public unsafe override TrackableChanges <XRFace> GetChanges(
XRFace defaultFace,
Allocator allocator)
{
void *addedPtr, updatedPtr, removedPtr;
int addedLength, updatedLength, removedLength, elementSize;
var context = UnityARCore_faceTracking_AcquireChanges(
out addedPtr, out addedLength,
out updatedPtr, out updatedLength,
out removedPtr, out removedLength,
out elementSize);
try
{
return(new TrackableChanges <XRFace>(
addedPtr, addedLength,
updatedPtr, updatedLength,
removedPtr, removedLength,
defaultFace, elementSize,
allocator));
}
finally
{
UnityARCore_faceTracking_ReleaseChanges(context);
}
}
static XRFace XRFaceFromIMRFace(IMRFace mrFace)
{
var face = new XRFace
{
m_TrackableId = new TrackableId(mrFace.id.subId1, mrFace.id.subId2),
m_Pose = mrFace.pose,
m_TrackingState = TrackingState.Tracking,
#if ARSUBSYSTEMS_3_OR_NEWER
m_LeftEyePose = Pose.identity,
m_RightEyePose = Pose.identity,
#endif
};
#if ARSUBSYSTEMS_3_OR_NEWER
if (mrFace.LandmarkPoses.TryGetValue(MRFaceLandmark.LeftEye, out var pose))
{
face.m_LeftEyePose = new Pose(pose.position - mrFace.pose.position,
Quaternion.Inverse(mrFace.pose.rotation) * pose.rotation);
}
if (mrFace.LandmarkPoses.TryGetValue(MRFaceLandmark.RightEye, out pose))
{
face.m_RightEyePose = new Pose(pose.position - mrFace.pose.position,
Quaternion.Inverse(mrFace.pose.rotation) * pose.rotation);
}
#endif
return(face);
}
ARFace AddFace(XRFace xrFace)
{
var go = CreateGameObject();
go.layer = gameObject.layer;
var face = go.GetComponent <ARFace>();
if (face == null)
{
face = go.AddComponent <ARFace>();
}
m_Faces.Add(xrFace.trackableId, face);
return(face);
}
/// <summary>
/// Get the changes (added, updated, and removed) faces since the last call to <see cref="GetChanges(Allocator)"/>.
/// </summary>
/// <param name="defaultFace">
/// The default face. This should be used to initialize the returned <c>NativeArray</c>s for backwards compatibility.
/// See <see cref="TrackableChanges{T}.TrackableChanges(void*, int, void*, int, void*, int, T, int, Allocator)"/>.
/// </param>
/// <param name="allocator">An <c>Allocator</c> to use when allocating the returned <c>NativeArray</c>s.</param>
/// <returns>
/// <see cref="TrackableChanges{T}"/> describing the faces that have been added, updated, and removed
/// since the last call to <see cref="GetChanges(Allocator)"/>. The changes should be allocated using
/// <paramref name="allocator"/>.
/// </returns>
public abstract TrackableChanges <XRFace> GetChanges(XRFace defaultFace, Allocator allocator);
static void UnityARKit_face_anchor_removed(XRFace anchor)
{
InvokeFaceRemovedCallback(anchor, s_CurrentInstance);
}
static void UnityARKit_face_anchor_updated(XRFace anchor)
{
InvokeFaceUpdatedCallback(anchor, s_CurrentInstance);
}