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 cms::cuda::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 12 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 16 of file JetToPeakDistance.h.

Referenced by operator()().

double fftjetcms::JetToPeakDistance::phiBw_

private

Definition at line 17 of file JetToPeakDistance.h.

Referenced by operator()().