Cache averages in PointerTracker #2212
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Description
This PR adds caching average coordinates in
PointerTracker. Some handlers (likepan) send average values in native event. The problem is, that these events are being sent after pointers are removed from tracker. This means, that tracker may return NaN as averege, when received event waspointerup. In that case, cached value should be returned.Test plan
Tested on example app