LArWheelCalculator.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef GEOSPECIALSHAPES_LARWHEELCALCULATOR_H
#define GEOSPECIALSHAPES_LARWHEELCALCULATOR_H
 
 
 
// FMV and other checks
#ifndef PORTABLE_LAR_SHAPE
// For athena
  #include "CxxUtils/features.h"
#else
// When run outside of Athena
  #define HAVE_VECTOR_SIZE_ATTRIBUTE 1
  #ifdef __APPLE__
    #define CXXUTILS_FEATURES_H 1
  #endif
#endif
 
#include "CLHEP/Vector/ThreeVector.h"
#if !defined(XAOD_STANDALONE) && !defined(PORTABLE_LAR_SHAPE)
    #include "AthenaKernel/CLASS_DEF.h"
#endif // XAOD_STANDALONE
 
#include "vec_parametrized_sincos.h"
#include "GeoSpecialShapes/LArWheelCalculatorEnums.h"
 
#include <array>
#include <vector>
 
#define LARWC_SINCOS_POLY 5
 
struct EMECData;
 
//#define HARDDEBUG
 
// Forward declarations
namespace LArWheelCalculator_Impl {
  class IDistanceCalculator;
  class DistanceCalculatorSaggingOff;
  class DistanceCalculatorSaggingOn;
 
  class IFanCalculator;
  class ModuleFanCalculator;
  template <typename SaggingType> class WheelFanCalculator;
  template <typename SaggingType> class DistanceToTheNeutralFibre_OfFan;
}

class LArWheelCalculator
{
 
    friend class LArWheelCalculator_Impl::DistanceCalculatorSaggingOff;
    friend class LArWheelCalculator_Impl::DistanceCalculatorSaggingOn;
    friend class LArWheelCalculator_Impl::ModuleFanCalculator;
    template <typename SaggingType> friend class LArWheelCalculator_Impl::WheelFanCalculator;
    template <typename SaggingType> friend class LArWheelCalculator_Impl::DistanceToTheNeutralFibre_OfFan;
 
  public:
 
  LArWheelCalculator(const EMECData & emecData, LArG4::LArWheelCalculator_t a_wheelType, int zside = 1);
    virtual ~LArWheelCalculator();
 
    LArWheelCalculator (const LArWheelCalculator&) = delete;
    LArWheelCalculator& operator= (const LArWheelCalculator&) = delete;
 
    static const char *LArWheelCalculatorTypeString(LArG4::LArWheelCalculator_t);
    double GetFanHalfThickness(LArG4::LArWheelCalculator_t) const;
 
    // "Get constant" methods:
    double GetWheelThickness() const { return m_WheelThickness; }
    double GetdWRPtoFrontFace() const { return m_dWRPtoFrontFace; }
    double GetStraightStartSection() const { return m_StraightStartSection; }
    virtual LArG4::LArWheelCalculator_t type() const { return m_type; }
    // "zShift" is the z-distance (cm) that the EM endcap is shifted
    // (due to cabling, etc.)
    int GetAtlasZside() const { return m_AtlasZside; }
    double zShift() const { return m_zShift; }
    double GetFanFoldRadius() const { return m_FanFoldRadius; }
    double GetZeroFanPhi() const { return m_ZeroFanPhi; }
    int GetNumberOfWaves() const { return m_NumberOfWaves; }
    int GetNumberOfHalfWaves() const { return m_NumberOfHalfWaves; }
    int GetNumberOfFans() const { return m_NumberOfFans; }
 
    double GetActiveLength() const { return m_ActiveLength; }
    double GetFanStepOnPhi() const { return m_FanStepOnPhi; }
    double GetHalfWaveLength() const { return m_HalfWaveLength; }
    double GetQuarterWaveLength() const { return m_QuarterWaveLength; }
    double GetWheelRefPoint() const { return m_zWheelRefPoint; }
    double GetFanHalfThickness() const { return m_FanHalfThickness; }
 
    bool GetisModule() const { return m_isModule; }
    bool GetisElectrode() const { return m_isElectrode; }
    bool GetisInner() const { return m_isInner; }
    bool GetisBarrette() const { return m_isBarrette; }
    bool GetisBarretteCalib() const { return m_isBarretteCalib; }
 
    double GetWheelInnerRadius(std::array<double,2> & rInner) const;
    double GetWheelInnerRadius(std::array<double,3> & rInner) const;
    void GetWheelOuterRadius(std::array<double,2> & rOuter) const;
    void GetWheelOuterRadius(std::array<double,3> & rOuter) const;
 
    double GetElecFocaltoWRP() const { return m_dElecFocaltoWRP; }
    // "set constant" method:
 
    int GetFirstFan() const { return m_FirstFan; }
    int GetLastFan() const { return m_LastFan; }
 
    int GetStartGapNumber() const { return m_ZeroGapNumber; }
    void SetStartGapNumber(int n) { m_ZeroGapNumber = n; }


    double DistanceToTheNearestFan(CLHEP::Hep3Vector &p, int & out_fan_number) const;

    double DistanceToTheNeutralFibre(const CLHEP::Hep3Vector &p, int fan_number) const;
 
    CLHEP::Hep3Vector NearestPointOnNeutralFibre(const CLHEP::Hep3Vector &p,
                                                 int fan_number) const;
    std::vector<double> NearestPointOnNeutralFibre_asVector(const CLHEP::Hep3Vector &p,
                                                            int fan_number) const;
    int GetPhiGap(const CLHEP::Hep3Vector &p) const { return GetPhiGapAndSide(p).first; }
    int PhiGapNumberForWheel(int) const;
    std::pair<int, int> GetPhiGapAndSide(const CLHEP::Hep3Vector &p) const;
    double AmplitudeOfSurface(const CLHEP::Hep3Vector& P, int side, int fan_number) const;

 
  private:
    LArG4::LArWheelCalculator_t m_type;
 
    int m_AtlasZside;
    bool m_SaggingOn; // !
    bool m_phiRotation;
    bool m_slant_use_default;
    std::array<double,5> m_slant_parametrization; // pol4
    std::array<double,LARWC_SINCOS_POLY+1> m_sin_parametrization;
    std::array<double,LARWC_SINCOS_POLY+1> m_cos_parametrization;
    std::vector<std::vector<double> > m_sagging_parameter; // !
 
    double m_ActiveLength;
    double m_StraightStartSection;
    double m_dWRPtoFrontFace;
    double m_HalfGapBetweenWheels;
    double m_zWheelRefPoint;
    double m_dMechFocaltoWRP;
    double m_dElecFocaltoWRP;
    double m_rOuterCutoff;
    double m_eta_hi, m_eta_mid, m_eta_low;
    double m_zShift;
 
    double m_WheelThickness;
    double m_HalfWheelThickness;
    double m_zWheelFrontFace, m_zWheelBackFace;
 
    double m_QuarterWaveLength;
    double m_HalfWaveLength;
    double m_FanFoldRadius;
    double m_ZeroFanPhi;
    double m_ZeroFanPhi_ForDetNeaFan;
    double m_FanStepOnPhi;
    int m_NumberOfWaves;
    int m_NumberOfHalfWaves;
    int m_NumberOfFans;
    //int m_HalfNumberOfFans; removed because unused. DM 2015-07-30
    double m_FanHalfThickness;
    int m_ZeroGapNumber;
    int m_FirstFan;
    int m_LastFan;
 
    bool m_isModule;
    bool m_isElectrode;
    bool m_isInner;
    bool m_isBarrette;
    bool m_isBarretteCalib;
 
 
    double m_leadThicknessInner;
    double m_leadThicknessOuter;
    double m_steelThickness;
    double m_glueThickness;
    double m_electrodeTotalThickness;
    double m_coldContraction;
    double m_electrodeInvContraction;
 
 
    // int m_fan_number; // break thread-safety -> removed DM 2015-07-30
 
    void outer_wheel_init(const EMECData &);
    void inner_wheel_init(const EMECData &);
    void module_init();
 
  public:
 
    /*void set_m_fan_number(const int &fan_number)
    {
      m_fan_number = fan_number;
      if(m_fan_number < 0) m_fan_number += m_NumberOfFans;
      m_fan_number += m_ZeroGapNumber;
      if(m_fan_number >= m_NumberOfFans) m_fan_number -= m_NumberOfFans;
    }*/
    int adjust_fan_number(int fan_number) const {
      int res_fan_number = fan_number;
      if(res_fan_number < 0) res_fan_number += m_NumberOfFans;
      res_fan_number += m_ZeroGapNumber;
      if(res_fan_number >= m_NumberOfFans) res_fan_number -= m_NumberOfFans;
      return res_fan_number;
    }

    double parameterized_slant_angle(double) const;
 
  private:
 
    void parameterized_sincos(const double, double &, double &) const;
    void parameterized_sin(const double, double &, double &) const;
 
  private:
 
    LArWheelCalculator_Impl::IDistanceCalculator *m_distanceCalcImpl;
    LArWheelCalculator_Impl::IFanCalculator *m_fanCalcImpl;
    void fill_sincos_parameterization();
    vsincos_par m_vsincos_par{};
};
 
#if !defined(XAOD_STANDALONE) && !defined(PORTABLE_LAR_SHAPE)
    //using the macro below we can assign an identifier (and a version)
    //This is required and checked at compile time when you try to record/retrieve
    CLASS_DEF(LArWheelCalculator , 900345678 , 1)
#endif // XAOD_STANDALONE
 
#endif // GEOSPECIALSHAPES_LARWHEELCALCULATOR_H