Atlfast::DefaultSmearer Class Reference

Default implementation of the ISmearer interface. More...

#include <DefaultSmearer.h>

Inheritance diagram for Atlfast::DefaultSmearer:

[legend]Collaboration diagram for Atlfast::DefaultSmearer:

[legend]List of all members.

Public Member Functions
	DefaultSmearer (const int aseed)
virtual	~DefaultSmearer ()
virtual HepLorentzVector	smear (const HepMC::GenParticle &)
virtual HepLorentzVector	smear (const HepLorentzVector &)
virtual int	setSmearParameters (const std::vector< double > &smearValues)
virtual int	setSmearParamSchema (const int smearSchema)
RandGauss *	randGauss ()
RandFlat *	randFlat ()
Private Attributes
RandGauss *	m_randGauss
RandFlat *	m_randFlat
int	m_randSeed

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Detailed Description

Default implementation of the ISmearer interface.

This class manages the generation of random numbers and implements the smear() function required by ISmearer

Definition at line 35 of file DefaultSmearer.h.

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Constructor & Destructor Documentation

Atlfast::DefaultSmearer::DefaultSmearer

(

const int

aseed

)

Construct given a random number seed.

Definition at line 23 of file DefaultSmearer.cxx.

                                                {
    // instantiate the random number engine based on the seed and store it
    HepRandomEngine* randomEngine = new HepJamesRandom( aseed );
    m_randGauss    = new RandGauss( randomEngine );
    m_randFlat     = new RandFlat( *randomEngine );
    m_randSeed     = aseed;
  }

Atlfast::DefaultSmearer::~DefaultSmearer

(

)

[virtual]

Default destructor

Definition at line 32 of file DefaultSmearer.cxx.

                                  {

    // we check to see if our random engine and gauss are still set and if so kill them
    
    if (m_randFlat) {
      delete m_randFlat;
    }
    
    if (m_randGauss) {
      delete m_randGauss;
    }
    
    //    if (m_randomEngine) {
    //      delete m_randomEngine;
    //    }
    
  }

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Member Function Documentation

HepLorentzVector Atlfast::DefaultSmearer::smear

(

const HepMC::GenParticle &

)

[virtual]

Smear method for HepMC::GenParticle

Implements Atlfast::ISmearer.

Reimplemented in Atlfast::CellSmearer, Atlfast::ElectronSmearer, Atlfast::JetSmearer, Atlfast::MuonSmearer, and Atlfast::PhotonSmearer.

Definition at line 50 of file DefaultSmearer.cxx.

                                                                        {
    return smear(particle.momentum());
  }

HepLorentzVector Atlfast::DefaultSmearer::smear

(

const HepLorentzVector &

)

[virtual]

Smear method for HepLorentzVector

Implements Atlfast::ISmearer.

Reimplemented in Atlfast::CellSmearer, Atlfast::ElectronSmearer, Atlfast::JetSmearer, Atlfast::MuonSmearer, and Atlfast::PhotonSmearer.

Definition at line 54 of file DefaultSmearer.cxx.

                                                                      {
    // do the actual business... to fake it up, just smear in each variable ofthe four vector with width 1.0
    // for testing purposes only

    HepLorentzVector bvec;
    // set each component by smearing around the central value with width 1.0
    bvec.setE( m_randGauss->fire(avec.e(), 1.0) );
    bvec.setPx(m_randGauss->fire(avec.px(),1.0) );
    bvec.setPy(m_randGauss->fire(avec.py(),1.0) );
    bvec.setPz(m_randGauss->fire(avec.pz(),1.0) );

    return bvec;
  }

int Atlfast::DefaultSmearer::setSmearParameters

(

const std::vector< double > &

smearValues

)

[virtual]

Sets the smearing parameters

Implements Atlfast::ISmearer.

Reimplemented in Atlfast::CellSmearer, Atlfast::ElectronSmearer, Atlfast::JetSmearer, Atlfast::MuonSmearer, and Atlfast::PhotonSmearer.

Definition at line 69 of file DefaultSmearer.cxx.

                                                                                 {
    return 0;
  }

int Atlfast::DefaultSmearer::setSmearParamSchema

(

const int

smearSchema

)

[virtual]

Sets the smearing schema

Implements Atlfast::ISmearer.

Reimplemented in Atlfast::CellSmearer, Atlfast::ElectronSmearer, Atlfast::JetSmearer, Atlfast::MuonSmearer, and Atlfast::PhotonSmearer.

Definition at line 73 of file DefaultSmearer.cxx.

                                                                    {
    return 0;
  }

RandGauss* Atlfast::DefaultSmearer::randGauss

(

)

[inline]

Hook for subclasses etc. to get their hands on a randGauss object

Definition at line 65 of file DefaultSmearer.h.

{ return m_randGauss;}

RandFlat* Atlfast::DefaultSmearer::randFlat

(

)

[inline]

Hook for subclasses etc. to get their hands on a randFlat object

Definition at line 71 of file DefaultSmearer.h.

{ return m_randFlat;}

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Member Data Documentation

RandGauss* Atlfast::DefaultSmearer::m_randGauss [private]

Gaussian thrower. (you may need more coplex ones, you can add them in your derived classes)

Definition at line 93 of file DefaultSmearer.h.

RandFlat* Atlfast::DefaultSmearer::m_randFlat [private]

Flat thrower. (you may need more coplex ones, you can add them in your derived classes)

Definition at line 99 of file DefaultSmearer.h.

int Atlfast::DefaultSmearer::m_randSeed [private]

Random seed

Definition at line 107 of file DefaultSmearer.h.

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

• /afs/cern.ch/user/s/sdean/project_builds/AtlasOffline-rel_1/Simulation/Atlfast/AtlfastAlgs/AtlfastAlgs/DefaultSmearer.h
• /afs/cern.ch/user/s/sdean/project_builds/AtlasOffline-rel_1/Simulation/Atlfast/AtlfastAlgs/src/DefaultSmearer.cxx

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