On Mon, 2004-06-14 at 12:20, Lance Blisters wrote: > On Thu, Jun 10, 2004 at 08:42:42PM -0400, Dave Robillard wrote: > > Speaking of touchpads, does anyone know of a (usb) touchpad that works > > with your finger, not just a pen? (The only ones I've seen just work > > with the stylus, which is no good) > > > > I want to get one and set it up as a MIDI controller, like a poor mans > > Kaoss Pad (and what I think would be the ultimate expressive MIDI > > controller). > > > > Surely one of these things must exist? > > Most (all?) by default work only in relative motion mode, > not absolute motion mode. So moving your finger a bit to the left > sends -5 -7 -2 but you have no idea of where on the pad your > finger is. In fact, the relative events don't even add up; move > back and forth a from side to side a dozen times, the values tend > do drift in some direction (the direct USB events, pre-mouse > accelleration) So, it doesn't map onto the kaoss pad very well. > I have an "easy-cat" usb touchpad. IIRC it has an absolute mode > under windows, but i've seen no linux code to enable it. They > wanted me to sign an NDA for futher info. However, this device > is still usable for x-y parameter control, just only via relative > motions. There are some binding files to support this device in > GDAM's CVS repository. > > -geoff
Now that I think of it, with a small touchpad, relative would be okay anyway. Not accurate enough for absolute to be that useful. Absolute would be better, for sure, but relative would be okay - I personally just want to be able to drag my finger around and manipulate things in an expressive way. -DR-
