HLTTrackClusterRemover.cc

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#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/EDProducer.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/InputTag.h"

#include "DataFormats/SiStripCluster/interface/SiStripCluster.h"
#include "DataFormats/SiPixelCluster/interface/SiPixelCluster.h"
#include "DataFormats/TrackerRecHit2D/interface/SiStripRecHit2D.h"
#include "DataFormats/TrackerRecHit2D/interface/SiStripRecHit1D.h"
#include "DataFormats/TrackerRecHit2D/interface/SiStripMatchedRecHit2D.h"
#include "DataFormats/TrackerRecHit2D/interface/ProjectedSiStripRecHit2D.h"
#include "DataFormats/TrackerRecHit2D/interface/SiPixelRecHit.h"
#include "DataFormats/TrackerRecHit2D/interface/SiPixelRecHitCollection.h"
#include "DataFormats/TrackerRecHit2D/interface/SiStripRecHit2DCollection.h"
#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/SiPixelDetId/interface/PixelSubdetector.h"
#include "DataFormats/SiStripDetId/interface/StripSubdetector.h"
#include "DataFormats/Common/interface/DetSetVector.h"
#include "DataFormats/Common/interface/DetSetVectorNew.h"
#include "DataFormats/Provenance/interface/ProductID.h"

#include "DataFormats/TrackReco/interface/Track.h"
#include "DataFormats/TrackerRecHit2D/interface/ClusterRemovalInfo.h"

#include "TrackingTools/PatternTools/interface/Trajectory.h"
#include "TrackingTools/PatternTools/interface/TrajTrackAssociation.h"
#include "TrackingTools/TrajectoryState/interface/TrajectoryStateOnSurface.h"
//
// class decleration
//

class HLTTrackClusterRemover : public edm::EDProducer {
    public:
        HLTTrackClusterRemover(const edm::ParameterSet& iConfig) ;
        ~HLTTrackClusterRemover() ;
        void produce(edm::Event &iEvent, const edm::EventSetup &iSetup) ;
    private:
        struct ParamBlock {
            ParamBlock() : isSet_(false), usesCharge_(false) {}
            ParamBlock(const edm::ParameterSet& iConfig) :
                isSet_(true), 
                usesCharge_(iConfig.exists("maxCharge")),
                usesSize_(iConfig.exists("maxSize")),
                maxChi2_(iConfig.getParameter<double>("maxChi2")),
                maxCharge_(usesCharge_ ? iConfig.getParameter<double>("maxCharge") : 0), 
                maxSize_(usesSize_ ? iConfig.getParameter<uint32_t>("maxSize") : 0) { }
            bool  isSet_, usesCharge_, usesSize_;
            float maxChi2_, maxCharge_;
            size_t maxSize_;
        };
        static const unsigned int NumberOfParamBlocks = 6;

        edm::InputTag trajectories_;
        bool doStrip_, doPixel_;
        edm::InputTag stripClusters_, pixelClusters_;
        bool mergeOld_;
        edm::InputTag oldRemovalInfo_;

        ParamBlock pblocks_[NumberOfParamBlocks];
        void readPSet(const edm::ParameterSet& iConfig, const std::string &name, 
                int id1=-1, int id2=-1, int id3=-1, int id4=-1, int id5=-1, int id6=-1) ;

        std::vector<uint8_t> pixels, strips;                // avoid unneed alloc/dealloc of this
        edm::ProductID pixelSourceProdID, stripSourceProdID; // ProdIDs refs must point to (for consistency tests)

        inline void process(const TrackingRecHit *hit, float chi2);
        inline void process(const SiStripRecHit2D *hit2D, uint32_t subdet);
        inline void process(const SiStripRecHit1D *hit1D, uint32_t subdet);

        template<typename T> 
        std::auto_ptr<edmNew::DetSetVector<T> >
        cleanup(const edmNew::DetSetVector<T> &oldClusters, const std::vector<uint8_t> &isGood, 
                    reco::ClusterRemovalInfo::Indices &refs, const reco::ClusterRemovalInfo::Indices *oldRefs) ;

        // Carries in full removal info about a given det from oldRefs
        void mergeOld(reco::ClusterRemovalInfo::Indices &refs, const reco::ClusterRemovalInfo::Indices &oldRefs) ;

  bool makeProducts_;
  std::map<uint32_t, std::set< SiStripRecHit1D::ClusterRegionalRef > > collectedRegStrip;
  std::map<uint32_t, std::set< SiPixelRecHit::ClusterRef  > > collectedPixel;
};


using namespace std;
using namespace edm;
using namespace reco;

void
HLTTrackClusterRemover::readPSet(const edm::ParameterSet& iConfig, const std::string &name, 
    int id1, int id2, int id3, int id4, int id5, int id6) 
{
    if (iConfig.exists(name)) {
        ParamBlock pblock(iConfig.getParameter<ParameterSet>(name));
        if (id1 == -1) {
            fill(pblocks_, pblocks_+NumberOfParamBlocks, pblock);
        } else {
            pblocks_[id1] = pblock;
            if (id2 != -1) pblocks_[id2] = pblock;
            if (id3 != -1) pblocks_[id3] = pblock;
            if (id4 != -1) pblocks_[id4] = pblock;
            if (id5 != -1) pblocks_[id5] = pblock;
            if (id6 != -1) pblocks_[id6] = pblock;
        }
    }
}

HLTTrackClusterRemover::HLTTrackClusterRemover(const ParameterSet& iConfig):
    trajectories_(iConfig.getParameter<InputTag>("trajectories")),
    doStrip_(iConfig.existsAs<bool>("doStrip") ? iConfig.getParameter<bool>("doStrip") : true),
    doPixel_(iConfig.existsAs<bool>("doPixel") ? iConfig.getParameter<bool>("doPixel") : true),
    stripClusters_(doStrip_ ? iConfig.getParameter<InputTag>("stripClusters") : InputTag("NONE")),
    pixelClusters_(doPixel_ ? iConfig.getParameter<InputTag>("pixelClusters") : InputTag("NONE")),
    mergeOld_(false),
    oldRemovalInfo_(edm::InputTag()),
    makeProducts_(true)
{

  if (iConfig.exists("oldClusterRemovalInfo"))
    {
      oldRemovalInfo_=iConfig.getParameter<InputTag>("oldClusterRemovalInfo");
      if (not (oldRemovalInfo_== edm::InputTag())) mergeOld_=true;
    }

    fill(pblocks_, pblocks_+NumberOfParamBlocks, ParamBlock());
    readPSet(iConfig, "Common",-1);
    if (doPixel_) {
        readPSet(iConfig, "Pixel" ,0,1);
        readPSet(iConfig, "PXB" ,0);
        readPSet(iConfig, "PXE" ,1);
    }
    if (doStrip_) {
        readPSet(iConfig, "Strip" ,2,3,4,5);
        readPSet(iConfig, "StripInner" ,2,3);
        readPSet(iConfig, "StripOuter" ,4,5);
        readPSet(iConfig, "TIB" ,2);
        readPSet(iConfig, "TID" ,3);
        readPSet(iConfig, "TOB" ,4);
        readPSet(iConfig, "TEC" ,5);
    }

    bool usingCharge = false;
    for (size_t i = 0; i < NumberOfParamBlocks; ++i) {
        if (!pblocks_[i].isSet_) throw cms::Exception("Configuration Error") << "HLTTrackClusterRemover: Missing configuration for detector with subDetID = " << (i+1);
        if (pblocks_[i].usesCharge_ && !usingCharge) {
            throw cms::Exception("Configuration Error") << "HLTTrackClusterRemover: Configuration for subDetID = " << (i+1) << " uses cluster charge, which is not enabled.";
        }
    }

    produces<edmNew::DetSetVector<SiPixelClusterRefNew> >();
    produces<edmNew::DetSetVector<SiStripRecHit1D::ClusterRegionalRef> >();

}


HLTTrackClusterRemover::~HLTTrackClusterRemover()
{
}

void HLTTrackClusterRemover::mergeOld(ClusterRemovalInfo::Indices &refs,
                                            const ClusterRemovalInfo::Indices &oldRefs) 
{
        for (size_t i = 0, n = refs.size(); i < n; ++i) {
            refs[i] = oldRefs[refs[i]];
       }
}

 
template<typename T> 
auto_ptr<edmNew::DetSetVector<T> >
HLTTrackClusterRemover::cleanup(const edmNew::DetSetVector<T> &oldClusters, const std::vector<uint8_t> &isGood, 
                 reco::ClusterRemovalInfo::Indices &refs, const reco::ClusterRemovalInfo::Indices *oldRefs){
    typedef typename edmNew::DetSetVector<T>             DSV;
    typedef typename edmNew::DetSetVector<T>::FastFiller DSF;
    typedef typename edmNew::DetSet<T>                   DS;
    auto_ptr<DSV> output(new DSV());
    output->reserve(oldClusters.size(), oldClusters.dataSize());

    unsigned int countOld=0;
    unsigned int countNew=0;

    // cluster removal loop
    const T * firstOffset = & oldClusters.data().front();
    for (typename DSV::const_iterator itdet = oldClusters.begin(), enddet = oldClusters.end(); itdet != enddet; ++itdet) {
        DS oldDS = *itdet;

        if (oldDS.empty()) continue; // skip empty detsets

        uint32_t id = oldDS.detId();
        DSF outds(*output, id);

        for (typename DS::const_iterator it = oldDS.begin(), ed = oldDS.end(); it != ed; ++it) {
            uint32_t index = ((&*it) - firstOffset);
        countOld++;
            if (isGood[index]) { 
                outds.push_back(*it);
        countNew++;
                refs.push_back(index); 
                //std::cout << "HLTTrackClusterRemover::cleanup " << typeid(T).name() << " reference " << index << " to " << (refs.size() - 1) << std::endl;
            }

    }
        if (outds.empty()) outds.abort(); // not write in an empty DSV
    }
    //    double fraction = countNew  / (double) countOld;
    //    std::cout<<"fraction: "<<fraction<<std::endl;
    if (oldRefs != 0) mergeOld(refs, *oldRefs);
    return output;
}


void HLTTrackClusterRemover::process(const SiStripRecHit2D *hit, uint32_t subdet) {
  SiStripRecHit2D::ClusterRegionalRef clusterReg = hit->cluster_regional();
  if (clusterReg.id() != stripSourceProdID) throw cms::Exception("Inconsistent Data") <<
    "HLTTrackClusterRemover: strip cluster ref from Product ID = " << clusterReg.id() <<
    " does not match with source cluster collection (ID = " << stripSourceProdID << ")\n.";
  collectedRegStrip[hit->geographicalId()].insert(clusterReg);
}

void HLTTrackClusterRemover::process(const SiStripRecHit1D *hit, uint32_t subdet) {
  SiStripRecHit2D::ClusterRegionalRef clusterReg = hit->cluster_regional();
  if (clusterReg.id() != stripSourceProdID) throw cms::Exception("Inconsistent Data") << 
    "HLTTrackClusterRemover: strip cluster ref from Product ID = " << clusterReg.id() << 
    " does not match with source cluster collection (ID = " << stripSourceProdID << ")\n.";
  collectedRegStrip[hit->geographicalId()].insert(clusterReg);
}



void HLTTrackClusterRemover::process(const TrackingRecHit *hit, float chi2) {
    DetId detid = hit->geographicalId(); 
    uint32_t subdet = detid.subdetId();

    assert ((subdet > 0) && (subdet <= NumberOfParamBlocks));

    // chi2 cut
    if (chi2 > pblocks_[subdet-1].maxChi2_) return;

    if ((subdet == PixelSubdetector::PixelBarrel) || (subdet == PixelSubdetector::PixelEndcap)) {
      //      std::cout<<"process pxl hit"<<std::endl;
        if (!doPixel_) return;
        // this is a pixel, and i *know* it is
        const SiPixelRecHit *pixelHit = static_cast<const SiPixelRecHit *>(hit);

        SiPixelRecHit::ClusterRef cluster = pixelHit->cluster();

        if (cluster.id() != pixelSourceProdID) throw cms::Exception("Inconsistent Data") << 
                "HLTTrackClusterRemover: pixel cluster ref from Product ID = " << cluster.id() << 
                " does not match with source cluster collection (ID = " << pixelSourceProdID << ")\n.";

        assert(cluster.id() == pixelSourceProdID);
//DBG// cout << "HIT NEW PIXEL DETID = " << detid.rawId() << ", Cluster [ " << cluster.key().first << " / " <<  cluster.key().second << " ] " << endl;

        // if requested, cut on cluster size
        if (pblocks_[subdet-1].usesSize_ && (cluster->pixels().size() > pblocks_[subdet-1].maxSize_)) return;

        // mark as used
    //        pixels[cluster.key()] = false;
    
    collectedPixel[detid.rawId()].insert(cluster);
    } else { // aka Strip
        if (!doStrip_) return;
        const type_info &hitType = typeid(*hit);
        if (hitType == typeid(SiStripRecHit2D)) {
            const SiStripRecHit2D *stripHit = static_cast<const SiStripRecHit2D *>(hit);
//DBG//     cout << "Plain RecHit 2D: " << endl;
            process(stripHit,subdet);}
    else if (hitType == typeid(SiStripRecHit1D)) {
      const SiStripRecHit1D *hit1D = static_cast<const SiStripRecHit1D *>(hit);
      process(hit1D,subdet);
        } else if (hitType == typeid(SiStripMatchedRecHit2D)) {
            const SiStripMatchedRecHit2D *matchHit = static_cast<const SiStripMatchedRecHit2D *>(hit);
//DBG//     cout << "Matched RecHit 2D: " << endl;
            process(matchHit->monoHit(),subdet);
            process(matchHit->stereoHit(),subdet);
        } else if (hitType == typeid(ProjectedSiStripRecHit2D)) {
            const ProjectedSiStripRecHit2D *projHit = static_cast<const ProjectedSiStripRecHit2D *>(hit);
//DBG//     cout << "Projected RecHit 2D: " << endl;
            process(&projHit->originalHit(),subdet);
        } else throw cms::Exception("NOT IMPLEMENTED") << "Don't know how to handle " << hitType.name() << " on detid " << detid.rawId() << "\n";
    }
}

/*   Schematic picture of n-th step Iterative removal
 *   (that os removing clusters after n-th step tracking)
 *   clusters:    [ C1 ] -> [ C2 ] -> ... -> [ Cn ] -> [ Cn + 1 ]
 *                   ^                          ^           ^--- OUTPUT "new" ID
 *                   |-- before any removal     |----- Source clusters                                                                             
 *                   |-- OUTPUT "old" ID        |----- Hits in Traj. point here                       
 *                   |                          \----- Old ClusterRemovalInfo "new" ID                 
 *                   \-- Old ClusterRemovalInfo "old" ID                                                  
 */


void
HLTTrackClusterRemover::produce(Event& iEvent, const EventSetup& iSetup)
{
    ProductID pixelOldProdID, stripOldProdID;

    Handle<edmNew::DetSetVector<SiPixelCluster> > pixelClusters;
    if (doPixel_) {
        iEvent.getByLabel(pixelClusters_, pixelClusters);
        pixelSourceProdID = pixelClusters.id();
    }

    Handle<edm::LazyGetter<SiStripCluster> > stripClusters;
    if (doStrip_) {
        iEvent.getByLabel(stripClusters_, stripClusters);
        stripSourceProdID = stripClusters.id();
    }

    //Handle<TrajTrackAssociationCollection> trajectories; 
    Handle<vector<Trajectory> > trajectories; 
    iEvent.getByLabel(trajectories_, trajectories);


    //for (TrajTrackAssociationCollection::const_iterator it = trajectories->begin(), ed = trajectories->end(); it != ed; ++it)  {
    //    const Trajectory &tj = * it->key;
    for (vector<Trajectory>::const_iterator it = trajectories->begin(), ed = trajectories->end(); it != ed; ++it)  {
        const Trajectory &tj = * it;
        const vector<TrajectoryMeasurement> &tms = tj.measurements();
        vector<TrajectoryMeasurement>::const_iterator itm, endtm;
        for (itm = tms.begin(), endtm = tms.end(); itm != endtm; ++itm) {
            const TrackingRecHit *hit = itm->recHit()->hit();
            if (!hit->isValid()) continue; 
        //      std::cout<<"process hit"<<std::endl;
            process( hit, itm->estimate() );
        }
    }

    

    auto_ptr<edmNew::DetSetVector<SiPixelClusterRefNew> > removedPixelClsuterRefs(new edmNew::DetSetVector<SiPixelClusterRefNew>());
    auto_ptr<edmNew::DetSetVector<SiStripRecHit1D::ClusterRegionalRef> > removedStripClsuterRegRefs(new edmNew::DetSetVector<SiStripRecHit1D::ClusterRegionalRef>());

    edm::Handle<edmNew::DetSetVector<SiPixelClusterRefNew> > oldPxlRef;
    edm::Handle<edmNew::DetSetVector<SiStripRecHit1D::ClusterRegionalRef> > oldStrRegRef;      

    if (mergeOld_){
      iEvent.getByLabel(oldRemovalInfo_,oldPxlRef);
      iEvent.getByLabel(oldRemovalInfo_,oldStrRegRef);
      LogDebug("TrackClusterRemover")<<"to merge in, "<<oldStrRegRef->size()<<" strp and "<<oldPxlRef->size()<<" pxl";
    }

    if (mergeOld_){
      for (edmNew::DetSetVector<SiStripRecHit1D::ClusterRegionalRef>::const_iterator itOld=oldStrRegRef->begin();itOld!=oldStrRegRef->end();++itOld){
    uint32_t id = itOld->detId();
    collectedRegStrip[id].insert(itOld->begin(),itOld->end());
      }
    }
    for (std::map<uint32_t, std::set< SiStripRecHit1D::ClusterRegionalRef > >::iterator itskiped= collectedRegStrip.begin();
     itskiped!=collectedRegStrip.end();++itskiped){
      edmNew::DetSetVector<SiStripRecHit1D::ClusterRegionalRef>::FastFiller fill(*removedStripClsuterRegRefs, itskiped->first);
      for (std::set< SiStripRecHit1D::ClusterRegionalRef >::iterator topush = itskiped->second.begin();
       topush!=itskiped->second.end();++topush){
    fill.push_back(*topush);
      }
      if (fill.empty()) fill.abort();
      itskiped->second.clear();
    }
    iEvent.put( removedStripClsuterRegRefs );

    if (mergeOld_){
      for (edmNew::DetSetVector<SiPixelClusterRefNew>::const_iterator itOld=oldPxlRef->begin();itOld!=oldPxlRef->end();++itOld){
    uint32_t id = itOld->detId();
    collectedPixel[id].insert(itOld->begin(),itOld->end());
      }
    }
    
    for (std::map<uint32_t, std::set< SiPixelRecHit::ClusterRef  > >::iterator itskiped= collectedPixel.begin();
     itskiped!=collectedPixel.end();++itskiped){  
      edmNew::DetSetVector<SiPixelClusterRefNew>::FastFiller fill(*removedPixelClsuterRefs, itskiped->first);
      for (std::set< SiPixelRecHit::ClusterRef  >::iterator topush = itskiped->second.begin(); 
       topush!=itskiped->second.end();++topush){ 
    fill.push_back(*topush); 
      }
      if (fill.empty()) fill.abort();   
      itskiped->second.clear();
    }
    iEvent.put( removedPixelClsuterRefs );
    
}

#include "FWCore/PluginManager/interface/ModuleDef.h"
#include "FWCore/Framework/interface/MakerMacros.h"
DEFINE_FWK_MODULE(HLTTrackClusterRemover);