/// <summary>
/// 获取哈希值
/// </summary>
/// <returns>2D 区间的哈希值。</returns>
public override int GetHashCode()
{
var hash1 = _x.GetHashCode();
var hash2 = _y.GetHashCode();
return(31 * hash1 + hash2);
}
/// <summary>
/// 获取哈希值
/// </summary>
/// <returns>2D 区间的哈希值。</returns>
public override int GetHashCode()
{
var hash1 = _x.GetHashCode();
var hash2 = _y.GetHashCode();
return(31 * hash1 + hash2);
}