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//--------------------------------------------------------------------------
#ifndef HEPMC_GEN_VERTEX_H
#define HEPMC_GEN_VERTEX_H
//////////////////////////////////////////////////////////////////////////
// Matt.Dobbs@Cern.CH, September 1999, refer to:
// M. Dobbs and J.B. Hansen, "The HepMC C++ Monte Carlo Event Record for
// High Energy Physics", Computer Physics Communications (to be published).
//
// GenVertex within an event
// A vertex is indirectly (via particle "edges") linked to other
// vertices ("nodes") to form a composite "graph"
//////////////////////////////////////////////////////////////////////////
// --> HANDLE COMPILER INCONSISTENCIES
// This pre-compiler directive is included (2002-01-16) to allow compatibility
// with several compilers.
// Mar 27, 2004: HepMC is now standard compliant only.
// I've removed forward_iterator, and it will no longer compile on gcc < 3.
#ifdef __SUNPRO_CC // Solaris CC 5.2
#define NEED_SOLARIS_FRIEND_FEATURE
#endif // Platform
#include "HepMC/WeightContainer.h"
#include "HepMC/SimpleVector.h"
#include "HepMC/IteratorRange.h"
#include <iostream>
#include <iterator>
#include <vector>
#include <set>
#include <algorithm>
#include <cstddef>
namespace HepMC {
class GenVertexParticleRange;
class GenParticleProductionRange;
class ConstGenParticleProductionRange;
class GenParticleEndRange;
class ConstGenParticleEndRange;
class GenParticle;
class GenEvent;
//! GenVertex contains information about decay vertices.
///
/// \class GenVertex
/// HepMC::GenVertex contains the position in space and time of a decay.
/// It also contains lists of incoming and outgoing particles.
///
class GenVertex {
/// print vertex information
friend std::ostream& operator<<( std::ostream&, const GenVertex& );
friend class GenEvent;
#ifdef NEED_SOLARIS_FRIEND_FEATURE
// This bit of ugly code is only for CC-5.2 compiler.
// M.Dobbs 2002/02/19
// It is not needed by linux gcc, nor Windows Visual C++.
public:
class vertex_iterator;
friend class vertex_iterator;
class particle_iterator;
friend class particle_iterator;
#endif // NEED_SOLARIS_FRIEND_FEATURE
public:
/// default constructor
GenVertex( const FourVector& position =FourVector(0,0,0,0),
int id = 0,
const WeightContainer& weights = std::vector<double>() );
GenVertex( const GenVertex& invertex ); //!< shallow copy
virtual ~GenVertex();
void swap( GenVertex & other); //!< swap
GenVertex& operator= ( const GenVertex& invertex ); //!< shallow
bool operator==( const GenVertex& a ) const; //!< equality
bool operator!=( const GenVertex& a ) const; //!< inequality
void print( std::ostream& ostr = std::cout ) const; //!< print vertex information
double check_momentum_conservation() const;//!< |Sum (three_mom_in-three_mom_out)|
/// add incoming particle
void add_particle_in( GenParticle* inparticle );
/// add outgoing particle
void add_particle_out( GenParticle* outparticle );
/// remove_particle finds *particle in the in and/or out list and
/// removes it from these lists ... it DOES NOT DELETE THE PARTICLE
/// or its relations. You could delete the particle too as follows:
/// delete vtx->remove_particle( particle );
GenParticle* remove_particle( GenParticle* particle ); //!< remove a particle
operator HepMC::FourVector() const; //!< conversion operator
operator HepMC::ThreeVector() const; //!< conversion operator
////////////////////
// access methods //
////////////////////
/// pointer to the event that owns this vertex
GenEvent* parent_event() const;
/// vertex position
ThreeVector point3d() const;
/// vertex position and time
const FourVector & position() const;
/// set vertex position and time
void set_position( const FourVector& position = FourVector(0,0,0,0) );
/// we don't define what you use the id for -- but we imagine,
/// for example it might code the meaning of the weights()
int id() const; //!< vertex ID
void set_id( int id ); //!< set vertex ID
///
/// The barcode is the vertex's reference number, every vertex in the
/// event has a unique barcode. Vertex barcodes are negative numbers,
/// particle barcodes are positive numbers.
///
/// Please note that the barcodes are intended for internal use within
/// HepMC as a unique identifier for the particles and vertices.
/// Using the barcode to encode extra information is an abuse of
/// the barcode data member and causes confusion among users.
///
int barcode() const; //!< unique identifier
/// In general there is no reason to "suggest_barcode"
bool suggest_barcode( int the_bar_code );
/// direct access to the weights container is allowed.
WeightContainer& weights();
/// const direct access to the weights container
const WeightContainer& weights() const;
/// particle range
GenVertexParticleRange particles( IteratorRange range = relatives );
/// incoming particle range
GenParticleProductionRange particles_in( GenParticle&, IteratorRange range = relatives );
/// incoming particle range
ConstGenParticleProductionRange particles_in( GenParticle const &, IteratorRange range = relatives ) const;
/// outgoing particle range
GenParticleEndRange particles_out( GenParticle&, IteratorRange range = relatives );
/// outgoing particle range
ConstGenParticleEndRange particles_out( GenParticle const &, IteratorRange range = relatives ) const;
////////////////////
// Iterators // users should use prefer to use particle_iterator
////////////////////
/// const iterator for incoming particles
typedef std::vector<HepMC::GenParticle*>::const_iterator
particles_in_const_iterator;
/// const iterator for outgoing particles
typedef std::vector<HepMC::GenParticle*>::const_iterator
particles_out_const_iterator;
/// begin iteration of incoming particles
particles_in_const_iterator particles_in_const_begin() const;
/// end iteration of incoming particles
particles_in_const_iterator particles_in_const_end() const;
/// begin iteration of outgoing particles
particles_out_const_iterator particles_out_const_begin() const;
/// end iteration of outgoing particles
particles_out_const_iterator particles_out_const_end() const;
/// number of incoming particles
int particles_in_size() const;
/// number of outgoing particles
int particles_out_size() const;
protected:
//static unsigned int counter(); //!< temporary for debugging
/// only the GenEvent (friend) is allowed to set the parent_event,
/// and barcode. It is done automatically anytime you add a
/// vertex to an event
void set_parent_event_( GenEvent* evt ); //!< set parent event
void set_barcode_( int the_bar_code ); //!< set identifier
void change_parent_event_( GenEvent* evt ); //!< for use with swap
/////////////////////////////
// edge_iterator // (protected - for internal use only)
/////////////////////////////
// If the user wants the functionality of the edge_iterator, he should
// use particle_iterator with IteratorRange = family, parents, children
//
//! edge iterator
/// \class edge_iterator
/// iterate over the family of edges connected to m_vertex begins
/// with parents (incoming particles) then children (outgoing)
/// This is not a recursive iterator ... it is a building block
/// for the public iterators and is intended for internal use only.
/// The acceptable Iterator Ranges are: family, parents, children
class edge_iterator :
public std::iterator<std::forward_iterator_tag,HepMC::GenParticle*,ptrdiff_t>{
public:
edge_iterator();
/// used to set limits on the iteration
edge_iterator( const GenVertex& vtx, IteratorRange range =family );
/// copy
edge_iterator( const edge_iterator& p );
virtual ~edge_iterator();
/// make a copy
edge_iterator& operator=( const edge_iterator& p );
/// return a pointer to a particle
GenParticle* operator*(void) const;
/// Pre-fix increment
edge_iterator& operator++(void); // Pre-fix increment
/// Post-fix increment
edge_iterator operator++(int); // Post-fix increment
/// equality
bool operator==( const edge_iterator& a ) const;
/// inequality
bool operator!=( const edge_iterator& a ) const;
/// true if parent of root vtx
bool is_parent() const;
/// true if child of root vtx
bool is_child() const;
/// root vertex of this iteration
const GenVertex* vertex_root() const;
private:
/// Pre-fix increment -- is not allowed
edge_iterator& operator--(void);
/// Post-fix increment -- is not allowed
edge_iterator operator--(int);
private:
const GenVertex* m_vertex;
IteratorRange m_range;
std::vector<HepMC::GenParticle*>::const_iterator m_set_iter;
bool m_is_inparticle_iter;
bool m_is_past_end;
};
friend class edge_iterator;
/// size
int edges_size( IteratorRange range = family ) const;
/// begin range
edge_iterator edges_begin( IteratorRange range = family) const;
/// end range
edge_iterator edges_end( IteratorRange /* dummy_range */ ) const;
public:
///////////////////////////////
// vertex_iterator //
///////////////////////////////
//! vertex iterator
/// \class vertex_iterator
/// Iterates over all vertices connected via a graph to this vertex.
/// this is made friend to that it can access protected edge
/// iterator the range can be IteratorRange= ( parents, children,
/// family, ancestors, descendants, relatives )
/// example for range=descendants the iterator
/// will return all vertices
/// which are children (connected by an outgoing particle edge),
/// grandchildren, great-grandchildren, etc. of this vertex
/// In all cases the iterator always returns this vertex
/// (returned last).
/// The algorithm is accomplished by converting the graph to a tree
/// (by "chopping" the edges connecting to an already visited
/// vertex) and returning the vertices in POST ORDER traversal.
///
class vertex_iterator :
public std::iterator<std::forward_iterator_tag,HepMC::GenVertex*,ptrdiff_t>{
public:
vertex_iterator();
/// used to set limits on the iteration
vertex_iterator( GenVertex& vtx_root, IteratorRange range );
/// next constructor is intended for internal use only
vertex_iterator( GenVertex& vtx_root, IteratorRange range,
std::set<const HepMC::GenVertex*>& visited_vertices );
/// copy
vertex_iterator( const vertex_iterator& v_iter );
virtual ~vertex_iterator();
/// make a copy
vertex_iterator& operator=( const vertex_iterator& );
/// return a pointer to a vertex
GenVertex* operator*(void) const;
/// Pre-fix increment
vertex_iterator& operator++(void); //Pre-fix increment
/// Post-fix increment
vertex_iterator operator++(int); //Post-fix increment
/// equality
bool operator==( const vertex_iterator& ) const;
/// inequality
bool operator!=( const vertex_iterator& ) const;
/// vertex that this iterator begins from
GenVertex* vertex_root() const;
/// iterator range
IteratorRange range() const;
/// intended for internal use only.
void copy_with_own_set( const vertex_iterator&
v_iter,
std::set<const HepMC::GenVertex*>&
visited_vertices );
protected: // intended for internal use only
/// non-null if recursive iter. created
GenVertex* follow_edge_();
/// copy recursive iterator
void copy_recursive_iterator_( const vertex_iterator*
recursive_v_iter );
private:
/// Pre-fix increment -- is not allowed
vertex_iterator& operator--(void);
/// Post-fix increment -- is not allowed
vertex_iterator operator--(int);
private:
GenVertex* m_vertex; // the vertex associated to this iter
IteratorRange m_range;
std::set<const HepMC::GenVertex*>* m_visited_vertices;
bool m_it_owns_set; // true if it is responsible for
// deleting the visited vertex set
edge_iterator m_edge; // particle edge pointing to return vtx
vertex_iterator* m_recursive_iterator;
};
friend class vertex_iterator;
/// begin vertex range
vertex_iterator vertices_begin( IteratorRange range = relatives );
/// end vertex range
vertex_iterator vertices_end( IteratorRange /* dummy_range */ );
public:
///////////////////////////////
// particle_iterator //
///////////////////////////////
//! particle iterator
/// \class particle_iterator
/// Iterates over all particles connected via a graph.
/// by iterating through all vertices in the m_range. For each
/// vertex it returns orphaned parent particles
/// (i.e. parents without production vertices)
/// then children ... in this way each particle is associated
/// to exactly one vertex and so it is returned exactly once.
/// Is made friend so that it can access protected edge iterator
class particle_iterator :
public std::iterator<std::forward_iterator_tag,GenParticle*,ptrdiff_t>{
public:
particle_iterator();
/// used to set limits on the iteration
particle_iterator( GenVertex& vertex_root, IteratorRange range );
/// copy
particle_iterator( const particle_iterator& );
virtual ~particle_iterator();
/// make a copy
particle_iterator& operator=( const particle_iterator& );
/// return a pointer to a particle
GenParticle* operator*(void) const;
/// Pre-fix increment
particle_iterator& operator++(void);
/// Post-fix increment
particle_iterator operator++(int);
/// equality
bool operator==( const particle_iterator& ) const;
/// inequality
bool operator!=( const particle_iterator& ) const;
protected:
GenParticle* advance_to_first_(); //!< "first" particle
private:
vertex_iterator m_vertex_iterator;
edge_iterator m_edge; // points to the return
};
friend class particle_iterator;
/// begin particle range
particle_iterator particles_begin( IteratorRange range
= relatives );
/// end particle range
particle_iterator particles_end( IteratorRange
/* dummy_range */ );
////////////////////////////////////////////////
protected:
/// for internal use only
void delete_adopted_particles();
/// for internal use only - remove particle from incoming list
void remove_particle_in( GenParticle* );
/// for internal use only - remove particle from outgoing list
void remove_particle_out( GenParticle* );
/// scale the position vector
/// this method is only for use by GenEvent
void convert_position( const double& );
private: // GenVertex data members
FourVector m_position; //4-vec of vertex [mm]
std::vector<HepMC::GenParticle*> m_particles_in; //all incoming particles
std::vector<HepMC::GenParticle*> m_particles_out; //all outgoing particles
int m_id;
WeightContainer m_weights; // weights for this vtx
GenEvent* m_event;
int m_barcode; // unique identifier in the event
//static unsigned int s_counter;
};
////////////////////////////
// INLINES access methods //
////////////////////////////
inline GenVertex::operator HepMC::FourVector() const { return position(); }
inline GenVertex::operator HepMC::ThreeVector() const { return point3d(); }
inline const FourVector & GenVertex::position() const { return m_position; }
inline GenEvent* GenVertex::parent_event() const { return m_event; }
inline ThreeVector GenVertex::point3d() const {
return ThreeVector(m_position.x(),m_position.y(),m_position.z());
}
inline int GenVertex::id() const { return m_id; }
inline int GenVertex::barcode() const { return m_barcode; }
inline void GenVertex::set_barcode_( int bc ) { m_barcode = bc; }
inline WeightContainer& GenVertex::weights() { return m_weights; }
inline const WeightContainer& GenVertex::weights() const
{ return m_weights; }
inline void GenVertex::set_position( const FourVector& position ) {
m_position = position;
}
inline void GenVertex::set_id( int id ) { m_id = id; }
//////////////
// INLINES //
//////////////
inline GenVertex::particles_in_const_iterator
GenVertex::particles_in_const_begin() const {
return m_particles_in.begin();
}
inline GenVertex::particles_in_const_iterator
GenVertex::particles_in_const_end() const {
return m_particles_in.end();
}
inline GenVertex::particles_out_const_iterator
GenVertex::particles_out_const_begin() const {
return m_particles_out.begin();
}
inline GenVertex::particles_out_const_iterator
GenVertex::particles_out_const_end() const {
return m_particles_out.end();
}
inline int GenVertex::particles_in_size() const {
return m_particles_in.size();
}
inline int GenVertex::particles_out_size() const {
return m_particles_out.size();
}
inline bool GenVertex::edge_iterator::operator==(
const edge_iterator& a ) const {
return **this == *a;
}
inline bool GenVertex::edge_iterator::operator!=(
const edge_iterator& a ) const {
return !(**this == *a);
}
inline const GenVertex* GenVertex::edge_iterator::vertex_root() const {
return m_vertex;
}
inline GenVertex::edge_iterator GenVertex::edges_begin( IteratorRange
range ) const {
return GenVertex::edge_iterator(*this, range);
}
inline GenVertex::edge_iterator GenVertex::edges_end( IteratorRange
/* dummy_range */ ) const {
return GenVertex::edge_iterator();
}
inline bool GenVertex::vertex_iterator::operator==(
const vertex_iterator& a ) const {
return **this == *a;
}
inline bool GenVertex::vertex_iterator::operator!=(
const vertex_iterator& a ) const {
return !(**this == *a);
}
inline GenVertex* GenVertex::vertex_iterator::vertex_root() const {
return m_vertex;
}
inline IteratorRange GenVertex::vertex_iterator::range() const {
return m_range;
}
inline GenVertex::vertex_iterator GenVertex::vertices_begin(
IteratorRange range ){
// this is not const because the it could return itself
return vertex_iterator( *this, range );
}
inline GenVertex::vertex_iterator GenVertex::vertices_end(
IteratorRange /* dummy_range */ ) {
return vertex_iterator();
}
inline bool GenVertex::particle_iterator::operator==(
const particle_iterator& a ) const {
return **this == *a;
}
inline bool GenVertex::particle_iterator::operator!=(
const particle_iterator& a ) const {
return !(**this == *a);
}
inline GenVertex::particle_iterator GenVertex::particles_begin(
IteratorRange range ) {
return particle_iterator( *this, range );
}
inline GenVertex::particle_iterator GenVertex::particles_end(
IteratorRange /* dummy_range */ ){
return particle_iterator();
}
} // HepMC
#endif // HEPMC_GEN_VERTEX_H
//--------------------------------------------------------------------------
#ifndef HEPMC_GEN_VERTEX_H
#define HEPMC_GEN_VERTEX_H
//////////////////////////////////////////////////////////////////////////
// Matt.Dobbs@Cern.CH, September 1999, refer to:
// M. Dobbs and J.B. Hansen, "The HepMC C++ Monte Carlo Event Record for
// High Energy Physics", Computer Physics Communications (to be published).
//
// GenVertex within an event
// A vertex is indirectly (via particle "edges") linked to other
// vertices ("nodes") to form a composite "graph"
//////////////////////////////////////////////////////////////////////////
// --> HANDLE COMPILER INCONSISTENCIES
// This pre-compiler directive is included (2002-01-16) to allow compatibility
// with several compilers.
// Mar 27, 2004: HepMC is now standard compliant only.
// I've removed forward_iterator, and it will no longer compile on gcc < 3.
#ifdef __SUNPRO_CC // Solaris CC 5.2
#define NEED_SOLARIS_FRIEND_FEATURE
#endif // Platform
#include "HepMC/WeightContainer.h"
#include "HepMC/SimpleVector.h"
#include "HepMC/IteratorRange.h"
#include <iostream>
#include <iterator>
#include <vector>
#include <set>
#include <algorithm>
#include <cstddef>
namespace HepMC {
class GenVertexParticleRange;
class GenParticleProductionRange;
class ConstGenParticleProductionRange;
class GenParticleEndRange;
class ConstGenParticleEndRange;
class GenParticle;
class GenEvent;
//! GenVertex contains information about decay vertices.
///
/// \class GenVertex
/// HepMC::GenVertex contains the position in space and time of a decay.
/// It also contains lists of incoming and outgoing particles.
///
class GenVertex {
/// print vertex information
friend std::ostream& operator<<( std::ostream&, const GenVertex& );
friend class GenEvent;
#ifdef NEED_SOLARIS_FRIEND_FEATURE
// This bit of ugly code is only for CC-5.2 compiler.
// M.Dobbs 2002/02/19
// It is not needed by linux gcc, nor Windows Visual C++.
public:
class vertex_iterator;
friend class vertex_iterator;
class particle_iterator;
friend class particle_iterator;
#endif // NEED_SOLARIS_FRIEND_FEATURE
public:
/// default constructor
GenVertex( const FourVector& position =FourVector(0,0,0,0),
int id = 0,
const WeightContainer& weights = std::vector<double>() );
GenVertex( const GenVertex& invertex ); //!< shallow copy
virtual ~GenVertex();
void swap( GenVertex & other); //!< swap
GenVertex& operator= ( const GenVertex& invertex ); //!< shallow
bool operator==( const GenVertex& a ) const; //!< equality
bool operator!=( const GenVertex& a ) const; //!< inequality
void print( std::ostream& ostr = std::cout ) const; //!< print vertex information
double check_momentum_conservation() const;//!< |Sum (three_mom_in-three_mom_out)|
/// add incoming particle
void add_particle_in( GenParticle* inparticle );
/// add outgoing particle
void add_particle_out( GenParticle* outparticle );
/// remove_particle finds *particle in the in and/or out list and
/// removes it from these lists ... it DOES NOT DELETE THE PARTICLE
/// or its relations. You could delete the particle too as follows:
/// delete vtx->remove_particle( particle );
GenParticle* remove_particle( GenParticle* particle ); //!< remove a particle
operator HepMC::FourVector() const; //!< conversion operator
operator HepMC::ThreeVector() const; //!< conversion operator
////////////////////
// access methods //
////////////////////
/// pointer to the event that owns this vertex
GenEvent* parent_event() const;
/// vertex position
ThreeVector point3d() const;
/// vertex position and time
const FourVector & position() const;
/// set vertex position and time
void set_position( const FourVector& position = FourVector(0,0,0,0) );
/// we don't define what you use the id for -- but we imagine,
/// for example it might code the meaning of the weights()
int id() const; //!< vertex ID
void set_id( int id ); //!< set vertex ID
///
/// The barcode is the vertex's reference number, every vertex in the
/// event has a unique barcode. Vertex barcodes are negative numbers,
/// particle barcodes are positive numbers.
///
/// Please note that the barcodes are intended for internal use within
/// HepMC as a unique identifier for the particles and vertices.
/// Using the barcode to encode extra information is an abuse of
/// the barcode data member and causes confusion among users.
///
int barcode() const; //!< unique identifier
/// In general there is no reason to "suggest_barcode"
bool suggest_barcode( int the_bar_code );
/// direct access to the weights container is allowed.
WeightContainer& weights();
/// const direct access to the weights container
const WeightContainer& weights() const;
/// particle range
GenVertexParticleRange particles( IteratorRange range = relatives );
/// incoming particle range
GenParticleProductionRange particles_in( GenParticle&, IteratorRange range = relatives );
/// incoming particle range
ConstGenParticleProductionRange particles_in( GenParticle const &, IteratorRange range = relatives ) const;
/// outgoing particle range
GenParticleEndRange particles_out( GenParticle&, IteratorRange range = relatives );
/// outgoing particle range
ConstGenParticleEndRange particles_out( GenParticle const &, IteratorRange range = relatives ) const;
////////////////////
// Iterators // users should use prefer to use particle_iterator
////////////////////
/// const iterator for incoming particles
typedef std::vector<HepMC::GenParticle*>::const_iterator
particles_in_const_iterator;
/// const iterator for outgoing particles
typedef std::vector<HepMC::GenParticle*>::const_iterator
particles_out_const_iterator;
/// begin iteration of incoming particles
particles_in_const_iterator particles_in_const_begin() const;
/// end iteration of incoming particles
particles_in_const_iterator particles_in_const_end() const;
/// begin iteration of outgoing particles
particles_out_const_iterator particles_out_const_begin() const;
/// end iteration of outgoing particles
particles_out_const_iterator particles_out_const_end() const;
/// number of incoming particles
int particles_in_size() const;
/// number of outgoing particles
int particles_out_size() const;
protected:
//static unsigned int counter(); //!< temporary for debugging
/// only the GenEvent (friend) is allowed to set the parent_event,
/// and barcode. It is done automatically anytime you add a
/// vertex to an event
void set_parent_event_( GenEvent* evt ); //!< set parent event
void set_barcode_( int the_bar_code ); //!< set identifier
void change_parent_event_( GenEvent* evt ); //!< for use with swap
/////////////////////////////
// edge_iterator // (protected - for internal use only)
/////////////////////////////
// If the user wants the functionality of the edge_iterator, he should
// use particle_iterator with IteratorRange = family, parents, children
//
//! edge iterator
/// \class edge_iterator
/// iterate over the family of edges connected to m_vertex begins
/// with parents (incoming particles) then children (outgoing)
/// This is not a recursive iterator ... it is a building block
/// for the public iterators and is intended for internal use only.
/// The acceptable Iterator Ranges are: family, parents, children
class edge_iterator :
public std::iterator<std::forward_iterator_tag,HepMC::GenParticle*,ptrdiff_t>{
public:
edge_iterator();
/// used to set limits on the iteration
edge_iterator( const GenVertex& vtx, IteratorRange range =family );
/// copy
edge_iterator( const edge_iterator& p );
virtual ~edge_iterator();
/// make a copy
edge_iterator& operator=( const edge_iterator& p );
/// return a pointer to a particle
GenParticle* operator*(void) const;
/// Pre-fix increment
edge_iterator& operator++(void); // Pre-fix increment
/// Post-fix increment
edge_iterator operator++(int); // Post-fix increment
/// equality
bool operator==( const edge_iterator& a ) const;
/// inequality
bool operator!=( const edge_iterator& a ) const;
/// true if parent of root vtx
bool is_parent() const;
/// true if child of root vtx
bool is_child() const;
/// root vertex of this iteration
const GenVertex* vertex_root() const;
private:
/// Pre-fix increment -- is not allowed
edge_iterator& operator--(void);
/// Post-fix increment -- is not allowed
edge_iterator operator--(int);
private:
const GenVertex* m_vertex;
IteratorRange m_range;
std::vector<HepMC::GenParticle*>::const_iterator m_set_iter;
bool m_is_inparticle_iter;
bool m_is_past_end;
};
friend class edge_iterator;
/// size
int edges_size( IteratorRange range = family ) const;
/// begin range
edge_iterator edges_begin( IteratorRange range = family) const;
/// end range
edge_iterator edges_end( IteratorRange /* dummy_range */ ) const;
public:
///////////////////////////////
// vertex_iterator //
///////////////////////////////
//! vertex iterator
/// \class vertex_iterator
/// Iterates over all vertices connected via a graph to this vertex.
/// this is made friend to that it can access protected edge
/// iterator the range can be IteratorRange= ( parents, children,
/// family, ancestors, descendants, relatives )
/// example for range=descendants the iterator
/// will return all vertices
/// which are children (connected by an outgoing particle edge),
/// grandchildren, great-grandchildren, etc. of this vertex
/// In all cases the iterator always returns this vertex
/// (returned last).
/// The algorithm is accomplished by converting the graph to a tree
/// (by "chopping" the edges connecting to an already visited
/// vertex) and returning the vertices in POST ORDER traversal.
///
class vertex_iterator :
public std::iterator<std::forward_iterator_tag,HepMC::GenVertex*,ptrdiff_t>{
public:
vertex_iterator();
/// used to set limits on the iteration
vertex_iterator( GenVertex& vtx_root, IteratorRange range );
/// next constructor is intended for internal use only
vertex_iterator( GenVertex& vtx_root, IteratorRange range,
std::set<const HepMC::GenVertex*>& visited_vertices );
/// copy
vertex_iterator( const vertex_iterator& v_iter );
virtual ~vertex_iterator();
/// make a copy
vertex_iterator& operator=( const vertex_iterator& );
/// return a pointer to a vertex
GenVertex* operator*(void) const;
/// Pre-fix increment
vertex_iterator& operator++(void); //Pre-fix increment
/// Post-fix increment
vertex_iterator operator++(int); //Post-fix increment
/// equality
bool operator==( const vertex_iterator& ) const;
/// inequality
bool operator!=( const vertex_iterator& ) const;
/// vertex that this iterator begins from
GenVertex* vertex_root() const;
/// iterator range
IteratorRange range() const;
/// intended for internal use only.
void copy_with_own_set( const vertex_iterator&
v_iter,
std::set<const HepMC::GenVertex*>&
visited_vertices );
protected: // intended for internal use only
/// non-null if recursive iter. created
GenVertex* follow_edge_();
/// copy recursive iterator
void copy_recursive_iterator_( const vertex_iterator*
recursive_v_iter );
private:
/// Pre-fix increment -- is not allowed
vertex_iterator& operator--(void);
/// Post-fix increment -- is not allowed
vertex_iterator operator--(int);
private:
GenVertex* m_vertex; // the vertex associated to this iter
IteratorRange m_range;
std::set<const HepMC::GenVertex*>* m_visited_vertices;
bool m_it_owns_set; // true if it is responsible for
// deleting the visited vertex set
edge_iterator m_edge; // particle edge pointing to return vtx
vertex_iterator* m_recursive_iterator;
};
friend class vertex_iterator;
/// begin vertex range
vertex_iterator vertices_begin( IteratorRange range = relatives );
/// end vertex range
vertex_iterator vertices_end( IteratorRange /* dummy_range */ );
public:
///////////////////////////////
// particle_iterator //
///////////////////////////////
//! particle iterator
/// \class particle_iterator
/// Iterates over all particles connected via a graph.
/// by iterating through all vertices in the m_range. For each
/// vertex it returns orphaned parent particles
/// (i.e. parents without production vertices)
/// then children ... in this way each particle is associated
/// to exactly one vertex and so it is returned exactly once.
/// Is made friend so that it can access protected edge iterator
class particle_iterator :
public std::iterator<std::forward_iterator_tag,GenParticle*,ptrdiff_t>{
public:
particle_iterator();
/// used to set limits on the iteration
particle_iterator( GenVertex& vertex_root, IteratorRange range );
/// copy
particle_iterator( const particle_iterator& );
virtual ~particle_iterator();
/// make a copy
particle_iterator& operator=( const particle_iterator& );
/// return a pointer to a particle
GenParticle* operator*(void) const;
/// Pre-fix increment
particle_iterator& operator++(void);
/// Post-fix increment
particle_iterator operator++(int);
/// equality
bool operator==( const particle_iterator& ) const;
/// inequality
bool operator!=( const particle_iterator& ) const;
protected:
GenParticle* advance_to_first_(); //!< "first" particle
private:
vertex_iterator m_vertex_iterator;
edge_iterator m_edge; // points to the return
};
friend class particle_iterator;
/// begin particle range
particle_iterator particles_begin( IteratorRange range
= relatives );
/// end particle range
particle_iterator particles_end( IteratorRange
/* dummy_range */ );
////////////////////////////////////////////////
protected:
/// for internal use only
void delete_adopted_particles();
/// for internal use only - remove particle from incoming list
void remove_particle_in( GenParticle* );
/// for internal use only - remove particle from outgoing list
void remove_particle_out( GenParticle* );
/// scale the position vector
/// this method is only for use by GenEvent
void convert_position( const double& );
private: // GenVertex data members
FourVector m_position; //4-vec of vertex [mm]
std::vector<HepMC::GenParticle*> m_particles_in; //all incoming particles
std::vector<HepMC::GenParticle*> m_particles_out; //all outgoing particles
int m_id;
WeightContainer m_weights; // weights for this vtx
GenEvent* m_event;
int m_barcode; // unique identifier in the event
//static unsigned int s_counter;
};
////////////////////////////
// INLINES access methods //
////////////////////////////
inline GenVertex::operator HepMC::FourVector() const { return position(); }
inline GenVertex::operator HepMC::ThreeVector() const { return point3d(); }
inline const FourVector & GenVertex::position() const { return m_position; }
inline GenEvent* GenVertex::parent_event() const { return m_event; }
inline ThreeVector GenVertex::point3d() const {
return ThreeVector(m_position.x(),m_position.y(),m_position.z());
}
inline int GenVertex::id() const { return m_id; }
inline int GenVertex::barcode() const { return m_barcode; }
inline void GenVertex::set_barcode_( int bc ) { m_barcode = bc; }
inline WeightContainer& GenVertex::weights() { return m_weights; }
inline const WeightContainer& GenVertex::weights() const
{ return m_weights; }
inline void GenVertex::set_position( const FourVector& position ) {
m_position = position;
}
inline void GenVertex::set_id( int id ) { m_id = id; }
//////////////
// INLINES //
//////////////
inline GenVertex::particles_in_const_iterator
GenVertex::particles_in_const_begin() const {
return m_particles_in.begin();
}
inline GenVertex::particles_in_const_iterator
GenVertex::particles_in_const_end() const {
return m_particles_in.end();
}
inline GenVertex::particles_out_const_iterator
GenVertex::particles_out_const_begin() const {
return m_particles_out.begin();
}
inline GenVertex::particles_out_const_iterator
GenVertex::particles_out_const_end() const {
return m_particles_out.end();
}
inline int GenVertex::particles_in_size() const {
return m_particles_in.size();
}
inline int GenVertex::particles_out_size() const {
return m_particles_out.size();
}
inline bool GenVertex::edge_iterator::operator==(
const edge_iterator& a ) const {
return **this == *a;
}
inline bool GenVertex::edge_iterator::operator!=(
const edge_iterator& a ) const {
return !(**this == *a);
}
inline const GenVertex* GenVertex::edge_iterator::vertex_root() const {
return m_vertex;
}
inline GenVertex::edge_iterator GenVertex::edges_begin( IteratorRange
range ) const {
return GenVertex::edge_iterator(*this, range);
}
inline GenVertex::edge_iterator GenVertex::edges_end( IteratorRange
/* dummy_range */ ) const {
return GenVertex::edge_iterator();
}
inline bool GenVertex::vertex_iterator::operator==(
const vertex_iterator& a ) const {
return **this == *a;
}
inline bool GenVertex::vertex_iterator::operator!=(
const vertex_iterator& a ) const {
return !(**this == *a);
}
inline GenVertex* GenVertex::vertex_iterator::vertex_root() const {
return m_vertex;
}
inline IteratorRange GenVertex::vertex_iterator::range() const {
return m_range;
}
inline GenVertex::vertex_iterator GenVertex::vertices_begin(
IteratorRange range ){
// this is not const because the it could return itself
return vertex_iterator( *this, range );
}
inline GenVertex::vertex_iterator GenVertex::vertices_end(
IteratorRange /* dummy_range */ ) {
return vertex_iterator();
}
inline bool GenVertex::particle_iterator::operator==(
const particle_iterator& a ) const {
return **this == *a;
}
inline bool GenVertex::particle_iterator::operator!=(
const particle_iterator& a ) const {
return !(**this == *a);
}
inline GenVertex::particle_iterator GenVertex::particles_begin(
IteratorRange range ) {
return particle_iterator( *this, range );
}
inline GenVertex::particle_iterator GenVertex::particles_end(
IteratorRange /* dummy_range */ ){
return particle_iterator();
}
} // HepMC
#endif // HEPMC_GEN_VERTEX_H
//--------------------------------------------------------------------------