In article <39C600D1.36F21F0B@my-dejanews.com>, 
gre### [at] my-dejanewscom wrote:

> The irony, Chris, is that it fails where the normal calculation is a 
> no-brainer: you've got a straight edge there. 

A no-brainer for you, but the computer doesn't know it is a surface, it 
only knows about a point on a ray and differences in a density function.
If the normal is the main problem, tracing three rays could help 
calculate the correct normal. Of course, the normal calculation would be 
1/3rd as fast...

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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