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comparison: gfx/skia/trunk/src/core/SkEdgeClipper.h
gfx/skia/trunk/src/core/SkEdgeClipper.h
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
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| -1:000000000000 | 0:8d9dad24ba12 |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2009 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 #ifndef SkEdgeClipper_DEFINED | |
| 11 #define SkEdgeClipper_DEFINED | |
| 12 | |
| 13 #include "SkPath.h" | |
| 14 | |
| 15 /** This is basically an iterator. It is initialized with an edge and a clip, | |
| 16 and then next() is called until it returns kDone_Verb. | |
| 17 */ | |
| 18 class SkEdgeClipper { | |
| 19 public: | |
| 20 bool clipQuad(const SkPoint pts[3], const SkRect& clip); | |
| 21 bool clipCubic(const SkPoint pts[4], const SkRect& clip); | |
| 22 | |
| 23 SkPath::Verb next(SkPoint pts[]); | |
| 24 | |
| 25 private: | |
| 26 SkPoint* fCurrPoint; | |
| 27 SkPath::Verb* fCurrVerb; | |
| 28 | |
| 29 enum { | |
| 30 kMaxVerbs = 13, | |
| 31 kMaxPoints = 32 | |
| 32 }; | |
| 33 SkPoint fPoints[kMaxPoints]; | |
| 34 SkPath::Verb fVerbs[kMaxVerbs]; | |
| 35 | |
| 36 void clipMonoQuad(const SkPoint srcPts[3], const SkRect& clip); | |
| 37 void clipMonoCubic(const SkPoint srcPts[4], const SkRect& clip); | |
| 38 void appendVLine(SkScalar x, SkScalar y0, SkScalar y1, bool reverse); | |
| 39 void appendQuad(const SkPoint pts[3], bool reverse); | |
| 40 void appendCubic(const SkPoint pts[4], bool reverse); | |
| 41 }; | |
| 42 | |
| 43 #ifdef SK_DEBUG | |
| 44 void sk_assert_monotonic_x(const SkPoint pts[], int count); | |
| 45 void sk_assert_monotonic_y(const SkPoint pts[], int count); | |
| 46 #else | |
| 47 #define sk_assert_monotonic_x(pts, count) | |
| 48 #define sk_assert_monotonic_y(pts, count) | |
| 49 #endif | |
| 50 | |
| 51 #endif |
