Comments on: Genetic Algorithms: Approximating Fine Art

By: Hectic

Hectic — Sun, 05 Apr 2009 15:47:55 +0000

just continue doin good and you will know the result

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By: Chris

Chris — Wed, 31 Dec 2008 10:36:55 +0000

Yeah, fairly normal. Speed is really a function of the population size, so if you want a faster iteration time then decrease that number. You run greater risk of hitting local minima if you do that though, although the ‘nuke’ option added later does help mitigate that.

By: CJ

CJ — Wed, 31 Dec 2008 04:08:49 +0000

I got it running on Ubuntu, though I had to use Synaptic to grab the ruby-opengl and rmagick packages first. I then did the gem install, just to be sure.

I left it to run for about 10 minutes, and it only got through about 700 generations on a 276×429 jpeg. Is that normal?

By: Chris

Chris — Wed, 17 Dec 2008 10:11:46 +0000

I’ve now replaced the image with a better one, only using triangles!

For some reason, the more constrained the sizes and opacity of the polygons are, the better the result. One side of a triangle can be max 25% of the screen, and they can be max 10% opacity. I guess better results come from the group rather than one triangle coming to dominate the image.

By: Gavin

Gavin — Mon, 15 Dec 2008 09:50:04 +0000

Works on Windows too – you need to install the rmagick-win32 gem manually (see http://rmagick.rubyforge.org/install-faq.html#win) and run the ImageMagick installer which is bundled with the rmagick-win32 gem.

By: Aaron H.

Aaron H. — Thu, 11 Dec 2008 17:28:42 +0000

Very odd. Did the same thing here but it didn’t like it. Using OSX here. I wonder if it’s a platform thing.

Either way, it’s a great start. I’m having fun working on improving it.

By: Aimee

Aimee — Thu, 11 Dec 2008 09:29:01 +0000

The ruby-opengl gem works for me.

By: Chris

Chris — Thu, 11 Dec 2008 08:59:41 +0000

That’s weird – I just did a simple gem install ruby-opengl…

Thanks for looking – feel free to submit patches!

By: Aaron H.

Aaron H. — Thu, 11 Dec 2008 08:44:00 +0000

This is awesome. You totally saved me from having to do it myself. :)

I’m curious about the opengl you require. On my system, I had to include gl and glut (from ruby-opengl) and then change all of the Gl and Glut methods and constants to their class versions. It was all very easy, but I’m wondering what you’re using.