/// <summary>
/// Build a GeoJson Point from latitude and longitude.
/// </summary>
/// <returns>GeoJson Point</returns>
public static DurMap.Site.Models.GeoJson.Point GeoJsonPointFromLocation(double latitude, double longitude)
{
var point = new DurMap.Site.Models.GeoJson.Point()
{
coordinates = new double[2]
};
//we can safely round the lat/long to 5 decimal places as thats 1.11m at equator, reduces data transfered to client
point.coordinates[0] = Math.Round(longitude, 5);
point.coordinates[1] = Math.Round(latitude, 5);
return(point);
}
/// <summary>
/// Build an SqlGeography Point from a GeoJson Point.
/// </summary>
/// <param name="point">GeoJson Point</param>
/// <returns>SqlGeography Point</returns>
public static SqlGeography GeographyFromGeoJsonPoint(DurMap.Site.Models.GeoJson.Point point)
{
var geob = new SqlGeographyBuilder();
geob.SetSrid(SRID);
geob.BeginGeography(OpenGisGeographyType.Point);
geob.BeginFigure(point.coordinates[1], point.coordinates[0]);
geob.EndFigure();
geob.EndGeography();
var geog = geob.ConstructedGeography;
//Trace.WriteLine(geog.AsGml().Value);
return(geog);
}
