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50a14534 EB |
1 | /* |
2 | * viking -- GPS Data and Topo Analyzer, Explorer, and Manager | |
3 | * | |
4 | * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #ifndef _VIKING_VIKCOORD_H | |
23 | #define _VIKING_VIKCOORD_H | |
24 | ||
a25c4c50 GB |
25 | #include "coords.h" |
26 | ||
50a14534 EB |
27 | typedef gshort VikCoordMode; |
28 | #define VIK_COORD_UTM 0 | |
29 | #define VIK_COORD_LATLON 1 | |
30 | ||
31 | #define VIK_UTM(x) ((struct UTM *)(x)) | |
32 | #define VIK_LATLON(x) ((struct LatLon *)(x)) | |
33 | ||
34 | typedef struct { | |
35 | gdouble north_south; /* northing or lat */ | |
36 | gdouble east_west; /* easting or lon */ | |
37 | gchar utm_zone; | |
38 | gchar utm_letter; | |
39 | ||
40 | VikCoordMode mode; | |
41 | } VikCoord; | |
42 | /* notice we can cast to either UTM or LatLon */ | |
43 | /* possible more modes to come? xy? we'll leave that as an option */ | |
44 | ||
50a14534 EB |
45 | void vik_coord_convert(VikCoord *coord, VikCoordMode dest_mode); |
46 | void vik_coord_copy_convert(const VikCoord *coord, VikCoordMode dest_mode, VikCoord *dest); | |
47 | gdouble vik_coord_diff(const VikCoord *c1, const VikCoord *c2); | |
48 | ||
49 | void vik_coord_load_from_latlon ( VikCoord *coord, VikCoordMode mode, const struct LatLon *ll ); | |
50 | void vik_coord_load_from_utm ( VikCoord *coord, VikCoordMode mode, const struct UTM *utm ); | |
51 | ||
52 | void vik_coord_to_latlon ( const VikCoord *coord, struct LatLon *dest ); | |
53 | void vik_coord_to_utm ( const VikCoord *coord, struct UTM *dest ); | |
54 | ||
55 | gboolean vik_coord_equals ( const VikCoord *coord1, const VikCoord *coord2 ); | |
56 | ||
7114e879 QT |
57 | void vik_coord_set_area(const VikCoord *coord, const struct LatLon *wh, VikCoord *tl, VikCoord *br); |
58 | gboolean vik_coord_inside(const VikCoord *coord, const VikCoord *tl, const VikCoord *br); | |
50a14534 EB |
59 | /* all coord operations MUST BE ABSTRACTED!!! */ |
60 | ||
61 | #endif |