Computer modeling breakthrough (repulsive shells: SIGGRAPH 2024)
amazing breakthrough for folding virtual laundry models. has applications for video games, robotic grasping and other 3d animation stuff!

i love the idea of my video game models moving more lifelike when grabbing things.
also has cool applications for robots picking up household items
The problem
Deforming 3d models in a way that doesnt intersect is really really hard.

the paper rethinks model intesection at a fundamental level.
Old way: physics that shit

Cons: looks like ass, Pros: ????
New method: Math shit

Instead of running a physics sim. convert the model into a math surface and generate the new poses based on interpolating in this math surface. state space can cheaply calculate where two meshes are least likely to intersect.

See the sections with ∞ symbol. those are sections of the 'intersection free shape space' that clip the model = bad. the blue line = good path
Most impressive part is at 8:03 / 11:15 showing grasping hands interaction. a very common occurance in video games. now can be done much better
Cons: slow, or on par with physics sims


















More video
Authors of paper
JOSUA SASSEN, University of Bonn, Germany and École normale supérieure Paris-Saclay, France
HENRIK SCHUMACHER, Chemnitz University of Technology, Germany and University of Georgia, USA
MARTIN RUMPF, University of Bonn, Germany
KEENAN CRANE, Carnegie Mellon University, USA
Bonus stuff
Keenan Crane - Repulsive Shells

Thanks for taking a look!

Author 
by o(r(a(n c)o)l)l)i)n)s
github.com/wisehackermonkey