/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

// $Id$

/// \ingroup geometry
/// \class AliMUONGeometrySVMap
/// \brief Map between sensitive volumes and detection element Ids
///
/// As the detection element frame is different from the
/// frame of the sensitive volume(s) defined in Geant,
/// the sensitive volumes have to be mapped to the detection 
/// elements. In the map, fSVMap, the sensitive voolumes are specified
/// by the full path in the volume hierarchy, defined as:
///  /volname.copyNo/volName.copyNo1/...
///
/// The array of global positions of sensitive volumes fSVPositions
/// is included to make easier the verification of the assignements 
/// in the fSVMap.
///
/// Author: Ivana Hrivnacova, IPN Orsay

#ifndef ALI_MUON_GEOMETRY_SV_MAP_H
#define ALI_MUON_GEOMETRY_SV_MAP_H

#include <TObject.h>

#include "AliMUONStringIntMap.h"

class TGeoCombiTrans;
class TGeoTranslation;

class AliMUONGeometrySVMap : public TObject
{
  public:
    AliMUONGeometrySVMap(Int_t initSize);
    AliMUONGeometrySVMap();
    virtual ~AliMUONGeometrySVMap();

    // methods
    void Add(const TString& volumePath, 
             Int_t detElemId);  
    void AddPosition(const TString& volumePath, 
             const TGeoTranslation& globalPosition);  

    virtual void Clear(Option_t* /*option*/ ="");
    void ClearPositions();
    void SortPositions();
    virtual void Print(Option_t* option) const;
    void PrintPositions() const;
    void WriteMap(ofstream& out) const;
    
    // get methods
    Int_t  GetDetElemId(const TString& volumePath) const;

  protected:
    AliMUONGeometrySVMap(const AliMUONGeometrySVMap& rhs);

    // operators  
    AliMUONGeometrySVMap& operator 
      = (const AliMUONGeometrySVMap& rhs);
  
  private:
    const TGeoCombiTrans* FindByName(const TString& name) const;

    // data members
    AliMUONStringIntMap  fSVMap;       // Map of sensitive volume paths
                                       // and detector element id 
    TObjArray            fSVPositions; // The array of transformations

  ClassDef(AliMUONGeometrySVMap,1) // MUON sensitive volume map
};

#endif //ALI_MUON_GEOMETRY_TRANSFORM_STORE_H