protected override void OnUpdate()
{
// Save the current pose for the current time.
_eyeTrackerOriginPoses.Add(_eyeTrackerOrigin.GetPose(EyeTrackingOperations.GetSystemTimeStamp()));
base.OnUpdate();
}
protected override void OnUpdate()
{
#if !USE_OPENVR_BINDINGS
// Save the current pose for the current time adding estimated pose prediction time offset.
_eyeTrackerOriginPoses.Add(_eyeTrackerOrigin.GetPose(EyeTrackingOperations.GetSystemTimeStamp() + Mathf.RoundToInt(_hmdPosePredictionOffset * 1000f)));
#endif
base.OnUpdate();
}
private void Update()
{
// Save the current pose for the current time.
_eyeTrackerOriginPoses.Add(_eyeTrackerOrigin.GetPose(EyeTrackingOperations.GetSystemTimeStamp()));
// Check for state transitions to or from subscribing.
UpdateSubscriptions();
if (_subscribeToGaze)
{
ProcessGazeEvents();
}
}
protected override void ProcessGazeEvents()
{
const int maxIterations = 20;
var gazeData = _latestGazeData;
for (int i = 0; i < maxIterations; i++)
{
var originalGaze = _originalGazeData.Next;
// Queue empty
if (originalGaze == null)
{
break;
}
#if USE_OPENVR_BINDINGS
var now = EyeTrackingOperations.GetSystemTimeStamp();
var backInTime = (originalGaze.SystemTimeStamp - now) / 1000000.0f;
// Look up OpenVR pose back when the eyetracker looked at the eyes.
OpenVR.System.GetDeviceToAbsoluteTrackingPose(OpenVR.Compositor.GetTrackingSpace(), backInTime, poseArray);
if (!poseArray[OpenVR.k_unTrackedDeviceIndex_Hmd].bPoseIsValid)
{
Debug.Log("Failed to get historical pose");
continue;
}
var bestMatchingPose = HMDPoseToETPose(poseArray[OpenVR.k_unTrackedDeviceIndex_Hmd].mDeviceToAbsoluteTracking, now);
#else
var bestMatchingPose = _eyeTrackerOriginPoses.GetBestMatchingPose(originalGaze.SystemTimeStamp);
if (!bestMatchingPose.Valid)
{
Debug.Log("Did not find a matching pose");
continue;
}
#endif
gazeData = new VRGazeData(originalGaze, bestMatchingPose);
_gazeDataQueue.Next = gazeData;
}
var queueCount = UnprocessedGazeDataCount;
if (queueCount > 0)
{
Debug.LogWarning("We didn't manage to empty the queue: " + queueCount + " items left...");
}
_latestGazeData = gazeData;
}