return ( (I3DRenderEvent) event ).getObject3D( );
try { return ( (I3DRenderEvent) event ).getObject3D( ); } catch ( ChartException ex ) { throw new RuntimeException( ex ); }
	protected Object3D getObjectFromEvent( Object event )	{		if ( event instanceof WrappedInstruction )		{			event = ( (WrappedInstruction) event ).getEvent( );		}		if ( event instanceof I3DRenderEvent )		{			return ( (I3DRenderEvent) event ).getObject3D( );		}		else		{			throw new IllegalArgumentException( );		}	}