//this function will add newly trackable into trackableManager
public void GetAllTrackables(List <ARTrackable> trackableList)
{
trackableList.Clear();
IntPtr trackableListHandle = m_ndkSession.TrackableAdapter.CreateList();
NDKAPI.HwArSession_getAllTrackables(m_ndkSession.SessionHandle,
NDKARTrackableType.BaseTrackable, trackableListHandle);
int cntOfTrackable = m_ndkSession.TrackableAdapter.GetListSize(trackableListHandle);
for (int i = 0; i < cntOfTrackable; i++)
{
IntPtr trackableHandle = m_ndkSession.TrackableAdapter.AcquireListItem(trackableListHandle, i);
//todo the following code is to mask 0x41520105 in arcore
NDKARTrackableType type = m_ndkSession.TrackableAdapter.GetType(trackableHandle);
if ((int)type == 0x41520105)
{
m_ndkSession.TrackableAdapter.Release(trackableHandle);
continue;
}
trackableList.Add(m_ndkSession.TrackableManager.ARTrackableFactory(trackableHandle, true));
}
m_ndkSession.TrackableAdapter.DestroyList(trackableListHandle);
}
public NDKARTrackableType GetType(IntPtr trackableHandle)
{
NDKARTrackableType type = NDKARTrackableType.BaseTrackable;
NDKAPI.HwArTrackable_getType(m_ndkSession.SessionHandle, trackableHandle, ref type);
return(type);
}
public void GetUpdatedTrackables(List <ARTrackable> trackableList)
{
IntPtr trackableListHandle = m_ndkSession.TrackableAdapter.CreateList();
NDKAPI.HwArFrame_getUpdatedTrackables(m_ndkSession.SessionHandle, m_ndkSession.FrameHandle,
NDKARTrackableType.BaseTrackable, trackableListHandle);
int sizeOfList = m_ndkSession.TrackableAdapter.GetListSize(trackableListHandle);
trackableList.Clear();
for (int i = 0; i < sizeOfList; i++)
{
IntPtr trackableHandle = m_ndkSession.TrackableAdapter.AcquireListItem(trackableListHandle, i);
//todo the flollowing code is used to mask the unpublic trackable of arcore
NDKARTrackableType trackableType = m_ndkSession.TrackableAdapter.GetType(trackableHandle);
if ((int)trackableType == 0x41520105)
{
m_ndkSession.TrackableAdapter.Release(trackableHandle);
continue;
}
trackableList.Add(m_ndkSession.TrackableManager.ARTrackableFactory(trackableHandle, false));
}
m_ndkSession.TrackableAdapter.DestroyList(trackableListHandle);
}
public ARTrackable ARTrackableFactory(IntPtr nativeHandle, bool isCreate = false)
{
if (nativeHandle == IntPtr.Zero)
{
return(null);
}
ARTrackable result;
if (m_trackableDict.TryGetValue(nativeHandle, out result))
{
m_ndkSession.TrackableAdapter.Release(nativeHandle);
return(result);
}
if (isCreate)
{
NDKARTrackableType ndkTrackableType = m_ndkSession.TrackableAdapter.GetType(nativeHandle);
ARDebug.LogInfo("trackable type {0}", ndkTrackableType.ToString());
switch (ndkTrackableType)
{
case NDKARTrackableType.Plane:
result = new ARPlane(nativeHandle, m_ndkSession);
break;
case NDKARTrackableType.Point:
result = new ARPoint(nativeHandle, m_ndkSession);
break;
case NDKARTrackableType.Body:
result = new ARBody(nativeHandle, m_ndkSession);
break;
case NDKARTrackableType.Hand:
result = new ARHand(nativeHandle, m_ndkSession);
break;
case NDKARTrackableType.Face:
result = new ARFace(nativeHandle, m_ndkSession);
break;
case NDKARTrackableType.AugmentedImage:
result = new ARAugmentedImage(nativeHandle, m_ndkSession);
break;
//todo add more trackable
default:
m_ndkSession.TrackableAdapter.Release(nativeHandle);
throw new NotImplementedException("ARTrackableFactory: no constructor for requested type");
}
m_trackableDict.Add(nativeHandle, result);
return(result);
}
return(null);
}
public static extern void HwArTrackable_getType(IntPtr sessionHandle, IntPtr trackableHandle,
ref NDKARTrackableType trackableType);
public static extern void HwArSession_getAllTrackables(IntPtr sessionHandle,
NDKARTrackableType filterType, IntPtr outTrackableListHandle);
public static extern void HwArFrame_getUpdatedTrackables(IntPtr sessionHandle, IntPtr frameHandle,
NDKARTrackableType filterType, IntPtr outTrackableListHandle);
