koos <fra### [at] hotmailcom> wrote:
: I only don't get the reason why the seed declaration has to be placed
: outside the while-loop. 

  If you initialize the random number generator with the same value at
each loop, you'll get the same value from rand().
  A line like:

#declare S = seed(0);

means: "Make S a random number stream with the initial value 0". Successive
rand(S) calls will take values from that seed (and they are always the same
values).

-- 
#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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