mirror of https://github.com/CGAL/cgal
87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
#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/Polyhedral_complex_mesh_domain_3.h>
|
|
#include <CGAL/make_mesh_3.h>
|
|
|
|
#include <cstdlib>
|
|
#include <cassert>
|
|
|
|
// Domain
|
|
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
|
|
typedef CGAL::Mesh_polyhedron_3<K>::type Polyhedron;
|
|
typedef CGAL::Polyhedral_complex_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,Mesh_domain::Corner_index,Mesh_domain::Curve_index> C3t3;
|
|
|
|
// Criteria
|
|
typedef CGAL::Mesh_criteria_3<Tr> Mesh_criteria;
|
|
|
|
// To avoid verbose function and named parameters call
|
|
using namespace CGAL::parameters;
|
|
|
|
const char* const filenames[] = {
|
|
"meshes/patch-01.off",
|
|
"meshes/patch-13.off",
|
|
"meshes/patch-20.off",
|
|
"meshes/patch-21.off",
|
|
"meshes/patch-23.off",
|
|
"meshes/patch-30.off"
|
|
};
|
|
|
|
const std::pair<int, int> incident_subdomains[] = {
|
|
std::make_pair(0, 1),
|
|
std::make_pair(1, 3),
|
|
std::make_pair(2, 0),
|
|
std::make_pair(2, 1),
|
|
std::make_pair(2, 3),
|
|
std::make_pair(3, 0),
|
|
};
|
|
|
|
int main()
|
|
{
|
|
const std::size_t nb_patches = sizeof(filenames) / sizeof(const char*);
|
|
assert(sizeof(incident_subdomains) == nb_patches * sizeof(std::pair<int, int>));
|
|
std::vector<Polyhedron> patches(nb_patches);
|
|
for(std::size_t i = 0; i < nb_patches; ++i) {
|
|
std::ifstream input(CGAL::data_file_path(filenames[i]));
|
|
if(!(input >> patches[i])) {
|
|
std::cerr << "Error reading " << CGAL::data_file_path(filenames[i]) << " as a polyhedron!\n";
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
// Create domain
|
|
Mesh_domain domain(patches.begin(), patches.end(),
|
|
incident_subdomains, incident_subdomains+nb_patches);
|
|
|
|
domain.detect_features(); //includes detection of borders
|
|
|
|
// Mesh criteria
|
|
Mesh_criteria criteria(edge_size = 8,
|
|
facet_angle = 25, facet_size = 8, facet_distance = 0.2,
|
|
cell_radius_edge_ratio = 3, cell_size = 10);
|
|
|
|
// Mesh generation
|
|
C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria);
|
|
|
|
// Output
|
|
std::ofstream medit_file("out.mesh");
|
|
c3t3.output_to_medit(medit_file);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|