private void CreateImageTargets()
{
int trackableDataArrayLength = QCARWrapper.Instance.DataSetGetNumTrackableType(TypeMapping.GetTypeID(typeof(ImageTarget)), this.mDataSetPtr);
IntPtr trackableDataArray = Marshal.AllocHGlobal((int)(Marshal.SizeOf(typeof(ImageTargetData)) * trackableDataArrayLength));
if (QCARWrapper.Instance.DataSetGetTrackablesOfType(TypeMapping.GetTypeID(typeof(ImageTarget)), trackableDataArray, trackableDataArrayLength, this.mDataSetPtr) == 0)
{
Debug.LogError("Could not create Image Targets");
}
else
{
for (int i = 0; i < trackableDataArrayLength; i++)
{
IntPtr ptr = new IntPtr(trackableDataArray.ToInt32() + (i * Marshal.SizeOf(typeof(ImageTargetData))));
ImageTargetData data = (ImageTargetData)Marshal.PtrToStructure(ptr, typeof(ImageTargetData));
if (!this.mTrackablesDict.ContainsKey(data.id))
{
int capacity = 0x80;
StringBuilder trackableName = new StringBuilder(capacity);
QCARWrapper.Instance.DataSetGetTrackableName(this.mDataSetPtr, data.id, trackableName, capacity);
ImageTarget target = new ImageTargetImpl(trackableName.ToString(), data.id, ImageTargetType.PREDEFINED, this);
this.mTrackablesDict[data.id] = target;
}
}
Marshal.FreeHGlobal(trackableDataArray);
}
}
/// <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);
}
// Creates a new Image Target with the data of the Image Target with the
// given name.
// Returns false if Image Target does not exist.
public void GetImageTarget(string name, out ImageTargetData it)
{
try
{
it = imageTargets[name];
}
catch
{
throw;
}
}
// Add Virtual Button to the Image Target with the given imageTargetName.
public void AddVirtualButton(VirtualButtonData item, string imageTargetName)
{
try
{
ImageTargetData it = imageTargets[imageTargetName];
it.virtualButtons.Add(item);
}
catch
{
throw;
}
}
private void CreateImageTargets()
{
// Allocate array for all Image Targets.
int numImageTargets = dataSetGetNumTrackableType(
(int)TrackableBehaviour.TrackableType.IMAGE_TARGET,
mDataSetPtr);
IntPtr imageTargetDataPtr =
Marshal.AllocHGlobal(Marshal.SizeOf(typeof(ImageTargetData)) * numImageTargets);
// Copy Image Target properties from native.
if (dataSetGetTrackablesOfType((int)TrackableBehaviour.TrackableType.IMAGE_TARGET,
imageTargetDataPtr, numImageTargets,
mDataSetPtr) == 0)
{
Debug.LogError("Could not create Image Target Behaviours");
return;
}
// Create Image Target Behaviours.
for (int i = 0; i < numImageTargets; ++i)
{
IntPtr trackablePtr = new IntPtr(imageTargetDataPtr.ToInt32() + i *
Marshal.SizeOf(typeof(ImageTargetData)));
ImageTargetData trackableData = (ImageTargetData)
Marshal.PtrToStructure(trackablePtr, typeof(ImageTargetData));
// Do not overwrite existing Trackables.
if (mTrackableBehaviourDict.ContainsKey(trackableData.id))
{
continue;
}
// QCAR support names up to 64 characters in length, but here we allocate
// a slightly larger buffer:
int nameLength = 128;
System.Text.StringBuilder trackableName = new System.Text.StringBuilder(nameLength);
dataSetGetTrackableName(mDataSetPtr, trackableData.id, trackableName, nameLength);
ImageTargetBehaviour itb = CreateImageTarget(trackableData.id,
trackableName.ToString(), trackableData.size);
// Create Virtual Buttons for this Image Target.
CreateVirtualButtons(itb);
// Add newly created Image Target to dictionary.
mTrackableBehaviourDict[trackableData.id] = itb;
}
Marshal.FreeHGlobal(imageTargetDataPtr);
}
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);
}
// Set attributes of the Image Target with the given name.
// If the Image Target does not yet exist it is created automatically.
public void SetImageTarget(ImageTargetData item, string name)
{
imageTargets[name] = item;
}
// Creates a new Image Target with the data of the Image Target with the
// given name.
// Returns false if Image Target does not exist.
public void GetImageTarget(string name, out ImageTargetData it)
{
try
{
it = imageTargets[name];
}
catch
{
throw;
}
}
// Set attributes of the Image Target with the given name.
// If the Image Target does not yet exist it is created automatically.
public void SetImageTarget(ImageTargetData item, string name)
{
imageTargets[name] = item;
}
