negative indexes allowed

[u/mrichter/AliRoot.git] / MUON / MUONtrigger.C

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */

#include "AliRun.h"
#include "AliRunLoader.h"
#include "AliLoader.h"
#include "AliMUON.h"
#include "AliMUONData.h"


AliRun * gAlice;

//get trigger decision and write it in TreeR of MUON.RecPoints.root

void MUONtrigger (char* filename="galice.root", 
		  Int_t evNumber1=0, Int_t evNumber2=9999)
{
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Creating Run Loader and openning file containing Hits
  AliRunLoader * RunLoader = AliRunLoader::Open(filename,"MUONFolder","UPDATE");
  if (RunLoader ==0x0) {
    printf(">>> Error : Error Opening %s file \n",filename);
    return;
  }

  // Loading AliRun master
  RunLoader->UnloadgAlice();
  RunLoader->LoadgAlice();
  gAlice = RunLoader->GetAliRun();

  // Loading MUON subsystem
  AliMUON * MUON = (AliMUON *) gAlice->GetDetector("MUON");
  AliLoader * MUONLoader = RunLoader->GetLoader("MUONLoader");
  AliMUONData * muondata = MUON->GetMUONData();
  muondata->SetLoader(MUONLoader);

  Int_t ievent, nevents;
  nevents = RunLoader->GetNumberOfEvents();

  MUONLoader->LoadDigits("READ");
  MUONLoader->LoadRecPoints("UPDATE");



//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  if (evNumber2>nevents) evNumber2=nevents;
   for (Int_t ievent=evNumber1; ievent<evNumber2; ievent++) { // event loop
       printf("event %d\n",ievent);
       RunLoader->GetEvent(ievent);       
       // Test if rawcluster has already been done before
       if (MUONLoader->TreeR() == 0x0) 
	 MUONLoader->MakeRecPointsContainer();
       else {
	 if (muondata->IsTriggerBranchesInTree()){ // Test if rawcluster has already been done before
	   if (ievent==evNumber1) MUONLoader->UnloadRecPoints();
	   MUONLoader->MakeRecPointsContainer();  // Redoing clusterisation
	   Info("RecPointsContainer","Recreating RecPointsContainer and deleting previous ones");
	 }
       }
       muondata->MakeBranch("GLT");
       muondata->SetTreeAddress("D,GLT");
       MUON->Trigger(ievent); 
       muondata->ResetDigits();
       muondata->ResetTrigger();
   } // event loop 
   MUONLoader->UnloadDigits();
   MUONLoader->UnloadRecPoints();
}