//======================================================================
//
// Description:
// Class for keeping info about the geometry of dch 
// To be used in digi and reco procedures
//
//------------------------------------------------------------------------

#ifndef PNDDCHSTRUCTURE_HH
#define PNDDCHSTRUCTURE_HH

#include <map>
#include <string>		
#include "TObject.h"
#include "TString.h"
		
class TGeoManager;
class TGeoCombiTrans;

class PndDchStructure: public TObject
{
	
public:
  static PndDchStructure* Instance();
  static PndDchStructure* Instance(TGeoManager*);
  
  const TGeoCombiTrans* GetTransMatrix(Int_t detID) const; 
  Double_t                 GetCellSize(Int_t detID) const;  
  
  virtual ~PndDchStructure();
  
  // Output to screen
  virtual void Print(const Option_t*) const;
  
 protected:
  PndDchStructure(TGeoManager*);		
 private:
  static PndDchStructure* fInstance;
  
  Int_t  GetDetectorID(TString nodePath);
  Bool_t SetWireOrientation(void );
  
  // map detID <-> det geo tranformation
  std::map<Int_t , TGeoCombiTrans* > fPlaneGeoTransMap;
  // map detID <-> det cell size
  std::map<Int_t , Double_t  > fCellSizeMap;
  
 public:	
  ClassDef(PndDchStructure,1)
};


#endif  // PNDDCHSTRUCTURE_HH