Projection.h

//-*-C++-*-
/***************************************************************************
 *
 *   Copyright (C) 2004 by Willem van Straten
 *   Licensed under the Academic Free License version 2.1
 *
 ***************************************************************************/
 
// psrchive/More/MEAL/MEAL/Projection.h
 
#ifndef __Projection_H
#define __Projection_H
 
#include "Reference.h"
 
namespace MEAL {
 
  class Function;
  class Composite;

  class Projection : public Reference::Able {
 
    friend class Composite;
 
  public:
    Projection (Function* model=0, Composite* meta=0);

    ~Projection ();

    unsigned get_imap (unsigned index) const;

    void get_imap (std::vector<unsigned>& get) const { get = imap; }

    Function* get_Function();

    void set_Function (Function* _model);
 
  protected:

    Reference::To<Function> model;

    std::vector<unsigned> imap;

    Reference::To<Composite, false> meta;
  };
 

  template<class Component>
  class Project : public Reference::To<Component> {
 
  public:

    Project (Component* model = 0)
    { 
      Reference::To<Component>::operator = (model);
      projection = new Projection (model);
    }

    const Project& operator = (Component* model) 
    {
      Reference::To<Component>::operator = (model);
      projection->set_Function (model);
      return *this; 
    }

    Projection* get_map ()
    {
      return projection;
    }

    const Projection* get_map () const
    {
      return projection;
    }

    unsigned get_imap (unsigned index) const
    {
      return projection->get_imap (index);
    }
 
  protected:

    Reference::To<Projection> projection;
 
  };
 
}
 
 
#endif