protected internal override xyz Cross(LineType ViewLine)
{
xyz Normal = ViewLine.Direction & ViewLine.P;
if (Normal.length() < 0.000001)
{
return(ViewLine.Value(ViewLine.P.length() - Radius));
}
Normal = (Normal & ViewLine.Direction).normalized();
double d = ViewLine.P * Normal;
if (System.Math.Abs(d) > Radius)
{
d = Radius;
}
return
(ViewLine.Value((-1) * (ViewLine.P * ViewLine.Direction) - System.Math.Sqrt(Radius * Radius - d * d)));
}
