public Point <T> Offset(PointOffset offset, T count)
{
return(offset switch
{
PointOffset.None => this,
PointOffset.Up => this - new Point <T>(0, count),
PointOffset.Down => this + new Point <T>(0, count),
PointOffset.Left => this - new Point <T>(count, 0),
PointOffset.Right => this + new Point <T>(count, 0),
PointOffset.UpLeft => this - new Point <T>(count, count),
PointOffset.DownLeft => this + new Point <T>(MathUnsafe.Negative(count), count),
PointOffset.UpRight => this - new Point <T>(MathUnsafe.Negative(count), count),
PointOffset.DownRight => this + new Point <T>(count, count),
_ => throw new ArgumentOutOfRangeException(nameof(offset), offset, null)
});
