/// <summary>
/// Decompose the polygon into several smaller non-concave polygon.
/// If the polygon is already convex, it will return the original polygon, unless it is over Settings.MaxPolygonVertices.
/// </summary>
public static List <Vertices> ConvexPartition(Vertices vertices)
{
vertices.ForceCounterClockWise();
Debug.Assert(vertices.Count > 3);
Debug.Assert(vertices.IsCounterClockWise());
return(TriangulatePolygon(vertices));
}