On 13 Feb 2002 16:56:50 -0500, Warp wrote:
> Ron Parker <ron### [at] povrayorg> wrote:
>: Because it can be rewritten in terms of more primitive operations.
> 
>   Who says 'intersection' is more primitive than 'difference'?-)

Apparently, whoever wrote the code for difference. :)

merge {object{A inverse} object{B} inverse} works nicely too.

-- 
#local R=<7084844682857967,0787982,826975826580>;#macro L(P)concat(#while(P)chr(
mod(P,100)),#local P=P/100;#end"")#end background{rgb 1}text{ttf L(R.x)L(R.y)0,0
translate<-.8,0,-1>}text{ttf L(R.x)L(R.z)0,0translate<-1.6,-.75,-1>}sphere{z/9e3
4/26/2001finish{reflection 1}}//ron.parker@povray.org My opinions, nobody else's

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