| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkArcToPathEffect.h" |
| #include "SkPath.h" |
| #include "SkPoint.h" |
| #include "SkReadBuffer.h" |
| #include "SkWriteBuffer.h" |
| |
| SkArcToPathEffect::SkArcToPathEffect(SkScalar radius) : fRadius(radius) {} |
| |
| bool SkArcToPathEffect::filterPath(SkPath* dst, const SkPath& src, |
| SkStrokeRec*, const SkRect*) const { |
| SkPath::Iter iter(src, false); |
| SkPath::Verb verb; |
| SkPoint pts[4]; |
| |
| SkPoint lastCorner = { 0, 0 }; // avoid warning |
| SkPath::Verb prevVerb = SkPath::kMove_Verb; |
| |
| for (;;) { |
| switch (verb = iter.next(pts, false)) { |
| case SkPath::kMove_Verb: |
| if (SkPath::kLine_Verb == prevVerb) { |
| dst->lineTo(lastCorner); |
| } |
| dst->moveTo(pts[0]); |
| break; |
| case SkPath::kLine_Verb: |
| if (prevVerb == SkPath::kLine_Verb) { |
| dst->arcTo(pts[0], pts[1], fRadius); |
| } |
| lastCorner = pts[1]; |
| break; |
| case SkPath::kQuad_Verb: |
| dst->quadTo(pts[1], pts[2]); |
| lastCorner = pts[2]; |
| break; |
| case SkPath::kConic_Verb: |
| dst->conicTo(pts[1], pts[2], iter.conicWeight()); |
| lastCorner = pts[2]; |
| break; |
| case SkPath::kCubic_Verb: |
| dst->cubicTo(pts[1], pts[2], pts[3]); |
| lastCorner = pts[3]; |
| break; |
| case SkPath::kClose_Verb: |
| dst->lineTo(lastCorner); |
| break; |
| case SkPath::kDone_Verb: |
| dst->lineTo(lastCorner); |
| goto DONE; |
| } |
| prevVerb = verb; |
| } |
| DONE: |
| return true; |
| } |
| |
| sk_sp<SkFlattenable> SkArcToPathEffect::CreateProc(SkReadBuffer& buffer) { |
| return SkArcToPathEffect::Make(buffer.readScalar()); |
| } |
| |
| void SkArcToPathEffect::flatten(SkWriteBuffer& buffer) const { |
| buffer.writeScalar(fRadius); |
| } |
| |
| #ifndef SK_IGNORE_TO_STRING |
| void SkArcToPathEffect::toString(SkString* str) const { |
| str->appendf("SkArcToPathEffect: ("); |
| str->appendf("radius: %f", fRadius); |
| str->appendf(")"); |
| } |
| #endif |