KinematicUtils Namespace Reference

Functions
void	EnsurePhiInMinusPiToPi (double &phi)
double	deltaPhi (double phi1, double phi2)
double	deltaR (double eta1, double eta2, double phi1, double phi2)

Function Documentation

deltaPhi()

double KinematicUtils::deltaPhi ( double phi1, double phi2 )

inline

Definition at line 104 of file D3PDMaker/TileD3PDMaker/src/ITrackTools.h.

                                            {
    EnsurePhiInMinusPiToPi(phi1);
    EnsurePhiInMinusPiToPi(phi2);
    double dPhi=phi1-phi2;
    if (dPhi>M_PI) dPhi=2*M_PI-dPhi;
    else if(dPhi<-M_PI) dPhi=2*M_PI+dPhi;
    return dPhi;
  }

deltaR()

double KinematicUtils::deltaR ( double eta1, double eta2, double phi1, double phi2 )

inline

Definition at line 114 of file D3PDMaker/TileD3PDMaker/src/ITrackTools.h.

                                                                    {
    double dPhi=KinematicUtils::deltaPhi(phi1,phi2);
    double dEta=std::fabs(eta1-eta2);
    double dR=std::sqrt(std::pow(dEta,2)+std::pow(dPhi,2));
    return dR;
  }

EnsurePhiInMinusPiToPi()

void KinematicUtils::EnsurePhiInMinusPiToPi ( double & phi )

inline

Definition at line 96 of file D3PDMaker/TileD3PDMaker/src/ITrackTools.h.

                                           {
    phi = fmod(phi, (2*M_PI));
    if (phi < -M_PI) phi += 2*M_PI;
    if (phi > M_PI)  phi -= 2*M_PI;
    return;
  }