1 // kln89_page.cxx - a class to manage the simulation of a KLN89
2 // GPS unit. Note that this is primarily the
3 // simulation of the user interface and display
4 // - the core GPS calculations such as position
5 // and waypoint sequencing are done (or should
6 // be done) by FG code.
8 // Written by David Luff, started 2005.
10 // Copyright (C) 2005 - David C Luff - daveluff AT ntlworld.com
12 // This program is free software; you can redistribute it and/or
13 // modify it under the terms of the GNU General Public License as
14 // published by the Free Software Foundation; either version 2 of the
15 // License, or (at your option) any later version.
17 // This program is distributed in the hope that it will be useful, but
18 // WITHOUT ANY WARRANTY; without even the implied warranty of
19 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 // General Public License for more details.
22 // You should have received a copy of the GNU General Public License
23 // along with this program; if not, write to the Free Software
24 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
29 #include "kln89_page.hxx"
30 #include "kln89_page_apt.hxx"
31 #include "kln89_page_vor.hxx"
32 #include "kln89_page_ndb.hxx"
33 #include "kln89_page_int.hxx"
34 #include "kln89_page_usr.hxx"
35 #include "kln89_page_act.hxx"
36 #include "kln89_page_nav.hxx"
37 #include "kln89_page_fpl.hxx"
38 #include "kln89_page_cal.hxx"
39 #include "kln89_page_set.hxx"
40 #include "kln89_page_oth.hxx"
41 #include "kln89_page_dir.hxx"
42 #include "kln89_page_nrst.hxx"
43 #include "kln89_symbols.hxx"
47 #include <ATCDCL/ATCProjection.hxx>
49 #include <ATC/atcutils.hxx>
52 #include <Main/fg_props.hxx>
53 #include <simgear/math/SGMath.hxx>
54 #include <simgear/structure/commands.hxx>
55 #include <Airports/simple.hxx>
59 // Command callbacks for FlightGear
61 static bool do_kln89_msg_pressed(const SGPropertyNode* arg) {
62 //cout << "do_kln89_msg_pressed called!\n";
63 KLN89* gps = (KLN89*)globals->get_subsystem("kln89");
68 static bool do_kln89_obs_pressed(const SGPropertyNode* arg) {
69 //cout << "do_kln89_obs_pressed called!\n";
70 KLN89* gps = (KLN89*)globals->get_subsystem("kln89");
75 static bool do_kln89_alt_pressed(const SGPropertyNode* arg) {
76 //cout << "do_kln89_alt_pressed called!\n";
77 KLN89* gps = (KLN89*)globals->get_subsystem("kln89");
82 static bool do_kln89_nrst_pressed(const SGPropertyNode* arg) {
83 KLN89* gps = (KLN89*)globals->get_subsystem("kln89");
88 static bool do_kln89_dto_pressed(const SGPropertyNode* arg) {
89 KLN89* gps = (KLN89*)globals->get_subsystem("kln89");
94 static bool do_kln89_clr_pressed(const SGPropertyNode* arg) {
95 KLN89* gps = (KLN89*)globals->get_subsystem("kln89");
100 static bool do_kln89_ent_pressed(const SGPropertyNode* arg) {
101 KLN89* gps = (KLN89*)globals->get_subsystem("kln89");
106 static bool do_kln89_crsr_pressed(const SGPropertyNode* arg) {
107 KLN89* gps = (KLN89*)globals->get_subsystem("kln89");
112 static bool do_kln89_knob1left1(const SGPropertyNode* arg) {
113 KLN89* gps = (KLN89*)globals->get_subsystem("kln89");
118 static bool do_kln89_knob1right1(const SGPropertyNode* arg) {
119 KLN89* gps = (KLN89*)globals->get_subsystem("kln89");
124 static bool do_kln89_knob2left1(const SGPropertyNode* arg) {
125 KLN89* gps = (KLN89*)globals->get_subsystem("kln89");
130 static bool do_kln89_knob2right1(const SGPropertyNode* arg) {
131 KLN89* gps = (KLN89*)globals->get_subsystem("kln89");
136 // End command callbacks
138 KLN89::KLN89(RenderArea2D* instrument)
139 : DCLGPS(instrument) {
140 _mode = KLN89_MODE_DISP;
147 // ..Field..[0] => no fields in action
148 _xFieldBorder[0] = 0;
149 _xFieldBorder[1] = 0;
150 _yFieldBorder[0] = 0;
151 _yFieldBorder[1] = 0;
152 _xFieldBorder[2] = 2;
153 _yFieldBorder[2] = 0;
156 _xFieldStart[2] = 45;
166 KLN89Page* apt_page = new KLN89AptPage(this);
167 _pages.push_back(apt_page);
168 KLN89Page* vor_page = new KLN89VorPage(this);
169 _pages.push_back(vor_page);
170 KLN89Page* ndb_page = new KLN89NDBPage(this);
171 _pages.push_back(ndb_page);
172 KLN89Page* int_page = new KLN89IntPage(this);
173 _pages.push_back(int_page);
174 KLN89Page* usr_page = new KLN89UsrPage(this);
175 _pages.push_back(usr_page);
176 KLN89Page* act_page = new KLN89ActPage(this);
177 _pages.push_back(act_page);
178 KLN89Page* nav_page = new KLN89NavPage(this);
179 _pages.push_back(nav_page);
180 KLN89Page* fpl_page = new KLN89FplPage(this);
181 _pages.push_back(fpl_page);
182 KLN89Page* cal_page = new KLN89CalPage(this);
183 _pages.push_back(cal_page);
184 KLN89Page* set_page = new KLN89SetPage(this);
185 _pages.push_back(set_page);
186 KLN89Page* oth_page = new KLN89OthPage(this);
187 _pages.push_back(oth_page);
188 _nPages = _pages.size();
192 _dir_page = new KLN89DirPage(this);
193 _nrst_page = new KLN89NrstPage(this);
195 _activePage = apt_page;
201 _maxFlightPlans = 26;
202 for(unsigned int i=0; i<_maxFlightPlans; ++i) {
203 GPSFlightPlan* fp = new GPSFlightPlan;
204 fp->waypoints.clear();
205 _flightPlans.push_back(fp);
207 _activeFP = _flightPlans[0];
209 _entJump = _clrJump = -1;
210 _jumpRestoreCrsr = false;
219 _mapHeadingUpdateTimer = 0.0;
223 //_mapScaleIndex = 20;
224 _mapScaleIndex = 7; // I think that the above is more accurate for no-flightplan default, but this is more sane for initial testing!
225 _mapScaleAuto = true;
227 // Configuration. Eventually this may be user-achivable in order that settings can be persistent between sessions.
228 _suaAlertEnabled = false;
229 _altAlertEnabled = false;
230 _minDisplayBrightness = 4;
231 _defaultFirstChar = 'A';
233 // Mega-hack - hardwire airport town and state names for the FG base area since we don't have any data for these at the moment
234 // TODO - do this better one day!
235 _airportTowns["KSFO"] = "San Francisco";
236 _airportTowns["KSQL"] = "San Carlos";
237 _airportTowns["KPAO"] = "Palo Alto";
238 _airportTowns["KNUQ"] = "Mountain View";
239 _airportTowns["KSJC"] = "San Jose";
240 _airportTowns["KRHV"] = "San Jose";
241 _airportTowns["E16"] = "San Martin";
242 _airportTowns["KWVI"] = "Watsonville";
243 _airportTowns["KOAK"] = "Oakland";
244 _airportTowns["KHWD"] = "Hayward";
245 _airportTowns["KLVK"] = "Livermore";
246 _airportTowns["KCCR"] = "Concord";
247 _airportTowns["KTCY"] = "Tracy";
248 _airportTowns["KSCK"] = "Stockton";
249 _airportTowns["KHAF"] = "Half Moon Bay";
251 _airportStates["KSFO"] = "CA";
252 _airportStates["KSQL"] = "CA";
253 _airportStates["KPAO"] = "CA";
254 _airportStates["KNUQ"] = "CA";
255 _airportStates["KSJC"] = "CA";
256 _airportStates["KRHV"] = "CA";
257 _airportStates["E16"] = "CA";
258 _airportStates["KWVI"] = "CA";
259 _airportStates["KOAK"] = "CA";
260 _airportStates["KHWD"] = "CA";
261 _airportStates["KLVK"] = "CA";
262 _airportStates["KCCR"] = "CA";
263 _airportStates["KTCY"] = "CA";
264 _airportStates["KSCK"] = "CA";
265 _airportStates["KHAF"] = "CA";
269 for(unsigned int i=0; i<_pages.size(); ++i) {
276 for(unsigned int i=0; i<_maxFlightPlans; ++i) {
278 delete _flightPlans[i];
283 fgTie("/instrumentation/gps/message-alert", this, &KLN89::GetMsgAlert);
287 void KLN89::unbind() {
288 fgUntie("/instrumentation/gps/message-alert");
293 globals->get_commands()->addCommand("kln89_msg_pressed", do_kln89_msg_pressed);
294 globals->get_commands()->addCommand("kln89_obs_pressed", do_kln89_obs_pressed);
295 globals->get_commands()->addCommand("kln89_alt_pressed", do_kln89_alt_pressed);
296 globals->get_commands()->addCommand("kln89_nrst_pressed", do_kln89_nrst_pressed);
297 globals->get_commands()->addCommand("kln89_dto_pressed", do_kln89_dto_pressed);
298 globals->get_commands()->addCommand("kln89_clr_pressed", do_kln89_clr_pressed);
299 globals->get_commands()->addCommand("kln89_ent_pressed", do_kln89_ent_pressed);
300 globals->get_commands()->addCommand("kln89_crsr_pressed", do_kln89_crsr_pressed);
301 globals->get_commands()->addCommand("kln89_knob1left1", do_kln89_knob1left1);
302 globals->get_commands()->addCommand("kln89_knob1right1", do_kln89_knob1right1);
303 globals->get_commands()->addCommand("kln89_knob2left1", do_kln89_knob2left1);
304 globals->get_commands()->addCommand("kln89_knob2right1", do_kln89_knob2right1);
309 void KLN89::update(double dt) {
310 // Run any positional calc's required first
313 // Set the display brightness. This should be reduced in response to falling light
314 // (i.e. nighttime), or the user covering the photocell that detects the light level.
315 // At the moment I don't know how to detect nighttime or actual light level, so only
316 // respond to the photocell being obscured.
317 // TODO - reduce the brightness in response to nighttime / lowlight.
318 float rgba[4] = {1.0, 0.0, 0.0, 1.0};
319 if(fgGetBool("/instrumentation/kln89/photocell-obscured")) {
320 rgba[0] -= (9 - _minDisplayBrightness) * 0.05;
322 _instrument->SetPixelColor(rgba);
337 _mapHeadingUpdateTimer += dt;
338 if(_mapHeadingUpdateTimer > 1.0) {
340 _mapHeadingUpdateTimer = 0.0;
343 _instrument->Flush();
344 _instrument->DrawBackground();
347 if(_messageStack.empty()) {
348 DrawText("No Message", 0, 5, 2);
350 // TODO - parse the message string for special strings that indicate degrees signs etc!
351 DrawText(*_messageStack.begin(), 0, 0, 3);
355 if(!_messageStack.empty()) {
360 // Draw the indicator that shows which page we are on.
361 if(_curPage == 6 && _activePage->GetSubPage() == 3) {
362 // Don't draw the bar on the nav-4 page
363 } else if((_activePage != _nrst_page) && (_activePage != _dir_page) && (!_dispMsg)) {
364 // Don't draw the bar on the NRST, DTO or MSG pages
368 _activePage->Update(dt);
371 void KLN89::CreateDefaultFlightPlans() {
372 // TODO - read these in from preferences.xml or similar instead!!!!
373 // Create some hardwired default flightplans for testing.
375 vector<GPSWpType> wps;
379 ids.push_back("KLSN");
380 wps.push_back(GPS_WP_APT);
381 ids.push_back("VOLTA");
382 wps.push_back(GPS_WP_INT);
383 ids.push_back("C83");
384 wps.push_back(GPS_WP_APT);
385 CreateFlightPlan(_flightPlans[5], ids, wps);
389 ids.push_back("KCCR");
390 wps.push_back(GPS_WP_APT);
391 ids.push_back("KHAF");
392 wps.push_back(GPS_WP_APT);
393 CreateFlightPlan(_flightPlans[4], ids, wps);
397 ids.push_back("KLVK");
398 wps.push_back(GPS_WP_APT);
399 ids.push_back("OAK");
400 wps.push_back(GPS_WP_VOR);
401 ids.push_back("PORTE");
402 wps.push_back(GPS_WP_INT);
403 ids.push_back("KHAF");
404 wps.push_back(GPS_WP_APT);
405 CreateFlightPlan(_flightPlans[3], ids, wps);
409 ids.push_back("KDPA");
410 wps.push_back(GPS_WP_APT);
411 ids.push_back("OBK");
412 wps.push_back(GPS_WP_VOR);
413 ids.push_back("ENW");
414 wps.push_back(GPS_WP_VOR);
415 ids.push_back("KRAC");
416 wps.push_back(GPS_WP_APT);
417 CreateFlightPlan(_flightPlans[2], ids, wps);
418 //cout << "Size of FP2 WP list is " << _flightPlans[2]->waypoints.size() << '\n';
422 ids.push_back("KSFO");
423 ids.push_back("KOAK");
424 wps.push_back(GPS_WP_APT);
425 wps.push_back(GPS_WP_APT);
426 CreateFlightPlan(_flightPlans[1], ids, wps);
430 //ids.push_back("KOSH");
431 ids.push_back("KSFO");
432 ids.push_back("KHAF");
433 ids.push_back("OSI");
434 ids.push_back("KSQL");
435 //ids.push_back("KPAO");
436 //ids.push_back("KHWD");
437 wps.push_back(GPS_WP_APT);
438 wps.push_back(GPS_WP_APT);
439 wps.push_back(GPS_WP_VOR);
440 wps.push_back(GPS_WP_APT);
441 //wps.push_back(GPS_WP_APT);
442 //wps.push_back(GPS_WP_APT);
443 CreateFlightPlan(_flightPlans[0], ids, wps);
448 ids.push_back("KLVK");
449 ids.push_back("KHWD");
450 wps.push_back(GPS_WP_APT);
451 wps.push_back(GPS_WP_APT);
452 CreateFlightPlan(_flightPlans[0], ids, wps);
456 void KLN89::Knob1Right1() {
457 if(_mode == KLN89_MODE_DISP) {
458 _activePage->LooseFocus();
459 if(_cleanUpPage >= 0) {
460 _pages[(unsigned int)_cleanUpPage]->CleanUp();
464 if(_curPage >= _pages.size()) _curPage = 0;
465 _activePage = _pages[_curPage];
467 _activePage->Knob1Right1();
472 void KLN89::Knob1Left1() {
473 if(_mode == KLN89_MODE_DISP) {
474 _activePage->LooseFocus();
475 if(_cleanUpPage >= 0) {
476 _pages[(unsigned int)_cleanUpPage]->CleanUp();
480 _curPage = _pages.size() - 1;
484 _activePage = _pages[_curPage];
486 _activePage->Knob1Left1();
491 void KLN89::Knob2Left1() {
492 _activePage->Knob2Left1();
495 void KLN89::Knob2Right1() {
496 _activePage->Knob2Right1();
499 void KLN89::CrsrPressed() {
501 // CRSR cannot be switched off on nrst page.
502 if(_activePage == _nrst_page) { return; }
503 // CRSR is always off when inner-knob is out on nav4 page.
504 if(_curPage == 6 && _activePage->GetSubPage() == 3 && fgGetBool("/instrumentation/kln89/scan-pull")) { return; }
505 if(_cleanUpPage >= 0) {
506 _pages[(unsigned int)_cleanUpPage]->CleanUp();
509 _jumpRestoreCrsr = false;
510 _entJump = _clrJump = -1;
511 ((KLN89Page*)_activePage)->SetEntInvert(false);
512 if(_mode == KLN89_MODE_DISP) {
513 _mode = KLN89_MODE_CRSR;
514 _activePage->CrsrPressed();
516 _mode = KLN89_MODE_DISP;
517 _activePage->CrsrPressed();
522 void KLN89::EntPressed() {
525 // one of the data pages. Signal ent pressed to it here, and ent pressed to the call back page a few lines further down.
526 // Ie. 2 ent pressed signals in this case is deliberate.
527 _activePage->EntPressed();
530 _activePage = _pages[(unsigned int)_entJump];
531 if(_jumpRestoreCrsr) _mode = KLN89_MODE_CRSR;
532 _entJump = _clrJump = -1;
534 if(_activePage == _dir_page) {
535 _dir_page->EntPressed();
536 _mode = KLN89_MODE_DISP;
537 _activePage = _pages[_curPage];
539 _activePage->EntPressed();
543 void KLN89::ClrPressed() {
546 _activePage = _pages[(unsigned int)_clrJump];
547 if(_jumpRestoreCrsr) _mode = KLN89_MODE_CRSR;
548 _entJump = _clrJump = -1;
550 _activePage->ClrPressed();
553 void KLN89::DtoPressed() {
554 if(_activePage != _dir_page) {
555 // Figure out which waypoint the dir page should display, according to the following rules:
556 // 1. If the FPL 0 page is displayed AND the cursor is over one of the waypoints, display that waypoint.
557 // 2. If the NAV 4 page is displayed with the inner knob pulled out, display the waypoint highlighted in the lower RH corner of the nav page.
558 // 3. If any of APT, VOR, NDB, INT, USR or ACT pages is displayed then display the waypoint being viewed.
559 // 4. If none of the above, display the active waypoint, unless the active waypoint is the MAP of an approach and it has been flown past
560 // (no waypoint sequence past the MAP), in which case display the first waypoint of the missed approach procedure.
561 // 5. If none of the above (i.e. no active waypoint) then display blanks.
563 // APT, VOR, NDB, INT, USR or ACT
564 if(!_activePage->GetId().empty()) { // Guard against no user waypoints defined
565 _dir_page->SetId(_activePage->GetId());
567 _dir_page->SetId(_activeWaypoint.id);
569 } else if(_curPage == 6 && _activePage->GetSubPage() == 3 && fgGetBool("/instrumentation/kln89/scan-pull") && _activeFP->waypoints.size()) {
571 _dir_page->SetId(((KLN89NavPage*)_activePage)->GetNav4WpId());
572 } else if(_curPage == 7 && _activePage->GetSubPage() == 0 && _mode == KLN89_MODE_CRSR) {
574 if(!_activePage->GetId().empty()) {
575 //cout << "Not empty!!!\n";
576 _dir_page->SetId(_activePage->GetId());
578 //cout << "empty :-(\n";
579 _dir_page->SetId(_activeWaypoint.id);
582 _dir_page->SetId(_activeWaypoint.id);
584 // This need to come after the bit before otherwise the FPL or NAV4 page clears their current ID when it looses focus.
585 _activePage->LooseFocus();
586 _activePage = _dir_page;
587 _mode = KLN89_MODE_CRSR;
591 void KLN89::NrstPressed() {
592 if(_activePage != _nrst_page) {
593 _activePage->LooseFocus(); // TODO - check whether we should call loose focus here
594 _lastActivePage = _activePage;
595 _activePage = _nrst_page;
597 _mode = KLN89_MODE_CRSR;
599 _activePage = _lastActivePage;
604 void KLN89::AltPressed() {}
606 void KLN89::OBSPressed() {
609 if(!fgGetBool("/instrumentation/nav/slaved-to-gps")) {
610 // NOTE: this only applies to ORS 02 firmware, in ORS 01
611 // CRSR mode is not automatically set when OBS is started.
612 _mode = KLN89_MODE_CRSR;
614 _activePage->OBSPressed();
618 void KLN89::MsgPressed() {
619 // TODO - handle persistent messages such as SUA alerting.
620 // (The message annunciation flashes before first view, but afterwards remains continuously lit with the message available
621 // until the potential conflict no longer pertains).
622 if(_dispMsg && _messageStack.size()) {
623 _messageStack.pop_front();
625 _dispMsg = !_dispMsg;
628 void KLN89::ToggleOBSMode() {
629 DCLGPS::ToggleOBSMode();
632 void KLN89::DtoInitiate(const string& id) {
634 // Set the current page to NAV1
636 _activePage = _pages[_curPage];
637 _activePage->SetSubPage(0);
638 // TODO - need to output a scratchpad message with the new course, but we don't know it yet!
639 // Call the base class to actually initiate the DTO.
640 DCLGPS::DtoInitiate(id);
643 void KLN89::SetMinDisplayBrightness(int n) {
644 _minDisplayBrightness = n;
645 if(_minDisplayBrightness < 1) _minDisplayBrightness = 1;
646 if(_minDisplayBrightness > 9) _minDisplayBrightness = 9;
649 void KLN89::DecrementMinDisplayBrightness() {
650 _minDisplayBrightness--;
651 if(_minDisplayBrightness < 1) _minDisplayBrightness = 1;
654 void KLN89::IncrementMinDisplayBrightness() {
655 _minDisplayBrightness++;
656 if(_minDisplayBrightness > 9) _minDisplayBrightness = 9;
659 void KLN89::DrawBar(int page) {
660 int px = 1 + (page * 15);
662 for(int i=0; i<7; ++i) {
663 // Ugh - this is crude and inefficient!
664 _instrument->DrawPixel(px+i, py);
665 _instrument->DrawPixel(px+i, py+1);
669 // Convert moving map to instrument co-ordinates
670 void KLN89::MapToInstrument(int &x, int &y) {
671 x += _xBorder + _xFieldBorder[2] + _xFieldStart[2];
674 // Draw a pixel specified in instrument co-ords, but clipped to the map region
675 //void KLN89::DrawInstrMapPixel(int x, int y) {
678 // Clip, translate and draw a map pixel
679 // If we didn't need per-pixel clipping, it would be cheaper to translate object rather than pixel positions.
680 void KLN89::DrawMapPixel(int x, int y, bool invert) {
681 if(x < 0 || x > 111 || y < 0 || y > 39) return;
682 x += _xBorder + _xFieldBorder[2] + _xFieldStart[2];
683 _instrument->DrawPixel(x, y, invert);
687 // HACK - use something FG provides
688 static double gps_min(const double &a, const double &b) {
689 return(a <= b ? a : b);
692 static double gps_max(const double &a, const double &b) {
693 return(a >= b ? a : b);
696 void KLN89::UpdateMapHeading() {
697 switch(_mapOrientation) {
702 _mapHeading = _dtkTrue;
705 _mapHeading = _track;
710 // The screen area allocated to the moving map is 111 x 40 pixels.
711 // In North up mode, the user position marker is at 57, 20. (Map co-ords).
712 void KLN89::DrawMap(bool draw_avs) {
713 // Set the clipping region to the moving map part of the display
714 int xstart = _xBorder + _xFieldBorder[2] + _xFieldStart[2];
715 _instrument->SetClipRegion(xstart, 0, xstart + 110, 39);
717 _mapScaleUnits = (int)_distUnits;
718 _mapScale = (double)(KLN89MapScales[_mapScaleUnits][_mapScaleIndex]);
720 //cout << "Map scale = " << _mapScale << '\n';
722 double mapScaleMeters = _mapScale * (_mapScaleUnits == 0 ? SG_NM_TO_METER : 1000);
724 // TODO - use an aligned projection when either DTK or TK up!
726 FGATCAlignedProjection mapProj(SGGeod::fromRad(_gpsLon, _gpsLat), _mapHeading);
728 FGKln89AlignedProjection mapProj(SGGeod::fromRad(_gpsLon, _gpsLat), _mapHeading);
730 double meter_per_pix = (_mapOrientation == 0 ? mapScaleMeters / 20.0f : mapScaleMeters / 29.0f);
731 SGGeod bottomLeft = mapProj.ConvertFromLocal(SGVec3d(gps_max(-57.0 * meter_per_pix, -50000), gps_max((_mapOrientation == 0 ? -20.0 * meter_per_pix : -11.0 * meter_per_pix), -25000), 0.0));
732 SGGeod topRight = mapProj.ConvertFromLocal(SGVec3d(gps_min(54.0 * meter_per_pix, 50000), gps_min((_mapOrientation == 0 ? 20.0 * meter_per_pix : 29.0 * meter_per_pix), 25000), 0.0));
737 // Draw Airport labels first (but not one's that are waypoints)
738 // Draw Airports first (but not one's that are waypoints)
739 // Ditto for VORs (not sure if SUA/VOR/Airport ordering is important or not).
743 // Then waypoint labels (not sure if this should be before or after waypoints)
745 // Annotation then gets drawn by Nav page, NOT this function.
747 if(_drawApt && draw_avs) {
749 bool have_apt = _overlays->FindArpByRegion(&apt, bottomLeft.lat(), bottomLeft.lon(), topRight.lat(), topRight.lon());
750 //cout << "Vors enclosed are: ";
751 // Draw all the labels first...
752 for(unsigned int i=0; i<apt.size(); ++i) {
753 //cout << nav[i]->id << ' ';
754 Point3D p = mapProj.ConvertToLocal(Point3D(apt[i]->lon * SG_RADIANS_TO_DEGREES, apt[i]->lat * SG_RADIANS_TO_DEGREES, 0.0));
755 //cout << p << " .... ";
756 int mx = int(p.x() / meter_per_pix) + 56;
757 int my = int(p.y() / meter_per_pix) + (_mapOrientation == 0 ? 19 : 10);
758 //cout << "mx = " << mx << ", my = " << my << '\n';
759 bool right_align = (p.x() < 0.0);
760 DrawLabel(apt[i]->id, mx + (right_align ? -2 : 3), my + (p.y() < 0.0 ? -7 : 3), right_align);
761 // I think that we probably should have -1 in the right_align case above to match the real life instrument.
763 // ...and then all the Apts.
764 for(unsigned int i=0; i<apt.size(); ++i) {
765 //cout << nav[i]->id << ' ';
766 Point3D p = mapProj.ConvertToLocal(Point3D(apt[i]->lon * SG_RADIANS_TO_DEGREES, apt[i]->lat * SG_RADIANS_TO_DEGREES, 0.0));
767 //cout << p << " .... ";
768 int mx = int(p.x() / meter_per_pix) + 56;
769 int my = int(p.y() / meter_per_pix) + (_mapOrientation == 0 ? 19 : 10);
770 //cout << "mx = " << mx << ", my = " << my << '\n';
777 if(_drawVOR && draw_avs) {
778 Overlays::nav_array_type nav;
779 bool have_vor = _overlays->FindVorByRegion(&nav, bottomLeft.lat(), bottomLeft.lon(), topRight.lat(), topRight.lon());
780 //cout << "Vors enclosed are: ";
781 // Draw all the labels first...
782 for(unsigned int i=0; i<nav.size(); ++i) {
783 //cout << nav[i]->id << ' ';
784 Point3D p = mapProj.ConvertToLocal(Point3D(nav[i]->lon * SG_RADIANS_TO_DEGREES, nav[i]->lat * SG_RADIANS_TO_DEGREES, 0.0));
785 //cout << p << " .... ";
786 int mx = int(p.x() / meter_per_pix) + 56;
787 int my = int(p.y() / meter_per_pix) + (_mapOrientation == 0 ? 19 : 10);
788 //cout << "mx = " << mx << ", my = " << my << '\n';
789 bool right_align = (p.x() < 0.0);
790 DrawLabel(nav[i]->id, mx + (right_align ? -2 : 3), my + (p.y() < 0.0 ? -7 : 3), right_align);
791 // I think that we probably should have -1 in the right_align case above to match the real life instrument.
793 // ...and then all the VORs.
794 for(unsigned int i=0; i<nav.size(); ++i) {
795 //cout << nav[i]->id << ' ';
796 Point3D p = mapProj.ConvertToLocal(Point3D(nav[i]->lon * SG_RADIANS_TO_DEGREES, nav[i]->lat * SG_RADIANS_TO_DEGREES, 0.0));
797 //cout << p << " .... ";
798 int mx = int(p.x() / meter_per_pix) + 56;
799 int my = int(p.y() / meter_per_pix) + (_mapOrientation == 0 ? 19 : 10);
800 //cout << "mx = " << mx << ", my = " << my << '\n';
808 if(_activeFP->waypoints.size() > 1) {
809 vector<int> xvec, yvec, qvec; // qvec stores the quadrant that each waypoint label should
810 // be drawn in (relative to the waypoint).
811 // 1 = NE, 2 = SE, 3 = SW, 4 = NW.
812 double save_h = 0.0; // Each pass, save a heading from the previous one for label quadrant determination.
813 bool drawTrack = true;
814 for(unsigned int i=1; i<_activeFP->waypoints.size(); ++i) {
815 GPSWaypoint* wp0 = _activeFP->waypoints[i-1];
816 GPSWaypoint* wp1 = _activeFP->waypoints[i];
817 SGVec3d p0 = mapProj.ConvertToLocal(SGGeod::fromRad(wp0->lon, wp0->lat));
818 SGVec3d p1 = mapProj.ConvertToLocal(SGGeod::fromRad(wp1->lon, wp1->lat));
819 int mx0 = int(p0.x() / meter_per_pix + 0.5) + 56;
820 int my0 = int(p0.y() / meter_per_pix + 0.5) + (_mapOrientation == 0 ? 19 : 10);
821 int mx1 = int(p1.x() / meter_per_pix + 0.5) + 56;
822 int my1 = int(p1.y() / meter_per_pix + 0.5) + (_mapOrientation == 0 ? 19 : 10);
826 double h = GetGreatCircleCourse(wp0->lat, wp0->lon, wp1->lat, wp1->lon) * SG_RADIANS_TO_DEGREES;
827 // Adjust for map orientation
829 qvec.push_back(GetLabelQuadrant(h));
830 //cout << "i = " << i << ", h = " << h << ", qvec[0] = " << qvec[0] << '\n';
834 if(drawTrack) { DrawLine(mx0, my0, mx1, my1); }
836 double h = GetGreatCircleCourse(wp0->lat, wp0->lon, wp1->lat, wp1->lon) * SG_RADIANS_TO_DEGREES;
837 // Adjust for map orientation
839 qvec.push_back(GetLabelQuadrant(save_h, h));
841 save_h = GetGreatCircleCourse(wp1->lat, wp1->lon, wp0->lat, wp0->lon) * SG_RADIANS_TO_DEGREES;
842 // Adjust for map orientation
843 save_h -= _mapHeading;
844 if(i == _activeFP->waypoints.size() - 1) {
845 qvec.push_back(GetLabelQuadrant(save_h));
847 // Don't draw flight track beyond the missed approach point of an approach
848 if(_approachLoaded) {
849 //cout << "Waypoints are " << wp0->id << " and " << wp1->id << '\n';
850 //cout << "Types are " << wp0->appType << " and " << wp1->appType << '\n';
851 if(wp1->appType == GPS_MAP) {
856 // ASSERT(xvec.size() == yvec.size() == qvec.size() == _activeFP->waypoints.size());
857 for(unsigned int i=0; i<xvec.size(); ++i) {
858 DrawWaypoint(xvec[i], yvec[i]);
859 bool right_align = (qvec[i] > 2);
860 bool top = (qvec[i] == 1 || qvec[i] == 4);
861 // TODO - not sure if labels should be drawn in sequence with waypoints and flightpaths,
862 // or all before or all afterwards. Doesn't matter a huge deal though.
863 DrawLabel(_activeFP->waypoints[i]->id, xvec[i] + (right_align ? -2 : 3), yvec[i] + (top ? 3 : -7), right_align);
868 if(_mapOrientation == 0) {
871 } else if(_mapOrientation == 1) {
874 } else if(_mapOrientation == 2) {
879 // TODO - don't know what to do here!
882 // And finally, reset the clip region to stop the rest of the code going pear-shaped!
883 _instrument->ResetClipRegion();
886 // Get the quadrant to draw the label of the start or end waypoint (i.e. one with only one track from it).
887 // Heading specified FROM the waypoint.
891 int KLN89::GetLabelQuadrant(double h) {
892 while(h < 0.0) h += 360.0;
893 while(h > 360.0) h -= 360.0;
894 if(h < 90.0) return(3);
895 if(h < 180.0) return(4);
896 if(h < 270.0) return(1);
900 // Get the quadrant to draw the label of an en-route waypoint,
901 // with BOTH tracks specified as headings FROM the waypoint.
905 int KLN89::GetLabelQuadrant(double h1, double h2) {
906 while(h1 < 0.0) h1 += 360.0;
907 while(h1 > 360.0) h1 -= 360.0;
908 while(h2 < 0.0) h2 += 360.0;
909 while(h2 > 360.0) h2 -= 360.0;
910 double max_min_diff = 0.0;
912 for(int i=0; i<4; ++i) {
913 double h = 45 + (90 * i);
914 double diff1 = fabs(h - h1);
915 if(diff1 > 180) diff1 = 360 - diff1;
916 double diff2 = fabs(h - h2);
917 if(diff2 > 180) diff2 = 360 - diff2;
918 double min_diff = gps_min(diff1, diff2);
919 if(min_diff > max_min_diff) {
920 max_min_diff = min_diff;
924 //cout << "GetLabelQuadrant, h1 = " << h1 << ", h2 = " << h2 << ", quad = " << quad << '\n';
928 // Draw the diamond style of user pos
938 void KLN89::DrawUser1(int x, int y) {
939 MapToInstrument(x, y);
940 int min_j = 0, max_j = 0;
941 for(int i=-3; i<=3; ++i) {
942 for(int j=min_j; j<=max_j; ++j) {
943 _instrument->DrawPixel(x+j, y+i, (j == min_j || j == max_j ? true : false));
955 // Draw the airplane style of user pos
956 // Define the origin to be the midpoint of the *fuselage*
957 void KLN89::DrawUser2(int x, int y) {
958 MapToInstrument(x, y);
960 // Draw the background as three black quads first
961 _instrument->DrawQuad(x-2, y-3, x+2, y-1, true);
962 _instrument->DrawQuad(x-3, y, x+3, y+2, true);
963 _instrument->DrawQuad(x-1, y+3, x+1, y+3, true);
966 for(int j=y-2; j<=y+2; ++j) {
967 _instrument->DrawPixel(x, j);
969 for(int i=x-1; i<=x+1; ++i) {
970 _instrument->DrawPixel(i, y-2);
972 for(int i=x-2; i<=x+2; ++i) {
973 _instrument->DrawPixel(i, y+1);
976 _instrument->DrawQuad(x, y-2, x, y+2);
977 _instrument->DrawQuad(x-1, y-2, x+1, y-2);
978 _instrument->DrawQuad(x-2, y+1, x+2, y+1);
982 // Draw an airport symbol on the moving map
990 void KLN89::DrawApt(int x, int y) {
991 MapToInstrument(x, y);
995 for(i=x-1; i<=x+1; ++i) _instrument->DrawPixel(i, j, true);
997 for(i=x-2; i<=x+2; ++i) _instrument->DrawPixel(i, j, (i != x ? true : false));
999 for(i=x-2; i<=x+2; ++i) _instrument->DrawPixel(i, j, (abs(i - x) > 1 ? true : false));
1001 for(i=x-2; i<=x+2; ++i) _instrument->DrawPixel(i, j, (i != x ? true : false));
1003 for(i=x-1; i<=x+1; ++i) _instrument->DrawPixel(i, j, true);
1006 // Draw a waypoint on the moving map
1014 void KLN89::DrawWaypoint(int x, int y) {
1015 MapToInstrument(x, y);
1016 _instrument->SetDebugging(true);
1018 // Draw black background
1019 _instrument->DrawQuad(x-2, y-2, x+2, y+2, true);
1021 // Draw the coloured square
1023 for(int i=x-1; i<=x+1; ++i) {
1024 for(int j=y-1; j<=y+1; ++j) {
1025 _instrument->DrawPixel(i, j);
1029 _instrument->DrawQuad(x-1, y-1, x+1, y+1);
1031 _instrument->SetDebugging(false);
1034 // Draw a VOR on the moving map
1042 void KLN89::DrawVOR(int x, int y) {
1043 // Cheat - draw a waypoint and then a black pixel in the middle.
1044 // Need to call Waypoint draw *before* translating co-ords.
1046 MapToInstrument(x, y);
1047 _instrument->DrawPixel(x, y, true);
1050 // Draw a line on the moving map
1051 void KLN89::DrawLine(int x1, int y1, int x2, int y2) {
1052 MapToInstrument(x1, y1);
1053 MapToInstrument(x2, y2);
1054 _instrument->DrawLine(x1, y1, x2, y2);
1057 void KLN89::DrawMapUpArrow(int x, int y) {
1058 MapToInstrument(x, y);
1060 for(int j=0; j<7; ++j) {
1061 _instrument->DrawPixel(x + 2, y + j);
1064 _instrument->DrawQuad(x+2, y, x+2, y+6);
1066 _instrument->DrawPixel(x, y+4);
1067 _instrument->DrawPixel(x+1, y+5);
1068 _instrument->DrawPixel(x+3, y+5);
1069 _instrument->DrawPixel(x+4, y+4);
1072 // Draw a quad on the moving map
1073 void KLN89::DrawMapQuad(int x1, int y1, int x2, int y2, bool invert) {
1074 MapToInstrument(x1, y1);
1075 MapToInstrument(x2, y2);
1076 _instrument->DrawQuad(x1, y1, x2, y2, invert);
1079 // Draw an airport or waypoint label on the moving map
1080 // Specify position by the map pixel co-ordinate of the left or right, bottom, of the *visible* portion of the label.
1081 // The black background quad will automatically overlap this by 1 pixel.
1082 void KLN89::DrawLabel(const string& s, int x1, int y1, bool right_align) {
1083 MapToInstrument(x1, y1);
1085 for(unsigned int i=0; i<s.size(); ++i) {
1087 x1 += DrawSmallChar(c, x1, y1);
1091 for(int i=(int)(s.size()-1); i>=0; --i) {
1093 x1 -= DrawSmallChar(c, x1, y1, right_align);
1099 void KLN89::DrawCDI() {
1101 for(int i=0; i<5; ++i) {
1102 DrawSpecialChar(2, 2, 3+i, 2);
1103 DrawSpecialChar(1, 2, 9+i, 2);
1107 int px = 8 * 7 + _xBorder + _xFieldBorder[field] + _xFieldStart[field] + 2;
1108 int py = 2 * 9 + _yBorder + _yFieldBorder[field] + _yFieldStart[field];
1111 // Every 7 pixels deflection left or right is one dot on the scale, and hence 1/5 FSD.
1112 // Maximum deflection is 37 pixels left, or 38 pixels right !?!
1113 double xtd = CalcCrossTrackDeviation();
1115 if(_cdiScaleTransition) {
1116 double dots = (xtd / _currentCdiScale) * 5.0;
1117 deflect = (int)(dots * 7.0 * -1.0);
1118 // TODO - for all these I think I should add 0.5 before casting to int, and *then* multiply by -1. Possibly!
1120 if(0 == _currentCdiScaleIndex) { // 5.0nm FSD => 1 nm per dot => 7 pixels per nm.
1121 deflect = (int)(xtd * 7.0 * -1.0); // The -1.0 is because we move the 'needle' indicating the course, not the plane.
1122 } else if(1 == _currentCdiScaleIndex) {
1123 deflect = (int)(xtd * 35.0 * -1.0);
1124 } else { // 0.3 == _cdiScale
1125 deflect = (int)(xtd * 116.6666666667 * -1.0);
1128 if(deflect > 38) deflect = 38;
1129 if(deflect < -37) deflect = -37;
1131 for(int j=0; j<9; ++j) {
1132 _instrument->DrawPixel(px + deflect, py+j);
1133 _instrument->DrawPixel(px + deflect + 1, py+j);
1136 _instrument->DrawQuad(px + deflect, py, px + deflect + 1, py + 8);
1139 // To/From indicator
1142 for(int j=4; j>=0; --j) {
1144 for(int i=0; i<k; ++i) {
1145 _instrument->DrawPixel(px+j+i, (_headingBugTo ? py+j : py+4-j));
1146 // At the extremities, draw the outlining dark pixel
1147 if(i == 0 || i == k-1) {
1148 _instrument->DrawPixel(px+j+i, (_headingBugTo ? py+j+1 : py+3-j), true);
1154 void KLN89::DrawLegTail(int py) {
1155 int px = 0 * 7 + _xBorder + _xFieldBorder[2] + _xFieldStart[2];
1156 py = py * 9 + _yBorder + _yFieldBorder[2] + _yFieldStart[2];
1160 py++; // Hack - not sure if this represents a border issue.
1162 for(int i=0; i<9; ++i) _instrument->DrawPixel(px, py+i);
1163 for(int i2=0; i2<5; ++i2) _instrument->DrawPixel(px+i2, py+9);
1166 void KLN89::DrawLongLegTail(int py) {
1167 int px = 0 * 7 + _xBorder + _xFieldBorder[2] + _xFieldStart[2];
1168 py = py * 9 + _yBorder + _yFieldBorder[2] + _yFieldStart[2];
1172 py++; // Hack - not sure if this represents a border issue.
1174 for(int i=0; i<18; ++i) _instrument->DrawPixel(px, py+i);
1175 for(int i2=0; i2<5; ++i2) _instrument->DrawPixel(px+i2, py+18);
1178 void KLN89::DrawHalfLegTail(int py) {
1181 void KLN89::DrawDivider() {
1182 int px = _xFieldStart[2] - 1;
1184 for(int i=0; i<36; ++i) {
1185 _instrument->DrawPixel(px, py+i);
1189 void KLN89::DrawEnt(int field, int px, int py) {
1190 px = px * 7 + _xBorder + _xFieldBorder[field] + _xFieldStart[field];
1191 py = py * 9 + _yBorder + _yFieldBorder[field] + _yFieldStart[field] + 1;
1193 px++; // Not sure why we need px++, but it seems to work!
1197 for(int i=0; i<5; ++i) _instrument->DrawPixel(px, py+i);
1198 _instrument->DrawPixel(px+1, py);
1199 _instrument->DrawPixel(px+2, py);
1200 _instrument->DrawPixel(px+1, py+2);
1201 _instrument->DrawPixel(px+1, py+4);
1202 _instrument->DrawPixel(px+2, py+4);
1206 for(int i=0; i<4; ++i) _instrument->DrawPixel(px, py+i);
1207 _instrument->DrawPixel(px+1, py+2);
1208 _instrument->DrawPixel(px+2, py+1);
1209 for(int i=0; i<4; ++i) _instrument->DrawPixel(px+3, py+i);
1213 _instrument->DrawPixel(px, py+3);
1214 for(int i=0; i<4; ++i) _instrument->DrawPixel(px+1, py+i);
1215 _instrument->DrawPixel(px+2, py+3);
1218 void KLN89::DrawMessageAlert() {
1219 // TODO - draw the proper message indicator
1221 int px = _xBorder + _xFieldBorder[1] + _xFieldStart[1];
1222 int py = 1 * 9 + _yBorder + _yFieldBorder[1] + _yFieldStart[1] + 1;
1224 px++; // Not sure why we need px++, but it seems to work!
1227 DrawText(" ", 1, 0, 1, false, 99);
1228 _instrument->DrawQuad(px+1, py-1, px+2, py+5, true);
1229 _instrument->DrawQuad(px+3, py+3, px+3, py+5, true);
1230 _instrument->DrawQuad(px+4, py+2, px+4, py+4, true);
1231 _instrument->DrawQuad(px+5, py+1, px+6, py+3, true);
1232 _instrument->DrawQuad(px+7, py+2, px+7, py+4, true);
1233 _instrument->DrawQuad(px+8, py+3, px+8, py+5, true);
1234 _instrument->DrawQuad(px+9, py-1, px+10, py+5, true);
1238 void KLN89::Underline(int field, int px, int py, int len) {
1239 px = px * 7 + _xBorder + _xFieldBorder[field] + _xFieldStart[field];
1240 py = py * 9 + _yBorder + _yFieldBorder[field] + _yFieldStart[field];
1241 for(int i=0; i<(len*7); ++i) {
1242 _instrument->DrawPixel(px, py);
1247 void KLN89::DrawKPH(int field, int cx, int cy) {
1249 int px = cx * 7 + _xBorder + _xFieldBorder[field] + _xFieldStart[field];
1250 int py = cy * 9 + _yBorder + _yFieldBorder[field] + _yFieldStart[field];
1255 for(int j=0; j<=4; ++j) {
1256 _instrument->DrawPixel(px, py + 2 +j);
1257 _instrument->DrawPixel(px + 8, py + j);
1259 _instrument->DrawPixel(px + 11, py + j);
1260 _instrument->DrawPixel(px + 9 + j, py + 2);
1264 for(int i=0; i<=6; ++i) {
1266 _instrument->DrawPixel(px + 1 + i, py + 4 + i);
1267 _instrument->DrawPixel(px + 1 + i, py + (4 - i));
1269 _instrument->DrawPixel(px + 2 + i, py + i);
1273 void KLN89::DrawDTO(int field, int cx, int cy) {
1274 DrawSpecialChar(6, field, cx, cy);
1275 if(!(_waypointAlert && _blink)) {
1276 DrawSpecialChar(3, field, cx+1, cy);
1279 int px = cx * 7 + _xBorder + _xFieldBorder[field] + _xFieldStart[field];
1280 int py = cy * 9 + _yBorder + _yFieldBorder[field] + _yFieldStart[field];
1285 // Fill in the gap between the 'D' and the arrow.
1286 _instrument->DrawPixel(px+5, py+3);
1289 // Takes character position
1290 void KLN89::DrawChar(char c, int field, int px, int py, bool bold, bool invert) {
1291 // Ignore field for now
1293 px = px * 7 + _xBorder + _xFieldBorder[field] + _xFieldStart[field];
1294 py = py * 9 + _yBorder + _yFieldBorder[field] + _yFieldStart[field];
1296 // Draw an orange background for inverted characters
1298 for(int i=0; i<7; ++i) {
1299 for(int j=0; j<9; ++j) {
1300 _instrument->DrawPixel(px + i, py + j);
1305 if(c < 33) return; // space
1307 // Render normal decimal points in bold floats
1308 if(c == '.') bold = false;
1310 ++py; // Shift the char up by one pixel
1311 for(int j=7; j>=0; --j) {
1312 char c1 = (bold ? NumbersBold[c-48][j] : UpperAlpha[c-33][j]);
1313 // Don't do the last column for now (ie. j = 1, not 0)
1314 for(int i=5; i>=0; --i) {
1315 if(c1 & (01 << i)) {
1316 _instrument->DrawPixel(px, py, invert);
1325 // Takes pixel position
1326 void KLN89::DrawFreeChar(char c, int x, int y, bool draw_background) {
1328 if(draw_background) {
1329 _instrument->DrawQuad(x, y, x+6, y+8, true);
1332 if(c < 33) return; // space
1334 ++y; // Shift the char up by one pixel
1335 for(int j=7; j>=0; --j) {
1336 char c1 = UpperAlpha[c-33][j];
1337 // Don't do the last column for now (ie. j = 1, not 0)
1338 for(int i=5; i>=0; --i) {
1339 if(c1 & (01 << i)) {
1340 _instrument->DrawPixel(x, y);
1349 // Takes instrument pixel co-ordinates.
1350 // Position is specified by the bottom of the *visible* portion, by default the left position unless align_right is true.
1351 // The return value is the pixel width of the visible portion
1352 int KLN89::DrawSmallChar(char c, int x, int y, bool align_right) {
1353 // calculate the index into the SmallChar array
1355 if(c > 47 && c < 58) {
1358 } else if(c > 64 && c < 91) {
1365 char n = SmallChar[idx][0]; // Width of visible portion
1366 if(align_right) x -= n;
1369 _instrument->DrawQuad(x - 1, y - 1, x + n, y + 5, true);
1371 for(int j=7; j>=3; --j) {
1372 char c1 = SmallChar[idx][j];
1373 for(int i=n-1; i>=0; --i) {
1374 if(c1 & (01 << i)) {
1375 _instrument->DrawPixel(x, y);
1386 // Takes character position
1387 void KLN89::DrawSpecialChar(char c, int field, int cx, int cy, bool bold) {
1389 cout << "ERROR - requested special char outside array bounds!\n";
1390 return; // Increment this as SpecialChar grows
1393 // Convert character to pixel position.
1394 // Ignore field for now
1396 int px = cx * 7 + _xBorder + _xFieldBorder[field] + _xFieldStart[field];
1397 int py = cy * 9 + _yBorder + _yFieldBorder[field] + _yFieldStart[field];
1398 ++py; // Total hack - the special chars were coming out 1 pixel too low!
1399 for(int i=7; i>=0; --i) {
1400 char c1 = SpecialChar[(int)c][i];
1401 // Don't do the last column for now (ie. j = 1, not 0)
1402 for(int j=5; j>=0; --j) {
1403 if(c1 & (01 << j)) {
1404 _instrument->DrawPixel(px, py);
1413 void KLN89::DrawText(const string& s, int field, int px, int py, bool bold, int invert) {
1414 for(int i = 0; i < (int)s.size(); ++i) {
1415 DrawChar(s[(unsigned int)i], field, px+i, py, bold, (invert == i || invert == 99));
1419 void KLN89::DrawMapText(const string& s, int x, int y, bool draw_background) {
1420 MapToInstrument(x, y);
1421 if(draw_background) {
1422 //_instrument->DrawQuad(x, y, x + (7 * s.size()) - 1, y + 8, true);
1423 _instrument->DrawQuad(x - 1, y, x + (7 * s.size()) - 2, y + 8, true);
1424 // The minus 1 and minus 2 are an ugly hack to disguise the fact that I've lost track of exactly what's going on!
1427 for(int i = 0; i < (int)s.size(); ++i) {
1428 DrawFreeChar(s[(unsigned int)i], x+(i * 7)-1, y);
1432 void KLN89::DrawLatitude(double d, int field, int px, int py) {
1433 DrawChar((d >= 0 ? 'N' : 'S'), field, px, py);
1436 // TODO - sanity check input to ensure major lat field can only ever by 2 chars wide
1438 // Don't know whether to zero pad the below for single digits or not?
1439 //cout << d << ", " << (int)d << '\n';
1440 // 3 not 2 in size before for trailing \0
1441 int n = snprintf(buf, 3, "%i", (int)d);
1443 //cout << s << "... " << n << '\n';
1444 DrawText(s, field, px+(3-n), py);
1445 n = snprintf(buf, 7, "%05.2f'", ((double)(d - (int)d)) * 60.0f);
1448 DrawSpecialChar(0, field, px, py); // Degrees symbol
1450 DrawText(s, field, px, py);
1453 void KLN89::DrawLongitude(double d, int field, int px, int py) {
1454 DrawChar((d >= 0 ? 'E' : 'W'), field, px, py);
1457 // TODO - sanity check input to ensure major lat field can only ever be 2 chars wide
1459 // Don't know whether to zero pad the below for single digits or not?
1460 //cout << d << ", " << (int)d << '\n';
1461 // 4 not 3 in size before for trailing \0
1462 int n = snprintf(buf, 4, "%i", (int)d);
1464 //cout << s << "... " << n << '\n';
1465 DrawText(s, field, px+(3-n), py);
1466 n = snprintf(buf, 7, "%05.2f'", ((double)(d - (int)d)) * 60.0f);
1469 DrawSpecialChar(0, field, px, py); // Degrees symbol
1471 DrawText(s, field, px, py);
1474 void KLN89::DrawFreq(double d, int field, int px, int py) {
1475 if(d >= 1000) d /= 100.0f;
1477 snprintf(buf, 7, "%6.2f", d);
1479 DrawText(s, field, px, py);
1482 void KLN89::DrawTime(double time, int field, int px, int py) {
1483 int hrs = (int)(time / 3600);
1484 int mins = (int)(ceil((time - (hrs * 3600)) / 60.0));
1489 n = snprintf(buf, 9, "%i:%02i", hrs, mins);
1492 n = snprintf(buf, 4, ":%02i", (int)time);
1495 DrawText(s, field, px - n + 1, py);
1498 void KLN89::DrawHeading(int h, int field, int px, int py) {
1500 snprintf(buf, 4, "%i", h);
1502 DrawText(s, field, px - s.size(), py);
1503 DrawSpecialChar(0, field, px, py); // Degrees symbol
1506 void KLN89::DrawDist(double d, int field, int px, int py) {
1507 d *= (_distUnits == GPS_DIST_UNITS_NM ? 1.0 : SG_NM_TO_METER * 0.001);
1509 snprintf(buf, 9, "%i", (int)(d + 0.5));
1511 s += (_distUnits == GPS_DIST_UNITS_NM ? "nm" : "Km");
1512 DrawText(s, field, px - s.size() + 1, py);
1515 void KLN89::DrawSpeed(double v, int field, int px, int py, int decimal) {
1516 // TODO - implement variable decimal places
1517 v *= (_velUnits == GPS_VEL_UNITS_KT ? 1.0 : 0.51444444444 * 0.001 * 3600.0);
1519 snprintf(buf, 9, "%i", (int)(v + 0.5));
1521 if(_velUnits == GPS_VEL_UNITS_KT) {
1523 DrawText(s, field, px - s.size() + 1, py);
1525 DrawText(s, field, px - s.size() - 1, py);
1526 DrawKPH(field, px - 1, py);
1530 void KLN89::DrawDirDistField(double lat, double lon, int field, int px, int py, bool to_flag, bool cursel) {
1531 DrawChar('>', field, px, py);
1535 h = GetMagHeadingFromTo(_gpsLat, _gpsLon, lat, lon);
1537 h = GetMagHeadingFromTo(lat, lon, _gpsLat, _gpsLon);
1539 while(h < 0.0) h += 360.0;
1540 while(h > 360.0) h -= 360.0;
1541 snprintf(buf, 4, "%3i", (int)(h + 0.5));
1543 if(!(cursel && _blink)) {
1544 DrawText(s, field, px + 4 - s.size(), py);
1545 DrawSpecialChar(0, field, px+4, py);
1546 DrawText((to_flag ? "To" : "Fr"), field, px+5, py);
1547 if(cursel) Underline(field, px + 1, py, 6);
1549 //double d = GetHorizontalSeparation(_gpsLat, _gpsLon, lat, lon);
1550 //d *= (_distUnits == GPS_DIST_UNITS_NM ? SG_METER_TO_NM : 0.001);
1551 double d = GetGreatCircleDistance(_gpsLat, _gpsLon, lat, lon);
1552 d *= (_distUnits == GPS_DIST_UNITS_NM ? 1.0 : SG_NM_TO_METER * 0.001);
1554 snprintf(buf, 7, "%5i", (int)(d + 0.5));
1556 snprintf(buf, 7, "%4.1f", d);
1559 DrawText(s, field, px + 12 - s.size(), py);
1560 DrawText((_distUnits == GPS_DIST_UNITS_NM ? "nm" : "Km"), field, px + 12, py);
1563 char KLN89::IncChar(char c, bool gap, bool wrap) {
1564 if(c == '9') return(wrap ? (gap ? ' ' : 'A') : '9');
1565 if(c == 'Z') return('0');
1566 if(c == ' ') return('A');
1570 char KLN89::DecChar(char c, bool gap, bool wrap) {
1571 if(c == 'A') return(wrap ? (gap ? ' ' : '9') : 'A');
1572 if(c == '0') return('Z');
1573 if(c == ' ') return('9');