MuonStripDesign.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
/***************************************************************************
 properties of a plane based strip detector with equidistant parallel strips
 -----------------------------------------
***************************************************************************/
 
#ifndef MUONREADOUTGEOMETRY_MUONSTRIPDESIGN_H
#define MUONREADOUTGEOMETRY_MUONSTRIPDESIGN_H
#include "GeoPrimitives/GeoPrimitives.h"
 
#include <algorithm>
#include <cstdint>
namespace MuonGM {
 
    struct MuonStripDesign {
    public:
        int nstrips{0};
        double stripPitch{0.};
        double invStripPitch{0.};
        double stripLength{0.};
        double stripWidth;
        double readoutLocY{0.};
        double signY{0.};
        Amg::Vector2D firstStripPos{Amg::Vector2D::Zero()};

        double distanceToReadout(const Amg::Vector2D& pos) const;
        double distanceToReadout(double locY) const;

        int stripNumber(const Amg::Vector2D& pos) const;
        int stripNumber(double locX) const;

        bool stripPosition(int strip, Amg::Vector2D& pos) const;
    };
 
    inline double MuonStripDesign::distanceToReadout(const Amg::Vector2D& pos) const { return distanceToReadout(pos.y()); }
 
    inline double MuonStripDesign::distanceToReadout(double locY) const {
        return std::clamp(locY - readoutLocY, 0., stripLength);
    }
 
    inline int MuonStripDesign::stripNumber(const Amg::Vector2D& pos) const { return stripNumber(pos.x()); }
 
    inline int MuonStripDesign::stripNumber(double locX) const {
        int st = (locX - firstStripPos.x()) * invStripPitch + 1.5;
        if (st < 1) return -1;
        if (st > nstrips) return -1;
        return st;
    }
 
    inline bool MuonStripDesign::stripPosition(int st, Amg::Vector2D& pos) const {
        if (st < 1 || st > nstrips) return false;
        pos[0] = firstStripPos.x() + stripPitch * (st - 1);
        pos[1] = firstStripPos.y();
        return true;
    }
 
}  // namespace MuonGM
#endif  // MUONREADOUTGEOMETRY_MUONSTRIPDESIGN_H