Triangle

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;

import vtk.vtkActor;
import vtk.vtkNativeLibrary;
import vtk.vtkPanel;
import vtk.vtkPoints;
import vtk.vtkCellArray;
import vtk.vtkPolyData;
import vtk.vtkTriangle;
import vtk.vtkPolyDataMapper;
import vtk.vtkNamedColors;


public class Triangle extends JPanel implements ActionListener {
      private static final long serialVersionUID = 1L;
      private vtkPanel renWin;
      private JButton exitButton;

      // -----------------------------------------------------------------
      // 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 Triangle() {
        super(new BorderLayout());

      vtkNamedColors Color = new vtkNamedColors(); 

      //For Actor Color
      double ActorColor[] = new double[4];
      //Renderer Background Color
      double BgColor[] = new double[4];


      //Change Color Name to Use your own Color for Change Actor Color
      Color.GetColor("Gold",ActorColor);
      //Change Color Name to Use your own Color for Renderer Background
      Color.GetColor("SpringGreen",BgColor);



      // Create a triangle
      vtkPoints Points = new vtkPoints();
      Points.InsertNextPoint(1.0,0.0,0.0);
      Points.InsertNextPoint(0.0,0.0,0.0);
      Points.InsertNextPoint(0.0,1.0,0.0);

      vtkTriangle Triangle = new vtkTriangle();
      Triangle.GetPointIds().SetId(0, 0);
      Triangle.GetPointIds().SetId(1, 1);
      Triangle.GetPointIds().SetId(2, 2);

      vtkCellArray CellArray = new vtkCellArray();
      CellArray.InsertNextCell(Triangle);


    // Create a polydata object
      vtkPolyData TrianglePolyData = new vtkPolyData();
      // Add the geometry and topology to the polydata
      TrianglePolyData.SetPoints(Points);
      TrianglePolyData.SetPolys(CellArray);

      //Create a Mapper and Actor
      vtkPolyDataMapper Mapper = new vtkPolyDataMapper();
      Mapper.SetInputData(TrianglePolyData);

      vtkActor Actor = new vtkActor();
      Actor.SetMapper(Mapper);
      Actor.GetProperty().EdgeVisibilityOn();
      Actor.GetProperty().SetColor(ActorColor); 

      renWin = new vtkPanel();
      renWin.GetRenderer().AddActor(Actor);
      renWin.resetCamera();
      renWin.GetRenderer().SetBackground(BgColor);
      renWin.resetCamera();


      // Add Java UI components
      exitButton = new JButton("Exit");
      exitButton.addActionListener(this);

      add(renWin, BorderLayout.CENTER);
      add(exitButton, BorderLayout.SOUTH);
      }

      /** An ActionListener that listens to the button. */
      public void actionPerformed(ActionEvent e) {
        if (e.getSource().equals(exitButton)) {
          System.exit(0);
        }
      }

      public static void main(String s[]) {
        SwingUtilities.invokeLater(new Runnable() {
          public void run() {
            JFrame frame = new JFrame("Triangle");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.getContentPane().setLayout(new BorderLayout());
            frame.getContentPane().add(new Triangle(), BorderLayout.CENTER);
            frame.setSize(400, 400);
            frame.setLocationRelativeTo(null);
            frame.setVisible(true);
          }
        });
      }
    }