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00001 /* 00002 * 00003 * Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved. 00004 * 00005 * This library is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU Lesser General Public 00007 * License as published by the Free Software Foundation; either 00008 * version 2.1 of the License, or (at your option) any later version. 00009 * 00010 * This library is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 * Lesser General Public License for more details. 00014 * 00015 * Further, this software is distributed without any warranty that it is 00016 * free of the rightful claim of any third person regarding infringement 00017 * or the like. Any license provided herein, whether implied or 00018 * otherwise, applies only to this software file. Patent licenses, if 00019 * any, provided herein do not apply to combinations of this program with 00020 * other software, or any other product whatsoever. 00021 * 00022 * You should have received a copy of the GNU Lesser General Public 00023 * License along with this library; if not, write to the Free Software 00024 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00025 * 00026 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 00027 * Mountain View, CA 94043, or: 00028 * 00029 * http://www.sgi.com 00030 * 00031 * For further information regarding this notice, see: 00032 * 00033 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/ 00034 * 00035 */ 00036 00037 00038 /* 00039 * Copyright (C) 1990,91,92 Silicon Graphics, Inc. 00040 * 00041 _______________________________________________________________________ 00042 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00043 | 00044 | $Revision: 1.1.1.1 $ 00045 | 00046 | Description: 00047 | This file contains the implementation of the Counter engine 00048 | 00049 | Classes: 00050 | SoCounter 00051 | 00052 | Author(s) : Ronen Barzel 00053 | 00054 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00055 _______________________________________________________________________ 00056 */ 00057 00058 #ifndef _SO_COUNTER_ 00059 #define _SO_COUNTER_ 00060 00061 #include <Inventor/system/SbSystem.h> 00062 #include <Inventor/engines/SoSubEngine.h> 00063 #include <Inventor/fields/SoSFShort.h> 00064 #include <Inventor/fields/SoSFBool.h> 00065 #include <Inventor/fields/SoSFTrigger.h> 00066 00069 00112 00113 00114 class INVENTOR_API SoCounter : public SoEngine { 00115 00116 SO_ENGINE_HEADER(SoCounter); 00117 00118 public: 00120 00121 00123 SoSFShort min; 00124 00126 SoSFShort max; 00127 00129 SoSFShort step; 00130 00132 SoSFTrigger trigger; 00133 00135 SoSFShort reset; 00136 00138 00140 00141 00143 SoEngineOutput output; 00144 00146 SoEngineOutput syncOut; 00147 00149 00151 SoCounter(); 00152 00153 SoINTERNAL public: 00154 00155 static void initClass(); 00156 00157 protected: 00158 virtual void inputChanged(SoField *whichInput); 00159 00160 private: 00161 enum Todo { 00162 RECALC = (1<<0), 00163 RESET = (1<<1), 00164 STEP = (1<<2) 00165 }; 00166 unsigned int todo; 00167 int nStages; 00168 int curStage; 00169 struct Stage { 00170 int val; 00171 } *stages; 00172 00174 ~SoCounter(); 00175 00177 virtual void evaluate(); 00178 }; 00179 00180 #endif /* _SO_COUNTER_ */