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ThinkGeo Cloud
ThinkGeo UI Controls
ThinkGeo Open Source
Help and Support
External Resources
using System; using System.Collections.Generic; using System.Linq; using System.Windows.Forms; namespace RemoveLineFromMultiLine { static class Program { /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new TestForm()); } } }
using System; using System.Collections.Generic; using System.Drawing; using System.Windows.Forms; using ThinkGeo.MapSuite.Core; namespace RemoveLineFromMultiLine { public partial class TestForm : Form { private MapEngine mapEngine = new MapEngine(); private Bitmap bitmap = null; public TestForm() { InitializeComponent(); } private void TestForm_Load(object sender, EventArgs e) { // Set the extent and the background color mapEngine.CurrentExtent = ExtentHelper.GetDrawingExtent(new RectangleShape(-95.3123,38.9718,-95.2837,38.9549), Map.Width, Map.Height); mapEngine.BackgroundFillBrush = new GeoSolidBrush(GeoColor.GeographicColors.ShallowOcean); //Displays the World Map Kit as a background. ThinkGeo.MapSuite.Core.WorldMapKitLayer worldMapKitLayer = new ThinkGeo.MapSuite.Core.WorldMapKitLayer(); mapEngine.StaticLayers.Add(worldMapKitLayer); //InMemoryFeatureLayer to display features for MultilineShape and PointShape. InMemoryFeatureLayer inMemoryFeatureLayer = new InMemoryFeatureLayer(); inMemoryFeatureLayer.ZoomLevelSet.ZoomLevel01.DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.FromArgb(150,GeoColor.StandardColors.Red), 8, false); inMemoryFeatureLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.CreateSimplePointStyle(PointSymbolType.Circle, GeoColor.StandardColors.Green, 15); inMemoryFeatureLayer.ZoomLevelSet.ZoomLevel01.DefaultTextStyle = TextStyles.CreateSimpleTextStyle("Text", "Arial", 12, DrawingFontStyles.Bold, GeoColor.StandardColors.Black); inMemoryFeatureLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20; //Creates the MultiLineShape. MultilineShape multiLineShape = new MultilineShape(); LineShape lineShape1 = new LineShape(); lineShape1.Vertices.Add(new Vertex(-95.3002, 38.9625)); lineShape1.Vertices.Add(new Vertex(-95.2988, 38.9621)); LineShape lineShape2 = new LineShape(); lineShape2.Vertices.Add(new Vertex(-95.2988,38.9621)); lineShape2.Vertices.Add(new Vertex(-95.2961,38.962)); LineShape lineShape3 = new LineShape(); lineShape3.Vertices.Add(new Vertex(-95.2961,38.962)); lineShape3.Vertices.Add(new Vertex(-95.2945,38.9622)); LineShape lineShape4 = new LineShape(); lineShape4.Vertices.Add(new Vertex(-95.2945,38.9622)); lineShape4.Vertices.Add(new Vertex(-95.2885,38.9622)); multiLineShape.Lines.Add(lineShape1); multiLineShape.Lines.Add(lineShape2); multiLineShape.Lines.Add(lineShape3); multiLineShape.Lines.Add(lineShape4); double Longitude = -95.2953; double Latitude = 38.9621; //Addss the features with the columns. inMemoryFeatureLayer.Open(); inMemoryFeatureLayer.EditTools.BeginTransaction(); inMemoryFeatureLayer.Columns.Add(new FeatureSourceColumn("Text")); Feature multilineFeature = new Feature(multiLineShape); multilineFeature.ColumnValues.Add("Text", "Multiline"); inMemoryFeatureLayer.InternalFeatures.Add("Multiline",multilineFeature); Feature pointFeature = new Feature(new PointShape(Longitude,Latitude)); pointFeature.ColumnValues.Add("Text", "Point"); inMemoryFeatureLayer.InternalFeatures.Add("Point", pointFeature); inMemoryFeatureLayer.EditTools.CommitTransaction(); inMemoryFeatureLayer.Close(); mapEngine.DynamicLayers.Add("MultilineLayer",inMemoryFeatureLayer); DrawImage(); } private void button1_Click(object sender, EventArgs e) { InMemoryFeatureLayer inmemoryFeatureLayer = (InMemoryFeatureLayer)mapEngine.DynamicLayers[0]; PointShape pointShape = (PointShape)inmemoryFeatureLayer.InternalFeatures[1].GetShape(); RemoveLinesFromMultilineShapeLine("MultilineLayer", "Multiline", pointShape.X, pointShape.Y); DrawImage(); } //Removes a LineShape of the MultilineShape based on a Point. public void RemoveLinesFromMultilineShapeLine(string inMemoryFeatureLayerKey, string multilineKey, double Longitude, double Latitude) { InMemoryFeatureLayer lineLayer = null; if (mapEngine.DynamicLayers.Contains(inMemoryFeatureLayerKey)) { if (mapEngine.DynamicLayers[inMemoryFeatureLayerKey] is InMemoryFeatureLayer) { lineLayer = (InMemoryFeatureLayer)mapEngine.DynamicLayers[inMemoryFeatureLayerKey]; if (lineLayer.InternalFeatures.Contains(multilineKey)) { MultilineShape existingMultiLineShape = (MultilineShape)lineLayer.InternalFeatures[multilineKey].GetShape(); int index = 0; EllipseShape ellipseShape = new EllipseShape(new PointShape(Longitude, Latitude), 5, GeographyUnit.DecimalDegree, DistanceUnit.Meter); foreach (LineShape lineShape in existingMultiLineShape.Lines) { //If the LineShape crosses the ellipseShape then we remove that LineShape. if (lineShape.Crosses(ellipseShape)) { existingMultiLineShape.Lines.RemoveAt(index); break; } index = index + 1; } Dictionary<string,string> columnValues= lineLayer.InternalFeatures[multilineKey].ColumnValues; lineLayer.InternalFeatures[multilineKey] = new Feature(existingMultiLineShape, columnValues); } } } } private void DrawImage() { if (bitmap != null) { bitmap.Dispose(); } bitmap = new Bitmap(Map.Width, Map.Height); mapEngine.OpenAllLayers(); mapEngine.DrawStaticLayers(bitmap, GeographyUnit.DecimalDegree); mapEngine.DrawDynamicLayers(bitmap, GeographyUnit.DecimalDegree); mapEngine.CloseAllLayers(); Map.Image = bitmap; } private void ToolBar_ButtonClick(object sender, ToolBarButtonClickEventArgs e) { switch (e.Button.Tag.ToString()) { case "Zoom In": mapEngine.CurrentExtent.ScaleDown(50); break; case "Zoom Out": mapEngine.CurrentExtent.ScaleUp(50); break; case "Full Extent": mapEngine.CurrentExtent = ExtentHelper.GetDrawingExtent(new RectangleShape(-180.0, 83.0, 180.0, -90.0), Map.Width, Map.Height); break; case "Pan Left": mapEngine.CurrentExtent = ExtentHelper.Pan(mapEngine.CurrentExtent, PanDirection.Left, 20); break; case "Pan Right": mapEngine.CurrentExtent = ExtentHelper.Pan(mapEngine.CurrentExtent, PanDirection.Right, 20); break; case "Pan Up": mapEngine.CurrentExtent = ExtentHelper.Pan(mapEngine.CurrentExtent, PanDirection.Up, 20); break; case "Pan Down": mapEngine.CurrentExtent = ExtentHelper.Pan(mapEngine.CurrentExtent, PanDirection.Down, 20); break; default: break; } DrawImage(); } private void btnClose_Click(object sender, EventArgs e) { this.Close(); } private void Map_MouseMove(object sender, MouseEventArgs e) { //Displays the X and Y in screen coordinates. statusStrip1.Items["toolStripStatusLabelScreen"].Text = "X:" + e.X + " Y:" + e.Y; //Gets the PointShape in world coordinates from screen coordinates. PointShape pointShape = ExtentHelper.ToWorldCoordinate(mapEngine.CurrentExtent, new ScreenPointF(e.X, e.Y), Map.Width, Map.Height); //Displays world coordinates. statusStrip1.Items["toolStripStatusLabelWorld"].Text = "(world) X:" + Math.Round(pointShape.X, 4) + " Y:" + Math.Round(pointShape.Y, 4); } } }