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author | commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2013-08-20 20:15:24 +0000 |
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committer | commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2013-08-20 20:15:24 +0000 |
commit | 950457543860eb1c545e0ef8bb2c20e2ddc6196e (patch) | |
tree | b4059a0ec57560ae74fb8462858624c12ab55cd6 /tests/Matrix44Test.cpp | |
parent | 9b051a375ba6d6b61cea98f35834cd032aaa5347 (diff) |
Add perf benchmarks and more unit tests for matrix inversion
R=jvanverth@google.com, reed@google.com
Author: shawnsingh@chromium.org
Review URL: https://chromiumcodereview.appspot.com/22886010
git-svn-id: http://skia.googlecode.com/svn/trunk@10836 2bbb7eff-a529-9590-31e7-b0007b416f81
Diffstat (limited to 'tests/Matrix44Test.cpp')
-rw-r--r-- | tests/Matrix44Test.cpp | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/tests/Matrix44Test.cpp b/tests/Matrix44Test.cpp index ef8c3fce50..e210fb7410 100644 --- a/tests/Matrix44Test.cpp +++ b/tests/Matrix44Test.cpp @@ -319,6 +319,103 @@ static void test_determinant(skiatest::Reporter* reporter) { REPORTER_ASSERT(reporter, nearly_equal_double(0, e.determinant())); } +static void test_invert(skiatest::Reporter* reporter) { + SkMatrix44 inverse; + double inverseData[16]; + + SkMatrix44 identity; + identity.setIdentity(); + identity.invert(&inverse); + inverse.asRowMajord(inverseData); + assert16<double>(reporter, inverseData, + 1, 0, 0, 0, + 0, 1, 0, 0, + 0, 0, 1, 0, + 0, 0, 0, 1); + + SkMatrix44 translation; + translation.setTranslate(2, 3, 4); + translation.invert(&inverse); + inverse.asRowMajord(inverseData); + assert16<double>(reporter, inverseData, + 1, 0, 0, -2, + 0, 1, 0, -3, + 0, 0, 1, -4, + 0, 0, 0, 1); + + SkMatrix44 scale; + scale.setScale(2, 4, 8); + scale.invert(&inverse); + inverse.asRowMajord(inverseData); + assert16<double>(reporter, inverseData, + 0.5, 0, 0, 0, + 0, 0.25, 0, 0, + 0, 0, 0.125, 0, + 0, 0, 0, 1); + + SkMatrix44 scaleTranslation; + scaleTranslation.setScale(10, 100, 1000); + scaleTranslation.preTranslate(2, 3, 4); + scaleTranslation.invert(&inverse); + inverse.asRowMajord(inverseData); + assert16<double>(reporter, inverseData, + 0.1, 0, 0, -2, + 0, 0.01, 0, -3, + 0, 0, 0.001, -4, + 0, 0, 0, 1); + + SkMatrix44 rotation; + rotation.setRotateDegreesAbout(0, 0, 1, 90); + rotation.invert(&inverse); + SkMatrix44 expected; + double expectedInverseRotation[16] = + {0, 1, 0, 0, + -1, 0, 0, 0, + 0, 0, 1, 0, + 0, 0, 0, 1}; + expected.setRowMajord(expectedInverseRotation); + REPORTER_ASSERT(reporter, nearly_equal(expected, inverse)); + + SkMatrix44 affine; + affine.setRotateDegreesAbout(0, 0, 1, 90); + affine.preScale(10, 20, 100); + affine.preTranslate(2, 3, 4); + affine.invert(&inverse); + double expectedInverseAffine[16] = + {0, 0.1, 0, -2, + -0.05, 0, 0, -3, + 0, 0, 0.01, -4, + 0, 0, 0, 1}; + expected.setRowMajord(expectedInverseAffine); + REPORTER_ASSERT(reporter, nearly_equal(expected, inverse)); + + SkMatrix44 perspective; + perspective.setIdentity(); + perspective.setDouble(3, 2, 1.0); + perspective.invert(&inverse); + double expectedInversePerspective[16] = + {1, 0, 0, 0, + 0, 1, 0, 0, + 0, 0, 1, 0, + 0, 0, -1, 1}; + expected.setRowMajord(expectedInversePerspective); + REPORTER_ASSERT(reporter, nearly_equal(expected, inverse)); + + SkMatrix44 affineAndPerspective; + affineAndPerspective.setIdentity(); + affineAndPerspective.setDouble(3, 2, 1.0); + affineAndPerspective.preScale(10, 20, 100); + affineAndPerspective.preTranslate(2, 3, 4); + affineAndPerspective.invert(&inverse); + double expectedInverseAffineAndPerspective[16] = + {0.1, 0, 2, -2, + 0, 0.05, 3, -3, + 0, 0, 4.01, -4, + 0, 0, -1, 1}; + expected.setRowMajord(expectedInverseAffineAndPerspective); + REPORTER_ASSERT(reporter, nearly_equal(expected, inverse)); +} + static void test_transpose(skiatest::Reporter* reporter) { SkMatrix44 a; SkMatrix44 b; @@ -468,6 +565,7 @@ static void TestMatrix44(skiatest::Reporter* reporter) { test_constructor(reporter); test_gettype(reporter); test_determinant(reporter); + test_invert(reporter); test_transpose(reporter); test_get_set_double(reporter); test_set_row_col_major(reporter); |