001: /*
002: * $RCSfile: PickDragBehavior.java,v $
003: *
004: * Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions
008: * are met:
009: *
010: * - Redistribution of source code must retain the above copyright
011: * notice, this list of conditions and the following disclaimer.
012: *
013: * - Redistribution in binary form must reproduce the above copyright
014: * notice, this list of conditions and the following disclaimer in
015: * the documentation and/or other materials provided with the
016: * distribution.
017: *
018: * Neither the name of Sun Microsystems, Inc. or the names of
019: * contributors may be used to endorse or promote products derived
020: * from this software without specific prior written permission.
021: *
022: * This software is provided "AS IS," without a warranty of any
023: * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
024: * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
025: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
026: * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
027: * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
028: * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
029: * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
030: * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
031: * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
032: * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
033: * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
034: * POSSIBILITY OF SUCH DAMAGES.
035: *
036: * You acknowledge that this software is not designed, licensed or
037: * intended for use in the design, construction, operation or
038: * maintenance of any nuclear facility.
039: *
040: * $Revision: 1.2 $
041: * $Date: 2007/02/09 17:21:37 $
042: * $State: Exp $
043: */
044:
045: package org.jdesktop.j3d.examples.four_by_four;
046:
047: import java.awt.*;
048: import java.awt.event.*;
049: import java.util.*;
050: import javax.media.j3d.*;
051: import javax.vecmath.*;
052: import com.sun.j3d.utils.geometry.Sphere;
053:
054: /**
055: * Class: PickDragBehavior
056: *
057: * Description: Used to respond to mouse pick and drag events
058: * in the 3D window.
059: *
060: * Version: 1.0
061: *
062: */
063: public class PickDragBehavior extends Behavior {
064:
065: WakeupCriterion[] mouseEvents;
066: WakeupOr mouseCriterion;
067: int x, y;
068: int x_last, y_last;
069: double x_angle, y_angle;
070: double x_factor, y_factor;
071: Transform3D modelTrans;
072: Transform3D transformX;
073: Transform3D transformY;
074: TransformGroup transformGroup;
075: BranchGroup branchGroup;
076: Canvas2D canvas2D;
077: Canvas3D canvas3D;
078: Positions positions;
079: PickRay pickRay = new PickRay();
080: SceneGraphPath sceneGraphPath[];
081: Appearance highlight;
082: boolean parallel;
083:
084: PickDragBehavior(Canvas2D canvas2D, Canvas3D canvas3D,
085: Positions positions, BranchGroup branchGroup,
086: TransformGroup transformGroup) {
087:
088: this .canvas2D = canvas2D;
089: this .canvas3D = canvas3D;
090: this .positions = positions;
091: this .branchGroup = branchGroup;
092: this .transformGroup = transformGroup;
093:
094: modelTrans = new Transform3D();
095: transformX = new Transform3D();
096: transformY = new Transform3D();
097:
098: Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
099: Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
100: Color3f green = new Color3f(0.0f, 1.0f, 0.0f);
101:
102: highlight = new Appearance();
103: highlight.setMaterial(new Material(green, black, green, white,
104: 80.f));
105:
106: parallel = true;
107: }
108:
109: public void initialize() {
110: x = 0;
111: y = 0;
112: x_last = 0;
113: y_last = 0;
114: x_angle = 0;
115: y_angle = 0;
116: x_factor = .02;
117: y_factor = .02;
118:
119: mouseEvents = new WakeupCriterion[2];
120: mouseEvents[0] = new WakeupOnAWTEvent(MouseEvent.MOUSE_DRAGGED);
121: mouseEvents[1] = new WakeupOnAWTEvent(MouseEvent.MOUSE_PRESSED);
122: mouseCriterion = new WakeupOr(mouseEvents);
123: wakeupOn(mouseCriterion);
124: }
125:
126: public void processStimulus(Enumeration criteria) {
127: WakeupCriterion wakeup;
128: AWTEvent[] event;
129: int id;
130: int dx, dy;
131:
132: while (criteria.hasMoreElements()) {
133: wakeup = (WakeupCriterion) criteria.nextElement();
134: if (wakeup instanceof WakeupOnAWTEvent) {
135: event = ((WakeupOnAWTEvent) wakeup).getAWTEvent();
136: for (int i = 0; i < event.length; i++) {
137: id = event[i].getID();
138: if (id == MouseEvent.MOUSE_DRAGGED) {
139:
140: x = ((MouseEvent) event[i]).getX();
141: y = ((MouseEvent) event[i]).getY();
142:
143: dx = x - x_last;
144: dy = y - y_last;
145:
146: x_angle = dy * y_factor;
147: y_angle = dx * x_factor;
148:
149: transformX.rotX(x_angle);
150: transformY.rotY(y_angle);
151:
152: modelTrans.mul(transformX, modelTrans);
153: modelTrans.mul(transformY, modelTrans);
154:
155: transformGroup.setTransform(modelTrans);
156:
157: x_last = x;
158: y_last = y;
159: } else if (id == MouseEvent.MOUSE_PRESSED) {
160:
161: x = x_last = ((MouseEvent) event[i]).getX();
162: y = y_last = ((MouseEvent) event[i]).getY();
163:
164: Point3d eyePos = new Point3d();
165: canvas3D.getCenterEyeInImagePlate(eyePos);
166:
167: Point3d mousePos = new Point3d();
168: canvas3D.getPixelLocationInImagePlate(x, y,
169: mousePos);
170:
171: Transform3D transform3D = new Transform3D();
172: canvas3D.getImagePlateToVworld(transform3D);
173:
174: transform3D.transform(eyePos);
175: transform3D.transform(mousePos);
176:
177: Vector3d mouseVec;
178: if (parallel) {
179: mouseVec = new Vector3d(0.f, 0.f, -1.f);
180: } else {
181: mouseVec = new Vector3d();
182: mouseVec.sub(mousePos, eyePos);
183: mouseVec.normalize();
184: }
185:
186: pickRay.set(mousePos, mouseVec);
187: sceneGraphPath = branchGroup
188: .pickAllSorted(pickRay);
189:
190: if (sceneGraphPath != null) {
191: for (int j = 0; j < sceneGraphPath.length; j++) {
192: if (sceneGraphPath[j] != null) {
193: Node node = sceneGraphPath[j]
194: .getObject();
195: if (node instanceof Shape3D) {
196: try {
197: ID posID = (ID) node
198: .getUserData();
199: if (posID != null) {
200: int pos = posID.get();
201: positions
202: .set(
203: pos,
204: Positions.HUMAN);
205: canvas2D.repaint();
206: break;
207: }
208: } catch (CapabilityNotSetException e) {
209: // Catch all CapabilityNotSet exceptions and
210: // throw them away, prevents renderer from
211: // locking up when encountering "non-selectable"
212: // objects.
213: }
214: }
215: }
216: }
217: }
218: }
219: }
220: }
221: }
222: wakeupOn(mouseCriterion);
223: }
224: }
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