PS I just wrote the code while composing my post. So it is yet untested.

Am Do., 20. Aug. 2020 um 11:15 Uhr schrieb Marc Nieper-Wißkirchen
<xxxxxx@nieper-wisskirchen.de>:
>
> Am Do., 20. Aug. 2020 um 10:55 Uhr schrieb Arvydas Silanskas
> <xxxxxx@gmail.com>:
> >
> > >  I can write the implementation for the final version.
> > Let me know if you want to implement it (otherwise I'll do it by adapting the  make-random-complex-generator implementation you've sent previously)
>
> You can use this, of course. (One note: In that implementation, I
> forgot to add the origin Z. So "(+ z (make-polar r phi))" instead of
> "(make-polar r phi)".
>
> With John's generalization to sectors, the start and end angle will,
> of course, replace the fixed bounds 0.0 and fl-2pi in the generator
> for phi.
>
> Marc