[HN Gopher] Show HN: Play with Shaders Inspired by Slime Mold
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Show HN: Play with Shaders Inspired by Slime Mold
Author : Yenrabbit
Score : 62 points
Date : 2021-03-29 10:55 UTC (1 days ago)
(HTM) web link (observablehq.com)
(TXT) w3m dump (observablehq.com)
| coldcode wrote:
| Does not seem to work in Safari on Big Sur, all I see is js
| errors where the animations should be.
| selfsimilar wrote:
| Same in Safari in iOS.
|
| `viewof gl = TypeError: null is not an object (evaluating
| 'gl.viewport')`
| nigerian1981 wrote:
| I tried turning on WebGL and WebGPU in the Safari settings,
| but it just shows a black box on my iPhone 11
| pineconewarrior wrote:
| Safari is a bit behind on javascript and animations. I'm
| excited for the current Safari preview to become mainstream.
| SketchySeaBeast wrote:
| Doesn't work in Firefox either, including the dev edition which
| is usually more up to date:
|
| "viewof gl = TypeError: can't access property "viewport", gl is
| null"
|
| It does work in the new Edge and Chrome. Doesn't load at all in
| IE, but I take that as a good thing.
| burkaman wrote:
| No problem for me in Firefox Nightly 89.0a1.
| SketchySeaBeast wrote:
| Hmmm... my work laptop can't run it with Firefox (regular,
| dev edition, or nightly), but my home PC can on regular
| Firefox. And it does run on my work laptop in Chrome.
| Curious.
| theossuary wrote:
| This reminds me of a coding adventure YT video that replicates
| slime molds in Unity, look at the end to see some high res videos
| of it - https://youtu.be/X-iSQQgOd1A
| arnado wrote:
| The article credits that video directly for inspiration.
| theossuary wrote:
| Whoops, didn't see that. I thought it was a little peculiar
| that there were two things about simulating mold in a week in
| my feeds; but I just chalked it up to frequency bias. Now I'm
| wondering if all the 3d printed cycloidal drive stuff I've
| been seeing is more than just coincidence...
| Yenrabbit wrote:
| I wonder if previous 'Coding Adventures' videos have
| prompted similar 'coincidences' with people wondering why
| they are suddenly seeing procedural planets popping up all
| over the place :)
| jedimastert wrote:
| Coding Aventure is one of my favorite intellectual(?)
| exploration channels, along with Primer, who's had a great
| string of genetic/evolution simulation videos exploring the
| emergent evolution of society
|
| https://www.youtube.com/watch?v=goePYJ74Ydg
| marshmallow_12 wrote:
| here's something else interesting about slime mould
| https://www.nationalgeographic.com/science/article/slime-mou...
| arc-in-space wrote:
| I'm guessing there's no collisions from the original paper in
| this implementation?
|
| Edit: also, are boundaries being blurred properly with wrapping
| enabled? It seems to create rectangular patterns(it could just be
| because of the initial conditions though).
| Yenrabbit wrote:
| I'll be honest I found the paper AFTER finishing the project -
| my implementation was based on the rough description in the
| video :) Collisions would be very hard to implement, but I will
| definitely take a look at the blurring - at the moment it
| doesn't wrap around.
| spuz wrote:
| This is super interesting. I've actually been looking for a way
| to render 100,000s of points in an animation similar to these so
| I will definitely take a look at using shaders now.
| Yenrabbit wrote:
| Great - good luck!
| galangalalgol wrote:
| In green slime I saw a central ring that seemed to be reinforcing
| itself. It stayed circular for ages. And then equidistant
| parallel lines along each side.
| Yenrabbit wrote:
| Author here, happy to answer any questions about the
| implementation. I'd also love to see any interesting patterns you
| find :)
| natemcintosh wrote:
| Like you, I also loved Sebastian Lague's video on slime mold.
| Would you suggest starting on a CPU based version if I have no
| knowledge of shaders?
| mindv0rtex wrote:
| That's what I did when I recently came across the same model.
| Here's my CPU-based implementation (in Rust):
| https://github.com/mindv0rtex/physarum
| Yenrabbit wrote:
| You can get some fun patterns even at much smaller scale, so
| a CPU-based approach should be entertaining enough. That
| said, I had no knowledge of shaders either before this
| project! I'm johnowhitaker on twitter or email - happy to
| chat if you want to talk specifics.
| mushishi wrote:
| Somewhat related, here's an interesting video about the behavior
| of Slime Mold:
|
| Nova - Se47 - Ep10 - Secret Mind of Slime
| https://www.dailymotion.com/video/x7z6ycz
|
| (Someone shared it here on another post.)
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