EdbMomentumEstimator.cxx File Reference

#include "TString.h"
#include "TCanvas.h"
#include "TStyle.h"
#include "TMath.h"
#include "TF1.h"
#include "TArrayF.h"
#include "TVectorF.h"
#include "TVector.h"
#include "TGraph2D.h"
#include "TGraphErrors.h"
#include "TGraphAsymmErrors.h"
#include "EdbLog.h"
#include "EdbPhys.h"
#include "EdbAffine.h"
#include "EdbMomentumEstimator.h"

Include dependency graph for EdbMomentumEstimator.cxx:

Functions
double	CalcTheta (const EdbSegP &s1, const EdbSegP &s2)
	ClassImp (EdbMomentumEstimator)

Function Documentation

CalcTheta()

double CalcTheta	(	const EdbSegP &	s1,
		const EdbSegP &	s2
	)

                                                      {
  double S1 =s1.TX()*s1.TX()+s1.TY()*s1.TY()+1;
  double S2 =s2.TX()*s2.TX()+s2.TY()*s2.TY()+1;
  double S12=s1.TX()*s2.TX()+s1.TY()*s2.TY()+1;
  double cosTheta2=S12*S12/(S1*S2);
  return 1-cosTheta2;
}

ClassImp()

ClassImp

(

EdbMomentumEstimator

)