From Pawel Debski:
[u/mrichter/AliRoot.git] / EVE / alice-macros / acorde_hits.C
1 // $Id$
2 // Main authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007
3
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  **************************************************************************/
9
10 TEvePointSet*
11 acorde_hits(const char  *varexp    = "ACORDE.fX:ACORDE.fY:ACORDE.fZ",
12             const char  *selection = "",
13             TEveElement *cont      = 0)
14 {
15   AliRunLoader* rl =  AliEveEventManager::AssertRunLoader();
16   rl->LoadHits("ACORDE");
17
18   TTree* ht = rl->GetTreeH("ACORDE", false);
19
20   TEvePointSet* points = new TEvePointSet(Form("SIM Hits ACORDE '%s'", selection));
21
22   TEvePointSelector ps(ht, points, varexp, selection);
23   ps.Select();
24
25   if(points->Size() == 0 && gEve->GetKeepEmptyCont() == kFALSE)
26   {
27     Warning("acorde_hits", Form("No hits match '%s'", selection));
28     delete points;
29     return 0;
30   }
31
32   points->SetTitle(Form("N=%d", points->Size()));
33   points->SetMarkerSize(.5);
34   points->SetMarkerColor(2);
35
36   gEve->AddElement(points, cont);
37   gEve->Redraw3D();
38
39   return points;
40 }