G4IntersectingCone Class Reference

G4IntersectingCone is a utility class used to calculate the intersection of an arbitrary line with a fixed cone. More...

#include <G4IntersectingCone.hh>

Public Member Functions
	G4IntersectingCone (const G4double r[2], const G4double z[2])
	~G4IntersectingCone ()=default
G4int	LineHitsCone (const G4ThreeVector &p, const G4ThreeVector &v, G4double *s1, G4double *s2)
G4bool	HitOn (const G4double r, const G4double z)
G4double	RLo () const
G4double	RHi () const
G4double	ZLo () const
G4double	ZHi () const
	G4IntersectingCone (__void__ &)

Detailed Description

G4IntersectingCone is a utility class used to calculate the intersection of an arbitrary line with a fixed cone.

Definition at line 47 of file G4IntersectingCone.hh.

Constructor & Destructor Documentation

G4IntersectingCone() [1/2]

G4IntersectingCone::G4IntersectingCone	(	const G4double	r[2],
		const G4double	z[2] )

Constructor given r,z values.

Parameters

[in]	r	r values.
[in]	z	Z values.

Definition at line 37 of file G4IntersectingCone.cc.

{
  const G4double halfCarTolerance
    = 0.5 * G4GeometryTolerance::GetInstance()->GetSurfaceTolerance();
 
  // What type of cone are we?
  //
  type1 = (std::abs(z[1]-z[0]) > std::abs(r[1]-r[0]));
 
  if (type1) // tube like
  {
    B = (r[1] - r[0]) / (z[1] - z[0]);
    A = (r[0]*z[1] - r[1]*z[0]) / (z[1] -z[0]);
  }
  else // disk like
  {
    B = (z[1] - z[0]) / (r[1] - r[0]);
    A = (z[0]*r[1] - z[1]*r[0]) / (r[1] - r[0]);
  }
 
  // Calculate extent
  //
  rLo = std::min(r[0], r[1]) - halfCarTolerance;
  rHi = std::max(r[0], r[1]) + halfCarTolerance;
  zLo = std::min(z[0], z[1]) - halfCarTolerance;
  zHi = std::max(z[0], z[1]) + halfCarTolerance;
}

~G4IntersectingCone()

G4IntersectingCone::~G4IntersectingCone ( )

default

Default Destructor.

G4IntersectingCone() [2/2]

G4IntersectingCone::G4IntersectingCone

(

__void__ &

)

Fake default constructor for usage restricted to direct object persistency for clients requiring preallocation of memory for persistifiable objects.

Definition at line 69 of file G4IntersectingCone.cc.

  : zLo(0.), zHi(0.), rLo(0.), rHi(0.), A(0.), B(0.)
{
}

Member Function Documentation

HitOn()

G4bool G4IntersectingCone::HitOn	(	const G4double	r,
		const G4double	z )

Checks r or z extent, as appropriate, to see if the point is possibly on the cone.

Definition at line 79 of file G4IntersectingCone.cc.

{
  //
  // Be careful! The inequalities cannot be "<=" and ">=" here without
  // punching a tiny hole in our shape!
  //
  if (type1)
  {
    if (z < zLo || z > zHi) { return false; }
  }
  else
  {
    if (r < rLo || r > rHi) { return false; }
  }
 
  return true;
}

LineHitsCone()

G4int G4IntersectingCone::LineHitsCone	(	const G4ThreeVector &	p,
		const G4ThreeVector &	v,
		G4double *	s1,
		G4double *	s2 )

Calculates the intersection of a line with the conical surface, ignoring any Phi division.

Definition at line 103 of file G4IntersectingCone.cc.

{
  if (type1)
  {
    return LineHitsCone1( p, v, s1, s2 );
  }
  return LineHitsCone2( p, v, s1, s2 );
}

RHi()

G4double G4IntersectingCone::RHi ( ) const

inline

Definition at line 80 of file G4IntersectingCone.hh.

{ return rHi; }

RLo()

G4double G4IntersectingCone::RLo ( ) const

inline

Accessors for R and Z bounds of side.

Definition at line 79 of file G4IntersectingCone.hh.

{ return rLo; }

ZHi()

G4double G4IntersectingCone::ZHi ( ) const

inline

Definition at line 82 of file G4IntersectingCone.hh.

{ return zHi; }

ZLo()

G4double G4IntersectingCone::ZLo ( ) const

inline

Definition at line 81 of file G4IntersectingCone.hh.

{ return zLo; }

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

• G4IntersectingCone.hh
• G4IntersectingCone.cc