ParameterMeshFunction.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

#pragma once

#include "OptimizationFunction.h"
#include "ReporterInterface.h"

#include "ParameterMesh.h"

class ParameterMeshFunction : public OptimizationFunction, public ReporterInterface
{
public:
  static InputParameters validParams();

  ParameterMeshFunction(const InputParameters & parameters);

  using Function::value;
  virtual Real value(Real t, const Point & p) const override;
  virtual RealGradient gradient(Real t, const Point & p) const override;
  virtual Real timeDerivative(Real t, const Point & p) const override;
  virtual std::vector<Real> parameterGradient(Real t, const Point & p) const override;

protected:
  std::array<std::pair<std::size_t, Real>, 2> interpolateTime(Real t,
                                                              bool derivative = false) const;

  void checkSize() const;

  const ParameterMesh _parameter_mesh;
  const std::vector<Real> & _values;
  const std::vector<Real> & _coordt;

private:
  const std::vector<Real> _empty_vec = {};
};