pose

 Function Name  Parameter  Return  Explain
 getVelocity None vec velocity Retrieves the tracking velocity
 getAngularVelocity None vec angularVelocity Retrieves the tracking angular velocity (radians/s)
 getTrackingResult None number result Retrieves the tracking result, see Remark.
 poseIsValid None boolean Indicates whether is a valid pose
 deviceIsConnected None boolean Indicates whether device is connected

Remark:  Tracking result indicates the state of tracking device, below is result list:

    TrackingResult.Uninitialized,

    TrackingResult.Calibrating_InProgress,
    TrackingResult.Calibrating_OutOfRange,

    TrackingResult.Running_OK,
    TrackingResult.Running_OutOfRange,