1 #ifndef ALIITSCLUSTERFINDERSSD_H
2 #define ALIITSCLUSTERFINDERSSD_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
7 #include "AliITSClusterFinder.h"
8 //#include "AliITSsegmentationSSD.h"
9 #include "AliITSDetTypeRec.h"
12 class AliITSclusterSSD;
13 class AliITSpackageSSD;
14 class AliITSsegmentation;
15 class AliITSsegmentationSSD;
17 class AliITSCalibration;
18 class AliITSCalibrationSSD;
20 class AliITSClusterFinderSSD: public AliITSClusterFinder{
23 AliITSClusterFinderSSD();
24 AliITSClusterFinderSSD(AliITSDetTypeRec* dettyp);
25 AliITSClusterFinderSSD(AliITSDetTypeRec* dettyp, TClonesArray *digits);
27 // AliITSClusterFinderSSD(AliITSsegmentation *seg, TClonesArray *digits);
28 virtual ~AliITSClusterFinderSSD();
29 void FindRawClusters(Int_t module);
33 AliITSClusterFinderSSD(const AliITSClusterFinderSSD &source); // Copy constructor
34 AliITSClusterFinderSSD& operator=(const AliITSClusterFinderSSD &source);// = operator
36 virtual AliITSsegmentationSSD* GetSeg()const{
37 return (AliITSsegmentationSSD*)fDetTypeRec->GetSegmentationModel(2);}
38 void InitReconstruction();
39 Bool_t CreateNewRecPoint(Float_t P, Float_t dP, Float_t N, Float_t dN,
40 Float_t Sig,Float_t dSig,
41 AliITSclusterSSD *clusterP,
42 AliITSclusterSSD *clusterN,Stat_t prob);
43 AliITSclusterSSD* GetPSideCluster(Int_t idx);
44 AliITSclusterSSD* GetNSideCluster(Int_t idx);
45 AliITSclusterSSD* GetCluster(Int_t idx, Bool_t side);
46 void FindNeighbouringDigits(Int_t module);
47 void SeparateOverlappedClusters();
48 void SplitCluster(TArrayI *list,Int_t nsplits,Int_t indx,Bool_t side);
49 Int_t SortDigitsP(Int_t start, Int_t end);
50 Int_t SortDigitsN(Int_t start, Int_t end);
51 void FillDigitsIndex();
53 void FillClIndexArrays(Int_t* arrayP, Int_t *arrayN) const;
54 void SortClusters(Int_t* arrayP, Int_t *arrayN);
55 Int_t SortClustersP(Int_t start, Int_t end,Int_t *array);
56 Int_t SortClustersN(Int_t start, Int_t end,Int_t *array);
57 void ClustersToPackages();
58 Int_t GetDiff(Float_t */*retx*/, Float_t */*rety*/) const {return 0;}
59 void CalcStepFactor(Float_t Psteo, Float_t Nsteo );
60 Bool_t GetCrossing(Float_t &x, Float_t &z); //x, y of strips crossing
61 void GetCrossingError(Float_t& dp, Float_t& dn);//x, y of strips crossing err.
62 virtual AliITSCalibrationSSD* GetResp(Int_t mod)const{
63 return (AliITSCalibrationSSD*) fDetTypeRec->GetCalibrationModel(mod);}//Return Response
66 // AliITS *fITS; //!Pointer to AliITS object
67 TClonesArray *fClusterP; //!
68 Int_t fNClusterP; //!Number of P side clusters in the array
69 TClonesArray *fClusterN; //!Number of N side clusters in the array
71 TClonesArray *fPackages; //!packages
73 TArrayI *fDigitsIndexP; //!Digits on P side
74 Int_t fNDigitsP; //!Number of Digits on P side
75 TArrayI *fDigitsIndexN; //!Digits on N side
76 Int_t fNDigitsN; //!Number of Digits on N side
78 Float_t fPitch; //!Strip pitch
79 Float_t fTanP; //!Pside stereo angle tangent
80 Float_t fTanN; //!Nside stereo angle tangent
84 /*************************************************/
85 /** parameters for reconstruction ****/
86 /** to be tune when slow simulation raliable ****/
87 /*************************************************/
89 //Float_t fAlpha1; //!
90 //Float_t fAlpha2; //!
91 //Float_t fAlpha3; //!
92 Float_t fPNsignalRatio; //!
94 static const Bool_t fgkSIDEP; //!
95 static const Bool_t fgkSIDEN; //!
97 static const Int_t fgkNoiseThreshold; // at least one strip in the cluster has to have a signal > fgkNoiseThresold*noise
99 Int_t fSFF; //!forward stepping factor
100 Int_t fSFB; //!backward stepping factor
102 ClassDef(AliITSClusterFinderSSD, 1) //Class for clustering and reconstruction of space points in SSDs