question: public synchronized void trackHexImages ( IHex hex , MediaTracker tracker ) { Image base = hexToImageCache . get ( hex ) ; List < Image > superImgs = hexToImageListCache . get ( hex ) ; List < Image > orthoImgs = orthoListCache . get ( hex ) ; tracker . addImage ( base , 1 ) ; if ( superImgs != null ) { for ( Iterator < Image > i = superImgs . iterator ( ) ; i . hasNext ( ) ; ) { tracker . addImage ( i . next ( ) , 1 ) ; } } if ( orthoImgs != null ) { for ( Iterator < Image > i = orthoImgs . iterator ( ) ; i . hasNext ( ) ; ) { tracker . addImage ( i . next ( ) , 1 ) ; } } }
target:  Adds all images associated with the hex to the specified tracker