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 <grits.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("RadarSite: 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("RadarSite: 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         GritsMarker    *marker;      // Map marker for grits
  97         gpointer       *marker_ref;  // Reference to maker
  98
  99         /* Stuff from the parents */
 100         GritsViewer    *viewer;
 101         GritsHttp      *http;
 102         GritsPrefs     *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;  // GritsViewer 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("RadarSite: 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("RadarSite: update_thread - %s", site->city->code);
 150         site->message = NULL;
 151
 152         gboolean offline = grits_viewer_get_offline(site->viewer);
 153         gchar *nexrad_url = grits_prefs_get_string(site->prefs,
 154                         "aweather/nexrad_url", NULL);
 155
 156         /* Find nearest volume (temporally) */
 157         g_debug("RadarSite: 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 = grits_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("RadarSite: 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  = grits_http_fetch(site->http, uri, local,
 177                         offline ? GRITS_LOCAL : GRITS_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("RadarSite: 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         GRITS_OBJECT(site->level2)->hidden = site->hidden;
 198         site->level2_ref = grits_viewer_add(site->viewer,
 199                         GRITS_OBJECT(site->level2), GRITS_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 = grits_viewer_get_time(site->viewer);
 212         g_debug("RadarSite: 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("RadarSite: update - remove - %s", site->city->code);
 222         if (site->level2_ref) {
 223                 grits_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("RadarSite: 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                 grits_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                 GRITS_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("RadarSite: 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(GritsViewer *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 = grits_marker_new(site->city->name);
 311         GRITS_OBJECT(site->marker)->center = site->city->pos;
 312         GRITS_OBJECT(site->marker)->lod    = EARTH_R*site->city->lod;
 313         site->marker_ref = grits_viewer_add(site->viewer,
 314                         GRITS_OBJECT(site->marker), GRITS_LEVEL_OVERLAY, FALSE);
 315         return FALSE;
 316 }
 317 RadarSite *radar_site_new(city_t *city, GtkWidget *pconfig,
 318                 GritsViewer *viewer, GritsPrefs *prefs, GritsHttp *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    = grits_http_new(G_DIR_SEPARATOR_S
 325                         "nexrad" G_DIR_SEPARATOR_S
 326                         "level2" G_DIR_SEPARATOR_S);
 327         site->city    = city;
 328         site->pconfig = pconfig;
 329
 330         /* Add marker */
 331         g_idle_add_full(G_PRIORITY_LOW, _site_add_marker, site, NULL);
 332
 333
 334         /* Connect signals */
 335         site->location_id  = g_signal_connect(viewer, "location-changed",
 336                         G_CALLBACK(_site_on_location_changed), site);
 337         return site;
 338 }
 339
 340 void radar_site_free(RadarSite *site)
 341 {
 342         radar_site_unload(site);
 343         grits_viewer_remove(site->viewer, site->marker_ref);
 344         if (site->location_id)
 345                 g_signal_handler_disconnect(site->viewer, site->location_id);
 346         grits_http_free(site->http);
 347         g_object_unref(site->viewer);
 348         g_object_unref(site->prefs);
 349         g_free(site);
 350 }
 351
 352
 353 /**************
 354  * RadarConus *
 355  **************/
 356 #define CONUS_NORTH       50.406626367301044
 357 #define CONUS_WEST       -127.620375523875420
 358 #define CONUS_WIDTH       3400.0
 359 #define CONUS_HEIGHT      1600.0
 360 #define CONUS_DEG_PER_PX  0.017971305190311
 361
 362 struct _RadarConus {
 363         GritsViewer *viewer;
 364         GritsHttp   *http;
 365         GtkWidget   *config;
 366         time_t       time;
 367         const gchar *message;
 368         GStaticMutex loading;
 369
 370         gchar       *path;
 371         GritsTile   *tile[2];
 372         gpointer    *tile_ref[2];
 373
 374         guint        time_id;     // "time-changed"     callback ID
 375         guint        refresh_id;  // "refresh"          callback ID
 376 };
 377
 378 void _conus_update_loading(gchar *file, goffset cur,
 379                 goffset total, gpointer _conus)
 380 {
 381         RadarConus *conus = _conus;
 382         GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(conus->config));
 383         double percent = (double)cur/total;
 384         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0));
 385         gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)",
 386                         percent*100, (double)cur/1000000, (double)total/1000000);
 387         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg);
 388         g_free(msg);
 389 }
 390
 391 /* Copy images to graphics memory */
 392 static void _conus_update_end_copy(GritsTile *tile, guchar *pixels)
 393 {
 394         if (!tile->data) {
 395                 tile->data = g_new0(guint, 1);
 396                 glGenTextures(1, tile->data);
 397         }
 398
 399         guint *tex = tile->data;
 400         glBindTexture(GL_TEXTURE_2D, *tex);
 401
 402         glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 403         glPixelStorei(GL_PACK_ALIGNMENT, 1);
 404         glTexImage2D(GL_TEXTURE_2D, 0, 4, 2048, 2048, 0,
 405                         GL_RGBA, GL_UNSIGNED_BYTE, NULL);
 406         glTexSubImage2D(GL_TEXTURE_2D, 0, 1,1, CONUS_WIDTH/2,CONUS_HEIGHT,
 407                         GL_RGBA, GL_UNSIGNED_BYTE, pixels);
 408         tile->coords.n = 1.0/(CONUS_WIDTH/2);
 409         tile->coords.w = 1.0/ CONUS_HEIGHT;
 410         tile->coords.s = tile->coords.n +  CONUS_HEIGHT   / 2048.0;
 411         tile->coords.e = tile->coords.w + (CONUS_WIDTH/2) / 2048.0;
 412         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 413         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 414         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
 415         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
 416         glFlush();
 417 }
 418
 419 /* Split the pixbuf into east and west halves (with 2K sides)
 420  * Also map the pixbuf's alpha values */
 421 static void _conus_update_end_split(guchar *pixels, guchar *west, guchar *east,
 422                 gint width, gint height, gint pxsize)
 423 {
 424         g_debug("Conus: update_end_split");
 425         guchar *out[] = {west,east};
 426         const guchar alphamap[][4] = {
 427                 {0x04, 0xe9, 0xe7, 0x30},
 428                 {0x01, 0x9f, 0xf4, 0x60},
 429                 {0x03, 0x00, 0xf4, 0x90},
 430         };
 431         for (int y = 0; y < height; y++)
 432         for (int x = 0; x < width;  x++) {
 433                 gint subx = x % (width/2);
 434                 gint idx  = x / (width/2);
 435                 guchar *src = &pixels[(y*width+x)*pxsize];
 436                 guchar *dst = &out[idx][(y*(width/2)+subx)*4];
 437                 if (src[0] > 0xe0 &&
 438                     src[1] > 0xe0 &&
 439                     src[2] > 0xe0) {
 440                         dst[3] = 0x00;
 441                 } else {
 442                         dst[0] = src[0];
 443                         dst[1] = src[1];
 444                         dst[2] = src[2];
 445                         dst[3] = 0xff;
 446                         for (int j = 0; j < G_N_ELEMENTS(alphamap); j++)
 447                                 if (src[0] == alphamap[j][0] &&
 448                                     src[1] == alphamap[j][1] &&
 449                                     src[2] == alphamap[j][2])
 450                                         dst[3] = alphamap[j][3];
 451                 }
 452         }
 453 }
 454
 455 gboolean _conus_update_end(gpointer _conus)
 456 {
 457         RadarConus *conus = _conus;
 458         g_debug("Conus: update_end");
 459
 460         /* Check error status */
 461         if (conus->message) {
 462                 g_warning("Conus: update_end - %s", conus->message);
 463                 _gtk_bin_set_child(GTK_BIN(conus->config), gtk_label_new(conus->message));
 464                 goto out;
 465         }
 466
 467         /* Load and pixbuf */
 468         GError *error = NULL;
 469         GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(conus->path, &error);
 470         if (!pixbuf || error) {
 471                 g_warning("Conus: update_end - error loading pixbuf");
 472                 _gtk_bin_set_child(GTK_BIN(conus->config), gtk_label_new("Error loading pixbuf"));
 473                 g_remove(conus->path);
 474                 goto out;
 475         }
 476
 477         /* Split pixels into east/west parts */
 478         guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
 479         gint    width  = gdk_pixbuf_get_width(pixbuf);
 480         gint    height = gdk_pixbuf_get_height(pixbuf);
 481         gint    pxsize = gdk_pixbuf_get_has_alpha(pixbuf) ? 4 : 3;
 482         guchar *pixels_west = g_malloc(4*(width/2)*height);
 483         guchar *pixels_east = g_malloc(4*(width/2)*height);
 484         _conus_update_end_split(pixels, pixels_west, pixels_east,
 485                         width, height, pxsize);
 486         g_object_unref(pixbuf);
 487
 488         /* Copy pixels to graphics memory */
 489         _conus_update_end_copy(conus->tile[0], pixels_west);
 490         _conus_update_end_copy(conus->tile[1], pixels_east);
 491         g_free(pixels_west);
 492         g_free(pixels_east);
 493
 494         /* Update GUI */
 495         gchar *label = g_path_get_basename(conus->path);
 496         _gtk_bin_set_child(GTK_BIN(conus->config), gtk_label_new(label));
 497         gtk_widget_queue_draw(GTK_WIDGET(conus->viewer));
 498         g_free(label);
 499
 500 out:
 501         g_free(conus->path);
 502         g_static_mutex_unlock(&conus->loading);
 503         return FALSE;
 504 }
 505
 506 gpointer _conus_update_thread(gpointer _conus)
 507 {
 508         RadarConus *conus = _conus;
 509         conus->message = NULL;
 510
 511         /* Find nearest */
 512         g_debug("Conus: update_thread - nearest");
 513         gboolean offline = grits_viewer_get_offline(conus->viewer);
 514         gchar *conus_url = "http://radar.weather.gov/Conus/RadarImg/";
 515         GList *files = grits_http_available(conus->http,
 516                         "^Conus_[^\"]*_N0Ronly.gif$", "",
 517                         NULL, (offline ? NULL : conus_url));
 518         gchar *nearest = _find_nearest(conus->time, files, 6, "%Y%m%d_%H%M");
 519         g_list_foreach(files, (GFunc)g_free, NULL);
 520         g_list_free(files);
 521         if (!nearest) {
 522                 conus->message = "No suitable files";
 523                 goto out;
 524         }
 525
 526         /* Fetch the image */
 527         g_debug("Conus: update_thread - fetch");
 528         gchar *uri  = g_strconcat(conus_url, nearest, NULL);
 529         conus->path = grits_http_fetch(conus->http, uri, nearest, GRITS_ONCE,
 530                         _conus_update_loading, conus);
 531         g_free(nearest);
 532         g_free(uri);
 533         if (!conus->path) {
 534                 conus->message = "Fetch failed";
 535                 goto out;
 536         }
 537
 538 out:
 539         g_debug("Conus: update_thread - done");
 540         g_idle_add(_conus_update_end, conus);
 541         return NULL;
 542 }
 543
 544 void _conus_update(RadarConus *conus)
 545 {
 546         if (!g_static_mutex_trylock(&conus->loading))
 547                 return;
 548         conus->time = grits_viewer_get_time(conus->viewer);
 549         g_debug("Conus: update - %d",
 550                         (gint)conus->time);
 551
 552         /* Add a progress bar */
 553         GtkWidget *progress = gtk_progress_bar_new();
 554         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 555         _gtk_bin_set_child(GTK_BIN(conus->config), progress);
 556
 557         g_thread_create(_conus_update_thread, conus, FALSE, NULL);
 558 }
 559
 560 void radar_conus_toggle(RadarConus *conus)
 561 {
 562         GRITS_OBJECT(conus->tile[0])->hidden =
 563                 !GRITS_OBJECT(conus->tile[0])->hidden;
 564         GRITS_OBJECT(conus->tile[1])->hidden =
 565                 !GRITS_OBJECT(conus->tile[1])->hidden;
 566         gtk_widget_queue_draw(GTK_WIDGET(conus->viewer));
 567 }
 568
 569 RadarConus *radar_conus_new(GtkWidget *pconfig,
 570                 GritsViewer *viewer, GritsHttp *http)
 571 {
 572         RadarConus *conus = g_new0(RadarConus, 1);
 573         conus->viewer  = g_object_ref(viewer);
 574         conus->http    = http;
 575         conus->config  = gtk_alignment_new(0, 0, 1, 1);
 576         g_static_mutex_init(&conus->loading);
 577
 578         gdouble south =  CONUS_NORTH - CONUS_DEG_PER_PX*CONUS_HEIGHT;
 579         gdouble east  =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH;
 580         gdouble mid   =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH/2;
 581         conus->tile[0] = grits_tile_new(NULL, CONUS_NORTH, south, mid, CONUS_WEST);
 582         conus->tile[1] = grits_tile_new(NULL, CONUS_NORTH, south, east, mid);
 583         conus->tile[0]->zindex = 2;
 584         conus->tile[1]->zindex = 1;
 585         conus->tile_ref[0] = grits_viewer_add(viewer,
 586                         GRITS_OBJECT(conus->tile[0]), GRITS_LEVEL_WORLD, TRUE);
 587         conus->tile_ref[1] = grits_viewer_add(viewer,
 588                         GRITS_OBJECT(conus->tile[1]), GRITS_LEVEL_WORLD, TRUE);
 589
 590         conus->time_id = g_signal_connect_swapped(viewer, "time-changed",
 591                         G_CALLBACK(_conus_update), conus);
 592         conus->refresh_id = g_signal_connect_swapped(viewer, "refresh",
 593                         G_CALLBACK(_conus_update), conus);
 594
 595         gtk_notebook_append_page(GTK_NOTEBOOK(pconfig), conus->config,
 596                         _gtk_check_label_new("Conus", TRUE,
 597                                 G_CALLBACK(radar_conus_toggle), conus));
 598         _conus_update(conus);
 599         return conus;
 600 }
 601
 602 void radar_conus_free(RadarConus *conus)
 603 {
 604         g_signal_handler_disconnect(conus->viewer, conus->time_id);
 605         g_signal_handler_disconnect(conus->viewer, conus->refresh_id);
 606
 607         for (int i = 0; i < 2; i++) {
 608                 GritsTile *tile = conus->tile[i];
 609                 gpointer   ref  = conus->tile_ref[i];
 610                 if (tile->data) {
 611                         glDeleteTextures(1, tile->data);
 612                         g_free(tile->data);
 613                 }
 614                 grits_viewer_remove(conus->viewer, ref);
 615         }
 616
 617         g_object_unref(conus->viewer);
 618         g_free(conus);
 619 }
 620
 621
 622 /********************
 623  * GritsPluginRadar *
 624  ********************/
 625 static void _draw_hud(GritsCallback *callback, GritsOpenGL *opengl, gpointer _self)
 626 {
 627         /* TODO, pick correct colormaps */
 628         AWeatherColormap *colormap = &colormaps[0];
 629
 630         g_debug("GritsPluginRadar: _draw_hud");
 631         /* Print the color table */
 632         glMatrixMode(GL_MODELVIEW ); glLoadIdentity();
 633         glMatrixMode(GL_PROJECTION); glLoadIdentity();
 634         glDisable(GL_TEXTURE_2D);
 635         glDisable(GL_ALPHA_TEST);
 636         glDisable(GL_CULL_FACE);
 637         glDisable(GL_LIGHTING);
 638         glEnable(GL_COLOR_MATERIAL);
 639         glBegin(GL_QUADS);
 640         int i;
 641         for (i = 0; i < 256; i++) {
 642                 glColor4ubv(colormap->data[i]);
 643                 glVertex3f(-1.0, (float)((i  ) - 256/2)/(256/2), 0.0); // bot left
 644                 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
 645                 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
 646                 glVertex3f(-0.9, (float)((i  ) - 256/2)/(256/2), 0.0); // bot right
 647         }
 648         glEnd();
 649 }
 650
 651 /* Methods */
 652 GritsPluginRadar *grits_plugin_radar_new(GritsViewer *viewer, GritsPrefs *prefs)
 653 {
 654         /* TODO: move to constructor if possible */
 655         g_debug("GritsPluginRadar: new");
 656         GritsPluginRadar *self = g_object_new(GRITS_TYPE_PLUGIN_RADAR, NULL);
 657         self->viewer = viewer;
 658         self->prefs  = prefs;
 659
 660         /* Load HUD */
 661         GritsCallback *hud_cb = grits_callback_new(_draw_hud, self);
 662         self->hud_ref = grits_viewer_add(viewer, GRITS_OBJECT(hud_cb), GRITS_LEVEL_HUD, FALSE);
 663
 664         /* Load Conus */
 665         self->conus = radar_conus_new(self->config, self->viewer, self->conus_http);
 666
 667         /* Load radar sites */
 668         for (city_t *city = cities; city->type; city++) {
 669                 if (city->type != LOCATION_CITY)
 670                         continue;
 671                 RadarSite *site = radar_site_new(city, self->config,
 672                                 self->viewer, self->prefs, self->sites_http);
 673                 g_hash_table_insert(self->sites, city->code, site);
 674         }
 675
 676         return self;
 677 }
 678
 679 static GtkWidget *grits_plugin_radar_get_config(GritsPlugin *_self)
 680 {
 681         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(_self);
 682         return self->config;
 683 }
 684
 685 /* GObject code */
 686 static void grits_plugin_radar_plugin_init(GritsPluginInterface *iface);
 687 G_DEFINE_TYPE_WITH_CODE(GritsPluginRadar, grits_plugin_radar, G_TYPE_OBJECT,
 688                 G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
 689                         grits_plugin_radar_plugin_init));
 690 static void grits_plugin_radar_plugin_init(GritsPluginInterface *iface)
 691 {
 692         g_debug("GritsPluginRadar: plugin_init");
 693         /* Add methods to the interface */
 694         iface->get_config = grits_plugin_radar_get_config;
 695 }
 696 static void grits_plugin_radar_init(GritsPluginRadar *self)
 697 {
 698         g_debug("GritsPluginRadar: class_init");
 699         /* Set defaults */
 700         self->sites_http = grits_http_new(G_DIR_SEPARATOR_S
 701                         "nexrad" G_DIR_SEPARATOR_S
 702                         "level2" G_DIR_SEPARATOR_S);
 703         self->conus_http = grits_http_new(G_DIR_SEPARATOR_S
 704                         "nexrad" G_DIR_SEPARATOR_S
 705                         "conus"  G_DIR_SEPARATOR_S);
 706         self->sites      = g_hash_table_new_full(g_str_hash, g_str_equal,
 707                                 NULL, (GDestroyNotify)radar_site_free);
 708         self->config     = gtk_notebook_new();
 709         /* Need to position on the top because of Win32 bug */
 710         gtk_notebook_set_tab_pos(GTK_NOTEBOOK(self->config), GTK_POS_BOTTOM);
 711 }
 712 static void grits_plugin_radar_dispose(GObject *gobject)
 713 {
 714         g_debug("GritsPluginRadar: dispose");
 715         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(gobject);
 716         grits_viewer_remove(self->viewer, self->hud_ref);
 717         radar_conus_free(self->conus);
 718         /* Drop references */
 719         G_OBJECT_CLASS(grits_plugin_radar_parent_class)->dispose(gobject);
 720 }
 721 static void grits_plugin_radar_finalize(GObject *gobject)
 722 {
 723         g_debug("GritsPluginRadar: finalize");
 724         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(gobject);
 725         /* Free data */
 726         grits_http_free(self->conus_http);
 727         grits_http_free(self->sites_http);
 728         g_hash_table_destroy(self->sites);
 729         gtk_widget_destroy(self->config);
 730         G_OBJECT_CLASS(grits_plugin_radar_parent_class)->finalize(gobject);
 731
 732 }
 733 static void grits_plugin_radar_class_init(GritsPluginRadarClass *klass)
 734 {
 735         g_debug("GritsPluginRadar: class_init");
 736         GObjectClass *gobject_class = (GObjectClass*)klass;
 737         gobject_class->dispose  = grits_plugin_radar_dispose;
 738         gobject_class->finalize = grits_plugin_radar_finalize;
 739 }