Reactor wrote:

> I have been experimenting with media-based clouds using pigment functions.
> After lots of playing, I think I've finally begin to understand the balance
> between emitting, absorption, and scattering medias.  I've also found that
> method 3 with 1 interval and a decent amount of samples seems to work the
> best (in terms of speed/quality).
> 
> Images number 1 and 3 were the slowest, about (estimated) 17h and 24h on a
> P4 2.66GHz machine running at 60% duty cycle.
> Image 2 is much faster, about 4 hours on a P4 3.0 @ 3.5 running 100% duty
> cycle
> Originals were 800 x 600, except for 3 which was 1024x768
> 
> Still working on making thunderheads, I think I've found a way using the
> cylindrical pattern and a few transforms...
> 
> 
>                         Reactor
> 

WOW! Those look amazing! I especially love the visible light shining 
through the coulds in the third picture.

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