87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
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// runwaybase.cxx -- a base class for runways and taxiways
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//
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// Written by James Turber, started December 2008.
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//
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// Copyright (C) 2000 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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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <simgear/compiler.h>
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#include "runwaybase.hxx"
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using std::string;
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/*
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* surface codes
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* 1 - asphalt
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* 2 - concrete
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* 3 - turf
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* 4 - dirt
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* 5 - gravel
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* 6 - asphalt helipad
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* 7 - concrete helipad
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* 8 - turf helipad
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* 9 - dirt helipad
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* 12 - lakebed
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*/
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FGRunwayBase::FGRunwayBase(Type aTy, const string& aIdent,
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const SGGeod& aGeod,
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const double heading, const double length,
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const double width,
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const int surface_code,
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bool index) :
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FGPositioned(aTy, aIdent, aGeod, index)
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{
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_heading = heading;
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_length = length;
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_width = width;
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_surface_code = surface_code;
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}
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SGGeod FGRunwayBase::pointOnCenterline(double aOffset) const
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{
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SGGeod result;
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double dummyAz2;
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double halfLengthMetres = lengthM() * 0.5;
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SGGeodesy::direct(mPosition, _heading,
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aOffset - halfLengthMetres,
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result, dummyAz2);
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return result;
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}
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bool FGRunwayBase::isHardSurface() const
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{
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return ((_surface_code == 1) || (_surface_code == 2));
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}
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FGTaxiway::FGTaxiway(const string& aIdent,
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const SGGeod& aGeod,
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const double heading, const double length,
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const double width,
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const int surface_code) :
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FGRunwayBase(TAXIWAY, aIdent, aGeod, heading, length, width, surface_code, false)
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{
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}
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