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: G4CurveRayIntersection.icc,v 1.4 2006/06/29 18:39:07 gunter Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-03 $ |
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29 | // |
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30 | // -------------------------------------------------------------------- |
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31 | // GEANT 4 inline definitions file |
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32 | // |
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33 | // G4CurveRayIntersection.icc |
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34 | // |
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35 | // Implementation of inline methods of G4CurveRayIntersection |
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36 | // -------------------------------------------------------------------- |
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37 | |
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38 | inline |
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39 | void G4CurveRayIntersection::Init(G4Curve& c0, const G4Ray& r0) |
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40 | { |
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41 | c= &c0; |
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42 | r= &r0; |
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43 | d= kInfinity; |
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44 | notComputed= allFlags; |
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45 | } |
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46 | |
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47 | ////////////////////////////////////////////////////////////////////////////// |
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48 | |
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49 | inline |
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50 | const G4Ray& G4CurveRayIntersection::GetRay() const |
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51 | { |
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52 | return *r; |
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53 | } |
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54 | |
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55 | ////////////////////////////////////////////////////////////////////////////// |
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56 | |
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57 | inline |
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58 | void G4CurveRayIntersection::Reset() |
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59 | { |
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60 | d= +kInfinity; |
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61 | notComputed= uFlag|pFlag; |
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62 | } |
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63 | |
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64 | inline void |
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65 | G4CurveRayIntersection::ResetPPoint(G4double u0) |
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66 | { |
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67 | d= 0; |
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68 | u= u0; |
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69 | notComputed= pFlag|dFlag; |
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70 | } |
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71 | |
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72 | inline void |
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73 | G4CurveRayIntersection::Reset(const G4Point3D& p0) |
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74 | { |
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75 | d= 0; |
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76 | p= p0; |
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77 | notComputed= uFlag|dFlag; |
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78 | } |
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79 | |
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80 | inline |
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81 | void G4CurveRayIntersection::Reset(G4double u0, const G4Point3D& p0) |
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82 | { |
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83 | d= 0; |
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84 | u= u0; |
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85 | p= p0; |
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86 | notComputed= dFlag; |
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87 | } |
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88 | |
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89 | inline void |
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90 | G4CurveRayIntersection::ResetDistance(G4double d0) |
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91 | { |
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92 | d= d0; |
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93 | notComputed= uFlag|pFlag; |
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94 | } |
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95 | |
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96 | inline |
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97 | void G4CurveRayIntersection::Reset(G4double u0, G4double d0) |
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98 | { |
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99 | d= d0; |
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100 | u= u0; |
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101 | notComputed= pFlag; |
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102 | } |
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103 | |
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104 | inline |
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105 | void G4CurveRayIntersection::Reset(const G4Point3D& p0, G4double d0) |
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106 | { |
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107 | d= d0; |
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108 | p= p0; |
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109 | notComputed= uFlag; |
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110 | } |
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111 | |
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112 | inline |
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113 | void G4CurveRayIntersection::Reset(G4double u0, const G4Point3D& p0, |
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114 | G4double d0) |
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115 | { |
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116 | d= d0; |
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117 | u= u0; |
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118 | p= p0; |
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119 | notComputed= 0; |
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120 | } |
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121 | |
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122 | ////////////////////////////////////////////////////////////////////////////// |
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123 | |
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124 | inline |
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125 | G4double G4CurveRayIntersection::GetPPoint() |
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126 | { |
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127 | if (notComputed & uFlag) { |
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128 | if (notComputed & pFlag) { |
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129 | p= r->GetPoint(d); |
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130 | notComputed &= ~pFlag; |
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131 | } |
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132 | u= c->GetPPoint(p); |
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133 | notComputed &= ~uFlag; |
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134 | } |
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135 | return u; |
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136 | } |
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137 | |
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138 | inline |
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139 | const G4Point3D& G4CurveRayIntersection::GetPoint() |
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140 | { |
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141 | if (notComputed & pFlag) { |
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142 | if (notComputed & dFlag) { |
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143 | p= c->GetPoint(u); |
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144 | } else { |
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145 | p= r->GetPoint(d); |
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146 | } |
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147 | notComputed &= ~pFlag; |
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148 | } |
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149 | return p; |
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150 | } |
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151 | |
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152 | inline |
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153 | G4double G4CurveRayIntersection::GetDistance() |
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154 | { |
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155 | if (notComputed & dFlag) { |
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156 | if (notComputed & pFlag) { |
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157 | p= c->GetPoint(u); |
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158 | notComputed &= ~pFlag; |
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159 | } |
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160 | d= r->GetPPoint(p); |
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161 | notComputed &= ~dFlag; |
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162 | } |
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163 | return d; |
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164 | } |
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165 | |
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166 | ////////////////////////////////////////////////////////////////////////////// |
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167 | |
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168 | inline |
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169 | void G4CurveRayIntersection::UpdateWithPointOnCurve(G4CurveRayIntersection& is) |
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170 | { |
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171 | if (d!=kInfinity) { |
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172 | // not the first intersection |
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173 | G4double dTmp= is.GetDistance(); |
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174 | if (dTmp < kCarTolerance || GetDistance() <= dTmp) { |
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175 | // not on ray or not the closest intersection |
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176 | return; |
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177 | } |
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178 | } |
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179 | // accepted |
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180 | *this= is; |
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181 | } |
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182 | |
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183 | inline |
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184 | void G4CurveRayIntersection::Update(G4CurveRayIntersection& is) |
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185 | { |
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186 | if (c->IsBounded()) { |
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187 | if (!c->IsPOn(is.GetPPoint())) { |
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188 | return; |
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189 | } |
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190 | } |
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191 | UpdateWithPointOnCurve(is); |
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192 | } |
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