2 // Main authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007
4 /**************************************************************************
5 * Copyright(c) 1998-2008, ALICE Experiment at CERN, all rights reserved. *
6 * See http://aliceinfo.cern.ch/Offline/AliRoot/License.html for *
7 * full copyright notice. *
8 **************************************************************************/
16 #include <TEveManager.h>
17 #include <TEvePointSet.h>
18 #include <EveBase/AliEveEventManager.h>
20 #include <AliRunLoader.h>
21 #include <AliCluster.h>
23 #include <TClonesArray.h>
27 TEvePointSet* its_clusters(TEveElement* cont=0, Float_t maxR=50)
29 AliEveEventManager::AssertGeometry();
31 AliRunLoader* rl = AliEveEventManager::AssertRunLoader();
32 rl->LoadRecPoints("ITS");
34 TTree *cTree = rl->GetTreeR("ITS", false);
38 TClonesArray *cl = NULL;
39 TBranch *branch = cTree->GetBranch("ITSRecPoints");
40 branch->SetAddress(&cl);
42 TEvePointSet* clusters = new TEvePointSet(10000);
43 clusters->SetOwnIds(kTRUE);
45 Int_t nentr = (Int_t) cTree->GetEntries();
46 for (Int_t i=0; i<nentr; i++)
48 if (!cTree->GetEvent(i)) continue;
50 Int_t ncl = cl->GetEntriesFast();
52 Float_t maxRsqr = maxR*maxR;
53 for (Int_t icl = 0; icl < ncl; ++icl)
55 AliCluster *c = (AliCluster*) cl->UncheckedAt(icl);
56 // This really should not happen, but did in online display once.
59 ::Warning("its_clusters", "Got NULL AliCluster*, idx=%d, N=%d.",
63 Float_t g[3]; //global coordinates
65 if (g[0]*g[0] + g[1]*g[1] < maxRsqr)
67 clusters->SetNextPoint(g[0], g[1], g[2]);
68 AliCluster *atp = new AliCluster(*c);
69 clusters->SetPointId(atp);
74 rl->UnloadRecPoints("ITS");
76 if (clusters->Size() == 0 && gEve->GetKeepEmptyCont() == kFALSE) {
77 Warning("its_clusters.C", "No ITS clusters");
82 clusters->SetName("ITS Clusters");
84 clusters->SetTitle(Form("N=%d", clusters->Size()));
86 const TString viz_tag("REC Clusters ITS");
88 clusters->ApplyVizTag(viz_tag, "Clusters");
90 gEve->AddElement(clusters, cont);