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* Add velocity estimateHenrik Rydberg2011-02-161-0/+2
| | | | | | | | The per-touch velocity is useful in many contexts. This patch adds a simple estimator of the velocity, which also smooths out position jumps caused by course-grained event updates. Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
* Break out common display functionsHenrik Rydberg2011-02-161-0/+83
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>