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;
}
}
