"Samuel Benge" <stb### [at] THIShotmailcom> schreef in bericht 
news:46cba80d@news.povray.org...
> Hi everyone,
>
> I discovered a way to accurately depict minerals with POV-Ray. I found a
> demo version of a program called KrystalShaper
> (http://www.jcrystal.com/products/krystalshaper/) which allows one to
> view various crystal morphologies for different minerals. The demo
> version does not allow you to save or export, but you can view the
> Miller indices (http://en.wikipedia.org/wiki/Miller_index) of a
> crystal's faces, and determine the angle between them.
>
> Using the angles acquired from the program, I made an intersection of
> planes to create the crystal. It would not be too difficult to randomize
> the result to make unique, natural-looking specimens.
>
> The render itself is nothing amazing, but the possibilities represented
> by it are exciting!
>
> Questions and comments, welcome as always!
>
> Sam
>

This render is really beautiful! I'll keep a copy in my private depository 
of 'Beautiful images'.

Miller indices, yes... it's coming slowly back now. I used to have a 
'Wulff's net' to analyse crystal shapes 
http://euromin.w3sites.net/Nouveau_site/histoire/dates/pic_hist/wulff11.htm
and we used the Miller indices to place the normals of the faces on this 3D 
projection...

Thomas

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