XdCxRhDW/XdCxRhDW.App/ExtensionsDev/MapControlEx.cs

using DevExpress.Export.Xl;
using DevExpress.Map;
using DevExpress.Map.Native;
using DevExpress.Utils;
using DevExpress.Utils.Svg;
using DevExpress.XtraBars;
using DevExpress.XtraGrid;
using DevExpress.XtraGrid.Columns;
using DevExpress.XtraGrid.Views.Grid;
using DevExpress.XtraMap;
using DevExpress.XtraMap.ItemEditor;
using DevExpress.XtraPrinting;
using DxHelper;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Data.Common;
using System.Data.SQLite;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Windows.Forms;
using XdCxRhDW.Repostory;

public enum GoogleMapType
{
    /// <summary>
    /// 卫星地图
    /// </summary>
    Sat = 47626774,

    /// <summary>
    /// 地形图
    /// </summary>
    Landform = 370833361,

    /// <summary>
    /// 混合地图
    /// </summary>
    Mix = 1024577166,

    /// <summary>
    /// 普通地图
    /// </summary>
    Normal = 1818940751
}


/// <summary>
/// MapControl扩展类,封装了常用的非业务基础功能.
/// 内置了4个图层,ImageTileLayer、DrawLayer、FixedDrawLayer、PosLayer.
/// 必须首先调用UseDefalutOptions函数
/// </summary>
public static class MapControlEx
{
    class InnerData
    {
        internal GeoPoint _mapMenuGeoPoint;
        internal Dictionary<int, MapItem> _clusterCache = new Dictionary<int, MapItem>();
        internal Dictionary<PosData, MapItem> _dataCache = new Dictionary<PosData, MapItem>();
        internal BarManager barM;
        internal PopupMenu mapMenu;
        internal PopupMenu posMenu;
        internal PopupMenu rectMenu;
        internal Action<(double starLon, double startLat, double centerLon, double centerLat,
    double endLon, double endLat, double lonRange, double latRange)> mOnRectChanged;
        internal Action<(double Lon, double Lat)> onClickChanged;
        internal MapItemStorage mMapStorage;
        internal MapItemStorage mMapStorageFixed;
        internal MapPolyline distinctPath;
        internal MapDot hoverPoint;
        internal ToolTipControllerShowEventArgs hoverTip;
        internal ToolTipController mapToolTip;
        internal MapItemStorage posStorge;
        internal MapRectangle rangeItem;
        internal MapDot dotItem = new MapDot() { Tag = "DrawRect" };
        internal bool drawingRect = false;
        internal bool mouseLeftDown = false;
        internal (double starLon, double startLat, double centerLon, double centerLat,
           double endLon, double endLat, double lonRange, double latRange)
           CurrentRect;
        internal MapDot preSelectedItem;
        internal Type posDataType;
    }
    private static GoogleMapType mMapType = GoogleMapType.Normal;
    private static List<MapControl> listMapCtrl = new List<MapControl>();
    private const int _dotSize = 8;
    private const int _selectedDotSize = 12;
    public static MapControl SetMapLayerType(this MapControl ctrl, string wmsUrl)
    {
        if (!string.IsNullOrWhiteSpace(wmsUrl))
        {
            var provider = new WmsDataProvider();//地图瓦片提供者
            provider.ServerUri = wmsUrl;
            provider.ActiveLayerName = "OSM-WMS";
            ctrl.GetImageLayer().DataProvider = provider;
        }
        else
        {
            bool localGmdbDataEnable = false;//本地Data.Gmdb是否可用,可用时读取本地瓦片,否则执行Http请求资源
            var files = Directory.GetFiles(Application.StartupPath, "Data.gmdb", SearchOption.AllDirectories);
            if (files.Length > 0)
            {
                try
                {
                    string conStr = string.Format("Data Source=\"{0}\";Page Size=32768", files[0]);
                    var con = new SQLiteConnection(conStr);
                    con.Open();
                    con.Close();
                    localGmdbDataEnable = true;
                }
                catch (Exception ex)
                {
                    Console.Error.WriteLine(ex.Message);
                }
            }
            if (localGmdbDataEnable)
            {
                var provider = new ImageTileDataProvider();//地图瓦片提供者
                provider.TileSource = new ImageTileSource();//地图瓦片数据源接口实现
                ctrl.GetImageLayer().DataProvider = provider;
            }
            else
            {
                var provider = new HttpMapDataProvider();
                ctrl.GetImageLayer().DataProvider = provider;
            }
        }
        return ctrl;
    }
    /// <summary>
    /// <para>设置地图通用属性并创建4个Layer.</para>
    /// <para>ImageLayer:绘制地图瓦片</para>
    /// <para>DrawLayer:地图绘制图层,右键可以擦除</para>
    /// <para>FixedDrawLayer:地图绘制层,右键无法擦除</para>
    /// <para>PosLayer:定位点绘制专用图层</para>
    /// </summary>
    /// <param name="ctrl"></param>
    /// <returns></returns>
    public static MapControl UseDefalutOptions(this MapControl ctrl)
    {
        var barM = new BarManager();
        barM.BeginInit();
        barM.Form = ctrl;
        var mapMeun = new PopupMenu() { Manager = barM };
        var posMenu = new PopupMenu() { Manager = barM };
        var rectMenu = new PopupMenu() { Manager = barM };
        barM.EndInit();
        listMapCtrl.Add(ctrl);
        var innerData = new InnerData();
        innerData.barM = barM;
        innerData.mapMenu = mapMeun;
        innerData.posMenu = posMenu;
        innerData.rectMenu = rectMenu;
        innerData.mapToolTip = new ToolTipController();
        innerData.mapToolTip.InitialDelay = 10;
        innerData.mapToolTip.KeepWhileHovered = true;
        innerData.mapToolTip.ReshowDelay = 10;
        innerData.mapToolTip.ShowBeak = true;
        innerData.mapToolTip.ToolTipAnchor = DevExpress.Utils.ToolTipAnchor.Cursor;
        innerData.mapToolTip.ToolTipType = ToolTipType.SuperTip;
        ctrl.Tag = innerData;
        ctrl.ToolTipController = innerData.mapToolTip;
        ctrl.ToolTipController.BeforeShow += (sender, e) =>
        {
            if (e.SelectedObject == null) return;
            if (e.SelectedObject.ToString() == ItemsEditorPanelAction.AddRectangle.ToString())
            {
                e.ToolTip = "绘制矩形";
                return;
            }
            var mapDot = e.SelectedObject as MapDot;
            if (mapDot == null) return;
            var posItem = mapDot.Tag as PosData;
            if (mapDot == null || posItem == null) return;
            SuperToolTip superToolTip = new SuperToolTip();
            if (posItem.ClusterCount == 1)
            {
                var props = posItem.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public).ToList();
                var list = new List<(int Index, string Name, string Format, object Value)>();
                foreach (var prop in props)
                {
                    var attrToolTip = prop.GetCustomAttribute<ToolTipAttribute>();
                    if (attrToolTip == null) continue;
                    string toolTipFormat = attrToolTip.Format;


                    var val = prop.GetValue(posItem);

                    string displayName = prop.Name;
                    var attrDisplay = prop.GetCustomAttribute<DisplayAttribute>();
                    if (attrDisplay != null && !string.IsNullOrWhiteSpace(attrDisplay.Name))
                        displayName = attrDisplay.Name;

                    int index = attrToolTip.Index;
                    list.Add((index, displayName, toolTipFormat, val));
                }
                list = list.OrderBy(p => p.Index).ToList();
                foreach ((int Index, string Name, string Format, object val) in list)
                {
                    string f = null;
                    if (val is DateTime)
                    {
                        f = "yyyy-MM-dd HH:mm:ss";

                    }
                    else if (val is float || val is double || val is decimal)
                    {
                        f = "f4";
                    }
                    if (!string.IsNullOrWhiteSpace(Format))
                        f = Format;
                    string valStr;
                    if (!string.IsNullOrWhiteSpace(f))
                        valStr = ((dynamic)val).ToString(f);
                    else
                        valStr = val.ToString();
                    ToolTipItem tipItem = new ToolTipItem();
                    tipItem.Text = $"{Name}：{valStr}";
                    superToolTip.Items.Add(tipItem);
                }
            }
            else
            {
                ToolTipItem tipItem = new ToolTipItem();
                tipItem.Text = $"当前位置附近有{posItem.ClusterCount}个定位点,放大可查看";
                superToolTip.Items.Add(tipItem);
            }
            e.SuperTip = superToolTip;
        };
        ctrl.MouseDown += (sender, e) =>
        {
            if (e.Button == MouseButtons.Right)
            {
                var hitInfo = ctrl.CalcHitInfo(e.Location);
                if (hitInfo.InMapRectangle && innerData.rangeItem != null)
                {
                    rectMenu?.ShowPopup(Cursor.Position);
                }
                else if (hitInfo.InMapDot && hitInfo.MapDot.Tag is PosData)
                {
                    var selectPos = (PosData)hitInfo.MapDot.Tag;
                    if (!selectPos.Selected)
                    {
                        selectPos.Selected = true;
                        ctrl.UpdatePosItem(selectPos);
                    }
                    if (selectPos.ClusterCount == 1)
                    {
                        posMenu?.ShowPopup(Cursor.Position);//选中了原始MapItem
                    }
                    else
                    {
                        //选中了聚合后的MapItem
                    }

                }
                else
                {
                    var geoPoint = ctrl.ScreenPointToCoordPoint(e.Location) as GeoPoint;
                    innerData._mapMenuGeoPoint = geoPoint;
                    innerData.mapMenu?.ShowPopup(Cursor.Position);
                }
            }
            else
            {
                innerData.mouseLeftDown = true;
                innerData.barM.CloseMenus();
                var hitInfo = ctrl.CalcHitInfo(e.Location);
                if (hitInfo.InMapDot && hitInfo.MapDot.Tag is PosData)
                {
                    var selectPos = hitInfo.MapDot.Tag as PosData;
                    if (!selectPos.Selected)
                    {
                        selectPos.Selected = true;
                        ctrl.UpdatePosItem(selectPos);
                    }
                }
            }
        };
        ctrl.MouseUp += (sender, e) =>
        {
            innerData.mouseLeftDown = false;
        };
        //中心点、缩放级别
        ctrl.MinZoomLevel = 3;
        ctrl.ZoomLevel = 5;
        ctrl.MaxZoomLevel = 14;
        ctrl.CenterPoint = new GeoPoint(18, 110);

        //禁用多余特效
        ctrl.EnableDelayedScrolling = true;
        ctrl.RenderMode = RenderMode.DirectX;
        ctrl.EnableAnimation = false;
        ctrl.EnableRotation = false;
        //ctrl.ShowSearchPanel = false;
        ctrl.SearchPanelOptions.Visible = false;
        ctrl.SelectionMode = ElementSelectionMode.Single;//只能单选图层上的元素
        ((GeoMapCoordinateSystem)ctrl.CoordinateSystem).CircularScrollingMode = CircularScrollingMode.TilesAndVectorItems;

        //地图下方导航栏
        ctrl.NavigationPanelOptions.Height = 35;
        ctrl.NavigationPanelOptions.BackgroundStyle.Fill = Color.Transparent;
        ctrl.NavigationPanelOptions.ShowScrollButtons = false;
        ctrl.NavigationPanelOptions.ShowZoomTrackbar = false;
        ctrl.NavigationPanelOptions.ShowCoordinates = true;
        ctrl.NavigationPanelOptions.ShowKilometersScale = false;
        ctrl.NavigationPanelOptions.ShowMilesScale = false;
        ctrl.NavigationPanelOptions.CoordinatesStyle.Font = new Font("微软雅黑", 10F);
        ctrl.NavigationPanelOptions.ScaleStyle.Font = new Font("微软雅黑", 10F);

        // Create ImageTileLayer
        ImageLayer layer = new ImageLayer() { Name = "ImageTileLayer" };
        //bool localGmdbDataEnable = false;//本地Data.Gmdb是否可用,可用时读取本地瓦片,否则执行Http请求资源
        //var files = Directory.GetFiles(Application.StartupPath, "Data.gmdb", SearchOption.AllDirectories);
        //if (files.Length > 0)
        //{
        //    try
        //    {
        //        string conStr = string.Format("Data Source=\"{0}\";Page Size=32768", files[0]);
        //        var con = new SQLiteConnection(conStr);
        //        con.Open();
        //        con.Close();
        //        localGmdbDataEnable = true;
        //    }
        //    catch (Exception ex)
        //    {
        //        Console.Error.WriteLine(ex.Message);
        //    }
        //}
        //if (localGmdbDataEnable)
        //{
        //    var provider = new ImageTileDataProvider();//地图瓦片提供者
        //    provider.TileSource = new ImageTileSource();//地图瓦片数据源接口实现
        //    layer.DataProvider = provider;
        //}
        //else
        //{
        //    var provider = new HttpMapDataProvider();
        //    layer.DataProvider = provider;
        //}
        ctrl.Layers.Add(layer);

        //地图绘制加载(标点、测距、框选等元素载体图层).用来绘制可擦除的元素
        var layerDraw = new VectorItemsLayer() { Name = "DrawLayer" };
        var drawDataStorage = new MapItemStorage();
        layerDraw.Data = drawDataStorage;
        ctrl.Layers.Add(layerDraw);
        innerData.mMapStorage = drawDataStorage;

        //绘制图层，不可手动擦除，一般用来绘制卫星、参考站等固定元素
        var layerDrawFixed = new VectorItemsLayer() { Name = "FixedDrawLayer" };
        var drawDataStorageFixed = new MapItemStorage();
        layerDrawFixed.Data = drawDataStorageFixed;
        ctrl.Layers.Add(layerDrawFixed);
        innerData.mMapStorageFixed = drawDataStorageFixed;


        //定位点专用PosLayer
        var layerPos = new VectorItemsLayer() { Name = "PosLayer" };
        layerPos.ToolTipPattern = "Test";//随便给一个,不然不会显示定位点的tooltip
        layerPos.AllowEditItems = true;
        layerPos.EnableHighlighting = false;
        layerPos.EnableSelection = false;
        ctrl.Layers.Add(layerPos);
        var posStorge = new MapItemStorage();
        layerPos.Data = posStorge;
        innerData.posStorge = posStorge;
        return ctrl;
    }
    /// <summary>
    /// 在框选矩形上增加右键菜单
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="caption"></param>
    /// <param name="img"></param>
    /// <param name="action">一个回调,参数为选中的定位点</param>
    /// <returns></returns>
    public static MapControl AddPosMenu<T>(this MapControl ctrl, string caption, SvgImage img, Action<T> action, Func<T, bool> showCondition = null) where T : PosData, new()
    {
        var btnCustom = new BarButtonItem() { Caption = caption };
        btnCustom.ImageOptions.SvgImage = img;
        btnCustom.Tag = ctrl;
        var innerData = ctrl.Tag as InnerData;
        btnCustom.ItemClick += (sender, e) =>
        {
            action((T)innerData.preSelectedItem.Tag);
        };
        innerData.barM.BeginInit();
        innerData.barM.Items.Add(btnCustom);

        innerData.posMenu.LinksPersistInfo.Add(new LinkPersistInfo(btnCustom));
        innerData.barM.EndInit();
        innerData.posMenu.BeforePopup += (sender, e) =>
        {
            if (showCondition == null)
                btnCustom.Visibility = BarItemVisibility.Always;
            else
            {
                bool showBtn = showCondition((T)innerData.preSelectedItem.Tag);
                if (showBtn)
                    btnCustom.Visibility = BarItemVisibility.Always;
                else
                    btnCustom.Visibility = BarItemVisibility.Never;
            }
                
        };
        return ctrl;
    }

    /// <summary>
    /// 在地图上增加右键菜单
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="caption"></param>
    /// <param name="img"></param>
    /// <param name="action">一个回调,参数为点击位置的经纬度</param>
    /// <returns></returns>
    public static MapControl AddMapMenu(this MapControl ctrl, string caption, SvgImage img, Action<double, double> action)
    {
        var btnCustom = new BarButtonItem() { Caption = caption, Name = caption };
        btnCustom.ImageOptions.SvgImage = img;
        btnCustom.Tag = ctrl;
        var innerData = ctrl.Tag as InnerData;
        btnCustom.ItemClick += (sender, e) =>
        {
            action(innerData._mapMenuGeoPoint.Longitude, innerData._mapMenuGeoPoint.Latitude);
        };
        innerData.barM.BeginInit();

        innerData.barM.Items.Add(btnCustom);
        innerData.mapMenu.LinksPersistInfo.Add(new LinkPersistInfo(btnCustom));
        innerData.barM.EndInit();
        return ctrl;
    }


    /// <summary>
    /// 在框选矩形上增加右键菜单
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="caption"></param>
    /// <param name="img"></param>
    /// <param name="action">一个回调,参数为框选的定位点</param>
    /// <returns></returns>
    public static MapControl AddRectMenu<T>(this MapControl ctrl, string caption, SvgImage img, Action<IEnumerable<T>> action) where T : PosData, new()
    {
        var btnCustom = new BarButtonItem() { Caption = caption };
        btnCustom.ImageOptions.SvgImage = img;
        btnCustom.Tag = ctrl;
        btnCustom.ItemClick += (sender, e) =>
         {
             var data = ctrl.GetRectPosItem<T>();
             action(data);
         };
        var innerData = ctrl.Tag as InnerData;
        innerData.barM.BeginInit();
        innerData.barM.Items.Add(btnCustom);

        innerData.rectMenu.LinksPersistInfo.Add(new LinkPersistInfo(btnCustom));
        innerData.barM.EndInit();
        return ctrl;
    }


    /// <summary>
    /// 重新设置定位数据
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="items">数据源(指定null或空集合可以清空已有数据)</param>
    /// <param name="clearDrawLayer">是否清除DrawLayer上临时绘制的内容</param>
    public static void SetPosDataSource<T>(this MapControl ctrl, IEnumerable<T> items, bool clearDrawLayer = true) where T : PosData, new()
    {
        var innerData = ctrl.Tag as InnerData;
        innerData._dataCache.Clear();
        if (clearDrawLayer)
            ctrl.ClearDrawObj();
        innerData.posStorge.Items.Clear();
        if (items == null || !items.Any())
        {
            ctrl.Refresh();
            return;
        }
        List<MapDot> list = new List<MapDot>();
        for (int i = 0; i < items.Count(); i++)
        {
            var p = items.ElementAt(i);
            var mapItem = new MapDot()
            {
                EnableHighlighting = DefaultBoolean.True,
                EnableSelection = DefaultBoolean.False,
                CanMove = false,
                Visible = p.Visible,
                IsHitTestVisible = true,
                Fill = ColorHelper.IsHtmlColor(p.ColorKey) ? ColorTranslator.FromHtml(p.ColorKey) : ColorHelper.GetColor(p.ColorKey),
                Size = _dotSize,
                Tag = items.ElementAt(i),
                Location = new GeoPoint(p.PosLat, p.PosLon)
            };
            list.Add(mapItem);
            innerData._dataCache.Add(p, mapItem);
        }
        innerData.posStorge.Items.AddRange(list);
    }

    /// <summary>
    /// 定位图层数据源添加一个定位点
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="item"></param>
    public static void AddPosItem<T>(this MapControl ctrl, T item) where T : PosData, new()
    {
        if (item.PosLon > 180) return;
        var innerData = ctrl.Tag as InnerData;
        var mapItem = new MapDot()
        {
            EnableHighlighting = DefaultBoolean.True,
            EnableSelection = DefaultBoolean.False,
            CanMove = false,
            Visible = item.Visible,
            IsHitTestVisible = true,
            Fill = ColorHelper.IsHtmlColor(item.ColorKey) ? ColorTranslator.FromHtml(item.ColorKey) : ColorHelper.GetColor(item.ColorKey),
            Size = _dotSize,
            Tag = item,
            Location = new GeoPoint(item.PosLat, item.PosLon)
        };
        innerData._dataCache.Add(item, mapItem);
        innerData.posStorge.Items.Add(mapItem);

    }

    /// <summary>
    /// 定位图层数据源删除定位点
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="ctrl"></param>
    /// <param name="data"></param>
    public static void DelPosItem<T>(this MapControl ctrl, IEnumerable<T> data) where T : PosData, new()
    {
        if (data == null || !data.Any()) return;
        foreach (var item in data)
        {
            ctrl.DelPosItem(item);
        }
        ctrl.Refresh();
    }

    /// <summary>
    /// 定位图层数据源删除定位点
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="ctrl"></param>
    /// <param name="data"></param>
    public static void DelPosItem<T>(this MapControl ctrl, T item) where T : PosData, new()
    {
        if (item == null) return;
        var innerData = ctrl.Tag as InnerData;
        if (innerData._dataCache.ContainsKey(item))
        {
            innerData.posStorge.Items.Remove(innerData._dataCache[item]);
            innerData._dataCache.Remove(item);
        }
        ctrl.Refresh();

    }

    /// <summary>
    /// 定位图层数据源删除定位点
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="ctrl"></param>
    /// <param name="data"></param>
    public static void DelPosItem<T>(this MapControl ctrl, Func<T, bool> predicate) where T : PosData, new()
    {
        var innerData = ctrl.Tag as InnerData;
        List<PosData> keys = new List<PosData>();
        foreach (var item in innerData._dataCache.Keys)
        {
            if (predicate((T)item))
                keys.Add(item);

        }
        foreach (var item in keys)
        {
            ctrl.DelPosItem(item);
        }
        ctrl.Refresh();
    }

    /// <summary>
    /// 更新定位数据(可以更新可见性、颜色、经纬度、选中状态)
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="ctrl"></param>
    /// <param name="item"></param>
    /// <param name="setCenter">是否将这个点设置到地图中心显示</param>
    public static void UpdatePosItem<T>(this MapControl ctrl, T item, bool setCenter = false) where T : PosData, new()
    {
        if (item == null) return;
        var innerData = ctrl.Tag as InnerData;
        if (innerData._dataCache.ContainsKey(item))
        {
            var mapDot = innerData._dataCache[item] as MapDot;
            mapDot.Visible = item.Visible;//外部修改了可见性
            mapDot.Fill = ColorHelper.IsHtmlColor(item.ColorKey) ? ColorTranslator.FromHtml(item.ColorKey) : ColorHelper.GetColor(item.ColorKey);//外部修改了颜色
            mapDot.Location = new GeoPoint(item.PosLat, item.PosLon);//外部修改了位置
            if (mapDot.Size != (item.Selected ? _selectedDotSize : _dotSize))//外部修改了选中状态
            {
                mapDot.Size = item.Selected ? _selectedDotSize : _dotSize;
                mapDot.StrokeWidth = item.Selected ? 0 : 1;
                if (item.ClusterCount > 1)
                {
                    if (innerData._clusterCache.TryGetValue(item.ClusterKey, out MapItem clusterItem))
                    {
                        (clusterItem as MapDot).Size = item.Selected ? _selectedDotSize : _dotSize;
                    }
                }
                if (mapDot.ClusteredItems.Any())
                    (mapDot.ClusteredItems[0] as MapDot).Size = _selectedDotSize;
                if (item.Selected)
                {
                    //让选中的Item在上层
                    var idx = innerData.posStorge.Items.IndexOf(mapDot);
                    innerData.posStorge.Items.Swap(idx, innerData.posStorge.Items.Count - 1);
                    //innerData.posStorge.Items.Add(mapDot);

                    //需要将上次选中的点设置为未选中
                    if (innerData.preSelectedItem != null)
                    {
                        innerData.preSelectedItem.Size = _dotSize;
                        (innerData.preSelectedItem.Tag as PosData).Selected = false;
                        if ((innerData.preSelectedItem.Tag as PosData).ClusterCount > 1)
                        {
                            if (innerData._clusterCache.TryGetValue((innerData.preSelectedItem.Tag as PosData).ClusterKey, out MapItem clusterItem))
                            {
                                (clusterItem as MapDot).Size = _dotSize + 2;
                            }
                        }
                    }
                    innerData.preSelectedItem = mapDot;
                }
            }
            if (setCenter && item.Visible)
                ctrl.SetCenterPoint(item.PosLon, item.PosLat, false);
        }
    }

    /// <summary>
    /// 更新定位数据(可以更新可见性、颜色、经纬度)
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="ctrl"></param>
    /// <param name="item"></param>
    public static void UpdatePosItem<T>(this MapControl ctrl, IEnumerable<T> items) where T : PosData, new()
    {
        if (items == null || !items.Any()) return;
        var innerData = ctrl.Tag as InnerData;
        foreach (var item in items)
        {
            if (innerData._dataCache.ContainsKey(item))
            {
                var mapDot = innerData._dataCache[item] as MapDot;
                mapDot.Visible = item.Visible;//外部修改了可见性
                mapDot.Fill = ColorHelper.IsHtmlColor(item.ColorKey) ? ColorTranslator.FromHtml(item.ColorKey) : ColorHelper.GetColor(item.ColorKey);//外部修改了颜色
                mapDot.Location = new GeoPoint(item.PosLat, item.PosLon);//外部修改了位置
            }
        }

    }

    /// <summary>
    /// 设置地图中心点
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="lon"></param>
    /// <param name="lat"></param>
    /// <param name="animated">是否显示动画</param>
    /// <returns></returns>
    public static MapControl SetCenterPoint(this MapControl ctrl, double lon, double lat, bool animated = false)
    {
        ctrl.SetCenterPoint(new GeoPoint(lat, lon), animated);
        return ctrl;
    }
    /// <summary>
    /// 地图上添加图片
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="tag"></param>
    /// <param name="imgLat"></param>
    /// <param name="imgLon"></param>
    /// <param name="img"></param>
    /// <param name="toolTip"></param>
    public static void DrawFixedImg(this MapControl ctrl, string tag, double imgLat, double imgLon, Image img, string toolTip = "")
    {
        var innerData = ctrl.Tag as InnerData;
        var item = new MapCustomElement() { Tag = tag };
        item.UseAnimation = false;
        item.BackgroundDrawingMode = ElementState.None;
        item.Location = new GeoPoint(imgLat, imgLon);
        item.Image = img;
        item.ToolTipPattern = toolTip;
        innerData.mMapStorageFixed.Items.Add(item);
    }
    /// <summary>
    /// 地图上添加指定大小图片
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="tag"></param>
    /// <param name="imgLat"></param>
    /// <param name="imgLon"></param>
    /// <param name="img"></param>
    /// <param name="size"></param>
    /// <param name="toolTip"></param>
    public static void DrawFixedImg(this MapControl ctrl, string tag, double imgLat, double imgLon, SvgImage img, string toolTip = "")
    {
        var innerData = ctrl.Tag as InnerData;
        var item = new MapCustomElement() { Tag = tag };
        item.UseAnimation = false;
        item.BackgroundDrawingMode = ElementState.None;
        item.Location = new GeoPoint(imgLat, imgLon);
        item.SvgImage = img;
        item.ToolTipPattern = toolTip;
        innerData.mMapStorageFixed.Items.Add(item);
    }

    public static void DelFixedImg(this MapControl ctrl, string tag)
    {
        var innerData = ctrl.Tag as InnerData;
        var delItems = innerData.mMapStorageFixed.Items.ToList().FindAll(p => p.Tag.ToString() == tag);
        foreach (var item in delItems)
        {
            innerData.mMapStorageFixed.Items.Remove(item);
        }
    }

    /// <summary>
    /// 获取当前矩形框选的定位点
    /// </summary>
    /// <param name="ctrl"></param>
    /// <returns></returns>
    public static IEnumerable<T> GetRectPosItem<T>(this MapControl ctrl) where T : PosData, new()
    {
        var innerData = ctrl.Tag as InnerData;
        if (innerData.CurrentRect == default) return new List<T>();
        var rect = ctrl.GetCurrentRect();
        double startLon = rect.starLon;
        double startLat = rect.startLat;
        double endLon = rect.endLon;
        double endLat = rect.endLat;
        var temp = innerData._dataCache.Keys.Where(p => p.InRectangle(startLon, startLat, endLon, endLat));
        var res = temp.Select(p => (T)p);
        return res;
    }

    /// <summary>
    /// <para>设置地图瓦片Http地址.格式如http://192.168.100.63:58089</para>
    /// <para>当客户端本地运行目录或子目录存在Data.gmdb时Http接口不会被调用</para>
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="httpAddr">such as http://192.168.100.63:58089</param>
    /// <returns></returns>
    public static MapControl SetMapDataHttpAddr(this MapControl ctrl, string httpAddr)
    {
        var provider = ctrl.GetImageLayer().DataProvider;
        if (provider is HttpMapDataProvider)
        {
            var tileSource = ((provider as HttpMapDataProvider).TileSource as HttpTileSource);
            tileSource.HttpServerAddr = httpAddr;
        }
        return ctrl;
    }

    /// <summary>
    /// 定位点使用内置聚合器
    /// </summary>
    /// <param name="ctrl"></param>
    /// <returns></returns>
    public static MapControl UseCluster(this MapControl ctrl)
    {
        var innerData = ctrl.Tag as InnerData;
        innerData.posStorge.Clusterer = new PosClusterer(ctrl);//定位点聚合器
        return ctrl;
    }

    /// <summary>
    /// 为地图添加右键测距功能
    /// </summary>
    /// <returns></returns>
    public static MapControl UseDistanceLine(this MapControl ctrl)
    {
        var btnDistance = new BarButtonItem() { Caption = "测距" };
        btnDistance.ImageOptions.SvgImage = SvgHelper.CreateDistanceLine();
        btnDistance.Tag = ctrl;
        btnDistance.ItemClick += DistanceLine_ItemClick;
        var innerData = ctrl.Tag as InnerData;
        innerData.barM.BeginInit();
        innerData.barM.Items.Add(btnDistance);
        innerData.mapMenu.LinksPersistInfo.Add(new LinkPersistInfo(btnDistance));
        innerData.barM.EndInit();
        return ctrl;
    }
    /// <summary>
    /// 使用航迹
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="onClickChanged">点击事件返回当前经纬度</param>
    /// <returns></returns>
    public static MapControl UseHJ(this MapControl ctrl, Action<(double Lon, double Lat)> onClickChanged = null)
    {
        var btnHJ = new BarButtonItem() { Caption = "航迹" };
        btnHJ.ImageOptions.SvgImage = SvgHelper.CreateMarkDot();
        btnHJ.Tag = ctrl;

        var innerData = ctrl.Tag as InnerData;
        innerData.onClickChanged = onClickChanged;
        btnHJ.ItemClick += (sender, e) =>
        {
            ctrl.MapEditor.SetEditMode();
            ctrl.MouseClick += AddHJPoint;
            ctrl.DoubleClick += (sender1, e1) =>
            {
                ctrl.MouseClick -= AddHJPoint;
            };
        };
        innerData.barM.BeginInit();
        innerData.barM.Items.Add(btnHJ);
        innerData.mapMenu.LinksPersistInfo.Add(new LinkPersistInfo(btnHJ));
        innerData.barM.EndInit();
        return ctrl;
    }

    /// <summary>
    /// 添加航迹点
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="ctrl"></param>
    /// <param name="item"></param>
    public static void AddHJPosItem<T>(this MapControl ctrl, T item) where T : PosData, new()
    {
        if (item.PosLon > 180) return;
        var innerData = ctrl.Tag as InnerData;
        var mapItem = new MapDot()
        {
            EnableHighlighting = DefaultBoolean.True,
            EnableSelection = DefaultBoolean.False,
            CanMove = false,
            Visible = item.Visible,
            IsHitTestVisible = true,
            Fill = ColorHelper.IsHtmlColor(item.ColorKey) ? ColorTranslator.FromHtml(item.ColorKey) : ColorHelper.GetColor(item.ColorKey),
            Size = _dotSize,
            Tag = item,
            Location = new GeoPoint(item.PosLat, item.PosLon),
            ToolTipPattern = "dd"
        };
        innerData.mMapStorage.Items.Add(mapItem);

    }
    private static void AddHJPoint(object sender, MouseEventArgs e)
    {
        var innerData = (sender as MapControl).Tag as InnerData;
        var ctrl = sender as MapControl;
        var geoPoint = ctrl.ScreenPointToCoordPoint(e.Location) as GeoPoint;
        innerData.onClickChanged?.Invoke((geoPoint.Longitude, geoPoint.Latitude));

    }


    /// <summary>
    /// 为地图添加右键标点功能
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="menu"></param>
    /// <param name="item"></param>
    /// <returns></returns>
    public static MapControl UseMarkDot(this MapControl ctrl)
    {
        var btnMarkDot = new BarButtonItem() { Caption = "标点" };
        btnMarkDot.ImageOptions.SvgImage = SvgHelper.CreateMarkDot();
        btnMarkDot.Tag = ctrl;
        btnMarkDot.ItemClick += MarkDot_ItemClick;
        var innerData = ctrl.Tag as InnerData;
        innerData.barM.BeginInit();
        innerData.barM.Items.Add(btnMarkDot);
        innerData.mapMenu.LinksPersistInfo.Add(new LinkPersistInfo(btnMarkDot));
        innerData.barM.EndInit();
        return ctrl;
    }

    /// <summary>
    /// 为地图添加清除功能
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="item"></param>
    /// <returns></returns>
    public static MapControl UseClearAll(this MapControl ctrl)
    {
        var btnClearAll = new BarButtonItem() { Caption = "清除" };
        btnClearAll.ImageOptions.SvgImage = SvgHelper.CreateClear();
        btnClearAll.Tag = ctrl;
        btnClearAll.ItemClick += (sender, e) => ctrl.ClearDrawObj();
        var innerData = ctrl.Tag as InnerData;
        innerData.barM.BeginInit();
        innerData.barM.Items.Add(btnClearAll);
        innerData.mapMenu.LinksPersistInfo.Add(new LinkPersistInfo(btnClearAll));
        innerData.barM.EndInit();
        return ctrl;
    }

    /// <summary>
    /// 为地图添加导出图片功能
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="item"></param>
    /// <returns></returns>
    public static MapControl UseExportImg(this MapControl ctrl)
    {
        var btnExportImg = new BarButtonItem() { Caption = "导出图片" };
        btnExportImg.ImageOptions.SvgImage = SvgHelper.CreateExportImg();
        btnExportImg.Tag = ctrl;
        btnExportImg.ItemClick += ExportImg_ItemClick;
        var innerData = ctrl.Tag as InnerData;
        innerData.barM.BeginInit();
        innerData.barM.Items.Add(btnExportImg);
        innerData.mapMenu.LinksPersistInfo.Add(new LinkPersistInfo(btnExportImg));
        innerData.barM.EndInit();
        return ctrl;
    }
    /// <summary>
    /// 为地图添加导出图片功能
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="item"></param>
    /// <returns></returns>
    public static MapControl UseExportCsv(this MapControl ctrl, bool exportHeader = true)
    {
        var innerData = ctrl.Tag as InnerData;
        var btnExportCsv = new BarButtonItem() { Caption = "导出Csv" };
        btnExportCsv.ImageOptions.SvgImage = SvgHelper.CreateExportCsv();
        btnExportCsv.Tag = ctrl;
        btnExportCsv.ItemClick += (sender, e) =>
        {
            if (!innerData._dataCache.Any()) return;
            bool exportSigTime = false;
            Dictionary<string, string> cellFormats = new Dictionary<string, string>();//单元格的format
            var props = innerData._dataCache.Keys.GetType().GetGenericArguments().First().GetProperties(BindingFlags.Public | BindingFlags.Instance);
            List<(int ColumnIndex, PropertyInfo Prop, string Header)> listPorps = new List<(int, PropertyInfo, string)>();
            foreach (var prop in props)
            {
                ExportCellAttribute attrExport = prop.GetCustomAttribute<ExportCellAttribute>();
                if (attrExport == null) continue;
                if (prop.Name == nameof(PosData.SigTime))
                    exportSigTime = true;
                if (!string.IsNullOrWhiteSpace(attrExport.Format))
                {
                    cellFormats.Add(prop.Name, attrExport.Format);
                }
                if (attrExport.ColumnIndex == -1)
                    attrExport.ColumnIndex = 10000;
                var attrDisplay = prop.GetCustomAttribute<DisplayAttribute>();
                if (attrDisplay != null && !string.IsNullOrWhiteSpace(attrDisplay.Name))
                    listPorps.Add((attrExport.ColumnIndex, prop, attrDisplay.Name));
                else
                    listPorps.Add((attrExport.ColumnIndex, prop, prop.Name));

            }
            listPorps = listPorps.OrderBy(p => p.ColumnIndex).ToList();
            using (var dialog = new SaveFileDialog())
            {
                dialog.Filter = "CSV文件|*.csv";
                dialog.AddExtension = true;
                dialog.FileName = $"Pos{DateTime.Now:yyyyMMddHHmmss}.csv";
                if (dialog.ShowDialog() == DialogResult.OK)
                {
                    var list = innerData._dataCache.Keys as IEnumerable<PosData>;
                    if (exportSigTime)
                        list = list.OrderByDescending(p => p.SigTime);//如果导出了SigTime,则自动按照SigTime降序排列后导出
                    StreamWriter sw = new StreamWriter(dialog.FileName, false, new UTF8Encoding(true));//utf8-bom

                    if (exportHeader)
                    {
                        foreach (var prop in listPorps)
                        {
                            sw.Write($"{prop.Header},");
                        }
                        sw.WriteLine();
                    }
                    WaitHelper.ShowOverlayForm(ctrl);
                    long count = list.Count() * listPorps.Count;
                    int idx = 1;
                    foreach (var item in list)
                    {
                        foreach (var prop in listPorps)
                        {
                            WaitHelper.UpdateOverlyText($"{idx * 100 / count}%");
                            var value = prop.Prop.GetValue(item);
                            string str = null;
                            if (cellFormats.ContainsKey(prop.Prop.Name))
                            {
                                str = ((dynamic)value).ToString(cellFormats[prop.Prop.Name]);
                            }
                            else
                            {
                                if (value is DateTime)
                                    str = $"{(DateTime)value:yyyy-MM-dd HH:mm:ss}";
                                else if (value is float || value is double || value is decimal)
                                {
                                    dynamic valD = value;
                                    str = ((dynamic)value).ToString("f4");
                                }
                            }
                            sw.Write($"{str},");
                            idx++;
                        }

                        sw.WriteLine();
                    }
                    sw.Close();
                    WaitHelper.CloseOverlayForm();
                }
            }
            GC.Collect();
        };
        innerData.barM.BeginInit();
        innerData.barM.Items.Add(btnExportCsv);
        innerData.mapMenu.LinksPersistInfo.Add(new LinkPersistInfo(btnExportCsv));
        innerData.barM.EndInit();
        return ctrl;
    }

    /// <summary>
    /// 为地图添加导出Excel数据功能
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="ctrl"></param>
    /// <param name="exportHeader">是否导出列头</param>
    /// <returns></returns>
    public static MapControl UseExportXlsx(this MapControl ctrl, bool exportHeader = true)
    {
        Action action = () =>
        {
            var btnExportXlsx = new BarButtonItem() { Caption = "导出Excel" };
            btnExportXlsx.ImageOptions.SvgImage = SvgHelper.CreateExportXlsx();
            var innerData = ctrl.Tag as InnerData;
            innerData.barM.BeginInit();
            innerData.barM.Items.Add(btnExportXlsx);
            innerData.mapMenu.LinksPersistInfo.Add(new LinkPersistInfo(btnExportXlsx));
            innerData.barM.EndInit();


            btnExportXlsx.ItemClick += (sender, e) =>
            {
                if (!innerData._dataCache.Any()) return;
                GridControl gc = new GridControl();
                GridView view = new GridView();
                view.GridControl = gc;
                gc.MainView = view;
                gc.ViewCollection.Add(view);
                view.OptionsPrint.ShowPrintExportProgress = false;
                bool exportSigTime = false;
                Dictionary<string, string> cellFormats = new Dictionary<string, string>();//单元格的format
                var props = innerData._dataCache.Keys.GetType().GetGenericArguments().First().GetProperties(BindingFlags.Public | BindingFlags.Instance);
                foreach (var prop in props)
                {
                    ExportCellAttribute attrExport = prop.GetCustomAttribute<ExportCellAttribute>();
                    if (attrExport == null) continue;
                    if (prop.Name == nameof(PosData.SigTime))
                        exportSigTime = true;

                    if (!string.IsNullOrWhiteSpace(attrExport.Format))
                    {
                        cellFormats.Add(prop.Name, attrExport.Format);
                    }

                    var col = new GridColumn();
                    col.FieldName = prop.Name;
                    col.Visible = true;
                    var attr = prop.GetCustomAttribute<DisplayAttribute>();
                    if (attr != null && !string.IsNullOrWhiteSpace(attr.Name))
                        col.Caption = attr.Name;
                    else
                        col.Caption = prop.Name;
                    if (attrExport.ColumnIndex >= 0)
                        col.VisibleIndex = attrExport.ColumnIndex;
                    view.Columns.Add(col);
                }
                gc.Visible = false;
                gc.Parent = ctrl.Parent;
                using (var dialog = new SaveFileDialog())
                {
                    dialog.Filter = "Excel文件|*.xlsx";
                    dialog.AddExtension = true;
                    dialog.FileName = $"Pos{DateTime.Now:yyyyMMddHHmmss}.xlsx";
                    if (dialog.ShowDialog() == DialogResult.OK)
                    {
                        var list = innerData._dataCache.Keys.ToList();
                        if (exportSigTime)
                            list = list.OrderByDescending(p => p.SigTime).ToList();//如果导出了SigTime,则自动按照SigTime降序排列后导出

                        gc.DataSource = list;
                        gc.Visible = true;
                        var exportType = DevExpress.Export.ExportSettings.DefaultExportType;
                        var options = new XlsxExportOptionsEx();
                        WaitHelper.ShowOverlayForm(ctrl);
                        options.ExportProgress += arg =>
                          {
                              WaitHelper.UpdateOverlyText($"{arg.ProgressPercentage}%");
                              if (arg.ProgressPercentage >= 100)
                              {
                                  WaitHelper.CloseOverlayForm();
                              }
                          };
                        view.OptionsPrint.PrintHeader = exportHeader;
                        options.CustomizeCell += arg =>
                        {
                            arg.Handled = true;
                            var aligmentCenter = new XlCellAlignment()
                            {
                                HorizontalAlignment = XlHorizontalAlignment.Center,
                                VerticalAlignment = XlVerticalAlignment.Center
                            };
                            var aligmentLeft = new XlCellAlignment()
                            {
                                HorizontalAlignment = XlHorizontalAlignment.Left,
                                VerticalAlignment = XlVerticalAlignment.Center
                            };
                            if (arg.Value is bool)
                            {
                                arg.Formatting.Alignment = aligmentCenter;
                                arg.Value = ((bool)arg.Value) ? "☑" : "☐";
                            }
                            if (arg.Value is DateTime)
                            {
                                arg.Formatting.Alignment = aligmentLeft;
                                arg.Formatting.FormatType = FormatType.DateTime;
                                arg.Formatting.FormatString = "yyyy-MM-dd HH:mm:ss";

                            }
                            else if (arg.Value is float || arg.Value is double || arg.Value is decimal)
                            {
                                arg.Formatting.Alignment = aligmentLeft;
                                arg.Formatting.FormatType = FormatType.Numeric;
                                arg.Formatting.FormatString = "f4";
                            }
                            if (cellFormats.ContainsKey(arg.ColumnFieldName))
                            {
                                arg.Formatting.FormatString = cellFormats[arg.ColumnFieldName];
                            }
                        };
                        view.OptionsPrint.ShowPrintExportProgress = false;
                        DevExpress.Export.ExportSettings.DefaultExportType = DevExpress.Export.ExportType.DataAware;
                        gc.ExportToXlsx(dialog.FileName, options);
                        DevExpress.Export.ExportSettings.DefaultExportType = exportType;
                        gc.Visible = false;
                    }
                }

                gc.Parent = null;
                gc.Dispose();
                GC.Collect();
            };
        };
        if (ctrl.Parent == null)
        {
            ctrl.ParentChanged += (sender, e) => action();
        }
        else
        {
            action();
        }
        return ctrl;
    }

    /// <summary>
    /// 为地图添加矩形框选区域功能
    /// </summary>
    /// <returns></returns>
    public static MapControl UseDrawRect(this MapControl ctrl, Action<(double starLon, double startLat, double centerLon, double centerLat,
        double endLon, double endLat, double lonRange, double latRange)> onRectChanged = null)
    {
        var innerData = ctrl.Tag as InnerData;
        innerData.mOnRectChanged = onRectChanged;
        ctrl.MapEditor.ShowEditorPanel = true;
        ctrl.MapEditor.PanelOptions.ShowAddCalloutButton = false;
        ctrl.MapEditor.PanelOptions.ShowAddCustomElementButton = false;
        ctrl.MapEditor.PanelOptions.ShowAddDotButton = false;
        ctrl.MapEditor.PanelOptions.ShowAddEllipseButton = false;
        ctrl.MapEditor.PanelOptions.ShowAddLineButton = false;
        ctrl.MapEditor.PanelOptions.ShowAddPathButton = false;
        ctrl.MapEditor.PanelOptions.ShowAddPolylineButton = false;
        ctrl.MapEditor.PanelOptions.ShowAddPushpinButton = false;
        ctrl.MapEditor.PanelOptions.ShowAddSplineButton = false;
        ctrl.MapEditor.PanelOptions.ShowEditModeButton = false;
        ctrl.MapEditor.PanelOptions.ShowTransformModeButton = false;
        ctrl.MapEditor.PanelOptions.ShowUndoRedoButtons = false;
        ctrl.MouseMove += DrawRect_MouseMove;


        ctrl.MapEditor.MapItemCreating += (sender, e) =>
        {
            if (!innerData.mouseLeftDown)
            {
                e.Cancel = true;
                return;
            }
            if (!(e.Item is MapRectangle)) return;
            var items = innerData.mMapStorage.Items.ToList().FindAll(p => p.Tag != null && p.Tag.ToString() == "DrawRect");
            ctrl.MapEditor.RemoveItems(items);

            var item = e.Item as MapRectangle;
            item.Tag = "DrawRect";
            item.CanMove = false;
            item.CanResize = false;
            item.EnableSelection = DefaultBoolean.False;
            item.EnableHighlighting = DefaultBoolean.True;
            innerData.rangeItem = item;
            if (innerData.rangeItem.Height == 0 && innerData.rangeItem.Width == 0)
            {
                innerData.rangeItem.Height = 5;
                innerData.rangeItem.Width = 5;
            }
            item.Fill = Color.FromArgb(50, Color.FromArgb(23, 107, 209));
            item.Stroke = Color.FromArgb(23, 107, 209);
            item.StrokeWidth = 1;

            innerData.dotItem.Fill = Color.Red;
            innerData.dotItem.Size = 6;
            innerData.dotItem.Location = innerData.rangeItem.GetCenter();
            innerData.mMapStorage.Items.Add(innerData.rangeItem);
            innerData.mMapStorage.Items.Add(innerData.dotItem);
            DrawRect_MouseMove(ctrl, null);
            var layer = ctrl.Layers.Find(p => p.Name == "");
            if (layer != null) ctrl.Layers.Remove(layer);
        };
        ctrl.MapEditor.MapItemEdited += (sender, e) =>
        {
            innerData.drawingRect = e.Action == MapEditorAction.Create;
        };
        return ctrl;
    }

    /// <summary>
    /// 绘制矩形
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="startLon"></param>
    /// <param name="startLat"></param>
    /// <param name="endLon"></param>
    /// <param name="endLat"></param>
    public static void DrawRect(this MapControl ctrl, double startLon, double startLat, double endLon, double endLat, bool recCallback = false)
    {
        var innerData = ctrl.Tag as InnerData;
        if (innerData.rangeItem != null)
            innerData.mMapStorage.Items.Remove(innerData.rangeItem);
        if (innerData.dotItem != null)
            innerData.mMapStorage.Items.Remove(innerData.dotItem);
        double centerLon = (startLon + endLon) / 2;
        double centerLat = (startLat + endLat) / 2;
        var size = BoundingRectItemHelper.CalculateRectangleSize(ctrl.CoordinateSystem,
            new GeoPoint(startLat, startLon),
            new GeoPoint(endLat, endLon));

        innerData.dotItem.Location = new GeoPoint(centerLat, centerLon);
        innerData.dotItem.Fill = Color.Red;
        innerData.dotItem.Size = 8;
        var rect = new MapRectangle()
        {
            CanMove = false,
            CanResize = false,
            EnableSelection = DefaultBoolean.False,
            EnableHighlighting = DefaultBoolean.True,
            Tag = "DrawRect",
            Width = size.Width,
            Height = size.Height,
            Location = new GeoPoint(startLat, startLon),
            Fill = Color.FromArgb(50, Color.FromArgb(23, 107, 209)),
            Stroke = Color.FromArgb(23, 107, 209),
            StrokeWidth = 1
        };
        innerData.rangeItem = rect;
        innerData.CurrentRect = (startLon, startLat, centerLon, centerLat, endLon, endLat, (endLon - startLon) / 2, (endLat - startLat) / 2);
        innerData.mMapStorage.Items.Add(innerData.rangeItem);
        innerData.mMapStorage.Items.Add(innerData.dotItem);
        if (recCallback)
            innerData.mOnRectChanged?.Invoke(ctrl.GetCurrentRect());
    }
    public static void DrawDtoPonit(this MapControl ctrl, string title, IEnumerable<(double lon, double lat)> lines)
    {
        string identify = "DrawPoint_";
        if (lines == null || !lines.Any()) return;
        var innerData = ctrl.Tag as InnerData;

        List<MapDot> list = new List<MapDot>();
        var color = ColorHelper.GetColor(title);
        for (int i = 0; i < lines.Count(); i++)
        {
            var p = lines.ElementAt(i);
            if (p.lon < -180 || p.lon > 180) continue;
            if (p.lon == 0 && p.lon == 0) continue;
            var mapItem = new MapDot()
            {
                EnableHighlighting = DefaultBoolean.True,
                EnableSelection = DefaultBoolean.False,
                CanMove = false,
                Visible = true,
                IsHitTestVisible = true,
                Fill = color,
                Size = 4,
                Tag = $"{identify}{title}{lines.ElementAt(i).lon}",
                Location = new GeoPoint(p.lat, p.lon),
                ToolTipPattern = $"{title}",

            };
            list.Add(mapItem);
        }

        if (!list.Any()) return;
        innerData.mMapStorage.Items.AddRange(list);
    }
    public static void DrawGdopLine(this MapControl ctrl, IEnumerable<(string wcKm, double lon, double lat)> lines)
    {
        if (lines == null || !lines.Any()) return;
        var innerData = ctrl.Tag as InnerData;
        var wcKm = lines.First().wcKm;
        var polyLine = new MapPolyline()
        {
            Stroke = ColorHelper.GetColor(wcKm),
            StrokeWidth = 2,
            IsGeodesic = true,
            CanResize = false,
            CanEdit = false,
            CanRotate = false,
            IsHitTestVisible = true,
            CanMove = false,
            Tag = $"DrawGdopLine_{wcKm}",
        };
        polyLine.TitleOptions.Pattern = wcKm;
        foreach (var item in lines)
        {
            if (double.IsNaN(item.lat) || double.IsNaN(item.lon)) continue;
            polyLine.Points.Add(new GeoPoint(item.lat, item.lon));
        }
        if (!polyLine.Points.Any()) return;
        innerData.mMapStorage.Items.Add(polyLine);
    }
    /// <summary>
    /// 绘制线
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="title"></param>
    /// <param name="lines"></param>
    /// <param name="isClear">是否清除上次绘制</param>
    public static void DrawCXLine(this MapControl ctrl, string title, IEnumerable<(double lon, double lat)> lines, bool isClear = true)
    {
        string identify = "DrawCXLine_";
        if (lines == null || !lines.Any()) return;
        var innerData = ctrl.Tag as InnerData;
        if (isClear)
        {
            var mapItem = innerData.mMapStorage.Items.Find(m => m.Tag.ToString().StartsWith(identify));
            if (mapItem != null)
            {
                innerData.mMapStorage.Items.Remove(mapItem);
            }
        }
        var polyLine = new MapPolyline()
        {
            Stroke = Color.Red,
            StrokeWidth = 3,
            CanMove = false,
            Visible = true,
            IsHitTestVisible = true,
            Tag = $"{identify}{title}",
            ToolTipPattern = title,

        };
        foreach (var item in lines)
        {
            if (double.IsNaN(item.lat) || double.IsNaN(item.lon)) continue;
            polyLine.Points.Add(new GeoPoint(item.lat, item.lon));
        }
        if (!polyLine.Points.Any()) return;
        innerData.mMapStorage.Items.Add(polyLine);
    }
    public static void DrawErrEllipse(this MapControl ctrl, double r1, double r2, IEnumerable<(double lon, double lat)> lines)
    {
        if (lines == null || !lines.Any()) return;
        var innerData = ctrl.Tag as InnerData;
        //innerData.mMapStorage.Items.Clear();
        var polyLine = new MapPolyline()
        {
            Stroke = Color.Red,
            StrokeWidth = 4,
            IsGeodesic = true,
            CanResize = false,
            CanEdit = false,
            CanRotate = false,
            IsHitTestVisible = true,
            CanMove = false,
            Tag = $"DrawErrEllipse",
        };
        //polyLine.ToolTipPattern = $"长轴:{r1:f1}km\r\n短轴:{r2:f1}km";
        foreach (var item in lines)
        {
            if (double.IsNaN(item.lat) || double.IsNaN(item.lon)) continue;
            polyLine.Points.Add(new GeoPoint(item.lat, item.lon));
        }
        if (!polyLine.Points.Any()) return;
        innerData.mMapStorage.Items.Add(polyLine);
        var callout = new DevExpress.XtraMap.MapCallout()
        {
            Text = $"R1={r1:f1}km\r\nR2={r2:f1}km",
            Location = polyLine.Points.First(),
            CanMove = false,
            IsHitTestVisible = false,
        };
        innerData.mMapStorage.Items.Add(callout);
    }

    /// <summary>
    /// 绘制GDOP多条线 两个点绘制一个线段 1和2一个线段 3和4一个线段
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="wcKm"></param>
    /// <param name="dots"></param>
    /// <param name="patterncount"></param>
    public static void DrawGdopLineTwo(this MapControl ctrl, string wcKm, IEnumerable<(double lon, double lat)> dots, int patterncount)
    {
        if (dots == null || !dots.Any()) return;
        string identify = "DrawGdopLine_";
        var innerData = ctrl.Tag as InnerData;
        //多条线 两个点绘制一个线段 1和2一个线段 3和4一个线段
        List<MapPolyline> polylines = new List<MapPolyline>();
        int index = 0;
        int count = dots.Count();

        MapPolyline polyLine = null;
        foreach (var item in dots)
        {
            if (index % 2 == 0)
            {
                if (polyLine != null)//添加线段
                {
                    polylines.Add(polyLine);
                }
                polyLine = new MapPolyline()
                {
                    Stroke = ColorHelper.GetColor(wcKm),
                    StrokeWidth = 2,
                    IsGeodesic = true,
                    CanResize = false,
                    CanEdit = false,
                    CanRotate = false,
                    IsHitTestVisible = true,
                    CanMove = false,
                    Tag = $"{identify}{wcKm}",
                };

            }
            polyLine.Points.Add(new GeoPoint(item.lat, item.lon));
            if (patterncount == index)//提示公里信息
            {
                polyLine.TitleOptions.Pattern = wcKm;
            }
            index++;
            if (index == count)//添加最后一个线段
            {
                polylines.Add(polyLine);
            }

        }
        if (!polyLine.Points.Any()) return;
        innerData.mMapStorage.Items.AddRange(polylines);

    }
    /// <summary>
    /// 绘制半径圆
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="lat"></param>
    /// <param name="lon"></param>
    /// <param name="radius"></param>
    public static void DrawRadiusRound(this MapControl ctrl, double lat, double lon, int radius)
    {
        var innerData = ctrl.Tag as InnerData;
        try
        {
            if (radius <= 0)
                return;

            CoordPointCollection latLngs = new CoordPointCollection();
            MyLatLng centerLatLng = new MyLatLng(lon, lat);

            // 0 - 360度 寻找半径为radius，圆心为centerP的圆上点的经纬度
            for (int i = 0; i < 360; i++)
            {
                //获取目标经纬度
                MyLatLng tempLatLng = getMyLatLng(centerLatLng, radius, i);
                //将自定义的经纬度类 转换成 标准经纬度类
                CoordPoint p = new GeoPoint(tempLatLng.m_Latitude, tempLatLng.m_Longitude);
                latLngs.Add(p);
            }

            //安全性检查
            if (latLngs.Count < 20)
            {
                return;
            }

            //通过绘制多边形的方式绘制圆
            MapPolygon gpol = new MapPolygon();
            gpol.Points = latLngs;
            gpol.Stroke = Color.Red;
            gpol.Fill = Color.FromArgb(50, Color.Red);
            gpol.IsHitTestVisible = true;
            innerData.mMapStorageFixed.Items.Add(gpol);
        }
        catch (Exception ex)
        {
            //Dialog.Error(ex);
        }
    }

    /// <summary>
    /// 度 转换成 弧度
    /// </summary>
    /// <param name="degrees"></param>
    /// <returns></returns>
    public static double DegreesToRadians(double degrees)
    {
        const double degToRadFactor = Math.PI / 180;
        return degrees * degToRadFactor;
    }

    /// <summary>
    /// 计算两个点之间的距离
    /// </summary>
    /// <param name="startlon">开始经度</param>
    /// <param name="startlat">开始纬度</param>
    /// <param name="endlon">结束经度</param>
    /// <param name="endlat">结束纬度</param>
    /// <returns></returns>
    public static double CalcLineKm(double startlon, double startlat, double endlon, double endlat)
    {
        GeoPoint startPoint = new GeoPoint() { Longitude = startlon, Latitude = startlat };
        GeoPoint endPoint = new GeoPoint() { Longitude = endlon, Latitude = endlat };
        double result = 0;
        MapSize sizeInKm = new SphericalMercatorProjection().GeoToKilometersSize(startPoint, new MapSize(Math.Abs(startPoint.Longitude - endPoint.Longitude), Math.Abs(startPoint.Latitude - endPoint.Latitude)));
        result = Math.Sqrt(sizeInKm.Width * sizeInKm.Width + sizeInKm.Height * sizeInKm.Height);
        return result;
    }

    /// <summary>
    /// 计算方向线坐标
    /// </summary>
    /// <param name="lon">经度</param>
    /// <param name="lat">纬度</param>
    /// <param name="deg"> 艏向角 角度制</param>
    /// <param name="dis">长度 m</param>
    /// <returns></returns>
    public static (double, double) CalcSituation(double lon, double lat, double deg, double dis)
    {
        double arc = 6371.393 * 1000;       //地球平均半径
        double rad = deg * (Math.PI / 180); //角度转弧度
        double c_lng = lon + dis * Math.Sin(rad) / (arc * Math.Cos(lat) * 2 * Math.PI / 360);

        double c_lat = lat + dis * Math.Cos(rad) / (arc * 2 * Math.PI / 360);

        return (c_lng, c_lat);  //方向上的另一点坐标
    }

    /**
    * 求B点经纬度
    * @param A 已知点的经纬度，
    * @param distance   AB两地的距离  单位km
    * @param angle  AB连线与正北方向的夹角（0~360）
    * @return  B点的经纬度
*/
    private static MyLatLng getMyLatLng(MyLatLng A, double distance, double angle)
    {
        double dx = distance * 1000 * Math.Sin(DegreesToRadians(angle));
        double dy = distance * 1000 * Math.Cos(DegreesToRadians(angle));

        double bjd = (dx / A.Ed + A.m_RadLo) * 180 / Math.PI;
        double bwd = (dy / A.Ec + A.m_RadLa) * 180 / Math.PI;
        return new MyLatLng(bjd, bwd);
    }
    public static void ClearRect(this MapControl ctrl)
    {
        var innerDate = ctrl.Tag as InnerData;
        if (innerDate.rangeItem != null)
            innerDate.mMapStorage.Items.Remove(innerDate.rangeItem);
        if (innerDate.dotItem != null)
            innerDate.mMapStorage.Items.Remove(innerDate.dotItem);
    }
    /// <summary>
    /// 获取地图框选的范围信息(可能为null)
    /// </summary>
    /// <param name="ctrl"></param>
    /// <returns></returns>
    public static (double starLon, double startLat, double centerLon, double centerLat,
        double endLon, double endLat, double lonRange, double latRange) GetCurrentRect(this MapControl ctrl)
    {
        var innerData = ctrl.Tag as InnerData;
        return innerData.CurrentRect;
    }

    /// <summary>
    /// 获取地图瓦片图层
    /// </summary>
    /// <param name="ctrl"></param>
    /// <returns></returns>
    public static ImageLayer GetImageLayer(this MapControl ctrl)
    {
        if (ctrl.Layers == null) return null;
        return (ImageLayer)ctrl.Layers["ImageTileLayer"];
    }

    /// <summary>
    /// 获取地图绘制图层
    /// </summary>
    /// <param name="ctrl"></param>
    /// <returns></returns>
    public static VectorItemsLayer GetDrawLayer(this MapControl ctrl)
    {
        return (VectorItemsLayer)ctrl.Layers["DrawLayer"];
    }

    /// <summary>
    /// 获取地图绘制图层
    /// </summary>
    /// <param name="ctrl"></param>
    /// <returns></returns>
    public static VectorItemsLayer GetPosLayer(this MapControl ctrl)
    {
        return (VectorItemsLayer)ctrl.Layers["PosLayer"];
    }

    /// <summary>
    /// 获取地图绘制图层的数据仓库
    /// </summary>
    /// <param name="ctrl"></param>
    /// <returns></returns>
    public static MapItemStorage GetDrawStorage(this MapControl ctrl)
    {
        var innerData = ctrl.Tag as InnerData;
        return innerData.mMapStorage;
    }

    /// <summary>
    /// 设置地图类型.默认为Normal
    /// 该方法为所有MapControl实例设置地图类型
    /// </summary>
    /// <param name="ctrl"></param>
    /// <param name="mapType"></param>
    public static void SetMapType(GoogleMapType mapType)
    {
        mMapType = mapType;
        listMapCtrl.ForEach(t =>
        {
            if (t.GetImageLayer() == null) return;
            var provider = t.GetImageLayer().DataProvider as MapTileDataProviderBase;
            provider?.ClearCache();
            t.Refresh();
        });

    }

    #region private
    private static void DrawRect_MouseMove(object sender, MouseEventArgs e)
    {
        var innerData = (sender as MapControl).Tag as InnerData;
        if (!innerData.drawingRect) return;
        innerData.dotItem.Location = innerData.rangeItem.GetCenter();

        var startLon = Math.Round(innerData.rangeItem.Location.GetX(), 3);
        var startLat = Math.Round(innerData.rangeItem.Location.GetY(), 3);
        if (startLon >= 180)
        {
            startLon -= 360;
        }
        if (startLon <= -180)
        {
            startLon += 360;
        }
        var center = innerData.rangeItem.GetCenter();
        var centerLon = Math.Round(center.GetX(), 3);
        if (centerLon >= 180)
        {
            centerLon -= 360;
        }
        if (centerLon <= -180)
        {
            centerLon += 360;
        }

        var centerLat = Math.Round(center.GetY(), 3);
        double endLon;
        if (centerLon < 0 && startLon > 0)
            endLon = startLon + 2 * (centerLon + 360 - startLon);
        else
            endLon = startLon + 2 * (centerLon - startLon);
        var endLat = startLat + 2 * (centerLat - startLat);

        var StartLon = Math.Min(startLon, endLon);
        var StartLat = Math.Min(startLat, endLat);
        var CenterLon = centerLon;
        var CenterLat = centerLat;
        var EndLon = Math.Max(startLon, endLon);
        var EndLat = Math.Max(startLat, endLat);
        double centerLonNew = CenterLon % 360;
        CenterLon = centerLonNew;
        //double LonRange = Math.Round((EndLon - StartLon) / 2, 3);
        //double LatRange = Math.Round((EndLat - StartLat) / 2, 3);
        double LonRange = Math.Round((EndLon - StartLon), 3);
        double LatRange = Math.Round((EndLat - StartLat), 3);
        if (LonRange >= 360)
        {
        }
        innerData.CurrentRect = (StartLon, StartLat, CenterLon, CenterLat, EndLon, EndLat, LonRange, LatRange);
        innerData.mOnRectChanged?.Invoke(innerData.CurrentRect);
    }

    private static void ExportImg_ItemClick(object sender, ItemClickEventArgs e)
    {
        var ctrl = e.Item.Tag as MapControl;
        using (var dialog = new SaveFileDialog())
        {
            dialog.Filter = "PNG图片|*.png";
            dialog.AddExtension = true;
            dialog.FileName = $"Map{DateTime.Now:yyyyMMddHHmmss}.png";
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                ctrl.ExportToImage(dialog.FileName, ImageFormat.Png);
            }
        }
    }
    private static void ExportCsv_ItemClick(object sender, ItemClickEventArgs e)
    {
        var ctrl = e.Item.Tag as MapControl;
        using (var dialog = new SaveFileDialog())
        {
            dialog.Filter = "CSV文件|*.csv";
            dialog.AddExtension = true;
            dialog.FileName = $"Pos{DateTime.Now:yyyyMMddHHmmss}.xlsx";
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                ctrl.ExportToXlsx(dialog.FileName);
            }
        }
    }
    private static void ClearDrawObj(this MapControl ctrl)
    {
        ctrl.Invoke(new Action(() =>
        {
            try
            {
                var innerData = ctrl.Tag as InnerData;
                ctrl.MapEditor.SetTransformMode(MapItemTransform.None);
                innerData.drawingRect = false;
                innerData.CurrentRect = (0, 0, 0, 0, 0, 0, 0, 0);
                innerData.rangeItem = null;
                if (innerData.mMapStorage != null && innerData.mMapStorage.Items.Any())
                {
                    innerData.mMapStorage.Items.Clear();
                }
            }
            catch (Exception ex)
            {
            }
        }));

    }
    private static void DistanceLine_ItemClick(object sender, ItemClickEventArgs e)
    {

        var ctrl = e.Item.Tag as MapControl;
        var innerData = ctrl.Tag as InnerData;
        ctrl.MapEditor.SetEditMode();
        var items = innerData.mMapStorage.Items.ToArray();
        foreach (var item in items)
        {
            if (item.Tag != null && item.Tag.ToString() == "DrawDistanceLine")
                innerData.mMapStorage.Items.Remove(item);
        }
        if (innerData.distinctPath != null)
        {
            innerData.distinctPath.Points.Clear();
        }
        innerData.distinctPath = new MapPolyline()
        {
            Stroke = Color.FromArgb(127, 255, 0, 199),
            StrokeWidth = 2,
            IsGeodesic = true,
            CanResize = false,
            CanEdit = false,
            CanRotate = false,
            IsHitTestVisible = false,
            CanMove = true,
            Tag = "DrawDistanceLine"

        };
        innerData.mMapStorage.Items.Add(innerData.distinctPath);
        innerData.hoverPoint = new MapDot() { CanResize = false, CanMove = false, IsHitTestVisible = false, Tag = "DrawDistanceLine", Size = 8 };
        innerData.hoverPoint.Fill = ColorHelper.GetColor(innerData.hoverPoint.Tag.ToString());
        innerData.mMapStorage.Items.Add(innerData.hoverPoint);
        innerData.hoverTip = CreateHoverTip();
        ctrl.MouseClick += AddDistinctPoint;
        ctrl.MouseMove += MovingDistinct;
        ctrl.MouseLeave += MapControl_MouseLeave;
        ctrl.MouseEnter += MapControl_MouseEnter;
        ctrl.DoubleClick += EndDistinct;
    }

    private static void MarkDot_ItemClick(object sender, ItemClickEventArgs e)
    {
        var ctrl = e.Item.Tag as MapControl;
        ctrl.MapEditor.SetTransformMode(MapItemTransform.None);
        var innerData = ctrl.Tag as InnerData;
        innerData.drawingRect = false;
        using (var frm = new MapEditPointView())
        {
            if (frm.ShowDialog() != DialogResult.OK) return;
            var locPoint = new GeoPoint(frm.Lat, frm.Lon);
            MapCustomElement cusItem = new MapCustomElement()
            {
                Location = locPoint,
                UseAnimation = true,
                CanMove = false,
                EnableHighlighting = DefaultBoolean.True,
                EnableSelection = DefaultBoolean.False,
                Text = "",
                ToolTipPattern = $"{frm.Caption}",
                SvgImage = SvgHelper.CreatePentagram(),
                SvgImageSize = new Size(32, 32),
                TextAlignment = DevExpress.XtraMap.TextAlignment.BottomCenter,
                Tag = "DrawMarkDot"
            };
            innerData.mMapStorage.Items.Add(cusItem);
        }
    }
    private static ToolTipControllerShowEventArgs CreateHoverTip()
    {
        ToolTipTitleItem titleItem1 = new ToolTipTitleItem() { Text = $"0千米" };
        titleItem1.Appearance.ForeColor = SystemColors.GrayText;
        titleItem1.Appearance.Font = new Font(AppearanceObject.DefaultFont.FontFamily, 12, FontStyle.Bold);

        SuperToolTip superToolTip = new SuperToolTip();
        superToolTip.Items.Add(titleItem1);

        ToolTipSeparatorItem sepItem = new ToolTipSeparatorItem();
        superToolTip.Items.Add(sepItem);

        ToolTipItem textItem = new ToolTipItem() { Text = "单击添加测距点，双击结束测距" };
        superToolTip.Items.Add(textItem);
        ToolTipControllerShowEventArgs arg = new ToolTipControllerShowEventArgs();
        arg.ShowBeak = true;
        arg.SuperTip = superToolTip;
        return arg;
    }
    private static void MapControl_MouseEnter(object sender, EventArgs e)
    {
        var innerData = (sender as MapControl).Tag as InnerData;
        innerData.hoverPoint.Visible = true;
    }
    private static void MapControl_MouseLeave(object sender, EventArgs e)
    {
        var innerData = (sender as MapControl).Tag as InnerData;
        innerData.hoverPoint.Visible = false;
    }
    private static void AddDistinctPoint(object sender, MouseEventArgs e)
    {
        var innerData = (sender as MapControl).Tag as InnerData;
        var ctrl = sender as MapControl;
        MapCallout disItem = new MapCallout { IsHitTestVisible = false, CanMove = false };
        disItem.Location = ctrl.ScreenPointToCoordPoint(e.Location);
        disItem.Text = $"{CalcLineKm(innerData):F2}千米";
        disItem.Tag = "DrawDistanceLine";
        innerData.mMapStorage.Items.Add(disItem);
        innerData.distinctPath.Points.Add(innerData.hoverPoint.Location);
        innerData.hoverPoint = new MapDot() { CanResize = false, CanMove = false, IsHitTestVisible = false, Tag = "DrawDistanceLine", Size = 8 };
        innerData.hoverPoint.Location = ctrl.ScreenPointToCoordPoint(e.Location);
        innerData.hoverPoint.Fill = ColorHelper.GetColor(innerData.hoverPoint.Tag.ToString());
        innerData.mMapStorage.Items.Add(innerData.hoverPoint);
        innerData.distinctPath.Points.Add(innerData.hoverPoint.Location);
    }
    private static void MovingDistinct(object sender, MouseEventArgs e)
    {
        var innerData = (sender as MapControl).Tag as InnerData;
        var ctrl = sender as MapControl;
        var itemPoint = ctrl.ScreenPointToCoordPoint(e.Location);
        innerData.hoverPoint.Location = itemPoint;

        if (innerData.distinctPath.Points.Count > 0)
        {
            ctrl.MapEditor.SetEditMode();
            innerData.distinctPath.Points[innerData.distinctPath.Points.Count - 1] = itemPoint;
            (innerData.hoverTip.SuperTip.Items[0] as ToolTipTitleItem).Text = $"{CalcLineKm(innerData):F2}千米";
            innerData.mapToolTip.ShowHint(innerData.hoverTip, ctrl.PointToScreen(e.Location));
        }
    }
    private static double CalcLineKm(InnerData data)
    {
        double result = 0;
        if (data.distinctPath.Points.Count < 2) return result;
        for (int i = 0; i < data.distinctPath.Points.Count - 1; i++)
        {
            var startPoint = data.distinctPath.Points[i] as GeoPoint;
            var endPoint = data.distinctPath.Points[i + 1] as GeoPoint;
            MapSize sizeInKm = new SphericalMercatorProjection().GeoToKilometersSize(startPoint, new MapSize(Math.Abs(startPoint.Longitude - endPoint.Longitude), Math.Abs(startPoint.Latitude - endPoint.Latitude)));
            double partlength = Math.Sqrt(sizeInKm.Width * sizeInKm.Width + sizeInKm.Height * sizeInKm.Height);
            result += partlength;
        }

        return result;
    }

    public static void ClearMap(this MapControl ctrl)
    {
        var innerData = ctrl.Tag as InnerData;
        innerData.CurrentRect = (0, 0, 0, 0, 0, 0, 0, 0);
        innerData.mMapStorage?.Items.Clear();
    }
    private static void EndDistinct(object sender, EventArgs e)
    {
        var ctrl = sender as MapControl;
        var innerData = ctrl.Tag as InnerData;
        innerData.mapToolTip.HideHint();
        ctrl.MouseClick -= AddDistinctPoint;
        ctrl.MouseMove -= MovingDistinct;
        ctrl.DoubleClick -= EndDistinct;
        ctrl.MouseLeave -= MapControl_MouseLeave;
        ctrl.MouseEnter -= MapControl_MouseEnter;
    }
    class MapEditPointView : DevExpress.XtraEditors.XtraForm
    {
        private System.ComponentModel.IContainer components = null;
        private DevExpress.XtraLayout.LayoutControl layoutControl1;
        private DevExpress.XtraLayout.LayoutControlGroup Root;
        private DevExpress.XtraLayout.LayoutControlItem layoutControlItem1;
        private DevExpress.XtraLayout.EmptySpaceItem emptySpaceItem1;
        private DevExpress.XtraLayout.LayoutControlItem layoutControlItem2;
        private DevExpress.XtraEditors.ButtonEdit txtLon;
        private DevExpress.XtraEditors.ButtonEdit txtLat;
        private DevExpress.XtraEditors.TextEdit txtCaption;
        private DevExpress.XtraLayout.LayoutControlItem layoutControlItem5;
        private DevExpress.XtraEditors.SimpleButton btnCancel;
        private DevExpress.XtraEditors.SimpleButton btnOk;
        private DevExpress.XtraLayout.LayoutControlItem layoutControlItem3;
        private DevExpress.XtraLayout.LayoutControlItem layoutControlItem6;
        private DevExpress.XtraEditors.DXErrorProvider.DXErrorProvider dxErrorProvider1;
        private DevExpress.XtraLayout.EmptySpaceItem emptySpaceItem2;
        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            DevExpress.XtraEditors.Controls.EditorButtonImageOptions editorButtonImageOptions1 = new DevExpress.XtraEditors.Controls.EditorButtonImageOptions();
            DevExpress.Utils.SerializableAppearanceObject serializableAppearanceObject1 = new DevExpress.Utils.SerializableAppearanceObject();
            DevExpress.Utils.SerializableAppearanceObject serializableAppearanceObject2 = new DevExpress.Utils.SerializableAppearanceObject();
            DevExpress.Utils.SerializableAppearanceObject serializableAppearanceObject3 = new DevExpress.Utils.SerializableAppearanceObject();
            DevExpress.Utils.SerializableAppearanceObject serializableAppearanceObject4 = new DevExpress.Utils.SerializableAppearanceObject();
            DevExpress.XtraEditors.Controls.EditorButtonImageOptions editorButtonImageOptions2 = new DevExpress.XtraEditors.Controls.EditorButtonImageOptions();
            DevExpress.Utils.SerializableAppearanceObject serializableAppearanceObject5 = new DevExpress.Utils.SerializableAppearanceObject();
            DevExpress.Utils.SerializableAppearanceObject serializableAppearanceObject6 = new DevExpress.Utils.SerializableAppearanceObject();
            DevExpress.Utils.SerializableAppearanceObject serializableAppearanceObject7 = new DevExpress.Utils.SerializableAppearanceObject();
            DevExpress.Utils.SerializableAppearanceObject serializableAppearanceObject8 = new DevExpress.Utils.SerializableAppearanceObject();
            this.layoutControl1 = new DevExpress.XtraLayout.LayoutControl();
            this.txtCaption = new DevExpress.XtraEditors.TextEdit();
            this.txtLon = new DevExpress.XtraEditors.ButtonEdit();
            this.txtLat = new DevExpress.XtraEditors.ButtonEdit();
            this.Root = new DevExpress.XtraLayout.LayoutControlGroup();
            this.layoutControlItem1 = new DevExpress.XtraLayout.LayoutControlItem();
            this.emptySpaceItem1 = new DevExpress.XtraLayout.EmptySpaceItem();
            this.layoutControlItem2 = new DevExpress.XtraLayout.LayoutControlItem();
            this.layoutControlItem5 = new DevExpress.XtraLayout.LayoutControlItem();
            this.btnOk = new DevExpress.XtraEditors.SimpleButton();
            this.layoutControlItem3 = new DevExpress.XtraLayout.LayoutControlItem();
            this.btnCancel = new DevExpress.XtraEditors.SimpleButton();
            this.layoutControlItem6 = new DevExpress.XtraLayout.LayoutControlItem();
            this.dxErrorProvider1 = new DevExpress.XtraEditors.DXErrorProvider.DXErrorProvider(this.components);
            this.emptySpaceItem2 = new DevExpress.XtraLayout.EmptySpaceItem();
            ((System.ComponentModel.ISupportInitialize)(this.layoutControl1)).BeginInit();
            this.layoutControl1.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(this.txtCaption.Properties)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.txtLon.Properties)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.txtLat.Properties)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.Root)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.layoutControlItem1)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.emptySpaceItem1)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.layoutControlItem2)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.layoutControlItem5)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.layoutControlItem3)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.layoutControlItem6)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.dxErrorProvider1)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.emptySpaceItem2)).BeginInit();
            this.SuspendLayout();
            // 
            // layoutControl1
            // 
            this.layoutControl1.Controls.Add(this.btnCancel);
            this.layoutControl1.Controls.Add(this.btnOk);
            this.layoutControl1.Controls.Add(this.txtCaption);
            this.layoutControl1.Controls.Add(this.txtLon);
            this.layoutControl1.Controls.Add(this.txtLat);
            this.layoutControl1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.layoutControl1.Location = new System.Drawing.Point(0, 0);
            this.layoutControl1.Name = "layoutControl1";
            this.layoutControl1.OptionsCustomizationForm.DesignTimeCustomizationFormPositionAndSize = new System.Drawing.Rectangle(689, 0, 650, 400);
            this.layoutControl1.Root = this.Root;
            this.layoutControl1.Size = new System.Drawing.Size(272, 208);
            this.layoutControl1.TabIndex = 0;
            this.layoutControl1.Text = "layoutControl1";
            // 
            // txtCaption
            // 
            this.txtCaption.Location = new System.Drawing.Point(12, 29);
            this.txtCaption.Name = "txtCaption";
            this.txtCaption.Properties.Appearance.Options.UseTextOptions = true;
            this.txtCaption.Properties.Appearance.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Near;
            this.txtCaption.Properties.AutoHeight = false;
            this.txtCaption.Properties.MaxLength = 30;
            this.txtCaption.Size = new System.Drawing.Size(248, 22);
            this.txtCaption.StyleController = this.layoutControl1;
            this.txtCaption.TabIndex = 9;
            // 
            // txtLon
            // 
            this.txtLon.Location = new System.Drawing.Point(12, 80);
            this.txtLon.Name = "txtLon";
            this.txtLon.Properties.Appearance.Options.UseTextOptions = true;
            this.txtLon.Properties.Appearance.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Near;
            this.txtLon.Properties.AutoHeight = false;
            this.txtLon.Properties.Buttons.AddRange(new DevExpress.XtraEditors.Controls.EditorButton[] {
            new DevExpress.XtraEditors.Controls.EditorButton(DevExpress.XtraEditors.Controls.ButtonPredefines.Glyph, "°", -1, false, true, false, editorButtonImageOptions1, new DevExpress.Utils.KeyShortcut(System.Windows.Forms.Keys.None), serializableAppearanceObject1, serializableAppearanceObject2, serializableAppearanceObject3, serializableAppearanceObject4, "", null, null, DevExpress.Utils.ToolTipAnchor.Default)});
            this.txtLon.Size = new System.Drawing.Size(248, 22);
            this.txtLon.StyleController = this.layoutControl1;
            this.txtLon.TabIndex = 4;
            // 
            // txtLat
            // 
            this.txtLat.Location = new System.Drawing.Point(12, 131);
            this.txtLat.Name = "txtLat";
            this.txtLat.Properties.Appearance.Options.UseTextOptions = true;
            this.txtLat.Properties.Appearance.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Near;
            this.txtLat.Properties.AutoHeight = false;
            this.txtLat.Properties.Buttons.AddRange(new DevExpress.XtraEditors.Controls.EditorButton[] {
            new DevExpress.XtraEditors.Controls.EditorButton(DevExpress.XtraEditors.Controls.ButtonPredefines.Glyph, "°", -1, false, true, false, editorButtonImageOptions2, new DevExpress.Utils.KeyShortcut(System.Windows.Forms.Keys.None), serializableAppearanceObject5, serializableAppearanceObject6, serializableAppearanceObject7, serializableAppearanceObject8, "", null, null, DevExpress.Utils.ToolTipAnchor.Default)});
            this.txtLat.Size = new System.Drawing.Size(248, 22);
            this.txtLat.StyleController = this.layoutControl1;
            this.txtLat.TabIndex = 5;
            // 
            // Root
            // 
            this.Root.EnableIndentsWithoutBorders = DevExpress.Utils.DefaultBoolean.True;
            this.Root.GroupBordersVisible = false;
            this.Root.Items.AddRange(new DevExpress.XtraLayout.BaseLayoutItem[] {
            this.layoutControlItem1,
            this.emptySpaceItem1,
            this.layoutControlItem5,
            this.layoutControlItem2,
            this.layoutControlItem3,
            this.layoutControlItem6,
            this.emptySpaceItem2});
            this.Root.Name = "Root";
            this.Root.Size = new System.Drawing.Size(272, 208);
            this.Root.TextVisible = false;
            // 
            // layoutControlItem1
            // 
            this.layoutControlItem1.Control = this.txtLon;
            this.layoutControlItem1.Location = new System.Drawing.Point(0, 43);
            this.layoutControlItem1.MaxSize = new System.Drawing.Size(0, 51);
            this.layoutControlItem1.MinSize = new System.Drawing.Size(54, 51);
            this.layoutControlItem1.Name = "layoutControlItem1";
            this.layoutControlItem1.Padding = new DevExpress.XtraLayout.Utils.Padding(2, 2, 10, 2);
            this.layoutControlItem1.Size = new System.Drawing.Size(252, 51);
            this.layoutControlItem1.SizeConstraintsType = DevExpress.XtraLayout.SizeConstraintsType.Custom;
            this.layoutControlItem1.Text = "经度";
            this.layoutControlItem1.TextLocation = DevExpress.Utils.Locations.Top;
            this.layoutControlItem1.TextSize = new System.Drawing.Size(24, 14);
            // 
            // emptySpaceItem1
            // 
            this.emptySpaceItem1.AllowHotTrack = false;
            this.emptySpaceItem1.Location = new System.Drawing.Point(0, 162);
            this.emptySpaceItem1.MaxSize = new System.Drawing.Size(0, 26);
            this.emptySpaceItem1.MinSize = new System.Drawing.Size(104, 26);
            this.emptySpaceItem1.Name = "emptySpaceItem1";
            this.emptySpaceItem1.Size = new System.Drawing.Size(113, 26);
            this.emptySpaceItem1.SizeConstraintsType = DevExpress.XtraLayout.SizeConstraintsType.Custom;
            this.emptySpaceItem1.TextSize = new System.Drawing.Size(0, 0);
            // 
            // layoutControlItem2
            // 
            this.layoutControlItem2.Control = this.txtLat;
            this.layoutControlItem2.Location = new System.Drawing.Point(0, 94);
            this.layoutControlItem2.MaxSize = new System.Drawing.Size(0, 51);
            this.layoutControlItem2.MinSize = new System.Drawing.Size(54, 51);
            this.layoutControlItem2.Name = "layoutControlItem2";
            this.layoutControlItem2.Padding = new DevExpress.XtraLayout.Utils.Padding(2, 2, 10, 2);
            this.layoutControlItem2.Size = new System.Drawing.Size(252, 51);
            this.layoutControlItem2.SizeConstraintsType = DevExpress.XtraLayout.SizeConstraintsType.Custom;
            this.layoutControlItem2.Text = "纬度";
            this.layoutControlItem2.TextLocation = DevExpress.Utils.Locations.Top;
            this.layoutControlItem2.TextSize = new System.Drawing.Size(24, 14);
            // 
            // layoutControlItem5
            // 
            this.layoutControlItem5.Control = this.txtCaption;
            this.layoutControlItem5.Location = new System.Drawing.Point(0, 0);
            this.layoutControlItem5.MaxSize = new System.Drawing.Size(0, 43);
            this.layoutControlItem5.MinSize = new System.Drawing.Size(54, 43);
            this.layoutControlItem5.Name = "layoutControlItem5";
            this.layoutControlItem5.Size = new System.Drawing.Size(252, 43);
            this.layoutControlItem5.SizeConstraintsType = DevExpress.XtraLayout.SizeConstraintsType.Custom;
            this.layoutControlItem5.Text = "标题";
            this.layoutControlItem5.TextLocation = DevExpress.Utils.Locations.Top;
            this.layoutControlItem5.TextSize = new System.Drawing.Size(24, 14);
            // 
            // btnOk
            // 
            this.btnOk.Location = new System.Drawing.Point(125, 174);
            this.btnOk.Name = "btnOk";
            this.btnOk.Size = new System.Drawing.Size(65, 22);
            this.btnOk.StyleController = this.layoutControl1;
            this.btnOk.TabIndex = 10;
            this.btnOk.Text = "确定";
            this.btnOk.Click += new System.EventHandler(this.btnOk_Click);
            // 
            // layoutControlItem3
            // 
            this.layoutControlItem3.Control = this.btnOk;
            this.layoutControlItem3.Location = new System.Drawing.Point(113, 162);
            this.layoutControlItem3.MaxSize = new System.Drawing.Size(69, 26);
            this.layoutControlItem3.MinSize = new System.Drawing.Size(69, 26);
            this.layoutControlItem3.Name = "layoutControlItem3";
            this.layoutControlItem3.Size = new System.Drawing.Size(69, 26);
            this.layoutControlItem3.SizeConstraintsType = DevExpress.XtraLayout.SizeConstraintsType.Custom;
            this.layoutControlItem3.TextSize = new System.Drawing.Size(0, 0);
            this.layoutControlItem3.TextVisible = false;
            // 
            // btnCancel
            // 
            this.btnCancel.Location = new System.Drawing.Point(194, 174);
            this.btnCancel.Name = "btnCancel";
            this.btnCancel.Size = new System.Drawing.Size(66, 22);
            this.btnCancel.StyleController = this.layoutControl1;
            this.btnCancel.TabIndex = 11;
            this.btnCancel.Text = "取消";
            this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
            // 
            // layoutControlItem6
            // 
            this.layoutControlItem6.Control = this.btnCancel;
            this.layoutControlItem6.Location = new System.Drawing.Point(182, 162);
            this.layoutControlItem6.MaxSize = new System.Drawing.Size(70, 26);
            this.layoutControlItem6.MinSize = new System.Drawing.Size(70, 26);
            this.layoutControlItem6.Name = "layoutControlItem6";
            this.layoutControlItem6.Size = new System.Drawing.Size(70, 26);
            this.layoutControlItem6.SizeConstraintsType = DevExpress.XtraLayout.SizeConstraintsType.Custom;
            this.layoutControlItem6.TextSize = new System.Drawing.Size(0, 0);
            this.layoutControlItem6.TextVisible = false;
            // 
            // dxErrorProvider1
            // 
            this.dxErrorProvider1.ContainerControl = this;
            // 
            // emptySpaceItem2
            // 
            this.emptySpaceItem2.AllowHotTrack = false;
            this.emptySpaceItem2.Location = new System.Drawing.Point(0, 145);
            this.emptySpaceItem2.MinSize = new System.Drawing.Size(104, 1);
            this.emptySpaceItem2.Name = "emptySpaceItem2";
            this.emptySpaceItem2.Size = new System.Drawing.Size(252, 17);
            this.emptySpaceItem2.SizeConstraintsType = DevExpress.XtraLayout.SizeConstraintsType.Custom;
            this.emptySpaceItem2.TextSize = new System.Drawing.Size(0, 0);
            // 
            // MapEditPointView
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 14F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(272, 208);
            this.Controls.Add(this.layoutControl1);
            this.IconOptions.ShowIcon = false;
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.Name = "MapEditPointView";
            this.ShowInTaskbar = false;
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
            this.Text = "标点";
            ((System.ComponentModel.ISupportInitialize)(this.layoutControl1)).EndInit();
            this.layoutControl1.ResumeLayout(false);
            ((System.ComponentModel.ISupportInitialize)(this.txtCaption.Properties)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.txtLon.Properties)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.txtLat.Properties)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.Root)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.layoutControlItem1)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.emptySpaceItem1)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.layoutControlItem2)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.layoutControlItem5)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.layoutControlItem3)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.layoutControlItem6)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.dxErrorProvider1)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.emptySpaceItem2)).EndInit();
            this.ResumeLayout(false);

        }
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        public MapEditPointView()
        {
            InitializeComponent();
        }

        public string Caption
        {
            get
            {
                return txtCaption.Text.Trim();
            }
            set
            {
                txtCaption.Text = value;
            }
        }

        public double Lon
        {
            get
            {
                return double.Parse(txtLon.Text.Trim());
            }
            set
            {
                txtLon.Text = value.ToString();
            }
        }

        public double Lat
        {
            get
            {
                return double.Parse(txtLat.Text.Trim());
            }
            set
            {
                txtLat.Text = value.ToString();
            }
        }

        private void btnOk_Click(object sender, EventArgs e)
        {
            dxErrorProvider1.ClearErrors();
            double lon, lat;
            if (!double.TryParse(txtLon.Text, out lon))
            {
                dxErrorProvider1.SetError(txtLon, "请设置正确的经度");
                return;
            }
            if (!double.TryParse(txtLat.Text, out lat))
            {
                dxErrorProvider1.SetError(txtLat, "请设置正确的纬度");
                return;
            }
            if (lon < -180 || lon > 180)
            {
                dxErrorProvider1.SetError(txtLon, "经度范围[-180,180]");
                return;
            }
            if (lat < -90 || lat > 90)
            {
                dxErrorProvider1.SetError(txtLat, "纬度范围[-90,90]");
                return;
            }
            this.DialogResult = DialogResult.OK;
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.Cancel;
        }
    }
    #endregion
    #region 半径圆
    public class MyLatLng
    {
        public double Rc = 6378137;     //赤道半径
        public double Rj = 6356725;     //极半径
        public double m_LoDeg, m_LoMin, m_LoSec;
        public double m_LaDeg, m_LaMin, m_LaSec;
        public double m_Longitude, m_Latitude;
        public double m_RadLo, m_RadLa;
        public double Ec;
        public double Ed;
        public MyLatLng(double longitude, double latitude)
        {
            m_LoDeg = (int)longitude;
            m_LoMin = (int)((longitude - m_LoDeg) * 60);
            m_LoSec = (longitude - m_LoDeg - m_LoMin / 60) * 3600;

            m_LaDeg = (int)latitude;
            m_LaMin = (int)((latitude - m_LaDeg) * 60);
            m_LaSec = (latitude - m_LaDeg - m_LaMin / 60) * 3600;

            m_Longitude = longitude;
            m_Latitude = latitude;
            m_RadLo = longitude * Math.PI / 180;
            m_RadLa = latitude * Math.PI / 180;
            Ec = Rj + (Rc - Rj) * (90 - m_Latitude) / 90;
            Ed = Ec * Math.Cos(m_RadLa);
        }
    }
    #endregion
    #region ImageLayer数据源接口实现(本地和Http接口)
    class ImageTileSource : IImageTileSource
    {
        SQLiteConnection con;
        public ImageTileSource()
        {
            var files = Directory.GetFiles(Application.StartupPath, "Data.gmdb", SearchOption.AllDirectories);
            if (files.Length > 0)
            {
                try
                {
                    conStr = string.Format(conStr, files[0]);
                    con = new SQLiteConnection(conStr);
                    con.Open();
                }
                catch
                {
                    conStr = null;
                    Console.WriteLine("Data.gmdb文件读取出错!");
                }
            }
            else
            {
                conStr = null;
            }
        }
        public string Name => "GMap地图瓦片";

        public bool CanDisposeSourceImage => true;

        public Image GetImage(int x, int y, int level, Size size)
        {
            var data = QueryTile(x, y, level, 0);
            if (data == null) return null;
            return Image.FromStream(new MemoryStream(data));
        }
        string QuerySql = "SELECT Tile FROM main.TilesData WHERE id = (SELECT id FROM main.Tiles WHERE X={0} AND Y={1} AND Zoom={2} AND Type={3})";
        string conStr = "Data Source=\"{0}\";Page Size=32768";
        byte[] QueryTile(int x, int y, int zoom, int type)
        {
            if (conStr == null) return null;
            type = (int)mMapType;
            if (type == 0) type = 1818940751;
            using (DbCommand com = con.CreateCommand())
            {
                com.CommandText = string.Format(QuerySql, x, y, zoom, type);
                using (DbDataReader rd = com.ExecuteReader(System.Data.CommandBehavior.SequentialAccess))
                {
                    if (rd.Read())
                    {
                        long length = rd.GetBytes(0, 0, null, 0, 0);
                        byte[] tile = new byte[length];
                        rd.GetBytes(0, 0, tile, 0, tile.Length);
                        return tile;
                    }
                }
            }
            return null;
        }
    }
    class HttpMapDataProvider : MapDataProviderBase
    {
        public HttpMapDataProvider()
        {
            TileSource = new HttpTileSource(this);
        }

        public override MapSize GetMapSizeInPixels(double zoomLevel)
        {
            double imageSize;
            imageSize = HttpTileSource.CalculateTotalImageSize(zoomLevel);
            return new MapSize(imageSize, imageSize);
        }

        protected override Size BaseSizeInPixels
        {
            get { return new Size(Convert.ToInt32(HttpTileSource.tileSize * 2), Convert.ToInt32(HttpTileSource.tileSize * 2)); }
        }
    }
    class HttpTileSource : MapTileSourceBase
    {
        public const int tileSize = 256;
        public const int maxZoomLevel = 14;

        public string HttpServerAddr { get; set; }

        public GoogleMapType MapType { get; set; } = GoogleMapType.Normal;

        internal static double CalculateTotalImageSize(double zoomLevel)
        {
            if (zoomLevel < 1.0)
                return zoomLevel * tileSize * 2;
            return Math.Pow(2.0, zoomLevel) * tileSize;
        }

        public HttpTileSource(ICacheOptionsProvider cacheOptionsProvider) :
            base((int)CalculateTotalImageSize(maxZoomLevel), (int)CalculateTotalImageSize(maxZoomLevel), tileSize, tileSize, cacheOptionsProvider)
        {
        }

        public override Uri GetTileByZoomLevel(int zoomLevel, int tilePositionX, int tilePositionY)
        {
            if (string.IsNullOrWhiteSpace(HttpServerAddr)) return null;
            try
            {
                if (zoomLevel <= maxZoomLevel)
                {
                    string imgUrl = $"{HttpServerAddr}/{(int)MapType}/{zoomLevel}/{tilePositionX}/{tilePositionY}";
                    //string imgUrl = string.Format("http://192.168.0.214:58089/{0}/{1}/{2}/{3}", (int)GoogleMapType.Normal, zoomLevel, tilePositionX, tilePositionY);
                    Uri u = new Uri(imgUrl);
                    return u;
                }
                return null;
            }
            catch
            {
                Console.WriteLine($"加载地图数据出错,无法连接到{HttpServerAddr}");
                return null;
            }
        }
    }
    #endregion

    //定位点聚合器
    class PosClusterer : IClusterer
    {
        private MapControl ctrl;
        private IMapDataAdapter owner;
        private MapViewport preViewPoint;
        private DebounceDispatcher dispatcher = new DebounceDispatcher();

        public bool IsBusy { get; private set; }

        public MapItemCollection Items { get; private set; }
        public PosClusterer(MapControl ctrl)
        {
            this.ctrl = ctrl;

        }
        public void SetOwner(IMapDataAdapter owner)
        {
            this.owner = owner;
            Items = new MapItemCollection(owner);
        }

        public void Clusterize(IEnumerable<MapItem> sourceItems, MapViewport viewport, bool sourceChanged)
        {
            IsBusy = true;
            if (sourceChanged)
                DoClusterize(sourceItems, viewport, sourceChanged);
            else
                dispatcher.Debounce(100, () => DoClusterize(sourceItems, viewport, sourceChanged));
        }

        private void DoClusterize(IEnumerable<MapItem> sourceItems, MapViewport viewport, bool sourceChanged)
        {
            if (preViewPoint == null)
            {
                preViewPoint = viewport;
                return;
            }
            if (!sourceChanged && preViewPoint.ZoomLevel == viewport.ZoomLevel)//地图移动或者MapControl大小发生了改变时直接操作Items避免闪烁
            {
                preViewPoint = viewport;
            }
            else//地图进行了缩放
            {
                Items.Clear();
                var cache = new Dictionary<int, List<MapItem>>();
                foreach (MapDot item in sourceItems)
                {
                    var point = ctrl.CoordPointToScreenPoint(item.Location);
                    int pointX = (int)point.X;
                    int pointY = (int)point.Y;
                    bool visible = true;
                    if (pointX <= _dotSize || pointX > ctrl.Width - _dotSize)
                        visible = false;
                    else if (pointY <= _dotSize || pointY > ctrl.Height - _dotSize)
                        visible = false;
                    pointX /= (_dotSize * 2);
                    pointY /= (_dotSize * 2);
                    var key = pointX << 16 | pointY;
                    if (!visible)
                        key = -key;
                    if (!cache.ContainsKey(key))
                        cache.Add(key, new List<MapItem>());
                    cache[key].Add(item);
                }
                var innerData = ctrl.Tag as InnerData;
                innerData._clusterCache.Clear();
                LinkedList<MapItem> temp = new LinkedList<MapItem>();
                foreach (var kv in cache)
                {
                    var firstDot = kv.Value[0] as MapDot;
                    var firstObj = firstDot.Tag as PosData;
                    firstDot.Size = kv.Value.Count > 1 ? _dotSize + 2 : _dotSize;
                    firstObj.ClusterCount = kv.Value.Count;
                    firstObj.ClusterKey = kv.Key;
                    innerData._clusterCache.Add(kv.Key, firstDot);
                    temp.AddLast(firstDot);
                }
                Items.AddRange(temp);

                cache.Clear();
                preViewPoint = viewport;
                owner.OnClustered();
            }
            this.IsBusy = false;
        }
        //计算多个坐标的中心位置  
        public GeoPoint GetCenterPointFromListOfCoordinates(List<MapItem> geoCoordinateList)
        {
            int total = geoCoordinateList.Count;
            double lat = 0, lon = 0;
            foreach (MapDot g in geoCoordinateList)
            {
                lat += (g.Location as GeoPoint).Latitude * Math.PI / 180;
                lon += (g.Location as GeoPoint).Longitude * Math.PI / 180;
            }
            lat /= total;
            lon /= total;
            return new GeoPoint(lat * 180 / Math.PI, lon * 180 / Math.PI);
        }

    }
}