[vtkusers] Contourf plot with dynamic resize

[Mattia M]

Hi to all, this is my first post in the mailing list. I'm trying to develop a plot application thant is able to create the controuf similar to matlab https://it.mathworks.com/help/matlab/ref/contourf.html <https://it.mathworks.com/help/matlab/ref/contourf.html>

I succeed in creating something like it but my actual issues are place the plot in the center and resize dynamically with the window. This is the code that I'm using so far:


void CreateBaseData(vtkImageData* image)

{



    datastructure * dataInput = new datastructure(FILEPATH);



    image->SetDimensions(dataInput->shape()->Xsize, dataInput->shape()->Ysize, 1);

//    image->SetSpacing(dataInput->shape()->Xres,dataInput->shape()->Yres,0);



//    image->SetOrigin(dataInput->shape()->Xmin,dataInput->shape()->Ymin,0);



    image->AllocateScalars(VTK_DOUBLE,1);



    for(unsigned int x = 0; x <  dataInput->shape()->Xsize; x++)

    {

        for(unsigned int y = 0; y < dataInput->shape()->Ysize; y++)

        {

            double* pixel = static_cast<double *>(image->GetScalarPointer(x,y,0));

            pixel[0] = dataInput->z[y][x];

        }

    }

    delete dataInput;



    //image->Modified();

}



void RenderWindowUISingleInheritance::ModifiedHandler()

{

    ui->qvtkWidget->GetRenderWindow()->Render();

}





// Constructor

RenderWindowUISingleInheritance::RenderWindowUISingleInheritance(QWidget *parent) :

    QMainWindow(parent),

    ui(new Ui::RenderWindowUISingleInheritanceUI)

{

    ui->setupUi(this);



    vtkSmartPointer<vtkInteractorStyleImage> style = vtkSmartPointer<vtkInteractorStyleImage>::New();



    ui->qvtkWidget->GetRenderWindow()->GetInteractor()->SetInteractorStyle(style);



    int numberOfContours = 15;



    double scalarRange[2];



    float levels[] = { 0.4, 1.0, 2.0, 4, 10.0, 20.0, 40, 100, 200, 400, 1000, 2000, 4000, 10000, 20000, 40000 };



    vtkSmartPointer<vtkImageData> colorImage = vtkSmartPointer<vtkImageData>::New();

    vtkSmartPointer<vtkLookupTable> lut = vtkSmartPointer<vtkLookupTable>::New();

    vtkSmartPointer<vtkImageDataGeometryFilter> convert = vtkSmartPointer<vtkImageDataGeometryFilter>::New();

    vtkSmartPointer<vtkBandedPolyDataContourFilter> bf = vtkSmartPointer<vtkBandedPolyDataContourFilter>::New();

    vtkSmartPointer<vtkPolyDataMapper2D> filledContourMapper = vtkSmartPointer<vtkPolyDataMapper2D>::New();

    vtkSmartPointer<vtkPolyDataMapper2D> contourLineMapperer =vtkSmartPointer<vtkPolyDataMapper2D>::New();



    vtkSmartPointer<vtkRenderer> ren1 = vtkSmartPointer<vtkRenderer>::New();



    vtkSmartPointer<vtkActor2D> filledContourActor =vtkSmartPointer<vtkActor2D>::New();

    vtkSmartPointer<vtkActor2D> contourLineActor = vtkSmartPointer<vtkActor2D>::New();

    vtkSmartPointer<vtkCubeAxesActor> cubeAxesActor = vtkSmartPointer<vtkCubeAxesActor>::New();

    vtkSmartPointer<vtkScalarBarActor> scalarBarActor =vtkSmartPointer<vtkScalarBarActor>::New();

    CreateBaseData(colorImage);



    colorImage->GetScalarRange(scalarRange);



    int l_min;

    int l_max;

    for (l_min=numberOfContours-1;l_min>=0;l_min--) {

        if (levels[l_min] <= scalarRange[0]) break;

    }



    for (l_max=0;l_max<numberOfContours;l_max++) {



        if (levels[l_max] > scalarRange[1]) break;

    }

    numberOfContours = l_max - l_min;



//    colormap::setColorMap(lut,1,1);



    char label[10];

    for (vtkIdType i = l_min; i < numberOfContours+1; ++i)

    {

        //std::cout << lut->GetAnnotatedValue(i).ToString() << std::endl;



        sprintf(label,"%4.2f",levels[i]);

        lut->SetAnnotation(i, label);

    }



    convert->SetInputData(colorImage);

    bf->SetInputConnection(convert->GetOutputPort());

    bf->SetNumberOfContours(numberOfContours);

    for (int i=l_min;i<l_max;i++){



        bf->SetValue(i,levels[i]);

    }



    bf->GenerateContourEdgesOn();



    filledContourMapper->SetInputConnection(bf->GetOutputPort());

    filledContourMapper->SetScalarModeToUseCellData();

    //    filledContourMapper->SetColorModeToMapScalars();

    filledContourMapper->SetScalarRange(0,numberOfContours);

    filledContourMapper->SetLookupTable(lut);



    filledContourActor->SetMapper(filledContourMapper);

    filledContourActor->PickableOn();

    filledContourActor->GetPosition2Coordinate()->SetValue(0.17, 0.8);

    filledContourActor->GetPositionCoordinate()->SetCoordinateSystemToNormalizedViewport();

    filledContourActor->GetPositionCoordinate()->SetValue(0.82, 0.1);


    filledContourActor->SetWidth( 0.7 );

    filledContourActor->SetHeight( 0.1 );

    filledContourActor->SetPosition( 0.1, 0.01 );


    contourLineMapperer->SetInputData(bf->GetContourEdgesOutput());


    contourLineMapperer->ScalarVisibilityOn();


    contourLineActor->SetMapper(contourLineMapperer);

    contourLineActor->GetProperty()->SetLineWidth(0.5);

    contourLineActor->GetProperty()->SetColor(0., 0., 0.);


    scalarBarActor->SetLookupTable(filledContourMapper->GetLookupTable());

    scalarBarActor->SetNumberOfLabels(numberOfContours);

    scalarBarActor->SetOrientationToHorizontal();

    scalarBarActor->SetPosition(0.05,0.2);

    scalarBarActor->SetWidth(0.9);

    scalarBarActor->SetHeight(0.05);



    scalarBarActor->SetDrawTickLabels(0);

    scalarBarActor->SetDrawAnnotations(1);

    scalarBarActor->GetAnnotationTextProperty()->SetFontFamilyToCourier();

    //scalarBar->GetAnnotationTextProperty()->SetVerticalJustificationToCentered();

    scalarBarActor->GetAnnotationTextProperty()->BoldOff();

    scalarBarActor->GetAnnotationTextProperty()->ItalicOff();

    scalarBarActor->GetAnnotationTextProperty()->ShadowOff() ;

    scalarBarActor->GetAnnotationTextProperty()->SetColor(0, 0, 0);

    scalarBarActor->GetAnnotationTextProperty()->SetJustificationToRight();


    scalarBarActor->SetUseBounds(true);


//    cubeAxesActor->SetBounds(filledContourMapper->GetBounds());

    cubeAxesActor->SetCamera(ren1->GetActiveCamera());

    cubeAxesActor->GetTitleTextProperty(0)->SetColor(0.0, 0.0, 0.0);

    cubeAxesActor->GetLabelTextProperty(0)->SetColor(0.0, 0.0, 0.0);

    cubeAxesActor->GetTitleTextProperty(1)->SetColor(0.0, 0.0, 0.0);

    cubeAxesActor->GetLabelTextProperty(1)->SetColor(0.0, 0.0, 0.0);

    cubeAxesActor->DrawXGridlinesOn();

    cubeAxesActor->DrawYGridlinesOn();

    cubeAxesActor->DrawZGridlinesOff();

    cubeAxesActor->GetXAxesLinesProperty()->SetColor(0.0, 0.0,0.0);

    cubeAxesActor->GetYAxesLinesProperty()->SetColor(0.0, 0.0,0.0);

    cubeAxesActor->GetYAxesGridlinesProperty ()->SetColor(0,0,0);

    cubeAxesActor->GetXAxesGridlinesProperty ()->SetColor(0,0,0);



    cubeAxesActor->SetTickLocationToOutside();

    //    cubeAxesActor->SetGridLineLocation(cubeAxesActor->VTK_GRID_LINES_CLOSEST);

    ren1->SetBackground(1, 1, 1);

    // Add the actors

    ren1->AddActor(filledContourActor);
    ren1->AddActor(contourLineActor);
    ren1->AddActor(scalarBarActor);

//    ren1->AddActor(cubeAxesActor);
    ren1->ResetCamera();
    // VTK/Qt wedded
    ui->qvtkWidget->GetRenderWindow()->AddRenderer(ren1);

    ui->qvtkWidget->GetRenderWindow()->AddObserver(vtkCommand::ModifiedEvent,this,&RenderWindowUISingleInheritance::ModifiedHandler);

    // Set up action signals and slots

    connect(ui->actionExit, SIGNAL(triggered()), this, SLOT(slotExit()));

}



void RenderWindowUISingleInheritance::slotExit() 

{

    qApp->exit();

}



RenderWindowUISingleInheritance::~RenderWindowUISingleInheritance() {

    delete ui;

};

Do you have any suggestion?

Thanks

Mattia

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