ConeYoyoApp.java Source code

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Here is the source code for ConeYoyoApp.java

Source

/*
 * ConeYoyoApp.java 1.0 98/11/25
 * 
 * Copyright (c) 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 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.
 */

/*
 * Getting Started with the Java 3D API written in Java 3D
 * 
 * This program demonstrates: 1. writing a visual object class In this program,
 * ConeYoyo class defines a visual object independent of all other classes. 2.
 * Using Cone to create surfaces.
 */

import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Frame;

import javax.media.j3d.Alpha;
import javax.media.j3d.Appearance;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.RotationInterpolator;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.vecmath.Point3d;
import javax.vecmath.Vector3f;

import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.Cone;
import com.sun.j3d.utils.universe.SimpleUniverse;

public class ConeYoyoApp extends Applet {

    /////////////////////////////////////////////////
    //
    // create scene graph branch group
    //
    public class ConeYoyo {

        private BranchGroup yoyoBG;

        ////////////////////////////////////////////
        //
        // create Shape3D with geometry and appearance
        // the geometry is created in method yoyoGeometry
        // the appearance is created in method yoyoAppearance
        //
        public ConeYoyo() {

            yoyoBG = new BranchGroup();

            Appearance app = new Appearance();

            // rotate object has composited transformation matrix
            Transform3D rotate = new Transform3D();
            Transform3D translate = new Transform3D();

            translate.set(new Vector3f(0.1f, 0.0f, 0.0f));
            TransformGroup yoyoTGT1 = new TransformGroup(translate);
            yoyoBG.addChild(yoyoTGT1);

            rotate.rotZ(Math.PI / 2.0d);
            TransformGroup yoyoTGR1 = new TransformGroup(rotate);
            Cone cone1 = new Cone(0.6f, 0.2f);
            cone1.setAppearance(app);
            yoyoTGR1.addChild(cone1);
            yoyoTGT1.addChild(yoyoTGR1);

            translate.set(new Vector3f(-0.1f, 0.0f, 0.0f));
            TransformGroup yoyoTGT2 = new TransformGroup(translate);
            yoyoBG.addChild(yoyoTGT2);

            rotate.rotZ(-Math.PI / 2.0d);
            TransformGroup yoyoTGR2 = new TransformGroup(rotate);
            Cone cone2 = new Cone(0.6f, 0.2f);
            cone2.setAppearance(app);
            yoyoTGR2.addChild(cone2);
            yoyoTGT2.addChild(yoyoTGR2);

            yoyoBG.compile();

        } // end of ConeYoyo constructor

        public BranchGroup getBG() {
            return yoyoBG;
        }

    } // end of class ConeYoyo

    /////////////////////////////////////////////////
    //
    // create scene graph branch group
    //
    public BranchGroup createSceneGraph() {

        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 objSpin = new TransformGroup();
        objSpin.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);

        objRoot.addChild(objSpin);
        objSpin.addChild(new ConeYoyo().getBG());

        // 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 rotationAlpha = new Alpha(-1, 4000);

        RotationInterpolator rotator = new RotationInterpolator(rotationAlpha, objSpin);
        BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);
        rotator.setSchedulingBounds(bounds);
        objSpin.addChild(rotator);

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

        return objRoot;
    } // end of CreateSceneGraph method of yoyo1

    // Create a simple scene and attach it to the virtual universe

    public ConeYoyoApp() {
        setLayout(new BorderLayout());
        Canvas3D canvas3D = new Canvas3D(null);
        add("Center", canvas3D);

        BranchGroup scene = createSceneGraph();

        SimpleUniverse simpleU = new SimpleUniverse(canvas3D);

        simpleU.getViewingPlatform().setNominalViewingTransform();

        simpleU.addBranchGraph(scene);
    } // end of ConeYoyoApp constructor

    //  The following allows this to be run as an application
    //  as well as an applet

    public static void main(String[] args) {
        Frame frame = new MainFrame(new ConeYoyoApp(), 256, 256);
    } // end of main method of coneyoyo

} // end of class ConeYoyoApp