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: G4VTwistedFaceted.cc,v 1.18 2007/05/25 09:42:34 gcosmo Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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28 | // |
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29 | // |
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30 | // -------------------------------------------------------------------- |
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31 | // GEANT 4 class source file |
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32 | // |
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33 | // |
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34 | // G4VTwistedFaceted.cc |
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35 | // |
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36 | // Author: |
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37 | // |
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38 | // 04-Nov-2004 - O.Link (Oliver.Link@cern.ch) |
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39 | // |
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40 | // -------------------------------------------------------------------- |
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41 | |
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42 | #include "G4VTwistedFaceted.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 "G4SolidExtentList.hh" |
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47 | #include "G4ClippablePolygon.hh" |
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48 | #include "G4VPVParameterisation.hh" |
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49 | #include "G4GeometryTolerance.hh" |
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50 | #include "meshdefs.hh" |
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51 | |
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52 | #include "G4VGraphicsScene.hh" |
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53 | #include "G4Polyhedron.hh" |
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54 | #include "G4VisExtent.hh" |
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55 | #include "G4NURBS.hh" |
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56 | #include "G4NURBStube.hh" |
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57 | #include "G4NURBScylinder.hh" |
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58 | #include "G4NURBStubesector.hh" |
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59 | |
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60 | #include "Randomize.hh" |
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61 | |
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62 | //===================================================================== |
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63 | //* constructors ------------------------------------------------------ |
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64 | |
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65 | G4VTwistedFaceted:: |
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66 | G4VTwistedFaceted( const G4String &pname, // Name of instance |
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67 | G4double PhiTwist, // twist angle |
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68 | G4double pDz, // half z length |
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69 | G4double pTheta, // direction between end planes |
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70 | G4double pPhi, // defined by polar and azim. angles |
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71 | G4double pDy1, // half y length at -pDz |
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72 | G4double pDx1, // half x length at -pDz,-pDy |
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73 | G4double pDx2, // half x length at -pDz,+pDy |
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74 | G4double pDy2, // half y length at +pDz |
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75 | G4double pDx3, // half x length at +pDz,-pDy |
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76 | G4double pDx4, // half x length at +pDz,+pDy |
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77 | G4double pAlph // tilt angle |
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78 | ) |
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79 | : G4VSolid(pname), |
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80 | fLowerEndcap(0), fUpperEndcap(0), fSide0(0), |
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81 | fSide90(0), fSide180(0), fSide270(0), |
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82 | fSurfaceArea(0.), fpPolyhedron(0) |
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83 | { |
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84 | |
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85 | G4double pDytmp ; |
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86 | G4double fDxUp ; |
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87 | G4double fDxDown ; |
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88 | |
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89 | fDx1 = pDx1 ; |
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90 | fDx2 = pDx2 ; |
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91 | fDx3 = pDx3 ; |
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92 | fDx4 = pDx4 ; |
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93 | fDy1 = pDy1 ; |
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94 | fDy2 = pDy2 ; |
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95 | fDz = pDz ; |
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96 | |
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97 | G4double kAngTolerance |
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98 | = G4GeometryTolerance::GetInstance()->GetAngularTolerance(); |
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99 | |
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100 | // maximum values |
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101 | // |
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102 | fDxDown = ( fDx1 > fDx2 ? fDx1 : fDx2 ) ; |
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103 | fDxUp = ( fDx3 > fDx4 ? fDx3 : fDx4 ) ; |
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104 | fDx = ( fDxUp > fDxDown ? fDxUp : fDxDown ) ; |
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105 | fDy = ( fDy1 > fDy2 ? fDy1 : fDy2 ) ; |
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106 | |
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107 | // planarity check |
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108 | // |
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109 | if ( fDx1 != fDx2 && fDx3 != fDx4 ) |
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110 | { |
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111 | pDytmp = fDy1 * ( fDx3 - fDx4 ) / ( fDx1 - fDx2 ) ; |
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112 | if ( std::fabs(pDytmp - fDy2) > kCarTolerance ) |
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113 | { |
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114 | G4cerr << "ERROR - G4VTwistedFaceted::G4VTwistedFaceted(): " |
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115 | << GetName() << G4endl |
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116 | << " Not planar ! - " << G4endl |
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117 | << "fDy2 is " << fDy2 << " but should be " |
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118 | << pDytmp << "." << G4endl ; |
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119 | G4Exception("G4VTwistedFaceted::G4VTwistedFaceted()", "InvalidSetup", |
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120 | FatalException, "Not planar surface in untwisted Trapezoid."); |
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121 | } |
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122 | } |
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123 | |
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124 | #ifdef G4TWISTDEBUG |
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125 | if ( fDx1 == fDx2 && fDx3 == fDx4 ) |
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126 | { |
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127 | G4cout << "Trapezoid is a box" << G4endl ; |
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128 | } |
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129 | |
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130 | #endif |
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131 | |
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132 | if ( ( fDx1 == fDx2 && fDx3 != fDx4 ) || ( fDx1 != fDx2 && fDx3 == fDx4 ) ) |
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133 | { |
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134 | G4cerr << "ERROR - G4VTwistedFaceted::G4VTwistedFaceted(): " |
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135 | << GetName() << G4endl |
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136 | << " Not planar ! - " << G4endl |
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137 | << "One endcap is rectengular, the other is a trapezoid." << G4endl |
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138 | << "For planarity reasons they have to be rectangles or trapezoids " |
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139 | << G4endl |
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140 | << "on both sides." |
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141 | << G4endl ; |
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142 | G4Exception("G4VTwistedFaceted::G4VTwistedFaceted()", "InvalidSetup", |
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143 | FatalException, "Not planar surface in untwisted Trapezoid."); |
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144 | } |
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145 | |
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146 | // twist angle |
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147 | // |
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148 | fPhiTwist = PhiTwist ; |
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149 | |
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150 | // tilt angle |
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151 | // |
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152 | fAlph = pAlph ; |
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153 | fTAlph = std::tan(fAlph) ; |
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154 | |
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155 | fTheta = pTheta ; |
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156 | fPhi = pPhi ; |
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157 | |
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158 | // dx in surface equation |
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159 | // |
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160 | fdeltaX = 2 * fDz * std::tan(fTheta) * std::cos(fPhi) ; |
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161 | |
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162 | // dy in surface equation |
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163 | // |
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164 | fdeltaY = 2 * fDz * std::tan(fTheta) * std::sin(fPhi) ; |
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165 | |
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166 | if ( ! ( ( fDx1 > 2*kCarTolerance) |
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167 | && ( fDx2 > 2*kCarTolerance) |
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168 | && ( fDx3 > 2*kCarTolerance) |
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169 | && ( fDx4 > 2*kCarTolerance) |
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170 | && ( fDy1 > 2*kCarTolerance) |
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171 | && ( fDy2 > 2*kCarTolerance) |
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172 | && ( fDz > 2*kCarTolerance) |
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173 | && ( std::fabs(fPhiTwist) > 2*kAngTolerance ) |
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174 | && ( std::fabs(fPhiTwist) < pi/2 ) |
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175 | && ( std::fabs(fAlph) < pi/2 ) |
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176 | && ( fTheta < pi/2 && fTheta >= 0 ) ) |
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177 | ) |
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178 | { |
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179 | G4cerr << "ERROR - G4VTwistedFaceted()::G4VTwistedFaceted(): " |
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180 | << GetName() << G4endl |
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181 | << " Dimensions too small or too big! - " << G4endl |
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182 | << "fDx 1-4 = " << fDx1/cm << ", " << fDx2/cm << ", " |
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183 | << fDx3/cm << ", " << fDx4/cm << " cm" << G4endl |
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184 | << "fDy 1-2 = " << fDy1/cm << ", " << fDy2/cm << ", " |
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185 | << " cm" << G4endl |
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186 | << "fDz = " << fDz/cm << " cm" << G4endl |
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187 | << " twistangle " << fPhiTwist/deg << " deg" << G4endl |
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188 | << " phi,theta = " << fPhi/deg << ", " << fTheta/deg |
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189 | << " deg" << G4endl ; |
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190 | G4Exception("G4TwistedTrap::G4VTwistedFaceted()", |
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191 | "InvalidSetup", FatalException, |
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192 | "Invalid dimensions. Too small, or twist angle too big."); |
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193 | } |
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194 | CreateSurfaces(); |
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195 | fCubicVolume = 2 * fDz * ( ( fDx1 + fDx2 ) * fDy1 + ( fDx3 + fDx4 ) * fDy2 ); |
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196 | } |
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197 | |
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198 | |
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199 | //===================================================================== |
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200 | //* Fake default constructor ------------------------------------------ |
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201 | |
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202 | G4VTwistedFaceted::G4VTwistedFaceted( __void__& a ) |
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203 | : G4VSolid(a), |
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204 | fLowerEndcap(0), fUpperEndcap(0), fSide0(0), |
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205 | fSide90(0), fSide180(0), fSide270(0), |
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206 | fCubicVolume(0.), fSurfaceArea(0.), fpPolyhedron(0) |
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207 | { |
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208 | } |
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209 | |
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210 | //===================================================================== |
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211 | //* destructor -------------------------------------------------------- |
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212 | |
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213 | G4VTwistedFaceted::~G4VTwistedFaceted() |
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214 | { |
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215 | if (fLowerEndcap) delete fLowerEndcap ; |
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216 | if (fUpperEndcap) delete fUpperEndcap ; |
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217 | |
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218 | if (fSide0) delete fSide0 ; |
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219 | if (fSide90) delete fSide90 ; |
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220 | if (fSide180) delete fSide180 ; |
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221 | if (fSide270) delete fSide270 ; |
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222 | if (fpPolyhedron) delete fpPolyhedron; |
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223 | } |
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224 | |
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225 | //===================================================================== |
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226 | //* ComputeDimensions ------------------------------------------------- |
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227 | |
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228 | void G4VTwistedFaceted::ComputeDimensions(G4VPVParameterisation* , |
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229 | const G4int , |
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230 | const G4VPhysicalVolume* ) |
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231 | { |
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232 | G4Exception("G4VTwistedFaceted::ComputeDimensions()", |
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233 | "NotSupported", FatalException, |
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234 | "G4VTwistedFaceted does not support Parameterisation."); |
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235 | } |
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236 | |
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237 | //===================================================================== |
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238 | //* CalculateExtent --------------------------------------------------- |
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239 | |
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240 | G4bool |
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241 | G4VTwistedFaceted::CalculateExtent( const EAxis pAxis, |
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242 | const G4VoxelLimits &pVoxelLimit, |
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243 | const G4AffineTransform &pTransform, |
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244 | G4double &pMin, |
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245 | G4double &pMax ) const |
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246 | { |
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247 | G4double maxRad = std::sqrt( fDx*fDx + fDy*fDy); |
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248 | |
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249 | if (!pTransform.IsRotated()) |
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250 | { |
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251 | // Special case handling for unrotated boxes |
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252 | // Compute x/y/z mins and maxs respecting limits, with early returns |
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253 | // if outside limits. Then switch() on pAxis |
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254 | |
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255 | G4double xoffset,xMin,xMax; |
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256 | G4double yoffset,yMin,yMax; |
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257 | G4double zoffset,zMin,zMax; |
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258 | |
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259 | xoffset = pTransform.NetTranslation().x() ; |
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260 | xMin = xoffset - maxRad ; |
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261 | xMax = xoffset + maxRad ; |
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262 | |
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263 | if (pVoxelLimit.IsXLimited()) |
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264 | { |
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265 | if ( xMin > pVoxelLimit.GetMaxXExtent()+kCarTolerance || |
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266 | xMax < pVoxelLimit.GetMinXExtent()-kCarTolerance ) return false; |
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267 | else |
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268 | { |
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269 | if (xMin < pVoxelLimit.GetMinXExtent()) |
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270 | { |
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271 | xMin = pVoxelLimit.GetMinXExtent() ; |
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272 | } |
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273 | if (xMax > pVoxelLimit.GetMaxXExtent()) |
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274 | { |
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275 | xMax = pVoxelLimit.GetMaxXExtent() ; |
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276 | } |
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277 | } |
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278 | } |
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279 | yoffset = pTransform.NetTranslation().y() ; |
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280 | yMin = yoffset - maxRad ; |
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281 | yMax = yoffset + maxRad ; |
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282 | |
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283 | if (pVoxelLimit.IsYLimited()) |
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284 | { |
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285 | if ( yMin > pVoxelLimit.GetMaxYExtent()+kCarTolerance || |
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286 | yMax < pVoxelLimit.GetMinYExtent()-kCarTolerance ) return false; |
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287 | else |
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288 | { |
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289 | if (yMin < pVoxelLimit.GetMinYExtent()) |
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290 | { |
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291 | yMin = pVoxelLimit.GetMinYExtent() ; |
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292 | } |
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293 | if (yMax > pVoxelLimit.GetMaxYExtent()) |
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294 | { |
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295 | yMax = pVoxelLimit.GetMaxYExtent() ; |
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296 | } |
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297 | } |
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298 | } |
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299 | zoffset = pTransform.NetTranslation().z() ; |
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300 | zMin = zoffset - fDz ; |
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301 | zMax = zoffset + fDz ; |
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302 | |
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303 | if (pVoxelLimit.IsZLimited()) |
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304 | { |
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305 | if ( zMin > pVoxelLimit.GetMaxZExtent()+kCarTolerance || |
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306 | zMax < pVoxelLimit.GetMinZExtent()-kCarTolerance ) return false; |
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307 | else |
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308 | { |
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309 | if (zMin < pVoxelLimit.GetMinZExtent()) |
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310 | { |
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311 | zMin = pVoxelLimit.GetMinZExtent() ; |
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312 | } |
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313 | if (zMax > pVoxelLimit.GetMaxZExtent()) |
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314 | { |
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315 | zMax = pVoxelLimit.GetMaxZExtent() ; |
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316 | } |
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317 | } |
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318 | } |
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319 | switch (pAxis) |
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320 | { |
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321 | case kXAxis: |
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322 | pMin = xMin ; |
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323 | pMax = xMax ; |
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324 | break ; |
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325 | case kYAxis: |
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326 | pMin=yMin; |
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327 | pMax=yMax; |
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328 | break; |
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329 | case kZAxis: |
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330 | pMin=zMin; |
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331 | pMax=zMax; |
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332 | break; |
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333 | default: |
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334 | break; |
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335 | } |
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336 | pMin -= kCarTolerance ; |
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337 | pMax += kCarTolerance ; |
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338 | |
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339 | return true; |
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340 | } |
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341 | else // General rotated case - create and clip mesh to boundaries |
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342 | { |
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343 | G4bool existsAfterClip = false ; |
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344 | G4ThreeVectorList* vertices ; |
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345 | |
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346 | pMin = +kInfinity ; |
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347 | pMax = -kInfinity ; |
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348 | |
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349 | // Calculate rotated vertex coordinates |
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350 | |
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351 | vertices = CreateRotatedVertices(pTransform) ; |
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352 | ClipCrossSection(vertices,0,pVoxelLimit,pAxis,pMin,pMax) ; |
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353 | ClipCrossSection(vertices,4,pVoxelLimit,pAxis,pMin,pMax) ; |
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354 | ClipBetweenSections(vertices,0,pVoxelLimit,pAxis,pMin,pMax) ; |
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355 | |
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356 | if (pVoxelLimit.IsLimited(pAxis) == false) |
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357 | { |
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358 | if ( pMin != kInfinity || pMax != -kInfinity ) |
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359 | { |
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360 | existsAfterClip = true ; |
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361 | |
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362 | // Add 2*tolerance to avoid precision troubles |
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363 | |
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364 | pMin -= kCarTolerance; |
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365 | pMax += kCarTolerance; |
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366 | } |
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367 | } |
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368 | else |
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369 | { |
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370 | G4ThreeVector clipCentre( |
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371 | ( pVoxelLimit.GetMinXExtent()+pVoxelLimit.GetMaxXExtent())*0.5, |
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372 | ( pVoxelLimit.GetMinYExtent()+pVoxelLimit.GetMaxYExtent())*0.5, |
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373 | ( pVoxelLimit.GetMinZExtent()+pVoxelLimit.GetMaxZExtent())*0.5 ); |
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374 | |
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375 | if ( pMin != kInfinity || pMax != -kInfinity ) |
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376 | { |
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377 | existsAfterClip = true ; |
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378 | |
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379 | // Check to see if endpoints are in the solid |
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380 | |
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381 | clipCentre(pAxis) = pVoxelLimit.GetMinExtent(pAxis); |
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382 | |
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383 | if (Inside(pTransform.Inverse().TransformPoint(clipCentre)) |
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384 | != kOutside) |
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385 | { |
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386 | pMin = pVoxelLimit.GetMinExtent(pAxis); |
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387 | } |
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388 | else |
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389 | { |
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390 | pMin -= kCarTolerance; |
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391 | } |
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392 | clipCentre(pAxis) = pVoxelLimit.GetMaxExtent(pAxis); |
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393 | |
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394 | if (Inside(pTransform.Inverse().TransformPoint(clipCentre)) |
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395 | != kOutside) |
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396 | { |
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397 | pMax = pVoxelLimit.GetMaxExtent(pAxis); |
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398 | } |
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399 | else |
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400 | { |
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401 | pMax += kCarTolerance; |
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402 | } |
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403 | } |
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404 | |
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405 | // Check for case where completely enveloping clipping volume |
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406 | // If point inside then we are confident that the solid completely |
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407 | // envelopes the clipping volume. Hence set min/max extents according |
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408 | // to clipping volume extents along the specified axis. |
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409 | |
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410 | else if (Inside(pTransform.Inverse().TransformPoint(clipCentre)) |
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411 | != kOutside) |
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412 | { |
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413 | existsAfterClip = true ; |
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414 | pMin = pVoxelLimit.GetMinExtent(pAxis) ; |
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415 | pMax = pVoxelLimit.GetMaxExtent(pAxis) ; |
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416 | } |
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417 | } |
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418 | delete vertices; |
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419 | return existsAfterClip; |
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420 | } |
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421 | |
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422 | |
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423 | } |
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424 | |
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425 | G4ThreeVectorList* G4VTwistedFaceted:: |
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426 | CreateRotatedVertices(const G4AffineTransform& pTransform) const |
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427 | { |
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428 | |
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429 | G4ThreeVectorList* vertices = new G4ThreeVectorList(); |
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430 | vertices->reserve(8); |
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431 | |
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432 | if (vertices) |
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433 | { |
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434 | |
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435 | G4double maxRad = std::sqrt( fDx*fDx + fDy*fDy); |
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436 | |
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437 | G4ThreeVector vertex0(-maxRad,-maxRad,-fDz) ; |
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438 | G4ThreeVector vertex1(maxRad,-maxRad,-fDz) ; |
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439 | G4ThreeVector vertex2(maxRad,maxRad,-fDz) ; |
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440 | G4ThreeVector vertex3(-maxRad,maxRad,-fDz) ; |
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441 | G4ThreeVector vertex4(-maxRad,-maxRad,fDz) ; |
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442 | G4ThreeVector vertex5(maxRad,-maxRad,fDz) ; |
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443 | G4ThreeVector vertex6(maxRad,maxRad,fDz) ; |
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444 | G4ThreeVector vertex7(-maxRad,maxRad,fDz) ; |
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445 | |
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446 | vertices->push_back(pTransform.TransformPoint(vertex0)); |
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447 | vertices->push_back(pTransform.TransformPoint(vertex1)); |
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448 | vertices->push_back(pTransform.TransformPoint(vertex2)); |
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449 | vertices->push_back(pTransform.TransformPoint(vertex3)); |
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450 | vertices->push_back(pTransform.TransformPoint(vertex4)); |
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451 | vertices->push_back(pTransform.TransformPoint(vertex5)); |
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452 | vertices->push_back(pTransform.TransformPoint(vertex6)); |
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453 | vertices->push_back(pTransform.TransformPoint(vertex7)); |
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454 | } |
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455 | else |
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456 | { |
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457 | DumpInfo(); |
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458 | G4Exception("G4VTwistedFaceted::CreateRotatedVertices()", |
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459 | "FatalError", FatalException, |
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460 | "Error in allocation of vertices. Out of memory !"); |
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461 | } |
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462 | return vertices; |
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463 | } |
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464 | |
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465 | //===================================================================== |
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466 | //* Inside ------------------------------------------------------------ |
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467 | |
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468 | EInside G4VTwistedFaceted::Inside(const G4ThreeVector& p) const |
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469 | { |
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470 | |
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471 | G4ThreeVector *tmpp; |
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472 | EInside *tmpin; |
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473 | if (fLastInside.p == p) { |
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474 | return fLastInside.inside; |
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475 | } else { |
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476 | tmpp = const_cast<G4ThreeVector*>(&(fLastInside.p)); |
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477 | tmpin = const_cast<EInside*>(&(fLastInside.inside)); |
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478 | tmpp->set(p.x(), p.y(), p.z()); |
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479 | } |
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480 | |
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481 | *tmpin = kOutside ; |
---|
482 | |
---|
483 | G4double phi = p.z()/(2*fDz) * fPhiTwist ; // rotate the point to z=0 |
---|
484 | G4double cphi = std::cos(-phi) ; |
---|
485 | G4double sphi = std::sin(-phi) ; |
---|
486 | |
---|
487 | G4double px = p.x() + fdeltaX * ( -phi/fPhiTwist) ; // shift |
---|
488 | G4double py = p.y() + fdeltaY * ( -phi/fPhiTwist) ; |
---|
489 | G4double pz = p.z() ; |
---|
490 | |
---|
491 | G4double posx = px * cphi - py * sphi ; // rotation |
---|
492 | G4double posy = px * sphi + py * cphi ; |
---|
493 | G4double posz = pz ; |
---|
494 | |
---|
495 | G4double xMin = Xcoef(posy,phi,fTAlph) - 2*Xcoef(posy,phi,0.) ; |
---|
496 | G4double xMax = Xcoef(posy,phi,fTAlph) ; |
---|
497 | |
---|
498 | G4double yMax = GetValueB(phi)/2. ; // b(phi)/2 is limit |
---|
499 | G4double yMin = -yMax ; |
---|
500 | |
---|
501 | #ifdef G4TWISTDEBUG |
---|
502 | |
---|
503 | G4cout << "inside called: p = " << p << G4endl ; |
---|
504 | G4cout << "fDx1 = " << fDx1 << G4endl ; |
---|
505 | G4cout << "fDx2 = " << fDx2 << G4endl ; |
---|
506 | G4cout << "fDx3 = " << fDx3 << G4endl ; |
---|
507 | G4cout << "fDx4 = " << fDx4 << G4endl ; |
---|
508 | |
---|
509 | G4cout << "fDy1 = " << fDy1 << G4endl ; |
---|
510 | G4cout << "fDy2 = " << fDy2 << G4endl ; |
---|
511 | |
---|
512 | G4cout << "fDz = " << fDz << G4endl ; |
---|
513 | |
---|
514 | G4cout << "Tilt angle alpha = " << fAlph << G4endl ; |
---|
515 | G4cout << "phi,theta = " << fPhi << " , " << fTheta << G4endl ; |
---|
516 | |
---|
517 | G4cout << "Twist angle = " << fPhiTwist << G4endl ; |
---|
518 | |
---|
519 | G4cout << "posx = " << posx << G4endl ; |
---|
520 | G4cout << "posy = " << posy << G4endl ; |
---|
521 | G4cout << "xMin = " << xMin << G4endl ; |
---|
522 | G4cout << "xMax = " << xMax << G4endl ; |
---|
523 | G4cout << "yMin = " << yMin << G4endl ; |
---|
524 | G4cout << "yMax = " << yMax << G4endl ; |
---|
525 | |
---|
526 | #endif |
---|
527 | |
---|
528 | |
---|
529 | if ( posx <= xMax - kCarTolerance*0.5 |
---|
530 | && posx >= xMin + kCarTolerance*0.5 ) |
---|
531 | { |
---|
532 | if ( posy <= yMax - kCarTolerance*0.5 |
---|
533 | && posy >= yMin + kCarTolerance*0.5 ) |
---|
534 | { |
---|
535 | if (std::fabs(posz) <= fDz - kCarTolerance*0.5 ) *tmpin = kInside ; |
---|
536 | else if (std::fabs(posz) <= fDz + kCarTolerance*0.5 ) *tmpin = kSurface ; |
---|
537 | } |
---|
538 | else if ( posy <= yMax + kCarTolerance*0.5 |
---|
539 | && posy >= yMin - kCarTolerance*0.5 ) |
---|
540 | { |
---|
541 | if (std::fabs(posz) <= fDz + kCarTolerance*0.5 ) *tmpin = kSurface ; |
---|
542 | } |
---|
543 | } |
---|
544 | else if ( posx <= xMax + kCarTolerance*0.5 |
---|
545 | && posx >= xMin - kCarTolerance*0.5 ) |
---|
546 | { |
---|
547 | if ( posy <= yMax + kCarTolerance*0.5 |
---|
548 | && posy >= yMin - kCarTolerance*0.5 ) |
---|
549 | { |
---|
550 | if (std::fabs(posz) <= fDz + kCarTolerance*0.5) *tmpin = kSurface ; |
---|
551 | } |
---|
552 | } |
---|
553 | |
---|
554 | #ifdef G4TWISTDEBUG |
---|
555 | G4cout << "inside = " << fLastInside.inside << G4endl ; |
---|
556 | #endif |
---|
557 | |
---|
558 | return fLastInside.inside; |
---|
559 | |
---|
560 | } |
---|
561 | |
---|
562 | //===================================================================== |
---|
563 | //* SurfaceNormal ----------------------------------------------------- |
---|
564 | |
---|
565 | G4ThreeVector G4VTwistedFaceted::SurfaceNormal(const G4ThreeVector& p) const |
---|
566 | { |
---|
567 | // |
---|
568 | // return the normal unit vector to the Hyperbolical Surface at a point |
---|
569 | // p on (or nearly on) the surface |
---|
570 | // |
---|
571 | // Which of the three or four surfaces are we closest to? |
---|
572 | // |
---|
573 | |
---|
574 | if (fLastNormal.p == p) |
---|
575 | { |
---|
576 | return fLastNormal.vec; |
---|
577 | } |
---|
578 | |
---|
579 | G4ThreeVector *tmpp = const_cast<G4ThreeVector*>(&(fLastNormal.p)); |
---|
580 | G4ThreeVector *tmpnormal = const_cast<G4ThreeVector*>(&(fLastNormal.vec)); |
---|
581 | G4VTwistSurface **tmpsurface = const_cast<G4VTwistSurface**>(fLastNormal.surface); |
---|
582 | tmpp->set(p.x(), p.y(), p.z()); |
---|
583 | |
---|
584 | G4double distance = kInfinity; |
---|
585 | |
---|
586 | G4VTwistSurface *surfaces[6]; |
---|
587 | |
---|
588 | surfaces[0] = fSide0 ; |
---|
589 | surfaces[1] = fSide90 ; |
---|
590 | surfaces[2] = fSide180 ; |
---|
591 | surfaces[3] = fSide270 ; |
---|
592 | surfaces[4] = fLowerEndcap; |
---|
593 | surfaces[5] = fUpperEndcap; |
---|
594 | |
---|
595 | G4ThreeVector xx; |
---|
596 | G4ThreeVector bestxx; |
---|
597 | G4int i; |
---|
598 | G4int besti = -1; |
---|
599 | for (i=0; i< 6; i++) |
---|
600 | { |
---|
601 | G4double tmpdistance = surfaces[i]->DistanceTo(p, xx); |
---|
602 | if (tmpdistance < distance) |
---|
603 | { |
---|
604 | distance = tmpdistance; |
---|
605 | bestxx = xx; |
---|
606 | besti = i; |
---|
607 | } |
---|
608 | } |
---|
609 | |
---|
610 | tmpsurface[0] = surfaces[besti]; |
---|
611 | *tmpnormal = tmpsurface[0]->GetNormal(bestxx, true); |
---|
612 | |
---|
613 | return fLastNormal.vec; |
---|
614 | } |
---|
615 | |
---|
616 | //===================================================================== |
---|
617 | //* DistanceToIn (p, v) ----------------------------------------------- |
---|
618 | |
---|
619 | G4double G4VTwistedFaceted::DistanceToIn (const G4ThreeVector& p, |
---|
620 | const G4ThreeVector& v ) const |
---|
621 | { |
---|
622 | |
---|
623 | // DistanceToIn (p, v): |
---|
624 | // Calculate distance to surface of shape from `outside' |
---|
625 | // along with the v, allowing for tolerance. |
---|
626 | // The function returns kInfinity if no intersection or |
---|
627 | // just grazing within tolerance. |
---|
628 | |
---|
629 | // |
---|
630 | // checking last value |
---|
631 | // |
---|
632 | |
---|
633 | G4ThreeVector *tmpp; |
---|
634 | G4ThreeVector *tmpv; |
---|
635 | G4double *tmpdist; |
---|
636 | if (fLastDistanceToInWithV.p == p && fLastDistanceToInWithV.vec == v) |
---|
637 | { |
---|
638 | return fLastDistanceToIn.value; |
---|
639 | } |
---|
640 | else |
---|
641 | { |
---|
642 | tmpp = const_cast<G4ThreeVector*>(&(fLastDistanceToInWithV.p)); |
---|
643 | tmpv = const_cast<G4ThreeVector*>(&(fLastDistanceToInWithV.vec)); |
---|
644 | tmpdist = const_cast<G4double*>(&(fLastDistanceToInWithV.value)); |
---|
645 | tmpp->set(p.x(), p.y(), p.z()); |
---|
646 | tmpv->set(v.x(), v.y(), v.z()); |
---|
647 | } |
---|
648 | |
---|
649 | // |
---|
650 | // Calculate DistanceToIn(p,v) |
---|
651 | // |
---|
652 | |
---|
653 | EInside currentside = Inside(p); |
---|
654 | |
---|
655 | if (currentside == kInside) |
---|
656 | { |
---|
657 | } |
---|
658 | else if (currentside == kSurface) |
---|
659 | { |
---|
660 | // particle is just on a boundary. |
---|
661 | // if the particle is entering to the volume, return 0 |
---|
662 | // |
---|
663 | G4ThreeVector normal = SurfaceNormal(p); |
---|
664 | if (normal*v < 0) |
---|
665 | { |
---|
666 | *tmpdist = 0; |
---|
667 | return fLastDistanceToInWithV.value; |
---|
668 | } |
---|
669 | } |
---|
670 | |
---|
671 | // now, we can take smallest positive distance. |
---|
672 | |
---|
673 | // Initialize |
---|
674 | // |
---|
675 | G4double distance = kInfinity; |
---|
676 | |
---|
677 | // Find intersections and choose nearest one |
---|
678 | // |
---|
679 | G4VTwistSurface *surfaces[6]; |
---|
680 | |
---|
681 | surfaces[0] = fSide0; |
---|
682 | surfaces[1] = fSide90 ; |
---|
683 | surfaces[2] = fSide180 ; |
---|
684 | surfaces[3] = fSide270 ; |
---|
685 | surfaces[4] = fLowerEndcap; |
---|
686 | surfaces[5] = fUpperEndcap; |
---|
687 | |
---|
688 | G4ThreeVector xx; |
---|
689 | G4ThreeVector bestxx; |
---|
690 | G4int i; |
---|
691 | G4int besti = -1; |
---|
692 | for (i=0; i < 6 ; i++) |
---|
693 | //for (i=1; i < 2 ; i++) |
---|
694 | { |
---|
695 | |
---|
696 | #ifdef G4TWISTDEBUG |
---|
697 | G4cout << G4endl << "surface " << i << ": " << G4endl << G4endl ; |
---|
698 | #endif |
---|
699 | G4double tmpdistance = surfaces[i]->DistanceToIn(p, v, xx); |
---|
700 | #ifdef G4TWISTDEBUG |
---|
701 | G4cout << "Solid DistanceToIn : distance = " << tmpdistance << G4endl ; |
---|
702 | G4cout << "intersection point = " << xx << G4endl ; |
---|
703 | #endif |
---|
704 | if (tmpdistance < distance) |
---|
705 | { |
---|
706 | distance = tmpdistance; |
---|
707 | bestxx = xx; |
---|
708 | besti = i; |
---|
709 | } |
---|
710 | } |
---|
711 | |
---|
712 | #ifdef G4TWISTDEBUG |
---|
713 | G4cout << "best distance = " << distance << G4endl ; |
---|
714 | #endif |
---|
715 | |
---|
716 | *tmpdist = distance; |
---|
717 | // timer.Stop(); |
---|
718 | return fLastDistanceToInWithV.value; |
---|
719 | } |
---|
720 | |
---|
721 | |
---|
722 | G4double G4VTwistedFaceted::DistanceToIn (const G4ThreeVector& p) const |
---|
723 | { |
---|
724 | // DistanceToIn(p): |
---|
725 | // Calculate distance to surface of shape from `outside', |
---|
726 | // allowing for tolerance |
---|
727 | // |
---|
728 | |
---|
729 | // |
---|
730 | // checking last value |
---|
731 | // |
---|
732 | |
---|
733 | G4ThreeVector *tmpp; |
---|
734 | G4double *tmpdist; |
---|
735 | if (fLastDistanceToIn.p == p) |
---|
736 | { |
---|
737 | return fLastDistanceToIn.value; |
---|
738 | } |
---|
739 | else |
---|
740 | { |
---|
741 | tmpp = const_cast<G4ThreeVector*>(&(fLastDistanceToIn.p)); |
---|
742 | tmpdist = const_cast<G4double*>(&(fLastDistanceToIn.value)); |
---|
743 | tmpp->set(p.x(), p.y(), p.z()); |
---|
744 | } |
---|
745 | |
---|
746 | // |
---|
747 | // Calculate DistanceToIn(p) |
---|
748 | // |
---|
749 | |
---|
750 | EInside currentside = Inside(p); |
---|
751 | |
---|
752 | switch (currentside) |
---|
753 | { |
---|
754 | case (kInside) : |
---|
755 | { |
---|
756 | } |
---|
757 | |
---|
758 | case (kSurface) : |
---|
759 | { |
---|
760 | *tmpdist = 0.; |
---|
761 | return fLastDistanceToIn.value; |
---|
762 | } |
---|
763 | |
---|
764 | case (kOutside) : |
---|
765 | { |
---|
766 | // Initialize |
---|
767 | // |
---|
768 | G4double distance = kInfinity; |
---|
769 | |
---|
770 | // Find intersections and choose nearest one |
---|
771 | // |
---|
772 | G4VTwistSurface *surfaces[6]; |
---|
773 | |
---|
774 | surfaces[0] = fSide0; |
---|
775 | surfaces[1] = fSide90 ; |
---|
776 | surfaces[2] = fSide180 ; |
---|
777 | surfaces[3] = fSide270 ; |
---|
778 | surfaces[4] = fLowerEndcap; |
---|
779 | surfaces[5] = fUpperEndcap; |
---|
780 | |
---|
781 | G4int i; |
---|
782 | G4int besti = -1; |
---|
783 | G4ThreeVector xx; |
---|
784 | G4ThreeVector bestxx; |
---|
785 | for (i=0; i< 6; i++) |
---|
786 | { |
---|
787 | G4double tmpdistance = surfaces[i]->DistanceTo(p, xx); |
---|
788 | if (tmpdistance < distance) |
---|
789 | { |
---|
790 | distance = tmpdistance; |
---|
791 | bestxx = xx; |
---|
792 | besti = i; |
---|
793 | } |
---|
794 | } |
---|
795 | *tmpdist = distance; |
---|
796 | return fLastDistanceToIn.value; |
---|
797 | } |
---|
798 | |
---|
799 | default : |
---|
800 | { |
---|
801 | G4Exception("G4VTwistedFaceted::DistanceToIn(p)", "InvalidCondition", |
---|
802 | FatalException, "Unknown point location!"); |
---|
803 | } |
---|
804 | } // switch end |
---|
805 | |
---|
806 | return 0; |
---|
807 | } |
---|
808 | |
---|
809 | |
---|
810 | //===================================================================== |
---|
811 | //* DistanceToOut (p, v) ---------------------------------------------- |
---|
812 | |
---|
813 | G4double |
---|
814 | G4VTwistedFaceted::DistanceToOut( const G4ThreeVector& p, |
---|
815 | const G4ThreeVector& v, |
---|
816 | const G4bool calcNorm, |
---|
817 | G4bool *validNorm, |
---|
818 | G4ThreeVector *norm ) const |
---|
819 | { |
---|
820 | // DistanceToOut (p, v): |
---|
821 | // Calculate distance to surface of shape from `inside' |
---|
822 | // along with the v, allowing for tolerance. |
---|
823 | // The function returns kInfinity if no intersection or |
---|
824 | // just grazing within tolerance. |
---|
825 | |
---|
826 | // |
---|
827 | // checking last value |
---|
828 | // |
---|
829 | |
---|
830 | G4ThreeVector *tmpp; |
---|
831 | G4ThreeVector *tmpv; |
---|
832 | G4double *tmpdist; |
---|
833 | if (fLastDistanceToOutWithV.p == p && fLastDistanceToOutWithV.vec == v ) |
---|
834 | { |
---|
835 | return fLastDistanceToOutWithV.value; |
---|
836 | } |
---|
837 | else |
---|
838 | { |
---|
839 | tmpp = const_cast<G4ThreeVector*>(&(fLastDistanceToOutWithV.p)); |
---|
840 | tmpv = const_cast<G4ThreeVector*>(&(fLastDistanceToOutWithV.vec)); |
---|
841 | tmpdist = const_cast<G4double*>(&(fLastDistanceToOutWithV.value)); |
---|
842 | tmpp->set(p.x(), p.y(), p.z()); |
---|
843 | tmpv->set(v.x(), v.y(), v.z()); |
---|
844 | } |
---|
845 | |
---|
846 | // |
---|
847 | // Calculate DistanceToOut(p,v) |
---|
848 | // |
---|
849 | |
---|
850 | EInside currentside = Inside(p); |
---|
851 | |
---|
852 | if (currentside == kOutside) |
---|
853 | { |
---|
854 | } |
---|
855 | else if (currentside == kSurface) |
---|
856 | { |
---|
857 | // particle is just on a boundary. |
---|
858 | // if the particle is exiting from the volume, return 0 |
---|
859 | // |
---|
860 | G4ThreeVector normal = SurfaceNormal(p); |
---|
861 | G4VTwistSurface *blockedsurface = fLastNormal.surface[0]; |
---|
862 | if (normal*v > 0) |
---|
863 | { |
---|
864 | if (calcNorm) |
---|
865 | { |
---|
866 | *norm = (blockedsurface->GetNormal(p, true)); |
---|
867 | *validNorm = blockedsurface->IsValidNorm(); |
---|
868 | } |
---|
869 | *tmpdist = 0.; |
---|
870 | // timer.Stop(); |
---|
871 | return fLastDistanceToOutWithV.value; |
---|
872 | } |
---|
873 | } |
---|
874 | |
---|
875 | // now, we can take smallest positive distance. |
---|
876 | |
---|
877 | // Initialize |
---|
878 | G4double distance = kInfinity; |
---|
879 | |
---|
880 | // find intersections and choose nearest one. |
---|
881 | G4VTwistSurface *surfaces[6]; |
---|
882 | |
---|
883 | surfaces[0] = fSide0; |
---|
884 | surfaces[1] = fSide90 ; |
---|
885 | surfaces[2] = fSide180 ; |
---|
886 | surfaces[3] = fSide270 ; |
---|
887 | surfaces[4] = fLowerEndcap; |
---|
888 | surfaces[5] = fUpperEndcap; |
---|
889 | |
---|
890 | G4int i; |
---|
891 | G4int besti = -1; |
---|
892 | G4ThreeVector xx; |
---|
893 | G4ThreeVector bestxx; |
---|
894 | for (i=0; i< 6 ; i++) { |
---|
895 | G4double tmpdistance = surfaces[i]->DistanceToOut(p, v, xx); |
---|
896 | if (tmpdistance < distance) |
---|
897 | { |
---|
898 | distance = tmpdistance; |
---|
899 | bestxx = xx; |
---|
900 | besti = i; |
---|
901 | } |
---|
902 | } |
---|
903 | |
---|
904 | if (calcNorm) |
---|
905 | { |
---|
906 | if (besti != -1) |
---|
907 | { |
---|
908 | *norm = (surfaces[besti]->GetNormal(p, true)); |
---|
909 | *validNorm = surfaces[besti]->IsValidNorm(); |
---|
910 | } |
---|
911 | } |
---|
912 | |
---|
913 | *tmpdist = distance; |
---|
914 | // timer.Stop(); |
---|
915 | return fLastDistanceToOutWithV.value; |
---|
916 | } |
---|
917 | |
---|
918 | |
---|
919 | G4double G4VTwistedFaceted::DistanceToOut( const G4ThreeVector& p ) const |
---|
920 | { |
---|
921 | // DistanceToOut(p): |
---|
922 | // Calculate distance to surface of shape from `inside', |
---|
923 | // allowing for tolerance |
---|
924 | |
---|
925 | // |
---|
926 | // checking last value |
---|
927 | // |
---|
928 | |
---|
929 | |
---|
930 | G4ThreeVector *tmpp; |
---|
931 | G4double *tmpdist; |
---|
932 | if (fLastDistanceToOut.p == p) |
---|
933 | { |
---|
934 | return fLastDistanceToOut.value; |
---|
935 | } |
---|
936 | else |
---|
937 | { |
---|
938 | tmpp = const_cast<G4ThreeVector*>(&(fLastDistanceToOut.p)); |
---|
939 | tmpdist = const_cast<G4double*>(&(fLastDistanceToOut.value)); |
---|
940 | tmpp->set(p.x(), p.y(), p.z()); |
---|
941 | } |
---|
942 | |
---|
943 | // |
---|
944 | // Calculate DistanceToOut(p) |
---|
945 | // |
---|
946 | |
---|
947 | EInside currentside = Inside(p); |
---|
948 | |
---|
949 | switch (currentside) |
---|
950 | { |
---|
951 | case (kOutside) : |
---|
952 | { |
---|
953 | #ifdef G4SPECSDEBUG |
---|
954 | G4cout.precision(16) ; |
---|
955 | G4cout << G4endl ; |
---|
956 | DumpInfo(); |
---|
957 | G4cout << "Position:" << G4endl << G4endl ; |
---|
958 | G4cout << "p.x() = " << p.x()/mm << " mm" << G4endl ; |
---|
959 | G4cout << "p.y() = " << p.y()/mm << " mm" << G4endl ; |
---|
960 | G4cout << "p.z() = " << p.z()/mm << " mm" << G4endl << G4endl ; |
---|
961 | G4Exception("G4VTwistedFaceted::DistanceToOut(p)", "Notification", |
---|
962 | JustWarning, "Point p is outside !?" ); |
---|
963 | #endif |
---|
964 | } |
---|
965 | case (kSurface) : |
---|
966 | { |
---|
967 | *tmpdist = 0.; |
---|
968 | return fLastDistanceToOut.value; |
---|
969 | } |
---|
970 | |
---|
971 | case (kInside) : |
---|
972 | { |
---|
973 | // Initialize |
---|
974 | // |
---|
975 | G4double distance = kInfinity; |
---|
976 | |
---|
977 | // find intersections and choose nearest one |
---|
978 | // |
---|
979 | G4VTwistSurface *surfaces[6]; |
---|
980 | |
---|
981 | surfaces[0] = fSide0; |
---|
982 | surfaces[1] = fSide90 ; |
---|
983 | surfaces[2] = fSide180 ; |
---|
984 | surfaces[3] = fSide270 ; |
---|
985 | surfaces[4] = fLowerEndcap; |
---|
986 | surfaces[5] = fUpperEndcap; |
---|
987 | |
---|
988 | G4int i; |
---|
989 | G4int besti = -1; |
---|
990 | G4ThreeVector xx; |
---|
991 | G4ThreeVector bestxx; |
---|
992 | for (i=0; i< 6; i++) |
---|
993 | { |
---|
994 | G4double tmpdistance = surfaces[i]->DistanceTo(p, xx); |
---|
995 | if (tmpdistance < distance) |
---|
996 | { |
---|
997 | distance = tmpdistance; |
---|
998 | bestxx = xx; |
---|
999 | besti = i; |
---|
1000 | } |
---|
1001 | } |
---|
1002 | *tmpdist = distance; |
---|
1003 | |
---|
1004 | return fLastDistanceToOut.value; |
---|
1005 | } |
---|
1006 | |
---|
1007 | default : |
---|
1008 | { |
---|
1009 | G4Exception("G4VTwistedFaceted::DistanceToOut(p)", "InvalidCondition", |
---|
1010 | FatalException, "Unknown point location!"); |
---|
1011 | } |
---|
1012 | } // switch end |
---|
1013 | |
---|
1014 | return kInfinity; |
---|
1015 | } |
---|
1016 | |
---|
1017 | |
---|
1018 | //===================================================================== |
---|
1019 | //* StreamInfo -------------------------------------------------------- |
---|
1020 | |
---|
1021 | std::ostream& G4VTwistedFaceted::StreamInfo(std::ostream& os) const |
---|
1022 | { |
---|
1023 | // |
---|
1024 | // Stream object contents to an output stream |
---|
1025 | // |
---|
1026 | os << "-----------------------------------------------------------\n" |
---|
1027 | << " *** Dump for solid - " << GetName() << " ***\n" |
---|
1028 | << " ===================================================\n" |
---|
1029 | << " Solid type: G4VTwistedFaceted\n" |
---|
1030 | << " Parameters: \n" |
---|
1031 | << " polar angle theta = " << fTheta/degree << " deg" << G4endl |
---|
1032 | << " azimuthal angle phi = " << fPhi/degree << " deg" << G4endl |
---|
1033 | << " tilt angle alpha = " << fAlph/degree << " deg" << G4endl |
---|
1034 | << " TWIST angle = " << fPhiTwist/degree << " deg" << G4endl |
---|
1035 | << " Half length along y (lower endcap) = " << fDy1/cm << " cm" |
---|
1036 | << G4endl |
---|
1037 | << " Half length along x (lower endcap, bottom) = " << fDx1/cm << " cm" |
---|
1038 | << G4endl |
---|
1039 | << " Half length along x (lower endcap, top) = " << fDx2/cm << " cm" |
---|
1040 | << G4endl |
---|
1041 | << " Half length along y (upper endcap) = " << fDy2/cm << " cm" |
---|
1042 | << G4endl |
---|
1043 | << " Half length along x (upper endcap, bottom) = " << fDx3/cm << " cm" |
---|
1044 | << G4endl |
---|
1045 | << " Half length along x (upper endcap, top) = " << fDx4/cm << " cm" |
---|
1046 | << G4endl |
---|
1047 | << "-----------------------------------------------------------\n"; |
---|
1048 | |
---|
1049 | return os; |
---|
1050 | } |
---|
1051 | |
---|
1052 | |
---|
1053 | //===================================================================== |
---|
1054 | //* DiscribeYourselfTo ------------------------------------------------ |
---|
1055 | |
---|
1056 | void G4VTwistedFaceted::DescribeYourselfTo (G4VGraphicsScene& scene) const |
---|
1057 | { |
---|
1058 | scene.AddSolid (*this); |
---|
1059 | } |
---|
1060 | |
---|
1061 | //===================================================================== |
---|
1062 | //* GetExtent --------------------------------------------------------- |
---|
1063 | |
---|
1064 | G4VisExtent G4VTwistedFaceted::GetExtent() const |
---|
1065 | { |
---|
1066 | G4double maxRad = std::sqrt( fDx*fDx + fDy*fDy); |
---|
1067 | |
---|
1068 | return G4VisExtent(-maxRad, maxRad , |
---|
1069 | -maxRad, maxRad , |
---|
1070 | -fDz, fDz ); |
---|
1071 | } |
---|
1072 | |
---|
1073 | |
---|
1074 | //===================================================================== |
---|
1075 | //* CreateNUBS -------------------------------------------------------- |
---|
1076 | |
---|
1077 | G4NURBS* G4VTwistedFaceted::CreateNURBS () const |
---|
1078 | { |
---|
1079 | G4double maxRad = std::sqrt( fDx*fDx + fDy*fDy); |
---|
1080 | |
---|
1081 | return new G4NURBStube(maxRad, maxRad, fDz); |
---|
1082 | // Tube for now!!! |
---|
1083 | } |
---|
1084 | |
---|
1085 | |
---|
1086 | //===================================================================== |
---|
1087 | //* CreateSurfaces ---------------------------------------------------- |
---|
1088 | |
---|
1089 | void G4VTwistedFaceted::CreateSurfaces() |
---|
1090 | { |
---|
1091 | |
---|
1092 | // create 6 surfaces of TwistedTub. |
---|
1093 | |
---|
1094 | if ( fDx1 == fDx2 && fDx3 == fDx4 ) // special case : Box |
---|
1095 | { |
---|
1096 | fSide0 = new G4TwistBoxSide("0deg", fPhiTwist, fDz, fTheta, fPhi, |
---|
1097 | fDy1, fDx1, fDx1, fDy2, fDx3, fDx3, fAlph, 0.*deg); |
---|
1098 | fSide180 = new G4TwistBoxSide("180deg", fPhiTwist, fDz, fTheta, fPhi+pi, |
---|
1099 | fDy1, fDx1, fDx1, fDy2, fDx3, fDx3, fAlph, 180.*deg); |
---|
1100 | } |
---|
1101 | else // default general case |
---|
1102 | { |
---|
1103 | fSide0 = new G4TwistTrapAlphaSide("0deg" ,fPhiTwist, fDz, fTheta, |
---|
1104 | fPhi, fDy1, fDx1, fDx2, fDy2, fDx3, fDx4, fAlph, 0.*deg); |
---|
1105 | fSide180 = new G4TwistTrapAlphaSide("180deg", fPhiTwist, fDz, fTheta, |
---|
1106 | fPhi+pi, fDy1, fDx2, fDx1, fDy2, fDx4, fDx3, fAlph, 180.*deg); |
---|
1107 | } |
---|
1108 | |
---|
1109 | // create parallel sides |
---|
1110 | // |
---|
1111 | fSide90 = new G4TwistTrapParallelSide("90deg", fPhiTwist, fDz, fTheta, |
---|
1112 | fPhi, fDy1, fDx1, fDx2, fDy2, fDx3, fDx4, fAlph, 0.*deg); |
---|
1113 | fSide270 = new G4TwistTrapParallelSide("270deg", fPhiTwist, fDz, fTheta, |
---|
1114 | fPhi+pi, fDy1, fDx2, fDx1, fDy2, fDx4, fDx3, fAlph, 180.*deg); |
---|
1115 | |
---|
1116 | // create endcaps |
---|
1117 | // |
---|
1118 | fUpperEndcap = new G4TwistTrapFlatSide("UpperCap",fPhiTwist, fDx3, fDx4, fDy2, |
---|
1119 | fDz, fAlph, fPhi, fTheta, 1 ); |
---|
1120 | fLowerEndcap = new G4TwistTrapFlatSide("LowerCap",fPhiTwist, fDx1, fDx2, fDy1, |
---|
1121 | fDz, fAlph, fPhi, fTheta, -1 ); |
---|
1122 | |
---|
1123 | // Set neighbour surfaces |
---|
1124 | |
---|
1125 | fSide0->SetNeighbours( fSide270 , fLowerEndcap , fSide90 , fUpperEndcap ); |
---|
1126 | fSide90->SetNeighbours( fSide0 , fLowerEndcap , fSide180 , fUpperEndcap ); |
---|
1127 | fSide180->SetNeighbours(fSide90 , fLowerEndcap , fSide270 , fUpperEndcap ); |
---|
1128 | fSide270->SetNeighbours(fSide180 , fLowerEndcap , fSide0 , fUpperEndcap ); |
---|
1129 | fUpperEndcap->SetNeighbours( fSide180, fSide270 , fSide0 , fSide90 ); |
---|
1130 | fLowerEndcap->SetNeighbours( fSide180, fSide270 , fSide0 , fSide90 ); |
---|
1131 | |
---|
1132 | } |
---|
1133 | |
---|
1134 | |
---|
1135 | //===================================================================== |
---|
1136 | //* GetEntityType ----------------------------------------------------- |
---|
1137 | |
---|
1138 | G4GeometryType G4VTwistedFaceted::GetEntityType() const |
---|
1139 | { |
---|
1140 | return G4String("G4VTwistedFaceted"); |
---|
1141 | } |
---|
1142 | |
---|
1143 | |
---|
1144 | //===================================================================== |
---|
1145 | //* GetPolyhedron ----------------------------------------------------- |
---|
1146 | |
---|
1147 | G4Polyhedron* G4VTwistedFaceted::GetPolyhedron() const |
---|
1148 | { |
---|
1149 | if (!fpPolyhedron || |
---|
1150 | fpPolyhedron->GetNumberOfRotationStepsAtTimeOfCreation() != |
---|
1151 | fpPolyhedron->GetNumberOfRotationSteps()) |
---|
1152 | { |
---|
1153 | delete fpPolyhedron; |
---|
1154 | fpPolyhedron = CreatePolyhedron(); |
---|
1155 | } |
---|
1156 | |
---|
1157 | return fpPolyhedron; |
---|
1158 | } |
---|
1159 | |
---|
1160 | |
---|
1161 | //===================================================================== |
---|
1162 | //* GetPointInSolid --------------------------------------------------- |
---|
1163 | |
---|
1164 | G4ThreeVector G4VTwistedFaceted::GetPointInSolid(G4double z) const |
---|
1165 | { |
---|
1166 | |
---|
1167 | |
---|
1168 | // this routine is only used for a test |
---|
1169 | // can be deleted ... |
---|
1170 | |
---|
1171 | if ( z == fDz ) z -= 0.1*fDz ; |
---|
1172 | if ( z == -fDz ) z += 0.1*fDz ; |
---|
1173 | |
---|
1174 | G4double phi = z/(2*fDz)*fPhiTwist ; |
---|
1175 | |
---|
1176 | return G4ThreeVector(fdeltaX * phi/fPhiTwist, fdeltaY * phi/fPhiTwist, z ) ; |
---|
1177 | } |
---|
1178 | |
---|
1179 | |
---|
1180 | //===================================================================== |
---|
1181 | //* GetPointOnSurface ------------------------------------------------- |
---|
1182 | |
---|
1183 | G4ThreeVector G4VTwistedFaceted::GetPointOnSurface() const |
---|
1184 | { |
---|
1185 | |
---|
1186 | G4double phi = CLHEP::RandFlat::shoot(-fPhiTwist/2.,fPhiTwist/2.); |
---|
1187 | G4double u , umin, umax ; // variable for twisted surfaces |
---|
1188 | G4double y ; // variable for flat surface (top and bottom) |
---|
1189 | |
---|
1190 | // Compute the areas. Attention: Only correct for trapezoids |
---|
1191 | // where the twisting is done along the z-axis. In the general case |
---|
1192 | // the computed surface area is more difficult. However this simplification |
---|
1193 | // does not affect the tracking through the solid. |
---|
1194 | |
---|
1195 | G4double a1 = fSide0->GetSurfaceArea(); |
---|
1196 | G4double a2 = fSide90->GetSurfaceArea(); |
---|
1197 | G4double a3 = fSide180->GetSurfaceArea() ; |
---|
1198 | G4double a4 = fSide270->GetSurfaceArea() ; |
---|
1199 | G4double a5 = fLowerEndcap->GetSurfaceArea() ; |
---|
1200 | G4double a6 = fUpperEndcap->GetSurfaceArea() ; |
---|
1201 | |
---|
1202 | #ifdef G4TWISTDEBUG |
---|
1203 | G4cout << "Surface 0 deg = " << a1 << G4endl ; |
---|
1204 | G4cout << "Surface 90 deg = " << a2 << G4endl ; |
---|
1205 | G4cout << "Surface 180 deg = " << a3 << G4endl ; |
---|
1206 | G4cout << "Surface 270 deg = " << a4 << G4endl ; |
---|
1207 | G4cout << "Surface Lower = " << a5 << G4endl ; |
---|
1208 | G4cout << "Surface Upper = " << a6 << G4endl ; |
---|
1209 | #endif |
---|
1210 | |
---|
1211 | G4double chose = CLHEP::RandFlat::shoot(0.,a1 + a2 + a3 + a4 + a5 + a6) ; |
---|
1212 | |
---|
1213 | if(chose < a1) |
---|
1214 | { |
---|
1215 | |
---|
1216 | umin = fSide0->GetBoundaryMin(phi) ; |
---|
1217 | umax = fSide0->GetBoundaryMax(phi) ; |
---|
1218 | u = CLHEP::RandFlat::shoot(umin,umax) ; |
---|
1219 | |
---|
1220 | return fSide0->SurfacePoint(phi, u, true) ; // point on 0deg surface |
---|
1221 | } |
---|
1222 | |
---|
1223 | else if( (chose >= a1) && (chose < a1 + a2 ) ) |
---|
1224 | { |
---|
1225 | |
---|
1226 | umin = fSide90->GetBoundaryMin(phi) ; |
---|
1227 | umax = fSide90->GetBoundaryMax(phi) ; |
---|
1228 | |
---|
1229 | u = CLHEP::RandFlat::shoot(umin,umax) ; |
---|
1230 | |
---|
1231 | return fSide90->SurfacePoint(phi, u, true); // point on 90deg surface |
---|
1232 | } |
---|
1233 | |
---|
1234 | else if( (chose >= a1 + a2 ) && (chose < a1 + a2 + a3 ) ) |
---|
1235 | { |
---|
1236 | |
---|
1237 | umin = fSide180->GetBoundaryMin(phi) ; |
---|
1238 | umax = fSide180->GetBoundaryMax(phi) ; |
---|
1239 | u = CLHEP::RandFlat::shoot(umin,umax) ; |
---|
1240 | |
---|
1241 | return fSide180->SurfacePoint(phi, u, true); // point on 180 deg surface |
---|
1242 | } |
---|
1243 | |
---|
1244 | else if( (chose >= a1 + a2 + a3 ) && (chose < a1 + a2 + a3 + a4 ) ) |
---|
1245 | { |
---|
1246 | |
---|
1247 | umin = fSide270->GetBoundaryMin(phi) ; |
---|
1248 | umax = fSide270->GetBoundaryMax(phi) ; |
---|
1249 | u = CLHEP::RandFlat::shoot(umin,umax) ; |
---|
1250 | |
---|
1251 | return fSide270->SurfacePoint(phi, u, true); // point on 270 deg surface |
---|
1252 | } |
---|
1253 | |
---|
1254 | else if( (chose >= a1 + a2 + a3 + a4 ) && (chose < a1 + a2 + a3 + a4 + a5 ) ) |
---|
1255 | { |
---|
1256 | |
---|
1257 | y = CLHEP::RandFlat::shoot(-fDy1,fDy1) ; |
---|
1258 | umin = fLowerEndcap->GetBoundaryMin(y) ; |
---|
1259 | umax = fLowerEndcap->GetBoundaryMax(y) ; |
---|
1260 | u = CLHEP::RandFlat::shoot(umin,umax) ; |
---|
1261 | |
---|
1262 | return fLowerEndcap->SurfacePoint(u,y,true); // point on lower endcap |
---|
1263 | } |
---|
1264 | else { |
---|
1265 | |
---|
1266 | y = CLHEP::RandFlat::shoot(-fDy2,fDy2) ; |
---|
1267 | umin = fUpperEndcap->GetBoundaryMin(y) ; |
---|
1268 | umax = fUpperEndcap->GetBoundaryMax(y) ; |
---|
1269 | u = CLHEP::RandFlat::shoot(umin,umax) ; |
---|
1270 | |
---|
1271 | return fUpperEndcap->SurfacePoint(u,y,true) ; // point on upper endcap |
---|
1272 | |
---|
1273 | } |
---|
1274 | } |
---|
1275 | |
---|
1276 | |
---|
1277 | //===================================================================== |
---|
1278 | //* CreatePolyhedron -------------------------------------------------- |
---|
1279 | |
---|
1280 | G4Polyhedron* G4VTwistedFaceted::CreatePolyhedron () const |
---|
1281 | { |
---|
1282 | // number of meshes |
---|
1283 | const G4int m = |
---|
1284 | G4int(G4Polyhedron::GetNumberOfRotationSteps() * fPhiTwist / twopi) + 2; |
---|
1285 | const G4int n = m; |
---|
1286 | |
---|
1287 | const G4int nnodes = 4*(m-1)*(n-2) + 2*m*m ; |
---|
1288 | const G4int nfaces = 4*(m-1)*(n-1) + 2*(m-1)*(m-1) ; |
---|
1289 | |
---|
1290 | G4Polyhedron *ph=new G4Polyhedron; |
---|
1291 | typedef G4double G4double3[3]; |
---|
1292 | typedef G4int G4int4[4]; |
---|
1293 | G4double3* xyz = new G4double3[nnodes]; // number of nodes |
---|
1294 | G4int4* faces = new G4int4[nfaces] ; // number of faces |
---|
1295 | |
---|
1296 | fLowerEndcap->GetFacets(m,m,xyz,faces,0) ; |
---|
1297 | fUpperEndcap->GetFacets(m,m,xyz,faces,1) ; |
---|
1298 | fSide270->GetFacets(m,n,xyz,faces,2) ; |
---|
1299 | fSide0->GetFacets(m,n,xyz,faces,3) ; |
---|
1300 | fSide90->GetFacets(m,n,xyz,faces,4) ; |
---|
1301 | fSide180->GetFacets(m,n,xyz,faces,5) ; |
---|
1302 | |
---|
1303 | ph->createPolyhedron(nnodes,nfaces,xyz,faces); |
---|
1304 | |
---|
1305 | return ph; |
---|
1306 | } |
---|