"Nexus" <nomail@nomail> wrote in message 
news:web.43b6177e25bf7649bdc77bf40@news.povray.org...
> .. snip ..
> 1) There's black triangular shadowy bits on the height field that just 
> don't
> look right. How do I get rid of them?
> .. snip ..
> Nexus
>

Would I be correct in thinking you've got a normal pattern on the height 
field and ambient turned right down?
My first guess would be that, where the light hits a triangle at a very 
slight angle, the normal pattern adjusts and makes it look relatively 
bright.
A couple of degrees more on the next triangle means no light hits it at all 
and with no ambient it just turns black.
If I'm right, then the options are to
  o  tilt the asteroid more towards the light
  o  adjust the height field so that no triangles are in shadow
  o  add a little ambient to the height field object so that the effect 
isn't so obvious (e.g. finish {ambient 0.1})

Regards,
Chris B.

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