mirror of https://github.com/CGAL/cgal
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
#define CGAL_MESH_2_OPTIMIZER_VERBOSE
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//#define CGAL_MESH_2_OPTIMIZERS_DEBUG
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//#define CGAL_MESH_2_SIZING_FIELD_USE_BARYCENTRIC_COORDINATES
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#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
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#include <CGAL/Constrained_Delaunay_triangulation_2.h>
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#include <CGAL/Delaunay_mesher_2.h>
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#include <CGAL/Delaunay_mesh_face_base_2.h>
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#include <CGAL/Delaunay_mesh_vertex_base_2.h>
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#include <CGAL/Delaunay_mesh_size_criteria_2.h>
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#include <CGAL/lloyd_optimize_mesh_2.h>
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#include <iostream>
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typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
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typedef CGAL::Delaunay_mesh_vertex_base_2<K> Vb;
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typedef CGAL::Delaunay_mesh_face_base_2<K> Fb;
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typedef CGAL::Triangulation_data_structure_2<Vb, Fb> Tds;
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typedef CGAL::Constrained_Delaunay_triangulation_2<K, Tds> CDT;
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typedef CGAL::Delaunay_mesh_size_criteria_2<CDT> Criteria;
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typedef CGAL::Delaunay_mesher_2<CDT, Criteria> Mesher;
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typedef CDT::Vertex_handle Vertex_handle;
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typedef CDT::Point Point;
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int main()
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{
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CDT cdt;
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Vertex_handle va = cdt.insert(Point(-2,0));
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Vertex_handle vb = cdt.insert(Point(0,-2));
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Vertex_handle vc = cdt.insert(Point(2,0));
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Vertex_handle vd = cdt.insert(Point(0,1));
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cdt.insert(Point(2, 0.6));
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cdt.insert_constraint(va, vb);
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cdt.insert_constraint(vb, vc);
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cdt.insert_constraint(vc, vd);
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cdt.insert_constraint(vd, va);
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std::cout << "Number of vertices: " << cdt.number_of_vertices() << std::endl;
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std::cout << "Meshing..." << std::endl;
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Mesher mesher(cdt);
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mesher.set_criteria(Criteria(0.125, 0.05));
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mesher.refine_mesh();
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std::cout << "Number of vertices: " << cdt.number_of_vertices() << std::endl;
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std::cout << "Run Lloyd optimization...";
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CGAL::lloyd_optimize_mesh_2(cdt,
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CGAL::parameters::max_iteration_number = 10);
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std::cout << " done." << std::endl;
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std::cout << "Number of vertices: " << cdt.number_of_vertices() << std::endl;
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}
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