(self)
return observable.MJCFFeature('xmat', self._entity.root_body)[6:]
The world's z-vector in this Walker's torso frame.
The world's z-vector in this Walker's torso frame.
The world s z - vector in this Walker s torso frame .
def world_zaxis(self):
    """The world's z-vector in this Walker's torso frame."""
    return observable.MJCFFeature('xmat', self._entity.root_body)[6:]
def world_zaxis ( self ) : return observable . MJCFFeature ( 'xmat' , self . _entity . root_body ) [ 6 : ]