fly/flightgear
1
0
Fork 0
Code Activity

Changes towards ground control and AI taxiing currently very hardwired to KEMT

Browse source
This commit is contained in:
daveluff 2002-12-04 19:36:39 +00:00
parent 75e51b0d81
commit 5f543a2fd1
2 changed files with 768 additions and 101 deletions

466
src/ATC/ground.cxx
View file

@ -18,10 +18,355 @@
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#include <simgear/math/sg_random.h>
#include <simgear/constants.h>
#include "ground.hxx"
FGGround::FGGround() {
display = false;
}
FGGround::~FGGround() {
}
void FGGround::Init() {
display = false;
// Build hardwired (very simplified) logical network for KEMT for now
// Once it works we'll progress to reading KEMT data from file,
// and finally to reading any airport with specified taxiway data from file.
node* np;
arc* ap;
Gate* gp;
// For now we'll hardwire the threshold end
Point3D P010(-118.037483, 34.081358, 296 * SG_FEET_TO_METER);
double hdg = 25.32;
ortho.Init(P010, hdg);
// HARDWIRED FOR TESTING - for now we'll only allow exit at each end of runway
///////////////////////////////////////////////////////
// NODES
///////////////////////////////////////////////////////
// node - runway01 threshold
Point3D p1(-118.0372167, 34.08178333, 0.0);
np = new node;
np->struct_type = NODE;
np->pos = p1;
np->orthoPos = ortho.ConvertToLocal(p1);
np->name = "rwy 01";
np->nodeID = 0;
np->type = JUNCTION;
runways[1].exits.push_back(np);
runways[19].exits.push_back(np);
//np->max_turn_radius = ...
network.push_back(np);
// node - runway19 threshold
Point3D p2(-118.0321833, 34.09066667, 0.0);
np = new node;
np->struct_type = NODE;
np->pos = p2;
np->orthoPos = ortho.ConvertToLocal(p2);
np->name = "rwy 19";
np->nodeID = 1;
np->type = JUNCTION;
runways[1].exits.push_back(np);
runways[19].exits.push_back(np);
//np->max_turn_radius = ...
network.push_back(np);
// node - AlphaSouth
Point3D p3(-118.0369167, 34.08166667, 0.0);
np = new node;
np->struct_type = NODE;
np->pos = p3;
np->orthoPos = ortho.ConvertToLocal(p3);
np->name = "";
np->nodeID = 2;
np->type = HOLD;
//np->max_turn_radius = ...
network.push_back(np);
// node - AlphaNorth
Point3D p4(-118.03185, 34.0906, 0.0);
np = new node;
np->struct_type = NODE;
np->pos = p4;
np->orthoPos = ortho.ConvertToLocal(p4);
np->name = "";
np->nodeID = 3;
np->type = HOLD;
//np->max_turn_radius = ...
network.push_back(np);
// node - southern turnoff to parking
Point3D p5(-118.03515, 34.0848, 0.0);
np = new node;
np->struct_type = NODE;
np->pos = p5;
np->orthoPos = ortho.ConvertToLocal(p5);
np->name = "";
np->nodeID = 4;
np->type = TJUNCTION;
//np->max_turn_radius = ...
network.push_back(np);
// node - northern turnoff to parking
Point3D p6(-118.0349667, 34.08511667, 0.0);
np = new node;
np->struct_type = NODE;
np->pos = p6;
np->orthoPos = ortho.ConvertToLocal(p6);
np->name = "";
np->nodeID = 5;
np->type = TJUNCTION;
//np->max_turn_radius = ...
network.push_back(np);
// GATES
// node - Turn into gate 1 (Western-most gate, ie. nearest rwy)
Point3D p7(-118.0348333, 34.08466667, 0.0);
np = new node;
np->struct_type = NODE;
np->pos = p7;
np->orthoPos = ortho.ConvertToLocal(p7);
np->name = "";
np->nodeID = 6;
np->type = TJUNCTION;
//np->max_turn_radius = ...
network.push_back(np);
// node - Gate 1
Point3D p8(-118.0347333, 34.08483333, 0.0);
gp = new Gate;
gp->struct_type = NODE;
gp->pos = p8;
gp->orthoPos = ortho.ConvertToLocal(p8);
gp->name = "";
gp->nodeID = 7;
gp->type = GATE;
gp->heading = 10;
//np->max_turn_radius = ...
network.push_back(gp);
gates[1] = *gp;
// node - Turn out of gate 1
Point3D p9(-118.03465, 34.08498333, 0.0);
np = new node;
np->struct_type = NODE;
np->pos = p9;
np->orthoPos = ortho.ConvertToLocal(p9);
np->name = "";
np->nodeID = 8;
np->type = TJUNCTION;
//np->max_turn_radius = ...
network.push_back(np);
// node - Turn into gate 2
Point3D p10(-118.0346, 34.08456667, 0.0);
np = new node;
np->struct_type = NODE;
np->pos = p10;
np->orthoPos = ortho.ConvertToLocal(p10);
np->name = "";
np->nodeID = 9;
np->type = TJUNCTION;
//np->max_turn_radius = ...
network.push_back(np);
gates[2] = *gp;
// node - Gate 2
Point3D p11(-118.0345167, 34.08473333, 0.0);
gp = new Gate;
gp->struct_type = NODE;
gp->pos = p11;
gp->orthoPos = ortho.ConvertToLocal(p11);
gp->name = "";
gp->nodeID = 10;
gp->type = GATE;
gp->heading = 10;
//np->max_turn_radius = ...
network.push_back(gp);
// node - Turn out of gate 2
Point3D p12(-118.0344167, 34.0849, 0.0);
np = new node;
np->struct_type = NODE;
np->pos = p12;
np->orthoPos = ortho.ConvertToLocal(p12);
np->name = "";
np->nodeID = 11;
np->type = TJUNCTION;
//np->max_turn_radius = ...
network.push_back(np);
/////////////////////////////////////////////////////////
// ARCS
/////////////////////////////////////////////////////////
// Each arc connects two nodes
// Eventually the nodeID of the nodes that the arc connects will be read from file
// For now we just 'know' them !!
// arc - the runway - connects nodes 0 and 1
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = RUNWAY;
ap->directed = false;
ap->n1 = 0;
ap->n2 = 1;
network[0]->arcs.push_back(ap);
network[1]->arcs.push_back(ap);
// arc - the exit from 01 threshold to alpha - connects nodes 0 and 2
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = false;
ap->n1 = 0;
ap->n2 = 2;
network[0]->arcs.push_back(ap);
network[2]->arcs.push_back(ap);
// arc - the exit from 19 threshold to alpha - connects nodes 1 and 3
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = false;
ap->n1 = 1;
ap->n2 = 3;
network[1]->arcs.push_back(ap);
network[3]->arcs.push_back(ap);
// arc - Alpha south - connects nodes 2 and 4
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = false;
ap->n1 = 2;
ap->n2 = 4;
network[2]->arcs.push_back(ap);
network[4]->arcs.push_back(ap);
// arc - Alpha middle - connects nodes 4 and 5
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = false;
ap->n1 = 4;
ap->n2 = 5;
network[4]->arcs.push_back(ap);
network[5]->arcs.push_back(ap);
// arc - Alpha North - connects nodes 3 and 5
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = false;
ap->n1 = 3;
ap->n2 = 5;
network[3]->arcs.push_back(ap);
network[5]->arcs.push_back(ap);
// arc - connects nodes 4 and 6
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = true;
ap->n1 = 4;
ap->n2 = 6;
network[4]->arcs.push_back(ap);
network[6]->arcs.push_back(ap);
// arc - connects nodes 6 and 9
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = true;
ap->n1 = 6;
ap->n2 = 9;
network[6]->arcs.push_back(ap);
network[9]->arcs.push_back(ap);
// arc - connects nodes 5 and 8
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = true;
ap->n1 = 5;
ap->n2 = 8;
network[5]->arcs.push_back(ap);
network[8]->arcs.push_back(ap);
// arc - connects nodes 8 and 11
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = true;
ap->n1 = 8;
ap->n2 = 11;
network[8]->arcs.push_back(ap);
network[11]->arcs.push_back(ap);
// arc - connects nodes 6 and 7
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = true;
ap->n1 = 6;
ap->n2 = 7;
network[6]->arcs.push_back(ap);
network[7]->arcs.push_back(ap);
// arc - connects nodes 7 and 8
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = true;
ap->n1 = 7;
ap->n2 = 8;
network[7]->arcs.push_back(ap);
network[8]->arcs.push_back(ap);
// arc - connects nodes 9 and 10
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = true;
ap->n1 = 9;
ap->n2 = 10;
network[9]->arcs.push_back(ap);
network[10]->arcs.push_back(ap);
// arc - connects nodes 10 and 11
ap = new arc;
ap->struct_type = ARC;
ap->name = "";
ap->type = TAXIWAY;
ap->directed = true;
ap->n1 = 10;
ap->n2 = 11;
network[10]->arcs.push_back(ap);
network[11]->arcs.push_back(ap);
}
void FGGround::Update() {
@ -39,6 +384,126 @@ void FGGround::Update() {
// Next we need to decide where its going.
}
// FIXME - at the moment this assumes there is at least one gate and crashes if none
// FIXME - In fact, at the moment this routine doesn't work at all and hence is munged to always return Gate 1 !!!!
int FGGround::GetRandomGateID() {
//cout << "GetRandomGateID called" << endl;
return(1);
gate_vec_type gateVec;
//gate_vec_iterator gateVecItr;
int num = 0;
int thenum;
int ID;
gatesItr = gates.begin();
while(gatesItr != gates.end()) {
if(gatesItr->second.used == false) {
gateVec.push_back(gatesItr->second);
num++;
}
++gatesItr;
}
// Randomly select one from the list
thenum = (int)(sg_random() * gateVec.size());
ID = gateVec[thenum].id;
//cout << "Returning gate ID " << ID << " from GetRandomGateID" << endl;
return(ID);
}
// Return a pointer to a gate node based on the gate ID
Gate* FGGround::GetGateNode(int gateID) {
//TODO - ought to add some sanity checking here - ie does a gate of this ID exist?!
return(&(gates[gateID]));
}
// Get a path from a point on a runway to a gate
// Get a path from a node to another node
// Eventually we will need complex algorithms for this taking other traffic,
// shortest path and suitable paths into accout. For now we're going to hardwire for KEMT!!!!
ground_network_path_type FGGround::GetPath(node* A, node* B) {
ground_network_path_type path;
//arc_array_iterator arcItr;
//bool found;
// VERY HARDWIRED - this hardwires a path from the far end of R01 to Gate 1.
// In fact in real life the area between R01/19 and Taxiway Alpha at KEMT is tarmaced and planes
// are supposed to exit the rwy asap.
// OK - for now very hardwire this for testing
path.push_back(network[1]);
path.push_back(network[1]->arcs[1]); // ONLY BECAUSE WE KNOW THIS IS THE ONE !!!!!
path.push_back(network[3]);
path.push_back(network[3]->arcs[1]);
path.push_back(network[5]);
path.push_back(network[5]->arcs[0]);
path.push_back(network[4]);
path.push_back(network[4]->arcs[2]);
path.push_back(network[6]);
path.push_back(network[6]->arcs[2]);
path.push_back(network[7]); // THE GATE!! Note that for now we're not even looking at the requested exit and gate passed in !!!!!
#if 0
// In this hardwired scheme there are two possibilities - taxiing from rwy to gate or gate to rwy.
if(B->type == GATE) {
//return an inward path
path.push_back(A);
// In this hardwired scheme we know A is a rwy exit and should have one taxiway arc only
// THIS WILL NOT HOLD TRUE IN THE GENERAL CASE
arcItr = A->arcs.begin();
found = false;
while(arcItr != A->arcs.end()) {
if(arcItr->type == TAXIWAY) {
path.push_back(&(*arcItr));
found = true;
break;
}
}
if(found == false) {
//cout << "AI/ATC SUBSYSTEM ERROR - no taxiway from runway exit in airport.cxx" << endl;
}
// Then push back the start of taxiway node
// Then push back the taxiway arc
arcItr = A->arcs.begin();
found = false;
while(arcItr != A->arcs.end()) {
if(arcItr->type == TAXIWAY) { // FIXME - OOPS - two taxiways go off this node
// How are we going to differentiate, apart from one called Alpha.
// I suppose eventually the traversal algorithms will select.
path.push_back(&(*arcItr));
found = true;
break;
}
}
if(found == false) {
//cout << "AI/ATC SUBSYSTEM ERROR - no taxiway from runway exit in airport.cxx" << endl;
}
// Then push back the junction node
// Planes always face one way in the parking, so depending on which parking exit we have either take it or push back another taxiway node
// Repeat if necessary
// Then push back the gate B
path.push_back(B);
} else {
//return an outward path
}
// WARNING TODO FIXME - this is VERY FRAGILE - eg taxi to apron!!! but should be enough to
// see an AI plane physically taxi.
#endif // 0
return(path);
};
// Randomly or otherwise populate some of the gates with parked planes
// (might eventually be done by the AIMgr if and when lots of AI traffic is generated)
// Return a list of exits from a given runway
node_array_type FGGround::GetExits(int rwyID) {
return(runways[rwyID].exits);
}
#if 0
void FGGround::NewArrival(plane_rec plane) {
// What are we going to do here?
// We need to start a new ground_rec and add the plane_rec to it
@ -78,3 +543,4 @@ void FGGround::AssignGate(ground_rec &g) {
// we'll hardwire the gate!
// In the long run the logic of which gate or area to send the plane to could be somewhat non-trivial.
}
#endif //0

297
src/ATC/ground.hxx
View file

@ -21,13 +21,27 @@
#ifndef _FG_GROUND_HXX
#define _FG_GROUND_HXX
#include STL_IOSTREAM
#include STL_STRING
SG_USING_STD(string);
#ifndef SG_HAVE_NATIVE_SGI_COMPILERS
SG_USING_STD(ios);
#endif
#include <map>
#include <vector>
#include <list>
//#include <map>
#include <simgear/math/point3d.hxx>
#include <simgear/misc/sgstream.hxx>
#include <simgear/math/sg_geodesy.hxx>
#include "ATC.hxx"
#include "ATCProjection.hxx"
SG_USING_STD(map);
SG_USING_STD(vector);
SG_USING_STD(list);
//SG_USING_STD(map);
//////////////////////////////////////////////////////
// Types for the logical network data structure
@ -39,36 +53,114 @@ typedef enum arc_type {
typedef enum node_type {
GATE,
APRON,
HOLD
HOLD,
JUNCTION,
TJUNCTION
};
typedef struct arc {
enum GateType {
TRANSPORT_PASSENGER,
TRANSPORT_PASSENGER_NARROWBODY,
TRANSPORT_PASSENGER_WIDEBODY,
TRANSPORT_CARGO,
GA_LOCAL,
GA_LOCAL_SINGLE,
GA_LOCAL_TWIN,
GA_TRANSIENT,
GA_TRANSIENT_SINGLE,
GA_TRANSIENT_TWIN,
OTHER // ie. anything goes!!
};
typedef enum network_element_type {
NODE,
ARC
};
struct ground_network_element {
network_element_type struct_type;
};
struct arc : public ground_network_element {
int distance;
char* name;
arc_type type;
bool directed; //false if 2-way, true if 1-way.
//This is a can of worms since arcs might be one way in different directions under different circumstances
unsigned int n1; // The nodeID of the first node
unsigned int n2; // The nodeID of the second node
// If the arc is directed then flow is normally from n1 to n2. See the above can of worms comment though.
};
typedef list<arc> arc_list_type;
typedef arc_list_type::iterator arc_list_itr;
typedef arc_list_type::const_iterator arc_list_const_itr;
typedef vector <arc*> arc_array_type; // This was and may become again a list instead of vector
typedef arc_array_type::iterator arc_array_iterator;
typedef arc_array_type::const_iterator arc_array_const_iterator;
typedef struct node {
point pos;
struct node : public ground_network_element {
unsigned int nodeID; //each node in an airport needs a unique ID number - this is ZERO-BASED to match array position
Point3D pos;
Point3D orthoPos;
char* name;
node_type node;
arc_list arcs;
node_type type;
arc_array_type arcs;
double max_turn_radius;
};
typedef vector<node> node_array_type;
typedef node_array_type::iterator node_array_itr;
typedef node_array_type::const_iterator node_array_const_itr;
typedef vector <node*> node_array_type;
typedef node_array_type::iterator node_array_iterator;
typedef node_array_type::const_iterator node_array_const_iterator;
struct Gate : public node {
GateType gateType;
int max_weight; //units??
//airline_code airline; //For the future - we don't have any airline codes ATM
int id; // The gate number in the logical scheme of things
string sid; // The real-world gate letter/number
//node* pNode;
bool used;
double heading; // The direction the parked-up plane should point in degrees
};
typedef vector < Gate > gate_vec_type;
typedef gate_vec_type::iterator gate_vec_iterator;
typedef gate_vec_type::const_iterator gate_vec_const_iterator;
// A map of gate vs. the logical (internal FGFS) gate ID
typedef map < int, Gate > gate_map_type;
typedef gate_map_type::iterator gate_map_iterator;
typedef gate_map_type::const_iterator gate_map_const_iterator;
// Runways - all the runway stuff is likely to change in the future
typedef struct Rwy {
int id; //note this is a very simplified scheme for now - R & L are not differentiated
//It should work for simple one rwy airports
node_array_type exits; //Array of available exits from runway
// should probably add an FGRunway structure here as well eventually
// Eventually we will also want some encoding of real-life preferred runways
// This will get us up and running for single runway airports though.
};
typedef vector < Rwy > runway_array_type;
typedef runway_array_type::iterator runway_array_iterator;
typedef runway_array_type::const_iterator runway_array_const_iterator;
// end logical network types
///////////////////////////////////////////////////////
///////////////////////////////////////////////////////
// Structures to use the network
// A path through the network
typedef vector < ground_network_element* > ground_network_path_type;
typedef ground_network_path_type::iterator ground_network_path_iterator;
typedef ground_network_path_type::const_iterator ground_network_path_const_iterator;
//////////////////////////////////////////////////////////////////////////////////////////
// Planes active within the ground network.
// somewhere in the ATC/AI system we are going to have defined something like
// typedef struct plane_rec
// list <PlaneRec> plane_rec_list_type
/*
// A more specialist plane rec to include ground information
typedef struct ground_rec {
plane_rec plane;
@ -84,6 +176,8 @@ typedef struct ground_rec {
typedef list<ground_rec*> ground_rec_list;
typedef ground_rec_list::iterator ground_rec_list_itr;
typedef ground_rec_list::const_iterator ground_rec_list_const_itr;
*/
//////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
//
@ -92,6 +186,65 @@ typedef ground_rec_list::const_iterator ground_rec_list_const_itr;
///////////////////////////////////////////////////////////////////////////////
class FGGround : public FGATC {
public:
FGGround();
~FGGround();
void Init();
void Update();
inline char get_type() const { return type; }
inline double get_lon() const { return lon; }
inline double get_lat() const { return lat; }
inline double get_elev() const { return elev; }
inline double get_x() const { return x; }
inline double get_y() const { return y; }
inline double get_z() const { return z; }
inline int get_freq() const { return freq; }
inline int get_range() const { return range; }
inline const char* GetIdent() { return ident.c_str(); }
inline string get_trans_ident() { return trans_ident; }
inline string get_name() { return name; }
inline atc_type GetType() { return GROUND; }
inline void SetDisplay() {display = true;}
inline void SetNoDisplay() {display = false;}
// Its possible that NewArrival and NewDeparture should simply be rolled into Request.
// Contact ground control on arrival, assumed to request any gate
//void NewArrival(plane_rec plane);
// Contact ground control on departure, assumed to request currently active runway.
//void NewDeparture(plane_rec plane);
// Contact ground control when the calling routine doesn't know if arrival
// or departure is appropriate.
//void NewContact(plane_rec plane);
// Make a request of ground control.
//void Request(ground_request request);
// Randomly fill some of the available gates and GA parking spots with planes
void PopulateGates();
// Return a suitable gate (maybe this should be a list of suitable gates so the plane or controller can choose the closest one)
void ReturnGate(Gate &gate, GateType type);
//The following two functions have been made public for now but may go private with a higher level accessor at some point
// Return the internal ID of a random, suitable, unused gate
// For now we are simply implementing as any random unused gate
int GetRandomGateID();
// Return a pointer to a node based on the gate ID
Gate* GetGateNode(int gateID);
// Runway stuff - this might change in the future.
// Get a list of exits from a given runway
node_array_type GetExits(int rwyID);
// Get a path from one node to another
ground_network_path_type GetPath(node* A, node* B);
private:
// Need a data structure to hold details of the various active planes
@ -101,50 +254,98 @@ private:
// Need a data structure to hold outstanding communications from aircraft.
// Possibly need a data structure to hold outstanding communications to aircraft.
// logical network
// The logical network
// NODES WILL BE STORED IN THE NETWORK IN ORDER OF nodeID NUMBER
// ie. NODE 5 WILL BE AT network[5]
node_array_type network;
// A map of all the gates indexed against internal (FGFS) ID
gate_map_type gates;
gate_map_iterator gatesItr;
// Runway stuff - this might change in the future.
//runway_array_type runways; // STL way
Rwy runways[36]; // quick hack!
FGATCAlignedProjection ortho;
// Planes currently active
ground_rec_list ground_traffic;
public:
void Init();
void Update();
inline void SetDisplay() {display = true;}
inline void SetNoDisplay() {display = false;}
// Its possible that NewArrival and NewDeparture should simply be rolled into Request.
// Contact ground control on arrival, assumed to request any gate
void NewArrival(plane_rec plane);
// Contact ground control on departure, assumed to request currently active runway.
void NewDeparture(plane_rec plane);
// Contact ground control when the calling routine doesn't know if arrival
// or departure is appropriate.
void NewContact(plane_rec plane);
// Make a request of ground control.
void Request(ground_request request);
private:
//ground_rec_list ground_traffic;
// Find the shortest route through the logical network between two points.
FindShortestRoute(point a, point b);
//FindShortestRoute(point a, point b);
// Project a point in WGS84 lat/lon onto the local gnomonic.
ConvertWGS84ToXY(sgVec3 wgs84, point xy);
//ConvertWGS84ToXY(sgVec3 wgs84, point xy);
// Assign a gate or parking location to a new arrival
AssignGate(ground_rec &g);
//AssignGate(ground_rec &g);
// Generate the next clearance for an airplane
NextClearance(ground_rec &g);
//NextClearance(ground_rec &g);
char type;
double lon, lat;
double elev;
double x, y, z;
int freq;
int range;
bool display; // Flag to indicate whether we should be outputting to the ATC display.
bool displaying; // Flag to indicate whether we are outputting to the ATC display.
string ident; // Code of the airport its at.
string name; // Name generally used in transmissions.
// for failure modeling
string trans_ident; // transmitted ident
bool ground_failed; // ground failed?
friend istream& operator>> ( istream&, FGGround& );
};
#endif //_FG_GROUND_HXX
inline istream&
operator >> ( istream& in, FGGround& g )
{
double f;
char ch;
in >> g.type;
if ( g.type == '[' )
return in >> skipeol;
in >> g.lat >> g.lon >> g.elev >> f >> g.range
>> g.ident;
g.name = "";
in >> ch;
g.name += ch;
while(1) {
//in >> noskipws
in.unsetf(ios::skipws);
in >> ch;
g.name += ch;
if((ch == '"') || (ch == 0x0A)) {
break;
} // we shouldn't need the 0x0A but it makes a nice safely in case someone leaves off the "
}
in.setf(ios::skipws);
//cout << "tower.name = " << t.name << '\n';
g.freq = (int)(f*100.0 + 0.5);
// cout << g.ident << endl;
// generate cartesian coordinates
Point3D geod( g.lon * SGD_DEGREES_TO_RADIANS, g.lat * SGD_DEGREES_TO_RADIANS, g.elev );
Point3D cart = sgGeodToCart( geod );
g.x = cart.x();
g.y = cart.y();
g.z = cart.z();
g.trans_ident = g.ident;
g.ground_failed = false;
return in >> skipeol;
}
#endif // _FG_GROUND_HXX