My concept for this assignment was to make a kitchen table that mimics the surface of water. It allows the diners and the items on the surface of the table to be equal partners in the interaction experience.
The PDF description is here and the OpenFrameworks zip file is here.
I also found an excellent Processing example of ripples, which perhaps in the next 5 years I’ll be able to translate into OpenFrameworks.
As found on the Processing.org forum
Link to the source code
Link to the .mov video example