2 * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
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.
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.
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/>.
20 #include <gtk/gtkgl.h>
26 #include "aweather-gui.h"
27 #include "plugin-radar.h"
34 static void aweather_radar_plugin_init(AWeatherPluginInterface *iface);
35 static void _aweather_radar_expose(AWeatherPlugin *_radar);
36 G_DEFINE_TYPE_WITH_CODE(AWeatherRadar, aweather_radar, G_TYPE_OBJECT,
37 G_IMPLEMENT_INTERFACE(AWEATHER_TYPE_PLUGIN,
38 aweather_radar_plugin_init));
39 static void aweather_radar_plugin_init(AWeatherPluginInterface *iface)
41 g_debug("AWeatherRadar: plugin_init");
42 /* Add methods to the interface */
43 iface->expose = _aweather_radar_expose;
45 /* Class/Object init */
46 static void aweather_radar_init(AWeatherRadar *radar)
48 g_debug("AWeatherRadar: class_init");
52 static void aweather_radar_dispose(GObject *gobject)
54 g_debug("AWeatherRadar: dispose");
55 AWeatherRadar *self = AWEATHER_RADAR(gobject);
57 G_OBJECT_CLASS(aweather_radar_parent_class)->dispose(gobject);
59 static void aweather_radar_finalize(GObject *gobject)
61 g_debug("AWeatherRadar: finalize");
62 AWeatherRadar *self = AWEATHER_RADAR(gobject);
64 G_OBJECT_CLASS(aweather_radar_parent_class)->finalize(gobject);
67 static void aweather_radar_class_init(AWeatherRadarClass *klass)
69 g_debug("AWeatherRadar: class_init");
70 GObjectClass *gobject_class = (GObjectClass*)klass;
71 gobject_class->dispose = aweather_radar_dispose;
72 gobject_class->finalize = aweather_radar_finalize;
75 /**************************
76 * Data loading functions *
77 **************************/
78 /* Convert a sweep to an 2d array of data points */
79 static void bscan_sweep(AWeatherRadar *self, Sweep *sweep, colormap_t *colormap,
80 guint8 **data, int *width, int *height)
82 /* Calculate max number of bins */
84 for (i = 0; i < sweep->h.nrays; i++)
85 max_bins = MAX(max_bins, sweep->ray[i]->h.nbins);
87 /* Allocate buffer using max number of bins for each ray */
88 guint8 *buf = g_malloc0(sweep->h.nrays * max_bins * 4);
92 for (ri = 0; ri < sweep->h.nrays; ri++) {
93 Ray *ray = sweep->ray[ri];
94 for (bi = 0; bi < ray->h.nbins; bi++) {
95 /* copy RGBA into buffer */
96 //guint val = dz_f(ray->range[bi]);
97 guint8 val = (guint8)ray->h.f(ray->range[bi]);
98 guint buf_i = (ri*max_bins+bi)*4;
99 buf[buf_i+0] = colormap->data[val][0];
100 buf[buf_i+1] = colormap->data[val][1];
101 buf[buf_i+2] = colormap->data[val][2];
102 buf[buf_i+3] = colormap->data[val][3];
103 if (val == BADVAL || val == RFVAL || val == APFLAG ||
104 val == NOTFOUND_H || val == NOTFOUND_V || val == NOECHO) {
105 buf[buf_i+3] = 0x00; // transparent
112 *height = sweep->h.nrays;
116 /* Load a sweep as the active texture */
117 static void load_sweep(AWeatherRadar *self, Sweep *sweep)
119 aweather_gui_gl_begin(self->gui);
120 self->cur_sweep = sweep;
123 bscan_sweep(self, sweep, self->cur_colormap, &data, &width, &height);
124 glDeleteTextures(1, &self->cur_sweep_tex);
125 glGenTextures(1, &self->cur_sweep_tex);
126 glBindTexture(GL_TEXTURE_2D, self->cur_sweep_tex);
127 glPixelStorei(GL_PACK_ALIGNMENT, 1);
128 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
129 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
130 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
131 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0,
132 GL_RGBA, GL_UNSIGNED_BYTE, data);
134 aweather_gui_gl_redraw(self->gui);
135 aweather_gui_gl_end(self->gui);
138 static void load_colormap(AWeatherRadar *self, gchar *table)
140 /* Set colormap so we can draw it on expose */
141 for (int i = 0; colormaps[i].name; i++)
142 if (g_str_equal(colormaps[i].name, table))
143 self->cur_colormap = &colormaps[i];
146 /* Add selectors to the config area for the sweeps */
147 static void on_sweep_clicked(GtkRadioButton *button, gpointer _self);
148 static void load_radar_gui(AWeatherRadar *self, Radar *radar)
150 /* Clear existing items */
151 GtkWidget *child = gtk_bin_get_child(GTK_BIN(self->config_body));
153 gtk_widget_destroy(child);
156 guint rows = 1, cols = 1, cur_cols;
157 gchar row_label_str[64], col_label_str[64], button_str[64];
158 GtkWidget *row_label, *col_label, *button = NULL, *elev_box = NULL;
159 GtkWidget *table = gtk_table_new(rows, cols, FALSE);
161 for (guint vi = 0; vi < radar->h.nvolumes; vi++) {
162 Volume *vol = radar->v[vi];
163 if (vol == NULL) continue;
164 rows++; cols = 1; elev = 0;
167 g_snprintf(row_label_str, 64, "<b>%s:</b>", vol->h.type_str);
168 row_label = gtk_label_new(row_label_str);
169 gtk_label_set_use_markup(GTK_LABEL(row_label), TRUE);
170 gtk_misc_set_alignment(GTK_MISC(row_label), 1, 0.5);
171 gtk_table_attach(GTK_TABLE(table), row_label,
172 0,1, rows-1,rows, GTK_FILL,GTK_FILL, 5,0);
174 for (guint si = 0; si < vol->h.nsweeps; si++) {
175 Sweep *sweep = vol->sweep[si];
176 if (sweep == NULL || sweep->h.elev == 0) continue;
177 if (sweep->h.elev != elev) {
179 elev = sweep->h.elev;
182 g_object_get(table, "n-columns", &cur_cols, NULL);
183 if (cols > cur_cols) {
184 g_snprintf(col_label_str, 64, "<b>%.2f°</b>", elev);
185 col_label = gtk_label_new(col_label_str);
186 gtk_label_set_use_markup(GTK_LABEL(col_label), TRUE);
187 gtk_widget_set_size_request(col_label, 40, -1);
188 gtk_table_attach(GTK_TABLE(table), col_label,
189 cols-1,cols, 0,1, GTK_FILL,GTK_FILL, 0,0);
192 elev_box = gtk_hbox_new(TRUE, 0);
193 gtk_table_attach(GTK_TABLE(table), elev_box,
194 cols-1,cols, rows-1,rows, GTK_FILL,GTK_FILL, 0,0);
199 g_snprintf(button_str, 64, "%3.2f", elev);
200 button = gtk_radio_button_new_with_label_from_widget(
201 GTK_RADIO_BUTTON(button), button_str);
202 gtk_widget_set_size_request(button, -1, 26);
203 //button = gtk_radio_button_new_from_widget(GTK_RADIO_BUTTON(button));
204 //gtk_widget_set_size_request(button, -1, 22);
205 g_object_set(button, "draw-indicator", FALSE, NULL);
206 gtk_box_pack_end(GTK_BOX(elev_box), button, TRUE, TRUE, 0);
208 g_object_set_data(G_OBJECT(button), "type", vol->h.type_str);
209 g_object_set_data(G_OBJECT(button), "sweep", sweep);
210 g_signal_connect(button, "clicked", G_CALLBACK(on_sweep_clicked), self);
213 gtk_container_add(GTK_CONTAINER(self->config_body), table);
214 gtk_widget_show_all(table);
217 /* Load a radar from a decompressed file */
218 static void load_radar(AWeatherRadar *self, gchar *radar_file)
220 char *dir = g_path_get_dirname(radar_file);
221 char *site = g_path_get_basename(dir);
223 g_debug("AWeatherRadar: load_radar - Loading new radar");
224 RSL_read_these_sweeps("all", NULL);
225 Radar *radar = self->cur_radar = RSL_wsr88d_to_radar(radar_file, site);
227 g_warning("fail to load radar: path=%s, site=%s", radar_file, site);
233 /* Load the first sweep by default */
234 if (radar->h.nvolumes < 1 || radar->v[0]->h.nsweeps < 1) {
235 g_warning("No sweeps found\n");
237 /* load first available sweep */
238 for (int vi = 0; vi < radar->h.nvolumes; vi++) {
239 if (radar->v[vi]== NULL) continue;
240 for (int si = 0; si < radar->v[vi]->h.nsweeps; si++) {
241 if (radar->v[vi]->sweep[si]== NULL) continue;
242 load_colormap(self, radar->v[vi]->h.type_str);
243 load_sweep(self, radar->v[vi]->sweep[si]);
250 load_radar_gui(self, radar);
253 static void update_times(AWeatherRadar *self, char *site, char **last_time)
255 char *list_uri = g_strdup_printf(
256 "http://mesonet.agron.iastate.edu/data/nexrd2/raw/K%s/dir.list",
258 GFile *list = g_file_new_for_uri(list_uri);
263 GError *error = NULL;
264 g_file_load_contents(list, NULL, &data, &length, NULL, &error);
265 g_object_unref(list);
267 g_warning("Error loading list for %s: %s", site, error->message);
271 gchar **lines = g_strsplit(data, "\n", -1);
272 GtkTreeView *tview = GTK_TREE_VIEW(aweather_gui_get_widget(self->gui, "time"));
273 GtkListStore *lstore = GTK_LIST_STORE(gtk_tree_view_get_model(tview));
274 gtk_list_store_clear(lstore);
276 for (int i = 0; lines[i] && lines[i][0]; i++) {
277 // format: `841907 KABR_20090510_0159'
278 //g_message("\tadding %p [%s]", lines[i], lines[i]);
279 char **parts = g_strsplit(lines[i], " ", 2);
280 char *time = parts[1]+5;
281 gtk_list_store_insert(lstore, &iter, 0);
282 gtk_list_store_set(lstore, &iter, 0, time, -1);
287 gtk_tree_model_get(GTK_TREE_MODEL(lstore), &iter, 0, last_time, -1);
301 static void decompressed_cb(GPid pid, gint status, gpointer _udata)
303 decompressed_t *udata = _udata;
305 g_warning("wsr88ddec exited with status %d", status);
308 load_radar(udata->self, udata->radar_file);
309 g_spawn_close_pid(pid);
310 g_free(udata->radar_file);
314 static void cached_cb(char *path, gboolean updated, gpointer _self)
316 AWeatherRadar *self = AWEATHER_RADAR(_self);
317 char *decompressed = g_strconcat(path, ".raw", NULL);
319 load_radar(self, decompressed);
323 decompressed_t *udata = g_malloc(sizeof(decompressed_t));
325 udata->radar_file = decompressed;
326 g_debug("AWeatherRadar: cached_cb - File updated, decompressing..");
327 char *argv[] = {"wsr88ddec", path, decompressed, NULL};
329 GError *error = NULL;
331 NULL, // const gchar *working_directory,
332 argv, // gchar **argv,
333 NULL, // gchar **envp,
335 G_SPAWN_DO_NOT_REAP_CHILD,
336 // GSpawnFlags flags,
337 NULL, // GSpawnChildSetupFunc child_setup,
338 NULL, // gpointer user_data,
339 &pid, // GPid *child_pid,
340 &error); // GError **error
342 g_warning("failed to decompress WSR88D data: %s",
346 g_child_watch_add(pid, decompressed_cb, udata);
352 static void on_sweep_clicked(GtkRadioButton *button, gpointer _self)
354 AWeatherRadar *self = AWEATHER_RADAR(_self);
355 load_colormap(self, g_object_get_data(G_OBJECT(button), "type" ));
356 load_sweep (self, g_object_get_data(G_OBJECT(button), "sweep"));
359 static void on_time_changed(AWeatherView *view, char *time, gpointer _self)
361 AWeatherRadar *self = AWEATHER_RADAR(_self);
362 g_debug("AWeatherRadar: on_time_changed - setting time");
363 // format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323
364 char *site = aweather_view_get_site(view);
365 char *base = "http://mesonet.agron.iastate.edu/data/";
366 char *path = g_strdup_printf("nexrd2/raw/K%s/K%s_%s", site, site, time);
368 /* Clear out children */
369 GtkWidget *child = gtk_bin_get_child(GTK_BIN(self->config_body));
371 gtk_widget_destroy(child);
372 gtk_container_add(GTK_CONTAINER(self->config_body),
373 gtk_label_new("Loading radar..."));
374 gtk_widget_show_all(self->config_body);
376 RSL_free_radar(self->cur_radar);
377 self->cur_radar = NULL;
378 self->cur_sweep = NULL;
379 aweather_gui_gl_redraw(self->gui);
381 /* Start loading the new radar */
382 cache_file(base, path, AWEATHER_AUTOMATIC, cached_cb, self);
386 static void on_site_changed(AWeatherView *view, char *site, gpointer _self)
388 AWeatherRadar *self = AWEATHER_RADAR(_self);
389 g_debug("AWeatherRadar: on_site_changed - Loading wsr88d list for %s", site);
391 update_times(self, site, &time);
392 aweather_view_set_time(view, time);
397 static void on_refresh(AWeatherView *view, gpointer _self)
399 AWeatherRadar *self = AWEATHER_RADAR(_self);
400 char *site = aweather_view_get_site(view);
402 update_times(self, site, &time);
403 aweather_view_set_time(view, time);
410 AWeatherRadar *aweather_radar_new(AWeatherGui *gui)
412 g_debug("AWeatherRadar: new");
413 AWeatherRadar *self = g_object_new(AWEATHER_TYPE_RADAR, NULL);
416 GtkWidget *config = aweather_gui_get_widget(gui, "tabs");
417 AWeatherView *view = aweather_gui_get_view(gui);
419 /* Add configuration tab */
420 self->config_body = gtk_alignment_new(0, 0, 1, 1);
421 gtk_container_set_border_width(GTK_CONTAINER(self->config_body), 5);
422 gtk_container_add(GTK_CONTAINER(self->config_body), gtk_label_new("No radar loaded"));
423 gtk_notebook_prepend_page(GTK_NOTEBOOK(config), self->config_body, gtk_label_new("Radar"));
425 /* Set up OpenGL Stuff */
426 g_signal_connect(view, "site-changed", G_CALLBACK(on_site_changed), self);
427 g_signal_connect(view, "time-changed", G_CALLBACK(on_time_changed), self);
428 g_signal_connect(view, "refresh", G_CALLBACK(on_refresh), self);
433 static void _aweather_radar_expose(AWeatherPlugin *_self)
435 AWeatherRadar *self = AWEATHER_RADAR(_self);
436 g_debug("AWeatherRadar: expose");
437 if (self->cur_sweep == NULL)
439 Sweep *sweep = self->cur_sweep;
443 glMatrixMode(GL_MODELVIEW);
445 glBindTexture(GL_TEXTURE_2D, self->cur_sweep_tex);
446 glEnable(GL_TEXTURE_2D);
447 glDisable(GL_ALPHA_TEST);
449 glBegin(GL_QUAD_STRIP);
450 for (int ri = 0; ri <= sweep->h.nrays; ri++) {
453 if (ri < sweep->h.nrays) {
454 ray = sweep->ray[ri];
455 angle = ((ray->h.azimuth - ((double)ray->h.beam_width/2.))*M_PI)/180.0;
457 /* Do the right side of the last sweep */
458 ray = sweep->ray[ri-1];
459 angle = ((ray->h.azimuth + ((double)ray->h.beam_width/2.))*M_PI)/180.0;
462 double lx = sin(angle);
463 double ly = cos(angle);
465 double near_dist = ray->h.range_bin1;
466 double far_dist = ray->h.nbins*ray->h.gate_size + ray->h.range_bin1;
468 /* (find middle of bin) / scale for opengl */
470 glTexCoord2f(0.0, (double)ri/sweep->h.nrays-0.01);
471 glVertex3f(lx*near_dist, ly*near_dist, 2.0);
474 glTexCoord2f(1.0, (double)ri/sweep->h.nrays-0.01);
475 glVertex3f(lx*far_dist, ly*far_dist, 2.0);
477 //g_print("ri=%d, nr=%d, bw=%f\n", _ri, sweep->h.nrays, sweep->h.beam_width);
483 //glTexCoord2d( 0., 0.); glVertex3f(-500., 0., 0.); // bot left
484 //glTexCoord2d( 0., 1.); glVertex3f(-500., 500., 0.); // top left
485 //glTexCoord2d( 1., 1.); glVertex3f( 0., 500., 3.); // top right
486 //glTexCoord2d( 1., 0.); glVertex3f( 0., 0., 3.); // bot right
489 /* Print the color table */
490 glDisable(GL_TEXTURE_2D);
491 glDisable(GL_DEPTH_TEST);
492 glMatrixMode(GL_MODELVIEW ); glPushMatrix(); glLoadIdentity();
493 glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity();
496 for (i = 0; i < 256; i++) {
497 glColor4ub(self->cur_colormap->data[i][0],
498 self->cur_colormap->data[i][1],
499 self->cur_colormap->data[i][2],
500 self->cur_colormap->data[i][3]);
501 glVertex3f(-1.0, (float)((i ) - 256/2)/(256/2), 0.0); // bot left
502 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
503 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
504 glVertex3f(-0.9, (float)((i ) - 256/2)/(256/2), 0.0); // bot right
507 glEnable(GL_DEPTH_TEST);
508 glEnable(GL_ALPHA_TEST);
509 glMatrixMode(GL_PROJECTION); glPopMatrix();
510 glMatrixMode(GL_MODELVIEW ); glPopMatrix();