CGAL 6.1.2 - 2D Triangulations

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Triangulation_2/info_insert_with_transform_iterator_2.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Delaunay_triangulation_2.h>
#include <CGAL/Triangulation_vertex_base_with_info_2.h>
#include <CGAL/boost/iterator/transform_iterator.hpp>
#include <vector>
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef CGAL::Triangulation_vertex_base_with_info_2<unsigned, K> Vb;
typedef CGAL::Triangulation_data_structure_2<Vb> Tds;
typedef CGAL::Delaunay_triangulation_2<K, Tds> Delaunay;
typedef Delaunay::Point Point;
typedef Delaunay::Vertex_handle Vertex_handle;
//a functor that returns a std::pair<Point,unsigned>.
//the unsigned integer is incremented at each call to
//operator()
struct Auto_count : public CGAL::cpp98::unary_function<const Point&,std::pair<Point,unsigned> >{
mutable unsigned i;
Auto_count() : i(0){}
std::pair<Point,unsigned> operator()(const Point& p) const {
return std::make_pair(p,i++);
}
};
int main()
{
std::vector<Point> points;
points.push_back(Point(0,0));
points.push_back(Point(1,0));
points.push_back(Point(0,1));
points.push_back(Point(4,10));
points.push_back(Point(2,2));
points.push_back(Point(-1,0));
Delaunay T;
T.insert( boost::make_transform_iterator(points.begin(),Auto_count()),
boost::make_transform_iterator(points.end(), Auto_count() ) );
// check that the info was correctly set.
Delaunay::Finite_vertices_iterator vit;
for (Vertex_handle v : T.finite_vertex_handles())
if( points[ v->info() ] != v->point() ){
std::cerr << "Error different info" << std::endl;
exit(EXIT_FAILURE);
}
std::cout << "OK" << 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::Triangulation_data_structure_2
CGAL::Triangulation_vertex_base_with_info_2
The class Triangulation_vertex_base_with_info_2 is designed to be used as a base vertex class of a tr...
Definition: Triangulation_vertex_base_with_info_2.h:38
CGAL::cpp98::unary_function