Stefan Dachwitz wrote:
>
> Hello Joerg,
>
> I wasn't able to find keyboard navigation in the examples you
> mention. Is there something wrong with my eyes?
> I downloaded the course notes, and I couldn�t find anything
> but keyboard modifiers to increase speed.
> I would be glad if you could point me to it!
>
> Cheers,
>
> Stefan
>
Dear Stefan,
I'm sorry to point you to the wrong place. In the piece of software I
wrote I've used David's viewer behaviors, but you are right these behaviors
are mouse behaviors. Attached, is the key navigation behavior I wrote,
which doesn't use wakeup on elapsedframes. So I had to appologize to all the
people, who downloaded 15MB. Mea culpa.
Keep things simple
Joerg
--
http://w5.cs.uni-sb.de/~baus
Email : [EMAIL PROTECTED]
Phone : +49-681-302-2016
Fax : +49-681-302-4136
import javax.media.j3d.Behavior;
import javax.media.j3d.TransformGroup;
import javax.media.j3d.Transform3D;
import javax.media.j3d.WakeupOnAWTEvent;
import java.awt.AWTEvent;
import java.awt.event.*;
import javax.vecmath.Vector3f;
public class MyKeyNavigatorBehavior extends Behavior {
private Transform3D tr, tgr;
private TransformGroup tg;
private WakeupOnAWTEvent wup;
private Vector3f vec;
private float step;
private double angle;
public MyKeyNavigatorBehavior(TransformGroup targetTG, float moveStep, double
rotStep ){
super();
this.tgr = new Transform3D();
this.tg = targetTG;
this.wup = new WakeupOnAWTEvent(KeyEvent.KEY_PRESSED);
this.step = moveStep;
this.angle = rotStep;
}
public void initialize(){
System.out.println("Key Behavior init");
wakeupOn(wup);
tg.getTransform(tgr);
System.out.println(tgr.toString());
}
public void processStimulus(java.util.Enumeration criteria){
KeyEvent event = (KeyEvent) (wup.getAWTEvent())[0];
int keyCode = event.getKeyCode();
if (keyCode == KeyEvent.VK_UP || keyCode == KeyEvent.VK_DOWN ||
keyCode == KeyEvent.VK_LEFT || keyCode == KeyEvent.VK_RIGHT)
{
switch (keyCode) {
case KeyEvent.VK_UP:
tr = new Transform3D();
vec = new Vector3f(0.0f,0.0f,-step);
tr.setTranslation(vec);
tg.getTransform(tgr);
tgr.mul(tr);
tg.setTransform(tgr);
wakeupOn(wup);
return;
case KeyEvent.VK_DOWN:
tr = new Transform3D();
vec = new Vector3f(0.0f,0.0f,step);
tr.setTranslation(vec);
tg.getTransform(tgr);
tgr.mul(tr);
tg.setTransform(tgr);
wakeupOn(wup);
return;
case KeyEvent.VK_LEFT:
tr = new Transform3D();
tr.rotY(Math.toRadians(angle));
tg.getTransform(tgr);
tgr.mul(tr);
tg.setTransform(tgr);
wakeupOn(wup);
return;
case KeyEvent.VK_RIGHT:
tr = new Transform3D();
tr.rotY(-Math.toRadians(angle));
tg.getTransform(tgr);
tgr.mul(tr);
tg.setTransform(tgr);
wakeupOn(wup);
return;
}
} else {wakeupOn(wup);}
}
}
