Er... no offence Red Eye but that remark betrays a really elementary lack of understanding about how my code works!
In fact, GuruYS has just basically asked the same question in the original thread. See the original thread (link above) for my explanation as to why changing the camera's viewing angle causes the code to fail.
If you want to be able to move the camera without playing merry harry with the viewing angle, see the attached code instead.
I think I'll cover all this in exhaustive detail in my forthcoming series for beginners on vector maths and DBPro's 3d vector maths commands.
Philip
What do you mean, bears aren't supposed to wear hats and a tie? P1.3ghz / 384 megs / GeForce MX 5200 128meg / WinXP home