229 lines
6.4 KiB
C++
229 lines
6.4 KiB
C++
// navrecord.hxx -- generic vor/dme/ndb class
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//
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// Written by Curtis Olson, started May 2004.
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//
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// Copyright (C) 2004 Curtis L. Olson - http://www.flightgear.org/~curt
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// $Id$
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#ifndef _FG_NAVRECORD_HXX
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#define _FG_NAVRECORD_HXX
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#include <stdio.h>
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#include <simgear/compiler.h>
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#include <simgear/math/sg_geodesy.hxx>
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#include <simgear/misc/sgstream.hxx>
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#include <simgear/magvar/magvar.hxx>
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#include <simgear/timing/sg_time.hxx>
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#ifdef SG_HAVE_STD_INCLUDES
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# include <istream>
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#elif defined( __BORLANDC__ ) || (__APPLE__)
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# include <iostream>
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#else
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# include <istream.h>
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#endif
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SG_USING_STD(istream);
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#define FG_NAV_DEFAULT_RANGE 50 // nm
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#define FG_LOC_DEFAULT_RANGE 18 // nm
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#define FG_DME_DEFAULT_RANGE 50 // nm
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#define FG_NAV_MAX_RANGE 300 // nm
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// Shield the rest of FG from possibly changing details of Robins navaid type numbering system.
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// Currently only the GPS code uses this - extra types (LOC, GS etc) may need to be added
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// should other FG code choose to use this.
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enum fg_nav_types {
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FG_NAV_VOR,
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FG_NAV_NDB,
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FG_NAV_ILS,
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FG_NAV_ANY
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};
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class FGNavRecord {
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int type;
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SGGeod pos; // location in geodetic coords (degrees)
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SGVec3d cart; // location in cartesian coords (earth centered)
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int freq;
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int range;
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double multiuse; // can be slaved variation of VOR
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// (degrees) or localizer heading
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// (degrees) or dme bias (nm)
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string ident; // navaid ident
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string name; // verbose name in nav database
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string apt_id; // corresponding airport id
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bool serviceable; // for failure modeling
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string trans_ident; // for failure modeling
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public:
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inline FGNavRecord(void);
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inline ~FGNavRecord(void) {}
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inline int get_type() const { return type; }
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inline fg_nav_types get_fg_type() const;
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inline double get_lon() const { return pos.getLongitudeDeg(); } // degrees
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inline void set_lon( double l ) { pos.setLongitudeDeg(l); } // degrees
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inline double get_lat() const { return pos.getLatitudeDeg(); } // degrees
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inline void set_lat( double l ) { pos.setLatitudeDeg(l); } // degrees
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inline double get_elev_ft() const { return pos.getElevationFt(); }
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inline void set_elev_ft( double e ) { pos.setElevationFt(e); }
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const SGGeod& get_pos() const { return pos; }
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const SGVec3d& get_cart() const { return cart; }
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inline int get_freq() const { return freq; }
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inline int get_range() const { return range; }
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inline double get_multiuse() const { return multiuse; }
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inline void set_multiuse( double m ) { multiuse = m; }
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inline const char *get_ident() const { return ident.c_str(); }
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inline const string& get_name() const { return name; }
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inline const string& get_apt_id() const { return apt_id; }
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inline bool get_serviceable() const { return serviceable; }
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inline const char *get_trans_ident() const { return trans_ident.c_str(); }
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friend istream& operator>> ( istream&, FGNavRecord& );
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};
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inline
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FGNavRecord::FGNavRecord(void) :
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type(0),
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pos(SGGeod::fromDeg(0, 0)),
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cart(0, 0, 0),
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freq(0),
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range(0),
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multiuse(0.0),
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ident(""),
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name(""),
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apt_id(""),
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serviceable(true),
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trans_ident("")
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{
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}
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inline fg_nav_types FGNavRecord::get_fg_type() const {
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switch(type) {
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case 2: return(FG_NAV_NDB);
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case 3: return(FG_NAV_VOR);
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case 4: return(FG_NAV_ILS);
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default: return(FG_NAV_ANY);
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}
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}
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inline istream&
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operator >> ( istream& in, FGNavRecord& n )
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{
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in >> n.type;
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if ( n.type == 99 ) {
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return in >> skipeol;
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}
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double lat, lon, elev_ft;
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in >> lat >> lon >> elev_ft >> n.freq >> n.range >> n.multiuse
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>> n.ident;
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n.pos.setLatitudeDeg(lat);
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n.pos.setLongitudeDeg(lon);
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n.pos.setElevationFt(elev_ft);
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getline( in, n.name );
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// silently multiply adf frequencies by 100 so that adf
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// vs. nav/loc frequency lookups can use the same code.
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if ( n.type == 2 ) {
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n.freq *= 100;
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}
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// Remove any leading spaces before the name
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while ( n.name.substr(0,1) == " " ) {
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n.name = n.name.erase(0,1);
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}
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if ( n.type >= 4 && n.type <= 9 ) {
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// these types are always associated with an airport id
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string::size_type pos = n.name.find(" ");
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n.apt_id = n.name.substr(0, pos);
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}
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// Ranges are included with the latest data format, no need to
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// assign our own defaults, unless the range is not set for some
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// reason.
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if ( n.range < 0.1 ) {
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// assign default ranges
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if ( n.type == 2 || n.type == 3 ) {
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n.range = FG_NAV_DEFAULT_RANGE;
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} else if ( n.type == 4 || n.type == 5 || n.type == 6 ) {
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n.range = FG_LOC_DEFAULT_RANGE;
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} else if ( n.type == 12 ) {
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n.range = FG_DME_DEFAULT_RANGE;
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} else {
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n.range = FG_LOC_DEFAULT_RANGE;
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}
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}
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// transmitted ident (same as ident unless modeling a fault)
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n.trans_ident = n.ident;
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// generate cartesian coordinates
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n.cart = SGVec3d::fromGeod(n.pos);
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return in;
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}
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class FGTACANRecord {
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string channel;
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int freq;
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public:
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inline FGTACANRecord(void);
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inline ~FGTACANRecord(void) {}
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inline const string& get_channel() const { return channel; }
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inline int get_freq() const { return freq; }
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friend istream& operator>> ( istream&, FGTACANRecord& );
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};
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inline
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FGTACANRecord::FGTACANRecord(void) :
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channel(""),
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freq(0)
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{
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}
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inline istream&
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operator >> ( istream& in, FGTACANRecord& n )
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{
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in >> n.channel >> n.freq ;
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//getline( in, n.name );
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return in;
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}
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#endif // _FG_NAVRECORD_HXX
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