+++ /dev/null
-// dme.cxx -- class to manage an instance of the DME
-//
-// Written by Curtis Olson, started April 2000.
-//
-// 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
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#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 <Navaids/navlist.hxx>
-
-#include "dme.hxx"
-
-#include <string>
-SG_USING_STD(string);
-
-
-/**
- * Boy, this is ugly! Make the VOR range vary by altitude difference.
- */
-static 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 - stationElev)*SG_METER_TO_FEET / 5000.0;
- 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;
-}
-
-
-// Constructor
-FGDME::FGDME() :
- lon_node(fgGetNode("/position/longitude-deg", true)),
- lat_node(fgGetNode("/position/latitude-deg", true)),
- alt_node(fgGetNode("/position/altitude-ft", true)),
- bus_power(fgGetNode("/systems/electrical/outputs/dme", true)),
- navcom1_bus_power(fgGetNode("/systems/electrical/outputs/navcom[0]", true)),
- navcom2_bus_power(fgGetNode("/systems/electrical/outputs/navcom[1]", true)),
- navcom1_power_btn(fgGetNode("/radios/comm[0]/inputs/power-btn", true)),
- navcom2_power_btn(fgGetNode("/radios/comm[1]/inputs/power-btn", true)),
- navcom1_freq(fgGetNode("/radios/nav[0]/frequencies/selected-mhz", true)),
- navcom2_freq(fgGetNode("/radios/nav[1]/frequencies/selected-mhz", true)),
- need_update(true),
- freq(0.0),
- bias(0.0),
- dist(0.0),
- prev_dist(0.0),
- spd(0.0),
- ete(0.0)
-{
- last_time.stamp();
-}
-
-
-// Destructor
-FGDME::~FGDME()
-{
-}
-
-
-void
-FGDME::init ()
-{
-}
-
-void
-FGDME::bind ()
-{
-
- // User inputs
- fgTie("/radios/dme/frequencies/selected-khz", this,
- &FGDME::get_freq, &FGDME::set_freq);
-
- // Radio outputs
- fgTie("/radios/dme/in-range", this, &FGDME::get_inrange);
-
- fgTie("/radios/dme/distance-nm", this, &FGDME::get_dist);
-
- fgTie("/radios/dme/speed-kt", this, &FGDME::get_spd);
-
- fgTie("/radios/dme/ete-min", this, &FGDME::get_ete);
-}
-
-void
-FGDME::unbind ()
-{
- fgUntie("/radios/dme/frequencies/selected-khz");
-
- // Radio outputs
- fgUntie("/radios/dme/in-range");
- fgUntie("/radios/dme/distance-nm");
- fgUntie("/radios/dme/speed-kt");
- fgUntie("/radios/dme/ete-min");
-}
-
-
-// Update the various nav values based on position and valid tuned in navs
-void
-FGDME::update(double dt)
-{
- double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
- double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
- double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
-
- need_update = false;
-
- Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
- Point3D station;
-
- if ( valid && has_power() ) {
- station = Point3D( x, y, z );
- dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
- effective_range = kludgeRange(elev, elev, range);
- if (dist < effective_range * SG_NM_TO_METER) {
- inrange = true;
- } else if (dist < 2 * effective_range * SG_NM_TO_METER) {
- inrange = sg_random() <
- (2 * effective_range * SG_NM_TO_METER - dist) /
- (effective_range * SG_NM_TO_METER);
- } else {
- inrange = false;
- }
- if ( inrange ) {
- SGTimeStamp current_time;
- station = Point3D( x, y, z );
- dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
- dist -= bias;
- if ( dist < 0.0 ) {
- dist = 0.0;
- }
-
- current_time.stamp();
- long dMs = (current_time - last_time) / 1000;
- // Update every second
- if (dMs >= 1000) {
- double dDist = dist - prev_dist;
- spd = fabs((dDist/dMs) * 3600000);
- // FIXME: the panel should be able to
- // handle this!!!
- if (spd > 999.0)
- spd = 999.0;
- ete = fabs((dist/spd) * 60.0);
- // FIXME: the panel should be able to
- // handle this!!!
- if (ete > 99.0)
- ete = 99.0;
- prev_dist = dist;
- last_time.stamp();
- }
- }
- } else {
- inrange = false;
- dist = 0.0;
- prev_dist = 0.0;
- spd = 0.0;
- ete = 0.0;
- }
-}
-
-
-// Update current nav/adf radio stations based on current postition
-void FGDME::search()
-{
- double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
- double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
- double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
-
- // FIXME: the panel should handle this
- // don't worry about overhead for now,
- // since this is handled only periodically
- switch_pos = fgGetInt("/radios/dme/switch-position", 2);
- if ( switch_pos == 1 && has_power() && navcom1_on() ) {
- if ( freq != navcom1_freq->getDoubleValue() ) {
- freq = navcom1_freq->getDoubleValue();
- need_update = true;
- }
- } else if ( switch_pos == 3 && has_power() && navcom2_on() ) {
- if ( freq != navcom2_freq->getDoubleValue() ) {
- freq = navcom2_freq->getDoubleValue();
- need_update = true;
- }
- } else if ( switch_pos == 2 && has_power() ) {
- // no-op
- } else {
- freq = 0;
- inrange = false;
- }
-
- FGNavRecord *dme
- = globals->get_dmelist()->findByFreq( freq, lon, lat, elev );
-
- if ( dme != NULL ) {
- valid = true;
- lon = dme->get_lon();
- lat = dme->get_lat();
- elev = dme->get_elev_ft();
- bias = dme->get_multiuse();
- range = FG_LOC_DEFAULT_RANGE;
- effective_range = kludgeRange(elev, elev, range);
- x = dme->get_x();
- y = dme->get_y();
- z = dme->get_z();
- } else {
- valid = false;
- dist = 0;
- }
-}
+++ /dev/null
-// navcom.cxx -- class to manage a navcom instance
-//
-// Written by Curtis Olson, started April 2000.
-//
-// Copyright (C) 2000 - 2002 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
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <stdio.h> // snprintf
-
-#include <simgear/compiler.h>
-#include <simgear/sg_inlines.h>
-#include <simgear/math/sg_random.h>
-#include <simgear/math/vector.hxx>
-
-#include <Aircraft/aircraft.hxx>
-#include <Navaids/navlist.hxx>
-
-#include "navcom.hxx"
-
-#include <string>
-SG_USING_STD(string);
-
-
-// Constructor
-FGNavCom::FGNavCom() :
- lon_node(fgGetNode("/position/longitude-deg", true)),
- lat_node(fgGetNode("/position/latitude-deg", true)),
- alt_node(fgGetNode("/position/altitude-ft", true)),
- last_nav_id(""),
- last_nav_vor(false),
- nav_play_count(0),
- nav_last_time(0),
- need_update(true),
- power_btn(true),
- audio_btn(true),
- comm_freq(0.0),
- comm_alt_freq(0.0),
- comm_vol_btn(0.0),
- nav_freq(0.0),
- nav_alt_freq(0.0),
- nav_heading(0.0),
- nav_radial(0.0),
- nav_target_radial(0.0),
- nav_target_radial_true(0.0),
- nav_target_auto_hdg(0.0),
- nav_gs_rate_of_climb(0.0),
- nav_vol_btn(0.0),
- nav_ident_btn(true),
- horiz_vel(0.0),
- last_x(0.0)
-{
- SGPath path( globals->get_fg_root() );
- SGPath term = path;
- term.append( "Navaids/range.term" );
- SGPath low = path;
- low.append( "Navaids/range.low" );
- SGPath high = path;
- high.append( "Navaids/range.high" );
-
- term_tbl = new SGInterpTable( term.str() );
- low_tbl = new SGInterpTable( low.str() );
- high_tbl = new SGInterpTable( high.str() );
-
-}
-
-
-// Destructor
-FGNavCom::~FGNavCom()
-{
- delete term_tbl;
- delete low_tbl;
- delete high_tbl;
-}
-
-
-void
-FGNavCom::init ()
-{
- morse.init();
-
- // We assume that index is valid now (it must be set before init()
- // is called.)
- char propname[256];
- // FIXME: Get rid of snprintf
-
- snprintf(propname, 256, "/systems/electrical/outputs/navcom[%d]", index);
- // default to true in case no electrical system defined.
- fgSetDouble( propname, 60.0 );
- bus_power = fgGetNode( propname, true );
-
- snprintf(propname, 256, "/instrumentation/comm[%d]/serviceable", index);
- com_serviceable = fgGetNode( propname, true );
- com_serviceable->setBoolValue( true );
-
- snprintf(propname, 256, "/instrumentation/nav[%d]/serviceable", index);
- nav_serviceable = fgGetNode( propname, true );
- nav_serviceable->setBoolValue( true );
-
- snprintf(propname, 256, "/instrumentation/vor[%d]/cdi/serviceable", index);
- cdi_serviceable = fgGetNode( propname, true );
- cdi_serviceable->setBoolValue( true );
-
- snprintf(propname, 256, "/instrumentation/vor[%d]/gs/serviceable", index);
- gs_serviceable = fgGetNode( propname, true );
- gs_serviceable->setBoolValue( true );
-
- snprintf(propname, 256, "/instrumentation/vor[%d]/to-from/serviceable", index);
- tofrom_serviceable = fgGetNode( propname, true );
- tofrom_serviceable->setBoolValue( true );
-}
-
-void
-FGNavCom::bind ()
-{
- char propname[256];
- // FIXME: Get rid of snprintf
-
- // User inputs
- snprintf(propname, 256, "/radios/comm[%d]/inputs/power-btn", index);
- fgTie( propname, this,
- &FGNavCom::get_power_btn, &FGNavCom::set_power_btn );
- fgSetArchivable( propname );
-
- snprintf(propname, 256, "/radios/comm[%d]/frequencies/selected-mhz", index);
- fgTie( propname, this, &FGNavCom::get_comm_freq, &FGNavCom::set_comm_freq );
- fgSetArchivable( propname );
-
- snprintf(propname, 256, "/radios/comm[%d]/frequencies/standby-mhz", index);
- fgTie( propname, this,
- &FGNavCom::get_comm_alt_freq, &FGNavCom::set_comm_alt_freq );
- fgSetArchivable( propname );
-
- snprintf(propname, 256, "/radios/comm[%d]/volume", index);
- fgTie( propname, this,
- &FGNavCom::get_comm_vol_btn, &FGNavCom::set_comm_vol_btn );
- fgSetArchivable( propname );
-
- snprintf(propname, 256, "/radios/nav[%d]/frequencies/selected-mhz", index);
- fgTie( propname, this,
- &FGNavCom::get_nav_freq, &FGNavCom::set_nav_freq );
- fgSetArchivable( propname );
-
- snprintf(propname, 256, "/radios/nav[%d]/frequencies/standby-mhz", index);
- fgTie( propname , this,
- &FGNavCom::get_nav_alt_freq, &FGNavCom::set_nav_alt_freq);
- fgSetArchivable( propname );
-
- snprintf(propname, 256, "/radios/nav[%d]/radials/selected-deg", index);
- fgTie( propname, this,
- &FGNavCom::get_nav_sel_radial, &FGNavCom::set_nav_sel_radial );
- fgSetArchivable( propname );
-
- snprintf(propname, 256, "/radios/nav[%d]/volume", index);
- fgTie( propname, this,
- &FGNavCom::get_nav_vol_btn, &FGNavCom::set_nav_vol_btn );
- fgSetArchivable( propname );
-
- snprintf(propname, 256, "/radios/nav[%d]/ident", index);
- fgTie( propname, this,
- &FGNavCom::get_nav_ident_btn, &FGNavCom::set_nav_ident_btn );
- fgSetArchivable( propname );
-
- // Radio outputs
- snprintf(propname, 256, "/radios/nav[%d]/audio-btn", index);
- fgTie( propname, this,
- &FGNavCom::get_audio_btn, &FGNavCom::set_audio_btn );
- fgSetArchivable( propname );
-
- snprintf(propname, 256, "/radios/nav[%d]/heading-deg", index);
- fgTie( propname, this, &FGNavCom::get_nav_heading );
-
- snprintf(propname, 256, "/radios/nav[%d]/radials/actual-deg", index);
- fgTie( propname, this, &FGNavCom::get_nav_radial );
-
- snprintf(propname, 256, "/radios/nav[%d]/radials/target-radial-deg", index);
- fgTie( propname, this, &FGNavCom::get_nav_target_radial_true );
-
- snprintf(propname, 256, "/radios/nav[%d]/radials/target-auto-hdg-deg",
- index);
- fgTie( propname, this, &FGNavCom::get_nav_target_auto_hdg );
-
- snprintf(propname, 256, "/radios/nav[%d]/to-flag", index);
- fgTie( propname, this, &FGNavCom::get_nav_to_flag );
-
- snprintf(propname, 256, "/radios/nav[%d]/from-flag", index);
- fgTie( propname, this, &FGNavCom::get_nav_from_flag );
-
- snprintf(propname, 256, "/radios/nav[%d]/in-range", index);
- fgTie( propname, this, &FGNavCom::get_nav_inrange );
-
- snprintf(propname, 256, "/radios/nav[%d]/heading-needle-deflection", index);
- fgTie( propname, this, &FGNavCom::get_nav_cdi_deflection );
-
- snprintf(propname, 256, "/radios/nav[%d]/crosstrack-error-m", index);
- fgTie( propname, this, &FGNavCom::get_nav_cdi_xtrack_error );
-
- snprintf(propname, 256, "/radios/nav[%d]/has-gs", index);
- fgTie( propname, this, &FGNavCom::get_nav_has_gs );
-
- snprintf(propname, 256, "/radios/nav[%d]/nav-loc", index);
- fgTie( propname, this, &FGNavCom::get_nav_loc );
-
- snprintf(propname, 256, "/radios/nav[%d]/gs-rate-of-climb", index);
- fgTie( propname, this, &FGNavCom::get_nav_gs_rate_of_climb );
-
- snprintf(propname, 256, "/radios/nav[%d]/gs-needle-deflection", index);
- fgTie( propname, this, &FGNavCom::get_nav_gs_deflection );
-
- snprintf(propname, 256, "/radios/nav[%d]/nav-id", index);
- fgTie( propname, this, &FGNavCom::get_nav_id );
-
- // put nav_id characters into seperate properties for instrument displays
- snprintf(propname, 256, "/radios/nav[%d]/nav-id_asc1", index);
- fgTie( propname, this, &FGNavCom::get_nav_id_c1 );
-
- snprintf(propname, 256, "/radios/nav[%d]/nav-id_asc2", index);
- fgTie( propname, this, &FGNavCom::get_nav_id_c2 );
-
- snprintf(propname, 256, "/radios/nav[%d]/nav-id_asc3", index);
- fgTie( propname, this, &FGNavCom::get_nav_id_c3 );
-
- snprintf(propname, 256, "/radios/nav[%d]/nav-id_asc4", index);
- fgTie( propname, this, &FGNavCom::get_nav_id_c4 );
-
- // end of binding
-}
-
-
-void
-FGNavCom::unbind ()
-{
- char propname[256];
- // FIXME: Get rid of snprintf
-
- snprintf(propname, 256, "/radios/comm[%d]/inputs/power-btn", index);
- fgUntie( propname );
- snprintf(propname, 256, "/radios/comm[%d]/frequencies/selected-mhz", index);
- fgUntie( propname );
- snprintf(propname, 256, "/radios/comm[%d]/frequencies/standby-mhz", index);
- fgUntie( propname );
-
- snprintf(propname, 256, "/radios/nav[%d]/frequencies/selected-mhz", index);
- fgUntie( propname );
- snprintf(propname, 256, "/radios/nav[%d]/frequencies/standby-mhz", index);
- fgUntie( propname );
- snprintf(propname, 256, "/radios/nav[%d]/radials/actual-deg", index);
- fgUntie( propname );
- snprintf(propname, 256, "/radios/nav[%d]/radials/selected-deg", index);
- fgUntie( propname );
- snprintf(propname, 256, "/radios/nav[%d]/ident", index);
- fgUntie( propname );
- snprintf(propname, 256, "/radios/nav[%d]/to-flag", index);
- fgUntie( propname );
- snprintf(propname, 256, "/radios/nav[%d]/from-flag", index);
- fgUntie( propname );
- snprintf(propname, 256, "/radios/nav[%d]/in-range", index);
- fgUntie( propname );
- snprintf(propname, 256, "/radios/nav[%d]/heading-needle-deflection", index);
- fgUntie( propname );
- snprintf(propname, 256, "/radios/nav[%d]/gs-needle-deflection", index);
- fgUntie( propname );
-}
-
-
-// model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
-double FGNavCom::adjustNavRange( double stationElev, double aircraftElev,
- double nominalRange )
-{
- // extend out actual usable range to be 1.3x the published safe range
- const double usability_factor = 1.3;
-
- // assumptions we model the standard service volume, plus
- // ... rather than specifying a cylinder, we model a cone that
- // contains the cylinder. Then we put an upside down cone on top
- // to model diminishing returns at too-high altitudes.
-
- // altitude difference
- double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
- // cout << "aircraft elev = " << aircraftElev * SG_METER_TO_FEET
- // << " station elev = " << stationElev << endl;
-
- if ( nominalRange < 25.0 + SG_EPSILON ) {
- // Standard Terminal Service Volume
- return term_tbl->interpolate( alt ) * usability_factor;
- } else if ( nominalRange < 50.0 + SG_EPSILON ) {
- // Standard Low Altitude Service Volume
- // table is based on range of 40, scale to actual range
- return low_tbl->interpolate( alt ) * nominalRange / 40.0
- * usability_factor;
- } else {
- // Standard High Altitude Service Volume
- // table is based on range of 130, scale to actual range
- return high_tbl->interpolate( alt ) * nominalRange / 130.0
- * usability_factor;
- }
-}
-
-
-// model standard ILS service volumes as per AIM 1-1-9
-double FGNavCom::adjustILSRange( double stationElev, double aircraftElev,
- double offsetDegrees, double distance )
-{
- // assumptions we model the standard service volume, plus
-
- // altitude difference
- // double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
-// double offset = fabs( offsetDegrees );
-
-// if ( offset < 10 ) {
-// return FG_ILS_DEFAULT_RANGE;
-// } else if ( offset < 35 ) {
-// return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
-// } else if ( offset < 45 ) {
-// return (45 - offset);
-// } else if ( offset > 170 ) {
-// return FG_ILS_DEFAULT_RANGE;
-// } else if ( offset > 145 ) {
-// return 10 + (offset - 145) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
-// } else if ( offset > 135 ) {
-// return (offset - 135);
-// } else {
-// return 0;
-// }
- return FG_LOC_DEFAULT_RANGE;
-}
-
-
-// Update the various nav values based on position and valid tuned in navs
-void
-FGNavCom::update(double dt)
-{
- double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
- double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
- double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
-
- need_update = false;
-
- Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
- Point3D station;
- double az1, az2, s;
-
- ////////////////////////////////////////////////////////////////////////
- // Nav.
- ////////////////////////////////////////////////////////////////////////
-
- if ( nav_valid && power_btn && (bus_power->getDoubleValue() > 1.0)
- && nav_serviceable->getBoolValue() )
- {
- station = Point3D( nav_x, nav_y, nav_z );
- nav_loc_dist = aircraft.distance3D( station );
-
- if ( nav_has_gs ) {
- // find closest distance to the gs base line
- sgdVec3 p;
- sgdSetVec3( p, aircraft.x(), aircraft.y(), aircraft.z() );
- sgdVec3 p0;
- sgdSetVec3( p0, nav_gs_x, nav_gs_y, nav_gs_z );
- double dist = sgdClosestPointToLineDistSquared( p, p0,
- gs_base_vec );
- nav_gs_dist = sqrt( dist );
- // cout << "nav_gs_dist = " << nav_gs_dist << endl;
-
- Point3D tmp( nav_gs_x, nav_gs_y, nav_gs_z );
- // cout << " (" << aircraft.distance3D( tmp ) << ")" << endl;
-
- // wgs84 heading to glide slope (to determine sign of distance)
- geo_inverse_wgs_84( elev,
- lat * SGD_RADIANS_TO_DEGREES,
- lon * SGD_RADIANS_TO_DEGREES,
- nav_gslat, nav_gslon,
- &az1, &az2, &s );
- double r = az1 - nav_target_radial;
- while ( r > 180.0 ) { r -= 360.0;}
- while ( r < -180.0 ) { r += 360.0;}
- if ( r >= -90.0 && r <= 90.0 ) {
- nav_gs_dist_signed = nav_gs_dist;
- } else {
- nav_gs_dist_signed = -nav_gs_dist;
- }
- /* cout << "Target Radial = " << nav_target_radial
- << " Bearing = " << az1
- << " dist (signed) = " << nav_gs_dist_signed
- << endl; */
-
- } else {
- nav_gs_dist = 0.0;
- }
-
- // wgs84 heading to localizer
- geo_inverse_wgs_84( elev,
- lat * SGD_RADIANS_TO_DEGREES,
- lon * SGD_RADIANS_TO_DEGREES,
- nav_loclat, nav_loclon,
- &nav_heading, &az2, &s );
- // cout << "az1 = " << az1 << " magvar = " << nav_magvar << endl;
- nav_radial = az2 - nav_twist;
- // cout << " heading = " << nav_heading
- // << " dist = " << nav_dist << endl;
-
- if ( nav_loc ) {
- double offset = nav_radial - nav_target_radial;
- while ( offset < -180.0 ) { offset += 360.0; }
- while ( offset > 180.0 ) { offset -= 360.0; }
- // cout << "ils offset = " << offset << endl;
- nav_effective_range
- = adjustILSRange( nav_elev, elev, offset,
- nav_loc_dist * SG_METER_TO_NM );
- } else {
- nav_effective_range = adjustNavRange( nav_elev, elev, nav_range );
- }
- // cout << "nav range = " << nav_effective_range
- // << " (" << nav_range << ")" << endl;
-
- if ( nav_loc_dist < nav_effective_range * SG_NM_TO_METER ) {
- nav_inrange = true;
- } else if ( nav_loc_dist < 2 * nav_effective_range * SG_NM_TO_METER ) {
- nav_inrange = sg_random() <
- ( 2 * nav_effective_range * SG_NM_TO_METER - nav_loc_dist ) /
- (nav_effective_range * SG_NM_TO_METER);
- } else {
- nav_inrange = false;
- }
-
- if ( !nav_loc ) {
- nav_target_radial = nav_sel_radial;
- }
-
- // Calculate some values for the nav/ils hold autopilot
-
- double cur_radial = get_nav_reciprocal_radial();
- if ( nav_loc ) {
- // ILS localizers radials are already "true" in our
- // database
- } else {
- cur_radial += nav_twist;
- }
- if ( get_nav_from_flag() ) {
- cur_radial += 180.0;
- while ( cur_radial >= 360.0 ) { cur_radial -= 360.0; }
- }
-
- // AUTOPILOT HELPERS
-
- // determine the target radial in "true" heading
- nav_target_radial_true = nav_target_radial;
- if ( nav_loc ) {
- // ILS localizers radials are already "true" in our
- // database
- } else {
- // VOR radials need to have that vor's offset added in
- nav_target_radial_true += nav_twist;
- }
-
- while ( nav_target_radial_true < 0.0 ) {
- nav_target_radial_true += 360.0;
- }
- while ( nav_target_radial_true > 360.0 ) {
- nav_target_radial_true -= 360.0;
- }
-
- // determine the heading adjustment needed.
- // over 8km scale by 3.0
- // (3 is chosen because max deflection is 10
- // and 30 is clamped angle to radial)
- // under 8km scale by 10.0
- // because the overstated error helps drive it to the radial in a
- // moderate cross wind.
- double adjustment = 0.0;
- if (nav_loc_dist > 8000) {
- adjustment = get_nav_cdi_deflection() * 3.0;
- } else {
- adjustment = get_nav_cdi_deflection() * 10.0;
- }
- SG_CLAMP_RANGE( adjustment, -30.0, 30.0 );
-
- // determine the target heading to fly to intercept the
- // tgt_radial
- nav_target_auto_hdg = nav_target_radial_true + adjustment;
- while ( nav_target_auto_hdg < 0.0 ) { nav_target_auto_hdg += 360.0; }
- while ( nav_target_auto_hdg > 360.0 ) { nav_target_auto_hdg -= 360.0; }
-
- // cross track error
- // ????
-
- // Calculate desired rate of climb for intercepting the GS
- double x = nav_gs_dist;
- double y = (alt_node->getDoubleValue() - nav_elev)
- * SG_FEET_TO_METER;
- double current_angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
-
- double target_angle = nav_target_gs;
- double gs_diff = target_angle - current_angle;
-
- // convert desired vertical path angle into a climb rate
- double des_angle = current_angle - 10 * gs_diff;
-
- // estimate horizontal speed towards ILS in meters per minute
- double dist = last_x - x;
- last_x = x;
- if ( dt > 0.0 ) {
- // avoid nan
- double new_vel = ( dist / dt );
-
- horiz_vel = 0.75 * horiz_vel + 0.25 * new_vel;
- // double horiz_vel = cur_fdm_state->get_V_ground_speed()
- // * SG_FEET_TO_METER * 60.0;
- // double horiz_vel = airspeed_node->getFloatValue()
- // * SG_FEET_TO_METER * 60.0;
-
- nav_gs_rate_of_climb = -sin( des_angle * SGD_DEGREES_TO_RADIANS )
- * horiz_vel * SG_METER_TO_FEET;
- }
- } else {
- nav_inrange = false;
- // cout << "not picking up vor. :-(" << endl;
- }
-
- if ( nav_valid && nav_inrange && nav_serviceable->getBoolValue() ) {
- // play station ident via audio system if on + ident,
- // otherwise turn it off
- if ( power_btn && (bus_power->getDoubleValue() > 1.0)
- && nav_ident_btn && audio_btn )
- {
- SGSoundSample *sound;
- sound = globals->get_soundmgr()->find( nav_fx_name );
- if ( sound != NULL ) {
- sound->set_volume( nav_vol_btn );
- } else {
- SG_LOG( SG_COCKPIT, SG_ALERT,
- "Can't find nav-vor-ident sound" );
- }
- sound = globals->get_soundmgr()->find( dme_fx_name );
- if ( sound != NULL ) {
- sound->set_volume( nav_vol_btn );
- } else {
- SG_LOG( SG_COCKPIT, SG_ALERT,
- "Can't find nav-dme-ident sound" );
- }
- // cout << "nav_last_time = " << nav_last_time << " ";
- // cout << "cur_time = "
- // << globals->get_time_params()->get_cur_time();
- if ( nav_last_time <
- globals->get_time_params()->get_cur_time() - 30 ) {
- nav_last_time = globals->get_time_params()->get_cur_time();
- nav_play_count = 0;
- }
- // cout << " nav_play_count = " << nav_play_count << endl;
- // cout << "playing = "
- // << globals->get_soundmgr()->is_playing(nav_fx_name)
- // << endl;
- if ( nav_play_count < 4 ) {
- // play VOR ident
- if ( !globals->get_soundmgr()->is_playing(nav_fx_name) ) {
- globals->get_soundmgr()->play_once( nav_fx_name );
- ++nav_play_count;
- }
- } else if ( nav_play_count < 5 && nav_has_dme ) {
- // play DME ident
- if ( !globals->get_soundmgr()->is_playing(nav_fx_name) &&
- !globals->get_soundmgr()->is_playing(dme_fx_name) ) {
- globals->get_soundmgr()->play_once( dme_fx_name );
- ++nav_play_count;
- }
- }
- } else {
- globals->get_soundmgr()->stop( nav_fx_name );
- globals->get_soundmgr()->stop( dme_fx_name );
- }
- }
-}
-
-
-// Update current nav/adf radio stations based on current postition
-void FGNavCom::search()
-{
- double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
- double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
- double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
-
- FGNavRecord *nav = NULL;
- FGNavRecord *loc = NULL;
- FGNavRecord *dme = NULL;
- FGNavRecord *gs = NULL;
-
- ////////////////////////////////////////////////////////////////////////
- // Nav.
- ////////////////////////////////////////////////////////////////////////
-
- nav = globals->get_navlist()->findByFreq(nav_freq, lon, lat, elev);
- dme = globals->get_dmelist()->findByFreq(nav_freq, lon, lat, elev);
- if ( nav == NULL ) {
- loc = globals->get_loclist()->findByFreq(nav_freq, lon, lat, elev);
- gs = globals->get_gslist()->findByFreq(nav_freq, lon, lat, elev);
- }
-
- if ( loc != NULL ) {
- nav_id = loc->get_ident();
- // cout << "localizer = " << nav_id << endl;
- nav_valid = true;
- if ( last_nav_id != nav_id || last_nav_vor ) {
- nav_trans_ident = loc->get_trans_ident();
- nav_target_radial = loc->get_multiuse();
- while ( nav_target_radial < 0.0 ) { nav_target_radial += 360.0; }
- while ( nav_target_radial > 360.0 ) { nav_target_radial -= 360.0; }
- nav_loclon = loc->get_lon();
- nav_loclat = loc->get_lat();
- nav_x = loc->get_x();
- nav_y = loc->get_y();
- nav_z = loc->get_z();
- last_nav_id = nav_id;
- last_nav_vor = false;
- nav_loc = true;
- nav_has_dme = (dme != NULL);
- nav_has_gs = (gs != NULL);
- if ( nav_has_gs ) {
- nav_gslon = gs->get_lon();
- nav_gslat = gs->get_lat();
- nav_elev = gs->get_elev_ft();
- int tmp = (int)(gs->get_multiuse() / 1000.0);
- nav_target_gs = (double)tmp / 100.0;
- nav_gs_x = gs->get_x();
- nav_gs_y = gs->get_y();
- nav_gs_z = gs->get_z();
-
- // derive GS baseline (perpendicular to the runay
- // along the ground)
- double tlon, tlat, taz;
- geo_direct_wgs_84 ( 0.0, nav_gslat, nav_gslon,
- nav_target_radial + 90,
- 100.0, &tlat, &tlon, &taz );
- // cout << "nav_target_radial = " << nav_target_radial << endl;
- // cout << "nav_loc = " << nav_loc << endl;
- // cout << nav_gslon << "," << nav_gslat << " "
- // << tlon << "," << tlat << " (" << nav_elev << ")"
- // << endl;
- Point3D p1 = sgGeodToCart( Point3D(tlon*SGD_DEGREES_TO_RADIANS,
- tlat*SGD_DEGREES_TO_RADIANS,
- nav_elev*SG_FEET_TO_METER)
- );
- // cout << nav_gs_x << "," << nav_gs_y << "," << nav_gs_z
- // << endl;
- // cout << p1 << endl;
- sgdSetVec3( gs_base_vec,
- p1.x()-nav_gs_x, p1.y()-nav_gs_y, p1.z()-nav_gs_z );
- // cout << gs_base_vec[0] << "," << gs_base_vec[1] << ","
- // << gs_base_vec[2] << endl;
- } else {
- nav_elev = loc->get_elev_ft();
- }
- nav_twist = 0;
- nav_range = FG_LOC_DEFAULT_RANGE;
- nav_effective_range = nav_range;
-
- if ( globals->get_soundmgr()->exists( nav_fx_name ) ) {
- globals->get_soundmgr()->remove( nav_fx_name );
- }
- SGSoundSample *sound;
- sound = morse.make_ident( nav_trans_ident, LO_FREQUENCY );
- sound->set_volume( 0.3 );
- globals->get_soundmgr()->add( sound, nav_fx_name );
-
- if ( globals->get_soundmgr()->exists( dme_fx_name ) ) {
- globals->get_soundmgr()->remove( dme_fx_name );
- }
- sound = morse.make_ident( nav_trans_ident, HI_FREQUENCY );
- sound->set_volume( 0.3 );
- globals->get_soundmgr()->add( sound, dme_fx_name );
-
- int offset = (int)(sg_random() * 30.0);
- nav_play_count = offset / 4;
- nav_last_time = globals->get_time_params()->get_cur_time() -
- offset;
- // cout << "offset = " << offset << " play_count = "
- // << nav_play_count
- // << " nav_last_time = " << nav_last_time
- // << " current time = "
- // << globals->get_time_params()->get_cur_time() << endl;
-
- // cout << "Found an loc station in range" << endl;
- // cout << " id = " << loc->get_locident() << endl;
- }
- } else if ( nav != NULL ) {
- nav_id = nav->get_ident();
- // cout << "nav = " << nav_id << endl;
- nav_valid = true;
- if ( last_nav_id != nav_id || !last_nav_vor ) {
- last_nav_id = nav_id;
- last_nav_vor = true;
- nav_trans_ident = nav->get_trans_ident();
- nav_loc = false;
- nav_has_dme = (dme != NULL);
- nav_has_gs = false;
- nav_loclon = nav->get_lon();
- nav_loclat = nav->get_lat();
- nav_elev = nav->get_elev_ft();
- nav_twist = nav->get_multiuse();
- nav_range = nav->get_range();
- nav_effective_range = adjustNavRange(nav_elev, elev, nav_range);
- nav_target_gs = 0.0;
- nav_target_radial = nav_sel_radial;
- nav_x = nav->get_x();
- nav_y = nav->get_y();
- nav_z = nav->get_z();
-
- if ( globals->get_soundmgr()->exists( nav_fx_name ) ) {
- globals->get_soundmgr()->remove( nav_fx_name );
- }
- SGSoundSample *sound;
- sound = morse.make_ident( nav_trans_ident, LO_FREQUENCY );
- sound->set_volume( 0.3 );
- if ( globals->get_soundmgr()->add( sound, nav_fx_name ) ) {
- // cout << "Added nav-vor-ident sound" << endl;
- } else {
- SG_LOG(SG_COCKPIT, SG_WARN, "Failed to add v1-vor-ident sound");
- }
-
- if ( globals->get_soundmgr()->exists( dme_fx_name ) ) {
- globals->get_soundmgr()->remove( dme_fx_name );
- }
- sound = morse.make_ident( nav_trans_ident, HI_FREQUENCY );
- sound->set_volume( 0.3 );
- globals->get_soundmgr()->add( sound, dme_fx_name );
-
- int offset = (int)(sg_random() * 30.0);
- nav_play_count = offset / 4;
- nav_last_time = globals->get_time_params()->get_cur_time() -
- offset;
- // cout << "offset = " << offset << " play_count = "
- // << nav_play_count << " nav_last_time = "
- // << nav_last_time << " current time = "
- // << globals->get_time_params()->get_cur_time() << endl;
-
- // cout << "Found a vor station in range" << endl;
- // cout << " id = " << nav->get_ident() << endl;
- }
- } else {
- nav_valid = false;
- nav_id = "";
- nav_target_radial = 0;
- nav_trans_ident = "";
- last_nav_id = "";
- if ( ! globals->get_soundmgr()->remove( nav_fx_name ) ) {
- SG_LOG(SG_COCKPIT, SG_WARN, "Failed to remove nav-vor-ident sound");
- }
- globals->get_soundmgr()->remove( dme_fx_name );
- // cout << "not picking up vor1. :-(" << endl;
- }
-}
-
-
-// return the amount of heading needle deflection, returns a value
-// clamped to the range of ( -10 , 10 )
-double FGNavCom::get_nav_cdi_deflection() const {
- double r;
-
- if ( nav_inrange
- && nav_serviceable->getBoolValue() && cdi_serviceable->getBoolValue() )
- {
- r = nav_radial - nav_target_radial;
- // cout << "Target radial = " << nav_target_radial
- // << " Actual radial = " << nav_radial << 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
- r = -r; // reverse, since radial is outbound
- if ( nav_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 cross track distance error, returns a meters
-double FGNavCom::get_nav_cdi_xtrack_error() const {
- double r, m;
-
- if ( nav_inrange
- && nav_serviceable->getBoolValue() && cdi_serviceable->getBoolValue() )
- {
- r = nav_radial - nav_target_radial;
- // cout << "Target radial = " << nav_target_radial
- // << " Actual radial = " << nav_radial
- // << " r = " << r << 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 );
-
- r = -r; // reverse, since radial is outbound
-
- m = nav_loc_dist * sin(r * SGD_DEGREES_TO_RADIANS);
-
- } else {
- m = 0.0;
- }
-
- return m;
-}
-
-// return the amount of glide slope needle deflection (.i.e. the
-// number of degrees we are off the glide slope * 5.0
-double FGNavCom::get_nav_gs_deflection() const {
- if ( nav_inrange && nav_has_gs
- && nav_serviceable->getBoolValue() && gs_serviceable->getBoolValue() )
- {
- double x = nav_gs_dist;
- double y = (fgGetDouble("/position/altitude-ft") - nav_elev)
- * SG_FEET_TO_METER;
- // cout << "dist = " << x << " height = " << y << endl;
- double angle = asin( y / x ) * SGD_RADIANS_TO_DEGREES;
- return (nav_target_gs - angle) * 5.0;
- } else {
- return 0.0;
- }
-}
-
-
-/**
- * Return true if the NAV TO flag should be active.
- */
-bool
-FGNavCom::get_nav_to_flag () const
-{
- if ( nav_inrange
- && nav_serviceable->getBoolValue()
- && tofrom_serviceable->getBoolValue() )
- {
- double offset = fabs(nav_radial - nav_target_radial);
- if (nav_loc) {
- return true;
- } else {
- return !(offset <= 90.0 || offset >= 270.0);
- }
- } else {
- return false;
- }
-}
-
-
-/**
- * Return true if the NAV FROM flag should be active.
- */
-bool
-FGNavCom::get_nav_from_flag () const
-{
- if ( nav_inrange
- && nav_serviceable->getBoolValue()
- && tofrom_serviceable->getBoolValue() ) {
- double offset = fabs(nav_radial - nav_target_radial);
- if (nav_loc) {
- return false;
- } else {
- return !(offset > 90.0 && offset < 270.0);
- }
- } else {
- return false;
- }
-}
-
-
-/**
- * Return the true heading to station
- */
-double
-FGNavCom::get_nav_heading () const
-{
- return nav_heading;
-}
-
-
-/**
- * Return the current radial.
- */
-double
-FGNavCom::get_nav_radial () const
-{
- return nav_radial;
-}
-
-double
-FGNavCom::get_nav_reciprocal_radial () const
-{
- double recip = nav_radial + 180;
- if ( recip >= 360 ) {
- recip -= 360;
- }
- return recip;
-}
+++ /dev/null
-// navcom.hxx -- class to manage a navcom instance
-//
-// Written by Curtis Olson, started April 2000.
-//
-// Copyright (C) 2000 - 2002 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
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifndef _FG_NAVCOM_HXX
-#define _FG_NAVCOM_HXX
-
-
-#include <Main/fg_props.hxx>
-
-#include <simgear/compiler.h>
-#include <simgear/structure/subsystem_mgr.hxx>
-#include <simgear/math/interpolater.hxx>
-#include <simgear/timing/timestamp.hxx>
-
-#include <Navaids/navlist.hxx>
-#include <Sound/morse.hxx>
-
-class FGNavCom : public SGSubsystem
-{
- FGMorse morse;
-
- SGInterpTable *term_tbl;
- SGInterpTable *low_tbl;
- SGInterpTable *high_tbl;
-
- SGPropertyNode *lon_node;
- SGPropertyNode *lat_node;
- SGPropertyNode *alt_node;
- SGPropertyNode *bus_power;
- SGPropertyNode *com_serviceable, *nav_serviceable;
- SGPropertyNode *cdi_serviceable, *gs_serviceable, *tofrom_serviceable;
-
- string last_nav_id;
- bool last_nav_vor;
- int nav_play_count;
- time_t nav_last_time;
-
- int index; // used for property binding
- char nav_fx_name[256];
- char dme_fx_name[256];
-
- bool need_update;
-
- bool power_btn;
- bool audio_btn;
-
- bool comm_valid;
- bool comm_inrange;
- double comm_freq;
- double comm_alt_freq;
- double comm_vol_btn;
- bool comm_ident_btn;
- double comm_x;
- double comm_y;
- double comm_z;
- double comm_dist;
- double comm_elev;
- double comm_range;
- double comm_effective_range;
-
- string nav_id;
- string nav_trans_ident;
- bool nav_valid;
- bool nav_inrange;
- bool nav_has_dme;
- bool nav_has_gs;
- bool nav_loc;
- double nav_freq;
- double nav_alt_freq;
- double nav_heading; // true heading to nav station
- double nav_radial; // current radial we are on (taking
- // into consideration the vor station
- // alignment which likely doesn't
- // match the magnetic alignment
- // exactly.)
- double nav_sel_radial;
- double nav_target_radial;
- double nav_target_radial_true;
- double nav_target_auto_hdg;
- double nav_loclon;
- double nav_loclat;
- double nav_x;
- double nav_y;
- double nav_z;
- double nav_loc_dist;
- double nav_gslon;
- double nav_gslat;
- double nav_elev; // use gs elev if available
- double nav_gs_x;
- double nav_gs_y;
- double nav_gs_z;
- sgdVec3 gs_base_vec;
- double nav_gs_dist;
- double nav_gs_dist_signed;
- double nav_gs_rate_of_climb;
- SGTimeStamp prev_time;
- SGTimeStamp curr_time;
- double nav_range;
- double nav_effective_range;
- double nav_target_gs;
- double nav_twist;
- double nav_vol_btn;
- bool nav_ident_btn;
- double horiz_vel;
- double last_x;
-
- // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
- double adjustNavRange( double stationElev, double aircraftElev,
- double nominalRange );
-
- // model standard ILS service volumes as per AIM 1-1-9
- double adjustILSRange( double stationElev, double aircraftElev,
- double offsetDegrees, double distance );
-
-public:
-
- FGNavCom();
- ~FGNavCom();
-
- void init ();
- void bind ();
- void unbind ();
- void update (double dt);
-
- // Update nav/adf radios based on current postition
- void search ();
-
- inline void set_bind_index( int i ) {
- index = i;
- sprintf( nav_fx_name, "nav%d-vor-ident", index );
- sprintf( dme_fx_name, "dme%d-vor-ident", index );
- }
-
- // NavCom Setters
- inline void set_power_btn( bool val ) { power_btn = val; }
- inline void set_audio_btn( bool val ) { audio_btn = val; }
-
- // COMM Setters
- inline void set_comm_freq( double freq ) {
- comm_freq = freq; need_update = true;
- }
- inline void set_comm_alt_freq( double freq ) { comm_alt_freq = freq; }
- inline void set_comm_vol_btn( double val ) {
- if ( val < 0.0 ) val = 0.0;
- if ( val > 1.0 ) val = 1.0;
- comm_vol_btn = val;
- }
- inline void set_comm_ident_btn( bool val ) { comm_ident_btn = val; }
-
- // NAV Setters
- inline void set_nav_freq( double freq ) {
- nav_freq = freq; need_update = true;
- }
- inline void set_nav_alt_freq( double freq ) { nav_alt_freq = freq; }
- inline void set_nav_sel_radial( double radial ) {
- nav_sel_radial = radial; need_update = true;
- }
- inline void set_nav_vol_btn( double val ) {
- if ( val < 0.0 ) val = 0.0;
- if ( val > 1.0 ) val = 1.0;
- nav_vol_btn = val;
- }
- inline void set_nav_ident_btn( bool val ) { nav_ident_btn = val; }
-
- // NavCom Accessors
- inline bool has_power() const {
- return power_btn && (bus_power->getDoubleValue() > 1.0);
- }
- inline bool get_power_btn() const { return power_btn; }
- inline bool get_audio_btn() const { return audio_btn; }
-
- // COMM Accessors
- inline double get_comm_freq () const { return comm_freq; }
- inline double get_comm_alt_freq () const { return comm_alt_freq; }
-
- // NAV Accessors
- inline double get_nav_freq () const { return nav_freq; }
- inline double get_nav_alt_freq () const { return nav_alt_freq; }
- inline double get_nav_sel_radial() const { return nav_sel_radial; }
- inline double get_nav_target_radial() const { return nav_target_radial; }
- inline double get_nav_target_radial_true() const {
- return nav_target_radial_true;
- }
- inline double get_nav_target_auto_hdg() const {
- return nav_target_auto_hdg;
- }
-
- // Calculated values.
- inline bool get_comm_inrange() const { return comm_inrange; }
- inline double get_comm_vol_btn() const { return comm_vol_btn; }
- inline bool get_comm_ident_btn() const { return comm_ident_btn; }
-
- inline bool get_nav_inrange() const { return nav_inrange; }
- bool get_nav_to_flag () const;
- bool get_nav_from_flag () const;
- inline bool get_nav_has_dme() const { return nav_has_dme; }
- inline bool get_nav_dme_inrange () const {
- return nav_inrange && nav_has_dme;
- }
- inline bool get_nav_has_gs() const { return nav_has_gs; }
- inline bool get_nav_loc() const { return nav_loc; }
- inline double get_nav_loclon() const { return nav_loclon; }
- inline double get_nav_loclat() const { return nav_loclat; }
- inline double get_nav_loc_dist() const { return nav_loc_dist; }
- inline double get_nav_gslon() const { return nav_gslon; }
- inline double get_nav_gslat() const { return nav_gslat; }
- inline double get_nav_gs_dist() const { return nav_gs_dist; }
- inline double get_nav_gs_dist_signed() const { return nav_gs_dist_signed; }
- inline double get_nav_gs_rate_of_climb() const {
- return nav_gs_rate_of_climb;
- }
- inline double get_nav_elev() const { return nav_elev; }
- double get_nav_heading() const;
- double get_nav_radial() const;
- double get_nav_reciprocal_radial() const;
- inline double get_nav_target_gs() const { return nav_target_gs; }
- inline double get_nav_twist() const { return nav_twist; }
- double get_nav_cdi_deflection() const;
- double get_nav_cdi_xtrack_error() const;
- double get_nav_gs_deflection() const;
- inline double get_nav_vol_btn() const { return nav_vol_btn; }
- inline bool get_nav_ident_btn() const { return nav_ident_btn; }
- inline const char * get_nav_id() const { return nav_id.c_str(); }
- inline int get_nav_id_c1() const { return nav_id.c_str()[0]; }
- inline int get_nav_id_c2() const { return nav_id.c_str()[1]; }
- inline int get_nav_id_c3() const { return nav_id.c_str()[2]; }
- inline int get_nav_id_c4() const { return nav_id.c_str()[3]; }
-};
-
-
-#endif // _FG_NAVCOM_HXX
projects / flightgear.git / commitdiff