CGAL 5.2.2 - 2D Arrangements
Arrangement_on_surface_2/point_location_example.cpp
// Answering point-location queries.
#include <CGAL/Simple_cartesian.h>
#include <CGAL/Arr_segment_traits_2.h>
#include <CGAL/Arrangement_2.h>
#include <CGAL/Arr_naive_point_location.h>
#include <CGAL/Arr_landmarks_point_location.h>
#include "point_location_utils.h"
typedef int Number_type;
typedef Traits_2::Point_2 Point_2;
typedef CGAL::Arrangement_2<Traits_2> Arrangement_2;
int main ()
{
// Construct the arrangement.
Arrangement_2 arr;
Naive_pl naive_pl(arr);
construct_segments_arr(arr);
// Perform some point-location queries using the naive strategy.
point_location_query (naive_pl, Point_2(1, 4)); // q1
point_location_query (naive_pl, Point_2(4, 3)); // q2
point_location_query (naive_pl, Point_2(6, 3)); // q3
// Attach the landmarks object to the arrangement and perform queries.
Landmarks_pl landmarks_pl;
landmarks_pl.attach(arr);
point_location_query (landmarks_pl, Point_2(3, 2)); // q4
point_location_query (landmarks_pl, Point_2(5, 2)); // q5
point_location_query (landmarks_pl, Point_2(1, 0)); // q6
return 0;
}