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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 | #ifdef HAVE_CONFIG_H | |
22 | #include "config.h" | |
23 | #endif | |
24 | #include <math.h> | |
25 | #include <sys/types.h> | |
26 | #include <sys/stat.h> | |
27 | #include <string.h> | |
28 | #include <stdlib.h> | |
29 | #include <glib/gi18n.h> | |
30 | ||
31 | #include "config.h" | |
32 | #include "globals.h" | |
33 | #include "coords.h" | |
34 | #include "vikcoord.h" | |
35 | #include "download.h" | |
36 | #include "background.h" | |
37 | #include "vikwaypoint.h" | |
38 | #include "viktrack.h" | |
39 | #include "vikviewport.h" | |
40 | #include "viktreeview.h" | |
41 | #include "viklayer.h" | |
42 | #include "vikaggregatelayer.h" | |
43 | #include "viklayerspanel.h" | |
44 | #include "vikdemlayer.h" | |
45 | #include "dialog.h" | |
46 | ||
47 | #include "dem.h" | |
48 | #include "dems.h" | |
49 | ||
50 | #include "icons/icons.h" | |
51 | ||
52 | #define MAPS_CACHE_DIR maps_layer_default_dir() | |
53 | ||
54 | #define SRTM_CACHE_TEMPLATE "%ssrtm3-%s%s%c%02d%c%03d.hgt.zip" | |
55 | #define SRTM_FTP_SITE "e0srp01u.ecs.nasa.gov" | |
56 | #define SRTM_FTP_URI "/srtm/version2/SRTM3/" | |
57 | ||
58 | #ifdef VIK_CONFIG_DEM24K | |
59 | #define DEM24K_DOWNLOAD_SCRIPT "dem24k.pl" | |
60 | #endif | |
61 | ||
62 | ||
63 | static void dem_layer_marshall( VikDEMLayer *vdl, guint8 **data, gint *len ); | |
64 | static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp ); | |
65 | static gboolean dem_layer_set_param ( VikDEMLayer *vdl, guint16 id, VikLayerParamData data, VikViewport *vp ); | |
66 | static VikLayerParamData dem_layer_get_param ( VikDEMLayer *vdl, guint16 id ); | |
67 | static void dem_layer_update_gc ( VikDEMLayer *vdl, VikViewport *vp, const gchar *color ); | |
68 | static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file ); | |
69 | static void srtm_draw_existence ( VikViewport *vp ); | |
70 | ||
71 | #ifdef VIK_CONFIG_DEM24K | |
72 | static void dem24k_draw_existence ( VikViewport *vp ); | |
73 | #endif | |
74 | ||
75 | static VikLayerParamScale param_scales[] = { | |
76 | { 1, 10000, 10, 1 }, | |
77 | { 1, 10000, 10, 1 }, | |
78 | { 1, 10, 1, 0 }, | |
79 | }; | |
80 | ||
81 | static gchar *params_source[] = { | |
82 | "SRTM Global 90m (3 arcsec)", | |
83 | #ifdef VIK_CONFIG_DEM24K | |
84 | "USA 10m (USGS 24k)", | |
85 | #endif | |
86 | "None", | |
87 | NULL | |
88 | }; | |
89 | ||
90 | enum { DEM_SOURCE_SRTM, | |
91 | #ifdef VIK_CONFIG_DEM24K | |
92 | DEM_SOURCE_DEM24K, | |
93 | #endif | |
94 | DEM_SOURCE_NONE, | |
95 | }; | |
96 | ||
97 | static VikLayerParam dem_layer_params[] = { | |
98 | { "files", VIK_LAYER_PARAM_STRING_LIST, VIK_LAYER_GROUP_NONE, N_("DEM Files:"), VIK_LAYER_WIDGET_FILELIST }, | |
99 | { "source", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Download Source:"), VIK_LAYER_WIDGET_RADIOGROUP_STATIC, params_source, NULL }, | |
100 | { "color", VIK_LAYER_PARAM_STRING, VIK_LAYER_GROUP_NONE, N_("Color:"), VIK_LAYER_WIDGET_ENTRY }, | |
101 | { "min_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Min Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 }, | |
102 | { "max_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Max Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 }, | |
103 | { "line_thickness", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Line Thickness:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 1 }, | |
104 | }; | |
105 | ||
106 | ||
107 | enum { PARAM_FILES=0, PARAM_SOURCE, PARAM_COLOR, PARAM_MIN_ELEV, PARAM_MAX_ELEV, PARAM_LINE_THICKNESS, NUM_PARAMS }; | |
108 | ||
109 | static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp); | |
110 | static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ); | |
111 | static gboolean dem_layer_download_click ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ); | |
112 | ||
113 | static VikToolInterface dem_tools[] = { | |
114 | { N_("DEM Download/Import"), (VikToolConstructorFunc) dem_layer_download_create, NULL, NULL, NULL, | |
115 | (VikToolMouseFunc) dem_layer_download_click, NULL, (VikToolMouseFunc) dem_layer_download_release, | |
116 | (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_demdl_pixbuf }, | |
117 | }; | |
118 | ||
119 | ||
120 | /* | |
121 | */ | |
122 | ||
123 | static gchar *dem_colors[] = { | |
124 | "#0000FF", | |
125 | "#9b793c", | |
126 | "#9c7d40", | |
127 | "#9d8144", | |
128 | "#9e8549", | |
129 | "#9f894d", | |
130 | "#a08d51", | |
131 | "#a29156", | |
132 | "#a3955a", | |
133 | "#a4995e", | |
134 | "#a69d63", | |
135 | "#a89f65", | |
136 | "#aaa267", | |
137 | "#ada569", | |
138 | "#afa76b", | |
139 | "#b1aa6d", | |
140 | "#b4ad6f", | |
141 | "#b6b071", | |
142 | "#b9b373", | |
143 | "#bcb676", | |
144 | "#beb978", | |
145 | "#c0bc7a", | |
146 | "#c2c07d", | |
147 | "#c4c37f", | |
148 | "#c6c681", | |
149 | "#c8ca84", | |
150 | "#cacd86", | |
151 | "#ccd188", | |
152 | "#cfd58b", | |
153 | "#c2ce84", | |
154 | "#b5c87e", | |
155 | "#a9c278", | |
156 | "#9cbb71", | |
157 | "#8fb56b", | |
158 | "#83af65", | |
159 | "#76a95e", | |
160 | "#6aa358", | |
161 | "#5e9d52", | |
162 | "#63a055", | |
163 | "#69a458", | |
164 | "#6fa85c", | |
165 | "#74ac5f", | |
166 | "#7ab063", | |
167 | "#80b467", | |
168 | "#86b86a", | |
169 | "#8cbc6e", | |
170 | "#92c072", | |
171 | "#94c175", | |
172 | "#97c278", | |
173 | "#9ac47c", | |
174 | "#9cc57f", | |
175 | "#9fc682", | |
176 | "#a2c886", | |
177 | "#a4c989", | |
178 | "#a7cb8d", | |
179 | "#aacd91", | |
180 | "#afce99", | |
181 | "#b5d0a1", | |
182 | "#bbd2aa", | |
183 | "#c0d3b2", | |
184 | "#c6d5ba", | |
185 | "#ccd7c3", | |
186 | "#d1d9cb", | |
187 | "#d7dbd4", | |
188 | "#DDDDDD", | |
189 | "#e0e0e0", | |
190 | "#e4e4e4", | |
191 | "#e8e8e8", | |
192 | "#ebebeb", | |
193 | "#efefef", | |
194 | "#f3f3f3", | |
195 | "#f7f7f7", | |
196 | "#fbfbfb", | |
197 | "#ffffff" | |
198 | }; | |
199 | ||
200 | /* | |
201 | "#9b793c", | |
202 | "#9e8549", | |
203 | "#a29156", | |
204 | "#a69d63", | |
205 | "#ada569", | |
206 | "#b4ad6f", | |
207 | "#bcb676", | |
208 | "#c2c07d", | |
209 | "#c8ca84", | |
210 | "#cfd58b", | |
211 | "#a9c278", | |
212 | "#83af65", | |
213 | "#5e9d52", | |
214 | "#6fa85c", | |
215 | "#80b467", | |
216 | "#92c072", | |
217 | "#9ac47c", | |
218 | "#a2c886", | |
219 | "#aacd91", | |
220 | "#bbd2aa", | |
221 | "#ccd7c3", | |
222 | "#DDDDDD", | |
223 | "#e8e8e8", | |
224 | "#f3f3f3", | |
225 | "#FFFFFF" | |
226 | }; | |
227 | */ | |
228 | ||
229 | static const guint DEM_N_COLORS = sizeof(dem_colors)/sizeof(dem_colors[0]); | |
230 | ||
231 | ||
232 | VikLayerInterface vik_dem_layer_interface = { | |
233 | "DEM", | |
234 | &vikdemlayer_pixbuf, | |
235 | ||
236 | dem_tools, | |
237 | sizeof(dem_tools) / sizeof(dem_tools[0]), | |
238 | ||
239 | dem_layer_params, | |
240 | NUM_PARAMS, | |
241 | NULL, | |
242 | 0, | |
243 | ||
244 | VIK_MENU_ITEM_ALL, | |
245 | ||
246 | (VikLayerFuncCreate) vik_dem_layer_create, | |
247 | (VikLayerFuncRealize) NULL, | |
248 | dem_layer_post_read, | |
249 | (VikLayerFuncFree) vik_dem_layer_free, | |
250 | ||
251 | (VikLayerFuncProperties) NULL, | |
252 | (VikLayerFuncDraw) vik_dem_layer_draw, | |
253 | (VikLayerFuncChangeCoordMode) NULL, | |
254 | ||
255 | (VikLayerFuncSetMenuItemsSelection) NULL, | |
256 | (VikLayerFuncGetMenuItemsSelection) NULL, | |
257 | ||
258 | (VikLayerFuncAddMenuItems) NULL, | |
259 | (VikLayerFuncSublayerAddMenuItems) NULL, | |
260 | ||
261 | (VikLayerFuncSublayerRenameRequest) NULL, | |
262 | (VikLayerFuncSublayerToggleVisible) NULL, | |
263 | ||
264 | (VikLayerFuncMarshall) dem_layer_marshall, | |
265 | (VikLayerFuncUnmarshall) dem_layer_unmarshall, | |
266 | ||
267 | (VikLayerFuncSetParam) dem_layer_set_param, | |
268 | (VikLayerFuncGetParam) dem_layer_get_param, | |
269 | ||
270 | (VikLayerFuncReadFileData) NULL, | |
271 | (VikLayerFuncWriteFileData) NULL, | |
272 | ||
273 | (VikLayerFuncDeleteItem) NULL, | |
274 | (VikLayerFuncCopyItem) NULL, | |
275 | (VikLayerFuncPasteItem) NULL, | |
276 | (VikLayerFuncFreeCopiedItem) NULL, | |
277 | (VikLayerFuncDragDropRequest) NULL, | |
278 | }; | |
279 | ||
280 | struct _VikDEMLayer { | |
281 | VikLayer vl; | |
282 | GdkGC *gc; | |
283 | GdkGC **gcs; | |
284 | GList *files; | |
285 | gdouble min_elev; | |
286 | gdouble max_elev; | |
287 | guint8 line_thickness; | |
288 | gchar *color; | |
289 | guint source; | |
290 | }; | |
291 | ||
292 | GType vik_dem_layer_get_type () | |
293 | { | |
294 | static GType vdl_type = 0; | |
295 | ||
296 | if (!vdl_type) | |
297 | { | |
298 | static const GTypeInfo vdl_info = | |
299 | { | |
300 | sizeof (VikDEMLayerClass), | |
301 | NULL, /* base_init */ | |
302 | NULL, /* base_finalize */ | |
303 | NULL, /* class init */ | |
304 | NULL, /* class_finalize */ | |
305 | NULL, /* class_data */ | |
306 | sizeof (VikDEMLayer), | |
307 | 0, | |
308 | NULL /* instance init */ | |
309 | }; | |
310 | vdl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikDEMLayer", &vdl_info, 0 ); | |
311 | } | |
312 | ||
313 | return vdl_type; | |
314 | } | |
315 | ||
316 | static void dem_layer_marshall( VikDEMLayer *vdl, guint8 **data, gint *len ) | |
317 | { | |
318 | vik_layer_marshall_params ( VIK_LAYER(vdl), data, len ); | |
319 | } | |
320 | ||
321 | static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp ) | |
322 | { | |
323 | VikDEMLayer *rv = vik_dem_layer_new (); | |
324 | gint i; | |
325 | ||
326 | /* TODO: share GCS between layers */ | |
327 | for ( i = 0; i < DEM_N_COLORS; i++ ) | |
328 | rv->gcs[i] = vik_viewport_new_gc ( vvp, dem_colors[i], rv->line_thickness ); | |
329 | ||
330 | vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp ); | |
331 | return rv; | |
332 | } | |
333 | ||
334 | gboolean dem_layer_set_param ( VikDEMLayer *vdl, guint16 id, VikLayerParamData data, VikViewport *vp ) | |
335 | { | |
336 | switch ( id ) | |
337 | { | |
338 | case PARAM_COLOR: if ( vdl->color ) g_free ( vdl->color ); vdl->color = g_strdup ( data.s ); break; | |
339 | case PARAM_SOURCE: vdl->source = data.u; break; | |
340 | case PARAM_MIN_ELEV: vdl->min_elev = data.d; break; | |
341 | case PARAM_MAX_ELEV: vdl->max_elev = data.d; break; | |
342 | case PARAM_LINE_THICKNESS: if ( data.u >= 1 && data.u <= 15 ) vdl->line_thickness = data.u; break; | |
343 | case PARAM_FILES: a_dems_load_list ( &(data.sl) ); a_dems_list_free ( vdl->files ); vdl->files = data.sl; break; | |
344 | } | |
345 | return TRUE; | |
346 | } | |
347 | ||
348 | static VikLayerParamData dem_layer_get_param ( VikDEMLayer *vdl, guint16 id ) | |
349 | { | |
350 | VikLayerParamData rv; | |
351 | switch ( id ) | |
352 | { | |
353 | case PARAM_FILES: rv.sl = vdl->files; break; | |
354 | case PARAM_SOURCE: rv.u = vdl->source; break; | |
355 | case PARAM_COLOR: rv.s = vdl->color ? vdl->color : ""; break; | |
356 | case PARAM_MIN_ELEV: rv.d = vdl->min_elev; break; | |
357 | case PARAM_MAX_ELEV: rv.d = vdl->max_elev; break; | |
358 | case PARAM_LINE_THICKNESS: rv.i = vdl->line_thickness; break; | |
359 | } | |
360 | return rv; | |
361 | } | |
362 | ||
363 | static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file ) | |
364 | { | |
365 | VikDEMLayer *vdl = VIK_DEM_LAYER(vl); | |
366 | if ( vdl->gc ) | |
367 | g_object_unref ( G_OBJECT(vdl->gc) ); | |
368 | ||
369 | vdl->gc = vik_viewport_new_gc ( vp, vdl->color, vdl->line_thickness ); | |
370 | } | |
371 | ||
372 | VikDEMLayer *vik_dem_layer_new ( ) | |
373 | { | |
374 | VikDEMLayer *vdl = VIK_DEM_LAYER ( g_object_new ( VIK_DEM_LAYER_TYPE, NULL ) ); | |
375 | ||
376 | vik_layer_init ( VIK_LAYER(vdl), VIK_LAYER_DEM ); | |
377 | ||
378 | vdl->files = NULL; | |
379 | ||
380 | ||
381 | vdl->gc = NULL; | |
382 | ||
383 | vdl->gcs = g_malloc(sizeof(GdkGC *)*DEM_N_COLORS); | |
384 | /* make new gcs only if we need it (copy layer -> use old) */ | |
385 | ||
386 | vdl->min_elev = 0.0; | |
387 | vdl->max_elev = 1000.0; | |
388 | vdl->source = DEM_SOURCE_SRTM; | |
389 | vdl->line_thickness = 3; | |
390 | vdl->color = NULL; | |
391 | return vdl; | |
392 | } | |
393 | ||
394 | ||
395 | ||
396 | static void vik_dem_layer_draw_dem ( VikDEMLayer *vdl, VikViewport *vp, VikDEM *dem ) | |
397 | { | |
398 | VikDEMColumn *column; | |
399 | ||
400 | struct LatLon dem_northeast, dem_southwest; | |
401 | gdouble max_lat, max_lon, min_lat, min_lon; | |
402 | ||
403 | /**** Check if viewport and DEM data overlap ****/ | |
404 | ||
405 | /* get min, max lat/lon of viewport */ | |
406 | vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon ); | |
407 | ||
408 | /* get min, max lat/lon of DEM data */ | |
409 | if ( dem->horiz_units == VIK_DEM_HORIZ_LL_ARCSECONDS ) { | |
410 | dem_northeast.lat = dem->max_north / 3600.0; | |
411 | dem_northeast.lon = dem->max_east / 3600.0; | |
412 | dem_southwest.lat = dem->min_north / 3600.0; | |
413 | dem_southwest.lon = dem->min_east / 3600.0; | |
414 | } else if ( dem->horiz_units == VIK_DEM_HORIZ_UTM_METERS ) { | |
415 | struct UTM dem_northeast_utm, dem_southwest_utm; | |
416 | dem_northeast_utm.northing = dem->max_north; | |
417 | dem_northeast_utm.easting = dem->max_east; | |
418 | dem_southwest_utm.northing = dem->min_north; | |
419 | dem_southwest_utm.easting = dem->min_east; | |
420 | dem_northeast_utm.zone = dem_southwest_utm.zone = dem->utm_zone; | |
421 | dem_northeast_utm.letter = dem_southwest_utm.letter = dem->utm_letter; | |
422 | ||
423 | a_coords_utm_to_latlon(&dem_northeast_utm, &dem_northeast); | |
424 | a_coords_utm_to_latlon(&dem_southwest_utm, &dem_southwest); | |
425 | } | |
426 | ||
427 | if ( (max_lat > dem_northeast.lat && min_lat > dem_northeast.lat) || | |
428 | (max_lat < dem_southwest.lat && min_lat < dem_southwest.lat) ) | |
429 | return; | |
430 | else if ( (max_lon > dem_northeast.lon && min_lon > dem_northeast.lon) || | |
431 | (max_lon < dem_southwest.lon && min_lon < dem_southwest.lon) ) | |
432 | return; | |
433 | /* else they overlap */ | |
434 | ||
435 | /**** End Overlap Check ****/ | |
436 | /* boxes to show where we have DEM instead of actually drawing the DEM. | |
437 | * useful if we want to see what areas we have coverage for (if we want | |
438 | * to get elevation data for a track) but don't want to cover the map. | |
439 | */ | |
440 | ||
441 | #if 0 | |
442 | /* draw a box if a DEM is loaded. in future I'd like to add an option for this | |
443 | * this is useful if we want to see what areas we have dem for but don't want to | |
444 | * cover the map (or maybe we just need translucent DEM?) */ | |
445 | { | |
446 | VikCoord demne, demsw; | |
447 | gint x1, y1, x2, y2; | |
448 | vik_coord_load_from_latlon(&demne, vik_viewport_get_coord_mode(vp), &dem_northeast); | |
449 | vik_coord_load_from_latlon(&demsw, vik_viewport_get_coord_mode(vp), &dem_southwest); | |
450 | ||
451 | vik_viewport_coord_to_screen ( vp, &demne, &x1, &y1 ); | |
452 | vik_viewport_coord_to_screen ( vp, &demsw, &x2, &y2 ); | |
453 | ||
454 | if ( x1 > vik_viewport_get_width(vp) ) x1=vik_viewport_get_width(vp); | |
455 | if ( y2 > vik_viewport_get_height(vp) ) y2=vik_viewport_get_height(vp); | |
456 | if ( x2 < 0 ) x2 = 0; | |
457 | if ( y1 < 0 ) y1 = 0; | |
458 | vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc, | |
459 | FALSE, x2, y1, x1-x2, y2-y1 ); | |
460 | return; | |
461 | } | |
462 | #endif | |
463 | ||
464 | if ( dem->horiz_units == VIK_DEM_HORIZ_LL_ARCSECONDS ) { | |
465 | VikCoord tmp; /* TODO: don't use coord_load_from_latlon, especially if in latlon drawing mode */ | |
466 | ||
467 | gdouble max_lat_as, max_lon_as, min_lat_as, min_lon_as; | |
468 | gdouble start_lat_as, end_lat_as, start_lon_as, end_lon_as; | |
469 | ||
470 | gdouble start_lat, end_lat, start_lon, end_lon; | |
471 | ||
472 | struct LatLon counter; | |
473 | ||
474 | guint x, y, start_x, start_y; | |
475 | ||
476 | gint16 elev; | |
477 | ||
478 | guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 40 ); /* todo: smarter calculation. */ | |
479 | ||
480 | gdouble nscale_deg = dem->north_scale / ((gdouble) 3600); | |
481 | gdouble escale_deg = dem->east_scale / ((gdouble) 3600); | |
482 | ||
483 | max_lat_as = max_lat * 3600; | |
484 | min_lat_as = min_lat * 3600; | |
485 | max_lon_as = max_lon * 3600; | |
486 | min_lon_as = min_lon * 3600; | |
487 | ||
488 | start_lat_as = MAX(min_lat_as, dem->min_north); | |
489 | end_lat_as = MIN(max_lat_as, dem->max_north); | |
490 | start_lon_as = MAX(min_lon_as, dem->min_east); | |
491 | end_lon_as = MIN(max_lon_as, dem->max_east); | |
492 | ||
493 | start_lat = floor(start_lat_as / dem->north_scale) * nscale_deg; | |
494 | end_lat = ceil (end_lat_as / dem->north_scale) * nscale_deg; | |
495 | start_lon = floor(start_lon_as / dem->east_scale) * escale_deg; | |
496 | end_lon = ceil (end_lon_as / dem->east_scale) * escale_deg; | |
497 | ||
498 | vik_dem_east_north_to_xy ( dem, start_lon_as, start_lat_as, &start_x, &start_y ); | |
499 | ||
500 | /* verify sane elev interval */ | |
501 | if ( vdl->max_elev <= vdl->min_elev ) | |
502 | vdl->max_elev = vdl->min_elev + 1; | |
503 | ||
504 | for ( x=start_x, counter.lon = start_lon; counter.lon <= end_lon; counter.lon += escale_deg * skip_factor, x += skip_factor ) { | |
505 | if ( x > 0 && x < dem->n_columns ) { | |
506 | column = g_ptr_array_index ( dem->columns, x ); | |
507 | for ( y=start_y, counter.lat = start_lat; counter.lat <= end_lat; counter.lat += nscale_deg * skip_factor, y += skip_factor ) { | |
508 | if ( y > column->n_points ) | |
509 | break; | |
510 | elev = column->points[y]; | |
511 | ||
512 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev ) | |
513 | elev=vdl->min_elev; | |
514 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev ) | |
515 | elev=vdl->max_elev; | |
516 | ||
517 | ||
518 | { | |
519 | gint a, b; | |
520 | ||
521 | vik_coord_load_from_latlon(&tmp, vik_viewport_get_coord_mode(vp), &counter); | |
522 | vik_viewport_coord_to_screen(vp, &tmp, &a, &b); | |
523 | if ( elev == VIK_DEM_INVALID_ELEVATION ) | |
524 | ; /* don't draw it */ | |
525 | else if ( elev <= 0 ) | |
526 | vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, a-2, b-2, 4, 4 ); | |
527 | else | |
528 | vik_viewport_draw_rectangle(vp, vdl->gcs[(gint)floor((elev - vdl->min_elev)/(vdl->max_elev - vdl->min_elev)*(DEM_N_COLORS-2))+1], TRUE, a-2, b-2, 4, 4 ); | |
529 | } | |
530 | } /* for y= */ | |
531 | } | |
532 | } /* for x= */ | |
533 | } else if ( dem->horiz_units == VIK_DEM_HORIZ_UTM_METERS ) { | |
534 | gdouble max_nor, max_eas, min_nor, min_eas; | |
535 | gdouble start_nor, start_eas, end_nor, end_eas; | |
536 | ||
537 | gint16 elev; | |
538 | ||
539 | guint x, y, start_x, start_y; | |
540 | ||
541 | VikCoord tmp; /* TODO: don't use coord_load_from_latlon, especially if in latlon drawing mode */ | |
542 | struct UTM counter; | |
543 | ||
544 | guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 10 ); /* todo: smarter calculation. */ | |
545 | ||
546 | VikCoord tleft, tright, bleft, bright; | |
547 | ||
548 | vik_viewport_screen_to_coord ( vp, 0, 0, &tleft ); | |
549 | vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &tright ); | |
550 | vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &bleft ); | |
551 | vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &bright ); | |
552 | ||
553 | ||
554 | vik_coord_convert(&tleft, VIK_COORD_UTM); | |
555 | vik_coord_convert(&tright, VIK_COORD_UTM); | |
556 | vik_coord_convert(&bleft, VIK_COORD_UTM); | |
557 | vik_coord_convert(&bright, VIK_COORD_UTM); | |
558 | ||
559 | max_nor = MAX(tleft.north_south, tright.north_south); | |
560 | min_nor = MIN(bleft.north_south, bright.north_south); | |
561 | max_eas = MAX(bright.east_west, tright.east_west); | |
562 | min_eas = MIN(bleft.east_west, tleft.east_west); | |
563 | ||
564 | start_nor = MAX(min_nor, dem->min_north); | |
565 | end_nor = MIN(max_nor, dem->max_north); | |
566 | if ( tleft.utm_zone == dem->utm_zone && bleft.utm_zone == dem->utm_zone | |
567 | && (tleft.utm_letter >= 'N') == (dem->utm_letter >= 'N') | |
568 | && (bleft.utm_letter >= 'N') == (dem->utm_letter >= 'N') ) /* if the utm zones/hemispheres are different, min_eas will be bogus */ | |
569 | start_eas = MAX(min_eas, dem->min_east); | |
570 | else | |
571 | start_eas = dem->min_east; | |
572 | if ( tright.utm_zone == dem->utm_zone && bright.utm_zone == dem->utm_zone | |
573 | && (tright.utm_letter >= 'N') == (dem->utm_letter >= 'N') | |
574 | && (bright.utm_letter >= 'N') == (dem->utm_letter >= 'N') ) /* if the utm zones/hemispheres are different, min_eas will be bogus */ | |
575 | end_eas = MIN(max_eas, dem->max_east); | |
576 | else | |
577 | end_eas = dem->max_east; | |
578 | ||
579 | start_nor = floor(start_nor / dem->north_scale) * dem->north_scale; | |
580 | end_nor = ceil (end_nor / dem->north_scale) * dem->north_scale; | |
581 | start_eas = floor(start_eas / dem->east_scale) * dem->east_scale; | |
582 | end_eas = ceil (end_eas / dem->east_scale) * dem->east_scale; | |
583 | ||
584 | vik_dem_east_north_to_xy ( dem, start_eas, start_nor, &start_x, &start_y ); | |
585 | ||
586 | /* TODO: why start_x and start_y are -1 -- rounding error from above? */ | |
587 | ||
588 | counter.zone = dem->utm_zone; | |
589 | counter.letter = dem->utm_letter; | |
590 | ||
591 | for ( x=start_x, counter.easting = start_eas; counter.easting <= end_eas; counter.easting += dem->east_scale * skip_factor, x += skip_factor ) { | |
592 | if ( x > 0 && x < dem->n_columns ) { | |
593 | column = g_ptr_array_index ( dem->columns, x ); | |
594 | for ( y=start_y, counter.northing = start_nor; counter.northing <= end_nor; counter.northing += dem->north_scale * skip_factor, y += skip_factor ) { | |
595 | if ( y > column->n_points ) | |
596 | continue; | |
597 | elev = column->points[y]; | |
598 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev ) | |
599 | elev=vdl->min_elev; | |
600 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev ) | |
601 | elev=vdl->max_elev; | |
602 | ||
603 | { | |
604 | gint a, b; | |
605 | vik_coord_load_from_utm(&tmp, vik_viewport_get_coord_mode(vp), &counter); | |
606 | vik_viewport_coord_to_screen(vp, &tmp, &a, &b); | |
607 | if ( elev == VIK_DEM_INVALID_ELEVATION ) | |
608 | ; /* don't draw it */ | |
609 | else if ( elev <= 0 ) | |
610 | vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, a-2, b-2, 4, 4 ); | |
611 | else | |
612 | vik_viewport_draw_rectangle(vp, vdl->gcs[(gint)floor((elev - vdl->min_elev)/(vdl->max_elev - vdl->min_elev)*(DEM_N_COLORS-2))+1], TRUE, a-2, b-2, 4, 4 ); | |
613 | } | |
614 | } /* for y= */ | |
615 | } | |
616 | } /* for x= */ | |
617 | } | |
618 | } | |
619 | ||
620 | /* return the continent for the specified lat, lon */ | |
621 | /* TODO */ | |
622 | static const gchar *srtm_continent_dir ( gint lat, gint lon ) | |
623 | { | |
624 | extern const char *_srtm_continent_data[]; | |
625 | static GHashTable *srtm_continent = NULL; | |
626 | const gchar *continent; | |
627 | gchar name[16]; | |
628 | ||
629 | if (!srtm_continent) { | |
630 | const gchar **s; | |
631 | ||
632 | srtm_continent = g_hash_table_new(g_str_hash, g_str_equal); | |
633 | s = _srtm_continent_data; | |
634 | while (*s != (gchar *)-1) { | |
635 | continent = *s++; | |
636 | while (*s) { | |
637 | g_hash_table_insert(srtm_continent, (gpointer) *s, (gpointer) continent); | |
638 | s++; | |
639 | } | |
640 | s++; | |
641 | } | |
642 | } | |
643 | g_snprintf(name, sizeof(name), "%c%02d%c%03d", | |
644 | (lat >= 0) ? 'N' : 'S', ABS(lat), | |
645 | (lon >= 0) ? 'E' : 'W', ABS(lon)); | |
646 | ||
647 | return(g_hash_table_lookup(srtm_continent, name)); | |
648 | } | |
649 | ||
650 | void vik_dem_layer_draw ( VikDEMLayer *vdl, gpointer data ) | |
651 | { | |
652 | VikViewport *vp = (VikViewport *) data; | |
653 | GList *dems_iter = vdl->files; | |
654 | VikDEM *dem; | |
655 | ||
656 | ||
657 | /* search for SRTM3 90m */ | |
658 | ||
659 | if ( vdl->source == DEM_SOURCE_SRTM ) | |
660 | srtm_draw_existence ( vp ); | |
661 | #ifdef VIK_CONFIG_DEM24K | |
662 | else if ( vdl->source == DEM_SOURCE_DEM24K ) | |
663 | dem24k_draw_existence ( vp ); | |
664 | #endif | |
665 | ||
666 | while ( dems_iter ) { | |
667 | dem = a_dems_get ( (const char *) (dems_iter->data) ); | |
668 | if ( dem ) | |
669 | vik_dem_layer_draw_dem ( vdl, vp, dem ); | |
670 | dems_iter = dems_iter->next; | |
671 | } | |
672 | } | |
673 | ||
674 | void vik_dem_layer_free ( VikDEMLayer *vdl ) | |
675 | { | |
676 | gint i; | |
677 | if ( vdl->gc != NULL ) | |
678 | g_object_unref ( G_OBJECT(vdl->gc) ); | |
679 | ||
680 | if ( vdl->color != NULL ) | |
681 | g_free ( vdl->color ); | |
682 | ||
683 | if ( vdl->gcs ) | |
684 | for ( i = 0; i < DEM_N_COLORS; i++ ) | |
685 | g_object_unref ( vdl->gcs[i] ); | |
686 | g_free ( vdl->gcs ); | |
687 | ||
688 | a_dems_list_free ( vdl->files ); | |
689 | } | |
690 | ||
691 | static void dem_layer_update_gc ( VikDEMLayer *vdl, VikViewport *vp, const gchar *color ) | |
692 | { | |
693 | if ( vdl->color ) | |
694 | g_free ( vdl->color ); | |
695 | ||
696 | vdl->color = g_strdup ( color ); | |
697 | ||
698 | if ( vdl->gc ) | |
699 | g_object_unref ( G_OBJECT(vdl->gc) ); | |
700 | ||
701 | vdl->gc = vik_viewport_new_gc ( vp, vdl->color, vdl->line_thickness ); | |
702 | } | |
703 | ||
704 | VikDEMLayer *vik_dem_layer_create ( VikViewport *vp ) | |
705 | { | |
706 | VikDEMLayer *vdl = vik_dem_layer_new (); | |
707 | gint i; | |
708 | ||
709 | /* TODO: share GCS between layers */ | |
710 | for ( i = 0; i < DEM_N_COLORS; i++ ) | |
711 | vdl->gcs[i] = vik_viewport_new_gc ( vp, dem_colors[i], vdl->line_thickness ); | |
712 | ||
713 | dem_layer_update_gc ( vdl, vp, "red" ); | |
714 | return vdl; | |
715 | } | |
716 | /************************************************************** | |
717 | **** SOURCES & DOWNLOADING | |
718 | **************************************************************/ | |
719 | typedef struct { | |
720 | gchar *dest; | |
721 | gdouble lat, lon; | |
722 | ||
723 | GMutex *mutex; | |
724 | VikDEMLayer *vdl; /* NULL if not alive */ | |
725 | ||
726 | guint source; | |
727 | } DEMDownloadParams; | |
728 | ||
729 | ||
730 | /************************************************** | |
731 | * SOURCE: SRTM * | |
732 | **************************************************/ | |
733 | ||
734 | static void srtm_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata ) | |
735 | { | |
736 | gint intlat, intlon; | |
737 | const gchar *continent_dir; | |
738 | ||
739 | intlat = (int)floor(p->lat); | |
740 | intlon = (int)floor(p->lon); | |
741 | continent_dir = srtm_continent_dir(intlat, intlon); | |
742 | ||
743 | if (!continent_dir) { | |
744 | g_warning(N_("No SRTM data available for %f, %f"), p->lat, p->lon); | |
745 | return; | |
746 | } | |
747 | ||
748 | gchar *src_fn = g_strdup_printf("%s%s%s%c%02d%c%03d.hgt.zip", | |
749 | SRTM_FTP_URI, | |
750 | continent_dir, | |
751 | G_DIR_SEPARATOR_S, | |
752 | (intlat >= 0) ? 'N' : 'S', | |
753 | ABS(intlat), | |
754 | (intlon >= 0) ? 'E' : 'W', | |
755 | ABS(intlon) ); | |
756 | ||
757 | static DownloadOptions options = { NULL, 0, a_check_map_file }; | |
758 | a_ftp_download_get_url ( SRTM_FTP_SITE, src_fn, p->dest, &options ); | |
759 | g_free ( src_fn ); | |
760 | } | |
761 | ||
762 | static gchar *srtm_lat_lon_to_dest_fn ( gdouble lat, gdouble lon ) | |
763 | { | |
764 | gint intlat, intlon; | |
765 | const gchar *continent_dir; | |
766 | ||
767 | intlat = (int)floor(lat); | |
768 | intlon = (int)floor(lon); | |
769 | continent_dir = srtm_continent_dir(intlat, intlon); | |
770 | ||
771 | if (!continent_dir) | |
772 | continent_dir = "nowhere"; | |
773 | ||
774 | return g_strdup_printf("srtm3-%s%s%c%02d%c%03d.hgt.zip", | |
775 | continent_dir, | |
776 | G_DIR_SEPARATOR_S, | |
777 | (intlat >= 0) ? 'N' : 'S', | |
778 | ABS(intlat), | |
779 | (intlon >= 0) ? 'E' : 'W', | |
780 | ABS(intlon) ); | |
781 | ||
782 | } | |
783 | ||
784 | /* TODO: generalize */ | |
785 | static void srtm_draw_existence ( VikViewport *vp ) | |
786 | { | |
787 | gdouble max_lat, max_lon, min_lat, min_lon; | |
788 | gchar buf[strlen(MAPS_CACHE_DIR)+strlen(SRTM_CACHE_TEMPLATE)+30]; | |
789 | gint i, j; | |
790 | ||
791 | vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon ); | |
792 | ||
793 | for (i = floor(min_lat); i <= floor(max_lat); i++) { | |
794 | for (j = floor(min_lon); j <= floor(max_lon); j++) { | |
795 | const gchar *continent_dir; | |
796 | if ((continent_dir = srtm_continent_dir(i, j)) == NULL) | |
797 | continue; | |
798 | g_snprintf(buf, sizeof(buf), SRTM_CACHE_TEMPLATE, | |
799 | MAPS_CACHE_DIR, | |
800 | continent_dir, | |
801 | G_DIR_SEPARATOR_S, | |
802 | (i >= 0) ? 'N' : 'S', | |
803 | ABS(i), | |
804 | (j >= 0) ? 'E' : 'W', | |
805 | ABS(j) ); | |
806 | if ( g_file_test(buf, G_FILE_TEST_EXISTS ) == TRUE ) { | |
807 | VikCoord ne, sw; | |
808 | gint x1, y1, x2, y2; | |
809 | sw.north_south = i; | |
810 | sw.east_west = j; | |
811 | sw.mode = VIK_COORD_LATLON; | |
812 | ne.north_south = i+1; | |
813 | ne.east_west = j+1; | |
814 | ne.mode = VIK_COORD_LATLON; | |
815 | vik_viewport_coord_to_screen ( vp, &sw, &x1, &y1 ); | |
816 | vik_viewport_coord_to_screen ( vp, &ne, &x2, &y2 ); | |
817 | if ( x1 < 0 ) x1 = 0; | |
818 | if ( y2 < 0 ) y2 = 0; | |
819 | vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc, | |
820 | FALSE, x1, y2, x2-x1, y1-y2 ); | |
821 | } | |
822 | } | |
823 | } | |
824 | } | |
825 | ||
826 | ||
827 | /************************************************** | |
828 | * SOURCE: USGS 24K * | |
829 | **************************************************/ | |
830 | ||
831 | #ifdef VIK_CONFIG_DEM24K | |
832 | ||
833 | static void dem24k_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata ) | |
834 | { | |
835 | /* TODO: dest dir */ | |
836 | gchar *cmdline = g_strdup_printf("%s %.03f %.03f", | |
837 | DEM24K_DOWNLOAD_SCRIPT, | |
838 | floor(p->lat*8)/8, | |
839 | ceil(p->lon*8)/8 ); | |
840 | /* FIX: don't use system, use execv or something. check for existence */ | |
841 | system(cmdline); | |
842 | } | |
843 | ||
844 | static gchar *dem24k_lat_lon_to_dest_fn ( gdouble lat, gdouble lon ) | |
845 | { | |
846 | return g_strdup_printf("dem24k/%d/%d/%.03f,%.03f.dem", | |
847 | (gint) lat, | |
848 | (gint) lon, | |
849 | floor(lat*8)/8, | |
850 | ceil(lon*8)/8); | |
851 | } | |
852 | ||
853 | /* TODO: generalize */ | |
854 | static void dem24k_draw_existence ( VikViewport *vp ) | |
855 | { | |
856 | gdouble max_lat, max_lon, min_lat, min_lon; | |
857 | gchar buf[strlen(MAPS_CACHE_DIR)+40]; | |
858 | gdouble i, j; | |
859 | ||
860 | vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon ); | |
861 | ||
862 | for (i = floor(min_lat*8)/8; i <= floor(max_lat*8)/8; i+=0.125) { | |
863 | /* check lat dir first -- faster */ | |
864 | g_snprintf(buf, sizeof(buf), "%sdem24k/%d/", | |
865 | MAPS_CACHE_DIR, | |
866 | (gint) i ); | |
867 | if ( g_file_test(buf, G_FILE_TEST_EXISTS) == FALSE ) | |
868 | continue; | |
869 | for (j = floor(min_lon*8)/8; j <= floor(max_lon*8)/8; j+=0.125) { | |
870 | /* check lon dir first -- faster */ | |
871 | g_snprintf(buf, sizeof(buf), "%sdem24k/%d/%d/", | |
872 | MAPS_CACHE_DIR, | |
873 | (gint) i, | |
874 | (gint) j ); | |
875 | if ( g_file_test(buf, G_FILE_TEST_EXISTS) == FALSE ) | |
876 | continue; | |
877 | g_snprintf(buf, sizeof(buf), "%sdem24k/%d/%d/%.03f,%.03f.dem", | |
878 | MAPS_CACHE_DIR, | |
879 | (gint) i, | |
880 | (gint) j, | |
881 | floor(i*8)/8, | |
882 | floor(j*8)/8 ); | |
883 | if ( g_file_test(buf, G_FILE_TEST_EXISTS ) == TRUE ) { | |
884 | VikCoord ne, sw; | |
885 | gint x1, y1, x2, y2; | |
886 | sw.north_south = i; | |
887 | sw.east_west = j-0.125; | |
888 | sw.mode = VIK_COORD_LATLON; | |
889 | ne.north_south = i+0.125; | |
890 | ne.east_west = j; | |
891 | ne.mode = VIK_COORD_LATLON; | |
892 | vik_viewport_coord_to_screen ( vp, &sw, &x1, &y1 ); | |
893 | vik_viewport_coord_to_screen ( vp, &ne, &x2, &y2 ); | |
894 | if ( x1 < 0 ) x1 = 0; | |
895 | if ( y2 < 0 ) y2 = 0; | |
896 | vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc, | |
897 | FALSE, x1, y2, x2-x1, y1-y2 ); | |
898 | } | |
899 | } | |
900 | } | |
901 | } | |
902 | #endif | |
903 | ||
904 | /************************************************** | |
905 | * SOURCES -- DOWNLOADING & IMPORTING TOOL * | |
906 | ************************************************** | |
907 | */ | |
908 | ||
909 | static void weak_ref_cb ( gpointer ptr, GObject * dead_vdl ) | |
910 | { | |
911 | DEMDownloadParams *p = ptr; | |
912 | g_mutex_lock ( p->mutex ); | |
913 | p->vdl = NULL; | |
914 | g_mutex_unlock ( p->mutex ); | |
915 | } | |
916 | ||
917 | /* Try to add file full_path. | |
918 | * full_path will be copied. | |
919 | * returns FALSE if file does not exists, TRUE otherwise. | |
920 | */ | |
921 | static gboolean dem_layer_add_file ( VikDEMLayer *vdl, const gchar *full_path ) | |
922 | { | |
923 | if ( g_file_test(full_path, G_FILE_TEST_EXISTS ) == TRUE ) { | |
924 | /* only load if file size is not 0 (not in progress) */ | |
925 | struct stat sb; | |
926 | stat (full_path, &sb); | |
927 | if ( sb.st_size ) { | |
928 | gchar *duped_path = g_strdup(full_path); | |
929 | vdl->files = g_list_prepend ( vdl->files, duped_path ); | |
930 | a_dems_load ( duped_path ); | |
931 | g_debug("%s: %s", __FUNCTION__, duped_path); | |
932 | vik_layer_emit_update ( VIK_LAYER(vdl) ); | |
933 | } | |
934 | return TRUE; | |
935 | } else | |
936 | return FALSE; | |
937 | } | |
938 | ||
939 | static void dem_download_thread ( DEMDownloadParams *p, gpointer threaddata ) | |
940 | { | |
941 | if ( p->source == DEM_SOURCE_SRTM ) | |
942 | srtm_dem_download_thread ( p, threaddata ); | |
943 | #ifdef VIK_CONFIG_DEM24K | |
944 | else if ( p->source == DEM_SOURCE_DEM24K ) | |
945 | dem24k_dem_download_thread ( p, threaddata ); | |
946 | #endif | |
947 | ||
948 | gdk_threads_enter(); | |
949 | g_mutex_lock ( p->mutex ); | |
950 | if ( p->vdl ) { | |
951 | g_object_weak_unref ( G_OBJECT(p->vdl), weak_ref_cb, p ); | |
952 | ||
953 | if ( dem_layer_add_file ( p->vdl, p->dest ) ) | |
954 | vik_layer_emit_update ( VIK_LAYER(p->vdl) ); | |
955 | } | |
956 | g_mutex_unlock ( p->mutex ); | |
957 | gdk_threads_leave(); | |
958 | } | |
959 | ||
960 | ||
961 | static void free_dem_download_params ( DEMDownloadParams *p ) | |
962 | { | |
963 | g_mutex_free ( p->mutex ); | |
964 | g_free ( p->dest ); | |
965 | g_free ( p ); | |
966 | } | |
967 | ||
968 | static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp) | |
969 | { | |
970 | return vvp; | |
971 | } | |
972 | ||
973 | ||
974 | static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ) | |
975 | { | |
976 | VikCoord coord; | |
977 | struct LatLon ll; | |
978 | ||
979 | gchar *full_path; | |
980 | gchar *dem_file = NULL; | |
981 | ||
982 | if ( vdl->source == DEM_SOURCE_NONE ) | |
983 | a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_LAYER(vdl), _("No download source selected. Edit layer properties.") ); | |
984 | ||
985 | vik_viewport_screen_to_coord ( vvp, event->x, event->y, &coord ); | |
986 | vik_coord_to_latlon ( &coord, &ll ); | |
987 | ||
988 | ||
989 | if ( vdl->source == DEM_SOURCE_SRTM ) | |
990 | dem_file = srtm_lat_lon_to_dest_fn ( ll.lat, ll.lon ); | |
991 | #ifdef VIK_CONFIG_DEM24K | |
992 | else if ( vdl->source == DEM_SOURCE_DEM24K ) | |
993 | dem_file = dem24k_lat_lon_to_dest_fn ( ll.lat, ll.lon ); | |
994 | #endif | |
995 | ||
996 | if ( ! dem_file ) | |
997 | return TRUE; | |
998 | ||
999 | full_path = g_strdup_printf("%s%s", MAPS_CACHE_DIR, dem_file ); | |
1000 | ||
1001 | g_debug("%s: %s", __FUNCTION__, full_path); | |
1002 | ||
1003 | // TODO: check if already in filelist | |
1004 | ||
1005 | if ( ! dem_layer_add_file(vdl, full_path) ) { | |
1006 | gchar *tmp = g_strdup_printf ( _("Downloading DEM %s"), dem_file ); | |
1007 | DEMDownloadParams *p = g_malloc(sizeof(DEMDownloadParams)); | |
1008 | p->dest = g_strdup(full_path); | |
1009 | p->lat = ll.lat; | |
1010 | p->lon = ll.lon; | |
1011 | p->vdl = vdl; | |
1012 | p->mutex = g_mutex_new(); | |
1013 | p->source = vdl->source; | |
1014 | g_object_weak_ref(G_OBJECT(p->vdl), weak_ref_cb, p ); | |
1015 | ||
1016 | a_background_thread ( VIK_GTK_WINDOW_FROM_LAYER(vdl), tmp, | |
1017 | (vik_thr_func) dem_download_thread, p, | |
1018 | (vik_thr_free_func) free_dem_download_params, NULL, 1 ); | |
1019 | } | |
1020 | ||
1021 | g_free ( dem_file ); | |
1022 | g_free ( full_path ); | |
1023 | ||
1024 | return TRUE; | |
1025 | } | |
1026 | ||
1027 | static gboolean dem_layer_download_click ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ) | |
1028 | { | |
1029 | /* choose & keep track of cache dir | |
1030 | * download in background thread | |
1031 | * download over area */ | |
1032 | return TRUE; | |
1033 | } | |
1034 | ||
1035 |