136 lines
3.3 KiB
C++
136 lines
3.3 KiB
C++
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef INTERPOLATOR_H
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#define INTERPOLATOR_H
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#include <stddef.h>
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#include <memory>
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#include <cutils/compiler.h>
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#include <vector>
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namespace android {
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namespace uirenderer {
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class Interpolator {
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public:
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virtual ~Interpolator() {}
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virtual float interpolate(float input) = 0;
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static Interpolator* createDefaultInterpolator();
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protected:
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Interpolator() {}
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};
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class AccelerateDecelerateInterpolator : public Interpolator {
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public:
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virtual float interpolate(float input) override;
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};
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class AccelerateInterpolator : public Interpolator {
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public:
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explicit AccelerateInterpolator(float factor) : mFactor(factor), mDoubleFactor(factor * 2) {}
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virtual float interpolate(float input) override;
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private:
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const float mFactor;
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const float mDoubleFactor;
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};
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class AnticipateInterpolator : public Interpolator {
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public:
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explicit AnticipateInterpolator(float tension) : mTension(tension) {}
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virtual float interpolate(float input) override;
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private:
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const float mTension;
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};
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class AnticipateOvershootInterpolator : public Interpolator {
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public:
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explicit AnticipateOvershootInterpolator(float tension) : mTension(tension) {}
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virtual float interpolate(float input) override;
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private:
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const float mTension;
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};
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class BounceInterpolator : public Interpolator {
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public:
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virtual float interpolate(float input) override;
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};
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class CycleInterpolator : public Interpolator {
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public:
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explicit CycleInterpolator(float cycles) : mCycles(cycles) {}
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virtual float interpolate(float input) override;
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private:
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const float mCycles;
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};
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class DecelerateInterpolator : public Interpolator {
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public:
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explicit DecelerateInterpolator(float factor) : mFactor(factor) {}
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virtual float interpolate(float input) override;
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private:
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const float mFactor;
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};
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class LinearInterpolator : public Interpolator {
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public:
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virtual float interpolate(float input) override { return input; }
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};
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class OvershootInterpolator : public Interpolator {
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public:
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explicit OvershootInterpolator(float tension) : mTension(tension) {}
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virtual float interpolate(float input) override;
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private:
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const float mTension;
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};
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class PathInterpolator : public Interpolator {
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public:
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explicit PathInterpolator(std::vector<float>&& x, std::vector<float>&& y) : mX(x), mY(y) {}
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virtual float interpolate(float input) override;
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private:
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std::vector<float> mX;
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std::vector<float> mY;
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};
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class LUTInterpolator : public Interpolator {
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public:
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LUTInterpolator(float* values, size_t size);
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~LUTInterpolator();
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virtual float interpolate(float input) override;
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private:
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std::unique_ptr<float[]> mValues;
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size_t mSize;
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};
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} /* namespace uirenderer */
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} /* namespace android */
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#endif /* INTERPOLATOR_H */
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