#include <IterativeHelixExtrapolatorToLine.h>

Inheritance diagram for IterativeHelixExtrapolatorToLine:

Public Member Functions
virtual DirectionType	direction (double s) const

DirectionTypeDouble	directionInDouble (double s) const

	IterativeHelixExtrapolatorToLine (const PositionType &point, const DirectionType &direction, const float curvature, const PropagationDirection propDir=anyDirection)

virtual std::pair< bool, double >	pathLength (const GlobalPoint &point) const

virtual std::pair< bool, double >	pathLength (const Line &line) const

virtual PositionType	position (double s) const

PositionTypeDouble	positionInDouble (double s) const

virtual	~IterativeHelixExtrapolatorToLine ()

Private Member Functions
template<class T >
std::pair< bool, double >	genericPathLength (const T &object) const
	common functionality for extrapolation to line or point More...

Private Attributes
double	theCachedCDPhi

double	theCachedDPhi

double	theCachedS

double	theCachedSDPhi

double	theCosPhi0

double	theCosTheta

const PropagationDirection	thePropDir

HelixExtrapolatorToLine2Order	theQuadraticSolutionFromStart

const double	theRho

double	theSinPhi0

double	theSinTheta

const double	theX0

const double	theY0

const double	theZ0

Additional Inherited Members
Public Types inherited from HelixLineExtrapolation
typedef Basic3DVector< float >	DirectionType

typedef Basic3DVector< double >	DirectionTypeDouble

typedef Basic3DVector< float >	PositionType

typedef Basic3DVector< double >	PositionTypeDouble

Detailed Description

Calculates closest approach of a helix to a line or a point by iterative use of a 2nd order expansion of the helix.

Definition at line 13 of file IterativeHelixExtrapolatorToLine.h.

Constructor & Destructor Documentation

IterativeHelixExtrapolatorToLine::IterativeHelixExtrapolatorToLine	(	const PositionType &	point,
		const DirectionType &	direction,
		const float	curvature,
		const PropagationDirection	propDir = `anyDirection`
	)

Constructor using point, direction and (transverse!) curvature.

Definition at line 5 of file IterativeHelixExtrapolatorToLine.cc.

virtual IterativeHelixExtrapolatorToLine::~IterativeHelixExtrapolatorToLine ( )

inlinevirtual

Definition at line 22 of file IterativeHelixExtrapolatorToLine.h.

22 {}

Member Function Documentation

HelixLineExtrapolation::DirectionType IterativeHelixExtrapolatorToLine::direction ( double s ) const

virtual

Direction at pathlength s from the starting point.

Implements HelixLineExtrapolation.

Definition at line 183 of file IterativeHelixExtrapolatorToLine.cc.

Referenced by AnalyticalImpactPointExtrapolator::propagateWithHelix(), and AnalyticalTrajectoryExtrapolatorToLine::propagateWithHelix().

HelixLineExtrapolation::DirectionTypeDouble IterativeHelixExtrapolatorToLine::directionInDouble ( double s ) const

Direction at pathlength s from the starting point.

Definition at line 194 of file IterativeHelixExtrapolatorToLine.cc.

template<class T >

std::pair< bool, double > IterativeHelixExtrapolatorToLine::genericPathLength ( const T & object ) const

private

common functionality for extrapolation to line or point

Definition at line 58 of file IterativeHelixExtrapolatorToLine.cc.

std::pair< bool, double > IterativeHelixExtrapolatorToLine::pathLength ( const GlobalPoint & point ) const

virtual

Propagation status (true if valid) and (signed) path length along the helix from the starting point to the closest approach. to the point. The starting point is given in the constructor.

Implements HelixLineExtrapolation.

Definition at line 40 of file IterativeHelixExtrapolatorToLine.cc.

Referenced by AnalyticalImpactPointExtrapolator::propagateWithHelix(), and AnalyticalTrajectoryExtrapolatorToLine::propagateWithHelix().

std::pair< bool, double > IterativeHelixExtrapolatorToLine::pathLength ( const Line & line ) const

virtual

Propagation status (true if valid) and (signed) path length along the helix from the starting point to the closest approach to the line. The starting point is given in the constructor.

Implements HelixLineExtrapolation.

Definition at line 48 of file IterativeHelixExtrapolatorToLine.cc.

HelixLineExtrapolation::PositionType IterativeHelixExtrapolatorToLine::position ( double s ) const

virtual

Position at pathlength s from the starting point.

Implements HelixLineExtrapolation.

Definition at line 135 of file IterativeHelixExtrapolatorToLine.cc.

Referenced by AnalyticalImpactPointExtrapolator::propagateWithHelix(), and AnalyticalTrajectoryExtrapolatorToLine::propagateWithHelix().

HelixLineExtrapolation::PositionTypeDouble IterativeHelixExtrapolatorToLine::positionInDouble ( double s ) const

Position at pathlength s from the starting point.

Definition at line 144 of file IterativeHelixExtrapolatorToLine.cc.