CGAL 4.14 - 2D Periodic Triangulations
Periodic_2_triangulation_2/p2t2_info_insert_with_transform_iterator_2.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Periodic_2_Delaunay_triangulation_2.h>
#include <CGAL/Periodic_2_Delaunay_triangulation_traits_2.h>
#include <CGAL/Periodic_2_triangulation_face_base_2.h>
#include <CGAL/Periodic_2_triangulation_vertex_base_2.h>
#include <CGAL/Triangulation_vertex_base_with_info_2.h>
#include <iostream>
#include <vector>
typedef Delaunay::Point Point;
//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, 0.0) );
points.push_back( Point(0.1, 0.0) );
points.push_back( Point(0.0, 0.1) );
points.push_back( Point(0.1, 0.4) );
points.push_back( Point(0.2, 0.2) );
points.push_back( Point(0.4, 0.0) );
Delaunay T;
T.insert( boost::make_transform_iterator(points.begin(), Auto_count()),
boost::make_transform_iterator(points.end(), Auto_count() ) );
CGAL_assertion( T.number_of_vertices() == 6 );
// check that the info was correctly set.
Delaunay::Finite_vertices_iterator vit;
for (vit = T.finite_vertices_begin(); vit != T.finite_vertices_end(); ++vit)
{
if( points[ vit->info() ] != vit->point() )
{
std::cerr << "Error different info" << std::endl;
exit(EXIT_FAILURE);
}
}
std::cout << "OK" << std::endl;
return 0;
}