/// <summary>
/// 合并时段。如果有相交的时段，则合并。
/// </summary>
/// <param name="spans">时段集合</param>
/// <returns></returns>
public static List <BufferedTimePeriod> Merge(List <BufferedTimePeriod> spans)
{
List <BufferedTimePeriod> outs = new List <BufferedTimePeriod>();
spans.Sort();
BufferedTimePeriod last = null;
foreach (var item in spans)
{
if (last == null)
{
last = item;
continue;
}
if (last.BufferedContains(item.Start))
{
last = BufferedTimePeriod.Merge(last, item);
}
else
{
outs.Add(last);
last = null;
}
}
if (last != null)
{
outs.Add(last);
}
return(outs);
}
/// <summary>
/// 返回结束时间最大的区段
/// </summary>
/// <param name="prevObj">时段1</param>
/// <param name="other">时段2</param>
/// <returns></returns>
public static BufferedTimePeriod Max(BufferedTimePeriod first, BufferedTimePeriod other)
{
if (first.End > other.End)
{
return(first);
}
return(other);
}
/// <summary>
/// 返回起始时间最小的区段
/// </summary>
/// <param name="prevObj">时段1</param>
/// <param name="other">时段2</param>
/// <returns></returns>
public static BufferedTimePeriod Min(BufferedTimePeriod first, BufferedTimePeriod other)
{
if (first.Start < other.Start)
{
return(first);
}
return(other);
}
/// <summary>
/// 合并两个时间段，不管中间是否具有间隙。
/// </summary>
/// <param name="prevObj">第一个时段</param>
/// <param name="other">第二个时段</param>
/// <returns></returns>
public static BufferedTimePeriod Merge(BufferedTimePeriod first, BufferedTimePeriod other)
{
Time min = Time.Min(first.Start, other.Start);
Time max = Time.Max(first.End, other.End);
BufferedTimePeriod minPeriod = Min(first, other);
BufferedTimePeriod maxPeriod = Max(first, other);
return(new BufferedTimePeriod(min, max, minPeriod.StartBuffer, maxPeriod.EndBuffer));
}
/// <summary>
/// 时段构造函数
/// </summary>
/// <param name="timePeriod"></param>
public BufferedTimePeriod(BufferedTimePeriod timePeriod) : this(timePeriod.Start, timePeriod.End)
{
this.StartBuffer = timePeriod.StartBuffer;
this.EndBuffer = timePeriod.EndBuffer;
}
/// <summary>
/// 合并这两个时段
/// </summary>
/// <param name="other">另一个时段</param>
/// <returns></returns>
public BufferedTimePeriod Merge(BufferedTimePeriod other)
{
return(Merge(this, other));
}
/// <summary>
/// 起始时间在前的为小。
/// 返回值的含义如下：值含义小于零此对象小于 other 参数。零此对象等于 other。大于零此对象大于 other。
/// </summary>
/// <param name="other"></param>
/// <returns></returns>
public int CompareTo(BufferedTimePeriod other)
{
return((int)this.Start.CompareTo(other.Start));
}