HGCal3DClustering Class Reference

#include <HGCal3DClustering.h>

Classes
struct	ClusterRef

Public Types
typedef std::vector< reco::BasicCluster >	ClusterCollection

Public Member Functions
void	getEvent (const edm::Event &ev)
void	getEventSetup (const edm::EventSetup &es)
	HGCal3DClustering ()
	HGCal3DClustering (const edm::ParameterSet &conf, edm::ConsumesCollector &sumes, const std::vector< double > &radii_in, uint32_t min_clusters)
std::vector< reco::HGCalMultiCluster >	makeClusters (const reco::HGCalMultiCluster::ClusterCollection &)

Private Types
typedef KDTreeNodeInfoT< ClusterRef, 2 >	KDNode
typedef KDTreeLinkerAlgo< ClusterRef, 2 >	KDTree

Private Member Functions
void	layerIntersection (std::array< double, 3 > &to, const std::array< double, 3 > &from) const
void	organizeByLayer (const reco::HGCalMultiCluster::ClusterCollection &)
void	reset ()

Private Attributes
std::unique_ptr< hgcal::ClusterTools >	clusterTools
std::vector< size_t >	es
std::vector< std::array< float, 2 > >	maxpos
uint32_t	minClusters
std::vector< std::array< float, 2 > >	minpos
std::vector< std::vector< KDNode > >	points
std::vector< double >	radii
hgcal::RecHitTools	rhtools_
std::vector< float >	zees

Static Private Attributes
static const unsigned int	lastLayerBH = 52
static const unsigned int	lastLayerEE = 28
static const unsigned int	lastLayerFH = 40
static const unsigned int	maxlayer = HGCalClusteringAlgoBase::maxlayer

Detailed Description

Definition at line 18 of file HGCal3DClustering.h.

Member Typedef Documentation

typedef std::vector<reco::BasicCluster> HGCal3DClustering::ClusterCollection

Definition at line 45 of file HGCal3DClustering.h.

typedef KDTreeNodeInfoT<ClusterRef,2> HGCal3DClustering::KDNode

private

Definition at line 80 of file HGCal3DClustering.h.

typedef KDTreeLinkerAlgo<ClusterRef,2> HGCal3DClustering::KDTree

private

Definition at line 79 of file HGCal3DClustering.h.

Constructor & Destructor Documentation

HGCal3DClustering::HGCal3DClustering ( )

inline

Definition at line 22 of file HGCal3DClustering.h.

                     : radii({0.,0.,0.}), minClusters(0), clusterTools(nullptr)
  {
  }

HGCal3DClustering::HGCal3DClustering ( const edm::ParameterSet &  conf, edm::ConsumesCollector &  sumes, const std::vector< double > &  radii_in, uint32_t  min_clusters  )

inline

Definition at line 26 of file HGCal3DClustering.h.

References clusterTools, es, maxlayer, maxpos, and zees.

                                                                                                                                       :
  radii(radii_in),
  minClusters(min_clusters),
  points(2*(maxlayer+1)),
  minpos(2*(maxlayer+1),{ {0.0f,0.0f} }),
  maxpos(2*(maxlayer+1),{ {0.0f,0.0f} }),
  es(0),
  zees(2*(maxlayer+1),0.),
  clusterTools(std::make_unique<hgcal::ClusterTools>(conf,sumes))
  {
  }

Member Function Documentation

void HGCal3DClustering::getEvent ( const edm::Event &  ev )

inline

Definition at line 38 of file HGCal3DClustering.h.

References clusterTools.

{ clusterTools->getEvent(ev); }

void HGCal3DClustering::getEventSetup ( const edm::EventSetup &  es )

inline

Definition at line 39 of file HGCal3DClustering.h.

References clusterTools, hgcal::RecHitTools::getEventSetup(), and rhtools_.

  {
    clusterTools->getEventSetup(es);
    rhtools_.getEventSetup(es);
  }

void HGCal3DClustering::layerIntersection ( std::array< double, 3 > &  to, const std::array< double, 3 > &  from  ) const

private

Definition at line 123 of file HGCal3DClustering.cc.

Referenced by makeClusters(), and reset().

{
  if (from[2] != 0) {
      to[0]=from[0]/from[2]*to[2];
      to[1]=from[1]/from[2]*to[2];
  }
  else {
      to[0] = 0;
      to[1] = 0;
  }
}

std::vector< reco::HGCalMultiCluster > HGCal3DClustering::makeClusters

(

const reco::HGCalMultiCluster::ClusterCollection &

thecls

)

Definition at line 50 of file HGCal3DClustering.cc.

References funct::abs(), clusterTools, data, es, runEdmFileComparison::found, mps_fire::i, createfilelist::int, gen::k, lastLayerBH, lastLayerEE, lastLayerFH, layerIntersection(), maxlayer, maxpos, minClusters, minpos, organizeByLayer(), points, position, reco::HGCalMultiCluster::push_back(), radii, TCMET_cfi::radius, reset(), reco::HGCalMultiCluster::size(), groupFilesInBlocks::temp, z, and zees.

                                                                                                                     {
  reset();
  organizeByLayer(thecls);
  std::vector<reco::HGCalMultiCluster> thePreClusters;

  std::vector<KDTree> hit_kdtree(2*(maxlayer+1));
  for (unsigned int i = 0; i <= 2*maxlayer+1; ++i) {
    KDTreeBox bounds(minpos[i][0],maxpos[i][0],
             minpos[i][1],maxpos[i][1]);
    hit_kdtree[i].build(points[i],bounds);
  }
  std::vector<int> vused(es.size(),0);
  unsigned int used = 0;

  unsigned int es_size = es.size();
  for(unsigned int i = 0; i < es_size; ++i) {
    if(vused[i]==0) {
      reco::HGCalMultiCluster temp;
      temp.push_back(thecls[es[i]]);
      vused[i]=(thecls[es[i]]->z()>0)? 1 : -1;
      ++used;
      // Starting from cluster es[i] at from[0] - from[1] - from[2]
      std::array<double,3> from{ {thecls[es[i]]->x(),thecls[es[i]]->y(),thecls[es[i]]->z()} };
      unsigned int firstlayer = int(thecls[es[i]]->z()>0)*(maxlayer+1);
      unsigned int lastlayer = firstlayer+maxlayer+1;
      for(unsigned int j = firstlayer; j < lastlayer; ++j) {
    if(zees[j]==0.){
      // layer j not yet ever reached?
      continue;
    }
    std::array<double,3> to{ {0.,0.,zees[j]} };
    layerIntersection(to,from);
        unsigned int layer = j > maxlayer ? (j-(maxlayer+1)) : j; //maps back from index used for KD trees to actual layer
        float radius = 9999.;
        if(layer <= lastLayerEE) radius = radii[0];
        else if(layer <= lastLayerFH) radius = radii[1];
        else if(layer <= lastLayerBH) radius = radii[2];
        else assert(radius<100. && "nonsense layer value - cannot assign multicluster radius");
        float radius2 = radius*radius;
    KDTreeBox search_box(float(to[0])-radius,float(to[0])+radius,
                 float(to[1])-radius,float(to[1])+radius);
    std::vector<KDNode> found;
    // at layer j in box float(to[0])+/-radius - float(to[1])+/-radius
    hit_kdtree[j].search(search_box,found);
    // found found.size() clusters within box
    for(unsigned int k = 0; k < found.size(); k++){
      if(vused[found[k].data.ind]==0 && distReal2(thecls[es[found[k].data.ind]],to)<radius2){
        temp.push_back(thecls[es[found[k].data.ind]]);
        vused[found[k].data.ind]=vused[i];
        ++used;
      }
    }

      }
      if( temp.size() > minClusters ) {
    math::XYZPoint position = clusterTools->getMultiClusterPosition(temp);
    if (std::abs(position.z()) <= 0.) continue;
    // only store multiclusters that pass the energy threshold in getMultiClusterPosition
    // giving them a position inside the HGCal
    thePreClusters.push_back(temp);
    auto& back = thePreClusters.back();
    back.setPosition(position);
    back.setEnergy(clusterTools->getMultiClusterEnergy(back));
      }

    }

  }

  return thePreClusters;

}

void HGCal3DClustering::organizeByLayer ( const reco::HGCalMultiCluster::ClusterCollection &  thecls )

private

Definition at line 25 of file HGCal3DClustering.cc.

References relativeConstraints::empty, es, plotBeamSpotDB::first, hgcal::RecHitTools::getLayerWithOffset(), mps_fire::i, createfilelist::int, SiStripPI::max, maxlayer, maxpos, min(), minpos, points, rhtools_, hgcal_clustering::sorted_indices(), x, y, z, and zees.

Referenced by makeClusters().

                                                                                            {
  es = sorted_indices(thecls);
  unsigned int es_size = es.size();
  for(unsigned int i = 0; i < es_size; ++i) {
     int layer = rhtools_.getLayerWithOffset(thecls[es[i]]->hitsAndFractions()[0].first);
    layer += int(thecls[es[i]]->z()>0)*(maxlayer+1);
    float x = thecls[es[i]]->x();
    float y = thecls[es[i]]->y();
    float z = thecls[es[i]]->z();
    points[layer].emplace_back(ClusterRef(i,z),x,y);
    if(zees[layer]==0.) {
      // At least one cluster for layer at z
      zees[layer] = z;
    }
    if(points[layer].empty()){
      minpos[layer][0] = x; minpos[layer][1] = y;
      maxpos[layer][0] = x; maxpos[layer][1] = y;
    }else{
      minpos[layer][0] = std::min(x,minpos[layer][0]);
      minpos[layer][1] = std::min(y,minpos[layer][1]);
      maxpos[layer][0] = std::max(x,maxpos[layer][0]);
      maxpos[layer][1] = std::max(y,maxpos[layer][1]);
    }
  }
}

void HGCal3DClustering::reset ( void  )

inlineprivate

Definition at line 52 of file HGCal3DClustering.h.

References lumiContext::fill, mps_fire::i, layerIntersection(), maxpos, minpos, points, edm::swap(), and zees.

Referenced by makeClusters().

              {
    for( auto& it: points)
      {
        it.clear();
        std::vector<KDNode>().swap(it);
      }
    std::fill(zees.begin(), zees.end(), 0.);
    for(unsigned int i = 0; i < minpos.size(); i++)
      {
    minpos[i][0]=0.;minpos[i][1]=0.;
    maxpos[i][0]=0.;maxpos[i][1]=0.;
      }
  }

Member Data Documentation

std::unique_ptr<hgcal::ClusterTools> HGCal3DClustering::clusterTools

private

instance of tools to simplify cluster access.

Definition at line 86 of file HGCal3DClustering.h.

Referenced by getEvent(), getEventSetup(), HGCal3DClustering(), and makeClusters().

std::vector<size_t> HGCal3DClustering::es

private

vector to contain sorted indices of all clusters.

Definition at line 84 of file HGCal3DClustering.h.

Referenced by HGCal3DClustering(), makeClusters(), and organizeByLayer().

const unsigned int HGCal3DClustering::lastLayerBH = 52

staticprivate

Definition at line 90 of file HGCal3DClustering.h.

Referenced by makeClusters().

const unsigned int HGCal3DClustering::lastLayerEE = 28

staticprivate

Definition at line 88 of file HGCal3DClustering.h.

Referenced by makeClusters().

const unsigned int HGCal3DClustering::lastLayerFH = 40

staticprivate

Definition at line 89 of file HGCal3DClustering.h.

Referenced by makeClusters().

const unsigned int HGCal3DClustering::maxlayer = HGCalClusteringAlgoBase::maxlayer

staticprivate

Definition at line 68 of file HGCal3DClustering.h.

Referenced by HGCal3DClustering(), makeClusters(), and organizeByLayer().

std::vector<std::array<float,2> > HGCal3DClustering::maxpos

private

Definition at line 83 of file HGCal3DClustering.h.

Referenced by HGCal3DClustering(), makeClusters(), organizeByLayer(), and reset().

uint32_t HGCal3DClustering::minClusters

private

Definition at line 71 of file HGCal3DClustering.h.

Referenced by makeClusters().

std::vector<std::array<float,2> > HGCal3DClustering::minpos

private

Definition at line 82 of file HGCal3DClustering.h.

Referenced by makeClusters(), organizeByLayer(), and reset().

std::vector< std::vector<KDNode> > HGCal3DClustering::points

private

Definition at line 81 of file HGCal3DClustering.h.

Referenced by makeClusters(), organizeByLayer(), and reset().

std::vector<double> HGCal3DClustering::radii

private

Definition at line 70 of file HGCal3DClustering.h.

Referenced by makeClusters().

hgcal::RecHitTools HGCal3DClustering::rhtools_

private

instance of tools to access RecHit information.

Definition at line 87 of file HGCal3DClustering.h.

Referenced by getEventSetup(), and organizeByLayer().

std::vector<float> HGCal3DClustering::zees

private

vector to contain z position of each layer.

Definition at line 85 of file HGCal3DClustering.h.

Referenced by HGCal3DClustering(), makeClusters(), organizeByLayer(), and reset().