I've been using 3 layered image maps from 
http://www.lancs.ac.uk/postgrad/thomasc1/render/planets/earth.htm
with good results. 

sig.

"mr.art" wrote:
> 
> The real problem for me is to get the highlighting on the "water"
> areas only. Any ideas? The whole thing is an isosurface with a nice
> pigment map from NASA to overlay the shape. The isosurface is defined by
> a
> grayscale image from NASA.
> 
> Bob Hughes wrote:
> >
> > "mr.art" <mr.### [at] gcinet> wrote in message news:3894D38A.F6F3E4D4@gci.net...
> > | Actually, I had never seen the earth with highlights,
> >
> > It does of course.  Any elevation above ground from your standing height (or
> > lower?) to orbital height (and higher?) can show it.  Look into your own heads
> > shadow at noon and you'll likely see it's brighter immediately around the shadow
> > edges, from an airplane shows it very well, and there are numerous Earth photos
> > which show it too.  This particular image with the sunlight direction off-center
> > may be a different story though.  Anyway I've never seen that much before, it
> > implies a lot of roughness, or *small-scale angular faceting, on the surface.  I
> > want to try that type of highlighting myself now  :-)
> >
> > *blinn microfacets?
> >
> > Bob
> 
> --
> Mr. Art
> 
> "Often the appearance of reality is more important
> than the reality of the appearance."
> Bill DeWitt 2000

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