"Alain" <ele### [at] netscapenet> wrote in message
news:425db5ab$1@news.povray.org...
> Lance Birch nous apporta ses lumieres en ce 2005-04-12 11:15:
> > I think the thing that's lacking from these Blue Marble attempts is that the
> > glass has no depth-based colour change.  Most coloured glass gets darker as
the
> > depth increases.  Finding a way to do that which still renders fast could be
> > tricky though... hmm.
> >
> > Lance.
> >
> >
> fade_color [some colour]
> fade_distance [some value]
> fade_power 1 //linear relation, real world value. Suqare (2) is for
light_source fading.

I don't think this would produce results close enough to the NASA example
though.  I'm thinking media might be a better choice in this instance, to give
it more of a "dense" look.

Lance.

thezone - thezone.firewave.com.au

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