[vtkusers] Qt & VTK 2d plotting

[Clinton Stimpson]

Interaction is handled by the interactor style classes.
http://www.vtk.org/doc/nightly/html/classvtkInteractorStyle.html

You can use an existing style, or make your own and give it to the 
interactor.

Clint

Justin Giles wrote:
> I am able to create a 2d plot using a QVTKWidget, however I am unable 
> to interact with that plot.  I pretty much new to VTK, so I am kind of 
> at a loss as to how to connect the vtk interactors and Qt.  I have 
> poked around a bit and noticed a QVTKInteractor class, but anything I 
> do with that results in my 2d plot going away to be replaced with a 
> blank white area.  Below is the code that I am using.  Just as a note, 
> this is being done in a class that extends a QMainWindow.
>
> //snippet//
>
>
>     view = new QVTKWidget;
>     setCentralWidget(view);
>
>     int DIM = 500;
>     vtkDataArray *dataArray1 = vtkDataArray::CreateDataArray(VTK_FLOAT);
>     dataArray1->SetNumberOfTuples(DIM);
>
>     vtkDataArray *dataArray2 = vtkDataArray::CreateDataArray(VTK_FLOAT);
>     dataArray2->SetNumberOfTuples(DIM);
>
>     int t;
>     for (t = 0; t < DIM; t++)
>     {
>         float x = t;
>         float y = vtkMath::Random(0.0f,1.0f);
>         dataArray1->SetTuple(t, &x);
>         dataArray2->SetTuple(t, &y);
>     }
>
>     vtkFieldData *fieldData = vtkFieldData::New();
>     fieldData->AllocateArrays(2);
>     fieldData->AddArray(dataArray1);
>     fieldData->AddArray(dataArray2);
>
>     vtkDataObject *dataObject = vtkDataObject::New();
>     dataObject->SetFieldData(fieldData);
>
>     vtkXYPlotActor *plot = vtkXYPlotActor::New();
>     plot->AddDataObjectInput(dataObject);
>     plot->SetTitle("Plot");
>     plot->SetXTitle("X-Axis");
>     plot->SetYTitle("Y-Axis");
>     plot->SetXValuesToValue();
>     plot->SetWidth(0.9);
>     plot->SetHeight(0.9);
>     plot->SetPosition(0.05, 0.05);
>     plot->LegendOn();
>     plot->PickableOff();
>     plot->PlotCurvePointsOn();
>     plot->PlotCurveLinesOff();
>
>     plot->SetDataObjectXComponent(0, 0);
>     plot->SetDataObjectYComponent(0, 1);
>     plot->SetPlotColor(0, 1.0, 0.0, 0.0);
>     plot->SetPlotLabel(0, "My Label");
>     //plot->GetProperty()->SetColor(0.0, 0.0, 0.0);
>
>     vtkRenderer *renderer = vtkRenderer::New();
>     renderer->SetBackground(0, 0, 0);
>     renderer->AddActor2D(plot);
>
>     vtkRenderWindow *renderWindow = vtkRenderWindow::New();
>     renderWindow->SetSize(550, 450);
>     renderWindow->AddRenderer(renderer);
> //    vtkRenderWindowInteractor* inter = QVTKInteractor::New();
> //    renderWindow->SetInteractor(inter);
>     view->SetRenderWindow(renderWindow);
>
> //end-snippet//
> ------------------------------------------------------------------------
>
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