public void CanWriteAndReadMultiPolygonWithInnerRing()
{
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)
};
var disjoint = new List <Pnt3D>();
disjoint.Add(new Pnt3D(140, -10, 0));
disjoint.Add(new Pnt3D(140, 30, 23));
disjoint.Add(new Pnt3D(300, 30, 56));
disjoint.Add(new Pnt3D(300, -10, 0));
RingGroup poly1 = CreatePoly(ring1);
poly1.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)
}
));
Linestring disjointRing = CreateRing(disjoint);
var poly2 = new RingGroup(disjointRing);
var multipolygon = new List <RingGroup>(new[] { poly1, poly2 });
WkbGeomWriter writer = new WkbGeomWriter();
byte[] bytes = writer.WriteMultipolygon(multipolygon);
WkbGeomReader reader = new WkbGeomReader();
IList <RingGroup> deserialized = reader.ReadMultiPolygon(new MemoryStream(bytes));
Assert.IsTrue(deserialized[0].Equals(multipolygon[0]));
Assert.IsTrue(deserialized[1].Equals(multipolygon[1]));
}
public void CanReadWriteMultipartPolygonXyz()
{
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, 421);
innerRing.SpatialReference = sr;
IPolygon polyWithHole = (IPolygon)IntersectionUtils.Difference(outerRing, innerRing);
IPolygon poly2 = GeometryFactory.CreatePolygon(2610000, 1200000, 2611000, 1201000, 543);
poly2.SpatialReference = sr;
IPolygon multiPolygon = (IPolygon)GeometryUtils.Union(polyWithHole, poly2);
Assert.IsTrue(GeometryUtils.IsZAware(multiPolygon));
GeometryUtils.Simplify(multiPolygon);
WkbGeometryWriter writer = new WkbGeometryWriter();
byte[] wkb = writer.WritePolygon(multiPolygon);
// Wkx
var ordinates = Ordinates.Xyz;
IList <IGeometry> parts = GeometryUtils.GetParts(multiPolygon).ToList();
IGeometry exteriorRing = parts[0];
IGeometry interiorRing = parts[1];
IGeometry secondExteriorRing = parts[2];
LinearRing wkxOuterRing = ToWkxLinearRing(exteriorRing, ordinates);
LinearRing wkxInnerRing = ToWkxLinearRing(interiorRing, ordinates);
Polygon wkxPolygon1 = ToWkxPolygon(wkxOuterRing, new[] { wkxInnerRing });
Polygon wkxPolygon2 = ToWkxPolygon(ToWkxLinearRing(secondExteriorRing, ordinates));
MultiPolygon wkxMultiPolygon = new MultiPolygon(new[] { wkxPolygon1, wkxPolygon2 });
byte[] wkx = ToChristianSchwarzWkb(wkxMultiPolygon);
Assert.AreEqual(wkx, wkb);
// Bonus test: Geom
WkbGeomWriter geomWriter = new WkbGeomWriter();
MultiPolycurve multiPly = GeometryConversionUtils.CreateMultiPolycurve(multiPolygon);
byte[] wkbGeom = geomWriter.WriteMultipolygon(multiPly, ordinates);
Assert.AreEqual(wkb, wkbGeom);
WkbGeometryReader reader = new WkbGeometryReader();
IPolygon restored = reader.ReadPolygon(new MemoryStream(wkb));
Assert.IsTrue(GeometryUtils.AreEqual(multiPolygon, restored));
// Geom:
WkbGeomReader geomReader = new WkbGeomReader();
IList <RingGroup> readMultiPolygon =
geomReader.ReadMultiPolygon(new MemoryStream(wkbGeom));
var readMultiPolycurve = new MultiPolycurve(
readMultiPolygon.SelectMany(g => g.GetLinestrings()));
Assert.IsTrue(multiPly.Equals(readMultiPolycurve));
// As multipatch
IMultiPatch multipatch = GeometryFactory.CreateMultiPatch(multiPolygon);
wkb = writer.WriteMultipatch(multipatch);
IMultiPatch readMultipatch = (IMultiPatch)reader.ReadGeometry(new MemoryStream(wkb));
// TODO: Implement AreEqual for multipatch that is more permissive regarding First/Outer ring type
AssertEqual(multipatch, readMultipatch);
}