frontpage.
newsnewestaskshowjobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

Show HN: AI agent forgets user preferences every session. This fixes it

https://www.pref0.com/
1•fliellerjulian•42s ago•0 comments

Introduce the Vouch/Denouncement Contribution Model

https://github.com/ghostty-org/ghostty/pull/10559
1•DustinEchoes•2m ago•0 comments

Show HN: SSHcode – Always-On Claude Code/OpenCode over Tailscale and Hetzner

https://github.com/sultanvaliyev/sshcode
1•sultanvaliyev•2m ago•0 comments

Microsoft appointed a quality czar. He has no direct reports and no budget

https://jpcaparas.medium.com/microsoft-appointed-a-quality-czar-he-has-no-direct-reports-and-no-b...
1•RickJWagner•4m ago•0 comments

Multi-agent coordination on Claude Code: 8 production pain points and patterns

https://gist.github.com/sigalovskinick/6cc1cef061f76b7edd198e0ebc863397
1•nikolasi•5m ago•0 comments

Washington Post CEO Will Lewis Steps Down After Stormy Tenure

https://www.nytimes.com/2026/02/07/technology/washington-post-will-lewis.html
1•jbegley•5m ago•0 comments

DevXT – Building the Future with AI That Acts

https://devxt.com
2•superpecmuscles•6m ago•4 comments

A Minimal OpenClaw Built with the OpenCode SDK

https://github.com/CefBoud/MonClaw
1•cefboud•6m ago•0 comments

The silent death of Good Code

https://amit.prasad.me/blog/rip-good-code
2•amitprasad•7m ago•0 comments

The Internal Negotiation You Have When Your Heart Rate Gets Uncomfortable

https://www.vo2maxpro.com/blog/internal-negotiation-heart-rate
1•GoodluckH•8m ago•0 comments

Show HN: Glance – Fast CSV inspection for the terminal (SIMD-accelerated)

https://github.com/AveryClapp/glance
2•AveryClapp•9m ago•0 comments

Busy for the Next Fifty to Sixty Bud

https://pestlemortar.substack.com/p/busy-for-the-next-fifty-to-sixty-had-all-my-money-in-bitcoin-...
1•mithradiumn•10m ago•0 comments

Imperative

https://pestlemortar.substack.com/p/imperative
1•mithradiumn•11m ago•0 comments

Show HN: I decomposed 87 tasks to find where AI agents structurally collapse

https://github.com/XxCotHGxX/Instruction_Entropy
1•XxCotHGxX•15m ago•1 comments

I went back to Linux and it was a mistake

https://www.theverge.com/report/875077/linux-was-a-mistake
2•timpera•16m ago•1 comments

Octrafic – open-source AI-assisted API testing from the CLI

https://github.com/Octrafic/octrafic-cli
1•mbadyl•17m ago•1 comments

US Accuses China of Secret Nuclear Testing

https://www.reuters.com/world/china/trump-has-been-clear-wanting-new-nuclear-arms-control-treaty-...
2•jandrewrogers•18m ago•1 comments

Peacock. A New Programming Language

1•hashhooshy•23m ago•1 comments

A postcard arrived: 'If you're reading this I'm dead, and I really liked you'

https://www.washingtonpost.com/lifestyle/2026/02/07/postcard-death-teacher-glickman/
2•bookofjoe•24m ago•1 comments

What to know about the software selloff

https://www.morningstar.com/markets/what-know-about-software-stock-selloff
2•RickJWagner•28m ago•0 comments

Show HN: Syntux – generative UI for websites, not agents

https://www.getsyntux.com/
3•Goose78•28m ago•0 comments

Microsoft appointed a quality czar. He has no direct reports and no budget

https://jpcaparas.medium.com/ab75cef97954
2•birdculture•29m ago•0 comments

AI overlay that reads anything on your screen (invisible to screen capture)

https://lowlighter.app/
1•andylytic•30m ago•1 comments

Show HN: Seafloor, be up and running with OpenClaw in 20 seconds

https://seafloor.bot/
1•k0mplex•30m ago•0 comments

Tesla turbine-inspired structure generates electricity using compressed air

https://techxplore.com/news/2026-01-tesla-turbine-generates-electricity-compressed.html
2•PaulHoule•32m ago•0 comments

State Department deleting 17 years of tweets (2009-2025); preservation needed

https://www.npr.org/2026/02/07/nx-s1-5704785/state-department-trump-posts-x
3•sleazylice•32m ago•1 comments

Learning to code, or building side projects with AI help, this one's for you

https://codeslick.dev/learn
1•vitorlourenco•32m ago•0 comments

Effulgence RPG Engine [video]

https://www.youtube.com/watch?v=xFQOUe9S7dU
1•msuniverse2026•34m ago•0 comments

Five disciplines discovered the same math independently – none of them knew

https://freethemath.org
4•energyscholar•34m ago•1 comments

We Scanned an AI Assistant for Security Issues: 12,465 Vulnerabilities

https://codeslick.dev/blog/openclaw-security-audit
1•vitorlourenco•35m ago•0 comments
Open in hackernews

Cloth Simulation

https://cloth.mikail-khan.com/
208•adamch•2mo ago

Comments

iberator•1mo ago
Maya 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•1mo ago
Of 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

ChrisMarshallNY•1mo ago
As 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/Gym.png

fao_•1mo ago
One of the best ways to practice this is just throwing a towel on a chair, sitting down opposite it, and sketching it
regularfry•1mo ago
The 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•1mo ago
At 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 I do remember it took me all day to get somehow realistic motion.
Miraltar•1mo ago
Exactly as discussed in Sebastian Lague's video https://www.youtube.com/watch?v=PGk0rnyTa1U
TwoFx•1mo ago
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•1mo ago
would you share your godot code to github?
atan2•1mo ago
A very nice article by Marian Pekár on Verlet integration and cloth simulation:

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

jeffreygoesto•1mo ago
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•1mo ago
For 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

bogtog•1mo ago
It tearing when I waved my mouse around was a nice surprise
clbrmbr•1mo ago
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•1mo ago
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.

afandian•1mo ago
Clear you must bite your nails!
fainpul•1mo ago
Literally unplayable
brookst•1mo ago
It feels a bit like shooting at cloth.
eddieroger•1mo 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.
jan_Sate•1mo ago
Looks like that I can cut it without right click by swiping fast enough.
taeric•1mo 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.

fiiisssh•1mo ago
There's actually really no knowledge of cloth involved, it's just a bunch of spring constraints: 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_Ge...

OptionOfT•1mo 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.

RankingMember•1mo 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•1mo 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!

robertheadley•1mo ago
I wonder how far away we are from realtime Marvelous designer in games.
mrkramer•1mo ago
Reminds me of Fruit Ninja but this one is Cloth Ninja.
LyalinDotCom•1mo ago
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•1mo ago
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•1mo ago
yeah makes sense. Im sitting here evolving my little prototype its too much fun.
jcims•1mo ago
The 'Build' feature in AI studio has been pretty incredible for a few use cases I've thrown at it.
hoppersoft•1mo ago
I spent entirely too much time finding out exactly how much "cloth" could be supported by two "strings."
zenoprax•1mo 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.
cloudfudge•1mo ago
It's rust compiled to wasm. Dude's got a lot of interesting stuff on his projects page: https://mikail-khan.com/portfolio
jakemanger•1mo 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

fiiisssh•1mo ago
The repo is at https://github.com/mkhan45/clothsim, it's pretty compact and most of the relevant code is in src/main_state.rs
raylad•1mo ago
Feels more like a spiderweb simulation. The fibers are sticky and stretchy.
flet•1mo 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

sliken•1mo 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

xnx•1mo ago
Thought this was going to be a repost of https://oimo.io/works/cloth/, which is also excellent.
eternityforest•1mo 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?