[vtkusers] Qt & VTK 2d plotting

[Justin Giles]

That didn't seem to work either.  I'm trying to view a xy plot.

Justin

On Mon, Feb 23, 2009 at 1:05 PM, Clinton Stimpson <clinton at elemtech.com>wrote:

>
> Maybe you're just missing a
> renderer->ResetCamera();
>
> If you're just viewing an image, have a look at the image viewer example in
> VTK/Examples/GUI/Qt/ImageViewer
>
> Clint
>
> Justin Giles wrote:
>
>> Ok, I added a style to my interactor in the following way:
>>
>> //code
>>    vtkRenderWindow *renderWindow = vtkRenderWindow::New();
>>    renderWindow->SetSize(550, 450);
>>    renderWindow->AddRenderer(renderer);
>>    vtkRenderWindowInteractor* inter = QVTKInteractor::New();
>>    renderWindow->SetInteractor(inter);
>>    vtkInteractorStyleImage* interstyle = vtkInteractorStyleImage::New();
>>    inter->SetInteractorStyle(interstyle);
>>    view->SetRenderWindow(renderWindow);
>> //end code
>>
>> (where view = QVTKWidget)
>>
>> And, I still get the same results.  Instead of a nice plot, I just get a
>> blank white screen.  Thoughts?  Am I doing something wrong?
>>
>> Thanks,
>>
>> Justin
>>
>> On Mon, Feb 23, 2009 at 11:20 AM, Clinton Stimpson <clinton at elemtech.com<mailto:
>> clinton at elemtech.com>> wrote:
>>
>>
>>    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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>>
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>>
>
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