Gernot,
Though I'm sure you don't need it, I also ran into this with a Swing application. I
did not have time to develop a workaround so unfortunately we shipped with this bug.
As you said, the user had to click into the Canvas3D before keyboard events would be
registered with Java 3D.
Sincerely,
Daniel Selman
[EMAIL PROTECTED]
http://www.tornadolabs.com
> -----Original Message-----
> From: Discussion list for Java 3D API
> [mailto:[EMAIL PROTECTED]]On Behalf Of Veith, Gernot
> Sent: 01 September 1999 06:07
> To: [EMAIL PROTECTED]
> Subject: KeyEvents and Canvas3D
>
>
> Hi all,
>
> a testcase to show a problem using KeyEvents (and swing):
>
> Canvas3D gets brought to front if the app is containing
> a behavior that is listening to KeyEvents. This happens
> when the mouse pointer enters the screen area of Canvas3D
> the first time, even if no MouseEvents are registered.
> This will happen under awt or swing.
> Also the app doesn't recognize keyboard inputs, you first
> have to click into the canvas. This only happens under swing.
> Keep in mind that no MouseEvents are registered.
> The latter point is very annoying, as the user cannot start
> keyboard actions but first has to klick into the canvas.
> I hope future releases of Java3D will have a better collaboration
> with Swing or vice versa.
> ------------------------------code_starts_here--------------------
> ----------
> -----
>
> import java.awt.event.*;
> import com.sun.j3d.utils.geometry.ColorCube;
> import com.sun.j3d.utils.universe.*;
> import javax.media.j3d.*;
> import javax.vecmath.*;
> import javax.swing.*;
> import java.util.*;
>
> public class KeyEventTestCase extends JFrame
> {
> //this contains code from HelloUniverse
> public BranchGroup createSceneGraph()
> {
> BranchGroup objRoot = new BranchGroup();
> objRoot.addChild(new ColorCube(0.4));
> TestBehavior bhv = new TestBehavior();
> bhv.setSchedulingBounds(new BoundingSphere(new Point3d(),
> 1000));
> objRoot.addChild(bhv);
> objRoot.compile();
> return objRoot;
> }
>
> public KeyEventTestCase()
> {
> Canvas3D c = new Canvas3D(null);
> getContentPane().add("Center", c);
> BranchGroup scene = createSceneGraph();
> SimpleUniverse u = new SimpleUniverse(c);
> u.getViewingPlatform().setNominalViewingTransform();
> u.addBranchGraph(scene);
> }
>
> public static void main(String[] args)
> {
> KeyEventTestCase test = new KeyEventTestCase();
> test.setBounds(10,10,256,256);
> test.setVisible(true);
> }
>
> class TestBehavior extends Behavior
> {
> WakeupCondition condition;
> public void initialize()
> {
> condition = new WakeupOr(new WakeupCriterion[]
> { new
> WakeupOnAWTEvent(KeyEvent.KEY_PRESSED),
> new
> WakeupOnAWTEvent(KeyEvent.KEY_RELEASED),
>
> });
> wakeupOn(condition);
>
> }
>
> public void processStimulus(Enumeration e)
> {
> System.out.println("do nothing");
> wakeupOn(condition);
>
> }
> }
> }
> ------------------------------------------------------------------
> ----------
> -------
>
>
>
> Gernot Veith
> [EMAIL PROTECTED]
> http://www.janet.de
>
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