Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/geometry/solids/specific/src/G4TwistBoxSide.cc

Version: [ ReleaseNotes ] [ 1.0 ] [ 1.1 ] [ 2.0 ] [ 3.0 ] [ 3.1 ] [ 3.2 ] [ 4.0 ] [ 4.0.p1 ] [ 4.0.p2 ] [ 4.1 ] [ 4.1.p1 ] [ 5.0 ] [ 5.0.p1 ] [ 5.1 ] [ 5.1.p1 ] [ 5.2 ] [ 5.2.p1 ] [ 5.2.p2 ] [ 6.0 ] [ 6.0.p1 ] [ 6.1 ] [ 6.2 ] [ 6.2.p1 ] [ 6.2.p2 ] [ 7.0 ] [ 7.0.p1 ] [ 7.1 ] [ 7.1.p1 ] [ 8.0 ] [ 8.0.p1 ] [ 8.1 ] [ 8.1.p1 ] [ 8.1.p2 ] [ 8.2 ] [ 8.2.p1 ] [ 8.3 ] [ 8.3.p1 ] [ 8.3.p2 ] [ 9.0 ] [ 9.0.p1 ] [ 9.0.p2 ] [ 9.1 ] [ 9.1.p1 ] [ 9.1.p2 ] [ 9.1.p3 ] [ 9.2 ] [ 9.2.p1 ] [ 9.2.p2 ] [ 9.2.p3 ] [ 9.2.p4 ] [ 9.3 ] [ 9.3.p1 ] [ 9.3.p2 ] [ 9.4 ] [ 9.4.p1 ] [ 9.4.p2 ] [ 9.4.p3 ] [ 9.4.p4 ] [ 9.5 ] [ 9.5.p1 ] [ 9.5.p2 ] [ 9.6 ] [ 9.6.p1 ] [ 9.6.p2 ] [ 9.6.p3 ] [ 9.6.p4 ] [ 10.0 ] [ 10.0.p1 ] [ 10.0.p2 ] [ 10.0.p3 ] [ 10.0.p4 ] [ 10.1 ] [ 10.1.p1 ] [ 10.1.p2 ] [ 10.1.p3 ] [ 10.2 ] [ 10.2.p1 ] [ 10.2.p2 ] [ 10.2.p3 ] [ 10.3 ] [ 10.3.p1 ] [ 10.3.p2 ] [ 10.3.p3 ] [ 10.4 ] [ 10.4.p1 ] [ 10.4.p2 ] [ 10.4.p3 ] [ 10.5 ] [ 10.5.p1 ] [ 10.6 ] [ 10.6.p1 ] [ 10.6.p2 ] [ 10.6.p3 ] [ 10.7 ] [ 10.7.p1 ] [ 10.7.p2 ] [ 10.7.p3 ] [ 10.7.p4 ] [ 11.0 ] [ 11.0.p1 ] [ 11.0.p2 ] [ 11.0.p3, ] [ 11.0.p4 ] [ 11.1 ] [ 11.1.1 ] [ 11.1.2 ] [ 11.1.3 ] [ 11.2 ] [ 11.2.1 ] [ 11.2.2 ] [ 11.3.0 ]

Diff markup

Differences between /geometry/solids/specific/src/G4TwistBoxSide.cc (Version 11.3.0) and /geometry/solids/specific/src/G4TwistBoxSide.cc (Version 10.1.p2)


  1 //                                                  1 //
  2 // *******************************************      2 // ********************************************************************
  3 // * License and Disclaimer                         3 // * License and Disclaimer                                           *
  4 // *                                                4 // *                                                                  *
  5 // * The  Geant4 software  is  copyright of th      5 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
  6 // * the Geant4 Collaboration.  It is provided      6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
  7 // * conditions of the Geant4 Software License      7 // * conditions of the Geant4 Software License,  included in the file *
  8 // * LICENSE and available at  http://cern.ch/      8 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
  9 // * include a list of copyright holders.           9 // * include a list of copyright holders.                             *
 10 // *                                               10 // *                                                                  *
 11 // * Neither the authors of this software syst     11 // * Neither the authors of this software system, nor their employing *
 12 // * institutes,nor the agencies providing fin     12 // * institutes,nor the agencies providing financial support for this *
 13 // * work  make  any representation or  warran     13 // * work  make  any representation or  warranty, express or implied, *
 14 // * regarding  this  software system or assum     14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file      15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitatio     16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                               17 // *                                                                  *
 18 // * This  code  implementation is the result      18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboratio     19 // * technical work of the GEANT4 collaboration.                      *
 20 // * By using,  copying,  modifying or  distri     20 // * By using,  copying,  modifying or  distributing the software (or *
 21 // * any work based  on the software)  you  ag     21 // * any work based  on the software)  you  agree  to acknowledge its *
 22 // * use  in  resulting  scientific  publicati     22 // * use  in  resulting  scientific  publications,  and indicate your *
 23 // * acceptance of all terms of the Geant4 Sof     23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // *******************************************     24 // ********************************************************************
 25 //                                                 25 //
 26 // G4TwistBoxSide implementation               << 
 27 //                                                 26 //
 28 // Author: 18/03/2005 - O.Link (Oliver.Link@ce <<  27 // $Id: G4TwistBoxSide.cc 72937 2013-08-14 13:20:38Z gcosmo $
                                                   >>  28 //
                                                   >>  29 // 
                                                   >>  30 // --------------------------------------------------------------------
                                                   >>  31 // GEANT 4 class source file
                                                   >>  32 //
                                                   >>  33 //
                                                   >>  34 // G4TwistBoxSide.cc
                                                   >>  35 //
                                                   >>  36 // Author:
                                                   >>  37 //
                                                   >>  38 //   18/03/2005 - O.Link (Oliver.Link@cern.ch)
                                                   >>  39 //
 29 // -------------------------------------------     40 // --------------------------------------------------------------------
 30                                                    41 
 31 #include <cmath>                                   42 #include <cmath>
 32                                                    43 
 33 #include "G4TwistBoxSide.hh"                       44 #include "G4TwistBoxSide.hh"
 34 #include "G4PhysicalConstants.hh"                  45 #include "G4PhysicalConstants.hh"
 35 #include "G4JTPolynomialSolver.hh"                 46 #include "G4JTPolynomialSolver.hh"
 36                                                    47 
 37 //============================================     48 //=====================================================================
 38 //* constructors -----------------------------     49 //* constructors ------------------------------------------------------
 39                                                    50 
 40 G4TwistBoxSide::G4TwistBoxSide(const G4String& <<  51 G4TwistBoxSide::G4TwistBoxSide(const G4String     &name,
 41                            G4double      PhiTw     52                            G4double      PhiTwist,    // twist angle
 42                            G4double      pDz,      53                            G4double      pDz,         // half z lenght
 43                            G4double      pThet     54                            G4double      pTheta,      // direction between end planes
 44                            G4double      pPhi,     55                            G4double      pPhi,        // defined by polar and azimutal angles.
 45                            G4double      pDy1,     56                            G4double      pDy1,        // half y length at -pDz
 46                            G4double      pDx1,     57                            G4double      pDx1,        // half x length at -pDz,-pDy
 47                            G4double      pDx2,     58                            G4double      pDx2,        // half x length at -pDz,+pDy
 48                            G4double      pDy2,     59                            G4double      pDy2,        // half y length at +pDz
 49                            G4double      pDx3,     60                            G4double      pDx3,        // half x length at +pDz,-pDy
 50                            G4double      pDx4,     61                            G4double      pDx4,        // half x length at +pDz,+pDy
 51                            G4double      pAlph     62                            G4double      pAlph,       // tilt angle at +pDz
 52                            G4double      Angle     63                            G4double      AngleSide    // parity
 53                                                    64                                                ) : G4VTwistSurface(name)
 54 {                                                  65 {  
 55                                                    66   
 56                                                    67                  
 57   fAxis[0]    = kYAxis; // in local coordinate     68   fAxis[0]    = kYAxis; // in local coordinate system
 58   fAxis[1]    = kZAxis;                            69   fAxis[1]    = kZAxis;
 59   fAxisMin[0] = -kInfinity ;  // Y Axis bounda     70   fAxisMin[0] = -kInfinity ;  // Y Axis boundary
 60   fAxisMax[0] = kInfinity ;   //   depends on      71   fAxisMax[0] = kInfinity ;   //   depends on z !!
 61   fAxisMin[1] = -pDz ;      // Z Axis boundary     72   fAxisMin[1] = -pDz ;      // Z Axis boundary
 62   fAxisMax[1] = pDz ;                              73   fAxisMax[1] = pDz ;
 63                                                    74   
 64   fDx1  = pDx1 ;                                   75   fDx1  = pDx1 ;
 65   fDx2  = pDx2 ;  // box                           76   fDx2  = pDx2 ;  // box
 66   fDx3  = pDx3 ;                                   77   fDx3  = pDx3 ;
 67   fDx4  = pDx4 ;  // box                           78   fDx4  = pDx4 ;  // box
 68                                                    79 
 69   // this is an overhead. But the parameter na     80   // this is an overhead. But the parameter naming scheme fits to the other surfaces.
 70                                                    81  
 71   if ( fDx1 != fDx2 || fDx3 != fDx4 )          <<  82   if ( ! (fDx1 == fDx2 && fDx3 == fDx4 ) ) {
 72   {                                            << 
 73     std::ostringstream message;                    83     std::ostringstream message;
 74     message << "TwistedTrapBoxSide is not used     84     message << "TwistedTrapBoxSide is not used as a the side of a box: "
 75             << GetName() << G4endl                 85             << GetName() << G4endl
 76             << "        Not a box !";              86             << "        Not a box !";
 77     G4Exception("G4TwistBoxSide::G4TwistBoxSid     87     G4Exception("G4TwistBoxSide::G4TwistBoxSide()", "GeomSolids0002",
 78                 FatalException, message);          88                 FatalException, message);
 79   }                                                89   }
 80                                                    90  
 81   fDy1   = pDy1 ;                                  91   fDy1   = pDy1 ;
 82   fDy2   = pDy2 ;                                  92   fDy2   = pDy2 ;
 83                                                    93 
 84   fDz   = pDz ;                                    94   fDz   = pDz ;
 85                                                    95 
 86   fAlph = pAlph  ;                                 96   fAlph = pAlph  ;
 87   fTAlph = std::tan(fAlph) ;                       97   fTAlph = std::tan(fAlph) ;
 88                                                    98 
 89   fTheta = pTheta ;                                99   fTheta = pTheta ;
 90   fPhi   = pPhi ;                                 100   fPhi   = pPhi ;
 91                                                   101 
 92   // precalculate frequently used parameters   << 102  // precalculate frequently used parameters
 93                                                << 
 94   fDx4plus2  = fDx4 + fDx2 ;                      103   fDx4plus2  = fDx4 + fDx2 ;
 95   fDx4minus2 = fDx4 - fDx2 ;                      104   fDx4minus2 = fDx4 - fDx2 ;
 96   fDx3plus1  = fDx3 + fDx1 ;                      105   fDx3plus1  = fDx3 + fDx1 ; 
 97   fDx3minus1 = fDx3 - fDx1 ;                      106   fDx3minus1 = fDx3 - fDx1 ;
 98   fDy2plus1  = fDy2 + fDy1 ;                      107   fDy2plus1  = fDy2 + fDy1 ;
 99   fDy2minus1 = fDy2 - fDy1 ;                      108   fDy2minus1 = fDy2 - fDy1 ;
100                                                   109 
101   fa1md1 = 2*fDx2 - 2*fDx1 ;                   << 110   fa1md1 = 2*fDx2 - 2*fDx1  ; 
102   fa2md2 = 2*fDx4 - 2*fDx3 ;                      111   fa2md2 = 2*fDx4 - 2*fDx3 ;
103                                                   112 
104                                                   113 
105   fPhiTwist = PhiTwist ;     // dphi              114   fPhiTwist = PhiTwist ;     // dphi
106   fAngleSide = AngleSide ;  // 0,90,180,270 de    115   fAngleSide = AngleSide ;  // 0,90,180,270 deg
107                                                   116 
108   fdeltaX = 2*fDz * std::tan(fTheta) * std::co << 117   fdeltaX = 2 * fDz * std::tan(fTheta) * std::cos(fPhi)  ;  // dx in surface equation
109   fdeltaY = 2*fDz * std::tan(fTheta) * std::si << 118   fdeltaY = 2 * fDz * std::tan(fTheta) * std::sin(fPhi)  ;  // dy in surface equation
110                                                   119   
111   fRot.rotateZ( AngleSide ) ;                     120   fRot.rotateZ( AngleSide ) ; 
112                                                   121   
113   fTrans.set(0, 0, 0);  // No Translation         122   fTrans.set(0, 0, 0);  // No Translation
114   fIsValidNorm = false;                           123   fIsValidNorm = false;
115                                                   124   
116   SetCorners();                                << 125   SetCorners() ;
117   SetBoundaries();                             << 126   SetBoundaries() ;
                                                   >> 127 
118 }                                                 128 }
119                                                   129 
120                                                   130 
121 //============================================    131 //=====================================================================
122 //* Fake default constructor -----------------    132 //* Fake default constructor ------------------------------------------
123                                                   133 
124 G4TwistBoxSide::G4TwistBoxSide( __void__& a )     134 G4TwistBoxSide::G4TwistBoxSide( __void__& a )
125   : G4VTwistSurface(a)                         << 135   : G4VTwistSurface(a), fTheta(0.), fPhi(0.), fDy1(0.), fDx1(0.), fDx2(0.), 
                                                   >> 136     fDy2(0.), fDx3(0.), fDx4(0.), fDz(0.), fAlph(0.), fTAlph(0.), fPhiTwist(0.), 
                                                   >> 137     fAngleSide(0.), fdeltaX(0.), fdeltaY(0.), fDx4plus2(0.), fDx4minus2(0.), 
                                                   >> 138     fDx3plus1(0.), fDx3minus1(0.), fDy2plus1(0.), fDy2minus1(0.), fa1md1(0.), 
                                                   >> 139     fa2md2(0.)
126 {                                                 140 {
127 }                                                 141 }
128                                                   142 
129                                                   143 
130 //============================================    144 //=====================================================================
131 //* destructor -------------------------------    145 //* destructor --------------------------------------------------------
132                                                   146 
133 G4TwistBoxSide::~G4TwistBoxSide() = default;   << 147 G4TwistBoxSide::~G4TwistBoxSide()
                                                   >> 148 {
                                                   >> 149 }
134                                                   150 
135 //============================================    151 //=====================================================================
136 //* GetNormal --------------------------------    152 //* GetNormal ---------------------------------------------------------
137                                                   153 
138 G4ThreeVector G4TwistBoxSide::GetNormal(const  << 154 G4ThreeVector G4TwistBoxSide::GetNormal(const G4ThreeVector &tmpxx, 
139                                                << 155                                                 G4bool isGlobal) 
140 {                                                 156 {
141    // GetNormal returns a normal vector at a s    157    // GetNormal returns a normal vector at a surface (or very close
142    // to surface) point at tmpxx.                 158    // to surface) point at tmpxx.
143    // If isGlobal=true, it returns the normal     159    // If isGlobal=true, it returns the normal in global coordinate.
144    //                                             160    //
145                                                   161 
146    G4ThreeVector xx;                              162    G4ThreeVector xx;
147    if (isGlobal)                               << 163    if (isGlobal) {
148    {                                           << 
149       xx = ComputeLocalPoint(tmpxx);              164       xx = ComputeLocalPoint(tmpxx);
150       if ((xx - fCurrentNormal.p).mag() < 0.5  << 165       if ((xx - fCurrentNormal.p).mag() < 0.5 * kCarTolerance) {
151       {                                        << 
152          return ComputeGlobalDirection(fCurren    166          return ComputeGlobalDirection(fCurrentNormal.normal);
153       }                                           167       }
154    }                                           << 168    } else {
155    else                                        << 
156    {                                           << 
157       xx = tmpxx;                                 169       xx = tmpxx;
158       if (xx == fCurrentNormal.p)              << 170       if (xx == fCurrentNormal.p) {
159       {                                        << 
160          return fCurrentNormal.normal;            171          return fCurrentNormal.normal;
161       }                                           172       }
162    }                                              173    }
163                                                   174 
164    G4double phi ;                                 175    G4double phi ;
165    G4double u ;                                   176    G4double u ;
166                                                   177 
167    GetPhiUAtX(xx,phi,u) ;   // phi,u for point    178    GetPhiUAtX(xx,phi,u) ;   // phi,u for point xx close to surface 
168                                                   179 
169    G4ThreeVector normal = NormAng(phi,u) ;  // << 180    G4ThreeVector normal =  NormAng(phi,u) ;  // the normal vector at phi,u
170                                                   181 
171 #ifdef G4TWISTDEBUG                               182 #ifdef G4TWISTDEBUG
172    G4cout  << "normal vector = " << normal <<     183    G4cout  << "normal vector = " << normal << G4endl ;
173    G4cout << "phi = " << phi << " , u = " << u    184    G4cout << "phi = " << phi << " , u = " << u << G4endl ;
174 #endif                                            185 #endif
175                                                   186 
176    //    normal = normal/normal.mag() ;           187    //    normal = normal/normal.mag() ;
177                                                   188 
178    if (isGlobal)                               << 189    if (isGlobal) {
179    {                                           << 
180       fCurrentNormal.normal = ComputeGlobalDir    190       fCurrentNormal.normal = ComputeGlobalDirection(normal.unit());
181    }                                           << 191    } else {
182    else                                        << 
183    {                                           << 
184       fCurrentNormal.normal = normal.unit();      192       fCurrentNormal.normal = normal.unit();
185    }                                              193    }
186    return fCurrentNormal.normal;                  194    return fCurrentNormal.normal;
187 }                                                 195 }
188                                                   196 
189 //============================================    197 //=====================================================================
190 //* DistanceToSurface ------------------------    198 //* DistanceToSurface -------------------------------------------------
191                                                   199 
192 G4int G4TwistBoxSide::DistanceToSurface(const  << 200 G4int G4TwistBoxSide::DistanceToSurface(const G4ThreeVector &gp,
193                                         const  << 201                                         const G4ThreeVector &gv,
194                                                   202                                               G4ThreeVector  gxx[],
195                                                   203                                               G4double       distance[],
196                                                   204                                               G4int          areacode[],
197                                                   205                                               G4bool         isvalid[],
198                                                   206                                               EValidate      validate)
199 {                                                 207 {
200                                                   208 
201   static const G4double pihalf = pi/2 ;           209   static const G4double pihalf = pi/2 ;
202   const G4double ctol = 0.5 * kCarTolerance;      210   const G4double ctol = 0.5 * kCarTolerance;
203                                                   211 
204   G4bool IsParallel = false ;                     212   G4bool IsParallel = false ;
205   G4bool IsConverged = false ;                 << 213   G4bool IsConverged =  false ;
206                                                   214 
207   G4int nxx = 0 ;  // number of physical solut    215   G4int nxx = 0 ;  // number of physical solutions
208                                                   216 
209   fCurStatWithV.ResetfDone(validate, &gp, &gv)    217   fCurStatWithV.ResetfDone(validate, &gp, &gv);
210                                                   218 
211   if (fCurStatWithV.IsDone())                  << 219   if (fCurStatWithV.IsDone()) {
212   {                                            << 220     G4int i;
213     for (G4int i=0; i<fCurStatWithV.GetNXX();  << 221     for (i=0; i<fCurStatWithV.GetNXX(); i++) {
214     {                                          << 
215       gxx[i] = fCurStatWithV.GetXX(i);            222       gxx[i] = fCurStatWithV.GetXX(i);
216       distance[i] = fCurStatWithV.GetDistance(    223       distance[i] = fCurStatWithV.GetDistance(i);
217       areacode[i] = fCurStatWithV.GetAreacode(    224       areacode[i] = fCurStatWithV.GetAreacode(i);
218       isvalid[i]  = fCurStatWithV.IsValid(i);     225       isvalid[i]  = fCurStatWithV.IsValid(i);
219     }                                             226     }
220     return fCurStatWithV.GetNXX();                227     return fCurStatWithV.GetNXX();
221   }                                            << 228   } else {
222   else  // initialize                          << 229    
223   {                                            << 230    // initialize
224     for (G4int i=0; i<G4VSURFACENXX ; ++i)     << 231     G4int i;
225     {                                          << 232     for (i=0; i<G4VSURFACENXX ; i++) {
226       distance[i] = kInfinity;                    233       distance[i] = kInfinity;
227       areacode[i] = sOutside;                     234       areacode[i] = sOutside;
228       isvalid[i]  = false;                        235       isvalid[i]  = false;
229       gxx[i].set(kInfinity, kInfinity, kInfini    236       gxx[i].set(kInfinity, kInfinity, kInfinity);
230     }                                             237     }
231   }                                               238   }
232                                                   239 
233   G4ThreeVector p = ComputeLocalPoint(gp);        240   G4ThreeVector p = ComputeLocalPoint(gp);
234   G4ThreeVector v = ComputeLocalDirection(gv);    241   G4ThreeVector v = ComputeLocalDirection(gv);
235                                                   242   
236 #ifdef G4TWISTDEBUG                               243 #ifdef G4TWISTDEBUG
237   G4cout << "Local point p = " << p << G4endl     244   G4cout << "Local point p = " << p << G4endl ;
238   G4cout << "Local direction v = " << v << G4e    245   G4cout << "Local direction v = " << v << G4endl ; 
239 #endif                                            246 #endif
240                                                   247 
241   G4double phi=0.,u=0.,q=0.;  // parameters       248   G4double phi=0.,u=0.,q=0.;  // parameters
242                                                   249 
243   // temporary variables                          250   // temporary variables
244                                                   251 
245   G4double      tmpdist = kInfinity ;             252   G4double      tmpdist = kInfinity ;
246   G4ThreeVector tmpxx;                            253   G4ThreeVector tmpxx;
247   G4int         tmpareacode = sOutside ;          254   G4int         tmpareacode = sOutside ;
248   G4bool        tmpisvalid  = false ;             255   G4bool        tmpisvalid  = false ;
249                                                   256 
250   std::vector<Intersection> xbuf ;                257   std::vector<Intersection> xbuf ;
251   Intersection xbuftmp ;                          258   Intersection xbuftmp ;
252                                                   259   
253   // prepare some variables for the intersecti    260   // prepare some variables for the intersection finder
254                                                   261 
255   G4double L = 2*fDz ;                            262   G4double L = 2*fDz ;
256                                                   263 
257   G4double phixz = fPhiTwist * ( p.x() * v.z()    264   G4double phixz = fPhiTwist * ( p.x() * v.z() - p.z() * v.x() ) ;
258   G4double phiyz = fPhiTwist * ( p.y() * v.z()    265   G4double phiyz = fPhiTwist * ( p.y() * v.z() - p.z() * v.y() ) ;
259                                                   266 
260   // special case vz = 0                          267   // special case vz = 0
261                                                   268 
262   if ( v.z() == 0. )                           << 269   if ( v.z() == 0. ) {         
263   {                                            << 270 
264     if ( (std::fabs(p.z()) <= L) && (fPhiTwist << 271     if ( (std::fabs(p.z()) <= L) && fPhiTwist ) {  // intersection possible in z
265     {                                          << 272       
266       phi = p.z() * fPhiTwist / L ;  // phi is    273       phi = p.z() * fPhiTwist / L ;  // phi is determined by the z-position 
267                                                   274 
268       q = (2.* fPhiTwist*((v.x() - fTAlph*v.y(    275       q = (2.* fPhiTwist*((v.x() - fTAlph*v.y())*std::cos(phi)
269                              + (fTAlph*v.x() +    276                              + (fTAlph*v.x() + v.y())*std::sin(phi)));
270                                                   277       
271       if (q != 0.0)                            << 278       if (q) {
272       {                                        << 
273         u = (2*(-(fdeltaY*phi*v.x()) + fPhiTwi    279         u = (2*(-(fdeltaY*phi*v.x()) + fPhiTwist*p.y()*v.x()
274                 + fdeltaX*phi*v.y() - fPhiTwis    280                 + fdeltaX*phi*v.y() - fPhiTwist*p.x()*v.y())
275              + (fDx4plus2*fPhiTwist + 2*fDx4mi    281              + (fDx4plus2*fPhiTwist + 2*fDx4minus2*phi)
276              * (v.y()*std::cos(phi) - v.x()*st    282              * (v.y()*std::cos(phi) - v.x()*std::sin(phi))) / q;
277       }                                           283       }
                                                   >> 284 
278       xbuftmp.phi = phi ;                         285       xbuftmp.phi = phi ;
279       xbuftmp.u = u ;                             286       xbuftmp.u = u ;
280       xbuftmp.areacode = sOutside ;               287       xbuftmp.areacode = sOutside ;
281       xbuftmp.distance = kInfinity ;              288       xbuftmp.distance = kInfinity ;
282       xbuftmp.isvalid = false ;                   289       xbuftmp.isvalid = false ;
283                                                   290 
284       xbuf.push_back(xbuftmp) ;  // store it t    291       xbuf.push_back(xbuftmp) ;  // store it to xbuf
                                                   >> 292 
285     }                                             293     }
286     else                         // no interse << 294 
287     {                                          << 295     else {                        // no intersection possible
                                                   >> 296 
288       distance[0] = kInfinity;                    297       distance[0] = kInfinity;
289       gxx[0].set(kInfinity,kInfinity,kInfinity    298       gxx[0].set(kInfinity,kInfinity,kInfinity);
290       isvalid[0] = false ;                        299       isvalid[0] = false ;
291       areacode[0] = sOutside ;                    300       areacode[0] = sOutside ;
292       fCurStatWithV.SetCurrentStatus(0, gxx[0]    301       fCurStatWithV.SetCurrentStatus(0, gxx[0], distance[0],
293                                      areacode[    302                                      areacode[0], isvalid[0],
294                                      0, valida    303                                      0, validate, &gp, &gv);
295                                                   304       
296       return 0;                                   305       return 0;
297     }  // end std::fabs(p.z() <= L             << 306 
                                                   >> 307 
                                                   >> 308     }  // end std::fabs(p.z() <= L 
                                                   >> 309 
298   } // end v.z() == 0                             310   } // end v.z() == 0
299   else  // general solution for non-zero vz    << 311   
300   {                                            << 312 
                                                   >> 313   // general solution for non-zero vz
                                                   >> 314 
                                                   >> 315   else {
                                                   >> 316 
301     G4double c[8],srd[7],si[7] ;                  317     G4double c[8],srd[7],si[7] ;  
302                                                   318 
303     c[7] = -14400*(-2*phixz + 2*fTAlph*phiyz +    319     c[7] = -14400*(-2*phixz + 2*fTAlph*phiyz + fDx4plus2*fPhiTwist*v.z()) ;
304     c[6] = 28800*(phiyz + 2*fDz*v.x() - (fdelt    320     c[6] = 28800*(phiyz + 2*fDz*v.x() - (fdeltaX + fDx4minus2)*v.z() + fTAlph*(phixz - 2*fDz*v.y() + fdeltaY*v.z())) ;
305     c[5] = -1200*(10*phixz - 48*fDz*v.y() + 24    321     c[5] = -1200*(10*phixz - 48*fDz*v.y() + 24*fdeltaY*v.z() + fDx4plus2*fPhiTwist*v.z() - 2*fTAlph*(5*phiyz + 24*fDz*v.x() - 12*fdeltaX*v.z())) ;
306     c[4] = -2400*(phiyz + 10*fDz*v.x() - 5*fde    322     c[4] = -2400*(phiyz + 10*fDz*v.x() - 5*fdeltaX*v.z() + fDx4minus2*v.z() + fTAlph*(phixz - 10*fDz*v.y() + 5*fdeltaY*v.z())) ;
307     c[3] = 24*(2*phixz - 200*fDz*v.y() + 100*f    323     c[3] = 24*(2*phixz - 200*fDz*v.y() + 100*fdeltaY*v.z() - fDx4plus2*fPhiTwist*v.z() - 2*fTAlph*(phiyz + 100*fDz*v.x() - 50*fdeltaX*v.z())) ;
308     c[2] = -16*(7*fTAlph* phixz + 7*phiyz - 6*    324     c[2] = -16*(7*fTAlph* phixz + 7*phiyz - 6*fDz*v.x() + 6*fDz*fTAlph*v.y() + 3*(fdeltaX + fDx4minus2 - fdeltaY*fTAlph)*v.z()) ;
309     c[1] = 4*(9*phixz - 9*fTAlph*phiyz - 56*fD    325     c[1] = 4*(9*phixz - 9*fTAlph*phiyz - 56*fDz*fTAlph*v.x() - 56*fDz*v.y() + 28*(fdeltaY + fdeltaX*fTAlph)*v.z()) ;
310     c[0] = 36*(2* fDz*(v.x() - fTAlph*v.y()) -    326     c[0] = 36*(2* fDz*(v.x() - fTAlph*v.y()) - fdeltaX*v.z() + fdeltaY*fTAlph*v.z()) ;
311                                                   327 
                                                   >> 328 
312 #ifdef G4TWISTDEBUG                               329 #ifdef G4TWISTDEBUG
313     G4cout << "coef = " << c[0] << " "            330     G4cout << "coef = " << c[0] << " " 
314            <<  c[1] << " "                        331            <<  c[1] << " "  
315            <<  c[2] << " "                        332            <<  c[2] << " "  
316            <<  c[3] << " "                        333            <<  c[3] << " "  
317            <<  c[4] << " "                        334            <<  c[4] << " "  
318            <<  c[5] << " "                        335            <<  c[5] << " "  
319            <<  c[6] << " "                        336            <<  c[6] << " "  
320            <<  c[7] << G4endl ;                   337            <<  c[7] << G4endl ;
321 #endif                                            338 #endif    
322                                                   339 
323     G4JTPolynomialSolver trapEq ;                 340     G4JTPolynomialSolver trapEq ;
324     G4int num = trapEq.FindRoots(c,7,srd,si);     341     G4int num = trapEq.FindRoots(c,7,srd,si);
                                                   >> 342   
325                                                   343 
326     for (G4int i = 0 ; i<num ; ++i )    // loo << 344     for (G4int i = 0 ; i<num ; i++ ) {  // loop over all mathematical solutions
327     {                                          << 345       if ( (si[i]==0.0) && fPhiTwist ) {  // only real solutions
328       if ( (si[i]==0.0) && (fPhiTwist != 0.0)  << 
329       {                                        << 
330 #ifdef G4TWISTDEBUG                               346 #ifdef G4TWISTDEBUG
331         G4cout << "Solution " << i << " : " <<    347         G4cout << "Solution " << i << " : " << srd[i] << G4endl ;
332 #endif                                            348 #endif
333         phi = std::fmod(srd[i], pihalf) ;      << 349         phi = std::fmod(srd[i] , pihalf)  ;
334                                                   350 
335         u   = (2*phiyz + 4*fDz*phi*v.y() - 2*f    351         u   = (2*phiyz + 4*fDz*phi*v.y() - 2*fdeltaY*phi*v.z()
336              - fDx4plus2*fPhiTwist*v.z()*std::    352              - fDx4plus2*fPhiTwist*v.z()*std::sin(phi)
337              - 2*fDx4minus2*phi*v.z()*std::sin    353              - 2*fDx4minus2*phi*v.z()*std::sin(phi))
338              /(2*fPhiTwist*v.z()*std::cos(phi)    354              /(2*fPhiTwist*v.z()*std::cos(phi)
339                + 2*fPhiTwist*fTAlph*v.z()*std:    355                + 2*fPhiTwist*fTAlph*v.z()*std::sin(phi)) ;
340                                                   356 
341         xbuftmp.phi = phi ;                       357         xbuftmp.phi = phi ;
342         xbuftmp.u = u ;                           358         xbuftmp.u = u ;
343         xbuftmp.areacode = sOutside ;             359         xbuftmp.areacode = sOutside ;
344         xbuftmp.distance = kInfinity ;            360         xbuftmp.distance = kInfinity ;
345         xbuftmp.isvalid = false ;                 361         xbuftmp.isvalid = false ;
346                                                   362         
347         xbuf.push_back(xbuftmp) ;  // store it    363         xbuf.push_back(xbuftmp) ;  // store it to xbuf
348                                                   364       
349 #ifdef G4TWISTDEBUG                               365 #ifdef G4TWISTDEBUG
350         G4cout << "solution " << i << " = " <<    366         G4cout << "solution " << i << " = " << phi << " , " << u  << G4endl ;
351 #endif                                            367 #endif
                                                   >> 368 
352       }  // end if real solution                  369       }  // end if real solution
353     }  // end loop i                              370     }  // end loop i
354   }  // end general case                       << 371     
                                                   >> 372   }    // end general case
355                                                   373 
356                                                   374 
357   nxx = (G4int)xbuf.size() ;  // save the numb << 375   nxx = xbuf.size() ;  // save the number of  solutions
358                                                   376 
359   G4ThreeVector xxonsurface  ;       // point     377   G4ThreeVector xxonsurface  ;       // point on surface
360   G4ThreeVector surfacenormal  ;     // normal    378   G4ThreeVector surfacenormal  ;     // normal vector  
361   G4double deltaX  ;                 // distan << 379   G4double deltaX  ;                 // distance between intersection point and point on surface
362                                      // point  << 
363   G4double theta  ;                  // angle     380   G4double theta  ;                  // angle between track and surfacenormal
364   G4double factor ;                  // a scal    381   G4double factor ;                  // a scaling factor
365   G4int maxint = 30 ;                // number    382   G4int maxint = 30 ;                // number of iterations
366                                                   383 
367                                                   384 
368   for (auto & k : xbuf)                        << 385   for ( size_t k = 0 ; k<xbuf.size() ; k++ ) {
369   {                                            << 386 
370 #ifdef G4TWISTDEBUG                               387 #ifdef G4TWISTDEBUG
371     G4cout << "Solution " << k << " : "           388     G4cout << "Solution " << k << " : " 
372            << "reconstructed phiR = " << xbuf[    389            << "reconstructed phiR = " << xbuf[k].phi
373            << ", uR = " << xbuf[k].u << G4endl    390            << ", uR = " << xbuf[k].u << G4endl ; 
374 #endif                                            391 #endif
375                                                   392     
376     phi = k.phi ;  // get the stored values fo << 393     phi = xbuf[k].phi ;  // get the stored values for phi and u
377     u = k.u ;                                  << 394     u = xbuf[k].u ;
378                                                   395 
379     IsConverged = false ;   // no convergence     396     IsConverged = false ;   // no convergence at the beginning
380                                                   397     
381     for ( G4int i = 1 ; i<maxint ; ++i )       << 398     for ( G4int i = 1 ; i<maxint ; i++ ) {
382     {                                          << 399       
383       xxonsurface = SurfacePoint(phi,u) ;         400       xxonsurface = SurfacePoint(phi,u) ;
384       surfacenormal = NormAng(phi,u) ;            401       surfacenormal = NormAng(phi,u) ;
385       tmpdist = DistanceToPlaneWithV(p, v, xxo    402       tmpdist = DistanceToPlaneWithV(p, v, xxonsurface, surfacenormal, tmpxx); 
386       deltaX = ( tmpxx - xxonsurface ).mag() ;    403       deltaX = ( tmpxx - xxonsurface ).mag() ; 
387       theta = std::fabs(std::acos(v*surfacenor    404       theta = std::fabs(std::acos(v*surfacenormal) - pihalf) ;
388       if ( theta < 0.001 )                     << 405       if ( theta < 0.001 ) { 
389       {                                        << 
390         factor = 50 ;                             406         factor = 50 ;
391         IsParallel = true ;                       407         IsParallel = true ;
392       }                                           408       }
393       else                                     << 409       else {
394       {                                        << 
395         factor = 1 ;                              410         factor = 1 ;
396       }                                           411       }
397                                                   412 
398 #ifdef G4TWISTDEBUG                               413 #ifdef G4TWISTDEBUG
399       G4cout << "Step i = " << i << ", distanc    414       G4cout << "Step i = " << i << ", distance = " << tmpdist << ", " << deltaX << G4endl ;
400       G4cout << "X = " << tmpxx << G4endl ;       415       G4cout << "X = " << tmpxx << G4endl ;
401 #endif                                            416 #endif
402                                                   417       
403       GetPhiUAtX(tmpxx, phi, u) ; // the new p    418       GetPhiUAtX(tmpxx, phi, u) ; // the new point xx is accepted and phi/u replaced
404                                                   419       
405 #ifdef G4TWISTDEBUG                               420 #ifdef G4TWISTDEBUG
406       G4cout << "approximated phi = " << phi <    421       G4cout << "approximated phi = " << phi << ", u = " << u << G4endl ; 
407 #endif                                            422 #endif
408                                                   423       
409       if ( deltaX <= factor*ctol ) { IsConverg    424       if ( deltaX <= factor*ctol ) { IsConverged = true ; break ; }
410                                                   425       
411     }  // end iterative loop (i)                  426     }  // end iterative loop (i)
                                                   >> 427     
412                                                   428 
413     if ( std::fabs(tmpdist)<ctol ) tmpdist = 0 << 429     // new code  21.09.05 O.Link
                                                   >> 430     if ( std::fabs(tmpdist)<ctol ) tmpdist = 0 ; 
414                                                   431 
415 #ifdef G4TWISTDEBUG                               432 #ifdef G4TWISTDEBUG
416     G4cout << "refined solution "  << phi << "    433     G4cout << "refined solution "  << phi << " , " << u  <<  G4endl ;
417     G4cout << "distance = " << tmpdist << G4en    434     G4cout << "distance = " << tmpdist << G4endl ;
418     G4cout << "local X = " << tmpxx << G4endl     435     G4cout << "local X = " << tmpxx << G4endl ;
419 #endif                                            436 #endif
420                                                   437     
421     tmpisvalid = false ;  // init                 438     tmpisvalid = false ;  // init 
422                                                   439 
423     if ( IsConverged )                         << 440     if ( IsConverged ) {
424     {                                          << 441       
425       if (validate == kValidateWithTol)        << 442       if (validate == kValidateWithTol) {
426       {                                        << 
427         tmpareacode = GetAreaCode(tmpxx);         443         tmpareacode = GetAreaCode(tmpxx);
428         if (!IsOutside(tmpareacode))           << 444         if (!IsOutside(tmpareacode)) {
429         {                                      << 
430           if (tmpdist >= 0) tmpisvalid = true;    445           if (tmpdist >= 0) tmpisvalid = true;
431         }                                         446         }
432       }                                        << 447       } else if (validate == kValidateWithoutTol) {
433       else if (validate == kValidateWithoutTol << 
434       {                                        << 
435         tmpareacode = GetAreaCode(tmpxx, false    448         tmpareacode = GetAreaCode(tmpxx, false);
436         if (IsInside(tmpareacode))             << 449         if (IsInside(tmpareacode)) {
437         {                                      << 
438           if (tmpdist >= 0) tmpisvalid = true;    450           if (tmpdist >= 0) tmpisvalid = true;
439         }                                         451         }
440       }                                        << 452       } else { // kDontValidate
441       else   // kDontValidate                  << 
442       {                                        << 
443         G4Exception("G4TwistBoxSide::DistanceT    453         G4Exception("G4TwistBoxSide::DistanceToSurface()",
444                     "GeomSolids0001", FatalExc    454                     "GeomSolids0001", FatalException,
445                     "Feature NOT implemented !    455                     "Feature NOT implemented !");
446       }                                           456       }
447     }                                          << 457 
448     else                                       << 458     } 
449     {                                          << 459     else {
450       tmpdist = kInfinity;     // no convergen    460       tmpdist = kInfinity;     // no convergence after 10 steps 
451       tmpisvalid = false ;     // solution is     461       tmpisvalid = false ;     // solution is not vaild
452     }                                             462     }  
453                                                   463 
                                                   >> 464 
454     // store the found values                     465     // store the found values 
455     k.xx = tmpxx ;                             << 466     xbuf[k].xx = tmpxx ;
456     k.distance = tmpdist ;                     << 467     xbuf[k].distance = tmpdist ;
457     k.areacode = tmpareacode ;                 << 468     xbuf[k].areacode = tmpareacode ;
458     k.isvalid = tmpisvalid ;                   << 469     xbuf[k].isvalid = tmpisvalid ;
                                                   >> 470 
459                                                   471 
460   }  // end loop over physical solutions (vari    472   }  // end loop over physical solutions (variable k)
461                                                   473 
                                                   >> 474 
462   std::sort(xbuf.begin() , xbuf.end(), Distanc    475   std::sort(xbuf.begin() , xbuf.end(), DistanceSort ) ;  // sorting
463                                                   476 
464 #ifdef G4TWISTDEBUG                               477 #ifdef G4TWISTDEBUG
465   G4cout << G4endl << "list xbuf after sorting    478   G4cout << G4endl << "list xbuf after sorting : " << G4endl ;
466   G4cout << G4endl << G4endl ;                    479   G4cout << G4endl << G4endl ;
467 #endif                                            480 #endif
468                                                   481 
                                                   >> 482 
469   // erase identical intersection (within kCar    483   // erase identical intersection (within kCarTolerance) 
470   xbuf.erase(std::unique(xbuf.begin(),xbuf.end << 484   xbuf.erase( std::unique(xbuf.begin(), xbuf.end() , EqualIntersection ) , xbuf.end() ) ;
                                                   >> 485 
471                                                   486 
472   // add guesses                                  487   // add guesses
473                                                   488 
474   auto nxxtmp = (G4int)xbuf.size() ;           << 489   G4int nxxtmp = xbuf.size() ;
                                                   >> 490 
                                                   >> 491   if ( nxxtmp<2 || IsParallel  ) {
475                                                   492 
476   if ( nxxtmp<2 || IsParallel  )               << 
477   {                                            << 
478     // positive end                               493     // positive end
479 #ifdef G4TWISTDEBUG                               494 #ifdef G4TWISTDEBUG
480     G4cout << "add guess at +z/2 .. " << G4end    495     G4cout << "add guess at +z/2 .. " << G4endl ;
481 #endif                                            496 #endif
482                                                   497 
483     phi = fPhiTwist/2 ;                           498     phi = fPhiTwist/2 ;
484     u   = 0. ;                                 << 499     u   = 0 ;
                                                   >> 500 
                                                   >> 501     
                                                   >> 502      
485     xbuftmp.phi = phi ;                           503     xbuftmp.phi = phi ;
486     xbuftmp.u = u ;                               504     xbuftmp.u = u ;
487     xbuftmp.areacode = sOutside ;                 505     xbuftmp.areacode = sOutside ;
488     xbuftmp.distance = kInfinity ;                506     xbuftmp.distance = kInfinity ;
489     xbuftmp.isvalid = false ;                     507     xbuftmp.isvalid = false ;
490                                                   508     
491     xbuf.push_back(xbuftmp) ;  // store it to     509     xbuf.push_back(xbuftmp) ;  // store it to xbuf
492                                                   510 
                                                   >> 511 
493 #ifdef G4TWISTDEBUG                               512 #ifdef G4TWISTDEBUG
494     G4cout << "add guess at -z/2 .. " << G4end    513     G4cout << "add guess at -z/2 .. " << G4endl ;
495 #endif                                            514 #endif
496                                                   515 
497     phi = -fPhiTwist/2 ;                          516     phi = -fPhiTwist/2 ;
498     u   = 0. ;                                 << 517     u   = 0 ;
499                                                   518 
500     xbuftmp.phi = phi ;                           519     xbuftmp.phi = phi ;
501     xbuftmp.u = u ;                               520     xbuftmp.u = u ;
502     xbuftmp.areacode = sOutside ;                 521     xbuftmp.areacode = sOutside ;
503     xbuftmp.distance = kInfinity ;                522     xbuftmp.distance = kInfinity ;
504     xbuftmp.isvalid = false ;                     523     xbuftmp.isvalid = false ;
505                                                   524     
506     xbuf.push_back(xbuftmp) ;  // store it to     525     xbuf.push_back(xbuftmp) ;  // store it to xbuf
507                                                   526 
508     for ( std::size_t k = nxxtmp ; k<xbuf.size << 527     for ( size_t k = nxxtmp ; k<xbuf.size() ; k++ ) {
509     {                                          << 528 
510 #ifdef G4TWISTDEBUG                               529 #ifdef G4TWISTDEBUG
511       G4cout << "Solution " << k << " : "         530       G4cout << "Solution " << k << " : " 
512              << "reconstructed phiR = " << xbu    531              << "reconstructed phiR = " << xbuf[k].phi
513              << ", uR = " << xbuf[k].u << G4en    532              << ", uR = " << xbuf[k].u << G4endl ; 
514 #endif                                            533 #endif
515                                                   534       
516       phi = xbuf[k].phi ;  // get the stored v    535       phi = xbuf[k].phi ;  // get the stored values for phi and u
517       u   = xbuf[k].u ;                           536       u   = xbuf[k].u ;
518                                                   537 
519       IsConverged = false ;   // no convergenc    538       IsConverged = false ;   // no convergence at the beginning
520                                                   539       
521       for ( G4int i = 1 ; i<maxint ; ++i )     << 540       for ( G4int i = 1 ; i<maxint ; i++ ) {
522       {                                        << 541         
523         xxonsurface = SurfacePoint(phi,u) ;       542         xxonsurface = SurfacePoint(phi,u) ;
524         surfacenormal = NormAng(phi,u) ;          543         surfacenormal = NormAng(phi,u) ;
525         tmpdist = DistanceToPlaneWithV(p, v, x << 544         tmpdist = DistanceToPlaneWithV(p, v, xxonsurface, surfacenormal, tmpxx); 
526         deltaX = ( tmpxx - xxonsurface ).mag()    545         deltaX = ( tmpxx - xxonsurface ).mag() ; 
527         theta = std::fabs(std::acos(v*surfacen    546         theta = std::fabs(std::acos(v*surfacenormal) - pihalf) ;
528         if ( theta < 0.001 )                   << 547         if ( theta < 0.001 ) { 
529         {                                      << 
530           factor = 50 ;                           548           factor = 50 ;    
531         }                                         549         }
532         else                                   << 550         else {
533         {                                      << 
534           factor = 1 ;                            551           factor = 1 ;
535         }                                         552         }
536                                                   553         
537 #ifdef G4TWISTDEBUG                               554 #ifdef G4TWISTDEBUG
538         G4cout << "Step i = " << i << ", dista << 555         G4cout << "Step i = " << i << ", distance = " << tmpdist << ", " << deltaX << G4endl ;
539                << tmpdist << ", " << deltaX << << 
540         G4cout << "X = " << tmpxx << G4endl ;     556         G4cout << "X = " << tmpxx << G4endl ;
541 #endif                                            557 #endif
542                                                   558 
543         GetPhiUAtX(tmpxx, phi, u) ;            << 559         GetPhiUAtX(tmpxx, phi, u) ; // the new point xx is accepted and phi/u replaced
544           // the new point xx is accepted and  << 
545                                                   560       
546 #ifdef G4TWISTDEBUG                               561 #ifdef G4TWISTDEBUG
547         G4cout << "approximated phi = " << phi    562         G4cout << "approximated phi = " << phi << ", u = " << u << G4endl ; 
548 #endif                                            563 #endif
549                                                   564       
550         if ( deltaX <= factor*ctol ) { IsConve    565         if ( deltaX <= factor*ctol ) { IsConverged = true ; break ; }
551                                                   566       
552       }  // end iterative loop (i)                567       }  // end iterative loop (i)
                                                   >> 568     
553                                                   569 
554     if ( std::fabs(tmpdist)<ctol ) tmpdist = 0 << 570     // new code  21.09.05 O.Link
                                                   >> 571     if ( std::fabs(tmpdist)<ctol ) tmpdist = 0 ; 
555                                                   572 
556 #ifdef G4TWISTDEBUG                               573 #ifdef G4TWISTDEBUG
557       G4cout << "refined solution "  << phi <<    574       G4cout << "refined solution "  << phi << " , " << u  <<  G4endl ;
558       G4cout << "distance = " << tmpdist << G4    575       G4cout << "distance = " << tmpdist << G4endl ;
559       G4cout << "local X = " << tmpxx << G4end    576       G4cout << "local X = " << tmpxx << G4endl ;
560 #endif                                            577 #endif
561                                                   578 
562       tmpisvalid = false ;  // init               579       tmpisvalid = false ;  // init 
563                                                   580 
564       if ( IsConverged )                       << 581       if ( IsConverged ) {
565       {                                        << 582 
566         if (validate == kValidateWithTol)      << 583         if (validate == kValidateWithTol) {
567         {                                      << 
568           tmpareacode = GetAreaCode(tmpxx);       584           tmpareacode = GetAreaCode(tmpxx);
569           if (!IsOutside(tmpareacode))         << 585           if (!IsOutside(tmpareacode)) {
570           {                                    << 
571             if (tmpdist >= 0) tmpisvalid = tru    586             if (tmpdist >= 0) tmpisvalid = true;
572           }                                       587           }
573         }                                      << 588         } else if (validate == kValidateWithoutTol) {
574         else if (validate == kValidateWithoutT << 
575         {                                      << 
576           tmpareacode = GetAreaCode(tmpxx, fal    589           tmpareacode = GetAreaCode(tmpxx, false);
577           if (IsInside(tmpareacode))           << 590           if (IsInside(tmpareacode)) {
578           {                                    << 
579             if (tmpdist >= 0) tmpisvalid = tru    591             if (tmpdist >= 0) tmpisvalid = true;
580           }                                       592           }
581         }                                      << 593         } else { // kDontValidate
582         else   // kDontValidate                << 
583         {                                      << 
584           G4Exception("G4TwistedBoxSide::Dista    594           G4Exception("G4TwistedBoxSide::DistanceToSurface()",
585                       "GeomSolids0001", FatalE    595                       "GeomSolids0001", FatalException,
586                       "Feature NOT implemented    596                       "Feature NOT implemented !");
587         }                                         597         }
588       }                                        << 598         
589       else                                     << 599       } 
590       {                                        << 600       else {
591         tmpdist = kInfinity;     // no converg    601         tmpdist = kInfinity;     // no convergence after 10 steps 
592         tmpisvalid = false ;     // solution i    602         tmpisvalid = false ;     // solution is not vaild
593       }                                           603       }  
594                                                << 604         
                                                   >> 605         
595       // store the found values                   606       // store the found values 
596       xbuf[k].xx = tmpxx ;                        607       xbuf[k].xx = tmpxx ;
597       xbuf[k].distance = tmpdist ;                608       xbuf[k].distance = tmpdist ;
598       xbuf[k].areacode = tmpareacode ;            609       xbuf[k].areacode = tmpareacode ;
599       xbuf[k].isvalid = tmpisvalid ;              610       xbuf[k].isvalid = tmpisvalid ;
                                                   >> 611 
                                                   >> 612 
600     }  // end loop over physical solutions        613     }  // end loop over physical solutions 
                                                   >> 614 
                                                   >> 615 
601   }  // end less than 2 solutions                 616   }  // end less than 2 solutions
602                                                   617 
                                                   >> 618 
603   // sort again                                   619   // sort again
604   std::sort(xbuf.begin() , xbuf.end(), Distanc    620   std::sort(xbuf.begin() , xbuf.end(), DistanceSort ) ;  // sorting
605                                                   621 
606   // erase identical intersection (within kCar    622   // erase identical intersection (within kCarTolerance) 
607   xbuf.erase(std::unique(xbuf.begin(),xbuf.end << 623   xbuf.erase( std::unique(xbuf.begin(), xbuf.end() , EqualIntersection ) , xbuf.end() ) ;
608                                                   624 
609 #ifdef G4TWISTDEBUG                               625 #ifdef G4TWISTDEBUG
610   G4cout << G4endl << "list xbuf after sorting    626   G4cout << G4endl << "list xbuf after sorting : " << G4endl ;
611   G4cout << G4endl << G4endl ;                    627   G4cout << G4endl << G4endl ;
612 #endif                                            628 #endif
613                                                   629 
614   nxx = (G4int)xbuf.size() ;   // determine nu << 630   nxx = xbuf.size() ;   // determine number of solutions again.
615                                                   631 
616   for ( G4int i = 0 ; i<(G4int)xbuf.size() ; + << 632   for ( size_t i = 0 ; i<xbuf.size() ; i++ ) {
617   {                                            << 633     
618     distance[i] = xbuf[i].distance;               634     distance[i] = xbuf[i].distance;
619     gxx[i]      = ComputeGlobalPoint(xbuf[i].x    635     gxx[i]      = ComputeGlobalPoint(xbuf[i].xx);
620     areacode[i] = xbuf[i].areacode ;              636     areacode[i] = xbuf[i].areacode ;
621     isvalid[i]  = xbuf[i].isvalid ;               637     isvalid[i]  = xbuf[i].isvalid ;
622                                                   638     
623     fCurStatWithV.SetCurrentStatus(i, gxx[i],     639     fCurStatWithV.SetCurrentStatus(i, gxx[i], distance[i], areacode[i],
624                                      isvalid[i    640                                      isvalid[i], nxx, validate, &gp, &gv);
625                                                   641 
626 #ifdef G4TWISTDEBUG                               642 #ifdef G4TWISTDEBUG
627     G4cout << "element Nr. " << i                 643     G4cout << "element Nr. " << i 
628            << ", local Intersection = " << xbu    644            << ", local Intersection = " << xbuf[i].xx 
629            << ", distance = " << xbuf[i].dista    645            << ", distance = " << xbuf[i].distance 
630            << ", u = " << xbuf[i].u               646            << ", u = " << xbuf[i].u 
631            << ", phi = " << xbuf[i].phi           647            << ", phi = " << xbuf[i].phi 
632            << ", isvalid = " << xbuf[i].isvali    648            << ", isvalid = " << xbuf[i].isvalid 
633            << G4endl ;                            649            << G4endl ;
634 #endif                                            650 #endif
635                                                   651 
636   }  // end for( i ) loop                         652   }  // end for( i ) loop
637                                                   653 
                                                   >> 654     
638 #ifdef G4TWISTDEBUG                               655 #ifdef G4TWISTDEBUG
639   G4cout << "G4TwistBoxSide finished " << G4en    656   G4cout << "G4TwistBoxSide finished " << G4endl ;
640   G4cout << nxx << " possible physical solutio    657   G4cout << nxx << " possible physical solutions found" << G4endl ;
641   for ( G4int k= 0 ; k< nxx ; ++k )            << 658   for ( G4int k= 0 ; k< nxx ; k++ ) {
642   {                                            << 
643     G4cout << "global intersection Point found    659     G4cout << "global intersection Point found: " << gxx[k] << G4endl ;
644     G4cout << "distance = " << distance[k] <<     660     G4cout << "distance = " << distance[k] << G4endl ;
645     G4cout << "isvalid = " << isvalid[k] << G4    661     G4cout << "isvalid = " << isvalid[k] << G4endl ;
646   }                                               662   }
647 #endif                                            663 #endif
648                                                   664 
649   return nxx ;                                    665   return nxx ;
                                                   >> 666     
650 }                                                 667 }
651                                                   668 
                                                   >> 669 
652 //============================================    670 //=====================================================================
653 //* DistanceToSurface ------------------------    671 //* DistanceToSurface -------------------------------------------------
654                                                   672 
655 G4int G4TwistBoxSide::DistanceToSurface(const  << 673 G4int G4TwistBoxSide::DistanceToSurface(const G4ThreeVector &gp,
656                                                << 674                                                 G4ThreeVector  gxx[],
657                                                << 675                                                 G4double       distance[],
658                                                << 676                                                 G4int          areacode[])
659 {                                                 677 {  
                                                   >> 678   // to do
                                                   >> 679 
660   const G4double ctol = 0.5 * kCarTolerance;      680   const G4double ctol = 0.5 * kCarTolerance;
661                                                   681 
662   fCurStat.ResetfDone(kDontValidate, &gp);        682   fCurStat.ResetfDone(kDontValidate, &gp);
663                                                   683 
664    if (fCurStat.IsDone())                      << 684    if (fCurStat.IsDone()) {
665    {                                           << 685       G4int i;
666       for (G4int i=0; i<fCurStat.GetNXX(); ++i << 686       for (i=0; i<fCurStat.GetNXX(); i++) {
667       {                                        << 
668          gxx[i] = fCurStat.GetXX(i);              687          gxx[i] = fCurStat.GetXX(i);
669          distance[i] = fCurStat.GetDistance(i)    688          distance[i] = fCurStat.GetDistance(i);
670          areacode[i] = fCurStat.GetAreacode(i)    689          areacode[i] = fCurStat.GetAreacode(i);
671       }                                           690       }
672       return fCurStat.GetNXX();                   691       return fCurStat.GetNXX();
673    }                                           << 692    } else {
674    else  // initialize                         << 693       // initialize
675    {                                           << 694       G4int i;
676       for (G4int i=0; i<G4VSURFACENXX; ++i)    << 695       for (i=0; i<G4VSURFACENXX; i++) {
677       {                                        << 
678          distance[i] = kInfinity;                 696          distance[i] = kInfinity;
679          areacode[i] = sOutside;                  697          areacode[i] = sOutside;
680          gxx[i].set(kInfinity, kInfinity, kInf    698          gxx[i].set(kInfinity, kInfinity, kInfinity);
681       }                                           699       }
682    }                                              700    }
683                                                   701    
684    G4ThreeVector p = ComputeLocalPoint(gp);       702    G4ThreeVector p = ComputeLocalPoint(gp);
685    G4ThreeVector xx;  // intersection point       703    G4ThreeVector xx;  // intersection point
686    G4ThreeVector xxonsurface ; // interpolated    704    G4ThreeVector xxonsurface ; // interpolated intersection point 
687                                                   705 
688    // the surfacenormal at that surface point     706    // the surfacenormal at that surface point
689    G4double phiR = 0. ;                        << 707    G4double phiR = 0  ; // 
690    G4double uR = 0. ;                          << 708    G4double uR = 0 ;
691                                                   709 
692    G4ThreeVector surfacenormal ;                  710    G4ThreeVector surfacenormal ; 
693    G4double deltaX ;                              711    G4double deltaX ;
694                                                   712    
695    G4int maxint = 20 ;                            713    G4int maxint = 20 ;
696                                                   714 
697    for ( G4int i = 1 ; i<maxint ; ++i )        << 715    for ( G4int i = 1 ; i<maxint ; i++ ) {
698    {                                           << 716 
699      xxonsurface = SurfacePoint(phiR,uR) ;        717      xxonsurface = SurfacePoint(phiR,uR) ;
700      surfacenormal = NormAng(phiR,uR) ;           718      surfacenormal = NormAng(phiR,uR) ;
701      distance[0] = DistanceToPlane(p, xxonsurf    719      distance[0] = DistanceToPlane(p, xxonsurface, surfacenormal, xx); // new XX
702      deltaX = ( xx - xxonsurface ).mag() ;        720      deltaX = ( xx - xxonsurface ).mag() ; 
703                                                   721 
704 #ifdef G4TWISTDEBUG                               722 #ifdef G4TWISTDEBUG
705      G4cout << "i = " << i << ", distance = "  << 723      G4cout << "i = " << i << ", distance = " << distance[0] << ", " << deltaX << G4endl ;
706             << ", " << deltaX << G4endl ;      << 
707      G4cout << "X = " << xx << G4endl ;           724      G4cout << "X = " << xx << G4endl ;
708 #endif                                            725 #endif
709                                                   726 
710      // the new point xx is accepted and phi/p    727      // the new point xx is accepted and phi/psi replaced
711      GetPhiUAtX(xx, phiR, uR) ;                   728      GetPhiUAtX(xx, phiR, uR) ;
712                                                   729      
713      if ( deltaX <= ctol ) { break ; }            730      if ( deltaX <= ctol ) { break ; }
                                                   >> 731 
714    }                                              732    }
715                                                   733 
716    // check validity of solution ( valid phi,p    734    // check validity of solution ( valid phi,psi ) 
717                                                   735 
718    G4double halfphi = 0.5*fPhiTwist ;             736    G4double halfphi = 0.5*fPhiTwist ;
719    G4double uMax = GetBoundaryMax(phiR) ;         737    G4double uMax = GetBoundaryMax(phiR) ;
720                                                   738 
721    if (  phiR > halfphi ) phiR =  halfphi ;       739    if (  phiR > halfphi ) phiR =  halfphi ;
722    if ( phiR < -halfphi ) phiR = -halfphi ;       740    if ( phiR < -halfphi ) phiR = -halfphi ;
723    if ( uR > uMax ) uR = uMax ;                   741    if ( uR > uMax ) uR = uMax ;
724    if ( uR < -uMax ) uR = -uMax ;                 742    if ( uR < -uMax ) uR = -uMax ;
725                                                   743 
726    xxonsurface = SurfacePoint(phiR,uR) ;          744    xxonsurface = SurfacePoint(phiR,uR) ;
727    distance[0] = (  p - xx ).mag() ;              745    distance[0] = (  p - xx ).mag() ;
728    if ( distance[0] <= ctol ) { distance[0] =     746    if ( distance[0] <= ctol ) { distance[0] = 0 ; } 
729                                                   747 
730    // end of validity                             748    // end of validity 
731                                                   749 
732 #ifdef G4TWISTDEBUG                               750 #ifdef G4TWISTDEBUG
733    G4cout << "refined solution "  << phiR << "    751    G4cout << "refined solution "  << phiR << " , " << uR << " , " <<  G4endl ;
734    G4cout << "distance = " << distance[0] << G    752    G4cout << "distance = " << distance[0] << G4endl ;
735    G4cout << "X = " << xx << G4endl ;             753    G4cout << "X = " << xx << G4endl ;
736 #endif                                            754 #endif
737                                                   755 
738    G4bool isvalid = true;                         756    G4bool isvalid = true;
739    gxx[0] = ComputeGlobalPoint(xx);            << 757    gxx[0]      = ComputeGlobalPoint(xx);
740                                                   758    
741 #ifdef G4TWISTDEBUG                               759 #ifdef G4TWISTDEBUG
742    G4cout << "intersection Point found: " << g    760    G4cout << "intersection Point found: " << gxx[0] << G4endl ;
743    G4cout << "distance = " << distance[0] << G    761    G4cout << "distance = " << distance[0] << G4endl ;
744 #endif                                            762 #endif
745                                                   763 
746    fCurStat.SetCurrentStatus(0, gxx[0], distan    764    fCurStat.SetCurrentStatus(0, gxx[0], distance[0], areacode[0],
747                             isvalid, 1, kDontV    765                             isvalid, 1, kDontValidate, &gp);
748    return 1;                                      766    return 1;
                                                   >> 767    
                                                   >> 768 
749 }                                                 769 }
750                                                   770 
                                                   >> 771 
751 //============================================    772 //=====================================================================
752 //* GetAreaCode ------------------------------    773 //* GetAreaCode -------------------------------------------------------
753                                                   774 
754 G4int G4TwistBoxSide::GetAreaCode(const G4Thre << 775 G4int G4TwistBoxSide::GetAreaCode(const G4ThreeVector &xx, 
755                                         G4bool << 776                                           G4bool withTol)
756 {                                                 777 {
757    // We must use the function in local coordi    778    // We must use the function in local coordinate system.
758    // See the description of DistanceToSurface    779    // See the description of DistanceToSurface(p,v).
759                                                   780    
760    const G4double ctol = 0.5 * kCarTolerance;     781    const G4double ctol = 0.5 * kCarTolerance;
761                                                   782 
762    G4double phi ;                                 783    G4double phi ;
763    G4double yprime ;                              784    G4double yprime ;
764    GetPhiUAtX(xx, phi,yprime ) ;                  785    GetPhiUAtX(xx, phi,yprime ) ;
765                                                   786 
766    G4double fYAxisMax =  GetBoundaryMax(phi) ;    787    G4double fYAxisMax =  GetBoundaryMax(phi) ;   // Boundaries are symmetric
767    G4double fYAxisMin =  - fYAxisMax ;            788    G4double fYAxisMin =  - fYAxisMax ;
768                                                   789 
769 #ifdef G4TWISTDEBUG                               790 #ifdef G4TWISTDEBUG
770    G4cout << "GetAreaCode: phi = " << phi << G    791    G4cout << "GetAreaCode: phi = " << phi << G4endl ;
771    G4cout << "GetAreaCode: yprime = " << yprim    792    G4cout << "GetAreaCode: yprime = " << yprime << G4endl ;
772    G4cout << "Intervall is " << fYAxisMin << "    793    G4cout << "Intervall is " << fYAxisMin << " to " << fYAxisMax << G4endl ;
773 #endif                                            794 #endif
774                                                   795 
775    G4int areacode = sInside;                      796    G4int areacode = sInside;
776                                                   797    
777    if (fAxis[0] == kYAxis && fAxis[1] == kZAxi << 798    if (fAxis[0] == kYAxis && fAxis[1] == kZAxis) {
778    {                                           << 799 
779       G4int zaxis = 1;                            800       G4int zaxis = 1;
780                                                   801       
781       if (withTol)                             << 802       if (withTol) {
782       {                                        << 803 
783         G4bool isoutside = false;              << 804         G4bool isoutside   = false;
784                                                   805         
785         // test boundary of yaxis                 806         // test boundary of yaxis
786                                                   807 
787          if (yprime < fYAxisMin + ctol)        << 808          if (yprime < fYAxisMin + ctol) {
788          {                                     << 
789             areacode |= (sAxis0 & (sAxisY | sA    809             areacode |= (sAxis0 & (sAxisY | sAxisMin)) | sBoundary; 
790             if (yprime <= fYAxisMin - ctol) is    810             if (yprime <= fYAxisMin - ctol) isoutside = true;
791                                                   811 
792          }                                     << 812          } else if (yprime > fYAxisMax - ctol) {
793          else if (yprime > fYAxisMax - ctol)   << 
794          {                                     << 
795             areacode |= (sAxis0 & (sAxisY | sA    813             areacode |= (sAxis0 & (sAxisY | sAxisMax)) | sBoundary;
796             if (yprime >= fYAxisMax + ctol)  i    814             if (yprime >= fYAxisMax + ctol)  isoutside = true;
797          }                                        815          }
798                                                   816 
799          // test boundary of z-axis               817          // test boundary of z-axis
800                                                   818 
801          if (xx.z() < fAxisMin[zaxis] + ctol)  << 819          if (xx.z() < fAxisMin[zaxis] + ctol) {
802          {                                     << 
803             areacode |= (sAxis1 & (sAxisZ | sA    820             areacode |= (sAxis1 & (sAxisZ | sAxisMin)); 
804                                                   821 
805             if   ((areacode & sBoundary) != 0) << 822             if   (areacode & sBoundary) areacode |= sCorner;  // xx is on the corner.
806             else                        areaco    823             else                        areacode |= sBoundary;
807             if (xx.z() <= fAxisMin[zaxis] - ct    824             if (xx.z() <= fAxisMin[zaxis] - ctol) isoutside = true;
808                                                   825 
809          }                                     << 826          } else if (xx.z() > fAxisMax[zaxis] - ctol) {
810          else if (xx.z() > fAxisMax[zaxis] - c << 
811          {                                     << 
812             areacode |= (sAxis1 & (sAxisZ | sA    827             areacode |= (sAxis1 & (sAxisZ | sAxisMax));
813                                                   828 
814             if   ((areacode & sBoundary) != 0) << 829             if   (areacode & sBoundary) areacode |= sCorner;  // xx is on the corner.
815             else                        areaco    830             else                        areacode |= sBoundary; 
816             if (xx.z() >= fAxisMax[zaxis] + ct    831             if (xx.z() >= fAxisMax[zaxis] + ctol) isoutside = true;
817          }                                        832          }
818                                                   833 
819          // if isoutside = true, clear inside     834          // if isoutside = true, clear inside bit.             
820          // if not on boundary, add axis infor    835          // if not on boundary, add axis information.             
821                                                   836          
822          if (isoutside)                        << 837          if (isoutside) {
823          {                                     << 
824             G4int tmpareacode = areacode & (~s    838             G4int tmpareacode = areacode & (~sInside);
825             areacode = tmpareacode;               839             areacode = tmpareacode;
826          }                                     << 840          } else if ((areacode & sBoundary) != sBoundary) {
827          else if ((areacode & sBoundary) != sB << 
828          {                                     << 
829             areacode |= (sAxis0 & sAxisY) | (s    841             areacode |= (sAxis0 & sAxisY) | (sAxis1 & sAxisZ);
830          }                                        842          }           
831                                                   843          
832       }                                        << 844       } else {
833       else                                     << 845 
834       {                                        << 
835          // boundary of y-axis                    846          // boundary of y-axis
836                                                   847 
837          if (yprime < fYAxisMin )              << 848          if (yprime < fYAxisMin ) {
838          {                                     << 
839             areacode |= (sAxis0 & (sAxisY | sA    849             areacode |= (sAxis0 & (sAxisY | sAxisMin)) | sBoundary;
840          }                                     << 850          } else if (yprime > fYAxisMax) {
841          else if (yprime > fYAxisMax)          << 
842          {                                     << 
843             areacode |= (sAxis0 & (sAxisY | sA    851             areacode |= (sAxis0 & (sAxisY | sAxisMax)) | sBoundary;
844          }                                        852          }
845                                                   853          
846          // boundary of z-axis                    854          // boundary of z-axis
847                                                   855 
848          if (xx.z() < fAxisMin[zaxis])         << 856          if (xx.z() < fAxisMin[zaxis]) {
849          {                                     << 
850             areacode |= (sAxis1 & (sAxisZ | sA    857             areacode |= (sAxis1 & (sAxisZ | sAxisMin));
851             if   ((areacode & sBoundary) != 0) << 858             if   (areacode & sBoundary) areacode |= sCorner;  // xx is on the corner.
852             else                        areaco    859             else                        areacode |= sBoundary; 
853                                                   860            
854          }                                     << 861          } else if (xx.z() > fAxisMax[zaxis]) {
855          else if (xx.z() > fAxisMax[zaxis])    << 
856          {                                     << 
857             areacode |= (sAxis1 & (sAxisZ | sA    862             areacode |= (sAxis1 & (sAxisZ | sAxisMax)) ;
858             if   ((areacode & sBoundary) != 0) << 863             if   (areacode & sBoundary) areacode |= sCorner;  // xx is on the corner.
859             else                        areaco    864             else                        areacode |= sBoundary; 
860          }                                        865          }
861                                                   866 
862          if ((areacode & sBoundary) != sBounda << 867          if ((areacode & sBoundary) != sBoundary) {
863          {                                     << 
864             areacode |= (sAxis0 & sAxisY) | (s    868             areacode |= (sAxis0 & sAxisY) | (sAxis1 & sAxisZ);
865          }                                        869          }           
866       }                                           870       }
867       return areacode;                            871       return areacode;
868    }                                           << 872    } else {
869    else                                        << 
870    {                                           << 
871       G4Exception("G4TwistBoxSide::GetAreaCode    873       G4Exception("G4TwistBoxSide::GetAreaCode()",
872                   "GeomSolids0001", FatalExcep    874                   "GeomSolids0001", FatalException,
873                   "Feature NOT implemented !")    875                   "Feature NOT implemented !");
874    }                                              876    }
875    return areacode;                               877    return areacode;
876 }                                                 878 }
877                                                   879 
878 //============================================    880 //=====================================================================
879 //* SetCorners() -----------------------------    881 //* SetCorners() ------------------------------------------------------
880                                                   882 
881 void G4TwistBoxSide::SetCorners()                 883 void G4TwistBoxSide::SetCorners()
882 {                                                 884 {
883                                                   885 
884   // Set Corner points in local coodinate.        886   // Set Corner points in local coodinate.   
885                                                   887 
886   if (fAxis[0] == kYAxis && fAxis[1] == kZAxis << 888   if (fAxis[0] == kYAxis && fAxis[1] == kZAxis) {
887   {                                            << 889     
888     G4double x, y, z;                             890     G4double x, y, z;
889                                                   891 
890     // corner of Axis0min and Axis1min            892     // corner of Axis0min and Axis1min
891                                                   893 
892     x = -fdeltaX/2. + (fDx2 - fDy1*fTAlph)*std    894     x = -fdeltaX/2. + (fDx2 - fDy1*fTAlph)*std::cos(fPhiTwist/2.) - fDy1*std::sin(fPhiTwist/2.) ;
893     y = -fdeltaY/2. - fDy1*std::cos(fPhiTwist/    895     y = -fdeltaY/2. - fDy1*std::cos(fPhiTwist/2.) + (-fDx2 + fDy1*fTAlph)*std::sin(fPhiTwist/2.) ;
894     z = -fDz ;                                    896     z = -fDz ;
895                                                   897 
896     SetCorner(sC0Min1Min, x, y, z);               898     SetCorner(sC0Min1Min, x, y, z);
897                                                   899 
898     // corner of Axis0max and Axis1min            900     // corner of Axis0max and Axis1min
899                                                   901 
900     x = -fdeltaX/2. + (fDx2 + fDy1*fTAlph)*std    902     x = -fdeltaX/2. + (fDx2 + fDy1*fTAlph)*std::cos(fPhiTwist/2.) + fDy1*std::sin(fPhiTwist/2.) ;
901     y = -fdeltaY/2. + fDy1*std::cos(fPhiTwist/    903     y = -fdeltaY/2. + fDy1*std::cos(fPhiTwist/2.) - (fDx2 + fDy1*fTAlph)*std::sin(fPhiTwist/2.) ;
902     z = -fDz ;                                    904     z = -fDz ;
903                                                   905 
904     SetCorner(sC0Max1Min, x, y, z);               906     SetCorner(sC0Max1Min, x, y, z);
905                                                   907       
906     // corner of Axis0max and Axis1max            908     // corner of Axis0max and Axis1max
907                                                   909 
908     x = fdeltaX/2. + (fDx4 + fDy2*fTAlph)*std:    910     x = fdeltaX/2. + (fDx4 + fDy2*fTAlph)*std::cos(fPhiTwist/2.) - fDy2*std::sin(fPhiTwist/2.) ;
909     y = fdeltaY/2. + fDy2*std::cos(fPhiTwist/2    911     y = fdeltaY/2. + fDy2*std::cos(fPhiTwist/2.) + (fDx4 + fDy2*fTAlph)*std::sin(fPhiTwist/2.) ;
910     z = fDz ;                                     912     z = fDz ;
911                                                   913 
912     SetCorner(sC0Max1Max, x, y, z);               914     SetCorner(sC0Max1Max, x, y, z);
913                                                   915       
914     // corner of Axis0min and Axis1max            916     // corner of Axis0min and Axis1max
915                                                   917 
916     x = fdeltaX/2. + (fDx4 - fDy2*fTAlph)*std:    918     x = fdeltaX/2. + (fDx4 - fDy2*fTAlph)*std::cos(fPhiTwist/2.) + fDy2*std::sin(fPhiTwist/2.) ;
917     y = fdeltaY/2. - fDy2*std::cos(fPhiTwist/2    919     y = fdeltaY/2. - fDy2*std::cos(fPhiTwist/2.) + (fDx4 - fDy2*fTAlph)*std::sin(fPhiTwist/2.) ;
918     z = fDz ;                                     920     z = fDz ;
919                                                   921 
920     SetCorner(sC0Min1Max, x, y, z);               922     SetCorner(sC0Min1Max, x, y, z);
921                                                   923 
922   }                                            << 924   } else {
923   else                                         << 925 
924   {                                            << 
925     G4Exception("G4TwistBoxSide::SetCorners()"    926     G4Exception("G4TwistBoxSide::SetCorners()",
926                 "GeomSolids0001", FatalExcepti    927                 "GeomSolids0001", FatalException,
927                 "Method NOT implemented !");      928                 "Method NOT implemented !");
928   }                                               929   }
929 }                                                 930 }
930                                                   931 
931 //============================================    932 //=====================================================================
932 //* SetBoundaries() --------------------------    933 //* SetBoundaries() ---------------------------------------------------
933                                                   934 
934 void G4TwistBoxSide::SetBoundaries()              935 void G4TwistBoxSide::SetBoundaries()
935 {                                                 936 {
936    // Set direction-unit vector of boundary-li << 937    // Set direction-unit vector of boundary-lines in local coodinate. 
                                                   >> 938    //   
937                                                   939 
938   G4ThreeVector direction;                        940   G4ThreeVector direction;
939                                                   941    
940   if (fAxis[0] == kYAxis && fAxis[1] == kZAxis << 942   if (fAxis[0] == kYAxis && fAxis[1] == kZAxis) {
941   {                                            << 943       
942     // sAxis0 & sAxisMin                          944     // sAxis0 & sAxisMin
943     direction = GetCorner(sC0Min1Max) - GetCor    945     direction = GetCorner(sC0Min1Max) - GetCorner(sC0Min1Min);
944     direction = direction.unit();                 946     direction = direction.unit();
945     SetBoundary(sAxis0 & (sAxisY | sAxisMin),     947     SetBoundary(sAxis0 & (sAxisY | sAxisMin), direction, 
946                 GetCorner(sC0Min1Min), sAxisZ)    948                 GetCorner(sC0Min1Min), sAxisZ) ;
947                                                   949       
948       // sAxis0 & sAxisMax                        950       // sAxis0 & sAxisMax
949     direction = GetCorner(sC0Max1Max) - GetCor    951     direction = GetCorner(sC0Max1Max) - GetCorner(sC0Max1Min);
950     direction = direction.unit();                 952     direction = direction.unit();
951     SetBoundary(sAxis0 & (sAxisY | sAxisMax),     953     SetBoundary(sAxis0 & (sAxisY | sAxisMax), direction, 
952                 GetCorner(sC0Max1Min), sAxisZ)    954                 GetCorner(sC0Max1Min), sAxisZ);
953                                                   955     
954     // sAxis1 & sAxisMin                          956     // sAxis1 & sAxisMin
955     direction = GetCorner(sC0Max1Min) - GetCor    957     direction = GetCorner(sC0Max1Min) - GetCorner(sC0Min1Min);
956     direction = direction.unit();                 958     direction = direction.unit();
957     SetBoundary(sAxis1 & (sAxisZ | sAxisMin),     959     SetBoundary(sAxis1 & (sAxisZ | sAxisMin), direction, 
958                 GetCorner(sC0Min1Min), sAxisY)    960                 GetCorner(sC0Min1Min), sAxisY);
959                                                   961     
960     // sAxis1 & sAxisMax                          962     // sAxis1 & sAxisMax
961     direction = GetCorner(sC0Max1Max) - GetCor    963     direction = GetCorner(sC0Max1Max) - GetCorner(sC0Min1Max);
962     direction = direction.unit();                 964     direction = direction.unit();
963     SetBoundary(sAxis1 & (sAxisZ | sAxisMax),     965     SetBoundary(sAxis1 & (sAxisZ | sAxisMax), direction, 
964                 GetCorner(sC0Min1Max), sAxisY)    966                 GetCorner(sC0Min1Max), sAxisY);
965                                                   967     
966   }                                            << 968   } else {
967   else                                         << 969     
968   {                                            << 970   G4Exception("G4TwistBoxSide::SetCorners()",
969     G4Exception("G4TwistBoxSide::SetCorners()" << 971               "GeomSolids0001", FatalException,
970                 "GeomSolids0001", FatalExcepti << 972               "Feature NOT implemented !");
971                 "Feature NOT implemented !");  << 
972   }                                               973   }
973 }                                                 974 }
974                                                   975 
975                                                   976 
976 void G4TwistBoxSide::GetPhiUAtX( const G4Three << 977 void G4TwistBoxSide::GetPhiUAtX( G4ThreeVector p, G4double &phi, G4double &u) 
977 {                                                 978 {
978   // find closest point XX on surface for a gi    979   // find closest point XX on surface for a given point p
979   // X0 is a point on the surface,  d is the d << 980   // X0 is a point on the surface,  d is the direction ( both for a fixed z = pz)
980   // ( both for a fixed z = pz)                << 
981                                                   981   
982   // phi is given by the z coordinate of p        982   // phi is given by the z coordinate of p
983                                                   983 
984   phi = p.z()/(2*fDz)*fPhiTwist ;                 984   phi = p.z()/(2*fDz)*fPhiTwist ;
985                                                   985 
986   u =  -(fTAlph*(fDx4plus2*fPhiTwist + 2*fDx4m << 986   u =  -(fTAlph*(fDx4plus2*fPhiTwist + 2*fDx4minus2*phi) + 2*(fdeltaY*phi + fdeltaX*fTAlph*phi - fPhiTwist*(fTAlph*p.x() + p.y()))* std::cos(phi) + 2*(-(fdeltaX*phi) + fdeltaY*fTAlph*phi + fPhiTwist*(p.x() - fTAlph*p.y()))*std::sin(phi))/(2.*(fPhiTwist + fPhiTwist*fTAlph*fTAlph)) ;
987          + 2*(fdeltaY*phi + fdeltaX*fTAlph*phi << 987 
988          - fPhiTwist*(fTAlph*p.x() + p.y()))*  << 988 
989          + 2*(-(fdeltaX*phi) + fdeltaY*fTAlph* << 
990          - fTAlph*p.y()))*std::sin(phi))/(2.*( << 
991          + fPhiTwist*fTAlph*fTAlph)) ;         << 
992 }                                                 989 }
993                                                   990 
994                                                   991 
995 G4ThreeVector G4TwistBoxSide::ProjectPoint(con << 992 G4ThreeVector G4TwistBoxSide::ProjectPoint(const G4ThreeVector &p, 
996                                                << 993                                                     G4bool isglobal) 
997 {                                                 994 {
998   // Get Rho at p.z() on Hyperbolic Surface.      995   // Get Rho at p.z() on Hyperbolic Surface.
999   G4ThreeVector tmpp;                             996   G4ThreeVector tmpp;
1000   if (isglobal)                               << 997   if (isglobal) {
1001   {                                           << 
1002      tmpp = fRot.inverse()*p - fTrans;           998      tmpp = fRot.inverse()*p - fTrans;
1003   }                                           << 999   } else {
1004   else                                        << 
1005   {                                           << 
1006      tmpp = p;                                   1000      tmpp = p;
1007   }                                              1001   }
1008                                                  1002 
1009   G4double phi ;                                 1003   G4double phi ;
1010   G4double u ;                                   1004   G4double u ;
1011                                                  1005 
1012   GetPhiUAtX( tmpp, phi, u ) ;                << 1006   GetPhiUAtX( tmpp, phi, u ) ;  // calculate (phi, u) for a point p close the surface
1013     // calculate (phi, u) for a point p close << 
1014                                                  1007   
1015   G4ThreeVector xx = SurfacePoint(phi,u) ;    << 1008   G4ThreeVector xx = SurfacePoint(phi,u) ;  // transform back to cartesian coordinates
1016     // transform back to cartesian coordinate << 
1017                                                  1009 
1018   if (isglobal)                               << 1010   if (isglobal) {
1019   {                                           << 
1020      return (fRot * xx + fTrans);                1011      return (fRot * xx + fTrans);
1021   }                                           << 1012   } else {
1022   else                                        << 
1023   {                                           << 
1024      return xx;                                  1013      return xx;
1025   }                                              1014   }
1026 }                                                1015 }
1027                                                  1016 
1028 void G4TwistBoxSide::GetFacets( G4int k, G4in << 1017 void G4TwistBoxSide::GetFacets( G4int k, G4int n,  G4double xyz[][3], G4int faces[][4], G4int iside ) 
1029                                 G4int faces[] << 
1030 {                                                1018 {
                                                   >> 1019 
1031   G4double phi ;                                 1020   G4double phi ;
1032   G4double b ;                                   1021   G4double b ;   
1033                                                  1022 
1034   G4double z, u ;     // the two parameters f    1023   G4double z, u ;     // the two parameters for the surface equation
1035   G4ThreeVector p ;  // a point on the surfac    1024   G4ThreeVector p ;  // a point on the surface, given by (z,u)
1036                                                  1025 
1037   G4int nnode ;                                  1026   G4int nnode ;
1038   G4int nface ;                                  1027   G4int nface ;
1039                                                  1028 
1040   // calculate the (n-1)*(k-1) vertices          1029   // calculate the (n-1)*(k-1) vertices
1041                                                  1030 
1042   G4int i,j ;                                    1031   G4int i,j ;
1043                                                  1032 
1044   for ( i = 0 ; i<n ; ++i )                   << 1033   for ( i = 0 ; i<n ; i++ ) {
1045   {                                           << 1034 
1046     z = -fDz+i*(2.*fDz)/(n-1) ;                  1035     z = -fDz+i*(2.*fDz)/(n-1) ;
1047     phi = z*fPhiTwist/(2*fDz) ;                  1036     phi = z*fPhiTwist/(2*fDz) ;
1048     b = GetValueB(phi) ;                         1037     b = GetValueB(phi) ;
1049                                                  1038 
1050     for ( j = 0 ; j<k ; ++j )                 << 1039     for ( j = 0 ; j<k ; j++ ) {
1051     {                                         << 1040 
1052       nnode = GetNode(i,j,k,n,iside) ;           1041       nnode = GetNode(i,j,k,n,iside) ;
1053       u = -b/2 +j*b/(k-1) ;                      1042       u = -b/2 +j*b/(k-1) ;
1054       p = SurfacePoint(phi,u,true) ;          << 1043       p = SurfacePoint(phi,u,true) ;  // surface point in global coordinate system
1055        // surface point in global coordinate  << 
1056                                                  1044 
1057       xyz[nnode][0] = p.x() ;                    1045       xyz[nnode][0] = p.x() ;
1058       xyz[nnode][1] = p.y() ;                    1046       xyz[nnode][1] = p.y() ;
1059       xyz[nnode][2] = p.z() ;                    1047       xyz[nnode][2] = p.z() ;
1060                                                  1048 
1061       if ( i<n-1 && j<k-1 )     // contercloc << 1049       if ( i<n-1 && j<k-1 ) {   // conterclock wise filling
1062       {                                       << 1050         
1063         nface = GetFace(i,j,k,n,iside) ;         1051         nface = GetFace(i,j,k,n,iside) ;
1064         faces[nface][0] = GetEdgeVisibility(i    1052         faces[nface][0] = GetEdgeVisibility(i,j,k,n,0,-1) * (GetNode(i  ,j  ,k,n,iside)+1) ;  // fortran numbering
1065         faces[nface][1] = GetEdgeVisibility(i    1053         faces[nface][1] = GetEdgeVisibility(i,j,k,n,1,-1) * (GetNode(i  ,j+1,k,n,iside)+1) ;
1066         faces[nface][2] = GetEdgeVisibility(i    1054         faces[nface][2] = GetEdgeVisibility(i,j,k,n,2,-1) * (GetNode(i+1,j+1,k,n,iside)+1) ;
1067         faces[nface][3] = GetEdgeVisibility(i    1055         faces[nface][3] = GetEdgeVisibility(i,j,k,n,3,-1) * (GetNode(i+1,j  ,k,n,iside)+1) ;
                                                   >> 1056 
1068       }                                          1057       }
1069     }                                            1058     }
1070   }                                              1059   }
1071 }                                                1060 }
1072                                                  1061