After investigation we recall that this was the change which re-centered the box everytime the visible model changes. But for some situations, like dynamic data changes in the scene this is problematics. Such as when fiducial tractography is going on or when tracked data is updated.

This code was first introduced by Bill lorensen
See http://viewvc.slicer.org/viewvc.cgi/Slicer4?view=revision&revision=12184

ENH: Box axis and labels now resize when actors are added or changed to the 3D window.

... then disabled by Alex in commit r13859

ENH: models display manager: first cut

Looking through this code, I can't see any reason to change the camera whenever the axis is updated. I suggest that the commented out code is removed entirely.

Thanks for investigating. Could you submit a PR ?

And if re-centering the view when model visibility changes (or if user select a model), adding an option to link the Model module with the 3D view may be a more sensitive approach.

With this code gone, http://na-mic.org/Mantis/view.php?id=2753 becomes fixable because the camera will never move when the bounding box is updated. Thoughts?

Fixed in r25194
See http://viewvc.slicer.org/viewvc.cgi/Slicer4?view=revision&revision=25194

re: becomes fixable because the camera will never move when the bounding box is updated

• Since the code was never executed since 2010 and this commit is only a cleanup, let's make sure we understand what is making it fixable.

• Could you also look at http://na-mic.org/Mantis/view.php?id=2752 and see how it correlates ?

Thanks
Jc