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#include<vector>
#include<boost/shared_ptr.hpp>
#include<CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include<CGAL/Polygon_2.h>
#include<CGAL/create_offset_polygons_2.h>
#include "print.h"
typedef CGAL::Exact_predicates_inexact_constructions_kernel K ;
typedef K::Point_2 Point ;
typedef CGAL::Polygon_2<K> Polygon ;
typedef CGAL::Straight_skeleton_2<K> Ss ;
typedef boost::shared_ptr<Polygon> PolygonPtr ;
typedef boost::shared_ptr<Ss> SsPtr ;
typedef std::vector<PolygonPtr> PolygonPtrVector ;
int main()
{
Polygon poly ;
poly.push_back( Point(-1,-1) ) ;
poly.push_back( Point(0,-12) ) ;
poly.push_back( Point(1,-1) ) ;
poly.push_back( Point(12,0) ) ;
poly.push_back( Point(1,1) ) ;
poly.push_back( Point(0,12) ) ;
poly.push_back( Point(-1,1) ) ;
poly.push_back( Point(-12,0) ) ;
SsPtr ss = CGAL::create_interior_straight_skeleton_2(poly);
double lOffset = 1 ;
PolygonPtrVector offset_polygons = CGAL::create_offset_polygons_2<Polygon>(lOffset,*ss);
print_polygons(offset_polygons);
return 0;
}
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