So imagine power and internet outage but you do want to have some communication with the outside world.

What open infrastructure would you try to utilise or would you suggest? #MeshCore or #Meshtastic?

(The former seems to have much better coverage in my area)

#LoRa #Meshing #Mesh #Communication

Meet Taubin smoothing. It is a nice smoothing method that is great for smoothing voxel based meshes. So for smoothing stepped "Lego-like" meshes.

The left here shows a raw voxelised (thresholded) voxel boundary surface. On the right is the Taubin smoothed result.

Taubin smoothing works by first doing an aggressive Laplacian smoothing step (a bit like a blurring), which removes bumps etc, but which unfortunately can distort the shape too (e.g. unwanted shrinkage/growth). Next it uses an "inverse smooth" (a bit like a sharpening operation) to attempt to push back the shape a bit to avoid distortion. With the right parameter choices it can perform really well.

This animation is for a thresholded 3D image. The colors are the original voxel intensities. The resulting shape presents as a central sphere like blob contained in a dodecahedron "cage".

See also: https://doi.org/10.1145/218380.218473

#GeometryProcessing #JuliaLang #Makie #Meshing #TilingTuesday

I finally have a site for my mesh booleans! It's been almost 3 years since my EMBER paper. We basically took the "imul" i64 x i64 -> i128 instruction and built a geometry kernel out of that.

So, if you like robust, exact, high-performance mesh booleans (for graphics, VFX, 3D printing, CAE, ...), you might find this interesting: https://solidean.com/

(This is my commercial project, though we want to open-source the exact predicates & constructions in the future)

#geometry #graphics #meshing

Langsam aber sicher trudelt meine MeshCore-Hardware ein. Drei WisBlocks sind schon als Repeater programmiert. Jetzt warte ich noch auf Solarpanel und Antennen, dann werde ich die Teile mal provisorisch an ihre zukünftigen Orte hängen und den Empfang testen.

Nachdem ich diesen Thread gelesen habe, bin ich froh, mich nicht für Meshtastic entschieden zu haben:

https://partyon.xyz/@nullagent/115005174102950908

#meshcore #meshtastic #lora #meshing #communication #blackout #funkloch #münstertal #bollschweil #ehrenkirchen

Gmsh FEA & CFD mesh generation with MATLAB

https://fed.brid.gy/r/https://forem.com/precise-simulation/gmsh-fea-cfd-mesh-generation-with-matlab-586a

Coming soon to #comodo: constrained #Delaunay triangulations. Which I decided needs parameterized #Batman curves too for testing purposes 🦇

#julialang #GeometryProcessing #meshing #ComputationalDesign