In article <38B569B4.C1695ADA@iname.com>, Jerome <ber### [at] inamecom> 
wrote:

> 	Try something like that:
> #declare Normal = function { pigment { granite } }
> #declare Depth = 1 ;
> isosurface {
>   function { (Normal-0.5)*Depth-x }
>   bounded_by { box { -<Depth, 1, 100>, <Depth, 10, 100> } }
> }

And note that in the most recent MegaPOV the "contained_by" keyword 
replaces the original function of "bounded_by", so "bounded_by" now 
should behave the same as in other objects. The "open" keyword is used 
to get the same effect as you get with "clipped_by".

-- 
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/

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