fftjetcms::JetToPeakDistance Class Reference

#include <JetToPeakDistance.h>

Public Member Functions
	JetToPeakDistance (double etaToPhiBandwidthRatio=1.0)
double	operator() (const fftjet::RecombinedJet< VectorLike > &jet, const fftjet::Peak &peak) const

Private Attributes
double	etaBw_
double	phiBw_

Detailed Description

Definition at line 9 of file JetToPeakDistance.h.

Constructor & Destructor Documentation

fftjetcms::JetToPeakDistance::JetToPeakDistance ( double  etaToPhiBandwidthRatio = 1.0 )

explicit

Definition at line 7 of file JetToPeakDistance.cc.

References assert().

        : etaBw_(sqrt(etaToPhiBandwidthRatio)),
          phiBw_(1.0/etaBw_)
    {
        assert(etaToPhiBandwidthRatio > 0.0);
    }

Member Function Documentation

double fftjetcms::JetToPeakDistance::operator()	(	const fftjet::RecombinedJet< VectorLike > &	jet,
		const fftjet::Peak &	peak
	)		const

Definition at line 14 of file JetToPeakDistance.cc.

References etaBw_, M_PI, phiBw_, and mathSSE::sqrt().

    {
        if (peak.membershipFactor() <= 0.0)
            // This peak essentially does not exist...
            return 2.0e300;

        const double deta = (j1.vec().Eta() - peak.eta())/etaBw_;
        double dphi = j1.vec().Phi() - peak.phi();
        if (dphi > M_PI)
            dphi -= (2.0*M_PI);
        else if (dphi < -M_PI)
            dphi += (2.0*M_PI);
        dphi /= phiBw_;
        return sqrt(deta*deta + dphi*dphi);
    }

Member Data Documentation

double fftjetcms::JetToPeakDistance::etaBw_

private

Definition at line 17 of file JetToPeakDistance.h.

Referenced by operator()().

double fftjetcms::JetToPeakDistance::phiBw_

private

Definition at line 18 of file JetToPeakDistance.h.

Referenced by operator()().