"Mark Wagner" <mar### [at] gtenet> schrieb im Newsbeitrag
news:3ba0501b@news.povray.org...
>
> Jan Walzer wrote in message <3b9fc219@news.povray.org>...
> >no radiosity, no lights are used ... only isos and a skysphere ...
>
>
> Two copies of the isosurface, one scaled slightly larger than the other,
> with the outer one being mostly transparent, and a max_trace_level of 1.


The best guess so far ...

There are two ISOs ... one with threshold 0 and the other one with threshold
0.01 ...
the inner one is pigment 0 ambient 0 diffuse 0
the outer one has rgbt <0,0,0,1> and emitting media 1

because of the low threshold difference I had to change accuracy to 0.00001
and the formula has a maxgradient of 95 or so ... so it it very slow ...

I just realized, that instead of media I could have used fade_color 1,
couldn't I ???



--
Jan Walzer <jan### [at] lzernet>

Post a reply to this message

"Jan Walzer" <jan### [at] lzernet> wrote in message
news:3ba098c4$1@news.povray.org...
> "Mark Wagner" <mar### [at] gtenet> schrieb im Newsbeitrag
> news:3ba0501b@news.povray.org...
> >
> > Jan Walzer wrote in message <3b9fc219@news.povray.org>...
> > >no radiosity, no lights are used ... only isos and a skysphere ...
> >
> >
> > Two copies of the isosurface, one scaled slightly larger than the other,
> > with the outer one being mostly transparent, and a max_trace_level of 1.
>
>
> The best guess so far ...
>
> There are two ISOs ... one with threshold 0 and the other one with threshold
> 0.01 ...
> the inner one is pigment 0 ambient 0 diffuse 0
> the outer one has rgbt <0,0,0,1> and emitting media 1
>
> because of the low threshold difference I had to change accuracy to 0.00001
> and the formula has a maxgradient of 95 or so ... so it it very slow ...
>
> I just realized, that instead of media I could have used fade_color 1,
> couldn't I ???
>
>
>
> --
> Jan Walzer <jan### [at] lzernet>
>

Well there you go! Shows how much I know :)

Post a reply to this message

>
> I just realized, that instead of media I could have used fade_color 1,
> couldn't I ???
>
I think fade_color 1 gives no attenuation.

Post a reply to this message