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Juggling Lab GIF Server

jugglinglab.org

143 pointsSchiphol25 comments

Nice. It also generates stereograms so you can see what it'd look like in 3d[0]

[0] http://jugglinglab.org/anim?pattern=%3C3p|3p%3E;stereo=true

Bug! Depth of the balls doesn't change when they're thrown forward and across or back and across between the 2 jugglers.

I found an archive of another juggling animator by Paul Klimek, the first known discoverer of siteswap, who called it "quantum juggling": https://web.archive.org/web/20140105002226/https://quantumju...

(Works in Chrome but not firefox for me. I remember it working in firefox, but it's apparently succumbed to bit-rot or the internet archive wrapping.)

Siteswaps can be juggled with any number of hands, such as the 4 hands of two jugglers: https://passing.zone/4-handed-siteswap/

A really nice web-app for searching and animating passing siteswaps is: https://passist.org/

For example: https://passist.org/siteswap/9968926?jugglers=2

In case of confusion: the diagram with arrows is a "causal diagram", showing the throw that is forced by each throw. So linking arrows are not the same ball/club, and the arrows can go backwards in time(!).

passist.org will animate solo siteswaps: https://passist.org/siteswap/915?jugglers=1 -- but 915 is animated really high by default. Click on the animation, then the cog, then increase the juggling speed, rather than the animation speed, to bring the pattern down lower.

There's also an android app that does similar stuff: https://github.com/namlit/siteswap_generator

There is also this:

https://www.craig-wood.com/nick/animations/

If you are interested in more juggling animations.

I specifically enjoy this comment:

> When making the men juggling men etc animations I made a small mistake which made the smaller men juggle at twice the rate of the larger men. This halves the quality of the smaller men's animation, but I left it because I rather liked the smaller men juggling faster the smaller they got.

http://jugglinglab.org/anim?<any_valid_siteswap_pattern> will serve an animation of that [siteswap](https://en.wikipedia.org/wiki/Siteswap) pattern.

Some of the GIFs on that Wikipedia page appear to have been generated by this website.

"Source Self made using the software "Juggling lab" (released under GNU licence)"

on https://en.wikipedia.org/wiki/File:Classic_4beats_passing_2j...

That's cool, is it being generated in real time ? Could have just been statically loaded no?

I would definitely guess not, since 1) you would quickly end up with a combinatorial explosion and 2) they would have had to have been programmatically generated before being statically served, so why not do it dynamically?

It seems to be both. Dynamically generated only if the combination doesn't already exist. Image links are to static storage.

Would be fun to feed this into video-to-video stable diffusion to create (none stick figure) animated or photorealistic videos...

Oh man, this has the vibes of JIS - the Juggling Information Service. This is where I saw this kind of animation the first time l, I think. It was one of the first websites I visited regularly and it is still online.

http://juggling.org/

The JIS database of clubs was already out of date and not responding to update requests ~25 years ago. For an actively-maintained list of events and clubs there is: https://www.jugglingedge.com/ -- which is where most of the rec.juggling and IJDb community went when IJDb shut down. There are probably more active forums now, but it's still the cleanest and most comprehensive list of juggling clubs and events that I know of.

funny to see juggling GUFs on hacker news, and a reference to the IJDb.

I was the creator and maintainer of the IJDb for a great many years. It was sad to have to finally shut it down, but it had had its day :-(

Thanks so much for the IJDb Colin E!

You're welcome - it was a blast.

So, this is Juggling Lab GIF Server or this is Juggling Lab GIF Server?

Siteswap patters are fun to toy and fuzz http://jugglinglab.org/anim?pattern=%3C339P|333P%3E

https://jugglinglab.org/anim?2

The only one I can do

How does this work?

The pattern described in the initial link is "915". That means throwing a ball to the height of a 9 ball pattern (the height you would throw if juggling 9 balls normally), next ball to a 1 ball height (essentially handing it across), then the third throw is to a 5 ball pattern height.

Then you repeat -- starting with the other hand.

The three heights add up to 15, with 3 throws in the sequence, so this is a pattern to be juggled with 5 balls.

A three ball sequence would be written as "3". "333" would be the same thing as it is just a repetition of the same "3" sequence.

Even numbers are thrown to the same hand.

There are more advanced notations for throwing two at the same time, or for a pause, and I'm not sure what a "2" would represent (hold in same hand one beat maybe).

This is using something called Sitewap notation https://en.wikipedia.org/wiki/Siteswap Each throw is represented by a number. Roughly speaking, a number X in the pattern implies that the throw is the "normal" throw when juggling X balls. So a normal pattern for 5 balls is just "5". One necessary but insufficient property is that the numbers in the pattern have to average to the number of balls you're juggling.

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