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