* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
#include <math.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <string.h>
+#include <stdlib.h>
+#include <glib/gi18n.h>
+#include "config.h"
#include "globals.h"
#include "coords.h"
#include "vikcoord.h"
#include "download.h"
+#include "background.h"
#include "vikwaypoint.h"
#include "viktrack.h"
#include "vikviewport.h"
#include "vikaggregatelayer.h"
#include "viklayerspanel.h"
#include "vikdemlayer.h"
-#include "vikdemlayer_pixmap.h"
+#include "dialog.h"
#include "dem.h"
#include "dems.h"
-static VikDEMLayer *dem_layer_copy ( VikDEMLayer *vdl, gpointer vp );
+#include "icons/icons.h"
+
+#define MAPS_CACHE_DIR maps_layer_default_dir()
+
+#define SRTM_CACHE_TEMPLATE "%ssrtm3-%s%s%c%02d%c%03d.hgt.zip"
+#define SRTM_FTP_SITE "e0srp01u.ecs.nasa.gov"
+#define SRTM_FTP_URI "/srtm/version2/SRTM3/"
+
+#ifdef VIK_CONFIG_DEM24K
+#define DEM24K_DOWNLOAD_SCRIPT "dem24k.pl"
+#endif
+
+
static void dem_layer_marshall( VikDEMLayer *vdl, guint8 **data, gint *len );
static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp );
static gboolean dem_layer_set_param ( VikDEMLayer *vdl, guint16 id, VikLayerParamData data, VikViewport *vp );
static VikLayerParamData dem_layer_get_param ( VikDEMLayer *vdl, guint16 id );
static void dem_layer_update_gc ( VikDEMLayer *vdl, VikViewport *vp, const gchar *color );
-static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp );
+static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file );
+static void srtm_draw_existence ( VikViewport *vp );
+
+#ifdef VIK_CONFIG_DEM24K
+static void dem24k_draw_existence ( VikViewport *vp );
+#endif
static VikLayerParamScale param_scales[] = {
+ { 1, 10000, 10, 1 },
{ 1, 10000, 10, 1 },
{ 1, 10, 1, 0 },
};
+static gchar *params_source[] = {
+ "SRTM Global 90m (3 arcsec)",
+#ifdef VIK_CONFIG_DEM24K
+ "USA 10m (USGS 24k)",
+#endif
+ "None",
+ NULL
+ };
+
+enum { DEM_SOURCE_SRTM,
+#ifdef VIK_CONFIG_DEM24K
+ DEM_SOURCE_DEM24K,
+#endif
+ DEM_SOURCE_NONE,
+ };
+
static VikLayerParam dem_layer_params[] = {
- { "files", VIK_LAYER_PARAM_STRING_LIST, VIK_LAYER_GROUP_NONE, "DEM Files:", VIK_LAYER_WIDGET_FILELIST },
- { "color", VIK_LAYER_PARAM_STRING, VIK_LAYER_GROUP_NONE, "Color:", VIK_LAYER_WIDGET_ENTRY },
- { "max_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, "Max Elev:", VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 },
- { "line_thickness", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, "Line Thickness:", VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 1 },
+ { "files", VIK_LAYER_PARAM_STRING_LIST, VIK_LAYER_GROUP_NONE, N_("DEM Files:"), VIK_LAYER_WIDGET_FILELIST },
+ { "source", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Download Source:"), VIK_LAYER_WIDGET_RADIOGROUP_STATIC, params_source, NULL },
+ { "color", VIK_LAYER_PARAM_STRING, VIK_LAYER_GROUP_NONE, N_("Color:"), VIK_LAYER_WIDGET_ENTRY },
+ { "min_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Min Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 },
+ { "max_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Max Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 },
+ { "line_thickness", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Line Thickness:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 1 },
+};
+
+
+enum { PARAM_FILES=0, PARAM_SOURCE, PARAM_COLOR, PARAM_MIN_ELEV, PARAM_MAX_ELEV, PARAM_LINE_THICKNESS, NUM_PARAMS };
+
+static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp);
+static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp );
+static gboolean dem_layer_download_click ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp );
+
+static VikToolInterface dem_tools[] = {
+ { N_("DEM Download/Import"), (VikToolConstructorFunc) dem_layer_download_create, NULL, NULL, NULL,
+ (VikToolMouseFunc) dem_layer_download_click, NULL, (VikToolMouseFunc) dem_layer_download_release,
+ (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_demdl_pixbuf },
};
+
/*
*/
-
static gchar *dem_colors[] = {
"#0000FF",
"#9b793c",
};
*/
-static const guint dem_n_colors = sizeof(dem_colors)/sizeof(dem_colors[0]);
+static const guint DEM_N_COLORS = sizeof(dem_colors)/sizeof(dem_colors[0]);
-enum { PARAM_FILES=0, PARAM_COLOR, PARAM_MAX_ELEV, PARAM_LINE_THICKNESS, NUM_PARAMS };
VikLayerInterface vik_dem_layer_interface = {
"DEM",
- &demlayer_pixbuf,
+ &vikdemlayer_pixbuf,
- NULL,
- 0,
+ dem_tools,
+ sizeof(dem_tools) / sizeof(dem_tools[0]),
dem_layer_params,
NUM_PARAMS,
(VikLayerFuncSublayerRenameRequest) NULL,
(VikLayerFuncSublayerToggleVisible) NULL,
- (VikLayerFuncCopy) dem_layer_copy,
(VikLayerFuncMarshall) dem_layer_marshall,
(VikLayerFuncUnmarshall) dem_layer_unmarshall,
GdkGC *gc;
GdkGC **gcs;
GList *files;
+ gdouble min_elev;
gdouble max_elev;
guint8 line_thickness;
gchar *color;
+ guint source;
};
GType vik_dem_layer_get_type ()
return vdl_type;
}
-static VikDEMLayer *dem_layer_copy ( VikDEMLayer *vdl, gpointer vp )
-{
- VikDEMLayer *rv = vik_dem_layer_new ( );
-
-
- /* TODO -- FIX for files */
-
- rv->color = g_strdup ( vdl->color );
- rv->max_elev = vdl->max_elev;
- rv->line_thickness = vdl->line_thickness;
- rv->gc = vdl->gc;
- g_object_ref ( rv->gc );
- return rv;
-}
-
static void dem_layer_marshall( VikDEMLayer *vdl, guint8 **data, gint *len )
{
vik_layer_marshall_params ( VIK_LAYER(vdl), data, len );
static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp )
{
- VikDEMLayer *rv = vik_dem_layer_new ( vvp );
+ VikDEMLayer *rv = vik_dem_layer_new ();
+ gint i;
+
+ /* TODO: share GCS between layers */
+ for ( i = 0; i < DEM_N_COLORS; i++ )
+ rv->gcs[i] = vik_viewport_new_gc ( vvp, dem_colors[i], rv->line_thickness );
+
vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp );
return rv;
}
switch ( id )
{
case PARAM_COLOR: if ( vdl->color ) g_free ( vdl->color ); vdl->color = g_strdup ( data.s ); break;
+ case PARAM_SOURCE: vdl->source = data.u; break;
+ case PARAM_MIN_ELEV: vdl->min_elev = data.d; break;
case PARAM_MAX_ELEV: vdl->max_elev = data.d; break;
case PARAM_LINE_THICKNESS: if ( data.u >= 1 && data.u <= 15 ) vdl->line_thickness = data.u; break;
case PARAM_FILES: a_dems_load_list ( &(data.sl) ); a_dems_list_free ( vdl->files ); vdl->files = data.sl; break;
switch ( id )
{
case PARAM_FILES: rv.sl = vdl->files; break;
+ case PARAM_SOURCE: rv.u = vdl->source; break;
case PARAM_COLOR: rv.s = vdl->color ? vdl->color : ""; break;
+ case PARAM_MIN_ELEV: rv.d = vdl->min_elev; break;
case PARAM_MAX_ELEV: rv.d = vdl->max_elev; break;
case PARAM_LINE_THICKNESS: rv.i = vdl->line_thickness; break;
}
return rv;
}
-static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp )
+static void dem_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file )
{
VikDEMLayer *vdl = VIK_DEM_LAYER(vl);
if ( vdl->gc )
VikDEMLayer *vik_dem_layer_new ( )
{
VikDEMLayer *vdl = VIK_DEM_LAYER ( g_object_new ( VIK_DEM_LAYER_TYPE, NULL ) );
+
vik_layer_init ( VIK_LAYER(vdl), VIK_LAYER_DEM );
vdl->files = NULL;
vdl->gc = NULL;
- vdl->gcs = g_malloc(sizeof(GdkGC *)*dem_n_colors);
+ vdl->gcs = g_malloc(sizeof(GdkGC *)*DEM_N_COLORS);
+ /* make new gcs only if we need it (copy layer -> use old) */
+ vdl->min_elev = 0.0;
vdl->max_elev = 1000.0;
+ vdl->source = DEM_SOURCE_SRTM;
vdl->line_thickness = 3;
vdl->color = NULL;
return vdl;
}
+
static void vik_dem_layer_draw_dem ( VikDEMLayer *vdl, VikViewport *vp, VikDEM *dem )
{
- VikCoord tleft, tright, bleft, bright;
VikDEMColumn *column;
struct LatLon dem_northeast, dem_southwest;
gdouble max_lat, max_lon, min_lat, min_lon;
-
/**** Check if viewport and DEM data overlap ****/
/* get min, max lat/lon of viewport */
- vik_viewport_screen_to_coord ( vp, 0, 0, &tleft );
- vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &tright );
- vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &bleft );
- vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &bright );
-
- vik_coord_convert(&tleft, VIK_COORD_LATLON);
- vik_coord_convert(&tright, VIK_COORD_LATLON);
- vik_coord_convert(&bleft, VIK_COORD_LATLON);
- vik_coord_convert(&bright, VIK_COORD_LATLON);
-
- max_lat = MAX(tleft.north_south, tright.north_south);
- min_lat = MIN(bleft.north_south, bright.north_south);
- max_lon = MAX(tright.east_west, bright.east_west);
- min_lon = MIN(tleft.east_west, bleft.east_west);
+ vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon );
/* get min, max lat/lon of DEM data */
if ( dem->horiz_units == VIK_DEM_HORIZ_LL_ARCSECONDS ) {
/* else they overlap */
/**** End Overlap Check ****/
+ /* boxes to show where we have DEM instead of actually drawing the DEM.
+ * useful if we want to see what areas we have coverage for (if we want
+ * to get elevation data for a track) but don't want to cover the map.
+ */
+
+ #if 0
+ /* draw a box if a DEM is loaded. in future I'd like to add an option for this
+ * this is useful if we want to see what areas we have dem for but don't want to
+ * cover the map (or maybe we just need translucent DEM?) */
+ {
+ VikCoord demne, demsw;
+ gint x1, y1, x2, y2;
+ vik_coord_load_from_latlon(&demne, vik_viewport_get_coord_mode(vp), &dem_northeast);
+ vik_coord_load_from_latlon(&demsw, vik_viewport_get_coord_mode(vp), &dem_southwest);
+
+ vik_viewport_coord_to_screen ( vp, &demne, &x1, &y1 );
+ vik_viewport_coord_to_screen ( vp, &demsw, &x2, &y2 );
+
+ if ( x1 > vik_viewport_get_width(vp) ) x1=vik_viewport_get_width(vp);
+ if ( y2 > vik_viewport_get_height(vp) ) y2=vik_viewport_get_height(vp);
+ if ( x2 < 0 ) x2 = 0;
+ if ( y1 < 0 ) y1 = 0;
+ vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc,
+ FALSE, x2, y1, x1-x2, y2-y1 );
+ return;
+ }
+ #endif
if ( dem->horiz_units == VIK_DEM_HORIZ_LL_ARCSECONDS ) {
VikCoord tmp; /* TODO: don't use coord_load_from_latlon, especially if in latlon drawing mode */
vik_dem_east_north_to_xy ( dem, start_lon_as, start_lat_as, &start_x, &start_y );
+ /* verify sane elev interval */
+ if ( vdl->max_elev <= vdl->min_elev )
+ vdl->max_elev = vdl->min_elev + 1;
+
for ( x=start_x, counter.lon = start_lon; counter.lon <= end_lon; counter.lon += escale_deg * skip_factor, x += skip_factor ) {
if ( x > 0 && x < dem->n_columns ) {
column = g_ptr_array_index ( dem->columns, x );
if ( y > column->n_points )
break;
elev = column->points[y];
- if ( elev > vdl->max_elev ) elev=vdl->max_elev;
+
+ if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev )
+ elev=vdl->min_elev;
+ if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev )
+ elev=vdl->max_elev;
+
+
{
gint a, b;
else if ( elev <= 0 )
vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, a-2, b-2, 4, 4 );
else
- vik_viewport_draw_rectangle(vp, vdl->gcs[(gint)floor(elev/vdl->max_elev*(dem_n_colors-2))+1], TRUE, a-2, b-2, 4, 4 );
+ 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 );
}
} /* for y= */
}
guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 10 ); /* todo: smarter calculation. */
+ VikCoord tleft, tright, bleft, bright;
+
+ vik_viewport_screen_to_coord ( vp, 0, 0, &tleft );
+ vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &tright );
+ vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &bleft );
+ vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &bright );
+
+
vik_coord_convert(&tleft, VIK_COORD_UTM);
vik_coord_convert(&tright, VIK_COORD_UTM);
vik_coord_convert(&bleft, VIK_COORD_UTM);
if ( y > column->n_points )
continue;
elev = column->points[y];
- if ( elev > vdl->max_elev ) elev=vdl->max_elev;
+ if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev )
+ elev=vdl->min_elev;
+ if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev )
+ elev=vdl->max_elev;
+
{
gint a, b;
vik_coord_load_from_utm(&tmp, vik_viewport_get_coord_mode(vp), &counter);
else if ( elev <= 0 )
vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, a-2, b-2, 4, 4 );
else
- vik_viewport_draw_rectangle(vp, vdl->gcs[(gint)floor(elev/vdl->max_elev*(dem_n_colors-2))+1], TRUE, a-2, b-2, 4, 4 );
+ 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 );
}
} /* for y= */
}
}
}
+/* return the continent for the specified lat, lon */
+/* TODO */
+static const gchar *srtm_continent_dir ( gint lat, gint lon )
+{
+ extern const char *_srtm_continent_data[];
+ static GHashTable *srtm_continent = NULL;
+ const gchar *continent;
+ gchar name[16];
+
+ if (!srtm_continent) {
+ const gchar **s;
+
+ srtm_continent = g_hash_table_new(g_str_hash, g_str_equal);
+ s = _srtm_continent_data;
+ while (*s != (gchar *)-1) {
+ continent = *s++;
+ while (*s) {
+ g_hash_table_insert(srtm_continent, (gpointer) *s, (gpointer) continent);
+ s++;
+ }
+ s++;
+ }
+ }
+ g_snprintf(name, sizeof(name), "%c%02d%c%03d",
+ (lat >= 0) ? 'N' : 'S', ABS(lat),
+ (lon >= 0) ? 'E' : 'W', ABS(lon));
+
+ return(g_hash_table_lookup(srtm_continent, name));
+}
+
void vik_dem_layer_draw ( VikDEMLayer *vdl, gpointer data )
{
VikViewport *vp = (VikViewport *) data;
GList *dems_iter = vdl->files;
VikDEM *dem;
+
+
+ /* search for SRTM3 90m */
+
+ if ( vdl->source == DEM_SOURCE_SRTM )
+ srtm_draw_existence ( vp );
+#ifdef VIK_CONFIG_DEM24K
+ else if ( vdl->source == DEM_SOURCE_DEM24K )
+ dem24k_draw_existence ( vp );
+#endif
+
while ( dems_iter ) {
dem = a_dems_get ( (const char *) (dems_iter->data) );
if ( dem )
void vik_dem_layer_free ( VikDEMLayer *vdl )
{
+ gint i;
if ( vdl->gc != NULL )
g_object_unref ( G_OBJECT(vdl->gc) );
if ( vdl->color != NULL )
g_free ( vdl->color );
+ if ( vdl->gcs )
+ for ( i = 0; i < DEM_N_COLORS; i++ )
+ g_object_unref ( vdl->gcs[i] );
+ g_free ( vdl->gcs );
+
a_dems_list_free ( vdl->files );
}
static void dem_layer_update_gc ( VikDEMLayer *vdl, VikViewport *vp, const gchar *color )
{
- guint i;
-
if ( vdl->color )
g_free ( vdl->color );
g_object_unref ( G_OBJECT(vdl->gc) );
vdl->gc = vik_viewport_new_gc ( vp, vdl->color, vdl->line_thickness );
-
- for ( i = 0 ; i < dem_n_colors; i++ )
- vdl->gcs[i] = vik_viewport_new_gc ( vp, dem_colors[i], vdl->line_thickness );
-
}
VikDEMLayer *vik_dem_layer_create ( VikViewport *vp )
{
VikDEMLayer *vdl = vik_dem_layer_new ();
+ gint i;
+
+ /* TODO: share GCS between layers */
+ for ( i = 0; i < DEM_N_COLORS; i++ )
+ vdl->gcs[i] = vik_viewport_new_gc ( vp, dem_colors[i], vdl->line_thickness );
+
dem_layer_update_gc ( vdl, vp, "red" );
return vdl;
}
+/**************************************************************
+ **** SOURCES & DOWNLOADING
+ **************************************************************/
+typedef struct {
+ gchar *dest;
+ gdouble lat, lon;
+
+ GMutex *mutex;
+ VikDEMLayer *vdl; /* NULL if not alive */
+
+ guint source;
+} DEMDownloadParams;
+
+
+/**************************************************
+ * SOURCE: SRTM *
+ **************************************************/
+
+static void srtm_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata )
+{
+ gint intlat, intlon;
+ const gchar *continent_dir;
+
+ intlat = (int)floor(p->lat);
+ intlon = (int)floor(p->lon);
+ continent_dir = srtm_continent_dir(intlat, intlon);
+
+ if (!continent_dir) {
+ g_warning(N_("No SRTM data available for %f, %f"), p->lat, p->lon);
+ return;
+ }
+
+ gchar *src_fn = g_strdup_printf("%s%s%s%c%02d%c%03d.hgt.zip",
+ SRTM_FTP_URI,
+ continent_dir,
+ G_DIR_SEPARATOR_S,
+ (intlat >= 0) ? 'N' : 'S',
+ ABS(intlat),
+ (intlon >= 0) ? 'E' : 'W',
+ ABS(intlon) );
+
+ static DownloadOptions options = { NULL, 0, a_check_map_file };
+ a_ftp_download_get_url ( SRTM_FTP_SITE, src_fn, p->dest, &options );
+ g_free ( src_fn );
+}
+
+static gchar *srtm_lat_lon_to_dest_fn ( gdouble lat, gdouble lon )
+{
+ gint intlat, intlon;
+ const gchar *continent_dir;
+
+ intlat = (int)floor(lat);
+ intlon = (int)floor(lon);
+ continent_dir = srtm_continent_dir(intlat, intlon);
+
+ if (!continent_dir)
+ continent_dir = "nowhere";
+
+ return g_strdup_printf("srtm3-%s%s%c%02d%c%03d.hgt.zip",
+ continent_dir,
+ G_DIR_SEPARATOR_S,
+ (intlat >= 0) ? 'N' : 'S',
+ ABS(intlat),
+ (intlon >= 0) ? 'E' : 'W',
+ ABS(intlon) );
+
+}
+
+/* TODO: generalize */
+static void srtm_draw_existence ( VikViewport *vp )
+{
+ gdouble max_lat, max_lon, min_lat, min_lon;
+ gchar buf[strlen(MAPS_CACHE_DIR)+strlen(SRTM_CACHE_TEMPLATE)+30];
+ gint i, j;
+
+ vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon );
+
+ for (i = floor(min_lat); i <= floor(max_lat); i++) {
+ for (j = floor(min_lon); j <= floor(max_lon); j++) {
+ const gchar *continent_dir;
+ if ((continent_dir = srtm_continent_dir(i, j)) == NULL)
+ continue;
+ g_snprintf(buf, sizeof(buf), SRTM_CACHE_TEMPLATE,
+ MAPS_CACHE_DIR,
+ continent_dir,
+ G_DIR_SEPARATOR_S,
+ (i >= 0) ? 'N' : 'S',
+ ABS(i),
+ (j >= 0) ? 'E' : 'W',
+ ABS(j) );
+ if ( g_file_test(buf, G_FILE_TEST_EXISTS ) == TRUE ) {
+ VikCoord ne, sw;
+ gint x1, y1, x2, y2;
+ sw.north_south = i;
+ sw.east_west = j;
+ sw.mode = VIK_COORD_LATLON;
+ ne.north_south = i+1;
+ ne.east_west = j+1;
+ ne.mode = VIK_COORD_LATLON;
+ vik_viewport_coord_to_screen ( vp, &sw, &x1, &y1 );
+ vik_viewport_coord_to_screen ( vp, &ne, &x2, &y2 );
+ if ( x1 < 0 ) x1 = 0;
+ if ( y2 < 0 ) y2 = 0;
+ vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc,
+ FALSE, x1, y2, x2-x1, y1-y2 );
+ }
+ }
+ }
+}
+
+
+/**************************************************
+ * SOURCE: USGS 24K *
+ **************************************************/
+
+#ifdef VIK_CONFIG_DEM24K
+
+static void dem24k_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata )
+{
+ /* TODO: dest dir */
+ gchar *cmdline = g_strdup_printf("%s %.03f %.03f",
+ DEM24K_DOWNLOAD_SCRIPT,
+ floor(p->lat*8)/8,
+ ceil(p->lon*8)/8 );
+ /* FIX: don't use system, use execv or something. check for existence */
+ system(cmdline);
+}
+
+static gchar *dem24k_lat_lon_to_dest_fn ( gdouble lat, gdouble lon )
+{
+ return g_strdup_printf("dem24k/%d/%d/%.03f,%.03f.dem",
+ (gint) lat,
+ (gint) lon,
+ floor(lat*8)/8,
+ ceil(lon*8)/8);
+}
+
+/* TODO: generalize */
+static void dem24k_draw_existence ( VikViewport *vp )
+{
+ gdouble max_lat, max_lon, min_lat, min_lon;
+ gchar buf[strlen(MAPS_CACHE_DIR)+40];
+ gdouble i, j;
+
+ vik_viewport_get_min_max_lat_lon ( vp, &min_lat, &max_lat, &min_lon, &max_lon );
+
+ for (i = floor(min_lat*8)/8; i <= floor(max_lat*8)/8; i+=0.125) {
+ /* check lat dir first -- faster */
+ g_snprintf(buf, sizeof(buf), "%sdem24k/%d/",
+ MAPS_CACHE_DIR,
+ (gint) i );
+ if ( g_file_test(buf, G_FILE_TEST_EXISTS) == FALSE )
+ continue;
+ for (j = floor(min_lon*8)/8; j <= floor(max_lon*8)/8; j+=0.125) {
+ /* check lon dir first -- faster */
+ g_snprintf(buf, sizeof(buf), "%sdem24k/%d/%d/",
+ MAPS_CACHE_DIR,
+ (gint) i,
+ (gint) j );
+ if ( g_file_test(buf, G_FILE_TEST_EXISTS) == FALSE )
+ continue;
+ g_snprintf(buf, sizeof(buf), "%sdem24k/%d/%d/%.03f,%.03f.dem",
+ MAPS_CACHE_DIR,
+ (gint) i,
+ (gint) j,
+ floor(i*8)/8,
+ floor(j*8)/8 );
+ if ( g_file_test(buf, G_FILE_TEST_EXISTS ) == TRUE ) {
+ VikCoord ne, sw;
+ gint x1, y1, x2, y2;
+ sw.north_south = i;
+ sw.east_west = j-0.125;
+ sw.mode = VIK_COORD_LATLON;
+ ne.north_south = i+0.125;
+ ne.east_west = j;
+ ne.mode = VIK_COORD_LATLON;
+ vik_viewport_coord_to_screen ( vp, &sw, &x1, &y1 );
+ vik_viewport_coord_to_screen ( vp, &ne, &x2, &y2 );
+ if ( x1 < 0 ) x1 = 0;
+ if ( y2 < 0 ) y2 = 0;
+ vik_viewport_draw_rectangle ( vp, GTK_WIDGET(vp)->style->black_gc,
+ FALSE, x1, y2, x2-x1, y1-y2 );
+ }
+ }
+ }
+}
+#endif
+
+/**************************************************
+ * SOURCES -- DOWNLOADING & IMPORTING TOOL *
+ **************************************************
+ */
+
+static void weak_ref_cb ( gpointer ptr, GObject * dead_vdl )
+{
+ DEMDownloadParams *p = ptr;
+ g_mutex_lock ( p->mutex );
+ p->vdl = NULL;
+ g_mutex_unlock ( p->mutex );
+}
+
+/* Try to add file full_path.
+ * full_path will be copied.
+ * returns FALSE if file does not exists, TRUE otherwise.
+ */
+static gboolean dem_layer_add_file ( VikDEMLayer *vdl, const gchar *full_path )
+{
+ if ( g_file_test(full_path, G_FILE_TEST_EXISTS ) == TRUE ) {
+ /* only load if file size is not 0 (not in progress) */
+ struct stat sb;
+ stat (full_path, &sb);
+ if ( sb.st_size ) {
+ gchar *duped_path = g_strdup(full_path);
+ vdl->files = g_list_prepend ( vdl->files, duped_path );
+ a_dems_load ( duped_path );
+ g_debug("%s: %s", __FUNCTION__, duped_path);
+ vik_layer_emit_update ( VIK_LAYER(vdl) );
+ }
+ return TRUE;
+ } else
+ return FALSE;
+}
+
+static void dem_download_thread ( DEMDownloadParams *p, gpointer threaddata )
+{
+ if ( p->source == DEM_SOURCE_SRTM )
+ srtm_dem_download_thread ( p, threaddata );
+#ifdef VIK_CONFIG_DEM24K
+ else if ( p->source == DEM_SOURCE_DEM24K )
+ dem24k_dem_download_thread ( p, threaddata );
+#endif
+
+ gdk_threads_enter();
+ g_mutex_lock ( p->mutex );
+ if ( p->vdl ) {
+ g_object_weak_unref ( G_OBJECT(p->vdl), weak_ref_cb, p );
+
+ if ( dem_layer_add_file ( p->vdl, p->dest ) )
+ vik_layer_emit_update ( VIK_LAYER(p->vdl) );
+ }
+ g_mutex_unlock ( p->mutex );
+ gdk_threads_leave();
+}
+
+
+static void free_dem_download_params ( DEMDownloadParams *p )
+{
+ g_mutex_free ( p->mutex );
+ g_free ( p->dest );
+ g_free ( p );
+}
+
+static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp)
+{
+ return vvp;
+}
+
+
+static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp )
+{
+ VikCoord coord;
+ struct LatLon ll;
+
+ gchar *full_path;
+ gchar *dem_file = NULL;
+
+ if ( vdl->source == DEM_SOURCE_NONE )
+ a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_LAYER(vdl), _("No download source selected. Edit layer properties.") );
+
+ vik_viewport_screen_to_coord ( vvp, event->x, event->y, &coord );
+ vik_coord_to_latlon ( &coord, &ll );
+
+
+ if ( vdl->source == DEM_SOURCE_SRTM )
+ dem_file = srtm_lat_lon_to_dest_fn ( ll.lat, ll.lon );
+#ifdef VIK_CONFIG_DEM24K
+ else if ( vdl->source == DEM_SOURCE_DEM24K )
+ dem_file = dem24k_lat_lon_to_dest_fn ( ll.lat, ll.lon );
+#endif
+
+ if ( ! dem_file )
+ return TRUE;
+
+ full_path = g_strdup_printf("%s%s", MAPS_CACHE_DIR, dem_file );
+
+ g_debug("%s: %s", __FUNCTION__, full_path);
+
+ // TODO: check if already in filelist
+
+ if ( ! dem_layer_add_file(vdl, full_path) ) {
+ gchar *tmp = g_strdup_printf ( _("Downloading DEM %s"), dem_file );
+ DEMDownloadParams *p = g_malloc(sizeof(DEMDownloadParams));
+ p->dest = g_strdup(full_path);
+ p->lat = ll.lat;
+ p->lon = ll.lon;
+ p->vdl = vdl;
+ p->mutex = g_mutex_new();
+ p->source = vdl->source;
+ g_object_weak_ref(G_OBJECT(p->vdl), weak_ref_cb, p );
+
+ a_background_thread ( VIK_GTK_WINDOW_FROM_LAYER(vdl), tmp,
+ (vik_thr_func) dem_download_thread, p,
+ (vik_thr_free_func) free_dem_download_params, NULL, 1 );
+ }
+
+ g_free ( dem_file );
+ g_free ( full_path );
+
+ return TRUE;
+}
+
+static gboolean dem_layer_download_click ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp )
+{
+/* choose & keep track of cache dir
+ * download in background thread
+ * download over area */
+ return TRUE;
+}
+
projects / andy / viking.git / blobdiff