Inspired by 
  Subject: Image Creation Challange
  From: "James Taylor" <jim### [at] blueyondercouk>

Rules:
  5:00 time (I've made myself a mini C++ program as a stopper for this ;)
  camera{} and global_settings{} time NOT included in 5 min (free time)
  final-render time NOT included
  test-renders time IS included


And code :

global_settings { max_trace_level 100 adc_bailout 1/256 }
camera { 
  translate -z*5 rotate <0,30,-5> 
  aperture 0.07
  blur_samples 250
  focal_point <0,1,2>
  confidence 0.99    
  variance 1/250
}              


#local RND=seed(31414);

#macro FBox(W)
box {-1,+1
  finish { ambient .7 + .3*rand(RND) }
  pigment { 
    bozo scale .2 
    #local C=<rand(RND),rand(RND),rand(RND)>;
    #if (rand(RND)<.5) #local C=.7; #end
    color_map{[0 rgb .8*C][1 rgb 1*C]}    
  } 
  normal { bozo .6 }
  finish { reflection .3 }
  translate W
}
#end 
  
#local Rnd=seed(214);  
  
#local I=0; #while (I<5000)
  FBox(<rand(Rnd),rand(Rnd),rand(Rnd)>*100-50)
#local I=I+1; #end


-- 
#macro g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local l=mod(c,100
);g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end light_source{
y 2}sphere{z*20 9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

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"Rafal 'Raf256' Maj" <raf### [at] raf256com> wrote in 
news:Xns### [at] 204213191226

uuuups - the image

-- 
#macro g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local l=mod(c,100
);g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end light_source{
y 2}sphere{z*20 9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

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Attachments:
Download 'cubes_in_void.jpg' (15 KB)

Preview of image 'cubes_in_void.jpg'

Another 5 minute attempt. I think that with the 5 minute version you can 
actually get half a chance to make something identifiable (compared to the 
2 minute challenge where I could hardly manage to get my global_settings 
done in the time limit).

Here's the source:

global_settings{radiosity{count 120 error_bound 0.5 pretrace_start 0.08 
pretrace_end 0.02}photons{spacing 0.005}}
box{3*y-3,3*y+3 clipped_by{plane{y,5}}hollow on pigment{rgb 
1}finish{ambient 0}}
camera{location <2, 2, -2>look_at z-x+y}
light_source{<60, 300, -120>, rgb <1,.9,.7> fade_distance 350 fade_power 2}
sphere {0, 1000 pigment{rgb <0.3, 0.6, 1>}finish{ambient 1 diffuse 0}}
sphere{y, 1
pigment{rgb 1}finish{ambient 0 diffuse 0 reflection .99 specular 1 
roughness 0.001}
translate z-x photons{reflection on target}}
box{-1,1 pigment{rgb 1}finish{ambient 0} translate z-x}

-- 
light_source#macro G(E)sphere{z+E*y*5e-3.04rotate-z*E*6pigment{rgbt#end{
20*y-10#local n=162;1}#while(n)#local n=n-.3;G(n)x}}G(-n).7}}#end//GregE

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Attachments:
Download '5minutes.png' (39 KB)

Preview of image '5minutes.png'