00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 // 00027 // $Id: G4MagIntegratorDriver.icc 69786 2013-05-15 09:38:51Z gcosmo $ 00028 // 00029 // -------------------------------------------------------------------- 00030 00031 inline 00032 G4double G4MagInt_Driver::GetHmin() const 00033 { 00034 return fMinimumStep; 00035 } 00036 00037 inline 00038 G4double G4MagInt_Driver::Hmin() const 00039 { 00040 return fMinimumStep; 00041 } 00042 00043 inline 00044 G4double G4MagInt_Driver::GetSafety() const 00045 { 00046 return safety; 00047 } 00048 00049 inline 00050 G4double G4MagInt_Driver::GetPshrnk() const 00051 { 00052 return pshrnk; 00053 } 00054 00055 inline 00056 G4double G4MagInt_Driver::GetPgrow() const 00057 { 00058 return pgrow; 00059 } 00060 00061 inline 00062 G4double G4MagInt_Driver::GetErrcon() const 00063 { 00064 return errcon; 00065 } 00066 00067 inline 00068 void G4MagInt_Driver::SetHmin(G4double newval) 00069 { 00070 fMinimumStep = newval; 00071 } 00072 00073 inline 00074 G4double G4MagInt_Driver::ComputeAndSetErrcon() 00075 { 00076 errcon = std::pow(max_stepping_increase/GetSafety(),1.0/GetPgrow()); 00077 return errcon; 00078 } 00079 00080 inline 00081 void G4MagInt_Driver::ReSetParameters(G4double new_safety) 00082 { 00083 safety = new_safety; 00084 pshrnk = -1.0 / pIntStepper->IntegratorOrder(); 00085 pgrow = -1.0 / (1.0 + pIntStepper->IntegratorOrder()); 00086 ComputeAndSetErrcon(); 00087 } 00088 00089 inline 00090 void G4MagInt_Driver::SetSafety(G4double val) 00091 { 00092 safety=val; 00093 ComputeAndSetErrcon(); 00094 } 00095 00096 inline 00097 void G4MagInt_Driver::SetPgrow(G4double val) 00098 { 00099 pgrow=val; 00100 ComputeAndSetErrcon(); 00101 } 00102 00103 inline 00104 void G4MagInt_Driver::SetErrcon(G4double val) 00105 { 00106 errcon=val; 00107 } 00108 00109 inline 00110 void G4MagInt_Driver::RenewStepperAndAdjust(G4MagIntegratorStepper *pItsStepper) 00111 { 00112 pIntStepper = pItsStepper; 00113 ReSetParameters(); 00114 } 00115 00116 inline 00117 void G4MagInt_Driver::SetChargeMomentumMass(G4double particleCharge, // e+ 00118 G4double MomentumXc, 00119 G4double Mass ) 00120 { 00121 pIntStepper->GetEquationOfMotion() 00122 ->SetChargeMomentumMass(particleCharge, MomentumXc, Mass); 00123 } 00124 00125 inline 00126 const G4MagIntegratorStepper* G4MagInt_Driver::GetStepper() const 00127 { 00128 return pIntStepper; 00129 } 00130 00131 inline 00132 G4int G4MagInt_Driver::GetMaxNoSteps() const 00133 { 00134 return fMaxNoSteps; 00135 } 00136 00137 inline 00138 void G4MagInt_Driver::SetMaxNoSteps(G4int val) 00139 { 00140 fMaxNoSteps= val; 00141 } 00142 00143 inline 00144 void G4MagInt_Driver::GetDerivatives(const G4FieldTrack &y_curr, // const, INput 00145 G4double dydx[]) // OUTput 00146 { 00147 G4double tmpValArr[G4FieldTrack::ncompSVEC]; 00148 y_curr.DumpToArray( tmpValArr ); 00149 pIntStepper -> RightHandSide( tmpValArr , dydx ); 00150 } 00151 00152 inline 00153 G4double G4MagInt_Driver::GetVerboseLevel() const 00154 { 00155 return fVerboseLevel; 00156 } 00157 00158 inline 00159 void G4MagInt_Driver::SetVerboseLevel(G4int newLevel) 00160 { 00161 fVerboseLevel= newLevel; 00162 } 00163 00164 inline 00165 G4double G4MagInt_Driver::GetSmallestFraction() const 00166 { 00167 return fSmallestFraction; 00168 }