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RandomEngine Class Reference

#include <FastSimulation/Utilities/interface/RandomEngine.h>

List of all members.

Public Member Functions
double	flatShoot (double xmin=0.0, double xmax=1.0) const
double	gaussShoot (double mean=0.0, double sigma=1.0) const
unsigned int	poissonShoot (double mean) const
	RandomEngine (edm::RandomNumberGenerator *rng)
CLHEP::HepRandomEngine *	theEngine () const
edm::RandomNumberGenerator *	theRandomNumberGenerator () const
	~RandomEngine ()
Private Attributes
CLHEP::HepRandomEngine *	engine_
CLHEP::RandFlat *	flatDistribution_
CLHEP::RandGauss *	gaussianDistribution_
CLHEP::RandPoisson *	poissonDistribution_
edm::RandomNumberGenerator *	rng_
TRandom3 *	rootEngine_

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Detailed Description

Definition at line 18 of file RandomEngine.h.

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Constructor & Destructor Documentation

RandomEngine::RandomEngine

(

edm::RandomNumberGenerator *

rng

)

Definition at line 5 of file RandomEngine.cc.

References engine_, flatDistribution_, gaussianDistribution_, edm::RandomNumberGenerator::getEngine(), poissonDistribution_, and rootEngine_.

  : 
  rng_(rng),
  rootEngine_(0)
{
  // The service engine
  engine_ = &(rng->getEngine());
  // Get the TRandom3 egine, to benefit from Root functional random generation
  if ( engine_->name() == "TRandom3" )
    rootEngine_ = ( (edm::TRandomAdaptor*) engine_ )->getRootEngine();
  // If no root engine, use the CLHEP wrapper.
  if ( !rootEngine_ ) { 
    flatDistribution_ = new CLHEP::RandFlat(*engine_);
    gaussianDistribution_ = new CLHEP::RandGaussQ(*engine_);
    poissonDistribution_ = new CLHEP::RandPoissonQ(*engine_);
  }
}

RandomEngine::~RandomEngine

(

)

Definition at line 23 of file RandomEngine.cc.

References flatDistribution_, gaussianDistribution_, poissonDistribution_, and rootEngine_.

{
  if ( !rootEngine_ ) { 
    delete flatDistribution_;
    delete gaussianDistribution_;
    delete poissonDistribution_;  
  }
}

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Member Function Documentation

double RandomEngine::flatShoot	(	double	xmin = 0.0,
		double	xmax = 1.0
	)			const [inline]

Definition at line 30 of file RandomEngine.h.

References flatDistribution_, and rootEngine_.

Referenced by EcalHitMaker::addHit(), PileUpProducer::beginJob(), BremsstrahlungSimulator::brem(), NuclearInteractionSimulator::compute(), EMShower::compute(), PairProductionSimulator::compute(), HFShower::compute(), HDShower::compute(), MultipleScatteringSimulator::compute(), HDRShower::computeShower(), CalorimetryManager::EMShowerSimulation(), GammaFunctionGenerator::gammaFrac(), GammaFunctionGenerator::gammaInt(), SiTrackerGaussianSmearingRecHitConverter::gaussianSmearing(), PairProductionSimulator::gbteth(), BremsstrahlungSimulator::gbteth(), FlatPrimaryVertexGenerator::generate(), BaseNumericalRandomGenerator::generate(), BaseNumericalRandomGenerator::generateExp(), BaseNumericalRandomGenerator::generateLin(), HDRShower::getR(), HDShower::HDShower(), HFShower::HFShower(), ParticlePropagator::initProperDecayTime(), HCALResponse::interMU(), FML3EfficiencyHandler::kill(), FMGLfromL3EfficiencyHandler::kill(), FML1EfficiencyHandler::kill(), FMGLfromTKEfficiencyHandler::kill(), FMGLfromL3TKEfficiencyHandler::kill(), HFShower::makeSteps(), HDShower::makeSteps(), HcalRecHitsMaker::noisifySubdet(), EcalPreshowerRecHitsMaker::noisifySubdet(), NuclearInteractionSimulator::NuclearInteractionSimulator(), BremsstrahlungSimulator::poisson(), PileUpProducer::produce(), HDRShower::setHit(), GaussianTail::shoot(), FML1PtSmearer::smear(), SiPixelGaussianSmearingRecHitConverterAlgorithm::smearHit(), HDRShower::thetaFunction(), and TrajectoryManager::TrajectoryManager().

                                                                 { 
    return rootEngine_ ? 
      xmin + (xmax-xmin) * rootEngine_->Rndm()
      :
      xmin + (xmax-xmin)*flatDistribution_->fire();
  }

double RandomEngine::gaussShoot	(	double	mean = 0.0,
		double	sigma = 1.0
	)			const [inline]

Definition at line 37 of file RandomEngine.h.

References gaussianDistribution_, mean(), and rootEngine_.

Referenced by RadialInterval::addInterval(), EMShower::compute(), HFShower::compute(), MultipleScatteringSimulator::compute(), HcalRecHitsMaker::Fill(), EcalPreshowerRecHitsMaker::Fill(), BetaFuncPrimaryVertexGenerator::generate(), GaussianPrimaryVertexGenerator::generate(), CalorimetryManager::HDShowerSimulation(), EcalBarrelRecHitsMaker::loadEcalBarrelRecHits(), EcalEndcapRecHitsMaker::loadEcalEndcapRecHits(), HcalRecHitsMaker::noisifySubdet(), CalorimetryManager::reconstructECAL(), CalorimetryManager::reconstructHCAL(), GaussianTail::shoot(), FML3PtSmearer::smear(), SiStripGaussianSmearingRecHitConverterAlgorithm::smearHit(), and HDRShower::thetaFunction().

                                                                    { 
    return rootEngine_ ?
      rootEngine_->Gaus(mean,sigma)
      : 
      mean + sigma*gaussianDistribution_->fire();
  }

unsigned int RandomEngine::poissonShoot

(

double

mean

)

const [inline]

Definition at line 44 of file RandomEngine.h.

References poissonDistribution_, and rootEngine_.

Referenced by EMShower::compute(), HcalRecHitsMaker::noisifySubdet(), EcalPreshowerRecHitsMaker::noisifySubdet(), and PileUpProducer::produce().

                                                     { 
    return rootEngine_ ? 
      rootEngine_->Poisson(mean)
      :
      poissonDistribution_->fire(mean);
  }

CLHEP::HepRandomEngine* RandomEngine::theEngine

(

)

const [inline]

Definition at line 24 of file RandomEngine.h.

References engine_.

{ return engine_; }

edm::RandomNumberGenerator* RandomEngine::theRandomNumberGenerator

(

)

const [inline]

Definition at line 22 of file RandomEngine.h.

References rng_.

{return rng_;}

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Member Data Documentation

CLHEP::HepRandomEngine* RandomEngine::engine_ [private]

Definition at line 58 of file RandomEngine.h.

Referenced by RandomEngine(), and theEngine().

CLHEP::RandFlat* RandomEngine::flatDistribution_ [private]

Definition at line 55 of file RandomEngine.h.

Referenced by flatShoot(), RandomEngine(), and ~RandomEngine().

CLHEP::RandGauss* RandomEngine::gaussianDistribution_ [private]

Definition at line 56 of file RandomEngine.h.

Referenced by gaussShoot(), RandomEngine(), and ~RandomEngine().

CLHEP::RandPoisson* RandomEngine::poissonDistribution_ [private]

Definition at line 57 of file RandomEngine.h.

Referenced by poissonShoot(), RandomEngine(), and ~RandomEngine().

edm::RandomNumberGenerator* RandomEngine::rng_ [private]

Definition at line 53 of file RandomEngine.h.

Referenced by theRandomNumberGenerator().

TRandom3* RandomEngine::rootEngine_ [private]

Definition at line 60 of file RandomEngine.h.

Referenced by flatShoot(), gaussShoot(), poissonShoot(), RandomEngine(), and ~RandomEngine().

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

• FastSimulation/Utilities/interface/RandomEngine.h
• FastSimulation/Utilities/src/RandomEngine.cc

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