/// <summary>
/// Converts a GeoJSON FeatureCollection to a list with data polygons.
/// </summary>
/// <param name="featureCollection">The GeoJSON FeatureCollection.</param>
/// <returns>Converted polygons.</returns>
public static List <DataPolygon> ConvertToDataPolygons(FeatureCollection featureCollection)
{
var dataPolygons = new List <DataPolygon>();
if (featureCollection.IsNull())
{
return(dataPolygons);
}
foreach (Feature feature in featureCollection.Features)
{
////if (feature.Type == GeoJSONObjectType.Polygon)
if (feature.Geometry != null && feature.Geometry.GetType() == typeof(ArtDatabanken.GIS.GeoJSON.Net.Geometry.Polygon))
{
ArtDatabanken.GIS.GeoJSON.Net.Geometry.Polygon polygon = (ArtDatabanken.GIS.GeoJSON.Net.Geometry.Polygon)feature.Geometry;
DataPolygon dataPolygon = ConvertToDataPolygon(polygon);
dataPolygons.Add(dataPolygon);
}
else if (feature.Geometry != null && feature.Geometry.GetType() == typeof(ArtDatabanken.GIS.GeoJSON.Net.Geometry.MultiPolygon))
{
ArtDatabanken.GIS.GeoJSON.Net.Geometry.MultiPolygon multiPolygon = (ArtDatabanken.GIS.GeoJSON.Net.Geometry.MultiPolygon)feature.Geometry;
foreach (ArtDatabanken.GIS.GeoJSON.Net.Geometry.Polygon polygon in multiPolygon.Coordinates)
{
DataPolygon dataPolygon = ConvertToDataPolygon(polygon);
dataPolygons.Add(dataPolygon);
}
}
}
return(dataPolygons);
}
/// <summary>
/// Converts a GeoJSON Polygon to a DataPolygon.
/// </summary>
/// <param name="polygon">The GeoJSON polygon.</param>
/// <returns>Converted DataPolygon.</returns>
public static DataPolygon ConvertToDataPolygon(ArtDatabanken.GIS.GeoJSON.Net.Geometry.Polygon polygon)
{
var dataPolygon = new DataPolygon();
dataPolygon.LinearRings = new List <DataLinearRing>();
foreach (ArtDatabanken.GIS.GeoJSON.Net.Geometry.LineString lineString in polygon.Coordinates)
{
var dataLinearRing = new DataLinearRing();
dataLinearRing.Points = new List <DataPoint>();
foreach (GeographicPosition pos in lineString.Coordinates)
{
var dataPoint = new DataPoint(pos.Longitude, pos.Latitude, pos.Altitude);
dataLinearRing.Points.Add(dataPoint);
}
dataPolygon.LinearRings.Add(dataLinearRing);
}
return(dataPolygon);
}
