anchor: love.graphics.transformPoint
  Converts the given 2D position from global coordinates into screen-space.
  
  This effectively applies the current graphics transformations to the given position. A similar Transform:transformPoint method exists for Transform objects.
  screenX, screenY = love.graphics.transformPoint( globalX, globalY )
  globalX number The x component of the position in global coordinates.
  globalY number The y component of the position in global coordinates.
  screenX number The x component of the position with graphics transformations applied.
  screenY number The y component of the position with graphics transformations applied.