PixelRecoUtilities.cc

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#include "RecoTracker/TkMSParametrization/interface/PixelRecoUtilities.h"
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "MagneticField/Engine/interface/MagneticField.h"
#include "MagneticField/Records/interface/IdealMagneticFieldRecord.h"
 
namespace PixelRecoUtilities {
  FieldAt0::FieldAt0(const edm::EventSetup& es) {
    edm::ESHandle<MagneticField> pSetup;
    es.get<IdealMagneticFieldRecord>().get(pSetup);
    fieldInInvGev = 1.f / std::abs(pSetup->inTesla(GlobalPoint(0, 0, 0)).z() * 2.99792458e-3f);
  }
 
}  // namespace PixelRecoUtilities