Just going from K=K+0.01 changed to K=K+0.11 or 0.12 is a great increase in
render time.  I tried lowering the two transmit 1's to 0.9 and it sped up
also, just didn't look the same anymore.
I didn't render a good size either, but it looks like a candidate for a
comet nucleus made up of rounded chunks of opaque ice to me.
I'm a little surprised how slow this was, being just 100 spheres, all in the
intersecting parts I guess.  I checked out using a 'union' wrapped around
the while loop and it only seemed to help imperceptably (merge makes it all
but disappear).

Bob

"Paul Vanukoff" <van### [at] primenetcom> wrote in message
news:3868f487@news.povray.org...
>
> Needs a light_source or two, a camera, and a fast computer. I have not
> nearly enough patience to see the render through on my machine.
>
>
> // Source //
>
> global_settings { max_trace_level 100 }
>
> #include "colors.inc"
>
> #declare K=0;
> #while (K<1)
>
> sphere
> {
>     < 0, 0, 0> 2*K
>     pigment
>     {
>         bozo turbulence 1.5
>         color_map
>         {
>             [0.0 color White transmit 0]
>             [1-K color White transmit 0]
>             [1-K color White transmit 1]
>             [1.0 color White transmit 1]
>         }
>     }
> }
>
> #declare K=K+0.01;
> #end
>
> // End Source //
>
> --
> Paul Vanukoff
> van### [at] primenetcom
>
>
>
>

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