/// <summary>
/// 最佳一条新的Link，并返回一条新的路线。
/// </summary>
/// <exception cref="ArgumentNullException">如果link为空引用，则跑出该异常。</exception>
public MetroPath Append(MetroLink link)
{
if (link == null)
{
throw new ArgumentNullException("link");
}
MetroPath newPath = new MetroPath();
newPath.Links.AddRange(this.Links);
newPath.Links.Add(link);
return(newPath);
}
/// <summary>
/// 绘制地铁站点间的线路。
/// </summary>
/// <param name="g">绘图图面。</param>
/// <param name="link">地铁站点间的线路。</param>
private void PaintLink(Graphics g, MetroLink link, bool IsCurLine)
{
Point pt1 = new Point(link.From.X, link.From.Y);
Point pt2 = new Point(link.To.X, link.To.Y);
Pen pen;
if (IsCurLine)
{
pen = new Pen(link.Line.Color, 9);
}
else
{
pen = new Pen(link.Line.Color, 7);
}
using (pen)
{
pen.LineJoin = LineJoin.Round;
if (link.Flag == 0)
{//单线
g.DrawLine(pen, pt1, pt2);
}
else if (link.Flag > 0)
{//双线并轨（如果是同向，则Flag分别为1和2，否则都为1）
float scale = (pen.Width / 2) / Distance(pt1, pt2);
float angle = (float)(Math.PI / 2);
if (link.Flag == 2)
{
angle *= -1;
}
//平移线段
var pt3 = Rotate(pt2, pt1, angle, scale);
var pt4 = Rotate(pt1, pt2, -angle, scale);
g.DrawLine(pen, pt3, pt4);
}
}
}
private void BtnAddNodeC_Click(object sender, EventArgs e)
{
try
{
bool IsDouLine1 = false;
bool IsDouLine2 = false;
MetroNode NewNode = new MetroNode();
MetroNode PreNode = new MetroNode();
MetroNode NexNode = new MetroNode();
String Prename = (CobPreNode.Text.ToString() == "海伦路" && CobNexNode.Text.ToString() == "宝山路") || (CobPreNode.Text.ToString() == "宝山路" && CobNexNode.Text.ToString() == "海伦路") ? "3" : CobPreNode.Text.ToString();
String Nexname = (CobPreNode.Text.ToString() == "海伦路" && CobNexNode.Text.ToString() == "宝山路") || (CobPreNode.Text.ToString() == "宝山路" && CobNexNode.Text.ToString() == "海伦路") ? "2" : CobNexNode.Text.ToString();
foreach (var node in metroGraphView1.Graph.Nodes)
{
if (node.Name == Prename)
{
PreNode = node;
}
if (node.Name == Nexname)
{
NexNode = node;
}
}
NewNode.Name = this.TxtNodeName.Text.ToString();
NewNode.X = (CobPreNode.Text.ToString() == "海伦路" && CobNexNode.Text.ToString() == "宝山路") || (CobPreNode.Text.ToString() == "宝山路" && CobNexNode.Text.ToString() == "海伦路") ? 2033 : int.Parse(this.TxtNodeX.Text.ToString());
NewNode.Y = (CobPreNode.Text.ToString() == "海伦路" && CobNexNode.Text.ToString() == "宝山路") || (CobPreNode.Text.ToString() == "宝山路" && CobNexNode.Text.ToString() == "海伦路") ? 750 : int.Parse(this.TxtNodeY.Text.ToString());
if ((Math.Abs(NewNode.X - PreNode.X) > 200 || Math.Abs(NewNode.Y - PreNode.Y) > 200 || Math.Abs(NewNode.X - NexNode.X) > 200 || Math.Abs(NewNode.Y - NexNode.Y) > 200) && (PreNode.Name != "" && NexNode.Name != ""))
{
MessageBox.Show("距离太远了哦，请重新设定坐标(´▽`ʃ♡ƪ)");
this.TxtNodeX.Text = "";
this.TxtNodeY.Text = "";
return;
}
for (int i = 0; i < PreNode.Links.Count; i++)
{
if (PreNode.Links[i].Flag == 1 && PreNode.Links.Count > 3)
{
IsDouLine1 = true;
}
}
for (int i = 0; i < NexNode.Links.Count; i++)
{
if (NexNode.Links[i].Flag == 1 && NexNode.Links.Count > 3)
{
IsDouLine2 = true;
}
}
if (!IsDouLine2 || !IsDouLine1)
{
MetroLine NewLine = new MetroLine();
foreach (var line in metroGraphView1.Graph.Lines)
{
if (line.Name == CobNodeLine.Text.ToString())
{
NewLine = line;
}
}
if (!((CobPreNode.Text == "" || CobPreNode.Text == null) && NexNode.Links.Count <= 1))
{
MetroLink NewLink = new MetroLink(NewLine, NewNode, PreNode);
NewLink.Weight = 3;
NewNode.Links.Add(NewLink);
NewLink.Flag = 0;
}
if (!((CobNexNode.Text == "" || CobNexNode.Text == null) && PreNode.Links.Count <= 1))
{
MetroLink NewLink = new MetroLink(NewLine, NewNode, NexNode);
NewLink.Flag = 0;
NewLink.Weight = 3;
NewNode.Links.Add(NewLink);
}
if (!((CobPreNode.Text == "" || CobPreNode.Text == null) && NexNode.Links.Count <= 1))
{
for (int i = 0; i < PreNode.Links.Count; i++)
{
if (PreNode.Links[i].To.Name == NexNode.Name)
{
PreNode.Links.RemoveAt(i);
}
}
}
PreNode.Links.Add(new MetroLink(NewLine, PreNode, NewNode));
if (!((CobNexNode.Text == "" || CobNexNode.Text == null) && PreNode.Links.Count <= 1))
{
for (int i = 0; i < NexNode.Links.Count; i++)
{
if (NexNode.Links[i].To.Name == PreNode.Name)
{
NexNode.Links.RemoveAt(i);
}
}
}
NexNode.Links.Add(new MetroLink(NewLine, NexNode, NewNode));
metroGraphView1.Graph.Nodes.Add(NewNode);
}
else
{
for (int i = 0; i < PreNode.Links.Count; i++)
{
if (PreNode.Links[i].To.Name == NexNode.Name)
{
MetroLine NewLine = new MetroLine();
NewLine = PreNode.Links[i].Line;
MetroLink NewLink = new MetroLink(NewLine, PreNode, NewNode);
NewLink.Flag = PreNode.Links[i].Flag;
MetroLink SNewLink = new MetroLink(NewLine, NewNode, NexNode);
SNewLink.Flag = PreNode.Links[i].Flag;
SNewLink.Weight = 3;
NewNode.Links.Add(SNewLink);
PreNode.Links.RemoveAt(i);
PreNode.Links.Add(NewLink);
}
}
for (int i = 0; i < NexNode.Links.Count; i++)
{
if (NexNode.Links[i].To.Name == PreNode.Name)
{
MetroLine NewLine = new MetroLine();
NewLine = NexNode.Links[i].Line;
MetroLink NewLink = new MetroLink(NewLine, NexNode, NewNode);
NewLink.Flag = NexNode.Links[i].Flag;
MetroLink SNewLink = new MetroLink(NewLine, NewNode, PreNode);
SNewLink.Flag = NexNode.Links[i].Flag;
SNewLink.Weight = 3;
NewNode.Links.Add(SNewLink);
NexNode.Links.RemoveAt(i);
NexNode.Links.Add(NewLink);
}
}
metroGraphView1.Graph.Nodes.Add(NewNode);
}
//metroGraphView1.SaveToFile(Application.StartupPath + "\\MetroGraph.xml");
metroGraphView1.Invalidate();
this.CobPreNode.Text = "";
this.CobNexNode.Text = "";
this.TxtNodeName.Text = "";
this.TxtNodeX.Text = "";
this.TxtNodeY.Text = "";
this.TxtLineName.Text = "";
this.CobNodeLine.Text = "";
this.colorDialog1.Reset();
this.LabNexXY.Text = "";
this.LabPreXY.Text = "";
}
catch
{
MessageBox.Show("请检查是否有误哦(✿◕‿◕✿)");
return;
}
this.PnlAddNode.Visible = false;
this.BtnMetroHelp.Visible = true;
this.BtnAdd.Visible = true;
this.BtnSave.Visible = true;
}