1 // Copyright 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "cc/base/math_util.h" 6 #include "testing/gtest/include/gtest/gtest.h" 7 #include "ui/gfx/quad_f.h" 8 #include "ui/gfx/rect_f.h" 9 #include "ui/gfx/transform.h" 10 11 namespace cc { 12 namespace { 13 14 // TODO(danakj) Move this test to ui/gfx/ when we don't need MathUtil::MapQuad. 15 TEST(FloatQuadTest, IsRectilinearTest) { 16 const int kNumRectilinear = 8; 17 gfx::Transform rectilinear_trans[kNumRectilinear]; 18 rectilinear_trans[1].Rotate(90.f); 19 rectilinear_trans[2].Rotate(180.f); 20 rectilinear_trans[3].Rotate(270.f); 21 rectilinear_trans[4].SkewX(0.00000000001f); 22 rectilinear_trans[5].SkewY(0.00000000001f); 23 rectilinear_trans[6].Scale(0.00001f, 0.00001f); 24 rectilinear_trans[6].Rotate(180.f); 25 rectilinear_trans[7].Scale(100000.f, 100000.f); 26 rectilinear_trans[7].Rotate(180.f); 27 28 gfx::QuadF original( 29 gfx::RectF(0.01010101f, 0.01010101f, 100.01010101f, 100.01010101f)); 30 31 for (int i = 0; i < kNumRectilinear; ++i) { 32 bool clipped = false; 33 gfx::QuadF quad = 34 MathUtil::MapQuad(rectilinear_trans[i], original, &clipped); 35 ASSERT_TRUE(!clipped) << "case " << i; 36 EXPECT_TRUE(quad.IsRectilinear()) << "case " << i; 37 } 38 39 const int kNumNonRectilinear = 10; 40 gfx::Transform non_rectilinear_trans[kNumNonRectilinear]; 41 non_rectilinear_trans[0].Rotate(359.9999f); 42 non_rectilinear_trans[1].Rotate(0.0000001f); 43 non_rectilinear_trans[2].Rotate(89.9999f); 44 non_rectilinear_trans[3].Rotate(90.00001f); 45 non_rectilinear_trans[4].Rotate(179.9999f); 46 non_rectilinear_trans[5].Rotate(180.00001f); 47 non_rectilinear_trans[6].Rotate(269.9999f); 48 non_rectilinear_trans[7].Rotate(270.0001f); 49 non_rectilinear_trans[8].SkewX(0.00001f); 50 non_rectilinear_trans[9].SkewY(0.00001f); 51 52 for (int i = 0; i < kNumNonRectilinear; ++i) { 53 bool clipped = false; 54 gfx::QuadF quad = 55 MathUtil::MapQuad(non_rectilinear_trans[i], original, &clipped); 56 ASSERT_TRUE(!clipped) << "case " << i; 57 EXPECT_FALSE(quad.IsRectilinear()) << "case " << i; 58 } 59 } 60 61 } // namespace 62 } // namespace cc 63
