1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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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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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: G4PhysicsVector.icc,v 1.30 2010/09/20 16:22:56 gcosmo Exp $ |
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28 | // GEANT4 tag $Name: global-V09-03-22 $ |
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29 | // |
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30 | // |
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31 | //--------------------------------------------------------------- |
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32 | // GEANT 4 class source file |
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33 | // |
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34 | // G4PhysicsVector.icc |
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35 | // |
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36 | // Description: |
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37 | // A physics vector which has values of energy-loss, cross-section, |
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38 | // and other physics values of a particle in matter in a given |
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39 | // range of the energy, momentum, etc. |
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40 | // This class serves as the base class for a vector having various |
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41 | // energy scale, for example like 'log', 'linear', 'free', etc. |
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42 | // |
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43 | //--------------------------------------------------------------- |
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44 | |
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45 | inline |
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46 | G4double G4PhysicsVector::GetLastEnergy() const |
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47 | { |
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48 | return cache->lastEnergy; |
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49 | } |
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50 | |
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51 | inline |
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52 | G4double G4PhysicsVector::GetLastValue() const |
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53 | { |
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54 | return cache->lastValue; |
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55 | } |
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56 | |
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57 | inline |
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58 | size_t G4PhysicsVector::GetLastBin() const |
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59 | { |
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60 | return cache->lastBin; |
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61 | } |
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62 | |
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63 | inline |
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64 | G4double G4PhysicsVector::operator[](const size_t binNumber) const |
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65 | { |
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66 | return dataVector[binNumber]; |
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67 | } |
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68 | |
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69 | //--------------------------------------------------------------- |
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70 | |
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71 | inline |
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72 | G4double G4PhysicsVector::operator()(const size_t binNumber) const |
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73 | { |
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74 | return dataVector[binNumber]; |
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75 | } |
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76 | |
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77 | //--------------------------------------------------------------- |
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78 | |
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79 | inline |
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80 | G4double G4PhysicsVector::Energy(const size_t binNumber) const |
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81 | { |
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82 | return binVector[binNumber]; |
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83 | } |
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84 | |
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85 | //--------------------------------------------------------------- |
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86 | |
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87 | inline |
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88 | size_t G4PhysicsVector::GetVectorLength() const |
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89 | { |
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90 | return numberOfNodes; |
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91 | } |
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92 | |
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93 | //--------------------------------------------------------------- |
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94 | |
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95 | inline |
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96 | G4double G4PhysicsVector::GetValue(G4double theEnergy, G4bool&) |
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97 | { |
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98 | return Value(theEnergy); |
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99 | } |
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100 | |
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101 | //------------------------------------------------ |
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102 | |
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103 | inline |
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104 | G4double G4PhysicsVector::LinearInterpolation(G4int lastBin) |
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105 | { |
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106 | // Linear interpolation is used to get the value. If the give energy |
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107 | // is in the highest bin, no interpolation will be Done. Because |
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108 | // there is an extra bin hidden from a user at locBin=numberOfBin, |
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109 | // the following interpolation is valid even the current locBin= |
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110 | // numberOfBin-1. |
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111 | |
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112 | G4double intplFactor = (cache->lastEnergy-binVector[lastBin]) |
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113 | / (binVector[lastBin + 1]-binVector[lastBin]); // Interpol. factor |
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114 | |
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115 | return dataVector[lastBin] + |
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116 | ( dataVector[lastBin + 1]-dataVector[lastBin] ) * intplFactor; |
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117 | } |
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118 | |
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119 | //--------------------------------------------------------------- |
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120 | |
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121 | inline |
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122 | G4double G4PhysicsVector::SplineInterpolation(G4int lastBin) |
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123 | { |
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124 | // Spline interpolation is used to get the value. If the give energy |
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125 | // is in the highest bin, no interpolation will be Done. Because |
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126 | // there is an extra bin hidden from a user at locBin=numberOfBin, |
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127 | // the following interpolation is valid even the current locBin= |
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128 | // numberOfBin-1. |
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129 | |
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130 | if(0 == secDerivative.size() ) { FillSecondDerivatives(); } |
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131 | |
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132 | // check bin value |
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133 | G4double x1 = binVector[lastBin]; |
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134 | G4double x2 = binVector[lastBin + 1]; |
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135 | G4double delta = x2 - x1; |
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136 | |
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137 | G4double a = (x2 - cache->lastEnergy)/delta; |
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138 | G4double b = (cache->lastEnergy - x1)/delta; |
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139 | |
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140 | // Final evaluation of cubic spline polynomial for return |
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141 | G4double y1 = dataVector[lastBin]; |
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142 | G4double y2 = dataVector[lastBin + 1]; |
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143 | |
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144 | G4double res = a*y1 + b*y2 + |
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145 | ( (a*a*a - a)*secDerivative[lastBin] + |
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146 | (b*b*b - b)*secDerivative[lastBin + 1] )*delta*delta/6.0; |
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147 | |
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148 | return res; |
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149 | } |
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150 | |
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151 | //--------------------------------------------------------------- |
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152 | |
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153 | inline |
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154 | void G4PhysicsVector::Interpolation(G4int lastBin) |
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155 | { |
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156 | if(useSpline) { cache->lastValue = SplineInterpolation(lastBin); } |
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157 | else { cache->lastValue = LinearInterpolation(lastBin); } |
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158 | } |
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159 | |
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160 | //--------------------------------------------------------------- |
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161 | |
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162 | inline |
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163 | void G4PhysicsVector::PutValue(size_t binNumber, G4double theValue) |
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164 | { |
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165 | dataVector[binNumber] = theValue; |
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166 | } |
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167 | |
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168 | //--------------------------------------------------------------- |
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169 | |
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170 | inline |
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171 | G4bool G4PhysicsVector::IsFilledVectorExist() const |
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172 | { |
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173 | G4bool status=false; |
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174 | |
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175 | if(numberOfNodes > 0) { status=true; } |
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176 | return status; |
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177 | } |
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178 | |
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179 | //--------------------------------------------------------------- |
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180 | |
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181 | inline |
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182 | void G4PhysicsVector::PutComment(const G4String& theComment) |
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183 | { |
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184 | comment = theComment; |
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185 | } |
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186 | |
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187 | //--------------------------------------------------------------- |
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188 | |
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189 | inline |
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190 | const G4String& G4PhysicsVector::GetComment() const |
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191 | { |
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192 | return comment; |
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193 | } |
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194 | |
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195 | //--------------------------------------------------------------- |
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196 | |
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197 | inline |
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198 | G4PhysicsVectorType G4PhysicsVector::GetType() const |
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199 | { |
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200 | return type; |
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201 | } |
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202 | |
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203 | //--------------------------------------------------------------- |
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204 | |
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205 | inline |
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206 | void G4PhysicsVector::SetSpline(G4bool val) |
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207 | { |
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208 | useSpline = val; |
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209 | } |
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