MuonDriftCircleErrorStrategy.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef MUON_MUONRIOONTRACK_MUONDRIFTCIRCLEERRORSTRATEGY_H
#define MUON_MUONRIOONTRACK_MUONDRIFTCIRCLEERRORSTRATEGY_H
 
#include <bitset>
#include "GaudiKernel/MsgStream.h"
#include <iostream>
 
namespace Muon {
typedef std::bitset<23> MuonDriftCircleErrorStrategyInput;
 
class MuonDriftCircleErrorStrategy {
public:
  enum Strategy {Moore=0, Muon=1, UnknownStrategy=0x7}; // FIXME - better names
  enum CreationParameter{ BroadError=3,// Bit 3. Create with broad errors. 
                          ScaledError, // Error scaling is turned on (this is applied after eveyrthing else)
                          FixedError, 
                          ParameterisedErrors, 
                          StationError,
                          ErrorAtPredictedPosition,
                          T0Refit, 
                          TofCorrection, 
                          PropCorrection, 
                          TempCorrection, 
                          MagFieldCorrection, 
                          SlewCorrection, 
                          BackgroundCorrection, 
                          Segment, 
                          FirstCalibWindowBit 
                        };
  static constexpr std::size_t nCalibWindowBits = 4; 
  MuonDriftCircleErrorStrategy() = default;
  MuonDriftCircleErrorStrategy(const MuonDriftCircleErrorStrategyInput& bits):m_bits(bits){} 
  void setStrategy(Strategy); 
  void setParameter(CreationParameter, bool value);
  void setCalibWindow(unsigned long); 
  
  bool creationParameter(CreationParameter) const;
  unsigned long calibWindow() const; 
  Strategy strategy() const;
 
  const MuonDriftCircleErrorStrategyInput& getBits() const { return m_bits; }
  
private:
  MuonDriftCircleErrorStrategyInput m_bits{}; 
};
}
 
inline
void
Muon::MuonDriftCircleErrorStrategy::setStrategy(Muon::MuonDriftCircleErrorStrategy::Strategy st) {
  unsigned int holder = static_cast<unsigned int>(st);
  m_bits[0] = holder&0x1;
  m_bits[1] = holder&0x2;
  m_bits[2] = holder&0x4;
}
 
inline
void
Muon::MuonDriftCircleErrorStrategy::setParameter(Muon::MuonDriftCircleErrorStrategy::CreationParameter cp, bool value) {
  m_bits[static_cast<unsigned int>(cp)] = value;
}
 
inline
void
Muon::MuonDriftCircleErrorStrategy::setCalibWindow(unsigned long config) {
  std::bitset<nCalibWindowBits> tmpconfig(config);
 
  // Copy temporary bitset into m_bits
  // Should do this with std::copy
  for (std::size_t itmp=0,i=FirstCalibWindowBit; itmp<nCalibWindowBits; ++itmp,++i) {
    m_bits[i] = tmpconfig[itmp];
  }
 
}
 
inline 
bool
Muon::MuonDriftCircleErrorStrategy::creationParameter(Muon::MuonDriftCircleErrorStrategy::CreationParameter cp) const {
  return m_bits[static_cast<unsigned int>(cp)];
}
 
inline
unsigned long
Muon::MuonDriftCircleErrorStrategy::calibWindow() const {
  std::bitset<nCalibWindowBits> tmpconfig;
 
  // Copy relevant part of m_bits into temporary bitset
  // Should do this with std::copy
  for (std::size_t itmp=0,i=FirstCalibWindowBit; itmp<nCalibWindowBits; ++itmp,++i) {
    tmpconfig[itmp] = m_bits[i];
  }
 
  return tmpconfig.to_ulong();
}
 
inline 
Muon::MuonDriftCircleErrorStrategy::Strategy
Muon::MuonDriftCircleErrorStrategy::strategy() const {
  switch (m_bits.to_ulong()&0x7){
  case 0:
    return Moore;
  case 1:
    return Muon;
  default:
    return UnknownStrategy;
  }
  return UnknownStrategy;
}
 
inline std::ostream& operator << ( std::ostream& sl, const Muon::MuonDriftCircleErrorStrategy& mdces)
{ 
  sl << "MuonDriftCircleErrorStrategy with strategy ";
  const Muon::MuonDriftCircleErrorStrategyInput myBits = mdces.getBits();
  switch (mdces.strategy()){
    case 0:
      sl << "Moore";
      break;
    case 1:
      sl << "Muon";
      break;
    default:
      sl << "Unknown Strategy";
  }
  sl << " and configuration bits " << myBits;
  sl << " including CalibWindow " << mdces.calibWindow() << std::endl;
  return sl;
}
 
inline MsgStream& operator << ( MsgStream& sl, const Muon::MuonDriftCircleErrorStrategy& mdces)
{ 
  sl << "MuonDriftCircleErrorStrategy with strategy ";
  const Muon::MuonDriftCircleErrorStrategyInput myBits = mdces.getBits();
  switch (mdces.strategy()){
    case 0:
      sl << "Moore";
      break;
    case 1:
      sl << "Muon";
      break;
    default:
      sl << "Unknown Strategy";
  }
  sl << " and configuration bits " << myBits; 
  sl << " including CalibWindow " << mdces.calibWindow() << std::endl;
  return sl;
}
 
 
#endif