CGAL 5.4.1 - 2D Arrangements
Arrangement_on_surface_2/overlay.cpp
// A simple overlay of two arrangements.
#include <CGAL/basic.h>
#include <CGAL/Arr_overlay_2.h>
#include "arr_exact_construction_segments.h"
#include "arr_print.h"
int main() {
// Construct the first arrangement, containing a square-shaped face.
Arrangement arr1;
insert_non_intersecting_curve(arr1, Segment(Point(2, 2), Point(6, 2)));
insert_non_intersecting_curve(arr1, Segment(Point(6, 2), Point(6, 6)));
insert_non_intersecting_curve(arr1, Segment(Point(6, 6), Point(2, 6)));
insert_non_intersecting_curve(arr1, Segment(Point(2, 6), Point(2, 2)));
// Construct the second arrangement, containing a rhombus-shaped face.
Arrangement arr2;
insert_non_intersecting_curve(arr2, Segment(Point(4, 1), Point(7, 4)));
insert_non_intersecting_curve(arr2, Segment(Point(7, 4), Point(4, 7)));
insert_non_intersecting_curve(arr2, Segment(Point(4, 7), Point(1, 4)));
insert_non_intersecting_curve(arr2, Segment(Point(1, 4), Point(4, 1)));
// Compute the overlay of the two arrangements.
Arrangement overlay_arr;
CGAL::overlay(arr1, arr2, overlay_arr);
print_arrangement_size(overlay_arr);
return 0;
}