Java/3D/Motion

HelloJava3Dc renders a single, rotating cube

/*
 * @(#)HelloJava3Dc.java 1.0 98/11/09 15:07:04
 * 
 * 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 java.awt.Frame;
import javax.media.j3d.Alpha;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.RotationInterpolator;
import javax.media.j3d.TransformGroup;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.universe.SimpleUniverse;
//   HelloJava3Dc renders a single, rotating cube.
public class HelloJava3Dc 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. Add it to the root of the subgraph.
    TransformGroup objSpin = new TransformGroup();
    objSpin.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    objRoot.addChild(objSpin);
    // Create a simple shape leaf node, add it to the scene graph.
    // ColorCube is a Convenience Utility class
    objSpin.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.
    Alpha rotationAlpha = new Alpha(-1, 4000);
    RotationInterpolator rotator = new RotationInterpolator(rotationAlpha,
        objSpin);
    // a bounding sphere specifies a region a behavior is active
    // create a sphere centered at the origin with radius of 100
    BoundingSphere bounds = new BoundingSphere();
    rotator.setSchedulingBounds(bounds);
    objSpin.addChild(rotator);
    return objRoot;
  } // end of CreateSceneGraph method
  public HelloJava3Dc() {
    setLayout(new BorderLayout());
    Canvas3D canvas3D = new Canvas3D(null);
    add("Center", canvas3D);
    BranchGroup scene = createSceneGraph();
    // SimpleUniverse is a Convenience Utility class
    SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
    // This will move the ViewPlatform back a bit so the
    // objects in the scene can be viewed.
    simpleU.getViewingPlatform().setNominalViewingTransform();
    simpleU.addBranchGraph(scene);
  } // end of HelloJava3D (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 HelloJava3Dc(), 256, 256);
  } // end of main (method of HelloJava3D)
} // end of class HelloJava3Dc

Sphere Motion

/*
 * @(#)SphereMotion.java 1.38 02/10/21 13:55:06
 * 
 * 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.Light;
import javax.media.j3d.Material;
import javax.media.j3d.PointLight;
import javax.media.j3d.PositionInterpolator;
import javax.media.j3d.RotationInterpolator;
import javax.media.j3d.SpotLight;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Point3f;
import javax.vecmath.Vector3d;
import javax.vecmath.Vector3f;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.Sphere;
import com.sun.j3d.utils.universe.SimpleUniverse;
public class SphereMotion extends Applet {
  // Constants for type of light to use
  private static final int DIRECTIONAL_LIGHT = 0;
  private static final int POINT_LIGHT = 1;
  private static final int SPOT_LIGHT = 2;
  // Flag indicates type of lights: directional, point, or spot
  // lights. This flag is set based on command line argument
  private static int lightType = POINT_LIGHT;
  private SimpleUniverse u = null;
  public BranchGroup createSceneGraph(SimpleUniverse u) {
    Color3f eColor = new Color3f(0.0f, 0.0f, 0.0f);
    Color3f sColor = new Color3f(1.0f, 1.0f, 1.0f);
    Color3f objColor = new Color3f(0.6f, 0.6f, 0.6f);
    Color3f lColor1 = new Color3f(1.0f, 0.0f, 0.0f);
    Color3f lColor2 = new Color3f(0.0f, 1.0f, 0.0f);
    Color3f alColor = new Color3f(0.2f, 0.2f, 0.2f);
    Color3f bgColor = new Color3f(0.05f, 0.05f, 0.2f);
    Transform3D t;
    // 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(0.4);
    objScale.setTransform(t3d);
    objRoot.addChild(objScale);
    // Create a bounds for the background and lights
    BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
        100.0);
    // Set up the background
    Background bg = new Background(bgColor);
    bg.setApplicationBounds(bounds);
    objScale.addChild(bg);
    // Create a Sphere object, generate one copy of the sphere,
    // and add it into the scene graph.
    Material m = new Material(objColor, eColor, objColor, sColor, 100.0f);
    Appearance a = new Appearance();
    m.setLightingEnable(true);
    a.setMaterial(m);
    Sphere sph = new Sphere(1.0f, Sphere.GENERATE_NORMALS, 80, a);
    objScale.addChild(sph);
    // Create the transform group node for the each light and initialize
    // it to the identity. Enable the TRANSFORM_WRITE capability so that
    // our behavior code can modify it at runtime. Add them to the root
    // of the subgraph.
    TransformGroup l1RotTrans = new TransformGroup();
    l1RotTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    objScale.addChild(l1RotTrans);
    TransformGroup l2RotTrans = new TransformGroup();
    l2RotTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    objScale.addChild(l2RotTrans);
    // Create transformations for the positional lights
    t = new Transform3D();
    Vector3d lPos1 = new Vector3d(0.0, 0.0, 2.0);
    t.set(lPos1);
    TransformGroup l1Trans = new TransformGroup(t);
    l1RotTrans.addChild(l1Trans);
    t = new Transform3D();
    Vector3d lPos2 = new Vector3d(0.5, 0.8, 2.0);
    t.set(lPos2);
    TransformGroup l2Trans = new TransformGroup(t);
    l2RotTrans.addChild(l2Trans);
    // Create Geometry for point lights
    ColoringAttributes caL1 = new ColoringAttributes();
    ColoringAttributes caL2 = new ColoringAttributes();
    caL1.setColor(lColor1);
    caL2.setColor(lColor2);
    Appearance appL1 = new Appearance();
    Appearance appL2 = new Appearance();
    appL1.setColoringAttributes(caL1);
    appL2.setColoringAttributes(caL2);
    l1Trans.addChild(new Sphere(0.05f, appL1));
    l2Trans.addChild(new Sphere(0.05f, appL2));
    // Create lights
    AmbientLight aLgt = new AmbientLight(alColor);
    Light lgt1 = null;
    Light lgt2 = null;
    Point3f lPoint = new Point3f(0.0f, 0.0f, 0.0f);
    Point3f atten = new Point3f(1.0f, 0.0f, 0.0f);
    Vector3f lDirect1 = new Vector3f(lPos1);
    Vector3f lDirect2 = new Vector3f(lPos2);
    lDirect1.negate();
    lDirect2.negate();
    switch (lightType) {
    case DIRECTIONAL_LIGHT:
      lgt1 = new DirectionalLight(lColor1, lDirect1);
      lgt2 = new DirectionalLight(lColor2, lDirect2);
      break;
    case POINT_LIGHT:
      lgt1 = new PointLight(lColor1, lPoint, atten);
      lgt2 = new PointLight(lColor2, lPoint, atten);
      break;
    case SPOT_LIGHT:
      lgt1 = new SpotLight(lColor1, lPoint, atten, lDirect1,
          25.0f * (float) Math.PI / 180.0f, 10.0f);
      lgt2 = new SpotLight(lColor2, lPoint, atten, lDirect2,
          25.0f * (float) Math.PI / 180.0f, 10.0f);
      break;
    }
    // Set the influencing bounds
    aLgt.setInfluencingBounds(bounds);
    lgt1.setInfluencingBounds(bounds);
    lgt2.setInfluencingBounds(bounds);
    // Add the lights into the scene graph
    objScale.addChild(aLgt);
    l1Trans.addChild(lgt1);
    l2Trans.addChild(lgt2);
    // 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 rotor1Alpha = new Alpha(-1, Alpha.INCREASING_ENABLE, 0, 0, 4000,
        0, 0, 0, 0, 0);
    RotationInterpolator rotator1 = new RotationInterpolator(rotor1Alpha,
        l1RotTrans, yAxis, 0.0f, (float) Math.PI * 2.0f);
    rotator1.setSchedulingBounds(bounds);
    l1RotTrans.addChild(rotator1);
    // Create a new Behavior object that will perform the desired
    // operation on the specified transform object and add it into the
    // scene graph.
    Alpha rotor2Alpha = new Alpha(-1, Alpha.INCREASING_ENABLE, 0, 0, 1000,
        0, 0, 0, 0, 0);
    RotationInterpolator rotator2 = new RotationInterpolator(rotor2Alpha,
        l2RotTrans, yAxis, 0.0f, 0.0f);
    bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);
    rotator2.setSchedulingBounds(bounds);
    l2RotTrans.addChild(rotator2);
    // Create a position interpolator and attach it to the view
    // platform
    TransformGroup vpTrans = u.getViewingPlatform()
        .getViewPlatformTransform();
    Transform3D axisOfTranslation = new Transform3D();
    Alpha transAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE
        | Alpha.DECREASING_ENABLE, 0, 0, 5000, 0, 0, 5000, 0, 0);
    axisOfTranslation.rotY(-Math.PI / 2.0);
    PositionInterpolator translator = new PositionInterpolator(transAlpha,
        vpTrans, axisOfTranslation, 2.0f, 3.5f);
    translator.setSchedulingBounds(bounds);
    objScale.addChild(translator);
    // Let Java 3D perform optimizations on this scene graph.
    objRoot.rupile();
    return objRoot;
  }
  public SphereMotion() {
  }
  public void init() {
    setLayout(new BorderLayout());
    GraphicsConfiguration config = SimpleUniverse
        .getPreferredConfiguration();
    Canvas3D c = new Canvas3D(config);
    add("Center", c);
    u = new SimpleUniverse(c);
    BranchGroup scene = createSceneGraph(u);
    // 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 SphereMotion to be run as an application
  // as well as an applet
  //
  public static void main(String[] args) {
    // Parse the Input Arguments
    String usage = "Usage: java SphereMotion [-point | -spot | -dir]";
    for (int i = 0; i < args.length; i++) {
      if (args[i].startsWith("-")) {
        if (args[i].equals("-point")) {
          System.out.println("Using point lights");
          lightType = POINT_LIGHT;
        } else if (args[i].equals("-spot")) {
          System.out.println("Using spot lights");
          lightType = SPOT_LIGHT;
        } else if (args[i].equals("-dir")) {
          System.out.println("Using directional lights");
          lightType = DIRECTIONAL_LIGHT;
        } else {
          System.out.println(usage);
          System.exit(0);
        }
      } else {
        System.out.println(usage);
        System.exit(0);
      }
    }
    new MainFrame(new SphereMotion(), 700, 700);
  }
}