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->status = STATUS_LOADING;
 151         site->message = NULL;
 152
 153         gboolean offline = gis_viewer_get_offline(site->viewer);
 154         gchar *nexrad_url = gis_prefs_get_string(site->prefs,
 155                         "aweather/nexrad_url", NULL);
 156
 157         /* Find nearest volume (temporally) */
 158         g_debug("GisPluginRadar: _site_update_thread - find nearest - %s", site->city->code);
 159         gchar *dir_list = g_strconcat(nexrad_url, "/", site->city->code,
 160                         "/", "dir.list", NULL);
 161         GList *files = gis_http_available(site->http,
 162                         "^K\\w{3}_\\d{8}_\\d{4}$", site->city->code,
 163                         "\\d+ (.*)", (offline ? NULL : dir_list));
 164         g_free(dir_list);
 165         gchar *nearest = _find_nearest(site->time, files, 5, "%Y%m%d_%H%M");
 166         g_list_foreach(files, (GFunc)g_free, NULL);
 167         g_list_free(files);
 168         if (!nearest) {
 169                 site->message = "No suitable files found";
 170                 goto out;
 171         }
 172
 173         /* Fetch new volume */
 174         g_debug("GisPluginRadar: _site_update_thread - fetch");
 175         gchar *local = g_strconcat(site->city->code, "/", nearest, NULL);
 176         gchar *uri   = g_strconcat(nexrad_url, "/", local,   NULL);
 177         gchar *file = gis_http_fetch(site->http, uri, local,
 178                         offline ? GIS_LOCAL : GIS_UPDATE,
 179                         _site_update_loading, site);
 180         g_free(nexrad_url);
 181         g_free(nearest);
 182         g_free(local);
 183         g_free(uri);
 184         if (!file) {
 185                 site->message = "Fetch failed";
 186                 goto out;
 187         }
 188
 189         /* Load and add new volume */
 190         g_debug("GisPluginRadar: _site_update_thread - load - %s", site->city->code);
 191         site->level2 = aweather_level2_new_from_file(
 192                         site->viewer, colormaps, file, site->city->code);
 193         GIS_OBJECT(site->level2)->hidden = site->hidden;
 194         g_free(file);
 195         if (!site->level2) {
 196                 site->message = "Load failed";
 197                 goto out;
 198         }
 199         site->level2_ref = gis_viewer_add(site->viewer,
 200                         GIS_OBJECT(site->level2), GIS_LEVEL_WORLD, TRUE);
 201
 202 out:
 203         g_idle_add(_site_update_end, site);
 204         return NULL;
 205 }
 206 void _site_update(RadarSite *site)
 207 {
 208         site->time = gis_viewer_get_time(site->viewer);
 209         g_debug("GisPluginRadar: _site_update %s - %d",
 210                         site->city->code, (gint)site->time);
 211
 212         /* Add a progress bar */
 213         GtkWidget *progress = gtk_progress_bar_new();
 214         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 215         _gtk_bin_set_child(GTK_BIN(site->config), progress);
 216
 217         /* Remove old volume */
 218         g_debug("GisPluginRadar: _site_update - remove - %s", site->city->code);
 219         if (site->level2_ref) {
 220                 gis_viewer_remove(site->viewer, site->level2_ref);
 221                 site->level2_ref = NULL;
 222         }
 223
 224         /* Fork loading right away so updating the
 225          * list of times doesn't take too long */
 226         g_thread_create(_site_update_thread, site, FALSE, NULL);
 227 }
 228
 229 /* RadarSite methods */
 230 void radar_site_unload(RadarSite *site)
 231 {
 232         if (site->status != STATUS_LOADED)
 233                 return; // Abort if it's still loading
 234
 235         g_debug("GisPluginRadar: radar_site_unload %s", site->city->code);
 236
 237         if (site->time_id)
 238                 g_signal_handler_disconnect(site->viewer, site->time_id);
 239         if (site->refresh_id)
 240                 g_signal_handler_disconnect(site->viewer, site->refresh_id);
 241
 242         /* Remove tab */
 243         if (site->config)
 244                 gtk_widget_destroy(site->config);
 245
 246         /* Remove radar */
 247         if (site->level2_ref) {
 248                 gis_viewer_remove(site->viewer, site->level2_ref);
 249                 site->level2_ref = NULL;
 250         }
 251
 252         site->status = STATUS_UNLOADED;
 253 }
 254
 255 void radar_site_toggle(RadarSite *site)
 256 {
 257         site->hidden = !site->hidden;
 258         if (site->level2) {
 259                 GIS_OBJECT(site->level2)->hidden = site->hidden;
 260                 gtk_widget_queue_draw(GTK_WIDGET(site->viewer));
 261         }
 262 }
 263
 264 void radar_site_load(RadarSite *site)
 265 {
 266         g_debug("GisPluginRadar: radar_site_load %s", site->city->code);
 267         site->status = STATUS_LOADING;
 268
 269         /* Add tab page */
 270         site->config = gtk_alignment_new(0, 0, 1, 1);
 271         gtk_notebook_append_page(GTK_NOTEBOOK(site->pconfig), site->config,
 272                         _gtk_check_label_new(site->city->name, !site->hidden,
 273                                 G_CALLBACK(radar_site_toggle), site));
 274         gtk_widget_show_all(site->config);
 275
 276         /* Set up radar loading */
 277         site->time_id = g_signal_connect_swapped(site->viewer, "time-changed",
 278                         G_CALLBACK(_site_update), site);
 279         site->refresh_id = g_signal_connect_swapped(site->viewer, "refresh",
 280                         G_CALLBACK(_site_update), site);
 281         _site_update(site);
 282 }
 283
 284 void _site_on_location_changed(GisViewer *viewer,
 285                 gdouble lat, gdouble lon, gdouble elev,
 286                 gpointer _site)
 287 {
 288         static gdouble min_dist = EARTH_R / 20;
 289         RadarSite *site = _site;
 290
 291         /* Calculate distance, could cache xyz values */
 292         gdouble eye_xyz[3], site_xyz[3];
 293         lle2xyz(lat, lon, elev, &eye_xyz[0], &eye_xyz[1], &eye_xyz[2]);
 294         lle2xyz(site->city->pos.lat, site->city->pos.lon, site->city->pos.elev,
 295                         &site_xyz[0], &site_xyz[1], &site_xyz[2]);
 296         gdouble dist = distd(site_xyz, eye_xyz);
 297
 298         /* Load or unload the site if necessasairy */
 299         if (dist <= min_dist && dist < elev*1.25 && site->status == STATUS_UNLOADED)
 300                 radar_site_load(site);
 301         else if (dist > 2*min_dist &&  site->status != STATUS_UNLOADED)
 302                 radar_site_unload(site);
 303 }
 304
 305 gboolean _site_add_marker(gpointer _site)
 306 {
 307         RadarSite *site = _site;
 308         site->marker = gis_marker_new(site->city->name);
 309         GIS_OBJECT(site->marker)->center = site->city->pos;
 310         GIS_OBJECT(site->marker)->lod    = EARTH_R*site->city->lod;
 311         site->marker_ref = gis_viewer_add(site->viewer,
 312                         GIS_OBJECT(site->marker), GIS_LEVEL_OVERLAY, FALSE);
 313         return FALSE;
 314 }
 315 RadarSite *radar_site_new(city_t *city, GtkWidget *pconfig,
 316                 GisViewer *viewer, GisPrefs *prefs, GisHttp *http)
 317 {
 318         RadarSite *site = g_new0(RadarSite, 1);
 319         site->viewer  = g_object_ref(viewer);
 320         site->prefs   = g_object_ref(prefs);
 321         site->http    = http;
 322         site->city    = city;
 323         site->pconfig = pconfig;
 324
 325         /* Add marker */
 326         g_idle_add_full(G_PRIORITY_LOW, _site_add_marker, site, NULL);
 327
 328
 329         /* Connect signals */
 330         site->location_id  = g_signal_connect(viewer, "location-changed",
 331                         G_CALLBACK(_site_on_location_changed), site);
 332         return site;
 333 }
 334
 335 void radar_site_free(RadarSite *site)
 336 {
 337         radar_site_unload(site);
 338         gis_viewer_remove(site->viewer, site->marker_ref);
 339         if (site->location_id)
 340                 g_signal_handler_disconnect(site->viewer, site->location_id);
 341         g_object_unref(site->viewer);
 342         g_object_unref(site->prefs);
 343         g_free(site);
 344 }
 345
 346
 347 /**************
 348  * RadarConus *
 349  **************/
 350 #define CONUS_NORTH       50.406626367301044
 351 #define CONUS_WEST       -127.620375523875420
 352 #define CONUS_WIDTH       3400.0
 353 #define CONUS_HEIGHT      1600.0
 354 #define CONUS_DEG_PER_PX  0.017971305190311
 355
 356 struct _RadarConus {
 357         GisViewer   *viewer;
 358         GisHttp     *http;
 359         GtkWidget   *config;
 360         time_t       time;
 361         const gchar *message;
 362
 363         gchar       *path;
 364         GisTile     *tile[2];
 365         gpointer    *tile_ref[2];
 366
 367         guint        time_id;     // "time-changed"     callback ID
 368         guint        refresh_id;  // "refresh"          callback ID
 369 };
 370
 371 void _conus_update_loading(gchar *file, goffset cur,
 372                 goffset total, gpointer _conus)
 373 {
 374         RadarConus *conus = _conus;
 375         GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(conus->config));
 376         double percent = (double)cur/total;
 377         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0));
 378         gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)",
 379                         percent*100, (double)cur/1000000, (double)total/1000000);
 380         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg);
 381         g_free(msg);
 382 }
 383
 384 /* Copy images to graphics memory */
 385 static void _conus_update_end_copy(GisTile *tile, guchar *pixels)
 386 {
 387         if (!tile->data) {
 388                 tile->data = g_new0(guint, 1);
 389                 glGenTextures(1, tile->data);
 390         }
 391
 392         guint *tex = tile->data;
 393         glBindTexture(GL_TEXTURE_2D, *tex);
 394
 395         glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 396         glPixelStorei(GL_PACK_ALIGNMENT, 1);
 397         glTexImage2D(GL_TEXTURE_2D, 0, 4, 2048, 2048, 0,
 398                         GL_RGBA, GL_UNSIGNED_BYTE, NULL);
 399         glTexSubImage2D(GL_TEXTURE_2D, 0, 1,1, CONUS_WIDTH/2,CONUS_HEIGHT,
 400                         GL_RGBA, GL_UNSIGNED_BYTE, pixels);
 401         tile->coords.n = 1.0/(CONUS_WIDTH/2);
 402         tile->coords.w = 1.0/ CONUS_HEIGHT;
 403         tile->coords.s = tile->coords.n +  CONUS_HEIGHT   / 2048.0;
 404         tile->coords.e = tile->coords.w + (CONUS_WIDTH/2) / 2048.0;
 405         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 406         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 407         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
 408         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
 409         glFlush();
 410 }
 411
 412 /* Split the pixbuf into east and west halves (with 2K sides)
 413  * Also map the pixbuf's alpha values */
 414 static void _conus_update_end_split(guchar *pixels, guchar *west, guchar *east,
 415                 gint width, gint height, gint pxsize)
 416 {
 417         g_debug("GisPluginRadar: _conus_update_end_split");
 418         guchar *out[] = {west,east};
 419         const guchar alphamap[][4] = {
 420                 {0x04, 0xe9, 0xe7, 0x30},
 421                 {0x01, 0x9f, 0xf4, 0x60},
 422                 {0x03, 0x00, 0xf4, 0x90},
 423         };
 424         for (int y = 0; y < height; y++)
 425         for (int x = 0; x < width;  x++) {
 426                 gint subx = x % (width/2);
 427                 gint idx  = x / (width/2);
 428                 guchar *src = &pixels[(y*width+x)*pxsize];
 429                 guchar *dst = &out[idx][(y*(width/2)+subx)*4];
 430                 if (src[0] > 0xe0 &&
 431                     src[1] > 0xe0 &&
 432                     src[2] > 0xe0) {
 433                         dst[3] = 0x00;
 434                 } else {
 435                         dst[0] = src[0];
 436                         dst[1] = src[1];
 437                         dst[2] = src[2];
 438                         dst[3] = 0xff;
 439                         for (int j = 0; j < G_N_ELEMENTS(alphamap); j++)
 440                                 if (src[0] == alphamap[j][0] &&
 441                                     src[1] == alphamap[j][1] &&
 442                                     src[2] == alphamap[j][2])
 443                                         dst[3] = alphamap[j][3];
 444                 }
 445         }
 446 }
 447
 448 gboolean _conus_update_end(gpointer _conus)
 449 {
 450         RadarConus *conus = _conus;
 451         g_debug("GisPluginRadar: _conus_update_end");
 452
 453         /* Check error status */
 454         if (conus->message) {
 455                 g_warning("GisPluginRadar: _conus_update_end - %s", conus->message);
 456                 _gtk_bin_set_child(GTK_BIN(conus->config), gtk_label_new(conus->message));
 457                 return FALSE;
 458         }
 459
 460         /* Load and pixbuf */
 461         GError *error = NULL;
 462         GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(conus->path, &error);
 463         guchar    *pixels = gdk_pixbuf_get_pixels(pixbuf);
 464         gint       width  = gdk_pixbuf_get_width(pixbuf);
 465         gint       height = gdk_pixbuf_get_height(pixbuf);
 466         gint       pxsize = gdk_pixbuf_get_has_alpha(pixbuf) ? 4 : 3;
 467
 468         /* Split pixels into east/west parts */
 469         guchar *pixels_west = g_malloc(4*(width/2)*height);
 470         guchar *pixels_east = g_malloc(4*(width/2)*height);
 471         _conus_update_end_split(pixels, pixels_west, pixels_east,
 472                         width, height, pxsize);
 473         g_object_unref(pixbuf);
 474
 475         /* Copy pixels to graphics memory */
 476         _conus_update_end_copy(conus->tile[0], pixels_west);
 477         _conus_update_end_copy(conus->tile[1], pixels_east);
 478         g_free(pixels_west);
 479         g_free(pixels_east);
 480
 481         /* Update GUI */
 482         gchar *label = g_path_get_basename(conus->path);
 483         _gtk_bin_set_child(GTK_BIN(conus->config), gtk_label_new(label));
 484         gtk_widget_queue_draw(GTK_WIDGET(conus->viewer));
 485         g_free(conus->path);
 486         g_free(label);
 487
 488         return FALSE;
 489 }
 490
 491 gpointer _conus_update_thread(gpointer _conus)
 492 {
 493         RadarConus *conus = _conus;
 494         conus->message = NULL;
 495
 496         /* Find nearest */
 497         g_debug("GisPluginRadar: _conus_update_thread - nearest");
 498         gboolean offline = gis_viewer_get_offline(conus->viewer);
 499         gchar *conus_url = "http://radar.weather.gov/Conus/RadarImg/";
 500         GList *files = gis_http_available(conus->http,
 501                         "^Conus_[^\"]*_N0Ronly.gif$", "",
 502                         NULL, (offline ? NULL : conus_url));
 503         gchar *nearest = _find_nearest(conus->time, files, 6, "%Y%m%d_%H%M");
 504         g_list_foreach(files, (GFunc)g_free, NULL);
 505         g_list_free(files);
 506         if (!nearest) {
 507                 conus->message = "No suitable files";
 508                 goto out;
 509         }
 510
 511         /* Fetch the image */
 512         g_debug("GisPluginRadar: _conus_update_thread - fetch");
 513         gchar *uri  = g_strconcat(conus_url, nearest, NULL);
 514         conus->path = gis_http_fetch(conus->http, uri, nearest, GIS_ONCE,
 515                         _conus_update_loading, conus);
 516         g_free(nearest);
 517         g_free(uri);
 518         if (!conus->path) {
 519                 conus->message = "Fetch failed";
 520                 goto out;
 521         }
 522
 523 out:
 524         g_debug("GisPluginRadar: _conus_update_thread - done");
 525         g_idle_add(_conus_update_end, conus);
 526         return NULL;
 527 }
 528
 529 void _conus_update(RadarConus *conus)
 530 {
 531         conus->time = gis_viewer_get_time(conus->viewer);
 532         g_debug("GisPluginRadar: _conus_update - %d",
 533                         (gint)conus->time);
 534
 535         /* Add a progress bar */
 536         GtkWidget *progress = gtk_progress_bar_new();
 537         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 538         _gtk_bin_set_child(GTK_BIN(conus->config), progress);
 539
 540         g_thread_create(_conus_update_thread, conus, FALSE, NULL);
 541 }
 542
 543 void radar_conus_toggle(RadarConus *conus)
 544 {
 545         GIS_OBJECT(conus->tile[0])->hidden =
 546                 !GIS_OBJECT(conus->tile[0])->hidden;
 547         GIS_OBJECT(conus->tile[1])->hidden =
 548                 !GIS_OBJECT(conus->tile[1])->hidden;
 549         gtk_widget_queue_draw(GTK_WIDGET(conus->viewer));
 550 }
 551
 552 RadarConus *radar_conus_new(GtkWidget *pconfig,
 553                 GisViewer *viewer, GisHttp *http)
 554 {
 555         RadarConus *conus = g_new0(RadarConus, 1);
 556         conus->viewer  = g_object_ref(viewer);
 557         conus->http    = http;
 558         conus->config  = gtk_alignment_new(0, 0, 1, 1);
 559
 560         gdouble south =  CONUS_NORTH - CONUS_DEG_PER_PX*CONUS_HEIGHT;
 561         gdouble east  =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH;
 562         gdouble mid   =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH/2;
 563         conus->tile[0] = gis_tile_new(NULL, CONUS_NORTH, south, mid, CONUS_WEST);
 564         conus->tile[1] = gis_tile_new(NULL, CONUS_NORTH, south, east, mid);
 565         conus->tile[0]->zindex = 2;
 566         conus->tile[1]->zindex = 1;
 567         conus->tile_ref[0] = gis_viewer_add(viewer,
 568                         GIS_OBJECT(conus->tile[0]), GIS_LEVEL_WORLD, TRUE);
 569         conus->tile_ref[1] = gis_viewer_add(viewer,
 570                         GIS_OBJECT(conus->tile[1]), GIS_LEVEL_WORLD, TRUE);
 571
 572         conus->time_id = g_signal_connect_swapped(viewer, "time-changed",
 573                         G_CALLBACK(_conus_update), conus);
 574         conus->refresh_id = g_signal_connect_swapped(viewer, "refresh",
 575                         G_CALLBACK(_conus_update), conus);
 576
 577         gtk_notebook_append_page(GTK_NOTEBOOK(pconfig), conus->config,
 578                         _gtk_check_label_new("Conus", TRUE,
 579                                 G_CALLBACK(radar_conus_toggle), conus));
 580         _conus_update(conus);
 581         return conus;
 582 }
 583
 584 void radar_conus_free(RadarConus *conus)
 585 {
 586         g_signal_handler_disconnect(conus->viewer, conus->time_id);
 587         g_signal_handler_disconnect(conus->viewer, conus->refresh_id);
 588
 589         for (int i = 0; i < 2; i++) {
 590                 GisTile *tile = conus->tile[i];
 591                 gpointer ref  = conus->tile_ref[i];
 592                 if (tile->data) {
 593                         glDeleteTextures(1, tile->data);
 594                         g_free(tile->data);
 595                 }
 596                 gis_viewer_remove(conus->viewer, ref);
 597         }
 598
 599         g_object_unref(conus->viewer);
 600         g_free(conus);
 601 }
 602
 603
 604 /******************
 605  * GisPluginRadar *
 606  ******************/
 607 static void _draw_hud(GisCallback *callback, gpointer _self)
 608 {
 609         /* TODO */
 610         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 611         if (!self->colormap)
 612                 return;
 613
 614         g_debug("GisPluginRadar: _draw_hud");
 615         /* Print the color table */
 616         glMatrixMode(GL_MODELVIEW ); glLoadIdentity();
 617         glMatrixMode(GL_PROJECTION); glLoadIdentity();
 618         glDisable(GL_TEXTURE_2D);
 619         glDisable(GL_ALPHA_TEST);
 620         glDisable(GL_CULL_FACE);
 621         glDisable(GL_LIGHTING);
 622         glEnable(GL_COLOR_MATERIAL);
 623         glBegin(GL_QUADS);
 624         int i;
 625         for (i = 0; i < 256; i++) {
 626                 glColor4ubv(self->colormap->data[i]);
 627                 glVertex3f(-1.0, (float)((i  ) - 256/2)/(256/2), 0.0); // bot left
 628                 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
 629                 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
 630                 glVertex3f(-0.9, (float)((i  ) - 256/2)/(256/2), 0.0); // bot right
 631         }
 632         glEnd();
 633 }
 634
 635 /* Methods */
 636 GisPluginRadar *gis_plugin_radar_new(GisViewer *viewer, GisPrefs *prefs)
 637 {
 638         /* TODO: move to constructor if possible */
 639         g_debug("GisPluginRadar: new");
 640         GisPluginRadar *self = g_object_new(GIS_TYPE_PLUGIN_RADAR, NULL);
 641         self->viewer = viewer;
 642         self->prefs  = prefs;
 643
 644         /* Load HUD */
 645         GisCallback *hud_cb = gis_callback_new(_draw_hud, self);
 646         self->hud_ref = gis_viewer_add(viewer, GIS_OBJECT(hud_cb), GIS_LEVEL_HUD, FALSE);
 647
 648         /* Load Conus */
 649         self->conus = radar_conus_new(self->config, self->viewer, self->conus_http);
 650
 651         /* Load radar sites */
 652         for (city_t *city = cities; city->type; city++) {
 653                 if (city->type != LOCATION_CITY)
 654                         continue;
 655                 RadarSite *site = radar_site_new(city, self->config,
 656                                 self->viewer, self->prefs, self->sites_http);
 657                 g_hash_table_insert(self->sites, city->code, site);
 658         }
 659
 660         return self;
 661 }
 662
 663 static GtkWidget *gis_plugin_radar_get_config(GisPlugin *_self)
 664 {
 665         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 666         return self->config;
 667 }
 668
 669 /* GObject code */
 670 static void gis_plugin_radar_plugin_init(GisPluginInterface *iface);
 671 G_DEFINE_TYPE_WITH_CODE(GisPluginRadar, gis_plugin_radar, G_TYPE_OBJECT,
 672                 G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
 673                         gis_plugin_radar_plugin_init));
 674 static void gis_plugin_radar_plugin_init(GisPluginInterface *iface)
 675 {
 676         g_debug("GisPluginRadar: plugin_init");
 677         /* Add methods to the interface */
 678         iface->get_config = gis_plugin_radar_get_config;
 679 }
 680 static void gis_plugin_radar_init(GisPluginRadar *self)
 681 {
 682         g_debug("GisPluginRadar: class_init");
 683         /* Set defaults */
 684         self->sites_http = gis_http_new(G_DIR_SEPARATOR_S "nexrad" G_DIR_SEPARATOR_S "level2" G_DIR_SEPARATOR_S);
 685         self->conus_http = gis_http_new(G_DIR_SEPARATOR_S "nexrad" G_DIR_SEPARATOR_S "conus" G_DIR_SEPARATOR_S);
 686         self->sites      = g_hash_table_new_full(g_str_hash, g_str_equal,
 687                                 NULL, (GDestroyNotify)radar_site_free);
 688         self->config     = gtk_notebook_new();
 689         gtk_notebook_set_tab_pos(GTK_NOTEBOOK(self->config), GTK_POS_LEFT);
 690 }
 691 static void gis_plugin_radar_dispose(GObject *gobject)
 692 {
 693         g_debug("GisPluginRadar: dispose");
 694         GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject);
 695         gis_viewer_remove(self->viewer, self->hud_ref);
 696         radar_conus_free(self->conus);
 697         /* Drop references */
 698         G_OBJECT_CLASS(gis_plugin_radar_parent_class)->dispose(gobject);
 699 }
 700 static void gis_plugin_radar_finalize(GObject *gobject)
 701 {
 702         g_debug("GisPluginRadar: finalize");
 703         GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject);
 704         /* Free data */
 705         gis_http_free(self->conus_http);
 706         gis_http_free(self->sites_http);
 707         g_hash_table_destroy(self->sites);
 708         gtk_widget_destroy(self->config);
 709         G_OBJECT_CLASS(gis_plugin_radar_parent_class)->finalize(gobject);
 710
 711 }
 712 static void gis_plugin_radar_class_init(GisPluginRadarClass *klass)
 713 {
 714         g_debug("GisPluginRadar: class_init");
 715         GObjectClass *gobject_class = (GObjectClass*)klass;
 716         gobject_class->dispose  = gis_plugin_radar_dispose;
 717         gobject_class->finalize = gis_plugin_radar_finalize;
 718 }