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/*
* $RCSfile$
*
* Copyright (c) 2005 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.*;
import java.awt.event.*;
import java.util.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.behaviors.mouse.*;
/**
* MouseRotateY is a Java3D behavior object that lets users control the
* rotation of an object via a mouse.
* <p>
* To use this utility, first create a transform group that this
* rotate behavior will operate on. Then,
*<blockquote><pre>
*
* MouseRotateY behavior = new MouseRotateY();
* behavior.setTransformGroup(objTrans);
* objTrans.addChild(behavior);
* behavior.setSchedulingBounds(bounds);
*
*</pre></blockquote>
* The above code will add the rotate behavior to the transform
* group. The user can rotate any object attached to the objTrans.
*/
public class MouseRotateY extends MouseBehavior {
double y_angle;
double y_factor;
/**
* Creates a rotate behavior given the transform group.
* @param transformGroup The transformGroup to operate on.
*/
public MouseRotateY(TransformGroup transformGroup) {
super(transformGroup);
}
/**
* Creates a default mouse rotate behavior.
**/
public MouseRotateY() {
super(0);
}
/**
* Creates a rotate behavior.
* Note that this behavior still needs a transform
* group to work on (use setTransformGroup(tg)) and
* the transform group must add this behavior.
* @param flags interesting flags (wakeup conditions).
*/
public MouseRotateY(int flags) {
super(flags);
}
public void initialize() {
super.initialize();
y_angle = 0;
y_factor = .03;
if ((flags & INVERT_INPUT) == INVERT_INPUT) {
invert = true;
y_factor *= -1;
}
}
public double getYFactor() {
return y_factor;
}
public void setFactor( double factor) {
y_factor = factor;
}
public void processStimulus (Enumeration criteria) {
WakeupCriterion wakeup;
AWTEvent[] event;
int id;
int dx;
while (criteria.hasMoreElements()) {
wakeup = (WakeupCriterion) criteria.nextElement();
if (wakeup instanceof WakeupOnAWTEvent) {
event = ((WakeupOnAWTEvent)wakeup).getAWTEvent();
for (int i=0; i<event.length; i++) {
processMouseEvent((MouseEvent) event[i]);
if (((buttonPress)&&((flags & MANUAL_WAKEUP) == 0)) ||
((wakeUp)&&((flags & MANUAL_WAKEUP) != 0))){
id = event[i].getID();
if ((id == MouseEvent.MOUSE_DRAGGED) &&
!((MouseEvent)event[i]).isMetaDown() &&
!((MouseEvent)event[i]).isAltDown()){
x = ((MouseEvent)event[i]).getX();
dx = x - x_last;
if (!reset){
y_angle = dx * y_factor;
transformY.rotY(y_angle);
transformGroup.getTransform(currXform);
//Vector3d translation = new Vector3d();
//Matrix3f rotation = new Matrix3f();
Matrix4d mat = new Matrix4d();
// Remember old matrix
currXform.get(mat);
// Translate to origin
currXform.setTranslation(new Vector3d(0.0,0.0,0.0));
if (invert) {
currXform.mul(currXform, transformX);
currXform.mul(currXform, transformY);
} else {
currXform.mul(transformX, currXform);
currXform.mul(transformY, currXform);
}
// Set old translation back
Vector3d translation = new
Vector3d(mat.m03, mat.m13, mat.m23);
currXform.setTranslation(translation);
// Update xform
transformGroup.setTransform(currXform);
}
else {
reset = false;
}
x_last = x;
}
else if (id == MouseEvent.MOUSE_PRESSED) {
x_last = ((MouseEvent)event[i]).getX();
}
}
}
}
}
wakeupOn (mouseCriterion);
}
}
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