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Penners <pen### [at] hotmail com> wrote in message
news:web.3f202a007a7870359478e7c60@news.povray.org...
> Hi,
> Does anyone know how to achieve this "halo" effect of a star being seen
> behind a cloud and, I assume because of scattering, there is a bright ring
> around the star? I have made the cloud a media object with scattering,
but
> I can't seem to get a nice "halo" around the star/light source.
>
> Thanks for any suggestions.
>
I think you can do that using a hollow sphere filled with scattering media
using a spherical color map with the middle transparent so color only shows
around the outside.
This isn't the same thing;
http://www.irtc.org/ftp/pub/stills/2003-06-30/lites_rg.jpg,
but while I was experimenting with the media for it I got something like
what you want. The code is here;
http://www.irtc.org/ftp/pub/stills/2003-06-30/lites_rg.zip
Look at the color map I used and play with it. You can either put it around
the star, or between the star and the clouds. Play with the placement, but
I think it should work.
RG
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