1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: G4MagIntegratorDriver.icc,v 1.13 2007/05/10 10:10:48 japost Exp $ |
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28 | // GEANT4 tag $Name: $ |
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29 | // |
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30 | // -------------------------------------------------------------------- |
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31 | |
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32 | inline |
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33 | G4double G4MagInt_Driver::GetHmin() const |
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34 | { |
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35 | return fMinimumStep; |
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36 | } |
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37 | |
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38 | inline |
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39 | G4double G4MagInt_Driver::Hmin() const |
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40 | { |
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41 | return fMinimumStep; |
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42 | } |
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43 | |
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44 | inline |
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45 | G4double G4MagInt_Driver::GetSafety() const |
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46 | { |
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47 | return safety; |
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48 | } |
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49 | |
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50 | inline |
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51 | G4double G4MagInt_Driver::GetPshrnk() const |
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52 | { |
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53 | return pshrnk; |
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54 | } |
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55 | |
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56 | inline |
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57 | G4double G4MagInt_Driver::GetPgrow() const |
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58 | { |
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59 | return pgrow; |
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60 | } |
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61 | |
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62 | inline |
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63 | G4double G4MagInt_Driver::GetErrcon() const |
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64 | { |
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65 | return errcon; |
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66 | } |
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67 | |
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68 | inline |
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69 | void G4MagInt_Driver::SetHmin(G4double newval) |
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70 | { |
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71 | fMinimumStep = newval; |
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72 | } |
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73 | |
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74 | inline |
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75 | G4double G4MagInt_Driver::ComputeAndSetErrcon() |
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76 | { |
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77 | errcon = std::pow(max_stepping_increase/GetSafety(),1.0/GetPgrow()); |
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78 | return errcon; |
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79 | } |
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80 | |
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81 | inline |
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82 | void G4MagInt_Driver::ReSetParameters(G4double new_safety) |
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83 | { |
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84 | safety = new_safety; |
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85 | pshrnk = -1.0 / pIntStepper->IntegratorOrder(); |
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86 | pgrow = -1.0 / (1.0 + pIntStepper->IntegratorOrder()); |
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87 | ComputeAndSetErrcon(); |
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88 | } |
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89 | |
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90 | inline |
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91 | void G4MagInt_Driver::SetSafety(G4double val) |
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92 | { |
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93 | safety=val; |
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94 | ComputeAndSetErrcon(); |
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95 | } |
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96 | |
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97 | inline |
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98 | void G4MagInt_Driver::SetPgrow(G4double val) |
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99 | { |
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100 | pgrow=val; |
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101 | ComputeAndSetErrcon(); |
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102 | } |
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103 | |
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104 | inline |
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105 | void G4MagInt_Driver::SetErrcon(G4double val) |
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106 | { |
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107 | errcon=val; |
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108 | } |
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109 | |
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110 | inline |
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111 | void G4MagInt_Driver::RenewStepperAndAdjust(G4MagIntegratorStepper *pItsStepper) |
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112 | { |
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113 | pIntStepper = pItsStepper; |
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114 | ReSetParameters(); |
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115 | } |
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116 | |
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117 | inline |
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118 | void G4MagInt_Driver::SetChargeMomentumMass(G4double particleCharge, // e+ |
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119 | G4double MomentumXc, |
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120 | G4double Mass ) |
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121 | { |
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122 | pIntStepper->GetEquationOfMotion() |
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123 | ->SetChargeMomentumMass(particleCharge, MomentumXc, Mass); |
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124 | } |
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125 | |
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126 | inline |
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127 | const G4MagIntegratorStepper* G4MagInt_Driver::GetStepper() const |
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128 | { |
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129 | return pIntStepper; |
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130 | } |
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131 | |
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132 | inline |
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133 | G4int G4MagInt_Driver::GetMaxNoSteps() const |
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134 | { |
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135 | return fMaxNoSteps; |
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136 | } |
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137 | |
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138 | inline |
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139 | void G4MagInt_Driver::SetMaxNoSteps(G4int val) |
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140 | { |
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141 | fMaxNoSteps= val; |
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142 | } |
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143 | |
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144 | inline |
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145 | void G4MagInt_Driver::GetDerivatives(const G4FieldTrack &y_curr, // const, INput |
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146 | G4double dydx[]) // OUTput |
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147 | { |
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148 | G4double tmpValArr[G4FieldTrack::ncompSVEC]; |
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149 | y_curr.DumpToArray( tmpValArr ); |
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150 | pIntStepper -> RightHandSide( tmpValArr , dydx ); |
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151 | } |
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152 | |
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153 | inline |
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154 | G4double G4MagInt_Driver::GetVerboseLevel() const |
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155 | { |
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156 | return fVerboseLevel; |
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157 | } |
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158 | |
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159 | inline |
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160 | void G4MagInt_Driver::SetVerboseLevel(G4int newLevel) |
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161 | { |
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162 | fVerboseLevel= newLevel; |
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163 | } |
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164 | |
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165 | inline |
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166 | G4double G4MagInt_Driver::GetSmallestFraction() const |
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167 | { |
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168 | return fSmallestFraction; |
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169 | } |
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