public Segment(Point p1, Point p2)
{
P1 = p1;
P2 = p2;
Distance = MathHelper.Distance(p1, p2);
Angle = MathHelper.Angle(P1, P2);
var dx = p2.X - p1.X;
var dy = p2.Y - p1.Y;
Normal = new SVector();
}
public double Cross(SVector v)
{
return(X * v.Y - Y * v.X);
}
