EVE/alice-macros/its_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 its_hits(const char *varexp    = "fX:fY:fZ",
  12          const char *selection = "",
  13          TEveElement* cont = 0)
  14 {
  15   AliRunLoader* rl =  AliEveEventManager::AssertRunLoader();
  16   rl->LoadHits("ITS");
  17
  18   TTree* ht = rl->GetTreeH("ITS", false);
  19
  20   TEvePointSet* points = new TEvePointSet(Form("ITS Hits '%s'", selection));
  21
  22   TEvePointSelector ps(ht, points, varexp, selection);
  23   // ps.SetSubIdExp("fTrack:fStatus");
  24   ps.Select();
  25
  26   if(points->Size() == 0 && gEve->GetKeepEmptyCont() == kFALSE) {
  27     Warning("its_hits", Form("No hits match '%s'", selection));
  28     delete points;
  29     return 0;
  30   }
  31
  32   points->SetName(Form("ITS Hits"));
  33   points->SetTitle(Form("N=%d", points->Size()));
  34
  35   points->ApplyVizTag("SIM Hits ITS", "Hits");
  36
  37   gEve->AddElement(points, cont);
  38   gEve->Redraw3D();
  39
  40   return points;
  41 }