public void UpdateGroupRotationR(Quaternion rot)
{
foreach (SceneObjectPart parts in ChildrenList)
{
parts.StoreUndoState();
}
m_rootPart.UpdateRotation(rot);
PhysicsActor actor = m_rootPart.PhysActor;
if (actor != null)
actor.Orientation = m_rootPart.GetRotationOffset();
HasGroupChanged = true;
ScheduleGroupTerseUpdate();
}