Object3D.jsx

function Object3D(polylist){
    this.polys = polylist;
    this.polycount = this.polys.length;
}
Object3D.prototype.applyTransform = function(m3){
    app.scriptPreferences.enableRedraw = false;
    for(var i = 0; i < this.polycount; i++){
        var poly = this.polys[i];
        poly.applyTransform(m3);
        poly.draw();
    }
    this.polys.sort(function(poly1, poly2){
            var center1 = poly1.minZ();
            var center2 = poly2.minZ();
            if(center1 > center2){
                return -1
             }
            if(center2 > center1){
                return 1;
             }
         return 0;
    });
    for(var i = 0; i < this.polycount; i++){
        var poly = this.polys[i];
        poly.shape.bringToFront();
    }
    for(var i = 0; i < this.polycount; i++){
        var poly = this.polys[i];
        poly.line && poly.line.bringToFront();
    }

    app.scriptPreferences.enableRedraw = true;
}

Object3D.prototype.getCenter = function(){
        var total = 0;
        var x = 0;
        var y = 0;
        var z = 0;
        for(var i = 0; i < this.polycount; i++){
            var poly = this.polys[i];
            var center = poly.getCenter();
            x += center.x;
            y += center.y;
            z += center.z;
            total ++;
        }
        return new Vector3D(x/total, y/total, z/total);
    
    
}