import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import javax.media.opengl.GL;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLCanvas;
import javax.media.opengl.GLCapabilities;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.GLJPanel;
import javax.media.opengl.glu.GLU;
import javax.swing.JFrame;
import java.lang.Math;

import com.sun.opengl.util.GLUT;

public class Cube //
    extends glskeleton//
    implements GLEventListener//
	       , KeyListener //
{
    private GLU glu;
    private GLUT glut;
    
    public Cube() {
    }
    
    public static void main(String[] args) {
        GLCapabilities caps = new GLCapabilities();
        GLJPanel canvas = new GLJPanel(caps);
        Cube demo = new Cube();
        canvas.addGLEventListener(demo);
        demo.setCanvas(canvas);
        demo.setDefaultListeners(demo);
        JFrame frame = new JFrame("Cube");
        frame.setSize(500, 500);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(canvas);
        frame.setVisible(true);
        canvas.requestFocusInWindow();
    }
    
    public void init(GLAutoDrawable drawable) {
        GL gl = drawable.getGL();
        glu = new GLU();
        glut = new GLUT();
        gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
        gl.glShadeModel(GL.GL_FLAT);
    }
    
    public void display(GLAutoDrawable drawable) {
        GL gl = drawable.getGL();
	gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
	gl.glMatrixMode(GL.GL_MODELVIEW);
	gl.glLoadIdentity();
	glut.glutWireCube(1.0f);
	gl.glFlush();
    }
    
    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();
	//change the parameters to see the effect
// 	gl.glFrustum(5.0,-5.0,//left and right
// 		     5.0,-5.0,//top and bottom
// 		     1.0,5.0);//near and far

	//change the parameters to see the effect
// 	glu.gluPerspective(120,//angle of x-z plane
// 			   w/h,//aspect of width and height
// 			   1,5);//near and far

	//change the parameters to see the effect
	gl.glOrtho(1.0,-1.0,//left and right
		   1.0,-1.0,//top and bottom
		   1.0,5.0);//near and far
	glu.gluLookAt(1,2,3, 0,0,0, 0,1,0);
    }
    
    public void displayChanged(GLAutoDrawable drawable, boolean modeChanged,
			       boolean deviceChanged) {
    }
    
    public void keyTyped(KeyEvent arg0) {
    }
    
    public void keyPressed(KeyEvent key) {
        switch (key.getKeyCode()) {
	case KeyEvent.VK_ESCAPE:
	    super.runExit();
	default:
	    break;
        }
    }
    
    public void keyReleased(KeyEvent arg0) {
    }
    
}