Reactor wrote:

> I abandoned the blob pattern and function{ } based thunderhead approach for
> a slightly more cumbersome but faster rendering one.  I am not completely
> satisfied with it yet, but with a full scene and other clouds I think it
> would do pretty well.
>
Not bad IMO. 

BTW, I was doing some experiments with your posted media based clouds and 
found that very nice clouds can also be made with scattering only, i.e. 
without emission and absorption. Seems to me to be nearer to the "physical 
reality"...

I could post the reworked SDL code, if somebody is interested. 

Wolfgang

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