public static Vector2 PointFromString(string s){
s = s.Trim ();
s = s.Substring (1, s.Length - 2);
string[] ss = s.Split(',');
if (ss.Length < 2) {
return new Vector2 ();
} else {
float x = float.Parse(ss[0]);
float y = float.Parse(ss[1]);
return new Vector2(x, y);
}
}