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Geant4/geometry/solids/CSG/include/G4Tubs.icc

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  //
  // Implementation of inline methods of G4Tubs
  // --------------------------------------------------------------------
  
  inline
  G4double G4Tubs::GetInnerRadius () const
  {
    return fRMin;
  }
  
  inline
  G4double G4Tubs::GetOuterRadius () const
  {
    return fRMax;
  }
  
  inline
  G4double G4Tubs::GetZHalfLength () const
  {
    return fDz;
  }
  
  inline
  G4double G4Tubs::GetStartPhiAngle () const
  {
    return fSPhi;
  }
  
  inline
  G4double G4Tubs::GetDeltaPhiAngle () const
  {
    return fDPhi;
  }
  
  inline
  G4double G4Tubs::GetSinStartPhi () const
  {
    return sinSPhi;
  }
  
  inline
  G4double G4Tubs::GetCosStartPhi () const
  {
    return cosSPhi;
  }
  
  inline
  G4double G4Tubs::GetSinEndPhi () const
  {
    return sinEPhi;
  }
  
  inline
  G4double G4Tubs::GetCosEndPhi () const
  {
    return cosEPhi;
  }
  
  inline
  void G4Tubs::Initialize()
  {
    fCubicVolume = 0.;
    fSurfaceArea = 0.;
    fInvRmax= 1.0 / fRMax;
    fInvRmin= fRMin > 0. ? 1.0 / fRMin : 0.0;
    fRebuildPolyhedron = true;
  }
  
  inline
  void G4Tubs::InitializeTrigonometry()
  {
    G4double hDPhi = 0.5*fDPhi;                       // half delta phi
    G4double cPhi  = fSPhi + hDPhi;
    G4double ePhi  = fSPhi + fDPhi;
  
   sinCPhi    = std::sin(cPhi);
   cosCPhi    = std::cos(cPhi);
   cosHDPhi   = std::cos(hDPhi);
   cosHDPhiIT = std::cos(hDPhi - 0.5*kAngTolerance); // inner/outer tol half dphi
   cosHDPhiOT = std::cos(hDPhi + 0.5*kAngTolerance);
   sinSPhi = std::sin(fSPhi);
   cosSPhi = std::cos(fSPhi);
   sinEPhi = std::sin(ePhi);
   cosEPhi = std::cos(ePhi);
 }
 
 inline void G4Tubs::CheckSPhiAngle(G4double sPhi)
 {
   // Ensure fSphi in 0-2PI or -2PI-0 range if shape crosses 0
 
   if ( sPhi < 0 )
   {
     fSPhi = CLHEP::twopi - std::fmod(std::fabs(sPhi),CLHEP::twopi);
   }
   else
   {
     fSPhi = std::fmod(sPhi,CLHEP::twopi) ;
   }
   if ( fSPhi+fDPhi > CLHEP::twopi )
   {
     fSPhi -= CLHEP::twopi ;
   }
 }
 
 inline void G4Tubs::CheckDPhiAngle(G4double dPhi)
 {
   fPhiFullTube = true;
   if ( dPhi >= CLHEP::twopi-kAngTolerance*0.5 )
   {
     fDPhi=CLHEP::twopi;
     fSPhi=0;
   }
   else
   {
     fPhiFullTube = false;
     if ( dPhi > 0 )
     {
       fDPhi = dPhi;
     }
     else
     {
       std::ostringstream message;
       message << "Invalid dphi." << G4endl
               << "Negative or zero delta-Phi (" << dPhi << "), for solid: "
               << GetName();
       G4Exception("G4Tubs::CheckDPhiAngle()", "GeomSolids0002",
                   FatalException, message);
     }
   }
 }
 
 inline void G4Tubs::CheckPhiAngles(G4double sPhi, G4double dPhi)
 {
   CheckDPhiAngle(dPhi);
   if ( (fDPhi<CLHEP::twopi) && ((sPhi) != 0.0) ) { CheckSPhiAngle(sPhi); }
   InitializeTrigonometry();
 }
 
 inline
 void G4Tubs::SetInnerRadius (G4double newRMin)
 {
   if ( newRMin < 0 ) // Check radii
   {
     std::ostringstream message;
     message << "Invalid radii." << G4endl
             << "Invalid values for radii in solid " << GetName() << G4endl
             << "        newRMin = " << newRMin
             << ", fRMax = " << fRMax << G4endl
             << "        Negative inner radius!";
     G4Exception("G4Tubs::SetInnerRadius()", "GeomSolids0002",
                 FatalException, message);
   }
   fRMin= newRMin;
   Initialize();
 }
 
 inline
 void G4Tubs::SetOuterRadius (G4double newRMax)
 {
   if ( newRMax <= 0 ) // Check radii
   {
     std::ostringstream message;
     message << "Invalid radii." << G4endl
             << "Invalid values for radii in solid " << GetName() << G4endl
             << "        fRMin = " << fRMin
             << ", newRMax = " << newRMax << G4endl
             << "        Invalid outer radius!";
     G4Exception("G4Tubs::SetOuterRadius()", "GeomSolids0002",
                 FatalException, message);
   }
   fRMax= newRMax;
   Initialize();
 }
 
 inline
 void G4Tubs::SetZHalfLength (G4double newDz)
 {
   if (newDz<=0) // Check z-len
   {
     std::ostringstream message;
     message << "Invalid Z half-length." << G4endl
             << "Negative Z half-length (" << newDz << "), for solid: "
             << GetName();
     G4Exception("G4Tubs::SetZHalfLength()", "GeomSolids0002",
                 FatalException, message);
   }
   fDz= newDz;
   Initialize();
 }
 
 inline
 void G4Tubs::SetStartPhiAngle (G4double newSPhi, G4bool compute)
 {
   // Flag 'compute' can be used to explicitely avoid recomputation of
   // trigonometry in case SetDeltaPhiAngle() is invoked afterwards
 
   CheckSPhiAngle(newSPhi);
   fPhiFullTube = false;
   if (compute)  { InitializeTrigonometry(); }
   Initialize();
 }
 
 inline
 void G4Tubs::SetDeltaPhiAngle (G4double newDPhi)
 {
   CheckPhiAngles(fSPhi, newDPhi);
   Initialize();
 }
 
 inline
 G4double G4Tubs::GetCubicVolume()
 {
   if(fCubicVolume != 0.) {;}
   else   { fCubicVolume = fDPhi*fDz*(fRMax*fRMax-fRMin*fRMin); }
   return fCubicVolume;
 }
 
 inline
 G4double G4Tubs::GetSurfaceArea()
 {
   if(fSurfaceArea != 0.) {;}
   else
   {
     fSurfaceArea = fDPhi*(fRMin+fRMax)*(2*fDz+fRMax-fRMin);
     if (!fPhiFullTube)
     {
       fSurfaceArea = fSurfaceArea + 4*fDz*(fRMax-fRMin);
     }
   }
   return fSurfaceArea;
 }
 
 inline
 G4double G4Tubs::FastInverseRxy( const G4ThreeVector& pos,
                                        G4double invRad,
                                        G4double tolerance ) const
 {
   G4double rho2 = sqr( pos.x() ) + sqr( pos.y() );
   G4bool onSurface = std::fabs( rho2 * invRad * invRad - 1.0 ) < tolerance;
   G4double invRho = onSurface ? invRad : 1.0 / std::sqrt(rho2);
   return invRho;
 }