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