Hi Zak,

   See attachment, run it with

   java MultiViews N

   where N is the no. of view.

- Kelvin
-----------
Java 3D Team
Sun Microsystems Inc.

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FILETIME=[8D3DA940:01C0C9A1]
>Date: Fri, 20 Apr 2001 08:55:38 -0500
>From: Sackmunky <[EMAIL PROTECTED]>
>Subject: [JAVA3D] Viewing examples
>To: [EMAIL PROTECTED]
>
>Does anyone have any examples with scenes with multiple views?
>
>I am trying to set up multiple views for the same scene, and need some
guidence.
>
>Can someone help?
>
>Zak
/*
 *      @(#)MultiViews.java 1.3 99/09/15 13:39:41
 *
 * Copyright (c) 1996-1999 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
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * 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.FlowLayout;
import java.awt.event.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.ColorCube;
import javax.media.j3d.*;
import javax.vecmath.*;

public class MultiViews extends Applet {
    public BranchGroup createSceneGraph() {
        // Create the root of the subgraph
        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);
        objRoot.addChild(objTrans);

        // Create a simple shape leaf node and add it into 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.
        Transform3D yAxis = new Transform3D();
        Alpha rotation = new Alpha(-1, Alpha.INCREASING_ENABLE,
                                   0, 0,
                                   4000, 0, 0,
                                   0, 0, 0);

        RotationInterpolator rotator =
            new RotationInterpolator(rotation,
                                     objTrans, yAxis,
                                     0.0f, (float) Math.PI*2.0f);
        BoundingSphere bounds =
            new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
        rotator.setSchedulingBounds(bounds);
        objTrans.addChild(rotator);

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

        return objRoot;
    }

    public MultiViews(int numViews) {
        setLayout(new FlowLayout());

        Canvas3D c = new Canvas3D(SimpleUniverse.getPreferredConfiguration());
        c.setSize(200, 200);
        add(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();

        View view0 = u.getViewer().getView();
        for (int i = 1; i < numViews; i++) {
            c = new Canvas3D(SimpleUniverse.getPreferredConfiguration());
            c.setSize(200, 200);
            add(c);

            // Create a second view on the second canvas, attach it to
            // the viewing platform
            View view = new View();
            view.setPhysicalBody(view0.getPhysicalBody());
            view.setPhysicalEnvironment(view0.getPhysicalEnvironment());
            view.attachViewPlatform(u.getViewingPlatform().getViewPlatform());
            view.addCanvas3D(c);
        }

        u.addBranchGraph(scene);
    }

    //
    // The following allows MultiViews to be run as an application
    // as well as an applet
    //
    public static void main(String[] args) {
        int nViews = 2;

        if (args.length > 0) {
            try {
                nViews = Integer.parseInt(args[0]);
            }
            catch (NumberFormatException e) {
                System.out.println("Usage: java MultiViews [#views]");
                System.exit(1);
            }
        }

        new MainFrame(new MultiViews(nViews), 700, 700);
    }
}

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