CGAL 6.2 - 3D Mesh Generation

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Mesh_3/mesh_polyhedral_domain_with_features_sizing.cpp
#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/Surface_mesh.h>
#include <CGAL/Polyhedral_mesh_domain_with_features_3.h>
#include <CGAL/make_mesh_3.h>
#include <CGAL/Sizing_field_with_aabb_tree.h>
// Domain
using K = CGAL::Exact_predicates_inexact_constructions_kernel;
using Polyhedron = CGAL::Surface_mesh<K::Point_3>;
using Mesh_domain = CGAL::Polyhedral_mesh_domain_with_features_3<K, Polyhedron>;
using Features_sizing_field = CGAL::Sizing_field_with_aabb_tree<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;
namespace params = CGAL::parameters;
int main(int argc, char*argv[])
{
const std::string fname = (argc>1)?argv[1]:CGAL::data_file_path("meshes/fandisk.off");
std::ifstream input(fname);
Polyhedron polyhedron;
input >> polyhedron;
if(input.fail()){
std::cerr << "Error: Cannot read file " << fname << std::endl;
return EXIT_FAILURE;
}
// Create domain
Mesh_domain domain(polyhedron);
// Get sharp features
domain.detect_features();
// Mesh criteria
Features_sizing_field edges_sizing_field(0.07, domain);
Mesh_criteria criteria(params::edge_size(edges_sizing_field).
facet_distance(0.0072).
cell_radius_edge_ratio(3));
// Mesh generation
C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria, params::no_exude().no_perturb());
// Output
CGAL::dump_c3t3(c3t3, "out_sizing_field_with_aabb_tree");
return EXIT_SUCCESS;
}
CGAL::Exact_predicates_inexact_constructions_kernel
CGAL::Mesh_complex_3_in_triangulation_3
CGAL::Mesh_criteria_3
The class gathers the refinement criteria for mesh tetrahedra and surface facets where surface facets...
Definition: Mesh_criteria_3.h:186
CGAL::Polyhedral_mesh_domain_with_features_3
The class Polyhedral_mesh_domain_with_features_3 implements a domain whose boundary is a simplicial p...
Definition: Polyhedral_mesh_domain_with_features_3.h:114
unspecified_type
CGAL::parameters
CGAL::Parallel_tag
CGAL::Sequential_tag
CGAL::Sizing_field_with_aabb_tree
The class Sizing_field_with_aabb_tree is a model of concept MeshDomainField_3.
Definition: Sizing_field_with_aabb_tree.h:90