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00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States.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 : Ronen Barzel (MMM yyyy) 00025 ** Modified by : Gavin Bell (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) 1996-2014 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_GATE_ 00052 #define _SO_GATE_ 00053 00054 #include <Inventor/SoDB.h> 00055 #include <Inventor/engines/SoSubEngine.h> 00056 #include <Inventor/fields/SoSFBool.h> 00057 #include <Inventor/fields/SoSFName.h> 00058 #include <Inventor/fields/SoSFTrigger.h> 00059 00061 // 00062 // Class: SoGate 00063 // 00064 // Gate engine class. A gate engine copies its input to its output, 00065 // when the "enable" field is true. It will also do a one-time copy 00066 // when the trigger field is touched. 00067 // 00069 00070 00111 class SoGate : public SoEngine { 00112 00113 SO_ENGINE_HEADER(SoGate); 00114 00115 public: 00119 SoGate(SoType mfInputType); 00120 00124 SoSFBool enable; 00128 SoSFTrigger trigger; 00129 00133 SoMField *input; 00134 00138 SoEngineOutput *output; 00139 00140 private: 00141 static void initClass(); 00142 static void exitClass(); 00143 00144 // Copies an instance that is encountered through a field connection 00145 virtual SoFieldContainer *copyThroughConnection() const; 00146 00147 private: 00148 ~SoGate(); 00149 virtual void inputChanged(SoField *whichInput); 00150 00151 // Copies the contents of the given node into this instance 00152 virtual void copyContents(const SoFieldContainer *fromFC, 00153 SbBool copyConnections); 00154 00156 virtual void evaluate(); 00157 00158 private: 00159 SoGate(); 00160 00161 // gate engines must write out their input type before writing 00162 // their fields, so these are overridden: 00163 virtual SbBool readInstance(SoInput *in, unsigned short flags); 00164 virtual void writeInstance(SoOutput *out); 00165 00166 void setup(SoType); 00167 00168 int conversionCase; 00169 00170 SoFieldData *myInputData; 00171 SoEngineOutputData *myOutputData; 00172 00173 SoSFName typeField; // Used when reading/writing 00174 }; 00175 00176 #endif /* _SO_GATE_ */ 00177 00178