import net.java.games.jogl.*;
import javax.swing.*;
import java.awt.*;

public class TestProgram {
  
  private static class Renderer implements GLEventListener {
    
    public void display( GLDrawable drawable ) {
      GL gl = drawable.getGL();
      gl.glClear(GL.GL_COLOR_BUFFER_BIT);
      gl.glMatrixMode(GL.GL_MODELVIEW);
      gl.glLoadIdentity();
      gl.glBegin( GL.GL_TRIANGLES );
      gl.glVertex2d(-1.0, -1.0 );
      gl.glVertex2d(1.0, -1.0);
      gl.glVertex2d(0.0, 1.0);
      gl.glEnd();
      gl.glFlush();
    }
    
    public void displayChanged(GLDrawable drawable, boolean modeChanged, 
                             boolean deviceChanged) { }
    
    public void init(GLDrawable drawable) {}
    
    public void reshape( GLDrawable drawable, int x, int y, int w, int h){
      GL gl = drawable.getGL();
      gl.glMatrixMode(GL.GL_PROJECTION);
      gl.glLoadIdentity();
      gl.glOrtho(-2.0, 2.0, -2.0, 2.0, -1, 1 );
    }
  }
  
  public static void main( String[] args ) {
    JFrame frame = new JFrame();
    JPanel mainPanel = new JPanel();
    mainPanel.setLayout( new BorderLayout() );
    Renderer rend = new Renderer();
    GLCanvas can = GLDrawableFactory.getFactory().createGLCanvas(new GLCapabilities());
    can.addGLEventListener( rend );
    
    mainPanel.add(can, BorderLayout.CENTER );
    JPanel buttonPanel = new JPanel();
    buttonPanel.add( new JButton("Button One") );
    buttonPanel.add( new JButton("Button Two") );
    mainPanel.add(buttonPanel, BorderLayout.SOUTH);
    
    frame.getContentPane().add(mainPanel);
    frame.setSize( 400,400);
    frame.show();
  }
  
}