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) {
156 elev = sweep->h.elev;
159 g_object_get(table, "n-columns", &cur_cols, NULL);
160 if (cols > cur_cols) {
161 g_snprintf(col_label_str, 64, "<b>%.2f°</b>", elev);
162 col_label = gtk_label_new(col_label_str);
163 gtk_label_set_use_markup(GTK_LABEL(col_label), TRUE);
164 gtk_widget_set_size_request(col_label, 40, -1);
165 gtk_table_attach(GTK_TABLE(table), col_label,
166 cols-1,cols, 0,1, GTK_FILL,GTK_FILL, 0,0);
169 elev_box = gtk_hbox_new(TRUE, 0);
170 gtk_table_attach(GTK_TABLE(table), elev_box,
171 cols-1,cols, rows-1,rows, GTK_FILL,GTK_FILL, 0,0);
176 g_snprintf(button_str, 64, "%3.2f", elev);
177 button = gtk_radio_button_new_with_label_from_widget(
178 GTK_RADIO_BUTTON(button), button_str);
179 gtk_widget_set_size_request(button, -1, 26);
180 //button = gtk_radio_button_new_from_widget(GTK_RADIO_BUTTON(button));
181 //gtk_widget_set_size_request(button, -1, 22);
182 g_object_set(button, "draw-indicator", FALSE, NULL);
183 gtk_box_pack_end(GTK_BOX(elev_box), button, TRUE, TRUE, 0);
185 g_object_set_data(G_OBJECT(button), "type", vol->h.type_str);
186 g_object_set_data(G_OBJECT(button), "sweep", sweep);
187 g_signal_connect(button, "clicked", G_CALLBACK(on_sweep_clicked), self);
190 gtk_container_add(GTK_CONTAINER(self->config_body), table);
191 gtk_widget_show_all(table);
194 /* Load a radar from a decompressed file */
195 static void load_radar(AWeatherRadar *self, gchar *radar_file)
197 char *dir = g_path_get_dirname(radar_file);
198 char *site = g_path_get_basename(dir);
200 g_debug("AWeatherRadar: load_radar - Loading new radar");
201 RSL_read_these_sweeps("all", NULL);
202 Radar *radar = self->cur_radar = RSL_wsr88d_to_radar(radar_file, site);
204 g_warning("fail to load radar: path=%s, site=%s", radar_file, site);
210 /* Load the first sweep by default */
211 if (radar->h.nvolumes < 1 || radar->v[0]->h.nsweeps < 1) {
212 g_warning("No sweeps found\n");
214 /* load first available sweep */
215 for (int vi = 0; vi < radar->h.nvolumes; vi++) {
216 if (radar->v[vi]== NULL) continue;
217 for (int si = 0; si < radar->v[vi]->h.nsweeps; si++) {
218 if (radar->v[vi]->sweep[si]== NULL) continue;
219 load_colormap(self, radar->v[vi]->h.type_str);
220 load_sweep(self, radar->v[vi]->sweep[si]);
227 load_radar_gui(self, radar);
230 static void update_times(AWeatherRadar *self, char *site, char **last_time)
232 char *list_uri = g_strdup_printf(
233 "http://mesonet.agron.iastate.edu/data/nexrd2/raw/K%s/dir.list",
235 GFile *list = g_file_new_for_uri(list_uri);
240 GError *error = NULL;
241 g_file_load_contents(list, NULL, &data, &length, NULL, &error);
242 g_object_unref(list);
244 g_warning("Error loading list for %s: %s", site, error->message);
248 gchar **lines = g_strsplit(data, "\n", -1);
249 GtkTreeView *tview = GTK_TREE_VIEW(aweather_gui_get_widget(self->gui, "time"));
250 GtkListStore *lstore = GTK_LIST_STORE(gtk_tree_view_get_model(tview));
251 gtk_list_store_clear(lstore);
253 for (int i = 0; lines[i] && lines[i][0]; i++) {
254 // format: `841907 KABR_20090510_0159'
255 //g_message("\tadding %p [%s]", lines[i], lines[i]);
256 char **parts = g_strsplit(lines[i], " ", 2);
257 char *time = parts[1]+5;
258 gtk_list_store_insert(lstore, &iter, 0);
259 gtk_list_store_set(lstore, &iter, 0, time, -1);
264 gtk_tree_model_get(GTK_TREE_MODEL(lstore), &iter, 0, last_time, -1);
278 static void decompressed_cb(GPid pid, gint status, gpointer _udata)
280 decompressed_t *udata = _udata;
282 g_warning("wsr88ddec exited with status %d", status);
285 load_radar(udata->self, udata->radar_file);
286 g_spawn_close_pid(pid);
287 g_free(udata->radar_file);
291 static void cached_cb(char *path, gboolean updated, gpointer _self)
293 AWeatherRadar *self = AWEATHER_RADAR(_self);
294 char *decompressed = g_strconcat(path, ".raw", NULL);
296 load_radar(self, decompressed);
300 decompressed_t *udata = g_malloc(sizeof(decompressed_t));
302 udata->radar_file = decompressed;
303 g_debug("AWeatherRadar: cached_cb - File updated, decompressing..");
304 char *argv[] = {"wsr88ddec", path, decompressed, NULL};
306 GError *error = NULL;
308 NULL, // const gchar *working_directory,
309 argv, // gchar **argv,
310 NULL, // gchar **envp,
312 G_SPAWN_DO_NOT_REAP_CHILD,
313 // GSpawnFlags flags,
314 NULL, // GSpawnChildSetupFunc child_setup,
315 NULL, // gpointer user_data,
316 &pid, // GPid *child_pid,
317 &error); // GError **error
319 g_warning("failed to decompress WSR88D data: %s",
323 g_child_watch_add(pid, decompressed_cb, udata);
329 static void on_sweep_clicked(GtkRadioButton *button, gpointer _self)
331 AWeatherRadar *self = AWEATHER_RADAR(_self);
332 load_colormap(self, g_object_get_data(G_OBJECT(button), "type" ));
333 load_sweep (self, g_object_get_data(G_OBJECT(button), "sweep"));
336 static void on_time_changed(AWeatherView *view, char *time, gpointer _self)
338 AWeatherRadar *self = AWEATHER_RADAR(_self);
339 g_debug("AWeatherRadar: on_time_changed - setting time");
340 // format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323
341 char *site = aweather_view_get_site(view);
342 char *base = "http://mesonet.agron.iastate.edu/data/";
343 char *path = g_strdup_printf("nexrd2/raw/K%s/K%s_%s", site, site, time);
345 /* Clear out children */
346 GtkWidget *child = gtk_bin_get_child(GTK_BIN(self->config_body));
348 gtk_widget_destroy(child);
349 gtk_container_add(GTK_CONTAINER(self->config_body),
350 gtk_label_new("Loading radar..."));
351 gtk_widget_show_all(self->config_body);
353 RSL_free_radar(self->cur_radar);
354 self->cur_radar = NULL;
355 self->cur_sweep = NULL;
356 aweather_gui_gl_redraw(self->gui);
358 /* Start loading the new radar */
359 cache_file(base, path, AWEATHER_AUTOMATIC, cached_cb, self);
363 static void on_site_changed(AWeatherView *view, char *site, gpointer _self)
365 AWeatherRadar *self = AWEATHER_RADAR(_self);
366 g_debug("AWeatherRadar: on_site_changed - Loading wsr88d list for %s", site);
368 update_times(self, site, &time);
369 aweather_view_set_time(view, time);
374 static void on_refresh(AWeatherView *view, gpointer _self)
376 AWeatherRadar *self = AWEATHER_RADAR(_self);
377 char *site = aweather_view_get_site(view);
379 update_times(self, site, &time);
380 aweather_view_set_time(view, time);
387 AWeatherRadar *aweather_radar_new(AWeatherGui *gui)
389 g_debug("AWeatherRadar: new");
390 AWeatherRadar *self = g_object_new(AWEATHER_TYPE_RADAR, NULL);
393 GtkWidget *config = aweather_gui_get_widget(gui, "tabs");
394 AWeatherView *view = aweather_gui_get_view(gui);
396 /* Add configuration tab */
397 self->config_body = gtk_alignment_new(0, 0, 1, 1);
398 gtk_container_set_border_width(GTK_CONTAINER(self->config_body), 5);
399 gtk_container_add(GTK_CONTAINER(self->config_body), gtk_label_new("No radar loaded"));
400 gtk_notebook_prepend_page(GTK_NOTEBOOK(config), self->config_body, gtk_label_new("Radar"));
402 /* Set up OpenGL Stuff */
403 g_signal_connect(view, "site-changed", G_CALLBACK(on_site_changed), self);
404 g_signal_connect(view, "time-changed", G_CALLBACK(on_time_changed), self);
405 g_signal_connect(view, "refresh", G_CALLBACK(on_refresh), self);
410 static void _aweather_radar_expose(AWeatherPlugin *_self)
412 AWeatherRadar *self = AWEATHER_RADAR(_self);
413 g_debug("AWeatherRadar: expose");
414 if (self->cur_sweep == NULL)
416 Sweep *sweep = self->cur_sweep;
420 glMatrixMode(GL_MODELVIEW);
422 glBindTexture(GL_TEXTURE_2D, self->cur_sweep_tex);
423 glEnable(GL_TEXTURE_2D);
424 glDisable(GL_ALPHA_TEST);
426 glBegin(GL_QUAD_STRIP);
427 for (int ri = 0; ri <= sweep->h.nrays; ri++) {
430 if (ri < sweep->h.nrays) {
431 ray = sweep->ray[ri];
432 angle = ((ray->h.azimuth - ((double)ray->h.beam_width/2.))*M_PI)/180.0;
434 /* Do the right side of the last sweep */
435 ray = sweep->ray[ri-1];
436 angle = ((ray->h.azimuth + ((double)ray->h.beam_width/2.))*M_PI)/180.0;
439 double lx = sin(angle);
440 double ly = cos(angle);
442 double near_dist = ray->h.range_bin1;
443 double far_dist = ray->h.nbins*ray->h.gate_size + ray->h.range_bin1;
445 /* (find middle of bin) / scale for opengl */
447 glTexCoord2f(0.0, (double)ri/sweep->h.nrays-0.01);
448 glVertex3f(lx*near_dist, ly*near_dist, 2.0);
451 glTexCoord2f(1.0, (double)ri/sweep->h.nrays-0.01);
452 glVertex3f(lx*far_dist, ly*far_dist, 2.0);
454 //g_print("ri=%d, nr=%d, bw=%f\n", _ri, sweep->h.nrays, sweep->h.beam_width);
460 //glTexCoord2d( 0., 0.); glVertex3f(-500., 0., 0.); // bot left
461 //glTexCoord2d( 0., 1.); glVertex3f(-500., 500., 0.); // top left
462 //glTexCoord2d( 1., 1.); glVertex3f( 0., 500., 3.); // top right
463 //glTexCoord2d( 1., 0.); glVertex3f( 0., 0., 3.); // bot right
466 /* Print the color table */
467 glDisable(GL_TEXTURE_2D);
468 glDisable(GL_DEPTH_TEST);
469 glMatrixMode(GL_MODELVIEW ); glPushMatrix(); glLoadIdentity();
470 glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity();
473 for (i = 0; i < 256; i++) {
474 glColor4ub(self->cur_colormap->data[i][0],
475 self->cur_colormap->data[i][1],
476 self->cur_colormap->data[i][2],
477 self->cur_colormap->data[i][3]);
478 glVertex3f(-1.0, (float)((i ) - 256/2)/(256/2), 0.0); // bot left
479 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
480 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
481 glVertex3f(-0.9, (float)((i ) - 256/2)/(256/2), 0.0); // bot right
484 glEnable(GL_DEPTH_TEST);
485 glEnable(GL_ALPHA_TEST);
486 glMatrixMode(GL_PROJECTION); glPopMatrix();
487 glMatrixMode(GL_MODELVIEW ); glPopMatrix();