/[PAMELA software]/DarthVader/TrackerLevel2/src/TrkLevel2.cpp

Diff of /DarthVader/TrackerLevel2/src/TrkLevel2.cpp

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-revision 1.5 by pam-fi,
Fri Jun 30 09:48:15 2006 UTC
+revision 1.32 by pam-fi,
Fri Apr 27 10:39:57 2007 UTC
 Line 4
   */
  #include <TrkLevel2.h>
  #include <iostream>
+ #include <math.h>
  using namespace std;
  //......................................
  // F77 routines
-Line 11 
 using namespace std;
+Line 12 
 using namespace std;
  extern "C" {
      void dotrack_(int*, double*, double*, double*, double*, int*);
      void dotrack2_(int*, double*, double*, double*, double*,double*, double*, double*,int*);
-     int  readb_(const char*);
+      void mini2_(int*,int*,int*);
+      void guess_();
+      void gufld_(float*, float*);
  }
  //--------------------------------------
  //
  //
  //--------------------------------------
  TrkTrack::TrkTrack(){
+ //    cout << "TrkTrack::TrkTrack()" << endl;
      seqno = -1;
      image = -1;
      chi2  = 0;
+     nstep = 0;
      for(int it1=0;it1<5;it1++){
          al[it1] = 0;
-         for(int it2=0;it2<5;it2++)
+         for(int it2=0;it2<5;it2++)coval[it1][it2] = 0;
-             coval[it1][it2] = 0;
      };
      for(int ip=0;ip<6;ip++){
          xgood[ip]  = 0;
-Line 34 
 TrkTrack::TrkTrack(){
+Line 39 
 TrkTrack::TrkTrack(){
          zm[ip]     = 0;
          resx[ip]   = 0;
          resy[ip]   = 0;
+         tailx[ip]   = 0;
+         taily[ip]   = 0;
          xv[ip]     = 0;
          yv[ip]     = 0;
          zv[ip]     = 0;
-Line 41 
 TrkTrack::TrkTrack(){
+Line 48 
 TrkTrack::TrkTrack(){
          ayv[ip]    = 0;
          dedx_x[ip] = 0;
          dedx_y[ip] = 0;
      };
+ //    clx = 0;
+ //    cly = 0;
+ //    clx = new TRefArray(6,0); //forse causa memory leak???
+ //    cly = new TRefArray(6,0); //forse causa memory leak???
+ //    clx = TRefArray(6,0);
+ //    cly = TRefArray(6,0);
  };
  //--------------------------------------
  //
-Line 51 
 TrkTrack::TrkTrack(const TrkTrack& t){
+Line 65 
 TrkTrack::TrkTrack(const TrkTrack& t){
      seqno = t.seqno;
      image = t.image;
      chi2  = t.chi2;
+     nstep = t.nstep;
      for(int it1=0;it1<5;it1++){
          al[it1] = t.al[it1];
-         for(int it2=0;it2<5;it2++)
+         for(int it2=0;it2<5;it2++)coval[it1][it2] = t.coval[it1][it2];
-             coval[it1][it2] = t.coval[it1][it2];
      };
      for(int ip=0;ip<6;ip++){
          xgood[ip]  = t.xgood[ip];
-Line 64 
 TrkTrack::TrkTrack(const TrkTrack& t){
+Line 78 
 TrkTrack::TrkTrack(const TrkTrack& t){
          zm[ip]     = t.zm[ip];
          resx[ip]   = t.resx[ip];
          resy[ip]   = t.resy[ip];
+         tailx[ip]  = t.tailx[ip];
+         taily[ip]  = t.taily[ip];
          xv[ip]     = t.xv[ip];
          yv[ip]     = t.yv[ip];
          zv[ip]     = t.zv[ip];
-Line 71 
 TrkTrack::TrkTrack(const TrkTrack& t){
+Line 87 
 TrkTrack::TrkTrack(const TrkTrack& t){
          ayv[ip]    = t.ayv[ip];
          dedx_x[ip] = t.dedx_x[ip];
          dedx_y[ip] = t.dedx_y[ip];
      };
+ //    clx = 0;
+ //    cly = 0;
+ //    if(t.clx)clx = new TRefArray(*(t.clx));
+ //    if(t.cly)cly = new TRefArray(*(t.cly));
+ //    clx = TRefArray(t.clx);
+ //    cly = TRefArray(t.cly);
+ };
+ //--------------------------------------
+ //
+ //
+ //--------------------------------------
+ void TrkTrack::Copy(TrkTrack& t){
+     t.seqno = seqno;
+     t.image = image;
+     t.chi2  = chi2;
+     t.nstep = nstep;
+     for(int it1=0;it1<5;it1++){
+         t.al[it1] = al[it1];
+         for(int it2=0;it2<5;it2++)t.coval[it1][it2] = coval[it1][it2];
+     };
+     for(int ip=0;ip<6;ip++){
+         t.xgood[ip]  = xgood[ip];
+         t.ygood[ip]  = ygood[ip];
+         t.xm[ip]     = xm[ip];
+         t.ym[ip]     = ym[ip];
+         t.zm[ip]     = zm[ip];
+         t.resx[ip]   = resx[ip];
+         t.resy[ip]   = resy[ip];
+         t.tailx[ip]  = tailx[ip];
+         t.taily[ip]  = taily[ip];
+         t.xv[ip]     = xv[ip];
+         t.yv[ip]     = yv[ip];
+         t.zv[ip]     = zv[ip];
+         t.axv[ip]    = axv[ip];
+         t.ayv[ip]    = ayv[ip];
+         t.dedx_x[ip] = dedx_x[ip];
+         t.dedx_y[ip] = dedx_y[ip];
+     };
+ //    t.clx = TRefArray(clx);
+ //    t.cly = TRefArray(cly);
  };
  //--------------------------------------
  //
-Line 96 
 int TrkTrack::DoTrack(Trajectory* t){
+Line 157 
 int TrkTrack::DoTrack(Trajectory* t){
      for (int i=0; i<5; i++)         dal[i]  = (double)al[i];
      for (int i=0; i<t->npoint; i++) dzin[i] = (double)t->z[i];
+     TrkParams::Load(1);
+     if( !TrkParams::IsLoaded(1) ){
+         cout << "int TrkTrack::DoTrack(Trajectory* t) --- ERROR --- m.field not loaded"<<endl;
+         return 0;
+     }
      dotrack_(&(t->npoint),dzin,dxout,dyout,dal,&ifail);
      for (int i=0; i<t->npoint; i++){
-Line 135 
 int TrkTrack::DoTrack2(Trajectory* t){
+Line 201 
 int TrkTrack::DoTrack2(Trajectory* t){
      for (int i=0; i<5; i++)         dal[i]  = (double)al[i];
      for (int i=0; i<t->npoint; i++) dzin[i] = (double)t->z[i];
+     TrkParams::Load(1);
+     if( !TrkParams::IsLoaded(1) ){
+         cout << "int TrkTrack::DoTrack2(Trajectory* t) --- ERROR --- m.field not loaded"<<endl;
+         return 0;
+     }
      dotrack2_(&(t->npoint),dzin,dxout,dyout,dthxout,dthyout,dtlout,dal,&ifail);
      for (int i=0; i<t->npoint; i++){
-Line 174 
 Float_t TrkTrack::GetDeflection(){
+Line 245 
 Float_t TrkTrack::GetDeflection(){
          return def;
  };
  //
- Float_t TrkTrack::GetDEDX(){
+ /**
-         Float_t dedx=0;
+  * Method to retrieve the dE/dx measured on a tracker view.
-         for(Int_t i=0; i<6; i++)dedx+=dedx_x[i]*xgood[i]+dedx_y[i]*ygood[i];
+  * @param ip plane (0-5)
-         dedx = dedx/(this->GetNX()+this->GetNY());
+  * @param iv view (0=x 1=y)
-         return dedx;
+  */
+ Float_t TrkTrack::GetDEDX(int ip, int iv){
+     if(iv==0 && ip>=0 && ip<6)return fabs(dedx_x[ip]);
+     else if(iv==1 && ip>=0 && ip<6)return fabs(dedx_y[ip]);
+     else {
+         cout << "TrkTrack::GetDEDX(int ip, int iv) -- wrong input parameters "<<ip<<iv<<endl;
+         return 0.;
+     }
+ }
+ /**
+  * Method to evaluate the dE/dx measured on a tracker plane.
+  * The two measurements on x- and y-view are averaged.
+  * @param ip plane (0-5)
+  */
+ Float_t TrkTrack::GetDEDX(int ip){
+     if( (Int_t)XGood(ip)+(Int_t)YGood(ip) == 0 ) return 0;
+     return (GetDEDX(ip,0)+GetDEDX(ip,1))/((Int_t)XGood(ip)+(Int_t)YGood(ip));
  };
+ /**
+  * Method to evaluate the dE/dx averaged over all planes.
+  */
+ Float_t TrkTrack::GetDEDX(){
+     Float_t dedx=0;
+     for(Int_t ip=0; ip<6; ip++)dedx+=GetDEDX(ip,0)*XGood(ip)+GetDEDX(ip,1)*YGood(ip);
+     dedx = dedx/(GetNX()+GetNY());
+     return dedx;
+ };
+ /**
+  * Returns 1 if the cluster on a tracker view includes bad strips.
+  * @param ip plane (0-5)
+  * @param iv view (0=x 1=y)
+  */
+ Bool_t TrkTrack::IsBad(int ip,int iv){
+     if(iv==0 && ip>=0 && ip<6)return (xgood[ip]<0) ;
+     else if(iv==1 && ip>=0 && ip<6)return (ygood[ip]<0) ;
+     else {
+         cout << "TrkTrack::IsBad(int ip, int iv) -- wrong input parameters "<<ip<<iv<<endl;
+         return 0.;
+     }
+ };
+ /**
+  * Returns 1 if the signal on a tracker view is saturated.
+  * @param ip plane (0-5)
+  * @param iv view (0=x 1=y)
+  */
+ Bool_t TrkTrack::IsSaturated(int ip,int iv){
+     if(iv==0 && ip>=0 && ip<6)return (dedx_x[ip]<0) ;
+     else if(iv==1 && ip>=0 && ip<6)return (dedx_y[ip]<0) ;
+     else {
+         cout << "TrkTrack::IsSaturated(int ip, int iv) -- wrong input parameters "<<ip<<iv<<endl;
+         return 0.;
+     }
+ };
+ /**
+  * Returns 1 if either the x or the y signal on a tracker plane is saturated.
+  * @param ip plane (0-5)
+  */
+ Bool_t TrkTrack::IsSaturated(int ip){
+     return (IsSaturated(ip,0)||IsSaturated(ip,1));
+ };
+ /**
+  * Returns 1 if there is at least a saturated signal along the track.
+  */
+ Bool_t TrkTrack::IsSaturated(){
+     for(int ip=0; ip<6; ip++)for(int iv=0; iv<2; iv++)if(IsSaturated(ip,iv))return true;
+     return false;
+ }
+ /**
+  * Returns the track "lever-arm" on the x view, defined as the distance (in planes) between
+  * the upper and lower x measurements (the maximum value of lever-arm is 6).
+  */
+ Int_t TrkTrack::GetLeverArmX(){
+     int first_plane = -1;
+     int last_plane  = -1;
+     for(Int_t ip=0; ip<6; ip++){
+         if( XGood(ip) && first_plane == -1 )first_plane = ip;
+         if( XGood(ip) && first_plane != -1 )last_plane = ip;
+     }
+     if( first_plane == -1 || last_plane == -1){
+         cout<< "Int_t TrkTrack::GetLeverArmX() -- XGood(ip) always false ??? "<<endl;
+         return 0;
+     }
+     return (last_plane-first_plane+1);
+ }
+ /**
+  * Returns the track "lever-arm" on the y view, defined as the distance (in planes) between
+  * the upper and lower y measurements (the maximum value of lever-arm is 6).
+  */
+ Int_t TrkTrack::GetLeverArmY(){
+     int first_plane = -1;
+     int last_plane  = -1;
+     for(Int_t ip=0; ip<6; ip++){
+         if( YGood(ip) && first_plane == -1 )first_plane = ip;
+         if( YGood(ip) && first_plane != -1 )last_plane = ip;
+     }
+     if( first_plane == -1 || last_plane == -1){
+         cout<< "Int_t TrkTrack::GetLeverArmY() -- YGood(ip) always false ??? "<<endl;
+         return 0;
+     }
+     return (last_plane-first_plane+1);
+ }
  //--------------------------------------
  //
  //
  //--------------------------------------
  void TrkTrack::Dump(){
      cout << endl << "========== Track " ;
+     cout << endl << "seq.  n. : "<< seqno;
+     cout << endl << "image n. : "<< image;
      cout << endl << "al       : "; for(int i=0; i<5; i++)cout << al[i] << " ";
      cout << endl << "chi^2    : "<< chi2;
-     cout << endl << "xgood    : "; for(int i=0; i<6; i++)cout << xgood[i] ;
+     cout << endl << "n.step   : "<< nstep;
-     cout << endl << "ygood    : "; for(int i=0; i<6; i++)cout << ygood[i] ;
+     cout << endl << "xgood    : "; for(int i=0; i<6; i++)cout << XGood(i) ;
+     cout << endl << "ygood    : "; for(int i=0; i<6; i++)cout << YGood(i) ;
      cout << endl << "xm       : "; for(int i=0; i<6; i++)cout << xm[i] << " ";
      cout << endl << "ym       : "; for(int i=0; i<6; i++)cout << ym[i] << " ";
      cout << endl << "zm       : "; for(int i=0; i<6; i++)cout << zm[i] << " ";
+     cout << endl << "xv       : "; for(int i=0; i<6; i++)cout << xv[i] << " ";
+     cout << endl << "yv       : "; for(int i=0; i<6; i++)cout << yv[i] << " ";
+     cout << endl << "zv       : "; for(int i=0; i<6; i++)cout << zv[i] << " ";
+     cout << endl << "resx     : "; for(int i=0; i<6; i++)cout << resx[i] << " ";
+     cout << endl << "resy     : "; for(int i=0; i<6; i++)cout << resy[i] << " ";
+     cout << endl << "coval    : "; for(int i=0; i<5; i++)cout << coval[0][i]<<" ";
+     cout << endl << "           "; for(int i=0; i<5; i++)cout << coval[1][i]<<" ";
+     cout << endl << "           "; for(int i=0; i<5; i++)cout << coval[2][i]<<" ";
+     cout << endl << "           "; for(int i=0; i<5; i++)cout << coval[3][i]<<" ";
+     cout << endl << "           "; for(int i=0; i<5; i++)cout << coval[4][i]<<" ";
      cout << endl << "dedx_x   : "; for(int i=0; i<6; i++)cout << dedx_x[i] << " ";
      cout << endl << "dedx_y   : "; for(int i=0; i<6; i++)cout << dedx_y[i] << " ";
+     cout << endl;
+ }
+ /**
+  * Set the TrkTrack position measurements
+  */
+ void TrkTrack::SetMeasure(double *xmeas, double *ymeas, double *zmeas){
+     for(int i=0; i<6; i++) xm[i]=*xmeas++;
+     for(int i=0; i<6; i++) ym[i]=*ymeas++;
+     for(int i=0; i<6; i++) zm[i]=*zmeas++;
+ }
+ /**
+  * Set the TrkTrack position resolution
+  */
+ void TrkTrack::SetResolution(double *rx, double *ry){
+     for(int i=0; i<6; i++) resx[i]=*rx++;
+     for(int i=0; i<6; i++) resy[i]=*ry++;
+ }
+ /**
+  * Set the TrkTrack good measurement
+  */
+ void TrkTrack::SetGood(int *xg, int *yg){
+     // NB! si perdera` l'informazione sul numero del cluster
+     for(int i=0; i<6; i++) xgood[i]=*xg++;
+     for(int i=0; i<6; i++) ygood[i]=*yg++;
+ }
+ /**
+  * Load the magnetic field
+  */
+ void TrkTrack::LoadField(TString path){
+ //     strcpy(path_.path,path.Data());
+ //     path_.pathlen = path.Length();
+ //     path_.error   = 0;
+ //     readb_();
+     TrkParams::Set(path,1);
+     TrkParams::Load(1);
+ };
+ /**
+  * Method to fill minimization-routine common
+  */
+ void TrkTrack::FillMiniStruct(cMini2track& track){
+     for(int i=0; i<6; i++){
+ //      track.xgood[i]=xgood[i];
+ //      track.ygood[i]=ygood[i];
+         track.xgood[i]=XGood(i);
+         track.ygood[i]=YGood(i);
+         track.xm[i]=xm[i];
+         track.ym[i]=ym[i];
+         track.zm[i]=zm[i];
+ //      --- temporaneo ----------------------------
+ //      andrebbe inserita la dimensione del sensore
+         float segment = 100.;
+         track.xm_a[i]=xm[i];
+         track.xm_b[i]=xm[i];
+         track.ym_a[i]=ym[i];
+         track.ym_b[i]=ym[i];
+         if(       XGood(i) && !YGood(i) ){
+             track.ym_a[i] = track.ym_a[i]+segment;
+             track.ym_b[i] = track.ym_b[i]-segment;
+         }else if( !XGood(i) && YGood(i)){
+             track.xm_a[i] = track.xm_a[i]+segment;
+             track.xm_b[i] = track.xm_b[i]-segment;
+         }
+ //      --- temporaneo ----------------------------
+         track.resx[i]=resx[i];
+         track.resy[i]=resy[i];
+     }
+     for(int i=0; i<5; i++) track.al[i]=al[i];
+     track.zini = 23.5;
+ // ZINI = 23.5 !!! it should be the same parameter in all codes
  }
+ /**
+  * Method to set values from  minimization-routine common
+  */
+ void TrkTrack::SetFromMiniStruct(cMini2track *track){
+     for(int i=0; i<5; i++) {
+         al[i]=track->al[i];
+         for(int j=0; j<5; j++) coval[i][j]=track->cov[i][j];
+     }
+     chi2  = track->chi2;
+     nstep = track->nstep;
+     for(int i=0; i<6; i++){
+         xv[i]  = track->xv[i];
+         yv[i]  = track->yv[i];
+         zv[i]  = track->zv[i];
+         xm[i]  = track->xm[i];
+         ym[i]  = track->ym[i];
+         zm[i]  = track->zm[i];
+         axv[i] = track->axv[i];
+         ayv[i] = track->ayv[i];
+     }
+ }
+ /**
+  * Tracking method. It calls F77 mini routine.
+  */
+ void TrkTrack::Fit(double pfixed, int& fail, int iprint){
+     float al_ini[] = {0.,0.,0.,0.,0.};
+     extern cMini2track track_;
+     fail = 0;
+     FillMiniStruct(track_);
+     // if fit variables have been reset, evaluate the initial guess
+     if(al[0]==-9999.&&al[1]==-9999.&&al[2]==-9999.&&al[3]==-9999.&&al[4]==-9999.)guess_();
+     // --------------------- free momentum
+     if(pfixed==0.) {
+         track_.pfixed=0.;
+     }
+     // --------------------- fixed momentum
+     if(pfixed!=0.) {
+         al[4]=1./pfixed;
+         track_.pfixed=pfixed;
+     }
+     //  store temporarily the initial guess
+     for(int i=0; i<5; i++) al_ini[i]=track_.al[i];
+     //  ------------------------------------------
+     //  call mini routine
+     TrkParams::Load(1);
+     if( !TrkParams::IsLoaded(1) ){
+         cout << "void TrkTrack::Fit(double pfixed, int& fail, int iprint) --- ERROR --- m.field not loaded"<<endl;
+         return;
+     }
+     int istep=0;
+     int ifail=0;
+     mini2_(&istep,&ifail, &iprint);
+     if(ifail!=0) {
+         if(iprint)cout << "ERROR: ifail= " << ifail << endl;
+         fail = 1;
+     }
+     //  ------------------------------------------
+     SetFromMiniStruct(&track_);
+ //    cout << endl << "eta ===> " << track_.al[4] << endl;
+ //     for(int i=0; i<5; i++) al[i]=track_.al[i];
+ //     chi2=track_.chi2;
+ //     nstep=track_.nstep;
+ //     for(int i=0; i<6; i++) xv[i]=track_.xv[i];
+ //     for(int i=0; i<6; i++) yv[i]=track_.yv[i];
+ //     for(int i=0; i<6; i++) zv[i]=track_.zv[i];
+ //     for(int i=0; i<6; i++) axv[i]=track_.axv[i];
+ //     for(int i=0; i<6; i++) ayv[i]=track_.ayv[i];
+ //     for(int i=0; i<5; i++) {
+ //      for(int j=0; j<5; j++) coval[i][j]=track_.cov[i][j];
+ //     }
+     if(fail){
+         if(iprint)cout << " >>>> fit failed >>>> drawing initial par"<<endl;
+         for(int i=0; i<5; i++) al[i]=al_ini[i];
+     }
+ };
+ /*
+  * Reset the fit parameters
+  */
+ void TrkTrack::FitReset(){
+     for(int i=0; i<5; i++) al[i]=-9999.;
+     chi2=0.;
+     nstep=0;
+     for(int i=0; i<6; i++) xv[i]=0.;
+     for(int i=0; i<6; i++) yv[i]=0.;
+     for(int i=0; i<6; i++) zv[i]=0.;
+     for(int i=0; i<6; i++) axv[i]=0.;
+     for(int i=0; i<6; i++) ayv[i]=0.;
+     for(int i=0; i<5; i++) {
+         for(int j=0; j<5; j++) coval[i][j]=0.;
+     }
+ }
+ /*
+  * Set the tracking mode
+  */
+ void TrkTrack::SetTrackingMode(int trackmode){
+     extern cMini2track track_;
+     track_.trackmode = trackmode;
+ }
+ /*
+  * Set the factor scale for tracking precision
+  */
+ void TrkTrack::SetPrecisionFactor(double fact){
+     extern cMini2track track_;
+     track_.fact = fact;
+ }
+ /*
+  * Set the factor scale for tracking precision
+  */
+ void TrkTrack::SetStepMin(int istepmin){
+     extern cMini2track track_;
+     track_.istepmin = istepmin;
+ }
+ /*
+  * Method to retrieve ID (0,1,...) of x-cluster (if any) associated to this track.
+  * If no cluster is associated, ID=-1.
+  * @param ip Tracker plane (0-5)
+  */
+ Int_t TrkTrack::GetClusterX_ID(int ip){
+     return ((Int_t)fabs(xgood[ip]))%10000000-1;
+ };
+ /*
+  * Method to retrieve ID (0-xxx) of y-cluster (if any) associated to this track.
+  * If no cluster is associated, ID=-1.
+  * @param ip Tracker plane (0-5)
+  */
+ Int_t TrkTrack::GetClusterY_ID(int ip){
+     return ((Int_t)fabs(ygood[ip]))%10000000-1;
+ };
+ /*
+  * Method to retrieve the ladder (0-4, increasing x) traversed by the track on this plane.
+  * If no ladder is traversed (dead area) the metod retuns -1.
+  * @param ip Tracker plane (0-5)
+  */
+ Int_t TrkTrack::GetLadder(int ip){
+     if(XGood(ip))return (Int_t)fabs(xgood[ip]/100000000)-1;
+     if(YGood(ip))return (Int_t)fabs(ygood[ip]/100000000)-1;
+     return -1;
+ };
+ /*
+  * Method to retrieve the sensor (0-1, increasing y) traversed by the track on this plane.
+  * If no sensor is traversed (dead area) the metod retuns -1.
+  * @param ip Tracker plane (0-5)
+  */
+ Int_t TrkTrack::GetSensor(int ip){
+     if(XGood(ip))return (Int_t)((Int_t)fabs(xgood[ip]/10000000)%10)-1;
+     if(YGood(ip))return (Int_t)((Int_t)fabs(ygood[ip]/10000000)%10)-1;
+     return -1;
+ };
+ //--------------------------------------
+ //
+ //
+ //--------------------------------------
+ void TrkTrack::Clear(){
+ //    cout << "TrkTrack::Clear()"<<endl;
+     seqno = -1;
+     image = -1;
+     chi2  = 0;
+     nstep = 0;
+     for(int it1=0;it1<5;it1++){
+         al[it1] = 0;
+         for(int it2=0;it2<5;it2++)coval[it1][it2] = 0;
+     };
+     for(int ip=0;ip<6;ip++){
+         xgood[ip]  = 0;
+         ygood[ip]  = 0;
+         xm[ip]     = 0;
+         ym[ip]     = 0;
+         zm[ip]     = 0;
+         resx[ip]   = 0;
+         resy[ip]   = 0;
+         tailx[ip]  = 0;
+         taily[ip]  = 0;
+         xv[ip]     = 0;
+         yv[ip]     = 0;
+         zv[ip]     = 0;
+         axv[ip]    = 0;
+         ayv[ip]    = 0;
+         dedx_x[ip] = 0;
+         dedx_y[ip] = 0;
+     };
+ //     if(clx)clx->Clear();
+ //     if(cly)cly->Clear();
+ //    clx.Clear();
+ //    cly.Clear();
+ };
+ //--------------------------------------
+ //
+ //
+ //--------------------------------------
+ void TrkTrack::Delete(){
+ //    cout << "TrkTrack::Delete()"<<endl;
+     Clear();
+ //    if(clx)delete clx;
+ //    if(cly)delete cly;
+ };
+ //--------------------------------------
+ //
+ //
+ //--------------------------------------
  //--------------------------------------
  //
  //
  //--------------------------------------
  TrkSinglet::TrkSinglet(){
+ //    cout << "TrkSinglet::TrkSinglet() " << GetUniqueID()<<endl;
      plane    = 0;
      coord[0] = 0;
      coord[1] = 0;
      sgnl     = 0;
+ //    cls      = 0;
  };
  //--------------------------------------
  //
  //
  //--------------------------------------
  TrkSinglet::TrkSinglet(const TrkSinglet& s){
+ //    cout << "TrkSinglet::TrkSinglet(const TrkSinglet& s) " << GetUniqueID()<<endl;
      plane    = s.plane;
      coord[0] = s.coord[0];
      coord[1] = s.coord[1];
      sgnl     = s.sgnl;
+ //      cls      = 0;//<<<<pointer
+ //    cls      = TRef(s.cls);
  };
  //--------------------------------------
  //
-Line 232 
 void TrkSinglet::Dump(){
+Line 719 
 void TrkSinglet::Dump(){
  //
  //
  //--------------------------------------
+ void TrkSinglet::Clear(){
+ //    cout << "TrkSinglet::Clear() " << GetUniqueID()<<endl;
+ //    cls=0;
+     plane=-1;
+     coord[0]=-999;
+     coord[1]=-999;
+     sgnl=0;
+ }
+ //--------------------------------------
+ //
+ //
+ //--------------------------------------
  TrkLevel2::TrkLevel2(){
-     good2    = -1;
+   //    cout <<"TrkLevel2::TrkLevel2()"<<endl;
      for(Int_t i=0; i<12 ; i++){
-         crc[i] = -1;
+         good[i] = -1;
+         VKmask[i] = 0;
+         VKflag[i] = 0;
      };
-     Track    = new TClonesArray("TrkTrack");
+     Track    = 0;
-     SingletX = new TClonesArray("TrkSinglet");
+     SingletX = 0;
-     SingletY = new TClonesArray("TrkSinglet");
+     SingletY = 0;
- //    Track    = 0;
- //    Singlet = 0;
+ }
- //    SingletY = 0;
+ //--------------------------------------
+ //
+ //
+ //--------------------------------------
+ void TrkLevel2::Set(){
+     if(!Track)Track    = new TClonesArray("TrkTrack");
+     if(!SingletX)SingletX = new TClonesArray("TrkSinglet");
+     if(!SingletY)SingletY = new TClonesArray("TrkSinglet");
  }
  //--------------------------------------
  //
  //
  //--------------------------------------
  void TrkLevel2::Dump(){
-     TClonesArray &t  = *Track;
-     TClonesArray &sx = *SingletX;
+         //
-     TClonesArray &sy = *SingletY;
      cout << endl << endl << "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-";
-     cout << endl << "good2    : " << good2;
+     cout << endl << "good     : "; for(int i=0; i<12; i++) cout << good[i]<<" ";
-     cout << endl << "crc      : "; for(int i=0; i<12; i++) cout << crc[i];
      cout << endl << "ntrk()   : " << this->ntrk() ;
      cout << endl << "nclsx()  : " << this->nclsx();
      cout << endl << "nclsy()  : " << this->nclsy();
-     for(int i=0; i<this->ntrk(); i++)     ((TrkTrack *)t[i])->Dump();
+     if(Track){
-     for(int i=0; i<this->nclsx(); i++) ((TrkSinglet *)sx[i])->Dump();
+         TClonesArray &t  = *Track;
-     for(int i=0; i<this->nclsy(); i++) ((TrkSinglet *)sy[i])->Dump();
+         for(int i=0; i<ntrk(); i++)     ((TrkTrack *)t[i])->Dump();
+     }
+     if(SingletX){
+         TClonesArray &sx = *SingletX;
+         for(int i=0; i<nclsx(); i++) ((TrkSinglet *)sx[i])->Dump();
+     }
+     if(SingletY){
+         TClonesArray &sy = *SingletY;
+         for(int i=0; i<nclsy(); i++) ((TrkSinglet *)sy[i])->Dump();
+     }
+ }
+ //--------------------------------------
+ //
+ //
+ //--------------------------------------
+ /**
+  * The method returns false if the viking-chip was masked
+  * either apriori ,on the basis of the mask read from the DB,
+  * or run-by-run, on the basis of the calibration parameters)
+  * @param iv Tracker view (0-11)
+  * @param ivk Viking-chip number (0-23)
+  */
+ Bool_t TrkLevel2::GetVKMask(int iv, int ivk){
+     Int_t whichbit = (Int_t)pow(2,ivk);
+     return (whichbit&VKmask[iv])!=0;
+ }
+ /**
+  * The method returns false if the viking-chip was masked
+  * for this event due to common-noise computation failure.
+  * @param iv Tracker view (0-11)
+  * @param ivk Viking-chip number (0-23)
+  */
+ Bool_t TrkLevel2::GetVKFlag(int iv, int ivk){
+     Int_t whichbit = (Int_t)pow(2,ivk);
+     return (whichbit&VKflag[iv])!=0;
  }
+ /**
+  * The method returns true if the viking-chip was masked, either
+  * forced (see TrkLevel2::GetVKMask(int,int)) or
+  * for this event only (TrkLevel2::GetVKFlag(int,int)).
+  * @param iv Tracker view (0-11)
+  * @param ivk Viking-chip number (0-23)
+  */
+ Bool_t TrkLevel2::IsMaskedVK(int iv, int ivk){
+     return !(GetVKMask(iv,ivk)&&GetVKFlag(iv,ivk) );
+ };
  //--------------------------------------
  //
  //
  //--------------------------------------
  /**
   * Fills a TrkLevel2 object with values from a struct cTrkLevel2 (to get data from F77 common).
+  * Ref to Level1 data (clusters) is also set. If l1==NULL no references are set.
+  * (NB It make sense to set references only if events are stored in a tree that contains also the Level1 branch)
   */
- void TrkLevel2::FillCommonVar(cTrkLevel2 *l2){
+ void TrkLevel2::SetFromLevel2Struct(cTrkLevel2 *l2, TrkLevel1 *l1){
-     //
- //    Track    = new TClonesArray("TrkTrack");
+ //    cout << "void TrkLevel2::SetFromLevel2Struct(cTrkLevel2 *l2, TrkLevel1 *l1)"<<endl;
- //    SingletX = new TClonesArray("TrkSinglet");
+     Clear();
- //    SingletY = new TClonesArray("TrkSinglet");
  //  temporary objects:
      TrkSinglet* t_singlet = new TrkSinglet();
      TrkTrack*   t_track   = new TrkTrack();
+ //  -----------------
  //  general variables
-     good2 = l2->good2;
+ //  -----------------
      for(Int_t i=0; i<12 ; i++){
-         crc[i] = l2->crc[i];
+         good[i] = l2->good[i];
+         VKmask[i]=0;
+         VKflag[i]=0;
+         for(Int_t ii=0; ii<24 ; ii++){
+             Int_t setbit = (Int_t)pow(2,ii);
+             if( l2->vkflag[ii][i]!=-1 )VKmask[i]=VKmask[i]|setbit;
+             if( l2->vkflag[ii][i]!=0  )VKflag[i]=VKflag[i]|setbit;
+         };
      };
+ //  --------------
  //  *** TRACKS ***
+ //  --------------
+     if(!Track) Track = new TClonesArray("TrkTrack");
      TClonesArray &t = *Track;
      for(int i=0; i<l2->ntrk; i++){
-         t_track->seqno = i;
+         t_track->seqno = i;// NBNBNBNB deve sempre essere = i
          t_track->image = l2->image[i]-1;
- //      cout << "track "<<i<<t_track->seqno << t_track->image<<endl;
          t_track->chi2  = l2->chi2_nt[i];
+         t_track->nstep = l2->nstep_nt[i];
          for(int it1=0;it1<5;it1++){
              t_track->al[it1] = l2->al_nt[i][it1];
              for(int it2=0;it2<5;it2++)
                  t_track->coval[it1][it2] = l2->coval[i][it2][it1];
          };
          for(int ip=0;ip<6;ip++){
-             t_track->xgood[ip]  = l2->xgood_nt[i][ip];
+             // ---------------------------------
-             t_track->ygood[ip]  = l2->ygood_nt[i][ip];
+             // new implementation of xgood/ygood
+             // ---------------------------------
+             t_track->xgood[ip]  = l2->cltrx[i][ip]; //cluster ID
+             t_track->ygood[ip]  = l2->cltry[i][ip]; //cluster ID
+             t_track->xgood[ip] += 10000000*l2->ls[i][ip]; // ladder+sensor
+             t_track->ygood[ip] += 10000000*l2->ls[i][ip]; // ladder+sensor
+             if(l2->xbad[i][ip]>0)t_track->xgood[ip]=-t_track->xgood[ip];
+             if(l2->ybad[i][ip]>0)t_track->ygood[ip]=-t_track->ygood[ip];
+ //          if(l2->xbad[i][ip]>0 || l2->ybad[i][ip]>0){
+ //          if(l2->dedx_x[i][ip]<0 || l2->dedx_y[i][ip]<0){
+ //              cout << ip << " - "<< l2->cltrx[i][ip] << " "<<l2->cltry[i][ip]<<" "<<l2->ls[i][ip]<<endl;
+ //              cout << ip << " - "<<t_track->xgood[ip]<<" "<<t_track->ygood[ip]<<endl;
+ //              cout << ip << " - "<<t_track->GetClusterX_ID(ip)<<" "<<t_track->GetClusterY_ID(ip)<<" "<<t_track->GetLadder(ip)<<" "<<t_track->GetSensor(ip)<<endl;
+ //              cout << ip << " - "<<t_track->BadClusterX(ip)<<" "<<t_track->BadClusterY(ip)<<endl;
+ //              cout << ip << " - "<<t_track->SaturatedClusterX(ip)<<" "<<t_track->SaturatedClusterY(ip)<<endl;
+ //          }
              t_track->xm[ip]     = l2->xm_nt[i][ip];
              t_track->ym[ip]     = l2->ym_nt[i][ip];
              t_track->zm[ip]     = l2->zm_nt[i][ip];
              t_track->resx[ip]   = l2->resx_nt[i][ip];
              t_track->resy[ip]   = l2->resy_nt[i][ip];
+             t_track->tailx[ip]  = l2->tailx[i][ip];
+             t_track->taily[ip]  = l2->taily[i][ip];
              t_track->xv[ip]     = l2->xv_nt[i][ip];
              t_track->yv[ip]     = l2->yv_nt[i][ip];
              t_track->zv[ip]     = l2->zv_nt[i][ip];
-Line 310 
 void TrkLevel2::FillCommonVar(cTrkLevel2
+Line 893 
 void TrkLevel2::FillCommonVar(cTrkLevel2
              t_track->ayv[ip]    = l2->ayv_nt[i][ip];
              t_track->dedx_x[ip] = l2->dedx_x[i][ip];
              t_track->dedx_y[ip] = l2->dedx_y[i][ip];
+             //-----------------------------------------------------
+             //-----------------------------------------------------
+             //-----------------------------------------------------
+             //-----------------------------------------------------
          };
+ //      if(t_track->IsSaturated())t_track->Dump();
          new(t[i]) TrkTrack(*t_track);
          t_track->Clear();
      };
+ //  ----------------
  //  *** SINGLETS ***
+ //  ----------------
+     if(!SingletX)SingletX = new TClonesArray("TrkSinglet");
      TClonesArray &sx = *SingletX;
      for(int i=0; i<l2->nclsx; i++){
          t_singlet->plane    = l2->planex[i];
          t_singlet->coord[0] = l2->xs[i][0];
          t_singlet->coord[1] = l2->xs[i][1];
          t_singlet->sgnl     = l2->signlxs[i];
+         //-----------------------------------------------------
+ //      if(l1) t_singlet->cls      = l1->GetCluster(l2->clsx[i]-1);
+         //-----------------------------------------------------
          new(sx[i]) TrkSinglet(*t_singlet);
          t_singlet->Clear();
      }
+     if(!SingletY)SingletY = new TClonesArray("TrkSinglet");
      TClonesArray &sy = *SingletY;
      for(int i=0; i<l2->nclsy; i++){
          t_singlet->plane    = l2->planey[i];
          t_singlet->coord[0] = l2->ys[i][0];
          t_singlet->coord[1] = l2->ys[i][1];
          t_singlet->sgnl     = l2->signlys[i];
+         //-----------------------------------------------------
+ //      if(l1) t_singlet->cls      = l1->GetCluster(l2->clsy[i]-1);
+         //-----------------------------------------------------
          new(sy[i]) TrkSinglet(*t_singlet);
          t_singlet->Clear();
-         };
+     };
-         delete t_track;
+     delete t_track;
-         delete t_singlet;
+     delete t_singlet;
+ }
+ /**
+  * Fills a struct cTrkLevel2 with values from a TrkLevel2 object (to put data into a F77 common).
+  */
+ void TrkLevel2::GetLevel2Struct(cTrkLevel2 *l2) const {
+ //  general variables
+ //    l2->good2 = good2 ;
+     for(Int_t i=0; i<12 ; i++){
+ //      l2->crc[i] = crc[i];
+                 l2->good[i] = good[i];
+     };
+ //  *** TRACKS ***
+     if(Track){
+         l2->ntrk              =  Track->GetEntries();
+         for(Int_t i=0;i<l2->ntrk;i++){
+             l2->image[i] = 1 + ((TrkTrack *)Track->At(i))->image;
+             l2->chi2_nt[i] =  ((TrkTrack *)Track->At(i))->chi2;
+             l2->nstep_nt[i] =  ((TrkTrack *)Track->At(i))->nstep;
+             for(int it1=0;it1<5;it1++){
+                 l2->al_nt[i][it1] = ((TrkTrack *)Track->At(i))->al[it1];
+                 for(int it2=0;it2<5;it2++)
+                     l2->coval[i][it2][it1] = ((TrkTrack *)Track->At(i))->coval[it1][it2];
+             };
+             for(int ip=0;ip<6;ip++){
+                 l2->xgood_nt[i][ip] = ((TrkTrack *)Track->At(i))->XGood(ip);
+                 l2->ygood_nt[i][ip] = ((TrkTrack *)Track->At(i))->YGood(ip);
+                 l2->xm_nt[i][ip]    = ((TrkTrack *)Track->At(i))->xm[ip];
+                 l2->ym_nt[i][ip]    = ((TrkTrack *)Track->At(i))->ym[ip];
+                 l2->zm_nt[i][ip]    = ((TrkTrack *)Track->At(i))->zm[ip];
+                 l2->resx_nt[i][ip]  = ((TrkTrack *)Track->At(i))->resx[ip];
+                 l2->resy_nt[i][ip]  = ((TrkTrack *)Track->At(i))->resy[ip];
+                 l2->tailx[i][ip]  = ((TrkTrack *)Track->At(i))->tailx[ip];
+                 l2->taily[i][ip]  = ((TrkTrack *)Track->At(i))->taily[ip];
+                 l2->xv_nt[i][ip]    = ((TrkTrack *)Track->At(i))->xv[ip];
+                 l2->yv_nt[i][ip]    = ((TrkTrack *)Track->At(i))->yv[ip];
+                 l2->zv_nt[i][ip]    = ((TrkTrack *)Track->At(i))->zv[ip];
+                 l2->axv_nt[i][ip]   = ((TrkTrack *)Track->At(i))->axv[ip];
+                 l2->ayv_nt[i][ip]   = ((TrkTrack *)Track->At(i))->ayv[ip];
+                 l2->dedx_x[i][ip]   = ((TrkTrack *)Track->At(i))->dedx_x[ip];
+                 l2->dedx_y[i][ip]   = ((TrkTrack *)Track->At(i))->dedx_y[ip];
+             };
+         }
+     }
+ //  *** SINGLETS ***
+     if(SingletX){
+         l2->nclsx              = SingletX->GetEntries();
+         for(Int_t i=0;i<l2->nclsx;i++){
+             l2->planex[i]  = ((TrkSinglet *)SingletX->At(i))->plane;
+             l2->xs[i][0]   = ((TrkSinglet *)SingletX->At(i))->coord[0];
+             l2->xs[i][1]   = ((TrkSinglet *)SingletX->At(i))->coord[1];
+             l2->signlxs[i] = ((TrkSinglet *)SingletX->At(i))->sgnl;
+         }
+     }
+     if(SingletY){
+         l2->nclsy              = SingletY->GetEntries();
+         for(Int_t i=0;i<l2->nclsy;i++){
+             l2->planey[i]  = ((TrkSinglet *)SingletY->At(i))->plane;
+             l2->ys[i][0]   = ((TrkSinglet *)SingletY->At(i))->coord[0];
+             l2->ys[i][1]   = ((TrkSinglet *)SingletY->At(i))->coord[1];
+             l2->signlys[i] = ((TrkSinglet *)SingletY->At(i))->sgnl;
+         }
+     }
  }
  //--------------------------------------
  //
  //
  //--------------------------------------
  void TrkLevel2::Clear(){
-     good2    = -1;
      for(Int_t i=0; i<12 ; i++){
-         crc[i] = -1;
+         good[i] = -1;
+         VKflag[i] = 0;
+         VKmask[i] = 0;
      };
- /*    Track->RemoveAll();
+ //    if(Track)Track->Clear("C");
-     SingletX->RemoveAll();
+ //    if(SingletX)SingletX->Clear("C");
-     SingletY->RemoveAll();*/
+ //    if(SingletY)SingletY->Clear("C");
-         // modify to avoid memory leakage
+     if(Track)Track->Delete();
-         Track->Clear();
+     if(SingletX)SingletX->Delete();
-         SingletX->Clear();
+     if(SingletY)SingletY->Delete();
-         SingletY->Clear();
+ }
+ // //--------------------------------------
+ // //
+ // //
+ // //--------------------------------------
+ void TrkLevel2::Delete(){
+ //    cout << "void TrkLevel2::Delete()"<<endl;
+     Clear();
+     if(Track)delete Track;
+     if(SingletX)delete SingletX;
+     if(SingletY)delete SingletY;
  }
  //--------------------------------------
  //
-Line 362 
 void TrkLevel2::Clear(){
+Line 1040 
 void TrkLevel2::Clear(){
   * Sort physical tracks and stores them in a TObjectArray, ordering by increasing chi**2 value (in case of track image, it selects the one with lower chi**2). The total number of physical tracks is given by GetNTracks() and the it-th physical track can be retrieved by means of the method GetTrack(int it).
   * This method is overridden by PamLevel2::GetTracks(), where calorimeter and TOF information is used.
   */
- TClonesArray *TrkLevel2::GetTracks(){
+ TRefArray *TrkLevel2::GetTracks_NFitSorted(){
-     TClonesArray *sorted = GetTracks_NFitSorted();
-     return sorted;
- };
- TClonesArray *TrkLevel2::GetTracks_Chi2Sorted(){
-     TClonesArray *sorted = new TClonesArray("TrkTrack");
-     TClonesArray &t = *Track;
-     TClonesArray &ts = *sorted;
-     int N=this->ntrk();
-     vector<int> m(N); for(int i=0; i<N; i++)m[i]=1;
-     int indo=0;
+     if(!Track)return 0;
-     int indi=0;
-     while(N != 0){
-         float chi2ref=1000000;
-         for(int i=0; i<this->ntrk(); i++){
-             if(((TrkTrack *)t[i])->chi2 < chi2ref && m[i]==1){
-                 chi2ref = ((TrkTrack *)t[i])->chi2;
-                 indi = i;
-             }
-         }
-         if( ((TrkTrack *)t[indi])->image != -1 ){
-             m[((TrkTrack *)t[indi])->image] = 0;
-             N--;
-         }
-         new(ts[indo]) TrkTrack(*(TrkTrack*)t[indi]);
-         m[indi] = 0;
-         N--;
-         indo++;
-     }
-     return sorted;
- }
- TClonesArray *TrkLevel2::GetTracks_NFitSorted(){
-     TClonesArray *sorted = new TClonesArray("TrkTrack");
+     TRefArray *sorted = new TRefArray();
-     TClonesArray &t = *Track;
-     TClonesArray &ts = *sorted;
+     TClonesArray &t  = *Track;
-     int N=this->ntrk();
+ //    TClonesArray &ts = *PhysicalTrack;
+     int N = ntrk();
      vector<int> m(N); for(int i=0; i<N; i++)m[i]=1;
+ //      int m[50]; for(int i=0; i<N; i++)m[i]=1;
      int indo=0;
      int indi=0;
-     while(N != 0){
+     while(N > 0){
+ //    while(N != 0){
          int nfit =0;
-         float chi2ref=1000000;
+         float chi2ref = numeric_limits<float>::max();
          // first loop to search maximum num. of fit points
-         for(int i=0; i<this->ntrk(); i++){
+         for(int i=0; i < ntrk(); i++){
              if( ((TrkTrack *)t[i])->GetNtot() >= nfit && m[i]==1){
                  nfit =    ((TrkTrack *)t[i])->GetNtot();
- //              cout << "1** "<<i<< " " << nfit<<endl;
              }
          }
          //second loop to search minimum chi2 among selected
-         for(int i=0; i<this->ntrk(); i++){
+         for(int i=0; i<ntrk(); i++){
-             if(    ((TrkTrack *)t[i])->chi2 < chi2ref
+             Float_t chi2 = ((TrkTrack *)t[i])->chi2;
-                 && ((TrkTrack *)t[i])->GetNtot()== nfit
+             if(chi2 < 0) chi2 = -chi2*1000;
-                 && m[i]==1){
+             if(    chi2 < chi2ref
+                    && ((TrkTrack *)t[i])->GetNtot() == nfit
+                    && m[i]==1){
                  chi2ref = ((TrkTrack *)t[i])->chi2;
                  indi = i;
- //              cout << "2** "<<i<< " " << nfit <<" "<<chi2ref<<endl;
+             };
-             }
+         };
-         }
          if( ((TrkTrack *)t[indi])->HasImage() ){
              m[((TrkTrack *)t[indi])->image] = 0;
              N--;
- //          Int_t nfiti=((TrkTrack *)t[((TrkTrack *)t[indi])->image  ])->GetNtot();
- //          Float_t chi2i=((TrkTrack *)t[((TrkTrack *)t[indi])->image  ])->chi2;
  //          cout << "i** "<< ((TrkTrack *)t[indi])->image << " " << nfiti <<" "<<chi2i<<endl;
-         }
+         };
-         new(ts[indo]) TrkTrack(*(TrkTrack*)t[indi]);
+         sorted->Add( (TrkTrack*)t[indi] );
          m[indi] = 0;
+ //      cout << "SORTED "<< indo << " "<< indi << " "<< N << " "<<((TrkTrack *)t[indi])->image<<" "<<chi2ref<<endl;
          N--;
          indo++;
      }
+     m.clear();
+ //    cout << "GetTracks_NFitSorted(it): Done"<< endl;
      return sorted;
+ //    return PhysicalTrack;
  }
  //--------------------------------------
  //
-Line 458 
 TrkTrack *TrkLevel2::GetStoredTrack(int
+Line 1111 
 TrkTrack *TrkLevel2::GetStoredTrack(int
          cout << "                Stored tracks ntrk() = "<< this->ntrk() << endl;
          return 0;
      }
+     if(!Track){
+         cout << "TrkTrack *TrkLevel2::GetStoredTrack(int is) >> (TClonesArray*) Track ==0 "<<endl;
+     };
      TClonesArray &t = *(Track);
      TrkTrack *track = (TrkTrack*)t[is];
      return track;
-Line 467 
 TrkTrack *TrkLevel2::GetStoredTrack(int
+Line 1123 
 TrkTrack *TrkLevel2::GetStoredTrack(int
  //
  //--------------------------------------
  /**
+  * Retrieves the is-th stored X singlet.
+  * @param it Singlet number, ranging from 0 to nclsx().
+  */
+ TrkSinglet *TrkLevel2::GetSingletX(int is){
+         if(is >= this->nclsx()){
+                 cout << "** TrkLevel2 ** Singlet "<< is << "doen not exits! " << endl;
+                 cout << "                Stored x-singlets nclsx() = "<< this->nclsx() << endl;
+                 return 0;
+         }
+         if(!SingletX)return 0;
+         TClonesArray &t = *(SingletX);
+         TrkSinglet *singlet = (TrkSinglet*)t[is];
+         return singlet;
+ }
+ //--------------------------------------
+ //
+ //
+ //--------------------------------------
+ /**
+  * Retrieves the is-th stored Y singlet.
+  * @param it Singlet number, ranging from 0 to nclsx().
+  */
+ TrkSinglet *TrkLevel2::GetSingletY(int is){
+         if(is >= this->nclsy()){
+                 cout << "** TrkLevel2 ** Singlet "<< is << "doen not exits! " << endl;
+                 cout << "                Stored y-singlets nclsy() = "<< this->nclsx() << endl;
+                 return 0;
+         }
+         if(!SingletY)return 0;
+         TClonesArray &t = *(SingletY);
+         TrkSinglet *singlet = (TrkSinglet*)t[is];
+         return singlet;
+ }
+ //--------------------------------------
+ //
+ //
+ //--------------------------------------
+ /**
   * Retrieves the it-th "physical" track, sorted by the method GetNTracks().
   * @param it Track number, ranging from 0 to GetNTracks().
   */
  TrkTrack *TrkLevel2::GetTrack(int it){
-     if(it >= this->GetNTracks()){
+         if(it >= this->GetNTracks()){
-         cout << "** TrkLevel2 ** Track "<< it << "does not exits! " << endl;
+                 cout << "** TrkLevel2 ** Track "<< it << "does not exits! " << endl;
-         cout << "                Physical tracks GetNTracks() = "<< this->ntrk() << endl;
+                 cout << "                Physical tracks GetNTracks() = "<< this->ntrk() << endl;
-         return 0;
+                 return 0;
-     }
+         }
-     TrkTrack *track = (TrkTrack*)(*(this->GetTracks()))[it];
-         GetTracks()->Delete();////TEMPORANEO
+         TRefArray *sorted = GetTracks();  //TEMPORANEO
-     return track;
+         if(!sorted)return 0;
+         TrkTrack *track = (TrkTrack*)sorted->At(it);
+         sorted->Clear();
+         delete sorted;
+         return track;
  }
+ /**
+  * Give the number of "physical" tracks, sorted by the method GetTracks().
+  */
  Int_t TrkLevel2::GetNTracks(){
-         Int_t ntot=0;
-         ntot = GetTracks()->GetEntries();
+         Float_t ntot=0;
-         GetTracks()->Delete();////TEMPORANEO
+         if(!Track)return 0;
-         return ntot;
+         TClonesArray &t = *Track;
+         for(int i=0; i<ntrk(); i++) {
+                 if( ((TrkTrack *)t[i])->GetImageSeqNo() == -1 ) ntot+=1.;
+                 else ntot+=0.5;
+         }
+         return (Int_t)ntot;
  };
  //--------------------------------------
  //
-Line 502 
 TrkTrack *TrkLevel2::GetTrackImage(int i
+Line 1212 
 TrkTrack *TrkLevel2::GetTrackImage(int i
          cout << "                Physical tracks GetNTracks() = "<< this->ntrk() << endl;
          return 0;
      }
-     TrkTrack *track = (TrkTrack*)(*(this->GetTracks()))[it];
+     TRefArray* sorted = GetTracks(); //TEMPORANEO
+     if(!sorted)return 0;
+     TrkTrack *track = (TrkTrack*)sorted->At(it);
      if(!track->HasImage()){
          cout << "** TrkLevel2 ** Track "<< it << "does not have image! " << endl;
          return 0;
      }
+     if(!Track)return 0;
      TrkTrack *image = (TrkTrack*)(*Track)[track->image];
+     sorted->Delete();
+     delete sorted;
      return image;
  }
-Line 519 
 TrkTrack *TrkLevel2::GetTrackImage(int i
+Line 1238 
 TrkTrack *TrkLevel2::GetTrackImage(int i
   * Loads the magnetic field.
   * @param s Path of the magnetic-field files.
   */
- void TrkLevel2::LoadField(TString s){
+ void TrkLevel2::LoadField(TString path){
-     readb_(s.Data());
+ //
+ //     strcpy(path_.path,path.Data());
+ //     path_.pathlen = path.Length();
+ //     path_.error   = 0;
+ //     readb_();
+     TrkParams::Set(path,1);
+     TrkParams::Load(1);
+ //
+ };
+ /**
+  * Get BY (kGauss)
+  * @param v (x,y,z) coordinates in cm
+  */
+ float TrkLevel2::GetBX(float* v){
+     float b[3];
+     gufld_(v,b);
+     return b[0]/10.;
+ }
+ /**
+  * Get BY (kGauss)
+  * @param v (x,y,z) coordinates in cm
+  */
+ float TrkLevel2::GetBY(float* v){
+     float b[3];
+     gufld_(v,b);
+     return b[1]/10.;
+ }
+ /**
+  * Get BY (kGauss)
+  * @param v (x,y,z) coordinates in cm
+  */
+ float TrkLevel2::GetBZ(float* v){
+     float b[3];
+     gufld_(v,b);
+     return b[2]/10.;
+ }
+ //--------------------------------------
+ //
+ //
+ //--------------------------------------
+ /**
+  * Get tracker-plane (mechanical) z-coordinate
+  * @param plane_id plane index (1=TOP,2,3,4,5,6=BOTTOM)
+  */
+ Float_t TrkLevel2::GetZTrk(Int_t plane_id){
+         switch(plane_id){
+                 case 1: return ZTRK1;
+                 case 2: return ZTRK2;
+                 case 3: return ZTRK3;
+                 case 4: return ZTRK4;
+                 case 5: return ZTRK5;
+                 case 6: return ZTRK6;
+                 default: return 0.;
+         };
  };
  //--------------------------------------
  //
-Line 538 
 Trajectory::Trajectory(){
+Line 1312 
 Trajectory::Trajectory(){
      thx = new float[npoint];
      thy = new float[npoint];
      tl = new float[npoint];
-     float dz = ((ZTRKUP)-(ZTRKDW))/(npoint-1);
+     float dz = ((ZTRK1)-(ZTRK6))/(npoint-1);
      for(int i=0; i<npoint; i++){
          x[i] = 0;
          y[i] = 0;
-         z[i] = (ZTRKUP) - i*dz;
+         z[i] = (ZTRK1) - i*dz;
          thx[i] = 0;
          thy[i] = 0;
          tl[i] = 0;
-Line 569 
 Trajectory::Trajectory(int n){
+Line 1343 
 Trajectory::Trajectory(int n){
      thx = new float[npoint];
      thy = new float[npoint];
      tl = new float[npoint];
-     float dz = ((ZTRKUP)-(ZTRKDW))/(npoint-1);
+     float dz = ((ZTRK1)-(ZTRK6))/(npoint-1);
      for(int i=0; i<npoint; i++){
          x[i] = 0;
          y[i] = 0;
-         z[i] = (ZTRKUP) - i*dz;
+         z[i] = (ZTRK1) - i*dz;
          thx[i] = 0;
          thy[i] = 0;
          tl[i] = 0;
-Line 610 
 Trajectory::Trajectory(int n, float* zin
+Line 1384 
 Trajectory::Trajectory(int n, float* zin
      npoint=i;
      if(npoint != n)cout << "NB! Trajectory created with "<<npoint<<" points"<<endl;
  }
+ void Trajectory::Delete(){
+     if(x) delete [] x;
+     if(y) delete [] y;
+     if(z) delete [] z;
+     if(thx) delete [] thx;
+     if(thy) delete [] thy;
+     if(tl) delete [] tl;
+ }
  //--------------------------------------
  //
  //
-Line 647 
 float Trajectory::GetLength(int ifirst,
+Line 1431 
 float Trajectory::GetLength(int ifirst,
      return l;
  }
+ /**
+  * Evaluates the trajectory in the apparatus associated to the track.
+  * It integrates the equations of motion in the magnetic field. The magnetic field should be previously loaded ( by calling  TrkLevel2::LoadField() ), otherwise an error message is returned.
+  * @param t pointer to an object of the class Trajectory,
+  * which z coordinates should be previously initialized by calling the proper constructor ( Trajectory::Trajectory(int n, float* zin) ).
+  * @return error flag.
+  */
+ int Trajectory::DoTrack2(float* al){
+     double *dxout   = new double[npoint];
+     double *dyout   = new double[npoint];
+     double *dthxout = new double[npoint];
+     double *dthyout = new double[npoint];
+     double *dtlout  = new double[npoint];
+     double *dzin    = new double[npoint];
+     double dal[5];
+     int ifail = 0;
+     for (int i=0; i<5; i++)      dal[i]  = (double)al[i];
+     for (int i=0; i<npoint; i++) dzin[i] = (double)z[i];
+     TrkParams::Load(1);
+     if( !TrkParams::IsLoaded(1) ){
+         cout << "int Trajectory::DoTrack2(float* al) --- ERROR --- m.field not loaded"<<endl;
+         return 0;
+     }
+     dotrack2_(&(npoint),dzin,dxout,dyout,dthxout,dthyout,dtlout,dal,&ifail);
+     for (int i=0; i<npoint; i++){
+         x[i]   = (float)*dxout++;
+         y[i]   = (float)*dyout++;
+         thx[i] = (float)*dthxout++;
+         thy[i] = (float)*dthyout++;
+         tl[i]  = (float)*dtlout++;
+     }
+     return ifail;
+ };
  ClassImp(TrkLevel2);
  ClassImp(TrkSinglet);
  ClassImp(TrkTrack);

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