This project implements a particle system physics engine in Pharo.
The initial source of inspiration was Traer.physics engine for processing (http://murderandcreate.com/physics/).
However, this is not a straight port... There are a number of points where this project diverges.
A very simple viewer was built using Roassal visualization framework (http://objectprofile.com/roassal-home.html), so even though the core does not depend on Roassal, having it makes the examples a lot more fun.
For the future ... we will see how it goes. For now I did it just to play a little bit with Roassal