private void updateOverlayGuiSizeAndPosition()
{
var overlay = OpenVR.Overlay;
if (overlay == null)
{
return;
}
var offsetPosition = new Vector3(0f, VHVRConfig.GetOverlayVerticalOffset(), VHVRConfig.GetOverlayDistance());
var offsetRotation = Quaternion.identity;
if (useDynamicallyPositionedGui())
{
var currentDirection = getCurrentGuiDirection();
if (isRecentering)
{
// We are currently recentering, so calculate a new rotation a step towards the target
// rotation and reposition the GUI to that rotation. If the new rotation is close
// enough to the target, then end recentering for next frame.
var targetDirection = getTargetGuiDirection();
var stepDirection = Vector3.Slerp(currentDirection, targetDirection, VHVRConfig.GuiRecenterSpeed() * Mathf.Deg2Rad * Time.deltaTime);
var stepRotation = Quaternion.LookRotation(stepDirection, VRPlayer.instance.transform.up);
offsetPosition = stepRotation * offsetPosition;
offsetRotation = stepRotation;
maybeResetIsRecentering(stepDirection, targetDirection);
}
else
{
// Not recentering, so leave the GUI position where it is at
var currentRotation = Quaternion.LookRotation(currentDirection, VRPlayer.instance.transform.up);
offsetPosition = currentRotation * offsetPosition;
offsetRotation = currentRotation;
}
}
var offset = new SteamVR_Utils.RigidTransform(offsetPosition, offsetRotation);
overlay.SetOverlayWidthInMeters(_overlay, VHVRConfig.GetOverlayWidth());
var t = offset.ToHmdMatrix34();
overlay.SetOverlayTransformAbsolute(_overlay, SteamVR.settings.trackingSpace, ref t);
}