siscone::hash_cones Class Reference

list of cones candidates. More...

#include <hash.h>

Collaboration diagram for siscone::hash_cones:

[legend]

List of all members.

Public Member Functions
	hash_cones (int _Np, double _R2)
	constructor with initialisation
	~hash_cones ()
	destructor
int	insert (Cmomentum *v, Cmomentum *parent, Cmomentum *child, bool p_io, bool c_io)
	insert a new candidate into the hash.
int	insert (Cmomentum *v)
	insert a new candidate into the hash.
bool	is_inside (Cmomentum *centre, Cmomentum *v)
	test if a particle is inside a cone of given centre.
Public Attributes
hash_element **	hash_array
	the cone data itself
int	n_cones
	number of elements
int	mask
	number of cells-1
double	R2
	circle radius (squared) NOTE: need to be set before any call to 'insert'

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Detailed Description

list of cones candidates.

We store in this class all the hash_elements and give functions to manipulate them.

Definition at line 62 of file hash.h.

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Constructor & Destructor Documentation

siscone::hash_cones::hash_cones	(	int	_Np,
		double	_R2
	)

constructor with initialisation

Parameters:

	_Np	number of particles
	_R2	cone radius (squared)

Definition at line 47 of file hash.cpp.

References hash_array, mask, n_cones, and R2.

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Member Function Documentation

int siscone::hash_cones::insert	(	Cmomentum *	v,
		Cmomentum *	parent,
		Cmomentum *	child,
		bool	p_io,
		bool	c_io
	)

insert a new candidate into the hash.

Parameters:

	v	4-momentum of te cone to add
	parent	parent particle defining the cone
	child	child particle defining the cone
	p_io	whether the parent has to belong to the cone or not
	c_io	whether the child has to belong to the cone or not

Returns:

0 on success, 1 on error

Definition at line 95 of file hash.cpp.

References siscone::Cmomentum::build_etaphi(), siscone::Cmomentum::eta, siscone::hash_element::eta, hash_array, is_inside(), siscone::hash_element::is_stable, mask, n_cones, siscone::hash_element::next, siscone::Cmomentum::phi, siscone::hash_element::phi, siscone::hash_element::ref, siscone::Creference::ref, and siscone::Cmomentum::ref.

int siscone::hash_cones::insert

(

Cmomentum *

v

)

insert a new candidate into the hash.

Parameters:

v

4-momentum of te cone to add Note, in this case, we assume stability. We also assume that eta and phi are computed for v

Returns:

0 on success, 1 on error

Definition at line 158 of file hash.cpp.

References siscone::Cmomentum::eta, siscone::hash_element::eta, hash_array, siscone::hash_element::is_stable, mask, n_cones, siscone::hash_element::next, siscone::Cmomentum::phi, siscone::hash_element::phi, siscone::hash_element::ref, siscone::Creference::ref, and siscone::Cmomentum::ref.

bool siscone::hash_cones::is_inside	(	Cmomentum *	centre,
		Cmomentum *	v
	)			[inline]

test if a particle is inside a cone of given centre.

check if the particle of coordinates 'v' is inside the circle of radius R centered at 'centre'.

Parameters:

	centre	centre of the circle
	v	particle to test

Returns:

true if inside, false if outside

Definition at line 206 of file hash.cpp.

References siscone::Cmomentum::eta, siscone::Cmomentum::phi, and R2.

Referenced by insert().

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

• siscone/hash.h
• siscone/hash.cpp