Class to populate Geant4 primaries from HepMC(2) files. More...

Inheritance diagram for dd4hep::sim::Geant4EventReaderHepMC:

Public Member Functions
	Geant4EventReaderHepMC (const std::string &nam)
	Initializing constructor. More...

virtual	~Geant4EventReaderHepMC ()
	Default destructor. More...

virtual EventReaderStatus	readParticles (int event_number, Vertices &vertices, std::vector< Particle * > &particles) override
	Read an event and fill a vector of MCParticles. More...

virtual EventReaderStatus	moveToEvent (int event_number) override
	Move to the indicated event number. More...

virtual EventReaderStatus	skipEvent () override
	Skip event. To be implemented for sequential sources. More...

Public Member Functions inherited from dd4hep::sim::Geant4EventReader
	Geant4EventReader (const std::string &nam)
	Initializing constructor. More...

virtual	~Geant4EventReader ()
	Default destructor. More...

Geant4Context *	context () const
	Get the context (from the input action) More...

void	setInputAction (Geant4InputAction *action)
	Set the input action. More...

const std::string &	name () const
	File name. More...

bool	hasDirectAccess () const
	Flag if direct event access (by event sequence number) is supported (Default: false) More...

int	currentEventNumber () const
	return current Event Number More...

virtual EventReaderStatus	readParticles (int event_number, Vertices &vertices, Particles &particles)=0
	Read an event and fill a vector of MCParticles. More...

virtual EventReaderStatus	setParameters (std::map< std::string, std::string > &)
	pass parameters to the event reader object More...

virtual void	checkParameters (std::map< std::string, std::string > &)
	make sure that all parameters have been processed, otherwise throw exceptions More...

virtual void	registerRunParameters ()
	Register Run Parameters. More...

Protected Attributes
in_stream	m_input

EventStream *	m_events

Protected Attributes inherited from dd4hep::sim::Geant4EventReader
std::string	m_name
	File name to be opened and read. More...

bool	m_directAccess { false }
	Flag if direct event access is supported. To be explicitly set by subclass constructors. More...

int	m_currEvent { 0 }
	Current event number. More...

Geant4InputAction *	m_inputAction { nullptr }
	The input action context. More...

Private Types
typedef boost::iostreams::stream< dd4hep_file_source< int > >	in_stream

typedef HepMC::EventStream	EventStream

Additional Inherited Members
Public Types inherited from dd4hep::sim::Geant4EventReader
enum	EventReaderStatus { EVENT_READER_ERROR =0, EVENT_READER_OK =1, EVENT_READER_NO_DIRECT =2, EVENT_READER_NO_PRIMARIES =4, EVENT_READER_NO_FACTORY =6, EVENT_READER_IO_ERROR =8, EVENT_READER_EOF =10 }
	Status codes of the event reader object. Anything with NOT low-bit set is an error. More...

typedef Geant4Vertex	Vertex

typedef Geant4Particle	Particle

typedef std::vector< Particle * >	Particles

typedef std::vector< Vertex * >	Vertices

Protected Member Functions inherited from dd4hep::sim::Geant4EventReader
template<typename T >
void	_getParameterValue (std::map< std::string, std::string > &parameters, std::string const &parameterName, T &parameter, T defaultValue)
	transform the string parameter value into the type of parameter More...

Detailed Description

Class to populate Geant4 primaries from HepMC(2) files.

Class to populate Geant4 primary particles and vertices from a file in HepMC format (ASCII)

For details also see: http://hepmc.web.cern.ch/hepmc/ReaderAsciiHepMC2_8cc_source.html

Author: P.Kostka (main author); M.Frank (code reshuffeling into new DDG4 scheme)

Version: 1.0

Definition at line 55 of file Geant4EventReaderHepMC.cpp.

Member Typedef Documentation

◆ EventStream

typedef HepMC::EventStream dd4hep::sim::Geant4EventReaderHepMC::EventStream

private

Definition at line 58 of file Geant4EventReaderHepMC.cpp.

◆ in_stream

typedef boost::iostreams::stream<dd4hep_file_source<int> > dd4hep::sim::Geant4EventReaderHepMC::in_stream

private

Definition at line 56 of file Geant4EventReaderHepMC.cpp.

Constructor & Destructor Documentation

◆ Geant4EventReaderHepMC()

dd4hep::sim::Geant4EventReaderHepMC::Geant4EventReaderHepMC ( const std::string & nam )

explicit

Initializing constructor.

◆ ~Geant4EventReaderHepMC()

virtual dd4hep::sim::Geant4EventReaderHepMC::~Geant4EventReaderHepMC ( )

virtual

Default destructor.

Member Function Documentation

◆ moveToEvent()

virtual EventReaderStatus dd4hep::sim::Geant4EventReaderHepMC::moveToEvent ( int event_number )

overridevirtual

Move to the indicated event number.

For pure sequential access, the default implementation will skip events one by one. For technologies supporting direct event access the default implementation will be empty.

Returns

Reimplemented from dd4hep::sim::Geant4EventReader.

◆ readParticles()

virtual EventReaderStatus dd4hep::sim::Geant4EventReaderHepMC::readParticles	(	int	event_number,
		Vertices &	vertices,
		std::vector< Particle * > &	particles
	)

overridevirtual

Read an event and fill a vector of MCParticles.

◆ skipEvent()

virtual EventReaderStatus dd4hep::sim::Geant4EventReaderHepMC::skipEvent ( )

inlineoverridevirtual

Skip event. To be implemented for sequential sources.

Reimplemented from dd4hep::sim::Geant4EventReader.

Definition at line 72 of file Geant4EventReaderHepMC.cpp.

Member Data Documentation

◆ m_events

EventStream* dd4hep::sim::Geant4EventReaderHepMC::m_events

protected

Definition at line 61 of file Geant4EventReaderHepMC.cpp.

◆ m_input

in_stream dd4hep::sim::Geant4EventReaderHepMC::m_input