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Additional protection in case of negative indexes. More investigation is needed
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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 /* $Id$ */
17
18 #include "AliMUONChamberTrigger.h"
19 #include "AliMUONResponseTrigger.h"
20 #include "AliMUONHit.h"
21 #include "AliMUON.h"
22 #include "AliMUONSegmentation.h"
23 #include "AliMUONGeometrySegmentation.h"
24 #include "AliMUONGeometryTransformer.h"
25 #include "AliLog.h"
26
27 ClassImp(AliMUONChamberTrigger)
28
29 //-------------------------------------------
30
31 AliMUONChamberTrigger::AliMUONChamberTrigger()
32   : AliMUONChamber(),
33     fkGeomTransformer(0)
34 {
35 // Default constructor
36 }
37
38 //-------------------------------------------
39
40 AliMUONChamberTrigger::AliMUONChamberTrigger(const AliMUONChamberTrigger& right) 
41   : AliMUONChamber(right) 
42 {  
43 /// Protected copy constructor (not implemented)
44
45   AliFatal("Copy constructor not provided.");
46 }
47
48 //-------------------------------------------
49
50 AliMUONChamberTrigger::AliMUONChamberTrigger(Int_t id,
51                               const AliMUONGeometryTransformer* kGeometryTransformer) 
52   : AliMUONChamber(id),
53     fkGeomTransformer(kGeometryTransformer)
54 {
55 // Constructor using chamber id
56 }
57
58 //-------------------------------------------
59 AliMUONChamberTrigger& 
60 AliMUONChamberTrigger::operator=(const AliMUONChamberTrigger& right)
61 {
62 /// Protected assignement operator (not implemented)
63
64   // check assignement to self
65   if (this == &right) return *this;
66
67   AliFatal("Assignement operator not provided.");
68     
69   return *this;  
70 }    
71
72 //-------------------------------------------
73 void AliMUONChamberTrigger::DisIntegration(AliMUONHit* hit,
74                                            Int_t& nnew,
75                                            Float_t newclust[6][500]) 
76 {
77 //    
78 //  Generates pad hits (simulated cluster) 
79 //  using the segmentation and the response model
80
81
82   Float_t   tof = hit->Age();
83   Float_t  xhit = hit->X();
84   Float_t  yhit = hit->Y();
85   Float_t  zhit = hit->Z();
86   Int_t      id = hit->DetElemId();
87
88   Int_t twentyNano;
89   if (tof<75*TMath::Power(10,-9)) {
90     twentyNano=1;
91   } else {
92     twentyNano=100;
93   }
94
95   Float_t qp;
96   nnew=0;
97   for (Int_t i = 1; i <= 2; i++) {
98
99     AliMUONGeometrySegmentation* segmentation=
100       fMUON->GetSegmentation()->GetModuleSegmentation(fId, i-1); 
101
102     
103 // Find the module & strip Id. which has fired
104     Int_t ix(-1);
105     Int_t iy(-1);
106     segmentation->GetPadI(id,xhit,yhit,0,ix,iy);
107 // treatment of GEANT hits w/o corresponding strip (due to the fact that
108 // geometry & segmentation are computed in a very slightly different way) 
109     if ( ix<0 || iy<0 ) 
110     {
111       Float_t lx,ly,lz;
112       fkGeomTransformer->Global2Local(id,xhit,yhit,0,lx,ly,lz);
113       AliWarning(Form("AliMUONChamberTrigger hit w/o strip %i-%d %e %e "
114                       "local %e %e %e ix,iy=%d,%d\n",id,i-1,xhit,yhit,lx,ly,lz,ix,iy));
115     } else 
116     {          
117       segmentation->SetPad(id,ix,iy);
118       if (xhit<0) ix = -ix;
119       //    printf(" fId id fnsec xhit yhit zhit ix iy %i %i %i %f %f %f %i %i \n",fId,i,id,xhit,yhit,zhit,ix,iy);
120       //     if (ix < 0 || ix > 10000) return;
121       //     if (iy < 0 || iy > 10000) return;
122       
123       // --- store signal information for this strip
124       newclust[0][nnew]=1.;                       // total charge
125       newclust[1][nnew]=ix;                       // ix-position of pad
126       newclust[2][nnew]=iy;                       // iy-position of pad
127       newclust[3][nnew]=twentyNano;               // time of flight
128       newclust[4][nnew]=segmentation->ISector();  // sector id
129       newclust[5][nnew]=(Float_t) i;              // counter
130       nnew++;
131       
132       // cluster-size if AliMUONResponseTriggerV1, nothing if AliMUONResponseTrigger
133       if (((AliMUONResponseTrigger*) fResponse)->SetGenerCluster()) {
134             
135             // set hits
136             segmentation->SetHit(id,xhit,yhit,zhit);
137             // get the list of nearest neighbours
138             Int_t nList, xList[10], yList[10];
139             segmentation->Neighbours(id,ix,iy,&nList,xList,yList);
140             
141             qp = 0;
142             for (Int_t j=0; j<nList; j++){       // loop over neighbours          
143                 if (xList[j]!=0) {                 // existing neighbour            
144                     if (j==0||j==5||qp!=0) {         // built-up cluster-size
145                         
146                         // neighbour real coordinates (just for checks here)
147                         Float_t x,y,z;
148                         segmentation->GetPadC(id,xList[j],yList[j],x,y,z);
149                         // set pad (fx fy & fix fiy are the current pad coord. & Id.)
150                         segmentation->SetPad(id,xList[j],yList[j]);       
151                         // get the chamber (i.e. current strip) response
152                         qp=fResponse->IntXY(id,segmentation);     
153                         
154                         if (qp > 0.5) {         
155                             // --- store signal information for neighbours 
156                             newclust[0][nnew]=qp;                      // total charge
157                             newclust[1][nnew]=segmentation->Ix();      // ix-pos. of pad
158                             newclust[2][nnew]=segmentation->Iy();      // iy-pos. of pad
159                             newclust[3][nnew]=twentyNano;              // time of flight
160                             newclust[4][nnew]=segmentation->ISector(); // sector id
161                             newclust[5][nnew]=(Float_t) i;             // counter
162                             nnew++;
163                         } // qp > 0.5 
164                     } // built-up cluster-size
165                 } // existing neighbour
166             } // loop over neighbours
167         } // endif hit w/o strip
168     } // loop over planes
169   } // if AliMUONResponseTriggerV1
170 }
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