Tor Olav Kristensen wrote:
> 
> [...]
> 
> You can write the above expression like this:
> 
> #declare fn_trans_avg = Vector_Function(fn_x, fn_y, fn_z)
> 
> (Just in case you didn't know.)

Just habit - there was a time during 3.5 pre-beta when you could not and
since i wrote most of the isocsg stuff then i got used to it...

> [...]
> 
> But this would lead to incorrect result in many
> cases. E.g. for rotations:
> 

Sure, but as i said if the rotation is small this can be reasonably
approximated with my method.  

Christoph

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