/// <summary>
/// Clear the previously displayed features from the map, and add new features
/// </summary>
private void ClearMapAndAddFeatures(Collection <Feature> validatedFeatures, Collection <Feature> resultFeatures, Collection <Feature> filterFeatures = null)
{
// Get the InMemoryFeatureLayers from the MapView
InMemoryFeatureLayer validatedFeaturesLayer = (InMemoryFeatureLayer)mapView.FindFeatureLayer("Validated Features");
InMemoryFeatureLayer filterFeaturesLayer = (InMemoryFeatureLayer)mapView.FindFeatureLayer("Filter Features");
InMemoryFeatureLayer resultFeaturesLayer = (InMemoryFeatureLayer)mapView.FindFeatureLayer("Result Features");
validatedFeaturesLayer.Open();
filterFeaturesLayer.Open();
resultFeaturesLayer.Open();
// Clear the existing features from each layer
validatedFeaturesLayer.Clear();
filterFeaturesLayer.Clear();
resultFeaturesLayer.Clear();
// Add (blue) filter features to the map, if there are any
if (filterFeatures != null)
{
foreach (Feature filterFeature in filterFeatures)
{
filterFeaturesLayer.InternalFeatures.Add(filterFeature);
}
}
// Add (green) validated features to the map
foreach (Feature validatedFeature in validatedFeatures)
{
validatedFeaturesLayer.InternalFeatures.Add(validatedFeature);
}
// Add (red) invalid features to the map
foreach (Feature resultFeature in resultFeatures)
{
resultFeaturesLayer.InternalFeatures.Add(resultFeature);
}
// Refresh/redraw the layers and reset the map extent
LayerOverlay featureOverlay = (LayerOverlay)mapView.Overlays["Features Overlay"];
mapView.CurrentExtent = RectangleShape.ScaleUp(featureOverlay.GetBoundingBox(), 20).GetBoundingBox(); mapView.Refresh();
validatedFeaturesLayer.Close();
filterFeaturesLayer.Close();
resultFeaturesLayer.Close();
}
private void MainForm_Loaded(object sender, RoutedEventArgs e)
{
// set map properties
Map.MinimumScale = 0;
Map.MapUnit = GeographyUnit.DecimalDegree;
Map.BackgroundOverlay.BackgroundBrush = new GeoSolidBrush(GeoColor.StandardColors.AliceBlue);
Map.MapTools.Logo.IsEnabled = false;
// create source overlay and layer style
var sourceOverlay = new LayerOverlay()
{
TileType = TileType.SingleTile,
DrawingQuality = DrawingQuality.HighSpeed
};
var layerStyle = new ValueStyle("State", new Collection <ValueItem>()
{
new ValueItem("0", new AreaStyle(GeoPens.Black, GeoBrushes.Green)),
new ValueItem("1", new AreaStyle(GeoPens.Black, GeoBrushes.Yellow)),
new ValueItem("2", new AreaStyle(GeoPens.Black, GeoBrushes.Red)),
new ValueItem("3", new AreaStyle(GeoPens.Black, GeoBrushes.Orange))
});
for (int layerIndex = 0; layerIndex < layerCount; layerIndex++)
{
// create source layer
var sourceLayer = new InMemoryFeatureLayer()
{
Name = $"Source Layer #{layerIndex}"
};
sourceLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(layerStyle);
sourceLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
// add rectangle shape features to source layer, calculate position and size of each rectangle shapes
double featureInterval = 1.0;
double featureSize = 1.0;
for (int row = 0; row < featureRowCount; row++)
{
for (int column = 0; column < featureColumnCount; column++)
{
double upperLeftX = column * (featureSize + featureInterval);
double upperLeftY = (layerIndex * featureRowCount + row) * (featureSize + featureInterval);
var feature = new Feature(new PolygonShape(new RingShape(new Collection <Vertex>()
{
new Vertex(upperLeftX, upperLeftY),
new Vertex(upperLeftX, upperLeftY + featureSize),
new Vertex(upperLeftX + featureSize, upperLeftY + featureSize),
new Vertex(upperLeftX + featureSize, upperLeftY)
})))
{
Id = $"{column}.{row}"
};
feature.ColumnValues.Add("State", "0");
sourceLayer.InternalFeatures.Add(feature.Id, feature);
}
}
sourceOverlay.Layers.Add(sourceLayer);
Layers.Add(sourceLayer);
}
// refresh the map
Map.Overlays.Add("SourceOverlay", sourceOverlay);
Map.CurrentExtent = sourceOverlay.GetBoundingBox();
Map.Refresh();
}