public Coordinate2D( double x, double y )
Public Function New( _ ByVal x As Double, _ ByVal y As Double _ )
Coordinate2D v = new Coordinate2D(0, 1); // v.Magnitude = 1 Coordinate2D other = new Coordinate2D(-1, 0); double dotProduct = v.DotProduct(other); // dotProduct = 0 Coordinate2D w = v + other; // w = (-1, 1) w += other; // w = (-2, 1) w -= other; // w = (-1, 1) w = v; w.Rotate(Math.PI, other); // w = (-2, -1) w = other; w.Scale(-4); // w = (4, 0) // w.Magnitude = 4 w.Move(-1, 4); // w = (3, 4) // w.Magnitude = 5 w.Move(-6, -1); Tuple<double, double> components = w.QueryComponents(); // components = (-3, 3) // w.Magnitude = 3 * Math.Sqrt(2) Coordinate2D unitVector = w.GetUnitVector(); // w = (-Math.Sqrt(2) / 2, Math.Sqrt(2) / 2) // w.Magnitude = 1 w.SetComponents(3, 4);
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)); // 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)); PolygonBuilderEx pbEx = new PolygonBuilderEx(outerCoordinates); Polygon donutEx = pbEx.ToGeometry() as Polygon; double areaEx = donutEx.Area; // area = 100 pbEx.AddPart(innerCoordinates); donutEx = pbEx.ToGeometry() as Polygon; areaEx = donutEx.Area; // area = 84.0 areaEx = GeometryEngine.Instance.Area(donutEx); // area = 84.0
Target Platforms: Windows 11, Windows 10
Coordinate2D Structure Coordinate2D Members Overload List