GenericPairGenerator.cc

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#include "RecoTracker/SpecialSeedGenerators/interface/GenericPairGenerator.h"
//#include "RecoTracker/TkSeedingLayers/interface/SeedingLayerSetsBuilder.h"
typedef TransientTrackingRecHit::ConstRecHitPointer SeedingHit;

#include "FWCore/MessageLogger/interface/MessageLogger.h"
using namespace ctfseeding;


GenericPairGenerator::GenericPairGenerator(const edm::ParameterSet& conf): 
    theLsb(conf.getParameter<edm::ParameterSet>("LayerPSet")){
    edm::LogInfo("CtfSpecialSeedGenerator|GenericPairGenerator") << "Constructing GenericPairGenerator";
} 


SeedingLayerSets GenericPairGenerator::init(const edm::EventSetup& es){
    //edm::ParameterSet leyerPSet = conf_.getParameter<edm::ParameterSet>("LayerPSet");
    //SeedingLayerSetsBuilder lsBuilder(leyerPSet);
    SeedingLayerSets lss = theLsb.layers(es);
    return lss; 
}


const OrderedSeedingHits& GenericPairGenerator::run(const TrackingRegion& region,
                                        const edm::Event& e,
                                            const edm::EventSetup& es){
    hitPairs.clear();
    hitPairs.reserve(0);
    SeedingLayerSets lss = init(es);
    SeedingLayerSets::const_iterator iLss;
    for (iLss = lss.begin(); iLss != lss.end(); iLss++){
        SeedingLayers ls = *iLss;
        if (ls.size() != 2){
                    throw cms::Exception("CtfSpecialSeedGenerator") << "You are using " << ls.size() <<" layers in set instead of 2 ";
            }   
        std::vector<SeedingHit> innerHits  = region.hits(e, es, &ls[0]);
        std::vector<SeedingHit> outerHits  = region.hits(e, es, &ls[1]);
        std::vector<SeedingHit>::const_iterator iOuterHit;
        for (iOuterHit = outerHits.begin(); iOuterHit != outerHits.end(); iOuterHit++){
            std::vector<SeedingHit>::const_iterator iInnerHit;
            for (iInnerHit = innerHits.begin(); iInnerHit != innerHits.end(); iInnerHit++){
                hitPairs.push_back(OrderedHitPair(*iInnerHit,
                                  *iOuterHit));
            }
        }
        }
    return hitPairs;
}