message: fixing default lengths
diff: @@ -47,8 +47,8 @@ class BaseViewer(Viewer):
  self.enforce_x_range = kwargs.pop("enforce_x_range", True)
  self.enforce_y_range = kwargs.pop("enforce_y_range", False)
  - self.x_length = kwargs.pop("enforce_y_range", np.sum(self.world_x_range))
  - self.y_length = kwargs.pop("enforce_y_range", np.sum(self.world_y_range))
  + self.x_length = kwargs.pop("enforce_y_range", np.sum(np.absolute(self.world_x_range)))
  + self.y_length = kwargs.pop("enforce_y_range", np.sum(np.absolute(self.world_y_range)))
  if not self.use_world_bounds:
  aspect_ratio = self.get_aspect_ratio()
  