geant4/source/geometry/solids/CSG/include/G4Cons.icc

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// $Id$
//
// --------------------------------------------------------------------
// GEANT 4 inline definitions file
//
// G4Cons.icc
//
// Implementation of inline methods of G4Cons
// --------------------------------------------------------------------

inline
G4double G4Cons::GetInnerRadiusMinusZ() const
{
  return fRmin1 ;
}

inline
G4double G4Cons::GetOuterRadiusMinusZ() const
{
  return fRmax1 ;
}

inline
G4double G4Cons::GetInnerRadiusPlusZ() const
{
  return fRmin2 ;
}

inline
G4double G4Cons::GetOuterRadiusPlusZ() const
{
  return fRmax2 ;
}

inline
G4double G4Cons::GetZHalfLength() const
{
  return fDz ;
}

inline  
G4double G4Cons::GetStartPhiAngle() const
{
  return fSPhi ;
}

inline
G4double G4Cons::GetDeltaPhiAngle() const
{
  return fDPhi;
}

inline
void G4Cons::Initialize()
{
  fCubicVolume = 0.;
  fSurfaceArea = 0.;
  fpPolyhedron = 0;
}

inline 
void G4Cons::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);
  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 G4Cons::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 G4Cons::CheckDPhiAngle(G4double dPhi)
{
  fPhiFullCone = true;
  if ( dPhi >= CLHEP::twopi-kAngTolerance*0.5 )
  {
    fDPhi=CLHEP::twopi;
    fSPhi=0;
  }
  else
  {
    fPhiFullCone = false;
    if ( dPhi > 0 )
    {
      fDPhi = dPhi;
    }
    else
    {
      std::ostringstream message;
      message << "Invalid dphi." << G4endl
              << "Negative or zero delta-Phi (" << dPhi << ") in solid: "
              << GetName();
      G4Exception("G4Cons::CheckDPhiAngle()", "GeomSolids0002",
                  FatalException, message);
    }
  }
}

inline void G4Cons::CheckPhiAngles(G4double sPhi, G4double dPhi)
{
  CheckDPhiAngle(dPhi);
  if ( (fDPhi<CLHEP::twopi) && (sPhi) ) { CheckSPhiAngle(sPhi); }
  InitializeTrigonometry();
}

inline
void G4Cons::SetInnerRadiusMinusZ( G4double Rmin1 )
{
  fRmin1= Rmin1 ;
  Initialize();
}

inline
void G4Cons::SetOuterRadiusMinusZ( G4double Rmax1 )
{
  fRmax1= Rmax1 ;
  Initialize();
}

inline
void G4Cons::SetInnerRadiusPlusZ ( G4double Rmin2 )
{
  fRmin2= Rmin2 ;
  Initialize();
}

inline
void G4Cons::SetOuterRadiusPlusZ ( G4double Rmax2 )
{
  fRmax2= Rmax2 ;
  Initialize();
}

inline
void G4Cons::SetZHalfLength ( G4double newDz )
{
  fDz= newDz ;
  Initialize();
}

inline
void G4Cons::SetStartPhiAngle ( G4double newSPhi, G4bool compute )
{
  // Flag 'compute' can be used to explicitely avoid recomputation of
  // trigonometry in case SetDeltaPhiAngle() is invoked afterwards

  CheckSPhiAngle(newSPhi);
  fPhiFullCone = false;
  if (compute)  { InitializeTrigonometry(); }
  Initialize();
}

void G4Cons::SetDeltaPhiAngle ( G4double newDPhi )
{
  CheckPhiAngles(fSPhi, newDPhi);
  Initialize();
}

// Old access methods ...

inline
G4double G4Cons::GetRmin1() const
{
  return GetInnerRadiusMinusZ();
}

inline
G4double G4Cons::GetRmax1() const
{
  return GetOuterRadiusMinusZ();
}

inline
G4double G4Cons::GetRmin2() const
{
  return GetInnerRadiusPlusZ();
}

inline
G4double G4Cons::GetRmax2() const
{
  return GetOuterRadiusPlusZ();
}

inline  
G4double G4Cons::GetDz() const
{
  return GetZHalfLength();
}

inline
G4double G4Cons::GetSPhi() const
{
  return GetStartPhiAngle();
}

inline
G4double G4Cons::GetDPhi() const
{
  return GetDeltaPhiAngle();
}

inline
G4double G4Cons::GetCubicVolume()
{
  if(fCubicVolume != 0.) {;}
  else   
  {
    G4double Rmean, rMean, deltaR, deltar;

    Rmean  = 0.5*(fRmax1+fRmax2);
    deltaR = fRmax1-fRmax2;

    rMean  = 0.5*(fRmin1+fRmin2);
    deltar = fRmin1-fRmin2;
    fCubicVolume = fDPhi*fDz*(Rmean*Rmean-rMean*rMean
                            +(deltaR*deltaR-deltar*deltar)/12); 
  }
  return fCubicVolume;
}

inline
G4double G4Cons::GetSurfaceArea()
{
  if(fSurfaceArea != 0.) {;}
  else   
  {
    G4double mmin, mmax, dmin, dmax;

    mmin= (fRmin1+fRmin2)*0.5;
    mmax= (fRmax1+fRmax2)*0.5;
    dmin= (fRmin2-fRmin1);
    dmax= (fRmax2-fRmax1);
    
    fSurfaceArea = fDPhi*( mmin * std::sqrt(dmin*dmin+4*fDz*fDz)
                         + mmax * std::sqrt(dmax*dmax+4*fDz*fDz)
                         + 0.5*(fRmax1*fRmax1-fRmin1*fRmin1
                               +fRmax2*fRmax2-fRmin2*fRmin2 ));
    if(!fPhiFullCone)
    {
      fSurfaceArea = fSurfaceArea+4*fDz*(mmax-mmin);
    }
  }
  return fSurfaceArea;
}