public static double ConvertElevation(double elevation, UomElevation to, UomElevation from)
{
if (to != from)
{
return((to == UomElevation.Meters) ? 1200d / 3937d : 3937d / 1200d);
}
return(elevation);
}
public static string ToStringAbv(this UomElevation uomElevation)
{
switch (uomElevation)
{
case UomElevation.Feet: return("Ft");
case UomElevation.Meters: return("M");
}
return(String.Empty);
}
public override bool Parse(String nmea)
{
if (base.Parse(nmea))
{
IsValid = false;
String[] tokens = nmea.Substring(0, nmea.IndexOf("*")).Split(',');
if (tokens.Length > 14 && tokens[1].Length > 0)
{
try
{
FixTime = DateTime.ParseExact(tokens[1], GGATimeFormatters, CultureInfo.InvariantCulture, DateTimeStyles.None);
Latitude = Latitude.fromDecimalDMS(
Double.Parse(tokens[2]),
GeoSpatialTypes.ParseNorthSouth(tokens[3])
);
Longitude = Longitude.fromDecimalDMS(
Double.Parse(tokens[4]),
GeoSpatialTypes.ParseEastWest(tokens[5])
);
FixQuality = GpsFixTypeExtensions.Parse(tokens[6]);
TrackedSatellitesCount = Int32.Parse(tokens[7]);
HorizDilution = Double.Parse(tokens[8]);
Elevation = Double.Parse(tokens[9]);
UomElevation = GeoSpatialTypes.ParseUomElevation(tokens[10]);
GeoidHeight = Double.Parse(tokens[11]);
GeoUom = GeoSpatialTypes.ParseUomElevation(tokens[12]);
IsValid = true;
}
catch
{
//
}
}
}
return(IsValid);
}
public static GeoPosition getMidPioint(List <Double> lats, List <Double> lons, List <Double> elevations, UomElevation uomElevation)
{
if (lats == null || lats.Count < 1)
{
throw new Exception("No positions to average.");
}
if (lats.Count != lons.Count && lats.Count != elevations.Count)
{
throw new Exception("Array size Mismatch");
}
Double x, y, z, q;
x = y = z = q = 0.0;
int size = lats.Count;
Double lat, lon;
for (int i = 0; i < size; i++)
{
lat = lats[i] * Math.PI / 180.0;
lon = lons[i] * Math.PI / 180.0;
x += Math.Cos(lat) * Math.Cos(lon);
y += Math.Cos(lat) * Math.Sin(lon);
q += Math.Sin(lat);
z += elevations[i];
}
x /= size;
y /= size;
z /= size;
q /= size;
lon = Math.Atan2(y, x);
Double hyp = Math.Sqrt(Math.Pow(x, 2) + Math.Pow(y, 2));
lat = Math.Atan2(q, hyp);
return(new GeoPosition(lat * 180.0 / Math.PI, lon * 180.0 / Math.PI, z, uomElevation));
}
public void SetAndConvertElevation(UomElevation uomElevation)
{
Elevation = GeoTools.ConvertElevation(Elevation, uomElevation, UomElevation);
UomElevation = uomElevation;
}
public void SetUomElevation(UomElevation uomElevation)
{
UomElevation = uomElevation;
}
public GeoPosition(Latitude latitude, Longitude longitude, double elevation, UomElevation uomElevation)
: base(latitude, longitude)
{
this.Elevation = elevation;
this.UomElevation = uomElevation;
}
public GeoPosition(double latitude, NorthSouth latDir, double longitude, EastWest lonDir, double elevation, UomElevation uomElevation)
: base(latitude, latDir, longitude, lonDir)
{
this.Elevation = elevation;
this.UomElevation = uomElevation;
}
public GeoPosition(GeoPosition position) : base(position)
{
Elevation = position.Elevation;
UomElevation = position.UomElevation;
}
public GeoPosition(Position position, double elevation, UomElevation uomElevation) : base(position)
{
this.Elevation = elevation;
this.UomElevation = uomElevation;
}
