Crowd3D is a simulation of auto-spacing as new agents enter the scene. Birds are added every 200 steps. Some parameters of the model:
Crowd aversion factor: 1.0
Wall aversion factor: 4.0
Sight distance: 5.0
Minimum force threshold: 0.75
Fish tank size: 20.0x20.0x20.0
Speed: 0.05
This example was our very first 3D app, and so it's a bit odd internally, but it's still fun to watch.