[vtkusers] Selection offset from mouse

[Eric E. Monson]

Hey Jeff,

Yeah, I have a feeling you're right, but I was still hoping someone  
had some ideas since it's easier for me to develop algorithms within a  
simple Carbon window before moving code to a more complete app with  
"real" windows.

Plus, if it's really something everyone else using Carbon sees, too,  
then it makes it more difficult for all of us beginners to run and  
play with the example scripts.

Thanks,
-Eric


On Dec 4, 2008, at 3:23 PM, Jeff Baumes wrote:

> This is likely a problem specific to Carbon. The issue may disappear
> if you put the render window inside a "real" window (e.g. a Tk
> window), instead of just showing the render window directly.
>
> Jeff
>
> On Thu, Dec 4, 2008 at 2:28 PM, Eric E. Monson <emonson at cs.duke.edu>  
> wrote:
>> Hello,
>>
>> I'm noticing a strange problem where selections in a  
>> vtkRenderWindow are
>> offset from the mouse position. (OS X 10.5.5 Carbon and CVS VTK --  
>> don't see
>> it with OverView or ParaView.)  I notice this most with the Infovis  
>> graph
>> view examples because a rubber-band selection mode is part of the  
>> default
>> interactor, but I can also see this in examples like
>> Annotation/Tcl/annotatePick.tcl
>>
>> The selection is offset from the mouse by the same amount as the  
>> render
>> window upper left corner is offset from the upper left corner of  
>> the screen
>> area (right below the menu bar). Here are four screen shots where  
>> you can't
>> see the cursor, but I have dragged the mouse over the _same_ are of  
>> the
>> window -- I started my selection in the upper left corner of the  
>> render
>> window and dragged to the black dot near the center. Notice how the
>> selection rectangle is offset differently depending on where the  
>> window is
>> placed before I do the selection...
>>
>> Anybody else ever see this? Any ideas?
>>
>> Thanks,
>> -Eric
>>
>> ------------------------------------------------------
>> Eric E Monson
>> Duke Visualization Technology Group
>>
>>
>>
>>
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>
>
>
> -- 
> Jeff Baumes, Ph.D.
> R&D Engineer, Kitware Inc.
> (518) 371-3971 x132
> jeff.baumes at kitware.com