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#include <CGAL/Combinatorial_map.h>
#include <iostream>
#include <cstdlib>
typedef CGAL::Combinatorial_map<4> CMap_4;
typedef CMap_4::Dart_descriptor Dart_descriptor;
Dart_descriptor make_triangle(CMap_4& amap)
{
Dart_descriptor d1 = amap.create_dart();
Dart_descriptor d2 = amap.create_dart();
Dart_descriptor d3 = amap.create_dart();
amap.link_beta<1>(d1,d2);
amap.link_beta<1>(d2,d3);
amap.link_beta<1>(d3,d1);
return d1;
}
Dart_descriptor make_tetrahedral(CMap_4& amap)
{
Dart_descriptor d1 = make_triangle(amap);
Dart_descriptor d2 = make_triangle(amap);
Dart_descriptor d3 = make_triangle(amap);
Dart_descriptor d4 = make_triangle(amap);
amap.link_beta<2>(d1, d2);
amap.link_beta<2>(d3, amap.beta(d2,0));
amap.link_beta<2>(amap.beta(d1,1), amap.beta(d3,0));
amap.link_beta<2>(d4, amap.beta(d2,1));
amap.link_beta<2>(amap.beta(d4,0), amap.beta(d3,1));
amap.link_beta<2>(amap.beta(d4,1), amap.beta(d1,0));
return d1;
}
int main()
{
CMap_4 cm;
Dart_descriptor d1 = make_tetrahedral(cm);
Dart_descriptor d2 = make_tetrahedral(cm);
cm.sew<4>(d1,d2);
cm.display_characteristics(std::cout);
std::cout<<", valid="<<cm.is_valid()<<std::endl;
return EXIT_SUCCESS;
}
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