[Bf-committers] Normalise patch

[Nathan Vegdahl]

> With that change, instead of having to check if the
> result of the normalise is a null vector, we'd have to
> check beforehand to see if it's lower than a certain
> threshold (since the rest of the operations on that
> vector will be on a magic value, hence, wrong).

    Actually, it's still very quick and easy to check.  No before-hand 
annoyances or thresholds involved.  It's even *easier* than checking if 
the resulting vector is null, as you suggested.  In fact, the way you 
check it is *exactly* the same as you would have before my modification 
(or at least should have):
    The Normalise function returns a floating point number.  If it's 
zero, then the vector wasn't properly normalised.

    Simple, huh?

--Nathan "Cessen" Vegdahl