1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
/*
* 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.
*/
#include "Sk2DPathEffect.h"
#include "SkFlattenableBuffers.h"
#include "SkPath.h"
#include "SkRegion.h"
Sk2DPathEffect::Sk2DPathEffect(const SkMatrix& mat) : fMatrix(mat) {
fMatrixIsInvertible = mat.invert(&fInverse);
}
bool Sk2DPathEffect::filterPath(SkPath* dst, const SkPath& src, SkStrokeRec*) {
if (!fMatrixIsInvertible) {
return false;
}
SkPath tmp;
SkIRect ir;
src.transform(fInverse, &tmp);
tmp.getBounds().round(&ir);
if (!ir.isEmpty()) {
this->begin(ir, dst);
SkRegion rgn;
rgn.setPath(tmp, SkRegion(ir));
SkRegion::Iterator iter(rgn);
for (; !iter.done(); iter.next()) {
const SkIRect& rect = iter.rect();
for (int y = rect.fTop; y < rect.fBottom; ++y) {
this->nextSpan(rect.fLeft, y, rect.width(), dst);
}
}
this->end(dst);
}
return true;
}
void Sk2DPathEffect::nextSpan(int x, int y, int count, SkPath* path) {
if (!fMatrixIsInvertible) {
return;
}
const SkMatrix& mat = this->getMatrix();
SkPoint src, dst;
src.set(SkIntToScalar(x) + SK_ScalarHalf, SkIntToScalar(y) + SK_ScalarHalf);
do {
mat.mapPoints(&dst, &src, 1);
this->next(dst, x++, y, path);
src.fX += SK_Scalar1;
} while (--count > 0);
}
void Sk2DPathEffect::begin(const SkIRect& uvBounds, SkPath* dst) {}
void Sk2DPathEffect::next(const SkPoint& loc, int u, int v, SkPath* dst) {}
void Sk2DPathEffect::end(SkPath* dst) {}
///////////////////////////////////////////////////////////////////////////////
void Sk2DPathEffect::flatten(SkFlattenableWriteBuffer& buffer) const {
this->INHERITED::flatten(buffer);
buffer.writeMatrix(fMatrix);
}
Sk2DPathEffect::Sk2DPathEffect(SkFlattenableReadBuffer& buffer) {
buffer.readMatrix(&fMatrix);
fMatrixIsInvertible = fMatrix.invert(&fInverse);
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
SkPath2DPathEffect::SkPath2DPathEffect(const SkMatrix& m, const SkPath& p)
: INHERITED(m), fPath(p) {
}
SkPath2DPathEffect::SkPath2DPathEffect(SkFlattenableReadBuffer& buffer)
: INHERITED(buffer) {
buffer.readPath(&fPath);
}
void SkPath2DPathEffect::flatten(SkFlattenableWriteBuffer& buffer) const {
this->INHERITED::flatten(buffer);
buffer.writePath(fPath);
}
void SkPath2DPathEffect::next(const SkPoint& loc, int u, int v, SkPath* dst) {
dst->addPath(fPath, loc.fX, loc.fY);
}
///////////////////////////////////////////////////////////////////////////////
SK_DEFINE_FLATTENABLE_REGISTRAR(SkPath2DPathEffect)
|
