code: def orbit(self, azim, elev):
          
          self.azimuth += azim
          self.elevation = np.clip(self.elevation + elev, -90, 90)
          self.view_changed()
docs: Orbits the camera around the center position.
  
          Parameters
          ----------
          azim : float
              Angle in degrees to rotate horizontally around the center point.
          elev : float
              Angle in degrees to rotate vertically around the center point.