2 * Copyright (C) 2009-2010 Andy Spencer <andy753421@gmail.com>
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/>.
21 #include <glib/gstdio.h>
30 /**************************
31 * Data loading functions *
32 **************************/
33 /* Convert a sweep to an 2d array of data points */
34 static void _bscan_sweep(Sweep *sweep, AWeatherColormap *colormap,
35 guint8 **data, int *width, int *height)
37 g_debug("AWeatherLevel2: _bscan_sweep - %p, %p, %p",
38 sweep, colormap, data);
39 /* Calculate max number of bins */
41 for (int i = 0; i < sweep->h.nrays; i++)
42 max_bins = MAX(max_bins, sweep->ray[i]->h.nbins);
44 /* Allocate buffer using max number of bins for each ray */
45 guint8 *buf = g_malloc0(sweep->h.nrays * max_bins * 4);
48 for (int ri = 0; ri < sweep->h.nrays; ri++) {
49 Ray *ray = sweep->ray[ri];
50 for (int bi = 0; bi < ray->h.nbins; bi++) {
51 guint buf_i = (ri*max_bins+bi)*4;
52 float value = ray->h.f(ray->range[bi]);
54 /* Check for bad values */
55 if (value == BADVAL || value == RFVAL || value == APFLAG ||
56 value == NOTFOUND_H || value == NOTFOUND_V || value == NOECHO) {
57 buf[buf_i+3] = 0x00; // transparent
61 /* Copy color to buffer */
62 guint8 *data = colormap_get(colormap, value);
63 buf[buf_i+0] = data[0];
64 buf[buf_i+1] = data[1];
65 buf[buf_i+2] = data[2];
66 buf[buf_i+3] = data[3]*0.75; // TESTING
72 *height = sweep->h.nrays;
76 /* Load a sweep into an OpenGL texture */
77 static void _load_sweep_gl(AWeatherLevel2 *level2)
79 g_debug("AWeatherLevel2: _load_sweep_gl");
82 _bscan_sweep(level2->sweep, level2->sweep_colors, &data, &width, &height);
83 gint tex_width = pow(2, ceil(log(width )/log(2)));
84 gint tex_height = pow(2, ceil(log(height)/log(2)));
85 level2->sweep_coords[0] = (double)width / tex_width;
86 level2->sweep_coords[1] = (double)height / tex_height;
88 if (!level2->sweep_tex)
89 glGenTextures(1, &level2->sweep_tex);
90 glBindTexture(GL_TEXTURE_2D, level2->sweep_tex);
91 glPixelStorei(GL_PACK_ALIGNMENT, 1);
92 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
93 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, tex_width, tex_height, 0,
94 GL_RGBA, GL_UNSIGNED_BYTE, NULL);
95 glTexSubImage2D(GL_TEXTURE_2D, 0, 0,0, width,height,
96 GL_RGBA, GL_UNSIGNED_BYTE, data);
97 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
98 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
103 /* Decompress a radar file using wsr88dec */
104 static gboolean _decompress_radar(const gchar *file, const gchar *raw)
106 g_debug("AWeatherLevel2: _decompress_radar - \n\t%s\n\t%s", file, raw);
107 char *argv[] = {"wsr88ddec", (gchar*)file, (gchar*)raw, NULL};
109 GError *error = NULL;
111 NULL, // const gchar *working_directory
112 argv, // gchar **argv
113 NULL, // gchar **envp
114 G_SPAWN_SEARCH_PATH, // GSpawnFlags flags
115 NULL, // GSpawnChildSetupFunc child_setup
116 NULL, // gpointer user_data
117 NULL, // gchar *standard_output
118 NULL, // gchar *standard_output
119 &status, // gint *exit_status
120 &error); // GError **error
122 g_warning("AWeatherLevel2: _decompress_radar - %s", error->message);
127 gchar *msg = g_strdup_printf("wsr88ddec exited with status %d", status);
128 g_warning("AWeatherLevel2: _decompress_radar - %s", msg);
135 /* Load the radar into a Grits Volume */
136 static void _cart_to_sphere(VolCoord *out, VolCoord *in)
138 gdouble angle = in->x;
139 gdouble dist = in->y;
140 gdouble tilt = in->z;
141 gdouble lx = sin(angle);
142 gdouble ly = cos(angle);
143 gdouble lz = sin(tilt);
144 //out->x = (ly*dist)/20000;
145 //out->y = (lz*dist)/10000-0.5;
146 //out->z = (lx*dist)/20000-1.5;
152 static VolGrid *_load_grid(Volume *vol)
154 g_debug("AWeatherLevel2: _load_grid");
156 Sweep *sweep = vol->sweep[0];
157 Ray *ray = sweep->ray[0];
158 gint nsweeps = vol->h.nsweeps;
159 gint nrays = sweep->h.nrays/(1/sweep->h.beam_width)+1;
160 gint nbins = ray->h.nbins /(1000/ray->h.gate_size);
161 nbins = MIN(nbins, 150);
163 VolGrid *grid = vol_grid_new(nrays, nbins, nsweeps);
166 gint si=0, ri=0, bi=0;
167 for (si = 0; si < nsweeps; si++) {
168 sweep = vol->sweep[si];
169 rs = 1.0/sweep->h.beam_width;
170 for (ri = 0; ri < nrays; ri++) {
171 /* TODO: missing rays, pick ri based on azmith */
172 ray = sweep->ray[(ri*rs) % sweep->h.nrays];
173 bs = 1000/ray->h.gate_size;
174 for (bi = 0; bi < nbins; bi++) {
175 if (bi*bs >= ray->h.nbins)
177 val = ray->h.f(ray->range[bi*bs]);
178 if (val == BADVAL || val == RFVAL ||
179 val == APFLAG || val == NOECHO ||
180 val == NOTFOUND_H || val == NOTFOUND_V ||
183 VolPoint *point = vol_grid_get(grid, ri, bi, si);
185 point->c.x = deg2rad(ray->h.azimuth);
186 point->c.y = bi*bs*ray->h.gate_size + ray->h.range_bin1;
187 point->c.z = deg2rad(ray->h.elev);
190 for (si = 0; si < nsweeps; si++)
191 for (ri = 0; ri < nrays; ri++)
192 for (bi = 0; bi < nbins; bi++) {
193 VolPoint *point = vol_grid_get(grid, ri, bi, si);
195 point->value = nan("");
197 _cart_to_sphere(&point->c, &point->c);
203 /*********************
204 * Drawing functions *
205 *********************/
206 void aweather_level2_draw(GritsObject *_level2, GritsOpenGL *opengl)
208 AWeatherLevel2 *level2 = AWEATHER_LEVEL2(_level2);
209 if (!level2->sweep || !level2->sweep_tex)
213 Sweep *sweep = level2->sweep;
214 glDisable(GL_ALPHA_TEST);
215 glDisable(GL_CULL_FACE);
216 glDisable(GL_LIGHTING);
217 glEnable(GL_TEXTURE_2D);
218 glEnable(GL_POLYGON_OFFSET_FILL);
219 glPolygonOffset(1.0, -2.0);
223 gdouble xscale = level2->sweep_coords[0];
224 gdouble yscale = level2->sweep_coords[1];
225 glBindTexture(GL_TEXTURE_2D, level2->sweep_tex);
226 glBegin(GL_TRIANGLE_STRIP);
227 for (int ri = 0; ri <= sweep->h.nrays; ri++) {
230 if (ri < sweep->h.nrays) {
231 ray = sweep->ray[ri];
232 angle = deg2rad(ray->h.azimuth - ((double)ray->h.beam_width/2.));
234 /* Do the right side of the last sweep */
235 ray = sweep->ray[ri-1];
236 angle = deg2rad(ray->h.azimuth + ((double)ray->h.beam_width/2.));
239 double lx = sin(angle);
240 double ly = cos(angle);
242 double near_dist = ray->h.range_bin1 - ((double)ray->h.gate_size/2.);
243 double far_dist = near_dist + (double)ray->h.nbins*ray->h.gate_size;
245 /* (find middle of bin) / scale for opengl */
247 glTexCoord2f(0.0, ((double)ri/sweep->h.nrays)*yscale);
248 glVertex3f(lx*near_dist, ly*near_dist, 2.0);
251 // todo: correct range-height function
252 double height = sin(deg2rad(ray->h.elev)) * far_dist;
253 glTexCoord2f(xscale, ((double)ri/sweep->h.nrays)*yscale);
254 glVertex3f(lx*far_dist, ly*far_dist, height);
257 //g_print("ri=%d, nr=%d, bw=%f\n", _ri, sweep->h.nrays, sweep->h.beam_width);
261 //glTexCoord2d( 0., 0.); glVertex3f(-500., 0., 0.); // bot left
262 //glTexCoord2d( 0., 1.); glVertex3f(-500., 500., 0.); // top left
263 //glTexCoord2d( 1., 1.); glVertex3f( 0., 500., 3.); // top right
264 //glTexCoord2d( 1., 0.); glVertex3f( 0., 0., 3.); // bot right
268 void aweather_level2_hide(GritsObject *_level2, gboolean hidden)
270 AWeatherLevel2 *level2 = AWEATHER_LEVEL2(_level2);
272 grits_object_hide(GRITS_OBJECT(level2->volume), hidden);
279 static gboolean _set_sweep_cb(gpointer _level2)
281 g_debug("AWeatherLevel2: _set_sweep_cb");
282 AWeatherLevel2 *level2 = _level2;
283 _load_sweep_gl(level2);
284 grits_object_queue_draw(_level2);
285 g_object_unref(level2);
288 void aweather_level2_set_sweep(AWeatherLevel2 *level2,
289 int type, float elev)
291 g_debug("AWeatherLevel2: set_sweep - %d %f", type, elev);
294 Volume *volume = RSL_get_volume(level2->radar, type);
296 level2->sweep = RSL_get_closest_sweep(volume, elev, 90);
297 if (!level2->sweep) return;
300 level2->sweep_colors = NULL;
301 for (int i = 0; level2->colormap[i].file; i++)
302 if (level2->colormap[i].type == type)
303 level2->sweep_colors = &level2->colormap[i];
304 if (!level2->sweep_colors) {
305 g_warning("AWeatherLevel2: set_sweep - missing colormap[%d]", type);
306 level2->sweep_colors = &level2->colormap[0];
310 g_object_ref(level2);
311 g_idle_add(_set_sweep_cb, level2);
314 void aweather_level2_set_iso(AWeatherLevel2 *level2, gfloat level)
316 g_debug("AWeatherLevel2: set_iso - %f", level);
318 if (!level2->volume) {
319 g_debug("AWeatherLevel2: set_iso - creating new volume");
320 Volume *rvol = RSL_get_volume(level2->radar, DZ_INDEX);
321 VolGrid *grid = _load_grid(rvol);
322 GritsVolume *vol = grits_volume_new(grid);
323 vol->proj = GRITS_VOLUME_CARTESIAN;
324 vol->disp = GRITS_VOLUME_SURFACE;
325 GRITS_OBJECT(vol)->center = GRITS_OBJECT(level2)->center;
326 grits_viewer_add(GRITS_OBJECT(level2)->viewer,
327 GRITS_OBJECT(vol), GRITS_LEVEL_WORLD, TRUE);
328 level2->volume = vol;
330 if (ISO_MIN < level && level < ISO_MAX) {
331 guint8 *data = colormap_get(&level2->colormap[0], level);
332 level2->volume->color[0] = data[0];
333 level2->volume->color[1] = data[1];
334 level2->volume->color[2] = data[2];
335 level2->volume->color[3] = data[3];
336 grits_volume_set_level(level2->volume, level);
337 grits_object_hide(GRITS_OBJECT(level2->volume), FALSE);
339 grits_object_hide(GRITS_OBJECT(level2->volume), TRUE);
343 AWeatherLevel2 *aweather_level2_new(Radar *radar, AWeatherColormap *colormap)
345 g_debug("AWeatherLevel2: new - %s", radar->h.radar_name);
346 RSL_sort_radar(radar);
347 AWeatherLevel2 *level2 = g_object_new(AWEATHER_TYPE_LEVEL2, NULL);
348 level2->radar = radar;
349 level2->colormap = colormap;
350 aweather_level2_set_sweep(level2, DZ_INDEX, 0);
353 Radar_header *h = &radar->h;
354 center.lat = (double)h->latd + (double)h->latm/60 + (double)h->lats/(60*60);
355 center.lon = (double)h->lond + (double)h->lonm/60 + (double)h->lons/(60*60);
356 center.elev = h->height;
357 GRITS_OBJECT(level2)->center = center;
361 AWeatherLevel2 *aweather_level2_new_from_file(const gchar *file, const gchar *site,
362 AWeatherColormap *colormap)
364 g_debug("AWeatherLevel2: new_from_file %s %s", site, file);
366 /* Decompress radar */
367 gchar *raw = g_strconcat(file, ".raw", NULL);
368 if (g_file_test(raw, G_FILE_TEST_EXISTS)) {
369 struct stat files, raws;
370 g_stat(file, &files);
372 if (files.st_mtime > raws.st_mtime)
373 if (!_decompress_radar(file, raw))
376 if (!_decompress_radar(file, raw))
380 /* Load the radar file */
381 RSL_read_these_sweeps("all", NULL);
382 g_message("read start");
383 Radar *radar = RSL_wsr88d_to_radar(raw, (gchar*)site);
384 g_message("read done");
389 return aweather_level2_new(radar, colormaps);
392 static void _on_sweep_clicked(GtkRadioButton *button, gpointer _level2)
394 AWeatherLevel2 *level2 = _level2;
395 if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
396 gint type = (gint)g_object_get_data(G_OBJECT(button), "type");
397 gint elev = (gint)g_object_get_data(G_OBJECT(button), "elev");
398 aweather_level2_set_sweep(level2, type, (float)elev/100);
399 //level2->colormap = level2->sweep_colors;
403 static void _on_iso_changed(GtkRange *range, gpointer _level2)
405 AWeatherLevel2 *level2 = _level2;
406 gfloat level = gtk_range_get_value(range);
407 aweather_level2_set_iso(level2, level);
410 GtkWidget *aweather_level2_get_config(AWeatherLevel2 *level2)
412 Radar *radar = level2->radar;
413 g_debug("AWeatherLevel2: get_config - %p, %p", level2, radar);
414 /* Clear existing items */
416 guint rows = 1, cols = 1, cur_cols;
417 gchar row_label_str[64], col_label_str[64], button_str[64];
418 GtkWidget *row_label, *col_label, *button = NULL, *elev_box = NULL;
419 GtkWidget *table = gtk_table_new(rows, cols, FALSE);
422 gchar *date_str = g_strdup_printf("<b><i>%04d-%02d-%02d %02d:%02d</i></b>",
423 radar->h.year, radar->h.month, radar->h.day,
424 radar->h.hour, radar->h.minute);
425 GtkWidget *date_label = gtk_label_new(date_str);
426 gtk_label_set_use_markup(GTK_LABEL(date_label), TRUE);
427 gtk_table_attach(GTK_TABLE(table), date_label,
428 0,1, 0,1, GTK_FILL,GTK_FILL, 5,0);
432 for (guint vi = 0; vi < radar->h.nvolumes; vi++) {
433 Volume *vol = radar->v[vi];
434 if (vol == NULL) continue;
435 rows++; cols = 1; elev = 0;
438 g_snprintf(row_label_str, 64, "<b>%s:</b>", vol->h.type_str);
439 row_label = gtk_label_new(row_label_str);
440 gtk_label_set_use_markup(GTK_LABEL(row_label), TRUE);
441 gtk_misc_set_alignment(GTK_MISC(row_label), 1, 0.5);
442 gtk_table_attach(GTK_TABLE(table), row_label,
443 0,1, rows-1,rows, GTK_FILL,GTK_FILL, 5,0);
445 for (guint si = 0; si < vol->h.nsweeps; si++) {
446 Sweep *sweep = vol->sweep[si];
447 if (sweep == NULL || sweep->h.elev == 0) continue;
448 if (sweep->h.elev != elev) {
450 elev = sweep->h.elev;
453 g_object_get(table, "n-columns", &cur_cols, NULL);
454 if (cols > cur_cols) {
455 g_snprintf(col_label_str, 64, "<b>%.2f°</b>", elev);
456 col_label = gtk_label_new(col_label_str);
457 gtk_label_set_use_markup(GTK_LABEL(col_label), TRUE);
458 gtk_widget_set_size_request(col_label, 50, -1);
459 gtk_table_attach(GTK_TABLE(table), col_label,
460 cols-1,cols, 0,1, GTK_FILL,GTK_FILL, 0,0);
463 elev_box = gtk_hbox_new(TRUE, 0);
464 gtk_table_attach(GTK_TABLE(table), elev_box,
465 cols-1,cols, rows-1,rows, GTK_FILL,GTK_FILL, 0,0);
470 g_snprintf(button_str, 64, "%3.2f", elev);
471 button = gtk_radio_button_new_with_label_from_widget(
472 GTK_RADIO_BUTTON(button), button_str);
473 gtk_widget_set_size_request(button, -1, 26);
474 //button = gtk_radio_button_new_from_widget(GTK_RADIO_BUTTON(button));
475 //gtk_widget_set_size_request(button, -1, 22);
476 g_object_set(button, "draw-indicator", FALSE, NULL);
477 gtk_box_pack_end(GTK_BOX(elev_box), button, TRUE, TRUE, 0);
479 g_object_set_data(G_OBJECT(button), "level2", (gpointer)level2);
480 g_object_set_data(G_OBJECT(button), "type", (gpointer)vi);
481 g_object_set_data(G_OBJECT(button), "elev", (gpointer)(int)(elev*100));
482 g_signal_connect(button, "clicked", G_CALLBACK(_on_sweep_clicked), level2);
486 /* Add Iso-surface volume */
487 g_object_get(table, "n-columns", &cols, NULL);
488 row_label = gtk_label_new("<b>Isosurface:</b>");
489 gtk_label_set_use_markup(GTK_LABEL(row_label), TRUE);
490 gtk_misc_set_alignment(GTK_MISC(row_label), 1, 0.5);
491 gtk_table_attach(GTK_TABLE(table), row_label,
492 0,1, rows,rows+1, GTK_FILL,GTK_FILL, 5,0);
493 GtkWidget *scale = gtk_hscale_new_with_range(ISO_MIN, ISO_MAX, 0.5);
494 gtk_widget_set_size_request(scale, -1, 26);
495 gtk_scale_set_value_pos(GTK_SCALE(scale), GTK_POS_LEFT);
496 gtk_range_set_inverted(GTK_RANGE(scale), TRUE);
497 gtk_range_set_value(GTK_RANGE(scale), ISO_MAX);
498 g_signal_connect(scale, "value-changed", G_CALLBACK(_on_iso_changed), level2);
499 gtk_table_attach(GTK_TABLE(table), scale,
500 1,cols+1, rows,rows+1, GTK_FILL|GTK_EXPAND,GTK_FILL, 0,0);
501 /* Shove all the buttons to the left, but keep the slider expanded */
502 gtk_table_attach(GTK_TABLE(table), gtk_label_new(""),
503 cols,cols+1, 0,1, GTK_FILL|GTK_EXPAND,GTK_FILL, 0,0);
510 G_DEFINE_TYPE(AWeatherLevel2, aweather_level2, GRITS_TYPE_OBJECT);
511 static void aweather_level2_init(AWeatherLevel2 *level2)
514 static void aweather_level2_dispose(GObject *_level2)
516 AWeatherLevel2 *level2 = AWEATHER_LEVEL2(_level2);
517 g_debug("AWeatherLevel2: dispose - %p", _level2);
518 if (level2->volume) {
519 grits_viewer_remove(GRITS_OBJECT(level2)->viewer, level2->volume);
520 level2->volume = NULL;
522 G_OBJECT_CLASS(aweather_level2_parent_class)->dispose(_level2);
524 static void aweather_level2_finalize(GObject *_level2)
526 AWeatherLevel2 *level2 = AWEATHER_LEVEL2(_level2);
527 g_debug("AWeatherLevel2: finalize - %p", _level2);
528 RSL_free_radar(level2->radar);
529 if (level2->sweep_tex)
530 glDeleteTextures(1, &level2->sweep_tex);
531 G_OBJECT_CLASS(aweather_level2_parent_class)->finalize(_level2);
533 static void aweather_level2_class_init(AWeatherLevel2Class *klass)
535 G_OBJECT_CLASS(klass)->dispose = aweather_level2_dispose;
536 G_OBJECT_CLASS(klass)->finalize = aweather_level2_finalize;
537 GRITS_OBJECT_CLASS(klass)->draw = aweather_level2_draw;
538 GRITS_OBJECT_CLASS(klass)->hide = aweather_level2_hide;