/// <summary>
/// Calculate the three dimensional geodetic measurement between two positions
/// measured in reference to a specified ellipsoid.
///
/// This calculation is performed by first computing a new ellipsoid by expanding or contracting
/// the reference ellipsoid such that the new ellipsoid passes through the average elevation
/// of the two positions. A geodetic curve across the new ellisoid is calculated. The
/// point-to-point distance is calculated as the hypotenuse of a right triangle where the length
/// of one side is the ellipsoidal distance and the other is the difference in elevation.
/// </summary>
/// <param name="refEllipsoid">reference ellipsoid to use</param>
/// <param name="start">starting position</param>
/// <param name="end">ending position</param>
/// <returns></returns>
public GeodeticMeasurement CalculateGeodeticMeasurement(Ellipsoid refEllipsoid, GlobalPosition start, GlobalPosition end)
{
// get the coordinates
GlobalCoordinates startCoords = start.Coordinates;
GlobalCoordinates endCoords = end.Coordinates;
// calculate elevation differences
double elev1 = start.Elevation;
double elev2 = end.Elevation;
double elev12 = (elev1 + elev2) / 2.0;
// calculate latitude differences
double phi1 = startCoords.Latitude.Radians;
double phi2 = endCoords.Latitude.Radians;
double phi12 = (phi1 + phi2) / 2.0;
// calculate a new ellipsoid to accommodate average elevation
double refA = refEllipsoid.SemiMajorAxis;
double f = refEllipsoid.Flattening;
double a = refA + elev12 * (1.0 + f * Math.Sin(phi12));
Ellipsoid ellipsoid = Ellipsoid.FromAAndF(a, f);
// calculate the curve at the average elevation
GeodeticCurve averageCurve = CalculateGeodeticCurve(ellipsoid, startCoords, endCoords);
// return the measurement
return new GeodeticMeasurement(averageCurve, elev2 - elev1);
}
/// <summary>
/// Calculate the destination and final bearing after traveling a specified
/// distance, and a specified starting bearing, for an initial location.
/// This is the solution to the direct geodetic problem.
/// </summary>
/// <param name="ellipsoid">reference ellipsoid to use</param>
/// <param name="start">starting location</param>
/// <param name="startBearing">starting bearing (degrees)</param>
/// <param name="distance">distance to travel (meters)</param>
/// <param name="endBearing">bearing at destination (degrees)</param>
/// <returns></returns>
public GlobalCoordinates CalculateEndingGlobalCoordinates(Ellipsoid ellipsoid, GlobalCoordinates start, Angle startBearing, double distance, out Angle endBearing)
{
double a = ellipsoid.SemiMajorAxis;
double b = ellipsoid.SemiMinorAxis;
double aSquared = a * a;
double bSquared = b * b;
double f = ellipsoid.Flattening;
double phi1 = start.Latitude.Radians;
double alpha1 = startBearing.Radians;
double cosAlpha1 = Math.Cos(alpha1);
double sinAlpha1 = Math.Sin(alpha1);
double s = distance;
double tanU1 = (1.0 - f) * Math.Tan(phi1);
double cosU1 = 1.0 / Math.Sqrt(1.0 + tanU1 * tanU1);
double sinU1 = tanU1 * cosU1;
// eq. 1
double sigma1 = Math.Atan2(tanU1, cosAlpha1);
// eq. 2
double sinAlpha = cosU1 * sinAlpha1;
double sin2Alpha = sinAlpha * sinAlpha;
double cos2Alpha = 1 - sin2Alpha;
double uSquared = cos2Alpha * (aSquared - bSquared) / bSquared;
// eq. 3
double A = 1 + (uSquared / 16384) * (4096 + uSquared * (-768 + uSquared * (320 - 175 * uSquared)));
// eq. 4
double B = (uSquared / 1024) * (256 + uSquared * (-128 + uSquared * (74 - 47 * uSquared)));
// iterate until there is a negligible change in sigma
double deltaSigma;
double sOverbA = s / (b * A);
double sigma = sOverbA;
double sinSigma;
double prevSigma = sOverbA;
double sigmaM2;
double cosSigmaM2;
double cos2SigmaM2;
for (; ; )
{
// eq. 5
sigmaM2 = 2.0 * sigma1 + sigma;
cosSigmaM2 = Math.Cos(sigmaM2);
cos2SigmaM2 = cosSigmaM2 * cosSigmaM2;
sinSigma = Math.Sin(sigma);
double cosSignma = Math.Cos(sigma);
// eq. 6
deltaSigma = B * sinSigma * (cosSigmaM2 + (B / 4.0) * (cosSignma * (-1 + 2 * cos2SigmaM2)
- (B / 6.0) * cosSigmaM2 * (-3 + 4 * sinSigma * sinSigma) * (-3 + 4 * cos2SigmaM2)));
// eq. 7
sigma = sOverbA + deltaSigma;
// break after converging to tolerance
if (Math.Abs(sigma - prevSigma) < 0.0000000000001) break;
prevSigma = sigma;
}
sigmaM2 = 2.0 * sigma1 + sigma;
cosSigmaM2 = Math.Cos(sigmaM2);
cos2SigmaM2 = cosSigmaM2 * cosSigmaM2;
double cosSigma = Math.Cos(sigma);
sinSigma = Math.Sin(sigma);
// eq. 8
double phi2 = Math.Atan2(sinU1 * cosSigma + cosU1 * sinSigma * cosAlpha1,
(1.0 - f) * Math.Sqrt(sin2Alpha + Math.Pow(sinU1 * sinSigma - cosU1 * cosSigma * cosAlpha1, 2.0)));
// eq. 9
// This fixes the pole crossing defect spotted by Matt Feemster. When a path
// passes a pole and essentially crosses a line of latitude twice - once in
// each direction - the longitude calculation got messed up. Using Atan2
// instead of Atan fixes the defect. The change is in the next 3 lines.
//double tanLambda = sinSigma * sinAlpha1 / (cosU1 * cosSigma - sinU1*sinSigma*cosAlpha1);
//double lambda = Math.Atan(tanLambda);
double lambda = Math.Atan2(sinSigma * sinAlpha1, cosU1 * cosSigma - sinU1 * sinSigma * cosAlpha1);
// eq. 10
double C = (f / 16) * cos2Alpha * (4 + f * (4 - 3 * cos2Alpha));
// eq. 11
double L = lambda - (1 - C) * f * sinAlpha * (sigma + C * sinSigma * (cosSigmaM2 + C * cosSigma * (-1 + 2 * cos2SigmaM2)));
// eq. 12
double alpha2 = Math.Atan2(sinAlpha, -sinU1 * sinSigma + cosU1 * cosSigma * cosAlpha1);
// build result
Angle latitude = new Angle();
Angle longitude = new Angle();
latitude.Radians = phi2;
longitude.Radians = start.Longitude.Radians + L;
endBearing = new Angle();
endBearing.Radians = alpha2;
return new GlobalCoordinates(latitude, longitude);
}
/// <summary>
/// Calculate the destination after traveling a specified distance, and a
/// specified starting bearing, for an initial location. This is the
/// solution to the direct geodetic problem.
/// </summary>
/// <param name="ellipsoid">reference ellipsoid to use</param>
/// <param name="start">starting location</param>
/// <param name="startBearing">starting bearing (degrees)</param>
/// <param name="distance">distance to travel (meters)</param>
/// <returns></returns>
public GlobalCoordinates CalculateEndingGlobalCoordinates(Ellipsoid ellipsoid, GlobalCoordinates start, Angle startBearing, double distance)
{
Angle endBearing = new Angle();
return CalculateEndingGlobalCoordinates(ellipsoid, start, startBearing, distance, out endBearing);
}
/// <summary>
/// Calculate the geodetic curve between two points on a specified reference ellipsoid.
/// This is the solution to the inverse geodetic problem.
/// </summary>
/// <param name="ellipsoid">reference ellipsoid to use</param>
/// <param name="start">starting coordinates</param>
/// <param name="end">ending coordinates </param>
/// <returns></returns>
public GeodeticCurve CalculateGeodeticCurve(Ellipsoid ellipsoid, GlobalCoordinates start, GlobalCoordinates end)
{
//
// All equation numbers refer back to Vincenty's publication:
// See http://www.ngs.noaa.gov/PUBS_LIB/inverse.pdf
//
// get constants
double a = ellipsoid.SemiMajorAxis;
double b = ellipsoid.SemiMinorAxis;
double f = ellipsoid.Flattening;
// get parameters as radians
double phi1 = start.Latitude.Radians;
double lambda1 = start.Longitude.Radians;
double phi2 = end.Latitude.Radians;
double lambda2 = end.Longitude.Radians;
// calculations
double a2 = a * a;
double b2 = b * b;
double a2b2b2 = (a2 - b2) / b2;
double omega = lambda2 - lambda1;
double tanphi1 = Math.Tan(phi1);
double tanU1 = (1.0 - f) * tanphi1;
double U1 = Math.Atan(tanU1);
double sinU1 = Math.Sin(U1);
double cosU1 = Math.Cos(U1);
double tanphi2 = Math.Tan(phi2);
double tanU2 = (1.0 - f) * tanphi2;
double U2 = Math.Atan(tanU2);
double sinU2 = Math.Sin(U2);
double cosU2 = Math.Cos(U2);
double sinU1sinU2 = sinU1 * sinU2;
double cosU1sinU2 = cosU1 * sinU2;
double sinU1cosU2 = sinU1 * cosU2;
double cosU1cosU2 = cosU1 * cosU2;
// eq. 13
double lambda = omega;
// intermediates we'll need to compute 's'
double A = 0.0;
double B = 0.0;
double sigma = 0.0;
double deltasigma = 0.0;
double lambda0;
bool converged = false;
for (int i = 0; i < 20; i++)
{
lambda0 = lambda;
double sinlambda = Math.Sin(lambda);
double coslambda = Math.Cos(lambda);
// eq. 14
double sin2sigma = (cosU2 * sinlambda * cosU2 * sinlambda) + Math.Pow(cosU1sinU2 - sinU1cosU2 * coslambda, 2.0);
double sinsigma = Math.Sqrt(sin2sigma);
// eq. 15
double cossigma = sinU1sinU2 + (cosU1cosU2 * coslambda);
// eq. 16
sigma = Math.Atan2(sinsigma, cossigma);
// eq. 17 Careful! sin2sigma might be almost 0!
double sinalpha = (sin2sigma == 0) ? 0.0 : cosU1cosU2 * sinlambda / sinsigma;
double alpha = Math.Asin(sinalpha);
double cosalpha = Math.Cos(alpha);
double cos2alpha = cosalpha * cosalpha;
// eq. 18 Careful! cos2alpha might be almost 0!
double cos2sigmam = cos2alpha == 0.0 ? 0.0 : cossigma - 2 * sinU1sinU2 / cos2alpha;
double u2 = cos2alpha * a2b2b2;
double cos2sigmam2 = cos2sigmam * cos2sigmam;
// eq. 3
A = 1.0 + u2 / 16384 * (4096 + u2 * (-768 + u2 * (320 - 175 * u2)));
// eq. 4
B = u2 / 1024 * (256 + u2 * (-128 + u2 * (74 - 47 * u2)));
// eq. 6
deltasigma = B * sinsigma * (cos2sigmam + B / 4 * (cossigma * (-1 + 2 * cos2sigmam2) - B / 6 * cos2sigmam * (-3 + 4 * sin2sigma) * (-3 + 4 * cos2sigmam2)));
// eq. 10
double C = f / 16 * cos2alpha * (4 + f * (4 - 3 * cos2alpha));
// eq. 11 (modified)
lambda = omega + (1 - C) * f * sinalpha * (sigma + C * sinsigma * (cos2sigmam + C * cossigma * (-1 + 2 * cos2sigmam2)));
// see how much improvement we got
double change = Math.Abs((lambda - lambda0) / lambda);
if ((i > 1) && (change < 0.0000000000001))
{
converged = true;
break;
}
}
// eq. 19
double s = b * A * (sigma - deltasigma);
Angle alpha1;
Angle alpha2;
// didn't converge? must be N/S
if (!converged)
{
if (phi1 > phi2)
{
alpha1 = Angle.Angle180;
alpha2 = Angle.Zero;
}
else if (phi1 < phi2)
{
alpha1 = Angle.Zero;
alpha2 = Angle.Angle180;
}
else
{
alpha1 = new Angle(Double.NaN);
alpha2 = new Angle(Double.NaN);
}
}
// else, it converged, so do the math
else
{
double radians;
alpha1 = new Angle();
alpha2 = new Angle();
// eq. 20
radians = Math.Atan2(cosU2 * Math.Sin(lambda), (cosU1sinU2 - sinU1cosU2 * Math.Cos(lambda)));
if (radians < 0.0) radians += TwoPi;
alpha1.Radians = radians;
// eq. 21
radians = Math.Atan2(cosU1 * Math.Sin(lambda), (-sinU1cosU2 + cosU1sinU2 * Math.Cos(lambda))) + Math.PI;
if (radians < 0.0) radians += TwoPi;
alpha2.Radians = radians;
}
if (alpha1 >= 360.0) alpha1 -= 360.0;
if (alpha2 >= 360.0) alpha2 -= 360.0;
return new GeodeticCurve(s, alpha1, alpha2);
}
public override void OnRender(Graphics g)
{
Pen MyPen = new Pen(new SolidBrush(LabelAttributes.TargetColor), LabelAttributes.TargetSize);
MyPen.DashStyle = LabelAttributes.TargetStyle;
// Draw AC Symbol
g.DrawRectangle(MyPen, LocalPosition.X - 5, LocalPosition.Y - 5, 10, 10);
AC_SYMB_START_X = LocalPosition.X - 5;
AC_SYMB_START_Y = LocalPosition.Y - 5;
/////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Here handle drawing of Range/Bearing & SEP tool
if (TargetToMonitor != -1)
{
Point StartPosition = new Point(LocalPosition.X, LocalPosition.Y);
Point EndPosition = DynamicDisplayBuilder.GetTargetPositionByIndex(TargetToMonitor);
g.DrawLine(new Pen(Brushes.Yellow, 1), StartPosition, EndPosition);
// select a reference elllipsoid
Ellipsoid reference = Ellipsoid.WGS84;
// instantiate the calculator
GeodeticCalculator geoCalc = new GeodeticCalculator();
GlobalPosition Start = new GlobalPosition(new GlobalCoordinates(this.Position.Lat, this.Position.Lng));
PointLatLng End_LatLng = FormMain.FromLocalToLatLng(EndPosition.X, EndPosition.Y);
GlobalPosition End = new GlobalPosition(new GlobalCoordinates(End_LatLng.Lat, End_LatLng.Lng));
GeodeticMeasurement GM = geoCalc.CalculateGeodeticMeasurement(reference, End, Start);
////////////////////////////////////////////////////////////////////////////////////////////
// Handle SEP Tool
double TRK1_SPD = 0.0, TRK2_SPD = 0.0;
double TRK1_AZ = 0.0, TRK2_AZ = 0.0;
bool Sep_Data_Is_Valid = true;
if (!double.TryParse(CALC_GSPD_STRING, out TRK1_SPD))
{
if (!double.TryParse(DAP_GSPD, out TRK1_SPD))
{
Sep_Data_Is_Valid = false;
}
}
if (!double.TryParse(DynamicDisplayBuilder.GetTarget_CALC_GSPD_ByIndex(TargetToMonitor), out TRK2_SPD))
{
if (!double.TryParse(DynamicDisplayBuilder.GetTarget_DAP_GSPD_ByIndex(TargetToMonitor), out TRK2_SPD))
{
Sep_Data_Is_Valid = false;
}
}
if (!double.TryParse(CALC_HDG_STRING, out TRK1_AZ))
{
if (!double.TryParse(TRK, out TRK1_AZ))
{
if (!double.TryParse(DAP_HDG, out TRK1_AZ))
{
Sep_Data_Is_Valid = false;
}
}
}
if (!double.TryParse(DynamicDisplayBuilder.GetTarget_CALC_HDG_ByIndex(TargetToMonitor), out TRK2_AZ))
{
if (!double.TryParse(DynamicDisplayBuilder.GetTargetTRKByIndex(TargetToMonitor), out TRK2_AZ))
{
if (!double.TryParse(DynamicDisplayBuilder.GetTargetM_HDGByIndex(TargetToMonitor), out TRK2_AZ))
{
Sep_Data_Is_Valid = false;
}
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// If all the necessary data is avilable
// then pass it on to the SEP tool calculator
// and then draw the result
string SepToolActive = "N/A";
if (Sep_Data_Is_Valid)
{
SEP_Tool_Calculator SepTool = new SEP_Tool_Calculator(Start, End, TRK1_SPD, TRK2_SPD, TRK1_AZ, TRK2_AZ, 20);
SEP_Tool_Calculator.OutData Sep_Tool_Data = SepTool.GetResult();
if (Sep_Tool_Data.Is_Converging)
{
g.DrawRectangle(new Pen(Brushes.Yellow, LabelAttributes.TargetSize), Sep_Tool_Data.Track_1_Pos_Min.X - 5, Sep_Tool_Data.Track_1_Pos_Min.Y - 5, 10, 10);
g.DrawRectangle(new Pen(Brushes.Yellow, LabelAttributes.TargetSize), Sep_Tool_Data.Track_2_Pos_Min.X - 5, Sep_Tool_Data.Track_2_Pos_Min.Y - 5, 10, 10);
g.DrawLine(new Pen(Brushes.Yellow, LabelAttributes.TargetSize), new Point(Sep_Tool_Data.Track_1_Pos_Min.X, Sep_Tool_Data.Track_1_Pos_Min.Y), new Point(StartPosition.X, StartPosition.Y));
g.DrawLine(new Pen(Brushes.Yellow, LabelAttributes.TargetSize), new Point(Sep_Tool_Data.Track_2_Pos_Min.X, Sep_Tool_Data.Track_2_Pos_Min.Y), new Point(EndPosition.X, EndPosition.Y));
TimeSpan T = TimeSpan.FromSeconds(Sep_Tool_Data.SecondsToMinimum);
SepToolActive = "min d:" + Math.Round(Sep_Tool_Data.MinDistance, 1).ToString() + "/" + T.Minutes.ToString() + ":" + T.Seconds.ToString();
}
}
// Now compute position half way between two points.
double distance = GM.PointToPointDistance / 2.0;
if (distance > 0.0)
{
GlobalCoordinates GC = geoCalc.CalculateEndingGlobalCoordinates(reference, new GlobalCoordinates(End_LatLng.Lat, End_LatLng.Lng), GM.Azimuth, distance);
GPoint GP = FormMain.FromLatLngToLocal(new PointLatLng(GC.Latitude.Degrees, GC.Longitude.Degrees));
double Distane_NM = 0.00053996 * GM.PointToPointDistance;
g.DrawString(Math.Round(GM.Azimuth.Degrees).ToString() + "°/" + Math.Round(Distane_NM, 1).ToString() + "nm", new Font(FontFamily.GenericSansSerif, 9), Brushes.Yellow, new PointF(GP.X, GP.Y));
if (Sep_Data_Is_Valid && SepToolActive != "N/A")
{
g.DrawString(SepToolActive, new Font(FontFamily.GenericSansSerif, 9), Brushes.Yellow, new PointF(GP.X, GP.Y + 15));
}
}
}
// Here handle history points
// First draw all previous history points
int Number_of_Points_Drawn = 0;
for (int Index = HistoryPoints.Count - 2; Index >= 0; Index--)
{
if (Number_of_Points_Drawn < Properties.Settings.Default.HistoryPoints)
{
HistoryPointsType I = HistoryPoints.ElementAt(Index);
GPoint MarkerPositionLocal = FormMain.gMapControl.FromLatLngToLocal(new PointLatLng(I.LatLong.Lat, I.LatLong.Lng));
g.DrawEllipse(MyPen, MarkerPositionLocal.X, MarkerPositionLocal.Y, 3, 3);
Number_of_Points_Drawn++;
}
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Here draw speed vector
// // Find out what data should be used for speed vector? IAS, TAS, GSPD, MACH?
if ((DataItemValidator(CALC_HDG_STRING) || DataItemValidator(DAP_HDG) || DataItemValidator(TRK)) && (DataItemValidator(DAP_GSPD) || DataItemValidator(CALC_GSPD_STRING)))
{
double Azimuth = 0.0;
double Range = 0.0;
if (DataItemValidator(CALC_GSPD_STRING))
{
Range = double.Parse(CALC_GSPD_STRING);
}
else
{
Range = double.Parse(DAP_GSPD);
}
if (DataItemValidator(CALC_HDG_STRING))
{
Azimuth = double.Parse(CALC_HDG_STRING);
}
else if (DataItemValidator(TRK))
{
Azimuth = double.Parse(TRK);
}
else
{
Azimuth = double.Parse(DAP_HDG);
}
Range = (Range / 60) * (double)Properties.Settings.Default.SpeedVector;
GeoCordSystemDegMinSecUtilities.LatLongClass ResultPosition =
GeoCordSystemDegMinSecUtilities.CalculateNewPosition(new GeoCordSystemDegMinSecUtilities.LatLongClass(Position.Lat, Position.Lng), (double)Range, (double)Azimuth);
GPoint MarkerPositionLocal = FormMain.gMapControl.FromLatLngToLocal(new PointLatLng(ResultPosition.GetLatLongDecimal().LatitudeDecimal, ResultPosition.GetLatLongDecimal().LongitudeDecimal));
g.DrawLine(MyPen, new Point(LocalPosition.X, LocalPosition.Y), new Point(MarkerPositionLocal.X, MarkerPositionLocal.Y));
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
MyPen = new Pen(new SolidBrush(LabelAttributes.LineColor), LabelAttributes.LineWidth);
MyPen.DashStyle = LabelAttributes.LineStyle;
// Draw leader line
g.DrawLine(MyPen, new Point(LocalPosition.X, LocalPosition.Y), new Point(LocalPosition.X - LabelOffset.X, LocalPosition.Y - LabelOffset.Y));
// Draw label box
Point LabelStartPosition = GetLabelStartingPoint();
// Recalculate Label Width each cycle to adjust for the possible changes in the number of lines
// and changes in the text size
LabelHeight = 0;
// Draw ModeA and coast indicator
g.DrawString(ModeA_CI_STRING, ModeA_CI_FONT, ModeA_CI_BRUSH, LabelStartPosition.X + ModeA_CI_OFFSET.X, LabelStartPosition.Y + SpacingIndex);
LabelHeight = LabelHeight + (int)ModeA_CI_FONT.Size + SpacingIndex * 2;
if (CALLSIGN_STRING != "--------")
{
// Draw CALLSIGN
g.DrawString(CALLSIGN_STRING, CALLSIGN_FONT, CALLSIGN_BRUSH, LabelStartPosition.X + CALLSIGN_OFFSET.X, LabelStartPosition.Y + LabelHeight);
LabelHeight = LabelHeight + (int)CALLSIGN_FONT.Size + SpacingIndex * 2;
}
// Draw ModeC
g.DrawString(ModeC_STRING, ModeC_FONT, ModeC_BRUSH, LabelStartPosition.X + ModeC_OFFSET.X, LabelStartPosition.Y + LabelHeight);
// Draw CFL on the same line
if (ModeC_STRING == null)
{
ModeC_STRING = "---";
}
CFL_OFFSET.X = ModeC_STRING.Length * (int)ModeC_FONT.Size;
CFL_OFFSET.Y = LabelStartPosition.Y + LabelHeight;
g.DrawString(CFL_STRING, CFL_FONT, CFL_BRUSH, LabelStartPosition.X + CFL_OFFSET.X, CFL_OFFSET.Y);
CFL_START_X = LabelStartPosition.X + CFL_OFFSET.X;
CFL_START_Y = CFL_OFFSET.Y;
// Draw GSPD on the same line
GSPD_OFFSET.X = (ModeC_STRING.Length * (int)ModeC_FONT.Size) + (CFL_STRING.Length * (int)CFL_FONT.Size);
GSPD_OFFSET.Y = LabelStartPosition.Y + LabelHeight;
if (CALC_GSPD_STRING != " ---")
{
g.DrawString(CALC_GSPD_STRING, GSPD_FONT, GSPD_BRUSH, LabelStartPosition.X + GSPD_OFFSET.X, GSPD_OFFSET.Y);
}
else if (DAP_GSPD != "N/A")
{
g.DrawString(DAP_GSPD, GSPD_FONT, GSPD_BRUSH, LabelStartPosition.X + GSPD_OFFSET.X, GSPD_OFFSET.Y);
}
else
{
g.DrawString(" ---", GSPD_FONT, GSPD_BRUSH, LabelStartPosition.X + GSPD_OFFSET.X, GSPD_OFFSET.Y);
}
GSPD_START_X = LabelStartPosition.X + GSPD_OFFSET.X;
GSPD_START_Y = GSPD_OFFSET.Y;
LabelHeight = LabelHeight + (int)GSPD_FONT.Size + SpacingIndex * 2;
if (ShowLabelBox == true)
{
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// DRAW Assigned HDG, SPD and ROC
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// HDG
g.DrawString(A_HDG_STRING, A_HDG_FONT, A_HDG_BRUSH, LabelStartPosition.X + A_HDG_OFFSET.X, LabelStartPosition.Y + LabelHeight);
HDG_START_X = LabelStartPosition.X + A_HDG_OFFSET.X;
HDG_START_Y = LabelStartPosition.Y + LabelHeight;
// SPD
A_SPD_OFFSET.X = A_HDG_STRING.Length * (int)A_HDG_FONT.Size;
A_SPD_OFFSET.Y = LabelStartPosition.Y + LabelHeight;
g.DrawString(A_SPD_STRING, A_SPD_FONT, A_SPD_BRUSH, LabelStartPosition.X + A_SPD_OFFSET.X, A_SPD_OFFSET.Y);
SPD_START_X = LabelStartPosition.X + A_SPD_OFFSET.X;
SPD_START_Y = A_SPD_OFFSET.Y;
// ROC
//A_ROC_OFFSET.X = A_SPD_OFFSET.X + A_SPD_OFFSET.X + A_SPD_STRING.Length * (int)A_SPD_FONT.Size;
//A_ROC_OFFSET.Y = LabelStartPosition.Y + LabelHeight;
// g.DrawString(A_ROC_STRING, A_ROC_FONT, A_ROC_BRUSH, LabelStartPosition.X + A_ROC_OFFSET.X, A_ROC_OFFSET.Y);
LabelHeight = LabelHeight + (int)A_SPD_FONT.Size + SpacingIndex * 2;
// Add the final spacing index and draw the box
LabelHeight = LabelHeight + SpacingIndex * 2;
g.DrawRectangle(MyPen, LabelStartPosition.X, LabelStartPosition.Y, LabelWidth, LabelHeight);
}
}
