A demo I made to control LED panels with live interaction using a Kinect.
All programming is done with TouchDesigner. I rendered an image of the NURBS surface and I am then sampling the values of the pixel locations that correspond to the placement of the LED panels in the 3D layout.
The pixel values that I am sampling are based upon a 16 bit Red channel floating point and the values coming in can be assigned to any parameter you want for each of the panels. So it could control 3D FX, RGB values, scaling, transforms, etc. (not just the dimming level as shown in this example)