public Tile getAboveLeft ( ) { int y = tileY - 1 ; int x = tileX - 1 ; if ( y < 0 ) { y = getMaxTileNumber ( this . zoomLevel ) ; } if ( x < 0 ) { x = getMaxTileNumber ( this . zoomLevel ) ; } return new Tile ( x , y , this . zoomLevel , this . tileSize ) ; }
Returns the tile above left