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
|
#include "Kernel_type.h"
#include "SMesh_type.h"
#include "Scene_points_with_normal_item.h"
#include "Scene_polygon_soup_item.h"
#include "Point_set_3.h"
#include <CGAL/compute_average_spacing.h>
#include <CGAL/Scale_space_surface_reconstruction_3.h>
#include <CGAL/Scale_space_reconstruction_3/Advancing_front_mesher.h>
#include <CGAL/Scale_space_reconstruction_3/Jet_smoother.h>
#include <CGAL/Scale_space_reconstruction_3/Alpha_shape_mesher.h>
#include <CGAL/Scale_space_reconstruction_3/Weighted_PCA_smoother.h>
// Concurrency
typedef CGAL::Parallel_if_available_tag Concurrency_tag;
typedef CGAL::Scale_space_surface_reconstruction_3<Kernel> ScaleSpace;
typedef CGAL::Scale_space_reconstruction_3::Advancing_front_mesher<Kernel> ScaleSpaceAFM;
typedef CGAL::Scale_space_reconstruction_3::Alpha_shape_mesher<Kernel> ScaleSpaceASM;
typedef CGAL::Scale_space_reconstruction_3::Jet_smoother<Kernel> ScaleSpaceJS;
typedef CGAL::Scale_space_reconstruction_3::Weighted_PCA_smoother<Kernel> ScaleSpaceWPS;
void scale_space (const Point_set& points,
std::vector<Scene_polygon_soup_item*>& items,
bool jet_smoother,
unsigned int iterations,
unsigned int neighbors, unsigned int fitting, unsigned int monge,
unsigned int neighborhood_size, unsigned int samples,
bool advancing_front_mesher,
bool generate_smooth,
double longest_edge, double radius_ratio_bound, double beta_angle,
bool separate_shells, bool force_manifold)
{
ScaleSpace reconstruct (points.points().begin(), points.points().end());
double squared_radius = 0.;
if (jet_smoother)
{
ScaleSpaceJS smoother(neighbors, fitting, monge);
reconstruct.increase_scale(iterations, smoother);
if (!advancing_front_mesher)
squared_radius = CGAL::compute_average_spacing<Concurrency_tag> (points, neighbors);
}
else
{
ScaleSpaceWPS smoother(neighborhood_size, samples);
reconstruct.increase_scale(iterations, smoother);
squared_radius = smoother.squared_radius();
}
if (advancing_front_mesher)
{
ScaleSpaceAFM mesher (longest_edge, radius_ratio_bound, beta_angle);
reconstruct.reconstruct_surface (mesher);
Scene_polygon_soup_item* new_item
= new Scene_polygon_soup_item ();
new_item->setColor(Qt::lightGray);
new_item->setRenderingMode(FlatPlusEdges);
new_item->init_polygon_soup(points.size(), reconstruct.number_of_facets ());
Scene_polygon_soup_item* smooth_item = nullptr;
if (generate_smooth)
{
smooth_item = new Scene_polygon_soup_item ();
smooth_item->setColor(Qt::lightGray);
smooth_item->setRenderingMode(FlatPlusEdges);
smooth_item->init_polygon_soup(points.size(), reconstruct.number_of_facets ());
}
std::map<std::size_t, std::size_t> map_i2i;
std::size_t current_index = 0;
for (ScaleSpace::Facet_iterator it = reconstruct.facets_begin();
it != reconstruct.facets_end(); ++ it)
{
for (unsigned int ind = 0; ind < 3; ++ ind)
{
if (map_i2i.find ((*it)[ind]) == map_i2i.end ())
{
map_i2i.insert (std::make_pair ((*it)[ind], current_index ++));
Point_3 p = points.point(*(points.begin_or_selection_begin() + (*it)[ind]));
new_item->new_vertex (p.x (), p.y (), p.z ());
if (generate_smooth)
{
p = *(reconstruct.points_begin() + (*it)[ind]);
smooth_item->new_vertex (p.x (), p.y (), p.z ());
}
}
}
new_item->new_triangle( map_i2i[(*it)[0]],
map_i2i[(*it)[1]],
map_i2i[(*it)[2]] );
if (generate_smooth)
smooth_item->new_triangle( map_i2i[(*it)[0]],
map_i2i[(*it)[1]],
map_i2i[(*it)[2]] );
}
items.push_back(new_item);
if (generate_smooth)
items.push_back (smooth_item);
}
else
{
ScaleSpaceASM mesher (squared_radius, separate_shells, force_manifold);
reconstruct.reconstruct_surface (mesher);
for( unsigned int sh = 0; sh < mesher.number_of_shells(); ++sh )
{
Scene_polygon_soup_item* new_item
= new Scene_polygon_soup_item ();
new_item->setColor(Qt::lightGray);
new_item->setRenderingMode(FlatPlusEdges);
new_item->init_polygon_soup(points.size(), mesher.number_of_triangles ());
Scene_polygon_soup_item* smooth_item = nullptr;
if (generate_smooth)
{
smooth_item = new Scene_polygon_soup_item ();
smooth_item->setColor(Qt::lightGray);
smooth_item->setRenderingMode(FlatPlusEdges);
smooth_item->init_polygon_soup(points.size(), mesher.number_of_triangles ());
}
std::map<unsigned int, unsigned int> map_i2i;
unsigned int current_index = 0;
for (ScaleSpaceASM::Facet_iterator it = mesher.shell_begin (sh);
it != mesher.shell_end (sh); ++ it)
{
for (unsigned int ind = 0; ind < 3; ++ ind)
{
if (map_i2i.find ((*it)[ind]) == map_i2i.end ())
{
map_i2i.insert (std::make_pair ((*it)[ind], current_index ++));
Point_3 p = points.point(*(points.begin_or_selection_begin() + (*it)[ind]));
new_item->new_vertex (p.x (), p.y (), p.z ());
if (generate_smooth)
{
p = *(reconstruct.points_begin() + (*it)[ind]);
smooth_item->new_vertex (p.x (), p.y (), p.z ());
}
}
}
new_item->new_triangle( map_i2i[(*it)[0]],
map_i2i[(*it)[1]],
map_i2i[(*it)[2]] );
if (generate_smooth)
smooth_item->new_triangle( map_i2i[(*it)[0]],
map_i2i[(*it)[1]],
map_i2i[(*it)[2]] );
}
items.push_back (new_item);
if (generate_smooth)
items.push_back (smooth_item);
}
if (force_manifold)
{
std::ptrdiff_t num = std::distance( mesher.garbage_begin( ),
mesher.garbage_end( ) );
Scene_polygon_soup_item* new_item
= new Scene_polygon_soup_item ();
new_item->setColor(Qt::blue);
new_item->setRenderingMode(FlatPlusEdges);
new_item->init_polygon_soup(points.size(), num);
Scene_polygon_soup_item* smooth_item = nullptr;
if (generate_smooth)
{
smooth_item = new Scene_polygon_soup_item ();
smooth_item->setColor(Qt::blue);
smooth_item->setRenderingMode(FlatPlusEdges);
smooth_item->init_polygon_soup(points.size(), num);
}
std::map<std::size_t, std::size_t> map_i2i;
std::size_t current_index = 0;
for (ScaleSpaceASM::Facet_iterator it=mesher.garbage_begin(),
end=mesher.garbage_end();it!=end;++it)
{
for (unsigned int ind = 0; ind < 3; ++ ind)
{
if (map_i2i.find ((*it)[ind]) == map_i2i.end ())
{
map_i2i.insert (std::make_pair ((*it)[ind], current_index ++));
Point_3 p = points.point(*(points.begin_or_selection_begin() + (*it)[ind]));
new_item->new_vertex (p.x (), p.y (), p.z ());
if (generate_smooth)
{
p = *(reconstruct.points_begin() + (*it)[ind]);
smooth_item->new_vertex (p.x (), p.y (), p.z ());
}
}
}
new_item->new_triangle( map_i2i[(*it)[0]],
map_i2i[(*it)[1]],
map_i2i[(*it)[2]] );
if (generate_smooth)
smooth_item->new_triangle( map_i2i[(*it)[0]],
map_i2i[(*it)[1]],
map_i2i[(*it)[2]] );
}
items.push_back (new_item);
if (generate_smooth)
items.push_back (smooth_item);
}
}
}
|
