Pileus Git - aweather/blob - src/plugins/level2.c

   1 /*
   2  * Copyright (C) 2009-2010 Andy Spencer <andy753421@gmail.com>
   3  *
   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.
   8  *
   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.
  13  *
  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/>.
  16  */
  17
  18 #include <config.h>
  19 #include <math.h>
  20 #include <GL/gl.h>
  21 #include <glib/gstdio.h>
  22 #include <gis.h>
  23 #include <rsl.h>
  24
  25 #include "level2.h"
  26
  27
  28 /**************************
  29  * Data loading functions *
  30  **************************/
  31 /* Convert a sweep to an 2d array of data points */
  32 static void _bscan_sweep(Sweep *sweep, AWeatherColormap *colormap,
  33                 guint8 **data, int *width, int *height)
  34 {
  35         g_debug("AWeatherLevel2: _bscan_sweep - %p, %p, %p",
  36                         sweep, colormap, data);
  37         /* Calculate max number of bins */
  38         int max_bins = 0;
  39         for (int i = 0; i < sweep->h.nrays; i++)
  40                 max_bins = MAX(max_bins, sweep->ray[i]->h.nbins);
  41
  42         /* Allocate buffer using max number of bins for each ray */
  43         guint8 *buf = g_malloc0(sweep->h.nrays * max_bins * 4);
  44
  45         /* Fill the data */
  46         for (int ri = 0; ri < sweep->h.nrays; ri++) {
  47                 Ray *ray  = sweep->ray[ri];
  48                 for (int bi = 0; bi < ray->h.nbins; bi++) {
  49                         /* copy RGBA into buffer */
  50                         //guint val   = dz_f(ray->range[bi]);
  51                         guint8 val   = (guint8)ray->h.f(ray->range[bi]);
  52                         guint  buf_i = (ri*max_bins+bi)*4;
  53                         buf[buf_i+0] = colormap->data[val][0];
  54                         buf[buf_i+1] = colormap->data[val][1];
  55                         buf[buf_i+2] = colormap->data[val][2];
  56                         buf[buf_i+3] = colormap->data[val][3]*0.75; // TESTING
  57                         if (val == BADVAL     || val == RFVAL      || val == APFLAG ||
  58                             val == NOTFOUND_H || val == NOTFOUND_V || val == NOECHO) {
  59                                 buf[buf_i+3] = 0x00; // transparent
  60                         }
  61                 }
  62         }
  63
  64         /* set output */
  65         *width  = max_bins;
  66         *height = sweep->h.nrays;
  67         *data   = buf;
  68 }
  69
  70 /* Load a sweep into an OpenGL texture */
  71 static void _load_sweep_gl(AWeatherLevel2 *self)
  72 {
  73         g_debug("AWeatherLevel2: _load_sweep_gl");
  74         guint8 *data;
  75         gint width, height;
  76         _bscan_sweep(self->sweep, self->sweep_colors, &data, &width, &height);
  77         gint tex_width  = pow(2, ceil(log(width )/log(2)));
  78         gint tex_height = pow(2, ceil(log(height)/log(2)));
  79         self->sweep_coords[0] = (double)width  / tex_width;
  80         self->sweep_coords[1] = (double)height / tex_height;
  81
  82         if (!self->sweep_tex)
  83                  glGenTextures(1, &self->sweep_tex);
  84         glBindTexture(GL_TEXTURE_2D, self->sweep_tex);
  85         glPixelStorei(GL_PACK_ALIGNMENT, 1);
  86         glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
  87         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, tex_width, tex_height, 0,
  88                         GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  89         glTexSubImage2D(GL_TEXTURE_2D, 0, 0,0, width,height,
  90                         GL_RGBA, GL_UNSIGNED_BYTE, data);
  91         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  92         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  93
  94         g_free(data);
  95 }
  96
  97 /* Decompress a radar file using wsr88dec */
  98 static gboolean _decompress_radar(const gchar *file, const gchar *raw)
  99 {
 100         g_debug("AWeatherLevel2: _decompress_radar - \n\t%s\n\t%s", file, raw);
 101         char *argv[] = {"wsr88ddec", (gchar*)file, (gchar*)raw, NULL};
 102         gint status;
 103         GError *error = NULL;
 104         g_spawn_sync(
 105                 NULL,    // const gchar *working_directory
 106                 argv,    // gchar **argv
 107                 NULL,    // gchar **envp
 108                 G_SPAWN_SEARCH_PATH, // GSpawnFlags flags
 109                 NULL,    // GSpawnChildSetupFunc child_setup
 110                 NULL,    // gpointer user_data
 111                 NULL,    // gchar *standard_output
 112                 NULL,    // gchar *standard_output
 113                 &status, // gint *exit_status
 114                 &error); // GError **error
 115         if (error) {
 116                 g_warning("AWeatherLevel2: _decompress_radar - %s", error->message);
 117                 g_error_free(error);
 118                 return FALSE;
 119         }
 120         if (status != 0) {
 121                 gchar *msg = g_strdup_printf("wsr88ddec exited with status %d", status);
 122                 g_warning("AWeatherLevel2: _decompress_radar - %s", msg);
 123                 g_free(msg);
 124                 return FALSE;
 125         }
 126         return TRUE;
 127 }
 128
 129
 130 /*********************
 131  * Drawing functions *
 132  *********************/
 133 static void _draw_radar(GisCallback *_self, gpointer _viewer)
 134 {
 135         AWeatherLevel2 *self = AWEATHER_LEVEL2(_self);
 136         if (!self->sweep || !self->sweep_tex)
 137                 return;
 138
 139         /* Draw wsr88d */
 140         Sweep *sweep = self->sweep;
 141         Radar_header *h = &self->radar->h;
 142         gdouble lat  = (double)h->latd + (double)h->latm/60 + (double)h->lats/(60*60);
 143         gdouble lon  = (double)h->lond + (double)h->lonm/60 + (double)h->lons/(60*60);
 144         gdouble elev = h->height;
 145         gis_viewer_center_position(self->viewer, lat, lon, elev);
 146
 147         glDisable(GL_ALPHA_TEST);
 148         glDisable(GL_CULL_FACE);
 149         glDisable(GL_LIGHTING);
 150         glEnable(GL_TEXTURE_2D);
 151         glEnable(GL_POLYGON_OFFSET_FILL);
 152         glPolygonOffset(1.0, -2.0);
 153         glColor4f(1,1,1,1);
 154
 155         /* Draw the rays */
 156         gdouble xscale = self->sweep_coords[0];
 157         gdouble yscale = self->sweep_coords[1];
 158         glBindTexture(GL_TEXTURE_2D, self->sweep_tex);
 159         glBegin(GL_TRIANGLE_STRIP);
 160         for (int ri = 0; ri <= sweep->h.nrays; ri++) {
 161                 Ray  *ray = NULL;
 162                 double angle = 0;
 163                 if (ri < sweep->h.nrays) {
 164                         ray = sweep->ray[ri];
 165                         angle = deg2rad(ray->h.azimuth - ((double)ray->h.beam_width/2.));
 166                 } else {
 167                         /* Do the right side of the last sweep */
 168                         ray = sweep->ray[ri-1];
 169                         angle = deg2rad(ray->h.azimuth + ((double)ray->h.beam_width/2.));
 170                 }
 171
 172                 double lx = sin(angle);
 173                 double ly = cos(angle);
 174
 175                 double near_dist = ray->h.range_bin1;
 176                 double far_dist  = ray->h.nbins*ray->h.gate_size + ray->h.range_bin1;
 177
 178                 /* (find middle of bin) / scale for opengl */
 179                 // near left
 180                 glTexCoord2f(0.0, ((double)ri/sweep->h.nrays)*yscale);
 181                 glVertex3f(lx*near_dist, ly*near_dist, 2.0);
 182
 183                 // far  left
 184                 // todo: correct range-height function
 185                 double height = sin(deg2rad(ray->h.elev)) * far_dist;
 186                 glTexCoord2f(xscale, ((double)ri/sweep->h.nrays)*yscale);
 187                 glVertex3f(lx*far_dist,  ly*far_dist, height);
 188         }
 189         glEnd();
 190         //g_print("ri=%d, nr=%d, bw=%f\n", _ri, sweep->h.nrays, sweep->h.beam_width);
 191
 192         /* Texture debug */
 193         //glBegin(GL_QUADS);
 194         //glTexCoord2d( 0.,  0.); glVertex3f(-500.,   0., 0.); // bot left
 195         //glTexCoord2d( 0.,  1.); glVertex3f(-500., 500., 0.); // top left
 196         //glTexCoord2d( 1.,  1.); glVertex3f( 0.,   500., 3.); // top right
 197         //glTexCoord2d( 1.,  0.); glVertex3f( 0.,     0., 3.); // bot right
 198         //glEnd();
 199 }
 200
 201
 202 /***********
 203  * Methods *
 204  ***********/
 205 static gboolean _set_sweep_cb(gpointer _self)
 206 {
 207         g_debug("AWeatherLevel2: _set_sweep_cb");
 208         AWeatherLevel2 *self = _self;
 209         _load_sweep_gl(self);
 210         gtk_widget_queue_draw(GTK_WIDGET(self->viewer));
 211         g_object_unref(self);
 212         return FALSE;
 213 }
 214 void aweather_level2_set_sweep(AWeatherLevel2 *self,
 215                 int type, float elev)
 216 {
 217         g_debug("AWeatherLevel2: set_sweep - %d %f", type, elev);
 218
 219         /* Find sweep */
 220         Volume *volume = RSL_get_volume(self->radar, type);
 221         if (!volume) return;
 222         self->sweep = RSL_get_closest_sweep(volume, elev, 90);
 223         if (!self->sweep) return;
 224
 225         /* Find colormap */
 226         self->sweep_colors = NULL;
 227         for (int i = 0; self->colormap[i].name; i++)
 228                 if (self->colormap[i].type == type)
 229                         self->sweep_colors = &self->colormap[i];
 230         if (!self->sweep_colors) return;
 231
 232         /* Load data */
 233         g_object_ref(self);
 234         g_idle_add(_set_sweep_cb, self);
 235 }
 236
 237 AWeatherLevel2 *aweather_level2_new(GisViewer *viewer,
 238                 AWeatherColormap *colormap, Radar *radar)
 239 {
 240         g_debug("AWeatherLevel2: new - %s", radar->h.radar_name);
 241         AWeatherLevel2 *self = g_object_new(AWEATHER_TYPE_LEVEL2, NULL);
 242         self->viewer   = viewer;
 243         self->radar    = radar;
 244         self->colormap = colormap;
 245         aweather_level2_set_sweep(self, DZ_INDEX, 0);
 246         return self;
 247 }
 248
 249 AWeatherLevel2 *aweather_level2_new_from_file(GisViewer *viewer,
 250                 AWeatherColormap *colormap,
 251                 const gchar *file, const gchar *site)
 252 {
 253         g_debug("AWeatherLevel2: new_from_file %s %s", site, file);
 254
 255         /* Decompress radar */
 256         gchar *raw = g_strconcat(file, ".raw", NULL);
 257         if (g_file_test(raw, G_FILE_TEST_EXISTS)) {
 258                 struct stat files, raws;
 259                 g_stat(file, &files);
 260                 g_stat(raw,  &raws);
 261                 if (files.st_mtime > raws.st_mtime)
 262                         if (!_decompress_radar(file, raw))
 263                                 return NULL;
 264         } else {
 265                 if (!_decompress_radar(file, raw))
 266                         return NULL;
 267         }
 268
 269         /* Load the radar file */
 270         RSL_read_these_sweeps("all", NULL);
 271         g_message("read start");
 272         Radar *radar = RSL_wsr88d_to_radar(raw, (gchar*)site);
 273         g_message("read done");
 274         g_free(raw);
 275         if (!radar)
 276                 return NULL;
 277
 278         return aweather_level2_new(viewer, colormaps, radar);
 279 }
 280
 281 static void _on_sweep_clicked(GtkRadioButton *button, gpointer _level2)
 282 {
 283         AWeatherLevel2 *level2 = _level2;
 284         gint type = (gint)g_object_get_data(G_OBJECT(button), "type");
 285         gint elev = (gint)g_object_get_data(G_OBJECT(button), "elev");
 286         aweather_level2_set_sweep(level2, type, (float)elev/100);
 287         //self->colormap = level2->sweep_colors;
 288 }
 289
 290 GtkWidget *aweather_level2_get_config(AWeatherLevel2 *level2)
 291 {
 292         Radar *radar = level2->radar;
 293         g_debug("AWeatherLevel2: get_config - %p, %p", level2, radar);
 294         /* Clear existing items */
 295         gdouble elev;
 296         guint rows = 1, cols = 1, cur_cols;
 297         gchar row_label_str[64], col_label_str[64], button_str[64];
 298         GtkWidget *row_label, *col_label, *button = NULL, *elev_box = NULL;
 299         GtkWidget *table = gtk_table_new(rows, cols, FALSE);
 300
 301         /* Add date */
 302         gchar *date_str = g_strdup_printf("<b><i>%04d-%02d-%02d %02d:%02d</i></b>",
 303                         radar->h.year, radar->h.month, radar->h.day,
 304                         radar->h.hour, radar->h.minute);
 305         GtkWidget *date_label = gtk_label_new(date_str);
 306         gtk_label_set_use_markup(GTK_LABEL(date_label), TRUE);
 307         gtk_table_attach(GTK_TABLE(table), date_label,
 308                         0,1, 0,1, GTK_FILL,GTK_FILL, 5,0);
 309         g_free(date_str);
 310
 311         for (guint vi = 0; vi < radar->h.nvolumes; vi++) {
 312                 Volume *vol = radar->v[vi];
 313                 if (vol == NULL) continue;
 314                 rows++; cols = 1; elev = 0;
 315
 316                 /* Row label */
 317                 g_snprintf(row_label_str, 64, "<b>%s:</b>", vol->h.type_str);
 318                 row_label = gtk_label_new(row_label_str);
 319                 gtk_label_set_use_markup(GTK_LABEL(row_label), TRUE);
 320                 gtk_misc_set_alignment(GTK_MISC(row_label), 1, 0.5);
 321                 gtk_table_attach(GTK_TABLE(table), row_label,
 322                                 0,1, rows-1,rows, GTK_FILL,GTK_FILL, 5,0);
 323
 324                 for (guint si = 0; si < vol->h.nsweeps; si++) {
 325                         Sweep *sweep = vol->sweep[si];
 326                         if (sweep == NULL || sweep->h.elev == 0) continue;
 327                         if (sweep->h.elev != elev) {
 328                                 cols++;
 329                                 elev = sweep->h.elev;
 330
 331                                 /* Column label */
 332                                 g_object_get(table, "n-columns", &cur_cols, NULL);
 333                                 if (cols >  cur_cols) {
 334                                         g_snprintf(col_label_str, 64, "<b>%.2f°</b>", elev);
 335                                         col_label = gtk_label_new(col_label_str);
 336                                         gtk_label_set_use_markup(GTK_LABEL(col_label), TRUE);
 337                                         gtk_widget_set_size_request(col_label, 50, -1);
 338                                         gtk_table_attach(GTK_TABLE(table), col_label,
 339                                                         cols-1,cols, 0,1, GTK_FILL,GTK_FILL, 0,0);
 340                                 }
 341
 342                                 elev_box = gtk_hbox_new(TRUE, 0);
 343                                 gtk_table_attach(GTK_TABLE(table), elev_box,
 344                                                 cols-1,cols, rows-1,rows, GTK_FILL,GTK_FILL, 0,0);
 345                         }
 346
 347
 348                         /* Button */
 349                         g_snprintf(button_str, 64, "%3.2f", elev);
 350                         button = gtk_radio_button_new_with_label_from_widget(
 351                                         GTK_RADIO_BUTTON(button), button_str);
 352                         gtk_widget_set_size_request(button, -1, 26);
 353                         //button = gtk_radio_button_new_from_widget(GTK_RADIO_BUTTON(button));
 354                         //gtk_widget_set_size_request(button, -1, 22);
 355                         g_object_set(button, "draw-indicator", FALSE, NULL);
 356                         gtk_box_pack_end(GTK_BOX(elev_box), button, TRUE, TRUE, 0);
 357
 358                         g_object_set_data(G_OBJECT(button), "level2", (gpointer)level2);
 359                         g_object_set_data(G_OBJECT(button), "type",   (gpointer)vi);
 360                         g_object_set_data(G_OBJECT(button), "elev",   (gpointer)(int)(elev*100));
 361                         g_signal_connect(button, "clicked", G_CALLBACK(_on_sweep_clicked), level2);
 362                 }
 363         }
 364         return table;
 365 }
 366
 367 /****************
 368  * GObject code *
 369  ****************/
 370 G_DEFINE_TYPE(AWeatherLevel2, aweather_level2, GIS_TYPE_CALLBACK);
 371 static void aweather_level2_init(AWeatherLevel2 *self)
 372 {
 373         GIS_CALLBACK(self)->callback  = _draw_radar;
 374         GIS_CALLBACK(self)->user_data = self;
 375 }
 376 static void aweather_level2_dispose(GObject *_self)
 377 {
 378         g_debug("AWeatherLevel2: dispose - %p", _self);
 379         G_OBJECT_CLASS(aweather_level2_parent_class)->dispose(_self);
 380 }
 381 static void aweather_level2_finalize(GObject *_self)
 382 {
 383         AWeatherLevel2 *self = AWEATHER_LEVEL2(_self);
 384         g_debug("AWeatherLevel2: finalize - %p", _self);
 385         RSL_free_radar(self->radar);
 386         if (self->sweep_tex)
 387                 glDeleteTextures(1, &self->sweep_tex);
 388         G_OBJECT_CLASS(aweather_level2_parent_class)->finalize(_self);
 389 }
 390 static void aweather_level2_class_init(AWeatherLevel2Class *klass)
 391 {
 392         G_OBJECT_CLASS(klass)->finalize = aweather_level2_finalize;
 393         G_OBJECT_CLASS(klass)->dispose  = aweather_level2_dispose;
 394 }