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> I tried it. I'm not sure how high was my max_trace_level but space
> between single copies was very dark. Maybe problem was I used for them
> union and/or merge. I will try it and on Monday send to you result to
> compare with MegaPov's picture. Thank you very much
Here a small example (image below) :
#global_settings{max_trace_level 41}
background{rgb 1}
light_source {-z*10000 1 rotate x*25 rotate y*30}
#declare Propeller=sphere{0,0.5 translate y*0.5
texture{
pigment{
gradient y
poly_wave 0.5
color_map{
[0 rgbf <1,1,1,0.94>][0.95 rgbf <1,1,1,1>][1 rgbf <1,1,0.9,1>]
}
}
finish{ambient 0 diffuse 0}
}
scale <0.5,5,0.1>
rotate -y*15
}
#declare i=0;
#declare nc = 20; // number of copies
#declare maxr=30; // max angle of rotation
union{
#while (i<nc)
object{Propeller rotate z*maxr*((i/nc))}
object{Propeller rotate z*i*maxr/nc rotate z*120}
object{Propeller rotate z*i*maxr/nc rotate z*240}
#declare i=i+1;
#end
difference{
sphere{0,1}
plane{z,0 inverse}
texture{
pigment{spiral1 1 color_map{[0.3 rgb 1][0.3 rgb 0]} scale <1,1,0.8>}
finish{ambient 0 diffuse 1}
}
scale <0.8,0.8,1.5>
translate z*0.3
}
rotate y*45
translate z*10
}
G.
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Preview of image 'propeller.jpg'
![propeller.jpg](/povray.binaries.images/attachment/%3C3be30258%241%40news.povray.org%3E/propeller.jpg?preview=1)
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![](/i/fill.gif) |