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bendavid |
1.1 |
// $Id: TrackToTrackAssociator.cc,v 1.1 2008/09/27 05:48:25 loizides Exp $
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#include "MitEdm/Producers/interface/TrackToTrackAssociator.h"
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#include <TSystem.h>
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#include <TError.h>
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#include "DataFormats/TrackReco/interface/TrackFwd.h"
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#include "MitEdm/DataFormats/interface/Types.h"
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using namespace std;
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using namespace edm;
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using namespace reco;
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using namespace mitedm;
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using namespace mithep;
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//--------------------------------------------------------------------------------------------------
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TrackToTrackAssociator::TrackToTrackAssociator(const ParameterSet& cfg) :
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fromTracksName_(cfg.getUntrackedParameter<string>("fromTracks")),
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toTracksName_(cfg.getUntrackedParameter<string>("toTracks"))
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{
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// Constructor: Register your base product.
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produces<mitedm::TrackAssociation>();
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}
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//--------------------------------------------------------------------------------------------------
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void TrackToTrackAssociator::PrintErrorAndExit(const char *msg) const
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{
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// Print error message and then exit.
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Error("PrintErrorAndExit", msg);
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gSystem->Exit(1);
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}
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//--------------------------------------------------------------------------------------------------
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void TrackToTrackAssociator::produce(Event &evt, const EventSetup &setup)
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{
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Handle<View<reco::Track> > hFromTrackProduct;
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GetProduct(fromTracksName_, hFromTrackProduct, evt);
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const View<reco::Track> fromTracks = *(hFromTrackProduct.product());
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Handle<View<reco::Track> > hToTrackProduct;
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GetProduct(toTracksName_, hToTrackProduct, evt);
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const View<reco::Track> toTracks = *(hToTrackProduct.product());
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auto_ptr<mitedm::TrackAssociation> association(new mitedm::TrackAssociation());
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//fill all for each fromTrack, fill an association for all toTracks which share some hits, using as
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//the association quality the ratio number of matched hits/number of valid hits on toTrack
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for (View<reco::Track>::const_iterator tFrom = fromTracks.begin();
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tFrom != fromTracks.end(); ++tFrom) {
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reco::TrackBaseRef refFrom = fromTracks.refAt(tFrom-fromTracks.begin());
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for (View<reco::Track>::const_iterator tTo = toTracks.begin();
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tTo != toTracks.end(); ++tTo) {
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uint nShared = 0;
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for (uint i=0; i<tTo->recHitsSize(); ++i) {
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if (tTo->recHit(i)->isValid()) {
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bool matchedHit = false;
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for (uint j=0; j<tFrom->recHitsSize() && !matchedHit; ++j) {
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if ( tTo->recHit(i)->sharesInput(tFrom->recHit(j).get(), TrackingRecHit::some) ) {
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nShared++;
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matchedHit=true;
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}
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}
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}
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}
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if (nShared>0) {
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double rShared = (double)nShared/(double)(tTo->numberOfValidHits());
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reco::TrackBaseRef refTo = toTracks.refAt(tTo-toTracks.begin());
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std::pair<TrackBaseRef, double> assocWQuality(refTo,rShared);
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association->insert(refFrom, assocWQuality);
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}
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}
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}
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evt.put(association);
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}
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// Define this as a plug-in
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DEFINE_FWK_MODULE(TrackToTrackAssociator);
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