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

   1 /*
   2  * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
   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/gis.h>
  27
  28 #include "radar.h"
  29 #include "marching.h"
  30
  31
  32 /**************************
  33  * Data loading functions *
  34  **************************/
  35 /* Convert a sweep to an 2d array of data points */
  36 static void _bscan_sweep(GisPluginRadar *self, Sweep *sweep, colormap_t *colormap,
  37                 guint8 **data, int *width, int *height)
  38 {
  39         /* Calculate max number of bins */
  40         int max_bins = 0;
  41         for (int i = 0; i < sweep->h.nrays; i++)
  42                 max_bins = MAX(max_bins, sweep->ray[i]->h.nbins);
  43
  44         /* Allocate buffer using max number of bins for each ray */
  45         guint8 *buf = g_malloc0(sweep->h.nrays * max_bins * 4);
  46
  47         /* Fill the data */
  48         for (int ri = 0; ri < sweep->h.nrays; ri++) {
  49                 Ray *ray  = sweep->ray[ri];
  50                 for (int bi = 0; bi < ray->h.nbins; bi++) {
  51                         /* copy RGBA into buffer */
  52                         //guint val   = dz_f(ray->range[bi]);
  53                         guint8 val   = (guint8)ray->h.f(ray->range[bi]);
  54                         guint  buf_i = (ri*max_bins+bi)*4;
  55                         buf[buf_i+0] = colormap->data[val][0];
  56                         buf[buf_i+1] = colormap->data[val][1];
  57                         buf[buf_i+2] = colormap->data[val][2];
  58                         buf[buf_i+3] = colormap->data[val][3]; // TESTING
  59                         if (val == BADVAL     || val == RFVAL      || val == APFLAG ||
  60                             val == NOTFOUND_H || val == NOTFOUND_V || val == NOECHO) {
  61                                 buf[buf_i+3] = 0x00; // transparent
  62                         }
  63                 }
  64         }
  65
  66         /* set output */
  67         *width  = max_bins;
  68         *height = sweep->h.nrays;
  69         *data   = buf;
  70 }
  71
  72 /* Load a sweep as the active texture */
  73 static void _load_sweep(GisPluginRadar *self, Sweep *sweep)
  74 {
  75         GisViewer *viewer = self->viewer;
  76         gis_viewer_begin(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         gis_viewer_end(viewer);
  93 }
  94
  95 static void _load_colormap(GisPluginRadar *self, gchar *table)
  96 {
  97         /* Set colormap so we can draw it on expose */
  98         for (int i = 0; colormaps[i].name; i++)
  99                 if (g_str_equal(colormaps[i].name, table))
 100                         self->cur_colormap = &colormaps[i];
 101 }
 102
 103 /* Add selectors to the config area for the sweeps */
 104 static void _on_sweep_clicked(GtkRadioButton *button, gpointer _self);
 105 static void _load_radar_gui(GisPluginRadar *self, Radar *radar)
 106 {
 107         /* Clear existing items */
 108         GtkWidget *child = gtk_bin_get_child(GTK_BIN(self->config_body));
 109         if (child)
 110                 gtk_widget_destroy(child);
 111
 112         gdouble elev;
 113         guint rows = 1, cols = 1, cur_cols;
 114         gchar row_label_str[64], col_label_str[64], button_str[64];
 115         GtkWidget *row_label, *col_label, *button = NULL, *elev_box = NULL;
 116         GtkWidget *table = gtk_table_new(rows, cols, FALSE);
 117
 118         for (guint vi = 0; vi < radar->h.nvolumes; vi++) {
 119                 Volume *vol = radar->v[vi];
 120                 if (vol == NULL) continue;
 121                 rows++; cols = 1; elev = 0;
 122
 123                 /* Row label */
 124                 g_snprintf(row_label_str, 64, "<b>%s:</b>", vol->h.type_str);
 125                 row_label = gtk_label_new(row_label_str);
 126                 gtk_label_set_use_markup(GTK_LABEL(row_label), TRUE);
 127                 gtk_misc_set_alignment(GTK_MISC(row_label), 1, 0.5);
 128                 gtk_table_attach(GTK_TABLE(table), row_label,
 129                                 0,1, rows-1,rows, GTK_FILL,GTK_FILL, 5,0);
 130
 131                 for (guint si = 0; si < vol->h.nsweeps; si++) {
 132                         Sweep *sweep = vol->sweep[si];
 133                         if (sweep == NULL || sweep->h.elev == 0) continue;
 134                         if (sweep->h.elev != elev) {
 135                                 cols++;
 136                                 elev = sweep->h.elev;
 137
 138                                 /* Column label */
 139                                 g_object_get(table, "n-columns", &cur_cols, NULL);
 140                                 if (cols >  cur_cols) {
 141                                         g_snprintf(col_label_str, 64, "<b>%.2f°</b>", elev);
 142                                         col_label = gtk_label_new(col_label_str);
 143                                         gtk_label_set_use_markup(GTK_LABEL(col_label), TRUE);
 144                                         gtk_widget_set_size_request(col_label, 50, -1);
 145                                         gtk_table_attach(GTK_TABLE(table), col_label,
 146                                                         cols-1,cols, 0,1, GTK_FILL,GTK_FILL, 0,0);
 147                                 }
 148
 149                                 elev_box = gtk_hbox_new(TRUE, 0);
 150                                 gtk_table_attach(GTK_TABLE(table), elev_box,
 151                                                 cols-1,cols, rows-1,rows, GTK_FILL,GTK_FILL, 0,0);
 152                         }
 153
 154
 155                         /* Button */
 156                         g_snprintf(button_str, 64, "%3.2f", elev);
 157                         button = gtk_radio_button_new_with_label_from_widget(
 158                                         GTK_RADIO_BUTTON(button), button_str);
 159                         gtk_widget_set_size_request(button, -1, 26);
 160                         //button = gtk_radio_button_new_from_widget(GTK_RADIO_BUTTON(button));
 161                         //gtk_widget_set_size_request(button, -1, 22);
 162                         g_object_set(button, "draw-indicator", FALSE, NULL);
 163                         gtk_box_pack_end(GTK_BOX(elev_box), button, TRUE, TRUE, 0);
 164
 165                         g_object_set_data(G_OBJECT(button), "type",  vol->h.type_str);
 166                         g_object_set_data(G_OBJECT(button), "sweep", sweep);
 167                         g_signal_connect(button, "clicked", G_CALLBACK(_on_sweep_clicked), self);
 168                 }
 169         }
 170         gtk_container_add(GTK_CONTAINER(self->config_body), table);
 171         gtk_widget_show_all(table);
 172 }
 173
 174 static void _gis_plugin_radar_grid_set(GRIDCELL *grid, int gi, Ray *ray, int bi)
 175 {
 176         Range range = ray->range[bi];
 177
 178         double angle = deg2rad(ray->h.azimuth);
 179         double tilt  = deg2rad(ray->h.elev);
 180
 181         double lx    = sin(angle);
 182         double ly    = cos(angle);
 183         double lz    = sin(tilt);
 184
 185         double dist   = bi*ray->h.gate_size + ray->h.range_bin1;
 186
 187         grid->p[gi].x = lx*dist;
 188         grid->p[gi].y = ly*dist;
 189         grid->p[gi].z = lz*dist;
 190
 191         guint8 val = (guint8)ray->h.f(ray->range[bi]);
 192         if (val == BADVAL     || val == RFVAL      || val == APFLAG ||
 193             val == NOTFOUND_H || val == NOTFOUND_V || val == NOECHO ||
 194             val > 80)
 195                 val = 0;
 196         grid->val[gi] = (float)val;
 197         //g_debug("(%.2f,%.2f,%.2f) - (%.0f,%.0f,%.0f) = %d",
 198         //      angle, tilt, dist,
 199         //      grid->p[gi].x,
 200         //      grid->p[gi].y,
 201         //      grid->p[gi].z,
 202         //      val);
 203 }
 204
 205 /* Load a radar from a decompressed file */
 206 static void _load_radar(GisPluginRadar *self, gchar *radar_file)
 207 {
 208         char *dir  = g_path_get_dirname(radar_file);
 209         char *site = g_path_get_basename(dir);
 210         g_free(dir);
 211         g_debug("GisPluginRadar: load_radar - Loading new radar");
 212         RSL_read_these_sweeps("all", NULL);
 213         Radar *radar = self->cur_radar = RSL_wsr88d_to_radar(radar_file, site);
 214         if (radar == NULL) {
 215                 g_warning("fail to load radar: path=%s, site=%s", radar_file, site);
 216                 g_free(site);
 217                 return;
 218         }
 219         g_free(site);
 220
 221 #ifdef MARCHING
 222         /* Load the surface */
 223         if (self->cur_triangles) {
 224                 g_free(self->cur_triangles);
 225                 self->cur_triangles = NULL;
 226         }
 227         self->cur_num_triangles = 0;
 228         int x = 1;
 229         for (guint vi = 0; vi < radar->h.nvolumes; vi++) {
 230                 if (radar->v[vi] == NULL) continue;
 231
 232                 for (guint si = 0; si+1 < radar->v[vi]->h.nsweeps; si++) {
 233                         Sweep *sweep0 = radar->v[vi]->sweep[si+0];
 234                         Sweep *sweep1 = radar->v[vi]->sweep[si+1];
 235
 236                         //g_debug("GisPluginRadar: load_radar: sweep[%3d-%3d] -- nrays = %d, %d",
 237                         //      si, si+1,sweep0->h.nrays, sweep1->h.nrays);
 238
 239                         /* Skip super->regular resolution switch for now */
 240                         if (sweep0 == NULL || sweep0->h.elev == 0 ||
 241                             sweep1 == NULL || sweep1->h.elev == 0 ||
 242                             sweep0->h.nrays != sweep1->h.nrays)
 243                                 continue;
 244
 245                         /* We repack the arrays so that raysX[0] is always north, etc */
 246                         Ray **rays0 = g_malloc0(sizeof(Ray*)*sweep0->h.nrays);
 247                         Ray **rays1 = g_malloc0(sizeof(Ray*)*sweep1->h.nrays);
 248
 249                         for (guint ri = 0; ri < sweep0->h.nrays; ri++)
 250                                 rays0[(guint)(sweep0->ray[ri]->h.azimuth * sweep0->h.nrays / 360)] =
 251                                         sweep0->ray[ri];
 252                         for (guint ri = 0; ri < sweep1->h.nrays; ri++)
 253                                 rays1[(guint)(sweep1->ray[ri]->h.azimuth * sweep1->h.nrays / 360)] =
 254                                         sweep1->ray[ri];
 255
 256                         for (guint ri = 0; ri+x < sweep0->h.nrays; ri+=x) {
 257                                 //g_debug("GisPluginRadar: load_radar - ray[%3d-%3d] -- nbins = %d, %d, %d, %d",
 258                                 //      ri, ri+x,
 259                                 //      rays0[ri  ]->h.nbins,
 260                                 //      rays0[ri+1]->h.nbins,
 261                                 //      rays1[ri  ]->h.nbins,
 262                                 //      rays1[ri+1]->h.nbins);
 263
 264                                 for (guint bi = 0; bi+x < rays1[ri]->h.nbins; bi+=x) {
 265                                         GRIDCELL grid = {};
 266                                         _gis_plugin_radar_grid_set(&grid, 7, rays0[(ri  )%sweep0->h.nrays], bi+x);
 267                                         _gis_plugin_radar_grid_set(&grid, 6, rays0[(ri+x)%sweep0->h.nrays], bi+x);
 268                                         _gis_plugin_radar_grid_set(&grid, 5, rays0[(ri+x)%sweep0->h.nrays], bi  );
 269                                         _gis_plugin_radar_grid_set(&grid, 4, rays0[(ri  )%sweep0->h.nrays], bi  );
 270                                         _gis_plugin_radar_grid_set(&grid, 3, rays1[(ri  )%sweep0->h.nrays], bi+x);
 271                                         _gis_plugin_radar_grid_set(&grid, 2, rays1[(ri+x)%sweep0->h.nrays], bi+x);
 272                                         _gis_plugin_radar_grid_set(&grid, 1, rays1[(ri+x)%sweep0->h.nrays], bi  );
 273                                         _gis_plugin_radar_grid_set(&grid, 0, rays1[(ri  )%sweep0->h.nrays], bi  );
 274
 275                                         TRIANGLE tris[10];
 276                                         int n = march_one_cube(grid, 40, tris);
 277
 278                                         self->cur_triangles = g_realloc(self->cur_triangles,
 279                                                 (self->cur_num_triangles+n)*sizeof(TRIANGLE));
 280                                         for (int i = 0; i < n; i++) {
 281                                                 //g_debug("triangle: ");
 282                                                 //g_debug("\t(%f,%f,%f)", tris[i].p[0].x, tris[i].p[0].y, tris[i].p[0].z);
 283                                                 //g_debug("\t(%f,%f,%f)", tris[i].p[1].x, tris[i].p[1].y, tris[i].p[1].z);
 284                                                 //g_debug("\t(%f,%f,%f)", tris[i].p[2].x, tris[i].p[2].y, tris[i].p[2].z);
 285                                                 self->cur_triangles[self->cur_num_triangles+i] = tris[i];
 286                                         }
 287                                         self->cur_num_triangles += n;
 288                                         //g_debug(" ");
 289                                 }
 290                         }
 291                 }
 292                 break; // Exit after first volume (reflectivity)
 293         }
 294 #endif
 295
 296         /* Load the first sweep by default */
 297         if (radar->h.nvolumes < 1 || radar->v[0]->h.nsweeps < 1) {
 298                 g_warning("No sweeps found\n");
 299         } else {
 300                 /* load first available sweep */
 301                 for (int vi = 0; vi < radar->h.nvolumes; vi++) {
 302                         if (radar->v[vi]== NULL) continue;
 303                         for (int si = 0; si < radar->v[vi]->h.nsweeps; si++) {
 304                                 if (radar->v[vi]->sweep[si]== NULL) continue;
 305                                 _load_colormap(self, radar->v[vi]->h.type_str);
 306                                 _load_sweep(self, radar->v[vi]->sweep[si]);
 307                                 break;
 308                         }
 309                         break;
 310                 }
 311         }
 312
 313         _load_radar_gui(self, radar);
 314 }
 315
 316
 317 /*****************
 318  * ASync helpers *
 319  *****************/
 320 typedef struct {
 321         GisPluginRadar *self;
 322         gchar *radar_file;
 323 } decompressed_t;
 324
 325 static void _decompressed_cb(GPid pid, gint status, gpointer _udata)
 326 {
 327         g_debug("GisPluginRadar: decompressed_cb");
 328         decompressed_t *udata = _udata;
 329         if (status != 0) {
 330                 g_warning("wsr88ddec exited with status %d", status);
 331                 return;
 332         }
 333         _load_radar(udata->self, udata->radar_file);
 334         g_spawn_close_pid(pid);
 335         g_free(udata->radar_file);
 336         g_free(udata);
 337 }
 338
 339 static void _cache_chunk_cb(char *path, goffset cur, goffset total, gpointer _self)
 340 {
 341         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 342         double percent = (double)cur/total;
 343
 344         //g_debug("GisPluginRadar: cache_chunk_cb - %lld/%lld = %.2f%%",
 345         //              cur, total, percent*100);
 346
 347         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(self->progress_bar), MIN(percent, 1.0));
 348
 349         gchar *msg = g_strdup_printf("Loading radar... %5.1f%% (%.2f/%.2f MB)",
 350                         percent*100, (double)cur/1000000, (double)total/1000000);
 351         gtk_label_set_text(GTK_LABEL(self->progress_label), msg);
 352         g_free(msg);
 353 }
 354
 355 static void _cache_done_cb(char *path, gboolean updated, gpointer _self)
 356 {
 357         g_debug("GisPluginRadar: cache_done_cb - updated = %d", updated);
 358         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 359         char *decompressed = g_strconcat(path, ".raw", NULL);
 360         if (!updated && g_file_test(decompressed, G_FILE_TEST_EXISTS)) {
 361                 _load_radar(self, decompressed);
 362                 return;
 363         }
 364
 365         decompressed_t *udata = g_malloc(sizeof(decompressed_t));
 366         udata->self       = self;
 367         udata->radar_file = decompressed;
 368         g_debug("GisPluginRadar: cache_done_cb - File updated, decompressing..");
 369         char *argv[] = {"wsr88ddec", path, decompressed, NULL};
 370         GPid pid;
 371         GError *error = NULL;
 372         g_spawn_async(
 373                 NULL,    // const gchar *working_directory,
 374                 argv,    // gchar **argv,
 375                 NULL,    // gchar **envp,
 376                 G_SPAWN_SEARCH_PATH|
 377                 G_SPAWN_DO_NOT_REAP_CHILD,
 378                          // GSpawnFlags flags,
 379                 NULL,    // GSpawnChildSetupFunc child_setup,
 380                 NULL,    // gpointer user_data,
 381                 &pid,    // GPid *child_pid,
 382                 &error); // GError **error
 383         if (error) {
 384                 gchar *message = g_strdup_printf("Unable to decompress WSR88D data: %s",
 385                                 error->message);
 386                 g_warning("%s", message);
 387                 GtkWidget *child = gtk_bin_get_child(GTK_BIN(self->config_body));
 388                 if (child)
 389                         gtk_widget_destroy(child);
 390                 gtk_container_add(GTK_CONTAINER(self->config_body), gtk_label_new(message));
 391                 gtk_widget_show_all(self->config_body);
 392                 g_error_free(error);
 393                 g_free(message);
 394         }
 395         g_child_watch_add(pid, _decompressed_cb, udata);
 396         self->soup = NULL;
 397 }
 398
 399
 400 /*************
 401  * Callbacks *
 402  *************/
 403 static void _on_sweep_clicked(GtkRadioButton *button, gpointer _self)
 404 {
 405         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 406         _load_colormap(self, g_object_get_data(G_OBJECT(button), "type" ));
 407         _load_sweep   (self, g_object_get_data(G_OBJECT(button), "sweep"));
 408 }
 409
 410 static void _on_time_changed(GisViewer *viewer, const char *time, gpointer _self)
 411 {
 412         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 413         g_debug("GisPluginRadar: on_time_changed - setting time=%s", time);
 414         // format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323
 415         char *site = gis_viewer_get_site(viewer);
 416         char *path = g_strdup_printf("nexrd2/raw/%s/%s_%s", site, site, time);
 417
 418         /* Set up progress bar */
 419         GtkWidget *child = gtk_bin_get_child(GTK_BIN(self->config_body));
 420         if (child) gtk_widget_destroy(child);
 421
 422         GtkWidget *vbox = gtk_vbox_new(FALSE, 10);
 423         gtk_container_set_border_width(GTK_CONTAINER(vbox), 10);
 424         self->progress_bar   = gtk_progress_bar_new();
 425         self->progress_label = gtk_label_new("Loading radar...");
 426         gtk_box_pack_start(GTK_BOX(vbox), self->progress_bar,   FALSE, FALSE, 0);
 427         gtk_box_pack_start(GTK_BOX(vbox), self->progress_label, FALSE, FALSE, 0);
 428         gtk_container_add(GTK_CONTAINER(self->config_body), vbox);
 429         gtk_widget_show_all(self->config_body);
 430
 431         /* Clear radar */
 432         if (self->cur_radar)
 433                 RSL_free_radar(self->cur_radar);
 434         self->cur_radar = NULL;
 435         self->cur_sweep = NULL;
 436         gtk_widget_queue_draw(GTK_WIDGET(self->viewer));
 437
 438         /* Start loading the new radar */
 439         if (self->soup) {
 440                 soup_session_abort(self->soup);
 441                 self->soup = NULL;
 442         }
 443         gchar *base = gis_prefs_get_string(self->prefs, "aweather/nexrad_url", NULL);
 444         if (gis_viewer_get_offline(self->viewer))
 445                 self->soup = cache_file(base, path, GIS_ONCE,
 446                                 _cache_chunk_cb, _cache_done_cb, self);
 447         else
 448                 self->soup = cache_file(base, path, GIS_UPDATE,
 449                                 _cache_chunk_cb, _cache_done_cb, self);
 450         g_free(path);
 451 }
 452
 453
 454 /***********
 455  * Methods *
 456  ***********/
 457 GisPluginRadar *gis_plugin_radar_new(GisViewer *viewer, GisPrefs *prefs)
 458 {
 459         /* TODO: move to constructor if possible */
 460         g_debug("GisPluginRadar: new");
 461         GisPluginRadar *self = g_object_new(GIS_TYPE_PLUGIN_RADAR, NULL);
 462         self->viewer = viewer;
 463         self->prefs  = prefs;
 464         self->time_changed_id = g_signal_connect(viewer, "time-changed",
 465                         G_CALLBACK(_on_time_changed), self);
 466         return self;
 467 }
 468
 469 static GtkWidget *gis_plugin_radar_get_config(GisPlugin *_self)
 470 {
 471         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 472         return self->config_body;
 473 }
 474
 475 static void gis_plugin_radar_expose(GisPlugin *_self)
 476 {
 477         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 478         g_debug("GisPluginRadar: expose");
 479         if (self->cur_sweep == NULL)
 480                 return;
 481         Sweep *sweep = self->cur_sweep;
 482
 483 #ifdef MARCHING
 484         /* Draw the surface */
 485         glMatrixMode(GL_MODELVIEW);
 486         glPushMatrix();
 487         glDisable(GL_TEXTURE_2D);
 488         float light_ambient[]  = {0.1f, 0.1f, 0.0f};
 489         float light_diffuse[]  = {0.9f, 0.9f, 0.9f};
 490         float light_position[] = {-300000.0f, 500000.0f, 400000.0f, 1.0f};
 491         glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
 492         glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
 493         glLightfv(GL_LIGHT0, GL_POSITION, light_position);
 494         glEnable(GL_LIGHT0);
 495         glEnable(GL_LIGHTING);
 496         glEnable(GL_COLOR_MATERIAL);
 497         glColor4f(1,1,1,0.75);
 498         g_debug("ntri=%d", self->cur_num_triangles);
 499         glBegin(GL_TRIANGLES);
 500         for (int i = 0; i < self->cur_num_triangles; i++) {
 501                 TRIANGLE t = self->cur_triangles[i];
 502                 do_normal(t.p[0].x, t.p[0].y, t.p[0].z,
 503                           t.p[1].x, t.p[1].y, t.p[1].z,
 504                           t.p[2].x, t.p[2].y, t.p[2].z);
 505                 glVertex3f(t.p[0].x, t.p[0].y, t.p[0].z);
 506                 glVertex3f(t.p[1].x, t.p[1].y, t.p[1].z);
 507                 glVertex3f(t.p[2].x, t.p[2].y, t.p[2].z);
 508         }
 509         glEnd();
 510         glPopMatrix();
 511 #endif
 512
 513         g_debug("GisPluginRadar: expose - setting camera");
 514         Radar_header *h = &self->cur_radar->h;
 515         gdouble lat  = (double)h->latd + (double)h->latm/60 + (double)h->lats/(60*60);
 516         gdouble lon  = (double)h->lond + (double)h->lonm/60 + (double)h->lons/(60*60);
 517         gdouble elev = h->height;
 518         gis_viewer_center_position(self->viewer, lat, lon, elev);
 519
 520         glDisable(GL_ALPHA_TEST);
 521         glDisable(GL_CULL_FACE);
 522         glDisable(GL_DEPTH_TEST);
 523         glDisable(GL_LIGHTING);
 524         glEnable(GL_TEXTURE_2D);
 525         glColor4f(1,1,1,1);
 526
 527         /* Draw the rays */
 528         glBindTexture(GL_TEXTURE_2D, self->cur_sweep_tex);
 529         glBegin(GL_QUAD_STRIP);
 530         for (int ri = 0; ri <= sweep->h.nrays; ri++) {
 531                 Ray  *ray = NULL;
 532                 double angle = 0;
 533                 if (ri < sweep->h.nrays) {
 534                         ray = sweep->ray[ri];
 535                         angle = deg2rad(ray->h.azimuth - ((double)ray->h.beam_width/2.));
 536                 } else {
 537                         /* Do the right side of the last sweep */
 538                         ray = sweep->ray[ri-1];
 539                         angle = deg2rad(ray->h.azimuth + ((double)ray->h.beam_width/2.));
 540                 }
 541
 542                 double lx = sin(angle);
 543                 double ly = cos(angle);
 544
 545                 double near_dist = ray->h.range_bin1;
 546                 double far_dist  = ray->h.nbins*ray->h.gate_size + ray->h.range_bin1;
 547
 548                 /* (find middle of bin) / scale for opengl */
 549                 // near left
 550                 glTexCoord2f(0.0, (double)ri/sweep->h.nrays-0.01);
 551                 glVertex3f(lx*near_dist, ly*near_dist, 2.0);
 552
 553                 // far  left
 554                 // todo: correct range-height function
 555                 double height = sin(deg2rad(ray->h.elev)) * far_dist;
 556                 glTexCoord2f(1.0, (double)ri/sweep->h.nrays-0.01);
 557                 glVertex3f(lx*far_dist,  ly*far_dist, height);
 558         }
 559         glEnd();
 560         //g_print("ri=%d, nr=%d, bw=%f\n", _ri, sweep->h.nrays, sweep->h.beam_width);
 561
 562         /* Texture debug */
 563         //glBegin(GL_QUADS);
 564         //glTexCoord2d( 0.,  0.); glVertex3f(-500.,   0., 0.); // bot left
 565         //glTexCoord2d( 0.,  1.); glVertex3f(-500., 500., 0.); // top left
 566         //glTexCoord2d( 1.,  1.); glVertex3f( 0.,   500., 3.); // top right
 567         //glTexCoord2d( 1.,  0.); glVertex3f( 0.,     0., 3.); // bot right
 568         //glEnd();
 569
 570         /* Print the color table */
 571         glMatrixMode(GL_MODELVIEW ); glLoadIdentity();
 572         glMatrixMode(GL_PROJECTION); glLoadIdentity();
 573         glDisable(GL_TEXTURE_2D);
 574         glEnable(GL_COLOR_MATERIAL);
 575         glBegin(GL_QUADS);
 576         int i;
 577         for (i = 0; i < 256; i++) {
 578                 glColor4ubv(self->cur_colormap->data[i]);
 579                 glVertex3f(-1.0, (float)((i  ) - 256/2)/(256/2), 0.0); // bot left
 580                 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
 581                 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
 582                 glVertex3f(-0.9, (float)((i  ) - 256/2)/(256/2), 0.0); // bot right
 583         }
 584         glEnd();
 585 }
 586
 587
 588 /****************
 589  * GObject code *
 590  ****************/
 591 /* Plugin init */
 592 static void gis_plugin_radar_plugin_init(GisPluginInterface *iface);
 593 G_DEFINE_TYPE_WITH_CODE(GisPluginRadar, gis_plugin_radar, G_TYPE_OBJECT,
 594                 G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
 595                         gis_plugin_radar_plugin_init));
 596 static void gis_plugin_radar_plugin_init(GisPluginInterface *iface)
 597 {
 598         g_debug("GisPluginRadar: plugin_init");
 599         /* Add methods to the interface */
 600         iface->expose     = gis_plugin_radar_expose;
 601         iface->get_config = gis_plugin_radar_get_config;
 602 }
 603 /* Class/Object init */
 604 static void gis_plugin_radar_init(GisPluginRadar *self)
 605 {
 606         g_debug("GisPluginRadar: class_init");
 607         /* Set defaults */
 608         self->soup          = NULL;
 609         self->cur_triangles = NULL;
 610         self->cur_num_triangles = 0;
 611
 612         self->config_body = gtk_alignment_new(0, 0, 1, 1);
 613         gtk_container_set_border_width(GTK_CONTAINER(self->config_body), 5);
 614         gtk_container_add(GTK_CONTAINER(self->config_body), gtk_label_new("No radar loaded"));
 615 }
 616 static void gis_plugin_radar_dispose(GObject *gobject)
 617 {
 618         g_debug("GisPluginRadar: dispose");
 619         GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject);
 620         g_signal_handler_disconnect(self->viewer, self->time_changed_id);
 621         /* Drop references */
 622         G_OBJECT_CLASS(gis_plugin_radar_parent_class)->dispose(gobject);
 623 }
 624 static void gis_plugin_radar_finalize(GObject *gobject)
 625 {
 626         g_debug("GisPluginRadar: finalize");
 627         GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject);
 628         /* Free data */
 629         G_OBJECT_CLASS(gis_plugin_radar_parent_class)->finalize(gobject);
 630
 631 }
 632 static void gis_plugin_radar_class_init(GisPluginRadarClass *klass)
 633 {
 634         g_debug("GisPluginRadar: class_init");
 635         GObjectClass *gobject_class = (GObjectClass*)klass;
 636         gobject_class->dispose  = gis_plugin_radar_dispose;
 637         gobject_class->finalize = gis_plugin_radar_finalize;
 638 }
 639