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From: Volney <volney@invalid.invalid>
Newsgroups: sci.math
Subject: Re: Rotation Bifurcation...
Date: Sat, 30 Mar 2024 12:18:01 -0400
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On 3/29/2024 8:24 PM, Chris M. Thomasson wrote:
> A strange bifurcation algorithm from an older iterated function system 
> of mine:
> 
> https://youtu.be/XKhS_nklCkE
> 
> My pseudo code is in the description:
> 
> ______________
> // px_mutation interpolates from -4...4 across each frame; 1440 here.
> 
> render frames:
> _________
> // angle interpolates from 0...pi2 across iterations
> // px = py = 0
> 
> // Iteration:
> px = sin(angle * px_mutation);
> py = cos(angle * py);
> ______________
> 
> Anybody should be able to reproduce it on their end. Right?
> 
> It's all 2d, but has a 3d vibe! Nice.
> 
> Any thoughts?

It looks like a fractal version of an optical illusion of whether a 
cylinder (with the fractal on it) is rotating in one direction or the other.