AS3 3D cube (ported from as1 example)

[AS3.0]

I just finished porting this as1 example to as3, just put this script in the actions panel:

var box = {

points:     [
{ x: -1 , y: -1 , z: -1 },
{ x: -1 , y: -1 , z:  1 },
{ x:  1 , y: -1 , z:  1 },
{ x:  1 , y: -1 , z: -1 },

{ x: -1 , y:  1 , z: -1 },
{ x: -1 , y:  1 , z:  1 },
{ x:  1 , y:  1 , z:  1 },
{ x:  1 , y:  1 , z: -1 }

    ],

faces:    [
[ 0 , 3 , 2 , 1 ],
[ 4 , 5 , 6 , 7 ],
[ 1 , 5 , 4 , 0 ],
[ 7 , 6 , 2 , 3 ],
[ 0 , 4 , 7 , 3 ],
[ 6 , 5 , 1 , 2 ]

    ]

    }

var rad = Math.PI / 180;
var my_shape:Shape = new Shape();
var dim = 200;    // scale factor for unitlength obj vectors //
function World3d( obj ) {

this.obj = obj;

this.loc = scene;

rad = Math.PI / 180;

}
var pers;
function World3dRender( xa , ya ) {

    // calculate rotate matrix //

    var cya = Math.cos( ya * rad );

    var sya = Math.sin( ya * rad );

    var cxa = Math.cos( xa * rad );

    var sxa = Math.sin( xa * rad );

    for ( var e in box.points ) {

var p = box.points[e];

// rotate each point around axis //

var tempz = ( p.z * cya ) - ( p.x * sya );

var tmpx = ( p.z * sya ) + ( p.x * cya );

var tmpz = ( p.y * sxa ) + ( tempz * cxa );

var tmpy = ( p.y * cxa ) - ( tempz * sxa );

// projection to screen //

pers = 1 / ( 3 + tmpz );

p.sx = tmpx * pers * dim;

p.sy = tmpy * pers * dim;

    }

    // draw faces //

my_shape.graphics.clear();
my_shape = new Shape();
addChild(my_shape);
my_shape.x=200
my_shape.y=200
    for (e in box.faces ) {

var l = box.faces[e];

p = box.points;

var p0 = p[ l[0] ] , p1 = p[ l[1] ] , p2 = p[ l[2] ] , p3 = p[ l[3] ];

var z = (p1.sx - p0.sx) * (p2.sy - p0.sy) - (p1.sy - p0.sy) * (p2.sx - p0.sx);

if ( z < 0 ) { // backface culling //




my_shape.graphics.lineStyle(1, 0x27D3DC, 1);
        
my_shape.graphics.beginFill ( 0x444444 );
    
my_shape.graphics.moveTo ( p0.sx , p0.sy );
    
my_shape.graphics.lineTo ( p1.sx , p1.sy );
    
my_shape.graphics.lineTo ( p2.sx , p2.sy );
    
my_shape.graphics.lineTo ( p3.sx , p3.sy );
    
my_shape.graphics.lineTo ( p0.sx , p0.sy );

my_shape.graphics.endFill ();

}

    }

}

// create instance //

var a=0
var b=0
// render scene depending on mouse position //
addEventListener(Event.ENTER_FRAME,loop);
function loop(e:*){
World3dRender(stage.mouseY,stage.mouseX ) 
}