public static PolygonGeoShape GetPolygon(Geometry geom, ICoordinateTransformation transformer = null)
{
try
{
var listofpoints = new List <List <GeoCoordinate> >();
// only take the first (outer) polygon
var subgeom = geom.GetGeometryN(0);
var numpoints = subgeom.NumPoints;
var points = new List <GeoCoordinate>();
for (var i = 0; i < numpoints; i++)
{
var coord = subgeom.Coordinates[i];
if (transformer != null)
{
coord = coord.Transform(transformer);
}
points.Add(new GeoCoordinate(coord.Y, coord.X));
}
var close = points[0].Longitude != points[numpoints - 1].Longitude ||
points[0].Latitude != points[numpoints - 1].Latitude
? 1 : 0;
// add 1st point as last to complete the polygon
if (close == 1)
{
points.Add(new GeoCoordinate(points[0].Latitude, points[0].Longitude));
}
listofpoints.Add(points);
PolygonGeoShape result = new PolygonGeoShape(listofpoints);
return(result);
}
catch (Exception ex)
{
throw new InvalidOperationException("Error", ex);
}
}
public void GeoShapePolygon()
{
var polygon = new PolygonGeoShape
{
Coordinates = new[] {
new[] { new[] { 100.0, 0.0 }, new[] { 101.0, 0.0 }, new[] { 101.0, 1.0 }, new[] { 100.0, 1.0 }, new [] { 100.0, 0.0 } },
new[] { new[] { 100.2, 0.2}, new[] { 100.8, 0.2 }, new[] { 100.8, 0.8}, new[] { 100.2, 0.8 }, new [] { 100.2, 0.2} }
}
};
var s = new SearchDescriptor<ElasticsearchProject>()
.From(0)
.Size(10)
.Query(q => q
.GeoShapePolygon(qs => qs
.OnField(p => p.MyGeoShape)
.Coordinates(polygon.Coordinates)
)
);
this.JsonEquals(s, MethodInfo.GetCurrentMethod());
}
public void GeoShapePolygon()
{
var polygon = new PolygonGeoShape
{
Coordinates = new[] {
new[] { new[] { 100.0, 0.0 }, new[] { 101.0, 0.0 }, new[] { 101.0, 1.0 }, new[] { 100.0, 1.0 }, new [] { 100.0, 0.0 } },
new[] { new[] { 100.2, 0.2 }, new[] { 100.8, 0.2 }, new[] { 100.8, 0.8 }, new[] { 100.2, 0.8 }, new [] { 100.2, 0.2 } }
}
};
var s = new SearchDescriptor <ElasticsearchProject>()
.From(0)
.Size(10)
.Query(q => q
.GeoShapePolygon(qs => qs
.OnField(p => p.MyGeoShape)
.Coordinates(polygon.Coordinates)
)
);
this.JsonEquals(s, MethodInfo.GetCurrentMethod());
}
public void WritePolygon()
{
var polygon = new PolygonGeoShape(new[]
{
new[]
{
new GeoCoordinate(2, 102),
new GeoCoordinate(2, 103),
new GeoCoordinate(3, 103),
new GeoCoordinate(3, 102),
},
new[]
{
new GeoCoordinate(0, 100),
new GeoCoordinate(0, 101),
new GeoCoordinate(1, 101),
new GeoCoordinate(1, 100),
}
});
var wkt = GeoWKTWriter.Write(polygon);
wkt.Should().Be("POLYGON ((102 2, 103 2, 103 3, 102 3), (100 0, 101 0, 101 1, 100 1))");
}
