CGAL 6.1 - 2D Triangulations

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Triangulation_2/voronoi.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Delaunay_triangulation_2.h>
#include <fstream>
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef CGAL::Delaunay_triangulation_2<K> Triangulation;
typedef Triangulation::Edge_iterator Edge_iterator;
typedef Triangulation::Point Point;
int main( )
{
std::ifstream in("data/voronoi.cin");
std::istream_iterator<Point> begin(in);
std::istream_iterator<Point> end;
Triangulation T;
T.insert(begin, end);
int ns = 0;
int nr = 0;
Edge_iterator eit =T.edges_begin();
for ( ; eit !=T.edges_end(); ++eit) {
CGAL::Object o = T.dual(eit);
if (CGAL::object_cast<K::Segment_2>(&o)) {++ns;}
else if (CGAL::object_cast<K::Ray_2>(&o)) {++nr;}
}
std::cout << "The Voronoi diagram has " << ns << " finite edges "
<< " and " << nr << " rays" << std::endl;
return 0;
}
CGAL::Delaunay_triangulation_2
The class Delaunay_triangulation_2 is designed to represent the Delaunay triangulation of a set of po...
Definition: Delaunay_triangulation_2.h:80
CGAL::Exact_predicates_inexact_constructions_kernel
CGAL::Object