FDMUtils.h

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/*************************************************************************
> File Name: FDMUtils.h
> Project Name: CubbyFlow
> Author: Chan-Ho Chris Ohk
> Purpose: Finite Difference Method util functions for CubbyFlow.
> Created Time: 2017/07/06
> Copyright (c) 2018, Chan-Ho Chris Ohk
*************************************************************************/
#ifndef CUBBYFLOW_FDM_UTILS_H
#define CUBBYFLOW_FDM_UTILS_H

#include <Core/Array/ArrayAccessor2.h>
#include <Core/Array/ArrayAccessor3.h>
#include <Core/Vector/Vector2.h>
#include <Core/Vector/Vector3.h>

namespace CubbyFlow
{
    Vector2D Gradient2(const ConstArrayAccessor2<double>& data,
        const Vector2D& gridSpacing, size_t i, size_t j);

    std::array<Vector2D, 2> Gradient2(const ConstArrayAccessor2<Vector2D>& data,
        const Vector2D& gridSpacing, size_t i, size_t j);

    Vector3D Gradient3(const ConstArrayAccessor3<double>& data,
        const Vector3D& gridSpacing, size_t i, size_t j, size_t k);

    std::array<Vector3D, 3> Gradient3(const ConstArrayAccessor3<Vector3D>& data,
        const Vector3D& gridSpacing, size_t i, size_t j, size_t k);

    double Laplacian2(const ConstArrayAccessor2<double>& data,
        const Vector2D& gridSpacing, size_t i, size_t j);

    Vector2D Laplacian2(const ConstArrayAccessor2<Vector2D>& data,
        const Vector2D& gridSpacing, size_t i, size_t j);

    double Laplacian3(const ConstArrayAccessor3<double>& data,
        const Vector3D& gridSpacing, size_t i, size_t j, size_t k);

    Vector3D Laplacian3(const ConstArrayAccessor3<Vector3D>& data,
        const Vector3D& gridSpacing, size_t i, size_t j, size_t k);
}

#endif