RKLocalFieldProvider.cc

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#include "RKLocalFieldProvider.h"
#include "MagneticField/Engine/interface/MagneticField.h"
#include "MagneticField/VolumeGeometry/interface/MagVolume.h"
#include "FWCore/Utilities/interface/Likely.h"

RKLocalFieldProvider::RKLocalFieldProvider( const MagVolume& vol) :
  theVolume( vol), theFrame(vol), transform_(false) {}

RKLocalFieldProvider::RKLocalFieldProvider( const MagVolume& vol, const Frame& frame) :
  theVolume( vol), theFrame(frame), transform_(true) {}

RKLocalFieldProvider::Vector RKLocalFieldProvider::inTesla( const LocalPoint& lp) const 
{
  if UNLIKELY(transform_) {
      LocalPoint vlp( theVolume.toLocal( theFrame.toGlobal( lp)));
      return theFrame.toLocal( theVolume.toGlobal( theVolume.fieldInTesla( vlp))).basicVector();
    }
  return theVolume.fieldInTesla( lp).basicVector();

}