Efficient storage of magnet strengths. More...

#include <BDSMagnetStrength.hh>

Collaboration diagram for BDSMagnetStrength:

Data Structures
struct	unitsFactors
	Structure for unit names and numerical factors from Geant4 to SI(ish). More...

Public Member Functions
	BDSMagnetStrength ()
	Default constructor does nothing as class will return 0 for uninitialised keys.

	BDSMagnetStrength (const std::map< G4String, G4double > &keyvalues)
	This constructor allows instantiation with a map of keys and values.

std::ostream &	WriteValuesInSIUnitsForSuvey (std::ostream &out, const G4int precision=14) const

G4double &	operator[] (const G4String &key)
	Accessors with array / map [] operator.

const G4double &	operator[] (const G4String &key) const

const G4double &	at (const G4String &key) const

std::vector< G4double >	NormalComponents () const
	Accessor for all normal components - k1 - k12.

std::vector< G4double >	SkewComponents () const
	Accessor for all skew components - k1 - k12.

G4bool	KeyHasBeenSet (const G4String &key) const
	Whether a key has been set.

Static Public Member Functions
static const std::vector< G4String > &	AllKeys ()
	Accessor to all keys.

static G4bool	ValidKey (const G4String &key)
	Whether or not the supplied key is a valid magnet strength parameter.

static const std::map< G4String, unitsFactors > &	UnitsAndFactors ()
	Accessor to all units.

static std::vector< G4String >	NormalComponentKeys ()
	Accessor for normal component keys - k1 - k12.

static std::vector< G4String >	SkewComponentKeys ()
	Accessor for skew component keys - k1 - k12.

static G4String	UnitName (const G4String &key)
	Access a unit name for a given key.

static G4double	Unit (const G4String &key)
	Access a unit factor for a given key.

Private Types
typedef std::map< G4String, G4double >	StrengthMap
	Typedefs up first so we can declare public iterators.

Private Member Functions
const G4double &	GetValue (const G4String &key) const

Private Attributes
StrengthMap	strengths

Static Private Attributes
static const std::vector< G4String >	keys
	Vector of the allowed strength parameters.

static const std::map< G4String, unitsFactors >	unitsFactorsMap
	Map of each unit name and numerical factor to each key.

static const std::vector< G4String >	normalComponentKeys
	Vector of the normal component strength parameters.

static const std::vector< G4String >	skewComponentKeys
	Vector of the normal component strength parameters.

static const G4double	zero = 0.0
	Keep a single copy of 0.0 as it needs to be returned as a reference not a value.

static G4double	variable = 0.0
	Dummy variable that can be overwritten.

Friends
std::ostream &	operator<< (std::ostream &out, BDSMagnetStrength const &st)
	Output stream.

typedef StrengthMap::iterator	iterator
	Iterator mechanics.

typedef StrengthMap::const_iterator	const_iterator
	Iterator mechanics.

iterator	begin ()
	Iterator mechanics.

iterator	end ()
	Iterator mechanics.

const_iterator	begin () const
	Iterator mechanics.

const_iterator	end () const
	Iterator mechanics.

G4bool	empty () const
	Iterator mechanics.

Detailed Description

Efficient storage of magnet strengths.

Based on std::map, this class stores magnet strengths.

As there will be one of these for every magnet and there are many parameters (e.g. up to ~40 doubles), it is more efficient to only store the required parameters. A pure quadrupole has no need of k20s, but a multipole may do. A static vector contains the allowed keys that can be checked against before setting the value. If a (valid) key is not specified in the map, its value is returned as 0.

Angle in rad, Field in Geant4 units. k strengths as original (ie not converted to G4).

Author: Laurie Nevay

Definition at line 44 of file BDSMagnetStrength.hh.

Member Typedef Documentation

◆ const_iterator

typedef StrengthMap::const_iterator BDSMagnetStrength::const_iterator

Iterator mechanics.

Definition at line 117 of file BDSMagnetStrength.hh.

◆ iterator

typedef StrengthMap::iterator BDSMagnetStrength::iterator

Iterator mechanics.

Definition at line 116 of file BDSMagnetStrength.hh.

◆ StrengthMap

typedef std::map<G4String, G4double> BDSMagnetStrength::StrengthMap

private

Typedefs up first so we can declare public iterators.

Definition at line 48 of file BDSMagnetStrength.hh.

Constructor & Destructor Documentation

◆ BDSMagnetStrength() [1/2]

BDSMagnetStrength::BDSMagnetStrength ( )

inline

Default constructor does nothing as class will return 0 for uninitialised keys.

Definition at line 57 of file BDSMagnetStrength.hh.

◆ BDSMagnetStrength() [2/2]

BDSMagnetStrength::BDSMagnetStrength ( const std::map< G4String, G4double > & keyvalues )

explicit

This constructor allows instantiation with a map of keys and values.

Definition at line 181 of file BDSMagnetStrength.cc.

References ValidKey().

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◆ ~BDSMagnetStrength()

BDSMagnetStrength::~BDSMagnetStrength ( )

inline

Definition at line 62 of file BDSMagnetStrength.hh.

Member Function Documentation

◆ AllKeys()

static const std::vector< G4String > & BDSMagnetStrength::AllKeys ( )

inlinestatic

Accessor to all keys.

Definition at line 86 of file BDSMagnetStrength.hh.

References keys.

Referenced by BDSFieldFactory::PrepareFieldStrengthFromParameters().

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◆ at()

const G4double & BDSMagnetStrength::at ( const G4String & key ) const

inline

Definition at line 83 of file BDSMagnetStrength.hh.

◆ begin() [1/2]

iterator BDSMagnetStrength::begin ( )

inline

Iterator mechanics.

Definition at line 118 of file BDSMagnetStrength.hh.

References strengths.

◆ begin() [2/2]

const_iterator BDSMagnetStrength::begin ( ) const

inline

Iterator mechanics.

Definition at line 120 of file BDSMagnetStrength.hh.

References strengths.

◆ empty()

G4bool BDSMagnetStrength::empty ( ) const

inline

Iterator mechanics.

Definition at line 122 of file BDSMagnetStrength.hh.

References strengths.

◆ end() [1/2]

iterator BDSMagnetStrength::end ( )

inline

Iterator mechanics.

Definition at line 119 of file BDSMagnetStrength.hh.

References strengths.

◆ end() [2/2]

const_iterator BDSMagnetStrength::end ( ) const

inline

Iterator mechanics.

Definition at line 121 of file BDSMagnetStrength.hh.

References strengths.

◆ GetValue()

const G4double & BDSMagnetStrength::GetValue ( const G4String & key ) const

private

Accessor similar to [] but without linear search through keys to check validity. for fast internal use.

Definition at line 274 of file BDSMagnetStrength.cc.

References strengths, and zero.

Referenced by NormalComponents(), SkewComponents(), and WriteValuesInSIUnitsForSuvey().

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◆ KeyHasBeenSet()

G4bool BDSMagnetStrength::KeyHasBeenSet ( const G4String & key ) const

Whether a key has been set.

Definition at line 283 of file BDSMagnetStrength.cc.

References strengths.

Referenced by BDSFieldFactory::GetOuterScaling().

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◆ NormalComponentKeys()

static std::vector< G4String > BDSMagnetStrength::NormalComponentKeys ( )

inlinestatic

Accessor for normal component keys - k1 - k12.

Definition at line 95 of file BDSMagnetStrength.hh.

References normalComponentKeys.

Referenced by BDSComponentFactory::PrepareMagnetStrengthForMultipoles().

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◆ NormalComponents()

std::vector< G4double > BDSMagnetStrength::NormalComponents ( ) const

Accessor for all normal components - k1 - k12.

Definition at line 248 of file BDSMagnetStrength.cc.

References GetValue(), and normalComponentKeys.

Referenced by BDSOutputROOTEventModel::Fill().

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◆ operator[]() [1/2]

G4double & BDSMagnetStrength::operator[] ( const G4String & key )

Accessors with array / map [] operator.

Definition at line 221 of file BDSMagnetStrength.cc.

References strengths, and ValidKey().

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◆ operator[]() [2/2]

const G4double & BDSMagnetStrength::operator[] ( const G4String & key ) const

Definition at line 240 of file BDSMagnetStrength.cc.

◆ SkewComponentKeys()

static std::vector< G4String > BDSMagnetStrength::SkewComponentKeys ( )

inlinestatic

Accessor for skew component keys - k1 - k12.

Definition at line 98 of file BDSMagnetStrength.hh.

References skewComponentKeys.

Referenced by BDSComponentFactory::PrepareMagnetStrengthForMultipoles().

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◆ SkewComponents()

std::vector< G4double > BDSMagnetStrength::SkewComponents ( ) const

Accessor for all skew components - k1 - k12.

Definition at line 257 of file BDSMagnetStrength.cc.

References GetValue(), and skewComponentKeys.

Referenced by BDSOutputROOTEventModel::Fill().

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◆ Unit()

G4double BDSMagnetStrength::Unit ( const G4String & key )

static

Access a unit factor for a given key.

Definition at line 213 of file BDSMagnetStrength.cc.

References unitsFactorsMap, and ValidKey().

Referenced by BDSOutputROOTEventModel::Fill(), and BDSFieldFactory::PrepareFieldStrengthFromParameters().

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◆ UnitName()

G4String BDSMagnetStrength::UnitName ( const G4String & key )

static

Access a unit name for a given key.

Definition at line 205 of file BDSMagnetStrength.cc.

References unitsFactorsMap, and ValidKey().

Referenced by BDSSurvey::WriteHeader().

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◆ UnitsAndFactors()

static const std::map< G4String, unitsFactors > & BDSMagnetStrength::UnitsAndFactors ( )

inlinestatic

Accessor to all units.

Definition at line 92 of file BDSMagnetStrength.hh.

References unitsFactorsMap.

◆ ValidKey()

G4bool BDSMagnetStrength::ValidKey ( const G4String & key )

static

Whether or not the supplied key is a valid magnet strength parameter.

Definition at line 266 of file BDSMagnetStrength.cc.

References keys.

Referenced by BDSMagnetStrength(), operator[](), BDSFieldFactory::PrepareFieldStrengthFromParameters(), Unit(), and UnitName().

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◆ WriteValuesInSIUnitsForSuvey()

std::ostream & BDSMagnetStrength::WriteValuesInSIUnitsForSuvey	(	std::ostream &	out,
		const G4int	precision = `14`
	)		const

Print out each magnet strength value in order according to keys multiplied by the correct factors to return to the units on the input side of BDSIM rather than the Geant4 ones used internally.

Definition at line 197 of file BDSMagnetStrength.cc.

References GetValue(), keys, and unitsFactorsMap.

Referenced by BDSSurvey::Write().

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Friends And Related Function Documentation

◆ operator<<

std::ostream & operator<<	(	std::ostream &	out,
		BDSMagnetStrength const &	st
	)

friend

Output stream.

Definition at line 190 of file BDSMagnetStrength.cc.

Field Documentation

◆ keys

const std::vector< G4String > BDSMagnetStrength::keys

staticprivate

Vector of the allowed strength parameters.

Definition at line 131 of file BDSMagnetStrength.hh.

Referenced by AllKeys(), ValidKey(), and WriteValuesInSIUnitsForSuvey().

◆ normalComponentKeys

const std::vector< G4String > BDSMagnetStrength::normalComponentKeys

staticprivate

Initial value:

= {

"k1", "k2", "k3", "k4", "k5", "k6", "k7", "k8", "k9", "k10", "k11", "k12"}

Vector of the normal component strength parameters.

Definition at line 137 of file BDSMagnetStrength.hh.

Referenced by NormalComponentKeys(), and NormalComponents().

◆ skewComponentKeys

const std::vector< G4String > BDSMagnetStrength::skewComponentKeys

staticprivate

Initial value:

= {

"k1s", "k2s", "k3s", "k4s", "k5s", "k6s", "k7s", "k8s", "k9s", "k10s", "k11s", "k12s"}

Vector of the normal component strength parameters.

Definition at line 140 of file BDSMagnetStrength.hh.

Referenced by SkewComponentKeys(), and SkewComponents().

◆ strengths

StrengthMap BDSMagnetStrength::strengths

private

A map containing the values for various magnet strengths. It only contains the set magnet strengths. If a strength isn't specified, it's assumed to be zero without having to store the 0 value.

Definition at line 53 of file BDSMagnetStrength.hh.

Referenced by begin(), empty(), end(), GetValue(), KeyHasBeenSet(), and operator[]().

◆ unitsFactorsMap

const std::map< G4String, BDSMagnetStrength::unitsFactors > BDSMagnetStrength::unitsFactorsMap

staticprivate

Map of each unit name and numerical factor to each key.

Definition at line 134 of file BDSMagnetStrength.hh.

Referenced by Unit(), UnitName(), UnitsAndFactors(), and WriteValuesInSIUnitsForSuvey().

◆ variable

G4double BDSMagnetStrength::variable = 0.0

staticprivate

Dummy variable that can be overwritten.

Definition at line 146 of file BDSMagnetStrength.hh.

◆ zero

const G4double BDSMagnetStrength::zero = 0.0

staticprivate

Keep a single copy of 0.0 as it needs to be returned as a reference not a value.

Definition at line 143 of file BDSMagnetStrength.hh.

Referenced by GetValue().

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

/Users/lnevay/physics/reps/bdsim/include/BDSMagnetStrength.hh
/Users/lnevay/physics/reps/bdsim/src/BDSMagnetStrength.cc

Data Structures

Public Member Functions

Static Public Member Functions

Private Types

Private Member Functions

Private Attributes

Static Private Attributes

Friends

Detailed Description

Member Typedef Documentation

◆ const_iterator

◆ iterator

◆ StrengthMap

Constructor & Destructor Documentation

◆ BDSMagnetStrength() [1/2]

◆ BDSMagnetStrength() [2/2]

◆ ~BDSMagnetStrength()

Member Function Documentation

◆ AllKeys()

◆ at()

◆ begin() [1/2]

◆ begin() [2/2]

◆ empty()

◆ end() [1/2]

◆ end() [2/2]

◆ GetValue()

◆ KeyHasBeenSet()

◆ NormalComponentKeys()

◆ NormalComponents()

◆ operator[]() [1/2]

◆ operator[]() [2/2]

◆ SkewComponentKeys()

◆ SkewComponents()

◆ Unit()

◆ UnitName()

◆ UnitsAndFactors()

◆ ValidKey()

◆ WriteValuesInSIUnitsForSuvey()

Friends And Related Function Documentation

◆ operator<<

Field Documentation

◆ keys

◆ normalComponentKeys

◆ skewComponentKeys

◆ strengths

◆ unitsFactorsMap

◆ variable

◆ zero