Kari Kivisalo <ray### [at] engineercom> wrote:
: The problem here is that the task is poorly specified.
: Nowhere in the rules page I see explicitly specified
: sun position. Nobody knows where it's supposed be so my
: guess is as good as anyone's.

  The images at
http://hdri.cgtechniques.com/~sibenik2/competition/rules.htm?board=sibenik&action=display&num=1007893821

show quite clearly that the light should be coming from a direction which is
-1 unit in the x-axis, 3 units in the y-axis and 5 units in the z-axis. Thus
the light should be located at <-1,3,5>*Distance.
  It does not specify the distance, but as it should be the Sun, a distance
large enough should be used. This is what I did (I used <-1000,3000,5000>).

-- 
#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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