EVE/alice-macros/vzero_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 vzero_hits(const char *varexp    = "fX:fY:fZ",
  12            const char *selection = "")
  13 {
  14   AliRunLoader* rl =  AliEveEventManager::AssertRunLoader();
  15   rl->LoadHits("VZERO");
  16
  17   TTree* ht = rl->GetTreeH("VZERO", false);
  18
  19   TEvePointSet* points = new TEvePointSet(Form("SIM Hits VZERO '%s'", selection));
  20
  21   TEvePointSelector ps(ht, points, varexp, selection);
  22   ps.Select();
  23
  24   points->SetTitle(Form("N=%d", points->Size()));
  25   points->SetMarkerSize(.5);
  26   points->SetMarkerColor(2);
  27
  28   gEve->AddElement(points);
  29   gEve->Redraw3D();
  30
  31   return points;
  32 }