( 'cn3', 'cn4' );

    		addLine( 'cf1', 'cf2' );
    		addLine( 'cf3', 'cf4' );

    		function addLine( a, b ) {

    			addPoint( a );
    			addPoint( b );

    		}

    		function addPoint( id ) {

    			vertices.push( 0, 0, 0 );
    			colors.push( 0, 0, 0 );

    			if ( pointMap[ id ] === undefined ) {

    				pointMap[ id ] = [];

    			}

    			pointMap[ id ].push( ( vertices.length / 3 ) - 1 );

    		}

    		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

    		super( geometry, material );

    		this.type = 'CameraHelper';

    		this.camera = camera;
    		if ( this.camera.updateProjectionMatrix ) this.camera.updateProjectionMatrix();

    		this.matrix = camera.matrixWorld;
    		this.matrixAutoUpdate = false;

    		this.pointMap = pointMap;

    		this.update();

    		// colors

    		const colorFrustum = new Color( 0xffaa00 );
    		const colorCone = new Color( 0xff0000 );
    		const colorUp = new Color( 0x00aaff );
    		const colorTarget = new Color( 0xffffff );
    		const colorCross = new Color( 0x333333 );

    		this.setColors( colorFrustum, colorCone, colorUp, colorTarget, colorCross );

    	}

    	setColors( frustum, cone, up, target, cross ) {

    		const geometry = this.geometry;

    		const colorAttribute = geometry.getAttribute( 'color' );

    		// near

    		colorAttribute.setXYZ( 0, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 1, frustum.r, frustum.g, frustum.b ); // n1, n2
    		colorAttribute.setXYZ( 2, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 3, frustum.r, frustum.g, frustum.b ); // n2, n4
    		colorAttribute.setXYZ( 4, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 5, frustum.r, frustum.g, frustum.b ); // n4, n3
    		colorAttribute.setXYZ( 6, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 7, frustum.r, frustum.g, frustum.b ); // n3, n1

    		// far

    		colorAttribute.setXYZ( 8, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 9, frustum.r, frustum.g, frustum.b ); // f1, f2
    		colorAttribute.setXYZ( 10, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 11, frustum.r, frustum.g, frustum.b ); // f2, f4
    		colorAttribute.setXYZ( 12, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 13, frustum.r, frustum.g, frustum.b ); // f4, f3
    		colorAttribute.setXYZ( 14, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 15, frustum.r, frustum.g, frustum.b ); // f3, f1

    		// sides

    		colorAttribute.setXYZ( 16, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 17, frustum.r, frustum.g, frustum.b ); // n1, f1
    		colorAttribute.setXYZ( 18, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 19, frustum.r, frustum.g, frustum.b ); // n2, f2
    		colorAttribute.setXYZ( 20, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 21, frustum.r, frustum.g, frustum.b ); // n3, f3
    		colorAttribute.setXYZ( 22, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 23, frustum.r, frustum.g, frustum.b ); // n4, f4

    		// cone

    		colorAttribute.setXYZ( 24, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 25, cone.r, cone.g, cone.b ); // p, n1
    		colorAttribute.setXYZ( 26, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 27, cone.r, cone.g, cone.b ); // p, n2
    		colorAttribute.setXYZ( 28, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 29, cone.r, cone.g, cone.b ); // p, n3
    		colorAttribute.setXYZ( 30, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 31, cone.r, cone.g, cone.b ); // p, n4

    		// up

    		colorAttribute.setXYZ( 32, up.r, up.g, up.b ); colorAttribute.setXYZ( 33, up.r, up.g, up.b ); // u1, u2
    		colorAttribute.setXYZ( 34, up.r, up.g, up.b ); colorAttribute.setXYZ( 35, up.r, up.g, up.b ); // u2, u3
    		colorAttribute.setXYZ( 36, up.r, up.g, up.b ); colorAttribute.setXYZ( 37, up.r, up.g, up.b ); // u3, u1

    		// target

    		colorAttribute.setXYZ( 38, target.r, target.g, target.b ); colorAttribute.setXYZ( 39, target.r, target.g, target.b ); // c, t
    		colorAttribute.setXYZ( 40, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 41, cross.r, cross.g, cross.b ); // p, c

    		// cross

    		colorAttribute.setXYZ( 42, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 43, cross.r, cross.g, cross.b ); // cn1, cn2
    		colorAttribute.setXYZ( 44, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 45, cross.r, cross.g, cross.b ); // cn3, cn4

    		colorAttribute.setXYZ( 46, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 47, cross.r, cross.g, cross.b ); // cf1, cf2
    		colorAttribute.setXYZ( 48, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 49, cross.r, cross.g, cross.b ); // cf3, cf4

    		colorAttribute.needsUpdate = true;

    	}

    	update() {

    		const geometry = this.geometry;
    		const pointMap = this.pointMap;

    		const w = 1, h = 1;

    		// we need just camera projection matrix inverse
    		// world matrix must be identity

    		_camera.projectionMatrixInverse.copy( this.camera.projectionMatrixInverse );

    		// center / target

    		setPoint( 'c', pointMap, geometry, _camera, 0, 0, - 1 );
    		setPoint( 't', pointMap, geometry, _camera, 0, 0, 1 );

    		// near

    		setPoint( 'n1', pointMap, geometry, _camera, - w, - h, - 1 );
    		setPoint( 'n2', pointMap, geometry, _camera, w, - h, - 1 );
    		setPoint( 'n3', pointMap, geometry, _camera, - w, h, - 1 );
    		setPoint( 'n4', pointMap, geometry, _camera, w, h, - 1 );

    		// far

    		setPoint( 'f1', pointMap, geometry, _camera, - w, - h, 1 );
    		setPoint( 'f2', pointMap, geometry, _camera, w, - h, 1 );
    		setPoint( 'f3', pointMap, geometry, _camera, - w, h, 1 );
    		setPoint( 'f4', pointMap, geometry, _camera, w, h, 1 );

    		// up

    		setPoint( 'u1', pointMap, geometry, _camera, w * 0.7, h * 1.1, - 1 );
    		setPoint( 'u2', pointMap, geometry, _camera, - w * 0.7, h * 1.1, - 1 );
    		setPoint( 'u3', pointMap, geometry, _camera, 0, h * 2, - 1 );

    		// cross

    		setPoint( 'cf1', pointMap, geometry, _camera, - w, 0, 1 );
    		setPoint( 'cf2', pointMap, geometry, _camera, w, 0, 1 );
    		setPoint( 'cf3', pointMap, geometry, _camera, 0, - h, 1 );
    		setPoint( 'cf4', pointMap, geometry, _camera, 0, h, 1 );

    		setPoint( 'cn1', pointMap, geometry, _camera, - w, 0, - 1 );
    		setPoint( 'cn2', pointMap, geometry, _camera, w, 0, - 1 );
    		setPoint( 'cn3', pointMap, geometry, _camera, 0, - h, - 1 );
    		setPoint( 'cn4', pointMap, geometry, _camera, 0, h, - 1 );

    		geometry.getAttribute( 'position' ).needsUpdate = true;

    	}

    	dispose() {

    		this.geometry.dispose();
    		this.material.dispose();

    	}

    }


    function setPoint( point, pointMap, geometry, camera, x, y, z ) {

    	_vector.set( x, y, z ).unproject( camera );

    	const points = pointMap[ point ];

    	if ( points !== undefined ) {

    		const position = geometry.getAttribute( 'position' );

    		for ( let i = 0, l = points.length; i < l; i ++ ) {

    			position.setXYZ( points[ i ], _vector.x, _vector.y, _vector.z );

    		}

    	}

    }

    const _box = /*@__PURE__*/ new Box3();

    class BoxHelper extends LineSegments {

    	constructor( object, color = 0xffff00 ) {

    		const indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
    		const positions = new Float32Array( 8 * 3 );

    		const geometry = new BufferGeometry();
    		geometry.setIndex( new BufferAttribute( indices, 1 ) );
    		geometry.setAttribute( 'position', new BufferAttribute( positions, 3 ) );

    		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );

    		this.object = object;
    		this.type = 'BoxHelper';

    		this.matrixAutoUpdate = false;

    		this.update();

    	}

    	update( object ) {

    		if ( object !== undefined ) {

    			console.warn( 'THREE.BoxHelper: .update() has no longer arguments.' );

    		}

    		if ( this.object !== undefined ) {

    			_box.setFromObject( this.object );

    		}

    		if ( _box.isEmpty() ) return;

    		const min = _box.min;
    		const max = _box.max;

    		/*
    			5____4
    		1/___0/|
    		| 6__|_7
    		2/___3/

    		0: max.x, max.y, max.z
    		1: min.x, max.y, max.z
    		2: min.x, min.y, max.z
    		3: max.x, min.y, max.z
    		4: max.x, max.y, min.z
    		5: min.x, max.y, min.z
    		6: min.x, min.y, min.z
    		7: max.x, min.y, min.z
    		*/

    		const position = this.geometry.attributes.position;
    		const array = position.array;

    		array[ 0 ] = max.x; array[ 1 ] = max.y; array[ 2 ] = max.z;
    		array[ 3 ] = min.x; array[ 4 ] = max.y; array[ 5 ] = max.z;
    		array[ 6 ] = min.x; array[ 7 ] = min.y; array[ 8 ] = max.z;
    		array[ 9 ] = max.x; array[ 10 ] = min.y; array[ 11 ] = max.z;
    		array[ 12 ] = max.x; array[ 13 ] = max.y; array[ 14 ] = min.z;
    		array[ 15 ] = min.x; array[ 16 ] = max.y; array[ 17 ] = min.z;
    		array[ 18 ] = min.x; array[ 19 ] = min.y; array[ 20 ] = min.z;
    		array[ 21 ] = max.x; array[ 22 ] = min.y; array[ 23 ] = min.z;

    		position.needsUpdate = true;

    		this.geometry.computeBoundingSphere();

    	}

    	setFromObject( object ) {

    		this.object = object;
    		this.update();

    		return this;

    	}

    	copy( source, recursive ) {

    		super.copy( source, recursive );

    		this.object = source.object;

    		return this;

    	}

    	dispose() {

    		this.geometry.dispose();
    		this.material.dispose();

    	}

    }

    class Box3Helper extends LineSegments {

    	constructor( box, color = 0xffff00 ) {

    		const indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );

    		const positions = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 1, - 1, 1, - 1, - 1 ];

    		const geometry = new BufferGeometry();

    		geometry.setIndex( new BufferAttribute( indices, 1 ) );

    		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );

    		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );

    		this.box = box;

    		this.type = 'Box3Helper';

    		this.geometry.computeBoundingSphere();

    	}

    	updateMatrixWorld( force ) {

    		const box = this.box;

    		if ( box.isEmpty() ) return;

    		box.getCenter( this.position );

    		box.getSize( this.scale );

    		this.scale.multiplyScalar( 0.5 );

    		super.updateMatrixWorld( force );

    	}

    	dispose() {

    		this.geometry.dispose();
    		this.material.dispose();

    	}

    }

    class PlaneHelper extends Line {

    	constructor( plane, size = 1, hex = 0xffff00 ) {

    		const color = hex;

    		const positions = [ 1, - 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, - 1, 0, 1, 1, 0 ];

    		const geometry = new BufferGeometry();
    		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
    		geometry.computeBoundingSphere();

    		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );

    		this.type = 'PlaneHelper';

    		this.plane = plane;

    		this.size = size;

    		const positions2 = [ 1, 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, 1, 0, - 1, - 1, 0, 1, - 1, 0 ];

    		const geometry2 = new BufferGeometry();
    		geometry2.setAttribute( 'position', new Float32BufferAttribute( positions2, 3 ) );
    		geometry2.computeBoundingSphere();

    		this.add( new Mesh( geometry2, new MeshBasicMaterial( { color: color, opacity: 0.2, transparent: true, depthWrite: false, toneMapped: false } ) ) );

    	}

    	updateMatrixWorld( force ) {

    		this.position.set( 0, 0, 0 );

    		this.scale.set( 0.5 * this.size, 0.5 * this.size, 1 );

    		this.lookAt( this.plane.normal );

    		this.translateZ( - this.plane.constant );

    		super.updateMatrixWorld( force );

    	}

    	dispose() {

    		this.geometry.dispose();
    		this.material.dispose();
    		this.children[ 0 ].geometry.dispose();
    		this.children[ 0 ].material.dispose();

    	}

    }

    const _axis = /*@__PURE__*/ new Vector3();
    let _lineGeometry, _coneGeometry;

    class ArrowHelper extends Object3D {

    	// dir is assumed to be normalized

    	constructor( dir = new Vector3( 0, 0, 1 ), origin = new Vector3( 0, 0, 0 ), length = 1, color = 0xffff00, headLength = length * 0.2, headWidth = headLength * 0.2 ) {

    		super();

    		this.type = 'ArrowHelper';

    		if ( _lineGeometry === undefined ) {

    			_lineGeometry = new BufferGeometry();
    			_lineGeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 1, 0 ], 3 ) );

    			_coneGeometry = new CylinderGeometry( 0, 0.5, 1, 5, 1 );
    			_coneGeometry.translate( 0, - 0.5, 0 );

    		}

    		this.position.copy( origin );

    		this.line = new Line( _lineGeometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
    		this.line.matrixAutoUpdate = false;
    		this.add( this.line );

    		this.cone = new Mesh( _coneGeometry, new MeshBasicMaterial( { color: color, toneMapped: false } ) );
    		this.cone.matrixAutoUpdate = false;
    		this.add( this.cone );

    		this.setDirection( dir );
    		this.setLength( length, headLength, headWidth );

    	}

    	setDirection( dir ) {

    		// dir is assumed to be normalized

    		if ( dir.y > 0.99999 ) {

    			this.quaternion.set( 0, 0, 0, 1 );

    		} else if ( dir.y < - 0.99999 ) {

    			this.quaternion.set( 1, 0, 0, 0 );

    		} else {

    			_axis.set( dir.z, 0, - dir.x ).normalize();

    			const radians = Math.acos( dir.y );

    			this.quaternion.setFromAxisAngle( _axis, radians );

    		}

    	}

    	setLength( length, headLength = length * 0.2, headWidth = headLength * 0.2 ) {

    		this.line.scale.set( 1, Math.max( 0.0001, length - headLength ), 1 ); // see #17458
    		this.line.updateMatrix();

    		this.cone.scale.set( headWidth, headLength, headWidth );
    		this.cone.position.y = length;
    		this.cone.updateMatrix();

    	}

    	setColor( color ) {

    		this.line.material.color.set( color );
    		this.cone.material.color.set( color );

    	}

    	copy( source ) {

    		super.copy( source, false );

    		this.line.copy( source.line );
    		this.cone.copy( source.cone );

    		return this;

    	}

    	dispose() {

    		this.line.geometry.dispose();
    		this.line.material.dispose();
    		this.cone.geometry.dispose();
    		this.cone.material.dispose();

    	}

    }

    class AxesHelper extends LineSegments {

    	constructor( size = 1 ) {

    		const vertices = [
    			0, 0, 0,	size, 0, 0,
    			0, 0, 0,	0, size, 0,
    			0, 0, 0,	0, 0, size
    		];

    		const colors = [
    			1, 0, 0,	1, 0.6, 0,
    			0, 1, 0,	0.6, 1, 0,
    			0, 0, 1,	0, 0.6, 1
    		];

    		const geometry = new BufferGeometry();
    		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

    		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );

    		super( geometry, material );

    		this.type = 'AxesHelper';

    	}

    	setColors( xAxisColor, yAxisColor, zAxisColor ) {

    		const color = new Color();
    		const array = this.geometry.attributes.color.array;

    		color.set( xAxisColor );
    		color.toArray( array, 0 );
    		color.toArray( array, 3 );

    		color.set( yAxisColor );
    		color.toArray( array, 6 );
    		color.toArray( array, 9 );

    		color.set( zAxisColor );
    		color.toArray( array, 12 );
    		color.toArray( array, 15 );

    		this.geometry.attributes.color.needsUpdate = true;

    		return this;

    	}

    	dispose() {

    		this.geometry.dispose();
    		this.material.dispose();

    	}

    }

    class ShapePath {

    	constructor() {

    		this.type = 'ShapePath';

    		this.color = new Color();

    		this.subPaths = [];
    		this.currentPath = null;

    	}

    	moveTo( x, y ) {

    		this.currentPath = new Path();
    		this.subPaths.push( this.currentPath );
    		this.currentPath.moveTo( x, y );

    		return this;

    	}

    	lineTo( x, y ) {

    		this.currentPath.lineTo( x, y );

    		return this;

    	}

    	quadraticCurveTo( aCPx, aCPy, aX, aY ) {

    		this.currentPath.quadraticCurveTo( aCPx, aCPy, aX, aY );

    		return this;

    	}

    	bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {

    		this.currentPath.bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY );

    		return this;

    	}

    	splineThru( pts ) {

    		this.currentPath.splineThru( pts );

    		return this;

    	}

    	toShapes( isCCW ) {

    		function toShapesNoHoles( inSubpaths ) {

    			const shapes = [];

    			for ( let i = 0, l = inSubpaths.length; i < l; i ++ ) {

    				const tmpPath = inSubpaths[ i ];

    				const tmpShape = new Shape();
    				tmpShape.curves = tmpPath.curves;

    				shapes.push( tmpShape );

    			}

    			return shapes;

    		}

    		function isPointInsidePolygon( inPt, inPolygon ) {

    			const polyLen = inPolygon.length;

    			// inPt on polygon contour => immediate success    or
    			// toggling of inside/outside at every single! intersection point of an edge
    			//  with the horizontal line through inPt, left of inPt
    			//  not counting lowerY endpoints of edges and whole edges on that line
    			let inside = false;
    			for ( let p = polyLen - 1, q = 0; q < polyLen; p = q ++ ) {

    				let edgeLowPt = inPolygon[ p ];
    				let edgeHighPt = inPolygon[ q ];

    				let edgeDx = edgeHighPt.x - edgeLowPt.x;
    				let edgeDy = edgeHighPt.y - edgeLowPt.y;

    				if ( Math.abs( edgeDy ) > Number.EPSILON ) {

    					// not parallel
    					if ( edgeDy < 0 ) {

    						edgeLowPt = inPolygon[ q ]; edgeDx = - edgeDx;
    						edgeHighPt = inPolygon[ p ]; edgeDy = - edgeDy;

    					}

    					if ( ( inPt.y < edgeLowPt.y ) || ( inPt.y > edgeHighPt.y ) ) 		continue;

    					if ( inPt.y === edgeLowPt.y ) {

    						if ( inPt.x === edgeLowPt.x )		return	true;		// inPt is on contour ?
    						// continue;				// no intersection or edgeLowPt => doesn't count !!!

    					} else {

    						const perpEdge = edgeDy * ( inPt.x - edgeLowPt.x ) - edgeDx * ( inPt.y - edgeLowPt.y );
    						if ( perpEdge === 0 )				return	true;		// inPt is on contour ?
    						if ( perpEdge < 0 ) 				continue;
    						inside = ! inside;		// true intersection left of inPt

    					}

    				} else {

    					// parallel or collinear
    					if ( inPt.y !== edgeLowPt.y ) 		continue;			// parallel
    					// edge lies on the same horizontal line as inPt
    					if ( ( ( edgeHighPt.x <= inPt.x ) && ( inPt.x <= edgeLowPt.x ) ) ||
    						 ( ( edgeLowPt.x <= inPt.x ) && ( inPt.x <= edgeHighPt.x ) ) )		return	true;	// inPt: Point on contour !
    					// continue;

    				}

    			}

    			return	inside;

    		}

    		const isClockWise = ShapeUtils.isClockWise;

    		const subPaths = this.subPaths;
    		if ( subPaths.length === 0 ) return [];

    		let solid, tmpPath, tmpShape;
    		const shapes = [];

    		if ( subPaths.length === 1 ) {

    			tmpPath = subPaths[ 0 ];
    			tmpShape = new Shape();
    			tmpShape.curves = tmpPath.curves;
    			shapes.push( tmpShape );
    			return shapes;

    		}

    		let holesFirst = ! isClockWise( subPaths[ 0 ].getPoints() );
    		holesFirst = isCCW ? ! holesFirst : holesFirst;

    		// console.log("Holes first", holesFirst);

    		const betterShapeHoles = [];
    		const newShapes = [];
    		let newShapeHoles = [];
    		let mainIdx = 0;
    		let tmpPoints;

    		newShapes[ mainIdx ] = undefined;
    		newShapeHoles[ mainIdx ] = [];

    		for ( let i = 0, l = subPaths.length; i < l; i ++ ) {

    			tmpPath = subPaths[ i ];
    			tmpPoints = tmpPath.getPoints();
    			solid = isClockWise( tmpPoints );
    			solid = isCCW ? ! solid : solid;

    			if ( solid ) {

    				if ( ( ! holesFirst ) && ( newShapes[ mainIdx ] ) )	mainIdx ++;

    				newShapes[ mainIdx ] = { s: new Shape(), p: tmpPoints };
    				newShapes[ mainIdx ].s.curves = tmpPath.curves;

    				if ( holesFirst )	mainIdx ++;
    				newShapeHoles[ mainIdx ] = [];

    				//console.log('cw', i);

    			} else {

    				newShapeHoles[ mainIdx ].push( { h: tmpPath, p: tmpPoints[ 0 ] } );

    				//console.log('ccw', i);

    			}

    		}

    		// only Holes? -> probably all Shapes with wrong orientation
    		if ( ! newShapes[ 0 ] )	return	toShapesNoHoles( subPaths );


    		if ( newShapes.length > 1 ) {

    			let ambiguous = false;
    			let toChange = 0;

    			for ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {

    				betterShapeHoles[ sIdx ] = [];

    			}

    			for ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {

    				const sho = newShapeHoles[ sIdx ];

    				for ( let hIdx = 0; hIdx < sho.length; hIdx ++ ) {

    					const ho = sho[ hIdx ];
    					let hole_unassigned = true;

    					for ( let s2Idx = 0; s2Idx < newShapes.length; s2Idx ++ ) {

    						if ( isPointInsidePolygon( ho.p, newShapes[ s2Idx ].p ) ) {

    							if ( sIdx !== s2Idx )	toChange ++;

    							if ( hole_unassigned ) {

    								hole_unassigned = false;
    								betterShapeHoles[ s2Idx ].push( ho );

    							} else {

    								ambiguous = true;

    							}

    						}

    					}

    					if ( hole_unassigned ) {

    						betterShapeHoles[ sIdx ].push( ho );

    					}

    				}

    			}

    			if ( toChange > 0 && ambiguous === false ) {

    				newShapeHoles = betterShapeHoles;

    			}

    		}

    		let tmpHoles;

    		for ( let i = 0, il = newShapes.length; i < il; i ++ ) {

    			tmpShape = newShapes[ i ].s;
    			shapes.push( tmpShape );
    			tmpHoles = newShapeHoles[ i ];

    			for ( let j = 0, jl = tmpHoles.length; j < jl; j ++ ) {

    				tmpShape.holes.push( tmpHoles[ j ].h );

    			}

    		}

    		//console.log("shape", shapes);

    		return shapes;

    	}

    }

    // Fast Half Float Conversions, http://www.fox-toolkit.org/ftp/fasthalffloatconversion.pdf

    const _tables = /*@__PURE__*/ _generateTables();

    function _generateTables() {

    	// float32 to float16 helpers

    	const buffer = new ArrayBuffer( 4 );
    	const floatView = new Float32Array( buffer );
    	const uint32View = new Uint32Array( buffer );

    	const baseTable = new Uint32Array( 512 );
    	const shiftTable = new Uint32Array( 512 );

    	for ( let i = 0; i < 256; ++ i ) {

    		const e = i - 127;

    		// very small number (0, -0)

    		if ( e < - 27 ) {

    			baseTable[ i ] = 0x0000;
    			baseTable[ i | 0x100 ] = 0x8000;
    			shiftTable[ i ] = 24;
    			shiftTable[ i | 0x100 ] = 24;

    			// small number (denorm)

    		} else if ( e < - 14 ) {

    			baseTable[ i ] = 0x0400 >> ( - e - 14 );
    			baseTable[ i | 0x100 ] = ( 0x0400 >> ( - e - 14 ) ) | 0x8000;
    			shiftTable[ i ] = - e - 1;
    			shiftTable[ i | 0x100 ] = - e - 1;

    			// normal number

    		} else if ( e <= 15 ) {

    			baseTable[ i ] = ( e + 15 ) << 10;
    			baseTable[ i | 0x100 ] = ( ( e + 15 ) << 10 ) | 0x8000;
    			shiftTable[ i ] = 13;
    			shiftTable[ i | 0x100 ] = 13;

    			// large number (Infinity, -Infinity)

    		} else if ( e < 128 ) {

    			baseTable[ i ] = 0x7c00;
    			baseTable[ i | 0x100 ] = 0xfc00;
    			shiftTable[ i ] = 24;
    			shiftTable[ i | 0x100 ] = 24;

    			// stay (NaN, Infinity, -Infinity)

    		} else {

    			baseTable[ i ] = 0x7c00;
    			baseTable[ i | 0x100 ] = 0xfc00;
    			shiftTable[ i ] = 13;
    			shiftTable[ i | 0x100 ] = 13;

    		}

    	}

    	// float16 to float32 helpers

    	const mantissaTable = new Uint32Array( 2048 );
    	const exponentTable = new Uint32Array( 64 );
    	const offsetTable = new Uint32Array( 64 );

    	for ( let i = 1; i < 1024; ++ i ) {

    		let m = i << 13; // zero pad mantissa bits
    		let e = 0; // zero exponent

    		// normalized
    		while ( ( m & 0x00800000 ) === 0 ) {

    			m <<= 1;
    			e -= 0x00800000; // decrement exponent

    		}

    		m &= ~ 0x00800000; // clear leading 1 bit
    		e += 0x38800000; // adjust bias

    		mantissaTable[ i ] = m | e;

    	}

    	for ( let i = 1024; i < 2048; ++ i ) {

    		mantissaTable[ i ] = 0x38000000 + ( ( i - 1024 ) << 13 );

    	}

    	for ( let i = 1; i < 31; ++ i ) {

    		exponentTable[ i ] = i << 23;

    	}

    	exponentTable[ 31 ] = 0x47800000;
    	exponentTable[ 32 ] = 0x80000000;

    	for ( let i = 33; i < 63; ++ i ) {

    		exponentTable[ i ] = 0x80000000 + ( ( i - 32 ) << 23 );

    	}

    	exponentTable[ 63 ] = 0xc7800000;

    	for ( let i = 1; i < 64; ++ i ) {

    		if ( i !== 32 ) {

    			offsetTable[ i ] = 1024;

    		}

    	}

    	return {
    		floatView: floatView,
    		uint32View: uint32View,
    		baseTable: baseTable,
    		shiftTable: shiftTable,
    		mantissaTable: mantissaTable,
    		exponentTable: exponentTable,
    		offsetTable: offsetTable
    	};

    }

    // float32 to float16

    function toHalfFloat( val ) {

    	if ( Math.abs( val ) > 65504 ) console.warn( 'THREE.DataUtils.toHalfFloat(): Value out of range.' );

    	val = clamp( val, - 65504, 65504 );

    	_tables.floatView[ 0 ] = val;
    	const f = _tables.uint32View[ 0 ];
    	const e = ( f >> 23 ) & 0x1ff;
    	return _tables.baseTable[ e ] + ( ( f & 0x007fffff ) >> _tables.shiftTable[ e ] );

    }

    // float16 to float32

    function fromHalfFloat( val ) {

    	const m = val >> 10;
    	_tables.uint32View[ 0 ] = _tables.mantissaTable[ _tables.offsetTable[ m ] + ( val & 0x3ff ) ] + _tables.exponentTable[ m ];
    	return _tables.floatView[ 0 ];

    }

    var DataUtils = /*#__PURE__*/Object.freeze({
    	__proto__: null,
    	toHalfFloat: toHalfFloat,
    	fromHalfFloat: fromHalfFloat
    });

    // r134, d65e0af06644fe5a84a6fc0e372f4318f95a04c0

    function ImmediateRenderObject() {

    	console.error( 'THREE.ImmediateRenderObject has been removed.' );

    }

    // r138, 48b05d3500acc084df50be9b4c90781ad9b8cb17

    class WebGLMultisampleRenderTarget extends WebGLRenderTarget {

    	constructor( width, height, options ) {

    		console.error( 'THREE.WebGLMultisampleRenderTarget has been removed. Use a normal render target and set the "samples" property to greater 0 to enable multisampling.' );
    		super( width, height, options );
    		this.samples = 4;

    	}

    }

    // r138, f9cd9cab03b7b64244e304900a3a2eeaa3a588ce

    class DataTexture2DArray extends DataArrayTexture {

    	constructor( data, width, height, depth ) {

    		console.warn( 'THREE.DataTexture2DArray has been renamed to DataArrayTexture.' );
    		super( data, width, height, depth );

    	}

    }

    // r138, f9cd9cab03b7b64244e304900a3a2eeaa3a588ce

    class DataTexture3D extends Data3DTexture {

    	constructor( data, width, height, depth ) {

    		console.warn( 'THREE.DataTexture3D has been renamed to Data3DTexture.' );
    		super( data, width, height, depth );

    	}

    }

    // r144

    class BoxBufferGeometry extends BoxGeometry {

    	constructor( width, height, depth, widthSegments, heightSegments, depthSegments ) {

    		console.warn( 'THREE.BoxBufferGeometry has been renamed to THREE.BoxGeometry.' );
    		super( width, height, depth, widthSegments, heightSegments, depthSegments );


    	}

    }

    // r144

    class CapsuleBufferGeometry extends CapsuleGeometry {

    	constructor( radius, length, capSegments, radialSegments ) {

    		console.warn( 'THREE.CapsuleBufferGeometry has been renamed to THREE.CapsuleGeometry.' );
    		super( radius, length, capSegments, radialSegments );

    	}

    }

    // r144

    class CircleBufferGeometry extends CircleGeometry {

    	constructor( radius, segments, thetaStart, thetaLength ) {

    		console.warn( 'THREE.CircleBufferGeometry has been renamed to THREE.CircleGeometry.' );
    		super( radius, segments, thetaStart, thetaLength );

    	}

    }

    // r144

    class ConeBufferGeometry extends ConeGeometry {

    	constructor( radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {

    		console.warn( 'THREE.ConeBufferGeometry has been renamed to THREE.ConeGeometry.' );
    		super( radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );

    	}

    }

    // r144

    class CylinderBufferGeometry extends CylinderGeometry {

    	constructor( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {

    		console.warn( 'THREE.CylinderBufferGeometry has been renamed to THREE.CylinderGeometry.' );
    		super( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );

    	}

    }

    // r144

    class DodecahedronBufferGeometry extends DodecahedronGeometry {

    	constructor( radius, detail ) {

    		console.warn( 'THREE.DodecahedronBufferGeometry has been renamed to THREE.DodecahedronGeometry.' );
    		super( radius, detail );

    	}

    }

    // r144

    class ExtrudeBufferGeometry extends ExtrudeGeometry {

    	constructor( shapes, options ) {

    		console.warn( 'THREE.ExtrudeBufferGeometry has been renamed to THREE.ExtrudeGeometry.' );
    		super( shapes, options );

    	}

    }

    // r144

    class IcosahedronBufferGeometry extends IcosahedronGeometry {

    	constructor( radius, detail ) {

    		console.warn( 'THREE.IcosahedronBufferGeometry has been renamed to THREE.IcosahedronGeometry.' );
    		super( radius, detail );

    	}

    }

    // r144

    class LatheBufferGeometry extends LatheGeometry {

    	constructor( points, segments, phiStart, phiLength ) {

    		console.warn( 'THREE.LatheBufferGeometry has been renamed to THREE.LatheGeometry.' );
    		super( points, segments, phiStart, phiLength );

    	}

    }

    // r144

    class OctahedronBufferGeometry extends OctahedronGeometry {

    	constructor( radius, detail ) {

    		console.warn( 'THREE.OctahedronBufferGeometry has been renamed to THREE.OctahedronGeometry.' );
    		super( radius, detail );

    	}

    }

    // r144

    class PlaneBufferGeometry extends PlaneGeometry {

    	constructor( width, height, widthSegments, heightSegments ) {

    		console.warn( 'THREE.PlaneBufferGeometry has been renamed to THREE.PlaneGeometry.' );
    		super( width, height, widthSegments, heightSegments );

    	}

    }

    // r144

    class PolyhedronBufferGeometry extends PolyhedronGeometry {

    	constructor( vertices, indices, radius, detail ) {

    		console.warn( 'THREE.PolyhedronBufferGeometry has been renamed to THREE.PolyhedronGeometry.' );
    		super( vertices, indices, radius, detail );

    	}

    }

    // r144

    class RingBufferGeometry extends RingGeometry {

    	constructor( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) {

    		console.warn( 'THREE.RingBufferGeometry has been renamed to THREE.RingGeometry.' );
    		super( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength );

    	}

    }

    // r144

    class ShapeBufferGeometry extends ShapeGeometry {

    	constructor( shapes, curveSegments ) {

    		console.warn( 'THREE.ShapeBufferGeometry has been renamed to THREE.ShapeGeometry.' );
    		super( shapes, curveSegments );

    	}

    }

    // r144

    class SphereBufferGeometry extends SphereGeometry {

    	constructor( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) {

    		console.warn( 'THREE.SphereBufferGeometry has been renamed to THREE.SphereGeometry.' );
    		super( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength );

    	}

    }

    // r144

    class TetrahedronBufferGeometry extends TetrahedronGeometry {

    	constructor( radius, detail ) {

    		console.warn( 'THREE.TetrahedronBufferGeometry has been renamed to THREE.TetrahedronGeometry.' );
    		super( radius, detail );

    	}

    }

    // r144

    class TorusBufferGeometry extends TorusGeometry {

    	constructor( radius, tube, radialSegments, tubularSegments, arc ) {

    		console.warn( 'THREE.TorusBufferGeometry has been renamed to THREE.TorusGeometry.' );
    		super( radius, tube, radialSegments, tubularSegments, arc );

    	}

    }

    // r144

    class TorusKnotBufferGeometry extends TorusKnotGeometry {

    	constructor( radius, tube, tubularSegments, radialSegments, p, q ) {

    		console.warn( 'THREE.TorusKnotBufferGeometry has been renamed to THREE.TorusKnotGeometry.' );
    		super( radius, tube, tubularSegments, radialSegments, p, q );

    	}

    }

    // r144

    class TubeBufferGeometry extends TubeGeometry {

    	constructor( path, tubularSegments, radius, radialSegments, closed ) {

    		console.warn( 'THREE.TubeBufferGeometry has been renamed to THREE.TubeGeometry.' );
    		super( path, tubularSegments, radius, radialSegments, closed );

    	}

    }

    if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {

    	__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'register', { detail: {
    		revision: REVISION,
    	} } ) );

    }

    if ( typeof window !== 'undefined' ) {

    	if ( window.__THREE__ ) {

    		console.warn( 'WARNING: Multiple instances of Three.js being imported.' );

    	} else {

    		window.__THREE__ = REVISION;

    	}

    }

    var THREE = /*#__PURE__*/Object.freeze({
        __proto__: null,
        ACESFilmicToneMapping: ACESFilmicToneMapping,
        AddEquation: AddEquation,
        AddOperation: AddOperation,
        AdditiveAnimationBlendMode: AdditiveAnimationBlendMode,
        AdditiveBlending: AdditiveBlending,
        AlphaFormat: AlphaFormat,
        AlwaysDepth: AlwaysDepth,
        AlwaysStencilFunc: AlwaysStencilFunc,
        AmbientLight: AmbientLight,
        AmbientLightProbe: AmbientLightProbe,
        AnimationClip: AnimationClip,
        AnimationLoader: AnimationLoader,
        AnimationMixer: AnimationMixer,
        AnimationObjectGroup: AnimationObjectGroup,
        AnimationUtils: AnimationUtils,
        ArcCurve: ArcCurve,
        ArrayCamera: ArrayCamera,
        ArrowHelper: ArrowHelper,
        Audio: Audio,
        AudioAnalyser: AudioAnalyser,
        AudioContext: AudioContext,
        AudioListener: AudioListener,
        AudioLoader: AudioLoader,
        AxesHelper: AxesHelper,
        BackSide: BackSide,
        BasicDepthPacking: BasicDepthPacking,
        BasicShadowMap: BasicShadowMap,
        Bone: Bone,
        BooleanKeyframeTrack: BooleanKeyframeTrack,
        Box2: Box2,
        Box3: Box3,
        Box3Helper: Box3Helper,
        BoxBufferGeometry: BoxBufferGeometry,
        BoxGeometry: BoxGeometry,
        BoxHelper: BoxHelper,
        BufferAttribute: BufferAttribute,
        BufferGeometry: BufferGeometry,
        BufferGeometryLoader: BufferGeometryLoader,
        ByteType: ByteType,
        Cache: Cache,
        Camera: Camera,
        CameraHelper: CameraHelper,
        CanvasTexture: CanvasTexture,
        CapsuleBufferGeometry: CapsuleBufferGeometry,
        CapsuleGeometry: CapsuleGeometry,
        CatmullRomCurve3: CatmullRomCurve3,
        CineonToneMapping: CineonToneMapping,
        CircleBufferGeometry: CircleBufferGeometry,
        CircleGeometry: CircleGeometry,
        ClampToEdgeWrapping: ClampToEdgeWrapping,
        Clock: Clock,
        Color: Color,
        ColorKeyframeTrack: ColorKeyframeTrack,
        ColorManagement: ColorManagement,
        CompressedTexture: CompressedTexture,
        CompressedTextureLoader: CompressedTextureLoader,
        ConeBufferGeometry: ConeBufferGeometry,
        ConeGeometry: ConeGeometry,
        CubeCamera: CubeCamera,
        CubeReflectionMapping: CubeReflectionMapping,
        CubeRefractionMapping: CubeRefractionMapping,
        CubeTexture: CubeTexture,
        CubeTextureLoader: CubeTextureLoader,
        CubeUVReflectionMapping: CubeUVReflectionMapping,
        CubicBezierCurve: CubicBezierCurve,
        CubicBezierCurve3: CubicBezierCurve3,
        CubicInterpolant: CubicInterpolant,
        CullFaceBack: CullFaceBack,
        CullFaceFront: CullFaceFront,
        CullFaceFrontBack: CullFaceFrontBack,
        CullFaceNone: CullFaceNone,
        Curve: Curve,
        CurvePath: CurvePath,
        CustomBlending: CustomBlending,
        CustomToneMapping: CustomToneMapping,
        CylinderBufferGeometry: CylinderBufferGeometry,
        CylinderGeometry: CylinderGeometry,
        Cylindrical: Cylindrical,
        Data3DTexture: Data3DTexture,
        DataArrayTexture: DataArrayTexture,
        DataTexture: DataTexture,
        DataTexture2DArray: DataTexture2DArray,
        DataTexture3D: DataTexture3D,
        DataTextureLoader: DataTextureLoader,
        DataUtils: DataUtils,
        DecrementStencilOp: DecrementStencilOp,
        DecrementWrapStencilOp: DecrementWrapStencilOp,
        DefaultLoadingManager: DefaultLoadingManager,
        DepthFormat: DepthFormat,
        DepthStencilFormat: DepthStencilFormat,
        DepthTexture: DepthTexture,
        DirectionalLight: DirectionalLight,
        DirectionalLightHelper: DirectionalLightHelper,
        DiscreteInterpolant: DiscreteInterpolant,
        DodecahedronBufferGeometry: DodecahedronBufferGeometry,
        DodecahedronGeometry: DodecahedronGeometry,
        DoubleSide: DoubleSide,
        DstAlphaFactor: DstAlphaFactor,
        DstColorFactor: DstColorFactor,
        DynamicCopyUsage: DynamicCopyUsage,
        DynamicDrawUsage: DynamicDrawUsage,
        DynamicReadUsage: DynamicReadUsage,
        EdgesGeometry: EdgesGeometry,
        EllipseCurve: EllipseCurve,
        EqualDepth: EqualDepth,
        EqualStencilFunc: EqualStencilFunc,
        EquirectangularReflectionMapping: EquirectangularReflectionMapping,
        EquirectangularRefractionMapping: EquirectangularRefractionMapping,
        Euler: Euler,
        EventDispatcher: EventDispatcher,
        ExtrudeBufferGeometry: ExtrudeBufferGeometry,
        ExtrudeGeometry: ExtrudeGeometry,
        FileLoader: FileLoader,
        Float16BufferAttribute: Float16BufferAttribute,
        Float32BufferAttribute: Float32BufferAttribute,
        Float64BufferAttribute: Float64BufferAttribute,
        FloatType: FloatType,
        Fog: Fog,
        FogExp2: FogExp2,
        FramebufferTexture: FramebufferTexture,
        FrontSide: FrontSide,
        Frustum: Frustum,
        GLBufferAttribute: GLBufferAttribute,
        GLSL1: GLSL1,
        GLSL3: GLSL3,
        GreaterDepth: GreaterDepth,
        GreaterEqualDepth: GreaterEqualDepth,
        GreaterEqualStencilFunc: GreaterEqualStencilFunc,
        GreaterStencilFunc: GreaterStencilFunc,
        GridHelper: GridHelper,
        Group: Group,
        HalfFloatType: HalfFloatType,
        HemisphereLight: HemisphereLight,
        HemisphereLightHelper: HemisphereLightHelper,
        HemisphereLightProbe: HemisphereLightProbe,
        IcosahedronBufferGeometry: IcosahedronBufferGeometry,
        IcosahedronGeometry: IcosahedronGeometry,
        ImageBitmapLoader: ImageBitmapLoader,
        ImageLoader: ImageLoader,
        ImageUtils: ImageUtils,
        ImmediateRenderObject: ImmediateRenderObject,
        IncrementStencilOp: IncrementStencilOp,
        IncrementWrapStencilOp: IncrementWrapStencilOp,
        InstancedBufferAttribute: InstancedBufferAttribute,
        InstancedBufferGeometry: InstancedBufferGeometry,
        InstancedInterleavedBuffer: InstancedInterleavedBuffer,
        InstancedMesh: InstancedMesh,
        Int16BufferAttribute: Int16BufferAttribute,
        Int32BufferAttribute: Int32BufferAttribute,
        Int8BufferAttribute: Int8BufferAttribute,
        IntType: IntType,
        InterleavedBuffer: InterleavedBuffer,
        InterleavedBufferAttribute: InterleavedBufferAttribute,
        Interpolant: Interpolant,
        InterpolateDiscrete: InterpolateDiscrete,
        InterpolateLinear: InterpolateLinear,
        InterpolateSmooth: InterpolateSmooth,
        InvertStencilOp: InvertStencilOp,
        KeepStencilOp: KeepStencilOp,
        KeyframeTrack: KeyframeTrack,
        LOD: LOD,
        LatheBufferGeometry: LatheBufferGeometry,
        LatheGeometry: LatheGeometry,
        Layers: Layers,
        LessDepth: LessDepth,
        LessEqualDepth: LessEqualDepth,
        LessEqualStencilFunc: LessEqualStencilFunc,
        LessStencilFunc: LessStencilFunc,
        Light: Light,
        LightProbe: LightProbe,
        Line: Line,
        Line3: Line3,
        LineBasicMaterial: LineBasicMaterial,
        LineCurve: LineCurve,
        LineCurve3: LineCurve3,
        LineDashedMaterial: LineDashedMaterial,
        LineLoop: LineLoop,
        LineSegments: LineSegments,
        LinearEncoding: LinearEncoding,
        LinearFilter: LinearFilter,
        LinearInterpolant: LinearInterpolant,
        LinearMipMapLinearFilter: LinearMipMapLinearFilter,
        LinearMipMapNearestFilter: LinearMipMapNearestFilter,
        LinearMipmapLinearFilter: LinearMipmapLinearFilter,
        LinearMipmapNearestFilter: LinearMipmapNearestFilter,
        LinearSRGBColorSpace: LinearSRGBColorSpace,
        LinearToneMapping: LinearToneMapping,
        Loader: Loader,
        LoaderUtils: LoaderUtils,
        LoadingManager: LoadingManager,
        LoopOnce: LoopOnce,
        LoopPingPong: LoopPingPong,
        LoopRepeat: LoopRepeat,
        LuminanceAlphaFormat: LuminanceAlphaFormat,
        LuminanceFormat: LuminanceFormat,
        MOUSE: MOUSE,
        Material: Material,
        MaterialLoader: MaterialLoader,
        MathUtils: MathUtils,
        Matrix3: Matrix3,
        Matrix4: Matrix4,
        MaxEquation: MaxEquation,
        Mesh: Mesh,
        MeshBasicMaterial: MeshBasicMaterial,
        MeshDepthMaterial: MeshDepthMaterial,
        MeshDistanceMaterial: MeshDistanceMaterial,
        MeshLambertMaterial: MeshLambertMaterial,
        MeshMatcapMaterial: MeshMatcapMaterial,
        MeshNormalMaterial: MeshNormalMaterial,
        MeshPhongMaterial: MeshPhongMaterial,
        MeshPhysicalMaterial: MeshPhysicalMaterial,
        MeshStandardMaterial: MeshStandardMaterial,
        MeshToonMaterial: MeshToonMaterial,
        MinEquation: MinEquation,
        MirroredRepeatWrapping: MirroredRepeatWrapping,
        MixOperation: MixOperation,
        MultiplyBlending: MultiplyBlending,
        MultiplyOperation: MultiplyOperation,
        NearestFilter: NearestFilter,
        NearestMipMapLinearFilter: NearestMipMapLinearFilter,
        NearestMipMapNearestFilter: NearestMipMapNearestFilter,
        NearestMipmapLinearFilter: NearestMipmapLinearFilter,
        NearestMipmapNearestFilter: NearestMipmapNearestFilter,
        NeverDepth: NeverDepth,
        NeverStencilFunc: NeverStencilFunc,
        NoBlending: NoBlending,
        NoColorSpace: NoColorSpace,
        NoToneMapping: NoToneMapping,
        NormalAnimationBlendMode: NormalAnimationBlendMode,
        NormalBlending: NormalBlending,
        NotEqualDepth: NotEqualDepth,
        NotEqualStencilFunc: NotEqualStencilFunc,
        NumberKeyframeTrack: NumberKeyframeTrack,
        Object3D: Object3D,
        ObjectLoader: ObjectLoader,
        ObjectSpaceNormalMap: ObjectSpaceNormalMap,
        OctahedronBufferGeometry: OctahedronBufferGeometry,
        OctahedronGeometry: OctahedronGeometry,
        OneFactor: OneFactor,
        OneMinusDstAlphaFactor: OneMinusDstAlphaFactor,
        OneMinusDstColorFactor: OneMinusDstColorFactor,
        OneMinusSrcAlphaFactor: OneMinusSrcAlphaFactor,
        OneMinusSrcColorFactor: OneMinusSrcColorFactor,
        OrthographicCamera: OrthographicCamera,
        PCFShadowMap: PCFShadowMap,
        PCFSoftShadowMap: PCFSoftShadowMap,
        PMREMGenerator: PMREMGenerator,
        Path: Path,
        PerspectiveCamera: PerspectiveCamera,
        Plane: Plane,
        PlaneBufferGeometry: PlaneBufferGeometry,
        PlaneGeometry: PlaneGeometry,
        PlaneHelper: PlaneHelper,
        PointLight: PointLight,
        PointLightHelper: PointLightHelper,
        Points: Points,
        PointsMaterial: PointsMaterial,
        PolarGridHelper: PolarGridHelper,
        PolyhedronBufferGeometry: PolyhedronBufferGeometry,
        PolyhedronGeometry: PolyhedronGeometry,
        PositionalAudio: PositionalAudio,
        PropertyBinding: PropertyBinding,
        PropertyMixer: PropertyMixer,
        QuadraticBezierCurve: QuadraticBezierCurve,
        QuadraticBezierCurve3: QuadraticBezierCurve3,
        Quaternion: Quaternion,
        QuaternionKeyframeTrack: QuaternionKeyframeTrack,
        QuaternionLinearInterpolant: QuaternionLinearInterpolant,
        REVISION: REVISION,
        RGBADepthPacking: RGBADepthPacking,
        RGBAFormat: RGBAFormat,
        RGBAIntegerFormat: RGBAIntegerFormat,
        RGBA_ASTC_10x10_Format: RGBA_ASTC_10x10_Format,
        RGBA_ASTC_10x5_Format: RGBA_ASTC_10x5_Format,
        RGBA_ASTC_10x6_Format: RGBA_ASTC_10x6_Format,
        RGBA_ASTC_10x8_Format: RGBA_ASTC_10x8_Format,
        RGBA_ASTC_12x10_Format: RGBA_ASTC_12x10_Format,
        RGBA_ASTC_12x12_Format: RGBA_ASTC_12x12_Format,
        RGBA_ASTC_4x4_Format: RGBA_ASTC_4x4_Format,
        RGBA_ASTC_5x4_Format: RGBA_ASTC_5x4_Format,
        RGBA_ASTC_5x5_Format: RGBA_ASTC_5x5_Format,
        RGBA_ASTC_6x5_Format: RGBA_ASTC_6x5_Format,
        RGBA_ASTC_6x6_Format: RGBA_ASTC_6x6_Format,
        RGBA_ASTC_8x5_Format: RGBA_ASTC_8x5_Format,
        RGBA_ASTC_8x6_Format: RGBA_ASTC_8x6_Format,
        RGBA_ASTC_8x8_Format: RGBA_ASTC_8x8_Format,
        RGBA_BPTC_Format: RGBA_BPTC_Format,
        RGBA_ETC2_EAC_Format: RGBA_ETC2_EAC_Format,
        RGBA_PVRTC_2BPPV1_Format: RGBA_PVRTC_2BPPV1_Format,
        RGBA_PVRTC_4BPPV1_Format: RGBA_PVRTC_4BPPV1_Format,
        RGBA_S3TC_DXT1_Format: RGBA_S3TC_DXT1_Format,
        RGBA_S3TC_DXT3_Format: RGBA_S3TC_DXT3_Format,
        RGBA_S3TC_DXT5_Format: RGBA_S3TC_DXT5_Format,
        RGBFormat: RGBFormat,
        RGB_ETC1_Format: RGB_ETC1_Format,
        RGB_ETC2_Format: RGB_ETC2_Format,
        RGB_PVRTC_2BPPV1_Format: RGB_PVRTC_2BPPV1_Format,
        RGB_PVRTC_4BPPV1_Format: RGB_PVRTC_4BPPV1_Format,
        RGB_S3TC_DXT1_Format: RGB_S3TC_DXT1_Format,
        RGFormat: RGFormat,
        RGIntegerFormat: RGIntegerFormat,
        RawShaderMaterial: RawShaderMaterial,
        Ray: Ray,
        Raycaster: Raycaster,
        RectAreaLight: RectAreaLight,
        RedFormat: RedFormat,
        RedIntegerFormat: RedIntegerFormat,
        ReinhardToneMapping: ReinhardToneMapping,
        RepeatWrapping: RepeatWrapping,
        ReplaceStencilOp: ReplaceStencilOp,
        ReverseSubtractEquation: ReverseSubtractEquation,
        RingBufferGeometry: RingBufferGeometry,
        RingGeometry: RingGeometry,
        SRGBColorSpace: SRGBColorSpace,
        Scene: Scene,
        ShaderChunk: ShaderChunk,
        ShaderLib: ShaderLib,
        ShaderMaterial: ShaderMaterial,
        ShadowMaterial: ShadowMaterial,
        Shape: Shape,
        ShapeBufferGeometry: ShapeBufferGeometry,
        ShapeGeometry: ShapeGeometry,
        ShapePath: ShapePath,
        ShapeUtils: ShapeUtils,
        ShortType: ShortType,
        Skeleton: Skeleton,
        SkeletonHelper: SkeletonHelper,
        SkinnedMesh: SkinnedMesh,
        Source: Source,
        Sphere: Sphere,
        SphereBufferGeometry: SphereBufferGeometry,
        SphereGeometry: SphereGeometry,
        Spherical: Spherical,
        SphericalHarmonics3: SphericalHarmonics3,
        SplineCurve: SplineCurve,
        SpotLight: SpotLight,
        SpotLightHelper: SpotLightHelper,
        Sprite: Sprite,
        SpriteMaterial: SpriteMaterial,
        SrcAlphaFactor: SrcAlphaFactor,
        SrcAlphaSaturateFactor: SrcAlphaSaturateFactor,
        SrcColorFactor: SrcColorFactor,
        StaticCopyUsage: StaticCopyUsage,
        StaticDrawUsage: StaticDrawUsage,
        StaticReadUsage: StaticReadUsage,
        StereoCamera: StereoCamera,
        StreamCopyUsage: StreamCopyUsage,
        StreamDrawUsage: StreamDrawUsage,
        StreamReadUsage: StreamReadUsage,
        StringKeyframeTrack: StringKeyframeTrack,
        SubtractEquation: SubtractEquation,
        SubtractiveBlending: SubtractiveBlending,
        TOUCH: TOUCH,
        TangentSpaceNormalMap: TangentSpaceNormalMap,
        TetrahedronBufferGeometry: TetrahedronBufferGeometry,
        TetrahedronGeometry: TetrahedronGeometry,
        Texture: Texture,
        TextureLoader: TextureLoader,
        TorusBufferGeometry: TorusBufferGeometry,
        TorusGeometry: TorusGeometry,
        TorusKnotBufferGeometry: TorusKnotBufferGeometry,
        TorusKnotGeometry: TorusKnotGeometry,
        Triangle: Triangle,
        TriangleFanDrawMode: TriangleFanDrawMode,
        TriangleStripDrawMode: TriangleStripDrawMode,
        TrianglesDrawMode: TrianglesDrawMode,
        TubeBufferGeometry: TubeBufferGeometry,
        TubeGeometry: TubeGeometry,
        UVMapping: UVMapping,
        Uint16BufferAttribute: Uint16BufferAttribute,
        Uint32BufferAttribute: Uint32BufferAttribute,
        Uint8BufferAttribute: Uint8BufferAttribute,
        Uint8ClampedBufferAttribute: Uint8ClampedBufferAttribute,
        Uniform: Uniform,
        UniformsGroup: UniformsGroup,
        UniformsLib: UniformsLib,
        UniformsUtils: UniformsUtils,
        UnsignedByteType: UnsignedByteType,
        UnsignedInt248Type: UnsignedInt248Type,
        UnsignedIntType: UnsignedIntType,
        UnsignedShort4444Type: UnsignedShort4444Type,
        UnsignedShort5551Type: UnsignedShort5551Type,
        UnsignedShortType: UnsignedShortType,
        VSMShadowMap: VSMShadowMap,
        Vector2: Vector2,
        Vector3: Vector3,
        Vector4: Vector4,
        VectorKeyframeTrack: VectorKeyframeTrack,
        VideoTexture: VideoTexture,
        WebGL1Renderer: WebGL1Renderer,
        WebGL3DRenderTarget: WebGL3DRenderTarget,
        WebGLArrayRenderTarget: WebGLArrayRenderTarget,
        WebGLCubeRenderTarget: WebGLCubeRenderTarget,
        WebGLMultipleRenderTargets: WebGLMultipleRenderTargets,
        WebGLMultisampleRenderTarget: WebGLMultisampleRenderTarget,
        WebGLRenderTarget: WebGLRenderTarget,
        WebGLRenderer: WebGLRenderer,
        WebGLUtils: WebGLUtils,
        WireframeGeometry: WireframeGeometry,
        WrapAroundEnding: WrapAroundEnding,
        ZeroCurvatureEnding: ZeroCurvatureEnding,
        ZeroFactor: ZeroFactor,
        ZeroSlopeEnding: ZeroSlopeEnding,
        ZeroStencilOp: ZeroStencilOp,
        _SRGBAFormat: _SRGBAFormat,
        sRGBEncoding: sRGBEncoding
    });

    /* src\MovingDotSpaceModalBrainstorm.svelte generated by Svelte v3.59.2 */
    const file$i = "src\\MovingDotSpaceModalBrainstorm.svelte";

    function create_fragment$i(ctx) {
    	let div;

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			attr_dev(div, "class", "svelte-1kuj9kb");
    			add_location(div, file$i, 95, 0, 3254);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			/*div_binding*/ ctx[1](div);
    		},
    		p: noop$2,
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			/*div_binding*/ ctx[1](null);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$i.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$i($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('MovingDotSpaceModalBrainstorm', slots, []);
    	let container;
    	let scene, camera, renderer, geometry, material, mesh;

    	onMount(() => {
    		init();
    		animate();
    	});

    	function init() {
    		// Create scene
    		scene = new Scene();

    		// Create camera
    		camera = new PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);

    		camera.position.z = 5;

    		// Create renderer
    		renderer = new WebGLRenderer({ antialias: true });

    		renderer.setSize(window.innerWidth, window.innerHeight);
    		container.appendChild(renderer.domElement);

    		// Create geometry
    		geometry = new TorusKnotGeometry(1, 0.3, 100, 20);

    		// Create material
    		material = new MeshBasicMaterial({ color: 0x00ff00, wireframe: true });

    		// Create mesh
    		mesh = new Mesh(geometry, material);

    		scene.add(mesh);
    	}

    	function animate() {
    		requestAnimationFrame(animate);
    		mesh.rotation.x += 0.01;
    		mesh.rotation.y += 0.02;
    		renderer.render(scene, camera);
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<MovingDotSpaceModalBrainstorm> was created with unknown prop '${key}'`);
    	});

    	function div_binding($$value) {
    		binding_callbacks[$$value ? 'unshift' : 'push'](() => {
    			container = $$value;
    			$$invalidate(0, container);
    		});
    	}

    	$$self.$capture_state = () => ({
    		onMount,
    		THREE,
    		container,
    		scene,
    		camera,
    		renderer,
    		geometry,
    		material,
    		mesh,
    		init,
    		animate
    	});

    	$$self.$inject_state = $$props => {
    		if ('container' in $$props) $$invalidate(0, container = $$props.container);
    		if ('scene' in $$props) scene = $$props.scene;
    		if ('camera' in $$props) camera = $$props.camera;
    		if ('renderer' in $$props) renderer = $$props.renderer;
    		if ('geometry' in $$props) geometry = $$props.geometry;
    		if ('material' in $$props) material = $$props.material;
    		if ('mesh' in $$props) mesh = $$props.mesh;
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [container, div_binding];
    }

    class MovingDotSpaceModalBrainstorm extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$i, create_fragment$i, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "MovingDotSpaceModalBrainstorm",
    			options,
    			id: create_fragment$i.name
    		});
    	}
    }

    /* src\MovingDotSpaceGameFind.svelte generated by Svelte v3.59.2 */

    const file$h = "src\\MovingDotSpaceGameFind.svelte";

    function get_each_context$e(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[9] = list[i];
    	child_ctx[11] = i;
    	return child_ctx;
    }

    function get_each_context_1$8(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[12] = list[i];
    	child_ctx[14] = i;
    	return child_ctx;
    }

    // (63:4) {:else}
    function create_else_block$2(ctx) {
    	let p;

    	const block = {
    		c: function create() {
    			p = element$1("p");
    			p.textContent = "Game over. Try again!";
    			add_location(p, file$h, 63, 6, 1832);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, p, anchor);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(p);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_else_block$2.name,
    		type: "else",
    		source: "(63:4) {:else}",
    		ctx
    	});

    	return block;
    }

    // (61:34) 
    function create_if_block_1$5(ctx) {
    	let p;

    	const block = {
    		c: function create() {
    			p = element$1("p");
    			p.textContent = "You won! 🎉";
    			add_location(p, file$h, 61, 6, 1793);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, p, anchor);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(p);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_1$5.name,
    		type: "if",
    		source: "(61:34) ",
    		ctx
    	});

    	return block;
    }

    // (59:4) {#if gameState === 'playing'}
    function create_if_block$9(ctx) {
    	let p;
    	let t0;
    	let t1;

    	const block = {
    		c: function create() {
    			p = element$1("p");
    			t0 = text("Presses Remaining: ");
    			t1 = text(/*pressesRemaining*/ ctx[0]);
    			add_location(p, file$h, 59, 6, 1705);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, p, anchor);
    			append_dev(p, t0);
    			append_dev(p, t1);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*pressesRemaining*/ 1) set_data_dev(t1, /*pressesRemaining*/ ctx[0]);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(p);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$9.name,
    		type: "if",
    		source: "(59:4) {#if gameState === 'playing'}",
    		ctx
    	});

    	return block;
    }

    // (71:6) {#each row as cell, colIndex}
    function create_each_block_1$8(ctx) {
    	let button;

    	let t0_value = (/*cell*/ ctx[12].pressed
    	? /*rowIndex*/ ctx[11] === /*correctItem*/ ctx[1].row && /*colIndex*/ ctx[14] === /*correctItem*/ ctx[1].col
    		? '✅'
    		: '❌'
    	: '') + "";

    	let t0;
    	let t1;
    	let button_disabled_value;
    	let mounted;
    	let dispose;

    	function click_handler() {
    		return /*click_handler*/ ctx[6](/*rowIndex*/ ctx[11], /*colIndex*/ ctx[14]);
    	}

    	const block = {
    		c: function create() {
    			button = element$1("button");
    			t0 = text(t0_value);
    			t1 = space();
    			button.disabled = button_disabled_value = /*gameState*/ ctx[2] !== 'playing';
    			attr_dev(button, "class", "svelte-p3ubim");
    			toggle_class(button, "pressed", /*cell*/ ctx[12].pressed);
    			add_location(button, file$h, 71, 8, 2045);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button, anchor);
    			append_dev(button, t0);
    			append_dev(button, t1);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", click_handler, false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;

    			if (dirty & /*grid, correctItem*/ 10 && t0_value !== (t0_value = (/*cell*/ ctx[12].pressed
    			? /*rowIndex*/ ctx[11] === /*correctItem*/ ctx[1].row && /*colIndex*/ ctx[14] === /*correctItem*/ ctx[1].col
    				? '✅'
    				: '❌'
    			: '') + "")) set_data_dev(t0, t0_value);

    			if (dirty & /*gameState*/ 4 && button_disabled_value !== (button_disabled_value = /*gameState*/ ctx[2] !== 'playing')) {
    				prop_dev(button, "disabled", button_disabled_value);
    			}

    			if (dirty & /*grid*/ 8) {
    				toggle_class(button, "pressed", /*cell*/ ctx[12].pressed);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$8.name,
    		type: "each",
    		source: "(71:6) {#each row as cell, colIndex}",
    		ctx
    	});

    	return block;
    }

    // (70:4) {#each grid as row, rowIndex}
    function create_each_block$e(ctx) {
    	let each_1_anchor;
    	let each_value_1 = /*row*/ ctx[9];
    	validate_each_argument(each_value_1);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks[i] = create_each_block_1$8(get_each_context_1$8(ctx, each_value_1, i));
    	}

    	const block = {
    		c: function create() {
    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			each_1_anchor = empty();
    		},
    		m: function mount(target, anchor) {
    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(target, anchor);
    				}
    			}

    			insert_dev(target, each_1_anchor, anchor);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*gameState, grid, pressButton, correctItem*/ 30) {
    				each_value_1 = /*row*/ ctx[9];
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$8(ctx, each_value_1, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_1$8(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(each_1_anchor.parentNode, each_1_anchor);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_1.length;
    			}
    		},
    		d: function destroy(detaching) {
    			destroy_each(each_blocks, detaching);
    			if (detaching) detach_dev(each_1_anchor);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$e.name,
    		type: "each",
    		source: "(70:4) {#each grid as row, rowIndex}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$h(ctx) {
    	let div0;
    	let t0;
    	let button;
    	let t2;
    	let div1;
    	let mounted;
    	let dispose;

    	function select_block_type(ctx, dirty) {
    		if (/*gameState*/ ctx[2] === 'playing') return create_if_block$9;
    		if (/*gameState*/ ctx[2] === 'won') return create_if_block_1$5;
    		return create_else_block$2;
    	}

    	let current_block_type = select_block_type(ctx);
    	let if_block = current_block_type(ctx);
    	let each_value = /*grid*/ ctx[3];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$e(get_each_context$e(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			div0 = element$1("div");
    			if_block.c();
    			t0 = space();
    			button = element$1("button");
    			button.textContent = "Restart Game";
    			t2 = space();
    			div1 = element$1("div");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			attr_dev(button, "class", "svelte-p3ubim");
    			add_location(button, file$h, 65, 4, 1877);
    			add_location(div0, file$h, 57, 2, 1657);
    			attr_dev(div1, "class", "grid svelte-p3ubim");
    			add_location(div1, file$h, 68, 2, 1945);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div0, anchor);
    			if_block.m(div0, null);
    			append_dev(div0, t0);
    			append_dev(div0, button);
    			insert_dev(target, t2, anchor);
    			insert_dev(target, div1, anchor);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div1, null);
    				}
    			}

    			if (!mounted) {
    				dispose = listen_dev(button, "click", /*resetGame*/ ctx[5], false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (current_block_type === (current_block_type = select_block_type(ctx)) && if_block) {
    				if_block.p(ctx, dirty);
    			} else {
    				if_block.d(1);
    				if_block = current_block_type(ctx);

    				if (if_block) {
    					if_block.c();
    					if_block.m(div0, t0);
    				}
    			}

    			if (dirty & /*grid, gameState, pressButton, correctItem*/ 30) {
    				each_value = /*grid*/ ctx[3];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$e(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$e(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(div1, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div0);
    			if_block.d();
    			if (detaching) detach_dev(t2);
    			if (detaching) detach_dev(div1);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$h.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$h($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('MovingDotSpaceGameFind', slots, []);
    	let gridSize = 10;
    	let maxPresses = 20; // Maximum number of presses allowed
    	let pressesRemaining = maxPresses;

    	let correctItem = {
    		row: Math.floor(Math.random() * gridSize),
    		col: Math.floor(Math.random() * gridSize)
    	};

    	let gameState = "playing"; // Can be "playing", "won", or "lost"

    	// Generate initial grid state
    	let grid = Array(gridSize).fill().map(() => Array(gridSize).fill().map(() => ({ pressed: false })));

    	function pressButton(row, col) {
    		if (grid[row][col].pressed || pressesRemaining === 0 || gameState !== "playing") {
    			return; // Ignore if already pressed or no presses left or game not in playing state
    		}

    		$$invalidate(3, grid[row][col].pressed = true, grid);
    		$$invalidate(0, pressesRemaining -= 1);

    		// Check for win condition
    		if (row === correctItem.row && col === correctItem.col) {
    			$$invalidate(2, gameState = "won");
    		} else if (pressesRemaining === 0) {
    			$$invalidate(2, gameState = "lost");
    		}
    	}

    	function resetGame() {
    		$$invalidate(0, pressesRemaining = maxPresses);

    		$$invalidate(1, correctItem = {
    			row: Math.floor(Math.random() * gridSize),
    			col: Math.floor(Math.random() * gridSize)
    		});

    		$$invalidate(3, grid = Array(gridSize).fill().map(() => Array(gridSize).fill().map(() => ({ pressed: false }))));
    		$$invalidate(2, gameState = "playing");
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<MovingDotSpaceGameFind> was created with unknown prop '${key}'`);
    	});

    	const click_handler = (rowIndex, colIndex) => pressButton(rowIndex, colIndex);

    	$$self.$capture_state = () => ({
    		gridSize,
    		maxPresses,
    		pressesRemaining,
    		correctItem,
    		gameState,
    		grid,
    		pressButton,
    		resetGame
    	});

    	$$self.$inject_state = $$props => {
    		if ('gridSize' in $$props) gridSize = $$props.gridSize;
    		if ('maxPresses' in $$props) maxPresses = $$props.maxPresses;
    		if ('pressesRemaining' in $$props) $$invalidate(0, pressesRemaining = $$props.pressesRemaining);
    		if ('correctItem' in $$props) $$invalidate(1, correctItem = $$props.correctItem);
    		if ('gameState' in $$props) $$invalidate(2, gameState = $$props.gameState);
    		if ('grid' in $$props) $$invalidate(3, grid = $$props.grid);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		pressesRemaining,
    		correctItem,
    		gameState,
    		grid,
    		pressButton,
    		resetGame,
    		click_handler
    	];
    }

    class MovingDotSpaceGameFind extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$h, create_fragment$h, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "MovingDotSpaceGameFind",
    			options,
    			id: create_fragment$h.name
    		});
    	}
    }

    /* src\MovingDotSpaceGameOrder.svelte generated by Svelte v3.59.2 */

    const file$g = "src\\MovingDotSpaceGameOrder.svelte";

    function get_each_context$d(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[10] = list[i];
    	child_ctx[12] = i;
    	return child_ctx;
    }

    // (72:39) 
    function create_if_block_2$2(ctx) {
    	let p;

    	const block = {
    		c: function create() {
    			p = element$1("p");
    			p.textContent = "Incorrect order. Try again!";
    			add_location(p, file$g, 72, 4, 2206);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, p, anchor);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(p);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_2$2.name,
    		type: "if",
    		source: "(72:39) ",
    		ctx
    	});

    	return block;
    }

    // (70:2) {#if gameStatus === "correct"}
    function create_if_block_1$4(ctx) {
    	let p;

    	const block = {
    		c: function create() {
    			p = element$1("p");
    			p.textContent = "You guessed the correct order! 🎉";
    			add_location(p, file$g, 70, 4, 2119);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, p, anchor);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(p);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_1$4.name,
    		type: "if",
    		source: "(70:2) {#if gameStatus === \\\"correct\\\"}",
    		ctx
    	});

    	return block;
    }

    // (79:4) {#each Array(gridSize) as _, i}
    function create_each_block$d(ctx) {
    	let button;
    	let t0_value = /*i*/ ctx[12] + 1 + "";
    	let t0;
    	let t1;
    	let mounted;
    	let dispose;

    	function click_handler() {
    		return /*click_handler*/ ctx[8](/*i*/ ctx[12]);
    	}

    	const block = {
    		c: function create() {
    			button = element$1("button");
    			t0 = text(t0_value);
    			t1 = space();
    			attr_dev(button, "data-number", /*i*/ ctx[12] + 1);
    			attr_dev(button, "class", "svelte-7k1yf9");
    			toggle_class(button, "pressed", /*userOrder*/ ctx[0].includes(/*i*/ ctx[12] + 1));
    			add_location(button, file$g, 79, 6, 2378);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button, anchor);
    			append_dev(button, t0);
    			append_dev(button, t1);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", click_handler, false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;

    			if (dirty & /*userOrder*/ 1) {
    				toggle_class(button, "pressed", /*userOrder*/ ctx[0].includes(/*i*/ ctx[12] + 1));
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$d.name,
    		type: "each",
    		source: "(79:4) {#each Array(gridSize) as _, i}",
    		ctx
    	});

    	return block;
    }

    // (86:2) {#if !checkOnEveryPress && gameStatus === ""}
    function create_if_block$8(ctx) {
    	let button;
    	let t;
    	let button_disabled_value;
    	let mounted;
    	let dispose;

    	const block = {
    		c: function create() {
    			button = element$1("button");
    			t = text("Check Order");
    			button.disabled = button_disabled_value = /*userOrder*/ ctx[0].length !== /*gridSize*/ ctx[3];
    			attr_dev(button, "class", "svelte-7k1yf9");
    			add_location(button, file$g, 86, 4, 2600);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button, anchor);
    			append_dev(button, t);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", /*checkOrder*/ ctx[5], false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*userOrder*/ 1 && button_disabled_value !== (button_disabled_value = /*userOrder*/ ctx[0].length !== /*gridSize*/ ctx[3])) {
    				prop_dev(button, "disabled", button_disabled_value);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$8.name,
    		type: "if",
    		source: "(86:2) {#if !checkOnEveryPress && gameStatus === \\\"\\\"}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$g(ctx) {
    	let div0;
    	let input;
    	let t0;
    	let label;
    	let t2;
    	let t3;
    	let button;
    	let t5;
    	let div1;
    	let t6;
    	let if_block1_anchor;
    	let mounted;
    	let dispose;

    	function select_block_type(ctx, dirty) {
    		if (/*gameStatus*/ ctx[2] === "correct") return create_if_block_1$4;
    		if (/*gameStatus*/ ctx[2] === "incorrect") return create_if_block_2$2;
    	}

    	let current_block_type = select_block_type(ctx);
    	let if_block0 = current_block_type && current_block_type(ctx);
    	let each_value = Array(/*gridSize*/ ctx[3]);
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$d(get_each_context$d(ctx, each_value, i));
    	}

    	let if_block1 = !/*checkOnEveryPress*/ ctx[1] && /*gameStatus*/ ctx[2] === "" && create_if_block$8(ctx);

    	const block = {
    		c: function create() {
    			div0 = element$1("div");
    			input = element$1("input");
    			t0 = space();
    			label = element$1("label");
    			label.textContent = "Check order on every press";
    			t2 = space();
    			if (if_block0) if_block0.c();
    			t3 = space();
    			button = element$1("button");
    			button.textContent = "Restart Game";
    			t5 = space();
    			div1 = element$1("div");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t6 = space();
    			if (if_block1) if_block1.c();
    			if_block1_anchor = empty();
    			attr_dev(input, "type", "checkbox");
    			add_location(input, file$g, 65, 4, 1962);
    			add_location(label, file$g, 66, 4, 2024);
    			attr_dev(div0, "class", "controls svelte-7k1yf9");
    			add_location(div0, file$g, 64, 2, 1934);
    			attr_dev(button, "class", "svelte-7k1yf9");
    			add_location(button, file$g, 75, 2, 2257);
    			attr_dev(div1, "class", "grid svelte-7k1yf9");
    			add_location(div1, file$g, 77, 2, 2315);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div0, anchor);
    			append_dev(div0, input);
    			input.checked = /*checkOnEveryPress*/ ctx[1];
    			append_dev(div0, t0);
    			append_dev(div0, label);
    			insert_dev(target, t2, anchor);
    			if (if_block0) if_block0.m(target, anchor);
    			insert_dev(target, t3, anchor);
    			insert_dev(target, button, anchor);
    			insert_dev(target, t5, anchor);
    			insert_dev(target, div1, anchor);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div1, null);
    				}
    			}

    			insert_dev(target, t6, anchor);
    			if (if_block1) if_block1.m(target, anchor);
    			insert_dev(target, if_block1_anchor, anchor);

    			if (!mounted) {
    				dispose = [
    					listen_dev(input, "change", /*input_change_handler*/ ctx[7]),
    					listen_dev(button, "click", /*resetGame*/ ctx[6], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*checkOnEveryPress*/ 2) {
    				input.checked = /*checkOnEveryPress*/ ctx[1];
    			}

    			if (current_block_type !== (current_block_type = select_block_type(ctx))) {
    				if (if_block0) if_block0.d(1);
    				if_block0 = current_block_type && current_block_type(ctx);

    				if (if_block0) {
    					if_block0.c();
    					if_block0.m(t3.parentNode, t3);
    				}
    			}

    			if (dirty & /*userOrder, handlePress*/ 17) {
    				each_value = Array(/*gridSize*/ ctx[3]);
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$d(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$d(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(div1, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}

    			if (!/*checkOnEveryPress*/ ctx[1] && /*gameStatus*/ ctx[2] === "") {
    				if (if_block1) {
    					if_block1.p(ctx, dirty);
    				} else {
    					if_block1 = create_if_block$8(ctx);
    					if_block1.c();
    					if_block1.m(if_block1_anchor.parentNode, if_block1_anchor);
    				}
    			} else if (if_block1) {
    				if_block1.d(1);
    				if_block1 = null;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div0);
    			if (detaching) detach_dev(t2);

    			if (if_block0) {
    				if_block0.d(detaching);
    			}

    			if (detaching) detach_dev(t3);
    			if (detaching) detach_dev(button);
    			if (detaching) detach_dev(t5);
    			if (detaching) detach_dev(div1);
    			destroy_each(each_blocks, detaching);
    			if (detaching) detach_dev(t6);
    			if (if_block1) if_block1.d(detaching);
    			if (detaching) detach_dev(if_block1_anchor);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$g.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$g($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('MovingDotSpaceGameOrder', slots, []);
    	let gridSize = 4; // Grid size for simplicity
    	let correctOrder = Array.from({ length: gridSize }, (_, i) => i + 1).sort(() => 0.5 - Math.random()); // Randomized correct order
    	let userOrder = []; // User's order
    	let checkOnEveryPress = false; // Start with manual check
    	let gameStatus = ""; // "", "correct", or "incorrect"

    	function handlePress(number) {
    		if (userOrder.includes(number) || gameStatus) return; // Ignore if already pressed or game has ended
    		userOrder.push(number);

    		if (!checkOnEveryPress) {
    			// Add the "pressed" class to the pressed button
    			const pressedButton = document.querySelector(`button[data-number="${number}"]`);

    			pressedButton.classList.add("pressed");
    		} else {
    			checkOrder();
    		}
    	}

    	function checkOrder() {
    		for (let i = 0; i < userOrder.length; i++) {
    			if (userOrder[i] !== correctOrder[i]) {
    				$$invalidate(2, gameStatus = "incorrect");
    				return;
    			}
    		}

    		if (userOrder.length === correctOrder.length) {
    			$$invalidate(2, gameStatus = "correct");
    		}
    	}

    	function resetGame() {
    		$$invalidate(0, userOrder = []);
    		$$invalidate(2, gameStatus = "");
    		correctOrder.sort(() => 0.5 - Math.random()); // Shuffle for a new game

    		// Remove the "pressed" class from all buttons
    		const pressedButtons = document.querySelectorAll(".pressed");

    		pressedButtons.forEach(button => button.classList.remove("pressed"));
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<MovingDotSpaceGameOrder> was created with unknown prop '${key}'`);
    	});

    	function input_change_handler() {
    		checkOnEveryPress = this.checked;
    		$$invalidate(1, checkOnEveryPress);
    	}

    	const click_handler = i => handlePress(i + 1);

    	$$self.$capture_state = () => ({
    		gridSize,
    		correctOrder,
    		userOrder,
    		checkOnEveryPress,
    		gameStatus,
    		handlePress,
    		checkOrder,
    		resetGame
    	});

    	$$self.$inject_state = $$props => {
    		if ('gridSize' in $$props) $$invalidate(3, gridSize = $$props.gridSize);
    		if ('correctOrder' in $$props) correctOrder = $$props.correctOrder;
    		if ('userOrder' in $$props) $$invalidate(0, userOrder = $$props.userOrder);
    		if ('checkOnEveryPress' in $$props) $$invalidate(1, checkOnEveryPress = $$props.checkOnEveryPress);
    		if ('gameStatus' in $$props) $$invalidate(2, gameStatus = $$props.gameStatus);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		userOrder,
    		checkOnEveryPress,
    		gameStatus,
    		gridSize,
    		handlePress,
    		checkOrder,
    		resetGame,
    		input_change_handler,
    		click_handler
    	];
    }

    class MovingDotSpaceGameOrder extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$g, create_fragment$g, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "MovingDotSpaceGameOrder",
    			options,
    			id: create_fragment$g.name
    		});
    	}
    }

    // themeConfig.js

    const themes = {
        'User Custom - Template': {
            background: '/AutoGameBackgrounds/theme_background.png',
            inventory: [
                { type: "weapon", name: "Random waepon", description: "A powerful weapon." },
                // ... more space items
            ],
            skills: [
                { branch: "Skill Group 1", name: "Skill One", learned: false },
                // ... more space skills
            ],
            persistentTargets: [
                { name: "Background Target 1", x: 500, y: 500, collisionType: "alert", collisiontext: "First Test"},
            ],
            // ... and so on for targets
            story: [
                {
                    part: 0,
                    objectives: [
                        { id: 1, 
                        name: "Mission Details", 
                        complete: false,
                        progress: 0,
                        inventoryRequired: [],  },
                    ],
                    targets:  [
                    { name: "Target 1", x: 150, y: 150, collisionType: "alert", collisiontext: "First Test"},
                    ],
                },
                {
                    part: 1,
                    objectives: [
                        { id: 2, 
                        name: "Mission Details", 
                        complete: false,
                        progress: 0,
                        inventoryRequired: [],  },
                    ],
                    targets:  [
                    { name: "Target 2", x: 250, y: 250, collisionType: "alert", collisiontext: "First Test"},
                    ],
                },
            ],
            actions: {
                Buybook() {
                    // Logic to slay the dragon
                },
            },
            stateobjects: {
                // For location based story within a part
            },
        },
        'Default': {
            background: '/AutoGameBackgrounds/1stGameLoc123.png',
            inventory: [
                { type: "book", name: "My Memories", description: "Currently I dont remember the when I start this journey...." },
                { type: "weapon", name: "Sword", description: "A sharp blade." },
                { type: "armor", name: "Shield", description: "Protects against attacks." },
                { type: "consumable", name: "Health Potion", description: "Restores health." },
                // ... more space items
            ],
            skills: [
                { branch: "Combat", name: "Basic Attack", learned: false },
                { branch: "Magic", name: "Fireball", learned: false },
                { branch: "Stealth", name: "Sneak", learned: false },
                // ... more space skills
            ],
            persistentTargets: [

            ],
            objectives: [
                { id: "Seperate", name: "Visit Mountain Peak", complete: false },
                { id: "Mission 1", name: "Intercept The Courier (Search the Locations)", complete: false },
                { id: "Mission 1", name: "Deliver the package to Market Stall", complete: false },
                // ... more space objectives
            ],
            // ... and so on for targets
            story: [
                {
                    part: 0,
                    objectives: [],
                    targets:  [
                    { name: "Target 1", x: 50, y: 50, collisionType: "alert", collisiontext: "First Test",
                        subtargets: [
                            { name: "Target 1 sub 1", x: 100, y: 75, collisionType: "alert", collisiontext: "First Test in Sub of First Test"} ,
                        ],
                    },
                    { name: "Target 2", x: 100, y: 100, collisionType: "", collisiontext: ""},
                    { name: "Target 2 - SM in this space is passing function from the config to the case function", x: 600, y: 600, collisionType: "smmodal", modalStates: {
                        default: {
                          title: "Entrance",
                          content: "You've reached the Entrance. What's your next step?",
                          items: [
                            { label: "Ask for guidance on next move", action: "guidance" },
                            { label: "Buy an Axe", action: "buyAxe" }
                          ],
                          consequences: [],
                          modalimg: '/AutoGameBackgrounds/1stGameLoc123.png',
                        },
                        guidance: {
                          title: "Entrance - Guidance",
                          content: "The path to the north leads to the forest, and the path to the south leads to the village.",
                          items: [
                            { label: "Head North", action: "forest" },
                            { label: "Return", action: "default" }
                          ],
                          consequences: [],
                        },
                        forest: {
                          title: "Forest",
                          content: "Went to the forest",
                          items: [],
                          consequences: [ 'gainleaf' ],
                        }
                    }},
                    { name: "Entrance", x: 995, y: 660, collisionType: "modal", modalConfig: {
                        title: "Entrance",
                        content: "You've reached the Entrance. What's your next step?",
                        actions: [
                            {label: "Ask for guidance on next move", action: "askforDirections"},
                            {label: "Buy an Axe", action: "buyAxeAlert"},
                            // ... more actions if necessary
                        ]},
                    },
                    { name: "Market Stall", x: 200, y: 300, collisionType: "", collisiontext: "" },   // A market stall in the bustling market area.
                    { name: "Inn Entrance", x: 400, y: 450, collisionType: "", collisiontext: "" },   // The entrance to the inn for rest or information.
                    { name: "Town Hall", x: 600, y: 350, collisionType: "", collisiontext: "" },      // The entrance to the town hall for quests.
                    { name: "Fountain", x: 500, y: 500, collisionType: "", collisiontext: "" },       // A fountain in the town square as a meeting point.
                    { name: "Bridge", x: 1100, y: 700, collisionType: "", collisiontext: "" },        // A bridge in the mystical forest area.
                    { name: "Waterfall", x: 1300, y: 800, collisionType: "", collisiontext: "" },     // A waterfall that could hide secrets or treasures.
                    { name: "Mountain Peak", x: 1500, y: 100, collisionType: "", collisiontext: "" },
                    //{ name: "Mysterious Stranger", x: 350, y: 550, collisionType: "alert", collisiontext: "Beware the hidden caves in the north." },
                    //{ name: "Hidden Cave", x: 1200, y: 400, collisionType: "changeBackgroundColor", color: "#0B3D91" },
                    //{ name: "Ancient Tree", x: 300, y: 700, collisionType: "playSound", soundUrl: "tree_whisper.mp3" },
                    //{ name: "Forgotten Monument", x: 700, y: 800, collisionType: "startAnimation", elementId: "monument", animationClass: "glow" },
                    //{ name: "Wizard's Tower", x: 950, y: 150, collisionType: "rotateDot" },
                    //{ name: "Lakeside", x: 1400, y: 600, collisionType: "changeDotColor", color: "#00BFFF" },
                    //{ name: "Dragon's Lair", x: 1600, y: 200, collisionType: "incrementScore", incrementValue: 50 },
                    //{ name: "Abandoned Shipwreck", x: 1300, y: 500, collisionType: "shrinkDot" },
                    
                    { name: "Switch Test 1", x: 700, y: 700, collisionType: "storypartchange",  collisiontext: "First Test", transitionToPart: 1},
                    ],
                },
                {
                    part: 1,
                    objectives: [],
                    targets:  [
                    { name: "Target 1", x: 50, y: 50, collisionType: "alert",  collisiontext: "First Test"},
                    { name: "Switch Back Test 1", x: 600, y: 400, collisionType: "storypartchange",  collisiontext: "First Test", transitionToPart: 0},
                    ],
                },
            ],
            actions: {
                Buybook() {
                    // Logic to buy a book
                },
                buyAxeAlert() {
                    alert('bought book');
                },
                gainleaf() {
                    const newItem = {type: "random", name: "Leaf", description: "Random Leaf blown to you by the wind"};
                    addInventoryItem(newItem); 
                },
            },
        },
        'Space Odyssey': {
            background: '/AutoGameBackgrounds/SpaceOdysseyGameLoc.png',
            inventory: [
            { type: "weapon", name: "Laser Gun", description: "A powerful laser weapon." },
            { type: "tool", name: "Repair Kit", description: "A kit for repairing various equipment." },
            { type: "tool", name: "Mining Laser", description: "A tool for extracting minerals from asteroids." },
            // ... more space items
            ],
            skills: [
            { branch: "Piloting", name: "Astro Navigation", learned: false },
            { branch: "Engineering", name: "Repair Mastery", learned: false },
            // ... more space skills
            ],
            persistentTargets: [
                { name: "Space Station", x: 200, y: 300, collisionType: "", collisiontext: "" },
                //{ name: "Asteroid Field", x: 400, y: 450, collisionType: "", collisiontext: "" },
                { name: "Alien Planet", x: 940, y: 460, collisionType: "alert", collisiontext: "You have arrived at an alien planet. The inhabitants seem cautious but willing to negotiate. Find a way to establish peace." },
                
                { name: "Abandoned Spaceship", x: 460, y: 570, collisionType: "alert", collisiontext: "You have discovered an abandoned spaceship. It appears to be of ancient origin. Explore it for clues."},
                { name: "Colony", x: 640, y: 500, collisionType: "modal", modalConfig: {
                    title: "Human Colony",
                    content: "You have reached the human colony. Rest and prepare for your upcoming missions. Keep an eye out for any suspicious activities.",
                    actions: [
                        {label: "Request Mission Briefing", action: "requestBriefing"},
                        {label: "Purchase Upgrades", action: "purchaseUpgrades"},
                    // ... more actions if necessary
                    ]},
                },
                { name: "Meteor Field", x: 1100, y: 470, collisionType: "modal", modalConfig: {
                    title: "Dangerous Meteor Field",
                    content: "You have entered a dense meteor field. Navigate carefully to avoid damage to your ship.",
                    actions: [
                        {label: "Activate Shields", action: "activateShields"},
                        {label: "Scan for Rare Minerals", action: "scanMinerals"},
                    // ... more actions if necessary
                    ]},
                },
            // ... more persistent neutral targets
            ],
            story: [
                {
                    part: 0,
                    objectives: [
                        {
                        id: 1,
                        name: "Dock at the Space Station",
                        complete: false,
                        progress: 0,
                        inventoryRequired: [],
                        },
                        {
                        id: 2,
                        name: "Repair the Communication Array",
                        complete: false,
                        progress: 0,
                        inventoryRequired: ["Repair Kit"],
                        },
                    ],
                    targets: [
                        { name: "Space Station Docking Bay", x: 500, y: 400, collisionType: "alert", collisiontext: "Welcome to the space station. Please dock your ship and proceed to the communication room for your first mission." },
                        { name: "Communication Room", x: 800, y: 200, collisionType: "alert", collisiontext: "You enter the communication room and find the array in disrepair. Collect the necessary tools and fix it to establish contact with Earth." },
                        { name: "To Asteroid Field", x: 900, y: 100, collisionType: "storypartchange", transitionToPart: 1, collisiontext: "With the communication array repaired, you receive orders to investigate the nearby asteroid field for rare minerals." },
                    ],
                },
                {
                    part: 1,
                    objectives: [
                        {
                        id: 3,
                        name: "Collect Rare Asteroid Minerals",
                        complete: false,
                        progress: 0,
                        inventoryRequired: ["Mining Laser"],
                        },
                    ],
                    targets: [
                        { name: "Asteroid Field", x: 1200, y: 300, collisionType: "alert", collisiontext: "You arrive at the asteroid field. Scan the asteroids for the rare minerals and use your mining laser to extract them." },
                        { name: "Alien Encounter", x: 1250, y: 350, collisionType: "alert", collisiontext: "During the mining operation, you encounter an alien ship. They seem suspicious of your activities. Attempt to communicate and explain your peaceful intentions." },
                        { name: "To Alien Homeworld", x: 1100, y: 200, collisionType: "storypartchange", transitionToPart: 2, collisiontext: "After successful communication, the aliens invite you to their homeworld to discuss a potential peace treaty." },
                    ],
                },
                {
                    part: 2,
                    objectives: [
                        {
                            id: 4,
                            name: "Negotiate Peace with the Aliens",
                            complete: false,
                            progress: 0,
                            inventoryRequired: [],
                        },
                        {
                            id: 5,
                            name: "Gather Alien Artifacts",
                            complete: false,
                            progress: 0,
                            inventoryRequired: ["Artifact Scanner"],
                        },
                    ],
                    targets: [
                        { 
                            name: "Alien Council Chamber", 
                            x: 600, 
                            y: 250, 
                            collisionType: "modal", 
                            modalConfig: {
                                title: "Alien Council Chamber",
                                content: "You are in the presence of the Alien Council. Present your case for peace and negotiate terms.",
                                actions: [
                                    { label: "Present Peace Offer", action: "presentPeaceOffer" },
                                    { label: "Listen to Alien Concerns", action: "listenConcerns" },
                                ],
                            }
                        },
                        { 
                            name: "Alien Ruins", 
                            x: 750, 
                            y: 400, 
                            collisionType: "alert", 
                            collisiontext: "You have discovered ancient alien ruins. Use your Artifact Scanner to gather important artifacts." 
                        },
                        { 
                            name: "Return to Human Colony", 
                            x: 800, 
                            y: 150, 
                            collisionType: "storypartchange", 
                            transitionToPart: 3, 
                            collisiontext: "Having successfully negotiated peace and gathered artifacts, return to the Human Colony to share your findings." 
                        },
                    ],
                }
                
                // ... more story parts
            ],
            actions: {
                activateShields() {
                // Logic to activate shields
                },
                scanMinerals() {
                // Logic to scan for rare minerals
                },
                requestBriefing() {
                // Logic to request mission briefing
                },
                purchaseUpgrades() {
                // Logic to purchase ship upgrades
                },
                presentPeaceOffer() {
                    // Logic to present a peace offer to the Alien Council
                    console.log("Presenting peace offer...");
                    // Additional logic for negotiation success or failure
                },
                listenConcerns() {
                    // Logic to listen to the concerns of the Alien Council
                    console.log("Listening to alien concerns...");
                    // Additional logic to address concerns and build trust
                },
                // ... add more space-specific actions
            },
        },
        'Medieval Fantasy': {
              background: '/AutoGameBackgrounds/MedievalFantasyGameLoc.png',
              inventory: [
                { type: "weapon", name: "Longsword", description: "A sturdy steel blade." },
                // ... more medieval items
              ],
              skills: [
                // ... medieval skills
                { branch: "Piloting", name: "Astro Navigation", learned: false },
              ],
              persistentTargets: [
                { name: "Market Stall", x: 200, y: 300, collisionType: "", collisiontext: "" },
                { name: "Inn Entrance", x: 400, y: 450, collisionType: "", collisiontext: "" },
                { name: "Castle", x: 940, y: 460, collisionType: "alert", collisiontext: "The King of this land has summoned you to find and release his champion Daryl the Knight. Find him and free him" },  
                { name: "Hidden Space", x: 460, y: 570, collisionType: "alert", collisiontext: "Seems like a hidden space. Nobody is here currently."},
                    { name: "Home", x: 640, y: 500, collisionType: "modal", modalConfig: {
                        title: "Your Space",
                        content: "Rest and prepare for your tasks. Sometimes you hear noises in the area but this is the area with least interference",
                        actions: [
                            {label: "Ask for guidance on next move", action: "askforDirections"},
                            {label: "Buy an Axe", action: "buyAxeAlert"},
                            // ... more actions if necessary
                        ]},
                    },
                    { name: "Marketplace", x: 1100, y: 470, collisionType: "modal", modalConfig: {
                        title: "Place to find information and items",
                        content: "A bustling marketplace",
                        actions: [
                            {label: "Ask for guidance on next move", action: "askforDirections"},
                            {label: "Buy an Axe", action: "buyAxeAlert"},
                            {label: "Ask about the knight", action: "knightalert", message: "The armourer said he went to see the mini waterfall for some relaxtion"},
                            // ... more actions if necessary
                        ]},
                    },
                { name: "Mini Waterfall", x: 500, y: 640, collisionType: "alert", collisiontext: "A weird waterfall is upfront. It strangely gives a calming vibe. Nobody is here currently but there seems to be a trail of water leading to a closeby location .... "},
                // ... more persistent neutral targets
              ],
              story: [
                {
                    part: 0,
                    objectives: [
                      {
                        id: 1,
                        name: "Investigate the Disappearances",
                        complete: false,
                        progress: 0,
                        inventoryRequired: [],
                      },
                      {
                        id: 6,
                        name: "Rescue the Captured Knight",
                        complete: false,
                        progress: 0,
                        inventoryRequired: ["Longsword"],
                      },
                    ],
                    targets: [
                      { name: "Village Elder's House", x: 500, y: 400, collisionType: "alert", collisiontext: "Greetings, adventurer. Our village is in dire need of your help. People have been disappearing without a trace. Please, investigate and find out what's happening." },
                      { name: "Mysterious Forest", x: 800, y: 200, collisionType: "alert", collisiontext: "As you enter the forest, an eerie silence envelops you. The trees seem to whisper secrets, and the shadows dance with an unnatural rhythm." },
                      { name: "To Goblin Bandits", x: 900, y: 100, collisionType: "storypartchange", transitionToPart: 1, collisiontext: "You notice tracks leading deeper into the forest. They might lead to the missing villagers." },
                    ],
                },
                {
                    part: 1,
                    objectives: [
                      {
                        id: 2,
                        name: "Defeat the Goblin Bandits",
                        complete: false,
                        progress: 0,
                        inventoryRequired: ["Longsword"],
                      },
                    ],
                    targets: [
                      { name: "Bandit Camp", x: 1200, y: 300, collisionType: "alert", collisiontext: "You stumble upon a hidden bandit camp deep in the forest. The goblins spot you and charge, weapons drawn. Prepare for battle!" },
                      { name: "Prisoner Cages", x: 1250, y: 350, collisionType: "alert", collisiontext: "After defeating the goblins, you discover cages containing the missing villagers. You free them, and they share their gratitude and information about a mysterious sorcerer controlling the goblins." },
                      { name: "To Gather Information", x: 1100, y: 200, collisionType: "storypartchange", transitionToPart: 2, collisiontext: "With the villagers safe, you decide to gather more information about the sorcerer in the nearby town." },
                    ],
                  },
                  {
                    part: 2,
                    objectives: [
                      {
                        id: 3,
                        name: "Gather Information about the Sorcerer",
                        complete: false,
                        progress: 0,
                        inventoryRequired: [],
                      },
                    ],
                    targets: [
                      { name: "Tavern", x: 600, y: 500, collisionType: "alert", collisiontext: "You enter the tavern and overhear rumors about the sorcerer. Patrons speak of an ancient tower deep within the mountains where the sorcerer resides." },
                      { name: "Mage's Guild", x: 400, y: 600, collisionType: "alert", collisiontext: "Seeking more information, you visit the Mage's Guild. The guild master provides you with a map to the sorcerer's tower and warns you of the powerful magic protecting it." },
                      { name: "To Enchanted Maze", x: 300, y: 500, collisionType: "storypartchange", transitionToPart: 3, collisiontext: "With the information and map in hand, you set out to navigate the enchanted maze surrounding the sorcerer's tower." },
                    ],
                  },
                  {
                    part: 3,
                    objectives: [
                      {
                        id: 4,
                        name: "Navigate the Enchanted Maze",
                        complete: false,
                        progress: 0,
                        inventoryRequired: ["Mage's Map"],
                      },
                    ],
                    targets: [
                      { name: "Enchanted Maze Entrance", x: 1000, y: 800, collisionType: "dialog", collisiontext: "Following the map, you reach the entrance of an enchanted maze surrounding the sorcerer's tower. The air crackles with magical energy, and illusory walls shift before your eyes." },
                      { name: "Maze Center", x: 1000, y: 900, collisionType: "dialog", collisiontext: "After navigating the maze's twists and turns, you reach its center. A shimmering portal appears, leading directly to the sorcerer's tower." },
                      { name: "To Sorcerer's Chamber", x: 1000, y: 950, collisionType: "storypartchange", transitionToPart: 4, collisiontext: "With determination, you step through the portal, ready to confront the sorcerer and end his tyranny." },
                    ],
                  },
                  {
                    part: 4,
                    objectives: [
                      {
                        id: 5,
                        name: "Confront the Sorcerer",
                        complete: false,
                        progress: 0,
                        inventoryRequired: ["Enchanted Amulet"],
                      },
                    ],
                    targets: [
                      { name: "Sorcerer's Chamber", x: 1200, y: 1000, collisionType: "dialog", collisiontext: "You step through the portal and find yourself in the sorcerer's chamber. The sorcerer, a figure cloaked in dark robes, turns to face you. 'So, you've come to challenge me?' The final battle begins." },
                      { name: "Villagers' Celebration", x: 500, y: 400, collisionType: "dialog", collisiontext: "With the sorcerer defeated, you return to the village as a hero. The villagers gather to celebrate your victory and express their gratitude. Peace has been restored to the land." },
                    ],
                  },
              ],
              actions: {
                knightalert() {
                    alert("The armourer said he went to see the mini waterfall for some relaxtion");
                },
                buyAxeAlert() {
                    money.update(h => h - 10 > 0 ? h - 10 : 0); // Decreases money but never below 0
                    const newItem = {type: "weapon", name: "Axe", description: "A heavy, sharp axe."};
                    addInventoryItem(newItem);  
                },
                askforDirections() {
                    alert("Stranger: Go back to the fountain");
                },
                defendCastle() {
                    // Logic to defend the castle
                },
                slayDragon() {
                    // Logic to slay the dragon
                },
                // ... add more medieval-specific actions
              },
            },
            // ...
        'Cyberpunk': {
            background: '/AutoGameBackgrounds/CyberpunkGameLoc.png',
            inventory: [
                { type: "weapon", name: "Plasma Rifle", description: "A high-tech firearm with plasma rounds." },
                { type: "armor", name: "NanoSuit", description: "Protects with reactive nano technology." },
                { type: "consumable", name: "Stim Pack", description: "Enhances reflexes temporarily." },
                // ... more cyberpunk items
            ],
            // ... skills, objectives, and targets for cyberpunk theme
            skills: [
                { branch: "Hacking", name: "Cyber Intrusion", learned: false },
                { branch: "Combat", name: "Gun Kata", learned: false },
                { branch: "Stealth", name: "Cloaking", learned: false },
                // ... more space skills
            ],
            persistentTargets: [
            ],
            objectives: [ 
                { id: 1, name: "Hack the Mainframe", complete: false, progress: 0 },
                { id: 2, name: "Escape the Megacorp Security", complete: false, progress: 0 },
                { id: 3, name: "Infiltrate the Underground Hacker Group", complete: false, progress: 0 },
                { id: 4, name: "Negotiate a Truce with the Rival Gang", complete: false, progress: 0 },
                { id: 5, name: "Expose the Corrupt Politician", complete: false, progress: 0 },
                { id: 6, name: "Survive the Drone Assault", complete: false, progress: 0 },
                { id: 7, name: "Retrieve the Stolen Cybernetic Tech", complete: false, progress: 0 },
                { id: 8, name: "Win the Street Race in Neo-Tokyo", complete: false, progress: 0 },
                { id: 9, name: "Decrypt the Corporate Data Files", complete: false, progress: 0 },
                { id: 10, name: "Disarm the City-Wide Neural Bomb", complete: false, progress: 0 }
       
                // ... more space objectives
            ],
            story: [
                {
                    part: 0,
                    objectives: [],
                    targets:  [
                    { name: "Target 1", x: 50, y: 50, collisionType: "alert", collisiontext: "First Test"},
                    { name: "MegaCorp Server", x: 200, y: 50, collisionType: "alert", collisiontext: "First Test"},
                    { name: "City Police", x: 50, y: 250, collisionType: "alert", collisiontext: "First Test"},
                    { name: "Rival Gang", x: 550, y: 550, collisionType: "alert", collisiontext: "First Test"},
                    ],
                },
            ],
            actions: {
                Buybook() {
                    // Logic to slay the dragon
                },
            },
            
        },
        'Super Teacher': {
            background: '/AutoGameBackgrounds/SuperTeacherGameLoc.png',
            inventory: [
                { type: "book", name: "Math Advice", description: "Useful topical knowledge." },
                { type: "book", name: "Science Advice", description: "Useful topical knowledge." },
                { type: "book", name: "English Advice", description: "Useful topical knowledge." },
                { type: "book", name: "Economics Advice", description: "Useful topical knowledge." },
                // ... more space items
            ],
            skills: [
                { branch: "Multitask", name: "Movement Speed", learned: false },
                { branch: "Multitask", name: "Stop Window Interference for 1 min", learned: false },
                // ... more space skills
            ],
            persistentTargets: [
                { name: "Super Teacher Toolkit", x: 1000, y: 330, collisionType: "alert", collisiontext: "First Test"},
            ],
            objectives: [
                { id: "Mission 1", name: "Get the children to grade one 1 level", complete: false },
                { id: "Mission 2", name: "Get the children to grade one 2 level", complete: false },
                { id: "Mission 3", name: "Get the children to grade one 3 level", complete: false },
                // ... more space objectives
            ],
            // ... and so on for targets
            story: [
                {
                    part: 0,
                    objectives: [],
                    targets:  [
                    { name: "Random Noise Interference", x: 250, y: 110, collisionType: "alert", collisiontext: "First Test"},
                    { name: "Student 1", x: 310, y: 620, collisionType: "alert", collisiontext: "Attention fully restored. Needs reasoning help with english"},
                    { name: "Student 2", x: 660, y: 610, collisionType: "alert", collisiontext: "Attention fully restored. Doesnt speak english."},
                    { name: "Student 3", x: 1010, y: 620, collisionType: "alert", collisiontext: "Attention fully restored. Needs reasoning help with math"},
                    ],
                },
            ],
            actions: {
                BuybookforStudent() {
                    // Logic to slay the dragon
                },
            },
        },
        'Fantasy Adventure': {
            background: '/AutoGameBackgrounds/eldoria_background.png',
            inventory: [
                { type: "book", name: "Book of Eldrak", description: "An ancient tome containing half of a map." },
                { type: "amulet", name: "Peculiar Amulet", description: "A mysterious amulet bought in Meridia, reveals the unseen." },
                { type: "map", name: "Tattered Map", description: "A map hinting at significant locations within the Whispering Woods." },
                { type: "artifact", name: "Magical Acorn", description: "A gift from the forest spirit, promising future aid." },
                { type: "relic", name: "Shrine Relic", description: "A powerful artifact that enhances magical abilities, found in the Ruined Shrine." },
                { type: "record", name: "Echoing Cave Echoes", description: "A recording of whispers from the Echoing Caves, revealing secrets and hidden paths." },    
                // ... more fantasy items
            ],
            skills: [
                { branch: "Combat", name: "Sword Mastery", learned: false },
                { branch: "Magic", name: "Elemental Control", learned: false },
                { branch: "Lore", name: "Ancient Lore", learned: true, description: "Ability to decipher old texts and understand magical artifacts, gained at the Ruined Shrine." },
                { branch: "Stealth", name: "Eavesdropping", learned: true, description: "Skill in using acoustics to eavesdrop, developed in the Echoing Caves." },
                { branch: "Stealth", name: "Stealth Movement", learned: true, description: "Improved stealth for moving unseen, honed in the Echoing Caves." },
                { branch: "Diplomacy", name: "Negotiation", learned: true, description: "Enhanced negotiation skills, honed through interaction with the spirits of the Forgotten Graveyard." },
                { branch: "Magic", name: "Artifact Mastery", learned: true, description: "Mastery over various magical artifacts collected throughout the journey." },
                // ... more fantasy skills
            ],
            persistentTargets: [
                { name: "Lila's Home", x: 460, y: 600, collisionType: "alert", collisiontext: "A cozy cottage where Lila's quest for knowledge begins."},
                { name: "Eldoria Library", x: 360, y: 620, collisionType: "alert", collisiontext: "A treasure trove of books and maps. Lila spends hours here."},
            ],
            objectives: [
                { id: "FindBook", name: "Find the Book of Eldrak", complete: false },
                { id: "GetAmulet", name: "Acquire the Peculiar Amulet", complete: false },
                { id: "DiscoverArtefact", name: "Uncover the Artefact of Vorin", complete: false },
                { id: "LeaveEldoria", name: "Leave Eldoria's Outskirts", complete: true },
                { id: "VisitAncientOak", name: "Visit the Ancient Oak", complete: true },
                { id: "ExploreCrystalClearing", name: "Explore the Crystal Clearing", complete: true },
                { id: "DiscoverRuinedShrine", name: "Discover the Ruined Shrine", complete: true },
                { id: "NavigateEchoingCaves", name: "Navigate the Echoing Caves", complete: true },
                { id: "UncoverForgottenGraveyard", name: "Uncover the Secrets of the Forgotten Graveyard", complete: true },
                { id: "MasterArtifacts", name: "Master the Use of Collected Artifacts", complete: true },    
                // ... more fantasy objectives
            ],
            story: [
                {
                    part: 0,
                    objectives: [],
                    targets:  [
                        { name: "Eldoria Main Square", x: 410, y: 590, collisionType: "requirementsgated", collisiontext: "The heart of Eldoria, bustling with townsfolk and traders.", requirements: (8)},
                        { name: "Whispering Forest Edge", x: 830, y: 700, collisionType: "alert", collisiontext: "The mysterious forest that borders Eldoria. Lila feels drawn to its secrets."},
                        { name: "Serene Hills", x: 520, y: 490, collisionType: "alert", collisiontext: "Gentle hills that promise adventure beyond Eldoria. Lila often gazes here, dreaming of what lies beyond."},
                        { name: "Marketplace", x: 360, y: 560, collisionType: "alert", collisiontext: "A place of trade and gossip. Lila hears rumors of ancient artifacts here."},
                        { name: "Eldoria", x: 490, y: 420, collisionType: "storypartchange", collisiontext: "Your journey begins in the quaint town of Eldoria.", newStage: 1},
                        { name: "Old Sage's Hut", x: 600, y: 480, collisionType: "alert", collisiontext: "The home of Eldoria's oldest sage. Lila seeks his wisdom for her journey."},
                        { name: "Eldoria's Outskirts", x: 100, y: 10, collisionType: "stats", collisiontext: "Your courage grows as you step into the unknown."},
                        { name: "Tattered Map", x: 200, y: 20, collisionType: "inventory", collisiontext: "You've found a map that hints at significant locations in the Whispering Woods."},
                    ],
                },
                {
                    part: 1,
                    objectives: [],
                    targets:  [
                        { name: "Library of Eldrak", x: 620, y: 600, collisionType: "alert", collisiontext: "You discover the ancient Book of Eldrak."},
                        { name: "Meridia Market", x: 750, y: 590, collisionType: "alert", collisiontext: "A peculiar amulet catches your eye, promising to reveal the unseen."},
                        { name: "Suspicious Place", x: 810, y: 530, collisionType: "decision", collisiontext: "Do you know why you came here?"},
                        { name: "The Ancient Oak", x: 300, y: 130, collisionType: "modal", modalConfig: {
                            title: "The Ancient Oak Area",
                            content: "The Ancient Oak stands before you,",
                            actions: [
                                {label: "Talk to the Ancient Oak", action: "approachAncientOak"},
                                // ... more actions if necessary
                            ]} 
                        },
                        { name: "Magical Acorn", x: 400, y: 140, collisionType: "modal", modalConfig: {
                            title: "Magical Acorn Area",
                            content: "You are drawn to the acorn but as you near it a spirit appears",
                            actions: [
                                {label: "Talk to the spirit", action: "acquireMagicalAcorn"},
                                // ... more actions if necessary
                            ]} 
                        },
                    ],
                },
                {    
                    part: 2,
                    objectives: [],
                    targets:  [
                        { name: "Whispering Woods", x: 400, y: 300, collisionType: "modal", collisiontext: "The woods are dense and mysterious, hiding both allies and secrets."},
                        { name: "The Crystal Clearing", x: 500, y: 50, collisionType: "location", collisiontext: "Visions of potential futures flash before your eyes."},
                        { name: "The Ruined Shrine", x: 600, y: 60, collisionType: "location", collisiontext: "You discover a relic among the ruins, learning about a forgotten deity."},
                    ],
                }, 
                {
                    part: 3,
                    objectives: [],
                    targets:  [
                        { name: "Shadowed Caverns", x: 600, y: 400, collisionType: "fight", collisiontext: "The lair of the Keepers. A test of strength and wit awaits."},
                        { name: "Ancient Lore Skill", x: 370, y: 70, collisionType: "skills", collisiontext: "You've gained the skill to decipher old texts and understand magical artifacts."},
                        { name: "Shrine Relic", x: 480, y: 80, collisionType: "inventory", collisiontext: "This powerful artifact enhances your magical abilities."},
                    ],
                }, 
                {
                    part: 4,
                    objectives: [],
                    targets:  [
                    { name: "Return to Eldoria", x: 100, y: 500, collisionType: "end", collisiontext: "With the Artefact of Vorin, you return, forever changed by your journey."},
                    { name: "Echoing Cave Echoes", x: 90, y: 90, collisionType: "inventory", collisiontext: "You record the cave's whispers, a strategic item."},
                    { name: "Eavesdropping Skill", x: 100, y: 100, collisionType: "skills", collisiontext: "You learn to use the cave's acoustics to eavesdrop."},        
                    ],
                }, 
                {
                    part: 5,
                    objectives: [],
                    targets:  [
                    { name: "Stealth Skill", x: 110, y: 110, collisionType: "skills", collisiontext: "Navigating the caves, you improve your stealth."},
                    { name: "Negotiation Skill", x: 120, y: 120, collisionType: "skills", collisiontext: "You've honed your negotiation skills with the spirits."},
                    ],
                }, 
                {    
                    part: 6,
                    objectives: [],
                    targets:  [
                        { name: "Endurance Increase", x: 130, y: 130, collisionType: "stats", collisiontext: "The trials in the graveyard boost your endurance."},
                        { name: "Intelligence Increase", x: 140, y: 140, collisionType: "stats", collisiontext: "Piecing together clues, your intelligence grows."},
                    ],
                }, 
                {
                    part: 7,
                    objectives: [],
                    targets:  [
                        { name: "Artifact Mastery Skill", x: 150, y: 150, collisionType: "skills", collisiontext: "You master the use of the artifacts you've collected."},
                    ]
                },
                // ... additional story parts as needed
            ],
            actions: {
                Buybook() {
                    // Logic to slay the dragon
                },
            },
        }, 
        'Fantasy Adventure 2': {
            background: '/AutoGameBackgrounds/fantasy_background.png',
            inventory: [
                { type: "weapon", name: "Bow and Arrows", description: "A reliable ranged weapon." },
                { type: "tool", name: "Lockpicks", description: "Used for opening locked doors and chests." },
                { type: "consumable", name: "Healing Potion", description: "Restores health when consumed." },
                { type: "currency", name: "Gold Coins", description: "Used for purchasing items and services." },
            ],
            skills: [
                { branch: "Combat", name: "Archery", learned: false },
                { branch: "Stealth", name: "Lockpicking", learned: false },
                { branch: "Magic", name: "Alchemy", learned: false },
                { branch: "Social", name: "Persuasion", learned: false },
            ],
            persistentTargets: [
                { name: "Villager", x: 500, y: 500, collisionType: "alert", collisiontext: "Welcome to our village, traveler!" },
            ],
            story: [
                {
                    part: 0,
                    objectives: [
                        { id: 1, name: "Retrieve the Lost Amulet", complete: false, progress: 0, inventoryRequired: [], },
                        { id: 2, name: "Gather information about the cave", complete: false, progress: 0, inventoryRequired: [], },
                        { id: 3, name: "Obtain a map of the region", complete: false, progress: 0, inventoryRequired: [], },
                    ],
                    targets: [
                        {
                            name: "Villager 2",
                            x: 100,
                            y: 100,
                            collisionType: "modal",
                            modalConfig: {
                            title: "Conversation with Villager",
                            content: "Hello, traveler! How can I assist you today?",
                            actions: [
                                { label: "Ask for directions", action: "askDirections" },
                                { label: "Buy supplies", action: "buySupplies" },
                                { label: "Inquire about the Lost Amulet", action: "inquireAboutAmulet" },
                                { label: "Goodbye", action: "closeModal" },
                            ],
                            },
                        },
                        {
                            name: "Merchant",
                            x: 300,
                            y: 150,
                            collisionType: "modal",
                            modalConfig: {
                            title: "Merchant's Shop",
                            content: "Welcome to my humble shop! What can I interest you in?",
                            actions: [
                                { label: "Browse wares", action: "browseWares" },
                                { label: "Ask about the cave", action: "askAboutCave" },
                                { label: "Buy a map", action: "buyMap" },
                                { label: "Leave shop", action: "closeModal" },
                            ],
                            },
                        },
                        {
                            name: "Cave Entrance",
                            x: 200,
                            y: 200,
                            collisionType: "modal",
                            modalConfig: {
                            title: "Entering the Cave",
                            content: "You have reached the entrance of a dark and mysterious cave. Do you want to enter?",
                            actions: [
                                { label: "Enter the cave", action: "enterCave" },
                                { label: "Turn back", action: "closeModal" },
                            ],
                            },
                        },
                        {
                            name: "Mysterious Stranger",
                            x: 400,
                            y: 300,
                            collisionType: "modal",
                            modalConfig: {
                            title: "Encounter with a Mysterious Stranger",
                            content: "Greetings, adventurer. You seem to be searching for something. Perhaps I can be of assistance.",
                            actions: [
                                { label: "Ask about the Lost Amulet", action: "askAboutAmulet" },
                                { label: "Inquire about the cave", action: "inquireAboutCave" },
                                { label: "Ignore and walk away", action: "closeModal" },
                            ],
                            },
                        }
                    ],
                },
                {
                    part: 1,
                    objectives: [
                        { id: 11, name: "Rescue the Captured Princess", complete: false, progress: 0, inventoryRequired: [], },
                    ],
                    targets: [
                        { name: "Castle Gate", x: 400, y: 400, collisionType: "alert", collisiontext: "You've reached the castle gates!" },
                    ],
                },
                {
                    part: 2,
                    objectives: [
                    { id: 21, name: "Defeat the Evil Sorcerer", complete: false, progress: 0, inventoryRequired: [], },
                    ],
                    targets: [
                    { name: "Sorcerer's Tower", x: 600, y: 600, collisionType: "alert", collisiontext: "You've arrived at the sorcerer's tower!" },
                    ],
                },
                {
                    part: 3,
                    objectives: [
                    { id: 31, name: "Obtain the Rare Herb", complete: false, progress: 0, inventoryRequired: [], },
                    ],
                    targets: [
                    { name: "Herbalist's Hut", x: 800, y: 800, collisionType: "alert", collisiontext: "You've found the herbalist's hut!" },
                    ],
                },
            ],
            actions: {
                BuyItem(itemName) {
                    // Logic to buy an item from a vendor
                },
                inquireAboutAmulet() {
                    alert("Villager: I've heard tales of a powerful amulet hidden deep within the cave. Be cautious if you seek it.");
                },
                browseWares() {
                // Logic to browse the merchant's wares
                },
                askAboutCave() {
                    alert("Merchant: The cave to the east is known to be filled with dangerous creatures and traps. Proceed with caution.");
                },
                buyMap() {
                // Logic to buy a map from the merchant
                },
                askAboutAmulet() {
                    alert("Stranger: The Lost Amulet possesses great power. It is said to be guarded by ancient guardians within the cave.");
                },
                inquireAboutCave() {
                    alert("Stranger: The cave holds many secrets and challenges. Only the brave and resourceful can navigate its depths.");
                },
            },
        },
        'Constuction' : {
            background: '/AutoGameBackgrounds/ConstructionGameLoc.png',
            inventory: [
                {
                    type: "tool",
                    name: "Hammer",
                    description: "A sturdy hammer for various construction tasks."
                },
                {
                    type: "tool",
                    name: "Screwdriver",
                    description: "A versatile screwdriver for fastening and loosening screws."
                },
                {
                    type: "equipment",
                    name: "Safety Helmet",
                    description: "A hard hat to protect the worker's head from falling objects."
                },
                {
                    type: "equipment",
                    name: "Safety Vest",
                    description: "A high-visibility vest to ensure the worker's safety on site."
                },
                {
                    type: "consumable",
                    name: "Energy Bar",
                    description: "A snack to provide energy and sustenance during the workday."
                }
            ],
            skills: [
                {
                    branch: "Construction",
                    name: "Electrical Wiring",
                    learned: true
                },
                {
                    branch: "Construction",
                    name: "Concrete Pouring",
                    learned: true
                },
                {
                    branch: "Safety",
                    name: "Fall Protection",
                    learned: false
                },
                {
                    branch: "Safety",
                    name: "Hazard Recognition",
                    learned: true
                },
                {
                    branch: "Equipment Operation",
                    name: "Forklift Certification",
                    learned: false
                }
            ],
            persistentTargets: [
                {
                    name: "Blueprints",
                    x: 300,
                    y: 670,
                    collisionType: "alert",
                    collisiontext: "You consult the blueprints to ensure accurate construction."
                },
                {
                    name: "Water Cooler",
                    x: 490,
                    y: 650,
                    collisionType: "alert",
                    collisiontext: "You take a brief break to hydrate and chat with co-workers."
                }
            ],
            story: [
                    {
                    part: 0,
                    objectives: [
                        {
                        id: "Objective1_1",
                        name: "Attend Morning Briefing",
                        complete: false
                        },
                        {
                        id: "Objective1_2",
                        name: "Gather Required Tools",
                        complete: false
                        }
                    ],
                    targets: [
                        {
                        name: "Construction Site",
                        x: 470,
                        y: 310,
                        collisionType: "alert",
                        collisiontext: "You arrive at the construction site, ready to start the day."
                        },
                        {
                        name: "Foreman's Office",
                        x: 1270,
                        y: 690,
                        collisionType: "alert",
                        collisiontext: "You attend the morning briefing with the foreman and receive your tasks for the day."
                        },
                        {
                        name: "Tool Shed",
                        x: 430,
                        y: 540,
                        collisionType: "alert",
                        collisiontext: "You gather the necessary tools and equipment for your assigned tasks."
                        },
                        {
                        name: "Continue Construction",
                        x: 1100,
                        y: 520,
                        collisionType: "storypartchange",
                        transitionToPart: 1,
                        collisiontext: "Continue to specific tasks after arriving",
                        }
                    ]
                    },
                    {
                    part: 1,
                    objectives: [
                        {
                        id: "Objective2_1",
                        name: "Install Electrical Wiring",
                        complete: false
                        },
                        {
                        id: "Objective2_2",
                        name: "Assist with Concrete Pouring",
                        complete: false
                        },
                        {
                        id: "Objective2_3",
                        name: "Attend Safety Training",
                        complete: false
                        }
                    ],
                    targets: [
                        {
                        name: "Electrical Room",
                        x: 37,
                        y: 13,
                        collisionType: "alert",
                        collisiontext: "You begin installing electrical wiring according to the blueprints."
                        },
                        {
                        name: "Foundation Area",
                        x: 370,
                        y: 50,
                        collisionType: "alert",
                        collisiontext: "You assist the team in pouring concrete for the building's foundation."
                        },
                        {
                        name: "Safety Meeting Point",
                        x: 530,
                        y: 160,
                        collisionType: "alert",
                        collisiontext: "You attend a mandatory safety training session to ensure a secure working environment."
                        },
                        {
                        name: "Lunch Break Area",
                        x: 820,
                        y: 540,
                        collisionType: "alert",
                        collisiontext: "You take a well-deserved lunch break with your co-workers."
                        }
                    ]
                    },
                    {
                    part: 2,
                    objectives: [
                        {
                        id: "Objective3_1",
                        name: "Inspect Completed Work",
                        complete: false
                        },
                        {
                        id: "Objective3_2",
                        name: "Clean Up and Secure Site",
                        complete: false
                        }
                    ],
                    targets: [
                        {
                        name: "Inspection Point",
                        x: 90,
                        y: 600,
                        collisionType: "alert",
                        collisiontext: "You inspect the completed work to ensure it meets the required standards."
                        },
                        {
                        name: "Equipment Storage",
                        x: 220,
                        y: 800,
                        collisionType: "alert",
                        collisiontext: "You clean up your tools and equipment and store them properly."
                        },
                        {
                        name: "Site Exit",
                        x: 900,
                        y: 900,
                        collisionType: "alert",
                        collisiontext: "You secure the construction site and leave for the day, feeling accomplished."
                        }
                    ]
                }
            ]
        },
        'Test for graph format': {
            background: '/AutoGameBackgrounds/theme_background.png',
            inventory: [
                { type: "weapon", name: "Random waepon", description: "A powerful weapon." },
                // ... more space items
            ],
            skills: [
                { branch: "Skill Group 1", name: "Skill One", learned: false },
                // ... more space skills
            ],
            persistentTargets: [
                { name: "Background Target 1", x: 500, y: 500, collisionType: "alert", collisiontext: "First Test"},
            ],
            // ... and so on for targets
            story: [
                {
                    part: 0,
                    objectives: [
                        { id: 1, 
                        name: "Mission Details", 
                        complete: false,
                        progress: 0,
                        inventoryRequired: [],  },
                    ],
                    targets:  [
                    { name: "Target 1", x: 150, y: 150, collisionType: "alert", collisiontext: "First Test"},
                    { name: "Switch to Target 2", x: 600, y: 400, collisionType: "storypartchange",  collisiontext: "Test", transitionToPart: 1},
                    ],
                },
                {
                    part: 1,
                    objectives: [
                        { id: 2, 
                        name: "Mission Details", 
                        complete: false,
                        progress: 0,
                        inventoryRequired: [],  },
                    ],
                    targets:  [
                    { name: "Target 2", x: 250, y: 250, collisionType: "alert", collisiontext: "First Test"},
                    {
                        name: "substory1",
                        x: 600,
                        y: 600,
                        collisionType: "smmodal",
                        modalStates: {
                          A: {
                            title: "Event 1",
                            content: "You are at Event 1. What would you like to do next?",
                            items: [
                              {
                                label: "To Event 3",
                                action: "C"
                              },
                              {
                                label: "To Event 5",
                                action: "E"
                              },
                              {
                                label: "To Event 7",
                                action: "G"
                              },
                              {
                                label: "Next: Event 2",
                                action: "B"
                              }
                            ],
                            consequences: [
                      
                            ]
                          },
                          B: {
                            title: "Event 2",
                            content: "You are at Event 2. What would you like to do next?",
                            items: [
                              {
                                label: "To Event 5",
                                action: "E"
                              },
                              {
                                label: "To Event 3",
                                action: "C"
                              },
                              {
                                label: "To Event 5",
                                action: "E"
                              },
                              {
                                label: "To Event 7",
                                action: "G"
                              },
                              {
                                label: "Next: Event 3",
                                action: "C"
                              }
                            ],
                            consequences: [
                      
                            ]
                          },
                          C: {
                            title: "Event 3",
                            content: "You are at Event 3. What would you like to do next?",
                            items: [
                              {
                                label: "Next: Event 4",
                                action: "D"
                              }
                            ],
                            consequences: [
                      
                            ]
                          },
                          D: {
                            title: "Event 4",
                            content: "You are at Event 4. What would you like to do next?",
                            items: [
                              {
                                label: "To Event 6",
                                action: "F"
                              },
                              {
                                label: "Next: Event 5",
                                action: "E"
                              }
                            ],
                            consequences: [
                      
                            ]
                          },
                          E: {
                            title: "Event 5",
                            content: "You are at Event 5. What would you like to do next?",
                            items: [
                              {
                                label: "Next: Event 6",
                                action: "F"
                              }
                            ],
                            consequences: [
                      
                            ]
                          },
                          F: {
                            title: "Event 6",
                            content: "You are at Event 6. What would you like to do next?",
                            items: [
                              {
                                label: "To Event 4",
                                action: "D"
                              },
                              {
                                label: "To Event 1",
                                action: "A"
                              },
                              {
                                label: "Next: Event 7",
                                action: "G"
                              }
                            ],
                            consequences: [
                      
                            ]
                          },
                          G: {
                            title: "Event 7",
                            content: "You are at Event 7. What would you like to do next?",
                            items: [
                      
                            ],
                            consequences: [
                      
                            ]
                          }
                        }
                    },
                    {
                        name: "substory3",
                        x: 650,
                        y: 800,
                        collisionType: "smmodal",
                        modalStates: {
                            A: {
                            title: "Event 1",
                            content: "You are at Event 1. What would you like to do next?",
                            items: [{label:"Next: Event 2",action:"B"}],
                            consequences: [],
                        },
                            B: {
                            title: "Event 2",
                            content: "You are at Event 2. What would you like to do next?",
                            items: [{"label":"Next: Event 3","action":"C"}],
                            consequences: [],
                        },
                            C: {
                            title: "Event 3",
                            content: "You are at Event 3. What would you like to do next?",
                            items: [{"label":"Next: Event 4","action":"D"}],
                            consequences: [],
                        },
                            D: {
                            title: "Event 4",
                            content: "You are at Event 4. What would you like to do next?",
                            items: [{"label":"To Event 2","action":"B"},{"label":"To Event 2","action":"B"},{"label":"To Event 7","action":"G"},{"label":"Next: Event 5","action":"E"}],
                            consequences: [],
                        },
                            E: {
                            title: "Event 5",
                            content: "You are at Event 5. What would you like to do next?",
                            items: [{"label":"To Event 7","action":"G"},{"label":"To Event 2","action":"B"},{"label":"To Event 3","action":"C"},{"label":"Next: Event 6","action":"F"}],
                            consequences: [],
                        },
                            F: {
                            title: "Event 6",
                            content: "You are at Event 6. What would you like to do next?",
                            items: [{"label":"To Event 1","action":"A"},{"label":"Next: Event 7","action":"G"}],
                            consequences: [],
                        },
                            G: {
                            title: "Event 7",
                            content: "You are at Event 7. What would you like to do next?",
                            items: [{"label":"To Event 3","action":"C"},{"label":"To Event 6","action":"F"},{"label":"To Event 5","action":"E"}],
                            consequences: [],
                        }
                      }
                    },
                    {
                        "name": "Story made 310524",
                        "x": 500,
                        "y": 100,
                        "collisionType": "smmodal",
                        "modalStates": {
                            "A": {
                                "title": "Explore Location",
                                "content": "Aria, an adventurous young woman, sets out to explore the ancient ruins of Eldoria. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Discover Clue",
                                        "action": "B"
                                    },
                                    {
                                        "label": "Next: Discover Clue",
                                        "action": "B"
                                    }
                                ],
                                "consequences": []
                            },
                            "B": {
                                "title": "Discover Clue",
                                "content": "Inside the ruins, Aria finds a faded mural depicting a secret chamber hidden deep within the labyrinth. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Meet Character",
                                        "action": "C"
                                    },
                                    {
                                        "label": "Next: Meet Character",
                                        "action": "C"
                                    }
                                ],
                                "consequences": []
                            },
                            "C": {
                                "title": "Meet Character",
                                "content": "Aria meets Eamon, a seasoned explorer who has been searching for the relic for years. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Solve Riddle",
                                        "action": "D"
                                    },
                                    {
                                        "label": "Next: Solve Riddle",
                                        "action": "D"
                                    }
                                ],
                                "consequences": []
                            },
                            "D": {
                                "title": "Solve Riddle",
                                "content": "Together, they decipher an ancient riddle inscribed on the mural. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Find Item",
                                        "action": "E"
                                    },
                                    {
                                        "label": "Next: Find Item",
                                        "action": "E"
                                    }
                                ],
                                "consequences": []
                            },
                            "E": {
                                "title": "Find Item",
                                "content": "In a hidden alcove, they discover an old, ornate key. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Face Challenge",
                                        "action": "F"
                                    },
                                    {
                                        "label": "Next: Face Challenge",
                                        "action": "F"
                                    }
                                ],
                                "consequences": []
                            },
                            "F": {
                                "title": "Face Challenge",
                                "content": "They encounter various challenges, including traps and puzzles. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Make Decision",
                                        "action": "G"
                                    },
                                    {
                                        "label": "Next: Make Decision",
                                        "action": "G"
                                    }
                                ],
                                "consequences": []
                            },
                            "G": {
                                "title": "Make Decision",
                                "content": "Aria and Eamon must decide whether to take a dangerous shortcut. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Engage Battle",
                                        "action": "H"
                                    },
                                    {
                                        "label": "Next: Engage Battle",
                                        "action": "H"
                                    }
                                ],
                                "consequences": []
                            },
                            "H": {
                                "title": "Engage Battle",
                                "content": "In the cavern, they face a fierce guardian beast. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Unlock Ability",
                                        "action": "I"
                                    },
                                    {
                                        "label": "Next: Unlock Ability",
                                        "action": "I"
                                    }
                                ],
                                "consequences": []
                            },
                            "I": {
                                "title": "Unlock Ability",
                                "content": "Eamon reveals a hidden talent for deciphering ancient texts. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Learn Secret",
                                        "action": "J"
                                    },
                                    {
                                        "label": "Next: Learn Secret",
                                        "action": "J"
                                    }
                                ],
                                "consequences": []
                            },
                            "J": {
                                "title": "Learn Secret",
                                "content": "They learn about the true nature of the relic. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Complete Mission",
                                        "action": "K"
                                    },
                                    {
                                        "label": "Next: Complete Mission",
                                        "action": "K"
                                    }
                                ],
                                "consequences": []
                            },
                            "K": {
                                "title": "Complete Mission",
                                "content": "Aria and Eamon finally reach the chamber and retrieve the relic. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Experience Setback",
                                        "action": "L"
                                    },
                                    {
                                        "label": "Next: Experience Setback",
                                        "action": "L"
                                    }
                                ],
                                "consequences": []
                            },
                            "L": {
                                "title": "Experience Setback",
                                "content": "As they exit the chamber, the ruins begin to collapse. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Earn Reward",
                                        "action": "M"
                                    },
                                    {
                                        "label": "Next: Earn Reward",
                                        "action": "M"
                                    }
                                ],
                                "consequences": []
                            },
                            "M": {
                                "title": "Earn Reward",
                                "content": "They find a hidden cache containing valuable treasures. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Uncover Mystery",
                                        "action": "N"
                                    },
                                    {
                                        "label": "Next: Uncover Mystery",
                                        "action": "N"
                                    }
                                ],
                                "consequences": []
                            },
                            "N": {
                                "title": "Uncover Mystery",
                                "content": "They discover a scroll revealing the existence of other relics. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Form Alliance",
                                        "action": "O"
                                    },
                                    {
                                        "label": "Next: Form Alliance",
                                        "action": "O"
                                    }
                                ],
                                "consequences": []
                            },
                            "O": {
                                "title": "Form Alliance",
                                "content": "Aria and Eamon pledge to work together to find the remaining relics. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Face Betrayal",
                                        "action": "P"
                                    },
                                    {
                                        "label": "Next: Face Betrayal",
                                        "action": "P"
                                    }
                                ],
                                "consequences": []
                            },
                            "P": {
                                "title": "Face Betrayal",
                                "content": "They encounter a former ally who betrays them. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Confront Nemesis",
                                        "action": "Q"
                                    },
                                    {
                                        "label": "Next: Confront Nemesis",
                                        "action": "Q"
                                    }
                                ],
                                "consequences": []
                            },
                            "Q": {
                                "title": "Confront Nemesis",
                                "content": "They confront the main antagonist, a powerful sorcerer. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Make Discovery",
                                        "action": "R"
                                    },
                                    {
                                        "label": "Next: Make Discovery",
                                        "action": "R"
                                    }
                                ],
                                "consequences": []
                            },
                            "R": {
                                "title": "Make Discovery",
                                "content": "They discover an ancient prophecy foretelling their quest. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Overcome Loss",
                                        "action": "S"
                                    },
                                    {
                                        "label": "Next: Overcome Loss",
                                        "action": "S"
                                    }
                                ],
                                "consequences": []
                            },
                            "S": {
                                "title": "Overcome Loss",
                                "content": "They mourn the loss of allies and friends who fell during their quest. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Achieve Victory",
                                        "action": "T"
                                    },
                                    {
                                        "label": "Next: Achieve Victory",
                                        "action": "T"
                                    }
                                ],
                                "consequences": []
                            },
                            "T": {
                                "title": "Achieve Victory",
                                "content": "With the sorcerer defeated and the relics secured, Aria and Eamon achieve a great victory. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Continue the Adventure",
                                        "action": "U"
                                    },
                                    {
                                        "label": "Next: Continue the Adventure",
                                        "action": "U"
                                    }
                                ],
                                "consequences": []
                            },
                            "U": {
                                "title": "Continue the Adventure",
                                "content": "Aria and Eamon continue their quest, knowing that their adventure is far from over.",
                                "items": [],
                                "consequences": []
                            }
                        }
                    },                
                    {
                        name: "substory2",
                        x: 700,
                        y: 700,
                        collisionType: "smmodal",
                        modalStates: {
                            "A": {
                                "title": "Event 1",
                                "content": "You are at Event 1. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "To Event 2",
                                        "action": "B"
                                    },
                                    {
                                        "label": "Next: Event 2",
                                        "action": "B"
                                    }
                                ],
                                "consequences": []
                            },
                            "B": {
                                "title": "Event 2",
                                "content": "You are at Event 2. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "To Event 7",
                                        "action": "G"
                                    },
                                    {
                                        "label": "To Event 1",
                                        "action": "A"
                                    },
                                    {
                                        "label": "To Event 6",
                                        "action": "F"
                                    },
                                    {
                                        "label": "Next: Event 3",
                                        "action": "C"
                                    }
                                ],
                                "consequences": []
                            },
                            "C": {
                                "title": "Event 3",
                                "content": "You are at Event 3. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "To Event 4",
                                        "action": "D"
                                    },
                                    {
                                        "label": "To Event 7",
                                        "action": "G"
                                    },
                                    {
                                        "label": "Next: Event 4",
                                        "action": "D"
                                    }
                                ],
                                "consequences": []
                            },
                            "D": {
                                "title": "Event 4",
                                "content": "You are at Event 4. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "To Event 7",
                                        "action": "G"
                                    },
                                    {
                                        "label": "To Event 6",
                                        "action": "F"
                                    },
                                    {
                                        "label": "Next: Event 5",
                                        "action": "E"
                                    }
                                ],
                                "consequences": []
                            },
                            "E": {
                                "title": "Event 5",
                                "content": "You are at Event 5. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "To Event 6",
                                        "action": "F"
                                    },
                                    {
                                        "label": "To Event 1",
                                        "action": "A"
                                    },
                                    {
                                        "label": "Next: Event 6",
                                        "action": "F"
                                    }
                                ],
                                "consequences": []
                            },
                            "F": {
                                "title": "Event 6",
                                "content": "You are at Event 6. What would you like to do next?",
                                "items": [
                                    {
                                        "label": "Next: Event 7",
                                        "action": "G"
                                    }
                                ],
                                "consequences": []
                            },
                            "G": {
                                "title": "Event 7",
                                "content": "You are at Event 7. What would you like to do next?",
                                "items": [],
                                "consequences": []
                            }
                        }
                    },
                    ],
                },
            ],
            actions: {
                Buybook() {
                    // Logic to slay the dragon
                },
            },
            stateobjects: {
                // For location based story within a part
            },
        },
    };

    /* src\MovingDotSpacePortfromReact.svelte generated by Svelte v3.59.2 */

    const { Object: Object_1$2, console: console_1$8 } = globals;

    const file$f = "src\\MovingDotSpacePortfromReact.svelte";

    function get_each_context$c(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[31] = list[i];
    	return child_ctx;
    }

    function get_each_context_1$7(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[34] = list[i];
    	return child_ctx;
    }

    // (321:4) {#each themeKeys as key}
    function create_each_block_1$7(ctx) {
    	let option;
    	let t_value = /*key*/ ctx[34] + "";
    	let t;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = /*key*/ ctx[34];
    			option.value = option.__value;
    			add_location(option, file$f, 321, 8, 13237);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$7.name,
    		type: "each",
    		source: "(321:4) {#each themeKeys as key}",
    		ctx
    	});

    	return block;
    }

    // (334:4) {#each $targets as target (target.name)}
    function create_each_block$c(key_1, ctx) {
    	let first;
    	let target;
    	let t0;
    	let span;
    	let t1_value = /*target*/ ctx[31].name + "";
    	let t1;
    	let current;

    	target = new MovingDotTargetPortfromReact({
    			props: { position: /*target*/ ctx[31] },
    			$$inline: true
    		});

    	const block = {
    		key: key_1,
    		first: null,
    		c: function create() {
    			first = empty();
    			create_component(target.$$.fragment);
    			t0 = space();
    			span = element$1("span");
    			t1 = text(t1_value);
    			set_style(span, "position", "absolute");
    			set_style(span, "left", /*target*/ ctx[31].x + "px");
    			set_style(span, "top", /*target*/ ctx[31].y + "px");
    			add_location(span, file$f, 335, 8, 14538);
    			this.first = first;
    		},
    		m: function mount(target$1, anchor) {
    			insert_dev(target$1, first, anchor);
    			mount_component(target, target$1, anchor);
    			insert_dev(target$1, t0, anchor);
    			insert_dev(target$1, span, anchor);
    			append_dev(span, t1);
    			current = true;
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;
    			const target_changes = {};
    			if (dirty[0] & /*$targets*/ 4096) target_changes.position = /*target*/ ctx[31];
    			target.$set(target_changes);
    			if ((!current || dirty[0] & /*$targets*/ 4096) && t1_value !== (t1_value = /*target*/ ctx[31].name + "")) set_data_dev(t1, t1_value);

    			if (!current || dirty[0] & /*$targets*/ 4096) {
    				set_style(span, "left", /*target*/ ctx[31].x + "px");
    			}

    			if (!current || dirty[0] & /*$targets*/ 4096) {
    				set_style(span, "top", /*target*/ ctx[31].y + "px");
    			}
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(target.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(target.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(first);
    			destroy_component(target, detaching);
    			if (detaching) detach_dev(t0);
    			if (detaching) detach_dev(span);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$c.name,
    		type: "each",
    		source: "(334:4) {#each $targets as target (target.name)}",
    		ctx
    	});

    	return block;
    }

    // (340:4) {#if isModalOpen}
    function create_if_block_1$3(ctx) {
    	let modal;
    	let current;

    	modal = new MovingDotSpaceSimpleModal({
    			props: {
    				isOpen: /*isModalOpen*/ ctx[3],
    				onClose: /*handleModalClose*/ ctx[20],
    				title: /*currentcollisiontitletext*/ ctx[5],
    				content: /*currentcollisiontext*/ ctx[6],
    				items: /*currentcollisionitems*/ ctx[7],
    				currentTheme: /*currentTheme*/ ctx[10],
    				themeActions: themes[/*currentTheme*/ ctx[10]].actions
    			},
    			$$inline: true
    		});

    	const block = {
    		c: function create() {
    			create_component(modal.$$.fragment);
    		},
    		m: function mount(target, anchor) {
    			mount_component(modal, target, anchor);
    			current = true;
    		},
    		p: function update(ctx, dirty) {
    			const modal_changes = {};
    			if (dirty[0] & /*isModalOpen*/ 8) modal_changes.isOpen = /*isModalOpen*/ ctx[3];
    			if (dirty[0] & /*currentcollisiontitletext*/ 32) modal_changes.title = /*currentcollisiontitletext*/ ctx[5];
    			if (dirty[0] & /*currentcollisiontext*/ 64) modal_changes.content = /*currentcollisiontext*/ ctx[6];
    			if (dirty[0] & /*currentcollisionitems*/ 128) modal_changes.items = /*currentcollisionitems*/ ctx[7];
    			if (dirty[0] & /*currentTheme*/ 1024) modal_changes.currentTheme = /*currentTheme*/ ctx[10];
    			if (dirty[0] & /*currentTheme*/ 1024) modal_changes.themeActions = themes[/*currentTheme*/ ctx[10]].actions;
    			modal.$set(modal_changes);
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(modal.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(modal.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			destroy_component(modal, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_1$3.name,
    		type: "if",
    		source: "(340:4) {#if isModalOpen}",
    		ctx
    	});

    	return block;
    }

    // (344:4) {#if isSMModalOpen}
    function create_if_block$7(ctx) {
    	let smmodal;
    	let current;

    	smmodal = new SimpleStateMachineModal({
    			props: {
    				isOpen: /*isSMModalOpen*/ ctx[4],
    				onClose: /*handleModalClose*/ ctx[20],
    				modalStates: /*currentstatemodalstates*/ ctx[9]
    			},
    			$$inline: true
    		});

    	const block = {
    		c: function create() {
    			create_component(smmodal.$$.fragment);
    		},
    		m: function mount(target, anchor) {
    			mount_component(smmodal, target, anchor);
    			current = true;
    		},
    		p: function update(ctx, dirty) {
    			const smmodal_changes = {};
    			if (dirty[0] & /*isSMModalOpen*/ 16) smmodal_changes.isOpen = /*isSMModalOpen*/ ctx[4];
    			if (dirty[0] & /*currentstatemodalstates*/ 512) smmodal_changes.modalStates = /*currentstatemodalstates*/ ctx[9];
    			smmodal.$set(smmodal_changes);
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(smmodal.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(smmodal.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			destroy_component(smmodal, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$7.name,
    		type: "if",
    		source: "(344:4) {#if isSMModalOpen}",
    		ctx
    	});

    	return block;
    }

    // (355:0) <SimpleCollapsible title="Some practice modal ideas - how to solve the import issue (have to import all modals all the time?)">
    function create_default_slot$1(ctx) {
    	let h10;
    	let t1;
    	let fighttest;
    	let t2;
    	let fightasalltest;
    	let t3;
    	let modaltest;
    	let t4;
    	let h11;
    	let t6;
    	let findtest;
    	let t7;
    	let h12;
    	let t9;
    	let ordertest;
    	let current;
    	fighttest = new MovingDotSpaceGameFight({ $$inline: true });
    	fightasalltest = new MovingDotSpaceGameFightMultiTheme({ $$inline: true });
    	modaltest = new MovingDotSpaceModalBrainstorm({ $$inline: true });
    	findtest = new MovingDotSpaceGameFind({ $$inline: true });
    	ordertest = new MovingDotSpaceGameOrder({ $$inline: true });

    	const block = {
    		c: function create() {
    			h10 = element$1("h1");
    			h10.textContent = "Expand this to allow up to 100 fighters on each side";
    			t1 = space();
    			create_component(fighttest.$$.fragment);
    			t2 = space();
    			create_component(fightasalltest.$$.fragment);
    			t3 = space();
    			create_component(modaltest.$$.fragment);
    			t4 = space();
    			h11 = element$1("h1");
    			h11.textContent = "Find games are choices between similar looking items missing information with limited information (Luck = More Targets)";
    			t6 = space();
    			create_component(findtest.$$.fragment);
    			t7 = space();
    			h12 = element$1("h1");
    			h12.textContent = "Find out/ make sense / Resolve Conflict = order mixed up and";
    			t9 = space();
    			create_component(ordertest.$$.fragment);
    			add_location(h10, file$f, 355, 4, 15536);
    			add_location(h11, file$f, 359, 4, 15665);
    			add_location(h12, file$f, 361, 4, 15818);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h10, anchor);
    			insert_dev(target, t1, anchor);
    			mount_component(fighttest, target, anchor);
    			insert_dev(target, t2, anchor);
    			mount_component(fightasalltest, target, anchor);
    			insert_dev(target, t3, anchor);
    			mount_component(modaltest, target, anchor);
    			insert_dev(target, t4, anchor);
    			insert_dev(target, h11, anchor);
    			insert_dev(target, t6, anchor);
    			mount_component(findtest, target, anchor);
    			insert_dev(target, t7, anchor);
    			insert_dev(target, h12, anchor);
    			insert_dev(target, t9, anchor);
    			mount_component(ordertest, target, anchor);
    			current = true;
    		},
    		p: noop$2,
    		i: function intro(local) {
    			if (current) return;
    			transition_in(fighttest.$$.fragment, local);
    			transition_in(fightasalltest.$$.fragment, local);
    			transition_in(modaltest.$$.fragment, local);
    			transition_in(findtest.$$.fragment, local);
    			transition_in(ordertest.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(fighttest.$$.fragment, local);
    			transition_out(fightasalltest.$$.fragment, local);
    			transition_out(modaltest.$$.fragment, local);
    			transition_out(findtest.$$.fragment, local);
    			transition_out(ordertest.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h10);
    			if (detaching) detach_dev(t1);
    			destroy_component(fighttest, detaching);
    			if (detaching) detach_dev(t2);
    			destroy_component(fightasalltest, detaching);
    			if (detaching) detach_dev(t3);
    			destroy_component(modaltest, detaching);
    			if (detaching) detach_dev(t4);
    			if (detaching) detach_dev(h11);
    			if (detaching) detach_dev(t6);
    			destroy_component(findtest, detaching);
    			if (detaching) detach_dev(t7);
    			if (detaching) detach_dev(h12);
    			if (detaching) detach_dev(t9);
    			destroy_component(ordertest, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_default_slot$1.name,
    		type: "slot",
    		source: "(355:0) <SimpleCollapsible title=\\\"Some practice modal ideas - how to solve the import issue (have to import all modals all the time?)\\\">",
    		ctx
    	});

    	return block;
    }

    function create_fragment$f(ctx) {
    	let t0;
    	let select;
    	let t1;
    	let button0;
    	let t3;
    	let button1;
    	let t5;
    	let dotgamethememanager;
    	let t6;
    	let div1;
    	let canvas_1;
    	let t7;
    	let movingdot;
    	let t8;
    	let div0;
    	let t9;
    	let t10_value = /*$dotPosition*/ ctx[0].x + "";
    	let t10;
    	let t11;
    	let t12_value = /*$dotPosition*/ ctx[0].y + "";
    	let t12;
    	let t13;
    	let t14;
    	let each_blocks = [];
    	let each1_lookup = new Map();
    	let t15;
    	let t16;
    	let t17;
    	let h4;
    	let t19;
    	let movingdotstats;
    	let t20;
    	let h1;
    	let t22;
    	let hr;
    	let t23;
    	let simplecollapsible;
    	let current;
    	let mounted;
    	let dispose;
    	let each_value_1 = /*themeKeys*/ ctx[15];
    	validate_each_argument(each_value_1);
    	let each_blocks_1 = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks_1[i] = create_each_block_1$7(get_each_context_1$7(ctx, each_value_1, i));
    	}

    	dotgamethememanager = new MovingDotSpaceThemeManager({
    			props: {
    				ChangedContentPlaceholder: /*ChangedContentPlaceholdertoSend*/ ctx[1]
    			},
    			$$inline: true
    		});

    	let movingdot_props = {
    		position: /*$dotPosition*/ ctx[0],
    		boundaries: /*boundaries*/ ctx[14]
    	};

    	movingdot = new MovingDotPortfromReact({ props: movingdot_props, $$inline: true });
    	/*movingdot_binding*/ ctx[24](movingdot);
    	movingdot.$on("move", /*move_handler*/ ctx[25]);
    	let each_value = /*$targets*/ ctx[12];
    	validate_each_argument(each_value);
    	const get_key = ctx => /*target*/ ctx[31].name;
    	validate_each_keys(ctx, each_value, get_each_context$c, get_key);

    	for (let i = 0; i < each_value.length; i += 1) {
    		let child_ctx = get_each_context$c(ctx, each_value, i);
    		let key = get_key(child_ctx);
    		each1_lookup.set(key, each_blocks[i] = create_each_block$c(key, child_ctx));
    	}

    	let if_block0 = /*isModalOpen*/ ctx[3] && create_if_block_1$3(ctx);
    	let if_block1 = /*isSMModalOpen*/ ctx[4] && create_if_block$7(ctx);
    	movingdotstats = new MovingDotStatDisplay({ $$inline: true });

    	simplecollapsible = new SimpleCollapsible({
    			props: {
    				title: "Some practice modal ideas - how to solve the import issue (have to import all modals all the time?)",
    				$$slots: { default: [create_default_slot$1] },
    				$$scope: { ctx }
    			},
    			$$inline: true
    		});

    	const block = {
    		c: function create() {
    			t0 = text("Game Selector\r\n");
    			select = element$1("select");

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				each_blocks_1[i].c();
    			}

    			t1 = text("\r\n | \r\n");
    			button0 = element$1("button");
    			button0.textContent = "Test load for the auto gen config from streamlined JSON assist";
    			t3 = space();
    			button1 = element$1("button");
    			button1.textContent = "Test load for the auto gen config from Graph data to JSON Conversion";
    			t5 = space();
    			create_component(dotgamethememanager.$$.fragment);
    			t6 = space();
    			div1 = element$1("div");
    			canvas_1 = element$1("canvas");
    			t7 = space();
    			create_component(movingdot.$$.fragment);
    			t8 = space();
    			div0 = element$1("div");
    			t9 = text("Minor Game Events Log for player ||| Position for Developer ");
    			t10 = text(t10_value);
    			t11 = space();
    			t12 = text(t12_value);
    			t13 = text(" - TODO - Story Line / Avatars? / Clock System ||| For Job Experience focused Stats can be Emotions Stress Frustration Relief Tiredness Confidence (Percieved Skill) Experience (Actual Skill)");
    			t14 = space();

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t15 = space();
    			if (if_block0) if_block0.c();
    			t16 = space();
    			if (if_block1) if_block1.c();
    			t17 = space();
    			h4 = element$1("h4");
    			h4.textContent = "Gameplay Dependent:";
    			t19 = space();
    			create_component(movingdotstats.$$.fragment);
    			t20 = space();
    			h1 = element$1("h1");
    			h1.textContent = "Simple Game is normally just story with fighting and traversing mechanics repeated in between videos with as heavy customisation of any part of the game as possible";
    			t22 = space();
    			hr = element$1("hr");
    			t23 = space();
    			create_component(simplecollapsible.$$.fragment);
    			if (/*currentTheme*/ ctx[10] === void 0) add_render_callback(() => /*select_change_handler*/ ctx[22].call(select));
    			add_location(select, file$f, 319, 0, 13139);
    			add_location(button0, file$f, 325, 0, 13302);
    			add_location(button1, file$f, 326, 0, 13416);
    			set_style(canvas_1, "width", "100%");
    			set_style(canvas_1, "height", "100%");
    			attr_dev(canvas_1, "tabindex", "0");
    			add_location(canvas_1, file$f, 330, 4, 13874);
    			attr_dev(div0, "id", "overlayText");
    			attr_dev(div0, "class", "svelte-c2nwl9");
    			add_location(div0, file$f, 332, 4, 14132);
    			attr_dev(div1, "id", "game-container");
    			set_style(div1, "position", "relative");
    			set_style(div1, "width", "100%");
    			set_style(div1, "height", "100vh");
    			set_style(div1, "border", "1px solid black");
    			set_style(div1, "overflow", "hidden");
    			set_style(div1, "background-image", "url('" + /*CurrentGameBackground*/ ctx[11] + "')");
    			set_style(div1, "background-size", "cover");
    			set_style(div1, "background-position", "center");
    			add_location(div1, file$f, 329, 0, 13641);
    			add_location(h4, file$f, 349, 0, 15169);
    			add_location(h1, file$f, 351, 0, 15220);
    			add_location(hr, file$f, 352, 0, 15395);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, t0, anchor);
    			insert_dev(target, select, anchor);

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				if (each_blocks_1[i]) {
    					each_blocks_1[i].m(select, null);
    				}
    			}

    			select_option(select, /*currentTheme*/ ctx[10], true);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, button0, anchor);
    			insert_dev(target, t3, anchor);
    			insert_dev(target, button1, anchor);
    			insert_dev(target, t5, anchor);
    			mount_component(dotgamethememanager, target, anchor);
    			insert_dev(target, t6, anchor);
    			insert_dev(target, div1, anchor);
    			append_dev(div1, canvas_1);
    			/*canvas_1_binding*/ ctx[23](canvas_1);
    			append_dev(div1, t7);
    			mount_component(movingdot, div1, null);
    			append_dev(div1, t8);
    			append_dev(div1, div0);
    			append_dev(div0, t9);
    			append_dev(div0, t10);
    			append_dev(div0, t11);
    			append_dev(div0, t12);
    			append_dev(div0, t13);
    			append_dev(div1, t14);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div1, null);
    				}
    			}

    			append_dev(div1, t15);
    			if (if_block0) if_block0.m(div1, null);
    			append_dev(div1, t16);
    			if (if_block1) if_block1.m(div1, null);
    			insert_dev(target, t17, anchor);
    			insert_dev(target, h4, anchor);
    			insert_dev(target, t19, anchor);
    			mount_component(movingdotstats, target, anchor);
    			insert_dev(target, t20, anchor);
    			insert_dev(target, h1, anchor);
    			insert_dev(target, t22, anchor);
    			insert_dev(target, hr, anchor);
    			insert_dev(target, t23, anchor);
    			mount_component(simplecollapsible, target, anchor);
    			current = true;

    			if (!mounted) {
    				dispose = [
    					listen_dev(select, "change", /*select_change_handler*/ ctx[22]),
    					listen_dev(select, "change", /*changeTheme*/ ctx[16], false, false, false, false),
    					listen_dev(button0, "click", /*loadexperimentaltheme*/ ctx[17], false, false, false, false),
    					listen_dev(button1, "click", /*loadexperimentalthemefromgraphtoJSON*/ ctx[18], false, false, false, false),
    					listen_dev(canvas_1, "click", /*handleSpaceClick*/ ctx[19], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*themeKeys*/ 32768) {
    				each_value_1 = /*themeKeys*/ ctx[15];
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$7(ctx, each_value_1, i);

    					if (each_blocks_1[i]) {
    						each_blocks_1[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_1[i] = create_each_block_1$7(child_ctx);
    						each_blocks_1[i].c();
    						each_blocks_1[i].m(select, null);
    					}
    				}

    				for (; i < each_blocks_1.length; i += 1) {
    					each_blocks_1[i].d(1);
    				}

    				each_blocks_1.length = each_value_1.length;
    			}

    			if (dirty[0] & /*currentTheme, themeKeys*/ 33792) {
    				select_option(select, /*currentTheme*/ ctx[10]);
    			}

    			const dotgamethememanager_changes = {};
    			if (dirty[0] & /*ChangedContentPlaceholdertoSend*/ 2) dotgamethememanager_changes.ChangedContentPlaceholder = /*ChangedContentPlaceholdertoSend*/ ctx[1];
    			dotgamethememanager.$set(dotgamethememanager_changes);
    			const movingdot_changes = {};
    			if (dirty[0] & /*$dotPosition*/ 1) movingdot_changes.position = /*$dotPosition*/ ctx[0];
    			movingdot.$set(movingdot_changes);
    			if ((!current || dirty[0] & /*$dotPosition*/ 1) && t10_value !== (t10_value = /*$dotPosition*/ ctx[0].x + "")) set_data_dev(t10, t10_value);
    			if ((!current || dirty[0] & /*$dotPosition*/ 1) && t12_value !== (t12_value = /*$dotPosition*/ ctx[0].y + "")) set_data_dev(t12, t12_value);

    			if (dirty[0] & /*$targets*/ 4096) {
    				each_value = /*$targets*/ ctx[12];
    				validate_each_argument(each_value);
    				group_outros();
    				validate_each_keys(ctx, each_value, get_each_context$c, get_key);
    				each_blocks = update_keyed_each(each_blocks, dirty, get_key, 1, ctx, each_value, each1_lookup, div1, outro_and_destroy_block, create_each_block$c, t15, get_each_context$c);
    				check_outros();
    			}

    			if (/*isModalOpen*/ ctx[3]) {
    				if (if_block0) {
    					if_block0.p(ctx, dirty);

    					if (dirty[0] & /*isModalOpen*/ 8) {
    						transition_in(if_block0, 1);
    					}
    				} else {
    					if_block0 = create_if_block_1$3(ctx);
    					if_block0.c();
    					transition_in(if_block0, 1);
    					if_block0.m(div1, t16);
    				}
    			} else if (if_block0) {
    				group_outros();

    				transition_out(if_block0, 1, 1, () => {
    					if_block0 = null;
    				});

    				check_outros();
    			}

    			if (/*isSMModalOpen*/ ctx[4]) {
    				if (if_block1) {
    					if_block1.p(ctx, dirty);

    					if (dirty[0] & /*isSMModalOpen*/ 16) {
    						transition_in(if_block1, 1);
    					}
    				} else {
    					if_block1 = create_if_block$7(ctx);
    					if_block1.c();
    					transition_in(if_block1, 1);
    					if_block1.m(div1, null);
    				}
    			} else if (if_block1) {
    				group_outros();

    				transition_out(if_block1, 1, 1, () => {
    					if_block1 = null;
    				});

    				check_outros();
    			}

    			if (!current || dirty[0] & /*CurrentGameBackground*/ 2048) {
    				set_style(div1, "background-image", "url('" + /*CurrentGameBackground*/ ctx[11] + "')");
    			}

    			const simplecollapsible_changes = {};

    			if (dirty[1] & /*$$scope*/ 64) {
    				simplecollapsible_changes.$$scope = { dirty, ctx };
    			}

    			simplecollapsible.$set(simplecollapsible_changes);
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(dotgamethememanager.$$.fragment, local);
    			transition_in(movingdot.$$.fragment, local);

    			for (let i = 0; i < each_value.length; i += 1) {
    				transition_in(each_blocks[i]);
    			}

    			transition_in(if_block0);
    			transition_in(if_block1);
    			transition_in(movingdotstats.$$.fragment, local);
    			transition_in(simplecollapsible.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(dotgamethememanager.$$.fragment, local);
    			transition_out(movingdot.$$.fragment, local);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				transition_out(each_blocks[i]);
    			}

    			transition_out(if_block0);
    			transition_out(if_block1);
    			transition_out(movingdotstats.$$.fragment, local);
    			transition_out(simplecollapsible.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(t0);
    			if (detaching) detach_dev(select);
    			destroy_each(each_blocks_1, detaching);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(button0);
    			if (detaching) detach_dev(t3);
    			if (detaching) detach_dev(button1);
    			if (detaching) detach_dev(t5);
    			destroy_component(dotgamethememanager, detaching);
    			if (detaching) detach_dev(t6);
    			if (detaching) detach_dev(div1);
    			/*canvas_1_binding*/ ctx[23](null);
    			/*movingdot_binding*/ ctx[24](null);
    			destroy_component(movingdot);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].d();
    			}

    			if (if_block0) if_block0.d();
    			if (if_block1) if_block1.d();
    			if (detaching) detach_dev(t17);
    			if (detaching) detach_dev(h4);
    			if (detaching) detach_dev(t19);
    			destroy_component(movingdotstats, detaching);
    			if (detaching) detach_dev(t20);
    			if (detaching) detach_dev(h1);
    			if (detaching) detach_dev(t22);
    			if (detaching) detach_dev(hr);
    			if (detaching) detach_dev(t23);
    			destroy_component(simplecollapsible, detaching);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$f.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$f($$self, $$props, $$invalidate) {
    	let $dotPosition;
    	let $targets;
    	let $autogenconfigtestsmmdoalfromgraph;
    	let $autogenconfigtest;
    	validate_store(targets, 'targets');
    	component_subscribe($$self, targets, $$value => $$invalidate(12, $targets = $$value));
    	validate_store(autogenconfigtestsmmdoalfromgraph, 'autogenconfigtestsmmdoalfromgraph');
    	component_subscribe($$self, autogenconfigtestsmmdoalfromgraph, $$value => $$invalidate(27, $autogenconfigtestsmmdoalfromgraph = $$value));
    	validate_store(autogenconfigtest, 'autogenconfigtest');
    	component_subscribe($$self, autogenconfigtest, $$value => $$invalidate(28, $autogenconfigtest = $$value));
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('MovingDotSpacePortfromReact', slots, []);
    	let ChangedContentPlaceholdertoSend = "No changes";
    	let canvas;
    	let dotPosition = writable({ x: 900, y: 450 });
    	validate_store(dotPosition, 'dotPosition');
    	component_subscribe($$self, dotPosition, value => $$invalidate(0, $dotPosition = value));
    	let boundaries = { maxX: 1835, maxY: 890, minX: 0, minY: 0 };
    	let isModalOpen = false;
    	let isSMModalOpen = false;
    	let currentcollisiontitletext;
    	let currentcollisiontext;
    	let currentcollisionitems = [];
    	let movingDotElement;
    	let currentstatemodalstates;
    	let currentTheme = 'Default'; // default theme
    	let currentThemeStage = 0;
    	let themeKeys = Object.keys(themes);
    	let CurrentGameBackground = themes[currentTheme].background; //GameBackgrounds[0].url;
    	inventory.set(themes[currentTheme].inventory);
    	skills.set(themes[currentTheme].skills);
    	objectives.set(themes[currentTheme].story[0].objectives);

    	targets.set([
    		...themes[currentTheme].persistentTargets,
    		...themes[currentTheme].story[0].targets
    	]);

    	themeactions.set(themes[currentTheme].actions);

    	//$: console.log($themeactions)    
    	// objectives.set(themes[currentTheme].objectives);
    	// targets.set(themes[currentTheme].storyparttargets[0])
    	// function changeTheme(event) {
    	//     currentTheme = event.target.value;
    	//     const theme = themes[currentTheme];
    	//     inventory.set(theme.inventory);
    	//     skills.set(theme.skills);
    	//     objectives.set(theme.objectives);
    	//     currentThemeStage = 0; // Resetting currentThemeStage to 0
    	//     targets.set(theme.storyparttargets[0]);
    	//     CurrentGameBackground = theme.background
    	//     ChangedContentPlaceholdertoSend = "TODO is all other variables to change"
    	// }
    	function changeTheme(event) {
    		$$invalidate(10, currentTheme = event.target.value);
    		console.log(currentTheme);
    		const theme = themes[currentTheme];
    		console.log(theme);
    		inventory.set(theme.inventory);
    		skills.set(theme.skills);
    		themeactions.set(themes.actions);
    		currentThemeStage = 0;
    		const initialStory = theme.story.find(part => part.part === 0);

    		if (initialStory) {
    			objectives.set(initialStory.objectives);

    			const uniqueTargets = [
    				...theme.persistentTargets,
    				...initialStory.targets.filter(target => !theme.persistentTargets.some(persistentTarget => persistentTarget.name === target.name))
    			];

    			targets.set(uniqueTargets);
    		} else {
    			// Handle the case when no initial story part is found
    			objectives.set([]);

    			targets.set([...theme.persistentTargets]);
    		}

    		$$invalidate(11, CurrentGameBackground = theme.background);
    		$$invalidate(1, ChangedContentPlaceholdertoSend = "TODO is all other variables to change");
    	}

    	function loadexperimentaltheme() {
    		if ($autogenconfigtest.story) {
    			inventory.set($autogenconfigtest.inventory);
    			skills.set($autogenconfigtest.skills);
    			themeactions.set($autogenconfigtest.actions);
    			currentThemeStage = 0;
    			const initialStory = $autogenconfigtest.story.find(part => part.part === 0);

    			if (initialStory) {
    				objectives.set(initialStory.objectives);

    				const uniqueTargets = [
    					...$autogenconfigtest.persistentTargets,
    					...initialStory.targets.filter(target => !$autogenconfigtest.persistentTargets.some(persistentTarget => persistentTarget.name === target.name))
    				];

    				targets.set(uniqueTargets);
    			} else {
    				// Handle the case when no initial story part is found
    				objectives.set([]);

    				targets.set([...$autogenconfigtest.persistentTargets]);
    			}

    			$$invalidate(11, CurrentGameBackground = $autogenconfigtest.background);
    			$$invalidate(1, ChangedContentPlaceholdertoSend = "TODO is all other variables to change");
    		} else {
    			alert("Merge not performed");
    		}
    	}

    	function loadexperimentalthemefromgraphtoJSON() {
    		if ($autogenconfigtestsmmdoalfromgraph.story) {
    			inventory.set($autogenconfigtestsmmdoalfromgraph.inventory);
    			skills.set($autogenconfigtestsmmdoalfromgraph.skills);
    			themeactions.set($autogenconfigtestsmmdoalfromgraph.actions);
    			currentThemeStage = 0;
    			const initialStory = $autogenconfigtestsmmdoalfromgraph.story.find(part => part.part === 0);

    			if (initialStory) {
    				objectives.set(initialStory.objectives);

    				const uniqueTargets = [
    					...$autogenconfigtestsmmdoalfromgraph.persistentTargets,
    					...initialStory.targets.filter(target => !$autogenconfigtestsmmdoalfromgraph.persistentTargets.some(persistentTarget => persistentTarget.name === target.name))
    				];

    				targets.set(uniqueTargets);
    			} else {
    				// Handle the case when no initial story part is found
    				objectives.set([]);

    				targets.set([...$autogenconfigtestsmmdoalfromgraph.persistentTargets]);
    			}

    			$$invalidate(11, CurrentGameBackground = $autogenconfigtestsmmdoalfromgraph.background);
    			$$invalidate(1, ChangedContentPlaceholdertoSend = "TODO is all other variables to change");
    		} else {
    			alert("Merge not performed");
    		}
    	}

    	function handleSpaceClick() {
    		//console.log('Container clicked!', event);
    		movingDotElement.focusDot();
    	}

    	function handleModalClose() {
    		$$invalidate(3, isModalOpen = false);
    		$$invalidate(4, isSMModalOpen = false);
    		movingDotElement.focusDot();
    	}

    	function updateDotPosition(newX, newY) {
    		dotPosition.set({ x: newX, y: newY });
    	}

    	// Collision check function
    	const checkCollision = dotPos => {
    		$targets.forEach(target => {
    			if (dotPos.x < target.x + 10 && dotPos.x + 10 > target.x && dotPos.y < target.y + 10 && dotPos.y + 10 > target.y) {
    				handleCollision(target);
    			}
    		});
    	};

    	// Handle collision based on the target object
    	const handleCollision = target => {
    		if (target.subtargets) {
    			alert("Subtargets found. Can be used as discovered locations or just splitting one target into a self contained set of targets. (variable logged in console)");
    			console.log(target.subtargets);
    		} //eventually use to temporarily act as the all targets in the map which can each all have smmodals

    		switch (target.collisionType) {
    			case "":
    				console.log("Nothing Happenedddd");
    				break;
    			case "alert":
    				alert(target.collisiontext);
    				break;
    			case "decision":
    				if (confirm(target.collisiontext)) {
    					alert("You said yes");
    				} else {
    					alert("You said no");
    				}
    				break;
    			case "modal":
    				$$invalidate(3, isModalOpen = true);
    				$$invalidate(5, currentcollisiontitletext = target.modalConfig.title);
    				$$invalidate(6, currentcollisiontext = target.modalConfig.content);
    				$$invalidate(7, currentcollisionitems = target.modalConfig.actions);
    				break;
    			case "smmodal":
    				$$invalidate(4, isSMModalOpen = true);
    				console.log('smmodal');
    				console.log(target.modalStates);
    				$$invalidate(9, currentstatemodalstates = target.modalStates);
    				//currentcollisiontitletext = target.modalConfig.title;
    				//currentcollisiontext = target.modalConfig.content;
    				//currentcollisionitems = target.modalConfig.actions;
    				break;
    			case "storypartchange":
    				currentThemeStage = target.transitionToPart;
    				const newStoryPart = themes[currentTheme].story.find(part => part.part === currentThemeStage);
    				if (newStoryPart) {
    					objectives.set(newStoryPart.objectives);
    					targets.set([...themes[currentTheme].persistentTargets, ...newStoryPart.targets]);
    				}
    				// currentThemeStage = target.newStage;
    				// targets.set(themes[currentTheme].storyparttargets[currentThemeStage])
    				break;
    			case "requirementsgated":
    				const currentObjectives = themes[currentTheme].story[currentThemeStage].objectives;
    				const allObjectivesCompleted = currentObjectives.every(objective => objective.complete);
    				if (allObjectivesCompleted && target.requirements > 5) {
    					//if (target.requirements > 5){
    					alert(target.collisiontext);
    				} else {
    					alert("You have not journeyed enough to explore this area yet (Stats required: and an inventory item)");
    				}
    				break;
    		} // Handle other permanent UI elements here
    	}; // ...
    	//ChatGPT Suggested Options
    	// Change the background color of the canvas or a specific element.
    	// case "changeBackgroundColor":

    	const writable_props = [];

    	Object_1$2.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$8.warn(`<MovingDotSpacePortfromReact> was created with unknown prop '${key}'`);
    	});

    	function select_change_handler() {
    		currentTheme = select_value(this);
    		$$invalidate(10, currentTheme);
    		$$invalidate(15, themeKeys);
    	}

    	function canvas_1_binding($$value) {
    		binding_callbacks[$$value ? 'unshift' : 'push'](() => {
    			canvas = $$value;
    			$$invalidate(2, canvas);
    		});
    	}

    	function movingdot_binding($$value) {
    		binding_callbacks[$$value ? 'unshift' : 'push'](() => {
    			movingDotElement = $$value;
    			$$invalidate(8, movingDotElement);
    		});
    	}

    	const move_handler = e => updateDotPosition(e.detail.x, e.detail.y);

    	$$self.$capture_state = () => ({
    		onMount,
    		writable,
    		MovingDot: MovingDotPortfromReact,
    		Target: MovingDotTargetPortfromReact,
    		Modal: MovingDotSpaceSimpleModal,
    		SMModal: SimpleStateMachineModal,
    		MovingDotStats: MovingDotStatDisplay,
    		DotGameThemeManager: MovingDotSpaceThemeManager,
    		FightTest: MovingDotSpaceGameFight,
    		FightasAllTest: MovingDotSpaceGameFightMultiTheme,
    		ModalTest: MovingDotSpaceModalBrainstorm,
    		FindTest: MovingDotSpaceGameFind,
    		OrderTest: MovingDotSpaceGameOrder,
    		SimpleCollapsible,
    		themes,
    		inventory,
    		skills,
    		objectives,
    		targets,
    		themeactions,
    		autogenconfigtest,
    		autogenconfigtestsmmdoalfromgraph,
    		ChangedContentPlaceholdertoSend,
    		canvas,
    		dotPosition,
    		boundaries,
    		isModalOpen,
    		isSMModalOpen,
    		currentcollisiontitletext,
    		currentcollisiontext,
    		currentcollisionitems,
    		movingDotElement,
    		currentstatemodalstates,
    		currentTheme,
    		currentThemeStage,
    		themeKeys,
    		CurrentGameBackground,
    		changeTheme,
    		loadexperimentaltheme,
    		loadexperimentalthemefromgraphtoJSON,
    		handleSpaceClick,
    		handleModalClose,
    		updateDotPosition,
    		checkCollision,
    		handleCollision,
    		$dotPosition,
    		$targets,
    		$autogenconfigtestsmmdoalfromgraph,
    		$autogenconfigtest
    	});

    	$$self.$inject_state = $$props => {
    		if ('ChangedContentPlaceholdertoSend' in $$props) $$invalidate(1, ChangedContentPlaceholdertoSend = $$props.ChangedContentPlaceholdertoSend);
    		if ('canvas' in $$props) $$invalidate(2, canvas = $$props.canvas);
    		if ('dotPosition' in $$props) $$invalidate(13, dotPosition = $$props.dotPosition);
    		if ('boundaries' in $$props) $$invalidate(14, boundaries = $$props.boundaries);
    		if ('isModalOpen' in $$props) $$invalidate(3, isModalOpen = $$props.isModalOpen);
    		if ('isSMModalOpen' in $$props) $$invalidate(4, isSMModalOpen = $$props.isSMModalOpen);
    		if ('currentcollisiontitletext' in $$props) $$invalidate(5, currentcollisiontitletext = $$props.currentcollisiontitletext);
    		if ('currentcollisiontext' in $$props) $$invalidate(6, currentcollisiontext = $$props.currentcollisiontext);
    		if ('currentcollisionitems' in $$props) $$invalidate(7, currentcollisionitems = $$props.currentcollisionitems);
    		if ('movingDotElement' in $$props) $$invalidate(8, movingDotElement = $$props.movingDotElement);
    		if ('currentstatemodalstates' in $$props) $$invalidate(9, currentstatemodalstates = $$props.currentstatemodalstates);
    		if ('currentTheme' in $$props) $$invalidate(10, currentTheme = $$props.currentTheme);
    		if ('currentThemeStage' in $$props) currentThemeStage = $$props.currentThemeStage;
    		if ('themeKeys' in $$props) $$invalidate(15, themeKeys = $$props.themeKeys);
    		if ('CurrentGameBackground' in $$props) $$invalidate(11, CurrentGameBackground = $$props.CurrentGameBackground);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	$$self.$$.update = () => {
    		if ($$self.$$.dirty[0] & /*$dotPosition*/ 1) {
    			//     document.body.style.backgroundColor = target.color;
    			//     break;
    			// Play a sound effect. You'll need to pre-load these sounds.
    			// case "playSound":
    			//     new Audio(target.soundUrl).play();
    			//     break;
    			// Redirect the user to a different URL.
    			// case "redirect":
    			//     window.location.href = target.url;
    			//     break;
    			// Increase the size of the dot.
    			// case "enlargeDot":
    			//     dotElement.style.transform = "scale(1.5)";
    			//     break;
    			// Decrease the size of the dot.
    			// case "shrinkDot":
    			//     dotElement.style.transform = "scale(0.5)";
    			//     break;
    			// Apply a rotation to the dot.
    			// case "rotateDot":
    			//     dotElement.style.transform = "rotate(45deg)";
    			//     break;
    			// Toggle the visibility of a specific element on the page.
    			// case "toggleVisibility":
    			//     let elem = document.getElementById(target.elementId);
    			//     elem.style.display = elem.style.display === 'none' ? 'block' : 'none';
    			//     break;
    			// Trigger a CSS animation on a specific element.
    			// case "startAnimation":
    			//     let animElem = document.getElementById(target.elementId);
    			//     animElem.classList.add(target.animationClass);
    			//     break;
    			// Increase a score or counter displayed on the screen.
    			// case "incrementScore":
    			//     score += target.incrementValue;
    			//     updateScoreDisplay(); // Assuming you have a function to update the score display
    			//     break;
    			// Change the color of the dot.
    			// case "changeDotColor":
    			//     dotElement.style.backgroundColor = target.color;
    			//     break;
    			// Reactive statement to check collision whenever dotPosition changes
    			$dotPosition && checkCollision($dotPosition);
    		}
    	};

    	return [
    		$dotPosition,
    		ChangedContentPlaceholdertoSend,
    		canvas,
    		isModalOpen,
    		isSMModalOpen,
    		currentcollisiontitletext,
    		currentcollisiontext,
    		currentcollisionitems,
    		movingDotElement,
    		currentstatemodalstates,
    		currentTheme,
    		CurrentGameBackground,
    		$targets,
    		dotPosition,
    		boundaries,
    		themeKeys,
    		changeTheme,
    		loadexperimentaltheme,
    		loadexperimentalthemefromgraphtoJSON,
    		handleSpaceClick,
    		handleModalClose,
    		updateDotPosition,
    		select_change_handler,
    		canvas_1_binding,
    		movingdot_binding,
    		move_handler
    	];
    }

    class MovingDotSpacePortfromReact extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$f, create_fragment$f, safe_not_equal, {}, null, [-1, -1]);

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "MovingDotSpacePortfromReact",
    			options,
    			id: create_fragment$f.name
    		});
    	}
    }

    /* src\YoutubeIframeAPICustomInterface.svelte generated by Svelte v3.59.2 */

    const { console: console_1$7 } = globals;

    const file$e = "src\\YoutubeIframeAPICustomInterface.svelte";

    function get_each_context$b(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[76] = list[i];
    	child_ctx[78] = i;
    	return child_ctx;
    }

    // (518:8) {#each YTIDitems as item, index}
    function create_each_block$b(ctx) {
    	let button;
    	let t0_value = /*item*/ ctx[76] + "";
    	let t0;
    	let t1;
    	let mounted;
    	let dispose;

    	function click_handler() {
    		return /*click_handler*/ ctx[43](/*index*/ ctx[78]);
    	}

    	const block = {
    		c: function create() {
    			button = element$1("button");
    			t0 = text(t0_value);
    			t1 = space();
    			add_location(button, file$e, 518, 12, 18828);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button, anchor);
    			append_dev(button, t0);
    			append_dev(button, t1);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", click_handler, false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;
    			if (dirty[0] & /*YTIDitems*/ 65536 && t0_value !== (t0_value = /*item*/ ctx[76] + "")) set_data_dev(t0, t0_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$b.name,
    		type: "each",
    		source: "(518:8) {#each YTIDitems as item, index}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$e(ctx) {
    	let h10;
    	let t1;
    	let h20;
    	let t3;
    	let h3;
    	let t4;
    	let b;
    	let t6;
    	let h11;
    	let t7;
    	let t8;
    	let t9;
    	let div1;
    	let label;
    	let br0;
    	let t11;
    	let input0;
    	let t12;
    	let button0;
    	let t14;
    	let button1;
    	let t16;
    	let br1;
    	let t17;
    	let textarea0;
    	let br2;
    	let t18;
    	let div0;
    	let t19;
    	let div2;
    	let input1;
    	let t20;
    	let input2;
    	let t21;
    	let textarea1;
    	let t22;
    	let button2;
    	let t24;
    	let pre;
    	let t25;
    	let t26;
    	let div7;
    	let div3;
    	let t27;
    	let div4;
    	let t28;
    	let t29_value = /*currentTime*/ ctx[4].toFixed(2) + "";
    	let t29;
    	let t30;
    	let t31;
    	let div5;
    	let t32;
    	let t33;
    	let br3;
    	let t34;
    	let t35;
    	let t36;
    	let br4;
    	let t37;
    	let div6;
    	let t38;
    	let t39;
    	let t40;
    	let div8;
    	let t41;
    	let t42;
    	let t43;
    	let br5;
    	let t44;
    	let input3;
    	let t45;
    	let button3;
    	let t47;
    	let t48;
    	let t49;
    	let button4;
    	let t51;
    	let textarea2;
    	let t52;
    	let button5;
    	let t56;
    	let button6;
    	let t60;
    	let t61;
    	let t62;
    	let t63_value = /*timestamps*/ ctx[11].length + "";
    	let t63;
    	let t64;
    	let br6;
    	let t65;
    	let button7;
    	let t67;
    	let button8;
    	let t68;
    	let button8_class_value;
    	let button8_disabled_value;
    	let t69;
    	let button9;
    	let t70;
    	let button9_class_value;
    	let button9_disabled_value;
    	let t71;
    	let button10;
    	let t72;
    	let button10_class_value;
    	let button10_disabled_value;
    	let t73;
    	let t74;
    	let t75;
    	let t76_value = /*userTimestamps*/ ctx[1].length + "";
    	let t76;
    	let t77;
    	let br7;
    	let t78;
    	let t79;
    	let t80;
    	let t81_value = /*r2userTimestamps*/ ctx[12].length + "";
    	let t81;
    	let t82;
    	let br8;
    	let t83;
    	let br9;
    	let t84;
    	let button11;
    	let t86;
    	let button12;
    	let t88;
    	let input4;
    	let t89;
    	let br10;
    	let t90;
    	let input5;
    	let t91;
    	let input6;
    	let t92;
    	let input7;
    	let t93;
    	let input8;
    	let t94;
    	let div9;
    	let h21;
    	let t96;
    	let h22;
    	let t98;
    	let hr;
    	let t99;
    	let div10;
    	let t100;
    	let br11;
    	let mounted;
    	let dispose;
    	let each_value = /*YTIDitems*/ ctx[16];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$b(get_each_context$b(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			h10 = element$1("h1");
    			h10.textContent = "Custom Youtube Player for learning Video and music";
    			t1 = space();
    			h20 = element$1("h2");
    			h20.textContent = "Next Step for social media is to build in education blocks eg. App lets you watch next short uninterrupted if you get answer right, app forces you to see the correction as overlay if you get it wrong";
    			t3 = space();
    			h3 = element$1("h3");
    			t4 = text("End Goal is special subtitles - Nouns Verbs and images of them in sync with video AND ");
    			b = element$1("b");
    			b.textContent = "NB NB NB random repitition of items over video Reading as you watch any video NB NB NB";
    			t6 = space();
    			h11 = element$1("h1");
    			t7 = text("Debug subs = ");
    			t8 = text(/*$ytsubcurrenttext*/ ctx[22]);
    			t9 = space();
    			div1 = element$1("div");
    			label = element$1("label");
    			label.textContent = "Manage Multiple Videos";
    			br0 = element$1("br");
    			t11 = text("\r\n    Import ");
    			input0 = element$1("input");
    			t12 = space();
    			button0 = element$1("button");
    			button0.textContent = "Add Items";
    			t14 = space();
    			button1 = element$1("button");
    			button1.textContent = "Download List as Text File";
    			t16 = space();
    			br1 = element$1("br");
    			t17 = space();
    			textarea0 = element$1("textarea");
    			br2 = element$1("br");
    			t18 = space();
    			div0 = element$1("div");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t19 = space();
    			div2 = element$1("div");
    			input1 = element$1("input");
    			t20 = text("\r\n    Start/Stop Word Update (Dummy Transcript as default)\r\n    ");
    			input2 = element$1("input");
    			t21 = space();
    			textarea1 = element$1("textarea");
    			t22 = space();
    			button2 = element$1("button");
    			button2.textContent = "Convert YT Transcript to JSON Test";
    			t24 = space();
    			pre = element$1("pre");
    			t25 = text(/*jsonOutput*/ ctx[6]);
    			t26 = space();
    			div7 = element$1("div");
    			div3 = element$1("div");
    			t27 = space();
    			div4 = element$1("div");
    			t28 = text("Current Time: ");
    			t29 = text(t29_value);
    			t30 = text(" seconds");
    			t31 = space();
    			div5 = element$1("div");
    			t32 = text(/*line*/ ctx[8]);
    			t33 = space();
    			br3 = element$1("br");
    			t34 = space();
    			t35 = text(/*currentWord*/ ctx[7]);
    			t36 = space();
    			br4 = element$1("br");
    			t37 = space();
    			div6 = element$1("div");
    			t38 = text("Debug subs (Hide = '') = ");
    			t39 = text(/*$ytsubcurrenttext*/ ctx[22]);
    			t40 = space();
    			div8 = element$1("div");
    			t41 = text("Note Taking Section based on auto gen timestamp (currently ");
    			t42 = text(/*interval*/ ctx[23]);
    			t43 = text("s) (caution - all changes saved) --- ");
    			br5 = element$1("br");
    			t44 = space();
    			input3 = element$1("input");
    			t45 = space();
    			button3 = element$1("button");
    			button3.textContent = "create note Segments";
    			t47 = text(" | Current index of Note: ");
    			t48 = text(/*currentIndex*/ ctx[10]);
    			t49 = text(" | ");
    			button4 = element$1("button");
    			button4.textContent = "Save Notes to File";
    			t51 = text("  Overlay notes on screen check box | AI analysis generate button |\r\n    ");
    			textarea2 = element$1("textarea");
    			t52 = space();
    			button5 = element$1("button");
    			button5.textContent = `Previous Auto Timestamp - ${/*interval*/ ctx[23]}s`;
    			t56 = space();
    			button6 = element$1("button");
    			button6.textContent = `Next Auto Timestamp - ${/*interval*/ ctx[23]}s`;
    			t60 = text("\r\nAuto Timestamps: ");
    			t61 = text(/*currentIndex*/ ctx[10]);
    			t62 = text(" / ");
    			t63 = text(t63_value);
    			t64 = space();
    			br6 = element$1("br");
    			t65 = space();
    			button7 = element$1("button");
    			button7.textContent = "Add Timestamp";
    			t67 = space();
    			button8 = element$1("button");
    			t68 = text("Current User Timestamp (incomplete)");
    			t69 = space();
    			button9 = element$1("button");
    			t70 = text("Previous User Timestamp");
    			t71 = space();
    			button10 = element$1("button");
    			t72 = text("Next User Timestamp");
    			t73 = text("\r\nUser Timestamps: ");
    			t74 = text(/*currentuserIndex*/ ctx[0]);
    			t75 = text(" / ");
    			t76 = text(t76_value);
    			t77 = space();
    			br7 = element$1("br");
    			t78 = text(" Round 2 (/n) User Timestamps: ");
    			t79 = text(/*currentuserIndex*/ ctx[0]);
    			t80 = text(" / ");
    			t81 = text(t81_value);
    			t82 = space();
    			br8 = element$1("br");
    			t83 = text("A list of one messes up the logic for the counter in conjuction with the user timestamp button reactivity ");
    			br9 = element$1("br");
    			t84 = space();
    			button11 = element$1("button");
    			button11.textContent = "Export Timestamps";
    			t86 = space();
    			button12 = element$1("button");
    			button12.textContent = "Export Round 2 Timestamps";
    			t88 = text(" Import Timestamps (Incomplete) ");
    			input4 = element$1("input");
    			t89 = space();
    			br10 = element$1("br");
    			t90 = text(" Interval Repeat ");
    			input5 = element$1("input");
    			t91 = text(" ||| Start ");
    			input6 = element$1("input");
    			t92 = text(" End ");
    			input7 = element$1("input");
    			t93 = text(" Reps ");
    			input8 = element$1("input");
    			t94 = space();
    			div9 = element$1("div");
    			h21 = element$1("h2");
    			h21.textContent = "Anticipation Training? -- Verbs in subtitle order known before interval repitition?";
    			t96 = space();
    			h22 = element$1("h2");
    			h22.textContent = "Stateful Video - Reverse Interval Repeat aka parts of the video you know == Autoskip sections";
    			t98 = space();
    			hr = element$1("hr");
    			t99 = space();
    			div10 = element$1("div");
    			t100 = text("Skip Interval Button sections\r\n    ");
    			br11 = element$1("br");
    			add_location(h10, file$e, 504, 0, 17783);
    			add_location(h20, file$e, 505, 0, 17844);
    			add_location(b, file$e, 506, 90, 18144);
    			add_location(h3, file$e, 506, 0, 18054);
    			add_location(h11, file$e, 508, 0, 18246);
    			attr_dev(label, "for", "ytid-input");
    			add_location(label, file$e, 511, 4, 18304);
    			add_location(br0, file$e, 511, 58, 18358);
    			attr_dev(input0, "type", "file");
    			attr_dev(input0, "id", "file-import");
    			add_location(input0, file$e, 512, 11, 18375);
    			add_location(button0, file$e, 513, 4, 18452);
    			add_location(button1, file$e, 514, 4, 18508);
    			add_location(br1, file$e, 514, 76, 18580);
    			attr_dev(textarea0, "id", "ytid-input");
    			attr_dev(textarea0, "rows", "4");
    			set_style(textarea0, "width", "35%");
    			attr_dev(textarea0, "placeholder", "Add multiple Youtube IDs separated by new lines to make buttons");
    			add_location(textarea0, file$e, 515, 4, 18590);
    			add_location(br2, file$e, 515, 171, 18757);
    			add_location(div0, file$e, 516, 4, 18767);
    			add_location(div1, file$e, 510, 0, 18293);
    			attr_dev(input1, "type", "text");
    			add_location(input1, file$e, 527, 4, 18974);
    			attr_dev(input2, "type", "checkbox");
    			add_location(input2, file$e, 529, 4, 19086);
    			attr_dev(textarea1, "placeholder", "Enter transcript here...");
    			add_location(textarea1, file$e, 534, 4, 19409);
    			add_location(button2, file$e, 535, 4, 19499);
    			attr_dev(pre, "class", "transcriptpre svelte-udvqea");
    			add_location(pre, file$e, 536, 4, 19584);
    			add_location(div2, file$e, 526, 0, 18963);
    			attr_dev(div3, "id", "youtube-player");
    			set_style(div3, "height", "90vh");
    			set_style(div3, "width", "90%");
    			add_location(div3, file$e, 540, 4, 19680);
    			set_style(div4, "position", "absolute");
    			set_style(div4, "top", "0%");
    			set_style(div4, "left", "40%");
    			set_style(div4, "color", "white");
    			set_style(div4, "background-color", "rgba(0, 0, 0, 0.5)");
    			add_location(div4, file$e, 541, 4, 19750);
    			add_location(br3, file$e, 545, 15, 20070);
    			add_location(br4, file$e, 546, 22, 20098);
    			set_style(div5, "position", "absolute");
    			set_style(div5, "top", "50%");
    			set_style(div5, "left", "20%");
    			set_style(div5, "color", "white");
    			set_style(div5, "background-color", "rgba(0, 0, 0, 0.5)");
    			set_style(div5, "font-size", "100px");
    			add_location(div5, file$e, 544, 4, 19929);
    			set_style(div6, "position", "absolute");
    			set_style(div6, "top", "25%");
    			set_style(div6, "left", "30%");
    			set_style(div6, "color", "white");
    			set_style(div6, "background-color", "rgba(0, 0, 0, 0.5)");
    			set_style(div6, "font-size", "100px");
    			add_location(div6, file$e, 548, 4, 20120);
    			set_style(div7, "position", "relative");
    			add_location(div7, file$e, 539, 0, 19641);
    			add_location(br5, file$e, 554, 110, 20442);
    			attr_dev(input3, "type", "file");
    			add_location(input3, file$e, 555, 4, 20452);
    			add_location(button3, file$e, 555, 59, 20507);
    			add_location(button4, file$e, 555, 169, 20617);
    			attr_dev(textarea2, "name", "notesubtitles");
    			attr_dev(textarea2, "id", "notestextarea");
    			attr_dev(textarea2, "rows", "2");
    			set_style(textarea2, "width", "100%");
    			add_location(textarea2, file$e, 556, 4, 20759);
    			add_location(div8, file$e, 553, 0, 20325);
    			add_location(button5, file$e, 560, 0, 20986);
    			add_location(button6, file$e, 561, 0, 21079);
    			add_location(br6, file$e, 564, 0, 21221);
    			add_location(button7, file$e, 565, 0, 21227);
    			attr_dev(button8, "class", button8_class_value = "" + (null_to_empty(/*currentindexButtonClass*/ ctx[19]) + " svelte-udvqea"));
    			button8.disabled = button8_disabled_value = /*currentuserIndex*/ ctx[0] <= 0;
    			add_location(button8, file$e, 566, 0, 21287);
    			attr_dev(button9, "class", button9_class_value = "" + (null_to_empty(/*previousindexButtonClass*/ ctx[20]) + " svelte-udvqea"));
    			button9.disabled = button9_disabled_value = /*currentuserIndex*/ ctx[0] <= 0;
    			add_location(button9, file$e, 567, 0, 21442);
    			attr_dev(button10, "class", button10_class_value = "" + (null_to_empty(/*nextindexButtonClass*/ ctx[21]) + " svelte-udvqea"));
    			button10.disabled = button10_disabled_value = /*currentuserIndex*/ ctx[0] >= /*userTimestamps*/ ctx[1].length - 1;
    			add_location(button10, file$e, 568, 0, 21587);
    			add_location(br7, file$e, 571, 0, 21810);
    			add_location(br8, file$e, 571, 82, 21892);
    			add_location(br9, file$e, 571, 192, 22002);
    			add_location(button11, file$e, 572, 0, 22008);
    			add_location(button12, file$e, 572, 63, 22071);
    			attr_dev(input4, "type", "file");
    			attr_dev(input4, "accept", ".json");
    			add_location(input4, file$e, 572, 167, 22175);
    			add_location(br10, file$e, 573, 0, 22240);
    			attr_dev(input5, "type", "checkbox");
    			add_location(input5, file$e, 573, 21, 22261);
    			attr_dev(input6, "type", "number");
    			attr_dev(input6, "class", "numberinput svelte-udvqea");
    			attr_dev(input6, "min", "0");
    			add_location(input6, file$e, 573, 82, 22322);
    			attr_dev(input7, "type", "number");
    			attr_dev(input7, "class", "numberinput svelte-udvqea");
    			attr_dev(input7, "min", "0");
    			add_location(input7, file$e, 573, 162, 22402);
    			attr_dev(input8, "type", "number");
    			attr_dev(input8, "class", "numberinput svelte-udvqea");
    			attr_dev(input8, "min", "0");
    			add_location(input8, file$e, 573, 241, 22481);
    			add_location(h21, file$e, 577, 4, 22594);
    			add_location(h22, file$e, 578, 4, 22692);
    			attr_dev(div9, "class", "imagesubtitle svelte-udvqea");
    			add_location(div9, file$e, 576, 0, 22561);
    			add_location(hr, file$e, 582, 0, 22808);
    			add_location(br11, file$e, 585, 4, 22860);
    			add_location(div10, file$e, 583, 0, 22814);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h10, anchor);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, h20, anchor);
    			insert_dev(target, t3, anchor);
    			insert_dev(target, h3, anchor);
    			append_dev(h3, t4);
    			append_dev(h3, b);
    			insert_dev(target, t6, anchor);
    			insert_dev(target, h11, anchor);
    			append_dev(h11, t7);
    			append_dev(h11, t8);
    			insert_dev(target, t9, anchor);
    			insert_dev(target, div1, anchor);
    			append_dev(div1, label);
    			append_dev(div1, br0);
    			append_dev(div1, t11);
    			append_dev(div1, input0);
    			append_dev(div1, t12);
    			append_dev(div1, button0);
    			append_dev(div1, t14);
    			append_dev(div1, button1);
    			append_dev(div1, t16);
    			append_dev(div1, br1);
    			append_dev(div1, t17);
    			append_dev(div1, textarea0);
    			set_input_value(textarea0, /*YTIDinput*/ ctx[17]);
    			append_dev(div1, br2);
    			append_dev(div1, t18);
    			append_dev(div1, div0);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div0, null);
    				}
    			}

    			insert_dev(target, t19, anchor);
    			insert_dev(target, div2, anchor);
    			append_dev(div2, input1);
    			set_input_value(input1, /*$ytsubcurrentID*/ ctx[3]);
    			append_dev(div2, t20);
    			append_dev(div2, input2);
    			input2.checked = /*isUpdating*/ ctx[9];
    			append_dev(div2, t21);
    			append_dev(div2, textarea1);
    			set_input_value(textarea1, /*transcript*/ ctx[5]);
    			append_dev(div2, t22);
    			append_dev(div2, button2);
    			append_dev(div2, t24);
    			append_dev(div2, pre);
    			append_dev(pre, t25);
    			insert_dev(target, t26, anchor);
    			insert_dev(target, div7, anchor);
    			append_dev(div7, div3);
    			append_dev(div7, t27);
    			append_dev(div7, div4);
    			append_dev(div4, t28);
    			append_dev(div4, t29);
    			append_dev(div4, t30);
    			append_dev(div7, t31);
    			append_dev(div7, div5);
    			append_dev(div5, t32);
    			append_dev(div5, t33);
    			append_dev(div5, br3);
    			append_dev(div5, t34);
    			append_dev(div5, t35);
    			append_dev(div5, t36);
    			append_dev(div5, br4);
    			append_dev(div7, t37);
    			append_dev(div7, div6);
    			append_dev(div6, t38);
    			append_dev(div6, t39);
    			insert_dev(target, t40, anchor);
    			insert_dev(target, div8, anchor);
    			append_dev(div8, t41);
    			append_dev(div8, t42);
    			append_dev(div8, t43);
    			append_dev(div8, br5);
    			append_dev(div8, t44);
    			append_dev(div8, input3);
    			append_dev(div8, t45);
    			append_dev(div8, button3);
    			append_dev(div8, t47);
    			append_dev(div8, t48);
    			append_dev(div8, t49);
    			append_dev(div8, button4);
    			append_dev(div8, t51);
    			append_dev(div8, textarea2);
    			set_input_value(textarea2, /*notesegments*/ ctx[18][/*currentIndex*/ ctx[10]]['notes']);
    			insert_dev(target, t52, anchor);
    			insert_dev(target, button5, anchor);
    			insert_dev(target, t56, anchor);
    			insert_dev(target, button6, anchor);
    			insert_dev(target, t60, anchor);
    			insert_dev(target, t61, anchor);
    			insert_dev(target, t62, anchor);
    			insert_dev(target, t63, anchor);
    			insert_dev(target, t64, anchor);
    			insert_dev(target, br6, anchor);
    			insert_dev(target, t65, anchor);
    			insert_dev(target, button7, anchor);
    			insert_dev(target, t67, anchor);
    			insert_dev(target, button8, anchor);
    			append_dev(button8, t68);
    			insert_dev(target, t69, anchor);
    			insert_dev(target, button9, anchor);
    			append_dev(button9, t70);
    			insert_dev(target, t71, anchor);
    			insert_dev(target, button10, anchor);
    			append_dev(button10, t72);
    			insert_dev(target, t73, anchor);
    			insert_dev(target, t74, anchor);
    			insert_dev(target, t75, anchor);
    			insert_dev(target, t76, anchor);
    			insert_dev(target, t77, anchor);
    			insert_dev(target, br7, anchor);
    			insert_dev(target, t78, anchor);
    			insert_dev(target, t79, anchor);
    			insert_dev(target, t80, anchor);
    			insert_dev(target, t81, anchor);
    			insert_dev(target, t82, anchor);
    			insert_dev(target, br8, anchor);
    			insert_dev(target, t83, anchor);
    			insert_dev(target, br9, anchor);
    			insert_dev(target, t84, anchor);
    			insert_dev(target, button11, anchor);
    			insert_dev(target, t86, anchor);
    			insert_dev(target, button12, anchor);
    			insert_dev(target, t88, anchor);
    			insert_dev(target, input4, anchor);
    			insert_dev(target, t89, anchor);
    			insert_dev(target, br10, anchor);
    			insert_dev(target, t90, anchor);
    			insert_dev(target, input5, anchor);
    			input5.checked = /*isRepeating*/ ctx[2];
    			insert_dev(target, t91, anchor);
    			insert_dev(target, input6, anchor);
    			set_input_value(input6, /*repstartTime*/ ctx[13]);
    			insert_dev(target, t92, anchor);
    			insert_dev(target, input7, anchor);
    			set_input_value(input7, /*rependTime*/ ctx[14]);
    			insert_dev(target, t93, anchor);
    			insert_dev(target, input8, anchor);
    			set_input_value(input8, /*repetitions*/ ctx[15]);
    			insert_dev(target, t94, anchor);
    			insert_dev(target, div9, anchor);
    			append_dev(div9, h21);
    			append_dev(div9, t96);
    			append_dev(div9, h22);
    			insert_dev(target, t98, anchor);
    			insert_dev(target, hr, anchor);
    			insert_dev(target, t99, anchor);
    			insert_dev(target, div10, anchor);
    			append_dev(div10, t100);
    			append_dev(div10, br11);

    			if (!mounted) {
    				dispose = [
    					listen_dev(input0, "change", /*YTIDhandleFileImport*/ ctx[39], false, false, false, false),
    					listen_dev(button0, "click", /*YTIDaddItems*/ ctx[36], false, false, false, false),
    					listen_dev(button1, "click", /*YTIDdownloadList*/ ctx[38], false, false, false, false),
    					listen_dev(textarea0, "input", /*textarea0_input_handler*/ ctx[42]),
    					listen_dev(input1, "input", /*input1_input_handler*/ ctx[44]),
    					listen_dev(input2, "change", /*input2_change_handler*/ ctx[45]),
    					listen_dev(input2, "click", /*toggleUpdate*/ ctx[25], false, false, false, false),
    					listen_dev(textarea1, "input", /*textarea1_input_handler*/ ctx[46]),
    					listen_dev(button2, "click", /*transcriptToJson*/ ctx[35], false, false, false, false),
    					listen_dev(input3, "change", /*loadnotesegmentstofile*/ ctx[41], false, false, false, false),
    					listen_dev(button3, "click", /*createNoteSegments*/ ctx[24], false, false, false, false),
    					listen_dev(button4, "click", /*savenoteSegmentstofile*/ ctx[40], false, false, false, false),
    					listen_dev(textarea2, "input", /*textarea2_input_handler*/ ctx[47]),
    					listen_dev(button5, "click", /*goToPreviousAutoTimestamp*/ ctx[27], false, false, false, false),
    					listen_dev(button6, "click", /*goToNextAutoTimestamp*/ ctx[26], false, false, false, false),
    					listen_dev(button7, "click", /*addUserTimestamp*/ ctx[28], false, false, false, false),
    					listen_dev(button8, "click", /*goToCurrentUserTimestamp*/ ctx[29], false, false, false, false),
    					listen_dev(button9, "click", /*goToPreviousUserTimestamp*/ ctx[31], false, false, false, false),
    					listen_dev(button10, "click", /*goToNextUserTimestamp*/ ctx[30], false, false, false, false),
    					listen_dev(button11, "click", /*exportTimestamps*/ ctx[32], false, false, false, false),
    					listen_dev(button12, "click", /*exportr2Timestamps*/ ctx[33], false, false, false, false),
    					listen_dev(input4, "change", /*importTimestamps*/ ctx[34], false, false, false, false),
    					listen_dev(input5, "change", /*input5_change_handler*/ ctx[48]),
    					listen_dev(input6, "input", /*input6_input_handler*/ ctx[49]),
    					listen_dev(input7, "input", /*input7_input_handler*/ ctx[50]),
    					listen_dev(input8, "input", /*input8_input_handler*/ ctx[51])
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$ytsubcurrenttext*/ 4194304) set_data_dev(t8, /*$ytsubcurrenttext*/ ctx[22]);

    			if (dirty[0] & /*YTIDinput*/ 131072) {
    				set_input_value(textarea0, /*YTIDinput*/ ctx[17]);
    			}

    			if (dirty[0] & /*YTIDitems*/ 65536 | dirty[1] & /*YTIDupdateItem*/ 64) {
    				each_value = /*YTIDitems*/ ctx[16];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$b(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$b(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(div0, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}

    			if (dirty[0] & /*$ytsubcurrentID*/ 8 && input1.value !== /*$ytsubcurrentID*/ ctx[3]) {
    				set_input_value(input1, /*$ytsubcurrentID*/ ctx[3]);
    			}

    			if (dirty[0] & /*isUpdating*/ 512) {
    				input2.checked = /*isUpdating*/ ctx[9];
    			}

    			if (dirty[0] & /*transcript*/ 32) {
    				set_input_value(textarea1, /*transcript*/ ctx[5]);
    			}

    			if (dirty[0] & /*jsonOutput*/ 64) set_data_dev(t25, /*jsonOutput*/ ctx[6]);
    			if (dirty[0] & /*currentTime*/ 16 && t29_value !== (t29_value = /*currentTime*/ ctx[4].toFixed(2) + "")) set_data_dev(t29, t29_value);
    			if (dirty[0] & /*line*/ 256) set_data_dev(t32, /*line*/ ctx[8]);
    			if (dirty[0] & /*currentWord*/ 128) set_data_dev(t35, /*currentWord*/ ctx[7]);
    			if (dirty[0] & /*$ytsubcurrenttext*/ 4194304) set_data_dev(t39, /*$ytsubcurrenttext*/ ctx[22]);
    			if (dirty[0] & /*currentIndex*/ 1024) set_data_dev(t48, /*currentIndex*/ ctx[10]);

    			if (dirty[0] & /*notesegments, currentIndex*/ 263168) {
    				set_input_value(textarea2, /*notesegments*/ ctx[18][/*currentIndex*/ ctx[10]]['notes']);
    			}

    			if (dirty[0] & /*currentIndex*/ 1024) set_data_dev(t61, /*currentIndex*/ ctx[10]);
    			if (dirty[0] & /*timestamps*/ 2048 && t63_value !== (t63_value = /*timestamps*/ ctx[11].length + "")) set_data_dev(t63, t63_value);

    			if (dirty[0] & /*currentindexButtonClass*/ 524288 && button8_class_value !== (button8_class_value = "" + (null_to_empty(/*currentindexButtonClass*/ ctx[19]) + " svelte-udvqea"))) {
    				attr_dev(button8, "class", button8_class_value);
    			}

    			if (dirty[0] & /*currentuserIndex*/ 1 && button8_disabled_value !== (button8_disabled_value = /*currentuserIndex*/ ctx[0] <= 0)) {
    				prop_dev(button8, "disabled", button8_disabled_value);
    			}

    			if (dirty[0] & /*previousindexButtonClass*/ 1048576 && button9_class_value !== (button9_class_value = "" + (null_to_empty(/*previousindexButtonClass*/ ctx[20]) + " svelte-udvqea"))) {
    				attr_dev(button9, "class", button9_class_value);
    			}

    			if (dirty[0] & /*currentuserIndex*/ 1 && button9_disabled_value !== (button9_disabled_value = /*currentuserIndex*/ ctx[0] <= 0)) {
    				prop_dev(button9, "disabled", button9_disabled_value);
    			}

    			if (dirty[0] & /*nextindexButtonClass*/ 2097152 && button10_class_value !== (button10_class_value = "" + (null_to_empty(/*nextindexButtonClass*/ ctx[21]) + " svelte-udvqea"))) {
    				attr_dev(button10, "class", button10_class_value);
    			}

    			if (dirty[0] & /*currentuserIndex, userTimestamps*/ 3 && button10_disabled_value !== (button10_disabled_value = /*currentuserIndex*/ ctx[0] >= /*userTimestamps*/ ctx[1].length - 1)) {
    				prop_dev(button10, "disabled", button10_disabled_value);
    			}

    			if (dirty[0] & /*currentuserIndex*/ 1) set_data_dev(t74, /*currentuserIndex*/ ctx[0]);
    			if (dirty[0] & /*userTimestamps*/ 2 && t76_value !== (t76_value = /*userTimestamps*/ ctx[1].length + "")) set_data_dev(t76, t76_value);
    			if (dirty[0] & /*currentuserIndex*/ 1) set_data_dev(t79, /*currentuserIndex*/ ctx[0]);
    			if (dirty[0] & /*r2userTimestamps*/ 4096 && t81_value !== (t81_value = /*r2userTimestamps*/ ctx[12].length + "")) set_data_dev(t81, t81_value);

    			if (dirty[0] & /*isRepeating*/ 4) {
    				input5.checked = /*isRepeating*/ ctx[2];
    			}

    			if (dirty[0] & /*repstartTime*/ 8192 && to_number(input6.value) !== /*repstartTime*/ ctx[13]) {
    				set_input_value(input6, /*repstartTime*/ ctx[13]);
    			}

    			if (dirty[0] & /*rependTime*/ 16384 && to_number(input7.value) !== /*rependTime*/ ctx[14]) {
    				set_input_value(input7, /*rependTime*/ ctx[14]);
    			}

    			if (dirty[0] & /*repetitions*/ 32768 && to_number(input8.value) !== /*repetitions*/ ctx[15]) {
    				set_input_value(input8, /*repetitions*/ ctx[15]);
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h10);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(h20);
    			if (detaching) detach_dev(t3);
    			if (detaching) detach_dev(h3);
    			if (detaching) detach_dev(t6);
    			if (detaching) detach_dev(h11);
    			if (detaching) detach_dev(t9);
    			if (detaching) detach_dev(div1);
    			destroy_each(each_blocks, detaching);
    			if (detaching) detach_dev(t19);
    			if (detaching) detach_dev(div2);
    			if (detaching) detach_dev(t26);
    			if (detaching) detach_dev(div7);
    			if (detaching) detach_dev(t40);
    			if (detaching) detach_dev(div8);
    			if (detaching) detach_dev(t52);
    			if (detaching) detach_dev(button5);
    			if (detaching) detach_dev(t56);
    			if (detaching) detach_dev(button6);
    			if (detaching) detach_dev(t60);
    			if (detaching) detach_dev(t61);
    			if (detaching) detach_dev(t62);
    			if (detaching) detach_dev(t63);
    			if (detaching) detach_dev(t64);
    			if (detaching) detach_dev(br6);
    			if (detaching) detach_dev(t65);
    			if (detaching) detach_dev(button7);
    			if (detaching) detach_dev(t67);
    			if (detaching) detach_dev(button8);
    			if (detaching) detach_dev(t69);
    			if (detaching) detach_dev(button9);
    			if (detaching) detach_dev(t71);
    			if (detaching) detach_dev(button10);
    			if (detaching) detach_dev(t73);
    			if (detaching) detach_dev(t74);
    			if (detaching) detach_dev(t75);
    			if (detaching) detach_dev(t76);
    			if (detaching) detach_dev(t77);
    			if (detaching) detach_dev(br7);
    			if (detaching) detach_dev(t78);
    			if (detaching) detach_dev(t79);
    			if (detaching) detach_dev(t80);
    			if (detaching) detach_dev(t81);
    			if (detaching) detach_dev(t82);
    			if (detaching) detach_dev(br8);
    			if (detaching) detach_dev(t83);
    			if (detaching) detach_dev(br9);
    			if (detaching) detach_dev(t84);
    			if (detaching) detach_dev(button11);
    			if (detaching) detach_dev(t86);
    			if (detaching) detach_dev(button12);
    			if (detaching) detach_dev(t88);
    			if (detaching) detach_dev(input4);
    			if (detaching) detach_dev(t89);
    			if (detaching) detach_dev(br10);
    			if (detaching) detach_dev(t90);
    			if (detaching) detach_dev(input5);
    			if (detaching) detach_dev(t91);
    			if (detaching) detach_dev(input6);
    			if (detaching) detach_dev(t92);
    			if (detaching) detach_dev(input7);
    			if (detaching) detach_dev(t93);
    			if (detaching) detach_dev(input8);
    			if (detaching) detach_dev(t94);
    			if (detaching) detach_dev(div9);
    			if (detaching) detach_dev(t98);
    			if (detaching) detach_dev(hr);
    			if (detaching) detach_dev(t99);
    			if (detaching) detach_dev(div10);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$e.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function getRandomWord(line) {
    	let words = line.split(" ");
    	return words[Math.floor(Math.random() * words.length)];
    }

    function instance$e($$self, $$props, $$invalidate) {
    	let nextindexButtonClass;
    	let previousindexButtonClass;
    	let currentindexButtonClass;
    	let $ytsubcurrentID;
    	let $ytsubcurrenttext;
    	validate_store(ytsubcurrentID, 'ytsubcurrentID');
    	component_subscribe($$self, ytsubcurrentID, $$value => $$invalidate(3, $ytsubcurrentID = $$value));
    	validate_store(ytsubcurrenttext, 'ytsubcurrenttext');
    	component_subscribe($$self, ytsubcurrenttext, $$value => $$invalidate(22, $ytsubcurrenttext = $$value));
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('YoutubeIframeAPICustomInterface', slots, []);
    	let player;
    	let interval = 20; // Define your interval
    	let currentTime = 0;
    	let timeUpdateInterval;

    	// Assuming 'transcript' contains your video transcript
    	let transcript = `Line 1 of the transcript.
    Line 2 of the transcript.
    Line 3 food
    Line 4 foodest
    Line 5 foods
    Line 6 fooder
    Line 7 foodz
    Line 8 fooding
    ...`; // Replace with your actual transcript

    	let jsonOutput = '';
    	let lines = transcript.split("\n");
    	let currentWord = "";
    	let line = "";
    	let isUpdating = false;
    	let updateInterval;
    	let currentIndex = 0; // Assuming this is initialized appropriately
    	let currentuserIndex = 0; // Assuming this is initialized appropriately
    	let timestamps = []; // Array of timestamps
    	let userTimestamps = []; // Array of user timestamps
    	let r2userTimestamps = []; // Array of user timestamps

    	//let currentvideoId = 'IVJkOHTBPn0';
    	let youTubeApiLoaded = false;

    	let currentvideoduration;
    	let regeneratedautotimestamps = false;
    	let repstartTime = 10;
    	let rependTime = 20;
    	let repetitions = 20;
    	let intervalId;
    	let isRepeating = false;
    	let YTIDitems = ['mwO6v4BlgZQ', 'IVJkOHTBPn0'];
    	let YTIDinput = '';
    	let skipIntervals = [];
    	let intervalstartTime = 0;
    	let intervalendTime = 0;

    	let notesegments = [
    		{ start: 0, end: 20, notes: 'Test' },
    		{ start: 21, end: 40, notes: 'For if' },
    		{
    			start: 41,
    			end: 60,
    			notes: 'Correct text loads (Inititalise)'
    		}
    	];

    	window.onYouTubeIframeAPIReady = function () {
    		youTubeApiLoaded = true;
    		initYouTubePlayer();
    	};

    	// Function to initialize the YouTube player
    	function initYouTubePlayer() {
    		if (!youTubeApiLoaded) {
    			console.error("YouTube API is not ready yet.");
    			return;
    		}

    		regeneratedautotimestamps = false;

    		// Clear existing interval
    		clearInterval(timeUpdateInterval);

    		// Reinitialize player with new video ID
    		if (player) {
    			player.loadVideoById($ytsubcurrentID);
    		} else {
    			player = new YT.Player('youtube-player',
    			{
    					height: '360',
    					width: '640',
    					videoId: $ytsubcurrentID,
    					events: {
    						'onReady': onPlayerReady,
    						'onStateChange': onPlayerStateChange
    					}
    				});
    		}

    		// Reset and start the interval to update current time
    		timeUpdateInterval = setInterval(updateCurrentTime, 1000);
    	}

    	onMount(() => {
    		// Load the YouTube IFrame Player API
    		const tag = document.createElement('script');

    		tag.src = "https://www.youtube.com/iframe_api";
    		const firstScriptTag = document.getElementsByTagName('script')[0];
    		firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

    		// Update the current time every second
    		timeUpdateInterval = setInterval(updateCurrentTime, 1000);
    	});

    	function autogeneratedtimestamps() {
    		currentvideoduration = player.getDuration();

    		//console.log("Video Duration: ", currentvideoduration);
    		const generatedTimestamps = [];

    		for (let i = interval; i < currentvideoduration; i += interval) {
    			generatedTimestamps.push(i);
    		}

    		$$invalidate(11, timestamps = generatedTimestamps);

    		// Do something with the timestamps
    		//console.log("Generated Timestamps: ", generatedTimestamps);
    		regeneratedautotimestamps = true;
    	}

    	function createNoteSegments() {
    		// console.log("Video duration: " + currentvideoduration);
    		// console.log("Timestamps: " + timestamps);
    		$$invalidate(18, notesegments = []); // Clear existing segments

    		let start = 0;

    		timestamps.forEach((end, index) => {
    			if (index === 0) {
    				notesegments.push({ start: 0, end, notes: "" });
    			} else {
    				start = timestamps[index - 1] + 1;
    				notesegments.push({ start, end, notes: "" });
    			}
    		});

    		// Add a final segment if the last timestamp is less than the video duration
    		if (timestamps[timestamps.length - 1] < currentvideoduration) {
    			notesegments.push({
    				start: timestamps[timestamps.length - 1] + 1,
    				end: currentvideoduration,
    				notes: ""
    			});
    		}
    	}

    	// Event handler for when the player is ready
    	function onPlayerReady(event) {
    		autogeneratedtimestamps();
    		createNoteSegments();
    	}

    	function onPlayerStateChange(event) {
    		if (event.data === YT.PlayerState.PLAYING || event.data === YT.PlayerState.PAUSED) {
    			updateCurrentIndex();
    		}

    		// Check if the video has just started playing
    		if (event.data === YT.PlayerState.PLAYING && !regeneratedautotimestamps) {
    			autogeneratedtimestamps();
    			createNoteSegments();
    		}
    	}

    	function updateCurrentIndex() {
    		const currentTime = player.getCurrentTime();

    		// Find the closest timestamp
    		let closest = timestamps.reduce((prev, curr) => Math.abs(curr - currentTime) < Math.abs(prev - currentTime)
    		? curr
    		: prev);

    		$$invalidate(10, currentIndex = timestamps.indexOf(closest));
    	}

    	function updateCurrentTime() {
    		if (player && player.getCurrentTime) {
    			$$invalidate(4, currentTime = player.getCurrentTime());
    		}
    	}

    	onDestroy(() => {
    		clearInterval(timeUpdateInterval);
    	});

    	function updateWord() {
    		if (isUpdating) {
    			$$invalidate(8, line = lines[Math.floor(Math.random() * lines.length)]);
    			$$invalidate(7, currentWord = getRandomWord(line));
    		}
    	}

    	function toggleUpdate() {
    		lines = transcript.split("\n");
    		$$invalidate(9, isUpdating = !isUpdating);

    		if (isUpdating) {
    			updateWord(); // Immediately update once
    			updateInterval = setInterval(updateWord, 3000); // Update every 3 seconds
    		} else {
    			clearInterval(updateInterval);
    			$$invalidate(8, line = '');
    			$$invalidate(7, currentWord = '');
    		}
    	}

    	function goToNextAutoTimestamp() {
    		if (currentIndex < timestamps.length - 1) {
    			$$invalidate(10, currentIndex += 1);
    			player.seekTo(timestamps[currentIndex], true);
    		}
    	}

    	function goToPreviousAutoTimestamp() {
    		if (currentIndex > 0) {
    			$$invalidate(10, currentIndex -= 1);
    			player.seekTo(timestamps[currentIndex], true);
    		}
    	}

    	function addUserTimestamp() {
    		const currentTime = Math.floor(player.getCurrentTime());
    		$$invalidate(1, userTimestamps = [...userTimestamps, currentTime].sort((a, b) => a - b));
    	}

    	function addr2UserTimestamp() {
    		const currentTime = Math.floor(player.getCurrentTime());
    		$$invalidate(12, r2userTimestamps = [...r2userTimestamps, currentTime].sort((a, b) => a - b));
    	}

    	function goToCurrentUserTimestamp() {
    		if (currentuserIndex === 0 && currentIndex < 0) {
    			player.seekTo(userTimestamps[currentIndex], true);
    		} else if (currentuserIndex < 0) {
    			player.seekTo(userTimestamps[currentuserIndex], true);
    		} else {
    			// Handle the end of the list here
    			console.log("No selected user timestamp.");
    		} // You can also disable the "next" button or loop to the start if needed.
    	}

    	function goToNextUserTimestamp() {
    		if (currentuserIndex < userTimestamps.length - 1) {
    			$$invalidate(0, currentuserIndex += 1);
    			player.seekTo(userTimestamps[currentuserIndex], true);
    		} else {
    			// Handle the end of the list here
    			console.log("Reached the end of user timestamps.");
    		} // You can also disable the "next" button or loop to the start if needed.
    	}

    	function goToPreviousUserTimestamp() {
    		if (currentuserIndex > 0) {
    			$$invalidate(0, currentuserIndex -= 1);
    			player.seekTo(userTimestamps[currentuserIndex], true);
    		} else {
    			// Handle the beginning of the list here
    			console.log("Reached the start of user timestamps.");
    		} // You can also disable the "previous" button or loop to the end if needed.
    	}

    	function exportTimestamps() {
    		const data = JSON.stringify({
    			$ytsubcurrentID,
    			timestamps: userTimestamps
    		});

    		const blob = new Blob([data], { type: 'application/json' });
    		const url = URL.createObjectURL(blob);
    		const a = document.createElement('a');
    		a.style.display = 'none';
    		const filename = `${$ytsubcurrentID}_timestamps.json`;
    		a.href = url;
    		a.download = filename;
    		document.body.appendChild(a);
    		a.click();
    		window.URL.revokeObjectURL(url);
    	}

    	function exportr2Timestamps() {
    		const data = JSON.stringify({
    			$ytsubcurrentID,
    			timestamps: r2userTimestamps
    		});

    		const blob = new Blob([data], { type: 'application/json' });
    		const url = URL.createObjectURL(blob);
    		const a = document.createElement('a');
    		a.style.display = 'none';
    		const filename = `${$ytsubcurrentID}_round2timestamps.json`;
    		a.href = url;
    		a.download = filename;
    		document.body.appendChild(a);
    		a.click();
    		window.URL.revokeObjectURL(url);
    	}

    	function importTimestamps(event) {
    		// Check if the file input is not empty
    		const file = event.target.files[0];

    		if (!event.target.files || event.target.files.length === 0) {
    			alert('No file selected.');
    			return;
    		}

    		// Check if the file is a Blob (File objects inherit from Blob)
    		if (!(file instanceof Blob)) {
    			alert('Selected item is not a file.');
    			return;
    		}

    		const reader = new FileReader();

    		reader.onload = e => {
    			try {
    				const data = JSON.parse(e.target.result);

    				if (!Array.isArray(data.timestamps)) {
    					alert('Invalid file structure: timestamps should be an array.');
    					return;
    				}

    				set_store_value(ytsubcurrentID, $ytsubcurrentID = data.$ytsubcurrentID || '', $ytsubcurrentID);
    				$$invalidate(1, userTimestamps = data.timestamps);
    			} catch(error) {
    				alert('An error occurred while importing timestamps.'); //regeneratedautotimestamps = false; = true
    			}
    		};

    		reader.readAsText(file);
    	}

    	function transcriptToJson() {
    		const lines = transcript.split('\n').filter(line => line.trim() !== '');
    		const result = [];

    		for (let i = 0; i < lines.length; i += 2) {
    			const timestampLine = lines[i];
    			const textLine = lines[i + 1] || ''; // Ensure there's a line for text
    			const timestampParts = timestampLine.split(' ');
    			const timestamp = timestampParts.shift();
    			const timeParts = timestamp.split(':');
    			const seconds = parseInt(timeParts[0], 10) * 60 + parseInt(timeParts[1], 10);
    			result.push({ time: seconds, text: textLine.trim() });
    		}

    		$$invalidate(6, jsonOutput = JSON.stringify(result, null, 2));
    	}

    	function startRepetition() {
    		let count = 0;
    		player.seekTo(repstartTime, true);
    		player.playVideo();

    		intervalId = setInterval(
    			() => {
    				if (count < repetitions) {
    					player.seekTo(repstartTime, true);
    					count++;
    				} else {
    					stopRepetition();
    				}
    			},
    			(rependTime - repstartTime) * 1000
    		);
    	}

    	function stopRepetition() {
    		clearInterval(intervalId);
    	} //player.pauseVideo();

    	// Function to handle button click for adding items
    	function YTIDaddItems() {
    		const newItems = YTIDinput.split('\n').filter(item => item.trim() !== '');
    		YTIDitems.push(...newItems);
    		$$invalidate(17, YTIDinput = ''); // Clear textarea after adding
    		$$invalidate(16, YTIDitems = YTIDitems.slice());
    	}

    	function YTIDupdateItem(index) {
    		$$invalidate(16, YTIDitems[index] = `${YTIDitems[index]}`, YTIDitems); //(updated)`;
    		set_store_value(ytsubcurrentID, $ytsubcurrentID = YTIDitems[index], $ytsubcurrentID);
    		$$invalidate(16, YTIDitems = YTIDitems.slice());
    	}

    	function YTIDdownloadList() {
    		const blob = new Blob([YTIDitems.join('\n')], { type: 'text/plain' });
    		const url = URL.createObjectURL(blob);
    		const a = document.createElement('a');
    		a.href = url;
    		a.download = 'YTIDlist.txt'; // Name of the file to be downloaded
    		document.body.appendChild(a);
    		a.click();
    		document.body.removeChild(a);
    		URL.revokeObjectURL(url);
    	}

    	function YTIDhandleFileImport(event) {
    		const file = event.target.files[0];

    		if (file) {
    			const reader = new FileReader();

    			reader.onload = e => {
    				const fileContents = e.target.result;
    				$$invalidate(16, YTIDitems = fileContents.split('\n').filter(line => line.trim() !== ''));
    			};

    			reader.readAsText(file);
    		}
    	}

    	function checkSkipIntervals() {
    		const currentTime = player.getCurrentTime();

    		for (const interval of skipIntervals) {
    			if (currentTime >= interval.start && currentTime < interval.end) {
    				player.seekTo(interval.end);
    				break;
    			}
    		}
    	}

    	function addSkipInterval() {
    		skipIntervals.push({
    			start: intervalstartTime,
    			end: intervalendTime
    		});

    		skipIntervals = skipIntervals;
    		intervalstartTime = 0;
    		intervalendTime = 0;
    	}

    	function removeSkipInterval(index) {
    		skipIntervals.splice(index, 1);
    		skipIntervals = skipIntervals;
    	}

    	// function createnoteSegments() {
    	//     console.log(currentvideoduration)
    	//     console.log(timestamps)
    	//     notesegments = []; // Clear existing segments
    	//     for (let start = 0; start < currentvideoduration; start += timestamps) {
    	//         let end = start + timestamps - 1;
    	//         if (end > currentvideoduration) end = currentvideoduration; // Adjust last segment to not exceed video duration
    	//         notesegments.push({ start: start, end: end, notes: "" });
    	//     }
    	//     console.log(notesegments)
    	// }
    	// function createNoteSegments() {
    	//     console.log("Video duration: " + currentvideoduration);
    	//     console.log("Timestamps: " + timestamps);
    	//     notesegments = []; // Clear existing segments
    	//     let start = 0;
    	//     timestamps.forEach((end, index) => {
    	//         if (index === 0) {
    	//             notesegments.push({ start: 0, end: end, notes: "" });
    	//         } else {
    	//             start = timestamps[index - 1] + 1;
    	//             notesegments.push({ start: start, end: end, notes: "" });
    	//         }
    	//     });
    	//     // Add a final segment if the last timestamp is less than the video duration
    	//     if (timestamps[timestamps.length - 1] < currentvideoduration) {
    	//         notesegments.push({
    	//             start: timestamps[timestamps.length - 1] + 1,
    	//             end: currentvideoduration,
    	//             notes: ""
    	//         });
    	//     }
    	//     console.log(notesegments);
    	// }
    	function savenoteSegmentstofile() {
    		const dataStr = JSON.stringify(notesegments);
    		const blob = new Blob([dataStr], { type: "application/json" });

    		// Getting current date and time for filename
    		const now = new Date();

    		const dateTimeStamp = `${now.getFullYear()}-${(now.getMonth() + 1).toString().padStart(2, '0')}-${now.getDate().toString().padStart(2, '0')}_${now.getHours().toString().padStart(2, '0')}-${now.getMinutes().toString().padStart(2, '0')}-${now.getSeconds().toString().padStart(2, '0')}`;
    		const filename = `noteSegments_${$ytsubcurrentID}_${dateTimeStamp}.json`;
    		const url = URL.createObjectURL(blob);
    		const link = document.createElement('a');
    		link.href = url;
    		link.download = filename; //"notesegments.json";
    		document.body.appendChild(link);
    		link.click();
    		document.body.removeChild(link);
    		URL.revokeObjectURL(url);
    	}

    	function loadnotesegmentstofile(event) {
    		const file = event.target.files[0];

    		if (file) {
    			const reader = new FileReader();

    			reader.onload = e => {
    				$$invalidate(18, notesegments = JSON.parse(e.target.result));
    				console.log("Notes loaded:", notesegments);
    			};

    			reader.readAsText(file);
    		}
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$7.warn(`<YoutubeIframeAPICustomInterface> was created with unknown prop '${key}'`);
    	});

    	function textarea0_input_handler() {
    		YTIDinput = this.value;
    		$$invalidate(17, YTIDinput);
    	}

    	const click_handler = index => YTIDupdateItem(index);

    	function input1_input_handler() {
    		$ytsubcurrentID = this.value;
    		ytsubcurrentID.set($ytsubcurrentID);
    	}

    	function input2_change_handler() {
    		isUpdating = this.checked;
    		$$invalidate(9, isUpdating);
    	}

    	function textarea1_input_handler() {
    		transcript = this.value;
    		$$invalidate(5, transcript);
    	}

    	function textarea2_input_handler() {
    		notesegments[currentIndex]['notes'] = this.value;
    		$$invalidate(18, notesegments);
    	}

    	function input5_change_handler() {
    		isRepeating = this.checked;
    		$$invalidate(2, isRepeating);
    	}

    	function input6_input_handler() {
    		repstartTime = to_number(this.value);
    		$$invalidate(13, repstartTime);
    	}

    	function input7_input_handler() {
    		rependTime = to_number(this.value);
    		$$invalidate(14, rependTime);
    	}

    	function input8_input_handler() {
    		repetitions = to_number(this.value);
    		$$invalidate(15, repetitions);
    	}

    	$$self.$capture_state = () => ({
    		onMount,
    		onDestroy,
    		ytsubcurrenttext,
    		ytsubcurrentID,
    		ytsubuse,
    		ytsubuseplayer,
    		player,
    		interval,
    		currentTime,
    		timeUpdateInterval,
    		transcript,
    		jsonOutput,
    		lines,
    		currentWord,
    		line,
    		isUpdating,
    		updateInterval,
    		currentIndex,
    		currentuserIndex,
    		timestamps,
    		userTimestamps,
    		r2userTimestamps,
    		youTubeApiLoaded,
    		currentvideoduration,
    		regeneratedautotimestamps,
    		repstartTime,
    		rependTime,
    		repetitions,
    		intervalId,
    		isRepeating,
    		YTIDitems,
    		YTIDinput,
    		skipIntervals,
    		intervalstartTime,
    		intervalendTime,
    		notesegments,
    		initYouTubePlayer,
    		autogeneratedtimestamps,
    		createNoteSegments,
    		onPlayerReady,
    		onPlayerStateChange,
    		updateCurrentIndex,
    		updateCurrentTime,
    		getRandomWord,
    		updateWord,
    		toggleUpdate,
    		goToNextAutoTimestamp,
    		goToPreviousAutoTimestamp,
    		addUserTimestamp,
    		addr2UserTimestamp,
    		goToCurrentUserTimestamp,
    		goToNextUserTimestamp,
    		goToPreviousUserTimestamp,
    		exportTimestamps,
    		exportr2Timestamps,
    		importTimestamps,
    		transcriptToJson,
    		startRepetition,
    		stopRepetition,
    		YTIDaddItems,
    		YTIDupdateItem,
    		YTIDdownloadList,
    		YTIDhandleFileImport,
    		checkSkipIntervals,
    		addSkipInterval,
    		removeSkipInterval,
    		savenoteSegmentstofile,
    		loadnotesegmentstofile,
    		currentindexButtonClass,
    		previousindexButtonClass,
    		nextindexButtonClass,
    		$ytsubcurrentID,
    		$ytsubcurrenttext
    	});

    	$$self.$inject_state = $$props => {
    		if ('player' in $$props) player = $$props.player;
    		if ('interval' in $$props) $$invalidate(23, interval = $$props.interval);
    		if ('currentTime' in $$props) $$invalidate(4, currentTime = $$props.currentTime);
    		if ('timeUpdateInterval' in $$props) timeUpdateInterval = $$props.timeUpdateInterval;
    		if ('transcript' in $$props) $$invalidate(5, transcript = $$props.transcript);
    		if ('jsonOutput' in $$props) $$invalidate(6, jsonOutput = $$props.jsonOutput);
    		if ('lines' in $$props) lines = $$props.lines;
    		if ('currentWord' in $$props) $$invalidate(7, currentWord = $$props.currentWord);
    		if ('line' in $$props) $$invalidate(8, line = $$props.line);
    		if ('isUpdating' in $$props) $$invalidate(9, isUpdating = $$props.isUpdating);
    		if ('updateInterval' in $$props) updateInterval = $$props.updateInterval;
    		if ('currentIndex' in $$props) $$invalidate(10, currentIndex = $$props.currentIndex);
    		if ('currentuserIndex' in $$props) $$invalidate(0, currentuserIndex = $$props.currentuserIndex);
    		if ('timestamps' in $$props) $$invalidate(11, timestamps = $$props.timestamps);
    		if ('userTimestamps' in $$props) $$invalidate(1, userTimestamps = $$props.userTimestamps);
    		if ('r2userTimestamps' in $$props) $$invalidate(12, r2userTimestamps = $$props.r2userTimestamps);
    		if ('youTubeApiLoaded' in $$props) youTubeApiLoaded = $$props.youTubeApiLoaded;
    		if ('currentvideoduration' in $$props) currentvideoduration = $$props.currentvideoduration;
    		if ('regeneratedautotimestamps' in $$props) regeneratedautotimestamps = $$props.regeneratedautotimestamps;
    		if ('repstartTime' in $$props) $$invalidate(13, repstartTime = $$props.repstartTime);
    		if ('rependTime' in $$props) $$invalidate(14, rependTime = $$props.rependTime);
    		if ('repetitions' in $$props) $$invalidate(15, repetitions = $$props.repetitions);
    		if ('intervalId' in $$props) intervalId = $$props.intervalId;
    		if ('isRepeating' in $$props) $$invalidate(2, isRepeating = $$props.isRepeating);
    		if ('YTIDitems' in $$props) $$invalidate(16, YTIDitems = $$props.YTIDitems);
    		if ('YTIDinput' in $$props) $$invalidate(17, YTIDinput = $$props.YTIDinput);
    		if ('skipIntervals' in $$props) skipIntervals = $$props.skipIntervals;
    		if ('intervalstartTime' in $$props) intervalstartTime = $$props.intervalstartTime;
    		if ('intervalendTime' in $$props) intervalendTime = $$props.intervalendTime;
    		if ('notesegments' in $$props) $$invalidate(18, notesegments = $$props.notesegments);
    		if ('currentindexButtonClass' in $$props) $$invalidate(19, currentindexButtonClass = $$props.currentindexButtonClass);
    		if ('previousindexButtonClass' in $$props) $$invalidate(20, previousindexButtonClass = $$props.previousindexButtonClass);
    		if ('nextindexButtonClass' in $$props) $$invalidate(21, nextindexButtonClass = $$props.nextindexButtonClass);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	$$self.$$.update = () => {
    		if ($$self.$$.dirty[0] & /*$ytsubcurrentID*/ 8) {
    			if ($ytsubcurrentID) {
    				initYouTubePlayer();
    			}
    		}

    		if ($$self.$$.dirty[0] & /*currentuserIndex, userTimestamps*/ 3) {
    			$$invalidate(21, nextindexButtonClass = currentuserIndex >= userTimestamps.length - 1
    			? 'button-at-end'
    			: 'button');
    		}

    		if ($$self.$$.dirty[0] & /*currentuserIndex*/ 1) {
    			$$invalidate(20, previousindexButtonClass = currentuserIndex <= 0 ? 'button-at-end' : 'button');
    		}

    		if ($$self.$$.dirty[0] & /*currentuserIndex*/ 1) {
    			$$invalidate(19, currentindexButtonClass = currentuserIndex <= 0 ? 'button-at-end' : 'button');
    		}

    		if ($$self.$$.dirty[0] & /*isRepeating*/ 4) {
    			if (isRepeating) {
    				startRepetition();
    			} else {
    				stopRepetition();
    			}
    		}
    	};

    	return [
    		currentuserIndex,
    		userTimestamps,
    		isRepeating,
    		$ytsubcurrentID,
    		currentTime,
    		transcript,
    		jsonOutput,
    		currentWord,
    		line,
    		isUpdating,
    		currentIndex,
    		timestamps,
    		r2userTimestamps,
    		repstartTime,
    		rependTime,
    		repetitions,
    		YTIDitems,
    		YTIDinput,
    		notesegments,
    		currentindexButtonClass,
    		previousindexButtonClass,
    		nextindexButtonClass,
    		$ytsubcurrenttext,
    		interval,
    		createNoteSegments,
    		toggleUpdate,
    		goToNextAutoTimestamp,
    		goToPreviousAutoTimestamp,
    		addUserTimestamp,
    		goToCurrentUserTimestamp,
    		goToNextUserTimestamp,
    		goToPreviousUserTimestamp,
    		exportTimestamps,
    		exportr2Timestamps,
    		importTimestamps,
    		transcriptToJson,
    		YTIDaddItems,
    		YTIDupdateItem,
    		YTIDdownloadList,
    		YTIDhandleFileImport,
    		savenoteSegmentstofile,
    		loadnotesegmentstofile,
    		textarea0_input_handler,
    		click_handler,
    		input1_input_handler,
    		input2_change_handler,
    		textarea1_input_handler,
    		textarea2_input_handler,
    		input5_change_handler,
    		input6_input_handler,
    		input7_input_handler,
    		input8_input_handler
    	];
    }

    class YoutubeIframeAPICustomInterface extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$e, create_fragment$e, safe_not_equal, {}, null, [-1, -1, -1]);

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "YoutubeIframeAPICustomInterface",
    			options,
    			id: create_fragment$e.name
    		});
    	}
    }

    // Unique ID creation requires a high quality random # generator. In the browser we therefore
    // require the crypto API and do not support built-in fallback to lower quality random number
    // generators (like Math.random()).
    let getRandomValues;
    const rnds8 = new Uint8Array(16);
    function rng() {
      // lazy load so that environments that need to polyfill have a chance to do so
      if (!getRandomValues) {
        // getRandomValues needs to be invoked in a context where "this" is a Crypto implementation.
        getRandomValues = typeof crypto !== 'undefined' && crypto.getRandomValues && crypto.getRandomValues.bind(crypto);

        if (!getRandomValues) {
          throw new Error('crypto.getRandomValues() not supported. See https://github.com/uuidjs/uuid#getrandomvalues-not-supported');
        }
      }

      return getRandomValues(rnds8);
    }

    /**
     * Convert array of 16 byte values to UUID string format of the form:
     * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
     */

    const byteToHex = [];

    for (let i = 0; i < 256; ++i) {
      byteToHex.push((i + 0x100).toString(16).slice(1));
    }

    function unsafeStringify(arr, offset = 0) {
      // Note: Be careful editing this code!  It's been tuned for performance
      // and works in ways you may not expect. See https://github.com/uuidjs/uuid/pull/434
      return byteToHex[arr[offset + 0]] + byteToHex[arr[offset + 1]] + byteToHex[arr[offset + 2]] + byteToHex[arr[offset + 3]] + '-' + byteToHex[arr[offset + 4]] + byteToHex[arr[offset + 5]] + '-' + byteToHex[arr[offset + 6]] + byteToHex[arr[offset + 7]] + '-' + byteToHex[arr[offset + 8]] + byteToHex[arr[offset + 9]] + '-' + byteToHex[arr[offset + 10]] + byteToHex[arr[offset + 11]] + byteToHex[arr[offset + 12]] + byteToHex[arr[offset + 13]] + byteToHex[arr[offset + 14]] + byteToHex[arr[offset + 15]];
    }

    const randomUUID = typeof crypto !== 'undefined' && crypto.randomUUID && crypto.randomUUID.bind(crypto);
    var native = {
      randomUUID
    };

    function v4(options, buf, offset) {
      if (native.randomUUID && !buf && !options) {
        return native.randomUUID();
      }

      options = options || {};
      const rnds = options.random || (options.rng || rng)(); // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`

      rnds[6] = rnds[6] & 0x0f | 0x40;
      rnds[8] = rnds[8] & 0x3f | 0x80; // Copy bytes to buffer, if provided

      if (buf) {
        offset = offset || 0;

        for (let i = 0; i < 16; ++i) {
          buf[offset + i] = rnds[i];
        }

        return buf;
      }

      return unsafeStringify(rnds);
    }

    /* src\RecursiveNestedCommentsElement.svelte generated by Svelte v3.59.2 */

    const { console: console_1$6 } = globals;
    const file$d = "src\\RecursiveNestedCommentsElement.svelte";

    function get_each_context$a(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[15] = list[i];
    	child_ctx[16] = list;
    	child_ctx[17] = i;
    	return child_ctx;
    }

    // (126:16) {#if showReplyInput[comment.id]}
    function create_if_block$6(ctx) {
    	let div;
    	let input;
    	let t0;
    	let button;
    	let mounted;
    	let dispose;

    	function input_input_handler() {
    		/*input_input_handler*/ ctx[12].call(input, /*comment*/ ctx[15]);
    	}

    	function click_handler_1() {
    		return /*click_handler_1*/ ctx[13](/*comment*/ ctx[15]);
    	}

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			input = element$1("input");
    			t0 = space();
    			button = element$1("button");
    			button.textContent = "Post Reply";
    			attr_dev(input, "placeholder", "Write a reply...");
    			add_location(input, file$d, 127, 24, 5188);
    			add_location(button, file$d, 128, 24, 5289);
    			attr_dev(div, "class", "reply-input");
    			add_location(div, file$d, 126, 20, 5137);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, input);
    			set_input_value(input, /*replyText*/ ctx[2][/*comment*/ ctx[15].id]);
    			append_dev(div, t0);
    			append_dev(div, button);

    			if (!mounted) {
    				dispose = [
    					listen_dev(input, "input", input_input_handler),
    					listen_dev(button, "click", click_handler_1, false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;

    			if (dirty & /*replyText, flattenedComments*/ 6 && input.value !== /*replyText*/ ctx[2][/*comment*/ ctx[15].id]) {
    				set_input_value(input, /*replyText*/ ctx[2][/*comment*/ ctx[15].id]);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$6.name,
    		type: "if",
    		source: "(126:16) {#if showReplyInput[comment.id]}",
    		ctx
    	});

    	return block;
    }

    // (122:8) {#each flattenedComments as comment}
    function create_each_block$a(ctx) {
    	let div;
    	let span;
    	let t0_value = /*comment*/ ctx[15].title + "";
    	let t0;
    	let t1;
    	let button;
    	let t3;
    	let t4;
    	let div_class_value;
    	let mounted;
    	let dispose;

    	function click_handler() {
    		return /*click_handler*/ ctx[11](/*comment*/ ctx[15]);
    	}

    	let if_block = /*showReplyInput*/ ctx[3][/*comment*/ ctx[15].id] && create_if_block$6(ctx);

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			span = element$1("span");
    			t0 = text(t0_value);
    			t1 = space();
    			button = element$1("button");
    			button.textContent = "Reply";
    			t3 = space();
    			if (if_block) if_block.c();
    			t4 = space();
    			add_location(span, file$d, 123, 16, 4951);
    			add_location(button, file$d, 124, 16, 4997);

    			attr_dev(div, "class", div_class_value = "" + (null_to_empty(/*comment*/ ctx[15].level === 0
    			? 'top-level-comment'
    			: 'comment') + " svelte-bsj1sx"));

    			set_style(div, "margin-left", /*comment*/ ctx[15].level * 20 + "px");
    			add_location(div, file$d, 122, 12, 4821);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, span);
    			append_dev(span, t0);
    			append_dev(div, t1);
    			append_dev(div, button);
    			append_dev(div, t3);
    			if (if_block) if_block.m(div, null);
    			append_dev(div, t4);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", click_handler, false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;
    			if (dirty & /*flattenedComments*/ 2 && t0_value !== (t0_value = /*comment*/ ctx[15].title + "")) set_data_dev(t0, t0_value);

    			if (/*showReplyInput*/ ctx[3][/*comment*/ ctx[15].id]) {
    				if (if_block) {
    					if_block.p(ctx, dirty);
    				} else {
    					if_block = create_if_block$6(ctx);
    					if_block.c();
    					if_block.m(div, t4);
    				}
    			} else if (if_block) {
    				if_block.d(1);
    				if_block = null;
    			}

    			if (dirty & /*flattenedComments*/ 2 && div_class_value !== (div_class_value = "" + (null_to_empty(/*comment*/ ctx[15].level === 0
    			? 'top-level-comment'
    			: 'comment') + " svelte-bsj1sx"))) {
    				attr_dev(div, "class", div_class_value);
    			}

    			if (dirty & /*flattenedComments*/ 2) {
    				set_style(div, "margin-left", /*comment*/ ctx[15].level * 20 + "px");
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			if (if_block) if_block.d();
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$a.name,
    		type: "each",
    		source: "(122:8) {#each flattenedComments as comment}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$d(ctx) {
    	let h1;
    	let t1;
    	let h4;
    	let t3;
    	let simpleiframe;
    	let t4;
    	let div2;
    	let div0;
    	let button0;
    	let t6;
    	let input0;
    	let t7;
    	let input1;
    	let t8;
    	let button1;
    	let t10;
    	let br;
    	let t11;
    	let div1;
    	let current;
    	let mounted;
    	let dispose;

    	simpleiframe = new SimpleIFrame({
    			props: { webpages: /*LLMforassit*/ ctx[4] },
    			$$inline: true
    		});

    	let each_value = /*flattenedComments*/ ctx[1];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$a(get_each_context$a(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			h1 = element$1("h1");
    			h1.textContent = "Reddit based Nested Comments Idea for LMM responses that need further branching responses";
    			t1 = space();
    			h4 = element$1("h4");
    			h4.textContent = "Inspired by Vijay Bhati - https://github.com/vj98/Frontend-Machine-Coding/tree/main/nested-comments https://youtu.be/a4OA7QbHEho?list=PLBygUld3s6x8sI_H8UYROVMIVcuxUre1e";
    			t3 = text("\r\nLLM: ");
    			create_component(simpleiframe.$$.fragment);
    			t4 = space();
    			div2 = element$1("div");
    			div0 = element$1("div");
    			button0 = element$1("button");
    			button0.textContent = "Export Comments";
    			t6 = text("\r\n        | Import Exported Comments \r\n        ");
    			input0 = element$1("input");
    			t7 = text("\r\n        | \r\n        ");
    			input1 = element$1("input");
    			t8 = space();
    			button1 = element$1("button");
    			button1.textContent = "Post Comment";
    			t10 = space();
    			br = element$1("br");
    			t11 = space();
    			div1 = element$1("div");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(h1, file$d, 106, 0, 3964);
    			add_location(h4, file$d, 107, 0, 4066);
    			add_location(button0, file$d, 111, 8, 4395);
    			attr_dev(input0, "type", "file");
    			add_location(input0, file$d, 113, 8, 4498);
    			attr_dev(input1, "placeholder", "Add a comment...");
    			add_location(input1, file$d, 115, 8, 4570);
    			add_location(button1, file$d, 116, 8, 4644);
    			add_location(div0, file$d, 110, 4, 4380);
    			add_location(br, file$d, 119, 4, 4723);
    			attr_dev(div1, "id", "comment-container");
    			add_location(div1, file$d, 120, 4, 4733);
    			attr_dev(div2, "class", "component-containter svelte-bsj1sx");
    			set_style(div2, "border", "1px solid black");
    			set_style(div2, "padding", "4px");
    			add_location(div2, file$d, 109, 0, 4293);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h1, anchor);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, h4, anchor);
    			insert_dev(target, t3, anchor);
    			mount_component(simpleiframe, target, anchor);
    			insert_dev(target, t4, anchor);
    			insert_dev(target, div2, anchor);
    			append_dev(div2, div0);
    			append_dev(div0, button0);
    			append_dev(div0, t6);
    			append_dev(div0, input0);
    			append_dev(div0, t7);
    			append_dev(div0, input1);
    			set_input_value(input1, /*newComment*/ ctx[0]);
    			append_dev(div0, t8);
    			append_dev(div0, button1);
    			append_dev(div2, t10);
    			append_dev(div2, br);
    			append_dev(div2, t11);
    			append_dev(div2, div1);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div1, null);
    				}
    			}

    			current = true;

    			if (!mounted) {
    				dispose = [
    					listen_dev(button0, "click", /*exportToJson*/ ctx[8], false, false, false, false),
    					listen_dev(input0, "change", /*handleFileUpload*/ ctx[9], false, false, false, false),
    					listen_dev(input1, "input", /*input1_input_handler*/ ctx[10]),
    					listen_dev(button1, "click", /*addComment*/ ctx[5], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*newComment*/ 1 && input1.value !== /*newComment*/ ctx[0]) {
    				set_input_value(input1, /*newComment*/ ctx[0]);
    			}

    			if (dirty & /*flattenedComments, addReply, replyText, toggleReplyInput, showReplyInput*/ 206) {
    				each_value = /*flattenedComments*/ ctx[1];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$a(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$a(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(div1, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(simpleiframe.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(simpleiframe.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h1);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(h4);
    			if (detaching) detach_dev(t3);
    			destroy_component(simpleiframe, detaching);
    			if (detaching) detach_dev(t4);
    			if (detaching) detach_dev(div2);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$d.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function flattenStructure(items, level = 0, parentId = null, processedIds = new Set()) {
    	let result = [];

    	items.forEach(item => {
    		if (processedIds.has(item.id)) return;
    		result.push({ ...item, level, parentId });
    		processedIds.add(item.id);

    		if (item.items && Array.isArray(item.items)) {
    			const childItems = flattenStructure(item.items, level + 1, item.id, processedIds);
    			result = result.concat(childItems);
    		}
    	});

    	return result;
    }

    function instance$d($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('RecursiveNestedCommentsElement', slots, []);

    	let LLMforassit = [
    		{
    			name: 'CohereForAI/c4ai-command-r-plus',
    			url: 'https://cohereforai-c4ai-command-r-plus.hf.space'
    		},
    		{
    			name: 'ysharma/Chat_with_Meta_llama3_8b',
    			url: 'https://ysharma-chat-with-meta-llama3-8b.hf.space'
    		},
    		{
    			name: 'Qwen/Qwen1.5-110B-Chat-demo',
    			url: 'https://qwen-qwen1-5-110b-chat-demo.hf.space'
    		}
    	]; //List of models with system prompt available //{ name: '', url: '' },

    	let comments = [];
    	let newComment = '';
    	let flattenedComments = [];
    	let replyText = {};
    	let showReplyInput = {};

    	const addComment = () => {
    		comments = [
    			...comments,
    			{
    				id: v4(),
    				title: newComment,
    				items: []
    			}
    		];

    		$$invalidate(0, newComment = '');
    		$$invalidate(1, flattenedComments = flattenStructure(comments));
    	};

    	const addReply = (parentId, replyText) => {
    		const findAndAddReply = (items, id) => {
    			for (let item of items) {
    				if (item.id === id) {
    					item.items.push({
    						id: v4(),
    						title: replyText,
    						items: []
    					});

    					return true;
    				}

    				if (item.items.length && findAndAddReply(item.items, id)) {
    					return true;
    				}
    			}

    			return false;
    		};

    		findAndAddReply(comments, parentId);
    		$$invalidate(1, flattenedComments = flattenStructure(comments));
    	};

    	// Function to toggle reply input
    	function toggleReplyInput(commentId) {
    		$$invalidate(3, showReplyInput[commentId] = !showReplyInput[commentId], showReplyInput);
    	}

    	function exportToJson() {
    		const dataStr = "data:text/json;charset=utf-8," + encodeURIComponent(JSON.stringify(comments));
    		const downloadAnchorNode = document.createElement('a');
    		downloadAnchorNode.setAttribute("href", dataStr);
    		downloadAnchorNode.setAttribute("download", "comments.json");
    		document.body.appendChild(downloadAnchorNode);
    		downloadAnchorNode.click();
    		downloadAnchorNode.remove();
    	}

    	function handleFileUpload(event) {
    		const file = event.target.files[0];
    		if (!file) return;
    		const reader = new FileReader();

    		reader.onload = e => {
    			const text = e.target.result;

    			try {
    				comments = JSON.parse(text);
    				$$invalidate(1, flattenedComments = flattenStructure(comments));
    			} catch(error) {
    				console.error("Error parsing JSON:", error);
    			}
    		};

    		reader.readAsText(file);
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$6.warn(`<RecursiveNestedCommentsElement> was created with unknown prop '${key}'`);
    	});

    	function input1_input_handler() {
    		newComment = this.value;
    		$$invalidate(0, newComment);
    	}

    	const click_handler = comment => toggleReplyInput(comment.id);

    	function input_input_handler(comment) {
    		replyText[comment.id] = this.value;
    		$$invalidate(2, replyText);
    	}

    	const click_handler_1 = comment => {
    		addReply(comment.id, replyText[comment.id]);
    		toggleReplyInput(comment.id);
    	};

    	$$self.$capture_state = () => ({
    		uuidv4: v4,
    		SimpleIFrame,
    		LLMforassit,
    		comments,
    		newComment,
    		flattenedComments,
    		replyText,
    		showReplyInput,
    		flattenStructure,
    		addComment,
    		addReply,
    		toggleReplyInput,
    		exportToJson,
    		handleFileUpload
    	});

    	$$self.$inject_state = $$props => {
    		if ('LLMforassit' in $$props) $$invalidate(4, LLMforassit = $$props.LLMforassit);
    		if ('comments' in $$props) comments = $$props.comments;
    		if ('newComment' in $$props) $$invalidate(0, newComment = $$props.newComment);
    		if ('flattenedComments' in $$props) $$invalidate(1, flattenedComments = $$props.flattenedComments);
    		if ('replyText' in $$props) $$invalidate(2, replyText = $$props.replyText);
    		if ('showReplyInput' in $$props) $$invalidate(3, showReplyInput = $$props.showReplyInput);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		newComment,
    		flattenedComments,
    		replyText,
    		showReplyInput,
    		LLMforassit,
    		addComment,
    		addReply,
    		toggleReplyInput,
    		exportToJson,
    		handleFileUpload,
    		input1_input_handler,
    		click_handler,
    		input_input_handler,
    		click_handler_1
    	];
    }

    class RecursiveNestedCommentsElement extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$d, create_fragment$d, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "RecursiveNestedCommentsElement",
    			options,
    			id: create_fragment$d.name
    		});
    	}
    }

    /* src\CopyandRemoveListComponent.svelte generated by Svelte v3.59.2 */

    const { console: console_1$5 } = globals;
    const file$c = "src\\CopyandRemoveListComponent.svelte";

    function get_each_context$9(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[6] = list[i];
    	return child_ctx;
    }

    // (26:0) {:else}
    function create_else_block$1(ctx) {
    	let each_blocks = [];
    	let each_1_lookup = new Map();
    	let each_1_anchor;
    	let each_value = /*items*/ ctx[1];
    	validate_each_argument(each_value);
    	const get_key = ctx => /*item*/ ctx[6].id;
    	validate_each_keys(ctx, each_value, get_each_context$9, get_key);

    	for (let i = 0; i < each_value.length; i += 1) {
    		let child_ctx = get_each_context$9(ctx, each_value, i);
    		let key = get_key(child_ctx);
    		each_1_lookup.set(key, each_blocks[i] = create_each_block$9(key, child_ctx));
    	}

    	const block = {
    		c: function create() {
    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			each_1_anchor = empty();
    		},
    		m: function mount(target, anchor) {
    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(target, anchor);
    				}
    			}

    			insert_dev(target, each_1_anchor, anchor);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*copyAndRemoveItem, items*/ 10) {
    				each_value = /*items*/ ctx[1];
    				validate_each_argument(each_value);
    				validate_each_keys(ctx, each_value, get_each_context$9, get_key);
    				each_blocks = update_keyed_each(each_blocks, dirty, get_key, 1, ctx, each_value, each_1_lookup, each_1_anchor.parentNode, destroy_block, create_each_block$9, each_1_anchor, get_each_context$9);
    			}
    		},
    		d: function destroy(detaching) {
    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].d(detaching);
    			}

    			if (detaching) detach_dev(each_1_anchor);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_else_block$1.name,
    		type: "else",
    		source: "(26:0) {:else}",
    		ctx
    	});

    	return block;
    }

    // (24:0) {#if items.length === 0}
    function create_if_block$5(ctx) {
    	let p;

    	const block = {
    		c: function create() {
    			p = element$1("p");
    			p.textContent = "All items have been copied! (or none entered yet)";
    			add_location(p, file$c, 24, 4, 732);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, p, anchor);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(p);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$5.name,
    		type: "if",
    		source: "(24:0) {#if items.length === 0}",
    		ctx
    	});

    	return block;
    }

    // (27:4) {#each items as item (item.id)}
    function create_each_block$9(key_1, ctx) {
    	let button;
    	let t0_value = /*item*/ ctx[6].text + "";
    	let t0;
    	let t1;
    	let mounted;
    	let dispose;

    	function click_handler() {
    		return /*click_handler*/ ctx[5](/*item*/ ctx[6]);
    	}

    	const block = {
    		key: key_1,
    		first: null,
    		c: function create() {
    			button = element$1("button");
    			t0 = text(t0_value);
    			t1 = space();
    			attr_dev(button, "class", "item svelte-13m3fab");
    			add_location(button, file$c, 27, 8, 844);
    			this.first = button;
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button, anchor);
    			append_dev(button, t0);
    			append_dev(button, t1);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", click_handler, false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;
    			if (dirty & /*items*/ 2 && t0_value !== (t0_value = /*item*/ ctx[6].text + "")) set_data_dev(t0, t0_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$9.name,
    		type: "each",
    		source: "(27:4) {#each items as item (item.id)}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$c(ctx) {
    	let h1;
    	let t1;
    	let textarea;
    	let t2;
    	let if_block_anchor;
    	let mounted;
    	let dispose;

    	function select_block_type(ctx, dirty) {
    		if (/*items*/ ctx[1].length === 0) return create_if_block$5;
    		return create_else_block$1;
    	}

    	let current_block_type = select_block_type(ctx);
    	let if_block = current_block_type(ctx);

    	const block = {
    		c: function create() {
    			h1 = element$1("h1");
    			h1.textContent = "Copy items for prompts by clicking buttons below";
    			t1 = space();
    			textarea = element$1("textarea");
    			t2 = space();
    			if_block.c();
    			if_block_anchor = empty();
    			add_location(h1, file$c, 19, 0, 537);
    			attr_dev(textarea, "placeholder", "Enter text here...");
    			attr_dev(textarea, "class", "svelte-13m3fab");
    			add_location(textarea, file$c, 21, 0, 598);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h1, anchor);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, textarea, anchor);
    			set_input_value(textarea, /*textInput*/ ctx[0]);
    			insert_dev(target, t2, anchor);
    			if_block.m(target, anchor);
    			insert_dev(target, if_block_anchor, anchor);

    			if (!mounted) {
    				dispose = [
    					listen_dev(textarea, "input", /*textarea_input_handler*/ ctx[4]),
    					listen_dev(textarea, "input", /*updateItems*/ ctx[2], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*textInput*/ 1) {
    				set_input_value(textarea, /*textInput*/ ctx[0]);
    			}

    			if (current_block_type === (current_block_type = select_block_type(ctx)) && if_block) {
    				if_block.p(ctx, dirty);
    			} else {
    				if_block.d(1);
    				if_block = current_block_type(ctx);

    				if (if_block) {
    					if_block.c();
    					if_block.m(if_block_anchor.parentNode, if_block_anchor);
    				}
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h1);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(textarea);
    			if (detaching) detach_dev(t2);
    			if_block.d(detaching);
    			if (detaching) detach_dev(if_block_anchor);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$c.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$c($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('CopyandRemoveListComponent', slots, []);
    	let textInput = '';
    	let items = [];

    	function updateItems() {
    		$$invalidate(1, items = textInput.split('\n').filter(line => line.trim() !== '').map((line, index) => ({ id: index + line, text: line })));
    	}

    	async function copyAndRemoveItem(item) {
    		try {
    			await navigator.clipboard.writeText(item.text);
    			$$invalidate(1, items = items.filter(i => i.id !== item.id));
    		} catch(err) {
    			console.error('Failed to copy text: ', err);
    		}
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$5.warn(`<CopyandRemoveListComponent> was created with unknown prop '${key}'`);
    	});

    	function textarea_input_handler() {
    		textInput = this.value;
    		$$invalidate(0, textInput);
    	}

    	const click_handler = item => copyAndRemoveItem(item);

    	$$self.$capture_state = () => ({
    		textInput,
    		items,
    		updateItems,
    		copyAndRemoveItem
    	});

    	$$self.$inject_state = $$props => {
    		if ('textInput' in $$props) $$invalidate(0, textInput = $$props.textInput);
    		if ('items' in $$props) $$invalidate(1, items = $$props.items);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		textInput,
    		items,
    		updateItems,
    		copyAndRemoveItem,
    		textarea_input_handler,
    		click_handler
    	];
    }

    class CopyandRemoveListComponent extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$c, create_fragment$c, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "CopyandRemoveListComponent",
    			options,
    			id: create_fragment$c.name
    		});
    	}
    }

    /* src\ReadingStateCounter.svelte generated by Svelte v3.59.2 */

    const file$b = "src\\ReadingStateCounter.svelte";

    function get_each_context$8(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[8] = list[i];
    	child_ctx[10] = i;
    	return child_ctx;
    }

    // (67:4) {#each words as wordObj, index (index)}
    function create_each_block$8(key_1, ctx) {
    	let button;
    	let t0_value = /*wordObj*/ ctx[8].word + "";
    	let t0;
    	let t1;
    	let t2_value = /*wordObj*/ ctx[8].count + "";
    	let t2;
    	let t3;
    	let mounted;
    	let dispose;

    	function click_handler() {
    		return /*click_handler*/ ctx[7](/*index*/ ctx[10]);
    	}

    	const block = {
    		key: key_1,
    		first: null,
    		c: function create() {
    			button = element$1("button");
    			t0 = text(t0_value);
    			t1 = text(" (");
    			t2 = text(t2_value);
    			t3 = text(")\r\n        ");
    			attr_dev(button, "class", "word-button svelte-13vjncp");
    			set_style(button, "background-color", getColor(/*wordObj*/ ctx[8].count));
    			add_location(button, file$b, 67, 8, 1994);
    			this.first = button;
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button, anchor);
    			append_dev(button, t0);
    			append_dev(button, t1);
    			append_dev(button, t2);
    			append_dev(button, t3);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", click_handler, false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;
    			if (dirty & /*words*/ 2 && t0_value !== (t0_value = /*wordObj*/ ctx[8].word + "")) set_data_dev(t0, t0_value);
    			if (dirty & /*words*/ 2 && t2_value !== (t2_value = /*wordObj*/ ctx[8].count + "")) set_data_dev(t2, t2_value);

    			if (dirty & /*words*/ 2) {
    				set_style(button, "background-color", getColor(/*wordObj*/ ctx[8].count));
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$8.name,
    		type: "each",
    		source: "(67:4) {#each words as wordObj, index (index)}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$b(ctx) {
    	let div0;
    	let h1;
    	let t1;
    	let input0;
    	let t2;
    	let button0;
    	let t4;
    	let button1;
    	let t6;
    	let input1;
    	let t7;
    	let div1;
    	let each_blocks = [];
    	let each_1_lookup = new Map();
    	let mounted;
    	let dispose;
    	let each_value = /*words*/ ctx[1];
    	validate_each_argument(each_value);
    	const get_key = ctx => /*index*/ ctx[10];
    	validate_each_keys(ctx, each_value, get_each_context$8, get_key);

    	for (let i = 0; i < each_value.length; i += 1) {
    		let child_ctx = get_each_context$8(ctx, each_value, i);
    		let key = get_key(child_ctx);
    		each_1_lookup.set(key, each_blocks[i] = create_each_block$8(key, child_ctx));
    	}

    	const block = {
    		c: function create() {
    			div0 = element$1("div");
    			h1 = element$1("h1");
    			h1.textContent = "Stateful Reader Brainstorm";
    			t1 = space();
    			input0 = element$1("input");
    			t2 = space();
    			button0 = element$1("button");
    			button0.textContent = "Submit Text";
    			t4 = space();
    			button1 = element$1("button");
    			button1.textContent = "Export to JSON";
    			t6 = space();
    			input1 = element$1("input");
    			t7 = space();
    			div1 = element$1("div");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(h1, file$b, 57, 4, 1576);
    			attr_dev(input0, "type", "text");
    			attr_dev(input0, "placeholder", "Enter text here");
    			attr_dev(input0, "class", "svelte-13vjncp");
    			add_location(input0, file$b, 58, 4, 1617);
    			attr_dev(button0, "class", "svelte-13vjncp");
    			add_location(button0, file$b, 59, 4, 1696);
    			attr_dev(button1, "class", "svelte-13vjncp");
    			add_location(button1, file$b, 60, 4, 1752);
    			attr_dev(input1, "type", "file");
    			attr_dev(input1, "class", "svelte-13vjncp");
    			add_location(input1, file$b, 61, 4, 1813);
    			add_location(div0, file$b, 56, 0, 1565);
    			add_location(div1, file$b, 64, 0, 1873);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div0, anchor);
    			append_dev(div0, h1);
    			append_dev(div0, t1);
    			append_dev(div0, input0);
    			set_input_value(input0, /*inputText*/ ctx[0]);
    			append_dev(div0, t2);
    			append_dev(div0, button0);
    			append_dev(div0, t4);
    			append_dev(div0, button1);
    			append_dev(div0, t6);
    			append_dev(div0, input1);
    			insert_dev(target, t7, anchor);
    			insert_dev(target, div1, anchor);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div1, null);
    				}
    			}

    			if (!mounted) {
    				dispose = [
    					listen_dev(input0, "input", /*input0_input_handler*/ ctx[6]),
    					listen_dev(button0, "click", /*submitText*/ ctx[2], false, false, false, false),
    					listen_dev(button1, "click", /*exportToJson*/ ctx[4], false, false, false, false),
    					listen_dev(input1, "change", /*importFromJson*/ ctx[5], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*inputText*/ 1 && input0.value !== /*inputText*/ ctx[0]) {
    				set_input_value(input0, /*inputText*/ ctx[0]);
    			}

    			if (dirty & /*getColor, words, handleClick*/ 10) {
    				each_value = /*words*/ ctx[1];
    				validate_each_argument(each_value);
    				validate_each_keys(ctx, each_value, get_each_context$8, get_key);
    				each_blocks = update_keyed_each(each_blocks, dirty, get_key, 1, ctx, each_value, each_1_lookup, div1, destroy_block, create_each_block$8, null, get_each_context$8);
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div0);
    			if (detaching) detach_dev(t7);
    			if (detaching) detach_dev(div1);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].d();
    			}

    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$b.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function getColor(count) {
    	const colors = [
    		'#1a1a1a',
    		'#333333',
    		'#4d4d4d',
    		'#666666',
    		'#808080',
    		'#999999',
    		'#b3b3b3',
    		'#cccccc',
    		'#e6e6e6',
    		'#ffffff'
    	];

    	return colors[Math.min(Math.floor(count / 10), 9)];
    }

    function instance$b($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('ReadingStateCounter', slots, []);
    	let inputText = "";
    	let words = [];

    	function submitText() {
    		$$invalidate(1, words = inputText.split(/\s+/).map(word => ({ word, count: 0 })));
    	}

    	function handleClick(index) {
    		$$invalidate(1, words[index].count += 1, words);
    		$$invalidate(1, words = [...words]); // Ensures Svelte detects the change
    	}

    	// Function to export data to JSON
    	function exportToJson() {
    		const jsonData = JSON.stringify(words);
    		const blob = new Blob([jsonData], { type: "application/json" });
    		const url = URL.createObjectURL(blob);
    		const a = document.createElement('a');
    		a.href = url;
    		a.download = 'statefulwords.json';
    		a.click();
    		URL.revokeObjectURL(url);
    	}

    	// Function to handle file import
    	function importFromJson(event) {
    		const file = event.target.files[0];

    		if (file) {
    			const reader = new FileReader();

    			reader.onload = e => {
    				const json = e.target.result;
    				$$invalidate(1, words = JSON.parse(json));
    			};

    			reader.readAsText(file);
    		}
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<ReadingStateCounter> was created with unknown prop '${key}'`);
    	});

    	function input0_input_handler() {
    		inputText = this.value;
    		$$invalidate(0, inputText);
    	}

    	const click_handler = index => handleClick(index);

    	$$self.$capture_state = () => ({
    		inputText,
    		words,
    		submitText,
    		handleClick,
    		getColor,
    		exportToJson,
    		importFromJson
    	});

    	$$self.$inject_state = $$props => {
    		if ('inputText' in $$props) $$invalidate(0, inputText = $$props.inputText);
    		if ('words' in $$props) $$invalidate(1, words = $$props.words);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		inputText,
    		words,
    		submitText,
    		handleClick,
    		exportToJson,
    		importFromJson,
    		input0_input_handler,
    		click_handler
    	];
    }

    class ReadingStateCounter extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$b, create_fragment$b, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "ReadingStateCounter",
    			options,
    			id: create_fragment$b.name
    		});
    	}
    }

    /* src\DeliberateSubconciousRepititionPractice.svelte generated by Svelte v3.59.2 */

    const { Object: Object_1$1, console: console_1$4 } = globals;
    const file$a = "src\\DeliberateSubconciousRepititionPractice.svelte";

    // (156:0) {#if selectedItem}
    function create_if_block_1$2(ctx) {
    	let div;
    	let strong0;
    	let t1;
    	let t2_value = /*selectedItem*/ ctx[1].text + "";
    	let t2;
    	let t3;
    	let strong1;
    	let t5;
    	let t6_value = /*counts*/ ctx[2][/*selectedItem*/ ctx[1].id] + "";
    	let t6;

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			strong0 = element$1("strong");
    			strong0.textContent = "Current Word:";
    			t1 = space();
    			t2 = text(t2_value);
    			t3 = space();
    			strong1 = element$1("strong");
    			strong1.textContent = "Count:";
    			t5 = space();
    			t6 = text(t6_value);
    			add_location(strong0, file$a, 157, 8, 5744);
    			add_location(strong1, file$a, 158, 8, 5805);
    			add_location(div, file$a, 156, 4, 5729);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, strong0);
    			append_dev(div, t1);
    			append_dev(div, t2);
    			append_dev(div, t3);
    			append_dev(div, strong1);
    			append_dev(div, t5);
    			append_dev(div, t6);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*selectedItem*/ 2 && t2_value !== (t2_value = /*selectedItem*/ ctx[1].text + "")) set_data_dev(t2, t2_value);
    			if (dirty & /*counts, selectedItem*/ 6 && t6_value !== (t6_value = /*counts*/ ctx[2][/*selectedItem*/ ctx[1].id] + "")) set_data_dev(t6, t6_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_1$2.name,
    		type: "if",
    		source: "(156:0) {#if selectedItem}",
    		ctx
    	});

    	return block;
    }

    // (163:0) {#if allWordsLimitReached}
    function create_if_block$4(ctx) {
    	let div;

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			div.textContent = "All words have reached the count limit.";
    			attr_dev(div, "class", "alert svelte-fb2ql8");
    			add_location(div, file$a, 163, 4, 5910);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$4.name,
    		type: "if",
    		source: "(163:0) {#if allWordsLimitReached}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$a(ctx) {
    	let h1;
    	let t1;
    	let input0;
    	let t2;
    	let button0;
    	let t4;
    	let br;
    	let t5;
    	let textarea0;
    	let t6;
    	let hr0;
    	let t7;
    	let div;
    	let label;
    	let t9;
    	let input1;
    	let t10;
    	let t11;
    	let t12;
    	let button1;
    	let t14;
    	let button2;
    	let t16;
    	let hr1;
    	let t17;
    	let button3;
    	let t19;
    	let textarea1;
    	let mounted;
    	let dispose;
    	let if_block0 = /*selectedItem*/ ctx[1] && create_if_block_1$2(ctx);
    	let if_block1 = /*allWordsLimitReached*/ ctx[4] && create_if_block$4(ctx);

    	const block = {
    		c: function create() {
    			h1 = element$1("h1");
    			h1.textContent = "Random Word till appearance count reached for TTS";
    			t1 = space();
    			input0 = element$1("input");
    			t2 = space();
    			button0 = element$1("button");
    			button0.textContent = "Export Counts";
    			t4 = space();
    			br = element$1("br");
    			t5 = space();
    			textarea0 = element$1("textarea");
    			t6 = space();
    			hr0 = element$1("hr");
    			t7 = space();
    			div = element$1("div");
    			label = element$1("label");
    			label.textContent = "Total Count Limit:";
    			t9 = space();
    			input1 = element$1("input");
    			t10 = space();
    			if (if_block0) if_block0.c();
    			t11 = space();
    			if (if_block1) if_block1.c();
    			t12 = space();
    			button1 = element$1("button");
    			button1.textContent = "Start";
    			t14 = space();
    			button2 = element$1("button");
    			button2.textContent = "Stop";
    			t16 = space();
    			hr1 = element$1("hr");
    			t17 = space();
    			button3 = element$1("button");
    			button3.textContent = "Simulate one hour or limit Counts";
    			t19 = space();
    			textarea1 = element$1("textarea");
    			add_location(h1, file$a, 141, 0, 5255);
    			attr_dev(input0, "type", "file");
    			add_location(input0, file$a, 143, 0, 5317);
    			add_location(button0, file$a, 144, 0, 5365);
    			add_location(br, file$a, 145, 0, 5421);
    			attr_dev(textarea0, "placeholder", "Enter text here...");
    			add_location(textarea0, file$a, 146, 0, 5427);
    			add_location(hr0, file$a, 148, 0, 5531);
    			attr_dev(label, "for", "totalCountLimit");
    			add_location(label, file$a, 151, 4, 5550);
    			attr_dev(input1, "type", "number");
    			attr_dev(input1, "min", "1");
    			attr_dev(input1, "id", "totalCountLimit");
    			add_location(input1, file$a, 152, 4, 5612);
    			add_location(div, file$a, 150, 0, 5539);
    			add_location(button1, file$a, 168, 0, 6001);
    			add_location(button2, file$a, 169, 0, 6042);
    			add_location(hr1, file$a, 171, 0, 6083);
    			add_location(button3, file$a, 173, 0, 6091);
    			textarea1.readOnly = true;
    			attr_dev(textarea1, "placeholder", "Simulation result will be shown here...");
    			add_location(textarea1, file$a, 174, 0, 6168);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h1, anchor);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, input0, anchor);
    			insert_dev(target, t2, anchor);
    			insert_dev(target, button0, anchor);
    			insert_dev(target, t4, anchor);
    			insert_dev(target, br, anchor);
    			insert_dev(target, t5, anchor);
    			insert_dev(target, textarea0, anchor);
    			set_input_value(textarea0, /*textInput*/ ctx[0]);
    			insert_dev(target, t6, anchor);
    			insert_dev(target, hr0, anchor);
    			insert_dev(target, t7, anchor);
    			insert_dev(target, div, anchor);
    			append_dev(div, label);
    			append_dev(div, t9);
    			append_dev(div, input1);
    			set_input_value(input1, /*totalCountLimit*/ ctx[3]);
    			insert_dev(target, t10, anchor);
    			if (if_block0) if_block0.m(target, anchor);
    			insert_dev(target, t11, anchor);
    			if (if_block1) if_block1.m(target, anchor);
    			insert_dev(target, t12, anchor);
    			insert_dev(target, button1, anchor);
    			insert_dev(target, t14, anchor);
    			insert_dev(target, button2, anchor);
    			insert_dev(target, t16, anchor);
    			insert_dev(target, hr1, anchor);
    			insert_dev(target, t17, anchor);
    			insert_dev(target, button3, anchor);
    			insert_dev(target, t19, anchor);
    			insert_dev(target, textarea1, anchor);
    			set_input_value(textarea1, /*simulationResult*/ ctx[5]);

    			if (!mounted) {
    				dispose = [
    					listen_dev(input0, "change", /*importCounts*/ ctx[10], false, false, false, false),
    					listen_dev(button0, "click", /*exportCounts*/ ctx[9], false, false, false, false),
    					listen_dev(textarea0, "input", /*textarea0_input_handler*/ ctx[12]),
    					listen_dev(textarea0, "input", /*updateItems*/ ctx[6], false, false, false, false),
    					listen_dev(input1, "input", /*input1_input_handler*/ ctx[13]),
    					listen_dev(button1, "click", /*start*/ ctx[7], false, false, false, false),
    					listen_dev(button2, "click", /*stop*/ ctx[8], false, false, false, false),
    					listen_dev(button3, "click", /*simulateCount*/ ctx[11], false, false, false, false),
    					listen_dev(textarea1, "input", /*textarea1_input_handler*/ ctx[14])
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*textInput*/ 1) {
    				set_input_value(textarea0, /*textInput*/ ctx[0]);
    			}

    			if (dirty & /*totalCountLimit*/ 8 && to_number(input1.value) !== /*totalCountLimit*/ ctx[3]) {
    				set_input_value(input1, /*totalCountLimit*/ ctx[3]);
    			}

    			if (/*selectedItem*/ ctx[1]) {
    				if (if_block0) {
    					if_block0.p(ctx, dirty);
    				} else {
    					if_block0 = create_if_block_1$2(ctx);
    					if_block0.c();
    					if_block0.m(t11.parentNode, t11);
    				}
    			} else if (if_block0) {
    				if_block0.d(1);
    				if_block0 = null;
    			}

    			if (/*allWordsLimitReached*/ ctx[4]) {
    				if (if_block1) ; else {
    					if_block1 = create_if_block$4(ctx);
    					if_block1.c();
    					if_block1.m(t12.parentNode, t12);
    				}
    			} else if (if_block1) {
    				if_block1.d(1);
    				if_block1 = null;
    			}

    			if (dirty & /*simulationResult*/ 32) {
    				set_input_value(textarea1, /*simulationResult*/ ctx[5]);
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h1);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(input0);
    			if (detaching) detach_dev(t2);
    			if (detaching) detach_dev(button0);
    			if (detaching) detach_dev(t4);
    			if (detaching) detach_dev(br);
    			if (detaching) detach_dev(t5);
    			if (detaching) detach_dev(textarea0);
    			if (detaching) detach_dev(t6);
    			if (detaching) detach_dev(hr0);
    			if (detaching) detach_dev(t7);
    			if (detaching) detach_dev(div);
    			if (detaching) detach_dev(t10);
    			if (if_block0) if_block0.d(detaching);
    			if (detaching) detach_dev(t11);
    			if (if_block1) if_block1.d(detaching);
    			if (detaching) detach_dev(t12);
    			if (detaching) detach_dev(button1);
    			if (detaching) detach_dev(t14);
    			if (detaching) detach_dev(button2);
    			if (detaching) detach_dev(t16);
    			if (detaching) detach_dev(hr1);
    			if (detaching) detach_dev(t17);
    			if (detaching) detach_dev(button3);
    			if (detaching) detach_dev(t19);
    			if (detaching) detach_dev(textarea1);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$a.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$a($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('DeliberateSubconciousRepititionPractice', slots, []);
    	let textInput = '';
    	let items = [];
    	let running = false;
    	let selectedItem = null;
    	let intervalId = null;
    	let counts = {};
    	let totalCountLimit = 10; // Default limit, can be changed by the user
    	let allWordsLimitReached = false;
    	let simulationResult = ''; // Variable to hold the result of the simulation

    	function updateItems() {
    		items = textInput.split(/\W+/).filter(word => word.trim() !== '').map(word => ({ id: word, text: word })); // Use word itself as the ID
    		$$invalidate(2, counts = items.reduce((acc, item) => ({ ...acc, [item.id]: 0 }), {}));
    	}

    	function start() {
    		if (!running && items.length > 0) {
    			running = true;

    			intervalId = setInterval(
    				() => {
    					// Filter out items that have reached the totalCountLimit
    					const eligibleItems = items.filter(item => counts[item.id] < totalCountLimit);

    					// If there are no eligible items left, stop the timer
    					if (eligibleItems.length === 0) {
    						stop();
    						$$invalidate(4, allWordsLimitReached = true); // Set when all words reach the limit
    						return;
    					}

    					// Select a random item from the eligible items
    					const randomIndex = Math.floor(Math.random() * eligibleItems.length);

    					$$invalidate(1, selectedItem = eligibleItems[randomIndex]);
    					$$invalidate(2, counts[selectedItem.id]++, counts);
    				},
    				1000
    			);
    		}
    	}

    	function stop() {
    		if (running) {
    			clearInterval(intervalId);
    			running = false;
    			intervalId = null;
    		}
    	}

    	function exportCounts() {
    		const dataStr = JSON.stringify(counts);
    		const blob = new Blob([dataStr], { type: "application/json" });
    		const url = URL.createObjectURL(blob);
    		const link = document.createElement("a");
    		link.download = "counts.json";
    		link.href = url;
    		link.click();
    	}

    	function importCounts(event) {
    		const fileReader = new FileReader();

    		fileReader.onload = e => {
    			const data = JSON.parse(e.target.result);
    			$$invalidate(2, counts = { ...counts, ...data });

    			items = Object.keys(data).map((word, index) => ({
    				id: word, // Use word itself as the ID
    				text: word
    			}));

    			// Ensure existing items are updated if they are not in the imported data
    			items.forEach(item => {
    				if (!counts[item.id]) {
    					$$invalidate(2, counts[item.id] = 0, counts);
    				}
    			});
    		};

    		fileReader.readAsText(event.target.files[0]);
    	}

    	// ... (other variables and functions remain unchanged)
    	function simulateCount() {
    		let simulatedTime = 0;
    		let maxSimulatedSeconds = 3600; // 3600 seconds = 1 hour
    		let simulationOutput = ""; // Accumulate output here

    		// Reset the allWordsLimitReached flag and simulationResult
    		$$invalidate(4, allWordsLimitReached = false);

    		$$invalidate(5, simulationResult = '');

    		// Simulate until max time is reached or all words hit the limit
    		while (simulatedTime < maxSimulatedSeconds && !allWordsLimitReached) {
    			const eligibleItems = items.filter(item => counts[item.id] < totalCountLimit);

    			if (eligibleItems.length === 0) {
    				$$invalidate(4, allWordsLimitReached = true); // Set when all words reach the limit
    				break; // Exit the loop if all words hit the limit
    			}

    			// Select a random item and increment its count
    			const randomIndex = Math.floor(Math.random() * eligibleItems.length);

    			$$invalidate(1, selectedItem = eligibleItems[randomIndex]);
    			$$invalidate(2, counts[selectedItem.id]++, counts);
    			simulationOutput += selectedItem.text + " "; // Append selected word to output

    			// Increment simulated time (equivalent to the time between iterations in the real scenario)
    			simulatedTime++;
    		}

    		// Update simulationResult with a message
    		if (allWordsLimitReached) {
    			$$invalidate(5, simulationResult = "All words have reached the count limit during simulation.");
    		} else {
    			$$invalidate(5, simulationResult = `Simulation finished after ${simulatedTime} seconds.`);
    		}

    		// Export the simulation output to a text file
    		exportSimulationOutput(simulationOutput);
    	}

    	function exportSimulationOutput(output) {
    		if (output) {
    			const blob = new Blob([output], { type: "text/plain" });
    			const url = URL.createObjectURL(blob);
    			const link = document.createElement("a");
    			link.download = "simulation_output.txt";
    			link.href = url;
    			link.click();
    		} else {
    			console.error("No simulation output to export.");
    			$$invalidate(5, simulationResult = "No simulation output to export.");
    		}
    	}

    	onDestroy(() => {
    		if (intervalId) {
    			clearInterval(intervalId);
    		}
    	});

    	const writable_props = [];

    	Object_1$1.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$4.warn(`<DeliberateSubconciousRepititionPractice> was created with unknown prop '${key}'`);
    	});

    	function textarea0_input_handler() {
    		textInput = this.value;
    		$$invalidate(0, textInput);
    	}

    	function input1_input_handler() {
    		totalCountLimit = to_number(this.value);
    		$$invalidate(3, totalCountLimit);
    	}

    	function textarea1_input_handler() {
    		simulationResult = this.value;
    		$$invalidate(5, simulationResult);
    	}

    	$$self.$capture_state = () => ({
    		onDestroy,
    		textInput,
    		items,
    		running,
    		selectedItem,
    		intervalId,
    		counts,
    		totalCountLimit,
    		allWordsLimitReached,
    		simulationResult,
    		updateItems,
    		start,
    		stop,
    		exportCounts,
    		importCounts,
    		simulateCount,
    		exportSimulationOutput
    	});

    	$$self.$inject_state = $$props => {
    		if ('textInput' in $$props) $$invalidate(0, textInput = $$props.textInput);
    		if ('items' in $$props) items = $$props.items;
    		if ('running' in $$props) running = $$props.running;
    		if ('selectedItem' in $$props) $$invalidate(1, selectedItem = $$props.selectedItem);
    		if ('intervalId' in $$props) intervalId = $$props.intervalId;
    		if ('counts' in $$props) $$invalidate(2, counts = $$props.counts);
    		if ('totalCountLimit' in $$props) $$invalidate(3, totalCountLimit = $$props.totalCountLimit);
    		if ('allWordsLimitReached' in $$props) $$invalidate(4, allWordsLimitReached = $$props.allWordsLimitReached);
    		if ('simulationResult' in $$props) $$invalidate(5, simulationResult = $$props.simulationResult);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		textInput,
    		selectedItem,
    		counts,
    		totalCountLimit,
    		allWordsLimitReached,
    		simulationResult,
    		updateItems,
    		start,
    		stop,
    		exportCounts,
    		importCounts,
    		simulateCount,
    		textarea0_input_handler,
    		input1_input_handler,
    		textarea1_input_handler
    	];
    }

    class DeliberateSubconciousRepititionPractice extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$a, create_fragment$a, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "DeliberateSubconciousRepititionPractice",
    			options,
    			id: create_fragment$a.name
    		});
    	}
    }

    /* src\LLMWorkflowTest.svelte generated by Svelte v3.59.2 */

    const { Object: Object_1, console: console_1$3 } = globals;
    const file$9 = "src\\LLMWorkflowTest.svelte";

    function get_each_context$7(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[10] = list[i];
    	child_ctx[11] = list;
    	child_ctx[12] = i;
    	return child_ctx;
    }

    function get_each_context_1$6(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[13] = list[i];
    	return child_ctx;
    }

    // (87:4) {#each Object.keys(workflows) as workflow}
    function create_each_block_1$6(ctx) {
    	let option;
    	let t_value = /*workflow*/ ctx[13] + "";
    	let t;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = /*workflow*/ ctx[13];
    			option.value = option.__value;
    			add_location(option, file$9, 87, 6, 2693);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$6.name,
    		type: "each",
    		source: "(87:4) {#each Object.keys(workflows) as workflow}",
    		ctx
    	});

    	return block;
    }

    // (92:2) {#each placeholderInputs as placeholder}
    function create_each_block$7(ctx) {
    	let div;
    	let label;
    	let t0;
    	let t1_value = /*placeholder*/ ctx[10] + "";
    	let t1;
    	let t2;
    	let t3;
    	let input;
    	let mounted;
    	let dispose;

    	function input_input_handler() {
    		/*input_input_handler*/ ctx[8].call(input, /*placeholder*/ ctx[10]);
    	}

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			label = element$1("label");
    			t0 = text("Enter word for <");
    			t1 = text(t1_value);
    			t2 = text(">");
    			t3 = space();
    			input = element$1("input");
    			add_location(label, file$9, 93, 6, 2828);
    			attr_dev(input, "type", "text");
    			add_location(input, file$9, 94, 6, 2887);
    			add_location(div, file$9, 92, 4, 2815);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, label);
    			append_dev(label, t0);
    			append_dev(label, t1);
    			append_dev(label, t2);
    			append_dev(div, t3);
    			append_dev(div, input);
    			set_input_value(input, /*placeholderValues*/ ctx[1][/*placeholder*/ ctx[10]]);

    			if (!mounted) {
    				dispose = [
    					listen_dev(input, "input", input_input_handler),
    					listen_dev(input, "input", /*updateInputs*/ ctx[6], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;
    			if (dirty & /*placeholderInputs*/ 4 && t1_value !== (t1_value = /*placeholder*/ ctx[10] + "")) set_data_dev(t1, t1_value);

    			if (dirty & /*placeholderValues, placeholderInputs*/ 6 && input.value !== /*placeholderValues*/ ctx[1][/*placeholder*/ ctx[10]]) {
    				set_input_value(input, /*placeholderValues*/ ctx[1][/*placeholder*/ ctx[10]]);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$7.name,
    		type: "each",
    		source: "(92:2) {#each placeholderInputs as placeholder}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$9(ctx) {
    	let div1;
    	let h1;
    	let t1;
    	let select;
    	let t2;
    	let t3;
    	let div0;
    	let t4;
    	let button;
    	let mounted;
    	let dispose;
    	let each_value_1 = Object.keys(/*workflows*/ ctx[3]);
    	validate_each_argument(each_value_1);
    	let each_blocks_1 = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks_1[i] = create_each_block_1$6(get_each_context_1$6(ctx, each_value_1, i));
    	}

    	let each_value = /*placeholderInputs*/ ctx[2];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$7(get_each_context$7(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			div1 = element$1("div");
    			h1 = element$1("h1");
    			h1.textContent = "Incompelete Workflow Interface";
    			t1 = space();
    			select = element$1("select");

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				each_blocks_1[i].c();
    			}

    			t2 = space();

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t3 = space();
    			div0 = element$1("div");
    			t4 = space();
    			button = element$1("button");
    			button.textContent = "Submit";
    			add_location(h1, file$9, 84, 2, 2523);
    			if (/*selectedWorkflow*/ ctx[0] === void 0) add_render_callback(() => /*select_change_handler*/ ctx[7].call(select));
    			add_location(select, file$9, 85, 2, 2566);
    			attr_dev(div0, "id", "input-group");
    			add_location(div0, file$9, 102, 2, 3039);
    			add_location(button, file$9, 104, 2, 3073);
    			add_location(div1, file$9, 83, 0, 2514);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div1, anchor);
    			append_dev(div1, h1);
    			append_dev(div1, t1);
    			append_dev(div1, select);

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				if (each_blocks_1[i]) {
    					each_blocks_1[i].m(select, null);
    				}
    			}

    			select_option(select, /*selectedWorkflow*/ ctx[0], true);
    			append_dev(div1, t2);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div1, null);
    				}
    			}

    			append_dev(div1, t3);
    			append_dev(div1, div0);
    			append_dev(div1, t4);
    			append_dev(div1, button);

    			if (!mounted) {
    				dispose = [
    					listen_dev(select, "change", /*select_change_handler*/ ctx[7]),
    					listen_dev(select, "change", /*handleWorkflowChange*/ ctx[4], false, false, false, false),
    					listen_dev(button, "click", /*processInputs*/ ctx[5], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*Object, workflows*/ 8) {
    				each_value_1 = Object.keys(/*workflows*/ ctx[3]);
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$6(ctx, each_value_1, i);

    					if (each_blocks_1[i]) {
    						each_blocks_1[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_1[i] = create_each_block_1$6(child_ctx);
    						each_blocks_1[i].c();
    						each_blocks_1[i].m(select, null);
    					}
    				}

    				for (; i < each_blocks_1.length; i += 1) {
    					each_blocks_1[i].d(1);
    				}

    				each_blocks_1.length = each_value_1.length;
    			}

    			if (dirty & /*selectedWorkflow, Object, workflows*/ 9) {
    				select_option(select, /*selectedWorkflow*/ ctx[0]);
    			}

    			if (dirty & /*placeholderValues, placeholderInputs, updateInputs*/ 70) {
    				each_value = /*placeholderInputs*/ ctx[2];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$7(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$7(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(div1, t3);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div1);
    			destroy_each(each_blocks_1, detaching);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$9.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$9($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('LLMWorkflowTest', slots, []);

    	let workflows = {
    		"Merged Spelling": {
    			steps: [
    				"Please make an image description the meaning of the word <word1>",
    				"next please find english words close in spelling to <word2>",
    				"great, next make an image description using those words",
    				"Thanks lets now merge the two seperate image descriptions together"
    			],
    			placeholders: { "<word1>": "much", "<word2>": "henduo" },
    			timeline: [[], 1, [1], [0, 2]]
    		},
    		"Another Workflow": {
    			steps: [
    				"Do something with <placeholder1>",
    				"Then do something else with <placeholder2>"
    			],
    			placeholders: {
    				"<placeholder1>": "value1",
    				"<placeholder2>": "value2"
    			},
    			timeline: [[], 1]
    		}
    	};

    	let selectedWorkflow = "Merged Spelling";
    	let placeholderValues = workflows[selectedWorkflow].placeholders;
    	let placeholderInputs = Object.keys(placeholderValues);
    	let timeline = workflows[selectedWorkflow].timeline;

    	function handleWorkflowChange() {
    		$$invalidate(1, placeholderValues = workflows[selectedWorkflow].placeholders);
    		$$invalidate(2, placeholderInputs = Object.keys(placeholderValues));
    		timeline = workflows[selectedWorkflow].timeline;
    		updateInputs();
    	}

    	function processInputs() {
    		const inputs = document.querySelectorAll('input[type="text"]');
    		console.log(`Workflow: ${selectedWorkflow}`);

    		inputs.forEach((input, i) => {
    			console.log(`Step ${i + 1}: ${input.value}`);
    		});
    	}

    	onMount(() => {
    		handleWorkflowChange();
    		updateInputs();
    	});

    	function updateInputs() {
    		const inputGroup = document.getElementById('input-group');
    		inputGroup.innerHTML = '';
    		const steps = workflows[selectedWorkflow].steps;

    		steps.forEach((step, i) => {
    			const label = placeholderInputs.reduce((updatedStep, placeholder) => updatedStep.replace(new RegExp(placeholder, 'g'), placeholderValues[placeholder]), step);

    			const dependencyText = Array.isArray(timeline[i])
    			? timeline[i].join(', ')
    			: timeline[i];

    			const inputBox = `
        <div>
          <label>${label}</label>
          <input type="text" />
          ${timeline[i].length > 0
			? `<span>Output depends on: ${dependencyText}</span>`
			: ''}
        </div>
      `;

    			inputGroup.innerHTML += inputBox;
    		});
    	}

    	const writable_props = [];

    	Object_1.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$3.warn(`<LLMWorkflowTest> was created with unknown prop '${key}'`);
    	});

    	function select_change_handler() {
    		selectedWorkflow = select_value(this);
    		$$invalidate(0, selectedWorkflow);
    		$$invalidate(3, workflows);
    	}

    	function input_input_handler(placeholder) {
    		placeholderValues[placeholder] = this.value;
    		$$invalidate(1, placeholderValues);
    	}

    	$$self.$capture_state = () => ({
    		onMount,
    		workflows,
    		selectedWorkflow,
    		placeholderValues,
    		placeholderInputs,
    		timeline,
    		handleWorkflowChange,
    		processInputs,
    		updateInputs
    	});

    	$$self.$inject_state = $$props => {
    		if ('workflows' in $$props) $$invalidate(3, workflows = $$props.workflows);
    		if ('selectedWorkflow' in $$props) $$invalidate(0, selectedWorkflow = $$props.selectedWorkflow);
    		if ('placeholderValues' in $$props) $$invalidate(1, placeholderValues = $$props.placeholderValues);
    		if ('placeholderInputs' in $$props) $$invalidate(2, placeholderInputs = $$props.placeholderInputs);
    		if ('timeline' in $$props) timeline = $$props.timeline;
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		selectedWorkflow,
    		placeholderValues,
    		placeholderInputs,
    		workflows,
    		handleWorkflowChange,
    		processInputs,
    		updateInputs,
    		select_change_handler,
    		input_input_handler
    	];
    }

    class LLMWorkflowTest extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$9, create_fragment$9, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "LLMWorkflowTest",
    			options,
    			id: create_fragment$9.name
    		});
    	}
    }

    /* src\PictureSubtitlesbasedonYTTranscript.svelte generated by Svelte v3.59.2 */

    const { console: console_1$2 } = globals;

    const file$8 = "src\\PictureSubtitlesbasedonYTTranscript.svelte";

    function get_each_context$6(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[25] = list[i];
    	return child_ctx;
    }

    function get_each_context_1$5(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[28] = list[i];
    	return child_ctx;
    }

    // (168:6) {#each subtitleData.images as image}
    function create_each_block_1$5(ctx) {
    	let img;
    	let img_src_value;

    	const block = {
    		c: function create() {
    			img = element$1("img");
    			if (!src_url_equal(img.src, img_src_value = /*image*/ ctx[28])) attr_dev(img, "src", img_src_value);
    			attr_dev(img, "alt", "Subtitle Image");
    			add_location(img, file$8, 168, 8, 5640);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, img, anchor);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*subtitlesOutput*/ 2 && !src_url_equal(img.src, img_src_value = /*image*/ ctx[28])) {
    				attr_dev(img, "src", img_src_value);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(img);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$5.name,
    		type: "each",
    		source: "(168:6) {#each subtitleData.images as image}",
    		ctx
    	});

    	return block;
    }

    // (165:2) {#each subtitlesOutput as subtitleData}
    function create_each_block$6(ctx) {
    	let div;
    	let p;
    	let t0_value = /*subtitleData*/ ctx[25].text + "";
    	let t0;
    	let t1;
    	let t2;
    	let each_value_1 = /*subtitleData*/ ctx[25].images;
    	validate_each_argument(each_value_1);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks[i] = create_each_block_1$5(get_each_context_1$5(ctx, each_value_1, i));
    	}

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			p = element$1("p");
    			t0 = text(t0_value);
    			t1 = space();

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t2 = space();
    			add_location(p, file$8, 166, 6, 5560);
    			add_location(div, file$8, 165, 4, 5547);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, p);
    			append_dev(p, t0);
    			append_dev(div, t1);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div, null);
    				}
    			}

    			append_dev(div, t2);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*subtitlesOutput*/ 2 && t0_value !== (t0_value = /*subtitleData*/ ctx[25].text + "")) set_data_dev(t0, t0_value);

    			if (dirty & /*subtitlesOutput*/ 2) {
    				each_value_1 = /*subtitleData*/ ctx[25].images;
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$5(ctx, each_value_1, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_1$5(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(div, t2);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_1.length;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			destroy_each(each_blocks, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$6.name,
    		type: "each",
    		source: "(165:2) {#each subtitlesOutput as subtitleData}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$8(ctx) {
    	let div;
    	let p;
    	let t1;
    	let label0;
    	let input0;
    	let t2;
    	let br0;
    	let t3;
    	let input1;
    	let t4;
    	let button0;
    	let t6;
    	let progress_1;
    	let t7;
    	let span;
    	let t8_value = Math.round(/*progress*/ ctx[2]) + "";
    	let t8;
    	let t9;
    	let t10;
    	let t11;
    	let t12;
    	let button1;
    	let t13_value = (/*$paused*/ ctx[8] ? 'Resume' : 'Pause') + "";
    	let t13;
    	let t14;
    	let button2;
    	let t16;
    	let label1;
    	let input2;
    	let t17;
    	let t18;
    	let t19;
    	let t20;
    	let t21;
    	let t22;
    	let br1;
    	let t23;
    	let t24;
    	let t25;
    	let mounted;
    	let dispose;
    	let each_value = /*subtitlesOutput*/ ctx[1];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$6(get_each_context$6(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			p = element$1("p");
    			p.textContent = "Picture + Formatted Subtitles ||| Figure out how to use ella to make collages";
    			t1 = space();
    			label0 = element$1("label");
    			input0 = element$1("input");
    			t2 = text("\r\n    Load and play video in Youtube player (tick before load subtitles)\r\n  ");
    			br0 = element$1("br");
    			t3 = space();
    			input1 = element$1("input");
    			t4 = space();
    			button0 = element$1("button");
    			button0.textContent = "Load Subtitles";
    			t6 = space();
    			progress_1 = element$1("progress");
    			t7 = space();
    			span = element$1("span");
    			t8 = text(t8_value);
    			t9 = text("%");
    			t10 = text("\r\n  | ");
    			t11 = text(/*totalDuration*/ ctx[3]);
    			t12 = space();
    			button1 = element$1("button");
    			t13 = text(t13_value);
    			t14 = space();
    			button2 = element$1("button");
    			button2.textContent = "Restart";
    			t16 = space();
    			label1 = element$1("label");
    			input2 = element$1("input");
    			t17 = text("\r\n    Show only current subtitle");
    			t18 = text("\r\n  Title: ");
    			t19 = text(/*subtitleVideoTitle*/ ctx[6]);
    			t20 = text(" Video Time: ");
    			t21 = text(/*uiTimeStatus*/ ctx[5]);
    			t22 = space();
    			br1 = element$1("br");
    			t23 = text(" | ");
    			t24 = text(/*uistatusupdate*/ ctx[4]);
    			t25 = space();

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(p, file$8, 146, 2, 4674);
    			attr_dev(input0, "type", "checkbox");
    			add_location(input0, file$8, 148, 4, 4775);
    			add_location(label0, file$8, 147, 2, 4762);
    			add_location(br0, file$8, 150, 10, 4915);
    			attr_dev(input1, "type", "file");
    			attr_dev(input1, "accept", ".zip");
    			add_location(input1, file$8, 151, 2, 4923);
    			add_location(button0, file$8, 152, 2, 5007);
    			progress_1.value = /*progress*/ ctx[2];
    			attr_dev(progress_1, "max", "100");
    			add_location(progress_1, file$8, 153, 2, 5070);
    			add_location(span, file$8, 154, 2, 5122);
    			add_location(button1, file$8, 156, 2, 5183);
    			add_location(button2, file$8, 157, 2, 5251);
    			attr_dev(input2, "type", "checkbox");
    			add_location(input2, file$8, 159, 4, 5309);
    			add_location(label1, file$8, 158, 2, 5296);
    			add_location(br1, file$8, 162, 57, 5473);
    			attr_dev(div, "class", "borderdiv svelte-gwzbee");
    			add_location(div, file$8, 145, 0, 4647);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, p);
    			append_dev(div, t1);
    			append_dev(div, label0);
    			append_dev(label0, input0);
    			input0.checked = /*$ytsubuseplayer*/ ctx[9];
    			append_dev(label0, t2);
    			append_dev(div, br0);
    			append_dev(div, t3);
    			append_dev(div, input1);
    			append_dev(div, t4);
    			append_dev(div, button0);
    			append_dev(div, t6);
    			append_dev(div, progress_1);
    			append_dev(div, t7);
    			append_dev(div, span);
    			append_dev(span, t8);
    			append_dev(span, t9);
    			append_dev(div, t10);
    			append_dev(div, t11);
    			append_dev(div, t12);
    			append_dev(div, button1);
    			append_dev(button1, t13);
    			append_dev(div, t14);
    			append_dev(div, button2);
    			append_dev(div, t16);
    			append_dev(div, label1);
    			append_dev(label1, input2);
    			input2.checked = /*$onlyCurrentSubtitle*/ ctx[7];
    			append_dev(label1, t17);
    			append_dev(div, t18);
    			append_dev(div, t19);
    			append_dev(div, t20);
    			append_dev(div, t21);
    			append_dev(div, t22);
    			append_dev(div, br1);
    			append_dev(div, t23);
    			append_dev(div, t24);
    			append_dev(div, t25);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div, null);
    				}
    			}

    			if (!mounted) {
    				dispose = [
    					listen_dev(input0, "change", /*input0_change_handler*/ ctx[16]),
    					listen_dev(input1, "change", /*change_handler*/ ctx[17], false, false, false, false),
    					listen_dev(button0, "click", /*handleFileUpload*/ ctx[13], false, false, false, false),
    					listen_dev(button1, "click", /*pause*/ ctx[14], false, false, false, false),
    					listen_dev(button2, "click", /*reset*/ ctx[15], false, false, false, false),
    					listen_dev(input2, "change", /*input2_change_handler*/ ctx[18])
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*$ytsubuseplayer*/ 512) {
    				input0.checked = /*$ytsubuseplayer*/ ctx[9];
    			}

    			if (dirty & /*progress*/ 4) {
    				prop_dev(progress_1, "value", /*progress*/ ctx[2]);
    			}

    			if (dirty & /*progress*/ 4 && t8_value !== (t8_value = Math.round(/*progress*/ ctx[2]) + "")) set_data_dev(t8, t8_value);
    			if (dirty & /*totalDuration*/ 8) set_data_dev(t11, /*totalDuration*/ ctx[3]);
    			if (dirty & /*$paused*/ 256 && t13_value !== (t13_value = (/*$paused*/ ctx[8] ? 'Resume' : 'Pause') + "")) set_data_dev(t13, t13_value);

    			if (dirty & /*$onlyCurrentSubtitle*/ 128) {
    				input2.checked = /*$onlyCurrentSubtitle*/ ctx[7];
    			}

    			if (dirty & /*subtitleVideoTitle*/ 64) set_data_dev(t19, /*subtitleVideoTitle*/ ctx[6]);
    			if (dirty & /*uiTimeStatus*/ 32) set_data_dev(t21, /*uiTimeStatus*/ ctx[5]);
    			if (dirty & /*uistatusupdate*/ 16) set_data_dev(t24, /*uistatusupdate*/ ctx[4]);

    			if (dirty & /*subtitlesOutput*/ 2) {
    				each_value = /*subtitlesOutput*/ ctx[1];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$6(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$6(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(div, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$8.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$8($$self, $$props, $$invalidate) {
    	let $onlyCurrentSubtitle;
    	let $restart;
    	let $paused;
    	let $ytsubcurrenttext;
    	let $ytsubcurrentID;
    	let $ytsubuseplayer;
    	validate_store(ytsubcurrenttext, 'ytsubcurrenttext');
    	component_subscribe($$self, ytsubcurrenttext, $$value => $$invalidate(21, $ytsubcurrenttext = $$value));
    	validate_store(ytsubcurrentID, 'ytsubcurrentID');
    	component_subscribe($$self, ytsubcurrentID, $$value => $$invalidate(22, $ytsubcurrentID = $$value));
    	validate_store(ytsubuseplayer, 'ytsubuseplayer');
    	component_subscribe($$self, ytsubuseplayer, $$value => $$invalidate(9, $ytsubuseplayer = $$value));
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('PictureSubtitlesbasedonYTTranscript', slots, []);
    	let zipFile;
    	let subtitlesOutput = []; //writable([]);
    	let currentTime = writable(0); // Track current time
    	let paused = writable(false); // Control pause state
    	validate_store(paused, 'paused');
    	component_subscribe($$self, paused, value => $$invalidate(8, $paused = value));
    	let restart = writable(false); // Signal to restart
    	validate_store(restart, 'restart');
    	component_subscribe($$self, restart, value => $$invalidate(20, $restart = value));
    	let onlyCurrentSubtitle = writable(false); // Control subtitle display mode
    	validate_store(onlyCurrentSubtitle, 'onlyCurrentSubtitle');
    	component_subscribe($$self, onlyCurrentSubtitle, value => $$invalidate(7, $onlyCurrentSubtitle = value));
    	let progress = 0;
    	let totalDuration = 0;

    	//let useYTPlayer = writable(false);
    	let uistatusupdate = null;

    	let uiTimeStatus = 0;
    	let subtitleVideoDetailsFileData = null;
    	let subtitleVideoTitle = null;

    	async function handleFileUpload() {
    		// Reset the component state
    		$$invalidate(1, subtitlesOutput = []);

    		currentTime.set(0);
    		paused.set(false);
    		restart.set(false);
    		onlyCurrentSubtitle.set(false);
    		$$invalidate(2, progress = 0);
    		$$invalidate(3, totalDuration = 0);

    		if (!zipFile) {
    			console.log('No zip file selected');
    			return;
    		}

    		const zip = new JSZip();
    		const contents = await zip.loadAsync(zipFile);
    		console.log('Zip file loaded');
    		const subtitlesFile = await contents.file('preprocessed_subtitles.json').async('text');
    		const subtitlesVideoDetailsFile = await contents.file('YTTVideoInfo.txt');

    		if (subtitlesVideoDetailsFile) {
    			const textContent = await subtitlesVideoDetailsFile.async('text');

    			try {
    				subtitleVideoDetailsFileData = JSON.parse(textContent);
    				console.log(subtitleVideoDetailsFileData["video_id"]);

    				if ($ytsubuseplayer) {
    					set_store_value(ytsubcurrentID, $ytsubcurrentID = subtitleVideoDetailsFileData["video_id"], $ytsubcurrentID);
    				}

    				$$invalidate(6, subtitleVideoTitle = subtitleVideoDetailsFileData["title"]);
    			} catch(error) {
    				console.error('Error parsing JSON:', error);
    			}
    		} else {
    			console.error('Text file not found in the ZIP file.');
    		}

    		const preprocessedSubtitles = JSON.parse(subtitlesFile);
    		preprocessedSubtitles.sort((a, b) => a.start - b.start);
    		console.log('Subtitles parsed and sorted');
    		$$invalidate(4, uistatusupdate = 'Subtitles parsed and sorted - Syncing to time has started');
    		let localTime = 0;
    		let i = 0;

    		const displayNextSubtitle = async () => {
    			console.log('Starting displayNextSubtitle');
    			$$invalidate(3, totalDuration = preprocessedSubtitles.reduce((total, subtitle) => total + subtitle.duration, 0));

    			while (i < preprocessedSubtitles.length) {
    				const subtitle = preprocessedSubtitles[i];
    				console.log('Current subtitle:', subtitle);
    				set_store_value(ytsubcurrenttext, $ytsubcurrenttext = subtitle.text, $ytsubcurrenttext);

    				if (localTime < subtitle.start) {
    					await new Promise(resolve => setTimeout(resolve, (subtitle.start - localTime) * 1000));
    					console.log('Waited for subtitle start time');
    				}

    				if ($paused) {
    					await new Promise(resolve => paused.subscribe(value => !value && resolve()));
    					console.log('Resumed from pause');
    				}

    				if ($restart) {
    					localTime = 0;
    					i = 0;
    					$$invalidate(1, subtitlesOutput = []);
    					restart.set(false);
    					console.log('Restarted subtitles');
    					continue;
    				}

    				const images = await Promise.all(subtitle.image_paths.map(async path => URL.createObjectURL(await contents.file(path).async('blob'))));

    				if ($onlyCurrentSubtitle) {
    					$$invalidate(1, subtitlesOutput = [{ text: subtitle.text, images }]);
    				} else {
    					$$invalidate(1, subtitlesOutput = [...subtitlesOutput, { text: subtitle.text, images }]);
    				}

    				$$invalidate(2, progress = localTime / totalDuration * 100);
    				await tick();
    				console.log('Subtitle added to output:', subtitlesOutput);
    				await new Promise(resolve => setTimeout(resolve, subtitle.duration * 1000));
    				console.log('Waited for subtitle duration');
    				($$invalidate(4, uistatusupdate = 'Waited for subtitle duration'));
    				$$invalidate(5, uiTimeStatus = localTime);
    				localTime += subtitle.duration;
    				i++;
    			}

    			console.log('Finished displaying subtitles');
    		};

    		await displayNextSubtitle();
    		console.log('Finished handleFileUpload');
    	}

    	function pause() {
    		paused.update(value => !value);
    	}

    	function reset() {
    		restart.set(true);
    	}

    	function toggleSubtitleMode() {
    		onlyCurrentSubtitle.update(value => !value);
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$2.warn(`<PictureSubtitlesbasedonYTTranscript> was created with unknown prop '${key}'`);
    	});

    	function input0_change_handler() {
    		$ytsubuseplayer = this.checked;
    		ytsubuseplayer.set($ytsubuseplayer);
    	}

    	const change_handler = e => $$invalidate(0, zipFile = e.target.files[0]);

    	function input2_change_handler() {
    		$onlyCurrentSubtitle = this.checked;
    		onlyCurrentSubtitle.set($onlyCurrentSubtitle);
    	}

    	$$self.$capture_state = () => ({
    		onMount,
    		tick,
    		writable,
    		JSZip,
    		ytsubcurrenttext,
    		ytsubcurrentID,
    		ytsubuseplayer,
    		ytsubuse,
    		zipFile,
    		subtitlesOutput,
    		currentTime,
    		paused,
    		restart,
    		onlyCurrentSubtitle,
    		progress,
    		totalDuration,
    		uistatusupdate,
    		uiTimeStatus,
    		subtitleVideoDetailsFileData,
    		subtitleVideoTitle,
    		handleFileUpload,
    		pause,
    		reset,
    		toggleSubtitleMode,
    		$onlyCurrentSubtitle,
    		$restart,
    		$paused,
    		$ytsubcurrenttext,
    		$ytsubcurrentID,
    		$ytsubuseplayer
    	});

    	$$self.$inject_state = $$props => {
    		if ('zipFile' in $$props) $$invalidate(0, zipFile = $$props.zipFile);
    		if ('subtitlesOutput' in $$props) $$invalidate(1, subtitlesOutput = $$props.subtitlesOutput);
    		if ('currentTime' in $$props) currentTime = $$props.currentTime;
    		if ('paused' in $$props) $$invalidate(10, paused = $$props.paused);
    		if ('restart' in $$props) $$invalidate(11, restart = $$props.restart);
    		if ('onlyCurrentSubtitle' in $$props) $$invalidate(12, onlyCurrentSubtitle = $$props.onlyCurrentSubtitle);
    		if ('progress' in $$props) $$invalidate(2, progress = $$props.progress);
    		if ('totalDuration' in $$props) $$invalidate(3, totalDuration = $$props.totalDuration);
    		if ('uistatusupdate' in $$props) $$invalidate(4, uistatusupdate = $$props.uistatusupdate);
    		if ('uiTimeStatus' in $$props) $$invalidate(5, uiTimeStatus = $$props.uiTimeStatus);
    		if ('subtitleVideoDetailsFileData' in $$props) subtitleVideoDetailsFileData = $$props.subtitleVideoDetailsFileData;
    		if ('subtitleVideoTitle' in $$props) $$invalidate(6, subtitleVideoTitle = $$props.subtitleVideoTitle);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		zipFile,
    		subtitlesOutput,
    		progress,
    		totalDuration,
    		uistatusupdate,
    		uiTimeStatus,
    		subtitleVideoTitle,
    		$onlyCurrentSubtitle,
    		$paused,
    		$ytsubuseplayer,
    		paused,
    		restart,
    		onlyCurrentSubtitle,
    		handleFileUpload,
    		pause,
    		reset,
    		input0_change_handler,
    		change_handler,
    		input2_change_handler
    	];
    }

    class PictureSubtitlesbasedonYTTranscript extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$8, create_fragment$8, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "PictureSubtitlesbasedonYTTranscript",
    			options,
    			id: create_fragment$8.name
    		});
    	}
    }

    /* src\PSWSasspellingpractice.svelte generated by Svelte v3.59.2 */

    const file$7 = "src\\PSWSasspellingpractice.svelte";

    function get_each_context$5(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[3] = list[i];
    	child_ctx[5] = i;
    	return child_ctx;
    }

    function get_each_context_1$4(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[6] = list[i];
    	return child_ctx;
    }

    function get_each_context_2$4(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[9] = list[i];
    	return child_ctx;
    }

    // (25:8) {#if sentence}
    function create_if_block$3(ctx) {
    	let h4;
    	let t1;
    	let div;
    	let table;
    	let each_value_1 = extractLetters(/*sentence*/ ctx[3]);
    	validate_each_argument(each_value_1);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks[i] = create_each_block_1$4(get_each_context_1$4(ctx, each_value_1, i));
    	}

    	const block = {
    		c: function create() {
    			h4 = element$1("h4");
    			h4.textContent = "Extracted Letters:";
    			t1 = space();
    			div = element$1("div");
    			table = element$1("table");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(h4, file$7, 25, 10, 918);
    			add_location(table, file$7, 27, 12, 1058);
    			set_style(div, "max-height", "275px");
    			set_style(div, "max-width", "97%");
    			set_style(div, "overflow", "auto");
    			set_style(div, "display", "inline-block");
    			add_location(div, file$7, 26, 10, 957);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h4, anchor);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, div, anchor);
    			append_dev(div, table);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(table, null);
    				}
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*extractLetters, sentences*/ 2) {
    				each_value_1 = extractLetters(/*sentence*/ ctx[3]);
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$4(ctx, each_value_1, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_1$4(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(table, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_1.length;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h4);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(div);
    			destroy_each(each_blocks, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$3.name,
    		type: "if",
    		source: "(25:8) {#if sentence}",
    		ctx
    	});

    	return block;
    }

    // (31:18) {#each row as cell}
    function create_each_block_2$4(ctx) {
    	let td;
    	let t_value = /*cell*/ ctx[9] + "";
    	let t;

    	const block = {
    		c: function create() {
    			td = element$1("td");
    			t = text(t_value);
    			add_location(td, file$7, 31, 20, 1203);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, td, anchor);
    			append_dev(td, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*sentences*/ 2 && t_value !== (t_value = /*cell*/ ctx[9] + "")) set_data_dev(t, t_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(td);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_2$4.name,
    		type: "each",
    		source: "(31:18) {#each row as cell}",
    		ctx
    	});

    	return block;
    }

    // (29:14) {#each extractLetters(sentence) as row}
    function create_each_block_1$4(ctx) {
    	let tr;
    	let each_value_2 = /*row*/ ctx[6];
    	validate_each_argument(each_value_2);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_2.length; i += 1) {
    		each_blocks[i] = create_each_block_2$4(get_each_context_2$4(ctx, each_value_2, i));
    	}

    	const block = {
    		c: function create() {
    			tr = element$1("tr");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(tr, file$7, 29, 16, 1138);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, tr, anchor);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(tr, null);
    				}
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*extractLetters, sentences*/ 2) {
    				each_value_2 = /*row*/ ctx[6];
    				validate_each_argument(each_value_2);
    				let i;

    				for (i = 0; i < each_value_2.length; i += 1) {
    					const child_ctx = get_each_context_2$4(ctx, each_value_2, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_2$4(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(tr, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_2.length;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(tr);
    			destroy_each(each_blocks, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$4.name,
    		type: "each",
    		source: "(29:14) {#each extractLetters(sentence) as row}",
    		ctx
    	});

    	return block;
    }

    // (21:4) {#each sentences as sentence, index}
    function create_each_block$5(ctx) {
    	let div;
    	let h3;
    	let t0;
    	let t1_value = /*index*/ ctx[5] + 1 + "";
    	let t1;
    	let t2;
    	let t3;
    	let p;
    	let t4_value = /*sentence*/ ctx[3] + "";
    	let t4;
    	let t5;
    	let if_block = /*sentence*/ ctx[3] && create_if_block$3(ctx);

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			h3 = element$1("h3");
    			t0 = text("Sentence ");
    			t1 = text(t1_value);
    			t2 = text(":");
    			t3 = space();
    			p = element$1("p");
    			t4 = text(t4_value);
    			t5 = space();
    			if (if_block) if_block.c();
    			add_location(h3, file$7, 22, 8, 825);
    			add_location(p, file$7, 23, 8, 865);
    			add_location(div, file$7, 21, 6, 810);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, h3);
    			append_dev(h3, t0);
    			append_dev(h3, t1);
    			append_dev(h3, t2);
    			append_dev(div, t3);
    			append_dev(div, p);
    			append_dev(p, t4);
    			append_dev(div, t5);
    			if (if_block) if_block.m(div, null);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty & /*sentences*/ 2 && t4_value !== (t4_value = /*sentence*/ ctx[3] + "")) set_data_dev(t4, t4_value);

    			if (/*sentence*/ ctx[3]) {
    				if (if_block) {
    					if_block.p(ctx, dirty);
    				} else {
    					if_block = create_if_block$3(ctx);
    					if_block.c();
    					if_block.m(div, null);
    				}
    			} else if (if_block) {
    				if_block.d(1);
    				if_block = null;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			if (if_block) if_block.d();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$5.name,
    		type: "each",
    		source: "(21:4) {#each sentences as sentence, index}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$7(ctx) {
    	let div;
    	let h2;
    	let t1;
    	let textarea;
    	let t2;
    	let t3;
    	let p;
    	let mounted;
    	let dispose;
    	let each_value = /*sentences*/ ctx[1];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$5(get_each_context$5(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			h2 = element$1("h2");
    			h2.textContent = "Sentence Letter Extractor";
    			t1 = space();
    			textarea = element$1("textarea");
    			t2 = space();

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t3 = space();
    			p = element$1("p");
    			p.textContent = "Example rough prompt to claude/gpt 4 to generate image prompt - The output of a random sentence brought R b N C I f L r t n f b r, please try and make a sentence where each letter is used to make a sentence with as many nouns adjectives in it while using as few words as possible";
    			add_location(h2, file$7, 18, 4, 541);
    			set_style(textarea, "width", "95%");
    			set_style(textarea, "height", "100px");
    			attr_dev(textarea, "placeholder", "Enter sentences separated by full stops, question marks, exclamation marks, or colons");
    			add_location(textarea, file$7, 19, 4, 581);
    			add_location(p, file$7, 40, 4, 1379);
    			add_location(div, file$7, 17, 2, 530);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, h2);
    			append_dev(div, t1);
    			append_dev(div, textarea);
    			set_input_value(textarea, /*inputText*/ ctx[0]);
    			append_dev(div, t2);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div, null);
    				}
    			}

    			append_dev(div, t3);
    			append_dev(div, p);

    			if (!mounted) {
    				dispose = listen_dev(textarea, "input", /*textarea_input_handler*/ ctx[2]);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*inputText*/ 1) {
    				set_input_value(textarea, /*inputText*/ ctx[0]);
    			}

    			if (dirty & /*extractLetters, sentences*/ 2) {
    				each_value = /*sentences*/ ctx[1];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$5(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$5(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(div, t3);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$7.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function extractLetters(sentence) {
    	const words = sentence.split(' ');
    	const maxLength = Math.max(...words.map(word => word.length));
    	const result = [];

    	for (let i = 0; i < maxLength; i++) {
    		const letters = words.map(word => word[i] || '');
    		result.push(letters);
    	}

    	return result;
    }

    function instance$7($$self, $$props, $$invalidate) {
    	let sentences;
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('PSWSasspellingpractice', slots, []);
    	let inputText = '';
    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<PSWSasspellingpractice> was created with unknown prop '${key}'`);
    	});

    	function textarea_input_handler() {
    		inputText = this.value;
    		$$invalidate(0, inputText);
    	}

    	$$self.$capture_state = () => ({ inputText, extractLetters, sentences });

    	$$self.$inject_state = $$props => {
    		if ('inputText' in $$props) $$invalidate(0, inputText = $$props.inputText);
    		if ('sentences' in $$props) $$invalidate(1, sentences = $$props.sentences);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	$$self.$$.update = () => {
    		if ($$self.$$.dirty & /*inputText*/ 1) {
    			$$invalidate(1, sentences = inputText.split(/[.?!:]/).map(sentence => sentence.trim()).filter(sentence => sentence !== ''));
    		}
    	};

    	return [inputText, sentences, textarea_input_handler];
    }

    class PSWSasspellingpractice extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$7, create_fragment$7, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "PSWSasspellingpractice",
    			options,
    			id: create_fragment$7.name
    		});
    	}
    }

    /* src\ListeningPracticeandSyllableStudy.svelte generated by Svelte v3.59.2 */

    const file$6 = "src\\ListeningPracticeandSyllableStudy.svelte";

    function get_each_context$4(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[6] = list[i];
    	child_ctx[8] = i;
    	return child_ctx;
    }

    // (25:4) {#each syllableLists as syllables, index (index)}
    function create_each_block$4(key_1, ctx) {
    	let button;
    	let t0_value = /*displayTexts*/ ctx[1][/*index*/ ctx[8]] + "";
    	let t0;
    	let t1;
    	let mounted;
    	let dispose;

    	function click_handler() {
    		return /*click_handler*/ ctx[3](/*index*/ ctx[8]);
    	}

    	const block = {
    		key: key_1,
    		first: null,
    		c: function create() {
    			button = element$1("button");
    			t0 = text(t0_value);
    			t1 = space();
    			set_style(button, "cursor", "pointer");
    			add_location(button, file$6, 25, 8, 874);
    			this.first = button;
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, button, anchor);
    			append_dev(button, t0);
    			append_dev(button, t1);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", click_handler, false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;
    			if (dirty & /*displayTexts, syllableLists*/ 3 && t0_value !== (t0_value = /*displayTexts*/ ctx[1][/*index*/ ctx[8]] + "")) set_data_dev(t0, t0_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(button);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$4.name,
    		type: "each",
    		source: "(25:4) {#each syllableLists as syllables, index (index)}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$6(ctx) {
    	let main;
    	let div;
    	let t1;
    	let each_blocks = [];
    	let each_1_lookup = new Map();
    	let each_value = /*syllableLists*/ ctx[0];
    	validate_each_argument(each_value);
    	const get_key = ctx => /*index*/ ctx[8];
    	validate_each_keys(ctx, each_value, get_each_context$4, get_key);

    	for (let i = 0; i < each_value.length; i += 1) {
    		let child_ctx = get_each_context$4(ctx, each_value, i);
    		let key = get_key(child_ctx);
    		each_1_lookup.set(key, each_blocks[i] = create_each_block$4(key, child_ctx));
    	}

    	const block = {
    		c: function create() {
    			main = element$1("main");
    			div = element$1("div");
    			div.textContent = "On click will Show Next Syllable";
    			t1 = space();

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			attr_dev(div, "class", "svelte-18he4oy");
    			add_location(div, file$6, 23, 4, 766);
    			add_location(main, file$6, 22, 0, 754);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, main, anchor);
    			append_dev(main, div);
    			append_dev(main, t1);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(main, null);
    				}
    			}
    		},
    		p: function update(ctx, [dirty]) {
    			if (dirty & /*nextSyllable, syllableLists, displayTexts*/ 7) {
    				each_value = /*syllableLists*/ ctx[0];
    				validate_each_argument(each_value);
    				validate_each_keys(ctx, each_value, get_each_context$4, get_key);
    				each_blocks = update_keyed_each(each_blocks, dirty, get_key, 1, ctx, each_value, each_1_lookup, main, destroy_block, create_each_block$4, null, get_each_context$4);
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(main);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].d();
    			}
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$6.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$6($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('ListeningPracticeandSyllableStudy', slots, []);
    	let { syllableLists = [] } = $$props;
    	let currentSyllableIndices = Array(syllableLists.length).fill(0);
    	let displayTexts = syllableLists.map((list, index) => list[0]);

    	function nextSyllable(wordIndex) {
    		if (currentSyllableIndices[wordIndex] < syllableLists[wordIndex].length - 1) {
    			currentSyllableIndices[wordIndex]++;
    		} else {
    			currentSyllableIndices[wordIndex] = 0;
    		}

    		updateDisplayText(wordIndex);
    	}

    	function updateDisplayText(wordIndex) {
    		$$invalidate(1, displayTexts[wordIndex] = syllableLists[wordIndex].slice(0, currentSyllableIndices[wordIndex] + 1).join(''), displayTexts);
    	}

    	const writable_props = ['syllableLists'];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<ListeningPracticeandSyllableStudy> was created with unknown prop '${key}'`);
    	});

    	const click_handler = index => nextSyllable(index);

    	$$self.$$set = $$props => {
    		if ('syllableLists' in $$props) $$invalidate(0, syllableLists = $$props.syllableLists);
    	};

    	$$self.$capture_state = () => ({
    		syllableLists,
    		currentSyllableIndices,
    		displayTexts,
    		nextSyllable,
    		updateDisplayText
    	});

    	$$self.$inject_state = $$props => {
    		if ('syllableLists' in $$props) $$invalidate(0, syllableLists = $$props.syllableLists);
    		if ('currentSyllableIndices' in $$props) currentSyllableIndices = $$props.currentSyllableIndices;
    		if ('displayTexts' in $$props) $$invalidate(1, displayTexts = $$props.displayTexts);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [syllableLists, displayTexts, nextSyllable, click_handler];
    }

    class ListeningPracticeandSyllableStudy extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$6, create_fragment$6, safe_not_equal, { syllableLists: 0 });

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "ListeningPracticeandSyllableStudy",
    			options,
    			id: create_fragment$6.name
    		});
    	}

    	get syllableLists() {
    		throw new Error("<ListeningPracticeandSyllableStudy>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set syllableLists(value) {
    		throw new Error("<ListeningPracticeandSyllableStudy>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}
    }

    /* src\Testspace.svelte generated by Svelte v3.59.2 */

    function create_fragment$5(ctx) {
    	const block = {
    		c: noop$2,
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: noop$2,
    		p: noop$2,
    		i: noop$2,
    		o: noop$2,
    		d: noop$2
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$5.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$5($$self, $$props) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('Testspace', slots, []);
    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<Testspace> was created with unknown prop '${key}'`);
    	});

    	return [];
    }

    class Testspace extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$5, create_fragment$5, safe_not_equal, {});

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "Testspace",
    			options,
    			id: create_fragment$5.name
    		});
    	}
    }

    /**
     * @license
     * Copyright (c) 2023, Jeff Hlywa (jhlywa@gmail.com)
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions are met:
     *
     * 1. Redistributions of source code must retain the above copyright notice,
     *    this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright notice,
     *    this list of conditions and the following disclaimer in the documentation
     *    and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    const WHITE = 'w';
    const BLACK = 'b';
    const PAWN = 'p';
    const KNIGHT = 'n';
    const BISHOP = 'b';
    const ROOK = 'r';
    const QUEEN = 'q';
    const KING = 'k';
    const DEFAULT_POSITION = 'rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1';
    const EMPTY = -1;
    const FLAGS = {
        NORMAL: 'n',
        CAPTURE: 'c',
        BIG_PAWN: 'b',
        EP_CAPTURE: 'e',
        PROMOTION: 'p',
        KSIDE_CASTLE: 'k',
        QSIDE_CASTLE: 'q',
    };
    const BITS = {
        NORMAL: 1,
        CAPTURE: 2,
        BIG_PAWN: 4,
        EP_CAPTURE: 8,
        PROMOTION: 16,
        KSIDE_CASTLE: 32,
        QSIDE_CASTLE: 64,
    };
    /*
     * NOTES ABOUT 0x88 MOVE GENERATION ALGORITHM
     * ----------------------------------------------------------------------------
     * From https://github.com/jhlywa/chess.js/issues/230
     *
     * A lot of people are confused when they first see the internal representation
     * of chess.js. It uses the 0x88 Move Generation Algorithm which internally
     * stores the board as an 8x16 array. This is purely for efficiency but has a
     * couple of interesting benefits:
     *
     * 1. 0x88 offers a very inexpensive "off the board" check. Bitwise AND (&) any
     *    square with 0x88, if the result is non-zero then the square is off the
     *    board. For example, assuming a knight square A8 (0 in 0x88 notation),
     *    there are 8 possible directions in which the knight can move. These
     *    directions are relative to the 8x16 board and are stored in the
     *    PIECE_OFFSETS map. One possible move is A8 - 18 (up one square, and two
     *    squares to the left - which is off the board). 0 - 18 = -18 & 0x88 = 0x88
     *    (because of two-complement representation of -18). The non-zero result
     *    means the square is off the board and the move is illegal. Take the
     *    opposite move (from A8 to C7), 0 + 18 = 18 & 0x88 = 0. A result of zero
     *    means the square is on the board.
     *
     * 2. The relative distance (or difference) between two squares on a 8x16 board
     *    is unique and can be used to inexpensively determine if a piece on a
     *    square can attack any other arbitrary square. For example, let's see if a
     *    pawn on E7 can attack E2. The difference between E7 (20) - E2 (100) is
     *    -80. We add 119 to make the ATTACKS array index non-negative (because the
     *    worst case difference is A8 - H1 = -119). The ATTACKS array contains a
     *    bitmask of pieces that can attack from that distance and direction.
     *    ATTACKS[-80 + 119=39] gives us 24 or 0b11000 in binary. Look at the
     *    PIECE_MASKS map to determine the mask for a given piece type. In our pawn
     *    example, we would check to see if 24 & 0x1 is non-zero, which it is
     *    not. So, naturally, a pawn on E7 can't attack a piece on E2. However, a
     *    rook can since 24 & 0x8 is non-zero. The only thing left to check is that
     *    there are no blocking pieces between E7 and E2. That's where the RAYS
     *    array comes in. It provides an offset (in this case 16) to add to E7 (20)
     *    to check for blocking pieces. E7 (20) + 16 = E6 (36) + 16 = E5 (52) etc.
     */
    // prettier-ignore
    // eslint-disable-next-line
    const Ox88 = {
        a8: 0, b8: 1, c8: 2, d8: 3, e8: 4, f8: 5, g8: 6, h8: 7,
        a7: 16, b7: 17, c7: 18, d7: 19, e7: 20, f7: 21, g7: 22, h7: 23,
        a6: 32, b6: 33, c6: 34, d6: 35, e6: 36, f6: 37, g6: 38, h6: 39,
        a5: 48, b5: 49, c5: 50, d5: 51, e5: 52, f5: 53, g5: 54, h5: 55,
        a4: 64, b4: 65, c4: 66, d4: 67, e4: 68, f4: 69, g4: 70, h4: 71,
        a3: 80, b3: 81, c3: 82, d3: 83, e3: 84, f3: 85, g3: 86, h3: 87,
        a2: 96, b2: 97, c2: 98, d2: 99, e2: 100, f2: 101, g2: 102, h2: 103,
        a1: 112, b1: 113, c1: 114, d1: 115, e1: 116, f1: 117, g1: 118, h1: 119
    };
    const PAWN_OFFSETS = {
        b: [16, 32, 17, 15],
        w: [-16, -32, -17, -15],
    };
    const PIECE_OFFSETS = {
        n: [-18, -33, -31, -14, 18, 33, 31, 14],
        b: [-17, -15, 17, 15],
        r: [-16, 1, 16, -1],
        q: [-17, -16, -15, 1, 17, 16, 15, -1],
        k: [-17, -16, -15, 1, 17, 16, 15, -1],
    };
    // prettier-ignore
    const ATTACKS = [
        20, 0, 0, 0, 0, 0, 0, 24, 0, 0, 0, 0, 0, 0, 20, 0,
        0, 20, 0, 0, 0, 0, 0, 24, 0, 0, 0, 0, 0, 20, 0, 0,
        0, 0, 20, 0, 0, 0, 0, 24, 0, 0, 0, 0, 20, 0, 0, 0,
        0, 0, 0, 20, 0, 0, 0, 24, 0, 0, 0, 20, 0, 0, 0, 0,
        0, 0, 0, 0, 20, 0, 0, 24, 0, 0, 20, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 20, 2, 24, 2, 20, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 2, 53, 56, 53, 2, 0, 0, 0, 0, 0, 0,
        24, 24, 24, 24, 24, 24, 56, 0, 56, 24, 24, 24, 24, 24, 24, 0,
        0, 0, 0, 0, 0, 2, 53, 56, 53, 2, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 20, 2, 24, 2, 20, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 20, 0, 0, 24, 0, 0, 20, 0, 0, 0, 0, 0,
        0, 0, 0, 20, 0, 0, 0, 24, 0, 0, 0, 20, 0, 0, 0, 0,
        0, 0, 20, 0, 0, 0, 0, 24, 0, 0, 0, 0, 20, 0, 0, 0,
        0, 20, 0, 0, 0, 0, 0, 24, 0, 0, 0, 0, 0, 20, 0, 0,
        20, 0, 0, 0, 0, 0, 0, 24, 0, 0, 0, 0, 0, 0, 20
    ];
    // prettier-ignore
    const RAYS = [
        17, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 15, 0,
        0, 17, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 15, 0, 0,
        0, 0, 17, 0, 0, 0, 0, 16, 0, 0, 0, 0, 15, 0, 0, 0,
        0, 0, 0, 17, 0, 0, 0, 16, 0, 0, 0, 15, 0, 0, 0, 0,
        0, 0, 0, 0, 17, 0, 0, 16, 0, 0, 15, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 17, 0, 16, 0, 15, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 17, 16, 15, 0, 0, 0, 0, 0, 0, 0,
        1, 1, 1, 1, 1, 1, 1, 0, -1, -1, -1, -1, -1, -1, -1, 0,
        0, 0, 0, 0, 0, 0, -15, -16, -17, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, -15, 0, -16, 0, -17, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, -15, 0, 0, -16, 0, 0, -17, 0, 0, 0, 0, 0,
        0, 0, 0, -15, 0, 0, 0, -16, 0, 0, 0, -17, 0, 0, 0, 0,
        0, 0, -15, 0, 0, 0, 0, -16, 0, 0, 0, 0, -17, 0, 0, 0,
        0, -15, 0, 0, 0, 0, 0, -16, 0, 0, 0, 0, 0, -17, 0, 0,
        -15, 0, 0, 0, 0, 0, 0, -16, 0, 0, 0, 0, 0, 0, -17
    ];
    const PIECE_MASKS = { p: 0x1, n: 0x2, b: 0x4, r: 0x8, q: 0x10, k: 0x20 };
    const SYMBOLS = 'pnbrqkPNBRQK';
    const PROMOTIONS = [KNIGHT, BISHOP, ROOK, QUEEN];
    const RANK_1 = 7;
    const RANK_2 = 6;
    /*
     * const RANK_3 = 5
     * const RANK_4 = 4
     * const RANK_5 = 3
     * const RANK_6 = 2
     */
    const RANK_7 = 1;
    const RANK_8 = 0;
    const SIDES = {
        [KING]: BITS.KSIDE_CASTLE,
        [QUEEN]: BITS.QSIDE_CASTLE,
    };
    const ROOKS = {
        w: [
            { square: Ox88.a1, flag: BITS.QSIDE_CASTLE },
            { square: Ox88.h1, flag: BITS.KSIDE_CASTLE },
        ],
        b: [
            { square: Ox88.a8, flag: BITS.QSIDE_CASTLE },
            { square: Ox88.h8, flag: BITS.KSIDE_CASTLE },
        ],
    };
    const SECOND_RANK = { b: RANK_7, w: RANK_2 };
    const TERMINATION_MARKERS = ['1-0', '0-1', '1/2-1/2', '*'];
    // Extracts the zero-based rank of an 0x88 square.
    function rank(square) {
        return square >> 4;
    }
    // Extracts the zero-based file of an 0x88 square.
    function file$5(square) {
        return square & 0xf;
    }
    function isDigit(c) {
        return '0123456789'.indexOf(c) !== -1;
    }
    // Converts a 0x88 square to algebraic notation.
    function algebraic(square) {
        const f = file$5(square);
        const r = rank(square);
        return ('abcdefgh'.substring(f, f + 1) +
            '87654321'.substring(r, r + 1));
    }
    function swapColor(color) {
        return color === WHITE ? BLACK : WHITE;
    }
    function validateFen(fen) {
        // 1st criterion: 6 space-seperated fields?
        const tokens = fen.split(/\s+/);
        if (tokens.length !== 6) {
            return {
                ok: false,
                error: 'Invalid FEN: must contain six space-delimited fields',
            };
        }
        // 2nd criterion: move number field is a integer value > 0?
        const moveNumber = parseInt(tokens[5], 10);
        if (isNaN(moveNumber) || moveNumber <= 0) {
            return {
                ok: false,
                error: 'Invalid FEN: move number must be a positive integer',
            };
        }
        // 3rd criterion: half move counter is an integer >= 0?
        const halfMoves = parseInt(tokens[4], 10);
        if (isNaN(halfMoves) || halfMoves < 0) {
            return {
                ok: false,
                error: 'Invalid FEN: half move counter number must be a non-negative integer',
            };
        }
        // 4th criterion: 4th field is a valid e.p.-string?
        if (!/^(-|[abcdefgh][36])$/.test(tokens[3])) {
            return { ok: false, error: 'Invalid FEN: en-passant square is invalid' };
        }
        // 5th criterion: 3th field is a valid castle-string?
        if (/[^kKqQ-]/.test(tokens[2])) {
            return { ok: false, error: 'Invalid FEN: castling availability is invalid' };
        }
        // 6th criterion: 2nd field is "w" (white) or "b" (black)?
        if (!/^(w|b)$/.test(tokens[1])) {
            return { ok: false, error: 'Invalid FEN: side-to-move is invalid' };
        }
        // 7th criterion: 1st field contains 8 rows?
        const rows = tokens[0].split('/');
        if (rows.length !== 8) {
            return {
                ok: false,
                error: "Invalid FEN: piece data does not contain 8 '/'-delimited rows",
            };
        }
        // 8th criterion: every row is valid?
        for (let i = 0; i < rows.length; i++) {
            // check for right sum of fields AND not two numbers in succession
            let sumFields = 0;
            let previousWasNumber = false;
            for (let k = 0; k < rows[i].length; k++) {
                if (isDigit(rows[i][k])) {
                    if (previousWasNumber) {
                        return {
                            ok: false,
                            error: 'Invalid FEN: piece data is invalid (consecutive number)',
                        };
                    }
                    sumFields += parseInt(rows[i][k], 10);
                    previousWasNumber = true;
                }
                else {
                    if (!/^[prnbqkPRNBQK]$/.test(rows[i][k])) {
                        return {
                            ok: false,
                            error: 'Invalid FEN: piece data is invalid (invalid piece)',
                        };
                    }
                    sumFields += 1;
                    previousWasNumber = false;
                }
            }
            if (sumFields !== 8) {
                return {
                    ok: false,
                    error: 'Invalid FEN: piece data is invalid (too many squares in rank)',
                };
            }
        }
        // 9th criterion: is en-passant square legal?
        if ((tokens[3][1] == '3' && tokens[1] == 'w') ||
            (tokens[3][1] == '6' && tokens[1] == 'b')) {
            return { ok: false, error: 'Invalid FEN: illegal en-passant square' };
        }
        // 10th criterion: does chess position contain exact two kings?
        const kings = [
            { color: 'white', regex: /K/g },
            { color: 'black', regex: /k/g },
        ];
        for (const { color, regex } of kings) {
            if (!regex.test(tokens[0])) {
                return { ok: false, error: `Invalid FEN: missing ${color} king` };
            }
            if ((tokens[0].match(regex) || []).length > 1) {
                return { ok: false, error: `Invalid FEN: too many ${color} kings` };
            }
        }
        // 11th criterion: are any pawns on the first or eighth rows?
        if (Array.from(rows[0] + rows[7]).some((char) => char.toUpperCase() === 'P')) {
            return {
                ok: false,
                error: 'Invalid FEN: some pawns are on the edge rows',
            };
        }
        return { ok: true };
    }
    // this function is used to uniquely identify ambiguous moves
    function getDisambiguator(move, moves) {
        const from = move.from;
        const to = move.to;
        const piece = move.piece;
        let ambiguities = 0;
        let sameRank = 0;
        let sameFile = 0;
        for (let i = 0, len = moves.length; i < len; i++) {
            const ambigFrom = moves[i].from;
            const ambigTo = moves[i].to;
            const ambigPiece = moves[i].piece;
            /*
             * if a move of the same piece type ends on the same to square, we'll need
             * to add a disambiguator to the algebraic notation
             */
            if (piece === ambigPiece && from !== ambigFrom && to === ambigTo) {
                ambiguities++;
                if (rank(from) === rank(ambigFrom)) {
                    sameRank++;
                }
                if (file$5(from) === file$5(ambigFrom)) {
                    sameFile++;
                }
            }
        }
        if (ambiguities > 0) {
            if (sameRank > 0 && sameFile > 0) {
                /*
                 * if there exists a similar moving piece on the same rank and file as
                 * the move in question, use the square as the disambiguator
                 */
                return algebraic(from);
            }
            else if (sameFile > 0) {
                /*
                 * if the moving piece rests on the same file, use the rank symbol as the
                 * disambiguator
                 */
                return algebraic(from).charAt(1);
            }
            else {
                // else use the file symbol
                return algebraic(from).charAt(0);
            }
        }
        return '';
    }
    function addMove(moves, color, from, to, piece, captured = undefined, flags = BITS.NORMAL) {
        const r = rank(to);
        if (piece === PAWN && (r === RANK_1 || r === RANK_8)) {
            for (let i = 0; i < PROMOTIONS.length; i++) {
                const promotion = PROMOTIONS[i];
                moves.push({
                    color,
                    from,
                    to,
                    piece,
                    captured,
                    promotion,
                    flags: flags | BITS.PROMOTION,
                });
            }
        }
        else {
            moves.push({
                color,
                from,
                to,
                piece,
                captured,
                flags,
            });
        }
    }
    function inferPieceType(san) {
        let pieceType = san.charAt(0);
        if (pieceType >= 'a' && pieceType <= 'h') {
            const matches = san.match(/[a-h]\d.*[a-h]\d/);
            if (matches) {
                return undefined;
            }
            return PAWN;
        }
        pieceType = pieceType.toLowerCase();
        if (pieceType === 'o') {
            return KING;
        }
        return pieceType;
    }
    // parses all of the decorators out of a SAN string
    function strippedSan(move) {
        return move.replace(/=/, '').replace(/[+#]?[?!]*$/, '');
    }
    function trimFen(fen) {
        /*
         * remove last two fields in FEN string as they're not needed when checking
         * for repetition
         */
        return fen.split(' ').slice(0, 4).join(' ');
    }
    class Chess {
        _board = new Array(128);
        _turn = WHITE;
        _header = {};
        _kings = { w: EMPTY, b: EMPTY };
        _epSquare = -1;
        _halfMoves = 0;
        _moveNumber = 0;
        _history = [];
        _comments = {};
        _castling = { w: 0, b: 0 };
        // tracks number of times a position has been seen for repetition checking
        _positionCount = {};
        constructor(fen = DEFAULT_POSITION) {
            this.load(fen);
        }
        clear({ preserveHeaders = false } = {}) {
            this._board = new Array(128);
            this._kings = { w: EMPTY, b: EMPTY };
            this._turn = WHITE;
            this._castling = { w: 0, b: 0 };
            this._epSquare = EMPTY;
            this._halfMoves = 0;
            this._moveNumber = 1;
            this._history = [];
            this._comments = {};
            this._header = preserveHeaders ? this._header : {};
            this._positionCount = {};
            /*
             * Delete the SetUp and FEN headers (if preserved), the board is empty and
             * these headers don't make sense in this state. They'll get added later
             * via .load() or .put()
             */
            delete this._header['SetUp'];
            delete this._header['FEN'];
        }
        removeHeader(key) {
            if (key in this._header) {
                delete this._header[key];
            }
        }
        load(fen, { skipValidation = false, preserveHeaders = false } = {}) {
            let tokens = fen.split(/\s+/);
            // append commonly omitted fen tokens
            if (tokens.length >= 2 && tokens.length < 6) {
                const adjustments = ['-', '-', '0', '1'];
                fen = tokens.concat(adjustments.slice(-(6 - tokens.length))).join(' ');
            }
            tokens = fen.split(/\s+/);
            if (!skipValidation) {
                const { ok, error } = validateFen(fen);
                if (!ok) {
                    throw new Error(error);
                }
            }
            const position = tokens[0];
            let square = 0;
            this.clear({ preserveHeaders });
            for (let i = 0; i < position.length; i++) {
                const piece = position.charAt(i);
                if (piece === '/') {
                    square += 8;
                }
                else if (isDigit(piece)) {
                    square += parseInt(piece, 10);
                }
                else {
                    const color = piece < 'a' ? WHITE : BLACK;
                    this._put({ type: piece.toLowerCase(), color }, algebraic(square));
                    square++;
                }
            }
            this._turn = tokens[1];
            if (tokens[2].indexOf('K') > -1) {
                this._castling.w |= BITS.KSIDE_CASTLE;
            }
            if (tokens[2].indexOf('Q') > -1) {
                this._castling.w |= BITS.QSIDE_CASTLE;
            }
            if (tokens[2].indexOf('k') > -1) {
                this._castling.b |= BITS.KSIDE_CASTLE;
            }
            if (tokens[2].indexOf('q') > -1) {
                this._castling.b |= BITS.QSIDE_CASTLE;
            }
            this._epSquare = tokens[3] === '-' ? EMPTY : Ox88[tokens[3]];
            this._halfMoves = parseInt(tokens[4], 10);
            this._moveNumber = parseInt(tokens[5], 10);
            this._updateSetup(fen);
            this._incPositionCount(fen);
        }
        fen() {
            let empty = 0;
            let fen = '';
            for (let i = Ox88.a8; i <= Ox88.h1; i++) {
                if (this._board[i]) {
                    if (empty > 0) {
                        fen += empty;
                        empty = 0;
                    }
                    const { color, type: piece } = this._board[i];
                    fen += color === WHITE ? piece.toUpperCase() : piece.toLowerCase();
                }
                else {
                    empty++;
                }
                if ((i + 1) & 0x88) {
                    if (empty > 0) {
                        fen += empty;
                    }
                    if (i !== Ox88.h1) {
                        fen += '/';
                    }
                    empty = 0;
                    i += 8;
                }
            }
            let castling = '';
            if (this._castling[WHITE] & BITS.KSIDE_CASTLE) {
                castling += 'K';
            }
            if (this._castling[WHITE] & BITS.QSIDE_CASTLE) {
                castling += 'Q';
            }
            if (this._castling[BLACK] & BITS.KSIDE_CASTLE) {
                castling += 'k';
            }
            if (this._castling[BLACK] & BITS.QSIDE_CASTLE) {
                castling += 'q';
            }
            // do we have an empty castling flag?
            castling = castling || '-';
            let epSquare = '-';
            /*
             * only print the ep square if en passant is a valid move (pawn is present
             * and ep capture is not pinned)
             */
            if (this._epSquare !== EMPTY) {
                const bigPawnSquare = this._epSquare + (this._turn === WHITE ? 16 : -16);
                const squares = [bigPawnSquare + 1, bigPawnSquare - 1];
                for (const square of squares) {
                    // is the square off the board?
                    if (square & 0x88) {
                        continue;
                    }
                    const color = this._turn;
                    // is there a pawn that can capture the epSquare?
                    if (this._board[square]?.color === color &&
                        this._board[square]?.type === PAWN) {
                        // if the pawn makes an ep capture, does it leave it's king in check?
                        this._makeMove({
                            color,
                            from: square,
                            to: this._epSquare,
                            piece: PAWN,
                            captured: PAWN,
                            flags: BITS.EP_CAPTURE,
                        });
                        const isLegal = !this._isKingAttacked(color);
                        this._undoMove();
                        // if ep is legal, break and set the ep square in the FEN output
                        if (isLegal) {
                            epSquare = algebraic(this._epSquare);
                            break;
                        }
                    }
                }
            }
            return [
                fen,
                this._turn,
                castling,
                epSquare,
                this._halfMoves,
                this._moveNumber,
            ].join(' ');
        }
        /*
         * Called when the initial board setup is changed with put() or remove().
         * modifies the SetUp and FEN properties of the header object. If the FEN
         * is equal to the default position, the SetUp and FEN are deleted the setup
         * is only updated if history.length is zero, ie moves haven't been made.
         */
        _updateSetup(fen) {
            if (this._history.length > 0)
                return;
            if (fen !== DEFAULT_POSITION) {
                this._header['SetUp'] = '1';
                this._header['FEN'] = fen;
            }
            else {
                delete this._header['SetUp'];
                delete this._header['FEN'];
            }
        }
        reset() {
            this.load(DEFAULT_POSITION);
        }
        get(square) {
            return this._board[Ox88[square]] || false;
        }
        put({ type, color }, square) {
            if (this._put({ type, color }, square)) {
                this._updateCastlingRights();
                this._updateEnPassantSquare();
                this._updateSetup(this.fen());
                return true;
            }
            return false;
        }
        _put({ type, color }, square) {
            // check for piece
            if (SYMBOLS.indexOf(type.toLowerCase()) === -1) {
                return false;
            }
            // check for valid square
            if (!(square in Ox88)) {
                return false;
            }
            const sq = Ox88[square];
            // don't let the user place more than one king
            if (type == KING &&
                !(this._kings[color] == EMPTY || this._kings[color] == sq)) {
                return false;
            }
            const currentPieceOnSquare = this._board[sq];
            // if one of the kings will be replaced by the piece from args, set the `_kings` respective entry to `EMPTY`
            if (currentPieceOnSquare && currentPieceOnSquare.type === KING) {
                this._kings[currentPieceOnSquare.color] = EMPTY;
            }
            this._board[sq] = { type: type, color: color };
            if (type === KING) {
                this._kings[color] = sq;
            }
            return true;
        }
        remove(square) {
            const piece = this.get(square);
            delete this._board[Ox88[square]];
            if (piece && piece.type === KING) {
                this._kings[piece.color] = EMPTY;
            }
            this._updateCastlingRights();
            this._updateEnPassantSquare();
            this._updateSetup(this.fen());
            return piece;
        }
        _updateCastlingRights() {
            const whiteKingInPlace = this._board[Ox88.e1]?.type === KING &&
                this._board[Ox88.e1]?.color === WHITE;
            const blackKingInPlace = this._board[Ox88.e8]?.type === KING &&
                this._board[Ox88.e8]?.color === BLACK;
            if (!whiteKingInPlace ||
                this._board[Ox88.a1]?.type !== ROOK ||
                this._board[Ox88.a1]?.color !== WHITE) {
                this._castling.w &= ~BITS.QSIDE_CASTLE;
            }
            if (!whiteKingInPlace ||
                this._board[Ox88.h1]?.type !== ROOK ||
                this._board[Ox88.h1]?.color !== WHITE) {
                this._castling.w &= ~BITS.KSIDE_CASTLE;
            }
            if (!blackKingInPlace ||
                this._board[Ox88.a8]?.type !== ROOK ||
                this._board[Ox88.a8]?.color !== BLACK) {
                this._castling.b &= ~BITS.QSIDE_CASTLE;
            }
            if (!blackKingInPlace ||
                this._board[Ox88.h8]?.type !== ROOK ||
                this._board[Ox88.h8]?.color !== BLACK) {
                this._castling.b &= ~BITS.KSIDE_CASTLE;
            }
        }
        _updateEnPassantSquare() {
            if (this._epSquare === EMPTY) {
                return;
            }
            const startSquare = this._epSquare + (this._turn === WHITE ? -16 : 16);
            const currentSquare = this._epSquare + (this._turn === WHITE ? 16 : -16);
            const attackers = [currentSquare + 1, currentSquare - 1];
            if (this._board[startSquare] !== null ||
                this._board[this._epSquare] !== null ||
                this._board[currentSquare]?.color !== swapColor(this._turn) ||
                this._board[currentSquare]?.type !== PAWN) {
                this._epSquare = EMPTY;
                return;
            }
            const canCapture = (square) => !(square & 0x88) &&
                this._board[square]?.color === this._turn &&
                this._board[square]?.type === PAWN;
            if (!attackers.some(canCapture)) {
                this._epSquare = EMPTY;
            }
        }
        _attacked(color, square) {
            for (let i = Ox88.a8; i <= Ox88.h1; i++) {
                // did we run off the end of the board
                if (i & 0x88) {
                    i += 7;
                    continue;
                }
                // if empty square or wrong color
                if (this._board[i] === undefined || this._board[i].color !== color) {
                    continue;
                }
                const piece = this._board[i];
                const difference = i - square;
                // skip - to/from square are the same
                if (difference === 0) {
                    continue;
                }
                const index = difference + 119;
                if (ATTACKS[index] & PIECE_MASKS[piece.type]) {
                    if (piece.type === PAWN) {
                        if (difference > 0) {
                            if (piece.color === WHITE)
                                return true;
                        }
                        else {
                            if (piece.color === BLACK)
                                return true;
                        }
                        continue;
                    }
                    // if the piece is a knight or a king
                    if (piece.type === 'n' || piece.type === 'k')
                        return true;
                    const offset = RAYS[index];
                    let j = i + offset;
                    let blocked = false;
                    while (j !== square) {
                        if (this._board[j] != null) {
                            blocked = true;
                            break;
                        }
                        j += offset;
                    }
                    if (!blocked)
                        return true;
                }
            }
            return false;
        }
        _isKingAttacked(color) {
            const square = this._kings[color];
            return square === -1 ? false : this._attacked(swapColor(color), square);
        }
        isAttacked(square, attackedBy) {
            return this._attacked(attackedBy, Ox88[square]);
        }
        isCheck() {
            return this._isKingAttacked(this._turn);
        }
        inCheck() {
            return this.isCheck();
        }
        isCheckmate() {
            return this.isCheck() && this._moves().length === 0;
        }
        isStalemate() {
            return !this.isCheck() && this._moves().length === 0;
        }
        isInsufficientMaterial() {
            /*
             * k.b. vs k.b. (of opposite colors) with mate in 1:
             * 8/8/8/8/1b6/8/B1k5/K7 b - - 0 1
             *
             * k.b. vs k.n. with mate in 1:
             * 8/8/8/8/1n6/8/B7/K1k5 b - - 2 1
             */
            const pieces = {
                b: 0,
                n: 0,
                r: 0,
                q: 0,
                k: 0,
                p: 0,
            };
            const bishops = [];
            let numPieces = 0;
            let squareColor = 0;
            for (let i = Ox88.a8; i <= Ox88.h1; i++) {
                squareColor = (squareColor + 1) % 2;
                if (i & 0x88) {
                    i += 7;
                    continue;
                }
                const piece = this._board[i];
                if (piece) {
                    pieces[piece.type] = piece.type in pieces ? pieces[piece.type] + 1 : 1;
                    if (piece.type === BISHOP) {
                        bishops.push(squareColor);
                    }
                    numPieces++;
                }
            }
            // k vs. k
            if (numPieces === 2) {
                return true;
            }
            else if (
            // k vs. kn .... or .... k vs. kb
            numPieces === 3 &&
                (pieces[BISHOP] === 1 || pieces[KNIGHT] === 1)) {
                return true;
            }
            else if (numPieces === pieces[BISHOP] + 2) {
                // kb vs. kb where any number of bishops are all on the same color
                let sum = 0;
                const len = bishops.length;
                for (let i = 0; i < len; i++) {
                    sum += bishops[i];
                }
                if (sum === 0 || sum === len) {
                    return true;
                }
            }
            return false;
        }
        isThreefoldRepetition() {
            return this._getPositionCount(this.fen()) >= 3;
        }
        isDraw() {
            return (this._halfMoves >= 100 || // 50 moves per side = 100 half moves
                this.isStalemate() ||
                this.isInsufficientMaterial() ||
                this.isThreefoldRepetition());
        }
        isGameOver() {
            return this.isCheckmate() || this.isStalemate() || this.isDraw();
        }
        moves({ verbose = false, square = undefined, piece = undefined, } = {}) {
            const moves = this._moves({ square, piece });
            if (verbose) {
                return moves.map((move) => this._makePretty(move));
            }
            else {
                return moves.map((move) => this._moveToSan(move, moves));
            }
        }
        _moves({ legal = true, piece = undefined, square = undefined, } = {}) {
            const forSquare = square ? square.toLowerCase() : undefined;
            const forPiece = piece?.toLowerCase();
            const moves = [];
            const us = this._turn;
            const them = swapColor(us);
            let firstSquare = Ox88.a8;
            let lastSquare = Ox88.h1;
            let singleSquare = false;
            // are we generating moves for a single square?
            if (forSquare) {
                // illegal square, return empty moves
                if (!(forSquare in Ox88)) {
                    return [];
                }
                else {
                    firstSquare = lastSquare = Ox88[forSquare];
                    singleSquare = true;
                }
            }
            for (let from = firstSquare; from <= lastSquare; from++) {
                // did we run off the end of the board
                if (from & 0x88) {
                    from += 7;
                    continue;
                }
                // empty square or opponent, skip
                if (!this._board[from] || this._board[from].color === them) {
                    continue;
                }
                const { type } = this._board[from];
                let to;
                if (type === PAWN) {
                    if (forPiece && forPiece !== type)
                        continue;
                    // single square, non-capturing
                    to = from + PAWN_OFFSETS[us][0];
                    if (!this._board[to]) {
                        addMove(moves, us, from, to, PAWN);
                        // double square
                        to = from + PAWN_OFFSETS[us][1];
                        if (SECOND_RANK[us] === rank(from) && !this._board[to]) {
                            addMove(moves, us, from, to, PAWN, undefined, BITS.BIG_PAWN);
                        }
                    }
                    // pawn captures
                    for (let j = 2; j < 4; j++) {
                        to = from + PAWN_OFFSETS[us][j];
                        if (to & 0x88)
                            continue;
                        if (this._board[to]?.color === them) {
                            addMove(moves, us, from, to, PAWN, this._board[to].type, BITS.CAPTURE);
                        }
                        else if (to === this._epSquare) {
                            addMove(moves, us, from, to, PAWN, PAWN, BITS.EP_CAPTURE);
                        }
                    }
                }
                else {
                    if (forPiece && forPiece !== type)
                        continue;
                    for (let j = 0, len = PIECE_OFFSETS[type].length; j < len; j++) {
                        const offset = PIECE_OFFSETS[type][j];
                        to = from;
                        while (true) {
                            to += offset;
                            if (to & 0x88)
                                break;
                            if (!this._board[to]) {
                                addMove(moves, us, from, to, type);
                            }
                            else {
                                // own color, stop loop
                                if (this._board[to].color === us)
                                    break;
                                addMove(moves, us, from, to, type, this._board[to].type, BITS.CAPTURE);
                                break;
                            }
                            /* break, if knight or king */
                            if (type === KNIGHT || type === KING)
                                break;
                        }
                    }
                }
            }
            /*
             * check for castling if we're:
             *   a) generating all moves, or
             *   b) doing single square move generation on the king's square
             */
            if (forPiece === undefined || forPiece === KING) {
                if (!singleSquare || lastSquare === this._kings[us]) {
                    // king-side castling
                    if (this._castling[us] & BITS.KSIDE_CASTLE) {
                        const castlingFrom = this._kings[us];
                        const castlingTo = castlingFrom + 2;
                        if (!this._board[castlingFrom + 1] &&
                            !this._board[castlingTo] &&
                            !this._attacked(them, this._kings[us]) &&
                            !this._attacked(them, castlingFrom + 1) &&
                            !this._attacked(them, castlingTo)) {
                            addMove(moves, us, this._kings[us], castlingTo, KING, undefined, BITS.KSIDE_CASTLE);
                        }
                    }
                    // queen-side castling
                    if (this._castling[us] & BITS.QSIDE_CASTLE) {
                        const castlingFrom = this._kings[us];
                        const castlingTo = castlingFrom - 2;
                        if (!this._board[castlingFrom - 1] &&
                            !this._board[castlingFrom - 2] &&
                            !this._board[castlingFrom - 3] &&
                            !this._attacked(them, this._kings[us]) &&
                            !this._attacked(them, castlingFrom - 1) &&
                            !this._attacked(them, castlingTo)) {
                            addMove(moves, us, this._kings[us], castlingTo, KING, undefined, BITS.QSIDE_CASTLE);
                        }
                    }
                }
            }
            /*
             * return all pseudo-legal moves (this includes moves that allow the king
             * to be captured)
             */
            if (!legal || this._kings[us] === -1) {
                return moves;
            }
            // filter out illegal moves
            const legalMoves = [];
            for (let i = 0, len = moves.length; i < len; i++) {
                this._makeMove(moves[i]);
                if (!this._isKingAttacked(us)) {
                    legalMoves.push(moves[i]);
                }
                this._undoMove();
            }
            return legalMoves;
        }
        move(move, { strict = false } = {}) {
            /*
             * The move function can be called with in the following parameters:
             *
             * .move('Nxb7')       <- argument is a case-sensitive SAN string
             *
             * .move({ from: 'h7', <- argument is a move object
             *         to :'h8',
             *         promotion: 'q' })
             *
             *
             * An optional strict argument may be supplied to tell chess.js to
             * strictly follow the SAN specification.
             */
            let moveObj = null;
            if (typeof move === 'string') {
                moveObj = this._moveFromSan(move, strict);
            }
            else if (typeof move === 'object') {
                const moves = this._moves();
                // convert the pretty move object to an ugly move object
                for (let i = 0, len = moves.length; i < len; i++) {
                    if (move.from === algebraic(moves[i].from) &&
                        move.to === algebraic(moves[i].to) &&
                        (!('promotion' in moves[i]) || move.promotion === moves[i].promotion)) {
                        moveObj = moves[i];
                        break;
                    }
                }
            }
            // failed to find move
            if (!moveObj) {
                if (typeof move === 'string') {
                    throw new Error(`Invalid move: ${move}`);
                }
                else {
                    throw new Error(`Invalid move: ${JSON.stringify(move)}`);
                }
            }
            /*
             * need to make a copy of move because we can't generate SAN after the move
             * is made
             */
            const prettyMove = this._makePretty(moveObj);
            this._makeMove(moveObj);
            this._incPositionCount(prettyMove.after);
            return prettyMove;
        }
        _push(move) {
            this._history.push({
                move,
                kings: { b: this._kings.b, w: this._kings.w },
                turn: this._turn,
                castling: { b: this._castling.b, w: this._castling.w },
                epSquare: this._epSquare,
                halfMoves: this._halfMoves,
                moveNumber: this._moveNumber,
            });
        }
        _makeMove(move) {
            const us = this._turn;
            const them = swapColor(us);
            this._push(move);
            this._board[move.to] = this._board[move.from];
            delete this._board[move.from];
            // if ep capture, remove the captured pawn
            if (move.flags & BITS.EP_CAPTURE) {
                if (this._turn === BLACK) {
                    delete this._board[move.to - 16];
                }
                else {
                    delete this._board[move.to + 16];
                }
            }
            // if pawn promotion, replace with new piece
            if (move.promotion) {
                this._board[move.to] = { type: move.promotion, color: us };
            }
            // if we moved the king
            if (this._board[move.to].type === KING) {
                this._kings[us] = move.to;
                // if we castled, move the rook next to the king
                if (move.flags & BITS.KSIDE_CASTLE) {
                    const castlingTo = move.to - 1;
                    const castlingFrom = move.to + 1;
                    this._board[castlingTo] = this._board[castlingFrom];
                    delete this._board[castlingFrom];
                }
                else if (move.flags & BITS.QSIDE_CASTLE) {
                    const castlingTo = move.to + 1;
                    const castlingFrom = move.to - 2;
                    this._board[castlingTo] = this._board[castlingFrom];
                    delete this._board[castlingFrom];
                }
                // turn off castling
                this._castling[us] = 0;
            }
            // turn off castling if we move a rook
            if (this._castling[us]) {
                for (let i = 0, len = ROOKS[us].length; i < len; i++) {
                    if (move.from === ROOKS[us][i].square &&
                        this._castling[us] & ROOKS[us][i].flag) {
                        this._castling[us] ^= ROOKS[us][i].flag;
                        break;
                    }
                }
            }
            // turn off castling if we capture a rook
            if (this._castling[them]) {
                for (let i = 0, len = ROOKS[them].length; i < len; i++) {
                    if (move.to === ROOKS[them][i].square &&
                        this._castling[them] & ROOKS[them][i].flag) {
                        this._castling[them] ^= ROOKS[them][i].flag;
                        break;
                    }
                }
            }
            // if big pawn move, update the en passant square
            if (move.flags & BITS.BIG_PAWN) {
                if (us === BLACK) {
                    this._epSquare = move.to - 16;
                }
                else {
                    this._epSquare = move.to + 16;
                }
            }
            else {
                this._epSquare = EMPTY;
            }
            // reset the 50 move counter if a pawn is moved or a piece is captured
            if (move.piece === PAWN) {
                this._halfMoves = 0;
            }
            else if (move.flags & (BITS.CAPTURE | BITS.EP_CAPTURE)) {
                this._halfMoves = 0;
            }
            else {
                this._halfMoves++;
            }
            if (us === BLACK) {
                this._moveNumber++;
            }
            this._turn = them;
        }
        undo() {
            const move = this._undoMove();
            if (move) {
                const prettyMove = this._makePretty(move);
                this._decPositionCount(prettyMove.after);
                return prettyMove;
            }
            return null;
        }
        _undoMove() {
            const old = this._history.pop();
            if (old === undefined) {
                return null;
            }
            const move = old.move;
            this._kings = old.kings;
            this._turn = old.turn;
            this._castling = old.castling;
            this._epSquare = old.epSquare;
            this._halfMoves = old.halfMoves;
            this._moveNumber = old.moveNumber;
            const us = this._turn;
            const them = swapColor(us);
            this._board[move.from] = this._board[move.to];
            this._board[move.from].type = move.piece; // to undo any promotions
            delete this._board[move.to];
            if (move.captured) {
                if (move.flags & BITS.EP_CAPTURE) {
                    // en passant capture
                    let index;
                    if (us === BLACK) {
                        index = move.to - 16;
                    }
                    else {
                        index = move.to + 16;
                    }
                    this._board[index] = { type: PAWN, color: them };
                }
                else {
                    // regular capture
                    this._board[move.to] = { type: move.captured, color: them };
                }
            }
            if (move.flags & (BITS.KSIDE_CASTLE | BITS.QSIDE_CASTLE)) {
                let castlingTo, castlingFrom;
                if (move.flags & BITS.KSIDE_CASTLE) {
                    castlingTo = move.to + 1;
                    castlingFrom = move.to - 1;
                }
                else {
                    castlingTo = move.to - 2;
                    castlingFrom = move.to + 1;
                }
                this._board[castlingTo] = this._board[castlingFrom];
                delete this._board[castlingFrom];
            }
            return move;
        }
        pgn({ newline = '\n', maxWidth = 0, } = {}) {
            /*
             * using the specification from http://www.chessclub.com/help/PGN-spec
             * example for html usage: .pgn({ max_width: 72, newline_char: "<br />" })
             */
            const result = [];
            let headerExists = false;
            /* add the PGN header information */
            for (const i in this._header) {
                /*
                 * TODO: order of enumerated properties in header object is not
                 * guaranteed, see ECMA-262 spec (section 12.6.4)
                 */
                result.push('[' + i + ' "' + this._header[i] + '"]' + newline);
                headerExists = true;
            }
            if (headerExists && this._history.length) {
                result.push(newline);
            }
            const appendComment = (moveString) => {
                const comment = this._comments[this.fen()];
                if (typeof comment !== 'undefined') {
                    const delimiter = moveString.length > 0 ? ' ' : '';
                    moveString = `${moveString}${delimiter}{${comment}}`;
                }
                return moveString;
            };
            // pop all of history onto reversed_history
            const reversedHistory = [];
            while (this._history.length > 0) {
                reversedHistory.push(this._undoMove());
            }
            const moves = [];
            let moveString = '';
            // special case of a commented starting position with no moves
            if (reversedHistory.length === 0) {
                moves.push(appendComment(''));
            }
            // build the list of moves.  a move_string looks like: "3. e3 e6"
            while (reversedHistory.length > 0) {
                moveString = appendComment(moveString);
                const move = reversedHistory.pop();
                // make TypeScript stop complaining about move being undefined
                if (!move) {
                    break;
                }
                // if the position started with black to move, start PGN with #. ...
                if (!this._history.length && move.color === 'b') {
                    const prefix = `${this._moveNumber}. ...`;
                    // is there a comment preceding the first move?
                    moveString = moveString ? `${moveString} ${prefix}` : prefix;
                }
                else if (move.color === 'w') {
                    // store the previous generated move_string if we have one
                    if (moveString.length) {
                        moves.push(moveString);
                    }
                    moveString = this._moveNumber + '.';
                }
                moveString =
                    moveString + ' ' + this._moveToSan(move, this._moves({ legal: true }));
                this._makeMove(move);
            }
            // are there any other leftover moves?
            if (moveString.length) {
                moves.push(appendComment(moveString));
            }
            // is there a result?
            if (typeof this._header.Result !== 'undefined') {
                moves.push(this._header.Result);
            }
            /*
             * history should be back to what it was before we started generating PGN,
             * so join together moves
             */
            if (maxWidth === 0) {
                return result.join('') + moves.join(' ');
            }
            // TODO (jah): huh?
            const strip = function () {
                if (result.length > 0 && result[result.length - 1] === ' ') {
                    result.pop();
                    return true;
                }
                return false;
            };
            // NB: this does not preserve comment whitespace.
            const wrapComment = function (width, move) {
                for (const token of move.split(' ')) {
                    if (!token) {
                        continue;
                    }
                    if (width + token.length > maxWidth) {
                        while (strip()) {
                            width--;
                        }
                        result.push(newline);
                        width = 0;
                    }
                    result.push(token);
                    width += token.length;
                    result.push(' ');
                    width++;
                }
                if (strip()) {
                    width--;
                }
                return width;
            };
            // wrap the PGN output at max_width
            let currentWidth = 0;
            for (let i = 0; i < moves.length; i++) {
                if (currentWidth + moves[i].length > maxWidth) {
                    if (moves[i].includes('{')) {
                        currentWidth = wrapComment(currentWidth, moves[i]);
                        continue;
                    }
                }
                // if the current move will push past max_width
                if (currentWidth + moves[i].length > maxWidth && i !== 0) {
                    // don't end the line with whitespace
                    if (result[result.length - 1] === ' ') {
                        result.pop();
                    }
                    result.push(newline);
                    currentWidth = 0;
                }
                else if (i !== 0) {
                    result.push(' ');
                    currentWidth++;
                }
                result.push(moves[i]);
                currentWidth += moves[i].length;
            }
            return result.join('');
        }
        header(...args) {
            for (let i = 0; i < args.length; i += 2) {
                if (typeof args[i] === 'string' && typeof args[i + 1] === 'string') {
                    this._header[args[i]] = args[i + 1];
                }
            }
            return this._header;
        }
        loadPgn(pgn, { strict = false, newlineChar = '\r?\n', } = {}) {
            function mask(str) {
                return str.replace(/\\/g, '\\');
            }
            function parsePgnHeader(header) {
                const headerObj = {};
                const headers = header.split(new RegExp(mask(newlineChar)));
                let key = '';
                let value = '';
                for (let i = 0; i < headers.length; i++) {
                    const regex = /^\s*\[\s*([A-Za-z]+)\s*"(.*)"\s*\]\s*$/;
                    key = headers[i].replace(regex, '$1');
                    value = headers[i].replace(regex, '$2');
                    if (key.trim().length > 0) {
                        headerObj[key] = value;
                    }
                }
                return headerObj;
            }
            // strip whitespace from head/tail of PGN block
            pgn = pgn.trim();
            /*
             * RegExp to split header. Takes advantage of the fact that header and movetext
             * will always have a blank line between them (ie, two newline_char's). Handles
             * case where movetext is empty by matching newlineChar until end of string is
             * matched - effectively trimming from the end extra newlineChar.
             *
             * With default newline_char, will equal:
             * /^(\[((?:\r?\n)|.)*\])((?:\s*\r?\n){2}|(?:\s*\r?\n)*$)/
             */
            const headerRegex = new RegExp('^(\\[((?:' +
                mask(newlineChar) +
                ')|.)*\\])' +
                '((?:\\s*' +
                mask(newlineChar) +
                '){2}|(?:\\s*' +
                mask(newlineChar) +
                ')*$)');
            // If no header given, begin with moves.
            const headerRegexResults = headerRegex.exec(pgn);
            const headerString = headerRegexResults
                ? headerRegexResults.length >= 2
                    ? headerRegexResults[1]
                    : ''
                : '';
            // Put the board in the starting position
            this.reset();
            // parse PGN header
            const headers = parsePgnHeader(headerString);
            let fen = '';
            for (const key in headers) {
                // check to see user is including fen (possibly with wrong tag case)
                if (key.toLowerCase() === 'fen') {
                    fen = headers[key];
                }
                this.header(key, headers[key]);
            }
            /*
             * the permissive parser should attempt to load a fen tag, even if it's the
             * wrong case and doesn't include a corresponding [SetUp "1"] tag
             */
            if (!strict) {
                if (fen) {
                    this.load(fen, { preserveHeaders: true });
                }
            }
            else {
                /*
                 * strict parser - load the starting position indicated by [Setup '1']
                 * and [FEN position]
                 */
                if (headers['SetUp'] === '1') {
                    if (!('FEN' in headers)) {
                        throw new Error('Invalid PGN: FEN tag must be supplied with SetUp tag');
                    }
                    // don't clear the headers when loading
                    this.load(headers['FEN'], { preserveHeaders: true });
                }
            }
            /*
             * NB: the regexes below that delete move numbers, recursive annotations,
             * and numeric annotation glyphs may also match text in comments. To
             * prevent this, we transform comments by hex-encoding them in place and
             * decoding them again after the other tokens have been deleted.
             *
             * While the spec states that PGN files should be ASCII encoded, we use
             * {en,de}codeURIComponent here to support arbitrary UTF8 as a convenience
             * for modern users
             */
            function toHex(s) {
                return Array.from(s)
                    .map(function (c) {
                    /*
                     * encodeURI doesn't transform most ASCII characters, so we handle
                     * these ourselves
                     */
                    return c.charCodeAt(0) < 128
                        ? c.charCodeAt(0).toString(16)
                        : encodeURIComponent(c).replace(/%/g, '').toLowerCase();
                })
                    .join('');
            }
            function fromHex(s) {
                return s.length == 0
                    ? ''
                    : decodeURIComponent('%' + (s.match(/.{1,2}/g) || []).join('%'));
            }
            const encodeComment = function (s) {
                s = s.replace(new RegExp(mask(newlineChar), 'g'), ' ');
                return `{${toHex(s.slice(1, s.length - 1))}}`;
            };
            const decodeComment = function (s) {
                if (s.startsWith('{') && s.endsWith('}')) {
                    return fromHex(s.slice(1, s.length - 1));
                }
            };
            // delete header to get the moves
            let ms = pgn
                .replace(headerString, '')
                .replace(
            // encode comments so they don't get deleted below
            new RegExp(`({[^}]*})+?|;([^${mask(newlineChar)}]*)`, 'g'), function (_match, bracket, semicolon) {
                return bracket !== undefined
                    ? encodeComment(bracket)
                    : ' ' + encodeComment(`{${semicolon.slice(1)}}`);
            })
                .replace(new RegExp(mask(newlineChar), 'g'), ' ');
            // delete recursive annotation variations
            const ravRegex = /(\([^()]+\))+?/g;
            while (ravRegex.test(ms)) {
                ms = ms.replace(ravRegex, '');
            }
            // delete move numbers
            ms = ms.replace(/\d+\.(\.\.)?/g, '');
            // delete ... indicating black to move
            ms = ms.replace(/\.\.\./g, '');
            /* delete numeric annotation glyphs */
            ms = ms.replace(/\$\d+/g, '');
            // trim and get array of moves
            let moves = ms.trim().split(new RegExp(/\s+/));
            // delete empty entries
            moves = moves.filter((move) => move !== '');
            let result = '';
            for (let halfMove = 0; halfMove < moves.length; halfMove++) {
                const comment = decodeComment(moves[halfMove]);
                if (comment !== undefined) {
                    this._comments[this.fen()] = comment;
                    continue;
                }
                const move = this._moveFromSan(moves[halfMove], strict);
                // invalid move
                if (move == null) {
                    // was the move an end of game marker
                    if (TERMINATION_MARKERS.indexOf(moves[halfMove]) > -1) {
                        result = moves[halfMove];
                    }
                    else {
                        throw new Error(`Invalid move in PGN: ${moves[halfMove]}`);
                    }
                }
                else {
                    // reset the end of game marker if making a valid move
                    result = '';
                    this._makeMove(move);
                    this._incPositionCount(this.fen());
                }
            }
            /*
             * Per section 8.2.6 of the PGN spec, the Result tag pair must match match
             * the termination marker. Only do this when headers are present, but the
             * result tag is missing
             */
            if (result && Object.keys(this._header).length && !this._header['Result']) {
                this.header('Result', result);
            }
        }
        /*
         * Convert a move from 0x88 coordinates to Standard Algebraic Notation
         * (SAN)
         *
         * @param {boolean} strict Use the strict SAN parser. It will throw errors
         * on overly disambiguated moves (see below):
         *
         * r1bqkbnr/ppp2ppp/2n5/1B1pP3/4P3/8/PPPP2PP/RNBQK1NR b KQkq - 2 4
         * 4. ... Nge7 is overly disambiguated because the knight on c6 is pinned
         * 4. ... Ne7 is technically the valid SAN
         */
        _moveToSan(move, moves) {
            let output = '';
            if (move.flags & BITS.KSIDE_CASTLE) {
                output = 'O-O';
            }
            else if (move.flags & BITS.QSIDE_CASTLE) {
                output = 'O-O-O';
            }
            else {
                if (move.piece !== PAWN) {
                    const disambiguator = getDisambiguator(move, moves);
                    output += move.piece.toUpperCase() + disambiguator;
                }
                if (move.flags & (BITS.CAPTURE | BITS.EP_CAPTURE)) {
                    if (move.piece === PAWN) {
                        output += algebraic(move.from)[0];
                    }
                    output += 'x';
                }
                output += algebraic(move.to);
                if (move.promotion) {
                    output += '=' + move.promotion.toUpperCase();
                }
            }
            this._makeMove(move);
            if (this.isCheck()) {
                if (this.isCheckmate()) {
                    output += '#';
                }
                else {
                    output += '+';
                }
            }
            this._undoMove();
            return output;
        }
        // convert a move from Standard Algebraic Notation (SAN) to 0x88 coordinates
        _moveFromSan(move, strict = false) {
            // strip off any move decorations: e.g Nf3+?! becomes Nf3
            const cleanMove = strippedSan(move);
            let pieceType = inferPieceType(cleanMove);
            let moves = this._moves({ legal: true, piece: pieceType });
            // strict parser
            for (let i = 0, len = moves.length; i < len; i++) {
                if (cleanMove === strippedSan(this._moveToSan(moves[i], moves))) {
                    return moves[i];
                }
            }
            // the strict parser failed
            if (strict) {
                return null;
            }
            let piece = undefined;
            let matches = undefined;
            let from = undefined;
            let to = undefined;
            let promotion = undefined;
            /*
             * The default permissive (non-strict) parser allows the user to parse
             * non-standard chess notations. This parser is only run after the strict
             * Standard Algebraic Notation (SAN) parser has failed.
             *
             * When running the permissive parser, we'll run a regex to grab the piece, the
             * to/from square, and an optional promotion piece. This regex will
             * parse common non-standard notation like: Pe2-e4, Rc1c4, Qf3xf7,
             * f7f8q, b1c3
             *
             * NOTE: Some positions and moves may be ambiguous when using the permissive
             * parser. For example, in this position: 6k1/8/8/B7/8/8/8/BN4K1 w - - 0 1,
             * the move b1c3 may be interpreted as Nc3 or B1c3 (a disambiguated bishop
             * move). In these cases, the permissive parser will default to the most
             * basic interpretation (which is b1c3 parsing to Nc3).
             */
            let overlyDisambiguated = false;
            matches = cleanMove.match(/([pnbrqkPNBRQK])?([a-h][1-8])x?-?([a-h][1-8])([qrbnQRBN])?/);
            if (matches) {
                piece = matches[1];
                from = matches[2];
                to = matches[3];
                promotion = matches[4];
                if (from.length == 1) {
                    overlyDisambiguated = true;
                }
            }
            else {
                /*
                 * The [a-h]?[1-8]? portion of the regex below handles moves that may be
                 * overly disambiguated (e.g. Nge7 is unnecessary and non-standard when
                 * there is one legal knight move to e7). In this case, the value of
                 * 'from' variable will be a rank or file, not a square.
                 */
                matches = cleanMove.match(/([pnbrqkPNBRQK])?([a-h]?[1-8]?)x?-?([a-h][1-8])([qrbnQRBN])?/);
                if (matches) {
                    piece = matches[1];
                    from = matches[2];
                    to = matches[3];
                    promotion = matches[4];
                    if (from.length == 1) {
                        overlyDisambiguated = true;
                    }
                }
            }
            pieceType = inferPieceType(cleanMove);
            moves = this._moves({
                legal: true,
                piece: piece ? piece : pieceType,
            });
            if (!to) {
                return null;
            }
            for (let i = 0, len = moves.length; i < len; i++) {
                if (!from) {
                    // if there is no from square, it could be just 'x' missing from a capture
                    if (cleanMove ===
                        strippedSan(this._moveToSan(moves[i], moves)).replace('x', '')) {
                        return moves[i];
                    }
                    // hand-compare move properties with the results from our permissive regex
                }
                else if ((!piece || piece.toLowerCase() == moves[i].piece) &&
                    Ox88[from] == moves[i].from &&
                    Ox88[to] == moves[i].to &&
                    (!promotion || promotion.toLowerCase() == moves[i].promotion)) {
                    return moves[i];
                }
                else if (overlyDisambiguated) {
                    /*
                     * SPECIAL CASE: we parsed a move string that may have an unneeded
                     * rank/file disambiguator (e.g. Nge7).  The 'from' variable will
                     */
                    const square = algebraic(moves[i].from);
                    if ((!piece || piece.toLowerCase() == moves[i].piece) &&
                        Ox88[to] == moves[i].to &&
                        (from == square[0] || from == square[1]) &&
                        (!promotion || promotion.toLowerCase() == moves[i].promotion)) {
                        return moves[i];
                    }
                }
            }
            return null;
        }
        ascii() {
            let s = '   +------------------------+\n';
            for (let i = Ox88.a8; i <= Ox88.h1; i++) {
                // display the rank
                if (file$5(i) === 0) {
                    s += ' ' + '87654321'[rank(i)] + ' |';
                }
                if (this._board[i]) {
                    const piece = this._board[i].type;
                    const color = this._board[i].color;
                    const symbol = color === WHITE ? piece.toUpperCase() : piece.toLowerCase();
                    s += ' ' + symbol + ' ';
                }
                else {
                    s += ' . ';
                }
                if ((i + 1) & 0x88) {
                    s += '|\n';
                    i += 8;
                }
            }
            s += '   +------------------------+\n';
            s += '     a  b  c  d  e  f  g  h';
            return s;
        }
        perft(depth) {
            const moves = this._moves({ legal: false });
            let nodes = 0;
            const color = this._turn;
            for (let i = 0, len = moves.length; i < len; i++) {
                this._makeMove(moves[i]);
                if (!this._isKingAttacked(color)) {
                    if (depth - 1 > 0) {
                        nodes += this.perft(depth - 1);
                    }
                    else {
                        nodes++;
                    }
                }
                this._undoMove();
            }
            return nodes;
        }
        // pretty = external move object
        _makePretty(uglyMove) {
            const { color, piece, from, to, flags, captured, promotion } = uglyMove;
            let prettyFlags = '';
            for (const flag in BITS) {
                if (BITS[flag] & flags) {
                    prettyFlags += FLAGS[flag];
                }
            }
            const fromAlgebraic = algebraic(from);
            const toAlgebraic = algebraic(to);
            const move = {
                color,
                piece,
                from: fromAlgebraic,
                to: toAlgebraic,
                san: this._moveToSan(uglyMove, this._moves({ legal: true })),
                flags: prettyFlags,
                lan: fromAlgebraic + toAlgebraic,
                before: this.fen(),
                after: '',
            };
            // generate the FEN for the 'after' key
            this._makeMove(uglyMove);
            move.after = this.fen();
            this._undoMove();
            if (captured) {
                move.captured = captured;
            }
            if (promotion) {
                move.promotion = promotion;
                move.lan += promotion;
            }
            return move;
        }
        turn() {
            return this._turn;
        }
        board() {
            const output = [];
            let row = [];
            for (let i = Ox88.a8; i <= Ox88.h1; i++) {
                if (this._board[i] == null) {
                    row.push(null);
                }
                else {
                    row.push({
                        square: algebraic(i),
                        type: this._board[i].type,
                        color: this._board[i].color,
                    });
                }
                if ((i + 1) & 0x88) {
                    output.push(row);
                    row = [];
                    i += 8;
                }
            }
            return output;
        }
        squareColor(square) {
            if (square in Ox88) {
                const sq = Ox88[square];
                return (rank(sq) + file$5(sq)) % 2 === 0 ? 'light' : 'dark';
            }
            return null;
        }
        history({ verbose = false } = {}) {
            const reversedHistory = [];
            const moveHistory = [];
            while (this._history.length > 0) {
                reversedHistory.push(this._undoMove());
            }
            while (true) {
                const move = reversedHistory.pop();
                if (!move) {
                    break;
                }
                if (verbose) {
                    moveHistory.push(this._makePretty(move));
                }
                else {
                    moveHistory.push(this._moveToSan(move, this._moves()));
                }
                this._makeMove(move);
            }
            return moveHistory;
        }
        /*
         * Keeps track of position occurrence counts for the purpose of repetition
         * checking. All three methods (`_inc`, `_dec`, and `_get`) trim the
         * irrelevent information from the fen, initialising new positions, and
         * removing old positions from the record if their counts are reduced to 0.
         */
        _getPositionCount(fen) {
            const trimmedFen = trimFen(fen);
            return this._positionCount[trimmedFen] || 0;
        }
        _incPositionCount(fen) {
            const trimmedFen = trimFen(fen);
            if (this._positionCount[trimmedFen] === undefined) {
                this._positionCount[trimmedFen] = 0;
            }
            this._positionCount[trimmedFen] += 1;
        }
        _decPositionCount(fen) {
            const trimmedFen = trimFen(fen);
            if (this._positionCount[trimmedFen] === 1) {
                delete this._positionCount[trimmedFen];
            }
            else {
                this._positionCount[trimmedFen] -= 1;
            }
        }
        _pruneComments() {
            const reversedHistory = [];
            const currentComments = {};
            const copyComment = (fen) => {
                if (fen in this._comments) {
                    currentComments[fen] = this._comments[fen];
                }
            };
            while (this._history.length > 0) {
                reversedHistory.push(this._undoMove());
            }
            copyComment(this.fen());
            while (true) {
                const move = reversedHistory.pop();
                if (!move) {
                    break;
                }
                this._makeMove(move);
                copyComment(this.fen());
            }
            this._comments = currentComments;
        }
        getComment() {
            return this._comments[this.fen()];
        }
        setComment(comment) {
            this._comments[this.fen()] = comment.replace('{', '[').replace('}', ']');
        }
        deleteComment() {
            const comment = this._comments[this.fen()];
            delete this._comments[this.fen()];
            return comment;
        }
        getComments() {
            this._pruneComments();
            return Object.keys(this._comments).map((fen) => {
                return { fen: fen, comment: this._comments[fen] };
            });
        }
        deleteComments() {
            this._pruneComments();
            return Object.keys(this._comments).map((fen) => {
                const comment = this._comments[fen];
                delete this._comments[fen];
                return { fen: fen, comment: comment };
            });
        }
        setCastlingRights(color, rights) {
            for (const side of [KING, QUEEN]) {
                if (rights[side] !== undefined) {
                    if (rights[side]) {
                        this._castling[color] |= SIDES[side];
                    }
                    else {
                        this._castling[color] &= ~SIDES[side];
                    }
                }
            }
            this._updateCastlingRights();
            const result = this.getCastlingRights(color);
            return ((rights[KING] === undefined || rights[KING] === result[KING]) &&
                (rights[QUEEN] === undefined || rights[QUEEN] === result[QUEEN]));
        }
        getCastlingRights(color) {
            return {
                [KING]: (this._castling[color] & SIDES[KING]) !== 0,
                [QUEEN]: (this._castling[color] & SIDES[QUEEN]) !== 0,
            };
        }
        moveNumber() {
            return this._moveNumber;
        }
    }

    /* src\ChessStudyTool.svelte generated by Svelte v3.59.2 */
    const file$4 = "src\\ChessStudyTool.svelte";

    function get_each_context$3(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[31] = list[i];
    	return child_ctx;
    }

    function get_each_context_1$3(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[34] = list[i];
    	child_ctx[36] = i;
    	return child_ctx;
    }

    function get_each_context_2$3(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[37] = list[i];
    	child_ctx[39] = i;
    	return child_ctx;
    }

    function get_each_context_3$1(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[40] = list[i];
    	child_ctx[42] = i;
    	return child_ctx;
    }

    // (174:22) {#if piece}
    function create_if_block_3$1(ctx) {
    	let img;
    	let img_src_value;
    	let img_alt_value;

    	const block = {
    		c: function create() {
    			img = element$1("img");
    			if (!src_url_equal(img.src, img_src_value = getPieceImage(/*piece*/ ctx[40]))) attr_dev(img, "src", img_src_value);
    			attr_dev(img, "alt", img_alt_value = /*piece*/ ctx[40].type);
    			attr_dev(img, "class", "svelte-7r6gh4");
    			add_location(img, file$4, 174, 26, 6485);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, img, anchor);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*board*/ 1 && !src_url_equal(img.src, img_src_value = getPieceImage(/*piece*/ ctx[40]))) {
    				attr_dev(img, "src", img_src_value);
    			}

    			if (dirty[0] & /*board*/ 1 && img_alt_value !== (img_alt_value = /*piece*/ ctx[40].type)) {
    				attr_dev(img, "alt", img_alt_value);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(img);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_3$1.name,
    		type: "if",
    		source: "(174:22) {#if piece}",
    		ctx
    	});

    	return block;
    }

    // (177:22) {#if squareText[rowIndex * 8 + colIndex]}
    function create_if_block_2$1(ctx) {
    	let span;
    	let t_value = /*squareText*/ ctx[5][/*rowIndex*/ ctx[39] * 8 + /*colIndex*/ ctx[42]] + "";
    	let t;

    	const block = {
    		c: function create() {
    			span = element$1("span");
    			t = text(t_value);
    			attr_dev(span, "class", "square-text svelte-7r6gh4");
    			add_location(span, file$4, 177, 26, 6660);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, span, anchor);
    			append_dev(span, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*squareText*/ 32 && t_value !== (t_value = /*squareText*/ ctx[5][/*rowIndex*/ ctx[39] * 8 + /*colIndex*/ ctx[42]] + "")) set_data_dev(t, t_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(span);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_2$1.name,
    		type: "if",
    		source: "(177:22) {#if squareText[rowIndex * 8 + colIndex]}",
    		ctx
    	});

    	return block;
    }

    // (169:14) {#each row as piece, colIndex}
    function create_each_block_3$1(ctx) {
    	let div;
    	let t;
    	let mounted;
    	let dispose;
    	let if_block0 = /*piece*/ ctx[40] && create_if_block_3$1(ctx);
    	let if_block1 = /*squareText*/ ctx[5][/*rowIndex*/ ctx[39] * 8 + /*colIndex*/ ctx[42]] && create_if_block_2$1(ctx);

    	function click_handler() {
    		return /*click_handler*/ ctx[20](/*rowIndex*/ ctx[39], /*colIndex*/ ctx[42]);
    	}

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			if (if_block0) if_block0.c();
    			t = space();
    			if (if_block1) if_block1.c();
    			attr_dev(div, "class", "square " + getSquareColor(/*rowIndex*/ ctx[39] * 8 + /*colIndex*/ ctx[42]) + " svelte-7r6gh4");
    			add_location(div, file$4, 169, 18, 6234);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			if (if_block0) if_block0.m(div, null);
    			append_dev(div, t);
    			if (if_block1) if_block1.m(div, null);

    			if (!mounted) {
    				dispose = listen_dev(div, "click", click_handler, false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;

    			if (/*piece*/ ctx[40]) {
    				if (if_block0) {
    					if_block0.p(ctx, dirty);
    				} else {
    					if_block0 = create_if_block_3$1(ctx);
    					if_block0.c();
    					if_block0.m(div, t);
    				}
    			} else if (if_block0) {
    				if_block0.d(1);
    				if_block0 = null;
    			}

    			if (/*squareText*/ ctx[5][/*rowIndex*/ ctx[39] * 8 + /*colIndex*/ ctx[42]]) {
    				if (if_block1) {
    					if_block1.p(ctx, dirty);
    				} else {
    					if_block1 = create_if_block_2$1(ctx);
    					if_block1.c();
    					if_block1.m(div, null);
    				}
    			} else if (if_block1) {
    				if_block1.d(1);
    				if_block1 = null;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			if (if_block0) if_block0.d();
    			if (if_block1) if_block1.d();
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_3$1.name,
    		type: "each",
    		source: "(169:14) {#each row as piece, colIndex}",
    		ctx
    	});

    	return block;
    }

    // (167:6) {#each board as row, rowIndex}
    function create_each_block_2$3(ctx) {
    	let div;
    	let t;
    	let each_value_3 = /*row*/ ctx[37];
    	validate_each_argument(each_value_3);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_3.length; i += 1) {
    		each_blocks[i] = create_each_block_3$1(get_each_context_3$1(ctx, each_value_3, i));
    	}

    	const block = {
    		c: function create() {
    			div = element$1("div");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t = space();
    			attr_dev(div, "class", "row svelte-7r6gh4");
    			add_location(div, file$4, 167, 10, 6151);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div, null);
    				}
    			}

    			append_dev(div, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*handleSquareClick, squareText, board*/ 545) {
    				each_value_3 = /*row*/ ctx[37];
    				validate_each_argument(each_value_3);
    				let i;

    				for (i = 0; i < each_value_3.length; i += 1) {
    					const child_ctx = get_each_context_3$1(ctx, each_value_3, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_3$1(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(div, t);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_3.length;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			destroy_each(each_blocks, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_2$3.name,
    		type: "each",
    		source: "(167:6) {#each board as row, rowIndex}",
    		ctx
    	});

    	return block;
    }

    // (194:6) {#if games.length > 0}
    function create_if_block_1$1(ctx) {
    	let div;
    	let h3;
    	let t1;
    	let select;
    	let t2;
    	let button;
    	let mounted;
    	let dispose;
    	let each_value_1 = /*games*/ ctx[2];
    	validate_each_argument(each_value_1);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks[i] = create_each_block_1$3(get_each_context_1$3(ctx, each_value_1, i));
    	}

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			h3 = element$1("h3");
    			h3.textContent = "Select a Game";
    			t1 = space();
    			select = element$1("select");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t2 = space();
    			button = element$1("button");
    			button.textContent = "Load Selected Game";
    			add_location(h3, file$4, 195, 14, 7367);
    			attr_dev(select, "class", "svelte-7r6gh4");
    			add_location(select, file$4, 196, 14, 7405);
    			attr_dev(button, "class", "svelte-7r6gh4");
    			add_location(button, file$4, 203, 14, 7765);
    			attr_dev(div, "class", "game-selector svelte-7r6gh4");
    			add_location(div, file$4, 194, 10, 7324);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, h3);
    			append_dev(div, t1);
    			append_dev(div, select);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(select, null);
    				}
    			}

    			append_dev(div, t2);
    			append_dev(div, button);

    			if (!mounted) {
    				dispose = [
    					listen_dev(select, "change", /*change_handler*/ ctx[21], false, false, false, false),
    					listen_dev(button, "click", /*loadSelectedGame*/ ctx[14], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*games*/ 4) {
    				each_value_1 = /*games*/ ctx[2];
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$3(ctx, each_value_1, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_1$3(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(select, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_1.length;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_1$1.name,
    		type: "if",
    		source: "(194:6) {#if games.length > 0}",
    		ctx
    	});

    	return block;
    }

    // (198:18) {#each games as game, index}
    function create_each_block_1$3(ctx) {
    	let option;
    	let t0_value = /*game*/ ctx[34].metadata.Event + "";
    	let t0;
    	let t1;
    	let t2_value = /*game*/ ctx[34].metadata.White + "";
    	let t2;
    	let t3;
    	let t4_value = /*game*/ ctx[34].metadata.Black + "";
    	let t4;
    	let t5;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t0 = text(t0_value);
    			t1 = text(" - ");
    			t2 = text(t2_value);
    			t3 = text(" vs ");
    			t4 = text(t4_value);
    			t5 = space();
    			option.__value = /*index*/ ctx[36];
    			option.value = option.__value;
    			add_location(option, file$4, 198, 22, 7544);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t0);
    			append_dev(option, t1);
    			append_dev(option, t2);
    			append_dev(option, t3);
    			append_dev(option, t4);
    			append_dev(option, t5);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*games*/ 4 && t0_value !== (t0_value = /*game*/ ctx[34].metadata.Event + "")) set_data_dev(t0, t0_value);
    			if (dirty[0] & /*games*/ 4 && t2_value !== (t2_value = /*game*/ ctx[34].metadata.White + "")) set_data_dev(t2, t2_value);
    			if (dirty[0] & /*games*/ 4 && t4_value !== (t4_value = /*game*/ ctx[34].metadata.Black + "")) set_data_dev(t4, t4_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$3.name,
    		type: "each",
    		source: "(198:18) {#each games as game, index}",
    		ctx
    	});

    	return block;
    }

    // (208:6) {#if previewText}
    function create_if_block$2(ctx) {
    	let div;
    	let h3;
    	let t1;
    	let textarea;
    	let t2;
    	let button;
    	let mounted;
    	let dispose;

    	const block = {
    		c: function create() {
    			div = element$1("div");
    			h3 = element$1("h3");
    			h3.textContent = "Game Preview";
    			t1 = space();
    			textarea = element$1("textarea");
    			t2 = space();
    			button = element$1("button");
    			button.textContent = "Copy to Clipboard";
    			add_location(h3, file$4, 209, 14, 7935);
    			textarea.readOnly = true;
    			attr_dev(textarea, "rows", "10");
    			attr_dev(textarea, "cols", "50");
    			textarea.value = /*previewText*/ ctx[4];
    			attr_dev(textarea, "class", "svelte-7r6gh4");
    			add_location(textarea, file$4, 210, 14, 7972);
    			add_location(button, file$4, 211, 14, 8051);
    			attr_dev(div, "class", "preview svelte-7r6gh4");
    			add_location(div, file$4, 208, 10, 7898);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div, anchor);
    			append_dev(div, h3);
    			append_dev(div, t1);
    			append_dev(div, textarea);
    			append_dev(div, t2);
    			append_dev(div, button);

    			if (!mounted) {
    				dispose = listen_dev(button, "click", /*copyToClipboard*/ ctx[15], false, false, false, false);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*previewText*/ 16) {
    				prop_dev(textarea, "value", /*previewText*/ ctx[4]);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$2.name,
    		type: "if",
    		source: "(208:6) {#if previewText}",
    		ctx
    	});

    	return block;
    }

    // (219:14) {#each squareOptions as option}
    function create_each_block$3(ctx) {
    	let option;
    	let t_value = /*option*/ ctx[31].label + "";
    	let t;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = /*option*/ ctx[31].value;
    			option.value = option.__value;
    			add_location(option, file$4, 219, 18, 8358);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$3.name,
    		type: "each",
    		source: "(219:14) {#each squareOptions as option}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$4(ctx) {
    	let div4;
    	let div0;
    	let t0;
    	let div3;
    	let textarea0;
    	let t1;
    	let button0;
    	let t3;
    	let hr;
    	let t4;
    	let input0;
    	let t5;
    	let button1;
    	let t7;
    	let button2;
    	let t9;
    	let t10;
    	let t11;
    	let div1;
    	let select;
    	let option;
    	let t13;
    	let input1;
    	let t14;
    	let button3;
    	let t16;
    	let div2;
    	let h3;
    	let t18;
    	let button4;
    	let t20;
    	let textarea1;
    	let t21;
    	let button5;
    	let mounted;
    	let dispose;
    	let each_value_2 = /*board*/ ctx[0];
    	validate_each_argument(each_value_2);
    	let each_blocks_1 = [];

    	for (let i = 0; i < each_value_2.length; i += 1) {
    		each_blocks_1[i] = create_each_block_2$3(get_each_context_2$3(ctx, each_value_2, i));
    	}

    	let if_block0 = /*games*/ ctx[2].length > 0 && create_if_block_1$1(ctx);
    	let if_block1 = /*previewText*/ ctx[4] && create_if_block$2(ctx);
    	let each_value = /*squareOptions*/ ctx[8];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$3(get_each_context$3(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			div4 = element$1("div");
    			div0 = element$1("div");

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				each_blocks_1[i].c();
    			}

    			t0 = space();
    			div3 = element$1("div");
    			textarea0 = element$1("textarea");
    			t1 = space();
    			button0 = element$1("button");
    			button0.textContent = "Load from Text";
    			t3 = space();
    			hr = element$1("hr");
    			t4 = space();
    			input0 = element$1("input");
    			t5 = space();
    			button1 = element$1("button");
    			button1.textContent = "Load Starting Position";
    			t7 = space();
    			button2 = element$1("button");
    			button2.textContent = "Next Move";
    			t9 = space();
    			if (if_block0) if_block0.c();
    			t10 = space();
    			if (if_block1) if_block1.c();
    			t11 = space();
    			div1 = element$1("div");
    			select = element$1("select");
    			option = element$1("option");
    			option.textContent = "Select a square";

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t13 = space();
    			input1 = element$1("input");
    			t14 = space();
    			button3 = element$1("button");
    			button3.textContent = "Add Text to Square";
    			t16 = space();
    			div2 = element$1("div");
    			h3 = element$1("h3");
    			h3.textContent = "Save and Load Position";
    			t18 = space();
    			button4 = element$1("button");
    			button4.textContent = "Save Current Position";
    			t20 = space();
    			textarea1 = element$1("textarea");
    			t21 = space();
    			button5 = element$1("button");
    			button5.textContent = "Load Saved Position";
    			attr_dev(div0, "class", "board svelte-7r6gh4");
    			add_location(div0, file$4, 165, 2, 6082);
    			attr_dev(textarea0, "id", "notationTextarea");
    			attr_dev(textarea0, "placeholder", "Enter notation here...");
    			attr_dev(textarea0, "rows", "5");
    			attr_dev(textarea0, "cols", "50");
    			add_location(textarea0, file$4, 186, 6, 6870);
    			add_location(button0, file$4, 187, 6, 7008);
    			add_location(hr, file$4, 188, 6, 7071);
    			attr_dev(input0, "type", "file");
    			attr_dev(input0, "accept", ".pgn");
    			add_location(input0, file$4, 189, 6, 7083);
    			add_location(button1, file$4, 190, 6, 7155);
    			add_location(button2, file$4, 191, 6, 7234);
    			option.__value = "";
    			option.value = option.__value;
    			option.disabled = true;
    			add_location(option, file$4, 217, 14, 8241);
    			attr_dev(select, "class", "svelte-7r6gh4");
    			if (/*selectedSquare*/ ctx[1] === void 0) add_render_callback(() => /*select_change_handler*/ ctx[22].call(select));
    			add_location(select, file$4, 216, 10, 8189);
    			attr_dev(input1, "type", "text");
    			attr_dev(input1, "placeholder", "Enter text for selected square");
    			attr_dev(input1, "class", "svelte-7r6gh4");
    			add_location(input1, file$4, 222, 10, 8466);
    			attr_dev(button3, "class", "svelte-7r6gh4");
    			add_location(button3, file$4, 223, 10, 8567);
    			attr_dev(div1, "class", "text-input svelte-7r6gh4");
    			add_location(div1, file$4, 215, 6, 8153);
    			add_location(h3, file$4, 227, 10, 8688);
    			attr_dev(button4, "class", "svelte-7r6gh4");
    			add_location(button4, file$4, 228, 10, 8731);
    			attr_dev(textarea1, "placeholder", "Paste saved position data here...");
    			attr_dev(textarea1, "rows", "5");
    			attr_dev(textarea1, "cols", "50");
    			attr_dev(textarea1, "class", "svelte-7r6gh4");
    			add_location(textarea1, file$4, 229, 10, 8805);
    			attr_dev(button5, "class", "svelte-7r6gh4");
    			add_location(button5, file$4, 230, 10, 8927);
    			attr_dev(div2, "class", "save-load svelte-7r6gh4");
    			add_location(div2, file$4, 226, 6, 8653);
    			add_location(div3, file$4, 185, 2, 6857);
    			attr_dev(div4, "class", "boardandextra svelte-7r6gh4");
    			add_location(div4, file$4, 164, 0, 6051);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div4, anchor);
    			append_dev(div4, div0);

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				if (each_blocks_1[i]) {
    					each_blocks_1[i].m(div0, null);
    				}
    			}

    			append_dev(div4, t0);
    			append_dev(div4, div3);
    			append_dev(div3, textarea0);
    			append_dev(div3, t1);
    			append_dev(div3, button0);
    			append_dev(div3, t3);
    			append_dev(div3, hr);
    			append_dev(div3, t4);
    			append_dev(div3, input0);
    			append_dev(div3, t5);
    			append_dev(div3, button1);
    			append_dev(div3, t7);
    			append_dev(div3, button2);
    			append_dev(div3, t9);
    			if (if_block0) if_block0.m(div3, null);
    			append_dev(div3, t10);
    			if (if_block1) if_block1.m(div3, null);
    			append_dev(div3, t11);
    			append_dev(div3, div1);
    			append_dev(div1, select);
    			append_dev(select, option);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(select, null);
    				}
    			}

    			select_option(select, /*selectedSquare*/ ctx[1], true);
    			append_dev(div1, t13);
    			append_dev(div1, input1);
    			set_input_value(input1, /*textInput*/ ctx[6]);
    			append_dev(div1, t14);
    			append_dev(div1, button3);
    			append_dev(div3, t16);
    			append_dev(div3, div2);
    			append_dev(div2, h3);
    			append_dev(div2, t18);
    			append_dev(div2, button4);
    			append_dev(div2, t20);
    			append_dev(div2, textarea1);
    			set_input_value(textarea1, /*saveData*/ ctx[7]);
    			append_dev(div2, t21);
    			append_dev(div2, button5);

    			if (!mounted) {
    				dispose = [
    					listen_dev(textarea0, "input", /*handleTextareaInput*/ ctx[16], false, false, false, false),
    					listen_dev(button0, "click", /*loadFromText*/ ctx[17], false, false, false, false),
    					listen_dev(input0, "change", /*handleFileUpload*/ ctx[13], false, false, false, false),
    					listen_dev(button1, "click", /*loadStartingPosition*/ ctx[11], false, false, false, false),
    					listen_dev(button2, "click", /*nextMove*/ ctx[12], false, false, false, false),
    					listen_dev(select, "change", /*select_change_handler*/ ctx[22]),
    					listen_dev(input1, "input", /*input1_input_handler*/ ctx[23]),
    					listen_dev(button3, "click", /*addTextToSquare*/ ctx[10], false, false, false, false),
    					listen_dev(button4, "click", /*savePosition*/ ctx[18], false, false, false, false),
    					listen_dev(textarea1, "input", /*textarea1_input_handler*/ ctx[24]),
    					listen_dev(button5, "click", /*loadSavedPosition*/ ctx[19], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*board, handleSquareClick, squareText*/ 545) {
    				each_value_2 = /*board*/ ctx[0];
    				validate_each_argument(each_value_2);
    				let i;

    				for (i = 0; i < each_value_2.length; i += 1) {
    					const child_ctx = get_each_context_2$3(ctx, each_value_2, i);

    					if (each_blocks_1[i]) {
    						each_blocks_1[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_1[i] = create_each_block_2$3(child_ctx);
    						each_blocks_1[i].c();
    						each_blocks_1[i].m(div0, null);
    					}
    				}

    				for (; i < each_blocks_1.length; i += 1) {
    					each_blocks_1[i].d(1);
    				}

    				each_blocks_1.length = each_value_2.length;
    			}

    			if (/*games*/ ctx[2].length > 0) {
    				if (if_block0) {
    					if_block0.p(ctx, dirty);
    				} else {
    					if_block0 = create_if_block_1$1(ctx);
    					if_block0.c();
    					if_block0.m(div3, t10);
    				}
    			} else if (if_block0) {
    				if_block0.d(1);
    				if_block0 = null;
    			}

    			if (/*previewText*/ ctx[4]) {
    				if (if_block1) {
    					if_block1.p(ctx, dirty);
    				} else {
    					if_block1 = create_if_block$2(ctx);
    					if_block1.c();
    					if_block1.m(div3, t11);
    				}
    			} else if (if_block1) {
    				if_block1.d(1);
    				if_block1 = null;
    			}

    			if (dirty[0] & /*squareOptions*/ 256) {
    				each_value = /*squareOptions*/ ctx[8];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$3(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$3(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(select, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}

    			if (dirty[0] & /*selectedSquare, squareOptions*/ 258) {
    				select_option(select, /*selectedSquare*/ ctx[1]);
    			}

    			if (dirty[0] & /*textInput*/ 64 && input1.value !== /*textInput*/ ctx[6]) {
    				set_input_value(input1, /*textInput*/ ctx[6]);
    			}

    			if (dirty[0] & /*saveData*/ 128) {
    				set_input_value(textarea1, /*saveData*/ ctx[7]);
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div4);
    			destroy_each(each_blocks_1, detaching);
    			if (if_block0) if_block0.d();
    			if (if_block1) if_block1.d();
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$4.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function getSquareColor(square) {
    	const row = 8 - Math.floor(square / 8);
    	const col = square % 8 + 1;
    	return (row + col) % 2 === 0 ? 'light' : 'dark';
    }

    function getPieceImage(piece) {
    	if (!piece) return '';
    	const pieceType = piece.type;
    	const pieceColor = piece.color === 'w' ? 'white' : 'black';
    	return `/Chess/${pieceColor}_${pieceType}.png`; // Ensure these images are available in the /images directory
    }

    function instance$4($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('ChessStudyTool', slots, []);
    	let chess = new Chess();
    	let board = chess.board();
    	let selectedSquare = null;
    	let moves = [];
    	let currentMoveIndex = 0;
    	let pgnContent = '';
    	let games = [];
    	let selectedGameIndex = -1;
    	let previewText = '';
    	let squareText = {}; // Object to store text for each square
    	let textInput = '';
    	let saveData = ''; // Text area content to save/load position

    	let squareOptions = [
    		{ value: 0, label: 'a8' },
    		{ value: 1, label: 'b8' },
    		{ value: 2, label: 'c8' },
    		{ value: 3, label: 'd8' },
    		{ value: 4, label: 'e8' },
    		{ value: 5, label: 'f8' },
    		{ value: 6, label: 'g8' },
    		{ value: 7, label: 'h8' },
    		{ value: 8, label: 'a7' },
    		{ value: 9, label: 'b7' },
    		{ value: 10, label: 'c7' },
    		{ value: 11, label: 'd7' },
    		{ value: 12, label: 'e7' },
    		{ value: 13, label: 'f7' },
    		{ value: 14, label: 'g7' },
    		{ value: 15, label: 'h7' },
    		{ value: 16, label: 'a6' },
    		{ value: 17, label: 'b6' },
    		{ value: 18, label: 'c6' },
    		{ value: 19, label: 'd6' },
    		{ value: 20, label: 'e6' },
    		{ value: 21, label: 'f6' },
    		{ value: 22, label: 'g6' },
    		{ value: 23, label: 'h6' },
    		{ value: 24, label: 'a5' },
    		{ value: 25, label: 'b5' },
    		{ value: 26, label: 'c5' },
    		{ value: 27, label: 'd5' },
    		{ value: 28, label: 'e5' },
    		{ value: 29, label: 'f5' },
    		{ value: 30, label: 'g5' },
    		{ value: 31, label: 'h5' },
    		{ value: 32, label: 'a4' },
    		{ value: 33, label: 'b4' },
    		{ value: 34, label: 'c4' },
    		{ value: 35, label: 'd4' },
    		{ value: 36, label: 'e4' },
    		{ value: 37, label: 'f4' },
    		{ value: 38, label: 'g4' },
    		{ value: 39, label: 'h4' },
    		{ value: 40, label: 'a3' },
    		{ value: 41, label: 'b3' },
    		{ value: 42, label: 'c3' },
    		{ value: 43, label: 'd3' },
    		{ value: 44, label: 'e3' },
    		{ value: 45, label: 'f3' },
    		{ value: 46, label: 'g3' },
    		{ value: 47, label: 'h3' },
    		{ value: 48, label: 'a2' },
    		{ value: 49, label: 'b2' },
    		{ value: 50, label: 'c2' },
    		{ value: 51, label: 'd2' },
    		{ value: 52, label: 'e2' },
    		{ value: 53, label: 'f2' },
    		{ value: 54, label: 'g2' },
    		{ value: 55, label: 'h2' },
    		{ value: 56, label: 'a1' },
    		{ value: 57, label: 'b1' },
    		{ value: 58, label: 'c1' },
    		{ value: 59, label: 'd1' },
    		{ value: 60, label: 'e1' },
    		{ value: 61, label: 'f1' },
    		{ value: 62, label: 'g1' },
    		{ value: 63, label: 'h1' }
    	];

    	function handleSquareClick(square) {
    		$$invalidate(1, selectedSquare = square);
    	}

    	function addTextToSquare() {
    		if (selectedSquare !== null && textInput.trim() !== '') {
    			$$invalidate(5, squareText[selectedSquare] = textInput, squareText);
    			$$invalidate(6, textInput = '');
    			$$invalidate(1, selectedSquare = null);
    		}
    	}

    	function loadStartingPosition() {
    		chess.reset();
    		$$invalidate(0, board = chess.board());
    		$$invalidate(1, selectedSquare = null);
    		moves = [];
    		currentMoveIndex = 0;
    		$$invalidate(5, squareText = {}); // Clear all square text
    	}

    	function loadNotation(notation) {
    		chess.reset();
    		moves = notation.split(/\d+\.\s*/).filter(Boolean).flatMap(movePair => movePair.trim().split(/\s+/));
    		currentMoveIndex = 0;
    		$$invalidate(0, board = chess.board());
    	}

    	function nextMove() {
    		if (currentMoveIndex < moves.length) {
    			chess.move(moves[currentMoveIndex]);
    			$$invalidate(0, board = chess.board());
    			currentMoveIndex++;
    		}
    	}

    	function handleFileUpload(event) {
    		const file = event.target.files[0];

    		if (file) {
    			const reader = new FileReader();

    			reader.onload = function (e) {
    				pgnContent = e.target.result;
    				parsePgn(pgnContent);
    			};

    			reader.readAsText(file);
    		}
    	}

    	function parsePgn(content) {
    		const gameSections = content.split(/\r?\n\r?\n(?=\[Event)/);

    		$$invalidate(2, games = gameSections.map(section => {
    			const metadata = {};
    			const moves = [];
    			const lines = section.split(/\r?\n/);

    			lines.forEach(line => {
    				if (line.startsWith('[')) {
    					const match = line.match(/\[(\w+)\s+"(.+)"\]/);

    					if (match) {
    						metadata[match[1]] = match[2];
    					}
    				} else if (line.trim()) {
    					moves.push(line.trim());
    				}
    			});

    			return { metadata, moves };
    		}));
    	}

    	function loadSelectedGame() {
    		if (selectedGameIndex >= 0) {
    			const selectedGame = games[selectedGameIndex];
    			loadNotation(selectedGame.moves.join(' '));
    			$$invalidate(4, previewText = selectedGame.moves.join(' ').slice(0, 2000));
    		}
    	}

    	function copyToClipboard() {
    		navigator.clipboard.writeText(previewText).then(() => {
    			alert('Text copied to clipboard!');
    		});
    	}

    	function handleTextareaInput(event) {
    		const text = event.target.value;
    		loadNotation(text);
    	}

    	function loadFromText() {
    		loadNotation(document.getElementById('notationTextarea').value);
    	}

    	function savePosition() {
    		const positionData = { fen: chess.fen(), squareText };
    		$$invalidate(7, saveData = JSON.stringify(positionData));
    	}

    	function loadSavedPosition() {
    		if (saveData.trim() !== '') {
    			const positionData = JSON.parse(saveData);
    			chess.load(positionData.fen);
    			$$invalidate(0, board = chess.board());
    			$$invalidate(5, squareText = positionData.squareText);
    		}
    	}

    	onMount(() => {
    		loadStartingPosition();
    	});

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<ChessStudyTool> was created with unknown prop '${key}'`);
    	});

    	const click_handler = (rowIndex, colIndex) => handleSquareClick(rowIndex * 8 + colIndex);

    	const change_handler = e => {
    		$$invalidate(3, selectedGameIndex = e.target.value);
    	};

    	function select_change_handler() {
    		selectedSquare = select_value(this);
    		$$invalidate(1, selectedSquare);
    		$$invalidate(8, squareOptions);
    	}

    	function input1_input_handler() {
    		textInput = this.value;
    		$$invalidate(6, textInput);
    	}

    	function textarea1_input_handler() {
    		saveData = this.value;
    		$$invalidate(7, saveData);
    	}

    	$$self.$capture_state = () => ({
    		Chess,
    		onMount,
    		chess,
    		board,
    		selectedSquare,
    		moves,
    		currentMoveIndex,
    		pgnContent,
    		games,
    		selectedGameIndex,
    		previewText,
    		squareText,
    		textInput,
    		saveData,
    		squareOptions,
    		getSquareColor,
    		handleSquareClick,
    		addTextToSquare,
    		loadStartingPosition,
    		loadNotation,
    		nextMove,
    		handleFileUpload,
    		parsePgn,
    		loadSelectedGame,
    		copyToClipboard,
    		getPieceImage,
    		handleTextareaInput,
    		loadFromText,
    		savePosition,
    		loadSavedPosition
    	});

    	$$self.$inject_state = $$props => {
    		if ('chess' in $$props) chess = $$props.chess;
    		if ('board' in $$props) $$invalidate(0, board = $$props.board);
    		if ('selectedSquare' in $$props) $$invalidate(1, selectedSquare = $$props.selectedSquare);
    		if ('moves' in $$props) moves = $$props.moves;
    		if ('currentMoveIndex' in $$props) currentMoveIndex = $$props.currentMoveIndex;
    		if ('pgnContent' in $$props) pgnContent = $$props.pgnContent;
    		if ('games' in $$props) $$invalidate(2, games = $$props.games);
    		if ('selectedGameIndex' in $$props) $$invalidate(3, selectedGameIndex = $$props.selectedGameIndex);
    		if ('previewText' in $$props) $$invalidate(4, previewText = $$props.previewText);
    		if ('squareText' in $$props) $$invalidate(5, squareText = $$props.squareText);
    		if ('textInput' in $$props) $$invalidate(6, textInput = $$props.textInput);
    		if ('saveData' in $$props) $$invalidate(7, saveData = $$props.saveData);
    		if ('squareOptions' in $$props) $$invalidate(8, squareOptions = $$props.squareOptions);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		board,
    		selectedSquare,
    		games,
    		selectedGameIndex,
    		previewText,
    		squareText,
    		textInput,
    		saveData,
    		squareOptions,
    		handleSquareClick,
    		addTextToSquare,
    		loadStartingPosition,
    		nextMove,
    		handleFileUpload,
    		loadSelectedGame,
    		copyToClipboard,
    		handleTextareaInput,
    		loadFromText,
    		savePosition,
    		loadSavedPosition,
    		click_handler,
    		change_handler,
    		select_change_handler,
    		input1_input_handler,
    		textarea1_input_handler
    	];
    }

    class ChessStudyTool extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$4, create_fragment$4, safe_not_equal, {}, null, [-1, -1]);

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "ChessStudyTool",
    			options,
    			id: create_fragment$4.name
    		});
    	}
    }

    /*! js-yaml 4.1.0 https://github.com/nodeca/js-yaml @license MIT */
    function isNothing(subject) {
      return (typeof subject === 'undefined') || (subject === null);
    }


    function isObject(subject) {
      return (typeof subject === 'object') && (subject !== null);
    }


    function toArray(sequence) {
      if (Array.isArray(sequence)) return sequence;
      else if (isNothing(sequence)) return [];

      return [ sequence ];
    }


    function extend(target, source) {
      var index, length, key, sourceKeys;

      if (source) {
        sourceKeys = Object.keys(source);

        for (index = 0, length = sourceKeys.length; index < length; index += 1) {
          key = sourceKeys[index];
          target[key] = source[key];
        }
      }

      return target;
    }


    function repeat(string, count) {
      var result = '', cycle;

      for (cycle = 0; cycle < count; cycle += 1) {
        result += string;
      }

      return result;
    }


    function isNegativeZero(number) {
      return (number === 0) && (Number.NEGATIVE_INFINITY === 1 / number);
    }


    var isNothing_1      = isNothing;
    var isObject_1       = isObject;
    var toArray_1        = toArray;
    var repeat_1         = repeat;
    var isNegativeZero_1 = isNegativeZero;
    var extend_1         = extend;

    var common = {
    	isNothing: isNothing_1,
    	isObject: isObject_1,
    	toArray: toArray_1,
    	repeat: repeat_1,
    	isNegativeZero: isNegativeZero_1,
    	extend: extend_1
    };

    // YAML error class. http://stackoverflow.com/questions/8458984


    function formatError(exception, compact) {
      var where = '', message = exception.reason || '(unknown reason)';

      if (!exception.mark) return message;

      if (exception.mark.name) {
        where += 'in "' + exception.mark.name + '" ';
      }

      where += '(' + (exception.mark.line + 1) + ':' + (exception.mark.column + 1) + ')';

      if (!compact && exception.mark.snippet) {
        where += '\n\n' + exception.mark.snippet;
      }

      return message + ' ' + where;
    }


    function YAMLException$1(reason, mark) {
      // Super constructor
      Error.call(this);

      this.name = 'YAMLException';
      this.reason = reason;
      this.mark = mark;
      this.message = formatError(this, false);

      // Include stack trace in error object
      if (Error.captureStackTrace) {
        // Chrome and NodeJS
        Error.captureStackTrace(this, this.constructor);
      } else {
        // FF, IE 10+ and Safari 6+. Fallback for others
        this.stack = (new Error()).stack || '';
      }
    }


    // Inherit from Error
    YAMLException$1.prototype = Object.create(Error.prototype);
    YAMLException$1.prototype.constructor = YAMLException$1;


    YAMLException$1.prototype.toString = function toString(compact) {
      return this.name + ': ' + formatError(this, compact);
    };


    var exception = YAMLException$1;

    // get snippet for a single line, respecting maxLength
    function getLine(buffer, lineStart, lineEnd, position, maxLineLength) {
      var head = '';
      var tail = '';
      var maxHalfLength = Math.floor(maxLineLength / 2) - 1;

      if (position - lineStart > maxHalfLength) {
        head = ' ... ';
        lineStart = position - maxHalfLength + head.length;
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      if (lineEnd - position > maxHalfLength) {
        tail = ' ...';
        lineEnd = position + maxHalfLength - tail.length;
      }

      return {
        str: head + buffer.slice(lineStart, lineEnd).replace(/\t/g, '→') + tail,
        pos: position - lineStart + head.length // relative position
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    }


    function padStart(string, max) {
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    }


    function makeSnippet(mark, options) {
      options = Object.create(options || null);

      if (!mark.buffer) return null;

      if (!options.maxLength) options.maxLength = 79;
      if (typeof options.indent      !== 'number') options.indent      = 1;
      if (typeof options.linesBefore !== 'number') options.linesBefore = 3;
      if (typeof options.linesAfter  !== 'number') options.linesAfter  = 2;

      var re = /\r?\n|\r|\0/g;
      var lineStarts = [ 0 ];
      var lineEnds = [];
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      var foundLineNo = -1;

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        result = common.repeat(' ', options.indent) + padStart((mark.line - i + 1).toString(), lineNoLength) +
          ' | ' + line.str + '\n' + result;
      }

      line = getLine(mark.buffer, lineStarts[foundLineNo], lineEnds[foundLineNo], mark.position, maxLineLength);
      result += common.repeat(' ', options.indent) + padStart((mark.line + 1).toString(), lineNoLength) +
        ' | ' + line.str + '\n';
      result += common.repeat('-', options.indent + lineNoLength + 3 + line.pos) + '^' + '\n';

      for (i = 1; i <= options.linesAfter; i++) {
        if (foundLineNo + i >= lineEnds.length) break;
        line = getLine(
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          lineStarts[foundLineNo + i],
          lineEnds[foundLineNo + i],
          mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo + i]),
          maxLineLength
        );
        result += common.repeat(' ', options.indent) + padStart((mark.line + i + 1).toString(), lineNoLength) +
          ' | ' + line.str + '\n';
      }

      return result.replace(/\n$/, '');
    }


    var snippet = makeSnippet;

    var TYPE_CONSTRUCTOR_OPTIONS = [
      'kind',
      'multi',
      'resolve',
      'construct',
      'instanceOf',
      'predicate',
      'represent',
      'representName',
      'defaultStyle',
      'styleAliases'
    ];

    var YAML_NODE_KINDS = [
      'scalar',
      'sequence',
      'mapping'
    ];

    function compileStyleAliases(map) {
      var result = {};

      if (map !== null) {
        Object.keys(map).forEach(function (style) {
          map[style].forEach(function (alias) {
            result[String(alias)] = style;
          });
        });
      }

      return result;
    }

    function Type$1(tag, options) {
      options = options || {};

      Object.keys(options).forEach(function (name) {
        if (TYPE_CONSTRUCTOR_OPTIONS.indexOf(name) === -1) {
          throw new exception('Unknown option "' + name + '" is met in definition of "' + tag + '" YAML type.');
        }
      });

      // TODO: Add tag format check.
      this.options       = options; // keep original options in case user wants to extend this type later
      this.tag           = tag;
      this.kind          = options['kind']          || null;
      this.resolve       = options['resolve']       || function () { return true; };
      this.construct     = options['construct']     || function (data) { return data; };
      this.instanceOf    = options['instanceOf']    || null;
      this.predicate     = options['predicate']     || null;
      this.represent     = options['represent']     || null;
      this.representName = options['representName'] || null;
      this.defaultStyle  = options['defaultStyle']  || null;
      this.multi         = options['multi']         || false;
      this.styleAliases  = compileStyleAliases(options['styleAliases'] || null);

      if (YAML_NODE_KINDS.indexOf(this.kind) === -1) {
        throw new exception('Unknown kind "' + this.kind + '" is specified for "' + tag + '" YAML type.');
      }
    }

    var type = Type$1;

    /*eslint-disable max-len*/





    function compileList(schema, name) {
      var result = [];

      schema[name].forEach(function (currentType) {
        var newIndex = result.length;

        result.forEach(function (previousType, previousIndex) {
          if (previousType.tag === currentType.tag &&
              previousType.kind === currentType.kind &&
              previousType.multi === currentType.multi) {

            newIndex = previousIndex;
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        });

        result[newIndex] = currentType;
      });

      return result;
    }


    function compileMap(/* lists... */) {
      var result = {
            scalar: {},
            sequence: {},
            mapping: {},
            fallback: {},
            multi: {
              scalar: [],
              sequence: [],
              mapping: [],
              fallback: []
            }
          }, index, length;

      function collectType(type) {
        if (type.multi) {
          result.multi[type.kind].push(type);
          result.multi['fallback'].push(type);
        } else {
          result[type.kind][type.tag] = result['fallback'][type.tag] = type;
        }
      }

      for (index = 0, length = arguments.length; index < length; index += 1) {
        arguments[index].forEach(collectType);
      }
      return result;
    }


    function Schema$1(definition) {
      return this.extend(definition);
    }


    Schema$1.prototype.extend = function extend(definition) {
      var implicit = [];
      var explicit = [];

      if (definition instanceof type) {
        // Schema.extend(type)
        explicit.push(definition);

      } else if (Array.isArray(definition)) {
        // Schema.extend([ type1, type2, ... ])
        explicit = explicit.concat(definition);

      } else if (definition && (Array.isArray(definition.implicit) || Array.isArray(definition.explicit))) {
        // Schema.extend({ explicit: [ type1, type2, ... ], implicit: [ type1, type2, ... ] })
        if (definition.implicit) implicit = implicit.concat(definition.implicit);
        if (definition.explicit) explicit = explicit.concat(definition.explicit);

      } else {
        throw new exception('Schema.extend argument should be a Type, [ Type ], ' +
          'or a schema definition ({ implicit: [...], explicit: [...] })');
      }

      implicit.forEach(function (type$1) {
        if (!(type$1 instanceof type)) {
          throw new exception('Specified list of YAML types (or a single Type object) contains a non-Type object.');
        }

        if (type$1.loadKind && type$1.loadKind !== 'scalar') {
          throw new exception('There is a non-scalar type in the implicit list of a schema. Implicit resolving of such types is not supported.');
        }

        if (type$1.multi) {
          throw new exception('There is a multi type in the implicit list of a schema. Multi tags can only be listed as explicit.');
        }
      });

      explicit.forEach(function (type$1) {
        if (!(type$1 instanceof type)) {
          throw new exception('Specified list of YAML types (or a single Type object) contains a non-Type object.');
        }
      });

      var result = Object.create(Schema$1.prototype);

      result.implicit = (this.implicit || []).concat(implicit);
      result.explicit = (this.explicit || []).concat(explicit);

      result.compiledImplicit = compileList(result, 'implicit');
      result.compiledExplicit = compileList(result, 'explicit');
      result.compiledTypeMap  = compileMap(result.compiledImplicit, result.compiledExplicit);

      return result;
    };


    var schema = Schema$1;

    var str = new type('tag:yaml.org,2002:str', {
      kind: 'scalar',
      construct: function (data) { return data !== null ? data : ''; }
    });

    var seq = new type('tag:yaml.org,2002:seq', {
      kind: 'sequence',
      construct: function (data) { return data !== null ? data : []; }
    });

    var map = new type('tag:yaml.org,2002:map', {
      kind: 'mapping',
      construct: function (data) { return data !== null ? data : {}; }
    });

    var failsafe = new schema({
      explicit: [
        str,
        seq,
        map
      ]
    });

    function resolveYamlNull(data) {
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      var max = data.length;

      return (max === 1 && data === '~') ||
             (max === 4 && (data === 'null' || data === 'Null' || data === 'NULL'));
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    function constructYamlNull() {
      return null;
    }

    function isNull(object) {
      return object === null;
    }

    var _null = new type('tag:yaml.org,2002:null', {
      kind: 'scalar',
      resolve: resolveYamlNull,
      construct: constructYamlNull,
      predicate: isNull,
      represent: {
        canonical: function () { return '~';    },
        lowercase: function () { return 'null'; },
        uppercase: function () { return 'NULL'; },
        camelcase: function () { return 'Null'; },
        empty:     function () { return '';     }
      },
      defaultStyle: 'lowercase'
    });

    function resolveYamlBoolean(data) {
      if (data === null) return false;

      var max = data.length;

      return (max === 4 && (data === 'true' || data === 'True' || data === 'TRUE')) ||
             (max === 5 && (data === 'false' || data === 'False' || data === 'FALSE'));
    }

    function constructYamlBoolean(data) {
      return data === 'true' ||
             data === 'True' ||
             data === 'TRUE';
    }

    function isBoolean(object) {
      return Object.prototype.toString.call(object) === '[object Boolean]';
    }

    var bool = new type('tag:yaml.org,2002:bool', {
      kind: 'scalar',
      resolve: resolveYamlBoolean,
      construct: constructYamlBoolean,
      predicate: isBoolean,
      represent: {
        lowercase: function (object) { return object ? 'true' : 'false'; },
        uppercase: function (object) { return object ? 'TRUE' : 'FALSE'; },
        camelcase: function (object) { return object ? 'True' : 'False'; }
      },
      defaultStyle: 'lowercase'
    });

    function isHexCode(c) {
      return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) ||
             ((0x41/* A */ <= c) && (c <= 0x46/* F */)) ||
             ((0x61/* a */ <= c) && (c <= 0x66/* f */));
    }

    function isOctCode(c) {
      return ((0x30/* 0 */ <= c) && (c <= 0x37/* 7 */));
    }

    function isDecCode(c) {
      return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */));
    }

    function resolveYamlInteger(data) {
      if (data === null) return false;

      var max = data.length,
          index = 0,
          hasDigits = false,
          ch;

      if (!max) return false;

      ch = data[index];

      // sign
      if (ch === '-' || ch === '+') {
        ch = data[++index];
      }

      if (ch === '0') {
        // 0
        if (index + 1 === max) return true;
        ch = data[++index];

        // base 2, base 8, base 16

        if (ch === 'b') {
          // base 2
          index++;

          for (; index < max; index++) {
            ch = data[index];
            if (ch === '_') continue;
            if (ch !== '0' && ch !== '1') return false;
            hasDigits = true;
          }
          return hasDigits && ch !== '_';
        }


        if (ch === 'x') {
          // base 16
          index++;

          for (; index < max; index++) {
            ch = data[index];
            if (ch === '_') continue;
            if (!isHexCode(data.charCodeAt(index))) return false;
            hasDigits = true;
          }
          return hasDigits && ch !== '_';
        }


        if (ch === 'o') {
          // base 8
          index++;

          for (; index < max; index++) {
            ch = data[index];
            if (ch === '_') continue;
            if (!isOctCode(data.charCodeAt(index))) return false;
            hasDigits = true;
          }
          return hasDigits && ch !== '_';
        }
      }

      // base 10 (except 0)

      // value should not start with `_`;
      if (ch === '_') return false;

      for (; index < max; index++) {
        ch = data[index];
        if (ch === '_') continue;
        if (!isDecCode(data.charCodeAt(index))) {
          return false;
        }
        hasDigits = true;
      }

      // Should have digits and should not end with `_`
      if (!hasDigits || ch === '_') return false;

      return true;
    }

    function constructYamlInteger(data) {
      var value = data, sign = 1, ch;

      if (value.indexOf('_') !== -1) {
        value = value.replace(/_/g, '');
      }

      ch = value[0];

      if (ch === '-' || ch === '+') {
        if (ch === '-') sign = -1;
        value = value.slice(1);
        ch = value[0];
      }

      if (value === '0') return 0;

      if (ch === '0') {
        if (value[1] === 'b') return sign * parseInt(value.slice(2), 2);
        if (value[1] === 'x') return sign * parseInt(value.slice(2), 16);
        if (value[1] === 'o') return sign * parseInt(value.slice(2), 8);
      }

      return sign * parseInt(value, 10);
    }

    function isInteger(object) {
      return (Object.prototype.toString.call(object)) === '[object Number]' &&
             (object % 1 === 0 && !common.isNegativeZero(object));
    }

    var int = new type('tag:yaml.org,2002:int', {
      kind: 'scalar',
      resolve: resolveYamlInteger,
      construct: constructYamlInteger,
      predicate: isInteger,
      represent: {
        binary:      function (obj) { return obj >= 0 ? '0b' + obj.toString(2) : '-0b' + obj.toString(2).slice(1); },
        octal:       function (obj) { return obj >= 0 ? '0o'  + obj.toString(8) : '-0o'  + obj.toString(8).slice(1); },
        decimal:     function (obj) { return obj.toString(10); },
        /* eslint-disable max-len */
        hexadecimal: function (obj) { return obj >= 0 ? '0x' + obj.toString(16).toUpperCase() :  '-0x' + obj.toString(16).toUpperCase().slice(1); }
      },
      defaultStyle: 'decimal',
      styleAliases: {
        binary:      [ 2,  'bin' ],
        octal:       [ 8,  'oct' ],
        decimal:     [ 10, 'dec' ],
        hexadecimal: [ 16, 'hex' ]
      }
    });

    var YAML_FLOAT_PATTERN = new RegExp(
      // 2.5e4, 2.5 and integers
      '^(?:[-+]?(?:[0-9][0-9_]*)(?:\\.[0-9_]*)?(?:[eE][-+]?[0-9]+)?' +
      // .2e4, .2
      // special case, seems not from spec
      '|\\.[0-9_]+(?:[eE][-+]?[0-9]+)?' +
      // .inf
      '|[-+]?\\.(?:inf|Inf|INF)' +
      // .nan
      '|\\.(?:nan|NaN|NAN))$');

    function resolveYamlFloat(data) {
      if (data === null) return false;

      if (!YAML_FLOAT_PATTERN.test(data) ||
          // Quick hack to not allow integers end with `_`
          // Probably should update regexp & check speed
          data[data.length - 1] === '_') {
        return false;
      }

      return true;
    }

    function constructYamlFloat(data) {
      var value, sign;

      value  = data.replace(/_/g, '').toLowerCase();
      sign   = value[0] === '-' ? -1 : 1;

      if ('+-'.indexOf(value[0]) >= 0) {
        value = value.slice(1);
      }

      if (value === '.inf') {
        return (sign === 1) ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY;

      } else if (value === '.nan') {
        return NaN;
      }
      return sign * parseFloat(value, 10);
    }


    var SCIENTIFIC_WITHOUT_DOT = /^[-+]?[0-9]+e/;

    function representYamlFloat(object, style) {
      var res;

      if (isNaN(object)) {
        switch (style) {
          case 'lowercase': return '.nan';
          case 'uppercase': return '.NAN';
          case 'camelcase': return '.NaN';
        }
      } else if (Number.POSITIVE_INFINITY === object) {
        switch (style) {
          case 'lowercase': return '.inf';
          case 'uppercase': return '.INF';
          case 'camelcase': return '.Inf';
        }
      } else if (Number.NEGATIVE_INFINITY === object) {
        switch (style) {
          case 'lowercase': return '-.inf';
          case 'uppercase': return '-.INF';
          case 'camelcase': return '-.Inf';
        }
      } else if (common.isNegativeZero(object)) {
        return '-0.0';
      }

      res = object.toString(10);

      // JS stringifier can build scientific format without dots: 5e-100,
      // while YAML requres dot: 5.e-100. Fix it with simple hack

      return SCIENTIFIC_WITHOUT_DOT.test(res) ? res.replace('e', '.e') : res;
    }

    function isFloat(object) {
      return (Object.prototype.toString.call(object) === '[object Number]') &&
             (object % 1 !== 0 || common.isNegativeZero(object));
    }

    var float = new type('tag:yaml.org,2002:float', {
      kind: 'scalar',
      resolve: resolveYamlFloat,
      construct: constructYamlFloat,
      predicate: isFloat,
      represent: representYamlFloat,
      defaultStyle: 'lowercase'
    });

    var json = failsafe.extend({
      implicit: [
        _null,
        bool,
        int,
        float
      ]
    });

    var core = json;

    var YAML_DATE_REGEXP = new RegExp(
      '^([0-9][0-9][0-9][0-9])'          + // [1] year
      '-([0-9][0-9])'                    + // [2] month
      '-([0-9][0-9])$');                   // [3] day

    var YAML_TIMESTAMP_REGEXP = new RegExp(
      '^([0-9][0-9][0-9][0-9])'          + // [1] year
      '-([0-9][0-9]?)'                   + // [2] month
      '-([0-9][0-9]?)'                   + // [3] day
      '(?:[Tt]|[ \\t]+)'                 + // ...
      '([0-9][0-9]?)'                    + // [4] hour
      ':([0-9][0-9])'                    + // [5] minute
      ':([0-9][0-9])'                    + // [6] second
      '(?:\\.([0-9]*))?'                 + // [7] fraction
      '(?:[ \\t]*(Z|([-+])([0-9][0-9]?)' + // [8] tz [9] tz_sign [10] tz_hour
      '(?::([0-9][0-9]))?))?$');           // [11] tz_minute

    function resolveYamlTimestamp(data) {
      if (data === null) return false;
      if (YAML_DATE_REGEXP.exec(data) !== null) return true;
      if (YAML_TIMESTAMP_REGEXP.exec(data) !== null) return true;
      return false;
    }

    function constructYamlTimestamp(data) {
      var match, year, month, day, hour, minute, second, fraction = 0,
          delta = null, tz_hour, tz_minute, date;

      match = YAML_DATE_REGEXP.exec(data);
      if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(data);

      if (match === null) throw new Error('Date resolve error');

      // match: [1] year [2] month [3] day

      year = +(match[1]);
      month = +(match[2]) - 1; // JS month starts with 0
      day = +(match[3]);

      if (!match[4]) { // no hour
        return new Date(Date.UTC(year, month, day));
      }

      // match: [4] hour [5] minute [6] second [7] fraction

      hour = +(match[4]);
      minute = +(match[5]);
      second = +(match[6]);

      if (match[7]) {
        fraction = match[7].slice(0, 3);
        while (fraction.length < 3) { // milli-seconds
          fraction += '0';
        }
        fraction = +fraction;
      }

      // match: [8] tz [9] tz_sign [10] tz_hour [11] tz_minute

      if (match[9]) {
        tz_hour = +(match[10]);
        tz_minute = +(match[11] || 0);
        delta = (tz_hour * 60 + tz_minute) * 60000; // delta in mili-seconds
        if (match[9] === '-') delta = -delta;
      }

      date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction));

      if (delta) date.setTime(date.getTime() - delta);

      return date;
    }

    function representYamlTimestamp(object /*, style*/) {
      return object.toISOString();
    }

    var timestamp = new type('tag:yaml.org,2002:timestamp', {
      kind: 'scalar',
      resolve: resolveYamlTimestamp,
      construct: constructYamlTimestamp,
      instanceOf: Date,
      represent: representYamlTimestamp
    });

    function resolveYamlMerge(data) {
      return data === '<<' || data === null;
    }

    var merge = new type('tag:yaml.org,2002:merge', {
      kind: 'scalar',
      resolve: resolveYamlMerge
    });

    /*eslint-disable no-bitwise*/





    // [ 64, 65, 66 ] -> [ padding, CR, LF ]
    var BASE64_MAP = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\n\r';


    function resolveYamlBinary(data) {
      if (data === null) return false;

      var code, idx, bitlen = 0, max = data.length, map = BASE64_MAP;

      // Convert one by one.
      for (idx = 0; idx < max; idx++) {
        code = map.indexOf(data.charAt(idx));

        // Skip CR/LF
        if (code > 64) continue;

        // Fail on illegal characters
        if (code < 0) return false;

        bitlen += 6;
      }

      // If there are any bits left, source was corrupted
      return (bitlen % 8) === 0;
    }

    function constructYamlBinary(data) {
      var idx, tailbits,
          input = data.replace(/[\r\n=]/g, ''), // remove CR/LF & padding to simplify scan
          max = input.length,
          map = BASE64_MAP,
          bits = 0,
          result = [];

      // Collect by 6*4 bits (3 bytes)

      for (idx = 0; idx < max; idx++) {
        if ((idx % 4 === 0) && idx) {
          result.push((bits >> 16) & 0xFF);
          result.push((bits >> 8) & 0xFF);
          result.push(bits & 0xFF);
        }

        bits = (bits << 6) | map.indexOf(input.charAt(idx));
      }

      // Dump tail

      tailbits = (max % 4) * 6;

      if (tailbits === 0) {
        result.push((bits >> 16) & 0xFF);
        result.push((bits >> 8) & 0xFF);
        result.push(bits & 0xFF);
      } else if (tailbits === 18) {
        result.push((bits >> 10) & 0xFF);
        result.push((bits >> 2) & 0xFF);
      } else if (tailbits === 12) {
        result.push((bits >> 4) & 0xFF);
      }

      return new Uint8Array(result);
    }

    function representYamlBinary(object /*, style*/) {
      var result = '', bits = 0, idx, tail,
          max = object.length,
          map = BASE64_MAP;

      // Convert every three bytes to 4 ASCII characters.

      for (idx = 0; idx < max; idx++) {
        if ((idx % 3 === 0) && idx) {
          result += map[(bits >> 18) & 0x3F];
          result += map[(bits >> 12) & 0x3F];
          result += map[(bits >> 6) & 0x3F];
          result += map[bits & 0x3F];
        }

        bits = (bits << 8) + object[idx];
      }

      // Dump tail

      tail = max % 3;

      if (tail === 0) {
        result += map[(bits >> 18) & 0x3F];
        result += map[(bits >> 12) & 0x3F];
        result += map[(bits >> 6) & 0x3F];
        result += map[bits & 0x3F];
      } else if (tail === 2) {
        result += map[(bits >> 10) & 0x3F];
        result += map[(bits >> 4) & 0x3F];
        result += map[(bits << 2) & 0x3F];
        result += map[64];
      } else if (tail === 1) {
        result += map[(bits >> 2) & 0x3F];
        result += map[(bits << 4) & 0x3F];
        result += map[64];
        result += map[64];
      }

      return result;
    }

    function isBinary(obj) {
      return Object.prototype.toString.call(obj) ===  '[object Uint8Array]';
    }

    var binary = new type('tag:yaml.org,2002:binary', {
      kind: 'scalar',
      resolve: resolveYamlBinary,
      construct: constructYamlBinary,
      predicate: isBinary,
      represent: representYamlBinary
    });

    var _hasOwnProperty$3 = Object.prototype.hasOwnProperty;
    var _toString$2       = Object.prototype.toString;

    function resolveYamlOmap(data) {
      if (data === null) return true;

      var objectKeys = [], index, length, pair, pairKey, pairHasKey,
          object = data;

      for (index = 0, length = object.length; index < length; index += 1) {
        pair = object[index];
        pairHasKey = false;

        if (_toString$2.call(pair) !== '[object Object]') return false;

        for (pairKey in pair) {
          if (_hasOwnProperty$3.call(pair, pairKey)) {
            if (!pairHasKey) pairHasKey = true;
            else return false;
          }
        }

        if (!pairHasKey) return false;

        if (objectKeys.indexOf(pairKey) === -1) objectKeys.push(pairKey);
        else return false;
      }

      return true;
    }

    function constructYamlOmap(data) {
      return data !== null ? data : [];
    }

    var omap = new type('tag:yaml.org,2002:omap', {
      kind: 'sequence',
      resolve: resolveYamlOmap,
      construct: constructYamlOmap
    });

    var _toString$1 = Object.prototype.toString;

    function resolveYamlPairs(data) {
      if (data === null) return true;

      var index, length, pair, keys, result,
          object = data;

      result = new Array(object.length);

      for (index = 0, length = object.length; index < length; index += 1) {
        pair = object[index];

        if (_toString$1.call(pair) !== '[object Object]') return false;

        keys = Object.keys(pair);

        if (keys.length !== 1) return false;

        result[index] = [ keys[0], pair[keys[0]] ];
      }

      return true;
    }

    function constructYamlPairs(data) {
      if (data === null) return [];

      var index, length, pair, keys, result,
          object = data;

      result = new Array(object.length);

      for (index = 0, length = object.length; index < length; index += 1) {
        pair = object[index];

        keys = Object.keys(pair);

        result[index] = [ keys[0], pair[keys[0]] ];
      }

      return result;
    }

    var pairs = new type('tag:yaml.org,2002:pairs', {
      kind: 'sequence',
      resolve: resolveYamlPairs,
      construct: constructYamlPairs
    });

    var _hasOwnProperty$2 = Object.prototype.hasOwnProperty;

    function resolveYamlSet(data) {
      if (data === null) return true;

      var key, object = data;

      for (key in object) {
        if (_hasOwnProperty$2.call(object, key)) {
          if (object[key] !== null) return false;
        }
      }

      return true;
    }

    function constructYamlSet(data) {
      return data !== null ? data : {};
    }

    var set = new type('tag:yaml.org,2002:set', {
      kind: 'mapping',
      resolve: resolveYamlSet,
      construct: constructYamlSet
    });

    var _default = core.extend({
      implicit: [
        timestamp,
        merge
      ],
      explicit: [
        binary,
        omap,
        pairs,
        set
      ]
    });

    /*eslint-disable max-len,no-use-before-define*/







    var _hasOwnProperty$1 = Object.prototype.hasOwnProperty;


    var CONTEXT_FLOW_IN   = 1;
    var CONTEXT_FLOW_OUT  = 2;
    var CONTEXT_BLOCK_IN  = 3;
    var CONTEXT_BLOCK_OUT = 4;


    var CHOMPING_CLIP  = 1;
    var CHOMPING_STRIP = 2;
    var CHOMPING_KEEP  = 3;


    var PATTERN_NON_PRINTABLE         = /[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x84\x86-\x9F\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/;
    var PATTERN_NON_ASCII_LINE_BREAKS = /[\x85\u2028\u2029]/;
    var PATTERN_FLOW_INDICATORS       = /[,\[\]\{\}]/;
    var PATTERN_TAG_HANDLE            = /^(?:!|!!|![a-z\-]+!)$/i;
    var PATTERN_TAG_URI               = /^(?:!|[^,\[\]\{\}])(?:%[0-9a-f]{2}|[0-9a-z\-#;\/\?:@&=\+\$,_\.!~\*'\(\)\[\]])*$/i;


    function _class(obj) { return Object.prototype.toString.call(obj); }

    function is_EOL(c) {
      return (c === 0x0A/* LF */) || (c === 0x0D/* CR */);
    }

    function is_WHITE_SPACE(c) {
      return (c === 0x09/* Tab */) || (c === 0x20/* Space */);
    }

    function is_WS_OR_EOL(c) {
      return (c === 0x09/* Tab */) ||
             (c === 0x20/* Space */) ||
             (c === 0x0A/* LF */) ||
             (c === 0x0D/* CR */);
    }

    function is_FLOW_INDICATOR(c) {
      return c === 0x2C/* , */ ||
             c === 0x5B/* [ */ ||
             c === 0x5D/* ] */ ||
             c === 0x7B/* { */ ||
             c === 0x7D/* } */;
    }

    function fromHexCode(c) {
      var lc;

      if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {
        return c - 0x30;
      }

      /*eslint-disable no-bitwise*/
      lc = c | 0x20;

      if ((0x61/* a */ <= lc) && (lc <= 0x66/* f */)) {
        return lc - 0x61 + 10;
      }

      return -1;
    }

    function escapedHexLen(c) {
      if (c === 0x78/* x */) { return 2; }
      if (c === 0x75/* u */) { return 4; }
      if (c === 0x55/* U */) { return 8; }
      return 0;
    }

    function fromDecimalCode(c) {
      if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {
        return c - 0x30;
      }

      return -1;
    }

    function simpleEscapeSequence(c) {
      /* eslint-disable indent */
      return (c === 0x30/* 0 */) ? '\x00' :
            (c === 0x61/* a */) ? '\x07' :
            (c === 0x62/* b */) ? '\x08' :
            (c === 0x74/* t */) ? '\x09' :
            (c === 0x09/* Tab */) ? '\x09' :
            (c === 0x6E/* n */) ? '\x0A' :
            (c === 0x76/* v */) ? '\x0B' :
            (c === 0x66/* f */) ? '\x0C' :
            (c === 0x72/* r */) ? '\x0D' :
            (c === 0x65/* e */) ? '\x1B' :
            (c === 0x20/* Space */) ? ' ' :
            (c === 0x22/* " */) ? '\x22' :
            (c === 0x2F/* / */) ? '/' :
            (c === 0x5C/* \ */) ? '\x5C' :
            (c === 0x4E/* N */) ? '\x85' :
            (c === 0x5F/* _ */) ? '\xA0' :
            (c === 0x4C/* L */) ? '\u2028' :
            (c === 0x50/* P */) ? '\u2029' : '';
    }

    function charFromCodepoint(c) {
      if (c <= 0xFFFF) {
        return String.fromCharCode(c);
      }
      // Encode UTF-16 surrogate pair
      // https://en.wikipedia.org/wiki/UTF-16#Code_points_U.2B010000_to_U.2B10FFFF
      return String.fromCharCode(
        ((c - 0x010000) >> 10) + 0xD800,
        ((c - 0x010000) & 0x03FF) + 0xDC00
      );
    }

    var simpleEscapeCheck = new Array(256); // integer, for fast access
    var simpleEscapeMap = new Array(256);
    for (var i = 0; i < 256; i++) {
      simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0;
      simpleEscapeMap[i] = simpleEscapeSequence(i);
    }


    function State$1(input, options) {
      this.input = input;

      this.filename  = options['filename']  || null;
      this.schema    = options['schema']    || _default;
      this.onWarning = options['onWarning'] || null;
      // (Hidden) Remove? makes the loader to expect YAML 1.1 documents
      // if such documents have no explicit %YAML directive
      this.legacy    = options['legacy']    || false;

      this.json      = options['json']      || false;
      this.listener  = options['listener']  || null;

      this.implicitTypes = this.schema.compiledImplicit;
      this.typeMap       = this.schema.compiledTypeMap;

      this.length     = input.length;
      this.position   = 0;
      this.line       = 0;
      this.lineStart  = 0;
      this.lineIndent = 0;

      // position of first leading tab in the current line,
      // used to make sure there are no tabs in the indentation
      this.firstTabInLine = -1;

      this.documents = [];

      /*
      this.version;
      this.checkLineBreaks;
      this.tagMap;
      this.anchorMap;
      this.tag;
      this.anchor;
      this.kind;
      this.result;*/

    }


    function generateError(state, message) {
      var mark = {
        name:     state.filename,
        buffer:   state.input.slice(0, -1), // omit trailing \0
        position: state.position,
        line:     state.line,
        column:   state.position - state.lineStart
      };

      mark.snippet = snippet(mark);

      return new exception(message, mark);
    }

    function throwError(state, message) {
      throw generateError(state, message);
    }

    function throwWarning(state, message) {
      if (state.onWarning) {
        state.onWarning.call(null, generateError(state, message));
      }
    }


    var directiveHandlers = {

      YAML: function handleYamlDirective(state, name, args) {

        var match, major, minor;

        if (state.version !== null) {
          throwError(state, 'duplication of %YAML directive');
        }

        if (args.length !== 1) {
          throwError(state, 'YAML directive accepts exactly one argument');
        }

        match = /^([0-9]+)\.([0-9]+)$/.exec(args[0]);

        if (match === null) {
          throwError(state, 'ill-formed argument of the YAML directive');
        }

        major = parseInt(match[1], 10);
        minor = parseInt(match[2], 10);

        if (major !== 1) {
          throwError(state, 'unacceptable YAML version of the document');
        }

        state.version = args[0];
        state.checkLineBreaks = (minor < 2);

        if (minor !== 1 && minor !== 2) {
          throwWarning(state, 'unsupported YAML version of the document');
        }
      },

      TAG: function handleTagDirective(state, name, args) {

        var handle, prefix;

        if (args.length !== 2) {
          throwError(state, 'TAG directive accepts exactly two arguments');
        }

        handle = args[0];
        prefix = args[1];

        if (!PATTERN_TAG_HANDLE.test(handle)) {
          throwError(state, 'ill-formed tag handle (first argument) of the TAG directive');
        }

        if (_hasOwnProperty$1.call(state.tagMap, handle)) {
          throwError(state, 'there is a previously declared suffix for "' + handle + '" tag handle');
        }

        if (!PATTERN_TAG_URI.test(prefix)) {
          throwError(state, 'ill-formed tag prefix (second argument) of the TAG directive');
        }

        try {
          prefix = decodeURIComponent(prefix);
        } catch (err) {
          throwError(state, 'tag prefix is malformed: ' + prefix);
        }

        state.tagMap[handle] = prefix;
      }
    };


    function captureSegment(state, start, end, checkJson) {
      var _position, _length, _character, _result;

      if (start < end) {
        _result = state.input.slice(start, end);

        if (checkJson) {
          for (_position = 0, _length = _result.length; _position < _length; _position += 1) {
            _character = _result.charCodeAt(_position);
            if (!(_character === 0x09 ||
                  (0x20 <= _character && _character <= 0x10FFFF))) {
              throwError(state, 'expected valid JSON character');
            }
          }
        } else if (PATTERN_NON_PRINTABLE.test(_result)) {
          throwError(state, 'the stream contains non-printable characters');
        }

        state.result += _result;
      }
    }

    function mergeMappings(state, destination, source, overridableKeys) {
      var sourceKeys, key, index, quantity;

      if (!common.isObject(source)) {
        throwError(state, 'cannot merge mappings; the provided source object is unacceptable');
      }

      sourceKeys = Object.keys(source);

      for (index = 0, quantity = sourceKeys.length; index < quantity; index += 1) {
        key = sourceKeys[index];

        if (!_hasOwnProperty$1.call(destination, key)) {
          destination[key] = source[key];
          overridableKeys[key] = true;
        }
      }
    }

    function storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode,
      startLine, startLineStart, startPos) {

      var index, quantity;

      // The output is a plain object here, so keys can only be strings.
      // We need to convert keyNode to a string, but doing so can hang the process
      // (deeply nested arrays that explode exponentially using aliases).
      if (Array.isArray(keyNode)) {
        keyNode = Array.prototype.slice.call(keyNode);

        for (index = 0, quantity = keyNode.length; index < quantity; index += 1) {
          if (Array.isArray(keyNode[index])) {
            throwError(state, 'nested arrays are not supported inside keys');
          }

          if (typeof keyNode === 'object' && _class(keyNode[index]) === '[object Object]') {
            keyNode[index] = '[object Object]';
          }
        }
      }

      // Avoid code execution in load() via toString property
      // (still use its own toString for arrays, timestamps,
      // and whatever user schema extensions happen to have @@toStringTag)
      if (typeof keyNode === 'object' && _class(keyNode) === '[object Object]') {
        keyNode = '[object Object]';
      }


      keyNode = String(keyNode);

      if (_result === null) {
        _result = {};
      }

      if (keyTag === 'tag:yaml.org,2002:merge') {
        if (Array.isArray(valueNode)) {
          for (index = 0, quantity = valueNode.length; index < quantity; index += 1) {
            mergeMappings(state, _result, valueNode[index], overridableKeys);
          }
        } else {
          mergeMappings(state, _result, valueNode, overridableKeys);
        }
      } else {
        if (!state.json &&
            !_hasOwnProperty$1.call(overridableKeys, keyNode) &&
            _hasOwnProperty$1.call(_result, keyNode)) {
          state.line = startLine || state.line;
          state.lineStart = startLineStart || state.lineStart;
          state.position = startPos || state.position;
          throwError(state, 'duplicated mapping key');
        }

        // used for this specific key only because Object.defineProperty is slow
        if (keyNode === '__proto__') {
          Object.defineProperty(_result, keyNode, {
            configurable: true,
            enumerable: true,
            writable: true,
            value: valueNode
          });
        } else {
          _result[keyNode] = valueNode;
        }
        delete overridableKeys[keyNode];
      }

      return _result;
    }

    function readLineBreak(state) {
      var ch;

      ch = state.input.charCodeAt(state.position);

      if (ch === 0x0A/* LF */) {
        state.position++;
      } else if (ch === 0x0D/* CR */) {
        state.position++;
        if (state.input.charCodeAt(state.position) === 0x0A/* LF */) {
          state.position++;
        }
      } else {
        throwError(state, 'a line break is expected');
      }

      state.line += 1;
      state.lineStart = state.position;
      state.firstTabInLine = -1;
    }

    function skipSeparationSpace(state, allowComments, checkIndent) {
      var lineBreaks = 0,
          ch = state.input.charCodeAt(state.position);

      while (ch !== 0) {
        while (is_WHITE_SPACE(ch)) {
          if (ch === 0x09/* Tab */ && state.firstTabInLine === -1) {
            state.firstTabInLine = state.position;
          }
          ch = state.input.charCodeAt(++state.position);
        }

        if (allowComments && ch === 0x23/* # */) {
          do {
            ch = state.input.charCodeAt(++state.position);
          } while (ch !== 0x0A/* LF */ && ch !== 0x0D/* CR */ && ch !== 0);
        }

        if (is_EOL(ch)) {
          readLineBreak(state);

          ch = state.input.charCodeAt(state.position);
          lineBreaks++;
          state.lineIndent = 0;

          while (ch === 0x20/* Space */) {
            state.lineIndent++;
            ch = state.input.charCodeAt(++state.position);
          }
        } else {
          break;
        }
      }

      if (checkIndent !== -1 && lineBreaks !== 0 && state.lineIndent < checkIndent) {
        throwWarning(state, 'deficient indentation');
      }

      return lineBreaks;
    }

    function testDocumentSeparator(state) {
      var _position = state.position,
          ch;

      ch = state.input.charCodeAt(_position);

      // Condition state.position === state.lineStart is tested
      // in parent on each call, for efficiency. No needs to test here again.
      if ((ch === 0x2D/* - */ || ch === 0x2E/* . */) &&
          ch === state.input.charCodeAt(_position + 1) &&
          ch === state.input.charCodeAt(_position + 2)) {

        _position += 3;

        ch = state.input.charCodeAt(_position);

        if (ch === 0 || is_WS_OR_EOL(ch)) {
          return true;
        }
      }

      return false;
    }

    function writeFoldedLines(state, count) {
      if (count === 1) {
        state.result += ' ';
      } else if (count > 1) {
        state.result += common.repeat('\n', count - 1);
      }
    }


    function readPlainScalar(state, nodeIndent, withinFlowCollection) {
      var preceding,
          following,
          captureStart,
          captureEnd,
          hasPendingContent,
          _line,
          _lineStart,
          _lineIndent,
          _kind = state.kind,
          _result = state.result,
          ch;

      ch = state.input.charCodeAt(state.position);

      if (is_WS_OR_EOL(ch)      ||
          is_FLOW_INDICATOR(ch) ||
          ch === 0x23/* # */    ||
          ch === 0x26/* & */    ||
          ch === 0x2A/* * */    ||
          ch === 0x21/* ! */    ||
          ch === 0x7C/* | */    ||
          ch === 0x3E/* > */    ||
          ch === 0x27/* ' */    ||
          ch === 0x22/* " */    ||
          ch === 0x25/* % */    ||
          ch === 0x40/* @ */    ||
          ch === 0x60/* ` */) {
        return false;
      }

      if (ch === 0x3F/* ? */ || ch === 0x2D/* - */) {
        following = state.input.charCodeAt(state.position + 1);

        if (is_WS_OR_EOL(following) ||
            withinFlowCollection && is_FLOW_INDICATOR(following)) {
          return false;
        }
      }

      state.kind = 'scalar';
      state.result = '';
      captureStart = captureEnd = state.position;
      hasPendingContent = false;

      while (ch !== 0) {
        if (ch === 0x3A/* : */) {
          following = state.input.charCodeAt(state.position + 1);

          if (is_WS_OR_EOL(following) ||
              withinFlowCollection && is_FLOW_INDICATOR(following)) {
            break;
          }

        } else if (ch === 0x23/* # */) {
          preceding = state.input.charCodeAt(state.position - 1);

          if (is_WS_OR_EOL(preceding)) {
            break;
          }

        } else if ((state.position === state.lineStart && testDocumentSeparator(state)) ||
                   withinFlowCollection && is_FLOW_INDICATOR(ch)) {
          break;

        } else if (is_EOL(ch)) {
          _line = state.line;
          _lineStart = state.lineStart;
          _lineIndent = state.lineIndent;
          skipSeparationSpace(state, false, -1);

          if (state.lineIndent >= nodeIndent) {
            hasPendingContent = true;
            ch = state.input.charCodeAt(state.position);
            continue;
          } else {
            state.position = captureEnd;
            state.line = _line;
            state.lineStart = _lineStart;
            state.lineIndent = _lineIndent;
            break;
          }
        }

        if (hasPendingContent) {
          captureSegment(state, captureStart, captureEnd, false);
          writeFoldedLines(state, state.line - _line);
          captureStart = captureEnd = state.position;
          hasPendingContent = false;
        }

        if (!is_WHITE_SPACE(ch)) {
          captureEnd = state.position + 1;
        }

        ch = state.input.charCodeAt(++state.position);
      }

      captureSegment(state, captureStart, captureEnd, false);

      if (state.result) {
        return true;
      }

      state.kind = _kind;
      state.result = _result;
      return false;
    }

    function readSingleQuotedScalar(state, nodeIndent) {
      var ch,
          captureStart, captureEnd;

      ch = state.input.charCodeAt(state.position);

      if (ch !== 0x27/* ' */) {
        return false;
      }

      state.kind = 'scalar';
      state.result = '';
      state.position++;
      captureStart = captureEnd = state.position;

      while ((ch = state.input.charCodeAt(state.position)) !== 0) {
        if (ch === 0x27/* ' */) {
          captureSegment(state, captureStart, state.position, true);
          ch = state.input.charCodeAt(++state.position);

          if (ch === 0x27/* ' */) {
            captureStart = state.position;
            state.position++;
            captureEnd = state.position;
          } else {
            return true;
          }

        } else if (is_EOL(ch)) {
          captureSegment(state, captureStart, captureEnd, true);
          writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
          captureStart = captureEnd = state.position;

        } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
          throwError(state, 'unexpected end of the document within a single quoted scalar');

        } else {
          state.position++;
          captureEnd = state.position;
        }
      }

      throwError(state, 'unexpected end of the stream within a single quoted scalar');
    }

    function readDoubleQuotedScalar(state, nodeIndent) {
      var captureStart,
          captureEnd,
          hexLength,
          hexResult,
          tmp,
          ch;

      ch = state.input.charCodeAt(state.position);

      if (ch !== 0x22/* " */) {
        return false;
      }

      state.kind = 'scalar';
      state.result = '';
      state.position++;
      captureStart = captureEnd = state.position;

      while ((ch = state.input.charCodeAt(state.position)) !== 0) {
        if (ch === 0x22/* " */) {
          captureSegment(state, captureStart, state.position, true);
          state.position++;
          return true;

        } else if (ch === 0x5C/* \ */) {
          captureSegment(state, captureStart, state.position, true);
          ch = state.input.charCodeAt(++state.position);

          if (is_EOL(ch)) {
            skipSeparationSpace(state, false, nodeIndent);

            // TODO: rework to inline fn with no type cast?
          } else if (ch < 256 && simpleEscapeCheck[ch]) {
            state.result += simpleEscapeMap[ch];
            state.position++;

          } else if ((tmp = escapedHexLen(ch)) > 0) {
            hexLength = tmp;
            hexResult = 0;

            for (; hexLength > 0; hexLength--) {
              ch = state.input.charCodeAt(++state.position);

              if ((tmp = fromHexCode(ch)) >= 0) {
                hexResult = (hexResult << 4) + tmp;

              } else {
                throwError(state, 'expected hexadecimal character');
              }
            }

            state.result += charFromCodepoint(hexResult);

            state.position++;

          } else {
            throwError(state, 'unknown escape sequence');
          }

          captureStart = captureEnd = state.position;

        } else if (is_EOL(ch)) {
          captureSegment(state, captureStart, captureEnd, true);
          writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
          captureStart = captureEnd = state.position;

        } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
          throwError(state, 'unexpected end of the document within a double quoted scalar');

        } else {
          state.position++;
          captureEnd = state.position;
        }
      }

      throwError(state, 'unexpected end of the stream within a double quoted scalar');
    }

    function readFlowCollection(state, nodeIndent) {
      var readNext = true,
          _line,
          _lineStart,
          _pos,
          _tag     = state.tag,
          _result,
          _anchor  = state.anchor,
          following,
          terminator,
          isPair,
          isExplicitPair,
          isMapping,
          overridableKeys = Object.create(null),
          keyNode,
          keyTag,
          valueNode,
          ch;

      ch = state.input.charCodeAt(state.position);

      if (ch === 0x5B/* [ */) {
        terminator = 0x5D;/* ] */
        isMapping = false;
        _result = [];
      } else if (ch === 0x7B/* { */) {
        terminator = 0x7D;/* } */
        isMapping = true;
        _result = {};
      } else {
        return false;
      }

      if (state.anchor !== null) {
        state.anchorMap[state.anchor] = _result;
      }

      ch = state.input.charCodeAt(++state.position);

      while (ch !== 0) {
        skipSeparationSpace(state, true, nodeIndent);

        ch = state.input.charCodeAt(state.position);

        if (ch === terminator) {
          state.position++;
          state.tag = _tag;
          state.anchor = _anchor;
          state.kind = isMapping ? 'mapping' : 'sequence';
          state.result = _result;
          return true;
        } else if (!readNext) {
          throwError(state, 'missed comma between flow collection entries');
        } else if (ch === 0x2C/* , */) {
          // "flow collection entries can never be completely empty", as per YAML 1.2, section 7.4
          throwError(state, "expected the node content, but found ','");
        }

        keyTag = keyNode = valueNode = null;
        isPair = isExplicitPair = false;

        if (ch === 0x3F/* ? */) {
          following = state.input.charCodeAt(state.position + 1);

          if (is_WS_OR_EOL(following)) {
            isPair = isExplicitPair = true;
            state.position++;
            skipSeparationSpace(state, true, nodeIndent);
          }
        }

        _line = state.line; // Save the current line.
        _lineStart = state.lineStart;
        _pos = state.position;
        composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
        keyTag = state.tag;
        keyNode = state.result;
        skipSeparationSpace(state, true, nodeIndent);

        ch = state.input.charCodeAt(state.position);

        if ((isExplicitPair || state.line === _line) && ch === 0x3A/* : */) {
          isPair = true;
          ch = state.input.charCodeAt(++state.position);
          skipSeparationSpace(state, true, nodeIndent);
          composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
          valueNode = state.result;
        }

        if (isMapping) {
          storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos);
        } else if (isPair) {
          _result.push(storeMappingPair(state, null, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos));
        } else {
          _result.push(keyNode);
        }

        skipSeparationSpace(state, true, nodeIndent);

        ch = state.input.charCodeAt(state.position);

        if (ch === 0x2C/* , */) {
          readNext = true;
          ch = state.input.charCodeAt(++state.position);
        } else {
          readNext = false;
        }
      }

      throwError(state, 'unexpected end of the stream within a flow collection');
    }

    function readBlockScalar(state, nodeIndent) {
      var captureStart,
          folding,
          chomping       = CHOMPING_CLIP,
          didReadContent = false,
          detectedIndent = false,
          textIndent     = nodeIndent,
          emptyLines     = 0,
          atMoreIndented = false,
          tmp,
          ch;

      ch = state.input.charCodeAt(state.position);

      if (ch === 0x7C/* | */) {
        folding = false;
      } else if (ch === 0x3E/* > */) {
        folding = true;
      } else {
        return false;
      }

      state.kind = 'scalar';
      state.result = '';

      while (ch !== 0) {
        ch = state.input.charCodeAt(++state.position);

        if (ch === 0x2B/* + */ || ch === 0x2D/* - */) {
          if (CHOMPING_CLIP === chomping) {
            chomping = (ch === 0x2B/* + */) ? CHOMPING_KEEP : CHOMPING_STRIP;
          } else {
            throwError(state, 'repeat of a chomping mode identifier');
          }

        } else if ((tmp = fromDecimalCode(ch)) >= 0) {
          if (tmp === 0) {
            throwError(state, 'bad explicit indentation width of a block scalar; it cannot be less than one');
          } else if (!detectedIndent) {
            textIndent = nodeIndent + tmp - 1;
            detectedIndent = true;
          } else {
            throwError(state, 'repeat of an indentation width identifier');
          }

        } else {
          break;
        }
      }

      if (is_WHITE_SPACE(ch)) {
        do { ch = state.input.charCodeAt(++state.position); }
        while (is_WHITE_SPACE(ch));

        if (ch === 0x23/* # */) {
          do { ch = state.input.charCodeAt(++state.position); }
          while (!is_EOL(ch) && (ch !== 0));
        }
      }

      while (ch !== 0) {
        readLineBreak(state);
        state.lineIndent = 0;

        ch = state.input.charCodeAt(state.position);

        while ((!detectedIndent || state.lineIndent < textIndent) &&
               (ch === 0x20/* Space */)) {
          state.lineIndent++;
          ch = state.input.charCodeAt(++state.position);
        }

        if (!detectedIndent && state.lineIndent > textIndent) {
          textIndent = state.lineIndent;
        }

        if (is_EOL(ch)) {
          emptyLines++;
          continue;
        }

        // End of the scalar.
        if (state.lineIndent < textIndent) {

          // Perform the chomping.
          if (chomping === CHOMPING_KEEP) {
            state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
          } else if (chomping === CHOMPING_CLIP) {
            if (didReadContent) { // i.e. only if the scalar is not empty.
              state.result += '\n';
            }
          }

          // Break this `while` cycle and go to the funciton's epilogue.
          break;
        }

        // Folded style: use fancy rules to handle line breaks.
        if (folding) {

          // Lines starting with white space characters (more-indented lines) are not folded.
          if (is_WHITE_SPACE(ch)) {
            atMoreIndented = true;
            // except for the first content line (cf. Example 8.1)
            state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);

          // End of more-indented block.
          } else if (atMoreIndented) {
            atMoreIndented = false;
            state.result += common.repeat('\n', emptyLines + 1);

          // Just one line break - perceive as the same line.
          } else if (emptyLines === 0) {
            if (didReadContent) { // i.e. only if we have already read some scalar content.
              state.result += ' ';
            }

          // Several line breaks - perceive as different lines.
          } else {
            state.result += common.repeat('\n', emptyLines);
          }

        // Literal style: just add exact number of line breaks between content lines.
        } else {
          // Keep all line breaks except the header line break.
          state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
        }

        didReadContent = true;
        detectedIndent = true;
        emptyLines = 0;
        captureStart = state.position;

        while (!is_EOL(ch) && (ch !== 0)) {
          ch = state.input.charCodeAt(++state.position);
        }

        captureSegment(state, captureStart, state.position, false);
      }

      return true;
    }

    function readBlockSequence(state, nodeIndent) {
      var _line,
          _tag      = state.tag,
          _anchor   = state.anchor,
          _result   = [],
          following,
          detected  = false,
          ch;

      // there is a leading tab before this token, so it can't be a block sequence/mapping;
      // it can still be flow sequence/mapping or a scalar
      if (state.firstTabInLine !== -1) return false;

      if (state.anchor !== null) {
        state.anchorMap[state.anchor] = _result;
      }

      ch = state.input.charCodeAt(state.position);

      while (ch !== 0) {
        if (state.firstTabInLine !== -1) {
          state.position = state.firstTabInLine;
          throwError(state, 'tab characters must not be used in indentation');
        }

        if (ch !== 0x2D/* - */) {
          break;
        }

        following = state.input.charCodeAt(state.position + 1);

        if (!is_WS_OR_EOL(following)) {
          break;
        }

        detected = true;
        state.position++;

        if (skipSeparationSpace(state, true, -1)) {
          if (state.lineIndent <= nodeIndent) {
            _result.push(null);
            ch = state.input.charCodeAt(state.position);
            continue;
          }
        }

        _line = state.line;
        composeNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true);
        _result.push(state.result);
        skipSeparationSpace(state, true, -1);

        ch = state.input.charCodeAt(state.position);

        if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {
          throwError(state, 'bad indentation of a sequence entry');
        } else if (state.lineIndent < nodeIndent) {
          break;
        }
      }

      if (detected) {
        state.tag = _tag;
        state.anchor = _anchor;
        state.kind = 'sequence';
        state.result = _result;
        return true;
      }
      return false;
    }

    function readBlockMapping(state, nodeIndent, flowIndent) {
      var following,
          allowCompact,
          _line,
          _keyLine,
          _keyLineStart,
          _keyPos,
          _tag          = state.tag,
          _anchor       = state.anchor,
          _result       = {},
          overridableKeys = Object.create(null),
          keyTag        = null,
          keyNode       = null,
          valueNode     = null,
          atExplicitKey = false,
          detected      = false,
          ch;

      // there is a leading tab before this token, so it can't be a block sequence/mapping;
      // it can still be flow sequence/mapping or a scalar
      if (state.firstTabInLine !== -1) return false;

      if (state.anchor !== null) {
        state.anchorMap[state.anchor] = _result;
      }

      ch = state.input.charCodeAt(state.position);

      while (ch !== 0) {
        if (!atExplicitKey && state.firstTabInLine !== -1) {
          state.position = state.firstTabInLine;
          throwError(state, 'tab characters must not be used in indentation');
        }

        following = state.input.charCodeAt(state.position + 1);
        _line = state.line; // Save the current line.

        //
        // Explicit notation case. There are two separate blocks:
        // first for the key (denoted by "?") and second for the value (denoted by ":")
        //
        if ((ch === 0x3F/* ? */ || ch === 0x3A/* : */) && is_WS_OR_EOL(following)) {

          if (ch === 0x3F/* ? */) {
            if (atExplicitKey) {
              storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
              keyTag = keyNode = valueNode = null;
            }

            detected = true;
            atExplicitKey = true;
            allowCompact = true;

          } else if (atExplicitKey) {
            // i.e. 0x3A/* : */ === character after the explicit key.
            atExplicitKey = false;
            allowCompact = true;

          } else {
            throwError(state, 'incomplete explicit mapping pair; a key node is missed; or followed by a non-tabulated empty line');
          }

          state.position += 1;
          ch = following;

        //
        // Implicit notation case. Flow-style node as the key first, then ":", and the value.
        //
        } else {
          _keyLine = state.line;
          _keyLineStart = state.lineStart;
          _keyPos = state.position;

          if (!composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) {
            // Neither implicit nor explicit notation.
            // Reading is done. Go to the epilogue.
            break;
          }

          if (state.line === _line) {
            ch = state.input.charCodeAt(state.position);

            while (is_WHITE_SPACE(ch)) {
              ch = state.input.charCodeAt(++state.position);
            }

            if (ch === 0x3A/* : */) {
              ch = state.input.charCodeAt(++state.position);

              if (!is_WS_OR_EOL(ch)) {
                throwError(state, 'a whitespace character is expected after the key-value separator within a block mapping');
              }

              if (atExplicitKey) {
                storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
                keyTag = keyNode = valueNode = null;
              }

              detected = true;
              atExplicitKey = false;
              allowCompact = false;
              keyTag = state.tag;
              keyNode = state.result;

            } else if (detected) {
              throwError(state, 'can not read an implicit mapping pair; a colon is missed');

            } else {
              state.tag = _tag;
              state.anchor = _anchor;
              return true; // Keep the result of `composeNode`.
            }

          } else if (detected) {
            throwError(state, 'can not read a block mapping entry; a multiline key may not be an implicit key');

          } else {
            state.tag = _tag;
            state.anchor = _anchor;
            return true; // Keep the result of `composeNode`.
          }
        }

        //
        // Common reading code for both explicit and implicit notations.
        //
        if (state.line === _line || state.lineIndent > nodeIndent) {
          if (atExplicitKey) {
            _keyLine = state.line;
            _keyLineStart = state.lineStart;
            _keyPos = state.position;
          }

          if (composeNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, allowCompact)) {
            if (atExplicitKey) {
              keyNode = state.result;
            } else {
              valueNode = state.result;
            }
          }

          if (!atExplicitKey) {
            storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _keyLine, _keyLineStart, _keyPos);
            keyTag = keyNode = valueNode = null;
          }

          skipSeparationSpace(state, true, -1);
          ch = state.input.charCodeAt(state.position);
        }

        if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {
          throwError(state, 'bad indentation of a mapping entry');
        } else if (state.lineIndent < nodeIndent) {
          break;
        }
      }

      //
      // Epilogue.
      //

      // Special case: last mapping's node contains only the key in explicit notation.
      if (atExplicitKey) {
        storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
      }

      // Expose the resulting mapping.
      if (detected) {
        state.tag = _tag;
        state.anchor = _anchor;
        state.kind = 'mapping';
        state.result = _result;
      }

      return detected;
    }

    function readTagProperty(state) {
      var _position,
          isVerbatim = false,
          isNamed    = false,
          tagHandle,
          tagName,
          ch;

      ch = state.input.charCodeAt(state.position);

      if (ch !== 0x21/* ! */) return false;

      if (state.tag !== null) {
        throwError(state, 'duplication of a tag property');
      }

      ch = state.input.charCodeAt(++state.position);

      if (ch === 0x3C/* < */) {
        isVerbatim = true;
        ch = state.input.charCodeAt(++state.position);

      } else if (ch === 0x21/* ! */) {
        isNamed = true;
        tagHandle = '!!';
        ch = state.input.charCodeAt(++state.position);

      } else {
        tagHandle = '!';
      }

      _position = state.position;

      if (isVerbatim) {
        do { ch = state.input.charCodeAt(++state.position); }
        while (ch !== 0 && ch !== 0x3E/* > */);

        if (state.position < state.length) {
          tagName = state.input.slice(_position, state.position);
          ch = state.input.charCodeAt(++state.position);
        } else {
          throwError(state, 'unexpected end of the stream within a verbatim tag');
        }
      } else {
        while (ch !== 0 && !is_WS_OR_EOL(ch)) {

          if (ch === 0x21/* ! */) {
            if (!isNamed) {
              tagHandle = state.input.slice(_position - 1, state.position + 1);

              if (!PATTERN_TAG_HANDLE.test(tagHandle)) {
                throwError(state, 'named tag handle cannot contain such characters');
              }

              isNamed = true;
              _position = state.position + 1;
            } else {
              throwError(state, 'tag suffix cannot contain exclamation marks');
            }
          }

          ch = state.input.charCodeAt(++state.position);
        }

        tagName = state.input.slice(_position, state.position);

        if (PATTERN_FLOW_INDICATORS.test(tagName)) {
          throwError(state, 'tag suffix cannot contain flow indicator characters');
        }
      }

      if (tagName && !PATTERN_TAG_URI.test(tagName)) {
        throwError(state, 'tag name cannot contain such characters: ' + tagName);
      }

      try {
        tagName = decodeURIComponent(tagName);
      } catch (err) {
        throwError(state, 'tag name is malformed: ' + tagName);
      }

      if (isVerbatim) {
        state.tag = tagName;

      } else if (_hasOwnProperty$1.call(state.tagMap, tagHandle)) {
        state.tag = state.tagMap[tagHandle] + tagName;

      } else if (tagHandle === '!') {
        state.tag = '!' + tagName;

      } else if (tagHandle === '!!') {
        state.tag = 'tag:yaml.org,2002:' + tagName;

      } else {
        throwError(state, 'undeclared tag handle "' + tagHandle + '"');
      }

      return true;
    }

    function readAnchorProperty(state) {
      var _position,
          ch;

      ch = state.input.charCodeAt(state.position);

      if (ch !== 0x26/* & */) return false;

      if (state.anchor !== null) {
        throwError(state, 'duplication of an anchor property');
      }

      ch = state.input.charCodeAt(++state.position);
      _position = state.position;

      while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
        ch = state.input.charCodeAt(++state.position);
      }

      if (state.position === _position) {
        throwError(state, 'name of an anchor node must contain at least one character');
      }

      state.anchor = state.input.slice(_position, state.position);
      return true;
    }

    function readAlias(state) {
      var _position, alias,
          ch;

      ch = state.input.charCodeAt(state.position);

      if (ch !== 0x2A/* * */) return false;

      ch = state.input.charCodeAt(++state.position);
      _position = state.position;

      while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
        ch = state.input.charCodeAt(++state.position);
      }

      if (state.position === _position) {
        throwError(state, 'name of an alias node must contain at least one character');
      }

      alias = state.input.slice(_position, state.position);

      if (!_hasOwnProperty$1.call(state.anchorMap, alias)) {
        throwError(state, 'unidentified alias "' + alias + '"');
      }

      state.result = state.anchorMap[alias];
      skipSeparationSpace(state, true, -1);
      return true;
    }

    function composeNode(state, parentIndent, nodeContext, allowToSeek, allowCompact) {
      var allowBlockStyles,
          allowBlockScalars,
          allowBlockCollections,
          indentStatus = 1, // 1: this>parent, 0: this=parent, -1: this<parent
          atNewLine  = false,
          hasContent = false,
          typeIndex,
          typeQuantity,
          typeList,
          type,
          flowIndent,
          blockIndent;

      if (state.listener !== null) {
        state.listener('open', state);
      }

      state.tag    = null;
      state.anchor = null;
      state.kind   = null;
      state.result = null;

      allowBlockStyles = allowBlockScalars = allowBlockCollections =
        CONTEXT_BLOCK_OUT === nodeContext ||
        CONTEXT_BLOCK_IN  === nodeContext;

      if (allowToSeek) {
        if (skipSeparationSpace(state, true, -1)) {
          atNewLine = true;

          if (state.lineIndent > parentIndent) {
            indentStatus = 1;
          } else if (state.lineIndent === parentIndent) {
            indentStatus = 0;
          } else if (state.lineIndent < parentIndent) {
            indentStatus = -1;
          }
        }
      }

      if (indentStatus === 1) {
        while (readTagProperty(state) || readAnchorProperty(state)) {
          if (skipSeparationSpace(state, true, -1)) {
            atNewLine = true;
            allowBlockCollections = allowBlockStyles;

            if (state.lineIndent > parentIndent) {
              indentStatus = 1;
            } else if (state.lineIndent === parentIndent) {
              indentStatus = 0;
            } else if (state.lineIndent < parentIndent) {
              indentStatus = -1;
            }
          } else {
            allowBlockCollections = false;
          }
        }
      }

      if (allowBlockCollections) {
        allowBlockCollections = atNewLine || allowCompact;
      }

      if (indentStatus === 1 || CONTEXT_BLOCK_OUT === nodeContext) {
        if (CONTEXT_FLOW_IN === nodeContext || CONTEXT_FLOW_OUT === nodeContext) {
          flowIndent = parentIndent;
        } else {
          flowIndent = parentIndent + 1;
        }

        blockIndent = state.position - state.lineStart;

        if (indentStatus === 1) {
          if (allowBlockCollections &&
              (readBlockSequence(state, blockIndent) ||
               readBlockMapping(state, blockIndent, flowIndent)) ||
              readFlowCollection(state, flowIndent)) {
            hasContent = true;
          } else {
            if ((allowBlockScalars && readBlockScalar(state, flowIndent)) ||
                readSingleQuotedScalar(state, flowIndent) ||
                readDoubleQuotedScalar(state, flowIndent)) {
              hasContent = true;

            } else if (readAlias(state)) {
              hasContent = true;

              if (state.tag !== null || state.anchor !== null) {
                throwError(state, 'alias node should not have any properties');
              }

            } else if (readPlainScalar(state, flowIndent, CONTEXT_FLOW_IN === nodeContext)) {
              hasContent = true;

              if (state.tag === null) {
                state.tag = '?';
              }
            }

            if (state.anchor !== null) {
              state.anchorMap[state.anchor] = state.result;
            }
          }
        } else if (indentStatus === 0) {
          // Special case: block sequences are allowed to have same indentation level as the parent.
          // http://www.yaml.org/spec/1.2/spec.html#id2799784
          hasContent = allowBlockCollections && readBlockSequence(state, blockIndent);
        }
      }

      if (state.tag === null) {
        if (state.anchor !== null) {
          state.anchorMap[state.anchor] = state.result;
        }

      } else if (state.tag === '?') {
        // Implicit resolving is not allowed for non-scalar types, and '?'
        // non-specific tag is only automatically assigned to plain scalars.
        //
        // We only need to check kind conformity in case user explicitly assigns '?'
        // tag, for example like this: "!<?> [0]"
        //
        if (state.result !== null && state.kind !== 'scalar') {
          throwError(state, 'unacceptable node kind for !<?> tag; it should be "scalar", not "' + state.kind + '"');
        }

        for (typeIndex = 0, typeQuantity = state.implicitTypes.length; typeIndex < typeQuantity; typeIndex += 1) {
          type = state.implicitTypes[typeIndex];

          if (type.resolve(state.result)) { // `state.result` updated in resolver if matched
            state.result = type.construct(state.result);
            state.tag = type.tag;
            if (state.anchor !== null) {
              state.anchorMap[state.anchor] = state.result;
            }
            break;
          }
        }
      } else if (state.tag !== '!') {
        if (_hasOwnProperty$1.call(state.typeMap[state.kind || 'fallback'], state.tag)) {
          type = state.typeMap[state.kind || 'fallback'][state.tag];
        } else {
          // looking for multi type
          type = null;
          typeList = state.typeMap.multi[state.kind || 'fallback'];

          for (typeIndex = 0, typeQuantity = typeList.length; typeIndex < typeQuantity; typeIndex += 1) {
            if (state.tag.slice(0, typeList[typeIndex].tag.length) === typeList[typeIndex].tag) {
              type = typeList[typeIndex];
              break;
            }
          }
        }

        if (!type) {
          throwError(state, 'unknown tag !<' + state.tag + '>');
        }

        if (state.result !== null && type.kind !== state.kind) {
          throwError(state, 'unacceptable node kind for !<' + state.tag + '> tag; it should be "' + type.kind + '", not "' + state.kind + '"');
        }

        if (!type.resolve(state.result, state.tag)) { // `state.result` updated in resolver if matched
          throwError(state, 'cannot resolve a node with !<' + state.tag + '> explicit tag');
        } else {
          state.result = type.construct(state.result, state.tag);
          if (state.anchor !== null) {
            state.anchorMap[state.anchor] = state.result;
          }
        }
      }

      if (state.listener !== null) {
        state.listener('close', state);
      }
      return state.tag !== null ||  state.anchor !== null || hasContent;
    }

    function readDocument(state) {
      var documentStart = state.position,
          _position,
          directiveName,
          directiveArgs,
          hasDirectives = false,
          ch;

      state.version = null;
      state.checkLineBreaks = state.legacy;
      state.tagMap = Object.create(null);
      state.anchorMap = Object.create(null);

      while ((ch = state.input.charCodeAt(state.position)) !== 0) {
        skipSeparationSpace(state, true, -1);

        ch = state.input.charCodeAt(state.position);

        if (state.lineIndent > 0 || ch !== 0x25/* % */) {
          break;
        }

        hasDirectives = true;
        ch = state.input.charCodeAt(++state.position);
        _position = state.position;

        while (ch !== 0 && !is_WS_OR_EOL(ch)) {
          ch = state.input.charCodeAt(++state.position);
        }

        directiveName = state.input.slice(_position, state.position);
        directiveArgs = [];

        if (directiveName.length < 1) {
          throwError(state, 'directive name must not be less than one character in length');
        }

        while (ch !== 0) {
          while (is_WHITE_SPACE(ch)) {
            ch = state.input.charCodeAt(++state.position);
          }

          if (ch === 0x23/* # */) {
            do { ch = state.input.charCodeAt(++state.position); }
            while (ch !== 0 && !is_EOL(ch));
            break;
          }

          if (is_EOL(ch)) break;

          _position = state.position;

          while (ch !== 0 && !is_WS_OR_EOL(ch)) {
            ch = state.input.charCodeAt(++state.position);
          }

          directiveArgs.push(state.input.slice(_position, state.position));
        }

        if (ch !== 0) readLineBreak(state);

        if (_hasOwnProperty$1.call(directiveHandlers, directiveName)) {
          directiveHandlers[directiveName](state, directiveName, directiveArgs);
        } else {
          throwWarning(state, 'unknown document directive "' + directiveName + '"');
        }
      }

      skipSeparationSpace(state, true, -1);

      if (state.lineIndent === 0 &&
          state.input.charCodeAt(state.position)     === 0x2D/* - */ &&
          state.input.charCodeAt(state.position + 1) === 0x2D/* - */ &&
          state.input.charCodeAt(state.position + 2) === 0x2D/* - */) {
        state.position += 3;
        skipSeparationSpace(state, true, -1);

      } else if (hasDirectives) {
        throwError(state, 'directives end mark is expected');
      }

      composeNode(state, state.lineIndent - 1, CONTEXT_BLOCK_OUT, false, true);
      skipSeparationSpace(state, true, -1);

      if (state.checkLineBreaks &&
          PATTERN_NON_ASCII_LINE_BREAKS.test(state.input.slice(documentStart, state.position))) {
        throwWarning(state, 'non-ASCII line breaks are interpreted as content');
      }

      state.documents.push(state.result);

      if (state.position === state.lineStart && testDocumentSeparator(state)) {

        if (state.input.charCodeAt(state.position) === 0x2E/* . */) {
          state.position += 3;
          skipSeparationSpace(state, true, -1);
        }
        return;
      }

      if (state.position < (state.length - 1)) {
        throwError(state, 'end of the stream or a document separator is expected');
      } else {
        return;
      }
    }


    function loadDocuments(input, options) {
      input = String(input);
      options = options || {};

      if (input.length !== 0) {

        // Add tailing `\n` if not exists
        if (input.charCodeAt(input.length - 1) !== 0x0A/* LF */ &&
            input.charCodeAt(input.length - 1) !== 0x0D/* CR */) {
          input += '\n';
        }

        // Strip BOM
        if (input.charCodeAt(0) === 0xFEFF) {
          input = input.slice(1);
        }
      }

      var state = new State$1(input, options);

      var nullpos = input.indexOf('\0');

      if (nullpos !== -1) {
        state.position = nullpos;
        throwError(state, 'null byte is not allowed in input');
      }

      // Use 0 as string terminator. That significantly simplifies bounds check.
      state.input += '\0';

      while (state.input.charCodeAt(state.position) === 0x20/* Space */) {
        state.lineIndent += 1;
        state.position += 1;
      }

      while (state.position < (state.length - 1)) {
        readDocument(state);
      }

      return state.documents;
    }


    function loadAll$1(input, iterator, options) {
      if (iterator !== null && typeof iterator === 'object' && typeof options === 'undefined') {
        options = iterator;
        iterator = null;
      }

      var documents = loadDocuments(input, options);

      if (typeof iterator !== 'function') {
        return documents;
      }

      for (var index = 0, length = documents.length; index < length; index += 1) {
        iterator(documents[index]);
      }
    }


    function load$1(input, options) {
      var documents = loadDocuments(input, options);

      if (documents.length === 0) {
        /*eslint-disable no-undefined*/
        return undefined;
      } else if (documents.length === 1) {
        return documents[0];
      }
      throw new exception('expected a single document in the stream, but found more');
    }


    var loadAll_1 = loadAll$1;
    var load_1    = load$1;

    var loader = {
    	loadAll: loadAll_1,
    	load: load_1
    };

    /*eslint-disable no-use-before-define*/





    var _toString       = Object.prototype.toString;
    var _hasOwnProperty = Object.prototype.hasOwnProperty;

    var CHAR_BOM                  = 0xFEFF;
    var CHAR_TAB                  = 0x09; /* Tab */
    var CHAR_LINE_FEED            = 0x0A; /* LF */
    var CHAR_CARRIAGE_RETURN      = 0x0D; /* CR */
    var CHAR_SPACE                = 0x20; /* Space */
    var CHAR_EXCLAMATION          = 0x21; /* ! */
    var CHAR_DOUBLE_QUOTE         = 0x22; /* " */
    var CHAR_SHARP                = 0x23; /* # */
    var CHAR_PERCENT              = 0x25; /* % */
    var CHAR_AMPERSAND            = 0x26; /* & */
    var CHAR_SINGLE_QUOTE         = 0x27; /* ' */
    var CHAR_ASTERISK             = 0x2A; /* * */
    var CHAR_COMMA                = 0x2C; /* , */
    var CHAR_MINUS                = 0x2D; /* - */
    var CHAR_COLON                = 0x3A; /* : */
    var CHAR_EQUALS               = 0x3D; /* = */
    var CHAR_GREATER_THAN         = 0x3E; /* > */
    var CHAR_QUESTION             = 0x3F; /* ? */
    var CHAR_COMMERCIAL_AT        = 0x40; /* @ */
    var CHAR_LEFT_SQUARE_BRACKET  = 0x5B; /* [ */
    var CHAR_RIGHT_SQUARE_BRACKET = 0x5D; /* ] */
    var CHAR_GRAVE_ACCENT         = 0x60; /* ` */
    var CHAR_LEFT_CURLY_BRACKET   = 0x7B; /* { */
    var CHAR_VERTICAL_LINE        = 0x7C; /* | */
    var CHAR_RIGHT_CURLY_BRACKET  = 0x7D; /* } */

    var ESCAPE_SEQUENCES = {};

    ESCAPE_SEQUENCES[0x00]   = '\\0';
    ESCAPE_SEQUENCES[0x07]   = '\\a';
    ESCAPE_SEQUENCES[0x08]   = '\\b';
    ESCAPE_SEQUENCES[0x09]   = '\\t';
    ESCAPE_SEQUENCES[0x0A]   = '\\n';
    ESCAPE_SEQUENCES[0x0B]   = '\\v';
    ESCAPE_SEQUENCES[0x0C]   = '\\f';
    ESCAPE_SEQUENCES[0x0D]   = '\\r';
    ESCAPE_SEQUENCES[0x1B]   = '\\e';
    ESCAPE_SEQUENCES[0x22]   = '\\"';
    ESCAPE_SEQUENCES[0x5C]   = '\\\\';
    ESCAPE_SEQUENCES[0x85]   = '\\N';
    ESCAPE_SEQUENCES[0xA0]   = '\\_';
    ESCAPE_SEQUENCES[0x2028] = '\\L';
    ESCAPE_SEQUENCES[0x2029] = '\\P';

    var DEPRECATED_BOOLEANS_SYNTAX = [
      'y', 'Y', 'yes', 'Yes', 'YES', 'on', 'On', 'ON',
      'n', 'N', 'no', 'No', 'NO', 'off', 'Off', 'OFF'
    ];

    var DEPRECATED_BASE60_SYNTAX = /^[-+]?[0-9_]+(?::[0-9_]+)+(?:\.[0-9_]*)?$/;

    function compileStyleMap(schema, map) {
      var result, keys, index, length, tag, style, type;

      if (map === null) return {};

      result = {};
      keys = Object.keys(map);

      for (index = 0, length = keys.length; index < length; index += 1) {
        tag = keys[index];
        style = String(map[tag]);

        if (tag.slice(0, 2) === '!!') {
          tag = 'tag:yaml.org,2002:' + tag.slice(2);
        }
        type = schema.compiledTypeMap['fallback'][tag];

        if (type && _hasOwnProperty.call(type.styleAliases, style)) {
          style = type.styleAliases[style];
        }

        result[tag] = style;
      }

      return result;
    }

    function encodeHex(character) {
      var string, handle, length;

      string = character.toString(16).toUpperCase();

      if (character <= 0xFF) {
        handle = 'x';
        length = 2;
      } else if (character <= 0xFFFF) {
        handle = 'u';
        length = 4;
      } else if (character <= 0xFFFFFFFF) {
        handle = 'U';
        length = 8;
      } else {
        throw new exception('code point within a string may not be greater than 0xFFFFFFFF');
      }

      return '\\' + handle + common.repeat('0', length - string.length) + string;
    }


    var QUOTING_TYPE_SINGLE = 1,
        QUOTING_TYPE_DOUBLE = 2;

    function State(options) {
      this.schema        = options['schema'] || _default;
      this.indent        = Math.max(1, (options['indent'] || 2));
      this.noArrayIndent = options['noArrayIndent'] || false;
      this.skipInvalid   = options['skipInvalid'] || false;
      this.flowLevel     = (common.isNothing(options['flowLevel']) ? -1 : options['flowLevel']);
      this.styleMap      = compileStyleMap(this.schema, options['styles'] || null);
      this.sortKeys      = options['sortKeys'] || false;
      this.lineWidth     = options['lineWidth'] || 80;
      this.noRefs        = options['noRefs'] || false;
      this.noCompatMode  = options['noCompatMode'] || false;
      this.condenseFlow  = options['condenseFlow'] || false;
      this.quotingType   = options['quotingType'] === '"' ? QUOTING_TYPE_DOUBLE : QUOTING_TYPE_SINGLE;
      this.forceQuotes   = options['forceQuotes'] || false;
      this.replacer      = typeof options['replacer'] === 'function' ? options['replacer'] : null;

      this.implicitTypes = this.schema.compiledImplicit;
      this.explicitTypes = this.schema.compiledExplicit;

      this.tag = null;
      this.result = '';

      this.duplicates = [];
      this.usedDuplicates = null;
    }

    // Indents every line in a string. Empty lines (\n only) are not indented.
    function indentString(string, spaces) {
      var ind = common.repeat(' ', spaces),
          position = 0,
          next = -1,
          result = '',
          line,
          length = string.length;

      while (position < length) {
        next = string.indexOf('\n', position);
        if (next === -1) {
          line = string.slice(position);
          position = length;
        } else {
          line = string.slice(position, next + 1);
          position = next + 1;
        }

        if (line.length && line !== '\n') result += ind;

        result += line;
      }

      return result;
    }

    function generateNextLine(state, level) {
      return '\n' + common.repeat(' ', state.indent * level);
    }

    function testImplicitResolving(state, str) {
      var index, length, type;

      for (index = 0, length = state.implicitTypes.length; index < length; index += 1) {
        type = state.implicitTypes[index];

        if (type.resolve(str)) {
          return true;
        }
      }

      return false;
    }

    // [33] s-white ::= s-space | s-tab
    function isWhitespace(c) {
      return c === CHAR_SPACE || c === CHAR_TAB;
    }

    // Returns true if the character can be printed without escaping.
    // From YAML 1.2: "any allowed characters known to be non-printable
    // should also be escaped. [However,] This isn’t mandatory"
    // Derived from nb-char - \t - #x85 - #xA0 - #x2028 - #x2029.
    function isPrintable(c) {
      return  (0x00020 <= c && c <= 0x00007E)
          || ((0x000A1 <= c && c <= 0x00D7FF) && c !== 0x2028 && c !== 0x2029)
          || ((0x0E000 <= c && c <= 0x00FFFD) && c !== CHAR_BOM)
          ||  (0x10000 <= c && c <= 0x10FFFF);
    }

    // [34] ns-char ::= nb-char - s-white
    // [27] nb-char ::= c-printable - b-char - c-byte-order-mark
    // [26] b-char  ::= b-line-feed | b-carriage-return
    // Including s-white (for some reason, examples doesn't match specs in this aspect)
    // ns-char ::= c-printable - b-line-feed - b-carriage-return - c-byte-order-mark
    function isNsCharOrWhitespace(c) {
      return isPrintable(c)
        && c !== CHAR_BOM
        // - b-char
        && c !== CHAR_CARRIAGE_RETURN
        && c !== CHAR_LINE_FEED;
    }

    // [127]  ns-plain-safe(c) ::= c = flow-out  ⇒ ns-plain-safe-out
    //                             c = flow-in   ⇒ ns-plain-safe-in
    //                             c = block-key ⇒ ns-plain-safe-out
    //                             c = flow-key  ⇒ ns-plain-safe-in
    // [128] ns-plain-safe-out ::= ns-char
    // [129]  ns-plain-safe-in ::= ns-char - c-flow-indicator
    // [130]  ns-plain-char(c) ::=  ( ns-plain-safe(c) - “:” - “#” )
    //                            | ( /* An ns-char preceding */ “#” )
    //                            | ( “:” /* Followed by an ns-plain-safe(c) */ )
    function isPlainSafe(c, prev, inblock) {
      var cIsNsCharOrWhitespace = isNsCharOrWhitespace(c);
      var cIsNsChar = cIsNsCharOrWhitespace && !isWhitespace(c);
      return (
        // ns-plain-safe
        inblock ? // c = flow-in
          cIsNsCharOrWhitespace
          : cIsNsCharOrWhitespace
            // - c-flow-indicator
            && c !== CHAR_COMMA
            && c !== CHAR_LEFT_SQUARE_BRACKET
            && c !== CHAR_RIGHT_SQUARE_BRACKET
            && c !== CHAR_LEFT_CURLY_BRACKET
            && c !== CHAR_RIGHT_CURLY_BRACKET
      )
        // ns-plain-char
        && c !== CHAR_SHARP // false on '#'
        && !(prev === CHAR_COLON && !cIsNsChar) // false on ': '
        || (isNsCharOrWhitespace(prev) && !isWhitespace(prev) && c === CHAR_SHARP) // change to true on '[^ ]#'
        || (prev === CHAR_COLON && cIsNsChar); // change to true on ':[^ ]'
    }

    // Simplified test for values allowed as the first character in plain style.
    function isPlainSafeFirst(c) {
      // Uses a subset of ns-char - c-indicator
      // where ns-char = nb-char - s-white.
      // No support of ( ( “?” | “:” | “-” ) /* Followed by an ns-plain-safe(c)) */ ) part
      return isPrintable(c) && c !== CHAR_BOM
        && !isWhitespace(c) // - s-white
        // - (c-indicator ::=
        // “-” | “?” | “:” | “,” | “[” | “]” | “{” | “}”
        && c !== CHAR_MINUS
        && c !== CHAR_QUESTION
        && c !== CHAR_COLON
        && c !== CHAR_COMMA
        && c !== CHAR_LEFT_SQUARE_BRACKET
        && c !== CHAR_RIGHT_SQUARE_BRACKET
        && c !== CHAR_LEFT_CURLY_BRACKET
        && c !== CHAR_RIGHT_CURLY_BRACKET
        // | “#” | “&” | “*” | “!” | “|” | “=” | “>” | “'” | “"”
        && c !== CHAR_SHARP
        && c !== CHAR_AMPERSAND
        && c !== CHAR_ASTERISK
        && c !== CHAR_EXCLAMATION
        && c !== CHAR_VERTICAL_LINE
        && c !== CHAR_EQUALS
        && c !== CHAR_GREATER_THAN
        && c !== CHAR_SINGLE_QUOTE
        && c !== CHAR_DOUBLE_QUOTE
        // | “%” | “@” | “`”)
        && c !== CHAR_PERCENT
        && c !== CHAR_COMMERCIAL_AT
        && c !== CHAR_GRAVE_ACCENT;
    }

    // Simplified test for values allowed as the last character in plain style.
    function isPlainSafeLast(c) {
      // just not whitespace or colon, it will be checked to be plain character later
      return !isWhitespace(c) && c !== CHAR_COLON;
    }

    // Same as 'string'.codePointAt(pos), but works in older browsers.
    function codePointAt(string, pos) {
      var first = string.charCodeAt(pos), second;
      if (first >= 0xD800 && first <= 0xDBFF && pos + 1 < string.length) {
        second = string.charCodeAt(pos + 1);
        if (second >= 0xDC00 && second <= 0xDFFF) {
          // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
          return (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
        }
      }
      return first;
    }

    // Determines whether block indentation indicator is required.
    function needIndentIndicator(string) {
      var leadingSpaceRe = /^\n* /;
      return leadingSpaceRe.test(string);
    }

    var STYLE_PLAIN   = 1,
        STYLE_SINGLE  = 2,
        STYLE_LITERAL = 3,
        STYLE_FOLDED  = 4,
        STYLE_DOUBLE  = 5;

    // Determines which scalar styles are possible and returns the preferred style.
    // lineWidth = -1 => no limit.
    // Pre-conditions: str.length > 0.
    // Post-conditions:
    //    STYLE_PLAIN or STYLE_SINGLE => no \n are in the string.
    //    STYLE_LITERAL => no lines are suitable for folding (or lineWidth is -1).
    //    STYLE_FOLDED => a line > lineWidth and can be folded (and lineWidth != -1).
    function chooseScalarStyle(string, singleLineOnly, indentPerLevel, lineWidth,
      testAmbiguousType, quotingType, forceQuotes, inblock) {

      var i;
      var char = 0;
      var prevChar = null;
      var hasLineBreak = false;
      var hasFoldableLine = false; // only checked if shouldTrackWidth
      var shouldTrackWidth = lineWidth !== -1;
      var previousLineBreak = -1; // count the first line correctly
      var plain = isPlainSafeFirst(codePointAt(string, 0))
              && isPlainSafeLast(codePointAt(string, string.length - 1));

      if (singleLineOnly || forceQuotes) {
        // Case: no block styles.
        // Check for disallowed characters to rule out plain and single.
        for (i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
          char = codePointAt(string, i);
          if (!isPrintable(char)) {
            return STYLE_DOUBLE;
          }
          plain = plain && isPlainSafe(char, prevChar, inblock);
          prevChar = char;
        }
      } else {
        // Case: block styles permitted.
        for (i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
          char = codePointAt(string, i);
          if (char === CHAR_LINE_FEED) {
            hasLineBreak = true;
            // Check if any line can be folded.
            if (shouldTrackWidth) {
              hasFoldableLine = hasFoldableLine ||
                // Foldable line = too long, and not more-indented.
                (i - previousLineBreak - 1 > lineWidth &&
                 string[previousLineBreak + 1] !== ' ');
              previousLineBreak = i;
            }
          } else if (!isPrintable(char)) {
            return STYLE_DOUBLE;
          }
          plain = plain && isPlainSafe(char, prevChar, inblock);
          prevChar = char;
        }
        // in case the end is missing a \n
        hasFoldableLine = hasFoldableLine || (shouldTrackWidth &&
          (i - previousLineBreak - 1 > lineWidth &&
           string[previousLineBreak + 1] !== ' '));
      }
      // Although every style can represent \n without escaping, prefer block styles
      // for multiline, since they're more readable and they don't add empty lines.
      // Also prefer folding a super-long line.
      if (!hasLineBreak && !hasFoldableLine) {
        // Strings interpretable as another type have to be quoted;
        // e.g. the string 'true' vs. the boolean true.
        if (plain && !forceQuotes && !testAmbiguousType(string)) {
          return STYLE_PLAIN;
        }
        return quotingType === QUOTING_TYPE_DOUBLE ? STYLE_DOUBLE : STYLE_SINGLE;
      }
      // Edge case: block indentation indicator can only have one digit.
      if (indentPerLevel > 9 && needIndentIndicator(string)) {
        return STYLE_DOUBLE;
      }
      // At this point we know block styles are valid.
      // Prefer literal style unless we want to fold.
      if (!forceQuotes) {
        return hasFoldableLine ? STYLE_FOLDED : STYLE_LITERAL;
      }
      return quotingType === QUOTING_TYPE_DOUBLE ? STYLE_DOUBLE : STYLE_SINGLE;
    }

    // Note: line breaking/folding is implemented for only the folded style.
    // NB. We drop the last trailing newline (if any) of a returned block scalar
    //  since the dumper adds its own newline. This always works:
    //    • No ending newline => unaffected; already using strip "-" chomping.
    //    • Ending newline    => removed then restored.
    //  Importantly, this keeps the "+" chomp indicator from gaining an extra line.
    function writeScalar(state, string, level, iskey, inblock) {
      state.dump = (function () {
        if (string.length === 0) {
          return state.quotingType === QUOTING_TYPE_DOUBLE ? '""' : "''";
        }
        if (!state.noCompatMode) {
          if (DEPRECATED_BOOLEANS_SYNTAX.indexOf(string) !== -1 || DEPRECATED_BASE60_SYNTAX.test(string)) {
            return state.quotingType === QUOTING_TYPE_DOUBLE ? ('"' + string + '"') : ("'" + string + "'");
          }
        }

        var indent = state.indent * Math.max(1, level); // no 0-indent scalars
        // As indentation gets deeper, let the width decrease monotonically
        // to the lower bound min(state.lineWidth, 40).
        // Note that this implies
        //  state.lineWidth ≤ 40 + state.indent: width is fixed at the lower bound.
        //  state.lineWidth > 40 + state.indent: width decreases until the lower bound.
        // This behaves better than a constant minimum width which disallows narrower options,
        // or an indent threshold which causes the width to suddenly increase.
        var lineWidth = state.lineWidth === -1
          ? -1 : Math.max(Math.min(state.lineWidth, 40), state.lineWidth - indent);

        // Without knowing if keys are implicit/explicit, assume implicit for safety.
        var singleLineOnly = iskey
          // No block styles in flow mode.
          || (state.flowLevel > -1 && level >= state.flowLevel);
        function testAmbiguity(string) {
          return testImplicitResolving(state, string);
        }

        switch (chooseScalarStyle(string, singleLineOnly, state.indent, lineWidth,
          testAmbiguity, state.quotingType, state.forceQuotes && !iskey, inblock)) {

          case STYLE_PLAIN:
            return string;
          case STYLE_SINGLE:
            return "'" + string.replace(/'/g, "''") + "'";
          case STYLE_LITERAL:
            return '|' + blockHeader(string, state.indent)
              + dropEndingNewline(indentString(string, indent));
          case STYLE_FOLDED:
            return '>' + blockHeader(string, state.indent)
              + dropEndingNewline(indentString(foldString(string, lineWidth), indent));
          case STYLE_DOUBLE:
            return '"' + escapeString(string) + '"';
          default:
            throw new exception('impossible error: invalid scalar style');
        }
      }());
    }

    // Pre-conditions: string is valid for a block scalar, 1 <= indentPerLevel <= 9.
    function blockHeader(string, indentPerLevel) {
      var indentIndicator = needIndentIndicator(string) ? String(indentPerLevel) : '';

      // note the special case: the string '\n' counts as a "trailing" empty line.
      var clip =          string[string.length - 1] === '\n';
      var keep = clip && (string[string.length - 2] === '\n' || string === '\n');
      var chomp = keep ? '+' : (clip ? '' : '-');

      return indentIndicator + chomp + '\n';
    }

    // (See the note for writeScalar.)
    function dropEndingNewline(string) {
      return string[string.length - 1] === '\n' ? string.slice(0, -1) : string;
    }

    // Note: a long line without a suitable break point will exceed the width limit.
    // Pre-conditions: every char in str isPrintable, str.length > 0, width > 0.
    function foldString(string, width) {
      // In folded style, $k$ consecutive newlines output as $k+1$ newlines—
      // unless they're before or after a more-indented line, or at the very
      // beginning or end, in which case $k$ maps to $k$.
      // Therefore, parse each chunk as newline(s) followed by a content line.
      var lineRe = /(\n+)([^\n]*)/g;

      // first line (possibly an empty line)
      var result = (function () {
        var nextLF = string.indexOf('\n');
        nextLF = nextLF !== -1 ? nextLF : string.length;
        lineRe.lastIndex = nextLF;
        return foldLine(string.slice(0, nextLF), width);
      }());
      // If we haven't reached the first content line yet, don't add an extra \n.
      var prevMoreIndented = string[0] === '\n' || string[0] === ' ';
      var moreIndented;

      // rest of the lines
      var match;
      while ((match = lineRe.exec(string))) {
        var prefix = match[1], line = match[2];
        moreIndented = (line[0] === ' ');
        result += prefix
          + (!prevMoreIndented && !moreIndented && line !== ''
            ? '\n' : '')
          + foldLine(line, width);
        prevMoreIndented = moreIndented;
      }

      return result;
    }

    // Greedy line breaking.
    // Picks the longest line under the limit each time,
    // otherwise settles for the shortest line over the limit.
    // NB. More-indented lines *cannot* be folded, as that would add an extra \n.
    function foldLine(line, width) {
      if (line === '' || line[0] === ' ') return line;

      // Since a more-indented line adds a \n, breaks can't be followed by a space.
      var breakRe = / [^ ]/g; // note: the match index will always be <= length-2.
      var match;
      // start is an inclusive index. end, curr, and next are exclusive.
      var start = 0, end, curr = 0, next = 0;
      var result = '';

      // Invariants: 0 <= start <= length-1.
      //   0 <= curr <= next <= max(0, length-2). curr - start <= width.
      // Inside the loop:
      //   A match implies length >= 2, so curr and next are <= length-2.
      while ((match = breakRe.exec(line))) {
        next = match.index;
        // maintain invariant: curr - start <= width
        if (next - start > width) {
          end = (curr > start) ? curr : next; // derive end <= length-2
          result += '\n' + line.slice(start, end);
          // skip the space that was output as \n
          start = end + 1;                    // derive start <= length-1
        }
        curr = next;
      }

      // By the invariants, start <= length-1, so there is something left over.
      // It is either the whole string or a part starting from non-whitespace.
      result += '\n';
      // Insert a break if the remainder is too long and there is a break available.
      if (line.length - start > width && curr > start) {
        result += line.slice(start, curr) + '\n' + line.slice(curr + 1);
      } else {
        result += line.slice(start);
      }

      return result.slice(1); // drop extra \n joiner
    }

    // Escapes a double-quoted string.
    function escapeString(string) {
      var result = '';
      var char = 0;
      var escapeSeq;

      for (var i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
        char = codePointAt(string, i);
        escapeSeq = ESCAPE_SEQUENCES[char];

        if (!escapeSeq && isPrintable(char)) {
          result += string[i];
          if (char >= 0x10000) result += string[i + 1];
        } else {
          result += escapeSeq || encodeHex(char);
        }
      }

      return result;
    }

    function writeFlowSequence(state, level, object) {
      var _result = '',
          _tag    = state.tag,
          index,
          length,
          value;

      for (index = 0, length = object.length; index < length; index += 1) {
        value = object[index];

        if (state.replacer) {
          value = state.replacer.call(object, String(index), value);
        }

        // Write only valid elements, put null instead of invalid elements.
        if (writeNode(state, level, value, false, false) ||
            (typeof value === 'undefined' &&
             writeNode(state, level, null, false, false))) {

          if (_result !== '') _result += ',' + (!state.condenseFlow ? ' ' : '');
          _result += state.dump;
        }
      }

      state.tag = _tag;
      state.dump = '[' + _result + ']';
    }

    function writeBlockSequence(state, level, object, compact) {
      var _result = '',
          _tag    = state.tag,
          index,
          length,
          value;

      for (index = 0, length = object.length; index < length; index += 1) {
        value = object[index];

        if (state.replacer) {
          value = state.replacer.call(object, String(index), value);
        }

        // Write only valid elements, put null instead of invalid elements.
        if (writeNode(state, level + 1, value, true, true, false, true) ||
            (typeof value === 'undefined' &&
             writeNode(state, level + 1, null, true, true, false, true))) {

          if (!compact || _result !== '') {
            _result += generateNextLine(state, level);
          }

          if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
            _result += '-';
          } else {
            _result += '- ';
          }

          _result += state.dump;
        }
      }

      state.tag = _tag;
      state.dump = _result || '[]'; // Empty sequence if no valid values.
    }

    function writeFlowMapping(state, level, object) {
      var _result       = '',
          _tag          = state.tag,
          objectKeyList = Object.keys(object),
          index,
          length,
          objectKey,
          objectValue,
          pairBuffer;

      for (index = 0, length = objectKeyList.length; index < length; index += 1) {

        pairBuffer = '';
        if (_result !== '') pairBuffer += ', ';

        if (state.condenseFlow) pairBuffer += '"';

        objectKey = objectKeyList[index];
        objectValue = object[objectKey];

        if (state.replacer) {
          objectValue = state.replacer.call(object, objectKey, objectValue);
        }

        if (!writeNode(state, level, objectKey, false, false)) {
          continue; // Skip this pair because of invalid key;
        }

        if (state.dump.length > 1024) pairBuffer += '? ';

        pairBuffer += state.dump + (state.condenseFlow ? '"' : '') + ':' + (state.condenseFlow ? '' : ' ');

        if (!writeNode(state, level, objectValue, false, false)) {
          continue; // Skip this pair because of invalid value.
        }

        pairBuffer += state.dump;

        // Both key and value are valid.
        _result += pairBuffer;
      }

      state.tag = _tag;
      state.dump = '{' + _result + '}';
    }

    function writeBlockMapping(state, level, object, compact) {
      var _result       = '',
          _tag          = state.tag,
          objectKeyList = Object.keys(object),
          index,
          length,
          objectKey,
          objectValue,
          explicitPair,
          pairBuffer;

      // Allow sorting keys so that the output file is deterministic
      if (state.sortKeys === true) {
        // Default sorting
        objectKeyList.sort();
      } else if (typeof state.sortKeys === 'function') {
        // Custom sort function
        objectKeyList.sort(state.sortKeys);
      } else if (state.sortKeys) {
        // Something is wrong
        throw new exception('sortKeys must be a boolean or a function');
      }

      for (index = 0, length = objectKeyList.length; index < length; index += 1) {
        pairBuffer = '';

        if (!compact || _result !== '') {
          pairBuffer += generateNextLine(state, level);
        }

        objectKey = objectKeyList[index];
        objectValue = object[objectKey];

        if (state.replacer) {
          objectValue = state.replacer.call(object, objectKey, objectValue);
        }

        if (!writeNode(state, level + 1, objectKey, true, true, true)) {
          continue; // Skip this pair because of invalid key.
        }

        explicitPair = (state.tag !== null && state.tag !== '?') ||
                       (state.dump && state.dump.length > 1024);

        if (explicitPair) {
          if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
            pairBuffer += '?';
          } else {
            pairBuffer += '? ';
          }
        }

        pairBuffer += state.dump;

        if (explicitPair) {
          pairBuffer += generateNextLine(state, level);
        }

        if (!writeNode(state, level + 1, objectValue, true, explicitPair)) {
          continue; // Skip this pair because of invalid value.
        }

        if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
          pairBuffer += ':';
        } else {
          pairBuffer += ': ';
        }

        pairBuffer += state.dump;

        // Both key and value are valid.
        _result += pairBuffer;
      }

      state.tag = _tag;
      state.dump = _result || '{}'; // Empty mapping if no valid pairs.
    }

    function detectType(state, object, explicit) {
      var _result, typeList, index, length, type, style;

      typeList = explicit ? state.explicitTypes : state.implicitTypes;

      for (index = 0, length = typeList.length; index < length; index += 1) {
        type = typeList[index];

        if ((type.instanceOf  || type.predicate) &&
            (!type.instanceOf || ((typeof object === 'object') && (object instanceof type.instanceOf))) &&
            (!type.predicate  || type.predicate(object))) {

          if (explicit) {
            if (type.multi && type.representName) {
              state.tag = type.representName(object);
            } else {
              state.tag = type.tag;
            }
          } else {
            state.tag = '?';
          }

          if (type.represent) {
            style = state.styleMap[type.tag] || type.defaultStyle;

            if (_toString.call(type.represent) === '[object Function]') {
              _result = type.represent(object, style);
            } else if (_hasOwnProperty.call(type.represent, style)) {
              _result = type.represent[style](object, style);
            } else {
              throw new exception('!<' + type.tag + '> tag resolver accepts not "' + style + '" style');
            }

            state.dump = _result;
          }

          return true;
        }
      }

      return false;
    }

    // Serializes `object` and writes it to global `result`.
    // Returns true on success, or false on invalid object.
    //
    function writeNode(state, level, object, block, compact, iskey, isblockseq) {
      state.tag = null;
      state.dump = object;

      if (!detectType(state, object, false)) {
        detectType(state, object, true);
      }

      var type = _toString.call(state.dump);
      var inblock = block;
      var tagStr;

      if (block) {
        block = (state.flowLevel < 0 || state.flowLevel > level);
      }

      var objectOrArray = type === '[object Object]' || type === '[object Array]',
          duplicateIndex,
          duplicate;

      if (objectOrArray) {
        duplicateIndex = state.duplicates.indexOf(object);
        duplicate = duplicateIndex !== -1;
      }

      if ((state.tag !== null && state.tag !== '?') || duplicate || (state.indent !== 2 && level > 0)) {
        compact = false;
      }

      if (duplicate && state.usedDuplicates[duplicateIndex]) {
        state.dump = '*ref_' + duplicateIndex;
      } else {
        if (objectOrArray && duplicate && !state.usedDuplicates[duplicateIndex]) {
          state.usedDuplicates[duplicateIndex] = true;
        }
        if (type === '[object Object]') {
          if (block && (Object.keys(state.dump).length !== 0)) {
            writeBlockMapping(state, level, state.dump, compact);
            if (duplicate) {
              state.dump = '&ref_' + duplicateIndex + state.dump;
            }
          } else {
            writeFlowMapping(state, level, state.dump);
            if (duplicate) {
              state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
            }
          }
        } else if (type === '[object Array]') {
          if (block && (state.dump.length !== 0)) {
            if (state.noArrayIndent && !isblockseq && level > 0) {
              writeBlockSequence(state, level - 1, state.dump, compact);
            } else {
              writeBlockSequence(state, level, state.dump, compact);
            }
            if (duplicate) {
              state.dump = '&ref_' + duplicateIndex + state.dump;
            }
          } else {
            writeFlowSequence(state, level, state.dump);
            if (duplicate) {
              state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
            }
          }
        } else if (type === '[object String]') {
          if (state.tag !== '?') {
            writeScalar(state, state.dump, level, iskey, inblock);
          }
        } else if (type === '[object Undefined]') {
          return false;
        } else {
          if (state.skipInvalid) return false;
          throw new exception('unacceptable kind of an object to dump ' + type);
        }

        if (state.tag !== null && state.tag !== '?') {
          // Need to encode all characters except those allowed by the spec:
          //
          // [35] ns-dec-digit    ::=  [#x30-#x39] /* 0-9 */
          // [36] ns-hex-digit    ::=  ns-dec-digit
          //                         | [#x41-#x46] /* A-F */ | [#x61-#x66] /* a-f */
          // [37] ns-ascii-letter ::=  [#x41-#x5A] /* A-Z */ | [#x61-#x7A] /* a-z */
          // [38] ns-word-char    ::=  ns-dec-digit | ns-ascii-letter | “-”
          // [39] ns-uri-char     ::=  “%” ns-hex-digit ns-hex-digit | ns-word-char | “#”
          //                         | “;” | “/” | “?” | “:” | “@” | “&” | “=” | “+” | “$” | “,”
          //                         | “_” | “.” | “!” | “~” | “*” | “'” | “(” | “)” | “[” | “]”
          //
          // Also need to encode '!' because it has special meaning (end of tag prefix).
          //
          tagStr = encodeURI(
            state.tag[0] === '!' ? state.tag.slice(1) : state.tag
          ).replace(/!/g, '%21');

          if (state.tag[0] === '!') {
            tagStr = '!' + tagStr;
          } else if (tagStr.slice(0, 18) === 'tag:yaml.org,2002:') {
            tagStr = '!!' + tagStr.slice(18);
          } else {
            tagStr = '!<' + tagStr + '>';
          }

          state.dump = tagStr + ' ' + state.dump;
        }
      }

      return true;
    }

    function getDuplicateReferences(object, state) {
      var objects = [],
          duplicatesIndexes = [],
          index,
          length;

      inspectNode(object, objects, duplicatesIndexes);

      for (index = 0, length = duplicatesIndexes.length; index < length; index += 1) {
        state.duplicates.push(objects[duplicatesIndexes[index]]);
      }
      state.usedDuplicates = new Array(length);
    }

    function inspectNode(object, objects, duplicatesIndexes) {
      var objectKeyList,
          index,
          length;

      if (object !== null && typeof object === 'object') {
        index = objects.indexOf(object);
        if (index !== -1) {
          if (duplicatesIndexes.indexOf(index) === -1) {
            duplicatesIndexes.push(index);
          }
        } else {
          objects.push(object);

          if (Array.isArray(object)) {
            for (index = 0, length = object.length; index < length; index += 1) {
              inspectNode(object[index], objects, duplicatesIndexes);
            }
          } else {
            objectKeyList = Object.keys(object);

            for (index = 0, length = objectKeyList.length; index < length; index += 1) {
              inspectNode(object[objectKeyList[index]], objects, duplicatesIndexes);
            }
          }
        }
      }
    }

    function dump$1(input, options) {
      options = options || {};

      var state = new State(options);

      if (!state.noRefs) getDuplicateReferences(input, state);

      var value = input;

      if (state.replacer) {
        value = state.replacer.call({ '': value }, '', value);
      }

      if (writeNode(state, 0, value, true, true)) return state.dump + '\n';

      return '';
    }

    var dump_1 = dump$1;

    var dumper = {
    	dump: dump_1
    };

    function renamed(from, to) {
      return function () {
        throw new Error('Function yaml.' + from + ' is removed in js-yaml 4. ' +
          'Use yaml.' + to + ' instead, which is now safe by default.');
      };
    }


    var Type                = type;
    var Schema              = schema;
    var FAILSAFE_SCHEMA     = failsafe;
    var JSON_SCHEMA         = json;
    var CORE_SCHEMA         = core;
    var DEFAULT_SCHEMA      = _default;
    var load                = loader.load;
    var loadAll             = loader.loadAll;
    var dump                = dumper.dump;
    var YAMLException       = exception;

    // Re-export all types in case user wants to create custom schema
    var types = {
      binary:    binary,
      float:     float,
      map:       map,
      null:      _null,
      pairs:     pairs,
      set:       set,
      timestamp: timestamp,
      bool:      bool,
      int:       int,
      merge:     merge,
      omap:      omap,
      seq:       seq,
      str:       str
    };

    // Removed functions from JS-YAML 3.0.x
    var safeLoad            = renamed('safeLoad', 'load');
    var safeLoadAll         = renamed('safeLoadAll', 'loadAll');
    var safeDump            = renamed('safeDump', 'dump');

    var jsYaml = {
    	Type: Type,
    	Schema: Schema,
    	FAILSAFE_SCHEMA: FAILSAFE_SCHEMA,
    	JSON_SCHEMA: JSON_SCHEMA,
    	CORE_SCHEMA: CORE_SCHEMA,
    	DEFAULT_SCHEMA: DEFAULT_SCHEMA,
    	load: load,
    	loadAll: loadAll,
    	dump: dump,
    	YAMLException: YAMLException,
    	types: types,
    	safeLoad: safeLoad,
    	safeLoadAll: safeLoadAll,
    	safeDump: safeDump
    };

    /* src\CodeComparionToolinGraph.svelte generated by Svelte v3.59.2 */
    const file$3 = "src\\CodeComparionToolinGraph.svelte";

    function get_each_context$2(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[25] = list[i];
    	return child_ctx;
    }

    function get_each_context_1$2(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[28] = list[i];
    	return child_ctx;
    }

    function get_each_context_2$2(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[31] = list[i];
    	return child_ctx;
    }

    // (246:4) {#each $changes as change}
    function create_each_block_2$2(ctx) {
    	let li;
    	let t0_value = /*change*/ ctx[31].type + "";
    	let t0;
    	let t1;
    	let t2_value = /*change*/ ctx[31].id + "";
    	let t2;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t0 = text(t0_value);
    			t1 = text(": ");
    			t2 = text(t2_value);
    			add_location(li, file$3, 246, 6, 7835);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t0);
    			append_dev(li, t1);
    			append_dev(li, t2);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$changes*/ 32 && t0_value !== (t0_value = /*change*/ ctx[31].type + "")) set_data_dev(t0, t0_value);
    			if (dirty[0] & /*$changes*/ 32 && t2_value !== (t2_value = /*change*/ ctx[31].id + "")) set_data_dev(t2, t2_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_2$2.name,
    		type: "each",
    		source: "(246:4) {#each $changes as change}",
    		ctx
    	});

    	return block;
    }

    // (255:6) {#each diffSet.differences as diff}
    function create_each_block_1$2(ctx) {
    	let li;
    	let t0_value = /*diff*/ ctx[28].type + "";
    	let t0;
    	let t1;
    	let t2_value = /*diff*/ ctx[28].id + "";
    	let t2;

    	const block = {
    		c: function create() {
    			li = element$1("li");
    			t0 = text(t0_value);
    			t1 = text(": ");
    			t2 = text(t2_value);
    			add_location(li, file$3, 255, 8, 8075);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, li, anchor);
    			append_dev(li, t0);
    			append_dev(li, t1);
    			append_dev(li, t2);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$accumulatedDifferences*/ 16 && t0_value !== (t0_value = /*diff*/ ctx[28].type + "")) set_data_dev(t0, t0_value);
    			if (dirty[0] & /*$accumulatedDifferences*/ 16 && t2_value !== (t2_value = /*diff*/ ctx[28].id + "")) set_data_dev(t2, t2_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(li);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$2.name,
    		type: "each",
    		source: "(255:6) {#each diffSet.differences as diff}",
    		ctx
    	});

    	return block;
    }

    // (252:2) {#each $accumulatedDifferences as diffSet}
    function create_each_block$2(ctx) {
    	let h3;
    	let t0_value = /*diffSet*/ ctx[25].timestamp + "";
    	let t0;
    	let t1;
    	let ul;
    	let each_value_1 = /*diffSet*/ ctx[25].differences;
    	validate_each_argument(each_value_1);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks[i] = create_each_block_1$2(get_each_context_1$2(ctx, each_value_1, i));
    	}

    	const block = {
    		c: function create() {
    			h3 = element$1("h3");
    			t0 = text(t0_value);
    			t1 = space();
    			ul = element$1("ul");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			add_location(h3, file$3, 252, 4, 7984);
    			add_location(ul, file$3, 253, 4, 8018);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h3, anchor);
    			append_dev(h3, t0);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, ul, anchor);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(ul, null);
    				}
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$accumulatedDifferences*/ 16 && t0_value !== (t0_value = /*diffSet*/ ctx[25].timestamp + "")) set_data_dev(t0, t0_value);

    			if (dirty[0] & /*$accumulatedDifferences*/ 16) {
    				each_value_1 = /*diffSet*/ ctx[25].differences;
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$2(ctx, each_value_1, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_1$2(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(ul, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_1.length;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h3);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(ul);
    			destroy_each(each_blocks, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$2.name,
    		type: "each",
    		source: "(252:2) {#each $accumulatedDifferences as diffSet}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$3(ctx) {
    	let h20;
    	let t1;
    	let div4;
    	let div1;
    	let div0;
    	let t2;
    	let button0;
    	let t4;
    	let div3;
    	let div2;
    	let t5;
    	let button1;
    	let t7;
    	let div7;
    	let div5;
    	let h30;
    	let t9;
    	let textarea0;
    	let t10;
    	let button2;
    	let t12;
    	let div6;
    	let h31;
    	let t14;
    	let textarea1;
    	let t15;
    	let button3;
    	let t17;
    	let h21;
    	let t19;
    	let ul;
    	let t20;
    	let h22;
    	let t22;
    	let t23;
    	let div8;
    	let button4;
    	let mounted;
    	let dispose;
    	let each_value_2 = /*$changes*/ ctx[5];
    	validate_each_argument(each_value_2);
    	let each_blocks_1 = [];

    	for (let i = 0; i < each_value_2.length; i += 1) {
    		each_blocks_1[i] = create_each_block_2$2(get_each_context_2$2(ctx, each_value_2, i));
    	}

    	let each_value = /*$accumulatedDifferences*/ ctx[4];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$2(get_each_context$2(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			h20 = element$1("h2");
    			h20.textContent = "Comparison Tool";
    			t1 = space();
    			div4 = element$1("div");
    			div1 = element$1("div");
    			div0 = element$1("div");
    			t2 = space();
    			button0 = element$1("button");
    			button0.textContent = "Fit Graph 1";
    			t4 = space();
    			div3 = element$1("div");
    			div2 = element$1("div");
    			t5 = space();
    			button1 = element$1("button");
    			button1.textContent = "Fit Graph 2";
    			t7 = space();
    			div7 = element$1("div");
    			div5 = element$1("div");
    			h30 = element$1("h3");
    			h30.textContent = "Graph 1 YAML";
    			t9 = space();
    			textarea0 = element$1("textarea");
    			t10 = space();
    			button2 = element$1("button");
    			button2.textContent = "Load Graph 1";
    			t12 = space();
    			div6 = element$1("div");
    			h31 = element$1("h3");
    			h31.textContent = "Graph 2 YAML";
    			t14 = space();
    			textarea1 = element$1("textarea");
    			t15 = space();
    			button3 = element$1("button");
    			button3.textContent = "Load Graph 2";
    			t17 = space();
    			h21 = element$1("h2");
    			h21.textContent = "Differences";
    			t19 = space();
    			ul = element$1("ul");

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				each_blocks_1[i].c();
    			}

    			t20 = space();
    			h22 = element$1("h2");
    			h22.textContent = "Accumulated Differences";
    			t22 = space();

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t23 = space();
    			div8 = element$1("div");
    			button4 = element$1("button");
    			button4.textContent = "Save Differences";
    			add_location(h20, file$3, 218, 2, 6804);
    			attr_dev(div0, "id", "cy1");
    			attr_dev(div0, "class", "cy svelte-za1uoo");
    			add_location(div0, file$3, 221, 6, 6906);
    			add_location(button0, file$3, 222, 6, 6968);
    			attr_dev(div1, "class", "graph-with-button svelte-za1uoo");
    			add_location(div1, file$3, 220, 4, 6867);
    			attr_dev(div2, "id", "cy2");
    			attr_dev(div2, "class", "cy svelte-za1uoo");
    			add_location(div2, file$3, 225, 6, 7082);
    			add_location(button1, file$3, 226, 6, 7144);
    			attr_dev(div3, "class", "graph-with-button svelte-za1uoo");
    			add_location(div3, file$3, 224, 4, 7043);
    			attr_dev(div4, "class", "graph-container svelte-za1uoo");
    			add_location(div4, file$3, 219, 2, 6832);
    			add_location(h30, file$3, 232, 6, 7282);
    			attr_dev(textarea0, "class", "textareaYAML svelte-za1uoo");
    			attr_dev(textarea0, "placeholder", "Enter YAML for Graph 1");
    			add_location(textarea0, file$3, 233, 6, 7311);
    			add_location(button2, file$3, 234, 6, 7427);
    			add_location(div5, file$3, 231, 4, 7269);
    			add_location(h31, file$3, 237, 6, 7525);
    			attr_dev(textarea1, "class", "textareaYAML svelte-za1uoo");
    			attr_dev(textarea1, "placeholder", "Enter YAML for Graph 2");
    			add_location(textarea1, file$3, 238, 6, 7554);
    			add_location(button3, file$3, 239, 6, 7670);
    			add_location(div6, file$3, 236, 4, 7512);
    			attr_dev(div7, "class", "textarea-container svelte-za1uoo");
    			add_location(div7, file$3, 230, 2, 7231);
    			add_location(h21, file$3, 243, 2, 7767);
    			add_location(ul, file$3, 244, 2, 7791);
    			add_location(h22, file$3, 250, 2, 7900);
    			add_location(button4, file$3, 261, 4, 8178);
    			attr_dev(div8, "class", "buttons svelte-za1uoo");
    			add_location(div8, file$3, 260, 2, 8151);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h20, anchor);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, div4, anchor);
    			append_dev(div4, div1);
    			append_dev(div1, div0);
    			/*div0_binding*/ ctx[11](div0);
    			append_dev(div1, t2);
    			append_dev(div1, button0);
    			append_dev(div4, t4);
    			append_dev(div4, div3);
    			append_dev(div3, div2);
    			/*div2_binding*/ ctx[13](div2);
    			append_dev(div3, t5);
    			append_dev(div3, button1);
    			insert_dev(target, t7, anchor);
    			insert_dev(target, div7, anchor);
    			append_dev(div7, div5);
    			append_dev(div5, h30);
    			append_dev(div5, t9);
    			append_dev(div5, textarea0);
    			set_input_value(textarea0, /*customScenario1*/ ctx[2]);
    			append_dev(div5, t10);
    			append_dev(div5, button2);
    			append_dev(div7, t12);
    			append_dev(div7, div6);
    			append_dev(div6, h31);
    			append_dev(div6, t14);
    			append_dev(div6, textarea1);
    			set_input_value(textarea1, /*customScenario2*/ ctx[3]);
    			append_dev(div6, t15);
    			append_dev(div6, button3);
    			insert_dev(target, t17, anchor);
    			insert_dev(target, h21, anchor);
    			insert_dev(target, t19, anchor);
    			insert_dev(target, ul, anchor);

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				if (each_blocks_1[i]) {
    					each_blocks_1[i].m(ul, null);
    				}
    			}

    			insert_dev(target, t20, anchor);
    			insert_dev(target, h22, anchor);
    			insert_dev(target, t22, anchor);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(target, anchor);
    				}
    			}

    			insert_dev(target, t23, anchor);
    			insert_dev(target, div8, anchor);
    			append_dev(div8, button4);

    			if (!mounted) {
    				dispose = [
    					listen_dev(button0, "click", /*click_handler*/ ctx[12], false, false, false, false),
    					listen_dev(button1, "click", /*click_handler_1*/ ctx[14], false, false, false, false),
    					listen_dev(textarea0, "input", /*textarea0_input_handler*/ ctx[15]),
    					listen_dev(button2, "click", /*click_handler_2*/ ctx[16], false, false, false, false),
    					listen_dev(textarea1, "input", /*textarea1_input_handler*/ ctx[17]),
    					listen_dev(button3, "click", /*click_handler_3*/ ctx[18], false, false, false, false),
    					listen_dev(button4, "click", /*saveDifferences*/ ctx[10], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*customScenario1*/ 4) {
    				set_input_value(textarea0, /*customScenario1*/ ctx[2]);
    			}

    			if (dirty[0] & /*customScenario2*/ 8) {
    				set_input_value(textarea1, /*customScenario2*/ ctx[3]);
    			}

    			if (dirty[0] & /*$changes*/ 32) {
    				each_value_2 = /*$changes*/ ctx[5];
    				validate_each_argument(each_value_2);
    				let i;

    				for (i = 0; i < each_value_2.length; i += 1) {
    					const child_ctx = get_each_context_2$2(ctx, each_value_2, i);

    					if (each_blocks_1[i]) {
    						each_blocks_1[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_1[i] = create_each_block_2$2(child_ctx);
    						each_blocks_1[i].c();
    						each_blocks_1[i].m(ul, null);
    					}
    				}

    				for (; i < each_blocks_1.length; i += 1) {
    					each_blocks_1[i].d(1);
    				}

    				each_blocks_1.length = each_value_2.length;
    			}

    			if (dirty[0] & /*$accumulatedDifferences*/ 16) {
    				each_value = /*$accumulatedDifferences*/ ctx[4];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$2(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$2(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(t23.parentNode, t23);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h20);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(div4);
    			/*div0_binding*/ ctx[11](null);
    			/*div2_binding*/ ctx[13](null);
    			if (detaching) detach_dev(t7);
    			if (detaching) detach_dev(div7);
    			if (detaching) detach_dev(t17);
    			if (detaching) detach_dev(h21);
    			if (detaching) detach_dev(t19);
    			if (detaching) detach_dev(ul);
    			destroy_each(each_blocks_1, detaching);
    			if (detaching) detach_dev(t20);
    			if (detaching) detach_dev(h22);
    			if (detaching) detach_dev(t22);
    			destroy_each(each_blocks, detaching);
    			if (detaching) detach_dev(t23);
    			if (detaching) detach_dev(div8);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$3.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$3($$self, $$props, $$invalidate) {
    	let $accumulatedDifferences;
    	let $changes;
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('CodeComparionToolinGraph', slots, []);
    	let cy1, cy2;
    	let container1, container2;
    	let customScenario1 = ""; // Textarea input for custom scenarios for Graph 1
    	let customScenario2 = ""; // Textarea input for custom scenarios for Graph 2
    	const changes = writable([]);
    	validate_store(changes, 'changes');
    	component_subscribe($$self, changes, value => $$invalidate(5, $changes = value));
    	let accumulatedDifferences = writable([]); // To accumulate all differences
    	validate_store(accumulatedDifferences, 'accumulatedDifferences');
    	component_subscribe($$self, accumulatedDifferences, value => $$invalidate(4, $accumulatedDifferences = value));

    	let dummyData1 = [
    		{
    			file: 'ComponentA',
    			symbols: [
    				{ id: 'function1', type: 'function' },
    				{ id: 'variable1', type: 'variable' }
    			],
    			edges: [{ source: 'variable1', target: 'function1' }]
    		},
    		{
    			file: 'ComponentB',
    			symbols: [
    				{ id: 'function2', type: 'function' },
    				{ id: 'variable2', type: 'variable' }
    			],
    			edges: [{ source: 'variable2', target: 'function2' }]
    		}
    	];

    	let dummyData2 = [
    		{
    			file: 'ComponentC',
    			symbols: [
    				{ id: 'function3', type: 'function' },
    				{ id: 'variable3', type: 'variable' }
    			],
    			edges: [{ source: 'variable3', target: 'function3' }]
    		},
    		{
    			file: 'ComponentD',
    			symbols: [
    				{ id: 'function4', type: 'function' },
    				{ id: 'variable4', type: 'variable' }
    			],
    			edges: [{ source: 'variable4', target: 'function4' }]
    		}
    	];

    	const createGraphElements = data => {
    		const elements = [];

    		data.forEach(file => {
    			file.symbols.forEach(symbol => {
    				elements.push({
    					data: {
    						id: symbol.id,
    						label: `${symbol.id} (${symbol.type})`,
    						type: symbol.type
    					}
    				});
    			});

    			file.edges.forEach(edge => {
    				elements.push({
    					data: {
    						source: edge.source,
    						target: edge.target,
    						type: edge.type
    					}
    				});
    			});
    		});

    		return elements;
    	};

    	const findDifferences = () => {
    		const nodesGraph1 = new Set(dummyData1.flatMap(file => file.symbols.map(symbol => symbol.id)));
    		const nodesGraph2 = new Set(dummyData2.flatMap(file => file.symbols.map(symbol => symbol.id)));
    		const edgesGraph1 = new Set(dummyData1.flatMap(file => file.edges.map(edge => `${edge.source}-${edge.target}`)));
    		const edgesGraph2 = new Set(dummyData2.flatMap(file => file.edges.map(edge => `${edge.source}-${edge.target}`)));

    		const nodeDiffs = [
    			...[...nodesGraph1].filter(x => !nodesGraph2.has(x)).map(id => ({ type: 'missing in graph2', id })),
    			...[...nodesGraph2].filter(x => !nodesGraph1.has(x)).map(id => ({ type: 'missing in graph1', id }))
    		];

    		const edgeDiffs = [
    			...[...edgesGraph1].filter(x => !edgesGraph2.has(x)).map(id => ({ type: 'missing in graph2', id })),
    			...[...edgesGraph2].filter(x => !edgesGraph1.has(x)).map(id => ({ type: 'missing in graph1', id }))
    		];

    		const currentDifferences = [...nodeDiffs, ...edgeDiffs];
    		changes.set(currentDifferences);
    		const timestamp = new Date().toLocaleString();

    		accumulatedDifferences.update(prev => [
    			...prev,
    			{
    				timestamp,
    				differences: currentDifferences
    			}
    		]);
    	};

    	const loadFromInputArea = graph => {
    		try {
    			const customData = jsYaml.load(graph === 1 ? customScenario1 : customScenario2);
    			const customElements = createGraphElements(customData);

    			if (graph === 1) {
    				dummyData1 = customData;
    				cy1.elements().remove();
    				cy1.add(customElements);
    				cy1.layout({ name: 'cose', animate: true }).run();
    			} else {
    				dummyData2 = customData;
    				cy2.elements().remove();
    				cy2.add(customElements);
    				cy2.layout({ name: 'cose', animate: true }).run();
    			}

    			findDifferences();
    		} catch(e) {
    			alert('Invalid YAML');
    		}
    	};

    	const fitGraph = graph => {
    		if (graph === 1) {
    			cy1.fit();
    		} else {
    			cy2.fit();
    		}
    	};

    	const saveDifferences = () => {
    		const textToSave = $accumulatedDifferences.map(diffSet => `${diffSet.timestamp}\n${diffSet.differences.map(diff => `${diff.type}: ${diff.id}`).join('\n')}`).join('\n\n');
    		const blob = new Blob([textToSave], { type: 'text/plain' });
    		const url = URL.createObjectURL(blob);
    		const a = document.createElement('a');
    		a.href = url;
    		a.download = 'differences.txt';
    		a.click();
    		URL.revokeObjectURL(url);
    	};

    	onMount(() => {
    		cy1 = cytoscape({
    			container: container1,
    			elements: createGraphElements(dummyData1),
    			style: [
    				{
    					selector: 'node',
    					style: {
    						'label': 'data(label)',
    						'background-color': '#61bffc',
    						'text-valign': 'center',
    						'text-halign': 'left'
    					}
    				},
    				{
    					selector: 'edge',
    					style: {
    						'line-color': '#61bffc',
    						'target-arrow-color': '#61bffc',
    						'target-arrow-shape': 'triangle'
    					}
    				}
    			],
    			layout: { name: 'cose', animate: true }
    		});

    		cy2 = cytoscape({
    			container: container2,
    			elements: createGraphElements(dummyData2),
    			style: [
    				{
    					selector: 'node',
    					style: {
    						'label': 'data(label)',
    						'background-color': '#ff5733',
    						'text-valign': 'center',
    						'text-halign': 'left'
    					}
    				},
    				{
    					selector: 'edge',
    					style: {
    						'line-color': '#ff5733',
    						'target-arrow-color': '#ff5733',
    						'target-arrow-shape': 'triangle'
    					}
    				}
    			],
    			layout: { name: 'cose', animate: true }
    		});

    		findDifferences();
    	});

    	onDestroy(() => {
    		if (cy1) cy1.destroy();
    		if (cy2) cy2.destroy();
    	});

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<CodeComparionToolinGraph> was created with unknown prop '${key}'`);
    	});

    	function div0_binding($$value) {
    		binding_callbacks[$$value ? 'unshift' : 'push'](() => {
    			container1 = $$value;
    			$$invalidate(0, container1);
    		});
    	}

    	const click_handler = () => fitGraph(1);

    	function div2_binding($$value) {
    		binding_callbacks[$$value ? 'unshift' : 'push'](() => {
    			container2 = $$value;
    			$$invalidate(1, container2);
    		});
    	}

    	const click_handler_1 = () => fitGraph(2);

    	function textarea0_input_handler() {
    		customScenario1 = this.value;
    		$$invalidate(2, customScenario1);
    	}

    	const click_handler_2 = () => loadFromInputArea(1);

    	function textarea1_input_handler() {
    		customScenario2 = this.value;
    		$$invalidate(3, customScenario2);
    	}

    	const click_handler_3 = () => loadFromInputArea(2);

    	$$self.$capture_state = () => ({
    		onMount,
    		onDestroy,
    		cytoscape,
    		yaml: jsYaml,
    		writable,
    		cy1,
    		cy2,
    		container1,
    		container2,
    		customScenario1,
    		customScenario2,
    		changes,
    		accumulatedDifferences,
    		dummyData1,
    		dummyData2,
    		createGraphElements,
    		findDifferences,
    		loadFromInputArea,
    		fitGraph,
    		saveDifferences,
    		$accumulatedDifferences,
    		$changes
    	});

    	$$self.$inject_state = $$props => {
    		if ('cy1' in $$props) cy1 = $$props.cy1;
    		if ('cy2' in $$props) cy2 = $$props.cy2;
    		if ('container1' in $$props) $$invalidate(0, container1 = $$props.container1);
    		if ('container2' in $$props) $$invalidate(1, container2 = $$props.container2);
    		if ('customScenario1' in $$props) $$invalidate(2, customScenario1 = $$props.customScenario1);
    		if ('customScenario2' in $$props) $$invalidate(3, customScenario2 = $$props.customScenario2);
    		if ('accumulatedDifferences' in $$props) $$invalidate(7, accumulatedDifferences = $$props.accumulatedDifferences);
    		if ('dummyData1' in $$props) dummyData1 = $$props.dummyData1;
    		if ('dummyData2' in $$props) dummyData2 = $$props.dummyData2;
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		container1,
    		container2,
    		customScenario1,
    		customScenario2,
    		$accumulatedDifferences,
    		$changes,
    		changes,
    		accumulatedDifferences,
    		loadFromInputArea,
    		fitGraph,
    		saveDifferences,
    		div0_binding,
    		click_handler,
    		div2_binding,
    		click_handler_1,
    		textarea0_input_handler,
    		click_handler_2,
    		textarea1_input_handler,
    		click_handler_3
    	];
    }

    class CodeComparionToolinGraph extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$3, create_fragment$3, safe_not_equal, {}, null, [-1, -1]);

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "CodeComparionToolinGraph",
    			options,
    			id: create_fragment$3.name
    		});
    	}
    }

    /* src\GraphEditLoadTool.svelte generated by Svelte v3.59.2 */

    const { console: console_1$1 } = globals;
    const file$2 = "src\\GraphEditLoadTool.svelte";

    function get_each_context$1(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[42] = list[i];
    	return child_ctx;
    }

    function get_each_context_1$1(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[45] = list[i];
    	return child_ctx;
    }

    function get_each_context_2$1(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[45] = list[i];
    	return child_ctx;
    }

    // (383:8) {:else}
    function create_else_block_3(ctx) {
    	let p;

    	const block = {
    		c: function create() {
    			p = element$1("p");
    			p.textContent = "Click on a node to see its data.";
    			add_location(p, file$2, 383, 10, 11916);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, p, anchor);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(p);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_else_block_3.name,
    		type: "else",
    		source: "(383:8) {:else}",
    		ctx
    	});

    	return block;
    }

    // (362:8) {#if $selectedNodeData}
    function create_if_block_3(ctx) {
    	let pre;
    	let t0_value = JSON.stringify(/*$selectedNodeData*/ ctx[9], null, 2) + "";
    	let t0;
    	let t1;
    	let div0;
    	let label0;
    	let t2;
    	let input0;
    	let t3;
    	let label1;
    	let t4;
    	let input1;
    	let t5;
    	let button0;
    	let t7;
    	let div1;
    	let button1;
    	let t9;
    	let button2;
    	let t11;
    	let label2;
    	let t12;
    	let input2;
    	let mounted;
    	let dispose;

    	const block = {
    		c: function create() {
    			pre = element$1("pre");
    			t0 = text(t0_value);
    			t1 = space();
    			div0 = element$1("div");
    			label0 = element$1("label");
    			t2 = text("Label:\r\n              ");
    			input0 = element$1("input");
    			t3 = space();
    			label1 = element$1("label");
    			t4 = text("Type:\r\n              ");
    			input1 = element$1("input");
    			t5 = space();
    			button0 = element$1("button");
    			button0.textContent = "Update Node";
    			t7 = space();
    			div1 = element$1("div");
    			button1 = element$1("button");
    			button1.textContent = "Delete Node";
    			t9 = space();
    			button2 = element$1("button");
    			button2.textContent = "Add Nodes";
    			t11 = space();
    			label2 = element$1("label");
    			t12 = text("Number of nodes to add:\r\n              ");
    			input2 = element$1("input");
    			add_location(pre, file$2, 362, 10, 11091);
    			attr_dev(input0, "type", "text");
    			add_location(input0, file$2, 366, 14, 11236);
    			attr_dev(label0, "class", "label svelte-y6fsmu");
    			add_location(label0, file$2, 364, 12, 11177);
    			attr_dev(input1, "type", "text");
    			add_location(input1, file$2, 370, 14, 11377);
    			attr_dev(label1, "class", "label svelte-y6fsmu");
    			add_location(label1, file$2, 368, 12, 11319);
    			add_location(button0, file$2, 372, 12, 11459);
    			add_location(div0, file$2, 363, 10, 11158);
    			add_location(button1, file$2, 375, 12, 11576);
    			add_location(button2, file$2, 376, 12, 11642);
    			attr_dev(input2, "type", "number");
    			attr_dev(input2, "min", "1");
    			add_location(input2, file$2, 379, 14, 11784);
    			attr_dev(label2, "class", "label svelte-y6fsmu");
    			add_location(label2, file$2, 377, 12, 11708);
    			attr_dev(div1, "class", "buttons svelte-y6fsmu");
    			add_location(div1, file$2, 374, 10, 11541);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, pre, anchor);
    			append_dev(pre, t0);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, div0, anchor);
    			append_dev(div0, label0);
    			append_dev(label0, t2);
    			append_dev(label0, input0);
    			set_input_value(input0, /*updatedLabel*/ ctx[1]);
    			append_dev(div0, t3);
    			append_dev(div0, label1);
    			append_dev(label1, t4);
    			append_dev(label1, input1);
    			set_input_value(input1, /*updatedType*/ ctx[2]);
    			append_dev(div0, t5);
    			append_dev(div0, button0);
    			insert_dev(target, t7, anchor);
    			insert_dev(target, div1, anchor);
    			append_dev(div1, button1);
    			append_dev(div1, t9);
    			append_dev(div1, button2);
    			append_dev(div1, t11);
    			append_dev(div1, label2);
    			append_dev(label2, t12);
    			append_dev(label2, input2);
    			set_input_value(input2, /*numberOfNodesToAdd*/ ctx[3]);

    			if (!mounted) {
    				dispose = [
    					listen_dev(input0, "input", /*input0_input_handler*/ ctx[30]),
    					listen_dev(input1, "input", /*input1_input_handler*/ ctx[31]),
    					listen_dev(button0, "click", /*handleUpdate*/ ctx[20], false, false, false, false),
    					listen_dev(button1, "click", /*handleDelete*/ ctx[21], false, false, false, false),
    					listen_dev(button2, "click", /*handleAddNodes*/ ctx[22], false, false, false, false),
    					listen_dev(input2, "input", /*input2_input_handler*/ ctx[32])
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$selectedNodeData*/ 512 && t0_value !== (t0_value = JSON.stringify(/*$selectedNodeData*/ ctx[9], null, 2) + "")) set_data_dev(t0, t0_value);

    			if (dirty[0] & /*updatedLabel*/ 2 && input0.value !== /*updatedLabel*/ ctx[1]) {
    				set_input_value(input0, /*updatedLabel*/ ctx[1]);
    			}

    			if (dirty[0] & /*updatedType*/ 4 && input1.value !== /*updatedType*/ ctx[2]) {
    				set_input_value(input1, /*updatedType*/ ctx[2]);
    			}

    			if (dirty[0] & /*numberOfNodesToAdd*/ 8 && to_number(input2.value) !== /*numberOfNodesToAdd*/ ctx[3]) {
    				set_input_value(input2, /*numberOfNodesToAdd*/ ctx[3]);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(pre);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(div0);
    			if (detaching) detach_dev(t7);
    			if (detaching) detach_dev(div1);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_3.name,
    		type: "if",
    		source: "(362:8) {#if $selectedNodeData}",
    		ctx
    	});

    	return block;
    }

    // (399:12) {:else}
    function create_else_block_2(ctx) {
    	let select;
    	let option;

    	const block = {
    		c: function create() {
    			select = element$1("select");
    			option = element$1("option");
    			option.textContent = "Loading nodes...";
    			option.__value = "Loading nodes...";
    			option.value = option.__value;
    			add_location(option, file$2, 400, 16, 12561);
    			select.disabled = true;
    			add_location(select, file$2, 399, 14, 12526);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, select, anchor);
    			append_dev(select, option);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(select);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_else_block_2.name,
    		type: "else",
    		source: "(399:12) {:else}",
    		ctx
    	});

    	return block;
    }

    // (392:12) {#if $cyReady}
    function create_if_block_2(ctx) {
    	let select;
    	let option;
    	let mounted;
    	let dispose;
    	let each_value_2 = /*$nodeIds*/ ctx[11];
    	validate_each_argument(each_value_2);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_2.length; i += 1) {
    		each_blocks[i] = create_each_block_2$1(get_each_context_2$1(ctx, each_value_2, i));
    	}

    	const block = {
    		c: function create() {
    			select = element$1("select");
    			option = element$1("option");
    			option.textContent = "Select source node";

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			option.__value = "";
    			option.value = option.__value;
    			option.disabled = true;
    			add_location(option, file$2, 393, 16, 12294);
    			if (/*sourceNodeId*/ ctx[4] === void 0) add_render_callback(() => /*select_change_handler*/ ctx[33].call(select));
    			add_location(select, file$2, 392, 14, 12242);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, select, anchor);
    			append_dev(select, option);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(select, null);
    				}
    			}

    			select_option(select, /*sourceNodeId*/ ctx[4], true);

    			if (!mounted) {
    				dispose = listen_dev(select, "change", /*select_change_handler*/ ctx[33]);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$nodeIds*/ 2048) {
    				each_value_2 = /*$nodeIds*/ ctx[11];
    				validate_each_argument(each_value_2);
    				let i;

    				for (i = 0; i < each_value_2.length; i += 1) {
    					const child_ctx = get_each_context_2$1(ctx, each_value_2, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_2$1(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(select, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_2.length;
    			}

    			if (dirty[0] & /*sourceNodeId, $nodeIds*/ 2064) {
    				select_option(select, /*sourceNodeId*/ ctx[4]);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(select);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_2.name,
    		type: "if",
    		source: "(392:12) {#if $cyReady}",
    		ctx
    	});

    	return block;
    }

    // (395:16) {#each $nodeIds as id}
    function create_each_block_2$1(ctx) {
    	let option;
    	let t_value = /*id*/ ctx[45] + "";
    	let t;
    	let option_value_value;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = option_value_value = /*id*/ ctx[45];
    			option.value = option.__value;
    			add_location(option, file$2, 395, 18, 12407);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$nodeIds*/ 2048 && t_value !== (t_value = /*id*/ ctx[45] + "")) set_data_dev(t, t_value);

    			if (dirty[0] & /*$nodeIds*/ 2048 && option_value_value !== (option_value_value = /*id*/ ctx[45])) {
    				prop_dev(option, "__value", option_value_value);
    				option.value = option.__value;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_2$1.name,
    		type: "each",
    		source: "(395:16) {#each $nodeIds as id}",
    		ctx
    	});

    	return block;
    }

    // (414:12) {:else}
    function create_else_block_1(ctx) {
    	let select;
    	let option;

    	const block = {
    		c: function create() {
    			select = element$1("select");
    			option = element$1("option");
    			option.textContent = "Loading nodes...";
    			option.__value = "Loading nodes...";
    			option.value = option.__value;
    			add_location(option, file$2, 415, 16, 13083);
    			select.disabled = true;
    			add_location(select, file$2, 414, 14, 13048);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, select, anchor);
    			append_dev(select, option);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(select);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_else_block_1.name,
    		type: "else",
    		source: "(414:12) {:else}",
    		ctx
    	});

    	return block;
    }

    // (407:12) {#if $cyReady}
    function create_if_block_1(ctx) {
    	let select;
    	let option;
    	let mounted;
    	let dispose;
    	let each_value_1 = /*$nodeIds*/ ctx[11];
    	validate_each_argument(each_value_1);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks[i] = create_each_block_1$1(get_each_context_1$1(ctx, each_value_1, i));
    	}

    	const block = {
    		c: function create() {
    			select = element$1("select");
    			option = element$1("option");
    			option.textContent = "Select target node";

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			option.__value = "";
    			option.value = option.__value;
    			option.disabled = true;
    			add_location(option, file$2, 408, 16, 12816);
    			if (/*targetNodeId*/ ctx[5] === void 0) add_render_callback(() => /*select_change_handler_1*/ ctx[34].call(select));
    			add_location(select, file$2, 407, 14, 12764);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, select, anchor);
    			append_dev(select, option);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(select, null);
    				}
    			}

    			select_option(select, /*targetNodeId*/ ctx[5], true);

    			if (!mounted) {
    				dispose = listen_dev(select, "change", /*select_change_handler_1*/ ctx[34]);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$nodeIds*/ 2048) {
    				each_value_1 = /*$nodeIds*/ ctx[11];
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1$1(ctx, each_value_1, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_1$1(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(select, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_1.length;
    			}

    			if (dirty[0] & /*targetNodeId, $nodeIds*/ 2080) {
    				select_option(select, /*targetNodeId*/ ctx[5]);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(select);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block_1.name,
    		type: "if",
    		source: "(407:12) {#if $cyReady}",
    		ctx
    	});

    	return block;
    }

    // (410:16) {#each $nodeIds as id}
    function create_each_block_1$1(ctx) {
    	let option;
    	let t_value = /*id*/ ctx[45] + "";
    	let t;
    	let option_value_value;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = option_value_value = /*id*/ ctx[45];
    			option.value = option.__value;
    			add_location(option, file$2, 410, 18, 12929);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$nodeIds*/ 2048 && t_value !== (t_value = /*id*/ ctx[45] + "")) set_data_dev(t, t_value);

    			if (dirty[0] & /*$nodeIds*/ 2048 && option_value_value !== (option_value_value = /*id*/ ctx[45])) {
    				prop_dev(option, "__value", option_value_value);
    				option.value = option.__value;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1$1.name,
    		type: "each",
    		source: "(410:16) {#each $nodeIds as id}",
    		ctx
    	});

    	return block;
    }

    // (432:12) {:else}
    function create_else_block(ctx) {
    	let select;
    	let option;

    	const block = {
    		c: function create() {
    			select = element$1("select");
    			option = element$1("option");
    			option.textContent = "Loading edges...";
    			option.__value = "Loading edges...";
    			option.value = option.__value;
    			add_location(option, file$2, 433, 16, 13720);
    			select.disabled = true;
    			add_location(select, file$2, 432, 14, 13685);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, select, anchor);
    			append_dev(select, option);
    		},
    		p: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(select);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_else_block.name,
    		type: "else",
    		source: "(432:12) {:else}",
    		ctx
    	});

    	return block;
    }

    // (425:12) {#if $cyReady}
    function create_if_block$1(ctx) {
    	let select;
    	let option;
    	let mounted;
    	let dispose;
    	let each_value = /*$edgeIds*/ ctx[12];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block$1(get_each_context$1(ctx, each_value, i));
    	}

    	const block = {
    		c: function create() {
    			select = element$1("select");
    			option = element$1("option");
    			option.textContent = "Select edge to delete";

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			option.__value = "";
    			option.value = option.__value;
    			option.disabled = true;
    			add_location(option, file$2, 426, 16, 13444);
    			if (/*selectedEdge*/ ctx[6] === void 0) add_render_callback(() => /*select_change_handler_2*/ ctx[35].call(select));
    			add_location(select, file$2, 425, 14, 13392);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, select, anchor);
    			append_dev(select, option);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(select, null);
    				}
    			}

    			select_option(select, /*selectedEdge*/ ctx[6], true);

    			if (!mounted) {
    				dispose = listen_dev(select, "change", /*select_change_handler_2*/ ctx[35]);
    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$edgeIds*/ 4096) {
    				each_value = /*$edgeIds*/ ctx[12];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context$1(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block$1(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(select, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}

    			if (dirty[0] & /*selectedEdge, $edgeIds*/ 4160) {
    				select_option(select, /*selectedEdge*/ ctx[6]);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(select);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block$1.name,
    		type: "if",
    		source: "(425:12) {#if $cyReady}",
    		ctx
    	});

    	return block;
    }

    // (428:16) {#each $edgeIds as edge}
    function create_each_block$1(ctx) {
    	let option;
    	let t_value = /*edge*/ ctx[42] + "";
    	let t;
    	let option_value_value;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = option_value_value = /*edge*/ ctx[42];
    			option.value = option.__value;
    			add_location(option, file$2, 428, 18, 13562);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*$edgeIds*/ 4096 && t_value !== (t_value = /*edge*/ ctx[42] + "")) set_data_dev(t, t_value);

    			if (dirty[0] & /*$edgeIds*/ 4096 && option_value_value !== (option_value_value = /*edge*/ ctx[42])) {
    				prop_dev(option, "__value", option_value_value);
    				option.value = option.__value;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block$1.name,
    		type: "each",
    		source: "(428:16) {#each $edgeIds as edge}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$2(ctx) {
    	let div11;
    	let h1;
    	let t1;
    	let div5;
    	let div0;
    	let t2;
    	let div4;
    	let h3;
    	let t4;
    	let t5;
    	let div1;
    	let button0;
    	let t7;
    	let div2;
    	let label0;
    	let t8;
    	let t9;
    	let label1;
    	let t10;
    	let t11;
    	let button1;
    	let t13;
    	let div3;
    	let label2;
    	let t14;
    	let t15;
    	let button2;
    	let t17;
    	let div10;
    	let button3;
    	let t19;
    	let button4;
    	let t21;
    	let button5;
    	let t23;
    	let button6;
    	let t25;
    	let button7;
    	let t27;
    	let button8;
    	let t29;
    	let div9;
    	let div6;
    	let label3;
    	let t31;
    	let textarea0;
    	let t32;
    	let div7;
    	let label4;
    	let t34;
    	let textarea1;
    	let t35;
    	let div8;
    	let p;
    	let t37;
    	let pre;
    	let mounted;
    	let dispose;

    	function select_block_type(ctx, dirty) {
    		if (/*$selectedNodeData*/ ctx[9]) return create_if_block_3;
    		return create_else_block_3;
    	}

    	let current_block_type = select_block_type(ctx);
    	let if_block0 = current_block_type(ctx);

    	function select_block_type_1(ctx, dirty) {
    		if (/*$cyReady*/ ctx[10]) return create_if_block_2;
    		return create_else_block_2;
    	}

    	let current_block_type_1 = select_block_type_1(ctx);
    	let if_block1 = current_block_type_1(ctx);

    	function select_block_type_2(ctx, dirty) {
    		if (/*$cyReady*/ ctx[10]) return create_if_block_1;
    		return create_else_block_1;
    	}

    	let current_block_type_2 = select_block_type_2(ctx);
    	let if_block2 = current_block_type_2(ctx);

    	function select_block_type_3(ctx, dirty) {
    		if (/*$cyReady*/ ctx[10]) return create_if_block$1;
    		return create_else_block;
    	}

    	let current_block_type_3 = select_block_type_3(ctx);
    	let if_block3 = current_block_type_3(ctx);

    	const block = {
    		c: function create() {
    			div11 = element$1("div");
    			h1 = element$1("h1");
    			h1.textContent = "Code Outline Graph";
    			t1 = space();
    			div5 = element$1("div");
    			div0 = element$1("div");
    			t2 = space();
    			div4 = element$1("div");
    			h3 = element$1("h3");
    			h3.textContent = "Node Data";
    			t4 = space();
    			if_block0.c();
    			t5 = space();
    			div1 = element$1("div");
    			button0 = element$1("button");
    			button0.textContent = "Add Node Without Edges";
    			t7 = space();
    			div2 = element$1("div");
    			label0 = element$1("label");
    			t8 = text("Source Node ID:\r\n            ");
    			if_block1.c();
    			t9 = space();
    			label1 = element$1("label");
    			t10 = text("Target Node ID:\r\n            ");
    			if_block2.c();
    			t11 = space();
    			button1 = element$1("button");
    			button1.textContent = "Add Edge";
    			t13 = space();
    			div3 = element$1("div");
    			label2 = element$1("label");
    			t14 = text("Select Edge:\r\n            ");
    			if_block3.c();
    			t15 = space();
    			button2 = element$1("button");
    			button2.textContent = "Delete Edge";
    			t17 = space();
    			div10 = element$1("div");
    			button3 = element$1("button");
    			button3.textContent = "Fit Graph";
    			t19 = space();
    			button4 = element$1("button");
    			button4.textContent = "Load Dummy Scenario";
    			t21 = space();
    			button5 = element$1("button");
    			button5.textContent = "Space Out Nodes";
    			t23 = space();
    			button6 = element$1("button");
    			button6.textContent = "Load from Input Area";
    			t25 = space();
    			button7 = element$1("button");
    			button7.textContent = "Edit Graph Data";
    			t27 = space();
    			button8 = element$1("button");
    			button8.textContent = "Add Empty Lines";
    			t29 = space();
    			div9 = element$1("div");
    			div6 = element$1("div");
    			label3 = element$1("label");
    			label3.textContent = "Current Graph Data (readonly)";
    			t31 = space();
    			textarea0 = element$1("textarea");
    			t32 = space();
    			div7 = element$1("div");
    			label4 = element$1("label");
    			label4.textContent = "Custom Scenario (editable)";
    			t34 = space();
    			textarea1 = element$1("textarea");
    			t35 = space();
    			div8 = element$1("div");
    			p = element$1("p");
    			p.textContent = "YAML Format: (to prompt with)";
    			t37 = space();
    			pre = element$1("pre");
    			pre.textContent = "  - file: CustomScenario\r\n    symbols:\r\n      - id: functionA\r\n        type: function\r\n      - id: variableX\r\n        type: variable\r\n      - id: functionB\r\n        type: function\r\n      - id: variableY\r\n        type: variable\r\n    edges:\r\n      - source: functionA\r\n        target: variableX\r\n        type: function-to-variable\r\n      - source: variableX\r\n        target: functionB\r\n        type: variable-to-function\r\n      - source: functionB\r\n        target: variableY\r\n        type: function-to-variable\r\n          ";
    			add_location(h1, file$2, 356, 4, 10882);
    			attr_dev(div0, "id", "cy");
    			attr_dev(div0, "class", "svelte-y6fsmu");
    			add_location(div0, file$2, 358, 6, 10950);
    			add_location(h3, file$2, 360, 8, 11028);
    			add_location(button0, file$2, 386, 10, 12013);
    			attr_dev(div1, "class", "buttons svelte-y6fsmu");
    			add_location(div1, file$2, 385, 8, 11980);
    			attr_dev(label0, "class", "label svelte-y6fsmu");
    			add_location(label0, file$2, 389, 10, 12148);
    			attr_dev(label1, "class", "label svelte-y6fsmu");
    			add_location(label1, file$2, 404, 10, 12670);
    			add_location(button1, file$2, 419, 10, 13192);
    			attr_dev(div2, "class", "buttons svelte-y6fsmu");
    			add_location(div2, file$2, 388, 8, 12115);
    			attr_dev(label2, "class", "label svelte-y6fsmu");
    			add_location(label2, file$2, 422, 10, 13301);
    			add_location(button2, file$2, 437, 10, 13829);
    			attr_dev(div3, "class", "buttons svelte-y6fsmu");
    			add_location(div3, file$2, 421, 8, 13268);
    			attr_dev(div4, "id", "nodeData");
    			attr_dev(div4, "class", "svelte-y6fsmu");
    			add_location(div4, file$2, 359, 6, 10999);
    			attr_dev(div5, "class", "cyandnodedata svelte-y6fsmu");
    			add_location(div5, file$2, 357, 4, 10915);
    			add_location(button3, file$2, 443, 6, 13966);
    			add_location(button4, file$2, 444, 6, 14020);
    			add_location(button5, file$2, 445, 6, 14094);
    			add_location(button6, file$2, 446, 6, 14159);
    			add_location(button7, file$2, 447, 6, 14233);
    			add_location(button8, file$2, 448, 6, 14302);
    			attr_dev(label3, "class", "label svelte-y6fsmu");
    			add_location(label3, file$2, 451, 10, 14426);
    			textarea0.readOnly = true;
    			attr_dev(textarea0, "placeholder", "Current graph data (readonly)");
    			attr_dev(textarea0, "class", "svelte-y6fsmu");
    			add_location(textarea0, file$2, 452, 10, 14496);
    			add_location(div6, file$2, 450, 8, 14409);
    			attr_dev(label4, "class", "label svelte-y6fsmu");
    			add_location(label4, file$2, 455, 10, 14643);
    			attr_dev(textarea1, "placeholder", "Enter custom scenario in YAML format");
    			attr_dev(textarea1, "class", "svelte-y6fsmu");
    			add_location(textarea1, file$2, 456, 10, 14710);
    			add_location(div7, file$2, 454, 8, 14626);
    			add_location(p, file$2, 459, 10, 14875);
    			add_location(pre, file$2, 460, 10, 14923);
    			attr_dev(div8, "class", "guidance-text svelte-y6fsmu");
    			add_location(div8, file$2, 458, 8, 14836);
    			attr_dev(div9, "class", "textarea-container svelte-y6fsmu");
    			add_location(div9, file$2, 449, 6, 14367);
    			attr_dev(div10, "id", "controls");
    			attr_dev(div10, "class", "svelte-y6fsmu");
    			add_location(div10, file$2, 442, 4, 13939);
    			add_location(div11, file$2, 355, 2, 10871);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div11, anchor);
    			append_dev(div11, h1);
    			append_dev(div11, t1);
    			append_dev(div11, div5);
    			append_dev(div5, div0);
    			/*div0_binding*/ ctx[29](div0);
    			append_dev(div5, t2);
    			append_dev(div5, div4);
    			append_dev(div4, h3);
    			append_dev(div4, t4);
    			if_block0.m(div4, null);
    			append_dev(div4, t5);
    			append_dev(div4, div1);
    			append_dev(div1, button0);
    			append_dev(div4, t7);
    			append_dev(div4, div2);
    			append_dev(div2, label0);
    			append_dev(label0, t8);
    			if_block1.m(label0, null);
    			append_dev(div2, t9);
    			append_dev(div2, label1);
    			append_dev(label1, t10);
    			if_block2.m(label1, null);
    			append_dev(div2, t11);
    			append_dev(div2, button1);
    			append_dev(div4, t13);
    			append_dev(div4, div3);
    			append_dev(div3, label2);
    			append_dev(label2, t14);
    			if_block3.m(label2, null);
    			append_dev(div3, t15);
    			append_dev(div3, button2);
    			append_dev(div11, t17);
    			append_dev(div11, div10);
    			append_dev(div10, button3);
    			append_dev(div10, t19);
    			append_dev(div10, button4);
    			append_dev(div10, t21);
    			append_dev(div10, button5);
    			append_dev(div10, t23);
    			append_dev(div10, button6);
    			append_dev(div10, t25);
    			append_dev(div10, button7);
    			append_dev(div10, t27);
    			append_dev(div10, button8);
    			append_dev(div10, t29);
    			append_dev(div10, div9);
    			append_dev(div9, div6);
    			append_dev(div6, label3);
    			append_dev(div6, t31);
    			append_dev(div6, textarea0);
    			set_input_value(textarea0, /*currentGraphData*/ ctx[8]);
    			append_dev(div9, t32);
    			append_dev(div9, div7);
    			append_dev(div7, label4);
    			append_dev(div7, t34);
    			append_dev(div7, textarea1);
    			set_input_value(textarea1, /*customScenario*/ ctx[7]);
    			append_dev(div9, t35);
    			append_dev(div9, div8);
    			append_dev(div8, p);
    			append_dev(div8, t37);
    			append_dev(div8, pre);

    			if (!mounted) {
    				dispose = [
    					listen_dev(button0, "click", /*handleAddNodeWithoutEdges*/ ctx[23], false, false, false, false),
    					listen_dev(button1, "click", /*handleAddEdge*/ ctx[24], false, false, false, false),
    					listen_dev(button2, "click", /*handleDeleteEdge*/ ctx[25], false, false, false, false),
    					listen_dev(button3, "click", /*fitGraph*/ ctx[27], false, false, false, false),
    					listen_dev(button4, "click", /*initializeScenario*/ ctx[17], false, false, false, false),
    					listen_dev(button5, "click", /*spaceOutNodes*/ ctx[26], false, false, false, false),
    					listen_dev(button6, "click", /*loadFromInputArea*/ ctx[18], false, false, false, false),
    					listen_dev(button7, "click", /*loadFromGraphData*/ ctx[19], false, false, false, false),
    					listen_dev(button8, "click", /*addEmptyLines*/ ctx[28], false, false, false, false),
    					listen_dev(textarea0, "input", /*textarea0_input_handler*/ ctx[36]),
    					listen_dev(textarea1, "input", /*textarea1_input_handler*/ ctx[37])
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (current_block_type === (current_block_type = select_block_type(ctx)) && if_block0) {
    				if_block0.p(ctx, dirty);
    			} else {
    				if_block0.d(1);
    				if_block0 = current_block_type(ctx);

    				if (if_block0) {
    					if_block0.c();
    					if_block0.m(div4, t5);
    				}
    			}

    			if (current_block_type_1 === (current_block_type_1 = select_block_type_1(ctx)) && if_block1) {
    				if_block1.p(ctx, dirty);
    			} else {
    				if_block1.d(1);
    				if_block1 = current_block_type_1(ctx);

    				if (if_block1) {
    					if_block1.c();
    					if_block1.m(label0, null);
    				}
    			}

    			if (current_block_type_2 === (current_block_type_2 = select_block_type_2(ctx)) && if_block2) {
    				if_block2.p(ctx, dirty);
    			} else {
    				if_block2.d(1);
    				if_block2 = current_block_type_2(ctx);

    				if (if_block2) {
    					if_block2.c();
    					if_block2.m(label1, null);
    				}
    			}

    			if (current_block_type_3 === (current_block_type_3 = select_block_type_3(ctx)) && if_block3) {
    				if_block3.p(ctx, dirty);
    			} else {
    				if_block3.d(1);
    				if_block3 = current_block_type_3(ctx);

    				if (if_block3) {
    					if_block3.c();
    					if_block3.m(label2, null);
    				}
    			}

    			if (dirty[0] & /*currentGraphData*/ 256) {
    				set_input_value(textarea0, /*currentGraphData*/ ctx[8]);
    			}

    			if (dirty[0] & /*customScenario*/ 128) {
    				set_input_value(textarea1, /*customScenario*/ ctx[7]);
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div11);
    			/*div0_binding*/ ctx[29](null);
    			if_block0.d();
    			if_block1.d();
    			if_block2.d();
    			if_block3.d();
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$2.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance$2($$self, $$props, $$invalidate) {
    	let $selectedNodeData;
    	let $cyReady;
    	let $nodeIds;
    	let $edgeIds;
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('GraphEditLoadTool', slots, []);
    	let cy;
    	let container;
    	let selectedNodeData = writable(null);
    	validate_store(selectedNodeData, 'selectedNodeData');
    	component_subscribe($$self, selectedNodeData, value => $$invalidate(9, $selectedNodeData = value));
    	let updatedLabel = "";
    	let updatedType = "";
    	let numberOfNodesToAdd = 1;
    	let sourceNodeId = "";
    	let targetNodeId = "";
    	let selectedEdge = "";
    	let customScenario = ""; // Textarea input for custom scenarios
    	let currentGraphData = ""; // Textarea for displaying current graph data
    	const cyReady = writable(false); // Store to track if Cytoscape instance is ready
    	validate_store(cyReady, 'cyReady');
    	component_subscribe($$self, cyReady, value => $$invalidate(10, $cyReady = value));
    	const nodeIds = writable([]); // Store to track the list of node IDs
    	validate_store(nodeIds, 'nodeIds');
    	component_subscribe($$self, nodeIds, value => $$invalidate(11, $nodeIds = value));
    	const edgeIds = writable([]); // Store to track the list of edges
    	validate_store(edgeIds, 'edgeIds');
    	component_subscribe($$self, edgeIds, value => $$invalidate(12, $edgeIds = value));

    	const dummyData = [
    		{
    			file: 'ComponentA',
    			symbols: [
    				{ id: 'function1', type: 'function' },
    				{ id: 'variable1', type: 'variable' }
    			],
    			edges: [{ source: 'variable1', target: 'function1' }]
    		},
    		{
    			file: 'ComponentB',
    			symbols: [
    				{ id: 'function2', type: 'function' },
    				{ id: 'variable2', type: 'variable' }
    			],
    			edges: [{ source: 'variable2', target: 'function2' }]
    		}
    	];

    	const createGraphElements = data => {
    		const elements = [];

    		data.forEach(file => {
    			file.symbols.forEach(symbol => {
    				elements.push({
    					data: {
    						id: symbol.id,
    						label: `${symbol.id} (${symbol.type})`,
    						type: symbol.type
    					}
    				});
    			});

    			file.edges.forEach(edge => {
    				if (edge.source && edge.target && edge.type) {
    					elements.push({
    						data: {
    							source: edge.source,
    							target: edge.target,
    							type: edge.type
    						}
    					});
    				} else {
    					console.error('Invalid edge format:', edge);
    				}
    			});
    		});

    		return elements;
    	};

    	const initializeScenario = () => {
    		const scenarioElements = [
    			{
    				data: {
    					id: 'function1',
    					label: 'Function 1',
    					type: 'function'
    				}
    			},
    			{
    				data: {
    					id: 'variable1',
    					label: 'Variable 1',
    					type: 'variable'
    				}
    			},
    			{
    				data: {
    					id: 'function2',
    					label: 'Function 2',
    					type: 'function'
    				}
    			},
    			{
    				data: {
    					id: 'variable2',
    					label: 'Variable 2',
    					type: 'variable'
    				}
    			},
    			{
    				data: {
    					id: 'function3',
    					label: 'Function 3',
    					type: 'function'
    				}
    			},
    			{
    				data: {
    					id: 'variable3',
    					label: 'Variable 3',
    					type: 'variable'
    				}
    			},
    			{
    				data: {
    					source: 'function1',
    					target: 'variable1',
    					type: 'function-to-variable'
    				}
    			},
    			{
    				data: {
    					source: 'variable1',
    					target: 'function2',
    					type: 'variable-to-function'
    				}
    			},
    			{
    				data: {
    					source: 'function2',
    					target: 'variable2',
    					type: 'function-to-variable'
    				}
    			},
    			{
    				data: {
    					source: 'function2',
    					target: 'function3',
    					type: 'function-to-function'
    				}
    			},
    			{
    				data: {
    					source: 'function3',
    					target: 'variable3',
    					type: 'function-to-variable'
    				}
    			}
    		];

    		cy.add(scenarioElements);
    		cy.layout({ name: 'cose', animate: true }).run();
    		updateNodeAndEdgeIds();
    	};

    	const loadFromInputArea = () => {
    		try {
    			const customData = jsYaml.load(customScenario);
    			const customElements = createGraphElements(customData);
    			cy.elements().remove();
    			cy.add(customElements);
    			cy.layout({ name: 'cose', animate: true }).run();
    			updateNodeAndEdgeIds();
    		} catch(e) {
    			alert('Invalid YAML');
    		}
    	};

    	const loadFromGraphData = () => {
    		const symbols = cy.nodes().map(node => ({
    			id: node.data('id'),
    			type: node.data('type')
    		}));

    		const edges = cy.edges().map(edge => ({
    			source: edge.data('source'),
    			target: edge.data('target'),
    			type: edge.data('type')
    		}));

    		const graphData = [{ file: "CustomScenario", symbols, edges }];
    		$$invalidate(8, currentGraphData = jsYaml.dump(graphData));
    		$$invalidate(7, customScenario = currentGraphData); // Load data into the textarea as well
    	};

    	const handleUpdate = () => {
    		selectedNodeData.update(data => {
    			const newData = {
    				...data,
    				label: updatedLabel,
    				type: updatedType
    			};

    			updateNodeData(data.id, newData);
    			return newData;
    		});
    	};

    	const handleDelete = () => {
    		if (confirm("Are you sure you want to delete this node?")) {
    			selectedNodeData.update(data => {
    				const node = cy.getElementById(data.id);

    				if (node) {
    					node.remove();
    					selectedNodeData.set(null);
    					updateNodeAndEdgeIds();
    				}

    				return null;
    			});
    		}
    	};

    	const handleAddNodes = () => {
    		selectedNodeData.update(data => {
    			for (let i = 0; i < numberOfNodesToAdd; i++) {
    				const newId = `node${cy.nodes().length + 1}`;

    				const newNode = {
    					data: { id: newId, label: newId, type: 'new' }
    				};

    				cy.add(newNode);

    				cy.add({
    					data: {
    						source: data.id,
    						target: newId,
    						type: 'function-to-variable'
    					}
    				});
    			}

    			cy.layout({ name: 'cose', animate: true }).run();
    			updateNodeAndEdgeIds();
    			return data;
    		});
    	};

    	const handleAddNodeWithoutEdges = () => {
    		const newId = `node${cy.nodes().length + 1}`;

    		const newNode = {
    			data: { id: newId, label: newId, type: 'new' }
    		};

    		cy.add(newNode);
    		cy.layout({ name: 'cose', animate: true }).run();
    		updateNodeAndEdgeIds();
    	};

    	const handleAddEdge = () => {
    		if (sourceNodeId && targetNodeId && sourceNodeId !== targetNodeId) {
    			const sourceNode = cy.getElementById(sourceNodeId);
    			const targetNode = cy.getElementById(targetNodeId);
    			let edgeType = 'unknown';

    			if (sourceNode.data('type') === 'variable' && targetNode.data('type') === 'function') {
    				edgeType = 'variable-to-function';
    			} else if (sourceNode.data('type') === 'function' && targetNode.data('type') === 'variable') {
    				edgeType = 'function-to-variable';
    			}

    			cy.add({
    				data: {
    					source: sourceNodeId,
    					target: targetNodeId,
    					type: edgeType
    				}
    			});

    			cy.layout({ name: 'cose', animate: true }).run();
    			updateNodeAndEdgeIds();
    		}
    	};

    	const handleDeleteEdge = () => {
    		if (selectedEdge) {
    			const [source, target] = selectedEdge.split(' -> ');
    			const edge = cy.edges(`[source="${source}"][target="${target}"]`);

    			if (edge) {
    				edge.remove();
    				cy.layout({ name: 'cose', animate: true }).run();
    				updateNodeAndEdgeIds();
    			}
    		}
    	};

    	const updateNodeAndEdgeIds = () => {
    		const ids = cy.nodes().map(node => node.id());
    		nodeIds.set(ids);
    		const edges = cy.edges().map(edge => `${edge.data('source')} -> ${edge.data('target')}`);
    		edgeIds.set(edges);
    	};

    	const spaceOutNodes = () => {
    		cy.layout({
    			name: 'grid',
    			padding: 10,
    			avoidOverlap: true,
    			avoidOverlapPadding: 20
    		}).run();
    	};

    	onMount(() => {
    		const elements = createGraphElements(dummyData);

    		cy = cytoscape({
    			container,
    			elements,
    			style: [
    				{
    					selector: 'node',
    					style: {
    						'label': 'data(label)',
    						'text-valign': 'center',
    						'text-halign': 'center',
    						'background-color': '#61bffc',
    						'color': '#fff',
    						'text-outline-width': 2,
    						'text-outline-color': '#888'
    					}
    				},
    				{
    					selector: 'edge',
    					style: {
    						'width': 3,
    						'line-color'(ele) {
    							return ele.data('type') === 'variable-to-function'
    							? '#33FF57'
    							: ele.data('type') === 'function-to-variable'
    								? '#FF5733'
    								: '#ccc';
    						},
    						'target-arrow-color'(ele) {
    							return ele.data('type') === 'variable-to-function'
    							? '#33FF57'
    							: ele.data('type') === 'function-to-variable'
    								? '#FF5733'
    								: '#ccc';
    						},
    						'target-arrow-shape': 'triangle'
    					}
    				}
    			],
    			layout: { name: 'cose', animate: true }
    		});

    		cy.on('tap', 'node', function (event) {
    			const node = event.target;
    			selectedNodeData.set(node.data());
    			$$invalidate(1, updatedLabel = node.data().label);
    			$$invalidate(2, updatedType = node.data().type);
    		});

    		cyReady.set(true); // Set cyReady to true once Cytoscape is initialized
    		updateNodeAndEdgeIds(); // Initialize node and edge IDs
    	});

    	onDestroy(() => {
    		if (cy) {
    			cy.destroy();
    		}
    	});

    	const fitGraph = () => {
    		if (cy) {
    			cy.fit();
    		}
    	};

    	const addEmptyLines = () => {
    		const currentLines = currentGraphData.split('\n');
    		const customLines = customScenario.split('\n');
    		const maxLength = Math.max(currentLines.length, customLines.length);
    		const newCurrentGraphData = [];
    		const newCustomScenario = [];

    		for (let i = 0; i < maxLength; i++) {
    			newCurrentGraphData.push(currentLines[i] || '');
    			newCustomScenario.push(customLines[i] || '');
    		}

    		$$invalidate(8, currentGraphData = newCurrentGraphData.join('\n'));
    		$$invalidate(7, customScenario = newCustomScenario.join('\n'));
    	};

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1$1.warn(`<GraphEditLoadTool> was created with unknown prop '${key}'`);
    	});

    	function div0_binding($$value) {
    		binding_callbacks[$$value ? 'unshift' : 'push'](() => {
    			container = $$value;
    			$$invalidate(0, container);
    		});
    	}

    	function input0_input_handler() {
    		updatedLabel = this.value;
    		$$invalidate(1, updatedLabel);
    	}

    	function input1_input_handler() {
    		updatedType = this.value;
    		$$invalidate(2, updatedType);
    	}

    	function input2_input_handler() {
    		numberOfNodesToAdd = to_number(this.value);
    		$$invalidate(3, numberOfNodesToAdd);
    	}

    	function select_change_handler() {
    		sourceNodeId = select_value(this);
    		$$invalidate(4, sourceNodeId);
    	}

    	function select_change_handler_1() {
    		targetNodeId = select_value(this);
    		$$invalidate(5, targetNodeId);
    	}

    	function select_change_handler_2() {
    		selectedEdge = select_value(this);
    		$$invalidate(6, selectedEdge);
    	}

    	function textarea0_input_handler() {
    		currentGraphData = this.value;
    		$$invalidate(8, currentGraphData);
    	}

    	function textarea1_input_handler() {
    		customScenario = this.value;
    		$$invalidate(7, customScenario);
    	}

    	$$self.$capture_state = () => ({
    		onMount,
    		onDestroy,
    		cytoscape,
    		yaml: jsYaml,
    		writable,
    		cy,
    		container,
    		selectedNodeData,
    		updatedLabel,
    		updatedType,
    		numberOfNodesToAdd,
    		sourceNodeId,
    		targetNodeId,
    		selectedEdge,
    		customScenario,
    		currentGraphData,
    		cyReady,
    		nodeIds,
    		edgeIds,
    		dummyData,
    		createGraphElements,
    		initializeScenario,
    		loadFromInputArea,
    		loadFromGraphData,
    		handleUpdate,
    		handleDelete,
    		handleAddNodes,
    		handleAddNodeWithoutEdges,
    		handleAddEdge,
    		handleDeleteEdge,
    		updateNodeAndEdgeIds,
    		spaceOutNodes,
    		fitGraph,
    		addEmptyLines,
    		$selectedNodeData,
    		$cyReady,
    		$nodeIds,
    		$edgeIds
    	});

    	$$self.$inject_state = $$props => {
    		if ('cy' in $$props) cy = $$props.cy;
    		if ('container' in $$props) $$invalidate(0, container = $$props.container);
    		if ('selectedNodeData' in $$props) $$invalidate(13, selectedNodeData = $$props.selectedNodeData);
    		if ('updatedLabel' in $$props) $$invalidate(1, updatedLabel = $$props.updatedLabel);
    		if ('updatedType' in $$props) $$invalidate(2, updatedType = $$props.updatedType);
    		if ('numberOfNodesToAdd' in $$props) $$invalidate(3, numberOfNodesToAdd = $$props.numberOfNodesToAdd);
    		if ('sourceNodeId' in $$props) $$invalidate(4, sourceNodeId = $$props.sourceNodeId);
    		if ('targetNodeId' in $$props) $$invalidate(5, targetNodeId = $$props.targetNodeId);
    		if ('selectedEdge' in $$props) $$invalidate(6, selectedEdge = $$props.selectedEdge);
    		if ('customScenario' in $$props) $$invalidate(7, customScenario = $$props.customScenario);
    		if ('currentGraphData' in $$props) $$invalidate(8, currentGraphData = $$props.currentGraphData);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		container,
    		updatedLabel,
    		updatedType,
    		numberOfNodesToAdd,
    		sourceNodeId,
    		targetNodeId,
    		selectedEdge,
    		customScenario,
    		currentGraphData,
    		$selectedNodeData,
    		$cyReady,
    		$nodeIds,
    		$edgeIds,
    		selectedNodeData,
    		cyReady,
    		nodeIds,
    		edgeIds,
    		initializeScenario,
    		loadFromInputArea,
    		loadFromGraphData,
    		handleUpdate,
    		handleDelete,
    		handleAddNodes,
    		handleAddNodeWithoutEdges,
    		handleAddEdge,
    		handleDeleteEdge,
    		spaceOutNodes,
    		fitGraph,
    		addEmptyLines,
    		div0_binding,
    		input0_input_handler,
    		input1_input_handler,
    		input2_input_handler,
    		select_change_handler,
    		select_change_handler_1,
    		select_change_handler_2,
    		textarea0_input_handler,
    		textarea1_input_handler
    	];
    }

    class GraphEditLoadTool extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$2, create_fragment$2, safe_not_equal, {}, null, [-1, -1]);

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "GraphEditLoadTool",
    			options,
    			id: create_fragment$2.name
    		});
    	}
    }

    /* src\SentenceOrderPracticeandState.svelte generated by Svelte v3.59.2 */

    const { console: console_1 } = globals;
    const file$1 = "src\\SentenceOrderPracticeandState.svelte";

    function get_each_context(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[27] = list[i];
    	child_ctx[28] = list;
    	child_ctx[29] = i;
    	return child_ctx;
    }

    function get_each_context_1(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[30] = list[i];
    	child_ctx[31] = list;
    	child_ctx[32] = i;
    	return child_ctx;
    }

    function get_each_context_2(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[33] = list[i];
    	return child_ctx;
    }

    function get_each_context_3(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[30] = list[i];
    	child_ctx[36] = list;
    	child_ctx[32] = i;
    	return child_ctx;
    }

    function get_each_context_4(ctx, list, i) {
    	const child_ctx = ctx.slice();
    	child_ctx[33] = list[i];
    	return child_ctx;
    }

    // (220:12) {#each currentrandomiseditems.wordforwordtranslationNodes[cardIndex] as option}
    function create_each_block_4(ctx) {
    	let option;
    	let t_value = /*option*/ ctx[33] + "";
    	let t;
    	let option_value_value;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = option_value_value = /*option*/ ctx[33];
    			option.value = option.__value;
    			add_location(option, file$1, 220, 14, 7331);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*currentrandomiseditems*/ 2 && t_value !== (t_value = /*option*/ ctx[33] + "")) set_data_dev(t, t_value);

    			if (dirty[0] & /*currentrandomiseditems*/ 2 && option_value_value !== (option_value_value = /*option*/ ctx[33])) {
    				prop_dev(option, "__value", option_value_value);
    				option.value = option.__value;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_4.name,
    		type: "each",
    		source: "(220:12) {#each currentrandomiseditems.wordforwordtranslationNodes[cardIndex] as option}",
    		ctx
    	});

    	return block;
    }

    // (217:8) {#each currentrandomiseditems.wordforwordtranslationNodes[cardIndex] as word, index}
    function create_each_block_3(ctx) {
    	let select;
    	let option;
    	let mounted;
    	let dispose;
    	let each_value_4 = /*currentrandomiseditems*/ ctx[1].wordforwordtranslationNodes[/*cardIndex*/ ctx[29]];
    	validate_each_argument(each_value_4);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_4.length; i += 1) {
    		each_blocks[i] = create_each_block_4(get_each_context_4(ctx, each_value_4, i));
    	}

    	function select_change_handler() {
    		/*select_change_handler*/ ctx[14].call(select, /*cardIndex*/ ctx[29], /*index*/ ctx[32]);
    	}

    	const block = {
    		c: function create() {
    			select = element$1("select");
    			option = element$1("option");
    			option.textContent = "Select...";

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			option.__value = "";
    			option.value = option.__value;
    			option.disabled = true;
    			option.selected = true;
    			add_location(option, file$1, 218, 12, 7169);
    			if (/*userPairs*/ ctx[3][/*cardIndex*/ ctx[29]][/*index*/ ctx[32]] === void 0) add_render_callback(select_change_handler);
    			add_location(select, file$1, 217, 10, 7106);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, select, anchor);
    			append_dev(select, option);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(select, null);
    				}
    			}

    			select_option(select, /*userPairs*/ ctx[3][/*cardIndex*/ ctx[29]][/*index*/ ctx[32]], true);

    			if (!mounted) {
    				dispose = listen_dev(select, "change", select_change_handler);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;

    			if (dirty[0] & /*currentrandomiseditems*/ 2) {
    				each_value_4 = /*currentrandomiseditems*/ ctx[1].wordforwordtranslationNodes[/*cardIndex*/ ctx[29]];
    				validate_each_argument(each_value_4);
    				let i;

    				for (i = 0; i < each_value_4.length; i += 1) {
    					const child_ctx = get_each_context_4(ctx, each_value_4, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_4(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(select, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_4.length;
    			}

    			if (dirty[0] & /*userPairs, currentrandomiseditems*/ 10) {
    				select_option(select, /*userPairs*/ ctx[3][/*cardIndex*/ ctx[29]][/*index*/ ctx[32]]);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(select);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_3.name,
    		type: "each",
    		source: "(217:8) {#each currentrandomiseditems.wordforwordtranslationNodes[cardIndex] as word, index}",
    		ctx
    	});

    	return block;
    }

    // (232:12) {#each currentrandomiseditems.naturaltranslationNodes[cardIndex] as option}
    function create_each_block_2(ctx) {
    	let option;
    	let t_value = /*option*/ ctx[33] + "";
    	let t;
    	let option_value_value;

    	const block = {
    		c: function create() {
    			option = element$1("option");
    			t = text(t_value);
    			option.__value = option_value_value = /*option*/ ctx[33];
    			option.value = option.__value;
    			add_location(option, file$1, 232, 14, 7933);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, option, anchor);
    			append_dev(option, t);
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*currentrandomiseditems*/ 2 && t_value !== (t_value = /*option*/ ctx[33] + "")) set_data_dev(t, t_value);

    			if (dirty[0] & /*currentrandomiseditems*/ 2 && option_value_value !== (option_value_value = /*option*/ ctx[33])) {
    				prop_dev(option, "__value", option_value_value);
    				option.value = option.__value;
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(option);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_2.name,
    		type: "each",
    		source: "(232:12) {#each currentrandomiseditems.naturaltranslationNodes[cardIndex] as option}",
    		ctx
    	});

    	return block;
    }

    // (229:8) {#each currentrandomiseditems.naturaltranslationNodes[cardIndex] as word, index}
    function create_each_block_1(ctx) {
    	let select;
    	let option;
    	let mounted;
    	let dispose;
    	let each_value_2 = /*currentrandomiseditems*/ ctx[1].naturaltranslationNodes[/*cardIndex*/ ctx[29]];
    	validate_each_argument(each_value_2);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_2.length; i += 1) {
    		each_blocks[i] = create_each_block_2(get_each_context_2(ctx, each_value_2, i));
    	}

    	function select_change_handler_1() {
    		/*select_change_handler_1*/ ctx[16].call(select, /*cardIndex*/ ctx[29], /*index*/ ctx[32]);
    	}

    	const block = {
    		c: function create() {
    			select = element$1("select");
    			option = element$1("option");
    			option.textContent = "Select...";

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			option.__value = "";
    			option.value = option.__value;
    			option.disabled = true;
    			option.selected = true;
    			add_location(option, file$1, 230, 12, 7775);
    			if (/*userOrders*/ ctx[2][/*cardIndex*/ ctx[29]][/*index*/ ctx[32]] === void 0) add_render_callback(select_change_handler_1);
    			add_location(select, file$1, 229, 10, 7711);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, select, anchor);
    			append_dev(select, option);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(select, null);
    				}
    			}

    			select_option(select, /*userOrders*/ ctx[2][/*cardIndex*/ ctx[29]][/*index*/ ctx[32]], true);

    			if (!mounted) {
    				dispose = listen_dev(select, "change", select_change_handler_1);
    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;

    			if (dirty[0] & /*currentrandomiseditems*/ 2) {
    				each_value_2 = /*currentrandomiseditems*/ ctx[1].naturaltranslationNodes[/*cardIndex*/ ctx[29]];
    				validate_each_argument(each_value_2);
    				let i;

    				for (i = 0; i < each_value_2.length; i += 1) {
    					const child_ctx = get_each_context_2(ctx, each_value_2, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_2(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(select, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_2.length;
    			}

    			if (dirty[0] & /*userOrders, currentrandomiseditems*/ 6) {
    				select_option(select, /*userOrders*/ ctx[2][/*cardIndex*/ ctx[29]][/*index*/ ctx[32]]);
    			}
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(select);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			dispose();
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block_1.name,
    		type: "each",
    		source: "(229:8) {#each currentrandomiseditems.naturaltranslationNodes[cardIndex] as word, index}",
    		ctx
    	});

    	return block;
    }

    // (209:2) {#each cards as card, cardIndex}
    function create_each_block(ctx) {
    	let div2;
    	let h3;
    	let t0;
    	let t1_value = /*cardIndex*/ ctx[29] + 1 + "";
    	let t1;
    	let t2;
    	let p0;
    	let t3;
    	let t4_value = /*card*/ ctx[27].hint + "";
    	let t4;
    	let t5;
    	let h40;
    	let t7;
    	let p1;
    	let t8_value = /*card*/ ctx[27].nodes.join(" ") + "";
    	let t8;
    	let t9;
    	let h41;
    	let t11;
    	let div0;
    	let t12;
    	let button0;
    	let t13;
    	let button0_disabled_value;
    	let t14;
    	let h42;
    	let t16;
    	let div1;
    	let t17;
    	let button1;
    	let t18;
    	let button1_disabled_value;
    	let t19;
    	let p2;
    	let t20;
    	let t21_value = /*feedbacks*/ ctx[4][/*cardIndex*/ ctx[29]] + "";
    	let t21;
    	let t22;
    	let mounted;
    	let dispose;
    	let each_value_3 = /*currentrandomiseditems*/ ctx[1].wordforwordtranslationNodes[/*cardIndex*/ ctx[29]];
    	validate_each_argument(each_value_3);
    	let each_blocks_1 = [];

    	for (let i = 0; i < each_value_3.length; i += 1) {
    		each_blocks_1[i] = create_each_block_3(get_each_context_3(ctx, each_value_3, i));
    	}

    	function click_handler() {
    		return /*click_handler*/ ctx[15](/*cardIndex*/ ctx[29]);
    	}

    	let each_value_1 = /*currentrandomiseditems*/ ctx[1].naturaltranslationNodes[/*cardIndex*/ ctx[29]];
    	validate_each_argument(each_value_1);
    	let each_blocks = [];

    	for (let i = 0; i < each_value_1.length; i += 1) {
    		each_blocks[i] = create_each_block_1(get_each_context_1(ctx, each_value_1, i));
    	}

    	function click_handler_1() {
    		return /*click_handler_1*/ ctx[17](/*cardIndex*/ ctx[29]);
    	}

    	const block = {
    		c: function create() {
    			div2 = element$1("div");
    			h3 = element$1("h3");
    			t0 = text("Sentence ");
    			t1 = text(t1_value);
    			t2 = space();
    			p0 = element$1("p");
    			t3 = text("Hint: ");
    			t4 = text(t4_value);
    			t5 = space();
    			h40 = element$1("h4");
    			h40.textContent = "Original sentence";
    			t7 = space();
    			p1 = element$1("p");
    			t8 = text(t8_value);
    			t9 = space();
    			h41 = element$1("h4");
    			h41.textContent = "Word-for-word translation";
    			t11 = space();
    			div0 = element$1("div");

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				each_blocks_1[i].c();
    			}

    			t12 = space();
    			button0 = element$1("button");
    			t13 = text("Check Pairs");
    			t14 = space();
    			h42 = element$1("h4");
    			h42.textContent = "Natural translation";
    			t16 = space();
    			div1 = element$1("div");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t17 = space();
    			button1 = element$1("button");
    			t18 = text("Check Order");
    			t19 = space();
    			p2 = element$1("p");
    			t20 = text("Feedback: ");
    			t21 = text(t21_value);
    			t22 = space();
    			add_location(h3, file$1, 210, 6, 6809);
    			add_location(p0, file$1, 211, 6, 6850);
    			add_location(h40, file$1, 212, 6, 6882);
    			add_location(p1, file$1, 213, 6, 6916);
    			add_location(h41, file$1, 214, 6, 6953);
    			add_location(div0, file$1, 215, 6, 6995);
    			button0.disabled = button0_disabled_value = /*correctPairsStatus*/ ctx[5][/*cardIndex*/ ctx[29]];
    			attr_dev(button0, "class", "svelte-a8xq0d");
    			add_location(button0, file$1, 225, 6, 7452);
    			add_location(h42, file$1, 226, 6, 7568);
    			add_location(div1, file$1, 227, 6, 7604);
    			button1.disabled = button1_disabled_value = /*correctOrderStatus*/ ctx[6][/*cardIndex*/ ctx[29]];
    			attr_dev(button1, "class", "svelte-a8xq0d");
    			add_location(button1, file$1, 237, 6, 8054);
    			add_location(p2, file$1, 238, 6, 8170);
    			attr_dev(div2, "class", "card svelte-a8xq0d");
    			add_location(div2, file$1, 209, 4, 6783);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div2, anchor);
    			append_dev(div2, h3);
    			append_dev(h3, t0);
    			append_dev(h3, t1);
    			append_dev(div2, t2);
    			append_dev(div2, p0);
    			append_dev(p0, t3);
    			append_dev(p0, t4);
    			append_dev(div2, t5);
    			append_dev(div2, h40);
    			append_dev(div2, t7);
    			append_dev(div2, p1);
    			append_dev(p1, t8);
    			append_dev(div2, t9);
    			append_dev(div2, h41);
    			append_dev(div2, t11);
    			append_dev(div2, div0);

    			for (let i = 0; i < each_blocks_1.length; i += 1) {
    				if (each_blocks_1[i]) {
    					each_blocks_1[i].m(div0, null);
    				}
    			}

    			append_dev(div2, t12);
    			append_dev(div2, button0);
    			append_dev(button0, t13);
    			append_dev(div2, t14);
    			append_dev(div2, h42);
    			append_dev(div2, t16);
    			append_dev(div2, div1);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div1, null);
    				}
    			}

    			append_dev(div2, t17);
    			append_dev(div2, button1);
    			append_dev(button1, t18);
    			append_dev(div2, t19);
    			append_dev(div2, p2);
    			append_dev(p2, t20);
    			append_dev(p2, t21);
    			append_dev(div2, t22);

    			if (!mounted) {
    				dispose = [
    					listen_dev(button0, "click", click_handler, false, false, false, false),
    					listen_dev(button1, "click", click_handler_1, false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(new_ctx, dirty) {
    			ctx = new_ctx;
    			if (dirty[0] & /*cards*/ 1 && t4_value !== (t4_value = /*card*/ ctx[27].hint + "")) set_data_dev(t4, t4_value);
    			if (dirty[0] & /*cards*/ 1 && t8_value !== (t8_value = /*card*/ ctx[27].nodes.join(" ") + "")) set_data_dev(t8, t8_value);

    			if (dirty[0] & /*userPairs, currentrandomiseditems*/ 10) {
    				each_value_3 = /*currentrandomiseditems*/ ctx[1].wordforwordtranslationNodes[/*cardIndex*/ ctx[29]];
    				validate_each_argument(each_value_3);
    				let i;

    				for (i = 0; i < each_value_3.length; i += 1) {
    					const child_ctx = get_each_context_3(ctx, each_value_3, i);

    					if (each_blocks_1[i]) {
    						each_blocks_1[i].p(child_ctx, dirty);
    					} else {
    						each_blocks_1[i] = create_each_block_3(child_ctx);
    						each_blocks_1[i].c();
    						each_blocks_1[i].m(div0, null);
    					}
    				}

    				for (; i < each_blocks_1.length; i += 1) {
    					each_blocks_1[i].d(1);
    				}

    				each_blocks_1.length = each_value_3.length;
    			}

    			if (dirty[0] & /*correctPairsStatus*/ 32 && button0_disabled_value !== (button0_disabled_value = /*correctPairsStatus*/ ctx[5][/*cardIndex*/ ctx[29]])) {
    				prop_dev(button0, "disabled", button0_disabled_value);
    			}

    			if (dirty[0] & /*userOrders, currentrandomiseditems*/ 6) {
    				each_value_1 = /*currentrandomiseditems*/ ctx[1].naturaltranslationNodes[/*cardIndex*/ ctx[29]];
    				validate_each_argument(each_value_1);
    				let i;

    				for (i = 0; i < each_value_1.length; i += 1) {
    					const child_ctx = get_each_context_1(ctx, each_value_1, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block_1(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(div1, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value_1.length;
    			}

    			if (dirty[0] & /*correctOrderStatus*/ 64 && button1_disabled_value !== (button1_disabled_value = /*correctOrderStatus*/ ctx[6][/*cardIndex*/ ctx[29]])) {
    				prop_dev(button1, "disabled", button1_disabled_value);
    			}

    			if (dirty[0] & /*feedbacks*/ 16 && t21_value !== (t21_value = /*feedbacks*/ ctx[4][/*cardIndex*/ ctx[29]] + "")) set_data_dev(t21, t21_value);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div2);
    			destroy_each(each_blocks_1, detaching);
    			destroy_each(each_blocks, detaching);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_each_block.name,
    		type: "each",
    		source: "(209:2) {#each cards as card, cardIndex}",
    		ctx
    	});

    	return block;
    }

    // (244:0) {#if allCorrect}
    function create_if_block(ctx) {
    	let p;

    	const block = {
    		c: function create() {
    			p = element$1("p");
    			p.textContent = "Congratulations! You have correctly completed all sentences.";
    			add_location(p, file$1, 244, 2, 8264);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, p, anchor);
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(p);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_if_block.name,
    		type: "if",
    		source: "(244:0) {#if allCorrect}",
    		ctx
    	});

    	return block;
    }

    function create_fragment$1(ctx) {
    	let div0;
    	let p;
    	let t0;
    	let t1_value = /*correctPairsCount*/ ctx[7] + /*correctOrderCount*/ ctx[8] + "";
    	let t1;
    	let t2;
    	let t3_value = /*cards*/ ctx[0].length * 2 + "";
    	let t3;
    	let t4;
    	let div1;
    	let button;
    	let t6;
    	let input;
    	let t7;
    	let div2;
    	let t8;
    	let t9;
    	let mounted;
    	let dispose;
    	let each_value = /*cards*/ ctx[0];
    	validate_each_argument(each_value);
    	let each_blocks = [];

    	for (let i = 0; i < each_value.length; i += 1) {
    		each_blocks[i] = create_each_block(get_each_context(ctx, each_value, i));
    	}

    	let if_block = /*allCorrect*/ ctx[9] && create_if_block(ctx);

    	const block = {
    		c: function create() {
    			div0 = element$1("div");
    			p = element$1("p");
    			t0 = text("Correct items: ");
    			t1 = text(t1_value);
    			t2 = text(" / ");
    			t3 = text(t3_value);
    			t4 = space();
    			div1 = element$1("div");
    			button = element$1("button");
    			button.textContent = "Save Cards";
    			t6 = space();
    			input = element$1("input");
    			t7 = space();
    			div2 = element$1("div");

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				each_blocks[i].c();
    			}

    			t8 = space();
    			if (if_block) if_block.c();
    			t9 = text("\r\n\r\n\r\n  \r\nThis is the prototype for learning knowledge - sentence word to glosaary definition matching = word for word matching --- infered meaning / critcal reading interpretations / relative meaning ? = natural translation  \r\n\r\nAudio Repitition Creation tool options - Kaggle script?");
    			add_location(p, file$1, 199, 2, 6493);
    			add_location(div0, file$1, 198, 0, 6484);
    			attr_dev(button, "class", "svelte-a8xq0d");
    			add_location(button, file$1, 203, 2, 6596);
    			attr_dev(input, "type", "file");
    			attr_dev(input, "accept", ".txt");
    			add_location(input, file$1, 204, 2, 6648);
    			add_location(div1, file$1, 202, 0, 6587);
    			attr_dev(div2, "class", "scrollable svelte-a8xq0d");
    			add_location(div2, file$1, 207, 0, 6717);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, div0, anchor);
    			append_dev(div0, p);
    			append_dev(p, t0);
    			append_dev(p, t1);
    			append_dev(p, t2);
    			append_dev(p, t3);
    			insert_dev(target, t4, anchor);
    			insert_dev(target, div1, anchor);
    			append_dev(div1, button);
    			append_dev(div1, t6);
    			append_dev(div1, input);
    			insert_dev(target, t7, anchor);
    			insert_dev(target, div2, anchor);

    			for (let i = 0; i < each_blocks.length; i += 1) {
    				if (each_blocks[i]) {
    					each_blocks[i].m(div2, null);
    				}
    			}

    			insert_dev(target, t8, anchor);
    			if (if_block) if_block.m(target, anchor);
    			insert_dev(target, t9, anchor);

    			if (!mounted) {
    				dispose = [
    					listen_dev(button, "click", /*saveCards*/ ctx[12], false, false, false, false),
    					listen_dev(input, "change", /*loadCards*/ ctx[13], false, false, false, false)
    				];

    				mounted = true;
    			}
    		},
    		p: function update(ctx, dirty) {
    			if (dirty[0] & /*correctPairsCount, correctOrderCount*/ 384 && t1_value !== (t1_value = /*correctPairsCount*/ ctx[7] + /*correctOrderCount*/ ctx[8] + "")) set_data_dev(t1, t1_value);
    			if (dirty[0] & /*cards*/ 1 && t3_value !== (t3_value = /*cards*/ ctx[0].length * 2 + "")) set_data_dev(t3, t3_value);

    			if (dirty[0] & /*feedbacks, correctOrderStatus, checkOrder, currentrandomiseditems, userOrders, correctPairsStatus, checkPairs, userPairs, cards*/ 3199) {
    				each_value = /*cards*/ ctx[0];
    				validate_each_argument(each_value);
    				let i;

    				for (i = 0; i < each_value.length; i += 1) {
    					const child_ctx = get_each_context(ctx, each_value, i);

    					if (each_blocks[i]) {
    						each_blocks[i].p(child_ctx, dirty);
    					} else {
    						each_blocks[i] = create_each_block(child_ctx);
    						each_blocks[i].c();
    						each_blocks[i].m(div2, null);
    					}
    				}

    				for (; i < each_blocks.length; i += 1) {
    					each_blocks[i].d(1);
    				}

    				each_blocks.length = each_value.length;
    			}

    			if (/*allCorrect*/ ctx[9]) {
    				if (if_block) ; else {
    					if_block = create_if_block(ctx);
    					if_block.c();
    					if_block.m(t9.parentNode, t9);
    				}
    			} else if (if_block) {
    				if_block.d(1);
    				if_block = null;
    			}
    		},
    		i: noop$2,
    		o: noop$2,
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(div0);
    			if (detaching) detach_dev(t4);
    			if (detaching) detach_dev(div1);
    			if (detaching) detach_dev(t7);
    			if (detaching) detach_dev(div2);
    			destroy_each(each_blocks, detaching);
    			if (detaching) detach_dev(t8);
    			if (if_block) if_block.d(detaching);
    			if (detaching) detach_dev(t9);
    			mounted = false;
    			run_all(dispose);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment$1.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function scrambleArray(array) {
    	let scrambled = array.slice();

    	for (let i = scrambled.length - 1; i > 0; i--) {
    		const j = Math.floor(Math.random() * (i + 1));
    		[scrambled[i], scrambled[j]] = [scrambled[j], scrambled[i]];
    	}

    	return scrambled;
    }

    function instance$1($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('SentenceOrderPracticeandState', slots, []);

    	let cards = [
    		{
    			nodes: ["Where", "am", "I", "going", "next?"],
    			wordforwordtranslationNodes: ["¿Adónde", "voy", "yo", "próximo?", "a"],
    			naturaltranslationNodes: ["¿Adónde", "voy", "después?"],
    			hint: "SVO -> SVO (Spanish)",
    			stats: {
    				attempts: 0,
    				correctPairs: 0,
    				correctOrders: 0
    			}
    		},
    		{
    			nodes: ["What", "is", "your", "name?"],
    			wordforwordtranslationNodes: ["¿Cuál", "es", "tu", "nombre?"],
    			naturaltranslationNodes: ["¿Cómo", "te", "llamas?"],
    			hint: "SVO -> SVO (Spanish)",
    			stats: {
    				attempts: 0,
    				correctPairs: 0,
    				correctOrders: 0
    			}
    		},
    		{
    			nodes: ["I", "am", "learning", "Svelte."],
    			wordforwordtranslationNodes: ["Yo", "estoy", "aprendiendo", "Svelte."],
    			naturaltranslationNodes: ["Estoy", "aprendiendo", "Svelte."],
    			hint: "SVO -> SVO (Spanish)",
    			stats: {
    				attempts: 0,
    				correctPairs: 0,
    				correctOrders: 0
    			}
    		},
    		{
    			nodes: ["How", "are", "you", "today?"],
    			wordforwordtranslationNodes: ["¿Cómo", "estás", "tú", "hoy?"],
    			naturaltranslationNodes: ["¿Cómo", "estás", "hoy?"],
    			hint: "SVO -> SVO (Spanish)",
    			stats: {
    				attempts: 0,
    				correctPairs: 0,
    				correctOrders: 0
    			}
    		},
    		{
    			nodes: ["The", "weather", "is", "nice", "today."],
    			wordforwordtranslationNodes: ["El", "tiempo", "está", "agradable", "hoy."],
    			naturaltranslationNodes: ["El", "clima", "está", "agradable", "hoy."],
    			hint: "SVO -> SVO (Spanish)",
    			stats: {
    				attempts: 0,
    				correctPairs: 0,
    				correctOrders: 0
    			}
    		},
    		{
    			nodes: ["Let's", "go", "to", "the", "park."],
    			wordforwordtranslationNodes: ["Vamos", "al", "parque."],
    			naturaltranslationNodes: ["Vamos", "al", "parque."],
    			hint: "SVO -> SVO (Spanish)",
    			stats: {
    				attempts: 0,
    				correctPairs: 0,
    				correctOrders: 0
    			}
    		}
    	];

    	let currentrandomiseditems = {
    		wordforwordtranslationNodes: Array(cards.length).fill([]).map(() => []),
    		naturaltranslationNodes: Array(cards.length).fill([]).map(() => [])
    	};

    	let userOrders = Array(cards.length).fill([]).map(() => []);
    	let userPairs = Array(cards.length).fill([]).map(() => []);
    	let feedbacks = Array(cards.length).fill("");
    	let orderFeedbacks = Array(cards.length).fill([]).map(() => []);
    	let pairFeedbacks = Array(cards.length).fill([]).map(() => []);
    	let correctPairsStatus = Array(cards.length).fill(false);
    	let correctOrderStatus = Array(cards.length).fill(false);

    	// Stat tracking variables
    	let totalAttempts = 0;

    	let correctPairsCount = 0;
    	let correctOrderCount = 0;

    	// Timer variables
    	let timer = 0;

    	let timerInterval;
    	let timerActive = false;

    	// Correct status
    	let allCorrect = false;

    	onMount(() => {
    		cards.forEach((card, index) => {
    			$$invalidate(1, currentrandomiseditems.wordforwordtranslationNodes[index] = scrambleArray(card.wordforwordtranslationNodes), currentrandomiseditems);
    			$$invalidate(1, currentrandomiseditems.naturaltranslationNodes[index] = scrambleArray(card.naturaltranslationNodes), currentrandomiseditems);
    		});
    	});

    	function startTimer() {
    		timerActive = true;

    		timerInterval = setInterval(
    			() => {
    				timer++;
    			},
    			1000
    		);
    	}

    	function stopTimer() {
    		timerActive = false;
    		clearInterval(timerInterval);
    	}

    	function checkOrder(cardIndex) {
    		if (correctOrderStatus[cardIndex]) return;
    		totalAttempts++;
    		$$invalidate(0, cards[cardIndex].stats.attempts++, cards);

    		if (JSON.stringify(userOrders[cardIndex]) === JSON.stringify(cards[cardIndex].naturaltranslationNodes)) {
    			$$invalidate(8, correctOrderCount++, correctOrderCount);
    			$$invalidate(0, cards[cardIndex].stats.correctOrders++, cards);
    			$$invalidate(4, feedbacks[cardIndex] = "Correct!", feedbacks);
    			$$invalidate(6, correctOrderStatus[cardIndex] = true, correctOrderStatus);
    		} else {
    			$$invalidate(4, feedbacks[cardIndex] = "Try again!", feedbacks);
    		}

    		checkAllCorrect();
    	}

    	function checkPairs(cardIndex) {
    		if (correctPairsStatus[cardIndex]) return;
    		totalAttempts++;
    		$$invalidate(0, cards[cardIndex].stats.attempts++, cards);
    		let correctPairs = 0;

    		userPairs[cardIndex].forEach((pair, index) => {
    			if (pair === cards[cardIndex].wordforwordtranslationNodes[index]) {
    				correctPairs++;
    			}
    		});

    		if (correctPairs === cards[cardIndex].wordforwordtranslationNodes.length) {
    			$$invalidate(7, correctPairsCount++, correctPairsCount);
    			$$invalidate(0, cards[cardIndex].stats.correctPairs++, cards);
    			$$invalidate(4, feedbacks[cardIndex] = "All pairs are correct!", feedbacks);
    			$$invalidate(5, correctPairsStatus[cardIndex] = true, correctPairsStatus);
    		} else {
    			$$invalidate(4, feedbacks[cardIndex] = `${correctPairs} pairs are correct.`, feedbacks);
    		}

    		checkAllCorrect();
    	}

    	function checkAllCorrect() {
    		$$invalidate(9, allCorrect = cards.every((card, index) => correctOrderStatus[index] && correctPairsStatus[index]));

    		if (allCorrect) {
    			// Reset statuses for next pass
    			correctOrderStatus.fill(false);

    			correctPairsStatus.fill(false);
    		}
    	}

    	function saveCards() {
    		const blob = new Blob([JSON.stringify(cards, null, 2)], { type: 'text/plain' });
    		const url = URL.createObjectURL(blob);
    		const a = document.createElement('a');
    		a.href = url;
    		a.download = 'cards.txt';
    		a.click();
    		URL.revokeObjectURL(url);
    	}

    	function loadCards(event) {
    		const file = event.target.files[0];

    		if (file) {
    			const reader = new FileReader();

    			reader.onload = () => {
    				try {
    					$$invalidate(0, cards = JSON.parse(reader.result));

    					cards.forEach((card, index) => {
    						$$invalidate(1, currentrandomiseditems.wordforwordtranslationNodes[index] = scrambleArray(card.wordforwordtranslationNodes), currentrandomiseditems);
    						$$invalidate(1, currentrandomiseditems.naturaltranslationNodes[index] = scrambleArray(card.naturaltranslationNodes), currentrandomiseditems);
    					});
    				} catch(error) {
    					console.error("Failed to load cards:", error);
    				}
    			};

    			reader.readAsText(file);
    		}
    	}

    	const writable_props = [];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console_1.warn(`<SentenceOrderPracticeandState> was created with unknown prop '${key}'`);
    	});

    	function select_change_handler(cardIndex, index) {
    		userPairs[cardIndex][index] = select_value(this);
    		$$invalidate(3, userPairs);
    		$$invalidate(1, currentrandomiseditems);
    	}

    	const click_handler = cardIndex => checkPairs(cardIndex);

    	function select_change_handler_1(cardIndex, index) {
    		userOrders[cardIndex][index] = select_value(this);
    		$$invalidate(2, userOrders);
    		$$invalidate(1, currentrandomiseditems);
    	}

    	const click_handler_1 = cardIndex => checkOrder(cardIndex);

    	$$self.$capture_state = () => ({
    		onMount,
    		cards,
    		currentrandomiseditems,
    		userOrders,
    		userPairs,
    		feedbacks,
    		orderFeedbacks,
    		pairFeedbacks,
    		correctPairsStatus,
    		correctOrderStatus,
    		totalAttempts,
    		correctPairsCount,
    		correctOrderCount,
    		timer,
    		timerInterval,
    		timerActive,
    		allCorrect,
    		scrambleArray,
    		startTimer,
    		stopTimer,
    		checkOrder,
    		checkPairs,
    		checkAllCorrect,
    		saveCards,
    		loadCards
    	});

    	$$self.$inject_state = $$props => {
    		if ('cards' in $$props) $$invalidate(0, cards = $$props.cards);
    		if ('currentrandomiseditems' in $$props) $$invalidate(1, currentrandomiseditems = $$props.currentrandomiseditems);
    		if ('userOrders' in $$props) $$invalidate(2, userOrders = $$props.userOrders);
    		if ('userPairs' in $$props) $$invalidate(3, userPairs = $$props.userPairs);
    		if ('feedbacks' in $$props) $$invalidate(4, feedbacks = $$props.feedbacks);
    		if ('orderFeedbacks' in $$props) orderFeedbacks = $$props.orderFeedbacks;
    		if ('pairFeedbacks' in $$props) pairFeedbacks = $$props.pairFeedbacks;
    		if ('correctPairsStatus' in $$props) $$invalidate(5, correctPairsStatus = $$props.correctPairsStatus);
    		if ('correctOrderStatus' in $$props) $$invalidate(6, correctOrderStatus = $$props.correctOrderStatus);
    		if ('totalAttempts' in $$props) totalAttempts = $$props.totalAttempts;
    		if ('correctPairsCount' in $$props) $$invalidate(7, correctPairsCount = $$props.correctPairsCount);
    		if ('correctOrderCount' in $$props) $$invalidate(8, correctOrderCount = $$props.correctOrderCount);
    		if ('timer' in $$props) timer = $$props.timer;
    		if ('timerInterval' in $$props) timerInterval = $$props.timerInterval;
    		if ('timerActive' in $$props) timerActive = $$props.timerActive;
    		if ('allCorrect' in $$props) $$invalidate(9, allCorrect = $$props.allCorrect);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [
    		cards,
    		currentrandomiseditems,
    		userOrders,
    		userPairs,
    		feedbacks,
    		correctPairsStatus,
    		correctOrderStatus,
    		correctPairsCount,
    		correctOrderCount,
    		allCorrect,
    		checkOrder,
    		checkPairs,
    		saveCards,
    		loadCards,
    		select_change_handler,
    		click_handler,
    		select_change_handler_1,
    		click_handler_1
    	];
    }

    class SentenceOrderPracticeandState extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance$1, create_fragment$1, safe_not_equal, {}, null, [-1, -1]);

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "SentenceOrderPracticeandState",
    			options,
    			id: create_fragment$1.name
    		});
    	}
    }

    /* src\App.svelte generated by Svelte v3.59.2 */
    const file = "src\\App.svelte";

    // (57:1) <SimpleCollapsible title='Sentence Order Practice'>
    function create_default_slot_5(ctx) {
    	let sentenceorderpracticeandstate;
    	let current;
    	sentenceorderpracticeandstate = new SentenceOrderPracticeandState({ $$inline: true });

    	const block = {
    		c: function create() {
    			create_component(sentenceorderpracticeandstate.$$.fragment);
    		},
    		m: function mount(target, anchor) {
    			mount_component(sentenceorderpracticeandstate, target, anchor);
    			current = true;
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(sentenceorderpracticeandstate.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(sentenceorderpracticeandstate.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			destroy_component(sentenceorderpracticeandstate, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_default_slot_5.name,
    		type: "slot",
    		source: "(57:1) <SimpleCollapsible title='Sentence Order Practice'>",
    		ctx
    	});

    	return block;
    }

    // (61:1) <SimpleCollapsible title='Random Text Idea Tests'>
    function create_default_slot_4(ctx) {
    	let h3;
    	let t1;
    	let div6;
    	let div0;
    	let copyremove;
    	let t2;
    	let div1;
    	let llmwf;
    	let t3;
    	let div2;
    	let subrepprac;
    	let t4;
    	let div3;
    	let readingstatecounter;
    	let t5;
    	let div4;
    	let t6;
    	let br;
    	let t7;
    	let orderaspractice;
    	let t8;
    	let div5;
    	let firstsyllable;
    	let current;
    	copyremove = new CopyandRemoveListComponent({ $$inline: true });
    	llmwf = new LLMWorkflowTest({ $$inline: true });
    	subrepprac = new DeliberateSubconciousRepititionPractice({ $$inline: true });
    	readingstatecounter = new ReadingStateCounter({ $$inline: true });
    	orderaspractice = new PSWSasspellingpractice({ $$inline: true });

    	firstsyllable = new ListeningPracticeandSyllableStudy({
    			props: { syllableLists: /*wordList*/ ctx[1] },
    			$$inline: true
    		});

    	const block = {
    		c: function create() {
    			h3 = element$1("h3");
    			h3.textContent = "(Through Gradio and Custom Components)";
    			t1 = space();
    			div6 = element$1("div");
    			div0 = element$1("div");
    			create_component(copyremove.$$.fragment);
    			t2 = space();
    			div1 = element$1("div");
    			create_component(llmwf.$$.fragment);
    			t3 = space();
    			div2 = element$1("div");
    			create_component(subrepprac.$$.fragment);
    			t4 = space();
    			div3 = element$1("div");
    			create_component(readingstatecounter.$$.fragment);
    			t5 = space();
    			div4 = element$1("div");
    			t6 = text("Works well with this prompt + gemini: (Please seperate the words into a list and have the roman and english in brackets next to each word:) ");
    			br = element$1("br");
    			t7 = text(" Current Practice flow plan User steps:  1) get lyrics (youtube/genius/whisper/other) 2) send to gemini with prompt 3)Enter into new component which starts with scramble spelling with dropdowns then scramble spelling using typing  then moves to  \n\t\t\t\t");
    			create_component(orderaspractice.$$.fragment);
    			t8 = space();
    			div5 = element$1("div");
    			create_component(firstsyllable.$$.fragment);
    			add_location(h3, file, 61, 2, 2760);
    			attr_dev(div0, "class", "componentborder svelte-192gzri");
    			add_location(div0, file, 64, 3, 2859);
    			attr_dev(div1, "class", "componentborder svelte-192gzri");
    			add_location(div1, file, 65, 3, 2912);
    			attr_dev(div2, "class", "componentborder svelte-192gzri");
    			add_location(div2, file, 66, 3, 2960);
    			attr_dev(div3, "class", "componentborder svelte-192gzri");
    			add_location(div3, file, 67, 3, 3013);
    			add_location(br, file, 69, 144, 3249);
    			attr_dev(div4, "class", "componentborder svelte-192gzri");
    			add_location(div4, file, 68, 3, 3075);
    			attr_dev(div5, "class", "componentborder svelte-192gzri");
    			add_location(div5, file, 72, 3, 3536);
    			attr_dev(div6, "class", "grid-MultiComponentContainer svelte-192gzri");
    			add_location(div6, file, 63, 2, 2813);
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, h3, anchor);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, div6, anchor);
    			append_dev(div6, div0);
    			mount_component(copyremove, div0, null);
    			append_dev(div6, t2);
    			append_dev(div6, div1);
    			mount_component(llmwf, div1, null);
    			append_dev(div6, t3);
    			append_dev(div6, div2);
    			mount_component(subrepprac, div2, null);
    			append_dev(div6, t4);
    			append_dev(div6, div3);
    			mount_component(readingstatecounter, div3, null);
    			append_dev(div6, t5);
    			append_dev(div6, div4);
    			append_dev(div4, t6);
    			append_dev(div4, br);
    			append_dev(div4, t7);
    			mount_component(orderaspractice, div4, null);
    			append_dev(div6, t8);
    			append_dev(div6, div5);
    			mount_component(firstsyllable, div5, null);
    			current = true;
    		},
    		p: noop$2,
    		i: function intro(local) {
    			if (current) return;
    			transition_in(copyremove.$$.fragment, local);
    			transition_in(llmwf.$$.fragment, local);
    			transition_in(subrepprac.$$.fragment, local);
    			transition_in(readingstatecounter.$$.fragment, local);
    			transition_in(orderaspractice.$$.fragment, local);
    			transition_in(firstsyllable.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(copyremove.$$.fragment, local);
    			transition_out(llmwf.$$.fragment, local);
    			transition_out(subrepprac.$$.fragment, local);
    			transition_out(readingstatecounter.$$.fragment, local);
    			transition_out(orderaspractice.$$.fragment, local);
    			transition_out(firstsyllable.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(h3);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(div6);
    			destroy_component(copyremove);
    			destroy_component(llmwf);
    			destroy_component(subrepprac);
    			destroy_component(readingstatecounter);
    			destroy_component(orderaspractice);
    			destroy_component(firstsyllable);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_default_slot_4.name,
    		type: "slot",
    		source: "(61:1) <SimpleCollapsible title='Random Text Idea Tests'>",
    		ctx
    	});

    	return block;
    }

    // (79:1) <SimpleCollapsible title='Nested Comments Idea'>
    function create_default_slot_3(ctx) {
    	let nestedcommentssvelte;
    	let current;
    	nestedcommentssvelte = new RecursiveNestedCommentsElement({ $$inline: true });

    	const block = {
    		c: function create() {
    			create_component(nestedcommentssvelte.$$.fragment);
    		},
    		m: function mount(target, anchor) {
    			mount_component(nestedcommentssvelte, target, anchor);
    			current = true;
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(nestedcommentssvelte.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(nestedcommentssvelte.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			destroy_component(nestedcommentssvelte, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_default_slot_3.name,
    		type: "slot",
    		source: "(79:1) <SimpleCollapsible title='Nested Comments Idea'>",
    		ctx
    	});

    	return block;
    }

    // (83:1) <SimpleCollapsible title='YT Player Idea'>
    function create_default_slot_2(ctx) {
    	let myyoutube;
    	let t;
    	let ytpicsubs;
    	let current;
    	myyoutube = new YoutubeIframeAPICustomInterface({ $$inline: true });
    	ytpicsubs = new PictureSubtitlesbasedonYTTranscript({ $$inline: true });

    	const block = {
    		c: function create() {
    			create_component(myyoutube.$$.fragment);
    			t = space();
    			create_component(ytpicsubs.$$.fragment);
    		},
    		m: function mount(target, anchor) {
    			mount_component(myyoutube, target, anchor);
    			insert_dev(target, t, anchor);
    			mount_component(ytpicsubs, target, anchor);
    			current = true;
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(myyoutube.$$.fragment, local);
    			transition_in(ytpicsubs.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(myyoutube.$$.fragment, local);
    			transition_out(ytpicsubs.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			destroy_component(myyoutube, detaching);
    			if (detaching) detach_dev(t);
    			destroy_component(ytpicsubs, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_default_slot_2.name,
    		type: "slot",
    		source: "(83:1) <SimpleCollapsible title='YT Player Idea'>",
    		ctx
    	});

    	return block;
    }

    // (88:1) <SimpleCollapsible title='Chess Loader as a glossary/vocab repitition Tool'>
    function create_default_slot_1(ctx) {
    	let chessstudytool;
    	let current;
    	chessstudytool = new ChessStudyTool({ $$inline: true });

    	const block = {
    		c: function create() {
    			create_component(chessstudytool.$$.fragment);
    		},
    		m: function mount(target, anchor) {
    			mount_component(chessstudytool, target, anchor);
    			current = true;
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(chessstudytool.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(chessstudytool.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			destroy_component(chessstudytool, detaching);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_default_slot_1.name,
    		type: "slot",
    		source: "(88:1) <SimpleCollapsible title='Chess Loader as a glossary/vocab repitition Tool'>",
    		ctx
    	});

    	return block;
    }

    // (92:1) <SimpleCollapsible title="Text/Code to YAML to Graph Ideas for Visual structure">
    function create_default_slot(ctx) {
    	let grapheditloadtool;
    	let t0;
    	let codecompariontoolingraph;
    	let t1;
    	let h1;
    	let t2;
    	let b;
    	let t4;
    	let current;
    	grapheditloadtool = new GraphEditLoadTool({ $$inline: true });
    	codecompariontoolingraph = new CodeComparionToolinGraph({ $$inline: true });

    	const block = {
    		c: function create() {
    			create_component(grapheditloadtool.$$.fragment);
    			t0 = space();
    			create_component(codecompariontoolingraph.$$.fragment);
    			t1 = space();
    			h1 = element$1("h1");
    			t2 = text("Placeholder for: table of just input output pairs to plan intermediary nodes on the path to the solution (");
    			b = element$1("b");
    			b.textContent = "which should allow some flattened input and output for an llm to use";
    			t4 = text(")");
    			add_location(b, file, 94, 112, 4267);
    			attr_dev(h1, "class", "svelte-192gzri");
    			add_location(h1, file, 94, 2, 4157);
    		},
    		m: function mount(target, anchor) {
    			mount_component(grapheditloadtool, target, anchor);
    			insert_dev(target, t0, anchor);
    			mount_component(codecompariontoolingraph, target, anchor);
    			insert_dev(target, t1, anchor);
    			insert_dev(target, h1, anchor);
    			append_dev(h1, t2);
    			append_dev(h1, b);
    			append_dev(h1, t4);
    			current = true;
    		},
    		p: noop$2,
    		i: function intro(local) {
    			if (current) return;
    			transition_in(grapheditloadtool.$$.fragment, local);
    			transition_in(codecompariontoolingraph.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(grapheditloadtool.$$.fragment, local);
    			transition_out(codecompariontoolingraph.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			destroy_component(grapheditloadtool, detaching);
    			if (detaching) detach_dev(t0);
    			destroy_component(codecompariontoolingraph, detaching);
    			if (detaching) detach_dev(t1);
    			if (detaching) detach_dev(h1);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_default_slot.name,
    		type: "slot",
    		source: "(92:1) <SimpleCollapsible title=\\\"Text/Code to YAML to Graph Ideas for Visual structure\\\">",
    		ctx
    	});

    	return block;
    }

    function create_fragment(ctx) {
    	let main;
    	let testspace;
    	let t0;
    	let h10;
    	let t1;
    	let t2;
    	let t3;
    	let t4;
    	let h20;
    	let t6;
    	let p;
    	let t7;
    	let a;
    	let t9;
    	let t10;
    	let h11;
    	let t12;
    	let div;
    	let h21;
    	let t14;
    	let br;
    	let t15;
    	let t16;
    	let simplecollapsible0;
    	let t17;
    	let simplecollapsible1;
    	let t18;
    	let simplecollapsible2;
    	let t19;
    	let simplecollapsible3;
    	let t20;
    	let simplecollapsible4;
    	let t21;
    	let simplecollapsible5;
    	let t22;
    	let h12;
    	let t24;
    	let h22;
    	let t26;
    	let dotgame;
    	let current;
    	testspace = new Testspace({ $$inline: true });

    	simplecollapsible0 = new SimpleCollapsible({
    			props: {
    				title: "Sentence Order Practice",
    				$$slots: { default: [create_default_slot_5] },
    				$$scope: { ctx }
    			},
    			$$inline: true
    		});

    	simplecollapsible1 = new SimpleCollapsible({
    			props: {
    				title: "Random Text Idea Tests",
    				$$slots: { default: [create_default_slot_4] },
    				$$scope: { ctx }
    			},
    			$$inline: true
    		});

    	simplecollapsible2 = new SimpleCollapsible({
    			props: {
    				title: "Nested Comments Idea",
    				$$slots: { default: [create_default_slot_3] },
    				$$scope: { ctx }
    			},
    			$$inline: true
    		});

    	simplecollapsible3 = new SimpleCollapsible({
    			props: {
    				title: "YT Player Idea",
    				$$slots: { default: [create_default_slot_2] },
    				$$scope: { ctx }
    			},
    			$$inline: true
    		});

    	simplecollapsible4 = new SimpleCollapsible({
    			props: {
    				title: "Chess Loader as a glossary/vocab repitition Tool",
    				$$slots: { default: [create_default_slot_1] },
    				$$scope: { ctx }
    			},
    			$$inline: true
    		});

    	simplecollapsible5 = new SimpleCollapsible({
    			props: {
    				title: "Text/Code to YAML to Graph Ideas for Visual structure",
    				$$slots: { default: [create_default_slot] },
    				$$scope: { ctx }
    			},
    			$$inline: true
    		});

    	dotgame = new MovingDotSpacePortfromReact({ $$inline: true });

    	const block = {
    		c: function create() {
    			main = element$1("main");
    			create_component(testspace.$$.fragment);
    			t0 = space();
    			h10 = element$1("h1");
    			t1 = text("LLM Assisted Hello ");
    			t2 = text(/*name*/ ctx[0]);
    			t3 = text("!");
    			t4 = space();
    			h20 = element$1("h2");
    			h20.textContent = "(I forgot to log how many prompts to make the whole page. As most of code is from llms, a planning LLM could have made this in 1 day. Prompts to app should be a benchmark)";
    			t6 = space();
    			p = element$1("p");
    			t7 = text("Visit the ");
    			a = element$1("a");
    			a.textContent = "Svelte tutorial";
    			t9 = text(" to learn how to build Svelte apps. (or ask Claude / GPT4 for help)");
    			t10 = space();
    			h11 = element$1("h1");
    			h11.textContent = "Brainstorm for Educational Interfaces to add LLM and other models into (Which gradio 3 couldnt do at the time)";
    			t12 = space();
    			div = element$1("div");
    			h21 = element$1("h2");
    			h21.textContent = "Random Idea";
    			t14 = text("\n\t\tLearning through analogies - comprehension of abstract things is easiest with things you can see (shapes and structures) so to learn quick you have to keep giving an llm a pair of contrasting items in your mind you think are closest to the concept and it will gradually help you move towards the 'most effiecient shape' for the idea you are learning\n\t\t");
    			br = element$1("br");
    			t15 = text(" eg. embedding space is closer to a cup with air or a plastic bag with randomly shaped item inside.");
    			t16 = space();
    			create_component(simplecollapsible0.$$.fragment);
    			t17 = space();
    			create_component(simplecollapsible1.$$.fragment);
    			t18 = space();
    			create_component(simplecollapsible2.$$.fragment);
    			t19 = space();
    			create_component(simplecollapsible3.$$.fragment);
    			t20 = space();
    			create_component(simplecollapsible4.$$.fragment);
    			t21 = space();
    			create_component(simplecollapsible5.$$.fragment);
    			t22 = space();
    			h12 = element$1("h1");
    			h12.textContent = "Themeable Game Brainstorm - Image + Lists - Game as Universal Translator for any subject - Textbook to Realwork Demonstation / Mockup of Digital Twin / Custom Game playing";
    			t24 = space();
    			h22 = element$1("h2");
    			h22.textContent = "Also bridge to testing on low pc before auto refactor pipeline to playcanvas and then to unreal engine = truly multiplatform game";
    			t26 = space();
    			create_component(dotgame.$$.fragment);
    			attr_dev(h10, "class", "svelte-192gzri");
    			add_location(h10, file, 43, 1, 1490);
    			add_location(h20, file, 44, 1, 1527);
    			attr_dev(a, "href", "https://svelte.dev/tutorial");
    			add_location(a, file, 45, 14, 1722);
    			add_location(p, file, 45, 1, 1709);
    			attr_dev(h11, "class", "svelte-192gzri");
    			add_location(h11, file, 49, 1, 1976);
    			add_location(h21, file, 51, 2, 2106);
    			add_location(br, file, 53, 2, 2481);
    			add_location(div, file, 50, 1, 2098);
    			attr_dev(h12, "class", "svelte-192gzri");
    			add_location(h12, file, 97, 1, 4374);
    			add_location(h22, file, 98, 1, 4558);
    			attr_dev(main, "class", "svelte-192gzri");
    			add_location(main, file, 40, 0, 1466);
    		},
    		l: function claim(nodes) {
    			throw new Error("options.hydrate only works if the component was compiled with the `hydratable: true` option");
    		},
    		m: function mount(target, anchor) {
    			insert_dev(target, main, anchor);
    			mount_component(testspace, main, null);
    			append_dev(main, t0);
    			append_dev(main, h10);
    			append_dev(h10, t1);
    			append_dev(h10, t2);
    			append_dev(h10, t3);
    			append_dev(main, t4);
    			append_dev(main, h20);
    			append_dev(main, t6);
    			append_dev(main, p);
    			append_dev(p, t7);
    			append_dev(p, a);
    			append_dev(p, t9);
    			append_dev(main, t10);
    			append_dev(main, h11);
    			append_dev(main, t12);
    			append_dev(main, div);
    			append_dev(div, h21);
    			append_dev(div, t14);
    			append_dev(div, br);
    			append_dev(div, t15);
    			append_dev(main, t16);
    			mount_component(simplecollapsible0, main, null);
    			append_dev(main, t17);
    			mount_component(simplecollapsible1, main, null);
    			append_dev(main, t18);
    			mount_component(simplecollapsible2, main, null);
    			append_dev(main, t19);
    			mount_component(simplecollapsible3, main, null);
    			append_dev(main, t20);
    			mount_component(simplecollapsible4, main, null);
    			append_dev(main, t21);
    			mount_component(simplecollapsible5, main, null);
    			append_dev(main, t22);
    			append_dev(main, h12);
    			append_dev(main, t24);
    			append_dev(main, h22);
    			append_dev(main, t26);
    			mount_component(dotgame, main, null);
    			current = true;
    		},
    		p: function update(ctx, [dirty]) {
    			if (!current || dirty & /*name*/ 1) set_data_dev(t2, /*name*/ ctx[0]);
    			const simplecollapsible0_changes = {};

    			if (dirty & /*$$scope*/ 64) {
    				simplecollapsible0_changes.$$scope = { dirty, ctx };
    			}

    			simplecollapsible0.$set(simplecollapsible0_changes);
    			const simplecollapsible1_changes = {};

    			if (dirty & /*$$scope*/ 64) {
    				simplecollapsible1_changes.$$scope = { dirty, ctx };
    			}

    			simplecollapsible1.$set(simplecollapsible1_changes);
    			const simplecollapsible2_changes = {};

    			if (dirty & /*$$scope*/ 64) {
    				simplecollapsible2_changes.$$scope = { dirty, ctx };
    			}

    			simplecollapsible2.$set(simplecollapsible2_changes);
    			const simplecollapsible3_changes = {};

    			if (dirty & /*$$scope*/ 64) {
    				simplecollapsible3_changes.$$scope = { dirty, ctx };
    			}

    			simplecollapsible3.$set(simplecollapsible3_changes);
    			const simplecollapsible4_changes = {};

    			if (dirty & /*$$scope*/ 64) {
    				simplecollapsible4_changes.$$scope = { dirty, ctx };
    			}

    			simplecollapsible4.$set(simplecollapsible4_changes);
    			const simplecollapsible5_changes = {};

    			if (dirty & /*$$scope*/ 64) {
    				simplecollapsible5_changes.$$scope = { dirty, ctx };
    			}

    			simplecollapsible5.$set(simplecollapsible5_changes);
    		},
    		i: function intro(local) {
    			if (current) return;
    			transition_in(testspace.$$.fragment, local);
    			transition_in(simplecollapsible0.$$.fragment, local);
    			transition_in(simplecollapsible1.$$.fragment, local);
    			transition_in(simplecollapsible2.$$.fragment, local);
    			transition_in(simplecollapsible3.$$.fragment, local);
    			transition_in(simplecollapsible4.$$.fragment, local);
    			transition_in(simplecollapsible5.$$.fragment, local);
    			transition_in(dotgame.$$.fragment, local);
    			current = true;
    		},
    		o: function outro(local) {
    			transition_out(testspace.$$.fragment, local);
    			transition_out(simplecollapsible0.$$.fragment, local);
    			transition_out(simplecollapsible1.$$.fragment, local);
    			transition_out(simplecollapsible2.$$.fragment, local);
    			transition_out(simplecollapsible3.$$.fragment, local);
    			transition_out(simplecollapsible4.$$.fragment, local);
    			transition_out(simplecollapsible5.$$.fragment, local);
    			transition_out(dotgame.$$.fragment, local);
    			current = false;
    		},
    		d: function destroy(detaching) {
    			if (detaching) detach_dev(main);
    			destroy_component(testspace);
    			destroy_component(simplecollapsible0);
    			destroy_component(simplecollapsible1);
    			destroy_component(simplecollapsible2);
    			destroy_component(simplecollapsible3);
    			destroy_component(simplecollapsible4);
    			destroy_component(simplecollapsible5);
    			destroy_component(dotgame);
    		}
    	};

    	dispatch_dev("SvelteRegisterBlock", {
    		block,
    		id: create_fragment.name,
    		type: "component",
    		source: "",
    		ctx
    	});

    	return block;
    }

    function instance($$self, $$props, $$invalidate) {
    	let { $$slots: slots = {}, $$scope } = $$props;
    	validate_slots('App', slots, []);
    	let { name } = $$props;
    	let showModal = false;

    	function openModal() {
    		showModal = true;
    	}

    	function closeModal() {
    		showModal = false;
    	}

    	let word = 'extraordinary';

    	let wordList = [
    		['ex', 'tra', 'or', 'di', 'nar', 'y'],
    		['sub', 'stan', 'tial'],
    		['pro', 'gres', 'sion']
    	];

    	$$self.$$.on_mount.push(function () {
    		if (name === undefined && !('name' in $$props || $$self.$$.bound[$$self.$$.props['name']])) {
    			console.warn("<App> was created without expected prop 'name'");
    		}
    	});

    	const writable_props = ['name'];

    	Object.keys($$props).forEach(key => {
    		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== '$$' && key !== 'slot') console.warn(`<App> was created with unknown prop '${key}'`);
    	});

    	$$self.$$set = $$props => {
    		if ('name' in $$props) $$invalidate(0, name = $$props.name);
    	};

    	$$self.$capture_state = () => ({
    		name,
    		VideoGradioComponentBrainstorming,
    		DotGame: MovingDotSpacePortfromReact,
    		MyYoutube: YoutubeIframeAPICustomInterface,
    		NestedCommentsSvelte: RecursiveNestedCommentsElement,
    		CopyRemove: CopyandRemoveListComponent,
    		ReadingStateCounter,
    		SubRepPrac: DeliberateSubconciousRepititionPractice,
    		LLMWF: LLMWorkflowTest,
    		YTPicSubs: PictureSubtitlesbasedonYTTranscript,
    		OrderasPractice: PSWSasspellingpractice,
    		FirstSyllable: ListeningPracticeandSyllableStudy,
    		Testspace,
    		SimpleCollapsible,
    		ChessStudyTool,
    		CodeComparionToolinGraph,
    		GraphEditLoadTool,
    		SentenceOrderPracticeandState,
    		showModal,
    		openModal,
    		closeModal,
    		word,
    		wordList
    	});

    	$$self.$inject_state = $$props => {
    		if ('name' in $$props) $$invalidate(0, name = $$props.name);
    		if ('showModal' in $$props) showModal = $$props.showModal;
    		if ('word' in $$props) word = $$props.word;
    		if ('wordList' in $$props) $$invalidate(1, wordList = $$props.wordList);
    	};

    	if ($$props && "$$inject" in $$props) {
    		$$self.$inject_state($$props.$$inject);
    	}

    	return [name, wordList];
    }

    class App extends SvelteComponentDev {
    	constructor(options) {
    		super(options);
    		init(this, options, instance, create_fragment, safe_not_equal, { name: 0 });

    		dispatch_dev("SvelteRegisterComponent", {
    			component: this,
    			tagName: "App",
    			options,
    			id: create_fragment.name
    		});
    	}

    	get name() {
    		throw new Error("<App>: Props cannot be read directly from the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}

    	set name(value) {
    		throw new Error("<App>: Props cannot be set directly on the component instance unless compiling with 'accessors: true' or '<svelte:options accessors/>'");
    	}
    }

    const app = new App({
    	target: document.body,
    	props: {
    		name: 'world'
    	}
    });

    return app;

})();
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