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

namespace bg = boost::geometry;

typedef bg::model::point<double, 2, bg::cs::cartesian> point_t;
typedef bg::model::linestring<point_t> linestring_t;

int main()
{
    point_t p;
    bg::read_wkt("POINT(5000000 5000000)", p);

    linestring_t l1;
    bg::read_wkt("LINESTRING(5000000 4000000, 4000000 5000000)", l1);
    
    linestring_t l2;
    bg::read_wkt("LINESTRING(5000000 4000000, 4000000 5000000, 0 9000000)", l2);
    
    std::cout << bg::distance(p, l1) << std::endl;
    std::cout << bg::distance(p, l2) << std::endl;
}