The Tor Browser: gfx/skia/trunk/src/animator/SkOperandInterpolator.h@a63d609f5ebe

     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  */

    10 #ifndef SkOperandInterpolator_DEFINED

    11 #define SkOperandInterpolator_DEFINED

    13 #include "SkDisplayType.h"

    14 #include "SkInterpolator.h"

    15 #include "SkOperand.h"

    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);

    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 };

    47 #endif // SkOperandInterpolator_DEFINED

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