/// <summary> 用桥梁或隧道的结构物来剪切对应的区间值 </summary>
/// <param name="blockStation">桥梁或者隧道等结构物的起始（末端）桩号</param>
public virtual void Cut(double blockStation)
{
if (FrontValue.EdgeStation < blockStation)
{
FrontValue.CutByBlock(blockStation);
FrontValue.EdgeStation = blockStation;
}
else if (BackValue.EdgeStation > blockStation)
{
BackValue.CutByBlock(blockStation);
BackValue.EdgeStation = blockStation;
}
else
{
throw new InvalidOperationException("用来剪切的桥梁或隧道等结构物桩号位于区间之外");
}
}
/// <summary> 返回此区间的前半段与后半段合并后的数据。此方法改变本实例的<seealso cref="BackValue"/>属性，
/// 此后，<seealso cref="FrontValue"/> 中除了其 <seealso cref="HalfValue.EdgeStation"/> 属性外，其他的属性均无效。 </summary>
/// <returns></returns>
public HalfValue UnionBackFront()
{
BackValue.Merge(FrontValue);
return(BackValue);
}
