Visualization

Greetings,

I'm trying to visualize a BSpline I've generated using OCCT. 

My code is:

/// Displaying OCCT BSpline

    std::string fileName="AH82150F_processed.dat";

    Standard_Integer num_coordinates = 97; // Number of coordinates

    Hydrofoil f(fileName, num_coordinates, 5, CLOCKWISE_LE);

    TopoDS_Edge bspline = BRepBuilderAPI_MakeEdge(f.getCurve());

    Handle(AIS_Shape) anEdge = new AIS_Shape(bspline);

    anEdge->SetColor(Quantity_NOC_RED);

    

    

    const TCollection_AsciiString displayName("m:0.0");

    Standard_ExtString dname= 0;

    const Handle(Aspect_DisplayConnection) aDisplayConnection = new Aspect_DisplayConnection();

    

    Handle(Graphic3d_GraphicDriver) driver3d = new OpenGl_GraphicDriver(aDisplayConnection);

    Handle(V3d_Viewer) viewer; // = new V3d_Viewer(driver3d, dname);

    Handle(V3d_View) view;

    

    // Create V3dViewer and V3d_View

    viewer = new V3d_Viewer(driver3d, (short* const)"viewer");

    view = viewer->CreateView();

    

    // Create AISInteractiveContext

    Handle(AIS_InteractiveContext) aContext = new AIS_InteractiveContext(viewer);

    aContext = new AIS_InteractiveContext(viewer);

    

    // Set up lights etc

    viewer->SetDefaultLights();

    viewer->SetLightOn();

    

    // view->SetBackgroundColor(Quantity_NOC_BLACK);

    // view->MustBeResized();

    // view->TriedronDisplay(Aspect_TOTP_LEFT_LOWER, Quantity_NOC_GOLD, 0.08, V3d_ZBUFFER);

    

    

    // Handle(V3d_Viewer) aViewer = ...;

    aContext -> Display(anEdge);

    //Display the presentable  object in the 3d viewer.

 

This does not create a window or widget to display. Could anybody kindly provide sample code which'll help me build a simple visualiser for the geometries I build. It should allow for viewing in different planes and rotation. Your help would be much appreciated.