package cs3744;

import com.sun.opengl.util.Animator;
import com.sun.opengl.util.awt.Overlay;
import com.sun.opengl.util.gl2.GLUT;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.media.opengl.DebugGL2;
import javax.media.opengl.GL2;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLCapabilities;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.GLProfile;
import javax.media.opengl.awt.GLJPanel;
import javax.media.opengl.glu.GLU;
import javax.swing.JFrame;


/**
 * CS 3744 Fall 2010 Homework One solution template.
 * Draws two white squares on a blue background.
 * The mouse pointer coordinates are displayed in the centers of both squares,
 * The lower rectangle displays the coordinates in red using the OpenGL API.
 * The upper rectangle displays the coordinates in green using Java2D API.
 *
 * Implements GLEventListener to support OpenGL and MouseMotionListener to
 * support mouse tracking.
 *
 * @author Denis Gracanin
 * @version 1.0
 */
public class HomeworkOne implements GLEventListener, MouseMotionListener {
    private String text = "(-, -)";
    private int height = 0;

    /**
     * The main method creates an instance of the Homework One class and
     * provides the necessary GUI for the OpenGL display.
     *
     * @param args Command line arguments (none supported).
     */
    public static void main(String[] args) {
        HomeworkOne homeworkOne = new HomeworkOne();
        JFrame frame = new JFrame("Homework One");
        GLCapabilities capabilities = new GLCapabilities(GLProfile.get(GLProfile.GL2));
        GLJPanel panel = new GLJPanel(capabilities);
        panel.addGLEventListener(homeworkOne);
        panel.addMouseMotionListener(homeworkOne);
        frame.getContentPane().add(panel);
        final Animator animator = new Animator(panel);
        frame.addWindowListener(new WindowAdapter() {

            @Override
            public void windowClosing(WindowEvent e) {
                // Run this on another thread than the AWT event queue to
                // make sure the call to Animator.stop() completes before
                // exiting
                new Thread(new Runnable() {

                    public void run() {
                        animator.stop();
                        System.exit(0);
                    }
                }).start();
            }
        });
        frame.setSize(400, 400);
        frame.setVisible(true);
        animator.start();
    }

    /**
     * Initializes the application for OpenGL to set the swap interval,
     * background color, and shading type.
     *
     * @param drawable Provides a primary OpenGL rendering context.
     */
    public void init(GLAutoDrawable drawable) {
        drawable.setGL(new DebugGL2(drawable.getGL().getGL2()));
        GL2 gl = drawable.getGL().getGL2();
        gl.setSwapInterval(1);

// OpenGL code goes in here

    }

    /**
     * Called during the first repaint after the component has been resized.
     * Used to adjust to the change in the window size.
     *
     * @param drawable Provides a primary OpenGL rendering context.
     */
    public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
        GL2 gl = drawable.getGL().getGL2();
        GLU glu = new GLU();

// OpenGL code goes in here

    }

    /**
     * Contains OpenGLcode to create and display graphics.
     * It also include Java graphics <code>Overlay</code> to render text.
     *
     * @param drawable Provides a primary OpenGL rendering context.
     */
    public void display(GLAutoDrawable drawable) {
        GL2 gl = drawable.getGL().getGL2();
        GLUT glut = new GLUT();

        // OpenGL code goes in here

        Overlay overlay = new Overlay(drawable);
        Graphics2D graphics = overlay.createGraphics();
        graphics.setColor(Color.green);
        graphics.drawString(text, 100, 100);
        overlay.drawAll();
        graphics.dispose();

    }

    /**
     * Releases all OpenGL resources that may be allocated.
     *
     * @param drawable Provides a primary OpenGL rendering context.
     */
    public void dispose(GLAutoDrawable drawable) {
    }

    /**
     * The <code>MouseMotionListener</code> handler triggered when a mouse is
     * dragged over the listener area.
     *
     * @param e A mouse event that triggered this handler.
     */
    public void mouseDragged(MouseEvent e) {
    }

   /**
     * The <code>MouseMotionListener</code> handler triggered when a mouse is
     * moved over the listener area.
     *
     * @param e A mouse event that triggered this handler.
     */
    public void mouseMoved(MouseEvent e) {
        text = "(" + e.getX() + ", " + e.getY() + ")";
    }
}