ingo <ing### [at] tagpovrayorg> wrote:
> in news:web.5c503bec8da54bb25536cfec0@news.povray.org And wrote:
>
> > I have to develop some method to generate the cloud shape (using
> > tolerance, pattern, etc) to output df3 files.
> >
>
> Hope this helps, I'm not good at clouds but it gives an idea
>
> ingo
>
> [code]

Searching through old newsgroup threads, I came upon something interesting re:
df3 files...

http://203.29.75.35/povray.general/thread/%3C40bfe2bc@news.povray.org%3E/?ttop=266599&toff=1850


........which includes a post from Christoph Hormann in 2004. Apparently, there
was an unofficial patched version of POV-Ray (3.5xx) that could create df3 files
*directly* from a pigment or pattern. He referenced this patch, from 2002...

https://staff.aist.go.jp/r-suzuki/e/povray/iso/df_body.htm

I guess this never made it into an official release. It would certainly save
time and coding effort (also, no pattern-to-.tga image slices to deal with in
order to 'build' a df3, AFAIU.)

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