#geogram — Public Fediverse posts

All lights green:
#geogram works fine with Visual C++ 2026 (and all modern compilers)

All lights green:
#geogram works fine with Visual C++ 2026 (and all modern compilers)

Ooh, #geogram 1.9.9 is out !
What's geogram ?
What, you don't know already ? What are you waiting for ? Take a look here ⤵️
https://github.com/BrunoLevy/geogram/releases/tag/v1.9.9

Ooh, #geogram 1.9.9 is out !
What's geogram ?
What, you don't know already ? What are you waiting for ? Take a look here ⤵️
https://github.com/BrunoLevy/geogram/releases/tag/v1.9.9

#geogram 1.9.9 will be coming soon !

#geogram 1.9.9 will be coming soon !

≪ ESP32-C3 Mini diesmal mit … ≫

Der einzige, aber entscheidende Unterschied zwischen beiden Devices ist der externe Antennenanschluss. Ich bin auf die Reichweite gespannt. 😀

🔗 https://de.aliexpress.com/item/1005009475909411.html

#Geogram #Messenger #Kommunikation #Notfallkommunikation #Mesh #LoRa #WiFi #ESP32

≪ ESP32-C3 Mini diesmal mit … ≫

Der einzige, aber entscheidende Unterschied zwischen beiden Devices ist der externe Antennenanschluss. Ich bin auf die Reichweite gespannt. 😀

🔗 https://de.aliexpress.com/item/1005009475909411.html

#Geogram #Messenger #Kommunikation #Notfallkommunikation #Mesh #LoRa #WiFi #ESP32

≪ ESP32-S3 ePaper 1.54" (Waveshare) ≫

Schön anzusehen ist wohl alles, was mit ihm zurzeit möglich ist. Aber der Geogram-Entwickler arbeitet bereits an der Firmware. Ich hatte das Device nur schon im Voraus bestellt. 😀

🔗 https://github.com/geograms/geogram/blob/main/wiki/ESP32-Devices-and-Firmware.md#esp32-s3-epaper-154-waveshare

#Geogram #Messenger #Kommunikation #Notfallkommunikation #Mesh #LoRa #WiFi #ESP32

≪ Erste Tests ≫

Das ist jetzt zwar nicht der ESP32-C3 Mini, der schlussendlich auf den Dachboden soll, tatsächlich kommt dort eine Version mit einem externen Antennenanschluss hin, aber einen ersten Test lasse ich mir dann doch nicht nehmen. 😀

🔗 https://de.aliexpress.com/item/1005009475909411.html

#Geogram #Messenger #Kommunikation #Notfallkommunikation #Mesh #LoRa #WiFi #ESP32

≪ So weit, so gut ≫

Die ersten Experimente und Tests mit einem ESP32-C3 Mini verliefen erfolgreich.

#Geogram #Messenger #Kommunikation #Notfallkommunikation #Mesh #LoRa #WiFi #ESPNOW

Dass es irgendwann eine neue Mesh-Software geben würde, hatte ich ja schon länger erwartet, aber dass diese sich nach dem Start dann so schnell weiterentwickelt – ist schon großartig.  👍

#Geogram #Messenger #Kommunikation #Notfallkommunikation #Mesh #LoRa #WiFi #ESPNOW

Computing 500 Laplacian eigenfunctions on a violin with #geogram, displayed in #graphite.

Computing 500 Laplacian eigenfunctions on a violin with #geogram, displayed in #graphite.

A good crash-test for #geogram: one of the standard OpenSCAD test file, but with a level-5 Menger sponge (instead of level-3 in the original), intersected with a diagonal plane.

There are 100K facets with intersections, and some of them have several thousand intersections in the same facet.

Final mesh has 1.4M vertices and 3.8M faces,

The CSG engine and the geogram+ arithmetic kernel marketed by Tessael go brrr !!!

https://github.com/BrunoLevy/geogram

A good crash-test for #geogram: one of the standard OpenSCAD test file, but with a level-5 Menger sponge (instead of level-3 in the original), intersected with a diagonal plane.

There are 100K facets with intersections, and some of them have several thousand intersections in the same facet.

Final mesh has 1.4M vertices and 3.8M faces,

The CSG engine and the geogram+ arithmetic kernel marketed by Tessael go brrr !!!

https://github.com/BrunoLevy/geogram

#geogram 1.9.7 is out !

Geogram is a software library of geometric algorithms, it has mesh intersection, remeshing, CSG, Delaunay and Voronoi in 2D and 3D, constrained Delaunay triangulation in 2D ... and much more !

New in this version: improved compatibility with OpenSCAD.

https://github.com/BrunoLevy/geogram

#geogram 1.9.7 is out !

Geogram is a software library of geometric algorithms, it has mesh intersection, remeshing, CSG, Delaunay and Voronoi in 2D and 3D, constrained Delaunay triangulation in 2D ... and much more !

New in this version: improved compatibility with OpenSCAD.

https://github.com/BrunoLevy/geogram

Is #geogram's Constrained Delaunay Triangulation robust ?
... on the testbench !
https://github.com/BrunoLevy/geogram

Is #geogram's Constrained Delaunay Triangulation robust ?
... on the testbench !
https://github.com/BrunoLevy/geogram

WIP implementation in #geogram:
https://github.com/BrunoLevy/geogram/blob/main/src/lib/geogram/mesh/mesh_minkowski.cpp

WIP implementation in #geogram:
https://github.com/BrunoLevy/geogram/blob/main/src/lib/geogram/mesh/mesh_minkowski.cpp

Minkowski sum starts to fly in #geogram (WIP...)

Minkowski sum starts to fly in #geogram (WIP...)

#geogram + #graphite + #blender Python scripting = robust CSG directly available in Blender !
Everything is a numpy array.

#geogram + #graphite + #blender Python scripting = robust CSG directly available in Blender !
Everything is a numpy array.

Seems that some folks are taking a look at the open-source implementation in #geogram !

Seems that some folks are taking a look at the open-source implementation in #geogram !

#geogram v1.9.5 is out
(https://github.com/BrunoLevy/geogram)
- improved OpenSCAD compatibility
- some modern C++ "syntaxic sugar" for easier iteration on mesh elements
- fixed several graphic glitches on MacOS

#geogram v1.9.5 is out
(https://github.com/BrunoLevy/geogram)
- improved OpenSCAD compatibility
- some modern C++ "syntaxic sugar" for easier iteration on mesh elements
- fixed several graphic glitches on MacOS

New "EasterEgg" release of #geogram (1.9.5), the geometry processing library
https://github.com/BrunoLevy/geogram
This image:
Python-polyscope-geogram interop, more on this here:
https://github.com/BrunoLevy/pygeogram/tree/main/PyGraphite
Egg from: https://www.thingiverse.com/thing:5860339

New "EasterEgg" release of #geogram (1.9.5), the geometry processing library
https://github.com/BrunoLevy/geogram
This image:
Python-polyscope-geogram interop, more on this here:
https://github.com/BrunoLevy/pygeogram/tree/main/PyGraphite
Egg from: https://www.thingiverse.com/thing:5860339

#geogram, the geometry processing library, just reached 2K stars on github
https://github.com/BrunoLevy/geogram
It t has remeshing, reconstruction, mesh intersection, CSG, Delaunay in 2D and 3D, constrained Delaunay in 2D, Voronoi and power diagrams, semi-discrete optimal transport...

#geogram, the geometry processing library, just reached 2K stars on github
https://github.com/BrunoLevy/geogram
It t has remeshing, reconstruction, mesh intersection, CSG, Delaunay in 2D and 3D, constrained Delaunay in 2D, Voronoi and power diagrams, semi-discrete optimal transport...

New version of #geogram (v1.9.4), the geometry processing library.
Version highlights:
- support for very large .geogram files (> 4Gb) in standard mode and "GARGANTUA" mode
- improved interop with OpenSCAD
https://github.com/BrunoLevy/geogram

New version of #geogram (v1.9.4), the geometry processing library.
Version highlights:
- support for very large .geogram files (> 4Gb) in standard mode and "GARGANTUA" mode
- improved interop with OpenSCAD
https://github.com/BrunoLevy/geogram

A new release of #geogram, the geometry-processing library is out (v1.9.3).
Details here:
https://github.comBrunoLevy/geogram

A new release of #geogram, the geometry-processing library is out (v1.9.3).
Details here:
https://github.comBrunoLevy/geogram

Working on #geogram - numpy interop, new semi-discrete optimal transport demo, with matrix assembly entirely implemented in Python.
Will be part of (upcoming) python package.

Sneak peak:
https://github.com/BrunoLevy/GraphiteThree/blob/main/plugins/OGF/WarpDrive/programming_examples/Python/Transport_2d_in_python.py

Working on #geogram - numpy interop, new semi-discrete optimal transport demo, with matrix assembly entirely implemented in Python.
Will be part of (upcoming) python package.

Sneak peak:
https://github.com/BrunoLevy/GraphiteThree/blob/main/plugins/OGF/WarpDrive/programming_examples/Python/Transport_2d_in_python.py

Image credit: OpenSCAD script from advent calendar, interpreted by #geogram CSG engine:
https://github.com/openscad/openscad-advent-calendar-2023/tree/main

Image credit: OpenSCAD script from advent calendar, interpreted by #geogram CSG engine:
https://github.com/openscad/openscad-advent-calendar-2023/tree/main

For the curious, a sneak peek in the periodic parallel Delaunay triangulation, in the upstream version of #geogram:

https://github.com/BrunoLevy/geogram/blob/main/src/lib/geogram/delaunay/periodic_delaunay_3d.cpp

For the curious, a sneak peek in the periodic parallel Delaunay triangulation, in the upstream version of #geogram:

https://github.com/BrunoLevy/geogram/blob/main/src/lib/geogram/delaunay/periodic_delaunay_3d.cpp

Loading the data in #geogram / Graphite ...

Loading the data in #geogram / Graphite ...

For the curious,
a sneak peek in the upstream version of #geogram, here:
https://github.com/BrunoLevy/geogram/blob/main/src/lib/geogram/NL/nl_cuda.c
Featuring:
- sliced sparse format for very large matrices (billions NNZs)
- support for multi-GPU
- AMGCL backend

For the curious,
a sneak peek in the upstream version of #geogram, here:
https://github.com/BrunoLevy/geogram/blob/main/src/lib/geogram/NL/nl_cuda.c
Featuring:
- sliced sparse format for very large matrices (billions NNZs)
- support for multi-GPU
- AMGCL backend

Testing how #geogram's Parallel Delaunay Triangulation scales up on @grid5000
machines. These EPYC 7413 processors are amazing. Delaunay goes brrrr.
130 million points, 1 billion tetrahedra in 30 seconds.
What a time to be alive !

Testing how #geogram's Parallel Delaunay Triangulation scales up on @grid5000
machines. These EPYC 7413 processors are amazing. Delaunay goes brrrr.
130 million points, 1 billion tetrahedra in 30 seconds.
What a time to be alive !

#geogram / #polyscope integration: all Graphite commands available in Polyscope (here boolean ops).
It's easy to add your own commands in Python.
github repo and instructions up to date here:
https://github.com/BrunoLevy/pygeogram/tree/main/PyGraphite

#geogram / #polyscope integration: all Graphite commands available in Polyscope (here boolean ops).
It's easy to add your own commands in Python.
github repo and instructions up to date here:
https://github.com/BrunoLevy/pygeogram/tree/main/PyGraphite

Exploring a volume mesh of a Cebus brain (courtesy of @R3RT0
and @katjaQheuer
). #geogram + Python + @nmwsharp
's PolyScope.
Sources: https://github.com/BrunoLevy/pygeogram/tree/main/PyGraphite
Tutorial: https://github.com/BrunoLevy/GraphiteThree/wiki/python#using-polyscope

Exploring a volume mesh of a Cebus brain (courtesy of @R3RT0
and @katjaQheuer
). #geogram + Python + @nmwsharp
's PolyScope.
Sources: https://github.com/BrunoLevy/pygeogram/tree/main/PyGraphite
Tutorial: https://github.com/BrunoLevy/GraphiteThree/wiki/python#using-polyscope

Does not fit in a tweet, but not super long
(I'm still working on #geogram Python binding in Graphite, there is still a couple of things I don't like, but it is nearly converged)

PolyScope + #geogram +Python = lots of fun !

WIP: seamless integration of #geogram, Polyscope and Python
Tutorial here:
https://github.com/BrunoLevy/GraphiteThree/wiki/python

New OpenSCAD compatible CSG interpreter and viewer in #geogram, WIP.