103 lines
3.5 KiB
C++
103 lines
3.5 KiB
C++
// ATCutils.hxx - Utility functions for the ATC / AI subsytem
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//
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// Written by David Luff, started March 2002.
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//
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// Copyright (C) 2002 David C Luff - david.luff@nottingham.ac.uk
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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#include <Airports/simple.hxx>
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#include <Airports/runways.hxx>
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#include <math.h>
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#include <simgear/math/point3d.hxx>
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#include <string>
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SG_USING_STD(string);
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// These are defined here because I had a problem with SG_DEGREES_TO_RADIANS
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#define DCL_PI 3.1415926535f
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#define DCL_DEGREES_TO_RADIANS (DCL_PI/180.0)
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#define DCL_RADIANS_TO_DEGREES (180.0/DCL_PI)
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/*******************************
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*
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* Communication functions
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*
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********************************/
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// Convert any number to spoken digits
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string ConvertNumToSpokenDigits(string n);
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// Convert a 2 digit rwy number to a spoken-style string
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string ConvertRwyNumToSpokenString(int n);
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// Convert rwy number string to a spoken-style string
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// eg "05L" to "zero five left"
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// Assumes we get a two-digit string optionally appended with R or L
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// eg 01 07L 29R 36
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// Anything else is not guaranteed to be handled correctly!
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string ConvertRwyNumToSpokenString(string s);
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// Return the phonetic letter of a letter represented as an integer 1->26
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string GetPhoneticIdent(int i);
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/*******************************
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*
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* Positional functions
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*
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********************************/
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// Given two positions (lat & lon in degrees), get the HORIZONTAL separation (in meters)
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double dclGetHorizontalSeparation(Point3D pos1, Point3D pos2);
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// Given a point and a line, get the HORIZONTAL shortest distance from the point to a point on the line.
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// Expects to be fed orthogonal co-ordinates, NOT lat & lon !
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double dclGetLinePointSeparation(double px, double py, double x1, double y1, double x2, double y2);
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// Given a position (lat/lon/elev), heading, vertical angle, and distance, calculate the new position.
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// Assumes that the ground is not hit!!! Expects heading and angle in degrees, distance in meters.
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Point3D dclUpdatePosition(Point3D pos, double heading, double angle, double distance);
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// Get a heading from one lat/lon to another (in degrees)
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double GetHeadingFromTo(Point3D A, Point3D B);
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// Given a heading (in degrees), bound it from 0 -> 360
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void dclBoundHeading(double &hdg);
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/*******************************
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*
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* Airport-related functions
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*
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********************************/
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// The next two functions are straight copies of their fg.... equivalents
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// in fg_init.cxx, and are just here temporarily until some rationalisation occurs.
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// find basic airport location info from airport database
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bool dclFindAirportID( const string& id, FGAirport *a );
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// get airport elevation
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double dclGetAirportElev( const string& id );
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/****************
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*
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* Runways
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*
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****************/
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// Given a Point3D (lon/lat/elev) and an FGRunway struct, determine if the point lies on the runway
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bool OnRunway(Point3D pt, FGRunway* rwy);
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