SeedFinderModule_module.cc

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//
// Name: SeedFinderModule.h
//
//
// Ben Jones, MIT, April 2012
//   bjpjones@mit.edu
//

#include "art/Framework/Core/EDProducer.h"
#include "art/Framework/Principal/Event.h"
#include "canvas/Persistency/Common/FindManyP.h"
#include "canvas/Persistency/Common/PtrVector.h"
#include "messagefacility/MessageLogger/MessageLogger.h"

#include "larcore/Geometry/Geometry.h"
#include "lardata/DetectorInfoServices/DetectorClocksService.h"
#include "lardata/DetectorInfoServices/DetectorPropertiesService.h"
#include "lardataobj/RecoBase/Cluster.h"
#include "lardataobj/RecoBase/Hit.h"
#include "lardataobj/RecoBase/Seed.h"
#include "lardataobj/RecoBase/SpacePoint.h"
#include "larreco/RecoAlg/SeedFinderAlgorithm.h"

namespace trkf {

  class SeedFinderModule : public art::EDProducer {
  public:
    explicit SeedFinderModule(fhicl::ParameterSet const& pset);

  private:
    void produce(art::Event& evt) override;

    art::PtrVector<recob::Hit> GetHitsFromEvent(std::string HitModuleLabel, art::Event& evt);
    void GetSortedHitsFromClusters(
      std::string ClusterModuleLabel,
      art::Event& evt,
      std::vector<std::vector<art::PtrVector<recob::Hit>>>& SortedHits);

    // Fcl Attributes.
    SeedFinderAlgorithm fSeedAlg;  // Algorithm object
    std::string fInputModuleLabel; // Where to find hits, if we need them
    int fInputSource;              // 1: Use Clusters
                                   // 2: Use Hits
  };

}

#include "art/Framework/Core/ModuleMacros.h"

namespace trkf {
  DEFINE_ART_MODULE(SeedFinderModule)
}

namespace trkf {

  //----------------------------------------------------------------------------
  SeedFinderModule::SeedFinderModule(const fhicl::ParameterSet& pset)
    : EDProducer{pset}, fSeedAlg(pset.get<fhicl::ParameterSet>("SeedAlg"))
  {
    fInputModuleLabel = pset.get<std::string>("InputModuleLabel");
    fInputSource = pset.get<int>("InputSource");

    produces<std::vector<recob::Seed>>();
  }

  //----------------------------------------------------------------------------
  void SeedFinderModule::produce(art::Event& evt)
  {
    auto seeds = std::make_unique<std::vector<recob::Seed>>();

    std::vector<std::vector<recob::SpacePoint>> SpacePointsWithSeeds;
    std::vector<recob::Seed> SeedVector;

    auto const clockData = art::ServiceHandle<detinfo::DetectorClocksService const>()->DataFor(evt);
    auto const detProp =
      art::ServiceHandle<detinfo::DetectorPropertiesService const>()->DataFor(evt, clockData);

    // Make seeds from clusters
    if (fInputSource == 1) {
      std::vector<std::vector<art::PtrVector<recob::Hit>>> HitsPerSeed;

      std::vector<std::vector<art::PtrVector<recob::Hit>>> SortedHits;
      GetSortedHitsFromClusters(fInputModuleLabel, evt, SortedHits);

      std::vector<std::vector<recob::Seed>> Seeds =
        fSeedAlg.GetSeedsFromSortedHits(clockData, detProp, SortedHits, HitsPerSeed);

      for (size_t i = 0; i != Seeds.size(); ++i)
        for (size_t j = 0; j != Seeds.at(i).size(); ++j)
          SeedVector.push_back(Seeds.at(i).at(j));
    }

    // Make seeds from unsorted hits
    else if (fInputSource == 0) {

      art::PtrVector<recob::Hit> Hits = GetHitsFromEvent(fInputModuleLabel, evt);
      std::vector<art::PtrVector<recob::Hit>> HitCatalogue;
      SeedVector = fSeedAlg.GetSeedsFromUnSortedHits(clockData, detProp, Hits, HitCatalogue);
    }
    else {
      throw cet::exception("SeedFinderModule") << "Unkown source mode " << fInputSource << "\n";
    }

    if (SeedVector.size() > 0) {
      for (size_t i = 0; i != SeedVector.size(); ++i) {
        seeds->push_back(SeedVector.at(i));
      }
    }
    else
      mf::LogInfo("SeedFinder") << "Seed finder made no seeds : no space points in event"
                                << std::endl;

    evt.put(std::move(seeds));
  }

  //----------------------------------------------------------------------------
  // Get the hits associated with stored clusters
  //

  void SeedFinderModule::GetSortedHitsFromClusters(
    std::string ClusterModuleLabel,
    art::Event& evt,
    std::vector<std::vector<art::PtrVector<recob::Hit>>>& SortedHits)
  {

    SortedHits.clear();
    SortedHits.resize(3);
    std::vector<art::Ptr<recob::Cluster>> Clusters;

    art::Handle<std::vector<recob::Cluster>> clusterh;
    evt.getByLabel(ClusterModuleLabel, clusterh);

    if (clusterh.isValid()) { art::fill_ptr_vector(Clusters, clusterh); }

    art::FindManyP<recob::Hit> fm(clusterh, evt, ClusterModuleLabel);

    for (size_t iclus = 0; iclus < Clusters.size(); ++iclus) {
      art::Ptr<recob::Cluster> ThisCluster = Clusters.at(iclus);

      std::vector<art::Ptr<recob::Hit>> ihits = fm.at(iclus);

      art::PtrVector<recob::Hit> HitsThisCluster;
      for (std::vector<art::Ptr<recob::Hit>>::const_iterator i = ihits.begin(); i != ihits.end();
           ++i)
        HitsThisCluster.push_back(*i);

      SortedHits[ThisCluster->View()].push_back(HitsThisCluster);
    }
  }

  //----------------------------------------------------------------------------
  // Extract vector of hits from event
  //
  art::PtrVector<recob::Hit> SeedFinderModule::GetHitsFromEvent(std::string HitModuleLabel,
                                                                art::Event& evt)
  {

    art::PtrVector<recob::Hit> TheHits;
    art::Handle<std::vector<recob::Hit>> hith;
    evt.getByLabel(HitModuleLabel, hith);
    for (unsigned int i = 0; i < hith->size(); ++i) {
      art::Ptr<recob::Hit> hit(hith, i);
      TheHits.push_back(hit);
    }

    return TheHits;
  }
}