ITS/AliITSDriftSpeedArraySDD.cxx

   1 /**************************************************************************
   2  * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 /* $Id$ */
  17
  18 ///////////////////////////////////////////////////////////////////
  19 //                                                               //
  20 // Implementation of the class with array of AliITSDriftSpeedSDD //
  21 // Origin: F.Prino, Torino, prino@to.infn.it                     //
  22 //                                                               //
  23 ///////////////////////////////////////////////////////////////////
  24
  25 #include "AliITSDriftSpeedArraySDD.h"
  26 #include "AliITSDriftSpeedSDD.h"
  27 #include "AliLog.h"
  28
  29 ClassImp(AliITSDriftSpeedArraySDD)
  30 //______________________________________________________________________
  31 AliITSDriftSpeedArraySDD::AliITSDriftSpeedArraySDD():
  32 TObject(),
  33 fNEvents(0),
  34 fDriftSpeedSDD(){
  35   // default constructor
  36   fDriftSpeedSDD.Expand(10);
  37 }
  38 //______________________________________________________________________
  39 AliITSDriftSpeedArraySDD::AliITSDriftSpeedArraySDD(Int_t numEv):
  40 TObject(),
  41 fNEvents(0),
  42 fDriftSpeedSDD(){
  43   // standard constructor
  44   fDriftSpeedSDD.Expand(numEv);
  45 }
  46 //______________________________________________________________________
  47 void AliITSDriftSpeedArraySDD::AddDriftSpeed(AliITSDriftSpeedSDD* drSpeed){
  48   // adds an AliITSDriftSpeedSDD object in the array
  49   fDriftSpeedSDD.AddLast(drSpeed);
  50   fNEvents++;
  51 }
  52 //______________________________________________________________________
  53 void AliITSDriftSpeedArraySDD::PrintAll() const{
  54   // print drift speed parameters for all elements in the array
  55   printf("Array Size=%d\n",fDriftSpeedSDD.GetSize());
  56   printf("Array Elements =%d\n",fNEvents);
  57   for(Int_t i=0;i<fNEvents; i++){
  58     printf("     ====== Array el. #%d ======\n",i);
  59     AliITSDriftSpeedSDD *d=(AliITSDriftSpeedSDD*)fDriftSpeedSDD.At(i);
  60     if(d) d->PrintDriftSpeedParameters();
  61   }
  62 }
  63 //______________________________________________________________________
  64 Double_t AliITSDriftSpeedArraySDD::GetDriftSpeed(Int_t iEvent, Double_t iAnode){
  65   // returns drift speed for given event number and anode
  66   if(!fDriftSpeedSDD.IsSorted()) fDriftSpeedSDD.Sort();
  67   if(fNEvents==1){
  68     AliITSDriftSpeedSDD *d=(AliITSDriftSpeedSDD*)fDriftSpeedSDD.At(0);
  69     return d->GetDriftSpeedAtAnode(iAnode);
  70   }else{
  71     Int_t nInjEv1=-1;
  72     Int_t nInjEv2=-1;
  73     AliITSDriftSpeedSDD *d1=NULL;
  74     AliITSDriftSpeedSDD *d2=NULL;
  75     for(Int_t i=0;i<fNEvents; i++){
  76       d1=d2;
  77       d2=(AliITSDriftSpeedSDD*)fDriftSpeedSDD.At(i);
  78       nInjEv1=nInjEv2;
  79       if(d2!=0){
  80         nInjEv2=d2->GetEventNumber();
  81         if(nInjEv2>=iEvent){
  82           if(i==0) d1=(AliITSDriftSpeedSDD*)fDriftSpeedSDD.At(i+1);
  83           nInjEv1=d1->GetEventNumber();
  84           break;
  85         }
  86       }
  87     }
  88     if(nInjEv1>=0 && nInjEv2>=0 && nInjEv1!=nInjEv2){
  89       Double_t v1=d1->GetDriftSpeedAtAnode(iAnode);
  90       Double_t v2=d2->GetDriftSpeedAtAnode(iAnode);
  91       Double_t vdrift=(v2-v1)*(iEvent-nInjEv1)/(nInjEv2-nInjEv1)+v1;
  92       return vdrift;
  93     }
  94   }
  95   AliWarning("Vdrift interpolation error\n");
  96   return -999.;
  97 }