/*
 * Copyright (c) 1993-1997, Silicon Graphics, Inc.
 * ALL RIGHTS RESERVED 
 * Permission to use, copy, modify, and distribute this software for 
 * any purpose and without fee is hereby granted, provided that the above
 * copyright notice appear in all copies and that both the copyright notice
 * and this permission notice appear in supporting documentation, and that 
 * the name of Silicon Graphics, Inc. not be used in advertising
 * or publicity pertaining to distribution of the software without specific,
 * written prior permission. 
 */

/*
 * Created on 18/02/2006
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */

/**
 *
 *  Cube.java
 *  This program demonstrates a single modeling transformation,
 *  glScalef() and a single viewing transformation, gluLookAt().
 *  A wireframe cube is rendered.
 * 
 *  @translated to Java by Wu Shin - Ting
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.sun.opengl.util.*;
import javax.media.opengl.*;
import javax.media.opengl.glu.*;

public class Cube extends JFrame implements GLEventListener, 
					    KeyListener {
    public static final Dimension PREFERRED_FRAME_SIZE = new Dimension(500, 500);

    /** Constructor.
     */
    public Cube() {
	// init JFrame
	super ("Cube - JMDM version ");
	System.out.println("Constructor");
    }

    /** We'd like to be 500x500, please.
     */
    public Dimension getPreferredSize(){
	return PREFERRED_FRAME_SIZE;

    }

    /*
     * METHODS DEFINED BY GLEventListener
     */

    /** Called by drawable to initiate drawing. 
     */
    public void display(GLAutoDrawable drawable) {
		
	GL gl = drawable.getGL();
	GLU glu = new GLU();
	GLUT glut = new GLUT();
		
	gl.glClear (GL.GL_COLOR_BUFFER_BIT);
	gl.glColor3f (1.0f, 1.0f, 1.0f);
	gl.glLoadIdentity ();             /* clear the matrix */
	/* viewing transformation */
	glu.gluLookAt(0.0f, 0.0f, 5.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f);
	gl.glScalef (1.0f, 2.0f, 1.0f);      /* modeling transformation */ 
	glut.glutWireCube(1.0f);               
	gl.glFlush ();

    }

    /** Called by drawable to indicate mode or device has changed.
     */
    public void displayChanged(GLAutoDrawable drawable, 
			       boolean modeChanged, 
			       boolean deviceChanged){}

    /** Called after OpenGL is init'ed
     */
    public void init(GLAutoDrawable drawable) {

    	System.out.println("init()");

    	GL gl = drawable.getGL();

    	System.err.println("INIT GL IS: " + gl.getClass().getName());
    	System.err.println("GL_VENDOR: " + gl.glGetString(GL.GL_VENDOR));
    	System.err.println("GL_RENDERER: " + gl.glGetString(GL.GL_RENDERER));
    	System.err.println("GL_VERSION: " + gl.glGetString(GL.GL_VERSION));

    	gl.glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
    	gl.glShadeModel (GL.GL_FLAT);
    	
        // add a GLEventListener, which will get called when a
        // key is pressed
	drawable.addKeyListener(this);    	
    }

    /** Called to indicate the drawing surface has been moved and/or resized.
     */
    public void reshape(GLAutoDrawable drawable, 
			int x, int y, 
			int width, int height){

    	System.out.println("reshape()");

    	GL gl = drawable.getGL();

    	gl.glViewport(0, 0, width, height); 
    	gl.glMatrixMode (GL.GL_PROJECTION);
    	gl.glLoadIdentity ();
    	gl.glFrustum (-1.0f, 1.0f, -1.0f, 1.0f, 1.5f, 20.0f);
    	gl.glMatrixMode (GL.GL_MODELVIEW);
    	
    }

    /*
     * OUR HELPER METHODS
     */

    // Methods required for the implementation of KeyListener

    public void keyPressed(KeyEvent e){
	System.out.println("Key pressed");
    	if (e.getKeyChar() == 27){
	    System.exit(0);
    	}
    }

    public void keyReleased(KeyEvent e){}
    
    public void keyTyped(KeyEvent e){}
        
    /** main creates and shows a Cube-JFrame
     */
    public static void main(String[] args){

    	Cube g = new Cube();    
    	//Set frame location
    	g.setLocation(100,100);
       	GLCapabilities gl_c = new GLCapabilities();
    	// Disable double buffer
    	gl_c.setDoubleBuffered(false);
     	// get a GLCanvas
    	GLCanvas canvas = new GLCanvas(gl_c);
     	// add a GLEventListener, which will get called when the
    	// canvas is resized or needs a repaint
    	canvas.addGLEventListener(g);
    	// now add the canvas to the JFrame.  Note we use BorderLayout.CENTER
    	// to make the canvas stretch to fill the container (ie, the frame)
    	g.getContentPane().add(canvas, BorderLayout.CENTER);

    	g.pack();
    	g.setVisible(true);

    }
}