public void FeatureSerialization()
{
var coordinates = new[]
{
new List<IPosition>
{
new GeographicPosition(52.370725881211314, 4.889259338378906),
new GeographicPosition(52.3711451105601, 4.895267486572266),
new GeographicPosition(52.36931095278263, 4.892091751098633),
new GeographicPosition(52.370725881211314, 4.889259338378906)
},
new List<IPosition>
{
new GeographicPosition(52.370725881211314, 4.989259338378906),
new GeographicPosition(52.3711451105601, 4.995267486572266),
new GeographicPosition(52.36931095278263, 4.992091751098633),
new GeographicPosition(52.370725881211314, 4.989259338378906)
},
};
var settings = new JsonSerializerSettings { ContractResolver = new CamelCasePropertyNamesContractResolver() };
IGeometryObject geometry;
geometry = new LineString(coordinates[0]);
JsonAssert.AssertCoordinates(JsonConvert.SerializeObject(new Feature.Feature(geometry), DefaultJsonSerializerSettings), 1, coordinates[0]);
geometry = new Point(coordinates[0][0]);
JsonAssert.AssertCoordinates(JsonConvert.SerializeObject(new Feature.Feature(geometry), DefaultJsonSerializerSettings), 0, coordinates[0].Take(1).ToArray());
geometry = new MultiLineString(coordinates.Select(ca => new LineString(ca)).ToList());
JsonAssert.AssertCoordinates(JsonConvert.SerializeObject(new Feature.Feature(geometry), DefaultJsonSerializerSettings), 2, coordinates);
geometry = new Polygon(coordinates.Select(ca => new LineString(ca)).ToList());
JsonAssert.AssertCoordinates(JsonConvert.SerializeObject(new Feature.Feature(geometry), DefaultJsonSerializerSettings), 2, coordinates);
}
public static GeoJSON.Net.Geometry.Point Point2JG(PointD point)
{
JGeometry.GeographicPosition position = new JGeometry.GeographicPosition(point.Y, point.X);
JGeometry.IPosition ip = position;
JGeometry.Point jPoint = new JGeometry.Point(position);
return(jPoint);
}
public IActionResult GetPoint(int citiId)
{
var city = _dbContext.Cities.FirstOrDefault(c => c.CityID == citiId);
if (city == null)
{
return(Json($"查询不到id为{citiId}的城市"));
}
//理解:Geometry/geojson/WKT 三者可以互转
//Geometry to GeoJSON
//GeoJSON:http://geojson.org/
//GeoJSON.Net:
//https://github.com/GeoJSON-Net/GeoJSON.Net
//https://github.com/GeoJSON-Net/GeoJSON.Net/tree/master/src/GeoJSON.Net.Tests/Geometry
//原理是先把Geometry对象转成geojson对象，然后再序列化
Position position = new Position(city.Location.X, city.Location.Y);
GeoJSON.Net.Geometry.Point point = new GeoJSON.Net.Geometry.Point(position);
var s = JsonConvert.SerializeObject(point);
//Geometry to wkt
//http://nettopologysuite.github.io/html/class_net_topology_suite_1_1_i_o_1_1_w_k_t_reader.html
var s2 = NetTopologySuite.IO.WKTWriter.ToPoint(city.Location.Coordinate);
return(Json($"GeoJSON结果:{s},WKT结果:{s2}"));
}
/// <summary>
/// Prints GEOJson dump of Sites
/// </summary>
/// <param name="requiredProperties">list of properties to include (if not found in siteproperties an empty string will be inserted)</param>
public void Execute(string[] requiredProperties, string siteType)
{
Console.Write("Content-Type: application/json\n\n");
var features = new List<Feature>();
FeatureCollection fc = new FeatureCollection(features);
var filter = "";
if( siteType != "")
filter = "type = '"+siteType+"'";
var sites = db.GetSiteCatalog(filter:filter);
var siteProp = new TimeSeriesDatabaseDataSet.sitepropertiesDataTable(db);
int id = 0;
foreach (var s in sites)
{
try
{
var pos = new GeographicPosition(s.latitude, s.longitude);
var pt = new GeoJSON.Net.Geometry.Point(pos);
var props = siteProp.GetDictionary(s.siteid);
for (int i = 0; i < requiredProperties.Length; i++)
{
if (requiredProperties[i].Trim() == "")
continue;
if (!props.ContainsKey(requiredProperties[i]))
props.Add(requiredProperties[i], "");
}
props.Add("siteid", s.siteid);
props.Add("title", s.description);
props.Add("state", s.state);
props.Add("type", s.type);
props.Add("region", s.responsibility.Trim());
props.Add("install", s.install);
id++;
var feature = new Feature(pt, props, id.ToString());
fc.Features.Add(feature);
}
catch (Exception error)
{
Console.WriteLine("Error at site:"+s);
Console.WriteLine(error.Message);
}
}
var settings = new JsonSerializerSettings();
settings.NullValueHandling = NullValueHandling.Ignore;
var json = Newtonsoft.Json.JsonConvert.SerializeObject(fc,
Newtonsoft.Json.Formatting.Indented,settings);
Console.WriteLine(json);
//File.WriteAllText(@"c:\temp\test.json", json);
}
/// <summary>
/// Prints GEOJson dump of Sites
/// </summary>
/// <param name="requiredProperties">list of properties to include (if not found in siteproperties an empty string will be inserted)</param>
/// <param name="propertyFilter">two part filter in property table i.e. 'program:agrimet'</param>
public void Execute(string[] requiredProperties, string propertyFilter = "")
{
Console.Write("Content-Type: application/json\n\n");
var features = new List <Feature>();
FeatureCollection fc = new FeatureCollection(features);
var sites = db.GetSiteCatalog(propertyFilter: propertyFilter);
var siteProp = new TimeSeriesDatabaseDataSet.sitepropertiesDataTable(db);
int id = 0;
foreach (var s in sites)
{
var pos = new GeographicPosition(s.latitude, s.longitude);
var pt = new GeoJSON.Net.Geometry.Point(pos);
var props = siteProp.GetDictionary(s.siteid);
for (int i = 0; i < requiredProperties.Length; i++)
{
if (requiredProperties[i].Trim() == "")
{
continue;
}
if (!props.ContainsKey(requiredProperties[i]))
{
props.Add(requiredProperties[i], "");
}
}
props.Add("siteid", s.siteid);
props.Add("title", s.description);
props.Add("state", s.state);
props.Add("type", s.type);
if (!props.ContainsKey("region"))
{
props.Add("region", s.agency_region);
}
props.Add("install", s.install);
id++;
var feature = new Feature(pt, props, id.ToString());
fc.Features.Add(feature);
}
var settings = new JsonSerializerSettings();
settings.NullValueHandling = NullValueHandling.Ignore;
var json = Newtonsoft.Json.JsonConvert.SerializeObject(fc,
Newtonsoft.Json.Formatting.Indented, settings);
Console.WriteLine(json);
//File.WriteAllText(@"c:\temp\test.json", json);
}
private static void AddPointCoordinates(Point point, StringBuilder sb)
{
var coord = point?.Coordinates as GeographicPosition;
if (coord != null)
{
sb.Append("(" + coord.Longitude + " " + coord.Latitude + ")");
}
}
public void PointFeatureSerialization()
{
var point = new Point(new GeographicPosition(45.79012, 15.94107));
var featureProperties = new Dictionary<string, object> { { "Name", "Foo" } };
var model = new Feature.Feature(point, featureProperties);
var serializedData = JsonConvert.SerializeObject(model);
Assert.IsFalse(serializedData.Contains("longitude"));
}
public void PointFeatureSerialization()
{
var point = new GeoJSON.Net.Geometry.Point(new GeoJSON.Net.Geometry.GeographicPosition(45.79012, 15.94107));
var featureProperties = new Dictionary<string, object> { {"Name", "Foo"} };
var model = new GeoJSON.Net.Feature.Feature(point, featureProperties);
var serializedData = JsonConvert.SerializeObject(model, Formatting.Indented, new JsonSerializerSettings { ContractResolver = new CamelCasePropertyNamesContractResolver(), NullValueHandling = NullValueHandling.Ignore });
Assert.IsFalse(serializedData.Contains("longitude"));
}
public void Can_Serialize_With_Lat_Lon_Alt()
{
var point = new Point(new GeographicPosition(53.2455662, 90.65464646, 200.4567));
var expectedJson = "{\"coordinates\":[90.65464646,53.2455662,200.4567],\"type\":\"Point\"}";
var actualJson = JsonConvert.SerializeObject(point);
JsonAssert.AreEqual(expectedJson, actualJson);
}
public void Can_Deserialize_With_Lat_Lon()
{
var json = "{\"coordinates\":[90.65464646,53.2455662],\"type\":\"Point\"}";
var expectedPoint = new Point(new GeographicPosition(53.2455662, 90.65464646));
var actualPoint = JsonConvert.DeserializeObject<Point>(json);
Assert.AreEqual(expectedPoint, actualPoint);
}
/*
* Set origin point of the buliding to geojson
*/
public static Feature setOriginPointToGeoJSON(double latitude, double longitude, double altitude)
{
var properties = new Dictionary <String, object>();
properties.Add("Origin Point", "OriginPoint");
Point OriginCoordinate = new Point(new GeographicPosition(latitude, longitude, altitude));
var feature = new Feature(OriginCoordinate, properties);
return(feature);
}
public void PointFeatureSerialization()
{
var point = new GeoJSON.Net.Geometry.Point(new GeoJSON.Net.Geometry.GeographicPosition(45.79012, 15.94107));
var featureProperties = new Dictionary <string, object> {
{ "Name", "Foo" }
};
var model = new GeoJSON.Net.Feature.Feature(point, featureProperties);
var serializedData = GetSerialized(model);
Assert.IsFalse(serializedData.Contains("longitude"));
}
public void PointFeatureSerialization()
{
var point = new GeoJSON.Net.Geometry.Point(new GeoJSON.Net.Geometry.GeographicPosition(45.79012, 15.94107));
var featureProperties = new Dictionary <string, object> {
{ "Name", "Foo" }
};
var model = new GeoJSON.Net.Feature.Feature(point, featureProperties);
var serializedData = JsonConvert.SerializeObject(model, Formatting.Indented, new JsonSerializerSettings {
ContractResolver = new CamelCasePropertyNamesContractResolver(), NullValueHandling = NullValueHandling.Ignore
});
Assert.IsFalse(serializedData.Contains("longitude"));
}
private static void MapboxAPIUsage()
{
GeoJSON.Net.Geometry.Position mlawa = new GeoJSON.Net.Geometry.Position(53.112128, 20.383661);
var polygon = MapboxAPIHelper.GetIsochroneAsPolygon(mlawa, 10);
GeoJSON.Net.Geometry.Position positionInside = new GeoJSON.Net.Geometry.Position(53.125982, 20.358108);
GeoJSON.Net.Geometry.Point pointInside = new GeoJSON.Net.Geometry.Point(positionInside);
GeoJSON.Net.Geometry.Position positionOutside = new GeoJSON.Net.Geometry.Position(53.155378, 20.363038);
GeoJSON.Net.Geometry.Point pointOutside = new GeoJSON.Net.Geometry.Point(positionOutside);
bool inside = GeometryUtils.CheckIfPointIsInsidePolygon(polygon, pointInside);
bool outside = GeometryUtils.CheckIfPointIsInsidePolygon(polygon, pointOutside);
}
private async Task GetPointData()
{
var city = await _dbContext.Cities.FirstOrDefaultAsync();
//Geometry to geoJSON
Position position = new Position(city.Location.X, city.Location.Y);
GeoJSON.Net.Geometry.Point point = new GeoJSON.Net.Geometry.Point(position);
var s = JsonConvert.SerializeObject(point);
//Geometry to wkt
var s2 = NetTopologySuite.IO.WKTWriter.ToPoint(city.Location.Coordinate);
Console.WriteLine($"GeoJSON结果:{s},WKT结果:{s2}");
}
public void Should_serialize_Enumeration_to_simplified_json()
{
var point = new Point(new GeographicPosition(1, 2))
{
CRS = new NamedCRS(26912.ToString(CultureInfo.InvariantCulture))
};
Assert.That(point.Type, Is.EqualTo(GeoJSONObjectType.Point));
var json = JsonConvert.SerializeObject(point);
Assert.AreEqual(
@"{""coordinates"":[2.0,1.0],""bbox"":null,""type"":""Point"",""crs"":{""type"":""Name"",""properties"":{""name"":""26912""}}}",
json);
}
public void Equals_GetHashCode_Contract()
{
var json = "{\"coordinates\":[90.65464646,53.2455662],\"type\":\"Point\"}";
var expectedPoint = new Point(new GeographicPosition(53.2455662, 90.65464646));
var actualPoint = JsonConvert.DeserializeObject<Point>(json);
Assert.AreEqual(expectedPoint, actualPoint);
Assert.IsTrue(expectedPoint.Equals(actualPoint));
Assert.IsTrue(actualPoint.Equals(expectedPoint));
Assert.AreEqual(expectedPoint.GetHashCode(), actualPoint.GetHashCode());
}
public static Feature Parse(Tile.Feature feature, List<string> keys, List<Tile.Value> values, int x, int y, int z, uint extent, bool convertToGeographicPosition)
{
Feature result = null;
var geom = GeometryParser.ParseGeometry(feature.Geometry, feature.Type);
var id = feature.Id;
var positions= convertToGeographicPosition?
geom.Select(p => p.ToGeographicPosition(x,y,z,extent)).ToList():
geom.Select(p => new GeographicPosition(p.Latitude, p.Longitude)).ToList();
var coordinates = positions.ToList<IPosition>();
if (feature.Type == Tile.GeomType.Polygon)
{
if (coordinates.Count > 3)
{
var polygon = new Polygon(new List<LineString> {new LineString(coordinates)});
result = new Feature(polygon);
}
}
else if (feature.Type == Tile.GeomType.LineString)
{
var ls = new LineString(coordinates);
result = new Feature(ls);
}
else if (feature.Type == Tile.GeomType.Point)
{
var pt = new Point(coordinates[0]);
result = new Feature(pt);
}
if (result != null)
{
result.Id = id.ToString(CultureInfo.InvariantCulture);
var attributes = AttributesParser.Parse(keys, values, feature.Tags);
foreach (var item in attributes)
{
result.Properties.Add(item.Key, item.Value);
}
}
return result;
}
protected override ApiResponseContainer <Feature> Handle(Command request)
{
IGeometryObject geometry = null;
var attributes = new Dictionary <string, object>();
var message = request.Container.Message;
var status = request.Container.Status;
var result = request.Container.Result;
if (result?.Location != null)
{
geometry = new Point(new Position(result.Location.Y, result.Location.X));
attributes = JObject.FromObject(request.Container.Result)
.ToObject <Dictionary <string, object> >();
}
if (geometry == null && attributes.Count < 1)
{
return(new ApiResponseContainer <Feature> {
Status = status,
Message = message
});
}
var feature =
new Feature(geometry,
attributes.Where(x => x.Value != null).ToDictionary(x => x.Key, y => y.Value));
var responseContainer = new ApiResponseContainer <Feature> {
Result = feature,
Status = status,
Message = message
};
return(responseContainer);
}
public IGeometryObject GetGeometry(IGeometry esriGeometry)
{
IGeometryObject geoJsonGeom = null;
string error = string.Format("A Geometry of type {0} cannot be created", Enum.GetName(typeof(esriGeometryType), esriGeometry.GeometryType));
switch (esriGeometry.GeometryType)
{
case esriGeometryType.esriGeometryAny:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryBag:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryBezier3Curve:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryCircularArc:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryEllipticArc:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryEnvelope:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryLine:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryMultiPatch:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryMultipoint:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryNull:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryPath:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryPoint:
//cast to esri obj
IPoint point = esriGeometry as IPoint;
List<double> coords = new List<double> { point.X, point.Y };
//create geojson obj
GeoJSON.Net.Geometry.Point pnt = new GeoJSON.Net.Geometry.Point(coords);
geoJsonGeom = pnt;
break;
case esriGeometryType.esriGeometryPolygon:
IGeometryCollection polygons = esriGeometry as IGeometryCollection;
List<LineString> linearRings = new List<LineString>();
var rings = new List<List<List<double>>>();
var ring = new List<List<double>>();
//todo - how does esri handle polygons with holes
for (int i = 0; i < polygons.GeometryCount; i++)
{
//for each geometry in the polygon create a point collection
var pGeom = polygons.Geometry[i];
var pntCollection = (IPointCollection)pGeom;
//GeoJSON.Net.Geometry.LineString line = new LineString();
for (var a = 0; a < pntCollection.PointCount; a++)
{
//create a list of coordinates for each line
List<double> linePointCoords = new List<double> { pntCollection.Point[a].X, pntCollection.Point[a].Y };
//..and add them to the poly
ring.Add(linePointCoords);
}
rings.Add(ring);
}
//initialise a poly
GeoJSON.Net.Geometry.Polygon poly = new GeoJSON.Net.Geometry.Polygon(rings);
geoJsonGeom = poly;
break;
case esriGeometryType.esriGeometryPolyline:
//cast to esri obj
IGeometryCollection polylines = esriGeometry as IGeometryCollection;
//create geojson obj
GeoJSON.Net.Geometry.LineString polyLine = new LineString();
for (int i = 0; i < polylines.GeometryCount; i++)
{
//for each geometry in the polyline create a point collection
var pGeom = polylines.Geometry[i];
var pntCollection = (IPointCollection)pGeom;
for (var a = 0; a < pntCollection.PointCount; a++)
{
//create a list of coordinates for each line
List<double> linePointCoords = new List<double> { pntCollection.Point[a].X, pntCollection.Point[a].Y };
//..and add them to the line
polyLine.Coordinates.Add(linePointCoords);
}
}
geoJsonGeom = polyLine;
break;
case esriGeometryType.esriGeometryRay:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryRing:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometrySphere:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryTriangleFan:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryTriangleStrip:
throw new ArgumentOutOfRangeException(error);
case esriGeometryType.esriGeometryTriangles:
throw new ArgumentOutOfRangeException(error);
default:
throw new ArgumentOutOfRangeException(error);
}
return geoJsonGeom;
}
private static IGeometryObject GetPointGeometry(List<GeographicPosition> pointList)
{
IGeometryObject geom;
if (pointList.Count == 1)
{
geom = new Point(pointList[0]);
}
else
{
var pnts = pointList.Select(p => new Point(p)).ToList();
geom = new MultiPoint(pnts);
}
return geom;
}
