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

branch
TOR_BUG_3246
changeset 7
129ffea94266
equal deleted inserted replaced
-1:000000000000 0:b5ab87e5c795
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 SkOpEdgeBuilder_DEFINED
8 #define SkOpEdgeBuilder_DEFINED
9
10 #include "SkOpContour.h"
11 #include "SkPathWriter.h"
12 #include "SkTArray.h"
13
14 class SkOpEdgeBuilder {
15 public:
16 SkOpEdgeBuilder(const SkPathWriter& path, SkTArray<SkOpContour>& contours)
17 : fPath(path.nativePath())
18 , fContours(contours)
19 , fAllowOpenContours(true) {
20 init();
21 }
22
23 SkOpEdgeBuilder(const SkPath& path, SkTArray<SkOpContour>& contours)
24 : fPath(&path)
25 , fContours(contours)
26 , fAllowOpenContours(false) {
27 init();
28 }
29
30 void complete() {
31 if (fCurrentContour && fCurrentContour->segments().count()) {
32 fCurrentContour->complete();
33 fCurrentContour = NULL;
34 }
35 }
36
37 SkPathOpsMask xorMask() const {
38 return fXorMask[fOperand];
39 }
40
41 void addOperand(const SkPath& path);
42 bool finish();
43 void init();
44
45 private:
46 void closeContour(const SkPoint& curveEnd, const SkPoint& curveStart);
47 bool close();
48 int preFetch();
49 bool walk();
50
51 const SkPath* fPath;
52 SkTArray<SkPoint, true> fPathPts;
53 SkTArray<uint8_t, true> fPathVerbs;
54 SkOpContour* fCurrentContour;
55 SkTArray<SkOpContour>& fContours;
56 SkPathOpsMask fXorMask[2];
57 int fSecondHalf;
58 bool fOperand;
59 bool fAllowOpenContours;
60 bool fUnparseable;
61 };
62
63 #endif

mercurial