gfx/skia/trunk/src/pathops/SkPathOpsLine.h

branch
TOR_BUG_3246
changeset 7
129ffea94266
equal deleted inserted replaced
-1:000000000000 0:d426297d37ba
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 #ifndef SkPathOpsLine_DEFINED
8 #define SkPathOpsLine_DEFINED
9
10 #include "SkPathOpsPoint.h"
11
12 struct SkDLine {
13 SkDPoint fPts[2];
14
15 const SkDPoint& operator[](int n) const { SkASSERT(n >= 0 && n < 2); return fPts[n]; }
16 SkDPoint& operator[](int n) { SkASSERT(n >= 0 && n < 2); return fPts[n]; }
17
18 void set(const SkPoint pts[2]) {
19 fPts[0] = pts[0];
20 fPts[1] = pts[1];
21 }
22
23 static SkDLine SubDivide(const SkPoint a[2], double t1, double t2) {
24 SkDLine line;
25 line.set(a);
26 return line.subDivide(t1, t2);
27 }
28
29 double exactPoint(const SkDPoint& xy) const;
30 static double ExactPointH(const SkDPoint& xy, double left, double right, double y);
31 static double ExactPointV(const SkDPoint& xy, double top, double bottom, double x);
32 double isLeft(const SkDPoint& pt) const;
33 double nearPoint(const SkDPoint& xy) const;
34 bool nearRay(const SkDPoint& xy) const;
35 static double NearPointH(const SkDPoint& xy, double left, double right, double y);
36 static double NearPointV(const SkDPoint& xy, double top, double bottom, double x);
37 static bool NearRay(double dx1, double dy1, double dx2, double dy2);
38 SkDPoint ptAtT(double t) const;
39 SkDLine subDivide(double t1, double t2) const;
40
41 #ifdef SK_DEBUG
42 void dump();
43 #endif
44 private:
45 SkDVector tangent() const { return fPts[0] - fPts[1]; }
46 };
47
48 #endif

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