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| author | Thorsten Behrens <tbehrens@novell.com> | 2011-03-15 01:10:15 +0100 |
|---|---|---|
| committer | Thorsten Behrens <tbehrens@novell.com> | 2011-03-15 01:12:05 +0100 |
| commit | 7e369e66463750564a9b45700db82ca44c10a561 (patch) | |
| tree | 1c57265cfe4c64ea3bc47e9e6003d694cf71163a /basegfx/test | |
| parent | e6a9195da918c1db9fad99cc6137785fe703ae3e (diff) | |
Lock rotation matrix orthogonality via unit test
There were cases reported when multiples of pi/2 did not yield a
properly-orthogonal rotation matrix. locked via unit test.
Diffstat (limited to 'basegfx/test')
| -rw-r--r-- | basegfx/test/basegfx2d.cxx | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/basegfx/test/basegfx2d.cxx b/basegfx/test/basegfx2d.cxx index 9a6c2dac4a38..6cccd67a9c21 100644 --- a/basegfx/test/basegfx2d.cxx +++ b/basegfx/test/basegfx2d.cxx @@ -709,6 +709,43 @@ public: CPPUNIT_ASSERT_MESSAGE("scale", maScale == mat); } + void rotate() + { + B2DHomMatrix mat; + mat.rotate(90*F_PI180); + CPPUNIT_ASSERT_MESSAGE("rotate pi/2 yields exact matrix", + mat.get(0,0) == 0.0 && + mat.get(0,1) == -1.0 && + mat.get(0,2) == 0.0 && + mat.get(1,0) == 1.0 && + mat.get(1,1) == 0.0 && + mat.get(1,2) == 0.0); + mat.rotate(90*F_PI180); + CPPUNIT_ASSERT_MESSAGE("rotate pi yields exact matrix", + mat.get(0,0) == -1.0 && + mat.get(0,1) == 0.0 && + mat.get(0,2) == 0.0 && + mat.get(1,0) == 0.0 && + mat.get(1,1) == -1.0 && + mat.get(1,2) == 0.0); + mat.rotate(90*F_PI180); + CPPUNIT_ASSERT_MESSAGE("rotate 3/2 pi yields exact matrix", + mat.get(0,0) == 0.0 && + mat.get(0,1) == 1.0 && + mat.get(0,2) == 0.0 && + mat.get(1,0) == -1.0 && + mat.get(1,1) == 0.0 && + mat.get(1,2) == 0.0); + mat.rotate(90*F_PI180); + CPPUNIT_ASSERT_MESSAGE("rotate 2 pi yields exact matrix", + mat.get(0,0) == 1.0 && + mat.get(0,1) == 0.0 && + mat.get(0,2) == 0.0 && + mat.get(1,0) == 0.0 && + mat.get(1,1) == 1.0 && + mat.get(1,2) == 0.0); + } + void translate() { B2DHomMatrix mat; @@ -895,6 +932,7 @@ public: CPPUNIT_TEST(identity); CPPUNIT_TEST(scale); CPPUNIT_TEST(translate); + CPPUNIT_TEST(rotate); CPPUNIT_TEST(shear); CPPUNIT_TEST(multiply); CPPUNIT_TEST(decompose); |