"Tor Olav Kristensen" <tor### [at] TOBEREMOVEDgmailcom> wrote:
> Yes, Bill - We've been here for a while now...

Yep - you for far longer than I.  ;)

> And you are right; I've been very busy the last years.
> Not much time to do POV-Ray work =(

That's life.  Work is work, and hobbies are hobbies.
We need clones. :D

> But you, IIRC, have always been - and still are - quite active in here.
> Very good!

Almost every day.  It keeps my mind active, and I just have all of the ideas
that I have to somehow meaningfully get out of my head.  That's why I appreciate
POV-Ray so much - it allows me to simultaneously document and create, and
explore things that a GUI modeler just can't do.

> - I couldn't resist exploring the "Droste Effect" in Escher's
> "Print Gallery" picture with POV-Ray. I've made some progress in
> achieving this in POV-Ray. I'll post some of my results here.

I've been meaning to explore it myself, since it touches on much of what I've
played with in terms of functions in the complex plane, geometric inversion,
procedural patterns, Doyle spirals, etc.


> "M.C. Escher: More Mathematics Than Meets the Eye" - By Sara Robinson
> https://im-possible.info/english/articles/escher_printgallery/index.html
>
> "A logarithmic image transformation" - by Jos Leys
> https://www.josleys.com/article_show.php?id=82
>
> As far as I can see, the page above has much the same contents as
> the document below. But Firefox and Edge do not try to render the
> jsMath formulas within it. The PDF file from the page below has the
> formulas rendered, but it's behind a pay wall.

Yes.  I found Jos' page as well, and the formulas wouldn't render for me either.
 I tried downloading jsMath and unzipping it (holy motherlode of files! :O ) but
I'm assuming I'm missing some key step in getting a browser to locate,
recognize, and use it.

I'd love to have some kind of math formula formatting suite of macros . . . cue
Project Number 4,597.

I have new internet arriving on Thursday, so I can continue with various
projects that are stalled due to connectivity.

Happy Easter - hope to "see" you again sometime soon.

- BE

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