/// <summary>
/// Compute whether or not two polygons are colliding based on whether or not the vertices of
/// either are enclosed within the shape of the other. This is a simple means of detecting collisions
/// that can fail if the two polygons are heavily overlapped in such a way that one protrudes through
/// the other and out its opposing side without any vertices being enclosed.
/// </summary>
/// <param name="a">The first polygon.</param>
/// <param name="b">The second polygon</param>
/// <returns>True if the vertices collide; otherwise false.</returns>
public static bool ArePolygonVerticesColliding(Polygon2D a, Polygon2D b)
{
return(a.points.Any(b.EnclosesPoint) || b.points.Any(a.EnclosesPoint));
}
/// <summary>
/// Test whether a point is enclosed within a polygon. Points on the polygon edges are not
/// counted as contained within the polygon.
/// </summary>
/// <param name="p"></param>
/// <returns></returns>
public bool EnclosesPoint(Point2D p)
{
return(Polygon2D.IsPointInPolygon(p, this));
}