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| 1 | |
| 2 /* | 1 /* |
| 3 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
| 4 * | 3 * |
| 5 * 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 |
| 6 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 7 */ | 6 */ |
| 8 | 7 |
| 9 | |
| 10 #ifndef GrPathUtils_DEFINED | 8 #ifndef GrPathUtils_DEFINED |
| 11 #define GrPathUtils_DEFINED | 9 #define GrPathUtils_DEFINED |
| 12 | 10 |
| 13 #include "GrRect.h" | 11 #include "GrPoint.h" |
| 12 #include "SkRect.h" |
| 14 #include "SkPath.h" | 13 #include "SkPath.h" |
| 15 #include "SkTArray.h" | 14 #include "SkTArray.h" |
| 16 | 15 |
| 17 class SkMatrix; | 16 class SkMatrix; |
| 18 | 17 |
| 19 /** | 18 /** |
| 20 * Utilities for evaluating paths. | 19 * Utilities for evaluating paths. |
| 21 */ | 20 */ |
| 22 namespace GrPathUtils { | 21 namespace GrPathUtils { |
| 23 SkScalar scaleToleranceToSrc(SkScalar devTol, | 22 SkScalar scaleToleranceToSrc(SkScalar devTol, |
| 24 const SkMatrix& viewM, | 23 const SkMatrix& viewM, |
| 25 const GrRect& pathBounds); | 24 const SkRect& pathBounds); |
| 26 | 25 |
| 27 /// Since we divide by tol if we're computing exact worst-case bounds, | 26 /// Since we divide by tol if we're computing exact worst-case bounds, |
| 28 /// very small tolerances will be increased to gMinCurveTol. | 27 /// very small tolerances will be increased to gMinCurveTol. |
| 29 int worstCasePointCount(const SkPath&, | 28 int worstCasePointCount(const SkPath&, |
| 30 int* subpaths, | 29 int* subpaths, |
| 31 SkScalar tol); | 30 SkScalar tol); |
| 32 | 31 |
| 33 /// Since we divide by tol if we're computing exact worst-case bounds, | 32 /// Since we divide by tol if we're computing exact worst-case bounds, |
| 34 /// very small tolerances will be increased to gMinCurveTol. | 33 /// very small tolerances will be increased to gMinCurveTol. |
| 35 uint32_t quadraticPointCount(const GrPoint points[], SkScalar tol); | 34 uint32_t quadraticPointCount(const GrPoint points[], SkScalar tol); |
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| 111 // Setting constrainWithinTangents to true enforces this property. When this | 110 // Setting constrainWithinTangents to true enforces this property. When this |
| 112 // is true the cubic must be simple and dir must specify the orientation of | 111 // is true the cubic must be simple and dir must specify the orientation of |
| 113 // the cubic. Otherwise, dir is ignored. | 112 // the cubic. Otherwise, dir is ignored. |
| 114 void convertCubicToQuads(const GrPoint p[4], | 113 void convertCubicToQuads(const GrPoint p[4], |
| 115 SkScalar tolScale, | 114 SkScalar tolScale, |
| 116 bool constrainWithinTangents, | 115 bool constrainWithinTangents, |
| 117 SkPath::Direction dir, | 116 SkPath::Direction dir, |
| 118 SkTArray<SkPoint, true>* quads); | 117 SkTArray<SkPoint, true>* quads); |
| 119 }; | 118 }; |
| 120 #endif | 119 #endif |
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