/**
* PndMvdGeoHandling.h
* @author: t.stockmanns <t.stockmans@fz-juelich.de>
*
* @brief Class to access the naming information of the MVD
*
* To save memory not anylonger the full path of a volume is stored
* in each hit but an encrypted form of it (f.e. /1_1/34_2/101_1/).
* The first number is the volumeID comming from the GeoManager and
* the second number is the copy number.
* This class helps you converting the encrypted ID into the path
* information and vice versa.
* It needs the informations of the GeoManager. Therefore one has to
* ensure that either an initialized TGeoManager pointer is given in the
* constructor with the correct goemetry or a filename with the correct geoemetry ("CBMGeom")
* 
*/

#ifndef PNDMVDGEOHANDLING_H
#define PNDMVDGEOHANDLING_H

#include "TGeoManager.h"
#include "TString.h"
#include "TVector3.h"
#include <string>
#include <iostream>
#include <vector>

class PndMvdGeoHandling{
public:
    PndMvdGeoHandling();

    PndMvdGeoHandling(TString fileName);

    PndMvdGeoHandling(TGeoManager* aGeoMan)
  {if (aGeoMan == 0) std::cout << "-E- not a valid GeoManager" << std::endl;
   fGeoMan = aGeoMan;};

    ~PndMvdGeoHandling(){};
  TString GetCurrentID(); ///< returns the ID of the current node
  TString GetID(TString path); ///< for a given TGeoManager-path the ID is returned
  TString GetPath(TString id); ///< for a given ID the path is returned
  TString GetVolumeID(TString name); ///< returns the volume ID for a given volume name
  std::vector<TString> GetNamesLevel(Int_t level, TString startPath = "", bool fullPath = false);
  void GetOUVPath(TString path, TVector3& o, TVector3& u, TVector3& v); ///< for a volume given by its path the o, u, v vectors for the plane are returned
  void GetOUVId(TString id, TVector3& o, TVector3& u, TVector3& v); ///< for a volume given by its ID the o, u, v vectors for the plane are returned
  
  Bool_t cd(TString id); ///< as the cd command of TGeoManager just with the ID
  void FillLevelNames(); ///< fills vector<TString> fLevelNames with the names (or the paths) of the volumes down to the level given by fLevel

private:
  TGeoManager* fGeoMan;
  std::vector<TString> fLevelNames;
  Int_t fLevel;
  bool fFullPath;
  ClassDef(PndMvdGeoHandling,3);  
};

#endif