POV-Ray : Newsgroups : povray.advanced-users : Media and self-shadowing clouds Server Time
1 Nov 2024 17:18:47 EDT (-0400)
  Media and self-shadowing clouds (Message 1 to 3 of 3)  
From: Chris Becker
Subject: Media and self-shadowing clouds
Date: 21 Mar 2002 21:56:07
Message: <3c9a9d47$1@news.povray.org>
Alright, here's what I can do with stacked planes:

http://www.csh.rit.edu/~topher/cloud.jpg

Great, except that it's very slow, memory intensive and you can see the
lines.

I've tried my best with media but with no success. I can get a sphere with
some white foggy stuff in it, but it isn't selfshadowing like the above is.
Plus, I can't get just a single cloud like I did above.

The way I did the above was I used the object pigment modifier with a sphere
and then just added turbulence with a high lambda to make it billowy. Is it
possible to replicate that picture but using media? Example code would be
very helpful.

Thanks in advance!


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From: Lutz-Peter Hooge
Subject: Re: Media and self-shadowing clouds
Date: 22 Mar 2002 00:06:35
Message: <MPG.1704da28af661fc19896f2@news.povray.org>
In article <3c9a9d47$1@news.povray.org>, cmb### [at] ritedu says...

> The way I did the above was I used the object pigment modifier with a sphere
> and then just added turbulence with a high lambda to make it billowy. Is it
> possible to replicate that picture but using media? 

Should be possible.

http://mitglied.lycos.de/lpvader/pov2html/pov2html.php?sourcefile=http://
www.hoogi.de/lutz-peter/extern/mediacloud.pov

(picture: http://www.hoogi.de/lutz-peter/extern/mediacloud.jpg)

By adjusting the scaling and turbulence you should be able to give it the 
same shape as yours.

Lutz-Peter


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From: Chris Becker
Subject: Re: Media and self-shadowing clouds
Date: 22 Mar 2002 10:40:14
Message: <3c9b505e$1@news.povray.org>
That's exactly what I needed. Thank you so much!

"Lutz-Peter Hooge" <lpv### [at] gmxde> wrote in message
news:MPG.1704da28af661fc19896f2@news.povray.org...
> In article <3c9a9d47$1@news.povray.org>, cmb### [at] ritedu says...
>
> > The way I did the above was I used the object pigment modifier with a
sphere
> > and then just added turbulence with a high lambda to make it billowy. Is
it
> > possible to replicate that picture but using media?
>
> Should be possible.
>
> http://mitglied.lycos.de/lpvader/pov2html/pov2html.php?sourcefile=http://
> www.hoogi.de/lutz-peter/extern/mediacloud.pov
>
> (picture: http://www.hoogi.de/lutz-peter/extern/mediacloud.jpg)
>
> By adjusting the scaling and turbulence you should be able to give it the
> same shape as yours.
>
> Lutz-Peter


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