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 /* TODO: User parameters or user data or something */
53 static AWeatherRadar *self = NULL;
55 /**************************
56 * Data loading functions *
57 **************************/
58 /* Convert a sweep to an 2d array of data points */
59 static void bscan_sweep(Sweep *sweep, guint8 **data, int *width, int *height)
61 /* Calculate max number of bins */
63 for (i = 0; i < sweep->h.nrays; i++)
64 max_bins = MAX(max_bins, sweep->ray[i]->h.nbins);
66 /* Allocate buffer using max number of bins for each ray */
67 guint8 *buf = g_malloc0(sweep->h.nrays * max_bins * 4);
71 for (ri = 0; ri < sweep->h.nrays; ri++) {
72 Ray *ray = sweep->ray[ri];
73 for (bi = 0; bi < ray->h.nbins; bi++) {
74 /* copy RGBA into buffer */
75 //guint val = dz_f(ray->range[bi]);
76 guint8 val = (guint8)ray->h.f(ray->range[bi]);
77 guint buf_i = (ri*max_bins+bi)*4;
78 buf[buf_i+0] = self->cur_colormap->data[val][0];
79 buf[buf_i+1] = self->cur_colormap->data[val][1];
80 buf[buf_i+2] = self->cur_colormap->data[val][2];
81 buf[buf_i+3] = self->cur_colormap->data[val][3];
82 if (val == BADVAL || val == RFVAL || val == APFLAG ||
83 val == NOTFOUND_H || val == NOTFOUND_V || val == NOECHO) {
84 buf[buf_i+3] = 0x00; // transparent
91 *height = sweep->h.nrays;
95 static void load_color_table(char *table)
97 for (int i = 0; colormaps[i].name; i++)
98 if (g_str_equal(colormaps[i].name, table))
99 self->cur_colormap = &colormaps[i];
102 /* Load a sweep as the active texture */
103 static void load_sweep(Sweep *sweep)
105 aweather_gui_gl_begin(self->gui);
106 self->cur_sweep = sweep;
109 bscan_sweep(sweep, &data, &width, &height);
110 glDeleteTextures(1, &self->cur_sweep_tex);
111 glGenTextures(1, &self->cur_sweep_tex);
112 glBindTexture(GL_TEXTURE_2D, self->cur_sweep_tex);
113 glPixelStorei(GL_PACK_ALIGNMENT, 1);
114 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
115 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
116 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
117 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0,
118 GL_RGBA, GL_UNSIGNED_BYTE, data);
120 aweather_gui_gl_redraw(self->gui);
121 aweather_gui_gl_end(self->gui);
124 /* Add selectors to the config area for the sweeps */
125 static void load_radar_gui(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);
185 g_signal_connect_swapped(button, "clicked",
186 G_CALLBACK(load_color_table), vol->h.type_str);
187 g_signal_connect_swapped(button, "clicked",
188 G_CALLBACK(load_sweep), sweep);
191 gtk_container_add(GTK_CONTAINER(self->config_body), table);
192 gtk_widget_show_all(table);
195 /* Load a radar from a file */
196 static void load_radar_rsl(GPid pid, gint status, gpointer _path)
200 g_warning("wsr88ddec exited with status %d", status);
203 char *dir = g_path_get_dirname(path);
204 char *site = g_path_get_basename(dir);
206 RSL_read_these_sweeps("all", NULL);
207 if (self->cur_radar) {
208 g_message("Freeing radar");
209 RSL_free_radar(self->cur_radar);
211 g_message("Allocating radar");
212 Radar *radar = self->cur_radar = RSL_wsr88d_to_radar(path, site);
214 g_warning("fail to load radar: path=%s, site=%s", path, site);
222 /* Load the first sweep by default */
223 if (radar->h.nvolumes < 1 || radar->v[0]->h.nsweeps < 1) {
224 g_warning("No sweeps found\n");
226 /* load first available sweep */
227 for (int vi = 0; vi < radar->h.nvolumes; vi++) {
228 if (radar->v[vi]== NULL) continue;
229 for (int si = 0; si < radar->v[vi]->h.nsweeps; si++) {
230 if (radar->v[vi]->sweep[si]== NULL) continue;
231 load_color_table(radar->v[vi]->h.type_str);
232 load_sweep(radar->v[vi]->sweep[si]);
239 load_radar_gui(radar);
242 /* decompress a radar file, then chain to the actuall loading function */
243 static void load_radar(char *path, gboolean updated, gpointer user_data)
245 char *raw = g_strconcat(path, ".raw", NULL);
247 load_radar_rsl(0, 0, raw);
249 g_message("File updated, decompressing..");
250 char *argv[] = {"wsr88ddec", path, raw, NULL};
252 GError *error = NULL;
254 NULL, // const gchar *working_directory,
255 argv, // gchar **argv,
256 NULL, // gchar **envp,
258 G_SPAWN_DO_NOT_REAP_CHILD,
259 // GSpawnFlags flags,
260 NULL, // GSpawnChildSetupFunc child_setup,
261 NULL, // gpointer user_data,
262 &pid, // GPid *child_pid,
263 &error); // GError **error
265 g_warning("failed to decompress WSR88D data: %s",
269 g_child_watch_add(pid, load_radar_rsl, raw);
273 static void update_times(char *site, char **last_time)
275 char *list_uri = g_strdup_printf(
276 "http://mesonet.agron.iastate.edu/data/nexrd2/raw/K%s/dir.list",
278 GFile *list = g_file_new_for_uri(list_uri);
283 GError *error = NULL;
284 g_file_load_contents(list, NULL, &data, &length, NULL, &error);
285 g_object_unref(list);
287 g_warning("Error loading list for %s: %s", site, error->message);
291 gchar **lines = g_strsplit(data, "\n", -1);
292 GtkTreeView *tview = GTK_TREE_VIEW(aweather_gui_get_widget(self->gui, "time"));
293 GtkListStore *lstore = GTK_LIST_STORE(gtk_tree_view_get_model(tview));
294 gtk_list_store_clear(lstore);
296 for (int i = 0; lines[i] && lines[i][0]; i++) {
297 // format: `841907 KABR_20090510_0159'
298 //g_message("\tadding %p [%s]", lines[i], lines[i]);
299 char **parts = g_strsplit(lines[i], " ", 2);
300 char *time = parts[1]+5;
301 gtk_list_store_insert(lstore, &iter, 0);
302 gtk_list_store_set(lstore, &iter, 0, time, -1);
307 gtk_tree_model_get(GTK_TREE_MODEL(lstore), &iter, 0, last_time, -1);
316 static void on_time_changed(AWeatherView *view, char *time, gpointer user_data)
318 g_message("radar:setting time");
319 // format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323
320 char *site = aweather_view_get_site(view);
321 char *base = "http://mesonet.agron.iastate.edu/data/";
322 char *path = g_strdup_printf("nexrd2/raw/K%s/K%s_%s", site, site, time);
324 self->cur_radar = NULL;
325 self->cur_sweep = NULL; // Clear radar
326 aweather_gui_gl_redraw(self->gui);
328 cache_file(base, path, AWEATHER_AUTOMATIC, load_radar, NULL);
332 static void on_site_changed(AWeatherView *view, char *site, gpointer user_data)
334 g_message("Loading wsr88d list for %s", site);
336 update_times(site, &time);
337 aweather_view_set_time(view, time);
342 static void on_refresh(AWeatherView *view, gpointer user_data)
344 char *site = aweather_view_get_site(view);
346 update_times(site, &time);
347 aweather_view_set_time(view, time);
356 AWeatherRadar *aweather_radar_new(AWeatherGui *gui)
358 //g_message("aweather_view_new");
359 AWeatherRadar *radar = g_object_new(AWEATHER_TYPE_RADAR, NULL);
364 GtkWidget *config = aweather_gui_get_widget(gui, "tabs");
365 AWeatherView *view = aweather_gui_get_view(gui);
367 /* Add configuration tab */
368 self->config_body = gtk_alignment_new(0, 0, 1, 1);
369 gtk_container_set_border_width(GTK_CONTAINER(self->config_body), 5);
370 gtk_container_add(GTK_CONTAINER(self->config_body), gtk_label_new("No radar loaded"));
371 gtk_notebook_prepend_page(GTK_NOTEBOOK(config), self->config_body, gtk_label_new("Radar"));
373 /* Set up OpenGL Stuff */
374 g_signal_connect(view, "site-changed", G_CALLBACK(on_site_changed), NULL);
375 g_signal_connect(view, "time-changed", G_CALLBACK(on_time_changed), NULL);
376 g_signal_connect(view, "refresh", G_CALLBACK(on_refresh), NULL);
381 static void aweather_radar_expose(AWeatherPlugin *_radar)
383 AWeatherRadar *radar = AWEATHER_RADAR(_radar);
384 g_message("radar:expose");
385 if (self->cur_sweep == NULL)
387 Sweep *sweep = self->cur_sweep;
391 glMatrixMode(GL_MODELVIEW);
393 glBindTexture(GL_TEXTURE_2D, self->cur_sweep_tex);
394 glEnable(GL_TEXTURE_2D);
395 glDisable(GL_ALPHA_TEST);
397 glBegin(GL_QUAD_STRIP);
398 for (int ri = 0; ri <= sweep->h.nrays; ri++) {
401 if (ri < sweep->h.nrays) {
402 ray = sweep->ray[ri];
403 angle = ((ray->h.azimuth - ((double)ray->h.beam_width/2.))*M_PI)/180.0;
405 /* Do the right side of the last sweep */
406 ray = sweep->ray[ri-1];
407 angle = ((ray->h.azimuth + ((double)ray->h.beam_width/2.))*M_PI)/180.0;
410 double lx = sin(angle);
411 double ly = cos(angle);
413 double near_dist = ray->h.range_bin1;
414 double far_dist = ray->h.nbins*ray->h.gate_size + ray->h.range_bin1;
416 /* (find middle of bin) / scale for opengl */
418 glTexCoord2f(0.0, (double)ri/sweep->h.nrays-0.01);
419 glVertex3f(lx*near_dist, ly*near_dist, 2.0);
422 glTexCoord2f(1.0, (double)ri/sweep->h.nrays-0.01);
423 glVertex3f(lx*far_dist, ly*far_dist, 2.0);
425 //g_print("ri=%d, nr=%d, bw=%f\n", _ri, sweep->h.nrays, sweep->h.beam_width);
431 //glTexCoord2d( 0., 0.); glVertex3f(-500., 0., 0.); // bot left
432 //glTexCoord2d( 0., 1.); glVertex3f(-500., 500., 0.); // top left
433 //glTexCoord2d( 1., 1.); glVertex3f( 0., 500., 3.); // top right
434 //glTexCoord2d( 1., 0.); glVertex3f( 0., 0., 3.); // bot right
437 /* Print the color table */
438 glDisable(GL_TEXTURE_2D);
439 glDisable(GL_DEPTH_TEST);
440 glMatrixMode(GL_MODELVIEW ); glPushMatrix(); glLoadIdentity();
441 glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity();
444 for (i = 0; i < 256; i++) {
445 glColor4ub(self->cur_colormap->data[i][0],
446 self->cur_colormap->data[i][1],
447 self->cur_colormap->data[i][2],
448 self->cur_colormap->data[i][3]);
449 glVertex3f(-1.0, (float)((i ) - 256/2)/(256/2), 0.0); // bot left
450 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
451 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
452 glVertex3f(-0.9, (float)((i ) - 256/2)/(256/2), 0.0); // bot right
455 glEnable(GL_DEPTH_TEST);
456 glEnable(GL_ALPHA_TEST);
457 glMatrixMode(GL_PROJECTION); glPopMatrix();
458 glMatrixMode(GL_MODELVIEW ); glPopMatrix();