I highly recommend watching the relevant section of that video (4:38 to 8:59) and then implementing it yourself in whatever system you know that can draw lines and circles (I did it in Godot; it took only a few minutes to learn enough Godot to start on the algorithm).

It's absolutely mind-blowing that so little code can produce such a beautiful result. It's also fun to play with the parameters and see how they affect how the cloth feels.

mclau153

29 days ago

would you share your godot code to github?

jeffreygoesto

29 days ago

1 reply

For me, "Large Steps in Cloth Simulation" [0] made implicit methods accessible... Seminal paper.

[0] https://dl.acm.org/doi/10.1145/280814.280821

chombier

29 days ago

[delayed]

clbrmbr

29 days ago

2 replies

The tearing was unexpectedly disturbing!

Suggestion: use an accelerometer data on mobile and use that to directly replace gravity. I expect to be able to tip the phone to drape the cloth, and shake the phone to get waves of motion.

Hobadee

29 days ago

3 replies

This.

I can tear real cloth if I try, but I need to try. A flick of the finger has never once in my life torn cloth.

fainpul

29 days ago

Literally unplayable

brookst

29 days ago

It feels a bit like shooting at cloth.

afandian

29 days ago

Clear you must bite your nails!

eddieroger

29 days ago

I think the little tears were fine, but my expectation of the weight of the cloth wasn't so much that it would start to rip on its own after a certain point. It felt more like a wet dough at a certain point than cloth.

LyalinDotCom

29 days ago

2 replies

I was curious and was able to build something very similar quickly using Gemini 3 via Google AI Studio. Never would have imagined a few years ago how easy some of this has become to prototype.

cyber_kinetist

29 days ago

1 reply

There's a lot of simple cloth sim examples on the internet, so I see why LLMs can code these kinds of demos easily.

LyalinDotCom

29 days ago

yeah makes sense. Im sitting here evolving my little prototype its too much fun.

jcims

29 days ago

The 'Build' feature in AI studio has been pretty incredible for a few use cases I've thrown at it.

hoppersoft

29 days ago

1 reply

I spent entirely too much time finding out exactly how much "cloth" could be supported by two "strings."

zenoprax

29 days ago

I'm going to assume it is "more than you think; not as much as you'd like" because I don't have the time to burn this morning to replicate your research.

RankingMember

29 days ago

Pretty cool! I kept trying to cut the piece I had just cut again by doing a "Zorro"-style motion, but no such luck.

samcheng

29 days ago

This is great! The only part that broke the immersion (for me) was that the cloth bits fell at a constant rate - I'd expect them to accelerate due to gravity, and maybe flutter as they fell.

Nice art!

xnx

28 days ago

Thought this was going to be a repost of https://oimo.io/works/cloth/, which is also excellent.

raylad

29 days ago

Feels more like a spiderweb simulation. The fibers are sticky and stretchy.

mrkramer

29 days ago

Reminds me of Fruit Ninja but this one is Cloth Ninja.

sliken

28 days ago

Nice first approximation. The cloth has no momentum, a piece of cloth that clearly would swing down, past vertical, and then swing up just damps down and stops at vertical.

Also the falling pieces don't accelerate downward, which looks unnatural

jakemanger

29 days ago

That's super cool (and FAST -> hard to do from my personal attempts).

But, please, give us some nitty gritty of how you made it

taeric

29 days ago

First, kudos on this. Really cool to play with.

Reminds me of a great video not long ago that went over the main ideas behind weaving and knitting. Feels like you almost certainly have to take some of those ideas in mind when doing a simulation like this. Would be curious to read a breakdown of how this was made and how it incorporates the concepts that go into different fabric.

robertheadley

29 days ago

I wonder how far away we are from realtime Marvelous designer in games.

jan_Sate

29 days ago

Looks like that I can cut it without right click by swiping fast enough.

eternityforest

27 days ago

I wonder if cloth simulation could be integrated as a CAD primitive that somehow outputs reasonable BRep geometry?

Could you take an AI 3D scan of someone's face, virtually lay a heavy cloth over it, then add whatever you wanted to make a mask?

Could you make the deformed cloth surface into one side of a cube, where the other side was flat for easily working with it, and use that to make custom pseudo-vacumformed cases for things?

Or just stack up boxes and simple shapes, and use the cloth simulation to build organic looking industrial design within a more traditional CAD workflow?

OptionOfT

29 days ago

I remember the first time playing Splinter Cell.

Walking back and forth through a curtain to see how it wraps around the body. So cool.

flet

29 days ago

I like it!

I made this a bit ago for fun and funnies to test the idea of tearaway ads. It's very prototype but still pretty satisfying (desktop only but there's a gif on the repo)

https://github.com/Flet/tearaway

bogtog

29 days ago

It tearing when I waved my mouse around was a nice surprise

cloudfudge

29 days ago

It's rust compiled to wasm. Dude's got a lot of interesting stuff on his projects page: https://mikail-khan.com/portfolio

atan2

29 days ago

A very nice article by Marian Pekár on Verlet integration and cloth simulation:

https://pikuma.com/blog/verlet-integration-2d-cloth-physics-...

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