1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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9 | // * include a list of copyright holders. * |
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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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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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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 | // |
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28 | |
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29 | #ifndef G4ExcitedString_h |
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30 | #define G4ExcitedString_h 1 |
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31 | |
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32 | // ------------------------------------------------------------ |
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33 | // GEANT 4 class header file |
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34 | // |
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35 | // ---------------- G4ExcitedString ---------------- |
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36 | // by Gunter Folger, June 1998. |
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37 | // class for an excited string used by Parton String Models |
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38 | // ------------------------------------------------------------ |
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39 | |
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40 | #include "G4ios.hh" |
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41 | #include "globals.hh" |
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42 | #include "G4ThreeVector.hh" |
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43 | #include "G4LorentzVector.hh" |
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44 | #include "G4LorentzRotation.hh" |
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45 | #include "G4Parton.hh" |
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46 | #include "G4PartonVector.hh" |
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47 | #include "G4KineticTrack.hh" |
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48 | #include "G4HadronicException.hh" |
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49 | #include <algorithm> |
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50 | |
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51 | class G4ExcitedString |
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52 | { |
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53 | |
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54 | public: |
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55 | |
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56 | enum { |
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57 | PROJECTILE = 1, |
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58 | TARGET = -1 |
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59 | }; |
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60 | |
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61 | G4ExcitedString(G4Parton* Color, G4Parton* Gluon, G4Parton* AntiColor, G4int Direction=PROJECTILE); |
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62 | G4ExcitedString(G4Parton* Color, G4Parton* AntiColor, G4int Direction=PROJECTILE); |
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63 | G4ExcitedString(G4KineticTrack * atrack); |
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64 | |
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65 | G4ExcitedString(const G4ExcitedString &right); |
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66 | |
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67 | ~G4ExcitedString(); |
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68 | |
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69 | int operator==(const G4ExcitedString &right) const; |
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70 | |
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71 | int operator!=(const G4ExcitedString &right) const; |
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72 | |
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73 | G4double GetTimeOfCreation() const; // Uzhi 15.05.08 |
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74 | |
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75 | void SetTimeOfCreation(G4double aTime); // Uzhi 15.05.08 |
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76 | |
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77 | const G4ThreeVector & GetPosition() const; |
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78 | |
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79 | void SetPosition(const G4ThreeVector &aPosition); |
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80 | |
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81 | const G4PartonVector * GetPartonList() const; |
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82 | |
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83 | G4LorentzVector Get4Momentum() const; |
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84 | void LorentzRotate(const G4LorentzRotation & rotation); |
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85 | |
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86 | void InsertParton(G4Parton * aParton, const G4Parton * addafter = NULL); |
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87 | |
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88 | G4LorentzRotation TransformToCenterOfMass(); |
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89 | G4LorentzRotation TransformToAlignedCms(); |
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90 | |
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91 | |
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92 | void Boost(G4ThreeVector& Velocity); |
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93 | |
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94 | G4Parton* GetColorParton(void) const; |
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95 | G4Parton* GetGluon(void) const; |
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96 | G4Parton* GetAntiColorParton(void) const; |
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97 | G4Parton* GetGluon(G4int GluonPos) const; |
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98 | |
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99 | G4KineticTrack * GetKineticTrack() const; |
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100 | |
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101 | G4Parton* GetLeftParton(void) const; |
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102 | G4Parton* GetRightParton(void) const; |
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103 | |
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104 | G4bool IsItKinkyString(void) const; |
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105 | G4int GetDirection(void) const; |
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106 | |
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107 | G4bool IsExcited() const; |
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108 | |
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109 | |
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110 | private: |
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111 | |
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112 | G4int theDirection; // must be 1 or -1 (PROJECTILE or TARGET) |
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113 | G4double theTimeOfCreation; // Uzhi 15.05.08 |
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114 | G4ThreeVector thePosition; |
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115 | G4PartonVector thePartons; // would like initial capacity for 3 Partons. |
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116 | G4KineticTrack* theTrack; |
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117 | |
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118 | }; |
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119 | |
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120 | inline |
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121 | int G4ExcitedString::operator==(const G4ExcitedString &right) const |
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122 | { |
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123 | return this == &right; |
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124 | } |
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125 | |
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126 | inline |
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127 | int G4ExcitedString::operator!=(const G4ExcitedString &right) const |
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128 | { |
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129 | return this != &right; |
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130 | } |
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131 | |
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132 | inline |
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133 | G4double G4ExcitedString::GetTimeOfCreation() const // Uzhi 15.05.08 |
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134 | { |
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135 | return theTimeOfCreation; |
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136 | } |
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137 | |
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138 | inline |
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139 | void G4ExcitedString::SetTimeOfCreation(G4double aTime) // Uzhi 15.05.08 |
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140 | { |
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141 | theTimeOfCreation=aTime; // Uzhi 15.05.08 |
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142 | } |
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143 | |
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144 | inline |
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145 | const G4ThreeVector & G4ExcitedString::GetPosition() const |
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146 | { |
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147 | return thePosition; |
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148 | } |
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149 | |
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150 | inline |
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151 | void G4ExcitedString::SetPosition(const G4ThreeVector &aPosition) |
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152 | { |
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153 | thePosition= aPosition; |
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154 | } |
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155 | |
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156 | inline |
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157 | G4LorentzVector G4ExcitedString::Get4Momentum() const |
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158 | { |
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159 | G4LorentzVector momentum; |
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160 | for ( unsigned int index=0; index < thePartons.size() ; index++ ) |
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161 | { |
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162 | // std::cout << "HPW "<<thePartons[index]->Get4Momentum()<<std::endl; |
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163 | momentum += thePartons[index]->Get4Momentum(); |
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164 | } |
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165 | return momentum; |
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166 | } |
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167 | |
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168 | inline |
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169 | void G4ExcitedString::LorentzRotate(const G4LorentzRotation & rotation) |
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170 | { |
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171 | for ( unsigned int index=0; index < thePartons.size() ; index++ ) |
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172 | { |
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173 | thePartons[index]->Set4Momentum(rotation*thePartons[index]->Get4Momentum()); |
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174 | } |
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175 | } |
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176 | |
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177 | inline |
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178 | void G4ExcitedString::InsertParton(G4Parton *aParton, const G4Parton * addafter) |
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179 | { |
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180 | |
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181 | G4PartonVector::iterator insert_index; |
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182 | |
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183 | if ( addafter != NULL ) |
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184 | { |
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185 | insert_index=std::find(thePartons.begin(), thePartons.end(), addafter); |
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186 | if (insert_index == thePartons.end()) // No object addafter in thePartons |
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187 | { |
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188 | G4String text = "G4ExcitedString::InsertParton called with invalid second argument"; |
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189 | throw G4HadronicException(__FILE__, __LINE__, text); |
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190 | } |
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191 | } |
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192 | |
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193 | thePartons.insert(insert_index+1, aParton); |
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194 | } |
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195 | |
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196 | inline |
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197 | G4LorentzRotation G4ExcitedString::TransformToCenterOfMass() |
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198 | { |
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199 | G4LorentzVector momentum=Get4Momentum(); |
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200 | G4LorentzRotation toCms(-1*momentum.boostVector()); |
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201 | |
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202 | for ( unsigned int index=0; index < thePartons.size() ; index++ ) |
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203 | { |
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204 | momentum=toCms * thePartons[index]->Get4Momentum(); |
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205 | thePartons[index]->Set4Momentum(momentum); |
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206 | } |
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207 | return toCms; |
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208 | } |
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209 | |
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210 | inline |
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211 | G4LorentzRotation G4ExcitedString::TransformToAlignedCms() |
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212 | { |
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213 | G4LorentzVector momentum=Get4Momentum(); |
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214 | G4LorentzRotation toAlignedCms(-1*momentum.boostVector()); |
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215 | |
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216 | momentum= toAlignedCms* thePartons[0]->Get4Momentum(); |
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217 | toAlignedCms.rotateZ(-1*momentum.phi()); |
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218 | toAlignedCms.rotateY(-1*momentum.theta()); |
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219 | |
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220 | for ( unsigned int index=0; index < thePartons.size() ; index++ ) |
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221 | { |
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222 | momentum=toAlignedCms * thePartons[index]->Get4Momentum(); |
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223 | thePartons[index]->Set4Momentum(momentum); |
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224 | } |
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225 | return toAlignedCms; |
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226 | } |
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227 | |
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228 | |
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229 | inline |
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230 | const G4PartonVector * G4ExcitedString::GetPartonList() const |
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231 | { |
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232 | return &thePartons; |
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233 | } |
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234 | |
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235 | inline |
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236 | G4KineticTrack * G4ExcitedString::GetKineticTrack() const |
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237 | { |
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238 | return theTrack; |
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239 | } |
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240 | |
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241 | inline |
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242 | G4bool G4ExcitedString::IsExcited() const |
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243 | { |
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244 | return theTrack == 0; |
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245 | } |
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246 | |
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247 | |
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248 | #endif |
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249 | |
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250 | |
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