FPGATrackSimMapMakerAlg.cxx

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#include "FPGATrackSimMapMakerAlg.h"
#include "FPGATrackSimMaps/FPGATrackSimModuleRelabel.h"
 
#include "TH2.h"
#include "TFile.h"
 
#include "GaudiKernel/IEventProcessor.h"
 

// Initialize
 
FPGATrackSimMapMakerAlg::FPGATrackSimMapMakerAlg (const std::string& name, ISvcLocator* pSvcLocator) :
    AthAlgorithm(name, pSvcLocator)
{
}
 
 
StatusCode FPGATrackSimMapMakerAlg::initialize()
{
 
    m_monitorFile.reset (new TFile((m_outFileName.value() + "region" + std::to_string(m_region) + ".root").c_str(), "RECREATE"));
    std::stringstream ss(m_description);
    std::string line;
    ATH_MSG_INFO("Tag config:");
    if (m_description.value() != "")
      while (std::getline(ss, line, '\n'))
    ATH_MSG_INFO('\t' << line);
 
    // reset Hit and Module vectors
    m_pbHits.clear(); m_peHits.clear(); m_sbHits.clear(); m_seHits.clear(); m_allHits.clear();
    m_track2modules.clear(); m_track2slice.clear(); m_slice2modules.clear();
    m_key_etamods.clear(); m_key_etamods2.clear(); m_usedTracks.clear();
    m_radii.clear(); m_keylayer.clear(); m_keylayer2.clear();
    m_modules.clear();
 
    // Set up the module relabel tool.
    m_moduleRelabel = new FPGATrackSimModuleRelabel(m_geoTag.value(), m_remapModules);
 
    // We need to select this before calling parseKeyString() in case the user
    // has specified a plane (logical layer) as the keystring.
    // If running with the new regions. Don't use the hardcoded layer assignments. Use either a generic one
    // or one passed in via a flag.
    ATH_MSG_INFO("Using Python configuration for regions. All pixel layers -> first stage, all strip layers -> second stage");
    m_planes = &(m_overridePlanes.value());
    m_planes2 = &(m_overridePlanes2.value());
 
    parseKeyString();
    ATH_CHECK(m_evtSel.retrieve());
 
    ATH_CHECK(m_hitSGInputTool.retrieve(EnableTool{!m_hitSGInputTool.empty()}));
    ATH_CHECK(m_hitInputTool.retrieve(EnableTool{!m_hitInputTool.empty()}));
    
    ATH_MSG_DEBUG("initialize() Instantiating root objects");
    ATH_MSG_DEBUG("initialize() Finished");
 
 
    return StatusCode::SUCCESS;
}

//                          MAIN EXECUTE ROUTINE                             //
 
StatusCode FPGATrackSimMapMakerAlg::execute(const EventContext& /*ctx*/)
{
    // Read inputs
    bool done = false;
    ATH_CHECK(readInputs(done));
 
    if (done) {
      SmartIF<IEventProcessor> appMgr{service("ApplicationMgr")};
      if (!appMgr) {
          ATH_MSG_ERROR("Failed to retrieve ApplicationMgr as IEventProcessor");
          return StatusCode::FAILURE;
      }
      return appMgr->stopRun();
    }
 
    // Reset data pointers
    m_eventHeader.reset();
 
    return StatusCode::SUCCESS;
}
 

//                       INPUT READING AND PROCESSING                        //
 
 
StatusCode FPGATrackSimMapMakerAlg::readInputs(bool & done)
{
    // Read primary input
    if ( !m_hitSGInputTool.empty()) {
      ATH_CHECK(m_hitSGInputTool->readData(&m_eventHeader, Gaudi::Hive::currentContext()));
      ATH_MSG_DEBUG("Loaded " << m_eventHeader.nHits() << " hits in event header from SG");
    }
    else  {
      ATH_CHECK(m_hitInputTool->readData(&m_eventHeader, done));
      if (done)
    {
      ATH_MSG_INFO("Cannot read more events from file, returning");
      return StatusCode::SUCCESS; // end of loop over events
    }
    }
 
    // Ask the event selection service if this event really falls within the region.
    if (!m_evtSel->selectEvent(&m_eventHeader))
    {
        ATH_MSG_DEBUG("Event skipped by: " << m_evtSel->name());
        return StatusCode::SUCCESS;
    }
 
    FPGATrackSimEventInfo eventinfo = m_eventHeader.event();
    ATH_MSG_DEBUG ("Getting Event " << eventinfo);
 
    for (auto hit: m_eventHeader.hits()) // fill track to modules map and hit vectors
    {
        // barcode cut: these hits are not associated with our single muon tracks
        if (hit.getBarcodePt() == 0) continue;
 
        SiliconTech det = hit.getDetType();
        DetectorZone bec = hit.getDetectorZone();
        int lyr = hit.getPhysLayer(); 
        int eta = hit.getEtaModule();
        int phi = hit.getPhiModule();
 
        if (hit.isPixel() && hit.isBarrel()) {
            m_pbHits.push_back(hit);
            if (lyr > m_pbmax) m_pbmax = lyr;
        }
        else if (hit.isPixel() && !hit.isBarrel()) {
            // Perform the layer + module number remapping using our tool.
            m_moduleRelabel->remap(hit);
            eta = hit.getEtaModule();
            lyr = hit.getPhysLayer();
 
            m_peHits.push_back(hit);
            if (bec == DetectorZone::posEndcap && lyr > m_pemax[0]) m_pemax[0] = lyr;
            if (bec == DetectorZone::negEndcap && lyr > m_pemax[1]) m_pemax[1] = lyr;
        }
        else if (!hit.isPixel() && hit.isBarrel()) {
            m_sbHits.push_back(hit);
            if (lyr > m_sbmax) m_sbmax = lyr;
        }
        else if (!hit.isPixel() && !hit.isBarrel()) {
            m_seHits.push_back(hit);
            if (bec == DetectorZone::posEndcap && lyr > m_semax[0]) m_semax[0] = lyr;
            if (bec == DetectorZone::negEndcap && lyr > m_semax[1]) m_semax[1] = lyr;
        }
        else ATH_MSG_ERROR("Invalid Region");
 
         // keep track of all etamods on the key layer for slicing
        if (isOnKeyLayer(1,det,bec,lyr)) {
            m_key_etamods[eta] += 1;
        }
 
        if (m_key2) // if doing 2D slicing
            if (isOnKeyLayer(2,det,bec,lyr)) m_key_etamods2.insert(eta);
 
        // Keep a global record of all modules as we see them, indexed by the ID tuple.
        Module mod = Module(det, bec, lyr, eta, phi);
        auto [it, inserted] = m_modules.try_emplace(mod.moduleId(), mod);
        Module* modref = &(it->second);
 
        if (std::find(m_track2modules[hit.getEventIndex()].begin(), m_track2modules[hit.getEventIndex()].end(), modref) == m_track2modules[hit.getEventIndex()].end())
            m_track2modules[hit.getEventIndex()].push_back(modref);
        m_allHits.push_back(hit);
    }
 
    return StatusCode::SUCCESS;
}
 
 
 

//                     OUTPUT WRITING AND MONITORING                         //
StatusCode FPGATrackSimMapMakerAlg::writePmapAndRmap(std::vector<FPGATrackSimHit> const & pbHits, std::vector<FPGATrackSimHit> const & peHits, std::vector<FPGATrackSimHit> const & sbHits, std::vector<FPGATrackSimHit> const & seHits, int reg)
{
    // Plane Map
 
    // to avoid vector _M_range_check errors, print at least one line for each DetectorZone
    if (m_pbmax == -1) m_pbmax = 0;
    if (m_sbmax == -1) m_sbmax = 0;
    if (m_pemax[0] == -1) m_pemax[0] = 0;
    if (m_pemax[1] == -1) m_pemax[1] = 0;
    if (m_semax[0] == -1) m_semax[0] = 0;
    if (m_semax[1] == -1) m_semax[1] = 0;
 
    std::string pmap_path = m_outFileName.value() + "region" + std::to_string(m_region) + ".pmap";
    ATH_MSG_INFO("Creating pmap: " << pmap_path);
    std::ostringstream buffer;
 
    buffer << m_geoTag.value() << "\n" << m_planes->size() << " logical_s1\n" << m_planes2->size() << " logical_s2\n";
    buffer << m_pbmax+1 << " pixel barrel \n" << m_pemax[0]+1 << " pixel endcap+ \n" << m_pemax[1]+1 << " pixel endcap- \n";
    buffer << m_sbmax+1 << " SCT barrel \n" << m_semax[0]+1 << " SCT endcap+\n" << m_semax[1]+1 << " SCT endcap-\n";
    buffer << "! silicon endCap physDisk physLayer ['stereo' stripSide <strip only>] 'plane1' logiLayer1 'plane2' logiLayer2\n";
    buffer << "\nregion " << reg << "\n";
 
    int p1,p2;
    for (int lyr = 0; lyr <= m_pbmax; lyr++) { // Pixel Barrel
        p1 = findPlane(m_planes, "pb" + std::to_string(lyr));
        p2 = findPlane(m_planes2, "pb" + std::to_string(lyr));
        buffer << "pixel 0    -1    " << lyr << " plane1 " << p1 << "    plane2 " << p2 << "\n";
    }
    for (int lyr = 0; lyr <= m_pemax[0]; lyr++) { // Pixel Postive Endap
        p1 = findPlane(m_planes, "pe" + std::to_string(lyr) + "+");
        p2 = findPlane(m_planes2, "pe" + std::to_string(lyr) + "+");
        buffer << "pixel 1    " << lyr << "    " << lyr << " plane1 " << p1 << "    plane2 " << p2 << "\n";
    }
    for (int lyr = 0; lyr <= m_pemax[1]; lyr++) { // Pixel Negative Endcap
        p1 = findPlane(m_planes, "pe" + std::to_string(lyr) + "-");
        p2 = findPlane(m_planes2, "pe" + std::to_string(lyr) + "-");
        buffer << "pixel 2    " << lyr << "    " << lyr << " plane1 " << p1 << "    plane2 " << p2 << "\n";
    }
    for (int lyr = 0; lyr <= m_sbmax; lyr++) { // Strip Barrel
        p1 = findPlane(m_planes, "sb" + std::to_string(lyr));
        p2 = findPlane(m_planes2, "sb" + std::to_string(lyr));
        buffer << "SCT 0    -1    " << lyr << " stereo " <<  lyr % 2 << " plane1 "  << p1 << "    plane2 " << p2 << "\n";
    }
    for (int lyr = 0; lyr <= m_semax[0]; lyr++) { // Strip Positive Endcap
        p1 = findPlane(m_planes, "se" + std::to_string(lyr) + "+");
        p2 = findPlane(m_planes2, "se" + std::to_string(lyr) + "+");
        buffer << "SCT 1    "  << lyr/2 << "    " << lyr << " stereo " <<  lyr % 2 << " plane1 " << p1 << "    plane2 " << p2 << "\n";
    }
    for (int lyr = 0; lyr <= m_semax[1]; lyr++) { // Strip Negative Endcap
        p1 = findPlane(m_planes, "se" + std::to_string(lyr) + "-");
        p2 = findPlane(m_planes2, "se" + std::to_string(lyr) + "-");
        buffer << "SCT 2    "  << lyr/2 << "    " << lyr << " stereo " <<  lyr % 2 << " plane1 " << p1 << "    plane2 " << p2 << "\n";
    }
 
    // Region Map
    std::string rmap_path = m_outFileName.value() + "region" + std::to_string(m_region) + ".rmap";
    ATH_MSG_INFO("Creating rmap: " << rmap_path);
    std::ofstream rmap(rmap_path, std::ofstream::out);
    rmap << "towers 1 phi 16\n\n0\n";
 
    rmap << makeRmapLines(pbHits, SiliconTech::pixel, DetectorZone::barrel, m_pbmax);
    rmap << makeRmapLines(peHits, SiliconTech::pixel, DetectorZone::posEndcap, m_pemax[0]);
    rmap << makeRmapLines(peHits, SiliconTech::pixel, DetectorZone::negEndcap, m_pemax[1]);
 
    rmap << makeRmapLines(sbHits, SiliconTech::strip, DetectorZone::barrel, m_sbmax);
    rmap << makeRmapLines(seHits, SiliconTech::strip, DetectorZone::posEndcap, m_semax[0]);
    rmap << makeRmapLines(seHits, SiliconTech::strip, DetectorZone::negEndcap, m_semax[1]);
 
    rmap.close();
 
 
// Now write out to disk directly without reopening
    std::ofstream outputFile(pmap_path);
    if (!outputFile) {
        ATH_MSG_ERROR("Error: Unable to open file for writing: " << pmap_path);
        return StatusCode::FAILURE;
    }
 
    std::string fileContent = buffer.str();
    for (int i = 0; i < m_nSlices; ++i) {
        outputFile << fileContent << '\n';
    }
    outputFile.close();
    return StatusCode::SUCCESS;
}
 
StatusCode FPGATrackSimMapMakerAlg::writeSubrmap(std::vector<FPGATrackSimHit> const & allHits)
{
    /*   ----------  Create z-slices ---------- */
 
    // BEFORE DOING ANYTHING ELSE, apply global trimming to m_key_etamods.
    std::set<int> key_etamods;
    // First, sum up the total number of hits in the key layer. There should be a one-liner for this...
    float total_hits = 0;
    for (auto const &etamod : m_key_etamods) {
        total_hits += etamod.second;
    }
    ATH_MSG_INFO("Found " << total_hits << " hits in the key layer, applying global trim factor of " << m_globalTrim << "%");
    if (total_hits == 0)[[unlikely]]{
      ATH_MSG_ERROR("FPGATrackSimMapMakerAlg::writeSubrmap: Failure due to zero total hits.");
      return StatusCode::FAILURE;
    }
    // Then, do the trim.
    for (auto const &etamod : m_key_etamods) {
        if (m_globalTrim == 0 || ((etamod.second / total_hits) >= m_globalTrim*0.01)) {
            key_etamods.insert(etamod.first);
        } else {
            ATH_MSG_INFO("Eta module " << etamod.first << " only contains " << etamod.second << " out of " << total_hits << " hits, excluding from slices.");
        }
    }
 
    if (m_nSlices.value() == -1) m_nSlices.value() = key_etamods.size(); //default is full granularity slicing
    float etasPerSlice = float(key_etamods.size())/m_nSlices.value();
    std::vector<std::vector<int>> key_modules_for_slices; // indexed by slice, holds module eta values
 
   // easier to use vector than set, convert m_key_etamods into key_etas
    std::vector<int> key_etas;
    std::vector<int> key_etas2; // used if 2D slicing
    key_etas.insert(key_etas.end(), key_etamods.begin(), key_etamods.end());
 
    for (unsigned i = 0; i < key_etas.size(); i++)
    {
        if (i >= (key_modules_for_slices.size() * etasPerSlice)) key_modules_for_slices.push_back(std::vector<int>());
        key_modules_for_slices.back().push_back(key_etas[i]);
    }
 
    std::map<int, int> keymod2slice;
    for (unsigned s = 0; s < key_modules_for_slices.size(); s++)
        for (unsigned e = 0; e < key_modules_for_slices[s].size(); e++)
            keymod2slice[key_modules_for_slices[s][e]] = s;
 
    std::string key = m_keystring.value();
    key.erase(std::remove(key.begin(), key.end(), ','), key.end());
    key.erase(std::remove(key.begin(), key.end(), ' '), key.end());
    std::string key2 = m_keystring2.value();
    key2.erase(std::remove(key2.begin(), key2.end(), ','), key2.end());
    key2.erase(std::remove(key2.begin(), key2.end(), ' '), key2.end());
 
    ATH_MSG_INFO("Doing z-slicing");
    if (key_etamods.size() == 0) ATH_MSG_ERROR("Found 0 slices using the keystring: '" << m_keystring << "'");
    ATH_MSG_INFO("Nslices = " << std::to_string(m_nSlices.value()) << ":");
 
    std::stringstream eta_slices;
    for (unsigned s = 0; s < key_modules_for_slices.size(); s++){
        for (unsigned e = 0; e < key_modules_for_slices[s].size(); e++){
            eta_slices << key_modules_for_slices[s][e] << " ";
        }
        eta_slices << ", ";
    }
    ATH_MSG_INFO(eta_slices.str());
 
    // 2D key layer slicing
    if (m_key2)
    { // make new slices from combinations of keylayer1 slices and keylayer2 slices
 
        /*------------- setup keylayer2 keymodule to slice map  -------------- */
        std::vector<std::vector<int>> key_modules_for_slices2;
        float etasPerSlice2 = float(m_key_etamods2.size())/m_nSlices.value();
        key_etas2.insert(key_etas2.end(), m_key_etamods2.begin(), m_key_etamods2.end());
        for (unsigned i = 0; i < key_etas2.size(); i++)
        {
        if (i >= (key_modules_for_slices2.size() * etasPerSlice2)) key_modules_for_slices2.push_back(std::vector<int>());
        key_modules_for_slices2.back().push_back(key_etas2[i]);
        }
 
        std::map<int, int> keymod2slice2;
        for (unsigned s = 0; s < key_modules_for_slices2.size(); s++)
            for (unsigned e = 0; e < key_modules_for_slices2[s].size(); e++)
                keymod2slice2[key_modules_for_slices2[s][e]] = s;
        /*----------------------------------------------------------------- */
 
        int new_nSlice = m_nSlices.value();
        for (int s1 = 0; s1 < m_nSlices.value(); s1++){ // loop over keylayer1's slices
      for (int s2 = 0; s2 < m_nSlices.value(); s2++){ // loop over keylayer2's slices
 
                for (auto& pair: m_track2modules) // track loop
                {
                    if (m_usedTracks.find(pair.first) != m_usedTracks.end()) continue; // skip if already assigned a slice to this track
                    bool key1 = false;
                    bool key2 = false;
                    for (auto& m: pair.second) // module loop
                    {
                        if (isOnKeyLayer(1,m->det,m->bec,m->lyr))
                            if (keymod2slice[m->eta] == s1) key1 = true;
 
                        if (isOnKeyLayer(2,m->det,m->bec,m->lyr))
                            if (keymod2slice2[m->eta] == s2) key2 = true;
                    }
 
                    if (key1 && key2)
                    {
              int newSlice = m_nSlices.value()*s1 + s2;
                        m_track2slice[pair.first] = newSlice;
                        m_usedTracks.insert(pair.first);
                        if (newSlice + 1 > new_nSlice) new_nSlice = newSlice + 1; // find max slice, to set new total number of slices
                    }
                }
            }
        }
        m_nSlices.value() = new_nSlice;
        ATH_MSG_INFO("These slices were further divided based on the key layer 2: '" << key2 << "'. Now nSlices = " << m_nSlices.value());
        ATH_MSG_INFO("Using " << m_usedTracks.size() << " tracks out of " << m_maxEvents << ". The rest were missing a hit in one or both of the key layers");
    }
 
 
    // 1D key layer slicing
    else
    {
        for (const FPGATrackSimHit& hit: allHits) // Fill the track to slice map
        {
            if (m_usedTracks.find(hit.getEventIndex()) != m_usedTracks.end()) continue; // skip if already done a hit from this track
            if (isOnKeyLayer(1,hit.getDetType(),hit.getDetectorZone(), hit.getPhysLayer()))
            { // if hit is in key layer, add it's barcode to the map
                if (keymod2slice.count(hit.getEtaModule()) > 0) {
                    int s = keymod2slice[hit.getEtaModule()];
                    m_track2slice[hit.getEventIndex()] = s;
                    m_usedTracks.insert(hit.getEventIndex());
                }
            }
        }
        ATH_MSG_INFO("Using " << m_usedTracks.size() << " tracks out of " << m_maxEvents << ". The rest missed the key layer");
    }
 
    std::string subrmap_path = m_outFileName.value() + "region" + std::to_string(m_region) + ".subrmap";
 
    ATH_MSG_INFO("Creating subrmap: " << subrmap_path);
    std::ofstream subrmap(subrmap_path, std::ofstream::out);
    subrmap << "towers " << m_nSlices.value() << " phi 16\n\n";
 
    // Resize numTracks vector to be equal to the number of slices
    // Now that this just stores module pointers we could loop over m_modules instead.
    for (auto& pair: m_track2modules) {
        for (Module* m: pair.second) {
      if (m->numTracks.empty()) {
        m->numTracks.resize(m_nSlices.value(), 0);
      }
        }
    }
 
 
    // Count tracks per slice
    ATH_MSG_INFO("Counting number of tracks per slice.");
    std::vector<std::vector<int>> slicedTracks (m_nSlices.value()); // vector of tracks, indexed by slice
    for (auto trk: m_usedTracks) {
        int s = m_track2slice[trk];
        slicedTracks[s].push_back(trk);
        std::vector<Module*> mods = m_track2modules[trk];
        for (Module* mod: mods) {
            mod->numTracks[s]++;
        }
    }
 
    if (m_drawSlices)
      drawSlices(allHits);
 
    // Now do trimming and Fill slice2module map
    int trimmed = 0;
    for (int s = 0; s < m_nSlices.value(); s++) {
        ATH_MSG_INFO("Applying local trimming in slice " << s);
        for (auto trk : slicedTracks[s]) {
            auto it = std::remove_if (m_track2modules[trk].begin(),
                                      m_track2modules[trk].end(),
                                      [&] (const Module* m) {
                                        return 100 * ( float(m->numTracks[s]) / float(slicedTracks[s].size()) ) < m_trim;
                                      });
            trimmed += m_track2modules[trk].end() - it;
            m_track2modules[trk].erase (it, m_track2modules[trk].end());
 
            ATH_MSG_DEBUG("About to query trk2slice");
            int s = m_track2slice[trk];
            ATH_MSG_DEBUG("Queried trk2slice.");
            // add all modules from track to slices
            if (m_track2modules[trk].size() > 0) {
                ATH_MSG_DEBUG("About to insert trk2modules");
                m_slice2modules[s].insert( m_slice2modules[s].end(), m_track2modules[trk].begin(), m_track2modules[trk].end() );
                ATH_MSG_DEBUG("Inserted trk2modules.");
            }
        }
    }
    ATH_MSG_INFO("Trimmed off " << trimmed << " modules that were hit by less than " << m_trim << "% of tracks");
 
    /*   ----------  Print z-slice map ---------- */
 
    for (int s = 0; s < m_nSlices.value(); s++)
    {
        subrmap << s << "\n";
        subrmap << makeSubrmapLines(m_slice2modules[s], SiliconTech::pixel, DetectorZone::barrel, m_pbmax);
        subrmap << makeSubrmapLines(m_slice2modules[s], SiliconTech::pixel, DetectorZone::posEndcap, m_pemax[0]);
        subrmap << makeSubrmapLines(m_slice2modules[s], SiliconTech::pixel, DetectorZone::negEndcap, m_pemax[1]);
 
        subrmap << makeSubrmapLines(m_slice2modules[s], SiliconTech::strip, DetectorZone::barrel, m_sbmax);
        subrmap << makeSubrmapLines(m_slice2modules[s], SiliconTech::strip, DetectorZone::posEndcap, m_semax[0]);
        subrmap << makeSubrmapLines(m_slice2modules[s], SiliconTech::strip, DetectorZone::negEndcap, m_semax[1]);
        subrmap << "\n\n";
    }
 
    subrmap.close();
    return StatusCode::SUCCESS;
}
 
StatusCode FPGATrackSimMapMakerAlg::writeEtaPatterns()
{
    std::string slicingType = "";
    if (m_key2) slicingType = "2D";
 
    std::string etapat_path = m_outFileName.value() + "region" + std::to_string(m_region) + ".patt";
 
    ATH_MSG_INFO("Creating eta patterns file: " << etapat_path);
    std::ofstream etapat(etapat_path, std::ofstream::out);
 
    // assign logical layer to each module
    for (auto& pair: m_track2modules) {
        for (auto& m: pair.second)
        {
            if (m->det == SiliconTech::pixel && m->bec == DetectorZone::barrel) m->plane = findPlane(m_planes, "pb" + std::to_string(m->lyr));
            if (m->det == SiliconTech::pixel && m->bec == DetectorZone::posEndcap) m->plane = findPlane(m_planes, "pe" + std::to_string(m->lyr) + "+");
            if (m->det == SiliconTech::pixel && m->bec == DetectorZone::negEndcap) m->plane = findPlane(m_planes, "pe" + std::to_string(m->lyr) + "-");
 
            if (m->det == SiliconTech::strip && m->bec == DetectorZone::barrel) m->plane = findPlane(m_planes, "sb" + std::to_string(m->lyr));
            if (m->det == SiliconTech::strip && m->bec == DetectorZone::posEndcap) m->plane = findPlane(m_planes, "se" + std::to_string(m->lyr) + "+");
            if (m->det == SiliconTech::strip && m->bec == DetectorZone::negEndcap) m->plane = findPlane(m_planes, "se" + std::to_string(m->lyr) + "-");
        }
    }
 
    for(auto trk: m_usedTracks)
    {
        std::stringstream track_etapatts;
        unsigned planesDone = 0;
        for (unsigned p = 0; p < (m_planes)->size(); p++)
        {
            for (const Module* m : m_track2modules[trk]) {
                if (m->plane == static_cast<int>(p))
                {
                    track_etapatts << std::to_string(static_cast<int>(m->det)) << "\t" << std::to_string(static_cast<int>(m->bec)) << "\t" << std::to_string(m->eta) << "\t\t";
                    planesDone++;
                    break;
                }
            }
        }
        if (planesDone == (m_planes)->size())
            etapat << track_etapatts.str() << "\n";
 
    }
    etapat.close();
    return StatusCode::SUCCESS;
}
 
StatusCode FPGATrackSimMapMakerAlg::writeRadiiFile(std::vector<FPGATrackSimHit> const & allHits)
{
    // calculate mean radii.
  m_radii.resize(m_nSlices.value(), std::vector<std::vector<float>>(m_planes2->size(),std::vector<float>(0)));
    for (const auto& hit: allHits)
    {
        SiliconTech det = hit.getDetType();
        DetectorZone bec = hit.getDetectorZone();
        int lyr = hit.getPhysLayer();
        int slice = m_track2slice[hit.getEventIndex()];
        int plane = -1;
        if (det == SiliconTech::pixel && bec == DetectorZone::barrel) plane = findPlane(m_planes2, "pb" + std::to_string(lyr));
        if (det == SiliconTech::pixel && bec == DetectorZone::posEndcap) plane = findPlane(m_planes2, "pe" + std::to_string(lyr) + "+");
        if (det == SiliconTech::pixel && bec == DetectorZone::negEndcap) plane = findPlane(m_planes2, "pe" + std::to_string(lyr) + "-");
        if (det == SiliconTech::strip && bec == DetectorZone::barrel) plane = findPlane(m_planes2, "sb" + std::to_string(lyr));
        if (det == SiliconTech::strip && bec == DetectorZone::posEndcap) plane = findPlane(m_planes2, "se" + std::to_string(lyr) + "+");
        if (det == SiliconTech::strip && bec == DetectorZone::negEndcap) plane = findPlane(m_planes2, "se" + std::to_string(lyr) + "-");
 
        if (plane != -1) {
            m_radii[slice][plane].push_back(hit.getR());
        }
    }
 
    // print file
    std::string radii_path = m_outFileName.value() + "region" + std::to_string(m_region) + "_radii.txt";
 
    ATH_MSG_INFO("Creating radii file: " << radii_path);
    std::ofstream radfile(radii_path, std::ofstream::out);
    for (int s = 0; s < m_nSlices.value(); s++){
        radfile << std::to_string(s) << " ";
        for (unsigned p = 0; p < (m_planes2)->size(); p++){
            if (m_radii[s][p].size() != 0){
                // "If left to type inference, op operates on values of the same type as
                // init which can result in unwanted casting of the iterator elements."
                // https://en.cppreference.com/w/cpp/algorithm/accumulate
                float avg = std::accumulate(m_radii[s][p].begin(), m_radii[s][p].end(), 0.0f) / float(m_radii[s][p].size());
                radfile << std::setprecision(3) << std::fixed << avg << " ";
            } else {
                int avg = -1;
                radfile << avg << " ";
            }
        }
        radfile << "\n";
    }
 
    // Calculate global mean radii by reversing the order of the above two loops.
    radfile << -1 << " ";
    for (unsigned p = 0; p < (m_planes2)->size(); p++) {
        float avg = 0;
        int count = 0;
        for (int s = 0; s < m_nSlices.value(); s++) {
            if (m_radii[s][p].size() != 0) {
                avg = std::accumulate(m_radii[s][p].begin(), m_radii[s][p].end(), avg);
                count += m_radii[s][p].size();
            }
        }
        if (count > 0) {
            avg /= float(count);
            radfile << std::setprecision(3) << std::fixed << avg << " ";
        } else {
            radfile << -1 << " ";
        }
    }
    radfile << '\n';
 
    radfile.close();
 
    return StatusCode::SUCCESS;
}
 
StatusCode FPGATrackSimMapMakerAlg::writeMedianZFile(std::vector<FPGATrackSimHit> const & allHits)
{
    // calculate median z. We do this globally and slice-by-slice.
  m_z.resize(m_nSlices.value(), std::vector<std::vector<float>>((m_planes2)->size(),std::vector<float>(0)));
    for (const auto& hit: allHits)
    {
        SiliconTech det = hit.getDetType();
        DetectorZone bec = hit.getDetectorZone();
        int lyr = hit.getPhysLayer();
        int slice = m_track2slice[hit.getEventIndex()];
        int plane = -1;
        if (det == SiliconTech::pixel && bec == DetectorZone::barrel) plane = findPlane(m_planes2, "pb" + std::to_string(lyr));
        if (det == SiliconTech::pixel && bec == DetectorZone::posEndcap) plane = findPlane(m_planes2, "pe" + std::to_string(lyr) + "+");
        if (det == SiliconTech::pixel && bec == DetectorZone::negEndcap) plane = findPlane(m_planes2, "pe" + std::to_string(lyr) + "-");
        if (det == SiliconTech::strip && bec == DetectorZone::barrel) plane = findPlane(m_planes2, "sb" + std::to_string(lyr));
        if (det == SiliconTech::strip && bec == DetectorZone::posEndcap) plane = findPlane(m_planes2, "se" + std::to_string(lyr) + "+");
        if (det == SiliconTech::strip && bec == DetectorZone::negEndcap) plane = findPlane(m_planes2, "se" + std::to_string(lyr) + "-");
 
        if (plane != -1) {
            m_z[slice][plane].push_back(hit.getZ());
        }
    }
 
    // print file
    std::string zed_path = m_outFileName.value() + "region" + std::to_string(m_region) + "_z.txt";
 
    ATH_MSG_INFO("Creating median z file: " << zed_path);
    std::ofstream zedfile(zed_path, std::ofstream::out);
    for (int s = 0; s < m_nSlices.value(); s++){
        zedfile << std::to_string(s) << " ";
        for (unsigned p = 0; p < (m_planes2)->size(); p++){
            if (m_z[s][p].size() != 0){
                float minZ = *std::min_element(m_z[s][p].begin(), m_z[s][p].end());
                float maxZ = *std::max_element(m_z[s][p].begin(), m_z[s][p].end());
                float median = (minZ + maxZ)/2;
                zedfile << std::setprecision(3) << std::fixed << median << " ";
            } else {
                int median = -1;
                zedfile << median << " ";
            }
        }
        zedfile << '\n';
    }
 
    // Now do this globally. Note: should this be meanZ instead of medianZ in the forward region?
    zedfile << -1 << " ";
    for (unsigned p = 0; p < (m_planes2)->size(); p++) {
        float minZ = 0;
        float maxZ = 0;
        bool doneInitial = false;
        for (int s = 0; s < m_nSlices.value(); s++) {
            if (m_z[s][p].size() != 0) {
                float newMinZ = *std::min_element(m_z[s][p].begin(), m_z[s][p].end());
                float newMaxZ = *std::max_element(m_z[s][p].begin(), m_z[s][p].end());
                // slightly clunky, but z can be positive and negative so there's not a sane initial/placeholder value.
                if (doneInitial) {
                    minZ = std::min(minZ, newMinZ);
                    maxZ = std::max(maxZ, newMaxZ);
                } else {
                    minZ = newMinZ;
                    maxZ = newMaxZ;
                    doneInitial = true;
                }
            }
        }
        if (doneInitial) {
            float median = (minZ + maxZ)/2;
            zedfile << std::setprecision(3) << std::fixed << median << " ";
        } else {
            int median = -1;
            zedfile << median << " ";
        }
    }
    zedfile << '\n';
 
    zedfile.close();
 
    return StatusCode::SUCCESS;
}

// Finalize
StatusCode FPGATrackSimMapMakerAlg::finalize()
{
    // Write the output
    ATH_CHECK(writePmapAndRmap(m_pbHits, m_peHits, m_sbHits, m_seHits, m_region));
    ATH_CHECK(writeSubrmap(m_allHits));
    ATH_CHECK(writeEtaPatterns());
    ATH_CHECK(writeRadiiFile(m_allHits));
    ATH_CHECK(writeMedianZFile(m_allHits));
    m_monitorFile.reset();
    delete m_moduleRelabel;
    m_moduleRelabel = nullptr;
    return StatusCode::SUCCESS;
}
 

// Helpers
 
void FPGATrackSimMapMakerAlg::drawSlices(std::vector<FPGATrackSimHit> const & allHits)
{
    m_monitorFile->cd();
 
    std::vector<TH2F*> h_slicemap;
    char hname[20];
 
    for (unsigned i = 0; i < (unsigned)m_nSlices.value(); i++)
    {
        sprintf(hname,"rz_slice%u",i);
        // This should just default to the entire range, I think.
        // The user can reduce the binning.
        TH2F *h = new TH2F(hname,hname,7000,-3500,3500,1200,0,1200);
        h_slicemap.push_back(h);
    }
 
    for (const auto& hit: allHits)
    {
        if (m_usedTracks.find(hit.getEventIndex()) == m_usedTracks.end()) continue; // skip if we don't use this track
        int s = m_track2slice[hit.getEventIndex()];
        h_slicemap[s]->Fill(hit.getZ(),hit.getR());
    }
 
    for (int i = 0; i < m_nSlices.value(); i++)
        h_slicemap[i]->Write();
 
}
 
bool FPGATrackSimMapMakerAlg::isOnKeyLayer(int keynum, SiliconTech t_det, DetectorZone t_bec, int lyr)
{
    int det = static_cast<int>(t_det);
    int bec = static_cast<int>(t_bec);
    if (keynum == 1)
        if (m_keylayer["det"].find(det) != m_keylayer["det"].end() && m_keylayer["bec"].find(bec) != m_keylayer["bec"].end() && m_keylayer["lyr"].find(lyr) != m_keylayer["lyr"].end())
            return true;
 
    if (keynum == 2)
        if (m_keylayer2["det"].find(det) != m_keylayer2["det"].end() && m_keylayer2["bec"].find(bec) != m_keylayer2["bec"].end() && m_keylayer2["lyr"].find(lyr) != m_keylayer2["lyr"].end())
            return true;
 
    return false;
}
 
int FPGATrackSimMapMakerAlg::findPlane(const std::vector<std::vector<std::string>>* planes, const std::string& test) // find what plane a layer is assigned to.
{
    int pcounter = 0;
    for (auto& plane : *planes) {
        for (auto& layer : plane) {
            if (test == layer) return pcounter;
        }
        pcounter ++;
    }
    return -1;
}
 
std::string FPGATrackSimMapMakerAlg::makeRmapLines(std::vector<FPGATrackSimHit> const & hits, SiliconTech det, DetectorZone bec, int max)
{
    std::stringstream rmap_line;
    std::set<int> etas, phis;
 
    for(int lyr = 0; lyr <= max; lyr++)
    {
        etas.clear();
        phis.clear();
        for (const auto& hit: hits)
        {
            if(static_cast<int>(hit.getPhysLayer()) == lyr && hit.getDetectorZone() == bec)  // cast from uint to int just to remove Wsign-compare warnings
            {
                etas.insert(hit.getEtaModule());
                phis.insert(hit.getPhiModule());
            }
        }
        if (etas.size() != 0) rmap_line << static_cast<int>(det) << " " << static_cast<int>(bec) << " " << lyr << " " << *phis.begin() << " " << *phis.rbegin() << " " << phis.size() << " " << *etas.begin() << " " << *etas.rbegin() << " " << etas.size() << "\n";
        else rmap_line << static_cast<int>(det) << " " << static_cast<int>(bec) << " " << lyr << " 0 0 0 0 0 0\n";
 
    }
 
    return rmap_line.str();
}
 
void FPGATrackSimMapMakerAlg::parseKeyString()
{
    // Parse keystring and define the Key Layer
    std::string delimiter = ",";
    std::string s = m_keystring.value();
    std::string det, bec, lyr;
    std::map <std::string, std::vector<std::string>> abrevs = { {"pb",{"pixel","barrel"}}, {"pe",{"pixel","endcap"}}, {"sb",{"strip","barrel"}}, {"se",{"strip","endcap"}} };
    if( s.find(delimiter) != std::string::npos) // keylayer format is 'strip,barrel,4'
    {
        try {
            std::string det = s.substr(0, s.find(delimiter));
            s.erase(0, s.find(delimiter) + delimiter.length());
            std::string bec = s.substr(0, s.find(delimiter));
            s.erase(0, s.find(delimiter) + delimiter.length());
            std::string lyr = s.substr(0, s.find(delimiter));
            s.erase(0, s.find(delimiter) + delimiter.length());
            m_keylayer["det"].insert(static_cast<int>(m_det2tech[det]));
            m_keylayer["bec"].insert(static_cast<int>(m_bec2zone[bec]));
            m_keylayer["lyr"].insert(std::stoi(lyr));
            ATH_MSG_INFO("Using key layer: " << m_keystring.value());
        } catch (...){
            ATH_MSG_ERROR("Invalid KeyString: '" << m_keystring.value() << "'." << "Accepted formats are 'strip,posEndcap,2', 'pixel,barrel,3', or 'plane 0'");
        }
    }
    else // keylayer format is 'plane 0'
    {
        std::string delimiter = " ";
        try {
            s.erase(0, s.find(delimiter) + delimiter.length());
            std::string plane = s.substr(0, s.find(delimiter));
            std::vector<std::string> s = (m_planes)->at(std::stoi(plane));
            for (unsigned i = 0; i < s.size(); i++){
                std::string reg = s[i].substr(0, 2);
                std::vector<std::string> zone = abrevs[reg];
                if (s[i].back() == '+') zone[1] = "posEndcap";
                if (s[i].back() == '-') zone[1] = "negEndcap";
                s[i].erase(std::remove(s[i].begin(), s[i].end(), '+'), s[i].end());
                s[i].erase(std::remove(s[i].begin(), s[i].end(), '-'), s[i].end());
                std::string lyr = s[i].substr(2);
                m_keylayer["det"].insert(static_cast<int>(m_det2tech[zone[0]]));
                m_keylayer["bec"].insert(static_cast<int>(m_bec2zone[zone[1]]));
                m_keylayer["lyr"].insert(std::stoi(lyr));
            }
            ATH_MSG_INFO("Using key layer (in plane X format) " << m_keystring.value());
        } catch (...){
            ATH_MSG_ERROR("Invalid KeyString: '" << m_keystring.value() << "'." << "Accepted formats are 'strip,posEndcap,2', 'pixel,barrel,3', or 'plane 0'");
        }
    }
 
    // if 2D slicing
    if (m_keystring2.value() != "")
    {
        m_key2 = true;
        std::string s = m_keystring2.value();
        if( s.find(delimiter) != std::string::npos) // keylayer format is 'strip,barrel,8'
        {
            try {
                std::string det = s.substr(0, s.find(delimiter));
                s.erase(0, s.find(delimiter) + delimiter.length());
                std::string bec = s.substr(0, s.find(delimiter));
                s.erase(0, s.find(delimiter) + delimiter.length());
                std::string lyr = s.substr(0, s.find(delimiter));
                s.erase(0, s.find(delimiter) + delimiter.length());
                m_keylayer2["det"].insert(static_cast<int>(m_det2tech[det]));
                m_keylayer2["bec"].insert(static_cast<int>(m_bec2zone[bec]));
                m_keylayer2["lyr"].insert(std::stoi(lyr));
                ATH_MSG_INFO("Using key layer (2D): " << m_keystring2.value());
            } catch (...){
                ATH_MSG_ERROR("Invalid KeyString2: '" << m_keystring2.value() << "'." << "Accepted formats are 'strip,posEndcap,2', 'pixel,barrel,3', or 'plane 0'");
            }
        }
        else // keylayer format is 'plane 0'
        {
            std::string delimiter = " ";
            try {
                s.erase(0, s.find(delimiter) + delimiter.length());
                std::string plane = s.substr(0, s.find(delimiter));
                std::vector<std::string> s = (m_planes)->at(std::stoi(plane));
                for (unsigned i = 0; i < s.size(); i++){
                    std::string reg = s[i].substr(0, 2);
                    std::vector<std::string> zone = abrevs[reg];
                    if (s[i].back() == '+') zone[1] = "posEndcap";
                    if (s[i].back() == '-') zone[1] = "negEndcap";
                    s[i].erase(std::remove(s[i].begin(), s[i].end(), '+'), s[i].end());
                    s[i].erase(std::remove(s[i].begin(), s[i].end(), '-'), s[i].end());
                    std::string lyr = s[i].substr(2);
                    m_keylayer2["det"].insert(static_cast<int>(m_det2tech[zone[0]]));
                    m_keylayer2["bec"].insert(static_cast<int>(m_bec2zone[zone[1]]));
                    m_keylayer2["lyr"].insert(std::stoi(lyr));
                }
                ATH_MSG_INFO("Using key layer (2D) (in plane X format): " << m_keystring2.value());
            } catch (...){
                ATH_MSG_ERROR("Invalid KeyString2: '" << m_keystring2.value() << "'." << "Accepted formats are 'strip,posEndcap,2', 'pixel,barrel,3', or 'plane 0'");
            }
        }
    }
}
 
std::string FPGATrackSimMapMakerAlg::makeSubrmapLines(std::vector<Module*> const & allmods, SiliconTech det, DetectorZone bec, int max)
{
    std::stringstream subrmap_line;
    std::set<int> etas, phis;
 
    std::vector<Module*> mods;
    for (auto* mod: allmods) // just want modules in pb/pe/sb/se etc, not all at once
        if (mod->det == det && mod->bec == bec) mods.push_back(mod);
 
    for(int lyr = 0; lyr <= max; lyr++)
    {
        etas.clear();
        phis.clear();
        for (auto mod: mods)
        {
            if(mod->lyr == lyr)
            {
                etas.insert(mod->eta);
                phis.insert(mod->phi);
            }
        }
        if (etas.size() != 0) subrmap_line << static_cast<int>(det) << " " << static_cast<int>(bec) << " " << lyr << " " << *phis.begin() << " " << *phis.rbegin() << " " << phis.size() << " " << *etas.begin() << " " << *etas.rbegin() << " " << etas.size() << "\n";
        else subrmap_line << static_cast<int>(det) << " " << static_cast<int>(bec) << " " << lyr << " 0 0 0 0 0 0\n";
 
    }
 
    return subrmap_line.str();
}