Java/3D/Cylinder

PickWorld creates spheres, cylinders, and cones of different resolutions

/*
 *  @(#)PickWorld.java 1.10 98/04/13 13:49:14
 *
 * 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
 * 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.BorderLayout;
import javax.media.j3d.AmbientLight;
import javax.media.j3d.Appearance;
import javax.media.j3d.Background;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.ColoringAttributes;
import javax.media.j3d.DirectionalLight;
import javax.media.j3d.Group;
import javax.media.j3d.Material;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Vector3d;
import javax.vecmath.Vector3f;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.behaviors.picking.PickRotateBehavior;
import com.sun.j3d.utils.behaviors.picking.PickTranslateBehavior;
import com.sun.j3d.utils.behaviors.picking.PickZoomBehavior;
import com.sun.j3d.utils.geometry.Cone;
import com.sun.j3d.utils.geometry.Cylinder;
import com.sun.j3d.utils.geometry.Primitive;
import com.sun.j3d.utils.geometry.Sphere;
import com.sun.j3d.utils.image.TextureLoader;
import com.sun.j3d.utils.universe.SimpleUniverse;
/**
 * PickWorld creates spheres, cylinders, and cones of different resolutions and
 * colors. You can pick each one and drag/zoom them around. The setup comes from
 * TickTockPicking.
 */
public class PickWorld extends Applet {
  public BranchGroup createSceneGraph(Canvas3D c) {
    // Create the root of the branch graph
    BranchGroup objRoot = new BranchGroup();
    // Create a Transformgroup to scale all objects so they
    // appear in the scene.
    TransformGroup objScale = new TransformGroup();
    Transform3D t3d = new Transform3D();
    t3d.setScale(1.0);
    objScale.setTransform(t3d);
    objRoot.addChild(objScale);
    // Create a bounds for the background and behaviors
    BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
        100.0);
    // Attach picking behavior utlities to the scene root.
    // They will wake up when user manipulates a scene node.
    PickRotateBehavior behavior = new PickRotateBehavior(objRoot, c, bounds);
    objRoot.addChild(behavior);
    PickZoomBehavior behavior2 = new PickZoomBehavior(objRoot, c, bounds);
    objRoot.addChild(behavior2);
    PickTranslateBehavior behavior3 = new PickTranslateBehavior(objRoot, c,
        bounds);
    objRoot.addChild(behavior3);
    // Set up the background
    Color3f bgColor = new Color3f(0.05f, 0.05f, 0.4f);
    Background bg = new Background(bgColor);
    bg.setApplicationBounds(bounds);
    objRoot.addChild(bg);
    // Set up the global lights
    Color3f lColor1 = new Color3f(0.7f, 0.7f, 0.7f);
    Vector3f lDir1 = new Vector3f(-1.0f, -1.0f, -1.0f);
    Color3f alColor = new Color3f(0.2f, 0.2f, 0.2f);
    AmbientLight aLgt = new AmbientLight(alColor);
    aLgt.setInfluencingBounds(bounds);
    DirectionalLight lgt1 = new DirectionalLight(lColor1, lDir1);
    lgt1.setInfluencingBounds(bounds);
    objRoot.addChild(aLgt);
    objRoot.addChild(lgt1);
    // Create a bunch of objects with a behavior and add them
    // into the scene graph.
    int row, col;
    int numRows = 3, numCols = 5;
    Appearance[][] app = new Appearance[numRows][numCols];
    for (row = 0; row < numRows; row++)
      for (col = 0; col < numCols; col++)
        app[row][col] = createAppearance(row * numCols + col);
    for (int i = 0; i < numRows; i++) {
      double ypos = (double) (i - numRows / 2) * 0.6;
      for (int j = 0; j < numCols; j++) {
        double xpos = (double) (j - numCols / 2) * 0.4;
        objScale
            .addChild(createObject(i, j, app[i][j], 0.1, xpos, ypos));
      }
    }
    // Let Java 3D perform optimizations on this scene graph.
    objRoot.rupile();
    return objRoot;
  }
  private Appearance createAppearance(int idx) {
    Appearance app = new Appearance();
    // Globally used colors
    Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
    Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
    Color3f gray = new Color3f(0.4f, 0.4f, 0.4f);
    idx = idx % 5;
    switch (idx) {
    // Lit solid
    case 0: {
      // Set up the material properties
      Color3f objColor = new Color3f(0.0f, 0.8f, 0.0f);
      app.setMaterial(new Material(objColor, black, objColor, white,
          80.0f));
      break;
    }
    // Lit solid, specular only
    case 1: {
      // Set up the material properties
      Color3f objColor = new Color3f(0.0f, 0.4f, 0.2f);
      app.setMaterial(new Material(black, black, objColor, white, 80.0f));
      break;
    }
    case 2: {
      // Set up the texture map
      TextureLoader tex = new TextureLoader("apimage.jpg", this);
      app.setTexture(tex.getTexture());
      // Set up the material properties
      app.setMaterial(new Material(gray, black, gray, white, 1.0f));
      break;
    }
    // Texture mapped, lit solid
    case 3: {
      // Set up the texture map
      TextureLoader tex = new TextureLoader("earth.jpg", this);
      app.setTexture(tex.getTexture());
      // Set up the material properties
      app.setMaterial(new Material(gray, black, gray, white, 1.0f));
      break;
    }
    // Another lit solid with a different color
    case 4: {
      // Set up the material properties
      Color3f objColor = new Color3f(1.0f, 1.0f, 0.0f);
      app.setMaterial(new Material(objColor, black, objColor, white,
          80.0f));
      break;
    }
    default: {
      ColoringAttributes ca = new ColoringAttributes();
      ca.setColor(new Color3f(0.0f, 1.0f, 0.0f));
      app.setColoringAttributes(ca);
    }
    }
    return app;
  }
  private Group createObject(int i, int j, Appearance app, double scale,
      double xpos, double ypos) {
    // Create a transform group node to scale and position the object.
    Transform3D t = new Transform3D();
    t.set(scale, new Vector3d(xpos, ypos, 0.0));
    TransformGroup objTrans = new TransformGroup(t);
    objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    objTrans.setCapability(TransformGroup.ENABLE_PICK_REPORTING);
    // Create a second transform group node and initialize it to the
    // identity. Enable the TRANSFORM_WRITE capability so that
    // our behavior code can modify it at runtime.
    TransformGroup spinTg = new TransformGroup();
    spinTg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    spinTg.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    spinTg.setCapability(TransformGroup.ENABLE_PICK_REPORTING);
    Primitive obj = null;
    if (i % 3 == 2) {
      obj = (Primitive) new Sphere(1.0f, Sphere.GENERATE_NORMALS
          | Sphere.GENERATE_TEXTURE_COORDS, j * 8 + 4, app);
    } else if (i % 3 == 1) {
      obj = (Primitive) new Cylinder(1.0f, 2.0f,
          Cylinder.GENERATE_TEXTURE_COORDS
              | Cylinder.GENERATE_NORMALS, j * 8 + 4, j * 8 + 4,
          app);
    } else if (i % 3 == 0) {
      obj = (Primitive) new Cone(1.0f, 2.0f, Cone.GENERATE_NORMALS
          | Cone.GENERATE_TEXTURE_COORDS, j * 8 + 4, j * 8 + 4, app);
    }
    // add it to the scene graph.
    spinTg.addChild(obj);
    objTrans.addChild(spinTg);
    return objTrans;
  }
  public PickWorld() {
    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(c);
    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 PickWorld to be run as an application
  // as well as an applet
  //
  public static void main(String[] args) {
    new MainFrame(new PickWorld(), 640, 480);
  }
}

Spheres, cylinders, and cones of different resolutions and colors

/*
 *  @(#)ConicWorld.java 1.27 02/10/21 13:38:29
 *
 * Copyright (c) 1996-2002 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 *
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * 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.
 *
 * You acknowledge that Software is not designed,licensed or intended
 * for use in the design, construction, operation or maintenance of
 * any nuclear facility.
 */
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.GraphicsConfiguration;
import javax.media.j3d.Alpha;
import javax.media.j3d.AmbientLight;
import javax.media.j3d.Appearance;
import javax.media.j3d.Background;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.ColoringAttributes;
import javax.media.j3d.DirectionalLight;
import javax.media.j3d.Group;
import javax.media.j3d.Material;
import javax.media.j3d.RotationInterpolator;
import javax.media.j3d.TextureAttributes;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Vector3d;
import javax.vecmath.Vector3f;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.Cone;
import com.sun.j3d.utils.geometry.Cylinder;
import com.sun.j3d.utils.geometry.Primitive;
import com.sun.j3d.utils.geometry.Sphere;
import com.sun.j3d.utils.image.TextureLoader;
import com.sun.j3d.utils.universe.SimpleUniverse;
/**
 * ConicWorld creates spheres, cylinders, and cones of different resolutions and
 * colors. Demonstrates the use of the various geometry creation constructors
 * found in the com.sun.j3d.utils.geometry package.
 */
public class ConicWorld extends Applet {
  private java.net.URL texImage = null;
  private SimpleUniverse u = null;
  public BranchGroup createSceneGraph(Canvas3D c) {
    // Create the root of the branch graph
    BranchGroup objRoot = new BranchGroup();
    // Create a bounds for the background and behaviors
    BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
        100.0);
    // Set up the background
    Color3f bgColor = new Color3f(0.05f, 0.05f, 0.2f);
    Background bg = new Background(bgColor);
    bg.setApplicationBounds(bounds);
    objRoot.addChild(bg);
    // Set up the global lights
    Color3f lColor1 = new Color3f(0.7f, 0.7f, 0.7f);
    Vector3f lDir1 = new Vector3f(-1.0f, -1.0f, -1.0f);
    Color3f alColor = new Color3f(0.2f, 0.2f, 0.2f);
    AmbientLight aLgt = new AmbientLight(alColor);
    aLgt.setInfluencingBounds(bounds);
    DirectionalLight lgt1 = new DirectionalLight(lColor1, lDir1);
    lgt1.setInfluencingBounds(bounds);
    objRoot.addChild(aLgt);
    objRoot.addChild(lgt1);
    // Create a bunch of objects with a behavior and add them
    // into the scene graph.
    int row, col;
    int numRows = 3, numCols = 5;
    Appearance[][] app = new Appearance[numRows][numCols];
    for (row = 0; row < numRows; row++)
      for (col = 0; col < numCols; col++)
        app[row][col] = createAppearance(row * numCols + col);
    // Space between each row/column
    double xspace = 2.0 / ((double) numCols - 1.0);
    double yspace = 2.0 / ((double) numRows - 1.0);
    for (int i = 0; i < numRows; i++) {
      double ypos = ((double) i * yspace - 1.0) * 0.6;
      for (int j = 0; j < numCols; j++) {
        double xpos = xpos = ((double) j * xspace - 1.0) * 0.6;
        objRoot
            .addChild(createObject(i, j, app[i][j], 0.1, xpos, ypos));
      }
    }
    // Let Java 3D perform optimizations on this scene graph.
    objRoot.rupile();
    return objRoot;
  }
  private Appearance createAppearance(int idx) {
    Appearance app = new Appearance();
    // Globally used colors
    Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
    Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
    idx = idx % 5;
    switch (idx) {
    // Lit solid
    case 0: {
      // Set up the material properties
      Color3f objColor = new Color3f(0.8f, 0.0f, 0.0f);
      app.setMaterial(new Material(objColor, black, objColor, white,
          80.0f));
      break;
    }
    // Lit solid, no specular
    case 1: {
      // Set up the material properties
      Color3f objColor = new Color3f(0.0f, 0.8f, 0.0f);
      app.setMaterial(new Material(objColor, black, objColor, white,
          80.0f));
      break;
    }
    // Lit solid, specular only
    case 2: {
      // Set up the material properties
      Color3f objColor = new Color3f(0.0f, 0.8f, 0.8f);
      app.setMaterial(new Material(black, black, objColor, white, 80.0f));
      break;
    }
    // Texture mapped, lit solid
    case 3: {
      // Set up the texture map
      TextureLoader tex = new TextureLoader(texImage, this);
      app.setTexture(tex.getTexture());
      // Set up the material properties
      app.setMaterial(new Material(white, black, white, black, 1.0f));
      TextureAttributes texAttr = new TextureAttributes();
      texAttr.setTextureMode(TextureAttributes.MODULATE);
      app.setTextureAttributes(texAttr);
      break;
    }
    // Another lit solid with a different color
    case 4: {
      // Set up the material properties
      Color3f objColor = new Color3f(1.0f, 1.0f, 0.0f);
      app.setMaterial(new Material(objColor, black, objColor, white,
          80.0f));
      break;
    }
    default: {
      ColoringAttributes ca = new ColoringAttributes();
      ca.setColor(new Color3f(0.0f, 1.0f, 0.0f));
      app.setColoringAttributes(ca);
    }
    }
    return app;
  }
  private Group createObject(int i, int j, Appearance app, double scale,
      double xpos, double ypos) {
    // Create a transform group node to scale and position the object.
    Transform3D t = new Transform3D();
    t.set(scale, new Vector3d(xpos, ypos, 0.0));
    TransformGroup objTrans = new TransformGroup(t);
    // Create a second transform group node and initialize it to the
    // identity. Enable the TRANSFORM_WRITE capability so that
    // our behavior code can modify it at runtime.
    TransformGroup spinTg = new TransformGroup();
    spinTg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    spinTg.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    Primitive obj = null;
    if (i % 3 == 2) {
      obj = (Primitive) new Sphere(1.0f, Sphere.GENERATE_NORMALS
          | Sphere.GENERATE_TEXTURE_COORDS, j * 8 + 4, app);
    } else if (i % 3 == 1) {
      obj = (Primitive) new Cylinder(1.0f, 2.0f,
          Cylinder.GENERATE_TEXTURE_COORDS
              | Cylinder.GENERATE_NORMALS, j * 8 + 4, j * 8 + 4,
          app);
    } else if (i % 3 == 0) {
      obj = (Primitive) new Cone(1.0f, 2.0f, Cone.GENERATE_NORMALS
          | Cone.GENERATE_TEXTURE_COORDS, j * 8 + 4, j * 8 + 4, app);
    }
    // add it to the scene graph.
    spinTg.addChild(obj);
    // 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, Alpha.INCREASING_ENABLE, 0, 0,
        5000, 0, 0, 0, 0, 0);
    RotationInterpolator rotator = new RotationInterpolator(rotationAlpha,
        spinTg, 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);
    // Add the behavior and the transform group to the object
    objTrans.addChild(rotator);
    objTrans.addChild(spinTg);
    return objTrans;
  }
  public ConicWorld() {
  }
  public ConicWorld(java.net.URL url) {
    texImage = url;
  }
  public void init() {
    if (texImage == null) {
      // the path to the image for an applet
      try {
        texImage = new java.net.URL(getCodeBase().toString()
            + "/earth.jpg");
      } catch (java.net.MalformedURLException ex) {
        System.out.println(ex.getMessage());
        System.exit(1);
      }
    }
    setLayout(new BorderLayout());
    GraphicsConfiguration config = SimpleUniverse
        .getPreferredConfiguration();
    Canvas3D c = new Canvas3D(config);
    add("Center", c);
    // Create a simple scene and attach it to the virtual universe
    BranchGroup scene = createSceneGraph(c);
    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);
  }
  public void destroy() {
    u.cleanup();
  }
  //
  // The following allows ConicWorld to be run as an application
  // as well as an applet
  //
  public static void main(String[] args) {
    // the path to the image file for an application
    java.net.URL url = null;
    try {
      url = new java.net.URL("file:earth.jpg");
    } catch (java.net.MalformedURLException ex) {
      System.out.println(ex.getMessage());
      System.exit(1);
    }
    new MainFrame(new ConicWorld(url), 700, 700);
  }
}

This creates a simple cylinder by using the Cylinder utility class

/*
Essential Java 3D Fast
Ian Palmer
Publisher: Springer-Verlag
ISBN: 1-85233-394-4
*/
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.media.j3d.Appearance;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.Locale;
import javax.media.j3d.PhysicalBody;
import javax.media.j3d.PhysicalEnvironment;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.media.j3d.View;
import javax.media.j3d.ViewPlatform;
import javax.media.j3d.VirtualUniverse;
import javax.vecmath.AxisAngle4d;
import javax.vecmath.Vector3f;
import com.sun.j3d.utils.geometry.Cylinder;
/**
 * This creates a simple cylinder by using the Cylinder utility class.
 * 
 * @author I.J.Palmer
 * @version 1.0
 */
public class SimpleCylinder extends Frame implements ActionListener {
  protected Canvas3D myCanvas3D = new Canvas3D(null);
  protected Button myButton = new Button("Exit");
  /**
   * This function builds the view branch of the scene graph. It creates a
   * branch group and then creates the necessary view elements to give a
   * useful view of our content.
   * 
   * @param c
   *            Canvas3D that will display the view
   * @return BranchGroup that is the root of the view elements
   */
  protected BranchGroup buildViewBranch(Canvas3D c) {
    BranchGroup viewBranch = new BranchGroup();
    Transform3D viewXfm = new Transform3D();
    viewXfm.set(new Vector3f(0.0f, 0.0f, 5.0f));
    TransformGroup viewXfmGroup = new TransformGroup(viewXfm);
    ViewPlatform myViewPlatform = new ViewPlatform();
    PhysicalBody myBody = new PhysicalBody();
    PhysicalEnvironment myEnvironment = new PhysicalEnvironment();
    viewXfmGroup.addChild(myViewPlatform);
    viewBranch.addChild(viewXfmGroup);
    View myView = new View();
    myView.addCanvas3D(c);
    myView.attachViewPlatform(myViewPlatform);
    myView.setPhysicalBody(myBody);
    myView.setPhysicalEnvironment(myEnvironment);
    return viewBranch;
  }
  /**
   * This builds the content branch of our scene graph. It uses the Cylinder
   * utility class to create the actual shape, adding to to the transform
   * group so that the shape is slightly tilted to reveal its 3D shape.
   * 
   * @param shape
   *            Node that represents the geometry for the content
   * @return BranchGroup that is the root of the content branch
   */
  protected BranchGroup buildContentBranch() {
    BranchGroup contentBranch = new BranchGroup();
    Transform3D rotateCube = new Transform3D();
    rotateCube.set(new AxisAngle4d(1.0, 1.0, 0.0, Math.PI / 4.0));
    TransformGroup rotationGroup = new TransformGroup(rotateCube);
    contentBranch.addChild(rotationGroup);
    //Create the shape and add it to the branch
    rotationGroup.addChild(new Cylinder(1.0f, 1.0f, new Appearance()));
    return contentBranch;
  }
  /**
   * Handles the exit button action to quit the program.
   */
  public void actionPerformed(ActionEvent e) {
    dispose();
    System.exit(0);
  }
  public SimpleCylinder() {
    VirtualUniverse myUniverse = new VirtualUniverse();
    Locale myLocale = new Locale(myUniverse);
    myLocale.addBranchGraph(buildViewBranch(myCanvas3D));
    myLocale.addBranchGraph(buildContentBranch());
    setTitle("SimpleCylinder");
    setSize(400, 400);
    setLayout(new BorderLayout());
    add("Center", myCanvas3D);
    add("South", myButton);
    myButton.addActionListener(this);
    setVisible(true);
  }
  public static void main(String[] args) {
    SimpleCylinder sw = new SimpleCylinder();
  }
}

Three resolutions of a cylinder to demonstrate

/*
Essential Java 3D Fast
Ian Palmer
Publisher: Springer-Verlag
ISBN: 1-85233-394-4
*/
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Frame;
import java.awt.Panel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.media.j3d.AmbientLight;
import javax.media.j3d.Appearance;
import javax.media.j3d.BoundingLeaf;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.DirectionalLight;
import javax.media.j3d.DistanceLOD;
import javax.media.j3d.Locale;
import javax.media.j3d.Material;
import javax.media.j3d.PhysicalBody;
import javax.media.j3d.PhysicalEnvironment;
import javax.media.j3d.Switch;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.media.j3d.View;
import javax.media.j3d.ViewPlatform;
import javax.media.j3d.VirtualUniverse;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Point3f;
import javax.vecmath.Vector3f;
import com.sun.j3d.utils.behaviors.keyboard.KeyNavigatorBehavior;
import com.sun.j3d.utils.geometry.Cylinder;
/**
 * This uses three resolutions of a cylinder to demonstrate the operation of a
 * level of detail node.
 * 
 * @author I.J.Palmer
 * @version 1.0
 */
public class SimpleLOD extends Frame implements ActionListener {
  protected Canvas3D myCanvas3D = new Canvas3D(null);
  protected Button exitButton = new Button("Exit");
  protected BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0,
      0.0), 100.0);
  /**
   * Build the view branch of the scene graph. In this case a key navigation
   * utility object is created and associated with the view transform so that
   * the view can be changed via the keyboard.
   * 
   * @return BranchGroup that is the root of the view branch
   */
  protected BranchGroup buildViewBranch(Canvas3D c) {
    BranchGroup viewBranch = new BranchGroup();
    Transform3D viewXfm = new Transform3D();
    viewXfm.set(new Vector3f(0.0f, 0.0f, 10.0f));
    TransformGroup viewXfmGroup = new TransformGroup(viewXfm);
    viewXfmGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    viewXfmGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    BoundingSphere movingBounds = new BoundingSphere(new Point3d(0.0, 0.0,
        0.0), 100.0);
    BoundingLeaf boundLeaf = new BoundingLeaf(movingBounds);
    ViewPlatform myViewPlatform = new ViewPlatform();
    viewXfmGroup.addChild(boundLeaf);
    PhysicalBody myBody = new PhysicalBody();
    PhysicalEnvironment myEnvironment = new PhysicalEnvironment();
    viewXfmGroup.addChild(myViewPlatform);
    viewBranch.addChild(viewXfmGroup);
    View myView = new View();
    myView.addCanvas3D(c);
    myView.attachViewPlatform(myViewPlatform);
    myView.setPhysicalBody(myBody);
    myView.setPhysicalEnvironment(myEnvironment);
    KeyNavigatorBehavior keyNav = new KeyNavigatorBehavior(viewXfmGroup);
    keyNav.setSchedulingBounds(movingBounds);
    viewBranch.addChild(keyNav);
    return viewBranch;
  }
  /**
   * Add some lights to the scene graph
   * 
   * @param b
   *            BranchGroup that the lights are added to
   */
  protected void addLights(BranchGroup b) {
    Color3f ambLightColour = new Color3f(0.5f, 0.5f, 0.5f);
    AmbientLight ambLight = new AmbientLight(ambLightColour);
    ambLight.setInfluencingBounds(bounds);
    Color3f dirLightColour = new Color3f(1.0f, 1.0f, 1.0f);
    Vector3f dirLightDir = new Vector3f(-1.0f, -1.0f, -1.0f);
    DirectionalLight dirLight = new DirectionalLight(dirLightColour,
        dirLightDir);
    dirLight.setInfluencingBounds(bounds);
    b.addChild(ambLight);
    b.addChild(dirLight);
  }
  /**
   * Build the content branch for the scene graph This creates three
   * cylinders, each with a different resolution. These are then used with a
   * LOD node to implement a crude level of detail.
   * 
   * @return BranchGroup that is the root of the content
   */
  protected BranchGroup buildContentBranch() {
    //Create the appearance
    Appearance app = new Appearance();
    Color3f ambientColour = new Color3f(1.0f, 1.0f, 0.0f);
    Color3f emissiveColour = new Color3f(0.0f, 0.0f, 0.0f);
    Color3f specularColour = new Color3f(1.0f, 1.0f, 1.0f);
    Color3f diffuseColour = new Color3f(1.0f, 1.0f, 0.0f);
    float shininess = 20.0f;
    app.setMaterial(new Material(ambientColour, emissiveColour,
        diffuseColour, specularColour, shininess));
    //Make the switch node that is to used with the LOD
    //and make it writable
    Switch LODswitch = new Switch();
    LODswitch.setCapability(Switch.ALLOW_SWITCH_WRITE);
    //Add the three cylinders
    LODswitch.addChild(new Cylinder(1.0f, 1.0f, Cylinder.GENERATE_NORMALS,
        10, 10, app));
    LODswitch.addChild(new Cylinder(1.0f, 1.0f, Cylinder.GENERATE_NORMALS,
        5, 5, app));
    LODswitch.addChild(new Cylinder(1.0f, 1.0f, Cylinder.GENERATE_NORMALS,
        3, 3, app));
    //Define the distances for the LOD
    float[] LODdistances = { 5.0f, 10.0f, 15.0f };
    DistanceLOD myLOD = new DistanceLOD(LODdistances, new Point3f(0.0f,
        0.0f, 0.0f));
    myLOD.setSchedulingBounds(bounds);
    //Add the switch to the LOD
    myLOD.addSwitch(LODswitch);
    BranchGroup contentBranch = new BranchGroup();
    contentBranch.addChild(myLOD);
    addLights(contentBranch);
    contentBranch.addChild(LODswitch);
    return contentBranch;
  }
  /**
   * Use the action event of the exit button to end the application.
   */
  public void actionPerformed(ActionEvent e) {
    dispose();
    System.exit(0);
  }
  public SimpleLOD() {
    VirtualUniverse myUniverse = new VirtualUniverse();
    Locale myLocale = new Locale(myUniverse);
    myLocale.addBranchGraph(buildViewBranch(myCanvas3D));
    myLocale.addBranchGraph(buildContentBranch());
    setTitle("SimpleLOD");
    setSize(400, 400);
    setLayout(new BorderLayout());
    Panel bottom = new Panel();
    bottom.add(exitButton);
    add(BorderLayout.CENTER, myCanvas3D);
    add(BorderLayout.SOUTH, bottom);
    exitButton.addActionListener(this);
    setVisible(true);
  }
  public static void main(String[] args) {
    SimpleLOD sl = new SimpleLOD();
  }
}