public static double DistancePointLine3D(clsPoint3d p1, clsLine3d l1)
{
//Distance between 3D point and truncated 3D line
clsPoint3d p3d = new clsPoint3d();
double l = 0;
p3d = ProjectPoint(p1, l1);
l = l1.Lambda(p3d);
if (l < 0)
{
return(p1.Dist(l1.P1));
}
if (l > 1)
{
return(p1.Dist(l1.P2));
}
return(p1.Dist(p3d));
}
