Hi Martin, your right, this is strange. I filed a bug report (18699) and we will have a look at this today.
The intention behind this code is as follows: mitkDispatcher is aked if someone handles the event, and if it returns false, it is passed to VTK, to allow VTK Interactor to deal with the events. In 2D we handle the Display interaction with the DisplayInterator, in 3D the DisplayInteractor should (but currently doesn't) return false, and VTK takes the place to handle the events. (Here the strange thing is that we still execute a lot of unnecessary code that seems to have no effect). Unfortunately I cannot give any good advice before I haven't completely figured out why it is currently like that and if it is possible to unify 2D and 2D behavior within the DisplayInteractor. I'd be happy if you keep us updated about your progress and the problems you run into! Best, Christian -----Original Message----- From: Martin Klemm [mailto:martin.kl...@hs-offenburg.de] Sent: Freitag, 30. Januar 2015 15:42 To: mitk-users@lists.sourceforge.net Subject: [mitk-users] Pointless DisplayInteractor in VTK 3D render window Hi all, I am currently working on implementing touch interactions in my QML application. After I recognize gestures I send them to the display interactor to process them. I adapted the display interactor to work for GestureEvents. The events arrived but nothing was moving in the render window. I though that my parameters are wrong. So I wanted to check the parameters when a mouse event it handled. The result were approximately the same values I already had before... So I dug deeper... I made a test in an void QmlMitkRenderWindowItem::mousePressEvent(QMouseEvent* me) which is the equivalent to void QmitkRenderWindow::mousePressEvent(QMouseEvent *me) In there the incoming mouse event is converted into a mitk::mouseEvent and then passed to the dispatcher to be handled. The dispatcher sends it to display interactor to react. And at the end of the method the mouse event is passed to the vtk widget/quick item: QVTKWidget::mousePressEvent(me); respectively QVTKQuickItem::mousePressEvent(me); So I was wondering why you have to pass the mouse event to vtk if the display interactor is supposed to handle the event. I deactivated all calls of this sort and then no interaction was working anymore!!! That means that we have a display interactor for this render window but in fact it has no influence on the interaction. Do I miss something or is it really like this? Is this a known issue? I thought that I could send my gesture events to the display interactor to adapt the scene. But knowing about this, I think that I have to convert my touch events into mouse events and then send them to the QVTKQuickItem, since it is not supporting TouchEvents. Does anyone has a better idea? I forgot to mention above that this just happens in the 3D scene. In the 2D scenes the DisplayInteractor is working as expected, even when the events are not passed to the qvtkwidget/quickitem. Best Martin ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ mitk-users mailing list mitk-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mitk-users ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ mitk-users mailing list mitk-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mitk-users
