/// <summary>
/// �������g�̕�����Ԃ�
/// </summary>
/// <returns>�������g�̕���</returns>
public object Clone()
{
Surface clone = new Surface(_w, _h);
clone.copy(0,0, this, 0, 0, _w, _h);
return clone;
}
/// <summary>
/// �������g�̕�����Ԃ�
/// </summary>
/// <returns>�������g�̕���</returns>
public object Clone()
{
Surface clone = new Surface(_w, _h);
clone.copy(0,0, this, 0, 0, _w, _h);
return clone;
}