#include <TMath.h>
#include <TPDGCode.h>
#include "AliESDkink.h"
-#include "AliHelix.h"
ClassImp(AliESDkink)
}
-void AliESDkink::Update()
-{
- //
- // updates Kink Info
- //
- Float_t distance2=1000;
- //
- AliHelix dhelix1(fParamDaughter);
- AliHelix mhelix(fParamMother);
- //
- //find intersection linear
- //
- Double_t phase[2][2],radius[2];
- Double_t delta1=10000,delta2=10000;
- Int_t points=0;
- /*
- Float_t distance1=0;
- Int_t points = dhelix1.GetRPHIintersections(mhelix, phase, radius,200);
-
- if (points>0){
- dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
- }
- if (points==2){
- dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
- }
- distance1 = TMath::Min(delta1,delta2);
- */
- //
- //find intersection parabolic
- //
- points = dhelix1.GetRPHIintersections(mhelix, phase, radius,7);
-
- delta1=10000,delta2=10000;
- Double_t d1=1000.,d2=10000.;
- if (points>0){
- dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1,6);
- // dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
- Double_t xd[3],xm[3];
- dhelix1.Evaluate(phase[0][0],xd);
- mhelix.Evaluate(phase[0][1],xm);
- d1 = (xd[0]-xm[0])*(xd[0]-xm[0])+(xd[1]-xm[1])*(xd[1]-xm[1])+(xd[2]-xm[2])*(xd[2]-xm[2]);
- }
- if (points==2){
- dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2,6);
- //dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
- Double_t xd[3],xm[3];
- dhelix1.Evaluate(phase[1][0],xd);
- mhelix.Evaluate(phase[1][1],xm);
- d2 = (xd[0]-xm[0])*(xd[0]-xm[0])+(xd[1]-xm[1])*(xd[1]-xm[1])+(xd[2]-xm[2])*(xd[2]-xm[2]);
- }
- //
- distance2 = TMath::Min(delta1,delta2);
- if (delta1<delta2){
- //get V0 info
- // dhelix1.Evaluate(phase[0][0],fXr);
- Double_t xd[3],xm[3];
- dhelix1.Evaluate(phase[0][0],xd);
- mhelix.Evaluate(phase[0][1], xm);
- fXr[0] = 0.5*(xd[0]+xm[0]);
- fXr[1] = 0.5*(xd[1]+xm[1]);
- fXr[2] = 0.5*(xd[2]+xm[2]);
- //
- dhelix1.GetMomentum(phase[0][0],fPdr);
- mhelix.GetMomentum(phase[0][1],fPm);
- dhelix1.GetAngle(phase[0][0],mhelix,phase[0][1],fAngle);
- //fRr = TMath::Sqrt(radius[0]);
- fRr = TMath::Sqrt(fXr[0]*fXr[0]+fXr[1]*fXr[1]);
- }
- else{
- //dhelix1.Evaluate(phase[1][0],fXr);
- Double_t xd[3],xm[3];
- dhelix1.Evaluate(phase[1][0],xd);
- mhelix.Evaluate(phase[1][1], xm);
- fXr[0] = 0.5*(xd[0]+xm[0]);
- fXr[1] = 0.5*(xd[1]+xm[1]);
- fXr[2] = 0.5*(xd[2]+xm[2]);
- //
- dhelix1.GetMomentum(phase[1][0], fPdr);
- mhelix.GetMomentum(phase[1][1], fPm);
- dhelix1.GetAngle(phase[1][0],mhelix,phase[1][1],fAngle);
- // fRr = TMath::Sqrt(radius[1]);
- fRr = TMath::Sqrt(fXr[0]*fXr[0]+fXr[1]*fXr[1]);
- }
- fDist1 = TMath::Sqrt(TMath::Min(d1,d2));
- fDist2 = TMath::Sqrt(distance2);
- //
- //
-
-}
-
-
Float_t AliESDkink::GetTPCDensityFactor() const
{
//