protect against missing pt in track references

[u/mrichter/AliRoot.git] / EVE / alice-macros / geom_gentle_trd.C

// $Id: geom_gentle.C 24242 2008-03-02 02:23:52Z mtadel $
// Main authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007

/**************************************************************************
 * Copyright(c) 1998-2008, ALICE Experiment at CERN, all rights reserved. *
 * See http://aliceinfo.cern.ch/Offline/AliRoot/License.html for          *
 * full copyright notice.                                                 *
 **************************************************************************/

TEveGeoShape* geom_gentle_trd()
{
  TFile f("$ALICE_ROOT/EVE/alice-data/gentle_geo_trd.root");
  TEveGeoShapeExtract* gse = (TEveGeoShapeExtract*) f.Get("Gentle TRD");
  TEveGeoShape* gsre = TEveGeoShape::ImportShapeExtract(gse);
  gEve->AddGlobalElement(gsre);
  f.Close();

  // Fix visibility, color and transparency
  gsre->SetRnrSelf(kFALSE);
  for (TEveElement::List_i i = gsre->BeginChildren(); i != gsre->EndChildren(); ++i)
  {
    TEveGeoShape* lvl1 = (TEveGeoShape*) *i;
    lvl1->SetRnrSelf(kFALSE);
    for (TEveElement::List_i j = lvl1->BeginChildren(); j != lvl1->EndChildren(); ++j)
    {
      TEveGeoShape* lvl2 = (TEveGeoShape*) *j;
      lvl2->SetRnrSelf(kTRUE);
      lvl2->SetMainColor(3);
      lvl2->SetMainTransparency(80);
    }
    
  }

  return gsre;
}