Gabriele Cosmo
118 lines
4.4 KiB
C++
118 lines
4.4 KiB
C++
//
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// ********************************************************************
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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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// G4QSSDriver
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//
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// QSS Interpolator Driver
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// Authors: Lucio Santi, Rodrigo Castro (Univ. Buenos Aires), 2018-2021
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// --------------------------------------------------------------------
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#ifndef G4QSSDriver_HH
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#define G4QSSDriver_HH
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#include "G4InterpolationDriver.hh"
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#include "G4QSSMessenger.hh"
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/**
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* @brief G4QSSDriver is a templated driver class defining the QSS
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* (Quantum State Simulation) Interpolator Driver.
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*/
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template <class T>
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class G4QSSDriver : public G4InterpolationDriver<T, true>
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{
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public:
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/**
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* Constructor for G4QSSDriver.
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* @param[in] T Pointer to the stepper algorithm.
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*/
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inline G4QSSDriver(T* stepper);
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/**
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* Copy constructor and assignment operator not allowed.
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*/
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G4QSSDriver(const G4QSSDriver&) = delete;
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const G4QSSDriver& operator=(const G4QSSDriver&) = delete;
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/**
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* Dispatch interface method for initialisation/reset of driver.
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*/
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void OnStartTracking() override;
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/**
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* Computes the step to take, based on chord limits.
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* @param[in,out] track The current track in field.
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* @param[in] hstep Proposed step length.
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* @param[in] eps Requested accuracy, y_err/hstep.
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* @param[in] chordDistance Maximum sagitta distance.
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* @returns The length of step taken.
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*/
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inline G4double AdvanceChordLimited(G4FieldTrack& track,
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G4double hstep,
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G4double eps,
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G4double chordDistance) override;
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/**
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* Dispatch interface method for computing step.
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*/
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inline void OnComputeStep(const G4FieldTrack* track) override;
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/**
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* Setter for driver precision parameters.
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*/
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inline void SetPrecision(G4double dq_rel, G4double dq_min);
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/**
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* Takes one Step that is as large as possible while satisfying the
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* accuracy criterion.
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* @param[in] it Stepper iterator.
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* @param[in,out] y The current track state, y.
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* @param[in] dydx dydx array.
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* @param[in,out] hstep Step to attempt.
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* @param[in] epsStep The relative accuracy.
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* @param[in] curveLength Step start, x.
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* @param[in,out] track Pointer to the Field track. Not used.
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* @returns The step achieved.
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*/
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inline G4double OneGoodStep(typename G4InterpolationDriver<T, true>::StepperIterator it,
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field_utils::State& y,
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field_utils::State& dydx,
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G4double& hstep,
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G4double epsStep,
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G4double curveLength,
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G4FieldTrack* track) override;
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private:
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using Base = G4InterpolationDriver<T, true>;
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G4bool initializedOnFirstRun = false;
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};
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#include "G4QSSDriver.icc"
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#endif
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