Marek Vana

Proud dad of 3 | Dev with a taste for chocolate || Chocolatier with a drive for coding. Pushing the limits of real-time physics & simulations in Three.js

[Marek Vana @derfcz]

@MatthewBerman I’m down to test. 🤞 Thank you

[Marek Vana @derfcz]

@PromptRiot @threejs Thanks! And nice work building your own in the meantime!😄 I bet you know that feeling when it finally starts looking good and behaving more or less physically correctly too. Open-source Duckee lab v0.1 is coming this November!

[Marek Vana @derfcz]

From diorama to an endless desert.
My open-source @threejs sand lab is scaling up: granular flow, deformable terrain, and volumetric dust, all while targeting 60 FPS.

Spatial partitioning, adaptive LOD, and some clever hacks...
The real challenge starts now!

#threejs #WebGL

[Marek Vana @derfcz]

@theshanergy @threejs Thank you!😊

[Marek Vana @derfcz]

@Spectromachina @threejs Thanks for your interest! 😊 I’m planning to release v0.1 as open source this November, and I’ll share the repo link as soon as it’s ready!

[Marek Vana @derfcz]

@tkapler Vy nás teda zásobujete pane Karfík 😁 Dobrá práce Tome, jednou se něco bude hodit 👍

[Marek Vana @derfcz]

@DavidBSmit @threejs The worst (and also the best🤩) thing about life these days is trying to stay focused and stick to a direction. So many possibilities, so little time 😁

[Marek Vana @derfcz]

Because chocolate is a Casson fluid with yield stress, it locks in the texture of every stroke instead of leveling flat. Tapped into fat crystallization kinetics so it solidifies without losing volume.
Real-time compute shaders, zero keyframes.
@threejs #threejs #gamedev

[Marek Vana @derfcz]

@DavidBSmit @threejs Thanks for the idea! Modelling clay turned out to be a real challenge 🟢 My liquid solver isn't ready for it yet. First I'll finish and ship v0.1, then I'll dive in. Still so much ahead: smoke, fire and a thousand more surprises :)

[Marek Vana @derfcz]

@LuisBizarro Really great work! Is the Opus 5.5 version online too? I’d love to check it out.

[Marek Vana @derfcz]

The solver has reached a level of physical accuracy where even new scenarios, like rain suggested by @CMON1975DOTCOM, just work out of the box. No extra calibration needed. And that's what excites me the most! #threejs

[Marek Vana @derfcz]

@AbdulGafir63276 @threejs I’m also using it myself to create profiles for the next Duckee update, so it’s being built around real use cases too. Thanks for the support!

[Marek Vana @derfcz]

@AbdulGafir63276 @threejs Yes, that’s the plan! 🤩 I’ve committed to releasing v0.1 this November. I want it to be useful right out of the box, not just a tech demo. A well-documented API is a big part of that, so everyone can build whatever they have in mind.

[Marek Vana @derfcz]

@trybitgrain @dangreenheck Thanks! There’s a whole little world at that scale🕵️

[Marek Vana @derfcz]

While @dangreenheck has the >1L water physics mastered with Three.js Water Pro👏, I went to the opposite extreme: sub-milliliter scales and non-Newtonian thin films. Real-time implicit thin-film solver running on GPU.
#threejs #webgpu #shaders #gamedev #creativecoding

[Marek Vana @derfcz]

@gol_tiro I just shared a time-lapse of the whole drying process here: https://t.co/bqU8gcIpZi

[Marek Vana @derfcz]

Blood drying on a white surface (GPU time-lapsed)
As water evaporates, volume drops from 318 → 64 µL, leaving behind the 20% solid fraction. Oxidation hits 41% after 5h simulated time.
All driven by coupled transport, evaporation kinetics, and dynamic drying rheology.
@threejs

[Marek Vana @derfcz]

@park_ppuri @dangreenheck Yep! Running directly in WebGPU/Three.js. Took a lot of tuning to prevent the solver from blowing up, but totally worth it.

[Marek Vana @derfcz]

@renshiasada @dangreenheck Thanks! Explicit solvers exploded way too easily with this viscosity and surface tension step, implicit was the only way to keep it stable at 60 FPS.

[Marek Vana @derfcz]

Blood drying on a white surface (GPU time-lapsed)
As water evaporates, volume drops from 318 → 64 µL, leaving behind the 20% solid fraction. Oxidation hits 41% after 5h simulated time.
All driven by coupled transport, evaporation kinetics, and dynamic drying rheology.
@threejs

[Marek Vana @derfcz]

@gol_tiro Yes! The simulator already includes physically based drying and evaporation, so the fluid volume isn't fixed. I'll demonstrate this in my next showcase.