AR Fluid Simulation Demo (opens in new tab)

(danybittel.ch)

147 pointsdanybittel6mo ago28 comments

28 comments

That's really nice. You should give it or sell it to science museum or 50 and make them really big!

Thanks! That is the plan.. I created the demo to pitch to interested people.

The Phaeno is a place I think would be perfect. They are well funded and have interest in everything remotely automotive related. Also, they like to blend the border between science and art. Make sure to add some silhouettes of modern and old cars when pitching to them.

miduil6mo ago

you could get an old microsoft surface 40 inch screen, the entire display is a video stream under linux with the sur40 kernel module.

2 more replies

Waterluvian6mo ago

That’s very cool. There’s a science museum in Sudbury Ontario that has something pretty much identical to this, albeit with slightly less cool colouring. Beside it was a sand table that projected the topography of the sand. Both were so awesome to play with. My youngest kept wanting to bring the blocks to the sand table to make buildings.

A small thought: if your hand affects the flow and it seems cool, add a small fan to simulate the blowing and see if that has a meaningful impact on the sensation of the experience.

danybittelOP6mo ago

Ha, I've thought about adding a small fan too. Definitely need to do that.

Do you have a picture of the installation at the science museum?

The color just rotates through the oklab space (change hue only).

_16mo ago

We had this at Clemson University about 10 years ago. I think the whole design came out of an MIT lab though. There's video of it still up here: https://www.clemsongis.org/clemson-sandbox

Waterluvian6mo ago

Naturally I can only find a photo of the sand table (and a cool piece of halite in the background!).

It’s at the Dynamic Earth exhibit at the Sudbury Nickel Mine. This was a few years ago.

2 more replies

andrewgleave6mo ago

Reminds me of Brett Victor's demo of projected AR turbulence around a toy car at Dynamicland. Only a short clip, but you get the idea: https://youtu.be/5Q9r-AEzRMA?t=47

danybittelOP6mo ago

I know and like Brett Victor's work. Definitely a source of inspiration!

K0balt6mo ago

Really cool. I love things like this where the human in the loop is the point.

kumarvvr6mo ago

Hi @danybittel, could you explain a bit more about the polarization filter you used to filter our the content and only let through the obstacles?

I am interested to know how it works.

Thanks.

jnovacho6mo ago

Virtually any LCD screen will produce polarized light. This is the core working principle of those screens. So if you use a polarized filter (sunglasses for example) it will completly block the image coming from the screen.

You can see the effect here: https://www.reddit.com/r/mildlyinteresting/comments/crvpil/t...

I believe this will not work with OLED screens though, but I do not have one to test this.

PxldLtd6mo ago

We use IR Floodlights + IR absorbing film + a high speed IR camera. Works great in most lighting conditions and the screen doesn't show up on the camera.

sails6mo ago

I would LOVE to have this as my physical desk top.

danybittelOP6mo ago

I would love to have this on a transparent TV.

IAmGraydon6mo ago

The polarization filter was a great idea. Solving a seemingly complex problem in a very simple way.

hannesfur6mo ago

How much computing resources does it take?

danybittelOP6mo ago

Like a regular 2D fluid sim, the projection is not the bottleneck. The sim can be slow or fast depending on the quality you want. This one runs fine on integrated graphics card on my laptop.

lloydatkinson6mo ago

Very cool! No code or anything though?

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28 comments

socalgal26mo ago

That's really nice. You should give it or sell it to science museum or 50 and make them really big!

danybittelOP6mo ago

Thanks! That is the plan.. I created the demo to pitch to interested people.

jansan6mo ago

miduil6mo ago

you could get an old microsoft surface 40 inch screen, the entire display is a video stream under linux with the sur40 kernel module.

2 more replies

Waterluvian6mo ago

A small thought: if your hand affects the flow and it seems cool, add a small fan to simulate the blowing and see if that has a meaningful impact on the sensation of the experience.

danybittelOP6mo ago

Ha, I've thought about adding a small fan too. Definitely need to do that.

Do you have a picture of the installation at the science museum?

The color just rotates through the oklab space (change hue only).

_16mo ago

We had this at Clemson University about 10 years ago. I think the whole design came out of an MIT lab though. There's video of it still up here: https://www.clemsongis.org/clemson-sandbox

Waterluvian6mo ago

Naturally I can only find a photo of the sand table (and a cool piece of halite in the background!).

It’s at the Dynamic Earth exhibit at the Sudbury Nickel Mine. This was a few years ago.

2 more replies

andrewgleave6mo ago

Reminds me of Brett Victor's demo of projected AR turbulence around a toy car at Dynamicland. Only a short clip, but you get the idea: https://youtu.be/5Q9r-AEzRMA?t=47

danybittelOP6mo ago

I know and like Brett Victor's work. Definitely a source of inspiration!

K0balt6mo ago

Really cool. I love things like this where the human in the loop is the point.

kumarvvr6mo ago

Hi @danybittel, could you explain a bit more about the polarization filter you used to filter our the content and only let through the obstacles?

I am interested to know how it works.

Thanks.

jnovacho6mo ago

You can see the effect here: https://www.reddit.com/r/mildlyinteresting/comments/crvpil/t...

I believe this will not work with OLED screens though, but I do not have one to test this.

PxldLtd6mo ago

We use IR Floodlights + IR absorbing film + a high speed IR camera. Works great in most lighting conditions and the screen doesn't show up on the camera.

sails6mo ago

I would LOVE to have this as my physical desk top.

danybittelOP6mo ago

I would love to have this on a transparent TV.

IAmGraydon6mo ago

The polarization filter was a great idea. Solving a seemingly complex problem in a very simple way.

hannesfur6mo ago

How much computing resources does it take?

danybittelOP6mo ago

Like a regular 2D fluid sim, the projection is not the bottleneck. The sim can be slow or fast depending on the quality you want. This one runs fine on integrated graphics card on my laptop.

lloydatkinson6mo ago

Very cool! No code or anything though?

j / k navigate · click thread line to collapse