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| 1 /* | 1 /* |
| 2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #ifndef SkPerlinNoiseShader_DEFINED | 8 #ifndef SkPerlinNoiseShader_DEFINED |
| 9 #define SkPerlinNoiseShader_DEFINED | 9 #define SkPerlinNoiseShader_DEFINED |
| 10 | 10 |
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| 51 * baseFrequency * 1, * 2, * 4, ..., * 512, which quickly yields insignific
antly small | 51 * baseFrequency * 1, * 2, * 4, ..., * 512, which quickly yields insignific
antly small |
| 52 * periods and resembles regular unstructured noise rather than Perlin nois
e. | 52 * periods and resembles regular unstructured noise rather than Perlin nois
e. |
| 53 * | 53 * |
| 54 * If tileSize isn't NULL or an empty size, the tileSize parameter will be
used to modify | 54 * If tileSize isn't NULL or an empty size, the tileSize parameter will be
used to modify |
| 55 * the frequencies so that the noise will be tileable for the given tile si
ze. If tileSize | 55 * the frequencies so that the noise will be tileable for the given tile si
ze. If tileSize |
| 56 * is NULL or an empty size, the frequencies will be used as is without mod
ification. | 56 * is NULL or an empty size, the frequencies will be used as is without mod
ification. |
| 57 */ | 57 */ |
| 58 static SkShader* CreateFractalNoise(SkScalar baseFrequencyX, SkScalar baseFr
equencyY, | 58 static SkShader* CreateFractalNoise(SkScalar baseFrequencyX, SkScalar baseFr
equencyY, |
| 59 int numOctaves, SkScalar seed, | 59 int numOctaves, SkScalar seed, |
| 60 const SkISize* tileSize = NULL); | 60 const SkISize* tileSize = NULL); |
| 61 static SkShader* CreateTurbulence(SkScalar baseFrequencyX, SkScalar baseFreq
uencyY, |
| 62 int numOctaves, SkScalar seed, |
| 63 const SkISize* tileSize = NULL); |
| 64 /** |
| 65 * Create alias for CreateTurbulunce until all Skia users changed |
| 66 * its code to use the new naming |
| 67 */ |
| 61 static SkShader* CreateTubulence(SkScalar baseFrequencyX, SkScalar baseFrequ
encyY, | 68 static SkShader* CreateTubulence(SkScalar baseFrequencyX, SkScalar baseFrequ
encyY, |
| 62 int numOctaves, SkScalar seed, | 69 int numOctaves, SkScalar seed, |
| 63 const SkISize* tileSize = NULL); | 70 const SkISize* tileSize = NULL) { |
| 71 » return CreateTurbulence(baseFrequencyX, baseFrequencyY, numOctaves, seed
, tileSize); |
| 72 } |
| 73 |
| 64 | 74 |
| 65 virtual bool setContext(const SkBitmap& device, const SkPaint& paint, | 75 virtual bool setContext(const SkBitmap& device, const SkPaint& paint, |
| 66 const SkMatrix& matrix); | 76 const SkMatrix& matrix); |
| 67 virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE; | 77 virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE; |
| 68 virtual void shadeSpan16(int x, int y, uint16_t[], int count) SK_OVERRIDE; | 78 virtual void shadeSpan16(int x, int y, uint16_t[], int count) SK_OVERRIDE; |
| 69 | 79 |
| 70 virtual GrEffectRef* asNewEffect(GrContext* context, const SkPaint&) const S
K_OVERRIDE; | 80 virtual GrEffectRef* asNewEffect(GrContext* context, const SkPaint&) const S
K_OVERRIDE; |
| 71 | 81 |
| 72 SK_TO_STRING_OVERRIDE() | 82 SK_TO_STRING_OVERRIDE() |
| 73 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPerlinNoiseShader) | 83 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPerlinNoiseShader) |
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| 102 /*const*/ bool fStitchTiles; | 112 /*const*/ bool fStitchTiles; |
| 103 // TODO (scroggo): Once setContext creates a new object, place this on that
object. | 113 // TODO (scroggo): Once setContext creates a new object, place this on that
object. |
| 104 SkMatrix fMatrix; | 114 SkMatrix fMatrix; |
| 105 | 115 |
| 106 PaintingData* fPaintingData; | 116 PaintingData* fPaintingData; |
| 107 | 117 |
| 108 typedef SkShader INHERITED; | 118 typedef SkShader INHERITED; |
| 109 }; | 119 }; |
| 110 | 120 |
| 111 #endif | 121 #endif |
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