# 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 General Public License
    00008  *  ("GPL") version 2 as published by the Free Software Foundation.
    00009  *  See the file LICENSE.GPL at the root directory of this source
    00010  *  distribution for additional information about the GNU GPL.
    00011  *
    00012  *  For using Coin with software that can not be combined with the GNU
    00013  *  GPL, and for taking advantage of the additional benefits of our
    00014  *  support services, please contact Systems in Motion about acquiring
    00015  *  a Coin Professional Edition License.
    00016  *
    00017  *  See <URL:http://www.coin3d.org> for  more information.
    00018  *
    00019  *  Systems in Motion, Teknobyen, Abels Gate 5, 7030 Trondheim, NORWAY.
    00020  *  <URL:http://www.sim.no>.
    00021  *
    00022 \**************************************************************************/
    00023
    00024 #ifndef COIN_SOCALCULATOR_H
    00025 #define COIN_SOCALCULATOR_H
    00026
    00027 #include <Inventor/engines/SoSubEngine.h>
    00028 #include <Inventor/engines/SoEngineOutput.h>
    00029 #include <Inventor/fields/SoMFFloat.h>
    00030 #include <Inventor/fields/SoMFVec3f.h>
    00031 #include <Inventor/fields/SoMFString.h>
    00032 #include <Inventor/lists/SbList.h>
    00033
    00034 class SoCalculatorP;
    00035
    00036 class COIN_DLL_API SoCalculator : public SoEngine {
    00037   typedef SoEngine inherited;
    00038
    00039   SO_ENGINE_HEADER(SoCalculator);
    00040
    00041 public:
    00042   // inputs
    00043   SoMFFloat a, b, c, d, e, f, g, h;
    00044   SoMFVec3f A, B, C, D, E, F, G, H;
    00045   SoMFString expression;
    00046
    00047   // outputs
    00048   SoEngineOutput oa, ob, oc, od; // (SoMFFloat)
    00049   SoEngineOutput oA, oB, oC, oD; // (SoMFVec3f)
    00050
    00051   SoCalculator(void);
    00052
    00053   static void initClass(void);
    00054
    00055 protected:
    00056   ~SoCalculator(void);
    00057
    00058   virtual void inputChanged(SoField * which);
    00059
    00060 private:
    00061   virtual void evaluate(void);
    00062
    00063   static void readfieldcb(const char *name, float *data, void *cbdata);
    00064   static void writefieldcb(const char *name, float *data, int comp, void *cbdata);
    00065
    00066   void evaluateExpression(struct so_eval_node *node, const int fieldidx);
    00067   void findUsed(struct so_eval_node *node, char *inused, char *outused);
    00068
    00069   SoCalculatorP * pimpl;
    00070 };
    00071
    00072 #endif // !COIN_SOCALCULATOR_H