Ken <tyl### [at] pacbellnet> wrote:
> You probably have a "plane" object in your scene

  A really VFAQ? :)

  One might think *why* does a plane need to be defined as solid (ie.
having an interior, which is actually half of the universe). One
naturally thinks a plane is just an infinitely thin sheet with no
volume.
  If one thinks this way, one forgets that planes are quite handy in
CSG (eg. for cutting parts of an object out) and would be quite useless
for this handy purpose if it was a non-solid object (like a bicubic
patch is).

-- 
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -

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