iTextSharp.text.pdf.parser.Vector.Cross C# (CSharp) Method

        public Vector Cross(Matrix by)
        {
            float x = vals[I1]*by[Matrix.I11] + vals[I2]*by[Matrix.I21] + vals[I3]*by[Matrix.I31];
            float y = vals[I1]*by[Matrix.I12] + vals[I2]*by[Matrix.I22] + vals[I3]*by[Matrix.I32];
            float z = vals[I1]*by[Matrix.I13] + vals[I2]*by[Matrix.I23] + vals[I3]*by[Matrix.I33];

            return new Vector(x, y, z);
        }

        public void TestCrossVector()
        {
            Vector v = new Vector(2, 3, 4);
            Matrix m = new Matrix(5, 6, 7, 8, 9, 10);
            Vector shouldBe = new Vector(67, 76, 4);

            Vector rslt = v.Cross(m);
            Assert.AreEqual(shouldBe, rslt);
        }