Adding AliMUONGeometryMisAligner

[u/mrichter/AliRoot.git] / MUON / AliMUONGeometryDEIndexing.cxx

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// $Id$
//
// Class AliMUONGeometryDEIndexing
// -------------------------------
// The class that provides conversion between the detection element Id
// and the index in the array.
// Used in storing DE transformations and segmentations.
// (See more in the header file.) 
//
// Author: Ivana Hrivnacova, IPN Orsay

#include <Riostream.h>
#include <TGeoMatrix.h>
#include <TObjString.h>

#include "AliLog.h"

#include "AliMUONGeometryDEIndexing.h"
#include "AliMUONConstants.h"

Int_t const AliMUONGeometryDEIndexing::fgkSeparator = 100; 

//
// static methods
//

//______________________________________________________________________________
Int_t AliMUONGeometryDEIndexing::GetModuleId(Int_t detElemId)
{
// Get module Id from detection element Id
// ---

  return detElemId/fgkSeparator - 1;
}  

//______________________________________________________________________________
Int_t AliMUONGeometryDEIndexing::GetDEIndex(Int_t detElemId)
{
/// Returns the index of detector element specified by detElemId

  return detElemId - detElemId/fgkSeparator*fgkSeparator;
 }  

//______________________________________________________________________________
Int_t AliMUONGeometryDEIndexing::GetDEId(Int_t moduleId, Int_t detElemIndex)
{
/// Returns the ID of detector element specified by index

  return ( moduleId + 1 ) * fgkSeparator + detElemIndex;
}