How do you programmatically switch databases? This seems to have been answered in the past, but the solutions do not work for 2021.
public void SwitchDB(string dataSetName)
{
// TrackerManager trackerManager = (TrackerManager)TrackerManager.Instance;
ObjectTracker objectTracker = TrackerManager.Instance.GetTracker();
IEnumerable datasets = objectTracker.GetDataSets();
IEnumerable activeDataSets = objectTracker.GetActiveDataSets();
// List activeDataSetsToBeRemoved = activeDataSets.ToList();
//Loop through all the active datasets and deactivate them.
foreach (DataSet ads in activeDataSets)
{
objectTracker.DeactivateDataSet(ads);
}
foreach (TrackableBehaviour tb in itb)
{
Destroy(tb.gameObject);
}
DataSet dataSet = objectTracker.CreateDataSet();
if (dataSet.Load(dataSetName))
{
objectTracker.Stop(); // stop tracker so that we can add new dataset
if (!objectTracker.ActivateDataSet(dataSet))
{
// Note: ImageTracker cannot have more than 100 total targets activated
Debug.Log("Failed to Activate DataSet: " + dataSetName + " ");
}
if (!objectTracker.Start())
{
Debug.Log("Tracker Failed to Start. ");
}
FindITB();
}
}
// finds image targets created and
public void FindITB()
{
itb = TrackerManager.Instance.GetStateManager().GetTrackableBehaviours();
foreach (TrackableBehaviour tb in itb)
{
tb.gameObject.AddComponent();
CreatedImageTargetBehaviour citb = tb.gameObject.GetComponent();
citb.StatusFilter = CreatedImageTargetBehaviour.TrackingStatusFilter.Tracked;
tb.name = tb.TrackableName;
}
}
If there is an existing ImageTarget in the scene, it seems that the database would not be switched in the ImageTargetBehaviour. In addition, it doesn't appear to be a way to programmatically switch that database (?)
Leads to errors like
InvalidOperationException: Collection was modified; enumeration operation may not execute. System.ThrowHelper.ThrowInvalidOperationException (System.ExceptionResource resource) (at :0) System.Collections.Generic.List`1+Enumerator[T].MoveNextRare () (at :0) System.Collections.Generic.List`1+Enumerator[T].MoveNext () (at :0) CreateTargetsFromDB.SwitchDB (System.String dataSetName) (at
I am glad I have found your post, I was searching for it for my friend.