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00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States.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 **=======================================================================*/ 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_TIME_COUNTER_ 00051 #define _SO_TIME_COUNTER_ 00052 00053 #include <Inventor/engines/SoSubEngine.h> 00054 #include <Inventor/fields/SoSFShort.h> 00055 #include <Inventor/fields/SoSFFloat.h> 00056 #include <Inventor/fields/SoMFFloat.h> 00057 #include <Inventor/fields/SoSFTime.h> 00058 #include <Inventor/fields/SoSFBool.h> 00059 #include <Inventor/fields/SoSFTrigger.h> 00060 00134 class SoTimeCounter : public SoEngine { 00135 00136 SO_ENGINE_HEADER(SoTimeCounter); 00137 00138 public: 00142 SoSFShort min; 00146 SoSFShort max; 00150 SoSFShort step; 00154 SoSFBool on; 00158 SoSFFloat frequency; 00162 SoMFFloat duty; 00166 SoSFTime timeIn; 00170 SoSFTrigger syncIn; 00174 SoSFShort reset; 00175 00179 SoEngineOutput output; 00183 SoEngineOutput syncOut; 00184 00188 SoTimeCounter(); 00189 00190 private: 00191 00192 static void initClass(); 00193 static void exitClass(); 00194 00195 private: 00196 virtual void inputChanged(SoField *whichInput); 00197 00198 // Evaluation method 00199 virtual void evaluate(); 00200 00201 // Writes instance to SoOutput. Takes care of not writing out 00202 // connection to realTime that is created in constructor. 00203 virtual void writeInstance(SoOutput *out); 00204 00205 // Reads stuff into instance. Works around a problem with old 00206 // files that contain explicit references to the default 00207 // connection to realTime. 00208 virtual SbBool readInstance(SoInput *in, unsigned short flags); 00209 00210 // Destructor 00211 ~SoTimeCounter(); 00212 private: 00213 enum State { 00214 ON, // counting 00215 PAUSED // holding 00216 } state; 00217 enum Todo { 00218 RECALC = (1<<0), 00219 RESET = (1<<1), 00220 SYNC = (1<<2), 00221 PAUSE = (1<<3), 00222 UNPAUSE = (1<<4) 00223 }; 00224 unsigned int todo; 00225 SbTime period; // total cycle time 00226 int nStages; 00227 int curStage; 00228 int prevStage; 00229 struct Stage { 00230 int val; // counter value for stage 00231 float duty; // normalized fraction of cycle 00232 SbTime offset; // time from start of cycle 00233 } *stages; 00234 SbTime baseTime; // Starting time for cycle 00235 SbTime pauseOffset; // Starting time for cycle 00236 }; 00237 00238 #endif /* _SO_TIME_COUNTER_ */ 00239 00240