/*
 *	@(#)HelloUniverse.java 1.42 98/04/09 15:33:36
 *
 * Copyright (c) 1996-1998 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 *
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
 * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
 * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
 * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
 * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
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 *
 * This software is not designed or intended for use in on-line control of
 * aircraft, air traffic, aircraft navigation or aircraft communications; or in
 * the design, construction, operation or maintenance of any nuclear
 * facility. Licensee represents and warrants that it will not use or
 * redistribute the Software for such purposes.
 */

import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.event.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.behaviors.mouse.*;
import javax.media.j3d.*;
import javax.vecmath.*;

public class HelloUniverse extends Applet {
	public BranchGroup createSceneGraph() {
		// Create the root of the branch graph
		BranchGroup objRoot = new BranchGroup();

		// Create the transform group node and initialize it to the
		// identity.  Enable the TRANSFORM_WRITE capability so that
		// our behavior code can modify it at runtime.  Add it to the
		// root of the subgraph.
		TransformGroup objTrans = new TransformGroup();
		objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
		objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
		objRoot.addChild(objTrans);

		// Create a simple shape leaf node, add it to the scene graph.
		objTrans.addChild(new ColorCube(0.4));

		// Create a new Behavior object that will perform the desired
		// operation on the specified transform object and add it into
		// the scene graph.
		BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
		MouseRotate mr = new MouseRotate(objTrans);
		objTrans.addChild(mr);
		mr.setSchedulingBounds(bounds);
		MouseZoom mz = new MouseZoom(objTrans);
		objTrans.addChild(mz);
		mz.setSchedulingBounds(bounds);

		// Have Java 3D perform optimizations on this scene graph.
		objRoot.compile();

		return objRoot;
	}

	public HelloUniverse() {
		setLayout(new BorderLayout());
		Canvas3D c = new Canvas3D(null);
		add("Center", c);

		// Create a simple scene and attach it to the virtual universe
		BranchGroup scene = createSceneGraph();
		SimpleUniverse u = new SimpleUniverse(c);

		// This will move the ViewPlatform back a bit so the
		// objects in the scene can be viewed.
		u.getViewingPlatform().setNominalViewingTransform();

		u.addBranchGraph(scene);
	}

	//
	// The following allows HelloUniverse to be run as an application
	// as well as an applet
	//
	public static void main(String[] args) {
		new MainFrame(new HelloUniverse(), 256, 256);
	}
}