+ const Msp::GL::Object *get_body_object() const { return body_object; }
+ const Msp::GL::Object *get_axle_object(unsigned) const;
+ const Msp::GL::Object *get_bogie_object(unsigned) const;
+ const Msp::GL::Object *get_bogie_axle_object(unsigned, unsigned) const;
+private:
+ Msp::GL::Object *get_object(const std::string &);