// area.h -- routines to assist with inserting "areas" into FG terrain
//
// Written by Curtis Olson, started February 1998.
//
// Copyright (C) 1998  Curtis L. Olson  - curt@me.umn.edu
//
// 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 _AREA_H
#define _AREA_H


typedef struct {
    union {
	double x;
	double dist;
	double lon;
    };
    union {
	double y;
	double theta;
	double lat;
    };
} point2d;


// generate an area for a runway
void gen_runway_area( double lon, double lat, double heading, 
		      double length, double width,
		      point2d *result, int *count );


#endif // _AREA_H