TE
TechEcho
Home24h TopNewestBestAskShowJobs
GitHubTwitter
Home

TechEcho

A tech news platform built with Next.js, providing global tech news and discussions.

GitHubTwitter

Home

HomeNewestBestAskShowJobs

Resources

HackerNews APIOriginal HackerNewsNext.js

© 2025 TechEcho. All rights reserved.

Repulsive Shells [video]

155 pointsby RafelMri10 months ago

11 comments

neonate10 months ago
Paper: <a href="https:&#x2F;&#x2F;www.cs.cmu.edu&#x2F;~kmcrane&#x2F;Projects&#x2F;RepulsiveShells&#x2F;index.html" rel="nofollow">https:&#x2F;&#x2F;www.cs.cmu.edu&#x2F;~kmcrane&#x2F;Projects&#x2F;RepulsiveShells&#x2F;ind...</a>
url0010 months ago
The ending was unexpected but great haha. I&#x27;m curious if the algo is fast enough for real time or if it&#x27;s only for renders.
评论 #41081512 未加载
jauntywundrkind10 months ago
The main example is a dude moving his arms around, and the repulsing shell&#x2F;surface kind of interpolates through the motion semi smoothly.<p>I could totally see something like this being useful or interesting for destructive physics in video games. Like, oh, this surface&#x2F;shell is about to repulse a rocket slamming into it, deform it for this hit. It&#x27;s be a very different application but there&#x27;s a kernel of morphology here feels similar ish, of this kind of softbodied-at-a-distance simulation.<p>Based on other comments though it sounds way too slow to consider for realtime games though.
maxglute10 months ago
Is there a standard underwear man model like the teapot? I find it&#x27;s use hilarious considering there&#x27;s no reason for model to be in underwear. Same with the butt&#x2F;hip model at the end. Chefs kiss.
financypants10 months ago
Does this have implications for gaming? I know character models with lots of &quot;accessories&quot; clip into walls and the character body very often, and from what I gathered, the belief was that this was a hard and manual problem to solve.
评论 #41083698 未加载
anotherhue10 months ago
That triggered my Watership Down childhood PTSD.
romwell10 months ago
I was hoping that this would be about computational geometry (and not, say, about the C shell or Powershell), and I am glad it indeed was.<p>TL;DR: they are talking about approach to 3D geometry which avoids self-intersection by design, which is something useful for modeling solid bodies.<p>However, I hope someone makes a video about shells that are hard to use too :)
评论 #41081647 未加载
评论 #41084254 未加载
actionfromafar10 months ago
It was kind of repulsive
dosman3310 months ago
&quot;So.. what will the world do with this knowledge?&quot;<p>&quot;Something something, rule 34.&quot;
评论 #41083047 未加载
monkpit10 months ago
And here I thought groovysh was a repulsive shell.
brotchie10 months ago
Haven&#x27;t read the paper, but guessing, in the limit, this is simulating the electromagnetic interaction between electron shells of atoms?