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 #include <config.h>
  19 #include <gtk/gtk.h>
  20 #include <gtk/gtkgl.h>
  21 #include <gio/gio.h>
  22 #include <GL/gl.h>
  23 #include <math.h>
  24 #include <rsl.h>
  25
  26 #include <gis.h>
  27
  28 #include "radar.h"
  29 #include "marching.h"
  30 #include "../aweather-location.h"
  31
  32
  33 /**************************
  34  * Data loading functions *
  35  **************************/
  36 /* Convert a sweep to an 2d array of data points */
  37 static void _bscan_sweep(GisPluginRadar *self, Sweep *sweep, colormap_t *colormap,
  38                 guint8 **data, int *width, int *height)
  39 {
  40         /* Calculate max number of bins */
  41         int max_bins = 0;
  42         for (int i = 0; i < sweep->h.nrays; i++)
  43                 max_bins = MAX(max_bins, sweep->ray[i]->h.nbins);
  44
  45         /* Allocate buffer using max number of bins for each ray */
  46         guint8 *buf = g_malloc0(sweep->h.nrays * max_bins * 4);
  47
  48         /* Fill the data */
  49         for (int ri = 0; ri < sweep->h.nrays; ri++) {
  50                 Ray *ray  = sweep->ray[ri];
  51                 for (int bi = 0; bi < ray->h.nbins; bi++) {
  52                         /* copy RGBA into buffer */
  53                         //guint val   = dz_f(ray->range[bi]);
  54                         guint8 val   = (guint8)ray->h.f(ray->range[bi]);
  55                         guint  buf_i = (ri*max_bins+bi)*4;
  56                         buf[buf_i+0] = colormap->data[val][0];
  57                         buf[buf_i+1] = colormap->data[val][1];
  58                         buf[buf_i+2] = colormap->data[val][2];
  59                         buf[buf_i+3] = colormap->data[val][3]*0.75; // TESTING
  60                         if (val == BADVAL     || val == RFVAL      || val == APFLAG ||
  61                             val == NOTFOUND_H || val == NOTFOUND_V || val == NOECHO) {
  62                                 buf[buf_i+3] = 0x00; // transparent
  63                         }
  64                 }
  65         }
  66
  67         /* set output */
  68         *width  = max_bins;
  69         *height = sweep->h.nrays;
  70         *data   = buf;
  71 }
  72
  73 /* Load a sweep as the active texture */
  74 static void _load_sweep(GisPluginRadar *self, Sweep *sweep)
  75 {
  76         GisViewer *viewer = self->viewer;
  77         self->cur_sweep = sweep;
  78         int height, width;
  79         guint8 *data;
  80         _bscan_sweep(self, sweep, self->cur_colormap, &data, &width, &height);
  81         glDeleteTextures(1, &self->cur_sweep_tex);
  82         glGenTextures(1, &self->cur_sweep_tex);
  83         glBindTexture(GL_TEXTURE_2D, self->cur_sweep_tex);
  84         glPixelStorei(GL_PACK_ALIGNMENT, 1);
  85         glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
  86         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  87         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  88         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0,
  89                         GL_RGBA, GL_UNSIGNED_BYTE, data);
  90         g_free(data);
  91         gtk_widget_queue_draw(GTK_WIDGET(viewer));
  92 }
  93
  94 static void _load_colormap(GisPluginRadar *self, gchar *table)
  95 {
  96         /* Set colormap so we can draw it on expose */
  97         for (int i = 0; colormaps[i].name; i++)
  98                 if (g_str_equal(colormaps[i].name, table))
  99                         self->cur_colormap = &colormaps[i];
 100 }
 101
 102 /* Add selectors to the config area for the sweeps */
 103 static void _on_sweep_clicked(GtkRadioButton *button, gpointer _self);
 104 static void _load_radar_gui(GisPluginRadar *self, Radar *radar)
 105 {
 106         /* Clear existing items */
 107         GtkWidget *child = gtk_bin_get_child(GTK_BIN(self->config_body));
 108         if (child)
 109                 gtk_widget_destroy(child);
 110
 111         gdouble elev;
 112         guint rows = 1, cols = 1, cur_cols;
 113         gchar row_label_str[64], col_label_str[64], button_str[64];
 114         GtkWidget *row_label, *col_label, *button = NULL, *elev_box = NULL;
 115         GtkWidget *table = gtk_table_new(rows, cols, FALSE);
 116
 117         for (guint vi = 0; vi < radar->h.nvolumes; vi++) {
 118                 Volume *vol = radar->v[vi];
 119                 if (vol == NULL) continue;
 120                 rows++; cols = 1; elev = 0;
 121
 122                 /* Row label */
 123                 g_snprintf(row_label_str, 64, "<b>%s:</b>", vol->h.type_str);
 124                 row_label = gtk_label_new(row_label_str);
 125                 gtk_label_set_use_markup(GTK_LABEL(row_label), TRUE);
 126                 gtk_misc_set_alignment(GTK_MISC(row_label), 1, 0.5);
 127                 gtk_table_attach(GTK_TABLE(table), row_label,
 128                                 0,1, rows-1,rows, GTK_FILL,GTK_FILL, 5,0);
 129
 130                 for (guint si = 0; si < vol->h.nsweeps; si++) {
 131                         Sweep *sweep = vol->sweep[si];
 132                         if (sweep == NULL || sweep->h.elev == 0) continue;
 133                         if (sweep->h.elev != elev) {
 134                                 cols++;
 135                                 elev = sweep->h.elev;
 136
 137                                 /* Column label */
 138                                 g_object_get(table, "n-columns", &cur_cols, NULL);
 139                                 if (cols >  cur_cols) {
 140                                         g_snprintf(col_label_str, 64, "<b>%.2f°</b>", elev);
 141                                         col_label = gtk_label_new(col_label_str);
 142                                         gtk_label_set_use_markup(GTK_LABEL(col_label), TRUE);
 143                                         gtk_widget_set_size_request(col_label, 50, -1);
 144                                         gtk_table_attach(GTK_TABLE(table), col_label,
 145                                                         cols-1,cols, 0,1, GTK_FILL,GTK_FILL, 0,0);
 146                                 }
 147
 148                                 elev_box = gtk_hbox_new(TRUE, 0);
 149                                 gtk_table_attach(GTK_TABLE(table), elev_box,
 150                                                 cols-1,cols, rows-1,rows, GTK_FILL,GTK_FILL, 0,0);
 151                         }
 152
 153
 154                         /* Button */
 155                         g_snprintf(button_str, 64, "%3.2f", elev);
 156                         button = gtk_radio_button_new_with_label_from_widget(
 157                                         GTK_RADIO_BUTTON(button), button_str);
 158                         gtk_widget_set_size_request(button, -1, 26);
 159                         //button = gtk_radio_button_new_from_widget(GTK_RADIO_BUTTON(button));
 160                         //gtk_widget_set_size_request(button, -1, 22);
 161                         g_object_set(button, "draw-indicator", FALSE, NULL);
 162                         gtk_box_pack_end(GTK_BOX(elev_box), button, TRUE, TRUE, 0);
 163
 164                         g_object_set_data(G_OBJECT(button), "type",  vol->h.type_str);
 165                         g_object_set_data(G_OBJECT(button), "sweep", sweep);
 166                         g_signal_connect(button, "clicked", G_CALLBACK(_on_sweep_clicked), self);
 167                 }
 168         }
 169         gtk_container_add(GTK_CONTAINER(self->config_body), table);
 170         gtk_widget_show_all(table);
 171 }
 172
 173 static void _gis_plugin_radar_grid_set(GRIDCELL *grid, int gi, Ray *ray, int bi)
 174 {
 175         Range range = ray->range[bi];
 176
 177         double angle = deg2rad(ray->h.azimuth);
 178         double tilt  = deg2rad(ray->h.elev);
 179
 180         double lx    = sin(angle);
 181         double ly    = cos(angle);
 182         double lz    = sin(tilt);
 183
 184         double dist   = bi*ray->h.gate_size + ray->h.range_bin1;
 185
 186         grid->p[gi].x = lx*dist;
 187         grid->p[gi].y = ly*dist;
 188         grid->p[gi].z = lz*dist;
 189
 190         guint8 val = (guint8)ray->h.f(ray->range[bi]);
 191         if (val == BADVAL     || val == RFVAL      || val == APFLAG ||
 192             val == NOTFOUND_H || val == NOTFOUND_V || val == NOECHO ||
 193             val > 80)
 194                 val = 0;
 195         grid->val[gi] = (float)val;
 196         //g_debug("(%.2f,%.2f,%.2f) - (%.0f,%.0f,%.0f) = %d",
 197         //      angle, tilt, dist,
 198         //      grid->p[gi].x,
 199         //      grid->p[gi].y,
 200         //      grid->p[gi].z,
 201         //      val);
 202 }
 203
 204 /* Load a radar from a decompressed file */
 205 static void _load_radar(GisPluginRadar *self, gchar *radar_file)
 206 {
 207         char *dir  = g_path_get_dirname(radar_file);
 208         char *site = g_path_get_basename(dir);
 209         g_free(dir);
 210         g_debug("GisPluginRadar: load_radar - Loading new radar");
 211         RSL_read_these_sweeps("all", NULL);
 212         Radar *radar = self->cur_radar = RSL_wsr88d_to_radar(radar_file, site);
 213         if (radar == NULL) {
 214                 g_warning("fail to load radar: path=%s, site=%s", radar_file, site);
 215                 g_free(site);
 216                 return;
 217         }
 218         g_free(site);
 219
 220 #ifdef MARCHING
 221         /* Load the surface */
 222         if (self->cur_triangles) {
 223                 g_free(self->cur_triangles);
 224                 self->cur_triangles = NULL;
 225         }
 226         self->cur_num_triangles = 0;
 227         int x = 1;
 228         for (guint vi = 0; vi < radar->h.nvolumes; vi++) {
 229                 if (radar->v[vi] == NULL) continue;
 230
 231                 for (guint si = 0; si+1 < radar->v[vi]->h.nsweeps; si++) {
 232                         Sweep *sweep0 = radar->v[vi]->sweep[si+0];
 233                         Sweep *sweep1 = radar->v[vi]->sweep[si+1];
 234
 235                         //g_debug("GisPluginRadar: load_radar: sweep[%3d-%3d] -- nrays = %d, %d",
 236                         //      si, si+1,sweep0->h.nrays, sweep1->h.nrays);
 237
 238                         /* Skip super->regular resolution switch for now */
 239                         if (sweep0 == NULL || sweep0->h.elev == 0 ||
 240                             sweep1 == NULL || sweep1->h.elev == 0 ||
 241                             sweep0->h.nrays != sweep1->h.nrays)
 242                                 continue;
 243
 244                         /* We repack the arrays so that raysX[0] is always north, etc */
 245                         Ray **rays0 = g_malloc0(sizeof(Ray*)*sweep0->h.nrays);
 246                         Ray **rays1 = g_malloc0(sizeof(Ray*)*sweep1->h.nrays);
 247
 248                         for (guint ri = 0; ri < sweep0->h.nrays; ri++)
 249                                 rays0[(guint)(sweep0->ray[ri]->h.azimuth * sweep0->h.nrays / 360)] =
 250                                         sweep0->ray[ri];
 251                         for (guint ri = 0; ri < sweep1->h.nrays; ri++)
 252                                 rays1[(guint)(sweep1->ray[ri]->h.azimuth * sweep1->h.nrays / 360)] =
 253                                         sweep1->ray[ri];
 254
 255                         for (guint ri = 0; ri+x < sweep0->h.nrays; ri+=x) {
 256                                 //g_debug("GisPluginRadar: load_radar - ray[%3d-%3d] -- nbins = %d, %d, %d, %d",
 257                                 //      ri, ri+x,
 258                                 //      rays0[ri  ]->h.nbins,
 259                                 //      rays0[ri+1]->h.nbins,
 260                                 //      rays1[ri  ]->h.nbins,
 261                                 //      rays1[ri+1]->h.nbins);
 262
 263                                 for (guint bi = 0; bi+x < rays1[ri]->h.nbins; bi+=x) {
 264                                         GRIDCELL grid = {};
 265                                         _gis_plugin_radar_grid_set(&grid, 7, rays0[(ri  )%sweep0->h.nrays], bi+x);
 266                                         _gis_plugin_radar_grid_set(&grid, 6, rays0[(ri+x)%sweep0->h.nrays], bi+x);
 267                                         _gis_plugin_radar_grid_set(&grid, 5, rays0[(ri+x)%sweep0->h.nrays], bi  );
 268                                         _gis_plugin_radar_grid_set(&grid, 4, rays0[(ri  )%sweep0->h.nrays], bi  );
 269                                         _gis_plugin_radar_grid_set(&grid, 3, rays1[(ri  )%sweep0->h.nrays], bi+x);
 270                                         _gis_plugin_radar_grid_set(&grid, 2, rays1[(ri+x)%sweep0->h.nrays], bi+x);
 271                                         _gis_plugin_radar_grid_set(&grid, 1, rays1[(ri+x)%sweep0->h.nrays], bi  );
 272                                         _gis_plugin_radar_grid_set(&grid, 0, rays1[(ri  )%sweep0->h.nrays], bi  );
 273
 274                                         TRIANGLE tris[10];
 275                                         int n = march_one_cube(grid, 40, tris);
 276
 277                                         self->cur_triangles = g_realloc(self->cur_triangles,
 278                                                 (self->cur_num_triangles+n)*sizeof(TRIANGLE));
 279                                         for (int i = 0; i < n; i++) {
 280                                                 //g_debug("triangle: ");
 281                                                 //g_debug("\t(%f,%f,%f)", tris[i].p[0].x, tris[i].p[0].y, tris[i].p[0].z);
 282                                                 //g_debug("\t(%f,%f,%f)", tris[i].p[1].x, tris[i].p[1].y, tris[i].p[1].z);
 283                                                 //g_debug("\t(%f,%f,%f)", tris[i].p[2].x, tris[i].p[2].y, tris[i].p[2].z);
 284                                                 self->cur_triangles[self->cur_num_triangles+i] = tris[i];
 285                                         }
 286                                         self->cur_num_triangles += n;
 287                                         //g_debug(" ");
 288                                 }
 289                         }
 290                 }
 291                 break; // Exit after first volume (reflectivity)
 292         }
 293 #endif
 294
 295         /* Load the first sweep by default */
 296         if (radar->h.nvolumes < 1 || radar->v[0]->h.nsweeps < 1) {
 297                 g_warning("No sweeps found\n");
 298         } else {
 299                 /* load first available sweep */
 300                 for (int vi = 0; vi < radar->h.nvolumes; vi++) {
 301                         if (radar->v[vi]== NULL) continue;
 302                         for (int si = 0; si < radar->v[vi]->h.nsweeps; si++) {
 303                                 if (radar->v[vi]->sweep[si]== NULL) continue;
 304                                 _load_colormap(self, radar->v[vi]->h.type_str);
 305                                 _load_sweep(self, radar->v[vi]->sweep[si]);
 306                                 break;
 307                         }
 308                         break;
 309                 }
 310         }
 311
 312         _load_radar_gui(self, radar);
 313 }
 314
 315 typedef struct {
 316         GisPluginRadar *self;
 317         gchar *radar_file;
 318 } decompressed_t;
 319
 320 static void _decompressed_cb(GPid pid, gint status, gpointer _udata)
 321 {
 322         g_debug("GisPluginRadar: decompressed_cb");
 323         decompressed_t *udata = _udata;
 324         if (status != 0) {
 325                 g_warning("wsr88ddec exited with status %d", status);
 326                 return;
 327         }
 328         _load_radar(udata->self, udata->radar_file);
 329         g_spawn_close_pid(pid);
 330         g_free(udata->radar_file);
 331         g_free(udata);
 332 }
 333
 334 static void _cache_chunk_cb(char *path, goffset cur, goffset total, gpointer _self)
 335 {
 336         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 337         double percent = (double)cur/total;
 338
 339         //g_debug("GisPluginRadar: cache_chunk_cb - %lld/%lld = %.2f%%",
 340         //              cur, total, percent*100);
 341
 342         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(self->progress_bar), MIN(percent, 1.0));
 343
 344         gchar *msg = g_strdup_printf("Loading radar... %5.1f%% (%.2f/%.2f MB)",
 345                         percent*100, (double)cur/1000000, (double)total/1000000);
 346         gtk_label_set_text(GTK_LABEL(self->progress_label), msg);
 347         g_free(msg);
 348 }
 349
 350 static void _cache_done_cb(char *path, gboolean updated, gpointer _self)
 351 {
 352         g_debug("GisPluginRadar: cache_done_cb - updated = %d", updated);
 353         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 354         char *decompressed = g_strconcat(path, ".raw", NULL);
 355         if (!updated && g_file_test(decompressed, G_FILE_TEST_EXISTS)) {
 356                 _load_radar(self, decompressed);
 357                 return;
 358         }
 359
 360         decompressed_t *udata = g_malloc(sizeof(decompressed_t));
 361         udata->self       = self;
 362         udata->radar_file = decompressed;
 363         g_debug("GisPluginRadar: cache_done_cb - File updated, decompressing..");
 364         char *argv[] = {"wsr88ddec", path, decompressed, NULL};
 365         GPid pid;
 366         GError *error = NULL;
 367         g_spawn_async(
 368                 NULL,    // const gchar *working_directory,
 369                 argv,    // gchar **argv,
 370                 NULL,    // gchar **envp,
 371                 G_SPAWN_SEARCH_PATH|
 372                 G_SPAWN_DO_NOT_REAP_CHILD,
 373                          // GSpawnFlags flags,
 374                 NULL,    // GSpawnChildSetupFunc child_setup,
 375                 NULL,    // gpointer user_data,
 376                 &pid,    // GPid *child_pid,
 377                 &error); // GError **error
 378         if (error) {
 379                 gchar *message = g_strdup_printf("Unable to decompress WSR88D data: %s",
 380                                 error->message);
 381                 g_warning("%s", message);
 382                 GtkWidget *child = gtk_bin_get_child(GTK_BIN(self->config_body));
 383                 if (child)
 384                         gtk_widget_destroy(child);
 385                 gtk_container_add(GTK_CONTAINER(self->config_body), gtk_label_new(message));
 386                 gtk_widget_show_all(self->config_body);
 387                 g_error_free(error);
 388                 g_free(message);
 389         }
 390         g_child_watch_add(pid, _decompressed_cb, udata);
 391 }
 392
 393 static void _set_radar(GisPluginRadar *self, const char *site, const char *time)
 394 {
 395         if (!site || !time)
 396                 return;
 397         g_debug("GisPluginRadar: set_radar - %s - %s", site, time);
 398
 399         /* Set up progress bar */
 400         GtkWidget *child = gtk_bin_get_child(GTK_BIN(self->config_body));
 401         if (child) gtk_widget_destroy(child);
 402
 403         GtkWidget *vbox = gtk_vbox_new(FALSE, 10);
 404         gtk_container_set_border_width(GTK_CONTAINER(vbox), 10);
 405         self->progress_bar   = gtk_progress_bar_new();
 406         self->progress_label = gtk_label_new("Loading radar...");
 407         gtk_box_pack_start(GTK_BOX(vbox), self->progress_bar,   FALSE, FALSE, 0);
 408         gtk_box_pack_start(GTK_BOX(vbox), self->progress_label, FALSE, FALSE, 0);
 409         gtk_container_add(GTK_CONTAINER(self->config_body), vbox);
 410         gtk_widget_show_all(self->config_body);
 411
 412         /* Clear radar */
 413         if (self->cur_radar)
 414                 RSL_free_radar(self->cur_radar);
 415         self->cur_radar = NULL;
 416         self->cur_sweep = NULL;
 417         gtk_widget_queue_draw(GTK_WIDGET(self->viewer));
 418
 419         /* Start loading the new radar */
 420         soup_session_abort(self->http->soup);
 421         /* format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323 */
 422         gchar *base  = gis_prefs_get_string(self->prefs, "aweather/nexrad_url", NULL);
 423         gchar *local = g_strdup_printf("%s/%s_%s", site, site, time);
 424         gchar *uri   = g_strconcat(base, "/", local, NULL);
 425         GisCacheType mode = gis_viewer_get_offline(self->viewer) ? GIS_LOCAL : GIS_UPDATE;
 426         gchar *path  = gis_http_fetch(self->http, uri, local, mode, _cache_chunk_cb, self);
 427         if (path) {
 428                 _cache_done_cb(path, TRUE, self);
 429                 g_free(path);
 430         }
 431 }
 432
 433
 434 /*************
 435  * Callbacks *
 436  *************/
 437 static void _on_sweep_clicked(GtkRadioButton *button, gpointer _self)
 438 {
 439         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 440         _load_colormap(self, g_object_get_data(G_OBJECT(button), "type" ));
 441         _load_sweep   (self, g_object_get_data(G_OBJECT(button), "sweep"));
 442 }
 443
 444 static void _on_time_changed(GisViewer *viewer, const char *time, gpointer _self)
 445 {
 446         g_debug("GisPluginRadar: _on_time_changed");
 447         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 448         g_free(self->cur_time);
 449         self->cur_time = g_strdup(time);
 450         _set_radar(self, self->cur_site, self->cur_time);
 451 }
 452
 453 static void _on_location_changed(GisViewer *viewer,
 454                 gdouble lat, gdouble lon, gdouble elev,
 455                 gpointer _self)
 456 {
 457         g_debug("GisPluginRadar: _on_location_changed");
 458         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 459         gdouble min_dist = EARTH_R / 5;
 460         city_t *city, *min_city = NULL;
 461         for (city = cities; city->type; city++) {
 462                 if (city->type != LOCATION_CITY)
 463                         continue;
 464                 gdouble city_loc[3] = {};
 465                 gdouble eye_loc[3]  = {lat, lon, elev};
 466                 lle2xyz(city->lat, city->lon, city->elev,
 467                                 &city_loc[0], &city_loc[1], &city_loc[2]);
 468                 lle2xyz(lat, lon, elev,
 469                                 &eye_loc[0], &eye_loc[1], &eye_loc[2]);
 470                 gdouble dist = distd(city_loc, eye_loc);
 471                 if (dist < min_dist) {
 472                         min_dist = dist;
 473                         min_city = city;
 474                 }
 475         }
 476         static city_t *last_city = NULL;
 477         if (min_city && min_city != last_city) {
 478                 self->cur_site = min_city->code;
 479                 _set_radar(self, self->cur_site, self->cur_time);
 480         }
 481         last_city = min_city;
 482 }
 483
 484 static gpointer _draw_radar(GisCallback *callback, gpointer _self)
 485 {
 486         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 487
 488         /* Draw wsr88d */
 489         if (self->cur_sweep == NULL)
 490                 return NULL;
 491         g_debug("GisPluginRadar: _draw_radar");
 492         Sweep *sweep = self->cur_sweep;
 493
 494 #ifdef MARCHING
 495         /* Draw the surface */
 496         glMatrixMode(GL_MODELVIEW);
 497         glPushMatrix();
 498         glDisable(GL_TEXTURE_2D);
 499         float light_ambient[]  = {0.1f, 0.1f, 0.0f};
 500         float light_diffuse[]  = {0.9f, 0.9f, 0.9f};
 501         float light_position[] = {-300000.0f, 500000.0f, 400000.0f, 1.0f};
 502         glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
 503         glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
 504         glLightfv(GL_LIGHT0, GL_POSITION, light_position);
 505         glEnable(GL_LIGHT0);
 506         glEnable(GL_LIGHTING);
 507         glEnable(GL_COLOR_MATERIAL);
 508         glColor4f(1,1,1,0.75);
 509         g_debug("ntri=%d", self->cur_num_triangles);
 510         glBegin(GL_TRIANGLES);
 511         for (int i = 0; i < self->cur_num_triangles; i++) {
 512                 TRIANGLE t = self->cur_triangles[i];
 513                 do_normal(t.p[0].x, t.p[0].y, t.p[0].z,
 514                           t.p[1].x, t.p[1].y, t.p[1].z,
 515                           t.p[2].x, t.p[2].y, t.p[2].z);
 516                 glVertex3f(t.p[0].x, t.p[0].y, t.p[0].z);
 517                 glVertex3f(t.p[1].x, t.p[1].y, t.p[1].z);
 518                 glVertex3f(t.p[2].x, t.p[2].y, t.p[2].z);
 519         }
 520         glEnd();
 521         glPopMatrix();
 522 #endif
 523
 524         g_debug("GisPluginRadar: _draw_radar - setting camera");
 525         Radar_header *h = &self->cur_radar->h;
 526         gdouble lat  = (double)h->latd + (double)h->latm/60 + (double)h->lats/(60*60);
 527         gdouble lon  = (double)h->lond + (double)h->lonm/60 + (double)h->lons/(60*60);
 528         gdouble elev = h->height;
 529         gis_viewer_center_position(self->viewer, lat, lon, elev);
 530
 531         glDisable(GL_ALPHA_TEST);
 532         glDisable(GL_CULL_FACE);
 533         glDisable(GL_LIGHTING);
 534         glEnable(GL_TEXTURE_2D);
 535         glEnable(GL_POLYGON_OFFSET_FILL);
 536         glPolygonOffset(1.0, -2.0);
 537         glColor4f(1,1,1,1);
 538
 539         /* Draw the rays */
 540         glBindTexture(GL_TEXTURE_2D, self->cur_sweep_tex);
 541         g_message("Tex = %d", self->cur_sweep_tex);
 542         glBegin(GL_TRIANGLE_STRIP);
 543         for (int ri = 0; ri <= sweep->h.nrays; ri++) {
 544                 Ray  *ray = NULL;
 545                 double angle = 0;
 546                 if (ri < sweep->h.nrays) {
 547                         ray = sweep->ray[ri];
 548                         angle = deg2rad(ray->h.azimuth - ((double)ray->h.beam_width/2.));
 549                 } else {
 550                         /* Do the right side of the last sweep */
 551                         ray = sweep->ray[ri-1];
 552                         angle = deg2rad(ray->h.azimuth + ((double)ray->h.beam_width/2.));
 553                 }
 554
 555                 double lx = sin(angle);
 556                 double ly = cos(angle);
 557
 558                 double near_dist = ray->h.range_bin1;
 559                 double far_dist  = ray->h.nbins*ray->h.gate_size + ray->h.range_bin1;
 560
 561                 /* (find middle of bin) / scale for opengl */
 562                 // near left
 563                 glTexCoord2f(0.0, (double)ri/sweep->h.nrays-0.01);
 564                 glVertex3f(lx*near_dist, ly*near_dist, 2.0);
 565
 566                 // far  left
 567                 // todo: correct range-height function
 568                 double height = sin(deg2rad(ray->h.elev)) * far_dist;
 569                 glTexCoord2f(1.0, (double)ri/sweep->h.nrays-0.01);
 570                 glVertex3f(lx*far_dist,  ly*far_dist, height);
 571         }
 572         glEnd();
 573         //g_print("ri=%d, nr=%d, bw=%f\n", _ri, sweep->h.nrays, sweep->h.beam_width);
 574
 575         /* Texture debug */
 576         //glBegin(GL_QUADS);
 577         //glTexCoord2d( 0.,  0.); glVertex3f(-500.,   0., 0.); // bot left
 578         //glTexCoord2d( 0.,  1.); glVertex3f(-500., 500., 0.); // top left
 579         //glTexCoord2d( 1.,  1.); glVertex3f( 0.,   500., 3.); // top right
 580         //glTexCoord2d( 1.,  0.); glVertex3f( 0.,     0., 3.); // bot right
 581         //glEnd();
 582
 583         return NULL;
 584 }
 585
 586 static gpointer _draw_hud(GisCallback *callback, gpointer _self)
 587 {
 588         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 589         if (self->cur_sweep == NULL)
 590                 return NULL;
 591         g_debug("GisPluginRadar: _draw_hud");
 592
 593         /* Print the color table */
 594         glMatrixMode(GL_MODELVIEW ); glLoadIdentity();
 595         glMatrixMode(GL_PROJECTION); glLoadIdentity();
 596         glDisable(GL_TEXTURE_2D);
 597         glDisable(GL_ALPHA_TEST);
 598         glDisable(GL_CULL_FACE);
 599         glDisable(GL_LIGHTING);
 600         glEnable(GL_COLOR_MATERIAL);
 601         glBegin(GL_QUADS);
 602         int i;
 603         for (i = 0; i < 256; i++) {
 604                 glColor4ubv(self->cur_colormap->data[i]);
 605                 glVertex3f(-1.0, (float)((i  ) - 256/2)/(256/2), 0.0); // bot left
 606                 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
 607                 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
 608                 glVertex3f(-0.9, (float)((i  ) - 256/2)/(256/2), 0.0); // bot right
 609         }
 610         glEnd();
 611
 612         return NULL;
 613 }
 614
 615
 616 /***********
 617  * Methods *
 618  ***********/
 619 GisPluginRadar *gis_plugin_radar_new(GisViewer *viewer, GisPrefs *prefs)
 620 {
 621         /* TODO: move to constructor if possible */
 622         g_debug("GisPluginRadar: new");
 623         GisPluginRadar *self = g_object_new(GIS_TYPE_PLUGIN_RADAR, NULL);
 624         self->viewer = viewer;
 625         self->prefs  = prefs;
 626         self->time_changed_id = g_signal_connect(viewer, "time-changed",
 627                         G_CALLBACK(_on_time_changed), self);
 628         self->location_changed_id = g_signal_connect(viewer, "location-changed",
 629                         G_CALLBACK(_on_location_changed), self);
 630
 631         for (city_t *city = cities; city->type; city++) {
 632                 if (city->type != LOCATION_CITY)
 633                         continue;
 634                 g_debug("Adding marker for %s %s", city->code, city->label);
 635                 GisMarker *marker = gis_marker_new(city->label);
 636                 gis_point_set_lle(gis_object_center(GIS_OBJECT(marker)),
 637                                 city->lat, city->lon, city->elev);
 638                 GIS_OBJECT(marker)->lod = EARTH_R/2;
 639                 gis_viewer_add(self->viewer, GIS_OBJECT(marker), GIS_LEVEL_OVERLAY, FALSE);
 640         }
 641
 642         /* Add renderers */
 643         GisCallback *radar_cb = gis_callback_new(_draw_radar, self);
 644         GisCallback *hud_cb   = gis_callback_new(_draw_hud, self);
 645
 646         gis_viewer_add(viewer, GIS_OBJECT(radar_cb),    GIS_LEVEL_WORLD, TRUE);
 647         gis_viewer_add(viewer, GIS_OBJECT(hud_cb),      GIS_LEVEL_HUD,   FALSE);
 648
 649         return self;
 650 }
 651
 652 static GtkWidget *gis_plugin_radar_get_config(GisPlugin *_self)
 653 {
 654         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 655         return self->config_body;
 656 }
 657
 658
 659 /****************
 660  * GObject code *
 661  ****************/
 662 /* Plugin init */
 663 static void gis_plugin_radar_plugin_init(GisPluginInterface *iface);
 664 G_DEFINE_TYPE_WITH_CODE(GisPluginRadar, gis_plugin_radar, G_TYPE_OBJECT,
 665                 G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
 666                         gis_plugin_radar_plugin_init));
 667 static void gis_plugin_radar_plugin_init(GisPluginInterface *iface)
 668 {
 669         g_debug("GisPluginRadar: plugin_init");
 670         /* Add methods to the interface */
 671         iface->get_config = gis_plugin_radar_get_config;
 672 }
 673 /* Class/Object init */
 674 static void gis_plugin_radar_init(GisPluginRadar *self)
 675 {
 676         g_debug("GisPluginRadar: class_init");
 677         /* Set defaults */
 678         self->http = gis_http_new("/nexrad/level2/");
 679         self->config_body = gtk_alignment_new(0, 0, 1, 1);
 680         gtk_container_set_border_width(GTK_CONTAINER(self->config_body), 5);
 681         gtk_container_add(GTK_CONTAINER(self->config_body), gtk_label_new("No radar loaded"));
 682 }
 683 static void gis_plugin_radar_dispose(GObject *gobject)
 684 {
 685         g_debug("GisPluginRadar: dispose");
 686         GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject);
 687         g_signal_handler_disconnect(self->viewer, self->time_changed_id);
 688         /* Drop references */
 689         G_OBJECT_CLASS(gis_plugin_radar_parent_class)->dispose(gobject);
 690 }
 691 static void gis_plugin_radar_finalize(GObject *gobject)
 692 {
 693         g_debug("GisPluginRadar: finalize");
 694         GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject);
 695         /* Free data */
 696         gis_http_free(self->http);
 697         G_OBJECT_CLASS(gis_plugin_radar_parent_class)->finalize(gobject);
 698
 699 }
 700 static void gis_plugin_radar_class_init(GisPluginRadarClass *klass)
 701 {
 702         g_debug("GisPluginRadar: class_init");
 703         GObjectClass *gobject_class = (GObjectClass*)klass;
 704         gobject_class->dispose  = gis_plugin_radar_dispose;
 705         gobject_class->finalize = gis_plugin_radar_finalize;
 706 }
 707