Geant4 Cross Reference

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Geant4/geometry/solids/specific/src/G4TwistBoxSide.cc

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Differences between /geometry/solids/specific/src/G4TwistBoxSide.cc (Version 11.3.0) and /geometry/solids/specific/src/G4TwistBoxSide.cc (Version 9.2)


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 25 //                                                 25 //
 26 // G4TwistBoxSide implementation               << 
 27 //                                                 26 //
 28 // Author: 18/03/2005 - O.Link (Oliver.Link@ce <<  27 // $Id: G4TwistBoxSide.cc,v 1.6 2007/05/23 09:31:02 gcosmo Exp $
                                                   >>  28 // GEANT4 tag $Name: geant4-09-02 $
                                                   >>  29 //
                                                   >>  30 // 
                                                   >>  31 // --------------------------------------------------------------------
                                                   >>  32 // GEANT 4 class source file
                                                   >>  33 //
                                                   >>  34 //
                                                   >>  35 // G4TwistBoxSide.cc
                                                   >>  36 //
                                                   >>  37 // Author:
                                                   >>  38 //
                                                   >>  39 //   18/03/2005 - O.Link (Oliver.Link@cern.ch)
                                                   >>  40 //
 29 // -------------------------------------------     41 // --------------------------------------------------------------------
 30                                                    42 
 31 #include <cmath>                                   43 #include <cmath>
 32                                                    44 
 33 #include "G4TwistBoxSide.hh"                       45 #include "G4TwistBoxSide.hh"
 34 #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   {                                            <<  83     G4cerr << "ERROR - G4TwistBoxSide::G4TwistBoxSide(): "
 73     std::ostringstream message;                <<  84            << GetName() << G4endl
 74     message << "TwistedTrapBoxSide is not used <<  85            << "        Not a box ! - " << G4endl ;
 75             << GetName() << G4endl             <<  86     G4Exception("G4TwistBoxSide::G4TwistBoxSide()", "InvalidSetup",
 76             << "        Not a box !";          <<  87                 FatalException, "TwistedTrapBoxSide is not used as a the side of a box.");
 77     G4Exception("G4TwistBoxSide::G4TwistBoxSid << 
 78                 FatalException, message);      << 
 79   }                                                88   }
 80                                                    89  
 81   fDy1   = pDy1 ;                                  90   fDy1   = pDy1 ;
 82   fDy2   = pDy2 ;                                  91   fDy2   = pDy2 ;
 83                                                    92 
 84   fDz   = pDz ;                                    93   fDz   = pDz ;
 85                                                    94 
 86   fAlph = pAlph  ;                                 95   fAlph = pAlph  ;
 87   fTAlph = std::tan(fAlph) ;                       96   fTAlph = std::tan(fAlph) ;
 88                                                    97 
 89   fTheta = pTheta ;                                98   fTheta = pTheta ;
 90   fPhi   = pPhi ;                                  99   fPhi   = pPhi ;
 91                                                   100 
 92   // precalculate frequently used parameters   << 101  // precalculate frequently used parameters
 93                                                << 
 94   fDx4plus2  = fDx4 + fDx2 ;                      102   fDx4plus2  = fDx4 + fDx2 ;
 95   fDx4minus2 = fDx4 - fDx2 ;                      103   fDx4minus2 = fDx4 - fDx2 ;
 96   fDx3plus1  = fDx3 + fDx1 ;                      104   fDx3plus1  = fDx3 + fDx1 ; 
 97   fDx3minus1 = fDx3 - fDx1 ;                      105   fDx3minus1 = fDx3 - fDx1 ;
 98   fDy2plus1  = fDy2 + fDy1 ;                      106   fDy2plus1  = fDy2 + fDy1 ;
 99   fDy2minus1 = fDy2 - fDy1 ;                      107   fDy2minus1 = fDy2 - fDy1 ;
100                                                   108 
101   fa1md1 = 2*fDx2 - 2*fDx1 ;                   << 109   fa1md1 = 2*fDx2 - 2*fDx1  ; 
102   fa2md2 = 2*fDx4 - 2*fDx3 ;                      110   fa2md2 = 2*fDx4 - 2*fDx3 ;
103                                                   111 
104                                                   112 
105   fPhiTwist = PhiTwist ;     // dphi              113   fPhiTwist = PhiTwist ;     // dphi
106   fAngleSide = AngleSide ;  // 0,90,180,270 de    114   fAngleSide = AngleSide ;  // 0,90,180,270 deg
107                                                   115 
108   fdeltaX = 2*fDz * std::tan(fTheta) * std::co << 116   fdeltaX = 2 * fDz * std::tan(fTheta) * std::cos(fPhi)  ;  // dx in surface equation
109   fdeltaY = 2*fDz * std::tan(fTheta) * std::si << 117   fdeltaY = 2 * fDz * std::tan(fTheta) * std::sin(fPhi)  ;  // dy in surface equation
110                                                   118   
111   fRot.rotateZ( AngleSide ) ;                     119   fRot.rotateZ( AngleSide ) ; 
112                                                   120   
113   fTrans.set(0, 0, 0);  // No Translation         121   fTrans.set(0, 0, 0);  // No Translation
114   fIsValidNorm = false;                           122   fIsValidNorm = false;
115                                                   123   
116   SetCorners();                                << 124   SetCorners() ;
117   SetBoundaries();                             << 125   SetBoundaries() ;
                                                   >> 126 
118 }                                                 127 }
119                                                   128 
120                                                   129 
121 //============================================    130 //=====================================================================
122 //* Fake default constructor -----------------    131 //* Fake default constructor ------------------------------------------
123                                                   132 
124 G4TwistBoxSide::G4TwistBoxSide( __void__& a )     133 G4TwistBoxSide::G4TwistBoxSide( __void__& a )
125   : G4VTwistSurface(a)                            134   : G4VTwistSurface(a)
126 {                                                 135 {
127 }                                                 136 }
128                                                   137 
129                                                   138 
130 //============================================    139 //=====================================================================
131 //* destructor -------------------------------    140 //* destructor --------------------------------------------------------
132                                                   141 
133 G4TwistBoxSide::~G4TwistBoxSide() = default;   << 142 G4TwistBoxSide::~G4TwistBoxSide()
                                                   >> 143 {
                                                   >> 144 }
134                                                   145 
135 //============================================    146 //=====================================================================
136 //* GetNormal --------------------------------    147 //* GetNormal ---------------------------------------------------------
137                                                   148 
138 G4ThreeVector G4TwistBoxSide::GetNormal(const  << 149 G4ThreeVector G4TwistBoxSide::GetNormal(const G4ThreeVector &tmpxx, 
139                                                << 150                                                 G4bool isGlobal) 
140 {                                                 151 {
141    // GetNormal returns a normal vector at a s    152    // GetNormal returns a normal vector at a surface (or very close
142    // to surface) point at tmpxx.                 153    // to surface) point at tmpxx.
143    // If isGlobal=true, it returns the normal     154    // If isGlobal=true, it returns the normal in global coordinate.
144    //                                             155    //
145                                                   156 
146    G4ThreeVector xx;                              157    G4ThreeVector xx;
147    if (isGlobal)                               << 158    if (isGlobal) {
148    {                                           << 
149       xx = ComputeLocalPoint(tmpxx);              159       xx = ComputeLocalPoint(tmpxx);
150       if ((xx - fCurrentNormal.p).mag() < 0.5  << 160       if ((xx - fCurrentNormal.p).mag() < 0.5 * kCarTolerance) {
151       {                                        << 
152          return ComputeGlobalDirection(fCurren    161          return ComputeGlobalDirection(fCurrentNormal.normal);
153       }                                           162       }
154    }                                           << 163    } else {
155    else                                        << 
156    {                                           << 
157       xx = tmpxx;                                 164       xx = tmpxx;
158       if (xx == fCurrentNormal.p)              << 165       if (xx == fCurrentNormal.p) {
159       {                                        << 
160          return fCurrentNormal.normal;            166          return fCurrentNormal.normal;
161       }                                           167       }
162    }                                              168    }
163                                                   169 
164    G4double phi ;                                 170    G4double phi ;
165    G4double u ;                                   171    G4double u ;
166                                                   172 
167    GetPhiUAtX(xx,phi,u) ;   // phi,u for point    173    GetPhiUAtX(xx,phi,u) ;   // phi,u for point xx close to surface 
168                                                   174 
169    G4ThreeVector normal = NormAng(phi,u) ;  // << 175    G4ThreeVector normal =  NormAng(phi,u) ;  // the normal vector at phi,u
170                                                   176 
171 #ifdef G4TWISTDEBUG                               177 #ifdef G4TWISTDEBUG
172    G4cout  << "normal vector = " << normal <<     178    G4cout  << "normal vector = " << normal << G4endl ;
173    G4cout << "phi = " << phi << " , u = " << u    179    G4cout << "phi = " << phi << " , u = " << u << G4endl ;
174 #endif                                            180 #endif
175                                                   181 
176    //    normal = normal/normal.mag() ;           182    //    normal = normal/normal.mag() ;
177                                                   183 
178    if (isGlobal)                               << 184    if (isGlobal) {
179    {                                           << 
180       fCurrentNormal.normal = ComputeGlobalDir    185       fCurrentNormal.normal = ComputeGlobalDirection(normal.unit());
181    }                                           << 186    } else {
182    else                                        << 
183    {                                           << 
184       fCurrentNormal.normal = normal.unit();      187       fCurrentNormal.normal = normal.unit();
185    }                                              188    }
186    return fCurrentNormal.normal;                  189    return fCurrentNormal.normal;
187 }                                                 190 }
188                                                   191 
189 //============================================    192 //=====================================================================
190 //* DistanceToSurface ------------------------    193 //* DistanceToSurface -------------------------------------------------
191                                                   194 
192 G4int G4TwistBoxSide::DistanceToSurface(const  << 195 G4int G4TwistBoxSide::DistanceToSurface(const G4ThreeVector &gp,
193                                         const  << 196                                         const G4ThreeVector &gv,
194                                                   197                                               G4ThreeVector  gxx[],
195                                                   198                                               G4double       distance[],
196                                                   199                                               G4int          areacode[],
197                                                   200                                               G4bool         isvalid[],
198                                                   201                                               EValidate      validate)
199 {                                                 202 {
200                                                   203 
                                                   >> 204   static const G4double ctol = 0.5 * kCarTolerance;
201   static const G4double pihalf = pi/2 ;           205   static const G4double pihalf = pi/2 ;
202   const G4double ctol = 0.5 * kCarTolerance;   << 
203                                                   206 
204   G4bool IsParallel = false ;                     207   G4bool IsParallel = false ;
205   G4bool IsConverged = false ;                 << 208   G4bool IsConverged =  false ;
206                                                   209 
207   G4int nxx = 0 ;  // number of physical solut    210   G4int nxx = 0 ;  // number of physical solutions
208                                                   211 
209   fCurStatWithV.ResetfDone(validate, &gp, &gv)    212   fCurStatWithV.ResetfDone(validate, &gp, &gv);
210                                                   213 
211   if (fCurStatWithV.IsDone())                  << 214   if (fCurStatWithV.IsDone()) {
212   {                                            << 215     G4int i;
213     for (G4int i=0; i<fCurStatWithV.GetNXX();  << 216     for (i=0; i<fCurStatWithV.GetNXX(); i++) {
214     {                                          << 
215       gxx[i] = fCurStatWithV.GetXX(i);            217       gxx[i] = fCurStatWithV.GetXX(i);
216       distance[i] = fCurStatWithV.GetDistance(    218       distance[i] = fCurStatWithV.GetDistance(i);
217       areacode[i] = fCurStatWithV.GetAreacode(    219       areacode[i] = fCurStatWithV.GetAreacode(i);
218       isvalid[i]  = fCurStatWithV.IsValid(i);     220       isvalid[i]  = fCurStatWithV.IsValid(i);
219     }                                             221     }
220     return fCurStatWithV.GetNXX();                222     return fCurStatWithV.GetNXX();
221   }                                            << 223   } else {
222   else  // initialize                          << 224    
223   {                                            << 225    // initialize
224     for (G4int i=0; i<G4VSURFACENXX ; ++i)     << 226     G4int i;
225     {                                          << 227     for (i=0; i<G4VSURFACENXX ; i++) {
226       distance[i] = kInfinity;                    228       distance[i] = kInfinity;
227       areacode[i] = sOutside;                     229       areacode[i] = sOutside;
228       isvalid[i]  = false;                        230       isvalid[i]  = false;
229       gxx[i].set(kInfinity, kInfinity, kInfini    231       gxx[i].set(kInfinity, kInfinity, kInfinity);
230     }                                             232     }
231   }                                               233   }
232                                                   234 
233   G4ThreeVector p = ComputeLocalPoint(gp);        235   G4ThreeVector p = ComputeLocalPoint(gp);
234   G4ThreeVector v = ComputeLocalDirection(gv);    236   G4ThreeVector v = ComputeLocalDirection(gv);
235                                                   237   
236 #ifdef G4TWISTDEBUG                               238 #ifdef G4TWISTDEBUG
237   G4cout << "Local point p = " << p << G4endl     239   G4cout << "Local point p = " << p << G4endl ;
238   G4cout << "Local direction v = " << v << G4e    240   G4cout << "Local direction v = " << v << G4endl ; 
239 #endif                                            241 #endif
240                                                   242 
241   G4double phi=0.,u=0.,q=0.;  // parameters    << 243   G4double phi,u ;  // parameters
242                                                   244 
243   // temporary variables                          245   // temporary variables
244                                                   246 
245   G4double      tmpdist = kInfinity ;             247   G4double      tmpdist = kInfinity ;
246   G4ThreeVector tmpxx;                            248   G4ThreeVector tmpxx;
247   G4int         tmpareacode = sOutside ;          249   G4int         tmpareacode = sOutside ;
248   G4bool        tmpisvalid  = false ;             250   G4bool        tmpisvalid  = false ;
249                                                   251 
250   std::vector<Intersection> xbuf ;                252   std::vector<Intersection> xbuf ;
251   Intersection xbuftmp ;                          253   Intersection xbuftmp ;
252                                                   254   
253   // prepare some variables for the intersecti    255   // prepare some variables for the intersection finder
254                                                   256 
255   G4double L = 2*fDz ;                            257   G4double L = 2*fDz ;
256                                                   258 
257   G4double phixz = fPhiTwist * ( p.x() * v.z()    259   G4double phixz = fPhiTwist * ( p.x() * v.z() - p.z() * v.x() ) ;
258   G4double phiyz = fPhiTwist * ( p.y() * v.z()    260   G4double phiyz = fPhiTwist * ( p.y() * v.z() - p.z() * v.y() ) ;
259                                                   261 
260   // special case vz = 0                          262   // special case vz = 0
261                                                   263 
262   if ( v.z() == 0. )                           << 264   if ( v.z() == 0. ) {         
263   {                                            << 
264     if ( (std::fabs(p.z()) <= L) && (fPhiTwist << 
265     {                                          << 
266       phi = p.z() * fPhiTwist / L ;  // phi is << 
267                                                   265 
268       q = (2.* fPhiTwist*((v.x() - fTAlph*v.y( << 266     if ( std::fabs(p.z()) <= L ) {     // intersection possible in z
269                              + (fTAlph*v.x() + << 
270                                                   267       
271       if (q != 0.0)                            << 268       phi = p.z() * fPhiTwist / L ;  // phi is determined by the z-position 
272       {                                        << 269 
273         u = (2*(-(fdeltaY*phi*v.x()) + fPhiTwi << 270       u = (2*(-(fdeltaY*phi*v.x()) + fPhiTwist*p.y()*v.x() + fdeltaX*phi*v.y() - fPhiTwist*p.x()*v.y()) + (fDx4plus2*fPhiTwist + 2*fDx4minus2*phi)*(v.y()*std::cos(phi) - v.x()*std::sin(phi)))/(2.* fPhiTwist*((v.x() - fTAlph*v.y())*std::cos(phi) + (fTAlph*v.x() + v.y())*std::sin(phi)))  ;
274                 + fdeltaX*phi*v.y() - fPhiTwis << 271 
275              + (fDx4plus2*fPhiTwist + 2*fDx4mi << 
276              * (v.y()*std::cos(phi) - v.x()*st << 
277       }                                        << 
278       xbuftmp.phi = phi ;                         272       xbuftmp.phi = phi ;
279       xbuftmp.u = u ;                             273       xbuftmp.u = u ;
280       xbuftmp.areacode = sOutside ;               274       xbuftmp.areacode = sOutside ;
281       xbuftmp.distance = kInfinity ;              275       xbuftmp.distance = kInfinity ;
282       xbuftmp.isvalid = false ;                   276       xbuftmp.isvalid = false ;
283                                                   277 
284       xbuf.push_back(xbuftmp) ;  // store it t    278       xbuf.push_back(xbuftmp) ;  // store it to xbuf
                                                   >> 279 
285     }                                             280     }
286     else                         // no interse << 281 
287     {                                          << 282     else {                        // no intersection possible
                                                   >> 283 
288       distance[0] = kInfinity;                    284       distance[0] = kInfinity;
289       gxx[0].set(kInfinity,kInfinity,kInfinity    285       gxx[0].set(kInfinity,kInfinity,kInfinity);
290       isvalid[0] = false ;                        286       isvalid[0] = false ;
291       areacode[0] = sOutside ;                    287       areacode[0] = sOutside ;
292       fCurStatWithV.SetCurrentStatus(0, gxx[0]    288       fCurStatWithV.SetCurrentStatus(0, gxx[0], distance[0],
293                                      areacode[    289                                      areacode[0], isvalid[0],
294                                      0, valida    290                                      0, validate, &gp, &gv);
295                                                   291       
296       return 0;                                   292       return 0;
297     }  // end std::fabs(p.z() <= L             << 293 
                                                   >> 294 
                                                   >> 295     }  // end std::fabs(p.z() <= L 
                                                   >> 296 
298   } // end v.z() == 0                             297   } // end v.z() == 0
299   else  // general solution for non-zero vz    << 298   
300   {                                            << 299 
301     G4double c[8],srd[7],si[7] ;               << 300   // general solution for non-zero vz
                                                   >> 301 
                                                   >> 302   else {
                                                   >> 303 
                                                   >> 304     G4double c[8],sr[7],si[7] ;  
302                                                   305 
303     c[7] = -14400*(-2*phixz + 2*fTAlph*phiyz +    306     c[7] = -14400*(-2*phixz + 2*fTAlph*phiyz + fDx4plus2*fPhiTwist*v.z()) ;
304     c[6] = 28800*(phiyz + 2*fDz*v.x() - (fdelt    307     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    308     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    309     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    310     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*    311     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    312     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()) -    313     c[0] = 36*(2* fDz*(v.x() - fTAlph*v.y()) - fdeltaX*v.z() + fdeltaY*fTAlph*v.z()) ;
311                                                   314 
                                                   >> 315 
312 #ifdef G4TWISTDEBUG                               316 #ifdef G4TWISTDEBUG
313     G4cout << "coef = " << c[0] << " "            317     G4cout << "coef = " << c[0] << " " 
314            <<  c[1] << " "                        318            <<  c[1] << " "  
315            <<  c[2] << " "                        319            <<  c[2] << " "  
316            <<  c[3] << " "                        320            <<  c[3] << " "  
317            <<  c[4] << " "                        321            <<  c[4] << " "  
318            <<  c[5] << " "                        322            <<  c[5] << " "  
319            <<  c[6] << " "                        323            <<  c[6] << " "  
320            <<  c[7] << G4endl ;                   324            <<  c[7] << G4endl ;
321 #endif                                            325 #endif    
322                                                   326 
323     G4JTPolynomialSolver trapEq ;                 327     G4JTPolynomialSolver trapEq ;
324     G4int num = trapEq.FindRoots(c,7,srd,si);  << 328     G4int num = trapEq.FindRoots(c,7,sr,si);
                                                   >> 329   
                                                   >> 330 
                                                   >> 331     for (G4int i = 0 ; i<num ; i++ ) {  // loop over all mathematical solutions
                                                   >> 332       if ( si[i]==0.0 ) {  // only real solutions
                                                   >> 333 #ifdef G4TWISTDEBUG
                                                   >> 334         G4cout << "Solution " << i << " : " << sr[i] << G4endl ;
                                                   >> 335 #endif
                                                   >> 336         phi = std::fmod(sr[i] , pihalf)  ;
325                                                   337 
326     for (G4int i = 0 ; i<num ; ++i )    // loo << 338         u   = (2*phiyz + 4*fDz*phi*v.y() - 2*fdeltaY*phi*v.z() - fDx4plus2*fPhiTwist*v.z()*std::sin(phi) - 2*fDx4minus2*phi*v.z()*std::sin(phi))/(2*fPhiTwist*v.z()*std::cos(phi) + 2*fPhiTwist*fTAlph*v.z()*std::sin(phi)) ;
327     {                                          << 
328       if ( (si[i]==0.0) && (fPhiTwist != 0.0)  << 
329       {                                        << 
330 #ifdef G4TWISTDEBUG                            << 
331         G4cout << "Solution " << i << " : " << << 
332 #endif                                         << 
333         phi = std::fmod(srd[i], pihalf) ;      << 
334                                                << 
335         u   = (2*phiyz + 4*fDz*phi*v.y() - 2*f << 
336              - fDx4plus2*fPhiTwist*v.z()*std:: << 
337              - 2*fDx4minus2*phi*v.z()*std::sin << 
338              /(2*fPhiTwist*v.z()*std::cos(phi) << 
339                + 2*fPhiTwist*fTAlph*v.z()*std: << 
340                                                   339 
341         xbuftmp.phi = phi ;                       340         xbuftmp.phi = phi ;
342         xbuftmp.u = u ;                           341         xbuftmp.u = u ;
343         xbuftmp.areacode = sOutside ;             342         xbuftmp.areacode = sOutside ;
344         xbuftmp.distance = kInfinity ;            343         xbuftmp.distance = kInfinity ;
345         xbuftmp.isvalid = false ;                 344         xbuftmp.isvalid = false ;
346                                                   345         
347         xbuf.push_back(xbuftmp) ;  // store it    346         xbuf.push_back(xbuftmp) ;  // store it to xbuf
348                                                   347       
349 #ifdef G4TWISTDEBUG                               348 #ifdef G4TWISTDEBUG
350         G4cout << "solution " << i << " = " <<    349         G4cout << "solution " << i << " = " << phi << " , " << u  << G4endl ;
351 #endif                                            350 #endif
                                                   >> 351 
352       }  // end if real solution                  352       }  // end if real solution
353     }  // end loop i                              353     }  // end loop i
354   }  // end general case                       << 354     
                                                   >> 355   }    // end general case
355                                                   356 
356                                                   357 
357   nxx = (G4int)xbuf.size() ;  // save the numb << 358   nxx = xbuf.size() ;  // save the number of  solutions
358                                                   359 
359   G4ThreeVector xxonsurface  ;       // point     360   G4ThreeVector xxonsurface  ;       // point on surface
360   G4ThreeVector surfacenormal  ;     // normal    361   G4ThreeVector surfacenormal  ;     // normal vector  
361   G4double deltaX  ;                 // distan << 362   G4double deltaX  ;                 // distance between intersection point and point on surface
362                                      // point  << 
363   G4double theta  ;                  // angle     363   G4double theta  ;                  // angle between track and surfacenormal
364   G4double factor ;                  // a scal    364   G4double factor ;                  // a scaling factor
365   G4int maxint = 30 ;                // number    365   G4int maxint = 30 ;                // number of iterations
366                                                   366 
367                                                   367 
368   for (auto & k : xbuf)                        << 368   for ( size_t k = 0 ; k<xbuf.size() ; k++ ) {
369   {                                            << 369 
370 #ifdef G4TWISTDEBUG                               370 #ifdef G4TWISTDEBUG
371     G4cout << "Solution " << k << " : "           371     G4cout << "Solution " << k << " : " 
372            << "reconstructed phiR = " << xbuf[    372            << "reconstructed phiR = " << xbuf[k].phi
373            << ", uR = " << xbuf[k].u << G4endl    373            << ", uR = " << xbuf[k].u << G4endl ; 
374 #endif                                            374 #endif
375                                                   375     
376     phi = k.phi ;  // get the stored values fo << 376     phi = xbuf[k].phi ;  // get the stored values for phi and u
377     u = k.u ;                                  << 377     u = xbuf[k].u ;
378                                                   378 
379     IsConverged = false ;   // no convergence     379     IsConverged = false ;   // no convergence at the beginning
380                                                   380     
381     for ( G4int i = 1 ; i<maxint ; ++i )       << 381     for ( G4int i = 1 ; i<maxint ; i++ ) {
382     {                                          << 382       
383       xxonsurface = SurfacePoint(phi,u) ;         383       xxonsurface = SurfacePoint(phi,u) ;
384       surfacenormal = NormAng(phi,u) ;            384       surfacenormal = NormAng(phi,u) ;
385       tmpdist = DistanceToPlaneWithV(p, v, xxo    385       tmpdist = DistanceToPlaneWithV(p, v, xxonsurface, surfacenormal, tmpxx); 
386       deltaX = ( tmpxx - xxonsurface ).mag() ;    386       deltaX = ( tmpxx - xxonsurface ).mag() ; 
387       theta = std::fabs(std::acos(v*surfacenor    387       theta = std::fabs(std::acos(v*surfacenormal) - pihalf) ;
388       if ( theta < 0.001 )                     << 388       if ( theta < 0.001 ) { 
389       {                                        << 
390         factor = 50 ;                             389         factor = 50 ;
391         IsParallel = true ;                       390         IsParallel = true ;
392       }                                           391       }
393       else                                     << 392       else {
394       {                                        << 
395         factor = 1 ;                              393         factor = 1 ;
396       }                                           394       }
397                                                   395 
398 #ifdef G4TWISTDEBUG                               396 #ifdef G4TWISTDEBUG
399       G4cout << "Step i = " << i << ", distanc    397       G4cout << "Step i = " << i << ", distance = " << tmpdist << ", " << deltaX << G4endl ;
400       G4cout << "X = " << tmpxx << G4endl ;       398       G4cout << "X = " << tmpxx << G4endl ;
401 #endif                                            399 #endif
402                                                   400       
403       GetPhiUAtX(tmpxx, phi, u) ; // the new p    401       GetPhiUAtX(tmpxx, phi, u) ; // the new point xx is accepted and phi/u replaced
404                                                   402       
405 #ifdef G4TWISTDEBUG                               403 #ifdef G4TWISTDEBUG
406       G4cout << "approximated phi = " << phi <    404       G4cout << "approximated phi = " << phi << ", u = " << u << G4endl ; 
407 #endif                                            405 #endif
408                                                   406       
409       if ( deltaX <= factor*ctol ) { IsConverg    407       if ( deltaX <= factor*ctol ) { IsConverged = true ; break ; }
410                                                   408       
411     }  // end iterative loop (i)                  409     }  // end iterative loop (i)
                                                   >> 410     
412                                                   411 
413     if ( std::fabs(tmpdist)<ctol ) tmpdist = 0 << 412     // new code  21.09.05 O.Link
                                                   >> 413     if ( std::fabs(tmpdist)<ctol ) tmpdist = 0 ; 
414                                                   414 
415 #ifdef G4TWISTDEBUG                               415 #ifdef G4TWISTDEBUG
416     G4cout << "refined solution "  << phi << "    416     G4cout << "refined solution "  << phi << " , " << u  <<  G4endl ;
417     G4cout << "distance = " << tmpdist << G4en    417     G4cout << "distance = " << tmpdist << G4endl ;
418     G4cout << "local X = " << tmpxx << G4endl     418     G4cout << "local X = " << tmpxx << G4endl ;
419 #endif                                            419 #endif
420                                                   420     
421     tmpisvalid = false ;  // init                 421     tmpisvalid = false ;  // init 
422                                                   422 
423     if ( IsConverged )                         << 423     if ( IsConverged ) {
424     {                                          << 424       
425       if (validate == kValidateWithTol)        << 425       if (validate == kValidateWithTol) {
426       {                                        << 
427         tmpareacode = GetAreaCode(tmpxx);         426         tmpareacode = GetAreaCode(tmpxx);
428         if (!IsOutside(tmpareacode))           << 427         if (!IsOutside(tmpareacode)) {
429         {                                      << 
430           if (tmpdist >= 0) tmpisvalid = true;    428           if (tmpdist >= 0) tmpisvalid = true;
431         }                                         429         }
432       }                                        << 430       } else if (validate == kValidateWithoutTol) {
433       else if (validate == kValidateWithoutTol << 
434       {                                        << 
435         tmpareacode = GetAreaCode(tmpxx, false    431         tmpareacode = GetAreaCode(tmpxx, false);
436         if (IsInside(tmpareacode))             << 432         if (IsInside(tmpareacode)) {
437         {                                      << 
438           if (tmpdist >= 0) tmpisvalid = true;    433           if (tmpdist >= 0) tmpisvalid = true;
439         }                                         434         }
440       }                                        << 435       } else { // kDontValidate
441       else   // kDontValidate                  << 
442       {                                        << 
443         G4Exception("G4TwistBoxSide::DistanceT    436         G4Exception("G4TwistBoxSide::DistanceToSurface()",
444                     "GeomSolids0001", FatalExc << 437                     "NotImplemented kDontValidate", FatalException,
445                     "Feature NOT implemented !    438                     "Feature NOT implemented !");
446       }                                           439       }
447     }                                          << 440 
448     else                                       << 441     } 
449     {                                          << 442     else {
450       tmpdist = kInfinity;     // no convergen    443       tmpdist = kInfinity;     // no convergence after 10 steps 
451       tmpisvalid = false ;     // solution is     444       tmpisvalid = false ;     // solution is not vaild
452     }                                             445     }  
453                                                   446 
                                                   >> 447 
454     // store the found values                     448     // store the found values 
455     k.xx = tmpxx ;                             << 449     xbuf[k].xx = tmpxx ;
456     k.distance = tmpdist ;                     << 450     xbuf[k].distance = tmpdist ;
457     k.areacode = tmpareacode ;                 << 451     xbuf[k].areacode = tmpareacode ;
458     k.isvalid = tmpisvalid ;                   << 452     xbuf[k].isvalid = tmpisvalid ;
                                                   >> 453 
459                                                   454 
460   }  // end loop over physical solutions (vari    455   }  // end loop over physical solutions (variable k)
461                                                   456 
                                                   >> 457 
462   std::sort(xbuf.begin() , xbuf.end(), Distanc    458   std::sort(xbuf.begin() , xbuf.end(), DistanceSort ) ;  // sorting
463                                                   459 
464 #ifdef G4TWISTDEBUG                               460 #ifdef G4TWISTDEBUG
465   G4cout << G4endl << "list xbuf after sorting    461   G4cout << G4endl << "list xbuf after sorting : " << G4endl ;
466   G4cout << G4endl << G4endl ;                    462   G4cout << G4endl << G4endl ;
467 #endif                                            463 #endif
468                                                   464 
                                                   >> 465 
469   // erase identical intersection (within kCar    466   // erase identical intersection (within kCarTolerance) 
470   xbuf.erase(std::unique(xbuf.begin(),xbuf.end << 467   xbuf.erase( std::unique(xbuf.begin(), xbuf.end() , EqualIntersection ) , xbuf.end() ) ;
                                                   >> 468 
471                                                   469 
472   // add guesses                                  470   // add guesses
473                                                   471 
474   auto nxxtmp = (G4int)xbuf.size() ;           << 472   G4int nxxtmp = xbuf.size() ;
                                                   >> 473 
                                                   >> 474   if ( nxxtmp<2 || IsParallel  ) {
475                                                   475 
476   if ( nxxtmp<2 || IsParallel  )               << 
477   {                                            << 
478     // positive end                               476     // positive end
479 #ifdef G4TWISTDEBUG                               477 #ifdef G4TWISTDEBUG
480     G4cout << "add guess at +z/2 .. " << G4end    478     G4cout << "add guess at +z/2 .. " << G4endl ;
481 #endif                                            479 #endif
482                                                   480 
483     phi = fPhiTwist/2 ;                           481     phi = fPhiTwist/2 ;
484     u   = 0. ;                                 << 482     u   = 0 ;
                                                   >> 483 
                                                   >> 484     
                                                   >> 485      
485     xbuftmp.phi = phi ;                           486     xbuftmp.phi = phi ;
486     xbuftmp.u = u ;                               487     xbuftmp.u = u ;
487     xbuftmp.areacode = sOutside ;                 488     xbuftmp.areacode = sOutside ;
488     xbuftmp.distance = kInfinity ;                489     xbuftmp.distance = kInfinity ;
489     xbuftmp.isvalid = false ;                     490     xbuftmp.isvalid = false ;
490                                                   491     
491     xbuf.push_back(xbuftmp) ;  // store it to     492     xbuf.push_back(xbuftmp) ;  // store it to xbuf
492                                                   493 
                                                   >> 494 
493 #ifdef G4TWISTDEBUG                               495 #ifdef G4TWISTDEBUG
494     G4cout << "add guess at -z/2 .. " << G4end    496     G4cout << "add guess at -z/2 .. " << G4endl ;
495 #endif                                            497 #endif
496                                                   498 
497     phi = -fPhiTwist/2 ;                          499     phi = -fPhiTwist/2 ;
498     u   = 0. ;                                 << 500     u   = 0 ;
499                                                   501 
500     xbuftmp.phi = phi ;                           502     xbuftmp.phi = phi ;
501     xbuftmp.u = u ;                               503     xbuftmp.u = u ;
502     xbuftmp.areacode = sOutside ;                 504     xbuftmp.areacode = sOutside ;
503     xbuftmp.distance = kInfinity ;                505     xbuftmp.distance = kInfinity ;
504     xbuftmp.isvalid = false ;                     506     xbuftmp.isvalid = false ;
505                                                   507     
506     xbuf.push_back(xbuftmp) ;  // store it to     508     xbuf.push_back(xbuftmp) ;  // store it to xbuf
507                                                   509 
508     for ( std::size_t k = nxxtmp ; k<xbuf.size << 510     for ( size_t k = nxxtmp ; k<xbuf.size() ; k++ ) {
509     {                                          << 511 
510 #ifdef G4TWISTDEBUG                               512 #ifdef G4TWISTDEBUG
511       G4cout << "Solution " << k << " : "         513       G4cout << "Solution " << k << " : " 
512              << "reconstructed phiR = " << xbu    514              << "reconstructed phiR = " << xbuf[k].phi
513              << ", uR = " << xbuf[k].u << G4en    515              << ", uR = " << xbuf[k].u << G4endl ; 
514 #endif                                            516 #endif
515                                                   517       
516       phi = xbuf[k].phi ;  // get the stored v    518       phi = xbuf[k].phi ;  // get the stored values for phi and u
517       u   = xbuf[k].u ;                           519       u   = xbuf[k].u ;
518                                                   520 
519       IsConverged = false ;   // no convergenc    521       IsConverged = false ;   // no convergence at the beginning
520                                                   522       
521       for ( G4int i = 1 ; i<maxint ; ++i )     << 523       for ( G4int i = 1 ; i<maxint ; i++ ) {
522       {                                        << 524         
523         xxonsurface = SurfacePoint(phi,u) ;       525         xxonsurface = SurfacePoint(phi,u) ;
524         surfacenormal = NormAng(phi,u) ;          526         surfacenormal = NormAng(phi,u) ;
525         tmpdist = DistanceToPlaneWithV(p, v, x << 527         tmpdist = DistanceToPlaneWithV(p, v, xxonsurface, surfacenormal, tmpxx); 
526         deltaX = ( tmpxx - xxonsurface ).mag()    528         deltaX = ( tmpxx - xxonsurface ).mag() ; 
527         theta = std::fabs(std::acos(v*surfacen    529         theta = std::fabs(std::acos(v*surfacenormal) - pihalf) ;
528         if ( theta < 0.001 )                   << 530         if ( theta < 0.001 ) { 
529         {                                      << 
530           factor = 50 ;                           531           factor = 50 ;    
531         }                                         532         }
532         else                                   << 533         else {
533         {                                      << 
534           factor = 1 ;                            534           factor = 1 ;
535         }                                         535         }
536                                                   536         
537 #ifdef G4TWISTDEBUG                               537 #ifdef G4TWISTDEBUG
538         G4cout << "Step i = " << i << ", dista << 538         G4cout << "Step i = " << i << ", distance = " << tmpdist << ", " << deltaX << G4endl ;
539                << tmpdist << ", " << deltaX << << 
540         G4cout << "X = " << tmpxx << G4endl ;     539         G4cout << "X = " << tmpxx << G4endl ;
541 #endif                                            540 #endif
542                                                   541 
543         GetPhiUAtX(tmpxx, phi, u) ;            << 542         GetPhiUAtX(tmpxx, phi, u) ; // the new point xx is accepted and phi/u replaced
544           // the new point xx is accepted and  << 
545                                                   543       
546 #ifdef G4TWISTDEBUG                               544 #ifdef G4TWISTDEBUG
547         G4cout << "approximated phi = " << phi    545         G4cout << "approximated phi = " << phi << ", u = " << u << G4endl ; 
548 #endif                                            546 #endif
549                                                   547       
550         if ( deltaX <= factor*ctol ) { IsConve    548         if ( deltaX <= factor*ctol ) { IsConverged = true ; break ; }
551                                                   549       
552       }  // end iterative loop (i)                550       }  // end iterative loop (i)
                                                   >> 551     
553                                                   552 
554     if ( std::fabs(tmpdist)<ctol ) tmpdist = 0 << 553     // new code  21.09.05 O.Link
                                                   >> 554     if ( std::fabs(tmpdist)<ctol ) tmpdist = 0 ; 
555                                                   555 
556 #ifdef G4TWISTDEBUG                               556 #ifdef G4TWISTDEBUG
557       G4cout << "refined solution "  << phi <<    557       G4cout << "refined solution "  << phi << " , " << u  <<  G4endl ;
558       G4cout << "distance = " << tmpdist << G4    558       G4cout << "distance = " << tmpdist << G4endl ;
559       G4cout << "local X = " << tmpxx << G4end    559       G4cout << "local X = " << tmpxx << G4endl ;
560 #endif                                            560 #endif
561                                                   561 
562       tmpisvalid = false ;  // init               562       tmpisvalid = false ;  // init 
563                                                   563 
564       if ( IsConverged )                       << 564       if ( IsConverged ) {
565       {                                        << 565 
566         if (validate == kValidateWithTol)      << 566         if (validate == kValidateWithTol) {
567         {                                      << 
568           tmpareacode = GetAreaCode(tmpxx);       567           tmpareacode = GetAreaCode(tmpxx);
569           if (!IsOutside(tmpareacode))         << 568           if (!IsOutside(tmpareacode)) {
570           {                                    << 
571             if (tmpdist >= 0) tmpisvalid = tru    569             if (tmpdist >= 0) tmpisvalid = true;
572           }                                       570           }
573         }                                      << 571         } else if (validate == kValidateWithoutTol) {
574         else if (validate == kValidateWithoutT << 
575         {                                      << 
576           tmpareacode = GetAreaCode(tmpxx, fal    572           tmpareacode = GetAreaCode(tmpxx, false);
577           if (IsInside(tmpareacode))           << 573           if (IsInside(tmpareacode)) {
578           {                                    << 
579             if (tmpdist >= 0) tmpisvalid = tru    574             if (tmpdist >= 0) tmpisvalid = true;
580           }                                       575           }
581         }                                      << 576         } else { // kDontValidate
582         else   // kDontValidate                << 
583         {                                      << 
584           G4Exception("G4TwistedBoxSide::Dista    577           G4Exception("G4TwistedBoxSide::DistanceToSurface()",
585                       "GeomSolids0001", FatalE << 578                       "NotImplemented kDontValidate", FatalException,
586                       "Feature NOT implemented    579                       "Feature NOT implemented !");
587         }                                         580         }
588       }                                        << 581         
589       else                                     << 582       } 
590       {                                        << 583       else {
591         tmpdist = kInfinity;     // no converg    584         tmpdist = kInfinity;     // no convergence after 10 steps 
592         tmpisvalid = false ;     // solution i    585         tmpisvalid = false ;     // solution is not vaild
593       }                                           586       }  
594                                                << 587         
                                                   >> 588         
595       // store the found values                   589       // store the found values 
596       xbuf[k].xx = tmpxx ;                        590       xbuf[k].xx = tmpxx ;
597       xbuf[k].distance = tmpdist ;                591       xbuf[k].distance = tmpdist ;
598       xbuf[k].areacode = tmpareacode ;            592       xbuf[k].areacode = tmpareacode ;
599       xbuf[k].isvalid = tmpisvalid ;              593       xbuf[k].isvalid = tmpisvalid ;
                                                   >> 594 
                                                   >> 595 
600     }  // end loop over physical solutions        596     }  // end loop over physical solutions 
                                                   >> 597 
                                                   >> 598 
601   }  // end less than 2 solutions                 599   }  // end less than 2 solutions
602                                                   600 
                                                   >> 601 
603   // sort again                                   602   // sort again
604   std::sort(xbuf.begin() , xbuf.end(), Distanc    603   std::sort(xbuf.begin() , xbuf.end(), DistanceSort ) ;  // sorting
605                                                   604 
606   // erase identical intersection (within kCar    605   // erase identical intersection (within kCarTolerance) 
607   xbuf.erase(std::unique(xbuf.begin(),xbuf.end << 606   xbuf.erase( std::unique(xbuf.begin(), xbuf.end() , EqualIntersection ) , xbuf.end() ) ;
608                                                   607 
609 #ifdef G4TWISTDEBUG                               608 #ifdef G4TWISTDEBUG
610   G4cout << G4endl << "list xbuf after sorting    609   G4cout << G4endl << "list xbuf after sorting : " << G4endl ;
611   G4cout << G4endl << G4endl ;                    610   G4cout << G4endl << G4endl ;
612 #endif                                            611 #endif
613                                                   612 
614   nxx = (G4int)xbuf.size() ;   // determine nu << 613   nxx = xbuf.size() ;   // determine number of solutions again.
615                                                   614 
616   for ( G4int i = 0 ; i<(G4int)xbuf.size() ; + << 615   for ( size_t i = 0 ; i<xbuf.size() ; i++ ) {
617   {                                            << 616     
618     distance[i] = xbuf[i].distance;               617     distance[i] = xbuf[i].distance;
619     gxx[i]      = ComputeGlobalPoint(xbuf[i].x    618     gxx[i]      = ComputeGlobalPoint(xbuf[i].xx);
620     areacode[i] = xbuf[i].areacode ;              619     areacode[i] = xbuf[i].areacode ;
621     isvalid[i]  = xbuf[i].isvalid ;               620     isvalid[i]  = xbuf[i].isvalid ;
622                                                   621     
623     fCurStatWithV.SetCurrentStatus(i, gxx[i],     622     fCurStatWithV.SetCurrentStatus(i, gxx[i], distance[i], areacode[i],
624                                      isvalid[i    623                                      isvalid[i], nxx, validate, &gp, &gv);
625                                                   624 
626 #ifdef G4TWISTDEBUG                               625 #ifdef G4TWISTDEBUG
627     G4cout << "element Nr. " << i                 626     G4cout << "element Nr. " << i 
628            << ", local Intersection = " << xbu    627            << ", local Intersection = " << xbuf[i].xx 
629            << ", distance = " << xbuf[i].dista    628            << ", distance = " << xbuf[i].distance 
630            << ", u = " << xbuf[i].u               629            << ", u = " << xbuf[i].u 
631            << ", phi = " << xbuf[i].phi           630            << ", phi = " << xbuf[i].phi 
632            << ", isvalid = " << xbuf[i].isvali    631            << ", isvalid = " << xbuf[i].isvalid 
633            << G4endl ;                            632            << G4endl ;
634 #endif                                            633 #endif
635                                                   634 
636   }  // end for( i ) loop                         635   }  // end for( i ) loop
637                                                   636 
                                                   >> 637     
638 #ifdef G4TWISTDEBUG                               638 #ifdef G4TWISTDEBUG
639   G4cout << "G4TwistBoxSide finished " << G4en    639   G4cout << "G4TwistBoxSide finished " << G4endl ;
640   G4cout << nxx << " possible physical solutio    640   G4cout << nxx << " possible physical solutions found" << G4endl ;
641   for ( G4int k= 0 ; k< nxx ; ++k )            << 641   for ( G4int k= 0 ; k< nxx ; k++ ) {
642   {                                            << 
643     G4cout << "global intersection Point found    642     G4cout << "global intersection Point found: " << gxx[k] << G4endl ;
644     G4cout << "distance = " << distance[k] <<     643     G4cout << "distance = " << distance[k] << G4endl ;
645     G4cout << "isvalid = " << isvalid[k] << G4    644     G4cout << "isvalid = " << isvalid[k] << G4endl ;
646   }                                               645   }
647 #endif                                            646 #endif
648                                                   647 
649   return nxx ;                                    648   return nxx ;
                                                   >> 649     
650 }                                                 650 }
651                                                   651 
                                                   >> 652 
652 //============================================    653 //=====================================================================
653 //* DistanceToSurface ------------------------    654 //* DistanceToSurface -------------------------------------------------
654                                                   655 
655 G4int G4TwistBoxSide::DistanceToSurface(const  << 656 G4int G4TwistBoxSide::DistanceToSurface(const G4ThreeVector &gp,
656                                                << 657                                                 G4ThreeVector  gxx[],
657                                                << 658                                                 G4double       distance[],
658                                                << 659                                                 G4int          areacode[])
659 {                                                 660 {  
660   const G4double ctol = 0.5 * kCarTolerance;   << 661   // to do
                                                   >> 662 
                                                   >> 663   static const G4double ctol = 0.5 * kCarTolerance;
661                                                   664 
662   fCurStat.ResetfDone(kDontValidate, &gp);        665   fCurStat.ResetfDone(kDontValidate, &gp);
663                                                   666 
664    if (fCurStat.IsDone())                      << 667    if (fCurStat.IsDone()) {
665    {                                           << 668       G4int i;
666       for (G4int i=0; i<fCurStat.GetNXX(); ++i << 669       for (i=0; i<fCurStat.GetNXX(); i++) {
667       {                                        << 
668          gxx[i] = fCurStat.GetXX(i);              670          gxx[i] = fCurStat.GetXX(i);
669          distance[i] = fCurStat.GetDistance(i)    671          distance[i] = fCurStat.GetDistance(i);
670          areacode[i] = fCurStat.GetAreacode(i)    672          areacode[i] = fCurStat.GetAreacode(i);
671       }                                           673       }
672       return fCurStat.GetNXX();                   674       return fCurStat.GetNXX();
673    }                                           << 675    } else {
674    else  // initialize                         << 676       // initialize
675    {                                           << 677       G4int i;
676       for (G4int i=0; i<G4VSURFACENXX; ++i)    << 678       for (i=0; i<G4VSURFACENXX; i++) {
677       {                                        << 
678          distance[i] = kInfinity;                 679          distance[i] = kInfinity;
679          areacode[i] = sOutside;                  680          areacode[i] = sOutside;
680          gxx[i].set(kInfinity, kInfinity, kInf    681          gxx[i].set(kInfinity, kInfinity, kInfinity);
681       }                                           682       }
682    }                                              683    }
683                                                   684    
684    G4ThreeVector p = ComputeLocalPoint(gp);       685    G4ThreeVector p = ComputeLocalPoint(gp);
685    G4ThreeVector xx;  // intersection point       686    G4ThreeVector xx;  // intersection point
686    G4ThreeVector xxonsurface ; // interpolated    687    G4ThreeVector xxonsurface ; // interpolated intersection point 
687                                                   688 
688    // the surfacenormal at that surface point     689    // the surfacenormal at that surface point
689    G4double phiR = 0. ;                        << 690    G4double phiR = 0  ; // 
690    G4double uR = 0. ;                          << 691    G4double uR = 0 ;
691                                                   692 
692    G4ThreeVector surfacenormal ;                  693    G4ThreeVector surfacenormal ; 
693    G4double deltaX ;                              694    G4double deltaX ;
694                                                   695    
695    G4int maxint = 20 ;                            696    G4int maxint = 20 ;
696                                                   697 
697    for ( G4int i = 1 ; i<maxint ; ++i )        << 698    for ( G4int i = 1 ; i<maxint ; i++ ) {
698    {                                           << 699 
699      xxonsurface = SurfacePoint(phiR,uR) ;        700      xxonsurface = SurfacePoint(phiR,uR) ;
700      surfacenormal = NormAng(phiR,uR) ;           701      surfacenormal = NormAng(phiR,uR) ;
701      distance[0] = DistanceToPlane(p, xxonsurf    702      distance[0] = DistanceToPlane(p, xxonsurface, surfacenormal, xx); // new XX
702      deltaX = ( xx - xxonsurface ).mag() ;        703      deltaX = ( xx - xxonsurface ).mag() ; 
703                                                   704 
704 #ifdef G4TWISTDEBUG                               705 #ifdef G4TWISTDEBUG
705      G4cout << "i = " << i << ", distance = "  << 706      G4cout << "i = " << i << ", distance = " << distance[0] << ", " << deltaX << G4endl ;
706             << ", " << deltaX << G4endl ;      << 
707      G4cout << "X = " << xx << G4endl ;           707      G4cout << "X = " << xx << G4endl ;
708 #endif                                            708 #endif
709                                                   709 
710      // the new point xx is accepted and phi/p    710      // the new point xx is accepted and phi/psi replaced
711      GetPhiUAtX(xx, phiR, uR) ;                   711      GetPhiUAtX(xx, phiR, uR) ;
712                                                   712      
713      if ( deltaX <= ctol ) { break ; }            713      if ( deltaX <= ctol ) { break ; }
                                                   >> 714 
714    }                                              715    }
715                                                   716 
716    // check validity of solution ( valid phi,p    717    // check validity of solution ( valid phi,psi ) 
717                                                   718 
718    G4double halfphi = 0.5*fPhiTwist ;             719    G4double halfphi = 0.5*fPhiTwist ;
719    G4double uMax = GetBoundaryMax(phiR) ;         720    G4double uMax = GetBoundaryMax(phiR) ;
720                                                   721 
721    if (  phiR > halfphi ) phiR =  halfphi ;       722    if (  phiR > halfphi ) phiR =  halfphi ;
722    if ( phiR < -halfphi ) phiR = -halfphi ;       723    if ( phiR < -halfphi ) phiR = -halfphi ;
723    if ( uR > uMax ) uR = uMax ;                   724    if ( uR > uMax ) uR = uMax ;
724    if ( uR < -uMax ) uR = -uMax ;                 725    if ( uR < -uMax ) uR = -uMax ;
725                                                   726 
726    xxonsurface = SurfacePoint(phiR,uR) ;          727    xxonsurface = SurfacePoint(phiR,uR) ;
727    distance[0] = (  p - xx ).mag() ;              728    distance[0] = (  p - xx ).mag() ;
728    if ( distance[0] <= ctol ) { distance[0] =     729    if ( distance[0] <= ctol ) { distance[0] = 0 ; } 
729                                                   730 
730    // end of validity                             731    // end of validity 
731                                                   732 
732 #ifdef G4TWISTDEBUG                               733 #ifdef G4TWISTDEBUG
733    G4cout << "refined solution "  << phiR << "    734    G4cout << "refined solution "  << phiR << " , " << uR << " , " <<  G4endl ;
734    G4cout << "distance = " << distance[0] << G    735    G4cout << "distance = " << distance[0] << G4endl ;
735    G4cout << "X = " << xx << G4endl ;             736    G4cout << "X = " << xx << G4endl ;
736 #endif                                            737 #endif
737                                                   738 
738    G4bool isvalid = true;                         739    G4bool isvalid = true;
739    gxx[0] = ComputeGlobalPoint(xx);            << 740    gxx[0]      = ComputeGlobalPoint(xx);
740                                                   741    
741 #ifdef G4TWISTDEBUG                               742 #ifdef G4TWISTDEBUG
742    G4cout << "intersection Point found: " << g    743    G4cout << "intersection Point found: " << gxx[0] << G4endl ;
743    G4cout << "distance = " << distance[0] << G    744    G4cout << "distance = " << distance[0] << G4endl ;
744 #endif                                            745 #endif
745                                                   746 
746    fCurStat.SetCurrentStatus(0, gxx[0], distan    747    fCurStat.SetCurrentStatus(0, gxx[0], distance[0], areacode[0],
747                             isvalid, 1, kDontV    748                             isvalid, 1, kDontValidate, &gp);
748    return 1;                                      749    return 1;
                                                   >> 750    
                                                   >> 751 
749 }                                                 752 }
750                                                   753 
                                                   >> 754 
751 //============================================    755 //=====================================================================
752 //* GetAreaCode ------------------------------    756 //* GetAreaCode -------------------------------------------------------
753                                                   757 
754 G4int G4TwistBoxSide::GetAreaCode(const G4Thre << 758 G4int G4TwistBoxSide::GetAreaCode(const G4ThreeVector &xx, 
755                                         G4bool << 759                                           G4bool withTol)
756 {                                                 760 {
757    // We must use the function in local coordi    761    // We must use the function in local coordinate system.
758    // See the description of DistanceToSurface    762    // See the description of DistanceToSurface(p,v).
759                                                   763    
760    const G4double ctol = 0.5 * kCarTolerance;  << 764    static const G4double ctol = 0.5 * kCarTolerance;
761                                                   765 
762    G4double phi ;                                 766    G4double phi ;
763    G4double yprime ;                              767    G4double yprime ;
764    GetPhiUAtX(xx, phi,yprime ) ;                  768    GetPhiUAtX(xx, phi,yprime ) ;
765                                                   769 
766    G4double fYAxisMax =  GetBoundaryMax(phi) ;    770    G4double fYAxisMax =  GetBoundaryMax(phi) ;   // Boundaries are symmetric
767    G4double fYAxisMin =  - fYAxisMax ;            771    G4double fYAxisMin =  - fYAxisMax ;
768                                                   772 
769 #ifdef G4TWISTDEBUG                               773 #ifdef G4TWISTDEBUG
770    G4cout << "GetAreaCode: phi = " << phi << G    774    G4cout << "GetAreaCode: phi = " << phi << G4endl ;
771    G4cout << "GetAreaCode: yprime = " << yprim    775    G4cout << "GetAreaCode: yprime = " << yprime << G4endl ;
772    G4cout << "Intervall is " << fYAxisMin << "    776    G4cout << "Intervall is " << fYAxisMin << " to " << fYAxisMax << G4endl ;
773 #endif                                            777 #endif
774                                                   778 
775    G4int areacode = sInside;                      779    G4int areacode = sInside;
776                                                   780    
777    if (fAxis[0] == kYAxis && fAxis[1] == kZAxi << 781    if (fAxis[0] == kYAxis && fAxis[1] == kZAxis) {
778    {                                           << 782 
779       G4int zaxis = 1;                            783       G4int zaxis = 1;
780                                                   784       
781       if (withTol)                             << 785       if (withTol) {
782       {                                        << 786 
783         G4bool isoutside = false;              << 787         G4bool isoutside   = false;
784                                                   788         
785         // test boundary of yaxis                 789         // test boundary of yaxis
786                                                   790 
787          if (yprime < fYAxisMin + ctol)        << 791          if (yprime < fYAxisMin + ctol) {
788          {                                     << 
789             areacode |= (sAxis0 & (sAxisY | sA    792             areacode |= (sAxis0 & (sAxisY | sAxisMin)) | sBoundary; 
790             if (yprime <= fYAxisMin - ctol) is    793             if (yprime <= fYAxisMin - ctol) isoutside = true;
791                                                   794 
792          }                                     << 795          } else if (yprime > fYAxisMax - ctol) {
793          else if (yprime > fYAxisMax - ctol)   << 
794          {                                     << 
795             areacode |= (sAxis0 & (sAxisY | sA    796             areacode |= (sAxis0 & (sAxisY | sAxisMax)) | sBoundary;
796             if (yprime >= fYAxisMax + ctol)  i    797             if (yprime >= fYAxisMax + ctol)  isoutside = true;
797          }                                        798          }
798                                                   799 
799          // test boundary of z-axis               800          // test boundary of z-axis
800                                                   801 
801          if (xx.z() < fAxisMin[zaxis] + ctol)  << 802          if (xx.z() < fAxisMin[zaxis] + ctol) {
802          {                                     << 
803             areacode |= (sAxis1 & (sAxisZ | sA    803             areacode |= (sAxis1 & (sAxisZ | sAxisMin)); 
804                                                   804 
805             if   ((areacode & sBoundary) != 0) << 805             if   (areacode & sBoundary) areacode |= sCorner;  // xx is on the corner.
806             else                        areaco    806             else                        areacode |= sBoundary;
807             if (xx.z() <= fAxisMin[zaxis] - ct    807             if (xx.z() <= fAxisMin[zaxis] - ctol) isoutside = true;
808                                                   808 
809          }                                     << 809          } else if (xx.z() > fAxisMax[zaxis] - ctol) {
810          else if (xx.z() > fAxisMax[zaxis] - c << 
811          {                                     << 
812             areacode |= (sAxis1 & (sAxisZ | sA    810             areacode |= (sAxis1 & (sAxisZ | sAxisMax));
813                                                   811 
814             if   ((areacode & sBoundary) != 0) << 812             if   (areacode & sBoundary) areacode |= sCorner;  // xx is on the corner.
815             else                        areaco    813             else                        areacode |= sBoundary; 
816             if (xx.z() >= fAxisMax[zaxis] + ct    814             if (xx.z() >= fAxisMax[zaxis] + ctol) isoutside = true;
817          }                                        815          }
818                                                   816 
819          // if isoutside = true, clear inside     817          // if isoutside = true, clear inside bit.             
820          // if not on boundary, add axis infor    818          // if not on boundary, add axis information.             
821                                                   819          
822          if (isoutside)                        << 820          if (isoutside) {
823          {                                     << 
824             G4int tmpareacode = areacode & (~s    821             G4int tmpareacode = areacode & (~sInside);
825             areacode = tmpareacode;               822             areacode = tmpareacode;
826          }                                     << 823          } else if ((areacode & sBoundary) != sBoundary) {
827          else if ((areacode & sBoundary) != sB << 
828          {                                     << 
829             areacode |= (sAxis0 & sAxisY) | (s    824             areacode |= (sAxis0 & sAxisY) | (sAxis1 & sAxisZ);
830          }                                        825          }           
831                                                   826          
832       }                                        << 827       } else {
833       else                                     << 828 
834       {                                        << 
835          // boundary of y-axis                    829          // boundary of y-axis
836                                                   830 
837          if (yprime < fYAxisMin )              << 831          if (yprime < fYAxisMin ) {
838          {                                     << 
839             areacode |= (sAxis0 & (sAxisY | sA    832             areacode |= (sAxis0 & (sAxisY | sAxisMin)) | sBoundary;
840          }                                     << 833          } else if (yprime > fYAxisMax) {
841          else if (yprime > fYAxisMax)          << 
842          {                                     << 
843             areacode |= (sAxis0 & (sAxisY | sA    834             areacode |= (sAxis0 & (sAxisY | sAxisMax)) | sBoundary;
844          }                                        835          }
845                                                   836          
846          // boundary of z-axis                    837          // boundary of z-axis
847                                                   838 
848          if (xx.z() < fAxisMin[zaxis])         << 839          if (xx.z() < fAxisMin[zaxis]) {
849          {                                     << 
850             areacode |= (sAxis1 & (sAxisZ | sA    840             areacode |= (sAxis1 & (sAxisZ | sAxisMin));
851             if   ((areacode & sBoundary) != 0) << 841             if   (areacode & sBoundary) areacode |= sCorner;  // xx is on the corner.
852             else                        areaco    842             else                        areacode |= sBoundary; 
853                                                   843            
854          }                                     << 844          } else if (xx.z() > fAxisMax[zaxis]) {
855          else if (xx.z() > fAxisMax[zaxis])    << 
856          {                                     << 
857             areacode |= (sAxis1 & (sAxisZ | sA    845             areacode |= (sAxis1 & (sAxisZ | sAxisMax)) ;
858             if   ((areacode & sBoundary) != 0) << 846             if   (areacode & sBoundary) areacode |= sCorner;  // xx is on the corner.
859             else                        areaco    847             else                        areacode |= sBoundary; 
860          }                                        848          }
861                                                   849 
862          if ((areacode & sBoundary) != sBounda << 850          if ((areacode & sBoundary) != sBoundary) {
863          {                                     << 
864             areacode |= (sAxis0 & sAxisY) | (s    851             areacode |= (sAxis0 & sAxisY) | (sAxis1 & sAxisZ);
865          }                                        852          }           
866       }                                           853       }
867       return areacode;                            854       return areacode;
868    }                                           << 855    } else {
869    else                                        << 
870    {                                           << 
871       G4Exception("G4TwistBoxSide::GetAreaCode    856       G4Exception("G4TwistBoxSide::GetAreaCode()",
872                   "GeomSolids0001", FatalExcep << 857                   "NotImplemented", FatalException,
873                   "Feature NOT implemented !")    858                   "Feature NOT implemented !");
874    }                                              859    }
875    return areacode;                               860    return areacode;
876 }                                                 861 }
877                                                   862 
878 //============================================    863 //=====================================================================
879 //* SetCorners() -----------------------------    864 //* SetCorners() ------------------------------------------------------
880                                                   865 
881 void G4TwistBoxSide::SetCorners()                 866 void G4TwistBoxSide::SetCorners()
882 {                                                 867 {
883                                                   868 
884   // Set Corner points in local coodinate.        869   // Set Corner points in local coodinate.   
885                                                   870 
886   if (fAxis[0] == kYAxis && fAxis[1] == kZAxis << 871   if (fAxis[0] == kYAxis && fAxis[1] == kZAxis) {
887   {                                            << 872     
888     G4double x, y, z;                             873     G4double x, y, z;
889                                                   874 
890     // corner of Axis0min and Axis1min            875     // corner of Axis0min and Axis1min
891                                                   876 
892     x = -fdeltaX/2. + (fDx2 - fDy1*fTAlph)*std    877     x = -fdeltaX/2. + (fDx2 - fDy1*fTAlph)*std::cos(fPhiTwist/2.) - fDy1*std::sin(fPhiTwist/2.) ;
893     y = -fdeltaY/2. - fDy1*std::cos(fPhiTwist/    878     y = -fdeltaY/2. - fDy1*std::cos(fPhiTwist/2.) + (-fDx2 + fDy1*fTAlph)*std::sin(fPhiTwist/2.) ;
894     z = -fDz ;                                    879     z = -fDz ;
895                                                   880 
896     SetCorner(sC0Min1Min, x, y, z);               881     SetCorner(sC0Min1Min, x, y, z);
897                                                   882 
898     // corner of Axis0max and Axis1min            883     // corner of Axis0max and Axis1min
899                                                   884 
900     x = -fdeltaX/2. + (fDx2 + fDy1*fTAlph)*std    885     x = -fdeltaX/2. + (fDx2 + fDy1*fTAlph)*std::cos(fPhiTwist/2.) + fDy1*std::sin(fPhiTwist/2.) ;
901     y = -fdeltaY/2. + fDy1*std::cos(fPhiTwist/    886     y = -fdeltaY/2. + fDy1*std::cos(fPhiTwist/2.) - (fDx2 + fDy1*fTAlph)*std::sin(fPhiTwist/2.) ;
902     z = -fDz ;                                    887     z = -fDz ;
903                                                   888 
904     SetCorner(sC0Max1Min, x, y, z);               889     SetCorner(sC0Max1Min, x, y, z);
905                                                   890       
906     // corner of Axis0max and Axis1max            891     // corner of Axis0max and Axis1max
907                                                   892 
908     x = fdeltaX/2. + (fDx4 + fDy2*fTAlph)*std:    893     x = fdeltaX/2. + (fDx4 + fDy2*fTAlph)*std::cos(fPhiTwist/2.) - fDy2*std::sin(fPhiTwist/2.) ;
909     y = fdeltaY/2. + fDy2*std::cos(fPhiTwist/2    894     y = fdeltaY/2. + fDy2*std::cos(fPhiTwist/2.) + (fDx4 + fDy2*fTAlph)*std::sin(fPhiTwist/2.) ;
910     z = fDz ;                                     895     z = fDz ;
911                                                   896 
912     SetCorner(sC0Max1Max, x, y, z);               897     SetCorner(sC0Max1Max, x, y, z);
913                                                   898       
914     // corner of Axis0min and Axis1max            899     // corner of Axis0min and Axis1max
915                                                   900 
916     x = fdeltaX/2. + (fDx4 - fDy2*fTAlph)*std:    901     x = fdeltaX/2. + (fDx4 - fDy2*fTAlph)*std::cos(fPhiTwist/2.) + fDy2*std::sin(fPhiTwist/2.) ;
917     y = fdeltaY/2. - fDy2*std::cos(fPhiTwist/2    902     y = fdeltaY/2. - fDy2*std::cos(fPhiTwist/2.) + (fDx4 - fDy2*fTAlph)*std::sin(fPhiTwist/2.) ;
918     z = fDz ;                                     903     z = fDz ;
919                                                   904 
920     SetCorner(sC0Min1Max, x, y, z);               905     SetCorner(sC0Min1Max, x, y, z);
921                                                   906 
922   }                                            << 907   } else {
923   else                                         << 908 
924   {                                            << 
925     G4Exception("G4TwistBoxSide::SetCorners()"    909     G4Exception("G4TwistBoxSide::SetCorners()",
926                 "GeomSolids0001", FatalExcepti << 910                 "NotImplemented", FatalException,
927                 "Method NOT implemented !");      911                 "Method NOT implemented !");
928   }                                               912   }
929 }                                                 913 }
930                                                   914 
931 //============================================    915 //=====================================================================
932 //* SetBoundaries() --------------------------    916 //* SetBoundaries() ---------------------------------------------------
933                                                   917 
934 void G4TwistBoxSide::SetBoundaries()              918 void G4TwistBoxSide::SetBoundaries()
935 {                                                 919 {
936    // Set direction-unit vector of boundary-li << 920    // Set direction-unit vector of boundary-lines in local coodinate. 
                                                   >> 921    //   
937                                                   922 
938   G4ThreeVector direction;                        923   G4ThreeVector direction;
939                                                   924    
940   if (fAxis[0] == kYAxis && fAxis[1] == kZAxis << 925   if (fAxis[0] == kYAxis && fAxis[1] == kZAxis) {
941   {                                            << 926       
942     // sAxis0 & sAxisMin                          927     // sAxis0 & sAxisMin
943     direction = GetCorner(sC0Min1Max) - GetCor    928     direction = GetCorner(sC0Min1Max) - GetCorner(sC0Min1Min);
944     direction = direction.unit();                 929     direction = direction.unit();
945     SetBoundary(sAxis0 & (sAxisY | sAxisMin),     930     SetBoundary(sAxis0 & (sAxisY | sAxisMin), direction, 
946                 GetCorner(sC0Min1Min), sAxisZ)    931                 GetCorner(sC0Min1Min), sAxisZ) ;
947                                                   932       
948       // sAxis0 & sAxisMax                        933       // sAxis0 & sAxisMax
949     direction = GetCorner(sC0Max1Max) - GetCor    934     direction = GetCorner(sC0Max1Max) - GetCorner(sC0Max1Min);
950     direction = direction.unit();                 935     direction = direction.unit();
951     SetBoundary(sAxis0 & (sAxisY | sAxisMax),     936     SetBoundary(sAxis0 & (sAxisY | sAxisMax), direction, 
952                 GetCorner(sC0Max1Min), sAxisZ)    937                 GetCorner(sC0Max1Min), sAxisZ);
953                                                   938     
954     // sAxis1 & sAxisMin                          939     // sAxis1 & sAxisMin
955     direction = GetCorner(sC0Max1Min) - GetCor    940     direction = GetCorner(sC0Max1Min) - GetCorner(sC0Min1Min);
956     direction = direction.unit();                 941     direction = direction.unit();
957     SetBoundary(sAxis1 & (sAxisZ | sAxisMin),     942     SetBoundary(sAxis1 & (sAxisZ | sAxisMin), direction, 
958                 GetCorner(sC0Min1Min), sAxisY)    943                 GetCorner(sC0Min1Min), sAxisY);
959                                                   944     
960     // sAxis1 & sAxisMax                          945     // sAxis1 & sAxisMax
961     direction = GetCorner(sC0Max1Max) - GetCor    946     direction = GetCorner(sC0Max1Max) - GetCorner(sC0Min1Max);
962     direction = direction.unit();                 947     direction = direction.unit();
963     SetBoundary(sAxis1 & (sAxisZ | sAxisMax),     948     SetBoundary(sAxis1 & (sAxisZ | sAxisMax), direction, 
964                 GetCorner(sC0Min1Max), sAxisY)    949                 GetCorner(sC0Min1Max), sAxisY);
965                                                   950     
966   }                                            << 951   } else {
967   else                                         << 952     
968   {                                            << 953   G4Exception("G4TwistBoxSide::SetCorners()",
969     G4Exception("G4TwistBoxSide::SetCorners()" << 954               "NotImplemented", FatalException,
970                 "GeomSolids0001", FatalExcepti << 955               "Feature NOT implemented !");
971                 "Feature NOT implemented !");  << 
972   }                                               956   }
973 }                                                 957 }
974                                                   958 
975                                                   959 
976 void G4TwistBoxSide::GetPhiUAtX( const G4Three << 960 void G4TwistBoxSide::GetPhiUAtX( G4ThreeVector p, G4double &phi, G4double &u) 
977 {                                                 961 {
978   // find closest point XX on surface for a gi    962   // find closest point XX on surface for a given point p
979   // X0 is a point on the surface,  d is the d << 963   // 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                                                   964   
982   // phi is given by the z coordinate of p        965   // phi is given by the z coordinate of p
983                                                   966 
984   phi = p.z()/(2*fDz)*fPhiTwist ;                 967   phi = p.z()/(2*fDz)*fPhiTwist ;
985                                                   968 
986   u =  -(fTAlph*(fDx4plus2*fPhiTwist + 2*fDx4m << 969   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 << 970 
988          - fPhiTwist*(fTAlph*p.x() + p.y()))*  << 971 
989          + 2*(-(fdeltaX*phi) + fdeltaY*fTAlph* << 
990          - fTAlph*p.y()))*std::sin(phi))/(2.*( << 
991          + fPhiTwist*fTAlph*fTAlph)) ;         << 
992 }                                                 972 }
993                                                   973 
994                                                   974 
995 G4ThreeVector G4TwistBoxSide::ProjectPoint(con << 975 G4ThreeVector G4TwistBoxSide::ProjectPoint(const G4ThreeVector &p, 
996                                                << 976                                                     G4bool isglobal) 
997 {                                                 977 {
998   // Get Rho at p.z() on Hyperbolic Surface.      978   // Get Rho at p.z() on Hyperbolic Surface.
999   G4ThreeVector tmpp;                             979   G4ThreeVector tmpp;
1000   if (isglobal)                               << 980   if (isglobal) {
1001   {                                           << 
1002      tmpp = fRot.inverse()*p - fTrans;           981      tmpp = fRot.inverse()*p - fTrans;
1003   }                                           << 982   } else {
1004   else                                        << 
1005   {                                           << 
1006      tmpp = p;                                   983      tmpp = p;
1007   }                                              984   }
1008                                                  985 
1009   G4double phi ;                                 986   G4double phi ;
1010   G4double u ;                                   987   G4double u ;
1011                                                  988 
1012   GetPhiUAtX( tmpp, phi, u ) ;                << 989   GetPhiUAtX( tmpp, phi, u ) ;  // calculate (phi, u) for a point p close the surface
1013     // calculate (phi, u) for a point p close << 
1014                                                  990   
1015   G4ThreeVector xx = SurfacePoint(phi,u) ;    << 991   G4ThreeVector xx = SurfacePoint(phi,u) ;  // transform back to cartesian coordinates
1016     // transform back to cartesian coordinate << 
1017                                                  992 
1018   if (isglobal)                               << 993   if (isglobal) {
1019   {                                           << 
1020      return (fRot * xx + fTrans);                994      return (fRot * xx + fTrans);
1021   }                                           << 995   } else {
1022   else                                        << 
1023   {                                           << 
1024      return xx;                                  996      return xx;
1025   }                                              997   }
1026 }                                                998 }
1027                                                  999 
1028 void G4TwistBoxSide::GetFacets( G4int k, G4in << 1000 void G4TwistBoxSide::GetFacets( G4int m, G4int n,  G4double xyz[][3], G4int faces[][4], G4int iside ) 
1029                                 G4int faces[] << 
1030 {                                                1001 {
                                                   >> 1002 
1031   G4double phi ;                                 1003   G4double phi ;
1032   G4double b ;                                   1004   G4double b ;   
1033                                                  1005 
1034   G4double z, u ;     // the two parameters f    1006   G4double z, u ;     // the two parameters for the surface equation
1035   G4ThreeVector p ;  // a point on the surfac    1007   G4ThreeVector p ;  // a point on the surface, given by (z,u)
1036                                                  1008 
1037   G4int nnode ;                                  1009   G4int nnode ;
1038   G4int nface ;                                  1010   G4int nface ;
1039                                                  1011 
1040   // calculate the (n-1)*(k-1) vertices       << 1012   // calculate the (n-1)*(m-1) vertices
1041                                                  1013 
1042   G4int i,j ;                                    1014   G4int i,j ;
1043                                                  1015 
1044   for ( i = 0 ; i<n ; ++i )                   << 1016   for ( i = 0 ; i<n ; i++ ) {
1045   {                                           << 1017 
1046     z = -fDz+i*(2.*fDz)/(n-1) ;                  1018     z = -fDz+i*(2.*fDz)/(n-1) ;
1047     phi = z*fPhiTwist/(2*fDz) ;                  1019     phi = z*fPhiTwist/(2*fDz) ;
1048     b = GetValueB(phi) ;                         1020     b = GetValueB(phi) ;
1049                                                  1021 
1050     for ( j = 0 ; j<k ; ++j )                 << 1022     for ( j = 0 ; j<m ; j++ ) {
1051     {                                         << 1023 
1052       nnode = GetNode(i,j,k,n,iside) ;        << 1024       nnode = GetNode(i,j,m,n,iside) ;
1053       u = -b/2 +j*b/(k-1) ;                   << 1025       u = -b/2 +j*b/(m-1) ;
1054       p = SurfacePoint(phi,u,true) ;          << 1026       p = SurfacePoint(phi,u,true) ;  // surface point in global coordinate system
1055        // surface point in global coordinate  << 
1056                                                  1027 
1057       xyz[nnode][0] = p.x() ;                    1028       xyz[nnode][0] = p.x() ;
1058       xyz[nnode][1] = p.y() ;                    1029       xyz[nnode][1] = p.y() ;
1059       xyz[nnode][2] = p.z() ;                    1030       xyz[nnode][2] = p.z() ;
1060                                                  1031 
1061       if ( i<n-1 && j<k-1 )     // contercloc << 1032       if ( i<n-1 && j<m-1 ) {   // conterclock wise filling
1062       {                                       << 1033         
1063         nface = GetFace(i,j,k,n,iside) ;      << 1034         nface = GetFace(i,j,m,n,iside) ;
1064         faces[nface][0] = GetEdgeVisibility(i << 1035         faces[nface][0] = GetEdgeVisibility(i,j,m,n,0,-1) * (GetNode(i  ,j  ,m,n,iside)+1) ;  // fortran numbering
1065         faces[nface][1] = GetEdgeVisibility(i << 1036         faces[nface][1] = GetEdgeVisibility(i,j,m,n,1,-1) * (GetNode(i  ,j+1,m,n,iside)+1) ;
1066         faces[nface][2] = GetEdgeVisibility(i << 1037         faces[nface][2] = GetEdgeVisibility(i,j,m,n,2,-1) * (GetNode(i+1,j+1,m,n,iside)+1) ;
1067         faces[nface][3] = GetEdgeVisibility(i << 1038         faces[nface][3] = GetEdgeVisibility(i,j,m,n,3,-1) * (GetNode(i+1,j  ,m,n,iside)+1) ;
                                                   >> 1039 
1068       }                                          1040       }
1069     }                                            1041     }
1070   }                                              1042   }
1071 }                                                1043 }
1072                                                  1044