1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/pathops/SkOpEdgeBuilder.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,63 @@
1.4 +/*
1.5 + * Copyright 2012 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +#ifndef SkOpEdgeBuilder_DEFINED
1.11 +#define SkOpEdgeBuilder_DEFINED
1.12 +
1.13 +#include "SkOpContour.h"
1.14 +#include "SkPathWriter.h"
1.15 +#include "SkTArray.h"
1.16 +
1.17 +class SkOpEdgeBuilder {
1.18 +public:
1.19 + SkOpEdgeBuilder(const SkPathWriter& path, SkTArray<SkOpContour>& contours)
1.20 + : fPath(path.nativePath())
1.21 + , fContours(contours)
1.22 + , fAllowOpenContours(true) {
1.23 + init();
1.24 + }
1.25 +
1.26 + SkOpEdgeBuilder(const SkPath& path, SkTArray<SkOpContour>& contours)
1.27 + : fPath(&path)
1.28 + , fContours(contours)
1.29 + , fAllowOpenContours(false) {
1.30 + init();
1.31 + }
1.32 +
1.33 + void complete() {
1.34 + if (fCurrentContour && fCurrentContour->segments().count()) {
1.35 + fCurrentContour->complete();
1.36 + fCurrentContour = NULL;
1.37 + }
1.38 + }
1.39 +
1.40 + SkPathOpsMask xorMask() const {
1.41 + return fXorMask[fOperand];
1.42 + }
1.43 +
1.44 + void addOperand(const SkPath& path);
1.45 + bool finish();
1.46 + void init();
1.47 +
1.48 +private:
1.49 + void closeContour(const SkPoint& curveEnd, const SkPoint& curveStart);
1.50 + bool close();
1.51 + int preFetch();
1.52 + bool walk();
1.53 +
1.54 + const SkPath* fPath;
1.55 + SkTArray<SkPoint, true> fPathPts;
1.56 + SkTArray<uint8_t, true> fPathVerbs;
1.57 + SkOpContour* fCurrentContour;
1.58 + SkTArray<SkOpContour>& fContours;
1.59 + SkPathOpsMask fXorMask[2];
1.60 + int fSecondHalf;
1.61 + bool fOperand;
1.62 + bool fAllowOpenContours;
1.63 + bool fUnparseable;
1.64 +};
1.65 +
1.66 +#endif
