| // Copyright 2017 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "core/fxcrt/fx_coordinates.h" |
| |
| #include <vector> |
| |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| TEST(CFX_FloatRect, GetBBox) { |
| CFX_FloatRect rect = CFX_FloatRect::GetBBox(nullptr, 0); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| |
| std::vector<CFX_PointF> data; |
| data.emplace_back(0.0f, 0.0f); |
| rect = CFX_FloatRect::GetBBox(data.data(), 0); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| rect = CFX_FloatRect::GetBBox(data.data(), data.size()); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| |
| data.emplace_back(2.5f, 6.2f); |
| data.emplace_back(1.5f, 6.2f); |
| rect = CFX_FloatRect::GetBBox(data.data(), 2); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(2.5f, rect.right); |
| EXPECT_FLOAT_EQ(6.2f, rect.top); |
| |
| rect = CFX_FloatRect::GetBBox(data.data(), data.size()); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(2.5f, rect.right); |
| EXPECT_FLOAT_EQ(6.2f, rect.top); |
| |
| data.emplace_back(2.5f, 6.3f); |
| rect = CFX_FloatRect::GetBBox(data.data(), data.size()); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(2.5f, rect.right); |
| EXPECT_FLOAT_EQ(6.3f, rect.top); |
| |
| data.emplace_back(-3.0f, 6.3f); |
| rect = CFX_FloatRect::GetBBox(data.data(), data.size()); |
| EXPECT_FLOAT_EQ(-3.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(2.5f, rect.right); |
| EXPECT_FLOAT_EQ(6.3f, rect.top); |
| |
| data.emplace_back(4.0f, -8.0f); |
| rect = CFX_FloatRect::GetBBox(data.data(), data.size()); |
| EXPECT_FLOAT_EQ(-3.0f, rect.left); |
| EXPECT_FLOAT_EQ(-8.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(4.0f, rect.right); |
| EXPECT_FLOAT_EQ(6.3f, rect.top); |
| } |
| |
| TEST(CFX_FloatRect, Normalize) { |
| CFX_FloatRect rect; |
| rect.Normalize(); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| |
| rect = CFX_FloatRect(-1.0f, -3.0f, 4.5f, 3.2f); |
| rect.Normalize(); |
| EXPECT_FLOAT_EQ(-1.0f, rect.left); |
| EXPECT_FLOAT_EQ(-3.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(4.5f, rect.right); |
| EXPECT_FLOAT_EQ(3.2f, rect.top); |
| rect.Scale(-1.0f); |
| rect.Normalize(); |
| EXPECT_FLOAT_EQ(-4.5f, rect.left); |
| EXPECT_FLOAT_EQ(-3.2f, rect.bottom); |
| EXPECT_FLOAT_EQ(1.0f, rect.right); |
| EXPECT_FLOAT_EQ(3.0f, rect.top); |
| } |
| |
| TEST(CFX_FloatRect, Scale) { |
| CFX_FloatRect rect(-1.0f, -3.0f, 4.5f, 3.2f); |
| rect.Scale(1.0f); |
| EXPECT_FLOAT_EQ(-1.0f, rect.left); |
| EXPECT_FLOAT_EQ(-3.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(4.5f, rect.right); |
| EXPECT_FLOAT_EQ(3.2f, rect.top); |
| rect.Scale(0.5f); |
| EXPECT_FLOAT_EQ(-0.5, rect.left); |
| EXPECT_FLOAT_EQ(-1.5, rect.bottom); |
| EXPECT_FLOAT_EQ(2.25f, rect.right); |
| EXPECT_FLOAT_EQ(1.6f, rect.top); |
| rect.Scale(2.0f); |
| EXPECT_FLOAT_EQ(-1.0f, rect.left); |
| EXPECT_FLOAT_EQ(-3.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(4.5f, rect.right); |
| EXPECT_FLOAT_EQ(3.2f, rect.top); |
| rect.Scale(-1.0f); |
| EXPECT_FLOAT_EQ(1.0f, rect.left); |
| EXPECT_FLOAT_EQ(3.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(-4.5f, rect.right); |
| EXPECT_FLOAT_EQ(-3.2f, rect.top); |
| rect.Scale(0.0f); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| } |
| |
| TEST(CFX_FloatRect, ScaleEmpty) { |
| CFX_FloatRect rect; |
| rect.Scale(1.0f); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| rect.Scale(0.5f); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| rect.Scale(2.0f); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| rect.Scale(0.0f); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| } |
| |
| TEST(CFX_FloatRect, ScaleFromCenterPoint) { |
| CFX_FloatRect rect(-1.0f, -3.0f, 4.5f, 3.2f); |
| rect.ScaleFromCenterPoint(1.0f); |
| EXPECT_FLOAT_EQ(-1.0f, rect.left); |
| EXPECT_FLOAT_EQ(-3.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(4.5f, rect.right); |
| EXPECT_FLOAT_EQ(3.2f, rect.top); |
| rect.ScaleFromCenterPoint(0.5f); |
| EXPECT_FLOAT_EQ(0.375f, rect.left); |
| EXPECT_FLOAT_EQ(-1.45f, rect.bottom); |
| EXPECT_FLOAT_EQ(3.125f, rect.right); |
| EXPECT_FLOAT_EQ(1.65f, rect.top); |
| rect.ScaleFromCenterPoint(2.0f); |
| EXPECT_FLOAT_EQ(-1.0f, rect.left); |
| EXPECT_FLOAT_EQ(-3.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(4.5f, rect.right); |
| EXPECT_FLOAT_EQ(3.2f, rect.top); |
| rect.ScaleFromCenterPoint(-1.0f); |
| EXPECT_FLOAT_EQ(4.5f, rect.left); |
| EXPECT_FLOAT_EQ(3.2f, rect.bottom); |
| EXPECT_FLOAT_EQ(-1.0f, rect.right); |
| EXPECT_FLOAT_EQ(-3.0f, rect.top); |
| rect.ScaleFromCenterPoint(0.0f); |
| EXPECT_FLOAT_EQ(1.75f, rect.left); |
| EXPECT_NEAR(0.1f, rect.bottom, 0.001f); |
| EXPECT_FLOAT_EQ(1.75f, rect.right); |
| EXPECT_NEAR(0.1f, rect.top, 0.001f); |
| } |
| |
| TEST(CFX_FloatRect, ScaleFromCenterPointEmpty) { |
| CFX_FloatRect rect; |
| rect.ScaleFromCenterPoint(1.0f); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| rect.ScaleFromCenterPoint(0.5f); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| rect.ScaleFromCenterPoint(2.0f); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| rect.ScaleFromCenterPoint(0.0f); |
| EXPECT_FLOAT_EQ(0.0f, rect.left); |
| EXPECT_FLOAT_EQ(0.0f, rect.bottom); |
| EXPECT_FLOAT_EQ(0.0f, rect.right); |
| EXPECT_FLOAT_EQ(0.0f, rect.top); |
| } |
| |
| TEST(CFX_Matrix, ReverseIdentity) { |
| CFX_Matrix m; |
| m.SetIdentity(); |
| CFX_Matrix rev = m.GetInverse(); |
| |
| EXPECT_FLOAT_EQ(1.0, rev.a); |
| EXPECT_FLOAT_EQ(0.0, rev.b); |
| EXPECT_FLOAT_EQ(0.0, rev.c); |
| EXPECT_FLOAT_EQ(1.0, rev.d); |
| EXPECT_FLOAT_EQ(0.0, rev.e); |
| EXPECT_FLOAT_EQ(0.0, rev.f); |
| |
| CFX_PointF expected(2, 3); |
| CFX_PointF result = rev.Transform(m.Transform(CFX_PointF(2, 3))); |
| EXPECT_FLOAT_EQ(expected.x, result.x); |
| EXPECT_FLOAT_EQ(expected.y, result.y); |
| } |
| |
| TEST(CFX_Matrix, Reverse) { |
| static constexpr float data[6] = {3, 0, 2, 3, 1, 4}; |
| CFX_Matrix m(data); |
| CFX_Matrix rev = m.GetInverse(); |
| |
| EXPECT_FLOAT_EQ(0.33333334f, rev.a); |
| EXPECT_FLOAT_EQ(0.0f, rev.b); |
| EXPECT_FLOAT_EQ(-0.22222222f, rev.c); |
| EXPECT_FLOAT_EQ(0.33333334f, rev.d); |
| EXPECT_FLOAT_EQ(0.55555556f, rev.e); |
| EXPECT_FLOAT_EQ(-1.3333334f, rev.f); |
| |
| CFX_PointF expected(2, 3); |
| CFX_PointF result = rev.Transform(m.Transform(CFX_PointF(2, 3))); |
| EXPECT_FLOAT_EQ(expected.x, result.x); |
| EXPECT_FLOAT_EQ(expected.y, result.y); |
| } |
| |
| // Note, I think these are a bug and the matrix should be the identity. |
| TEST(CFX_Matrix, ReverseCR702041) { |
| // The determinate is < std::numeric_limits<float>::epsilon() |
| static constexpr float data[6] = {0.947368443f, -0.108947366f, -0.923076928f, |
| 0.106153846f, 18.0f, 787.929993f}; |
| CFX_Matrix m(data); |
| CFX_Matrix rev = m.GetInverse(); |
| |
| EXPECT_FLOAT_EQ(14247728.0f, rev.a); |
| EXPECT_FLOAT_EQ(14622668.0f, rev.b); |
| EXPECT_FLOAT_EQ(1.2389329e+08f, rev.c); |
| EXPECT_FLOAT_EQ(1.2715364e+08f, rev.d); |
| EXPECT_FLOAT_EQ(-9.7875698e+10f, rev.e); |
| EXPECT_FLOAT_EQ(-1.0045138e+11f, rev.f); |
| |
| // Should be 2, 3 |
| CFX_PointF expected(0, 0); |
| CFX_PointF result = rev.Transform(m.Transform(CFX_PointF(2, 3))); |
| EXPECT_FLOAT_EQ(expected.x, result.x); |
| EXPECT_FLOAT_EQ(expected.y, result.y); |
| } |
| |
| TEST(CFX_Matrix, ReverseCR714187) { |
| // The determinate is < std::numeric_limits<float>::epsilon() |
| static constexpr float data[6] = {0.000037f, 0.0f, 0.0f, |
| -0.000037f, 182.413101f, 136.977646f}; |
| CFX_Matrix m(data); |
| CFX_Matrix rev = m.GetInverse(); |
| |
| EXPECT_FLOAT_EQ(27027.025f, rev.a); |
| EXPECT_FLOAT_EQ(0.0f, rev.b); |
| EXPECT_FLOAT_EQ(0.0f, rev.c); |
| EXPECT_FLOAT_EQ(-27027.025f, rev.d); |
| EXPECT_FLOAT_EQ(-4930083.5f, rev.e); |
| EXPECT_FLOAT_EQ(3702098.2f, rev.f); |
| |
| // Should be 3 .... |
| CFX_PointF expected(2, 2.75); |
| CFX_PointF result = rev.Transform(m.Transform(CFX_PointF(2, 3))); |
| EXPECT_FLOAT_EQ(expected.x, result.x); |
| EXPECT_FLOAT_EQ(expected.y, result.y); |
| } |