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 // This file is part of the ACTS project.
 //
 // Copyright (C) 2016 CERN for the benefit of the ACTS project
 //
 // This Source Code Form is subject to the terms of the Mozilla Public
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
 #pragma once
 
 #include "Acts/Definitions/Algebra.hpp"
 #include "Acts/Geometry/BoundarySurfaceFace.hpp"
 #include "Acts/Geometry/BoundarySurfaceT.hpp"
 #include "Acts/Geometry/GeometryContext.hpp"
 #include "Acts/Geometry/GeometryIdentifier.hpp"
 #include "Acts/Geometry/Layer.hpp"
 #include "Acts/Geometry/Portal.hpp"
 #include "Acts/Geometry/TrackingGeometryVisitor.hpp"
 #include "Acts/Geometry/TrackingVolumeVisitorConcept.hpp"
 #include "Acts/Geometry/Volume.hpp"
 #include "Acts/Material/IVolumeMaterial.hpp"
 #include "Acts/Navigation/NavigationDelegate.hpp"
 #include "Acts/Navigation/NavigationStream.hpp"
 #include "Acts/Surfaces/Surface.hpp"
 #include "Acts/Surfaces/SurfaceVisitorConcept.hpp"
 #include "Acts/Utilities/BinnedArray.hpp"
 #include "Acts/Utilities/Logger.hpp"
 #include "Acts/Utilities/TransformRange.hpp"
 #include "Acts/Visualization/ViewConfig.hpp"
 
 #include <cstddef>
 #include <memory>
 #include <string>
 #include <unordered_map>
 #include <utility>
 #include <vector>
 
 #include <boost/container/container_fwd.hpp>
 
 namespace Acts {
 
 class GlueVolumesDescriptor;
 class VolumeBounds;
 template <typename object_t>
 struct NavigationOptions;
 class IMaterialDecorator;
 class ISurfaceMaterial;
 class IVolumeMaterial;
 class Surface;
 class TrackingVolume;
 struct GeometryIdentifierHook;
 class Portal;
 class INavigationPolicy;
 
 /// Interface types of the Gen1 geometry model
 /// @note This interface is being replaced, and is subject to removal
 /// @{
 
 // master typedefs
 using TrackingVolumePtr = std::shared_ptr<const TrackingVolume>;
 using MutableTrackingVolumePtr = std::shared_ptr<TrackingVolume>;
 
 using TrackingVolumeBoundaryPtr =
     std::shared_ptr<const BoundarySurfaceT<TrackingVolume>>;
 using TrackingVolumeBoundaries = std::vector<TrackingVolumeBoundaryPtr>;
 
 // possible contained
 using TrackingVolumeArray = BinnedArray<TrackingVolumePtr>;
 using TrackingVolumeVector = std::vector<TrackingVolumePtr>;
 using MutableTrackingVolumeVector = std::vector<MutableTrackingVolumePtr>;
 using LayerArray = BinnedArray<LayerPtr>;
 using LayerVector = std::vector<LayerPtr>;
 
 /// Intersection with @c Layer
 using LayerIntersection = std::pair<SurfaceIntersection, const Layer*>;
 /// Multi-intersection with @c Layer
 using LayerMultiIntersection =
     std::pair<SurfaceMultiIntersection, const Layer*>;
 
 /// BoundarySurface of a volume
 using BoundarySurface = BoundarySurfaceT<TrackingVolume>;
 /// Intersection with a @c BoundarySurface
 using BoundaryIntersection =
     std::pair<SurfaceIntersection, const BoundarySurface*>;
 /// Multi-intersection with a @c BoundarySurface
 using BoundaryMultiIntersection =
     std::pair<SurfaceMultiIntersection, const BoundarySurface*>;
 
 /// @}
 
 /// @class TrackingVolume
 ///
 /// Full Volume description used in Tracking,
 /// it inherits from Volume to get the geometrical structure.
 ///
 ///     A TrackingVolume at navigation level can provide the (layer) material
 /// information / internal navigation with in
 ///     5 different ways:
 ///
 ///         --- a) Static confinement of Layers
 ///         --- b) detached sub volumes
 ///         --- b) unordered (arbitrarily oriented) layers
 ///         --- d) unordered sub volumes
 ///         --- e) unordered layers AND unordered subvolumes
 ///
 ///    The TrackingVolume can also be a simple container of other
 ///    TrackingVolumes
 ///
 /// In addition it is capable of holding a subarray of Layers and
 /// TrackingVolumes.
 ///
 class TrackingVolume : public Volume {
   friend class TrackingGeometry;
 
  public:
   TrackingVolume() = delete;
   ~TrackingVolume() override;
   TrackingVolume(const TrackingVolume&) = delete;
   TrackingVolume& operator=(const TrackingVolume&) = delete;
   TrackingVolume(TrackingVolume&&) noexcept;
   TrackingVolume& operator=(TrackingVolume&&) noexcept;
 
   /// Constructor for a container Volume
   /// - vacuum filled volume either as a for other tracking volumes
   ///
   /// @param transform is the global 3D transform to position the volume in
   /// space
   /// @param volbounds is the description of the volume boundaries
   /// @param volumeName is a string identifier
   TrackingVolume(const Transform3& transform,
                  std::shared_ptr<VolumeBounds> volbounds,
                  const std::string& volumeName = "undefined");
 
   /// Constructor for a full equipped Tracking Volume
   ///
   /// @param transform is the global 3D transform to position the volume in
   /// space
   /// @param volumeBounds is the description of the volume boundaries
   /// @param volumeMaterial is are materials of the tracking volume
   /// @param staticLayerArray is the confined layer array (optional)
   /// @param containedVolumeArray are the sub volumes if the volume is a
   /// container
   /// @param denseVolumeVector  The contained dense volumes
   /// @param volumeName is a string identifier
   TrackingVolume(
       const Transform3& transform, std::shared_ptr<VolumeBounds> volumeBounds,
       std::shared_ptr<const IVolumeMaterial> volumeMaterial,
       std::unique_ptr<const LayerArray> staticLayerArray = nullptr,
       std::shared_ptr<const TrackingVolumeArray> containedVolumeArray = nullptr,
       MutableTrackingVolumeVector denseVolumeVector = {},
       const std::string& volumeName = "undefined");
 
   /// Constructor from a regular volume
   /// @param volume is the volume to be converted
   /// @param volumeName is a string identifier
   explicit TrackingVolume(Volume& volume,
                           const std::string& volumeName = "undefined");
 
   /// Return the associated sub Volume, returns THIS if no subVolume exists
   /// @param gctx The current geometry context object, e.g. alignment
   /// @param position is the global position associated with that search
   /// @param tol Search position tolerance for dense volumes
   ///
   /// @return plain pointer to associated with the position
   const TrackingVolume* lowestTrackingVolume(const GeometryContext& gctx,
                                              const Vector3& position,
                                              const double tol = 0.) const;
 
   /// @brief Visit all reachable surfaces
   ///
   /// @tparam visitor_t Type of the callable visitor
   ///
   /// @param visitor The callable. Will be called for each reachable surface
   /// that is found, a selection of the surfaces can be done in the visitor
   /// @param restrictToSensitives If true, only sensitive surfaces are visited
   ///
   /// @note If a context is needed for the visit, the vistitor has to provide
   /// this, e.g. as a private member
   template <SurfaceVisitor visitor_t>
   void visitSurfaces(visitor_t&& visitor, bool restrictToSensitives) const {
     apply([&visitor, restrictToSensitives](const Surface& surface) {
       if (restrictToSensitives && surface.geometryId().sensitive() == 0) {
         return;
       }
       visitor(&surface);
     });
   }
 
   /// @brief Visit all sensitive surfaces
   ///
   /// @tparam visitor_t Type of the callable visitor
   ///
   /// @param visitor The callable. Will be called for each sensitive surface
   /// that is found, a selection of the surfaces can be done in the visitor
   ///
   /// @note If a context is needed for the visit, the vistitor has to provide
   /// this, e.g. as a private member
   template <SurfaceVisitor visitor_t>
   void visitSurfaces(visitor_t&& visitor) const {
     visitSurfaces(std::forward<visitor_t>(visitor), true);
   }
 
   /// @brief Visit all reachable tracking volumes
   ///
   /// @tparam visitor_t Type of the callable visitor
   ///
   /// @param visitor The callable. Will be called for each reachable volume
   /// that is found, a selection of the volumes can be done in the visitor
   ///
   /// @note If a context is needed for the visit, the vistitor has to provide
   /// this, e.g. as a private member
   template <TrackingVolumeVisitor visitor_t>
   void visitVolumes(visitor_t&& visitor) const {
     apply([&visitor](const TrackingVolume& volume) { visitor(&volume); });
   }
 
   /// @brief Apply a visitor to the tracking volume
   ///
   /// @param visitor The visitor to apply
   ///
   void apply(TrackingGeometryVisitor& visitor) const;
 
   /// @brief Apply a mutable visitor to the tracking volume
   ///
   /// @param visitor The visitor to apply
   ///
   void apply(TrackingGeometryMutableVisitor& visitor);
 
   /// @brief Apply an arbitrary callable as a visitor to the tracking volume
   ///
   /// @param callable The callable to apply
   ///
   /// @note The visitor can be overloaded on any of the arguments that
   ///       the methods in @c TrackingGeometryVisitor receive.
   template <typename Callable>
   void apply(Callable&& callable)
     requires(detail::callableWithAnyMutable<Callable>() &&
              !detail::callableWithAnyConst<Callable>())
   {
     detail::TrackingGeometryLambdaMutableVisitor visitor{
         std::forward<Callable>(callable)};
     apply(visitor);
   }
 
   /// @brief Apply an arbitrary callable as a visitor to the tracking volume
   ///
   /// @param callable The callable to apply
   ///
   /// @note The visitor can be overloaded on any of the arguments that
   ///       the methods in @c TrackingGeometryMutableVisitor receive.
   template <typename Callable>
   void apply(Callable&& callable) const
     requires(detail::callableWithAnyConst<Callable>())
   {
     detail::TrackingGeometryLambdaVisitor visitor{
         std::forward<Callable>(callable)};
     apply(visitor);
   }
 
   /// Returns the VolumeName - for debug reason, might be depreciated later
   const std::string& volumeName() const;
 
   /// Set the volume name to @p volumeName
   /// @param volumeName is the new name of
   void setVolumeName(const std::string& volumeName);
 
   /// Return the material of the volume
   const IVolumeMaterial* volumeMaterial() const;
 
   /// Return the material of the volume as shared pointer
   const std::shared_ptr<const IVolumeMaterial>& volumeMaterialPtr() const;
 
   /// Set the volume material description
   ///
   /// The material is usually derived in a complicated way and loaded from
   /// a framework given source. As various volumes could potentially share the
   /// the same material description, it is provided as a shared object
   ///
   /// @param material Material description of this volume
   void assignVolumeMaterial(std::shared_ptr<const IVolumeMaterial> material);
 
   /// Return the MotherVolume - if it exists
   const TrackingVolume* motherVolume() const;
 
   /// Return the MotherVolume - if it exists
   TrackingVolume* motherVolume();
 
   /// Set the MotherVolume
   ///
   /// @param mvol is the mother volume
   void setMotherVolume(TrackingVolume* mvol);
 
   using MutableVolumeRange =
       detail::TransformRange<detail::Dereference,
                              std::vector<std::unique_ptr<TrackingVolume>>>;
   using VolumeRange = detail::TransformRange<
       detail::ConstDereference,
       const std::vector<std::unique_ptr<TrackingVolume>>>;
 
   /// Return all volumes registered under this tracking volume
   /// @return the range of volumes
   VolumeRange volumes() const;
 
   /// Return mutable view of the registered volumes under this tracking volume
   /// @return the range of volumes
   MutableVolumeRange volumes();
 
   using MutablePortalRange =
       detail::TransformRange<detail::Dereference,
                              std::vector<std::shared_ptr<Portal>>>;
 
   using PortalRange =
       detail::TransformRange<detail::ConstDereference,
                              const std::vector<std::shared_ptr<Portal>>>;
 
   /// Return all portals registered under this tracking volume
   /// @return the range of portals
   PortalRange portals() const;
 
   /// Return mutable view of the registered portals under this tracking volume
   /// @return the range of portals
   MutablePortalRange portals();
 
   /// Add a portal to this tracking volume
   /// @param portal The portal to add
   void addPortal(std::shared_ptr<Portal> portal);
 
   using MutableSurfaceRange =
       detail::TransformRange<detail::Dereference,
                              std::vector<std::shared_ptr<Surface>>>;
   using SurfaceRange =
       detail::TransformRange<detail::ConstDereference,
                              const std::vector<std::shared_ptr<Surface>>>;
 
   /// Return all surfaces registered under this tracking volume
   /// @return the range of surfaces
   SurfaceRange surfaces() const;
 
   /// Return mutable view of the registered surfaces under this tracking volume
   /// @return the range of surfaces
   MutableSurfaceRange surfaces();
 
   /// Add a surface to this tracking volume
   /// @param surface The surface to add
   void addSurface(std::shared_ptr<Surface> surface);
 
   /// Add a child volume to this tracking volume
   /// @param volume The volume to add
   /// @note The @p volume will have its mother volume assigned to @p this.
   ///       It will throw if @p volume already has a mother volume set
   /// @return Reference to the added volume
   TrackingVolume& addVolume(std::unique_ptr<TrackingVolume> volume);
 
   /// Interface of @c TrackingVolume in the Gen1 geometry model
   /// @note This interface is being replaced, and is subject to removal
   ///
   /// @{
 
   /// Return the associated Layer to the global position
   ///
   /// @param gctx The current geometry context object, e.g. alignment
   /// @param position is the associated global position
   ///
   /// @return plain pointer to layer object
   const Layer* associatedLayer(const GeometryContext& gctx,
                                const Vector3& position) const;
 
   /// @brief Resolves the volume into (compatible) Layers
   ///
   /// This is the method for the propagator/extrapolator
   /// @tparam options_t Type of navigation options object for decomposition
   ///
   /// @param gctx The current geometry context object, e.g. alignment
   /// @param position Position for the search
   /// @param direction Direction for the search
   /// @param options The templated navigation options
   ///
   /// @return vector of compatible intersections with layers
   boost::container::small_vector<LayerIntersection, 10> compatibleLayers(
       const GeometryContext& gctx, const Vector3& position,
       const Vector3& direction, const NavigationOptions<Layer>& options) const;
 
   /// @brief Returns all boundary surfaces sorted by the user.
   ///
   /// @tparam options_t Type of navigation options object for decomposition
   /// @tparam sorter_t Type of the boundary surface sorter
   ///
   /// @param gctx The current geometry context object, e.g. alignment
   /// @param position The position for searching
   /// @param direction The direction for searching
   /// @param options The templated navigation options
   /// @param logger A @c Logger instance
   ///
   /// @return is the templated boundary intersection
   boost::container::small_vector<BoundaryIntersection, 4> compatibleBoundaries(
       const GeometryContext& gctx, const Vector3& position,
       const Vector3& direction, const NavigationOptions<Surface>& options,
       const Logger& logger = getDummyLogger()) const;
 
   /// Return the confined static layer array - if it exists
   /// @return the BinnedArray of static layers if exists
   const LayerArray* confinedLayers() const;
 
   /// Return the confined volumes of this container array - if it exists
   std::shared_ptr<const TrackingVolumeArray> confinedVolumes() const;
 
   /// Return the confined dense volumes
   const MutableTrackingVolumeVector denseVolumes() const;
 
   /// Method to return the BoundarySurfaces
   const TrackingVolumeBoundaries& boundarySurfaces() const;
 
   /// Set the boundary surface material description
   ///
   /// The material is usually derived in a complicated way and loaded from
   /// a framework given source. As various volumes could potentially share the
   /// the same material description, it is provided as a shared object
   ///
   /// @param surfaceMaterial Material description of this volume
   /// @param bsFace Specifies which boundary surface to assign the material to
   void assignBoundaryMaterial(
       std::shared_ptr<const ISurfaceMaterial> surfaceMaterial,
       BoundarySurfaceFace bsFace);
 
   /// Glue another tracking volume to this one
   ///  - if common face is set the glued volumes are sharing the boundary, down
   /// to the last navigation volume
   ///
   /// @param gctx The current geometry context object, e.g. alignment
   /// @param bsfMine is the boundary face indicater where to glue
   /// @param neighbor is the TrackingVolume to be glued
   /// @param bsfNeighbor is the boundary surface of the neighbor
   void glueTrackingVolume(const GeometryContext& gctx,
                           BoundarySurfaceFace bsfMine, TrackingVolume* neighbor,
                           BoundarySurfaceFace bsfNeighbor);
 
   /// Glue another tracking volume to this one
   ///  - if common face is set the glued volumes are sharing the boundary, down
   /// to the last navigation volume
   ///
   /// @param gctx The current geometry context object, e.g. alignment
   /// @param bsfMine is the boundary face indicater where to glue
   /// @param neighbors are the TrackingVolumes to be glued
   /// @param bsfNeighbor are the boundary surface of the neighbors
   void glueTrackingVolumes(
       const GeometryContext& gctx, BoundarySurfaceFace bsfMine,
       const std::shared_ptr<TrackingVolumeArray>& neighbors,
       BoundarySurfaceFace bsfNeighbor);
 
   /// Provide a new BoundarySurface from the glueing
   ///
   /// @param bsf is the boundary face indicater where to glue
   /// @param bs is the new boundary surface
   /// @param checkmaterial is a flag how to deal with material, if true:
   /// - if the old boundary surface had a material description
   ///   but the new one has not, keep the current one
   /// - in all other cases just assign the new boundary surface
   void updateBoundarySurface(
       BoundarySurfaceFace bsf,
       std::shared_ptr<const BoundarySurfaceT<TrackingVolume>> bs,
       bool checkmaterial = true);
 
   /// Register the outside glue volumes -
   /// ordering is in the TrackingVolume Frame:
   ///  - negativeFaceXY
   ///  - (faces YZ, ZY, radial faces)
   ///  - positiveFaceXY
   ///
   /// @param gvd register a new GlueVolumeDescriptor
   void registerGlueVolumeDescriptor(std::unique_ptr<GlueVolumesDescriptor> gvd);
 
   /// Clear boundary surfaces for this tracking volume
   void clearBoundarySurfaces();
 
   /// Register the outside glue volumes -
   /// ordering is in the TrackingVolume Frame:
   ///  - negativeFaceXY
   ///  - (faces YZ, ZY, radial faces)
   ///  - positiveFaceXY
   GlueVolumesDescriptor& glueVolumesDescriptor();
 
   /// Produces a 3D visualization of this tracking volume
   /// @param helper The visualization helper describing the output format
   /// @param gctx The geometry context
   /// @param viewConfig The view configuration
   /// @param portalViewConfig View configuration for portals
   /// @param sensitiveViewConfig View configuration for sensitive surfaces
   void visualize(IVisualization3D& helper, const GeometryContext& gctx,
                  const ViewConfig& viewConfig,
                  const ViewConfig& portalViewConfig,
                  const ViewConfig& sensitiveViewConfig) const;
 
   /// Register a navigation policy with this volume. The argument can not be
   /// nullptr.
   /// @param policy is the navigation policy to be registered
   void setNavigationPolicy(std::unique_ptr<INavigationPolicy> policy);
 
   /// Populate the navigation stream with navigation candidates from this
   /// volume. Internally, this consults the registered navigation policy, where
   /// the default is a noop.
   /// @param args are the navigation arguments
   /// @param stream is the navigation stream to be updated
   /// @param logger is the logger
   void initializeNavigationCandidates(const NavigationArguments& args,
                                       AppendOnlyNavigationStream& stream,
                                       const Logger& logger) const;
 
  private:
   void connectDenseBoundarySurfaces(
       MutableTrackingVolumeVector& confinedDenseVolumes);
 
   /// interlink the layers in this TrackingVolume
   void interlinkLayers();
 
   /// Create Boundary Surface
   void createBoundarySurfaces();
 
   /// method to synchronize the layers with potentially updated volume bounds:
   /// - adapts the layer dimensions to the new volumebounds + envelope
   ///
   /// @param envelope is the clearance between volume boundary and layer
   void synchronizeLayers(double envelope = 1.) const;
 
   // the boundary surfaces
   std::vector<TrackingVolumeBoundaryPtr> m_boundarySurfaces;
 
   ///(a) static configuration ordered by Binned arrays
   /// static layers
   std::unique_ptr<const LayerArray> m_confinedLayers = nullptr;
 
   /// Array of Volumes inside the Volume when acting as container
   std::shared_ptr<const TrackingVolumeArray> m_confinedVolumes = nullptr;
 
   /// confined dense
   MutableTrackingVolumeVector m_confinedDenseVolumes;
 
   /// Volumes to glue Volumes from the outside
   std::unique_ptr<GlueVolumesDescriptor> m_glueVolumeDescriptor{nullptr};
 
   /// @}
 
  private:
   /// The volume based material the TrackingVolume consists of
   std::shared_ptr<const IVolumeMaterial> m_volumeMaterial{nullptr};
 
   /// Remember the mother volume
   TrackingVolume* m_motherVolume{nullptr};
 
   /// Volume name for debug reasons & screen output
   std::string m_name;
 
   std::vector<std::unique_ptr<TrackingVolume>> m_volumes;
   std::vector<std::shared_ptr<Portal>> m_portals;
   std::vector<std::shared_ptr<Surface>> m_surfaces;
 
   std::unique_ptr<INavigationPolicy> m_navigationPolicy;
 
   NavigationDelegate m_navigationDelegate{};
 };
 
 }  // namespace Acts

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