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
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
// SPDX-License-Identifier: GPL-2.0-or-later
/** @file
* Path utilities.
*//*
* Authors:
* see git history
* Created by fred on Fri Dec 05 2003.
* tweaked endlessly by bulia byak <buliabyak@users.sf.net>
*
* Copyright (C) 2018 Authors
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#ifdef HAVE_CONFIG_H
#endif
#include <vector>
#include "path-util.h"
#include "text-editing.h"
#include "livarot/Path.h"
#include "livarot/Shape.h"
#include "object/sp-flowtext.h"
#include "object/sp-image.h"
#include "object/sp-marker.h"
#include "object/sp-path.h"
#include "object/sp-text.h"
#include "display/curve.h"
// derived from Path_for_item
Path *
Path_for_pathvector(Geom::PathVector const &epathv)
{
/*std::cout << "converting to Livarot path" << std::endl;
Geom::SVGPathWriter wr;
wr.feed(epathv);
std::cout << wr.str() << std::endl;*/
Path *dest = new Path;
dest->LoadPathVector(epathv);
return dest;
}
Path *
Path_for_item(SPItem *item, bool doTransformation, bool transformFull)
{
std::unique_ptr<SPCurve> curve = curve_for_item(item);
if (curve == nullptr)
return nullptr;
Geom::PathVector *pathv =
pathvector_for_curve(item, curve.get(), doTransformation, transformFull, Geom::identity(), Geom::identity());
/*std::cout << "converting to Livarot path" << std::endl;
Geom::SVGPathWriter wr;
if (pathv) {
wr.feed(*pathv);
}
std::cout << wr.str() << std::endl;*/
Path *dest = new Path;
dest->LoadPathVector(*pathv);
delete pathv;
/*gchar *str = dest->svg_dump_path();
std::cout << "After conversion:\n" << str << std::endl;
g_free(str);*/
return dest;
}
/**
* Obtains an item's Path before the LPE stack has been applied.
*/
Path *
Path_for_item_before_LPE(SPItem *item, bool doTransformation, bool transformFull)
{
std::unique_ptr<SPCurve> curve = curve_for_item_before_LPE(item);
if (curve == nullptr)
return nullptr;
Geom::PathVector *pathv =
pathvector_for_curve(item, curve.get(), doTransformation, transformFull, Geom::identity(), Geom::identity());
Path *dest = new Path;
dest->LoadPathVector(*pathv);
delete pathv;
return dest;
}
/*
* NOTE: Returns empty pathvector if curve == NULL
* TODO: see if calling this method can be optimized. All the pathvector copying might be slow.
*/
Geom::PathVector*
pathvector_for_curve(SPItem *item, SPCurve *curve, bool doTransformation, bool transformFull, Geom::Affine extraPreAffine, Geom::Affine extraPostAffine)
{
if (curve == nullptr)
return nullptr;
Geom::PathVector *dest = new Geom::PathVector;
*dest = curve->get_pathvector(); // Make a copy; must be freed by the caller!
if (doTransformation) {
if (transformFull) {
*dest *= extraPreAffine * item->i2doc_affine() * extraPostAffine;
} else {
*dest *= extraPreAffine * (Geom::Affine)item->transform * extraPostAffine;
}
} else {
*dest *= extraPreAffine * extraPostAffine;
}
return dest;
}
/**
* Obtains an item's curve. For SPPath, it is the path *before* LPE. For SPShapes other than path, it is the path *after* LPE.
* So the result is somewhat ill-defined, and probably this method should not be used... See curve_for_item_before_LPE.
*/
std::unique_ptr<SPCurve> curve_for_item(SPItem *item)
{
if (!item)
return nullptr;
std::unique_ptr<SPCurve> curve;
if (auto path = dynamic_cast<SPPath const *>(item)) {
curve = SPCurve::copy(path->curveForEdit());
} else if (auto shape = dynamic_cast<SPShape const *>(item)) {
curve = SPCurve::copy(shape->curve());
} else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
curve = te_get_layout(item)->convertToCurves();
} else if (auto image = dynamic_cast<SPImage const *>(item)) {
curve = image->get_curve();
}
return curve;
}
/**
* Obtains an item's curve *before* LPE.
*/
std::unique_ptr<SPCurve> curve_for_item_before_LPE(SPItem *item)
{
if (!item)
return nullptr;
std::unique_ptr<SPCurve> curve;
if (auto shape = dynamic_cast<SPShape const *>(item)) {
curve = SPCurve::copy(shape->curveForEdit());
} else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
curve = te_get_layout(item)->convertToCurves();
} else if (auto image = dynamic_cast<SPImage const *>(item)) {
curve = image->get_curve();
}
return curve;
}
std::optional<Path::cut_position> get_nearest_position_on_Path(Path *path, Geom::Point p, unsigned seg)
{
std::optional<Path::cut_position> result;
if (!path) {
return result; // returns empty std::optional
}
//get nearest position on path
result = path->PointToCurvilignPosition(p, seg);
return result;
}
Geom::Point get_point_on_Path(Path *path, int piece, double t)
{
Geom::Point p;
path->PointAt(piece, t, p);
return p;
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
|
