tk2dEditor.Triangulator.InsideTriangle C# (CSharp) Method

        private bool InsideTriangle(Vector2 A, Vector2 B, Vector2 C, Vector2 P)
        {
            float ax, ay, bx, @by, cx, cy, apx, apy, bpx, bpy,
            cpx, cpy;
            float cCROSSap, bCROSScp, aCROSSbp;

            ax = C.x - B.x;
            ay = C.y - B.y;
            bx = A.x - C.x;
            @by = A.y - C.y;
            cx = B.x - A.x;
            cy = B.y - A.y;
            apx = P.x - A.x;
            apy = P.y - A.y;
            bpx = P.x - B.x;
            bpy = P.y - B.y;
            cpx = P.x - C.x;
            cpy = P.y - C.y;

            aCROSSbp = ax * bpy - ay * bpx;
            cCROSSap = cx * apy - cy * apx;
            bCROSScp = bx * cpy - @by * cpx;

            return ((aCROSSbp >= 0.0f) && (bCROSScp >= 0.0f) && (cCROSSap >= 0.0f));
        }