[vtkusers] no zooming with vtkImageViewer

[Roelof Kemp]

Hi all,

I've a small code example. Would anyone please have a look at it and 
help me? I've troubles with interacting with an image. I made the code 
example as basic as possible (it is Java but that shouldn't be a problem 
I hope...). Are there any  errors in the sequence of the my calls? Do I 
miss any calls? Should I use other calls / objects instead 
(vtkImageViewer2?)? I'd like just to zoom/pan/rotate the image.

Thanks in advance,

Roelof

---code---

vtkImageData imageData = new vtkImageData();
/* read data, set dimensions etc. */

vtkImageMapToRGBA map = new vtkImageMapToRGBA();
map.SetInput(imageData);
map.SetLookupTable(lut); /* lut already created */

vtkRenderWindowInteractor iren = new vtkRenderWindowInteractor();

vtkImageViewer viewer = new vtkImageViewer();
viewer.SetupInteractor(iren);
iren.SetRenderWindow(viewer.GetRenderWindow());
viewer.SetInput(map.GetOutput());

/* set viewer's color window and color level, position and size */

viewer.Render();
iren.Initialize();
iren.Start();