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1 /**************************************************************************
2  * Copyright(c) 1998-1999, 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 /*
17 $Log$
18 Revision 1.5  2001/11/06 17:19:41  cblume
19 Add detailed geometry and simple simulator
20
21 Revision 1.4  2001/10/21 18:30:02  hristov
22 Several pointers were set to zero in the default constructors to avoid memory management problems
23
24 Revision 1.3  2000/10/15 23:40:01  cblume
25 Remove AliTRDconst
26
27 Revision 1.2  2000/10/06 16:49:46  cblume
28 Made Getters const
29
30 Revision 1.1.2.2  2000/10/04 16:34:58  cblume
31 Replace include files by forward declarations
32
33 Revision 1.1.2.1  2000/09/22 14:47:52  cblume
34 Add the tracking code
35
36 */                        
37              
38 //////////////////////////////////////////////////////////////////////
39 //                                                                  //
40 //  Hit compression class                                           //
41 //  Adapted from AliTPCTimeBin by Marian                            //
42 //                                                                  //
43 //////////////////////////////////////////////////////////////////////
44                    
45 #include "AliTRDcluster.h" 
46 #include "AliTRDtimeBin.h" 
47
48 ClassImp(AliTRDtimeBin)
49
50 //______________________________________________________
51
52   AliTRDtimeBin::AliTRDtimeBin() {
53   //default constructor
54     fN=0;
55     for (UInt_t i=0; i<kMaxClusterPerTimeBin; i++) 
56       fClusters[i]=0;
57   }
58 //______________________________________________________
59
60 void AliTRDtimeBin::InsertCluster(AliTRDcluster* c, UInt_t index) {
61
62 // Insert cluster in TimeBin cluster array.
63 // Clusters are sorted according to Y coordinate.  
64
65   if (fN==kMaxClusterPerTimeBin) {
66     printf("AliTRDtimeBin::InsertCluster(): Too many clusters !\n"); 
67     return;
68   }
69   if (fN==0) {fIndex[0]=index; fClusters[fN++]=c; return;}
70   Int_t i=Find(c->GetY());
71   memmove(fClusters+i+1 ,fClusters+i,(fN-i)*sizeof(AliTRDcluster*));
72   memmove(fIndex   +i+1 ,fIndex   +i,(fN-i)*sizeof(UInt_t)); 
73   fIndex[i]=index; fClusters[i]=c; fN++;
74 }  
75
76 //______________________________________________________
77
78 Int_t AliTRDtimeBin::Find(Double_t y) const {
79
80 // Returns index of the cluster nearest in Y    
81
82   if (y <= fClusters[0]->GetY()) return 0;
83   if (y > fClusters[fN-1]->GetY()) return fN;
84   Int_t b=0, e=fN-1, m=(b+e)/2;
85   for (; b<e; m=(b+e)/2) {
86     if (y > fClusters[m]->GetY()) b=m+1;
87     else e=m;
88   }
89   return m;
90 }    
91
92 //______________________________________________________
93 AliTRDcluster *AliTRDtimeBin::operator[](Int_t i)
94 {
95   //
96   // Index operator
97   //
98  
99   return fClusters[i];
100
101 }