mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Andres Suarez
8bd3edec88
Reviewed By: aaronabramov Differential Revision: D33367752 fbshipit-source-id: 4ce94d184485e5ee0a62cf67ad2d3ba16e285c8f
70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include <react/renderer/graphics/Transform.h>
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#include <gtest/gtest.h>
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#include <cmath>
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using namespace facebook::react;
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TEST(TransformTest, transformingSize) {
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auto size = facebook::react::Size{100, 200};
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auto scaledSize = size * Transform::Scale(0.5, 0.5, 1);
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EXPECT_EQ(scaledSize.width, 50);
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EXPECT_EQ(scaledSize.height, 100);
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}
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TEST(TransformTest, transformingPoint) {
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auto point = facebook::react::Point{100, 200};
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auto translatedPoint = point * Transform::Translate(-50, -100, 0);
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EXPECT_EQ(translatedPoint.x, 50);
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EXPECT_EQ(translatedPoint.y, 100);
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}
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TEST(TransformTest, scalingRect) {
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auto point = facebook::react::Point{100, 200};
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auto size = facebook::react::Size{300, 400};
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auto rect = facebook::react::Rect{point, size};
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auto transformedRect = rect * Transform::Scale(0.5, 0.5, 1);
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EXPECT_EQ(transformedRect.origin.x, 175);
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EXPECT_EQ(transformedRect.origin.y, 300);
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EXPECT_EQ(transformedRect.size.width, 150);
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EXPECT_EQ(transformedRect.size.height, 200);
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}
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TEST(TransformTest, rotatingRect) {
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auto point = facebook::react::Point{10, 10};
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auto size = facebook::react::Size{10, 10};
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auto rect = facebook::react::Rect{point, size};
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auto transformedRect = rect * Transform::RotateZ(M_PI_4);
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ASSERT_NEAR(transformedRect.origin.x, 7.9289, 0.0001);
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ASSERT_NEAR(transformedRect.origin.y, 7.9289, 0.0001);
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ASSERT_NEAR(transformedRect.size.width, 14.1421, 0.0001);
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ASSERT_NEAR(transformedRect.size.height, 14.1421, 0.0001);
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}
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TEST(TransformTest, scalingAndTranslatingRect) {
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auto point = facebook::react::Point{100, 200};
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auto size = facebook::react::Size{300, 400};
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auto rect = facebook::react::Rect{point, size};
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auto transformedRect =
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rect * Transform::Scale(0.5, 0.5, 1) * Transform::Translate(1, 1, 0);
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EXPECT_EQ(transformedRect.origin.x, 176);
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EXPECT_EQ(transformedRect.origin.y, 301);
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EXPECT_EQ(transformedRect.size.width, 150);
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EXPECT_EQ(transformedRect.size.height, 200);
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}
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