mirror of https://github.com/CGAL/cgal
67 lines
2.0 KiB
C++
67 lines
2.0 KiB
C++
//******************************************************************************
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// File Description :
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//
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//******************************************************************************
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#include <CGAL/AABB_intersections.h>
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#include <debug.h>
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#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/Mesh_3/polyhedral_to_labeled_function_wrapper.h>
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#include <CGAL/make_mesh_3.h>
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// IO
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#include <CGAL/IO/Polyhedron_iostream.h>
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#include <CGAL/IO/File_medit.h>
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// Domain
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struct K: public CGAL::Exact_predicates_inexact_constructions_kernel {};
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typedef CGAL::Polyhedron_3<K> Polyhedron;
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typedef CGAL::Mesh_3::Polyhedral_to_labeled_function_wrapper<Polyhedron, K> Polyhedral_wrapper;
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typedef CGAL::Labeled_mesh_domain_3<Polyhedral_wrapper, 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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// Create and fill polyhedron
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Polyhedron polyhedron;
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std::ifstream input("data/elephant.off");
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input >> polyhedron;
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input.close();
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// Implicit function built by AABB_tree projection queries
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Polyhedral_wrapper polyhedral_wrapper(polyhedron, 3, 0.01, -0.01);
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Mesh_domain domain(polyhedral_wrapper, polyhedral_wrapper.bounding_sphere(), 1e-4);
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// Set mesh criteria
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Facet_criteria facet_criteria(20, 5, 0.002); // angle, size, approximation
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Cell_criteria cell_criteria(4, 0.05); // 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);
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// Output
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std::ofstream medit_file("out.mesh");
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CGAL::output_to_medit(medit_file, c3t3);
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return 0;
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}
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