/// <summary>
/// Enable this search result for tracking
///
/// Creates an ImageTarget for local detection and tracking of this target.
/// If the given game object has no ImageTargetBehaviour, a new one will be created.
/// Note that this call may result in an earlier ImageTarget that was enabled for
/// tracking to be destroyed, including its ImageTargetBehaviour.
/// Thus it is not advised to hold a pointer to an
/// ealier created ImageTarget after calling enableTracking again. Returns
/// NULL if the target failed to be enabled for tracking.
/// </summary>
public override ImageTargetBehaviour EnableTracking(TargetSearchResult result, GameObject gameObject)
{
// create a new trackable in native
IntPtr imageTargetPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(ImageTargetData)));
int newTrackableCount = QCARWrapper.Instance.TargetFinderEnableTracking(result.TargetSearchResultPtr, imageTargetPtr);
ImageTargetData imageTargetData = (ImageTargetData)
Marshal.PtrToStructure(imageTargetPtr, typeof(ImageTargetData));
Marshal.FreeHGlobal(imageTargetPtr);
StateManagerImpl stateManager = (StateManagerImpl)TrackerManager.Instance.GetStateManager();
// if successful, create a new trackable here and add it to internal collection
ImageTargetBehaviour imageTargetBehaviour = null;
if (imageTargetData.id == -1)
{
Debug.LogError("TargetSearchResult " + result.TargetName + " could not be enabled for tracking.");
}
else
{
ImageTarget newImageTarget = new CloudRecoImageTargetImpl(result.TargetName, imageTargetData.id, imageTargetData.size);
// Add newly created Image Target to dictionary.
mImageTargets[imageTargetData.id] = newImageTarget;
// Find or create ImageTargetBehaviour for this ImageTarget:
imageTargetBehaviour = stateManager.FindOrCreateImageTargetBehaviourForTrackable(newImageTarget, gameObject);
}
// get a list of currently existing trackables
IntPtr imageTargetIdArrayPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(int)) * newTrackableCount);
QCARWrapper.Instance.TargetFinderGetImageTargets(imageTargetIdArrayPtr, newTrackableCount);
List <int> targetIds = new List <int>();
for (int i = 0; i < newTrackableCount; i++)
{
IntPtr targetIdPtr = new IntPtr(imageTargetIdArrayPtr.ToInt32() + i * Marshal.SizeOf(typeof(int)));
int targetID = Marshal.ReadInt32(targetIdPtr);
targetIds.Add(targetID);
}
Marshal.FreeHGlobal(imageTargetIdArrayPtr);
// delete those targets that no longer exist
foreach (ImageTarget imageTarget in mImageTargets.Values.ToArray())
{
if (!targetIds.Contains(imageTarget.ID))
{
stateManager.DestroyTrackableBehavioursForTrackable(imageTarget);
mImageTargets.Remove(imageTarget.ID);
}
}
return(imageTargetBehaviour);
}
public override ImageTargetAbstractBehaviour EnableTracking(TargetFinder.TargetSearchResult result, GameObject gameObject)
{
IntPtr trackableData = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(ImageTargetData)));
int trackableIdArrayLength = QCARWrapper.Instance.TargetFinderEnableTracking(result.TargetSearchResultPtr, trackableData);
ImageTargetData data = (ImageTargetData)Marshal.PtrToStructure(trackableData, typeof(ImageTargetData));
Marshal.FreeHGlobal(trackableData);
StateManagerImpl stateManager = (StateManagerImpl)TrackerManager.Instance.GetStateManager();
ImageTargetAbstractBehaviour behaviour = null;
if (data.id == -1)
{
Debug.LogError("TargetSearchResult " + result.TargetName + " could not be enabled for tracking.");
}
else
{
ImageTarget trackable = new CloudRecoImageTargetImpl(result.TargetName, data.id, data.size);
this.mImageTargets[data.id] = trackable;
behaviour = stateManager.FindOrCreateImageTargetBehaviourForTrackable(trackable, gameObject);
}
IntPtr trackableIdArray = Marshal.AllocHGlobal((int)(Marshal.SizeOf(typeof(int)) * trackableIdArrayLength));
QCARWrapper.Instance.TargetFinderGetImageTargets(trackableIdArray, trackableIdArrayLength);
List <int> list = new List <int>();
for (int i = 0; i < trackableIdArrayLength; i++)
{
IntPtr ptr = new IntPtr(trackableIdArray.ToInt32() + (i * Marshal.SizeOf(typeof(int))));
int item = Marshal.ReadInt32(ptr);
list.Add(item);
}
Marshal.FreeHGlobal(trackableIdArray);
foreach (ImageTarget target2 in this.mImageTargets.Values.ToArray <ImageTarget>())
{
if (!list.Contains(target2.ID))
{
stateManager.DestroyTrackableBehavioursForTrackable(target2, true);
this.mImageTargets.Remove(target2.ID);
}
}
return(behaviour);
}
/// <summary>
/// Enable this search result for tracking
///
/// Creates an ImageTarget for local detection and tracking of this target.
/// If the given game object has no ImageTargetBehaviour, a new one will be created.
/// Note that this call may result in an earlier ImageTarget that was enabled for
/// tracking to be destroyed, including its ImageTargetBehaviour.
/// Thus it is not advised to hold a pointer to an
/// ealier created ImageTarget after calling enableTracking again. Returns
/// NULL if the target failed to be enabled for tracking.
/// </summary>
public override ImageTargetBehaviour EnableTracking(TargetSearchResult result, GameObject gameObject)
{
// create a new trackable in native
IntPtr imageTargetPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(ImageTargetData)));
int newTrackableCount = QCARWrapper.Instance.TargetFinderEnableTracking(result.TargetSearchResultPtr, imageTargetPtr);
ImageTargetData imageTargetData = (ImageTargetData)
Marshal.PtrToStructure(imageTargetPtr, typeof(ImageTargetData));
Marshal.FreeHGlobal(imageTargetPtr);
StateManagerImpl stateManager = (StateManagerImpl)TrackerManager.Instance.GetStateManager();
// if successful, create a new trackable here and add it to internal collection
ImageTargetBehaviour imageTargetBehaviour = null;
if (imageTargetData.id == -1)
{
Debug.LogError("TargetSearchResult " + result.TargetName + " could not be enabled for tracking.");
}
else
{
ImageTarget newImageTarget = new CloudRecoImageTargetImpl(result.TargetName, imageTargetData.id, imageTargetData.size);
// Add newly created Image Target to dictionary.
mImageTargets[imageTargetData.id] = newImageTarget;
// Find or create ImageTargetBehaviour for this ImageTarget:
imageTargetBehaviour = stateManager.FindOrCreateImageTargetBehaviourForTrackable(newImageTarget, gameObject);
}
// get a list of currently existing trackables
IntPtr imageTargetIdArrayPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(int)) * newTrackableCount);
QCARWrapper.Instance.TargetFinderGetImageTargets(imageTargetIdArrayPtr, newTrackableCount);
List<int> targetIds = new List<int>();
for (int i = 0; i < newTrackableCount; i++)
{
IntPtr targetIdPtr = new IntPtr(imageTargetIdArrayPtr.ToInt32() + i * Marshal.SizeOf(typeof(int)));
int targetID = Marshal.ReadInt32(targetIdPtr);
targetIds.Add(targetID);
}
Marshal.FreeHGlobal(imageTargetIdArrayPtr);
// delete those targets that no longer exist
foreach (ImageTarget imageTarget in mImageTargets.Values.ToArray())
{
if (!targetIds.Contains(imageTarget.ID))
{
stateManager.DestroyTrackableBehavioursForTrackable(imageTarget);
mImageTargets.Remove(imageTarget.ID);
}
}
return imageTargetBehaviour;
}
