/data/refman/pasoursint/CMSSW_5_3_0/src/GeneratorInterface/ThePEGInterface/src/RandomEngineGlue.cc

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#include <string>

#include <CLHEP/Random/RandomEngine.h>

#include <ThePEG/Interface/ClassDocumentation.h>
#include <ThePEG/Interface/InterfacedBase.h>
#include <ThePEG/Interface/Parameter.h>
#include <ThePEG/Utilities/ClassTraits.h>

#include <ThePEG/Repository/StandardRandom.h>

#include "GeneratorInterface/Core/interface/RNDMEngineAccess.h"

#include "GeneratorInterface/ThePEGInterface/interface/RandomEngineGlue.h"

using namespace ThePEG;

RandomEngineGlue::RandomEngineGlue() :
        randomEngine(&gen::getEngineReference())
{
}

RandomEngineGlue::~RandomEngineGlue()
{
}

void RandomEngineGlue::flush()
{
        RandomGenerator::flush();
        gaussSaved = false;
}

void RandomEngineGlue::fill()
{
        nextNumber = theNumbers.begin();
        for(RndVector::iterator it = nextNumber; it != theNumbers.end(); ++it)
                *it = randomEngine->flat();
}

void RandomEngineGlue::setSeed(long seed)
{
        // we ignore this, CMSSW overrides the seed from ThePEG
}

void RandomEngineGlue::doinit() throw(InitException)
{
        RandomGenerator::doinit();

        boost::shared_ptr<Proxy> proxy = Proxy::find(proxyID);
        if (!proxy)
                throw InitException();

        proxy->instance = this;
        flush();
}

ClassDescription<RandomEngineGlue> RandomEngineGlue::initRandomEngineGlue;

void RandomEngineGlue::Init() {
        typedef Proxy::ProxyID ProxyID;

        static ClassDocumentation<RandomEngineGlue> documentation
                ("Interface to the CMSSW RandomNumberEngine.");
        static Parameter<RandomEngineGlue, ProxyID> interfaceProxyID
                ("ProxyID", "The ProxyID.",
                 &RandomEngineGlue::proxyID, ProxyID(),
                 ProxyID(), ProxyID(), false, false, false);

        interfaceProxyID.rank(11);
}