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using Kitware.VTK;
using System;
/// <summary>
/// Class Containing Main Method
/// </summary>
public class StreamlinesWithLineWidgetClass
{
/// <summary>
/// Entry Point
/// </summary>
/// <param name="argv"></param>
public static void Main(String[] argv)
{
// This example demonstrates how to use the vtkLineWidget to seed
// and manipulate streamlines. Two line widgets are created. One is
// invoked by pressing 'W', the other by pressing 'L'. Both can exist
// together.
// Start by loading some data.
pl3d = vtkPLOT3DReader.New();
pl3d.SetXYZFileName("../../../combxyz.bin");
pl3d.SetQFileName("../../../combq.bin");
pl3d.SetScalarFunctionNumber(100);
pl3d.SetVectorFunctionNumber(202);
pl3d.Update();
// The line widget is used seed the streamlines.
lineWidget = vtkLineWidget.New();
seeds = vtkPolyData.New();
lineWidget.SetInput(pl3d.GetOutput());
lineWidget.SetAlignToYAxis();
lineWidget.PlaceWidget();
lineWidget.GetPolyData(seeds);
lineWidget.ClampToBoundsOn();
rk4 = vtkRungeKutta4.New();
streamer = vtkStreamLine.New();
streamer.SetInputConnection(pl3d.GetOutputPort());
streamer.SetSource(seeds);
streamer.SetMaximumPropagationTime(100);
streamer.SetIntegrationStepLength(.2);
streamer.SetStepLength(.001);
streamer.SetNumberOfThreads(1);
streamer.SetIntegrationDirectionToForward();
streamer.VorticityOn();
streamer.SetIntegrator(rk4);
rf = vtkRibbonFilter.New();
rf.SetInputConnection(streamer.GetOutputPort());
rf.SetWidth(0.1);
rf.SetWidthFactor(5);
streamMapper = vtkPolyDataMapper.New();
streamMapper.SetInputConnection(rf.GetOutputPort());
streamMapper.SetScalarRange(pl3d.GetOutput().GetScalarRange()[0], pl3d.GetOutput().GetScalarRange()[1]);
streamline = vtkActor.New();
streamline.SetMapper(streamMapper);
streamline.VisibilityOff();
// The second line widget is used seed more streamlines.
lineWidget2 = vtkLineWidget.New();
seeds2 = vtkPolyData.New();
lineWidget2.SetInput(pl3d.GetOutput());
lineWidget2.PlaceWidget();
lineWidget2.GetPolyData(seeds2);
lineWidget2.SetKeyPressActivationValue((sbyte)108);
streamer2 = vtkStreamLine.New();
streamer2.SetInputConnection(pl3d.GetOutputPort());
streamer2.SetSource(seeds2);
streamer2.SetMaximumPropagationTime(100);
streamer2.SetIntegrationStepLength(.2);
streamer2.SetStepLength(.001);
streamer2.SetNumberOfThreads(1);
streamer2.SetIntegrationDirectionToForward();
streamer2.VorticityOn();
streamer2.SetIntegrator(rk4);
rf2 = vtkRibbonFilter.New();
rf2.SetInputConnection(streamer2.GetOutputPort());
rf2.SetWidth(0.1);
rf2.SetWidthFactor(5);
streamMapper2 = vtkPolyDataMapper.New();
streamMapper2.SetInputConnection(rf2.GetOutputPort());
streamMapper2.SetScalarRange(pl3d.GetOutput().GetScalarRange()[0], pl3d.GetOutput().GetScalarRange()[1]);
streamline2 = vtkActor.New();
streamline2.SetMapper(streamMapper2);
streamline2.VisibilityOff();
outline = vtkStructuredGridOutlineFilter.New();
outline.SetInputConnection(pl3d.GetOutputPort());
outlineMapper = vtkPolyDataMapper.New();
outlineMapper.SetInputConnection(outline.GetOutputPort());
outlineActor = vtkActor.New();
outlineActor.SetMapper(outlineMapper);
// Create the RenderWindow, Renderer and both Actors
ren1 = vtkRenderer.New();
renWin = vtkRenderWindow.New();
renWin.AddRenderer(ren1);
iren = vtkRenderWindowInteractor.New();
iren.SetRenderWindow(renWin);
// Associate the line widget with the interactor
lineWidget.SetInteractor(iren);
lineWidget.StartInteractionEvt += new vtkObject.vtkObjectEventHandler(BeginInteraction);
lineWidget.InteractionEvt += new vtkObject.vtkObjectEventHandler(GenerateStreamlines);
lineWidget2.SetInteractor(iren);
lineWidget2.StartInteractionEvt += new vtkObject.vtkObjectEventHandler(BeginInteraction2);
lineWidget2.EndInteractionEvt += new vtkObject.vtkObjectEventHandler(GenerateStreamlines2);
// Add the actors to the renderer, set the background and size
ren1.AddActor(outlineActor);
ren1.AddActor(streamline);
ren1.AddActor(streamline2);
ren1.SetBackground(1, 1, 1);
renWin.SetSize(300, 300);
ren1.SetBackground(0.1, 0.2, 0.4);
cam1 = ren1.GetActiveCamera();
cam1.SetClippingRange(3.95297, 50);
cam1.SetFocalPoint(9.71821, 0.458166, 29.3999);
cam1.SetPosition(2.7439, -37.3196, 38.7167);
cam1.SetViewUp(-0.16123, 0.264271, 0.950876);
// render the image
renWin.Render();
lineWidget2.On();
iren.Initialize();
iren.Start();
//Clean Up
deleteAllVTKObjects();
}
static vtkPLOT3DReader pl3d;
static vtkLineWidget lineWidget;
static vtkPolyData seeds;
static vtkRungeKutta4 rk4;
static vtkStreamLine streamer;
static vtkRibbonFilter rf;
static vtkPolyDataMapper streamMapper;
static vtkActor streamline;
static vtkLineWidget lineWidget2;
static vtkPolyData seeds2;
static vtkStreamLine streamer2;
static vtkRibbonFilter rf2;
static vtkPolyDataMapper streamMapper2;
static vtkActor streamline2;
static vtkStructuredGridOutlineFilter outline;
static vtkPolyDataMapper outlineMapper;
static vtkActor outlineActor;
static vtkRenderer ren1;
static vtkRenderWindow renWin;
static vtkRenderWindowInteractor iren;
static vtkCamera cam1;
/// <summary>
/// Callback function for lineWidget.StartInteractionEvt
/// </summary>
public static void BeginInteraction(vtkObject sender, vtkObjectEventArgs e)
{
streamline.VisibilityOn();
}
/// <summary>
/// Callback function for lineWidget.InteractionEvt
/// </summary>
public static void GenerateStreamlines(vtkObject sender, vtkObjectEventArgs e)
{
lineWidget.GetPolyData(seeds);
}
/// <summary>
/// Callback function for lineWidget2.StartInteractionEvt
/// </summary>
public static void BeginInteraction2(vtkObject sender, vtkObjectEventArgs e)
{
streamline2.VisibilityOn();
}
/// <summary>
/// Callback function for lineWidget2.InteractionEvt
/// </summary>
public static void GenerateStreamlines2(vtkObject sender, vtkObjectEventArgs e)
{
lineWidget2.GetPolyData(seeds2);
renWin.Render();
}
///<summary>Deletes all static objects created</summary>
public static void deleteAllVTKObjects()
{
//clean up vtk objects
if (pl3d != null) { pl3d.Dispose(); }
if (lineWidget != null) { lineWidget.Dispose(); }
if (seeds != null) { seeds.Dispose(); }
if (rk4 != null) { rk4.Dispose(); }
if (streamer != null) { streamer.Dispose(); }
if (rf != null) { rf.Dispose(); }
if (streamMapper != null) { streamMapper.Dispose(); }
if (streamline != null) { streamline.Dispose(); }
if (lineWidget2 != null) { lineWidget2.Dispose(); }
if (seeds2 != null) { seeds2.Dispose(); }
if (streamer2 != null) { streamer2.Dispose(); }
if (rf2 != null) { rf2.Dispose(); }
if (streamMapper2 != null) { streamMapper2.Dispose(); }
if (streamline2 != null) { streamline2.Dispose(); }
if (outline != null) { outline.Dispose(); }
if (outlineMapper != null) { outlineMapper.Dispose(); }
if (outlineActor != null) { outlineActor.Dispose(); }
if (ren1 != null) { ren1.Dispose(); }
if (renWin != null) { renWin.Dispose(); }
if (iren != null) { iren.Dispose(); }
if (cam1 != null) { cam1.Dispose(); }
}
}
//--- end of script --//
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