TrackCheater_module.cc
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1 ////////////////////////////////////////////////////////////////////////
2 /// \brief TrackCheater module
3 ///
4 /// \author brebel@fnal.gov
5 ////////////////////////////////////////////////////////////////////////
6 
7 #include <string>
8 #include <vector>
9 
10 // NOvASoft includes
11 #include "MCCheater/BackTracker.h"
12 #include "Geometry/Geometry.h"
13 #include "RecoBase/Track.h"
14 #include "RecoBase/CellHit.h"
15 #include "RecoBase/Cluster.h"
17 #include "Utilities/AssociationUtil.h"
18 
19 // Framework includes
21 #include "fhiclcpp/ParameterSet.h"
30 
31 namespace cheat {
32  class TrackCheater : public art::EDProducer {
33  public:
34  explicit TrackCheater(fhicl::ParameterSet const& pset);
35  virtual ~TrackCheater();
36 
37  void produce(art::Event& evt);
38 
39  void reconfigure(fhicl::ParameterSet const& pset);
40 
41  private:
42 
43  std::string fCheatedClusterLabel; ///< label for module creating recob::Cluster objects
44  std::string fG4ModuleLabel; ///< label for module running G4 and making particles, etc
45 
46  };
47 }
48 
49 namespace cheat{
50 
51  //--------------------------------------------------------------------
53  {
54  this->reconfigure(pset);
55 
56  produces< std::vector<rb::Track> >();
57  produces< art::Assns<rb::Track, rb::CellHit> >();
58  produces< art::Assns<rb::Track, rb::Cluster> >();
59  }
60 
61  //--------------------------------------------------------------------
63  {
64  }
65 
66  //--------------------------------------------------------------------
68  {
69  fCheatedClusterLabel = pset.get< std::string >("CheatedClusterLabel", "cluster" );
70  fG4ModuleLabel = pset.get< std::string >("G4ModuleLabel", "geantgen");
71 
72  return;
73  }
74 
75  //--------------------------------------------------------------------
77  {
80  const sim::ParticleNavigator& pnav = bt->ParticleNavigator();
81 
82  // grab the clusters that have been reconstructed
84  evt.getByLabel(fCheatedClusterLabel, clustercol);
85 
86  // make a vector of them - we aren't writing anything out to a file
87  // so no need for a art::PtrVector here
88  std::vector< art::Ptr<rb::Cluster> > clusters;
89  art::fill_ptr_vector(clusters, clustercol);
90 
91  // get the hits associated with each cluster and associate those with the track
93 
94  // make a map of vectors of art::Ptrs keyed by trackID values
95  std::map< int, std::vector< art::Ptr<rb::Cluster> > > tidClusterMap;
96  std::map< int, std::vector< size_t > > tidClusterIdxMap;
97 
98  // loop over all clusters and fill in the map
99  size_t idx = 0;
100  for(auto const& itr : clusters){
101 
102  // in the ClusterCheater module we set the cluster ID to be
103  // the particle track ID*1000 + view*10. The
104  // floor function on the cluster ID / 1000 will give us
105  // the track ID
106  int tID = floor(itr->ID()/1000.);
107 
108  tidClusterMap[tID].push_back(itr);
109  tidClusterIdxMap[tID].push_back(idx);
110 
111  ++idx;
112  }// end loop over clusters
113 
114 
115  // loop over the map and make prongs
116  std::unique_ptr< std::vector<rb::Track> > trackcol(new std::vector<rb::Track>);
117  std::unique_ptr< art::Assns<rb::Track, rb::CellHit> > assnHit(new art::Assns<rb::Track, rb::CellHit>);
118  std::unique_ptr< art::Assns<rb::Track, rb::Cluster> > assnCluster(new art::Assns<rb::Track, rb::Cluster>);
119 
120  for(auto clusterMapItr : tidClusterMap){
121 
122  // is this prong electro-magnetic in nature or
123  // hadronic/muonic? EM --> shower, everything else is a track
124  if( std::abs(pnav[clusterMapItr.first]->PdgCode()) != 11 &&
125  std::abs(pnav[clusterMapItr.first]->PdgCode()) != 22 &&
126  std::abs(pnav[clusterMapItr.first]->PdgCode()) != 111 ){
127 
128  LOG_DEBUG("TrackCheater") << "prong of " << clusterMapItr.first
129  << " is a track with pdg code "
130  << pnav[clusterMapItr.first]->PdgCode();
131 
132  // separate out the hits for each particle into the different views
133  std::vector< art::Ptr<rb::Cluster> > tidClusters( clusterMapItr.second );
134  std::vector< size_t> tidClusterIdx( tidClusterIdxMap.find(clusterMapItr.first)->second );
135 
136  if(tidClusters.size() != 2)
137  LOG_WARNING("TrackCheater") << "attempting to make a track with a number of "
138  << "clusters other than 2: " << tidClusters.size()
139  << " true particle is \n"
140  << *(pnav[clusterMapItr.first]);
141 
142  // get the hits from the different clusters
144  for(size_t c = 0; c < tidClusters.size(); ++c){
145  for(size_t h = 0; h < tidClusters[c]->NCell(); ++h)
146  ptrvs.push_back(tidClusters[c]->Cell(h));
147  }
148 
149  // get the initial position and direction of the particle
150  std::vector<TVector3> trajPoints;
151  // need the trajectory points for this track - get them using
152  // the MCParticle
153  unsigned int numTraj = pnav[clusterMapItr.first]->NumberTrajectoryPoints();
154  for(unsigned int t = 1; t < numTraj; ++t){
155  if(std::abs(pnav[clusterMapItr.first]->Vx(t)) < geo->DetHalfWidth() &&
156  std::abs(pnav[clusterMapItr.first]->Vy(t)) < geo->DetHalfHeight() &&
157  pnav[clusterMapItr.first]->Vz(t) > 0 && pnav[clusterMapItr.first]->Vz(t) < geo->DetLength()){
158  trajPoints.push_back(TVector3(pnav[clusterMapItr.first]->Vx(t),
159  pnav[clusterMapItr.first]->Vy(t),
160  pnav[clusterMapItr.first]->Vz(t)));
161  }
162  }// end loop over trajectory points
163 
164  TVector3 dir(pnav[clusterMapItr.first]->Px()/pnav[clusterMapItr.first]->P(),
165  pnav[clusterMapItr.first]->Py()/pnav[clusterMapItr.first]->P(),
166  pnav[clusterMapItr.first]->Pz()/pnav[clusterMapItr.first]->P());
167 
168  // add a prong to the collection. Make the prong
169  // ID be the same as the track ID for the eve particle
170  trackcol->push_back(rb::Track(ptrvs, trajPoints.front(), dir, clusterMapItr.first));
171 
172  for(auto const& traj : trajPoints) trackcol->back().AppendTrajectoryPoint(traj);
173 
174  for(size_t c = 0; c < tidClusterIdx.size(); ++c){
175  std::vector< art::Ptr<rb::CellHit> > hits = fmh.at(tidClusterIdx[c]);
176  util::CreateAssn(*this, evt, *trackcol, hits, *assnHit);
177  util::CreateAssn(*this, evt, *trackcol, tidClusters[c], *assnCluster);
178  }
179 
180  LOG_DEBUG("TrackCheater") << "adding track: \n"
181  << trackcol->back()
182  << "\nto collection.";
183 
184  }//end if this is a track
185 
186  } // end loop over the map
187 
188  evt.put(std::move(trackcol));
189  evt.put(std::move(assnHit));
190  evt.put(std::move(assnCluster));
191 
192  return;
193 
194  } // end produce
195 
196 } // end namespace
197 
198 namespace cheat{
199 
201 
202 }
#define LOG_DEBUG(stream)
Definition: Messenger.h:149
back track the reconstruction to the simulation
static bool CreateAssn(art::EDProducer const &prod, art::Event &evt, std::vector< T > &a, art::Ptr< U > b, art::Assns< T, U > &assn, size_t indx=UINT_MAX, std::string const &instance=std::string())
Create a 1 to 1 association between a new product and one already in the event.
const sim::ParticleNavigator & ParticleNavigator() const
Get a reference to the ParticleNavigator.
Definition: BackTracker.h:744
void reconfigure(fhicl::ParameterSet const &pset)
double DetLength() const
std::string fG4ModuleLabel
label for module running G4 and making particles, etc
A rb::Prong with full reconstructed trajectory.
Definition: Track.h:20
DEFINE_ART_MODULE(TestTMapFile)
float abs(float number)
Definition: d0nt_math.hpp:39
ProductID put(std::unique_ptr< PROD > &&product)
Definition: Event.h:102
void hits()
Definition: readHits.C:15
TrackCheater(fhicl::ParameterSet const &pset)
void push_back(Ptr< U > const &p)
Definition: PtrVector.h:441
T get(std::string const &key) const
Definition: ParameterSet.h:231
double DetHalfHeight() const
void produce(art::Event &evt)
#define LOG_WARNING(category)
reference front()
Definition: PtrVector.h:379
::xsd::cxx::tree::string< char, simple_type > string
Definition: Database.h:154
code to link reconstructed objects back to the MC truth information
Definition: FillTruth.h:16
double DetHalfWidth() const
TDirectory * dir
Definition: macro.C:5
bool getByLabel(std::string const &label, std::string const &productInstanceName, Handle< PROD > &result) const
Definition: DataViewImpl.h:344
fvar< T > floor(const fvar< T > &x)
Definition: floor.hpp:11
void fill_ptr_vector(std::vector< Ptr< T >> &ptrs, H const &h)
Definition: Ptr.h:464
Helper for AttenCurve.
Definition: Path.h:10
Encapsulate the geometry of one entire detector (near, far, ndos)
std::string fCheatedClusterLabel
label for module creating recob::Cluster objects