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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 | |
0c1044e9 | 40 | #include "background.h" |
a7023a1b | 41 | #include "viking.h" |
c96fce26 | 42 | #include "vikmapslayer.h" |
ad0a8c2d | 43 | #include "vikdemlayer.h" |
ad0a8c2d EB |
44 | #include "dem.h" |
45 | #include "dems.h" | |
bce3a7b0 EB |
46 | #include "icons/icons.h" |
47 | ||
8c721f83 | 48 | #define MAPS_CACHE_DIR maps_layer_default_dir() |
0c1044e9 | 49 | |
0e25c0d0 | 50 | #define SRTM_CACHE_TEMPLATE "%ssrtm3-%s%s%c%02d%c%03d.hgt.zip" |
e6c50657 | 51 | #define SRTM_HTTP_SITE "dds.cr.usgs.gov" |
f9518bc9 | 52 | #define SRTM_HTTP_URI "/srtm/version2_1/SRTM3/" |
8c721f83 EB |
53 | |
54 | #ifdef VIK_CONFIG_DEM24K | |
55 | #define DEM24K_DOWNLOAD_SCRIPT "dem24k.pl" | |
56 | #endif | |
57 | ||
7e74e26b | 58 | #define UNUSED_LINE_THICKNESS 3 |
0c1044e9 | 59 | |
0c025cfa RN |
60 | static VikDEMLayer *dem_layer_new ( VikViewport *vvp ); |
61 | static void dem_layer_draw ( VikDEMLayer *vdl, VikViewport *vp ); | |
62 | static void dem_layer_free ( VikDEMLayer *vdl ); | |
63 | static VikDEMLayer *dem_layer_create ( VikViewport *vp ); | |
e6c9ae37 | 64 | static const gchar* dem_layer_tooltip( VikDEMLayer *vdl ); |
ad0a8c2d EB |
65 | static void dem_layer_marshall( VikDEMLayer *vdl, guint8 **data, gint *len ); |
66 | static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp ); | |
158b3642 RN |
67 | static gboolean dem_layer_set_param ( VikDEMLayer *vdl, guint16 id, VikLayerParamData data, VikViewport *vp, gboolean is_file_operation ); |
68 | static VikLayerParamData dem_layer_get_param ( VikDEMLayer *vdl, guint16 id, gboolean is_file_operation ); | |
07059501 | 69 | static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file ); |
8c721f83 EB |
70 | static void srtm_draw_existence ( VikViewport *vp ); |
71 | ||
72 | #ifdef VIK_CONFIG_DEM24K | |
73 | static void dem24k_draw_existence ( VikViewport *vp ); | |
74 | #endif | |
ad0a8c2d | 75 | |
0cabb401 | 76 | /* Upped upper limit incase units are feet */ |
ad0a8c2d | 77 | static VikLayerParamScale param_scales[] = { |
0cabb401 RN |
78 | { 0, 30000, 10, 1 }, |
79 | { 1, 30000, 10, 1 }, | |
ad0a8c2d EB |
80 | }; |
81 | ||
8c721f83 EB |
82 | static gchar *params_source[] = { |
83 | "SRTM Global 90m (3 arcsec)", | |
84 | #ifdef VIK_CONFIG_DEM24K | |
85 | "USA 10m (USGS 24k)", | |
86 | #endif | |
4235f369 | 87 | NULL |
8c721f83 EB |
88 | }; |
89 | ||
c07088dd | 90 | static gchar *params_type[] = { |
c3c75563 GB |
91 | N_("Absolute height"), |
92 | N_("Height gradient"), | |
c07088dd DRP |
93 | NULL |
94 | }; | |
95 | ||
8c721f83 EB |
96 | enum { DEM_SOURCE_SRTM, |
97 | #ifdef VIK_CONFIG_DEM24K | |
98 | DEM_SOURCE_DEM24K, | |
99 | #endif | |
8c721f83 EB |
100 | }; |
101 | ||
c07088dd DRP |
102 | enum { DEM_TYPE_HEIGHT = 0, |
103 | DEM_TYPE_GRADIENT, | |
104 | DEM_TYPE_NONE, | |
105 | }; | |
106 | ||
a7023a1b RN |
107 | static VikLayerParamData color_default ( void ) { |
108 | VikLayerParamData data; gdk_color_parse ( "blue", &data.c ); return data; | |
109 | } | |
110 | ||
111 | static VikLayerParamData source_default ( void ) { return VIK_LPD_UINT ( DEM_SOURCE_SRTM ); } | |
112 | static VikLayerParamData type_default ( void ) { return VIK_LPD_UINT ( DEM_TYPE_HEIGHT ); } | |
113 | static VikLayerParamData min_elev_default ( void ) { return VIK_LPD_DOUBLE ( 0.0 ); } | |
114 | static VikLayerParamData max_elev_default ( void ) { return VIK_LPD_DOUBLE ( 1000.0 ); } | |
115 | ||
ad0a8c2d | 116 | static VikLayerParam dem_layer_params[] = { |
a7023a1b RN |
117 | { VIK_LAYER_DEM, "files", VIK_LAYER_PARAM_STRING_LIST, VIK_LAYER_GROUP_NONE, N_("DEM Files:"), VIK_LAYER_WIDGET_FILELIST, NULL, NULL, NULL, NULL }, |
118 | { VIK_LAYER_DEM, "source", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Download Source:"), VIK_LAYER_WIDGET_RADIOGROUP_STATIC, params_source, NULL, NULL, source_default }, | |
119 | { VIK_LAYER_DEM, "color", VIK_LAYER_PARAM_COLOR, VIK_LAYER_GROUP_NONE, N_("Min Elev Color:"), VIK_LAYER_WIDGET_COLOR, NULL, NULL, NULL, color_default }, | |
120 | { VIK_LAYER_DEM, "type", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Type:"), VIK_LAYER_WIDGET_RADIOGROUP_STATIC, params_type, NULL, NULL, type_default }, | |
121 | { VIK_LAYER_DEM, "min_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Min Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0, NULL, NULL, min_elev_default }, | |
122 | { VIK_LAYER_DEM, "max_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Max Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0, NULL, NULL, max_elev_default }, | |
ad0a8c2d EB |
123 | }; |
124 | ||
8c721f83 | 125 | |
7e74e26b | 126 | enum { PARAM_FILES=0, PARAM_SOURCE, PARAM_COLOR, PARAM_TYPE, PARAM_MIN_ELEV, PARAM_MAX_ELEV, NUM_PARAMS }; |
8c721f83 | 127 | |
0c1044e9 EB |
128 | static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp); |
129 | static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ); | |
130 | static gboolean dem_layer_download_click ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ); | |
131 | ||
132 | static VikToolInterface dem_tools[] = { | |
79dce0cb RN |
133 | { { "DEMDownload", "vik-icon-DEM Download", N_("_DEM Download"), NULL, N_("DEM Download"), 0 }, |
134 | (VikToolConstructorFunc) dem_layer_download_create, NULL, NULL, NULL, | |
bce3a7b0 | 135 | (VikToolMouseFunc) dem_layer_download_click, NULL, (VikToolMouseFunc) dem_layer_download_release, |
ef5e8132 RN |
136 | (VikToolKeyFunc) NULL, |
137 | FALSE, | |
138 | GDK_CURSOR_IS_PIXMAP, &cursor_demdl_pixbuf }, | |
0c1044e9 EB |
139 | }; |
140 | ||
141 | ||
7e74e26b RN |
142 | /* HEIGHT COLORS |
143 | The first entry is blue for a default 'sea' colour, | |
144 | however the value used by the corresponding gc can be configured as part of the DEM layer properties. | |
145 | The other colours, shaded from brown to white are used to give an indication of height. | |
ad0a8c2d | 146 | */ |
c07088dd | 147 | static gchar *dem_height_colors[] = { |
ad0a8c2d | 148 | "#0000FF", |
c07088dd DRP |
149 | "#9b793c", "#9c7d40", "#9d8144", "#9e8549", "#9f894d", "#a08d51", "#a29156", "#a3955a", "#a4995e", "#a69d63", |
150 | "#a89f65", "#aaa267", "#ada569", "#afa76b", "#b1aa6d", "#b4ad6f", "#b6b071", "#b9b373", "#bcb676", "#beb978", | |
151 | "#c0bc7a", "#c2c07d", "#c4c37f", "#c6c681", "#c8ca84", "#cacd86", "#ccd188", "#cfd58b", "#c2ce84", "#b5c87e", | |
152 | "#a9c278", "#9cbb71", "#8fb56b", "#83af65", "#76a95e", "#6aa358", "#5e9d52", "#63a055", "#69a458", "#6fa85c", | |
153 | "#74ac5f", "#7ab063", "#80b467", "#86b86a", "#8cbc6e", "#92c072", "#94c175", "#97c278", "#9ac47c", "#9cc57f", | |
154 | "#9fc682", "#a2c886", "#a4c989", "#a7cb8d", "#aacd91", "#afce99", "#b5d0a1", "#bbd2aa", "#c0d3b2", "#c6d5ba", | |
155 | "#ccd7c3", "#d1d9cb", "#d7dbd4", "#DDDDDD", "#e0e0e0", "#e4e4e4", "#e8e8e8", "#ebebeb", "#efefef", "#f3f3f3", | |
156 | "#f7f7f7", "#fbfbfb", "#ffffff" | |
ad0a8c2d EB |
157 | }; |
158 | ||
c07088dd DRP |
159 | static const guint DEM_N_HEIGHT_COLORS = sizeof(dem_height_colors)/sizeof(dem_height_colors[0]); |
160 | ||
ad0a8c2d | 161 | /* |
c07088dd DRP |
162 | "#9b793c", "#9e8549", "#a29156", "#a69d63", "#ada569", "#b4ad6f", "#bcb676", "#c2c07d", "#c8ca84", "#cfd58b", |
163 | "#a9c278", "#83af65", "#5e9d52", "#6fa85c", "#80b467", "#92c072", "#9ac47c", "#a2c886", "#aacd91", "#bbd2aa", | |
164 | "#ccd7c3", "#DDDDDD", "#e8e8e8", "#f3f3f3", "#FFFFFF" | |
ad0a8c2d EB |
165 | }; |
166 | */ | |
167 | ||
c07088dd | 168 | static gchar *dem_gradient_colors[] = { |
0251a183 | 169 | "#AAAAAA", |
c07088dd DRP |
170 | "#000000", "#000011", "#000022", "#000033", "#000044", "#00004c", "#000055", "#00005d", "#000066", "#00006e", |
171 | "#000077", "#00007f", "#000088", "#000090", "#000099", "#0000a1", "#0000aa", "#0000b2", "#0000bb", "#0000c3", | |
172 | "#0000cc", "#0000d4", "#0000dd", "#0000e5", "#0000ee", "#0000f6", "#0000ff", "#0008f7", "#0011ee", "#0019e6", | |
173 | "#0022dd", "#002ad5", "#0033cc", "#003bc4", "#0044bb", "#004cb3", "#0055aa", "#005da2", "#006699", "#006e91", | |
174 | "#007788", "#007f80", "#008877", "#00906f", "#009966", "#00a15e", "#00aa55", "#00b24d", "#00bb44", "#00c33c", | |
175 | "#00cc33", "#00d42b", "#00dd22", "#00e51a", "#00ee11", "#00f609", "#00ff00", "#08f700", "#11ee00", "#19e600", | |
176 | "#22dd00", "#2ad500", "#33cc00", "#3bc400", "#44bb00", "#4cb300", "#55aa00", "#5da200", "#669900", "#6e9100", | |
177 | "#778800", "#7f8000", "#887700", "#906f00", "#996600", "#a15e00", "#aa5500", "#b24d00", "#bb4400", "#c33c00", | |
178 | "#cc3300", "#d42b00", "#dd2200", "#e51a00", "#ee1100", "#f60900", "#ff0000", | |
179 | "#FFFFFF" | |
180 | }; | |
181 | ||
182 | static const guint DEM_N_GRADIENT_COLORS = sizeof(dem_gradient_colors)/sizeof(dem_gradient_colors[0]); | |
ad0a8c2d | 183 | |
ad0a8c2d EB |
184 | |
185 | VikLayerInterface vik_dem_layer_interface = { | |
db386630 | 186 | "DEM", |
affcc0f2 | 187 | N_("DEM"), |
75078768 | 188 | "<control><shift>D", |
5bfafde9 | 189 | &vikdemlayer_pixbuf, |
ad0a8c2d | 190 | |
0c1044e9 EB |
191 | dem_tools, |
192 | sizeof(dem_tools) / sizeof(dem_tools[0]), | |
ad0a8c2d EB |
193 | |
194 | dem_layer_params, | |
195 | NUM_PARAMS, | |
196 | NULL, | |
197 | 0, | |
198 | ||
199 | VIK_MENU_ITEM_ALL, | |
200 | ||
0c025cfa | 201 | (VikLayerFuncCreate) dem_layer_create, |
ad0a8c2d | 202 | (VikLayerFuncRealize) NULL, |
b112cbf5 | 203 | (VikLayerFuncPostRead) dem_layer_post_read, |
0c025cfa | 204 | (VikLayerFuncFree) dem_layer_free, |
ad0a8c2d EB |
205 | |
206 | (VikLayerFuncProperties) NULL, | |
0c025cfa | 207 | (VikLayerFuncDraw) dem_layer_draw, |
ad0a8c2d EB |
208 | (VikLayerFuncChangeCoordMode) NULL, |
209 | ||
210 | (VikLayerFuncSetMenuItemsSelection) NULL, | |
211 | (VikLayerFuncGetMenuItemsSelection) NULL, | |
212 | ||
213 | (VikLayerFuncAddMenuItems) NULL, | |
214 | (VikLayerFuncSublayerAddMenuItems) NULL, | |
215 | ||
216 | (VikLayerFuncSublayerRenameRequest) NULL, | |
217 | (VikLayerFuncSublayerToggleVisible) NULL, | |
9da7faf2 | 218 | (VikLayerFuncSublayerTooltip) NULL, |
e6c9ae37 | 219 | (VikLayerFuncLayerTooltip) dem_layer_tooltip, |
a5dcfdb7 | 220 | (VikLayerFuncLayerSelected) NULL, |
ad0a8c2d | 221 | |
ad0a8c2d EB |
222 | (VikLayerFuncMarshall) dem_layer_marshall, |
223 | (VikLayerFuncUnmarshall) dem_layer_unmarshall, | |
224 | ||
225 | (VikLayerFuncSetParam) dem_layer_set_param, | |
226 | (VikLayerFuncGetParam) dem_layer_get_param, | |
227 | ||
228 | (VikLayerFuncReadFileData) NULL, | |
229 | (VikLayerFuncWriteFileData) NULL, | |
230 | ||
231 | (VikLayerFuncDeleteItem) NULL, | |
d5874ef9 | 232 | (VikLayerFuncCutItem) NULL, |
ad0a8c2d EB |
233 | (VikLayerFuncCopyItem) NULL, |
234 | (VikLayerFuncPasteItem) NULL, | |
235 | (VikLayerFuncFreeCopiedItem) NULL, | |
236 | (VikLayerFuncDragDropRequest) NULL, | |
77ad64fa RN |
237 | |
238 | (VikLayerFuncSelectClick) NULL, | |
08f14055 RN |
239 | (VikLayerFuncSelectMove) NULL, |
240 | (VikLayerFuncSelectRelease) NULL, | |
e46f259a | 241 | (VikLayerFuncSelectedViewportMenu) NULL, |
ad0a8c2d EB |
242 | }; |
243 | ||
244 | struct _VikDEMLayer { | |
245 | VikLayer vl; | |
ad0a8c2d | 246 | GdkGC **gcs; |
c07088dd | 247 | GdkGC **gcsgradient; |
ad0a8c2d | 248 | GList *files; |
415302f4 | 249 | gdouble min_elev; |
ad0a8c2d | 250 | gdouble max_elev; |
a7023a1b | 251 | GdkColor color; |
8c721f83 | 252 | guint source; |
c07088dd | 253 | guint type; |
ad0a8c2d EB |
254 | }; |
255 | ||
256 | GType vik_dem_layer_get_type () | |
257 | { | |
258 | static GType vdl_type = 0; | |
259 | ||
260 | if (!vdl_type) | |
261 | { | |
262 | static const GTypeInfo vdl_info = | |
263 | { | |
264 | sizeof (VikDEMLayerClass), | |
265 | NULL, /* base_init */ | |
266 | NULL, /* base_finalize */ | |
267 | NULL, /* class init */ | |
268 | NULL, /* class_finalize */ | |
269 | NULL, /* class_data */ | |
270 | sizeof (VikDEMLayer), | |
271 | 0, | |
272 | NULL /* instance init */ | |
273 | }; | |
274 | vdl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikDEMLayer", &vdl_info, 0 ); | |
275 | } | |
276 | ||
277 | return vdl_type; | |
278 | } | |
279 | ||
e6c9ae37 RN |
280 | static const gchar* dem_layer_tooltip( VikDEMLayer *vdl ) |
281 | { | |
282 | static gchar tmp_buf[100]; | |
283 | g_snprintf (tmp_buf, sizeof(tmp_buf), _("Number of files: %d"), g_list_length (vdl->files)); | |
284 | return tmp_buf; | |
285 | } | |
286 | ||
ad0a8c2d EB |
287 | static void dem_layer_marshall( VikDEMLayer *vdl, guint8 **data, gint *len ) |
288 | { | |
289 | vik_layer_marshall_params ( VIK_LAYER(vdl), data, len ); | |
290 | } | |
291 | ||
292 | static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp ) | |
293 | { | |
0c025cfa | 294 | VikDEMLayer *rv = dem_layer_new ( vvp ); |
fa86f1c0 EB |
295 | gint i; |
296 | ||
297 | /* TODO: share GCS between layers */ | |
a7023a1b RN |
298 | for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) { |
299 | if ( i == 0 ) | |
300 | rv->gcs[i] = vik_viewport_new_gc_from_color ( vvp, &(rv->color), UNUSED_LINE_THICKNESS ); | |
301 | else | |
302 | rv->gcs[i] = vik_viewport_new_gc ( vvp, dem_height_colors[i], UNUSED_LINE_THICKNESS ); | |
303 | } | |
c07088dd | 304 | for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ ) |
7e74e26b | 305 | rv->gcsgradient[i] = vik_viewport_new_gc ( vvp, dem_gradient_colors[i], UNUSED_LINE_THICKNESS ); |
fa86f1c0 | 306 | |
ad0a8c2d EB |
307 | vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp ); |
308 | return rv; | |
309 | } | |
310 | ||
29392f59 RN |
311 | /* Structure for DEM data used in background thread */ |
312 | typedef struct { | |
313 | VikDEMLayer *vdl; | |
314 | } dem_load_thread_data; | |
315 | ||
316 | /* | |
317 | * Function for starting the DEM file loading as a background thread | |
318 | */ | |
319 | static int dem_layer_load_list_thread ( dem_load_thread_data *dltd, gpointer threaddata ) | |
320 | { | |
321 | int result = 0; // Default to good | |
322 | // Actual Load | |
323 | if ( a_dems_load_list ( &(dltd->vdl->files), threaddata ) ) { | |
324 | // Thread cancelled | |
325 | result = -1; | |
326 | } | |
327 | ||
328 | // ATM as each file is processed the screen is not updated (no mechanism exposed to a_dems_load_list) | |
329 | // Thus force draw only at the end, as loading is complete/aborted | |
f01eebd4 | 330 | //gdk_threads_enter(); |
94595b61 RN |
331 | // Test is helpful to prevent Gtk-CRITICAL warnings if the program is exitted whilst loading |
332 | if ( IS_VIK_LAYER(dltd->vdl) ) | |
da121f9b | 333 | vik_layer_emit_update ( VIK_LAYER(dltd->vdl) ); // NB update from background thread |
f01eebd4 | 334 | //gdk_threads_leave(); |
29392f59 RN |
335 | |
336 | return result; | |
337 | } | |
338 | ||
339 | static void dem_layer_thread_data_free ( dem_load_thread_data *data ) | |
340 | { | |
341 | // Simple release | |
342 | g_free ( data ); | |
343 | } | |
344 | ||
345 | static void dem_layer_thread_cancel ( dem_load_thread_data *data ) | |
346 | { | |
347 | // Abort loading | |
348 | // Instead of freeing the list, leave it as partially processed | |
349 | // Thus we can see/use what was done | |
350 | } | |
351 | ||
158b3642 | 352 | gboolean dem_layer_set_param ( VikDEMLayer *vdl, guint16 id, VikLayerParamData data, VikViewport *vp, gboolean is_file_operation ) |
ad0a8c2d EB |
353 | { |
354 | switch ( id ) | |
355 | { | |
a7023a1b | 356 | case PARAM_COLOR: vdl->color = data.c; gdk_gc_set_rgb_fg_color ( vdl->gcs[0], &(vdl->color) ); break; |
8c721f83 | 357 | case PARAM_SOURCE: vdl->source = data.u; break; |
c07088dd | 358 | case PARAM_TYPE: vdl->type = data.u; break; |
0cabb401 RN |
359 | case PARAM_MIN_ELEV: |
360 | /* Convert to store internally | |
361 | NB file operation always in internal units (metres) */ | |
362 | if (!is_file_operation && a_vik_get_units_height () == VIK_UNITS_HEIGHT_FEET ) | |
ab1e0693 | 363 | vdl->min_elev = VIK_FEET_TO_METERS(data.d); |
0cabb401 RN |
364 | else |
365 | vdl->min_elev = data.d; | |
366 | break; | |
367 | case PARAM_MAX_ELEV: | |
368 | /* Convert to store internally | |
369 | NB file operation always in internal units (metres) */ | |
370 | if (!is_file_operation && a_vik_get_units_height () == VIK_UNITS_HEIGHT_FEET ) | |
ab1e0693 | 371 | vdl->max_elev = VIK_FEET_TO_METERS(data.d); |
0cabb401 RN |
372 | else |
373 | vdl->max_elev = data.d; | |
374 | break; | |
29392f59 RN |
375 | case PARAM_FILES: |
376 | { | |
377 | // Clear out old settings - if any commonalities with new settings they will have to be read again | |
378 | a_dems_list_free ( vdl->files ); | |
379 | // Set file list so any other intermediate screen drawing updates will show currently loaded DEMs by the working thread | |
380 | vdl->files = data.sl; | |
09c91d84 RN |
381 | // No need for thread if no files |
382 | if ( vdl->files ) { | |
383 | // Thread Load | |
384 | dem_load_thread_data *dltd = g_malloc ( sizeof(dem_load_thread_data) ); | |
385 | dltd->vdl = vdl; | |
386 | dltd->vdl->files = data.sl; | |
387 | ||
388 | a_background_thread ( VIK_GTK_WINDOW_FROM_WIDGET(vp), | |
389 | _("DEM Loading"), | |
390 | (vik_thr_func) dem_layer_load_list_thread, | |
391 | dltd, | |
392 | (vik_thr_free_func) dem_layer_thread_data_free, | |
393 | (vik_thr_free_func) dem_layer_thread_cancel, | |
394 | g_list_length ( data.sl ) ); // Number of DEM files | |
395 | } | |
29392f59 RN |
396 | break; |
397 | } | |
ad0a8c2d EB |
398 | } |
399 | return TRUE; | |
400 | } | |
401 | ||
158b3642 | 402 | static VikLayerParamData dem_layer_get_param ( VikDEMLayer *vdl, guint16 id, gboolean is_file_operation ) |
ad0a8c2d EB |
403 | { |
404 | VikLayerParamData rv; | |
405 | switch ( id ) | |
406 | { | |
407 | case PARAM_FILES: rv.sl = vdl->files; break; | |
8c721f83 | 408 | case PARAM_SOURCE: rv.u = vdl->source; break; |
c07088dd | 409 | case PARAM_TYPE: rv.u = vdl->type; break; |
a7023a1b | 410 | case PARAM_COLOR: rv.c = vdl->color; break; |
0cabb401 RN |
411 | case PARAM_MIN_ELEV: |
412 | /* Convert for display in desired units | |
413 | NB file operation always in internal units (metres) */ | |
414 | if (!is_file_operation && a_vik_get_units_height () == VIK_UNITS_HEIGHT_FEET ) | |
6c20e59a | 415 | rv.d = VIK_METERS_TO_FEET(vdl->min_elev); |
0cabb401 RN |
416 | else |
417 | rv.d = vdl->min_elev; | |
418 | break; | |
419 | case PARAM_MAX_ELEV: | |
420 | /* Convert for display in desired units | |
421 | NB file operation always in internal units (metres) */ | |
422 | if (!is_file_operation && a_vik_get_units_height () == VIK_UNITS_HEIGHT_FEET ) | |
6c20e59a | 423 | rv.d = VIK_METERS_TO_FEET(vdl->max_elev); |
0cabb401 RN |
424 | else |
425 | rv.d = vdl->max_elev; | |
426 | break; | |
ad0a8c2d EB |
427 | } |
428 | return rv; | |
429 | } | |
430 | ||
07059501 | 431 | static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file ) |
ad0a8c2d | 432 | { |
7e74e26b | 433 | /* nothing ATM, but keep in case it's needed the future */ |
ad0a8c2d EB |
434 | } |
435 | ||
0c025cfa | 436 | static VikDEMLayer *dem_layer_new ( VikViewport *vvp ) |
ad0a8c2d EB |
437 | { |
438 | VikDEMLayer *vdl = VIK_DEM_LAYER ( g_object_new ( VIK_DEM_LAYER_TYPE, NULL ) ); | |
fa86f1c0 | 439 | |
a0c65899 | 440 | vik_layer_set_type ( VIK_LAYER(vdl), VIK_LAYER_DEM ); |
ad0a8c2d EB |
441 | |
442 | vdl->files = NULL; | |
443 | ||
c07088dd DRP |
444 | vdl->gcs = g_malloc(sizeof(GdkGC *)*DEM_N_HEIGHT_COLORS); |
445 | vdl->gcsgradient = g_malloc(sizeof(GdkGC *)*DEM_N_GRADIENT_COLORS); | |
fa86f1c0 | 446 | /* make new gcs only if we need it (copy layer -> use old) */ |
ad0a8c2d | 447 | |
a7023a1b RN |
448 | // Ensure the base GC is available so the default colour can be applied |
449 | if ( vvp ) vdl->gcs[0] = vik_viewport_new_gc ( vvp, "#0000FF", 1 ); | |
450 | ||
451 | vik_layer_set_defaults ( VIK_LAYER(vdl), vvp ); | |
452 | ||
ad0a8c2d EB |
453 | return vdl; |
454 | } | |
455 | ||
456 | ||
f9518bc9 DRP |
457 | static inline guint16 get_height_difference(gint16 elev, gint16 new_elev) |
458 | { | |
459 | if(new_elev == VIK_DEM_INVALID_ELEVATION) | |
460 | return 0; | |
461 | else | |
462 | return abs(new_elev - elev); | |
463 | } | |
464 | ||
0c1044e9 | 465 | |
ad0a8c2d EB |
466 | static void vik_dem_layer_draw_dem ( VikDEMLayer *vdl, VikViewport *vp, VikDEM *dem ) |
467 | { | |
f9518bc9 | 468 | VikDEMColumn *column, *prevcolumn, *nextcolumn; |
ad0a8c2d EB |
469 | |
470 | struct LatLon dem_northeast, dem_southwest; | |
f9518bc9 | 471 | gdouble max_lat, max_lon, min_lat, min_lon; |
ad0a8c2d | 472 | |
ad0a8c2d EB |
473 | /**** Check if viewport and DEM data overlap ****/ |
474 | ||
475 | /* get min, max lat/lon of viewport */ | |
0c1044e9 | 476 | vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon ); |
ad0a8c2d EB |
477 | |
478 | /* get min, max lat/lon of DEM data */ | |
479 | if ( dem->horiz_units == VIK_DEM_HORIZ_LL_ARCSECONDS ) { | |
480 | dem_northeast.lat = dem->max_north / 3600.0; | |
481 | dem_northeast.lon = dem->max_east / 3600.0; | |
482 | dem_southwest.lat = dem->min_north / 3600.0; | |
483 | dem_southwest.lon = dem->min_east / 3600.0; | |
484 | } else if ( dem->horiz_units == VIK_DEM_HORIZ_UTM_METERS ) { | |
485 | struct UTM dem_northeast_utm, dem_southwest_utm; | |
486 | dem_northeast_utm.northing = dem->max_north; | |
487 | dem_northeast_utm.easting = dem->max_east; | |
488 | dem_southwest_utm.northing = dem->min_north; | |
489 | dem_southwest_utm.easting = dem->min_east; | |
490 | dem_northeast_utm.zone = dem_southwest_utm.zone = dem->utm_zone; | |
491 | dem_northeast_utm.letter = dem_southwest_utm.letter = dem->utm_letter; | |
492 | ||
493 | a_coords_utm_to_latlon(&dem_northeast_utm, &dem_northeast); | |
494 | a_coords_utm_to_latlon(&dem_southwest_utm, &dem_southwest); | |
495 | } | |
496 | ||
497 | if ( (max_lat > dem_northeast.lat && min_lat > dem_northeast.lat) || | |
498 | (max_lat < dem_southwest.lat && min_lat < dem_southwest.lat) ) | |
499 | return; | |
500 | else if ( (max_lon > dem_northeast.lon && min_lon > dem_northeast.lon) || | |
501 | (max_lon < dem_southwest.lon && min_lon < dem_southwest.lon) ) | |
502 | return; | |
503 | /* else they overlap */ | |
504 | ||
505 | /**** End Overlap Check ****/ | |
0c1044e9 EB |
506 | /* boxes to show where we have DEM instead of actually drawing the DEM. |
507 | * useful if we want to see what areas we have coverage for (if we want | |
508 | * to get elevation data for a track) but don't want to cover the map. | |
509 | */ | |
510 | ||
511 | #if 0 | |
512 | /* draw a box if a DEM is loaded. in future I'd like to add an option for this | |
513 | * this is useful if we want to see what areas we have dem for but don't want to | |
514 | * cover the map (or maybe we just need translucent DEM?) */ | |
515 | { | |
516 | VikCoord demne, demsw; | |
517 | gint x1, y1, x2, y2; | |
518 | vik_coord_load_from_latlon(&demne, vik_viewport_get_coord_mode(vp), &dem_northeast); | |
519 | vik_coord_load_from_latlon(&demsw, vik_viewport_get_coord_mode(vp), &dem_southwest); | |
520 | ||
521 | vik_viewport_coord_to_screen ( vp, &demne, &x1, &y1 ); | |
522 | vik_viewport_coord_to_screen ( vp, &demsw, &x2, &y2 ); | |
523 | ||
524 | if ( x1 > vik_viewport_get_width(vp) ) x1=vik_viewport_get_width(vp); | |
525 | if ( y2 > vik_viewport_get_height(vp) ) y2=vik_viewport_get_height(vp); | |
526 | if ( x2 < 0 ) x2 = 0; | |
527 | if ( y1 < 0 ) y1 = 0; | |
ff37db21 | 528 | vik_viewport_draw_rectangle ( vp, gtk_widget_get_style(GTK_WIDGET(vp))->black_gc, |
0c1044e9 | 529 | FALSE, x2, y1, x1-x2, y2-y1 ); |
0c1044e9 EB |
530 | return; |
531 | } | |
532 | #endif | |
ad0a8c2d EB |
533 | |
534 | if ( dem->horiz_units == VIK_DEM_HORIZ_LL_ARCSECONDS ) { | |
535 | VikCoord tmp; /* TODO: don't use coord_load_from_latlon, especially if in latlon drawing mode */ | |
536 | ||
537 | gdouble max_lat_as, max_lon_as, min_lat_as, min_lon_as; | |
538 | gdouble start_lat_as, end_lat_as, start_lon_as, end_lon_as; | |
539 | ||
540 | gdouble start_lat, end_lat, start_lon, end_lon; | |
541 | ||
542 | struct LatLon counter; | |
543 | ||
544 | guint x, y, start_x, start_y; | |
545 | ||
546 | gint16 elev; | |
547 | ||
f9518bc9 | 548 | guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 80 ); /* todo: smarter calculation. */ |
ad0a8c2d EB |
549 | |
550 | gdouble nscale_deg = dem->north_scale / ((gdouble) 3600); | |
551 | gdouble escale_deg = dem->east_scale / ((gdouble) 3600); | |
552 | ||
553 | max_lat_as = max_lat * 3600; | |
554 | min_lat_as = min_lat * 3600; | |
555 | max_lon_as = max_lon * 3600; | |
556 | min_lon_as = min_lon * 3600; | |
557 | ||
558 | start_lat_as = MAX(min_lat_as, dem->min_north); | |
559 | end_lat_as = MIN(max_lat_as, dem->max_north); | |
560 | start_lon_as = MAX(min_lon_as, dem->min_east); | |
561 | end_lon_as = MIN(max_lon_as, dem->max_east); | |
562 | ||
563 | start_lat = floor(start_lat_as / dem->north_scale) * nscale_deg; | |
564 | end_lat = ceil (end_lat_as / dem->north_scale) * nscale_deg; | |
565 | start_lon = floor(start_lon_as / dem->east_scale) * escale_deg; | |
566 | end_lon = ceil (end_lon_as / dem->east_scale) * escale_deg; | |
567 | ||
568 | vik_dem_east_north_to_xy ( dem, start_lon_as, start_lat_as, &start_x, &start_y ); | |
f9518bc9 DRP |
569 | guint gradient_skip_factor = 1; |
570 | if(vdl->type == DEM_TYPE_GRADIENT) | |
571 | gradient_skip_factor = skip_factor; | |
ad0a8c2d | 572 | |
415302f4 EB |
573 | /* verify sane elev interval */ |
574 | if ( vdl->max_elev <= vdl->min_elev ) | |
575 | vdl->max_elev = vdl->min_elev + 1; | |
576 | ||
f9518bc9 DRP |
577 | 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 ) { |
578 | // NOTE: ( counter.lon <= end_lon + ESCALE_DEG*SKIP_FACTOR ) is neccessary so in high zoom modes, | |
579 | // the leftmost column does also get drawn, if the center point is out of viewport. | |
5e610fc3 | 580 | if ( x < dem->n_columns ) { |
ad0a8c2d | 581 | column = g_ptr_array_index ( dem->columns, x ); |
f9518bc9 DRP |
582 | // get previous and next column. catch out-of-bound. |
583 | gint32 new_x = x; | |
584 | new_x -= gradient_skip_factor; | |
585 | if(new_x < 1) | |
586 | prevcolumn = g_ptr_array_index ( dem->columns, x+1); | |
587 | else | |
588 | prevcolumn = g_ptr_array_index ( dem->columns, new_x); | |
589 | new_x = x; | |
590 | new_x += gradient_skip_factor; | |
591 | if(new_x >= dem->n_columns) | |
592 | nextcolumn = g_ptr_array_index ( dem->columns, x-1); | |
593 | else | |
594 | nextcolumn = g_ptr_array_index ( dem->columns, new_x); | |
c07088dd | 595 | |
ad0a8c2d EB |
596 | for ( y=start_y, counter.lat = start_lat; counter.lat <= end_lat; counter.lat += nscale_deg * skip_factor, y += skip_factor ) { |
597 | if ( y > column->n_points ) | |
598 | break; | |
f9518bc9 | 599 | |
ad0a8c2d | 600 | elev = column->points[y]; |
415302f4 | 601 | |
f9518bc9 DRP |
602 | // calculate bounding box for drawing |
603 | gint box_x, box_y, box_width, box_height; | |
604 | struct LatLon box_c; | |
605 | box_c = counter; | |
606 | box_c.lat += (nscale_deg * skip_factor)/2; | |
607 | box_c.lon -= (escale_deg * skip_factor)/2; | |
608 | vik_coord_load_from_latlon(&tmp, vik_viewport_get_coord_mode(vp), &box_c); | |
609 | vik_viewport_coord_to_screen(vp, &tmp, &box_x, &box_y); | |
610 | // catch box at borders | |
611 | if(box_x < 0) | |
612 | box_x = 0; | |
613 | if(box_y < 0) | |
614 | box_y = 0; | |
615 | box_c.lat -= nscale_deg * skip_factor; | |
616 | box_c.lon += escale_deg * skip_factor; | |
617 | vik_coord_load_from_latlon(&tmp, vik_viewport_get_coord_mode(vp), &box_c); | |
618 | vik_viewport_coord_to_screen(vp, &tmp, &box_width, &box_height); | |
619 | box_width -= box_x; | |
620 | box_height -= box_y; | |
621 | // catch box at borders | |
622 | if(box_width < 0 || box_height < 0) | |
623 | continue; // skip this. this is out of our viewport anyway. FIXME: why? | |
624 | ||
7e74e26b | 625 | gboolean below_minimum = FALSE; |
f9518bc9 | 626 | if(vdl->type == DEM_TYPE_HEIGHT) { |
7e74e26b | 627 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev ) { |
104f8c15 RN |
628 | // Prevent 'elev - vdl->min_elev' from being negative so can safely use as array index |
629 | elev = ceil ( vdl->min_elev ); | |
7e74e26b RN |
630 | below_minimum = TRUE; |
631 | } | |
f9518bc9 | 632 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev ) |
104f8c15 | 633 | elev = vdl->max_elev; |
f9518bc9 | 634 | } |
415302f4 | 635 | |
ad0a8c2d | 636 | { |
f9518bc9 DRP |
637 | if(box_width < 0 || box_height < 0) // FIXME: why does this happen? |
638 | continue; | |
639 | ||
640 | if(vdl->type == DEM_TYPE_GRADIENT) { | |
641 | if( elev == VIK_DEM_INVALID_ELEVATION ) { | |
642 | /* don't draw it */ | |
643 | } else { | |
644 | // calculate and sum gradient in all directions | |
645 | gint16 change = 0; | |
646 | gint32 new_y; | |
647 | ||
648 | // calculate gradient from height points all around the current one | |
649 | new_y = y - gradient_skip_factor; | |
650 | if(new_y < 0) | |
651 | new_y = y; | |
652 | change += get_height_difference(elev, prevcolumn->points[new_y]); | |
653 | change += get_height_difference(elev, column->points[new_y]); | |
654 | change += get_height_difference(elev, nextcolumn->points[new_y]); | |
655 | ||
656 | change += get_height_difference(elev, prevcolumn->points[y]); | |
657 | change += get_height_difference(elev, nextcolumn->points[y]); | |
658 | ||
659 | new_y = y + gradient_skip_factor; | |
660 | if(new_y >= column->n_points) | |
661 | new_y = y; | |
662 | change += get_height_difference(elev, prevcolumn->points[new_y]); | |
663 | change += get_height_difference(elev, column->points[new_y]); | |
664 | change += get_height_difference(elev, nextcolumn->points[new_y]); | |
665 | ||
666 | change = change / ((skip_factor > 1) ? log(skip_factor) : 0.55); // FIXME: better calc. | |
667 | ||
668 | if(change < vdl->min_elev) | |
104f8c15 RN |
669 | // Prevent 'change - vdl->min_elev' from being negative so can safely use as array index |
670 | change = ceil ( vdl->min_elev ); | |
f9518bc9 DRP |
671 | |
672 | if(change > vdl->max_elev) | |
673 | change = vdl->max_elev; | |
674 | ||
675 | // void vik_viewport_draw_rectangle ( VikViewport *vvp, GdkGC *gc, gboolean filled, gint x1, gint y1, gint x2, gint y2 ); | |
104f8c15 | 676 | 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 | 677 | } |
c07088dd | 678 | } else { |
f9518bc9 DRP |
679 | if(vdl->type == DEM_TYPE_HEIGHT) { |
680 | if ( elev == VIK_DEM_INVALID_ELEVATION ) | |
681 | ; /* don't draw it */ | |
7e74e26b RN |
682 | else if ( elev <= 0 || below_minimum ) |
683 | /* If 'sea' colour or below the defined mininum draw in the configurable colour */ | |
f9518bc9 DRP |
684 | vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, box_x, box_y, box_width, box_height); |
685 | else | |
104f8c15 | 686 | 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 |
687 | } |
688 | } | |
ad0a8c2d EB |
689 | } |
690 | } /* for y= */ | |
691 | } | |
692 | } /* for x= */ | |
693 | } else if ( dem->horiz_units == VIK_DEM_HORIZ_UTM_METERS ) { | |
694 | gdouble max_nor, max_eas, min_nor, min_eas; | |
695 | gdouble start_nor, start_eas, end_nor, end_eas; | |
696 | ||
697 | gint16 elev; | |
698 | ||
699 | guint x, y, start_x, start_y; | |
700 | ||
701 | VikCoord tmp; /* TODO: don't use coord_load_from_latlon, especially if in latlon drawing mode */ | |
702 | struct UTM counter; | |
703 | ||
704 | guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 10 ); /* todo: smarter calculation. */ | |
705 | ||
0c1044e9 EB |
706 | VikCoord tleft, tright, bleft, bright; |
707 | ||
708 | vik_viewport_screen_to_coord ( vp, 0, 0, &tleft ); | |
709 | vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &tright ); | |
710 | vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &bleft ); | |
711 | vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &bright ); | |
712 | ||
713 | ||
ad0a8c2d EB |
714 | vik_coord_convert(&tleft, VIK_COORD_UTM); |
715 | vik_coord_convert(&tright, VIK_COORD_UTM); | |
716 | vik_coord_convert(&bleft, VIK_COORD_UTM); | |
717 | vik_coord_convert(&bright, VIK_COORD_UTM); | |
718 | ||
719 | max_nor = MAX(tleft.north_south, tright.north_south); | |
720 | min_nor = MIN(bleft.north_south, bright.north_south); | |
721 | max_eas = MAX(bright.east_west, tright.east_west); | |
722 | min_eas = MIN(bleft.east_west, tleft.east_west); | |
723 | ||
724 | start_nor = MAX(min_nor, dem->min_north); | |
725 | end_nor = MIN(max_nor, dem->max_north); | |
726 | if ( tleft.utm_zone == dem->utm_zone && bleft.utm_zone == dem->utm_zone | |
727 | && (tleft.utm_letter >= 'N') == (dem->utm_letter >= 'N') | |
728 | && (bleft.utm_letter >= 'N') == (dem->utm_letter >= 'N') ) /* if the utm zones/hemispheres are different, min_eas will be bogus */ | |
729 | start_eas = MAX(min_eas, dem->min_east); | |
730 | else | |
731 | start_eas = dem->min_east; | |
732 | if ( tright.utm_zone == dem->utm_zone && bright.utm_zone == dem->utm_zone | |
733 | && (tright.utm_letter >= 'N') == (dem->utm_letter >= 'N') | |
734 | && (bright.utm_letter >= 'N') == (dem->utm_letter >= 'N') ) /* if the utm zones/hemispheres are different, min_eas will be bogus */ | |
735 | end_eas = MIN(max_eas, dem->max_east); | |
736 | else | |
737 | end_eas = dem->max_east; | |
738 | ||
739 | start_nor = floor(start_nor / dem->north_scale) * dem->north_scale; | |
740 | end_nor = ceil (end_nor / dem->north_scale) * dem->north_scale; | |
741 | start_eas = floor(start_eas / dem->east_scale) * dem->east_scale; | |
742 | end_eas = ceil (end_eas / dem->east_scale) * dem->east_scale; | |
743 | ||
744 | vik_dem_east_north_to_xy ( dem, start_eas, start_nor, &start_x, &start_y ); | |
745 | ||
746 | /* TODO: why start_x and start_y are -1 -- rounding error from above? */ | |
747 | ||
748 | counter.zone = dem->utm_zone; | |
749 | counter.letter = dem->utm_letter; | |
750 | ||
751 | for ( x=start_x, counter.easting = start_eas; counter.easting <= end_eas; counter.easting += dem->east_scale * skip_factor, x += skip_factor ) { | |
752 | if ( x > 0 && x < dem->n_columns ) { | |
753 | column = g_ptr_array_index ( dem->columns, x ); | |
754 | for ( y=start_y, counter.northing = start_nor; counter.northing <= end_nor; counter.northing += dem->north_scale * skip_factor, y += skip_factor ) { | |
755 | if ( y > column->n_points ) | |
756 | continue; | |
757 | elev = column->points[y]; | |
415302f4 EB |
758 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev ) |
759 | elev=vdl->min_elev; | |
760 | if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev ) | |
761 | elev=vdl->max_elev; | |
762 | ||
ad0a8c2d EB |
763 | { |
764 | gint a, b; | |
765 | vik_coord_load_from_utm(&tmp, vik_viewport_get_coord_mode(vp), &counter); | |
766 | vik_viewport_coord_to_screen(vp, &tmp, &a, &b); | |
767 | if ( elev == VIK_DEM_INVALID_ELEVATION ) | |
768 | ; /* don't draw it */ | |
769 | else if ( elev <= 0 ) | |
f9518bc9 | 770 | vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, a-1, b-1, 2, 2 ); |
ad0a8c2d | 771 | else |
f9518bc9 | 772 | 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 |
773 | } |
774 | } /* for y= */ | |
775 | } | |
776 | } /* for x= */ | |
777 | } | |
778 | } | |
779 | ||
0c1044e9 EB |
780 | /* return the continent for the specified lat, lon */ |
781 | /* TODO */ | |
0e25c0d0 | 782 | static const gchar *srtm_continent_dir ( gint lat, gint lon ) |
0c1044e9 | 783 | { |
0e25c0d0 QT |
784 | extern const char *_srtm_continent_data[]; |
785 | static GHashTable *srtm_continent = NULL; | |
786 | const gchar *continent; | |
787 | gchar name[16]; | |
788 | ||
789 | if (!srtm_continent) { | |
790 | const gchar **s; | |
791 | ||
792 | srtm_continent = g_hash_table_new(g_str_hash, g_str_equal); | |
793 | s = _srtm_continent_data; | |
794 | while (*s != (gchar *)-1) { | |
795 | continent = *s++; | |
796 | while (*s) { | |
0654760a | 797 | g_hash_table_insert(srtm_continent, (gpointer) *s, (gpointer) continent); |
0e25c0d0 QT |
798 | s++; |
799 | } | |
800 | s++; | |
801 | } | |
802 | } | |
803 | g_snprintf(name, sizeof(name), "%c%02d%c%03d", | |
804 | (lat >= 0) ? 'N' : 'S', ABS(lat), | |
805 | (lon >= 0) ? 'E' : 'W', ABS(lon)); | |
806 | ||
807 | return(g_hash_table_lookup(srtm_continent, name)); | |
0c1044e9 EB |
808 | } |
809 | ||
0c025cfa | 810 | static void dem_layer_draw ( VikDEMLayer *vdl, VikViewport *vp ) |
ad0a8c2d | 811 | { |
ad0a8c2d EB |
812 | GList *dems_iter = vdl->files; |
813 | VikDEM *dem; | |
0c1044e9 | 814 | |
0c1044e9 EB |
815 | |
816 | /* search for SRTM3 90m */ | |
8c721f83 EB |
817 | |
818 | if ( vdl->source == DEM_SOURCE_SRTM ) | |
819 | srtm_draw_existence ( vp ); | |
820 | #ifdef VIK_CONFIG_DEM24K | |
821 | else if ( vdl->source == DEM_SOURCE_DEM24K ) | |
822 | dem24k_draw_existence ( vp ); | |
823 | #endif | |
0c1044e9 | 824 | |
ad0a8c2d EB |
825 | while ( dems_iter ) { |
826 | dem = a_dems_get ( (const char *) (dems_iter->data) ); | |
827 | if ( dem ) | |
828 | vik_dem_layer_draw_dem ( vdl, vp, dem ); | |
829 | dems_iter = dems_iter->next; | |
830 | } | |
831 | } | |
832 | ||
0c025cfa | 833 | static void dem_layer_free ( VikDEMLayer *vdl ) |
ad0a8c2d | 834 | { |
fa86f1c0 | 835 | gint i; |
fa86f1c0 | 836 | if ( vdl->gcs ) |
c07088dd | 837 | for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) |
fa86f1c0 EB |
838 | g_object_unref ( vdl->gcs[i] ); |
839 | g_free ( vdl->gcs ); | |
840 | ||
c07088dd DRP |
841 | if ( vdl->gcsgradient ) |
842 | for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ ) | |
843 | g_object_unref ( vdl->gcsgradient[i] ); | |
844 | g_free ( vdl->gcsgradient ); | |
845 | ||
ad0a8c2d EB |
846 | a_dems_list_free ( vdl->files ); |
847 | } | |
848 | ||
0c025cfa | 849 | VikDEMLayer *dem_layer_create ( VikViewport *vp ) |
ad0a8c2d | 850 | { |
0c025cfa | 851 | VikDEMLayer *vdl = dem_layer_new ( vp ); |
fa86f1c0 | 852 | gint i; |
8aff54f2 RN |
853 | if ( vp ) { |
854 | /* TODO: share GCS between layers */ | |
a7023a1b RN |
855 | for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) { |
856 | if ( i > 0 ) | |
857 | vdl->gcs[i] = vik_viewport_new_gc ( vp, dem_height_colors[i], UNUSED_LINE_THICKNESS ); | |
858 | } | |
8aff54f2 RN |
859 | for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ ) |
860 | vdl->gcsgradient[i] = vik_viewport_new_gc ( vp, dem_gradient_colors[i], UNUSED_LINE_THICKNESS ); | |
861 | } | |
ad0a8c2d EB |
862 | return vdl; |
863 | } | |
8c721f83 EB |
864 | /************************************************************** |
865 | **** SOURCES & DOWNLOADING | |
866 | **************************************************************/ | |
867 | typedef struct { | |
868 | gchar *dest; | |
869 | gdouble lat, lon; | |
870 | ||
871 | GMutex *mutex; | |
872 | VikDEMLayer *vdl; /* NULL if not alive */ | |
873 | ||
874 | guint source; | |
875 | } DEMDownloadParams; | |
876 | ||
ad0a8c2d | 877 | |
0c1044e9 | 878 | /************************************************** |
8c721f83 EB |
879 | * SOURCE: SRTM * |
880 | **************************************************/ | |
881 | ||
882 | static void srtm_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata ) | |
0c1044e9 | 883 | { |
8c721f83 | 884 | gint intlat, intlon; |
0e25c0d0 | 885 | const gchar *continent_dir; |
8c721f83 EB |
886 | |
887 | intlat = (int)floor(p->lat); | |
888 | intlon = (int)floor(p->lon); | |
0e25c0d0 QT |
889 | continent_dir = srtm_continent_dir(intlat, intlon); |
890 | ||
891 | if (!continent_dir) { | |
4258f4e2 | 892 | g_warning(N_("No SRTM data available for %f, %f"), p->lat, p->lon); |
0e25c0d0 QT |
893 | return; |
894 | } | |
895 | ||
65a64219 | 896 | gchar *src_fn = g_strdup_printf("%s%s/%c%02d%c%03d.hgt.zip", |
e6c50657 | 897 | SRTM_HTTP_URI, |
0e25c0d0 | 898 | continent_dir, |
8c721f83 EB |
899 | (intlat >= 0) ? 'N' : 'S', |
900 | ABS(intlat), | |
901 | (intlon >= 0) ? 'E' : 'W', | |
902 | ABS(intlon) ); | |
903 | ||
74fbca98 | 904 | static DownloadMapOptions options = { FALSE, FALSE, NULL, 0, a_check_map_file }; |
825413ba | 905 | a_http_download_get_url ( SRTM_HTTP_SITE, src_fn, p->dest, &options, NULL ); |
8c721f83 | 906 | g_free ( src_fn ); |
0c1044e9 EB |
907 | } |
908 | ||
8c721f83 | 909 | static gchar *srtm_lat_lon_to_dest_fn ( gdouble lat, gdouble lon ) |
0c1044e9 | 910 | { |
8c721f83 | 911 | gint intlat, intlon; |
0e25c0d0 QT |
912 | const gchar *continent_dir; |
913 | ||
8c721f83 EB |
914 | intlat = (int)floor(lat); |
915 | intlon = (int)floor(lon); | |
0e25c0d0 QT |
916 | continent_dir = srtm_continent_dir(intlat, intlon); |
917 | ||
918 | if (!continent_dir) | |
919 | continent_dir = "nowhere"; | |
920 | ||
921 | return g_strdup_printf("srtm3-%s%s%c%02d%c%03d.hgt.zip", | |
922 | continent_dir, | |
923 | G_DIR_SEPARATOR_S, | |
8c721f83 EB |
924 | (intlat >= 0) ? 'N' : 'S', |
925 | ABS(intlat), | |
926 | (intlon >= 0) ? 'E' : 'W', | |
927 | ABS(intlon) ); | |
0c1044e9 | 928 | |
0c1044e9 EB |
929 | } |
930 | ||
8c721f83 EB |
931 | /* TODO: generalize */ |
932 | static void srtm_draw_existence ( VikViewport *vp ) | |
0c1044e9 | 933 | { |
8c721f83 EB |
934 | gdouble max_lat, max_lon, min_lat, min_lon; |
935 | gchar buf[strlen(MAPS_CACHE_DIR)+strlen(SRTM_CACHE_TEMPLATE)+30]; | |
936 | gint i, j; | |
937 | ||
938 | vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon ); | |
939 | ||
940 | for (i = floor(min_lat); i <= floor(max_lat); i++) { | |
941 | for (j = floor(min_lon); j <= floor(max_lon); j++) { | |
0e25c0d0 QT |
942 | const gchar *continent_dir; |
943 | if ((continent_dir = srtm_continent_dir(i, j)) == NULL) | |
944 | continue; | |
8c721f83 EB |
945 | g_snprintf(buf, sizeof(buf), SRTM_CACHE_TEMPLATE, |
946 | MAPS_CACHE_DIR, | |
0e25c0d0 QT |
947 | continent_dir, |
948 | G_DIR_SEPARATOR_S, | |
8c721f83 EB |
949 | (i >= 0) ? 'N' : 'S', |
950 | ABS(i), | |
951 | (j >= 0) ? 'E' : 'W', | |
952 | ABS(j) ); | |
45acf79e | 953 | if ( g_file_test(buf, G_FILE_TEST_EXISTS ) == TRUE ) { |
8c721f83 EB |
954 | VikCoord ne, sw; |
955 | gint x1, y1, x2, y2; | |
956 | sw.north_south = i; | |
957 | sw.east_west = j; | |
958 | sw.mode = VIK_COORD_LATLON; | |
959 | ne.north_south = i+1; | |
960 | ne.east_west = j+1; | |
961 | ne.mode = VIK_COORD_LATLON; | |
962 | vik_viewport_coord_to_screen ( vp, &sw, &x1, &y1 ); | |
963 | vik_viewport_coord_to_screen ( vp, &ne, &x2, &y2 ); | |
964 | if ( x1 < 0 ) x1 = 0; | |
965 | if ( y2 < 0 ) y2 = 0; | |
ff37db21 | 966 | vik_viewport_draw_rectangle ( vp, gtk_widget_get_style(GTK_WIDGET(vp))->black_gc, |
8c721f83 EB |
967 | FALSE, x1, y2, x2-x1, y1-y2 ); |
968 | } | |
969 | } | |
970 | } | |
0c1044e9 EB |
971 | } |
972 | ||
8c721f83 EB |
973 | |
974 | /************************************************** | |
975 | * SOURCE: USGS 24K * | |
976 | **************************************************/ | |
977 | ||
978 | #ifdef VIK_CONFIG_DEM24K | |
979 | ||
980 | static void dem24k_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata ) | |
0c1044e9 | 981 | { |
8c721f83 EB |
982 | /* TODO: dest dir */ |
983 | gchar *cmdline = g_strdup_printf("%s %.03f %.03f", | |
984 | DEM24K_DOWNLOAD_SCRIPT, | |
985 | floor(p->lat*8)/8, | |
986 | ceil(p->lon*8)/8 ); | |
987 | /* FIX: don't use system, use execv or something. check for existence */ | |
988 | system(cmdline); | |
d94f70cc | 989 | g_free ( cmdline ); |
8c721f83 | 990 | } |
0c1044e9 | 991 | |
8c721f83 EB |
992 | static gchar *dem24k_lat_lon_to_dest_fn ( gdouble lat, gdouble lon ) |
993 | { | |
994 | return g_strdup_printf("dem24k/%d/%d/%.03f,%.03f.dem", | |
995 | (gint) lat, | |
996 | (gint) lon, | |
997 | floor(lat*8)/8, | |
998 | ceil(lon*8)/8); | |
999 | } | |
0c1044e9 | 1000 | |
8c721f83 EB |
1001 | /* TODO: generalize */ |
1002 | static void dem24k_draw_existence ( VikViewport *vp ) | |
1003 | { | |
1004 | gdouble max_lat, max_lon, min_lat, min_lon; | |
1005 | gchar buf[strlen(MAPS_CACHE_DIR)+40]; | |
1006 | gdouble i, j; | |
0c1044e9 | 1007 | |
8c721f83 | 1008 | vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon ); |
0c1044e9 | 1009 | |
8c721f83 EB |
1010 | for (i = floor(min_lat*8)/8; i <= floor(max_lat*8)/8; i+=0.125) { |
1011 | /* check lat dir first -- faster */ | |
1012 | g_snprintf(buf, sizeof(buf), "%sdem24k/%d/", | |
1013 | MAPS_CACHE_DIR, | |
1014 | (gint) i ); | |
6b1a58ec | 1015 | if ( g_file_test(buf, G_FILE_TEST_EXISTS) == FALSE ) |
8c721f83 EB |
1016 | continue; |
1017 | for (j = floor(min_lon*8)/8; j <= floor(max_lon*8)/8; j+=0.125) { | |
1018 | /* check lon dir first -- faster */ | |
1019 | g_snprintf(buf, sizeof(buf), "%sdem24k/%d/%d/", | |
1020 | MAPS_CACHE_DIR, | |
1021 | (gint) i, | |
1022 | (gint) j ); | |
45acf79e | 1023 | if ( g_file_test(buf, G_FILE_TEST_EXISTS) == FALSE ) |
8c721f83 EB |
1024 | continue; |
1025 | g_snprintf(buf, sizeof(buf), "%sdem24k/%d/%d/%.03f,%.03f.dem", | |
1026 | MAPS_CACHE_DIR, | |
1027 | (gint) i, | |
1028 | (gint) j, | |
1029 | floor(i*8)/8, | |
1030 | floor(j*8)/8 ); | |
45acf79e | 1031 | if ( g_file_test(buf, G_FILE_TEST_EXISTS ) == TRUE ) { |
8c721f83 EB |
1032 | VikCoord ne, sw; |
1033 | gint x1, y1, x2, y2; | |
1034 | sw.north_south = i; | |
1035 | sw.east_west = j-0.125; | |
1036 | sw.mode = VIK_COORD_LATLON; | |
1037 | ne.north_south = i+0.125; | |
1038 | ne.east_west = j; | |
1039 | ne.mode = VIK_COORD_LATLON; | |
1040 | vik_viewport_coord_to_screen ( vp, &sw, &x1, &y1 ); | |
1041 | vik_viewport_coord_to_screen ( vp, &ne, &x2, &y2 ); | |
1042 | if ( x1 < 0 ) x1 = 0; | |
1043 | if ( y2 < 0 ) y2 = 0; | |
ff37db21 | 1044 | vik_viewport_draw_rectangle ( vp, gtk_widget_get_style(GTK_WIDGET(vp))->black_gc, |
8c721f83 EB |
1045 | FALSE, x1, y2, x2-x1, y1-y2 ); |
1046 | } | |
1047 | } | |
1048 | } | |
1049 | } | |
1050 | #endif | |
0c1044e9 | 1051 | |
8c721f83 EB |
1052 | /************************************************** |
1053 | * SOURCES -- DOWNLOADING & IMPORTING TOOL * | |
1054 | ************************************************** | |
1055 | */ | |
0c1044e9 | 1056 | |
8c721f83 EB |
1057 | static void weak_ref_cb ( gpointer ptr, GObject * dead_vdl ) |
1058 | { | |
1059 | DEMDownloadParams *p = ptr; | |
1060 | g_mutex_lock ( p->mutex ); | |
1061 | p->vdl = NULL; | |
1062 | g_mutex_unlock ( p->mutex ); | |
1063 | } | |
0c1044e9 | 1064 | |
8c721f83 EB |
1065 | /* Try to add file full_path. |
1066 | * full_path will be copied. | |
1067 | * returns FALSE if file does not exists, TRUE otherwise. | |
1068 | */ | |
1069 | static gboolean dem_layer_add_file ( VikDEMLayer *vdl, const gchar *full_path ) | |
1070 | { | |
45acf79e | 1071 | if ( g_file_test(full_path, G_FILE_TEST_EXISTS ) == TRUE ) { |
b01c3429 | 1072 | /* only load if file size is not 0 (not in progress) */ |
0c1044e9 | 1073 | struct stat sb; |
8c721f83 | 1074 | stat (full_path, &sb); |
0c1044e9 | 1075 | if ( sb.st_size ) { |
8c721f83 EB |
1076 | gchar *duped_path = g_strdup(full_path); |
1077 | vdl->files = g_list_prepend ( vdl->files, duped_path ); | |
1078 | a_dems_load ( duped_path ); | |
b01c3429 | 1079 | g_debug("%s: %s", __FUNCTION__, duped_path); |
0c1044e9 | 1080 | } |
8c721f83 EB |
1081 | return TRUE; |
1082 | } else | |
1083 | return FALSE; | |
1084 | } | |
1085 | ||
1086 | static void dem_download_thread ( DEMDownloadParams *p, gpointer threaddata ) | |
1087 | { | |
1088 | if ( p->source == DEM_SOURCE_SRTM ) | |
1089 | srtm_dem_download_thread ( p, threaddata ); | |
1090 | #ifdef VIK_CONFIG_DEM24K | |
1091 | else if ( p->source == DEM_SOURCE_DEM24K ) | |
1092 | dem24k_dem_download_thread ( p, threaddata ); | |
1093 | #endif | |
062ad57c RN |
1094 | else |
1095 | return; | |
8c721f83 | 1096 | |
f01eebd4 | 1097 | //gdk_threads_enter(); |
8c721f83 EB |
1098 | g_mutex_lock ( p->mutex ); |
1099 | if ( p->vdl ) { | |
1100 | g_object_weak_unref ( G_OBJECT(p->vdl), weak_ref_cb, p ); | |
1101 | ||
1102 | if ( dem_layer_add_file ( p->vdl, p->dest ) ) | |
da121f9b | 1103 | vik_layer_emit_update ( VIK_LAYER(p->vdl) ); // NB update from background thread |
8c721f83 EB |
1104 | } |
1105 | g_mutex_unlock ( p->mutex ); | |
f01eebd4 | 1106 | //gdk_threads_leave(); |
8c721f83 EB |
1107 | } |
1108 | ||
1109 | ||
1110 | static void free_dem_download_params ( DEMDownloadParams *p ) | |
1111 | { | |
1112 | g_mutex_free ( p->mutex ); | |
1113 | g_free ( p->dest ); | |
1114 | g_free ( p ); | |
1115 | } | |
1116 | ||
1117 | static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp) | |
1118 | { | |
1119 | return vvp; | |
1120 | } | |
1121 | ||
1122 | ||
1123 | static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ) | |
1124 | { | |
1125 | VikCoord coord; | |
1126 | struct LatLon ll; | |
1127 | ||
1128 | gchar *full_path; | |
1129 | gchar *dem_file = NULL; | |
1130 | ||
8c721f83 EB |
1131 | vik_viewport_screen_to_coord ( vvp, event->x, event->y, &coord ); |
1132 | vik_coord_to_latlon ( &coord, &ll ); | |
1133 | ||
1134 | ||
1135 | if ( vdl->source == DEM_SOURCE_SRTM ) | |
1136 | dem_file = srtm_lat_lon_to_dest_fn ( ll.lat, ll.lon ); | |
1137 | #ifdef VIK_CONFIG_DEM24K | |
1138 | else if ( vdl->source == DEM_SOURCE_DEM24K ) | |
1139 | dem_file = dem24k_lat_lon_to_dest_fn ( ll.lat, ll.lon ); | |
1140 | #endif | |
1141 | ||
1142 | if ( ! dem_file ) | |
1143 | return TRUE; | |
1144 | ||
1145 | full_path = g_strdup_printf("%s%s", MAPS_CACHE_DIR, dem_file ); | |
1146 | ||
b01c3429 | 1147 | g_debug("%s: %s", __FUNCTION__, full_path); |
8c721f83 EB |
1148 | |
1149 | // TODO: check if already in filelist | |
1150 | ||
1151 | if ( ! dem_layer_add_file(vdl, full_path) ) { | |
4c77d5e0 | 1152 | gchar *tmp = g_strdup_printf ( _("Downloading DEM %s"), dem_file ); |
8c721f83 EB |
1153 | DEMDownloadParams *p = g_malloc(sizeof(DEMDownloadParams)); |
1154 | p->dest = g_strdup(full_path); | |
1155 | p->lat = ll.lat; | |
1156 | p->lon = ll.lon; | |
1157 | p->vdl = vdl; | |
1158 | p->mutex = g_mutex_new(); | |
1159 | p->source = vdl->source; | |
1160 | g_object_weak_ref(G_OBJECT(p->vdl), weak_ref_cb, p ); | |
1161 | ||
1162 | a_background_thread ( VIK_GTK_WINDOW_FROM_LAYER(vdl), tmp, | |
1163 | (vik_thr_func) dem_download_thread, p, | |
1164 | (vik_thr_free_func) free_dem_download_params, NULL, 1 ); | |
2ca82974 RN |
1165 | |
1166 | g_free ( tmp ); | |
0c1044e9 | 1167 | } |
f01eebd4 | 1168 | else |
da121f9b | 1169 | vik_layer_emit_update ( VIK_LAYER(vdl) ); |
0c1044e9 | 1170 | |
8c721f83 EB |
1171 | g_free ( dem_file ); |
1172 | g_free ( full_path ); | |
1173 | ||
0c1044e9 EB |
1174 | return TRUE; |
1175 | } | |
1176 | ||
1177 | static gboolean dem_layer_download_click ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ) | |
1178 | { | |
1179 | /* choose & keep track of cache dir | |
1180 | * download in background thread | |
1181 | * download over area */ | |
1182 | return TRUE; | |
1183 | } | |
1184 | ||
1185 |