These are funky!  :)  I dig 'em.

But what I really want to know is how you did the [drill]?  I don't have much
time to play with Pov-ray these days, but I had recently been trying to make a
realistic wood screw, and couldn't figure out how to do the 'screw' part.

Thanks!
-Law

gemelli david wrote:

> OK, here it is...the new version of what became a P.D.U. (Polyvalent
> Deposit Unit...hum...just the first name I found)
> Thanks to the remarks, I made a few changes on the flying thingy and
> added some samples of what it can be used for...
> I'll try to improve everything and to find other things to use...after
> that, I'll need an environment to demonstrate some of  the P.D.U. abilities.
>
> comments/ideas
>
>    thanks.
>
>                  David.
>
>   ------------------------------------------------------------------------
>  [Image]

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here, the drill is:
// the values of the various radius may be wrong, it's a freestyle writing
difference {
 cylinder {<0.0, 0.0, 0.0>, <10.0, 0.0, 0.0>, 0.75}
 blob {
   threshold 0.6
 #local nbS = 500;  // nb of sphere for precision
 #local nbT = 10;  // nb of turns
 #local ii = 0;
 #while (ii < nbS)
   sphere{<0.0, 1.0, 0.0>, 0.4, 1.0 translate 10.0*(ii / nbS)*x rotate 
nbT*360.0*(ii / nbS)*x}
   #local ii = ii + 1;
 #end
 }
}

         David.

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