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Atlfast::DefaultSmearer Class Reference

This class provides a default implementation of the ISmearer interface. More...

#include <DefaultSmearer.h>

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List of all members.

Public Methods

 DefaultSmearer (const int aseed)
 Construct given a random number seed.

virtual ~DefaultSmearer ()
virtual HepLorentzVector smear (const HepLorentzVector &)
 Smear method decleration provided by ISmearer interface.

RandGauss * randGauss ()
 Hook for subclasses etc.


Private Attributes

RandGauss * m_randGauss
 Gaussian thrower.

int m_randSeed
 Random seed.

Detailed Description

This class provides a default implementation of the ISmearer interface.

It manages the generation of random numbers and implements the smear() function required by ISmear

Definition at line 33 of file DefaultSmearer.h.

Constructor & Destructor Documentation

Atlfast::DefaultSmearer::DefaultSmearer (  const int    aseed ) 
 

Construct given a random number seed.

Definition at line 24 of file DefaultSmearer.cxx.

References m_randGauss, and m_randSeed. 

00024                                                 {
00025     // instantiate the random number engine based on the seed and store it
00026     HepRandomEngine* randomEngine = new HepJamesRandom( aseed );
00027     m_randGauss    = new RandGauss( randomEngine );
00028     m_randSeed     = aseed;
00029   }

Atlfast::DefaultSmearer::~DefaultSmearer (    )  [virtual]
 

Definition at line 32 of file DefaultSmearer.cxx.

References m_randGauss. 

00032                                   {
00033     // we check to see if our random engine and gauss are still set and if so kill them
00034     //    if (m_randomEngine) {
00035     //      delete m_randomEngine;
00036     //    }
00037     if (m_randGauss) {
00038       delete m_randGauss;
00039     }
00040   }

Member Function Documentation

HepLorentzVector Atlfast::DefaultSmearer::smear (  const HepLorentzVector &    )  [virtual]
 

Smear method decleration provided by ISmearer interface.

Implements Atlfast::ISmearer.

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

Definition at line 42 of file DefaultSmearer.cxx.

References m_randGauss. 

00042                                                                       {
00043     // do the actual business... to fake it up, just smear in each variable ofthe four vector with width 1.0
00044     // for testing purposes only
00045 
00046     HepLorentzVector bvec;
00047     // set each component by smearing around the central value with width 1.0
00048     bvec.setE( m_randGauss->fire(avec.e(), 1.0) );
00049     bvec.setPx(m_randGauss->fire(avec.px(),1.0) );
00050     bvec.setPy(m_randGauss->fire(avec.py(),1.0) );
00051     bvec.setPz(m_randGauss->fire(avec.pz(),1.0) );
00052 
00053     return bvec;
00054   }

RandGauss* Atlfast::DefaultSmearer::randGauss (    )  [inline]
 

Hook for subclasses etc.

to get their hands on a randGauss object

Definition at line 55 of file DefaultSmearer.h.

References m_randGauss.

Referenced by Atlfast::MuonSmearer::resol2(), Atlfast::MuonSmearer::resol3(), Atlfast::MuonSmearer::resol4(), Atlfast::MuonSmearer::resolid1(), Atlfast::MuonSmearer::resolid2(), Atlfast::MuonSmearer::resolms(), Atlfast::PhotonSmearer::smear(), Atlfast::JetSmearer::smear(), Atlfast::ElectronSmearer::smear(), and Atlfast::CellSmearer::smear(). 

00055 { return m_randGauss;}

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 77 of file DefaultSmearer.h.

Referenced by DefaultSmearer(), randGauss(), smear(), and ~DefaultSmearer().

int Atlfast::DefaultSmearer::m_randSeed [private]
 

Random seed.

Definition at line 85 of file DefaultSmearer.h.

Referenced by DefaultSmearer().

The documentation for this class was generated from the following files:
Generated on Tue Mar 18 11:18:54 2003 for AtlfastAlgs by doxygen1.3-rc1