IActsExtrapolationTool.h

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/*
  Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef ACTSGEOMETRYINTERFACES_IACTSEXTRAPOLATIONTOOL_H
#define ACTSGEOMETRYINTERFACES_IACTSEXTRAPOLATIONTOOL_H
 
#include "AthenaBaseComps/AthAlgTool.h"
#include "GaudiKernel/IInterface.h"
#include "GaudiKernel/IAlgTool.h"
#include "GaudiKernel/EventContext.h"
#include "TrkEventPrimitives/ParticleHypothesis.h"
 
#include "ActsGeometryInterfaces/ActsGeometryContext.h"
#include "Acts/MagneticField/MagneticFieldContext.hpp"
 
#include "Acts/Propagator/MaterialInteractor.hpp"
#include "Acts/Propagator/detail/SteppingLogger.hpp"
#include "Acts/EventData/TrackParameters.hpp"
 
using ActsRecordedMaterial = Acts::MaterialInteractor::result_type;
using ActsPropagationOutput =
        std::pair<std::vector<Acts::detail::Step>, ActsRecordedMaterial>;
 
 
class IActsTrackingGeometryTool;
 
 
class IActsExtrapolationTool : virtual public IAlgTool {
  public:
 
  DeclareInterfaceID(IActsExtrapolationTool, 1, 0);
 
  virtual
  ActsPropagationOutput
  propagationSteps(const EventContext& ctx,
                   const Acts::BoundTrackParameters& startParameters,
                   Acts::Direction navDir = Acts::Direction::Forward,
                   double pathLimit = std::numeric_limits<double>::max()) const = 0;
 
  virtual
  std::optional<const Acts::CurvilinearTrackParameters>
  propagate(const EventContext& ctx,
            const Acts::BoundTrackParameters& startParameters,
            Acts::Direction navDir = Acts::Direction::Forward,
            double pathLimit = std::numeric_limits<double>::max()) const = 0;
 
  virtual
  ActsPropagationOutput
  propagationSteps(const EventContext& ctx,
                   const Acts::BoundTrackParameters& startParameters,
                   const Acts::Surface& target,
                   Acts::Direction navDir = Acts::Direction::Forward,
                   double pathLimit = std::numeric_limits<double>::max()) const = 0;
 
  virtual
  std::optional<const Acts::BoundTrackParameters>
  propagate(const EventContext& ctx,
            const Acts::BoundTrackParameters& startParameters,
            const Acts::Surface& target,
            Acts::Direction navDir = Acts::Direction::Forward,
            double pathLimit = std::numeric_limits<double>::max()) const = 0;
 
  virtual
  const IActsTrackingGeometryTool*
  trackingGeometryTool() const = 0;
 
  virtual 
  Acts::MagneticFieldContext getMagneticFieldContext(const EventContext& ctx) const = 0;
};
 
#endif