4 ms·

Putting Rigid Bodies to Rest

• pvg 1y ago
  Paper https://hbaktash.github.io/files/rolling_dragons_paper.pdf https://hbaktash.github.io/files/rolling_dragons_paper.pdf and more related stuff on the page of one of the authors https://hbaktash.github.io/ https://hbaktash.github.io/
• spencerflem 1y ago
  I love this !! Only kinda related but I love having the opportunity to share this website, cataloging every possible fair die: http://www.aleakybos.ch/Shapes.htm http://www.aleakybos.ch/Shapes.htm (ie: not the sort of die in the post, they must have identical faces. this thread gave me a new appreciation for the non equal faced dice tho)
• iwontberude 1y ago
  I don’t think it gets much better than this. How exceedingly clever.
• 90s_dev 1y ago
  Does this mean 2d physics simulators are about to get N times faster? Because that'd be cool if N is big enough.
  • almostgotcaught 1y ago
    > our key observation is that we can identify dynamically stable configurations of a rigid body, and calculate their associated probabilities > this model is purely geometric, and does not directly account for momentum answer: no
• Cieric 1y ago
  I don't have enough time to read the paper in full right now. But I'm curious if using this they could possibly find the solution to the 3 sided coin problem. I haven't heard anything about it since I watched the matt parker video about it. https://youtu.be/-qqPKKOU-yY https://youtu.be/-qqPKKOU-yY Or I guess if anyone else knows the answer, that would also satisfy my curiosity.
  • deleted 1y ago
    [deleted]
  • Scaevolus 1y ago
    They should be able to simulate it! Here's another answer: https://news.ycombinator.com/item?id=33776796 https://news.ycombinator.com/item?id=33776796
    • hnuser123456 1y ago
      Looks like that post author forgot to loop back to the original question once they found a model that fit their own simulations. Just visually going off the chart, the answer is a "coin" has a 1/3 chance of landing on its edge when its height is 1.7x its radius, or 0.85x its diameter. (the blog author used half-height and the paper he found uses full height)
• deleted 1y ago
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• spwa4 1y ago
  [flagged]
  • qoez 1y ago
    There's still way more signal there then really any other social network (even youtube is getting slop-y)
    • deleted 1y ago
      [deleted]
    • ninkendo 1y ago
      I’d never know, every time I follow a twitter link there’s just a full page login form that blocks me from viewing the link. Twitter should be treated like a paywalled site here, IMO. I have no ability to read links like these unless I make an account, which I will never, ever, ever do.
• djmips 1y ago
  I tried to apply the Pass the Pigs probabilities to the game scenario Points / Name / Probabilities 15 / Leaning Jowler / 3.8% 60 / Double Leaning Jowler / 0.14% 05 / Razorback / 20.9% 20 / Double Razorback / 4.37% 05 / Trotter / 10.2% 20 / Double Trotter / 1.04% 10 / Snouter / 5.4% 40 / Double Snouter / 0.29% (Dot Side 27.2% Non Dot Side 32.5%) 01 / Sider / 18.0% loose all points for turn and end turn / Pigout / 17.7% loose all points in game and end turn / Oinker / ?? eliminated from game / Piggy Back / ?? Reference https://www.youtube.com/watch?v=cxmQqXTvlaA https://www.youtube.com/watch?v=cxmQqXTvlaA