SkDiscretePathEffect.h revision 6806fe87e0b39e283291c1a1c7d1d864230aa2aa 
1/*
2 * Copyright 2006 The Android Open Source Project
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
8#ifndef SkDiscretePathEffect_DEFINED
9#define SkDiscretePathEffect_DEFINED
10
11#include "SkPathEffect.h"
12
13/** \class SkDiscretePathEffect
14
15    This path effect chops a path into discrete segments, and randomly displaces them.
16*/
17class SK_API SkDiscretePathEffect : public SkPathEffect {
18public:
19    /** Break the path into segments of segLength length, and randomly move the endpoints
20        away from the original path by a maximum of deviation.
21        Note: works on filled or framed paths
22    */
23    SkDiscretePathEffect(SkScalar segLength, SkScalar deviation);
24
25    virtual bool filterPath(SkPath* dst, const SkPath& src, SkStrokeRec*) SK_OVERRIDE;
26
27    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiscretePathEffect)
28
29protected:
30    SkDiscretePathEffect(SkFlattenableReadBuffer&);
31    virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
32
33private:
34    SkScalar fSegLength, fPerterb;
35
36    typedef SkPathEffect INHERITED;
37};
38
39#endif
40