mirror of https://github.com/CGAL/cgal
48 lines
1.7 KiB
C++
48 lines
1.7 KiB
C++
#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/Triangulation_hierarchy_2.h>
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#include <CGAL/Constrained_triangulation_plus_2.h>
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#include <cassert>
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#include <iostream>
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typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
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typedef CGAL::Triangulation_vertex_base_2<K> Vbb;
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typedef CGAL::Triangulation_hierarchy_vertex_base_2<Vbb> Vb;
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typedef CGAL::Constrained_triangulation_face_base_2<K> Fb;
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typedef CGAL::Triangulation_data_structure_2<Vb,Fb> TDS;
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typedef CGAL::Exact_predicates_tag Itag;
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typedef CGAL::Constrained_Delaunay_triangulation_2<K,TDS,Itag> CDT;
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typedef CGAL::Triangulation_hierarchy_2<CDT> CDTH;
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typedef CGAL::Constrained_triangulation_plus_2<CDTH> Triangulation;
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typedef Triangulation::Vertex_handle Vertex_handle;
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typedef Triangulation::Point Point;
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int
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main( )
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{
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Triangulation cdt;
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std::cout << "Inserting a grid 5 x 5 of 10 intersecting constraints " << std::endl;
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for (int i = 1; i < 6; ++i)
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cdt.insert_constraint( Point(0,i), Point(6,i));
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for (int j = 1; j < 6; ++j)
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cdt.insert_constraint( Point(j,0), Point(j,6));
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int count = 0;
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using Sc = Triangulation::Subconstraint;
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for (const Sc& sc : cdt.subconstraints()) {
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std::cout << sc.first->point() << " - " << sc.second->point() << std::endl;
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++count;
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}
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std::cout << "The number of resulting constrained edges is ";
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std::cout << count << std::endl;
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//verbose mode of is_valid ; shows the number of vertices at each level
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std::cout << "The number of vertices at successive levels" << std::endl;
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bool valid = cdt.is_valid(true);
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return valid ? 0 : 1;
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}
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