[SIGGRAPH 2018] A Multi-Scale Model for Simulating Liquid-Fabric Interactions
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- Опубліковано 10 тра 2018
- Source Code: github.com/nepluno/libwetcloth
Extra Video 1: • Pour on Porous Plastic
Extra Video 2: • Honey Dripping on Cloth
Talk: • Technical Talk: A mult...
Technical Details: www.cs.columbia.edu/cg/wetclot...
Project Page: libwetcloth.info/
We propose a method for simulating the complex dynamics of partially and fully saturated woven and knit fabrics interacting with liquid, including the effects of buoyancy, nonlinear drag, pore (capillary) pressure, dripping, and convection-diffusion. Our model evolves the velocity fields of both the liquid and solid relying on mixture theory, as well as tracking a scalar saturation variable that affects the pore pressure forces in the fluid. We consider the porous microstructure implied by the fibers composing individual threads, and use it to derive homogenized drag and pore pressure models that faithfully reflect the anisotropy of fabrics. In addition to the bulk liquid and fabric motion, we derive a quasi-static flow model that accounts for liquid spreading within the fabric itself. Our implementation significantly extends standard numerical cloth and fluid models to support the diverse behaviors of wet fabric, and includes a numerical method tailored to cope with the challenging nonlinearities of the problem. We explore a range of fabric-water interactions to validate our model, including challenging animation scenarios involving splashing, wringing, and collisions with obstacles, along with qualitative comparisons against simple physical experiments.
Yun (Raymond) Fei, Columbia University, USA
Christopher Batty, University of Waterloo, Canada
Eitan Grinspun and Changxi Zheng, Columbia University, USA
Soundtrack by SnowMusicStudio - Фільми й анімація
![[SIGGRAPH 2018] Toward Wave-based Sound Synthesis for Computer Animation](http://i.ytimg.com/vi/su6z9snjU-U/mqdefault.jpg)
i can already smell the GPU burnin
@@chrisguy6301 maybe PhysX accelerated
lemme rephrase that, hardware accelerated**
You can run it long enough to take a single cool screenshot to show off, then your PC will rest in pieces
cuDNN
mb CPU? nope? -_-
I'm predicting this will first be used commercially in simulating a wet t-shirt contest.
Games?
Matrix29bear what
Tuxfanturnip that's what "in"cel losers actually think. ;)
Matrix29bear found the virgin
Wow, you definitely have a problem with porn.
Now this is how you show your research. It doesn't need to be a lifeless video. 10/10 soundtrack. Thanks
Very well done!
Can’t wait for games to be hyper realistic like this and probably run on VR. Ooooooh boy. Can’t wait till I’m 80.
i mean if we don't burn our entire planet before then
Nienke Timmermans orange man bad. Orange man make weather hot
@@alext2046 Are you a caveman?
@@titanicjames3146 woosh
@@alext2046 i mean, trump IS pretty fucking stupid, and personally he doesn't make for a good president. the fact he denies global warming only proves that
For some reason i was really amazed by that towel not clipping or weirdly stretching
thats literally the least impressive part of this video
cool opinion
nah but like if you've ever simulated cloth thats how it normally acts
@@michaeladams3762 only in good simulations... there are lots of terrible simulation techniques out there... and a lot of software uses them by default...
Robonator if impressive is defined as difficult to achieve, but achieved anyway, then it is not an opinion
Born to late pioneer new lands, born to early to travel the galaxy, born just in time for wet towel simulation physics.
This is way beyond anything I've seen so far. Just amazing. I can't even begin to imagine the work that went into this.
That's pretty impressive. Congratulations to everyone involved.
Amazing! Hard to believe that at the first SIGGRAPH they were "oohing" and "awing" at rotating, non-shadowed or reflected company logos. My, how far we've come...
This looks awesome.
It seems to drip too easily.
It is still very impressive though, probably just needs some tweaking and comparisons with real experiments to tune it.
Also water resolution is still noticeable, but that can ptobably be increased easily with more processing power..
For whatever reason this is recommended to me and I like it.
that water looks THICC
Σ5 never thought someone would say that
I am immensely stunned
Cool! This answered questions I never even knew I had.
The tighten the towel game looks like it's gonna be awesome. I'm gonna wring the hell out of that towel.
To me personally, animated water looks either way too viscous, or has too much surface tension.
Yeah, that's the problem with fluids in general, since they have a set resolution per particle of liquid they behave more like gel or sand.
@@Monkeynuts502 Damn you technological limitations!
It's not a question of technical limitations, it's a question of how long you're willing to wait for the simulation to run. If you set the resolution high enough and get the parameters right it's long been possible to create fluid simulations that are entirely indistinguishable from reality.
@@Bob3D2000
We can real time ray trace fluid Sims!, just not anywhere near cloth like this, that would be insane. Give is a couple years. AI is going to fix all of this.
@@index7787 i wanna see that normal pc that sims water in real time with shader and lighting with billions of particles in real time
Astounding
:0 Joseju!!
This is incredible!
Super impressive stuff... I guess the next step is to simulate the varying levels of saturation throughout the towel after you ring it to get those dry/wet creases we see in real life...
The physics that went into this must be crazy!
This is awesome!!!
who knew that a UA-cam recommendation would help me find what i want to do for graduate studies
Amazing!
Awesome stuff
amazing
Impressive!!
CG golden showers animators are so happy right now
Nextgen!!!
Really awesome stuff and very well presented! Congratulations! 👍👍👍 Any plans on working with hair and fur?
We have released our simulator for hair and fur last year (libwethair.info).
Raymond Yun Fei oh great, thank you 😊
I can't wait to see this implemented in video games come 2035.
Oh hey, Christopher Batty was my Numerical Computation professor. Pretty good prof.
We've had all this shit with mind-blowing demos with Relief Mapping, Digital Molecular Matter, Euphoria, Wiimote tracking, Geometrical Shaders, etc. It didn't get anywhere and was not used in any game (except like 5 ten year old games) and this one will die the same way.
This looks freakin' awesome! What are your general use cases for this software?
Is the fluid in the demo simulated by Material Point Method? The rendering is also very cool.Using houdini?
Yes it's augmented Material Point Method, and yes it's using Houdini for the rendering.
That's dope
Such an incredible work! How much years of development did it take?
awsum
ANyone else just getting cloth simulations in their recommended. I mean im not complaining tho
and one scene takes 5 days to fully render.....NICE!
VR will be crazy immersive 15 years from now.
so what your saying is expect to see this implemented in movie CG about next year
this looks amazing would you be willing to publish a hip file?
Didnt know you could use HTC Vive sensors to hang cloth to dry.
Imagine what we could do with this if it were realtime?
Draw a dick? Somehow any amazing hi-tech makes people want to only draw dicks.
no one asked for this but damn i want it in games
Can't wait for VR ShamWow ads.
2:48 got me feeling in some way
I can't wait till commercial computers get good enough to run these kinds of simulations in real time for videogames!
wow!!!
It's cool but it doesn't feel quite right somehow. Isn't it dripping for way longer than it should ?
Willy J. I think if how much the cloth can retain liquids can be adjusted, that would be fixed. Then again, this is a huge ball of liquid so maybe it's normal for them to be dripping wet for so long.
@Terrance. It's normal for your mom... I'm just kidding dude. I'm an ass.
Look at the replay speeds. Most are 8 times slower than real time, some 4 times.
I feel the same, and after water is absorbed it also stais on the surface as liquid making the cloth really reflective for way too long, its not sucked into the cloth well
nice
Can you make liquid water next
What musical composition is playing during the video? Interesting information and the video, good luck team!
Thanks! The soundtrack was done by SnowMusicStudio, and can be found on AudioJungle.
Some smart dude: We have technology
Realistic Games/Animations: *Wet Blanket*
towel simulator, the next big game after gta 5
We are closer and closer to a simulation likely being our reality everyday...
That's cool and all, but can you make the towel shrink and wrinkle when it dries? Yes. This is cool stuff
The water at the end seems like slime :I whut !
This is amazing what are the sim times like? and on what hardware?
You may find that info in our paper: www.cs.columbia.edu/cg/wetcloth/main.pdf
Generally the sim will take several seconds for a time step, on a 32-core workstation.
You should sell this technology to Sidefx Houdini
idk wtf you saying but, Here take my money, I want it!
will this library be implemented in DirectX 13?
I want to see this in the next gen games. : D
That's impressive. However why does the water in the demo often look like clear liquid glue?
I guess because they're replayed in slow-mo.
Oh right good point
They are simulating water known as "Chubby Rain".
Nice! How do you know it's right btw? Did you use any real life reference?
Yes, use some real life observation.
cool stuuf
Thanks for ruining my final "am I in the matrix" test
ive remember days when i first saw havok in 3dsmax r3... maybe it was in later....
2050 VR is gonna be lit
i think these videos will be the dreams of advanced robots with artificial intelligents.
4:46 I don't understand why the simulation flexes downward when there's no force applied to it yet?
The plane was frozen in the air before the simulation and then when they hit play, gravity was enabled before the water hit it.
They should have run the simulation for a couple of seconds before dropping the ball of water, then just not shown the first couple of seconds.
When will this be available in Blender?
when will this be available for public use...…...damn
wow, the last one is kinda impressive. still needs work though...
cant wair for my Playstation 9 Pro Silver Edition
can we start doing simulations with a real world physics as control? Setup a real world test that simulation is trying to mimic and show us how closely the simulation is matching with what actually happens in real world
From 4:39 on, why does the yellow cloth suddenly sag _before_ the falling water even makes contact with it? You can see it clearly with the slow-motion replay at 4:44.
I think that is just gravity taking hold. At frame 0 the cloth is positioned completely flat, then it droops as the physics simulation is run.
Highest recorded GPU temp while doing this?
GTA VI will be only runnable on NASA computers
Or can we even use this and for what price?
Defs needs some tweaking, but cool.
That last part that water looked so viscous it hurt
i honestly thought it was real for a second
Woah
oh look....more stuff we'll never see in games.
Why does normal speed look like it's actually sped up???
Imagine this in an adventure game, so when your characters moves or gets out of water - only the parts of cloth that actually went underwater are wet, and there isn't just a timer for how long it takes to dry but it would actually drip with physics. You could also add a vaporization effect that removes more of the liquid particles depending on temperature.
There are much simpler and GPU-efficient ways to do this kind of thing, but not even close to the quality in this video.
it looks amazing and seems accurate, but for what you gonna use it? for wet t-shirt contest simulations?, exept that you can not do that because you never showed how two fabrics in contact transfer the liquid to each other (you know, the t-shirt and the bra)
aside from that, for commercials?
@Artur Terho yeah no, this kind of simulation is so heavy that any game dev would dare to use it
For CG character coming out of the water. They'll wear clothes. Have you watched Alita: Battle Angel and notice there's a second when Alita walked out of water?
@@fyun0acm oh i forgot that CGI was a thing, i completely retract from what i said
wow...
Clothes Line Simulator 2018
Yeah this is cool but i have one problem an that is that cloth when wet will stay on top of the water not go through is, that is an improovement yu can add
i cannot believe what im looking at
У меня даже от просмотра видео начал комп глючить.
I peed my pants while watching this video in solidarity
This is a very cool job but I'm pretty sure working on it can be frustrating.
the water at the towel looks like a gel
Nice project. What’s the music?
The music is done by Snow Music Studio. You may find their works on audiojungle.net/user/snowmusicstudio/portfolio
Somehow it looks like some type of liquidish gel in a high gravity environment, instead of watter...
I'm about to model a wet t-shirt contest
I think there should have been validation of the simulation data with real experiments for each condition you guys tested for
You're right. The validation is left for future works.