Use existence of last_updated instead of _last_pose to judge first tracking transition.\n_last_pose is updated every time a new pose comes in, but last_updated is only made if tracking.
Use existence of last_updated instead of _last_pose to judge first tracking transition.\n_last_pose is updated every time a new pose comes in, but last_updated is only made if tracking.

masasin/spirit,masasin/spirit