AlphaBetaEstimate.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef  TRIGL2MUONSA_ALPHABETAESTIMATE_H
#define  TRIGL2MUONSA_ALPHABETAESTIMATE_H
 
#include "AthenaBaseComps/AthAlgTool.h"
 
#include "GaudiKernel/ServiceHandle.h"
 
#include "TrigSteeringEvent/TrigRoiDescriptor.h"
 
#include "TgcFitResult.h"
#include "MuonRoad.h"
#include "TrackData.h"
 
#include "PtEndcapLUTSvc.h"
 
namespace TrigL2MuonSA {
  
class AlphaBetaEstimate: public AthAlgTool
{
 public:
 
  AlphaBetaEstimate(const std::string& type, 
            const std::string& name,
            const IInterface*  parent);
    
  void setMCFlag(bool use_mcLUT,
         const TrigL2MuonSA::PtEndcapLUTSvc* ptEndcapLUTSvc);
    
 public:
    
  StatusCode setAlphaBeta(const TrigRoiDescriptor*      p_roids,
              TrigL2MuonSA::TgcFitResult&   tgcFitResult,
              TrigL2MuonSA::TrackPattern&   trackPattern,
              const TrigL2MuonSA::MuonRoad& muonRoad) const;
 
 private:
 
  double computeRadius(double InnerSlope, double InnerR, double InnerZ,
               double MiddleSlope, double MiddleR, double MiddleZ,
               double sign) const;
 
  double computeRadius3Points(double InnerZ, double InnerR, double EEZ, double EER,double MiddleZ, double MiddleR ) const ;
  double calcDistance(double x1,double y1,double x2,double y2,double x3,double y3) const;
 
  inline bool isZero( float value, float tolerance = 1e-5 ) const {
    return std::abs( value ) < tolerance;
  }
 
  bool m_use_mcLUT{false};
 
  const ToolHandle<PtEndcapLUT>* m_ptEndcapLUT {nullptr}; // point to LUT when calling setMCFlag()
 
};
 
} // namespace TrigL2MuonSA
 
#endif  // ALPHABETAESTIMATE_H