// Original command by senocular.com, used with permission
// Modification by Aaron Beall for the Path panel

var f = new Object();
f.main = function(){
	var angle = prompt('Degrees of Rotation:', (fw.RotateSelectedPoints_previous||90));
	if (isNaN(angle) || angle==null) return false;
	fw.RotateSelectedPoints_previous = angle;
	angle *= Math.PI/180;
	var ca = Math.cos(angle);
	var sa = Math.sin(angle);
	var si, ci, ni;
	var sn, cn, nn;
	var n, _x, _y;
	var selNodes = new Array();
	sn = fw.selection.length;
	for (si=0; si<sn; si++){
		if (!fw.selection[si].contours) continue;
		cn = fw.selection[si].contours.length;
		for (ci=0; ci<cn; ci++){
			nn = fw.selection[si].contours[ci].nodes.length;
			for (ni=0; ni<nn; ni++){
				n = fw.selection[si].contours[ci].nodes[ni];
				if (n.isSelectedPoint || fw.activeTool!='Subselection') selNodes.push({r:n, si:si, ci:ci, ni:ni});
			}
		}
	}
	nn = selNodes.length;
	var avg = {x: 0, y: 0};
	for (var i=0; i<nn; i++){
		avg.x += selNodes[i].r.x;
		avg.y += selNodes[i].r.y;
	}
	avg.x /= nn;
	avg.y /= nn;
	for (var i=0; i<nn; i++){
		n = selNodes[i];
		_x = n.r.x - avg.x; _y = n.r.y - avg.y;
		fw.selection[n.si].contours[n.ci].nodes[n.ni].x = avg.x + _x*ca-_y*sa;
		fw.selection[n.si].contours[n.ci].nodes[n.ni].y = avg.y + _x*sa+_y*ca;
		_x = n.r.predX - avg.x; _y = n.r.predY - avg.y;
		fw.selection[n.si].contours[n.ci].nodes[n.ni].predX = avg.x + _x*ca-_y*sa;
		fw.selection[n.si].contours[n.ci].nodes[n.ni].predY = avg.y + _x*sa+_y*ca;
		_x = n.r.succX - avg.x; _y = n.r.succY - avg.y;
		fw.selection[n.si].contours[n.ci].nodes[n.ni].succX = avg.x + _x*ca-_y*sa;
		fw.selection[n.si].contours[n.ci].nodes[n.ni].succY = avg.y + _x*sa+_y*ca;
	}
	return true;
}
f.main();
f = undefined;
delete f;