skia2/include/effects/SkDiscretePathEffect.h
reed 5e1ddb1086 Reland of change all factories to return their base-class (patchset #1 id:1 of https://codereview.chromium.org/1540203002/ )
Reason for revert:
chrome changes have landed

Original issue's description:
> Revert of change all factories to return their base-class (patchset #1 id:1 of https://codereview.chromium.org/1535353002/ )
>
> Reason for revert:
> need to update some chrome/blink call-sites
>
> Original issue's description:
> > change all factories to return their base-class
> >
> > will watch DEPS roll to see if there are chrome sites needing updates
> >
> > BUG=skia:
> > GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1535353002
> >
> > TBR=
> >
> > Committed: https://skia.googlesource.com/skia/+/d63f60a36327e9580861205ebb35cade8c49bd34
>
> TBR=
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/2d6ba6690f8951e152d8e793191b14afd52f5506

TBR=
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1533373002
2015-12-21 08:52:45 -08:00

62 lines
2.1 KiB
C++

/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkDiscretePathEffect_DEFINED
#define SkDiscretePathEffect_DEFINED
#include "SkPathEffect.h"
/** \class SkDiscretePathEffect
This path effect chops a path into discrete segments, and randomly displaces them.
*/
class SK_API SkDiscretePathEffect : public SkPathEffect {
public:
/** Break the path into segments of segLength length, and randomly move the endpoints
away from the original path by a maximum of deviation.
Note: works on filled or framed paths
@param seedAssist This is a caller-supplied seedAssist that modifies
the seed value that is used to randomize the path
segments' endpoints. If not supplied it defaults to 0,
in which case filtering a path multiple times will
result in the same set of segments (this is useful for
testing). If a caller does not want this behaviour
they can pass in a different seedAssist to get a
different set of path segments.
*/
static SkPathEffect* Create(SkScalar segLength, SkScalar deviation, uint32_t seedAssist = 0) {
return new SkDiscretePathEffect(segLength, deviation, seedAssist);
}
virtual bool filterPath(SkPath* dst, const SkPath& src,
SkStrokeRec*, const SkRect*) const override;
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiscretePathEffect)
#ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
bool exposedInAndroidJavaAPI() const override { return true; }
#endif
protected:
SkDiscretePathEffect(SkScalar segLength,
SkScalar deviation,
uint32_t seedAssist);
void flatten(SkWriteBuffer&) const override;
private:
SkScalar fSegLength, fPerterb;
/* Caller-supplied 32 bit seed assist */
uint32_t fSeedAssist;
typedef SkPathEffect INHERITED;
};
#endif