"ajtribick" <nomail@nomail> wrote in message 
news:web.48fb31f9ed540e8abc82ce420@news.povray.org...
> Test animation of a sunrise using media and radiosity. The atmosphere is 
> created
> using Rayleigh scattering media which has a density that falls off 
> exponentially
> with height. The test is only partially successful: it seems that the 
> media
> atmosphere is not giving any contribution to the radiosity lighting. Still 
> have
> to figure out if there's any way to increase the contribution of the 
> scattering
> media to the radiosity while still allowing the colour of the sky to 
> remain
> visible.

Just a thought... As you are having a problem getting the media to 
contribute to the radiosity of objects within the object containing the 
media, why not excavate a volume for the objects from that object as 
follows:

union
{
    difference
    {
        sphere{0, 100000}
        sphere{0, 1000}
        interior{media{...}}
    }
    union
    {
        //Other objects all within the inner sphere above
    }
}

Rarius

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