#include <boost/geometry.hpp>
#include <boost/geometry/geometries/geometries.hpp>
#include <boost/geometry/multi/geometries/multi_point.hpp>

#define ADD(X,Y) append(my_multipoint,make<point_xy<float> >(X,Y))

int main()
{
	using boost::geometry::model::d2::point_xy;
	using boost::geometry::append;
	using boost::geometry::make;

	boost::geometry::model::multi_point<point_xy<float> > my_multipoint;

	ADD(0,53); 
	ADD(0,103);
	ADD(0,53); 

	boost::geometry::model::polygon<point_xy<float> > hull;
	boost::geometry::convex_hull(my_multipoint,hull);
	return 0;
}