StgcStripCalculator.h

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/*
  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef MUONNSWASBUILT_STGCSTRIPCALCULATOR_H
#define MUONNSWASBUILT_STGCSTRIPCALCULATOR_H
 
#include <vector>
#include <unordered_map>
#include <functional>
#include <memory>
 
#include "MuonNSWAsBuilt/Identifier.h"
#include "MuonNSWAsBuilt/Element.h"
#include "MuonNSWAsBuilt/CathodeBoardElement.h"
#include "GeoPrimitives/GeoPrimitives.h"
 
namespace NswAsBuilt {

  class StgcStripCalculator {
    public:
      using ParameterClass = Element::ParameterClass;

      enum class IsValid {
        INVALID=0,
        VALID=1
      };

      struct stgcStrip_t {
        IsValid isvalid{IsValid::INVALID};
        Amg::Vector3D center{Amg::Vector3D::Zero()};
        Amg::Vector3D left{Amg::Vector3D::Zero()};
        Amg::Vector3D right{Amg::Vector3D::Zero()};
      };

      stgcStrip_t getStgcStrip(ParameterClass iclass, stripIdentifier_t strip_id) const;

      struct position_t {
        IsValid isvalid{IsValid::INVALID};
        Amg::Vector3D pos{Amg::Vector3D::Zero()};
      };

      position_t getPositionAlongStgcStrip(ParameterClass iclass, stripIdentifier_t strip_id, double sx, double sy) const;

      void parseJSON(const std::string& in);
 
    private:
      std::vector<std::unique_ptr<Element>> m_rootElements;
      std::unordered_map<pcbIdentifier_t, CathodeBoardElement> m_pcbMap;
    
      // Follow JSON parsing helper methods
      struct json_t; // wraps a nlhohman::json in a pimpl struct to hide dependency
      // Parse the JSON ROOT element
      void parseRootElement(json_t j);
      // Build a NswAsBuilt::Element, following description in JSON
      std::unique_ptr<Element> buildElement(json_t j) const;
      // Parse a quadruplet identifier in JSON
      quadrupletIdentifier_t getQuadrupletIdentifier(json_t j) const;
      // Parse a PCB identidier in JSON
      pcbIdentifier_t getPcbIdentifier(quadrupletIdentifier_t quad_id, json_t j) const;
      // Parse the strip information attached to an element
      void collectStrip(quadrupletIdentifier_t quad_id, Element& element, json_t j);
      // Parse the strip configuration parameters in JSON
      CathodeBoardElement::stgcStripConfiguration_t getStgcStripConfiguration(json_t j) const;
 
  };
}
 
#endif