lunar.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_LUNAR_H
#define _LN_LUNAR_H

#include <libnova/ln_types.h>

#define LN_LUNAR_STANDART_HORIZON       0.125

#ifdef __cplusplus
extern "C" {
#endif

double LIBNOVA_EXPORT ln_get_lunar_sdiam(double JD);

int LIBNOVA_EXPORT ln_get_lunar_rst(double JD, struct ln_lnlat_posn *observer,
    struct ln_rst_time *rst);

/* ELP 2000-82B theory */
void LIBNOVA_EXPORT ln_get_lunar_geo_posn(double JD, struct ln_rect_posn *moon,
    double precision);

void LIBNOVA_EXPORT ln_get_lunar_equ_coords_prec(double JD,
    struct ln_equ_posn *position, double precision);

void LIBNOVA_EXPORT ln_get_lunar_equ_coords(double JD,
    struct ln_equ_posn *position);

void LIBNOVA_EXPORT ln_get_lunar_ecl_coords(double JD,
    struct ln_lnlat_posn *position, double precision);

double LIBNOVA_EXPORT ln_get_lunar_phase(double JD);

double LIBNOVA_EXPORT ln_get_lunar_disk(double JD);
    
double LIBNOVA_EXPORT ln_get_lunar_earth_dist(double JD);   
    
double LIBNOVA_EXPORT ln_get_lunar_bright_limb(double JD);

double LIBNOVA_EXPORT ln_get_lunar_long_asc_node(double JD);

double LIBNOVA_EXPORT ln_get_lunar_long_perigee(double JD);

double LIBNOVA_EXPORT ln_get_lunar_arg_latitude(double JD);

void LIBNOVA_EXPORT ln_get_lunar_opt_libr_coords(double JD, struct ln_lnlat_posn *position);

void LIBNOVA_EXPORT ln_get_lunar_subsolar_coords(double JD, struct ln_lnlat_posn *position);

double LIBNOVA_EXPORT ln_lunar_next_phase(double jd, double phase);

double LIBNOVA_EXPORT ln_lunar_previous_phase(double jd, double phase);

double LIBNOVA_EXPORT ln_lunar_next_apsis(double jd, int apogee);

double LIBNOVA_EXPORT ln_lunar_previous_apsis(double jd, int apogee);

double LIBNOVA_EXPORT ln_lunar_next_node(double jd, int mode);

double LIBNOVA_EXPORT ln_lunar_previous_node(double jd, int mode);

#ifdef __cplusplus
};
#endif

#endif