1 2 /* 3 * Copyright 2006 The Android Open Source Project 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 #ifndef SkOperandInterpolator_DEFINED 11 #define SkOperandInterpolator_DEFINED 12 13 #include "SkDisplayType.h" 14 #include "SkInterpolator.h" 15 #include "SkOperand.h" 16 17 class SkOperandInterpolator : public SkInterpolatorBase { 18 public: 19 SkOperandInterpolator(); 20 SkOperandInterpolator(int elemCount, int frameCount, SkDisplayTypes type); 21 SkOperand* getValues() { return fValues; } 22 int getValuesCount() { return fFrameCount * fElemCount; } 23 void reset(int elemCount, int frameCount, SkDisplayTypes type); 24 25 /** Add or replace a key frame, copying the values[] data into the interpolator. 26 @param index The index of this frame (frames must be ordered by time) 27 @param time The millisecond time for this frame 28 @param values The array of values [elemCount] for this frame. The data is copied 29 into the interpolator. 30 @param blend A positive scalar specifying how to blend between this and the next key frame. 31 [0...1) is a cubic lag/log/lag blend (slow to change at the beginning and end) 32 1 is a linear blend (default) 33 (1...inf) is a cubic log/lag/log blend (fast to change at the beginning and end) 34 */ 35 bool setKeyFrame(int index, SkMSec time, const SkOperand values[], SkScalar blend = SK_Scalar1); 36 Result timeToValues(SkMSec time, SkOperand values[]) const; 37 SkDEBUGCODE(static void UnitTest();) 38 private: 39 SkDisplayTypes fType; 40 SkOperand* fValues; // pointer into fStorage 41 #ifdef SK_DEBUG 42 SkOperand(* fValuesArray)[10]; 43 #endif 44 typedef SkInterpolatorBase INHERITED; 45 }; 46 47 #endif // SkOperandInterpolator_DEFINED 48
