[wxVTK] vtkImageViewer2

[Suyang M. <suy...@ya...>]

Hi, all -

  I am new to wxVTK even VTK world.
  
 
I
need to implement a 2D slicer to display 2D slices from a 3D volume by
using wxWidget, python & VTK. By searching the web, I am planning
to use vtkImageViewer2 to implement it, is this a good choice? any
suggestion? 

   Here is the sample codes I am
working on (I use a 2D slice to start with, the 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, wxPython 2.8.9.1, and I am in linux.

  Any suggestions will be helpful, thanks.

Suyang