CGAL 5.1 - 3D Mesh Generation
Mesh_3/remesh_polyhedral_surface.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/Polyhedral_mesh_domain_with_features_3.h>
#include <CGAL/make_mesh_3.h>
// Domain
// Polyhedron type
// Triangulation
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;
int main()
{
// Load a polyhedron
Polyhedron poly;
std::ifstream input("data/lion-head.off");
input >> poly;
std::cerr << "Input geometry is not triangulated." << std::endl;
return EXIT_FAILURE;
}
// Create a vector with only one element: the pointer to the polyhedron.
std::vector<Polyhedron*> poly_ptrs_vector(1, &poly);
// Create a polyhedral domain, with only one polyhedron,
// and no "bounding polyhedron", so the volumetric part of the domain will be
// empty.
Mesh_domain domain(poly_ptrs_vector.begin(), poly_ptrs_vector.end());
// Get sharp features
domain.detect_features(); //includes detection of borders
// Mesh criteria
Mesh_criteria criteria(edge_size = 0.025,
facet_angle = 25,
facet_size = 0.1,
facet_distance = 0.001);
// Mesh generation
C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria, no_perturb(), no_exude());
// Output the facets of the c3t3 to an OFF file. The facets will not be
// oriented.
std::ofstream off_file("out.off");
c3t3.output_boundary_to_off(off_file);
return off_file.fail() ? EXIT_FAILURE : EXIT_SUCCESS;
}
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::Mesh_criteria_3
Definition: Mesh_criteria_3.h:55
CGAL::is_triangle_mesh
bool is_triangle_mesh(const FaceGraph &g)
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::Mesh_polyhedron_3::type
unspecified_type type
CGAL::Polyhedron_3<IGT> type with customized PolyhedronItems_3 designed to handle sharp feature detec...
Definition: Mesh_polyhedron_3.h:29
CGAL::parameters::no_exude
parameters::internal::Exude_options no_exude()
CGAL::Polyhedral_mesh_domain_with_features_3
Definition: Polyhedral_mesh_domain_with_features_3.h:30