开源地图 SharpMap

柔光的暖阳◎ 2022-07-15 17:44 246阅读 0赞

## **转自：http://www.cnblogs.com/hanwen/p/4067472.html** ##

## **Step1 创建一个地图控件** ##

1、启动Visual Studio 2012 并创建一个新的Windows应用程序

2、调整项目到.net Framework 4.0全框架

![Image 1][]

3、打开Form1的设计视图

### 4、在工具箱底部，常规右击点击“选择项”  ###

![Image 1][]

4、浏览SharpMap.UI.dll并添加

![Image 1][]

SharpMap的dll和地图文件网盘共享地址：http://pan.baidu.com/s/1hqzG0de （内含Demo）

5、点击确定如图：

![Image 1][]

6、拖动MapBox控件插入Form1窗体中

### 7、将mapBox1控件背景色设置为白色，Dock属性设置为Fill ###

![Image 1][]

## **Step2 添加一个图层到地图控件**    ##

1、添加SharpMap.dll到项目

![Image 1][]

2、添加地图文件到项目

![Image 1][]

3、修改窗体构造函数Fomr1()

![复制代码][copycode.gif]

public Form1()
            {
                InitializeComponent();
                VectorLayer vlay = new VectorLayer("States")
                {
                    DataSource = new ShapeFile(@"path_to_data\states_ugl.shp", true)
                };
                mapBox1.Map.Layers.Add(vlay);
                mapBox1.Map.ZoomToExtents();
                mapBox1.Refresh();
                mapBox1.ActiveTool = SharpMap.Forms.MapBox.Tools.Pan;//设置平移
            }

![复制代码][copycode.gif]

4、运行地图可以看到地图，并操作放大、缩小、平移

![Image 1][]

**Step3**** 给图层添加样式**

1、修改窗体构造函数Fomr2() 参见Dome

![复制代码][copycode.gif]

public Form2()
            {
                InitializeComponent();
    
                SharpMap.Layers.VectorLayer vlay = new SharpMap.Layers.VectorLayer("States");
                vlay.DataSource = new SharpMap.Data.Providers.ShapeFile(@"path_to_data\states_ugl.shp", true);
    
                //构造土地样式
                VectorStyle landStyle = new VectorStyle();
                landStyle.Fill = new SolidBrush(Color.FromArgb(232, 232, 232));
    
                //构造水样式
                VectorStyle waterStyle = new VectorStyle();
                waterStyle.Fill = new SolidBrush(Color.FromArgb(198, 198, 255));
    
                //创建地图
                Dictionary<string, SharpMap.Styles.IStyle> styles = new Dictionary<string, IStyle>();
                styles.Add("land", landStyle);
                styles.Add("water", waterStyle);
    
                //分配主题
                vlay.Theme = new SharpMap.Rendering.Thematics.UniqueValuesTheme<string>("class", styles, landStyle);
    
                mapBox1.Map.Layers.Add(vlay);
                mapBox1.Map.ZoomToExtents();
                mapBox1.Refresh();
                mapBox1.ActiveTool = SharpMap.Forms.MapBox.Tools.Pan;
            }

![复制代码][copycode.gif]

2、运行程序，如图

![Image 1][]

##   **Step4 添加WMS-层到地图** ##

1、修改From3构造函数()

调用http://sampleserver1.arcgisonline.com/ArcGIS/services/Specialty/ESRI\_StatesCitiesRivers\_USA/MapServer/WMSServer 服务器记载数据。

![复制代码][copycode.gif]

public Form3()
            {
                InitializeComponent();
    
                SharpMap.Layers.VectorLayer vlay = new SharpMap.Layers.VectorLayer("States");
                vlay.DataSource = new SharpMap.Data.Providers.ShapeFile(@"path_to_data\states_ugl.shp", true);
    
                //构造土地样式
                VectorStyle landStyle = new VectorStyle();
                landStyle.Fill = new SolidBrush(Color.FromArgb(232, 232, 232));
    
                //构造水样式
                VectorStyle waterStyle = new VectorStyle();
                waterStyle.Fill = new SolidBrush(Color.FromArgb(198, 198, 255));
    
                //创建地图
                Dictionary<string, SharpMap.Styles.IStyle> styles = new Dictionary<string, IStyle>();
                styles.Add("land", landStyle);
                styles.Add("water", waterStyle);
    
                //分配主题
                vlay.Theme = new SharpMap.Rendering.Thematics.UniqueValuesTheme<string>("class", styles, landStyle);
    
                mapBox1.Map.Layers.Add(vlay);
                mapBox1.Map.ZoomToExtents();
                mapBox1.Refresh();
                mapBox1.ActiveTool = SharpMap.Forms.MapBox.Tools.Pan;
    
                SharpMap.Layers.WmsLayer wmsL =new SharpMap.Layers.WmsLayer("US Cities","http://sampleserver1.arcgisonline.com/ArcGIS/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/WMSServer");
                //转换为PNG
                wmsL.SetImageFormat("image/png");
                //11.0版本
                wmsL.Version = "1.1.0";
                //添加城市图层 服务名称2
                wmsL.AddLayer("2");
                //设置 SRID
                wmsL.SRID = 4326;
                mapBox1.Map.Layers.Add(wmsL);
            }

![复制代码][copycode.gif]

2、运行程序如图，显示城镇。

![Image 1][]

##  **Step5 添加一个平铺层作为背景** ##

在这个步骤中，可以结合网上瓦片服务器数据连同本地数据显示。

1、添加BruTile.dll、ProjNet.dll、GeoAPI.dll 到项目中

2、添加辅助方法来创建google坐标系

![复制代码][copycode.gif]

private  GeoAPI.CoordinateSystems.IProjectedCoordinateSystem GetEPSG900913(ProjNet.CoordinateSystems.CoordinateSystemFactory csFact)
            {
                List<GeoAPI.CoordinateSystems.ProjectionParameter> parameters = new List<GeoAPI.CoordinateSystems.ProjectionParameter>();
                parameters.Add(new GeoAPI.CoordinateSystems.ProjectionParameter("semi_major", 6378137.0));
                parameters.Add(new GeoAPI.CoordinateSystems.ProjectionParameter("semi_minor", 6378137.0));
                parameters.Add(new GeoAPI.CoordinateSystems.ProjectionParameter("latitude_of_origin", 0.0));
                parameters.Add(new GeoAPI.CoordinateSystems.ProjectionParameter("central_meridian", 0.0));
                parameters.Add(new GeoAPI.CoordinateSystems.ProjectionParameter("scale_factor", 1.0));
                parameters.Add(new GeoAPI.CoordinateSystems.ProjectionParameter("false_easting", 0.0));
                parameters.Add(new GeoAPI.CoordinateSystems.ProjectionParameter("false_northing", 0.0));
                GeoAPI.CoordinateSystems.IProjection projection = csFact.CreateProjection("Google Mercator", "mercator_1sp", parameters);
                GeoAPI.CoordinateSystems.IGeographicCoordinateSystem wgs84 = csFact.CreateGeographicCoordinateSystem(
                    "WGS 84", ProjNet.CoordinateSystems.AngularUnit.Degrees, ProjNet.CoordinateSystems.HorizontalDatum.WGS84, ProjNet.CoordinateSystems.PrimeMeridian.Greenwich,
                    new GeoAPI.CoordinateSystems.AxisInfo("north", GeoAPI.CoordinateSystems.AxisOrientationEnum.North), new GeoAPI.CoordinateSystems.AxisInfo("east", GeoAPI.CoordinateSystems.AxisOrientationEnum.East)
                );
    
                GeoAPI.CoordinateSystems.IProjectedCoordinateSystem epsg900913 = csFact.CreateProjectedCoordinateSystem("Google Mercator", wgs84, projection, ProjNet.CoordinateSystems.LinearUnit.Metre,
                  new GeoAPI.CoordinateSystems.AxisInfo("East", GeoAPI.CoordinateSystems.AxisOrientationEnum.East), new GeoAPI.CoordinateSystems.AxisInfo("North", GeoAPI.CoordinateSystems.AxisOrientationEnum.North));
                return epsg900913;
            }

![复制代码][copycode.gif]

3、修改构造函数Form4()

![复制代码][copycode.gif]

public Form4()
            {
                InitializeComponent();
    
                SharpMap.Layers.VectorLayer vlay = new SharpMap.Layers.VectorLayer("States");
                vlay.DataSource = new SharpMap.Data.Providers.ShapeFile(@"path_to_data\states_ugl.shp", true);
    
                //构造土地样式
                VectorStyle landStyle = new VectorStyle();
                landStyle.Fill = new SolidBrush(Color.FromArgb(232, 232, 232));
    
                //创造水样式
                VectorStyle waterStyle = new VectorStyle();
                waterStyle.Fill = new SolidBrush(Color.FromArgb(198, 198, 255));
    
                //创造地图
                Dictionary<string, SharpMap.Styles.IStyle> styles = new Dictionary<string, IStyle>();
                styles.Add("land", landStyle);
                styles.Add("water", waterStyle);
    
                //分配主题
                vlay.Theme = new SharpMap.Rendering.Thematics.UniqueValuesTheme<string>("class", styles, landStyle);
    
                mapBox1.Map.Layers.Add(vlay);
    
                ProjNet.CoordinateSystems.Transformations.CoordinateTransformationFactory ctFact = new ProjNet.CoordinateSystems.Transformations.CoordinateTransformationFactory();
                ProjNet.CoordinateSystems.CoordinateSystemFactory csFact = new ProjNet.CoordinateSystems.CoordinateSystemFactory();
                vlay.CoordinateTransformation = ctFact.CreateFromCoordinateSystems(ProjNet.CoordinateSystems.GeographicCoordinateSystem.WGS84, GetEPSG900913(csFact));
                vlay.ReverseCoordinateTransformation = ctFact.CreateFromCoordinateSystems(GetEPSG900913(csFact), ProjNet.CoordinateSystems.GeographicCoordinateSystem.WGS84);
    
    
                mapBox1.Map.BackgroundLayer.Add(new SharpMap.Layers.TileAsyncLayer(
                    new BruTile.Web.OsmTileSource(), "OSM"));
    
                mapBox1.Map.ZoomToExtents();
                mapBox1.Refresh();
                mapBox1.ActiveTool = SharpMap.Forms.MapBox.Tools.Pan;
    
            }

![复制代码][copycode.gif]

4、运行程序，如图：

![Image 1][]

[Image 1]: 
[copycode.gif]: /images/20220715/0773c34250384151940e1ad8d39a81f2.png