JEvtWeight.hh

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#ifndef __JAANET__JEVTWEIGHT__
#define __JAANET__JEVTWEIGHT__
 
#include "km3net-dataformat/definitions/weightlist.hh"
 
#include "km3net-dataformat/offline/Evt.hh"
 
#include "JLang/JClonable.hh"
 
#include "JAAnet/JEvtWeightInterface.hh"
 
 
/**
 * \author mdejong, bjjung
 */
 
namespace JAANET {}
namespace JPP { using namespace JAANET; }
 
namespace JAANET {
 
  using JLANG::JClonable;
 
  
  /**
   * Abstract base class for event weighing.
   */
  struct JEvtWeight :
    public JEvtWeightInterface,
    public JClonable<JEvtWeight>
  {
    /**
     * Default constructor.
     */
    JEvtWeight() : normalisation(1.0)
    {}
 
 
    /**
     * Virtual destructor.
     */
    virtual ~JEvtWeight()
    {}
 
    
    /**
     * Get event-weight normalisation.
     * Note: the return-value should be *multiplied* in order to normalise the event-weight
     *
     * \return                   event-weight normalisation
     */
    virtual double getNormalisation() const override
    {
      return normalisation;
    }
    
 
    /**
     * Get event-weight normalisation.
     * Note: the return-value should be *multiplied* in order to normalise the event-weight
     *
     * \param  evt               event
     * \return                   event-weight normalisation
     */
    virtual double getNormalisation(const Evt& evt) const
    {
      return (evt.w.size() > WEIGHTLIST_NORMALISATION &&
              evt.w[WEIGHTLIST_NORMALISATION] > 0.0 ?
              evt.w[WEIGHTLIST_NORMALISATION] : normalisation);
    }
 
 
    /**
     * Set event-weight normalisation factor.
     * Note: the set-value should be *multiplied* in order to normalise the event-weight
     *
     * \param  normalisation     event-weight normalisation factor.
     */
    virtual void setNormalisation(const double normalisation) override
    {
      this->normalisation = normalisation;
    }
    
 
  protected:
 
    double normalisation; //!< Event-weight normalisation
  };
}
 
#endif