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SoCalculator.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_SOCALCULATOR_H 00021 #define COIN_SOCALCULATOR_H 00022 00023 #include <Inventor/engines/SoSubEngine.h> 00024 #include <Inventor/engines/SoEngineOutput.h> 00025 #include <Inventor/fields/SoMFFloat.h> 00026 #include <Inventor/fields/SoMFVec3f.h> 00027 #include <Inventor/fields/SoMFString.h> 00028 #include <Inventor/lists/SbList.h> 00029 00030 struct so_eval_node; 00031 00032 class COIN_DLL_API SoCalculator : public SoEngine { 00033 typedef SoEngine inherited; 00034 00035 SO_ENGINE_HEADER(SoCalculator); 00036 00037 public: 00038 // inputs 00039 SoMFFloat a, b, c, d, e, f, g, h; 00040 SoMFVec3f A, B, C, D, E, F, G, H; 00041 SoMFString expression; 00042 00043 // outputs 00044 SoEngineOutput oa, ob, oc, od; // (SoMFFloat) 00045 SoEngineOutput oA, oB, oC, oD; // (SoMFVec3f) 00046 00047 SoCalculator(void); 00048 00049 static void initClass(void); 00050 00051 protected: 00052 ~SoCalculator(void); 00053 00054 virtual void inputChanged(SoField * which); 00055 00056 private: 00057 virtual void evaluate(void); 00058 SbList <struct so_eval_node*> evaluatorList; 00059 00060 static void readfieldcb(const char *name, float *data, void *cbdata); 00061 static void writefieldcb(const char *name, float *data, int comp, void *cbdata); 00062 00063 void evaluateExpression(struct so_eval_node *node, const int fieldidx); 00064 void findUsed(struct so_eval_node *node, char *inused, char *outused); 00065 00066 float ta_th[8]; 00067 SbVec3f tA_tH[8]; 00068 00069 float a_h[8]; 00070 SbVec3f A_H[8]; 00071 float oa_od[4]; 00072 SbVec3f oA_oD[4]; 00073 }; 00074 00075 #endif // !COIN_SOCALCULATOR_H

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