If  I was you, I would work on a good bozo map with turbulence for the
clouds, then make one of the value change from whatever to bluewish / white
randomly, for wuick period of time.

"Chris Huff" <chr### [at] maccom> wrote in message
news:chr### [at] povrayorg...
> In article <3b1b5d2d$1@news.povray.org>, "jansb000" <jan### [at] wxsnl>
> wrote:
>
> > I would like to add some realistic clouds and ... thunder. Any ideas how
> > this can be done? The thunder does not have te be visible directly. Just
the
> > illumination on the clouds.
>
> I assume you mean lightning...just put a bright light source in the
> clouds when you want a flash of lightning (assuming you are using media
> clouds). A one-frame flash might be enough, or you may want groups of
> flashes over a period of time, which would be a bit more involved but
> not difficult.
>
> --
> Christopher James Huff - chr### [at] maccom,
http://homepage.mac.com/chrishuff/
> TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
>
> <><

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