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; }
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; }