1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 *
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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 **************************************************************************/
16 //_________________________________________________________________________
17 // Base Class for PHOS Reconstructed Points
18 // Why should I put meaningless comments
21 //*-- Author: Gines Martinez (SUBATECH)
23 // --- ROOT system ---
25 #include "TClonesArray.h"
27 // --- Standard library ---
29 // --- AliRoot header files ---
31 #include "AliPHOSGeometry.h"
32 #include "AliPHOSDigit.h"
33 #include "AliPHOSRecPoint.h"
34 #include "AliPHOSGetter.h"
36 ClassImp(AliPHOSRecPoint)
39 //____________________________________________________________________________
40 AliPHOSRecPoint::AliPHOSRecPoint()
50 //____________________________________________________________________________
51 AliPHOSRecPoint::AliPHOSRecPoint(const char * opt) : AliRecPoint(opt)
60 //____________________________________________________________________________
61 Int_t AliPHOSRecPoint::DistancetoPrimitive(Int_t px, Int_t py)
63 // Compute distance from point px,py to a AliPHOSRecPoint considered as a Tmarker
64 // Compute the closest distance of approach from point px,py to this marker.
65 // The distance is computed in pixels units.
67 TVector3 pos(0.,0.,0.) ;
68 GetLocalPosition( pos) ;
71 const Int_t kMaxDiff = 10;
72 Int_t pxm = gPad->XtoAbsPixel(x);
73 Int_t pym = gPad->YtoAbsPixel(y);
74 Int_t dist = (px-pxm)*(px-pxm) + (py-pym)*(py-pym);
76 if (dist > kMaxDiff) return 9999;
80 //___________________________________________________________________________
81 void AliPHOSRecPoint::Draw(Option_t *option)
83 // Draw this AliPHOSRecPoint with its current attributes
88 //______________________________________________________________________________
89 void AliPHOSRecPoint::ExecuteEvent(Int_t event, Int_t px, Int_t py) const
91 // Execute action corresponding to one event
92 // This member function is called when a AliPHOSRecPoint is clicked with the locator
94 // If Left button is clicked on AliPHOSRecPoint, the digits are switched on
95 // and switched off when the mouse button is released.
97 // static Int_t pxold, pyold;
99 static TGraph * digitgraph = 0 ;
100 static TPaveText* clustertext = 0 ;
102 if (!gPad->IsEditable()) return;
108 AliPHOSDigit * digit ;
109 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
110 AliPHOSGeometry * phosgeom = const_cast<AliPHOSGeometry*>(gime->PHOSGeometry());
115 const Int_t kMulDigit=AliPHOSRecPoint::GetDigitsMultiplicity() ;
116 Float_t * xi = new Float_t [kMulDigit] ;
117 Float_t * zi = new Float_t [kMulDigit] ;
119 for(iDigit = 0; iDigit < kMulDigit; iDigit++) {
120 Fatal("AliPHOSRecPoint::ExecuteEvent", "-> Something wrong with the code");
121 digit = 0 ; //dynamic_cast<AliPHOSDigit *>((fDigitsList)[iDigit]);
122 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
123 phosgeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]) ;
127 digitgraph = new TGraph(fMulDigit,xi,zi);
128 digitgraph-> SetMarkerStyle(5) ;
129 digitgraph-> SetMarkerSize(1.) ;
130 digitgraph-> SetMarkerColor(1) ;
131 digitgraph-> Draw("P") ;
135 TVector3 pos(0.,0.,0.) ;
136 GetLocalPosition(pos) ;
137 clustertext = new TPaveText(pos.X()-10,pos.Z()+10,pos.X()+50,pos.Z()+35,"") ;
140 sprintf(line1,"Energy=%1.2f GeV",GetEnergy()) ;
141 sprintf(line2,"%d Digits",GetDigitsMultiplicity()) ;
142 clustertext ->AddText(line1) ;
143 clustertext ->AddText(line2) ;
144 clustertext ->Draw("");
168 //____________________________________________________________________________
169 void AliPHOSRecPoint::EvalAll(Float_t logWeight,TClonesArray * digits) {
170 //evaluates (if necessary) all RecPoint data members
172 EvalPrimaries(digits) ;
174 //____________________________________________________________________________
175 void AliPHOSRecPoint::EvalPHOSMod(AliPHOSDigit * digit)
177 // Returns the PHOS module in which the RecPoint is found
182 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
183 AliPHOSGeometry * phosgeom = const_cast<AliPHOSGeometry*>(gime->PHOSGeometry());
185 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
190 //______________________________________________________________________________
191 void AliPHOSRecPoint::EvalPrimaries(TClonesArray * digits)
193 // Constructs the list of primary particles (tracks) which have contributed to this RecPoint
194 // First in the list - primary, made strongest contribution to the center
197 AliPHOSDigit * digit ;
198 Int_t * tempo = new Int_t[fMaxTrack] ;
200 //Find digit in center
201 AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance("IHEP","") ;
203 Error("EvalPrimaries","Can not instantiate PHOS geometry") ;
208 GetGlobalPosition(pos,mat) ;
211 geom->ImpactOnEmc(pos.Theta(),pos.Phi(),module,z,x);
213 geom->RelPosToAbsId(module,x,z,absId) ;
216 for ( index = 0 ; index < GetDigitsMultiplicity() ; index++ ) { // all digits
217 digit = dynamic_cast<AliPHOSDigit *>(digits->At( fDigitsList[index] )) ;
218 if(digit->GetId() == absId){
219 fMulTrack = digit->GetNprimary() ;
220 for(Int_t ii = 0 ; ii < fMulTrack ; ii++)
221 tempo[ii] = digit->GetPrimary(ii+1) ;
225 for ( index = 0 ; index < GetDigitsMultiplicity() ; index++ ) { // all digits
226 digit = dynamic_cast<AliPHOSDigit *>(digits->At( fDigitsList[index] )) ;
227 if(digit->GetId()!=absId){ //already done
228 Int_t nprimaries = digit->GetNprimary() ;
230 Int_t * newprimaryarray = new Int_t[nprimaries] ;
232 for ( ii = 0 ; ii < nprimaries ; ii++)
233 newprimaryarray[ii] = digit->GetPrimary(ii+1) ;
236 for ( jndex = 0 ; jndex < nprimaries ; jndex++ ) { // all primaries in digit
237 if ( fMulTrack > fMaxTrack ) {
239 Error("EvalPrimaries", "GetNprimaries ERROR > increase fMaxTrack" ) ;
242 Int_t newprimary = newprimaryarray[jndex] ;
244 Bool_t already = kFALSE ;
245 for ( kndex = 0 ; kndex < fMulTrack ; kndex++ ) { //check if not already stored
246 if ( newprimary == tempo[kndex] ){
251 if ( !already) { // store it
252 tempo[fMulTrack] = newprimary ;
255 } // all primaries in digit
256 delete [] newprimaryarray ;
262 fTracksList = new Int_t[fMulTrack] ;
263 for(index = 0; index < fMulTrack; index++)
264 fTracksList[index] = tempo[index] ;
269 //____________________________________________________________________________
270 void AliPHOSRecPoint::GetGlobalPosition(TVector3 & gpos, TMatrix & gmat) const
272 // returns the position of the cluster in the global reference system of ALICE
273 // and the uncertainty on this position
276 AliPHOSGetter::GetInstance()->PHOSGeometry()->GetGlobal(this, gpos, gmat) ;
281 //______________________________________________________________________________
282 void AliPHOSRecPoint::Paint(Option_t *)
284 // Paint this ALiRecPoint as a TMarker with its current attributes
286 TVector3 pos(0.,0.,0.) ;
287 GetLocalPosition(pos) ;
288 Coord_t x = pos.X() ;
289 Coord_t y = pos.Z() ;
290 Color_t markercolor = 1 ;
291 Size_t markersize = 1. ;
292 Style_t markerstyle = 5 ;
294 if (!gPad->IsBatch()) {
295 gVirtualX->SetMarkerColor(markercolor) ;
296 gVirtualX->SetMarkerSize (markersize) ;
297 gVirtualX->SetMarkerStyle(markerstyle) ;
299 gPad->SetAttMarkerPS(markercolor,markerstyle,markersize) ;
300 gPad->PaintPolyMarker(1,&x,&y,"") ;