public static int GetZoneFromLongitude(Projection projection, double longitude)
{
double degrees_from_first = longitude - projection.first_lon;
double zone = degrees_from_first / projection.zone_width;
int zone_number = (int)Math.Floor(zone) + projection.first_zone;
return zone_number;
}
public Redfearn(Ellipsoid ellipsoid, Projection projection, int zone)
{
this.ellipsoid = ellipsoid;
this.projection = projection;
this.zone = zone;
double lon_zero_degrees = projection.first_lon +
projection.zone_width / 2.0 + projection.zone_width *
(zone - projection.first_zone);
lon_zero = Math.PI * lon_zero_degrees / 180.0;
PrecalculateMeridianDistance();
}
