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1 | /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */ | |
2 | /* | |
3 | * viking | |
4 | * Copyright (C) 2009, Guilhem Bonnefille <guilhem.bonnefille@gmail.com> | |
5 | * | |
6 | * viking is free software: you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * viking is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
14 | * See the GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | #ifdef HAVE_CONFIG_H | |
20 | #include "config.h" | |
21 | #endif | |
22 | ||
23 | #ifdef HAVE_MATH_H | |
24 | #include <math.h> | |
25 | #endif | |
26 | ||
27 | #include "globals.h" | |
28 | #include "terraservermapsource.h" | |
29 | ||
30 | static gboolean _coord_to_mapcoord ( VikMapSource *self, const VikCoord *src, gdouble xzoom, gdouble yzoom, MapCoord *dest ); | |
31 | static void _mapcoord_to_center_coord ( VikMapSource *self, MapCoord *src, VikCoord *dest ); | |
32 | ||
33 | static gchar *_get_uri( VikMapSourceDefault *self, MapCoord *src ); | |
34 | static gchar *_get_hostname( VikMapSourceDefault *self ); | |
35 | static DownloadMapOptions *_get_download_options( VikMapSourceDefault *self ); | |
36 | ||
37 | /* FIXME Huge gruik */ | |
38 | static DownloadMapOptions terraserver_options = { FALSE, FALSE, NULL, 0, a_check_map_file }; | |
39 | ||
40 | typedef struct _TerraserverMapSourcePrivate TerraserverMapSourcePrivate; | |
41 | struct _TerraserverMapSourcePrivate | |
42 | { | |
43 | guint8 type; | |
44 | }; | |
45 | ||
46 | #define TERRASERVER_MAP_SOURCE_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), TERRASERVER_TYPE_MAP_SOURCE, TerraserverMapSourcePrivate)) | |
47 | ||
48 | /* properties */ | |
49 | enum | |
50 | { | |
51 | PROP_0, | |
52 | ||
53 | PROP_TYPE, | |
54 | }; | |
55 | ||
56 | G_DEFINE_TYPE (TerraserverMapSource, terraserver_map_source, VIK_TYPE_MAP_SOURCE_DEFAULT); | |
57 | ||
58 | static void | |
59 | terraserver_map_source_init (TerraserverMapSource *self) | |
60 | { | |
61 | /* initialize the object here */ | |
62 | g_object_set (G_OBJECT (self), | |
63 | "tilesize-x", 200, | |
64 | "tilesize-y", 200, | |
65 | "drawmode", VIK_VIEWPORT_DRAWMODE_UTM, | |
66 | NULL); | |
67 | } | |
68 | ||
69 | static void | |
70 | terraserver_map_source_finalize (GObject *object) | |
71 | { | |
72 | /* TODO: Add deinitalization code here */ | |
73 | ||
74 | G_OBJECT_CLASS (terraserver_map_source_parent_class)->finalize (object); | |
75 | } | |
76 | ||
77 | static void | |
78 | terraserver_map_source_set_property (GObject *object, | |
79 | guint property_id, | |
80 | const GValue *value, | |
81 | GParamSpec *pspec) | |
82 | { | |
83 | TerraserverMapSource *self = TERRASERVER_MAP_SOURCE (object); | |
84 | TerraserverMapSourcePrivate *priv = TERRASERVER_MAP_SOURCE_PRIVATE (self); | |
85 | ||
86 | switch (property_id) | |
87 | { | |
88 | case PROP_TYPE: | |
89 | priv->type = g_value_get_uint (value); | |
90 | break; | |
91 | ||
92 | default: | |
93 | /* We don't have any other property... */ | |
94 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); | |
95 | break; | |
96 | } | |
97 | } | |
98 | ||
99 | static void | |
100 | terraserver_map_source_get_property (GObject *object, | |
101 | guint property_id, | |
102 | GValue *value, | |
103 | GParamSpec *pspec) | |
104 | { | |
105 | TerraserverMapSource *self = TERRASERVER_MAP_SOURCE (object); | |
106 | TerraserverMapSourcePrivate *priv = TERRASERVER_MAP_SOURCE_PRIVATE (self); | |
107 | ||
108 | switch (property_id) | |
109 | { | |
110 | case PROP_TYPE: | |
111 | g_value_set_uint (value, priv->type); | |
112 | break; | |
113 | ||
114 | default: | |
115 | /* We don't have any other property... */ | |
116 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); | |
117 | break; | |
118 | } | |
119 | } | |
120 | ||
121 | static void | |
122 | terraserver_map_source_class_init (TerraserverMapSourceClass *klass) | |
123 | { | |
124 | GObjectClass* object_class = G_OBJECT_CLASS (klass); | |
125 | VikMapSourceClass* grandparent_class = VIK_MAP_SOURCE_CLASS (klass); | |
126 | VikMapSourceDefaultClass* parent_class = VIK_MAP_SOURCE_DEFAULT_CLASS (klass); | |
127 | GParamSpec *pspec = NULL; | |
128 | ||
129 | object_class->set_property = terraserver_map_source_set_property; | |
130 | object_class->get_property = terraserver_map_source_get_property; | |
131 | ||
132 | /* Overiding methods */ | |
133 | grandparent_class->coord_to_mapcoord = _coord_to_mapcoord; | |
134 | grandparent_class->mapcoord_to_center_coord = _mapcoord_to_center_coord; | |
135 | ||
136 | parent_class->get_uri = _get_uri; | |
137 | parent_class->get_hostname = _get_hostname; | |
138 | parent_class->get_download_options = _get_download_options; | |
139 | ||
140 | pspec = g_param_spec_uint ("type", | |
141 | "Type", | |
142 | "Type of Terraserver map", | |
143 | 0 /* minimum value */, | |
144 | G_MAXUINT8 /* maximum value */, | |
145 | 0 /* default value */, | |
146 | G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE); | |
147 | g_object_class_install_property (object_class, PROP_TYPE, pspec); | |
148 | ||
149 | g_type_class_add_private (klass, sizeof (TerraserverMapSourcePrivate)); | |
150 | ||
151 | object_class->finalize = terraserver_map_source_finalize; | |
152 | } | |
153 | ||
154 | #define TERRASERVER_SITE "msrmaps.com" | |
155 | #define MARGIN_OF_ERROR 0.001 | |
156 | ||
157 | static int mpp_to_scale ( gdouble mpp, guint8 type ) | |
158 | { | |
159 | mpp *= 4; | |
160 | gint t = (gint) mpp; | |
161 | if ( ABS(mpp - t) > MARGIN_OF_ERROR ) | |
162 | return FALSE; | |
163 | ||
164 | switch ( t ) { | |
165 | case 1: return (type == 4) ? 8 : 0; | |
166 | case 2: return (type == 4) ? 9 : 0; | |
167 | case 4: return (type != 2) ? 10 : 0; | |
168 | case 8: return 11; | |
169 | case 16: return 12; | |
170 | case 32: return 13; | |
171 | case 64: return 14; | |
172 | case 128: return 15; | |
173 | case 256: return 16; | |
174 | case 512: return 17; | |
175 | case 1024: return 18; | |
176 | case 2048: return 19; | |
177 | default: return 0; | |
178 | } | |
179 | } | |
180 | ||
181 | static gdouble scale_to_mpp ( gint scale ) | |
182 | { | |
183 | return pow(2,scale - 10); | |
184 | } | |
185 | ||
186 | static gboolean | |
187 | _coord_to_mapcoord ( VikMapSource *self, const VikCoord *src, gdouble xmpp, gdouble ympp, MapCoord *dest ) | |
188 | { | |
189 | g_return_val_if_fail(TERRASERVER_IS_MAP_SOURCE(self), FALSE); | |
190 | ||
191 | TerraserverMapSourcePrivate *priv = TERRASERVER_MAP_SOURCE_PRIVATE(self); | |
192 | int type = priv->type; | |
193 | if ( src->mode != VIK_COORD_UTM ) | |
194 | return FALSE; | |
195 | ||
196 | if ( xmpp != ympp ) | |
197 | return FALSE; | |
198 | ||
199 | dest->scale = mpp_to_scale ( xmpp, type ); | |
200 | if ( ! dest->scale ) | |
201 | return FALSE; | |
202 | ||
203 | dest->x = (gint)(((gint)(src->east_west))/(200*xmpp)); | |
204 | dest->y = (gint)(((gint)(src->north_south))/(200*xmpp)); | |
205 | dest->z = src->utm_zone; | |
206 | return TRUE; | |
207 | } | |
208 | ||
209 | static void | |
210 | _mapcoord_to_center_coord ( VikMapSource *self, MapCoord *src, VikCoord *dest ) | |
211 | { | |
212 | // FIXME: slowdown here! | |
213 | gdouble mpp = scale_to_mpp ( src->scale ); | |
214 | dest->mode = VIK_COORD_UTM; | |
215 | dest->utm_zone = src->z; | |
216 | dest->east_west = ((src->x * 200) + 100) * mpp; | |
217 | dest->north_south = ((src->y * 200) + 100) * mpp; | |
218 | } | |
219 | ||
220 | static gchar * | |
221 | _get_uri( VikMapSourceDefault *self, MapCoord *src ) | |
222 | { | |
223 | g_return_val_if_fail (TERRASERVER_IS_MAP_SOURCE(self), NULL); | |
224 | ||
225 | TerraserverMapSourcePrivate *priv = TERRASERVER_MAP_SOURCE_PRIVATE(self); | |
226 | int type = priv->type; | |
227 | gchar *uri = g_strdup_printf ( "/tile.ashx?T=%d&S=%d&X=%d&Y=%d&Z=%d", type, | |
228 | src->scale, src->x, src->y, src->z ); | |
229 | return uri; | |
230 | } | |
231 | ||
232 | static gchar * | |
233 | _get_hostname( VikMapSourceDefault *self ) | |
234 | { | |
235 | g_return_val_if_fail (TERRASERVER_IS_MAP_SOURCE(self), NULL); | |
236 | ||
237 | return g_strdup( TERRASERVER_SITE ); | |
238 | } | |
239 | ||
240 | static DownloadMapOptions * | |
241 | _get_download_options( VikMapSourceDefault *self ) | |
242 | { | |
243 | g_return_val_if_fail (TERRASERVER_IS_MAP_SOURCE(self), NULL); | |
244 | ||
245 | return &terraserver_options; | |
246 | } | |
247 | ||
248 | TerraserverMapSource * | |
249 | terraserver_map_source_new_with_id (guint8 id, const char *label, int type) | |
250 | { | |
251 | char *copyright = NULL; | |
252 | switch (type) | |
253 | { | |
254 | case 1: | |
255 | copyright = "© DigitalGlobe"; | |
256 | break; | |
257 | case 2: | |
258 | copyright = "© LandVoyage"; | |
259 | break; | |
260 | case 4: | |
261 | copyright = "© DigitalGlobe"; | |
262 | break; | |
263 | default: | |
264 | g_critical("Houston, we've had a problem. type=%d", type); | |
265 | } | |
266 | ||
267 | return g_object_new(TERRASERVER_TYPE_MAP_SOURCE, | |
268 | "id", id, "label", label, "type", type, | |
269 | "copyright", copyright, | |
270 | NULL); | |
271 | } |