WPF使用 Gmap.NET 绘制极坐标运动轨迹

  大家好,已经很久没有更新了,今天写一篇关于WPF 使用 Gmap.NET 相关的,网上很多Winform的很**,所以我给Wpf进行一些补充。虽然它已经很久没有更新了,但是也只能用这个了。没别的好选择的,毕竟它也没啥可更新的,也可以理解。

  使用它之前请Nuget安装一下GMap.NET.Core、GMap.NET.WindowsPresentation 的库。ok 我们直接开始。

  我们在MainWindows中写上一个WrapPanel 用于存放Gmap的容器。

  <WrapPanel Grid.Row="1" Grid.Column="1" Grid.RowSpan="2" x:Name="mapPanel">

  随后我们在MainWindows构造函数中进行配置,然后给mapPanel中添加了radarMap控件。还有鼠标右击的

public MainWindow()
        {
            m_viewModel = new ViewModelMain();
            InitializeComponent();
            radarMap = new GMap.NET.WindowsPresentation.GMapControl();
            InitMapControl(radarMap);
            this.mapPanel.Children.Add(radarMap);
            radarMap.MouseRightButtonUp += RadarMap_MouseRightButtonUp;
            this.videoWindows.Child = pictureBox;
            DrawWarningArea();
        }

  随后在初始化容器中配置一些地图的设置,这里面有一个静态文件,里面也没啥。自己也可以写,我就不把Config写出来了。

 private void InitMapControl(GMap.NET.WindowsPresentation.GMapControl radarMap)
        {
            //radarMap.Name = "radarMap";
            radarMap.Manager.Mode = AccessMode.ServerAndCache;
            radarMap.Position = Config.CenterPoint;
            radarMap.ShowCenter = false;
            radarMap.DragButton = System.Windows.Input.MouseButton.Left;
            radarMap.MinZoom = Config.MINZOOM;
            radarMap.MaxZoom = Config.MAXZOOM;
            radarMap.Zoom = Config.INITZOOM;
            radarMap.OnMapZoomChanged += radarMap_OnMapZoomChanged;
        }

  这个是鼠标右击添加Marker的,这个就比较恶心了,由于Wpf中没有overlays的概念,所以你就直接添加marker就行。具体看代码,这个里面有个自定义控件。

List<PointLatLng> pointLatlngs = new List<PointLatLng>();
        private void RadarMap_MouseRightButtonUp(object sender, MouseButtonEventArgs e)
        {
            Point clickPoint = e.GetPosition(radarMap);
            PointLatLng point = radarMap.FromLocalToLatLng((int)clickPoint.X, (int)clickPoint.Y);
            pointLatlngs.Add(point);
            GMapMarker currentMarker = new GMapMarker(point);
            {
                currentMarker.Shape = new CustomMarker(1,currentMarker, "custom position marker");
                currentMarker.Offset = new System.Windows.Point(-15, -15);
                currentMarker.ZIndex = int.MaxValue;
                radarMap.Markers.Add(currentMarker);
            }
        }

  具体是写了个控件,要不Wpf没办法渲染上。

<UserControl x:Class="DisplayControlTerminal.Map.CustomMarker"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"   
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:DisplayControlTerminal.Map"
             mc:Ignorable="d" 
             d:DesignHeight="5.75" d:DesignWidth="6">
    <Image Name="icon" Source="/Resources/bigMarkerGreen.png" VerticalAlignment="Center" HorizontalAlignment="Center" Height="4" Margin="1,0,3,3" Width="2"/>
</UserControl>

还有那个Circle是在DrawWarningArea里画出来的,调用了里面带参的构造函数,然后里面就不用管了。

private void DrawWarningArea()
        {
            for (int i = 0; i < Config.SCOPE_DIS; i++)
            {
                GMapMarker it = new GMapMarker(Config.CenterPoint);
                it.ZIndex = -1;
                Circle c = new Circle((i + 1).ToString() + "km", (i + 1) * 1000);
                c.Tag = it;
                c.IsHitTestVisible = false;
                c.UpdateCircle(radarMap);
                it.Shape = c;
                radarMap.Markers.Add(it);
                Circles.Add(it);
            }
            GMapMarker crossCenter = new GMapMarker(Config.CenterPoint);
            Cross cross = new Cross();
            cross.Tag = crossCenter;
            cross.SetOffset();
            crossCenter.Shape = cross;
            //crossCenter.ZIndex = 55;
            radarMap.Markers.Add(crossCenter);
            //m.Shape = new CustomMarker(this, m, "ceshi");
            //m.ZIndex = 55;
            //radarMap.Markers.Add(m);
        }

  最重要的是如何画轨迹,我第一时间就想到了Pen类,然后根据pointlatlng这个集合我们想办法去搞事情,果不其然,我们只需要让你的硬件设备给你的那 pointLatlngs 集合中添加就行,但如何将经纬度转换成本地坐标 就比较复杂了。

List<PointLatLng> pointLatlngs = new List<PointLatLng>();
private void Button_Click(object sender, RoutedEventArgs e)
        {
            for (int i = 0; i < pointLatlngs.Count; i++)
            {
                GMapRoute gmRoute = new GMapRoute(new List<PointLatLng>() {
                    pointLatlngs[i] , pointLatlngs.Count-1 == i ? pointLatlngs[i] : pointLatlngs[i + 1]})
                {
                    Shape = new Line()
                    {
                        StrokeThickness = 4,
                        Stroke = System.Windows.Media.Brushes.BlueViolet
                    }
                };
                radarMap.Markers.Add(gmRoute);
            }
        }

最后效果图

 

posted @ 2020-04-09 12:10  ZaraNet  阅读(1152)  评论(10编辑  收藏  举报