anchor: love.math.isConvex
  Checks whether a polygon is convex.
  
  PolygonShapes in love.physics, some forms of Meshes, and polygons drawn with love.graphics.polygon must be simple convex polygons.
  convex = love.math.isConvex( vertices )
  vertices table The vertices of the polygon as a table in the form of {x1, y1, x2, y2, x3, y3, ...}.
  convex boolean Whether the given polygon is convex.
  convex = love.math.isConvex( x1, y1, x2, y2, ... )
  x1 number The position of the first vertex of the polygon on the x-axis.
  y1 number The position of the first vertex of the polygon on the y-axis.
  x2 number The position of the second vertex of the polygon on the x-axis.
  y2 number The position of the second vertex of the polygon on the y-axis.
  ... number Additional position of the vertex of the polygon on the x-axis and y-axis.
  convex boolean Whether the given polygon is convex.