This is a macro I found somewhere on this:
#macro MakePlane(a,b,c)
  #local n=vnormalize(vcross((b)-(a),(c)-(a)));
  #local o=vdot((a),n);
  plane {n,o pigment { onion} }
#end

#declare a = <-1,1,0>;
#declare b = <1,0,-1>  ;
#declare c = <2,0,1>;
sphere { a 0.25 pigment { rgb <1,0,0> } }
sphere { b 0.25 pigment { rgb <0,1,0> } }
sphere { c 0.25 pigment { rgb <0,0,1> } }

MakePlane(a,b,c)

I know, too little, too late.

Josh

David Fontaine wrote:

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>  | \     |_                 <dav### [at] faricynet> <ICQ 55354965>
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--
Josh English
eng### [at] spiritonecom
"May your hopes, dreams, and plans not be destroyed by a few zeros."

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