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Nicer default SID and approach procedures.

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Note these are still generic and do NOT take local terrain into account. Don't come crying to me if you fly into nearby terrain because you weren't using a real procedure!
This commit is contained in:
James Turner 2012-12-30 15:37:25 +00:00
parent 8aa05a871a
commit 44a44a0246
1 changed files with 65 additions and 12 deletions
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77
src/Autopilot/route_mgr.cxx
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@ -918,7 +918,14 @@ const char* FGRouteMgr::getSID() const
return "";
}
flightgear::SID* createDefaultSID(FGRunway* aRunway)
static double headingDiffDeg(double a, double b)
{
double rawDiff = b - a;
SG_NORMALIZE_RANGE(rawDiff, -180.0, 180.0);
return rawDiff;
}
flightgear::SID* createDefaultSID(FGRunway* aRunway, double enrouteCourse)
{
if (!aRunway) {
return NULL;
@ -931,23 +938,41 @@ flightgear::SID* createDefaultSID(FGRunway* aRunway)
SGGeod p = aRunway->pointOnCenterline(aRunway->lengthM() + (3.0 * SG_NM_TO_METER));
WayptRef w = new BasicWaypt(p, ss.str(), NULL);
w->setAltitude(runwayElevFt + 2000.0, RESTRICT_AT);
w->setAltitude(runwayElevFt + 3000.0, RESTRICT_AT);
wpts.push_back(w);
ss.str("");
ss << aRunway->ident() << "-6";
p = aRunway->pointOnCenterline(aRunway->lengthM() + (6.0 * SG_NM_TO_METER));
w = new BasicWaypt(p, ss.str(), NULL);
w->setAltitude(runwayElevFt + 4000.0, RESTRICT_AT);
wpts.push_back(w);
ss.str("");
ss << aRunway->ident() << "-9";
p = aRunway->pointOnCenterline(aRunway->lengthM() + (9.0 * SG_NM_TO_METER));
w = new BasicWaypt(p, ss.str(), NULL);
w->setAltitude(runwayElevFt + 6000.0, RESTRICT_AT);
wpts.push_back(w);
if (enrouteCourse >= 0.0) {
// valid enroute course
int index = 3;
double course = aRunway->headingDeg();
double diff;
while (fabs(diff = headingDiffDeg(course, enrouteCourse)) > 45.0) {
// turn in the sign of the heading change 45 degrees
course += copysign(45.0, diff);
ss.str("");
ss << "DEP-" << index++;
SGGeod pos = wpts.back()->position();
pos = SGGeodesy::direct(pos, course, 3.0 * SG_NM_TO_METER);
w = new BasicWaypt(pos, ss.str(), NULL);
wpts.push_back(w);
}
} else {
// no enroute course, just keep runway heading
ss.str("");
ss << aRunway->ident() << "-9";
p = aRunway->pointOnCenterline(aRunway->lengthM() + (9.0 * SG_NM_TO_METER));
w = new BasicWaypt(p, ss.str(), NULL);
w->setAltitude(runwayElevFt + 9000.0, RESTRICT_AT);
wpts.push_back(w);
}
BOOST_FOREACH(Waypt* w, wpts) {
w->setFlag(WPT_DEPARTURE);
w->setFlag(WPT_GENERATED);
@ -965,7 +990,12 @@ void FGRouteMgr::setSID(const char* aIdent)
}
if (!strcmp(aIdent, "DEFAULT")) {
_plan->setSID(createDefaultSID(_plan->departureRunway()));
double enrouteCourse = -1.0;
if (_plan->destinationAirport()) {
enrouteCourse = SGGeodesy::courseDeg(apt->geod(), _plan->destinationAirport()->geod());
}
_plan->setSID(createDefaultSID(_plan->departureRunway(), enrouteCourse));
return;
}
@ -1038,7 +1068,7 @@ const char* FGRouteMgr::getApproach() const
return "";
}
flightgear::Approach* createDefaultApproach(FGRunway* aRunway)
flightgear::Approach* createDefaultApproach(FGRunway* aRunway, double aEnrouteCourse)
{
if (!aRunway) {
return NULL;
@ -1057,6 +1087,24 @@ flightgear::Approach* createDefaultApproach(FGRunway* aRunway)
w->setAltitude(thresholdElevFt + 4000, RESTRICT_AT);
wpts.push_back(w);
// work back form the first point on the centerline
if (aEnrouteCourse >= 0.0) {
// valid enroute course
int index = 4;
double course = aRunway->headingDeg();
double diff;
while (fabs(diff = headingDiffDeg(aEnrouteCourse, course)) > 45.0) {
// turn in the sign of the heading change 45 degrees
course -= copysign(45.0, diff);
ss.str("");
ss << "APP-" << index++;
SGGeod pos = wpts.front()->position();
pos = SGGeodesy::direct(pos, course + 180.0, 3.0 * SG_NM_TO_METER);
w = new BasicWaypt(pos, ss.str(), NULL);
wpts.insert(wpts.begin(), w);
}
}
p = aRunway->pointOnCenterline(-8.0 * SG_NM_TO_METER);
ss.str("");
@ -1084,7 +1132,12 @@ void FGRouteMgr::setApproach(const char* aIdent)
{
FGAirport* apt = _plan->destinationAirport();
if (!strcmp(aIdent, "DEFAULT")) {
_plan->setApproach(createDefaultApproach(_plan->destinationRunway()));
double enrouteCourse = -1.0;
if (_plan->departureAirport()) {
enrouteCourse = SGGeodesy::courseDeg(_plan->departureAirport()->geod(), apt->geod());
}
_plan->setApproach(createDefaultApproach(_plan->destinationRunway(), enrouteCourse));
return;
}