Pileus Git - aweather/blob - src/plugins/radar.c

   1 /*
   2  * Copyright (C) 2009-2010 Andy Spencer <andy753421@gmail.com>
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #define _XOPEN_SOURCE
  19 #include <sys/time.h>
  20 #include <config.h>
  21 #include <glib/gstdio.h>
  22 #include <gtk/gtk.h>
  23 #include <gtk/gtkgl.h>
  24 #include <gio/gio.h>
  25 #include <GL/gl.h>
  26 #include <math.h>
  27 #include <rsl.h>
  28
  29 #include <gis.h>
  30
  31 #include "radar.h"
  32 #include "level2.h"
  33 #include "../aweather-location.h"
  34
  35 GtkWidget *_gtk_check_label_new(const gchar *text, gboolean state,
  36                 GCallback on_clicked, gpointer user_data)
  37 {
  38         GtkWidget *hbox  = gtk_hbox_new(FALSE, 0);
  39         GtkWidget *check = gtk_check_button_new();
  40         GtkWidget *label = gtk_label_new(text);
  41         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), state);
  42         g_signal_connect_swapped(check , "clicked",
  43                         G_CALLBACK(on_clicked), user_data);
  44         gtk_box_pack_start(GTK_BOX(hbox), label, TRUE, TRUE, 0);
  45         gtk_box_pack_end(GTK_BOX(hbox), check , FALSE, FALSE, 0);
  46         gtk_widget_show_all(hbox);
  47         return hbox;
  48 }
  49
  50 void _gtk_bin_set_child(GtkBin *bin, GtkWidget *new)
  51 {
  52         GtkWidget *old = gtk_bin_get_child(bin);
  53         if (old)
  54                 gtk_widget_destroy(old);
  55         gtk_container_add(GTK_CONTAINER(bin), new);
  56         gtk_widget_show_all(new);
  57 }
  58
  59 static gchar *_find_nearest(time_t time, GList *files,
  60                 gsize offset, gchar *format)
  61 {
  62         g_debug("GisPluginRadar: _find_nearest ...");
  63         time_t  nearest_time = 0;
  64         char   *nearest_file = NULL;
  65
  66         struct tm tm = {};
  67         for (GList *cur = files; cur; cur = cur->next) {
  68                 gchar *file = cur->data;
  69                 strptime(file+offset, format, &tm);
  70                 if (ABS(time - mktime(&tm)) <
  71                     ABS(time - nearest_time)) {
  72                         nearest_file = file;
  73                         nearest_time = mktime(&tm);
  74                 }
  75         }
  76
  77         g_debug("GisPluginRadar: _find_nearest = %s", nearest_file);
  78         if (nearest_file)
  79                 return g_strdup(nearest_file);
  80         else
  81                 return NULL;
  82 }
  83
  84
  85 /**************
  86  * RadarSites *
  87  **************/
  88 typedef enum {
  89         STATUS_UNLOADED,
  90         STATUS_LOADING,
  91         STATUS_LOADED,
  92 } RadarSiteStatus;
  93 struct _RadarSite {
  94         /* Information */
  95         city_t    *city;
  96         GisMarker *marker;     // Map marker for libgis
  97         gpointer  *marker_ref; // Reference to maker
  98
  99         /* Stuff from the parents */
 100         GisViewer     *viewer;
 101         GisHttp       *http;
 102         GisPrefs      *prefs;
 103         GtkWidget     *pconfig;
 104
 105         /* When loaded */
 106         gboolean        hidden;
 107         RadarSiteStatus status;     // Loading status for the site
 108         GtkWidget      *config;
 109         AWeatherLevel2 *level2;     // The Level2 structure for the current volume
 110         gpointer        level2_ref; // GisViewer reference to the added radar
 111
 112         /* Internal data */
 113         time_t   time;        // Current timestamp of the level2
 114         gchar   *message;     // Error message set while updating
 115         guint    time_id;     // "time-changed"     callback ID
 116         guint    refresh_id;  // "refresh"          callback ID
 117         guint    location_id; // "locaiton-changed" callback ID
 118 };
 119
 120 /* format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323 */
 121 void _site_update_loading(gchar *file, goffset cur,
 122                 goffset total, gpointer _site)
 123 {
 124         RadarSite *site = _site;
 125         GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(site->config));
 126         double percent = (double)cur/total;
 127         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0));
 128         gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)",
 129                         percent*100, (double)cur/1000000, (double)total/1000000);
 130         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg);
 131         g_free(msg);
 132 }
 133 gboolean _site_update_end(gpointer _site)
 134 {
 135         RadarSite *site = _site;
 136         if (site->message) {
 137                 g_warning("GisPluginRadar: _update_end - %s", site->message);
 138                 _gtk_bin_set_child(GTK_BIN(site->config), gtk_label_new(site->message));
 139         } else {
 140                 _gtk_bin_set_child(GTK_BIN(site->config),
 141                                 aweather_level2_get_config(site->level2));
 142         }
 143         site->status = STATUS_LOADED;
 144         return FALSE;
 145 }
 146 gpointer _site_update_thread(gpointer _site)
 147 {
 148         RadarSite *site = _site;
 149         g_debug("GisPluginRadar: _site_update_thread - %s", site->city->code);
 150         site->message = NULL;
 151
 152         gboolean offline = gis_viewer_get_offline(site->viewer);
 153         gchar *nexrad_url = gis_prefs_get_string(site->prefs,
 154                         "aweather/nexrad_url", NULL);
 155
 156         /* Find nearest volume (temporally) */
 157         g_debug("GisPluginRadar: _site_update_thread - find nearest - %s", site->city->code);
 158         gchar *dir_list = g_strconcat(nexrad_url, "/", site->city->code,
 159                         "/", "dir.list", NULL);
 160         GList *files = gis_http_available(site->http,
 161                         "^K\\w{3}_\\d{8}_\\d{4}$", site->city->code,
 162                         "\\d+ (.*)", (offline ? NULL : dir_list));
 163         g_free(dir_list);
 164         gchar *nearest = _find_nearest(site->time, files, 5, "%Y%m%d_%H%M");
 165         g_list_foreach(files, (GFunc)g_free, NULL);
 166         g_list_free(files);
 167         if (!nearest) {
 168                 site->message = "No suitable files found";
 169                 goto out;
 170         }
 171
 172         /* Fetch new volume */
 173         g_debug("GisPluginRadar: _site_update_thread - fetch");
 174         gchar *local = g_strconcat(site->city->code, "/", nearest, NULL);
 175         gchar *uri   = g_strconcat(nexrad_url, "/", local,   NULL);
 176         gchar *file = gis_http_fetch(site->http, uri, local,
 177                         offline ? GIS_LOCAL : GIS_UPDATE,
 178                         _site_update_loading, site);
 179         g_free(nexrad_url);
 180         g_free(nearest);
 181         g_free(local);
 182         g_free(uri);
 183         if (!file) {
 184                 site->message = "Fetch failed";
 185                 goto out;
 186         }
 187
 188         /* Load and add new volume */
 189         g_debug("GisPluginRadar: _site_update_thread - load - %s", site->city->code);
 190         site->level2 = aweather_level2_new_from_file(
 191                         site->viewer, colormaps, file, site->city->code);
 192         g_free(file);
 193         if (!site->level2) {
 194                 site->message = "Load failed";
 195                 goto out;
 196         }
 197         GIS_OBJECT(site->level2)->hidden = site->hidden;
 198         site->level2_ref = gis_viewer_add(site->viewer,
 199                         GIS_OBJECT(site->level2), GIS_LEVEL_WORLD, TRUE);
 200
 201 out:
 202         g_idle_add(_site_update_end, site);
 203         return NULL;
 204 }
 205 void _site_update(RadarSite *site)
 206 {
 207         if (site->status == STATUS_LOADING)
 208                 return;
 209         site->status = STATUS_LOADING;
 210
 211         site->time = gis_viewer_get_time(site->viewer);
 212         g_debug("GisPluginRadar: _site_update %s - %d",
 213                         site->city->code, (gint)site->time);
 214
 215         /* Add a progress bar */
 216         GtkWidget *progress = gtk_progress_bar_new();
 217         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 218         _gtk_bin_set_child(GTK_BIN(site->config), progress);
 219
 220         /* Remove old volume */
 221         g_debug("GisPluginRadar: _site_update - remove - %s", site->city->code);
 222         if (site->level2_ref) {
 223                 gis_viewer_remove(site->viewer, site->level2_ref);
 224                 site->level2_ref = NULL;
 225         }
 226
 227         /* Fork loading right away so updating the
 228          * list of times doesn't take too long */
 229         g_thread_create(_site_update_thread, site, FALSE, NULL);
 230 }
 231
 232 /* RadarSite methods */
 233 void radar_site_unload(RadarSite *site)
 234 {
 235         if (site->status != STATUS_LOADED)
 236                 return; // Abort if it's still loading
 237
 238         g_debug("GisPluginRadar: radar_site_unload %s", site->city->code);
 239
 240         if (site->time_id)
 241                 g_signal_handler_disconnect(site->viewer, site->time_id);
 242         if (site->refresh_id)
 243                 g_signal_handler_disconnect(site->viewer, site->refresh_id);
 244
 245         /* Remove tab */
 246         if (site->config)
 247                 gtk_widget_destroy(site->config);
 248
 249         /* Remove radar */
 250         if (site->level2_ref) {
 251                 gis_viewer_remove(site->viewer, site->level2_ref);
 252                 site->level2_ref = NULL;
 253         }
 254
 255         site->status = STATUS_UNLOADED;
 256 }
 257
 258 void radar_site_toggle(RadarSite *site)
 259 {
 260         site->hidden = !site->hidden;
 261         if (site->level2) {
 262                 GIS_OBJECT(site->level2)->hidden = site->hidden;
 263                 gtk_widget_queue_draw(GTK_WIDGET(site->viewer));
 264         }
 265 }
 266
 267 void radar_site_load(RadarSite *site)
 268 {
 269         g_debug("GisPluginRadar: radar_site_load %s", site->city->code);
 270
 271         /* Add tab page */
 272         site->config = gtk_alignment_new(0, 0, 1, 1);
 273         gtk_notebook_append_page(GTK_NOTEBOOK(site->pconfig), site->config,
 274                         _gtk_check_label_new(site->city->name, !site->hidden,
 275                                 G_CALLBACK(radar_site_toggle), site));
 276         gtk_widget_show_all(site->config);
 277
 278         /* Set up radar loading */
 279         site->time_id = g_signal_connect_swapped(site->viewer, "time-changed",
 280                         G_CALLBACK(_site_update), site);
 281         site->refresh_id = g_signal_connect_swapped(site->viewer, "refresh",
 282                         G_CALLBACK(_site_update), site);
 283         _site_update(site);
 284 }
 285
 286 void _site_on_location_changed(GisViewer *viewer,
 287                 gdouble lat, gdouble lon, gdouble elev,
 288                 gpointer _site)
 289 {
 290         static gdouble min_dist = EARTH_R / 20;
 291         RadarSite *site = _site;
 292
 293         /* Calculate distance, could cache xyz values */
 294         gdouble eye_xyz[3], site_xyz[3];
 295         lle2xyz(lat, lon, elev, &eye_xyz[0], &eye_xyz[1], &eye_xyz[2]);
 296         lle2xyz(site->city->pos.lat, site->city->pos.lon, site->city->pos.elev,
 297                         &site_xyz[0], &site_xyz[1], &site_xyz[2]);
 298         gdouble dist = distd(site_xyz, eye_xyz);
 299
 300         /* Load or unload the site if necessasairy */
 301         if (dist <= min_dist && dist < elev*1.25 && site->status == STATUS_UNLOADED)
 302                 radar_site_load(site);
 303         else if (dist > 2*min_dist &&  site->status != STATUS_UNLOADED)
 304                 radar_site_unload(site);
 305 }
 306
 307 gboolean _site_add_marker(gpointer _site)
 308 {
 309         RadarSite *site = _site;
 310         site->marker = gis_marker_new(site->city->name);
 311         GIS_OBJECT(site->marker)->center = site->city->pos;
 312         GIS_OBJECT(site->marker)->lod    = EARTH_R*site->city->lod;
 313         site->marker_ref = gis_viewer_add(site->viewer,
 314                         GIS_OBJECT(site->marker), GIS_LEVEL_OVERLAY, FALSE);
 315         return FALSE;
 316 }
 317 RadarSite *radar_site_new(city_t *city, GtkWidget *pconfig,
 318                 GisViewer *viewer, GisPrefs *prefs, GisHttp *http)
 319 {
 320         RadarSite *site = g_new0(RadarSite, 1);
 321         site->viewer  = g_object_ref(viewer);
 322         site->prefs   = g_object_ref(prefs);
 323         //site->http    = http;
 324         site->http    = gis_http_new(G_DIR_SEPARATOR_S "nexrad" G_DIR_SEPARATOR_S "level2" G_DIR_SEPARATOR_S);
 325         site->city    = city;
 326         site->pconfig = pconfig;
 327
 328         /* Add marker */
 329         g_idle_add_full(G_PRIORITY_LOW, _site_add_marker, site, NULL);
 330
 331
 332         /* Connect signals */
 333         site->location_id  = g_signal_connect(viewer, "location-changed",
 334                         G_CALLBACK(_site_on_location_changed), site);
 335         return site;
 336 }
 337
 338 void radar_site_free(RadarSite *site)
 339 {
 340         radar_site_unload(site);
 341         gis_viewer_remove(site->viewer, site->marker_ref);
 342         if (site->location_id)
 343                 g_signal_handler_disconnect(site->viewer, site->location_id);
 344         gis_http_free(site->http);
 345         g_object_unref(site->viewer);
 346         g_object_unref(site->prefs);
 347         g_free(site);
 348 }
 349
 350
 351 /**************
 352  * RadarConus *
 353  **************/
 354 #define CONUS_NORTH       50.406626367301044
 355 #define CONUS_WEST       -127.620375523875420
 356 #define CONUS_WIDTH       3400.0
 357 #define CONUS_HEIGHT      1600.0
 358 #define CONUS_DEG_PER_PX  0.017971305190311
 359
 360 struct _RadarConus {
 361         GisViewer   *viewer;
 362         GisHttp     *http;
 363         GtkWidget   *config;
 364         time_t       time;
 365         const gchar *message;
 366         GStaticMutex loading;
 367
 368         gchar       *path;
 369         GisTile     *tile[2];
 370         gpointer    *tile_ref[2];
 371
 372         guint        time_id;     // "time-changed"     callback ID
 373         guint        refresh_id;  // "refresh"          callback ID
 374 };
 375
 376 void _conus_update_loading(gchar *file, goffset cur,
 377                 goffset total, gpointer _conus)
 378 {
 379         RadarConus *conus = _conus;
 380         GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(conus->config));
 381         double percent = (double)cur/total;
 382         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0));
 383         gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)",
 384                         percent*100, (double)cur/1000000, (double)total/1000000);
 385         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg);
 386         g_free(msg);
 387 }
 388
 389 /* Copy images to graphics memory */
 390 static void _conus_update_end_copy(GisTile *tile, guchar *pixels)
 391 {
 392         if (!tile->data) {
 393                 tile->data = g_new0(guint, 1);
 394                 glGenTextures(1, tile->data);
 395         }
 396
 397         guint *tex = tile->data;
 398         glBindTexture(GL_TEXTURE_2D, *tex);
 399
 400         glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 401         glPixelStorei(GL_PACK_ALIGNMENT, 1);
 402         glTexImage2D(GL_TEXTURE_2D, 0, 4, 2048, 2048, 0,
 403                         GL_RGBA, GL_UNSIGNED_BYTE, NULL);
 404         glTexSubImage2D(GL_TEXTURE_2D, 0, 1,1, CONUS_WIDTH/2,CONUS_HEIGHT,
 405                         GL_RGBA, GL_UNSIGNED_BYTE, pixels);
 406         tile->coords.n = 1.0/(CONUS_WIDTH/2);
 407         tile->coords.w = 1.0/ CONUS_HEIGHT;
 408         tile->coords.s = tile->coords.n +  CONUS_HEIGHT   / 2048.0;
 409         tile->coords.e = tile->coords.w + (CONUS_WIDTH/2) / 2048.0;
 410         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 411         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 412         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
 413         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
 414         glFlush();
 415 }
 416
 417 /* Split the pixbuf into east and west halves (with 2K sides)
 418  * Also map the pixbuf's alpha values */
 419 static void _conus_update_end_split(guchar *pixels, guchar *west, guchar *east,
 420                 gint width, gint height, gint pxsize)
 421 {
 422         g_debug("GisPluginRadar: _conus_update_end_split");
 423         guchar *out[] = {west,east};
 424         const guchar alphamap[][4] = {
 425                 {0x04, 0xe9, 0xe7, 0x30},
 426                 {0x01, 0x9f, 0xf4, 0x60},
 427                 {0x03, 0x00, 0xf4, 0x90},
 428         };
 429         for (int y = 0; y < height; y++)
 430         for (int x = 0; x < width;  x++) {
 431                 gint subx = x % (width/2);
 432                 gint idx  = x / (width/2);
 433                 guchar *src = &pixels[(y*width+x)*pxsize];
 434                 guchar *dst = &out[idx][(y*(width/2)+subx)*4];
 435                 if (src[0] > 0xe0 &&
 436                     src[1] > 0xe0 &&
 437                     src[2] > 0xe0) {
 438                         dst[3] = 0x00;
 439                 } else {
 440                         dst[0] = src[0];
 441                         dst[1] = src[1];
 442                         dst[2] = src[2];
 443                         dst[3] = 0xff;
 444                         for (int j = 0; j < G_N_ELEMENTS(alphamap); j++)
 445                                 if (src[0] == alphamap[j][0] &&
 446                                     src[1] == alphamap[j][1] &&
 447                                     src[2] == alphamap[j][2])
 448                                         dst[3] = alphamap[j][3];
 449                 }
 450         }
 451 }
 452
 453 gboolean _conus_update_end(gpointer _conus)
 454 {
 455         RadarConus *conus = _conus;
 456         g_debug("GisPluginRadar: _conus_update_end");
 457
 458         /* Check error status */
 459         if (conus->message) {
 460                 g_warning("GisPluginRadar: _conus_update_end - %s", conus->message);
 461                 _gtk_bin_set_child(GTK_BIN(conus->config), gtk_label_new(conus->message));
 462                 goto out;
 463         }
 464
 465         /* Load and pixbuf */
 466         GError *error = NULL;
 467         GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(conus->path, &error);
 468         guchar    *pixels = gdk_pixbuf_get_pixels(pixbuf);
 469         gint       width  = gdk_pixbuf_get_width(pixbuf);
 470         gint       height = gdk_pixbuf_get_height(pixbuf);
 471         gint       pxsize = gdk_pixbuf_get_has_alpha(pixbuf) ? 4 : 3;
 472
 473         /* Split pixels into east/west parts */
 474         guchar *pixels_west = g_malloc(4*(width/2)*height);
 475         guchar *pixels_east = g_malloc(4*(width/2)*height);
 476         _conus_update_end_split(pixels, pixels_west, pixels_east,
 477                         width, height, pxsize);
 478         g_object_unref(pixbuf);
 479
 480         /* Copy pixels to graphics memory */
 481         _conus_update_end_copy(conus->tile[0], pixels_west);
 482         _conus_update_end_copy(conus->tile[1], pixels_east);
 483         g_free(pixels_west);
 484         g_free(pixels_east);
 485
 486         /* Update GUI */
 487         gchar *label = g_path_get_basename(conus->path);
 488         _gtk_bin_set_child(GTK_BIN(conus->config), gtk_label_new(label));
 489         gtk_widget_queue_draw(GTK_WIDGET(conus->viewer));
 490         g_free(label);
 491
 492 out:
 493         g_free(conus->path);
 494         g_static_mutex_unlock(&conus->loading);
 495         return FALSE;
 496 }
 497
 498 gpointer _conus_update_thread(gpointer _conus)
 499 {
 500         RadarConus *conus = _conus;
 501         conus->message = NULL;
 502
 503         /* Find nearest */
 504         g_debug("GisPluginRadar: _conus_update_thread - nearest");
 505         gboolean offline = gis_viewer_get_offline(conus->viewer);
 506         gchar *conus_url = "http://radar.weather.gov/Conus/RadarImg/";
 507         GList *files = gis_http_available(conus->http,
 508                         "^Conus_[^\"]*_N0Ronly.gif$", "",
 509                         NULL, (offline ? NULL : conus_url));
 510         gchar *nearest = _find_nearest(conus->time, files, 6, "%Y%m%d_%H%M");
 511         g_list_foreach(files, (GFunc)g_free, NULL);
 512         g_list_free(files);
 513         if (!nearest) {
 514                 conus->message = "No suitable files";
 515                 goto out;
 516         }
 517
 518         /* Fetch the image */
 519         g_debug("GisPluginRadar: _conus_update_thread - fetch");
 520         gchar *uri  = g_strconcat(conus_url, nearest, NULL);
 521         conus->path = gis_http_fetch(conus->http, uri, nearest, GIS_ONCE,
 522                         _conus_update_loading, conus);
 523         g_free(nearest);
 524         g_free(uri);
 525         if (!conus->path) {
 526                 conus->message = "Fetch failed";
 527                 goto out;
 528         }
 529
 530 out:
 531         g_debug("GisPluginRadar: _conus_update_thread - done");
 532         g_idle_add(_conus_update_end, conus);
 533         return NULL;
 534 }
 535
 536 void _conus_update(RadarConus *conus)
 537 {
 538         if (!g_static_mutex_trylock(&conus->loading))
 539                 return;
 540         conus->time = gis_viewer_get_time(conus->viewer);
 541         g_debug("GisPluginRadar: _conus_update - %d",
 542                         (gint)conus->time);
 543
 544         /* Add a progress bar */
 545         GtkWidget *progress = gtk_progress_bar_new();
 546         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 547         _gtk_bin_set_child(GTK_BIN(conus->config), progress);
 548
 549         g_thread_create(_conus_update_thread, conus, FALSE, NULL);
 550 }
 551
 552 void radar_conus_toggle(RadarConus *conus)
 553 {
 554         GIS_OBJECT(conus->tile[0])->hidden =
 555                 !GIS_OBJECT(conus->tile[0])->hidden;
 556         GIS_OBJECT(conus->tile[1])->hidden =
 557                 !GIS_OBJECT(conus->tile[1])->hidden;
 558         gtk_widget_queue_draw(GTK_WIDGET(conus->viewer));
 559 }
 560
 561 RadarConus *radar_conus_new(GtkWidget *pconfig,
 562                 GisViewer *viewer, GisHttp *http)
 563 {
 564         RadarConus *conus = g_new0(RadarConus, 1);
 565         conus->viewer  = g_object_ref(viewer);
 566         conus->http    = http;
 567         conus->config  = gtk_alignment_new(0, 0, 1, 1);
 568         g_static_mutex_init(&conus->loading);
 569
 570         gdouble south =  CONUS_NORTH - CONUS_DEG_PER_PX*CONUS_HEIGHT;
 571         gdouble east  =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH;
 572         gdouble mid   =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH/2;
 573         conus->tile[0] = gis_tile_new(NULL, CONUS_NORTH, south, mid, CONUS_WEST);
 574         conus->tile[1] = gis_tile_new(NULL, CONUS_NORTH, south, east, mid);
 575         conus->tile[0]->zindex = 2;
 576         conus->tile[1]->zindex = 1;
 577         conus->tile_ref[0] = gis_viewer_add(viewer,
 578                         GIS_OBJECT(conus->tile[0]), GIS_LEVEL_WORLD, TRUE);
 579         conus->tile_ref[1] = gis_viewer_add(viewer,
 580                         GIS_OBJECT(conus->tile[1]), GIS_LEVEL_WORLD, TRUE);
 581
 582         conus->time_id = g_signal_connect_swapped(viewer, "time-changed",
 583                         G_CALLBACK(_conus_update), conus);
 584         conus->refresh_id = g_signal_connect_swapped(viewer, "refresh",
 585                         G_CALLBACK(_conus_update), conus);
 586
 587         gtk_notebook_append_page(GTK_NOTEBOOK(pconfig), conus->config,
 588                         _gtk_check_label_new("Conus", TRUE,
 589                                 G_CALLBACK(radar_conus_toggle), conus));
 590         _conus_update(conus);
 591         return conus;
 592 }
 593
 594 void radar_conus_free(RadarConus *conus)
 595 {
 596         g_signal_handler_disconnect(conus->viewer, conus->time_id);
 597         g_signal_handler_disconnect(conus->viewer, conus->refresh_id);
 598
 599         for (int i = 0; i < 2; i++) {
 600                 GisTile *tile = conus->tile[i];
 601                 gpointer ref  = conus->tile_ref[i];
 602                 if (tile->data) {
 603                         glDeleteTextures(1, tile->data);
 604                         g_free(tile->data);
 605                 }
 606                 gis_viewer_remove(conus->viewer, ref);
 607         }
 608
 609         g_object_unref(conus->viewer);
 610         g_free(conus);
 611 }
 612
 613
 614 /******************
 615  * GisPluginRadar *
 616  ******************/
 617 static void _draw_hud(GisCallback *callback, gpointer _self)
 618 {
 619         /* TODO */
 620         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 621         if (!self->colormap)
 622                 return;
 623
 624         g_debug("GisPluginRadar: _draw_hud");
 625         /* Print the color table */
 626         glMatrixMode(GL_MODELVIEW ); glLoadIdentity();
 627         glMatrixMode(GL_PROJECTION); glLoadIdentity();
 628         glDisable(GL_TEXTURE_2D);
 629         glDisable(GL_ALPHA_TEST);
 630         glDisable(GL_CULL_FACE);
 631         glDisable(GL_LIGHTING);
 632         glEnable(GL_COLOR_MATERIAL);
 633         glBegin(GL_QUADS);
 634         int i;
 635         for (i = 0; i < 256; i++) {
 636                 glColor4ubv(self->colormap->data[i]);
 637                 glVertex3f(-1.0, (float)((i  ) - 256/2)/(256/2), 0.0); // bot left
 638                 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
 639                 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
 640                 glVertex3f(-0.9, (float)((i  ) - 256/2)/(256/2), 0.0); // bot right
 641         }
 642         glEnd();
 643 }
 644
 645 /* Methods */
 646 GisPluginRadar *gis_plugin_radar_new(GisViewer *viewer, GisPrefs *prefs)
 647 {
 648         /* TODO: move to constructor if possible */
 649         g_debug("GisPluginRadar: new");
 650         GisPluginRadar *self = g_object_new(GIS_TYPE_PLUGIN_RADAR, NULL);
 651         self->viewer = viewer;
 652         self->prefs  = prefs;
 653
 654         /* Load HUD */
 655         GisCallback *hud_cb = gis_callback_new(_draw_hud, self);
 656         self->hud_ref = gis_viewer_add(viewer, GIS_OBJECT(hud_cb), GIS_LEVEL_HUD, FALSE);
 657
 658         /* Load Conus */
 659         self->conus = radar_conus_new(self->config, self->viewer, self->conus_http);
 660
 661         /* Load radar sites */
 662         for (city_t *city = cities; city->type; city++) {
 663                 if (city->type != LOCATION_CITY)
 664                         continue;
 665                 RadarSite *site = radar_site_new(city, self->config,
 666                                 self->viewer, self->prefs, self->sites_http);
 667                 g_hash_table_insert(self->sites, city->code, site);
 668         }
 669
 670         return self;
 671 }
 672
 673 static GtkWidget *gis_plugin_radar_get_config(GisPlugin *_self)
 674 {
 675         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 676         return self->config;
 677 }
 678
 679 /* GObject code */
 680 static void gis_plugin_radar_plugin_init(GisPluginInterface *iface);
 681 G_DEFINE_TYPE_WITH_CODE(GisPluginRadar, gis_plugin_radar, G_TYPE_OBJECT,
 682                 G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
 683                         gis_plugin_radar_plugin_init));
 684 static void gis_plugin_radar_plugin_init(GisPluginInterface *iface)
 685 {
 686         g_debug("GisPluginRadar: plugin_init");
 687         /* Add methods to the interface */
 688         iface->get_config = gis_plugin_radar_get_config;
 689 }
 690 static void gis_plugin_radar_init(GisPluginRadar *self)
 691 {
 692         g_debug("GisPluginRadar: class_init");
 693         /* Set defaults */
 694         self->sites_http = gis_http_new(G_DIR_SEPARATOR_S "nexrad" G_DIR_SEPARATOR_S "level2" G_DIR_SEPARATOR_S);
 695         self->conus_http = gis_http_new(G_DIR_SEPARATOR_S "nexrad" G_DIR_SEPARATOR_S "conus" G_DIR_SEPARATOR_S);
 696         self->sites      = g_hash_table_new_full(g_str_hash, g_str_equal,
 697                                 NULL, (GDestroyNotify)radar_site_free);
 698         self->config     = gtk_notebook_new();
 699         gtk_notebook_set_tab_pos(GTK_NOTEBOOK(self->config), GTK_POS_LEFT);
 700 }
 701 static void gis_plugin_radar_dispose(GObject *gobject)
 702 {
 703         g_debug("GisPluginRadar: dispose");
 704         GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject);
 705         gis_viewer_remove(self->viewer, self->hud_ref);
 706         radar_conus_free(self->conus);
 707         /* Drop references */
 708         G_OBJECT_CLASS(gis_plugin_radar_parent_class)->dispose(gobject);
 709 }
 710 static void gis_plugin_radar_finalize(GObject *gobject)
 711 {
 712         g_debug("GisPluginRadar: finalize");
 713         GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject);
 714         /* Free data */
 715         gis_http_free(self->conus_http);
 716         gis_http_free(self->sites_http);
 717         g_hash_table_destroy(self->sites);
 718         gtk_widget_destroy(self->config);
 719         G_OBJECT_CLASS(gis_plugin_radar_parent_class)->finalize(gobject);
 720
 721 }
 722 static void gis_plugin_radar_class_init(GisPluginRadarClass *klass)
 723 {
 724         g_debug("GisPluginRadar: class_init");
 725         GObjectClass *gobject_class = (GObjectClass*)klass;
 726         gobject_class->dispose  = gis_plugin_radar_dispose;
 727         gobject_class->finalize = gis_plugin_radar_finalize;
 728 }