CGAL 5.1 - 3D Mesh Generation
Mesh_3/mesh_implicit_domains.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/Implicit_to_labeling_function_wrapper.h>
#include <CGAL/Labeled_mesh_domain_3.h>
#include <CGAL/make_mesh_3.h>
#include "implicit_functions.h"
// IO
#include <CGAL/IO/File_medit.h>
using namespace CGAL::parameters;
// Domain
typedef FT_to_point_function_wrapper<K::FT, K::Point_3> Function;
Function_wrapper;
typedef Function_wrapper::Function_vector Function_vector;
typedef CGAL::Labeled_mesh_domain_3<K> Mesh_domain;
// Triangulation
// Mesh Criteria
typedef CGAL::Mesh_criteria_3<Tr> Mesh_criteria;
typedef Mesh_criteria::Facet_criteria Facet_criteria;
typedef Mesh_criteria::Cell_criteria Cell_criteria;
int main()
{
// Define functions
Function f1(&torus_function);
Function f2(&sphere_function<3>);
Function_vector v;
v.push_back(f1);
v.push_back(f2);
// Domain (Warning: Sphere_3 constructor uses square radius !)
Mesh_domain domain(Function_wrapper(v), K::Sphere_3(CGAL::ORIGIN, 5.*5.), 1e-6);
// Set mesh criteria
Facet_criteria facet_criteria(30, 0.2, 0.02); // angle, size, approximation
Cell_criteria cell_criteria(2., 0.4); // radius-edge ratio, size
Mesh_criteria criteria(facet_criteria, cell_criteria);
// Mesh generation
C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria, no_exude(), no_perturb());
// Perturbation (maximum cpu time: 10s, targeted dihedral angle: default)
CGAL::perturb_mesh_3(c3t3, domain, time_limit = 10);
// Exudation
// Output
std::ofstream medit_file("out.mesh");
CGAL::output_to_medit(medit_file, c3t3);
return 0;
}
CGAL::Labeled_mesh_domain_3
The class Labeled_mesh_domain_3 implements indexed domains.
Definition: Labeled_mesh_domain_3.h:58
CGAL::Exact_predicates_inexact_constructions_kernel
CGAL::Mesh_triangulation_3::type
unspecified_type type
The triangulation type to be used for the 3D triangulation embedding the mesh.
Definition: Mesh_triangulation_3.h:52
CGAL::exude_mesh_3
Mesh_optimization_return_code exude_mesh_3(C3T3 &c3t3, double parameters::time_limit=0, double parameters::sliver_bound=0)
CGAL::Mesh_criteria_3
Definition: Mesh_criteria_3.h:55
CGAL::perturb_mesh_3
Mesh_optimization_return_code perturb_mesh_3(C3T3 &c3t3, const MD &domain, double parameters::time_limit=0, double parameters::sliver_bound=0)
CGAL::ORIGIN
const CGAL::Origin ORIGIN
CGAL::output_to_medit
void output_to_medit(std::ostream &os, const C3T3 &c3t3, bool rebind=false, bool show_patches=false)
Outputs a mesh complex to the medit (.mesh) file format. See for a comprehensive description of this...
CGAL::parameters::no_perturb
parameters::internal::Perturb_options no_perturb()
CGAL::parameters
Definition: refine_mesh_3.h:161
CGAL::Mesh_complex_3_in_triangulation_3
Definition: Mesh_complex_3_in_triangulation_3.h:41
CGAL::Implicit_multi_domain_to_labeling_function_wrapper
Definition: Implicit_to_labeling_function_wrapper.h:25
CGAL::parameters::no_exude
parameters::internal::Exude_options no_exude()