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00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States.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 : Gavin Bell (MMM yyyy) 00025 **=======================================================================*/ 00026 /*======================================================================= 00027 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.), *** 00028 *** AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT. *** 00029 *** *** 00030 *** REPRODUCTION, DISCLOSURE, OR USE, IN WHOLE OR IN PART, OTHER THAN AS *** 00031 *** SPECIFIED IN THE LICENSE ARE NOT TO BE UNDERTAKEN EXCEPT WITH PRIOR *** 00032 *** WRITTEN AUTHORIZATION OF FEI S.A.S. *** 00033 *** *** 00034 *** RESTRICTED RIGHTS LEGEND *** 00035 *** USE, DUPLICATION, OR DISCLOSURE BY THE GOVERNMENT OF THE CONTENT OF THIS *** 00036 *** WORK OR RELATED DOCUMENTATION IS SUBJECT TO RESTRICTIONS AS SET FORTH IN *** 00037 *** SUBPARAGRAPH (C)(1) OF THE COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHT *** 00038 *** CLAUSE AT FAR 52.227-19 OR SUBPARAGRAPH (C)(1)(II) OF THE RIGHTS IN *** 00039 *** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 52.227-7013. *** 00040 *** *** 00041 *** COPYRIGHT (C) 1996-2020 BY FEI S.A.S, *** 00042 *** BORDEAUX, FRANCE *** 00043 *** ALL RIGHTS RESERVED *** 00044 **=======================================================================*/ 00045 /*======================================================================= 00046 ** Modified by : VSG (MMM YYYY) 00047 **=======================================================================*/ 00048 00049 00050 #ifndef _SO_ELAPSED_TIME_ 00051 #define _SO_ELAPSED_TIME_ 00052 00053 #include <Inventor/engines/SoSubEngine.h> 00054 #include <Inventor/fields/SoSFBool.h> 00055 #include <Inventor/fields/SoSFFloat.h> 00056 #include <Inventor/fields/SoSFTime.h> 00057 #include <Inventor/fields/SoSFTrigger.h> 00058 00100 class SoElapsedTime : public SoEngine { 00101 00102 SO_ENGINE_HEADER(SoElapsedTime); 00103 00104 public: 00108 SoSFTime timeIn; 00112 SoSFFloat speed; 00116 SoSFBool on; 00120 SoSFBool pause; 00124 SoSFTrigger reset; 00125 00129 SoEngineOutput timeOut; 00130 00134 SoElapsedTime(); 00135 00136 private: 00137 00138 static void initClass(); 00139 static void exitClass(); 00140 00141 private: 00142 00143 // Detects when the running time input changed 00144 virtual void inputChanged(SoField *whichInput); 00145 00146 // Evaluation method 00147 virtual void evaluate(); 00148 00149 // Writes instance to SoOutput. Takes care of not writing out 00150 // connection to realTime that is created in constructor. 00151 virtual void writeInstance(SoOutput *out); 00152 00153 // Reads stuff into instance. Works around a problem with old 00154 // files that contain explicit references to the default 00155 // connection to realTime. 00156 virtual SbBool readInstance(SoInput *in, unsigned short flags); 00157 00158 // Destructor 00159 ~SoElapsedTime(); 00160 private: 00161 enum Todo { 00162 CHECK_ON = (1<<0), 00163 CHECK_PAUSE = (1<<1), 00164 RESET = (1<<2) 00165 }; 00166 enum State { 00167 STOPPED, // Clock is not running 00168 RUNNING, // Clock is running 00169 PAUSED // Clock is running, but output is frozen 00170 }; 00171 00172 enum State state; 00173 unsigned int todo; 00174 SbTime prevTimeOfDay; // Time of day when last 00175 // evaluate was called. 00176 SbTime prevTimeOut; // Last 'clock' time that 00177 // was output. 00178 float prevClockTime; // 'Clock' time when last 00179 // evaluate was called. 00180 00181 }; 00182 00183 #endif /* _SO_ELAPSED_TIME_ */ 00184 00185