handleMultiplier = 0.2761425;
NPoint = function(node){
	return {x: node.x, y:node.y};
}
DistanceBetween = function(p1, p2){
	var dx = p2.x-p1.x, dy = p2.y-p1.y;
	return Math.sqrt(dx*dx+dy*dy);
}
AngleBetween = function(p1, p2){
	return Math.atan2(p2.y-p1.y, p2.x-p1.x);
}
PointFromVector = function(origin, angle, power){
	return {
		x: origin.x + Math.cos(angle)*power,
		y: origin.y + Math.sin(angle)*power
	}
}

function Smooth(){
	if (!fw.selection.length) return false;
	var s, c, n, ns, pp, sp, dist, ang, reach, predPt, succPt
	for (s=0; s<fw.selection.length; s++){
		if (fw.selection[s].__proto__ == Path.prototype){
			for (c=0; c<fw.selection[s].contours.length; c++){
				ns = fw.selection[s].contours[c].nodes;
				for (n=0; n<ns.length; n++){
					if (ns[n].isSelectedPoint || fw.activeTool!='Subselection'){
						pp = (n == 0)  ? ns[ns.length-1] : ns[n-1];
						sp = (n == ns.length-1)  ? ns[0] : ns[n+1];
						dist = DistanceBetween(sp, pp);
						ang = AngleBetween(sp, pp);
						reach = dist*handleMultiplier;
						predPt = PointFromVector(NPoint(ns[n]), ang, reach);
						succPt = PointFromVector(NPoint(ns[n]), ang+Math.PI, reach);
						ns[n].predX = predPt.x;
						ns[n].predY = predPt.y;
						ns[n].succX = succPt.x;
						ns[n].succY = succPt.y;
						ns[n].isCurvePoint = true;
					}
				}
			}
		}
	}
}

Smooth();