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CloseUse a convex polygon shape to interpret the PhysicsShape2D geometry.
A polygon geometry type is comprised of a minimum of three (triangle) vertices and maximum defined by Physics2D.MaxPolygonShapeVertices in the PhysicsShape2D. The vertices represent a set of consecutive edges where each vertex connects to the next vertex with the last vertex automatically representing an edge connecting to the first vertex resulting in a closed primitive shape. These edges must result in a convex polygon. If this is not the case then the physics system will constrain the polygon to be convex by producing a convex hull. All polygon collision detection uses convex polygons for performance reasons.
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