package com.genedavis;

import javax.media.opengl.*;


public class HelloWorld {
   public static void main (String args[]) {
      try {
         System.loadLibrary("jogl");
         System.out.println(
            "Hello World! (The native libraries are installed.)"
         );
        GLCapabilities caps = new GLCapabilities();
        System.out.println(
            "Hello JOGL! (The jar appears to be available.)"
         );
      } catch (Exception e) {
         System.out.println(e);
      }
   }
}   

  
package com.genedavis;

import java.awt.*;
import javax.swing.*;
import javax.media.opengl.*;


/**
   * This is a basic JOGL app. Feel free to
   * reuse this code or modify it.
   */
public class SimpleJoglApp extends JFrame {
   public static void main(String[] args) {
      final SimpleJoglApp app = new SimpleJoglApp();


      // show what we've done
      SwingUtilities.invokeLater (
         new Runnable() {
            public void run() {
               app.setVisible(true);
            }
         }
      );
   }


   public SimpleJoglApp() {
      //set the JFrame title
      super("Simple JOGL Application");


      //kill the process when the JFrame is closed
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);


      //only two JOGL lines of code ... and here they are
      GLCanvas glcanvas = new GLCanvas();
       glcanvas.addGLEventListener(new SimpleGLEventListener());


      //add the GLCanvas just like we would any Component
      getContentPane().add(glcanvas, BorderLayout.CENTER);
      setSize(500, 300);


      //center the JFrame on the screen
      centerWindow(this);
   }


   public void centerWindow(Component frame) {
      Dimension screenSize =
         Toolkit.getDefaultToolkit().getScreenSize();
      Dimension frameSize = frame.getSize();


      if (frameSize.width > screenSize.width )
         frameSize.width = screenSize.width;
      if (frameSize.height > screenSize.height)
         frameSize.height = screenSize.height;


      frame.setLocation (
          (screenSize.width - frameSize.width ) >> 1,
          (screenSize.height - frameSize.height) >> 1
      );
   }
} 

  
package com.genedavis;

import javax.media.opengl.*;


/**
 * For our purposes only two of the
 * GLEventListeners matter. Those would
 * be init() and display().
 */
public class SimpleGLEventListener implements GLEventListener
{


   /**
    * Take care of initialization here.
    */
   public void init(GLAutoDrawable drawable) {


   }


   /**
    * Take care of drawing here.
    */
   public void display(GLAutoDrawable drawable) {


   }


   /**
    * Called when the GLDrawable (GLCanvas
    * or GLJPanel) has changed in size. We
    * won't need this, but you may eventually
    * need it -- just not yet.
    */
   public void reshape(
                        GLAutoDrawable drawable,
                        int x,
                        int y,
                        int width,
                        int height
                       ) {}


   /**
    * If the display depth is changed while the
    * program is running this method is called.
    * Nowadays this doesn't happen much, unless
    * a programmer has his program do it.
    */
   public void displayChanged(
                        GLAutoDrawable drawable,
                        boolean modeChanged,
                        boolean deviceChanged
                      ) {}
} 

  
package com.genedavis;

import java.awt.*;
import javax.swing.*;
import javax.media.opengl.*;


/**
 * This is a basic JOGL app. Feel free to
 * reuse this code or modify it.
 */
public class SecondJoglApp extends JFrame {


   public static void main(String[] args) {
      final SecondJoglApp app = new SecondJoglApp();


      //show what we've done
      SwingUtilities.invokeLater (
         new Runnable() {
            public void run() {
               app.setVisible(true);
            }
         }
      );
   }


   public SecondJoglApp() {
      //set the JFrame title
      super("Second JOGL Application");


      //kill the process when the JFrame is closed
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);


      //only two JOGL lines of code ... and here they are
      GLCanvas glcanvas = new GLCanvas();
      glcanvas.addGLEventListener(new SecondGLEventListener());
      
      //add the GLCanvas just like we would any Component
      getContentPane().add(glcanvas, BorderLayout.CENTER);
      setSize(500, 300);


      //center the JFrame on the screen
      centerWindow(this);
   }


   public void centerWindow(Component frame) {
      Dimension screenSize =
         Toolkit.getDefaultToolkit().getScreenSize();
         Dimension frameSize = frame.getSize();


         if (frameSize.width > screenSize.width )
            frameSize.width = screenSize.width;
         if (frameSize.height > screenSize.height)
			frameSize.height = screenSize.height;
         frame.setLocation (
		  (screenSize.width - frameSize.width ) >> 1,
		  (screenSize.height - frameSize.height) >> 1
		 );
   }
}

  
package com.genedavis;

import javax.media.opengl.*;
import javax.media.opengl.glu.*;


/**
 * For our purposes only two of the GLEventListeners matter.
 * Those would be init() and display().
 */
public class SecondGLEventListener implements GLEventListener
{


   /**
    * Take care of initialization here.
    */
   public void init(GLAutoDrawable gld) {
      GL gl = gld.getGL();
      GLU glu = new GLU();


      gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);


      gl.glViewport(0, 0, 500, 300);
      gl.glMatrixMode(GL.GL_PROJECTION);
      gl.glLoadIdentity();
      glu.gluOrtho2D(0.0, 500.0, 0.0, 300.0);
   }


   /**
    * Take care of drawing here.
    */
   public void display(GLAutoDrawable drawable) {


      float red = 0.0f;
      float green = 0.0f;
      float blue = 0.0f;


      GL gl = drawable.getGL();


      gl.glClear(GL.GL_COLOR_BUFFER_BIT);


      gl.glPointSize(5.0f);


      for (int i=0; i<50; i++) {


         red -= .09f;
         green -= .12f;
         blue -= .15f;


      if (red < 0.15) red = 1.0f;
      if (green < 0.15) green = 1.0f;
      if (blue < 0.15) blue = 1.0f;


      gl.glColor3f(red, green, blue);


      gl.glBegin(GL.GL_POINTS);
         gl.glVertex2i((i*10), 150);
      gl.glEnd();
   }
}


public void reshape(
                     GLAutoDrawable drawable,
                     int x,
                     int y,
                     int width,
                     int height
                   ) {}
public void displayChanged(
                            GLAutoDrawable drawable,
                            boolean modeChanged,
                            boolean deviceChanged
                          ) {}
}