import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.*;
import java.util.*;
import java.io.*;
import java.util.*;
import gl4java.GLContext;
import gl4java.awt.GLCanvas;

import gl4java.utils.glut.*;

public class ex3b extends Applet 
{
    exampleCanvas canvas = null;
    jooglClock rtClock = null;
    
    /**
     * void init()
     *
     * Initialise the applet.
     */
    public void init()
    {
        Dimension d = getSize();

        //We will use BorderLayout to layout the applet components
        setLayout(new BorderLayout());

        //Create our canvas and add it to the center of the applet
        canvas = new exampleCanvas(d.width, d.height);
        add("Center", canvas);

        rtClock = new jooglManualClock();
        canvas.setClock(rtClock);
        
        /* create a camera for each view */
        jooglCamera camera1 = 
            new jooglPerspectiveCamera(-10.0, -10.0, -30.0, /* eye is at (-10,-10,-30) */
	 		   0.0, 0.0, 0.0, /* center is at (0,0,0) */
			   0.0, 1.0, 0.0, /* up is in positive Y direction */
			   40.0, /* field of view in degree */ 
			   1.0, /* Z near */
			   100.0);/* Z far */

        jooglCamera camera2 = 
            new jooglPerspectiveCamera(10.0, 10.0, 30.0, /* eye is at (10,10,30) */
	 		   0.0, 0.0, 0.0, /* center is at (0,0,0) */
			   0.0, 1.0, 0.0, /* up is in positive Y direction */
			   40.0, /* field of view in degrees */ 
			   1.0, /* Z near */
			   100.0);/* Z far */

        /* retrieve the root object */
        jooglRoot root1 = new jooglRoot(0.01f, 0.01f, 0.48f, 0.98f);
        jooglRoot root2 = new jooglRoot(0.51f, 0.01f, 0.48f, 0.98f);
        
        root1.setShadeMode(new jooglShadeMode(jooglShadeMode.SMOOTH));
        root1.setCamera(camera1);

        root2.setShadeMode(new jooglShadeMode(jooglShadeMode.FLAT));
        root2.setCamera(camera2);

        canvas.addRoot(root1);
        canvas.addRoot(root2);

        jooglGroup root = new jooglGroup();
        root1.add(root);
        root2.add(root);
        
        /* create some ambient lights and add them to the scene graph. */
        jooglAmbientLight lightAmb = new jooglAmbientLight(0.02, 0.02, 0.2);
        root1.add(lightAmb);
        lightAmb = new jooglAmbientLight(0.2, 0.01, 0.01);
        root2.add(lightAmb);
    
        /* First, create two groups, and set them to rotating about the Y and Z axes.
         * Add the top group to the root. */
        jooglGroup group1 = new jooglGroup();
        jooglGroup group3 = new jooglGroup();
 
        root.add(group3);

        /* Add a group to the root. */
        group3.add(group1);

        group3.setTransform(new jooglDynamicTransform() {
                public double[] getValue(long time)
                {
                    double ry = (time/3333.0)*360.0;
                    setIdentity();
                    rotateY(ry);
                    return matrix;
                }
            });
        group1.setTransform(new jooglDynamicTransform() {
                public double[] getValue(long time)
                {
                    double rz = (time/2000.0)*360.0;
                    setIdentity();
                    rotateZ(rz);
                    return matrix;
                }
            });

        /***********************
         * Create two point light sources, with little icons for them (small spheres)
         ***********************/

        /* Next add a small green sphere to group1, and translate it to (6,3,3) */
        jooglSphere sphere1 = new jooglSphere(0.5, 10);
        sphere1.setTransform(new jooglTransform().translate(6.0, 3.0, 3.0));
        sphere1.setMaterial(new jooglMaterial(0.5, 1.0, 0.5, 0.8));

        jooglPositionalLight light1 = 
            new jooglPositionalLight(0.6, 1.5, 0.4, /* green-tinted */
				   6.0, 3.0, 3.0, /* out on the x axis */
				   1.0, 0.5, 0.0);
        group1.add(sphere1);
        group1.add(light1);
        
        /* Next add a small green sphere to group1, and translate it to (6,3,3) */
        jooglSphere sphere2 = new jooglSphere(0.5, 10);
        sphere2.setTransform(new jooglTransform().translate(-6.0, -3.0, -3.0));
        sphere2.setMaterial(new jooglMaterial(1.0, 0.5, 0.5, 0.8));

        jooglPositionalLight light2 = 
            new jooglPositionalLight(1.5, 0.4, 0.6, /* red-tinted */
				   -6.0, -3.0, -3.0, /* out on the x axis */
				   1.0, 0.5, 0.0);
        group1.add(sphere2);
        group1.add(light2);
        
        /* create a group and add it to the root. */
        jooglGroup group2 = new jooglGroup();
	root.add(group2);
        
        /* create a simple sphere with some properties, and put it in the group. */
        jooglSphere sphere = new jooglSphere(3.0, 30);
        sphere.setMaterial(new jooglMaterial(1.0, 0.5, 1.0));
        group2.add(sphere);
        
        jooglGroup group4 = new jooglGroup();
        group4.setTransform(new jooglTransform().translate(0.0, -3.0, 0.0));
        group4.add(sphere);
        group2.add(group4);

        jooglGroup group5 = new jooglGroup();
        group5.setTransform(new jooglTransform().translate(0.0, 3.0, 0.0));
        group5.add(sphere);
        group2.add(group5);
    }


    /**
     * void start()
     *
     * Start the applet.
     */
    public void start()
    {
    }


    /**
     * void stop()
     *
     * Stop the applet.
     */
    public void stop()
    {
    }

    /* main, for when it is run from the command line. 
     * Set up a window for the "applet" to run in.
     */
    public static void main( String args[] ) {
	ex3b applet = new ex3b();

	Frame f = new Frame("CS4451A Joogl Example 3B");
	f.addWindowListener( new WindowAdapter() {
		public void windowClosed(WindowEvent e)
		{
		    System.exit(0);
		}
		public void windowClosing(WindowEvent e)
		{
		    windowClosed(e);
		}
	    });

	f.setLayout(new BorderLayout());
	f.add("Center", applet);
	applet.setSize(500,300);
	applet.init();
	applet.start();
	Dimension ps = applet.getPreferredSize();
	f.setBounds(-100,-100,99,99);
	f.setVisible(true);
	f.setVisible(false);
	f.setVisible(true);
	Insets i = f.getInsets();
	f.setBounds(0,0, ps.width+i.left+i.right, 
		    ps.height+i.top+i.bottom);
	f.setVisible(true);
        while (true)
            try {
                Thread.sleep(1000);
            } catch (Exception e) {};
    }

    /* GLCanvas class for this application.     
     * We would use GLAnimCanvas because if we wanted the canvas
     * to be constantly redrawn.
     */
    private class exampleCanvas extends jooglCanvas implements MouseListener, MouseMotionListener
    {
        public exampleCanvas(int w, int h)
        {
            super(w, h);
        }

        /**
         * void preInit()
         *
         * Called just BEFORE the GL-Context is created.
         */
        public void preInit()
        {
            // initialize joogl
            super.preInit();
            
            addMouseMotionListener(this);
        }

        protected int x0;
        protected long t0;

        protected void newposition(int x)
        {
            long dx = ((long)(x - x0))*2;
            
            rtClock.setTime(t0 + dx);
        }
        
        /*
	 * Methods required for the implementation of MouseMotionListener
	 */
        public void mouseMoved(MouseEvent evt)
        {
        }
    
        public void mouseDragged(MouseEvent evt)
        {
	    int x1 = evt.getX();

            newposition(x1);
	    repaint();
        }

        /*
	 * Methods required for the implementation of MouseListener
	 */
        public void mouseEntered(MouseEvent evt)
        {
        }
    
        public void mouseExited(MouseEvent evt)
        {
        }
    
        public void mousePressed(MouseEvent evt)
        {
            x0 = evt.getX();
	    t0 = rtClock.getTime();
        }
    
        public void mouseReleased(MouseEvent evt)
        {
	    int x1 = evt.getX();

            newposition(x1);
            
	    repaint();
        }
    
        public void mouseClicked(MouseEvent evt)
        {
        }
    }
}