pbg.setControllerHub(hub);
pag.setControllerHub(hub);
ptg.setControllerHub(hub);
// connect mouse events from Panel to the Hub
this.mouseEventRelay = new SwingMouseEventRelay(this.hub);
this.addMouseListener(mouseEventRelay);
this.addMouseMotionListener(mouseEventRelay);
this.addMouseWheelListener(mouseEventRelay);
this.isNewChemModel = true;
}