Thanks, that's what I did. See p.b.i. "Accretion". The thin flaming ring is
the result so far. Could have been done with a disk 8-( My hope was to build
my other flames along turbulent toroidal magnetic lines... still in the
future somewhere.

Ben Birdsey <bbi### [at] unlgrad1unledu> wrote in message
news:37D34B2C.4FC3B474@unlgrad1.unl.edu...
> Why don't you try using a color map? Something like
>
>      density{
>        function{ ... }
>        color_map{
>          [0   rgb 0]
>          [0.5 rgb 0]
>          [1.0 rgb 1]
>        }
>      }
>
> This should clamp the values of density to 0 (i.e. transparent) unless
> function is > 0.5. Is that what you're going for?
>
> In Him,
> Ben

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