Hi
At this page:
https://www.jedsoft.org/fun/complex/gallery.html
 I found some images where the author had applied the same function iteratively
on the coordinates corresponding to each pixel. This sometimes creates fractal
like shapes.
I wanted to try to do the same with my library for complex functions. The
attached image is one of the results. I'm using a different coloring scheme
than the author so the colors are not the same.
Here are the functions used for this image:
j = sqrt(1), Z = re + im*j
G(Z) = (1 + j)*Sin(Z)
F(Z) = G^7(Z) = G(G(G(G(G(G(G(Z)))))))
re and im are the coordinates along the x and zaxis in the plane.
If anyone is interested in the source code, it can be found here:
https://github.com/tok/POVRaycomplexfunctions/blob/main/Examples/Iterated_Sine.pov

Tor Olav
http://subcube.com
https://github.com/tok
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