CGAL 5.6.3 - Tetrahedral Remeshing

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Tetrahedral_remeshing/tetrahedral_remeshing_with_features.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Tetrahedral_remeshing/Remeshing_triangulation_3.h>
#include <CGAL/tetrahedral_remeshing.h>
#include <CGAL/property_map.h>
#include <unordered_set>
#include <iostream>
#include <utility>
#include <cassert>
#include "tetrahedral_remeshing_generate_input.h"
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef CGAL::Tetrahedral_remeshing::Remeshing_triangulation_3<K> Remeshing_triangulation;
typedef Remeshing_triangulation::Point Point;
typedef Remeshing_triangulation::Vertex_handle Vertex_handle;
typedef Remeshing_triangulation::Cell_handle Cell_handle;
typedef Remeshing_triangulation::Edge Edge;
class Constrained_edges_property_map
{
public:
typedef bool value_type;
typedef bool reference;
typedef std::pair<Vertex_handle, Vertex_handle> key_type;
typedef boost::read_write_property_map_tag category;
private:
std::unordered_set<key_type, boost::hash<key_type>>* m_set_ptr;
public:
Constrained_edges_property_map()
: m_set_ptr(nullptr)
{}
Constrained_edges_property_map(std::unordered_set<key_type, boost::hash<key_type>>* set_)
: m_set_ptr(set_)
{}
public:
friend void put(Constrained_edges_property_map& map,
const key_type& k,
const bool b)
{
assert(map.m_set_ptr != nullptr);
assert(k.first < k.second);
if (b) map.m_set_ptr->insert(k);
else map.m_set_ptr->erase(k);
}
friend value_type get(const Constrained_edges_property_map& map,
const key_type& k)
{
assert(map.m_set_ptr != nullptr);
assert(k.first < k.second);
return (map.m_set_ptr->count(k) > 0);
}
};
void set_subdomain(Remeshing_triangulation& tr, const int index)
{
for (auto cit : tr.finite_cell_handles())
cit->set_subdomain_index(index);
}
int main(int argc, char* argv[])
{
const double target_edge_length = (argc > 1) ? atof(argv[1]) : 0.02;
const int nb_iter = (argc > 2) ? atoi(argv[2]) : 1;
const int nbv = (argc > 3) ? atoi(argv[3]) : 500;
Remeshing_triangulation t3;
typedef std::pair<Vertex_handle, Vertex_handle> Vertex_pair;
std::unordered_set<Vertex_pair, boost::hash<Vertex_pair>> constraints;
CGAL::Tetrahedral_remeshing::generate_input_cube(nbv, t3, constraints);
make_constraints_from_cube_edges(t3, constraints);
CGAL::tetrahedral_isotropic_remeshing(t3, target_edge_length,
CGAL::parameters::edge_is_constrained_map(
Constrained_edges_property_map(&constraints))
.number_of_iterations(nb_iter));
return EXIT_SUCCESS;
}
CGAL::Exact_predicates_inexact_constructions_kernel
CGAL::Tetrahedral_remeshing::Remeshing_triangulation_3
The class Remeshing_triangulation_3 is a class template which provides a valid triangulation type tha...
Definition: Remeshing_triangulation_3.h:59
CGAL::tetrahedral_isotropic_remeshing
void tetrahedral_isotropic_remeshing(CGAL::Triangulation_3< Traits, TDS, SLDS > &tr, const double &target_edge_length, const NamedParameters &np=parameters::default_values())
remeshes a tetrahedral mesh.
Definition: tetrahedral_remeshing.h:165