551 lines
22 KiB
C#
551 lines
22 KiB
C#
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using Aspose.Gis;
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using Aspose.Gis.Rendering;
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using Aspose.Gis.Rendering.Symbolizers;
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using Aspose.Gis.SpatialReferencing;
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using Aspose.GIS.Examples.CSharp;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Drawing.Text;
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using System.IO;
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using System.Linq;
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namespace Aspose.GIS_for.NET.Rendering
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{
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public class RenderMap
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{
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private static string dataDir = RunExamples.GetDataDir();
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public static void Run()
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{
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// Note: a license is required to run this example.
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// You can request a 30-day temporary license here: https://purchase.aspose.com/temporary-license
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var pathToLicenseFile = @""; // <- change this to the path to your license file
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if (!string.IsNullOrEmpty(pathToLicenseFile))
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{
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var license = new License();
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license.SetLicense(pathToLicenseFile);
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}
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RenderWithDefaultSettings();
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RenderToSpecificProjection();
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AddMapLayersAndStyles();
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DefaultMarkerStyle();
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ChangeMarkerStyle();
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ChangeMarkerStyleTriangles();
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ChangeMarkerStyleFeatureBased();
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RasterImageMarkerSymbolizer();
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DefaultLineStyle();
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ChangeLineStyle();
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ChangeLineStyleComplex();
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MarkerLineSymbolizer();
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DefaultFillStyle();
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ChangeFillStyle();
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MarkerFillSymbolizer();
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MixedGeometryRendering();
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DrawLayeredSymbolizersByFeatures();
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DrawLayeredSymbolizersByLayers();
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RuleBasedRendering();
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GeometryGenerator();
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ClusterMarkerSymbolizer();
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ClusterTextSymbolizer();
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}
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public static void RenderWithDefaultSettings()
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{
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//ExStart: RenderWithDefaultSettings
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using (var map = new Map(800, 400))
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{
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map.Add(VectorLayer.Open(dataDir + "land.shp", Drivers.Shapefile));
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map.Render(dataDir + "land_out.svg", Renderers.Svg);
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}
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//ExEnd: RenderWithDefaultSettings
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}
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public static void RenderToSpecificProjection()
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{
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//ExStart: RenderToSpecificProjection
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using (var map = new Map(800, 400))
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{
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map.Add(VectorLayer.Open(dataDir + "land.shp", Drivers.Shapefile));
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map.SpatialReferenceSystem = SpatialReferenceSystem.CreateFromEpsg(54024); // World Bonne
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map.Render(dataDir + "land_out.svg", Renderers.Svg);
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}
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//ExEnd: RenderToSpecificProjection
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}
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public static void AddMapLayersAndStyles()
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{
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//ExStart: AddMapLayersAndStyles
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using (var map = new Map(800, 476))
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{
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var baseMapSymbolizer = new SimpleFill { FillColor = Color.Salmon, StrokeWidth = 0.75 };
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map.Add(VectorLayer.Open(dataDir + "basemap.shp", Drivers.Shapefile), baseMapSymbolizer);
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var citiesSymbolizer = new SimpleMarker() { FillColor = Color.LightBlue };
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citiesSymbolizer.FeatureBasedConfiguration = (feature, symbolizer) =>
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{
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var population = feature.GetValue<int>("population");
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symbolizer.Size = 10 * population / 1000;
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if (population < 2500)
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{
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symbolizer.FillColor = Color.GreenYellow;
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}
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};
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map.Add(VectorLayer.Open(dataDir + "points.geojson", Drivers.GeoJson), citiesSymbolizer);
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map.Render(dataDir + "cities_out.svg", Renderers.Svg);
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}
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//ExEnd: AddMapLayersAndStyles
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}
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#region Marker
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public static void DefaultMarkerStyle()
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{
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//ExStart: DefaultMarkerStyle
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using (var map = new Map(500, 200))
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{
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var symbol = new SimpleMarker();
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map.Add(VectorLayer.Open(dataDir + "points.geojson", Drivers.GeoJson), symbol);
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map.Padding = 20;
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map.Render(dataDir + "points_out.svg", Renderers.Svg);
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}
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//ExEnd: DefaultMarkerStyle
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}
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public static void ChangeMarkerStyle()
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{
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//ExStart: ChangeMarkerStyle
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using (var map = new Map(500, 200))
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{
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var symbol = new SimpleMarker() { Size = 7, StrokeWidth = 1, FillColor = Color.Red };
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map.Add(VectorLayer.Open(dataDir + "points.geojson", Drivers.GeoJson), symbol);
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map.Padding = 20;
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map.Render(dataDir + "points_out.svg", Renderers.Svg);
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}
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//ExEnd: ChangeMarkerStyle
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}
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public static void ChangeMarkerStyleTriangles()
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{
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//ExStart: ChangeMarkerStyleTriangles
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using (var map = new Map(500, 200))
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{
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var symbol = new SimpleMarker()
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{
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Size = 15,
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FillColor = Color.DarkMagenta,
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StrokeStyle = StrokeStyle.None,
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ShapeType = MarkerShapeType.Triangle,
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Rotation = 90
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};
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map.Add(VectorLayer.Open(dataDir + "points.geojson", Drivers.GeoJson), symbol);
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map.Padding = 20;
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map.Render(dataDir + "points_out.svg", Renderers.Svg);
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}
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//ExEnd: ChangeMarkerStyleTriangles
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}
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public static void ChangeMarkerStyleFeatureBased()
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{
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//ExStart: ChangeMarkerStyleFeatureBased
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using (var map = new Map(500, 200))
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{
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var symbol = new SimpleMarker() { FillColor = Color.LightBlue };
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symbol.FeatureBasedConfiguration = (feature, symbolizer) =>
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{
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// retirieve city population (in thousands) from a feature attribute
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var population = feature.GetValue<int>("population");
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// let's increase circle radius by 5 pixels for each million people
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symbolizer.Size = 5 * population / 1000;
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// and let's draw cities with less than 2.5M people in green
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if (population < 2500)
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{
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symbolizer.FillColor = Color.GreenYellow;
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}
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};
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map.Add(VectorLayer.Open(dataDir + "points.geojson", Drivers.GeoJson), symbol);
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map.Padding = 20;
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map.Render(dataDir + "points_out.svg", Renderers.Svg);
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}
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//ExEnd: ChangeMarkerStyleFeatureBased
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}
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public static void RasterImageMarkerSymbolizer()
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{
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//ExStart: RasterImageMarkerSymbolizer
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using (var map = new Map(500, 200))
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{
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var symbol = new RasterImageMarker(imagePath: dataDir + "cross.png")
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{
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Width = 30,
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Height = 30,
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Rotation = 45,
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};
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map.Add(VectorLayer.Open(dataDir + "points.geojson", Drivers.GeoJson), symbol);
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map.Padding = 20;
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map.Render(dataDir + "raster_marker_out.svg", Renderers.Svg);
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}
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//ExEnd: RasterImageMarkerSymbolizer
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}
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public static void ClusterMarkerSymbolizer()
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{
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//ExStart: ClusterMarkerSymbolizer
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using (var map = new Map(500, 300))
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{
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// take only part of the word
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map.Extent = new Extent(-100, -60, 100, 60){SpatialReferenceSystem = SpatialReferenceSystem.Wgs84};
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// use difference colors for nested cluster points.
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Color[] colors = new Color[] { Color.Green, Color.Aquamarine, Color.Gold, Color.Fuchsia, Color.Red, Color.Blue, Color.Brown, Color.Thistle, Color.Cyan, };
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var count = 0;
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// create a cluster symbolizer and setup a cluster size
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var symbolizer = new MarkerCluster(Measurement.Pixels(15))
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{
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// use own a style for each a cluster
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FeaturesBasedConfiguration = (features, cluster) =>
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{
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// use more size for more points
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var itemsInCluster = features.Count();
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cluster.Marker = new SimpleMarker() {FillColor = Color.Red, Size = 3 + itemsInCluster % 10};
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// allow draw inner cluster points (by default is none)
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cluster.NestedMarker = new SimpleMarker() {FillColor = colors[count % colors.Length], Size = 3, StrokeStyle = StrokeStyle.None };
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count++;
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},
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};
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map.Add(VectorLayer.Open(dataDir + "land.shp", Drivers.Shapefile));
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map.Add(VectorLayer.Open(dataDir + "places.shp", Drivers.Shapefile), symbolizer);
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map.Padding = 20;
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map.Render(dataDir + "out_cluster_countries.svg", Renderers.Svg);
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}
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//ExEnd: ClusterMarkerSymbolizer
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}
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public static void ClusterTextSymbolizer()
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{
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//ExStart: ClusterTextSymbolizer
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using (var map = new Map(500, 300))
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{
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// take only part of the word
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map.Extent = new Extent(-100, -60, 100, 60) { SpatialReferenceSystem = SpatialReferenceSystem.Wgs84 };
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// create a cluster symbolizer and setup a cluster size
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var clusterSymbolizer = new MarkerCluster(Measurement.Pixels(25))
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{
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// Use own a style for each a cluster
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FeaturesBasedConfiguration = (features, cluster) =>
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{
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var itemsInCluster = features.Count();
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// First, we create an image with a drawn number for the cluster. This code not optimized of memory using.
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// It is better to load prepare pictures from your file system.
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var digitText = itemsInCluster.ToString();
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Stream memoryStream;
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using (Bitmap digitBitmap = new Bitmap(40, 40))
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{
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using (Graphics graphics = Graphics.FromImage(digitBitmap))
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{
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// increase text quality
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graphics.SmoothingMode = SmoothingMode.AntiAlias;
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graphics.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
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if (digitText.Length == 1)
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{
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graphics.DrawString(digitText, new Font("Arial", 30, GraphicsUnit.Pixel),
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new SolidBrush(Color.Black), 5, 3);
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}
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else
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{
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graphics.DrawString(digitText, new Font("Arial", 30, GraphicsUnit.Pixel),
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new SolidBrush(Color.Black), -4, 3);
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}
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graphics.Flush();
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}
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// store the bitmap to a stream
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memoryStream = new MemoryStream();
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digitBitmap.Save(memoryStream, System.Drawing.Imaging.ImageFormat.Png);
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}
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var pathToDigit = AbstractPath.FromStream(memoryStream);
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// Secondly, we use RasterImageMarker which renders our image (bitmap).
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var symbolizer = new RasterImageMarker(pathToDigit)
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{
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Width = Measurement.Pixels(12),
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Height = Measurement.Pixels(12),
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VerticalAnchorPoint = VerticalAnchor.Center,
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HorizontalAnchorPoint = HorizontalAnchor.Center
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};
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// As result, we create a complex symbolizer to join a background circle and the drawn digit.
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var complexMarker = new LayeredSymbolizer();
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complexMarker.Add(new SimpleMarker() {Size = Measurement.Pixels(16), FillColor = Color.Azure});
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complexMarker.Add(symbolizer);
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cluster.Marker = complexMarker;
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},
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};
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// add layers with symbolizers
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map.Padding = 20;
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map.Add(VectorLayer.Open(dataDir + "land.shp", Drivers.Shapefile), new SimpleLine(){Width = 0.5 });
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map.Add(VectorLayer.Open(dataDir + "places.shp", Drivers.Shapefile), clusterSymbolizer);
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// complete our map creation
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map.Render(dataDir + "out_cluster_texts.svg", Renderers.Svg);
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}
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//ExEnd: ClusterTextSymbolizer
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}
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#endregion
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#region Line
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public static void DefaultLineStyle()
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{
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//ExStart: DefaultLineStyle
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using (var map = new Map(500, 317))
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{
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var symbolizer = new SimpleLine();
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map.Add(VectorLayer.Open(dataDir + "lines.geojson", Drivers.GeoJson), symbolizer);
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map.Render(dataDir + "lines_out.svg", Renderers.Svg);
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}
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//ExEnd: DefaultLineStyle
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}
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public static void ChangeLineStyle()
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{
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//ExStart: ChangeLineStyle
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using (var map = new Map(500, 317))
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{
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var symbolizer = new SimpleLine { Width = 1.5, Color = Color.FromArgb(0xAE, 0xD9, 0xFD) };
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map.Add(VectorLayer.Open(dataDir + "lines.geojson", Drivers.GeoJson), symbolizer);
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map.Render(dataDir + "lines_out.svg", Renderers.Svg);
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}
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//ExEnd: ChangeLineStyle
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}
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public static void ChangeLineStyleComplex()
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{
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//ExStart: ChangeLineStyleComplex
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using (var map = new Map(500, 317))
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{
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var lineSymbolizer = new SimpleLine { Width = 1.5, Color = Color.FromArgb(0xae, 0xd9, 0xfd) };
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lineSymbolizer.FeatureBasedConfiguration = (feature, symbolizer) =>
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{
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if (feature.GetValue<string>("NAM") == "UNK")
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{
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symbolizer.Width = 1;
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symbolizer.Style = StrokeStyle.Dash;
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}
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};
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map.Add(VectorLayer.Open(dataDir + "lines.geojson", Drivers.GeoJson), lineSymbolizer);
|
|||
|
|
map.Render(dataDir + "lines_out.svg", Renderers.Svg);
|
|||
|
|
}
|
|||
|
|
//ExEnd: ChangeLineStyleComplex
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public static void MarkerLineSymbolizer()
|
|||
|
|
{
|
|||
|
|
//ExStart: MarkerLineSymbolizer
|
|||
|
|
using (var map = new Map(500, 317))
|
|||
|
|
{
|
|||
|
|
var symbolizer = new MarkerLine
|
|||
|
|
{
|
|||
|
|
Marker = new SimpleMarker
|
|||
|
|
{
|
|||
|
|
ShapeType = MarkerShapeType.Circle,
|
|||
|
|
FillColor = Color.Coral,
|
|||
|
|
Size = 4
|
|||
|
|
},
|
|||
|
|
Interval = 10
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
map.Add(VectorLayer.Open(dataDir + "lines.geojson", Drivers.GeoJson), symbolizer);
|
|||
|
|
map.Render(dataDir + "marker_line_out.png", Renderers.Png);
|
|||
|
|
}
|
|||
|
|
//ExEnd: MarkerLineSymbolizer
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
#region Polygons
|
|||
|
|
|
|||
|
|
public static void DefaultFillStyle()
|
|||
|
|
{
|
|||
|
|
//ExStart: DefaultFillStyle
|
|||
|
|
using (var map = new Map(500, 450))
|
|||
|
|
{
|
|||
|
|
var symbolizer = new SimpleFill();
|
|||
|
|
|
|||
|
|
map.Add(VectorLayer.Open(dataDir + "polygons.geojson", Drivers.GeoJson), symbolizer);
|
|||
|
|
map.Render(dataDir + "polygons_out.svg", Renderers.Svg);
|
|||
|
|
}
|
|||
|
|
//ExEnd: DefaultFillStyle
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public static void ChangeFillStyle()
|
|||
|
|
{
|
|||
|
|
//ExStart: ChangeFillStyle
|
|||
|
|
using (var map = new Map(500, 450))
|
|||
|
|
{
|
|||
|
|
var symbolizer = new SimpleFill { FillColor = Color.Azure, StrokeColor = Color.Brown };
|
|||
|
|
|
|||
|
|
map.Add(VectorLayer.Open(dataDir + "polygons.geojson", Drivers.GeoJson), symbolizer);
|
|||
|
|
map.Render(dataDir + "polygons_out.svg", Renderers.Svg);
|
|||
|
|
}
|
|||
|
|
//ExEnd: ChangeFillStyle
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public static void MarkerFillSymbolizer()
|
|||
|
|
{
|
|||
|
|
//ExStart: MarkerFillSymbolizer
|
|||
|
|
using (var map = new Map(500, 450))
|
|||
|
|
{
|
|||
|
|
var symbolizer = new MarkerPatternFill
|
|||
|
|
{
|
|||
|
|
Marker = new SimpleMarker
|
|||
|
|
{
|
|||
|
|
ShapeType = MarkerShapeType.Triangle,
|
|||
|
|
FillColor = Color.Red,
|
|||
|
|
Size = 5
|
|||
|
|
},
|
|||
|
|
HorizontalInterval = 10,
|
|||
|
|
VerticalInterval = 10
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
map.Add(VectorLayer.Open(dataDir + "polygons.geojson", Drivers.GeoJson), symbolizer);
|
|||
|
|
map.Render(dataDir + "polygons_marker_fill_out.png", Renderers.Png);
|
|||
|
|
}
|
|||
|
|
//ExEnd: MarkerFillSymbolizer
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
#region Mixed Geometry Symbolizer
|
|||
|
|
|
|||
|
|
public static void MixedGeometryRendering()
|
|||
|
|
{
|
|||
|
|
//ExStart: MixedGeometryRendering
|
|||
|
|
using (var map = new Map(500, 210))
|
|||
|
|
{
|
|||
|
|
var symbolizer = new MixedGeometrySymbolizer();
|
|||
|
|
symbolizer.PointSymbolizer = new SimpleMarker { FillColor = Color.Red, Size = 10 };
|
|||
|
|
symbolizer.LineSymbolizer = new SimpleLine { Color = Color.Blue };
|
|||
|
|
symbolizer.PolygonSymbolizer = new SimpleFill { FillColor = Color.Green };
|
|||
|
|
|
|||
|
|
map.Add(VectorLayer.Open(dataDir + "mixed.geojson", Drivers.GeoJson), symbolizer);
|
|||
|
|
map.Render(dataDir + "mixed_out.svg", Renderers.Svg);
|
|||
|
|
}
|
|||
|
|
//ExEnd: MixedGeometryRendering
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
#region Layered Symbolizer
|
|||
|
|
|
|||
|
|
public static void DrawLayeredSymbolizersByFeatures()
|
|||
|
|
{
|
|||
|
|
//ExStart: DrawLayeredSymbolizersByFeatures
|
|||
|
|
using (var map = new Map(200, 200))
|
|||
|
|
{
|
|||
|
|
var symbolizer = new LayeredSymbolizer(RenderingOrder.ByFeatures);
|
|||
|
|
symbolizer.Add(new SimpleLine { Width = 10, Color = Color.Black });
|
|||
|
|
symbolizer.Add(new SimpleLine { Width = 8, Color = Color.White });
|
|||
|
|
|
|||
|
|
map.Add(VectorLayer.Open(dataDir + "intersection.geojson", Drivers.GeoJson), symbolizer);
|
|||
|
|
map.Render(dataDir + "intersection_out.svg", Renderers.Svg);
|
|||
|
|
}
|
|||
|
|
//ExEnd: DrawLayeredSymbolizersByFeatures
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public static void DrawLayeredSymbolizersByLayers()
|
|||
|
|
{
|
|||
|
|
//ExStart: DrawLayeredSymbolizersByLayers
|
|||
|
|
using (var map = new Map(200, 200))
|
|||
|
|
{
|
|||
|
|
var symbolizer = new LayeredSymbolizer(RenderingOrder.ByLayers);
|
|||
|
|
symbolizer.Add(new SimpleLine { Width = 10, Color = Color.Black });
|
|||
|
|
symbolizer.Add(new SimpleLine { Width = 8, Color = Color.White });
|
|||
|
|
|
|||
|
|
map.Add(VectorLayer.Open(dataDir + "intersection.geojson", Drivers.GeoJson), symbolizer);
|
|||
|
|
map.Render(dataDir + "intersection_out.svg", Renderers.Svg);
|
|||
|
|
}
|
|||
|
|
//ExEnd: DrawLayeredSymbolizersByLayers
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
#region Rule-based Symbolizer
|
|||
|
|
|
|||
|
|
public static void RuleBasedRendering()
|
|||
|
|
{
|
|||
|
|
//ExStart: RuleBasedRendering
|
|||
|
|
using (var map = new Map(600, 400))
|
|||
|
|
{
|
|||
|
|
var symbolizer = new RuleBasedSymbolizer();
|
|||
|
|
symbolizer.Add(f => f.GetValue<string>("sov_a3") == "CAN", new SimpleLine { Color = Color.FromArgb(213, 43, 30) });
|
|||
|
|
symbolizer.Add(f => f.GetValue<string>("sov_a3") == "USA", new SimpleLine { Color = Color.FromArgb(15, 71, 175) });
|
|||
|
|
symbolizer.Add(f => f.GetValue<string>("sov_a3") == "MEX", new SimpleLine { Color = Color.FromArgb(0, 104, 71) });
|
|||
|
|
symbolizer.Add(f => f.GetValue<string>("sov_a3") == "CUB", new SimpleLine { Color = Color.FromArgb(255, 215, 0) });
|
|||
|
|
|
|||
|
|
map.Add(VectorLayer.Open(dataDir + "railroads.shp", Drivers.Shapefile), symbolizer);
|
|||
|
|
map.Render(dataDir + "railroads_out.svg", Renderers.Svg);
|
|||
|
|
}
|
|||
|
|
//ExEnd: RuleBasedRendering
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
#region Geometry Generator
|
|||
|
|
public static void GeometryGenerator()
|
|||
|
|
{
|
|||
|
|
//ExStart: GeometryGenerator
|
|||
|
|
using (var map = new Map(500, 200))
|
|||
|
|
{
|
|||
|
|
var symbol = new GeometryGenerator
|
|||
|
|
{
|
|||
|
|
Expression = f =>
|
|||
|
|
{
|
|||
|
|
return f.Geometry.GetBuffer(30_000);
|
|||
|
|
},
|
|||
|
|
|
|||
|
|
Symbolizer = new SimpleFill
|
|||
|
|
{
|
|||
|
|
FillColor = Color.LightBlue,
|
|||
|
|
StrokeColor = Color.Blue,
|
|||
|
|
},
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
map.Add(VectorLayer.Open(dataDir + "points.geojson", Drivers.GeoJson), symbol);
|
|||
|
|
map.Padding = 20;
|
|||
|
|
map.SpatialReferenceSystem = SpatialReferenceSystem.WebMercator;
|
|||
|
|
map.Render(dataDir + "geometry_generator_out.svg", Renderers.Svg);
|
|||
|
|
}
|
|||
|
|
//ExEnd: GeometryGenerator
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endregion
|
|||
|
|
}
|
|||
|
|
}
|