struct ResCubeTextureData
{
    //
    enum { MAX_CUBE_FACE = 6 };

    union
    {
        struct
        {
            int toPositiveXImage;    //
            int toNegativeXImage;    //
            int toPositiveYImage;    //
            int toNegativeYImage;    //
            int toPositiveZImage;    //
            int toNegativeZImage;    //
        };

        int toImagesTables[ MAX_CUBE_FACE ]; //
    };
};
ResCubeTextureData foo;