Hmmm, if I understood you well you have your lights put in CSG objects. If
you're using simple unions, there shouldn't be any problem. If you're using
differences too, which seems the case, then you may want to put your
light_source block outside the difference: i.e.: union { difference
{YOUR_DIFFERENCE} light_source {YOUR_LIGHT_SOURCE}}}. Anyway, if you wanted
to post some code it would be easier to find what is wrong.

--
Jonathan.

"Yadgar" <yad### [at] koh-e-qaisar-observatoryaf> ha scritto nel messaggio
news:3BD20773.5411C9A8@koh-e-qaisar-observatory.af...
> JRG schrieb:
>
> > Maybe your light source is coincident with a surface?
> >
> > --
> > Jonathan.
> >
> >
>
> Yes, in fact this was the case... the parlor's radius is 5 (centered at
x=0,
> z=0), the centers of the light cylinders are also placed at a
> distance of 5 from the parlor's center. But when I changed their location
from
> 5 to 4.99 (and as well the positions of the objects that go with them,
such as
> the decorative metallic belts, end caps and textureless "subtraction
boxes" to
> cut the cylinders in half), the whole scene turned significantly darker
and
> much grainier than before - but the strange striated wall structure
remains,
> see attached image!
>
> See you in Khyberspace -
http://www.geocities.com/electricafghan/index-e.html
> Afghanistan Chronicle: http://www.ndh.net/home/bleimann/
>
> Yadgar
>
> Now playing: Hello, Goodbye (The Beatles)
>
>
>


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