using System;
using System.Collections.ObjectModel;
using System.Drawing;
using System.Windows.Forms;
using ThinkGeo.MapSuite.Core;
using ThinkGeo.MapSuite.Routing;
namespace RoutingTolerance
{
public partial class TestForm : Form
{
private MapEngine mapEngine = new MapEngine();
private Bitmap bitmap = null;
private ShapeFileFeatureLayer StreetLayer = null;
private RoutingLayer routingLayer = null;
private Collection<PointShape> pointShapes = new Collection<PointShape>();
private string text1, text2;
public TestForm()
{
InitializeComponent();
}
private void TestForm_Load(object sender, EventArgs e)
{
//Text for the instructions:
text1 = "Click on the map to set the Start point.";
text2 = "Click on the map to set the End point.";
label1.Text = text1;
// Defines layer to render the Austin streets
StreetLayer = new ShapeFileFeatureLayer(@"..\..\Data\austinstreets.shp");
StreetLayer.ZoomLevelSet.ZoomLevel01.DefaultLineStyle = LineStyles.LocalRoad3;
StreetLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
mapEngine.StaticLayers.Add("AustinStreets", StreetLayer);
//Routing layer to render the route.
routingLayer = new RoutingLayer();
mapEngine.DynamicLayers.Add("RoutingLayer", routingLayer);
mapEngine.CurrentExtent = new RectangleShape(-97.7566, 30.3048, -97.7206, 30.2764);
DrawImage();
}
private void Map_MouseClick(object sender, MouseEventArgs e)
{
//Gets the world point for where the user clicked.
PointShape pointShape = ExtentHelper.ToWorldCoordinate(mapEngine.CurrentExtent, e.X, e.Y, Map.Width, Map.Height);
//Checks if there are street features within the tolerance of the clicked point.
StreetLayer.Open();
Collection<Feature> features = StreetLayer.QueryTools.GetFeaturesWithinDistanceOf(pointShape, GeographyUnit.DecimalDegree,
DistanceUnit.Meter, 25, ReturningColumnsType.NoColumns);
StreetLayer.Close();
if (features.Count == 0)
{
//If no feature found within the tolerance, warns the user.
string message;
if (pointShapes.Count == 0)
{
message = "The Start point must be within 25 meters of a street";
}
else
{
message = "The End point must be within 25 meters of a street";
}
MessageBox.Show(message, "", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
else
{
//If features are found, set the Start point at first click. At the second click, sets the end point and builds the route.
if (pointShapes.Count < 1)
{
routingLayer.Routes.Clear();
pointShapes.Add(pointShape);
routingLayer.StartPoint = pointShape;
routingLayer.EndPoint = null;
DrawImage();
label1.Text = text2;
}
else
{
//Finds the route between start point and end point. The rtg file needs to be build by Routing explorer if it has not been done already.
RtgRoutingSource rtgRoutingSource = new RtgRoutingSource(@"..\..\Data\austinstreets.rtg");
RoutingEngine routingEngine = new RoutingEngine(rtgRoutingSource, StreetLayer.FeatureSource);
pointShapes.Add(pointShape);
LineShape routeLineShape = routingEngine.GetRoute(pointShapes[0], pointShapes[1]).Route;
routingLayer.EndPoint = pointShape;
routingLayer.Routes.Add(routeLineShape);
pointShapes.Clear();
DrawImage();
label1.Text = text1;
}
}
}
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);
}
}
}