Pathfinding.Polygon.IsClockwiseMargin C# (CSharp) Method

		public static bool IsClockwiseMargin (Int2 a, Int2 b, Int2 c) {
			return (long)(b.x - a.x) * (long)(c.y - a.y) - (long)(c.x - a.x) * (long)(b.y - a.y) <= 0;
		}
		

 public static bool ContainsPoint(TriangleMeshNode node, Vector3 pos, Int3[] vertices)
 {
     if (!Polygon.IsClockwiseMargin((Vector3)vertices[node.v0], (Vector3)vertices[node.v1], (Vector3)vertices[node.v2]))
     {
         Debug.LogError("Noes!");
     }
     return(Polygon.IsClockwiseMargin((Vector3)vertices[node.v0], (Vector3)vertices[node.v1], pos) && Polygon.IsClockwiseMargin((Vector3)vertices[node.v1], (Vector3)vertices[node.v2], pos) && Polygon.IsClockwiseMargin((Vector3)vertices[node.v2], (Vector3)vertices[node.v0], pos));
 }