Control point snapping JSFL

var d=fl.getDocumentDOM();
var s=d.selection;

if(s) {
    snap(s);
} else {
    fl.trace("No document opened");
}

function snap(s) {

    if(s.length==0) {
        fl.trace("Nothing selected");
        return;
    }

    for(var i=0;i<s.length;i++){
        var e=s[i];
        //fl.trace(e);

        if(e.elementType=="shape") {
            snapShape(e);
        } else if(e.elementType=="instance") {
            snapInst(e);
        }
    }
}

function snapInst(inst) {
    inst.x=Math.round(inst.x);
    inst.y=Math.round(inst.y);
    inst.width=Math.round(inst.width);
    inst.height=Math.round(inst.height);
}

function snapShape(shape) {

    //fl.trace("drawing object: "+shape.isDrawingObject+" group: "+shape.isGroup+" oval: "+shape.isOvalObject+" rect: "+shape.isRectangleObject );

    if(shape.isDrawingObject) return;
    //if(shape.isGroup) snapGroup(shape);

    shape.beginEdit();
    var vs=shape.vertices;

    for(var i=0;i<vs.length;++i) {
        var v=vs[i];
        var newX=Math.round(v.x);
        var newY=Math.round(v.y);
        v.setLocation(newX,newY);
    }

    shape.endEdit();
}