public void ParsePolygon() { string polygon = "POLYGON((20 20,20 30,30 30,30 20,20 20))"; IPolygon geom = GeometryFromWKT.Parse(polygon) as IPolygon; Assert.IsNotNull(geom); Assert.AreEqual(40, geom.ExteriorRing.Length); Assert.AreEqual(100, geom.Area); Assert.AreEqual(polygon, geom.AsText()); //Test interior rings polygon = "POLYGON((20 20,20 30,30 30,30 20,20 20),(21 21,29 21,29 29,21 29,21 21),(23 23,23 27,27 27,27 23,23 23))"; geom = GeometryFromWKT.Parse(polygon) as IPolygon; Assert.IsNotNull(geom); Assert.AreEqual(40, geom.Shell.Length); Assert.AreEqual(2, geom.Holes.Length); //Assert.AreEqual(52, geom.Area); //Assert.AreEqual(geom.Shell.Area - geom.Holes[0].Area + geom.Holes[1].Area, geom.Area); Assert.AreEqual(polygon, geom.AsText()); //Test empty geometry WKT Assert.IsTrue(GeometryFromWKT.Parse("POLYGON EMPTY").IsEmpty); Assert.AreEqual("POLYGON EMPTY", GeometryFactory.CreatePolygon(null, null).AsText()); }
public override void Start() { IPoint interiorPoint = Factory.CreatePoint(new Coordinate(130, 150)); IPoint exteriorPoint = Factory.CreatePoint(new Coordinate(650, 1500)); ILineString aLine = Factory.CreateLineString(new Coordinate[] { new Coordinate(23, 32.2), new Coordinate(10, 222) }); ILineString anotherLine = Factory.CreateLineString(new Coordinate[] { new Coordinate(0, 1), new Coordinate(30, 30) }); ILineString intersectLine = Factory.CreateLineString(new Coordinate[] { new Coordinate(0, 1), new Coordinate(300, 300) }); try { Write(polygon.Area); Write(polygon.Boundary); Write(polygon.BoundaryDimension); Write(polygon.Centroid); Write(polygon.Coordinate); Write(polygon.Coordinates.Length); Write(polygon.Dimension); Write(polygon.Envelope); Write(polygon.EnvelopeInternal); Write(polygon.ExteriorRing); Write(polygon.InteriorPoint); Write(polygon.InteriorRings.Length); Write(polygon.IsEmpty); Write(polygon.IsSimple); Write(polygon.IsValid); Write(polygon.Length); Write(polygon.NumInteriorRings); Write(polygon.NumPoints); if (polygon.UserData != null) { Write(polygon.UserData); } else { Write("UserData null"); } Write(polygon.Buffer(10)); Write(polygon.Buffer(10, BufferStyle.CapButt)); Write(polygon.Buffer(10, BufferStyle.CapSquare)); Write(polygon.Buffer(10, 20)); Write(polygon.Buffer(10, 20, BufferStyle.CapButt)); Write(polygon.Buffer(10, 20, BufferStyle.CapSquare)); Write(polygon.Contains(interiorPoint)); Write(polygon.Contains(exteriorPoint)); Write(polygon.Contains(aLine)); Write(polygon.Contains(anotherLine)); Write(polygon.Crosses(interiorPoint)); Write(polygon.Crosses(exteriorPoint)); Write(polygon.Crosses(aLine)); Write(polygon.Crosses(anotherLine)); Write(polygon.Difference(interiorPoint)); Write(polygon.Difference(exteriorPoint)); Write(polygon.Difference(aLine)); Write(polygon.Difference(anotherLine)); Write(polygon.Disjoint(interiorPoint)); Write(polygon.Disjoint(exteriorPoint)); Write(polygon.Disjoint(aLine)); Write(polygon.Disjoint(anotherLine)); Write(polygon.Distance(interiorPoint)); Write(polygon.Distance(exteriorPoint)); Write(polygon.Distance(aLine)); Write(polygon.Distance(anotherLine)); Write(polygon.Intersection(interiorPoint)); Write(polygon.Intersection(exteriorPoint)); Write(polygon.Intersection(aLine)); Write(polygon.Intersection(anotherLine)); Write(polygon.Intersects(interiorPoint)); Write(polygon.Intersects(exteriorPoint)); Write(polygon.Intersects(aLine)); Write(polygon.Intersects(anotherLine)); Write(polygon.IsWithinDistance(interiorPoint, 300)); Write(polygon.IsWithinDistance(exteriorPoint, 300)); Write(polygon.IsWithinDistance(aLine, 300)); Write(polygon.IsWithinDistance(anotherLine, 300)); Write(polygon.Overlaps(interiorPoint)); Write(polygon.Overlaps(exteriorPoint)); Write(polygon.Overlaps(aLine)); Write(polygon.Overlaps(anotherLine)); Write(polygon.Relate(interiorPoint)); Write(polygon.Relate(exteriorPoint)); Write(polygon.Relate(aLine)); Write(polygon.Relate(anotherLine)); Write(polygon.SymmetricDifference(interiorPoint)); Write(polygon.SymmetricDifference(exteriorPoint)); Write(polygon.SymmetricDifference(aLine)); Write(polygon.SymmetricDifference(anotherLine)); Write(polygon.ToString()); Write(polygon.AsText()); Write(polygon.Touches(interiorPoint)); Write(polygon.Touches(exteriorPoint)); Write(polygon.Touches(aLine)); Write(polygon.Touches(anotherLine)); Write(polygon.Union(interiorPoint)); Write(polygon.Union(exteriorPoint)); Write(polygon.Union(aLine)); Write(polygon.Union(anotherLine)); string aPoly = "POLYGON ((20 20, 100 20, 100 100, 20 100, 20 20))"; string anotherPoly = "POLYGON ((20 20, 100 20, 100 100, 20 100, 20 20), (50 50, 60 50, 60 60, 50 60, 50 50))"; IGeometry geom1 = Reader.Read(aPoly); Write(geom1.AsText()); IGeometry geom2 = Reader.Read(anotherPoly); Write(geom2.AsText()); // ExpandToInclude tests Envelope envelope = new Envelope(0, 0, 0, 0); envelope.ExpandToInclude(geom1.EnvelopeInternal); envelope.ExpandToInclude(geom2.EnvelopeInternal); Write(envelope.ToString()); // The polygon is not correctly ordered! Calling normalize we fix the problem... polygon.Normalize(); byte[] bytes = polygon.AsBinary(); IGeometry test1 = new WKBReader().Read(bytes); Write(test1.ToString()); bytes = new GDBWriter().Write(polygon); test1 = new GDBReader().Read(bytes); Write(test1.ToString()); } catch (Exception ex) { throw ex; } }