// INDEXING
public static ulong GeoToH3(double latitude, double longitude, int resolution)
{
var coord = new H3GeoCoord {
lat = DegToRad(latitude), lon = DegToRad(longitude)
};
return(geoToH3(ref coord, resolution));
}
public static (double latitude, double longitude) GetCenter(ulong index)
{
H3GeoCoord geoCoord = new H3GeoCoord();
h3ToGeo(index, ref geoCoord);
if (geoCoord.lon > 180)
{
geoCoord.lon -= 360;
}
GeoCoord coords = new GeoCoord(geoCoord);
return(coords.latitude, coords.longitude);
}
private static extern void h3ToGeo(ulong h3, ref H3GeoCoord g);
private static extern ulong geoToH3(ref H3GeoCoord g, int res);
public GeoCoord(H3GeoCoord coord)
{
latitude = H3Standard.H3.RadToDeg(coord.lat);
longitude = H3Standard.H3.RadToDeg(coord.lon);
}
