Returns the default focal points and viewup. Uses ResetCamera to
        make a useful view.

def get_default_cam_pos(self):
        """
        Returns the default focal points and viewup. Uses ResetCamera to
        make a useful view.
        """
        focal_pt = self.center
        return [np.array(rcParams['camera']['position']) + np.array(focal_pt),
                focal_pt, rcParams['camera']['viewup']]