In article <3c8fdafd$1@news.povray.org>, "RAY" <PCH### [at] yahoocom> 
wrote:

> Great job, but shouldn't the clouds have thickness (I don't see any).

I do. They aren't towering stratocumolus, but they obviously have 
thickness. They have leading edges that are brightly lit, and darker 
bodies and edges away from the light. I've seen clouds like this many, 
many times, they are more common then the thunderhead type.


> This scene easily shows the problem of sky_sphere, as this sky is a sphere.

This isn't a sky_sphere. If the author used the technique I used in the 
POV 3.5 demo file, it tries to simulate the actual atmosphere, with 
shells of air and clouds centered far below the origin. It looks like he 
did a lot better at it then I did, though... ;-)


> POV's problem is that sky_sphere centers on the origin, but needs to center
> far below the camera.

The sky_sphere feature doesn't "center" anywhere. It is not an object, 
it is just a background feature. And it can't do effects like this, just 
pigments.

-- 
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/

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