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[u/mrichter/AliRoot.git] / PWG / FLOW / Base / AliFlowVector.cxx

/*************************************************************************
* Copyright(c) 1998-2008, ALICE Experiment at CERN, All rights reserved. *
*                                                                        *
* Author: The ALICE Off-line Project.                                    *
* Contributors are mentioned in the code where appropriate.              *
*                                                                        *
* Permission to use, copy, modify and distribute this software and its   *
* documentation strictly for non-commercial purposes is hereby granted   *
* without fee, provided that the above copyright notice appears in all   *
* copies and that both the copyright notice and this permission notice   *
* appear in the supporting documentation. The authors make no claims     *
* about the suitability of this software for any purpose. It is          *
* provided "as is" without express or implied warranty.                  * 
**************************************************************************/

#include "AliFlowVector.h"

//********************************************************************
// AliFlowVector:                                                    *
// Class to hold the flow vector and multiplicity for flow analysis. *
// Author: A. Bilandzic (anteb@nikhef.nl)                            *
//********************************************************************

ClassImp(AliFlowVector)

//________________________________________________________________________

AliFlowVector::AliFlowVector():
 fMult(0)
{
  // default contructor
}

//________________________________________________________________________

AliFlowVector::AliFlowVector(const AliFlowVector& aVector):
  TVector2(aVector),
  fMult(aVector.fMult)
{
  // copy constructor
}

 //________________________________________________________________________

AliFlowVector::AliFlowVector(const TVector2 &v, const Double_t m):
  TVector2(v),
  fMult(m)
{
  // custom constructor
}

//________________________________________________________________________ 

AliFlowVector::~AliFlowVector()
{
  // default constructor 
}

void AliFlowVector::SetMagPhi(double size, double angle, double mult)
{
   TVector2::SetMagPhi(size,angle);
   SetMult(mult);
}

//________________________________________________________________________

AliFlowVector& AliFlowVector::operator=(const AliFlowVector& aVector)
{
  // assignement operator
  if (this==&aVector) return *this;
  fX = aVector.X();
  fY = aVector.Y();
  fMult = aVector.GetMult();
  
  return *this;
}

//________________________________________________________________________

AliFlowVector& AliFlowVector::operator+=(const AliFlowVector& aVector)
{
  // addition operator
  fX += aVector.X(); 
  fY += aVector.Y(); 
  fMult += aVector.GetMult();
  
  return *this;
}

AliFlowVector& AliFlowVector::operator-=(const AliFlowVector& aVector)
{
  // addition operator
  fX -= aVector.X(); 
  fY -= aVector.Y(); 
  fMult -= aVector.GetMult();
  
  return *this;
}