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/*
* $RCSfile$
*
* Copyright (c) 2004 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:
*
* - Redistribution 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 MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
* NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
* USING, MODIFYING OR DISTRIBUTING THIS 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 THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or
* intended for use in the design, construction, operation or
* maintenance of any nuclear facility.
*
* $Revision$
* $Date$
* $State$
*/
import java.awt.event.*;
import java.awt.AWTEvent;
import javax.media.j3d.*;
import java.util.Enumeration;
import javax.vecmath.*;
// Mover behavior class - used to allow viewer to move using arrow keys
class MoverBehavior extends Behavior
{
WakeupOnAWTEvent w1 = new WakeupOnAWTEvent(KeyEvent.KEY_PRESSED);
WakeupCriterion[] w2 = {w1};
WakeupCondition w = new WakeupOr(w2);
TransformGroup viewTransformGroup;
double rotation = 0.0; // holds current rotation radians
public void initialize() {
// Establish initial wakeup criteria
wakeupOn(w);
}
/**
* Override Behavior's stimulus method to handle the event.
*/
public void processStimulus(Enumeration criteria) {
WakeupOnAWTEvent ev;
WakeupCriterion genericEvt;
AWTEvent[] events;
while (criteria.hasMoreElements()) {
genericEvt = (WakeupCriterion) criteria.nextElement();
if (genericEvt instanceof WakeupOnAWTEvent) {
ev = (WakeupOnAWTEvent) genericEvt;
events = ev.getAWTEvent();
processManualEvent(events);
}
}
// Set wakeup criteria for next time
wakeupOn(w);
}
/**
* Process a keyboard event to move or rotate the viewer.
*/
void processManualEvent(AWTEvent[] events) {
for (int i = 0; i < events.length; ++i) {
if (events[i] instanceof KeyEvent) {
KeyEvent event = (KeyEvent)events[i];
if (event.getKeyCode() == KeyEvent.VK_EQUALS) {
continue;
}
Transform3D t = new Transform3D();
viewTransformGroup.getTransform(t);
Vector3f viewDir = new Vector3f(0f, 0f, -1f);
Vector3f translation = new Vector3f();
t.get(translation);
t.transform(viewDir);
if (event.getKeyCode() == KeyEvent.VK_UP) {
translation.x += viewDir.x;
translation.y += viewDir.y;
translation.z += viewDir.z;
}
else if (event.getKeyCode() == KeyEvent.VK_DOWN) {
translation.x -= viewDir.x;
translation.y -= viewDir.y;
translation.z -= viewDir.z;
}
else if (event.getKeyCode() == KeyEvent.VK_RIGHT) {
rotation += -.1;
}
else if (event.getKeyCode() == KeyEvent.VK_LEFT) {
rotation += .1;
}
t.rotY(rotation);
t.setTranslation(translation);
viewTransformGroup.setTransform(t);
}
}
}
/**
* Constructor
*/
public MoverBehavior(TransformGroup trans) {
viewTransformGroup = trans;
Bounds bound = new BoundingSphere(new Point3d(0.0,0.0,0.0),10000.0);
this.setSchedulingBounds(bound);
}
}
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