"jimmy" <nomail@nomail> wrote in message 
news:web.44f8bf5f823370943cba71480@news.povray.org...
> Hello all,
> I need you help with a scene of mine.
> Basically i'm trying to modell a "flared" disc of gaz...
>
> The disc is the surface inside a cylinder and between 2 paraboloids...
> I fill it with emitting media...
>
> i wanted to tell the code i want more emmiting media to the center of the
> disc...i did it with a cylindrical density pattern.
>
> my problem is that bright part of my media is not centered in the 
> disc...it
> seems that it has nothing to do with the cylindrical pattern...
> i spent many hours trying to understand what i did wrong...i figure it may
> be a silly error of mine, but it can also be something i simply did not
> understand so i'm requesting your help! :D
>
> i'm looking forward for your advices
> jimmy
>
>

Not sure what your problem is, but the density is working as should be 
expected.  Try looking from directly above or the side and it is centred 
fine.  I think what you see as off-centred is a result of the angle of view.

-tgq

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