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 <grits.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                         guint  buf_i = (ri*max_bins+bi)*4;
  50                         float  value = ray->h.f(ray->range[bi]);
  51
  52                         /* Check for bad values */
  53                         if (value == BADVAL     || value == RFVAL      || value == APFLAG ||
  54                             value == NOTFOUND_H || value == NOTFOUND_V || value == NOECHO) {
  55                                 buf[buf_i+3] = 0x00; // transparent
  56                                 continue;
  57                         }
  58
  59                         /* Convert data value to index */
  60                         gint idx = value * colormap->scale + colormap->shift;
  61                         idx = CLAMP(idx, 0, colormap->len);
  62
  63                         /* Copy color to buffer */
  64                         buf[buf_i+0] = colormap->data[idx][0];
  65                         buf[buf_i+1] = colormap->data[idx][1];
  66                         buf[buf_i+2] = colormap->data[idx][2];
  67                         buf[buf_i+3] = colormap->data[idx][3]*0.75; // TESTING
  68                 }
  69         }
  70
  71         /* set output */
  72         *width  = max_bins;
  73         *height = sweep->h.nrays;
  74         *data   = buf;
  75 }
  76
  77 /* Load a sweep into an OpenGL texture */
  78 static void _load_sweep_gl(AWeatherLevel2 *self)
  79 {
  80         g_debug("AWeatherLevel2: _load_sweep_gl");
  81         guint8 *data;
  82         gint width, height;
  83         _bscan_sweep(self->sweep, self->sweep_colors, &data, &width, &height);
  84         gint tex_width  = pow(2, ceil(log(width )/log(2)));
  85         gint tex_height = pow(2, ceil(log(height)/log(2)));
  86         self->sweep_coords[0] = (double)width  / tex_width;
  87         self->sweep_coords[1] = (double)height / tex_height;
  88
  89         if (!self->sweep_tex)
  90                  glGenTextures(1, &self->sweep_tex);
  91         glBindTexture(GL_TEXTURE_2D, self->sweep_tex);
  92         glPixelStorei(GL_PACK_ALIGNMENT, 1);
  93         glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
  94         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, tex_width, tex_height, 0,
  95                         GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  96         glTexSubImage2D(GL_TEXTURE_2D, 0, 0,0, width,height,
  97                         GL_RGBA, GL_UNSIGNED_BYTE, data);
  98         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  99         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 100
 101         g_free(data);
 102 }
 103
 104 /* Decompress a radar file using wsr88dec */
 105 static gboolean _decompress_radar(const gchar *file, const gchar *raw)
 106 {
 107         g_debug("AWeatherLevel2: _decompress_radar - \n\t%s\n\t%s", file, raw);
 108         char *argv[] = {"wsr88ddec", (gchar*)file, (gchar*)raw, NULL};
 109         gint status;
 110         GError *error = NULL;
 111         g_spawn_sync(
 112                 NULL,    // const gchar *working_directory
 113                 argv,    // gchar **argv
 114                 NULL,    // gchar **envp
 115                 G_SPAWN_SEARCH_PATH, // GSpawnFlags flags
 116                 NULL,    // GSpawnChildSetupFunc child_setup
 117                 NULL,    // gpointer user_data
 118                 NULL,    // gchar *standard_output
 119                 NULL,    // gchar *standard_output
 120                 &status, // gint *exit_status
 121                 &error); // GError **error
 122         if (error) {
 123                 g_warning("AWeatherLevel2: _decompress_radar - %s", error->message);
 124                 g_error_free(error);
 125                 return FALSE;
 126         }
 127         if (status != 0) {
 128                 gchar *msg = g_strdup_printf("wsr88ddec exited with status %d", status);
 129                 g_warning("AWeatherLevel2: _decompress_radar - %s", msg);
 130                 g_free(msg);
 131                 return FALSE;
 132         }
 133         return TRUE;
 134 }
 135
 136
 137 /*********************
 138  * Drawing functions *
 139  *********************/
 140 void aweather_level2_draw(GritsObject *_self, GritsOpenGL *opengl)
 141 {
 142         AWeatherLevel2 *self = AWEATHER_LEVEL2(_self);
 143         if (!self->sweep || !self->sweep_tex)
 144                 return;
 145
 146         /* Draw wsr88d */
 147         Sweep *sweep = self->sweep;
 148         glDisable(GL_ALPHA_TEST);
 149         glDisable(GL_CULL_FACE);
 150         glDisable(GL_LIGHTING);
 151         glEnable(GL_TEXTURE_2D);
 152         glEnable(GL_POLYGON_OFFSET_FILL);
 153         glPolygonOffset(1.0, -2.0);
 154         glColor4f(1,1,1,1);
 155
 156         /* Draw the rays */
 157         gdouble xscale = self->sweep_coords[0];
 158         gdouble yscale = self->sweep_coords[1];
 159         glBindTexture(GL_TEXTURE_2D, self->sweep_tex);
 160         glBegin(GL_TRIANGLE_STRIP);
 161         for (int ri = 0; ri <= sweep->h.nrays; ri++) {
 162                 Ray  *ray = NULL;
 163                 double angle = 0;
 164                 if (ri < sweep->h.nrays) {
 165                         ray = sweep->ray[ri];
 166                         angle = deg2rad(ray->h.azimuth - ((double)ray->h.beam_width/2.));
 167                 } else {
 168                         /* Do the right side of the last sweep */
 169                         ray = sweep->ray[ri-1];
 170                         angle = deg2rad(ray->h.azimuth + ((double)ray->h.beam_width/2.));
 171                 }
 172
 173                 double lx = sin(angle);
 174                 double ly = cos(angle);
 175
 176                 double near_dist = ray->h.range_bin1 - ((double)ray->h.gate_size/2.);
 177                 double far_dist  = near_dist + (double)ray->h.nbins*ray->h.gate_size;
 178
 179                 /* (find middle of bin) / scale for opengl */
 180                 // near left
 181                 glTexCoord2f(0.0, ((double)ri/sweep->h.nrays)*yscale);
 182                 glVertex3f(lx*near_dist, ly*near_dist, 2.0);
 183
 184                 // far  left
 185                 // todo: correct range-height function
 186                 double height = sin(deg2rad(ray->h.elev)) * far_dist;
 187                 glTexCoord2f(xscale, ((double)ri/sweep->h.nrays)*yscale);
 188                 glVertex3f(lx*far_dist,  ly*far_dist, height);
 189         }
 190         glEnd();
 191         //g_print("ri=%d, nr=%d, bw=%f\n", _ri, sweep->h.nrays, sweep->h.beam_width);
 192
 193         /* Texture debug */
 194         //glBegin(GL_QUADS);
 195         //glTexCoord2d( 0.,  0.); glVertex3f(-500.,   0., 0.); // bot left
 196         //glTexCoord2d( 0.,  1.); glVertex3f(-500., 500., 0.); // top left
 197         //glTexCoord2d( 1.,  1.); glVertex3f( 0.,   500., 3.); // top right
 198         //glTexCoord2d( 1.,  0.); glVertex3f( 0.,     0., 3.); // bot right
 199         //glEnd();
 200 }
 201
 202
 203 /***********
 204  * Methods *
 205  ***********/
 206 static gboolean _set_sweep_cb(gpointer _self)
 207 {
 208         g_debug("AWeatherLevel2: _set_sweep_cb");
 209         AWeatherLevel2 *self = _self;
 210         _load_sweep_gl(self);
 211         grits_object_queue_draw(_self);
 212         g_object_unref(self);
 213         return FALSE;
 214 }
 215 void aweather_level2_set_sweep(AWeatherLevel2 *self,
 216                 int type, float elev)
 217 {
 218         g_debug("AWeatherLevel2: set_sweep - %d %f", type, elev);
 219
 220         /* Find sweep */
 221         Volume *volume = RSL_get_volume(self->radar, type);
 222         if (!volume) return;
 223         self->sweep = RSL_get_closest_sweep(volume, elev, 90);
 224         if (!self->sweep) return;
 225
 226         /* Find colormap */
 227         self->sweep_colors = NULL;
 228         for (int i = 0; self->colormap[i].file; i++)
 229                 if (self->colormap[i].type == type)
 230                         self->sweep_colors = &self->colormap[i];
 231         if (!self->sweep_colors) {
 232                 g_warning("AWeatherLevel2: set_sweep - missing colormap[%d]", type);
 233                 self->sweep_colors = &self->colormap[0];
 234         }
 235
 236         /* Load data */
 237         g_object_ref(self);
 238         g_idle_add(_set_sweep_cb, self);
 239 }
 240
 241 AWeatherLevel2 *aweather_level2_new(Radar *radar, AWeatherColormap *colormap)
 242 {
 243         g_debug("AWeatherLevel2: new - %s", radar->h.radar_name);
 244         AWeatherLevel2 *self = g_object_new(AWEATHER_TYPE_LEVEL2, NULL);
 245         self->radar    = radar;
 246         self->colormap = colormap;
 247         aweather_level2_set_sweep(self, DZ_INDEX, 0);
 248
 249         GritsPoint center;
 250         Radar_header *h = &radar->h;
 251         center.lat  = (double)h->latd + (double)h->latm/60 + (double)h->lats/(60*60);
 252         center.lon  = (double)h->lond + (double)h->lonm/60 + (double)h->lons/(60*60);
 253         center.elev = h->height;
 254         GRITS_OBJECT(self)->center = center;
 255         return self;
 256 }
 257
 258 AWeatherLevel2 *aweather_level2_new_from_file(const gchar *file, const gchar *site,
 259                 AWeatherColormap *colormap)
 260 {
 261         g_debug("AWeatherLevel2: new_from_file %s %s", site, file);
 262
 263         /* Decompress radar */
 264         gchar *raw = g_strconcat(file, ".raw", NULL);
 265         if (g_file_test(raw, G_FILE_TEST_EXISTS)) {
 266                 struct stat files, raws;
 267                 g_stat(file, &files);
 268                 g_stat(raw,  &raws);
 269                 if (files.st_mtime > raws.st_mtime)
 270                         if (!_decompress_radar(file, raw))
 271                                 return NULL;
 272         } else {
 273                 if (!_decompress_radar(file, raw))
 274                         return NULL;
 275         }
 276
 277         /* Load the radar file */
 278         RSL_read_these_sweeps("all", NULL);
 279         g_message("read start");
 280         Radar *radar = RSL_wsr88d_to_radar(raw, (gchar*)site);
 281         g_message("read done");
 282         g_free(raw);
 283         if (!radar)
 284                 return NULL;
 285
 286         return aweather_level2_new(radar, colormaps);
 287 }
 288
 289 static void _on_sweep_clicked(GtkRadioButton *button, gpointer _level2)
 290 {
 291         AWeatherLevel2 *level2 = _level2;
 292         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(button))) {
 293                 gint type = (gint)g_object_get_data(G_OBJECT(button), "type");
 294                 gint elev = (gint)g_object_get_data(G_OBJECT(button), "elev");
 295                 aweather_level2_set_sweep(level2, type, (float)elev/100);
 296                 //self->colormap = level2->sweep_colors;
 297         }
 298 }
 299
 300 GtkWidget *aweather_level2_get_config(AWeatherLevel2 *level2)
 301 {
 302         Radar *radar = level2->radar;
 303         g_debug("AWeatherLevel2: get_config - %p, %p", level2, radar);
 304         /* Clear existing items */
 305         gfloat elev;
 306         guint rows = 1, cols = 1, cur_cols;
 307         gchar row_label_str[64], col_label_str[64], button_str[64];
 308         GtkWidget *row_label, *col_label, *button = NULL, *elev_box = NULL;
 309         GtkWidget *table = gtk_table_new(rows, cols, FALSE);
 310
 311         /* Add date */
 312         gchar *date_str = g_strdup_printf("<b><i>%04d-%02d-%02d %02d:%02d</i></b>",
 313                         radar->h.year, radar->h.month, radar->h.day,
 314                         radar->h.hour, radar->h.minute);
 315         GtkWidget *date_label = gtk_label_new(date_str);
 316         gtk_label_set_use_markup(GTK_LABEL(date_label), TRUE);
 317         gtk_table_attach(GTK_TABLE(table), date_label,
 318                         0,1, 0,1, GTK_FILL,GTK_FILL, 5,0);
 319         g_free(date_str);
 320
 321         for (guint vi = 0; vi < radar->h.nvolumes; vi++) {
 322                 Volume *vol = radar->v[vi];
 323                 if (vol == NULL) continue;
 324                 rows++; cols = 1; elev = 0;
 325
 326                 /* Row label */
 327                 g_snprintf(row_label_str, 64, "<b>%s:</b>", vol->h.type_str);
 328                 row_label = gtk_label_new(row_label_str);
 329                 gtk_label_set_use_markup(GTK_LABEL(row_label), TRUE);
 330                 gtk_misc_set_alignment(GTK_MISC(row_label), 1, 0.5);
 331                 gtk_table_attach(GTK_TABLE(table), row_label,
 332                                 0,1, rows-1,rows, GTK_FILL,GTK_FILL, 5,0);
 333
 334                 for (guint si = 0; si < vol->h.nsweeps; si++) {
 335                         Sweep *sweep = vol->sweep[si];
 336                         if (sweep == NULL || sweep->h.elev == 0) continue;
 337                         if (sweep->h.elev != elev) {
 338                                 cols++;
 339                                 elev = sweep->h.elev;
 340
 341                                 /* Column label */
 342                                 g_object_get(table, "n-columns", &cur_cols, NULL);
 343                                 if (cols >  cur_cols) {
 344                                         g_snprintf(col_label_str, 64, "<b>%.2f°</b>", elev);
 345                                         col_label = gtk_label_new(col_label_str);
 346                                         gtk_label_set_use_markup(GTK_LABEL(col_label), TRUE);
 347                                         gtk_widget_set_size_request(col_label, 50, -1);
 348                                         gtk_table_attach(GTK_TABLE(table), col_label,
 349                                                         cols-1,cols, 0,1, GTK_FILL,GTK_FILL, 0,0);
 350                                 }
 351
 352                                 elev_box = gtk_hbox_new(TRUE, 0);
 353                                 gtk_table_attach(GTK_TABLE(table), elev_box,
 354                                                 cols-1,cols, rows-1,rows, GTK_FILL,GTK_FILL, 0,0);
 355                         }
 356
 357
 358                         /* Button */
 359                         g_snprintf(button_str, 64, "%3.2f", elev);
 360                         button = gtk_radio_button_new_with_label_from_widget(
 361                                         GTK_RADIO_BUTTON(button), button_str);
 362                         gtk_widget_set_size_request(button, -1, 26);
 363                         //button = gtk_radio_button_new_from_widget(GTK_RADIO_BUTTON(button));
 364                         //gtk_widget_set_size_request(button, -1, 22);
 365                         g_object_set(button, "draw-indicator", FALSE, NULL);
 366                         gtk_box_pack_end(GTK_BOX(elev_box), button, TRUE, TRUE, 0);
 367
 368                         g_object_set_data(G_OBJECT(button), "level2", (gpointer)level2);
 369                         g_object_set_data(G_OBJECT(button), "type",   (gpointer)vi);
 370                         g_object_set_data(G_OBJECT(button), "elev",   (gpointer)(int)(elev*100));
 371                         g_signal_connect(button, "clicked", G_CALLBACK(_on_sweep_clicked), level2);
 372                 }
 373         }
 374         return table;
 375 }
 376
 377 /****************
 378  * GObject code *
 379  ****************/
 380 G_DEFINE_TYPE(AWeatherLevel2, aweather_level2, GRITS_TYPE_OBJECT);
 381 static void aweather_level2_init(AWeatherLevel2 *self)
 382 {
 383 }
 384 static void aweather_level2_finalize(GObject *_self)
 385 {
 386         AWeatherLevel2 *self = AWEATHER_LEVEL2(_self);
 387         g_debug("AWeatherLevel2: finalize - %p", _self);
 388         RSL_free_radar(self->radar);
 389         if (self->sweep_tex)
 390                 glDeleteTextures(1, &self->sweep_tex);
 391         G_OBJECT_CLASS(aweather_level2_parent_class)->finalize(_self);
 392 }
 393 static void aweather_level2_class_init(AWeatherLevel2Class *klass)
 394 {
 395         G_OBJECT_CLASS(klass)->finalize = aweather_level2_finalize;
 396         GRITS_OBJECT_CLASS(klass)->draw   = aweather_level2_draw;
 397 }