Gabriele Cosmo
98 lines
3.9 KiB
C++
98 lines
3.9 KiB
C++
//
|
|
// ********************************************************************
|
|
// * License and Disclaimer *
|
|
// * *
|
|
// * The Geant4 software is copyright of the Copyright Holders of *
|
|
// * the Geant4 Collaboration. It is provided under the terms and *
|
|
// * conditions of the Geant4 Software License, included in the file *
|
|
// * LICENSE and available at http://cern.ch/geant4/license . These *
|
|
// * include a list of copyright holders. *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. Please see the license in the file LICENSE and URL above *
|
|
// * for the full disclaimer and the limitation of liability. *
|
|
// * *
|
|
// * This code implementation is the result of the scientific and *
|
|
// * technical work of the GEANT4 collaboration. *
|
|
// * By using, copying, modifying or distributing the software (or *
|
|
// * any work based on the software) you agree to acknowledge its *
|
|
// * use in resulting scientific publications, and indicate your *
|
|
// * acceptance of all terms of the Geant4 Software license. *
|
|
// ********************************************************************
|
|
//
|
|
//
|
|
// $Id: G4MagErrorStepper.hh,v 1.11 2006/06/29 18:22:50 gunter Exp $
|
|
// GEANT4 tag $Name: geant4-09-01 $
|
|
//
|
|
//
|
|
// class G4MagErrorStepper
|
|
//
|
|
// Class description:
|
|
//
|
|
// Abstract base class for integrator of particle's equation of motion,
|
|
// used in tracking in space dependent magnetic field.
|
|
|
|
// History:
|
|
// 09.12.97 W.Wander <wwc@mit.edu> Created G4MagErrorStepper
|
|
// --------------------------------------------------------------------
|
|
|
|
#ifndef G4MAGERRORSTEPPER_HH
|
|
#define G4MAGERRORSTEPPER_HH
|
|
|
|
#include "G4Types.hh"
|
|
#include "G4MagIntegratorStepper.hh"
|
|
#include "G4Mag_EqRhs.hh"
|
|
#include "G4ThreeVector.hh"
|
|
|
|
class G4MagErrorStepper : public G4MagIntegratorStepper
|
|
{
|
|
public: // with description
|
|
|
|
// G4MagErrorStepper(G4Mag_EqRhs *EqRhs, G4int numberOfVariables);
|
|
G4MagErrorStepper(G4EquationOfMotion *EqRhs, G4int numberOfVariables);
|
|
virtual ~G4MagErrorStepper();
|
|
|
|
void Stepper( const G4double y[],
|
|
const G4double dydx[],
|
|
G4double h,
|
|
G4double yout[],
|
|
G4double yerr[] );
|
|
// The stepper for the Runge Kutta integration. The stepsize
|
|
// is fixed, with the Step size given by h.
|
|
// Integrates ODE starting values y[0 to 6].
|
|
// Outputs yout[] and its estimated error yerr[].
|
|
|
|
virtual void DumbStepper( const G4double y[],
|
|
const G4double dydx[],
|
|
G4double h,
|
|
G4double yout[] ) = 0;
|
|
// Performs a 'dump' Step without error calculation.
|
|
|
|
G4double DistChord() const;
|
|
|
|
private:
|
|
|
|
G4MagErrorStepper(const G4MagErrorStepper&);
|
|
G4MagErrorStepper& operator=(const G4MagErrorStepper&);
|
|
// Private copy constructor and assignment operator.
|
|
|
|
private:
|
|
|
|
G4ThreeVector fInitialPoint, fMidPoint, fFinalPoint;
|
|
// Data stored in order to find the chord
|
|
|
|
// G4int theNumberOfVariables ;
|
|
|
|
G4double *yInitial, *yMiddle, *dydxMid, *yOneStep;
|
|
// The following arrays are used only for temporary storage
|
|
// they are allocated at the class level only for efficiency -
|
|
// so that calls to new and delete are not made in Stepper().
|
|
};
|
|
|
|
#include "G4MagErrorStepper.icc"
|
|
|
|
#endif /* G4MAGERRORSTEPPER_HH */
|