问如何旋转等轴测视图？

EN

const TILE_WIDTH:Number = 180;
const TILE_HEIGHT:Number = 90;

for( var i:Number = 0; i < 10; i++ ){
    for( var j:Number = 0; j < 10; j++ ){
        var tile:MovieClip = new TileMC(); // a movieclip in the library...
        //  with a different tile & label on each frame
        tile.x = ( TILE_WIDTH  / 2 ) * ( j - i );
        tile.y = ( TILE_HEIGHT / 2 ) * ( j + i );
        tile.gotoAndStop( mapTileLabelsAr[j][i] ); // a 2d array of strings
        addChild( tile );
     }
}