CGAL 4.7 - 2D Triangulation: Triangulation_2/copy_triangulation_2.cpp

\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)

CGAL 4.7 - 2D Triangulation

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Triangulation_2/copy_triangulation_2.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <CGAL/Delaunay_triangulation_2.h>
#include <CGAL/point_generators_2.h>
typedef CGAL::Exact_predicates_inexact_constructions_kernel EPIC;
typedef CGAL::Exact_predicates_exact_constructions_kernel EPEC;
typedef CGAL::Delaunay_triangulation_2< EPIC > DT2_epic;
typedef CGAL::Delaunay_triangulation_2< EPEC > DT2_epec;
typedef CGAL::Cartesian_converter<
CGAL::Exact_predicates_inexact_constructions_kernel,
CGAL::Exact_predicates_exact_constructions_kernel > Converter;
typedef CGAL::Creator_uniform_2<double,EPIC::Point_2> Creator;
struct Convert_vertex{
mutable bool first_vertex;
Convert_vertex():first_vertex(true) {}
DT2_epec::Vertex operator()(const DT2_epic::Vertex&) const { return DT2_epec::Vertex(); }
void operator()(const DT2_epic::Vertex& src,DT2_epec::Vertex& tgt) const
{
if (!first_vertex)
tgt.point() = Converter()( src.point() );
else
first_vertex=false;
}
};
struct Convert_face{
DT2_epec::Face operator()(const DT2_epic::Face&) const { return DT2_epec::Face(); }
void operator()(const DT2_epic::Face&,DT2_epec::Face&) const {}
};
int main()
{
std::vector< EPIC::Point_2> points;
CGAL::Random_points_in_disc_2<EPIC::Point_2,Creator> g(1.0);
CGAL::cpp11::copy_n( g, 600, std::back_inserter(points) );
DT2_epic dt2_epic;
dt2_epic.insert(points.begin(), points.end());
DT2_epec dt2_epec;
dt2_epec.set_infinite_vertex(
dt2_epec.tds().copy_tds( dt2_epic.tds(),dt2_epic.infinite_vertex(), Convert_vertex(), Convert_face() ) );
CGAL_assertion( dt2_epec.is_valid() );
}