[PyQt] QVTKRenderWindowInteractor problem

[KS Jothybasu]

Hi,

I am tryinf to render a 3d Image using vtkImagePlaneWidget to show 3
orthogonal planes, it works perfectly with vtkRenderWindowInteractor but
when I try to embed into a PyQt application with QVTKRenderWindowInteractor
,the mouse interactions doesn't work properly(like window level
change,slicing ..), it only rotates and some of the keypress events work.

Here is a the simple code!

*import vtk

def Show3DPlanes(img_data,renWin):
# renWin is actually a QVTKRenderWindowInteractor

               # An outline is shown for context.
    outline = vtk.vtkOutlineFilter()
    outline.SetInput(img_data)

    outlineMapper = vtk.vtkPolyDataMapper()
    outlineMapper.SetInputConnection(outline.GetOutputPort())

    outlineActor = vtk.vtkActor()
    outlineActor.SetMapper(outlineMapper)

            # The shared picker enables us to use 3 planes at one time
            # and gets the picking order right
    picker = vtk.vtkCellPicker()
    picker.SetTolerance(0.005)

            # The 3 image plane widgets are used to probe the dataset.
    planeWidgetX = vtk.vtkImagePlaneWidget()
    planeWidgetX.DisplayTextOn()
    planeWidgetX.SetInput(img_data)
    planeWidgetX.SetPlaneOrientationToXAxes()
    planeWidgetX.SetSliceIndex(200)
    planeWidgetX.SetPicker(picker)
    planeWidgetX.SetKeyPressActivationValue("x")
    prop1 = planeWidgetX.GetPlaneProperty()
    prop1.SetColor(1, 0, 0)

    planeWidgetY = vtk.vtkImagePlaneWidget()
    planeWidgetY.DisplayTextOn()
    planeWidgetY.SetInput(img_data)
    planeWidgetY.SetPlaneOrientationToYAxes()
    planeWidgetY.SetSliceIndex(255)
    planeWidgetY.SetPicker(picker)
    planeWidgetY.SetKeyPressActivationValue("y")
    prop2 = planeWidgetY.GetPlaneProperty()
    prop2.SetColor(1, 1, 0)
    planeWidgetY.SetLookupTable(planeWidgetX.GetLookupTable())

            # for the z-slice, turn off texture interpolation:
            # interpolation is now nearest neighbour, to demonstrate
            # cross-hair cursor snapping to pixel centers
    planeWidgetZ = vtk.vtkImagePlaneWidget()
    planeWidgetZ.DisplayTextOn()
    planeWidgetZ.SetInput(img_data)
    planeWidgetZ.SetPlaneOrientationToZAxes()
    planeWidgetZ.SetSliceIndex(15)
    planeWidgetZ.SetPicker(picker)
    planeWidgetZ.SetKeyPressActivationValue("z")
    prop3 = planeWidgetZ.GetPlaneProperty()
    prop3.SetColor(0, 0, 1)
    planeWidgetZ.SetLookupTable(planeWidgetX.GetLookupTable())

            # Create the RenderWindow and Renderer
    ren = vtk.vtkRenderer()
    renWin.GetRenderWindow().AddRenderer(ren)
    Win=renWin.GetRenderWindow()


            # Add the outline actor to the renderer, set the background
            # color and size
    ren.AddActor(outlineActor)
    #renWin.SetSize(432,361)
    ren.SetBackground(0, 0, 0)

    current_widget = planeWidgetZ
    mode_widget = planeWidgetZ

            # Set the interactor for the widgets
    iact = vtk.vtkRenderWindowInteractor()
    iact.SetRenderWindow(Win)
    planeWidgetX.SetInteractor(iact)
    planeWidgetX.On()
    planeWidgetY.SetInteractor(iact)
    planeWidgetY.On()
    planeWidgetZ.SetInteractor(iact)
    planeWidgetZ.On()

            # Create an initial interesting view
    ren.ResetCamera();
    cam1 = ren.GetActiveCamera()
    cam1.Elevation(110)
    cam1.SetViewUp(0, 0, -1)
    cam1.Azimuth(0)
    ren.ResetCameraClippingRange()

    iact.Initialize()
    renWin.show()
    iact.Start()*


Could anybody please help me?

Thanks
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