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//! \file examples/Arrangement_on_surface_2/batched_point_location.cpp
// Answering a batched point-location query.
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Arr_segment_traits_2.h>
#include <CGAL/Arrangement_2.h>
#include <CGAL/Arr_batched_point_location.h>
#include <list>
#include "point_location_utils.h"
typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;
typedef CGAL::Arr_segment_traits_2<Kernel> Traits;
typedef Traits::Point_2 Point;
typedef CGAL::Arrangement_2<Traits> Arrangement;
typedef CGAL::Arr_point_location_result<Arrangement> Point_location_result;
typedef std::pair<Point, Point_location_result::Type> Query_result;
typedef Arrangement::Vertex_const_handle Vertex_const_handle;
typedef Arrangement::Halfedge_const_handle Halfedge_const_handle;
typedef Arrangement::Face_const_handle Face_const_handle;
int main()
{
// Construct the arrangement.
Arrangement arr;
construct_segments_arr(arr);
// Perform a batched point-location query.
std::list<Point> points;
points.push_back(Point(1, 4));
points.push_back(Point(4, 3));
points.push_back(Point(6, 3));
points.push_back(Point(3, 2));
points.push_back(Point(5, 2));
points.push_back(Point(1, 0));
std::list<Query_result> results;
locate(arr, points.begin(), points.end(), std::back_inserter(results));
// Print the results.
std::list<Query_result>::const_iterator it;
for (it = results.begin(); it != results.end(); ++it) {
std::cout << "The point (" << it->first << ") is located ";
if (const Face_const_handle* f =
boost::get<Face_const_handle>(&(it->second))) // inside a face
std::cout << "inside "
<< (((*f)->is_unbounded()) ? "the unbounded" : "a bounded")
<< " face." << std::endl;
else if (const Halfedge_const_handle* e =
boost::get<Halfedge_const_handle>(&(it->second))) // on an edge
std::cout << "on an edge: " << (*e)->curve() << std::endl;
else if (const Vertex_const_handle* v =
boost::get<Vertex_const_handle>(&(it->second))) // on a vertex
std::cout << "on "
<< (((*v)->is_isolated()) ? "an isolated" : "a")
<< " vertex: " << (*v)->point() << std::endl;
}
return 0;
}
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