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ShowerHandler.h
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ShowerHandler.h
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// -*- C++ -*-
#ifndef HERWIG_ShowerHandler_H
#define HERWIG_ShowerHandler_H
//
// This is the declaration of the <!id>ShowerHandler<!!id> class.
//
// CLASSDOC SUBSECTION Description:
//
// This class is the main driver of the shower: it is responsible for <BR>
// the proper handling of all other specific collaborating classes <BR>
// and for the storing of the produced particles in the event record.
//
// CLASSDOC SUBSECTION See also:
//
// <a href="http:CascadeHandler.html">CascadeHandler.h</a>, <BR>
// <a href="http:InsideRangeShowerEvolver.html">InsideRangeShowerEvolver.h</a>, <BR>
// <a href="http:MECorrections.html">MECorrections.h</a>, <BR>
// <a href="http:ShowerVariables.html">ShowerVariables.h</a>, <BR>
// <a href="http:ShowerParticle.html">ShowerParticle.h</a>
//
#include "ThePEG/Handlers/CascadeHandler.h"
#include "Herwig++/Utilities/GlobalParameters.h"
#include "ShowerParticle.h"
//#include "MECorrections.h"
#include "ShowerVariables.h"
#include "Evolver.h"
namespace Herwig {
using namespace ThePEG;
class ShowerHandler: public ThePEG::CascadeHandler {
public:
inline ShowerHandler();
inline ShowerHandler(const ShowerHandler &);
virtual ~ShowerHandler();
// Standard ctors and dtor.
public:
virtual void cascade();
// The main method which manages the all showering.
public:
void persistentOutput(PersistentOStream &) const;
void persistentInput(PersistentIStream &, int);
// Standard functions for writing and reading from persistent streams.
static void Init();
// Standard Init function used to initialize the interfaces.
protected:
inline virtual IBPtr clone() const;
inline virtual IBPtr fullclone() const;
// Standard clone methods.
protected:
inline virtual void doupdate() throw(UpdateException);
inline virtual void doinit() throw(InitException);
inline virtual void dofinish();
// Standard Interfaced virtual functions.
inline virtual void rebind(const TranslationMap & trans)
throw(RebindException);
// Change all pointers to Interfaced objects to corresponding clones.
inline virtual IVector getReferences();
// Return pointers to all Interfaced objects refered to by this.
private:
static ClassDescription<ShowerHandler> initShowerHandler;
// Describe a concrete class with persistent data.
ShowerHandler & operator=(const ShowerHandler &);
// Private and non-existent assignment operator.
void convertToShowerParticles(const tPartCollHdlPtr ch,
ShowerParticleVector & hardProcessParticles);
// From the ThePEG particles entering the hard subprocess, create
// the corresponding starting <!id>ShowerParticle<!!id> objects and
// put them in the vector <!id>hardProcessParticles<!!id>.
// Notice that the transformation from ThePEG <!id>ColourLine<!!id>
// objects into <!id>ShowerColourLine<!!id> ones must be properly handled.
void fillPositions();
// It fills the positions information for all the ShowerParticle
// objects in _particles, at the end of the showering.
void debuggingInfo();
// Print debugging information.
void fillEventRecord( const tPartCollHdlPtr ch );
// At the end of the Showering, transform ShowerParticle objects
// into ThePEG particles and fill the event record with them.
// Notice that the parent/child relationships and the
// transformation from ShowerColourLine objects into ThePEG
// ColourLine ones must be properly handled.
// print the particles in the step
void printStep(tStepPtr ptrStep, const string & title);
// calculate event shape variables from a given set of particles
void eventShape(const tShowerParticleVector & p,
vector<double> & lam, vector<Vector3> & n);
// calculate hard ME correction
void hardMEC(const tPartCollHdlPtr ch);
Ptr<GlobalParameters>::pointer _globalParameters;
//Ptr<MECorrections>::pointer _MECorrections;
Ptr<ShowerVariables>::pointer _showerVariables;
Ptr<Evolver>::pointer _evolver;
ShowerParticleVector _particles;
};
}
// CLASSDOC OFF
namespace ThePEG {
// The following template specialization informs ThePEG about the
// base class of ShowerHandler.
template <>
struct BaseClassTrait<Herwig::ShowerHandler,1> {
typedef ThePEG::CascadeHandler NthBase;
};
// The following template specialization informs ThePEG about the
// name of this class and the shared object where it is defined.
template <>
struct ClassTraits<Herwig::ShowerHandler>: public ClassTraitsBase<Herwig::ShowerHandler> {
static string className() { return "/Herwig++/ShowerHandler"; }
// Return the class name.
static string library() { return "libHwShower.so"; }
// Return the name of the shared library to be loaded to get
// access to this class and every other class it uses
// (except the base class).
};
}
#include "ShowerHandler.icc"
#endif /* HERWIG_ShowerHandler_H */

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