LineRenderEvent lre = new LineRenderEvent( source );
LineRenderEvent lre = new LineRenderEvent( (StructureSource)source );
	public PrimitiveRenderEvent copy( )	{		LineRenderEvent lre = new LineRenderEvent( source );		if ( lia != null )		{			lre.setLineAttributes( LineAttributesImpl.copyInstance( lia ) );		}		if ( loStart != null )		{			lre.setStart( LocationImpl.copyInstance( loStart ) );		}		if ( loEnd != null )		{			lre.setEnd( LocationImpl.copyInstance( loEnd ) );		}		return lre;	}