/**
 * Autor: Daniel del Río.
 * Fecha: 7 Sep, 2000
 * Version: 1.0
 */

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import javax.media.j3d.*;
import com.sun.j3d.loaders.*;
import com.sun.j3d.utils.universe.*;
import com.rio.anima.loader.*;


public class Anima3dApplet extends Applet {
	
	Canvas3D canvas;
	
	public void init() {
		AnimaScene scene = null;		
		URL url = null;
		
		try {			
			url = new URL(getParameter("url"));	
		} catch (MalformedURLException e) {
			e.printStackTrace();
			return;
		}
		
		AnimaLoader loader = new AnimaLoader(Loader.LOAD_ALL);
		
		try {
			scene = (AnimaScene) loader.load(url);
		} catch (Exception e) {
			e.printStackTrace();
			return;
		}

		VirtualUniverse universe = new VirtualUniverse();
		javax.media.j3d.Locale locale = new javax.media.j3d.Locale(universe);
		
		BranchGroup root = scene.getSceneGroup();
		root.compile();
		locale.addBranchGraph(root);
		
		GraphicsConfiguration gc = SimpleUniverse.getPreferredConfiguration();
		canvas = new Canvas3D(gc);
		canvas.stopRenderer();
		
		BranchGroup viewgroup = new BranchGroup();		
		ViewingPlatform viewingPlatform = new ViewingPlatform(1);	
		Viewer viewer = new Viewer(canvas);		
    	viewer.setViewingPlatform(viewingPlatform);    
    	
    	TransformGroup[] vgs = scene.getViewGroups();
    	TransformGroup tg = vgs[0];
    	tg.addChild(viewingPlatform);
    	viewgroup.addChild(tg);
    	locale.addBranchGraph(viewgroup);
    	
		Alpha alpha = null;
    	Behavior[] behaviors = scene.getBehaviorNodes();
    	if (behaviors != null) {
    		alpha = new Alpha();
    		alpha.setIncreasingAlphaDuration(scene.getFilmTime()); 		
    		for (int i = 0; i < behaviors.length; i++) {
    			if (behaviors[i] instanceof Interpolator) 
    				((Interpolator) behaviors[i]).setAlpha(alpha);
    		}
    	}
    	
    	setLayout(new BorderLayout());
    	add(canvas, BorderLayout.CENTER);
    	
    	if (alpha != null) 
    		alpha.setStartTime(System.currentTimeMillis());
	}
	
	public void start() {
		canvas.startRenderer();
	}

	public void stop() {
		canvas.stopRenderer();
	}
		
	public void destroy() {
	}
		
}