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comparison: gfx/skia/trunk/src/animator/SkDisplayRandom.cpp
gfx/skia/trunk/src/animator/SkDisplayRandom.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:19e6414c5462 |
|---|---|
| 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 #include "SkDisplayRandom.h" | |
| 11 #include "SkInterpolator.h" | |
| 12 | |
| 13 enum SkDisplayRandom_Properties { | |
| 14 SK_PROPERTY(random), | |
| 15 SK_PROPERTY(seed) | |
| 16 }; | |
| 17 | |
| 18 #if SK_USE_CONDENSED_INFO == 0 | |
| 19 | |
| 20 const SkMemberInfo SkDisplayRandom::fInfo[] = { | |
| 21 SK_MEMBER(blend, Float), | |
| 22 SK_MEMBER(max, Float), | |
| 23 SK_MEMBER(min, Float), | |
| 24 SK_MEMBER_DYNAMIC_PROPERTY(random, Float), | |
| 25 SK_MEMBER_PROPERTY(seed, Int) | |
| 26 }; | |
| 27 | |
| 28 #endif | |
| 29 | |
| 30 DEFINE_GET_MEMBER(SkDisplayRandom); | |
| 31 | |
| 32 SkDisplayRandom::SkDisplayRandom() : blend(0), min(0), max(SK_Scalar1) { | |
| 33 } | |
| 34 | |
| 35 #ifdef SK_DUMP_ENABLED | |
| 36 void SkDisplayRandom::dump(SkAnimateMaker* maker) { | |
| 37 dumpBase(maker); | |
| 38 SkDebugf("min=\"%g\" ", SkScalarToFloat(min)); | |
| 39 SkDebugf("max=\"%g\" ", SkScalarToFloat(max)); | |
| 40 SkDebugf("blend=\"%g\" ", SkScalarToFloat(blend)); | |
| 41 SkDebugf("/>\n"); | |
| 42 } | |
| 43 #endif | |
| 44 | |
| 45 bool SkDisplayRandom::getProperty(int index, SkScriptValue* value) const { | |
| 46 switch(index) { | |
| 47 case SK_PROPERTY(random): { | |
| 48 SkScalar random = fRandom.nextUScalar1(); | |
| 49 SkScalar relativeT = SkUnitCubicInterp(random, SK_Scalar1 - blend, 0, 0, SK_Scalar1 - blend); | |
| 50 value->fOperand.fScalar = min + SkScalarMul(max - min, relativeT); | |
| 51 value->fType = SkType_Float; | |
| 52 return true; | |
| 53 } | |
| 54 default: | |
| 55 SkASSERT(0); | |
| 56 } | |
| 57 return false; | |
| 58 } | |
| 59 | |
| 60 bool SkDisplayRandom::setProperty(int index, SkScriptValue& value) { | |
| 61 SkASSERT(index == SK_PROPERTY(seed)); | |
| 62 SkASSERT(value.fType == SkType_Int); | |
| 63 fRandom.setSeed(value.fOperand.fS32); | |
| 64 return true; | |
| 65 } |
