2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
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.
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.
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
25 #include <sys/types.h>
29 #include <glib/gi18n.h>
36 #include "background.h"
37 #include "vikwaypoint.h"
39 #include "vikviewport.h"
40 #include "viktreeview.h"
42 #include "vikaggregatelayer.h"
43 #include "viklayerspanel.h"
44 #include "vikdemlayer.h"
50 #include "icons/icons.h"
52 #define MAPS_CACHE_DIR maps_layer_default_dir()
54 #define SRTM_CACHE_TEMPLATE "%ssrtm3-%s%s%c%02d%c%03d.hgt.zip"
55 #define SRTM_FTP_SITE "e0srp01u.ecs.nasa.gov"
56 #define SRTM_FTP_URI "/srtm/version2/SRTM3/"
58 #ifdef VIK_CONFIG_DEM24K
59 #define DEM24K_DOWNLOAD_SCRIPT "dem24k.pl"
63 static void dem_layer_marshall( VikDEMLayer *vdl, guint8 **data, gint *len );
64 static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp );
65 static gboolean dem_layer_set_param ( VikDEMLayer *vdl, guint16 id, VikLayerParamData data, VikViewport *vp );
66 static VikLayerParamData dem_layer_get_param ( VikDEMLayer *vdl, guint16 id );
67 static void dem_layer_update_gc ( VikDEMLayer *vdl, VikViewport *vp, const gchar *color );
68 static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file );
69 static void srtm_draw_existence ( VikViewport *vp );
71 #ifdef VIK_CONFIG_DEM24K
72 static void dem24k_draw_existence ( VikViewport *vp );
75 static VikLayerParamScale param_scales[] = {
81 static gchar *params_source[] = {
82 "SRTM Global 90m (3 arcsec)",
83 #ifdef VIK_CONFIG_DEM24K
90 enum { DEM_SOURCE_SRTM,
91 #ifdef VIK_CONFIG_DEM24K
97 static VikLayerParam dem_layer_params[] = {
98 { "files", VIK_LAYER_PARAM_STRING_LIST, VIK_LAYER_GROUP_NONE, N_("DEM Files:"), VIK_LAYER_WIDGET_FILELIST },
99 { "source", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Download Source:"), VIK_LAYER_WIDGET_RADIOGROUP_STATIC, params_source, NULL },
100 { "color", VIK_LAYER_PARAM_STRING, VIK_LAYER_GROUP_NONE, N_("Color:"), VIK_LAYER_WIDGET_ENTRY },
101 { "min_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Min Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 },
102 { "max_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Max Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 },
103 { "line_thickness", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Line Thickness:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 1 },
107 enum { PARAM_FILES=0, PARAM_SOURCE, PARAM_COLOR, PARAM_MIN_ELEV, PARAM_MAX_ELEV, PARAM_LINE_THICKNESS, NUM_PARAMS };
109 static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp);
110 static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp );
111 static gboolean dem_layer_download_click ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp );
113 static VikToolInterface dem_tools[] = {
114 { N_("DEM Download/Import"), (VikToolConstructorFunc) dem_layer_download_create, NULL, NULL, NULL,
115 (VikToolMouseFunc) dem_layer_download_click, NULL, (VikToolMouseFunc) dem_layer_download_release,
116 (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_demdl_pixbuf },
123 static gchar *dem_colors[] = {
229 static const guint DEM_N_COLORS = sizeof(dem_colors)/sizeof(dem_colors[0]);
232 VikLayerInterface vik_dem_layer_interface = {
237 sizeof(dem_tools) / sizeof(dem_tools[0]),
246 (VikLayerFuncCreate) vik_dem_layer_create,
247 (VikLayerFuncRealize) NULL,
249 (VikLayerFuncFree) vik_dem_layer_free,
251 (VikLayerFuncProperties) NULL,
252 (VikLayerFuncDraw) vik_dem_layer_draw,
253 (VikLayerFuncChangeCoordMode) NULL,
255 (VikLayerFuncSetMenuItemsSelection) NULL,
256 (VikLayerFuncGetMenuItemsSelection) NULL,
258 (VikLayerFuncAddMenuItems) NULL,
259 (VikLayerFuncSublayerAddMenuItems) NULL,
261 (VikLayerFuncSublayerRenameRequest) NULL,
262 (VikLayerFuncSublayerToggleVisible) NULL,
264 (VikLayerFuncMarshall) dem_layer_marshall,
265 (VikLayerFuncUnmarshall) dem_layer_unmarshall,
267 (VikLayerFuncSetParam) dem_layer_set_param,
268 (VikLayerFuncGetParam) dem_layer_get_param,
270 (VikLayerFuncReadFileData) NULL,
271 (VikLayerFuncWriteFileData) NULL,
273 (VikLayerFuncDeleteItem) NULL,
274 (VikLayerFuncCopyItem) NULL,
275 (VikLayerFuncPasteItem) NULL,
276 (VikLayerFuncFreeCopiedItem) NULL,
277 (VikLayerFuncDragDropRequest) NULL,
280 struct _VikDEMLayer {
287 guint8 line_thickness;
292 GType vik_dem_layer_get_type ()
294 static GType vdl_type = 0;
298 static const GTypeInfo vdl_info =
300 sizeof (VikDEMLayerClass),
301 NULL, /* base_init */
302 NULL, /* base_finalize */
303 NULL, /* class init */
304 NULL, /* class_finalize */
305 NULL, /* class_data */
306 sizeof (VikDEMLayer),
308 NULL /* instance init */
310 vdl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikDEMLayer", &vdl_info, 0 );
316 static void dem_layer_marshall( VikDEMLayer *vdl, guint8 **data, gint *len )
318 vik_layer_marshall_params ( VIK_LAYER(vdl), data, len );
321 static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp )
323 VikDEMLayer *rv = vik_dem_layer_new ();
326 /* TODO: share GCS between layers */
327 for ( i = 0; i < DEM_N_COLORS; i++ )
328 rv->gcs[i] = vik_viewport_new_gc ( vvp, dem_colors[i], rv->line_thickness );
330 vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp );
334 gboolean dem_layer_set_param ( VikDEMLayer *vdl, guint16 id, VikLayerParamData data, VikViewport *vp )
338 case PARAM_COLOR: if ( vdl->color ) g_free ( vdl->color ); vdl->color = g_strdup ( data.s ); break;
339 case PARAM_SOURCE: vdl->source = data.u; break;
340 case PARAM_MIN_ELEV: vdl->min_elev = data.d; break;
341 case PARAM_MAX_ELEV: vdl->max_elev = data.d; break;
342 case PARAM_LINE_THICKNESS: if ( data.u >= 1 && data.u <= 15 ) vdl->line_thickness = data.u; break;
343 case PARAM_FILES: a_dems_load_list ( &(data.sl) ); a_dems_list_free ( vdl->files ); vdl->files = data.sl; break;
348 static VikLayerParamData dem_layer_get_param ( VikDEMLayer *vdl, guint16 id )
350 VikLayerParamData rv;
353 case PARAM_FILES: rv.sl = vdl->files; break;
354 case PARAM_SOURCE: rv.u = vdl->source; break;
355 case PARAM_COLOR: rv.s = vdl->color ? vdl->color : ""; break;
356 case PARAM_MIN_ELEV: rv.d = vdl->min_elev; break;
357 case PARAM_MAX_ELEV: rv.d = vdl->max_elev; break;
358 case PARAM_LINE_THICKNESS: rv.i = vdl->line_thickness; break;
363 static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file )
365 VikDEMLayer *vdl = VIK_DEM_LAYER(vl);
367 g_object_unref ( G_OBJECT(vdl->gc) );
369 vdl->gc = vik_viewport_new_gc ( vp, vdl->color, vdl->line_thickness );
372 VikDEMLayer *vik_dem_layer_new ( )
374 VikDEMLayer *vdl = VIK_DEM_LAYER ( g_object_new ( VIK_DEM_LAYER_TYPE, NULL ) );
376 vik_layer_init ( VIK_LAYER(vdl), VIK_LAYER_DEM );
383 vdl->gcs = g_malloc(sizeof(GdkGC *)*DEM_N_COLORS);
384 /* make new gcs only if we need it (copy layer -> use old) */
387 vdl->max_elev = 1000.0;
388 vdl->source = DEM_SOURCE_SRTM;
389 vdl->line_thickness = 3;
396 static void vik_dem_layer_draw_dem ( VikDEMLayer *vdl, VikViewport *vp, VikDEM *dem )
398 VikDEMColumn *column;
400 struct LatLon dem_northeast, dem_southwest;
401 gdouble max_lat, max_lon, min_lat, min_lon;
403 /**** Check if viewport and DEM data overlap ****/
405 /* get min, max lat/lon of viewport */
406 vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon );
408 /* get min, max lat/lon of DEM data */
409 if ( dem->horiz_units == VIK_DEM_HORIZ_LL_ARCSECONDS ) {
410 dem_northeast.lat = dem->max_north / 3600.0;
411 dem_northeast.lon = dem->max_east / 3600.0;
412 dem_southwest.lat = dem->min_north / 3600.0;
413 dem_southwest.lon = dem->min_east / 3600.0;
414 } else if ( dem->horiz_units == VIK_DEM_HORIZ_UTM_METERS ) {
415 struct UTM dem_northeast_utm, dem_southwest_utm;
416 dem_northeast_utm.northing = dem->max_north;
417 dem_northeast_utm.easting = dem->max_east;
418 dem_southwest_utm.northing = dem->min_north;
419 dem_southwest_utm.easting = dem->min_east;
420 dem_northeast_utm.zone = dem_southwest_utm.zone = dem->utm_zone;
421 dem_northeast_utm.letter = dem_southwest_utm.letter = dem->utm_letter;
423 a_coords_utm_to_latlon(&dem_northeast_utm, &dem_northeast);
424 a_coords_utm_to_latlon(&dem_southwest_utm, &dem_southwest);
427 if ( (max_lat > dem_northeast.lat && min_lat > dem_northeast.lat) ||
428 (max_lat < dem_southwest.lat && min_lat < dem_southwest.lat) )
430 else if ( (max_lon > dem_northeast.lon && min_lon > dem_northeast.lon) ||
431 (max_lon < dem_southwest.lon && min_lon < dem_southwest.lon) )
433 /* else they overlap */
435 /**** End Overlap Check ****/
436 /* boxes to show where we have DEM instead of actually drawing the DEM.
437 * useful if we want to see what areas we have coverage for (if we want
438 * to get elevation data for a track) but don't want to cover the map.
442 /* draw a box if a DEM is loaded. in future I'd like to add an option for this
443 * this is useful if we want to see what areas we have dem for but don't want to
444 * cover the map (or maybe we just need translucent DEM?) */
446 VikCoord demne, demsw;
448 vik_coord_load_from_latlon(&demne, vik_viewport_get_coord_mode(vp), &dem_northeast);
449 vik_coord_load_from_latlon(&demsw, vik_viewport_get_coord_mode(vp), &dem_southwest);
451 vik_viewport_coord_to_screen ( vp, &demne, &x1, &y1 );
452 vik_viewport_coord_to_screen ( vp, &demsw, &x2, &y2 );
454 if ( x1 > vik_viewport_get_width(vp) ) x1=vik_viewport_get_width(vp);
455 if ( y2 > vik_viewport_get_height(vp) ) y2=vik_viewport_get_height(vp);
456 if ( x2 < 0 ) x2 = 0;
457 if ( y1 < 0 ) y1 = 0;
458 vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc,
459 FALSE, x2, y1, x1-x2, y2-y1 );
464 if ( dem->horiz_units == VIK_DEM_HORIZ_LL_ARCSECONDS ) {
465 VikCoord tmp; /* TODO: don't use coord_load_from_latlon, especially if in latlon drawing mode */
467 gdouble max_lat_as, max_lon_as, min_lat_as, min_lon_as;
468 gdouble start_lat_as, end_lat_as, start_lon_as, end_lon_as;
470 gdouble start_lat, end_lat, start_lon, end_lon;
472 struct LatLon counter;
474 guint x, y, start_x, start_y;
478 guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 40 ); /* todo: smarter calculation. */
480 gdouble nscale_deg = dem->north_scale / ((gdouble) 3600);
481 gdouble escale_deg = dem->east_scale / ((gdouble) 3600);
483 max_lat_as = max_lat * 3600;
484 min_lat_as = min_lat * 3600;
485 max_lon_as = max_lon * 3600;
486 min_lon_as = min_lon * 3600;
488 start_lat_as = MAX(min_lat_as, dem->min_north);
489 end_lat_as = MIN(max_lat_as, dem->max_north);
490 start_lon_as = MAX(min_lon_as, dem->min_east);
491 end_lon_as = MIN(max_lon_as, dem->max_east);
493 start_lat = floor(start_lat_as / dem->north_scale) * nscale_deg;
494 end_lat = ceil (end_lat_as / dem->north_scale) * nscale_deg;
495 start_lon = floor(start_lon_as / dem->east_scale) * escale_deg;
496 end_lon = ceil (end_lon_as / dem->east_scale) * escale_deg;
498 vik_dem_east_north_to_xy ( dem, start_lon_as, start_lat_as, &start_x, &start_y );
500 /* verify sane elev interval */
501 if ( vdl->max_elev <= vdl->min_elev )
502 vdl->max_elev = vdl->min_elev + 1;
504 for ( x=start_x, counter.lon = start_lon; counter.lon <= end_lon; counter.lon += escale_deg * skip_factor, x += skip_factor ) {
505 if ( x > 0 && x < dem->n_columns ) {
506 column = g_ptr_array_index ( dem->columns, x );
507 for ( y=start_y, counter.lat = start_lat; counter.lat <= end_lat; counter.lat += nscale_deg * skip_factor, y += skip_factor ) {
508 if ( y > column->n_points )
510 elev = column->points[y];
512 if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev )
514 if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev )
521 vik_coord_load_from_latlon(&tmp, vik_viewport_get_coord_mode(vp), &counter);
522 vik_viewport_coord_to_screen(vp, &tmp, &a, &b);
523 if ( elev == VIK_DEM_INVALID_ELEVATION )
524 ; /* don't draw it */
525 else if ( elev <= 0 )
526 vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, a-2, b-2, 4, 4 );
528 vik_viewport_draw_rectangle(vp, vdl->gcs[(gint)floor((elev - vdl->min_elev)/(vdl->max_elev - vdl->min_elev)*(DEM_N_COLORS-2))+1], TRUE, a-2, b-2, 4, 4 );
533 } else if ( dem->horiz_units == VIK_DEM_HORIZ_UTM_METERS ) {
534 gdouble max_nor, max_eas, min_nor, min_eas;
535 gdouble start_nor, start_eas, end_nor, end_eas;
539 guint x, y, start_x, start_y;
541 VikCoord tmp; /* TODO: don't use coord_load_from_latlon, especially if in latlon drawing mode */
544 guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 10 ); /* todo: smarter calculation. */
546 VikCoord tleft, tright, bleft, bright;
548 vik_viewport_screen_to_coord ( vp, 0, 0, &tleft );
549 vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &tright );
550 vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &bleft );
551 vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &bright );
554 vik_coord_convert(&tleft, VIK_COORD_UTM);
555 vik_coord_convert(&tright, VIK_COORD_UTM);
556 vik_coord_convert(&bleft, VIK_COORD_UTM);
557 vik_coord_convert(&bright, VIK_COORD_UTM);
559 max_nor = MAX(tleft.north_south, tright.north_south);
560 min_nor = MIN(bleft.north_south, bright.north_south);
561 max_eas = MAX(bright.east_west, tright.east_west);
562 min_eas = MIN(bleft.east_west, tleft.east_west);
564 start_nor = MAX(min_nor, dem->min_north);
565 end_nor = MIN(max_nor, dem->max_north);
566 if ( tleft.utm_zone == dem->utm_zone && bleft.utm_zone == dem->utm_zone
567 && (tleft.utm_letter >= 'N') == (dem->utm_letter >= 'N')
568 && (bleft.utm_letter >= 'N') == (dem->utm_letter >= 'N') ) /* if the utm zones/hemispheres are different, min_eas will be bogus */
569 start_eas = MAX(min_eas, dem->min_east);
571 start_eas = dem->min_east;
572 if ( tright.utm_zone == dem->utm_zone && bright.utm_zone == dem->utm_zone
573 && (tright.utm_letter >= 'N') == (dem->utm_letter >= 'N')
574 && (bright.utm_letter >= 'N') == (dem->utm_letter >= 'N') ) /* if the utm zones/hemispheres are different, min_eas will be bogus */
575 end_eas = MIN(max_eas, dem->max_east);
577 end_eas = dem->max_east;
579 start_nor = floor(start_nor / dem->north_scale) * dem->north_scale;
580 end_nor = ceil (end_nor / dem->north_scale) * dem->north_scale;
581 start_eas = floor(start_eas / dem->east_scale) * dem->east_scale;
582 end_eas = ceil (end_eas / dem->east_scale) * dem->east_scale;
584 vik_dem_east_north_to_xy ( dem, start_eas, start_nor, &start_x, &start_y );
586 /* TODO: why start_x and start_y are -1 -- rounding error from above? */
588 counter.zone = dem->utm_zone;
589 counter.letter = dem->utm_letter;
591 for ( x=start_x, counter.easting = start_eas; counter.easting <= end_eas; counter.easting += dem->east_scale * skip_factor, x += skip_factor ) {
592 if ( x > 0 && x < dem->n_columns ) {
593 column = g_ptr_array_index ( dem->columns, x );
594 for ( y=start_y, counter.northing = start_nor; counter.northing <= end_nor; counter.northing += dem->north_scale * skip_factor, y += skip_factor ) {
595 if ( y > column->n_points )
597 elev = column->points[y];
598 if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev )
600 if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev )
605 vik_coord_load_from_utm(&tmp, vik_viewport_get_coord_mode(vp), &counter);
606 vik_viewport_coord_to_screen(vp, &tmp, &a, &b);
607 if ( elev == VIK_DEM_INVALID_ELEVATION )
608 ; /* don't draw it */
609 else if ( elev <= 0 )
610 vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, a-2, b-2, 4, 4 );
612 vik_viewport_draw_rectangle(vp, vdl->gcs[(gint)floor((elev - vdl->min_elev)/(vdl->max_elev - vdl->min_elev)*(DEM_N_COLORS-2))+1], TRUE, a-2, b-2, 4, 4 );
620 /* return the continent for the specified lat, lon */
622 static const gchar *srtm_continent_dir ( gint lat, gint lon )
624 extern const char *_srtm_continent_data[];
625 static GHashTable *srtm_continent = NULL;
626 const gchar *continent;
629 if (!srtm_continent) {
632 srtm_continent = g_hash_table_new(g_str_hash, g_str_equal);
633 s = _srtm_continent_data;
634 while (*s != (gchar *)-1) {
637 g_hash_table_insert(srtm_continent, (gpointer) *s, (gpointer) continent);
643 g_snprintf(name, sizeof(name), "%c%02d%c%03d",
644 (lat >= 0) ? 'N' : 'S', ABS(lat),
645 (lon >= 0) ? 'E' : 'W', ABS(lon));
647 return(g_hash_table_lookup(srtm_continent, name));
650 void vik_dem_layer_draw ( VikDEMLayer *vdl, gpointer data )
652 VikViewport *vp = (VikViewport *) data;
653 GList *dems_iter = vdl->files;
657 /* search for SRTM3 90m */
659 if ( vdl->source == DEM_SOURCE_SRTM )
660 srtm_draw_existence ( vp );
661 #ifdef VIK_CONFIG_DEM24K
662 else if ( vdl->source == DEM_SOURCE_DEM24K )
663 dem24k_draw_existence ( vp );
666 while ( dems_iter ) {
667 dem = a_dems_get ( (const char *) (dems_iter->data) );
669 vik_dem_layer_draw_dem ( vdl, vp, dem );
670 dems_iter = dems_iter->next;
674 void vik_dem_layer_free ( VikDEMLayer *vdl )
677 if ( vdl->gc != NULL )
678 g_object_unref ( G_OBJECT(vdl->gc) );
680 if ( vdl->color != NULL )
681 g_free ( vdl->color );
684 for ( i = 0; i < DEM_N_COLORS; i++ )
685 g_object_unref ( vdl->gcs[i] );
688 a_dems_list_free ( vdl->files );
691 static void dem_layer_update_gc ( VikDEMLayer *vdl, VikViewport *vp, const gchar *color )
694 g_free ( vdl->color );
696 vdl->color = g_strdup ( color );
699 g_object_unref ( G_OBJECT(vdl->gc) );
701 vdl->gc = vik_viewport_new_gc ( vp, vdl->color, vdl->line_thickness );
704 VikDEMLayer *vik_dem_layer_create ( VikViewport *vp )
706 VikDEMLayer *vdl = vik_dem_layer_new ();
709 /* TODO: share GCS between layers */
710 for ( i = 0; i < DEM_N_COLORS; i++ )
711 vdl->gcs[i] = vik_viewport_new_gc ( vp, dem_colors[i], vdl->line_thickness );
713 dem_layer_update_gc ( vdl, vp, "red" );
716 /**************************************************************
717 **** SOURCES & DOWNLOADING
718 **************************************************************/
724 VikDEMLayer *vdl; /* NULL if not alive */
730 /**************************************************
732 **************************************************/
734 static void srtm_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata )
737 const gchar *continent_dir;
739 intlat = (int)floor(p->lat);
740 intlon = (int)floor(p->lon);
741 continent_dir = srtm_continent_dir(intlat, intlon);
743 if (!continent_dir) {
744 g_warning(N_("No SRTM data available for %f, %f"), p->lat, p->lon);
748 gchar *src_fn = g_strdup_printf("%s%s%s%c%02d%c%03d.hgt.zip",
752 (intlat >= 0) ? 'N' : 'S',
754 (intlon >= 0) ? 'E' : 'W',
757 static DownloadOptions options = { NULL, 0, a_check_map_file };
758 a_ftp_download_get_url ( SRTM_FTP_SITE, src_fn, p->dest, &options );
762 static gchar *srtm_lat_lon_to_dest_fn ( gdouble lat, gdouble lon )
765 const gchar *continent_dir;
767 intlat = (int)floor(lat);
768 intlon = (int)floor(lon);
769 continent_dir = srtm_continent_dir(intlat, intlon);
772 continent_dir = "nowhere";
774 return g_strdup_printf("srtm3-%s%s%c%02d%c%03d.hgt.zip",
777 (intlat >= 0) ? 'N' : 'S',
779 (intlon >= 0) ? 'E' : 'W',
784 /* TODO: generalize */
785 static void srtm_draw_existence ( VikViewport *vp )
787 gdouble max_lat, max_lon, min_lat, min_lon;
788 gchar buf[strlen(MAPS_CACHE_DIR)+strlen(SRTM_CACHE_TEMPLATE)+30];
791 vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon );
793 for (i = floor(min_lat); i <= floor(max_lat); i++) {
794 for (j = floor(min_lon); j <= floor(max_lon); j++) {
795 const gchar *continent_dir;
796 if ((continent_dir = srtm_continent_dir(i, j)) == NULL)
798 g_snprintf(buf, sizeof(buf), SRTM_CACHE_TEMPLATE,
802 (i >= 0) ? 'N' : 'S',
804 (j >= 0) ? 'E' : 'W',
806 if ( g_file_test(buf, G_FILE_TEST_EXISTS ) == TRUE ) {
811 sw.mode = VIK_COORD_LATLON;
812 ne.north_south = i+1;
814 ne.mode = VIK_COORD_LATLON;
815 vik_viewport_coord_to_screen ( vp, &sw, &x1, &y1 );
816 vik_viewport_coord_to_screen ( vp, &ne, &x2, &y2 );
817 if ( x1 < 0 ) x1 = 0;
818 if ( y2 < 0 ) y2 = 0;
819 vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc,
820 FALSE, x1, y2, x2-x1, y1-y2 );
827 /**************************************************
829 **************************************************/
831 #ifdef VIK_CONFIG_DEM24K
833 static void dem24k_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata )
836 gchar *cmdline = g_strdup_printf("%s %.03f %.03f",
837 DEM24K_DOWNLOAD_SCRIPT,
840 /* FIX: don't use system, use execv or something. check for existence */
844 static gchar *dem24k_lat_lon_to_dest_fn ( gdouble lat, gdouble lon )
846 return g_strdup_printf("dem24k/%d/%d/%.03f,%.03f.dem",
853 /* TODO: generalize */
854 static void dem24k_draw_existence ( VikViewport *vp )
856 gdouble max_lat, max_lon, min_lat, min_lon;
857 gchar buf[strlen(MAPS_CACHE_DIR)+40];
860 vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon );
862 for (i = floor(min_lat*8)/8; i <= floor(max_lat*8)/8; i+=0.125) {
863 /* check lat dir first -- faster */
864 g_snprintf(buf, sizeof(buf), "%sdem24k/%d/",
867 if ( g_file_test(buf, G_FILE_TEST_EXISTS) == FALSE )
869 for (j = floor(min_lon*8)/8; j <= floor(max_lon*8)/8; j+=0.125) {
870 /* check lon dir first -- faster */
871 g_snprintf(buf, sizeof(buf), "%sdem24k/%d/%d/",
875 if ( g_file_test(buf, G_FILE_TEST_EXISTS) == FALSE )
877 g_snprintf(buf, sizeof(buf), "%sdem24k/%d/%d/%.03f,%.03f.dem",
883 if ( g_file_test(buf, G_FILE_TEST_EXISTS ) == TRUE ) {
887 sw.east_west = j-0.125;
888 sw.mode = VIK_COORD_LATLON;
889 ne.north_south = i+0.125;
891 ne.mode = VIK_COORD_LATLON;
892 vik_viewport_coord_to_screen ( vp, &sw, &x1, &y1 );
893 vik_viewport_coord_to_screen ( vp, &ne, &x2, &y2 );
894 if ( x1 < 0 ) x1 = 0;
895 if ( y2 < 0 ) y2 = 0;
896 vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc,
897 FALSE, x1, y2, x2-x1, y1-y2 );
904 /**************************************************
905 * SOURCES -- DOWNLOADING & IMPORTING TOOL *
906 **************************************************
909 static void weak_ref_cb ( gpointer ptr, GObject * dead_vdl )
911 DEMDownloadParams *p = ptr;
912 g_mutex_lock ( p->mutex );
914 g_mutex_unlock ( p->mutex );
917 /* Try to add file full_path.
918 * full_path will be copied.
919 * returns FALSE if file does not exists, TRUE otherwise.
921 static gboolean dem_layer_add_file ( VikDEMLayer *vdl, const gchar *full_path )
923 if ( g_file_test(full_path, G_FILE_TEST_EXISTS ) == TRUE ) {
924 /* only load if file size is not 0 (not in progress) */
926 stat (full_path, &sb);
928 gchar *duped_path = g_strdup(full_path);
929 vdl->files = g_list_prepend ( vdl->files, duped_path );
930 a_dems_load ( duped_path );
931 g_debug("%s: %s", __FUNCTION__, duped_path);
932 vik_layer_emit_update ( VIK_LAYER(vdl) );
939 static void dem_download_thread ( DEMDownloadParams *p, gpointer threaddata )
941 if ( p->source == DEM_SOURCE_SRTM )
942 srtm_dem_download_thread ( p, threaddata );
943 #ifdef VIK_CONFIG_DEM24K
944 else if ( p->source == DEM_SOURCE_DEM24K )
945 dem24k_dem_download_thread ( p, threaddata );
949 g_mutex_lock ( p->mutex );
951 g_object_weak_unref ( G_OBJECT(p->vdl), weak_ref_cb, p );
953 if ( dem_layer_add_file ( p->vdl, p->dest ) )
954 vik_layer_emit_update ( VIK_LAYER(p->vdl) );
956 g_mutex_unlock ( p->mutex );
961 static void free_dem_download_params ( DEMDownloadParams *p )
963 g_mutex_free ( p->mutex );
968 static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp)
974 static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp )
980 gchar *dem_file = NULL;
982 if ( vdl->source == DEM_SOURCE_NONE )
983 a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_LAYER(vdl), _("No download source selected. Edit layer properties.") );
985 vik_viewport_screen_to_coord ( vvp, event->x, event->y, &coord );
986 vik_coord_to_latlon ( &coord, &ll );
989 if ( vdl->source == DEM_SOURCE_SRTM )
990 dem_file = srtm_lat_lon_to_dest_fn ( ll.lat, ll.lon );
991 #ifdef VIK_CONFIG_DEM24K
992 else if ( vdl->source == DEM_SOURCE_DEM24K )
993 dem_file = dem24k_lat_lon_to_dest_fn ( ll.lat, ll.lon );
999 full_path = g_strdup_printf("%s%s", MAPS_CACHE_DIR, dem_file );
1001 g_debug("%s: %s", __FUNCTION__, full_path);
1003 // TODO: check if already in filelist
1005 if ( ! dem_layer_add_file(vdl, full_path) ) {
1006 gchar *tmp = g_strdup_printf ( _("Downloading DEM %s"), dem_file );
1007 DEMDownloadParams *p = g_malloc(sizeof(DEMDownloadParams));
1008 p->dest = g_strdup(full_path);
1012 p->mutex = g_mutex_new();
1013 p->source = vdl->source;
1014 g_object_weak_ref(G_OBJECT(p->vdl), weak_ref_cb, p );
1016 a_background_thread ( VIK_GTK_WINDOW_FROM_LAYER(vdl), tmp,
1017 (vik_thr_func) dem_download_thread, p,
1018 (vik_thr_free_func) free_dem_download_params, NULL, 1 );
1021 g_free ( dem_file );
1022 g_free ( full_path );
1027 static gboolean dem_layer_download_click ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp )
1029 /* choose & keep track of cache dir
1030 * download in background thread
1031 * download over area */