Index: skia/effects/SkDiscretePathEffect.cpp |
=================================================================== |
--- skia/effects/SkDiscretePathEffect.cpp (revision 16859) |
+++ skia/effects/SkDiscretePathEffect.cpp (working copy) |
@@ -1,105 +0,0 @@ |
-/* libs/graphics/effects/SkDiscretePathEffect.cpp |
-** |
-** Copyright 2006, The Android Open Source Project |
-** |
-** Licensed under the Apache License, Version 2.0 (the "License"); |
-** you may not use this file except in compliance with the License. |
-** You may obtain a copy of the License at |
-** |
-** http://www.apache.org/licenses/LICENSE-2.0 |
-** |
-** Unless required by applicable law or agreed to in writing, software |
-** distributed under the License is distributed on an "AS IS" BASIS, |
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
-** See the License for the specific language governing permissions and |
-** limitations under the License. |
-*/ |
- |
-#include "SkDiscretePathEffect.h" |
-#include "SkBuffer.h" |
-#include "SkPathMeasure.h" |
-#include "SkRandom.h" |
- |
-static void Perterb(SkPoint* p, const SkVector& tangent, SkScalar scale) |
-{ |
- SkVector normal = tangent; |
- normal.rotateCCW(); |
- normal.setLength(scale); |
- *p += normal; |
-} |
- |
- |
-SkDiscretePathEffect::SkDiscretePathEffect(SkScalar segLength, SkScalar deviation) |
- : fSegLength(segLength), fPerterb(deviation) |
-{ |
-} |
- |
-bool SkDiscretePathEffect::filterPath(SkPath* dst, const SkPath& src, SkScalar* width) |
-{ |
- bool doFill = *width < 0; |
- |
- SkPathMeasure meas(src, doFill); |
- uint32_t seed = SkScalarRound(meas.getLength()); |
- SkRandom rand(seed ^ ((seed << 16) | (seed >> 16))); |
- SkScalar scale = fPerterb; |
- SkPoint p; |
- SkVector v; |
- |
- do { |
- SkScalar length = meas.getLength(); |
- |
- if (fSegLength * (2 + doFill) > length) |
- { |
- meas.getSegment(0, length, dst, true); // to short for us to mangle |
- } |
- else |
- { |
- int n = SkScalarRound(SkScalarDiv(length, fSegLength)); |
- SkScalar delta = length / n; |
- SkScalar distance = 0; |
- |
- if (meas.isClosed()) |
- { |
- n -= 1; |
- distance += delta/2; |
- } |
- meas.getPosTan(distance, &p, &v); |
- Perterb(&p, v, SkScalarMul(rand.nextSScalar1(), scale)); |
- dst->moveTo(p); |
- while (--n >= 0) |
- { |
- distance += delta; |
- meas.getPosTan(distance, &p, &v); |
- Perterb(&p, v, SkScalarMul(rand.nextSScalar1(), scale)); |
- dst->lineTo(p); |
- } |
- if (meas.isClosed()) |
- dst->close(); |
- } |
- } while (meas.nextContour()); |
- return true; |
-} |
- |
-SkFlattenable::Factory SkDiscretePathEffect::getFactory() |
-{ |
- return CreateProc; |
-} |
- |
-SkFlattenable* SkDiscretePathEffect::CreateProc(SkFlattenableReadBuffer& buffer) |
-{ |
- return SkNEW_ARGS(SkDiscretePathEffect, (buffer)); |
-} |
- |
-void SkDiscretePathEffect::flatten(SkFlattenableWriteBuffer& buffer) |
-{ |
- buffer.writeScalar(fSegLength); |
- buffer.writeScalar(fPerterb); |
-} |
- |
-SkDiscretePathEffect::SkDiscretePathEffect(SkFlattenableReadBuffer& buffer) |
-{ |
- fSegLength = buffer.readScalar(); |
- fPerterb = buffer.readScalar(); |
-} |
- |
- |