// -------------------------------------------------------------------------
// -----                 CbmTofGeoHandler header file                  -----
// -----                 Created 20/11/12  by F. Uhlig                 -----
// -------------------------------------------------------------------------


/** CbmTofGeoHandler.h
 ** Helper class to extract information from the GeoManager which is
 ** needed in many other TOF classes. This helper class should be a
 ** single place to hold all these functions.
 ** @author F. Uhlig <f.uhlig@gsi.de>
 **/

#ifndef CBMTOFGEOHANDLER_H
#define CBMTOFGEOHANDLER_H 1

enum TofGeometryVersions {k07a,
                          k12a,
                          k12b,
                          k14a};

#include "CbmTofDetectorId.h"

#include "TObject.h"

#include <map>

class TGeoBBox;
class TGeoVolume;
class TGeoHMatrix;

class CbmTofGeoHandler : public TObject {
 public:

  /** Constructor **/
  CbmTofGeoHandler();


  /** Destructor **/
  ~CbmTofGeoHandler() {};

  Int_t GetUniqueDetectorId();
  Int_t GetUniqueDetectorId(TString volName);

  Int_t GetCellId(Int_t uniqueId);

  Int_t GetGeoVersion() {return fGeoVersion;}  
          
  Int_t Init(Bool_t isSimulation=kFALSE);

  Int_t GetDetSystemId(Int_t uniqueId);
  Int_t GetSMType(Int_t uniqueId);
  Int_t GetSModule(Int_t uniqueId);
  Int_t GetCounter(Int_t uniqueId);
  Int_t GetGap(Int_t uniqueId);
  Int_t GetCell(Int_t uniqueId);
  Int_t GetRegion(Int_t uniqueId);

  Float_t GetSizeX(TString volName);
  Float_t GetSizeY(TString volName);
  Float_t GetSizeZ(TString volName);
  Float_t GetX(TString volName);
  Float_t GetY(TString volName);
  Float_t GetZ(TString volName);

  void FillDetectorInfoArray(Int_t uniqueId);
  void NavigateTo(TString volName);

  // Implement Interface functions to the TGeoManager to be 
  // the same as for the VMC
  Int_t CurrentVolOffID(Int_t off, Int_t& copy) const;
  Int_t CurrentVolID(Int_t& copy) const;
  Int_t VolId(const Text_t* name) const;
  Int_t VolIdGeo(const char *name) const;
  const char* CurrentVolName() const;
  const char* CurrentVolOffName(Int_t off) const;

  Int_t CheckGeometryVersion(); 

 private:

  CbmTofDetectorId* fTofId;      //!
  Int_t            fGeoVersion; //!

  Bool_t fIsSimulation; //!

  Int_t fLastUsedDetectorID;  //!
  CbmTofDetectorInfo fDetectorInfoArray;  //!
  UInt_t fGeoPathHash;        //!
  TGeoVolume* fCurrentVolume; //! 
  TGeoBBox* fVolumeShape;     //!
  Double_t fGlobal[3];        //! Global centre of volume
  TGeoHMatrix* fGlobalMatrix; //!

 CbmTofGeoHandler(const CbmTofGeoHandler&);
 CbmTofGeoHandler operator=(const CbmTofGeoHandler&);

 ClassDef(CbmTofGeoHandler,1) 

};


#endif //CBMTOFGEOHANDLER_H