Curve.h

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// SPDX-FileCopyrightText: Copyright (c) OpenGeoSys Community (opengeosys.org)
// SPDX-License-Identifier: BSD-3-Clause
 
#pragma once
 
#include "MaterialLib/MPL/Property.h"
#include "MaterialLib/MPL/VariableType.h"
#include "MathLib/InterpolationAlgorithms/PiecewiseLinearInterpolation.h"
 
namespace MaterialPropertyLib
{
using StringOrVariable = std::variant<std::string, Variable>;
class Curve final : public Property
{
public:
    Curve(std::string name, StringOrVariable const independent_variable,
          MathLib::PiecewiseLinearInterpolation const& curve);

    PropertyDataType value(VariableArray const& variable_array,
                           ParameterLib::SpatialPosition const& pos,
                           double const t, double const dt) const override;

    PropertyDataType dValue(VariableArray const& variable_array,
                            Variable const variable,
                            ParameterLib::SpatialPosition const& /*pos*/,
                            double const /*t*/,
                            double const /*dt*/) const override;
 
private:
    StringOrVariable const independent_variable_;
    MathLib::PiecewiseLinearInterpolation const& curve_;
};
}  // namespace MaterialPropertyLib