Functor.h

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/*
*/

#ifndef __SSF_FUNCTOR_H__
#define __SSF_FUNCTOR_H__

#include <Matrix.h>
#include "Time.h"
#include "OrbitState.h"
#include "AttitudeState.h"

namespace O_SESSAME {

class Functor
{
public:

      // two possible functions to call member function. virtual cause derived
      // classes will use a pointer to an object and a pointer to a member function
      // to make the function call
      virtual Vector Call(const ssfTime&, const OrbitState&, const AttitudeState&) const =0;        // call using function
};

class SpecificFunctor : public Functor
{
private:
      Vector (*fpt)(const ssfTime&, const OrbitState&, const AttitudeState&);           // pointer to member function

public:

      // constructor - takes pointer to a Function
      SpecificFunctor(Vector(*_fpt)(const ssfTime&, const OrbitState&, const AttitudeState&)):fpt(_fpt) {};

      // override function "Call"
      virtual Vector Call(const ssfTime &_ssfTime, const OrbitState &_orbState, const AttitudeState &_attState) const { return (*fpt)(_ssfTime, _orbState, _attState);};             // execute member function
};

template <class TClass> class ObjectFunctor : public Functor
{
private:
      TClass* pt2Object;                        
      Vector (TClass::*fpt)(const ssfTime&, const OrbitState&, const AttitudeState&);           
public:

      ObjectFunctor(TClass* _pt2Object, Vector(TClass::*_fpt)(const ssfTime&, const OrbitState&, const AttitudeState&)): pt2Object(_pt2Object),  fpt(_fpt) {};
      ObjectFunctor(): pt2Object(NULL),  fpt(NULL) {};
      void Set(TClass* _pt2Object, Vector(TClass::*_fpt)(const ssfTime&, const OrbitState&, const AttitudeState&)){ pt2Object = _pt2Object;  fpt=_fpt; };
      
      // override function "Call"
      virtual Vector Call(const ssfTime &_ssfTime, const OrbitState &_orbState, const AttitudeState &_attState) const { return (*pt2Object.*fpt)(_ssfTime, _orbState, _attState);};             // execute member function
};
} // close namespace O_SESSAME

#endif __SSF_FUNCTOR_H__

// Do not change the comments below - they will be added automatically by CVS
/*****************************************************************************
*       $Log: Functor.h,v $
*       Revision 1.9  2003/05/21 19:52:22  nilspace
*       Updated comments.
*       
*       Revision 1.8  2003/05/20 17:44:20  nilspace
*       Updated comments.
*       
*       Revision 1.7  2003/05/13 18:58:04  nilspace
*       Cleaned up comments.
*       
*       Revision 1.6  2003/04/27 22:04:34  nilspace
*       Created the namespace O_SESSAME.
*       
*       Revision 1.5  2003/04/25 18:55:45  nilspace
*       Implemented ObjectFunctor body (empty), and moved constructor assignments to inline with constructor.
*       
*       Revision 1.4  2003/04/25 13:45:53  nilspace
*       const'd Get() functions.
*       
*       Revision 1.3  2003/04/24 20:00:10  nilspace
*       Made all Call() functions const to prevent warnings.
*       
*       Revision 1.2  2003/04/24 13:51:10  nilspace
*       Added a Set function for setting the object & function afterwards, or by using the default constructor.
*       
*       Revision 1.1  2003/04/08 22:33:06  nilspace
*       Initial Submission
*       
*
******************************************************************************/

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