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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.*;
import java.awt.event.*;
import java.util.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.geometry.Sphere;
/**
* Class: PickDragBehavior
*
* Description: Used to respond to mouse pick and drag events
* in the 3D window.
*
* Version: 1.0
*
*/
public class PickDragBehavior extends Behavior {
WakeupCriterion[] mouseEvents;
WakeupOr mouseCriterion;
int x, y;
int x_last, y_last;
double x_angle, y_angle;
double x_factor, y_factor;
Transform3D modelTrans;
Transform3D transformX;
Transform3D transformY;
TransformGroup transformGroup;
BranchGroup branchGroup;
Canvas2D canvas2D;
Canvas3D canvas3D;
Positions positions;
PickRay pickRay = new PickRay();
SceneGraphPath sceneGraphPath[];
Appearance highlight;
boolean parallel;
PickDragBehavior(Canvas2D canvas2D, Canvas3D canvas3D, Positions positions,
BranchGroup branchGroup, TransformGroup transformGroup) {
this.canvas2D = canvas2D;
this.canvas3D = canvas3D;
this.positions = positions;
this.branchGroup = branchGroup;
this.transformGroup = transformGroup;
modelTrans = new Transform3D();
transformX = new Transform3D();
transformY = new Transform3D();
Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
Color3f green = new Color3f(0.0f, 1.0f, 0.0f);
highlight = new Appearance();
highlight.setMaterial(new Material(green, black, green, white, 80.f));
parallel = true;
}
public void initialize() {
x = 0;
y = 0;
x_last = 0;
y_last = 0;
x_angle = 0;
y_angle = 0;
x_factor = .02;
y_factor = .02;
mouseEvents = new WakeupCriterion[2];
mouseEvents[0] = new WakeupOnAWTEvent(MouseEvent.MOUSE_DRAGGED);
mouseEvents[1] = new WakeupOnAWTEvent(MouseEvent.MOUSE_PRESSED);
mouseCriterion = new WakeupOr(mouseEvents);
wakeupOn (mouseCriterion);
}
public void processStimulus (Enumeration criteria) {
WakeupCriterion wakeup;
AWTEvent[] event;
int id;
int dx, dy;
while (criteria.hasMoreElements()) {
wakeup = (WakeupCriterion) criteria.nextElement();
if (wakeup instanceof WakeupOnAWTEvent) {
event = ((WakeupOnAWTEvent)wakeup).getAWTEvent();
for (int i=0; i<event.length; i++) {
id = event[i].getID();
if (id == MouseEvent.MOUSE_DRAGGED) {
x = ((MouseEvent)event[i]).getX();
y = ((MouseEvent)event[i]).getY();
dx = x - x_last;
dy = y - y_last;
x_angle = dy * y_factor;
y_angle = dx * x_factor;
transformX.rotX(x_angle);
transformY.rotY(y_angle);
modelTrans.mul(transformX, modelTrans);
modelTrans.mul(transformY, modelTrans);
transformGroup.setTransform(modelTrans);
x_last = x;
y_last = y;
}
else if (id == MouseEvent.MOUSE_PRESSED) {
x = x_last = ((MouseEvent)event[i]).getX();
y = y_last = ((MouseEvent)event[i]).getY();
Point3d eyePos = new Point3d();
canvas3D.getCenterEyeInImagePlate(eyePos);
Point3d mousePos = new Point3d();
canvas3D.getPixelLocationInImagePlate(x, y, mousePos);
Transform3D transform3D = new Transform3D();
canvas3D.getImagePlateToVworld(transform3D);
transform3D.transform(eyePos);
transform3D.transform(mousePos);
Vector3d mouseVec;
if (parallel) {
mouseVec = new Vector3d(0.f, 0.f, -1.f);
}
else {
mouseVec = new Vector3d();
mouseVec.sub(mousePos, eyePos);
mouseVec.normalize();
}
pickRay.set(mousePos, mouseVec);
sceneGraphPath = branchGroup.pickAllSorted(pickRay);
if (sceneGraphPath != null) {
for (int j=0; j<sceneGraphPath.length; j++) {
if (sceneGraphPath[j] != null) {
Node node = sceneGraphPath[j].getObject();
if (node instanceof Shape3D) {
try {
ID posID = (ID) node.getUserData();
if (posID != null) {
int pos = posID.get();
positions.set(pos, Positions.HUMAN);
canvas2D.repaint();
break;
}
}
catch (CapabilityNotSetException e) {
// Catch all CapabilityNotSet exceptions and
// throw them away, prevents renderer from
// locking up when encountering "non-selectable"
// objects.
}
}
}
}
}
}
}
}
}
wakeupOn (mouseCriterion);
}
}
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