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SoGate.h

00001 /**************************************************************************\ 00002 * 00003 * This file is part of the Coin 3D visualization library. 00004 * Copyright (C) 1998-2003 by Systems in Motion. All rights reserved. 00005 * 00006 * This library is free software; you can redistribute it and/or 00007 * modify it under the terms of the GNU Lesser General Public License 00008 * version 2.1 as published by the Free Software Foundation. See the 00009 * file LICENSE.LGPL at the root directory of the distribution for 00010 * more details. 00011 * 00012 * If you want to use Coin for applications not compatible with the 00013 * LGPL, please contact SIM to acquire a Professional Edition license. 00014 * 00015 * Systems in Motion, Teknobyen, Abels Gate 5, 7030 Trondheim, NORWAY 00016 * http://www.sim.no support@sim.no Voice: +47 22114160 Fax: +47 22207097 00017 * 00018 \**************************************************************************/ 00019 00020 #ifndef COIN_SOGATE_H 00021 #define COIN_SOGATE_H 00022 00023 #include <Inventor/engines/SoSubEngine.h> 00024 #include <Inventor/fields/SoMField.h> 00025 #include <Inventor/fields/SoSFBool.h> 00026 #include <Inventor/fields/SoSFTrigger.h> 00027 00028 class SoEngineOutput; 00029 00030 00031 class COIN_DLL_API SoGate : public SoEngine { 00032 typedef SoEngine inherited; 00033 00034 SO_ENGINE_HEADER(SoGate); 00035 00036 public: 00037 static void initClass(void); 00038 SoGate(SoType type); 00039 00040 SoSFBool enable; 00041 SoSFTrigger trigger; 00042 SoMField * input; 00043 00044 SoEngineOutput * output; 00045 00046 protected: 00047 virtual void inputChanged(SoField * which); 00048 00049 private: 00050 SoGate(void); 00051 ~SoGate(); 00052 00053 virtual void evaluate(void); 00054 00055 virtual SbBool readInstance(SoInput * in, unsigned short flags); 00056 virtual void writeInstance(SoOutput * out); 00057 00058 SbBool initialize(const SoType inputfieldtype); 00059 00060 virtual void copyContents(const SoFieldContainer * from, 00061 SbBool copyconnections); 00062 00063 // SoGate instances uses a dynamic set of inputs and outputs, as 00064 // they are not common for all instances of the class (like for most 00065 // of the other engines). 00066 SoFieldData * dynamicinput; 00067 SoEngineOutputData * dynamicoutput; 00068 00069 // Avoid a g++/egcs warning due to the private default constructor. 00070 friend class dummy; 00071 }; 00072 00073 #endif // !COIN_SOGATE_H

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