GFTrackCand.h

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/* Copyright 2008-2010, Technische Universitaet Muenchen,
   Authors: Christian Hoeppner & Sebastian Neubert

   This file is part of GENFIT.

   GENFIT is free software: you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published
   by the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   GENFIT is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with GENFIT.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GFTRACKCAND_H
#define GFTRACKCAND_H

#include <vector>
#include <set>
#include <iostream>
#include "assert.h"

#include "TObject.h"
#include "TVector3.h"

class GFTrackCand : public TObject {
public:

  // Constructors/Destructors ---------
  GFTrackCand();
  ~GFTrackCand();

  GFTrackCand(double curv, double dip, double inv, std::vector<unsigned int> detIDs, std::vector<unsigned int> hitIDs);
  /* @brief same as previous ctor, but with ordering parameters */
  GFTrackCand(double curv, double dip, double inv, std::vector<unsigned int> detIDs, std::vector<unsigned int> hitIDs, std::vector<double> rhos);

  /* @brief == operator does not check for rho */
  friend bool operator== (const GFTrackCand& lhs, const GFTrackCand& rhs);

  // Accessors -----------------------
  void getHit(unsigned int i, 
              unsigned int& detId,
              unsigned int& hitId) const {
        assert(i<getNHits());
        detId=fDetId.at(i);hitId=fHitId.at(i);
  }
  void getHit(unsigned int i, 
              unsigned int& detId,
              unsigned int& hitId,
              double &rho) const {
        assert(i<getNHits());
        detId=fDetId.at(i);hitId=fHitId.at(i);
        rho=fRho.at(i);
  }
  void getHitWithPlane(unsigned int i, 
              unsigned int& detId,
              unsigned int& hitId,
              unsigned int& planeId) const {
        assert(i<getNHits());
        detId=fDetId.at(i);hitId=fHitId.at(i);
        planeId=fPlaneId.at(i);
  }

  unsigned int getNHits() const {return fDetId.size();}
  double getCurv() const {return fCurv;}
  double getDip() const {return fDip;}
  bool inverted() const {return fInv;}
  std::vector<unsigned int> GetHitIDs(int detId=-1);
  std::vector<unsigned int> GetDetIDs() const {return fDetId;}
  std::vector<double>       GetRhos() const {return fRho;}
  std::set<unsigned int> GetUniqueDetIDs() const {
    std::set<unsigned int> retVal;
    for(unsigned int i=0;i<fDetId.size();++i){
      retVal.insert(fDetId.at(i));
    }
    return retVal;
  }
  int getMcTrackId() const {return fMcTrackId;}
  TVector3 getPosSeed() const {return fPosSeed;}
  TVector3 getDirSeed() const {return fDirSeed;}
  double getQoverPseed() const {return fQoverpSeed;}
  TVector3 getPosError() const {return fPosError;}
  TVector3 getDirError() const {return fDirError;}
  int getPdgCode() const {return fPdg;}
  // Modifiers -----------------------
  void addHit(unsigned int detId, unsigned int hitId, double rho=0., unsigned int planeId=0);
  void setCurv(double c){fCurv=c;}
  void setDip(double d){fDip=d;}
  void setInverted(bool f=true) {fInv=f;}
  void setMcTrackId(int i){fMcTrackId=i;}
  bool HitInTrack(unsigned int detId, unsigned int hitId);
  void setTrackSeed(const TVector3& pos,const TVector3& direction,const double qop){
    fPosSeed=pos;fDirSeed=direction;fQoverpSeed=qop;
  }
  void setComplTrackSeed(const TVector3& pos,const TVector3& mom, const int pdgCode, TVector3 posError = TVector3(1.0,1.0,1.0), TVector3 dirError = TVector3(1.0,1.0,1.0));
  void setPdgCode(int pdgCode){fPdg=pdgCode;}
  void append(const GFTrackCand&);

  // Operations ----------------------
  void reset();
  void Print() const ;

private:

  // Private Data Members ------------
  std::vector<unsigned int> fDetId;
  std::vector<unsigned int> fHitId;
  std::vector<unsigned int> fPlaneId;
  std::vector<double>       fRho;

  double fCurv; // curvature from pattern reco
  double fDip;  // dip angle from pattern reco
  bool fInv;  // true if inverted track

  TVector3 fPosSeed;  //seed value for the track: pos
  TVector3 fDirSeed;  //direction
  TVector3 fPosError;  //error on position seed given as a standard deviation
  TVector3 fDirError;  //error on direction seed given as a standard deviation
  double fQoverpSeed; //q/p
  int fMcTrackId; //if MC simulation, store the mct track id here
  int fPdg; // particle data groupe's id for a particle


  // Private Methods -----------------

public:
  ClassDef(GFTrackCand,5)
};

#endif