EtaInterval.h

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#ifndef GeometryVector_EtaInterval_H
#define GeometryVector_EtaInterval_H
#include "DataFormats/GeometryVector/interface/Basic3DVector.h"

class EtaInterval {
public:
  EtaInterval(float eta1, float eta2) : z1(::sinhf(eta1)), z2(::sinhf(eta2)) {}

  template <typename T>
  bool inside(Basic3DVector<T> const& v) const {
    auto z = v.z();
    auto r = v.perp();
    return (z > z1 * r) & (z < z2 * r);
  }

private:
  float z1, z2;
};

#endif