solar.h

/*
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *  
 *  Copyright (C) 2000 - 2005 Liam Girdwood  
 */
 
#ifndef _LN_SOLAR_H
#define _LN_SOLAR_H
 
#include <libnova/ln_types.h>
 
#define LN_SOLAR_STANDART_HORIZON              -0.8333
#define LN_SOLAR_CIVIL_HORIZON                 -6.0
#define LN_SOLAR_NAUTIC_HORIZON                -12.0 
#define LN_SOLAR_ASTRONOMICAL_HORIZON          -18.0
 
#ifdef __cplusplus
extern "C" {
#endif
 
int LIBNOVA_EXPORT ln_get_solar_rst_horizon(double JD,
    struct ln_lnlat_posn *observer, double horizon, struct ln_rst_time *rst);
 
int LIBNOVA_EXPORT ln_get_solar_rst(double JD, struct ln_lnlat_posn *observer,
    struct ln_rst_time *rst);
    
void LIBNOVA_EXPORT ln_get_solar_geom_coords(double JD,
    struct ln_helio_posn *position);
 
void LIBNOVA_EXPORT ln_get_solar_equ_coords(double JD,
    struct ln_equ_posn *position);
 
void LIBNOVA_EXPORT ln_get_solar_ecl_coords(double JD,
    struct ln_lnlat_posn *position);
 
void LIBNOVA_EXPORT ln_get_solar_geo_coords(double JD,
    struct ln_rect_posn *position);
 
double LIBNOVA_EXPORT ln_get_solar_sdiam(double JD);
 
#ifdef __cplusplus
};
#endif
 
#endif