Simulation of Monge-Ampère gravity in a 60 Mpc/h cube, 256^3 particles, z=5.
Article:

with Yann Brenier and @MohayaeeR arxiv.org/abs/2404.07697
Monge-Ampère gravity (right half) creates more abundant and more diffuse filaments as compared to 𝚲CDM (left half) where filaments appear to be more fragmented.

1/N
Have you every wondered how a microprocessor works ? How many sheets of paper do you need to write the schematics or description of a processor ? How many years do you need to study before being able to design your own processor ? How much money does it cost to try that ? 2/N
>Yes;1;0.05;$50
>What's that ?
>Answers to the questions in the previous post

#geogram #geometry #programming
Hello darkness my old friend ...
Diving into exact triangle intersection code, that is exactly bugged !
Revisiting the whole approach, hopefully much much simpler in the end You may think that once you have exact predicates it is piece of cake, but there is a surprisingly long list of particular cases: trlgs can be in the same plane, touch along a vrtx, an edge, isect can be a single point, a segment, a little triangle, it can even be a hexagon !

#geogram is a programming library of geometric algorithms
github.com/BrunoLevy/geog… 2/N
It has fundamental geometric algorithms (Delaunay/Voronoi in 2D and 3D)
github.com/BrunoLevy/geog…
github.com/BrunoLevy/geog…

#geometry #programming
New #geogram tutorial on surface reconstruction from #pointsets:

github.com/BrunoLevy/geog… Coming next:
- remeshing
- parameterization and texture mapping

What's that ?
The raw scanner data for armadillo.
Can we reconstruct the armadillo from it ? Step 1: Filter outliers