public double GetDistanceTo(Point point)
{
if (A.Equals(B))
{
return(A.GetDistanceTo(point));
}
var a = A - point;
var b = B - point;
double aa, bb, cc;
Geom.GetABC(a, b, out aa, out bb, out cc);
if (Geom.Sign((a.Y + bb) * aa - (a.X + aa) * bb) * Geom.Sign((b.Y + bb) * aa - (b.X + aa) * bb) <= 0)
{
return(Math.Abs(cc / Math.Sqrt(aa * aa + bb * bb)));
}
return(Math.Min(a.Length, b.Length));
}