/// <summary>
/// Cannot make the assumption that a privilege is still granted after
/// returning from pause. Return the application to the state where it
/// requests privileges needed.
/// </summary>
void OnApplicationPause(bool pause)
{
if (pause)
{
MLImageTrackerStarterKit.Stop();
}
#if PLATFORM_LUMIN
else if (MLDevice.IsReady() && _imageTarget != null)
{
MLImageTrackerStarterKit.Start();
}
#endif
}
/// <summary>
/// Starts the image tracker and adds the image target to the tracking system.
/// </summary>
void Start()
{
#if PLATFORM_LUMIN
MLResult result = MLImageTrackerStarterKit.Start();
if (result.IsOk)
{
AddTarget();
}
else
{
Debug.LogErrorFormat("MLImageTrackerBehavior failed on MLImageTrackerStarterKit.Start. Reason: {0}", result);
}
#endif
}
/// <summary>
/// Adds a new image target to be tracked.
/// </summary>
private void AddTarget()
{
#if PLATFORM_LUMIN
_imageTarget = MLImageTrackerStarterKit.AddTarget(gameObject.GetInstanceID().ToString(), image, longerDimensionInSceneUnits, HandleAllTargetStatuses, isStationary);
if (_imageTarget == null)
{
Debug.LogErrorFormat("MLImageTrackerBehavior.AddTarget failed to add target {0} to the image tracker.", gameObject.name);
return;
}
_imageTarget.OnFound += (MLImageTracker.Target target, MLImageTracker.Target.Result result) => { OnTargetFound?.Invoke(target, result); };
_imageTarget.OnLost += (MLImageTracker.Target target, MLImageTracker.Target.Result result) => { OnTargetLost?.Invoke(target, result); };
_imageTarget.OnUpdated += (MLImageTracker.Target target, MLImageTracker.Target.Result result) => { OnTargetUpdated?.Invoke(target, result); };
#endif
}
/// <summary>
/// Removes the image target from the tracking system and then stops the starter kit.
/// </summary>
void OnDestroy()
{
MLImageTrackerStarterKit.RemoveTarget(gameObject.GetInstanceID().ToString());
MLImageTrackerStarterKit.Stop();
}
