Chris huff wrote ...

>In article <39B0E94F.E3A85D6A@schunter.etc.tu-bs.de>,
>chr### [at] gmxde wrote:

>> But then the sky should not be totally black (at least some color near the
>> horizon if it's only a thin atmosphere).

>Not at night. :-)
>Or even at daytime, if the atmosphere is thin, sunlight is dim, and the
>planetoid is small. The atmospheric scattering may only be visible when
>looking nearly directly at the sun or other light source.

>And besides, maybe a spacecraft just landed and the dust is still
>settling, and that is what causes the halos.

        Dust, errr, um, yeah, that's it.  :-)
        Seriously, I'de intended an airless moon, but I hadn't
realized that the glow around the lights would be impossible
in a vacuum.  My mistake.

>Anyway, I would like to know how the glow effect was done...emitting
>media spheres? Or scattering media? Or has someone else added Marcos
>Fajardo's glowing light sources patch to a newer version of POV?

        I think too many people jump to the "it must be a patched
version of pov" conclusion when they look at a render.  I don't mess
around with unofficial unsupported nonstandard hacks of povray.  The
glow is just an emitting media on a clear (hollow) sphere, in
regular PovRay 3.1.


Pete

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