and
http://www.graphics.cornell.edu/~eric/

Kari Kivisalo wrote:
> 
> ryan constantine wrote:
> >
> > how to depict the sun and sky at various times of day.
> 
> I found this: A Practical Analytic Model for Daylight.
> The images look just great and I think this model could be merged
> into povray (source available). It doesn't model clouds yet but
> it's been researched I'm sure.
> 
> http://www.cs.utah.edu/vissim/papers/sunsky/
> 
> ______________________________________________________________________
> Kari Kivisalo                                  http://www.kivisalo.net

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