CompassWidget

import vtk.vtkNativeLibrary;
import vtk.vtkActor;
import vtk.vtkRenderWindowInteractor;
import vtk.vtkSphereSource;
import vtk.vtkNamedColors;
import vtk.vtkPolyDataMapper;
import vtk.vtkCompassRepresentation;
import vtk.vtkCompassWidget;
import vtk.vtkRenderWindow;
import vtk.vtkRenderer;


public class CompassWidget  {
  // private static final long serialVersionUID = 1L;


  // -----------------------------------------------------------------
  // Load VTK library and print which library was not properly loaded
  static {
    if (!vtkNativeLibrary.LoadAllNativeLibraries()) {
      for (vtkNativeLibrary lib : vtkNativeLibrary.values()) {
        if (!lib.IsLoaded()) {
          System.out.println(lib.GetLibraryName() + " not loaded");
        }
      }
    }
    vtkNativeLibrary.DisableOutputWindow(null);
  }
  // -----------------------------------------------------------------

  public static void main(String s[]) {


    vtkNamedColors Color = new vtkNamedColors(); 

    //For Renderer Background Color
    double BgColor[] = new double[4];
    //Change Color Name to Use your own Color for Renderer Background
    Color.GetColor("Black",BgColor);


    //Create a Sphere
    vtkSphereSource Sphere = new vtkSphereSource();
    Sphere.SetCenter(0.0,0.0,0.0);
    Sphere.SetRadius(4.0);
    Sphere.Update();

    //Create a Mapper and Actor
    vtkPolyDataMapper Mapper = new vtkPolyDataMapper();
    Mapper.SetInputConnection(Sphere.GetOutputPort());

    vtkActor Actor = new vtkActor();
    Actor.SetMapper(Mapper);

    // An interactor
    vtkRenderWindowInteractor iren = new vtkRenderWindowInteractor();

    vtkCompassRepresentation CompassRepresentation = new vtkCompassRepresentation();
    vtkCompassWidget CompassWidget = new vtkCompassWidget();
    CompassWidget.SetRepresentation(CompassRepresentation);
    CompassWidget.EnabledOn();
    CompassWidget.SetInteractor(iren);


    // Create the renderer, render window and interactor.
    vtkRenderer ren = new vtkRenderer();
    vtkRenderWindow renWin = new vtkRenderWindow();
    renWin.AddRenderer(ren);
    renWin.SetInteractor(iren);
    iren.SetRenderWindow(renWin);

    // Visualise the arrow
    ren.AddActor(Actor);
    ren.SetBackground(BgColor);
    ren.ResetCamera();

    CompassWidget.EnabledOn();

    renWin.SetSize(300, 300);
    renWin.Render();

    iren.Start();
    iren.Initialize();

  }
}