In article <386c21e3@news.povray.org>, "Me  :)" 
<cra### [at] netactivecoza> wrote:

> Greetings pov'ers
> 
> I am at my wits end now....
> What I'm trying to get is fog with *visible* turbulence.
> Like when it starts raining on a hot day, and the steam rises off the 
> road,
> with cars driving by, you get this swirling 'turbulence' effect in the
> steam.
> I have messed around for hours with fog, and ground-fog, but I just can't
> seem to get the turbulence even to an extent where you can see it.
> So now I'm calling out to the masses for help.  :)
> Anybody with an idea or a piece of source that can do this, would really
> make my day.

Sorry, can't help much here, since I have never used fog. You might want 
to try media, it is more versatile and more realistic, although it is 
slower. The method 3 media in MegaPOV is an improvement over the 
standard POV, it might be worth checking out.


> And speaking of rain...  any ideas on how to create reasonably acceptable
> rain / snow / hail  without having to create millions of separate objects 
> ??

Kind of funny you should ask this, I have been experimenting with ways 
of doing rain lately.
Probably the best way would be an isosurface object with a noise3d() 
function. This would allow you to simulate millions of drops with just 
one object, and very little memory. Of course, this can't be done in 
standard POV, it requires MegaPOV again. Another advantage of MegaPOV is 
that it has motion blur, which could be very useful for the raindrops.
Oh, and this question would probably be better put in 
povray.advanced-users.

-- 
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/

Post a reply to this message