AggregateVertex_module.cc

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////////////////////////////////////////////////////////////////////////
//
// AggregateVertex module
//
// brebel@fnal.gov
//
////////////////////////////////////////////////////////////////////////

extern "C" {
#include <sys/types.h>
#include <sys/stat.h>
}

// Framework includes
#include "art/Framework/Core/ModuleMacros.h"
#include "art/Framework/Core/EDProducer.h"
#include "canvas/Persistency/Common/FindManyP.h"
#include "art/Framework/Principal/Event.h" 
#include "fhiclcpp/ParameterSet.h" 
#include "art/Framework/Principal/Handle.h" 
#include "canvas/Persistency/Common/Ptr.h" 
#include "canvas/Persistency/Common/PtrVector.h" 
#include "art/Framework/Services/Registry/ServiceHandle.h" 
#include "art_root_io/TFileService.h"
#include "art_root_io/TFileDirectory.h"
#include "canvas/Persistency/Common/FindManyP.h"
#include "messagefacility/MessageLogger/MessageLogger.h"

#include "lardataobj/RecoBase/Cluster.h"
#include "lardataobj/RecoBase/EndPoint2D.h"
#include "lardataobj/RecoBase/Track.h"
#include "lardataobj/RecoBase/Shower.h"
#include "lardataobj/RecoBase/Vertex.h"
#include "lardataobj/RecoBase/Hit.h"
#include "lardataobj/RecoBase/EndPoint2D.h"
#include "lardata/Utilities/AssociationUtil.h"

#include <string>

namespace vertex {


  class AggregateVertex : public art::EDProducer
  {

  public:

    explicit AggregateVertex(fhicl::ParameterSet const& pset);


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

    std::unique_ptr< std::vector<recob::Vertex> >  MatchV2T(art::Event& evt,
                                                          art::Assns<recob::Vertex, recob::Track>& vtassn,
                                                          art::Assns<recob::Vertex, recob::Shower>& vsassn,
                                                          art::Assns<recob::Vertex, recob::Hit>& vhassn);
    std::string fDBScanModuleLabel;
    std::string fHoughModuleLabel;
    std::string fTrack3DModuleLabel;
    std::string fEndPointModuleLabel;

    art::PtrVector<recob::EndPoint2D> feplist;
    art::PtrVector<recob::Track>      ftracklist;
    art::PtrVector<recob::EndPoint2D> feplistStrong;

  }; // class AggregateVertex

}  // Namespace vertex

namespace vertex {

  //-----------------------------------------------
  AggregateVertex::AggregateVertex(fhicl::ParameterSet const& pset)
    : EDProducer{pset}
    , fDBScanModuleLabel  (pset.get< std::string >("DBScanModuleLabel"  ))
    , fHoughModuleLabel   (pset.get< std::string >("HoughModuleLabel"   ))
    , fTrack3DModuleLabel (pset.get< std::string >("Track3DModuleLabel" ))
    , fEndPointModuleLabel(pset.get< std::string >("EndPointModuleLabel"))
  {
    produces< std::vector<recob::Vertex> >();
    produces< art::Assns<recob::Vertex, recob::Hit> >();
    produces< art::Assns<recob::Vertex, recob::Track> >();
    produces< art::Assns<recob::Vertex, recob::Shower> >();
  }

  //-----------------------------------------------
  void AggregateVertex::produce(art::Event& evt)
  {

    art::Handle< std::vector<recob::EndPoint2D> > epListHandle;
    evt.getByLabel(fEndPointModuleLabel,epListHandle);
    for(size_t ii = 0; ii < epListHandle->size(); ++ii){
      art::Ptr<recob::EndPoint2D> ep(epListHandle, ii);
      feplist.push_back(ep); // class member
    }

    art::Handle< std::vector<recob::Track> > trackListHandle;
    evt.getByLabel(fTrack3DModuleLabel,trackListHandle);
    for(size_t ii = 0; ii < trackListHandle->size(); ++ii){
      art::Ptr<recob::Track> track(trackListHandle, ii);
      ftracklist.push_back(track); // class member
    }


    // Only match strong vertices to tracks.
    art::PtrVector<recob::EndPoint2D>::const_iterator epIter = feplist.begin();

    while (epIter != feplist.end()){
      art::Ptr <recob::EndPoint2D> ep = (*epIter);
      if (ep->ID() < 3) feplistStrong.push_back(ep); // -- cuz there's one less
      epIter++;
    }

    // We will suck up the hits out of each vertex and out of the tracks
    // and see if there's an overlap of a sufficient (>0) number of hits. If so,
    // call the track a match to the vtx. Then, .... stick the track pointer(s)
    // into the AggVertex object.  EC, 23-July-2010.
    std::unique_ptr< art::Assns<recob::Vertex, recob::Track>  > vtassn(new art::Assns<recob::Vertex, recob::Track>);
    std::unique_ptr< art::Assns<recob::Vertex, recob::Shower> > vsassn(new art::Assns<recob::Vertex, recob::Shower>);
    std::unique_ptr< art::Assns<recob::Vertex, recob::Hit>    > vhassn(new art::Assns<recob::Vertex, recob::Hit>);

    std::unique_ptr< std::vector<recob::Vertex> > vcol (MatchV2T(evt, *vtassn, *vsassn, *vhassn));

    evt.put(std::move(vcol));
    evt.put(std::move(vtassn));
    evt.put(std::move(vsassn));
    evt.put(std::move(vhassn));
  }

  //-------------------------------------------------------------------------------
  std::unique_ptr< std::vector<recob::Vertex> >  AggregateVertex::MatchV2T(art::Event& evt,
                                                                           art::Assns<recob::Vertex, recob::Track>& vtassn,
                                                                           art::Assns<recob::Vertex, recob::Shower>& vsassn,
                                                                           art::Assns<recob::Vertex, recob::Hit>& vhassn)
  {
    mf::LogInfo("AggregateVertex") << "AggregateEvent::MatchV2T(): (strong) vertexlistStrong"
                                   << " and tracklist lengths are "
                                   << feplistStrong.size() << " and " <<  ftracklist.size() << ".";

    art::FindManyP<recob::Hit> fmhst(feplistStrong, evt, fEndPointModuleLabel);

    // Bail if there are no tracks or vertices.
    //  if (!((int)vertexlistStrong.size()) || !((int)tracklist.size())) return NULL;
    if (feplistStrong.isNull() || ftracklist.isNull()) {
      return std::unique_ptr< std::vector<recob::Vertex> > (new std::vector<recob::Vertex>);
    }

    // Loop on the vertices, and all the hits in each
    std::unique_ptr< std::vector<recob::Vertex> > verts(new std::vector<recob::Vertex>);

    art::FindManyP<recob::Hit> fmht(ftracklist, evt, fTrack3DModuleLabel);
    art::FindManyP<recob::Hit> fmhs(ftracklist, evt, fTrack3DModuleLabel);

    for(size_t epctr = 0; epctr < feplistStrong.size(); ++epctr){
      art::PtrVector<recob::Track>  tlistAssoc; // Will fill with matching tracks.
      art::PtrVector<recob::Shower> slistAssoc; // Will fill with matching showers.
      std::vector<size_t> trkIdx;
      std::vector<size_t> shwIdx;

      std::vector< art::Ptr<recob::Hit> > hitvertexlistStrong = fmhst.at(epctr);

      // Should be just one hit per vtx, as per Josh, but we loop anyway.
      art::PtrVector<recob::Hit>::const_iterator hvIter = hitvertexlistStrong.begin();
      while (hvIter != hitvertexlistStrong.end())  {
        art::Ptr<recob::Hit> hitv = (*hvIter);

        // Now loop on the track hits
        for(size_t t = 0; t < ftracklist.size(); ++t){

          std::vector< art::Ptr<recob::Hit> > hittlist = fmht.at(t);

          std::vector< art::Ptr<recob::Hit> >::const_iterator htIter = hittlist.begin();
          while (htIter != hittlist.end())  {

            art::Ptr<recob::Hit> hitt = (*htIter);

            if (hitt==hitv){
              //std::cout << "AggregateEvent::MatchV2T(): BooYiggity! Vtx/Trk hit match! hitt, hitv= "
              //<< hitt << " " <<hitv << std::endl;
              //std::cout << "AggregateEvent::MatchV2T(): vtx, trk " << vtx<< " " <<trk << std::endl;
              tlistAssoc.push_back(ftracklist[t]);
              trkIdx.push_back(t);
              htIter = hittlist.end()-1; // jump to end of track hitlist, since we've satisfied match
            }
            htIter++;
          } // end hits associated to track
        } // end track loop
        hvIter++;
       }

      // Now if matching tracks were found for this vertex then create the recob::Vertex object.
      if (tlistAssoc.size() > 0){
        /// \todo Really need to also determine the xyz position of the found vertex
        /// \todo Also should determine the ID for this vertex
        double xyz[3] = {-999., -999., -999.};
        verts->push_back(recob::Vertex(xyz, verts->size()));

        // associate the tracks to the vertex
        util::CreateAssn(*this, evt, *verts, tlistAssoc, vtassn);

        //associate the track hits to the vertex
        for(auto const& t : trkIdx){
          std::vector< art::Ptr<recob::Hit> > hits = fmht.at(t);
          util::CreateAssn(*this, evt, *verts, hits, vhassn);
        }
      }// end if there are tracks to be associated

      if (slistAssoc.size() > 0){
        /// \todo Really need to also determine the xyz position of the found vertex
        /// \todo Also should determine the ID for this vertex
        double xyz[3] = {-999., -999., -999.};
        verts->push_back(recob::Vertex(xyz, verts->size()));

        // associate the showers to the vertex
        util::CreateAssn(*this, evt, *verts, slistAssoc, vsassn);

        //associate the shower hits to the vertex
        ///\todo get a shower module label in line 169 and get a list of showers
        ///\todo from the event
        for(auto const& s : shwIdx){
          std::vector< art::Ptr<recob::Hit> > hits = fmhs.at(s);
          util::CreateAssn(*this, evt, *verts, hits, vhassn);
        }
      }// end if there are showers to be associated

      //HnhinVtxes->Fill(hitvertexlistStrong.size(),1);

    } // end loop over end points

    return verts;

  } // end AggregateVertex::MatchV2T


}// end namespace

namespace vertex{

  DEFINE_ART_MODULE(AggregateVertex)

}