"Craig Lindley" <cal### [at] gmailcom> wrote:
> Hello,
>
> I came across the attached image the other day that I thought was beautiful so I
> decided to look at raytracing again. I hadn't done any raytracing since about
> 1993 so the POVRAY program has changed quite a bit. I am using the 3.8 version
> of POVRAY and it is amazing. I retraced one of my old images that took 33 hours
> in the 1990's and today on my Mac it took about 10 minutes.
>
> Anyway. I would like to understand how this image was produced because I would
> like to do something like it for this years Christmas card.
>
> It seems to be made up of Fibonacci spirals but I am not sure. I looked at the
> POVRAY documentation for these types of spirals but I cannot seem to duplicate
> the image accurately. I would guess that each color is its own Fibonacci spiral
> but how they are positioned so they don't interfere with each other escapes me.
>
> Any help or suggestions would be appreciated. If anyone has access to the actual
> POV file for this image I would love to have it.
>
> Thanks in advance.

Hi Craig

Perhaps you can find some useful information by doing this search:
https://www.google.com/search?q=Doyle+spiral+circle&tbm=isch

In my opinion those Doyle spirals looks very similar to those in that image.

--
Tor Olav
http://subcube.com
https://github.com/t-o-k

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