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1eda0c35 | 1 | %headertop{ |
2 | #ifdef HAVE_CONFIG_H | |
3 | #include "config.h" | |
4 | #endif | |
5 | ||
6 | #include "vikcoord.h" | |
7 | #include "mapcoord.h" | |
8 | #include "vik-map-type.h" | |
9 | %} | |
10 | ||
11 | %{ | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <string.h> | |
16 | #include <glib/gi18n.h> | |
17 | #include <gtk/gtk.h> | |
18 | #include <math.h> | |
19 | #include <string.h> | |
20 | #include "coords.h" | |
21 | #include "vikcoord.h" | |
22 | #include "mapcoord.h" | |
23 | #include "download.h" | |
24 | #include "curl_download.h" | |
25 | #include "globals.h" | |
26 | #include "google.h" | |
27 | #include "vikmapslayer.h" | |
28 | %} | |
29 | ||
30 | %h{ | |
31 | ||
32 | %} | |
33 | ||
34 | %{ | |
35 | ||
36 | static DownloadOptions osm_options = { NULL, 0, a_check_map_file }; | |
37 | ||
38 | /* 1 << (x) is like a 2**(x) */ | |
39 | #define GZ(x) (1<<(x)) | |
40 | ||
41 | static const gdouble scale_mpps[] = { GZ(0), GZ(1), GZ(2), GZ(3), GZ(4), GZ(5), GZ(6), GZ(7), GZ(8), GZ(9), | |
42 | GZ(10), GZ(11), GZ(12), GZ(13), GZ(14), GZ(15), GZ(16), GZ(17) }; | |
43 | ||
44 | static const gint num_scales = (sizeof(scale_mpps) / sizeof(scale_mpps[0])); | |
45 | ||
46 | #define ERROR_MARGIN 0.01 | |
47 | guint8 osm_zoom ( gdouble mpp ) { | |
48 | gint i; | |
49 | for ( i = 0; i < num_scales; i++ ) { | |
50 | if ( ABS(scale_mpps[i] - mpp) < ERROR_MARGIN ) | |
51 | return i; | |
52 | } | |
53 | return 255; | |
54 | } | |
55 | ||
56 | %} | |
57 | ||
58 | class Osm:Map:Type from Vik:Map:Type { | |
59 | private gchar *hostname; | |
60 | ||
61 | private gchar *filename_format; | |
62 | ||
63 | override (Vik:Map:Type) gboolean | |
64 | coord_to_mapcoord ( Vik:Map:Type *self, const VikCoord *src, gdouble xzoom, gdouble yzoom, MapCoord *dest ) | |
65 | { | |
66 | g_assert ( src->mode == VIK_COORD_LATLON ); | |
67 | ||
68 | if ( xzoom != yzoom ) | |
69 | return FALSE; | |
70 | ||
71 | dest->scale = osm_zoom ( xzoom ); | |
72 | if ( dest->scale == 255 ) | |
73 | return FALSE; | |
74 | ||
75 | dest->x = (src->east_west + 180) / 360 * GZ(17) / xzoom; | |
76 | dest->y = (180 - MERCLAT(src->north_south)) / 360 * GZ(17) / xzoom; | |
77 | dest->z = 0; | |
78 | return TRUE; | |
79 | } | |
80 | ||
81 | override (Vik:Map:Type) void | |
82 | mapcoord_to_center_coord ( Vik:Map:Type *self, MapCoord *src, VikCoord *dest ) | |
83 | { | |
84 | gdouble socalled_mpp = GZ(src->scale); | |
85 | dest->mode = VIK_COORD_LATLON; | |
86 | dest->east_west = ((src->x+0.5) / GZ(17) * socalled_mpp * 360) - 180; | |
87 | dest->north_south = DEMERCLAT(180 - ((src->y+0.5) / GZ(17) * socalled_mpp * 360)); | |
88 | } | |
89 | ||
90 | override (Vik:Map:Type) int | |
91 | download ( Vik:Map:Type *self, MapCoord *src, const gchar *dest_fn ) | |
92 | { | |
93 | int res = -1; | |
94 | gchar *uri = g_strdup_printf ( OSM_MAP_TYPE(self)->_priv->filename_format, | |
95 | 17 - src->scale, src->x, src->y ); | |
96 | res = a_http_download_get_url ( OSM_MAP_TYPE(self)->_priv->hostname, | |
97 | uri, dest_fn, &osm_options ); | |
98 | g_free ( uri ); | |
99 | return res; | |
100 | } | |
101 | } |