mirror of https://github.com/CGAL/cgal
60 lines
1.6 KiB
C++
60 lines
1.6 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/Labeled_mesh_domain_3.h>
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#include <CGAL/make_mesh_3.h>
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// Domain
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typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
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typedef K::FT FT;
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typedef K::Point_3 Point;
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typedef FT (Function)(const Point&);
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typedef CGAL::Labeled_mesh_domain_3<K> Mesh_domain;
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#ifdef CGAL_CONCURRENT_MESH_3
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typedef CGAL::Parallel_tag Concurrency_tag;
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#else
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typedef CGAL::Sequential_tag Concurrency_tag;
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#endif
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// Triangulation
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typedef CGAL::Mesh_triangulation_3<Mesh_domain,CGAL::Default,Concurrency_tag>::type Tr;
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typedef CGAL::Mesh_complex_3_in_triangulation_3<Tr> C3t3;
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// Criteria
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typedef CGAL::Mesh_criteria_3<Tr> Mesh_criteria;
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namespace params = CGAL::parameters;
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// Function
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FT sphere_function (const Point& p)
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{ return CGAL::squared_distance(p, Point(CGAL::ORIGIN))-1; }
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int main()
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{
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/// [Domain creation] (Warning: Sphere_3 constructor uses squared radius !)
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Mesh_domain domain =
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Mesh_domain::create_implicit_mesh_domain( sphere_function,
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K::Sphere_3(CGAL::ORIGIN, K::FT(2)));
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/// [Domain creation]
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// Mesh criteria
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Mesh_criteria criteria(params::facet_angle(30).facet_size(0.1).facet_distance(0.025).
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cell_radius_edge_ratio(2).cell_size(0.1));
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// Mesh generation
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C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria);
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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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