OuterHitCompatibility.h

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#ifndef RecoTracker_TkTrackingRegions_OuterHitCompatibility_H
#define RecoTracker_TkTrackingRegions_OuterHitCompatibility_H


#include "FWCore/Framework/interface/EventSetup.h"
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include "OuterHitPhiPrediction.h"
#include "RecoTracker/TkTrackingRegions/interface/HitRZCompatibility.h"
#include "DataFormats/TrackingRecHit/interface/TrackingRecHit.h"
#include "TrackingTools/TransientTrackingRecHit/interface/TransientTrackingRecHit.h"

#include "TrackingTools/DetLayers/interface/PhiLess.h"
#include "DataFormats/Math/interface/approx_atan2.h"

#include "FWCore/Utilities/interface/Visibility.h"

template<typename Algo>
class dso_internal OuterHitCompatibility {
public:

  OuterHitCompatibility(
      const OuterHitPhiPrediction & phiPrediction,
      const Algo  & rzCompatibility) 
    : thePhiPrediction(phiPrediction), 
      theRZCompatibility(rzCompatibility) {}

  bool operator() (const TrackingRecHit & hit) const {

     auto hitPos = hit.globalPosition();
     auto hitR = hitPos.perp();

     auto hitZ = hitPos.z();
     if ( !theRZCompatibility(hitR,hitZ) ) return false;

     auto hitPhi = unsafe_atan2f<9>(hitPos.y(),hitPos.x());

     return checkPhi(hitPhi, hitR);
   }


  bool checkPhi(float phi, float r) const {
    auto hitPhiRange = thePhiPrediction(r);
    PhiLess less;
    bool phiOK = less(hitPhiRange.min(),phi) && less(phi,hitPhiRange.max());
    return phiOK;
  }

private:
  OuterHitPhiPrediction thePhiPrediction;
  Algo theRZCompatibility;
};
#endif