ClosestApproachOnHelices Class Reference

#include <ClosestApproachOnHelices.h>

Inheritance diagram for ClosestApproachOnHelices:

List of all members.

Public Member Functions
virtual bool	calculate (const TrajectoryStateOnSurface &sta, const TrajectoryStateOnSurface &stb)=0
virtual bool	calculate (const FreeTrajectoryState &sta, const FreeTrajectoryState &stb)=0
virtual ClosestApproachOnHelices *	clone () const =0
	ClosestApproachOnHelices ()
virtual GlobalPoint	crossingPoint () const =0
virtual float	distance () const =0
virtual std::pair< GlobalPoint, GlobalPoint >	points () const =0
virtual bool	status () const =0
virtual	~ClosestApproachOnHelices ()

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Detailed Description

Abstract interface for classes which compute the points of closest approach of 2 helices.
For a pair of states, the calculate methods have to be called before any of the other methods. This will do all calculations needed to get the result. It returns a status which says whether the calculation was successful. This should be checked before getting the result. If the status is false and the results querried, an exception will be thrown.

Definition at line 20 of file ClosestApproachOnHelices.h.

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Constructor & Destructor Documentation

ClosestApproachOnHelices::ClosestApproachOnHelices

(

)

[inline]

Definition at line 24 of file ClosestApproachOnHelices.h.

{}

virtual ClosestApproachOnHelices::~ClosestApproachOnHelices

(

)

[inline, virtual]

Definition at line 26 of file ClosestApproachOnHelices.h.

{}

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Member Function Documentation

virtual bool ClosestApproachOnHelices::calculate	(	const TrajectoryStateOnSurface &	sta,
		const TrajectoryStateOnSurface &	stb
	)		[pure virtual]

Implemented in TangentApproachInRPhi, ClosestApproachInRPhi, and TwoTrackMinimumDistance.

virtual bool ClosestApproachOnHelices::calculate	(	const FreeTrajectoryState &	sta,
		const FreeTrajectoryState &	stb
	)		[pure virtual]

Implemented in TangentApproachInRPhi, ClosestApproachInRPhi, and TwoTrackMinimumDistance.

virtual ClosestApproachOnHelices* ClosestApproachOnHelices::clone

(

)

const [pure virtual]

Implemented in TangentApproachInRPhi, ClosestApproachInRPhi, and TwoTrackMinimumDistance.

virtual GlobalPoint ClosestApproachOnHelices::crossingPoint

(

)

const [pure virtual]

Crossing point of the 2 helices, computed as an average of the points of closest approach. The average can be weighted or not, depending on the implementation.

Implemented in TangentApproachInRPhi, ClosestApproachInRPhi, and TwoTrackMinimumDistance.

virtual float ClosestApproachOnHelices::distance

(

)

const [pure virtual]

Distance between the points of closest approach

Implemented in TangentApproachInRPhi, ClosestApproachInRPhi, and TwoTrackMinimumDistance.

virtual std::pair<GlobalPoint, GlobalPoint> ClosestApproachOnHelices::points

(

)

const [pure virtual]

Points of closest approach on the 2 helices

Implemented in TangentApproachInRPhi, ClosestApproachInRPhi, and TwoTrackMinimumDistance.

virtual bool ClosestApproachOnHelices::status

(

)

const [pure virtual]

Implemented in TangentApproachInRPhi, ClosestApproachInRPhi, and TwoTrackMinimumDistance.