java left logo
java middle logo
java right logo
 

Home arrow Other API Tips
 
 
Main Menu
Home
Java Tutorials
Book Reviews
Java SE Tips
Java ME Tips
Java EE Tips
Other API Tips
Java Applications
Java Libraries
Java Games
Java Network
Java Forums
Java Blog




Most Visited Tips
Java SE Tips
Java ME Tips
Java EE Tips
Other API Tips
Java Applications
Java Libraries
Java Games
Book Reviews
Top Rated Tips
Java SE Tips
Java ME Tips
Java EE Tips
Other API Tips
Java Applications
Java Libraries
Java Games
Book Reviews


Statistics
Registered Users: 4086
Java SE Tips: 614
Java ME Tips: 202
Java EE Tips: 183
Other API Tips: 779
Java Applications: 298
Java Libraries: 209
Java Games: 16
Book Reviews:
 
 
 
How to rotate a cube when any key is pressed E-mail
User Rating: / 22
PoorBest 

This Java3D application renders a single ColorCube that rotates when any key is pressed.


Image

import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.event.KeyEvent;
import java.util.Enumeration;

import javax.media.j3d.Behavior;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.media.j3d.WakeupOnAWTEvent;

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

//   SimpleBehaviorApp renders a single ColorCube
//   that rotates when any key is pressed.

public class SimpleBehaviorApp extends Applet {

  public class SimpleBehavior extends Behavior {

    private TransformGroup targetTG;

    private Transform3D rotation = new Transform3D();

    private double angle = 0.0;

    // create SimpleBehavior
    SimpleBehavior(TransformGroup targetTG) {
      this.targetTG = targetTG;
    }

    // initialize the Behavior
    //     set initial wakeup condition
    //     called when behavior beacomes live
    public void initialize() {
      // set initial wakeup condition
      this.wakeupOn(new WakeupOnAWTEvent(KeyEvent.KEY_PRESSED));
    }

    // behave
    // called by Java 3D when appropriate stimulus occures
    public void processStimulus(Enumeration criteria) {
      // decode event

      // do what is necessary
      angle += 0.1;
      rotation.rotY(angle);
      targetTG.setTransform(rotation);
      this.wakeupOn(new WakeupOnAWTEvent(KeyEvent.KEY_PRESSED));
    }

  // end of class SimpleBehavior

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

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

    objRoot.addChild(objRotate);
    objRotate.addChild(new ColorCube(0.4));

    SimpleBehavior myRotationBehavior = new SimpleBehavior(objRotate);
    myRotationBehavior.setSchedulingBounds(new BoundingSphere());
    objRoot.addChild(myRotationBehavior);

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

    return objRoot;
  // end of CreateSceneGraph method of SimpleBehaviorApp

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

  public SimpleBehaviorApp() {
    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 SimpleBehaviorApp (constructor)

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

  public static void main(String[] args) {
    System.out
        .print("SimpleBehaviorApp.java \n- a demonstration of creating a simple");
    System.out
        .println("behavior class to provide interaction in a Java 3D scene.");
    System.out
        .println("When the app loads, press any key to make the cube rotate.");
    System.out
        .println("This is a simple example progam from The Java 3D API Tutorial.");
    System.out.println("The Java 3D Tutorial is available on the web at:");
    System.out.println("http://www.sun.com/desktop/java3d/collateral");
    Frame frame = new MainFrame(new SimpleBehaviorApp()256256);
  // end of main (method of SimpleBehaviorApp)

// end of class SimpleBehaviorApp

 Related Tips

 
< Prev   Next >

Page 1 of 0 ( 0 comments )

You can share your information about this topic using the form below!

Please do not post your questions with this form! Thanks.


Name (required)


E-Mail (required)

Your email will not be displayed on the site - only to our administrator
Homepage(optional)



Comment Enable HTML code : Yes No



 
       
         
     
 
 
 
   
 
 
java bottom left
java bottom middle
java bottom right
RSS 0.91 FeedRSS 1.0 FeedRSS 2.0 FeedATOM FeedOPML Feed

Home - About Us - Privacy Policy
Copyright 2005 - 2008 www.java-tips.org
Java is a trademark of Sun Microsystems, Inc.