//-----------------------------------------------------------
// File and Version Information:
// $Id$
//
// Description:
//      Simple vertexing extrapolating all tracks to the Z-axis
//
// Environment:
//      Software developed for the Fopi GEM-TPC
//
// Author List:
//      Sverre Doerheim TUM            (original author)
//
//
//-----------------------------------------------------------

#ifndef TPCSIMPLEVERTEXINGTASK_HH
#define TPCSIMPLEVERTEXINGTASK_HH

// Base Class Headers ----------------
#include "FairTask.h"

// Collaborating Class Headers -------
#include <ostream> // remove if you do not need streaming op

// Collaborating Class DeclaratTpcVertexingTask::~TpcVertexingTask(){

#include "GFTrack.h"

class TClonesArray;
class TVector3;

class TpcSimpleVertexingTask : public FairTask {
public:

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

  // Operators

  // Accessors -----------------------


  // Modifiers -----------------------
  void SetTrackBranchName(const TString& name) {_trackBranchName = name;}
  void SetVertexBranchName(const TString& name) {_vertexBranchName = name;}

  void SetPersistence(Bool_t opt = kTRUE) {_persistence = opt;}
  void SetBeamAxis(TVector3 z1, TVector3 z2){_z1=z1;_z2=z2;}
  // Operations ----------------------
  virtual InitStatus Init();
  virtual void SetParContainers();
  virtual void Exec(Option_t* opt);


private:

  // Private Data Members ------------

  TString _trackBranchName;
  TClonesArray* _trackArray;

  Bool_t _persistence;
  TString _vertexBranchName;
  TClonesArray* _vertexArray;

  TVector3 _z1;
  TVector3 _z2;
  // Private Methods -----------------

public:
  ClassDef(TpcSimpleVertexingTask,1)
};

#endif

//--------------------------------------------------------------
// $Log$
//--------------------------------------------------------------