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/*! \file draw_polygon_set.cpp
* Drawing a polygon set.
*/
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Polygon_2.h>
#include <CGAL/Polygon_with_holes_2.h>
#include <CGAL/Polygon_set_2.h>
#include <CGAL/draw_polygon_set_2.h>
typedef CGAL::Exact_predicates_exact_constructions_kernel K;
typedef CGAL::Polygon_2<K> Polygon_2;
typedef CGAL::Polygon_with_holes_2<K> Polygon_with_holes_2;
typedef CGAL::Polygon_set_2<K> Polygon_set_2;
typedef CGAL::Point_2<K> Point_2;
Polygon_2 rectangle(int l)
{
// Create a rectangle with given side length.
Polygon_2 P;
P.push_back(Point_2(-l,-l));
P.push_back(Point_2(l,-l));
P.push_back(Point_2(l,l));
P.push_back(Point_2(-l,l));
return P;
}
int main()
{
// Create a large rectangle A, with a hole and a smaller rectangle
// B inside A's hole.
Polygon_with_holes_2 A(rectangle(3));
Polygon_2 H(rectangle(2));
H.reverse_orientation();
A.add_hole(H);
Polygon_2 B(rectangle(1));
// Add them to a polygon set and draw it.
Polygon_set_2 S;
S.insert(A);
S.insert(B);
CGAL::draw(S);
return 0;
}
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