MFEMElementAverageValue.h

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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
 
#pragma once
 
#include "MFEMPostprocessor.h"
#include "MFEMBlockRestrictable.h"
 
class MFEMElementAverageValue : public MFEMPostprocessor, public MFEMBlockRestrictable
{
public:
  static InputParameters validParams();
 
  MFEMElementAverageValue(const InputParameters & parameters);
 
  void initialize() override {}
  void execute() override;
 
  PostprocessorValue getValue() const override final;
 
private:
  mfem::ParGridFunction & _var;
  mfem::ConstantCoefficient _one;
  mfem::ParLinearForm _lf;
  mfem::real_t _value{0};
};
 
#endif