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solar.h
1 /*
2 * This library is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU Lesser General Public
4 * License as published by the Free Software Foundation; either
5 * version 2 of the License, or (at your option) any later version.
6 *
7 * This library is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10 * Lesser General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15 *
16 * Copyright (C) 2000 - 2005 Liam Girdwood
17 */
18
19 #ifndef _LN_SOLAR_H
20 #define _LN_SOLAR_H
21
22 #include <libnova/ln_types.h>
23
24 #define LN_SOLAR_STANDART_HORIZON -0.8333
25 #define LN_SOLAR_CIVIL_HORIZON -6.0
26 #define LN_SOLAR_NAUTIC_HORIZON -12.0
27 #define LN_SOLAR_ASTRONOMICAL_HORIZON -18.0
28
29 #ifdef __cplusplus
30 extern "C" {
31 #endif
32
45 int LIBNOVA_EXPORT ln_get_solar_rst_horizon (double JD, struct ln_lnlat_posn * observer, double horizon, struct ln_rst_time * rst);
46
51 int LIBNOVA_EXPORT ln_get_solar_rst (double JD, struct ln_lnlat_posn * observer, struct ln_rst_time * rst);
52
57 void LIBNOVA_EXPORT ln_get_solar_geom_coords (double JD, struct ln_helio_posn * position);
58
63 void LIBNOVA_EXPORT ln_get_solar_equ_coords (double JD, struct ln_equ_posn * position);
64
69 void LIBNOVA_EXPORT ln_get_solar_ecl_coords (double JD, struct ln_lnlat_posn * position);
70
75 void LIBNOVA_EXPORT ln_get_solar_geo_coords (double JD, struct ln_rect_posn * position);
76
81 double LIBNOVA_EXPORT ln_get_solar_sdiam (double JD);
82
83 #ifdef __cplusplus
84 };
85 #endif
86
87 #endif
ln_get_solar_rst
int LIBNOVA_EXPORT ln_get_solar_rst(double JD, struct ln_lnlat_posn *observer, struct ln_rst_time *rst)
Calculate the time of rise, set and transit for the Sun.
Definition: solar.c:139
ln_rect_posn
Rectangular coordinates.
Definition: ln_types.h:237
ln_get_solar_geom_coords
void LIBNOVA_EXPORT ln_get_solar_geom_coords(double JD, struct ln_helio_posn *position)
Calculate solar geometric coordinates.
Definition: solar.c:39
ln_equ_posn
Equatorial Coordinates.
Definition: ln_types.h:170
ln_lnlat_posn
Ecliptical (or celestial) Longitude and Latitude.
Definition: ln_types.h:200
ln_get_solar_rst_horizon
int LIBNOVA_EXPORT ln_get_solar_rst_horizon(double JD, struct ln_lnlat_posn *observer, double horizon, struct ln_rst_time *rst)
Return solar rise/set time over local horizon (specified in degrees).
Definition: solar.c:129
ln_rst_time
Rise, Set and Transit times.
Definition: ln_types.h:317
ln_get_solar_sdiam
double LIBNOVA_EXPORT ln_get_solar_sdiam(double JD)
Calculate the semidiameter of the Sun in arc seconds.
Definition: solar.c:151
ln_helio_posn
Heliocentric position.
Definition: ln_types.h:216
ln_get_solar_ecl_coords
void LIBNOVA_EXPORT ln_get_solar_ecl_coords(double JD, struct ln_lnlat_posn *position)
Calculate apparent ecliptical coordinates.
Definition: solar.c:87
ln_get_solar_equ_coords
void LIBNOVA_EXPORT ln_get_solar_equ_coords(double JD, struct ln_equ_posn *position)
Calculate apparent equatorial coordinates.
Definition: solar.c:56
ln_get_solar_geo_coords
void LIBNOVA_EXPORT ln_get_solar_geo_coords(double JD, struct ln_rect_posn *position)
Calculate geocentric coordinates (rectangular)
Definition: solar.c:116