Note: I'm told there's a few bugs in these, so use at your own risk :)
The Geometric Objects provide a solution for doing animation along a path of a geometric shape. They could be used in demos and games if need be. They are built as add-on objects to the DynLayer. For example, any DynLayer that you have can also have a geometric object added on to it.
Here are the objects so far, I will be adding a few more shortly: