private void wpfMap1_MouseMove(object sender, MouseEventArgs e)
{
//Gets the PointShape in world coordinates from screen coordinates.
Point point = e.MouseDevice.GetPosition(null);
ScreenPointF screenPointF = new ScreenPointF((float)point.X, (float)point.Y);
PointShape pointShape = ExtentHelper.ToWorldCoordinate(wpfMap1.CurrentExtent, screenPointF, (float)wpfMap1.ActualWidth, (float)wpfMap1.ActualHeight);
//Uses the WrapDatelineProjection to get the proper decimal degree value on the virtual maps to the right and left of the central map.
WrapDatelineProjection wrapDatelineProjection = new WrapDatelineProjection();
//Sets the HalfExtentWidth of the wrapdateline overlay we want to apply the projection on.
//Here it is 180 because, the full extent width is 360.
wrapDatelineProjection.HalfExtentWidth = wpfMap1.Overlays["WMK"].GetBoundingBox().Width / 2;//180;
wrapDatelineProjection.Open();
Vertex projVertex = wrapDatelineProjection.ConvertToExternalProjection(pointShape.X, pointShape.Y);
wrapDatelineProjection.Close();
try
{
//Shows the real coordinates.
textBox1.Text = "real X: " + string.Format("{0}", System.Math.Round(pointShape.X)) +
" real Y: " + string.Format("{0}", System.Math.Round(pointShape.Y));
//Shows the Long Lat after the WrapDatelineProjection
textBox3.Text = "Long.: " + System.Math.Round(projVertex.X) +
" Lat.: " + System.Math.Round(projVertex.Y);
}
catch { }
}
private void wpfMap1_MapClick(object sender, MapClickWpfMapEventArgs e)
{
try
{
//Uses the WrapDatelineProjection to create the target pointshape for GetFeatureNearestTo spatial query function.
WrapDatelineProjection wrapDatelineProjection = new WrapDatelineProjection();
//Sets the HalfExtentWidth of the wrapdateline overlay we want to apply the projection on.
//Here it is 180 because, the full extent width is 360.
wrapDatelineProjection.HalfExtentWidth = wpfMap1.Overlays["WMK"].GetBoundingBox().Width / 2;//180;
//Gets the valid world coordinate regardless to where the user click on the map
wrapDatelineProjection.Open();
Vertex projVertex = wrapDatelineProjection.ConvertToExternalProjection(e.WorldX, e.WorldY);
wrapDatelineProjection.Close();
//Here we just use the feature source of the shapefile because we don't display it, we just use it for doing the spatial query.
ShapeFileFeatureSource shapeFileFeatureSource = new ShapeFileFeatureSource(@"../../data/countries02.shp");
shapeFileFeatureSource.Open();
//Uses the projected X and Y values for the Spatial Query.
Collection <Feature> features = shapeFileFeatureSource.GetFeaturesNearestTo(new PointShape(projVertex), wpfMap1.MapUnit, 1, ReturningColumnsType.NoColumns);
shapeFileFeatureSource.Close();
LayerOverlay dynamicOverlay = (LayerOverlay)wpfMap1.Overlays["DynamicOverlay"];
InMemoryFeatureLayer inMemoryFeatureLayer = (InMemoryFeatureLayer)dynamicOverlay.Layers["SelectLayer"];
//Clears the InMemoryFeatureLayer and add the feature as the result of the spatial query.
inMemoryFeatureLayer.Open();
inMemoryFeatureLayer.InternalFeatures.Clear();
inMemoryFeatureLayer.InternalFeatures.Add(features[0]);
inMemoryFeatureLayer.Close();
//Refreshes only the overlay with the updated InMemoryFeatureLayer.
wpfMap1.Refresh(dynamicOverlay);
}
catch { }
}
