Mike, Gareth and Joe have been working on a 3D scene which will be projected up on the wall, and which will respond in real-time to the Kinect data. The environment is built and runs in VVVV.
Mike has created the particle stream (the spheres mentioned in the design which flow to / from the threshold). He found the CiantParticles patch early, because it pretty much just does what we wanted to do. CiantParticles move according to forces you specify with parameters, and they respond to other objects in the scene - in this case our Kinect skeletons.