<div dir="ltr"><div>Hi vtk users,<br><br></div>Has any of you experienced problems when trying to register the interaction event into a vtkImplicitPlaneWidget2 observer in an application with PyQt4? <br clear="all"><div><div><br></div><div>I can successfully register the event out of PyQt4 app. However, when I am trying to get vtkImplicitPlaneWidget2 to my PyQt4 application, the AddObserver is not registered. The widget is properly displayed but I cannot access the interaction mode. Thus, when I am moving the object, the widget disappears. <br><br></div><div>In particular, I am trying to clip an unstructured grid and my clip method looks like the following:<br><br>        plane = vtkPlane()<br>        plane.SetOrigin(0.0, 0.0, 0.0)    <br>        <br>        clipData = vtkClipDataSet()<br>        clipData.SetInputData(actUG)<br>        clipData.SetClipFunction(plane)<br>        clipData.InsideOutOn()<br>        clipData.Update()<br>        <br>        clipMapper = vtkDataSetMapper()<br>        clipMapper.ImmediateModeRenderingOn()<br>        clipMapper.SetInputData(clipData.GetOutput())<br>        <br>        clipActor = vtkLODActor()<br>        clipActor.SetMapper(clipMapper)<br>        clipActor.VisibilityOn()<br>        clipActor.SetScale(1.01, 1.01, 1.01)<br>        <br></div><div>        # the following is my QWidget which contains the QVTKRenderWindowInteractor<br></div><div>        self.formWidgetC.iren.SetRenderWindow(self.formWidgetC.vtkWidget.GetRenderWindow())<br>#        backFaces = vtkProperty()<br>#        backFaces.SetDiffuseColor(0.8, 0.8, 0.4)<br>#        clipActor.SetBackfaceProperty(backFaces)<br>        def callback(pw, event):<br>            print("triggered")<br>            pw.GetRepresentation().GetPlane(plane)<br>            clipActor.VisibilityOn()<br><br>        rep = vtkImplicitPlaneRepresentation()<br>        rep.SetPlaceFactor(1.25)<br>        rep.PlaceWidget(actUG.GetBounds())<br>        rep.SetNormal(plane.GetNormal())<br>        rep.VisibilityOn()<br>        rep.GetPlane(plane)<br>        <br>        planeWidget = vtkImplicitPlaneWidget2()<br>        planeWidget.SetInteractor(self.formWidgetC.iren)<br>        planeWidget.SetRepresentation(rep) <br>        planeWidget.SetEnabled(1)<br>#        planeWidget.On() <br>#        planeWidget.SetInputData(actUG)<br>#        planeWidget.Set<br>#        planeWidget.PlaceWidget()<br>        planeWidget.AddObserver("InteractionEvent", callback)<br>        planeWidget.On()<br>        self.formWidgetC.ren.AddActor(clipActor)<br>      <br>#        self.formWidgetC.iren.Initialize()<br>        self.formWidgetC.iren.Render()<br>#        self.formWidgetC.iren.Start()<br><br>#        self.formWidgetC.vtkWidget.GetRenderWindow().GetInteractor().Render()<br></div><div><br><br></div><div>Any help would be much appreciated.<br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><br></div><div>Giorgos<br></div><div><br></div><br></div></div></div></div>
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