private static List <string> MultiPolygonObjectToEsriJson(MultiPolygonGeoJson multi)
{
List <string> esriJsonList = new List <string>();
foreach (List <List <List <double> > > poly in multi.coordinates)
{
// Convert the individual polygons within multipolygon
var newPoly = new PolygonGeoJson {
type = "Polygon", coordinates = poly
};
// check coordinates to make sure they match ESRI requirement for outer vs inner rings
var convertedPoly = ConvertGeoJsonCoordsToEsriCoords(newPoly);
var esriPolygonJsonObject = new EsriPolygonJsonObject
{
spatialReference = new SpatialReference(4326),
rings = convertedPoly.coordinates
};
var esriJson = JsonConvert.SerializeObject(esriPolygonJsonObject);
if (!string.IsNullOrEmpty(esriJson))
{
esriJsonList.Add(esriJson);
}
}
return(esriJsonList);
}
private static string GeojsonToEsriJson(PolygonGeoJson poly)
{
var convertedPoly = ConvertGeoJsonCoordsToEsriCoords(poly);
var esriJsonObject = new EsriPolygonJsonObject
{
spatialReference = new SpatialReference(4326),
rings = convertedPoly.coordinates
};
var outputString = JsonConvert.SerializeObject(esriJsonObject);
return(outputString);
}
private static PolygonGeoJson ConvertGeoJsonCoordsToEsriCoords(PolygonGeoJson poly)
{
for (int i = 0; i <= poly.coordinates.Count - 1; i++)
{
// if the outer polygon isn't clock wise reverse the order of the coordinates.
if (i == 0 && !IsClockwise(poly.coordinates[i]))
{
poly.coordinates[i].Reverse();
continue;
}
// if the holes in the polygon are not counter-clockwise then revese the order.
if (i > 0 && IsClockwise(poly.coordinates[i]))
{
poly.coordinates[i].Reverse();
}
}
return(poly);
}
private static PolygonGeoJson ConvertGeoJsonCoordsToEsriCoords(PolygonGeoJson poly)
{
for (int i = 0; i <= poly.coordinates.Count - 1; i ++)
{
// if the outer polygon isn't clock wise reverse the order of the coordinates.
if (i == 0 && !IsClockwise(poly.coordinates[i]))
{
poly.coordinates[i].Reverse();
continue;
}
// if the holes in the polygon are not counter-clockwise then revese the order.
if (i > 0 && IsClockwise(poly.coordinates[i]))
{
poly.coordinates[i].Reverse();
}
}
return poly;
}
private static List<string> MultiPolygonObjectToEsriJson(MultiPolygonGeoJson multi)
{
List<string> esriJsonList = new List<string>();
foreach (List<List<List<double>>> poly in multi.coordinates)
{
// Convert the individual polygons within multipolygon
var newPoly = new PolygonGeoJson { type = "Polygon", coordinates = poly };
// check coordinates to make sure they match ESRI requirement for outer vs inner rings
var convertedPoly = ConvertGeoJsonCoordsToEsriCoords(newPoly);
var esriPolygonJsonObject = new EsriPolygonJsonObject
{
spatialReference = new SpatialReference(4326),
rings = convertedPoly.coordinates
};
var esriJson = JsonConvert.SerializeObject(esriPolygonJsonObject);
if (!string.IsNullOrEmpty(esriJson))
{
esriJsonList.Add(esriJson);
}
}
return esriJsonList;
}
private static string GeojsonToEsriJson(PolygonGeoJson poly)
{
var convertedPoly = ConvertGeoJsonCoordsToEsriCoords(poly);
var esriJsonObject = new EsriPolygonJsonObject
{
spatialReference = new SpatialReference(4326),
rings = convertedPoly.coordinates
};
var outputString = JsonConvert.SerializeObject(esriJsonObject);
return outputString;
}
