Calc::ConvexPolygon

Returns a boolean value indicating whether a given polygon is convex.

bool ConvexPolygon(int32 vertexCount, const Point3D *vertex, const Vector3D& normal);

vertexCount	The number of vertices defining the boundary of the polygon. This must be at least 3.
vertex	An array containing the vertices of the polygon, wound in counterclockwise order.
normal	The normal direction of the polygon.

The ConvexPolygon function returns true if the polygon defined by the vertexCount and vertex parameters is convex. If the polygon is concave or has three consecutive collinear vertices, then the return value is false.

Calc::PointInConvexPolygon

Calc::GetPolygonArea