6 ms·
Cloth Simulation
- iberator 10mo agoMaya and Cloe 3D and almost all fashion design software have it for decades already. Niche and fascinating software. Check out some demos. Cool stuff in software you don't even know exists:)
- zokier 10mo agoOf course cloth sims of varying fidelity are everywhere. Even games have had cloth sims for decades at this point. But it is also something that remains a research problem how to do efficiently and with good results; pretty much every year in siggraph you see couple of new papers around cloth sims. For example this year we got this https://youtu.be/d9TZhtXeMio https://youtu.be/d9TZhtXeMio
- ChrisMarshallNY 10mo agoAs an artist, I needed to get it right. Wasn't as easy as I thought it would be. I had to think in 3D, to make 2D. https://littlegreenviper.com/art/Tarsus.png https://littlegreenviper.com/art/Tarsus.png https://littlegreenviper.com/art/Gym.png https://littlegreenviper.com/art/Gym.png
- fao_ 10mo agoOne of the best ways to practice this is just throwing a towel on a chair, sitting down opposite it, and sketching it
- regularfry 10mo agoThe cloth sim in Blender remains one of the most frustratingly un-updated features. I would dearly love to see it get an algorithmic refresh.
- brontosaurusrex 10mo agoAt least solver seems faster (if not better) in later versions? p.s. My try at 'flag in the wind' in Blender from around 2022: https://0x0.st/s/aJ6DNj2pEHzRdBiscEIsbQ/KCsK.mp4 https://0x0.st/s/aJ6DNj2pEHzRdBiscEIsbQ/KCsK.mp4 I do remember it took me all day to get somehow realistic motion.
- Miraltar 10mo agoExactly as discussed in Sebastian Lague's video https://www.youtube.com/watch?v=PGk0rnyTa1U https://www.youtube.com/watch?v=PGk0rnyTa1U
- TwoFx 10mo agoI 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 10mo agowould you share your godot code to github?
- atan2 10mo agoA very nice article by Marian Pekár on Verlet integration and cloth simulation: https://pikuma.com/blog/verlet-integration-2d-cloth-physics-simulation https://pikuma.com/blog/verlet-integration-2d-cloth-physics-...
- jeffreygoesto 10mo agoFor me, "Large Steps in Cloth Simulation" [0] made implicit methods accessible... Seminal paper. [0] https://dl.acm.org/doi/10.1145/280814.280821 https://dl.acm.org/doi/10.1145/280814.280821
- chombier 10mo agoFor inextensible cloth there's also "Efficient simulation of inextensible cloth" [0] that is particularly clever and efficient [0] https://dl.acm.org/doi/10.1145/1276377.1276438 https://dl.acm.org/doi/10.1145/1276377.1276438
- bogtog 10mo agoIt tearing when I waved my mouse around was a nice surprise
- clbrmbr 10mo agoThe 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 10mo agoThis. 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.
- eddieroger 10mo agoI 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.
- jan_Sate 10mo agoLooks like that I can cut it without right click by swiping fast enough.
- taeric 10mo agoFirst, 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.
- fiiisssh 10mo agoThere's actually really no knowledge of cloth involved, it's just a bunch of spring constraints: https://github.com/mkhan45/clothsim https://github.com/mkhan45/clothsim AFAIK more advanced realism-focused cloth sims are still mostly bundles of spring constraints, and most fabric behaviors are encoded as different spring tolerances, forces, and friction. Cloth self-collision and friction seem to be a very difficult problem in which progress has been made recently: https://graphics.cs.utah.edu/research/projects/ogc/Offset_Geometric_Contact-SIGGRAPH2025.pdf https://graphics.cs.utah.edu/research/projects/ogc/Offset_Ge...
- OptionOfT 10mo agoI remember the first time playing Splinter Cell. Walking back and forth through a curtain to see how it wraps around the body. So cool.
- RankingMember 10mo agoPretty cool! I kept trying to cut the piece I had just cut again by doing a "Zorro"-style motion, but no such luck.
- samcheng 10mo agoThis 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!
- robertheadley 10mo agoI wonder how far away we are from realtime Marvelous designer in games.
- mrkramer 10mo agoReminds me of Fruit Ninja but this one is Cloth Ninja.
- LyalinDotCom 10mo agoI 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 10mo agoThere's a lot of simple cloth sim examples on the internet, so I see why LLMs can code these kinds of demos easily.
- LyalinDotCom 10mo agoyeah makes sense. Im sitting here evolving my little prototype its too much fun.
- jcims 10mo agoThe 'Build' feature in AI studio has been pretty incredible for a few use cases I've thrown at it.
- hoppersoft 10mo agoI spent entirely too much time finding out exactly how much "cloth" could be supported by two "strings."
- zenoprax 10mo agoI'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.
- cloudfudge 10mo agoIt's rust compiled to wasm. Dude's got a lot of interesting stuff on his projects page: https://mikail-khan.com/portfolio https://mikail-khan.com/portfolio
- jakemanger 10mo agoThat's super cool (and FAST -> hard to do from my personal attempts). But, please, give us some nitty gritty of how you made it
- fiiisssh 10mo agoThe repo is at https://github.com/mkhan45/clothsim https://github.com/mkhan45/clothsim, it's pretty compact and most of the relevant code is in src/main_state.rs
- raylad 10mo agoFeels more like a spiderweb simulation. The fibers are sticky and stretchy.
- flet 10mo agoI 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 https://github.com/Flet/tearaway
- sliken 10mo agoNice 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
- xnx 10mo agoThought this was going to be a repost of https://oimo.io/works/cloth/ https://oimo.io/works/cloth/, which is also excellent.
- eternityforest 10mo agoI 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?