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95 lines
3.0 KiB
C++
95 lines
3.0 KiB
C++
/*
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* Copyright (C) 2013 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "flutter/sky/engine/platform/animation/UnitBezier.h"
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#include <gtest/gtest.h>
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using namespace blink;
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namespace {
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TEST(UnitBezierTest, BasicUse)
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{
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UnitBezier bezier(0.5, 1.0, 0.5, 1.0);
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EXPECT_EQ(0.875, bezier.solve(0.5, 0.005));
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}
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TEST(UnitBezierTest, Overshoot)
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{
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UnitBezier bezier(0.5, 2.0, 0.5, 2.0);
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EXPECT_EQ(1.625, bezier.solve(0.5, 0.005));
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}
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TEST(UnitBezierTest, Undershoot)
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{
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UnitBezier bezier(0.5, -1.0, 0.5, -1.0);
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EXPECT_EQ(-0.625, bezier.solve(0.5, 0.005));
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}
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TEST(UnitBezierTest, InputAtEdgeOfRange)
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{
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UnitBezier bezier(0.5, 1.0, 0.5, 1.0);
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EXPECT_EQ(0.0, bezier.solve(0.0, 0.005));
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EXPECT_EQ(1.0, bezier.solve(1.0, 0.005));
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}
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TEST(UnitBezierTest, InputOutOfRange)
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{
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UnitBezier bezier(0.5, 1.0, 0.5, 1.0);
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EXPECT_EQ(-2.0, bezier.solve(-1.0, 0.005));
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EXPECT_EQ(1.0, bezier.solve(2.0, 0.005));
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}
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TEST(UnitBezierTest, InputOutOfRangeLargeEpsilon)
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{
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UnitBezier bezier(0.5, 1.0, 0.5, 1.0);
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EXPECT_EQ(-2.0, bezier.solve(-1.0, 1.0));
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EXPECT_EQ(1.0, bezier.solve(2.0, 1.0));
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}
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TEST(UnitBezierTest, InputOutOfRangeCoincidentEndpoints)
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{
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UnitBezier bezier(0.0, 0.0, 1.0, 1.0);
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EXPECT_EQ(-1.0, bezier.solve(-1.0, 0.005));
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EXPECT_EQ(2.0, bezier.solve(2.0, 0.005));
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}
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TEST(UnitBezierTest, InputOutOfRangeVerticalGradient)
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{
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UnitBezier bezier(0.0, 1.0, 1.0, 0.0);
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EXPECT_EQ(0.0, bezier.solve(-1.0, 0.005));
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EXPECT_EQ(1.0, bezier.solve(2.0, 0.005));
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}
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TEST(UnitBezierTest, InputOutOfRangeDistinctEndpoints)
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{
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UnitBezier bezier(0.1, 0.2, 0.8, 0.8);
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EXPECT_EQ(-2.0, bezier.solve(-1.0, 0.005));
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EXPECT_EQ(2.0, bezier.solve(2.0, 0.005));
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}
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} // namespace
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