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transform.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_TRANSFORM_H
20 #define _LN_TRANSFORM_H
21
22 #include <libnova/ln_types.h>
23
24 #ifdef __cplusplus
25 extern "C" {
26 #endif
27
37 /* Use get_mean_sidereal_time, get_hrz_from_equ_siderealtime */
38 void LIBNOVA_EXPORT ln_get_hrz_from_equ (struct ln_equ_posn * object, struct ln_lnlat_posn * observer, double JD, struct ln_hrz_posn *position);
39
45 /* Equ 12.5,12.6 pg 88 */
46 void LIBNOVA_EXPORT ln_get_hrz_from_equ_sidereal_time (struct ln_equ_posn * object, struct ln_lnlat_posn * observer, double sidereal, struct ln_hrz_posn *position);
47
52 /* Equ 12.3, 12.4 pg 89 */
53 void LIBNOVA_EXPORT ln_get_equ_from_ecl (struct ln_lnlat_posn * object, double JD, struct ln_equ_posn * position);
54
59 /* Equ 12.1, 12.2 Pg 88 */
60 void LIBNOVA_EXPORT ln_get_ecl_from_equ (struct ln_equ_posn * object, double JD, struct ln_lnlat_posn * position);
61
66 /* Pg 89 */
67 void LIBNOVA_EXPORT ln_get_equ_from_hrz (struct ln_hrz_posn *object, struct ln_lnlat_posn * observer, double JD, struct ln_equ_posn * position);
68
73 /* Pg ?? */
74 void LIBNOVA_EXPORT ln_get_rect_from_helio (struct ln_helio_posn *object, struct ln_rect_posn * position);
75
80 /* Equ 33.2
81 */
82 void LIBNOVA_EXPORT ln_get_ecl_from_rect (struct ln_rect_posn * rect, struct ln_lnlat_posn * posn);
83
88 /* Pg 94 */
89 void LIBNOVA_EXPORT ln_get_equ_from_gal (struct ln_gal_posn *gal, struct ln_equ_posn *equ);
90
95 void LIBNOVA_EXPORT ln_get_equ2000_from_gal (struct ln_gal_posn *gal, struct ln_equ_posn *equ);
96
101 /* Pg 94 */
102 void LIBNOVA_EXPORT ln_get_gal_from_equ (struct ln_equ_posn *equ, struct ln_gal_posn *gal);
103
108 void LIBNOVA_EXPORT ln_get_gal_from_equ2000 (struct ln_equ_posn *equ, struct ln_gal_posn *gal);
109
110 #ifdef __cplusplus
111 };
112 #endif
113
114 #endif
ln_get_equ_from_gal
void LIBNOVA_EXPORT ln_get_equ_from_gal(struct ln_gal_posn *gal, struct ln_equ_posn *equ)
Transform an object galactic coordinates into equatorial coordinates.
Definition: transform.c:272
ln_rect_posn
Rectangular coordinates.
Definition: ln_types.h:237
ln_hrz_posn
Horizontal Coordinates.
Definition: ln_types.h:184
ln_get_gal_from_equ2000
void LIBNOVA_EXPORT ln_get_gal_from_equ2000(struct ln_equ_posn *equ, struct ln_gal_posn *gal)
Transform an object J2000 equatorial coordinates into galactic coordinates.
Definition: transform.c:348
ln_equ_posn
Equatorial Coordinates.
Definition: ln_types.h:170
ln_get_ecl_from_equ
void LIBNOVA_EXPORT ln_get_ecl_from_equ(struct ln_equ_posn *object, double JD, struct ln_lnlat_posn *position)
Calculate ecliptical coordinates from equatorial coordinates.
Definition: transform.c:227
ln_lnlat_posn
Ecliptical (or celestial) Longitude and Latitude.
Definition: ln_types.h:200
ln_get_equ_from_hrz
void LIBNOVA_EXPORT ln_get_equ_from_hrz(struct ln_hrz_posn *object, struct ln_lnlat_posn *observer, double JD, struct ln_equ_posn *position)
Calculate equatorial coordinates from horizontal coordinates.
Definition: transform.c:155
ln_get_gal_from_equ
void LIBNOVA_EXPORT ln_get_gal_from_equ(struct ln_equ_posn *equ, struct ln_gal_posn *gal)
Transform an object equatorial coordinates into galactic coordinates.
Definition: transform.c:316
ln_get_equ2000_from_gal
void LIBNOVA_EXPORT ln_get_equ2000_from_gal(struct ln_gal_posn *gal, struct ln_equ_posn *equ)
Transform an object galactic coordinate into J2000 equatorial coordinates.
Definition: transform.c:303
ln_helio_posn
Heliocentric position.
Definition: ln_types.h:216
ln_get_equ_from_ecl
void LIBNOVA_EXPORT ln_get_equ_from_ecl(struct ln_lnlat_posn *object, double JD, struct ln_equ_posn *position)
Calculate equatorial coordinates from ecliptical coordinates.
Definition: transform.c:192
ln_get_rect_from_helio
void LIBNOVA_EXPORT ln_get_rect_from_helio(struct ln_helio_posn *object, struct ln_rect_posn *position)
Calculate geocentric coordinates from heliocentric coordinates.
Definition: transform.c:36
ln_gal_posn
Galactic coordinates.
Definition: ln_types.h:252
ln_get_hrz_from_equ_sidereal_time
void LIBNOVA_EXPORT ln_get_hrz_from_equ_sidereal_time(struct ln_equ_posn *object, struct ln_lnlat_posn *observer, double sidereal, struct ln_hrz_posn *position)
Calculate horizontal coordinates from equatorial coordinates, using mean sidereal time...
Definition: transform.c:85
ln_get_ecl_from_rect
void LIBNOVA_EXPORT ln_get_ecl_from_rect(struct ln_rect_posn *rect, struct ln_lnlat_posn *posn)
Transform an objects rectangular coordinates into ecliptical coordinates.
Definition: transform.c:256
ln_get_hrz_from_equ
void LIBNOVA_EXPORT ln_get_hrz_from_equ(struct ln_equ_posn *object, struct ln_lnlat_posn *observer, double JD, struct ln_hrz_posn *position)
Calculate horizontal coordinates from equatorial coordinates.
Definition: transform.c:75