/usr/include/Pythia8/Pythia8/FJcore.h is in libpythia8-dev 8.1.86-1.
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//
// fjcore constitutes a digest of the main FastJet functionality.
// The files fjcore.hh and fjcore.cc are meant to provide easy access to these
// core functions, in the form of single files and without the need of a full
// FastJet installation:
//
// g++ main.cc fjcore.cc
//
// with main.cc including fjcore.hh.
//
// The results are expected to be identical to those obtained by linking to
// the full FastJet distribution.
//
// NOTE THAT, IN ORDER TO MAKE IT POSSIBLE FOR FJCORE AND THE FULL FASTJET
// TO COEXIST, THE FORMER USES THE "fjcore" NAMESPACE INSTEAD OF "fastjet".
//
// In particular, fjcore provides:
//
// - access to all native pp and ee algorithms, kt, anti-kt, C/A.
// For C/A, the NlnN method is available, while anti-kt and kt
// are limited to the N^2 one (still the fastest for N < 20k particles)
// - access to selectors, for implementing cuts and selections
// - access to all functionalities related to pseudojets (e.g. a jet's
// structure or user-defined information)
//
// Instead, it does NOT provide:
//
// - jet areas functionality
// - background estimation
// - access to other algorithms via plugins
// - interface to CGAL
// - fastjet tools, e.g. filters, taggers
//
// If these functionalities are needed, the full FastJet installation must be
// used. The code will be fully compatible, with the sole replacement of the
// header files and of the fjcore namespace with the fastjet one.
//
// fjcore.hh and fjcore.cc are not meant to be human-readable.
// For documentation, see the full FastJet manual and doxygen at http://fastjet.fr
//
// Like FastJet, fjcore is released under the terms of the GNU General Public
// License version 2 (GPLv2). If you use this code as part of work towards a
// scientific publication, whether directly or contained within another program
// (e.g. Delphes, SpartyJet, Rivet, LHC collaboration software frameworks,
// etc.), you should include a citation to
//
// EPJC72(2012)1896 [arXiv:1111.6097] (FastJet User Manual)
// and, optionally, Phys.Lett.B641 (2006) 57 [arXiv:hep-ph/0512210]
//
// Copyright (c) 2005-2013, Matteo Cacciari, Gavin P. Salam and Gregory Soyez
//
//----------------------------------------------------------------------
// This file is part of FastJet.
//
// FastJet is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// The algorithms that underlie FastJet have required considerable
// development and are described in hep-ph/0512210. If you use
// FastJet as part of work towards a scientific publication, please
// include a citation to the FastJet paper.
//
// FastJet is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with FastJet. If not, see <http://www.gnu.org/licenses/>.
//----------------------------------------------------------------------
//
#ifndef __FJCORE_HH__
#define __FJCORE_HH__
#define __FJCORE__ // remove all the non-core code (a safekeeper)
#define __FJCORE_DROP_CGAL // disable CGAL support
#ifndef __FJCORE_FASTJET_BASE_HH__
#define __FJCORE_FASTJET_BASE_HH__
#define FJCORE_BEGIN_NAMESPACE namespace fjcore {
#define FJCORE_END_NAMESPACE }
#endif // __FJCORE_FASTJET_BASE_HH__
#ifndef __FJCORE_NUMCONSTS__
#define __FJCORE_NUMCONSTS__
FJCORE_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
const double pi = 3.141592653589793238462643383279502884197;
const double twopi = 6.283185307179586476925286766559005768394;
const double pisq = 9.869604401089358618834490999876151135314;
const double zeta2 = 1.644934066848226436472415166646025189219;
const double zeta3 = 1.202056903159594285399738161511449990765;
const double eulergamma = 0.577215664901532860606512090082402431042;
const double ln2 = 0.693147180559945309417232121458176568076;
FJCORE_END_NAMESPACE
#endif // __FJCORE_NUMCONSTS__
#ifndef __FJCORE_INTERNAL_IS_BASE_HH__
#define __FJCORE_INTERNAL_IS_BASE_HH__
FJCORE_BEGIN_NAMESPACE
template<typename T, T _t>
struct integral_type{
static const T value = _t; ///< the value (only member carrying info)
typedef T value_type; ///< a typedef for the type T
typedef integral_type<T,_t> type; ///< a typedef for the whole structure
};
template<typename T, T _t>
const T integral_type<T, _t>::value;
typedef integral_type<bool, true> true_type; ///< the bool 'true' value promoted to a type
typedef integral_type<bool, false> false_type; ///< the bool 'false' value promoted to a type
typedef char (&__yes_type)[1]; //< the yes type
typedef char (&__no_type) [2]; //< the no type
template<typename B, typename D>
struct __inheritance_helper{
#if !((_MSC_VER !=0 ) && (_MSC_VER == 1310)) // MSVC 7.1
template <typename T>
static __yes_type check_sig(D const volatile *, T);
#else
static __yes_type check_sig(D const volatile *, long);
#endif
static __no_type check_sig(B const volatile *, int);
};
template<typename B, typename D>
struct IsBaseAndDerived{
#if ((_MSC_FULL_VER != 0) && (_MSC_FULL_VER >= 140050000))
#pragma warning(push)
#pragma warning(disable:6334)
#endif
struct Host{
#if !((_MSC_VER !=0 ) && (_MSC_VER == 1310))
operator B const volatile *() const;
#else
operator B const volatile * const&() const;
#endif
operator D const volatile *();
};
static const bool value = ((sizeof(B)!=0) &&
(sizeof(D)!=0) &&
(sizeof(__inheritance_helper<B,D>::check_sig(Host(), 0)) == sizeof(__yes_type)));
#if ((_MSC_FULL_VER != 0) && (_MSC_FULL_VER >= 140050000))
#pragma warning(pop)
#endif
};
template<class B, class D>
B* cast_if_derived(D* d){
return IsBaseAndDerived<B,D>::value ? (B*)(d) : 0;
}
FJCORE_END_NAMESPACE
#endif // __IS_BASE_OF_HH__
#ifndef _INCLUDE_FJCORE_CONFIG_AUTO_H
#define _INCLUDE_FJCORE_CONFIG_AUTO_H 1
#ifndef FJCORE_HAVE_DLFCN_H
#define FJCORE_HAVE_DLFCN_H 1
#endif
#ifndef FJCORE_HAVE_EXECINFO_H
#define FJCORE_HAVE_EXECINFO_H 1
#endif
#ifndef FJCORE_HAVE_INTTYPES_H
#define FJCORE_HAVE_INTTYPES_H 1
#endif
#ifndef FJCORE_HAVE_LIBM
#define FJCORE_HAVE_LIBM 1
#endif
#ifndef FJCORE_HAVE_MEMORY_H
#define FJCORE_HAVE_MEMORY_H 1
#endif
#ifndef FJCORE_HAVE_STDINT_H
#define FJCORE_HAVE_STDINT_H 1
#endif
#ifndef FJCORE_HAVE_STDLIB_H
#define FJCORE_HAVE_STDLIB_H 1
#endif
#ifndef FJCORE_HAVE_STRINGS_H
#define FJCORE_HAVE_STRINGS_H 1
#endif
#ifndef FJCORE_HAVE_STRING_H
#define FJCORE_HAVE_STRING_H 1
#endif
#ifndef FJCORE_HAVE_SYS_STAT_H
#define FJCORE_HAVE_SYS_STAT_H 1
#endif
#ifndef FJCORE_HAVE_SYS_TYPES_H
#define FJCORE_HAVE_SYS_TYPES_H 1
#endif
#ifndef FJCORE_HAVE_UNISTD_H
#define FJCORE_HAVE_UNISTD_H 1
#endif
#ifndef FJCORE_LT_OBJDIR
#define FJCORE_LT_OBJDIR ".libs/"
#endif
#ifndef FJCORE_PACKAGE
#define FJCORE_PACKAGE "fastjet"
#endif
#ifndef FJCORE_PACKAGE_BUGREPORT
#define FJCORE_PACKAGE_BUGREPORT ""
#endif
#ifndef FJCORE_PACKAGE_NAME
#define FJCORE_PACKAGE_NAME "FastJet"
#endif
#ifndef FJCORE_PACKAGE_STRING
#define FJCORE_PACKAGE_STRING "FastJet 3.0.5"
#endif
#ifndef FJCORE_PACKAGE_TARNAME
#define FJCORE_PACKAGE_TARNAME "fastjet"
#endif
#ifndef FJCORE_PACKAGE_VERSION
#define FJCORE_PACKAGE_VERSION "3.0.5"
#endif
#ifndef FJCORE_STDC_HEADERS
#define FJCORE_STDC_HEADERS 1
#endif
#ifndef FJCORE_VERSION
#define FJCORE_VERSION "3.0.5"
#endif
#endif
#ifndef __FJCORE_CONFIG_H__
#define __FJCORE_CONFIG_H__
#endif // __FJCORE_CONFIG_H__
#ifndef __FJCORE_SHARED_PTR_HH__
#define __FJCORE_SHARED_PTR_HH__
#include <cstdlib> // for NULL!!!
#ifdef __FJCORE_USETR1SHAREDPTR
#include <tr1/memory>
#endif // __FJCORE_USETR1SHAREDPTR
FJCORE_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
#ifdef __FJCORE_USETR1SHAREDPTR
template<class T>
class SharedPtr : public std::tr1::shared_ptr<T> {
public:
SharedPtr() : std::tr1::shared_ptr<T>() {}
SharedPtr(T * t) : std::tr1::shared_ptr<T>(t) {}
SharedPtr(const SharedPtr<T> & t) : std::tr1::shared_ptr<T>(t) {}
inline operator bool() const {return (this->get()!=NULL);}
T* operator ()() const{
return this->get(); // automatically returns NULL when out-of-scope
}
};
#else // __FJCORE_USETR1SHAREDPTR
template<class T>
class SharedPtr{
public:
class __SharedCountingPtr;
SharedPtr() : _ptr(NULL){}
template<class Y> explicit SharedPtr(Y* ptr){
_ptr = new __SharedCountingPtr(ptr);
}
SharedPtr(SharedPtr const & share) : _ptr(share._get_container()){
if (_ptr!=NULL) ++(*_ptr);
}
~SharedPtr(){
if (_ptr==NULL) return;
_decrease_count();
}
void reset(){
SharedPtr().swap(*this);
}
template<class Y> void reset(Y * ptr){
SharedPtr(ptr).swap(*this);
}
template<class Y> void reset(SharedPtr<Y> const & share){
if (_ptr!=NULL){
if (_ptr == share._get_container()) return;
_decrease_count();
}
_ptr = share._get_container(); // Note: automatically set it to NULL if share is empty
if (_ptr!=NULL) ++(*_ptr);
}
SharedPtr& operator=(SharedPtr const & share){
reset(share);
return *this;
}
template<class Y> SharedPtr& operator=(SharedPtr<Y> const & share){
reset(share);
return *this;
}
T* operator ()() const{
if (_ptr==NULL) return NULL;
return _ptr->get(); // automatically returns NULL when out-of-scope
}
inline T& operator*() const{
return *(_ptr->get());
}
inline T* operator->() const{
if (_ptr==NULL) return NULL;
return _ptr->get();
}
inline T* get() const{
if (_ptr==NULL) return NULL;
return _ptr->get();
}
inline bool unique() const{
return (use_count()==1);
}
inline long use_count() const{
if (_ptr==NULL) return 0;
return _ptr->use_count(); // automatically returns NULL when out-of-scope
}
inline operator bool() const{
return (get()!=NULL);
}
inline void swap(SharedPtr & share){
__SharedCountingPtr* share_container = share._ptr;
share._ptr = _ptr;
_ptr = share_container;
}
void set_count(const long & count){
if (_ptr==NULL) return;
_ptr->set_count(count);
}
class __SharedCountingPtr{
public:
__SharedCountingPtr() : _ptr(NULL), _count(0){}
template<class Y> explicit __SharedCountingPtr(Y* ptr) : _ptr(ptr), _count(1){}
~__SharedCountingPtr(){
if (_ptr!=NULL){ delete _ptr;}
}
inline T* get() const {return _ptr;}
inline long use_count() const {return _count;}
inline long operator++(){return ++_count;}
inline long operator--(){return --_count;}
inline long operator++(int){return _count++;}
inline long operator--(int){return _count--;}
void set_count(const long & count){
_count = count;
}
private:
T *_ptr; ///< the pointer we're counting the references to
long _count; ///< the number of references
};
private:
inline __SharedCountingPtr* _get_container() const{
return _ptr;
}
void _decrease_count(){
(*_ptr)--;
if (_ptr->use_count()==0)
delete _ptr; // that automatically deletes the object itself
}
__SharedCountingPtr *_ptr;
};
template<class T,class U>
inline bool operator==(SharedPtr<T> const & t, SharedPtr<U> const & u){
return t.get() == u.get();
}
template<class T,class U>
inline bool operator!=(SharedPtr<T> const & t, SharedPtr<U> const & u){
return t.get() != u.get();
}
template<class T,class U>
inline bool operator<(SharedPtr<T> const & t, SharedPtr<U> const & u){
return t.get() < u.get();
}
template<class T>
inline void swap(SharedPtr<T> & a, SharedPtr<T> & b){
return a.swap(b);
}
template<class T>
inline T* get_pointer(SharedPtr<T> const & t){
return t.get();
}
#endif // __FJCORE_USETR1SHAREDPTR
FJCORE_END_NAMESPACE // defined in fastjet/internal/base.hh
#endif // __FJCORE_SHARED_PTR_HH__
#ifndef __FJCORE_ERROR_HH__
#define __FJCORE_ERROR_HH__
#include<iostream>
#include<string>
FJCORE_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
class Error {
public:
Error() {}
Error(const std::string & message);
virtual ~Error() {}
std::string message() const {return _message;}
static void set_print_errors(bool print_errors) {_print_errors = print_errors;}
static void set_print_backtrace(bool enabled) {_print_backtrace = enabled;}
static void set_default_stream(std::ostream * ostr) {
_default_ostr = ostr;
}
private:
std::string _message; ///< error message
static bool _print_errors; ///< do we print anything?
static bool _print_backtrace; ///< do we print the backtrace?
static std::ostream * _default_ostr; ///< the output stream (cerr if not set)
};
FJCORE_END_NAMESPACE
#endif // __FJCORE_ERROR_HH__
#ifndef __FJCORE_LIMITEDWARNING_HH__
#define __FJCORE_LIMITEDWARNING_HH__
#include <iostream>
#include <string>
#include <list>
FJCORE_BEGIN_NAMESPACE
class LimitedWarning {
public:
LimitedWarning() : _max_warn(_max_warn_default), _n_warn_so_far(0), _this_warning_summary(0) {}
LimitedWarning(int max_warn) : _max_warn(max_warn), _n_warn_so_far(0), _this_warning_summary(0) {}
void warn(const std::string & warning);
void warn(const std::string & warning, std::ostream * ostr);
static void set_default_stream(std::ostream * ostr) {
_default_ostr = ostr;
}
static void set_default_max_warn(int max_warn) {
_max_warn_default = max_warn;
}
static std::string summary();
private:
int _max_warn, _n_warn_so_far;
static int _max_warn_default;
static std::ostream * _default_ostr;
typedef std::pair<std::string, unsigned int> Summary;
static std::list< Summary > _global_warnings_summary;
Summary * _this_warning_summary;
};
FJCORE_END_NAMESPACE
#endif // __FJCORE_LIMITEDWARNING_HH__
#ifndef __FJCORE_PSEUDOJET_STRUCTURE_BASE_HH__
#define __FJCORE_PSEUDOJET_STRUCTURE_BASE_HH__
#include <vector>
#include <string>
FJCORE_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
class PseudoJet;
class ClusterSequence;
class PseudoJetStructureBase{
public:
PseudoJetStructureBase(){};
virtual ~PseudoJetStructureBase(){};
virtual std::string description() const{ return "PseudoJet with an unknown structure"; }
virtual bool has_associated_cluster_sequence() const { return false;}
virtual const ClusterSequence* associated_cluster_sequence() const;
virtual bool has_valid_cluster_sequence() const {return false;}
virtual const ClusterSequence * validated_cs() const;
virtual bool has_partner(const PseudoJet &reference, PseudoJet &partner) const;
virtual bool has_child(const PseudoJet &reference, PseudoJet &child) const;
virtual bool has_parents(const PseudoJet &reference, PseudoJet &parent1, PseudoJet &parent2) const;
virtual bool object_in_jet(const PseudoJet &reference, const PseudoJet &jet) const;
virtual bool has_constituents() const {return false;}
virtual std::vector<PseudoJet> constituents(const PseudoJet &reference) const;
virtual bool has_exclusive_subjets() const {return false;}
virtual std::vector<PseudoJet> exclusive_subjets(const PseudoJet &reference, const double & dcut) const;
virtual int n_exclusive_subjets(const PseudoJet &reference, const double & dcut) const;
virtual std::vector<PseudoJet> exclusive_subjets_up_to (const PseudoJet &reference, int nsub) const;
virtual double exclusive_subdmerge(const PseudoJet &reference, int nsub) const;
virtual double exclusive_subdmerge_max(const PseudoJet &reference, int nsub) const;
virtual bool has_pieces(const PseudoJet & /* reference */) const {
return false;}
virtual std::vector<PseudoJet> pieces(const PseudoJet & /* reference */
) const;
};
FJCORE_END_NAMESPACE
#endif // __FJCORE_PSEUDOJET_STRUCTURE_BASE_HH__
#ifndef __FJCORE_PSEUDOJET_HH__
#define __FJCORE_PSEUDOJET_HH__
#include<valarray>
#include<vector>
#include<cassert>
#include<cmath>
#include<iostream>
FJCORE_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
const double MaxRap = 1e5;
const double pseudojet_invalid_phi = -100.0;
const double pseudojet_invalid_rap = -1e200;
class PseudoJet {
public:
PseudoJet() : _px(0), _py(0), _pz(0), _E(0) {_finish_init(); _reset_indices();}
PseudoJet(const double px, const double py, const double pz, const double E);
template <class L> PseudoJet(const L & some_four_vector);
PseudoJet(bool /* dummy */) {}
virtual ~PseudoJet(){};
inline double E() const {return _E;}
inline double e() const {return _E;} // like CLHEP
inline double px() const {return _px;}
inline double py() const {return _py;}
inline double pz() const {return _pz;}
inline double phi() const {return phi_02pi();}
inline double phi_std() const {
_ensure_valid_rap_phi();
return _phi > pi ? _phi-twopi : _phi;}
inline double phi_02pi() const {
_ensure_valid_rap_phi();
return _phi;
}
inline double rap() const {
_ensure_valid_rap_phi();
return _rap;
}
inline double rapidity() const {return rap();} // like CLHEP
double pseudorapidity() const;
double eta() const {return pseudorapidity();}
inline double pt2() const {return _kt2;}
inline double pt() const {return sqrt(_kt2);}
inline double perp2() const {return _kt2;} // like CLHEP
inline double perp() const {return sqrt(_kt2);} // like CLHEP
inline double kt2() const {return _kt2;} // for bkwds compatibility
inline double m2() const {return (_E+_pz)*(_E-_pz)-_kt2;}
inline double m() const;
inline double mperp2() const {return (_E+_pz)*(_E-_pz);}
inline double mperp() const {return sqrt(std::abs(mperp2()));}
inline double mt2() const {return (_E+_pz)*(_E-_pz);}
inline double mt() const {return sqrt(std::abs(mperp2()));}
inline double modp2() const {return _kt2+_pz*_pz;}
inline double modp() const {return sqrt(_kt2+_pz*_pz);}
inline double Et() const {return (_kt2==0) ? 0.0 : _E/sqrt(1.0+_pz*_pz/_kt2);}
inline double Et2() const {return (_kt2==0) ? 0.0 : _E*_E/(1.0+_pz*_pz/_kt2);}
double operator () (int i) const ;
inline double operator [] (int i) const { return (*this)(i); }; // this too
double kt_distance(const PseudoJet & other) const;
double plain_distance(const PseudoJet & other) const;
inline double squared_distance(const PseudoJet & other) const {
return plain_distance(other);}
inline double delta_R(const PseudoJet & other) const {
return sqrt(squared_distance(other));
}
double delta_phi_to(const PseudoJet & other) const;
inline double beam_distance() const {return _kt2;}
std::valarray<double> four_mom() const;
enum { X=0, Y=1, Z=2, T=3, NUM_COORDINATES=4, SIZE=NUM_COORDINATES };
PseudoJet & boost(const PseudoJet & prest);
PseudoJet & unboost(const PseudoJet & prest);
void operator*=(double);
void operator/=(double);
void operator+=(const PseudoJet &);
void operator-=(const PseudoJet &);
inline void reset(double px, double py, double pz, double E);
inline void reset(const PseudoJet & psjet) {
(*this) = psjet;
}
template <class L> inline void reset(const L & some_four_vector) {
const PseudoJet * pj = fjcore::cast_if_derived<const PseudoJet>(&some_four_vector);
if (pj){
(*this) = *pj;
} else {
reset(some_four_vector[0], some_four_vector[1],
some_four_vector[2], some_four_vector[3]);
}
}
inline void reset_PtYPhiM(double pt_in, double y_in, double phi_in, double m_in=0.0) {
reset_momentum_PtYPhiM(pt_in, y_in, phi_in, m_in);
_reset_indices();
}
inline void reset_momentum(double px, double py, double pz, double E);
inline void reset_momentum(const PseudoJet & pj);
void reset_momentum_PtYPhiM(double pt, double y, double phi, double m=0.0);
template <class L> inline void reset_momentum(const L & some_four_vector) {
reset_momentum(some_four_vector[0], some_four_vector[1],
some_four_vector[2], some_four_vector[3]);
}
void set_cached_rap_phi(double rap, double phi);
inline int user_index() const {return _user_index;}
inline void set_user_index(const int index) {_user_index = index;}
class UserInfoBase{
public:
UserInfoBase(){};
virtual ~UserInfoBase(){};
};
class InexistentUserInfo : public Error {
public:
InexistentUserInfo();
};
void set_user_info(UserInfoBase * user_info_in) {
_user_info.reset(user_info_in);
}
template<class L>
const L & user_info() const{
if (_user_info.get() == 0) throw InexistentUserInfo();
return dynamic_cast<const L &>(* _user_info.get());
}
bool has_user_info() const{
return _user_info.get();
}
template<class L>
bool has_user_info() const{
return _user_info.get() && dynamic_cast<const L *>(_user_info.get());
}
const UserInfoBase * user_info_ptr() const{
if (!_user_info()) return NULL;
return _user_info.get();
}
const SharedPtr<UserInfoBase> & user_info_shared_ptr() const{
return _user_info;
}
SharedPtr<UserInfoBase> & user_info_shared_ptr(){
return _user_info;
}
std::string description() const;
bool has_associated_cluster_sequence() const;
bool has_associated_cs() const {return has_associated_cluster_sequence();}
bool has_valid_cluster_sequence() const;
bool has_valid_cs() const {return has_valid_cluster_sequence();}
const ClusterSequence* associated_cluster_sequence() const;
const ClusterSequence* associated_cs() const {return associated_cluster_sequence();}
inline const ClusterSequence * validated_cluster_sequence() const {
return validated_cs();
}
const ClusterSequence * validated_cs() const;
void set_structure_shared_ptr(const SharedPtr<PseudoJetStructureBase> &structure);
bool has_structure() const;
const PseudoJetStructureBase* structure_ptr() const;
PseudoJetStructureBase* structure_non_const_ptr();
const PseudoJetStructureBase* validated_structure_ptr() const;
const SharedPtr<PseudoJetStructureBase> & structure_shared_ptr() const;
template<typename StructureType>
const StructureType & structure() const;
template<typename TransformerType>
bool has_structure_of() const;
template<typename TransformerType>
const typename TransformerType::StructureType & structure_of() const;
virtual bool has_partner(PseudoJet &partner) const;
virtual bool has_child(PseudoJet &child) const;
virtual bool has_parents(PseudoJet &parent1, PseudoJet &parent2) const;
virtual bool contains(const PseudoJet &constituent) const;
virtual bool is_inside(const PseudoJet &jet) const;
virtual bool has_constituents() const;
virtual std::vector<PseudoJet> constituents() const;
virtual bool has_exclusive_subjets() const;
std::vector<PseudoJet> exclusive_subjets (const double & dcut) const;
int n_exclusive_subjets(const double & dcut) const;
std::vector<PseudoJet> exclusive_subjets (int nsub) const;
std::vector<PseudoJet> exclusive_subjets_up_to (int nsub) const;
double exclusive_subdmerge(int nsub) const;
double exclusive_subdmerge_max(int nsub) const;
virtual bool has_pieces() const;
virtual std::vector<PseudoJet> pieces() const;
inline int cluster_hist_index() const {return _cluster_hist_index;}
inline void set_cluster_hist_index(const int index) {_cluster_hist_index = index;}
inline int cluster_sequence_history_index() const {
return cluster_hist_index();}
inline void set_cluster_sequence_history_index(const int index) {
set_cluster_hist_index(index);}
protected:
SharedPtr<PseudoJetStructureBase> _structure;
SharedPtr<UserInfoBase> _user_info;
private:
double _px,_py,_pz,_E;
mutable double _phi, _rap;
double _kt2;
int _cluster_hist_index, _user_index;
void _finish_init();
void _reset_indices();
inline void _ensure_valid_rap_phi() const {
if (_phi == pseudojet_invalid_phi) _set_rap_phi();
}
void _set_rap_phi() const;
};
PseudoJet operator+(const PseudoJet &, const PseudoJet &);
PseudoJet operator-(const PseudoJet &, const PseudoJet &);
PseudoJet operator*(double, const PseudoJet &);
PseudoJet operator*(const PseudoJet &, double);
PseudoJet operator/(const PseudoJet &, double);
bool operator==(const PseudoJet &, const PseudoJet &);
inline bool operator!=(const PseudoJet & a, const PseudoJet & b) {return !(a==b);}
bool operator==(const PseudoJet & jet, const double val);
inline bool operator!=(const PseudoJet & a, const double & val) {return !(a==val);}
inline double dot_product(const PseudoJet & a, const PseudoJet & b) {
return a.E()*b.E() - a.px()*b.px() - a.py()*b.py() - a.pz()*b.pz();
}
bool have_same_momentum(const PseudoJet &, const PseudoJet &);
PseudoJet PtYPhiM(double pt, double y, double phi, double m = 0.0);
std::vector<PseudoJet> sorted_by_pt(const std::vector<PseudoJet> & jets);
std::vector<PseudoJet> sorted_by_rapidity(const std::vector<PseudoJet> & jets);
std::vector<PseudoJet> sorted_by_E(const std::vector<PseudoJet> & jets);
std::vector<PseudoJet> sorted_by_pz(const std::vector<PseudoJet> & jets);
void sort_indices(std::vector<int> & indices,
const std::vector<double> & values);
template<class T> std::vector<T> objects_sorted_by_values(const std::vector<T> & objects,
const std::vector<double> & values);
class IndexedSortHelper {
public:
inline IndexedSortHelper (const std::vector<double> * reference_values) {
_ref_values = reference_values;
};
inline int operator() (const int & i1, const int & i2) const {
return (*_ref_values)[i1] < (*_ref_values)[i2];
};
private:
const std::vector<double> * _ref_values;
};
template <class L> inline PseudoJet::PseudoJet(const L & some_four_vector) {
reset(some_four_vector);
}
inline void PseudoJet::_reset_indices() {
set_cluster_hist_index(-1);
set_user_index(-1);
_structure.reset();
_user_info.reset();
}
inline double PseudoJet::m() const {
double mm = m2();
return mm < 0.0 ? -std::sqrt(-mm) : std::sqrt(mm);
}
inline void PseudoJet::reset(double px_in, double py_in, double pz_in, double E_in) {
_px = px_in;
_py = py_in;
_pz = pz_in;
_E = E_in;
_finish_init();
_reset_indices();
}
inline void PseudoJet::reset_momentum(double px_in, double py_in, double pz_in, double E_in) {
_px = px_in;
_py = py_in;
_pz = pz_in;
_E = E_in;
_finish_init();
}
inline void PseudoJet::reset_momentum(const PseudoJet & pj) {
_px = pj._px ;
_py = pj._py ;
_pz = pj._pz ;
_E = pj._E ;
_phi = pj._phi;
_rap = pj._rap;
_kt2 = pj._kt2;
}
template<typename StructureType>
const StructureType & PseudoJet::structure() const{
return dynamic_cast<const StructureType &>(* validated_structure_ptr());
}
template<typename TransformerType>
bool PseudoJet::has_structure_of() const{
if (!_structure()) return false;
return dynamic_cast<const typename TransformerType::StructureType *>(_structure.get()) != 0;
}
template<typename TransformerType>
const typename TransformerType::StructureType & PseudoJet::structure_of() const{
if (!_structure())
throw Error("Trying to access the structure of a PseudoJet without an associated structure");
return dynamic_cast<const typename TransformerType::StructureType &>(*_structure);
}
PseudoJet join(const std::vector<PseudoJet> & pieces);
PseudoJet join(const PseudoJet & j1);
PseudoJet join(const PseudoJet & j1, const PseudoJet & j2);
PseudoJet join(const PseudoJet & j1, const PseudoJet & j2, const PseudoJet & j3);
PseudoJet join(const PseudoJet & j1, const PseudoJet & j2, const PseudoJet & j3, const PseudoJet & j4);
FJCORE_END_NAMESPACE
#endif // __FJCORE_PSEUDOJET_HH__
#ifndef __FJCORE_FUNCTION_OF_PSEUDOJET_HH__
#define __FJCORE_FUNCTION_OF_PSEUDOJET_HH__
FJCORE_BEGIN_NAMESPACE
template<typename TOut>
class FunctionOfPseudoJet{
public:
FunctionOfPseudoJet(){}
FunctionOfPseudoJet(const TOut &constant_value);
virtual ~FunctionOfPseudoJet(){}
virtual std::string description() const{ return "";}
virtual TOut result(const PseudoJet &pj) const = 0;
TOut operator()(const PseudoJet &pj) const { return result(pj);}
std::vector<TOut> operator()(const std::vector<PseudoJet> &pjs) const {
std::vector<TOut> res(pjs.size());
for (unsigned int i=0; i<pjs.size(); i++)
res[i] = result(pjs[i]);
return res;
}
};
FJCORE_END_NAMESPACE
#endif // __FJCORE_FUNCTION_OF_PSEUDOJET_HH__
#ifndef __FJCORE_SELECTOR_HH__
#define __FJCORE_SELECTOR_HH__
#include <limits>
#include <cmath>
FJCORE_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
class Selector;
class SelectorWorker {
public:
virtual ~SelectorWorker() {}
virtual bool pass(const PseudoJet & jet) const = 0;
virtual void terminator(std::vector<const PseudoJet *> & jets) const {
for (unsigned i = 0; i < jets.size(); i++) {
if (jets[i] && !pass(*jets[i])) jets[i] = NULL;
}
}
virtual bool applies_jet_by_jet() const {return true;}
virtual std::string description() const {return "missing description";}
virtual bool takes_reference() const { return false;}
virtual void set_reference(const PseudoJet & /*reference*/){
throw Error("set_reference(...) cannot be used for a selector worker that does not take a reference");
}
virtual SelectorWorker* copy(){
throw Error("this SelectorWorker has nothing to copy");
}
virtual void get_rapidity_extent(double & rapmin, double & rapmax) const {
rapmax = std::numeric_limits<double>::infinity();
rapmin = -rapmax;
}
virtual bool is_geometric() const { return false;}
virtual bool has_finite_area() const;
virtual bool has_known_area() const { return false;}
virtual double known_area() const{
throw Error("this selector has no computable area");
}
};
class Selector{
public:
Selector() {}
Selector(SelectorWorker * worker_in) {_worker.reset(worker_in);}
virtual ~Selector(){}
bool pass(const PseudoJet & jet) const {
if (!validated_worker()->applies_jet_by_jet()) {
throw Error("Cannot apply this selector to an individual jet");
}
return _worker->pass(jet);
}
bool operator()(const PseudoJet & jet) const {
return pass(jet);
}
unsigned int count(const std::vector<PseudoJet> & jets) const;
void sift(const std::vector<PseudoJet> & jets,
std::vector<PseudoJet> & jets_that_pass,
std::vector<PseudoJet> & jets_that_fail) const;
bool applies_jet_by_jet() const {
return validated_worker()->applies_jet_by_jet();
}
std::vector<PseudoJet> operator()(const std::vector<PseudoJet> & jets) const;
virtual void nullify_non_selected(std::vector<const PseudoJet *> & jets) const {
validated_worker()->terminator(jets);
}
void get_rapidity_extent(double &rapmin, double &rapmax) const {
return validated_worker()->get_rapidity_extent(rapmin, rapmax);
}
std::string description() const {
return validated_worker()->description();
}
bool is_geometric() const{
return validated_worker()->is_geometric();
}
bool has_finite_area() const{
return validated_worker()->has_finite_area();
}
const SharedPtr<SelectorWorker> & worker() const {return _worker;}
const SelectorWorker* validated_worker() const {
const SelectorWorker* worker_ptr = _worker.get();
if (worker_ptr == 0) throw InvalidWorker();
return worker_ptr;
}
bool takes_reference() const {
return validated_worker()->takes_reference();
}
const Selector & set_reference(const PseudoJet &reference){
if (! validated_worker()->takes_reference()){
return *this;
}
_copy_worker_if_needed();
_worker->set_reference(reference);
return *this;
}
class InvalidWorker : public Error {
public:
InvalidWorker() : Error("Attempt to use Selector with no valid underlying worker") {}
};
class InvalidArea : public Error {
public:
InvalidArea() : Error("Attempt to obtain area from Selector for which this is not meaningful") {}
};
Selector & operator &=(const Selector & b);
Selector & operator |=(const Selector & b);
protected:
void _copy_worker_if_needed(){
if (_worker.unique()) return;
_worker.reset(_worker->copy());
}
private:
SharedPtr<SelectorWorker> _worker; ///< the underlying worker
};
Selector SelectorIdentity();
Selector operator!(const Selector & s);
Selector operator ||(const Selector & s1, const Selector & s2);
Selector operator&&(const Selector & s1, const Selector & s2);
Selector operator*(const Selector & s1, const Selector & s2);
Selector SelectorPtMin(double ptmin); ///< select objects with pt >= ptmin
Selector SelectorPtMax(double ptmax); ///< select objects with pt <= ptmax
Selector SelectorPtRange(double ptmin, double ptmax); ///< select objects with ptmin <= pt <= ptmax
Selector SelectorEtMin(double Etmin); ///< select objects with Et >= Etmin
Selector SelectorEtMax(double Etmax); ///< select objects with Et <= Etmax
Selector SelectorEtRange(double Etmin, double Etmax); ///< select objects with Etmin <= Et <= Etmax
Selector SelectorEMin(double Emin); ///< select objects with E >= Emin
Selector SelectorEMax(double Emax); ///< select objects with E <= Emax
Selector SelectorERange(double Emin, double Emax); ///< select objects with Emin <= E <= Emax
Selector SelectorMassMin(double Mmin); ///< select objects with Mass >= Mmin
Selector SelectorMassMax(double Mmax); ///< select objects with Mass <= Mmax
Selector SelectorMassRange(double Mmin, double Mmax); ///< select objects with Mmin <= Mass <= Mmax
Selector SelectorRapMin(double rapmin); ///< select objects with rap >= rapmin
Selector SelectorRapMax(double rapmax); ///< select objects with rap <= rapmax
Selector SelectorRapRange(double rapmin, double rapmax); ///< select objects with rapmin <= rap <= rapmax
Selector SelectorAbsRapMin(double absrapmin); ///< select objects with |rap| >= absrapmin
Selector SelectorAbsRapMax(double absrapmax); ///< select objects with |rap| <= absrapmax
Selector SelectorAbsRapRange(double absrapmin, double absrapmax); ///< select objects with absrapmin <= |rap| <= absrapmax
Selector SelectorEtaMin(double etamin); ///< select objects with eta >= etamin
Selector SelectorEtaMax(double etamax); ///< select objects with eta <= etamax
Selector SelectorEtaRange(double etamin, double etamax); ///< select objects with etamin <= eta <= etamax
Selector SelectorAbsEtaMin(double absetamin); ///< select objects with |eta| >= absetamin
Selector SelectorAbsEtaMax(double absetamax); ///< select objects with |eta| <= absetamax
Selector SelectorAbsEtaRange(double absetamin, double absetamax); ///< select objects with absetamin <= |eta| <= absetamax
Selector SelectorPhiRange(double phimin, double phimax); ///< select objects with phimin <= phi <= phimax
Selector SelectorRapPhiRange(double rapmin, double rapmax, double phimin, double phimax);
Selector SelectorNHardest(unsigned int n);
Selector SelectorCircle(const double & radius);
Selector SelectorDoughnut(const double & radius_in, const double & radius_out);
Selector SelectorStrip(const double & half_width);
Selector SelectorRectangle(const double & half_rap_width, const double & half_phi_width);
Selector SelectorPtFractionMin(double fraction);
Selector SelectorIsZero();
FJCORE_END_NAMESPACE // defined in fastjet/internal/base.hh
#endif // __FJCORE_SELECTOR_HH__
#ifndef __FJCORE_JETDEFINITION_HH__
#define __FJCORE_JETDEFINITION_HH__
#include<cassert>
#include<string>
#include<memory>
FJCORE_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
std::string fastjet_version_string();
enum Strategy {
N2MinHeapTiled = -4,
N2Tiled = -3,
N2PoorTiled = -2,
N2Plain = -1,
N3Dumb = 0,
Best = 1,
NlnN = 2,
NlnN3pi = 3,
NlnN4pi = 4,
NlnNCam4pi = 14,
NlnNCam2pi2R = 13,
NlnNCam = 12, // 2piMultD
plugin_strategy = 999
};
enum JetAlgorithm {
kt_algorithm=0,
cambridge_algorithm=1,
antikt_algorithm=2,
genkt_algorithm=3,
cambridge_for_passive_algorithm=11,
genkt_for_passive_algorithm=13,
ee_kt_algorithm=50,
ee_genkt_algorithm=53,
plugin_algorithm = 99,
undefined_jet_algorithm = 999
};
typedef JetAlgorithm JetFinder;
const JetAlgorithm aachen_algorithm = cambridge_algorithm;
const JetAlgorithm cambridge_aachen_algorithm = cambridge_algorithm;
enum RecombinationScheme {
E_scheme=0,
pt_scheme=1,
pt2_scheme=2,
Et_scheme=3,
Et2_scheme=4,
BIpt_scheme=5,
BIpt2_scheme=6,
external_scheme = 99
};
class ClusterSequence;
class JetDefinition {
public:
class Plugin;
class Recombiner;
JetDefinition(JetAlgorithm jet_algorithm_in,
double R_in,
RecombinationScheme recomb_scheme_in = E_scheme,
Strategy strategy_in = Best) {
*this = JetDefinition(jet_algorithm_in, R_in, strategy_in, recomb_scheme_in, 1);
}
JetDefinition(JetAlgorithm jet_algorithm_in,
RecombinationScheme recomb_scheme_in = E_scheme,
Strategy strategy_in = Best) {
double dummyR = 0.0;
*this = JetDefinition(jet_algorithm_in, dummyR, strategy_in, recomb_scheme_in, 0);
}
JetDefinition(JetAlgorithm jet_algorithm_in,
double R_in,
double xtra_param_in,
RecombinationScheme recomb_scheme_in = E_scheme,
Strategy strategy_in = Best) {
*this = JetDefinition(jet_algorithm_in, R_in, strategy_in, recomb_scheme_in, 2);
set_extra_param(xtra_param_in);
}
JetDefinition(JetAlgorithm jet_algorithm_in,
double R_in,
const Recombiner * recombiner_in,
Strategy strategy_in = Best) {
*this = JetDefinition(jet_algorithm_in, R_in, external_scheme, strategy_in);
_recombiner = recombiner_in;
}
JetDefinition(JetAlgorithm jet_algorithm_in,
const Recombiner * recombiner_in,
Strategy strategy_in = Best) {
*this = JetDefinition(jet_algorithm_in, external_scheme, strategy_in);
_recombiner = recombiner_in;
}
JetDefinition(JetAlgorithm jet_algorithm_in,
double R_in,
double xtra_param_in,
const Recombiner * recombiner_in,
Strategy strategy_in = Best) {
*this = JetDefinition(jet_algorithm_in, R_in, external_scheme, strategy_in);
_recombiner = recombiner_in;
set_extra_param(xtra_param_in);
}
JetDefinition() {
*this = JetDefinition(undefined_jet_algorithm, 1.0);
}
JetDefinition(const Plugin * plugin_in) {
_plugin = plugin_in;
_strategy = plugin_strategy;
_Rparam = _plugin->R();
_jet_algorithm = plugin_algorithm;
set_recombination_scheme(E_scheme);
}
JetDefinition(JetAlgorithm jet_algorithm_in,
double R_in,
Strategy strategy_in,
RecombinationScheme recomb_scheme_in = E_scheme,
int nparameters_in = 1);
static const double max_allowable_R; //= 1000.0;
void set_recombination_scheme(RecombinationScheme);
void set_recombiner(const Recombiner * recomb) {
if (_recombiner_shared()) _recombiner_shared.reset(recomb);
_recombiner = recomb;
_default_recombiner = DefaultRecombiner(external_scheme);
}
void delete_recombiner_when_unused();
const Plugin * plugin() const {return _plugin;};
void delete_plugin_when_unused();
JetAlgorithm jet_algorithm () const {return _jet_algorithm ;}
JetAlgorithm jet_finder () const {return _jet_algorithm ;}
double R () const {return _Rparam ;}
double extra_param () const {return _extra_param ;}
Strategy strategy () const {return _strategy ;}
RecombinationScheme recombination_scheme() const {
return _default_recombiner.scheme();}
void set_jet_algorithm(JetAlgorithm njf) {_jet_algorithm = njf;}
void set_jet_finder(JetAlgorithm njf) {_jet_algorithm = njf;}
void set_extra_param(double xtra_param) {_extra_param = xtra_param;}
const Recombiner * recombiner() const {
return _recombiner == 0 ? & _default_recombiner : _recombiner;}
bool has_same_recombiner(const JetDefinition &other_jd) const;
std::string description() const;
public:
class Recombiner {
public:
virtual std::string description() const = 0;
virtual void recombine(const PseudoJet & pa, const PseudoJet & pb,
PseudoJet & pab) const = 0;
virtual void preprocess(PseudoJet & ) const {};
virtual ~Recombiner() {};
inline void plus_equal(PseudoJet & pa, const PseudoJet & pb) const {
PseudoJet pres;
recombine(pa,pb,pres);
pa = pres;
}
};
class DefaultRecombiner : public Recombiner {
public:
DefaultRecombiner(RecombinationScheme recomb_scheme = E_scheme) :
_recomb_scheme(recomb_scheme) {}
virtual std::string description() const;
virtual void recombine(const PseudoJet & pa, const PseudoJet & pb,
PseudoJet & pab) const;
virtual void preprocess(PseudoJet & p) const;
RecombinationScheme scheme() const {return _recomb_scheme;}
private:
RecombinationScheme _recomb_scheme;
};
class Plugin{
public:
virtual std::string description() const = 0;
virtual void run_clustering(ClusterSequence &) const = 0;
virtual double R() const = 0;
virtual bool supports_ghosted_passive_areas() const {return false;}
virtual void set_ghost_separation_scale(double scale) const;
virtual double ghost_separation_scale() const {return 0.0;}
virtual bool exclusive_sequence_meaningful() const {return false;}
virtual ~Plugin() {};
};
private:
JetAlgorithm _jet_algorithm;
double _Rparam;
double _extra_param ; ///< parameter whose meaning varies according to context
Strategy _strategy ;
const Plugin * _plugin;
SharedPtr<const Plugin> _plugin_shared;
DefaultRecombiner _default_recombiner;
const Recombiner * _recombiner;
SharedPtr<const Recombiner> _recombiner_shared;
};
PseudoJet join(const std::vector<PseudoJet> & pieces, const JetDefinition::Recombiner & recombiner);
PseudoJet join(const PseudoJet & j1,
const JetDefinition::Recombiner & recombiner);
PseudoJet join(const PseudoJet & j1, const PseudoJet & j2,
const JetDefinition::Recombiner & recombiner);
PseudoJet join(const PseudoJet & j1, const PseudoJet & j2, const PseudoJet & j3,
const JetDefinition::Recombiner & recombiner);
PseudoJet join(const PseudoJet & j1, const PseudoJet & j2, const PseudoJet & j3, const PseudoJet & j4,
const JetDefinition::Recombiner & recombiner);
FJCORE_END_NAMESPACE
#endif // __FJCORE_JETDEFINITION_HH__
#ifndef __FJCORE_COMPOSITEJET_STRUCTURE_HH__
#define __FJCORE_COMPOSITEJET_STRUCTURE_HH__
FJCORE_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
class CompositeJetStructure : public PseudoJetStructureBase{
public:
CompositeJetStructure() : _area_4vector_ptr(0){};
CompositeJetStructure(const std::vector<PseudoJet> & initial_pieces,
const JetDefinition::Recombiner * recombiner = 0);
virtual ~CompositeJetStructure(){
if (_area_4vector_ptr) delete _area_4vector_ptr;
};
virtual std::string description() const;
virtual bool has_constituents() const;
virtual std::vector<PseudoJet> constituents(const PseudoJet &jet) const;
virtual bool has_pieces(const PseudoJet & /*jet*/) const {return true;}
virtual std::vector<PseudoJet> pieces(const PseudoJet &jet) const;
protected:
std::vector<PseudoJet> _pieces; ///< the pieces building the jet
PseudoJet * _area_4vector_ptr; ///< pointer to the 4-vector jet area
};
template<typename T> PseudoJet join(const std::vector<PseudoJet> & pieces){
PseudoJet result(0.0,0.0,0.0,0.0);
for (unsigned int i=0; i<pieces.size(); i++){
const PseudoJet it = pieces[i];
result += it;
}
T *cj_struct = new T(pieces);
result.set_structure_shared_ptr(SharedPtr<PseudoJetStructureBase>(cj_struct));
return result;
}
template<typename T> PseudoJet join(const PseudoJet & j1){
return join<T>(std::vector<PseudoJet>(1,j1));
}
template<typename T> PseudoJet join(const PseudoJet & j1, const PseudoJet & j2){
std::vector<PseudoJet> pieces;
pieces.push_back(j1);
pieces.push_back(j2);
return join<T>(pieces);
}
template<typename T> PseudoJet join(const PseudoJet & j1, const PseudoJet & j2,
const PseudoJet & j3){
std::vector<PseudoJet> pieces;
pieces.push_back(j1);
pieces.push_back(j2);
pieces.push_back(j3);
return join<T>(pieces);
}
template<typename T> PseudoJet join(const PseudoJet & j1, const PseudoJet & j2,
const PseudoJet & j3, const PseudoJet & j4){
std::vector<PseudoJet> pieces;
pieces.push_back(j1);
pieces.push_back(j2);
pieces.push_back(j3);
pieces.push_back(j4);
return join<T>(pieces);
}
template<typename T> PseudoJet join(const std::vector<PseudoJet> & pieces,
const JetDefinition::Recombiner & recombiner){
PseudoJet result;
if (pieces.size()>0){
result = pieces[0];
for (unsigned int i=1; i<pieces.size(); i++){
recombiner.plus_equal(result, pieces[i]);
}
}
T *cj_struct = new T(pieces, &recombiner);
result.set_structure_shared_ptr(SharedPtr<PseudoJetStructureBase>(cj_struct));
return result;
}
template<typename T> PseudoJet join(const PseudoJet & j1,
const JetDefinition::Recombiner & recombiner){
return join<T>(std::vector<PseudoJet>(1,j1), recombiner);
}
template<typename T> PseudoJet join(const PseudoJet & j1, const PseudoJet & j2,
const JetDefinition::Recombiner & recombiner){
std::vector<PseudoJet> pieces;
pieces.push_back(j1);
pieces.push_back(j2);
return join<T>(pieces, recombiner);
}
template<typename T> PseudoJet join(const PseudoJet & j1, const PseudoJet & j2,
const PseudoJet & j3,
const JetDefinition::Recombiner & recombiner){
std::vector<PseudoJet> pieces;
pieces.push_back(j1);
pieces.push_back(j2);
pieces.push_back(j3);
return join<T>(pieces, recombiner);
}
template<typename T> PseudoJet join(const PseudoJet & j1, const PseudoJet & j2,
const PseudoJet & j3, const PseudoJet & j4,
const JetDefinition::Recombiner & recombiner){
std::vector<PseudoJet> pieces;
pieces.push_back(j1);
pieces.push_back(j2);
pieces.push_back(j3);
pieces.push_back(j4);
return join<T>(pieces, recombiner);
}
FJCORE_END_NAMESPACE // defined in fastjet/internal/base.hh
#endif // __FJCORE_MERGEDJET_STRUCTURE_HH__
#ifndef __FJCORE_CLUSTER_SEQUENCE_STRUCTURE_HH__
#define __FJCORE_CLUSTER_SEQUENCE_STRUCTURE_HH__
#include <vector>
FJCORE_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
class ClusterSequenceStructure : public PseudoJetStructureBase{
public:
ClusterSequenceStructure() : _associated_cs(NULL){}
ClusterSequenceStructure(const ClusterSequence *cs){
set_associated_cs(cs);
};
virtual ~ClusterSequenceStructure();
virtual std::string description() const{ return "PseudoJet with an associated ClusterSequence"; }
virtual bool has_associated_cluster_sequence() const{ return true;}
virtual const ClusterSequence* associated_cluster_sequence() const;
virtual bool has_valid_cluster_sequence() const;
virtual const ClusterSequence * validated_cs() const;
virtual void set_associated_cs(const ClusterSequence * new_cs){
_associated_cs = new_cs;
}
virtual bool has_partner(const PseudoJet &reference, PseudoJet &partner) const;
virtual bool has_child(const PseudoJet &reference, PseudoJet &child) const;
virtual bool has_parents(const PseudoJet &reference, PseudoJet &parent1, PseudoJet &parent2) const;
virtual bool object_in_jet(const PseudoJet &reference, const PseudoJet &jet) const;
virtual bool has_constituents() const;
virtual std::vector<PseudoJet> constituents(const PseudoJet &reference) const;
virtual bool has_exclusive_subjets() const;
virtual std::vector<PseudoJet> exclusive_subjets(const PseudoJet &reference, const double & dcut) const;
virtual int n_exclusive_subjets(const PseudoJet &reference, const double & dcut) const;
virtual std::vector<PseudoJet> exclusive_subjets_up_to (const PseudoJet &reference, int nsub) const;
virtual double exclusive_subdmerge(const PseudoJet &reference, int nsub) const;
virtual double exclusive_subdmerge_max(const PseudoJet &reference, int nsub) const;
virtual bool has_pieces(const PseudoJet &reference) const;
virtual std::vector<PseudoJet> pieces(const PseudoJet &reference) const;
protected:
const ClusterSequence *_associated_cs;
};
FJCORE_END_NAMESPACE
#endif // __FJCORE_CLUSTER_SEQUENCE_STRUCTURE_HH__
#ifndef __FJCORE_CLUSTERSEQUENCE_HH__
#define __FJCORE_CLUSTERSEQUENCE_HH__
#include<vector>
#include<map>
#include<memory>
#include<cassert>
#include<iostream>
#include<string>
#include<set>
#include<cmath> // needed to get double std::abs(double)
FJCORE_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
class ClusterSequenceStructure;
class DynamicNearestNeighbours;
class ClusterSequence {
public:
ClusterSequence () : _deletes_self_when_unused(false) {}
template<class L> ClusterSequence (
const std::vector<L> & pseudojets,
const JetDefinition & jet_def,
const bool & writeout_combinations = false);
ClusterSequence (const ClusterSequence & cs) : _deletes_self_when_unused(false) {
transfer_from_sequence(cs);
}
virtual ~ClusterSequence (); //{}
std::vector<PseudoJet> inclusive_jets (const double & ptmin = 0.0) const;
int n_exclusive_jets (const double & dcut) const;
std::vector<PseudoJet> exclusive_jets (const double & dcut) const;
std::vector<PseudoJet> exclusive_jets (const int & njets) const;
std::vector<PseudoJet> exclusive_jets_up_to (const int & njets) const;
double exclusive_dmerge (const int & njets) const;
double exclusive_dmerge_max (const int & njets) const;
double exclusive_ymerge (int njets) const {return exclusive_dmerge(njets) / Q2();}
double exclusive_ymerge_max (int njets) const {return exclusive_dmerge_max(njets)/Q2();}
int n_exclusive_jets_ycut (double ycut) const {return n_exclusive_jets(ycut*Q2());}
std::vector<PseudoJet> exclusive_jets_ycut (double ycut) const {
int njets = n_exclusive_jets_ycut(ycut);
return exclusive_jets(njets);
}
std::vector<PseudoJet> exclusive_subjets (const PseudoJet & jet,
const double & dcut) const;
int n_exclusive_subjets(const PseudoJet & jet,
const double & dcut) const;
std::vector<PseudoJet> exclusive_subjets (const PseudoJet & jet,
int nsub) const;
std::vector<PseudoJet> exclusive_subjets_up_to (const PseudoJet & jet,
int nsub) const;
double exclusive_subdmerge(const PseudoJet & jet, int nsub) const;
double exclusive_subdmerge_max(const PseudoJet & jet, int nsub) const;
double Q() const {return _Qtot;}
double Q2() const {return _Qtot*_Qtot;}
bool object_in_jet(const PseudoJet & object, const PseudoJet & jet) const;
bool has_parents(const PseudoJet & jet, PseudoJet & parent1,
PseudoJet & parent2) const;
bool has_child(const PseudoJet & jet, PseudoJet & child) const;
bool has_child(const PseudoJet & jet, const PseudoJet * & childp) const;
bool has_partner(const PseudoJet & jet, PseudoJet & partner) const;
std::vector<PseudoJet> constituents (const PseudoJet & jet) const;
void print_jets_for_root(const std::vector<PseudoJet> & jets,
std::ostream & ostr = std::cout) const;
void print_jets_for_root(const std::vector<PseudoJet> & jets,
const std::string & filename,
const std::string & comment = "") const;
void add_constituents (const PseudoJet & jet,
std::vector<PseudoJet> & subjet_vector) const;
inline Strategy strategy_used () const {return _strategy;}
std::string strategy_string () const {return strategy_string(_strategy);}
std::string strategy_string (Strategy strategy_in) const;
const JetDefinition & jet_def() const {return _jet_def;}
void delete_self_when_unused();
bool will_delete_self_when_unused() const {return _deletes_self_when_unused;}
void signal_imminent_self_deletion() const;
double jet_scale_for_algorithm(const PseudoJet & jet) const;
void plugin_record_ij_recombination(int jet_i, int jet_j, double dij,
int & newjet_k) {
assert(plugin_activated());
_do_ij_recombination_step(jet_i, jet_j, dij, newjet_k);
}
void plugin_record_ij_recombination(int jet_i, int jet_j, double dij,
const PseudoJet & newjet,
int & newjet_k);
void plugin_record_iB_recombination(int jet_i, double diB) {
assert(plugin_activated());
_do_iB_recombination_step(jet_i, diB);
}
class Extras {
public:
virtual ~Extras() {}
virtual std::string description() const {return "This is a dummy extras class that contains no extra information! Derive from it if you want to use it to provide extra information from a plugin jet finder";}
};
inline void plugin_associate_extras(std::auto_ptr<Extras> extras_in) {
_extras.reset(extras_in.release());
}
inline bool plugin_activated() const {return _plugin_activated;}
const Extras * extras() const {return _extras.get();}
template<class GBJ> void plugin_simple_N2_cluster () {
assert(plugin_activated());
_simple_N2_cluster<GBJ>();
}
public:
struct history_element{
int parent1; /// index in _history where first parent of this jet
int parent2; /// index in _history where second parent of this jet
int child; /// index in _history where the current jet is
/// recombined with another jet to form its child. It
/// is Invalid if this jet does not further
/// recombine.
int jetp_index; /// index in the _jets vector where we will find the
double dij; /// the distance corresponding to the recombination
/// at this stage of the clustering.
double max_dij_so_far; /// the largest recombination distance seen
/// so far in the clustering history.
};
enum JetType {Invalid=-3, InexistentParent = -2, BeamJet = -1};
const std::vector<PseudoJet> & jets() const;
const std::vector<history_element> & history() const;
unsigned int n_particles() const;
std::vector<int> particle_jet_indices(const std::vector<PseudoJet> &) const;
std::vector<int> unique_history_order() const;
std::vector<PseudoJet> unclustered_particles() const;
std::vector<PseudoJet> childless_pseudojets() const;
bool contains(const PseudoJet & object) const;
void transfer_from_sequence(const ClusterSequence & from_seq,
const FunctionOfPseudoJet<PseudoJet> * action_on_jets = 0);
const SharedPtr<PseudoJetStructureBase> & structure_shared_ptr() const{
return _structure_shared_ptr;
}
typedef ClusterSequenceStructure StructureType;
static void print_banner();
static void set_fastjet_banner_stream(std::ostream * ostr) {_fastjet_banner_ostr = ostr;}
static std::ostream * fastjet_banner_stream() {return _fastjet_banner_ostr;}
private:
static std::ostream * _fastjet_banner_ostr;
protected:
JetDefinition _jet_def;
template<class L> void _transfer_input_jets(
const std::vector<L> & pseudojets);
void _initialise_and_run (const JetDefinition & jet_def,
const bool & writeout_combinations);
void _initialise_and_run_no_decant();
void _decant_options(const JetDefinition & jet_def,
const bool & writeout_combinations);
void _decant_options_partial();
void _fill_initial_history();
void _do_ij_recombination_step(const int & jet_i, const int & jet_j,
const double & dij, int & newjet_k);
void _do_iB_recombination_step(const int & jet_i, const double & diB);
void _set_structure_shared_ptr(PseudoJet & j);
void _update_structure_use_count();
std::vector<PseudoJet> _jets;
std::vector<history_element> _history;
void get_subhist_set(std::set<const history_element*> & subhist,
const PseudoJet & jet, double dcut, int maxjet) const;
bool _writeout_combinations;
int _initial_n;
double _Rparam, _R2, _invR2;
double _Qtot;
Strategy _strategy;
JetAlgorithm _jet_algorithm;
SharedPtr<PseudoJetStructureBase> _structure_shared_ptr; //< will actually be of type ClusterSequenceStructure
int _structure_use_count_after_construction; //< info of use when CS handles its own memory
mutable bool _deletes_self_when_unused;
private:
bool _plugin_activated;
SharedPtr<Extras> _extras; // things the plugin might want to add
void _really_dumb_cluster ();
void _delaunay_cluster ();
template<class BJ> void _simple_N2_cluster ();
void _tiled_N2_cluster ();
void _faster_tiled_N2_cluster ();
void _minheap_faster_tiled_N2_cluster();
void _CP2DChan_cluster();
void _CP2DChan_cluster_2pi2R ();
void _CP2DChan_cluster_2piMultD ();
void _CP2DChan_limited_cluster(double D);
void _do_Cambridge_inclusive_jets();
void _fast_NsqrtN_cluster();
void _add_step_to_history(const int & step_number, const int & parent1,
const int & parent2, const int & jetp_index,
const double & dij);
void _extract_tree_children(int pos, std::valarray<bool> &,
const std::valarray<int> &, std::vector<int> &) const;
void _extract_tree_parents (int pos, std::valarray<bool> &,
const std::valarray<int> &, std::vector<int> &) const;
typedef std::pair<int,int> TwoVertices;
typedef std::pair<double,TwoVertices> DijEntry;
typedef std::multimap<double,TwoVertices> DistMap;
void _add_ktdistance_to_map(const int & ii,
DistMap & DijMap,
const DynamicNearestNeighbours * DNN);
static bool _first_time;
static int _n_exclusive_warnings;
static LimitedWarning _changed_strategy_warning;
struct BriefJet {
double eta, phi, kt2, NN_dist;
BriefJet * NN;
int _jets_index;
};
class TiledJet {
public:
double eta, phi, kt2, NN_dist;
TiledJet * NN, *previous, * next;
int _jets_index, tile_index, diJ_posn;
inline void label_minheap_update_needed() {diJ_posn = 1;}
inline void label_minheap_update_done() {diJ_posn = 0;}
inline bool minheap_update_needed() const {return diJ_posn==1;}
};
template <class J> void _bj_set_jetinfo( J * const jet,
const int _jets_index) const;
void _bj_remove_from_tiles( TiledJet * const jet) const;
template <class J> double _bj_dist(const J * const jeta,
const J * const jetb) const;
template <class J> double _bj_diJ(const J * const jeta) const;
template <class J> inline J * _bj_of_hindex(
const int hist_index,
J * const head, J * const tail)
const {
J * res;
for(res = head; res<tail; res++) {
if (_jets[res->_jets_index].cluster_hist_index() == hist_index) {break;}
}
return res;
}
template <class J> void _bj_set_NN_nocross(J * const jeta,
J * const head, const J * const tail) const;
template <class J> void _bj_set_NN_crosscheck(J * const jeta,
J * const head, const J * const tail) const;
static const int n_tile_neighbours = 9;
struct Tile {
Tile * begin_tiles[n_tile_neighbours];
Tile ** surrounding_tiles;
Tile ** RH_tiles;
Tile ** end_tiles;
TiledJet * head;
bool tagged;
};
std::vector<Tile> _tiles;
double _tiles_eta_min, _tiles_eta_max;
double _tile_size_eta, _tile_size_phi;
int _n_tiles_phi,_tiles_ieta_min,_tiles_ieta_max;
inline int _tile_index (int ieta, int iphi) const {
return (ieta-_tiles_ieta_min)*_n_tiles_phi
+ (iphi+_n_tiles_phi) % _n_tiles_phi;
}
int _tile_index(const double & eta, const double & phi) const;
void _tj_set_jetinfo ( TiledJet * const jet, const int _jets_index);
void _bj_remove_from_tiles(TiledJet * const jet);
void _initialise_tiles();
void _print_tiles(TiledJet * briefjets ) const;
void _add_neighbours_to_tile_union(const int tile_index,
std::vector<int> & tile_union, int & n_near_tiles) const;
void _add_untagged_neighbours_to_tile_union(const int tile_index,
std::vector<int> & tile_union, int & n_near_tiles);
struct EEBriefJet {
double NN_dist; // obligatorily present
double kt2; // obligatorily present == E^2 in general
EEBriefJet * NN; // must be present too
int _jets_index; // must also be present!
double nx, ny, nz; // our internal storage for fast distance calcs
};
void _simple_N2_cluster_BriefJet();
void _simple_N2_cluster_EEBriefJet();
};
template<class L> void ClusterSequence::_transfer_input_jets(
const std::vector<L> & pseudojets) {
_jets.reserve(pseudojets.size()*2);
for (unsigned int i = 0; i < pseudojets.size(); i++) {
_jets.push_back(pseudojets[i]);}
}
template<class L> ClusterSequence::ClusterSequence (
const std::vector<L> & pseudojets,
const JetDefinition & jet_def_in,
const bool & writeout_combinations) :
_jet_def(jet_def_in), _writeout_combinations(writeout_combinations),
_structure_shared_ptr(new ClusterSequenceStructure(this))
{
_transfer_input_jets(pseudojets);
_decant_options_partial();
_initialise_and_run_no_decant();
}
inline const std::vector<PseudoJet> & ClusterSequence::jets () const {
return _jets;
}
inline const std::vector<ClusterSequence::history_element> & ClusterSequence::history () const {
return _history;
}
inline unsigned int ClusterSequence::n_particles() const {return _initial_n;}
template <class J> inline void ClusterSequence::_bj_set_jetinfo(
J * const jetA, const int _jets_index) const {
jetA->eta = _jets[_jets_index].rap();
jetA->phi = _jets[_jets_index].phi_02pi();
jetA->kt2 = jet_scale_for_algorithm(_jets[_jets_index]);
jetA->_jets_index = _jets_index;
jetA->NN_dist = _R2;
jetA->NN = NULL;
}
template <class J> inline double ClusterSequence::_bj_dist(
const J * const jetA, const J * const jetB) const {
double dphi = std::abs(jetA->phi - jetB->phi);
double deta = (jetA->eta - jetB->eta);
if (dphi > pi) {dphi = twopi - dphi;}
return dphi*dphi + deta*deta;
}
template <class J> inline double ClusterSequence::_bj_diJ(const J * const jet) const {
double kt2 = jet->kt2;
if (jet->NN != NULL) {if (jet->NN->kt2 < kt2) {kt2 = jet->NN->kt2;}}
return jet->NN_dist * kt2;
}
template <class J> inline void ClusterSequence::_bj_set_NN_nocross(
J * const jet, J * const head, const J * const tail) const {
double NN_dist = _R2;
J * NN = NULL;
if (head < jet) {
for (J * jetB = head; jetB != jet; jetB++) {
double dist = _bj_dist(jet,jetB);
if (dist < NN_dist) {
NN_dist = dist;
NN = jetB;
}
}
}
if (tail > jet) {
for (J * jetB = jet+1; jetB != tail; jetB++) {
double dist = _bj_dist(jet,jetB);
if (dist < NN_dist) {
NN_dist = dist;
NN = jetB;
}
}
}
jet->NN = NN;
jet->NN_dist = NN_dist;
}
template <class J> inline void ClusterSequence::_bj_set_NN_crosscheck(J * const jet,
J * const head, const J * const tail) const {
double NN_dist = _R2;
J * NN = NULL;
for (J * jetB = head; jetB != tail; jetB++) {
double dist = _bj_dist(jet,jetB);
if (dist < NN_dist) {
NN_dist = dist;
NN = jetB;
}
if (dist < jetB->NN_dist) {
jetB->NN_dist = dist;
jetB->NN = jet;
}
}
jet->NN = NN;
jet->NN_dist = NN_dist;
}
FJCORE_END_NAMESPACE
#endif // __FJCORE_CLUSTERSEQUENCE_HH__
#ifndef __FJCORE_NNH_HH__
#define __FJCORE_NNH_HH__
FJCORE_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
class _NoInfo {};
template<class I> class NNHInfo {
public:
NNHInfo() : _info(NULL) {}
NNHInfo(I * info) : _info(info) {}
template<class NNBJ> void init_jet(NNBJ * briefjet, const fjcore::PseudoJet & jet, int index) { briefjet->init(jet, index, _info);}
private:
I * _info;
};
template<> class NNHInfo<_NoInfo> {
public:
NNHInfo() {}
NNHInfo(_NoInfo * ) {}
template<class NNBJ> void init_jet(NNBJ * briefjet, const fjcore::PseudoJet & jet, int index) { briefjet->init(jet, index);}
};
template<class BJ, class I = _NoInfo> class NNH : public NNHInfo<I> {
public:
NNH(const std::vector<PseudoJet> & jets) {start(jets);}
NNH(const std::vector<PseudoJet> & jets, I * info) : NNHInfo<I>(info) {start(jets);}
void start(const std::vector<PseudoJet> & jets);
double dij_min(int & iA, int & iB);
void remove_jet(int iA);
void merge_jets(int iA, int iB, const PseudoJet & jet, int jet_index);
~NNH() {
delete[] briefjets;
}
private:
class NNBJ; // forward declaration
void set_NN_crosscheck(NNBJ * jet, NNBJ * begin, NNBJ * end);
void set_NN_nocross (NNBJ * jet, NNBJ * begin, NNBJ * end);
NNBJ * briefjets;
NNBJ * head, * tail;
int n;
std::vector<NNBJ *> where_is;
class NNBJ : public BJ {
public:
void init(const PseudoJet & jet, int index_in) {
BJ::init(jet);
other_init(index_in);
}
void init(const PseudoJet & jet, int index_in, I * info) {
BJ::init(jet, info);
other_init(index_in);
}
void other_init(int index_in) {
_index = index_in;
NN_dist = BJ::beam_distance();
NN = NULL;
}
int index() const {return _index;}
double NN_dist;
NNBJ * NN;
private:
int _index;
};
};
template<class BJ, class I> void NNH<BJ,I>::start(const std::vector<PseudoJet> & jets) {
n = jets.size();
briefjets = new NNBJ[n];
where_is.resize(2*n);
NNBJ * jetA = briefjets;
for (int i = 0; i< n; i++) {
this->init_jet(jetA, jets[i], i);
where_is[i] = jetA;
jetA++; // move on to next entry of briefjets
}
tail = jetA; // a semaphore for the end of briefjets
head = briefjets; // a nicer way of naming start
for (jetA = head + 1; jetA != tail; jetA++) {
set_NN_crosscheck(jetA, head, jetA);
}
}
template<class BJ, class I> double NNH<BJ,I>::dij_min(int & iA, int & iB) {
double diJ_min = briefjets[0].NN_dist;
int diJ_min_jet = 0;
for (int i = 1; i < n; i++) {
if (briefjets[i].NN_dist < diJ_min) {
diJ_min_jet = i;
diJ_min = briefjets[i].NN_dist;
}
}
NNBJ * jetA = & briefjets[diJ_min_jet];
iA = jetA->index();
iB = jetA->NN ? jetA->NN->index() : -1;
return diJ_min;
}
template<class BJ, class I> void NNH<BJ,I>::remove_jet(int iA) {
NNBJ * jetA = where_is[iA];
tail--; n--;
*jetA = *tail;
where_is[jetA->index()] = jetA;
for (NNBJ * jetI = head; jetI != tail; jetI++) {
if (jetI->NN == jetA) set_NN_nocross(jetI, head, tail);
if (jetI->NN == tail) {jetI->NN = jetA;}
}
}
template<class BJ, class I> void NNH<BJ,I>::merge_jets(int iA, int iB,
const PseudoJet & jet, int index) {
NNBJ * jetA = where_is[iA];
NNBJ * jetB = where_is[iB];
if (jetA < jetB) std::swap(jetA,jetB);
this->init_jet(jetB, jet, index);
if (index >= int(where_is.size())) where_is.resize(2*index);
where_is[jetB->index()] = jetB;
tail--; n--;
*jetA = *tail;
where_is[jetA->index()] = jetA;
for (NNBJ * jetI = head; jetI != tail; jetI++) {
if (jetI->NN == jetA || jetI->NN == jetB) {
set_NN_nocross(jetI, head, tail);
}
double dist = jetI->distance(jetB);
if (dist < jetI->NN_dist) {
if (jetI != jetB) {
jetI->NN_dist = dist;
jetI->NN = jetB;
}
}
if (dist < jetB->NN_dist) {
if (jetI != jetB) {
jetB->NN_dist = dist;
jetB->NN = jetI;
}
}
if (jetI->NN == tail) {jetI->NN = jetA;}
}
}
template <class BJ, class I> void NNH<BJ,I>::set_NN_crosscheck(NNBJ * jet,
NNBJ * begin, NNBJ * end) {
double NN_dist = jet->beam_distance();
NNBJ * NN = NULL;
for (NNBJ * jetB = begin; jetB != end; jetB++) {
double dist = jet->distance(jetB);
if (dist < NN_dist) {
NN_dist = dist;
NN = jetB;
}
if (dist < jetB->NN_dist) {
jetB->NN_dist = dist;
jetB->NN = jet;
}
}
jet->NN = NN;
jet->NN_dist = NN_dist;
}
template <class BJ, class I> void NNH<BJ,I>::set_NN_nocross(
NNBJ * jet, NNBJ * begin, NNBJ * end) {
double NN_dist = jet->beam_distance();
NNBJ * NN = NULL;
if (begin < jet) {
for (NNBJ * jetB = begin; jetB != jet; jetB++) {
double dist = jet->distance(jetB);
if (dist < NN_dist) {
NN_dist = dist;
NN = jetB;
}
}
}
if (end > jet) {
for (NNBJ * jetB = jet+1; jetB != end; jetB++) {
double dist = jet->distance (jetB);
if (dist < NN_dist) {
NN_dist = dist;
NN = jetB;
}
}
}
jet->NN = NN;
jet->NN_dist = NN_dist;
}
FJCORE_END_NAMESPACE // defined in fastjet/internal/base.hh
#endif // __FJCORE_NNH_HH__
#endif
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