// -------------------------------------------------------------------------
// -----                    FairRadGridManager source file             -----
// -----          original author                  D.Bertini           -----
// -----          adapted april 2010               O.Hartmann          -----
// -------------------------------------------------------------------------
#ifndef FAIRRADGRIDMANAGER_H
#define FAIRRADGRIDMANAGER_H 1


#include "Riosfwd.h"                    // for ostream
#include "Rtypes.h"                     // for Float_t, Double_t, Int_t, etc
#include "TLorentzVector.h"             // for TLorentzVector
#include "TObjArray.h"                  // for TObjArray

#include <iostream>                     // for basic_ostream::operator<<, etc

class FairMesh;
class TClonesArray;


/**
 * @class FairRadGridManager
 */


class FairRadGridManager
{

  public:
    /**
     * Default constructor.
     * Creates the singleton object of FairRadGridManager class.
     * The pointer to this object can be reached via FairRadGridManager::Instance().
     */
    FairRadGridManager();
    /**
     * Destructor.
     */
    virtual ~FairRadGridManager();

    /**
     * Class definition.
     */
    ClassDef(FairRadGridManager,1);


  private:

    FairRadGridManager(const FairRadGridManager&);
    FairRadGridManager& operator=(const FairRadGridManager&);

    static FairRadGridManager* fgInstance;

    /**
     * collection of point
     */
    TClonesArray*  fPointCollection;
    /**track index */
    Int_t          fTrackID;           //!
    /**volume id */
    Int_t          fVolumeID;          //!
    /**  entry position in global frame*/
    TLorentzVector fPosIn;             //!
    /**  exit position in global frame*/
    TLorentzVector fPosOut;            //!
    /**  momentum in*/
    TLorentzVector fMomIn;             //!
    /**  momentum out*/
    TLorentzVector fMomOut;            //!
    /**track time */
    Double_t       fTime;              //!
    /**track length */
    Double_t       fLength;            //!
    /** energy loss */
    Double_t       fELoss;             //!
    /** mass umber*/
    Float_t        fA;
    /** atomic number*/
    Float_t        fZmat;
    /**  density */
    Float_t        fDensity;
    /**radition length */
    Float_t        fRadl;
    /**absorption length */
    Float_t        fAbsl;
    /**estimator*/
    Int_t fEstimator;
    /** the mesh */
    TObjArray* fMeshList;

    static Double_t fLtmp;
  public:

    TObjArray* GetMeshList() { return fMeshList; }
    void AddMeshList ( TObjArray* list ) {
      std::cout << " grid manag " << list->GetEntriesFast() << std::endl;
      fMeshList = list;
    }
    Bool_t  IsTrackInside(TLorentzVector& vec, FairMesh* aMesh);
    Bool_t  IsTrackEntering(TLorentzVector& vec1,TLorentzVector& vec2);
    /** fill the 2D mesh */
    void FillMeshList();
    /**initialize the manager*/
    void  Init();
    /**reset*/
    void  Reset();
    /**
     * This function is used to access the methods of the class.
     * @return Pointer to the singleton FairRadGridManager object, created
     * with FairRadGridManager::FairRadGridManager().
     */
    static FairRadGridManager* Instance();
};

#endif