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Great Realtime Online Cloth Physics Simulation

jrc313.com — Works excellent and it's realtime.

Who dugg this? Made popular Apr 22, 2007

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38 Comments

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  • GawtMilk, on 10/12/2007, -5/+82Very good ELASTIC simulation. A little too springy too be cloth (if I move the sleeve of my shirt, the collar doesn't bounce), but very impressive nonetheless.
  • vertinox, on 10/12/2007, -1/+37Maybe it was intended for people doing video games based in the 80s so you would have a proper spandex simulation.
  • mercurysquad, on 10/12/2007, -0/+30All hail cloth simulation for safety!
  • snoopl3s, on 10/12/2007, -1/+27Oh crap, wrong article! Sorry...
  • gklitt, on 10/12/2007, -2/+26This is very cool and realistic. You can find more similar physics simulations at

    http://www.cs.princeton.edu/~traer/physics/

    I particularly like "dangly pendulum" :

    http://www.cs.princeton.edu/~traer/danglypendulum/
  • inactive, on 10/12/2007, -10/+33http://img402.imageshack.us/img402/8056/hjwx6.png

    is it bad that this is the first thing thing I made?
  • blahtastic, on 10/12/2007, -5/+26Dangly pendulum....heh...lol /immature
  • ponk, on 10/12/2007, -0/+12*shameless self promotion*
  • HarryHunt, on 10/12/2007, -2/+13Cloth simulation is one of the harder things in physics because the interactions are very complex. Plus, physics simulation in general is pretty darn difficult because the underlying math is hard to do efficiently on a CPU. If you want to know how complex it actually is, check out the source code to the open dynamics physics engine and you'll be amazed.
  • GawtMilk, on 10/12/2007, -1/+7My pink mumu doesn't wiggle either, if that's what you're asking.
  • Ozeki, on 10/12/2007, -0/+4Although this still looks good and even though its weird that you can stretch the lines like that, the challenge about "cloth" simulation is not to actually render the cloth realistically but to simulate a realistic collision between the cloth and another object. Be that a game character or any other geometry.

    That is the real challenge in the realtime domain of expertise.
  • yoyobye, on 10/12/2007, -0/+4Well well, Faces are "Physic-AL"... but still, it's not even a very good pic! At least spam something worth while :-)
  • ohnnyj, on 10/12/2007, -0/+4This is actually not as hard as it looks. We did this in our animation class at UCSD. Just need to know the right equations.

    http://graphics.ucsd.edu/courses/cse169_w07/CSE169_15.pdf

    You can create other cool things, such as Jell-O, with these same techniques.
  • hokkos, on 10/12/2007, -0/+3Here it is not cloth simulation for me, only particule + spring, and w/ collision detection, so very easy to do, and not demand lot of CPU.
  • Leomarth, on 10/12/2007, -3/+5Amazing work.
  • returnofmalv, on 10/12/2007, -0/+2This could be done in realtime 5 years ago. It's only a particle simulator using springs, nothing fancy.
  • XStatic, on 10/12/2007, -0/+2More like a sheet of jello....
  • gene, on 10/12/2007, -0/+2Just needs more vertices, man.
  • rimco, on 10/12/2007, -2/+3Anitab, I'm going to be a dick and point out that it's not a flash game... it's Java.
  • diggumjonez, on 10/12/2007, -0/+1I am amazed every day at some of the projects being done with Processing. I've only just started getting my feet wet, but i'm already writing apps that create some killer graphics.
  • SuckMyDigg, on 10/12/2007, -0/+1Ok truthfully, how many of you made a thong like I did?
  • SaxxonPike, on 10/12/2007, -0/+1It is a nifty elastic surface simulation for the platform it's written on. As for the rest of you who are expecting too much, you guys still have to learn not to take Digg articles at face value.
  • anitab83, on 10/12/2007, -4/+5Did you also see the online flash game at the same site?
    http://digg.com/playable_web_games/Simple_yet_fun_online_game

    I was drawn to the simplicity, but ended up playing for over an hour. I guess the stats about women being online game addicts are right (doesn't make me any better though).
  • wattznext, on 10/12/2007, -0/+0@nekitip

    "works excellentLY..." It's an adverb my friend... Hey, heres an adverb related joke

    If a fish doesn't have a nose, how does it smell?
    Terrible!

    Eh? Eh?
  • patchsuperstor, on 09/30/2008, -0/+0I happened across this rather nice spring physics library for Processing, so I thought I'd try making a simple cloth simulation to see what it was capable of. Turns out it's really easy to use and works exactly as advertised. I think it's time for a little more experimentation.
  • inactive, on 10/12/2007, -1/+1Well, when you try to spin it to ravel it up, it doesn't ravel... It just stays flat... Buried. No fun.
  • polyGone, on 10/12/2007, -1/+1http://www.sodaplay.com/

    Click on the zoo to see other peoples.

    You can create your own here. There is a whole community of developers.
  • DeskFlyer, on 10/12/2007, -1/+1Very neat. Thanks for sharing.
  • Ganchula, on 10/12/2007, -1/+0I'm chortling at the people who think this is a good cloth simulation. This is the most basic elastic spring/mass simulation you could do. It's not that hard to make a cloth sim that does not behave like a sheet of rubber.
  • paulmdx, on 10/12/2007, -3/+2@HarryHunt: Your comment sounds like it was from 10-15 years ago.

    The sample here is a classic university 'fun' project. It's not terribly difficult to achieve. If the library behind this is highly complex, it probably does a LOT more than this demo shows.
  • inactive, on 02/25/2009, -3/+0This owns!
  • Junkyarddawg, on 10/12/2007, -11/+7Yep, more rubber sheet simulation than cloth simulation, but still very cool.
  • JamesWilson, on 10/12/2007, -6/+1I'd love to see Processing ported to flash. :) then we'd see some serious speed.
  • HarryHunt, on 10/12/2007, -5/+0Excellent and amazingly fast considering that it's an applet.
  • moft, on 10/12/2007, -8/+3GawtMilk: "(if I move the sleeve of my shirt, the collar doesn't bounce)"

    ur not wearing your silk floral shirt, that's why.
  • LLuthor, on 10/12/2007, -8/+2This is a lame "simulator". It does not even handle self-collisions properly and frankly runs too slowly to be useful for real cloth sims (1/2 million polygons, collisions, self-collisions, proper constraint weights system etc).

    A good example of a real cloth sim is syflex: http://www.syflex.biz/gallery.html
  • edmack, on 10/12/2007, -12/+6Why is everyone so impressed by this? It's the most basic physics sim imaginable - and the example is low resolution and not even rendered nicely!
  • snoopl3s, on 10/12/2007, -13/+3Silly people, it's for your safety! You don't need your freedoms and liberties, you are the root of all evil in the world. People cause crime because all people are evil (except all of the big government bureaucrats). You simply cannot be trusted with your freedoms, as they cause CRIME. Help us and just bow to our feet! You can trust us, it's for your safety!

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