CbmKfTarget.h

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/* Copyright (C) 2024 GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
   SPDX-License-Identifier: GPL-3.0-only
   Authors: Sergei Zharko [committer] */
 
 
// TODO: Move this class somewhere in the cbmroot/core
 
#pragma once
 
#include "KfDefs.h"
 
#include <mutex>
 
class TString;
class TGeoNode;
 
namespace cbm::kf
{
  class Target {
   public:
    double GetX() const { return fX; }
 
    double GetY() const { return fY; }
 
    double GetZ() const { return fZ; }
 
    double GetDz() const { return fDz; }
 
    double GetRmax() const { return fRmax; }
 
    static Target* Instance();
 
    // Copy and move elimination
    Target(const Target&) = delete;
    Target(Target&&)      = delete;
    Target& operator=(const Target&) = delete;
    Target& operator=(Target&&) = delete;
 
   protected:
    Target() = default;
 
 
    ~Target() = default;
 
    void Init();
 
    static void FindTargetNode(TString& targetPath, TGeoNode*& targetNode);
 
    double fX{cbm::algo::kf::defs::Undef<double>};     
    double fY{cbm::algo::kf::defs::Undef<double>};     
    double fZ{cbm::algo::kf::defs::Undef<double>};     
    double fDz{cbm::algo::kf::defs::Undef<double>};    
    double fRmax{cbm::algo::kf::defs::Undef<double>};  
 
   private:
    static Target* fpInstance;
    static std::mutex fMutex;
  };
}  // namespace cbm::kf