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multiscale turing patterns

Started by Triple Zero, July 31, 2011, 05:57:55 PM

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Triple Zero

July 31, 2011, 05:57:55 PM
some kind of not-quite-fractal reaction-diffusion pattern I came across last week, it looked awesome and I just had to write code to reproduce it :)

explained here:
http://www.jonathanmccabe.com/Cyclic_Symmetric_Multi-Scale_Turing_Patterns.pdf
http://softologyblog.wordpress.com/2011/07/05/multi-scale-turing-patterns/

but you probably just want to gaze upon the eye candy I produced and uploaded to vimeo. The main improvements on the algorithms described above is that I tried to add some colours to the mix (the originals are in greyscale only):

http://vimeo.com/27055590 -- first attempt at colour, not very good, looks like rainbow puke :)

improving further, the next ones are much better:

http://vimeo.com/27083238 -- purple/yellow
http://vimeo.com/27090684 -- greens
http://vimeo.com/27109742 -- red-orange/blue

I wrote the code to produce these videos in Python using Numpy and Scipy. A friend of mine added Weave/Blitz to the mix, which lets you write performance-critical bits in C++ (as strings in Python! compiling on the fly!) but I haven't incorporated it yet. Should bring down the rendering time from a few hours to 30 mins or so, I hope.
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Triple Zero

#1
August 02, 2011, 12:07:06 AM
really big awesome rendering:



click the image for its full 1600x900 desktop background sized glory :)
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Triple Zero

#2
August 02, 2011, 12:07:38 AM
also, click the vimeo links, damnit! see how it looks when it's MOVING :D
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Luna

#3
August 02, 2011, 12:12:02 AM
Oh, neat...
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I like the Luna one. She is a good one.

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#4
August 02, 2011, 12:22:31 AM
That's awesome...like a weather map and a 60's light show all mixed up.
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Telarus

#5
August 02, 2011, 12:59:08 AM
Very cool. Can you make it Tileable?
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Triple Zero

#6
August 02, 2011, 02:05:48 AM
Quote from: Telarus on August 02, 2011, 12:59:08 AM
Very cool. Can you make it Tileable?

It's already tileable.

The whole algorithm runs with periodical boundary conditions.

You want tiles at different sizes? Just ask :)

I even made a tweak to make it tileable in time, so you can loop it forever, I'll post tomorrow.
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Cramulus

#7
August 02, 2011, 09:31:09 PM
WALLPAPER'D

Telarus

#8
August 03, 2011, 03:10:34 AM
Bad ass. I'd love tiles in the stock power of 2 sizes (256, 512, 1024)... the time-loop would be amazing too. I could do some nifty things in the UDK with that.
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Triple Zero

#9
August 03, 2011, 05:25:01 PM
sure thing I'll set my comp to generate a whole bunch of random 512x512 ones tonight when I'm away.

the timeloop thing I only so far made to create this avatar GIF loop:

which I haven't used yet cause I see only robots anyway :)
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Triple Zero

#10
August 04, 2011, 12:11:28 PM
WELL IF THAT DOESNT POOP BLAST TURDLETS THROUGH MY SHITNOZZLE.

... I can't get my avatar to upload and stay animated :( I think it only works if I would have made it exactly 105x105.
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Triple Zero

#11
August 04, 2011, 01:59:18 PM
For your texturing enjoyment:

http://devio.us/~tripzilch/mstp512/

click on the thumbs for the full 512p size.

the code on the right are the parameters and colours used for rendering, I could for instance re-run the simulation in other resolutions, it would give roughly the same sort of patterns except the blobs would always be in other random positions.

I set the randomization of the parameters quite high, I'd rather have a lot of variation with a few "bad ones", than most of the stuff looking the same. I did try to restrict the colour schemes to be mostly harmonious, though. Which mostly worked.

currently re-rendering img32 at 1536x900 desktop size, and later probably some other choice "good ones".
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Cramulus

#12
August 04, 2011, 03:00:53 PM
these are really cool! very "biomorph"

I'm finding that they make for very noisy desktop wallpapers though. all the bright colors make it hard to see the icons/text...

Right now I'm using this one, which I think has the most muted colors





Triple Zero

#13
August 04, 2011, 03:58:51 PM
Quote from: Cramulus on August 04, 2011, 03:00:53 PM
these are really cool! very "biomorph"

I'm finding that they make for very noisy desktop wallpapers though. all the bright colors make it hard to see the icons/text...

Hmm good point. You might try to open them in GIMP and adjusting the colour Curves a littlebit to mute the colours somewhat to your liking.

Possibly even do filter>map>tile to tile it to desktop size, add an extra layer and overlay a semi-transparent gradient over it so if most of your icons are on the left, the colours are darker/muted there, but shade to more vibrancy on the right, or something (it's a trick I sometimes use when a desktop image isn't quite suitable).

My (Ubuntu) desktop doesn't really have icons on it, it's just a pic that sometimes shows through when I don't happen to have any windows open :)

So, this one in large size just finished. It's probably also too vibrant, sorry bout that:
http://img21.imageshack.us/img21/1075/niice.jpg
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Triple Zero

#14
August 04, 2011, 06:06:41 PM
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