Slicer/Slicer — pull request #168 by jcfr (2014-08-15 16:14:10+00:00)
Title: BUG: Ensure slice intersection position are updated using VTK6. Fixes #3...

...803

This commit fixes a regression introduced when transitioning to VTK6.

Note that ideally a pipeline should be created, that would avoid to
manually call Update or Modified.