/////////////////////////////////////////////////////////////////////////////////////////////////////
        // OBJECT
        /////////////////////////////////////////////////////////////////////////////////////////////////////
        /// <summary>
        /// Initializes a new instance of the <see cref="TextDocumentItemViewModel"/> class.
        /// </summary>
        public VTKDocumentItemViewModel(VTKDataModel dataModel)
        {
            this.Title = string.Format("VTK Doc {0}", counter++);
            this.Text = string.Format("Dynamically created at {0}", DateTime.Now);
            this.Description = "VTK document";
            this.vtkData = dataModel;

            this.CellAttributeArrayNames = new ObservableCollection<string>();
            this.CellAttributeArrayNames.Add(this.vtkData.CellIdsArrayName);
            this.CellAttributeArrayNames.Add(this.vtkData.CellTypeArrayName);
            this.cellColorArrayName = this.CellAttributeArrayNames[0];
            this.cellColorMapSpaceModel = ColorSpaceModel.HSV;

            // create a VTK output control and make the forms host point to it
            rwc = new RenderWindowControl();
            wfh = new WindowsFormsHost();
            wfh.Child = rwc;
            rwc.CreateGraphics();
            rwc.RenderWindow.SetCurrentCursor(9);

            vtkInteractorStyleSwitch istyle = vtkInteractorStyleSwitch.New();
            rwc.RenderWindow.GetInteractor().SetInteractorStyle(istyle);
            rwc.RenderWindow.GetInteractor().SetPicker(vtkCellPicker.New());
            (istyle).SetCurrentStyleToTrackballCamera();

            rwc.RenderWindow.GetInteractor().LeftButtonPressEvt += new vtkObject.vtkObjectEventHandler(leftMouseDown);

            // set up basic viewing
            ren = rwc.RenderWindow.GetRenderers().GetFirstRenderer();
            vtkCamera camera = ren.GetActiveCamera();

            // background color
            ren.SetBackground(0.1, 0.1, 0.1);

            vtkSphereSource sph = vtkSphereSource.New();
            sph.SetThetaResolution(16);
            sph.SetPhiResolution(16);
            sph.SetRadius(0.02);

            vtkGlyph3D glyp = vtkGlyph3D.New();
            glyp.SetSourceConnection(sph.GetOutputPort(0));
            glyp.SetInputConnection(this.vtkData.OutputPort);
            glyp.ScalingOff();
            glyp.OrientOff();

            ctf = vtkColorTransferFunction.New();
            ctf_min_color = System.Windows.Media.Color.FromRgb(0, 128, 255);
            ctf_max_color = System.Windows.Media.Color.FromRgb(64, 255, 64);
            this.BuildCTF();

            //lut.SetValueRange(0.5, 1.0);
            //lut.SetSaturationRange(0.1, 1.0);
            //lut.SetHueRange(0.4, 0.6);
            //lut.SetAlphaRange(0.2, 1.0);
            //lut.SetRampToLinear();
            //lut.Build();

            mapper = vtkPolyDataMapper.New();
            mapper.SetInputConnection(glyp.GetOutputPort());
            mapper.SetLookupTable(ctf);
            mapper.ScalarVisibilityOn();
            mapper.SetScalarModeToUsePointFieldData();
            mapper.SelectColorArray(this.cellColorArrayName);
            // scalar range doens't affect anything when using a ctf (instead of a lut)
            // mapper.SetScalarRange(0, this.vtkData.NumPoints - 1);

            vtkActor actor = vtkActor.New();
            actor.SetMapper(mapper);
            //actor.GetProperty().SetRepresentationToWireframe();
            actor.GetProperty().SetRepresentationToSurface();
            rwc.RenderWindow.GetRenderers().GetFirstRenderer().AddViewProp(actor);
            ren.ResetCamera();
        }
    /// <summary>
    /// The main entry method called by the CSharp driver
    /// </summary>
    /// <param name="argv"></param>
    public static void AVTestMultiBlockStreamer(String [] argv)
    {
        //Prefix Content is: ""

          // we need to use composite data pipeline with multiblock datasets[]
          alg = new vtkAlgorithm();
          pip = new vtkCompositeDataPipeline();
          vtkAlgorithm.SetDefaultExecutivePrototype((vtkExecutive)pip);
          //skipping Delete pip
          Ren1 = vtkRenderer.New();
          Ren1.SetBackground((double)0.33,(double)0.35,(double)0.43);

          renWin = vtkRenderWindow.New();
          renWin.AddRenderer((vtkRenderer)Ren1);

          iren = new vtkRenderWindowInteractor();
          iren.SetRenderWindow((vtkRenderWindow)renWin);

          Plot3D0 = new vtkPLOT3DReader();
          Plot3D0.SetFileName((string)"" + (VTK_DATA_ROOT.ToString()) + "/Data/combxyz.bin");
          Plot3D0.SetQFileName((string)"" + (VTK_DATA_ROOT.ToString()) + "/Data/combq.bin");
          Plot3D0.SetBinaryFile((int)1);
          Plot3D0.SetMultiGrid((int)0);
          Plot3D0.SetHasByteCount((int)0);
          Plot3D0.SetIBlanking((int)0);
          Plot3D0.SetTwoDimensionalGeometry((int)0);
          Plot3D0.SetForceRead((int)0);
          Plot3D0.SetByteOrder((int)0);

          Geometry5 = new vtkStructuredGridOutlineFilter();
          Geometry5.SetInputConnection((vtkAlgorithmOutput)Plot3D0.GetOutputPort());

          Mapper5 = vtkPolyDataMapper.New();
          Mapper5.SetInputConnection((vtkAlgorithmOutput)Geometry5.GetOutputPort());
          Mapper5.SetImmediateModeRendering((int)1);
          Mapper5.UseLookupTableScalarRangeOn();
          Mapper5.SetScalarVisibility((int)0);
          Mapper5.SetScalarModeToDefault();

          Actor5 = new vtkActor();
          Actor5.SetMapper((vtkMapper)Mapper5);
          Actor5.GetProperty().SetRepresentationToSurface();
          Actor5.GetProperty().SetInterpolationToGouraud();
          Actor5.GetProperty().SetAmbient((double)0.15);
          Actor5.GetProperty().SetDiffuse((double)0.85);
          Actor5.GetProperty().SetSpecular((double)0.1);
          Actor5.GetProperty().SetSpecularPower((double)100);
          Actor5.GetProperty().SetSpecularColor((double)1,(double)1,(double)1);

          Actor5.GetProperty().SetColor((double)1,(double)1,(double)1);
          Ren1.AddActor((vtkProp)Actor5);

          ExtractGrid[0] = new vtkExtractGrid();
          ExtractGrid[0].SetInputConnection((vtkAlgorithmOutput)Plot3D0.GetOutputPort());
          ExtractGrid[0].SetVOI((int)0,(int)14,(int)0,(int)32,(int)0,(int)24);
          ExtractGrid[0].SetSampleRate((int)1,(int)1,(int)1);
          ExtractGrid[0].SetIncludeBoundary((int)0);

          ExtractGrid[1] = new vtkExtractGrid();
          ExtractGrid[1].SetInputConnection((vtkAlgorithmOutput)Plot3D0.GetOutputPort());
          ExtractGrid[1].SetVOI((int)14,(int)29,(int)0,(int)32,(int)0,(int)24);
          ExtractGrid[1].SetSampleRate((int)1,(int)1,(int)1);
          ExtractGrid[1].SetIncludeBoundary((int)0);

          ExtractGrid[2] = new vtkExtractGrid();
          ExtractGrid[2].SetInputConnection((vtkAlgorithmOutput)Plot3D0.GetOutputPort());
          ExtractGrid[2].SetVOI((int)29,(int)56,(int)0,(int)32,(int)0,(int)24);
          ExtractGrid[2].SetSampleRate((int)1,(int)1,(int)1);
          ExtractGrid[2].SetIncludeBoundary((int)0);

          LineSourceWidget0 = new vtkLineSource();
          LineSourceWidget0.SetPoint1((double)3.05638,(double)-3.00497,(double)28.2211);
          LineSourceWidget0.SetPoint2((double)3.05638,(double)3.95916,(double)28.2211);
          LineSourceWidget0.SetResolution((int)20);

          mbds = new vtkMultiBlockDataSet();
          mbds.SetNumberOfBlocks((uint)3);
          i = 0;
          while((i) < 3)
        {
          ExtractGrid[i].Update();
          sg[i] = vtkStructuredGrid.New();
          sg[i].ShallowCopy(ExtractGrid[i].GetOutput());
          mbds.SetBlock((uint)i, sg[i]);
          //skipping Delete sg[i]
          i = i + 1;
        }

          Stream0 = new vtkStreamTracer();
          Stream0.SetInput((vtkDataObject)mbds);
          Stream0.SetSource((vtkDataSet)LineSourceWidget0.GetOutput());
          Stream0.SetIntegrationStepUnit(2);
          Stream0.SetMaximumPropagation((double)20);
          Stream0.SetInitialIntegrationStep((double)0.5);
          Stream0.SetIntegrationDirection((int)0);
          Stream0.SetIntegratorType((int)0);
          Stream0.SetMaximumNumberOfSteps((int)2000);
          Stream0.SetTerminalSpeed((double)1e-12);

          //skipping Delete mbds

          aa = new vtkAssignAttribute();
          aa.SetInputConnection((vtkAlgorithmOutput)Stream0.GetOutputPort());
          aa.Assign((string)"Normals",(string)"NORMALS",(string)"POINT_DATA");

          Ribbon0 = new vtkRibbonFilter();
          Ribbon0.SetInputConnection((vtkAlgorithmOutput)aa.GetOutputPort());
          Ribbon0.SetWidth((double)0.1);
          Ribbon0.SetAngle((double)0);
          Ribbon0.SetDefaultNormal((double)0,(double)0,(double)1);
          Ribbon0.SetVaryWidth((int)0);

          LookupTable1 = new vtkLookupTable();
          LookupTable1.SetNumberOfTableValues((int)256);
          LookupTable1.SetHueRange((double)0,(double)0.66667);
          LookupTable1.SetSaturationRange((double)1,(double)1);
          LookupTable1.SetValueRange((double)1,(double)1);
          LookupTable1.SetTableRange((double)0.197813,(double)0.710419);
          LookupTable1.SetVectorComponent((int)0);
          LookupTable1.Build();

          Mapper10 = vtkPolyDataMapper.New();
          Mapper10.SetInputConnection((vtkAlgorithmOutput)Ribbon0.GetOutputPort());
          Mapper10.SetImmediateModeRendering((int)1);
          Mapper10.UseLookupTableScalarRangeOn();
          Mapper10.SetScalarVisibility((int)1);
          Mapper10.SetScalarModeToUsePointFieldData();
          Mapper10.SelectColorArray((string)"Density");
          Mapper10.SetLookupTable((vtkScalarsToColors)LookupTable1);

          Actor10 = new vtkActor();
          Actor10.SetMapper((vtkMapper)Mapper10);
          Actor10.GetProperty().SetRepresentationToSurface();
          Actor10.GetProperty().SetInterpolationToGouraud();
          Actor10.GetProperty().SetAmbient((double)0.15);
          Actor10.GetProperty().SetDiffuse((double)0.85);
          Actor10.GetProperty().SetSpecular((double)0);
          Actor10.GetProperty().SetSpecularPower((double)1);
          Actor10.GetProperty().SetSpecularColor((double)1,(double)1,(double)1);
          Ren1.AddActor((vtkProp)Actor10);

          // enable user interface interactor[]
          iren.Initialize();
          // prevent the tk window from showing up then start the event loop[]
          vtkAlgorithm.SetDefaultExecutivePrototype(null);
          //skipping Delete alg

        //deleteAllVTKObjects();
    }