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>
25 #include "aweather-gui.h"
26 #include "plugin-radar.h"
32 static void aweather_radar_plugin_init(AWeatherPluginInterface *iface);
33 static void _aweather_radar_expose(AWeatherPlugin *_radar);
34 G_DEFINE_TYPE_WITH_CODE(AWeatherRadar, aweather_radar, G_TYPE_OBJECT,
35 G_IMPLEMENT_INTERFACE(AWEATHER_TYPE_PLUGIN,
36 aweather_radar_plugin_init));
37 static void aweather_radar_class_init(AWeatherRadarClass *klass)
39 GObjectClass *object_class = (GObjectClass*)klass;
41 static void aweather_radar_plugin_init(AWeatherPluginInterface *iface)
43 /* Add methods to the interface */
44 iface->expose = _aweather_radar_expose;
46 static void aweather_radar_init(AWeatherRadar *radar)
52 /**************************
53 * Data loading functions *
54 **************************/
55 /* Convert a sweep to an 2d array of data points */
56 static void bscan_sweep(AWeatherRadar *self, Sweep *sweep, colormap_t *colormap,
57 guint8 **data, int *width, int *height)
59 /* Calculate max number of bins */
61 for (i = 0; i < sweep->h.nrays; i++)
62 max_bins = MAX(max_bins, sweep->ray[i]->h.nbins);
64 /* Allocate buffer using max number of bins for each ray */
65 guint8 *buf = g_malloc0(sweep->h.nrays * max_bins * 4);
69 for (ri = 0; ri < sweep->h.nrays; ri++) {
70 Ray *ray = sweep->ray[ri];
71 for (bi = 0; bi < ray->h.nbins; bi++) {
72 /* copy RGBA into buffer */
73 //guint val = dz_f(ray->range[bi]);
74 guint8 val = (guint8)ray->h.f(ray->range[bi]);
75 guint buf_i = (ri*max_bins+bi)*4;
76 buf[buf_i+0] = colormap->data[val][0];
77 buf[buf_i+1] = colormap->data[val][1];
78 buf[buf_i+2] = colormap->data[val][2];
79 buf[buf_i+3] = colormap->data[val][3];
80 if (val == BADVAL || val == RFVAL || val == APFLAG ||
81 val == NOTFOUND_H || val == NOTFOUND_V || val == NOECHO) {
82 buf[buf_i+3] = 0x00; // transparent
89 *height = sweep->h.nrays;
93 /* Load a sweep as the active texture */
94 static void load_sweep(AWeatherRadar *self, Sweep *sweep)
96 aweather_gui_gl_begin(self->gui);
97 self->cur_sweep = sweep;
100 bscan_sweep(self, sweep, self->cur_colormap, &data, &width, &height);
101 glDeleteTextures(1, &self->cur_sweep_tex);
102 glGenTextures(1, &self->cur_sweep_tex);
103 glBindTexture(GL_TEXTURE_2D, self->cur_sweep_tex);
104 glPixelStorei(GL_PACK_ALIGNMENT, 1);
105 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
106 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
107 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
108 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0,
109 GL_RGBA, GL_UNSIGNED_BYTE, data);
111 aweather_gui_gl_redraw(self->gui);
112 aweather_gui_gl_end(self->gui);
115 static void load_colormap(AWeatherRadar *self, gchar *table)
117 /* Set colormap so we can draw it on expose */
118 for (int i = 0; colormaps[i].name; i++)
119 if (g_str_equal(colormaps[i].name, table))
120 self->cur_colormap = &colormaps[i];
123 /* Add selectors to the config area for the sweeps */
124 static void on_sweep_clicked(GtkRadioButton *button, gpointer _self);
125 static void load_radar_gui(AWeatherRadar *self, Radar *radar)
127 /* Clear existing items */
128 GtkWidget *child = gtk_bin_get_child(GTK_BIN(self->config_body));
130 gtk_widget_destroy(child);
133 guint rows = 1, cols = 1, cur_cols;
134 gchar row_label_str[64], col_label_str[64], button_str[64];
135 GtkWidget *row_label, *col_label, *button = NULL, *elev_box;
136 GtkWidget *table = gtk_table_new(rows, cols, FALSE);
138 for (guint vi = 0; vi < radar->h.nvolumes; vi++) {
139 Volume *vol = radar->v[vi];
140 if (vol == NULL) continue;
141 rows++; cols = 1; elev = 0;
144 g_snprintf(row_label_str, 64, "<b>%s:</b>", vol->h.type_str);
145 row_label = gtk_label_new(row_label_str);
146 gtk_label_set_use_markup(GTK_LABEL(row_label), TRUE);
147 gtk_misc_set_alignment(GTK_MISC(row_label), 1, 0.5);
148 gtk_table_attach(GTK_TABLE(table), row_label,
149 0,1, rows-1,rows, GTK_FILL,GTK_FILL, 5,0);
151 for (guint si = 0; si < vol->h.nsweeps; si++) {
152 Sweep *sweep = vol->sweep[si];
153 if (sweep == NULL || sweep->h.elev == 0) continue;
154 if (sweep->h.elev != elev) {
155 g_message("adding elev");
157 elev = sweep->h.elev;
160 g_object_get(table, "n-columns", &cur_cols, NULL);
161 if (cols > cur_cols) {
162 g_snprintf(col_label_str, 64, "<b>%.2f°</b>", elev);
163 col_label = gtk_label_new(col_label_str);
164 gtk_label_set_use_markup(GTK_LABEL(col_label), TRUE);
165 gtk_widget_set_size_request(col_label, 40, -1);
166 gtk_table_attach(GTK_TABLE(table), col_label,
167 cols-1,cols, 0,1, GTK_FILL,GTK_FILL, 0,0);
170 elev_box = gtk_hbox_new(TRUE, 0);
171 gtk_table_attach(GTK_TABLE(table), elev_box,
172 cols-1,cols, rows-1,rows, GTK_FILL,GTK_FILL, 0,0);
177 g_snprintf(button_str, 64, "%3.2f", elev);
178 button = gtk_radio_button_new_with_label_from_widget(
179 GTK_RADIO_BUTTON(button), button_str);
180 gtk_widget_set_size_request(button, -1, 26);
181 //button = gtk_radio_button_new_from_widget(GTK_RADIO_BUTTON(button));
182 //gtk_widget_set_size_request(button, -1, 22);
183 g_object_set(button, "draw-indicator", FALSE, NULL);
184 gtk_box_pack_end(GTK_BOX(elev_box), button, TRUE, TRUE, 0);
186 g_object_set_data(G_OBJECT(button), "type", vol->h.type_str);
187 g_object_set_data(G_OBJECT(button), "sweep", sweep);
188 g_signal_connect(button, "clicked", G_CALLBACK(on_sweep_clicked), self);
191 gtk_container_add(GTK_CONTAINER(self->config_body), table);
192 gtk_widget_show_all(table);
195 /* Load a radar from a decompressed file */
196 static void load_radar(AWeatherRadar *self, gchar *radar_file)
198 char *dir = g_path_get_dirname(radar_file);
199 char *site = g_path_get_basename(dir);
201 RSL_read_these_sweeps("all", NULL);
202 if (self->cur_radar) {
203 g_message("Freeing radar");
204 RSL_free_radar(self->cur_radar);
206 g_message("Allocating radar");
207 Radar *radar = self->cur_radar = RSL_wsr88d_to_radar(radar_file, site);
209 g_warning("fail to load radar: path=%s, site=%s", radar_file, site);
215 /* Load the first sweep by default */
216 if (radar->h.nvolumes < 1 || radar->v[0]->h.nsweeps < 1) {
217 g_warning("No sweeps found\n");
219 /* load first available sweep */
220 for (int vi = 0; vi < radar->h.nvolumes; vi++) {
221 if (radar->v[vi]== NULL) continue;
222 for (int si = 0; si < radar->v[vi]->h.nsweeps; si++) {
223 if (radar->v[vi]->sweep[si]== NULL) continue;
224 load_colormap(self, radar->v[vi]->h.type_str);
225 load_sweep(self, radar->v[vi]->sweep[si]);
232 load_radar_gui(self, radar);
235 static void update_times(AWeatherRadar *self, char *site, char **last_time)
237 char *list_uri = g_strdup_printf(
238 "http://mesonet.agron.iastate.edu/data/nexrd2/raw/K%s/dir.list",
240 GFile *list = g_file_new_for_uri(list_uri);
245 GError *error = NULL;
246 g_file_load_contents(list, NULL, &data, &length, NULL, &error);
247 g_object_unref(list);
249 g_warning("Error loading list for %s: %s", site, error->message);
253 gchar **lines = g_strsplit(data, "\n", -1);
254 GtkTreeView *tview = GTK_TREE_VIEW(aweather_gui_get_widget(self->gui, "time"));
255 GtkListStore *lstore = GTK_LIST_STORE(gtk_tree_view_get_model(tview));
256 gtk_list_store_clear(lstore);
258 for (int i = 0; lines[i] && lines[i][0]; i++) {
259 // format: `841907 KABR_20090510_0159'
260 //g_message("\tadding %p [%s]", lines[i], lines[i]);
261 char **parts = g_strsplit(lines[i], " ", 2);
262 char *time = parts[1]+5;
263 gtk_list_store_insert(lstore, &iter, 0);
264 gtk_list_store_set(lstore, &iter, 0, time, -1);
269 gtk_tree_model_get(GTK_TREE_MODEL(lstore), &iter, 0, last_time, -1);
283 static void decompressed_cb(GPid pid, gint status, gpointer _self)
285 decompressed_t *udata = _self;
287 g_warning("wsr88ddec exited with status %d", status);
290 // TODO: pass cur_file as params?
291 load_radar(udata->self, udata->radar_file);
292 g_free(udata->radar_file);
296 static void cached_cb(char *path, gboolean updated, gpointer _self)
298 AWeatherRadar *self = AWEATHER_RADAR(_self);
299 char *decompressed = g_strconcat(path, ".raw", NULL);
301 load_radar(self, decompressed);
305 decompressed_t *udata = g_malloc(sizeof(decompressed_t));
307 udata->radar_file = decompressed;
308 g_message("File updated, decompressing..");
309 char *argv[] = {"wsr88ddec", path, decompressed, NULL};
311 GError *error = NULL;
313 NULL, // const gchar *working_directory,
314 argv, // gchar **argv,
315 NULL, // gchar **envp,
317 G_SPAWN_DO_NOT_REAP_CHILD,
318 // GSpawnFlags flags,
319 NULL, // GSpawnChildSetupFunc child_setup,
320 NULL, // gpointer user_data,
321 &pid, // GPid *child_pid,
322 &error); // GError **error
324 g_warning("failed to decompress WSR88D data: %s",
328 g_child_watch_add(pid, decompressed_cb, udata);
334 static void on_sweep_clicked(GtkRadioButton *button, gpointer _self)
336 AWeatherRadar *self = AWEATHER_RADAR(_self);
337 load_colormap(self, g_object_get_data(G_OBJECT(button), "type" ));
338 load_sweep (self, g_object_get_data(G_OBJECT(button), "sweep"));
341 static void on_time_changed(AWeatherView *view, char *time, gpointer _self)
343 AWeatherRadar *self = AWEATHER_RADAR(_self);
344 g_message("radar:setting time");
345 // format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323
346 char *site = aweather_view_get_site(view);
347 char *base = "http://mesonet.agron.iastate.edu/data/";
348 char *path = g_strdup_printf("nexrd2/raw/K%s/K%s_%s", site, site, time);
350 self->cur_radar = NULL;
351 self->cur_sweep = NULL; // Clear radar
352 aweather_gui_gl_redraw(self->gui);
354 cache_file(base, path, AWEATHER_AUTOMATIC, cached_cb, self);
358 static void on_site_changed(AWeatherView *view, char *site, gpointer _self)
360 AWeatherRadar *self = AWEATHER_RADAR(_self);
361 g_message("Loading wsr88d list for %s", site);
363 update_times(self, site, &time);
364 aweather_view_set_time(view, time);
369 static void on_refresh(AWeatherView *view, gpointer user_data, gpointer _self)
371 AWeatherRadar *self = AWEATHER_RADAR(_self);
372 char *site = aweather_view_get_site(view);
374 update_times(self, site, &time);
375 aweather_view_set_time(view, time);
382 AWeatherRadar *aweather_radar_new(AWeatherGui *gui)
384 //g_message("aweather_view_new");
385 AWeatherRadar *self = g_object_new(AWEATHER_TYPE_RADAR, NULL);
388 GtkWidget *config = aweather_gui_get_widget(gui, "tabs");
389 AWeatherView *view = aweather_gui_get_view(gui);
391 /* Add configuration tab */
392 self->config_body = gtk_alignment_new(0, 0, 1, 1);
393 gtk_container_set_border_width(GTK_CONTAINER(self->config_body), 5);
394 gtk_container_add(GTK_CONTAINER(self->config_body), gtk_label_new("No radar loaded"));
395 gtk_notebook_prepend_page(GTK_NOTEBOOK(config), self->config_body, gtk_label_new("Radar"));
397 /* Set up OpenGL Stuff */
398 g_signal_connect(view, "site-changed", G_CALLBACK(on_site_changed), self);
399 g_signal_connect(view, "time-changed", G_CALLBACK(on_time_changed), self);
400 g_signal_connect(view, "refresh", G_CALLBACK(on_refresh), self);
405 static void _aweather_radar_expose(AWeatherPlugin *_self)
407 AWeatherRadar *self = AWEATHER_RADAR(_self);
408 g_message("radar:expose");
409 if (self->cur_sweep == NULL)
411 Sweep *sweep = self->cur_sweep;
415 glMatrixMode(GL_MODELVIEW);
417 glBindTexture(GL_TEXTURE_2D, self->cur_sweep_tex);
418 glEnable(GL_TEXTURE_2D);
419 glDisable(GL_ALPHA_TEST);
421 glBegin(GL_QUAD_STRIP);
422 for (int ri = 0; ri <= sweep->h.nrays; ri++) {
425 if (ri < sweep->h.nrays) {
426 ray = sweep->ray[ri];
427 angle = ((ray->h.azimuth - ((double)ray->h.beam_width/2.))*M_PI)/180.0;
429 /* Do the right side of the last sweep */
430 ray = sweep->ray[ri-1];
431 angle = ((ray->h.azimuth + ((double)ray->h.beam_width/2.))*M_PI)/180.0;
434 double lx = sin(angle);
435 double ly = cos(angle);
437 double near_dist = ray->h.range_bin1;
438 double far_dist = ray->h.nbins*ray->h.gate_size + ray->h.range_bin1;
440 /* (find middle of bin) / scale for opengl */
442 glTexCoord2f(0.0, (double)ri/sweep->h.nrays-0.01);
443 glVertex3f(lx*near_dist, ly*near_dist, 2.0);
446 glTexCoord2f(1.0, (double)ri/sweep->h.nrays-0.01);
447 glVertex3f(lx*far_dist, ly*far_dist, 2.0);
449 //g_print("ri=%d, nr=%d, bw=%f\n", _ri, sweep->h.nrays, sweep->h.beam_width);
455 //glTexCoord2d( 0., 0.); glVertex3f(-500., 0., 0.); // bot left
456 //glTexCoord2d( 0., 1.); glVertex3f(-500., 500., 0.); // top left
457 //glTexCoord2d( 1., 1.); glVertex3f( 0., 500., 3.); // top right
458 //glTexCoord2d( 1., 0.); glVertex3f( 0., 0., 3.); // bot right
461 /* Print the color table */
462 glDisable(GL_TEXTURE_2D);
463 glDisable(GL_DEPTH_TEST);
464 glMatrixMode(GL_MODELVIEW ); glPushMatrix(); glLoadIdentity();
465 glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity();
468 for (i = 0; i < 256; i++) {
469 glColor4ub(self->cur_colormap->data[i][0],
470 self->cur_colormap->data[i][1],
471 self->cur_colormap->data[i][2],
472 self->cur_colormap->data[i][3]);
473 glVertex3f(-1.0, (float)((i ) - 256/2)/(256/2), 0.0); // bot left
474 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
475 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
476 glVertex3f(-0.9, (float)((i ) - 256/2)/(256/2), 0.0); // bot right
479 glEnable(GL_DEPTH_TEST);
480 glEnable(GL_ALPHA_TEST);
481 glMatrixMode(GL_PROJECTION); glPopMatrix();
482 glMatrixMode(GL_MODELVIEW ); glPopMatrix();