Finally, This Table Cloth Pull is Now Possible! 🍽

5:49

Finally, This Table Cloth Pull is Now Possible! 🍽

Two Minute Papers 07.12.2021 71 771 просмотров 4 909 лайков

Machine-readable: Markdown · JSON API · Site index

Смотреть на YouTube

Поделиться Telegram VK Бот

Транскрипт Скачать .md

Анализ с AI

Описание видео

❤️Check out Perceptilabs and sign up for a free demo here: https://www.perceptilabs.com/papers 📝 The paper "Codimensional Incremental Potential Contact (C-IPC)" is available here: https://ipc-sim.github.io/C-IPC/ Erratum: The cover page in the first frame of the video is from a previous paper. It should be pointing to this: https://ipc-sim.github.io/C-IPC/file/paper.pdf ❤️Watch these videos in early access on our Patreon page or join us here on YouTube: - https://www.patreon.com/TwoMinutePapers - https://www.youtube.com/channel/UCbfYPyITQ-7l4upoX8nvctg/join 🙏 We would like to thank our generous Patreon supporters who make Two Minute Papers possible: Aleksandr Mashrabov, Alex Haro, Andrew Melnychuk, Angelos Evripiotis, Benji Rabhan, Bryan Learn, Christian Ahlin, Eric Martel, Gordon Child, Ivo Galic, Jace O'Brien, Javier Bustamante, John Le, Jonas, Kenneth Davis, Klaus Busse, Lorin Atzberger, Lukas Biewald, Matthew Allen Fisher, Mark Oates, Michael Albrecht, Michael Tedder, Nikhil Velpanur, Owen Campbell-Moore, Owen Skarpness, Rajarshi Nigam, Ramsey Elbasheer, Steef, Taras Bobrovytsky, Thomas Krcmar, Timothy Sum Hon Mun, Torsten Reil, Tybie Fitzhugh, Ueli Gallizzi. If you wish to appear here or pick up other perks, click here: https://www.patreon.com/TwoMinutePapers Thumbnail background design: Felícia Zsolnai-Fehér - http://felicia.hu Meet and discuss your ideas with other Fellow Scholars on the Two Minute Papers Discord: https://discordapp.com/invite/hbcTJu2 Károly Zsolnai-Fehér's links: Instagram: https://www.instagram.com/twominutepapers/ Twitter: https://twitter.com/twominutepapers Web: https://cg.tuwien.ac.at/~zsolnai/ #gamedev

Оглавление (15 сегментов)

<Untitled Chapter 1>

Dear Fellow Scholars, this is Two Minute Papers with Dr. Károly Zsolnai-Fehér. Today is a glorious day, because we are going to witness the first table cloth pull simulation

Table Cloth Trick - 0.5m/s Pull

I have ever seen. Well, I hoped that it would go a little more glorious than this. Maybe if we pull a bit quicker. Yes, there we go, and…we’re good. Loving it. Now, if you are a seasoned Fellow Scholar, you might remember from about 50 videos ago that we covered the predecessor of this paper, called Incremental Potential Contact, IPC in short. So, what could it do? It could perform seriously impressive squishing experiments. And it also passed the tendril test, where we threw a squishy ball at a glass wall, and watched this process from the other side. A beautiful, and rare sight indeed. Unless you have cats and glass tables at home, of course. Outstanding.

Knife Pleats Rhumba

So, I hear you asking, Károly, are you trying to say that this new paper tops all that? Yes, that is exactly what I am saying. The table cloth pulling is one thing, but it can do so much more.

Table Cloth Trick - 4m/s Pull

You can immediately start holding on to your papers, and let’s go. This new variant of IPC is capable of simulating super thin materials, and all this in a penetration-free manner. Now, why is that so interesting or difficult? Well, that is quite a challenge, remember this earlier paper with the barbarian ship. Tons of penetration artifacts. And that is not even a thin object. Not nearly as thin as this stack would be.

Related Work: Constraint Offset

Let’s see what a previous simulation method would do with this if these are 10 millimeters each. That looks reasonable, now let’s cut the thickness of the sheets in half. Yes, some bumpy artifacts appear, and at 1 millimeter, my goodness. It’s only getting worse. And, when we plug in the same thin sheets into the new simulator.

C-IPC: Controllable Elastic Thickness

All of them look good, and what’s more, they can be simulated together with other

C-IPC: Indentation Effect via Elastic Thickness

elastic objects without any issues. And this was a low-stress simulation. If we use the previous technique for a higher-stress simulation.

Challenge: Thickness modeling under Large Stress

This starts out well, until…uh-oh. The thickness of the cloth is seriously decreasing over time. That is not realistic. But, if we plug the same scene into the new technique, now that is realistic.

C-IPC: Inelastic Thickness with Constraint Offset

So, what is all this good for? Well, if we wish to simulate a bowl of noodles, tons of thick objects, let’s see if we can hope for an intersection-free simulation. Let’s look under the hood…and, there we go!

Noodles - bottom view

All of the noodles are separated. But wait a second, I promised you thin objects, these are not thin. Yes, now these, are thin. Still, no intersections. That is absolutely incredible. Other practical applications include simulating hair.

Braids

Braids in particular. Granular materials against a thin sheet work too. And, if you have been holding on to your papers so far, now, squeeze that paper, because the

Cards: Bridge Finish

authors promise that we can even simulate this in-hand shuffling technique in a virtual world. Well, I will believe it when I see it.

"Precision" Bridge Shuffle

Let’s see…my goodness. Look at that. Love the attention to detail where the authors color coded the left and right stack so we can better see how they mix, and if they intersect. Spoiler alert: they don’t. What a time to be alive! It can also simulate this piece of cloth with a ton of detail, and not only that, with large

Cloth on Sphere

timesteps, which means that we can advance the time after each simulation step in bigger packets, thereby speeding up the execution time of the method. I also love how we get a better view of the geometry changes as the other side of the cloth has a different color. Once again, great attention to detail. We are still in the minutes per frame region, and note that this runs on your processor, therefore, if someone can implement this on the graphics card in a smart way, it could

Spheres

become close to real time in at most a couple papers more down the line. And, this is a research paper that the authors give away to all of us, free of charge. How cool is that. Thank you. Thank you so much for creating these miracles and just giving them away for free. What a noble endeavor research is! Thanks for watching and for your generous support, and I'll see you next time!

Другие видео автора — Two Minute Papers

Ctrl+V

Экстракт Знаний в Telegram

Экстракты и дистилляты из лучших YouTube-каналов — сразу после публикации.

Подписаться

Лучшие методички за неделю — каждый понедельник