/** 
 * A little toy program for showing students of COMP3421
 * the basics of 3D rendering. 
 *
 */

import java.awt.*;
import java.awt.event.*; 

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


public class Toy2 extends Frame 
    implements GLEventListener, KeyListener
{

    GLCanvas glc;
    int aWidth = 400;
    int aHeight = 400;
    public static void main(String[] args){
    
        Toy2 t = new Toy2();
    }


    public Toy2(){
        super("Toy2");

	glc = new GLCanvas();

        glc.addGLEventListener(this);
        glc.addKeyListener(this);
        setLayout(new BorderLayout());
	add("Center", glc);
        setSize(aWidth,aHeight);
	setVisible(true);
    }
    
    /* The functions below are required because we are a GLEventListener.
       We could also have put them in another class and put that class in the
       addGLEventListener method above.
    */


    /** 
     * Executed exactly once to initialize the 
     * associated GLDrawable
     */ 

    public void init(GLAutoDrawable drawable) {
	GL gl = drawable.getGL();
	/** 
	 * Set the background colour when the GLDrawable 
	 * is cleared 
	 */ 
        gl.glClearColor(0.2f, 0.3f, 0.2f, 1.0f);

    }
    
    
    /** 
     * Executed if the associated GLDrawable is resized
     */ 
    public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
	GL gl = drawable.getGL();
	GLU glu = new GLU();
        gl.glViewport(x, y, width, height);
        gl.glMatrixMode(GL.GL_PROJECTION);
        gl.glLoadIdentity();
        //        gl.glOrtho(-2, 2, -2, 2, -5, 10);
        glu.gluPerspective(60, 1, 0.5, 100);
        gl.glMatrixMode(GL.GL_MODELVIEW);
        gl.glLoadIdentity();
        glu.gluLookAt(5, 5, 5, 0, 0, 0, 1, 0, 0);
        gl.glEnable(GL.GL_DEPTH_TEST);
    }

    /** This method handles the painting of the GLDrawable */
    
    public void display(GLAutoDrawable drawable) {
        float[] xwingMat = {0.6f, 0.6f, 0.6f, 1.0f};
        float[] lightpos = {5f, 5f, 5f, 1.0f};
	GL gl = drawable.getGL();
	GLU glu = new GLU();
        gl.glShadeModel(GL.GL_SMOOTH);
        gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
        gl.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, lightpos, 0);
        gl.glEnable(GL.GL_LIGHTING);
        gl.glEnable(GL.GL_LIGHT0);
	gl.glEnable(GL.GL_NORMALIZE); //scale normals to have length 1
        gl.glMaterialfv(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT_AND_DIFFUSE, xwingMat, 0);
        gl.glPushMatrix();
        StarWars.xwing(gl,10);
        
        gl.glPopMatrix();

    }
    /** This method handles things if display depth changes */
    public void displayChanged(GLAutoDrawable drawable,
			       boolean modeChanged,
			       boolean deviceChanged){
    }

    public void keyTyped(KeyEvent evt){

    }

    public void keyReleased(KeyEvent evt){

    }

    public void keyPressed(KeyEvent evt){
        if(evt.getKeyChar() == 'q') dispose();
    }
    
}