HepMC3 event record library
GenParticle.cc
Go to the documentation of this file.
1// -*- C++ -*-
2//
3// This file is part of HepMC
4// Copyright (C) 2014-2021 The HepMC collaboration (see AUTHORS for details)
5//
6/**
7 * @file GenParticle.cc
8 * @brief Implementation of \b class GenParticle
9 *
10 */
11#include "HepMC3/GenParticle.h"
12#include "HepMC3/GenVertex.h"
13#include "HepMC3/GenEvent.h"
14#include "HepMC3/Setup.h"
15#include "HepMC3/Attribute.h"
16
17namespace HepMC3 {
18
19GenParticle::GenParticle(const FourVector &mom, int pidin, int stat):
20 m_event(nullptr),
21 m_id(0) {
22 m_data.pid = pidin;
23 m_data.momentum = mom;
24 m_data.status = stat;
25 m_data.is_mass_set = false;
26 m_data.mass = 0.0;
27}
28
30 m_event(nullptr),
31 m_id(0),
32 m_data(dat) {
33}
34
36 if (m_data.is_mass_set) return m_data.mass;
37 else return m_data.momentum.m();
38}
39
40void GenParticle::set_pid(int pidin) {
41 m_data.pid = pidin;
42}
43
45 m_data.status = stat;
46}
47
49 m_data.momentum = mom;
50}
51
53 m_data.mass = m;
54 m_data.is_mass_set = true;
55}
56
58 m_data.mass = 0.;
59 m_data.is_mass_set = false;
60}
61
63 return m_production_vertex.lock();
64}
65
66ConstGenVertexPtr GenParticle::production_vertex() const {
67 return std::const_pointer_cast<const GenVertex>(m_production_vertex.lock());
68}
69
71 return m_end_vertex.lock();
72}
73
74ConstGenVertexPtr GenParticle::end_vertex() const {
75 return std::const_pointer_cast<const GenVertex>(m_end_vertex.lock());
76}
77
78std::vector<GenParticlePtr> GenParticle::parents() {
79 return (m_production_vertex.expired())? std::vector<GenParticlePtr>() : production_vertex()->particles_in();
80}
81
82std::vector<ConstGenParticlePtr> GenParticle::parents() const {
83 return (m_production_vertex.expired()) ? std::vector<ConstGenParticlePtr>() : production_vertex()->particles_in();
84}
85
86std::vector<GenParticlePtr> GenParticle::children() {
87 return (m_end_vertex.expired())? std::vector<GenParticlePtr>() : end_vertex()->particles_out();
88}
89
90std::vector<ConstGenParticlePtr> GenParticle::children() const {
91 return (m_end_vertex.expired()) ? std::vector<ConstGenParticlePtr>() : end_vertex()->particles_out();
92}
93
94bool GenParticle::add_attribute(const std::string& name, std::shared_ptr<Attribute> att) {
95 if ( !parent_event() ) return false;
96 parent_event()->add_attribute(name, att, id());
97 return true;
98}
99
100std::vector<std::string> GenParticle::attribute_names() const {
101 if ( parent_event() ) return parent_event()->attribute_names(id());
102
103 return std::vector<std::string>();
104}
105
106void GenParticle::remove_attribute(const std::string& name) {
107 if ( parent_event() ) parent_event()->remove_attribute(name, id());
108}
109
110std::string GenParticle::attribute_as_string(const std::string& name) const {
111 return parent_event() ? parent_event()->attribute_as_string(name, id()) : std::string();
112}
113
114} // namespace HepMC3
Definition of class Attribute, class IntAttribute and class StringAttribute.
Definition of class GenEvent.
Definition of class GenParticle.
Definition of class GenVertex.
Definition of class Setup.
Generic 4-vector.
Definition: FourVector.h:36
double m() const
Invariant mass. Returns -sqrt(-m) if e^2 - P^2 is negative.
Definition: FourVector.h:167
std::vector< std::string > attribute_names(const int &id=0) const
Get list of attribute names.
Definition: GenEvent.cc:621
void add_attribute(const std::string &name, const std::shared_ptr< Attribute > &att, const int &id=0)
Definition: GenEvent.cc:806
void remove_attribute(const std::string &name, const int &id=0)
Remove attribute.
Definition: GenEvent.cc:609
std::string attribute_as_string(const std::string &name, const int &id=0) const
Get attribute of any type as string.
Definition: GenEvent.cc:784
void set_pid(int pid)
Set PDG ID.
Definition: GenParticle.cc:40
ConstGenVertexPtr end_vertex() const
Get end vertex (const version)
Definition: GenParticle.cc:74
void unset_generated_mass()
Declare that generated mass is not set.
Definition: GenParticle.cc:57
GenParticle(const FourVector &momentum=FourVector::ZERO_VECTOR(), int pid=0, int status=0)
Default constructor.
Definition: GenParticle.cc:19
void remove_attribute(const std::string &name)
Remove attribute.
Definition: GenParticle.cc:106
std::weak_ptr< GenVertex > m_production_vertex
Production vertex.
Definition: GenParticle.h:148
std::vector< GenParticlePtr > children()
Convenience access to immediate outgoing particles via end vertex.
Definition: GenParticle.cc:86
bool add_attribute(const std::string &name, std::shared_ptr< Attribute > att)
Add an attribute to this particle.
Definition: GenParticle.cc:94
std::vector< std::string > attribute_names() const
Get list of names of attributes assigned to this particle.
Definition: GenParticle.cc:100
std::weak_ptr< GenVertex > m_end_vertex
End vertex.
Definition: GenParticle.h:149
std::vector< GenParticlePtr > parents()
Convenience access to immediate incoming particles via production vertex.
Definition: GenParticle.cc:78
ConstGenVertexPtr production_vertex() const
Get production vertex (const version)
Definition: GenParticle.cc:66
void set_momentum(const FourVector &momentum)
Set momentum.
Definition: GenParticle.cc:48
void set_status(int status)
Set status code.
Definition: GenParticle.cc:44
GenEvent * parent_event()
Get parent event.
Definition: GenParticle.h:58
void set_generated_mass(double m)
Set generated mass.
Definition: GenParticle.cc:52
double generated_mass() const
Get generated mass.
Definition: GenParticle.cc:35
GenParticleData m_data
Particle data.
Definition: GenParticle.h:146
std::string attribute_as_string(const std::string &name) const
Get attribute of any type as string.
Definition: GenParticle.cc:110
HepMC3 main namespace.
Stores serializable particle information.
double mass
Generated mass (if set)
FourVector momentum
Momentum.
bool is_mass_set
Check if generated mass is set.