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 // -*- C++ -*-
 //
 // OneCutBase.h is a part of ThePEG - Toolkit for HEP Event Generation
 // Copyright (C) 1999-2019 Leif Lonnblad
 //
 // ThePEG is licenced under version 3 of the GPL, see COPYING for details.
 // Please respect the MCnet academic guidelines, see GUIDELINES for details.
 //
 #ifndef THEPEG_OneCutBase_H
 #define THEPEG_OneCutBase_H
 //
 // This is the declaration of the OneCutBase class.
 //
 
 #include "ThePEG/Interface/Interfaced.h"
 #include "OneCutBase.fh"
 #include "Cuts.fh"
 
 namespace ThePEG {
 
 /**
  * This class corresponds to a kinematical cut to be made on a single
  * outgoing parton from a hard sub-process.
  *
  * There are four main virtual functions which must be overridden by
  * concrete sub-classes. minKT() should return the minimum allowed
  * transverse momentum of a given type, while minEta() and maxEta()
  * should return the minimum and maximum allowed pseudo-rapidity for a
  * particle of a given type as measured in the lab-system. Note that
  * when applied in the rest frame of a hard sub-process, the
  * transformation from the lab frame is assumed to be a simple boost
  * along the z-axis. In addition the passCut() function should return
  * true if a particle with a given type and given momentum will pass
  * the cuts.
  *
  * @see \ref OneCutBaseInterfaces "The interfaces"
  * defined for OneCutBase.
  */
 class OneCutBase: public Interfaced {
 
 public:
 
   /** @name Standard constructors and destructors. */
   //@{
   /**
    * The default constructor.
    */
   OneCutBase() {}
 
   /**
    * The destructor.
    */
   virtual ~OneCutBase();
   //@}
 
 public:
 
   /** @name Virtual functions to be overridden by sub-classes. */
   //@{
   /**
    * Return the minimum allowed value of the transverse momentum of an
    * outgoing parton.
    */
   virtual Energy minKT(tcPDPtr p) const = 0;
 
   /**
    * Return the minimum allowed pseudo-rapidity of an outgoing parton
    * of the given type. The pseudo-rapidity is measured in the lab
    * system.
    */
   virtual double minEta(tcPDPtr p) const = 0;
 
   /**
    * Return the maximum allowed pseudo-rapidity of an outgoing parton
    * of the given type. The pseudo-rapidity is measured in the lab
    * system.
    */
   virtual double maxEta(tcPDPtr p) const = 0;
 
   /**
    * Return the minimum allowed rapidity of an outgoing parton
    * of the given type. The rapidity is measured in the lab
    * system.
    */
   virtual double minRapidityMax(tcPDPtr p) const;
 
   /**
    * Return the maximum allowed rapidity of an outgoing parton
    * of the given type. The rapidity is measured in the lab
    * system.
    */
   virtual double maxRapidityMin(tcPDPtr p) const;
 
   /**
    * Return the minimum allowed value of the transverse momentum of
    * the outgoing parton with the lagrest transverse momentum. This
    * version simply returns minKt().
    */
   virtual Energy minMaxKT(tcPDPtr p) const;
 
   /**
    * Return the minimum allowed pseudo-rapidity of the outgoing parton
    * of the given type with the maximum pseudo-rapidity. The
    * pseudo-rapidity is measured in the lab system. This version
    * simply returns minEta().
    */
   virtual double minMaxEta(tcPDPtr p) const;
 
   /**
    * Return the maximum allowed pseudo-rapidity of the outgoing parton
    * of the given type with the minimum pseudo-rapidity.. The
    * pseudo-rapidity is measured in the lab system. This version
    * simply returns maxEta().
    */
   virtual double maxMinEta(tcPDPtr p) const;
 
   /**
    * Return true if a particle with type \a ptype and momentum \a p
    * passes the cuts. The \a parent contains information about the
    * kinematics of the hard sub-process.
    */
   virtual bool passCuts(tcCutsPtr parent,
             tcPDPtr ptype, LorentzMomentum p) const;
 
   /**
    * Return true if the given particle passes the cuts. The \a parent
    * contains information about the kinematics of the hard
    * sub-process.
    */
   bool passCuts(tcCutsPtr parent, tcPPtr p) const;
   //@}
 
   /**
    * Describe the currently active cuts in the log file.
    */
   virtual void describe() const;
 
 public:
 
   /**
    * The standard Init function used to initialize the interfaces.
    * Called exactly once for each class by the class description system
    * before the main function starts or
    * when this class is dynamically loaded.
    */
   static void Init();
 
 private:
 
   /**
    * The static object used to initialize the description of this class.
    * Indicates that this is a concrete class with persistent data.
    */
   static AbstractNoPIOClassDescription<OneCutBase> initOneCutBase;
 
   /**
    * The assignment operator is private and must never be called.
    * In fact, it should not even be implemented.
    */
   OneCutBase & operator=(const OneCutBase &) = delete;
 
 };
 
 }
 
 #include "ThePEG/Utilities/ClassTraits.h"
 
 namespace ThePEG {
 
 /** @cond TRAITSPECIALIZATIONS */
 
 /** This template specialization informs ThePEG about the
  *  base classes of OneCutBase. */
 template <>
 struct BaseClassTrait<OneCutBase,1> {
   /** Typedef of the first base class of OneCutBase. */
   typedef Interfaced NthBase;
 };
 
 /** This template specialization informs ThePEG about the name of
  *  the OneCutBase class and the shared object where it is defined. */
 template <>
 struct ClassTraits<OneCutBase>
   : public ClassTraitsBase<OneCutBase> {
   /** Return a platform-independent class name */
   static string className() { return "ThePEG::OneCutBase"; }
 };
 
 /** @endcond */
 
 }
 
 #endif /* THEPEG_OneCutBase_H */

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