[Fluxus] avoiding glitches and sphere normals

[gabor papp]

> walls get lit quite differently from the tower walls (which are 
> scaled cubes)...
> Any hints on how to deal with this sort of thing?
this is probably because non-uniform scaling affects normals. because 
the transformed normals might not be unit length, resulting
in undesirable lighting problems. (hint-normalize) makes
all normals unit length after they are transformed.

best,
gabor