5 #include "MapWidget.hxx"
8 #include <algorithm> // for std::sort
9 #include <plib/puAux.h>
11 #include <simgear/route/waypoint.hxx>
12 #include <simgear/sg_inlines.h>
13 #include <simgear/misc/strutils.hxx>
14 #include <simgear/magvar/magvar.hxx>
15 #include <simgear/timing/sg_time.hxx> // for magVar julianDate
16 #include <simgear/structure/exception.hxx>
18 #include <Main/globals.hxx>
19 #include <Main/fg_props.hxx>
20 #include <Autopilot/route_mgr.hxx>
21 #include <Navaids/positioned.hxx>
22 #include <Navaids/navrecord.hxx>
23 #include <Navaids/navlist.hxx>
24 #include <Navaids/fix.hxx>
25 #include <Airports/simple.hxx>
26 #include <Airports/runways.hxx>
27 #include <Main/fg_os.hxx> // fgGetKeyModifiers()
28 #include <Navaids/routePath.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 = 16;
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");
391 MapData::setFont(legendFont);
392 MapData::setPalette(colour);
394 _magVar = new SGMagVar();
397 MapWidget::~MapWidget()
402 void MapWidget::setProperty(SGPropertyNode_ptr prop)
405 _root->setBoolValue("centre-on-aircraft", true);
406 _root->setBoolValue("draw-data", false);
407 _root->setBoolValue("magnetic-headings", true);
410 void MapWidget::setSize(int w, int h)
412 puObject::setSize(w, h);
419 void MapWidget::doHit( int button, int updown, int x, int y )
421 puObject::doHit(button, updown, x, y);
422 if (updown == PU_DRAG) {
427 if (button == 3) { // mouse-wheel up
429 } else if (button == 4) { // mouse-wheel down
433 if (button != active_mouse_button) {
437 _hitLocation = SGVec2d(x - abox.min[0], y - abox.min[1]);
439 if (updown == PU_UP) {
440 puDeactivateWidget();
441 } else if (updown == PU_DOWN) {
442 puSetActiveWidget(this, x, y);
444 if (fgGetKeyModifiers() & KEYMOD_CTRL) {
445 _clickGeod = unproject(_hitLocation - SGVec2d(_width>>1, _height>>1));
450 void MapWidget::handlePan(int x, int y)
452 SGVec2d delta = SGVec2d(x, y) - _hitLocation;
454 _hitLocation = SGVec2d(x,y);
457 int MapWidget::checkKey (int key, int updown )
459 if ((updown == PU_UP) || !isVisible () || !isActive () || (window != puGetWindow())) {
467 pan(SGVec2d(0, -CURSOR_PAN_STEP));
471 pan(SGVec2d(0, CURSOR_PAN_STEP));
475 pan(SGVec2d(CURSOR_PAN_STEP, 0));
479 pan(SGVec2d(-CURSOR_PAN_STEP, 0));
498 void MapWidget::pan(const SGVec2d& delta)
501 _projectionCenter = unproject(-delta);
504 void MapWidget::zoomIn()
511 SG_LOG(SG_GENERAL, SG_INFO, "zoom is now:" << _zoom);
514 void MapWidget::zoomOut()
516 if (_zoom >= MAX_ZOOM) {
521 SG_LOG(SG_GENERAL, SG_INFO, "zoom is now:" << _zoom);
524 void MapWidget::draw(int dx, int dy)
526 _aircraft = SGGeod::fromDeg(fgGetDouble("/position/longitude-deg"),
527 fgGetDouble("/position/latitude-deg"));
528 _magneticHeadings = _root->getBoolValue("magnetic-headings");
532 _root->setBoolValue("centre-on-aircraft", false);
536 if (_root->getBoolValue("centre-on-aircraft")) {
537 _projectionCenter = _aircraft;
540 double julianDate = globals->get_time_params()->getJD();
541 _magVar->update(_projectionCenter, julianDate);
543 bool aircraftUp = _root->getBoolValue("aircraft-heading-up");
545 _upHeading = fgGetDouble("/orientation/heading-deg");
550 SGGeod topLeft = unproject(SGVec2d(_width/2, _height/2));
551 // compute draw range, including a fudge factor for ILSs and other 'long'
553 _drawRangeNm = SGGeodesy::distanceNm(_projectionCenter, topLeft) + 10.0;
555 // drawing operations
556 GLint sx = (int) abox.min[0],
557 sy = (int) abox.min[1];
558 glScissor(dx + sx, dy + sy, _width, _height);
559 glEnable(GL_SCISSOR_TEST);
561 glMatrixMode(GL_MODELVIEW);
563 // cetere drawing about the widget center (which is also the
564 // projection centre)
565 glTranslated(dx + sx + (_width/2), dy + sy + (_height/2), 0.0);
570 int textHeight = legendFont.getStringHeight() + 5;
573 SGVec2d loc = project(_aircraft);
574 glColor3f(1.0, 1.0, 1.0);
575 drawLine(loc, SGVec2d(loc.x(), (_height / 2) - textHeight));
578 if (_magneticHeadings) {
579 displayHdg = (int) fgGetDouble("/orientation/heading-magnetic-deg");
581 displayHdg = (int) _upHeading;
584 double y = (_height / 2) - textHeight;
586 ::snprintf(buf, 16, "%d", displayHdg);
587 int sw = legendFont.getStringWidth(buf);
588 legendFont.drawString(buf, loc.x() - sw/2, y);
595 drawNavRadio(fgGetNode("/instrumentation/nav[0]", false));
596 drawNavRadio(fgGetNode("/instrumentation/nav[1]", false));
597 paintAircraftLocation(_aircraft);
604 glDisable(GL_SCISSOR_TEST);
607 void MapWidget::paintRuler()
609 if (_clickGeod == SGGeod()) {
613 SGVec2d acftPos = project(_aircraft);
614 SGVec2d clickPos = project(_clickGeod);
616 glColor4f(0.0, 1.0, 1.0, 0.6);
617 drawLine(acftPos, clickPos);
619 circleAtAlt(clickPos, 8, 10, 5);
621 double dist, az, az2;
622 SGGeodesy::inverse(_aircraft, _clickGeod, az, az2, dist);
623 if (_magneticHeadings) {
624 az -= _magVar->get_magvar();
625 SG_NORMALIZE_RANGE(az, 0.0, 360.0);
629 ::snprintf(buffer, 1024, "%03d/%.1fnm",
630 SGMiscd::roundToInt(az), dist * SG_METER_TO_NM);
632 MapData* d = getOrCreateDataForKey((void*) RULER_LEGEND_KEY);
634 d->setAnchor(clickPos);
635 d->setOffset(MapData::VALIGN_TOP | MapData::HALIGN_CENTER, 15);
636 d->setPriority(20000);
641 void MapWidget::paintAircraftLocation(const SGGeod& aircraftPos)
643 SGVec2d loc = project(aircraftPos);
645 double hdg = fgGetDouble("/orientation/heading-deg");
648 glColor4f(1.0, 1.0, 0.0, 1.0);
650 glTranslated(loc.x(), loc.y(), 0.0);
651 glRotatef(hdg - _upHeading, 0.0, 0.0, -1.0);
653 const SGVec2d wingspan(12, 0);
654 const SGVec2d nose(0, 8);
655 const SGVec2d tail(0, -14);
656 const SGVec2d tailspan(4,0);
658 drawLine(-wingspan, wingspan);
659 drawLine(nose, tail);
660 drawLine(tail - tailspan, tail + tailspan);
666 void MapWidget::paintRoute()
668 if (_route->numWaypts() < 2) {
672 RoutePath path(_route->waypts());
674 // first pass, draw the actual lines
677 for (int w=0; w<_route->numWaypts(); ++w) {
678 SGGeodVec gv(path.pathForIndex(w));
683 if (w < _route->currentIndex()) {
684 glColor4f(0.5, 0.5, 0.5, 0.7);
686 glColor4f(1.0, 0.0, 1.0, 1.0);
689 flightgear::WayptRef wpt(_route->wayptAtIndex(w));
690 if (wpt->flag(flightgear::WPT_MISS)) {
691 glEnable(GL_LINE_STIPPLE);
692 glLineStipple(1, 0x00FF);
695 glBegin(GL_LINE_STRIP);
696 for (unsigned int i=0; i<gv.size(); ++i) {
697 SGVec2d p = project(gv[i]);
698 glVertex2d(p.x(), p.y());
702 glDisable(GL_LINE_STIPPLE);
706 // second pass, draw waypoint symbols and data
707 for (int w=0; w < _route->numWaypts(); ++w) {
708 flightgear::WayptRef wpt(_route->wayptAtIndex(w));
709 SGGeod g = path.positionForIndex(w);
711 continue; // Vectors or similar
714 SGVec2d p = project(g);
715 glColor4f(1.0, 0.0, 1.0, 1.0);
716 circleAtAlt(p, 8, 12, 5);
718 std::ostringstream legend;
719 legend << wpt->ident();
720 if (wpt->altitudeRestriction() != flightgear::RESTRICT_NONE) {
721 legend << '\n' << SGMiscd::roundToInt(wpt->altitudeFt()) << '\'';
724 if (wpt->speedRestriction() == flightgear::SPEED_RESTRICT_MACH) {
725 legend << '\n' << wpt->speedMach() << "M";
726 } else if (wpt->speedRestriction() != flightgear::RESTRICT_NONE) {
727 legend << '\n' << SGMiscd::roundToInt(wpt->speedKts()) << "Kts";
730 MapData* d = getOrCreateDataForKey(reinterpret_cast<void*>(w * 2));
731 d->setText(legend.str());
732 d->setLabel(wpt->ident());
734 d->setOffset(MapData::VALIGN_TOP | MapData::HALIGN_CENTER, 15);
735 d->setPriority(w < _route->currentIndex() ? 9000 : 12000);
737 } // of second waypoint iteration
741 * Round a SGGeod to an arbitrary precision.
742 * For example, passing precision of 0.5 will round to the nearest 0.5 of
743 * a degree in both lat and lon - passing in 3.0 rounds to the nearest 3 degree
744 * multiple, and so on.
746 static SGGeod roundGeod(double precision, const SGGeod& g)
748 double lon = SGMiscd::round(g.getLongitudeDeg() / precision);
749 double lat = SGMiscd::round(g.getLatitudeDeg() / precision);
751 return SGGeod::fromDeg(lon * precision, lat * precision);
754 bool MapWidget::drawLineClipped(const SGVec2d& a, const SGVec2d& b)
756 double minX = SGMiscd::min(a.x(), b.x()),
757 minY = SGMiscd::min(a.y(), b.y()),
758 maxX = SGMiscd::max(a.x(), b.x()),
759 maxY = SGMiscd::max(a.y(), b.y());
761 int hh = _height >> 1, hw = _width >> 1;
763 if ((maxX < -hw) || (minX > hw) || (minY > hh) || (maxY < -hh)) {
767 glVertex2dv(a.data());
768 glVertex2dv(b.data());
772 SGVec2d MapWidget::gridPoint(int ix, int iy)
774 int key = (ix + 0x7fff) | ((iy + 0x7fff) << 16);
775 GridPointCache::iterator it = _gridCache.find(key);
776 if (it != _gridCache.end()) {
780 SGGeod gp = SGGeod::fromDeg(
781 _gridCenter.getLongitudeDeg() + ix * _gridSpacing,
782 _gridCenter.getLatitudeDeg() + iy * _gridSpacing);
784 SGVec2d proj = project(gp);
785 _gridCache[key] = proj;
789 void MapWidget::drawLatLonGrid()
792 _gridCenter = roundGeod(_gridSpacing, _projectionCenter);
798 glColor4f(0.8, 0.8, 0.8, 0.4);
806 for (int x = -ix; x < ix; ++x) {
807 didDraw |= drawLineClipped(gridPoint(x, -iy), gridPoint(x+1, -iy));
808 didDraw |= drawLineClipped(gridPoint(x, iy), gridPoint(x+1, iy));
809 didDraw |= drawLineClipped(gridPoint(x, -iy), gridPoint(x, -iy + 1));
810 didDraw |= drawLineClipped(gridPoint(x, iy), gridPoint(x, iy - 1));
814 for (int y = -iy; y < iy; ++y) {
815 didDraw |= drawLineClipped(gridPoint(-ix, y), gridPoint(-ix, y+1));
816 didDraw |= drawLineClipped(gridPoint(-ix, y), gridPoint(-ix + 1, y));
817 didDraw |= drawLineClipped(gridPoint(ix, y), gridPoint(ix, y+1));
818 didDraw |= drawLineClipped(gridPoint(ix, y), gridPoint(ix - 1, y));
829 void MapWidget::drawGPSData()
831 std::string gpsMode = _gps->getStringValue("mode");
833 SGGeod wp0Geod = SGGeod::fromDeg(
834 _gps->getDoubleValue("wp/wp[0]/longitude-deg"),
835 _gps->getDoubleValue("wp/wp[0]/latitude-deg"));
837 SGGeod wp1Geod = SGGeod::fromDeg(
838 _gps->getDoubleValue("wp/wp[1]/longitude-deg"),
839 _gps->getDoubleValue("wp/wp[1]/latitude-deg"));
842 double gpsTrackDeg = _gps->getDoubleValue("indicated-track-true-deg");
843 double gpsSpeed = _gps->getDoubleValue("indicated-ground-speed-kt");
846 if (gpsSpeed > 3.0) { // only draw track line if valid
848 SGGeodesy::direct(_aircraft, gpsTrackDeg, _drawRangeNm * SG_NM_TO_METER, trackRadial, az2);
850 glColor4f(1.0, 1.0, 0.0, 1.0);
851 glEnable(GL_LINE_STIPPLE);
852 glLineStipple(1, 0x00FF);
853 drawLine(project(_aircraft), project(trackRadial));
854 glDisable(GL_LINE_STIPPLE);
857 if (gpsMode == "dto") {
858 SGVec2d wp0Pos = project(wp0Geod);
859 SGVec2d wp1Pos = project(wp1Geod);
861 glColor4f(1.0, 0.0, 1.0, 1.0);
862 drawLine(wp0Pos, wp1Pos);
866 if (_gps->getBoolValue("scratch/valid")) {
872 class MapAirportFilter : public FGAirport::AirportFilter
875 MapAirportFilter(SGPropertyNode_ptr nd)
877 _heliports = nd->getBoolValue("show-heliports", false);
878 _hardRunwaysOnly = nd->getBoolValue("hard-surfaced-airports", true);
879 _minLengthFt = nd->getDoubleValue("min-runway-length-ft", 2000.0);
882 virtual FGPositioned::Type maxType() const {
883 return _heliports ? FGPositioned::HELIPORT : FGPositioned::AIRPORT;
886 virtual bool passAirport(FGAirport* aApt) const {
887 if (_hardRunwaysOnly) {
888 return aApt->hasHardRunwayOfLengthFt(_minLengthFt);
896 bool _hardRunwaysOnly;
900 void MapWidget::drawAirports()
902 MapAirportFilter af(_root);
903 FGPositioned::List apts = FGPositioned::findWithinRange(_projectionCenter, _drawRangeNm, &af);
904 for (unsigned int i=0; i<apts.size(); ++i) {
905 drawAirport((FGAirport*) apts[i].get());
909 class NavaidFilter : public FGPositioned::Filter
912 NavaidFilter(bool fixesEnabled, bool navaidsEnabled) :
913 _fixes(fixesEnabled),
914 _navaids(navaidsEnabled)
917 virtual bool pass(FGPositioned* aPos) const {
918 if (_fixes && (aPos->type() == FGPositioned::FIX)) {
919 // ignore fixes which end in digits - expirmental
920 if (aPos->ident().length() > 4 && isdigit(aPos->ident()[3]) && isdigit(aPos->ident()[4])) {
928 virtual FGPositioned::Type minType() const {
929 return _fixes ? FGPositioned::FIX : FGPositioned::VOR;
932 virtual FGPositioned::Type maxType() const {
933 return _navaids ? FGPositioned::NDB : FGPositioned::FIX;
937 bool _fixes, _navaids;
940 void MapWidget::drawNavaids()
942 bool fixes = _root->getBoolValue("draw-fixes");
943 NavaidFilter f(fixes, _root->getBoolValue("draw-navaids"));
945 if (f.minType() <= f.maxType()) {
946 FGPositioned::List navs = FGPositioned::findWithinRange(_projectionCenter, _drawRangeNm, &f);
949 for (unsigned int i=0; i<navs.size(); ++i) {
950 FGPositioned::Type ty = navs[i]->type();
951 if (ty == FGPositioned::NDB) {
952 drawNDB(false, (FGNavRecord*) navs[i].get());
953 } else if (ty == FGPositioned::VOR) {
954 drawVOR(false, (FGNavRecord*) navs[i].get());
955 } else if (ty == FGPositioned::FIX) {
956 drawFix((FGFix*) navs[i].get());
958 } // of navaid iteration
959 } // of navaids || fixes are drawn test
962 void MapWidget::drawNDB(bool tuned, FGNavRecord* ndb)
964 SGVec2d pos = project(ndb->geod());
967 glColor3f(0.0, 1.0, 1.0);
969 glColor3f(0.0, 0.0, 0.0);
972 glEnable(GL_LINE_STIPPLE);
973 glLineStipple(1, 0x00FF);
974 circleAt(pos, 20, 6);
975 circleAt(pos, 20, 10);
976 glDisable(GL_LINE_STIPPLE);
978 if (validDataForKey(ndb)) {
979 setAnchorForKey(ndb, pos);
984 ::snprintf(buffer, 1024, "%s\n%s %3.0fKhz",
985 ndb->name().c_str(), ndb->ident().c_str(),ndb->get_freq()/100.0);
987 MapData* d = createDataForKey(ndb);
989 d->setLabel(ndb->ident());
991 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 10);
996 void MapWidget::drawVOR(bool tuned, FGNavRecord* vor)
998 SGVec2d pos = project(vor->geod());
1000 glColor3f(0.0, 1.0, 1.0);
1002 glColor3f(0.0, 0.0, 1.0);
1005 circleAt(pos, 6, 8);
1007 if (validDataForKey(vor)) {
1008 setAnchorForKey(vor, pos);
1013 ::snprintf(buffer, 1024, "%s\n%s %6.3fMhz",
1014 vor->name().c_str(), vor->ident().c_str(),
1015 vor->get_freq() / 100.0);
1017 MapData* d = createDataForKey(vor);
1019 d->setLabel(vor->ident());
1020 d->setPriority(tuned ? 10000 : 100);
1021 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 12);
1025 void MapWidget::drawFix(FGFix* fix)
1027 SGVec2d pos = project(fix->geod());
1028 glColor3f(0.0, 0.0, 0.0);
1029 circleAt(pos, 3, 6);
1031 if (_zoom > SHOW_DETAIL_ZOOM) {
1032 return; // hide fix labels beyond a certain zoom level
1035 if (validDataForKey(fix)) {
1036 setAnchorForKey(fix, pos);
1040 MapData* d = createDataForKey(fix);
1041 d->setLabel(fix->ident());
1043 d->setOffset(MapData::VALIGN_CENTER | MapData::HALIGN_LEFT, 10);
1047 void MapWidget::drawNavRadio(SGPropertyNode_ptr radio)
1049 if (!radio || radio->getBoolValue("slaved-to-gps", false)
1050 || !radio->getBoolValue("in-range", false)) {
1054 if (radio->getBoolValue("nav-loc", false)) {
1055 drawTunedLocalizer(radio);
1058 // identify the tuned station - unfortunately we don't get lat/lon directly,
1059 // need to do the frequency search again
1060 double mhz = radio->getDoubleValue("frequencies/selected-mhz", 0.0);
1061 FGNavRecord* nav = globals->get_navlist()->findByFreq(mhz, _aircraft);
1062 if (!nav || (nav->ident() != radio->getStringValue("nav-id"))) {
1063 // mismatch between navradio selection logic and ours!
1070 SGVec2d pos = project(nav->geod());
1073 double trueRadial = radio->getDoubleValue("radials/target-radial-deg");
1074 SGGeodesy::direct(nav->geod(), trueRadial, nav->get_range() * SG_NM_TO_METER, range, az2);
1075 SGVec2d prange = project(range);
1077 SGVec2d norm = normalize(prange - pos);
1078 SGVec2d perp(norm.y(), -norm.x());
1080 circleAt(pos, 64, length(prange - pos));
1081 drawLine(pos, prange);
1083 // draw to/from arrows
1084 SGVec2d midPoint = (pos + prange) * 0.5;
1085 if (radio->getBoolValue("from-flag")) {
1091 SGVec2d arrowB = midPoint - (norm * sz) + (perp * sz);
1092 SGVec2d arrowC = midPoint - (norm * sz) - (perp * sz);
1093 drawLine(midPoint, arrowB);
1094 drawLine(arrowB, arrowC);
1095 drawLine(arrowC, midPoint);
1097 drawLine(pos, (2 * pos) - prange); // reciprocal radial
1100 void MapWidget::drawTunedLocalizer(SGPropertyNode_ptr radio)
1102 double mhz = radio->getDoubleValue("frequencies/selected-mhz", 0.0);
1103 FGNavRecord* loc = globals->get_loclist()->findByFreq(mhz, _aircraft);
1104 if (!loc || (loc->ident() != radio->getStringValue("nav-id"))) {
1105 // mismatch between navradio selection logic and ours!
1109 if (loc->runway()) {
1110 drawILS(true, loc->runway());
1115 void MapWidget::drawObstacle(FGPositioned* obs)
1117 SGVec2d pos = project(obs->geod());
1118 glColor3f(0.0, 0.0, 0.0);
1120 drawLine(pos, pos + SGVec2d());
1124 void MapWidget::drawAirport(FGAirport* apt)
1126 // draw tower location
1127 SGVec2d towerPos = project(apt->getTowerLocation());
1129 if (_zoom <= SHOW_DETAIL_ZOOM) {
1130 glColor3f(1.0, 1.0, 1.0);
1133 drawLine(towerPos + SGVec2d(3, 0), towerPos + SGVec2d(3, 10));
1134 drawLine(towerPos + SGVec2d(-3, 0), towerPos + SGVec2d(-3, 10));
1135 drawLine(towerPos + SGVec2d(-6, 20), towerPos + SGVec2d(-3, 10));
1136 drawLine(towerPos + SGVec2d(6, 20), towerPos + SGVec2d(3, 10));
1137 drawLine(towerPos + SGVec2d(-6, 20), towerPos + SGVec2d(6, 20));
1140 if (validDataForKey(apt)) {
1141 setAnchorForKey(apt, towerPos);
1144 ::snprintf(buffer, 1024, "%s\n%s",
1145 apt->ident().c_str(), apt->name().c_str());
1147 MapData* d = createDataForKey(apt);
1149 d->setLabel(apt->ident());
1150 d->setPriority(100 + scoreAirportRunways(apt));
1151 d->setOffset(MapData::VALIGN_TOP | MapData::HALIGN_CENTER, 6);
1152 d->setAnchor(towerPos);
1155 if (_zoom > SHOW_DETAIL_ZOOM) {
1159 for (unsigned int r=0; r<apt->numRunways(); ++r) {
1160 FGRunway* rwy = apt->getRunwayByIndex(r);
1161 if (!rwy->isReciprocal()) {
1166 for (unsigned int r=0; r<apt->numRunways(); ++r) {
1167 FGRunway* rwy = apt->getRunwayByIndex(r);
1168 if (!rwy->isReciprocal()) {
1173 drawILS(false, rwy);
1175 } // of runway iteration
1179 int MapWidget::scoreAirportRunways(FGAirport* apt)
1181 bool needHardSurface = _root->getBoolValue("hard-surfaced-airports", true);
1182 double minLength = _root->getDoubleValue("min-runway-length-ft", 2000.0);
1185 unsigned int numRunways(apt->numRunways());
1186 for (unsigned int r=0; r<numRunways; ++r) {
1187 FGRunway* rwy = apt->getRunwayByIndex(r);
1188 if (rwy->isReciprocal()) {
1192 if (needHardSurface && !rwy->isHardSurface()) {
1196 if (rwy->lengthFt() < minLength) {
1200 int scoreLength = SGMiscd::roundToInt(rwy->lengthFt() / 200.0);
1201 score += scoreLength;
1202 } // of runways iteration
1207 void MapWidget::drawRunwayPre(FGRunway* rwy)
1209 SGVec2d p1 = project(rwy->begin());
1210 SGVec2d p2 = project(rwy->end());
1213 glColor3f(1.0, 0.0, 1.0);
1217 void MapWidget::drawRunway(FGRunway* rwy)
1220 // optionally show active, stopway, etc
1221 // in legend, show published heading and length
1222 // and threshold elevation
1224 SGVec2d p1 = project(rwy->begin());
1225 SGVec2d p2 = project(rwy->end());
1227 glColor3f(1.0, 1.0, 1.0);
1228 SGVec2d inset = normalize(p2 - p1) * 2;
1230 drawLine(p1 + inset, p2 - inset);
1232 if (validDataForKey(rwy)) {
1233 setAnchorForKey(rwy, (p1 + p2) * 0.5);
1238 ::snprintf(buffer, 1024, "%s/%s\n%3.0f/%3.0f\n%.0f'",
1239 rwy->ident().c_str(),
1240 rwy->reciprocalRunway()->ident().c_str(),
1242 rwy->reciprocalRunway()->headingDeg(),
1245 MapData* d = createDataForKey(rwy);
1247 d->setLabel(rwy->ident() + "/" + rwy->reciprocalRunway()->ident());
1249 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 12);
1250 d->setAnchor((p1 + p2) * 0.5);
1253 void MapWidget::drawILS(bool tuned, FGRunway* rwy)
1255 // arrow, tip centered on the landing threshold
1256 // using LOC transmitter position would be more accurate, but
1257 // is visually cluttered
1258 // arrow width is based upon the computed localizer width
1260 FGNavRecord* loc = rwy->ILS();
1261 double halfBeamWidth = loc->localizerWidth() * 0.5;
1262 SGVec2d t = project(rwy->threshold());
1264 double rangeM = loc->get_range() * SG_NM_TO_METER;
1265 double radial = loc->get_multiuse();
1266 SG_NORMALIZE_RANGE(radial, 0.0, 360.0);
1269 // compute the three end points at the widge end of the arrow
1270 SGGeodesy::direct(loc->geod(), radial, -rangeM, locEnd, az2);
1271 SGVec2d endCentre = project(locEnd);
1273 SGGeodesy::direct(loc->geod(), radial + halfBeamWidth, -rangeM * 1.1, locEnd, az2);
1274 SGVec2d endR = project(locEnd);
1276 SGGeodesy::direct(loc->geod(), radial - halfBeamWidth, -rangeM * 1.1, locEnd, az2);
1277 SGVec2d endL = project(locEnd);
1279 // outline two triangles
1282 glColor3f(0.0, 1.0, 1.0);
1284 glColor3f(0.0, 0.0, 1.0);
1287 glBegin(GL_LINE_LOOP);
1288 glVertex2dv(t.data());
1289 glVertex2dv(endCentre.data());
1290 glVertex2dv(endL.data());
1292 glBegin(GL_LINE_LOOP);
1293 glVertex2dv(t.data());
1294 glVertex2dv(endCentre.data());
1295 glVertex2dv(endR.data());
1298 if (validDataForKey(loc)) {
1299 setAnchorForKey(loc, endR);
1304 ::snprintf(buffer, 1024, "%s\n%s\n%3.2fMHz",
1305 loc->name().c_str(), loc->ident().c_str(),loc->get_freq()/100.0);
1307 MapData* d = createDataForKey(loc);
1309 d->setLabel(loc->ident());
1311 d->setOffset(MapData::HALIGN_CENTER | MapData::VALIGN_BOTTOM, 10);
1315 void MapWidget::drawTraffic()
1317 if (!_root->getBoolValue("draw-traffic")) {
1321 if (_zoom > SHOW_DETAIL_ZOOM) {
1325 const SGPropertyNode* ai = fgGetNode("/ai/models", true);
1327 for (int i = 0; i < ai->nChildren(); ++i) {
1328 const SGPropertyNode *model = ai->getChild(i);
1329 // skip bad or dead entries
1330 if (!model || model->getIntValue("id", -1) == -1) {
1334 const std::string& name(model->getName());
1335 SGGeod pos = SGGeod::fromDegFt(
1336 model->getDoubleValue("position/longitude-deg"),
1337 model->getDoubleValue("position/latitude-deg"),
1338 model->getDoubleValue("position/altitude-ft"));
1340 double dist = SGGeodesy::distanceNm(_projectionCenter, pos);
1341 if (dist > _drawRangeNm) {
1345 double heading = model->getDoubleValue("orientation/true-heading-deg");
1346 if ((name == "aircraft") || (name == "multiplayer") ||
1347 (name == "wingman") || (name == "tanker")) {
1348 drawAIAircraft(model, pos, heading);
1349 } else if ((name == "ship") || (name == "carrier") || (name == "escort")) {
1350 drawAIShip(model, pos, heading);
1352 } // of ai/models iteration
1355 void MapWidget::drawAIAircraft(const SGPropertyNode* model, const SGGeod& pos, double hdg)
1358 SGVec2d p = project(pos);
1360 glColor3f(0.0, 0.0, 0.0);
1362 circleAt(p, 4, 6.0); // black diamond
1364 // draw heading vector
1365 int speedKts = static_cast<int>(model->getDoubleValue("velocities/true-airspeed-kt"));
1369 const double dt = 15.0 / (3600.0); // 15 seconds look-ahead
1370 double distanceM = speedKts * SG_NM_TO_METER * dt;
1374 SGGeodesy::direct(pos, hdg, distanceM, advance, az2);
1376 drawLine(p, project(advance));
1379 if (validDataForKey((void*) model)) {
1380 setAnchorForKey((void*) model, p);
1384 // draw callsign / altitude / speed
1388 ::snprintf(buffer, 1024, "%s\n%d'\n%dkts",
1389 model->getStringValue("callsign", "<>"),
1390 static_cast<int>(pos.getElevationFt() / 50.0) * 50,
1393 MapData* d = createDataForKey((void*) model);
1395 d->setLabel(model->getStringValue("callsign", "<>"));
1396 d->setPriority(speedKts > 5 ? 60 : 10); // low priority for parked aircraft
1397 d->setOffset(MapData::VALIGN_CENTER | MapData::HALIGN_LEFT, 10);
1402 void MapWidget::drawAIShip(const SGPropertyNode* model, const SGGeod& pos, double hdg)
1404 SGVec2d p = project(pos);
1406 glColor3f(0.0, 0.0, 0.5);
1408 circleAt(p, 4, 6.0); // blue diamond (to differentiate from aircraft.
1410 // draw heading vector
1411 int speedKts = static_cast<int>(model->getDoubleValue("velocities/speed-kts"));
1415 const double dt = 15.0 / (3600.0); // 15 seconds look-ahead
1416 double distanceM = speedKts * SG_NM_TO_METER * dt;
1420 SGGeodesy::direct(pos, hdg, distanceM, advance, az2);
1422 drawLine(p, project(advance));
1425 if (validDataForKey((void*) model)) {
1426 setAnchorForKey((void*) model, p);
1430 // draw callsign / speed
1432 ::snprintf(buffer, 1024, "%s\n%dkts",
1433 model->getStringValue("name", "<>"),
1436 MapData* d = createDataForKey((void*) model);
1438 d->setLabel(model->getStringValue("name", "<>"));
1439 d->setPriority(speedKts > 2 ? 30 : 10); // low priority for slow moving ships
1440 d->setOffset(MapData::VALIGN_CENTER | MapData::HALIGN_LEFT, 10);
1444 SGVec2d MapWidget::project(const SGGeod& geod) const
1446 // Sanson-Flamsteed projection, relative to the projection center
1447 double r = earth_radius_lat(geod.getLatitudeRad());
1448 double lonDiff = geod.getLongitudeRad() - _projectionCenter.getLongitudeRad(),
1449 latDiff = geod.getLatitudeRad() - _projectionCenter.getLatitudeRad();
1451 SGVec2d p = SGVec2d(cos(geod.getLatitudeRad()) * lonDiff, latDiff) * r * currentScale();
1453 // rotate as necessary
1454 double cost = cos(_upHeading * SG_DEGREES_TO_RADIANS),
1455 sint = sin(_upHeading * SG_DEGREES_TO_RADIANS);
1456 double rx = cost * p.x() - sint * p.y();
1457 double ry = sint * p.x() + cost * p.y();
1458 return SGVec2d(rx, ry);
1461 SGGeod MapWidget::unproject(const SGVec2d& p) const
1463 // unrotate, if necessary
1464 double cost = cos(-_upHeading * SG_DEGREES_TO_RADIANS),
1465 sint = sin(-_upHeading * SG_DEGREES_TO_RADIANS);
1466 SGVec2d ur(cost * p.x() - sint * p.y(),
1467 sint * p.x() + cost * p.y());
1469 double r = earth_radius_lat(_projectionCenter.getLatitudeRad());
1470 SGVec2d unscaled = ur * (1.0 / (currentScale() * r));
1472 double lat = unscaled.y() + _projectionCenter.getLatitudeRad();
1473 double lon = (unscaled.x() / cos(lat)) + _projectionCenter.getLongitudeRad();
1475 return SGGeod::fromRad(lon, lat);
1478 double MapWidget::currentScale() const
1480 return 1.0 / pow(2.0, _zoom);
1483 void MapWidget::circleAt(const SGVec2d& center, int nSides, double r)
1485 glBegin(GL_LINE_LOOP);
1486 double advance = (SGD_PI * 2) / nSides;
1487 glVertex2d(center.x(), center.y() + r);
1489 for (int i=1; i<nSides; ++i) {
1490 glVertex2d(center.x() + (sin(t) * r), center.y() + (cos(t) * r));
1496 void MapWidget::circleAtAlt(const SGVec2d& center, int nSides, double r, double r2)
1498 glBegin(GL_LINE_LOOP);
1499 double advance = (SGD_PI * 2) / nSides;
1500 glVertex2d(center.x(), center.y() + r);
1502 for (int i=1; i<nSides; ++i) {
1503 double rr = (i%2 == 0) ? r : r2;
1504 glVertex2d(center.x() + (sin(t) * rr), center.y() + (cos(t) * rr));
1510 void MapWidget::drawLine(const SGVec2d& p1, const SGVec2d& p2)
1513 glVertex2dv(p1.data());
1514 glVertex2dv(p2.data());
1518 void MapWidget::drawLegendBox(const SGVec2d& pos, const std::string& t)
1520 std::vector<std::string> lines(simgear::strutils::split(t, "\n"));
1521 const int LINE_LEADING = 4;
1522 const int MARGIN = 4;
1525 int maxWidth = -1, totalHeight = 0;
1526 int lineHeight = legendFont.getStringHeight();
1528 for (unsigned int ln=0; ln<lines.size(); ++ln) {
1529 totalHeight += lineHeight;
1531 totalHeight += LINE_LEADING;
1534 int lw = legendFont.getStringWidth(lines[ln].c_str());
1535 maxWidth = std::max(maxWidth, lw);
1536 } // of line measurement
1539 return; // all lines are empty, don't draw
1542 totalHeight += MARGIN * 2;
1547 box.min[1] = -totalHeight;
1548 box.max[0] = maxWidth + (MARGIN * 2);
1551 box.draw (pos.x(), pos.y(), PUSTYLE_DROPSHADOW, colour, FALSE, border);
1554 int xPos = pos.x() + MARGIN;
1555 int yPos = pos.y() - (lineHeight + MARGIN);
1556 glColor3f(0.8, 0.8, 0.8);
1558 for (unsigned int ln=0; ln<lines.size(); ++ln) {
1559 legendFont.drawString(lines[ln].c_str(), xPos, yPos);
1560 yPos -= lineHeight + LINE_LEADING;
1564 void MapWidget::drawData()
1566 std::sort(_dataQueue.begin(), _dataQueue.end(), MapData::order);
1568 int hw = _width >> 1,
1570 puBox visBox(makePuBox(-hw, -hh, _width, _height));
1574 std::vector<MapData*> drawQueue;
1576 bool drawData = _root->getBoolValue("draw-data");
1577 const int MAX_DRAW_DATA = 25;
1578 const int MAX_DRAW = 50;
1580 for (; (d < _dataQueue.size()) && (drawn < MAX_DRAW); ++d) {
1581 MapData* md = _dataQueue[d];
1582 md->setDataVisible(drawData);
1584 if (md->isClipped(visBox)) {
1588 if (md->overlaps(drawQueue)) {
1589 if (drawData) { // overlapped with data, let's try just the label
1590 md->setDataVisible(false);
1591 if (md->overlaps(drawQueue)) {
1597 } // of overlaps case
1599 drawQueue.push_back(md);
1601 if (drawData && (drawn >= MAX_DRAW_DATA)) {
1606 // draw lowest-priority first, so higher-priorty items appear on top
1607 std::vector<MapData*>::reverse_iterator r;
1608 for (r = drawQueue.rbegin(); r!= drawQueue.rend(); ++r) {
1613 KeyDataMap::iterator it = _mapData.begin();
1614 for (; it != _mapData.end(); ) {
1616 if (it->second->isExpired()) {
1618 KeyDataMap::iterator cur = it++;
1619 _mapData.erase(cur);
1623 } // of expiry iteration
1626 bool MapWidget::validDataForKey(void* key)
1628 KeyDataMap::iterator it = _mapData.find(key);
1629 if (it == _mapData.end()) {
1630 return false; // no valid data for the key!
1633 it->second->resetAge(); // mark data as valid this frame
1634 _dataQueue.push_back(it->second);
1638 void MapWidget::setAnchorForKey(void* key, const SGVec2d& anchor)
1640 KeyDataMap::iterator it = _mapData.find(key);
1641 if (it == _mapData.end()) {
1642 throw sg_exception("no valid data for key!");
1645 it->second->setAnchor(anchor);
1648 MapData* MapWidget::getOrCreateDataForKey(void* key)
1650 KeyDataMap::iterator it = _mapData.find(key);
1651 if (it == _mapData.end()) {
1652 return createDataForKey(key);
1655 it->second->resetAge(); // mark data as valid this frame
1656 _dataQueue.push_back(it->second);
1660 MapData* MapWidget::createDataForKey(void* key)
1662 KeyDataMap::iterator it = _mapData.find(key);
1663 if (it != _mapData.end()) {
1664 throw sg_exception("duplicate data requested for key!");
1667 MapData* d = new MapData(0);
1669 _dataQueue.push_back(d);