G4CircularCurve Class Reference

#include <G4CircularCurve.hh>

Inheritance diagram for G4CircularCurve:

Public Member Functions
	G4CircularCurve ()
virtual	~G4CircularCurve ()
	G4CircularCurve (const G4CircularCurve &right)
G4CircularCurve &	operator= (const G4CircularCurve &right)
virtual G4Curve *	Project (const G4Transform3D &tr=G4Transform3D::Identity)
virtual G4bool	Tangent (G4CurvePoint &cp, G4Vector3D &v)
virtual G4double	GetPMax () const
virtual G4Point3D	GetPoint (G4double param) const
virtual G4double	GetPPoint (const G4Point3D &p) const
G4double	GetRadius () const
void	Init (const G4Axis2Placement3D &position0, G4double radius0)
virtual G4int	IntersectRay2D (const G4Ray &ray)
Public Member Functions inherited from G4Conic
	G4Conic ()
virtual	~G4Conic ()
	G4Conic (const G4Conic &right)
G4Conic &	operator= (const G4Conic &right)
const G4Axis2Placement3D *	GetPosition () const
G4double	GetPShift () const
void	SetPShift (G4double pShift0)
Public Member Functions inherited from G4Curve
	G4Curve ()
virtual	~G4Curve ()
	G4Curve (const G4Curve &c)
G4Curve &	operator= (const G4Curve &c)
G4bool	operator== (const G4Curve &right) const
virtual G4String	GetEntityType () const
virtual G4Curve *	Project (const G4Transform3D &tr=G4Transform3D::Identity)=0
virtual G4bool	Tangent (G4CurvePoint &cp, G4Vector3D &v)=0
virtual G4int	IntersectRay2D (const G4Ray &ray)=0
const G4Point3D &	GetStart () const
const G4Point3D &	GetEnd () const
G4double	GetPStart () const
G4double	GetPEnd () const
void	SetBounds (G4double p1, G4double p2)
void	SetBounds (G4double p1, const G4Point3D &p2)
void	SetBounds (const G4Point3D &p1, G4double p2)
void	SetBounds (const G4Point3D &p1, const G4Point3D &p2)
G4bool	IsBounded () const
G4bool	IsPOn (G4double param) const
void	SetSameSense (G4int sameSense0)
G4int	GetSameSense () const
virtual G4double	GetPMax () const =0
virtual G4Point3D	GetPoint (G4double param) const =0
virtual G4double	GetPPoint (const G4Point3D &p) const =0
const G4BoundingBox3D *	BBox () const
virtual const char *	Name () const
virtual void	SetParentSrfPtr (const G4Surface *)

Protected Member Functions
virtual void	InitBounded ()
virtual void	InitBounded ()=0

Additional Inherited Members
Protected Attributes inherited from G4Conic
G4Axis2Placement3D	position
G4double	pShift
Protected Attributes inherited from G4Curve
G4BoundingBox3D	bBox
G4Point3D	start
G4Point3D	end
G4double	pStart
G4double	pEnd
G4double	pRange
G4bool	bounded
G4int	sameSense
G4double	kCarTolerance

Detailed Description

Definition at line 44 of file G4CircularCurve.hh.

Constructor & Destructor Documentation

G4CircularCurve() [1/2]

G4CircularCurve::G4CircularCurve

(

)

Definition at line 41 of file G4CircularCurve.cc.

: radius(0.) {}

~G4CircularCurve()

G4CircularCurve::~G4CircularCurve ( )

virtual

Definition at line 42 of file G4CircularCurve.cc.

{}

G4CircularCurve() [2/2]

G4CircularCurve::G4CircularCurve

(

const G4CircularCurve &

right

)

Definition at line 44 of file G4CircularCurve.cc.

  : G4Conic(), radius(right.radius)
{
  pShift    = right.pShift;
  position  = right.position;
  bBox      = right.bBox;
  start     = right.start;
  end       = right.end;
  pStart    = right.pStart;
  pEnd      = right.pEnd;
  pRange    = right.pRange;
  bounded   = right.bounded;
  sameSense = right.sameSense;
}

Member Function Documentation

GetPMax()

G4double G4CircularCurve::GetPMax ( ) const

virtual

Implements G4Curve.

Definition at line 128 of file G4CircularCurve.cc.

{
  return twopi;
}

GetPoint()

G4Point3D G4CircularCurve::GetPoint ( G4double  param ) const

virtual

Implements G4Curve.

Definition at line 133 of file G4CircularCurve.cc.

{
  return G4Point3D( position.GetLocation()+radius*
    ( std::cos(param)*position.GetPX() + std::sin(param)*position.GetPY() ) );
}

Referenced by InitBounded().

GetPPoint()

G4double G4CircularCurve::GetPPoint ( const G4Point3D &  p ) const

virtual

Implements G4Curve.

Definition at line 139 of file G4CircularCurve.cc.

{
  G4Point3D ptLocal= position.GetToPlacementCoordinates()*pt;
  G4double angle= std::atan2(ptLocal.y(), ptLocal.x());
  return (angle<0)? angle+twopi: angle;
}

GetRadius()

G4double G4CircularCurve::GetRadius ( ) const

inline

Init()

void G4CircularCurve::Init	(	const G4Axis2Placement3D &	position0,
		G4double	radius0
	)

InitBounded()

void G4CircularCurve::InitBounded ( )

protectedvirtual

Implements G4Curve.

Definition at line 81 of file G4CircularCurve.cc.

{  
  // the bbox must include the start and endpoints as well as the
  // extreme points if they lie on the curve
  bBox.Init(GetStart(), GetEnd());
  
  // the parameter values
  // belonging to the points with an extreme x, y and z coordinate
  for (G4int i=0; i<3; i++) 
  {
    G4double u = std::atan2(position.GetPY()(i), position.GetPX()(i));
    
    if (IsPOn(u)) 
      bBox.Extend(GetPoint(u));
    
    if (IsPOn(u+pi)) 
      bBox.Extend(GetPoint(u+pi));
  }
}

IntersectRay2D()

G4int G4CircularCurve::IntersectRay2D ( const G4Ray &  ray )

virtual

Implements G4Curve.

Definition at line 160 of file G4CircularCurve.cc.

{
  G4Exception("G4CircularCurve::IntersectRay2D()", "GeomSolids0002",
              FatalException,"G4CircularCurve is always 3D!");
  return 0;
}

operator=()

G4CircularCurve & G4CircularCurve::operator=

(

const G4CircularCurve &

right

)

Definition at line 60 of file G4CircularCurve.cc.

{
  if (&right == this) return *this;
 
  radius    = right.radius;
  pShift    = right.pShift;
  position  = right.position;
  bBox      = right.bBox;
  start     = right.start;
  end       = right.end;
  pStart    = right.pStart;
  pEnd      = right.pEnd;
  pRange    = right.pRange;
  bounded   = right.bounded;
  sameSense = right.sameSense;
 
  return *this;
}

Project()

G4Curve * G4CircularCurve::Project ( const G4Transform3D &  tr = G4Transform3D::Identity )

virtual

Implements G4Curve.

Definition at line 103 of file G4CircularCurve.cc.

{
  G4Ellipse e;
  e.Init(position, radius, radius);
  e.SetBounds(GetPStart(), GetPEnd());
 
  return e.Project(tr);
}

Tangent()

G4bool G4CircularCurve::Tangent ( G4CurvePoint &  cp, G4Vector3D &  v  )

virtual

Implements G4Curve.

Definition at line 114 of file G4CircularCurve.cc.

{
  // The tangent is computed from the 3D point representation
  // for all conics. An alternaive implementation (based on
  // the parametric point) might be worthwhile adding
  // for efficiency.
  
  const G4Axis2Placement3D& pos= *(GetPosition());
  G4Point3D p= pos.GetToPlacementCoordinates() * cp.GetPoint();
  
  v= -p.y()*pos.GetPX() + p.x()*pos.GetPY();
  return true;
}

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

• G4CircularCurve.hh
• G4CircularCurve.cc