コード例 #1
0
        public void TestMultiplyByInverse()
        {
            var inputMatrix = new FinMatrix4x4();

            inputMatrix[0, 0] = 2;
            inputMatrix[0, 1] = 5;
            inputMatrix[0, 2] = 0;
            inputMatrix[0, 3] = 8;
            inputMatrix[1, 0] = 1;
            inputMatrix[1, 1] = 4;
            inputMatrix[1, 2] = 2;
            inputMatrix[1, 3] = 6;
            inputMatrix[2, 0] = 7;
            inputMatrix[2, 1] = 8;
            inputMatrix[2, 2] = 9;
            inputMatrix[2, 3] = 3;
            inputMatrix[3, 0] = 1;
            inputMatrix[3, 1] = 5;
            inputMatrix[3, 2] = 7;
            inputMatrix[3, 3] = 8;

            var inverseMatrix = inputMatrix.CloneAndInvert();

            var actualMatrix   = inputMatrix.CloneAndMultiply(inverseMatrix);
            var expectedMatrix = new FinMatrix4x4().SetIdentity();

            for (var r = 0; r < 4; r++)
            {
                for (var c = 0; c < 4; c++)
                {
                    Assert.AreEqual(expectedMatrix[r, c], actualMatrix[r, c], .0001f);
                }
            }
        }
コード例 #2
0
        public void TestInvert()
        {
            var inputMatrix = new FinMatrix4x4();

            inputMatrix[0, 0] = 2;
            inputMatrix[0, 1] = 5;
            inputMatrix[0, 2] = 0;
            inputMatrix[0, 3] = 8;
            inputMatrix[1, 0] = 1;
            inputMatrix[1, 1] = 4;
            inputMatrix[1, 2] = 2;
            inputMatrix[1, 3] = 6;
            inputMatrix[2, 0] = 7;
            inputMatrix[2, 1] = 8;
            inputMatrix[2, 2] = 9;
            inputMatrix[2, 3] = 3;
            inputMatrix[3, 0] = 1;
            inputMatrix[3, 1] = 5;
            inputMatrix[3, 2] = 7;
            inputMatrix[3, 3] = 8;

            var actualMatrix = inputMatrix.CloneAndInvert();

            var expectedMatrix = new FinMatrix4x4();

            expectedMatrix[0, 0] = 172f / 179;
            expectedMatrix[0, 1] = -343f / 179;
            expectedMatrix[0, 2] = 14f / 179;
            expectedMatrix[0, 3] = 80f / 179;
            expectedMatrix[1, 0] = -185f / 179;
            expectedMatrix[1, 1] = 422f / 179;
            expectedMatrix[1, 2] = 12f / 179;
            expectedMatrix[1, 3] = -136f / 179;
            expectedMatrix[2, 0] = -1f / 179;
            expectedMatrix[2, 1] = -49f / 179;
            expectedMatrix[2, 2] = 2f / 179;
            expectedMatrix[2, 3] = 37f / 179;
            expectedMatrix[3, 0] = 95f / 179;
            expectedMatrix[3, 1] = -178f / 179;
            expectedMatrix[3, 2] = -11f / 179;
            expectedMatrix[3, 3] = 65f / 179;

            for (var r = 0; r < 4; r++)
            {
                for (var c = 0; c < 4; c++)
                {
                    Assert.AreEqual(expectedMatrix[r, c], actualMatrix[r, c], .0001f);
                }
            }
        }