This Flocking Simulation was created by me awhile back. I used Toxic Library and Processing.js as a coding language, an Object oriented language which is very similar to Java. I recently integrated this effect as a part of my WordPress theme, by adding controls to adjust color of the shapes and its borders. I am continuing to add more functionality to this project and will soon post the code sample on my github page. In the meantime, the code sample of the original project is available upon request.