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 *
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 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 // Base class for ALICE modules. Both sensitive modules (detectors) and //
21 // non-sensitive ones are described by this base class. This class //
22 // supports the hit and digit trees produced by the simulation and also //
23 // the objects produced by the reconstruction. //
25 // This class is also responsible for building the geometry of the //
30 <img src="picts/AliDetectorClass.gif">
34 ///////////////////////////////////////////////////////////////////////////////
40 #include "AliConfig.h"
41 #include "AliDetector.h"
43 #include "AliPoints.h"
44 #include "AliLoader.h"
51 //_______________________________________________________________________
52 AliDetector::AliDetector():
67 // Default constructor for the AliDetector class
71 //_______________________________________________________________________
72 AliDetector::AliDetector(const AliDetector &det):
89 //_____________________________________________________________________________
90 AliDetector::AliDetector(const char* name,const char *title):
91 AliModule(name,title),
105 // Normal constructor invoked by all Detectors.
106 // Create the list for detector specific histograms
107 // Add this Detector to the global list of Detectors in Run.
111 AliConfig::Instance()->Add(this);
115 //_______________________________________________________________________
116 AliDetector::~AliDetector()
122 // Delete space point structure
128 // Delete digits structure
137 fLoader->GetModulesFolder()->Remove(this);
142 //_______________________________________________________________________
143 void AliDetector::Publish(const char */*dir*/, void */*address*/, const char */*name*/) const
146 // Register pointer to detector objects.
148 MayNotUse("Publish");
151 //_______________________________________________________________________
152 TBranch* AliDetector::MakeBranchInTree(TTree *tree, const char* name,
153 void* address, Int_t size,
156 return(MakeBranchInTree(tree,name,0,address,size,99,file));
159 //_______________________________________________________________________
160 TBranch* AliDetector::MakeBranchInTree(TTree *tree, const char* name,
161 const char *classname,
162 void* address,Int_t size,
163 Int_t splitlevel, const char */*file*/)
166 // Makes branch in given tree and diverts them to a separate file
171 AliDebug(2,Form("Making Branch %s",name));
174 AliError(Form("Making Branch %s Tree is NULL",name));
177 TBranch *branch = tree->GetBranch(name);
180 AliDebug(2,Form("Branch %s is already in tree.",name));
186 branch = tree->Branch(name,classname,address,size,splitlevel);
190 branch = tree->Bronch(name, "TClonesArray", address, size, splitlevel);
192 AliDebug(2,Form("Branch %s returning branch %#x",name,branch));
196 //_______________________________________________________________________
197 void AliDetector::Browse(TBrowser *b)
200 // Insert Detector objects in the list of objects to be browsed
203 if( fHits == 0) return;
207 nobjects = fHits->GetEntries();
208 for (i=0;i<nobjects;i++) {
210 sprintf(name,"%s_%d",obj->GetName(),i);
211 b->Add(obj, &name[0]);
215 //_______________________________________________________________________
216 void AliDetector::Copy(TObject &) const
219 // Copy *this onto det -- not implemented
221 AliFatal("Not implemented");
224 //_______________________________________________________________________
225 void AliDetector::FinishRun()
228 // Procedure called at the end of a run.
232 //_______________________________________________________________________
233 AliHit* AliDetector::FirstHit(Int_t track)
236 // Initialise the hit iterator
237 // Return the address of the first hit for track
238 // If track>=0 the track is read from disk
239 // while if track<0 the first hit of the current
243 gAlice->ResetHits(); //stupid = if N detector this method is called N times
244 TreeH()->GetEvent(track); //skowron
247 fMaxIterHit=fHits->GetEntriesFast();
249 if(fMaxIterHit) return dynamic_cast<AliHit*>(fHits->UncheckedAt(0));
253 //_______________________________________________________________________
254 AliHit* AliDetector::NextHit()
257 // Return the next hit for the current track
260 if(++fCurIterHit<fMaxIterHit)
261 return dynamic_cast<AliHit*>(fHits->UncheckedAt(fCurIterHit));
265 AliWarning("Hit Iterator called without calling FistHit before");
270 //_______________________________________________________________________
271 void AliDetector::LoadPoints(Int_t)
274 // Store x, y, z of all hits in memory
278 AliError(Form("fHits == 0. Name is %s",GetName()));
282 Int_t nhits = fHits->GetEntriesFast();
285 // Error("LoadPoints","nhits == 0. Name is %s",GetName());
288 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
289 if (fPoints == 0) fPoints = new TObjArray(tracks);
292 Int_t *ntrk=new Int_t[tracks];
293 Int_t *limi=new Int_t[tracks];
294 Float_t **coor=new Float_t*[tracks];
295 for(Int_t i=0;i<tracks;i++) {
301 AliPoints *points = 0;
304 Int_t chunk=nhits/4+1;
306 // Loop over all the hits and store their position
307 for (Int_t hit=0;hit<nhits;hit++) {
308 ahit = dynamic_cast<AliHit*>(fHits->UncheckedAt(hit));
309 trk=ahit->GetTrack();
310 if(trk>tracks) AliFatal(Form("Found track number %d, max track %d",trk, tracks));
311 if(ntrk[trk]==limi[trk])
314 // Initialise a new track
315 fp=new Float_t[3*(limi[trk]+chunk)];
318 memcpy(fp,coor[trk],sizeof(Float_t)*3*limi[trk]);
328 fp[3*ntrk[trk] ] = ahit->X();
329 fp[3*ntrk[trk]+1] = ahit->Y();
330 fp[3*ntrk[trk]+2] = ahit->Z();
334 for(trk=0; trk<tracks; ++trk) {
336 points = new AliPoints();
337 points->SetMarkerColor(GetMarkerColor());
338 points->SetMarkerSize(GetMarkerSize());
339 points->SetDetector(this);
340 points->SetParticle(trk);
341 points->SetPolyMarker(ntrk[trk],coor[trk],GetMarkerStyle());
342 fPoints->AddAt(points,trk);
352 //_______________________________________________________________________
353 void AliDetector::MakeBranch(Option_t *option)
356 // Create a new branch for this detector in its treeH
359 AliDebug(2,Form(" for %s",GetName()));
360 const char *cH = strstr(option,"H");
362 if (fHits && TreeH() && cH)
364 MakeBranchInTree(TreeH(), GetName(), &fHits, fBufferSize, 0);
368 //_______________________________________________________________________
369 void AliDetector::ResetDigits()
372 // Reset number of digits and the digits array
375 if (fDigits) fDigits->Clear();
378 //_______________________________________________________________________
379 void AliDetector::ResetHits()
382 // Reset number of hits and the hits array
385 if (fHits) fHits->Clear();
388 //_______________________________________________________________________
389 void AliDetector::ResetPoints()
392 // Reset array of points
401 //_______________________________________________________________________
402 void AliDetector::SetTreeAddress()
405 // Set branch address for the Hits and Digits Trees
409 // Branch address for hit tree
411 TTree *tree = TreeH();
413 branch = tree->GetBranch(GetName());
416 AliDebug(2,Form("(%s) Setting for Hits",GetName()));
417 branch->SetAddress(&fHits);
420 { //can be invoked before branch creation
421 AliDebug(2,Form("(%s) Failed for Hits. Can not find branch in tree.",GetName()));
426 // Branch address for digit tree
427 TTree *treeD = fLoader->TreeD();
428 if (treeD && fDigits) {
429 branch = treeD->GetBranch(GetName());
430 if (branch) branch->SetAddress(&fDigits);
433 AliModule::SetTreeAddress();
436 //_______________________________________________________________________
437 void AliDetector::MakeTree(Option_t *option)
439 //makes a tree (container) for the data defined in option
442 //"S" - summable digits
443 //"R" - recontructed points and tracks
445 AliLoader* loader = GetLoader();
448 AliError(Form("Can not get loader for %s",GetName()));
451 loader->MakeTree(option); //delegate this job to getter
454 //_______________________________________________________________________
455 AliLoader* AliDetector::MakeLoader(const char* topfoldername)
457 //builds standard getter (AliLoader type)
458 //if detector wants to use castomized getter, it must overload this method
460 AliDebug(1,Form("Creating standard getter for detector %s. Top folder is %s.",
461 GetName(),topfoldername));
463 fLoader = new AliLoader(GetName(),topfoldername);
467 //_______________________________________________________________________
468 TTree* AliDetector::TreeH() const
470 //Get the hits container from the folder
471 if (GetLoader() == 0x0)
473 //sunstitude this with make getter when we can obtain the event folder name
474 AliError("Can not get the getter");
478 TTree* tree = (TTree*)GetLoader()->TreeH();