On Wed, 07 Aug 2002 20:03:58 +0300, Peter Popov wrote:
> On Wed,  7 Aug 2002 10:55:38 EDT, "D. Stark"
><dir### [at] GODHOWIHATESPAMlemongeckoorg> wrote:
> 
>>I also intersected the height field with a cube to "fill-in"
>>the back side (now it's not hollow).
> 
> I think this shows your problems - height fields don't always work
> with CSG because they were never meant to. I had the exact same

That's not true.  You just have to understand the insideness rules.

-- 
plane{-z,-3normal{crackle scale.2#local a=5;#while(a)warp{repeat x flip x}rotate
z*60#local a=a-1;#end translate-9*x}pigment{rgb 1}}light_source{-9red 1rotate 60
*z}light_source{-9rgb y rotate-z*60}light_source{9-z*18rgb z}text{ttf"arial.ttf"
"RP".01,0translate-<.6,.4,.02>pigment{bozo}}light_source{-z*3rgb-.2}//Ron Parker

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