222446df29
a single apt.dat.gz file which is in the native X-Plane format. To do this I wrote a front end loader than builds the airport and runway list. Some of the changes I needed to make had a cascading effect, so there are minor naming changes scattered throughout the code.
386 lines
12 KiB
C++
386 lines
12 KiB
C++
// ATCutils.cxx - Utility functions for the ATC / AI system
|
|
//
|
|
// Written by David Luff, started March 2002.
|
|
//
|
|
// Copyright (C) 2002 David C Luff - david.luff@nottingham.ac.uk
|
|
//
|
|
// This program is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU General Public License as
|
|
// published by the Free Software Foundation; either version 2 of the
|
|
// License, or (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful, but
|
|
// WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
// General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program; if not, write to the Free Software
|
|
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
#include <math.h>
|
|
#include <simgear/math/point3d.hxx>
|
|
#include <simgear/constants.h>
|
|
#include <simgear/misc/sg_path.hxx>
|
|
#include <simgear/debug/logstream.hxx>
|
|
#include <plib/sg.h>
|
|
//#include <iomanip.h>
|
|
|
|
#include <Airports/runways.hxx>
|
|
#include <Main/globals.hxx>
|
|
|
|
#include "ATCutils.hxx"
|
|
#include "ATCProjection.hxx"
|
|
|
|
// Convert any number to spoken digits
|
|
string ConvertNumToSpokenDigits(string n) {
|
|
//cout << "n = " << n << endl;
|
|
string nums[10] = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};
|
|
string pt = "decimal";
|
|
string str = "";
|
|
|
|
for(unsigned int i=0; i<n.length(); ++i) {
|
|
//cout << "n.substr(" << i << ",1 = " << n.substr(i,1) << endl;
|
|
if(n.substr(i,1) == " ") {
|
|
// do nothing
|
|
} else if(n.substr(i,1) == ".") {
|
|
str += pt;
|
|
} else {
|
|
str += nums[atoi((n.substr(i,1)).c_str())];
|
|
}
|
|
if(i != (n.length()-1)) { // ie. don't add a space at the end.
|
|
str += " ";
|
|
}
|
|
}
|
|
return(str);
|
|
}
|
|
|
|
|
|
// Convert an integer to spoken digits
|
|
string ConvertNumToSpokenDigits(int n) {
|
|
char buf[12]; // should be big enough!!
|
|
sprintf(buf, "%i", n);
|
|
string tempstr1 = buf;
|
|
return(ConvertNumToSpokenDigits(tempstr1));
|
|
}
|
|
|
|
|
|
// Convert a 2 digit rwy number to a spoken-style string
|
|
string ConvertRwyNumToSpokenString(int n) {
|
|
string nums[10] = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};
|
|
// Basic error/sanity checking
|
|
while(n < 0) {
|
|
n += 36;
|
|
}
|
|
while(n > 36) {
|
|
n -= 36;
|
|
}
|
|
if(n == 0) {
|
|
n = 36; // Is this right?
|
|
}
|
|
|
|
string str = "";
|
|
int index = n/10;
|
|
str += nums[index];
|
|
n -= (index * 10);
|
|
//str += "-";
|
|
str += " "; //Changed this for the benefit of the voice token parser - prefer the "-" in the visual output though.
|
|
str += nums[n];
|
|
return(str);
|
|
}
|
|
|
|
// Assumes we get a two-digit string optionally appended with L, R or C
|
|
// eg 01 07L 29R 36
|
|
// Anything else is not guaranteed to be handled correctly!
|
|
string ConvertRwyNumToSpokenString(string s) {
|
|
if(s.size() < 3) {
|
|
return(ConvertRwyNumToSpokenString(atoi(s.c_str())));
|
|
} else {
|
|
string r = ConvertRwyNumToSpokenString(atoi(s.substr(0,2).c_str()));
|
|
if(s.substr(2,1) == "L") {
|
|
r += " left";
|
|
} else if(s.substr(2,1) == "R") {
|
|
r += " right";
|
|
} else if(s.substr(2,1) == "C") {
|
|
r += " center";
|
|
} else {
|
|
SG_LOG(SG_ATC, SG_WARN, "WARNING: Unknown suffix " << s.substr(2,1) << " from runway ID " << s << " in ConvertRwyNumToSpokenString(...)");
|
|
}
|
|
return(r);
|
|
}
|
|
}
|
|
|
|
|
|
// Return the phonetic letter of a letter represented as an integer 1->26
|
|
string GetPhoneticIdent(int i) {
|
|
// TODO - Check i is between 1 and 26 and wrap if necessary
|
|
return(GetPhoneticIdent(char('a' + (i-1))));
|
|
}
|
|
|
|
// Return the phonetic letter of a character in the range a-z or A-Z.
|
|
// Currently always returns prefixed by lowercase.
|
|
string GetPhoneticIdent(char c) {
|
|
c = tolower(c);
|
|
// TODO - Check c is between a and z and wrap if necessary
|
|
switch(c) {
|
|
case 'a' : return("alpha");
|
|
case 'b' : return("bravo");
|
|
case 'c' : return("charlie");
|
|
case 'd' : return("delta");
|
|
case 'e' : return("echo");
|
|
case 'f' : return("foxtrot");
|
|
case 'g' : return("golf");
|
|
case 'h' : return("hotel");
|
|
case 'i' : return("india");
|
|
case 'j' : return("juliet");
|
|
case 'k' : return("kilo");
|
|
case 'l' : return("lima");
|
|
case 'm' : return("mike");
|
|
case 'n' : return("november");
|
|
case 'o' : return("oscar");
|
|
case 'p' : return("papa");
|
|
case 'q' : return("quebec");
|
|
case 'r' : return("romeo");
|
|
case 's' : return("sierra");
|
|
case 't' : return("tango");
|
|
case 'u' : return("uniform");
|
|
case 'v' : return("victor");
|
|
case 'w' : return("whiskey");
|
|
case 'x' : return("x-ray");
|
|
case 'y' : return("yankee");
|
|
case 'z' : return("zulu");
|
|
}
|
|
// We shouldn't get here
|
|
return("Error");
|
|
}
|
|
|
|
// Get the compass direction associated with a heading in degrees
|
|
// Currently returns 8 direction resolution (N, NE, E etc...)
|
|
// Might be modified in future to return 4, 8 or 16 resolution but defaulting to 8.
|
|
string GetCompassDirection(double h) {
|
|
while(h < 0.0) h += 360.0;
|
|
while(h > 360.0) h -= 360.0;
|
|
if(h < 22.5 || h > 337.5) {
|
|
return("North");
|
|
} else if(h < 67.5) {
|
|
return("North-East");
|
|
} else if(h < 112.5) {
|
|
return("East");
|
|
} else if(h < 157.5) {
|
|
return("South-East");
|
|
} else if(h < 202.5) {
|
|
return("South");
|
|
} else if(h < 247.5) {
|
|
return("South-West");
|
|
} else if(h < 292.5) {
|
|
return("West");
|
|
} else {
|
|
return("North-West");
|
|
}
|
|
}
|
|
|
|
//================================================================================================================
|
|
|
|
// Given two positions (lat & lon in degrees), get the HORIZONTAL separation (in meters)
|
|
double dclGetHorizontalSeparation(Point3D pos1, Point3D pos2) {
|
|
double x; //East-West separation
|
|
double y; //North-South separation
|
|
double z; //Horizontal separation - z = sqrt(x^2 + y^2)
|
|
|
|
double lat1 = pos1.lat() * SG_DEGREES_TO_RADIANS;
|
|
double lon1 = pos1.lon() * SG_DEGREES_TO_RADIANS;
|
|
double lat2 = pos2.lat() * SG_DEGREES_TO_RADIANS;
|
|
double lon2 = pos2.lon() * SG_DEGREES_TO_RADIANS;
|
|
|
|
y = sin(fabs(lat1 - lat2)) * SG_EQUATORIAL_RADIUS_M;
|
|
x = sin(fabs(lon1 - lon2)) * SG_EQUATORIAL_RADIUS_M * (cos((lat1 + lat2) / 2.0));
|
|
z = sqrt(x*x + y*y);
|
|
|
|
return(z);
|
|
}
|
|
|
|
// Given a point and a line, get the HORIZONTAL shortest distance from the point to a point on the line.
|
|
// Expects to be fed orthogonal co-ordinates, NOT lat & lon !
|
|
// The units of the separation will be those of the input.
|
|
double dclGetLinePointSeparation(double px, double py, double x1, double y1, double x2, double y2) {
|
|
double vecx = x2-x1;
|
|
double vecy = y2-y1;
|
|
double magline = sqrt(vecx*vecx + vecy*vecy);
|
|
double u = ((px-x1)*(x2-x1) + (py-y1)*(y2-y1)) / (magline * magline);
|
|
double x0 = x1 + u*(x2-x1);
|
|
double y0 = y1 + u*(y2-y1);
|
|
vecx = px - x0;
|
|
vecy = py - y0;
|
|
double d = sqrt(vecx*vecx + vecy*vecy);
|
|
if(d < 0) {
|
|
d *= -1;
|
|
}
|
|
return(d);
|
|
}
|
|
|
|
// Given a position (lat/lon/elev), heading and vertical angle (degrees), and distance (meters), calculate the new position.
|
|
// This function assumes the world is spherical. If geodetic accuracy is required use the functions is sg_geodesy instead!
|
|
// Assumes that the ground is not hit!!! Expects heading and angle in degrees, distance in meters.
|
|
Point3D dclUpdatePosition(Point3D pos, double heading, double angle, double distance) {
|
|
//cout << setprecision(10) << pos.lon() << ' ' << pos.lat() << '\n';
|
|
heading *= DCL_DEGREES_TO_RADIANS;
|
|
angle *= DCL_DEGREES_TO_RADIANS;
|
|
double lat = pos.lat() * DCL_DEGREES_TO_RADIANS;
|
|
double lon = pos.lon() * DCL_DEGREES_TO_RADIANS;
|
|
double elev = pos.elev();
|
|
//cout << setprecision(10) << lon*DCL_RADIANS_TO_DEGREES << ' ' << lat*DCL_RADIANS_TO_DEGREES << '\n';
|
|
|
|
double horiz_dist = distance * cos(angle);
|
|
double vert_dist = distance * sin(angle);
|
|
|
|
double north_dist = horiz_dist * cos(heading);
|
|
double east_dist = horiz_dist * sin(heading);
|
|
|
|
//cout << distance << ' ' << horiz_dist << ' ' << vert_dist << ' ' << north_dist << ' ' << east_dist << '\n';
|
|
|
|
double delta_lat = asin(north_dist / (double)SG_EQUATORIAL_RADIUS_M);
|
|
double delta_lon = asin(east_dist / (double)SG_EQUATORIAL_RADIUS_M) * (1.0 / cos(lat)); // I suppose really we should use the average of the original and new lat but we'll assume that this will be good enough.
|
|
//cout << delta_lon*DCL_RADIANS_TO_DEGREES << ' ' << delta_lat*DCL_RADIANS_TO_DEGREES << '\n';
|
|
lat += delta_lat;
|
|
lon += delta_lon;
|
|
elev += vert_dist;
|
|
//cout << setprecision(10) << lon*DCL_RADIANS_TO_DEGREES << ' ' << lat*DCL_RADIANS_TO_DEGREES << '\n';
|
|
|
|
//cout << setprecision(15) << DCL_DEGREES_TO_RADIANS * DCL_RADIANS_TO_DEGREES << '\n';
|
|
|
|
return(Point3D(lon*DCL_RADIANS_TO_DEGREES, lat*DCL_RADIANS_TO_DEGREES, elev));
|
|
}
|
|
|
|
// Get a heading in degrees from one lat/lon to another.
|
|
// This function assumes the world is spherical. If geodetic accuracy is required use the functions is sg_geodesy instead!
|
|
// Warning - at the moment we are not checking for identical points - currently it returns 90 in this instance.
|
|
double GetHeadingFromTo(Point3D A, Point3D B) {
|
|
double latA = A.lat() * DCL_DEGREES_TO_RADIANS;
|
|
double lonA = A.lon() * DCL_DEGREES_TO_RADIANS;
|
|
double latB = B.lat() * DCL_DEGREES_TO_RADIANS;
|
|
double lonB = B.lon() * DCL_DEGREES_TO_RADIANS;
|
|
double xdist = sin(lonB - lonA) * (double)SG_EQUATORIAL_RADIUS_M * cos((latA+latB)/2.0);
|
|
double ydist = sin(latB - latA) * (double)SG_EQUATORIAL_RADIUS_M;
|
|
|
|
if(xdist >= 0) {
|
|
if(ydist > 0) {
|
|
return(atan(xdist/ydist) * DCL_RADIANS_TO_DEGREES);
|
|
} else if (ydist == 0) {
|
|
return(90.0);
|
|
} else {
|
|
return(180.0 - atan(xdist/fabs(ydist)) * DCL_RADIANS_TO_DEGREES);
|
|
}
|
|
} else {
|
|
if(ydist > 0) {
|
|
return(360.0 - atan(fabs(xdist)/ydist) * DCL_RADIANS_TO_DEGREES);
|
|
} else if (ydist == 0) {
|
|
return(270.0);
|
|
} else {
|
|
return(180.0 + atan(xdist/ydist) * DCL_RADIANS_TO_DEGREES);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Given a heading (in degrees), bound it from 0 -> 360
|
|
void dclBoundHeading(double &hdg) {
|
|
while(hdg < 0.0) {
|
|
hdg += 360.0;
|
|
}
|
|
while(hdg > 360.0) {
|
|
hdg -= 360.0;
|
|
}
|
|
}
|
|
|
|
// smallest difference between two angles in degrees
|
|
// difference is negative if a1 > a2 and positive if a2 > a1
|
|
double GetAngleDiff_deg( const double &a1, const double &a2) {
|
|
|
|
double a3 = a2 - a1;
|
|
while (a3 < 180.0) a3 += 360.0;
|
|
while (a3 > 180.0) a3 -= 360.0;
|
|
|
|
return a3;
|
|
}
|
|
|
|
//================================================================================================================
|
|
|
|
// Airport stuff. The next two functions are straight copies of their fg.... equivalents
|
|
// in fg_init.cxx, and are just here temporarily until some rationalisation occurs.
|
|
// find basic airport location info from airport database
|
|
bool dclFindAirportID( const string& id, FGAirport *a ) {
|
|
FGAirport result;
|
|
|
|
if ( id.length() ) {
|
|
SG_LOG( SG_GENERAL, SG_INFO, "Searching for airport code = " << id );
|
|
|
|
result = globals->get_airports()->search( id );
|
|
if ( result._id.empty() ) {
|
|
SG_LOG( SG_GENERAL, SG_WARN,
|
|
"Failed to find " << id << " in basic.dat.gz" );
|
|
return false;
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
*a = result;
|
|
|
|
SG_LOG( SG_GENERAL, SG_INFO,
|
|
"Position for " << id << " is ("
|
|
<< a->_longitude << ", "
|
|
<< a->_latitude << ")" );
|
|
|
|
return true;
|
|
}
|
|
|
|
// get airport elevation
|
|
double dclGetAirportElev( const string& id ) {
|
|
FGAirport a;
|
|
// double lon, lat;
|
|
|
|
SG_LOG( SG_ATC, SG_INFO,
|
|
"Finding elevation for airport: " << id );
|
|
|
|
if ( dclFindAirportID( id, &a ) ) {
|
|
return a._elevation * SG_FEET_TO_METER;
|
|
} else {
|
|
return -9999.0;
|
|
}
|
|
}
|
|
|
|
// get airport position
|
|
Point3D dclGetAirportPos( const string& id ) {
|
|
FGAirport a;
|
|
// double lon, lat;
|
|
|
|
SG_LOG( SG_ATC, SG_INFO,
|
|
"Finding position for airport: " << id );
|
|
|
|
if ( dclFindAirportID( id, &a ) ) {
|
|
return Point3D(a._longitude, a._latitude, a._elevation);
|
|
} else {
|
|
return Point3D(0.0, 0.0, -9999.0);
|
|
}
|
|
}
|
|
|
|
// Runway stuff
|
|
// Given a Point3D (lon/lat/elev) and an FGRunway struct, determine if the point lies on the runway
|
|
bool OnRunway(Point3D pt, const FGRunway& rwy) {
|
|
FGATCAlignedProjection ortho;
|
|
Point3D centre(rwy._lon, rwy._lat, 0.0); // We don't need the elev
|
|
ortho.Init(centre, rwy._heading);
|
|
|
|
Point3D xyc = ortho.ConvertToLocal(centre);
|
|
Point3D xyp = ortho.ConvertToLocal(pt);
|
|
|
|
//cout << "Length offset = " << fabs(xyp.y() - xyc.y()) << '\n';
|
|
//cout << "Width offset = " << fabs(xyp.x() - xyc.x()) << '\n';
|
|
|
|
if((fabs(xyp.y() - xyc.y()) < ((rwy._length/2.0) + 5.0))
|
|
&& (fabs(xyp.x() - xyc.x()) < (rwy._width/2.0))) {
|
|
return(true);
|
|
}
|
|
|
|
return(false);
|
|
}
|
|
|