David Crooks

Studious artist and bohemian scientist.

Art • Code • Maths • Physics

iSymmetry Pattern Design App

[David Crooks @David_Crooks]

I'm having trouble with Liquid Glass. My toolbar items are randomly flipping from light to dark, on a constant black background. The popover is also randomly light or unreadably dark. Is there some way to make it prefer the light mode? #swiftUI #ios26 #liquidglass

[David Crooks @David_Crooks]

https://t.co/TaRKFngGzH

[David Crooks @David_Crooks]

Just launched my new app: Stop Motion Magic

Stop Motion Magic makes it super easy to stop motion movies with your iPhone camera. It's got tons of powerful features too - onion skin, motions guides, rotoscoping, sound effects and much more!

[David Crooks @David_Crooks]

@alpennec rather than use move, use something like .transition(.offset(x:0,y: 120)) and you can control how far it goes

[David Crooks @David_Crooks]

@Brehove @getjonwithit @algekalipso I don't think the ancient greeks and romans studied knots. But it's riffing off Platos idea that the 5 elements are related to the 5 platonic solids, and Lucretius was big the idea of atoms.

[Benjamin Wolba @benjaminwolba]

As Moore's law runs out of steam and machine learning heats up, the race is on to find new ways to compute—and thermodynamic computing is a hot new contender.

Unlike traditional microprocessors, which rely on binary logic and electrical circuits to process information, thermodynamic computing leverages the natural tendency of physical systems to minimize energy and reach equilibrium states for computing.

I had the pleasure of speaking with @GavinCrooks, research scientist at @NormalComputing, about how they built a prototype thermodynamic computer to solve linear algebra problems faster and more efficiently and pave the way to probabilistic machine learning beyond transformer models:

https://t.co/vDJHO70Pwm

[David Crooks @David_Crooks]

@robkroese I think the thing you don't understand is the tabloid press. A Brit would read this as "It's going to pleasantly warm for the next couple of days".

[David Crooks @David_Crooks]

@MattHeaney23 Knot Explorer https://t.co/tGEw0UVd3j

[David Crooks @David_Crooks]

@drewolbrich @mmmtmax They are always rescheduling the apocalypse, it's hard to keep up.

[David Crooks @David_Crooks]

This was rejected by Apple App Store review. So it's not going in the store any time soon. Seems they don't appreciate art!

[David Crooks @David_Crooks]

My next Vision OS app places an All Seeing Celestial Being in the shared space.

[David Crooks @David_Crooks]

@drewolbrich @mmmtmax Very mysterious. And ominous. Is The Rapture scheduled for 2028, perhaps?

[David Crooks @David_Crooks]

@mmmtmax No, it doesn't really do anything, it just looks around. So it is, to be fair, not very useful.

[David Crooks @David_Crooks]

@mmmtmax "We found that the usefulness of your app is limited by the minimal amount of content or features it includes."

[David Crooks @David_Crooks]

hmm, those came out in the wrong order somehow 🤷‍♂️

[David Crooks @David_Crooks]

For today's RealityKit experiment I'm using the new LowLevelTexture to run a fluid simulation on the surface of a pinched torus: 1/5

[David Crooks @David_Crooks]

5/5 I have a bunch of particles swimming around dropping "ink", which swirls in my evolving flow field. Also, I'm using LowLevelMesh to give the surface a gentle undulation.

[David Crooks @David_Crooks]

4/5 If you know a bit of vector calculus, the trick is fairly simple: A vector field that "flows" like a fluid is divergence free. But Div Curl F = 0, so we can get a divergence free field by taking the curl of anything. We just take the curl of noise and we're done.

[David Crooks @David_Crooks]

3/5 For the fluid I'm flip flopping between two textures with a metal compute shader. But fluid simulations are notoriously difficult and expensive - so I cheat!

[David Crooks @David_Crooks]

2/5 I'm just using a standard Physically Based Material, but I'm updating the roughness texture with my fluid sim using the LowLevelTexture.

https://t.co/vEH68cM5qz

[Abraham Garcia - Workhorse @thehonestape]

@algekalipso