G4EnclosingCylinder Class Reference

#include <G4EnclosingCylinder.hh>

Public Member Functions
	G4EnclosingCylinder (const G4ReduciblePolygon *rz, G4bool phiIsOpen, G4double startPhi, G4double totalPhi)
	~G4EnclosingCylinder ()
G4bool	MustBeOutside (const G4ThreeVector &p) const
G4bool	ShouldMiss (const G4ThreeVector &p, const G4ThreeVector &v) const
	G4EnclosingCylinder (__void__ &)
Protected Attributes
G4double	radius
G4double	zLo
G4double	zHi
G4bool	phiIsOpen
G4double	startPhi
G4double	totalPhi
G4double	rx1
G4double	ry1
G4double	dx1
G4double	dy1
G4double	rx2
G4double	ry2
G4double	dx2
G4double	dy2
G4bool	concave

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Detailed Description

Definition at line 53 of file G4EnclosingCylinder.hh.

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Constructor & Destructor Documentation

G4EnclosingCylinder::G4EnclosingCylinder	(	const G4ReduciblePolygon *	rz,
		G4bool	phiIsOpen,
		G4double	startPhi,
		G4double	totalPhi
	)

Definition at line 48 of file G4EnclosingCylinder.cc.

References G4ReduciblePolygon::Amax(), G4ReduciblePolygon::Bmax(), G4ReduciblePolygon::Bmin(), dx1, dx2, dy1, dy2, G4GeometryTolerance::GetInstance(), G4GeometryTolerance::GetSurfaceTolerance(), phiIsOpen, radius, rx1, rx2, ry1, ry2, startPhi, totalPhi, zHi, and zLo.

  : startPhi(theStartPhi), totalPhi(theTotalPhi),
    rx1(0.), ry1(0.), dx1(0.), dy1(0.),
    rx2(0.), ry2(0.), dx2(0.), dy2(0.),     
    concave(theTotalPhi > pi)
{
  //
  // Obtain largest r and smallest and largest z
  //
  radius = rz->Amax();
  zHi = rz->Bmax();
  zLo = rz->Bmin();

  G4double kCarTolerance = G4GeometryTolerance::GetInstance()
                           ->GetSurfaceTolerance();
  //
  // Save phi info
  //
  phiIsOpen = thePhiIsOpen;
  if ( phiIsOpen )
  {    
    rx1 = std::cos(startPhi);
    ry1 = std::sin(startPhi);
    dx1 = +ry1*10*kCarTolerance;
    dy1 = -rx1*10*kCarTolerance;
    
    rx2 = std::cos(startPhi+totalPhi);
    ry2 = std::sin(startPhi+totalPhi);
    dx2 = -ry2*10*kCarTolerance;
    dy2 = +rx2*10*kCarTolerance;
  }
  
  //
  // Add safety
  //
  radius += 10*kCarTolerance;
  zLo    -= 10*kCarTolerance;
  zHi    += 10*kCarTolerance;
}

G4EnclosingCylinder::~G4EnclosingCylinder

(

)

Definition at line 105 of file G4EnclosingCylinder.cc.

{
}

G4EnclosingCylinder::G4EnclosingCylinder

(

__void__ &

)

Definition at line 95 of file G4EnclosingCylinder.cc.

: radius(0.), zLo(0.), zHi(0.), phiIsOpen(0.), startPhi(0.), totalPhi(0.),
  rx1(0.), ry1(0.), dx1(0.), dy1(0.), rx2(0.), ry2(0.), dx2(0.), dy2(0.),
  concave(false)
{
}

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Member Function Documentation

G4bool G4EnclosingCylinder::MustBeOutside

(

const G4ThreeVector &

p

)

const

Definition at line 117 of file G4EnclosingCylinder.cc.

References concave, dx1, dx2, dy1, dy2, phiIsOpen, radius, rx1, rx2, ry1, ry2, zHi, and zLo.

Referenced by G4Polyhedra::Inside(), G4Polycone::Inside(), and ShouldMiss().

{
  if (p.perp() > radius) return true;
  if (p.z() < zLo) return true;
  if (p.z() > zHi) return true;

  if (phiIsOpen)
  {
    if (concave)
    {
      if ( ((p.x()-dx1)*ry1 - (p.y()-dy1)*rx1) < 0) return false;
      if ( ((p.x()-dx2)*ry2 - (p.y()-dy2)*rx2) > 0) return false;
    }
    else
    {
      if ( ((p.x()-dx1)*ry1 - (p.y()-dy1)*rx1) > 0) return true;
      if ( ((p.x()-dx2)*ry2 - (p.y()-dy2)*rx2) < 0) return true;
    }
  }
  
  return false;
}

G4bool G4EnclosingCylinder::ShouldMiss	(	const G4ThreeVector &	p,
		const G4ThreeVector &	v
	)			const

Definition at line 148 of file G4EnclosingCylinder.cc.

References MustBeOutside(), and radius.

Referenced by G4Polyhedra::DistanceToIn(), and G4Polycone::DistanceToIn().

{
  if (!MustBeOutside(p)) return false;
  
  G4double cross = p.x()*v.y() - p.y()*v.x();
  if (cross > radius) return true;
  
  if (p.perp() > radius)
  {
    G4double dot = p.x()*v.x() + p.y()*v.y();
    if (dot > 0) return true;
  }

  return false;
}

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Field Documentation

G4bool G4EnclosingCylinder::concave [protected]

Definition at line 91 of file G4EnclosingCylinder.hh.

Referenced by MustBeOutside().

G4double G4EnclosingCylinder::dx1 [protected]

Definition at line 86 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder(), and MustBeOutside().

G4double G4EnclosingCylinder::dx2 [protected]

Definition at line 88 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder(), and MustBeOutside().

G4double G4EnclosingCylinder::dy1 [protected]

Definition at line 86 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder(), and MustBeOutside().

G4double G4EnclosingCylinder::dy2 [protected]

Definition at line 88 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder(), and MustBeOutside().

G4bool G4EnclosingCylinder::phiIsOpen [protected]

Definition at line 82 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder(), and MustBeOutside().

G4double G4EnclosingCylinder::radius [protected]

Definition at line 79 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder(), MustBeOutside(), and ShouldMiss().

G4double G4EnclosingCylinder::rx1 [protected]

Definition at line 86 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder(), and MustBeOutside().

G4double G4EnclosingCylinder::rx2 [protected]

Definition at line 88 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder(), and MustBeOutside().

G4double G4EnclosingCylinder::ry1 [protected]

Definition at line 86 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder(), and MustBeOutside().

G4double G4EnclosingCylinder::ry2 [protected]

Definition at line 88 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder(), and MustBeOutside().

G4double G4EnclosingCylinder::startPhi [protected]

Definition at line 83 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder().

G4double G4EnclosingCylinder::totalPhi [protected]

Definition at line 83 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder().

G4double G4EnclosingCylinder::zHi [protected]

Definition at line 80 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder(), and MustBeOutside().

G4double G4EnclosingCylinder::zLo [protected]

Definition at line 80 of file G4EnclosingCylinder.hh.

Referenced by G4EnclosingCylinder(), and MustBeOutside().

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

• G4EnclosingCylinder.hh
• G4EnclosingCylinder.cc

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