// Initialize the container for retrieving tracking data from native
private void InitializeTrackableContainer()
{
// Destroy if the container has been allocated.
Marshal.FreeHGlobal(mTrackablePtr);
mAbsoluteNumTrackables = 0;
ImageTracker imageTracker = (ImageTracker)TrackerManager.Instance.GetTracker(
Tracker.Type.IMAGE_TRACKER);
MarkerTracker markerTracker = (MarkerTracker)TrackerManager.Instance.GetTracker(
Tracker.Type.MARKER_TRACKER);
if (imageTracker != null)
{
DataSet activeDataSet = imageTracker.GetActiveDataSet();
if (activeDataSet != null)
{
mAbsoluteNumTrackables += activeDataSet.GetNumTrackables();
}
}
if (markerTracker != null)
{
mAbsoluteNumTrackables += markerTracker.GetNumMarkers();
}
if (mAbsoluteNumTrackables > 0)
{
mTrackablePtr = Marshal.AllocHGlobal(Marshal.SizeOf(
typeof(TrackableData)) * mAbsoluteNumTrackables);
}
else
{
mTrackablePtr = IntPtr.Zero;
}
mTrackableDataArray = new TrackableData[mAbsoluteNumTrackables];
if (!Application.isEditor)
{
Debug.Log("Absolute number of Trackables: " + mAbsoluteNumTrackables);
}
}
