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/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkOperandInterpolator_DEFINED
#define SkOperandInterpolator_DEFINED
#include "SkDisplayType.h"
#include "SkInterpolator.h"
#include "SkOperand.h"
class SkOperandInterpolator : public SkInterpolatorBase {
public:
SkOperandInterpolator();
SkOperandInterpolator(int elemCount, int frameCount, SkDisplayTypes type);
SkOperand* getValues() { return fValues; }
int getValuesCount() { return fFrameCount * fElemCount; }
void reset(int elemCount, int frameCount, SkDisplayTypes type);
/** Add or replace a key frame, copying the values[] data into the interpolator.
@param index The index of this frame (frames must be ordered by time)
@param time The millisecond time for this frame
@param values The array of values [elemCount] for this frame. The data is copied
into the interpolator.
@param blend A positive scalar specifying how to blend between this and the next key frame.
[0...1) is a cubic lag/log/lag blend (slow to change at the beginning and end)
1 is a linear blend (default)
(1...inf) is a cubic log/lag/log blend (fast to change at the beginning and end)
*/
bool setKeyFrame(int index, SkMSec time, const SkOperand values[], SkScalar blend = SK_Scalar1);
Result timeToValues(SkMSec time, SkOperand values[]) const;
SkDEBUGCODE(static void UnitTest();)
private:
SkDisplayTypes fType;
SkOperand* fValues; // pointer into fStorage
#ifdef SK_DEBUG
SkOperand(* fValuesArray)[10];
#endif
typedef SkInterpolatorBase INHERITED;
};
#endif // SkOperandInterpolator_DEFINED
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