public double Dist(Pt p)
{
//distance from p to the edge
if (vect.Dot(p - p1) <= 0)
return p.Dist(p1); //from p to p1
if (vect.Dot(p - p2) >= 0)
return p.Dist(p2); //from p to p2
//distance to the line itself
return Math.Abs(-vect.Y * p.X + vect.X * p.Y + p1.X * p2.Y - p1.Y * p2.X) / norm;
}
public static double Dist(Pt v1, Pt v2)
{
return v1.Dist(v2);
}