ICombinedMuonTrackBuilder.h

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/*
  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
*/

// ICombinedMuonTrackBuilder
//  interface to build and fit a combined muon from input track(s)
//  and/or MeasurementSet, gathering material effects along the
//  track (in particular for the calorimeter).
//
 
#ifndef MUIDINTERFACES_ICOMBINEDMUONTRACKBUILDER_H
#define MUIDINTERFACES_ICOMBINEDMUONTRACKBUILDER_H
 
#include "GaudiKernel/IAlgTool.h"
#include "TrkEventPrimitives/ParticleHypothesis.h"
#include "TrkFitterUtils/FitterTypes.h"
#include "TrkParameters/TrackParameters.h"
 
namespace Trk {
    class Track;
    class Vertex;
}  // namespace Trk
 
namespace Rec {


    class ICombinedMuonTrackBuilder : virtual public IAlgTool {
    public:
        virtual ~ICombinedMuonTrackBuilder() = default;

        static const InterfaceID& interfaceID() {
            static const InterfaceID IID_ICombinedMuonTrackBuilder("ICombinedMuonTrackBuilder", 1, 0);
            return IID_ICombinedMuonTrackBuilder;
        }

        virtual std::unique_ptr<Trk::Track> combinedFit(const EventContext& ctx,
                                                        const Trk::Track& indetTrack, const Trk::Track& extrapolatedTrack,
                                                        const Trk::Track& spectrometerTrack) const = 0;

        virtual std::unique_ptr<Trk::Track> indetExtension(const EventContext& ctx,
                                                           const Trk::Track& indetTrack,
                                                           const Trk::MeasurementSet& spectrometerMeasurements, 
                                                           std::unique_ptr<Trk::TrackParameters> innerParameters = nullptr,
                                                           std::unique_ptr<Trk::TrackParameters> middleParameters = nullptr,
                                                           std::unique_ptr<Trk::TrackParameters> outerParameters = nullptr) const = 0;

        virtual std::unique_ptr<Trk::Track> standaloneFit(const EventContext& ctx, const Trk::Track& spectrometerTrack,
                                                          const Amg::Vector3D& bs, const Trk::Vertex* vertex = nullptr) const = 0;

        virtual std::unique_ptr<Trk::Track> standaloneRefit(const EventContext& ctx, const Trk::Track& combinedTrack,  const Amg::Vector3D& bs) const = 0;
 
    };
 
}  // namespace Rec
 
#endif  // MUIDINTERFACES_ICOMBINEDMUONTRACKBUILDER_H