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File indexing completed on 2025-12-14 09:20:37
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/Definitions/Algebra.hpp" 0012 #include "Acts/Geometry/GeometryContext.hpp" 0013 #include "Acts/Geometry/IReferenceGenerator.hpp" 0014 #include "Acts/Geometry/Polyhedron.hpp" 0015 #include "Acts/Surfaces/Surface.hpp" 0016 #include "Acts/Utilities/AxisDefinitions.hpp" 0017 0018 #include <ranges> 0019 #include <vector> 0020 0021 namespace Acts { 0022 0023 /// A struct to access the center position as a sole reference 0024 /// 0025 /// This generator will provide only one filling point and hence 0026 /// only a single bin in the indexed grid. 0027 struct CenterReferenceGenerator : public IReferenceGenerator { 0028 /// Helper to access the Center point of for filling the grid 0029 /// 0030 /// @param gctx the geometry context of this operation 0031 /// @param surface the surface for which the reference point is to be accessed 0032 /// 0033 /// @return a vector of reference points for filling 0034 const std::vector<Vector3> references(const GeometryContext& gctx, 0035 const Surface& surface) const override { 0036 return {surface.center(gctx)}; 0037 } 0038 }; 0039 0040 /// A struct to access reference positions based on bin values 0041 /// 0042 /// @tparam bVAL the binning value to be used for the binning position call 0043 /// 0044 /// This generator will provide only one filling point and hence 0045 /// only a single bin in the indexed grid. 0046 template <AxisDirection bVAL> 0047 struct AxisDirectionReferenceGenerator : public IReferenceGenerator { 0048 /// Helper to access a reference position based on binning value 0049 /// 0050 /// @param gctx the geometry context of this operation 0051 /// @param surface the surface for which the reference point is to be accessed 0052 /// 0053 /// @return a vector of reference points for filling 0054 const std::vector<Vector3> references(const GeometryContext& gctx, 0055 const Surface& surface) const override { 0056 return {surface.referencePosition(gctx, bVAL)}; 0057 } 0058 }; 0059 0060 /// A struct to access generated vertices from surface polyhedrons 0061 /// These vertices are then used to find the bin boundary box for the 0062 /// indexed grid. 0063 /// 0064 /// 0065 /// The grid filling then completes the empty bins in between and 0066 /// expands if necessary. 0067 struct PolyhedronReferenceGenerator : public IReferenceGenerator { 0068 /// This is for the barycenter addition 0069 bool addBarycenter = false; 0070 0071 /// @brief The number of segments for the polyhedron approximation 0072 int nSegements = 1; 0073 0074 /// Absolute expansion value for the reference points 0075 double expansionValue = 0.0; 0076 0077 /// Helper to access the Center point of for filling the grid 0078 /// 0079 /// @param gctx the geometry context of this operation 0080 /// @param surface the surface for which the reference point is to be accessed 0081 /// 0082 /// @return a vector of reference points for filling 0083 const std::vector<Vector3> references(const GeometryContext& gctx, 0084 const Surface& surface) const override; 0085 }; 0086 0087 /// A Projected reference generator which projects the polyhedron vertices onto 0088 /// a given reference surface. 0089 /// 0090 struct ProjectedReferenceGenerator : public IReferenceGenerator { 0091 /// The reference surface onto which to project 0092 std::shared_ptr<Surface> referenceSurface = nullptr; 0093 0094 /// @brief The number of segments for the polyhedron approximation 0095 int nSegements = 1; 0096 0097 /// Absolute expansion value for the reference points 0098 double expansionValue = 0.0; 0099 0100 /// Luminous region sampling points for the projection - beam spot 0101 std::vector<Vector3> luminousRegion = {Vector3(0., 0., -200.), 0102 Vector3(0., 0., 200.0)}; 0103 0104 /// Helper to access the Center point of for filling the grid 0105 /// 0106 /// @param gctx the geometry context of this operation 0107 /// @param surface the surface for which the reference point is to be accessed 0108 /// 0109 /// @return a vector of reference points for filling 0110 const std::vector<Vector3> references(const GeometryContext& gctx, 0111 const Surface& surface) const override; 0112 }; 0113 0114 } // namespace Acts
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