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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 | ||
7e74e26b | 72 | #define UNUSED_LINE_THICKNESS 3 |
0c1044e9 | 73 | |
e6c9ae37 | 74 | static const gchar* dem_layer_tooltip( VikDEMLayer *vdl ); |
ad0a8c2d EB |
75 | static void dem_layer_marshall( VikDEMLayer *vdl, guint8 **data, gint *len ); |
76 | static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp ); | |
158b3642 RN |
77 | static gboolean dem_layer_set_param ( VikDEMLayer *vdl, guint16 id, VikLayerParamData data, VikViewport *vp, gboolean is_file_operation ); |
78 | static VikLayerParamData dem_layer_get_param ( VikDEMLayer *vdl, guint16 id, gboolean is_file_operation ); | |
07059501 | 79 | static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file ); |
8c721f83 EB |
80 | static void srtm_draw_existence ( VikViewport *vp ); |
81 | ||
82 | #ifdef VIK_CONFIG_DEM24K | |
83 | static void dem24k_draw_existence ( VikViewport *vp ); | |
84 | #endif | |
ad0a8c2d | 85 | |
0cabb401 | 86 | /* Upped upper limit incase units are feet */ |
ad0a8c2d | 87 | static VikLayerParamScale param_scales[] = { |
0cabb401 RN |
88 | { 0, 30000, 10, 1 }, |
89 | { 1, 30000, 10, 1 }, | |
ad0a8c2d EB |
90 | }; |
91 | ||
8c721f83 EB |
92 | static gchar *params_source[] = { |
93 | "SRTM Global 90m (3 arcsec)", | |
94 | #ifdef VIK_CONFIG_DEM24K | |
95 | "USA 10m (USGS 24k)", | |
96 | #endif | |
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 | |
8c721f83 EB |
110 | }; |
111 | ||
c07088dd DRP |
112 | enum { DEM_TYPE_HEIGHT = 0, |
113 | DEM_TYPE_GRADIENT, | |
114 | DEM_TYPE_NONE, | |
115 | }; | |
116 | ||
ad0a8c2d | 117 | static VikLayerParam dem_layer_params[] = { |
4c77d5e0 GB |
118 | { "files", VIK_LAYER_PARAM_STRING_LIST, VIK_LAYER_GROUP_NONE, N_("DEM Files:"), VIK_LAYER_WIDGET_FILELIST }, |
119 | { "source", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Download Source:"), VIK_LAYER_WIDGET_RADIOGROUP_STATIC, params_source, NULL }, | |
7e74e26b | 120 | { "color", VIK_LAYER_PARAM_COLOR, VIK_LAYER_GROUP_NONE, N_("Min Elev Color:"), VIK_LAYER_WIDGET_COLOR, 0 }, |
c07088dd | 121 | { "type", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Type:"), VIK_LAYER_WIDGET_RADIOGROUP_STATIC, params_type, NULL }, |
4c77d5e0 GB |
122 | { "min_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Min Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 }, |
123 | { "max_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Max Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 }, | |
ad0a8c2d EB |
124 | }; |
125 | ||
8c721f83 | 126 | |
7e74e26b | 127 | enum { PARAM_FILES=0, PARAM_SOURCE, PARAM_COLOR, PARAM_TYPE, PARAM_MIN_ELEV, PARAM_MAX_ELEV, NUM_PARAMS }; |
8c721f83 | 128 | |
0c1044e9 EB |
129 | static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp); |
130 | static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ); | |
131 | static gboolean dem_layer_download_click ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ); | |
132 | ||
133 | static VikToolInterface dem_tools[] = { | |
4c77d5e0 | 134 | { N_("DEM Download/Import"), (VikToolConstructorFunc) dem_layer_download_create, NULL, NULL, NULL, |
bce3a7b0 | 135 | (VikToolMouseFunc) dem_layer_download_click, NULL, (VikToolMouseFunc) dem_layer_download_release, |
5bfafde9 | 136 | (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_demdl_pixbuf }, |
0c1044e9 EB |
137 | }; |
138 | ||
139 | ||
7e74e26b RN |
140 | /* HEIGHT COLORS |
141 | The first entry is blue for a default 'sea' colour, | |
142 | however the value used by the corresponding gc can be configured as part of the DEM layer properties. | |
143 | The other colours, shaded from brown to white are used to give an indication of height. | |
ad0a8c2d | 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 | 166 | static gchar *dem_gradient_colors[] = { |
0251a183 | 167 | "#AAAAAA", |
c07088dd DRP |
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, | |
9da7faf2 | 214 | (VikLayerFuncSublayerTooltip) NULL, |
e6c9ae37 | 215 | (VikLayerFuncLayerTooltip) dem_layer_tooltip, |
a5dcfdb7 | 216 | (VikLayerFuncLayerSelected) NULL, |
ad0a8c2d | 217 | |
ad0a8c2d EB |
218 | (VikLayerFuncMarshall) dem_layer_marshall, |
219 | (VikLayerFuncUnmarshall) dem_layer_unmarshall, | |
220 | ||
221 | (VikLayerFuncSetParam) dem_layer_set_param, | |
222 | (VikLayerFuncGetParam) dem_layer_get_param, | |
223 | ||
224 | (VikLayerFuncReadFileData) NULL, | |
225 | (VikLayerFuncWriteFileData) NULL, | |
226 | ||
227 | (VikLayerFuncDeleteItem) NULL, | |
d5874ef9 | 228 | (VikLayerFuncCutItem) NULL, |
ad0a8c2d EB |
229 | (VikLayerFuncCopyItem) NULL, |
230 | (VikLayerFuncPasteItem) NULL, | |
231 | (VikLayerFuncFreeCopiedItem) NULL, | |
232 | (VikLayerFuncDragDropRequest) NULL, | |
77ad64fa RN |
233 | |
234 | (VikLayerFuncSelectClick) NULL, | |
08f14055 RN |
235 | (VikLayerFuncSelectMove) NULL, |
236 | (VikLayerFuncSelectRelease) NULL, | |
e46f259a | 237 | (VikLayerFuncSelectedViewportMenu) NULL, |
ad0a8c2d EB |
238 | }; |
239 | ||
240 | struct _VikDEMLayer { | |
241 | VikLayer vl; | |
ad0a8c2d | 242 | GdkGC **gcs; |
c07088dd | 243 | GdkGC **gcsgradient; |
ad0a8c2d | 244 | GList *files; |
415302f4 | 245 | gdouble min_elev; |
ad0a8c2d | 246 | gdouble max_elev; |
7e74e26b | 247 | GdkGC *color; |
8c721f83 | 248 | guint source; |
c07088dd | 249 | guint type; |
ad0a8c2d EB |
250 | }; |
251 | ||
252 | GType vik_dem_layer_get_type () | |
253 | { | |
254 | static GType vdl_type = 0; | |
255 | ||
256 | if (!vdl_type) | |
257 | { | |
258 | static const GTypeInfo vdl_info = | |
259 | { | |
260 | sizeof (VikDEMLayerClass), | |
261 | NULL, /* base_init */ | |
262 | NULL, /* base_finalize */ | |
263 | NULL, /* class init */ | |
264 | NULL, /* class_finalize */ | |
265 | NULL, /* class_data */ | |
266 | sizeof (VikDEMLayer), | |
267 | 0, | |
268 | NULL /* instance init */ | |
269 | }; | |
270 | vdl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikDEMLayer", &vdl_info, 0 ); | |
271 | } | |
272 | ||
273 | return vdl_type; | |
274 | } | |
275 | ||
e6c9ae37 RN |
276 | static const gchar* dem_layer_tooltip( VikDEMLayer *vdl ) |
277 | { | |
278 | static gchar tmp_buf[100]; | |
279 | g_snprintf (tmp_buf, sizeof(tmp_buf), _("Number of files: %d"), g_list_length (vdl->files)); | |
280 | return tmp_buf; | |
281 | } | |
282 | ||
ad0a8c2d EB |
283 | static void dem_layer_marshall( VikDEMLayer *vdl, guint8 **data, gint *len ) |
284 | { | |
285 | vik_layer_marshall_params ( VIK_LAYER(vdl), data, len ); | |
286 | } | |
287 | ||
288 | static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp ) | |
289 | { | |
fa86f1c0 EB |
290 | VikDEMLayer *rv = vik_dem_layer_new (); |
291 | gint i; | |
292 | ||
293 | /* TODO: share GCS between layers */ | |
c07088dd | 294 | for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) |
7e74e26b | 295 | rv->gcs[i] = vik_viewport_new_gc ( vvp, dem_height_colors[i], UNUSED_LINE_THICKNESS ); |
c07088dd DRP |
296 | |
297 | for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ ) | |
7e74e26b | 298 | rv->gcsgradient[i] = vik_viewport_new_gc ( vvp, dem_gradient_colors[i], UNUSED_LINE_THICKNESS ); |
fa86f1c0 | 299 | |
ad0a8c2d EB |
300 | vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp ); |
301 | return rv; | |
302 | } | |
303 | ||
29392f59 RN |
304 | /* Structure for DEM data used in background thread */ |
305 | typedef struct { | |
306 | VikDEMLayer *vdl; | |
307 | } dem_load_thread_data; | |
308 | ||
309 | /* | |
310 | * Function for starting the DEM file loading as a background thread | |
311 | */ | |
312 | static int dem_layer_load_list_thread ( dem_load_thread_data *dltd, gpointer threaddata ) | |
313 | { | |
314 | int result = 0; // Default to good | |
315 | // Actual Load | |
316 | if ( a_dems_load_list ( &(dltd->vdl->files), threaddata ) ) { | |
317 | // Thread cancelled | |
318 | result = -1; | |
319 | } | |
320 | ||
321 | // ATM as each file is processed the screen is not updated (no mechanism exposed to a_dems_load_list) | |
322 | // Thus force draw only at the end, as loading is complete/aborted | |
323 | gdk_threads_enter(); | |
94595b61 RN |
324 | // Test is helpful to prevent Gtk-CRITICAL warnings if the program is exitted whilst loading |
325 | if ( IS_VIK_LAYER(dltd->vdl) ) | |
326 | vik_layer_emit_update ( VIK_LAYER(dltd->vdl) ); | |
29392f59 RN |
327 | gdk_threads_leave(); |
328 | ||
329 | return result; | |
330 | } | |
331 | ||
332 | static void dem_layer_thread_data_free ( dem_load_thread_data *data ) | |
333 | { | |
334 | // Simple release | |
335 | g_free ( data ); | |
336 | } | |
337 | ||
338 | static void dem_layer_thread_cancel ( dem_load_thread_data *data ) | |
339 | { | |
340 | // Abort loading | |
341 | // Instead of freeing the list, leave it as partially processed | |
342 | // Thus we can see/use what was done | |
343 | } | |
344 | ||
158b3642 | 345 | gboolean dem_layer_set_param ( VikDEMLayer *vdl, guint16 id, VikLayerParamData data, VikViewport *vp, gboolean is_file_operation ) |
ad0a8c2d EB |
346 | { |
347 | switch ( id ) | |
348 | { | |
7e74e26b | 349 | case PARAM_COLOR: gdk_gc_set_rgb_fg_color ( vdl->gcs[0], &(data.c) ); break; |
8c721f83 | 350 | case PARAM_SOURCE: vdl->source = data.u; break; |
c07088dd | 351 | case PARAM_TYPE: vdl->type = data.u; break; |
0cabb401 RN |
352 | case PARAM_MIN_ELEV: |
353 | /* Convert to store internally | |
354 | NB file operation always in internal units (metres) */ | |
355 | if (!is_file_operation && a_vik_get_units_height () == VIK_UNITS_HEIGHT_FEET ) | |
ab1e0693 | 356 | vdl->min_elev = VIK_FEET_TO_METERS(data.d); |
0cabb401 RN |
357 | else |
358 | vdl->min_elev = data.d; | |
359 | break; | |
360 | case PARAM_MAX_ELEV: | |
361 | /* Convert to store internally | |
362 | NB file operation always in internal units (metres) */ | |
363 | if (!is_file_operation && a_vik_get_units_height () == VIK_UNITS_HEIGHT_FEET ) | |
ab1e0693 | 364 | vdl->max_elev = VIK_FEET_TO_METERS(data.d); |
0cabb401 RN |
365 | else |
366 | vdl->max_elev = data.d; | |
367 | break; | |
29392f59 RN |
368 | case PARAM_FILES: |
369 | { | |
370 | // Clear out old settings - if any commonalities with new settings they will have to be read again | |
371 | a_dems_list_free ( vdl->files ); | |
372 | // Set file list so any other intermediate screen drawing updates will show currently loaded DEMs by the working thread | |
373 | vdl->files = data.sl; | |
374 | // Thread Load | |
375 | dem_load_thread_data *dltd = g_malloc ( sizeof(dem_load_thread_data) ); | |
376 | dltd->vdl = vdl; | |
377 | dltd->vdl->files = data.sl; | |
378 | ||
379 | a_background_thread ( VIK_GTK_WINDOW_FROM_WIDGET(vp), | |
380 | _("DEM Loading"), | |
381 | (vik_thr_func) dem_layer_load_list_thread, | |
382 | dltd, | |
383 | (vik_thr_free_func) dem_layer_thread_data_free, | |
384 | (vik_thr_free_func) dem_layer_thread_cancel, | |
385 | g_list_length ( data.sl ) ); // Number of DEM files | |
386 | break; | |
387 | } | |
ad0a8c2d EB |
388 | } |
389 | return TRUE; | |
390 | } | |
391 | ||
158b3642 | 392 | static VikLayerParamData dem_layer_get_param ( VikDEMLayer *vdl, guint16 id, gboolean is_file_operation ) |
ad0a8c2d EB |
393 | { |
394 | VikLayerParamData rv; | |
395 | switch ( id ) | |
396 | { | |
397 | case PARAM_FILES: rv.sl = vdl->files; break; | |
8c721f83 | 398 | case PARAM_SOURCE: rv.u = vdl->source; break; |
c07088dd | 399 | case PARAM_TYPE: rv.u = vdl->type; break; |
7e74e26b | 400 | case PARAM_COLOR: vik_gc_get_fg_color ( vdl->gcs[0], &(rv.c) ); break; |
0cabb401 RN |
401 | case PARAM_MIN_ELEV: |
402 | /* Convert for display in desired units | |
403 | NB file operation always in internal units (metres) */ | |
404 | if (!is_file_operation && a_vik_get_units_height () == VIK_UNITS_HEIGHT_FEET ) | |
6c20e59a | 405 | rv.d = VIK_METERS_TO_FEET(vdl->min_elev); |
0cabb401 RN |
406 | else |
407 | rv.d = vdl->min_elev; | |
408 | break; | |
409 | case PARAM_MAX_ELEV: | |
410 | /* Convert for display in desired units | |
411 | NB file operation always in internal units (metres) */ | |
412 | if (!is_file_operation && a_vik_get_units_height () == VIK_UNITS_HEIGHT_FEET ) | |
6c20e59a | 413 | rv.d = VIK_METERS_TO_FEET(vdl->max_elev); |
0cabb401 RN |
414 | else |
415 | rv.d = vdl->max_elev; | |
416 | break; | |
ad0a8c2d EB |
417 | } |
418 | return rv; | |
419 | } | |
420 | ||
07059501 | 421 | static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file ) |
ad0a8c2d | 422 | { |
7e74e26b | 423 | /* nothing ATM, but keep in case it's needed the future */ |
ad0a8c2d EB |
424 | } |
425 | ||
426 | VikDEMLayer *vik_dem_layer_new ( ) | |
427 | { | |
428 | VikDEMLayer *vdl = VIK_DEM_LAYER ( g_object_new ( VIK_DEM_LAYER_TYPE, NULL ) ); | |
fa86f1c0 | 429 | |
ad0a8c2d EB |
430 | vik_layer_init ( VIK_LAYER(vdl), VIK_LAYER_DEM ); |
431 | ||
432 | vdl->files = NULL; | |
433 | ||
c07088dd DRP |
434 | vdl->gcs = g_malloc(sizeof(GdkGC *)*DEM_N_HEIGHT_COLORS); |
435 | vdl->gcsgradient = g_malloc(sizeof(GdkGC *)*DEM_N_GRADIENT_COLORS); | |
fa86f1c0 | 436 | /* make new gcs only if we need it (copy layer -> use old) */ |
ad0a8c2d | 437 | |
415302f4 | 438 | vdl->min_elev = 0.0; |
ad0a8c2d | 439 | vdl->max_elev = 1000.0; |
8c721f83 | 440 | vdl->source = DEM_SOURCE_SRTM; |
c07088dd | 441 | vdl->type = DEM_TYPE_HEIGHT; |
ad0a8c2d EB |
442 | return vdl; |
443 | } | |
444 | ||
445 | ||
f9518bc9 DRP |
446 | static inline guint16 get_height_difference(gint16 elev, gint16 new_elev) |
447 | { | |
448 | if(new_elev == VIK_DEM_INVALID_ELEVATION) | |
449 | return 0; | |
450 | else | |
451 | return abs(new_elev - elev); | |
452 | } | |
453 | ||
0c1044e9 | 454 | |
ad0a8c2d EB |
455 | static void vik_dem_layer_draw_dem ( VikDEMLayer *vdl, VikViewport *vp, VikDEM *dem ) |
456 | { | |
f9518bc9 | 457 | VikDEMColumn *column, *prevcolumn, *nextcolumn; |
ad0a8c2d EB |
458 | |
459 | struct LatLon dem_northeast, dem_southwest; | |
f9518bc9 | 460 | gdouble max_lat, max_lon, min_lat, min_lon; |
ad0a8c2d | 461 | |
ad0a8c2d EB |
462 | /**** Check if viewport and DEM data overlap ****/ |
463 | ||
464 | /* get min, max lat/lon of viewport */ | |
0c1044e9 | 465 | vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon ); |
ad0a8c2d EB |
466 | |
467 | /* get min, max lat/lon of DEM data */ | |
468 | if ( dem->horiz_units == VIK_DEM_HORIZ_LL_ARCSECONDS ) { | |
469 | dem_northeast.lat = dem->max_north / 3600.0; | |
470 | dem_northeast.lon = dem->max_east / 3600.0; | |
471 | dem_southwest.lat = dem->min_north / 3600.0; | |
472 | dem_southwest.lon = dem->min_east / 3600.0; | |
473 | } else if ( dem->horiz_units == VIK_DEM_HORIZ_UTM_METERS ) { | |
474 | struct UTM dem_northeast_utm, dem_southwest_utm; | |
475 | dem_northeast_utm.northing = dem->max_north; | |
476 | dem_northeast_utm.easting = dem->max_east; | |
477 | dem_southwest_utm.northing = dem->min_north; | |
478 | dem_southwest_utm.easting = dem->min_east; | |
479 | dem_northeast_utm.zone = dem_southwest_utm.zone = dem->utm_zone; | |
480 | dem_northeast_utm.letter = dem_southwest_utm.letter = dem->utm_letter; | |
481 | ||
482 | a_coords_utm_to_latlon(&dem_northeast_utm, &dem_northeast); | |
483 | a_coords_utm_to_latlon(&dem_southwest_utm, &dem_southwest); | |
484 | } | |
485 | ||
486 | if ( (max_lat > dem_northeast.lat && min_lat > dem_northeast.lat) || | |
487 | (max_lat < dem_southwest.lat && min_lat < dem_southwest.lat) ) | |
488 | return; | |
489 | else if ( (max_lon > dem_northeast.lon && min_lon > dem_northeast.lon) || | |
490 | (max_lon < dem_southwest.lon && min_lon < dem_southwest.lon) ) | |
491 | return; | |
492 | /* else they overlap */ | |
493 | ||
494 | /**** End Overlap Check ****/ | |
0c1044e9 EB |
495 | /* boxes to show where we have DEM instead of actually drawing the DEM. |
496 | * useful if we want to see what areas we have coverage for (if we want | |
497 | * to get elevation data for a track) but don't want to cover the map. | |
498 | */ | |
499 | ||
500 | #if 0 | |
501 | /* draw a box if a DEM is loaded. in future I'd like to add an option for this | |
502 | * this is useful if we want to see what areas we have dem for but don't want to | |
503 | * cover the map (or maybe we just need translucent DEM?) */ | |
504 | { | |
505 | VikCoord demne, demsw; | |
506 | gint x1, y1, x2, y2; | |
507 | vik_coord_load_from_latlon(&demne, vik_viewport_get_coord_mode(vp), &dem_northeast); | |
508 | vik_coord_load_from_latlon(&demsw, vik_viewport_get_coord_mode(vp), &dem_southwest); | |
509 | ||
510 | vik_viewport_coord_to_screen ( vp, &demne, &x1, &y1 ); | |
511 | vik_viewport_coord_to_screen ( vp, &demsw, &x2, &y2 ); | |
512 | ||
513 | if ( x1 > vik_viewport_get_width(vp) ) x1=vik_viewport_get_width(vp); | |
514 | if ( y2 > vik_viewport_get_height(vp) ) y2=vik_viewport_get_height(vp); | |
515 | if ( x2 < 0 ) x2 = 0; | |
516 | if ( y1 < 0 ) y1 = 0; | |
517 | vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc, | |
518 | FALSE, x2, y1, x1-x2, y2-y1 ); | |
0c1044e9 EB |
519 | return; |
520 | } | |
521 | #endif | |
ad0a8c2d EB |
522 | |
523 | if ( dem->horiz_units == VIK_DEM_HORIZ_LL_ARCSECONDS ) { | |
524 | VikCoord tmp; /* TODO: don't use coord_load_from_latlon, especially if in latlon drawing mode */ | |
525 | ||
526 | gdouble max_lat_as, max_lon_as, min_lat_as, min_lon_as; | |
527 | gdouble start_lat_as, end_lat_as, start_lon_as, end_lon_as; | |
528 | ||
529 | gdouble start_lat, end_lat, start_lon, end_lon; | |
530 | ||
531 | struct LatLon counter; | |
532 | ||
533 | guint x, y, start_x, start_y; | |
534 | ||
535 | gint16 elev; | |
536 | ||
f9518bc9 | 537 | guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 80 ); /* todo: smarter calculation. */ |
ad0a8c2d EB |
538 | |
539 | gdouble nscale_deg = dem->north_scale / ((gdouble) 3600); | |
540 | gdouble escale_deg = dem->east_scale / ((gdouble) 3600); | |
541 | ||
542 | max_lat_as = max_lat * 3600; | |
543 | min_lat_as = min_lat * 3600; | |
544 | max_lon_as = max_lon * 3600; | |
545 | min_lon_as = min_lon * 3600; | |
546 | ||
547 | start_lat_as = MAX(min_lat_as, dem->min_north); | |
548 | end_lat_as = MIN(max_lat_as, dem->max_north); | |
549 | start_lon_as = MAX(min_lon_as, dem->min_east); | |
550 | end_lon_as = MIN(max_lon_as, dem->max_east); | |
551 | ||
552 | start_lat = floor(start_lat_as / dem->north_scale) * nscale_deg; | |
553 | end_lat = ceil (end_lat_as / dem->north_scale) * nscale_deg; | |
554 | start_lon = floor(start_lon_as / dem->east_scale) * escale_deg; | |
555 | end_lon = ceil (end_lon_as / dem->east_scale) * escale_deg; | |
556 | ||
557 | vik_dem_east_north_to_xy ( dem, start_lon_as, start_lat_as, &start_x, &start_y ); | |
f9518bc9 DRP |
558 | guint gradient_skip_factor = 1; |
559 | if(vdl->type == DEM_TYPE_GRADIENT) | |
560 | gradient_skip_factor = skip_factor; | |
ad0a8c2d | 561 | |
415302f4 EB |
562 | /* verify sane elev interval */ |
563 | if ( vdl->max_elev <= vdl->min_elev ) | |
564 | vdl->max_elev = vdl->min_elev + 1; | |
565 | ||
f9518bc9 DRP |
566 | 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 ) { |
567 | // NOTE: ( counter.lon <= end_lon + ESCALE_DEG*SKIP_FACTOR ) is neccessary so in high zoom modes, | |
568 | // the leftmost column does also get drawn, if the center point is out of viewport. | |
569 | if ( x >= 0 && x < dem->n_columns ) { | |
ad0a8c2d | 570 | column = g_ptr_array_index ( dem->columns, x ); |
f9518bc9 DRP |
571 | // get previous and next column. catch out-of-bound. |
572 | gint32 new_x = x; | |
573 | new_x -= gradient_skip_factor; | |
574 | if(new_x < 1) | |
575 | prevcolumn = g_ptr_array_index ( dem->columns, x+1); | |
576 | else | |
577 | prevcolumn = g_ptr_array_index ( dem->columns, new_x); | |
578 | new_x = x; | |
579 | new_x += gradient_skip_factor; | |
580 | if(new_x >= dem->n_columns) | |
581 | nextcolumn = g_ptr_array_index ( dem->columns, x-1); | |
582 | else | |
583 | nextcolumn = g_ptr_array_index ( dem->columns, new_x); | |
c07088dd | 584 | |
ad0a8c2d EB |
585 | for ( y=start_y, counter.lat = start_lat; counter.lat <= end_lat; counter.lat += nscale_deg * skip_factor, y += skip_factor ) { |
586 | if ( y > column->n_points ) | |
587 | break; | |
f9518bc9 | 588 | |
ad0a8c2d | 589 | elev = column->points[y]; |
415302f4 | 590 | |
f9518bc9 DRP |
591 | // calculate bounding box for drawing |
592 | gint box_x, box_y, box_width, box_height; | |
593 | struct LatLon box_c; | |
594 | box_c = counter; | |
595 | box_c.lat += (nscale_deg * skip_factor)/2; | |
596 | box_c.lon -= (escale_deg * skip_factor)/2; | |
597 | vik_coord_load_from_latlon(&tmp, vik_viewport_get_coord_mode(vp), &box_c); | |
598 | vik_viewport_coord_to_screen(vp, &tmp, &box_x, &box_y); | |
599 | // catch box at borders | |
600 | if(box_x < 0) | |
601 | box_x = 0; | |
602 | if(box_y < 0) | |
603 | box_y = 0; | |
604 | box_c.lat -= nscale_deg * skip_factor; | |
605 | box_c.lon += escale_deg * skip_factor; | |
606 | vik_coord_load_from_latlon(&tmp, vik_viewport_get_coord_mode(vp), &box_c); | |
607 | vik_viewport_coord_to_screen(vp, &tmp, &box_width, &box_height); | |
608 | box_width -= box_x; | |
609 | box_height -= box_y; | |
610 | // catch box at borders | |
611 | if(box_width < 0 || box_height < 0) | |
612 | continue; // skip this. this is out of our viewport anyway. FIXME: why? | |
613 | ||
7e74e26b | 614 | gboolean below_minimum = FALSE; |
f9518bc9 | 615 | if(vdl->type == DEM_TYPE_HEIGHT) { |
7e74e26b | 616 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev ) { |
104f8c15 RN |
617 | // Prevent 'elev - vdl->min_elev' from being negative so can safely use as array index |
618 | elev = ceil ( vdl->min_elev ); | |
7e74e26b RN |
619 | below_minimum = TRUE; |
620 | } | |
f9518bc9 | 621 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev ) |
104f8c15 | 622 | elev = vdl->max_elev; |
f9518bc9 | 623 | } |
415302f4 | 624 | |
ad0a8c2d | 625 | { |
f9518bc9 DRP |
626 | if(box_width < 0 || box_height < 0) // FIXME: why does this happen? |
627 | continue; | |
628 | ||
629 | if(vdl->type == DEM_TYPE_GRADIENT) { | |
630 | if( elev == VIK_DEM_INVALID_ELEVATION ) { | |
631 | /* don't draw it */ | |
632 | } else { | |
633 | // calculate and sum gradient in all directions | |
634 | gint16 change = 0; | |
635 | gint32 new_y; | |
636 | ||
637 | // calculate gradient from height points all around the current one | |
638 | new_y = y - gradient_skip_factor; | |
639 | if(new_y < 0) | |
640 | new_y = y; | |
641 | change += get_height_difference(elev, prevcolumn->points[new_y]); | |
642 | change += get_height_difference(elev, column->points[new_y]); | |
643 | change += get_height_difference(elev, nextcolumn->points[new_y]); | |
644 | ||
645 | change += get_height_difference(elev, prevcolumn->points[y]); | |
646 | change += get_height_difference(elev, nextcolumn->points[y]); | |
647 | ||
648 | new_y = y + gradient_skip_factor; | |
649 | if(new_y >= column->n_points) | |
650 | new_y = y; | |
651 | change += get_height_difference(elev, prevcolumn->points[new_y]); | |
652 | change += get_height_difference(elev, column->points[new_y]); | |
653 | change += get_height_difference(elev, nextcolumn->points[new_y]); | |
654 | ||
655 | change = change / ((skip_factor > 1) ? log(skip_factor) : 0.55); // FIXME: better calc. | |
656 | ||
657 | if(change < vdl->min_elev) | |
104f8c15 RN |
658 | // Prevent 'change - vdl->min_elev' from being negative so can safely use as array index |
659 | change = ceil ( vdl->min_elev ); | |
f9518bc9 DRP |
660 | |
661 | if(change > vdl->max_elev) | |
662 | change = vdl->max_elev; | |
663 | ||
664 | // void vik_viewport_draw_rectangle ( VikViewport *vvp, GdkGC *gc, gboolean filled, gint x1, gint y1, gint x2, gint y2 ); | |
104f8c15 | 665 | 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); |
f9518bc9 | 666 | } |
c07088dd | 667 | } else { |
f9518bc9 DRP |
668 | if(vdl->type == DEM_TYPE_HEIGHT) { |
669 | if ( elev == VIK_DEM_INVALID_ELEVATION ) | |
670 | ; /* don't draw it */ | |
7e74e26b RN |
671 | else if ( elev <= 0 || below_minimum ) |
672 | /* If 'sea' colour or below the defined mininum draw in the configurable colour */ | |
f9518bc9 DRP |
673 | vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, box_x, box_y, box_width, box_height); |
674 | else | |
104f8c15 | 675 | 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); |
f9518bc9 DRP |
676 | } |
677 | } | |
ad0a8c2d EB |
678 | } |
679 | } /* for y= */ | |
680 | } | |
681 | } /* for x= */ | |
682 | } else if ( dem->horiz_units == VIK_DEM_HORIZ_UTM_METERS ) { | |
683 | gdouble max_nor, max_eas, min_nor, min_eas; | |
684 | gdouble start_nor, start_eas, end_nor, end_eas; | |
685 | ||
686 | gint16 elev; | |
687 | ||
688 | guint x, y, start_x, start_y; | |
689 | ||
690 | VikCoord tmp; /* TODO: don't use coord_load_from_latlon, especially if in latlon drawing mode */ | |
691 | struct UTM counter; | |
692 | ||
693 | guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 10 ); /* todo: smarter calculation. */ | |
694 | ||
0c1044e9 EB |
695 | VikCoord tleft, tright, bleft, bright; |
696 | ||
697 | vik_viewport_screen_to_coord ( vp, 0, 0, &tleft ); | |
698 | vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &tright ); | |
699 | vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &bleft ); | |
700 | vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &bright ); | |
701 | ||
702 | ||
ad0a8c2d EB |
703 | vik_coord_convert(&tleft, VIK_COORD_UTM); |
704 | vik_coord_convert(&tright, VIK_COORD_UTM); | |
705 | vik_coord_convert(&bleft, VIK_COORD_UTM); | |
706 | vik_coord_convert(&bright, VIK_COORD_UTM); | |
707 | ||
708 | max_nor = MAX(tleft.north_south, tright.north_south); | |
709 | min_nor = MIN(bleft.north_south, bright.north_south); | |
710 | max_eas = MAX(bright.east_west, tright.east_west); | |
711 | min_eas = MIN(bleft.east_west, tleft.east_west); | |
712 | ||
713 | start_nor = MAX(min_nor, dem->min_north); | |
714 | end_nor = MIN(max_nor, dem->max_north); | |
715 | if ( tleft.utm_zone == dem->utm_zone && bleft.utm_zone == dem->utm_zone | |
716 | && (tleft.utm_letter >= 'N') == (dem->utm_letter >= 'N') | |
717 | && (bleft.utm_letter >= 'N') == (dem->utm_letter >= 'N') ) /* if the utm zones/hemispheres are different, min_eas will be bogus */ | |
718 | start_eas = MAX(min_eas, dem->min_east); | |
719 | else | |
720 | start_eas = dem->min_east; | |
721 | if ( tright.utm_zone == dem->utm_zone && bright.utm_zone == dem->utm_zone | |
722 | && (tright.utm_letter >= 'N') == (dem->utm_letter >= 'N') | |
723 | && (bright.utm_letter >= 'N') == (dem->utm_letter >= 'N') ) /* if the utm zones/hemispheres are different, min_eas will be bogus */ | |
724 | end_eas = MIN(max_eas, dem->max_east); | |
725 | else | |
726 | end_eas = dem->max_east; | |
727 | ||
728 | start_nor = floor(start_nor / dem->north_scale) * dem->north_scale; | |
729 | end_nor = ceil (end_nor / dem->north_scale) * dem->north_scale; | |
730 | start_eas = floor(start_eas / dem->east_scale) * dem->east_scale; | |
731 | end_eas = ceil (end_eas / dem->east_scale) * dem->east_scale; | |
732 | ||
733 | vik_dem_east_north_to_xy ( dem, start_eas, start_nor, &start_x, &start_y ); | |
734 | ||
735 | /* TODO: why start_x and start_y are -1 -- rounding error from above? */ | |
736 | ||
737 | counter.zone = dem->utm_zone; | |
738 | counter.letter = dem->utm_letter; | |
739 | ||
740 | for ( x=start_x, counter.easting = start_eas; counter.easting <= end_eas; counter.easting += dem->east_scale * skip_factor, x += skip_factor ) { | |
741 | if ( x > 0 && x < dem->n_columns ) { | |
742 | column = g_ptr_array_index ( dem->columns, x ); | |
743 | for ( y=start_y, counter.northing = start_nor; counter.northing <= end_nor; counter.northing += dem->north_scale * skip_factor, y += skip_factor ) { | |
744 | if ( y > column->n_points ) | |
745 | continue; | |
746 | elev = column->points[y]; | |
415302f4 EB |
747 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev ) |
748 | elev=vdl->min_elev; | |
749 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev ) | |
750 | elev=vdl->max_elev; | |
751 | ||
ad0a8c2d EB |
752 | { |
753 | gint a, b; | |
754 | vik_coord_load_from_utm(&tmp, vik_viewport_get_coord_mode(vp), &counter); | |
755 | vik_viewport_coord_to_screen(vp, &tmp, &a, &b); | |
756 | if ( elev == VIK_DEM_INVALID_ELEVATION ) | |
757 | ; /* don't draw it */ | |
758 | else if ( elev <= 0 ) | |
f9518bc9 | 759 | vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, a-1, b-1, 2, 2 ); |
ad0a8c2d | 760 | else |
f9518bc9 | 761 | 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 |
762 | } |
763 | } /* for y= */ | |
764 | } | |
765 | } /* for x= */ | |
766 | } | |
767 | } | |
768 | ||
0c1044e9 EB |
769 | /* return the continent for the specified lat, lon */ |
770 | /* TODO */ | |
0e25c0d0 | 771 | static const gchar *srtm_continent_dir ( gint lat, gint lon ) |
0c1044e9 | 772 | { |
0e25c0d0 QT |
773 | extern const char *_srtm_continent_data[]; |
774 | static GHashTable *srtm_continent = NULL; | |
775 | const gchar *continent; | |
776 | gchar name[16]; | |
777 | ||
778 | if (!srtm_continent) { | |
779 | const gchar **s; | |
780 | ||
781 | srtm_continent = g_hash_table_new(g_str_hash, g_str_equal); | |
782 | s = _srtm_continent_data; | |
783 | while (*s != (gchar *)-1) { | |
784 | continent = *s++; | |
785 | while (*s) { | |
0654760a | 786 | g_hash_table_insert(srtm_continent, (gpointer) *s, (gpointer) continent); |
0e25c0d0 QT |
787 | s++; |
788 | } | |
789 | s++; | |
790 | } | |
791 | } | |
792 | g_snprintf(name, sizeof(name), "%c%02d%c%03d", | |
793 | (lat >= 0) ? 'N' : 'S', ABS(lat), | |
794 | (lon >= 0) ? 'E' : 'W', ABS(lon)); | |
795 | ||
796 | return(g_hash_table_lookup(srtm_continent, name)); | |
0c1044e9 EB |
797 | } |
798 | ||
ad0a8c2d EB |
799 | void vik_dem_layer_draw ( VikDEMLayer *vdl, gpointer data ) |
800 | { | |
801 | VikViewport *vp = (VikViewport *) data; | |
802 | GList *dems_iter = vdl->files; | |
803 | VikDEM *dem; | |
0c1044e9 | 804 | |
0c1044e9 EB |
805 | |
806 | /* search for SRTM3 90m */ | |
8c721f83 EB |
807 | |
808 | if ( vdl->source == DEM_SOURCE_SRTM ) | |
809 | srtm_draw_existence ( vp ); | |
810 | #ifdef VIK_CONFIG_DEM24K | |
811 | else if ( vdl->source == DEM_SOURCE_DEM24K ) | |
812 | dem24k_draw_existence ( vp ); | |
813 | #endif | |
0c1044e9 | 814 | |
ad0a8c2d EB |
815 | while ( dems_iter ) { |
816 | dem = a_dems_get ( (const char *) (dems_iter->data) ); | |
817 | if ( dem ) | |
818 | vik_dem_layer_draw_dem ( vdl, vp, dem ); | |
819 | dems_iter = dems_iter->next; | |
820 | } | |
821 | } | |
822 | ||
823 | void vik_dem_layer_free ( VikDEMLayer *vdl ) | |
824 | { | |
fa86f1c0 | 825 | gint i; |
ad0a8c2d | 826 | if ( vdl->color != NULL ) |
7e74e26b | 827 | g_object_unref ( vdl->color ); |
ad0a8c2d | 828 | |
fa86f1c0 | 829 | if ( vdl->gcs ) |
c07088dd | 830 | for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) |
fa86f1c0 EB |
831 | g_object_unref ( vdl->gcs[i] ); |
832 | g_free ( vdl->gcs ); | |
833 | ||
c07088dd DRP |
834 | if ( vdl->gcsgradient ) |
835 | for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ ) | |
836 | g_object_unref ( vdl->gcsgradient[i] ); | |
837 | g_free ( vdl->gcsgradient ); | |
838 | ||
ad0a8c2d EB |
839 | a_dems_list_free ( vdl->files ); |
840 | } | |
841 | ||
ad0a8c2d EB |
842 | VikDEMLayer *vik_dem_layer_create ( VikViewport *vp ) |
843 | { | |
844 | VikDEMLayer *vdl = vik_dem_layer_new (); | |
fa86f1c0 EB |
845 | gint i; |
846 | ||
847 | /* TODO: share GCS between layers */ | |
c07088dd | 848 | for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) |
7e74e26b | 849 | vdl->gcs[i] = vik_viewport_new_gc ( vp, dem_height_colors[i], UNUSED_LINE_THICKNESS ); |
c07088dd DRP |
850 | |
851 | for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ ) | |
7e74e26b | 852 | vdl->gcsgradient[i] = vik_viewport_new_gc ( vp, dem_gradient_colors[i], UNUSED_LINE_THICKNESS ); |
fa86f1c0 | 853 | |
ad0a8c2d EB |
854 | return vdl; |
855 | } | |
8c721f83 EB |
856 | /************************************************************** |
857 | **** SOURCES & DOWNLOADING | |
858 | **************************************************************/ | |
859 | typedef struct { | |
860 | gchar *dest; | |
861 | gdouble lat, lon; | |
862 | ||
863 | GMutex *mutex; | |
864 | VikDEMLayer *vdl; /* NULL if not alive */ | |
865 | ||
866 | guint source; | |
867 | } DEMDownloadParams; | |
868 | ||
ad0a8c2d | 869 | |
0c1044e9 | 870 | /************************************************** |
8c721f83 EB |
871 | * SOURCE: SRTM * |
872 | **************************************************/ | |
873 | ||
874 | static void srtm_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata ) | |
0c1044e9 | 875 | { |
8c721f83 | 876 | gint intlat, intlon; |
0e25c0d0 | 877 | const gchar *continent_dir; |
8c721f83 EB |
878 | |
879 | intlat = (int)floor(p->lat); | |
880 | intlon = (int)floor(p->lon); | |
0e25c0d0 QT |
881 | continent_dir = srtm_continent_dir(intlat, intlon); |
882 | ||
883 | if (!continent_dir) { | |
4258f4e2 | 884 | g_warning(N_("No SRTM data available for %f, %f"), p->lat, p->lon); |
0e25c0d0 QT |
885 | return; |
886 | } | |
887 | ||
65a64219 | 888 | gchar *src_fn = g_strdup_printf("%s%s/%c%02d%c%03d.hgt.zip", |
e6c50657 | 889 | SRTM_HTTP_URI, |
0e25c0d0 | 890 | continent_dir, |
8c721f83 EB |
891 | (intlat >= 0) ? 'N' : 'S', |
892 | ABS(intlat), | |
893 | (intlon >= 0) ? 'E' : 'W', | |
894 | ABS(intlon) ); | |
895 | ||
74fbca98 | 896 | static DownloadMapOptions options = { FALSE, FALSE, NULL, 0, a_check_map_file }; |
825413ba | 897 | a_http_download_get_url ( SRTM_HTTP_SITE, src_fn, p->dest, &options, NULL ); |
8c721f83 | 898 | g_free ( src_fn ); |
0c1044e9 EB |
899 | } |
900 | ||
8c721f83 | 901 | static gchar *srtm_lat_lon_to_dest_fn ( gdouble lat, gdouble lon ) |
0c1044e9 | 902 | { |
8c721f83 | 903 | gint intlat, intlon; |
0e25c0d0 QT |
904 | const gchar *continent_dir; |
905 | ||
8c721f83 EB |
906 | intlat = (int)floor(lat); |
907 | intlon = (int)floor(lon); | |
0e25c0d0 QT |
908 | continent_dir = srtm_continent_dir(intlat, intlon); |
909 | ||
910 | if (!continent_dir) | |
911 | continent_dir = "nowhere"; | |
912 | ||
913 | return g_strdup_printf("srtm3-%s%s%c%02d%c%03d.hgt.zip", | |
914 | continent_dir, | |
915 | G_DIR_SEPARATOR_S, | |
8c721f83 EB |
916 | (intlat >= 0) ? 'N' : 'S', |
917 | ABS(intlat), | |
918 | (intlon >= 0) ? 'E' : 'W', | |
919 | ABS(intlon) ); | |
0c1044e9 | 920 | |
0c1044e9 EB |
921 | } |
922 | ||
8c721f83 EB |
923 | /* TODO: generalize */ |
924 | static void srtm_draw_existence ( VikViewport *vp ) | |
0c1044e9 | 925 | { |
8c721f83 EB |
926 | gdouble max_lat, max_lon, min_lat, min_lon; |
927 | gchar buf[strlen(MAPS_CACHE_DIR)+strlen(SRTM_CACHE_TEMPLATE)+30]; | |
928 | gint i, j; | |
929 | ||
930 | vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon ); | |
931 | ||
932 | for (i = floor(min_lat); i <= floor(max_lat); i++) { | |
933 | for (j = floor(min_lon); j <= floor(max_lon); j++) { | |
0e25c0d0 QT |
934 | const gchar *continent_dir; |
935 | if ((continent_dir = srtm_continent_dir(i, j)) == NULL) | |
936 | continue; | |
8c721f83 EB |
937 | g_snprintf(buf, sizeof(buf), SRTM_CACHE_TEMPLATE, |
938 | MAPS_CACHE_DIR, | |
0e25c0d0 QT |
939 | continent_dir, |
940 | G_DIR_SEPARATOR_S, | |
8c721f83 EB |
941 | (i >= 0) ? 'N' : 'S', |
942 | ABS(i), | |
943 | (j >= 0) ? 'E' : 'W', | |
944 | ABS(j) ); | |
45acf79e | 945 | if ( g_file_test(buf, G_FILE_TEST_EXISTS ) == TRUE ) { |
8c721f83 EB |
946 | VikCoord ne, sw; |
947 | gint x1, y1, x2, y2; | |
948 | sw.north_south = i; | |
949 | sw.east_west = j; | |
950 | sw.mode = VIK_COORD_LATLON; | |
951 | ne.north_south = i+1; | |
952 | ne.east_west = j+1; | |
953 | ne.mode = VIK_COORD_LATLON; | |
954 | vik_viewport_coord_to_screen ( vp, &sw, &x1, &y1 ); | |
955 | vik_viewport_coord_to_screen ( vp, &ne, &x2, &y2 ); | |
956 | if ( x1 < 0 ) x1 = 0; | |
957 | if ( y2 < 0 ) y2 = 0; | |
958 | vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc, | |
959 | FALSE, x1, y2, x2-x1, y1-y2 ); | |
960 | } | |
961 | } | |
962 | } | |
0c1044e9 EB |
963 | } |
964 | ||
8c721f83 EB |
965 | |
966 | /************************************************** | |
967 | * SOURCE: USGS 24K * | |
968 | **************************************************/ | |
969 | ||
970 | #ifdef VIK_CONFIG_DEM24K | |
971 | ||
972 | static void dem24k_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata ) | |
0c1044e9 | 973 | { |
8c721f83 EB |
974 | /* TODO: dest dir */ |
975 | gchar *cmdline = g_strdup_printf("%s %.03f %.03f", | |
976 | DEM24K_DOWNLOAD_SCRIPT, | |
977 | floor(p->lat*8)/8, | |
978 | ceil(p->lon*8)/8 ); | |
979 | /* FIX: don't use system, use execv or something. check for existence */ | |
980 | system(cmdline); | |
981 | } | |
0c1044e9 | 982 | |
8c721f83 EB |
983 | static gchar *dem24k_lat_lon_to_dest_fn ( gdouble lat, gdouble lon ) |
984 | { | |
985 | return g_strdup_printf("dem24k/%d/%d/%.03f,%.03f.dem", | |
986 | (gint) lat, | |
987 | (gint) lon, | |
988 | floor(lat*8)/8, | |
989 | ceil(lon*8)/8); | |
990 | } | |
0c1044e9 | 991 | |
8c721f83 EB |
992 | /* TODO: generalize */ |
993 | static void dem24k_draw_existence ( VikViewport *vp ) | |
994 | { | |
995 | gdouble max_lat, max_lon, min_lat, min_lon; | |
996 | gchar buf[strlen(MAPS_CACHE_DIR)+40]; | |
997 | gdouble i, j; | |
0c1044e9 | 998 | |
8c721f83 | 999 | vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon ); |
0c1044e9 | 1000 | |
8c721f83 EB |
1001 | for (i = floor(min_lat*8)/8; i <= floor(max_lat*8)/8; i+=0.125) { |
1002 | /* check lat dir first -- faster */ | |
1003 | g_snprintf(buf, sizeof(buf), "%sdem24k/%d/", | |
1004 | MAPS_CACHE_DIR, | |
1005 | (gint) i ); | |
6b1a58ec | 1006 | if ( g_file_test(buf, G_FILE_TEST_EXISTS) == FALSE ) |
8c721f83 EB |
1007 | continue; |
1008 | for (j = floor(min_lon*8)/8; j <= floor(max_lon*8)/8; j+=0.125) { | |
1009 | /* check lon dir first -- faster */ | |
1010 | g_snprintf(buf, sizeof(buf), "%sdem24k/%d/%d/", | |
1011 | MAPS_CACHE_DIR, | |
1012 | (gint) i, | |
1013 | (gint) j ); | |
45acf79e | 1014 | if ( g_file_test(buf, G_FILE_TEST_EXISTS) == FALSE ) |
8c721f83 EB |
1015 | continue; |
1016 | g_snprintf(buf, sizeof(buf), "%sdem24k/%d/%d/%.03f,%.03f.dem", | |
1017 | MAPS_CACHE_DIR, | |
1018 | (gint) i, | |
1019 | (gint) j, | |
1020 | floor(i*8)/8, | |
1021 | floor(j*8)/8 ); | |
45acf79e | 1022 | if ( g_file_test(buf, G_FILE_TEST_EXISTS ) == TRUE ) { |
8c721f83 EB |
1023 | VikCoord ne, sw; |
1024 | gint x1, y1, x2, y2; | |
1025 | sw.north_south = i; | |
1026 | sw.east_west = j-0.125; | |
1027 | sw.mode = VIK_COORD_LATLON; | |
1028 | ne.north_south = i+0.125; | |
1029 | ne.east_west = j; | |
1030 | ne.mode = VIK_COORD_LATLON; | |
1031 | vik_viewport_coord_to_screen ( vp, &sw, &x1, &y1 ); | |
1032 | vik_viewport_coord_to_screen ( vp, &ne, &x2, &y2 ); | |
1033 | if ( x1 < 0 ) x1 = 0; | |
1034 | if ( y2 < 0 ) y2 = 0; | |
1035 | vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc, | |
1036 | FALSE, x1, y2, x2-x1, y1-y2 ); | |
1037 | } | |
1038 | } | |
1039 | } | |
1040 | } | |
1041 | #endif | |
0c1044e9 | 1042 | |
8c721f83 EB |
1043 | /************************************************** |
1044 | * SOURCES -- DOWNLOADING & IMPORTING TOOL * | |
1045 | ************************************************** | |
1046 | */ | |
0c1044e9 | 1047 | |
8c721f83 EB |
1048 | static void weak_ref_cb ( gpointer ptr, GObject * dead_vdl ) |
1049 | { | |
1050 | DEMDownloadParams *p = ptr; | |
1051 | g_mutex_lock ( p->mutex ); | |
1052 | p->vdl = NULL; | |
1053 | g_mutex_unlock ( p->mutex ); | |
1054 | } | |
0c1044e9 | 1055 | |
8c721f83 EB |
1056 | /* Try to add file full_path. |
1057 | * full_path will be copied. | |
1058 | * returns FALSE if file does not exists, TRUE otherwise. | |
1059 | */ | |
1060 | static gboolean dem_layer_add_file ( VikDEMLayer *vdl, const gchar *full_path ) | |
1061 | { | |
45acf79e | 1062 | if ( g_file_test(full_path, G_FILE_TEST_EXISTS ) == TRUE ) { |
b01c3429 | 1063 | /* only load if file size is not 0 (not in progress) */ |
0c1044e9 | 1064 | struct stat sb; |
8c721f83 | 1065 | stat (full_path, &sb); |
0c1044e9 | 1066 | if ( sb.st_size ) { |
8c721f83 EB |
1067 | gchar *duped_path = g_strdup(full_path); |
1068 | vdl->files = g_list_prepend ( vdl->files, duped_path ); | |
1069 | a_dems_load ( duped_path ); | |
b01c3429 | 1070 | g_debug("%s: %s", __FUNCTION__, duped_path); |
8c721f83 | 1071 | vik_layer_emit_update ( VIK_LAYER(vdl) ); |
0c1044e9 | 1072 | } |
8c721f83 EB |
1073 | return TRUE; |
1074 | } else | |
1075 | return FALSE; | |
1076 | } | |
1077 | ||
1078 | static void dem_download_thread ( DEMDownloadParams *p, gpointer threaddata ) | |
1079 | { | |
1080 | if ( p->source == DEM_SOURCE_SRTM ) | |
1081 | srtm_dem_download_thread ( p, threaddata ); | |
1082 | #ifdef VIK_CONFIG_DEM24K | |
1083 | else if ( p->source == DEM_SOURCE_DEM24K ) | |
1084 | dem24k_dem_download_thread ( p, threaddata ); | |
1085 | #endif | |
062ad57c RN |
1086 | else |
1087 | return; | |
8c721f83 EB |
1088 | |
1089 | gdk_threads_enter(); | |
1090 | g_mutex_lock ( p->mutex ); | |
1091 | if ( p->vdl ) { | |
1092 | g_object_weak_unref ( G_OBJECT(p->vdl), weak_ref_cb, p ); | |
1093 | ||
1094 | if ( dem_layer_add_file ( p->vdl, p->dest ) ) | |
1095 | vik_layer_emit_update ( VIK_LAYER(p->vdl) ); | |
1096 | } | |
1097 | g_mutex_unlock ( p->mutex ); | |
1098 | gdk_threads_leave(); | |
1099 | } | |
1100 | ||
1101 | ||
1102 | static void free_dem_download_params ( DEMDownloadParams *p ) | |
1103 | { | |
1104 | g_mutex_free ( p->mutex ); | |
1105 | g_free ( p->dest ); | |
1106 | g_free ( p ); | |
1107 | } | |
1108 | ||
1109 | static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp) | |
1110 | { | |
1111 | return vvp; | |
1112 | } | |
1113 | ||
1114 | ||
1115 | static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ) | |
1116 | { | |
1117 | VikCoord coord; | |
1118 | struct LatLon ll; | |
1119 | ||
1120 | gchar *full_path; | |
1121 | gchar *dem_file = NULL; | |
1122 | ||
8c721f83 EB |
1123 | vik_viewport_screen_to_coord ( vvp, event->x, event->y, &coord ); |
1124 | vik_coord_to_latlon ( &coord, &ll ); | |
1125 | ||
1126 | ||
1127 | if ( vdl->source == DEM_SOURCE_SRTM ) | |
1128 | dem_file = srtm_lat_lon_to_dest_fn ( ll.lat, ll.lon ); | |
1129 | #ifdef VIK_CONFIG_DEM24K | |
1130 | else if ( vdl->source == DEM_SOURCE_DEM24K ) | |
1131 | dem_file = dem24k_lat_lon_to_dest_fn ( ll.lat, ll.lon ); | |
1132 | #endif | |
1133 | ||
1134 | if ( ! dem_file ) | |
1135 | return TRUE; | |
1136 | ||
1137 | full_path = g_strdup_printf("%s%s", MAPS_CACHE_DIR, dem_file ); | |
1138 | ||
b01c3429 | 1139 | g_debug("%s: %s", __FUNCTION__, full_path); |
8c721f83 EB |
1140 | |
1141 | // TODO: check if already in filelist | |
1142 | ||
1143 | if ( ! dem_layer_add_file(vdl, full_path) ) { | |
4c77d5e0 | 1144 | gchar *tmp = g_strdup_printf ( _("Downloading DEM %s"), dem_file ); |
8c721f83 EB |
1145 | DEMDownloadParams *p = g_malloc(sizeof(DEMDownloadParams)); |
1146 | p->dest = g_strdup(full_path); | |
1147 | p->lat = ll.lat; | |
1148 | p->lon = ll.lon; | |
1149 | p->vdl = vdl; | |
1150 | p->mutex = g_mutex_new(); | |
1151 | p->source = vdl->source; | |
1152 | g_object_weak_ref(G_OBJECT(p->vdl), weak_ref_cb, p ); | |
1153 | ||
1154 | a_background_thread ( VIK_GTK_WINDOW_FROM_LAYER(vdl), tmp, | |
1155 | (vik_thr_func) dem_download_thread, p, | |
1156 | (vik_thr_free_func) free_dem_download_params, NULL, 1 ); | |
2ca82974 RN |
1157 | |
1158 | g_free ( tmp ); | |
0c1044e9 EB |
1159 | } |
1160 | ||
8c721f83 EB |
1161 | g_free ( dem_file ); |
1162 | g_free ( full_path ); | |
1163 | ||
0c1044e9 EB |
1164 | return TRUE; |
1165 | } | |
1166 | ||
1167 | static gboolean dem_layer_download_click ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ) | |
1168 | { | |
1169 | /* choose & keep track of cache dir | |
1170 | * download in background thread | |
1171 | * download over area */ | |
1172 | return TRUE; | |
1173 | } | |
1174 | ||
1175 |