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A Philologist on Esperanto

https://tolkiengateway.net/wiki/A_Philologist_on_Esperanto
1•psychoslave•1m ago•0 comments

Baseline Core – Open-source skill system that wires your business to AI

https://github.com/TrentM6/baseline-core
1•trentm6•1m ago•1 comments

Show HN: Owoa – Image watermarking resistant to camera capture

https://owoa.app
1•wodoshio•2m ago•0 comments

vibe-infer: Learning GPU Programming with Claude Code

https://blog.vtemian.com/post/vibe-infer/
2•vtemian•2m ago•0 comments

Why is World Uncertainty Index at an all-time high in 2026?

https://economictimes.indiatimes.com/news/international/us/why-is-global-uncertainty-at-an-all-ti...
1•rbanffy•2m ago•0 comments

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https://github.com/kimwwk/repocrunch
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The Mainframe Model of AI Is Dead

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Show HN: Recursive – AI support agents for small businesses

https://recursive.support
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Show HN: Experience-engine – reflection-based memory layer for local LLMs

https://github.com/ashishluthara/experience-engine
2•ashishluthara•6m ago•1 comments

Former Physicist Alan DeKok Helps Keep the Internet Secure

https://spectrum.ieee.org/network-security-engineer-alan-dekok
1•sohkamyung•7m ago•0 comments

Accelerating discovery in India through AI-powered science and education

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1•surprisetalk•8m ago•0 comments

Record Low Crime Rates Are Real

https://www.astralcodexten.com/p/record-low-crime-rates-are-real-not
1•simonebrunozzi•9m ago•0 comments

TypeDock – 52 free developer tools

https://typedock.vercel.app
2•elyonox•9m ago•1 comments

How Criticaster Works

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1•gghootch•11m ago•0 comments

Kagi Won. Google Lost

https://dandelion-utilitarian.com/2026/02/17/kagi-won-google-lost.html
1•speckx•12m ago•0 comments

Track AI Agent Traffic to Your Docs

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1•mooreds•12m ago•0 comments

I tracked my relationships for 6 years. New friends are negative ROI

https://twitter.com/the2ndfloorguy/status/2023377751374188903
2•LordAtlas•13m ago•0 comments

Big Tech's Claims That AI Can Help Fix the Climate Crisis Are "Greenwashing"

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1•cdrnsf•13m ago•0 comments

Tesla drops 'Autopilot' branding in California after DMV order

https://www.theregister.com/2026/02/18/tesla_drops_autopilot_marketing/
1•holdit•15m ago•0 comments

100% Autonomous "Agentic" Coding Is a Fool's Errand

https://codemanship.wordpress.com/2026/02/18/100-autonomous-agentic-coding-is-a-fools-errand/
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Conway's Arcade

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English as She Is Spoke

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HN: Alteam: AI hiring assistant(and more)

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https://nedagram.com/
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https://github.com/hash-anu/snkv
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The Sheffield supermarket going viral for the symphonic sound of its freezers

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1•CTOSian•21m ago•0 comments

A NASA Engineer Discovered a World of Semi Truck Aerodynamics by Accident

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1•PaulHoule•21m ago•0 comments

Show HN: I got frustrated with macOS transcription apps so I built my own

https://whisnap.com/speech-to-text-mac
1•Neolio•21m ago•0 comments
Open in hackernews

Implicit UVs: Real-time semi-global parameterization of implicit surfaces [pdf]

https://baptiste-genest.github.io/papers/implicit_uvs.pdf
50•ibobev•9mo ago

Comments

whizzter•9mo ago
Interesting paper for someone fiddling with implicit surfaces, but it's gonna take a little while to digest it. Also there's no examples of resulting UV maps used in this (while on-model painting is simplified, afaik classically artists still preferred to get clearly delineated maps to modify in regular painting software even if stuff like Substance painter seems to have shifted that).

Implicit surface modelling tools are still evolving quickly, and one point that seems overlooked is how this would tie with authoring tools (since this is about a fairly raw numeric algorithm solution).

Post-modelling it should hold up, but would the maps retain similarity (or enable transferability) if the implicit model structure changes?

Imagine 2 disjoint spheres in space, the user drags them together, would this algorithm want to merge the UV mapping of them if they are smoothly joined? (no sharp creases).

baptiste-genest•9mo ago
Hi, I'm the first author of the article. Thank you very much for your interest in the method!

For the 2 spheres, it's as you wish ! It depends on where you place the uv system in the CSG tree, if it is above a single sphere then it will remain on it, if it's above the union, the field should extent on both.

The main interest of the method is the fact that the output remains implicit so one can easily plug it in a CSG pipeline.

whizzter•9mo ago
Right, so in the case of the UV connecting to the 2 sphere's in the CSG if one uses a smoothunion function, would the UV islands join "from each direction" in a predictable fashion as the spheres overlap more and more?
baptiste-genest•9mo ago
If I understood what you mean, yes!

This example can be seen in the fast-forward: https://youtu.be/dK5JPHylzOg?si=zDHwaOL_xtx-_TJk

jplusequalt•9mo ago
What a great paper. This paper is an example of why I find computer graphics to be the most interesting subset of computer science.
baptiste-genest•9mo ago
Hi, I'm the first author of the paper. Thank you so much for your comment, it means the world to me!
kaoD•9mo ago
Related question: I'm coding a demo (as in "demoscene") and want to displace a plane SDF (think e.g. a heightmap) for raymarching.

This produces some visible discontinuities in the plane at larger slopes. My surface is still at f(x,y,z) = 0 but the rest of the field is completely messed up. From the little maths I know, that is no longer an SDF because among other issues, it no longer satisfies the Eikonal equation mentioned in the article.

Is there any way to fix this or am I SOL?

bhouston•9mo ago
You need to take the minimum of the two SDF fields in the surrounding region (up to the global context if you need to) if you want it to maintain an SDF. The minimum of two SDFs is always a new SDF.

My suspicion is that the new plane isn't an SDF anymore, that is why you are getting artifacts or your ray marcher has problems with large scope angles, or something.

akomtu•9mo ago
sdf(p + sin(p)*0.01)
GistNoesis•9mo ago
See "Deformations and distortions" paragraph in https://iquilezles.org/articles/distfunctions/ where it suggests playing with the ray-marching step size.
Remnant44•9mo ago
Great timing on this paper. I actually just started tackling a problem that is essentially exactly what is under discussion here (creating a coherent UV set for implicit geometry), so I'm very looking forward to reading it in depth.

At a first glace through, it seems to be written at a good blend between concept and implementation followthrough, something that notoriously is not always there for CG papers :) And it's also refreshing to read something that is not neuro-AI-generation of this or that for a change!