TOYVision
Toolkit for the easy prototyping of hybrid games for Tabletop Devices
... by the player) and active (carried out by the computer through the Arduino microcontroller)
Any programming language can be used to develop games with toyvision, provided by implementing a TCP-IP socket.
Moreover, Proccesing API and finished samples are already provided in this project.
ToyVision is based on the Reactivision framework.
More info: www.toyvision.org