Posts by BrunoLevy01@fosstodon.org
(DIR) Post #AayQkpxbofTEYHeXSa by BrunoLevy01@fosstodon.org
2023-10-20T20:54:31Z
0 likes, 1 repeats
Meshing the interior of the Union of the tessellated spheres
(DIR) Post #AayQkri5JMEzyiPAXY by BrunoLevy01@fosstodon.org
2023-10-20T20:58:20Z
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-- Fibo sphere:N = 150phi = 2.618033pi = 3.14159R = 0.2for n=1,N do z = 2*n/N - 1; local r = math.sqrt(1-z*z); local theta = (2*pi)*n/phi; local x = r*math.sin(theta); local y = r*math.cos(theta); Sphere(x,y,z,R)end
(DIR) Post #Aba0LjUEpbuchqsiq8 by BrunoLevy01@fosstodon.org
2023-11-07T21:14:01Z
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#geogram CSG engine progress report: implemented import(), it does something.
(DIR) Post #Aba0LkaIkYMA6wj4vg by BrunoLevy01@fosstodon.org
2023-11-07T21:14:23Z
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... but there are still some problems (when it's too easy, it's not funny !)Probably some in/out classification errors. Will investigate that tomorrow (let's call it a day)
(DIR) Post #Aba0LlTFSGJCrMQxZg by BrunoLevy01@fosstodon.org
2023-11-07T21:49:44Z
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Oooh, this STL file is not exactly watertight, what happens if I put a tiny tolerance when loading it ?
(DIR) Post #Aba0LmEkbeJ3EgetcG by BrunoLevy01@fosstodon.org
2023-11-07T21:50:20Z
1 likes, 1 repeats
Gotcha !! Let's call it a day (for real this time)
(DIR) Post #Ac0mSjxIafXFjVIMF6 by BrunoLevy01@fosstodon.org
2023-11-20T22:09:42Z
0 likes, 1 repeats
#geogram CSG progress report:A CSG engine also needs 2D boolean operations. OpenSCAD has nice parameterized examples. This ones generates a very large number of intersections. A good stress test for the engine.
(DIR) Post #Ac0mSlxN9MmZwJLRdQ by BrunoLevy01@fosstodon.org
2023-11-20T22:10:46Z
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Fixed two bugs today, one of them especially nasty and difficult to find.Let's call it a day.
(DIR) Post #AcMQdnL6QSxbtpPhnk by BrunoLevy01@fosstodon.org
2023-12-01T09:03:22Z
0 likes, 1 repeats
1/N Mesh optimization with #geogram, the award-winning library.A cute toad from:https://sketchfab.com/ffishAsia-and-floraZia
(DIR) Post #AchuEEZCXlsoMI8SSe by BrunoLevy01@fosstodon.org
2023-12-11T16:34:23Z
0 likes, 1 repeats
That's what I want for christmas: an automatic debugging device designed in the 1900's. The suitcase cannot be closed due to a flaw in conception, but it will save you hours of debugging by indicating the line number of the bug on the 4 meters.
(DIR) Post #AcpU6g4VM0tLnrC1h2 by BrunoLevy01@fosstodon.org
2023-12-15T09:28:11Z
0 likes, 1 repeats
Resources for learning @risc_v :new repository here:https://github.com/riscv/learn
(DIR) Post #AyiJ8wWueXS7vptjoO by BrunoLevy01@fosstodon.org
2025-09-22T16:36:23Z
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Teaching processor design at Telecom Nancy Lesson 1: build your own risc-V processor at home using a FPGACourse notes are here:https://github.com/BrunoLevy/learn-fpga/blob/master/FemtoRV/TUTORIALS/FROM_BLINKER_TO_RISCV/README.md
(DIR) Post #AyiJ91azomgpdwqZN2 by BrunoLevy01@fosstodon.org
2025-09-22T16:37:36Z
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Lesson two: pipelininghttps://github.com/BrunoLevy/learn-fpga/blob/master/FemtoRV/TUTORIALS/FROM_BLINKER_TO_RISCV/PIPELINE.md
(DIR) Post #AyiJ96kOfGBFcYHeDY by BrunoLevy01@fosstodon.org
2025-09-22T16:39:18Z
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More resources on the learn-riscv github repo here:https://github.com/riscv/learn
(DIR) Post #AyiJ9BQjFoQ2907Vku by BrunoLevy01@fosstodon.org
2025-09-22T16:40:39Z
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Some short-yet-interesting programs to run on your softcore:https://github.com/BrunoLevy/TinyPrograms
(DIR) Post #AyiJ9GuKtA4Z8H0j68 by BrunoLevy01@fosstodon.org
2025-09-29T22:04:18Z
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Tomorrow at TelecomNancy, another episode, with a demonstration of FemtoRV, the minimalistic Risc-V core, and some experiments with C/C++ programming: we are going to write WRONG programs, see what happens, try to understand what happens, deduce the good habits.
(DIR) Post #AzpkytmMKH9MG4Vj04 by BrunoLevy01@fosstodon.org
2025-11-02T06:55:46Z
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@RueNahcMohr if your BASIC has integers, here is a fixed-point version:https://www.shadertoy.com/view/3ssBWr(used ShaderToy to prototype this Risc-V asm version: https://github.com/BrunoLevy/learn-fpga/blob/master/FemtoRV/FIRMWARE/ASM_EXAMPLES/mandelbrot_terminal.Swould be fun to port it to Z80 asm !)
(DIR) Post #AzpkyvbRXpbfunQ2GO by BrunoLevy01@fosstodon.org
2025-11-02T08:55:42Z
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@RueNahcMohr here it is :-)
(DIR) Post #AzpkywK6rlKs9KJhsu by BrunoLevy01@fosstodon.org
2025-11-02T08:57:50Z
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@RueNahcMohr to go even "faster", some nice tricks on this page (6502-oriented, but easy to port to Z80 I think) https://cowlark.com/2018-05-26-bogomandel/index.html
(DIR) Post #B1Hhv7xSvSKwC8DqTI by BrunoLevy01@fosstodon.org
2025-12-15T08:34:10Z
1 likes, 0 repeats
[Leaving X] .... DONEGoodbye to my 10000 followers, so long X, and thanks for the fish !My stream of computational physics news / hardware engineering / geek stuff will continue here:- https://www.linkedin.com/in/blevy/- https://fosstodon.org/@BrunoLevy01- https://bsky.app/profile/brunolevy01.bsky.social