EIC code displayed by LXR |
|
|
|
|||
File indexing completed on 2025-01-18 09:10:56
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 // Workaround for building on clang+libstdc++ 0012 #include "Acts/Utilities/detail/ReferenceWrapperAnyCompat.hpp" 0013 0014 #include "Acts/EventData/TrackParameters.hpp" 0015 #include "Acts/EventData/detail/CorrectedTransformationFreeToBound.hpp" 0016 0017 #include <tuple> 0018 0019 namespace { 0020 class Surface; 0021 } 0022 0023 namespace Acts::detail::sympy { 0024 0025 /// @brief These functions perform the transport of a covariance matrix using 0026 /// given Jacobians. The required data is provided by the stepper object 0027 /// with some additional data. Since this is a purely algebraic problem the 0028 /// calculations are identical for @c StraightLineStepper and @c EigenStepper. 0029 /// As a consequence the methods can be located in a separate file. 0030 0031 /// Create and return the bound state at the current position 0032 /// 0033 /// @brief It does not check if the transported state is at the surface, this 0034 /// needs to be guaranteed by the propagator 0035 /// 0036 /// @param [in] geoContext The geometry context 0037 /// @param [in, out] boundCovariance The covariance matrix of the state 0038 /// @param [in, out] fullTransportJacobian Full jacobian since the last reset 0039 /// @param [in, out] freeTransportJacobian Global jacobian since the last reset 0040 /// @param [in, out] freeToPathDerivatives Path length derivatives of the free, 0041 /// nominal parameters 0042 /// @param [in, out] boundToFreeJacobian Projection jacobian of the last bound 0043 /// parametrisation to free parameters 0044 /// @param [in, out] freeParameters Free, nominal parametrisation 0045 /// @param [in] particleHypothesis Particle hypothesis 0046 /// @param [in] covTransport Decision whether the covariance transport should be 0047 /// performed 0048 /// @param [in] accumulatedPath Propagated distance 0049 /// @param [in] surface Target surface on which the state is represented 0050 /// @param [in] freeToBoundCorrection Correction for non-linearity effect during 0051 /// transform from free to bound 0052 /// 0053 /// @return A bound state: 0054 /// - the parameters at the surface 0055 /// - the stepwise jacobian towards it (from last bound) 0056 /// - and the path length (from start - for ordering) 0057 Result<std::tuple<BoundTrackParameters, BoundMatrix, double>> boundState( 0058 const GeometryContext& geoContext, const Surface& surface, 0059 BoundSquareMatrix& boundCovariance, BoundMatrix& fullTransportJacobian, 0060 FreeMatrix& freeTransportJacobian, FreeVector& freeToPathDerivatives, 0061 BoundToFreeMatrix& boundToFreeJacobian, FreeVector& freeParameters, 0062 const ParticleHypothesis& particleHypothesis, bool covTransport, 0063 double accumulatedPath, const FreeToBoundCorrection& freeToBoundCorrection); 0064 0065 /// Create and return a curvilinear state at the current position 0066 /// 0067 /// @brief This creates a curvilinear state. 0068 /// 0069 /// @param [in, out] boundCovariance The covariance matrix of the state 0070 /// @param [in, out] fullTransportJacobian Full jacobian since the last reset 0071 /// @param [in, out] freeTransportJacobian Global jacobian since the last reset 0072 /// @param [in, out] freeToPathDerivatives Path length derivatives of the free, 0073 /// nominal parameters 0074 /// @param [in, out] boundToFreeJacobian Projection jacobian of the last bound 0075 /// parametrisation to free parameters 0076 /// @param [in] freeParameters Free, nominal parametrisation 0077 /// @param [in] particleHypothesis Particle hypothesis 0078 /// @param [in] covTransport Decision whether the covariance transport should be 0079 /// performed 0080 /// @param [in] accumulatedPath Propagated distance 0081 /// 0082 /// @return A curvilinear state: 0083 /// - the curvilinear parameters at given position 0084 /// - the stepweise jacobian towards it (from last bound) 0085 /// - and the path length (from start - for ordering) 0086 std::tuple<CurvilinearTrackParameters, BoundMatrix, double> curvilinearState( 0087 BoundSquareMatrix& boundCovariance, BoundMatrix& fullTransportJacobian, 0088 FreeMatrix& transportJacobian, FreeVector& freeToPathDerivatives, 0089 BoundToFreeMatrix& boundToFreeJacobian, const FreeVector& freeParameters, 0090 const ParticleHypothesis& particleHypothesis, bool covTransport, 0091 double accumulatedPath); 0092 0093 /// @brief Method for on-demand covariance transport of a bound/curvilinear to 0094 /// another bound representation. 0095 /// 0096 /// @param [in] geoContext The geometry context 0097 /// @param [in] surface is the surface to which the covariance is forwarded to 0098 /// @param [in, out] boundCovariance The covariance matrix of the state 0099 /// @param [in, out] fullTransportJacobian Full jacobian since the last reset 0100 /// @param [in, out] freeTransportJacobian Global jacobian since the last reset 0101 /// @param [in, out] freeToPathDerivatives Path length derivatives 0102 /// @param [in, out] boundToFreeJacobian Projection jacobian of the last bound 0103 /// parametrisation to free parameters 0104 /// @param [in, out] freeParameters Free, nominal parametrisation 0105 /// @param [in] freeToBoundCorrection Correction for non-linearity effect during 0106 /// transform from free to bound 0107 /// 0108 /// @note No check is done if the position is actually on the surface 0109 /// 0110 void transportCovarianceToBound( 0111 const GeometryContext& geoContext, const Surface& surface, 0112 BoundSquareMatrix& boundCovariance, BoundMatrix& fullTransportJacobian, 0113 FreeMatrix& freeTransportJacobian, FreeVector& freeToPathDerivatives, 0114 BoundToFreeMatrix& boundToFreeJacobian, FreeVector& freeParameters, 0115 const FreeToBoundCorrection& freeToBoundCorrection); 0116 0117 /// @brief Method for on-demand covariance transport of a bound/curvilinear 0118 /// to a new curvilinear representation. 0119 /// 0120 /// @param [in, out] boundCovariance The covariance matrix of the state 0121 /// @param [in, out] fullTransportJacobian Full jacobian since the last reset 0122 /// @param [in, out] freeTransportJacobian Global jacobian since the last reset 0123 /// @param [in, out] freeToPathDerivatives Path length derivatives 0124 /// @param [in, out] boundToFreeJacobian Projection jacobian of the last bound 0125 /// parametrisation to free parameters 0126 /// @param [in] direction Normalised direction vector 0127 /// 0128 void transportCovarianceToCurvilinear(BoundSquareMatrix& boundCovariance, 0129 BoundMatrix& fullTransportJacobian, 0130 FreeMatrix& freeTransportJacobian, 0131 FreeVector& freeToPathDerivatives, 0132 BoundToFreeMatrix& boundToFreeJacobian, 0133 const Vector3& direction); 0134 0135 } // namespace Acts::detail::sympy
| [ Source navigation ] | [ Diff markup ] | [ Identifier search ] | [ general search ] |
|
This page was automatically generated by the 2.3.7 LXR engine. The LXR team |
|