public void CanWritePolygonWithInnerRing()
{
var ring1 = new List <Pnt3D>
{
new Pnt3D(0, 0, 9),
new Pnt3D(0, 100, 8),
new Pnt3D(100, 100, 5),
new Pnt3D(100, 20, 9)
};
RingGroup polygon = CreatePoly(ring1);
polygon.AddInteriorRing(new Linestring(new[]
{
new Pnt3D(25, 50, 0),
new Pnt3D(50, 50, 0),
new Pnt3D(50, 75, 0),
new Pnt3D(25, 75, 0),
new Pnt3D(25, 50, 0)
}
));
WkbGeomWriter writer = new WkbGeomWriter();
byte[] bytes = writer.WritePolygon(polygon);
WkbGeomReader reader = new WkbGeomReader();
RingGroup deserialized = reader.ReadPolygon(new MemoryStream(bytes));
Assert.IsTrue(deserialized.Equals(polygon));
}
public void CanReadWriteSingleRingPolygonXyz()
{
IPolygon poly = GeometryFactory.CreatePolygon(2600000, 1200000, 2601000, 1201000, 400);
WkbGeometryWriter writer = new WkbGeometryWriter();
byte[] wkb = writer.WritePolygon(poly);
// Wkx
var ordinates = Ordinates.Xyz;
LinearRing wkxLinearRing =
ToWkxLinearRing(GeometryUtils.GetWKSPointZs(poly), ordinates);
byte[] wkx = ToChristianSchwarzWkb(ToWkxPolygon(wkxLinearRing));
Assert.AreEqual(wkx, wkb);
// Bonus test: Geom
WkbGeomWriter geomWriter = new WkbGeomWriter();
RingGroup ringGroup = GeometryConversionUtils.CreateRingGroup(poly);
byte[] wkbGeom = geomWriter.WritePolygon(ringGroup, ordinates);
Assert.AreEqual(wkb, wkbGeom);
WkbGeometryReader reader = new WkbGeometryReader();
IPolygon restored = reader.ReadPolygon(new MemoryStream(wkb));
Assert.IsTrue(GeometryUtils.AreEqual(poly, restored));
WkbGeomReader geomReader = new WkbGeomReader();
Assert.IsTrue(
ringGroup.Equals(geomReader.ReadPolygon(new MemoryStream(wkbGeom))));
}
public void CanReadWriteSingleExteriorRingWithIslandsPolygonXyz()
{
ISpatialReference sr = SpatialReferenceUtils.CreateSpatialReference(
WellKnownHorizontalCS.LV95, WellKnownVerticalCS.LHN95);
IPolygon outerRing =
GeometryFactory.CreatePolygon(2600000, 1200000, 2601000, 1201000, 432);
outerRing.SpatialReference = sr;
IPolygon innerRing =
GeometryFactory.CreatePolygon(2600100, 1200100, 2600200, 1200200, 321);
innerRing.SpatialReference = sr;
IPolygon polyWithHole = (IPolygon)IntersectionUtils.Difference(outerRing, innerRing);
WkbGeometryWriter writer = new WkbGeometryWriter();
byte[] wkb = writer.WritePolygon(polyWithHole);
// Wkx
var ordinates = Ordinates.Xyz;
IGeometry exteriorRing = GeometryUtils.GetParts(polyWithHole).First();
IGeometry interiorRing = GeometryUtils.GetPaths(polyWithHole).Last();
LinearRing wkxOuterRing = ToWkxLinearRing(exteriorRing, ordinates);
LinearRing wkxInnerRing = ToWkxLinearRing(interiorRing, ordinates);
byte[] wkx = ToChristianSchwarzWkb(ToWkxPolygon(wkxOuterRing, new[] { wkxInnerRing }));
Assert.AreEqual(wkx, wkb);
// Bonus test: Geom
WkbGeomWriter geomWriter = new WkbGeomWriter();
RingGroup ringGroup = GeometryConversionUtils.CreateRingGroup(polyWithHole);
byte[] wkbGeom = geomWriter.WritePolygon(ringGroup, ordinates);
Assert.AreEqual(wkb, wkbGeom);
WkbGeometryReader reader = new WkbGeometryReader();
IPolygon restored = reader.ReadPolygon(new MemoryStream(wkb));
Assert.IsTrue(GeometryUtils.AreEqual(polyWithHole, restored));
// Geom:
WkbGeomReader geomReader = new WkbGeomReader();
Assert.IsTrue(
ringGroup.Equals(geomReader.ReadPolygon(new MemoryStream(wkbGeom))));
}
public void CanReadClockwiseWindingPolygon()
{
// Some OGC 1.1 implementations do not have counter-clockwise polygon winding order:
var ring1 = new List <Pnt3D>
{
new Pnt3D(0, 0, 9),
new Pnt3D(0, 100, 8),
new Pnt3D(100, 100, 5),
new Pnt3D(100, 20, 9)
};
RingGroup polygon = CreatePoly(ring1);
polygon.AddInteriorRing(new Linestring(new[]
{
new Pnt3D(25, 50, 0),
new Pnt3D(50, 50, 0),
new Pnt3D(50, 75, 0),
new Pnt3D(25, 75, 0),
new Pnt3D(25, 50, 0)
}
));
RingGroup inverted = (RingGroup)polygon.Clone();
inverted.ReverseOrientation();
WkbGeomWriter writer = new WkbGeomWriter();
byte[] bytes = writer.WritePolygon(inverted);
const bool assumeWkbPolygonsClockwise = true;
WkbGeomReader reader = new WkbGeomReader(assumeWkbPolygonsClockwise);
RingGroup deserialized = reader.ReadPolygon(new MemoryStream(bytes));
Assert.IsTrue(deserialized.Equals(polygon));
}