3 * Copyright 2006 The Android Open Source Project
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
10 #include "Sk2DPathEffect.h"
11 #include "SkReadBuffer.h"
12 #include "SkWriteBuffer.h"
16 Sk2DPathEffect::Sk2DPathEffect(const SkMatrix& mat) : fMatrix(mat) {
17 fMatrixIsInvertible = mat.invert(&fInverse);
20 bool Sk2DPathEffect::filterPath(SkPath* dst, const SkPath& src,
21 SkStrokeRec*, const SkRect*) const {
22 if (!fMatrixIsInvertible) {
29 src.transform(fInverse, &tmp);
30 tmp.getBounds().round(&ir);
35 rgn.setPath(tmp, SkRegion(ir));
36 SkRegion::Iterator iter(rgn);
37 for (; !iter.done(); iter.next()) {
38 const SkIRect& rect = iter.rect();
39 for (int y = rect.fTop; y < rect.fBottom; ++y) {
40 this->nextSpan(rect.fLeft, y, rect.width(), dst);
49 void Sk2DPathEffect::nextSpan(int x, int y, int count, SkPath* path) const {
50 if (!fMatrixIsInvertible) {
54 const SkMatrix& mat = this->getMatrix();
57 src.set(SkIntToScalar(x) + SK_ScalarHalf, SkIntToScalar(y) + SK_ScalarHalf);
59 mat.mapPoints(&dst, &src, 1);
60 this->next(dst, x++, y, path);
62 } while (--count > 0);
65 void Sk2DPathEffect::begin(const SkIRect& uvBounds, SkPath* dst) const {}
66 void Sk2DPathEffect::next(const SkPoint& loc, int u, int v, SkPath* dst) const {}
67 void Sk2DPathEffect::end(SkPath* dst) const {}
69 ///////////////////////////////////////////////////////////////////////////////
71 void Sk2DPathEffect::flatten(SkWriteBuffer& buffer) const {
72 this->INHERITED::flatten(buffer);
73 buffer.writeMatrix(fMatrix);
76 Sk2DPathEffect::Sk2DPathEffect(SkReadBuffer& buffer) {
77 buffer.readMatrix(&fMatrix);
78 fMatrixIsInvertible = fMatrix.invert(&fInverse);
81 ///////////////////////////////////////////////////////////////////////////////
83 bool SkLine2DPathEffect::filterPath(SkPath* dst, const SkPath& src,
84 SkStrokeRec* rec, const SkRect* cullRect) const {
85 if (this->INHERITED::filterPath(dst, src, rec, cullRect)) {
86 rec->setStrokeStyle(fWidth);
92 void SkLine2DPathEffect::nextSpan(int u, int v, int ucount, SkPath* dst) const {
94 SkPoint src[2], dstP[2];
96 src[0].set(SkIntToScalar(u) + SK_ScalarHalf, SkIntToScalar(v) + SK_ScalarHalf);
97 src[1].set(SkIntToScalar(u+ucount) + SK_ScalarHalf, SkIntToScalar(v) + SK_ScalarHalf);
98 this->getMatrix().mapPoints(dstP, src, 2);
100 dst->moveTo(dstP[0]);
101 dst->lineTo(dstP[1]);
105 SkLine2DPathEffect::SkLine2DPathEffect(SkReadBuffer& buffer) : INHERITED(buffer) {
106 fWidth = buffer.readScalar();
109 void SkLine2DPathEffect::flatten(SkWriteBuffer &buffer) const {
110 this->INHERITED::flatten(buffer);
111 buffer.writeScalar(fWidth);
114 ///////////////////////////////////////////////////////////////////////////////
116 SkPath2DPathEffect::SkPath2DPathEffect(const SkMatrix& m, const SkPath& p)
117 : INHERITED(m), fPath(p) {
120 SkPath2DPathEffect::SkPath2DPathEffect(SkReadBuffer& buffer)
121 : INHERITED(buffer) {
122 buffer.readPath(&fPath);
125 void SkPath2DPathEffect::flatten(SkWriteBuffer& buffer) const {
126 this->INHERITED::flatten(buffer);
127 buffer.writePath(fPath);
130 void SkPath2DPathEffect::next(const SkPoint& loc, int u, int v,
132 dst->addPath(fPath, loc.fX, loc.fY);