The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/pathops/SkPathOpsQuad.h
gfx/skia/trunk/src/pathops/SkPathOpsQuad.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:e82987260c5c |
|---|---|
| 1 /* | |
| 2 * Copyright 2012 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #ifndef SkPathOpsQuad_DEFINED | |
| 9 #define SkPathOpsQuad_DEFINED | |
| 10 | |
| 11 #include "SkPathOpsPoint.h" | |
| 12 | |
| 13 struct SkDQuadPair { | |
| 14 const SkDQuad& first() const { return (const SkDQuad&) pts[0]; } | |
| 15 const SkDQuad& second() const { return (const SkDQuad&) pts[2]; } | |
| 16 SkDPoint pts[5]; | |
| 17 }; | |
| 18 | |
| 19 struct SkDQuad { | |
| 20 SkDPoint fPts[3]; | |
| 21 | |
| 22 SkDQuad flip() const { | |
| 23 SkDQuad result = {{fPts[2], fPts[1], fPts[0]}}; | |
| 24 return result; | |
| 25 } | |
| 26 | |
| 27 void set(const SkPoint pts[3]) { | |
| 28 fPts[0] = pts[0]; | |
| 29 fPts[1] = pts[1]; | |
| 30 fPts[2] = pts[2]; | |
| 31 } | |
| 32 | |
| 33 const SkDPoint& operator[](int n) const { SkASSERT(n >= 0 && n < 3); return fPts[n]; } | |
| 34 SkDPoint& operator[](int n) { SkASSERT(n >= 0 && n < 3); return fPts[n]; } | |
| 35 | |
| 36 static int AddValidTs(double s[], int realRoots, double* t); | |
| 37 void align(int endIndex, SkDPoint* dstPt) const; | |
| 38 SkDQuadPair chopAt(double t) const; | |
| 39 SkDVector dxdyAtT(double t) const; | |
| 40 static int FindExtrema(double a, double b, double c, double tValue[1]); | |
| 41 bool isLinear(int startIndex, int endIndex) const; | |
| 42 bool monotonicInY() const; | |
| 43 double nearestT(const SkDPoint&) const; | |
| 44 bool pointInHull(const SkDPoint&) const; | |
| 45 SkDPoint ptAtT(double t) const; | |
| 46 static int RootsReal(double A, double B, double C, double t[2]); | |
| 47 static int RootsValidT(const double A, const double B, const double C, double s[2]); | |
| 48 static void SetABC(const double* quad, double* a, double* b, double* c); | |
| 49 SkDQuad subDivide(double t1, double t2) const; | |
| 50 static SkDQuad SubDivide(const SkPoint a[3], double t1, double t2) { | |
| 51 SkDQuad quad; | |
| 52 quad.set(a); | |
| 53 return quad.subDivide(t1, t2); | |
| 54 } | |
| 55 SkDPoint subDivide(const SkDPoint& a, const SkDPoint& c, double t1, double t2) const; | |
| 56 static SkDPoint SubDivide(const SkPoint pts[3], const SkDPoint& a, const SkDPoint& c, | |
| 57 double t1, double t2) { | |
| 58 SkDQuad quad; | |
| 59 quad.set(pts); | |
| 60 return quad.subDivide(a, c, t1, t2); | |
| 61 } | |
| 62 SkDCubic toCubic() const; | |
| 63 SkDPoint top(double startT, double endT) const; | |
| 64 | |
| 65 #ifdef SK_DEBUG | |
| 66 void dump(); | |
| 67 #endif | |
| 68 private: | |
| 69 // static double Tangent(const double* quadratic, double t); // uncalled | |
| 70 }; | |
| 71 | |
| 72 #endif |
