[vtkusers] Displaying vtkPolyData while writing on it within Qt objects (QVTKWidget)

[Darshan Pai]

If you are just manipulating the points maybe you can try the
vtkprogrammableFilter . There is an example on the Wiki you can find .

Regards
DArshan

On Fri, Jun 18, 2010 at 11:22 AM, Barth, Sebastian <
sebastian.barth at iosb.fraunhofer.de> wrote:

> Hello vtkusers,
>
> my application uses the QVTKWidget with Qt 4.6.2 and VTK 5.6.0 as a part of
> it's window.
>
> I have a 3D visualisation of a cluster of points stored in a vtkPolyData.
> On my Qt window I can start a QTimer whose timeout() signal is connected to
> a slot which manipulates the points in the vtkPolyData and updates the
> visualisation pipeline with QVTKWidget::update().
>
> My vtkRendererWindow uses the default interactor style (trackball camera).
>
> While moving the camera (mouse interaction) the QVTKWindow gets updated,
> but the vtkPolyData does not.
> This of course, is a Qt problem, but I want to know if I have to do
> anything special if I want to write on the vtkPolyData object from out
> another thread (QThread) while I'm moving the camera and displaying the
> current written Data. Maybe there is a simplier solution, I don't know!
>
> It's the first time I work with VTK, QT and even threads and I appreciate
> every help!
>
>
> Thanks a lot,
>
> Sebastian
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