00001 /*======================================================================= 00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States. Use of a copyright notice is precautionary only and does not 00007 * imply publication or disclosure. 00008 * 00009 * U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND: 00010 * Use, duplication or disclosure by the Government is subject to restrictions 00011 * as set forth in FAR 52.227.19(c)(2) or subparagraph (c)(1)(ii) of the Rights 00012 * in Technical Data and Computer Software clause at DFARS 252.227-7013 and/or 00013 * in similar or successor clauses in the FAR, or the DOD or NASA FAR 00014 * Supplement. Contractor/manufacturer is Silicon Graphics, Inc., 00015 * 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311. 00016 * 00017 * THE CONTENT OF THIS WORK CONTAINS CONFIDENTIAL AND PROPRIETARY 00018 * INFORMATION OF SILICON GRAPHICS, INC. ANY DUPLICATION, MODIFICATION, 00019 * DISTRIBUTION, OR DISCLOSURE IN ANY FORM, IN WHOLE, OR IN PART, IS STRICTLY 00020 * PROHIBITED WITHOUT THE PRIOR EXPRESS WRITTEN PERMISSION OF SILICON 00021 * GRAPHICS, INC. 00022 **=======================================================================*/ 00023 /*======================================================================= 00024 ** Author : Paul S. Strauss (MMM yyyy) 00025 ** Modified by : Nick Thompson (MMM yyyy) 00026 **=======================================================================*/ 00027 /*======================================================================= 00028 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.), *** 00029 *** AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT. *** 00030 *** *** 00031 *** REPRODUCTION, DISCLOSURE, OR USE, IN WHOLE OR IN PART, OTHER THAN AS *** 00032 *** SPECIFIED IN THE LICENSE ARE NOT TO BE UNDERTAKEN EXCEPT WITH PRIOR *** 00033 *** WRITTEN AUTHORIZATION OF FEI S.A.S. *** 00034 *** *** 00035 *** RESTRICTED RIGHTS LEGEND *** 00036 *** USE, DUPLICATION, OR DISCLOSURE BY THE GOVERNMENT OF THE CONTENT OF THIS *** 00037 *** WORK OR RELATED DOCUMENTATION IS SUBJECT TO RESTRICTIONS AS SET FORTH IN *** 00038 *** SUBPARAGRAPH (C)(1) OF THE COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHT *** 00039 *** CLAUSE AT FAR 52.227-19 OR SUBPARAGRAPH (C)(1)(II) OF THE RIGHTS IN *** 00040 *** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 52.227-7013. *** 00041 *** *** 00042 *** COPYRIGHT (C) 1996-2020 BY FEI S.A.S, *** 00043 *** BORDEAUX, FRANCE *** 00044 *** ALL RIGHTS RESERVED *** 00045 **=======================================================================*/ 00046 /*======================================================================= 00047 ** Modified by : VSG (MMM YYYY) 00048 **=======================================================================*/ 00049 00050 00051 #ifndef _SO_PICK_ACTION_ 00052 #define _SO_PICK_ACTION_ 00053 00054 #include <Inventor/SbViewportRegion.h> 00055 #include <Inventor/actions/SoSubAction.h> 00056 00058 // 00059 // Class: SoPickAction 00060 // 00061 // Base class for picking actions. 00062 // 00064 00080 class SoPickAction : public SoAction { 00081 00082 SO_ACTION_HEADER(SoPickAction); 00083 00084 public: 00090 void setViewportRegion(const SbViewportRegion &newRegion); 00091 00095 const SbViewportRegion &getViewportRegion() const { return vpRegion; } 00096 00097 SoEXTENDER_Documented public: 00098 // Setting this flag to FALSE disables any pick culling that might 00099 // take place (as in SoSeparators). This can be used for nodes 00100 // (such as SoArray and SoMultipleCopy) that traverse their 00101 // children multiple times in different locations, thereby 00102 // avoiding computing bounding boxes each time. (This problem is 00103 // very severe when each bounding box traversal also traverses the 00104 // children N times.) The default setting is TRUE. 00105 void enableCulling(SbBool flag) { culling = flag; } 00106 SbBool isCullingEnabled() const { return culling; } 00107 00108 private: 00109 static void initClass(); 00110 static void exitClass(); 00111 00112 private: 00113 SbViewportRegion vpRegion; // Current viewport region 00114 00115 // Constructor takes viewport region. See comments for the 00116 // setViewportRegion() method. 00117 SoPickAction(const SbViewportRegion &viewportRegion); 00118 00119 // Destructor 00120 virtual ~SoPickAction(); 00121 00122 // Initiates action on graph 00123 virtual void beginTraversal(SoNode *node); 00124 00125 private: 00126 SbBool culling; // Pick culling enabled? 00127 00128 }; 00129 00130 #endif /* _SO_PICK_ACTION_ */ 00131 00132