Parameters
- x
- X value. This is longitude when working with geographic coordinates.
- y
- Y value. This is latitude when working with geographic coordinates.
List<Coordinate2D> outerCoordinates = new List<Coordinate2D>(); outerCoordinates.Add(new Coordinate2D(10.0, 10.0)); outerCoordinates.Add(new Coordinate2D(10.0, 20.0)); outerCoordinates.Add(new Coordinate2D(20.0, 20.0)); outerCoordinates.Add(new Coordinate2D(20.0, 10.0)); // Builder constructors need to run on the MCT. ArcGIS.Desktop.Framework.Threading.Tasks.QueuedTask.Run(() => { // use the PolygonBuilder as we wish to manipulate the parts using (PolygonBuilder pb = new PolygonBuilder(outerCoordinates)) { Polygon donut = pb.ToGeometry(); double area = donut.Area; // area = 100 // define the inner polygon as anti-clockwise List<Coordinate2D> innerCoordinates = new List<Coordinate2D>(); innerCoordinates.Add(new Coordinate2D(13.0, 13.0)); innerCoordinates.Add(new Coordinate2D(17.0, 13.0)); innerCoordinates.Add(new Coordinate2D(17.0, 17.0)); innerCoordinates.Add(new Coordinate2D(13.0, 17.0)); pb.AddPart(innerCoordinates); donut = pb.ToGeometry(); area = donut.Area; // area = 84.0 area = GeometryEngine.Instance.Area(donut); // area = 84.0 } });
Target Platforms: Windows 10, Windows 8.1