GriddedData.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 "MooseTypes.h"
#include "MooseError.h"
#include "MooseUtils.h"

#include <iosfwd>
#include <string>
#include <vector>

class GriddedData
{
public:
  GriddedData(std::string file_name);

  virtual ~GriddedData() = default;

  typedef MooseUtils::SemidynamicVector<Real, 4> GridPoint;
  typedef MooseUtils::SemidynamicVector<ADReal, 4> ADGridPoint;
  typedef MooseUtils::SemidynamicVector<unsigned int, 4> GridIndex;

  unsigned int getDim();

  void getAxes(std::vector<int> & axes);

  void getGrid(std::vector<std::vector<Real>> & grid);

  void getFcn(std::vector<Real> & fcn);

  Real evaluateFcn(const GridIndex & ijk);

  static void parse(unsigned int & dim,
                    std::vector<int> & axes,
                    std::vector<std::vector<Real>> & grid,
                    std::vector<Real> & f,
                    std::vector<unsigned int> & step,
                    std::string file_name);

private:
  unsigned int _dim;
  std::vector<int> _axes;
  std::vector<std::vector<Real>> _grid;
  std::vector<Real> _fcn;
  std::vector<unsigned int> _step;
  static bool getSignificantLine(std::ifstream & file_stream, std::string & line);

  static void splitToRealVec(const std::string & input_string, std::vector<Real> & output_vec);

  void updateGrid(unsigned int & dim, const std::vector<Real> & axis_i, const int axis_index);
};