/// <summary>
/// Converts a 'Maidenhead Locator' to geographical point (latitude and longitude, in degrees).
/// </summary>
/// <param name="maidenheadLocator">The 'Maidenhead Locator'.</param>
/// <param name="positionInRectangle">The position of the geographical coordinates in the locator.</param>
/// <returns>The geographical point as LatLon.GPoint.</returns>
/// <exception cref="ArgumentException">
/// If the length of the locator text is null or not an even number.
/// If the locator text contains invalid characters.
/// </exception>
/// <summary>
public static LatLon.GPoint GPointFromLoc(string maidenheadLocator, PositionInRectangle positionInRectangle = PositionInRectangle.MiddleMiddle)
{
double lat, lon;
LatLonFromLoc(maidenheadLocator, positionInRectangle, out lat, out lon);
return(new LatLon.GPoint(lat, lon));
}
/// <summary>
/// Calculates the azimuth to a 'Maidenhead Locator'.
/// </summary>
/// <param name="maidenheadLocator">The 'Maidenhead Locator'.</param>
/// <param name="positionInRectangle">>The position of the geographical coordinates in the locator.</param>
/// <returns>The azimuth in degrees.</returns>
/// <exception cref="ArgumentException">
/// If the length of the locator text is null or not an even number.
/// If the locator text contains invalid characters.
/// </exception>
public double GetAzimuth(string maidenheadLocator, PositionInRectangle positionInRectangle)
{
var geographicalPoint = new GeographicalPoint(maidenheadLocator, positionInRectangle);
double result = GetAzimuth(geographicalPoint);
return(result);
}
/// <summary>
/// Calculates the distance to a 'Maidenhead Locator'.
/// </summary>
/// <param name="maidenheadLocator">The 'Maidenhead Locator'.</param>
/// <param name="positionInRectangle">>The position of the geographical coordinates in the locator.</param>
/// <returns>The distance in km.</returns>
/// <exception cref="ArgumentException">
/// If the length of the locator text is null or not an even number.
/// If the locator text contains invalid characters.
/// </exception>
public double GetDistance(string maidenheadLocator, PositionInRectangle positionInRectangle)
{
GeographicalPoint geographicalPoint = new GeographicalPoint(maidenheadLocator, positionInRectangle);
double result = GetDistance(geographicalPoint);
return(result);
}
/// <summary>
/// Creates a new instance, based on a 'Maidenhead Locator'.
/// </summary>
/// <param name="maidenheadLocator">The 'Maidenhead Locator'.</param>
/// <param name="positionInRectangle">The position of the geographical coordinates in the locator.</param>
/// <exception cref="ArgumentException">
/// If the length of the locator text is null or not an even number.
/// If the locator text contains invalid characters.
/// </exception>
public GeographicalPoint(string maidenheadLocator, PositionInRectangle positionInRectangle)
: this()
{
double latitude;
double longitude;
MaidenheadLocator.LatLonFromLoc(maidenheadLocator, positionInRectangle, out latitude, out longitude);
Latitude = latitude;
Longitude = longitude;
}
/// <summary>
/// Calculates the azimuth from a 'Maidenhead Locator' 1 to a 'Maidenhead Locator' 2.
/// </summary>
/// <param name="maidenheadLocator1">The 'Maidenhead Locator' 1.</param>
/// <param name="positionInRectangle1">The position of the geographical coordinates in the locator 1.</param>
/// <param name="maidenheadLocator2">The 'Maidenhead Locator' 2.</param>
/// <param name="positionInRectangle2">>The position of the geographical coordinates in the locator 2.</param>
/// <returns>The azimuth in degrees.</returns>
/// <exception cref="ArgumentException">
/// If the length of any locator text is null or not an even number.
/// If any locator text contains invalid characters.
/// </exception>
public static double GetAzimuth(
string maidenheadLocator1, PositionInRectangle positionInRectangle1,
string maidenheadLocator2, PositionInRectangle positionInRectangle2
)
{
var geographicalPoint1 = new GeographicalPoint(maidenheadLocator1, positionInRectangle1);
var geographicalPoint2 = new GeographicalPoint(maidenheadLocator2, positionInRectangle2);
double result = GetAzimuth(geographicalPoint1, geographicalPoint2);
return(result);
}
/// <summary>
/// Gets a waypoint projection, based on a 'Maidenhead Locator',
/// a azimuth and a distance, respectively.
/// </summary>
/// <param name="maidenheadLocator">The 'Maidenhead Locator'.</param>
/// <param name="positionInRectangle">The position of the geographical coordinates in the locator.</param>
/// <param name="azimuth">The azimuth in degrees [0...360).</param>
/// <param name="distance">The distance in km.</param>
/// <returns>The waypoint projection as a <see cref="GeographicalPoint" /> instance.</returns>
/// <exception cref="ArgumentException">
/// If the length of the locator text is null or not an even number.
/// If the locator text contains invalid characters.
/// </exception>
/// <exception cref="ArgumentException">If the azimuth exceeds its allowed interval.</exception>
public static GeographicalPoint GetWaypointProjection(
string maidenheadLocator, PositionInRectangle positionInRectangle,
double azimuth, double distance
)
{
var geographicalPoint = new GeographicalPoint(maidenheadLocator, positionInRectangle);
var result = GetWaypointProjection(
geographicalPoint,
azimuth, distance
);
return(result);
}
/// <summary>
/// Shifts geographical coordinates within a rectangle.
/// </summary>
/// <param name="latitude">The geographical latitude.</param>
/// <param name="longitude">The geographical longitude.</param>
/// <param name="positionInRectangle">The desired <see cref="PositionInRectangle" /> value.</param>
/// <param name="height">The rectangle height.</param>
/// <param name="width">The rectangle width.</param>
internal static void ShiftPositionInRectangle(
ref double latitude, ref double longitude,
PositionInRectangle positionInRectangle,
double height, double width
)
{
switch (positionInRectangle)
{
case PositionInRectangle.TopLeft:
case PositionInRectangle.TopMiddle:
case PositionInRectangle.TopRight:
latitude += height;
break;
}
switch (positionInRectangle)
{
case PositionInRectangle.MiddleLeft:
case PositionInRectangle.MiddleMiddle:
case PositionInRectangle.MiddleRight:
latitude += height / 2;
break;
}
switch (positionInRectangle)
{
case PositionInRectangle.TopRight:
case PositionInRectangle.MiddleRight:
case PositionInRectangle.BottomRight:
longitude += width;
break;
}
switch (positionInRectangle)
{
case PositionInRectangle.TopMiddle:
case PositionInRectangle.MiddleMiddle:
case PositionInRectangle.BottomMiddle:
longitude += width / 2;
break;
}
}
/// <summary>
/// Converts a 'Maidenhead Locator' to geographical coordinates (latitude and longitude, in degrees).
/// </summary>
/// <param name="maidenheadLocator">The 'Maidenhead Locator'.</param>
/// <param name="positionInRectangle">The position of the geographical coordinates in the locator.</param>
/// <param name="latitude">The geographical latitude.</param>
/// <param name="longitude">The geographical longitude.</param>
/// <exception cref="ArgumentException">
/// If the length of the locator text is null or not an even number.
/// If the locator text contains invalid characters.
/// </exception>
public static void LatLonFromLoc(string maidenheadLocator, PositionInRectangle positionInRectangle, out double latitude, out double longitude)
{
//Check arguments
{
if (
string.IsNullOrEmpty(maidenheadLocator) ||
maidenheadLocator.Length % 2 != 0
)
{
throw new ArgumentException("Length of locator text is null or not an even number.", "maidenheadLocator");
}
}
//Corrections
{
//Upper cases
maidenheadLocator = maidenheadLocator.ToUpper();
}
//Work
{
int precision = maidenheadLocator.Length / 2;
latitude = GeographicalPoint.LowerLatitudeLimit;
longitude = GeographicalPoint.LowerLongitudeLimit;
//Zone size for step "0"
double height;
double width;
InitializeZoneSize(out height, out width);
for (int step = 1; step <= precision; step++)
{
int zones;
char firstCharacter;
RetrieveStepValues(step, false, out zones, out firstCharacter);
//Zone size of current step
height /= zones;
width /= zones;
//Retrieve precision specific geographical coordinates
double longitudeStep = 0;
double latitudeStep = 0;
{
bool error = false;
int position = -1;
if (!error)
{
//Longitude
position = step * 2 - 2;
char locatorCharacter = maidenheadLocator[position];
int zone = (int)(locatorCharacter - firstCharacter);
if (zone >= 0 && zone < zones)
{
longitudeStep = zone * width;
}
else
{
error = true;
}
}
if (!error)
{
//Latitude
position = step * 2 - 1;
char locatorCharacter = maidenheadLocator[position];
int zone = (int)(locatorCharacter - firstCharacter);
if (zone >= 0 && zone < zones)
{
latitudeStep = zone * height;
}
else
{
error = true;
}
}
if (error)
{
throw new ArgumentException("Locator text contains an invalid character at position " + (position + 1) + " (Current precision step is " + step + ").", "maidenheadLocator");
}
}
longitude += longitudeStep;
latitude += latitudeStep;
}
//Corrections according argument positionInRectangle
GeographicalPoint.ShiftPositionInRectangle(ref latitude, ref longitude, positionInRectangle, height, width);
}
}
/// <summary>
/// Converts a 'Maidenhead Locator' to geographical coordinates (latitude and longitude, in degrees).
/// </summary>
/// <param name="maidenheadLocator">The 'Maidenhead Locator'.</param>
/// <param name="positionInRectangle">The position of the geographical coordinates in the locator.</param>
/// <param name="latitude">The geographical latitude.</param>
/// <param name="longitude">The geographical longitude.</param>
/// <exception cref="ArgumentException">
/// If the length of the locator text is null or not an even number.
/// If the locator text contains invalid characters.
/// </exception>
public static void GeographicalCoordinatesByMaidenheadLocator(String maidenheadLocator, PositionInRectangle positionInRectangle, out Double latitude, out Double longitude)
{
//Check arguments
if ( String.IsNullOrEmpty(maidenheadLocator) || maidenheadLocator.Length % 2 != 0 )
{
throw new ArgumentException("Length of locator text is null or not an even number.", "maidenheadLocator");
}
//Corrections
maidenheadLocator = maidenheadLocator.ToUpper();
//Work
{
Int32 precisionValue = maidenheadLocator.Length / 2;
latitude = _LowerLatitudeLimit;
longitude = _LowerLongitudeLimit;
//Zone size for step "0"
Double height;
Double width;
InitializeZoneSize(out height, out width);
for ( int step = 1 ; step <= precisionValue ; step++ )
{
Int32 zones;
char firstCharacter;
RetrieveStepValues(step, false, out zones, out firstCharacter);
//Zone size of current step
height /= zones;
width /= zones;
//Retrieve precision specific geographical coordinates
Double longitudeStep = 0;
Double latitudeStep = 0;
{
Boolean error = false;
Int32 position = -1;
if ( !error )
{
//Longitude
position = step * 2 - 2;
char locatorCharacter = maidenheadLocator[position];
Int32 zone = (Int32)(locatorCharacter - firstCharacter);
if ( zone >= 0 && zone < zones )
{
longitudeStep = zone * width;
}
else
{
error = true;
}
}
if ( !error )
{
//Latitude
position = step * 2 - 1;
char locatorCharacter = maidenheadLocator[position];
Int32 zone = (Int32)(locatorCharacter - firstCharacter);
if ( zone >= 0 && zone < zones )
{
latitudeStep = zone * height;
}
else
{
error = true;
}
}
if ( error )
{
throw new ArgumentException("Locator text contains an invalid character at position " + (position + 1) + " (Current precision step is " + step + ").", "maidenheadLocator");
}
}
longitude += longitudeStep;
latitude += latitudeStep;
}
//Corrections according argument positionInRectangle
GeoPoint.ShiftPositionInRectangle(ref latitude, ref longitude, positionInRectangle, height, width);
}
}
