/// <summary>
/// The square distance between the given point and the line, defined by this segment.
/// </summary>
/// <param name="p">The point.</param>
/// <returns>Returns the square distance between the given point and the line, defined by this segment.</returns>
public double LineDistanceSqr(Vector2d p)
{
var ap = p - a;
var dotprod = ab.Dot(ap);
var projLenSq = dotprod * dotprod / ab.SqrMagnitude();
return(ap.SqrMagnitude() - projLenSq);
}
public static double Angle(Vector2d from, Vector2d to)
{
return(Mathd.Acos(Mathd.Clamp(Vector2d.Dot(from.normalized, to.normalized), -1d, 1d)) * 57.29578d);
}