[vtkusers] Fwd: QVTKWidget in Python ?

[Jothybasu Selvaraj]

---------- Forwarded message ----------
From: Adam Stylinski <stylinae at mail.uc.edu>
Date: Mon, Nov 28, 2011 at 3:59 PM
Subject: Re: [vtkusers] QVTKWidget in Python ?
To: Jothybasu Selvaraj <jothybasu at gmail.com>




On Mon, Nov 28, 2011 at 10:48 AM, Jothybasu Selvaraj <jothybasu at gmail.com>wrote:

> Here is the working code
>
> import sys
>
> from PyQt4 import QtCore, QtGui
> from PyQt4.QtGui import *
> from vtk.qt4.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor
> import vtk
>
> class MainWindow(QtGui.QMainWindow):
>     def __init__(self, parent = None):
>         super(MainWindow, self).__init__(parent)
>         self.initUI()
>
>     def initUI(self):
>        widget = QVTKRenderWindowInteractor()
>        widget.Initialize()
>        widget.Start()
> ##       widget.AddObserver("ExitEvent", lambda o, e, a=app: a.quit())
>
>
>        ren = vtk.vtkRenderer()
>        widget.GetRenderWindow().AddRenderer(ren)
>
>        cone = vtk.vtkConeSource()
>        cone.SetResolution(24)
>
>        coneMapper = vtk.vtkPolyDataMapper()
>        coneMapper.SetInput(cone.GetOutput())
>
>        coneActor = vtk.vtkActor()
>        coneActor.SetMapper(coneMapper)
>        ren.AddActor(coneActor)
>        widget.show()
>
>
>
> if __name__ == "__main__":
>     app=QApplication(sys.argv)
>     form=MainWindow()
>     app.exec_()
>
> Jothy
>
>
> On Mon, Nov 28, 2011 at 3:33 PM, chasank <chasank at gmail.com> wrote:
>
>> What's the wrong with below script? It just shows a blank window, where is
>> the interactor window?
>> Can anyone help me?
>>
>> import sys
>> from Nifti import Nifti
>> from PyQt4 import QtCore, QtGui
>> from PyQt4.QtGui import *
>> from vtk.qt4.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor
>> import vtk
>>
>> class MainWindow(QtGui.QMainWindow):
>>
>>  def __init__(self, parent = None):
>>    super(MainWindow, self).__init__(parent)
>>    self.initUI()
>>
>>  def initUI(self):
>>
>>    widget = QVTKRenderWindowInteractor(self)
>>    widget.Initialize()
>>    widget.Start()
>>    widget.AddObserver("ExitEvent", lambda o, e, a=app: a.quit())
>>
>>    ren = vtk.vtkRenderer()
>>    widget.GetRenderWindow().AddRenderer(ren)
>>
>>    cone = vtk.vtkConeSource()
>>    cone.SetResolution(24)
>>
>>    coneMapper = vtk.vtkPolyDataMapper()
>>    coneMapper.SetInput(cone.GetOutput())
>>
>>    coneActor = vtk.vtkActor()
>>    coneActor.SetMapper(coneMapper)
>>    ren.AddActor(coneActor)
>>    widget.show()
>>
>>    layout = QVBoxLayout()
>>    layout.addWidget(widget)
>>
>>    central = QWidget()
>>    central.setLayout(layout)
>>
>>    self.setCentralWidget(central)
>>    self.setWindowTitle('Example')
>>    self.show()
>>
>>
>> --
>> View this message in context:
>> http://vtk.1045678.n5.nabble.com/QVTKWidget-in-Python-tp5024567p5029176.html
>> Sent from the VTK - Users mailing list archive at Nabble.com.
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>
>
>
> --
> Jothy
>
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at:
> http://www.vtk.org/Wiki/VTK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.vtk.org/mailman/listinfo/vtkusers
>
>
Ah, guess you were missing the QT event loop.  The way to use python
bindings+QT bindings with VTK may very well be different from C++.  Strange
that you had any window at all without app.exec().
 My stent with PyQt was pretty brief.



-- 
Jothy
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