MuonTriggerPrimitive.h

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#ifndef __L1TMUON_TRIGGERPRIMITIVE_H__
#define __L1TMUON_TRIGGERPRIMITIVE_H__
//
// Class: L1TMuon::TriggerPrimitive
//
// Info: This class implements a unifying layer between DT, CSC and RPC
//       trigger primitives (TPs) such that TPs from different subsystems
//       can be queried for their position and orientation information
//       in a consistent way amongst all subsystems.
//
// Note: Not all input data types are persistable, so we make local
//       copies of all data from various digi types.
//
//       At the end of the day this should represent the output of some
//       common sector receiver module.
//
// Author: L. Gray (FNAL)
//

#include <cstdint>
#include <vector>
#include <iostream>

//DetId
#include "DataFormats/DetId/interface/DetId.h"
//Global point (created on the fly)
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"

// Forward declaration
#include "L1Trigger/L1TMuon/interface/MuonTriggerPrimitiveFwd.h"

// DT digi types
class DTChamberId;
class L1MuDTChambPhDigi;
class L1MuDTChambThDigi;

// CSC digi types
class CSCCorrelatedLCTDigi;
class CSCDetId;

// RPC digi types
class RPCDigiL1Link;
class RPCDetId;

// GEM digi types
class GEMPadDigi;
class GEMDetId;


namespace L1TMuon {

  class TriggerPrimitive {
  public:
    // define the subsystems that we have available
    enum subsystem_type{kDT,kCSC,kRPC,kGEM,kNSubsystems};

    // define the data we save locally from each subsystem type
    // variables in these structs keep their colloquial meaning
    // within a subsystem
    // for RPCs you have to unroll the digi-link and raw det-id
    struct RPCData {
    RPCData() : strip(0), strip_low(0), strip_hi(0), layer(0), bx(0), valid(0) {}
      uint16_t strip;
      uint16_t strip_low; // for use in clustering
      uint16_t strip_hi;  // for use in clustering
      uint16_t layer;
      int16_t bx;
      uint16_t valid;
    };

    struct CSCData {
      CSCData() : trknmb(0), valid(0), quality(0), keywire(0), strip(0),
          pattern(0), bend(0), bx(0), mpclink(0), bx0(0), syncErr(0),
          cscID(0) {}
      uint16_t trknmb;
      uint16_t valid;
      uint16_t quality;
      uint16_t keywire;
      uint16_t strip;
      uint16_t pattern;
      uint16_t bend;
      uint16_t bx;
      uint16_t mpclink;
      uint16_t bx0;
      uint16_t syncErr;
      uint16_t cscID;
    };

    struct DTData {
      DTData() : bx(0), wheel(0), sector(0), station(0), radialAngle(0),
         bendingAngle(0), qualityCode(0), Ts2TagCode(0), BxCntCode(0),
         theta_bti_group(0), segment_number(0), theta_code(0),
         theta_quality(0) {}
      // from ChambPhDigi (corresponds to a TRACO)
      // this gives us directly the phi
      int bx; // relative? bx number
      int wheel; // wheel number -3,-2,-1,1,2,3
      int sector; // 1-12 in DT speak (these correspond to CSC sub-sectors)
      int station; // 1-4 radially outwards
      int radialAngle; // packed phi in a sector
      int bendingAngle; // angle of segment relative to chamber
      int qualityCode; // need to decode
      int Ts2TagCode; // ??
      int BxCntCode; // ????
      // from ChambThDigi (corresponds to a BTI)
      // we have to root out the eta manually
      // theta super layer == SL 1
      // station four has no theta super-layer
      // bti_idx == -1 means there was no theta trigger for this segment
      int theta_bti_group;
      int segment_number; // position(i)
      int theta_code;
      int theta_quality;
    };

    struct GEMData {
      GEMData() : pad(0), pad_low(0), pad_hi(0), bx(0) {}
      uint16_t pad;
      uint16_t pad_low; // for use in clustering
      uint16_t pad_hi;  // for use in clustering
      int16_t bx;
    };

    //Persistency
    TriggerPrimitive(): _subsystem(kNSubsystems) {}

    //DT
    TriggerPrimitive(const DTChamberId&,
             const L1MuDTChambPhDigi&,
             const int segment_number);
    TriggerPrimitive(const DTChamberId&,
             const L1MuDTChambThDigi&,
             const int segment_number);
    TriggerPrimitive(const DTChamberId&,
             const L1MuDTChambPhDigi&,
             const L1MuDTChambThDigi&,
             const int theta_bti_group);
    //CSC
    TriggerPrimitive(const CSCDetId&,
             const CSCCorrelatedLCTDigi&);
    //RPC
    TriggerPrimitive(const RPCDetId& detid,
                     const unsigned strip,
                     const unsigned layer,
                     const int bx);

    // GEM
    TriggerPrimitive(const GEMDetId& detid,
                     const GEMPadDigi& digi);

    //copy
    TriggerPrimitive(const TriggerPrimitive&);

    TriggerPrimitive& operator=(const TriggerPrimitive& tp);
    bool operator==(const TriggerPrimitive& tp) const;

    // return the subsystem we belong to
    const subsystem_type subsystem() const { return _subsystem; }

    const double getCMSGlobalEta() const { return _eta; }
    void   setCMSGlobalEta(const double eta) { _eta = eta; }
    const double getCMSGlobalPhi() const { return _phi; }
    void   setCMSGlobalPhi(const double phi) { _phi = phi; }
    const double getCMSGlobalRho() const { return _rho; }
    void   setCMSGlobalRho(const double rho) { _rho = rho; }

    const GlobalPoint getCMSGlobalPoint() const { double theta = 2. * atan( exp(-_eta) );
      return GlobalPoint( GlobalPoint::Cylindrical( _rho, _phi, _rho/tan(theta)) ); };


    // this is the relative bending angle with respect to the
    // current phi position.
    // The total angle of the track is phi + bendAngle
    void setThetaBend(const double theta) { _theta = theta; }
    double getThetaBend() const { return _theta; }

    template<typename IDType>
      IDType detId() const { return IDType(_id); }

    // accessors to raw subsystem data
    void setDTData(const DTData& dt) { _dt = dt; }
    void setCSCData(const CSCData& csc) { _csc = csc; }
    void setRPCData(const RPCData& rpc) { _rpc = rpc; }
    void setGEMData(const GEMData& gem) { _gem = gem; }

    const DTData  getDTData()  const { return _dt;  }
    const CSCData getCSCData() const { return _csc; }
    const RPCData getRPCData() const { return _rpc; }
    const GEMData getGEMData() const { return _gem; }

    DTData&  accessDTData()  { return _dt; }
    CSCData& accessCSCData() { return _csc; }
    RPCData& accessRPCData() { return _rpc; }
    GEMData& accessGEMData() { return _gem; }

    // consistent accessors to common information
    const int getBX() const;
    const int getStrip() const;
    const int getWire() const;
    const int getPattern() const;
    const DetId rawId() const {return _id;};

    const unsigned getGlobalSector() const { return _globalsector; }
    const unsigned getSubSector() const { return _subsector; }

    void print(std::ostream&) const;

  private:
    // Translate to 'global' position information at the level of 60
    // degree sectors. Use CSC sectors as a template
    void calculateDTGlobalSector(const DTChamberId& chid,
                 unsigned& global_sector,
                 unsigned& subsector );
    void calculateCSCGlobalSector(const CSCDetId& chid,
                  unsigned& global_sector,
                  unsigned& subsector );
    void calculateRPCGlobalSector(const RPCDetId& chid,
                                  unsigned& global_sector,
                                  unsigned& subsector );
    void calculateGEMGlobalSector(const GEMDetId& chid,
                                  unsigned& global_sector,
                                  unsigned& subsector );

    DTData  _dt;
    CSCData _csc;
    RPCData _rpc;
    GEMData _gem;

    DetId _id;

    subsystem_type _subsystem;

    unsigned _globalsector; // [1,6] in 60 degree sectors
    unsigned _subsector; // [1,2] in 30 degree partitions of a sector
    double _eta,_phi,_rho; // global pseudorapidity, phi, rho
    double _theta; // bend angle with respect to ray from (0,0,0)
  };

}

#endif