Line

VTKExamples/Java/GeometricObjects/Line


Description

The line is a primary one-dimensional cell. It is defined by two points. The direction along the line is from the first point to the second point.

Other Languages

See (Cxx), (Python), (CSharp)

Code

Line.java

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.vtkPolyDataMapper;
import vtk.vtkLineSource;




//Author: Bharatesh Chakravarthi
//Affiliation: VE Lab, Chung Ang University, Seoul, South Korea. 


public class Line 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 Line() 
  {
    super(new BorderLayout());
    double p0[] = new double[] {1.0,0.0,0.0};
    double p1[] = new double[] {0.0,1.0,0.0};

    //Create a Line
    vtkLineSource LineSource = new vtkLineSource();
    LineSource.SetPoint1(p0);
    LineSource.SetPoint1(p1);

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

    vtkActor Actor = new vtkActor();
    Actor.SetMapper(Mapper);
    Actor.GetProperty().SetColor(0.0, 0.5, 0.5); 
    Actor.GetProperty().SetLineWidth(5);

    renWin = new vtkPanel();
    renWin.GetRenderer().AddActor(Actor);
    renWin.GetRenderer().SetBackground(0.0, 0.1, 0.1);
    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("Line");
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.getContentPane().setLayout(new BorderLayout());
          frame.getContentPane().add(new Line(), BorderLayout.CENTER);
          frame.setSize(400, 400);
          frame.setLocationRelativeTo(null);
          frame.setVisible(true);
        }
      });
  }
}