# TextActor

VTKExamples/Java/GeometricObjects/TextActor

Java Program to Demostrate the use of vtkTextActor. TextActor can be set with properties such as FontSize, FontFamily, DisplayPosition and so on.

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

### Code

TextActor.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.vtkNativeLibrary;
    import vtk.vtkPanel;
    import vtk.vtkTextActor;
    import vtk.vtkNamedColors;

    public class TextActor 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 TextActor() {
            super(new BorderLayout());

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

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

          vtkTextActor Text = new vtkTextActor();
          Text.SetInput("Hello World");
          Text.SetDisplayPosition(20, 30);
          Text.GetTextProperty().SetFontSize(40);
          Text.GetTextProperty().SetFontFamilyToArial();
          Text.GetTextProperty().BoldOn();
          Text.GetTextProperty().ShadowOn();
          Text.GetTextProperty().GetShadowOffset();
          Text.GetTextProperty().SetColor(ActorColor);

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

          // 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("Text Actor");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.getContentPane().setLayout(new BorderLayout());
                frame.getContentPane().add(new TextActor(), BorderLayout.CENTER);
                frame.setSize(400, 400);
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
              }
            });
          }
        }