[831] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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[850] | 27 | // $Id: G4Trap.cc,v 1.45 2008/04/23 09:49:57 gcosmo Exp $ |
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[1058] | 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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[831] | 29 | // |
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| 30 | // class G4Trap |
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| 31 | // |
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| 32 | // Implementation for G4Trap class |
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| 33 | // |
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| 34 | // History: |
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| 35 | // |
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| 36 | // 28.04.05 V.Grichine: new SurfaceNormal according to J. Apostolakis proposal |
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| 37 | // 26.04.05 V.Grichine: new SurfaceNormal is default |
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| 38 | // 19.04.05 V.Grichine: bug fixed in G4Trap("name",G4ThreeVector[8] vp) |
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| 39 | // 12.12.04 V.Grichine: SurfaceNormal with edges/vertices |
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| 40 | // 15.11.04 V.Grichine: bug fixed in G4Trap("name",G4ThreeVector[8] vp) |
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| 41 | // 13.12.99 V.Grichine: bug fixed in DistanceToIn(p,v) |
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| 42 | // 19.11.99 V.Grichine: kUndef was added to Eside enum |
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| 43 | // 04.06.99 S.Giani: Fixed CalculateExtent in rotated case. |
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| 44 | // 08.12.97 J.Allison: Added "nominal" constructor and method SetAllParameters. |
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| 45 | // 01.11.96 V.Grichine: Costructor for Right Angular Wedge from STEP, G4Trd/Para |
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| 46 | // 09.09.96 V.Grichine: Final modifications before to commit |
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| 47 | // 21.03.95 P.Kent: Modified for `tolerant' geometry |
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| 48 | // |
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| 49 | //////////////////////////////////////////////////////////////////////////////////// |
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| 50 | |
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| 51 | #include "G4Trap.hh" |
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| 52 | #include "globals.hh" |
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| 53 | |
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| 54 | #include "G4VoxelLimits.hh" |
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| 55 | #include "G4AffineTransform.hh" |
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| 56 | |
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| 57 | #include "G4VPVParameterisation.hh" |
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| 58 | |
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| 59 | #include "Randomize.hh" |
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| 60 | |
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| 61 | #include "G4VGraphicsScene.hh" |
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| 62 | #include "G4Polyhedron.hh" |
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| 63 | #include "G4NURBS.hh" |
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| 64 | #include "G4NURBSbox.hh" |
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| 65 | |
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| 66 | using namespace CLHEP; |
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| 67 | |
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| 68 | //////////////////////////////////////////////////////////////////////// |
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| 69 | // |
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| 70 | // Accuracy of coplanarity |
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| 71 | |
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| 72 | const G4double kCoplanar_Tolerance = 1E-4 ; |
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| 73 | |
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| 74 | ////////////////////////////////////////////////////////////////////////// |
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| 75 | // |
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| 76 | // Private enum: Not for external use |
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| 77 | |
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| 78 | enum Eside {kUndef,ks0,ks1,ks2,ks3,kPZ,kMZ}; |
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| 79 | |
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| 80 | ////////////////////////////////////////////////////////////////////////// |
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| 81 | // |
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| 82 | // Constructor - check and set half-widths as well as angles: |
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| 83 | // final check of coplanarity |
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| 84 | |
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| 85 | G4Trap::G4Trap( const G4String& pName, |
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| 86 | G4double pDz, |
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| 87 | G4double pTheta, G4double pPhi, |
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| 88 | G4double pDy1, G4double pDx1, G4double pDx2, |
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| 89 | G4double pAlp1, |
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| 90 | G4double pDy2, G4double pDx3, G4double pDx4, |
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| 91 | G4double pAlp2) |
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| 92 | : G4CSGSolid(pName) |
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| 93 | { |
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| 94 | if ( pDz > 0 && pDy1 > 0 && pDx1 > 0 && |
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| 95 | pDx2 > 0 && pDy2 > 0 && pDx3 > 0 && pDx4 > 0 ) |
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| 96 | { |
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| 97 | fDz=pDz; |
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| 98 | fTthetaCphi=std::tan(pTheta)*std::cos(pPhi); |
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| 99 | fTthetaSphi=std::tan(pTheta)*std::sin(pPhi); |
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| 100 | |
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| 101 | fDy1=pDy1; |
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| 102 | fDx1=pDx1; |
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| 103 | fDx2=pDx2; |
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| 104 | fTalpha1=std::tan(pAlp1); |
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| 105 | |
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| 106 | fDy2=pDy2; |
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| 107 | fDx3=pDx3; |
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| 108 | fDx4=pDx4; |
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| 109 | fTalpha2=std::tan(pAlp2); |
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| 110 | |
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| 111 | MakePlanes(); |
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| 112 | } |
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| 113 | else |
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| 114 | { |
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| 115 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl |
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| 116 | << " Invalid dimensions !" << G4endl |
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| 117 | << " X - " |
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| 118 | << pDx1 << ", " << pDx2 << ", " << pDx3 << ", " << pDx4 << G4endl |
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| 119 | << " Y - " << pDy1 << ", " << pDy2 << G4endl |
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| 120 | << " Z - " << pDz << G4endl; |
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| 121 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 122 | "Invalid length G4Trap parameters."); |
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| 123 | } |
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| 124 | } |
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| 125 | |
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| 126 | //////////////////////////////////////////////////////////////////////////// |
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| 127 | // |
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| 128 | // Constructor - Design of trapezoid based on 8 G4ThreeVector parameters, |
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| 129 | // which are its vertices. Checking of planarity with preparation of |
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| 130 | // fPlanes[] and than calculation of other members |
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| 131 | |
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| 132 | G4Trap::G4Trap( const G4String& pName, |
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| 133 | const G4ThreeVector pt[8] ) |
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| 134 | : G4CSGSolid(pName) |
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| 135 | { |
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| 136 | // Start with check of centering - the center of gravity trap line |
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| 137 | // should cross the origin of frame |
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| 138 | |
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| 139 | if ( pt[0].z() < 0 |
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| 140 | && pt[0].z() == pt[1].z() && pt[0].z() == pt[2].z() |
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| 141 | && pt[0].z() == pt[3].z() |
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| 142 | && pt[4].z() > 0 |
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| 143 | && pt[4].z() == pt[5].z() && pt[4].z() == pt[6].z() |
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| 144 | && pt[4].z() == pt[7].z() |
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| 145 | && std::fabs( pt[0].z() + pt[4].z() ) < kCarTolerance |
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| 146 | && pt[0].y() == pt[1].y() && pt[2].y() == pt[3].y() |
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| 147 | && pt[4].y() == pt[5].y() && pt[6].y() == pt[7].y() |
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| 148 | && std::fabs( pt[0].y() + pt[2].y() + pt[4].y() + pt[6].y() ) < kCarTolerance |
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| 149 | && std::fabs( pt[0].x() + pt[1].x() + pt[4].x() + pt[5].x() + |
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| 150 | pt[2].x() + pt[3].x() + pt[6].x() + pt[7].x() ) < kCarTolerance ) |
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| 151 | { |
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| 152 | G4bool good; |
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| 153 | |
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| 154 | // Bottom side with normal approx. -Y |
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| 155 | |
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| 156 | good = MakePlane(pt[0],pt[4],pt[5],pt[1],fPlanes[0]); |
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| 157 | |
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| 158 | if (!good) |
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| 159 | { |
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| 160 | DumpInfo(); |
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| 161 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 162 | "Face at ~-Y not planar."); |
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| 163 | } |
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| 164 | |
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| 165 | // Top side with normal approx. +Y |
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| 166 | |
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| 167 | good = MakePlane(pt[2],pt[3],pt[7],pt[6],fPlanes[1]); |
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| 168 | |
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| 169 | if (!good) |
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| 170 | { |
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| 171 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
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| 172 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 173 | "Face at ~+Y not planar."); |
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| 174 | } |
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| 175 | |
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| 176 | // Front side with normal approx. -X |
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| 177 | |
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| 178 | good = MakePlane(pt[0],pt[2],pt[6],pt[4],fPlanes[2]); |
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| 179 | |
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| 180 | if (!good) |
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| 181 | { |
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| 182 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
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| 183 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 184 | "Face at ~-X not planar."); |
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| 185 | } |
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| 186 | |
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| 187 | // Back side iwth normal approx. +X |
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| 188 | |
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| 189 | good = MakePlane(pt[1],pt[5],pt[7],pt[3],fPlanes[3]); |
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| 190 | if (!good) |
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| 191 | { |
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| 192 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
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| 193 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 194 | "Face at ~+X not planar."); |
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| 195 | } |
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| 196 | fDz = (pt[7]).z() ; |
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| 197 | |
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| 198 | fDy1 = ((pt[2]).y()-(pt[1]).y())*0.5; |
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| 199 | fDx1 = ((pt[1]).x()-(pt[0]).x())*0.5; |
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| 200 | fDx2 = ((pt[3]).x()-(pt[2]).x())*0.5; |
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| 201 | fTalpha1 = ((pt[2]).x()+(pt[3]).x()-(pt[1]).x()-(pt[0]).x())*0.25/fDy1; |
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| 202 | |
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| 203 | fDy2 = ((pt[6]).y()-(pt[5]).y())*0.5; |
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| 204 | fDx3 = ((pt[5]).x()-(pt[4]).x())*0.5; |
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| 205 | fDx4 = ((pt[7]).x()-(pt[6]).x())*0.5; |
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| 206 | fTalpha2 = ((pt[6]).x()+(pt[7]).x()-(pt[5]).x()-(pt[4]).x())*0.25/fDy2; |
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| 207 | |
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| 208 | fTthetaCphi = ((pt[4]).x()+fDy2*fTalpha2+fDx3)/fDz; |
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| 209 | fTthetaSphi = ((pt[4]).y()+fDy2)/fDz; |
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| 210 | } |
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| 211 | else |
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| 212 | { |
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| 213 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
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| 214 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 215 | "Invalid vertice coordinates."); |
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| 216 | } |
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| 217 | } |
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| 218 | |
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| 219 | ////////////////////////////////////////////////////////////////////////////// |
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| 220 | // |
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| 221 | // Constructor for Right Angular Wedge from STEP |
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| 222 | |
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| 223 | G4Trap::G4Trap( const G4String& pName, |
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| 224 | G4double pZ, |
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| 225 | G4double pY, |
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| 226 | G4double pX, G4double pLTX ) |
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| 227 | : G4CSGSolid(pName) |
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| 228 | |
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| 229 | { |
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| 230 | G4bool good; |
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| 231 | |
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| 232 | if ( pZ>0 && pY>0 && pX>0 && pLTX>0 && pLTX<=pX ) |
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| 233 | { |
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| 234 | fDz = 0.5*pZ ; |
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| 235 | fTthetaCphi = 0 ; |
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| 236 | fTthetaSphi = 0 ; |
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| 237 | |
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| 238 | fDy1 = 0.5*pY; |
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| 239 | fDx1 = 0.5*pX ; |
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| 240 | fDx2 = 0.5*pLTX; |
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| 241 | fTalpha1 = 0.5*(pLTX - pX)/pY; |
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| 242 | |
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| 243 | fDy2 = fDy1 ; |
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| 244 | fDx3 = fDx1; |
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| 245 | fDx4 = fDx2 ; |
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| 246 | fTalpha2 = fTalpha1 ; |
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| 247 | |
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| 248 | G4ThreeVector pt[8] ; |
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| 249 | |
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| 250 | pt[0]=G4ThreeVector(-fDz*fTthetaCphi-fDy1*fTalpha1-fDx1, |
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| 251 | -fDz*fTthetaSphi-fDy1,-fDz); |
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| 252 | pt[1]=G4ThreeVector(-fDz*fTthetaCphi-fDy1*fTalpha1+fDx1, |
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| 253 | -fDz*fTthetaSphi-fDy1,-fDz); |
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| 254 | pt[2]=G4ThreeVector(-fDz*fTthetaCphi+fDy1*fTalpha1-fDx2, |
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| 255 | -fDz*fTthetaSphi+fDy1,-fDz); |
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| 256 | pt[3]=G4ThreeVector(-fDz*fTthetaCphi+fDy1*fTalpha1+fDx2, |
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| 257 | -fDz*fTthetaSphi+fDy1,-fDz); |
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| 258 | pt[4]=G4ThreeVector(+fDz*fTthetaCphi-fDy2*fTalpha2-fDx3, |
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| 259 | +fDz*fTthetaSphi-fDy2,+fDz); |
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| 260 | pt[5]=G4ThreeVector(+fDz*fTthetaCphi-fDy2*fTalpha2+fDx3, |
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| 261 | +fDz*fTthetaSphi-fDy2,+fDz); |
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| 262 | pt[6]=G4ThreeVector(+fDz*fTthetaCphi+fDy2*fTalpha2-fDx4, |
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| 263 | +fDz*fTthetaSphi+fDy2,+fDz); |
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| 264 | pt[7]=G4ThreeVector(+fDz*fTthetaCphi+fDy2*fTalpha2+fDx4, |
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| 265 | +fDz*fTthetaSphi+fDy2,+fDz); |
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| 266 | |
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| 267 | // Bottom side with normal approx. -Y |
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| 268 | // |
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| 269 | good=MakePlane(pt[0],pt[4],pt[5],pt[1],fPlanes[0]); |
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| 270 | if (!good) |
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| 271 | { |
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| 272 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
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| 273 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 274 | "Face at ~-Y not planar."); |
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| 275 | } |
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| 276 | |
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| 277 | // Top side with normal approx. +Y |
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| 278 | // |
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| 279 | good=MakePlane(pt[2],pt[3],pt[7],pt[6],fPlanes[1]); |
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| 280 | if (!good) |
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| 281 | { |
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| 282 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
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| 283 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 284 | "Face at ~+Y not planar."); |
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| 285 | } |
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| 286 | |
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| 287 | // Front side with normal approx. -X |
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| 288 | // |
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| 289 | good=MakePlane(pt[0],pt[2],pt[6],pt[4],fPlanes[2]); |
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| 290 | if (!good) |
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| 291 | { |
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| 292 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
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| 293 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 294 | "Face at ~-X not planar."); |
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| 295 | } |
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| 296 | |
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| 297 | // Back side iwth normal approx. +X |
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| 298 | // |
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| 299 | good=MakePlane(pt[1],pt[5],pt[7],pt[3],fPlanes[3]); |
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| 300 | if (!good) |
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| 301 | { |
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| 302 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
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| 303 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 304 | "Face at ~+X not planar."); |
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| 305 | } |
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| 306 | } |
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| 307 | else |
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| 308 | { |
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| 309 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
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| 310 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 311 | "Invalid length G4Trap parameters."); |
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| 312 | } |
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| 313 | } |
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| 314 | |
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| 315 | /////////////////////////////////////////////////////////////////////////////// |
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| 316 | // |
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| 317 | // Constructor for G4Trd |
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| 318 | |
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| 319 | G4Trap::G4Trap( const G4String& pName, |
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| 320 | G4double pDx1, G4double pDx2, |
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| 321 | G4double pDy1, G4double pDy2, |
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| 322 | G4double pDz ) |
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| 323 | : G4CSGSolid(pName) |
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| 324 | { |
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| 325 | G4bool good; |
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| 326 | |
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| 327 | if ( pDz>0 && pDy1>0 && pDx1>0 && pDx2>0 && pDy2>0 ) |
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| 328 | { |
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| 329 | fDz = pDz; |
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| 330 | fTthetaCphi = 0 ; |
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| 331 | fTthetaSphi = 0 ; |
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| 332 | |
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| 333 | fDy1 = pDy1 ; |
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| 334 | fDx1 = pDx1 ; |
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| 335 | fDx2 = pDx1 ; |
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| 336 | fTalpha1 = 0 ; |
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| 337 | |
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| 338 | fDy2 = pDy2 ; |
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| 339 | fDx3 = pDx2 ; |
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| 340 | fDx4 = pDx2 ; |
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| 341 | fTalpha2 = 0 ; |
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| 342 | |
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| 343 | G4ThreeVector pt[8] ; |
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| 344 | |
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| 345 | pt[0]=G4ThreeVector(-fDz*fTthetaCphi-fDy1*fTalpha1-fDx1, |
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| 346 | -fDz*fTthetaSphi-fDy1,-fDz); |
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| 347 | pt[1]=G4ThreeVector(-fDz*fTthetaCphi-fDy1*fTalpha1+fDx1, |
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| 348 | -fDz*fTthetaSphi-fDy1,-fDz); |
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| 349 | pt[2]=G4ThreeVector(-fDz*fTthetaCphi+fDy1*fTalpha1-fDx2, |
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| 350 | -fDz*fTthetaSphi+fDy1,-fDz); |
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| 351 | pt[3]=G4ThreeVector(-fDz*fTthetaCphi+fDy1*fTalpha1+fDx2, |
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| 352 | -fDz*fTthetaSphi+fDy1,-fDz); |
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| 353 | pt[4]=G4ThreeVector(+fDz*fTthetaCphi-fDy2*fTalpha2-fDx3, |
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| 354 | +fDz*fTthetaSphi-fDy2,+fDz); |
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| 355 | pt[5]=G4ThreeVector(+fDz*fTthetaCphi-fDy2*fTalpha2+fDx3, |
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| 356 | +fDz*fTthetaSphi-fDy2,+fDz); |
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| 357 | pt[6]=G4ThreeVector(+fDz*fTthetaCphi+fDy2*fTalpha2-fDx4, |
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| 358 | +fDz*fTthetaSphi+fDy2,+fDz); |
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| 359 | pt[7]=G4ThreeVector(+fDz*fTthetaCphi+fDy2*fTalpha2+fDx4, |
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| 360 | +fDz*fTthetaSphi+fDy2,+fDz); |
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| 361 | |
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| 362 | // Bottom side with normal approx. -Y |
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| 363 | // |
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| 364 | good=MakePlane(pt[0],pt[4],pt[5],pt[1],fPlanes[0]); |
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| 365 | if (!good) |
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| 366 | { |
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| 367 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
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| 368 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 369 | "Face at ~-Y not planar."); |
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| 370 | } |
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| 371 | |
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| 372 | // Top side with normal approx. +Y |
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| 373 | // |
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| 374 | good=MakePlane(pt[2],pt[3],pt[7],pt[6],fPlanes[1]); |
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| 375 | if (!good) |
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| 376 | { |
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| 377 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
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| 378 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 379 | "Face at ~+Y not planar."); |
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| 380 | } |
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| 381 | |
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| 382 | // Front side with normal approx. -X |
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| 383 | // |
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| 384 | good=MakePlane(pt[0],pt[2],pt[6],pt[4],fPlanes[2]); |
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| 385 | if (!good) |
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| 386 | { |
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| 387 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
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| 388 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
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| 389 | "Face at ~-X not planar."); |
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| 390 | } |
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| 391 | |
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| 392 | // Back side iwth normal approx. +X |
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| 393 | // |
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| 394 | good=MakePlane(pt[1],pt[5],pt[7],pt[3],fPlanes[3]); |
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| 395 | if (!good) |
---|
| 396 | { |
---|
| 397 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
---|
| 398 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
---|
| 399 | "Face at ~+X not planar."); |
---|
| 400 | } |
---|
| 401 | } |
---|
| 402 | else |
---|
| 403 | { |
---|
| 404 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
---|
| 405 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
---|
| 406 | "Invalid length G4Trap parameters."); |
---|
| 407 | } |
---|
| 408 | } |
---|
| 409 | |
---|
| 410 | //////////////////////////////////////////////////////////////////////////// |
---|
| 411 | // |
---|
| 412 | // Constructor for G4Para |
---|
| 413 | |
---|
| 414 | G4Trap::G4Trap( const G4String& pName, |
---|
| 415 | G4double pDx, G4double pDy, |
---|
| 416 | G4double pDz, |
---|
| 417 | G4double pAlpha, |
---|
| 418 | G4double pTheta, G4double pPhi) |
---|
| 419 | : G4CSGSolid(pName) |
---|
| 420 | { |
---|
| 421 | G4bool good; |
---|
| 422 | |
---|
| 423 | if ( pDz>0 && pDy>0 && pDx>0 ) |
---|
| 424 | { |
---|
| 425 | fDz = pDz ; |
---|
| 426 | fTthetaCphi = std::tan(pTheta)*std::cos(pPhi) ; |
---|
| 427 | fTthetaSphi = std::tan(pTheta)*std::sin(pPhi) ; |
---|
| 428 | |
---|
| 429 | fDy1 = pDy ; |
---|
| 430 | fDx1 = pDx ; |
---|
| 431 | fDx2 = pDx ; |
---|
| 432 | fTalpha1 = std::tan(pAlpha) ; |
---|
| 433 | |
---|
| 434 | fDy2 = pDy ; |
---|
| 435 | fDx3 = pDx ; |
---|
| 436 | fDx4 = pDx ; |
---|
| 437 | fTalpha2 = fTalpha1 ; |
---|
| 438 | |
---|
| 439 | G4ThreeVector pt[8] ; |
---|
| 440 | |
---|
| 441 | pt[0]=G4ThreeVector(-fDz*fTthetaCphi-fDy1*fTalpha1-fDx1, |
---|
| 442 | -fDz*fTthetaSphi-fDy1,-fDz); |
---|
| 443 | pt[1]=G4ThreeVector(-fDz*fTthetaCphi-fDy1*fTalpha1+fDx1, |
---|
| 444 | -fDz*fTthetaSphi-fDy1,-fDz); |
---|
| 445 | pt[2]=G4ThreeVector(-fDz*fTthetaCphi+fDy1*fTalpha1-fDx2, |
---|
| 446 | -fDz*fTthetaSphi+fDy1,-fDz); |
---|
| 447 | pt[3]=G4ThreeVector(-fDz*fTthetaCphi+fDy1*fTalpha1+fDx2, |
---|
| 448 | -fDz*fTthetaSphi+fDy1,-fDz); |
---|
| 449 | pt[4]=G4ThreeVector(+fDz*fTthetaCphi-fDy2*fTalpha2-fDx3, |
---|
| 450 | +fDz*fTthetaSphi-fDy2,+fDz); |
---|
| 451 | pt[5]=G4ThreeVector(+fDz*fTthetaCphi-fDy2*fTalpha2+fDx3, |
---|
| 452 | +fDz*fTthetaSphi-fDy2,+fDz); |
---|
| 453 | pt[6]=G4ThreeVector(+fDz*fTthetaCphi+fDy2*fTalpha2-fDx4, |
---|
| 454 | +fDz*fTthetaSphi+fDy2,+fDz); |
---|
| 455 | pt[7]=G4ThreeVector(+fDz*fTthetaCphi+fDy2*fTalpha2+fDx4, |
---|
| 456 | +fDz*fTthetaSphi+fDy2,+fDz); |
---|
| 457 | |
---|
| 458 | // Bottom side with normal approx. -Y |
---|
| 459 | // |
---|
| 460 | good=MakePlane(pt[0],pt[4],pt[5],pt[1],fPlanes[0]); |
---|
| 461 | if (!good) |
---|
| 462 | { |
---|
| 463 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
---|
| 464 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
---|
| 465 | "Face at ~-Y not planar."); |
---|
| 466 | } |
---|
| 467 | |
---|
| 468 | // Top side with normal approx. +Y |
---|
| 469 | // |
---|
| 470 | good=MakePlane(pt[2],pt[3],pt[7],pt[6],fPlanes[1]); |
---|
| 471 | if (!good) |
---|
| 472 | { |
---|
| 473 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
---|
| 474 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
---|
| 475 | "Face at ~+Y not planar."); |
---|
| 476 | } |
---|
| 477 | |
---|
| 478 | // Front side with normal approx. -X |
---|
| 479 | // |
---|
| 480 | good=MakePlane(pt[0],pt[2],pt[6],pt[4],fPlanes[2]); |
---|
| 481 | if (!good) |
---|
| 482 | { |
---|
| 483 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
---|
| 484 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
---|
| 485 | "Face at ~-X not planar."); |
---|
| 486 | } |
---|
| 487 | |
---|
| 488 | // Back side iwth normal approx. +X |
---|
| 489 | // |
---|
| 490 | good=MakePlane(pt[1],pt[5],pt[7],pt[3],fPlanes[3]); |
---|
| 491 | if (!good) |
---|
| 492 | { |
---|
| 493 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
---|
| 494 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
---|
| 495 | "Face at ~+X not planar."); |
---|
| 496 | } |
---|
| 497 | } |
---|
| 498 | else |
---|
| 499 | { |
---|
| 500 | G4cerr << "ERROR - G4Trap()::G4Trap(): " << GetName() << G4endl; |
---|
| 501 | G4Exception("G4Trap::G4Trap()", "InvalidSetup", FatalException, |
---|
| 502 | "Invalid length G4Trap parameters."); |
---|
| 503 | } |
---|
| 504 | } |
---|
| 505 | |
---|
| 506 | /////////////////////////////////////////////////////////////////////////// |
---|
| 507 | // |
---|
| 508 | // Nominal constructor for G4Trap whose parameters are to be set by |
---|
| 509 | // a G4VParamaterisation later. Check and set half-widths as well as |
---|
| 510 | // angles: final check of coplanarity |
---|
| 511 | |
---|
| 512 | G4Trap::G4Trap( const G4String& pName ) |
---|
| 513 | : G4CSGSolid (pName), |
---|
| 514 | fDz (1.), |
---|
| 515 | fTthetaCphi (0.), |
---|
| 516 | fTthetaSphi (0.), |
---|
| 517 | fDy1 (1.), |
---|
| 518 | fDx1 (1.), |
---|
| 519 | fDx2 (1.), |
---|
| 520 | fTalpha1 (0.), |
---|
| 521 | fDy2 (1.), |
---|
| 522 | fDx3 (1.), |
---|
| 523 | fDx4 (1.), |
---|
| 524 | fTalpha2 (0.) |
---|
| 525 | { |
---|
| 526 | MakePlanes(); |
---|
| 527 | } |
---|
| 528 | |
---|
| 529 | /////////////////////////////////////////////////////////////////////// |
---|
| 530 | // |
---|
| 531 | // Fake default constructor - sets only member data and allocates memory |
---|
| 532 | // for usage restricted to object persistency. |
---|
| 533 | // |
---|
| 534 | G4Trap::G4Trap( __void__& a ) |
---|
| 535 | : G4CSGSolid(a) |
---|
| 536 | { |
---|
| 537 | } |
---|
| 538 | |
---|
| 539 | //////////////////////////////////////////////////////////////////////// |
---|
| 540 | // |
---|
| 541 | // Destructor |
---|
| 542 | |
---|
| 543 | G4Trap::~G4Trap() |
---|
| 544 | { |
---|
| 545 | } |
---|
| 546 | |
---|
| 547 | /////////////////////////////////////////////////////////////////////// |
---|
| 548 | // |
---|
| 549 | // Set all parameters, as for constructor - check and set half-widths |
---|
| 550 | // as well as angles: final check of coplanarity |
---|
| 551 | |
---|
| 552 | void G4Trap::SetAllParameters ( G4double pDz, |
---|
| 553 | G4double pTheta, |
---|
| 554 | G4double pPhi, |
---|
| 555 | G4double pDy1, |
---|
| 556 | G4double pDx1, |
---|
| 557 | G4double pDx2, |
---|
| 558 | G4double pAlp1, |
---|
| 559 | G4double pDy2, |
---|
| 560 | G4double pDx3, |
---|
| 561 | G4double pDx4, |
---|
| 562 | G4double pAlp2 ) |
---|
| 563 | { |
---|
| 564 | fCubicVolume= 0.; |
---|
| 565 | fSurfaceArea= 0.; |
---|
| 566 | fpPolyhedron = 0; |
---|
| 567 | if ( pDz>0 && pDy1>0 && pDx1>0 && pDx2>0 && pDy2>0 && pDx3>0 && pDx4>0 ) |
---|
| 568 | { |
---|
| 569 | fDz=pDz; |
---|
| 570 | fTthetaCphi=std::tan(pTheta)*std::cos(pPhi); |
---|
| 571 | fTthetaSphi=std::tan(pTheta)*std::sin(pPhi); |
---|
| 572 | |
---|
| 573 | fDy1=pDy1; |
---|
| 574 | fDx1=pDx1; |
---|
| 575 | fDx2=pDx2; |
---|
| 576 | fTalpha1=std::tan(pAlp1); |
---|
| 577 | |
---|
| 578 | fDy2=pDy2; |
---|
| 579 | fDx3=pDx3; |
---|
| 580 | fDx4=pDx4; |
---|
| 581 | fTalpha2=std::tan(pAlp2); |
---|
| 582 | |
---|
| 583 | MakePlanes(); |
---|
| 584 | } |
---|
| 585 | else |
---|
| 586 | { |
---|
| 587 | G4cerr << "ERROR - G4Trap()::SetAllParameters(): " << GetName() << G4endl |
---|
| 588 | << " Invalid dimensions !" << G4endl |
---|
| 589 | << " X - " |
---|
| 590 | << pDx1 << ", " << pDx2 << ", " << pDx3 << ", " << pDx4 << G4endl |
---|
| 591 | << " Y - " << pDy1 << ", " << pDy2 << G4endl |
---|
| 592 | << " Z - " << pDz << G4endl; |
---|
| 593 | G4Exception("G4Trap::SetAllParameters()", "InvalidSetup", |
---|
| 594 | FatalException, "Invalid Length Parameters."); |
---|
| 595 | } |
---|
| 596 | } |
---|
| 597 | |
---|
| 598 | ////////////////////////////////////////////////////////////////////////// |
---|
| 599 | // |
---|
| 600 | // Checking of coplanarity |
---|
| 601 | |
---|
| 602 | G4bool G4Trap::MakePlanes() |
---|
| 603 | { |
---|
| 604 | G4bool good = true; |
---|
| 605 | |
---|
| 606 | G4ThreeVector pt[8] ; |
---|
| 607 | |
---|
| 608 | pt[0]=G4ThreeVector(-fDz*fTthetaCphi-fDy1*fTalpha1-fDx1, |
---|
| 609 | -fDz*fTthetaSphi-fDy1,-fDz); |
---|
| 610 | pt[1]=G4ThreeVector(-fDz*fTthetaCphi-fDy1*fTalpha1+fDx1, |
---|
| 611 | -fDz*fTthetaSphi-fDy1,-fDz); |
---|
| 612 | pt[2]=G4ThreeVector(-fDz*fTthetaCphi+fDy1*fTalpha1-fDx2, |
---|
| 613 | -fDz*fTthetaSphi+fDy1,-fDz); |
---|
| 614 | pt[3]=G4ThreeVector(-fDz*fTthetaCphi+fDy1*fTalpha1+fDx2, |
---|
| 615 | -fDz*fTthetaSphi+fDy1,-fDz); |
---|
| 616 | pt[4]=G4ThreeVector(+fDz*fTthetaCphi-fDy2*fTalpha2-fDx3, |
---|
| 617 | +fDz*fTthetaSphi-fDy2,+fDz); |
---|
| 618 | pt[5]=G4ThreeVector(+fDz*fTthetaCphi-fDy2*fTalpha2+fDx3, |
---|
| 619 | +fDz*fTthetaSphi-fDy2,+fDz); |
---|
| 620 | pt[6]=G4ThreeVector(+fDz*fTthetaCphi+fDy2*fTalpha2-fDx4, |
---|
| 621 | +fDz*fTthetaSphi+fDy2,+fDz); |
---|
| 622 | pt[7]=G4ThreeVector(+fDz*fTthetaCphi+fDy2*fTalpha2+fDx4, |
---|
| 623 | +fDz*fTthetaSphi+fDy2,+fDz); |
---|
| 624 | |
---|
| 625 | // Bottom side with normal approx. -Y |
---|
| 626 | // |
---|
| 627 | good=MakePlane(pt[0],pt[4],pt[5],pt[1],fPlanes[0]) ; |
---|
| 628 | if (!good) |
---|
| 629 | { |
---|
| 630 | G4cerr << "ERROR - G4Trap()::MakePlanes(): " << GetName() << G4endl; |
---|
| 631 | G4Exception("G4Trap::MakePlanes()", "InvalidSetup", FatalException, |
---|
| 632 | "Face at ~-Y not planar."); |
---|
| 633 | } |
---|
| 634 | |
---|
| 635 | // Top side with normal approx. +Y |
---|
| 636 | // |
---|
| 637 | good=MakePlane(pt[2],pt[3],pt[7],pt[6],fPlanes[1]); |
---|
| 638 | if (!good) |
---|
| 639 | { |
---|
| 640 | G4cerr << "ERROR - G4Trap()::MakePlanes(): " << GetName() << G4endl; |
---|
| 641 | G4Exception("G4Trap::MakePlanes()", "InvalidSetup", FatalException, |
---|
| 642 | "Face at ~+Y not planar."); |
---|
| 643 | } |
---|
| 644 | |
---|
| 645 | // Front side with normal approx. -X |
---|
| 646 | // |
---|
| 647 | good=MakePlane(pt[0],pt[2],pt[6],pt[4],fPlanes[2]); |
---|
| 648 | if (!good) |
---|
| 649 | { |
---|
| 650 | G4cerr << "ERROR - G4Trap()::MakePlanes(): " << GetName() << G4endl; |
---|
| 651 | G4Exception("G4Trap::MakePlanes()", "InvalidSetup", FatalException, |
---|
| 652 | "Face at ~-X not planar."); |
---|
| 653 | } |
---|
| 654 | |
---|
| 655 | // Back side iwth normal approx. +X |
---|
| 656 | // |
---|
| 657 | good = MakePlane(pt[1],pt[5],pt[7],pt[3],fPlanes[3]); |
---|
| 658 | if ( !good ) |
---|
| 659 | { |
---|
| 660 | G4cerr << "ERROR - G4Trap()::MakePlanes(): " << GetName() << G4endl; |
---|
| 661 | G4Exception("G4Trap::MakePlanes()", "InvalidSetup", FatalException, |
---|
| 662 | "Face at ~+X not planar"); |
---|
| 663 | } |
---|
| 664 | |
---|
| 665 | return good; |
---|
| 666 | } |
---|
| 667 | |
---|
| 668 | ////////////////////////////////////////////////////////////////////////////// |
---|
| 669 | // |
---|
| 670 | // Calculate the coef's of the plane p1->p2->p3->p4->p1 |
---|
| 671 | // where the ThreeVectors 1-4 are in anti-clockwise order when viewed from |
---|
| 672 | // infront of the plane (i.e. from normal direction). |
---|
| 673 | // |
---|
| 674 | // Return true if the ThreeVectors are coplanar + set coef;s |
---|
| 675 | // false if ThreeVectors are not coplanar |
---|
| 676 | |
---|
| 677 | G4bool G4Trap::MakePlane( const G4ThreeVector& p1, |
---|
| 678 | const G4ThreeVector& p2, |
---|
| 679 | const G4ThreeVector& p3, |
---|
| 680 | const G4ThreeVector& p4, |
---|
| 681 | TrapSidePlane& plane ) |
---|
| 682 | { |
---|
| 683 | G4double a, b, c, s; |
---|
| 684 | G4ThreeVector v12, v13, v14, Vcross; |
---|
| 685 | |
---|
| 686 | G4bool good; |
---|
| 687 | |
---|
| 688 | v12 = p2 - p1; |
---|
| 689 | v13 = p3 - p1; |
---|
| 690 | v14 = p4 - p1; |
---|
| 691 | Vcross = v12.cross(v13); |
---|
| 692 | |
---|
| 693 | if (std::fabs(Vcross.dot(v14)/(Vcross.mag()*v14.mag())) > kCoplanar_Tolerance) |
---|
| 694 | { |
---|
| 695 | good = false; |
---|
| 696 | } |
---|
| 697 | else |
---|
| 698 | { |
---|
| 699 | // a,b,c correspond to the x/y/z components of the |
---|
| 700 | // normal vector to the plane |
---|
| 701 | |
---|
| 702 | // a = (p2.y()-p1.y())*(p1.z()+p2.z())+(p3.y()-p2.y())*(p2.z()+p3.z()); |
---|
| 703 | // a += (p4.y()-p3.y())*(p3.z()+p4.z())+(p1.y()-p4.y())*(p4.z()+p1.z()); // ? |
---|
| 704 | // b = (p2.z()-p1.z())*(p1.x()+p2.x())+(p3.z()-p2.z())*(p2.x()+p3.x()); |
---|
| 705 | // b += (p4.z()-p3.z())*(p3.x()+p4.x())+(p1.z()-p4.z())*(p4.x()+p1.x()); // ? |
---|
| 706 | // c = (p2.x()-p1.x())*(p1.y()+p2.y())+(p3.x()-p2.x())*(p2.y()+p3.y()); |
---|
| 707 | // c += (p4.x()-p3.x())*(p3.y()+p4.y())+(p1.x()-p4.x())*(p4.y()+p1.y()); // ? |
---|
| 708 | |
---|
| 709 | // Let create diagonals 4-2 and 3-1 than (4-2)x(3-1) provides |
---|
| 710 | // vector perpendicular to the plane directed to outside !!! |
---|
| 711 | // and a,b,c, = f(1,2,3,4) external relative to trap normal |
---|
| 712 | |
---|
| 713 | a = +(p4.y() - p2.y())*(p3.z() - p1.z()) |
---|
| 714 | - (p3.y() - p1.y())*(p4.z() - p2.z()); |
---|
| 715 | |
---|
| 716 | b = -(p4.x() - p2.x())*(p3.z() - p1.z()) |
---|
| 717 | + (p3.x() - p1.x())*(p4.z() - p2.z()); |
---|
| 718 | |
---|
| 719 | c = +(p4.x() - p2.x())*(p3.y() - p1.y()) |
---|
| 720 | - (p3.x() - p1.x())*(p4.y() - p2.y()); |
---|
| 721 | |
---|
| 722 | s = std::sqrt( a*a + b*b + c*c ); // so now vector plane.(a,b,c) is unit |
---|
| 723 | |
---|
| 724 | if( s > 0 ) |
---|
| 725 | { |
---|
| 726 | plane.a = a/s; |
---|
| 727 | plane.b = b/s; |
---|
| 728 | plane.c = c/s; |
---|
| 729 | } |
---|
| 730 | else |
---|
| 731 | { |
---|
| 732 | G4cerr << "ERROR - G4Trap()::MakePlane(): " << GetName() << G4endl; |
---|
| 733 | G4Exception("G4Trap::MakePlanes()", "InvalidSetup", FatalException, |
---|
| 734 | "Invalid parameters: norm.mod() <= 0") ; |
---|
| 735 | } |
---|
| 736 | // Calculate D: p1 in in plane so D=-n.p1.Vect() |
---|
| 737 | |
---|
| 738 | plane.d = -( plane.a*p1.x() + plane.b*p1.y() + plane.c*p1.z() ); |
---|
| 739 | |
---|
| 740 | good = true; |
---|
| 741 | } |
---|
| 742 | return good; |
---|
| 743 | } |
---|
| 744 | |
---|
| 745 | ////////////////////////////////////////////////////////////////////////////// |
---|
| 746 | // |
---|
| 747 | // Dispatch to parameterisation for replication mechanism dimension |
---|
| 748 | // computation & modification. |
---|
| 749 | |
---|
| 750 | void G4Trap::ComputeDimensions( G4VPVParameterisation* p, |
---|
| 751 | const G4int n, |
---|
| 752 | const G4VPhysicalVolume* pRep ) |
---|
| 753 | { |
---|
| 754 | p->ComputeDimensions(*this,n,pRep); |
---|
| 755 | } |
---|
| 756 | |
---|
| 757 | |
---|
| 758 | //////////////////////////////////////////////////////////////////////// |
---|
| 759 | // |
---|
| 760 | // Calculate extent under transform and specified limit |
---|
| 761 | |
---|
| 762 | G4bool G4Trap::CalculateExtent( const EAxis pAxis, |
---|
| 763 | const G4VoxelLimits& pVoxelLimit, |
---|
| 764 | const G4AffineTransform& pTransform, |
---|
| 765 | G4double& pMin, G4double& pMax) const |
---|
| 766 | { |
---|
| 767 | G4double xMin, xMax, yMin, yMax, zMin, zMax; |
---|
| 768 | G4bool flag; |
---|
| 769 | |
---|
| 770 | if (!pTransform.IsRotated()) |
---|
| 771 | { |
---|
| 772 | // Special case handling for unrotated trapezoids |
---|
| 773 | // Compute z/x/y/ mins and maxs respecting limits, with early returns |
---|
| 774 | // if outside limits. Then switch() on pAxis |
---|
| 775 | |
---|
| 776 | G4int i ; |
---|
| 777 | G4double xoffset; |
---|
| 778 | G4double yoffset; |
---|
| 779 | G4double zoffset; |
---|
| 780 | G4double temp[8] ; // some points for intersection with zMin/zMax |
---|
| 781 | G4ThreeVector pt[8]; // vertices after translation |
---|
| 782 | |
---|
| 783 | xoffset=pTransform.NetTranslation().x(); |
---|
| 784 | yoffset=pTransform.NetTranslation().y(); |
---|
| 785 | zoffset=pTransform.NetTranslation().z(); |
---|
| 786 | |
---|
| 787 | pt[0]=G4ThreeVector(xoffset-fDz*fTthetaCphi-fDy1*fTalpha1-fDx1, |
---|
| 788 | yoffset-fDz*fTthetaSphi-fDy1,zoffset-fDz); |
---|
| 789 | pt[1]=G4ThreeVector(xoffset-fDz*fTthetaCphi-fDy1*fTalpha1+fDx1, |
---|
| 790 | yoffset-fDz*fTthetaSphi-fDy1,zoffset-fDz); |
---|
| 791 | pt[2]=G4ThreeVector(xoffset-fDz*fTthetaCphi+fDy1*fTalpha1-fDx2, |
---|
| 792 | yoffset-fDz*fTthetaSphi+fDy1,zoffset-fDz); |
---|
| 793 | pt[3]=G4ThreeVector(xoffset-fDz*fTthetaCphi+fDy1*fTalpha1+fDx2, |
---|
| 794 | yoffset-fDz*fTthetaSphi+fDy1,zoffset-fDz); |
---|
| 795 | pt[4]=G4ThreeVector(xoffset+fDz*fTthetaCphi-fDy2*fTalpha2-fDx3, |
---|
| 796 | yoffset+fDz*fTthetaSphi-fDy2,zoffset+fDz); |
---|
| 797 | pt[5]=G4ThreeVector(xoffset+fDz*fTthetaCphi-fDy2*fTalpha2+fDx3, |
---|
| 798 | yoffset+fDz*fTthetaSphi-fDy2,zoffset+fDz); |
---|
| 799 | pt[6]=G4ThreeVector(xoffset+fDz*fTthetaCphi+fDy2*fTalpha2-fDx4, |
---|
| 800 | yoffset+fDz*fTthetaSphi+fDy2,zoffset+fDz); |
---|
| 801 | pt[7]=G4ThreeVector(xoffset+fDz*fTthetaCphi+fDy2*fTalpha2+fDx4, |
---|
| 802 | yoffset+fDz*fTthetaSphi+fDy2,zoffset+fDz); |
---|
| 803 | zMin=zoffset-fDz; |
---|
| 804 | zMax=zoffset+fDz; |
---|
| 805 | |
---|
| 806 | if ( pVoxelLimit.IsZLimited() ) |
---|
| 807 | { |
---|
| 808 | if ( (zMin > pVoxelLimit.GetMaxZExtent() + kCarTolerance) |
---|
| 809 | || (zMax < pVoxelLimit.GetMinZExtent() - kCarTolerance) ) |
---|
| 810 | { |
---|
| 811 | return false; |
---|
| 812 | } |
---|
| 813 | else |
---|
| 814 | { |
---|
| 815 | if ( zMin < pVoxelLimit.GetMinZExtent() ) |
---|
| 816 | { |
---|
| 817 | zMin = pVoxelLimit.GetMinZExtent() ; |
---|
| 818 | } |
---|
| 819 | if ( zMax > pVoxelLimit.GetMaxZExtent() ) |
---|
| 820 | { |
---|
| 821 | zMax = pVoxelLimit.GetMaxZExtent() ; |
---|
| 822 | } |
---|
| 823 | } |
---|
| 824 | } |
---|
| 825 | temp[0] = pt[0].y()+(pt[4].y()-pt[0].y())*(zMin-pt[0].z()) |
---|
| 826 | /(pt[4].z()-pt[0].z()) ; |
---|
| 827 | temp[1] = pt[0].y()+(pt[4].y()-pt[0].y())*(zMax-pt[0].z()) |
---|
| 828 | /(pt[4].z()-pt[0].z()) ; |
---|
| 829 | temp[2] = pt[2].y()+(pt[6].y()-pt[2].y())*(zMin-pt[2].z()) |
---|
| 830 | /(pt[6].z()-pt[2].z()) ; |
---|
| 831 | temp[3] = pt[2].y()+(pt[6].y()-pt[2].y())*(zMax-pt[2].z()) |
---|
| 832 | /(pt[6].z()-pt[2].z()) ; |
---|
| 833 | |
---|
| 834 | yMax = yoffset - std::fabs(fDz*fTthetaSphi) - fDy1 - fDy2 ; |
---|
| 835 | yMin = -yMax ; |
---|
| 836 | |
---|
| 837 | for( i = 0 ; i < 4 ; i++ ) |
---|
| 838 | { |
---|
| 839 | if( temp[i] > yMax ) yMax = temp[i] ; |
---|
| 840 | if( temp[i] < yMin ) yMin = temp[i] ; |
---|
| 841 | } |
---|
| 842 | if ( pVoxelLimit.IsYLimited() ) |
---|
| 843 | { |
---|
| 844 | if ( (yMin > pVoxelLimit.GetMaxYExtent() + kCarTolerance) |
---|
| 845 | || (yMax < pVoxelLimit.GetMinYExtent() - kCarTolerance) ) |
---|
| 846 | { |
---|
| 847 | return false; |
---|
| 848 | } |
---|
| 849 | else |
---|
| 850 | { |
---|
| 851 | if ( yMin < pVoxelLimit.GetMinYExtent() ) |
---|
| 852 | { |
---|
| 853 | yMin = pVoxelLimit.GetMinYExtent() ; |
---|
| 854 | } |
---|
| 855 | if ( yMax > pVoxelLimit.GetMaxYExtent() ) |
---|
| 856 | { |
---|
| 857 | yMax = pVoxelLimit.GetMaxYExtent() ; |
---|
| 858 | } |
---|
| 859 | } |
---|
| 860 | } |
---|
| 861 | temp[0] = pt[0].x()+(pt[4].x()-pt[0].x()) |
---|
| 862 | *(zMin-pt[0].z())/(pt[4].z()-pt[0].z()) ; |
---|
| 863 | temp[1] = pt[0].x()+(pt[4].x()-pt[0].x()) |
---|
| 864 | *(zMax-pt[0].z())/(pt[4].z()-pt[0].z()) ; |
---|
| 865 | temp[2] = pt[2].x()+(pt[6].x()-pt[2].x()) |
---|
| 866 | *(zMin-pt[2].z())/(pt[6].z()-pt[2].z()) ; |
---|
| 867 | temp[3] = pt[2].x()+(pt[6].x()-pt[2].x()) |
---|
| 868 | *(zMax-pt[2].z())/(pt[6].z()-pt[2].z()) ; |
---|
| 869 | temp[4] = pt[3].x()+(pt[7].x()-pt[3].x()) |
---|
| 870 | *(zMin-pt[3].z())/(pt[7].z()-pt[3].z()) ; |
---|
| 871 | temp[5] = pt[3].x()+(pt[7].x()-pt[3].x()) |
---|
| 872 | *(zMax-pt[3].z())/(pt[7].z()-pt[3].z()) ; |
---|
| 873 | temp[6] = pt[1].x()+(pt[5].x()-pt[1].x()) |
---|
| 874 | *(zMin-pt[1].z())/(pt[5].z()-pt[1].z()) ; |
---|
| 875 | temp[7] = pt[1].x()+(pt[5].x()-pt[1].x()) |
---|
| 876 | *(zMax-pt[1].z())/(pt[5].z()-pt[1].z()) ; |
---|
| 877 | |
---|
| 878 | xMax = xoffset - std::fabs(fDz*fTthetaCphi) - fDx1 - fDx2 -fDx3 - fDx4 ; |
---|
| 879 | xMin = -xMax ; |
---|
| 880 | |
---|
| 881 | for( i = 0 ; i < 8 ; i++ ) |
---|
| 882 | { |
---|
| 883 | if( temp[i] > xMax) xMax = temp[i] ; |
---|
| 884 | if( temp[i] < xMin) xMin = temp[i] ; |
---|
| 885 | } |
---|
| 886 | if (pVoxelLimit.IsXLimited()) // xMax/Min = f(yMax/Min) ? |
---|
| 887 | { |
---|
| 888 | if ( (xMin > pVoxelLimit.GetMaxXExtent() + kCarTolerance) |
---|
| 889 | || (xMax < pVoxelLimit.GetMinXExtent() - kCarTolerance) ) |
---|
| 890 | { |
---|
| 891 | return false; |
---|
| 892 | } |
---|
| 893 | else |
---|
| 894 | { |
---|
| 895 | if ( xMin < pVoxelLimit.GetMinXExtent() ) |
---|
| 896 | { |
---|
| 897 | xMin = pVoxelLimit.GetMinXExtent() ; |
---|
| 898 | } |
---|
| 899 | if ( xMax > pVoxelLimit.GetMaxXExtent() ) |
---|
| 900 | { |
---|
| 901 | xMax = pVoxelLimit.GetMaxXExtent() ; |
---|
| 902 | } |
---|
| 903 | } |
---|
| 904 | } |
---|
| 905 | switch (pAxis) |
---|
| 906 | { |
---|
| 907 | case kXAxis: |
---|
| 908 | pMin=xMin; |
---|
| 909 | pMax=xMax; |
---|
| 910 | break; |
---|
| 911 | |
---|
| 912 | case kYAxis: |
---|
| 913 | pMin=yMin; |
---|
| 914 | pMax=yMax; |
---|
| 915 | break; |
---|
| 916 | |
---|
| 917 | case kZAxis: |
---|
| 918 | pMin=zMin; |
---|
| 919 | pMax=zMax; |
---|
| 920 | break; |
---|
| 921 | |
---|
| 922 | default: |
---|
| 923 | break; |
---|
| 924 | } |
---|
| 925 | pMin -= kCarTolerance; |
---|
| 926 | pMax += kCarTolerance; |
---|
| 927 | |
---|
| 928 | flag = true; |
---|
| 929 | } |
---|
| 930 | else // General rotated case - |
---|
| 931 | { |
---|
| 932 | G4bool existsAfterClip = false ; |
---|
| 933 | G4ThreeVectorList* vertices; |
---|
| 934 | pMin = +kInfinity; |
---|
| 935 | pMax = -kInfinity; |
---|
| 936 | |
---|
| 937 | // Calculate rotated vertex coordinates. Operator 'new' is called |
---|
| 938 | |
---|
| 939 | vertices = CreateRotatedVertices(pTransform); |
---|
| 940 | |
---|
| 941 | xMin = +kInfinity; yMin = +kInfinity; zMin = +kInfinity; |
---|
| 942 | xMax = -kInfinity; yMax = -kInfinity; zMax = -kInfinity; |
---|
| 943 | |
---|
| 944 | for( G4int nv = 0 ; nv < 8 ; nv++ ) |
---|
| 945 | { |
---|
| 946 | if( (*vertices)[nv].x() > xMax ) xMax = (*vertices)[nv].x(); |
---|
| 947 | if( (*vertices)[nv].y() > yMax ) yMax = (*vertices)[nv].y(); |
---|
| 948 | if( (*vertices)[nv].z() > zMax ) zMax = (*vertices)[nv].z(); |
---|
| 949 | |
---|
| 950 | if( (*vertices)[nv].x() < xMin ) xMin = (*vertices)[nv].x(); |
---|
| 951 | if( (*vertices)[nv].y() < yMin ) yMin = (*vertices)[nv].y(); |
---|
| 952 | if( (*vertices)[nv].z() < zMin ) zMin = (*vertices)[nv].z(); |
---|
| 953 | } |
---|
| 954 | if ( pVoxelLimit.IsZLimited() ) |
---|
| 955 | { |
---|
| 956 | if ( (zMin > pVoxelLimit.GetMaxZExtent() + kCarTolerance) |
---|
| 957 | || (zMax < pVoxelLimit.GetMinZExtent() - kCarTolerance) ) |
---|
| 958 | { |
---|
| 959 | delete vertices ; // 'new' in the function called |
---|
| 960 | return false; |
---|
| 961 | } |
---|
| 962 | else |
---|
| 963 | { |
---|
| 964 | if ( zMin < pVoxelLimit.GetMinZExtent() ) |
---|
| 965 | { |
---|
| 966 | zMin = pVoxelLimit.GetMinZExtent() ; |
---|
| 967 | } |
---|
| 968 | if ( zMax > pVoxelLimit.GetMaxZExtent() ) |
---|
| 969 | { |
---|
| 970 | zMax = pVoxelLimit.GetMaxZExtent() ; |
---|
| 971 | } |
---|
| 972 | } |
---|
| 973 | } |
---|
| 974 | if ( pVoxelLimit.IsYLimited() ) |
---|
| 975 | { |
---|
| 976 | if ( (yMin > pVoxelLimit.GetMaxYExtent() + kCarTolerance) |
---|
| 977 | || (yMax < pVoxelLimit.GetMinYExtent() - kCarTolerance) ) |
---|
| 978 | { |
---|
| 979 | delete vertices ; // 'new' in the function called |
---|
| 980 | return false; |
---|
| 981 | } |
---|
| 982 | else |
---|
| 983 | { |
---|
| 984 | if ( yMin < pVoxelLimit.GetMinYExtent() ) |
---|
| 985 | { |
---|
| 986 | yMin = pVoxelLimit.GetMinYExtent() ; |
---|
| 987 | } |
---|
| 988 | if ( yMax > pVoxelLimit.GetMaxYExtent() ) |
---|
| 989 | { |
---|
| 990 | yMax = pVoxelLimit.GetMaxYExtent() ; |
---|
| 991 | } |
---|
| 992 | } |
---|
| 993 | } |
---|
| 994 | if ( pVoxelLimit.IsXLimited() ) |
---|
| 995 | { |
---|
| 996 | if ( (xMin > pVoxelLimit.GetMaxXExtent() + kCarTolerance) |
---|
| 997 | || (xMax < pVoxelLimit.GetMinXExtent() - kCarTolerance) ) |
---|
| 998 | { |
---|
| 999 | delete vertices ; // 'new' in the function called |
---|
| 1000 | return false ; |
---|
| 1001 | } |
---|
| 1002 | else |
---|
| 1003 | { |
---|
| 1004 | if ( xMin < pVoxelLimit.GetMinXExtent() ) |
---|
| 1005 | { |
---|
| 1006 | xMin = pVoxelLimit.GetMinXExtent() ; |
---|
| 1007 | } |
---|
| 1008 | if ( xMax > pVoxelLimit.GetMaxXExtent() ) |
---|
| 1009 | { |
---|
| 1010 | xMax = pVoxelLimit.GetMaxXExtent() ; |
---|
| 1011 | } |
---|
| 1012 | } |
---|
| 1013 | } |
---|
| 1014 | switch (pAxis) |
---|
| 1015 | { |
---|
| 1016 | case kXAxis: |
---|
| 1017 | pMin=xMin; |
---|
| 1018 | pMax=xMax; |
---|
| 1019 | break; |
---|
| 1020 | |
---|
| 1021 | case kYAxis: |
---|
| 1022 | pMin=yMin; |
---|
| 1023 | pMax=yMax; |
---|
| 1024 | break; |
---|
| 1025 | |
---|
| 1026 | case kZAxis: |
---|
| 1027 | pMin=zMin; |
---|
| 1028 | pMax=zMax; |
---|
| 1029 | break; |
---|
| 1030 | |
---|
| 1031 | default: |
---|
| 1032 | break; |
---|
| 1033 | } |
---|
| 1034 | if ( (pMin != kInfinity) || (pMax != -kInfinity) ) |
---|
| 1035 | { |
---|
| 1036 | existsAfterClip=true; |
---|
| 1037 | |
---|
| 1038 | // Add tolerance to avoid precision troubles |
---|
| 1039 | // |
---|
| 1040 | pMin -= kCarTolerance ; |
---|
| 1041 | pMax += kCarTolerance ; |
---|
| 1042 | } |
---|
| 1043 | delete vertices ; // 'new' in the function called |
---|
| 1044 | flag = existsAfterClip ; |
---|
| 1045 | } |
---|
| 1046 | return flag; |
---|
| 1047 | } |
---|
| 1048 | |
---|
| 1049 | |
---|
| 1050 | //////////////////////////////////////////////////////////////////////// |
---|
| 1051 | // |
---|
| 1052 | // Return whether point inside/outside/on surface, using tolerance |
---|
| 1053 | |
---|
| 1054 | EInside G4Trap::Inside( const G4ThreeVector& p ) const |
---|
| 1055 | { |
---|
| 1056 | EInside in; |
---|
| 1057 | G4double Dist; |
---|
| 1058 | G4int i; |
---|
| 1059 | if ( std::fabs(p.z()) <= fDz-kCarTolerance*0.5) |
---|
| 1060 | { |
---|
| 1061 | in = kInside; |
---|
| 1062 | |
---|
| 1063 | for ( i = 0;i < 4;i++ ) |
---|
| 1064 | { |
---|
| 1065 | Dist = fPlanes[i].a*p.x() + fPlanes[i].b*p.y() |
---|
| 1066 | +fPlanes[i].c*p.z() + fPlanes[i].d; |
---|
| 1067 | |
---|
| 1068 | if (Dist > kCarTolerance*0.5) return in = kOutside; |
---|
| 1069 | else if (Dist > -kCarTolerance*0.5) in = kSurface; |
---|
| 1070 | |
---|
| 1071 | } |
---|
| 1072 | } |
---|
| 1073 | else if (std::fabs(p.z()) <= fDz+kCarTolerance*0.5) |
---|
| 1074 | { |
---|
| 1075 | in = kSurface; |
---|
| 1076 | |
---|
| 1077 | for ( i = 0; i < 4; i++ ) |
---|
| 1078 | { |
---|
| 1079 | Dist = fPlanes[i].a*p.x() + fPlanes[i].b*p.y() |
---|
| 1080 | +fPlanes[i].c*p.z() + fPlanes[i].d; |
---|
| 1081 | |
---|
| 1082 | if (Dist > kCarTolerance*0.5) return in = kOutside; |
---|
| 1083 | } |
---|
| 1084 | } |
---|
| 1085 | else in = kOutside; |
---|
| 1086 | |
---|
| 1087 | return in; |
---|
| 1088 | } |
---|
| 1089 | |
---|
| 1090 | ///////////////////////////////////////////////////////////////////////////// |
---|
| 1091 | // |
---|
| 1092 | // Calculate side nearest to p, and return normal |
---|
| 1093 | // If 2+ sides equidistant, first side's normal returned (arbitrarily) |
---|
| 1094 | |
---|
| 1095 | G4ThreeVector G4Trap::SurfaceNormal( const G4ThreeVector& p ) const |
---|
| 1096 | { |
---|
| 1097 | G4int i, imin = 0, noSurfaces = 0; |
---|
| 1098 | G4double dist, distz, distx, disty, distmx, distmy, safe = kInfinity; |
---|
| 1099 | G4double delta = 0.5*kCarTolerance; |
---|
| 1100 | G4ThreeVector norm, sumnorm(0.,0.,0.); |
---|
| 1101 | |
---|
| 1102 | for (i = 0; i < 4; i++) |
---|
| 1103 | { |
---|
| 1104 | dist = std::fabs(fPlanes[i].a*p.x() + fPlanes[i].b*p.y() |
---|
| 1105 | + fPlanes[i].c*p.z() + fPlanes[i].d); |
---|
| 1106 | if ( dist < safe ) |
---|
| 1107 | { |
---|
| 1108 | safe = dist; |
---|
| 1109 | imin = i; |
---|
| 1110 | } |
---|
| 1111 | } |
---|
| 1112 | distz = std::fabs( std::fabs( p.z() ) - fDz ); |
---|
| 1113 | |
---|
| 1114 | distmy = std::fabs( fPlanes[0].a*p.x() + fPlanes[0].b*p.y() |
---|
| 1115 | + fPlanes[0].c*p.z() + fPlanes[0].d ); |
---|
| 1116 | |
---|
| 1117 | disty = std::fabs( fPlanes[1].a*p.x() + fPlanes[1].b*p.y() |
---|
| 1118 | + fPlanes[1].c*p.z() + fPlanes[1].d ); |
---|
| 1119 | |
---|
| 1120 | distmx = std::fabs( fPlanes[2].a*p.x() + fPlanes[2].b*p.y() |
---|
| 1121 | + fPlanes[2].c*p.z() + fPlanes[2].d ); |
---|
| 1122 | |
---|
| 1123 | distx = std::fabs( fPlanes[3].a*p.x() + fPlanes[3].b*p.y() |
---|
| 1124 | + fPlanes[3].c*p.z() + fPlanes[3].d ); |
---|
| 1125 | |
---|
| 1126 | G4ThreeVector nX = G4ThreeVector(fPlanes[3].a,fPlanes[3].b,fPlanes[3].c); |
---|
| 1127 | G4ThreeVector nmX = G4ThreeVector(fPlanes[2].a,fPlanes[2].b,fPlanes[2].c); |
---|
| 1128 | G4ThreeVector nY = G4ThreeVector(fPlanes[1].a,fPlanes[1].b,fPlanes[1].c); |
---|
| 1129 | G4ThreeVector nmY = G4ThreeVector(fPlanes[0].a,fPlanes[0].b,fPlanes[0].c); |
---|
| 1130 | G4ThreeVector nZ = G4ThreeVector(0.,0.,1.0); |
---|
| 1131 | |
---|
| 1132 | if (distx <= delta) |
---|
| 1133 | { |
---|
| 1134 | noSurfaces ++; |
---|
| 1135 | sumnorm += nX; |
---|
| 1136 | } |
---|
| 1137 | if (distmx <= delta) |
---|
| 1138 | { |
---|
| 1139 | noSurfaces ++; |
---|
| 1140 | sumnorm += nmX; |
---|
| 1141 | } |
---|
| 1142 | if (disty <= delta) |
---|
| 1143 | { |
---|
| 1144 | noSurfaces ++; |
---|
| 1145 | sumnorm += nY; |
---|
| 1146 | } |
---|
| 1147 | if (distmy <= delta) |
---|
| 1148 | { |
---|
| 1149 | noSurfaces ++; |
---|
| 1150 | sumnorm += nmY; |
---|
| 1151 | } |
---|
| 1152 | if (distz <= delta) |
---|
| 1153 | { |
---|
| 1154 | noSurfaces ++; |
---|
| 1155 | if ( p.z() >= 0.) sumnorm += nZ; |
---|
| 1156 | else sumnorm -= nZ; |
---|
| 1157 | } |
---|
| 1158 | if ( noSurfaces == 0 ) |
---|
| 1159 | { |
---|
| 1160 | #ifdef G4CSGDEBUG |
---|
| 1161 | G4Exception("G4Trap::SurfaceNormal(p)", "Notification", JustWarning, |
---|
| 1162 | "Point p is not on surface !?" ); |
---|
| 1163 | #endif |
---|
| 1164 | norm = ApproxSurfaceNormal(p); |
---|
| 1165 | } |
---|
| 1166 | else if ( noSurfaces == 1 ) norm = sumnorm; |
---|
| 1167 | else norm = sumnorm.unit(); |
---|
| 1168 | return norm; |
---|
| 1169 | } |
---|
| 1170 | |
---|
| 1171 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 1172 | // |
---|
| 1173 | // Algorithm for SurfaceNormal() following the original specification |
---|
| 1174 | // for points not on the surface |
---|
| 1175 | |
---|
| 1176 | G4ThreeVector G4Trap::ApproxSurfaceNormal( const G4ThreeVector& p ) const |
---|
| 1177 | { |
---|
| 1178 | G4double safe=kInfinity,Dist,safez; |
---|
| 1179 | G4int i,imin=0; |
---|
| 1180 | for (i=0;i<4;i++) |
---|
| 1181 | { |
---|
| 1182 | Dist=std::fabs(fPlanes[i].a*p.x()+fPlanes[i].b*p.y() |
---|
| 1183 | +fPlanes[i].c*p.z()+fPlanes[i].d); |
---|
| 1184 | if (Dist<safe) |
---|
| 1185 | { |
---|
| 1186 | safe=Dist; |
---|
| 1187 | imin=i; |
---|
| 1188 | } |
---|
| 1189 | } |
---|
| 1190 | safez=std::fabs(std::fabs(p.z())-fDz); |
---|
| 1191 | if (safe<safez) |
---|
| 1192 | { |
---|
| 1193 | return G4ThreeVector(fPlanes[imin].a,fPlanes[imin].b,fPlanes[imin].c); |
---|
| 1194 | } |
---|
| 1195 | else |
---|
| 1196 | { |
---|
| 1197 | if (p.z()>0) |
---|
| 1198 | { |
---|
| 1199 | return G4ThreeVector(0,0,1); |
---|
| 1200 | } |
---|
| 1201 | else |
---|
| 1202 | { |
---|
| 1203 | return G4ThreeVector(0,0,-1); |
---|
| 1204 | } |
---|
| 1205 | } |
---|
| 1206 | } |
---|
| 1207 | |
---|
| 1208 | //////////////////////////////////////////////////////////////////////////// |
---|
| 1209 | // |
---|
| 1210 | // Calculate distance to shape from outside - return kInfinity if no intersection |
---|
| 1211 | // |
---|
| 1212 | // ALGORITHM: |
---|
| 1213 | // For each component, calculate pair of minimum and maximum intersection |
---|
| 1214 | // values for which the particle is in the extent of the shape |
---|
| 1215 | // - The smallest (MAX minimum) allowed distance of the pairs is intersect |
---|
| 1216 | |
---|
| 1217 | G4double G4Trap::DistanceToIn( const G4ThreeVector& p, |
---|
| 1218 | const G4ThreeVector& v ) const |
---|
| 1219 | { |
---|
| 1220 | |
---|
| 1221 | G4double snxt; // snxt = default return value |
---|
| 1222 | G4double max,smax,smin; |
---|
| 1223 | G4double pdist,Comp,vdist; |
---|
| 1224 | G4int i; |
---|
| 1225 | // |
---|
| 1226 | // Z Intersection range |
---|
| 1227 | // |
---|
| 1228 | if ( v.z() > 0 ) |
---|
| 1229 | { |
---|
| 1230 | max = fDz - p.z() ; |
---|
| 1231 | if (max > 0.5*kCarTolerance) |
---|
| 1232 | { |
---|
| 1233 | smax = max/v.z(); |
---|
| 1234 | smin = (-fDz-p.z())/v.z(); |
---|
| 1235 | } |
---|
| 1236 | else |
---|
| 1237 | { |
---|
| 1238 | return snxt=kInfinity; |
---|
| 1239 | } |
---|
| 1240 | } |
---|
| 1241 | else if (v.z() < 0 ) |
---|
| 1242 | { |
---|
| 1243 | max = - fDz - p.z() ; |
---|
| 1244 | if (max < -0.5*kCarTolerance ) |
---|
| 1245 | { |
---|
| 1246 | smax=max/v.z(); |
---|
| 1247 | smin=(fDz-p.z())/v.z(); |
---|
| 1248 | } |
---|
| 1249 | else |
---|
| 1250 | { |
---|
| 1251 | return snxt=kInfinity; |
---|
| 1252 | } |
---|
| 1253 | } |
---|
| 1254 | else |
---|
| 1255 | { |
---|
| 1256 | if (std::fabs(p.z())<fDz - 0.5*kCarTolerance) // Inside was <=fDz |
---|
| 1257 | { |
---|
| 1258 | smin=0; |
---|
| 1259 | smax=kInfinity; |
---|
| 1260 | } |
---|
| 1261 | else |
---|
| 1262 | { |
---|
| 1263 | return snxt=kInfinity; |
---|
| 1264 | } |
---|
| 1265 | } |
---|
| 1266 | |
---|
| 1267 | for (i=0;i<4;i++) |
---|
| 1268 | { |
---|
| 1269 | pdist=fPlanes[i].a*p.x()+fPlanes[i].b*p.y() |
---|
| 1270 | +fPlanes[i].c*p.z()+fPlanes[i].d; |
---|
| 1271 | Comp=fPlanes[i].a*v.x()+fPlanes[i].b*v.y()+fPlanes[i].c*v.z(); |
---|
| 1272 | if ( pdist >= -0.5*kCarTolerance ) // was >0 |
---|
| 1273 | { |
---|
| 1274 | // |
---|
| 1275 | // Outside the plane -> this is an extent entry distance |
---|
| 1276 | // |
---|
| 1277 | if (Comp >= 0) // was >0 |
---|
| 1278 | { |
---|
| 1279 | return snxt=kInfinity ; |
---|
| 1280 | } |
---|
| 1281 | else |
---|
| 1282 | { |
---|
| 1283 | vdist=-pdist/Comp; |
---|
| 1284 | if (vdist>smin) |
---|
| 1285 | { |
---|
| 1286 | if (vdist<smax) |
---|
| 1287 | { |
---|
| 1288 | smin = vdist; |
---|
| 1289 | } |
---|
| 1290 | else |
---|
| 1291 | { |
---|
| 1292 | return snxt=kInfinity; |
---|
| 1293 | } |
---|
| 1294 | } |
---|
| 1295 | } |
---|
| 1296 | } |
---|
| 1297 | else |
---|
| 1298 | { |
---|
| 1299 | // |
---|
| 1300 | // Inside the plane -> couble be an extent exit distance (smax) |
---|
| 1301 | // |
---|
| 1302 | if (Comp>0) // Will leave extent |
---|
| 1303 | { |
---|
| 1304 | vdist=-pdist/Comp; |
---|
| 1305 | if (vdist<smax) |
---|
| 1306 | { |
---|
| 1307 | if (vdist>smin) |
---|
| 1308 | { |
---|
| 1309 | smax=vdist; |
---|
| 1310 | } |
---|
| 1311 | else |
---|
| 1312 | { |
---|
| 1313 | return snxt=kInfinity; |
---|
| 1314 | } |
---|
| 1315 | } |
---|
| 1316 | } |
---|
| 1317 | } |
---|
| 1318 | } |
---|
| 1319 | // |
---|
| 1320 | // Checks in non z plane intersections ensure smin<smax |
---|
| 1321 | // |
---|
| 1322 | if (smin >=0 ) |
---|
| 1323 | { |
---|
| 1324 | snxt = smin ; |
---|
| 1325 | } |
---|
| 1326 | else |
---|
| 1327 | { |
---|
| 1328 | snxt = 0 ; |
---|
| 1329 | } |
---|
| 1330 | return snxt; |
---|
| 1331 | } |
---|
| 1332 | |
---|
| 1333 | /////////////////////////////////////////////////////////////////////////// |
---|
| 1334 | // |
---|
| 1335 | // Calculate exact shortest distance to any boundary from outside |
---|
| 1336 | // This is the best fast estimation of the shortest distance to trap |
---|
| 1337 | // - Returns 0 is ThreeVector inside |
---|
| 1338 | |
---|
| 1339 | G4double G4Trap::DistanceToIn( const G4ThreeVector& p ) const |
---|
| 1340 | { |
---|
| 1341 | G4double safe=0.0,Dist; |
---|
| 1342 | G4int i; |
---|
| 1343 | safe=std::fabs(p.z())-fDz; |
---|
| 1344 | for (i=0;i<4;i++) |
---|
| 1345 | { |
---|
| 1346 | Dist=fPlanes[i].a*p.x()+fPlanes[i].b*p.y() |
---|
| 1347 | +fPlanes[i].c*p.z()+fPlanes[i].d; |
---|
| 1348 | if (Dist > safe) safe=Dist; |
---|
| 1349 | } |
---|
| 1350 | if (safe<0) safe=0; |
---|
| 1351 | return safe; |
---|
| 1352 | } |
---|
| 1353 | |
---|
| 1354 | ///////////////////////////////////////////////////////////////////////////////// |
---|
| 1355 | // |
---|
| 1356 | // Calculate distance to surface of shape from inside |
---|
| 1357 | // Calculate distance to x/y/z planes - smallest is exiting distance |
---|
| 1358 | |
---|
| 1359 | G4double G4Trap::DistanceToOut(const G4ThreeVector& p, const G4ThreeVector& v, |
---|
| 1360 | const G4bool calcNorm, |
---|
| 1361 | G4bool *validNorm, G4ThreeVector *n) const |
---|
| 1362 | { |
---|
| 1363 | Eside side = kUndef; |
---|
| 1364 | G4double snxt; // snxt = return value |
---|
| 1365 | G4double pdist,Comp,vdist,max; |
---|
| 1366 | // |
---|
| 1367 | // Z Intersections |
---|
| 1368 | // |
---|
| 1369 | if (v.z()>0) |
---|
| 1370 | { |
---|
| 1371 | max=fDz-p.z(); |
---|
| 1372 | if (max>kCarTolerance/2) |
---|
| 1373 | { |
---|
| 1374 | snxt=max/v.z(); |
---|
| 1375 | side=kPZ; |
---|
| 1376 | } |
---|
| 1377 | else |
---|
| 1378 | { |
---|
| 1379 | if (calcNorm) |
---|
| 1380 | { |
---|
| 1381 | *validNorm=true; |
---|
| 1382 | *n=G4ThreeVector(0,0,1); |
---|
| 1383 | } |
---|
| 1384 | return snxt=0; |
---|
| 1385 | } |
---|
| 1386 | } |
---|
| 1387 | else if (v.z()<0) |
---|
| 1388 | { |
---|
| 1389 | max=-fDz-p.z(); |
---|
| 1390 | if (max<-kCarTolerance/2) |
---|
| 1391 | { |
---|
| 1392 | snxt=max/v.z(); |
---|
| 1393 | side=kMZ; |
---|
| 1394 | } |
---|
| 1395 | else |
---|
| 1396 | { |
---|
| 1397 | if (calcNorm) |
---|
| 1398 | { |
---|
| 1399 | *validNorm=true; |
---|
| 1400 | *n=G4ThreeVector(0,0,-1); |
---|
| 1401 | } |
---|
| 1402 | return snxt=0; |
---|
| 1403 | } |
---|
| 1404 | } |
---|
| 1405 | else |
---|
| 1406 | { |
---|
| 1407 | snxt=kInfinity; |
---|
| 1408 | } |
---|
| 1409 | |
---|
| 1410 | // |
---|
| 1411 | // Intersections with planes[0] (expanded because of setting enum) |
---|
| 1412 | // |
---|
| 1413 | pdist=fPlanes[0].a*p.x()+fPlanes[0].b*p.y()+fPlanes[0].c*p.z()+fPlanes[0].d; |
---|
| 1414 | Comp=fPlanes[0].a*v.x()+fPlanes[0].b*v.y()+fPlanes[0].c*v.z(); |
---|
| 1415 | if (pdist>0) |
---|
| 1416 | { |
---|
| 1417 | // Outside the plane |
---|
| 1418 | if (Comp>0) |
---|
| 1419 | { |
---|
| 1420 | // Leaving immediately |
---|
| 1421 | if (calcNorm) |
---|
| 1422 | { |
---|
| 1423 | *validNorm=true; |
---|
| 1424 | *n=G4ThreeVector(fPlanes[0].a,fPlanes[0].b,fPlanes[0].c); |
---|
| 1425 | } |
---|
| 1426 | return snxt=0; |
---|
| 1427 | } |
---|
| 1428 | } |
---|
| 1429 | else if (pdist<-kCarTolerance/2) |
---|
| 1430 | { |
---|
| 1431 | // Inside the plane |
---|
| 1432 | if (Comp>0) |
---|
| 1433 | { |
---|
| 1434 | // Will leave extent |
---|
| 1435 | vdist=-pdist/Comp; |
---|
| 1436 | if (vdist<snxt) |
---|
| 1437 | { |
---|
| 1438 | snxt=vdist; |
---|
| 1439 | side=ks0; |
---|
| 1440 | } |
---|
| 1441 | } |
---|
| 1442 | } |
---|
| 1443 | else |
---|
| 1444 | { |
---|
| 1445 | // On surface |
---|
| 1446 | if (Comp>0) |
---|
| 1447 | { |
---|
| 1448 | if (calcNorm) |
---|
| 1449 | { |
---|
| 1450 | *validNorm=true; |
---|
| 1451 | *n=G4ThreeVector(fPlanes[0].a,fPlanes[0].b,fPlanes[0].c); |
---|
| 1452 | } |
---|
| 1453 | return snxt=0; |
---|
| 1454 | } |
---|
| 1455 | } |
---|
| 1456 | |
---|
| 1457 | // |
---|
| 1458 | // Intersections with planes[1] (expanded because of setting enum) |
---|
| 1459 | // |
---|
| 1460 | pdist=fPlanes[1].a*p.x()+fPlanes[1].b*p.y()+fPlanes[1].c*p.z()+fPlanes[1].d; |
---|
| 1461 | Comp=fPlanes[1].a*v.x()+fPlanes[1].b*v.y()+fPlanes[1].c*v.z(); |
---|
| 1462 | if (pdist>0) |
---|
| 1463 | { |
---|
| 1464 | // Outside the plane |
---|
| 1465 | if (Comp>0) |
---|
| 1466 | { |
---|
| 1467 | // Leaving immediately |
---|
| 1468 | if (calcNorm) |
---|
| 1469 | { |
---|
| 1470 | *validNorm=true; |
---|
| 1471 | *n=G4ThreeVector(fPlanes[1].a,fPlanes[1].b,fPlanes[1].c); |
---|
| 1472 | } |
---|
| 1473 | return snxt=0; |
---|
| 1474 | } |
---|
| 1475 | } |
---|
| 1476 | else if (pdist<-kCarTolerance/2) |
---|
| 1477 | { |
---|
| 1478 | // Inside the plane |
---|
| 1479 | if (Comp>0) |
---|
| 1480 | { |
---|
| 1481 | // Will leave extent |
---|
| 1482 | vdist=-pdist/Comp; |
---|
| 1483 | if (vdist<snxt) |
---|
| 1484 | { |
---|
| 1485 | snxt=vdist; |
---|
| 1486 | side=ks1; |
---|
| 1487 | } |
---|
| 1488 | } |
---|
| 1489 | } |
---|
| 1490 | else |
---|
| 1491 | { |
---|
| 1492 | // On surface |
---|
| 1493 | if (Comp>0) |
---|
| 1494 | { |
---|
| 1495 | if (calcNorm) |
---|
| 1496 | { |
---|
| 1497 | *validNorm=true; |
---|
| 1498 | *n=G4ThreeVector(fPlanes[1].a,fPlanes[1].b,fPlanes[1].c); |
---|
| 1499 | } |
---|
| 1500 | return snxt=0; |
---|
| 1501 | } |
---|
| 1502 | } |
---|
| 1503 | |
---|
| 1504 | // |
---|
| 1505 | // Intersections with planes[2] (expanded because of setting enum) |
---|
| 1506 | // |
---|
| 1507 | pdist=fPlanes[2].a*p.x()+fPlanes[2].b*p.y()+fPlanes[2].c*p.z()+fPlanes[2].d; |
---|
| 1508 | Comp=fPlanes[2].a*v.x()+fPlanes[2].b*v.y()+fPlanes[2].c*v.z(); |
---|
| 1509 | if (pdist>0) |
---|
| 1510 | { |
---|
| 1511 | // Outside the plane |
---|
| 1512 | if (Comp>0) |
---|
| 1513 | { |
---|
| 1514 | // Leaving immediately |
---|
| 1515 | if (calcNorm) |
---|
| 1516 | { |
---|
| 1517 | *validNorm=true; |
---|
| 1518 | *n=G4ThreeVector(fPlanes[2].a,fPlanes[2].b,fPlanes[2].c); |
---|
| 1519 | } |
---|
| 1520 | return snxt=0; |
---|
| 1521 | } |
---|
| 1522 | } |
---|
| 1523 | else if (pdist<-kCarTolerance/2) |
---|
| 1524 | { |
---|
| 1525 | // Inside the plane |
---|
| 1526 | if (Comp>0) |
---|
| 1527 | { |
---|
| 1528 | // Will leave extent |
---|
| 1529 | vdist=-pdist/Comp; |
---|
| 1530 | if (vdist<snxt) |
---|
| 1531 | { |
---|
| 1532 | snxt=vdist; |
---|
| 1533 | side=ks2; |
---|
| 1534 | } |
---|
| 1535 | } |
---|
| 1536 | } |
---|
| 1537 | else |
---|
| 1538 | { |
---|
| 1539 | // On surface |
---|
| 1540 | if (Comp>0) |
---|
| 1541 | { |
---|
| 1542 | if (calcNorm) |
---|
| 1543 | { |
---|
| 1544 | *validNorm=true; |
---|
| 1545 | *n=G4ThreeVector(fPlanes[2].a,fPlanes[2].b,fPlanes[2].c); |
---|
| 1546 | } |
---|
| 1547 | return snxt=0; |
---|
| 1548 | } |
---|
| 1549 | } |
---|
| 1550 | |
---|
| 1551 | // |
---|
| 1552 | // Intersections with planes[3] (expanded because of setting enum) |
---|
| 1553 | // |
---|
| 1554 | pdist=fPlanes[3].a*p.x()+fPlanes[3].b*p.y()+fPlanes[3].c*p.z()+fPlanes[3].d; |
---|
| 1555 | Comp=fPlanes[3].a*v.x()+fPlanes[3].b*v.y()+fPlanes[3].c*v.z(); |
---|
| 1556 | if (pdist>0) |
---|
| 1557 | { |
---|
| 1558 | // Outside the plane |
---|
| 1559 | if (Comp>0) |
---|
| 1560 | { |
---|
| 1561 | // Leaving immediately |
---|
| 1562 | if (calcNorm) |
---|
| 1563 | { |
---|
| 1564 | *validNorm=true; |
---|
| 1565 | *n=G4ThreeVector(fPlanes[3].a,fPlanes[3].b,fPlanes[3].c); |
---|
| 1566 | } |
---|
| 1567 | return snxt=0; |
---|
| 1568 | } |
---|
| 1569 | } |
---|
| 1570 | else if (pdist<-kCarTolerance/2) |
---|
| 1571 | { |
---|
| 1572 | // Inside the plane |
---|
| 1573 | if (Comp>0) |
---|
| 1574 | { |
---|
| 1575 | // Will leave extent |
---|
| 1576 | vdist=-pdist/Comp; |
---|
| 1577 | if (vdist<snxt) |
---|
| 1578 | { |
---|
| 1579 | snxt=vdist; |
---|
| 1580 | side=ks3; |
---|
| 1581 | } |
---|
| 1582 | } |
---|
| 1583 | } |
---|
| 1584 | else |
---|
| 1585 | { |
---|
| 1586 | // On surface |
---|
| 1587 | if (Comp>0) |
---|
| 1588 | { |
---|
| 1589 | if (calcNorm) |
---|
| 1590 | { |
---|
| 1591 | *validNorm=true; |
---|
| 1592 | *n=G4ThreeVector(fPlanes[3].a,fPlanes[3].b,fPlanes[3].c); |
---|
| 1593 | } |
---|
| 1594 | return snxt=0; |
---|
| 1595 | } |
---|
| 1596 | } |
---|
| 1597 | |
---|
| 1598 | // set normal |
---|
| 1599 | if (calcNorm) |
---|
| 1600 | { |
---|
| 1601 | *validNorm=true; |
---|
| 1602 | switch(side) |
---|
| 1603 | { |
---|
| 1604 | case ks0: |
---|
| 1605 | *n=G4ThreeVector(fPlanes[0].a,fPlanes[0].b,fPlanes[0].c); |
---|
| 1606 | break; |
---|
| 1607 | case ks1: |
---|
| 1608 | *n=G4ThreeVector(fPlanes[1].a,fPlanes[1].b,fPlanes[1].c); |
---|
| 1609 | break; |
---|
| 1610 | case ks2: |
---|
| 1611 | *n=G4ThreeVector(fPlanes[2].a,fPlanes[2].b,fPlanes[2].c); |
---|
| 1612 | break; |
---|
| 1613 | case ks3: |
---|
| 1614 | *n=G4ThreeVector(fPlanes[3].a,fPlanes[3].b,fPlanes[3].c); |
---|
| 1615 | break; |
---|
| 1616 | case kMZ: |
---|
| 1617 | *n=G4ThreeVector(0,0,-1); |
---|
| 1618 | break; |
---|
| 1619 | case kPZ: |
---|
| 1620 | *n=G4ThreeVector(0,0,1); |
---|
| 1621 | break; |
---|
| 1622 | default: |
---|
| 1623 | G4cout.precision(16); |
---|
| 1624 | G4cout << G4endl; |
---|
| 1625 | DumpInfo(); |
---|
| 1626 | G4cout << "Position:" << G4endl << G4endl; |
---|
| 1627 | G4cout << "p.x() = " << p.x()/mm << " mm" << G4endl; |
---|
| 1628 | G4cout << "p.y() = " << p.y()/mm << " mm" << G4endl; |
---|
| 1629 | G4cout << "p.z() = " << p.z()/mm << " mm" << G4endl << G4endl; |
---|
| 1630 | G4cout << "Direction:" << G4endl << G4endl; |
---|
| 1631 | G4cout << "v.x() = " << v.x() << G4endl; |
---|
| 1632 | G4cout << "v.y() = " << v.y() << G4endl; |
---|
| 1633 | G4cout << "v.z() = " << v.z() << G4endl << G4endl; |
---|
| 1634 | G4cout << "Proposed distance :" << G4endl << G4endl; |
---|
| 1635 | G4cout << "snxt = " << snxt/mm << " mm" << G4endl << G4endl; |
---|
| 1636 | G4Exception("G4Trap::DistanceToOut(p,v,..)","Notification",JustWarning, |
---|
| 1637 | "Undefined side for valid surface normal to solid."); |
---|
| 1638 | break; |
---|
| 1639 | } |
---|
| 1640 | } |
---|
| 1641 | return snxt; |
---|
| 1642 | } |
---|
| 1643 | |
---|
| 1644 | ////////////////////////////////////////////////////////////////////////////// |
---|
| 1645 | // |
---|
| 1646 | // Calculate exact shortest distance to any boundary from inside |
---|
| 1647 | // - Returns 0 is ThreeVector outside |
---|
| 1648 | |
---|
| 1649 | G4double G4Trap::DistanceToOut( const G4ThreeVector& p ) const |
---|
| 1650 | { |
---|
| 1651 | G4double safe=0.0,Dist; |
---|
| 1652 | G4int i; |
---|
| 1653 | |
---|
| 1654 | #ifdef G4CSGDEBUG |
---|
| 1655 | if( Inside(p) == kOutside ) |
---|
| 1656 | { |
---|
| 1657 | G4cout.precision(16) ; |
---|
| 1658 | G4cout << G4endl ; |
---|
| 1659 | DumpInfo(); |
---|
| 1660 | G4cout << "Position:" << G4endl << G4endl ; |
---|
| 1661 | G4cout << "p.x() = " << p.x()/mm << " mm" << G4endl ; |
---|
| 1662 | G4cout << "p.y() = " << p.y()/mm << " mm" << G4endl ; |
---|
| 1663 | G4cout << "p.z() = " << p.z()/mm << " mm" << G4endl << G4endl ; |
---|
| 1664 | G4Exception("G4Trap::DistanceToOut(p)", |
---|
| 1665 | "Notification", JustWarning, "Point p is outside !?" ); |
---|
| 1666 | } |
---|
| 1667 | #endif |
---|
| 1668 | |
---|
| 1669 | safe=fDz-std::fabs(p.z()); |
---|
| 1670 | if (safe<0) safe=0; |
---|
| 1671 | else |
---|
| 1672 | { |
---|
| 1673 | for (i=0;i<4;i++) |
---|
| 1674 | { |
---|
| 1675 | Dist=-(fPlanes[i].a*p.x()+fPlanes[i].b*p.y() |
---|
| 1676 | +fPlanes[i].c*p.z()+fPlanes[i].d); |
---|
| 1677 | if (Dist<safe) safe=Dist; |
---|
| 1678 | } |
---|
| 1679 | if (safe<0) safe=0; |
---|
| 1680 | } |
---|
| 1681 | return safe; |
---|
| 1682 | } |
---|
| 1683 | |
---|
| 1684 | ////////////////////////////////////////////////////////////////////////// |
---|
| 1685 | // |
---|
| 1686 | // Create a List containing the transformed vertices |
---|
| 1687 | // Ordering [0-3] -fDz cross section |
---|
| 1688 | // [4-7] +fDz cross section such that [0] is below [4], |
---|
| 1689 | // [1] below [5] etc. |
---|
| 1690 | // Note: |
---|
| 1691 | // Caller has deletion resposibility |
---|
| 1692 | |
---|
| 1693 | G4ThreeVectorList* |
---|
| 1694 | G4Trap::CreateRotatedVertices( const G4AffineTransform& pTransform ) const |
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| 1695 | { |
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| 1696 | G4ThreeVectorList *vertices; |
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| 1697 | vertices=new G4ThreeVectorList(); |
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| 1698 | vertices->reserve(8); |
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| 1699 | if (vertices) |
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| 1700 | { |
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| 1701 | G4ThreeVector vertex0(-fDz*fTthetaCphi-fDy1*fTalpha1-fDx1, |
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| 1702 | -fDz*fTthetaSphi-fDy1,-fDz); |
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| 1703 | G4ThreeVector vertex1(-fDz*fTthetaCphi-fDy1*fTalpha1+fDx1, |
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| 1704 | -fDz*fTthetaSphi-fDy1,-fDz); |
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| 1705 | G4ThreeVector vertex2(-fDz*fTthetaCphi+fDy1*fTalpha1-fDx2, |
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| 1706 | -fDz*fTthetaSphi+fDy1,-fDz); |
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| 1707 | G4ThreeVector vertex3(-fDz*fTthetaCphi+fDy1*fTalpha1+fDx2, |
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| 1708 | -fDz*fTthetaSphi+fDy1,-fDz); |
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| 1709 | G4ThreeVector vertex4(+fDz*fTthetaCphi-fDy2*fTalpha2-fDx3, |
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| 1710 | +fDz*fTthetaSphi-fDy2,+fDz); |
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| 1711 | G4ThreeVector vertex5(+fDz*fTthetaCphi-fDy2*fTalpha2+fDx3, |
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| 1712 | +fDz*fTthetaSphi-fDy2,+fDz); |
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| 1713 | G4ThreeVector vertex6(+fDz*fTthetaCphi+fDy2*fTalpha2-fDx4, |
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| 1714 | +fDz*fTthetaSphi+fDy2,+fDz); |
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| 1715 | G4ThreeVector vertex7(+fDz*fTthetaCphi+fDy2*fTalpha2+fDx4, |
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| 1716 | +fDz*fTthetaSphi+fDy2,+fDz); |
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| 1717 | |
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| 1718 | vertices->push_back(pTransform.TransformPoint(vertex0)); |
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| 1719 | vertices->push_back(pTransform.TransformPoint(vertex1)); |
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| 1720 | vertices->push_back(pTransform.TransformPoint(vertex2)); |
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| 1721 | vertices->push_back(pTransform.TransformPoint(vertex3)); |
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| 1722 | vertices->push_back(pTransform.TransformPoint(vertex4)); |
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| 1723 | vertices->push_back(pTransform.TransformPoint(vertex5)); |
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| 1724 | vertices->push_back(pTransform.TransformPoint(vertex6)); |
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| 1725 | vertices->push_back(pTransform.TransformPoint(vertex7)); |
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| 1726 | } |
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| 1727 | else |
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| 1728 | { |
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| 1729 | DumpInfo(); |
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| 1730 | G4Exception("G4Trap::CreateRotatedVertices()", |
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| 1731 | "FatalError", FatalException, |
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| 1732 | "Error in allocation of vertices. Out of memory !"); |
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| 1733 | } |
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| 1734 | return vertices; |
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| 1735 | } |
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| 1736 | |
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| 1737 | ////////////////////////////////////////////////////////////////////////// |
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| 1738 | // |
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| 1739 | // GetEntityType |
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| 1740 | |
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| 1741 | G4GeometryType G4Trap::GetEntityType() const |
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| 1742 | { |
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| 1743 | return G4String("G4Trap"); |
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| 1744 | } |
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| 1745 | |
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| 1746 | ////////////////////////////////////////////////////////////////////////// |
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| 1747 | // |
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| 1748 | // Stream object contents to an output stream |
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| 1749 | |
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| 1750 | std::ostream& G4Trap::StreamInfo( std::ostream& os ) const |
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| 1751 | { |
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| 1752 | os << "-----------------------------------------------------------\n" |
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| 1753 | << " *** Dump for solid - " << GetName() << " ***\n" |
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| 1754 | << " ===================================================\n" |
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| 1755 | << " Solid type: G4Trap\n" |
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| 1756 | << " Parameters: \n" |
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| 1757 | << " half length Z: " << fDz/mm << " mm \n" |
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| 1758 | << " half length Y of face -fDz: " << fDy1/mm << " mm \n" |
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| 1759 | << " half length X of side -fDy1, face -fDz: " << fDx1/mm << " mm \n" |
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| 1760 | << " half length X of side +fDy1, face -fDz: " << fDx2/mm << " mm \n" |
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| 1761 | << " half length Y of face +fDz: " << fDy2/mm << " mm \n" |
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| 1762 | << " half length X of side -fDy2, face +fDz: " << fDx3/mm << " mm \n" |
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| 1763 | << " half length X of side +fDy2, face +fDz: " << fDx4/mm << " mm \n" |
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| 1764 | << " std::tan(theta)*std::cos(phi): " << fTthetaCphi/degree << " degrees \n" |
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| 1765 | << " std::tan(theta)*std::sin(phi): " << fTthetaSphi/degree << " degrees \n" |
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| 1766 | << " std::tan(alpha), -fDz: " << fTalpha1/degree << " degrees \n" |
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| 1767 | << " std::tan(alpha), +fDz: " << fTalpha2/degree << " degrees \n" |
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| 1768 | << " trap side plane equations:\n" |
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| 1769 | << " " << fPlanes[0].a << " X + " << fPlanes[0].b << " Y + " |
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| 1770 | << fPlanes[0].c << " Z + " << fPlanes[0].d << " = 0\n" |
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| 1771 | << " " << fPlanes[1].a << " X + " << fPlanes[1].b << " Y + " |
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| 1772 | << fPlanes[1].c << " Z + " << fPlanes[1].d << " = 0\n" |
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| 1773 | << " " << fPlanes[2].a << " X + " << fPlanes[2].b << " Y + " |
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| 1774 | << fPlanes[2].c << " Z + " << fPlanes[2].d << " = 0\n" |
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| 1775 | << " " << fPlanes[3].a << " X + " << fPlanes[3].b << " Y + " |
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| 1776 | << fPlanes[3].c << " Z + " << fPlanes[3].d << " = 0\n" |
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| 1777 | << "-----------------------------------------------------------\n"; |
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| 1778 | |
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| 1779 | return os; |
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| 1780 | } |
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| 1781 | |
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| 1782 | ///////////////////////////////////////////////////////////////////////// |
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| 1783 | // |
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| 1784 | // GetPointOnPlane |
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| 1785 | // |
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| 1786 | // Auxiliary method for Get Point on Surface |
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| 1787 | |
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| 1788 | G4ThreeVector G4Trap::GetPointOnPlane(G4ThreeVector p0, G4ThreeVector p1, |
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| 1789 | G4ThreeVector p2, G4ThreeVector p3, |
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| 1790 | G4double& area) const |
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| 1791 | { |
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| 1792 | G4double lambda1, lambda2, chose, aOne, aTwo; |
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| 1793 | G4ThreeVector t, u, v, w, Area, normal; |
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| 1794 | |
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| 1795 | t = p1 - p0; |
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| 1796 | u = p2 - p1; |
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| 1797 | v = p3 - p2; |
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| 1798 | w = p0 - p3; |
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| 1799 | |
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| 1800 | Area = G4ThreeVector(w.y()*v.z() - w.z()*v.y(), |
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| 1801 | w.z()*v.x() - w.x()*v.z(), |
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| 1802 | w.x()*v.y() - w.y()*v.x()); |
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| 1803 | |
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| 1804 | aOne = 0.5*Area.mag(); |
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| 1805 | |
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| 1806 | Area = G4ThreeVector(t.y()*u.z() - t.z()*u.y(), |
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| 1807 | t.z()*u.x() - t.x()*u.z(), |
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| 1808 | t.x()*u.y() - t.y()*u.x()); |
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| 1809 | |
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| 1810 | aTwo = 0.5*Area.mag(); |
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| 1811 | |
---|
| 1812 | area = aOne + aTwo; |
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| 1813 | |
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| 1814 | chose = RandFlat::shoot(0.,aOne+aTwo); |
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| 1815 | |
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| 1816 | if( (chose>=0.) && (chose < aOne) ) |
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| 1817 | { |
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| 1818 | lambda1 = RandFlat::shoot(0.,1.); |
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| 1819 | lambda2 = RandFlat::shoot(0.,lambda1); |
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| 1820 | return (p2+lambda1*v+lambda2*w); |
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| 1821 | } |
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| 1822 | |
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| 1823 | // else |
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| 1824 | |
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| 1825 | lambda1 = RandFlat::shoot(0.,1.); |
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| 1826 | lambda2 = RandFlat::shoot(0.,lambda1); |
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| 1827 | |
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| 1828 | return (p0+lambda1*t+lambda2*u); |
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| 1829 | } |
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| 1830 | |
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| 1831 | /////////////////////////////////////////////////////////////// |
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| 1832 | // |
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| 1833 | // GetPointOnSurface |
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| 1834 | |
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| 1835 | G4ThreeVector G4Trap::GetPointOnSurface() const |
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| 1836 | { |
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| 1837 | G4double aOne, aTwo, aThree, aFour, aFive, aSix, chose; |
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| 1838 | G4ThreeVector One, Two, Three, Four, Five, Six, test; |
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| 1839 | G4ThreeVector pt[8]; |
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| 1840 | |
---|
| 1841 | pt[0] = G4ThreeVector(-fDz*fTthetaCphi-fDy1*fTalpha1-fDx1, |
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| 1842 | -fDz*fTthetaSphi-fDy1,-fDz); |
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| 1843 | pt[1] = G4ThreeVector(-fDz*fTthetaCphi-fDy1*fTalpha1+fDx1, |
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| 1844 | -fDz*fTthetaSphi-fDy1,-fDz); |
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| 1845 | pt[2] = G4ThreeVector(-fDz*fTthetaCphi+fDy1*fTalpha1-fDx2, |
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| 1846 | -fDz*fTthetaSphi+fDy1,-fDz); |
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| 1847 | pt[3] = G4ThreeVector(-fDz*fTthetaCphi+fDy1*fTalpha1+fDx2, |
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| 1848 | -fDz*fTthetaSphi+fDy1,-fDz); |
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| 1849 | pt[4] = G4ThreeVector(+fDz*fTthetaCphi-fDy2*fTalpha2-fDx3, |
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| 1850 | +fDz*fTthetaSphi-fDy2,+fDz); |
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| 1851 | pt[5] = G4ThreeVector(+fDz*fTthetaCphi-fDy2*fTalpha2+fDx3, |
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| 1852 | +fDz*fTthetaSphi-fDy2,+fDz); |
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| 1853 | pt[6] = G4ThreeVector(+fDz*fTthetaCphi+fDy2*fTalpha2-fDx4, |
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| 1854 | +fDz*fTthetaSphi+fDy2,+fDz); |
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| 1855 | pt[7] = G4ThreeVector(+fDz*fTthetaCphi+fDy2*fTalpha2+fDx4, |
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| 1856 | +fDz*fTthetaSphi+fDy2,+fDz); |
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| 1857 | |
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| 1858 | // make sure we provide the points in a clockwise fashion |
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| 1859 | |
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| 1860 | One = GetPointOnPlane(pt[0],pt[1],pt[3],pt[2], aOne); |
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| 1861 | Two = GetPointOnPlane(pt[4],pt[5],pt[7],pt[6], aTwo); |
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| 1862 | Three = GetPointOnPlane(pt[6],pt[7],pt[3],pt[2], aThree); |
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| 1863 | Four = GetPointOnPlane(pt[4],pt[5],pt[1],pt[0], aFour); |
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| 1864 | Five = GetPointOnPlane(pt[0],pt[2],pt[6],pt[4], aFive); |
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| 1865 | Six = GetPointOnPlane(pt[1],pt[3],pt[7],pt[5], aSix); |
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| 1866 | |
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| 1867 | chose = RandFlat::shoot(0.,aOne+aTwo+aThree+aFour+aFive+aSix); |
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| 1868 | if( (chose>=0.) && (chose<aOne) ) |
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| 1869 | { return One; } |
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| 1870 | else if( (chose>=aOne) && (chose<aOne+aTwo) ) |
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| 1871 | { return Two; } |
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| 1872 | else if( (chose>=aOne+aTwo) && (chose<aOne+aTwo+aThree) ) |
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| 1873 | { return Three; } |
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| 1874 | else if( (chose>=aOne+aTwo+aThree) && (chose<aOne+aTwo+aThree+aFour) ) |
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| 1875 | { return Four; } |
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| 1876 | else if( (chose>=aOne+aTwo+aThree+aFour) |
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| 1877 | && (chose<aOne+aTwo+aThree+aFour+aFive) ) |
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| 1878 | { return Five; } |
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| 1879 | return Six; |
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| 1880 | } |
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| 1881 | |
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| 1882 | ////////////////////////////////////////////////////////////////////////// |
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| 1883 | // |
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| 1884 | // Methods for visualisation |
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| 1885 | |
---|
| 1886 | void G4Trap::DescribeYourselfTo ( G4VGraphicsScene& scene ) const |
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| 1887 | { |
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| 1888 | scene.AddSolid (*this); |
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| 1889 | } |
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| 1890 | |
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| 1891 | G4Polyhedron* G4Trap::CreatePolyhedron () const |
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| 1892 | { |
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| 1893 | G4double phi = std::atan2(fTthetaSphi, fTthetaCphi); |
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| 1894 | G4double alpha1 = std::atan(fTalpha1); |
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| 1895 | G4double alpha2 = std::atan(fTalpha2); |
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| 1896 | G4double theta = std::atan(std::sqrt(fTthetaCphi*fTthetaCphi+fTthetaSphi*fTthetaSphi)); |
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| 1897 | |
---|
| 1898 | return new G4PolyhedronTrap(fDz, theta, phi, |
---|
| 1899 | fDy1, fDx1, fDx2, alpha1, |
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| 1900 | fDy2, fDx3, fDx4, alpha2); |
---|
| 1901 | } |
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| 1902 | |
---|
| 1903 | G4NURBS* G4Trap::CreateNURBS () const |
---|
| 1904 | { |
---|
| 1905 | // return new G4NURBSbox (fDx, fDy, fDz); |
---|
| 1906 | return 0 ; |
---|
| 1907 | } |
---|