[vtkusers] vtkImageViewer2::Render

[Mathieu Malaterre]

Hi all,

	I am using vtkImageViewer2, but I find something a bit annoying.
In vtkImageViewer2::Render, line 256, there is this code:


256:     this->Renderer->GetActiveCamera()->ParallelProjectionOn();


	as a result if you zoom or pan with the mouse and *then* play with 
windowlevel event, you loose your zooming and panning.

	Furthermore there doesn't seems to be such code in 
vtkImageViewer::Render. Is there any reason why it is there ? Otherwise 
could someone just remove it, thanks.

	Here is a sample python code that reproduce the problem:

################################
#Play first with the middle or right button
#then play with the left button
import vtk
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()

reader = vtk.vtkPNGReader ()
reader.SetDataSpacing (0.8, 0.8, 1.5)
reader.SetFileName ( VTK_DATA_ROOT + "/Data/fullhead15.png")

iren = vtk.vtkRenderWindowInteractor()
viewer = vtk.vtkImageViewer2()
viewer.SetInput ( reader.GetOutput() )
viewer.SetupInteractor (iren)

iren.Initialize()
iren.Start()
##################################

Thanks,
mathieu

-- 
Mathieu Malaterre
CREATIS
28 Avenue du Doyen LEPINE
B.P. Lyon-Montchat
69394 Lyon Cedex 03
http://www.creatis.insa-lyon.fr/~malaterre/