[vtkusers] QVTKRenderWindowInteractor problem

[Baliki baliki]

You should set an appropriate interactor style (e.g.
vtkInteractorStyleTrackballCamera).


2009/11/17 KS Jothybasu <jothybasu at gmail.com>

> 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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