mirror of https://github.com/CGAL/cgal
74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
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#include <CGAL/Mesh_triangulation_3.h>
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#include <CGAL/Mesh_complex_3_in_triangulation_3.h>
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#include <CGAL/Mesh_criteria_3.h>
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#include <CGAL/Implicit_to_labeling_function_wrapper.h>
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#include <CGAL/Labeled_mesh_domain_3.h>
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#include <CGAL/make_mesh_3.h>
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#include "implicit_functions.h"
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// IO
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#include <CGAL/IO/File_medit.h>
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// Domain
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typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
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typedef FT_to_point_function_wrapper<double, K::Point_3> Function;
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typedef CGAL::Implicit_multi_domain_to_labeling_function_wrapper<Function>
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Function_wrapper;
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typedef Function_wrapper::Function_vector Function_vector;
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typedef CGAL::Labeled_mesh_domain_3<K> Mesh_domain;
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// Triangulation
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typedef CGAL::Mesh_triangulation_3<Mesh_domain>::type Tr;
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typedef CGAL::Mesh_complex_3_in_triangulation_3<Tr> C3t3;
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// Mesh Criteria
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typedef CGAL::Mesh_criteria_3<Tr> Mesh_criteria;
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typedef Mesh_criteria::Facet_criteria Facet_criteria;
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typedef Mesh_criteria::Cell_criteria Cell_criteria;
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int main()
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{
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// Define functions
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Function f1(&torus_function);
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Function f2(&sphere_function<3>);
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Function_vector v;
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v.push_back(f1);
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v.push_back(f2);
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std::vector<std::string> vps;
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vps.push_back("+-");
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/// [Domain creation] (Warning: Sphere_3 constructor uses square radius !)
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namespace params = CGAL::parameters;
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Mesh_domain domain(Function_wrapper(v, vps),
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K::Sphere_3(CGAL::ORIGIN, CGAL::square(K::FT(5))),
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params::relative_error_bound(1e-6));
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/// [Domain creation]
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// Set mesh criteria
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Facet_criteria facet_criteria(30, 0.2, 0.02); // angle, size, approximation
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Cell_criteria cell_criteria(2., 0.4); // radius-edge ratio, size
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Mesh_criteria criteria(facet_criteria, cell_criteria);
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// Mesh generation
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C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria, params::no_exude().no_perturb());
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// Perturbation (maximum cpu time: 10s, targeted dihedral angle: default)
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CGAL::perturb_mesh_3(c3t3, domain, params::time_limit(10));
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// Exudation
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CGAL::exude_mesh_3(c3t3, params::time_limit(12));
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// Output
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std::ofstream medit_file("out.mesh");
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CGAL::IO::write_MEDIT(medit_file, c3t3);
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medit_file.close();
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return 0;
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}
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