[vtkusers] vtkCellPickers and vtkPointPickers in a vtkPanel

[Frederic DANESI]

... vtkPanel is actually a subclass of java.awt.Canvas ...
Then you should not use vtkPanel neither ... ???

Fred.

> -----Message d'origine-----
> De : vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] De la part
de
> William E Lucarell
> Envoyé : vendredi 4 avril 2008 16:51
> À : 'Amy Squillacote'
> Cc : 'VTK_question'
> Objet : Re: [vtkusers] vtkCellPickers and vtkPointPickers in a vtkPanel
> 
> Amy,
> 
> I'm using it in a Java Swing application with Swing controls (JLabels,
> JSliders, etc).  I have a JPanel window in my form and I put a vtkPanel in
> the JPanel. I don't want to mix Swing and AWT components.
> 
> - Bill
> 
> -----Original Message-----
> From: Amy Squillacote [mailto:ahs at cfdrc.com]
> Sent: Friday, April 04, 2008 10:24 AM
> To: William E Lucarell
> Cc: 'VTK_question'
> Subject: Re: [vtkusers] vtkCellPickers and vtkPointPickers in a vtkPanel
> 
> Hi Bill,
> 
> In vtkCanvas, there are methods for taking java mouse events and passing
> the appropriate information to the render window interactor. (See the
> public mouse* methods that take a MouseEvent parameter.) These methods,
> in addition to a render window interactor, are what makes it possible to
> do things like picking, interacting with 3D widgets, etc. These methods
> are not in vtkPanel.
> 
> Is there a particular reason you need to use a vtkPanel and not its
> vtkCanvas subclass?
> 
> - Amy
> 
> William E Lucarell wrote:
> > -->
> >
> > I have a vtkPolyData mesh with scalar data and a
> > vtkBandedPolyDataContourFilter. I am trying to use pickers to get the
> > scalar data at a point. It works with a vtkCanvas, but *not with a
> > vtkPanel*. Here is the code I use in the addWindowSetObserver method
> > to make the picker work. I want it to work with a vtkPointPicker and
> > with a vtkPanel. The problem is that vtkPanels do not have a getIren()
> > method like the vtkCanvas.
> >
> > // Delay creation and setup of picker till the VTK window is ready
> >
> > renWin.addWindowSetObserver(new Observer() {
> >
> > public void update(Observable o, Object arg) {
> >
> > // Create a cell picker.
> >
> > picker = new vtkCellPicker();
> >
> > // Now at the end of the pick event call the above function.
> >
> > picker.AddObserver("EndPickEvent", AnnotatePick.this, "annotatePick");
> >
> > renWin.getIren().SetPicker(picker);
> >
> > // Initially pick the cell at this location.
> >
> > picker.Pick(85, 126, 0, renWin.GetRenderer());
> >
> > }
> >
> > });
> >
> > I tried creating a vtkRenderWindowInteractor and setting the render
> > window to renWin.GetRenderWindow(). However, the picker doesn't work
> > when I do this; it only works with the vtkCanvas. Is there any way you
> > can implement pickers with the vtkPanel, or can it only be done with a
> > vtkCanvas?
> >
> > Thanks in advance!
> >
> > */Bill Lucarell/*
> >
> > ------------------------------------------------------------------------
> >
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> 
> --
> Amy Squillacote                    Phone: (256) 726-4839
> Computer Scientist                 Fax: (256) 726-4806
> CFD Research Corporation           Web: http://www.cfdrc.com
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> Huntsville, AL  35805
> 
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