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I was wondering if there was a way to capture the direction info from a trackball, sort of like mouse 'vector' info. Don't think that is available. The mouseWheel() event works for one dimension, but I wanted 2. I'm guessing that this would be a Java library, but I've looked and frankly being only tangentially able to use them in processing sketches, I can't figure out what library/call might return this kind of information. Would anyone know this info by any chance?
I guess the other way to approach would be to set mouse to screen center (invisible), capture any changes every 1/10th second to a vector, reset mouse position to center... rinse repeat. Seems like a lot of work for interface data that must be available on a fundamental level.