SetMFEMMeshFESpaceAction.C

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html

#ifdef MOOSE_MFEM_ENABLED

#include "SetMFEMMeshFESpaceAction.h"

registerMooseAction("MooseApp", SetMFEMMeshFESpaceAction, "set_mesh_fe_space");

InputParameters
SetMFEMMeshFESpaceAction::validParams()
{
  InputParameters params = Action::validParams();
  params.addClassDescription("Set the mesh nodal finite element space to the same as the mesh "
                             "displacement variable, if one is specified.");
  return params;
}

SetMFEMMeshFESpaceAction::SetMFEMMeshFESpaceAction(const InputParameters & parameters)
  : Action(parameters)
{
}

void
SetMFEMMeshFESpaceAction::act()
{
  if (_problem->feBackend() == Moose::FEBackend::MFEM)
  {
    auto & mfem_problem = static_cast<MFEMProblem &>(*_problem);
    if (const auto displacement = mfem_problem.getMeshDisplacementGridFunction())
      mfem_problem.mesh().getMFEMParMesh().SetNodalFESpace(displacement.value().get().ParFESpace());
  }
}

#endif