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# Untitled

a guest Jun 14th, 2018 49 Never
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1. #include <CGAL/Exact_predicates_exact_constructions_kernel.h>
2. #include <CGAL/Arr_segment_traits_2.h>
3. #include <CGAL/Arrangement_2.h>
4. #include <vector>
5.
6. typedef CGAL::Exact_predicates_exact_constructions_kernel Kernel;
7. typedef CGAL::Arr_segment_traits_2<Kernel>            Traits_2;
8. typedef Traits_2::Point_2                             Point_2;
9. typedef Traits_2::X_monotone_curve_2                  Segment_2;
10. typedef CGAL::Arrangement_2<Traits_2>                 Arrangement_2;
11. int main ()
12. {
13.   // Construct the arrangement of five intersecting segments.
14.   Arrangement_2 arr;
15.   std::vector<Segment_2> segments;
16.   segments.push_back(Segment_2(Point_2(1, 0), Point_2(2, 4)));
17.   segments.push_back(Segment_2(Point_2(5, 0), Point_2(5, 5)));
18.   segments.push_back(Segment_2(Point_2(1, 0), Point_2(5, 3)));
19.   segments.push_back(Segment_2(Point_2(0, 2), Point_2(6, 0)));
20.   segments.push_back(Segment_2(Point_2(3, 0), Point_2(5, 5)));
21.   insert(arr, segments.begin(), segments.end());
22.
23.   Arrangement_2::Face_handle fh = arr.unbounded_face();
24.   for(Arrangement_2::Hole_iterator hole_it = fh->holes_begin();
25.                                    hole_it != fh->holes_end();
26.                                    ++hole_it)
27.   {
28.     Arrangement_2::Halfedge_handle h = *hole_it, start=h;
29.     do{
30.         std::cout << h->target()->point();
31.       h=h->next();
32.     }while(start!=h);
33.   }
34.
35.   return 0;
36. }
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