CGAL 5.1 - 3D Mesh Generation
Mesh_3/mesh_implicit_sphere.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/Labeled_mesh_domain_3.h>
#include <CGAL/make_mesh_3.h>
// Domain
typedef K::FT FT;
typedef K::Point_3 Point;
typedef FT (Function)(const Point&);
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
// Criteria
typedef CGAL::Mesh_criteria_3<Tr> Mesh_criteria;
// To avoid verbose function and named parameters call
using namespace CGAL::parameters;
// Function
FT sphere_function (const Point& p)
{ return CGAL::squared_distance(p, Point(CGAL::ORIGIN))-1; }
int main()
{
Mesh_domain domain =
Mesh_domain::create_implicit_mesh_domain(sphere_function,
K::Sphere_3(CGAL::ORIGIN, 2.));
// Mesh criteria
Mesh_criteria criteria(facet_angle=30, facet_size=0.1, facet_distance=0.025,
cell_radius_edge_ratio=2, cell_size=0.1);
// 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 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::Parallel_tag
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::squared_distance
Kernel::FT squared_distance(Type1< Kernel > obj1, Type2< Kernel > obj2)
CGAL::Mesh_criteria_3
Definition: Mesh_criteria_3.h:55
CGAL::ORIGIN
const CGAL::Origin ORIGIN
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::Sequential_tag