[vtkusers] vtkPointPicker

[Mathieu Malaterre]

Chris,

	Could you please provide a sample code that reproduce the bug you are 
mentionning. Also keep in mind that we don't always knows everybody's 
problems, so please make some references to your previous emails. This 
is also a good idea to read:

[How should I ask questions on the mailing lists?]
http://public.kitware.com/cgi-bin/vtkfaq?req=show&file=faq01.010.htp

Thanks for your attention,
Mathieu
BTW, there has been a recent fix in vtkPicker.cxx:

http://www.vtk.org/cgi-bin/cvsweb.cgi/VTK/Rendering/vtkPicker.cxx.diff?r1=1.88;r2=1.89;f=u


Chris Hood wrote:
> Here's one in Java. There's two problems: it ignores the picklist and 
> give random points and at some view points, the z value become negative 
> of what it should be. I've asked about these problems on the list, but 
> got no helpful responses so I think they may be bugs in VTK.
> 
>   void PointPick(MouseEvent e) {
>       int x=e.getX(), y=e.getY();
>       pointPicker = new vtkPointPicker();
>       pointPicker.AddPickList(actor3);      pointPicker.PickFromListOn();
>       pointPicker.AddPickList(actor0);      
> pointPicker.AddPickList(actor2);
>       pointPicker.Pick(x, y, 0, renPanel.GetRenderer());
>       int noOfPoints = 
> pointPicker.GetPickedPositions().GetNumberOfPoints();
>       if(noOfPoints!=0) {
>          double[][] points = new double [noOfPoints][3];
>          for(int i=0;i<noOfPoints;i++) {
>             points[i] = pointPicker.GetPickedPositions().GetPoint(i);
>             points[i][1]=-points[i][1];
>             System.out.println(points[i][0] + ",  " + points[i][1] + ",  
> " + points[i][2]);
>             }
>          }
>       }
> 
> 
> At 07:51 AM 5/25/2004, you wrote:
> 
>> Hi
>>      Can any body provide me with the program for
>> picking a picking the coordinates of a point with a
>> mouse. I collect the attached program from vtk mail
>> archive but it is not working.
>>
>> Can anybody have c++ version of the program in
>> /Examples/Annotation/Python/annotatePick.py.
>>
>>
>> Respond please.
>>
>>
>>    Regards
>>    Donald
>>
>>
>>
>>
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> 
> 
> ____________________________________
> Chris Hood
> Graduate Student Research Assistant
> University of Colorado, Boulder
> Space Environment Center - NOAA
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