blob: 45ac39afaa7c68d7e6e62aa109dbe33cd18c8f84 [file] [log] [blame]
/*
* Copyright (C) 2014 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/platform/transforms/transform_operations.h"
#include "base/stl_util.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/platform/geometry/float_box.h"
#include "third_party/blink/renderer/platform/geometry/float_box_test_helpers.h"
#include "third_party/blink/renderer/platform/transforms/identity_transform_operation.h"
#include "third_party/blink/renderer/platform/transforms/matrix_3d_transform_operation.h"
#include "third_party/blink/renderer/platform/transforms/matrix_transform_operation.h"
#include "third_party/blink/renderer/platform/transforms/perspective_transform_operation.h"
#include "third_party/blink/renderer/platform/transforms/rotate_transform_operation.h"
#include "third_party/blink/renderer/platform/transforms/scale_transform_operation.h"
#include "third_party/blink/renderer/platform/transforms/skew_transform_operation.h"
#include "third_party/blink/renderer/platform/transforms/translate_transform_operation.h"
namespace blink {
static const TransformOperations kIdentityOperations;
static void EmpiricallyTestBounds(const TransformOperations& from,
const TransformOperations& to,
const double& min_progress,
const double& max_progress) {
FloatBox box(200, 500, 100, 100, 300, 200);
FloatBox bounds;
EXPECT_TRUE(
to.BlendedBoundsForBox(box, from, min_progress, max_progress, &bounds));
bool first_time = true;
FloatBox empirical_bounds;
static const size_t kNumSteps = 10;
for (size_t step = 0; step < kNumSteps; ++step) {
float t = step / (kNumSteps - 1);
t = min_progress + (max_progress - min_progress) * t;
TransformOperations operations = from.Blend(to, t);
TransformationMatrix matrix;
operations.Apply(FloatSize(0, 0), matrix);
FloatBox transformed = box;
matrix.TransformBox(transformed);
if (first_time)
empirical_bounds = transformed;
else
empirical_bounds.UnionBounds(transformed);
first_time = false;
}
ASSERT_PRED_FORMAT2(float_box_test::AssertContains, bounds, empirical_bounds);
}
TEST(TransformOperationsTest, AbsoluteAnimatedTranslatedBoundsTest) {
TransformOperations from_ops;
TransformOperations to_ops;
from_ops.Operations().push_back(TranslateTransformOperation::Create(
Length::Fixed(-30), Length::Fixed(20), 15,
TransformOperation::kTranslate3D));
to_ops.Operations().push_back(TranslateTransformOperation::Create(
Length::Fixed(10), Length::Fixed(10), 200,
TransformOperation::kTranslate3D));
FloatBox box(0, 0, 0, 10, 10, 10);
FloatBox bounds;
EXPECT_TRUE(
to_ops.BlendedBoundsForBox(box, kIdentityOperations, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(0, 0, 0, 20, 20, 210), bounds);
EXPECT_TRUE(
kIdentityOperations.BlendedBoundsForBox(box, to_ops, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(0, 0, 0, 20, 20, 210), bounds);
EXPECT_TRUE(
kIdentityOperations.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(-30, 0, 0, 40, 30, 25), bounds);
EXPECT_TRUE(to_ops.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(-30, 10, 15, 50, 20, 195), bounds);
EXPECT_TRUE(to_ops.BlendedBoundsForBox(box, from_ops, -0.5, 1.25, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(-50, 7.5, -77.5, 80, 27.5, 333.75), bounds);
}
TEST(TransformOperationsTest, EmpiricalAnimatedTranslatedBoundsTest) {
float test_transforms[][2][3] = {{{0, 0, 0}, {10, 10, 0}},
{{-100, 202.5, -32.6}, {43.2, 56.1, 89.75}},
{{43.2, 56.1, 89.75}, {-100, 202.5, -32.6}}};
// All progressions for animations start and end at 0, 1 respectively,
// we can go outside of these bounds, but will always at least contain
// [0,1].
float progress[][2] = {{0, 1}, {-.25, 1.25}};
for (size_t i = 0; i < base::size(test_transforms); ++i) {
for (size_t j = 0; j < base::size(progress); ++j) {
TransformOperations from_ops;
TransformOperations to_ops;
from_ops.Operations().push_back(TranslateTransformOperation::Create(
Length::Fixed(test_transforms[i][0][0]),
Length::Fixed(test_transforms[i][0][1]), test_transforms[i][0][2],
TransformOperation::kTranslate3D));
to_ops.Operations().push_back(TranslateTransformOperation::Create(
Length::Fixed(test_transforms[i][1][0]),
Length::Fixed(test_transforms[i][1][1]), test_transforms[i][1][2],
TransformOperation::kTranslate3D));
EmpiricallyTestBounds(from_ops, to_ops, progress[j][0], progress[j][1]);
}
}
}
TEST(TransformOperationsTest, AbsoluteAnimatedScaleBoundsTest) {
TransformOperations from_ops;
TransformOperations to_ops;
from_ops.Operations().push_back(
ScaleTransformOperation::Create(4, -3, TransformOperation::kScale));
to_ops.Operations().push_back(
ScaleTransformOperation::Create(5, 2, TransformOperation::kScale));
FloatBox box(0, 0, 0, 10, 10, 10);
FloatBox bounds;
EXPECT_TRUE(
to_ops.BlendedBoundsForBox(box, kIdentityOperations, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(0, 0, 0, 50, 20, 10), bounds);
EXPECT_TRUE(
kIdentityOperations.BlendedBoundsForBox(box, to_ops, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(0, 0, 0, 50, 20, 10), bounds);
EXPECT_TRUE(
kIdentityOperations.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(0, -30, 0, 40, 40, 10), bounds);
EXPECT_TRUE(to_ops.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(0, -30, 0, 50, 50, 10), bounds);
EXPECT_TRUE(to_ops.BlendedBoundsForBox(box, from_ops, -0.5, 1.25, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(0, -55, 0, 52.5, 87.5, 10), bounds);
}
TEST(TransformOperationsTest, EmpiricalAnimatedScaleBoundsTest) {
float test_transforms[][2][3] = {{{1, 1, 1}, {10, 10, -32}},
{{1, 2, 5}, {-1, -2, -4}},
{{0, 0, 0}, {1, 2, 3}},
{{0, 0, 0}, {0, 0, 0}}};
// All progressions for animations start and end at 0, 1 respectively,
// we can go outside of these bounds, but will always at least contain
// [0,1].
float progress[][2] = {{0, 1}, {-.25f, 1.25f}};
for (size_t i = 0; i < base::size(test_transforms); ++i) {
for (size_t j = 0; j < base::size(progress); ++j) {
TransformOperations from_ops;
TransformOperations to_ops;
from_ops.Operations().push_back(TranslateTransformOperation::Create(
Length::Fixed(test_transforms[i][0][0]),
Length::Fixed(test_transforms[i][0][1]), test_transforms[i][0][2],
TransformOperation::kTranslate3D));
to_ops.Operations().push_back(TranslateTransformOperation::Create(
Length::Fixed(test_transforms[i][1][0]),
Length::Fixed(test_transforms[i][1][1]), test_transforms[i][1][2],
TransformOperation::kTranslate3D));
EmpiricallyTestBounds(from_ops, to_ops, progress[j][0], progress[j][1]);
}
}
}
TEST(TransformOperationsTest, AbsoluteAnimatedRotationBounds) {
TransformOperations from_ops;
TransformOperations to_ops;
from_ops.Operations().push_back(
RotateTransformOperation::Create(0, TransformOperation::kRotate));
to_ops.Operations().push_back(
RotateTransformOperation::Create(360, TransformOperation::kRotate));
float sqrt2 = sqrt(2.0f);
FloatBox box(-sqrt2, -sqrt2, 0, sqrt2, sqrt2, 0);
FloatBox bounds;
// Since we're rotating 360 degrees, any box with dimensions between 0 and
// 2 * sqrt(2) should give the same result.
float sizes[] = {0, 0.1f, sqrt2, 2 * sqrt2};
to_ops.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds);
for (size_t i = 0; i < base::size(sizes); ++i) {
box.SetSize(FloatPoint3D(sizes[i], sizes[i], 0));
EXPECT_TRUE(to_ops.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(-2, -2, 0, 4, 4, 0), bounds);
}
}
TEST(TransformOperationsTest, AbsoluteAnimatedExtremeRotationBounds) {
// If the normal is off-plane, we can have up to 6 exrema (min/max in each
// dimension between) the endpoints of the arg. This makes sure we are
// catching all 6.
TransformOperations from_ops;
TransformOperations to_ops;
from_ops.Operations().push_back(RotateTransformOperation::Create(
1, 1, 1, 30, TransformOperation::kRotate3D));
to_ops.Operations().push_back(RotateTransformOperation::Create(
1, 1, 1, 390, TransformOperation::kRotate3D));
FloatBox box(1, 0, 0, 0, 0, 0);
FloatBox bounds;
float min = -1 / 3.0f;
float max = 1;
float size = max - min;
EXPECT_TRUE(to_ops.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(min, min, min, size, size, size), bounds);
}
TEST(TransformOperationsTest, AbsoluteAnimatedAxisRotationBounds) {
// We can handle rotations about a single axis. If the axes are different,
// we revert to matrix interpolation for which inflated bounds cannot be
// computed.
TransformOperations from_ops;
TransformOperations to_same;
TransformOperations to_opposite;
TransformOperations to_different;
from_ops.Operations().push_back(RotateTransformOperation::Create(
1, 1, 1, 30, TransformOperation::kRotate3D));
to_same.Operations().push_back(RotateTransformOperation::Create(
1, 1, 1, 390, TransformOperation::kRotate3D));
to_opposite.Operations().push_back(RotateTransformOperation::Create(
-1, -1, -1, 390, TransformOperation::kRotate3D));
to_different.Operations().push_back(RotateTransformOperation::Create(
1, 3, 1, 390, TransformOperation::kRotate3D));
FloatBox box(1, 0, 0, 0, 0, 0);
FloatBox bounds;
EXPECT_TRUE(to_same.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
EXPECT_FALSE(to_opposite.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
EXPECT_FALSE(to_different.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
}
TEST(TransformOperationsTest, AbsoluteAnimatedOnAxisRotationBounds) {
// If we rotate a point that is on the axis of rotation, the box should not
// change at all.
TransformOperations from_ops;
TransformOperations to_ops;
from_ops.Operations().push_back(RotateTransformOperation::Create(
1, 1, 1, 30, TransformOperation::kRotate3D));
to_ops.Operations().push_back(RotateTransformOperation::Create(
1, 1, 1, 390, TransformOperation::kRotate3D));
FloatBox box(1, 1, 1, 0, 0, 0);
FloatBox bounds;
EXPECT_TRUE(to_ops.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual, box, bounds);
}
// This would have been best as anonymous structs, but |base::size|
// does not get along with anonymous structs once we support C++11
// base::size will automatically support anonymous structs.
struct ProblematicAxisTest {
double x;
double y;
double z;
FloatBox expected;
};
TEST(TransformOperationsTest, AbsoluteAnimatedProblematicAxisRotationBounds) {
// Zeros in the components of the axis of rotation turned out to be tricky to
// deal with in practice. This function tests some potentially problematic
// axes to ensure sane behavior.
// Some common values used in the expected boxes.
float dim1 = 0.292893f;
float dim2 = sqrt(2.0f);
float dim3 = 2 * dim2;
ProblematicAxisTest tests[] = {
{0, 0, 0, FloatBox(1, 1, 1, 0, 0, 0)},
{1, 0, 0, FloatBox(1, -dim2, -dim2, 0, dim3, dim3)},
{0, 1, 0, FloatBox(-dim2, 1, -dim2, dim3, 0, dim3)},
{0, 0, 1, FloatBox(-dim2, -dim2, 1, dim3, dim3, 0)},
{1, 1, 0, FloatBox(dim1, dim1, -1, dim2, dim2, 2)},
{0, 1, 1, FloatBox(-1, dim1, dim1, 2, dim2, dim2)},
{1, 0, 1, FloatBox(dim1, -1, dim1, dim2, 2, dim2)}};
for (size_t i = 0; i < base::size(tests); ++i) {
float x = tests[i].x;
float y = tests[i].y;
float z = tests[i].z;
TransformOperations from_ops;
from_ops.Operations().push_back(RotateTransformOperation::Create(
x, y, z, 0, TransformOperation::kRotate3D));
TransformOperations to_ops;
to_ops.Operations().push_back(RotateTransformOperation::Create(
x, y, z, 360, TransformOperation::kRotate3D));
FloatBox box(1, 1, 1, 0, 0, 0);
FloatBox bounds;
EXPECT_TRUE(to_ops.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual, tests[i].expected,
bounds);
}
}
TEST(TransformOperationsTest, BlendedBoundsForRotationEmpiricalTests) {
float axes[][3] = {{1, 1, 1}, {-1, -1, -1}, {-1, 2, 3}, {1, -2, 3},
{0, 0, 0}, {1, 0, 0}, {0, 1, 0}, {0, 0, 1},
{1, 1, 0}, {0, 1, 1}, {1, 0, 1}, {-1, 0, 0},
{0, -1, 0}, {0, 0, -1}, {-1, -1, 0}, {0, -1, -1},
{-1, 0, -1}};
float angles[][2] = {{5, 100}, {10, 5}, {0, 360}, {20, 180},
{-20, -180}, {180, -220}, {220, 320}, {1020, 1120},
{-3200, 120}, {-9000, -9050}};
float progress[][2] = {{0, 1}, {-0.25f, 1.25f}};
for (size_t i = 0; i < base::size(axes); ++i) {
for (size_t j = 0; j < base::size(angles); ++j) {
for (size_t k = 0; k < base::size(progress); ++k) {
float x = axes[i][0];
float y = axes[i][1];
float z = axes[i][2];
TransformOperations from_ops;
TransformOperations to_ops;
from_ops.Operations().push_back(RotateTransformOperation::Create(
x, y, z, angles[j][0], TransformOperation::kRotate3D));
to_ops.Operations().push_back(RotateTransformOperation::Create(
x, y, z, angles[j][1], TransformOperation::kRotate3D));
EmpiricallyTestBounds(from_ops, to_ops, progress[k][0], progress[k][1]);
}
}
}
}
TEST(TransformOperationsTest, AbsoluteAnimatedPerspectiveBoundsTest) {
TransformOperations from_ops;
TransformOperations to_ops;
from_ops.Operations().push_back(PerspectiveTransformOperation::Create(20));
to_ops.Operations().push_back(PerspectiveTransformOperation::Create(40));
FloatBox box(0, 0, 0, 10, 10, 10);
FloatBox bounds;
to_ops.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds);
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(0, 0, 0, 20, 20, 20), bounds);
from_ops.BlendedBoundsForBox(box, to_ops, -0.25, 1.25, &bounds);
// The perspective range was [20, 40] and blending will extrapolate that to
// [17, 53]. The cube has w/h/d of 10 and the observer is at 17, so the face
// closest the observer is 17-10=7.
double projected_size = 10.0 / 7.0 * 17.0;
EXPECT_PRED_FORMAT2(
float_box_test::AssertAlmostEqual,
FloatBox(0, 0, 0, projected_size, projected_size, projected_size),
bounds);
}
TEST(TransformOperationsTest, EmpiricalAnimatedPerspectiveBoundsTest) {
float depths[][2] = {
{600, 400}, {800, 1000}, {800, std::numeric_limits<float>::infinity()}};
float progress[][2] = {{0, 1}, {-0.1f, 1.1f}};
for (size_t i = 0; i < base::size(depths); ++i) {
for (size_t j = 0; j < base::size(progress); ++j) {
TransformOperations from_ops;
TransformOperations to_ops;
from_ops.Operations().push_back(
PerspectiveTransformOperation::Create(depths[i][0]));
to_ops.Operations().push_back(
PerspectiveTransformOperation::Create(depths[i][1]));
EmpiricallyTestBounds(from_ops, to_ops, progress[j][0], progress[j][1]);
}
}
}
TEST(TransformOperationsTest, AnimatedSkewBoundsTest) {
TransformOperations from_ops;
TransformOperations to_ops;
from_ops.Operations().push_back(
SkewTransformOperation::Create(-45, 0, TransformOperation::kSkew));
to_ops.Operations().push_back(
SkewTransformOperation::Create(0, 45, TransformOperation::kSkew));
FloatBox box(0, 0, 0, 10, 10, 10);
FloatBox bounds;
to_ops.BlendedBoundsForBox(box, kIdentityOperations, 0, 1, &bounds);
ASSERT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(0, 0, 0, 10, 20, 10), bounds);
kIdentityOperations.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds);
ASSERT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(-10, 0, 0, 20, 10, 10), bounds);
to_ops.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds);
ASSERT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(-10, 0, 0, 20, 20, 10), bounds);
from_ops.BlendedBoundsForBox(box, to_ops, 0, 1, &bounds);
ASSERT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(-10, 0, 0, 20, 20, 10), bounds);
}
TEST(TransformOperationsTest, NonCommutativeRotations) {
TransformOperations from_ops;
from_ops.Operations().push_back(RotateTransformOperation::Create(
1, 0, 0, 0, TransformOperation::kRotate3D));
from_ops.Operations().push_back(RotateTransformOperation::Create(
0, 1, 0, 0, TransformOperation::kRotate3D));
TransformOperations to_ops;
to_ops.Operations().push_back(RotateTransformOperation::Create(
1, 0, 0, 45, TransformOperation::kRotate3D));
to_ops.Operations().push_back(RotateTransformOperation::Create(
0, 1, 0, 135, TransformOperation::kRotate3D));
FloatBox box(0, 0, 0, 1, 1, 1);
FloatBox bounds;
double min_progress = 0;
double max_progress = 1;
EXPECT_TRUE(to_ops.BlendedBoundsForBox(box, from_ops, min_progress,
max_progress, &bounds));
TransformOperations operations = to_ops.Blend(from_ops, max_progress);
TransformationMatrix blended_transform;
operations.Apply(FloatSize(0, 0), blended_transform);
FloatPoint3D blended_point(0.9f, 0.9f, 0);
blended_point = blended_transform.MapPoint(blended_point);
FloatBox expanded_bounds = bounds;
expanded_bounds.ExpandTo(blended_point);
ASSERT_PRED_FORMAT2(float_box_test::AssertAlmostEqual, bounds,
expanded_bounds);
}
TEST(TransformOperationsTest, AbsoluteSequenceBoundsTest) {
TransformOperations from_ops;
TransformOperations to_ops;
from_ops.Operations().push_back(
TranslateTransformOperation::Create(Length::Fixed(1), Length::Fixed(-5),
1, TransformOperation::kTranslate3D));
from_ops.Operations().push_back(
ScaleTransformOperation::Create(-1, 2, 3, TransformOperation::kScale3D));
from_ops.Operations().push_back(TranslateTransformOperation::Create(
Length::Fixed(2), Length::Fixed(4), -1,
TransformOperation::kTranslate3D));
to_ops.Operations().push_back(
TranslateTransformOperation::Create(Length::Fixed(13), Length::Fixed(-1),
5, TransformOperation::kTranslate3D));
to_ops.Operations().push_back(
ScaleTransformOperation::Create(-3, -2, 5, TransformOperation::kScale3D));
to_ops.Operations().push_back(
TranslateTransformOperation::Create(Length::Fixed(6), Length::Fixed(-2),
3, TransformOperation::kTranslate3D));
FloatBox box(1, 2, 3, 4, 4, 4);
FloatBox bounds;
EXPECT_TRUE(to_ops.BlendedBoundsForBox(box, from_ops, -0.5, 1.5, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(-57, -59, -1, 76, 112, 80), bounds);
EXPECT_TRUE(to_ops.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(-32, -25, 7, 42, 44, 48), bounds);
EXPECT_TRUE(
to_ops.BlendedBoundsForBox(box, kIdentityOperations, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(-33, -13, 3, 57, 19, 52), bounds);
EXPECT_TRUE(
kIdentityOperations.BlendedBoundsForBox(box, from_ops, 0, 1, &bounds));
EXPECT_PRED_FORMAT2(float_box_test::AssertAlmostEqual,
FloatBox(-7, -3, 2, 15, 23, 20), bounds);
}
TEST(TransformOperationsTest, ZoomTest) {
double zoom_factor = 1.25;
FloatPoint3D original_point(2, 3, 4);
TransformOperations ops;
ops.Operations().push_back(TranslateTransformOperation::Create(
Length::Fixed(1), Length::Fixed(2), 3, TransformOperation::kTranslate3D));
ops.Operations().push_back(PerspectiveTransformOperation::Create(1234));
ops.Operations().push_back(
Matrix3DTransformOperation::Create(TransformationMatrix(
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)));
// Apply unzoomed ops to unzoomed units, then zoom in
FloatPoint3D unzoomed_point = original_point;
TransformOperations unzoomed_ops = ops;
TransformationMatrix unzoomed_matrix;
ops.Apply(FloatSize(0, 0), unzoomed_matrix);
FloatPoint3D result1 = unzoomed_matrix.MapPoint(unzoomed_point);
result1.Scale(zoom_factor, zoom_factor, zoom_factor);
// Apply zoomed ops to zoomed units
FloatPoint3D zoomed_point = original_point;
zoomed_point.Scale(zoom_factor, zoom_factor, zoom_factor);
TransformOperations zoomed_ops = ops.Zoom(zoom_factor);
TransformationMatrix zoomed_matrix;
zoomed_ops.Apply(FloatSize(0, 0), zoomed_matrix);
FloatPoint3D result2 = zoomed_matrix.MapPoint(zoomed_point);
EXPECT_EQ(result1, result2);
}
} // namespace blink