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 | // $Id: G4Orb.cc,v 1.31 2009/12/04 15:39:56 grichine Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-04-beta-01 $ |
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28 | // |
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29 | // class G4Orb |
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30 | // |
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31 | // Implementation for G4Orb class |
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32 | // |
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33 | // History: |
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34 | // |
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35 | // 30.06.04 V.Grichine - bug fixed in DistanceToIn(p,v) on Rmax surface |
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36 | // 20.08.03 V.Grichine - created |
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37 | // |
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38 | ////////////////////////////////////////////////////////////// |
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39 | |
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40 | #include <assert.h> |
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41 | |
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42 | #include "G4Orb.hh" |
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43 | |
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44 | #include "G4VoxelLimits.hh" |
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45 | #include "G4AffineTransform.hh" |
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46 | #include "G4GeometryTolerance.hh" |
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47 | |
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48 | #include "G4VPVParameterisation.hh" |
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49 | |
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50 | #include "Randomize.hh" |
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51 | |
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52 | #include "meshdefs.hh" |
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53 | |
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54 | #include "G4VGraphicsScene.hh" |
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55 | #include "G4Polyhedron.hh" |
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56 | #include "G4NURBS.hh" |
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57 | #include "G4NURBSbox.hh" |
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58 | |
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59 | using namespace CLHEP; |
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60 | |
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61 | // Private enum: Not for external use - used by distanceToOut |
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62 | |
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63 | enum ESide {kNull,kRMax}; |
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64 | |
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65 | // used by normal |
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66 | |
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67 | enum ENorm {kNRMax}; |
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68 | |
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69 | |
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70 | const G4double G4Orb::fEpsilon = 2.e-11; // relative tolerance of fRmax |
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71 | |
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72 | //////////////////////////////////////////////////////////////////////// |
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73 | // |
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74 | // constructor - check positive radius |
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75 | // |
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76 | |
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77 | G4Orb::G4Orb( const G4String& pName,G4double pRmax ) |
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78 | : G4CSGSolid(pName) |
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79 | { |
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80 | |
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81 | G4double kRadTolerance |
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82 | = G4GeometryTolerance::GetInstance()->GetRadialTolerance(); |
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83 | |
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84 | // Check radius |
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85 | // |
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86 | if (pRmax >= 10*kCarTolerance ) |
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87 | { |
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88 | fRmax = pRmax; |
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89 | } |
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90 | else |
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91 | { |
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92 | G4Exception("G4Orb::G4Orb()", "InvalidSetup", FatalException, |
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93 | "Invalid radius > 10*kCarTolerance."); |
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94 | } |
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95 | fRmaxTolerance = std::max( kRadTolerance, fEpsilon*fRmax); |
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96 | |
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97 | } |
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98 | |
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99 | /////////////////////////////////////////////////////////////////////// |
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100 | // |
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101 | // Fake default constructor - sets only member data and allocates memory |
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102 | // for usage restricted to object persistency. |
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103 | // |
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104 | G4Orb::G4Orb( __void__& a ) |
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105 | : G4CSGSolid(a) |
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106 | { |
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107 | } |
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108 | |
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109 | ///////////////////////////////////////////////////////////////////// |
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110 | // |
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111 | // Destructor |
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112 | |
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113 | G4Orb::~G4Orb() |
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114 | { |
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115 | } |
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116 | |
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117 | ////////////////////////////////////////////////////////////////////////// |
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118 | // |
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119 | // Dispatch to parameterisation for replication mechanism dimension |
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120 | // computation & modification. |
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121 | |
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122 | void G4Orb::ComputeDimensions( G4VPVParameterisation* p, |
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123 | const G4int n, |
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124 | const G4VPhysicalVolume* pRep) |
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125 | { |
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126 | p->ComputeDimensions(*this,n,pRep); |
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127 | } |
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128 | |
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129 | //////////////////////////////////////////////////////////////////////////// |
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130 | // |
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131 | // Calculate extent under transform and specified limit |
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132 | |
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133 | G4bool G4Orb::CalculateExtent( const EAxis pAxis, |
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134 | const G4VoxelLimits& pVoxelLimit, |
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135 | const G4AffineTransform& pTransform, |
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136 | G4double& pMin, G4double& pMax ) const |
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137 | { |
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138 | // Compute x/y/z mins and maxs for bounding box respecting limits, |
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139 | // with early returns if outside limits. Then switch() on pAxis, |
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140 | // and compute exact x and y limit for x/y case |
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141 | |
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142 | G4double xoffset,xMin,xMax; |
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143 | G4double yoffset,yMin,yMax; |
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144 | G4double zoffset,zMin,zMax; |
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145 | |
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146 | G4double diff1,diff2,maxDiff,newMin,newMax; |
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147 | G4double xoff1,xoff2,yoff1,yoff2; |
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148 | |
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149 | xoffset=pTransform.NetTranslation().x(); |
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150 | xMin=xoffset-fRmax; |
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151 | xMax=xoffset+fRmax; |
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152 | |
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153 | if (pVoxelLimit.IsXLimited()) |
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154 | { |
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155 | if ( (xMin>pVoxelLimit.GetMaxXExtent()+kCarTolerance) |
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156 | || (xMax<pVoxelLimit.GetMinXExtent()-kCarTolerance) ) |
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157 | { |
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158 | return false; |
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159 | } |
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160 | else |
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161 | { |
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162 | if (xMin<pVoxelLimit.GetMinXExtent()) |
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163 | { |
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164 | xMin=pVoxelLimit.GetMinXExtent(); |
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165 | } |
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166 | if (xMax>pVoxelLimit.GetMaxXExtent()) |
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167 | { |
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168 | xMax=pVoxelLimit.GetMaxXExtent(); |
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169 | } |
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170 | } |
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171 | } |
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172 | yoffset=pTransform.NetTranslation().y(); |
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173 | yMin=yoffset-fRmax; |
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174 | yMax=yoffset+fRmax; |
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175 | |
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176 | if (pVoxelLimit.IsYLimited()) |
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177 | { |
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178 | if ( (yMin>pVoxelLimit.GetMaxYExtent()+kCarTolerance) |
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179 | || (yMax<pVoxelLimit.GetMinYExtent()-kCarTolerance) ) |
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180 | { |
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181 | return false; |
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182 | } |
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183 | else |
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184 | { |
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185 | if (yMin<pVoxelLimit.GetMinYExtent()) |
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186 | { |
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187 | yMin=pVoxelLimit.GetMinYExtent(); |
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188 | } |
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189 | if (yMax>pVoxelLimit.GetMaxYExtent()) |
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190 | { |
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191 | yMax=pVoxelLimit.GetMaxYExtent(); |
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192 | } |
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193 | } |
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194 | } |
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195 | zoffset=pTransform.NetTranslation().z(); |
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196 | zMin=zoffset-fRmax; |
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197 | zMax=zoffset+fRmax; |
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198 | |
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199 | if (pVoxelLimit.IsZLimited()) |
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200 | { |
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201 | if ( (zMin>pVoxelLimit.GetMaxZExtent()+kCarTolerance) |
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202 | || (zMax<pVoxelLimit.GetMinZExtent()-kCarTolerance) ) |
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203 | { |
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204 | return false; |
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205 | } |
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206 | else |
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207 | { |
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208 | if (zMin<pVoxelLimit.GetMinZExtent()) |
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209 | { |
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210 | zMin=pVoxelLimit.GetMinZExtent(); |
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211 | } |
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212 | if (zMax>pVoxelLimit.GetMaxZExtent()) |
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213 | { |
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214 | zMax=pVoxelLimit.GetMaxZExtent(); |
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215 | } |
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216 | } |
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217 | } |
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218 | |
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219 | // Known to cut sphere |
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220 | |
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221 | switch (pAxis) |
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222 | { |
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223 | case kXAxis: |
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224 | yoff1=yoffset-yMin; |
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225 | yoff2=yMax-yoffset; |
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226 | |
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227 | if ( yoff1 >= 0 && yoff2 >= 0 ) |
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228 | { |
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229 | // Y limits cross max/min x => no change |
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230 | // |
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231 | pMin=xMin; |
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232 | pMax=xMax; |
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233 | } |
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234 | else |
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235 | { |
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236 | // Y limits don't cross max/min x => compute max delta x, |
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237 | // hence new mins/maxs |
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238 | // |
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239 | diff1=std::sqrt(fRmax*fRmax-yoff1*yoff1); |
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240 | diff2=std::sqrt(fRmax*fRmax-yoff2*yoff2); |
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241 | maxDiff=(diff1>diff2) ? diff1:diff2; |
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242 | newMin=xoffset-maxDiff; |
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243 | newMax=xoffset+maxDiff; |
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244 | pMin=(newMin<xMin) ? xMin : newMin; |
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245 | pMax=(newMax>xMax) ? xMax : newMax; |
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246 | } |
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247 | break; |
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248 | case kYAxis: |
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249 | xoff1=xoffset-xMin; |
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250 | xoff2=xMax-xoffset; |
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251 | if (xoff1>=0&&xoff2>=0) |
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252 | { |
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253 | // X limits cross max/min y => no change |
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254 | // |
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255 | pMin=yMin; |
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256 | pMax=yMax; |
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257 | } |
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258 | else |
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259 | { |
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260 | // X limits don't cross max/min y => compute max delta y, |
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261 | // hence new mins/maxs |
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262 | // |
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263 | diff1=std::sqrt(fRmax*fRmax-xoff1*xoff1); |
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264 | diff2=std::sqrt(fRmax*fRmax-xoff2*xoff2); |
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265 | maxDiff=(diff1>diff2) ? diff1:diff2; |
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266 | newMin=yoffset-maxDiff; |
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267 | newMax=yoffset+maxDiff; |
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268 | pMin=(newMin<yMin) ? yMin : newMin; |
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269 | pMax=(newMax>yMax) ? yMax : newMax; |
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270 | } |
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271 | break; |
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272 | case kZAxis: |
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273 | pMin=zMin; |
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274 | pMax=zMax; |
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275 | break; |
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276 | default: |
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277 | break; |
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278 | } |
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279 | pMin -= fRmaxTolerance; |
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280 | pMax += fRmaxTolerance; |
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281 | |
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282 | return true; |
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283 | |
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284 | } |
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285 | |
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286 | /////////////////////////////////////////////////////////////////////////// |
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287 | // |
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288 | // Return whether point inside/outside/on surface |
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289 | // Split into radius checks |
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290 | // |
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291 | |
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292 | EInside G4Orb::Inside( const G4ThreeVector& p ) const |
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293 | { |
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294 | G4double rad2,tolRMax; |
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295 | EInside in; |
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296 | |
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297 | |
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298 | rad2 = p.x()*p.x()+p.y()*p.y()+p.z()*p.z(); |
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299 | |
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300 | G4double rad = std::sqrt(rad2); |
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301 | |
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302 | // G4double rad = std::sqrt(rad2); |
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303 | // Check radial surface |
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304 | // sets `in' |
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305 | |
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306 | tolRMax = fRmax - fRmaxTolerance*0.5; |
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307 | |
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308 | if ( rad <= tolRMax ) { in = kInside; } |
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309 | else |
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310 | { |
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311 | tolRMax = fRmax + fRmaxTolerance*0.5; |
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312 | if ( rad <= tolRMax ) { in = kSurface; } |
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313 | else { in = kOutside; } |
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314 | } |
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315 | return in; |
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316 | } |
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317 | |
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318 | ///////////////////////////////////////////////////////////////////// |
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319 | // |
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320 | // Return unit normal of surface closest to p |
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321 | // - note if point on z axis, ignore phi divided sides |
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322 | // - unsafe if point close to z axis a rmin=0 - no explicit checks |
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323 | |
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324 | G4ThreeVector G4Orb::SurfaceNormal( const G4ThreeVector& p ) const |
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325 | { |
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326 | ENorm side = kNRMax; |
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327 | G4ThreeVector norm; |
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328 | G4double rad = std::sqrt(p.x()*p.x()+p.y()*p.y()+p.z()*p.z()); |
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329 | |
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330 | switch (side) |
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331 | { |
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332 | case kNRMax: |
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333 | norm = G4ThreeVector(p.x()/rad,p.y()/rad,p.z()/rad); |
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334 | break; |
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335 | default: |
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336 | DumpInfo(); |
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337 | #ifdef G4CSGDEBUG |
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338 | G4Exception("G4Orb::SurfaceNormal()", "Notification", JustWarning, |
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339 | "Undefined side for valid surface normal to solid."); |
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340 | #endif |
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341 | break; |
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342 | } |
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343 | |
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344 | return norm; |
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345 | } |
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346 | |
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347 | /////////////////////////////////////////////////////////////////////////////// |
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348 | // |
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349 | // Calculate distance to shape from outside, along normalised vector |
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350 | // - return kInfinity if no intersection, or intersection distance <= tolerance |
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351 | // |
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352 | // -> If point is outside outer radius, compute intersection with rmax |
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353 | // - if no intersection return |
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354 | // - if valid phi,theta return intersection Dist |
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355 | |
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356 | G4double G4Orb::DistanceToIn( const G4ThreeVector& p, |
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357 | const G4ThreeVector& v ) const |
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358 | { |
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359 | G4double snxt = kInfinity; // snxt = default return value |
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360 | |
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361 | G4double rad, pDotV3d; // , tolORMax2, tolIRMax2; |
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362 | G4double c, d2, s = kInfinity; |
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363 | |
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364 | const G4double dRmax = 100.*fRmax; |
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365 | |
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366 | // General Precalcs |
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367 | |
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368 | rad = std::sqrt(p.x()*p.x() + p.y()*p.y() + p.z()*p.z()); |
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369 | pDotV3d = p.x()*v.x() + p.y()*v.y() + p.z()*v.z(); |
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370 | |
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371 | // Radial Precalcs |
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372 | |
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373 | // tolORMax2 = (fRmax+fRmaxTolerance*0.5)*(fRmax+fRmaxTolerance*0.5); |
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374 | // tolIRMax2 = (fRmax-fRmaxTolerance*0.5)*(fRmax-fRmaxTolerance*0.5); |
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375 | |
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376 | // Outer spherical shell intersection |
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377 | // - Only if outside tolerant fRmax |
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378 | // - Check for if inside and outer G4Orb heading through solid (-> 0) |
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379 | // - No intersect -> no intersection with G4Orb |
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380 | // |
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381 | // Shell eqn: x^2+y^2+z^2 = RSPH^2 |
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382 | // |
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383 | // => (px+svx)^2+(py+svy)^2+(pz+svz)^2=R^2 |
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384 | // |
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385 | // => (px^2+py^2+pz^2) +2s(pxvx+pyvy+pzvz)+s^2(vx^2+vy^2+vz^2)=R^2 |
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386 | // => rad2 +2s(pDotV3d) +s^2 =R^2 |
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387 | // |
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388 | // => s=-pDotV3d+-std::sqrt(pDotV3d^2-(rad2-R^2)) |
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389 | |
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390 | c = (rad - fRmax)*(rad + fRmax); |
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391 | |
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392 | if( rad > fRmax-fRmaxTolerance*0.5 ) // not inside in terms of Inside(p) |
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393 | { |
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394 | if ( c > fRmaxTolerance*fRmax ) |
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395 | { |
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396 | // If outside tolerant boundary of outer G4Orb in terms of c |
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397 | // [ should be std::sqrt(rad2) - fRmax > fRmaxTolerance*0.5 ] |
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398 | |
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399 | d2 = pDotV3d*pDotV3d - c; |
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400 | |
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401 | if ( d2 >= 0 ) |
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402 | { |
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403 | s = -pDotV3d - std::sqrt(d2); |
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404 | if ( s >= 0 ) |
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405 | { |
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406 | if ( s > dRmax ) // Avoid rounding errors due to precision issues seen on |
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407 | { // 64 bits systems. Split long distances and recompute |
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408 | G4double fTerm = s - std::fmod(s,dRmax); |
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409 | s = fTerm + DistanceToIn(p+fTerm*v,v); |
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410 | } |
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411 | return snxt = s; |
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412 | } |
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413 | } |
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414 | else // No intersection with G4Orb |
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415 | { |
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416 | return snxt = kInfinity; |
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417 | } |
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418 | } |
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419 | else // not outside in terms of c |
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420 | { |
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421 | if ( c > -fRmaxTolerance*fRmax ) // on surface |
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422 | { |
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423 | d2 = pDotV3d*pDotV3d - c; |
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424 | if ( (d2 < fRmaxTolerance*fRmax) || (pDotV3d >= 0) ) |
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425 | { |
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426 | return snxt = kInfinity; |
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427 | } |
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428 | else |
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429 | { |
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430 | return snxt = 0.; |
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431 | } |
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432 | } |
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433 | } |
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434 | } |
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435 | #ifdef G4CSGDEBUG |
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436 | else // inside ??? |
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437 | { |
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438 | G4Exception("G4Orb::DistanceToIn(p,v)", "Notification", |
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439 | JustWarning, "Point p is inside !?"); |
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440 | } |
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441 | #endif |
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442 | |
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443 | return snxt; |
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444 | } |
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445 | |
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446 | ////////////////////////////////////////////////////////////////////// |
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447 | // |
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448 | // Calculate distance (<= actual) to closest surface of shape from outside |
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449 | // - Calculate distance to radial plane |
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450 | // - Return 0 if point inside |
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451 | |
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452 | G4double G4Orb::DistanceToIn( const G4ThreeVector& p ) const |
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453 | { |
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454 | G4double safe = 0.0, |
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455 | rad = std::sqrt(p.x()*p.x()+p.y()*p.y()+p.z()*p.z()); |
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456 | safe = rad - fRmax; |
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457 | if( safe < 0 ) { safe = 0.; } |
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458 | return safe; |
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459 | } |
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460 | |
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461 | ///////////////////////////////////////////////////////////////////// |
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462 | // |
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463 | // Calculate distance to surface of shape from `inside', allowing for tolerance |
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464 | // |
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465 | |
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466 | G4double G4Orb::DistanceToOut( const G4ThreeVector& p, |
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467 | const G4ThreeVector& v, |
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468 | const G4bool calcNorm, |
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469 | G4bool *validNorm, |
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470 | G4ThreeVector *n ) const |
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471 | { |
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472 | G4double snxt = kInfinity; // ??? snxt is default return value |
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473 | ESide side = kNull; |
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474 | |
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475 | G4double rad2,pDotV3d; |
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476 | G4double xi,yi,zi; // Intersection point |
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477 | G4double c,d2; |
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478 | |
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479 | rad2 = p.x()*p.x() + p.y()*p.y() + p.z()*p.z(); |
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480 | pDotV3d = p.x()*v.x() + p.y()*v.y() + p.z()*v.z(); |
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481 | |
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482 | // Radial Intersection from G4Orb::DistanceToIn |
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483 | // |
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484 | // Outer spherical shell intersection |
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485 | // - Only if outside tolerant fRmax |
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486 | // - Check for if inside and outer G4Orb heading through solid (-> 0) |
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487 | // - No intersect -> no intersection with G4Orb |
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488 | // |
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489 | // Shell eqn: x^2+y^2+z^2=RSPH^2 |
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490 | // |
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491 | // => (px+svx)^2+(py+svy)^2+(pz+svz)^2=R^2 |
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492 | // |
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493 | // => (px^2+py^2+pz^2) +2s(pxvx+pyvy+pzvz)+s^2(vx^2+vy^2+vz^2)=R^2 |
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494 | // => rad2 +2s(pDotV3d) +s^2 =R^2 |
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495 | // |
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496 | // => s=-pDotV3d+-std::sqrt(pDotV3d^2-(rad2-R^2)) |
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497 | |
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498 | const G4double Rmax_plus = fRmax + fRmaxTolerance*0.5; |
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499 | G4double rad = std::sqrt(rad2); |
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500 | |
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501 | if ( rad <= Rmax_plus ) |
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502 | { |
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503 | c = (rad - fRmax)*(rad + fRmax); |
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504 | |
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505 | if ( c < fRmaxTolerance*fRmax ) |
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506 | { |
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507 | // Within tolerant Outer radius |
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508 | // |
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509 | // The test is |
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510 | // rad - fRmax < 0.5*fRmaxTolerance |
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511 | // => rad < fRmax + 0.5*kRadTol |
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512 | // => rad2 < (fRmax + 0.5*kRadTol)^2 |
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513 | // => rad2 < fRmax^2 + 2.*0.5*fRmax*kRadTol + 0.25*kRadTol*kRadTol |
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514 | // => rad2 - fRmax^2 <~ fRmax*kRadTol |
---|
515 | |
---|
516 | d2 = pDotV3d*pDotV3d - c; |
---|
517 | |
---|
518 | if( ( c > -fRmaxTolerance*fRmax) && // on tolerant surface |
---|
519 | ( ( pDotV3d >= 0 ) || ( d2 < 0 )) ) // leaving outside from Rmax |
---|
520 | // not re-entering |
---|
521 | { |
---|
522 | if(calcNorm) |
---|
523 | { |
---|
524 | *validNorm = true; |
---|
525 | *n = G4ThreeVector(p.x()/fRmax,p.y()/fRmax,p.z()/fRmax); |
---|
526 | } |
---|
527 | return snxt = 0; |
---|
528 | } |
---|
529 | else |
---|
530 | { |
---|
531 | snxt = -pDotV3d + std::sqrt(d2); // second root since inside Rmax |
---|
532 | side = kRMax; |
---|
533 | } |
---|
534 | } |
---|
535 | } |
---|
536 | else // p is outside ??? |
---|
537 | { |
---|
538 | G4cout.precision(16); |
---|
539 | G4cout << G4endl; |
---|
540 | DumpInfo(); |
---|
541 | G4cout << "Position:" << G4endl << G4endl; |
---|
542 | G4cout << "p.x() = " << p.x()/mm << " mm" << G4endl; |
---|
543 | G4cout << "p.y() = " << p.y()/mm << " mm" << G4endl; |
---|
544 | G4cout << "p.z() = " << p.z()/mm << " mm" << G4endl << G4endl; |
---|
545 | G4cout << "Rp = "<< std::sqrt( p.x()*p.x()+p.y()*p.y()+p.z()*p.z() )/mm << " mm" |
---|
546 | << G4endl << G4endl; |
---|
547 | G4cout << "Direction:" << G4endl << G4endl; |
---|
548 | G4cout << "v.x() = " << v.x() << G4endl; |
---|
549 | G4cout << "v.y() = " << v.y() << G4endl; |
---|
550 | G4cout << "v.z() = " << v.z() << G4endl << G4endl; |
---|
551 | G4cout << "Proposed distance :" << G4endl << G4endl; |
---|
552 | G4cout << "snxt = " << snxt/mm << " mm" << G4endl << G4endl; |
---|
553 | G4Exception("G4Orb::DistanceToOut(p,v,..)", "Notification", |
---|
554 | JustWarning, "Logic error: snxt = kInfinity ???"); |
---|
555 | } |
---|
556 | if (calcNorm) // Output switch operator |
---|
557 | { |
---|
558 | switch( side ) |
---|
559 | { |
---|
560 | case kRMax: |
---|
561 | xi=p.x()+snxt*v.x(); |
---|
562 | yi=p.y()+snxt*v.y(); |
---|
563 | zi=p.z()+snxt*v.z(); |
---|
564 | *n=G4ThreeVector(xi/fRmax,yi/fRmax,zi/fRmax); |
---|
565 | *validNorm=true; |
---|
566 | break; |
---|
567 | default: |
---|
568 | G4cout.precision(16); |
---|
569 | G4cout << G4endl; |
---|
570 | DumpInfo(); |
---|
571 | G4cout << "Position:" << G4endl << G4endl; |
---|
572 | G4cout << "p.x() = " << p.x()/mm << " mm" << G4endl; |
---|
573 | G4cout << "p.y() = " << p.y()/mm << " mm" << G4endl; |
---|
574 | G4cout << "p.z() = " << p.z()/mm << " mm" << G4endl << G4endl; |
---|
575 | G4cout << "Direction:" << G4endl << G4endl; |
---|
576 | G4cout << "v.x() = " << v.x() << G4endl; |
---|
577 | G4cout << "v.y() = " << v.y() << G4endl; |
---|
578 | G4cout << "v.z() = " << v.z() << G4endl << G4endl; |
---|
579 | G4cout << "Proposed distance :" << G4endl << G4endl; |
---|
580 | G4cout << "snxt = " << snxt/mm << " mm" << G4endl << G4endl; |
---|
581 | G4Exception("G4Orb::DistanceToOut(p,v,..)","Notification",JustWarning, |
---|
582 | "Undefined side for valid surface normal to solid."); |
---|
583 | break; |
---|
584 | } |
---|
585 | } |
---|
586 | return snxt; |
---|
587 | } |
---|
588 | |
---|
589 | ///////////////////////////////////////////////////////////////////////// |
---|
590 | // |
---|
591 | // Calculate distance (<=actual) to closest surface of shape from inside |
---|
592 | |
---|
593 | G4double G4Orb::DistanceToOut( const G4ThreeVector& p ) const |
---|
594 | { |
---|
595 | G4double safe=0.0,rad = std::sqrt(p.x()*p.x()+p.y()*p.y()+p.z()*p.z()); |
---|
596 | |
---|
597 | #ifdef G4CSGDEBUG |
---|
598 | if( Inside(p) == kOutside ) |
---|
599 | { |
---|
600 | G4cout.precision(16); |
---|
601 | G4cout << G4endl; |
---|
602 | DumpInfo(); |
---|
603 | G4cout << "Position:" << G4endl << G4endl; |
---|
604 | G4cout << "p.x() = " << p.x()/mm << " mm" << G4endl; |
---|
605 | G4cout << "p.y() = " << p.y()/mm << " mm" << G4endl; |
---|
606 | G4cout << "p.z() = " << p.z()/mm << " mm" << G4endl << G4endl; |
---|
607 | G4Exception("G4Orb::DistanceToOut(p)", "Notification", JustWarning, |
---|
608 | "Point p is outside !?" ); |
---|
609 | } |
---|
610 | #endif |
---|
611 | |
---|
612 | safe = fRmax - rad; |
---|
613 | if ( safe < 0. ) safe = 0.; |
---|
614 | return safe; |
---|
615 | } |
---|
616 | |
---|
617 | ////////////////////////////////////////////////////////////////////////// |
---|
618 | // |
---|
619 | // G4EntityType |
---|
620 | |
---|
621 | G4GeometryType G4Orb::GetEntityType() const |
---|
622 | { |
---|
623 | return G4String("G4Orb"); |
---|
624 | } |
---|
625 | |
---|
626 | ////////////////////////////////////////////////////////////////////////// |
---|
627 | // |
---|
628 | // Stream object contents to an output stream |
---|
629 | |
---|
630 | std::ostream& G4Orb::StreamInfo( std::ostream& os ) const |
---|
631 | { |
---|
632 | os << "-----------------------------------------------------------\n" |
---|
633 | << " *** Dump for solid - " << GetName() << " ***\n" |
---|
634 | << " ===================================================\n" |
---|
635 | << " Solid type: G4Orb\n" |
---|
636 | << " Parameters: \n" |
---|
637 | |
---|
638 | << " outer radius: " << fRmax/mm << " mm \n" |
---|
639 | << "-----------------------------------------------------------\n"; |
---|
640 | |
---|
641 | return os; |
---|
642 | } |
---|
643 | |
---|
644 | ///////////////////////////////////////////////////////////////////////// |
---|
645 | // |
---|
646 | // GetPointOnSurface |
---|
647 | |
---|
648 | G4ThreeVector G4Orb::GetPointOnSurface() const |
---|
649 | { |
---|
650 | // generate a random number from zero to 2pi... |
---|
651 | // |
---|
652 | G4double phi = RandFlat::shoot(0.,2.*pi); |
---|
653 | G4double cosphi = std::cos(phi); |
---|
654 | G4double sinphi = std::sin(phi); |
---|
655 | |
---|
656 | G4double theta = RandFlat::shoot(0.,pi); |
---|
657 | G4double costheta = std::cos(theta); |
---|
658 | G4double sintheta = std::sqrt(1.-sqr(costheta)); |
---|
659 | |
---|
660 | return G4ThreeVector (fRmax*sintheta*cosphi, |
---|
661 | fRmax*sintheta*sinphi, fRmax*costheta); |
---|
662 | } |
---|
663 | |
---|
664 | //////////////////////////////////////////////////////////////////////// |
---|
665 | // |
---|
666 | // Methods for visualisation |
---|
667 | |
---|
668 | void G4Orb::DescribeYourselfTo ( G4VGraphicsScene& scene ) const |
---|
669 | { |
---|
670 | scene.AddSolid (*this); |
---|
671 | } |
---|
672 | |
---|
673 | G4Polyhedron* G4Orb::CreatePolyhedron () const |
---|
674 | { |
---|
675 | return new G4PolyhedronSphere (0., fRmax, 0., 2*pi, 0., pi); |
---|
676 | } |
---|
677 | |
---|
678 | G4NURBS* G4Orb::CreateNURBS () const |
---|
679 | { |
---|
680 | return new G4NURBSbox (fRmax, fRmax, fRmax); // Box for now!!! |
---|
681 | } |
---|