"kurtz_le_pirate" <kur### [at] yahoofr> wrote in 
news:4214b6e9$1@news.povray.org: 

> 

> news:42149dcf@news.povray.org... 
>> Axel R DuVirage <axe### [at] hotmailcom> wrote: 
>> > any ideas how to create a neon sign using maybe a hollow cylinder 
>> > filled with emitting merdia.  the problem is how do you "bend" the 
>> > tube (cylinder) without resorting to complicated mathematical
>> > functions...i know i'm lazy. 
>>
>>   Sounds exactly what sphere sweeps are for... :) 
> 
>     yes, spheres sweeps or (depends final forms) parts of torus... 
> 

I'm kind of new to this, but I think you'd also be able to use e.g. 
cylinder-sphere-cylinder if you were doing simple 90-degree bends by 
doing a merge/union CSG, if I remember correctly.

Just my two cents.

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