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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkOpEdgeBuilder_DEFINED
#define SkOpEdgeBuilder_DEFINED
#include "SkOpContour.h"
#include "SkPathWriter.h"
class SkOpEdgeBuilder {
public:
SkOpEdgeBuilder(const SkPathWriter& path, SkOpContour* contours2, SkChunkAlloc* allocator,
SkOpGlobalState* globalState)
: fAllocator(allocator) // FIXME: replace with const, tune this
, fGlobalState(globalState)
, fPath(path.nativePath())
, fContoursHead(contours2)
, fAllowOpenContours(true) {
init();
}
SkOpEdgeBuilder(const SkPath& path, SkOpContour* contours2, SkChunkAlloc* allocator,
SkOpGlobalState* globalState)
: fAllocator(allocator)
, fGlobalState(globalState)
, fPath(&path)
, fContoursHead(contours2)
, fAllowOpenContours(false) {
init();
}
void addOperand(const SkPath& path);
void complete() {
if (fCurrentContour && fCurrentContour->count()) {
fCurrentContour->complete();
fCurrentContour = nullptr;
}
}
int count() const;
bool finish(SkChunkAlloc* );
const SkOpContour* head() const {
return fContoursHead;
}
void init();
bool unparseable() const { return fUnparseable; }
SkPathOpsMask xorMask() const { return fXorMask[fOperand]; }
private:
void closeContour(const SkPoint& curveEnd, const SkPoint& curveStart);
bool close();
int preFetch();
bool walk(SkChunkAlloc* );
SkChunkAlloc* fAllocator;
SkOpGlobalState* fGlobalState;
const SkPath* fPath;
SkTDArray<SkPoint> fPathPts;
SkTDArray<SkScalar> fWeights;
SkTDArray<uint8_t> fPathVerbs;
SkOpContour* fCurrentContour;
SkOpContour* fContoursHead;
SkPathOpsMask fXorMask[2];
int fSecondHalf;
bool fOperand;
bool fAllowOpenContours;
bool fUnparseable;
};
#endif
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