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"
31 GtkWidget *config_body;
32 static Sweep *cur_sweep = NULL; // make this not global
33 //static int nred, ngreen, nblue;
34 //static char red[256], green[256], blue[256];
35 static colormap_t *colormap;
36 static guint sweep_tex = 0;
38 static AWeatherGui *gui = NULL;
39 static Radar *radar = NULL;
41 /**************************
42 * Data loading functions *
43 **************************/
44 /* Convert a sweep to an 2d array of data points */
45 static void bscan_sweep(Sweep *sweep, guint8 **data, int *width, int *height)
47 /* Calculate max number of bins */
49 for (i = 0; i < sweep->h.nrays; i++)
50 max_bins = MAX(max_bins, sweep->ray[i]->h.nbins);
52 /* Allocate buffer using max number of bins for each ray */
53 guint8 *buf = g_malloc0(sweep->h.nrays * max_bins * 4);
57 for (ri = 0; ri < sweep->h.nrays; ri++) {
58 Ray *ray = sweep->ray[ri];
59 for (bi = 0; bi < ray->h.nbins; bi++) {
60 /* copy RGBA into buffer */
61 //guint val = dz_f(ray->range[bi]);
62 guint8 val = (guint8)ray->h.f(ray->range[bi]);
63 guint buf_i = (ri*max_bins+bi)*4;
64 buf[buf_i+0] = colormap->data[val][0];
65 buf[buf_i+1] = colormap->data[val][1];
66 buf[buf_i+2] = colormap->data[val][2];
67 buf[buf_i+3] = colormap->data[val][3];
68 if (val == BADVAL || val == RFVAL || val == APFLAG ||
69 val == NOTFOUND_H || val == NOTFOUND_V || val == NOECHO) {
70 buf[buf_i+3] = 0x00; // transparent
77 *height = sweep->h.nrays;
81 static void load_color_table(char *table)
83 for (int i = 0; colormaps[i].name; i++)
84 if (g_str_equal(colormaps[i].name, table))
85 colormap = &colormaps[i];
88 /* Load a sweep as the active texture */
89 static void load_sweep(Sweep *sweep)
91 aweather_gui_gl_begin(gui);
95 bscan_sweep(sweep, &data, &width, &height);
96 glGenTextures(1, &sweep_tex);
97 glBindTexture(GL_TEXTURE_2D, sweep_tex);
98 glPixelStorei(GL_PACK_ALIGNMENT, 1);
99 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
100 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
101 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
102 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
104 gtk_widget_queue_draw(aweather_gui_get_widget(gui, "drawing"));
105 aweather_gui_gl_end(gui);
108 /* Add selectors to the config area for the sweeps */
109 static void load_radar_gui(Radar *radar)
111 /* Clear existing items */
112 GtkWidget *child = gtk_bin_get_child(GTK_BIN(config_body));
114 gtk_widget_destroy(child);
116 GtkWidget *hbox = gtk_hbox_new(TRUE, 0);
117 GtkWidget *button = NULL;
119 for (vi = 0; vi < radar->h.nvolumes; vi++) {
120 Volume *vol = radar->v[vi];
121 if (vol == NULL) continue;
122 GtkWidget *vbox = gtk_vbox_new(TRUE, 0);
123 for (si = vol->h.nsweeps-1; si >= 0; si--) {
124 Sweep *sweep = vol->sweep[si];
125 if (sweep == NULL) continue;
126 char *label = g_strdup_printf("Tilt: %.2f (%s)", sweep->h.elev, vol->h.type_str);
127 button = gtk_radio_button_new_with_label_from_widget(GTK_RADIO_BUTTON(button), label);
128 g_object_set(button, "draw-indicator", FALSE, NULL);
129 g_signal_connect_swapped(button, "clicked", G_CALLBACK(load_color_table), vol->h.type_str);
130 g_signal_connect_swapped(button, "clicked", G_CALLBACK(load_sweep), sweep);
131 gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, TRUE, 0);
134 gtk_box_set_homogeneous(GTK_BOX(vbox), FALSE);
135 gtk_box_pack_start(GTK_BOX(hbox), vbox, TRUE, TRUE, 0);
137 gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(config_body), hbox);
138 gtk_widget_show_all(hbox);
141 /* Load a radar from a file */
142 static void load_radar_rsl(GPid pid, gint status, gpointer _path)
146 g_warning("wsr88ddec exited with status %d", status);
149 char *site = g_path_get_basename(g_path_get_dirname(path));
150 if (radar) RSL_free_radar(radar);
151 RSL_read_these_sweeps("all", NULL);
152 radar = RSL_wsr88d_to_radar(path, site);
154 g_warning("fail to load radar: path=%s, site=%s", path, site);
158 /* Load the first sweep by default */
159 if (radar->h.nvolumes < 1 || radar->v[0]->h.nsweeps < 1) {
160 g_warning("No sweeps found\n");
162 /* load first available sweep */
163 for (int vi = 0; vi < radar->h.nvolumes; vi++) {
164 if (radar->v[vi]== NULL) continue;
165 for (int si = 0; si < radar->v[vi]->h.nsweeps; si++) {
166 if (radar->v[vi]->sweep[si]== NULL) continue;
167 load_color_table(radar->v[vi]->h.type_str);
168 load_sweep(radar->v[vi]->sweep[si]);
175 load_radar_gui(radar);
178 /* decompress a radar file, then chain to the actuall loading function */
179 static void load_radar(char *path, gpointer user_data)
181 char *raw = g_strconcat(path, ".raw", NULL);
182 if (g_file_test(raw, G_FILE_TEST_EXISTS)) {
183 load_radar_rsl(0, 0, raw);
185 char *argv[] = {"wsr88ddec", path, raw, NULL};
187 GError *error = NULL;
189 NULL, // const gchar *working_directory,
190 argv, // gchar **argv,
191 NULL, // gchar **envp,
193 G_SPAWN_DO_NOT_REAP_CHILD,
194 // GSpawnFlags flags,
195 NULL, // GSpawnChildSetupFunc child_setup,
196 NULL, // gpointer user_data,
197 &pid, // GPid *child_pid,
198 &error); // GError **error
200 g_warning("failed to decompress WSR88D data: %s", error->message);
201 g_child_watch_add(pid, load_radar_rsl, raw);
208 static gboolean expose(GtkWidget *da, GdkEventExpose *event, gpointer user_data)
210 g_message("radar:expose");
211 if (cur_sweep == NULL)
213 Sweep *sweep = cur_sweep;
217 glMatrixMode(GL_MODELVIEW);
219 glBindTexture(GL_TEXTURE_2D, sweep_tex);
220 glEnable(GL_TEXTURE_2D);
221 glDisable(GL_ALPHA_TEST);
223 glBegin(GL_QUAD_STRIP);
224 for (int ri = 0; ri <= sweep->h.nrays+1; ri++) {
225 /* Do the first sweep twice to complete the last Quad */
226 Ray *ray = sweep->ray[ri % sweep->h.nrays];
228 /* right and left looking out from radar */
229 double left = ((ray->h.azimuth - ((double)ray->h.beam_width/2.))*M_PI)/180.0;
230 //double right = ((ray->h.azimuth + ((double)ray->h.beam_width/2.))*M_PI)/180.0;
232 double lx = sin(left);
233 double ly = cos(left);
235 double near_dist = ray->h.range_bin1;
236 double far_dist = ray->h.nbins*ray->h.gate_size + ray->h.range_bin1;
238 /* (find middle of bin) / scale for opengl */
240 glTexCoord2f(0.0, (double)ri/sweep->h.nrays);
241 glVertex3f(lx*near_dist, ly*near_dist, 2.0);
244 glTexCoord2f(1.0, (double)ri/sweep->h.nrays);
245 glVertex3f(lx*far_dist, ly*far_dist, 2.0);
247 //g_print("ri=%d, nr=%d, bw=%f\n", _ri, sweep->h.nrays, sweep->h.beam_width);
253 //glTexCoord2d( 0., 0.); glVertex3f(-1., 0., 0.); // bot left
254 //glTexCoord2d( 0., 1.); glVertex3f(-1., 1., 0.); // top left
255 //glTexCoord2d( 1., 1.); glVertex3f( 0., 1., 0.); // top right
256 //glTexCoord2d( 1., 0.); glVertex3f( 0., 0., 0.); // bot right
259 /* Print the color table */
260 glDisable(GL_TEXTURE_2D);
261 glDisable(GL_DEPTH_TEST);
262 glMatrixMode(GL_MODELVIEW ); glPushMatrix(); glLoadIdentity();
263 glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity();
266 for (i = 0; i < 256; i++) {
267 glColor4ub(colormap->data[i][0],
268 colormap->data[i][1],
269 colormap->data[i][2],
270 colormap->data[i][3]);
271 glVertex3f(-1.0, (float)((i ) - 256/2)/(256/2), 0.0); // bot left
272 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
273 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
274 glVertex3f(-0.9, (float)((i ) - 256/2)/(256/2), 0.0); // bot right
277 glEnable(GL_DEPTH_TEST);
278 glEnable(GL_ALPHA_TEST);
279 glMatrixMode(GL_PROJECTION); glPopMatrix();
280 glMatrixMode(GL_MODELVIEW ); glPopMatrix();
284 static void set_time(AWeatherView *view, char *time, gpointer user_data)
286 g_message("radar:setting time");
287 // format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323
288 char *site = aweather_view_get_location(view);
289 char *base = "http://mesonet.agron.iastate.edu/data/";
290 char *path = g_strdup_printf("nexrd2/raw/K%s/K%s_%s", site, site, time);
291 //g_message("caching %s/%s", base, path);
292 cur_sweep = NULL; // Clear radar
293 gtk_widget_queue_draw(aweather_gui_get_widget(gui, "drawing"));
294 cache_file(base, path, load_radar, NULL);
297 static void set_site(AWeatherView *view, char *site, gpointer user_data)
299 g_message("Loading wsr88d list for %s", site);
302 GError *error = NULL;
303 char *list_uri = g_strdup_printf("http://mesonet.agron.iastate.edu/data/nexrd2/raw/K%s/dir.list", site);
304 GFile *list = g_file_new_for_uri(list_uri);
305 cur_sweep = NULL; // Clear radar
306 gtk_widget_queue_draw(aweather_gui_get_widget(gui, "drawing"));
307 g_file_load_contents(list, NULL, &data, &length, NULL, &error);
309 g_warning("Error loading list for %s: %s", site, error->message);
312 gchar **lines = g_strsplit(data, "\n", -1);
313 GtkTreeView *tview = GTK_TREE_VIEW(aweather_gui_get_widget(gui, "time"));
314 GtkListStore *lstore = GTK_LIST_STORE(gtk_tree_view_get_model(tview));
315 gtk_list_store_clear(lstore);
318 for (int i = 0; lines[i] && lines[i][0]; i++) {
319 // format: `841907 KABR_20090510_0159'
320 //g_message("\tadding %p [%s]", lines[i], lines[i]);
321 char **parts = g_strsplit(lines[i], " ", 2);
324 gtk_list_store_insert(lstore, &iter, 0);
325 gtk_list_store_set(lstore, &iter, 0, time, -1);
328 aweather_view_set_time(view, time);
332 gboolean radar_init(AWeatherGui *_gui)
335 drawing = aweather_gui_get_widget(gui, "drawing");
336 GtkNotebook *config = GTK_NOTEBOOK(aweather_gui_get_widget(gui, "tabs"));
337 AWeatherView *view = aweather_gui_get_view(gui);
339 /* Add configuration tab */
340 config_body = gtk_scrolled_window_new(NULL, NULL);
341 gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(config_body), gtk_label_new("No radar loaded"));
342 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(config_body), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
343 gtk_notebook_append_page(GTK_NOTEBOOK(config), config_body, gtk_label_new("Radar"));
345 /* Set up OpenGL Stuff */
346 g_signal_connect(drawing, "expose-event", G_CALLBACK(expose), NULL);
347 g_signal_connect(view, "location-changed", G_CALLBACK(set_site), NULL);
348 g_signal_connect(view, "time-changed", G_CALLBACK(set_time), NULL);