src/Navaids/PositionedBinding.cxx

   1 #ifdef HAVE_CONFIG_H
   2 #  include "config.h"
   3 #endif
   4
   5 #include "PositionedBinding.hxx"
   6
   7 #include <map>
   8
   9 #include <simgear/props/props.hxx>
  10 #include <simgear/debug/logstream.hxx>
  11 #include <simgear/structure/exception.hxx>
  12
  13 #include <Main/fg_props.hxx>
  14 #include <Navaids/navrecord.hxx>
  15 #include <Airports/simple.hxx>
  16 #include <Airports/runways.hxx>
  17 #include <ATC/CommStation.hxx>
  18
  19 typedef std::map<SGPropertyNode*, flightgear::PositionedBinding*> BindingMap;
  20 static BindingMap static_bindings;
  21
  22 namespace {
  23
  24 class PropertyDeleteObserver : public SGPropertyChangeListener
  25 {
  26 public:
  27     virtual void childRemoved(SGPropertyNode*, SGPropertyNode* node)
  28     {
  29         BindingMap::iterator it = static_bindings.find(node);
  30         if (it != static_bindings.end()) {
  31             SG_LOG(SG_GENERAL, SG_INFO, "saw remove of:" << node->getPath() << ", deleting binding");
  32             delete it->second;
  33             static_bindings.erase(it);
  34         }
  35     }
  36 };
  37
  38 static PropertyDeleteObserver* static_deleteObserver = NULL;
  39
  40 } // of anonymous namespace
  41
  42 namespace flightgear
  43 {
  44
  45 PositionedBinding::PositionedBinding(const FGPositioned* pos, SGPropertyNode* nd) :
  46     p(const_cast<FGPositioned*>(pos)),
  47     tied(nd)
  48 {
  49     if (!static_deleteObserver) {
  50         static_deleteObserver = new PropertyDeleteObserver;
  51         globals->get_props()->addChangeListener(static_deleteObserver, false);
  52     }
  53
  54     nd->setDoubleValue("latitude-deg", p->latitude());
  55     nd->setDoubleValue("longitude-deg", p->longitude());
  56
  57     if (p->elevation() > -1000) {
  58         nd->setDoubleValue("elevation-ft", p->elevation());
  59     }
  60
  61     nd->setStringValue("ident", p->ident());
  62     if (!p->name().empty()) {
  63         nd->setStringValue("name", p->name());
  64     }
  65
  66     nd->setStringValue("type", FGPositioned::nameForType(p->type()));
  67 }
  68
  69 PositionedBinding::~PositionedBinding()
  70 {
  71     tied.Untie();
  72 }
  73
  74 void PositionedBinding::bind(FGPositioned* pos, SGPropertyNode* node)
  75 {
  76     BindingMap::iterator it = static_bindings.find(node);
  77     if (it != static_bindings.end()) {
  78         throw sg_exception("duplicate positioned binding", node->getPath());
  79     }
  80
  81     PositionedBinding* binding = pos->createBinding(node);
  82     static_bindings.insert(it, std::make_pair(node, binding));
  83 }
  84
  85 NavaidBinding::NavaidBinding(const FGNavRecord* nav, SGPropertyNode* nd) :
  86     PositionedBinding(nav, nd)
  87 {
  88     FGPositioned::Type ty = nav->type();
  89     if (ty == FGPositioned::NDB) {
  90         nd->setDoubleValue("frequency-khz", nav->get_freq() / 100.0);
  91     } else {
  92         nd->setDoubleValue("frequency-mhz", nav->get_freq() / 100.0);
  93     }
  94
  95     if ((ty == FGPositioned::LOC) || (ty == FGPositioned::ILS)) {
  96       nd->setDoubleValue("loc-course-deg", nav->get_multiuse());
  97     }
  98
  99     if (ty == FGPositioned::GS) {
 100         nd->setDoubleValue("gs-angle-deg", nav->get_multiuse());
 101     }
 102
 103     nd->setDoubleValue("range-nm", nav->get_range());
 104
 105     if (nav->runway()) {
 106         // don't want to create a cycle in the graph, so we don't re-bind
 107         // the airport/runway node here - just expose the IDs
 108         nd->setStringValue("airport", nav->runway()->airport()->ident());
 109         nd->setStringValue("runway", nav->runway()->ident());
 110     }
 111 };
 112
 113 RunwayBinding::RunwayBinding(const FGRunway* rwy, SGPropertyNode* nd) :
 114     PositionedBinding(rwy, nd)
 115 {
 116     nd->setDoubleValue("length-ft", rwy->lengthFt());
 117     nd->setDoubleValue("length-m", rwy->lengthM());
 118     nd->setDoubleValue("width-ft", rwy->widthFt());
 119     nd->setDoubleValue("width-m", rwy->widthM());
 120     nd->setDoubleValue("heading-deg", rwy->headingDeg());
 121     nd->setBoolValue("hard-surface", rwy->isHardSurface());
 122
 123     nd->setDoubleValue("threshold-displacement-m", rwy->displacedThresholdM());
 124     nd->setDoubleValue("stopway-m", rwy->stopwayM());
 125
 126     if (rwy->ILS()) {
 127         SGPropertyNode* ilsNode = nd->getChild("ils", 0, true);
 128         PositionedBinding::bind(rwy->ILS(), ilsNode);
 129     }
 130 }
 131
 132 AirportBinding::AirportBinding(const FGAirport* apt, SGPropertyNode* nd) :
 133     PositionedBinding(apt, nd)
 134 {
 135     nd->setIntValue("num-runways", apt->numRunways());
 136
 137     SGGeod tower = apt->getTowerLocation();
 138     nd->setDoubleValue("tower/latitude-deg", tower.getLatitudeDeg());
 139     nd->setDoubleValue("tower/longitude-deg", tower.getLongitudeDeg());
 140     nd->setDoubleValue("tower/elevation-ft", tower.getElevationFt());
 141
 142     for (unsigned int r=0; r<apt->numRunways(); ++r) {
 143         SGPropertyNode* rn = nd->getChild("runway", r, true);
 144         FGRunway* rwy = apt->getRunwayByIndex(r);
 145         PositionedBinding::bind(rwy, rn);
 146     }
 147
 148     for (unsigned int c=0; c<apt->commStations().size(); ++c) {
 149         flightgear::CommStation* comm = apt->commStations()[c];
 150         std::string tynm = FGPositioned::nameForType(comm->type());
 151         int count = nd->getChildren(tynm).size();
 152
 153         SGPropertyNode* commNode = nd->getChild(tynm, count, true);
 154         commNode->setStringValue("ident", comm->ident());
 155         commNode->setDoubleValue("frequency-mhz", comm->freqMHz());
 156     }
 157 }
 158
 159 CommStationBinding::CommStationBinding(const CommStation* sta, SGPropertyNode* node) :
 160     PositionedBinding(sta, node)
 161 {
 162     node->setIntValue("range-nm", sta->rangeNm());
 163     node->setDoubleValue("frequency-mhz", sta->freqMHz());
 164
 165     if (sta->airport()) {
 166         // don't want to create a cycle in the graph, so we don't re-bind
 167         // the airport/runway node here - just expose the IDs
 168         node->setStringValue("airport", sta->airport()->ident());
 169     }
 170 }
 171
 172 } // of namespace flightgear
 173