CombinedHitPairGeneratorForPhotonConversion.h

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#ifndef CombinedHitPairGeneratorForPhotonConversion_H
#define CombinedHitPairGeneratorForPhotonConversion_H

#include <vector>
#include <memory>
#include "RecoTracker/TkHitPairs/interface/HitPairGenerator.h"
#include "HitPairGeneratorFromLayerPairForPhotonConversion.h"
#include "RecoTracker/TkHitPairs/interface/LayerHitMapCache.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/EDGetToken.h"


class TrackingRegion;
class OrderedHitPairs;
class HitPairGeneratorFromLayerPairForPhotonConversion;
class SeedingLayerSetsHits;
namespace edm { class Event; class EventSetup; }

#include "ConversionRegion.h"

class dso_hidden CombinedHitPairGeneratorForPhotonConversion  {
public:
  typedef LayerHitMapCache LayerCacheType;

public:
  CombinedHitPairGeneratorForPhotonConversion(const edm::ParameterSet & cfg, edm::ConsumesCollector& iC);

  const OrderedHitPairs & run(
                  const ConversionRegion& convRegion,
                  const TrackingRegion& region, const edm::Event & ev, const edm::EventSetup& es);

private:
  void hitPairs( const ConversionRegion& convRegion, const TrackingRegion& reg, 
         OrderedHitPairs & result, const edm::Event& ev, const edm::EventSetup& es);

public:
  void clearCache();


private:

  edm::EDGetTokenT<SeedingLayerSetsHits> theSeedingLayerToken;

  uint32_t maxHitPairsPerTrackAndGenerator;

  LayerCacheType   theLayerCache;

  std::unique_ptr<HitPairGeneratorFromLayerPairForPhotonConversion> theGenerator;

  OrderedHitPairs thePairs;

  unsigned int theMaxElement;

};
#endif