Distribute children on a path of a star

star

public static function star(items : Array, points : uint, innerRadius : Number = 50, outerRadius : Number = 100, align : String = null) : Distribute
{
	var path : Path = new Path();
	path.offset = DistributeAlign.getOffset(Math.max(innerRadius, outerRadius) * 2, Math.max(innerRadius, outerRadius) * 2, align);

	var step : Number,halfStep : Number, rot : Number, px : int, py : int, i : int;
	step = (Math.PI * 2) / points;
	halfStep = step / 2;
	rot = Math.PI / (points % 4 ? 2 : 4);
	px = Math.round(Math.cos(- rot) * outerRadius);
	py = Math.round(Math.sin(- rot) * outerRadius);
	path.add(new Point(px, py));
	for (i = 1; i <= points; i++)
	{
		px = Math.round(Math.cos((step * i) - halfStep - rot) * innerRadius);
		py = Math.round(Math.sin((step * i) - halfStep - rot) * innerRadius);
		path.add(new Point(px, py));
		px = Math.round(Math.cos((step * i) - rot) * outerRadius);
		py = Math.round(Math.sin((step * i) - rot) * outerRadius);
		path.add(new Point(px, py));
	}

	return new Distribute(items, path);
}