void timer_Tick(object sender, EventArgs e)
{
//Gets the GPS info from the textfile.
DataTable carData = GetCarData();
float angleOffset;
double angle;
LayerOverlay dynamicOverlay = (LayerOverlay)winformsMap1.Overlays["DynamicOverlay"];
InMemoryFeatureLayer inMemoryFeatureLayer = (InMemoryFeatureLayer)dynamicOverlay.Layers["CarLayer"];
//InMemoryFeatureLayer labelInMemoryFeatureLayer = (InMemoryFeatureLayer)dynamicOverlay.Layers["CarLabel"];
PointShape pointShape = inMemoryFeatureLayer.InternalFeatures[0].GetShape() as PointShape;
// Get the Row of Data we are working with.
DataRow carDataRow = carData.Rows[0];
double Lat = Convert.ToDouble(carDataRow["LAT"]);
double Long = Convert.ToDouble(carDataRow["LONG"]);
//Gets the angle based on the current GPS position and the previous one to get the direction of the vehicle.
angle = GetAngleFromTwoVertices(new Vertex(previousLong, previousLat), new Vertex(Long, Lat));
//Gets the correct icon depending on the direction of the vehicle.
if (previousLong < Long)
{
inMemoryFeatureLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle.Image = carGeoImageDown;
angleOffset = 180;
}
else
{
inMemoryFeatureLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle.Image = carGeoImageUp;
angleOffset = 360;
}
inMemoryFeatureLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle.RotationAngle = angleOffset - (float)angle;
pointShape.X = Long;
pointShape.Y = Lat;
pointShape.Id = "Car";
//Updates the column "VehiclePosition" of the feature to the current Longitude/Latitude.
Feature feature = inMemoryFeatureLayer.InternalFeatures[0];
feature.ColumnValues["VehiclePosition"] = DecimalDegreesHelper.GetDegreesMinutesSecondsStringFromDecimalDegreePoint(pointShape);
//Updates the PointShape of the Feature.
inMemoryFeatureLayer.Open();
inMemoryFeatureLayer.EditTools.BeginTransaction();
inMemoryFeatureLayer.EditTools.Update(pointShape);
inMemoryFeatureLayer.EditTools.CommitTransaction();
inMemoryFeatureLayer.Close();
previousLong = Long;
previousLat = Lat;
winformsMap1.Refresh(dynamicOverlay);
}
private void ShowCoordinate(MouseEventArgs e)
{
PointShape WorldPointR = ExtentHelper.ToWorldCoordinate(winformsMap1.CurrentExtent, e.X, e.Y, winformsMap1.Width, winformsMap1.Height);
statusStrip.Items[1].Text = string.Format(CultureInfo.InvariantCulture, "X: {0:F4} Y: {1:F4}", WorldPointR.X, WorldPointR.Y);
statusStrip.Items[2].Text = string.Format(CultureInfo.InvariantCulture, "X: {0} Y: {1}", e.X, e.Y);
if (winformsMap1.MapUnit == GeographyUnit.DecimalDegree && ((WorldPointR.X > -180 && WorldPointR.X < 180 && WorldPointR.Y > -90 && WorldPointR.Y < 90)))
{
statusStrip.Items[0].Text = DecimalDegreesHelper.GetDegreesMinutesSecondsStringFromDecimalDegreePoint(WorldPointR);
return;
}
statusStrip.Items[0].Text = "";
}
private void TestForm_Load(object sender, EventArgs e)
{
winformsMap1.MapUnit = GeographyUnit.Meter;
winformsMap1.BackgroundOverlay.BackgroundBrush = new GeoSolidBrush(GeoColor.FromArgb(255, 198, 255, 255));
GoogleMapsOverlay googleOverlay = new GoogleMapsOverlay(); //(@"Insert your key here!", @"C:\GoogleCache");
googleOverlay.MapType = GoogleMapsMapType.Terrain;
winformsMap1.Overlays.Add(googleOverlay);
// This sets the zoom levels to map to Googles. We next make sure we snap to the zoomlevels
winformsMap1.ZoomLevelSet = new GoogleMapsZoomLevelSet();
InMemoryFeatureLayer pointLayer = new InMemoryFeatureLayer();
pointLayer.Open();
pointLayer.Columns.Add(new FeatureSourceColumn("Text"));
pointLayer.Close();
//Sets the projection parameters to go from Geodetic (EPSG 4326) or decimal degrees to Google Map projection (Spherical Mercator).
Proj4Projection proj4 = new Proj4Projection();
proj4.InternalProjectionParametersString = Proj4Projection.GetEpsgParametersString(4326);
proj4.ExternalProjectionParametersString = Proj4Projection.GetGoogleMapParametersString();
//Applies the projection to the InMemoryFeatureLayer so that the point in decimal degrees (Longitude/Latitude) can be
//match the projection of Google Map.
pointLayer.FeatureSource.Projection = proj4;
//Values in Longitude and Latitude.
double Longitude = -95.2809;
double Latitude = 38.9543;
//Creates the feature made of a PointShape with the Longitude and Latitude values.
Feature GPSFeature = new Feature(new PointShape(Longitude, Latitude));
//Format the Longitude and Latitude into a nice string as Degrees Minutes and Seconds
string LongLat = DecimalDegreesHelper.GetDegreesMinutesSecondsStringFromDecimalDegreePoint(GPSFeature);
//Sets the InMemoryFeatureLayer to have it displayed with Square symbol and with text.
GPSFeature.ColumnValues.Add("Text", LongLat);
pointLayer.InternalFeatures.Add(GPSFeature);
pointLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.CreateSimplePointStyle(PointSymbolType.Square,
GeoColor.StandardColors.Red, GeoColor.StandardColors.Black, 2, 12);
pointLayer.ZoomLevelSet.ZoomLevel01.DefaultTextStyle = TextStyles.CreateSimpleTextStyle("Text", "Arial", 12, DrawingFontStyles.Bold,
GeoColor.StandardColors.Black, GeoColor.StandardColors.White, 3, -10, 10);
pointLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
LayerOverlay pointOverlay = new LayerOverlay();
pointOverlay.Layers.Add("PointLayer", pointLayer);
winformsMap1.Overlays.Add("PointOverlay", pointOverlay);
//Sets the extend of the map based on the GPS point.
proj4.Open();
Vertex projVertex = proj4.ConvertToExternalProjection(Longitude, Latitude);
proj4.Close();
double extendWidth = 2300;
double extendHeight = 1200;
winformsMap1.CurrentExtent = new RectangleShape((projVertex.X - extendWidth), (projVertex.Y + extendHeight),
(projVertex.X + extendWidth), (projVertex.Y - extendHeight));
winformsMap1.Refresh();
}