protected override void OnUpdateFrame(FrameEventArgs e)
{
base.OnUpdateFrame(e);
//get the time the frame will be displayed on the oculus
double displayMidpoint = OvrDLL.ovr_GetPredictedDisplayTime(session, 0);
//get the predicted position of the device at that time
TrackingState ts = OvrDLL.ovr_GetTrackingState(session, displayMidpoint, true);
//calculate eye poses
Vector3[] eyeOffsets = new Vector3[2] { eyes[0].desc.HmdToEyeOffset, eyes[1].desc.HmdToEyeOffset };
Posef[] eyePoses = new Posef[2];
OvrDLL.ovr_CalcEyePoses(ts.HeadPose.ThePose, eyeOffsets, eyePoses);
//get the orientation of the hmd if it was tracked
if (ts.StatusFlags.HasFlag(StatusBits.OrientationTracked))
{
eyes[0].pose.Orientation = eyePoses[0].Orientation;
eyes[1].pose.Orientation = eyePoses[1].Orientation;
}
else
{
eyes[0].pose.Orientation = Quaternion.Identity;
eyes[1].pose.Orientation = Quaternion.Identity;
}
//get the position of the hmd if it was tracked
if (ts.StatusFlags.HasFlag(StatusBits.PositionTracked))
{
eyes[0].pose.Position = eyePoses[0].Position;
eyes[1].pose.Position = eyePoses[1].Position;
}
else
{
eyes[0].pose.Position = Vector3.Zero;
eyes[1].pose.Position = Vector3.Zero;
}
}
