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1 /***************************************************************************** 2 * Virtual Mockup for Machine Vision 3 * Copyright (C) 2001-2003 Fabio R. de Miranda, João E. Kogler Jr., 4 * Carlos S. Santos. 5 * Virtual Mockup for Machine Vision Project funded by SENAC-SP 6 * 7 * Permission is granted to redistribute and/or modify this 8 * software under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * This software is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License (http://www.gnu.org/copyleft/lesser.html) 16 * for more details. 17 * 18 *****************************************************************************/ 19 20 package camera3d.event; 21 22 23 import camera3d.event.VcEvent; 24 25 /*** 26 * Event fired when a change is made to list of objects present in the scene graph. 27 * 28 * @author Fábio Roberto de Miranda e Carlos da Silva dos Santos 29 */ 30 public class SceneObjectsChangedEvent extends VcEvent { 31 /*** Signals that the action which fired the event is of unknown type. */ 32 public static final int UNKNOWN_TYPE = -1; 33 /*** Signals that the event was fired by the addition of one object to the scene.*/ 34 public static final int OBJECT_ADDED = 1; 35 /*** Signals that the event was fired by the removal of one object from the scene.*/ 36 public static final int OBJECT_REMOVED = 2; 37 38 private int type = UNKNOWN_TYPE; 39 40 /*** 41 * Creates a new SceneChangedEvent. 42 * @param source the object which originated the change in the scene 43 */ 44 public SceneObjectsChangedEvent(Object source) { 45 super(source); 46 // sets the type property for this object; 47 type = SceneObjectsChangedEvent.UNKNOWN_TYPE; 48 } 49 50 /*** 51 * Creates a new SceneChangeEvent and sets its type. 52 * @param source the object which originated the change in the scene. 53 * @param type identifies the type of action that fired the event. 54 */ 55 public SceneObjectsChangedEvent(Object source, int type){ 56 this(source); 57 this.type = type; 58 } 59 60 61 /*** 62 * Returns the type of action which fired the event. 63 * @return Can be one of OBJECT_ADDED, OBJECT_REMOVED or UNKNOWN_TYPE. 64 */ 65 public int getType(){ 66 return this.type; 67 } 68 69 /*** 70 * Sets the type of action which fired the event. 71 * @param type Can be one of OBJECT_ADDED, OBJECT_REMOVED or UNKNOWN_TYPE. 72 */ 73 public void setType(int type){ 74 this.type = type; 75 } 76 77 }

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