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
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
#include <glibmm.h>
#include "attributes.h"
#include "display/cairo-utils.h"
#include "xml/repr.h"
#include "sp-mesh.h"
/*
* Mesh Gradient
*/
//#define MESH_DEBUG
SPMesh::SPMesh() : SPGradient(), type( SP_MESH_TYPE_COONS ), type_set(false) {
// Start coordinate of mesh
this->x.unset(SVGLength::NONE, 0.0, 0.0);
this->y.unset(SVGLength::NONE, 0.0, 0.0);
}
SPMesh::~SPMesh() {
}
void SPMesh::build(SPDocument *document, Inkscape::XML::Node *repr) {
SPGradient::build(document, repr);
// Start coordinate of mesh
this->readAttr( "x" );
this->readAttr( "y" );
this->readAttr( "type" );
}
void SPMesh::set(unsigned key, gchar const *value) {
switch (key) {
case SP_ATTR_X:
if (!this->x.read(value)) {
this->x.unset(SVGLength::NONE, 0.0, 0.0);
}
this->requestModified(SP_OBJECT_MODIFIED_FLAG);
break;
case SP_ATTR_Y:
if (!this->y.read(value)) {
this->y.unset(SVGLength::NONE, 0.0, 0.0);
}
this->requestModified(SP_OBJECT_MODIFIED_FLAG);
break;
case SP_ATTR_TYPE:
if (value) {
if (!strcmp(value, "coons")) {
this->type = SP_MESH_TYPE_COONS;
} else if (!strcmp(value, "bicubic")) {
this->type = SP_MESH_TYPE_BICUBIC;
} else {
std::cerr << "SPMesh::set(): invalid value " << value << std::endl;
}
this->type_set = TRUE;
} else {
// std::cout << "SPMesh::set() No value " << std::endl;
this->type = SP_MESH_TYPE_COONS;
this->type_set = FALSE;
}
this->requestModified(SP_OBJECT_MODIFIED_FLAG);
break;
default:
SPGradient::set(key, value);
break;
}
}
/**
* Write mesh gradient attributes to associated repr.
*/
Inkscape::XML::Node* SPMesh::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
#ifdef MESH_DEBUG
std::cout << "sp_mesh_write() ***************************" << std::endl;
#endif
if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
repr = xml_doc->createElement("svg:mesh");
}
if ((flags & SP_OBJECT_WRITE_ALL) || this->x._set) {
sp_repr_set_svg_double(repr, "x", this->x.computed);
}
if ((flags & SP_OBJECT_WRITE_ALL) || this->y._set) {
sp_repr_set_svg_double(repr, "y", this->y.computed);
}
if ((flags & SP_OBJECT_WRITE_ALL) || this->type_set) {
switch (this->type) {
case SP_MESH_TYPE_COONS:
repr->setAttribute("type", "coons");
break;
case SP_MESH_TYPE_BICUBIC:
repr->setAttribute("type", "bicubic");
break;
default:
// Do nothing
break;
}
}
SPGradient::write(xml_doc, repr, flags);
return repr;
}
void
sp_mesh_repr_write(SPMesh *mg)
{
mg->array.write( mg );
}
cairo_pattern_t* SPMesh::pattern_new(cairo_t * /*ct*/,
#if defined(MESH_DEBUG) || (CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 11, 4))
Geom::OptRect const &bbox,
double opacity
#else
Geom::OptRect const & /*bbox*/,
double /*opacity*/
#endif
)
{
using Geom::X;
using Geom::Y;
#ifdef MESH_DEBUG
std::cout << "sp_mesh_create_pattern: (" << bbox->x0 << "," << bbox->y0 << ") (" << bbox->x1 << "," << bbox->y1 << ") " << opacity << std::endl;
#endif
this->ensureArray();
cairo_pattern_t *cp = NULL;
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 11, 4)
SPMeshNodeArray* my_array = &array;
if( type_set ) {
switch (type) {
case SP_MESH_TYPE_COONS:
// std::cout << "SPMesh::pattern_new: Coons" << std::endl;
break;
case SP_MESH_TYPE_BICUBIC:
array.bicubic( &array_smoothed, type );
my_array = &array_smoothed;
break;
}
}
cp = cairo_pattern_create_mesh();
for( unsigned int i = 0; i < my_array->patch_rows(); ++i ) {
for( unsigned int j = 0; j < my_array->patch_columns(); ++j ) {
SPMeshPatchI patch( &(my_array->nodes), i, j );
cairo_mesh_pattern_begin_patch( cp );
cairo_mesh_pattern_move_to( cp, patch.getPoint( 0, 0 )[X], patch.getPoint( 0, 0 )[Y] );
for( unsigned int k = 0; k < 4; ++k ) {
#ifdef DEBUG_MESH
std::cout << i << " " << j << " "
<< patch.getPathType( k ) << " (";
for( int p = 0; p < 4; ++p ) {
std::cout << patch.getPoint( k, p );
}
std::cout << ") "
<< patch.getColor( k ).toString() << std::endl;
#endif
switch ( patch.getPathType( k ) ) {
case 'l':
case 'L':
case 'z':
case 'Z':
cairo_mesh_pattern_line_to( cp,
patch.getPoint( k, 3 )[X],
patch.getPoint( k, 3 )[Y] );
break;
case 'c':
case 'C':
{
std::vector< Geom::Point > pts = patch.getPointsForSide( k );
cairo_mesh_pattern_curve_to( cp,
pts[1][X], pts[1][Y],
pts[2][X], pts[2][Y],
pts[3][X], pts[3][Y] );
break;
}
default:
// Shouldn't happen
std::cout << "sp_mesh_create_pattern: path error" << std::endl;
}
if( patch.tensorIsSet(k) ) {
// Tensor point defined relative to corner.
Geom::Point t = patch.getTensorPoint(k);
cairo_mesh_pattern_set_control_point( cp, k, t[X], t[Y] );
//std::cout << " sp_mesh_create_pattern: tensor " << k
// << " set to " << t << "." << std::endl;
} else {
// Geom::Point t = patch.coonsTensorPoint(k);
//std::cout << " sp_mesh_create_pattern: tensor " << k
// << " calculated as " << t << "." <<std::endl;
}
cairo_mesh_pattern_set_corner_color_rgba(
cp, k,
patch.getColor( k ).v.c[0],
patch.getColor( k ).v.c[1],
patch.getColor( k ).v.c[2],
patch.getOpacity( k ) * opacity );
}
cairo_mesh_pattern_end_patch( cp );
}
}
// set pattern matrix
Geom::Affine gs2user = this->gradientTransform;
if (this->getUnits() == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX) {
Geom::Affine bbox2user(bbox->width(), 0, 0, bbox->height(), bbox->left(), bbox->top());
gs2user *= bbox2user;
}
ink_cairo_pattern_set_matrix(cp, gs2user.inverse());
#else
static bool shown = false;
if( !shown ) {
std::cout << "sp_mesh_create_pattern: needs cairo >= 1.11.4, using "
<< cairo_version_string() << std::endl;
shown = true;
}
#endif
/*
cairo_pattern_t *cp = cairo_pattern_create_radial(
rg->fx.computed, rg->fy.computed, 0,
rg->cx.computed, rg->cy.computed, rg->r.computed);
sp_gradient_pattern_common_setup(cp, gr, bbox, opacity);
*/
return cp;
}
|
