The structure for a jet made of pieces. More...

#include <CompositeJetStructure.hh>

Inheritance diagram for fastjet::CompositeJetStructure:

Collaboration diagram for fastjet::CompositeJetStructure:

Public Member Functions
	CompositeJetStructure ()
	default ctor
	CompositeJetStructure (const std::vector< PseudoJet > &initial_pieces, const JetDefinition::Recombiner *recombiner=0)
	ctor with initialisation
virtual	~CompositeJetStructure ()
	default dtor
virtual std::string	description () const
	description
virtual bool	has_constituents () const
	true unless the jet has no pieces (see also the description of constituents() below)
virtual std::vector< PseudoJet >	constituents (const PseudoJet &jet) const
	return the constituents (i.e.
virtual bool	has_pieces (const PseudoJet &jet) const
	true if it has pieces (always the case)
virtual std::vector< PseudoJet >	pieces (const PseudoJet &jet) const
	returns the pieces
virtual bool	has_area () const
	check if it has a well-defined area
virtual double	area (const PseudoJet &reference) const
	return the jet (scalar) area.
virtual double	area_error (const PseudoJet &reference) const
	return the error (uncertainty) associated with the determination of the area of this jet.
virtual PseudoJet	area_4vector (const PseudoJet &reference) const
	return the jet 4-vector area.
virtual bool	is_pure_ghost (const PseudoJet &reference) const
	true if this jet is made exclusively of ghosts.
void	set_area_information (PseudoJet *area_4vector_ptr)
Protected Attributes
std::vector< PseudoJet >	_pieces
	the pieces building the jet
PseudoJet *	_area_4vector_ptr
	pointer to the 4-vector jet area

Detailed Description

The structure for a jet made of pieces.

This stores the vector of the pieces that make the jet and provide the methods to access them

Definition at line 49 of file CompositeJetStructure.hh.

Member Function Documentation

std::vector< PseudoJet > fastjet::CompositeJetStructure::constituents ( const PseudoJet & jet ) const [virtual]

return the constituents (i.e.

the union of the constituents of each piece)

If any of the pieces has no constituent, the piece itself is considered as a constituent Note that as a consequence, a composite jet with no pieces will have an empty vector as constituents

Reimplemented from fastjet::PseudoJetStructureBase.

Definition at line 97 of file CompositeJetStructure.cc.

References _pieces, and has_constituents().

                                                                                  {
  // recurse into the pieces that ahve constituents, just append the others
  // the following code automatically throws an Error if any of the
  // pieces has no constituents
  vector<PseudoJet> all_constituents;
  for (unsigned i = 0; i < _pieces.size(); i++) {
    if (_pieces[i].has_constituents()){
      vector<PseudoJet> constits = _pieces[i].constituents();
      copy(constits.begin(), constits.end(), back_inserter(all_constituents));
    } else {
      all_constituents.push_back(_pieces[i]);
    }
  }
 
  return all_constituents;
}

double fastjet::CompositeJetStructure::area_error ( const PseudoJet & reference ) const [virtual]

return the error (uncertainty) associated with the determination of the area of this jet.

Be conservative: return the sum of the errors

Reimplemented from fastjet::PseudoJetStructureBase.

Definition at line 142 of file CompositeJetStructure.cc.

References _pieces, area(), and has_area().

                                                                        {
  if (! has_area())
    throw Error("One or more of this composite jet's pieces does not support area");

  double a_err=0;
  for (unsigned i = 0; i < _pieces.size(); i++)
    a_err += _pieces[i].area();

  return a_err;
}

bool fastjet::CompositeJetStructure::is_pure_ghost ( const PseudoJet & reference ) const [virtual]

true if this jet is made exclusively of ghosts.

In this case, it will be true if all pieces are pure ghost

Reimplemented from fastjet::PseudoJetStructureBase.

Definition at line 164 of file CompositeJetStructure.cc.

References _pieces.

                                                                         {
  for (unsigned i = 0; i < _pieces.size(); i++)
    if (! _pieces[i].is_pure_ghost()) return false;

  return true;
}

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

include/fastjet/CompositeJetStructure.hh
src/CompositeJetStructure.cc

Public Member Functions

Protected Attributes

Detailed Description

Member Function Documentation