6 ms·
WebGL Fluid Experiment (2014)
- dang 6y agoDiscussed at the time: https://news.ycombinator.com/item?id=8502477 https://news.ycombinator.com/item?id=8502477 also https://news.ycombinator.com/item?id=8325700 https://news.ycombinator.com/item?id=8325700
- codetrotter 6y agoDoesn’t support iOS
- lawlessone 6y agoOr does iOS not support it?
- gen3 6y agoHere’s one that works on iOS. It also has an app. https://paveldogreat.github.io/WebGL-Fluid-Simulation/ https://paveldogreat.github.io/WebGL-Fluid-Simulation/
- LoSboccacc 6y agoall these simulators out there and still not one remake of plasma pong
- faitswulff 6y agoI truly miss this game sometimes. Is it still available anywhere?
- dspillett 6y agoThe rights owners for pong (Atari?) had it and any mirrors they could find taken down. A quick search suggests that there are downloadable copies out there. 1.3c was the latest release. Check WayBackMachine from 2007-Sep-13 (https://web.archive.org/web/20070913204145/http://www.plasmapong.com:80/ https://web.archive.org/web/20070913204145/http://www.plasma...) or older if you want more info, after that the site is an "Atari told us to take this down" message for a while and is currently held by someone else talking about other games.
- tyingq 6y agohttp://anirudhjoshi.github.io/fluid_table_tennis/ http://anirudhjoshi.github.io/fluid_table_tennis/ No good for mobile, but perhaps someone could fix that.
- exikyut 6y agoThere's a paid Android app linked from that page. You are technically correct that the [free] webpage indeed not work on mobile.
- LoSboccacc 6y agoI'm fine with non free thanks both for the links and the tips!
- utf_8x 6y agoDamn, the performance on that is really impressive.
- kipple 6y agoAt first I expected this to be some new version, but nope, it's the original. I love that this repo[0] hasn't been touched significantly in 6 years and it's still going strong. [0] https://github.com/haxiomic/GPU-Fluid-Experiments https://github.com/haxiomic/GPU-Fluid-Experiments
- soylentgraham 6y agoGiven that the original commit is clearly a giant copy&pasta from somewhere else, not surprised there is little development or changes as time goes on
- soylentgraham 6y agoOh, my bad, this the copy&pasta one https://paveldogreat.github.io/WebGL-Fluid-Simulation/ https://paveldogreat.github.io/WebGL-Fluid-Simulation/
- monkeydust 6y agoThat's the one I was thinking of, thank you.
- jchw 6y agoTrying to figure out what you are suggesting with the copy/paste stuff. I looked at the first few commits in both the PavelDoGreat repo and the haxiomic repo and see no obvious signs of copypaste. PavelDoGreat's initial commits start with initializing WebGL, seems reasonable. haxiomic's starts with a README and then a code drop, again, doesn't seem too unexpected. I also doubt one took from the other since one is Haxe and the other is JS.
- nemacol 6y agoThis is fantastic. Runs really smooth, the color and design looks wonderful. I could lose few afternoons playing with this thing. Looking forward to the app. Would be fun to manipulate the sim by moving my iPad around. Potentially fun ideas... Allow me to place shapes/blocks down and lock them in place to see how the fluid moves around them. Let me put a small 'pump' in the liquid to keep constant or pulsed movement. add a couple dials for pump speed, etc. I want to put two pumps facing one another and watch the interaction where they meet. Different pool shapes - round, star, sphere? Allow for particles to reach the edge of the pool to fall off and then let me drop new ones into flowing water. Loads of fun. Thank you!
- imvetri 6y agoha ha ha, outer space is a simulated fluid.
- designium 6y agoThat's very fun and relaxing!
- monkeydust 6y agoTherapeutic... I mean really.
- _ZeD_ 6y agoIt reminds me of http://minimal.be/lab/fluGL/index80000.html http://minimal.be/lab/fluGL/index80000.html
- blauditore 6y agoTangentially related: For a long time I've always been looking for some software for particle simulations that is free or even open source, easy to get started, and at least somewhat visual. I'm not doing anything like that professionally, just want to play around with a virtual wind tunnel for the fun of it. I'm thinking of something like Blender where I would click together a 3d mesh, "turn on" wind and see what happens. Does anyone have tips or hints? Are my expectations perhaps unrealistic? I looked into OpenFOAM before but always eventually gave up, as it seems quite heavy on headless, scripted simulation, and would need some significant run-up time.
- jpm48 6y agoSpecifically for fluid (and similar) you could have a play with mantaflow http://mantaflow.com/ http://mantaflow.com/ it's relatively easy to build (you will need Qt and Python). Houdini (free apprentice version will work for fun) is great for particle effects and this sort of stuff as well https://www.sidefx.com/ https://www.sidefx.com/
- eric_t 6y agoAssociate professor in fluid dynamics here. There is typically a split between the people who want good looking simulations for movies/games, and those who need accurate results for engineering. For engineering, you need more effort on how you resolve the complex geometry and how you model the turbulence in the flow. This adds significant complexity both for problem setup and solution time. The only product I’m aware of that is built for real-time, 3D flow design is Ansys Discovery: https://www.ansys.com/products/3d-design/ansys-discovery https://www.ansys.com/products/3d-design/ansys-discovery OpenFOAM is high quality, but as you’ve seen complex to use. There is a web-based GUI that can lighten the burden to get started somewhat: https://www.simscale.com/ https://www.simscale.com/ I think they give you ~3000 simulation hours for a trial.
- vosper 6y agoI've been trying to figure out where I should place a shelter belt on my property, as I've heard that the wind will rise up over the belt and then "dump" downwards. I don't want to position the belt so that the wind dumps on my house. I think it's essentially a fluid dynamics problem (I say this as decidedly not an engineer). I've only looked half-heartedly, but found nothing that can help me.
- inetsee 6y agoThe title seems to imply that it needs a touch screen device. It seems to work just fine on my desktop with a mouse.
- peacefulhat 6y agoiOS not supported. Ridiculous that iOS doesn’t support WebGL 2.0
- ry4nolson 6y agohttps://news.ycombinator.com/item?id=24062471 https://news.ycombinator.com/item?id=24062471
- haxiomic 6y agoHey, I feel bad for not updating this demo in 6 years! Back then it wouldn't run on iOS, today it could run with no trouble For people on iOS, here's another version with rainbow colors and multi-touch https://haxiomic.github.io/demos/rainbow-fluid/index.html https://haxiomic.github.io/demos/rainbow-fluid/index.html If you like this sort of thing and want to learn more about it I recommend checking out https://www.shadertoy.com/ https://www.shadertoy.com/ for more demos and https://thebookofshaders.com/ https://thebookofshaders.com/ for tutorials And if GPU simulations is your thing then I think you'll enjoy what these two amazing guys are doing with shaders: - https://www.shadertoy.com/user/michael0884 https://www.shadertoy.com/user/michael0884 - https://www.shadertoy.com/user/wyatt https://www.shadertoy.com/user/wyatt
- seesawtron 6y agoThis is beautiful. Can you say how this is different from [0] if at all in terms of implementation? [0] https://paveldogreat.github.io/WebGL-Fluid-Simulation/ https://paveldogreat.github.io/WebGL-Fluid-Simulation/
- haxiomic 6y agoSimilar implementation from a physics perspective – Pavel uses the same technique for simulating Navier–Stokes (Jo Stam Real-Time Fluid Dynamics for Games [0]). Pavel's has an extra step to enhance vorticity which gives you those higher detail swirls and uses a slightly different approach for input The big difference is in the rendering however, Pavel has added light shafts and bloom which are really neat effects. Additionally, he actually got round to publishing a native app which I think has been great for him! [0] https://pdfs.semanticscholar.org/847f/819a4ea14bd789aca8bc88e85e906cfc657c.pdf https://pdfs.semanticscholar.org/847f/819a4ea14bd789aca8bc88...
- nitrogen 6y agoFWIW the rainbow link gives this console error in Firefox on a Surface Book with Intel graphics: Uncaught TypeError: rgHalfFloatLinear is null I assume that means it doesn't support 16-bit float pixel formats; maybe this is something that could be detected and shown as an error message in the page? The original HN link works great, though, very cool!
- octernion 6y agoi'm constantly amazed at what can be done with webgl these day (shame about the iOS support). surprised we don't see more immersive games with this tech!
- suyash 6y agobeautifully made!
- madjam002 6y agoNice, the effect reminds me of Powder Game (https://dan-ball.jp/en/javagame/dust/ https://dan-ball.jp/en/javagame/dust/)
- otterpop 6y agoAt least give me some warning before you link to it; I'm gonna be playing it all day today :)
- ljf 6y agoMan there was some game similar to this called Sand Sand Sand, that I was totally addicted to. I showed my kid recently and he loved it too, timeless fun!
- thedrbrian 6y agoThere’s also the stand alone Powder Toy which has more powders and saves and such https://powdertoy.co.uk/ https://powdertoy.co.uk/
- snazz 6y agoAnd the modern web-based incarnation Sandspiel, which was extremely popular on HN a while ago: https://news.ycombinator.com/item?id=18696291 https://news.ycombinator.com/item?id=18696291
- hansoolo 6y agoAwesome!
- jchw 6y agoThere is also this one, and the corresponding iOS app (which I have.) It seems to run a bit faster on my phone. https://paveldogreat.github.io/WebGL-Fluid-Simulation/ https://paveldogreat.github.io/WebGL-Fluid-Simulation/
- jedimastert 6y agoThe README links to the original as a reference!
- holoduke 6y agojust out of curiousity, but how does the algorithm roughly works. does every pixel/particle position gets calculated? or is it optimized by smart grouping? is the GPU used for paralell computing? very interesting stuff to heavily optimize I guess.
- Razengan 6y agoWould be even more fun if such things (including the Powder Game) were also affected by device orientation/gyroscope/accelerometers.
- Ataraxy 6y agoVery satisfying effect.