历史轨迹回放

在网上搜了很久都没有找到合适的帖子.

所以做这个花了很多时间精力,但总算解决了.

本来是想用多线程,委托之类的,但是由于需要刷新axMapControl,也就是需要传参数,搞的很狼狈(有时间再研究),还不知怎样通过自定义的多线程解决:在新创建的线程中对从数据库中查询出的结果(包含经纬度信息)进行处理:从第二个有效点(例如经纬度数值为零或负的无效)开始,跟其前一个有效点构成"线",加到axMapControl中并显示出来,以此类推,画出轨迹.

最终得知用Timer控件比较好,很容易的解决了.代码如下:

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.IO;using System.Threading;using ESRI.ArcGIS.Geometry;using ESRI.ArcGIS.Carto;using ESRI.ArcGIS.Display;using ESRI.ArcGIS.esriSystem;using ESRI.ArcGIS.Controls;using Homcom.GpsSpaceManager.DAL;using Homcom.GpsSpaceManager.PublicInterface;using Homcom.Utility.ArcEngine;using Homcom.Utility;using Homcom.GpsSpaceManager.BLL;using NHibernate;using DevComponents.DotNetBar;namespace Homcom.GpsSpaceManager{ public partial class frmTrackReplay : DevComponents.DotNetBar.Office2007Form { public frmTrackReplay() { InitializeComponent(); } static string[] _vehicleTypes = new string[] { "轿车", "面包车", "卡车", "大卡车" }; private static IList<TServPerClass> deprtsAll = new List<TServPerClass>();//由于是递归,故用全局变量,多处都要用到,所以用来储存结果时要防止产生混乱 static readonly log4net.ILog _logger = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType); UtilityPrint _utilityPrint; static IList<WgPositionHist> phs = new List<WgPositionHist>(); ESRI.ArcGIS.Geometry.IPoint ptLast = new PointClass();//上一个有效点,用作IPointCollection的起点,即IPolyLine的起点 IElement element;//车辆 IElement element2;//标注 static int count = 0;//当前为第几条历史记录 static ISimpleLineSymbol lineSymbol = new SimpleLineSymbolClass();//,作为全局变量,不必每次tick事件都创建这些 static IMarkerSymbol vehicleMark;//作为全局变量,不必每次tick事件都创建这些 static WgCar car = new WgCar(); static WgDriver driver = new WgDriver(); UserSettingsInfo usi = UserSettingsInfo.Instance; /// <summary> /// 车辆Element /// 一辆车，一个Element /// </summary> Dictionary<long, IElement> _vehicleElements = new Dictionary<long, IElement>(); /// <summary> /// 车辆符号模板 /// 一类车辆一个符号模板 /// </summary> Dictionary<string, ISymbol> _vehicleTemplateSymbols = new Dictionary<string, ISymbol>(); private void frmTrackReplay_Load(object sender, EventArgs e) { try { //填写部门名称 ISession sessionEst = RuntimeInfo.Instance.NHibernateHelperEst.OpenSession(); IList<TServPerClass> dprt2 = sessionEst.CreateQuery(string.Format("select from TServPerClass u where u.FldId='{0}'", RuntimeInfo.Instance.DepartmentId)).List<TServPerClass>(); if (dprt2.Count == 1) deprtsAll.Add(dprt2[0]); getDeprts(RuntimeInfo.Instance.DepartmentId); for (int i = 0; i < deprtsAll.Count; i++) { cbDept.Items.Add(deprtsAll[i].FldName); } if (cbDept.Items.Count != 0) cbDept.SelectedIndex = 0; cbSpeed.SelectedIndex = 0; cbDept.DropDownStyle = ComboBoxStyle.DropDownList; cbCarCode.DropDownStyle = ComboBoxStyle.DropDownList; cbSpeed.DropDownStyle = ComboBoxStyle.DropDownList; btnPause.Enabled = false; btnStop.Enabled = false; initListView(); } catch(Exception ex) { _logger.Error("轨迹回放控件初始化错误!", ex); } // 加载预定的车辆符号 try { string styleFile = Application.StartupPath + "//Template//VehiSym//" + "car.ServerStyle"; axSymbologyControl1.LoadStyleFile(styleFile); ISymbologyStyleClass scc = axSymbologyControl1.GetStyleClass(axSymbologyControl1.StyleClass); for (int i = 0; i < _vehicleTypes.Length; i++) { string file = Application.StartupPath + "//Template//VehiSym//" + _vehicleTypes[i] + ".sym"; if (File.Exists(file)) { VehiclSymbolInfo symInfo = (VehiclSymbolInfo)XmlSerializerUtility.LoadFromFile(file, typeof(VehiclSymbolInfo)); IStyleGalleryItem sgi = scc.GetItem(symInfo.ID - 1); ISymbol symbol = sgi.Item as ISymbol; _vehicleTemplateSymbols.Add(_vehicleTypes[i], symbol); } } } catch (Exception ex) { _logger.Error("加载车辆类型符号发生异常;", ex); } // 加载电子地图 try { _utilityPrint = new UtilityPrint(); if (axMapControl1.CheckMxFile(RuntimeInfo.Instance.MxdFile)) axMapControl1.LoadMxFile(RuntimeInfo.Instance.MxdFile); _utilityPrint.Init(axMapControl1.ActiveView); } catch (Exception ex) { _logger.Error("加载电子地图发生异常:", ex); } } //为ListView添加列 private void initListView() { ColumnHeader ch1 = new ColumnHeader(); ch1.Name = "Dept"; ch1.Text = "所属部门"; ch1.Width = 100; listViewEx1.Columns.Add(ch1); ColumnHeader ch2 = new ColumnHeader(); ch2.Name = "Type"; ch2.Text = "车辆类型"; ch2.Width = 70; listViewEx1.Columns.Add(ch2); ColumnHeader ch3 = new ColumnHeader(); ch3.Name = "CarCode"; ch3.Text = "车牌"; ch3.Width = 70; listViewEx1.Columns.Add(ch3); ColumnHeader ch4 = new ColumnHeader(); ch4.Name = "Driver"; ch4.Text = "司机"; ch4.Width = 60; listViewEx1.Columns.Add(ch4); ColumnHeader ch5 = new ColumnHeader(); ch5.Name = "Time"; ch5.Text = "更新时间"; ch5.Width = 120; listViewEx1.Columns.Add(ch5); ColumnHeader ch6 = new ColumnHeader(); ch6.Name = "Longitude"; ch6.Text = "经度"; ch6.Width = 70; listViewEx1.Columns.Add(ch6); ColumnHeader ch7 = new ColumnHeader(); ch7.Name = "Latitude"; ch7.Text = "纬度"; ch7.Width = 70; listViewEx1.Columns.Add(ch7); ColumnHeader ch8 = new ColumnHeader(); ch8.Name = "Position"; ch8.Text = "定位"; ch8.Width = 40; listViewEx1.Columns.Add(ch8); ColumnHeader ch9 = new ColumnHeader(); ch9.Name = "ACC"; ch9.Text = "ACC"; ch9.Width = 40; listViewEx1.Columns.Add(ch9); ColumnHeader ch10 = new ColumnHeader(); ch10.Name = "Direction"; ch10.Text = "方向"; ch10.Width = 40; listViewEx1.Columns.Add(ch10); ColumnHeader ch11 = new ColumnHeader(); ch11.Name = "Speed"; ch11.Text = "速度"; ch11.Width = 40; listViewEx1.Columns.Add(ch11); ColumnHeader ch12 = new ColumnHeader(); ch12.Name = "Alarm"; ch12.Text = "报警"; ch12.Width = 40; listViewEx1.Columns.Add(ch12); } /// <summary> /// 递归获取相应部门ID的子部门 /// </summary> /// <param name="departmentID">部门ID</param> private void getDeprts(int departmentID) { ISession sessionEst = RuntimeInfo.Instance.NHibernateHelperEst.OpenSession(); string str = "select from TServPerClass s where s.FldParentClass = :ui"; IList<TServPerClass> deprts = sessionEst.CreateQuery(str).SetInt32("ui", departmentID).List<TServPerClass>(); for (int i = 0; i < deprts.Count; i++) { deprtsAll.Add(deprts[i]); getDeprts(deprts[i].FldId); } } private void cbDept_SelectedIndexChanged(object sender, EventArgs e) { try { ISession sessionEst = RuntimeInfo.Instance.NHibernateHelperEst.OpenSession(); ISession sessionGps = RuntimeInfo.Instance.NHibernateHelperGps.OpenSession(); cbCarCode.Items.Clear(); int id = 0; if (cbDept.Text == "所有相关部门") { id = RuntimeInfo.Instance.DepartmentId; } else { string strSql = "select from TServPerClass s where s.FldName = :ui"; IList<TServPerClass> deprts = sessionEst.CreateQuery(strSql).SetString("ui", cbDept.Text).List<TServPerClass>(); if (deprts.Count != 1) { return; } id = deprts[0].FldId; } deprtsAll.Clear(); IList<TServPerClass> dprt2 = sessionEst.CreateQuery(string.Format("select from TServPerClass u where u.FldId='{0}'", id)).List<TServPerClass>(); if (dprt2.Count == 1) deprtsAll.Add(dprt2[0]); //获取子部门 getDeprts(id); for (int i = 0; i < deprtsAll.Count; i++) { IList<WgCar> cars1 = sessionGps.CreateQuery("select from WgCar c where c.DepartmentchId = :ui").SetInt32("ui", deprtsAll[i].FldId).List<WgCar>(); foreach (WgCar car in cars1) cbCarCode.Items.Add(car.CarCode); } if (cbCarCode.Items.Count != 0) cbCarCode.SelectedIndex = 0; } catch(Exception ex) { _logger.Error("根据部门名称获取车辆出错!", ex); } } private void btnAction_Click(object sender, EventArgs e) { try { string carCode = cbCarCode.Text; byte hourStart = 0; byte hourEnd = 0; try { hourStart = byte.Parse(tbHourStart.Text.Trim()); hourEnd = byte.Parse(tbHourEnd.Text.Trim()); if (hourStart > 24 || hourEnd > 24) throw new Exception("时刻的数值超出范围!"); } catch (Exception ex) { _logger.Error("时刻的数值不符合规定!", ex); MessageBoxEx.Show("时刻的数值不符合规定!", "错误信息", MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1); return; } DateTime timeStart = new DateTime(); timeStart = dtpBegin.Value; timeStart.AddHours(hourStart); DateTime timeEnd = new DateTime(); timeEnd = dtpEnd.Value; timeEnd.AddHours(hourEnd); getData(carCode, timeStart, timeEnd); if (phs == null) return; if (phs.Count == 0) { MessageBoxEx.Show("没有符合条件的数据!", "消息", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1); return; } axMapControl1.ActiveView.GraphicsContainer.DeleteAllElements(); count = 0; ptLast = null; element = null; element2 = null; listViewEx1.Items.Clear(); cbDept.Enabled = false; cbCarCode.Enabled = false; btnAction.Enabled = false; btnPause.Text = "暂 停"; btnPause.Enabled = true; btnStop.Enabled = true; dtpBegin.Enabled = false; dtpEnd.Enabled = false; tbHourEnd.Enabled = false; tbHourStart.Enabled = false; slider1.Maximum = phs.Count; slider1.Value = 1; timer1.Start(); } catch (Exception ex) { _logger.Error("查询过程出错!", ex); MessageBoxEx.Show("查询过程出错!", "错误信息", MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1); } } /// <summary> /// 根据三个参数获取车辆信息,轨迹历史记录等数据 /// </summary> /// <param name="carCode"></param> /// <param name="timeStart"></param> /// <param name="timeEnd"></param> /// <returns></returns> private void getData(string carCode, DateTime timeStart, DateTime timeEnd) { try { string carStr = string.Format("select from WgCar c where c.CarCode='{0}'", carCode); IList<WgCar> cars = RuntimeInfo.Instance.NHibernateHelperGps.OpenSession().CreateQuery(carStr).List<WgCar>(); if (cars.Count == 1) { car = cars[0]; string relationStr = string.Format("select from WgCarDriverDeliveryman r where r.CarId={0}", cars[0].Carid); IList<WgCarDriverDeliveryman> relations = RuntimeInfo.Instance.NHibernateHelperGps.OpenSession().CreateQuery(relationStr).List<WgCarDriverDeliveryman>(); if (relations.Count >= 1) { string driverStr = string.Format("select from WgDriver d where d.DriverId={0}", relations[0].DriverId); IList<WgDriver> drivers = RuntimeInfo.Instance.NHibernateHelperGps.OpenSession().CreateQuery(driverStr).List<WgDriver>(); if (drivers.Count == 1) { driver = drivers[0]; } } string phsStr = string.Format("select from WgPositionHist p where p.DeviceId={0} and p.PositionTime>'{1}' and p.PositionTime<'{2}'", cars[0].DeviceId, timeStart, timeEnd); phs = RuntimeInfo.Instance.NHibernateHelperGps.OpenSession().CreateQuery(phsStr).List<WgPositionHist>(); } varInit(); } catch (Exception ex) { } } private void btnPause_Click(object sender, EventArgs e) { if (btnPause.Text == "暂 停") { timer1.Stop(); btnPause.Text = "继 续"; } else { timer1.Start(); btnPause.Text = "暂 停"; } } private void btnStop_Click(object sender, EventArgs e) { count = 0; ptLast = null; element = null; element2 = null; timer1.Stop(); enableTrue(); btnAction.Enabled = true; btnPause.Enabled = false; btnStop.Enabled = false; listViewEx1.Items.Clear(); } private void btnExit_Click(object sender, EventArgs e) { this.Close(); } private void timer1_Tick(object sender, EventArgs e) { try { if (!(count < phs.Count)) { timer1.Stop(); enableTrue(); return; } slider1.Value++; int i = count; WgPositionHist ph = phs[i]; if (ph.Longitude <= 0 || ph.Latitude <= 0) return; count++; updateListView(ph); IGraphicsContainer graphicsContainer = (IGraphicsContainer)axMapControl1.Map; // Explicit Cast if (element != null)//清除旧的车辆符号 graphicsContainer.DeleteElement(element); if (element2 != null)//清除旧的车辆标签 graphicsContainer.DeleteElement(element2); ESRI.ArcGIS.Geometry.IPoint pPoint = new PointClass(); pPoint.PutCoords(Convert.ToDouble(ph.Longitude), Convert.ToDouble(ph.Latitude)); IEnvelope envelop = new EnvelopeClass(); envelop = axMapControl1.ActiveView.Extent; if (!(envelop.XMax > pPoint.X && envelop.XMin < pPoint.X && envelop.YMax > pPoint.Y && envelop.YMin < pPoint.Y)) { envelop.CenterAt(pPoint); axMapControl1.ActiveView.Extent = envelop; } //添加轨迹 ILineElement le = new LineElementClass(); le.Symbol = lineSymbol; IPointCollection pc = new PolylineClass(); object missing = Type.Missing; pc.AddPoint(ptLast, ref missing, ref missing);//上次的有效的点~ pc.AddPoint(pPoint, ref missing, ref missing); ptLast.PutCoords(pPoint.X, pPoint.Y); IElement pe = le as IElement; pe.Geometry = pc as IPolyline; axMapControl1.ActiveView.GraphicsContainer.AddElement(pe, 0); //更新车辆符号的位置 vehicleMark.Angle = 0 - ph.Azimuth; IMarkerElement markerElement = new MarkerElementClass(); markerElement.Symbol = vehicleMark; element = (IElement)markerElement; // Explicit Cast element.Geometry = pPoint; graphicsContainer.AddElement(element, 0); // 更新车辆标签 long id = ph.DeviceId; if (usi.VehicleLabelType == VehicleLabelType.VehicleLicense) labelCar(id, cbCarCode.Text); else if (usi.VehicleLabelType == VehicleLabelType.Driver) labelCar(id, BllVehicle.GetDriverByCarId(id)); else if (usi.VehicleLabelType == VehicleLabelType.Department) labelCar(id, BllVehicle.GetDepartmentByCarId(id)); axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null); } catch (Exception ex) { _logger.Error("回放线程出错!", ex); } } /// <summary> /// 根据记录,更新ListView中的内容 /// </summary> /// <param name="ph"></param> private void updateListView(WgPositionHist ph) { char[] status = new char[14]; string statu = Convert.ToString(ph.Status1, 2); for (int m = 0; m < 14; m++) { if (m < statu.Length) status[m] = statu[m]; else status[m] = '0'; } string position = status[8].ToString(); string acc = status[13].ToString(); string alarm = status[9].ToString(); if (ptLast == null)//说明为第一个有效点 { ptLast = new PointClass(); ptLast.PutCoords(Convert.ToDouble(ph.Longitude), Convert.ToDouble(ph.Latitude)); listViewEx1.Items.Clear(); ListViewItem lvi = new ListViewItem(cbDept.Text); lvi.SubItems.Add(car.CarTypeName); lvi.SubItems.Add(cbCarCode.Text); lvi.SubItems.Add(driver.Name); lvi.SubItems.Add(ph.PositionTime.ToString()); lvi.SubItems.Add(ph.Longitude.ToString("#.######")); lvi.SubItems.Add(ph.Latitude.ToString("#.######")); lvi.SubItems.Add(position); lvi.SubItems.Add(acc); lvi.SubItems.Add(ph.Azimuth.ToString("#")); lvi.SubItems.Add(ph.Speed.ToString("#.##")); lvi.SubItems.Add(alarm); listViewEx1.Items.Add(lvi); } else { listViewEx1.Items[0].SubItems[4].Text = ph.PositionTime.ToString(); listViewEx1.Items[0].SubItems[5].Text = ph.Longitude.ToString("#.######"); listViewEx1.Items[0].SubItems[6].Text = ph.Latitude.ToString("#.######"); listViewEx1.Items[0].SubItems[7].Text = position; listViewEx1.Items[0].SubItems[8].Text = acc; listViewEx1.Items[0].SubItems[9].Text = ph.Azimuth.ToString("#"); listViewEx1.Items[0].SubItems[10].Text = ph.Speed.ToString("#.##"); listViewEx1.Items[0].SubItems[11].Text = alarm; } } //在查询到车型等信息后对某些全局变量进行赋值 private void varInit() { //轨迹设置 IRgbColor colorLine = new RgbColor(); colorLine.Blue = 255; colorLine.Red = 50; colorLine.Transparency = 255; //线样式 lineSymbol.Color = colorLine; lineSymbol.Style = esriSimpleLineStyle.esriSLSInsideFrame; lineSymbol.Width = 3; //车辆符号 IRgbColor colorMark = new RgbColor(); colorMark.Green = 255; colorMark.Transparency = 255; ISymbol symbolTemplate = _vehicleTemplateSymbols[car.CarTypeName]; IClone clone = symbolTemplate as IClone; ISymbol symbol = clone.Clone() as ISymbol; vehicleMark = symbol as IMarkerSymbol; vehicleMark.Color = colorMark; } private void slider1_Click(object sender, EventArgs e) { count = slider1.Value; ptLast = null; } private void cbSpeed_SelectedIndexChanged(object sender, EventArgs e) { byte speed = Byte.Parse(cbSpeed.Text); timer1.Interval = 1000 / (speed * speed); } //设置控件的属性 private void enableTrue() { btnAction.Enabled = true; btnPause.Text = "暂 停"; btnAction.Enabled = true; dtpBegin.Enabled = true; dtpEnd.Enabled = true; tbHourEnd.Enabled = true; tbHourStart.Enabled = true; cbDept.Enabled = true; cbCarCode.Enabled = true; slider1.Value = 1; } /// <summary> /// 根据车辆ID和标注文字,将标注添加到MapControl中 /// </summary> /// <param name="carId"></param> /// <param name="label"></param> void labelCar(long carId, string label) { IGraphicsContainer graphicsContainer = (IGraphicsContainer)axMapControl1.Map; // Explicit Cast UserSettingsInfo usi = UserSettingsInfo.Instance; IPoint pt = element.Geometry as IPoint; ITextElement txtEle = CreateTextElement(label, usi.VehicleLabelFontName, usi.VehicleLabelFontSize, usi.VehicleLabelFontStyle, usi.VehicleLabelColor); element2 = txtEle as IElement; // 计算标签的位置 element2.Geometry = calcLabelPos(pt); graphicsContainer.AddElement(element2, 0);//添加.旧的标签在Timer_Tick中已经清除 } /// <summary> /// 创建一个TextElement /// </summary> /// <param name="text"></param> /// <returns></returns> ITextElement CreateTextElement(string text, string fontName, float fontSize, FontStyle fontStyle, Color color) { //创建一个TextSymbol ITextSymbol txtSymbol = new TextSymbolClass(); //设置字体 Font dispFont = new Font(fontName, fontSize, fontStyle); txtSymbol.Font = (stdole.IFontDisp)ESRI.ArcGIS.ADF.COMSupport.OLE.GetIFontDispFromFont(dispFont); //设置颜色属性 txtSymbol.Color = AeColorConverter.ColorToIColor(color); //颜色 //创建一个TextElement ITextElement txtElement = new TextElementClass(); txtElement.Symbol = txtSymbol; txtElement.Text = text; return txtElement; } // 计算Label的位置 // TODO： 根据符号的方向计算 IPoint calcLabelPos(IPoint org) { if (UserSettingsInfo.Instance.VehicleLabelPostionType == VehicleLabelPostionType.Center) return org; IActiveView activeView = axMapControl1.ActiveView; double dist = activeView.ScreenDisplay.DisplayTransformation.FromPoints(8); IPoint pt = new PointClass(); pt.PutCoords(org.X, org.Y); switch (UserSettingsInfo.Instance.VehicleLabelPostionType) { case VehicleLabelPostionType.UpperLeft: pt.X -= dist; pt.Y -= dist; break; case VehicleLabelPostionType.UpperRight: pt.X += dist; pt.Y -= dist; break; case VehicleLabelPostionType.BottomRight: pt.X += dist; pt.Y += dist; break; case VehicleLabelPostionType.BottomLeft: pt.X -= dist; pt.Y += dist; break; } return pt; } //当放大或缩小时,此事件不会自动刷新MapControl,导致轨迹与地图不吻合,所以人工刷新 private void axMapControl1_OnExtentUpdated(object sender, IMapControlEvents2_OnExtentUpdatedEvent e) { axMapControl1.Refresh(); } //同上 private void axMapControl1_OnFullExtentUpdated(object sender, IMapControlEvents2_OnFullExtentUpdatedEvent e) { axMapControl1.Refresh(); } } public class XmlSerializerUtility { /// <summary> /// 从配置文件加载 /// </summary> /// <param name="configFile"></param> /// <param name="type"></param> public static object LoadFromFile(string configFile, Type type) { if (File.Exists(configFile)) { System.IO.FileStream fs = new System.IO.FileStream(configFile, FileMode.Open); XmlSerializer x = new XmlSerializer(type); object info = null; info = (object)x.Deserialize(fs); fs.Close(); if (null == info) return null; return info; } return null; } /// <summary> /// 保存信息到配置文件 /// </summary> /// <param name="configFile"></param> /// <param name="type">对象的Type</param> /// <param name="obj">对象实例</param> public static void SaveToFile(string configFile, Type type, object obj) { // Create the XmlSerializer. XmlSerializer s = new XmlSerializer(type); // To write the file, a TextWriter is required. TextWriter writer = new StreamWriter(configFile); s.Serialize(writer, obj); writer.Close(); } } public class VehiclSymbolInfo { /// <summary> /// 符号所在的IStyleGalleryItem的ID /// 这个和ISymbologyStyleClass的Index的关系：Index=ID-1 /// </summary> public int ID; /// <summary> /// 符号所在的IStyleGalleryItem的Name /// </summary> public string Name; public VehiclSymbolInfo() { } public VehiclSymbolInfo(int id, string name) { ID = id; Name = name; } }} 

 

数据是从数据库中得出.要显示的符号是从文件中读取.

其实位置信息可以通过手动在axMapControl中点击获取,如下:

 

//用来存储坐标的类

    public class LL

    {

        public double Longitude;

        public double Latitude;

    }

//获取点

public static IList<LL> phss = new List<LL>();

private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)

        {

            LL ll = new LL();

            ll.Longitude = e.mapX;

            ll.Latitude = e.mapY;

            phss.Add(ll);

        }