#ifndef NUMMAGNITUDESQREUCLIDEAN_HH
#define NUMMAGNITUDESQREUCLIDEAN_HH
////////////////////////////////////////////////////////////////////////////
//! author="Robert Crida"
//! lib=NumMagnitude
//! date="22/4/1998"
//! userlevel=Normal
//! example=testNumMagnitude.cc
//! file="amma/PatternRec/FuncTools/Magnitude/NumMagnitudeSqrEuclidean.hh"
//! docentry="Numerical Methods.Magnitude Metrics.Implementation"
//! rcsid="$Id: NumMagnitudeSqrEuclidean.hh,v 1.5 2000/02/16 14:10:11 ees1cg Exp $"

#include "amma/Num/NumMagnitude.hh"
#include "amma/Num/NumMagnitudeSqrEuclideanB.hh"

//: Square Euclidean magnitude metric.
//
// Class for calculating squared Euclidean magnitude of a vector s=|X|^2.

class NumMagnitudeSqrEuclideanC
  : public NumMagnitudeC
{
public:
  NumMagnitudeSqrEuclideanC ()
    : NumMagnitudeC(*(new NumMagnitudeSqrEuclideanBC ())) {}
  //: Constructor takes no parameters

  NumMagnitudeSqrEuclideanC (BooleanT)
    : NumMagnitudeC(*(new NumMagnitudeSqrEuclideanBC ())) {}
  //: Constructor.
  
  static BooleanT IsA(const DPEntityC &pb)
    { return dynamic_cast<const NumMagnitudeSqrEuclideanBC *>(&pb.Body()) != 0; }
  //: Check if an object of this type.
  
  NumMagnitudeSqrEuclideanC(const DPProcessBaseC &pb)
    : NumMagnitudeC(pb)
    {
      if(!IsA(pb))
	Invalidate();
    }
  //: Base class constructor.
  

};

#endif