Not for review: Move the implementation of WebTransformOperations into chromium

cc/transform_operations_unittest.cc

Index: cc/transform_operations_unittest.cc
diff --git a/cc/transform_operations_unittest.cc b/cc/transform_operations_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6c54a5d512a374b260369591feff23b01f78ef20
--- /dev/null
+++ b/cc/transform_operations_unittest.cc
@@ -0,0 +1,603 @@
+// Copyright 2012 The Chromium 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 "base/memory/scoped_vector.h"
+#include "cc/test/geometry_test_utils.h"
+#include "cc/transform_operations.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebTransformationMatrix.h"
+
+using WebKit::WebTransformationMatrix;
+
+namespace cc {
+namespace {
+
+TEST(TransformOperationTest, TransformTypesAreUnique) {
+  ScopedVector<TransformOperations> transforms;
+
+  TransformOperations* to_add = new TransformOperations();
+  to_add->AppendTranslate(1, 0, 0);
+  transforms.push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendRotate(0, 0, 1, 2);
+  transforms.push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendScale(2, 2, 2);
+  transforms.push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendSkew(1, 0);
+  transforms.push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendPerspective(800);
+  transforms.push_back(to_add);
+
+  for (size_t i = 0; i < transforms.size(); ++i) {
+    for (size_t j = 0; j < transforms.size(); ++j) {
+      bool matches_type = transforms[i]->MatchesTypes(*transforms[j]);
+      EXPECT_TRUE((i == j && matches_type) || !matches_type);
+    }
+  }
+}
+
+TEST(TransformOperationTest, MatchTypesSameLength) {
+  TransformOperations translates;
+  translates.AppendTranslate(1, 0, 0);
+  translates.AppendTranslate(1, 0, 0);
+  translates.AppendTranslate(1, 0, 0);
+
+  TransformOperations skews;
+  skews.AppendSkew(0, 2);
+  skews.AppendSkew(0, 2);
+  skews.AppendSkew(0, 2);
+
+  TransformOperations translates2;
+  translates2.AppendTranslate(0, 2, 0);
+  translates2.AppendTranslate(0, 2, 0);
+  translates2.AppendTranslate(0, 2, 0);
+
+  TransformOperations translates3 = translates2;
+
+  EXPECT_FALSE(translates.MatchesTypes(skews));
+  EXPECT_TRUE(translates.MatchesTypes(translates2));
+  EXPECT_TRUE(translates.MatchesTypes(translates3));
+}
+
+TEST(TransformOperationTest, MatchTypesDifferentLength) {
+  TransformOperations translates;
+  translates.AppendTranslate(1, 0, 0);
+  translates.AppendTranslate(1, 0, 0);
+  translates.AppendTranslate(1, 0, 0);
+
+  TransformOperations skews;
+  skews.AppendSkew(2, 0);
+  skews.AppendSkew(2, 0);
+
+  TransformOperations translates2;
+  translates2.AppendTranslate(0, 2, 0);
+  translates2.AppendTranslate(0, 2, 0);
+
+  EXPECT_FALSE(translates.MatchesTypes(skews));
+  EXPECT_FALSE(translates.MatchesTypes(translates2));
+}
+
+void GetIdentityOperations(ScopedVector<TransformOperations>* operations) {
+  TransformOperations* to_add = new TransformOperations();
+  operations->push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendTranslate(0, 0, 0);
+  operations->push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendTranslate(0, 0, 0);
+  to_add->AppendTranslate(0, 0, 0);
+  operations->push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendScale(1, 1, 1);
+  operations->push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendScale(1, 1, 1);
+  to_add->AppendScale(1, 1, 1);
+  operations->push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendSkew(0, 0);
+  operations->push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendSkew(0, 0);
+  to_add->AppendSkew(0, 0);
+  operations->push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendRotate(0, 0, 1, 0);
+  operations->push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendRotate(0, 0, 1, 0);
+  to_add->AppendRotate(0, 0, 1, 0);
+  operations->push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendMatrix(WebTransformationMatrix());
+  operations->push_back(to_add);
+
+  to_add = new TransformOperations();
+  to_add->AppendMatrix(WebTransformationMatrix());
+  to_add->AppendMatrix(WebTransformationMatrix());
+  operations->push_back(to_add);
+}
+
+TEST(TransformOperationTest, IdentityAlwaysMatches) {
+  ScopedVector<TransformOperations> operations;
+  GetIdentityOperations(&operations);
+
+  for (size_t i = 0; i < operations.size(); ++i) {
+    for (size_t j = 0; j < operations.size(); ++j)
+      EXPECT_TRUE(operations[i]->MatchesTypes(*operations[j]));
+  }
+}
+
+TEST(TransformOperationTest, ApplyTranslate) {
+  double x = 1;
+  double y = 2;
+  double z = 3;
+  TransformOperations operations;
+  operations.AppendTranslate(x, y, z);
+  WebTransformationMatrix expected;
+  expected.translate3d(x, y, z);
+  EXPECT_TRANSFORMATION_MATRIX_EQ(expected, operations.Apply());
+}
+
+TEST(TransformOperationTest, ApplyRotate) {
+  double x = 1;
+  double y = 2;
+  double z = 3;
+  double degrees = 80;
+  TransformOperations operations;
+  operations.AppendRotate(x, y, z, degrees);
+  WebTransformationMatrix expected;
+  expected.rotate3d(x, y, z, degrees);
+  EXPECT_TRANSFORMATION_MATRIX_EQ(expected, operations.Apply());
+}
+
+TEST(TransformOperationTest, ApplyScale) {
+  double x = 1;
+  double y = 2;
+  double z = 3;
+  TransformOperations operations;
+  operations.AppendScale(x, y, z);
+  WebTransformationMatrix expected;
+  expected.scale3d(x, y, z);
+  EXPECT_TRANSFORMATION_MATRIX_EQ(expected, operations.Apply());
+}
+
+TEST(TransformOperationTest, ApplySkew) {
+  double x = 1;
+  double y = 2;
+  TransformOperations operations;
+  operations.AppendSkew(x, y);
+  WebTransformationMatrix expected;
+  expected.skewX(x);
+  expected.skewY(y);
+  EXPECT_TRANSFORMATION_MATRIX_EQ(expected, operations.Apply());
+}
+
+TEST(TransformOperationTest, ApplyPerspective) {
+  double depth = 800;
+  TransformOperations operations;
+  operations.AppendPerspective(depth);
+  WebTransformationMatrix expected;
+  expected.applyPerspective(depth);
+  EXPECT_TRANSFORMATION_MATRIX_EQ(expected, operations.Apply());
+}
+
+TEST(TransformOperationTest, ApplyMatrix) {
+  double dx = 1;
+  double dy = 2;
+  double dz = 3;
+  WebTransformationMatrix expected_matrix;
+  expected_matrix.translate3d(dx, dy, dz);
+  TransformOperations matrix_transform;
+  matrix_transform.AppendMatrix(expected_matrix);
+  EXPECT_TRANSFORMATION_MATRIX_EQ(expected_matrix, matrix_transform.Apply());
+}
+
+TEST(TransformOperationTest, ApplyOrder) {
+  double sx = 2;
+  double sy = 4;
+  double sz = 8;
+
+  double dx = 1;
+  double dy = 2;
+  double dz = 3;
+
+  TransformOperations operations;
+  operations.AppendScale(sx, sy, sz);
+  operations.AppendTranslate(dx, dy, dz);
+
+  WebTransformationMatrix expected_scale_matrix;
+  expected_scale_matrix.scale3d(sx, sy, sz);
+
+  WebTransformationMatrix expected_translate_matrix;
+  expected_translate_matrix.translate3d(dx, dy, dz);
+
+  WebTransformationMatrix expected_combined_matrix = expected_scale_matrix;
+  expected_combined_matrix.multiply(expected_translate_matrix);
+
+  EXPECT_TRANSFORMATION_MATRIX_EQ(expected_combined_matrix, operations.Apply());
+}
+
+TEST(TransformOperationTest, BlendOrder) {
+  double sx1 = 2;
+  double sy1 = 4;
+  double sz1 = 8;
+
+  double dx1 = 1;
+  double dy1 = 2;
+  double dz1 = 3;
+
+  double sx2 = 4;
+  double sy2 = 8;
+  double sz2 = 16;
+
+  double dx2 = 10;
+  double dy2 = 20;
+  double dz2 = 30;
+
+  TransformOperations operations_from;
+  operations_from.AppendScale(sx1, sy1, sz1);
+  operations_from.AppendTranslate(dx1, dy1, dz1);
+
+  TransformOperations operations_to;
+  operations_to.AppendScale(sx2, sy2, sz2);
+  operations_to.AppendTranslate(dx2, dy2, dz2);
+
+  WebTransformationMatrix scale_from;
+  scale_from.scale3d(sx1, sy1, sz1);
+  WebTransformationMatrix translate_from;
+  translate_from.translate3d(dx1, dy1, dz1);
+
+  WebTransformationMatrix scale_to;
+  scale_to.scale3d(sx2, sy2, sz2);
+  WebTransformationMatrix translate_to;
+  translate_to.translate3d(dx2, dy2, dz2);
+
+  double progress = 0.25;
+
+  WebTransformationMatrix blended_scale = scale_to;
+  blended_scale.blend(scale_from, progress);
+
+  WebTransformationMatrix blended_translate = translate_to;
+  blended_translate.blend(translate_from, progress);
+
+  WebTransformationMatrix expected = blended_scale;
+  expected.multiply(blended_translate);
+
+  EXPECT_TRANSFORMATION_MATRIX_EQ(
+      expected, operations_to.Blend(operations_from, progress));
+}
+
+static void CheckProgress(double progress,
+              const WebTransformationMatrix& from_matrix,
+              const WebTransformationMatrix& to_matrix,
+              const TransformOperations& from_transform,
+              const TransformOperations& to_transform) {
+  WebTransformationMatrix expected_matrix = to_matrix;
+  expected_matrix.blend(from_matrix, progress);
+  EXPECT_TRANSFORMATION_MATRIX_EQ(
+      expected_matrix, to_transform.Blend(from_transform, progress));
+}
+
+TEST(TransformOperationTest, BlendProgress) {
+  double sx = 2;
+  double sy = 4;
+  double sz = 8;
+  TransformOperations operations_from;
+  operations_from.AppendScale(sx, sy, sz);
+
+  WebTransformationMatrix matrix_from;
+  matrix_from.scale3d(sx, sy, sz);
+
+  sx = 4;
+  sy = 8;
+  sz = 16;
+  TransformOperations operations_to;
+  operations_to.AppendScale(sx, sy, sz);
+
+  WebTransformationMatrix matrix_to;
+  matrix_to.scale3d(sx, sy, sz);
+
+  CheckProgress(-1, matrix_from, matrix_to, operations_from, operations_to);
+  CheckProgress(0, matrix_from, matrix_to, operations_from, operations_to);
+  CheckProgress(0.25, matrix_from, matrix_to, operations_from, operations_to);
+  CheckProgress(0.5, matrix_from, matrix_to, operations_from, operations_to);
+  CheckProgress(1, matrix_from, matrix_to, operations_from, operations_to);
+  CheckProgress(2, matrix_from, matrix_to, operations_from, operations_to);
+}
+
+TEST(TransformOperationTest, BlendWhenTypesDoNotMatch) {
+  double sx1 = 2;
+  double sy1 = 4;
+  double sz1 = 8;
+
+  double dx1 = 1;
+  double dy1 = 2;
+  double dz1 = 3;
+
+  double sx2 = 4;
+  double sy2 = 8;
+  double sz2 = 16;
+
+  double dx2 = 10;
+  double dy2 = 20;
+  double dz2 = 30;
+
+  TransformOperations operations_from;
+  operations_from.AppendScale(sx1, sy1, sz1);
+  operations_from.AppendTranslate(dx1, dy1, dz1);
+
+  TransformOperations operations_to;
+  operations_to.AppendTranslate(dx2, dy2, dz2);
+  operations_to.AppendScale(sx2, sy2, sz2);
+
+  WebTransformationMatrix from;
+  from.scale3d(sx1, sy1, sz1);
+  from.translate3d(dx1, dy1, dz1);
+
+  WebTransformationMatrix to;
+  to.translate3d(dx2, dy2, dz2);
+  to.scale3d(sx2, sy2, sz2);
+
+  double progress = 0.25;
+
+  WebTransformationMatrix expected = to;
+  expected.blend(from, progress);
+
+  EXPECT_TRANSFORMATION_MATRIX_EQ(
+      expected, operations_to.Blend(operations_from, progress));
+}
+
+TEST(TransformOperationTest, LargeRotationsWithSameAxis) {
+  TransformOperations operations_from;
+  operations_from.AppendRotate(0, 0, 1, 0);
+
+  TransformOperations operations_to;
+  operations_to.AppendRotate(0, 0, 2, 360);
+
+  double progress = 0.5;
+
+  WebTransformationMatrix expected;
+  expected.rotate3d(0, 0, 1, 180);
+
+  EXPECT_TRANSFORMATION_MATRIX_EQ(
+      expected, operations_to.Blend(operations_from, progress));
+}
+
+TEST(TransformOperationTest, LargeRotationsWithSameAxisInDifferentDirection) {
+  TransformOperations operations_from;
+  operations_from.AppendRotate(0, 0, 1, 180);
+
+  TransformOperations operations_to;
+  operations_to.AppendRotate(0, 0, -1, 180);
+
+  double progress = 0.5;
+
+  WebTransformationMatrix expected;
+
+  EXPECT_TRANSFORMATION_MATRIX_EQ(
+      expected, operations_to.Blend(operations_from, progress));
+}
+
+TEST(TransformOperationTest, LargeRotationsWithDifferentAxes) {
+  TransformOperations operations_from;
+  operations_from.AppendRotate(0, 0, 1, 180);
+
+  TransformOperations operations_to;
+  operations_to.AppendRotate(0, 1, 0, 180);
+
+  double progress = 0.5;
+  WebTransformationMatrix matrix_from;
+  matrix_from.rotate3d(0, 0, 1, 180);
+
+  WebTransformationMatrix matrix_to;
+  matrix_to.rotate3d(0, 1, 0, 180);
+
+  WebTransformationMatrix expected = matrix_to;
+  expected.blend(matrix_from, progress);
+
+  EXPECT_TRANSFORMATION_MATRIX_EQ(
+      expected, operations_to.Blend(operations_from, progress));
+}
+
+TEST(TransformOperationTest, BlendRotationFromIdentity) {
+  ScopedVector<TransformOperations> identity_operations;
+  GetIdentityOperations(&identity_operations);
+
+  for (size_t i = 0; i < identity_operations.size(); ++i) {
+    TransformOperations operations;
+    operations.AppendRotate(0, 0, 1, 360);
+
+    double progress = 0.5;
+
+    WebTransformationMatrix expected;
+    expected.rotate3d(0, 0, 1, 180);
+
+    EXPECT_TRANSFORMATION_MATRIX_EQ(
+        expected, operations.Blend(*identity_operations[i], progress));
+  }
+}
+
+TEST(TransformOperationTest, BlendTranslationFromIdentity) {
+  ScopedVector<TransformOperations> identity_operations;
+  GetIdentityOperations(&identity_operations);
+
+  for (size_t i = 0; i < identity_operations.size(); ++i) {
+    TransformOperations operations;
+    operations.AppendTranslate(2, 2, 2);
+
+    double progress = 0.5;
+
+    WebTransformationMatrix expected;
+    expected.translate3d(1, 1, 1);
+
+    EXPECT_TRANSFORMATION_MATRIX_EQ(
+        expected, operations.Blend(*identity_operations[i], progress));
+  }
+}
+
+TEST(TransformOperationTest, BlendScaleFromIdentity) {
+  ScopedVector<TransformOperations> identity_operations;
+  GetIdentityOperations(&identity_operations);
+
+  for (size_t i = 0; i < identity_operations.size(); ++i) {
+    TransformOperations operations;
+    operations.AppendScale(3, 3, 3);
+
+    double progress = 0.5;
+
+    WebTransformationMatrix expected;
+    expected.scale3d(2, 2, 2);
+
+    EXPECT_TRANSFORMATION_MATRIX_EQ(
+        expected, operations.Blend(*identity_operations[i], progress));
+  }
+}
+
+TEST(TransformOperationTest, BlendSkewFromIdentity) {
+  ScopedVector<TransformOperations> identity_operations;
+  GetIdentityOperations(&identity_operations);
+
+  for (size_t i = 0; i < identity_operations.size(); ++i) {
+    TransformOperations operations;
+    operations.AppendSkew(2, 2);
+
+    double progress = 0.5;
+
+    WebTransformationMatrix expected;
+    expected.skewX(1);
+    expected.skewY(1);
+
+    EXPECT_TRANSFORMATION_MATRIX_EQ(
+        expected, operations.Blend(*identity_operations[i], progress));
+  }
+}
+
+TEST(TransformOperationTest, BlendPerspectiveFromIdentity) {
+  ScopedVector<TransformOperations> identity_operations;
+  GetIdentityOperations(&identity_operations);
+
+  for (size_t i = 0; i < identity_operations.size(); ++i) {
+    TransformOperations operations;
+    operations.AppendPerspective(1000);
+
+    double progress = 0.5;
+
+    WebTransformationMatrix expected;
+    expected.applyPerspective(500 + 0.5 * std::numeric_limits<double>::max());
+
+    EXPECT_TRANSFORMATION_MATRIX_EQ(
+        expected, operations.Blend(*identity_operations[i], progress));
+  }
+}
+
+TEST(TransformOperationTest, BlendRotationToIdentity) {
+  ScopedVector<TransformOperations> identity_operations;
+  GetIdentityOperations(&identity_operations);
+
+  for (size_t i = 0; i < identity_operations.size(); ++i) {
+    TransformOperations operations;
+    operations.AppendRotate(0, 0, 1, 360);
+
+    double progress = 0.5;
+
+    WebTransformationMatrix expected;
+    expected.rotate3d(0, 0, 1, 180);
+
+    EXPECT_TRANSFORMATION_MATRIX_EQ(
+        expected, identity_operations[i]->Blend(operations, progress));
+  }
+}
+
+TEST(TransformOperationTest, BlendTranslationToIdentity) {
+  ScopedVector<TransformOperations> identity_operations;
+  GetIdentityOperations(&identity_operations);
+
+  for (size_t i = 0; i < identity_operations.size(); ++i) {
+    TransformOperations operations;
+    operations.AppendTranslate(2, 2, 2);
+
+    double progress = 0.5;
+
+    WebTransformationMatrix expected;
+    expected.translate3d(1, 1, 1);
+
+    EXPECT_TRANSFORMATION_MATRIX_EQ(
+        expected, identity_operations[i]->Blend(operations, progress));
+  }
+}
+
+TEST(TransformOperationTest, BlendScaleToIdentity) {
+  ScopedVector<TransformOperations> identity_operations;
+  GetIdentityOperations(&identity_operations);
+
+  for (size_t i = 0; i < identity_operations.size(); ++i) {
+    TransformOperations operations;
+    operations.AppendScale(3, 3, 3);
+
+    double progress = 0.5;
+
+    WebTransformationMatrix expected;
+    expected.scale3d(2, 2, 2);
+
+    EXPECT_TRANSFORMATION_MATRIX_EQ(
+        expected, identity_operations[i]->Blend(operations, progress));
+  }
+}
+
+TEST(TransformOperationTest, BlendSkewToIdentity) {
+  ScopedVector<TransformOperations> identity_operations;
+  GetIdentityOperations(&identity_operations);
+
+  for (size_t i = 0; i < identity_operations.size(); ++i) {
+    TransformOperations operations;
+    operations.AppendSkew(2, 2);
+
+    double progress = 0.5;
+
+    WebTransformationMatrix expected;
+    expected.skewX(1);
+    expected.skewY(1);
+
+    EXPECT_TRANSFORMATION_MATRIX_EQ(
+        expected, identity_operations[i]->Blend(operations, progress));
+  }
+}
+
+TEST(TransformOperationTest, BlendPerspectiveToIdentity) {
+  ScopedVector<TransformOperations> identity_operations;
+  GetIdentityOperations(&identity_operations);
+
+  for (size_t i = 0; i < identity_operations.size(); ++i) {
+    TransformOperations operations;
+    operations.AppendPerspective(1000);
+
+    double progress = 0.5;
+
+    WebTransformationMatrix expected;
+    expected.applyPerspective(500 + 0.5 * std::numeric_limits<double>::max());
+
+    EXPECT_TRANSFORMATION_MATRIX_EQ(
+        expected, identity_operations[i]->Blend(operations, progress));
+  }
+}
+
+}  // namespace
+}  // namespace cc