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