Among other things, ABX wrote:

> While my version is not short enough to be a sig, I had fun making it as:
> 
> #macro S(I,G)#macro a(_ J E L B Y)_,y-J,z-E,L-x,B-y,Y#end,max(x-a(max(I.x
> ,G.x)max(I.y,G.y)max(I.z,G.z)min(I.x,G.x)min(I.y,G.y)min(I.z,G.z))-z)#end
> light_source{y 1}light_source{9+7*x 1}isosurface{function{min(max(y*5+z*4
> -x*4S(x-.1.1-z+1))S(-.1+t.1+x)S(z-y-.1.1+z)S(z-.1.1+t))}contained_by{box{
> -2 2}}pigment{rgb<.8.2>+z}}camera{orthographic location-z*4+9/4look_at(1-
> y)/4angle 30}

Woot! That's insane! :) Thanks it's a nice version.

-- 
light_source{9+9*x,1}camera{orthographic look_at(1-y)/4angle 30location
9/4-z*4}light_source{-9*z,1}union{box{.9-z.1+x clipped_by{plane{2+y-4*x
0}}}box{z-y-.1.1+z}box{-.1.1+x}box{.1z-.1}pigment{rgb<.8.2,1>}}//Jellby

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