1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/core/SkEdgeBuilder.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,52 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2011 Google Inc.
1.7 + *
1.8 + * Use of this source code is governed by a BSD-style license that can be
1.9 + * found in the LICENSE file.
1.10 + */
1.11 +#ifndef SkEdgeBuilder_DEFINED
1.12 +#define SkEdgeBuilder_DEFINED
1.13 +
1.14 +#include "SkChunkAlloc.h"
1.15 +#include "SkRect.h"
1.16 +#include "SkTDArray.h"
1.17 +
1.18 +struct SkEdge;
1.19 +class SkEdgeClipper;
1.20 +class SkPath;
1.21 +
1.22 +class SkEdgeBuilder {
1.23 +public:
1.24 + SkEdgeBuilder();
1.25 +
1.26 + // returns the number of built edges. The array of those edge pointers
1.27 + // is returned from edgeList().
1.28 + int build(const SkPath& path, const SkIRect* clip, int shiftUp);
1.29 +
1.30 + SkEdge** edgeList() { return fEdgeList; }
1.31 +
1.32 +private:
1.33 + SkChunkAlloc fAlloc;
1.34 + SkTDArray<SkEdge*> fList;
1.35 +
1.36 + /*
1.37 + * If we're in general mode, we allcoate the pointers in fList, and this
1.38 + * will point at fList.begin(). If we're in polygon mode, fList will be
1.39 + * empty, as we will have preallocated room for the pointers in fAlloc's
1.40 + * block, and fEdgeList will point into that.
1.41 + */
1.42 + SkEdge** fEdgeList;
1.43 +
1.44 + int fShiftUp;
1.45 +
1.46 +public:
1.47 + void addLine(const SkPoint pts[]);
1.48 + void addQuad(const SkPoint pts[]);
1.49 + void addCubic(const SkPoint pts[]);
1.50 + void addClipper(SkEdgeClipper*);
1.51 +
1.52 + int buildPoly(const SkPath& path, const SkIRect* clip, int shiftUp);
1.53 +};
1.54 +
1.55 +#endif
