d6277068f5
Add a helper predicate to FGAirport to encapsulate the common 'does this airport have a suitable runway of at least xxxx ft?' query. Also add a FGPositioned filter built on the predicate, and a 'closest airport' helper.
243 lines
7.5 KiB
C++
243 lines
7.5 KiB
C++
// simple.hxx -- a really simplistic class to manage airport ID,
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// lat, lon of the center of one of it's runways, and
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// elevation in feet.
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//
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// Written by Curtis Olson, started April 1998.
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// Updated by Durk Talsma, started December 2004.
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//
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// Copyright (C) 1998 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_SIMPLE_HXX
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#define _FG_SIMPLE_HXX
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#include <simgear/compiler.h>
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#include <string>
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#include <map>
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#include <set>
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#include <vector>
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#include <simgear/math/point3d.hxx>
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#include "Navaids/positioned.hxx"
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// forward decls
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class FGAirportDynamics;
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class FGRunway;
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typedef SGSharedPtr<FGRunway> FGRunwayPtr;
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/***************************************************************************************
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*
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**************************************************************************************/
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class FGAirport : public FGPositioned
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{
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private:
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SGGeod _tower_location;
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std::string _name;
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bool _has_metar;
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FGAirportDynamics *_dynamics;
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public:
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FGAirport(const std::string& id, const SGGeod& location, const SGGeod& tower,
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const std::string& name, bool has_metar, Type aType);
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~FGAirport();
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const std::string& getId() const { return ident(); }
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const std::string& getName() const { return _name; }
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double getLongitude() const { return longitude(); }
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// Returns degrees
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double getLatitude() const { return latitude(); }
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// Returns ft
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double getElevation() const { return elevation(); }
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bool getMetar() const { return _has_metar; }
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bool isAirport() const;
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bool isSeaport() const;
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bool isHeliport() const;
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const SGGeod& getTowerLocation() const { return _tower_location; }
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void setMetar(bool value) { _has_metar = value; }
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FGRunway* getActiveRunwayForUsage() const;
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FGAirportDynamics *getDynamics();
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unsigned int numRunways() const;
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FGRunway* getRunwayByIndex(unsigned int aIndex) const;
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bool hasRunwayWithIdent(const std::string& aIdent) const;
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FGRunway* getRunwayByIdent(const std::string& aIdent) const;
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FGRunway* findBestRunwayForHeading(double aHeading) const;
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/**
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* Useful predicate for FMS/GPS/NAV displays and similar - check if this
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* aiport has a hard-surfaced runway of at least the specified length.
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* For the moment, hard means asphalt or concrete, not gravel or a
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* lake bed.
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*/
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bool hasHardRunwayOfLengthFt(double aLengthFt) const;
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unsigned int numTaxiways() const;
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FGRunway* getTaxiwayByIndex(unsigned int aIndex) const;
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void addRunway(FGRunway* aRunway);
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class AirportFilter : public Filter
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{
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public:
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virtual bool pass(FGPositioned* aPos) const {
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Type ty(aPos->type());
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return (ty >= AIRPORT) && (ty <= SEAPORT);
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}
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};
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class HardSurfaceFilter : public Filter
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{
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public:
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HardSurfaceFilter(double minLengthFt);
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virtual bool pass(FGPositioned* aPos) const;
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private:
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double mMinLengthFt;
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};
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/**
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* Syntactic wrapper around FGPositioned::findClosest - find the closest
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* match for filter, and return it cast to FGAirport. The default filter
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* passes all airports, including seaports and heliports.
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*/
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static FGAirport* findClosest(const SGGeod& aPos, double aCuttofNm, Filter* filter = NULL);
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private:
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typedef std::vector<FGRunwayPtr>::const_iterator Runway_iterator;
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/**
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* Helper to locate a runway by ident
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*/
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Runway_iterator getIteratorForRunwayIdent(const std::string& aIdent) const;
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FGAirport operator=(FGAirport &other);
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FGAirport(const FGAirport&);
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std::vector<FGRunwayPtr> mRunways;
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std::vector<FGRunwayPtr> mTaxiways;
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};
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class FGAirportSearchFilter {
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public:
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virtual ~FGAirportSearchFilter() {}
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// all airports pass the filter by default
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virtual bool pass(FGAirport*) { return true; }
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};
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class FGIdentOrdering {
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public:
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virtual ~FGIdentOrdering()
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{ ; }
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virtual bool compare(const std::string& aA, const std::string& aB) const
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{ return aA < aB; }
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};
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typedef std::map < std::string, FGAirport* > airport_map;
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typedef airport_map::iterator airport_map_iterator;
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typedef airport_map::const_iterator const_airport_map_iterator;
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typedef std::vector < FGAirport * > airport_list;
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typedef airport_list::iterator airport_list_iterator;
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typedef airport_list::const_iterator const_airport_list_iterator;
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class FGAirportList {
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private:
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airport_map airports_by_id;
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airport_list airports_array;
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public:
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// Constructor (new)
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FGAirportList();
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// Destructor
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~FGAirportList();
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// add an entry to the list
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FGAirport* add( const std::string& id, const SGGeod& location, const SGGeod& tower,
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const std::string& name, bool has_metar, FGPositioned::Type aType);
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// search for the specified id.
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// Returns NULL if unsucessfull.
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FGAirport* search( const std::string& id );
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// Search for the next airport in ASCII sequence to the supplied id.
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// eg. id = "KDC" or "KDCA" would both return "KDCA".
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// NOTE: Numbers come prior to A-Z in ASCII sequence so id = "LD" would return "LD57", not "LDDP"
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// optional ordering can make letters come before numbers
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// Implementation assumes airport codes are unique.
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// Returns NULL if unsucessfull.
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const FGAirport* findFirstById(const std::string& aIdent, FGIdentOrdering* aOrder = NULL);
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// search for the airport closest to the specified position
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// (currently a linear inefficient search so it's probably not
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// best to use this at runtime.) An FGAirportSearchFilter class
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// can be used to restrict the possible choices to a subtype.
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// max_range limits search - specified as an arc distance, in degrees
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FGAirport* search( double lon_deg, double lat_deg, double max_range );
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FGAirport* search( double lon_deg, double lat_deg, double max_range, FGAirportSearchFilter& );
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/**
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* Return the number of airports in the list.
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*/
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int size() const;
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/**
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* Return a specific airport, by position.
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*/
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const FGAirport *getAirport( unsigned int index ) const;
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/**
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* Return a pointer to the raw airport list
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*/
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inline const airport_list* getAirportList() { return (&airports_array); }
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/**
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* Mark the specified airport record as not having metar
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*/
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void no_metar( const std::string &id );
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/**
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* Mark the specified airport record as (yes) having metar
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*/
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void has_metar( const std::string &id );
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};
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// find basic airport location info from airport database
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const FGAirport *fgFindAirportID( const std::string& id);
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// get airport elevation
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double fgGetAirportElev( const std::string& id );
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// get airport position
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Point3D fgGetAirportPos( const std::string& id );
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#endif // _FG_SIMPLE_HXX
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