From: Andy Spencer Date: Sat, 1 May 2010 00:47:13 +0000 (+0000) Subject: Add Conus tile to radar plugin X-Git-Tag: v0.4~29 X-Git-Url: http://pileus.org/git/?p=aweather;a=commitdiff_plain;h=64a0e8ce449d43038f3d561463b03d1b31019852 Add Conus tile to radar plugin Conus tile lads a semi-high resolution reflectivity image of the Conus and overlays it on the surface of the earth when zoomed out. --- diff --git a/src/plugins/radar.c b/src/plugins/radar.c index 3b566a5..2b39dd6 100644 --- a/src/plugins/radar.c +++ b/src/plugins/radar.c @@ -319,6 +319,179 @@ void radar_site_free(RadarSite *site) } +/************** + * RadarConus * + **************/ +struct _RadarConus { + GisViewer *viewer; + GisTile *tile; + GisHttp *http; + GtkWidget *config; + time_t time; + GdkPixbuf *pixbuf; + gchar *message; + gchar *nearest; +}; + +void _conus_update_loading(gchar *file, goffset cur, + goffset total, gpointer _conus) +{ + RadarConus *conus = _conus; + GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(conus->config)); + double percent = (double)cur/total; + gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0)); + gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)", + percent*100, (double)cur/1000000, (double)total/1000000); + gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg); + g_free(msg); +} + +gboolean _conus_update_end(gpointer _conus) +{ + RadarConus *conus = _conus; + + guchar *pixels = gdk_pixbuf_get_pixels(conus->pixbuf); + gboolean alpha = gdk_pixbuf_get_has_alpha(conus->pixbuf); + gint width = gdk_pixbuf_get_width(conus->pixbuf); + gint height = gdk_pixbuf_get_height(conus->pixbuf); + + if (!conus->tile->data) { + conus->tile->data = g_new0(guint, 1); + glGenTextures(1, conus->tile->data); + } + + guint *tex = conus->tile->data; + glBindTexture(GL_TEXTURE_2D, *tex); + + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + glPixelStorei(GL_PACK_ALIGNMENT, 1); + glTexImage2D(GL_TEXTURE_2D, 0, 4, width, height, 0, + (alpha ? GL_RGBA : GL_RGB), GL_UNSIGNED_BYTE, pixels); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); + glFlush(); + + /* finish */ + _gtk_bin_set_child(GTK_BIN(conus->config), + gtk_label_new(conus->nearest)); + gtk_widget_queue_draw(GTK_WIDGET(conus->viewer)); + g_object_unref(conus->pixbuf); + + return FALSE; +} + +gpointer _conus_update_thread(gpointer _conus) +{ + RadarConus *conus = _conus; + + /* Find nearest */ + gboolean offline = gis_viewer_get_offline(conus->viewer); + gchar *conus_url = "http://radar.weather.gov/Conus/RadarImg/"; + GList *files = gis_http_available(conus->http, + "^Conus_[^\"]*_N0Ronly.gif$", "", + NULL, (offline ? NULL : conus_url)); + conus->nearest = _find_nearest(conus->time, files, 6, "%Y%m%d_%H%M"); + g_list_foreach(files, (GFunc)g_free, NULL); + g_list_free(files); + if (!conus->nearest) { + conus->message = "No suitable files"; + goto out; + } + + /* Fetch the image */ + gchar *uri = g_strconcat(conus_url, conus->nearest, NULL); + gchar *path = gis_http_fetch(conus->http, uri, conus->nearest, GIS_ONCE, + _conus_update_loading, conus); + if (!path) { + conus->message = "Fetch failed"; + goto out; + } + + /* Load the image to a pixbuf */ + GError *error = NULL; + conus->pixbuf = gdk_pixbuf_new_from_file(path, &error); + if (!gdk_pixbuf_get_has_alpha(conus->pixbuf)) { + GdkPixbuf *tmp = gdk_pixbuf_add_alpha(conus->pixbuf, TRUE, 0xff, 0xff, 0xff); + g_object_unref(conus->pixbuf); + conus->pixbuf = tmp; + } + + /* Map the pixbuf's alpha values */ + const guchar colormap[][2][4] = { + {{0x04, 0xe9, 0xe7}, {0x04, 0xe9, 0xe7, 0x30}}, + {{0x01, 0x9f, 0xf4}, {0x01, 0x9f, 0xf4, 0x60}}, + {{0x03, 0x00, 0xf4}, {0x03, 0x00, 0xf4, 0x90}}, + }; + guchar *pixels = gdk_pixbuf_get_pixels(conus->pixbuf); + gint height = gdk_pixbuf_get_height(conus->pixbuf); + gint width = gdk_pixbuf_get_width(conus->pixbuf); + for (int i = 0; i < width*height; i++) { + for (int j = 0; j < G_N_ELEMENTS(colormap); j++) { + if (pixels[i*4+0] > 0xe0 && + pixels[i*4+1] > 0xe0 && + pixels[i*4+2] > 0xe0) { + pixels[i*4+3] = 0x00; + break; + } + if (pixels[i*4+0] == colormap[j][0][0] && + pixels[i*4+1] == colormap[j][0][1] && + pixels[i*4+2] == colormap[j][0][2]) { + pixels[i*4+0] = colormap[j][1][0]; + pixels[i*4+1] = colormap[j][1][1]; + pixels[i*4+2] = colormap[j][1][2]; + pixels[i*4+3] = colormap[j][1][3]; + break; + } + } + } + +out: + g_idle_add(_conus_update_end, conus); + return NULL; +} + +void _conus_update(RadarConus *conus) +{ + conus->time = gis_viewer_get_time(conus->viewer); + g_debug("GisPluginRadar: _conus_update - %d", + (gint)conus->time); + + /* Add a progress bar */ + GtkWidget *progress = gtk_progress_bar_new(); + gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading..."); + _gtk_bin_set_child(GTK_BIN(conus->config), progress); + + g_thread_create(_conus_update_thread, conus, FALSE, NULL); +} + +RadarConus *radar_conus_new(GtkWidget *pconfig, + GisViewer *viewer, GisHttp *http) +{ + RadarConus *conus = g_new0(RadarConus, 1); + conus->viewer = g_object_ref(viewer); + conus->http = http; + conus->config = gtk_alignment_new(0, 0, 1, 1); + conus->tile = gis_tile_new(NULL, + 50.406626367301044, 50.406626367301044-0.017971305190311*1600, + -127.620375523875420+0.017971305190311*3400, -127.620375523875420); + conus->tile->zindex = 1; + g_signal_connect_swapped(viewer, "time-changed", G_CALLBACK(_conus_update), conus); + g_signal_connect_swapped(viewer, "refresh", G_CALLBACK(_conus_update), conus); + gis_viewer_add(viewer, GIS_OBJECT(conus->tile), GIS_LEVEL_WORLD, TRUE); + gtk_notebook_append_page(GTK_NOTEBOOK(pconfig), conus->config, gtk_label_new("Conus")); + _conus_update(conus); + return conus; +} + +void radar_conus_free(RadarConus *conus) +{ + g_object_unref(conus->viewer); + g_free(conus); +} + + /****************** * GisPluginRadar * ******************/ @@ -363,6 +536,9 @@ GisPluginRadar *gis_plugin_radar_new(GisViewer *viewer, GisPrefs *prefs) GisCallback *hud_cb = gis_callback_new(_draw_hud, self); gis_viewer_add(viewer, GIS_OBJECT(hud_cb), GIS_LEVEL_HUD, FALSE); + /* Load Conus */ + self->conus = radar_conus_new(self->config, self->viewer, self->conus_http); + /* Load radar sites */ for (city_t *city = cities; city->type; city++) { if (city->type != LOCATION_CITY) @@ -397,6 +573,7 @@ static void gis_plugin_radar_init(GisPluginRadar *self) g_debug("GisPluginRadar: class_init"); /* Set defaults */ self->sites_http = gis_http_new(G_DIR_SEPARATOR_S "nexrad" G_DIR_SEPARATOR_S "level2" G_DIR_SEPARATOR_S); + self->conus_http = gis_http_new(G_DIR_SEPARATOR_S "nexrad" G_DIR_SEPARATOR_S "conus" G_DIR_SEPARATOR_S); self->sites = g_hash_table_new(g_str_hash, g_str_equal); self->config = gtk_notebook_new(); gtk_notebook_set_tab_pos(GTK_NOTEBOOK(self->config), GTK_POS_LEFT); @@ -413,6 +590,7 @@ static void gis_plugin_radar_finalize(GObject *gobject) g_debug("GisPluginRadar: finalize"); GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject); /* Free data */ + gis_http_free(self->conus_http); gis_http_free(self->sites_http); g_hash_table_destroy(self->sites); gtk_widget_destroy(self->config); diff --git a/src/plugins/radar.h b/src/plugins/radar.h index 47f637e..31152db 100644 --- a/src/plugins/radar.h +++ b/src/plugins/radar.h @@ -34,6 +34,7 @@ typedef struct _GisPluginRadar GisPluginRadar; typedef struct _GisPluginRadarClass GisPluginRadarClass; +typedef struct _RadarConus RadarConus; typedef struct _RadarSite RadarSite; struct _GisPluginRadar { @@ -47,6 +48,9 @@ struct _GisPluginRadar { GHashTable *sites; GisHttp *sites_http; + + RadarConus *conus; + GisHttp *conus_http; }; struct _GisPluginRadarClass {