public void ReadVirtualCoilsSetting(string filepath, PublicVariate publicVariate)
{
StreamReader sr = new StreamReader(filepath, Encoding.UTF8);
_ = sr.ReadLine();
string line;
while ((line = sr.ReadLine()) != null)
{
string[] lines = line.Split(PublicVariate.Separator);
PublicVariate.VirtualCoil virtualCoil = new PublicVariate.VirtualCoil {
CrossName = lines[0],
LaneID = lines[1],
LaneType = lines[2],
Approach = lines[3]
};
if (lines.Length < 10 | (lines.Length - 4) / 2 != 0)
{
string message = string.Format("不能形成成闭合区域！\r\n{0}", line);
MessageBox.Show(message, "系统提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
return;
}
GraphicsPath myGraphicsPath = new GraphicsPath();
PointF[] pointF = new PointF[2];
for (int i = 4; i < lines.Length; i += 2)
{
pointF[i] = new PointF(float.Parse(lines[i]), float.Parse(lines[i + 1]));
}
myGraphicsPath.AddClosedCurve(pointF, 1);
publicVariate.VirtualCoils.Add(virtualCoil);
}
}
public void OpenDirectory(PublicVariate pv, ToolStripLabel label, TreeView treeView)
{
FolderBrowserDialog folderBrowserDialog = new FolderBrowserDialog {
ShowNewFolderButton = true,
Description = "请选择一个文件夹",
SelectedPath = Properties.Settings.Default.DirectoryPath
};
if (folderBrowserDialog.ShowDialog() == DialogResult.OK)
{
pv.filelist.Clear();
label.Text = $"1/{pv.filelist.Count}";
PaintTreeView(treeView, folderBrowserDialog.SelectedPath);
pv.DirectoryPath = folderBrowserDialog.SelectedPath;
}
Properties.Settings.Default.DirectoryPath = pv.DirectoryPath;
Properties.Settings.Default.Save();
}
public void StatisticTrafficFlow(string filepath, PublicVariate publicVariate)
{
/*
* 前提假设是：1、车辆总是会从一个进口道进入，从一个出口道出交叉口
* 2、同一时刻不会存在trackID相同的车辆
* step1：把line中的信息解析到track里
* step2：判断车辆是否在字典carList中，若在则读取车辆的trackID和time组成唯一ID，否则添加一条记录；
* step3：根据step2的ID，判断字典Cars里是否存在该条记录，若无，则新添加一条记录
* step4：根据step2的ID，然后通过遍历判断车辆是否经过某个线圈，并记录相关信息
* step5：若车辆从出口道出，则把该车辆的记录从carList中删除
*/
if (!File.Exists(filepath))
{
string message = string.Format("文件:{0}\t不存在", filepath);
MessageBox.Show(message, "系统提示");
return;
}
StreamReader sr = new StreamReader(filepath, Encoding.UTF8);
_ = sr.ReadLine();
string line;
while ((line = sr.ReadLine()) != null)
{
try {
// step1:
string[] lines = line.Split(PublicVariate.Separator);
long time = Convert.ToInt64(lines[1]);
string crossID = lines[2];
string trackID = lines[5];
string carType = lines[9];
float x = float.Parse(lines[17]);
float y = float.Parse(lines[18]);
// step2:
if (!publicVariate.tempCars.ContainsKey(trackID))
{
publicVariate.tempCars.Add(trackID, new Int64[] { time, time });
}
// 当超过1600毫秒以上时，同一个trackID认为代表不同车辆
if (Math.Abs(time - publicVariate.tempCars[trackID][1]) >= 1600)
{
publicVariate.tempCars[trackID] = new Int64[] { time, time };
}
publicVariate.tempCars[trackID][1] = time;
string car_key = trackID + "," + publicVariate.tempCars[trackID][0];
// step3:
if (!publicVariate.Cars.ContainsKey(car_key))
{
GetCar = new PublicVariate.Car {
ID = car_key,
CarType = carType,
ExTime = time
};
publicVariate.Cars.Add(car_key, GetCar);
}
// step4:判断在哪个线圈，假设数据是按照时间顺序从小到大排列的
PublicVariate.Car car = publicVariate.Cars[car_key];
string lantype = "道";
if (car.EnRoad != null & car.ExRoad != null)
{
continue;
}
else if (car.EnRoad == null)
{
lantype = "进口";
}
else if (car.ExRoad == null)
{
lantype = "出口";
}
foreach (PublicVariate.VirtualCoil virtualCoil in publicVariate.VirtualCoils)
{
if (crossID == virtualCoil.CrossName & virtualCoil.Approach.Contains(lantype) &
virtualCoil.Polygon.IsVisible(x, y))
{
car.ExTime = time;
car.ExRoad = virtualCoil.Approach;
car.ExLaneID = virtualCoil.LaneID;
break;
}
}
publicVariate.Cars[car_key] = car;
}
catch (Exception ex) {
MessageBox.Show(ex.Message);
continue;
}
}
sr.Dispose();
}
