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
|
#include "random_labeled_image.h"
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Mesh_triangulation_3.h>
#include <CGAL/Mesh_complex_3_in_triangulation_3.h>
#include <CGAL/Mesh_criteria_3.h>
#include <CGAL/Labeled_mesh_domain_3.h>
#include <CGAL/make_mesh_3.h>
#include <CGAL/Image_3.h>
#include <CGAL/Mesh_3/Detect_features_in_image.h>
#include <CGAL/IO/File_medit.h>
// Domain
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef CGAL::Labeled_mesh_domain_3<K> Image_domain;
typedef CGAL::Mesh_domain_with_polyline_features_3<Image_domain> Mesh_domain;
#ifdef CGAL_CONCURRENT_MESH_3
typedef CGAL::Parallel_tag Concurrency_tag;
#else
typedef CGAL::Sequential_tag Concurrency_tag;
#endif
// Triangulation
typedef CGAL::Mesh_triangulation_3<Mesh_domain,CGAL::Default,Concurrency_tag>::type Tr;
typedef CGAL::Mesh_complex_3_in_triangulation_3<Tr> C3t3;
// Criteria
typedef CGAL::Mesh_criteria_3<Tr> Mesh_criteria;
namespace params = CGAL::parameters;
int main()
{
const std::string fname = CGAL::data_file_path("images/420.inr");
// Loads image
CGAL::Image_3 image;
if(!image.read(fname)){
std::cerr << "Error: Cannot read file " << fname << std::endl;
return EXIT_FAILURE;
}
// Domain
Mesh_domain domain = Mesh_domain::create_labeled_image_mesh_domain(image
, params::features_detector(CGAL::Mesh_3::Detect_features_in_image()));
// Mesh criteria
Mesh_criteria criteria(params::facet_angle(30).facet_size(3).facet_distance(1).edge_size(3)
.cell_radius_edge_ratio(3).cell_size(3));
using Point_3 = K::Point_3;
using Weighted_point_3 = K::Weighted_point_3;
using Index = Mesh_domain::Index;
using Initial_point_t = std::tuple<Weighted_point_3, int, Index>;
// Creation of the initial_points vector
std::vector<Initial_point_t> initial_points = {
{Weighted_point_3(Point_3(30.0, 50.0, 83.33), 30.0), 1, Index(1)},
{Weighted_point_3(Point_3(70.0, 50.0, 83.33), 50.0), 1, Index(1)}
};
/// [Meshing]
// Mesh generation from labeled image with initial points.
C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria,
params::initial_points(std::cref(initial_points)));
/// [Meshing]
// Output
std::ofstream ofs("out.mesh");
CGAL::IO::write_MEDIT(ofs, c3t3);
return 0;
}
|
