MuonDetDescr/MuonReadoutGeometry/MuonReadoutGeometry/TgcReadoutElement.icc

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
#ifndef MUONREADOUTGEOMETRY_TGCREADOUTELEMENT_ICC
#define MUONREADOUTGEOMETRY_TGCREADOUTELEMENT_ICC
 
namespace MuonGM {
    inline const std::string& TgcReadoutElement::readOutName() const { return m_readout_name; }
 
    
    inline bool TgcReadoutElement::isEndcap() const { return getStationType()[2] == 'E'; }
    inline bool TgcReadoutElement::isForward() const { return  getStationType()[2] == 'F'; }
    inline bool TgcReadoutElement::isDoublet() const { return nGasGaps() == 2; }
    inline bool TgcReadoutElement::isTriplet() const { return nGasGaps() == 3; }
 
    inline double TgcReadoutElement::wirePitch() const { return m_readoutParams->wirePitch(); }
    inline int TgcReadoutElement::nPhiChambers() const { return m_readoutParams->nPhiChambers(); }
    inline int TgcReadoutElement::nPhiSectors() const { return m_stIdxT4E  == getStationIndex() ? 36 : nPhiChambers(); }
    
    inline double TgcReadoutElement::chamberLocPhiMin() const { return m_locMinPhi; }
    inline double TgcReadoutElement::chamberLocPhiMax() const { return m_locMaxPhi; }
 
 
    inline int TgcReadoutElement::nGasGaps() const { return m_readoutParams->nGaps(); }
    inline int TgcReadoutElement::nStrips(int gasGap) const { return m_readoutParams->nStrips(gasGap); }
    inline int TgcReadoutElement::nWires(int gasGap) const { return m_readoutParams->totalWires(gasGap); }
    inline int TgcReadoutElement::nWires(int gasGap, int gang) const { return m_readoutParams->nWires(gasGap, gang); }
    inline int TgcReadoutElement::nWireGangs(int gasGap) const { return m_readoutParams->nWireGangs(gasGap); }
    inline double TgcReadoutElement::nPitchesToGang(int gasGap, int gang) const { return m_readoutParams->nPitchesToGang(gasGap, gang); }
    inline double TgcReadoutElement::gangThickness() const { return m_readoutParams->gangThickness(); }
    inline int TgcReadoutElement::chamberType() const { return m_readoutParams->chamberType(); }
    
    inline double TgcReadoutElement::chamberWidth(double z) const { 
        return getSsize() + (0.5 *length() +z) * (getLongSsize() - getSsize()) / length(); 
    }
    inline double TgcReadoutElement::wireGangLocalX(const int gasGap, const int gang) const {
        return wirePitch()  * nPitchesToGang(gasGap, gang);
    }
    
    
    inline double TgcReadoutElement::stripLength() const { return m_Rsize; }
    inline double TgcReadoutElement::physicalDistanceFromBase() const { return m_readoutParams->physicalDistanceFromBase(); }
    inline double TgcReadoutElement::stripPosOnLargeBase(int strip, int gasGap) const { 
        return m_readoutParams->stripPositionOnLargeBase(strip, gasGap);
    }
    inline double TgcReadoutElement::stripPosOnShortBase(int strip, int gasGap) const { 
        return m_readoutParams->stripPositionOnShortBase(strip, gasGap);
    }
    inline double TgcReadoutElement::wireLength(int wire) const {
        return m_Ssize + (wire - 1) * wirePitch() * (m_LongSsize - m_Ssize) / m_Rsize;
    }
 
    inline const TgcReadoutParams* TgcReadoutElement::getReadoutParams() const { return m_readoutParams.get(); }
 
    inline std::pair<double, int> TgcReadoutElement::stripNumberToFetch(int gasGap, int inStrip) const {
        const bool swapStrip{!((getStationEta() > 0 && gasGap == 1) || (getStationEta() < 0 && gasGap != 1) || 
                                m_readoutParams->nStripLayers() > 1)};
        const bool flip = gasGap !=1 && m_readoutParams->nStripLayers() == 1;
        const int pickStrip = swapStrip ? 33 - inStrip : inStrip;
        return std::make_pair(-1. + 2.*flip, pickStrip);
    }  
  
    /// Override of functions declared as interfaces in the parent classes
    inline int TgcReadoutElement::layerHash(const Identifier& id) const { return m_idHelper.gasGap(id) - 1; }
    
    inline int TgcReadoutElement::surfaceHash(const Identifier& id) const {
        return surfaceHash(m_idHelper.gasGap(id) ,m_idHelper.isStrip(id));
    }
    inline int TgcReadoutElement::surfaceHash(int gasGap, bool isStrip) { return 2 * (gasGap -1) + isStrip; }
    inline int TgcReadoutElement::boundaryHash(const Identifier& id) const { return (measuresPhi(id) ? 0 : 1); }
    inline bool TgcReadoutElement::measuresPhi(const Identifier& id) const { return m_idHelper.isStrip(id); }
    inline int TgcReadoutElement::numberOfLayers(bool) const { return nGasGaps(); }
    inline int TgcReadoutElement::numberOfStrips(const Identifier& id) const { return numberOfStrips(m_idHelper.gasGap(id), 
                                                                                                     m_idHelper.isStrip(id));
    }
    inline int TgcReadoutElement::numberOfStrips(int layer, bool isStrip) const { return isStrip ? nStrips(layer) : 
                                                                                                   nWireGangs(layer);
    }
    inline double TgcReadoutElement::stripLocalX(const int gasGap,
                                                 const int stripNum,
                                                 const double locY,
                                                 const double refPoint) const {
        return refPoint + (locY != 0. ? locY * m_stripSlope * (stripPosOnLargeBase(stripNum, gasGap) - stripPosOnShortBase(stripNum, gasGap)) : 0.);
    }
 
    inline const Amg::Transform3D& TgcReadoutElement::localToGlobalTransf(const Identifier& id) const { 
        return transform(surfaceHash(id)); 
    }
    inline Amg::Transform3D TgcReadoutElement::globalToLocalTransf(const Identifier& id) const { 
        return transform(id).inverse(); 
    }
 
    inline Amg::Vector3D TgcReadoutElement::wireGangPos(int gasGap, int gang) const {
        return transform(surfaceHash(gasGap, false)) * localWireGangPos(gasGap, gang);
    }
 
    inline Amg::Vector3D TgcReadoutElement::wireGangPos(const Identifier& id) const {
        return wireGangPos(m_idHelper.gasGap(id),
                           m_idHelper.channel(id));
    }
 
    inline Amg::Vector3D TgcReadoutElement::localWireGangPos(const Identifier& id) const {
        return localWireGangPos(m_idHelper.gasGap(id),
                                m_idHelper.channel(id));
    }
    inline Amg::Vector3D TgcReadoutElement::localWireGangPos(int gasGap, int gang) const {
        return wireGangLocalX(gasGap, gang) * Amg::Vector3D::UnitX();
    }
 
    inline Amg::Vector3D TgcReadoutElement::stripPos(const Identifier& id) const {
        return stripPos(m_idHelper.gasGap(id), m_idHelper.channel(id));
    }
    inline Amg::Vector3D TgcReadoutElement::stripPos(int gasGap, int strip) const {
        return transform(surfaceHash(gasGap, true)) * localStripPos(gasGap, strip);
    }
 
    inline Amg::Vector3D TgcReadoutElement::localStripPos(int gasGap, int strip) const {
        return stripCenterLocX(gasGap, strip, 0.) * Amg::Vector3D::UnitX();
    }
    inline Amg::Vector3D TgcReadoutElement::localStripPos(const Identifier& id) const {
        return localStripPos(m_idHelper.gasGap(id), m_idHelper.channel(id));
    }
    inline Amg::Vector3D TgcReadoutElement::localStripDir(int gasGap, int strip) const{
        const double halfeight = 0.5 *getRsize();
        return  (Amg::Vector3D{stripCenterLocX(gasGap,strip, halfeight), halfeight,0} -
                 Amg::Vector3D{stripCenterLocX(gasGap,strip, -halfeight), -halfeight,0}).unit();
 
    }
    inline Amg::Vector3D TgcReadoutElement::localStripDir(const Identifier& id) const{
        return localStripDir(m_idHelper.gasGap(id), m_idHelper.channel(id));
    }
    inline Amg::Vector3D TgcReadoutElement::stripDir(int gasGap, int strip) const {
        return transform(surfaceHash(gasGap, true)).linear() * localStripDir(gasGap, strip);
    }
    inline Amg::Vector3D TgcReadoutElement::stripDir(const Identifier& id) const {
        return stripDir(m_idHelper.gasGap(id), m_idHelper.channel(id));
    }
 
 
    inline Amg::Vector3D TgcReadoutElement::channelPos(const Identifier& id) const {
        return channelPos(m_idHelper.gasGap(id), 
                          m_idHelper.isStrip(id),
                          m_idHelper.channel(id));
    }
    inline Amg::Vector3D TgcReadoutElement::channelPos(int gasGap, bool isStrip, int channel) const {
        return transform(surfaceHash(gasGap, isStrip)) * localChannelPos(gasGap, isStrip, channel);
    }
    inline Amg::Vector3D TgcReadoutElement::localChannelPos(const Identifier& id) const {
        return localChannelPos(m_idHelper.gasGap(id), 
                               m_idHelper.isStrip(id),
                               m_idHelper.channel(id));
    }
    inline Amg::Vector3D TgcReadoutElement::localChannelPos(int gasGap, bool isStrip, int channel) const {
        return  isStrip ? localStripPos(gasGap, channel) : localWireGangPos(gasGap, channel);
    }
 
 
 
 
}  // namespace MuonGM
 
#endif