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ad0a8c2d 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 | */ | |
4c77d5e0 GB |
21 | #ifdef HAVE_CONFIG_H |
22 | #include "config.h" | |
23 | #endif | |
8c00358d GB |
24 | |
25 | #ifdef HAVE_MATH_H | |
ad0a8c2d | 26 | #include <math.h> |
8c00358d GB |
27 | #endif |
28 | #ifdef HAVE_SYS_TYPES_H | |
0c1044e9 | 29 | #include <sys/types.h> |
8c00358d GB |
30 | #endif |
31 | #ifdef HAVE_SYS_STAT_H | |
0c1044e9 | 32 | #include <sys/stat.h> |
8c00358d GB |
33 | #endif |
34 | #ifdef HAVE_STRING_H | |
0c1044e9 | 35 | #include <string.h> |
8c00358d | 36 | #endif |
8c721f83 | 37 | #include <stdlib.h> |
4c77d5e0 | 38 | #include <glib/gi18n.h> |
ad0a8c2d | 39 | |
8c721f83 | 40 | #include "config.h" |
ad0a8c2d EB |
41 | #include "globals.h" |
42 | #include "coords.h" | |
43 | #include "vikcoord.h" | |
44 | #include "download.h" | |
0c1044e9 | 45 | #include "background.h" |
ad0a8c2d EB |
46 | #include "vikwaypoint.h" |
47 | #include "viktrack.h" | |
48 | #include "vikviewport.h" | |
49 | #include "viktreeview.h" | |
50 | #include "viklayer.h" | |
51 | #include "vikaggregatelayer.h" | |
52 | #include "viklayerspanel.h" | |
c96fce26 | 53 | #include "vikmapslayer.h" |
ad0a8c2d | 54 | #include "vikdemlayer.h" |
8c721f83 | 55 | #include "dialog.h" |
ad0a8c2d EB |
56 | |
57 | #include "dem.h" | |
58 | #include "dems.h" | |
59 | ||
bce3a7b0 EB |
60 | #include "icons/icons.h" |
61 | ||
8c721f83 | 62 | #define MAPS_CACHE_DIR maps_layer_default_dir() |
0c1044e9 | 63 | |
0e25c0d0 | 64 | #define SRTM_CACHE_TEMPLATE "%ssrtm3-%s%s%c%02d%c%03d.hgt.zip" |
e6c50657 | 65 | #define SRTM_HTTP_SITE "dds.cr.usgs.gov" |
f9518bc9 | 66 | #define SRTM_HTTP_URI "/srtm/version2_1/SRTM3/" |
8c721f83 EB |
67 | |
68 | #ifdef VIK_CONFIG_DEM24K | |
69 | #define DEM24K_DOWNLOAD_SCRIPT "dem24k.pl" | |
70 | #endif | |
71 | ||
0c1044e9 | 72 | |
ad0a8c2d EB |
73 | static void dem_layer_marshall( VikDEMLayer *vdl, guint8 **data, gint *len ); |
74 | static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp ); | |
75 | static gboolean dem_layer_set_param ( VikDEMLayer *vdl, guint16 id, VikLayerParamData data, VikViewport *vp ); | |
76 | static VikLayerParamData dem_layer_get_param ( VikDEMLayer *vdl, guint16 id ); | |
77 | static void dem_layer_update_gc ( VikDEMLayer *vdl, VikViewport *vp, const gchar *color ); | |
07059501 | 78 | static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file ); |
8c721f83 EB |
79 | static void srtm_draw_existence ( VikViewport *vp ); |
80 | ||
81 | #ifdef VIK_CONFIG_DEM24K | |
82 | static void dem24k_draw_existence ( VikViewport *vp ); | |
83 | #endif | |
ad0a8c2d EB |
84 | |
85 | static VikLayerParamScale param_scales[] = { | |
415302f4 | 86 | { 1, 10000, 10, 1 }, |
ad0a8c2d EB |
87 | { 1, 10000, 10, 1 }, |
88 | { 1, 10, 1, 0 }, | |
89 | }; | |
90 | ||
8c721f83 EB |
91 | static gchar *params_source[] = { |
92 | "SRTM Global 90m (3 arcsec)", | |
93 | #ifdef VIK_CONFIG_DEM24K | |
94 | "USA 10m (USGS 24k)", | |
95 | #endif | |
96 | "None", | |
4235f369 | 97 | NULL |
8c721f83 EB |
98 | }; |
99 | ||
c07088dd | 100 | static gchar *params_type[] = { |
c3c75563 GB |
101 | N_("Absolute height"), |
102 | N_("Height gradient"), | |
c07088dd DRP |
103 | NULL |
104 | }; | |
105 | ||
8c721f83 EB |
106 | enum { DEM_SOURCE_SRTM, |
107 | #ifdef VIK_CONFIG_DEM24K | |
108 | DEM_SOURCE_DEM24K, | |
109 | #endif | |
110 | DEM_SOURCE_NONE, | |
111 | }; | |
112 | ||
c07088dd DRP |
113 | enum { DEM_TYPE_HEIGHT = 0, |
114 | DEM_TYPE_GRADIENT, | |
115 | DEM_TYPE_NONE, | |
116 | }; | |
117 | ||
ad0a8c2d | 118 | static VikLayerParam dem_layer_params[] = { |
4c77d5e0 GB |
119 | { "files", VIK_LAYER_PARAM_STRING_LIST, VIK_LAYER_GROUP_NONE, N_("DEM Files:"), VIK_LAYER_WIDGET_FILELIST }, |
120 | { "source", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Download Source:"), VIK_LAYER_WIDGET_RADIOGROUP_STATIC, params_source, NULL }, | |
121 | { "color", VIK_LAYER_PARAM_STRING, VIK_LAYER_GROUP_NONE, N_("Color:"), VIK_LAYER_WIDGET_ENTRY }, | |
c07088dd | 122 | { "type", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Type:"), VIK_LAYER_WIDGET_RADIOGROUP_STATIC, params_type, NULL }, |
4c77d5e0 GB |
123 | { "min_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Min Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 }, |
124 | { "max_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Max Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 }, | |
125 | { "line_thickness", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Line Thickness:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 1 }, | |
ad0a8c2d EB |
126 | }; |
127 | ||
8c721f83 | 128 | |
c07088dd | 129 | enum { PARAM_FILES=0, PARAM_SOURCE, PARAM_COLOR, PARAM_TYPE, PARAM_MIN_ELEV, PARAM_MAX_ELEV, PARAM_LINE_THICKNESS, NUM_PARAMS }; |
8c721f83 | 130 | |
0c1044e9 EB |
131 | static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp); |
132 | static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ); | |
133 | static gboolean dem_layer_download_click ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ); | |
134 | ||
135 | static VikToolInterface dem_tools[] = { | |
4c77d5e0 | 136 | { N_("DEM Download/Import"), (VikToolConstructorFunc) dem_layer_download_create, NULL, NULL, NULL, |
bce3a7b0 | 137 | (VikToolMouseFunc) dem_layer_download_click, NULL, (VikToolMouseFunc) dem_layer_download_release, |
5bfafde9 | 138 | (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_demdl_pixbuf }, |
0c1044e9 EB |
139 | }; |
140 | ||
141 | ||
ad0a8c2d EB |
142 | /* |
143 | */ | |
144 | ||
c07088dd | 145 | static gchar *dem_height_colors[] = { |
ad0a8c2d | 146 | "#0000FF", |
c07088dd DRP |
147 | "#9b793c", "#9c7d40", "#9d8144", "#9e8549", "#9f894d", "#a08d51", "#a29156", "#a3955a", "#a4995e", "#a69d63", |
148 | "#a89f65", "#aaa267", "#ada569", "#afa76b", "#b1aa6d", "#b4ad6f", "#b6b071", "#b9b373", "#bcb676", "#beb978", | |
149 | "#c0bc7a", "#c2c07d", "#c4c37f", "#c6c681", "#c8ca84", "#cacd86", "#ccd188", "#cfd58b", "#c2ce84", "#b5c87e", | |
150 | "#a9c278", "#9cbb71", "#8fb56b", "#83af65", "#76a95e", "#6aa358", "#5e9d52", "#63a055", "#69a458", "#6fa85c", | |
151 | "#74ac5f", "#7ab063", "#80b467", "#86b86a", "#8cbc6e", "#92c072", "#94c175", "#97c278", "#9ac47c", "#9cc57f", | |
152 | "#9fc682", "#a2c886", "#a4c989", "#a7cb8d", "#aacd91", "#afce99", "#b5d0a1", "#bbd2aa", "#c0d3b2", "#c6d5ba", | |
153 | "#ccd7c3", "#d1d9cb", "#d7dbd4", "#DDDDDD", "#e0e0e0", "#e4e4e4", "#e8e8e8", "#ebebeb", "#efefef", "#f3f3f3", | |
154 | "#f7f7f7", "#fbfbfb", "#ffffff" | |
ad0a8c2d EB |
155 | }; |
156 | ||
c07088dd DRP |
157 | static const guint DEM_N_HEIGHT_COLORS = sizeof(dem_height_colors)/sizeof(dem_height_colors[0]); |
158 | ||
ad0a8c2d | 159 | /* |
c07088dd DRP |
160 | "#9b793c", "#9e8549", "#a29156", "#a69d63", "#ada569", "#b4ad6f", "#bcb676", "#c2c07d", "#c8ca84", "#cfd58b", |
161 | "#a9c278", "#83af65", "#5e9d52", "#6fa85c", "#80b467", "#92c072", "#9ac47c", "#a2c886", "#aacd91", "#bbd2aa", | |
162 | "#ccd7c3", "#DDDDDD", "#e8e8e8", "#f3f3f3", "#FFFFFF" | |
ad0a8c2d EB |
163 | }; |
164 | */ | |
165 | ||
c07088dd DRP |
166 | static gchar *dem_gradient_colors[] = { |
167 | "#AAAAAA" | |
168 | "#000000", "#000011", "#000022", "#000033", "#000044", "#00004c", "#000055", "#00005d", "#000066", "#00006e", | |
169 | "#000077", "#00007f", "#000088", "#000090", "#000099", "#0000a1", "#0000aa", "#0000b2", "#0000bb", "#0000c3", | |
170 | "#0000cc", "#0000d4", "#0000dd", "#0000e5", "#0000ee", "#0000f6", "#0000ff", "#0008f7", "#0011ee", "#0019e6", | |
171 | "#0022dd", "#002ad5", "#0033cc", "#003bc4", "#0044bb", "#004cb3", "#0055aa", "#005da2", "#006699", "#006e91", | |
172 | "#007788", "#007f80", "#008877", "#00906f", "#009966", "#00a15e", "#00aa55", "#00b24d", "#00bb44", "#00c33c", | |
173 | "#00cc33", "#00d42b", "#00dd22", "#00e51a", "#00ee11", "#00f609", "#00ff00", "#08f700", "#11ee00", "#19e600", | |
174 | "#22dd00", "#2ad500", "#33cc00", "#3bc400", "#44bb00", "#4cb300", "#55aa00", "#5da200", "#669900", "#6e9100", | |
175 | "#778800", "#7f8000", "#887700", "#906f00", "#996600", "#a15e00", "#aa5500", "#b24d00", "#bb4400", "#c33c00", | |
176 | "#cc3300", "#d42b00", "#dd2200", "#e51a00", "#ee1100", "#f60900", "#ff0000", | |
177 | "#FFFFFF" | |
178 | }; | |
179 | ||
180 | static const guint DEM_N_GRADIENT_COLORS = sizeof(dem_gradient_colors)/sizeof(dem_gradient_colors[0]); | |
ad0a8c2d | 181 | |
ad0a8c2d EB |
182 | |
183 | VikLayerInterface vik_dem_layer_interface = { | |
184 | "DEM", | |
5bfafde9 | 185 | &vikdemlayer_pixbuf, |
ad0a8c2d | 186 | |
0c1044e9 EB |
187 | dem_tools, |
188 | sizeof(dem_tools) / sizeof(dem_tools[0]), | |
ad0a8c2d EB |
189 | |
190 | dem_layer_params, | |
191 | NUM_PARAMS, | |
192 | NULL, | |
193 | 0, | |
194 | ||
195 | VIK_MENU_ITEM_ALL, | |
196 | ||
197 | (VikLayerFuncCreate) vik_dem_layer_create, | |
198 | (VikLayerFuncRealize) NULL, | |
b112cbf5 | 199 | (VikLayerFuncPostRead) dem_layer_post_read, |
ad0a8c2d EB |
200 | (VikLayerFuncFree) vik_dem_layer_free, |
201 | ||
202 | (VikLayerFuncProperties) NULL, | |
203 | (VikLayerFuncDraw) vik_dem_layer_draw, | |
204 | (VikLayerFuncChangeCoordMode) NULL, | |
205 | ||
206 | (VikLayerFuncSetMenuItemsSelection) NULL, | |
207 | (VikLayerFuncGetMenuItemsSelection) NULL, | |
208 | ||
209 | (VikLayerFuncAddMenuItems) NULL, | |
210 | (VikLayerFuncSublayerAddMenuItems) NULL, | |
211 | ||
212 | (VikLayerFuncSublayerRenameRequest) NULL, | |
213 | (VikLayerFuncSublayerToggleVisible) NULL, | |
214 | ||
ad0a8c2d EB |
215 | (VikLayerFuncMarshall) dem_layer_marshall, |
216 | (VikLayerFuncUnmarshall) dem_layer_unmarshall, | |
217 | ||
218 | (VikLayerFuncSetParam) dem_layer_set_param, | |
219 | (VikLayerFuncGetParam) dem_layer_get_param, | |
220 | ||
221 | (VikLayerFuncReadFileData) NULL, | |
222 | (VikLayerFuncWriteFileData) NULL, | |
223 | ||
224 | (VikLayerFuncDeleteItem) NULL, | |
225 | (VikLayerFuncCopyItem) NULL, | |
226 | (VikLayerFuncPasteItem) NULL, | |
227 | (VikLayerFuncFreeCopiedItem) NULL, | |
228 | (VikLayerFuncDragDropRequest) NULL, | |
229 | }; | |
230 | ||
231 | struct _VikDEMLayer { | |
232 | VikLayer vl; | |
233 | GdkGC *gc; | |
234 | GdkGC **gcs; | |
c07088dd | 235 | GdkGC **gcsgradient; |
ad0a8c2d | 236 | GList *files; |
415302f4 | 237 | gdouble min_elev; |
ad0a8c2d EB |
238 | gdouble max_elev; |
239 | guint8 line_thickness; | |
240 | gchar *color; | |
8c721f83 | 241 | guint source; |
c07088dd | 242 | guint type; |
ad0a8c2d EB |
243 | }; |
244 | ||
245 | GType vik_dem_layer_get_type () | |
246 | { | |
247 | static GType vdl_type = 0; | |
248 | ||
249 | if (!vdl_type) | |
250 | { | |
251 | static const GTypeInfo vdl_info = | |
252 | { | |
253 | sizeof (VikDEMLayerClass), | |
254 | NULL, /* base_init */ | |
255 | NULL, /* base_finalize */ | |
256 | NULL, /* class init */ | |
257 | NULL, /* class_finalize */ | |
258 | NULL, /* class_data */ | |
259 | sizeof (VikDEMLayer), | |
260 | 0, | |
261 | NULL /* instance init */ | |
262 | }; | |
263 | vdl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikDEMLayer", &vdl_info, 0 ); | |
264 | } | |
265 | ||
266 | return vdl_type; | |
267 | } | |
268 | ||
ad0a8c2d EB |
269 | static void dem_layer_marshall( VikDEMLayer *vdl, guint8 **data, gint *len ) |
270 | { | |
271 | vik_layer_marshall_params ( VIK_LAYER(vdl), data, len ); | |
272 | } | |
273 | ||
274 | static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp ) | |
275 | { | |
fa86f1c0 EB |
276 | VikDEMLayer *rv = vik_dem_layer_new (); |
277 | gint i; | |
278 | ||
279 | /* TODO: share GCS between layers */ | |
c07088dd DRP |
280 | for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) |
281 | rv->gcs[i] = vik_viewport_new_gc ( vvp, dem_height_colors[i], rv->line_thickness ); | |
282 | ||
283 | for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ ) | |
284 | rv->gcsgradient[i] = vik_viewport_new_gc ( vvp, dem_gradient_colors[i], rv->line_thickness ); | |
fa86f1c0 | 285 | |
ad0a8c2d EB |
286 | vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp ); |
287 | return rv; | |
288 | } | |
289 | ||
290 | gboolean dem_layer_set_param ( VikDEMLayer *vdl, guint16 id, VikLayerParamData data, VikViewport *vp ) | |
291 | { | |
292 | switch ( id ) | |
293 | { | |
294 | case PARAM_COLOR: if ( vdl->color ) g_free ( vdl->color ); vdl->color = g_strdup ( data.s ); break; | |
8c721f83 | 295 | case PARAM_SOURCE: vdl->source = data.u; break; |
c07088dd | 296 | case PARAM_TYPE: vdl->type = data.u; break; |
415302f4 | 297 | case PARAM_MIN_ELEV: vdl->min_elev = data.d; break; |
ad0a8c2d EB |
298 | case PARAM_MAX_ELEV: vdl->max_elev = data.d; break; |
299 | case PARAM_LINE_THICKNESS: if ( data.u >= 1 && data.u <= 15 ) vdl->line_thickness = data.u; break; | |
300 | case PARAM_FILES: a_dems_load_list ( &(data.sl) ); a_dems_list_free ( vdl->files ); vdl->files = data.sl; break; | |
301 | } | |
302 | return TRUE; | |
303 | } | |
304 | ||
305 | static VikLayerParamData dem_layer_get_param ( VikDEMLayer *vdl, guint16 id ) | |
306 | { | |
307 | VikLayerParamData rv; | |
308 | switch ( id ) | |
309 | { | |
310 | case PARAM_FILES: rv.sl = vdl->files; break; | |
8c721f83 | 311 | case PARAM_SOURCE: rv.u = vdl->source; break; |
c07088dd | 312 | case PARAM_TYPE: rv.u = vdl->type; break; |
ad0a8c2d | 313 | case PARAM_COLOR: rv.s = vdl->color ? vdl->color : ""; break; |
415302f4 | 314 | case PARAM_MIN_ELEV: rv.d = vdl->min_elev; break; |
ad0a8c2d EB |
315 | case PARAM_MAX_ELEV: rv.d = vdl->max_elev; break; |
316 | case PARAM_LINE_THICKNESS: rv.i = vdl->line_thickness; break; | |
317 | } | |
318 | return rv; | |
319 | } | |
320 | ||
07059501 | 321 | static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file ) |
ad0a8c2d | 322 | { |
94933cb8 | 323 | VikDEMLayer *vdl = VIK_DEM_LAYER(vl); |
ad0a8c2d EB |
324 | if ( vdl->gc ) |
325 | g_object_unref ( G_OBJECT(vdl->gc) ); | |
326 | ||
327 | vdl->gc = vik_viewport_new_gc ( vp, vdl->color, vdl->line_thickness ); | |
328 | } | |
329 | ||
330 | VikDEMLayer *vik_dem_layer_new ( ) | |
331 | { | |
332 | VikDEMLayer *vdl = VIK_DEM_LAYER ( g_object_new ( VIK_DEM_LAYER_TYPE, NULL ) ); | |
fa86f1c0 | 333 | |
ad0a8c2d EB |
334 | vik_layer_init ( VIK_LAYER(vdl), VIK_LAYER_DEM ); |
335 | ||
336 | vdl->files = NULL; | |
337 | ||
338 | ||
339 | vdl->gc = NULL; | |
340 | ||
c07088dd DRP |
341 | vdl->gcs = g_malloc(sizeof(GdkGC *)*DEM_N_HEIGHT_COLORS); |
342 | vdl->gcsgradient = g_malloc(sizeof(GdkGC *)*DEM_N_GRADIENT_COLORS); | |
fa86f1c0 | 343 | /* make new gcs only if we need it (copy layer -> use old) */ |
ad0a8c2d | 344 | |
415302f4 | 345 | vdl->min_elev = 0.0; |
ad0a8c2d | 346 | vdl->max_elev = 1000.0; |
8c721f83 | 347 | vdl->source = DEM_SOURCE_SRTM; |
c07088dd | 348 | vdl->type = DEM_TYPE_HEIGHT; |
ad0a8c2d EB |
349 | vdl->line_thickness = 3; |
350 | vdl->color = NULL; | |
351 | return vdl; | |
352 | } | |
353 | ||
354 | ||
f9518bc9 DRP |
355 | static inline guint16 get_height_difference(gint16 elev, gint16 new_elev) |
356 | { | |
357 | if(new_elev == VIK_DEM_INVALID_ELEVATION) | |
358 | return 0; | |
359 | else | |
360 | return abs(new_elev - elev); | |
361 | } | |
362 | ||
0c1044e9 | 363 | |
ad0a8c2d EB |
364 | static void vik_dem_layer_draw_dem ( VikDEMLayer *vdl, VikViewport *vp, VikDEM *dem ) |
365 | { | |
f9518bc9 | 366 | VikDEMColumn *column, *prevcolumn, *nextcolumn; |
ad0a8c2d EB |
367 | |
368 | struct LatLon dem_northeast, dem_southwest; | |
f9518bc9 | 369 | gdouble max_lat, max_lon, min_lat, min_lon; |
ad0a8c2d | 370 | |
ad0a8c2d EB |
371 | /**** Check if viewport and DEM data overlap ****/ |
372 | ||
373 | /* get min, max lat/lon of viewport */ | |
0c1044e9 | 374 | vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon ); |
ad0a8c2d EB |
375 | |
376 | /* get min, max lat/lon of DEM data */ | |
377 | if ( dem->horiz_units == VIK_DEM_HORIZ_LL_ARCSECONDS ) { | |
378 | dem_northeast.lat = dem->max_north / 3600.0; | |
379 | dem_northeast.lon = dem->max_east / 3600.0; | |
380 | dem_southwest.lat = dem->min_north / 3600.0; | |
381 | dem_southwest.lon = dem->min_east / 3600.0; | |
382 | } else if ( dem->horiz_units == VIK_DEM_HORIZ_UTM_METERS ) { | |
383 | struct UTM dem_northeast_utm, dem_southwest_utm; | |
384 | dem_northeast_utm.northing = dem->max_north; | |
385 | dem_northeast_utm.easting = dem->max_east; | |
386 | dem_southwest_utm.northing = dem->min_north; | |
387 | dem_southwest_utm.easting = dem->min_east; | |
388 | dem_northeast_utm.zone = dem_southwest_utm.zone = dem->utm_zone; | |
389 | dem_northeast_utm.letter = dem_southwest_utm.letter = dem->utm_letter; | |
390 | ||
391 | a_coords_utm_to_latlon(&dem_northeast_utm, &dem_northeast); | |
392 | a_coords_utm_to_latlon(&dem_southwest_utm, &dem_southwest); | |
393 | } | |
394 | ||
395 | if ( (max_lat > dem_northeast.lat && min_lat > dem_northeast.lat) || | |
396 | (max_lat < dem_southwest.lat && min_lat < dem_southwest.lat) ) | |
397 | return; | |
398 | else if ( (max_lon > dem_northeast.lon && min_lon > dem_northeast.lon) || | |
399 | (max_lon < dem_southwest.lon && min_lon < dem_southwest.lon) ) | |
400 | return; | |
401 | /* else they overlap */ | |
402 | ||
403 | /**** End Overlap Check ****/ | |
0c1044e9 EB |
404 | /* boxes to show where we have DEM instead of actually drawing the DEM. |
405 | * useful if we want to see what areas we have coverage for (if we want | |
406 | * to get elevation data for a track) but don't want to cover the map. | |
407 | */ | |
408 | ||
409 | #if 0 | |
410 | /* draw a box if a DEM is loaded. in future I'd like to add an option for this | |
411 | * this is useful if we want to see what areas we have dem for but don't want to | |
412 | * cover the map (or maybe we just need translucent DEM?) */ | |
413 | { | |
414 | VikCoord demne, demsw; | |
415 | gint x1, y1, x2, y2; | |
416 | vik_coord_load_from_latlon(&demne, vik_viewport_get_coord_mode(vp), &dem_northeast); | |
417 | vik_coord_load_from_latlon(&demsw, vik_viewport_get_coord_mode(vp), &dem_southwest); | |
418 | ||
419 | vik_viewport_coord_to_screen ( vp, &demne, &x1, &y1 ); | |
420 | vik_viewport_coord_to_screen ( vp, &demsw, &x2, &y2 ); | |
421 | ||
422 | if ( x1 > vik_viewport_get_width(vp) ) x1=vik_viewport_get_width(vp); | |
423 | if ( y2 > vik_viewport_get_height(vp) ) y2=vik_viewport_get_height(vp); | |
424 | if ( x2 < 0 ) x2 = 0; | |
425 | if ( y1 < 0 ) y1 = 0; | |
426 | vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc, | |
427 | FALSE, x2, y1, x1-x2, y2-y1 ); | |
0c1044e9 EB |
428 | return; |
429 | } | |
430 | #endif | |
ad0a8c2d EB |
431 | |
432 | if ( dem->horiz_units == VIK_DEM_HORIZ_LL_ARCSECONDS ) { | |
433 | VikCoord tmp; /* TODO: don't use coord_load_from_latlon, especially if in latlon drawing mode */ | |
434 | ||
435 | gdouble max_lat_as, max_lon_as, min_lat_as, min_lon_as; | |
436 | gdouble start_lat_as, end_lat_as, start_lon_as, end_lon_as; | |
437 | ||
438 | gdouble start_lat, end_lat, start_lon, end_lon; | |
439 | ||
440 | struct LatLon counter; | |
441 | ||
442 | guint x, y, start_x, start_y; | |
443 | ||
444 | gint16 elev; | |
445 | ||
f9518bc9 | 446 | guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 80 ); /* todo: smarter calculation. */ |
ad0a8c2d EB |
447 | |
448 | gdouble nscale_deg = dem->north_scale / ((gdouble) 3600); | |
449 | gdouble escale_deg = dem->east_scale / ((gdouble) 3600); | |
450 | ||
451 | max_lat_as = max_lat * 3600; | |
452 | min_lat_as = min_lat * 3600; | |
453 | max_lon_as = max_lon * 3600; | |
454 | min_lon_as = min_lon * 3600; | |
455 | ||
456 | start_lat_as = MAX(min_lat_as, dem->min_north); | |
457 | end_lat_as = MIN(max_lat_as, dem->max_north); | |
458 | start_lon_as = MAX(min_lon_as, dem->min_east); | |
459 | end_lon_as = MIN(max_lon_as, dem->max_east); | |
460 | ||
461 | start_lat = floor(start_lat_as / dem->north_scale) * nscale_deg; | |
462 | end_lat = ceil (end_lat_as / dem->north_scale) * nscale_deg; | |
463 | start_lon = floor(start_lon_as / dem->east_scale) * escale_deg; | |
464 | end_lon = ceil (end_lon_as / dem->east_scale) * escale_deg; | |
465 | ||
466 | vik_dem_east_north_to_xy ( dem, start_lon_as, start_lat_as, &start_x, &start_y ); | |
f9518bc9 DRP |
467 | guint gradient_skip_factor = 1; |
468 | if(vdl->type == DEM_TYPE_GRADIENT) | |
469 | gradient_skip_factor = skip_factor; | |
ad0a8c2d | 470 | |
415302f4 EB |
471 | /* verify sane elev interval */ |
472 | if ( vdl->max_elev <= vdl->min_elev ) | |
473 | vdl->max_elev = vdl->min_elev + 1; | |
474 | ||
f9518bc9 DRP |
475 | for ( x=start_x, counter.lon = start_lon; counter.lon <= end_lon+escale_deg*skip_factor; counter.lon += escale_deg * skip_factor, x += skip_factor ) { |
476 | // NOTE: ( counter.lon <= end_lon + ESCALE_DEG*SKIP_FACTOR ) is neccessary so in high zoom modes, | |
477 | // the leftmost column does also get drawn, if the center point is out of viewport. | |
478 | if ( x >= 0 && x < dem->n_columns ) { | |
ad0a8c2d | 479 | column = g_ptr_array_index ( dem->columns, x ); |
f9518bc9 DRP |
480 | // get previous and next column. catch out-of-bound. |
481 | gint32 new_x = x; | |
482 | new_x -= gradient_skip_factor; | |
483 | if(new_x < 1) | |
484 | prevcolumn = g_ptr_array_index ( dem->columns, x+1); | |
485 | else | |
486 | prevcolumn = g_ptr_array_index ( dem->columns, new_x); | |
487 | new_x = x; | |
488 | new_x += gradient_skip_factor; | |
489 | if(new_x >= dem->n_columns) | |
490 | nextcolumn = g_ptr_array_index ( dem->columns, x-1); | |
491 | else | |
492 | nextcolumn = g_ptr_array_index ( dem->columns, new_x); | |
c07088dd | 493 | |
ad0a8c2d EB |
494 | for ( y=start_y, counter.lat = start_lat; counter.lat <= end_lat; counter.lat += nscale_deg * skip_factor, y += skip_factor ) { |
495 | if ( y > column->n_points ) | |
496 | break; | |
f9518bc9 | 497 | |
ad0a8c2d | 498 | elev = column->points[y]; |
415302f4 | 499 | |
f9518bc9 DRP |
500 | // calculate bounding box for drawing |
501 | gint box_x, box_y, box_width, box_height; | |
502 | struct LatLon box_c; | |
503 | box_c = counter; | |
504 | box_c.lat += (nscale_deg * skip_factor)/2; | |
505 | box_c.lon -= (escale_deg * skip_factor)/2; | |
506 | vik_coord_load_from_latlon(&tmp, vik_viewport_get_coord_mode(vp), &box_c); | |
507 | vik_viewport_coord_to_screen(vp, &tmp, &box_x, &box_y); | |
508 | // catch box at borders | |
509 | if(box_x < 0) | |
510 | box_x = 0; | |
511 | if(box_y < 0) | |
512 | box_y = 0; | |
513 | box_c.lat -= nscale_deg * skip_factor; | |
514 | box_c.lon += escale_deg * skip_factor; | |
515 | vik_coord_load_from_latlon(&tmp, vik_viewport_get_coord_mode(vp), &box_c); | |
516 | vik_viewport_coord_to_screen(vp, &tmp, &box_width, &box_height); | |
517 | box_width -= box_x; | |
518 | box_height -= box_y; | |
519 | // catch box at borders | |
520 | if(box_width < 0 || box_height < 0) | |
521 | continue; // skip this. this is out of our viewport anyway. FIXME: why? | |
522 | ||
523 | if(vdl->type == DEM_TYPE_HEIGHT) { | |
524 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev ) | |
525 | elev=vdl->min_elev; | |
526 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev ) | |
527 | elev=vdl->max_elev; | |
528 | } | |
415302f4 | 529 | |
ad0a8c2d | 530 | { |
f9518bc9 DRP |
531 | if(box_width < 0 || box_height < 0) // FIXME: why does this happen? |
532 | continue; | |
533 | ||
534 | if(vdl->type == DEM_TYPE_GRADIENT) { | |
535 | if( elev == VIK_DEM_INVALID_ELEVATION ) { | |
536 | /* don't draw it */ | |
537 | } else { | |
538 | // calculate and sum gradient in all directions | |
539 | gint16 change = 0; | |
540 | gint32 new_y; | |
541 | ||
542 | // calculate gradient from height points all around the current one | |
543 | new_y = y - gradient_skip_factor; | |
544 | if(new_y < 0) | |
545 | new_y = y; | |
546 | change += get_height_difference(elev, prevcolumn->points[new_y]); | |
547 | change += get_height_difference(elev, column->points[new_y]); | |
548 | change += get_height_difference(elev, nextcolumn->points[new_y]); | |
549 | ||
550 | change += get_height_difference(elev, prevcolumn->points[y]); | |
551 | change += get_height_difference(elev, nextcolumn->points[y]); | |
552 | ||
553 | new_y = y + gradient_skip_factor; | |
554 | if(new_y >= column->n_points) | |
555 | new_y = y; | |
556 | change += get_height_difference(elev, prevcolumn->points[new_y]); | |
557 | change += get_height_difference(elev, column->points[new_y]); | |
558 | change += get_height_difference(elev, nextcolumn->points[new_y]); | |
559 | ||
560 | change = change / ((skip_factor > 1) ? log(skip_factor) : 0.55); // FIXME: better calc. | |
561 | ||
562 | if(change < vdl->min_elev) | |
563 | change = vdl->min_elev; | |
564 | ||
565 | if(change > vdl->max_elev) | |
566 | change = vdl->max_elev; | |
567 | ||
568 | // void vik_viewport_draw_rectangle ( VikViewport *vvp, GdkGC *gc, gboolean filled, gint x1, gint y1, gint x2, gint y2 ); | |
569 | vik_viewport_draw_rectangle(vp, vdl->gcsgradient[(gint)floor((change - vdl->min_elev)/(vdl->max_elev - vdl->min_elev)*(DEM_N_GRADIENT_COLORS-2))+1], TRUE, box_x, box_y, box_width, box_height); | |
570 | } | |
c07088dd | 571 | } else { |
f9518bc9 DRP |
572 | if(vdl->type == DEM_TYPE_HEIGHT) { |
573 | if ( elev == VIK_DEM_INVALID_ELEVATION ) | |
574 | ; /* don't draw it */ | |
575 | else if ( elev <= 0 ) | |
576 | vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, box_x, box_y, box_width, box_height); | |
577 | else | |
578 | vik_viewport_draw_rectangle(vp, vdl->gcs[(gint)floor((elev - vdl->min_elev)/(vdl->max_elev - vdl->min_elev)*(DEM_N_HEIGHT_COLORS-2))+1], TRUE, box_x, box_y, box_width, box_height); | |
579 | } | |
580 | } | |
ad0a8c2d EB |
581 | } |
582 | } /* for y= */ | |
583 | } | |
584 | } /* for x= */ | |
585 | } else if ( dem->horiz_units == VIK_DEM_HORIZ_UTM_METERS ) { | |
586 | gdouble max_nor, max_eas, min_nor, min_eas; | |
587 | gdouble start_nor, start_eas, end_nor, end_eas; | |
588 | ||
589 | gint16 elev; | |
590 | ||
591 | guint x, y, start_x, start_y; | |
592 | ||
593 | VikCoord tmp; /* TODO: don't use coord_load_from_latlon, especially if in latlon drawing mode */ | |
594 | struct UTM counter; | |
595 | ||
596 | guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 10 ); /* todo: smarter calculation. */ | |
597 | ||
0c1044e9 EB |
598 | VikCoord tleft, tright, bleft, bright; |
599 | ||
600 | vik_viewport_screen_to_coord ( vp, 0, 0, &tleft ); | |
601 | vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &tright ); | |
602 | vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &bleft ); | |
603 | vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &bright ); | |
604 | ||
605 | ||
ad0a8c2d EB |
606 | vik_coord_convert(&tleft, VIK_COORD_UTM); |
607 | vik_coord_convert(&tright, VIK_COORD_UTM); | |
608 | vik_coord_convert(&bleft, VIK_COORD_UTM); | |
609 | vik_coord_convert(&bright, VIK_COORD_UTM); | |
610 | ||
611 | max_nor = MAX(tleft.north_south, tright.north_south); | |
612 | min_nor = MIN(bleft.north_south, bright.north_south); | |
613 | max_eas = MAX(bright.east_west, tright.east_west); | |
614 | min_eas = MIN(bleft.east_west, tleft.east_west); | |
615 | ||
616 | start_nor = MAX(min_nor, dem->min_north); | |
617 | end_nor = MIN(max_nor, dem->max_north); | |
618 | if ( tleft.utm_zone == dem->utm_zone && bleft.utm_zone == dem->utm_zone | |
619 | && (tleft.utm_letter >= 'N') == (dem->utm_letter >= 'N') | |
620 | && (bleft.utm_letter >= 'N') == (dem->utm_letter >= 'N') ) /* if the utm zones/hemispheres are different, min_eas will be bogus */ | |
621 | start_eas = MAX(min_eas, dem->min_east); | |
622 | else | |
623 | start_eas = dem->min_east; | |
624 | if ( tright.utm_zone == dem->utm_zone && bright.utm_zone == dem->utm_zone | |
625 | && (tright.utm_letter >= 'N') == (dem->utm_letter >= 'N') | |
626 | && (bright.utm_letter >= 'N') == (dem->utm_letter >= 'N') ) /* if the utm zones/hemispheres are different, min_eas will be bogus */ | |
627 | end_eas = MIN(max_eas, dem->max_east); | |
628 | else | |
629 | end_eas = dem->max_east; | |
630 | ||
631 | start_nor = floor(start_nor / dem->north_scale) * dem->north_scale; | |
632 | end_nor = ceil (end_nor / dem->north_scale) * dem->north_scale; | |
633 | start_eas = floor(start_eas / dem->east_scale) * dem->east_scale; | |
634 | end_eas = ceil (end_eas / dem->east_scale) * dem->east_scale; | |
635 | ||
636 | vik_dem_east_north_to_xy ( dem, start_eas, start_nor, &start_x, &start_y ); | |
637 | ||
638 | /* TODO: why start_x and start_y are -1 -- rounding error from above? */ | |
639 | ||
640 | counter.zone = dem->utm_zone; | |
641 | counter.letter = dem->utm_letter; | |
642 | ||
643 | for ( x=start_x, counter.easting = start_eas; counter.easting <= end_eas; counter.easting += dem->east_scale * skip_factor, x += skip_factor ) { | |
644 | if ( x > 0 && x < dem->n_columns ) { | |
645 | column = g_ptr_array_index ( dem->columns, x ); | |
646 | for ( y=start_y, counter.northing = start_nor; counter.northing <= end_nor; counter.northing += dem->north_scale * skip_factor, y += skip_factor ) { | |
647 | if ( y > column->n_points ) | |
648 | continue; | |
649 | elev = column->points[y]; | |
415302f4 EB |
650 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev ) |
651 | elev=vdl->min_elev; | |
652 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev ) | |
653 | elev=vdl->max_elev; | |
654 | ||
ad0a8c2d EB |
655 | { |
656 | gint a, b; | |
657 | vik_coord_load_from_utm(&tmp, vik_viewport_get_coord_mode(vp), &counter); | |
658 | vik_viewport_coord_to_screen(vp, &tmp, &a, &b); | |
659 | if ( elev == VIK_DEM_INVALID_ELEVATION ) | |
660 | ; /* don't draw it */ | |
661 | else if ( elev <= 0 ) | |
f9518bc9 | 662 | vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, a-1, b-1, 2, 2 ); |
ad0a8c2d | 663 | else |
f9518bc9 | 664 | vik_viewport_draw_rectangle(vp, vdl->gcs[(gint)floor((elev - vdl->min_elev)/(vdl->max_elev - vdl->min_elev)*(DEM_N_HEIGHT_COLORS-2))+1], TRUE, a-1, b-1, 2, 2 ); |
ad0a8c2d EB |
665 | } |
666 | } /* for y= */ | |
667 | } | |
668 | } /* for x= */ | |
669 | } | |
670 | } | |
671 | ||
0c1044e9 EB |
672 | /* return the continent for the specified lat, lon */ |
673 | /* TODO */ | |
0e25c0d0 | 674 | static const gchar *srtm_continent_dir ( gint lat, gint lon ) |
0c1044e9 | 675 | { |
0e25c0d0 QT |
676 | extern const char *_srtm_continent_data[]; |
677 | static GHashTable *srtm_continent = NULL; | |
678 | const gchar *continent; | |
679 | gchar name[16]; | |
680 | ||
681 | if (!srtm_continent) { | |
682 | const gchar **s; | |
683 | ||
684 | srtm_continent = g_hash_table_new(g_str_hash, g_str_equal); | |
685 | s = _srtm_continent_data; | |
686 | while (*s != (gchar *)-1) { | |
687 | continent = *s++; | |
688 | while (*s) { | |
0654760a | 689 | g_hash_table_insert(srtm_continent, (gpointer) *s, (gpointer) continent); |
0e25c0d0 QT |
690 | s++; |
691 | } | |
692 | s++; | |
693 | } | |
694 | } | |
695 | g_snprintf(name, sizeof(name), "%c%02d%c%03d", | |
696 | (lat >= 0) ? 'N' : 'S', ABS(lat), | |
697 | (lon >= 0) ? 'E' : 'W', ABS(lon)); | |
698 | ||
699 | return(g_hash_table_lookup(srtm_continent, name)); | |
0c1044e9 EB |
700 | } |
701 | ||
ad0a8c2d EB |
702 | void vik_dem_layer_draw ( VikDEMLayer *vdl, gpointer data ) |
703 | { | |
704 | VikViewport *vp = (VikViewport *) data; | |
705 | GList *dems_iter = vdl->files; | |
706 | VikDEM *dem; | |
0c1044e9 | 707 | |
0c1044e9 EB |
708 | |
709 | /* search for SRTM3 90m */ | |
8c721f83 EB |
710 | |
711 | if ( vdl->source == DEM_SOURCE_SRTM ) | |
712 | srtm_draw_existence ( vp ); | |
713 | #ifdef VIK_CONFIG_DEM24K | |
714 | else if ( vdl->source == DEM_SOURCE_DEM24K ) | |
715 | dem24k_draw_existence ( vp ); | |
716 | #endif | |
0c1044e9 | 717 | |
ad0a8c2d EB |
718 | while ( dems_iter ) { |
719 | dem = a_dems_get ( (const char *) (dems_iter->data) ); | |
720 | if ( dem ) | |
721 | vik_dem_layer_draw_dem ( vdl, vp, dem ); | |
722 | dems_iter = dems_iter->next; | |
723 | } | |
724 | } | |
725 | ||
726 | void vik_dem_layer_free ( VikDEMLayer *vdl ) | |
727 | { | |
fa86f1c0 | 728 | gint i; |
ad0a8c2d EB |
729 | if ( vdl->gc != NULL ) |
730 | g_object_unref ( G_OBJECT(vdl->gc) ); | |
731 | ||
732 | if ( vdl->color != NULL ) | |
733 | g_free ( vdl->color ); | |
734 | ||
fa86f1c0 | 735 | if ( vdl->gcs ) |
c07088dd | 736 | for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) |
fa86f1c0 EB |
737 | g_object_unref ( vdl->gcs[i] ); |
738 | g_free ( vdl->gcs ); | |
739 | ||
c07088dd DRP |
740 | if ( vdl->gcsgradient ) |
741 | for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ ) | |
742 | g_object_unref ( vdl->gcsgradient[i] ); | |
743 | g_free ( vdl->gcsgradient ); | |
744 | ||
ad0a8c2d EB |
745 | a_dems_list_free ( vdl->files ); |
746 | } | |
747 | ||
748 | static void dem_layer_update_gc ( VikDEMLayer *vdl, VikViewport *vp, const gchar *color ) | |
749 | { | |
ad0a8c2d EB |
750 | if ( vdl->color ) |
751 | g_free ( vdl->color ); | |
752 | ||
753 | vdl->color = g_strdup ( color ); | |
754 | ||
755 | if ( vdl->gc ) | |
756 | g_object_unref ( G_OBJECT(vdl->gc) ); | |
757 | ||
758 | vdl->gc = vik_viewport_new_gc ( vp, vdl->color, vdl->line_thickness ); | |
ad0a8c2d EB |
759 | } |
760 | ||
761 | VikDEMLayer *vik_dem_layer_create ( VikViewport *vp ) | |
762 | { | |
763 | VikDEMLayer *vdl = vik_dem_layer_new (); | |
fa86f1c0 EB |
764 | gint i; |
765 | ||
766 | /* TODO: share GCS between layers */ | |
c07088dd DRP |
767 | for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) |
768 | vdl->gcs[i] = vik_viewport_new_gc ( vp, dem_height_colors[i], vdl->line_thickness ); | |
769 | ||
770 | for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ ) | |
771 | vdl->gcsgradient[i] = vik_viewport_new_gc ( vp, dem_gradient_colors[i], vdl->line_thickness ); | |
fa86f1c0 | 772 | |
ad0a8c2d EB |
773 | dem_layer_update_gc ( vdl, vp, "red" ); |
774 | return vdl; | |
775 | } | |
8c721f83 EB |
776 | /************************************************************** |
777 | **** SOURCES & DOWNLOADING | |
778 | **************************************************************/ | |
779 | typedef struct { | |
780 | gchar *dest; | |
781 | gdouble lat, lon; | |
782 | ||
783 | GMutex *mutex; | |
784 | VikDEMLayer *vdl; /* NULL if not alive */ | |
785 | ||
786 | guint source; | |
787 | } DEMDownloadParams; | |
788 | ||
ad0a8c2d | 789 | |
0c1044e9 | 790 | /************************************************** |
8c721f83 EB |
791 | * SOURCE: SRTM * |
792 | **************************************************/ | |
793 | ||
794 | static void srtm_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata ) | |
0c1044e9 | 795 | { |
8c721f83 | 796 | gint intlat, intlon; |
0e25c0d0 | 797 | const gchar *continent_dir; |
8c721f83 EB |
798 | |
799 | intlat = (int)floor(p->lat); | |
800 | intlon = (int)floor(p->lon); | |
0e25c0d0 QT |
801 | continent_dir = srtm_continent_dir(intlat, intlon); |
802 | ||
803 | if (!continent_dir) { | |
4258f4e2 | 804 | g_warning(N_("No SRTM data available for %f, %f"), p->lat, p->lon); |
0e25c0d0 QT |
805 | return; |
806 | } | |
807 | ||
65a64219 | 808 | gchar *src_fn = g_strdup_printf("%s%s/%c%02d%c%03d.hgt.zip", |
e6c50657 | 809 | SRTM_HTTP_URI, |
0e25c0d0 | 810 | continent_dir, |
8c721f83 EB |
811 | (intlat >= 0) ? 'N' : 'S', |
812 | ABS(intlat), | |
813 | (intlon >= 0) ? 'E' : 'W', | |
814 | ABS(intlon) ); | |
815 | ||
ae40c2dc | 816 | static DownloadOptions options = { 0, NULL, 0, a_check_map_file }; |
825413ba | 817 | a_http_download_get_url ( SRTM_HTTP_SITE, src_fn, p->dest, &options, NULL ); |
8c721f83 | 818 | g_free ( src_fn ); |
0c1044e9 EB |
819 | } |
820 | ||
8c721f83 | 821 | static gchar *srtm_lat_lon_to_dest_fn ( gdouble lat, gdouble lon ) |
0c1044e9 | 822 | { |
8c721f83 | 823 | gint intlat, intlon; |
0e25c0d0 QT |
824 | const gchar *continent_dir; |
825 | ||
8c721f83 EB |
826 | intlat = (int)floor(lat); |
827 | intlon = (int)floor(lon); | |
0e25c0d0 QT |
828 | continent_dir = srtm_continent_dir(intlat, intlon); |
829 | ||
830 | if (!continent_dir) | |
831 | continent_dir = "nowhere"; | |
832 | ||
833 | return g_strdup_printf("srtm3-%s%s%c%02d%c%03d.hgt.zip", | |
834 | continent_dir, | |
835 | G_DIR_SEPARATOR_S, | |
8c721f83 EB |
836 | (intlat >= 0) ? 'N' : 'S', |
837 | ABS(intlat), | |
838 | (intlon >= 0) ? 'E' : 'W', | |
839 | ABS(intlon) ); | |
0c1044e9 | 840 | |
0c1044e9 EB |
841 | } |
842 | ||
8c721f83 EB |
843 | /* TODO: generalize */ |
844 | static void srtm_draw_existence ( VikViewport *vp ) | |
0c1044e9 | 845 | { |
8c721f83 EB |
846 | gdouble max_lat, max_lon, min_lat, min_lon; |
847 | gchar buf[strlen(MAPS_CACHE_DIR)+strlen(SRTM_CACHE_TEMPLATE)+30]; | |
848 | gint i, j; | |
849 | ||
850 | vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon ); | |
851 | ||
852 | for (i = floor(min_lat); i <= floor(max_lat); i++) { | |
853 | for (j = floor(min_lon); j <= floor(max_lon); j++) { | |
0e25c0d0 QT |
854 | const gchar *continent_dir; |
855 | if ((continent_dir = srtm_continent_dir(i, j)) == NULL) | |
856 | continue; | |
8c721f83 EB |
857 | g_snprintf(buf, sizeof(buf), SRTM_CACHE_TEMPLATE, |
858 | MAPS_CACHE_DIR, | |
0e25c0d0 QT |
859 | continent_dir, |
860 | G_DIR_SEPARATOR_S, | |
8c721f83 EB |
861 | (i >= 0) ? 'N' : 'S', |
862 | ABS(i), | |
863 | (j >= 0) ? 'E' : 'W', | |
864 | ABS(j) ); | |
45acf79e | 865 | if ( g_file_test(buf, G_FILE_TEST_EXISTS ) == TRUE ) { |
8c721f83 EB |
866 | VikCoord ne, sw; |
867 | gint x1, y1, x2, y2; | |
868 | sw.north_south = i; | |
869 | sw.east_west = j; | |
870 | sw.mode = VIK_COORD_LATLON; | |
871 | ne.north_south = i+1; | |
872 | ne.east_west = j+1; | |
873 | ne.mode = VIK_COORD_LATLON; | |
874 | vik_viewport_coord_to_screen ( vp, &sw, &x1, &y1 ); | |
875 | vik_viewport_coord_to_screen ( vp, &ne, &x2, &y2 ); | |
876 | if ( x1 < 0 ) x1 = 0; | |
877 | if ( y2 < 0 ) y2 = 0; | |
878 | vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc, | |
879 | FALSE, x1, y2, x2-x1, y1-y2 ); | |
880 | } | |
881 | } | |
882 | } | |
0c1044e9 EB |
883 | } |
884 | ||
8c721f83 EB |
885 | |
886 | /************************************************** | |
887 | * SOURCE: USGS 24K * | |
888 | **************************************************/ | |
889 | ||
890 | #ifdef VIK_CONFIG_DEM24K | |
891 | ||
892 | static void dem24k_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata ) | |
0c1044e9 | 893 | { |
8c721f83 EB |
894 | /* TODO: dest dir */ |
895 | gchar *cmdline = g_strdup_printf("%s %.03f %.03f", | |
896 | DEM24K_DOWNLOAD_SCRIPT, | |
897 | floor(p->lat*8)/8, | |
898 | ceil(p->lon*8)/8 ); | |
899 | /* FIX: don't use system, use execv or something. check for existence */ | |
900 | system(cmdline); | |
901 | } | |
0c1044e9 | 902 | |
8c721f83 EB |
903 | static gchar *dem24k_lat_lon_to_dest_fn ( gdouble lat, gdouble lon ) |
904 | { | |
905 | return g_strdup_printf("dem24k/%d/%d/%.03f,%.03f.dem", | |
906 | (gint) lat, | |
907 | (gint) lon, | |
908 | floor(lat*8)/8, | |
909 | ceil(lon*8)/8); | |
910 | } | |
0c1044e9 | 911 | |
8c721f83 EB |
912 | /* TODO: generalize */ |
913 | static void dem24k_draw_existence ( VikViewport *vp ) | |
914 | { | |
915 | gdouble max_lat, max_lon, min_lat, min_lon; | |
916 | gchar buf[strlen(MAPS_CACHE_DIR)+40]; | |
917 | gdouble i, j; | |
0c1044e9 | 918 | |
8c721f83 | 919 | vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon ); |
0c1044e9 | 920 | |
8c721f83 EB |
921 | for (i = floor(min_lat*8)/8; i <= floor(max_lat*8)/8; i+=0.125) { |
922 | /* check lat dir first -- faster */ | |
923 | g_snprintf(buf, sizeof(buf), "%sdem24k/%d/", | |
924 | MAPS_CACHE_DIR, | |
925 | (gint) i ); | |
6b1a58ec | 926 | if ( g_file_test(buf, G_FILE_TEST_EXISTS) == FALSE ) |
8c721f83 EB |
927 | continue; |
928 | for (j = floor(min_lon*8)/8; j <= floor(max_lon*8)/8; j+=0.125) { | |
929 | /* check lon dir first -- faster */ | |
930 | g_snprintf(buf, sizeof(buf), "%sdem24k/%d/%d/", | |
931 | MAPS_CACHE_DIR, | |
932 | (gint) i, | |
933 | (gint) j ); | |
45acf79e | 934 | if ( g_file_test(buf, G_FILE_TEST_EXISTS) == FALSE ) |
8c721f83 EB |
935 | continue; |
936 | g_snprintf(buf, sizeof(buf), "%sdem24k/%d/%d/%.03f,%.03f.dem", | |
937 | MAPS_CACHE_DIR, | |
938 | (gint) i, | |
939 | (gint) j, | |
940 | floor(i*8)/8, | |
941 | floor(j*8)/8 ); | |
45acf79e | 942 | if ( g_file_test(buf, G_FILE_TEST_EXISTS ) == TRUE ) { |
8c721f83 EB |
943 | VikCoord ne, sw; |
944 | gint x1, y1, x2, y2; | |
945 | sw.north_south = i; | |
946 | sw.east_west = j-0.125; | |
947 | sw.mode = VIK_COORD_LATLON; | |
948 | ne.north_south = i+0.125; | |
949 | ne.east_west = j; | |
950 | ne.mode = VIK_COORD_LATLON; | |
951 | vik_viewport_coord_to_screen ( vp, &sw, &x1, &y1 ); | |
952 | vik_viewport_coord_to_screen ( vp, &ne, &x2, &y2 ); | |
953 | if ( x1 < 0 ) x1 = 0; | |
954 | if ( y2 < 0 ) y2 = 0; | |
955 | vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc, | |
956 | FALSE, x1, y2, x2-x1, y1-y2 ); | |
957 | } | |
958 | } | |
959 | } | |
960 | } | |
961 | #endif | |
0c1044e9 | 962 | |
8c721f83 EB |
963 | /************************************************** |
964 | * SOURCES -- DOWNLOADING & IMPORTING TOOL * | |
965 | ************************************************** | |
966 | */ | |
0c1044e9 | 967 | |
8c721f83 EB |
968 | static void weak_ref_cb ( gpointer ptr, GObject * dead_vdl ) |
969 | { | |
970 | DEMDownloadParams *p = ptr; | |
971 | g_mutex_lock ( p->mutex ); | |
972 | p->vdl = NULL; | |
973 | g_mutex_unlock ( p->mutex ); | |
974 | } | |
0c1044e9 | 975 | |
8c721f83 EB |
976 | /* Try to add file full_path. |
977 | * full_path will be copied. | |
978 | * returns FALSE if file does not exists, TRUE otherwise. | |
979 | */ | |
980 | static gboolean dem_layer_add_file ( VikDEMLayer *vdl, const gchar *full_path ) | |
981 | { | |
45acf79e | 982 | if ( g_file_test(full_path, G_FILE_TEST_EXISTS ) == TRUE ) { |
b01c3429 | 983 | /* only load if file size is not 0 (not in progress) */ |
0c1044e9 | 984 | struct stat sb; |
8c721f83 | 985 | stat (full_path, &sb); |
0c1044e9 | 986 | if ( sb.st_size ) { |
8c721f83 EB |
987 | gchar *duped_path = g_strdup(full_path); |
988 | vdl->files = g_list_prepend ( vdl->files, duped_path ); | |
989 | a_dems_load ( duped_path ); | |
b01c3429 | 990 | g_debug("%s: %s", __FUNCTION__, duped_path); |
8c721f83 | 991 | vik_layer_emit_update ( VIK_LAYER(vdl) ); |
0c1044e9 | 992 | } |
8c721f83 EB |
993 | return TRUE; |
994 | } else | |
995 | return FALSE; | |
996 | } | |
997 | ||
998 | static void dem_download_thread ( DEMDownloadParams *p, gpointer threaddata ) | |
999 | { | |
1000 | if ( p->source == DEM_SOURCE_SRTM ) | |
1001 | srtm_dem_download_thread ( p, threaddata ); | |
1002 | #ifdef VIK_CONFIG_DEM24K | |
1003 | else if ( p->source == DEM_SOURCE_DEM24K ) | |
1004 | dem24k_dem_download_thread ( p, threaddata ); | |
1005 | #endif | |
1006 | ||
1007 | gdk_threads_enter(); | |
1008 | g_mutex_lock ( p->mutex ); | |
1009 | if ( p->vdl ) { | |
1010 | g_object_weak_unref ( G_OBJECT(p->vdl), weak_ref_cb, p ); | |
1011 | ||
1012 | if ( dem_layer_add_file ( p->vdl, p->dest ) ) | |
1013 | vik_layer_emit_update ( VIK_LAYER(p->vdl) ); | |
1014 | } | |
1015 | g_mutex_unlock ( p->mutex ); | |
1016 | gdk_threads_leave(); | |
1017 | } | |
1018 | ||
1019 | ||
1020 | static void free_dem_download_params ( DEMDownloadParams *p ) | |
1021 | { | |
1022 | g_mutex_free ( p->mutex ); | |
1023 | g_free ( p->dest ); | |
1024 | g_free ( p ); | |
1025 | } | |
1026 | ||
1027 | static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp) | |
1028 | { | |
1029 | return vvp; | |
1030 | } | |
1031 | ||
1032 | ||
1033 | static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ) | |
1034 | { | |
1035 | VikCoord coord; | |
1036 | struct LatLon ll; | |
1037 | ||
1038 | gchar *full_path; | |
1039 | gchar *dem_file = NULL; | |
1040 | ||
8c721f83 | 1041 | if ( vdl->source == DEM_SOURCE_NONE ) |
4c77d5e0 | 1042 | a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_LAYER(vdl), _("No download source selected. Edit layer properties.") ); |
8c721f83 EB |
1043 | |
1044 | vik_viewport_screen_to_coord ( vvp, event->x, event->y, &coord ); | |
1045 | vik_coord_to_latlon ( &coord, &ll ); | |
1046 | ||
1047 | ||
1048 | if ( vdl->source == DEM_SOURCE_SRTM ) | |
1049 | dem_file = srtm_lat_lon_to_dest_fn ( ll.lat, ll.lon ); | |
1050 | #ifdef VIK_CONFIG_DEM24K | |
1051 | else if ( vdl->source == DEM_SOURCE_DEM24K ) | |
1052 | dem_file = dem24k_lat_lon_to_dest_fn ( ll.lat, ll.lon ); | |
1053 | #endif | |
1054 | ||
1055 | if ( ! dem_file ) | |
1056 | return TRUE; | |
1057 | ||
1058 | full_path = g_strdup_printf("%s%s", MAPS_CACHE_DIR, dem_file ); | |
1059 | ||
b01c3429 | 1060 | g_debug("%s: %s", __FUNCTION__, full_path); |
8c721f83 EB |
1061 | |
1062 | // TODO: check if already in filelist | |
1063 | ||
1064 | if ( ! dem_layer_add_file(vdl, full_path) ) { | |
4c77d5e0 | 1065 | gchar *tmp = g_strdup_printf ( _("Downloading DEM %s"), dem_file ); |
8c721f83 EB |
1066 | DEMDownloadParams *p = g_malloc(sizeof(DEMDownloadParams)); |
1067 | p->dest = g_strdup(full_path); | |
1068 | p->lat = ll.lat; | |
1069 | p->lon = ll.lon; | |
1070 | p->vdl = vdl; | |
1071 | p->mutex = g_mutex_new(); | |
1072 | p->source = vdl->source; | |
1073 | g_object_weak_ref(G_OBJECT(p->vdl), weak_ref_cb, p ); | |
1074 | ||
1075 | a_background_thread ( VIK_GTK_WINDOW_FROM_LAYER(vdl), tmp, | |
1076 | (vik_thr_func) dem_download_thread, p, | |
1077 | (vik_thr_free_func) free_dem_download_params, NULL, 1 ); | |
0c1044e9 EB |
1078 | } |
1079 | ||
8c721f83 EB |
1080 | g_free ( dem_file ); |
1081 | g_free ( full_path ); | |
1082 | ||
0c1044e9 EB |
1083 | return TRUE; |
1084 | } | |
1085 | ||
1086 | static gboolean dem_layer_download_click ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ) | |
1087 | { | |
1088 | /* choose & keep track of cache dir | |
1089 | * download in background thread | |
1090 | * download over area */ | |
1091 | return TRUE; | |
1092 | } | |
1093 | ||
1094 |