(self)
return self.z_projection()[:, 2]
Returns projection from local z-axes to the z-axis of world.
Returns projection from local z-axes to the z-axis of world.
Returns projection from local z - axes to the z - axis of world .
def upright(self):
    """Returns projection from local z-axes to the z-axis of world."""
    return self.z_projection()[:, 2]
def upright ( self ) : return self . z_projection ( ) [ : , 2 ]