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Clifford Attractors

paulbourke.net

11–17 of 17 posts

Re: Clifford Attractors

#11
I loved Clifford pick over's books as a teenager. Implemented a lot of his ideas as graphics effects on a 486. They're still fresh.

Computers, Pattern, Chaos and Beauty in particular was good, and cover attractors quite a bit.

His website is a monster of 1990's kitsch - Over 50 books. http://www.pickover.com

Re: Clifford Attractors

#12

What determines alpha on those images? On any attractors really? You end up with an infinitely large set of points between say -1.5 and 2.0. How does that end up being graphed. Perhaps that is magic/beauty of it.

Could you elaborate or suggest any references? It sounds like you are saying something that appears chaotic forms some coherent beautiful image?

I know alpha refers to many things but one of those is the fine-structure constant. There's some remarkable beauty in it because it unites electromagnetism, relativity and quantum mechanics. And this is why many thought the reciprocal of alpha (137) would become as important as 0 and Pi.

I am assuming though none of that relates to fractals and that alpha in this context refers to the angles?

Re: Clifford Attractors

#13

What determines alpha on those images? On any attractors really? You end up with an infinitely large set of points between say -1.5 and 2.0. How does that end up being graphed. Perhaps that is magic/beauty of it.

Could you elaborate or suggest any references? It sounds like you are saying something that appears chaotic forms some coherent beautiful image? I know alpha refers to many things but one of those is the fine-structure constant. There's some remarkable beauty in it because it unites electromagnetism, relativity and quantum mechanics. And this is why many thought the reciprocal of alpha (137) would become as important…

"Alpha" in this context probably refers to opacity, the A in RGBA. GP is making a comment on the apparent translucency of the filaments that comprise the attractor.

Re: Clifford Attractors

#14
Wow, these bring back deep memories.

I was basically weaned on a slew of Clifford Pickover's books — first his Black Holes: A Traveller's Guide and later Mazes For The Mind, The Loom Of God, Keys To Infinity, Fractal Horizons and others.

I distinctly remember a vacation spent in Portugal... I can date it to summer 1996 because I remember the TV droning on about the campaign between Bill Clinton and Bon Dole (!) furiously typing in Pickover's BASIC code to QBASIC (or was it GWBASIC?) in DOS mode on my first laptop, a Cyrix 586 ACER thing made of cheap, slightly springy plastic. I was fascinated by those patterns. I remember how at first the code all seemed like incantations but how gradually I got a feel for what the various parts did, and the strange pride when I eventually located (and modified) the parts that actually represented the formula being iterated, which I then proceeded to modify, and I'd sit there staring at the slowly-emerging patterns.

I'd forgotten all that. Thanks for bringing it back.

Re: Clifford Attractors

#16

What determines alpha on those images? On any attractors really? You end up with an infinitely large set of points between say -1.5 and 2.0. How does that end up being graphed. Perhaps that is magic/beauty of it.

Could you elaborate or suggest any references? It sounds like you are saying something that appears chaotic forms some coherent beautiful image? I know alpha refers to many things but one of those is the fine-structure constant. There's some remarkable beauty in it because it unites electromagnetism, relativity and quantum mechanics. And this is why many thought the reciprocal of alpha (137) would become as important…

Yeah my question really is how do you color these things in the render.

I quickly wrote something that would output the numbers and mapped those to points on the screen. But it just ended up looking like that. Points on a screen.

The images on the site looked like they had alpha... or used a much better idea than mine of just using points on a plane.

Re: Clifford Attractors

#17
post #9

What determines alpha on those images? On any attractors really? You end up with an infinitely large set of points between say -1.5 and 2.0. How does that end up being graphed. Perhaps that is magic/beauty of it.

I think it's determined by resolution and number of iterations. I wrote a quick JS vesrion using the provided formulas: http://bl.ocks.org/gunn/87401cb547cc2ee5b5ec

Your code and mine look really similar. You did a lot more points than I did. I will try that out and see if makes mine less "pointy." ha
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