    stop: { button: stopBtn, editor: new StopEditor(viewport, world) },
            crossing: { button: crossingBtn, editor: new CrossingEditor(viewport, world) },
            start: { button: startBtn, editor: new StartEditor(viewport, world) },
            parking: { button: parkingBtn, editor: new ParkingEditor(viewport, world) },
            light: { button: lightBtn, editor: new LightEditor(viewport, world) },
            target: { button: targetBtn, editor: new TargetEditor(viewport, world) },
 