Point get_endpoint_position(unsigned) const;
float get_endpoint_direction(unsigned) const;
bool snap_to(Track &, bool);
Point get_endpoint_position(unsigned) const;
float get_endpoint_direction(unsigned) const;
bool snap_to(Track &, bool);
const std::vector<Track *> &get_links() const { return links; }
Track *get_link(unsigned) const;
unsigned traverse(unsigned, unsigned) const;
const std::vector<Track *> &get_links() const { return links; }
Track *get_link(unsigned) const;
unsigned traverse(unsigned, unsigned) const;