Getting the trigger descriptors from CDB
[u/mrichter/AliRoot.git] / HMPID / AliHMPIDTracker.cxx
index bb48076..56a0fcb 100644 (file)
@@ -1,23 +1,29 @@
 #include "AliHMPIDTracker.h"     //class header
 #include "AliHMPIDCluster.h"     //GetTrackPoint(),PropagateBack() 
 #include "AliHMPIDParam.h"       //GetTrackPoint(),PropagateBack()
-#include "AliHMPIDRecon.h"       //PropagateBack()
-#include <AliESD.h>              //PropagateBack()  
+#include "AliHMPIDRecon.h"       //Recon()
+#include <AliESDEvent.h>              //PropagateBack(),Recon()  
+#include <AliESDtrack.h>              //Intersect()  
 #include <AliRun.h>              //GetTrackPoint(),PropagateBack()  
 #include <AliTrackPointArray.h>  //GetTrackPoint()
 #include <AliAlignObj.h>         //GetTrackPoint()
-#include <AliCDBManager.h>
-#include <AliCDBEntry.h>
-
+#include <AliCDBManager.h>       //PropageteBack()
+#include <AliCDBEntry.h>         //PropageteBack()
+//.
+// HMPID base class fo tracking
+//.
+//.
+//.
 ClassImp(AliHMPIDTracker)
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 AliHMPIDTracker::AliHMPIDTracker():AliTracker()
 {
-// ctor
-  fClu=new TObjArray(AliHMPIDDigit::kMaxCh+1);
-  fClu->SetOwner(kTRUE);
-  for(int i=AliHMPIDDigit::kMinCh;i<=AliHMPIDDigit::kMaxCh;i++) fClu->AddAt(new TClonesArray("AliHMPIDCluster"),i);
-}
+// ctor. Create TObjArray of TClonesArray of AliHMPIDCluster  
+// 
+//  
+  fClu=new TObjArray(AliHMPIDParam::kMaxCh+1);  fClu->SetOwner(kTRUE);
+  for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) fClu->AddAt(new TClonesArray("AliHMPIDCluster"),i);
+}//ctor
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++    
 Bool_t AliHMPIDTracker::GetTrackPoint(Int_t idx, AliTrackPoint& point) const
 {
@@ -27,88 +33,89 @@ Bool_t AliHMPIDTracker::GetTrackPoint(Int_t idx, AliTrackPoint& point) const
 //            point- reference to the object where to store the point     
 //   Returns: status of operation  if FALSE then AliReconstruction::WriteAlignmentData() do not store this point to array of points for current track. 
   if(idx<0) return kFALSE; //no MIP cluster assigned to this track in PropagateBack()
-  Int_t iCham=idx/1000000;
-  Int_t iClu=idx%1000000;
-  point.SetVolumeID(AliAlignObj::LayerToVolUID(AliAlignObj::kHMPID,iCham-1));//layer and chamber number
+  Int_t iCham=idx/1000000; Int_t iClu=idx%1000000;
+  point.SetVolumeID(AliGeomManager::LayerToVolUID(AliGeomManager::kHMPID,iCham-1));//layer and chamber number
   TClonesArray *pArr=(TClonesArray*)(*fClu)[iCham];
   AliHMPIDCluster *pClu=(AliHMPIDCluster*)pArr->UncheckedAt(iClu);//get pointer to cluster
   Double_t mars[3];
   AliHMPIDParam::Instance()->Lors2Mars(iCham,pClu->X(),pClu->Y(),mars);
   point.SetXYZ(mars[0],mars[1],mars[2]);
   return kTRUE;
-}
+}//GetTrackPoint()
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+Int_t AliHMPIDTracker::IntTrkCha(AliESDtrack *pTrk,Float_t &xPc,Float_t &yPc)
+{
+// Static method to find intersection in between given track and HMPID chambers
+// Arguments: pTrk- ESD track; xPc,yPc- track intersection with PC in LORS [cm]
+//   Returns: intersected chamber ID or -1
+  AliHMPIDParam *pParam=AliHMPIDParam::Instance();
+  Float_t xRa=0,yRa=0,theta=0,phi=0;                                                            //track intersection at PC and angles at RAD, LORS  
+  for(Int_t i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++){                              //chambers loop
+    Double_t p1[3],n1[3]; pParam->Norm(i,n1); pParam->Point(i,p1,AliHMPIDParam::kRad);          //point & norm  for middle of radiator plane
+    Double_t p2[3],n2[3]; pParam->Norm(i,n2); pParam->Point(i,p2,AliHMPIDParam::kPc);           //point & norm  for entrance to PC plane
+    if(pTrk->Intersect(p1,n1,-GetBz())==kFALSE) continue;                                       //try to intersect track with the middle of radiator
+    if(pTrk->Intersect(p2,n2,-GetBz())==kFALSE) continue;                                       //try to intersect track with PC
+    pParam->Mars2LorsVec(i,n1,theta,phi);                                                       //track angles at RAD
+    pParam->Mars2Lors   (i,p1,xRa,yRa);                                                         //TRKxRAD position
+    pParam->Mars2Lors   (i,p2,xPc,yPc);                                                         //TRKxPC position
+    if(AliHMPIDParam::IsInside(xPc,yPc,pParam->DistCut())==kFALSE) continue;                    //not in active area  
+    pTrk->SetHMPIDtrk      (xRa,yRa,theta,phi);                                                 //store track intersection info
+    pTrk->SetHMPIDcluIdx   (i,0);
+    return i;
+  }                                                                                             //chambers loop
+  return -1; //no intersection with HMPID chambers
+}//IntTrkCha()
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 Int_t AliHMPIDTracker::LoadClusters(TTree *pCluTree)
 {
-// Interface callback methode invoked from AliReconstruction::RunTracking() to load HMPID clusters before PropagateBack() gets control 
+// Interface callback methode invoked from AliReconstruction::RunTracking() to load HMPID clusters before PropagateBack() gets control. Done once per event.
 // Arguments: pCluTree- pointer to clusters tree got by AliHMPIDLoader::LoadRecPoints("read") then AliHMPIDLoader::TreeR()
 //   Returns: error code (currently ignored in AliReconstruction::RunTraking())    
-  AliDebug(1,"Start.");
-  for(int i=AliHMPIDDigit::kMinCh;i<=AliHMPIDDigit::kMaxCh;i++) pCluTree->SetBranchAddress(Form("HMPID%d",i),&((*fClu)[i]));
+  for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) pCluTree->SetBranchAddress(Form("HMPID%d",i),&((*fClu)[i]));
   pCluTree->GetEntry(0);
-  AliDebug(1,"Stop."); 
   return 0;  
-}
+}//LoadClusters()
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Int_t AliHMPIDTracker::PropagateBack(AliESD *pEsd)
+Int_t AliHMPIDTracker::PropagateBack(AliESDEvent *pEsd)
 {
-// This method defined as pure virtual in AliTracker. It is invoked from AliReconstruction::RunTracking() after invocation of AliTracker::LoadClusters()
+// Interface pure virtual in AliTracker. Invoked from AliReconstruction::RunTracking() after invocation of AliTracker::LoadClusters() once per event
 // Agruments: pEsd - pointer to ESD
 //   Returns: error code    
-  AliCDBEntry *pNmeanEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Nmean",pEsd->GetRunNumber()); //contains TObjArray of 21 TF1
-  AliCDBEntry *pQthreEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Qthre",pEsd->GetRunNumber()); //contains TObjArray of 7 TF1
+  AliCDBEntry *pNmeanEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Nmean"); //contains TObjArray of 21 TF1
+  AliCDBEntry *pQthreEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Qthre"); //contains TObjArray of 7 TF1
   if(!pNmeanEnt) AliFatal("No Nmean C6F14 ");
   if(!pQthreEnt) AliFatal("No Qthre");
     
-  AliHMPID *pHmpid=((AliHMPID*)gAlice->GetDetector("HMPID"));  
-  return Recon(pEsd,pHmpid->CluLst(),(TObjArray*)pNmeanEnt->GetObject());  
-}
+  return Recon(pEsd,fClu,(TObjArray*)pNmeanEnt->GetObject());  
+}//PropagateBack()
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Int_t AliHMPIDTracker::Recon(AliESD *pEsd,TObjArray *pCluAll,TObjArray *pNmean)
+Int_t AliHMPIDTracker::Recon(AliESDEvent *pEsd,TObjArray *pClus,TObjArray *pNmean)
 {
-// Interface callback method invoked by AliRecontruction::RunTracking() during tracking after TOF. It's done just once per event
-// Arguments: pEsd - pointer to Event Summary Data class instance which contains a list of tracks
+// Static method to reconstruct Theta Ckov for all valid tracks of a given event.
+// Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time)
 //   Returns: error code, 0 if no errors   
-  Int_t iNtracks=pEsd->GetNumberOfTracks();  AliDebugClass(1,Form("Start with %i tracks",iNtracks));
-  
   AliHMPIDRecon recon;                                                                       //instance of reconstruction class, nothing important in ctor
-  Double_t xPc,yPc;
-  for(Int_t iTrk=0;iTrk<iNtracks;iTrk++){                                                        //ESD tracks loop
-    AliESDtrack *pTrk = pEsd->GetTrack(iTrk);                                                    //get next reconstructed track    
+  Float_t xPc,yPc;
+  for(Int_t iTrk=0;iTrk<pEsd->GetNumberOfTracks();iTrk++){                                       //ESD tracks loop
+    AliESDtrack *pTrk = pEsd->GetTrack(iTrk);                                                    //get reconstructed track    
     Int_t cham=IntTrkCha(pTrk,xPc,yPc);                                                          //get chamber intersected by this track 
     if(cham<0) continue;                                                                         //no intersection at all, go after next track
     Double_t nmean=((TF1*)pNmean->At(3*cham))->Eval(pEsd->GetTimeStamp());                       //C6F14 Nmean for this chamber
     recon.SetImpPC(xPc,yPc);                                                                     //store track impact to PC
-    recon.CkovAngle(pTrk,(TClonesArray *)pCluAll->At(cham),nmean);                               //search for Cerenkov angle of this track
+    recon.CkovAngle(pTrk,(TClonesArray *)pClus->At(cham),nmean);                                 //search for Cerenkov angle of this track
   }                                                                                              //ESD tracks loop
-  AliDebugClass(1,"Stop pattern recognition");
   return 0; // error code: 0=no error;
-}//PropagateBack()
+}//Recon()
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Int_t AliHMPIDTracker::IntTrkCha(AliESDtrack *pTrk,Double_t &xToPc,Double_t &yToPc)
+Int_t AliHMPIDTracker::ReconHiddenTrk(Int_t iCh,AliESDtrack *pTrk,TClonesArray *pCluLst,TObjArray *pNmean)
 {
-// Static method to find intersection in between given track and HMPID chambers
-// Arguments: pTrk    - ESD track 
-//            xPc,yPc - track intersection with PC, LORS
-//   Returns: intersected chamber ID or -1
-  
-  AliHMPIDParam *pParam=AliHMPIDParam::Instance();
-  Float_t xRa=0,yRa=0,xPc=0,yPc=0,theta=0,phi=0;                                                //track intersection point and angles, LORS  
-  for(Int_t i=AliHMPIDDigit::kMinCh;i<=AliHMPIDDigit::kMaxCh;i++){                              //chambers loop
-    Double_t p1[3],n1[3]; pParam->Norm(i,n1); pParam->Lors2Mars(i,0,0,p1,AliHMPIDParam::kRad);  //point & norm  for RAD
-    Double_t p2[3],n2[3]; pParam->Norm(i,n2); pParam->Lors2Mars(i,0,0,p2,AliHMPIDParam::kPc);   //point & norm  for PC
-      
-    if(pTrk->Intersect(p1,n1,-GetBz())==kFALSE) continue;                                       //try to intersect track with the middle of radiator
-    if(pTrk->Intersect(p2,n2,-GetBz())==kFALSE) continue;                                       //try to intersect track with PC
-      
-    pParam->Mars2LorsVec(i,n1,theta,phi);                                                       //track angles at RAD
-    pParam->Mars2Lors   (i,p1,xRa,yRa);                                                         //TRKxRAD position
-    pParam->Mars2Lors   (i,p2,xPc,yPc);                                                         //TRKxPC position
-    xToPc=(Double_t)xPc;yToPc=(Double_t)yPc;                                                    //conversion float->double only
-    if(AliHMPIDDigit::IsInside(xPc,yPc,pParam->DistCut())==kFALSE) continue;             //not in active area  
-    pTrk->SetHMPIDtrk      (xRa,yRa,theta,phi);                                                 //store track intersection info
-    pTrk->SetHMPIDcluIdx   (i,0);
-    return i;
-  }                                                                                             //chambers loop
-  return -1; //no intersection with HMPID chambers
-}
+// Static method to reconstruct Theta Ckov for all valid tracks of a given event.
+// Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time)
+//   Returns: error code, 0 if no errors
+  AliHMPIDRecon recon;                                                                          //instance of reconstruction class, nothing important in ctor
+  Double_t nmean=((TF1*)pNmean->At(3*iCh))->Eval(0);                                            //C6F14 Nmean for this chamber
+  if(pCluLst->GetEntriesFast()<4) return 1;                                                     //min 4 clusters (3 + 1 mip) to find a ring! 
+  if(recon.CkovHiddenTrk(pTrk,pCluLst,nmean)) return 0;                                         //search for track parameters and Cerenkov angle of this track
+  else return 1;                                                                                // error code: 0=no error,1=fit not performed;
+}//Recon()
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++