//加入连边
public bool AddEdge(IfCoreNode curNode, IfCoreNode tarNode, IfCoreEdge newEdge)
{
try
{
//连边的头指针指向起节点
newEdge.Start = curNode;
//连边的尾指针指向目标节点
newEdge.End = tarNode;
}
catch (Exception e)
{//如果连边和起始/目标节点类型不匹配则会报错
MessageBox.Show(e.Message, "警告", MessageBoxButtons.OK);
return(false);
}
//将新连边加入起始节点的outbound
if (curNode.AddEdge(newEdge) == false)
{
return(false);
}
//将新连边加入目标节点的Inbound
if (tarNode.RegisterInbound(newEdge) == false)
{
return(false);
}
//全部完成后将连边加入网络连边列表
EdgeList.Add(newEdge);
return(true);
}
//移除连边
public bool RemoveEdge(IfCoreNode curNode, IfCoreNode tarNode)
{
IfCoreEdge curEdge = null;
//从起始节点的出边中遍历
foreach (IfCoreEdge edge in curNode.OutBound)
{ //查找终止节点编号和目标节点编号一致的连边
if (edge.End.Number == tarNode.Number)
{ //找到则返回，本图数据库不支持两点间多连边
curEdge = edge;
break;
}
}
if (curEdge == null)
{//没找到直接返回
return(false);
}
//起始节点Outbound中移除连边
curNode.RemoveEdge(curEdge);
//从终止节点InBound中注销连边
tarNode.UnRegisterInbound(curEdge);
//全部完成后，从总连边列表中移除该边
EdgeList.Remove(curEdge);
return(true);
}
//删除节点
public bool RemoveNode(IfCoreNode curNode)
{
//清除节点所有连边
ClearUnusedEdge(curNode.ClearEdge());
//从节点列表中移除节点
NodeList.Remove(curNode);
return(true);
}
//加入节点
public bool AddNode(IfCoreNode newNode)
{
//节点加入节点列表
NodeList.Add(newNode);
return(true);
}
