MapUtil.GetUpperBorder C# (CSharp) Method

    public static int GetUpperBorder(float h)
    {
        return Mathf.CeilToInt (h);
    }

    public ICollection <Vec2> GetTilesToLoad(float x, float y, float w, float h, int m, int n)
    {
        List <Vec2> tiles = new List <Vec2> ();

        //clamp the position
        int left  = MapUtil.GetLeftBorder(Mathf.Clamp(x, 0, w));
        int lower = MapUtil.GetLowerBorder(Mathf.Clamp(y, 0, h));
        int right = MapUtil.GetRightBorder(Mathf.Clamp(w, x, m));
        int upper = MapUtil.GetUpperBorder(Mathf.Clamp(h, y, n));

        for (int i = left; i < right; i++)
        {
            for (int j = lower; j < upper; j++)
            {
                tiles.Add(new Vec2(i, j));
            }
        }

        return(tiles);
    }