/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_7/src/Validation/MuonRPCGeometry/plugins/RPCPhiEff.cc

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// -*- C++ -*-
//
// Package:    RPCPhiEff
// Class:      RPCPhiEff
// 
//
// Original Author:  Tomasz Fruboes
//         Created:  Wed Mar  7 08:31:57 CET 2007
// $Id: RPCPhiEff.cc,v 1.5 2011/12/05 22:29:19 gowdy Exp $
//
//


// system include files
#include <memory>

// user include files
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/EDAnalyzer.h"

#include "FWCore/Framework/interface/Event.h"

#include "FWCore/ParameterSet/interface/ParameterSet.h"

#include <SimDataFormats/Track/interface/SimTrackContainer.h>

#include "DataFormats/MuonDetId/interface/RPCDetId.h"
#include "DataFormats/RPCDigi/interface/RPCDigiCollection.h"

#include <L1Trigger/RPCTrigger/interface/RPCLogCone.h>
#include <L1Trigger/RPCTrigger/interface/RPCConst.h>

#include "DataFormats/L1GlobalMuonTrigger/interface/L1MuRegionalCand.h"

#include "DataFormats/Math/interface/LorentzVector.h"
#include "Validation/MuonRPCGeometry/plugins/RPCPhiEff.h"

#include <iostream>
#include <set>
#include <fstream>
#include <sstream>

#include "L1Trigger/RPCTrigger/interface/RPCConst.h"

#include "DataFormats/Math/interface/deltaR.h"

//
// constants, enums and typedefs
//

//
// static data member definitions
//

//
// constructors and destructor
//
RPCPhiEff::RPCPhiEff(const edm::ParameterSet & ps) :
      m_rpcb( ps.getParameter< edm::InputTag >("rpcb") ),
      m_rpcf( ps.getParameter< edm::InputTag >("rpcf") ),
      m_g4( ps.getParameter< edm::InputTag >("g4") ),
      m_rpcdigi( ps.getParameter< edm::InputTag >("rpcdigi") )
{


    //m_outfileC.open("phieffC.txt");
    m_outfileR.open("muons.txt");

}


RPCPhiEff::~RPCPhiEff()
{

    //m_outfileC.close();
    m_outfileR.close();

}


//
// member functions
//

// ------------ method called to for each event  ------------
void
 RPCPhiEff::analyze(const edm::Event & iEvent,
                    const edm::EventSetup & iSetup)
{


    edm::Handle<std::vector<L1MuRegionalCand> > rpcBarrel;
    edm::Handle<std::vector<L1MuRegionalCand> > rpcForward;
  //iEvent.getByLabel("rpctrig","RPCb",rpcBarrel);
  //iEvent.getByLabel("rpctrig","RPCf",rpcForward);

    iEvent.getByLabel(m_rpcb,rpcBarrel);
    iEvent.getByLabel(m_rpcf,rpcForward);


    std::vector< edm::Handle<std::vector<L1MuRegionalCand> >  > handleVec;
    handleVec.push_back( rpcBarrel );  
    handleVec.push_back( rpcForward );  
  
  // Fetch MCdata
    edm::Handle<edm::SimTrackContainer> simTracks;
    iEvent.getByLabel(m_g4,simTracks);

    float etaGen = 0, phiGen = 0, ptGen = 0;
 
    int noOfMuons = 0;
    int noOfRecMuons = 0;
    int noOfMatchedRecMuons = 0; 

    bool firstRunForMuonMatchingCnt = true;

    // ask MC muons to be separated
    double deltarMin = -1;
    edm::SimTrackContainer::const_iterator simTrk = simTracks->begin();
    for (; simTrk != simTracks->end(); ++simTrk) { 

      if (simTrk->type() != -13 && simTrk->type()!=13) continue;

      edm::SimTrackContainer::const_iterator simTrk2 = simTrk;
      ++simTrk2;
      for (; simTrk2 != simTracks->end(); ++simTrk2) { 
        if (simTrk2->type() != -13 && simTrk2->type()!=13) continue;
        double drCand = reco::deltaR(simTrk2->momentum(), simTrk->momentum());
        if (drCand < deltarMin || deltarMin < 0) deltarMin = drCand;
      }


    }

    //std::cout << deltarMin << std::endl;
    if (deltarMin < 0.7 &&  deltarMin > 0) return;

    simTrk = simTracks->begin();
    for (; simTrk != simTracks->end(); simTrk++) {
        int type = simTrk->type();
        if (type == 13 || type == -13) {
            // Get the data
            const math::XYZTLorentzVectorD momentum = simTrk->momentum();
            etaGen = momentum.eta();
            ptGen = momentum.Pt();
            phiGen = momentum.phi();
            noOfMuons++;

            bool matched = false;
            int ptCodeRec = 0;
            int towerRec = 0;
            int phiRec = 0;
            //int muonsFound=0;
            int qual = 0;
            int ghost = 0; // number of ghost for montecarlo muon

            // Iter rpc muon cands, perform delta R matching
            // todo perform matching also using eta...
            for (  std::vector< edm::Handle<std::vector<L1MuRegionalCand> >  >::iterator it = handleVec.begin();
                   it != handleVec.end();
                   ++it  ) 
            {  
               std::vector<L1MuRegionalCand>::const_iterator itRPC;
               for (itRPC=(*it)->begin(); itRPC!=(*it)->end(); itRPC++){
                  int ptCode =  itRPC->pt_packed();
                  if (ptCode != 0) {

                     if (firstRunForMuonMatchingCnt) ++noOfRecMuons;
                     ptCodeRec=ptCode;
                     phiRec=itRPC->phi_packed();
                     qual = itRPC->quality();
                     towerRec = itRPC->eta_packed();
                     if (towerRec > 16) {
                      towerRec = - ( (~towerRec & 63) + 1);
                     }
                     // match
                     float pi = 3.14159265;
                     //float phiPhys = 2*pi*float(phiRec)/144-pi;
                     float phiScaled = phiGen;
                     if (phiScaled<0)  phiScaled += 2*pi;
                     int phiHwGen = (phiScaled)/2/pi*144;

                     //std::cout << "phi " << phiGen << " " << phiHwGen << " " << phiRec
                     //          << " eta " << etaGen << " " << m_const.towerNumFromEta(etaGen) << " "<< towerRec << std::endl;
                     if (  ( std::abs(phiHwGen-phiRec) < 10) && (std::abs(m_const.towerNumFromEta(etaGen)-towerRec)<1) )
                     {
                         if (matched) { // we have matched m.c. earlier, this is ghost
                            ++ghost;
                         }
                         matched = true;
                         ++noOfMatchedRecMuons;
                         m_outfileR << etaGen << " " << phiGen << " " << ptGen 
                                    << " "    << towerRec << " " << phiRec << " " << ptCodeRec << " " << qual
                                    << " "    << ghost
                                    << std::endl;
                     }
                  } // (ptCode != 0)
               } // muon cands iter ends
            } // barrell/fwd iter ends
            firstRunForMuonMatchingCnt=false;
            if (!matched) {
                         m_outfileR << etaGen << " " << phiGen << " " << ptGen 
                                    << " "    << 0 << " " << 0 << " " << 0 << " " << 0
                                    << " "    << 0
                                    << std::endl;

            }


        }
    }

    edm::EventID id = iEvent.id();
    edm::EventNumber_t evNum = id.event();
    edm::RunNumber_t rnNum = id.run();

    if (noOfMatchedRecMuons!=noOfRecMuons)  {
      edm::LogInfo("RPCEffWarn") << " MuonCands " << noOfRecMuons
                            << " matched " << noOfMatchedRecMuons
                            << " in run " << rnNum
                            << " event " << evNum;
    }



      /*
    m_outfileC << etaGen << " " << phiGen << " " << ptGen << " "
               << phiRec << " " << towerRec << " " << muonsFound  << " " 
               <<  fromCones(iEvent) <<std::endl;*/
    /*m_outfileR << etaGen << " " << phiGen << " " << ptGen << " " 
               << phiRec << " " << towerRec << " " << muonsFound  << " " 
               <<  fromRaw(iEvent) <<std::endl;*/


    /* 
    m_outfileR << etaGen << " " << phiGen << " " << ptGen << " " 
               << phiRec << " " << towerRec << " " << muonsFound  << " " 
               << std::endl;
    
    */


}

std::string RPCPhiEff::fromCones(const edm::Event & iEvent){

 return "";
}
/*
 std::stringstream ss;

 edm::Handle < RPCDigiCollection > rpcDigis;
    iEvent.getByLabel("muonRPCDigis", rpcDigis);

    L1RpcLogConesVec conesVec = m_theLinksystem.getCones(rpcDigis);

    L1RpcLogConesVec bestCones;

 //   bool wasRef = false;
    int maxfpCount = 0;


    for (L1RpcLogConesVec::const_iterator it = conesVec.begin();
         it != conesVec.end(); ++it) {
        int currentFpCount = it->getFiredPlanesCnt();

                if (currentFpCount > maxfpCount) {      // the cone pointed by it is better
                    bestCones.clear();
                    bestCones.push_back(*it);
                    maxfpCount = currentFpCount;
                }

    }                           // end of conesVec loop


    //int planePat = 0;
    //int one = 1;
    //int planeCnt = 0;

    if (bestCones.begin() != bestCones.end()) {
    
        L1RpcLogConesVec::const_iterator bc = bestCones.begin();
        for (int i = 0; i < 6; ++i) {

            if (bc->getHitsCnt(i)!=0) {
                //planePat = planePat | (one << i);
                //planeCnt++;
                ss << " " << i+1;
            }
        }
    }

  return ss.str();
}
*/

// ------------ Check hw planes fired using rpc digis
std::string RPCPhiEff::fromRaw(const edm::Event & iEvent){

   std::stringstream ss;

   // Digi data.
    edm::Handle<RPCDigiCollection> rpcDigis;
    iEvent.getByLabel(m_rpcdigi,rpcDigis);

    std::set<int> hwPlanes;

    RPCDigiCollection::DigiRangeIterator detUnitIt;
    for (detUnitIt=rpcDigis->begin();
         detUnitIt!=rpcDigis->end();
                 ++detUnitIt)
    {

        const RPCDigiCollection::Range& range = (*detUnitIt).second;
        bool hasBX0 = false;
        for (RPCDigiCollection::const_iterator digiIt = range.first;
            digiIt!=range.second;
            ++digiIt)
        {
          if (digiIt->bx() == 0) {
             hasBX0 = true;
             break;
          }
        } 

        if (!hasBX0) continue;
 
        const RPCDetId& id = (*detUnitIt).first;
        int station = id.station();
        int layer = id.layer();
        //int region = id.region();

          if (station == 3)
            hwPlanes.insert(5);

          else if (station == 4)
            hwPlanes.insert(6);

          else if (station  == 1 && layer == 1)
            hwPlanes.insert(1);

          else if (station  == 1 && layer == 2)
            hwPlanes.insert(2);

          else if (station  == 2 && layer == 1)
            hwPlanes.insert(3);

          else if (station  == 2 && layer == 2)
            hwPlanes.insert(4);

          else
            std::cout << "??????????????" << std::endl;

    }


    for (std::set<int>::iterator it= hwPlanes.begin();
                                 it!= hwPlanes.end();
                                 ++it)
    {
        ss << " " << *it;
    }




  return ss.str();



}

// ------------ method called once each job just before starting event loop  ------------
void RPCPhiEff::beginJob(const edm::EventSetup &)
{
}

// ------------ method called once each job just after ending the event loop  ------------
void RPCPhiEff::endJob()
{
}