[vtkusers] wxWidget Python vtkImageViewer2

[Suyang Mei]

Hi, all -

  I am new to VTK world.
  
  My co-worker built a prototype using wxWidget, Pyhton & VTK for viewing 3D CT image. She finished 3D volume rendering and I am taking over her task and continue the development work of displaying the 2D slices from a 3D volume.

  I am planning to use vtkImageViewer2, here is the sample codes I am working on (I use a 2D slice to start with, teh Forest4.png with the size of 192 & 256)) -

####################################
import vtk
from vtk.util.misc import vtkGetDataRoot
from vtk.wx.wxVTKRenderWindowInteractor import *
from wxPython.wx import *

app = wxPySimpleApp()

frame = wxFrame(None, -1, "wxRenderWindow", size=wxSize(400,400))
frame.Show(1)

reader = vtk.vtkPNGReader ()
reader.SetDataSpacing (1.0, 1.0, 1.0)
reader.SetFileName ( "Forest4.png")

iren = wxVTKRenderWindowInteractor(frame, -1)
iren.AddObserver("ExitEvent", lambda o,e,f=frame: f.Close())

viewer = vtk.vtkImageViewer2()
viewer.SetInput ( reader.GetOutput() )
viewer.SetupInteractor (iren)
#viewer.GetRenderer().ResetCameraClippingRange()

app.MainLoop()
####################################

  When I run this *.py file, I got the image displayed at the upper left corner of the view port, only occupied a small portion. How do I correctly set the zoom factor? 

  I googled vtkImageViewer2, back to 2003, there were many posts about bugs inside vtkImageViewer2 when using wxWidget -

http://public.kitware.com/pipermail/vtkusers/2003-September/069419.html   

  Is this problem fixed? I am using VTK version 5.2.

  Any suggestions will be helpful, thanks.

Suyang



      
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