public static Circle2 FitCircle(IList <Vector2> points)
{
var n = points.Count;
if (n == 3)
{
return(Circle2.FromThreePoints(points[0], points[1], points[2]));
}
else
{
return(FitCircle(points, p => p.X, p => p.Y, p => 1)); // equal weights
}
}