Editor-only class for defining a collision polygon in 2D space. Allows editing a collision polygon's vertices. This class is only available in the editor. It will not appear in the scene tree at runtime. Creates a [Shape2D] for gameplay. Properties modified during gameplay will have no effect. Return whether the polygon is a [ConvexPolygonShape2D] ([code]build_mode==0[/code]), or a [ConcavePolygonShape2D] ([code]build_mode==1[/code]). Return the list of points that define the polygon. Set whether the polygon is to be a [ConvexPolygonShape2D] ([code]build_mode==0[/code]), or a [ConcavePolygonShape2D] ([code]build_mode==1[/code]). Set the array of points forming the polygon. When editing the point list via the editor, depending on [method get_build_mode], it has to be a list of points (for [code]build_mode==0[/code]), or a list of lines (for [code]build_mode==1[/code]). In the second case, the even elements of the array define the start point of the line, and the odd elements the end point. If BUILD_SOLIDS, the polygon and the area within it will have collision. If BUILD_SEGMENTS, only the edges of the polygon will have collision. If true, no collision will be produced. If true, only edges that face up, relative to CollisionPolygon2D's rotation, will collide with other objects. Array of vertices which define the polygon.