hi all.
as I happily played along with POV I stumbled across the following problem,
where I seem to lack basic understanding of how things work, example given:

i want the brown thingies to cut holes into the grey block:
image: www.zensorama.de/rnd_cuts1.jpg

####################################################

camera{
    location <50,16,50>
    look_at <0,0,0>
    angle 40
  }


#declare S = seed(0);
#declare Index = 1;
#while(Index <= 300)
#declare graus = 1*rand(S);             // random farbe
#declare bocks = box {<1,1,1> .1
        pigment {rgb<1,0.7,0>}
        translate <10*rand(S),3,-0.0*rand(S)>
        scale <0.4*rand(S)-1,4*rand(S),0.4*rand(S)>
        rotate <0*rand(S), 90*rand(S)-45, 90*rand(S)>
        };
    object {bocks rotate <0,90,0> translate <0,5,0> }
#declare Index = Index + 1;
#end



box {<-10,-10,-10>,<10,12,10>
        pigment { rgb <0.8,0.8,0.8>}
        translate <0,0,0>
        rotate <0*rand(S), 0*rand(S), 0*rand(S)>
        }

####################################################

where and how would I place the CSG? I managed to intersect both objects
(although this probably gave me 300 big grey blocks first;), I managed to
subtract the block from the random boxes, but vice versa didn't work...

help appreciated

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