ThinkGeo Cloud
ThinkGeo UI Controls
ThinkGeo Open Source
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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 CustomZoomLevels { 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.ObjectModel; using System.Drawing; using System.Windows.Forms; using ThinkGeo.MapSuite.Core; namespace CustomZoomLevels { 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) { ShapeFileFeatureLayer layer1 = new ShapeFileFeatureLayer(@"..\..\Data\austinstreets.shp"); LineStyle lineStyle = new LineStyle(new GeoPen(GeoColor.StandardColors.Red, 2)); //Sets the custom zoom levels based on a scale of 1: 150,000 layer1.ZoomLevelSet = GetCustomZoomLevelSet(150000); //Sets the symbols for each ten custom zoom levels. layer1.ZoomLevelSet.CustomZoomLevels[0].DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.Red, 2, true); layer1.ZoomLevelSet.CustomZoomLevels[1].DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.Green, 2, true); layer1.ZoomLevelSet.CustomZoomLevels[2].DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.Orange, 2, true); layer1.ZoomLevelSet.CustomZoomLevels[3].DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.OrangeRed, 2, true); layer1.ZoomLevelSet.CustomZoomLevels[4].DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.Blue, 2, true); layer1.ZoomLevelSet.CustomZoomLevels[5].DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.BlueViolet, 2, true); layer1.ZoomLevelSet.CustomZoomLevels[6].DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.DarkSeaGreen, 2, true); layer1.ZoomLevelSet.CustomZoomLevels[7].DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.DeepPink, 2, true); layer1.ZoomLevelSet.CustomZoomLevels[8].DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.YellowGreen, 2, true); layer1.ZoomLevelSet.CustomZoomLevels[9].DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.Violet, 2, true); mapEngine.StaticLayers.Add(layer1); // Set the extent and the background color mapEngine.BackgroundFillBrush = new GeoSolidBrush(GeoColor.StandardColors.LightGoldenrodYellow); layer1.Open(); mapEngine.CurrentExtent = ExtentHelper.GetDrawingExtent(layer1.GetBoundingBox(), Map.Width, Map.Height); layer1.Close(); DrawImage(); } //This function sets ten zoom levels based on a reference scale. Each zoom level is half in scale of the previous one. private ZoomLevelSet GetCustomZoomLevelSet(double initialScale) { ZoomLevelSet zoomLevelSet = new ZoomLevelSet(); zoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(initialScale)); zoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(initialScale / 2)); zoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(initialScale / 4)); zoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(initialScale / 8)); zoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(initialScale / 16)); zoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(initialScale / 32)); zoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(initialScale / 64)); zoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(initialScale / 128)); zoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(initialScale / 256)); zoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(initialScale / 512)); return zoomLevelSet; } 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); } } }