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0001 // This file is part of the ACTS project. 0002 // 0003 // Copyright (C) 2016 CERN for the benefit of the ACTS project 0004 // 0005 // This Source Code Form is subject to the terms of the Mozilla Public 0006 // License, v. 2.0. If a copy of the MPL was not distributed with this 0007 // file, You can obtain one at https://mozilla.org/MPL/2.0/. 0008 0009 #pragma once 0010 0011 #include "Acts/Surfaces/RegularSurface.hpp" 0012 #include "Acts/Surfaces/SurfacePlacementBase.hpp" 0013 0014 namespace Acts { 0015 class VolumePlacementBase; 0016 0017 namespace detail { 0018 /// Implementation of the `SurfacePlacementBase` to synchronize the alignment 0019 /// of an alignable volume with the alignment of the boundary surfaces 0020 /// associated with the Volume. 0021 class PortalPlacement final : public SurfacePlacementBase { 0022 public: 0023 /// Allow the VolumePlacementBase as only class to construct the portal 0024 /// placement 0025 friend class Acts::VolumePlacementBase; 0026 0027 /// Returns the transform to switch from the portal reference 0028 /// frame into the experiment's global frame taking the alignment 0029 /// correction into account 0030 /// @param gctx The current geometry context object, e.g. alignment 0031 const Transform3& localToGlobalTransform( 0032 const GeometryContext& gctx) const override; 0033 0034 /// Returns the const reference to portal surface connected with this 0035 /// placement instance 0036 const RegularSurface& surface() const override; 0037 0038 /// Returns the mutable reference to portal surface connected with this 0039 /// placement instance 0040 RegularSurface& surface() override; 0041 0042 /// Returns the pointer to the hold surface 0043 const std::shared_ptr<RegularSurface>& surfacePtr(); 0044 0045 /// Returns the pointer to the hold surface 0046 std::shared_ptr<const RegularSurface> surfacePtr() const; 0047 0048 /// Declares the surface object to be non-sensitive 0049 bool isSensitive() const override; 0050 0051 /// Returns the face index of the associated portal surface 0052 std::size_t index() const; 0053 0054 /// Returns the transform from the portal to the associated volume reference 0055 /// frame 0056 const Transform3& portalToVolumeCenter() const; 0057 0058 /// Delete the copy constructor 0059 PortalPlacement(const PortalPlacement& other) = delete; 0060 0061 /// Delete the copy assignment operator 0062 PortalPlacement& operator=(const PortalPlacement& other) = delete; 0063 0064 /// Constructor to instantiate a PortalPlacement 0065 /// @param portalIdx: Internal index to associated the portal with the 0066 /// i-th boundary surface of the volume 0067 /// @param portalTrf: Transform from the portal's frame into the 0068 /// volume (I.e. the orientation of the portal w.r.t. 0069 /// volume) 0070 /// @param parent: Pointer to the parent which is hosting the placement and also 0071 /// providing the override transforms from the portal -> 0072 /// experiment's frame 0073 /// @param surface: Pointer to the portal surface itself which is becoming alignable 0074 /// with the construction of this PortalPlacement 0075 PortalPlacement(const std::size_t portalIdx, const Transform3& portalTrf, 0076 const VolumePlacementBase* parent, 0077 std::shared_ptr<RegularSurface> surface); 0078 0079 private: 0080 /// Assembles the transform to switch from the portal's frame 0081 /// to the experiment's global frame which is essentially the 0082 /// same as a call of `localToGlobalTransform` but this method 0083 /// is solely intended to be used during the population stage 0084 /// of the geometry context 0085 /// @param gctx The current geometry context object, e.g. alignment 0086 Transform3 assembleFullTransform(const GeometryContext& gctx) const; 0087 0088 /// Orientation of the portal surface w.r.t the volume 0089 Transform3 m_portalToVolumeCenter{Transform3::Identity()}; 0090 /// Pointer to the surface held by the placement 0091 std::shared_ptr<RegularSurface> m_surface{}; 0092 /// Pointer to the parent managing this instance 0093 const VolumePlacementBase* m_parent{nullptr}; 0094 /// Internal index of the portal 0095 std::size_t m_portalIdx{0ul}; 0096 }; 0097 } // namespace detail 0098 } // namespace Acts
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