/**************
* RadarConus *
**************/
+#define CONUS_NORTH 50.406626367301044
+#define CONUS_WEST -127.620375523875420
+#define CONUS_WIDTH 3400.0
+#define CONUS_HEIGHT 1600.0
+#define CONUS_DEG_PER_PX 0.017971305190311
+
struct _RadarConus {
GisViewer *viewer;
GisHttp *http;
GtkWidget *config;
time_t time;
- GisTile *tile;
- gpointer *tile_ref;
- GdkPixbuf *pixbuf;
const gchar *message;
gchar *nearest;
+ GisTile *tile[2];
+ gpointer *tile_ref[2];
+ guchar *pixels[2];
+
guint time_id; // "time-changed" callback ID
guint refresh_id; // "refresh" callback ID
};
gboolean _conus_update_end(gpointer _conus)
{
RadarConus *conus = _conus;
+ g_debug("GisPluginRadar: _conus_update_end");
- 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);
+ for (int i = 0; i < 2; i++) {
+ GisTile *tile = conus->tile[i];
+ guchar *pixels = conus->pixels[i];
- 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);
+ if (!tile->data) {
+ tile->data = g_new0(guint, 1);
+ glGenTextures(1, tile->data);
+ }
- 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();
+ guint *tex = tile->data;
+ glBindTexture(GL_TEXTURE_2D, *tex);
+
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+ glPixelStorei(GL_PACK_ALIGNMENT, 1);
+ glTexImage2D(GL_TEXTURE_2D, 0, 4, 2048, 2048, 0,
+ GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+ glTexSubImage2D(GL_TEXTURE_2D, 0, 1,1, CONUS_WIDTH/2,CONUS_HEIGHT,
+ GL_RGBA, GL_UNSIGNED_BYTE, pixels);
+ tile->coords.n = 1.0/(CONUS_WIDTH/2);
+ tile->coords.w = 1.0/ CONUS_HEIGHT;
+ tile->coords.s = tile->coords.n + CONUS_HEIGHT / 2048.0;
+ tile->coords.e = tile->coords.w + (CONUS_WIDTH/2) / 2048.0;
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+ glFlush();
+
+ g_free(pixels);
+ }
/* finish */
_gtk_bin_set_child(GTK_BIN(conus->config),
gtk_label_new(conus->nearest));
gtk_widget_queue_draw(GTK_WIDGET(conus->viewer));
-
- /* free data */
- g_object_unref(conus->pixbuf);
g_free(conus->nearest);
return FALSE;
RadarConus *conus = _conus;
/* Find nearest */
+ g_debug("GisPluginRadar: _conus_update_thread - 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,
}
/* Fetch the image */
+ g_debug("GisPluginRadar: _conus_update_thread - fetch");
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);
goto out;
}
- /* Load the image to a pixbuf */
+ /* Load and split the pixbuf into two 2K data segments */
+ g_debug("GisPluginRadar: _conus_update_thread - load");
GError *error = NULL;
- conus->pixbuf = gdk_pixbuf_new_from_file(path, &error);
+ GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(path, &error);
+ guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
+ gint width = gdk_pixbuf_get_width(pixbuf);
+ gint height = gdk_pixbuf_get_height(pixbuf);
+ gint pxsize = gdk_pixbuf_get_has_alpha(pixbuf) ? 4 : 3;
g_free(path);
- 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}},
+ /* Split the pixbuf into east and west halves (with 2K sides)
+ * Also map the pixbuf's alpha values */
+ g_debug("GisPluginRadar: _conus_update_thread - split");
+ conus->pixels[0] = g_malloc(4*(width/2)*height);
+ conus->pixels[1] = g_malloc(4*(width/2)*height);
+ const guchar alphamap[][4] = {
+ {0x04, 0xe9, 0xe7, 0x30},
+ {0x01, 0x9f, 0xf4, 0x60},
+ {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;
- }
+ for (int y = 0; y < height; y++)
+ for (int x = 0; x < width; x++) {
+ gint subx = x % (width/2);
+ gint idx = x / (width/2);
+ guchar *src = &pixels[(y*width+x)*pxsize];
+ guchar *dst = &conus->pixels[idx][(y*(width/2)+subx)*4];
+ if (src[0] > 0xe0 &&
+ src[1] > 0xe0 &&
+ src[2] > 0xe0) {
+ dst[3] = 0x00;
+ } else {
+ dst[0] = src[0];
+ dst[1] = src[1];
+ dst[2] = src[2];
+ dst[3] = 0xff;
+ for (int j = 0; j < G_N_ELEMENTS(alphamap); j++)
+ if (src[0] == alphamap[j][0] &&
+ src[1] == alphamap[j][1] &&
+ src[2] == alphamap[j][2])
+ dst[3] = alphamap[j][3];
}
}
+ g_object_unref(pixbuf);
out:
+ g_debug("GisPluginRadar: _conus_update_thread - done");
g_idle_add(_conus_update_end, conus);
return NULL;
}
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;
- conus->tile_ref = gis_viewer_add(viewer,
- GIS_OBJECT(conus->tile), GIS_LEVEL_WORLD, TRUE);
+
+ gdouble south = CONUS_NORTH - CONUS_DEG_PER_PX*CONUS_HEIGHT;
+ gdouble east = CONUS_WEST + CONUS_DEG_PER_PX*CONUS_WIDTH;
+ gdouble mid = CONUS_WEST + CONUS_DEG_PER_PX*CONUS_WIDTH/2;
+ conus->tile[0] = gis_tile_new(NULL, CONUS_NORTH, south, mid, CONUS_WEST);
+ conus->tile[1] = gis_tile_new(NULL, CONUS_NORTH, south, east, mid);
+ conus->tile[0]->zindex = 2;
+ conus->tile[1]->zindex = 1;
+ conus->tile_ref[0] = gis_viewer_add(viewer,
+ GIS_OBJECT(conus->tile[0]), GIS_LEVEL_WORLD, TRUE);
+ conus->tile_ref[1] = gis_viewer_add(viewer,
+ GIS_OBJECT(conus->tile[1]), GIS_LEVEL_WORLD, TRUE);
conus->time_id = g_signal_connect_swapped(viewer, "time-changed",
G_CALLBACK(_conus_update), conus);
g_signal_handler_disconnect(conus->viewer, conus->time_id);
g_signal_handler_disconnect(conus->viewer, conus->refresh_id);
- if (conus->tile->data) {
- glDeleteTextures(1, conus->tile->data);
- g_free(conus->tile->data);
+ for (int i = 0; i < 2; i++) {
+ GisTile *tile = conus->tile[i];
+ gpointer ref = conus->tile_ref[i];
+ if (tile->data) {
+ glDeleteTextures(1, tile->data);
+ g_free(tile->data);
+ }
+ gis_viewer_remove(conus->viewer, ref);
}
- gis_viewer_remove(conus->viewer, conus->tile_ref);
g_object_unref(conus->viewer);
g_free(conus);
projects / aweather / commitdiff