开源地图 SharpMap
2014-11-01 17:27 张瀚文zhw 阅读(7551) 评论(3) 编辑 收藏 举报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
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”
4、浏览SharpMap.UI.dll并添加
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：
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
Step2 添加一个图层到地图控件
1、添加SharpMap.dll到项目
2、添加地图文件到项目
3、修改窗体构造函数Fomr1()
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
}
4、运行地图可以看到地图，并操作放大、缩小、平移
Step3 给图层添加样式
1、修改窗体构造函数Fomr2() 参见Dome
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;
}
2、运行程序，如图
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。
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);
}
2、运行程序如图，显示城镇。
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
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;
}
3、修改构造函数Form4()
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;
}
4、运行程序，如图：
