+ void add_track(Track3D &);
+ void remove_track(Track3D &);
+ const TrackMap &get_tracks() const { return tracks; }
+ Track3D &get_track(Track &) const;
+
+ void add_vehicle(Vehicle3D &);
+ void remove_vehicle(Vehicle3D &);
+ Vehicle3D &get_vehicle(Vehicle &) const;
+
+ void add_signal(Signal3D &);
+ void remove_signal(Signal3D &);
+ Signal3D &get_signal(Signal &) const;
+
+ Msp::GL::Scene &get_scene() { return scene; }
+ Msp::GL::Scene &get_endpoint_scene() { return ep_scene; }
+ Msp::GL::Scene &get_path_scene() { return path_scene; }
+ const Msp::GL::Lighting &get_lighting() const { return lighting; }
+
+private:
+ void object_added(Object &);
+ void object_removed(Object &);