1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/animator/SkOperandIterpolator.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,149 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2006 The Android Open Source Project
1.7 + *
1.8 + * Use of this source code is governed by a BSD-style license that can be
1.9 + * found in the LICENSE file.
1.10 + */
1.11 +
1.12 +
1.13 +#include "SkOperandInterpolator.h"
1.14 +#include "SkScript.h"
1.15 +
1.16 +SkOperandInterpolator::SkOperandInterpolator() {
1.17 + INHERITED::reset(0, 0);
1.18 + fType = SkType_Unknown;
1.19 +}
1.20 +
1.21 +SkOperandInterpolator::SkOperandInterpolator(int elemCount, int frameCount,
1.22 + SkDisplayTypes type)
1.23 +{
1.24 + this->reset(elemCount, frameCount, type);
1.25 +}
1.26 +
1.27 +void SkOperandInterpolator::reset(int elemCount, int frameCount, SkDisplayTypes type)
1.28 +{
1.29 +// SkASSERT(type == SkType_String || type == SkType_Float || type == SkType_Int ||
1.30 +// type == SkType_Displayable || type == SkType_Drawable);
1.31 + INHERITED::reset(elemCount, frameCount);
1.32 + fType = type;
1.33 + fStorage = sk_malloc_throw((sizeof(SkOperand) * elemCount + sizeof(SkTimeCode)) * frameCount);
1.34 + fTimes = (SkTimeCode*) fStorage;
1.35 + fValues = (SkOperand*) ((char*) fStorage + sizeof(SkTimeCode) * frameCount);
1.36 +#ifdef SK_DEBUG
1.37 + fTimesArray = (SkTimeCode(*)[10]) fTimes;
1.38 + fValuesArray = (SkOperand(*)[10]) fValues;
1.39 +#endif
1.40 +}
1.41 +
1.42 +bool SkOperandInterpolator::setKeyFrame(int index, SkMSec time, const SkOperand values[], SkScalar blend)
1.43 +{
1.44 + SkASSERT(values != NULL);
1.45 + blend = SkScalarPin(blend, 0, SK_Scalar1);
1.46 +
1.47 + bool success = ~index == SkTSearch<SkMSec>(&fTimes->fTime, index, time, sizeof(SkTimeCode));
1.48 + SkASSERT(success);
1.49 + if (success) {
1.50 + SkTimeCode* timeCode = &fTimes[index];
1.51 + timeCode->fTime = time;
1.52 + timeCode->fBlend[0] = SK_Scalar1 - blend;
1.53 + timeCode->fBlend[1] = 0;
1.54 + timeCode->fBlend[2] = 0;
1.55 + timeCode->fBlend[3] = SK_Scalar1 - blend;
1.56 + SkOperand* dst = &fValues[fElemCount * index];
1.57 + memcpy(dst, values, fElemCount * sizeof(SkOperand));
1.58 + }
1.59 + return success;
1.60 +}
1.61 +
1.62 +SkInterpolatorBase::Result SkOperandInterpolator::timeToValues(SkMSec time, SkOperand values[]) const
1.63 +{
1.64 + SkScalar T;
1.65 + int index;
1.66 + SkBool exact;
1.67 + Result result = timeToT(time, &T, &index, &exact);
1.68 + if (values)
1.69 + {
1.70 + const SkOperand* nextSrc = &fValues[index * fElemCount];
1.71 +
1.72 + if (exact)
1.73 + memcpy(values, nextSrc, fElemCount * sizeof(SkScalar));
1.74 + else
1.75 + {
1.76 + SkASSERT(index > 0);
1.77 +
1.78 + const SkOperand* prevSrc = nextSrc - fElemCount;
1.79 +
1.80 + if (fType == SkType_Float || fType == SkType_3D_Point) {
1.81 + for (int i = fElemCount - 1; i >= 0; --i)
1.82 + values[i].fScalar = SkScalarInterp(prevSrc[i].fScalar, nextSrc[i].fScalar, T);
1.83 + } else if (fType == SkType_Int || fType == SkType_MSec) {
1.84 + for (int i = fElemCount - 1; i >= 0; --i) {
1.85 + int32_t a = prevSrc[i].fS32;
1.86 + int32_t b = nextSrc[i].fS32;
1.87 + values[i].fS32 = a + SkScalarRoundToInt((b - a) * T);
1.88 + }
1.89 + } else
1.90 + memcpy(values, prevSrc, sizeof(SkOperand) * fElemCount);
1.91 + }
1.92 + }
1.93 + return result;
1.94 +}
1.95 +
1.96 +///////////////////////////////////////////////////////////////////////////////////////
1.97 +///////////////////////////////////////////////////////////////////////////////////////
1.98 +
1.99 +#ifdef SK_DEBUG
1.100 +
1.101 +#ifdef SK_SUPPORT_UNITTEST
1.102 + static SkOperand* iset(SkOperand array[3], int a, int b, int c)
1.103 + {
1.104 + array[0].fScalar = SkIntToScalar(a);
1.105 + array[1].fScalar = SkIntToScalar(b);
1.106 + array[2].fScalar = SkIntToScalar(c);
1.107 + return array;
1.108 + }
1.109 +#endif
1.110 +
1.111 +void SkOperandInterpolator::UnitTest()
1.112 +{
1.113 +#ifdef SK_SUPPORT_UNITTEST
1.114 + SkOperandInterpolator inter(3, 2, SkType_Float);
1.115 + SkOperand v1[3], v2[3], v[3], vv[3];
1.116 + Result result;
1.117 +
1.118 + inter.setKeyFrame(0, 100, iset(v1, 10, 20, 30), 0);
1.119 + inter.setKeyFrame(1, 200, iset(v2, 110, 220, 330));
1.120 +
1.121 + result = inter.timeToValues(0, v);
1.122 + SkASSERT(result == kFreezeStart_Result);
1.123 + SkASSERT(memcmp(v, v1, sizeof(v)) == 0);
1.124 +
1.125 + result = inter.timeToValues(99, v);
1.126 + SkASSERT(result == kFreezeStart_Result);
1.127 + SkASSERT(memcmp(v, v1, sizeof(v)) == 0);
1.128 +
1.129 + result = inter.timeToValues(100, v);
1.130 + SkASSERT(result == kNormal_Result);
1.131 + SkASSERT(memcmp(v, v1, sizeof(v)) == 0);
1.132 +
1.133 + result = inter.timeToValues(200, v);
1.134 + SkASSERT(result == kNormal_Result);
1.135 + SkASSERT(memcmp(v, v2, sizeof(v)) == 0);
1.136 +
1.137 + result = inter.timeToValues(201, v);
1.138 + SkASSERT(result == kFreezeEnd_Result);
1.139 + SkASSERT(memcmp(v, v2, sizeof(v)) == 0);
1.140 +
1.141 + result = inter.timeToValues(150, v);
1.142 + SkASSERT(result == kNormal_Result);
1.143 + SkASSERT(memcmp(v, iset(vv, 60, 120, 180), sizeof(v)) == 0);
1.144 +
1.145 + result = inter.timeToValues(125, v);
1.146 + SkASSERT(result == kNormal_Result);
1.147 + result = inter.timeToValues(175, v);
1.148 + SkASSERT(result == kNormal_Result);
1.149 +#endif
1.150 +}
1.151 +
1.152 +#endif
