diff options
Diffstat (limited to 'tests/Matrix44Test.cpp')
| -rw-r--r-- | tests/Matrix44Test.cpp | 83 |
1 files changed, 81 insertions, 2 deletions
diff --git a/tests/Matrix44Test.cpp b/tests/Matrix44Test.cpp index 8755bd3..485b38b 100644 --- a/tests/Matrix44Test.cpp +++ b/tests/Matrix44Test.cpp @@ -1,7 +1,14 @@ + +/* + * Copyright 2011 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ #include "Test.h" #include "SkMatrix44.h" -static bool nearly_equal_scalar(SkScalar a, SkScalar b) { +static bool nearly_equal_scalar(SkMScalar a, SkMScalar b) { // Note that we get more compounded error for multiple operations when // SK_SCALAR_IS_FIXED. #ifdef SK_SCALAR_IS_FLOAT @@ -13,11 +20,37 @@ static bool nearly_equal_scalar(SkScalar a, SkScalar b) { return SkScalarAbs(a - b) <= tolerance; } +template <typename T> void assert16(skiatest::Reporter* reporter, const T data[], + T m0, T m1, T m2, T m3, + T m4, T m5, T m6, T m7, + T m8, T m9, T m10, T m11, + T m12, T m13, T m14, T m15) { + REPORTER_ASSERT(reporter, data[0] == m0); + REPORTER_ASSERT(reporter, data[1] == m1); + REPORTER_ASSERT(reporter, data[2] == m2); + REPORTER_ASSERT(reporter, data[3] == m3); + + REPORTER_ASSERT(reporter, data[4] == m4); + REPORTER_ASSERT(reporter, data[5] == m5); + REPORTER_ASSERT(reporter, data[6] == m6); + REPORTER_ASSERT(reporter, data[7] == m7); + + REPORTER_ASSERT(reporter, data[8] == m8); + REPORTER_ASSERT(reporter, data[9] == m9); + REPORTER_ASSERT(reporter, data[10] == m10); + REPORTER_ASSERT(reporter, data[11] == m11); + + REPORTER_ASSERT(reporter, data[12] == m12); + REPORTER_ASSERT(reporter, data[13] == m13); + REPORTER_ASSERT(reporter, data[14] == m14); + REPORTER_ASSERT(reporter, data[15] == m15); +} + static bool nearly_equal(const SkMatrix44& a, const SkMatrix44& b) { for (int i = 0; i < 4; ++i) { for (int j = 0; j < 4; ++j) { if (!nearly_equal_scalar(a.get(i, j), b.get(i, j))) { - printf("not equal %g %g\n", (float)a.get(i, j), (float)b.get(i, j)); + printf("not equal %g %g\n", a.get(i, j), b.get(i, j)); return false; } } @@ -31,8 +64,20 @@ static bool is_identity(const SkMatrix44& m) { return nearly_equal(m, identity); } +static void test_common_angles(skiatest::Reporter* reporter) { + SkMatrix44 rot; + // Test precision of rotation in common cases + int common_angles[] = { 0, 90, -90, 180, -180, 270, -270, 360, -360 }; + for (int i = 0; i < 9; ++i) { + rot.setRotateDegreesAbout(0, 0, -1, common_angles[i]); + + SkMatrix rot3x3 = rot; + REPORTER_ASSERT(reporter, rot3x3.rectStaysRect()); + } +} void TestMatrix44(skiatest::Reporter* reporter) { +#ifdef SK_SCALAR_IS_FLOAT SkMatrix44 mat, inverse, iden1, iden2, rot; mat.reset(); @@ -64,6 +109,40 @@ void TestMatrix44(skiatest::Reporter* reporter) { REPORTER_ASSERT(reporter, is_identity(iden1)); iden2.setConcat(inverse, mat); REPORTER_ASSERT(reporter, is_identity(iden2)); + + // test rol/col Major getters + { + mat.setTranslate(2, 3, 4); + float dataf[16]; + double datad[16]; + + mat.asColMajorf(dataf); + assert16<float>(reporter, dataf, + 1, 0, 0, 0, + 0, 1, 0, 0, + 0, 0, 1, 0, + 2, 3, 4, 1); + mat.asColMajord(datad); + assert16<double>(reporter, datad, 1, 0, 0, 0, + 0, 1, 0, 0, + 0, 0, 1, 0, + 2, 3, 4, 1); + mat.asRowMajorf(dataf); + assert16<float>(reporter, dataf, 1, 0, 0, 2, + 0, 1, 0, 3, + 0, 0, 1, 4, + 0, 0, 0, 1); + mat.asRowMajord(datad); + assert16<double>(reporter, datad, 1, 0, 0, 2, + 0, 1, 0, 3, + 0, 0, 1, 4, + 0, 0, 0, 1); + } + +#if 0 // working on making this pass + test_common_angles(reporter); +#endif +#endif } #include "TestClassDef.h" |