[vtkusers] Re: Best vtk / QT package?

Stefan Bruckner stefan.bruckner at chello.at
Fri Sep 6 10:47:48 EDT 2002


That should work. I actually just saw the GetDataPointer() Method after
I sent the last message. 
 
I have not tried stereo rendering yet ... you're having troubles with
it, ríght?
 
--
Stefan Bruckner
 

-----Ursprüngliche Nachricht-----
Von: Steffen Oeltze [mailto:Steffen.Oeltze at Student.Uni-Magdeburg.DE] 
Gesendet: Freitag, 06. September 2002 16:20
An: Stefan Bruckner
Cc: vtkusers at public.kitware.com
Betreff: Re: [vtkusers] Re: Best vtk / QT package?


I have found a convenient way in the meanwhile. When the user changes
the rgb-values (the scalar value keeps the same) of a point I simply use
the function addRGBValue(...). VTK internally replaces the old point by
the new one. When the user changes the scalar value I use the
getDataPointer()-function which returns a pointer to the transfer
function and then, I manipulate the function directly by replacing the
scalar value each time the user moves a slider. This is actually what
I'm planing to do. I haven't implemented it yet. 
I expect to be at most 10 points in my functions.

Have you tried to enable a vtkQtRenderWindow for stereo rendering yet ?

Steffen




Stefan Bruckner wrote:


What I did in the Java-Program is to simple store the function currently
displayed in the edior in an array. When the vtk window has to be
redrawn and the transfer function has been modified, I just create a new
vtkColorTransferFunction from the array. Although this is of course not
optimal, the overhead introduced is negligible, if node counts don't get
to high. How many nodes do you expect to be in your functions?
 
 
 -----Ursprüngliche Nachricht-----
Von: Steffen Oeltze [mailto:Steffen.Oeltze at Student.Uni-Magdeburg.DE] 
Gesendet: Freitag, 06. September 2002 09:45
An: Stefan Bruckner; VTK users
Betreff: Re: [vtkusers] Re: Best vtk / QT package?



I have got a question concerning the package you have mentioned. I'm
using vtkqt by Matthias Koenig which works fine except for the fact that
I'm not able to render stereo in his vtkQtRenderWindow. Calling the
method "StereoCapableOn()" results in an error. Could you please test
for me if this method works with the package you are using ?

A week ago I downloaded your java-program to graphically edit a transfer
function. I'm trying to
implement something similar using Qt. Unfortunately, I encountered a
problem concerning the
editing of a vtkColorTransferFunction. You  can add a point to this
function and you can remove
one but I couldn't find a method to modify an already existing point.
However, this is necessary
for my application because I want to enable the user to change the
transfer function interactively.
The problem is that I don't want a new point to be added each time the
user changes the color
but I want to modify the recently added point. How did you manage this ?

Regards,
Steffen

Stefan Bruckner wrote:


I've examined nearly all of the packages out there, most of them are
pretty outdated. The best and probably most current (VTK 4, QT 3) is
VTK_QT by Carsten Kuebler. 

Source is provided in an MS Visual Studio project, but I've managed to
compile it under Linux within minutes without problems.

Download: http://wwwipr.ira.uka.de/~kuebler/vtkqt/index.html
<http://wwwipr.ira.uka.de/%7Ekuebler/vtkqt/index.html> 

--
Stefan Bruckner




I am trying to get vtk and qt working properly.

Which is the best vtk/qt package available?
Which has the best chance of being supported in the future?
Which should I avoid altogether? (maybe too old to work with newer
versions?)

I appreciate all help and opinions!

Thanks,
Alex Lear

_______________________________________________
This is the private VTK discussion list. 
Please keep messages on-topic. Check the FAQ at:


 <http://public.kitware.com/cgi-bin/vtkfaq>
<http://public.kitware.com/cgi-bin/vtkfaq>


Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/vtkusers






_______________________________________________
This is the private VTK discussion list. 
Please keep messages on-topic. Check the FAQ at:
<http://public.kitware.com/cgi-bin/vtkfaq>
<http://public.kitware.com/cgi-bin/vtkfaq>
Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/vtkusers







-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20020906/19a028e2/attachment.htm>


More information about the vtkusers mailing list