G4ParameterisationTrdX Class Reference

G4ParameterisationTrdX represents the parameterised positioning equivalent to dividing a G4Trd along X axis. More...

#include <G4ParameterisationTrd.hh>

Inheritance diagram for G4ParameterisationTrdX:

Public Member Functions
	G4ParameterisationTrdX (EAxis axis, G4int nCopies, G4double width, G4double offset, G4VSolid *pSolid, DivisionType divType)
	~G4ParameterisationTrdX () override
G4double	GetMaxParameter () const override
void	ComputeTransformation (const G4int copyNo, G4VPhysicalVolume *physVol) const override
void	ComputeDimensions (G4Trd &trd, const G4int copyNo, const G4VPhysicalVolume *pv) const override
void	ComputeDimensions (G4Trap &trd, const G4int copyNo, const G4VPhysicalVolume *pv) const override
Public Member Functions inherited from G4VParameterisationTrd
	G4VParameterisationTrd (EAxis axis, G4int nCopies, G4double offset, G4double step, G4VSolid *pSolid, DivisionType divType)
	~G4VParameterisationTrd () override
Public Member Functions inherited from G4VDivisionParameterisation
	G4VDivisionParameterisation (EAxis axis, G4int nDiv, G4double width, G4double offset, DivisionType divType, G4VSolid *motherSolid=nullptr)
	~G4VDivisionParameterisation () override
G4VSolid *	ComputeSolid (const G4int, G4VPhysicalVolume *pv) override
const G4String &	GetType () const
EAxis	GetAxis () const
G4int	GetNoDiv () const
G4double	GetWidth () const
G4double	GetOffset () const
G4VSolid *	GetMotherSolid () const
void	SetType (const G4String &type)
void	SetHalfGap (G4double hg)
G4double	GetHalfGap () const
Public Member Functions inherited from G4VPVParameterisation
	G4VPVParameterisation ()=default
virtual	~G4VPVParameterisation ()=default
virtual G4Material *	ComputeMaterial (const G4int repNo, G4VPhysicalVolume *currentVol, const G4VTouchable *parentTouch=nullptr)
virtual G4bool	IsNested () const
virtual G4VVolumeMaterialScanner *	GetMaterialScanner ()

Additional Inherited Members
Protected Member Functions inherited from G4VDivisionParameterisation
void	ChangeRotMatrix (G4VPhysicalVolume *physVol, G4double rotZ=0.0) const
G4int	CalculateNDiv (G4double motherDim, G4double width, G4double offset) const
G4double	CalculateWidth (G4double motherDim, G4int nDiv, G4double offset) const
virtual void	CheckParametersValidity ()
void	CheckOffset (G4double maxPar)
void	CheckNDivAndWidth (G4double maxPar)
G4double	OffsetZ () const
Protected Attributes inherited from G4VParameterisationTrd
G4bool	bDivInTrap = false
Protected Attributes inherited from G4VDivisionParameterisation
G4String	ftype
EAxis	faxis
G4int	fnDiv = 0
G4double	fwidth = 0.0
G4double	foffset = 0.0
DivisionType	fDivisionType
G4VSolid *	fmotherSolid = nullptr
G4bool	fReflectedSolid = false
G4bool	fDeleteSolid = false
G4double	kCarTolerance
G4double	fhgap = 0.0
Static Protected Attributes inherited from G4VDivisionParameterisation
static G4ThreadLocal G4RotationMatrix *	fRot = nullptr
static const G4int	verbose = 5

Detailed Description

G4ParameterisationTrdX represents the parameterised positioning equivalent to dividing a G4Trd along X axis.

Definition at line 98 of file G4ParameterisationTrd.hh.

Constructor & Destructor Documentation

G4ParameterisationTrdX()

G4ParameterisationTrdX::G4ParameterisationTrdX	(	EAxis	axis,
		G4int	nCopies,
		G4double	width,
		G4double	offset,
		G4VSolid *	pSolid,
		DivisionType	divType )

Initialises a parameterised Trd along X axis.

Parameters

[in]	axis	The axis along which apply the parameterisation.
[in]	nCopies	The total number of divided copies.
[in]	offset	Potential initial offset along the axis.
[in]	step	The width of the divided entity.
[in]	pSolid	Pointer to the original shape to parameterise.
[in]	divType	String identifier for the kind of division.

Definition at line 76 of file G4ParameterisationTrd.cc.

  :  G4VParameterisationTrd( axis, nDiv, width, offset, msolid, divType )
{
  CheckParametersValidity();
  SetType( "DivisionTrdX" );
 
  auto msol = (G4Trd*)(fmotherSolid);
  if( divType == DivWIDTH )
  {
    fnDiv = CalculateNDiv( msol->GetXHalfLength1()+msol->GetXHalfLength2(),
                           width, offset );
  }
  else if( divType == DivNDIV )
  {
    fwidth = CalculateWidth( msol->GetXHalfLength1()+msol->GetXHalfLength2(),
                             nDiv, offset );
  }
 
#ifdef G4DIVDEBUG
  if( verbose >= 1 )
  {
    G4cout << " G4ParameterisationTrdX - ## divisions " << fnDiv << " = "
           << nDiv << G4endl
           << " Offset " << foffset << " = " << offset << G4endl
           << " Width " << fwidth << " = " << width << G4endl;
  }
#endif
 
  G4double mpDx1 = msol->GetXHalfLength1();
  G4double mpDx2 = msol->GetXHalfLength2();
  if( std::fabs(mpDx1 - mpDx2) > kCarTolerance )
  {
    bDivInTrap = true;
  }
}

~G4ParameterisationTrdX()

G4ParameterisationTrdX::~G4ParameterisationTrdX ( )

overridedefault

Default Destructor.

Member Function Documentation

ComputeDimensions() [1/2]

void G4ParameterisationTrdX::ComputeDimensions ( G4Trap & trd, const G4int copyNo, const G4VPhysicalVolume * pv ) const

overridevirtual

Reimplemented from G4VPVParameterisation.

Definition at line 189 of file G4ParameterisationTrd.cc.

{
  auto msol = (G4Trd*)(fmotherSolid); 
  G4double pDy1 = msol->GetYHalfLength1();
  G4double pDy2 = msol->GetYHalfLength2();
  G4double pDz = msol->GetZHalfLength();
  //fwidth is at Z=0
  G4double pDx1 = msol->GetXHalfLength1(); 
  G4double pDx2 = msol->GetXHalfLength2();
  //  G4double pDxAVE = (pDx1+pDx2)/2.;
  G4double xChangeRatio = (pDx2-pDx1) / (pDx2+pDx1);
  G4double fWidChange = xChangeRatio*fwidth;
  G4double fWid1 = fwidth - fWidChange;
  G4double fWid2 = fwidth + fWidChange;
  G4double fOffsetChange = xChangeRatio*foffset/2.;
  G4double fOffset1 = foffset - fOffsetChange;
  G4double fOffset2 = foffset + fOffsetChange;
  G4double cxy1 = -pDx1+fOffset1 + (copyNo+0.5)*fWid1;// centre of the side at y=-pDy1
  G4double cxy2 = -pDx2+fOffset2 + (copyNo+0.5)*fWid2;// centre of the side at y=+pDy1
  G4double alp = std::atan( (cxy2-cxy1)/(pDz*2.) );
 
  pDx1 = fwidth/2. - fWidChange/2.;
  pDx2 = fwidth/2. + fWidChange/2.;
 
 
  trap.SetAllParameters ( pDz,
              alp,
              0.,
              pDy1,
              pDx1,
              pDx1,
              0.,
              pDy2,
              pDx2 - fhgap,
              pDx2 - fhgap * pDx2/pDx1,
              0.);
 
#ifdef G4DIVDEBUG
  if( verbose >= 2 )
  {
    G4cout << " G4ParameterisationTrdX::ComputeDimensions():"
           << copyNo << G4endl;
    trap.DumpInfo();
  }
#endif
}

ComputeDimensions() [2/2]

void G4ParameterisationTrdX::ComputeDimensions ( G4Trd & trd, const G4int copyNo, const G4VPhysicalVolume * pv ) const

overridevirtual

Reimplemented from G4VPVParameterisation.

Definition at line 166 of file G4ParameterisationTrd.cc.

{  
  auto msol = (G4Trd*)(fmotherSolid);
  G4double pDy1 = msol->GetYHalfLength1();
  G4double pDy2 = msol->GetYHalfLength2();
  G4double pDz = msol->GetZHalfLength();
  G4double pDx = fwidth/2. - fhgap;
 
  trd.SetAllParameters ( pDx, pDx, pDy1, pDy2, pDz );
 
#ifdef G4DIVDEBUG
  if( verbose >= 2 )
  {
    G4cout << " G4ParameterisationTrdX::ComputeDimensions():"
           << copyNo << G4endl;
    trd.DumpInfo();
  }
#endif
}

ComputeTransformation()

void G4ParameterisationTrdX::ComputeTransformation ( const G4int copyNo, G4VPhysicalVolume * physVol ) const

overridevirtual

Concrete methods implementing the parameterisation.

Implements G4VDivisionParameterisation.

Definition at line 128 of file G4ParameterisationTrd.cc.

{
  auto msol = (G4Trd*)(fmotherSolid );
  G4double mdx = ( msol->GetXHalfLength1() + msol->GetXHalfLength2() ) / 2.;
  //----- translation 
  G4ThreeVector origin(0.,0.,0.); 
  G4double posi;
  posi = -mdx + foffset + (copyNo+0.5)*fwidth;
  if( faxis == kXAxis )
  {
    origin.setX( posi ); 
  }
  else
  { 
    std::ostringstream message;
    message << "Only axes along X are allowed !  Axis: " << faxis;
    G4Exception("G4ParameterisationTrdX::ComputeTransformation()",
                "GeomDiv0002", FatalException, message);
  }
 
#ifdef G4DIVDEBUG
  if( verbose >= 2 )
  {
    G4cout << std::setprecision(8)
           << " G4ParameterisationTrdX::ComputeTransformation() "
           << copyNo << G4endl
           << " Position: " << origin << " - Axis: " << faxis << G4endl;
  }
#endif
 
   //----- set translation 
  physVol->SetTranslation( origin );
}

GetMaxParameter()

G4double G4ParameterisationTrdX::GetMaxParameter ( ) const

overridevirtual

Returns the max width along X.

Returns

The maximum width of the solid to divide along the X axis.

Implements G4VDivisionParameterisation.

Definition at line 120 of file G4ParameterisationTrd.cc.

{
  auto msol = (G4Trd*)(fmotherSolid);
  return (msol->GetXHalfLength1()+msol->GetXHalfLength2());
}

---

The documentation for this class was generated from the following files:

• G4ParameterisationTrd.hh
• G4ParameterisationTrd.cc