5 #include "MapWidget.hxx"
8 #include <algorithm> // for std::sort
9 #include <plib/puAux.h>
11 #include <simgear/sg_inlines.h>
12 #include <simgear/misc/strutils.hxx>
13 #include <simgear/magvar/magvar.hxx>
14 #include <simgear/timing/sg_time.hxx> // for magVar julianDate
15 #include <simgear/structure/exception.hxx>
17 #include <Main/globals.hxx>
18 #include <Main/fg_props.hxx>
19 #include <Autopilot/route_mgr.hxx>
20 #include <Navaids/positioned.hxx>
21 #include <Navaids/navrecord.hxx>
22 #include <Navaids/navlist.hxx>
23 #include <Navaids/fix.hxx>
24 #include <Airports/airport.hxx>
25 #include <Airports/runways.hxx>
26 #include <Main/fg_os.hxx> // fgGetKeyModifiers()
27 #include <Navaids/routePath.hxx>
28 #include <Aircraft/FlightHistory.hxx>
30 const char* RULER_LEGEND_KEY = "ruler-legend";
32 /* equatorial and polar earth radius */
33 const float rec = 6378137; // earth radius, equator (?)
34 const float rpol = 6356752.314f; // earth radius, polar (?)
36 /************************************************************************
37 some trigonometric helper functions
38 (translated more or less directly from Alexei Novikovs perl original)
39 *************************************************************************/
41 //Returns Earth radius at a given latitude (Ellipsoide equation with two equal axis)
42 static float earth_radius_lat( float lat )
44 double a = cos(lat)/rec;
45 double b = sin(lat)/rpol;
46 return 1.0f / sqrt( a * a + b * b );
49 ///////////////////////////////////////////////////////////////////////////
51 static puBox makePuBox(int x, int y, int w, int h)
61 static bool puBoxIntersect(const puBox& a, const puBox& b)
63 int x0 = SG_MAX2(a.min[0], b.min[0]);
64 int y0 = SG_MAX2(a.min[1], b.min[1]);
65 int x1 = SG_MIN2(a.max[0], b.max[0]);
66 int y1 = SG_MIN2(a.max[1], b.max[1]);
68 return (x0 <= x1) && (y0 <= y1);
72 typedef std::vector<MapData*> MapDataVec;
77 static const int HALIGN_LEFT = 1;
78 static const int HALIGN_CENTER = 2;
79 static const int HALIGN_RIGHT = 3;
81 static const int VALIGN_TOP = 1 << 4;
82 static const int VALIGN_CENTER = 2 << 4;
83 static const int VALIGN_BOTTOM = 3 << 4;
85 MapData(int priority) :
91 _offsetDir(HALIGN_LEFT | VALIGN_CENTER),
97 void setLabel(const std::string& label)
99 if (label == _label) {
100 return; // common case, and saves invalidation
107 void setText(const std::string &text)
109 if (_rawText == text) {
110 return; // common case, and saves invalidation
117 void setDataVisible(bool vis) {
118 if (vis == _dataVisible) {
122 if (_rawText.empty()) {
130 static void setFont(puFont f)
133 _fontHeight = f.getStringHeight();
134 _fontDescender = f.getStringDescender();
137 static void setPalette(puColor* pal)
142 void setPriority(int pri)
148 { return _priority; }
150 void setAnchor(const SGVec2d& anchor)
155 void setOffset(int direction, int px)
157 if ((_offsetPx == px) && (_offsetDir == direction)) {
162 _offsetDir = direction;
166 bool isClipped(const puBox& vis) const
169 if ((_width < 1) || (_height < 1)) {
173 return !puBoxIntersect(vis, box());
176 bool overlaps(const MapDataVec& l) const
181 MapDataVec::const_iterator it;
182 for (it = l.begin(); it != l.end(); ++it) {
183 if (puBoxIntersect(b, (*it)->box())) {
186 } // of list iteration
195 _anchor.x() + _offset.x(),
196 _anchor.y() + _offset.y(),
204 int xx = _anchor.x() + _offset.x();
205 int yy = _anchor.y() + _offset.y();
208 puBox box(makePuBox(0,0,_width, _height));
210 box.draw(xx, yy, PUSTYLE_DROPSHADOW, _palette, FALSE, border);
213 int lineHeight = _fontHeight;
214 int xPos = xx + MARGIN;
215 int yPos = yy + _height - (lineHeight + MARGIN);
216 glColor3f(0.8, 0.8, 0.8);
218 for (unsigned int ln=0; ln<_lines.size(); ++ln) {
219 _font.drawString(_lines[ln].c_str(), xPos, yPos);
220 yPos -= lineHeight + LINE_LEADING;
223 glColor3f(0.8, 0.8, 0.8);
224 _font.drawString(_label.c_str(), xx, yy + _fontDescender);
238 bool isExpired() const
239 { return (_age > 100); }
241 static bool order(MapData* a, MapData* b)
243 return a->_priority > b->_priority;
246 void validate() const
266 void measureData() const
268 _lines = simgear::strutils::split(_rawText, "\n");
269 // measure text to find width and height
273 for (unsigned int ln=0; ln<_lines.size(); ++ln) {
274 _height += _fontHeight;
276 _height += LINE_LEADING;
279 int lw = _font.getStringWidth(_lines[ln].c_str());
280 _width = std::max(_width, lw);
281 } // of line measurement
283 if ((_width < 1) || (_height < 1)) {
288 _height += MARGIN * 2;
289 _width += MARGIN * 2;
292 void measureLabel() const
294 if (_label.empty()) {
295 _width = _height = -1;
299 _height = _fontHeight;
300 _width = _font.getStringWidth(_label.c_str());
303 void computeOffset() const
305 _dirtyOffset = false;
306 if ((_width <= 0) || (_height <= 0)) {
313 switch (_offsetDir & 0x0f) {
320 hOffset = -(_width>>1);
324 hOffset = -(_offsetPx + _width);
328 switch (_offsetDir & 0xf0) {
331 vOffset = -(_offsetPx + _height);
335 vOffset = -(_height>>1);
343 _offset = SGVec2d(hOffset, vOffset);
346 static const int LINE_LEADING = 3;
347 static const int MARGIN = 3;
349 mutable bool _dirtyText;
350 mutable bool _dirtyOffset;
352 std::string _rawText;
354 mutable std::vector<std::string> _lines;
356 mutable int _width, _height;
360 mutable SGVec2d _offset;
364 static puColor* _palette;
365 static int _fontHeight;
366 static int _fontDescender;
369 puFont MapData::_font;
370 puColor* MapData::_palette;
371 int MapData::_fontHeight = 0;
372 int MapData::_fontDescender = 0;
374 ///////////////////////////////////////////////////////////////////////////
376 const int MAX_ZOOM = 12;
377 const int SHOW_DETAIL_ZOOM = 8;
378 const int SHOW_DETAIL2_ZOOM = 5;
379 const int CURSOR_PAN_STEP = 32;
381 MapWidget::MapWidget(int x, int y, int maxX, int maxY) :
382 puObject(x,y,maxX, maxY)
384 _route = static_cast<FGRouteMgr*>(globals->get_subsystem("route-manager"));
385 _gps = fgGetNode("/instrumentation/gps");
390 _orthoAzimuthProject = false;
391 _magneticHeadings = false;
393 MapData::setFont(legendFont);
394 MapData::setPalette(colour);
396 _magVar = new SGMagVar();
399 MapWidget::~MapWidget()
405 void MapWidget::setProperty(SGPropertyNode_ptr prop)
408 int zoom = _root->getIntValue("zoom", -1);
410 _root->setIntValue("zoom", 6); // default zoom
413 // expose MAX_ZOOM to the UI
414 _root->setIntValue("max-zoom", MAX_ZOOM);
415 _root->setBoolValue("centre-on-aircraft", true);
416 _root->setBoolValue("draw-data", false);
417 _root->setBoolValue("draw-flight-history", false);
418 _root->setBoolValue("magnetic-headings", true);
421 void MapWidget::setSize(int w, int h)
423 puObject::setSize(w, h);
430 void MapWidget::doHit( int button, int updown, int x, int y )
432 puObject::doHit(button, updown, x, y);
433 if (updown == PU_DRAG) {
438 if (button == 3) { // mouse-wheel up
440 } else if (button == 4) { // mouse-wheel down
444 if (button != active_mouse_button) {
448 _hitLocation = SGVec2d(x - abox.min[0], y - abox.min[1]);
450 if (updown == PU_UP) {
451 puDeactivateWidget();
452 } else if (updown == PU_DOWN) {
453 puSetActiveWidget(this, x, y);
455 if (fgGetKeyModifiers() & KEYMOD_CTRL) {
456 _clickGeod = unproject(_hitLocation - SGVec2d(_width>>1, _height>>1));
461 void MapWidget::handlePan(int x, int y)
463 SGVec2d delta = SGVec2d(x, y) - _hitLocation;
465 _hitLocation = SGVec2d(x,y);
468 int MapWidget::checkKey (int key, int updown )
470 if ((updown == PU_UP) || !isVisible () || !isActive () || (window != puGetWindow())) {
478 pan(SGVec2d(0, -CURSOR_PAN_STEP));
482 pan(SGVec2d(0, CURSOR_PAN_STEP));
486 pan(SGVec2d(CURSOR_PAN_STEP, 0));
490 pan(SGVec2d(-CURSOR_PAN_STEP, 0));
509 void MapWidget::pan(const SGVec2d& delta)
512 _projectionCenter = unproject(-delta);
515 int MapWidget::zoom() const
517 int z = _root->getIntValue("zoom");
518 SG_CLAMP_RANGE(z, 0, MAX_ZOOM);
522 void MapWidget::zoomIn()
524 if (zoom() >= MAX_ZOOM) {
528 _root->setIntValue("zoom", zoom() + 1);
531 void MapWidget::zoomOut()
537 _root->setIntValue("zoom", zoom() - 1);
540 void MapWidget::draw(int dx, int dy)
542 _aircraft = globals->get_aircraft_position();
544 bool mag = _root->getBoolValue("magnetic-headings");
545 if (mag != _magneticHeadings) {
546 clearData(); // flush cached data text, since it often includes heading
547 _magneticHeadings = mag;
551 _root->setBoolValue("centre-on-aircraft", false);
554 else if (_root->getBoolValue("centre-on-aircraft")) {
555 _projectionCenter = _aircraft;
558 double julianDate = globals->get_time_params()->getJD();
559 _magVar->update(_projectionCenter, julianDate);
561 bool aircraftUp = _root->getBoolValue("aircraft-heading-up");
563 _upHeading = fgGetDouble("/orientation/heading-deg");
568 _cachedZoom = MAX_ZOOM - zoom();
569 SGGeod topLeft = unproject(SGVec2d(_width/2, _height/2));
570 // compute draw range, including a fudge factor for ILSs and other 'long'
572 _drawRangeNm = SGGeodesy::distanceNm(_projectionCenter, topLeft) + 10.0;
574 // drawing operations
575 GLint sx = (int) abox.min[0],
576 sy = (int) abox.min[1];
577 glScissor(dx + sx, dy + sy, _width, _height);
578 glEnable(GL_SCISSOR_TEST);
580 glMatrixMode(GL_MODELVIEW);
582 // cetere drawing about the widget center (which is also the
583 // projection centre)
584 glTranslated(dx + sx + (_width/2), dy + sy + (_height/2), 0.0);
589 int textHeight = legendFont.getStringHeight() + 5;
592 SGVec2d loc = project(_aircraft);
593 glColor3f(1.0, 1.0, 1.0);
594 drawLine(loc, SGVec2d(loc.x(), (_height / 2) - textHeight));
597 if (_magneticHeadings) {
598 displayHdg = (int) fgGetDouble("/orientation/heading-magnetic-deg");
600 displayHdg = (int) _upHeading;
603 double y = (_height / 2) - textHeight;
605 ::snprintf(buf, 16, "%d", displayHdg);
606 int sw = legendFont.getStringWidth(buf);
607 legendFont.drawString(buf, loc.x() - sw/2, y);
615 drawNavRadio(fgGetNode("/instrumentation/nav[0]", false));
616 drawNavRadio(fgGetNode("/instrumentation/nav[1]", false));
617 paintAircraftLocation(_aircraft);
625 glDisable(GL_SCISSOR_TEST);
628 void MapWidget::paintRuler()
630 if (_clickGeod == SGGeod()) {
634 SGVec2d acftPos = project(_aircraft);
635 SGVec2d clickPos = project(_clickGeod);
637 glColor4f(0.0, 1.0, 1.0, 0.6);
638 drawLine(acftPos, clickPos);
640 circleAtAlt(clickPos, 8, 10, 5);
642 double dist, az, az2;
643 SGGeodesy::inverse(_aircraft, _clickGeod, az, az2, dist);
645 ::snprintf(buffer, 1024, "%03d/%.1fnm",
646 displayHeading(az), dist * SG_METER_TO_NM);
648 MapData* d = getOrCreateDataForKey((void*) RULER_LEGEND_KEY);
650 d->setAnchor(clickPos);
651 d->setOffset(MapData::VALIGN_TOP | MapData::HALIGN_CENTER, 15);
652 d->setPriority(20000);
657 void MapWidget::paintAircraftLocation(const SGGeod& aircraftPos)
659 SGVec2d loc = project(aircraftPos);
661 double hdg = fgGetDouble("/orientation/heading-deg");
664 glColor4f(1.0, 1.0, 0.0, 1.0);
666 glTranslated(loc.x(), loc.y(), 0.0);
667 glRotatef(hdg - _upHeading, 0.0, 0.0, -1.0);
669 const SGVec2d wingspan(12, 0);
670 const SGVec2d nose(0, 8);
671 const SGVec2d tail(0, -14);
672 const SGVec2d tailspan(4,0);
674 drawLine(-wingspan, wingspan);
675 drawLine(nose, tail);
676 drawLine(tail - tailspan, tail + tailspan);
682 void MapWidget::paintRoute()
684 if (_route->numWaypts() < 2) {
688 RoutePath path(_route->flightPlan());
690 // first pass, draw the actual lines
693 for (int w=0; w<_route->numWaypts(); ++w) {
694 SGGeodVec gv(path.pathForIndex(w));
699 if (w < _route->currentIndex()) {
700 glColor4f(0.5, 0.5, 0.5, 0.7);
702 glColor4f(1.0, 0.0, 1.0, 1.0);
705 flightgear::WayptRef wpt(_route->wayptAtIndex(w));
706 if (wpt->flag(flightgear::WPT_MISS)) {
707 glEnable(GL_LINE_STIPPLE);
708 glLineStipple(1, 0x00FF);
711 glBegin(GL_LINE_STRIP);
712 for (unsigned int i=0; i<gv.size(); ++i) {
713 SGVec2d p = project(gv[i]);
714 glVertex2d(p.x(), p.y());
718 glDisable(GL_LINE_STIPPLE);
722 // second pass, draw waypoint symbols and data
723 for (int w=0; w < _route->numWaypts(); ++w) {
724 flightgear::WayptRef wpt(_route->wayptAtIndex(w));
725 SGGeod g = path.positionForIndex(w);
727 continue; // Vectors or similar
730 SGVec2d p = project(g);
731 glColor4f(1.0, 0.0, 1.0, 1.0);
732 circleAtAlt(p, 8, 12, 5);
734 std::ostringstream legend;
735 legend << wpt->ident();
736 if (wpt->altitudeRestriction() != flightgear::RESTRICT_NONE) {
737 legend << '\n' << SGMiscd::roundToInt(wpt->altitudeFt()) << '\'';
740 if (wpt->speedRestriction() == flightgear::SPEED_RESTRICT_MACH) {
741 legend << '\n' << wpt->speedMach() << "M";
742 } else if (wpt->speedRestriction() != flightgear::RESTRICT_NONE) {
743 legend << '\n' << SGMiscd::roundToInt(wpt->speedKts()) << "Kts";
746 MapData* d = getOrCreateDataForKey(reinterpret_cast<void*>(w * 2));
747 d->setText(legend.str());
748 d->setLabel(wpt->ident());
750 d->setOffset(MapData::VALIGN_TOP | MapData::HALIGN_CENTER, 15);
751 d->setPriority(w < _route->currentIndex() ? 9000 : 12000);
753 } // of second waypoint iteration
756 void MapWidget::drawFlightHistory()
758 FGFlightHistory* history = (FGFlightHistory*) globals->get_subsystem("history");
759 if (!history || !_root->getBoolValue("draw-flight-history")) {
763 // first pass, draw the actual lines
766 SGGeodVec gv(history->pathForHistory());
767 glColor4f(0.0, 0.0, 1.0, 0.7);
769 glBegin(GL_LINE_STRIP);
770 for (unsigned int i=0; i<gv.size(); ++i) {
771 SGVec2d p = project(gv[i]);
772 glVertex2d(p.x(), p.y());
779 * Round a SGGeod to an arbitrary precision.
780 * For example, passing precision of 0.5 will round to the nearest 0.5 of
781 * a degree in both lat and lon - passing in 3.0 rounds to the nearest 3 degree
782 * multiple, and so on.
784 static SGGeod roundGeod(double precision, const SGGeod& g)
786 double lon = SGMiscd::round(g.getLongitudeDeg() / precision);
787 double lat = SGMiscd::round(g.getLatitudeDeg() / precision);
789 return SGGeod::fromDeg(lon * precision, lat * precision);
792 bool MapWidget::drawLineClipped(const SGVec2d& a, const SGVec2d& b)
794 double minX = SGMiscd::min(a.x(), b.x()),
795 minY = SGMiscd::min(a.y(), b.y()),
796 maxX = SGMiscd::max(a.x(), b.x()),
797 maxY = SGMiscd::max(a.y(), b.y());
799 int hh = _height >> 1, hw = _width >> 1;
801 if ((maxX < -hw) || (minX > hw) || (minY > hh) || (maxY < -hh)) {
805 glVertex2dv(a.data());
806 glVertex2dv(b.data());
810 SGVec2d MapWidget::gridPoint(int ix, int iy)
812 int key = (ix + 0x7fff) | ((iy + 0x7fff) << 16);
813 GridPointCache::iterator it = _gridCache.find(key);
814 if (it != _gridCache.end()) {
818 SGGeod gp = SGGeod::fromDeg(
819 _gridCenter.getLongitudeDeg() + ix * _gridSpacing,
820 _gridCenter.getLatitudeDeg() + iy * _gridSpacing);
822 SGVec2d proj = project(gp);
823 _gridCache[key] = proj;
827 void MapWidget::drawLatLonGrid()
830 _gridCenter = roundGeod(_gridSpacing, _projectionCenter);
836 glColor4f(0.8, 0.8, 0.8, 0.4);
844 for (int x = -ix; x < ix; ++x) {
845 didDraw |= drawLineClipped(gridPoint(x, -iy), gridPoint(x+1, -iy));
846 didDraw |= drawLineClipped(gridPoint(x, iy), gridPoint(x+1, iy));
847 didDraw |= drawLineClipped(gridPoint(x, -iy), gridPoint(x, -iy + 1));
848 didDraw |= drawLineClipped(gridPoint(x, iy), gridPoint(x, iy - 1));
852 for (int y = -iy; y < iy; ++y) {
853 didDraw |= drawLineClipped(gridPoint(-ix, y), gridPoint(-ix, y+1));
854 didDraw |= drawLineClipped(gridPoint(-ix, y), gridPoint(-ix + 1, y));
855 didDraw |= drawLineClipped(gridPoint(ix, y), gridPoint(ix, y+1));
856 didDraw |= drawLineClipped(gridPoint(ix, y), gridPoint(ix - 1, y));
867 void MapWidget::drawGPSData()
869 std::string gpsMode = _gps->getStringValue("mode");
871 SGGeod wp0Geod = SGGeod::fromDeg(
872 _gps->getDoubleValue("wp/wp[0]/longitude-deg"),
873 _gps->getDoubleValue("wp/wp[0]/latitude-deg"));
875 SGGeod wp1Geod = SGGeod::fromDeg(
876 _gps->getDoubleValue("wp/wp[1]/longitude-deg"),
877 _gps->getDoubleValue("wp/wp[1]/latitude-deg"));
880 double gpsTrackDeg = _gps->getDoubleValue("indicated-track-true-deg");
881 double gpsSpeed = _gps->getDoubleValue("indicated-ground-speed-kt");
884 if (gpsSpeed > 3.0) { // only draw track line if valid
886 SGGeodesy::direct(_aircraft, gpsTrackDeg, _drawRangeNm * SG_NM_TO_METER, trackRadial, az2);
888 glColor4f(1.0, 1.0, 0.0, 1.0);
889 glEnable(GL_LINE_STIPPLE);
890 glLineStipple(1, 0x00FF);
891 drawLine(project(_aircraft), project(trackRadial));
892 glDisable(GL_LINE_STIPPLE);
895 if (gpsMode == "dto") {
896 SGVec2d wp0Pos = project(wp0Geod);
897 SGVec2d wp1Pos = project(wp1Geod);
899 glColor4f(1.0, 0.0, 1.0, 1.0);
900 drawLine(wp0Pos, wp1Pos);
904 if (_gps->getBoolValue("scratch/valid")) {
910 class MapAirportFilter : public FGAirport::AirportFilter
913 MapAirportFilter(SGPropertyNode_ptr nd)
915 _heliports = nd->getBoolValue("show-heliports", false);
916 _hardRunwaysOnly = nd->getBoolValue("hard-surfaced-airports", true);
917 _minLengthFt = fgGetDouble("/sim/navdb/min-runway-length-ft", 2000);
920 virtual FGPositioned::Type maxType() const {
921 return _heliports ? FGPositioned::HELIPORT : FGPositioned::AIRPORT;
924 virtual bool passAirport(FGAirport* aApt) const {
925 if (_hardRunwaysOnly) {
926 return aApt->hasHardRunwayOfLengthFt(_minLengthFt);
934 bool _hardRunwaysOnly;
938 void MapWidget::drawAirports()
940 MapAirportFilter af(_root);
941 bool partial = false;
942 FGPositionedList apts = FGPositioned::findWithinRangePartial(_projectionCenter, _drawRangeNm, &af, partial);
943 for (unsigned int i=0; i<apts.size(); ++i) {
944 drawAirport((FGAirport*) apts[i].get());
948 class NavaidFilter : public FGPositioned::Filter
951 NavaidFilter(bool fixesEnabled, bool navaidsEnabled) :
952 _fixes(fixesEnabled),
953 _navaids(navaidsEnabled)
956 virtual bool pass(FGPositioned* aPos) const {
957 if (_fixes && (aPos->type() == FGPositioned::FIX)) {
958 // ignore fixes which end in digits - expirmental
959 if (aPos->ident().length() > 4 && isdigit(aPos->ident()[3]) && isdigit(aPos->ident()[4])) {
967 virtual FGPositioned::Type minType() const {
968 return _fixes ? FGPositioned::FIX : FGPositioned::NDB;
971 virtual FGPositioned::Type maxType() const {
972 return _navaids ? FGPositioned::VOR : FGPositioned::FIX;
976 bool _fixes, _navaids;
979 void MapWidget::drawNavaids()
981 bool fixes = _root->getBoolValue("draw-fixes");
982 NavaidFilter f(fixes, _root->getBoolValue("draw-navaids"));
984 if (f.minType() <= f.maxType()) {
985 FGPositionedList navs = FGPositioned::findWithinRange(_projectionCenter, _drawRangeNm, &f);
988 for (unsigned int i=0; i<navs.size(); ++i) {
989 FGPositioned::Type ty = navs[i]->type();
990 if (ty == FGPositioned::NDB) {
991 drawNDB(false, (FGNavRecord*) navs[i].get());
992 } else if (ty == FGPositioned::VOR) {
993 drawVOR(false, (FGNavRecord*) navs[i].get());
994 } else if (ty == FGPositioned::FIX) {
995 drawFix((FGFix*) navs[i].get());
997 } // of navaid iteration
998 } // of navaids || fixes are drawn test
1001 void MapWidget::drawPOIs()
1003 FGPositioned::TypeFilter f(FGPositioned::COUNTRY);
1004 f.addType(FGPositioned::CITY);
1005 f.addType(FGPositioned::TOWN);
1006 FGPositionedList poi = FGPositioned::findWithinRange(_projectionCenter, _drawRangeNm, &f);
1009 for (unsigned int i=0; i<poi.size(); ++i) {
1010 FGPositioned::Type ty = poi[i]->type();
1011 if (ty == FGPositioned::COUNTRY) {
1012 drawCountries((FGNavRecord*) poi[i].get());
1013 } else if (ty == FGPositioned::CITY) {
1014 drawCities((FGNavRecord*) poi[i].get());
1015 } else if (ty == FGPositioned::TOWN) {
1016 drawTowns((FGNavRecord*) poi[i].get());
1018 } // of navaid iteration
1021 void MapWidget::drawNDB(bool tuned, FGNavRecord* ndb)
1023 SGVec2d pos = project(ndb->geod());
1026 glColor3f(0.0, 1.0, 1.0);
1028 glColor3f(0.0, 0.0, 0.0);
1031 glEnable(GL_LINE_STIPPLE);
1032 glLineStipple(1, 0x00FF);
1033 circleAt(pos, 20, 6);
1034 circleAt(pos, 20, 10);
1035 glDisable(GL_LINE_STIPPLE);
1037 if (validDataForKey(ndb)) {
1038 setAnchorForKey(ndb, pos);
1043 ::snprintf(buffer, 1024, "%s\n%s %3.0fKhz",
1044 ndb->name().c_str(), ndb->ident().c_str(),ndb->get_freq()/100.0);
1046 MapData* d = createDataForKey(ndb);
1048 d->setLabel(ndb->ident());
1050 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 10);
1055 void MapWidget::drawVOR(bool tuned, FGNavRecord* vor)
1057 SGVec2d pos = project(vor->geod());
1059 glColor3f(0.0, 1.0, 1.0);
1061 glColor3f(0.0, 0.0, 1.0);
1064 circleAt(pos, 6, 8);
1066 if (validDataForKey(vor)) {
1067 setAnchorForKey(vor, pos);
1072 ::snprintf(buffer, 1024, "%s\n%s %6.3fMhz",
1073 vor->name().c_str(), vor->ident().c_str(),
1074 vor->get_freq() / 100.0);
1076 MapData* d = createDataForKey(vor);
1078 d->setLabel(vor->ident());
1079 d->setPriority(tuned ? 10000 : 100);
1080 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 12);
1084 void MapWidget::drawFix(FGFix* fix)
1086 SGVec2d pos = project(fix->geod());
1087 glColor3f(0.0, 0.0, 0.0);
1088 circleAt(pos, 3, 6);
1090 if (_cachedZoom > SHOW_DETAIL_ZOOM) {
1091 return; // hide fix labels beyond a certain zoom level
1094 if (validDataForKey(fix)) {
1095 setAnchorForKey(fix, pos);
1099 MapData* d = createDataForKey(fix);
1100 d->setLabel(fix->ident());
1102 d->setOffset(MapData::VALIGN_CENTER | MapData::HALIGN_LEFT, 10);
1106 void MapWidget::drawNavRadio(SGPropertyNode_ptr radio)
1108 if (!radio || radio->getBoolValue("slaved-to-gps", false)
1109 || !radio->getBoolValue("in-range", false)) {
1113 if (radio->getBoolValue("nav-loc", false)) {
1114 drawTunedLocalizer(radio);
1117 // identify the tuned station - unfortunately we don't get lat/lon directly,
1118 // need to do the frequency search again
1119 double mhz = radio->getDoubleValue("frequencies/selected-mhz", 0.0);
1121 FGNavRecord* nav = FGNavList::findByFreq(mhz, _aircraft,
1122 FGNavList::navFilter());
1123 if (!nav || (nav->ident() != radio->getStringValue("nav-id"))) {
1124 // mismatch between navradio selection logic and ours!
1131 SGVec2d pos = project(nav->geod());
1134 double trueRadial = radio->getDoubleValue("radials/target-radial-deg");
1135 SGGeodesy::direct(nav->geod(), trueRadial, nav->get_range() * SG_NM_TO_METER, range, az2);
1136 SGVec2d prange = project(range);
1138 SGVec2d norm = normalize(prange - pos);
1139 SGVec2d perp(norm.y(), -norm.x());
1141 circleAt(pos, 64, length(prange - pos));
1142 drawLine(pos, prange);
1144 // draw to/from arrows
1145 SGVec2d midPoint = (pos + prange) * 0.5;
1146 if (radio->getBoolValue("from-flag")) {
1152 SGVec2d arrowB = midPoint - (norm * sz) + (perp * sz);
1153 SGVec2d arrowC = midPoint - (norm * sz) - (perp * sz);
1154 drawLine(midPoint, arrowB);
1155 drawLine(arrowB, arrowC);
1156 drawLine(arrowC, midPoint);
1158 drawLine(pos, (2 * pos) - prange); // reciprocal radial
1161 void MapWidget::drawTunedLocalizer(SGPropertyNode_ptr radio)
1163 double mhz = radio->getDoubleValue("frequencies/selected-mhz", 0.0);
1164 FGNavRecord* loc = FGNavList::findByFreq(mhz, _aircraft, FGNavList::locFilter());
1165 if (!loc || (loc->ident() != radio->getStringValue("nav-id"))) {
1166 // mismatch between navradio selection logic and ours!
1170 if (loc->runway()) {
1171 drawILS(true, loc->runway());
1175 void MapWidget::drawCountries(FGNavRecord* rec)
1177 if (_cachedZoom < 9) {
1178 return; // hide labels beyond a certain zoom level
1181 SGVec2d pos = project(rec->geod());
1182 glColor3f(1.0, 1.0, 0.0);
1184 circleAt(pos, 4, 10);
1186 if (validDataForKey(rec)) {
1187 setAnchorForKey(rec, pos);
1192 ::snprintf(buffer, 1024, "%s",
1193 rec->name().c_str());
1195 MapData* d = createDataForKey(rec);
1196 d->setPriority(200);
1197 d->setLabel(rec->ident());
1199 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 10);
1204 void MapWidget::drawCities(FGNavRecord* rec)
1206 if (_cachedZoom > SHOW_DETAIL_ZOOM) {
1207 return; // hide labels beyond a certain zoom level
1210 SGVec2d pos = project(rec->geod());
1211 glColor3f(0.0, 1.0, 0.0);
1213 circleAt(pos, 4, 8);
1215 if (validDataForKey(rec)) {
1216 setAnchorForKey(rec, pos);
1221 ::snprintf(buffer, 1024, "%s",
1222 rec->name().c_str());
1224 MapData* d = createDataForKey(rec);
1226 d->setLabel(rec->ident());
1228 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 10);
1233 void MapWidget::drawTowns(FGNavRecord* rec)
1235 if (_cachedZoom > SHOW_DETAIL2_ZOOM) {
1236 return; // hide labels beyond a certain zoom level
1239 SGVec2d pos = project(rec->geod());
1240 glColor3f(0.2, 1.0, 0.0);
1242 circleAt(pos, 4, 5);
1244 if (validDataForKey(rec)) {
1245 setAnchorForKey(rec, pos);
1250 ::snprintf(buffer, 1024, "%s",
1251 rec->name().c_str());
1253 MapData* d = createDataForKey(rec);
1255 d->setLabel(rec->ident());
1257 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 10);
1263 void MapWidget::drawObstacle(FGPositioned* obs)
1265 SGVec2d pos = project(obs->geod());
1266 glColor3f(0.0, 0.0, 0.0);
1268 drawLine(pos, pos + SGVec2d());
1272 void MapWidget::drawAirport(FGAirport* apt)
1274 // draw tower location
1275 SGVec2d towerPos = project(apt->getTowerLocation());
1277 if (_cachedZoom <= SHOW_DETAIL_ZOOM) {
1278 glColor3f(1.0, 1.0, 1.0);
1281 drawLine(towerPos + SGVec2d(3, 0), towerPos + SGVec2d(3, 10));
1282 drawLine(towerPos + SGVec2d(-3, 0), towerPos + SGVec2d(-3, 10));
1283 drawLine(towerPos + SGVec2d(-6, 20), towerPos + SGVec2d(-3, 10));
1284 drawLine(towerPos + SGVec2d(6, 20), towerPos + SGVec2d(3, 10));
1285 drawLine(towerPos + SGVec2d(-6, 20), towerPos + SGVec2d(6, 20));
1288 if (validDataForKey(apt)) {
1289 setAnchorForKey(apt, towerPos);
1292 ::snprintf(buffer, 1024, "%s\n%s",
1293 apt->ident().c_str(), apt->name().c_str());
1295 MapData* d = createDataForKey(apt);
1297 d->setLabel(apt->ident());
1298 d->setPriority(100 + scoreAirportRunways(apt));
1299 d->setOffset(MapData::VALIGN_TOP | MapData::HALIGN_CENTER, 6);
1300 d->setAnchor(towerPos);
1303 if (_cachedZoom > SHOW_DETAIL_ZOOM) {
1307 FGRunwayList runways(apt->getRunwaysWithoutReciprocals());
1309 for (unsigned int r=0; r<runways.size(); ++r) {
1310 drawRunwayPre(runways[r]);
1313 for (unsigned int r=0; r<runways.size(); ++r) {
1314 FGRunway* rwy = runways[r];
1318 drawILS(false, rwy);
1321 if (rwy->reciprocalRunway()) {
1322 FGRunway* recip = rwy->reciprocalRunway();
1324 drawILS(false, recip);
1329 for (unsigned int r=0; r<apt->numHelipads(); ++r) {
1330 FGHelipad* hp = apt->getHelipadByIndex(r);
1332 } // of runway iteration
1336 int MapWidget::scoreAirportRunways(FGAirport* apt)
1338 bool needHardSurface = _root->getBoolValue("hard-surfaced-airports", true);
1339 double minLength = _root->getDoubleValue("min-runway-length-ft", 2000.0);
1341 FGRunwayList runways(apt->getRunwaysWithoutReciprocals());
1344 for (unsigned int r=0; r<runways.size(); ++r) {
1345 FGRunway* rwy = runways[r];
1346 if (needHardSurface && !rwy->isHardSurface()) {
1350 if (rwy->lengthFt() < minLength) {
1354 int scoreLength = SGMiscd::roundToInt(rwy->lengthFt() / 200.0);
1355 score += scoreLength;
1356 } // of runways iteration
1361 void MapWidget::drawRunwayPre(FGRunway* rwy)
1363 SGVec2d p1 = project(rwy->begin());
1364 SGVec2d p2 = project(rwy->end());
1367 glColor3f(1.0, 0.0, 1.0);
1371 void MapWidget::drawRunway(FGRunway* rwy)
1374 // optionally show active, stopway, etc
1375 // in legend, show published heading and length
1376 // and threshold elevation
1378 SGVec2d p1 = project(rwy->begin());
1379 SGVec2d p2 = project(rwy->end());
1381 glColor3f(1.0, 1.0, 1.0);
1382 SGVec2d inset = normalize(p2 - p1) * 2;
1384 drawLine(p1 + inset, p2 - inset);
1386 if (validDataForKey(rwy)) {
1387 setAnchorForKey(rwy, (p1 + p2) * 0.5);
1392 ::snprintf(buffer, 1024, "%s/%s\n%03d/%03d\n%.0f'",
1393 rwy->ident().c_str(),
1394 rwy->reciprocalRunway()->ident().c_str(),
1395 displayHeading(rwy->headingDeg()),
1396 displayHeading(rwy->reciprocalRunway()->headingDeg()),
1399 MapData* d = createDataForKey(rwy);
1401 d->setLabel(rwy->ident() + "/" + rwy->reciprocalRunway()->ident());
1403 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 12);
1404 d->setAnchor((p1 + p2) * 0.5);
1407 void MapWidget::drawILS(bool tuned, FGRunway* rwy)
1409 // arrow, tip centered on the landing threshold
1410 // using LOC transmitter position would be more accurate, but
1411 // is visually cluttered
1412 // arrow width is based upon the computed localizer width
1414 FGNavRecord* loc = rwy->ILS();
1415 double halfBeamWidth = loc->localizerWidth() * 0.5;
1416 SGVec2d t = project(rwy->threshold());
1418 double rangeM = loc->get_range() * SG_NM_TO_METER;
1419 double radial = loc->get_multiuse();
1420 SG_NORMALIZE_RANGE(radial, 0.0, 360.0);
1423 // compute the three end points at the widge end of the arrow
1424 SGGeodesy::direct(loc->geod(), radial, -rangeM, locEnd, az2);
1425 SGVec2d endCentre = project(locEnd);
1427 SGGeodesy::direct(loc->geod(), radial + halfBeamWidth, -rangeM * 1.1, locEnd, az2);
1428 SGVec2d endR = project(locEnd);
1430 SGGeodesy::direct(loc->geod(), radial - halfBeamWidth, -rangeM * 1.1, locEnd, az2);
1431 SGVec2d endL = project(locEnd);
1433 // outline two triangles
1436 glColor3f(0.0, 1.0, 1.0);
1438 glColor3f(0.0, 0.0, 1.0);
1441 glBegin(GL_LINE_LOOP);
1442 glVertex2dv(t.data());
1443 glVertex2dv(endCentre.data());
1444 glVertex2dv(endL.data());
1446 glBegin(GL_LINE_LOOP);
1447 glVertex2dv(t.data());
1448 glVertex2dv(endCentre.data());
1449 glVertex2dv(endR.data());
1452 if (validDataForKey(loc)) {
1453 setAnchorForKey(loc, endR);
1458 ::snprintf(buffer, 1024, "%s\n%s\n%03d - %3.2fMHz",
1459 loc->ident().c_str(), loc->name().c_str(),
1460 displayHeading(radial),
1461 loc->get_freq()/100.0);
1463 MapData* d = createDataForKey(loc);
1465 d->setLabel(loc->ident());
1467 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 10);
1471 void MapWidget::drawTraffic()
1473 if (!_root->getBoolValue("draw-traffic")) {
1477 if (_cachedZoom > SHOW_DETAIL_ZOOM) {
1481 const SGPropertyNode* ai = fgGetNode("/ai/models", true);
1483 for (int i = 0; i < ai->nChildren(); ++i) {
1484 const SGPropertyNode *model = ai->getChild(i);
1485 // skip bad or dead entries
1486 if (!model || model->getIntValue("id", -1) == -1) {
1490 const std::string& name(model->getName());
1491 SGGeod pos = SGGeod::fromDegFt(
1492 model->getDoubleValue("position/longitude-deg"),
1493 model->getDoubleValue("position/latitude-deg"),
1494 model->getDoubleValue("position/altitude-ft"));
1496 double dist = SGGeodesy::distanceNm(_projectionCenter, pos);
1497 if (dist > _drawRangeNm) {
1501 double heading = model->getDoubleValue("orientation/true-heading-deg");
1502 if ((name == "aircraft") || (name == "multiplayer") ||
1503 (name == "wingman") || (name == "tanker")) {
1504 drawAIAircraft(model, pos, heading);
1505 } else if ((name == "ship") || (name == "carrier") || (name == "escort")) {
1506 drawAIShip(model, pos, heading);
1508 } // of ai/models iteration
1511 void MapWidget::drawHelipad(FGHelipad* hp)
1513 SGVec2d pos = project(hp->geod());
1515 glColor3f(1.0, 0.0, 1.0);
1516 circleAt(pos, 16, 5.0);
1518 if (validDataForKey(hp)) {
1519 setAnchorForKey(hp, pos);
1524 ::snprintf(buffer, 1024, "%s\n%03d\n%.0f'",
1525 hp->ident().c_str(),
1526 displayHeading(hp->headingDeg()),
1529 MapData* d = createDataForKey(hp);
1531 d->setLabel(hp->ident());
1533 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 8);
1537 void MapWidget::drawAIAircraft(const SGPropertyNode* model, const SGGeod& pos, double hdg)
1540 SGVec2d p = project(pos);
1542 glColor3f(0.0, 0.0, 0.0);
1544 circleAt(p, 4, 6.0); // black diamond
1546 // draw heading vector
1547 int speedKts = static_cast<int>(model->getDoubleValue("velocities/true-airspeed-kt"));
1551 const double dt = 15.0 / (3600.0); // 15 seconds look-ahead
1552 double distanceM = speedKts * SG_NM_TO_METER * dt;
1556 SGGeodesy::direct(pos, hdg, distanceM, advance, az2);
1558 drawLine(p, project(advance));
1562 // draw callsign / altitude / speed
1564 ::snprintf(buffer, 1024, "%s\n%d'\n%dkts",
1565 model->getStringValue("callsign", "<>"),
1566 static_cast<int>(pos.getElevationFt() / 50.0) * 50,
1569 MapData* d = getOrCreateDataForKey((void*) model);
1571 d->setLabel(model->getStringValue("callsign", "<>"));
1572 d->setPriority(speedKts > 5 ? 60 : 10); // low priority for parked aircraft
1573 d->setOffset(MapData::VALIGN_CENTER | MapData::HALIGN_LEFT, 10);
1578 void MapWidget::drawAIShip(const SGPropertyNode* model, const SGGeod& pos, double hdg)
1580 SGVec2d p = project(pos);
1582 glColor3f(0.0, 0.0, 0.5);
1584 circleAt(p, 4, 6.0); // blue diamond (to differentiate from aircraft.
1586 // draw heading vector
1587 int speedKts = static_cast<int>(model->getDoubleValue("velocities/speed-kts"));
1591 const double dt = 15.0 / (3600.0); // 15 seconds look-ahead
1592 double distanceM = speedKts * SG_NM_TO_METER * dt;
1596 SGGeodesy::direct(pos, hdg, distanceM, advance, az2);
1598 drawLine(p, project(advance));
1601 // draw callsign / speed
1603 ::snprintf(buffer, 1024, "%s\n%dkts",
1604 model->getStringValue("name", "<>"),
1607 MapData* d = getOrCreateDataForKey((void*) model);
1609 d->setLabel(model->getStringValue("name", "<>"));
1610 d->setPriority(speedKts > 2 ? 30 : 10); // low priority for slow moving ships
1611 d->setOffset(MapData::VALIGN_CENTER | MapData::HALIGN_LEFT, 10);
1615 SGVec2d MapWidget::project(const SGGeod& geod) const
1618 double r = earth_radius_lat(geod.getLatitudeRad());
1620 if (_orthoAzimuthProject) {
1621 // http://mathworld.wolfram.com/OrthographicProjection.html
1622 double cosTheta = cos(geod.getLatitudeRad());
1623 double sinDLambda = sin(geod.getLongitudeRad() - _projectionCenter.getLongitudeRad());
1624 double cosDLambda = cos(geod.getLongitudeRad() - _projectionCenter.getLongitudeRad());
1625 double sinTheta1 = sin(_projectionCenter.getLatitudeRad());
1626 double sinTheta = sin(geod.getLatitudeRad());
1627 double cosTheta1 = cos(_projectionCenter.getLatitudeRad());
1629 p = SGVec2d(cosTheta * sinDLambda,
1630 (cosTheta1 * sinTheta) - (sinTheta1 * cosTheta * cosDLambda)) * r * currentScale();
1633 // Sanson-Flamsteed projection, relative to the projection center
1634 double lonDiff = geod.getLongitudeRad() - _projectionCenter.getLongitudeRad(),
1635 latDiff = geod.getLatitudeRad() - _projectionCenter.getLatitudeRad();
1637 p = SGVec2d(cos(geod.getLatitudeRad()) * lonDiff, latDiff) * r * currentScale();
1641 // rotate as necessary
1642 double cost = cos(_upHeading * SG_DEGREES_TO_RADIANS),
1643 sint = sin(_upHeading * SG_DEGREES_TO_RADIANS);
1644 double rx = cost * p.x() - sint * p.y();
1645 double ry = sint * p.x() + cost * p.y();
1646 return SGVec2d(rx, ry);
1649 SGGeod MapWidget::unproject(const SGVec2d& p) const
1651 // unrotate, if necessary
1652 double cost = cos(-_upHeading * SG_DEGREES_TO_RADIANS),
1653 sint = sin(-_upHeading * SG_DEGREES_TO_RADIANS);
1654 SGVec2d ur(cost * p.x() - sint * p.y(),
1655 sint * p.x() + cost * p.y());
1657 double r = earth_radius_lat(_projectionCenter.getLatitudeRad());
1658 SGVec2d unscaled = ur * (1.0 / (currentScale() * r));
1660 if (_orthoAzimuthProject) {
1661 double phi = length(p);
1662 double c = asin(phi);
1663 double sinTheta1 = sin(_projectionCenter.getLatitudeRad());
1664 double cosTheta1 = cos(_projectionCenter.getLatitudeRad());
1666 double lat = asin(cos(c) * sinTheta1 + ((unscaled.y() * sin(c) * cosTheta1) / phi));
1667 double lon = _projectionCenter.getLongitudeRad() +
1668 atan((unscaled.x()* sin(c)) / (phi * cosTheta1 * cos(c) - unscaled.y() * sinTheta1 * sin(c)));
1669 return SGGeod::fromRad(lon, lat);
1671 double lat = unscaled.y() + _projectionCenter.getLatitudeRad();
1672 double lon = (unscaled.x() / cos(lat)) + _projectionCenter.getLongitudeRad();
1673 return SGGeod::fromRad(lon, lat);
1677 double MapWidget::currentScale() const
1679 return 1.0 / pow(2.0, _cachedZoom);
1682 void MapWidget::circleAt(const SGVec2d& center, int nSides, double r)
1684 glBegin(GL_LINE_LOOP);
1685 double advance = (SGD_PI * 2) / nSides;
1686 glVertex2d(center.x(), center.y() + r);
1688 for (int i=1; i<nSides; ++i) {
1689 glVertex2d(center.x() + (sin(t) * r), center.y() + (cos(t) * r));
1695 void MapWidget::circleAtAlt(const SGVec2d& center, int nSides, double r, double r2)
1697 glBegin(GL_LINE_LOOP);
1698 double advance = (SGD_PI * 2) / nSides;
1699 glVertex2d(center.x(), center.y() + r);
1701 for (int i=1; i<nSides; ++i) {
1702 double rr = (i%2 == 0) ? r : r2;
1703 glVertex2d(center.x() + (sin(t) * rr), center.y() + (cos(t) * rr));
1709 void MapWidget::drawLine(const SGVec2d& p1, const SGVec2d& p2)
1712 glVertex2dv(p1.data());
1713 glVertex2dv(p2.data());
1717 void MapWidget::drawLegendBox(const SGVec2d& pos, const std::string& t)
1719 std::vector<std::string> lines(simgear::strutils::split(t, "\n"));
1720 const int LINE_LEADING = 4;
1721 const int MARGIN = 4;
1724 int maxWidth = -1, totalHeight = 0;
1725 int lineHeight = legendFont.getStringHeight();
1727 for (unsigned int ln=0; ln<lines.size(); ++ln) {
1728 totalHeight += lineHeight;
1730 totalHeight += LINE_LEADING;
1733 int lw = legendFont.getStringWidth(lines[ln].c_str());
1734 maxWidth = std::max(maxWidth, lw);
1735 } // of line measurement
1738 return; // all lines are empty, don't draw
1741 totalHeight += MARGIN * 2;
1746 box.min[1] = -totalHeight;
1747 box.max[0] = maxWidth + (MARGIN * 2);
1750 box.draw (pos.x(), pos.y(), PUSTYLE_DROPSHADOW, colour, FALSE, border);
1753 int xPos = pos.x() + MARGIN;
1754 int yPos = pos.y() - (lineHeight + MARGIN);
1755 glColor3f(0.8, 0.8, 0.8);
1757 for (unsigned int ln=0; ln<lines.size(); ++ln) {
1758 legendFont.drawString(lines[ln].c_str(), xPos, yPos);
1759 yPos -= lineHeight + LINE_LEADING;
1763 void MapWidget::drawData()
1765 std::sort(_dataQueue.begin(), _dataQueue.end(), MapData::order);
1767 int hw = _width >> 1,
1769 puBox visBox(makePuBox(-hw, -hh, _width, _height));
1773 std::vector<MapData*> drawQueue;
1775 bool drawData = _root->getBoolValue("draw-data");
1776 const int MAX_DRAW_DATA = 25;
1777 const int MAX_DRAW = 50;
1779 for (; (d < _dataQueue.size()) && (drawn < MAX_DRAW); ++d) {
1780 MapData* md = _dataQueue[d];
1781 md->setDataVisible(drawData);
1783 if (md->isClipped(visBox)) {
1787 if (md->overlaps(drawQueue)) {
1788 if (drawData) { // overlapped with data, let's try just the label
1789 md->setDataVisible(false);
1790 if (md->overlaps(drawQueue)) {
1796 } // of overlaps case
1798 drawQueue.push_back(md);
1800 if (drawData && (drawn >= MAX_DRAW_DATA)) {
1805 // draw lowest-priority first, so higher-priorty items appear on top
1806 std::vector<MapData*>::reverse_iterator r;
1807 for (r = drawQueue.rbegin(); r!= drawQueue.rend(); ++r) {
1812 KeyDataMap::iterator it = _mapData.begin();
1813 for (; it != _mapData.end(); ) {
1815 if (it->second->isExpired()) {
1817 KeyDataMap::iterator cur = it++;
1818 _mapData.erase(cur);
1822 } // of expiry iteration
1825 bool MapWidget::validDataForKey(void* key)
1827 KeyDataMap::iterator it = _mapData.find(key);
1828 if (it == _mapData.end()) {
1829 return false; // no valid data for the key!
1832 it->second->resetAge(); // mark data as valid this frame
1833 _dataQueue.push_back(it->second);
1837 void MapWidget::setAnchorForKey(void* key, const SGVec2d& anchor)
1839 KeyDataMap::iterator it = _mapData.find(key);
1840 if (it == _mapData.end()) {
1841 throw sg_exception("no valid data for key!");
1844 it->second->setAnchor(anchor);
1847 MapData* MapWidget::getOrCreateDataForKey(void* key)
1849 KeyDataMap::iterator it = _mapData.find(key);
1850 if (it == _mapData.end()) {
1851 return createDataForKey(key);
1854 it->second->resetAge(); // mark data as valid this frame
1855 _dataQueue.push_back(it->second);
1859 MapData* MapWidget::createDataForKey(void* key)
1861 KeyDataMap::iterator it = _mapData.find(key);
1862 if (it != _mapData.end()) {
1863 throw sg_exception("duplicate data requested for key!");
1866 MapData* d = new MapData(0);
1868 _dataQueue.push_back(d);
1873 void MapWidget::clearData()
1875 KeyDataMap::iterator it = _mapData.begin();
1876 for (; it != _mapData.end(); ++it) {
1883 int MapWidget::displayHeading(double h) const
1885 if (_magneticHeadings) {
1886 h -= _magVar->get_magvar() * SG_RADIANS_TO_DEGREES;
1889 SG_NORMALIZE_RANGE(h, 0.0, 360.0);
1890 return SGMiscd::roundToInt(h);