I have an existing geometric structure, and i try to make it usable with boost geometry.  I read the documentation for a similar problem but i did not success http://www.boost.org/doc/libs/1_54_0/libs/geometry/doc/html/geometry/examples/example__adapting_a_legacy_geometry_object_model.html

My Ring structure is very simple :

typedef std::vector< Point > Points;

struct Ring

{

void f()

{

    boost::geometry::concept::check< Geom::Ring >();

}

show failure since apparently my range does not support a clear() method correctly.  

however i think i implemented correctly the range adaption

namespace boost/geometry/traints

template<> struct tag< Geom::Ring > { typedef ring_tag type; };

namespace Geom
inline Geom::Points::iterator
range_begin(Ring & ring) { return ring.points.begin(); }

inline Geom::Points::iterator
range_end(Ring & ring) { return ring.points.end(); }

inline Geom::Points::const_iterator
range_begin(const Ring & ring) { return ring.points.begin(); }

inline Geom::Points::const_iterator
range_end(const Ring & ring) { return ring.points.end(); }

and in namespace  boost
    template <>
    struct range_mutable_iterator< Geom::Ring >
    { typedef Geom::Points::iterator type; };

    template<>
    struct range_const_iterator< Geom::Ring >
    { typedef Geom::Points::const_iterator type; };

I am a bit lost. Did i missed something obvious ?

Thanks,

Renaud