mrdoob/three.js — pull request #2061 by jpweeks (2012-06-13 23:05:25+00:00)
Title: Interactive WebGL ParticleSystem

Made some updates to Ray.js in response to my own needs and some requests ( #911, #1264 ) for intersection support with particle systems.

1. Added method for ParticleSystem intersection with Ray
2. Updated Ray.js to match prototypical structure of other core modules.
3. Added interactive webgl particle system [example](https://dl.dropbox.com/u/4253186/three/examples/webgl_interactive_particles.html)