Gabriele Cosmo
98 lines
3.5 KiB
Plaintext
98 lines
3.5 KiB
Plaintext
// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// Helper namespace field_utils inline implementation
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// Author: Dmitry Sorokin (CERN, Google Summer of Code 2017), 13.10.2017
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// Supervision: John Apostolakis (CERN)
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// --------------------------------------------------------------------
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namespace field_utils {
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namespace internal
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{
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template<class T>
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std::size_t getFirstIndex(const T& value)
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{
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return static_cast<std::size_t>(value);
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}
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}
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template <typename ArrayType>
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inline G4double getValue(const ArrayType& array, Value1D value)
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{
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const auto begin = internal::getFirstIndex(value);
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return array[begin];
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}
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template <typename ArrayType>
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G4double getValue2(const ArrayType& array, Value1D value)
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{
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return sqr(getValue(array, value));
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}
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template <typename ArrayType>
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G4double getValue(const ArrayType& array, Value3D value)
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{
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return std::sqrt(getValue2(array, value));
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}
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template <typename ArrayType>
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G4double getValue2(const ArrayType& array, const Value3D value)
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{
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const auto begin = internal::getFirstIndex(value);
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return sqr(array[begin]) + sqr(array[begin+1]) + sqr(array[begin+2]);
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}
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template <typename ArrayType>
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G4ThreeVector makeVector(const ArrayType& array, Value3D value)
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{
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const auto begin = internal::getFirstIndex(value);
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return G4ThreeVector(array[begin], array[begin + 1], array[begin + 2]);
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}
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template <typename SourceArray, typename TargetArray>
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void setValue(const SourceArray& src, Value1D value, TargetArray& trg)
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{
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const auto begin = internal::getFirstIndex(value);
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trg[begin] = src[begin];
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}
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template <typename SourceArray, typename TargetArray, typename ...TargetArrays>
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void setValue(const SourceArray& src, Value1D value,
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TargetArray& trg, TargetArrays&... trgs)
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{
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const auto begin = internal::getFirstIndex(value);
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trg[begin] = src[begin];
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setValue(src, value, trgs...);
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}
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template <typename T>
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T clamp(T value, T lo, T hi)
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{
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return std::min(std::max(lo, value), hi);
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}
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} // field_utils
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