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 #if !defined(__CINT__) || defined(__MAKECINT__)
  10 #include <TString.h>
  11 #include <TTree.h>
  12 #include <TEvePointSet.h>
  13 #include <TEveManager.h>
  14 #include <TEveTreeTools.h>
  15
  16 #include <AliRunLoader.h>
  17 #include <AliEveEventManager.h>
  18 #endif
  19
  20 TEvePointSet*
  21 vzero_hits(const char *varexp    = "fX:fY:fZ",
  22            const char *selection = "")
  23 {
  24   AliRunLoader* rl =  AliEveEventManager::AssertRunLoader();
  25   rl->LoadHits("VZERO");
  26
  27   TTree* ht = rl->GetTreeH("VZERO", false);
  28
  29   TEvePointSet* points = new TEvePointSet(Form("SIM Hits VZERO '%s'", selection));
  30
  31   TEvePointSelector ps(ht, points, varexp, selection);
  32   ps.Select();
  33
  34   points->SetName(Form("VZERO Hits"));
  35   const TString viz_tag("SIM Hits VZERO");
  36   points->ApplyVizTag(viz_tag, "Hits");
  37
  38   points->SetTitle(Form("N=%d", points->Size()));
  39   points->SetMarkerSize(.5);
  40   points->SetMarkerColor(2);
  41
  42   gEve->AddElement(points);
  43   gEve->Redraw3D();
  44
  45   return points;
  46 }