doublebuf.java

// ANIMACION USANDO EL DOBLE BUFFER   - ADB 1/1 -
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

import javax.media.opengl.*;
import javax.media.opengl.glu.*;
import com.sun.opengl.util.*;
import javax.media.opengl.GLEventListener;


public class doublebuf extends JFrame implements GLEventListener, KeyListener, MouseListener
{
   private GLCapabilities caps;
   private GLCanvas canvas;
   private FPSAnimator animator;
   private float spin = 0f , spinDelta = 2f ;

   public doublebuf ()
   {
     super ( "doublebuf" ) ;
    
     caps = new GLCapabilities () ;
     caps.setDoubleBuffered ( true ) ;
     canvas = new GLCanvas ( caps ) ;
     canvas.addGLEventListener ( this ) ;
     canvas.addMouseListener ( this ) ;
     animator = new FPSAnimator ( canvas, 200 ) ;
    
     getContentPane () .add ( canvas ) ;
   }

   public void run ()
   {
     setSize ( 512 , 256 ) ;
     setLocationRelativeTo ( null ) ;
     setDefaultCloseOperation ( JFrame.EXIT_ON_CLOSE ) ;
     setVisible ( true ) ;
     animator.start () ;
   }

   public static void main ( String [] args ) { new doublebuf () .run () ; }

   public void init ( GLAutoDrawable drawable )
   {
     GL gl = drawable.getGL () ;
     gl.glClearColor ( 0.0f , 0.0f , 0.0f , 0.0f ) ;
     gl.glShadeModel ( GL.GL_FLAT ) ;
   }

   public void display ( GLAutoDrawable drawable )
   {
	GLUT glut = new GLUT();
     GL gl = drawable.getGL () ;
     gl.glClear ( GL.GL_COLOR_BUFFER_BIT ) ;
     gl.glPushMatrix () ;
     System.out.println("Spin= " + spin+ "\tDelta= " + spinDelta);
     gl.glRotatef ( spin, 0.0f , 0.0f , 1.0f ) ;
     gl.glColor3f ( 1.0f , 1.0f , 1.0f ) ;
     glut.glutWireSphere(20d, 30, 30);
     gl.glPopMatrix () ;

     gl.glFlush () ;
     spinDisplay () ;
   }

   public void reshape ( GLAutoDrawable drawable, int x, int y, int w, int h )
   {
     GL gl = drawable.getGL () ;
     gl.glViewport ( 0 , 0 , w, h ) ;
     gl.glMatrixMode ( GL.GL_PROJECTION ) ;
     gl.glLoadIdentity () ;
    
	gl.glOrtho(-50.0, 50.0, -400.0, 400.0, -10.0, 10.0);
 
     gl.glMatrixMode ( GL.GL_MODELVIEW ) ;
     gl.glLoadIdentity () ;
   }

   public void displayChanged ( GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged )   {   }

   private void spinDisplay ()
   {
     spin = spin + spinDelta;
     if ( spin > 360f ) spin = spin - 360 ;
   }

   public void keyTyped ( KeyEvent key )   {   }

   public void keyPressed ( KeyEvent key )
   {
     switch ( key.getKeyCode ()) {
       case KeyEvent.VK_ESCAPE:
         new Thread ()
         {  public void run ()  { animator.stop () ; }   } .start () ;
         System.exit ( 0 ) ;
       default :
         break ;
     }
   }

   public void keyReleased ( KeyEvent key )   {   }

   public void mouseClicked ( MouseEvent key )   {   }

   public void mousePressed ( MouseEvent mouse )
   {
	System.out.println("Rafa...");
	switch ( mouse.getButton ())
	{
		case MouseEvent.BUTTON1:
			spinDelta = 2f ;
			break ;
		case MouseEvent.BUTTON2:
		case MouseEvent.BUTTON3:
			spinDelta = 0f ;
			break ;
	}
	//System.out.println("Spin= " + spin+ "\tDelta= " + spinDelta);
   }

   public void mouseReleased ( MouseEvent mouse )   {   }

   public void mouseEntered ( MouseEvent mouse )   {   }

   public void mouseExited ( MouseEvent mouse )   {   }

}