// Unmarshal and process the tracking data
private void UpdateTrackers()
{
if (Application.isEditor)
{
UpdateTrackablesEditor();
return;
}
// Unmarshal the trackable data
// Take our array of unmanaged data from native and create an array of
// TrackableData structures to work with (one per trackable, regardless
// of whether or not that trackable is visible this frame).
for (int i = 0; i < mAbsoluteNumTrackables; i++)
{
IntPtr trackablePtr = new IntPtr(mTrackablePtr.ToInt32() + i *
Marshal.SizeOf(typeof(TrackableData)));
TrackableData trackableData = (TrackableData)
Marshal.PtrToStructure(trackablePtr, typeof(TrackableData));
mTrackableDataArray[i] = trackableData;
}
// Add newly found Trackables to the queue, remove lost ones
// We keep track of the order in which Trackables become visible for the
// AUTO World Center mode. This keeps the camera from jumping around in the
// scene too much.
foreach (TrackableData trackableData in mTrackableDataArray)
{
// We found a trackable (or set of Trackables) that match this id
if ((trackableData.status == TrackableBehaviour.Status.DETECTED ||
trackableData.status ==
TrackableBehaviour.Status.TRACKED))
{
if (!mTrackableFoundQueue.Contains(trackableData.id))
{
// The trackable just became visible, add it to the queue
mTrackableFoundQueue.AddLast(trackableData.id);
}
}
else
{
if (mTrackableFoundQueue.Contains(trackableData.id))
{
// The trackable just disappeared, remove it from the queue
mTrackableFoundQueue.Remove(trackableData.id);
}
}
}
ImageTracker imageTracker = (ImageTracker)
TrackerManager.Instance.GetTracker(Tracker.Type.IMAGE_TRACKER);
MarkerTracker markerTracker = (MarkerTracker)
TrackerManager.Instance.GetTracker(Tracker.Type.MARKER_TRACKER);
// The "scene origin" is only used in world center mode auto or user.
int originTrackableID = -1;
if (mWorldCenterMode == QCARBehaviour.WorldCenterMode.USER &&
mWorldCenter != null)
{
originTrackableID = mWorldCenter.TrackableID;
}
else if (mWorldCenterMode == QCARBehaviour.WorldCenterMode.AUTO)
{
imageTracker.RemoveDisabledTrackablesFromQueue(ref mTrackableFoundQueue);
markerTracker.RemoveDisabledTrackablesFromQueue(ref mTrackableFoundQueue);
if (mTrackableFoundQueue.Count > 0)
{
originTrackableID = mTrackableFoundQueue.First.Value;
}
}
// Update the Camera pose before Trackable poses are updated.
imageTracker.UpdateCameraPose(mARCamera, mTrackableDataArray, originTrackableID);
markerTracker.UpdateCameraPose(mARCamera, mTrackableDataArray, originTrackableID);
// Update the Trackable poses.
imageTracker.UpdateTrackablePoses(mARCamera, mTrackableDataArray, originTrackableID);
markerTracker.UpdateTrackablePoses(mARCamera, mTrackableDataArray, originTrackableID);
imageTracker.UpdateVirtualButtons(mAbsoluteNumVirtualButtons, mVirtualButtonPtr);
}
