"Tim Nikias" <tim### [at] gmxde> wrote in message
news:3d573c07@news.povray.org...
> ...
> To answer all probable questions:
> The clouds are made with scattering media, as is the sun and
> some highlighting on the foreground heightfield,
> and an outer rim on the iglu for a crude subsurface scattering.

Oh, your clouds are so nice! Never seen better ones in CG (but many that
equal these).

> The iglu is pure CSG, the heightfields were modelled using
> pigment-patterns and the image-function.

I think the shadows casted by the height field on itself show the "low"
resolution of it. This probably is the case in the lower left corner. Good
looking otherwise.

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