// Update Virtual Button states.
public void UpdateVirtualButtons(int numVirtualButtons, IntPtr virtualButtonPtr)
{
Dictionary <int, QCARManagerImpl.VirtualButtonData> vbResults = new Dictionary <int, QCARManagerImpl.VirtualButtonData>();
// create a dictionary of all results
for (int i = 0; i < numVirtualButtons; i++)
{
IntPtr vbPtr = new IntPtr(virtualButtonPtr.ToInt32() + i *
Marshal.SizeOf(typeof(QCARManagerImpl.VirtualButtonData)));
QCARManagerImpl.VirtualButtonData vbData = (QCARManagerImpl.VirtualButtonData)
Marshal.PtrToStructure(vbPtr, typeof(QCARManagerImpl.VirtualButtonData));
vbResults.Add(vbData.id, vbData);
}
List <VirtualButtonBehaviour> vbBehavioursToUpdate = new List <VirtualButtonBehaviour>();
// go over all trackable behaviours and find the virtual buttons to update
foreach (TrackableBehaviour trackableBehaviour in mTrackableBehaviours.Values)
{
ImageTargetBehaviour it = trackableBehaviour as ImageTargetBehaviour;
if (it != null && it.enabled)
{
foreach (VirtualButtonBehaviour virtualButtonBehaviour in it.GetVirtualButtonBehaviours())
{
if (virtualButtonBehaviour.enabled)
{
vbBehavioursToUpdate.Add(virtualButtonBehaviour);
}
}
}
}
// update the virtual buttons:
foreach (VirtualButtonBehaviour virtualButtonBehaviour in vbBehavioursToUpdate)
{
QCARManagerImpl.VirtualButtonData vbData;
if (vbResults.TryGetValue(virtualButtonBehaviour.VirtualButton.ID, out vbData))
{
virtualButtonBehaviour.OnTrackerUpdated(vbData.isPressed > 0);
}
else
{
virtualButtonBehaviour.OnTrackerUpdated(false);
}
}
}