const TrackType3D &Catalogue3D::get_track(const TrackType &tt) const
{
map<const TrackType *, TrackType3D *>::const_iterator i = tracks.find(&tt);
const TrackType3D &Catalogue3D::get_track(const TrackType &tt) const
{
map<const TrackType *, TrackType3D *>::const_iterator i = tracks.find(&tt);