1*d57664e9SAndroid Build Coastguard Worker /* 2*d57664e9SAndroid Build Coastguard Worker * Copyright (C) 2014 The Android Open Source Project 3*d57664e9SAndroid Build Coastguard Worker * 4*d57664e9SAndroid Build Coastguard Worker * Licensed under the Apache License, Version 2.0 (the "License"); 5*d57664e9SAndroid Build Coastguard Worker * you may not use this file except in compliance with the License. 6*d57664e9SAndroid Build Coastguard Worker * You may obtain a copy of the License at 7*d57664e9SAndroid Build Coastguard Worker * 8*d57664e9SAndroid Build Coastguard Worker * http://www.apache.org/licenses/LICENSE-2.0 9*d57664e9SAndroid Build Coastguard Worker * 10*d57664e9SAndroid Build Coastguard Worker * Unless required by applicable law or agreed to in writing, software 11*d57664e9SAndroid Build Coastguard Worker * distributed under the License is distributed on an "AS IS" BASIS, 12*d57664e9SAndroid Build Coastguard Worker * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13*d57664e9SAndroid Build Coastguard Worker * See the License for the specific language governing permissions and 14*d57664e9SAndroid Build Coastguard Worker * limitations under the License. 15*d57664e9SAndroid Build Coastguard Worker */ 16*d57664e9SAndroid Build Coastguard Worker #ifndef INTERPOLATOR_H 17*d57664e9SAndroid Build Coastguard Worker #define INTERPOLATOR_H 18*d57664e9SAndroid Build Coastguard Worker 19*d57664e9SAndroid Build Coastguard Worker #include <stddef.h> 20*d57664e9SAndroid Build Coastguard Worker #include <memory> 21*d57664e9SAndroid Build Coastguard Worker 22*d57664e9SAndroid Build Coastguard Worker #include <cutils/compiler.h> 23*d57664e9SAndroid Build Coastguard Worker #include <vector> 24*d57664e9SAndroid Build Coastguard Worker 25*d57664e9SAndroid Build Coastguard Worker namespace android { 26*d57664e9SAndroid Build Coastguard Worker namespace uirenderer { 27*d57664e9SAndroid Build Coastguard Worker 28*d57664e9SAndroid Build Coastguard Worker class Interpolator { 29*d57664e9SAndroid Build Coastguard Worker public: ~Interpolator()30*d57664e9SAndroid Build Coastguard Worker virtual ~Interpolator() {} 31*d57664e9SAndroid Build Coastguard Worker 32*d57664e9SAndroid Build Coastguard Worker virtual float interpolate(float input) = 0; 33*d57664e9SAndroid Build Coastguard Worker 34*d57664e9SAndroid Build Coastguard Worker static Interpolator* createDefaultInterpolator(); 35*d57664e9SAndroid Build Coastguard Worker 36*d57664e9SAndroid Build Coastguard Worker protected: Interpolator()37*d57664e9SAndroid Build Coastguard Worker Interpolator() {} 38*d57664e9SAndroid Build Coastguard Worker }; 39*d57664e9SAndroid Build Coastguard Worker 40*d57664e9SAndroid Build Coastguard Worker class AccelerateDecelerateInterpolator : public Interpolator { 41*d57664e9SAndroid Build Coastguard Worker public: 42*d57664e9SAndroid Build Coastguard Worker virtual float interpolate(float input) override; 43*d57664e9SAndroid Build Coastguard Worker }; 44*d57664e9SAndroid Build Coastguard Worker 45*d57664e9SAndroid Build Coastguard Worker class AccelerateInterpolator : public Interpolator { 46*d57664e9SAndroid Build Coastguard Worker public: AccelerateInterpolator(float factor)47*d57664e9SAndroid Build Coastguard Worker explicit AccelerateInterpolator(float factor) : mFactor(factor), mDoubleFactor(factor * 2) {} 48*d57664e9SAndroid Build Coastguard Worker virtual float interpolate(float input) override; 49*d57664e9SAndroid Build Coastguard Worker 50*d57664e9SAndroid Build Coastguard Worker private: 51*d57664e9SAndroid Build Coastguard Worker const float mFactor; 52*d57664e9SAndroid Build Coastguard Worker const float mDoubleFactor; 53*d57664e9SAndroid Build Coastguard Worker }; 54*d57664e9SAndroid Build Coastguard Worker 55*d57664e9SAndroid Build Coastguard Worker class AnticipateInterpolator : public Interpolator { 56*d57664e9SAndroid Build Coastguard Worker public: AnticipateInterpolator(float tension)57*d57664e9SAndroid Build Coastguard Worker explicit AnticipateInterpolator(float tension) : mTension(tension) {} 58*d57664e9SAndroid Build Coastguard Worker virtual float interpolate(float input) override; 59*d57664e9SAndroid Build Coastguard Worker 60*d57664e9SAndroid Build Coastguard Worker private: 61*d57664e9SAndroid Build Coastguard Worker const float mTension; 62*d57664e9SAndroid Build Coastguard Worker }; 63*d57664e9SAndroid Build Coastguard Worker 64*d57664e9SAndroid Build Coastguard Worker class AnticipateOvershootInterpolator : public Interpolator { 65*d57664e9SAndroid Build Coastguard Worker public: AnticipateOvershootInterpolator(float tension)66*d57664e9SAndroid Build Coastguard Worker explicit AnticipateOvershootInterpolator(float tension) : mTension(tension) {} 67*d57664e9SAndroid Build Coastguard Worker virtual float interpolate(float input) override; 68*d57664e9SAndroid Build Coastguard Worker 69*d57664e9SAndroid Build Coastguard Worker private: 70*d57664e9SAndroid Build Coastguard Worker const float mTension; 71*d57664e9SAndroid Build Coastguard Worker }; 72*d57664e9SAndroid Build Coastguard Worker 73*d57664e9SAndroid Build Coastguard Worker class BounceInterpolator : public Interpolator { 74*d57664e9SAndroid Build Coastguard Worker public: 75*d57664e9SAndroid Build Coastguard Worker virtual float interpolate(float input) override; 76*d57664e9SAndroid Build Coastguard Worker }; 77*d57664e9SAndroid Build Coastguard Worker 78*d57664e9SAndroid Build Coastguard Worker class CycleInterpolator : public Interpolator { 79*d57664e9SAndroid Build Coastguard Worker public: CycleInterpolator(float cycles)80*d57664e9SAndroid Build Coastguard Worker explicit CycleInterpolator(float cycles) : mCycles(cycles) {} 81*d57664e9SAndroid Build Coastguard Worker virtual float interpolate(float input) override; 82*d57664e9SAndroid Build Coastguard Worker 83*d57664e9SAndroid Build Coastguard Worker private: 84*d57664e9SAndroid Build Coastguard Worker const float mCycles; 85*d57664e9SAndroid Build Coastguard Worker }; 86*d57664e9SAndroid Build Coastguard Worker 87*d57664e9SAndroid Build Coastguard Worker class DecelerateInterpolator : public Interpolator { 88*d57664e9SAndroid Build Coastguard Worker public: DecelerateInterpolator(float factor)89*d57664e9SAndroid Build Coastguard Worker explicit DecelerateInterpolator(float factor) : mFactor(factor) {} 90*d57664e9SAndroid Build Coastguard Worker virtual float interpolate(float input) override; 91*d57664e9SAndroid Build Coastguard Worker 92*d57664e9SAndroid Build Coastguard Worker private: 93*d57664e9SAndroid Build Coastguard Worker const float mFactor; 94*d57664e9SAndroid Build Coastguard Worker }; 95*d57664e9SAndroid Build Coastguard Worker 96*d57664e9SAndroid Build Coastguard Worker class LinearInterpolator : public Interpolator { 97*d57664e9SAndroid Build Coastguard Worker public: interpolate(float input)98*d57664e9SAndroid Build Coastguard Worker virtual float interpolate(float input) override { return input; } 99*d57664e9SAndroid Build Coastguard Worker }; 100*d57664e9SAndroid Build Coastguard Worker 101*d57664e9SAndroid Build Coastguard Worker class OvershootInterpolator : public Interpolator { 102*d57664e9SAndroid Build Coastguard Worker public: OvershootInterpolator(float tension)103*d57664e9SAndroid Build Coastguard Worker explicit OvershootInterpolator(float tension) : mTension(tension) {} 104*d57664e9SAndroid Build Coastguard Worker virtual float interpolate(float input) override; 105*d57664e9SAndroid Build Coastguard Worker 106*d57664e9SAndroid Build Coastguard Worker private: 107*d57664e9SAndroid Build Coastguard Worker const float mTension; 108*d57664e9SAndroid Build Coastguard Worker }; 109*d57664e9SAndroid Build Coastguard Worker 110*d57664e9SAndroid Build Coastguard Worker class PathInterpolator : public Interpolator { 111*d57664e9SAndroid Build Coastguard Worker public: PathInterpolator(std::vector<float> && x,std::vector<float> && y)112*d57664e9SAndroid Build Coastguard Worker explicit PathInterpolator(std::vector<float>&& x, std::vector<float>&& y) : mX(x), mY(y) {} 113*d57664e9SAndroid Build Coastguard Worker virtual float interpolate(float input) override; 114*d57664e9SAndroid Build Coastguard Worker 115*d57664e9SAndroid Build Coastguard Worker private: 116*d57664e9SAndroid Build Coastguard Worker std::vector<float> mX; 117*d57664e9SAndroid Build Coastguard Worker std::vector<float> mY; 118*d57664e9SAndroid Build Coastguard Worker }; 119*d57664e9SAndroid Build Coastguard Worker 120*d57664e9SAndroid Build Coastguard Worker class LUTInterpolator : public Interpolator { 121*d57664e9SAndroid Build Coastguard Worker public: 122*d57664e9SAndroid Build Coastguard Worker LUTInterpolator(float* values, size_t size); 123*d57664e9SAndroid Build Coastguard Worker ~LUTInterpolator(); 124*d57664e9SAndroid Build Coastguard Worker 125*d57664e9SAndroid Build Coastguard Worker virtual float interpolate(float input) override; 126*d57664e9SAndroid Build Coastguard Worker 127*d57664e9SAndroid Build Coastguard Worker private: 128*d57664e9SAndroid Build Coastguard Worker std::unique_ptr<float[]> mValues; 129*d57664e9SAndroid Build Coastguard Worker size_t mSize; 130*d57664e9SAndroid Build Coastguard Worker }; 131*d57664e9SAndroid Build Coastguard Worker 132*d57664e9SAndroid Build Coastguard Worker } /* namespace uirenderer */ 133*d57664e9SAndroid Build Coastguard Worker } /* namespace android */ 134*d57664e9SAndroid Build Coastguard Worker 135*d57664e9SAndroid Build Coastguard Worker #endif /* INTERPOLATOR_H */ 136