code: def update_camera(self,**kargs):
          
          self.Camera.set_params(**kargs)
          self._x, self._y, self._hsml, self._kview = self.__compute_scene()
          self._m = self._Particles._mass[self._kview]
docs: - update_camera(**kwarg): By using this method you can define all 
          the new paramenters of the camera. Read the available **kwarg in 
          the sphviewer.Camera documentation.