#line 1 "/user/cvsspst/ees1cg/RAVL/RAVL-0.7/PatternRec/DataSet/Function1.hh"
// This file is part of RAVL, Recognition And Vision Library 
// Copyright (C) 2002, University of Surrey
// This code may be redistributed under the terms of the GNU Lesser
// General Public License (LGPL). See the lgpl.licence file for details or
// see http://www.gnu.org/copyleft/lesser.html
// file-header-ends-here
#ifndef RAVL_FUNCTION1_HEADER
#define RAVL_FUNCTION1_HEADER 1
//! rcsid="$Id: Function1.hh,v 1.4 2002/08/08 16:03:21 craftit Exp $"
//! lib=RavlPatternRec
//! author="Charles Galambos"
//! docentry="Ravl.Pattern Recognition.Functions"
//! file="Ravl/PatternRec/DataSet/Function1.hh"

#include "Ravl/PatternRec/Function.hh"

namespace RavlN {

  //! userlevel=Develop
  //: Map a vector to a single real value.
  
  class Function1BodyC 
    : public FunctionBodyC
  {
  public:
    Function1BodyC()
    { outputSize = 1; }
    //: Default constructor.

    Function1BodyC(istream &strm);
    //: Load from stream.
    
    Function1BodyC(BinIStreamC &strm);
    //: Load from binary stream.
    
    virtual bool Save (ostream &out) const;
    //: Writes object to stream, can be loaded using constructor
    
    virtual bool Save (BinOStreamC &out) const;
    //: Writes object to stream, can be loaded using constructor
    
    virtual VectorC Apply(const VectorC &data) const;
    //: Apply function to 'data'
    
    virtual RealT Apply1(const VectorC &data) const;
    //: Apply function to 'data'
    
  };

  //! userlevel=Normal
  //: Map a vector to a single real value.

  class Function1C 
    : public FunctionC
  {
  public:
    Function1C()
    {}
    //: Default constructor.
    // Creates an invalid handle.
    
    Function1C(istream &strm);
    //: Load from stream.
    
    Function1C(BinIStreamC &strm);
    //: Load from binary stream.
    
  protected:
    Function1C(Function1BodyC &bod)
      : FunctionC(bod)
    {}
    //: Body constructor.

    Function1C(Function1BodyC *bod)
      : FunctionC(bod)
    {}
    //: Body ptr constructor.
    
    Function1BodyC &Body()
    { return static_cast<Function1BodyC &>(FunctionC::Body()); }
    //: Access body.

    const Function1BodyC &Body() const
    { return static_cast<const Function1BodyC &>(FunctionC::Body()); }
    //: Access body.
    
  public:
    
    RealT Apply1(const VectorC &data) const
    { return Body().Apply1(data); }
    //: Apply function to 'data'
    
  };
  
  inline istream &operator>>(istream &strm,Function1C &obj) {
    obj = Function1C(strm);
    return strm;
  }
  //: Load from a stream.
  // Uses virtual constructor.
  
  inline ostream &operator<<(ostream &out,const Function1C &obj) {
    obj.Save(out);
    return out;
  }
  //: Save to a stream.
  // Uses virtual constructor.
  
  inline BinIStreamC &operator>>(BinIStreamC &strm,Function1C &obj) {
    obj = Function1C(strm);
    return strm;
  }
  //: Load from a binary stream.
  // Uses virtual constructor.
  
  inline BinOStreamC &operator<<(BinOStreamC &out,const Function1C &obj) {
    obj.Save(out);
    return out;
  }
  //: Save to a stream.
  // Uses virtual constructor.
  
}


#endif