Hello Simon!
The PointListChanged() signal is supposed to be emitted whenever the
PointSet gets cleared or a new PointSet is loaded. So changing the order of
the points - or more specific: changing the ID of two or more points by
swapping their PointSet IDs - won't emit this signal.
Maybe the name of the signal isn't the best.
Setup an observer on events like that may do it?
As I mentioned, by pressing F3/F2 the user swaps the (PointSet-)IDs of two
nearby points. In your example the points only change their positions
within the ListView, not the PointSet.
I agree, that there should be a way to give a point a specific PointSetID
via the widget.
Greetings,
John
>
> -------- Original-Nachricht --------
> Datum: Tue, 03 Aug 2010 09:56:37 +0200
> Von: Simon Eck <[email protected]>
> An: [email protected]
> Betreff: [mitk-users] QmitkPointListWidget / QmitkPointListView behavior
> when modifying points by key press
>
> Dear list,
>
> I recently tried to react to changes of a mitk::PointSet done by
> QmitkPointListWidget. While connecting to signal PointListChanged() of
> class QmitkPointListWidget works fine for changes performed by buttons
> of the widget (e.g. delete a point), it is currently not emitted by
> changes performed by key press events.
> I'm not sure if this behavior is desired, but for convenience i inserted
> an appropriate signal to QmitkPointListView and a slot to
> QmitkPointListWidget catching this signal.
>
> I attached the modifications based on revision 24408 if one wants to
> take a look.
>
>
> Another issue i noticed is that when changing the order of points with
> QmitkPointSetWidget by using F2 / F3 button, the point identifier
> remains at the former index of the pointset, exchanging only the
> coordinates. E.g. the pressing F3 on point with identifier 4 in the
> following constellation
>
> 0: (-9.592, -3.257, -1127.020)
> 4: (-52.914, -31.455, -1020.490)
> 11: (-41.563, 7.705, -1090.180)
>
> will result in
>
> 0: (-52.914, -31.455, -1020.490)
> 4: (-9.592, -3.257, -1127.020)
> 11: (-41.563, 7.705, -1090.180)
>
> While this may be desired, i expected the following:
> 4: (-52.914, -31.455, -1020.490)
> 0: (-9.592, -3.257, -1127.020)
> 11: (-41.563, 7.705, -1090.180)
>
>
> Best wishes,
> Simon
>
>
> --
> Simon Eck
>
> Biomedical Computer Vision Group
> Im Neuenheimer Feld 267
> 69120 Heidelberg
>
> [email protected]
>
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