MuonHoughDefs.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef MUONR4_MUONPATTERNEVENT_MUONHOUGHDEFS__H 
#define MUONR4_MUONPATTERNEVENT_MUONHOUGHDEFS__H
 
#include "GeoPrimitives/GeoPrimitives.h"
#include "Acts/Seeding/HoughTransformUtils.hpp"
#include "MuonPatternEvent/HoughMaximum.h"
//  to concrete types for representations of the hit, 
 
namespace MuonR4{
  // representation of hits in the hough via space points
  using HoughHitType = HoughMaximum::HitType;
 // ACTS representation of the hough accumulator
  using HoughPlane = Acts::HoughTransformUtils::HoughPlane<HoughHitType> ; 
  // configuration class for the accumulator
  using Acts::HoughTransformUtils::HoughPlaneConfig;
  // peak finder - use an existing ACTS one inspired by Run-2 ATLAS muon 
  using ActsPeakFinderForMuon = Acts::HoughTransformUtils::PeakFinders::IslandsAroundMax<HoughHitType>; 
  // config for the peak finder
  using ActsPeakFinderForMuonCfg = Acts::HoughTransformUtils::PeakFinders::IslandsAroundMaxConfig;
 
  namespace SegmentFit {
        enum class ParamDefs{
            y0 = 0,
            theta = 1,
            x0 = 2,
            phi = 3,
            time = 4,
            nPars
        };
        enum class AxisDefs{
            phi = 0,
            eta = 1,
            t0 = 2,
        };
        constexpr int toInt(const ParamDefs p) {
            return static_cast<int>(p);
        }
        constexpr int toInt(const AxisDefs a) {
          return static_cast<int>(a);
        }
        using Parameters = AmgVector(toInt(ParamDefs::nPars));
        using Covariance = AmgSymMatrix(toInt(ParamDefs::nPars));
  }
 
}
 
 
#endif