| <!DOCTYPE HTML> |
| <html> |
| <head> |
| <title>Geometry Interfaces: DOMMatrix invert</title> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <script> |
| |
| // TODO(hs1217.lee): create the DOMMatrix directly when the sequence constructor is supported. |
| function initMatrix(values) { |
| return new DOMMatrixReadOnly(values); |
| } |
| |
| test(function() { |
| var matrix2d = new DOMMatrix(initMatrix([1, 2, 3, 4, 5, 6])); |
| matrix2d.invertSelf(); |
| assert_true(matrix2d.is2D); |
| assert_equals(matrix2d.a, -2); |
| assert_equals(matrix2d.b, 1); |
| assert_equals(matrix2d.c, 1.5); |
| assert_equals(matrix2d.d, -0.5); |
| assert_equals(matrix2d.e, 1); |
| assert_equals(matrix2d.f, -2); |
| }, "DOMMatrix invertSelf() - invertible - 2D matrix"); |
| |
| test(function() { |
| var matrix2d = new DOMMatrix(initMatrix([1, 1, 1, 1, 1, 1])); |
| matrix2d.invertSelf(); |
| assert_false(matrix2d.is2D); |
| assert_equals(matrix2d.a, NaN); |
| assert_equals(matrix2d.b, NaN); |
| assert_equals(matrix2d.c, NaN); |
| assert_equals(matrix2d.d, NaN); |
| assert_equals(matrix2d.e, NaN); |
| assert_equals(matrix2d.f, NaN); |
| }, "DOMMatrix invertSelf() - uninvertible - 2D matrix"); |
| |
| test(function() { |
| var matrix3d = new DOMMatrix(initMatrix([10, 20, 30, 40, 40, 40, 30, 20, 10, 20, 40, 30, 20, 40, 50, 100])); |
| matrix3d.invertSelf(); |
| assert_false(matrix3d.is2D); |
| assert_equals(matrix3d.m11, -1.6); |
| assert_equals(matrix3d.m12, 0.05); |
| assert_equals(matrix3d.m13, 0.6); |
| assert_equals(matrix3d.m14, 0.45); |
| assert_equals(matrix3d.m21, 2.05); |
| assert_equals(matrix3d.m22, -0.025); |
| assert_equals(matrix3d.m23, -0.8); |
| assert_equals(matrix3d.m24, -0.575); |
| assert_equals(matrix3d.m31, -0.4); |
| assert_equals(matrix3d.m32, 0); |
| assert_equals(matrix3d.m33, 0.2); |
| assert_equals(matrix3d.m34, 0.1); |
| assert_equals(matrix3d.m41, -0.3); |
| assert_equals(matrix3d.m42, -0); |
| assert_equals(matrix3d.m43, 0.1); |
| assert_equals(matrix3d.m44, 0.1); |
| }, "DOMMatrix invertSelf() - 3D matrix"); |
| |
| test(function() { |
| var matrix3d = new DOMMatrix(initMatrix([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16])); |
| matrix3d.invertSelf(); |
| assert_false(matrix3d.is2D); |
| assert_equals(matrix3d.m11, NaN); |
| assert_equals(matrix3d.m12, NaN); |
| assert_equals(matrix3d.m13, NaN); |
| assert_equals(matrix3d.m14, NaN); |
| assert_equals(matrix3d.m21, NaN); |
| assert_equals(matrix3d.m22, NaN); |
| assert_equals(matrix3d.m23, NaN); |
| assert_equals(matrix3d.m24, NaN); |
| assert_equals(matrix3d.m31, NaN); |
| assert_equals(matrix3d.m32, NaN); |
| assert_equals(matrix3d.m33, NaN); |
| assert_equals(matrix3d.m34, NaN); |
| assert_equals(matrix3d.m41, NaN); |
| assert_equals(matrix3d.m42, NaN); |
| assert_equals(matrix3d.m43, NaN); |
| assert_equals(matrix3d.m44, NaN); |
| }, "DOMMatrix invertSelf() - uninvertible - 3D matrix"); |
| </script> |
| </body> |
| </html> |
