G4ElectricFieldModel.cc

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// Michael Kelsey  31st January 2019 -- Adapted from new G4MagneticFieldModel
//
// Class Description:
//
// Model that knows how to draw the electric field.

#include "G4ElectricFieldModel.hh"
#include "G4Field.hh"
#include "G4Point3D.hh"


// Return electric field vector for display

void G4ElectricFieldModel::
GetFieldAtLocation(const G4Field* field, const G4Point3D& position,
       G4double time, G4Point3D& result) const {
  if (!field) return;     // No action if no field

  G4double xyzt[4] = { position.x(), position.y(), position.z(), time };
  G4double BEvals[6] = {0.};    // Field returns {Bx,By,Bz,Ex,Ey,Ez}
  field->GetFieldValue(xyzt, BEvals);

  result.set(BEvals[3], BEvals[4], BEvals[5]);
  return;
}