JGandalf.cc

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#include <string>
#include <iostream>
#include <iomanip>
#include <vector>
#include <set>
#include <algorithm>

#include "TROOT.h"
#include "TFile.h"
#include "TH2D.h"

#include "evt/Head.hh"
#include "evt/Evt.hh"
#include "JDAQ/JDAQEvent.hh"
#include "JDAQ/JDAQTimeslice.hh"
#include "JDAQ/JDAQSummaryslice.hh"

#include "JDetector/JDetector.hh"
#include "JDetector/JDetectorToolkit.hh"
#include "JDetector/JModuleRouter.hh"

#include "JLang/JPredicate.hh"

#include "JTrigger/JHit.hh"
#include "JTrigger/JFrame.hh"
#include "JTrigger/JTimeslice.hh"
#include "JTrigger/JHitL0.hh"
#include "JTrigger/JBuildL0.hh"
#include "JTrigger/JTriggerParameters.hh"

#include "JSupport/JMultipleFileScanner.hh"
#include "JSupport/JParallelFileScanner.hh"
#include "JSupport/JFileRecorder.hh"
#include "JSupport/JSupport.hh"
#include "JSupport/JMeta.hh"

#include "JFit/JHitW0.hh"
#include "JFit/JPMTW0.hh"
#include "JFit/JLine3Z.hh"
#include "JFit/JGandalf.hh"
#include "JFit/JLine3ZRegressor.hh"
#include "JFit/JFitToolkit.hh"
#include "JFit/JEvt.hh"
#include "JFit/JEvtToolkit.hh"
#include "JFit/JRegressor.hh"
#include "JFit/JFitParameters.hh"
#include "JFit/JModel.hh"

#include "JTools/JConstants.hh"
#include "JTools/JFunction1D_t.hh"
#include "JTools/JFunctionalMap_t.hh"

#include "JPhysics/JPDFTable.hh"
#include "JPhysics/JPDFToolkit.hh"

#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"


namespace {

  using namespace JPP;

  /**
   * Compare hits by PMT identifier and time.
   *
   * \param  first         first  hit
   * \param  second        second hit
   * \return               true if first before second; else false
   */
  inline bool compare(const JHitL0& first, const JHitL0& second)
  {
    if (std::equal_to<KM3NETDAQ::JDAQPMTIdentifier>()(first, second))
      return std::less<JTRIGGER::JHit>()(first, second);
    else
      return std::less<KM3NETDAQ::JDAQPMTIdentifier>()(first, second);
  }
}  


/**
 * \file
 *
 * Program to perform JFIT::JRegressor<JLine3Z,JGandalf> fit with I/O of JFIT::JEvt data.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;
  using namespace KM3NETDAQ;
  
  typedef JParallelFileScanner< JTypeList<JDAQEvent, JEvt> >       JParallelFileScanner_t;
  typedef JParallelFileScanner_t::multi_pointer_type               multi_pointer_type;
  typedef JTYPELIST<JAllTypes_t, JEvt, TH2D>::typelist             typelist;

  JParallelFileScanner_t  inputFile;
  JFileRecorder<typelist> outputFile;
  JLimit_t&      numberOfEvents = inputFile.getLimit();
  string         detectorFile;
  string         pdfFile;
  double         roadWidth_m;
  double         R_Hz;
  size_t         numberOfPrefits;
  double         TTS_ns;
  double         E_GeV;
  bool           reprocess;
  bool           calibrate;
  int            debug;

  try { 

    JParser<> zap("Program to perform PDF fit of muon trajectory to data.");
    
    zap['f'] = make_field(inputFile);
    zap['o'] = make_field(outputFile)          = "gandalf.root";
    zap['a'] = make_field(detectorFile);
    zap['n'] = make_field(numberOfEvents)      = JLimit::max();
    zap['P'] = make_field(pdfFile);
    zap['R'] = make_field(roadWidth_m)         = numeric_limits<double>::max();
    zap['B'] = make_field(R_Hz)                = 6.0e3;
    zap['N'] = make_field(numberOfPrefits)     = 0;
    zap['T'] = make_field(TTS_ns);
    zap['E'] = make_field(E_GeV)               = 1.0e3;
    zap['r'] = make_field(reprocess);
    zap['c'] = make_field(calibrate, "Enable time calibration per optical module.");
    zap['d'] = make_field(debug)               = 1;
    
    zap(argc, argv);
  }
  catch(const exception& error) {
    FATAL(error.what() << endl);
  }



  cout.tie(&cerr);


  JDetector detector;

  try {
    load(detectorFile, detector);
  }
  catch(const JException& error) {
    FATAL(error);
  }

  const JModuleRouter moduleRouter(detector);


  typedef vector<JHitL0>  JDataL0_t;
  typedef vector<JHitW0>  JDataW0_t;
  const JBuildL0<JHitL0>  buildL0;


  typedef JRegressor<JLine3Z, JGandalf>  JRegressor_t;

  JRegressor_t::debug              = debug;
  JRegressor_t::T_ns.setRange(-50.0, +450.0);   // ns
  JRegressor_t::Vmax_npe           =   10.0;    // npe
  JRegressor_t::MAXIMUM_ITERATIONS = 1000;

  JRegressor_t fit(pdfFile, TTS_ns);

  fit.parameters.resize(5);

  fit.parameters[0] = JLine3Z::pX();
  fit.parameters[1] = JLine3Z::pY();
  fit.parameters[2] = JLine3Z::pT();
  fit.parameters[3] = JLine3Z::pDX();
  fit.parameters[4] = JLine3Z::pDY();

  if (fit.getRmax() < roadWidth_m) {
    roadWidth_m = fit.getRmax();
  }

  TH2D h2("h2", NULL, detector.size(), -0.5, detector.size() - 0.5, 1001, -250.0, +250.0);

  h2.Sumw2();

  outputFile.open();

  outputFile.put(JMeta(argc, argv));

  while (inputFile.hasNext()) {

    STATUS("event: " << setw(10) << inputFile.getCounter() << '\r'); DEBUG(endl);

    multi_pointer_type ps = inputFile.next();

    JDAQEvent* tev = ps;
    JEvt*      evt = ps;
    JEvt       out;

    JEvt::iterator __end = evt->end();

    if (reprocess) {
      __end = partition(evt->begin(), __end, JHistory::is_not_event(JMUONGANDALF));
    }
    
    if (evt->begin() != __end) {

      copy(evt->begin(), __end, back_inserter(out));
    
      if (numberOfPrefits > 0) {
        advance(__end = evt->begin(), min(numberOfPrefits, out.size()));
      }

      partial_sort(evt->begin(), __end, evt->end(), qualitySorter);
      
      __end = partition(evt->begin(), __end, JHistory::is_event(evt->begin()->getHistory()));


      JDataL0_t dataL0;
      
      buildL0(*tev, moduleRouter, true, back_inserter(dataL0));
      

      if (dataL0.size() >= fit.parameters.size()) {

        for (JEvt::const_iterator track = evt->begin(); track != __end; ++track) {

          const JRotation3D     R (getDirection(*track));
          const JLine1Z         tz(getPosition (*track).rotate(R), track->getT());
          const JModel<JLine1Z> match(tz, roadWidth_m, JRegressor_t::T_ns);

          // hit selection based on start value

          JDataW0_t data;
          
          for (JDataL0_t::const_iterator i = dataL0.begin(); i != dataL0.end(); ++i) {
            
            JHitW0 hit(*i, R_Hz);
            
            hit.rotate(R);

            if (match(hit)) {
              data.push_back(hit);
            }
          }
          
          // select first hit
          
          sort(data.begin(), data.end(), compare);
          
          JDataW0_t::iterator __end = unique(data.begin(), data.end(), equal_to<JDAQPMTIdentifier>());
          

          const int NDF = distance(data.begin(), __end) - fit.parameters.size();

          if (NDF >= 0) {

            // set fit parameters

            if (track->getE() > 0.1)
              fit.E_GeV   = track->getE();
            else
              fit.E_GeV   = E_GeV;

            const double chi2 = fit(JLine3Z(tz), data.begin(), __end);
            
            JTrack3D tb(fit.value);
            
            tb.rotate_back(R);

            out.push_back(getFit(JHistory(track->getHistory()).add(JMUONGANDALF), tb, getQuality(chi2), NDF));

            // set additional values

            out.rbegin()->setW(JGANDALF_BETA0_RAD,            sqrt(fit.error.getDX() * fit.error.getDX()  +
                                                                   fit.error.getDY() * fit.error.getDY()));
            out.rbegin()->setW(JGANDALF_BETA1_RAD,            sqrt(fit.error.getDX() * fit.error.getDY()));
            out.rbegin()->setW(JGANDALF_CHI2,                 chi2);
            out.rbegin()->setW(JGANDALF_NUMBER_OF_HITS,       distance(data.begin(), __end));
            out.rbegin()->setW(JGANDALF_LAMBDA,               fit.lambda);
            out.rbegin()->setW(JGANDALF_NUMBER_OF_ITERATIONS, fit.numberOfIterations);


            if (calibrate) {

              set<int> buffer;

              for (JDataW0_t::const_iterator hit = data.begin(); hit != __end; ++hit) {
                buffer.insert(hit->getModuleID());
              }

              const JLine3Z ta = fit.value;

              for (set<int>::const_iterator id = buffer.begin(); id != buffer.end(); ++id) {

                JDataW0_t::iterator q = partition(data.begin(), __end, make_predicate(&JHitW0::getModuleID, *id, JComparison::ne()));

                if (distance(data.begin(), q) - fit.parameters.size() > 0) {

                  fit(ta, data.begin(), q);

                  sort(q, __end, compare);      // select first hit in module

                  h2.Fill(moduleRouter.getIndex(*id), q->getT() - fit.value.getT(q->getPosition()));
                }
              }
            }
          }
        }
      }

      // apply default sorter

      sort(out.begin(), out.end(), qualitySorter);
    }

    outputFile.put(out);
  }
  STATUS(endl);

  if (calibrate) {
    outputFile.put(h2);
  }

  JSingleFileScanner<JRemove<typelist, JEvt>::typelist> io(inputFile);

  io >> outputFile;

  outputFile.close();
}