BilinearInterpolator.hpp

// Reaktoro is a unified framework for modeling chemically reactive systems.
//
// Copyright (C) 2014-2018 Allan Leal
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this library. If not, see <http://www.gnu.org/licenses/>.
 
#pragma once
 
// C++ includes
#include <functional>
#include <iostream>
#include <vector>
 
namespace Reaktoro {
 
class BilinearInterpolator
{
public:
    BilinearInterpolator();
 
    BilinearInterpolator(
        const std::vector<double>& xcoordinates,
        const std::vector<double>& ycoordinates,
        const std::vector<double>& data);
 
    BilinearInterpolator(
        const std::vector<double>& xcoordinates,
        const std::vector<double>& ycoordinates,
        const std::function<double(double, double)>& function);
 
    auto setCoordinatesX(const std::vector<double>& xcoordinates) -> void;
 
    auto setCoordinatesY(const std::vector<double>& ycoordinates) -> void;
 
    auto setData(const std::vector<double>& data) -> void;
 
    auto xCoordinates() const -> const std::vector<double>&;
 
    auto yCoordinates() const -> const std::vector<double>&;
 
    auto data() const -> const std::vector<double>&;
 
    auto empty() const -> bool;
 
    auto operator()(double x, double y) const -> double;
 
private:
    std::vector<double> m_xcoordinates, m_ycoordinates;
 
    std::vector<double> m_data;
};
 
auto operator<<(std::ostream& out, const BilinearInterpolator& interpolator) -> std::ostream&;
 
} // namespace Reaktoro