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/simple.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 CURSOR_PAN_STEP = 32;
380 MapWidget::MapWidget(int x, int y, int maxX, int maxY) :
381 puObject(x,y,maxX, maxY)
383 _route = static_cast<FGRouteMgr*>(globals->get_subsystem("route-manager"));
384 _gps = fgGetNode("/instrumentation/gps");
389 _orthoAzimuthProject = false;
391 MapData::setFont(legendFont);
392 MapData::setPalette(colour);
394 _magVar = new SGMagVar();
397 MapWidget::~MapWidget()
403 void MapWidget::setProperty(SGPropertyNode_ptr prop)
406 int zoom = _root->getIntValue("zoom", -1);
408 _root->setIntValue("zoom", 6); // default zoom
411 // expose MAX_ZOOM to the UI
412 _root->setIntValue("max-zoom", MAX_ZOOM);
413 _root->setBoolValue("centre-on-aircraft", true);
414 _root->setBoolValue("draw-data", false);
415 _root->setBoolValue("draw-flight-history", false);
416 _root->setBoolValue("magnetic-headings", true);
419 void MapWidget::setSize(int w, int h)
421 puObject::setSize(w, h);
428 void MapWidget::doHit( int button, int updown, int x, int y )
430 puObject::doHit(button, updown, x, y);
431 if (updown == PU_DRAG) {
436 if (button == 3) { // mouse-wheel up
438 } else if (button == 4) { // mouse-wheel down
442 if (button != active_mouse_button) {
446 _hitLocation = SGVec2d(x - abox.min[0], y - abox.min[1]);
448 if (updown == PU_UP) {
449 puDeactivateWidget();
450 } else if (updown == PU_DOWN) {
451 puSetActiveWidget(this, x, y);
453 if (fgGetKeyModifiers() & KEYMOD_CTRL) {
454 _clickGeod = unproject(_hitLocation - SGVec2d(_width>>1, _height>>1));
459 void MapWidget::handlePan(int x, int y)
461 SGVec2d delta = SGVec2d(x, y) - _hitLocation;
463 _hitLocation = SGVec2d(x,y);
466 int MapWidget::checkKey (int key, int updown )
468 if ((updown == PU_UP) || !isVisible () || !isActive () || (window != puGetWindow())) {
476 pan(SGVec2d(0, -CURSOR_PAN_STEP));
480 pan(SGVec2d(0, CURSOR_PAN_STEP));
484 pan(SGVec2d(CURSOR_PAN_STEP, 0));
488 pan(SGVec2d(-CURSOR_PAN_STEP, 0));
507 void MapWidget::pan(const SGVec2d& delta)
510 _projectionCenter = unproject(-delta);
513 int MapWidget::zoom() const
515 int z = _root->getIntValue("zoom");
516 SG_CLAMP_RANGE(z, 0, MAX_ZOOM);
520 void MapWidget::zoomIn()
522 if (zoom() >= MAX_ZOOM) {
526 _root->setIntValue("zoom", zoom() + 1);
529 void MapWidget::zoomOut()
535 _root->setIntValue("zoom", zoom() - 1);
538 void MapWidget::draw(int dx, int dy)
540 _aircraft = globals->get_aircraft_position();
542 bool mag = _root->getBoolValue("magnetic-headings");
543 if (mag != _magneticHeadings) {
544 clearData(); // flush cached data text, since it often includes heading
545 _magneticHeadings = mag;
549 _root->setBoolValue("centre-on-aircraft", false);
552 else if (_root->getBoolValue("centre-on-aircraft")) {
553 _projectionCenter = _aircraft;
556 double julianDate = globals->get_time_params()->getJD();
557 _magVar->update(_projectionCenter, julianDate);
559 bool aircraftUp = _root->getBoolValue("aircraft-heading-up");
561 _upHeading = fgGetDouble("/orientation/heading-deg");
566 _cachedZoom = MAX_ZOOM - zoom();
567 SGGeod topLeft = unproject(SGVec2d(_width/2, _height/2));
568 // compute draw range, including a fudge factor for ILSs and other 'long'
570 _drawRangeNm = SGGeodesy::distanceNm(_projectionCenter, topLeft) + 10.0;
572 // drawing operations
573 GLint sx = (int) abox.min[0],
574 sy = (int) abox.min[1];
575 glScissor(dx + sx, dy + sy, _width, _height);
576 glEnable(GL_SCISSOR_TEST);
578 glMatrixMode(GL_MODELVIEW);
580 // cetere drawing about the widget center (which is also the
581 // projection centre)
582 glTranslated(dx + sx + (_width/2), dy + sy + (_height/2), 0.0);
587 int textHeight = legendFont.getStringHeight() + 5;
590 SGVec2d loc = project(_aircraft);
591 glColor3f(1.0, 1.0, 1.0);
592 drawLine(loc, SGVec2d(loc.x(), (_height / 2) - textHeight));
595 if (_magneticHeadings) {
596 displayHdg = (int) fgGetDouble("/orientation/heading-magnetic-deg");
598 displayHdg = (int) _upHeading;
601 double y = (_height / 2) - textHeight;
603 ::snprintf(buf, 16, "%d", displayHdg);
604 int sw = legendFont.getStringWidth(buf);
605 legendFont.drawString(buf, loc.x() - sw/2, y);
612 drawNavRadio(fgGetNode("/instrumentation/nav[0]", false));
613 drawNavRadio(fgGetNode("/instrumentation/nav[1]", false));
614 paintAircraftLocation(_aircraft);
622 glDisable(GL_SCISSOR_TEST);
625 void MapWidget::paintRuler()
627 if (_clickGeod == SGGeod()) {
631 SGVec2d acftPos = project(_aircraft);
632 SGVec2d clickPos = project(_clickGeod);
634 glColor4f(0.0, 1.0, 1.0, 0.6);
635 drawLine(acftPos, clickPos);
637 circleAtAlt(clickPos, 8, 10, 5);
639 double dist, az, az2;
640 SGGeodesy::inverse(_aircraft, _clickGeod, az, az2, dist);
642 ::snprintf(buffer, 1024, "%03d/%.1fnm",
643 displayHeading(az), dist * SG_METER_TO_NM);
645 MapData* d = getOrCreateDataForKey((void*) RULER_LEGEND_KEY);
647 d->setAnchor(clickPos);
648 d->setOffset(MapData::VALIGN_TOP | MapData::HALIGN_CENTER, 15);
649 d->setPriority(20000);
654 void MapWidget::paintAircraftLocation(const SGGeod& aircraftPos)
656 SGVec2d loc = project(aircraftPos);
658 double hdg = fgGetDouble("/orientation/heading-deg");
661 glColor4f(1.0, 1.0, 0.0, 1.0);
663 glTranslated(loc.x(), loc.y(), 0.0);
664 glRotatef(hdg - _upHeading, 0.0, 0.0, -1.0);
666 const SGVec2d wingspan(12, 0);
667 const SGVec2d nose(0, 8);
668 const SGVec2d tail(0, -14);
669 const SGVec2d tailspan(4,0);
671 drawLine(-wingspan, wingspan);
672 drawLine(nose, tail);
673 drawLine(tail - tailspan, tail + tailspan);
679 void MapWidget::paintRoute()
681 if (_route->numWaypts() < 2) {
685 RoutePath path(_route->flightPlan());
687 // first pass, draw the actual lines
690 for (int w=0; w<_route->numWaypts(); ++w) {
691 SGGeodVec gv(path.pathForIndex(w));
696 if (w < _route->currentIndex()) {
697 glColor4f(0.5, 0.5, 0.5, 0.7);
699 glColor4f(1.0, 0.0, 1.0, 1.0);
702 flightgear::WayptRef wpt(_route->wayptAtIndex(w));
703 if (wpt->flag(flightgear::WPT_MISS)) {
704 glEnable(GL_LINE_STIPPLE);
705 glLineStipple(1, 0x00FF);
708 glBegin(GL_LINE_STRIP);
709 for (unsigned int i=0; i<gv.size(); ++i) {
710 SGVec2d p = project(gv[i]);
711 glVertex2d(p.x(), p.y());
715 glDisable(GL_LINE_STIPPLE);
719 // second pass, draw waypoint symbols and data
720 for (int w=0; w < _route->numWaypts(); ++w) {
721 flightgear::WayptRef wpt(_route->wayptAtIndex(w));
722 SGGeod g = path.positionForIndex(w);
724 continue; // Vectors or similar
727 SGVec2d p = project(g);
728 glColor4f(1.0, 0.0, 1.0, 1.0);
729 circleAtAlt(p, 8, 12, 5);
731 std::ostringstream legend;
732 legend << wpt->ident();
733 if (wpt->altitudeRestriction() != flightgear::RESTRICT_NONE) {
734 legend << '\n' << SGMiscd::roundToInt(wpt->altitudeFt()) << '\'';
737 if (wpt->speedRestriction() == flightgear::SPEED_RESTRICT_MACH) {
738 legend << '\n' << wpt->speedMach() << "M";
739 } else if (wpt->speedRestriction() != flightgear::RESTRICT_NONE) {
740 legend << '\n' << SGMiscd::roundToInt(wpt->speedKts()) << "Kts";
743 MapData* d = getOrCreateDataForKey(reinterpret_cast<void*>(w * 2));
744 d->setText(legend.str());
745 d->setLabel(wpt->ident());
747 d->setOffset(MapData::VALIGN_TOP | MapData::HALIGN_CENTER, 15);
748 d->setPriority(w < _route->currentIndex() ? 9000 : 12000);
750 } // of second waypoint iteration
753 void MapWidget::drawFlightHistory()
755 FGFlightHistory* history = (FGFlightHistory*) globals->get_subsystem("history");
756 if (!history || !_root->getBoolValue("draw-flight-history")) {
760 // first pass, draw the actual lines
763 SGGeodVec gv(history->pathForHistory());
764 glColor4f(0.0, 0.0, 1.0, 0.7);
766 glBegin(GL_LINE_STRIP);
767 for (unsigned int i=0; i<gv.size(); ++i) {
768 SGVec2d p = project(gv[i]);
769 glVertex2d(p.x(), p.y());
776 * Round a SGGeod to an arbitrary precision.
777 * For example, passing precision of 0.5 will round to the nearest 0.5 of
778 * a degree in both lat and lon - passing in 3.0 rounds to the nearest 3 degree
779 * multiple, and so on.
781 static SGGeod roundGeod(double precision, const SGGeod& g)
783 double lon = SGMiscd::round(g.getLongitudeDeg() / precision);
784 double lat = SGMiscd::round(g.getLatitudeDeg() / precision);
786 return SGGeod::fromDeg(lon * precision, lat * precision);
789 bool MapWidget::drawLineClipped(const SGVec2d& a, const SGVec2d& b)
791 double minX = SGMiscd::min(a.x(), b.x()),
792 minY = SGMiscd::min(a.y(), b.y()),
793 maxX = SGMiscd::max(a.x(), b.x()),
794 maxY = SGMiscd::max(a.y(), b.y());
796 int hh = _height >> 1, hw = _width >> 1;
798 if ((maxX < -hw) || (minX > hw) || (minY > hh) || (maxY < -hh)) {
802 glVertex2dv(a.data());
803 glVertex2dv(b.data());
807 SGVec2d MapWidget::gridPoint(int ix, int iy)
809 int key = (ix + 0x7fff) | ((iy + 0x7fff) << 16);
810 GridPointCache::iterator it = _gridCache.find(key);
811 if (it != _gridCache.end()) {
815 SGGeod gp = SGGeod::fromDeg(
816 _gridCenter.getLongitudeDeg() + ix * _gridSpacing,
817 _gridCenter.getLatitudeDeg() + iy * _gridSpacing);
819 SGVec2d proj = project(gp);
820 _gridCache[key] = proj;
824 void MapWidget::drawLatLonGrid()
827 _gridCenter = roundGeod(_gridSpacing, _projectionCenter);
833 glColor4f(0.8, 0.8, 0.8, 0.4);
841 for (int x = -ix; x < ix; ++x) {
842 didDraw |= drawLineClipped(gridPoint(x, -iy), gridPoint(x+1, -iy));
843 didDraw |= drawLineClipped(gridPoint(x, iy), gridPoint(x+1, iy));
844 didDraw |= drawLineClipped(gridPoint(x, -iy), gridPoint(x, -iy + 1));
845 didDraw |= drawLineClipped(gridPoint(x, iy), gridPoint(x, iy - 1));
849 for (int y = -iy; y < iy; ++y) {
850 didDraw |= drawLineClipped(gridPoint(-ix, y), gridPoint(-ix, y+1));
851 didDraw |= drawLineClipped(gridPoint(-ix, y), gridPoint(-ix + 1, y));
852 didDraw |= drawLineClipped(gridPoint(ix, y), gridPoint(ix, y+1));
853 didDraw |= drawLineClipped(gridPoint(ix, y), gridPoint(ix - 1, y));
864 void MapWidget::drawGPSData()
866 std::string gpsMode = _gps->getStringValue("mode");
868 SGGeod wp0Geod = SGGeod::fromDeg(
869 _gps->getDoubleValue("wp/wp[0]/longitude-deg"),
870 _gps->getDoubleValue("wp/wp[0]/latitude-deg"));
872 SGGeod wp1Geod = SGGeod::fromDeg(
873 _gps->getDoubleValue("wp/wp[1]/longitude-deg"),
874 _gps->getDoubleValue("wp/wp[1]/latitude-deg"));
877 double gpsTrackDeg = _gps->getDoubleValue("indicated-track-true-deg");
878 double gpsSpeed = _gps->getDoubleValue("indicated-ground-speed-kt");
881 if (gpsSpeed > 3.0) { // only draw track line if valid
883 SGGeodesy::direct(_aircraft, gpsTrackDeg, _drawRangeNm * SG_NM_TO_METER, trackRadial, az2);
885 glColor4f(1.0, 1.0, 0.0, 1.0);
886 glEnable(GL_LINE_STIPPLE);
887 glLineStipple(1, 0x00FF);
888 drawLine(project(_aircraft), project(trackRadial));
889 glDisable(GL_LINE_STIPPLE);
892 if (gpsMode == "dto") {
893 SGVec2d wp0Pos = project(wp0Geod);
894 SGVec2d wp1Pos = project(wp1Geod);
896 glColor4f(1.0, 0.0, 1.0, 1.0);
897 drawLine(wp0Pos, wp1Pos);
901 if (_gps->getBoolValue("scratch/valid")) {
907 class MapAirportFilter : public FGAirport::AirportFilter
910 MapAirportFilter(SGPropertyNode_ptr nd)
912 _heliports = nd->getBoolValue("show-heliports", false);
913 _hardRunwaysOnly = nd->getBoolValue("hard-surfaced-airports", true);
914 _minLengthFt = fgGetDouble("/sim/navdb/min-runway-length-ft", 2000);
917 virtual FGPositioned::Type maxType() const {
918 return _heliports ? FGPositioned::HELIPORT : FGPositioned::AIRPORT;
921 virtual bool passAirport(FGAirport* aApt) const {
922 if (_hardRunwaysOnly) {
923 return aApt->hasHardRunwayOfLengthFt(_minLengthFt);
931 bool _hardRunwaysOnly;
935 void MapWidget::drawAirports()
937 MapAirportFilter af(_root);
938 bool partial = false;
939 FGPositioned::List apts = FGPositioned::findWithinRangePartial(_projectionCenter, _drawRangeNm, &af, partial);
940 for (unsigned int i=0; i<apts.size(); ++i) {
941 drawAirport((FGAirport*) apts[i].get());
945 class NavaidFilter : public FGPositioned::Filter
948 NavaidFilter(bool fixesEnabled, bool navaidsEnabled) :
949 _fixes(fixesEnabled),
950 _navaids(navaidsEnabled)
953 virtual bool pass(FGPositioned* aPos) const {
954 if (_fixes && (aPos->type() == FGPositioned::FIX)) {
955 // ignore fixes which end in digits - expirmental
956 if (aPos->ident().length() > 4 && isdigit(aPos->ident()[3]) && isdigit(aPos->ident()[4])) {
964 virtual FGPositioned::Type minType() const {
965 return _fixes ? FGPositioned::FIX : FGPositioned::NDB;
968 virtual FGPositioned::Type maxType() const {
969 return _navaids ? FGPositioned::VOR : FGPositioned::FIX;
973 bool _fixes, _navaids;
976 void MapWidget::drawNavaids()
978 bool fixes = _root->getBoolValue("draw-fixes");
979 NavaidFilter f(fixes, _root->getBoolValue("draw-navaids"));
981 if (f.minType() <= f.maxType()) {
982 FGPositioned::List navs = FGPositioned::findWithinRange(_projectionCenter, _drawRangeNm, &f);
985 for (unsigned int i=0; i<navs.size(); ++i) {
986 FGPositioned::Type ty = navs[i]->type();
987 if (ty == FGPositioned::NDB) {
988 drawNDB(false, (FGNavRecord*) navs[i].get());
989 } else if (ty == FGPositioned::VOR) {
990 drawVOR(false, (FGNavRecord*) navs[i].get());
991 } else if (ty == FGPositioned::FIX) {
992 drawFix((FGFix*) navs[i].get());
994 } // of navaid iteration
995 } // of navaids || fixes are drawn test
998 void MapWidget::drawNDB(bool tuned, FGNavRecord* ndb)
1000 SGVec2d pos = project(ndb->geod());
1003 glColor3f(0.0, 1.0, 1.0);
1005 glColor3f(0.0, 0.0, 0.0);
1008 glEnable(GL_LINE_STIPPLE);
1009 glLineStipple(1, 0x00FF);
1010 circleAt(pos, 20, 6);
1011 circleAt(pos, 20, 10);
1012 glDisable(GL_LINE_STIPPLE);
1014 if (validDataForKey(ndb)) {
1015 setAnchorForKey(ndb, pos);
1020 ::snprintf(buffer, 1024, "%s\n%s %3.0fKhz",
1021 ndb->name().c_str(), ndb->ident().c_str(),ndb->get_freq()/100.0);
1023 MapData* d = createDataForKey(ndb);
1025 d->setLabel(ndb->ident());
1027 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 10);
1032 void MapWidget::drawVOR(bool tuned, FGNavRecord* vor)
1034 SGVec2d pos = project(vor->geod());
1036 glColor3f(0.0, 1.0, 1.0);
1038 glColor3f(0.0, 0.0, 1.0);
1041 circleAt(pos, 6, 8);
1043 if (validDataForKey(vor)) {
1044 setAnchorForKey(vor, pos);
1049 ::snprintf(buffer, 1024, "%s\n%s %6.3fMhz",
1050 vor->name().c_str(), vor->ident().c_str(),
1051 vor->get_freq() / 100.0);
1053 MapData* d = createDataForKey(vor);
1055 d->setLabel(vor->ident());
1056 d->setPriority(tuned ? 10000 : 100);
1057 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 12);
1061 void MapWidget::drawFix(FGFix* fix)
1063 SGVec2d pos = project(fix->geod());
1064 glColor3f(0.0, 0.0, 0.0);
1065 circleAt(pos, 3, 6);
1067 if (_cachedZoom > SHOW_DETAIL_ZOOM) {
1068 return; // hide fix labels beyond a certain zoom level
1071 if (validDataForKey(fix)) {
1072 setAnchorForKey(fix, pos);
1076 MapData* d = createDataForKey(fix);
1077 d->setLabel(fix->ident());
1079 d->setOffset(MapData::VALIGN_CENTER | MapData::HALIGN_LEFT, 10);
1083 void MapWidget::drawNavRadio(SGPropertyNode_ptr radio)
1085 if (!radio || radio->getBoolValue("slaved-to-gps", false)
1086 || !radio->getBoolValue("in-range", false)) {
1090 if (radio->getBoolValue("nav-loc", false)) {
1091 drawTunedLocalizer(radio);
1094 // identify the tuned station - unfortunately we don't get lat/lon directly,
1095 // need to do the frequency search again
1096 double mhz = radio->getDoubleValue("frequencies/selected-mhz", 0.0);
1098 FGNavRecord* nav = FGNavList::findByFreq(mhz, _aircraft,
1099 FGNavList::navFilter());
1100 if (!nav || (nav->ident() != radio->getStringValue("nav-id"))) {
1101 // mismatch between navradio selection logic and ours!
1108 SGVec2d pos = project(nav->geod());
1111 double trueRadial = radio->getDoubleValue("radials/target-radial-deg");
1112 SGGeodesy::direct(nav->geod(), trueRadial, nav->get_range() * SG_NM_TO_METER, range, az2);
1113 SGVec2d prange = project(range);
1115 SGVec2d norm = normalize(prange - pos);
1116 SGVec2d perp(norm.y(), -norm.x());
1118 circleAt(pos, 64, length(prange - pos));
1119 drawLine(pos, prange);
1121 // draw to/from arrows
1122 SGVec2d midPoint = (pos + prange) * 0.5;
1123 if (radio->getBoolValue("from-flag")) {
1129 SGVec2d arrowB = midPoint - (norm * sz) + (perp * sz);
1130 SGVec2d arrowC = midPoint - (norm * sz) - (perp * sz);
1131 drawLine(midPoint, arrowB);
1132 drawLine(arrowB, arrowC);
1133 drawLine(arrowC, midPoint);
1135 drawLine(pos, (2 * pos) - prange); // reciprocal radial
1138 void MapWidget::drawTunedLocalizer(SGPropertyNode_ptr radio)
1140 double mhz = radio->getDoubleValue("frequencies/selected-mhz", 0.0);
1141 FGNavRecord* loc = FGNavList::findByFreq(mhz, _aircraft, FGNavList::locFilter());
1142 if (!loc || (loc->ident() != radio->getStringValue("nav-id"))) {
1143 // mismatch between navradio selection logic and ours!
1147 if (loc->runway()) {
1148 drawILS(true, loc->runway());
1153 void MapWidget::drawObstacle(FGPositioned* obs)
1155 SGVec2d pos = project(obs->geod());
1156 glColor3f(0.0, 0.0, 0.0);
1158 drawLine(pos, pos + SGVec2d());
1162 void MapWidget::drawAirport(FGAirport* apt)
1164 // draw tower location
1165 SGVec2d towerPos = project(apt->getTowerLocation());
1167 if (_cachedZoom <= SHOW_DETAIL_ZOOM) {
1168 glColor3f(1.0, 1.0, 1.0);
1171 drawLine(towerPos + SGVec2d(3, 0), towerPos + SGVec2d(3, 10));
1172 drawLine(towerPos + SGVec2d(-3, 0), towerPos + SGVec2d(-3, 10));
1173 drawLine(towerPos + SGVec2d(-6, 20), towerPos + SGVec2d(-3, 10));
1174 drawLine(towerPos + SGVec2d(6, 20), towerPos + SGVec2d(3, 10));
1175 drawLine(towerPos + SGVec2d(-6, 20), towerPos + SGVec2d(6, 20));
1178 if (validDataForKey(apt)) {
1179 setAnchorForKey(apt, towerPos);
1182 ::snprintf(buffer, 1024, "%s\n%s",
1183 apt->ident().c_str(), apt->name().c_str());
1185 MapData* d = createDataForKey(apt);
1187 d->setLabel(apt->ident());
1188 d->setPriority(100 + scoreAirportRunways(apt));
1189 d->setOffset(MapData::VALIGN_TOP | MapData::HALIGN_CENTER, 6);
1190 d->setAnchor(towerPos);
1193 if (_cachedZoom > SHOW_DETAIL_ZOOM) {
1197 for (unsigned int r=0; r<apt->numRunways(); ++r) {
1198 FGRunway* rwy = apt->getRunwayByIndex(r);
1199 if (!rwy->isReciprocal()) {
1204 for (unsigned int r=0; r<apt->numRunways(); ++r) {
1205 FGRunway* rwy = apt->getRunwayByIndex(r);
1206 if (!rwy->isReciprocal()) {
1211 drawILS(false, rwy);
1215 for (unsigned int r=0; r<apt->numHelipads(); ++r) {
1216 FGHelipad* hp = apt->getHelipadByIndex(r);
1218 } // of runway iteration
1222 int MapWidget::scoreAirportRunways(FGAirport* apt)
1224 bool needHardSurface = _root->getBoolValue("hard-surfaced-airports", true);
1225 double minLength = _root->getDoubleValue("min-runway-length-ft", 2000.0);
1228 unsigned int numRunways(apt->numRunways());
1229 for (unsigned int r=0; r<numRunways; ++r) {
1230 FGRunway* rwy = apt->getRunwayByIndex(r);
1231 if (rwy->isReciprocal()) {
1235 if (needHardSurface && !rwy->isHardSurface()) {
1239 if (rwy->lengthFt() < minLength) {
1243 int scoreLength = SGMiscd::roundToInt(rwy->lengthFt() / 200.0);
1244 score += scoreLength;
1245 } // of runways iteration
1250 void MapWidget::drawRunwayPre(FGRunway* rwy)
1252 SGVec2d p1 = project(rwy->begin());
1253 SGVec2d p2 = project(rwy->end());
1256 glColor3f(1.0, 0.0, 1.0);
1260 void MapWidget::drawRunway(FGRunway* rwy)
1263 // optionally show active, stopway, etc
1264 // in legend, show published heading and length
1265 // and threshold elevation
1267 SGVec2d p1 = project(rwy->begin());
1268 SGVec2d p2 = project(rwy->end());
1270 glColor3f(1.0, 1.0, 1.0);
1271 SGVec2d inset = normalize(p2 - p1) * 2;
1273 drawLine(p1 + inset, p2 - inset);
1275 if (validDataForKey(rwy)) {
1276 setAnchorForKey(rwy, (p1 + p2) * 0.5);
1281 ::snprintf(buffer, 1024, "%s/%s\n%03d/%03d\n%.0f'",
1282 rwy->ident().c_str(),
1283 rwy->reciprocalRunway()->ident().c_str(),
1284 displayHeading(rwy->headingDeg()),
1285 displayHeading(rwy->reciprocalRunway()->headingDeg()),
1288 MapData* d = createDataForKey(rwy);
1290 d->setLabel(rwy->ident() + "/" + rwy->reciprocalRunway()->ident());
1292 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 12);
1293 d->setAnchor((p1 + p2) * 0.5);
1296 void MapWidget::drawILS(bool tuned, FGRunway* rwy)
1298 // arrow, tip centered on the landing threshold
1299 // using LOC transmitter position would be more accurate, but
1300 // is visually cluttered
1301 // arrow width is based upon the computed localizer width
1303 FGNavRecord* loc = rwy->ILS();
1304 double halfBeamWidth = loc->localizerWidth() * 0.5;
1305 SGVec2d t = project(rwy->threshold());
1307 double rangeM = loc->get_range() * SG_NM_TO_METER;
1308 double radial = loc->get_multiuse();
1309 SG_NORMALIZE_RANGE(radial, 0.0, 360.0);
1312 // compute the three end points at the widge end of the arrow
1313 SGGeodesy::direct(loc->geod(), radial, -rangeM, locEnd, az2);
1314 SGVec2d endCentre = project(locEnd);
1316 SGGeodesy::direct(loc->geod(), radial + halfBeamWidth, -rangeM * 1.1, locEnd, az2);
1317 SGVec2d endR = project(locEnd);
1319 SGGeodesy::direct(loc->geod(), radial - halfBeamWidth, -rangeM * 1.1, locEnd, az2);
1320 SGVec2d endL = project(locEnd);
1322 // outline two triangles
1325 glColor3f(0.0, 1.0, 1.0);
1327 glColor3f(0.0, 0.0, 1.0);
1330 glBegin(GL_LINE_LOOP);
1331 glVertex2dv(t.data());
1332 glVertex2dv(endCentre.data());
1333 glVertex2dv(endL.data());
1335 glBegin(GL_LINE_LOOP);
1336 glVertex2dv(t.data());
1337 glVertex2dv(endCentre.data());
1338 glVertex2dv(endR.data());
1341 if (validDataForKey(loc)) {
1342 setAnchorForKey(loc, endR);
1347 ::snprintf(buffer, 1024, "%s\n%s\n%03d - %3.2fMHz",
1348 loc->ident().c_str(), loc->name().c_str(),
1349 displayHeading(radial),
1350 loc->get_freq()/100.0);
1352 MapData* d = createDataForKey(loc);
1354 d->setLabel(loc->ident());
1356 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 10);
1360 void MapWidget::drawTraffic()
1362 if (!_root->getBoolValue("draw-traffic")) {
1366 if (_cachedZoom > SHOW_DETAIL_ZOOM) {
1370 const SGPropertyNode* ai = fgGetNode("/ai/models", true);
1372 for (int i = 0; i < ai->nChildren(); ++i) {
1373 const SGPropertyNode *model = ai->getChild(i);
1374 // skip bad or dead entries
1375 if (!model || model->getIntValue("id", -1) == -1) {
1379 const std::string& name(model->getName());
1380 SGGeod pos = SGGeod::fromDegFt(
1381 model->getDoubleValue("position/longitude-deg"),
1382 model->getDoubleValue("position/latitude-deg"),
1383 model->getDoubleValue("position/altitude-ft"));
1385 double dist = SGGeodesy::distanceNm(_projectionCenter, pos);
1386 if (dist > _drawRangeNm) {
1390 double heading = model->getDoubleValue("orientation/true-heading-deg");
1391 if ((name == "aircraft") || (name == "multiplayer") ||
1392 (name == "wingman") || (name == "tanker")) {
1393 drawAIAircraft(model, pos, heading);
1394 } else if ((name == "ship") || (name == "carrier") || (name == "escort")) {
1395 drawAIShip(model, pos, heading);
1397 } // of ai/models iteration
1400 void MapWidget::drawHelipad(FGHelipad* hp)
1402 SGVec2d pos = project(hp->geod());
1404 glColor3f(1.0, 1.0, 1.0);
1405 circleAt(pos, 16, 5.0);
1407 if (validDataForKey(hp)) {
1408 setAnchorForKey(hp, pos);
1413 ::snprintf(buffer, 1024, "%s\n%03d\n%.0f'",
1414 hp->ident().c_str(),
1415 displayHeading(hp->headingDeg()),
1418 MapData* d = createDataForKey(hp);
1420 d->setLabel(hp->ident());
1422 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 8);
1426 void MapWidget::drawAIAircraft(const SGPropertyNode* model, const SGGeod& pos, double hdg)
1429 SGVec2d p = project(pos);
1431 glColor3f(0.0, 0.0, 0.0);
1433 circleAt(p, 4, 6.0); // black diamond
1435 // draw heading vector
1436 int speedKts = static_cast<int>(model->getDoubleValue("velocities/true-airspeed-kt"));
1440 const double dt = 15.0 / (3600.0); // 15 seconds look-ahead
1441 double distanceM = speedKts * SG_NM_TO_METER * dt;
1445 SGGeodesy::direct(pos, hdg, distanceM, advance, az2);
1447 drawLine(p, project(advance));
1451 // draw callsign / altitude / speed
1453 ::snprintf(buffer, 1024, "%s\n%d'\n%dkts",
1454 model->getStringValue("callsign", "<>"),
1455 static_cast<int>(pos.getElevationFt() / 50.0) * 50,
1458 MapData* d = getOrCreateDataForKey((void*) model);
1460 d->setLabel(model->getStringValue("callsign", "<>"));
1461 d->setPriority(speedKts > 5 ? 60 : 10); // low priority for parked aircraft
1462 d->setOffset(MapData::VALIGN_CENTER | MapData::HALIGN_LEFT, 10);
1467 void MapWidget::drawAIShip(const SGPropertyNode* model, const SGGeod& pos, double hdg)
1469 SGVec2d p = project(pos);
1471 glColor3f(0.0, 0.0, 0.5);
1473 circleAt(p, 4, 6.0); // blue diamond (to differentiate from aircraft.
1475 // draw heading vector
1476 int speedKts = static_cast<int>(model->getDoubleValue("velocities/speed-kts"));
1480 const double dt = 15.0 / (3600.0); // 15 seconds look-ahead
1481 double distanceM = speedKts * SG_NM_TO_METER * dt;
1485 SGGeodesy::direct(pos, hdg, distanceM, advance, az2);
1487 drawLine(p, project(advance));
1490 // draw callsign / speed
1492 ::snprintf(buffer, 1024, "%s\n%dkts",
1493 model->getStringValue("name", "<>"),
1496 MapData* d = getOrCreateDataForKey((void*) model);
1498 d->setLabel(model->getStringValue("name", "<>"));
1499 d->setPriority(speedKts > 2 ? 30 : 10); // low priority for slow moving ships
1500 d->setOffset(MapData::VALIGN_CENTER | MapData::HALIGN_LEFT, 10);
1504 SGVec2d MapWidget::project(const SGGeod& geod) const
1507 double r = earth_radius_lat(geod.getLatitudeRad());
1509 if (_orthoAzimuthProject) {
1510 // http://mathworld.wolfram.com/OrthographicProjection.html
1511 double cosTheta = cos(geod.getLatitudeRad());
1512 double sinDLambda = sin(geod.getLongitudeRad() - _projectionCenter.getLongitudeRad());
1513 double cosDLambda = cos(geod.getLongitudeRad() - _projectionCenter.getLongitudeRad());
1514 double sinTheta1 = sin(_projectionCenter.getLatitudeRad());
1515 double sinTheta = sin(geod.getLatitudeRad());
1516 double cosTheta1 = cos(_projectionCenter.getLatitudeRad());
1518 p = SGVec2d(cosTheta * sinDLambda,
1519 (cosTheta1 * sinTheta) - (sinTheta1 * cosTheta * cosDLambda)) * r * currentScale();
1522 // Sanson-Flamsteed projection, relative to the projection center
1523 double lonDiff = geod.getLongitudeRad() - _projectionCenter.getLongitudeRad(),
1524 latDiff = geod.getLatitudeRad() - _projectionCenter.getLatitudeRad();
1526 p = SGVec2d(cos(geod.getLatitudeRad()) * lonDiff, latDiff) * r * currentScale();
1530 // rotate as necessary
1531 double cost = cos(_upHeading * SG_DEGREES_TO_RADIANS),
1532 sint = sin(_upHeading * SG_DEGREES_TO_RADIANS);
1533 double rx = cost * p.x() - sint * p.y();
1534 double ry = sint * p.x() + cost * p.y();
1535 return SGVec2d(rx, ry);
1538 SGGeod MapWidget::unproject(const SGVec2d& p) const
1540 // unrotate, if necessary
1541 double cost = cos(-_upHeading * SG_DEGREES_TO_RADIANS),
1542 sint = sin(-_upHeading * SG_DEGREES_TO_RADIANS);
1543 SGVec2d ur(cost * p.x() - sint * p.y(),
1544 sint * p.x() + cost * p.y());
1546 double r = earth_radius_lat(_projectionCenter.getLatitudeRad());
1547 SGVec2d unscaled = ur * (1.0 / (currentScale() * r));
1549 if (_orthoAzimuthProject) {
1550 double phi = length(p);
1551 double c = asin(phi);
1552 double sinTheta1 = sin(_projectionCenter.getLatitudeRad());
1553 double cosTheta1 = cos(_projectionCenter.getLatitudeRad());
1555 double lat = asin(cos(c) * sinTheta1 + ((unscaled.y() * sin(c) * cosTheta1) / phi));
1556 double lon = _projectionCenter.getLongitudeRad() +
1557 atan((unscaled.x()* sin(c)) / (phi * cosTheta1 * cos(c) - unscaled.y() * sinTheta1 * sin(c)));
1558 return SGGeod::fromRad(lon, lat);
1560 double lat = unscaled.y() + _projectionCenter.getLatitudeRad();
1561 double lon = (unscaled.x() / cos(lat)) + _projectionCenter.getLongitudeRad();
1562 return SGGeod::fromRad(lon, lat);
1566 double MapWidget::currentScale() const
1568 return 1.0 / pow(2.0, _cachedZoom);
1571 void MapWidget::circleAt(const SGVec2d& center, int nSides, double r)
1573 glBegin(GL_LINE_LOOP);
1574 double advance = (SGD_PI * 2) / nSides;
1575 glVertex2d(center.x(), center.y() + r);
1577 for (int i=1; i<nSides; ++i) {
1578 glVertex2d(center.x() + (sin(t) * r), center.y() + (cos(t) * r));
1584 void MapWidget::circleAtAlt(const SGVec2d& center, int nSides, double r, double r2)
1586 glBegin(GL_LINE_LOOP);
1587 double advance = (SGD_PI * 2) / nSides;
1588 glVertex2d(center.x(), center.y() + r);
1590 for (int i=1; i<nSides; ++i) {
1591 double rr = (i%2 == 0) ? r : r2;
1592 glVertex2d(center.x() + (sin(t) * rr), center.y() + (cos(t) * rr));
1598 void MapWidget::drawLine(const SGVec2d& p1, const SGVec2d& p2)
1601 glVertex2dv(p1.data());
1602 glVertex2dv(p2.data());
1606 void MapWidget::drawLegendBox(const SGVec2d& pos, const std::string& t)
1608 std::vector<std::string> lines(simgear::strutils::split(t, "\n"));
1609 const int LINE_LEADING = 4;
1610 const int MARGIN = 4;
1613 int maxWidth = -1, totalHeight = 0;
1614 int lineHeight = legendFont.getStringHeight();
1616 for (unsigned int ln=0; ln<lines.size(); ++ln) {
1617 totalHeight += lineHeight;
1619 totalHeight += LINE_LEADING;
1622 int lw = legendFont.getStringWidth(lines[ln].c_str());
1623 maxWidth = std::max(maxWidth, lw);
1624 } // of line measurement
1627 return; // all lines are empty, don't draw
1630 totalHeight += MARGIN * 2;
1635 box.min[1] = -totalHeight;
1636 box.max[0] = maxWidth + (MARGIN * 2);
1639 box.draw (pos.x(), pos.y(), PUSTYLE_DROPSHADOW, colour, FALSE, border);
1642 int xPos = pos.x() + MARGIN;
1643 int yPos = pos.y() - (lineHeight + MARGIN);
1644 glColor3f(0.8, 0.8, 0.8);
1646 for (unsigned int ln=0; ln<lines.size(); ++ln) {
1647 legendFont.drawString(lines[ln].c_str(), xPos, yPos);
1648 yPos -= lineHeight + LINE_LEADING;
1652 void MapWidget::drawData()
1654 std::sort(_dataQueue.begin(), _dataQueue.end(), MapData::order);
1656 int hw = _width >> 1,
1658 puBox visBox(makePuBox(-hw, -hh, _width, _height));
1662 std::vector<MapData*> drawQueue;
1664 bool drawData = _root->getBoolValue("draw-data");
1665 const int MAX_DRAW_DATA = 25;
1666 const int MAX_DRAW = 50;
1668 for (; (d < _dataQueue.size()) && (drawn < MAX_DRAW); ++d) {
1669 MapData* md = _dataQueue[d];
1670 md->setDataVisible(drawData);
1672 if (md->isClipped(visBox)) {
1676 if (md->overlaps(drawQueue)) {
1677 if (drawData) { // overlapped with data, let's try just the label
1678 md->setDataVisible(false);
1679 if (md->overlaps(drawQueue)) {
1685 } // of overlaps case
1687 drawQueue.push_back(md);
1689 if (drawData && (drawn >= MAX_DRAW_DATA)) {
1694 // draw lowest-priority first, so higher-priorty items appear on top
1695 std::vector<MapData*>::reverse_iterator r;
1696 for (r = drawQueue.rbegin(); r!= drawQueue.rend(); ++r) {
1701 KeyDataMap::iterator it = _mapData.begin();
1702 for (; it != _mapData.end(); ) {
1704 if (it->second->isExpired()) {
1706 KeyDataMap::iterator cur = it++;
1707 _mapData.erase(cur);
1711 } // of expiry iteration
1714 bool MapWidget::validDataForKey(void* key)
1716 KeyDataMap::iterator it = _mapData.find(key);
1717 if (it == _mapData.end()) {
1718 return false; // no valid data for the key!
1721 it->second->resetAge(); // mark data as valid this frame
1722 _dataQueue.push_back(it->second);
1726 void MapWidget::setAnchorForKey(void* key, const SGVec2d& anchor)
1728 KeyDataMap::iterator it = _mapData.find(key);
1729 if (it == _mapData.end()) {
1730 throw sg_exception("no valid data for key!");
1733 it->second->setAnchor(anchor);
1736 MapData* MapWidget::getOrCreateDataForKey(void* key)
1738 KeyDataMap::iterator it = _mapData.find(key);
1739 if (it == _mapData.end()) {
1740 return createDataForKey(key);
1743 it->second->resetAge(); // mark data as valid this frame
1744 _dataQueue.push_back(it->second);
1748 MapData* MapWidget::createDataForKey(void* key)
1750 KeyDataMap::iterator it = _mapData.find(key);
1751 if (it != _mapData.end()) {
1752 throw sg_exception("duplicate data requested for key!");
1755 MapData* d = new MapData(0);
1757 _dataQueue.push_back(d);
1762 void MapWidget::clearData()
1764 KeyDataMap::iterator it = _mapData.begin();
1765 for (; it != _mapData.end(); ++it) {
1772 int MapWidget::displayHeading(double h) const
1774 if (_magneticHeadings) {
1775 h -= _magVar->get_magvar() * SG_RADIANS_TO_DEGREES;
1778 SG_NORMALIZE_RANGE(h, 0.0, 360.0);
1779 return SGMiscd::roundToInt(h);