//
// Written by Curtis Olson, started April 2000.
//
-// Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// $Id$
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h> // snprintf
+
+#include <simgear/compiler.h>
+#include <simgear/math/sg_random.h>
+
#include <Aircraft/aircraft.hxx>
-#include <Main/bfi.hxx>
-#include <Navaids/ilslist.hxx>
#include <Navaids/navlist.hxx>
-#include <Time/event.hxx>
#include "radiostack.hxx"
-/**
- * Boy, this is ugly! Make the VOR range vary by altitude difference.
- */
-static inline double
-kludgeRange (double stationElev, double aircraftElev, double nominalRange)
-{
- // Assume that the nominal range (usually
- // 50nm) applies at a 5,000 ft difference.
- // Just a wild guess!
- double factor = ((aircraftElev*METER_TO_FEET) - stationElev) / 1000.0;
- double range = fabs(nominalRange * factor);
-
- // Clamp the range to keep it sane; for
- // now, never less than 25% or more than
- // 500% of nominal range.
- if (range < nominalRange/4.0) {
- range = nominalRange/4.0;
- } else if (range > nominalRange*5.0) {
- range = nominalRange*5.0;
- }
-
- return range;
-}
+#include <string>
+SG_USING_STD(string);
FGRadioStack *current_radiostack;
-// periodic radio station search wrapper
-static void fgRadioSearch( void ) {
- current_radiostack->search();
-}
-
// Constructor
FGRadioStack::FGRadioStack() {
- nav1_radial = 0.0;
- nav1_dme_dist = 0.0;
- nav2_radial = 0.0;
- nav2_dme_dist = 0.0;
- need_update = true;
- longitudeVal = fgGetValue("/position/longitude");
- latitudeVal = fgGetValue("/position/latitude");
- altitudeVal = fgGetValue("/position/altitude");
}
// Destructor
FGRadioStack::~FGRadioStack()
{
- unbind(); // FIXME: should be called externally
+ //adf.unbind();
+ //beacon.unbind();
+ navcom1.unbind();
+ navcom2.unbind();
+ //xponder.unbind();
}
void
FGRadioStack::init ()
{
+ navcom1.set_bind_index( 0 );
+ navcom1.init();
+
+ navcom2.set_bind_index( 1 );
+ navcom2.init();
+
+ //adf.init();
+ //beacon.init();
+ //xponder.init();
+
search();
- update();
+ update(0); // FIXME: use dt
// Search radio database once per second
- global_events.Register( "fgRadioSearch()", fgRadioSearch,
- fgEVENT::FG_EVENT_READY, 1000);
+ globals->get_event_mgr()->addTask( "fgRadioSearch()", current_radiostack,
+ &FGRadioStack::search, 1 );
}
+
void
FGRadioStack::bind ()
{
- // User inputs
- fgTie("/radios/nav1/frequencies/selected", this,
- &FGRadioStack::get_nav1_freq, &FGRadioStack::set_nav1_freq);
- fgTie("/radios/nav1/frequencies/standby", this,
- &FGRadioStack::get_nav1_alt_freq, &FGRadioStack::set_nav1_alt_freq);
- fgTie("/radios/nav1/radials/selected", this,
- &FGRadioStack::get_nav1_sel_radial,
- &FGRadioStack::set_nav1_sel_radial);
-
- // Radio outputs
- fgTie("/radios/nav1/radials/actual", this, &FGRadioStack::get_nav1_radial);
- fgTie("/radios/nav1/to-flag", this, &FGRadioStack::get_nav1_to_flag);
- fgTie("/radios/nav1/from-flag", this, &FGRadioStack::get_nav1_from_flag);
- fgTie("/radios/nav1/in-range", this, &FGRadioStack::get_nav1_inrange);
- fgTie("/radios/nav1/dme/distance", this, &FGRadioStack::get_nav1_dme_dist);
- fgTie("/radios/nav1/dme/in-range", this,
- &FGRadioStack::get_nav1_dme_inrange);
- fgTie("/radios/nav1/heading-needle-deflection", this,
- &FGRadioStack::get_nav1_heading_needle_deflection);
- fgTie("/radios/nav1/gs-needle-deflection", this,
- &FGRadioStack::get_nav1_gs_needle_deflection);
-
- // User inputs
- fgTie("/radios/nav2/frequencies/selected", this,
- &FGRadioStack::get_nav2_freq, &FGRadioStack::set_nav2_freq);
- fgTie("/radios/nav2/frequencies/standby", this,
- &FGRadioStack::get_nav2_alt_freq, &FGRadioStack::set_nav2_alt_freq);
- fgTie("/radios/nav2/radials/selected", this,
- &FGRadioStack::get_nav2_sel_radial,
- &FGRadioStack::set_nav2_sel_radial);
-
- // Radio outputs
- fgTie("/radios/nav2/radials/actual", this, &FGRadioStack::get_nav2_radial);
- fgTie("/radios/nav2/to-flag", this, &FGRadioStack::get_nav2_to_flag);
- fgTie("/radios/nav2/from-flag", this, &FGRadioStack::get_nav2_from_flag);
- fgTie("/radios/nav2/in-range", this, &FGRadioStack::get_nav2_inrange);
- fgTie("/radios/nav2/dme/distance", this, &FGRadioStack::get_nav2_dme_dist);
- fgTie("/radios/nav2/dme/in-range", this,
- &FGRadioStack::get_nav2_dme_inrange);
- fgTie("/radios/nav2/heading-needle-deflection", this,
- &FGRadioStack::get_nav2_heading_needle_deflection);
- fgTie("/radios/nav2/gs-needle-deflection", this,
- &FGRadioStack::get_nav2_gs_needle_deflection);
-
- // User inputs
- fgTie("/radios/adf/frequencies/selected", this,
- &FGRadioStack::get_adf_freq, &FGRadioStack::set_adf_freq);
- fgTie("/radios/adf/frequencies/standby", this,
- &FGRadioStack::get_adf_alt_freq, &FGRadioStack::set_adf_alt_freq);
- fgTie("/radios/adf/rotation", this,
- &FGRadioStack::get_adf_rotation, &FGRadioStack::set_adf_rotation);
+ //adf.bind();
+ //beacon.bind();
+ //dme.bind();
+ navcom1.set_bind_index( 0 );
+ navcom1.bind();
+ navcom2.set_bind_index( 1 );
+ navcom2.bind();
+ //xponder.bind();
}
+
void
FGRadioStack::unbind ()
{
- fgUntie("/radios/nav1/frequencies/selected");
- fgUntie("/radios/nav1/frequencies/standby");
- fgUntie("/radios/nav1/radials/actual");
- fgUntie("/radios/nav1/radials/selected");
- fgUntie("/radios/nav1/to-flag");
- fgUntie("/radios/nav1/from-flag");
- fgUntie("/radios/nav1/in-range");
- fgUntie("/radios/nav1/dme/distance");
- fgUntie("/radios/nav1/dme/in-range");
- fgUntie("/radios/nav1/heading-needle-deflection");
- fgUntie("/radios/nav1/gs-needle-deflection");
-
- fgUntie("/radios/nav2/frequencies/selected");
- fgUntie("/radios/nav2/frequencies/standby");
- fgUntie("/radios/nav2/radials/actual");
- fgUntie("/radios/nav2/radials/selected");
- fgUntie("/radios/nav2/to-flag");
- fgUntie("/radios/nav2/from-flag");
- fgUntie("/radios/nav2/in-range");
- fgUntie("/radios/nav2/dme/distance");
- fgUntie("/radios/nav2/dme/in-range");
- fgUntie("/radios/nav2/heading-needle-deflection");
- fgUntie("/radios/nav2/gs-needle-deflection");
-
- fgUntie("/radios/adf/frequencies/selected");
- fgUntie("/radios/adf/frequencies/standby");
- fgUntie("/radios/adf/rotation");
+ //adf.unbind();
+ //beacon.unbind();
+ //dme.unbind();
+ navcom1.unbind();
+ navcom2.unbind();
+ //xponder.unbind();
}
-// Search the database for the current frequencies given current location
+
+// Update the various nav values based on position and valid tuned in navs
void
-FGRadioStack::update()
+FGRadioStack::update(double dt)
{
- double lon = longitudeVal->getDoubleValue() * DEG_TO_RAD;
- double lat = latitudeVal->getDoubleValue() * DEG_TO_RAD;
- double elev = altitudeVal->getDoubleValue() * FEET_TO_METER;
-
- need_update = false;
-
- Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
- Point3D station;
- double az1, az2, s;
-
- if ( nav1_valid ) {
- station = Point3D( nav1_x, nav1_y, nav1_z );
- nav1_loc_dist = aircraft.distance3D( station );
-
- if ( nav1_has_dme ) {
- // staightline distance
- station = Point3D( nav1_dme_x, nav1_dme_y, nav1_dme_z );
- nav1_dme_dist = aircraft.distance3D( station );
- } else {
- nav1_dme_dist = 0.0;
- }
-
- if ( nav1_has_gs ) {
- station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
- nav1_gs_dist = aircraft.distance3D( station );
- } else {
- nav1_gs_dist = 0.0;
- }
-
- if ( nav1_loc_dist < nav1_effective_range * NM_TO_METER ) {
- nav1_inrange = true;
-
- // wgs84 heading
- geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
- nav1_loclat, nav1_loclon,
- &az1, &az2, &s );
- // cout << "az1 = " << az1 << " magvar = " << nav1_magvar << endl;
- nav1_heading = az1 - nav1_magvar;
- // Alex: nav1_heading = - (az1 - FGBFI::getMagVar() / RAD_TO_DEG);
-
- // cout << " heading = " << nav1_heading
- // << " dist = " << nav1_dist << endl;
- } else {
- nav1_inrange = false;
- }
-
- if ( nav1_loc ) {
- } else {
- nav1_radial = nav1_sel_radial;
- }
- } else {
- nav1_inrange = false;
- nav1_dme_dist = 0.0;
- // cout << "not picking up vor. :-(" << endl;
- }
-
- if ( nav2_valid ) {
- station = Point3D( nav2_x, nav2_y, nav2_z );
- nav2_loc_dist = aircraft.distance3D( station );
-
- if ( nav2_has_dme ) {
- // staightline distance
- station = Point3D( nav2_dme_x, nav2_dme_y, nav2_dme_z );
- nav2_dme_dist = aircraft.distance3D( station );
- } else {
- nav2_dme_dist = 0.0;
- }
-
- if ( nav2_has_gs ) {
- station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
- nav2_gs_dist = aircraft.distance3D( station );
- } else {
- nav2_gs_dist = 0.0;
- }
-
- if ( nav2_loc_dist < nav2_effective_range * NM_TO_METER ) {
- nav2_inrange = true;
-
- // wgs84 heading
- geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
- nav2_loclat, nav2_loclon,
- &az1, &az2, &s );
- nav2_heading = az1 - nav2_magvar;
- // Alex: nav2_heading = - (az1 - FGBFI::getMagVar() / RAD_TO_DEG);
-
- // cout << " heading = " << nav2_heading
- // << " dist = " << nav2_dist << endl;
- } else {
- nav2_inrange = false;
- }
-
- if ( !nav2_loc ) {
- nav2_radial = nav2_sel_radial;
- }
- } else {
- nav2_inrange = false;
- // cout << "not picking up vor. :-(" << endl;
- }
-
- // adf
- if ( adf_valid ) {
- // staightline distance
- station = Point3D( adf_x, adf_y, adf_z );
- adf_dist = aircraft.distance3D( station );
-
- if ( adf_dist < adf_effective_range * NM_TO_METER ) {
- adf_inrange = true;
-
- // wgs84 heading
- geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
- adf_lat, adf_lon,
- &az1, &az2, &s );
- adf_heading = az1;
-
- // cout << " heading = " << nav2_heading
- // << " dist = " << nav2_dist << endl;
- } else {
- adf_inrange = false;
- }
- } else {
- adf_inrange = false;
- }
+ //adf.update( dt );
+ //beacon.update( dt );
+ navcom1.update( dt );
+ navcom2.update( dt );
+ //dme.update( dt ); // dme is updated after the navcom's
+ //xponder.update( dt );
}
// Update current nav/adf radio stations based on current postition
-void FGRadioStack::search ()
+void FGRadioStack::search()
{
- double lon = longitudeVal->getDoubleValue() * DEG_TO_RAD;
- double lat = latitudeVal->getDoubleValue() * DEG_TO_RAD;
- double elev = altitudeVal->getDoubleValue() * FEET_TO_METER;
-
- // nav1
- FGILS ils;
- FGNav nav;
-
- if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
- nav1_valid = true;
- nav1_loc = true;
- nav1_has_dme = ils.get_has_dme();
- nav1_has_gs = ils.get_has_gs();
-
- nav1_loclon = ils.get_loclon();
- nav1_loclat = ils.get_loclat();
- nav1_gslon = ils.get_gslon();
- nav1_gslat = ils.get_gslat();
- nav1_dmelon = ils.get_dmelon();
- nav1_dmelat = ils.get_dmelat();
- nav1_elev = ils.get_gselev();
- nav1_magvar = 0;
- nav1_effective_range = FG_ILS_DEFAULT_RANGE;
- nav1_target_gs = ils.get_gsangle();
- nav1_radial = ils.get_locheading();
- while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
- while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
- nav1_x = ils.get_x();
- nav1_y = ils.get_y();
- nav1_z = ils.get_z();
- nav1_gs_x = ils.get_gs_x();
- nav1_gs_y = ils.get_gs_y();
- nav1_gs_z = ils.get_gs_z();
- nav1_dme_x = ils.get_dme_x();
- nav1_dme_y = ils.get_dme_y();
- nav1_dme_z = ils.get_dme_z();
- // cout << "Found an ils station in range" << endl;
- // cout << " id = " << ils.get_locident() << endl;
- } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
- nav1_valid = true;
- nav1_loc = false;
- nav1_has_dme = nav.get_has_dme();
- nav1_has_gs = false;
- nav1_loclon = nav.get_lon();
- nav1_loclat = nav.get_lat();
- nav1_elev = nav.get_elev();
- nav1_magvar = nav.get_magvar();
- nav1_effective_range = kludgeRange(nav1_elev, elev, nav.get_range());
- nav1_target_gs = 0.0;
- nav1_radial = nav1_sel_radial;
- nav1_x = nav1_dme_x = nav.get_x();
- nav1_y = nav1_dme_y = nav.get_y();
- nav1_z = nav1_dme_z = nav.get_z();
- // cout << "Found a vor station in range" << endl;
- // cout << " id = " << nav.get_ident() << endl;
- } else {
- nav1_valid = false;
- nav1_radial = 0;
- nav1_dme_dist = 0;
- // cout << "not picking up vor1. :-(" << endl;
- }
-
- if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
- nav2_valid = true;
- nav2_loc = true;
- nav2_has_dme = ils.get_has_dme();
- nav2_has_gs = ils.get_has_gs();
-
- nav2_loclon = ils.get_loclon();
- nav2_loclat = ils.get_loclat();
- nav2_elev = ils.get_gselev();
- nav2_magvar = 0;
- nav2_effective_range = FG_ILS_DEFAULT_RANGE;
- nav2_target_gs = ils.get_gsangle();
- nav2_radial = ils.get_locheading();
- while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
- while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
- nav2_x = ils.get_x();
- nav2_y = ils.get_y();
- nav2_z = ils.get_z();
- nav2_gs_x = ils.get_gs_x();
- nav2_gs_y = ils.get_gs_y();
- nav2_gs_z = ils.get_gs_z();
- nav2_dme_x = ils.get_dme_x();
- nav2_dme_y = ils.get_dme_y();
- nav2_dme_z = ils.get_dme_z();
- // cout << "Found an ils station in range" << endl;
- // cout << " id = " << ils.get_locident() << endl;
- } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
- nav2_valid = true;
- nav2_loc = false;
- nav2_has_dme = nav.get_has_dme();
- nav2_has_dme = false;
- nav2_loclon = nav.get_lon();
- nav2_loclat = nav.get_lat();
- nav2_elev = nav.get_elev();
- nav2_magvar = nav.get_magvar();
- nav2_effective_range = kludgeRange(nav2_elev, elev, nav.get_range());
- nav2_target_gs = 0.0;
- nav2_radial = nav2_sel_radial;
- nav2_x = nav2_dme_x = nav.get_x();
- nav2_y = nav2_dme_y = nav.get_y();
- nav2_z = nav2_dme_z = nav.get_z();
- // cout << "Found a vor station in range" << endl;
- // cout << " id = " << nav.get_ident() << endl;
- } else {
- nav2_valid = false;
- nav2_radial = 0;
- nav2_dme_dist = 0;
- // cout << "not picking up vor2. :-(" << endl;
- }
-
- // adf
- if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
- adf_valid = true;
-
- adf_lon = nav.get_lon();
- adf_lat = nav.get_lat();
- adf_elev = nav.get_elev();
- adf_effective_range = kludgeRange(adf_elev, elev, nav.get_range());
- adf_x = nav.get_x();
- adf_y = nav.get_y();
- adf_z = nav.get_z();
- // cout << "Found an adf station in range" << endl;
- // cout << " id = " << nav.get_ident() << endl;
- } else {
- adf_valid = false;
- // cout << "not picking up adf. :-(" << endl;
- }
-}
-
-
-// return the amount of heading needle deflection, returns a value
-// clamped to the range of ( -10 , 10 )
-double FGRadioStack::get_nav1_heading_needle_deflection() const {
- double r;
-
- if ( nav1_inrange ) {
- r = nav1_heading - nav1_radial;
- // cout << "Radial = " << nav1_radial
- // << " Bearing = " << nav1_heading << endl;
-
- while (r> 180.0) r-=360.0;
- while (r<-180.0) r+=360.0;
- if ( fabs(r) > 90.0 )
- r = ( r<0.0 ? -r-180.0 : -r+180.0 );
- // According to Robin Peel, the ILS is 4x more sensitive than a vor
- if ( nav1_loc ) r *= 4.0;
- if ( r < -10.0 ) r = -10.0;
- if ( r > 10.0 ) r = 10.0;
- } else {
- r = 0.0;
- }
-
- return r;
-}
-
-// return the amount of heading needle deflection, returns a value
-// clamped to the range of ( -10 , 10 )
-double FGRadioStack::get_nav2_heading_needle_deflection() const {
- double r;
-
- if ( nav2_inrange ) {
- r = nav2_heading - nav2_radial;
- // cout << "Radial = " << nav2_radial
- // << " Bearing = " << nav2_heading << endl;
-
- while (r> 180.0) r-=360.0;
- while (r<-180.0) r+=360.0;
- if ( fabs(r) > 90.0 )
- r = ( r<0.0 ? -r-180.0 : -r+180.0 );
- // According to Robin Peel, the ILS is 4x more sensitive than a vor
- if ( nav2_loc ) r *= 4.0;
- if ( r < -10.0 ) r = -10.0;
- if ( r > 10.0 ) r = 10.0;
- } else {
- r = 0.0;
- }
-
- return r;
-}
-
-// return the amount of glide slope needle deflection (.i.e. the
-// number of degrees we are off the glide slope * 5.0
-double FGRadioStack::get_nav1_gs_needle_deflection() const {
- if ( nav1_inrange && nav1_has_gs ) {
- double x = nav1_gs_dist;
- double y = (FGBFI::getAltitude() - nav1_elev) * FEET_TO_METER;
- double angle = atan2( y, x ) * RAD_TO_DEG;
- return (nav1_target_gs - angle) * 5.0;
- } else {
- return 0.0;
- }
-}
-
-
-// return the amount of glide slope needle deflection (.i.e. the
-// number of degrees we are off the glide slope * 5.0
-double FGRadioStack::get_nav2_gs_needle_deflection() const {
- if ( nav2_inrange && nav2_has_gs ) {
- double x = nav2_gs_dist;
- double y = (FGBFI::getAltitude() - nav2_elev) * FEET_TO_METER;
- double angle = atan2( y, x ) * RAD_TO_DEG;
- return (nav2_target_gs - angle) * 5.0;
- } else {
- return 0.0;
- }
-}
-
-
-/**
- * Return true if the NAV1 TO flag should be active.
- */
-bool
-FGRadioStack::get_nav1_to_flag () const
-{
- if (nav1_inrange) {
- double offset = fabs(nav1_heading - nav1_radial);
- if (nav1_loc)
- return true;
- else
- return (offset <= 90.0 || offset >= 270.0);
- } else {
- return false;
- }
-}
-
-
-/**
- * Return true if the NAV1 FROM flag should be active.
- */
-bool
-FGRadioStack::get_nav1_from_flag () const
-{
- if (nav1_inrange) {
- double offset = fabs(nav1_heading - nav1_radial);
- if (nav1_loc)
- return false;
- else
- return (offset > 90.0 && offset < 270.0);
- } else {
- return false;
- }
+ //adf.search();
+ //beacon.search();
+ navcom1.search();
+ navcom2.search();
+ //dme.search();
+ //xponder.search();
}
-
-
-/**
- * Return true if the NAV2 TO flag should be active.
- */
-bool
-FGRadioStack::get_nav2_to_flag () const
-{
- if (nav2_inrange) {
- double offset = fabs(nav2_heading - nav2_radial);
- if (nav2_loc)
- return true;
- else
- return (offset <= 90.0 || offset >= 270.0);
- } else {
- return false;
- }
-}
-
-
-/**
- * Return true if the NAV2 FROM flag should be active.
- */
-bool
-FGRadioStack::get_nav2_from_flag () const
-{
- if (nav2_inrange) {
- double offset = fabs(nav2_heading - nav2_radial);
- if (nav2_loc)
- return false;
- else
- return (offset > 90.0 && offset < 270.0);
- } else {
- return false;
- }
-}
-
projects / flightgear.git / blobdiff