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This commit is contained in:
Gabriele Cosmo
2019-12-06 15:12:28 +01:00
parent b2a62ae692
commit 5baee230e9
2997 changed files with 141580 additions and 98673 deletions
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source/geometry/magneticfield/include/G4RKIntegrationDriver.hh
+33 -33
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@@ -23,46 +23,42 @@
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
//
//
//
// class G4RKIntegrationDriver
// G4RKIntegrationDriver
//
// Class description:
//
// Driver class which controls the integration error of a
// Runge-Kutta stepper
// History:
// - Created. D.Sorokin
// Created: D.Sorokin, 2017
// --------------------------------------------------------------------
#ifndef G4RKIntegrationDriver_HH
#define G4RKIntegrationDriver_HH
#ifndef G4RKINTEGRATIONDRIVER_HH
#define G4RKINTEGRATIONDRIVER_HH
#include "G4VIntegrationDriver.hh"
template <class T>
class G4RKIntegrationDriver : public G4VIntegrationDriver {
public:
class G4RKIntegrationDriver : public G4VIntegrationDriver
{
public:
G4RKIntegrationDriver(T* stepper);
G4RKIntegrationDriver(const G4RKIntegrationDriver &) = delete;
const G4RKIntegrationDriver& operator =(const G4RKIntegrationDriver &) = delete;
G4RKIntegrationDriver(const G4RKIntegrationDriver&) = delete;
G4RKIntegrationDriver& operator=(const G4RKIntegrationDriver&) = delete;
virtual void GetDerivatives(const G4FieldTrack& track,
G4double dydx[]) const override;
G4double dydx[]) const override;
virtual void GetDerivatives(const G4FieldTrack& track,
G4double dydx[],
G4double field[]) const override;
G4double dydx[],
G4double field[]) const override;
// Taking the last step's normalised error, calculate
// a step size for the next step.
// Do not limit the next step's size within a factor of the
// current one.
virtual G4double ComputeNewStepSize(G4double errMaxNorm, // normalised error
G4double hstepCurrent) override; // current step size
virtual G4double ComputeNewStepSize(G4double errMaxNorm, // normalised error
G4double hstepCurrent) override;
// Taking the last step's normalised error, calculate
// a step size for the next step.
// Do not limit the next step's size within a factor of the current one.
virtual G4EquationOfMotion* GetEquationOfMotion() override;
virtual void SetEquationOfMotion(G4EquationOfMotion* equation) override;
@@ -77,22 +73,23 @@ public:
virtual void RenewStepperAndAdjust(G4MagIntegratorStepper* stepper) override;
// i) sets the exponents (pgrow & pshrnk),
// using the current Stepper's order,
// ii) sets the safety
void ReSetParameters(G4double safety = 0.9);
void SetSafety(G4double valS);
// i) sets the exponents (pgrow & pshrnk),
// using the current Stepper's order,
// ii) sets the safety
// Modify and Get the Maximum number of Steps that can be
// taken for the integration of a single segment -
// (ie a single call to AccurateAdvance).
G4int GetMaxNoSteps() const;
void SetMaxNoSteps(G4int val);
// Modify and Get the Maximum number of Steps that can be
// taken for the integration of a single segment -
// (ie a single call to AccurateAdvance).
G4double GetSmallestFraction() const;
void SetSmallestFraction(G4double val);
protected:
protected:
G4double ShrinkStepSize(G4double h, G4double error) const;
G4double GrowStepSize(G4double h, G4double error) const;
@@ -101,25 +98,28 @@ protected:
void UpdateErrorConstraints();
private:
private:
inline void RenewStepperAndAdjustImpl(T* stepper);
G4int fMaxNoSteps;
// The (default) maximum number of steps is Base
// divided by the order of Stepper
G4int fMaxStepBase;
// The (default) maximum number of steps is Base
// divided by the order of Stepper
// Parameters used to grow and shrink trial stepsize.
//
G4double safety;
G4double pshrnk; // exponent for shrinking
G4double pgrow; // exponent for growth
// muximum error values for shrinking / growing (optimisation).
//
G4double errorConstraintShrink;
G4double errorConstraintGrow;
T* pIntStepper;
T* pIntStepper = nullptr;
};
#include "G4RKIntegrationDriver.icc"