PiecewiseLinearBase.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 "PiecewiseTabularBase.h"

class PiecewiseLinearBase : public PiecewiseTabularBase
{
public:
  static InputParameters validParams();

  PiecewiseLinearBase(const InputParameters & parameters);

  virtual void initialSetup() override;

  using PiecewiseTabularBase::value;
  virtual Real value(Real t, const Point & p) const override;
  virtual ADReal value(const ADReal & t, const ADPoint & p) const override;

  virtual Real timeDerivative(Real t, const Point &) const override;
  virtual RealGradient gradient(Real, const Point & p) const override;
  virtual Real integral() const override;
  virtual Real average() const override;
  virtual Real timeIntegral(Real t1, Real t2, const Point & p) const override;
  virtual void setData(const std::vector<Real> & x, const std::vector<Real> & y) override;

protected:
  void buildInterpolation(const bool extrap = false);

  std::unique_ptr<LinearInterpolation> _linear_interp;

  bool _interpolation_created;
};