/data/refman/pasoursint/CMSSW_6_1_2_SLHC2/src/Alignment/TrackerAlignment/interface/TIBNameSpace.h

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#ifndef Alignment_CommonAlignment_TIBNameSpace_H
#define Alignment_CommonAlignment_TIBNameSpace_H

#include "CondFormats/Alignment/interface/Definitions.h"
#include "DataFormats/SiStripDetId/interface/TIBDetId.h"

namespace align
{
  namespace tib
  {
    const unsigned int sphs[] = {13, 15, 17, 19, 22, 23, 26, 28};

    inline unsigned int moduleNumber( align::ID );

    inline unsigned int stringNumber( align::ID );

    inline unsigned int surfaceNumber( align::ID );

    inline unsigned int halfShellNumber( align::ID );

    inline unsigned int layerNumber( align::ID );

    inline unsigned int halfBarrelNumber( align::ID );
  }
}

unsigned int align::tib::moduleNumber(align::ID id)
{
  return TIBDetId(id).module();
}

unsigned int align::tib::stringNumber(align::ID id)
{
  TIBDetId detId(id);

  std::vector<unsigned int> s = detId.string();
  // s[1]: surface lower = 1, upper = 2
  // s[2]: string no. increases with phi

  unsigned int l = 2 * (detId.layer() - 1) + s[1] - 1;

// String on +y surface: number = s                (1 to sphs)
// String in -y surface: number = 2 * sphs + 1 - s (1 to sphs)

  return s[2] > sphs[l] ? 2 * sphs[l] + 1 - s[2] : s[2];
}

unsigned int align::tib::surfaceNumber(align::ID id)
{
  return TIBDetId(id).string()[1];
}

unsigned int align::tib::halfShellNumber(align::ID id)
{
  TIBDetId detId(id);

  std::vector<unsigned int> s = detId.string();
  // s[1]: surface lower = 1, upper = 2
  // s[2]: string no. increases with phi

  unsigned int l = 2 * (detId.layer() - 1) + s[1] - 1;

  return s[2] > sphs[l] ? 1 : 2;
}

unsigned int align::tib::layerNumber(align::ID id)
{
  return TIBDetId(id).layer();
}

unsigned int align::tib::halfBarrelNumber(align::ID id)
{
  return TIBDetId(id).string()[0];
}

#endif