Creating a Complex Polygon

This example demonstrates how to create a polygon based on a multipolygon geometry and set its properties. This example uses the IGeometryCreator (CreateGeometryFromWKT, CreateLinearRingGeometry, CreatePolygonGeometry) and ICreator (CreatePolygon, CreateColor, GeometryCreator), IPosition (Distance, Pitch) and INavigate (FlyTo) properties and methods.

function ComplexPolygon()

      {

      try

      {

      // Create polygon with hole geometry from well-known-text

      var complexGeometry1 = sgworld.Creator.GeometryCreator.CreateGeometryFromWKT("POLYGON((-.900091 26.739261,-.906338 26.840896,-.591731 26.951601,-.9248 26.717179,-.900091 26.739261),(-.873569 26.9371,-.616 26.772908,-.1242 26.846308,-.873569 26.9371))");

      // Create polygon

      // Create line color using creator by specifying red,green,blue,alpha values

      var lineColor1 = sgworld.Creator.CreateColor(255, 0, 0, 0);

      var fillColor1 = "#00ff00"; // we can also specify color using HTML notation

      var polygon1 = sgworld.Creator.CreatePolygon(complexGeometry1, lineColor1, fillColor1, 2 /*AltitudeTypeCode.ATC_ON_TERRAIN*/, "", "Polygon with hole");

      // create multipolygon from array of x,z,y points

      // Polygon geometry consists of LinearRing that specifies exterior ring and array of LinearRing geometries that specify interior rings

      // create exterior ring using array of coordinates

      var exteriorRing = sgworld.Creator.GeometryCreator.CreateLinearRingGeometry([-.593456, 26.692189, 1000, -.569379, 26.654723, 2000, -.482195, 26.724591, 1000, -.55208, 26.771137, 1000]);

      var interiorRing1 = sgworld.Creator.GeometryCreator.CreateLinearRingGeometry([-.577327, 26.713192, 1000, -.5601, 26.726351, 1000, -.569138, 26.715869, 1000]);

      var interiorRing2 = sgworld.Creator.GeometryCreator.CreateLinearRingGeometry([-.55315, 26.691784, 2000, -.555867, 26.673088, 2000, -.5252610, 26.688447, 2000]);

      var complexGeometry2 = sgworld.Creator.GeometryCreator.CreatePolygonGeometry(exteriorRing, [interiorRing1,interiorRing2 ] );

      var fillColor2 = "#0000ff";

      var lineColor2 = "#00ff00";

      // Create polygon

      var polygon2 = sgworld.Creator.CreatePolygon(complexGeometry2, lineColor2, fillColor2, 3 /* AltitudeTypeCode.ATC_TERRAIN_ABSOLUTE */, "", "Polygon with 2 holes");

      polygon2.Position.Distance = 000;

      polygon2.Position.Pitch = -45;

      sgworld.Navigate.FlyTo(polygon2.Position);

      }

      catch(e)

      {

      alert("Unexpected error:" + ex.description);

      }

      }