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(10){
  35   // default constructor
  36 }
  37 //______________________________________________________________________
  38 AliITSDriftSpeedArraySDD::AliITSDriftSpeedArraySDD(Int_t numEv):
  39 TObject(),
  40 fNEvents(0),
  41 fDriftSpeedSDD(numEv){
  42   // standard constructor
  43 }
  44 //______________________________________________________________________
  45 void AliITSDriftSpeedArraySDD::AddDriftSpeed(AliITSDriftSpeedSDD* drSpeed){
  46   // adds an AliITSDriftSpeedSDD object in the array
  47   fDriftSpeedSDD.AddLast(drSpeed);
  48   fNEvents++;
  49 }
  50 //______________________________________________________________________
  51 void AliITSDriftSpeedArraySDD::PrintAll() const{
  52   // print drift speed parameters for all elements in the array
  53   printf("Array Size=%d\n",fDriftSpeedSDD.GetSize());
  54   printf("Array Elements =%d\n",fNEvents);
  55   for(Int_t i=0;i<fNEvents; i++){
  56     printf("     ====== Array el. #%d ======\n",i);
  57     AliITSDriftSpeedSDD *d=(AliITSDriftSpeedSDD*)fDriftSpeedSDD.At(i);
  58     if(d) d->PrintDriftSpeedParameters();
  59   }
  60 }
  61 //______________________________________________________________________
  62 Double_t AliITSDriftSpeedArraySDD::GetDriftSpeed(Int_t iEvent, Double_t iAnode){
  63   // returns drift speed for given event number and anode
  64   if(!fDriftSpeedSDD.IsSorted()) fDriftSpeedSDD.Sort();
  65   if(fNEvents==1){
  66     AliITSDriftSpeedSDD *d=(AliITSDriftSpeedSDD*)fDriftSpeedSDD.At(0);
  67     return d->GetDriftSpeedAtAnode(iAnode);
  68   }else{
  69     Int_t nInjEv1=-1;
  70     Int_t nInjEv2=-1;
  71     AliITSDriftSpeedSDD *d1=NULL;
  72     AliITSDriftSpeedSDD *d2=NULL;
  73     for(Int_t i=0;i<fNEvents; i++){
  74       d1=d2;
  75       d2=(AliITSDriftSpeedSDD*)fDriftSpeedSDD.At(i);
  76       nInjEv1=nInjEv2;
  77       if(d2!=0){
  78         nInjEv2=d2->GetEventNumber();
  79         if(nInjEv2>=iEvent){
  80           if(i==0) d1=(AliITSDriftSpeedSDD*)fDriftSpeedSDD.At(i+1);
  81           nInjEv1=d1->GetEventNumber();
  82           break;
  83         }
  84       }
  85     }
  86     if(nInjEv1>=0 && nInjEv2>=0 && nInjEv1!=nInjEv2){
  87       Double_t v1=d1->GetDriftSpeedAtAnode(iAnode);
  88       Double_t v2=d2->GetDriftSpeedAtAnode(iAnode);
  89       Double_t vdrift=(v2-v1)*(iEvent-nInjEv1)/(nInjEv2-nInjEv1)+v1;
  90       return vdrift;
  91     }
  92   }
  93   AliWarning("Vdrift interpolation error\n");
  94   return -999.;
  95 }