[away3d] Cube calculate side is towards the camera?

[Mech7]

Is there a way to see what side is pointed near the camera? I can only
think of m very long if else statements to see what side it is
turning.. but it's pretty ugly..

I tried to fake it by just resetting the cube position, unfortunately
this causes about 1 frame clipping where the cube disappears.

switch (direction)
                        {
                                case 'left':

                                        this.cube.cubeMaterials.front = 
this.nextMaterial;
                                        this.cube.cubeMaterials.left = 
this.currentMaterial;
                                        this.camera.distance = 400;
                                        this.cube.rotationX = 90;
                                        this.cube.rotationZ = 90;
                                        this.cube.rotationY = 0;
                                        this.cube.depth = this.x...@cubewidth;
                                        this.cube.height = this.x...@cubeheight;
                                        this.cube.width = this.x...@cubewidth;

                                        Tweener.addTween(this.cube, { 
time:this.x...@animationspeed,
rotationZ:(this.cube.rotationZ + 90), transition:'easeOutCubic' } );

                                break;
                                case 'top':

                                        this.cube.cubeMaterials.front = 
this.nextMaterial;
                                        this.cube.cubeMaterials.top = 
this.currentMaterial;
                                        this.cube.cubeMaterials.left = null;

                                        this.camera.distance = 250;

                                        if (this.currentMaterial) {
                                                this.currentMaterial.rotation = 
90 * Math.PI / 180;
                                                this.currentMaterial.repeat = 
true;
                                        }

                                        this.cube.depth = this.x...@cubeheight;
                                        this.cube.width = this.x...@cubewidth;
                                        this.cube.rotationY = 180
                                        this.cube.rotationX = 180;
                                        this.cube.rotationZ = 0;


                                        Tweener.addTween(this.cube, { 
time:this.x...@animationspeed,
rotationX:(this.cube.rotationX + 90),
transition:'easeOutCubic' } );
                                break;
                        }