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
|
#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>
// Domain
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef CGAL::Labeled_mesh_domain_3<K> 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;
// Mesh Criteria
typedef CGAL::Mesh_criteria_3<Tr> Mesh_criteria;
namespace params = CGAL::parameters;
int main(int argc, char* argv[])
{
const std::string fname = (argc>1)?argv[1]:CGAL::data_file_path("images/liver.inr.gz");
// Domain
CGAL::Image_3 image;
if(!image.read(fname)){
std::cerr << "Error: Cannot read file " << fname << std::endl;
return EXIT_FAILURE;
}
Mesh_domain domain = Mesh_domain::create_labeled_image_mesh_domain(image);
// Mesh criteria
Mesh_criteria criteria(params::facet_angle(30).facet_size(5).facet_distance(1.5).
cell_radius_edge_ratio(2).cell_size(7));
// Mesh generation and optimization in one call (sliver_bound is the
// targeted dihedral angle in degrees)
C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria,
params::no_exude().
perturb(params::sliver_bound(10).time_limit(15)));
// Mesh generation and optimization in several call
C3t3 c3t3_bis = CGAL::make_mesh_3<C3t3>(domain, criteria,
params::no_perturb().no_exude());
CGAL::perturb_mesh_3(c3t3_bis, domain, params::time_limit(15));
// Output
std::ofstream medit_file("out.mesh");
CGAL::IO::write_MEDIT(medit_file, c3t3);
medit_file.close();
std::ofstream medit_file_bis("out_bis.mesh");
CGAL::IO::write_MEDIT(medit_file_bis, c3t3_bis);
medit_file_bis.close();
return 0;
}
|
