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/>.
19 #include <glib/gstdio.h>
26 #define MAX_RESOLUTION 500
27 #define TILE_WIDTH 1024
28 #define TILE_HEIGHT 512
30 struct _LoadTileData {
35 static gboolean _load_tile_cb(gpointer _data)
37 struct _LoadTileData *data = _data;
38 GisPluginSat *self = data->self;
39 GisTile *tile = data->tile;
40 GdkPixbuf *pixbuf = data->pixbuf;
44 g_debug("GisPluginSat: _load_tile_cb start");
45 guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
46 gboolean alpha = gdk_pixbuf_get_has_alpha(pixbuf);
47 gint width = gdk_pixbuf_get_width(pixbuf);
48 gint height = gdk_pixbuf_get_height(pixbuf);
50 guint *tex = g_new0(guint, 1);
51 glGenTextures(1, tex);
52 glBindTexture(GL_TEXTURE_2D, *tex);
54 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
55 glPixelStorei(GL_PACK_ALIGNMENT, 1);
56 glTexImage2D(GL_TEXTURE_2D, 0, 4, width, height, 0,
57 (alpha ? GL_RGBA : GL_RGB), GL_UNSIGNED_BYTE, pixels);
58 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
59 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
60 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
61 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
65 gtk_widget_queue_draw(GTK_WIDGET(self->viewer));
66 g_object_unref(pixbuf);
70 static void _load_tile(GisTile *tile, gpointer _self)
72 GisPluginSat *self = _self;
73 g_debug("GisPluginSat: _load_tile start %p", g_thread_self());
74 char *path = gis_wms_fetch(self->wms, tile, GIS_ONCE, NULL, NULL);
75 struct _LoadTileData *data = g_new0(struct _LoadTileData, 1);
78 data->pixbuf = gdk_pixbuf_new_from_file(path, NULL);
80 g_idle_add_full(G_PRIORITY_LOW, _load_tile_cb, data, NULL);
82 g_warning("GisPluginSat: _load_tile - Error loading pixbuf %s", path);
87 g_debug("GisPluginSat: _load_tile end %p", g_thread_self());
90 static gboolean _free_tile_cb(gpointer data)
92 glDeleteTextures(1, data);
96 static void _free_tile(GisTile *tile, gpointer _self)
98 GisPluginSat *self = _self;
99 g_debug("GisPluginSat: _free_tile: %p=%d", tile->data, *(guint*)tile->data);
100 g_idle_add_full(G_PRIORITY_LOW, _free_tile_cb, tile->data, NULL);
103 static gpointer _update_tiles(gpointer _self)
105 g_debug("GisPluginSat: _update_tiles");
106 GisPluginSat *self = _self;
107 g_mutex_lock(self->mutex);
108 gdouble lat, lon, elev;
109 gis_viewer_get_location(self->viewer, &lat, &lon, &elev);
110 gis_tile_update(self->tiles,
111 MAX_RESOLUTION, TILE_WIDTH, TILE_WIDTH,
114 gis_tile_gc(self->tiles, time(NULL)-10,
116 g_mutex_unlock(self->mutex);
123 static void _on_location_changed(GisViewer *viewer,
124 gdouble lat, gdouble lon, gdouble elev, GisPluginSat *self)
126 g_thread_create(_update_tiles, self, FALSE, NULL);
132 GisPluginSat *gis_plugin_sat_new(GisViewer *viewer)
134 g_debug("GisPluginSat: new");
135 GisPluginSat *self = g_object_new(GIS_TYPE_PLUGIN_SAT, NULL);
136 self->viewer = g_object_ref(viewer);
138 /* Load initial tiles */
139 _load_tile(self->tiles, self);
140 g_thread_create(_update_tiles, self, FALSE, NULL);
142 /* Connect signals */
143 self->sigid = g_signal_connect(self->viewer, "location-changed",
144 G_CALLBACK(_on_location_changed), self);
147 gis_viewer_add(viewer, GIS_OBJECT(self->tiles), GIS_LEVEL_WORLD, 0);
157 static void gis_plugin_sat_plugin_init(GisPluginInterface *iface);
158 G_DEFINE_TYPE_WITH_CODE(GisPluginSat, gis_plugin_sat, G_TYPE_OBJECT,
159 G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
160 gis_plugin_sat_plugin_init));
161 static void gis_plugin_sat_plugin_init(GisPluginInterface *iface)
163 g_debug("GisPluginSat: plugin_init");
164 /* Add methods to the interface */
166 /* Class/Object init */
167 static void gis_plugin_sat_init(GisPluginSat *self)
169 g_debug("GisPluginSat: init");
171 self->mutex = g_mutex_new();
172 self->tiles = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
173 self->wms = gis_wms_new(
174 "http://www.nasa.network.com/wms", "bmng200406", "image/jpeg",
175 "bmng/", "jpg", TILE_WIDTH, TILE_HEIGHT);
177 static void gis_plugin_sat_dispose(GObject *gobject)
179 g_debug("GisPluginSat: dispose");
180 GisPluginSat *self = GIS_PLUGIN_SAT(gobject);
181 /* Drop references */
183 g_signal_handler_disconnect(self->viewer, self->sigid);
184 g_object_unref(self->viewer);
187 G_OBJECT_CLASS(gis_plugin_sat_parent_class)->dispose(gobject);
189 static void gis_plugin_sat_finalize(GObject *gobject)
191 g_debug("GisPluginSat: finalize");
192 GisPluginSat *self = GIS_PLUGIN_SAT(gobject);
194 gis_tile_free(self->tiles, _free_tile, self);
195 gis_wms_free(self->wms);
196 g_mutex_free(self->mutex);
197 G_OBJECT_CLASS(gis_plugin_sat_parent_class)->finalize(gobject);
200 static void gis_plugin_sat_class_init(GisPluginSatClass *klass)
202 g_debug("GisPluginSat: class_init");
203 GObjectClass *gobject_class = (GObjectClass*)klass;
204 gobject_class->dispose = gis_plugin_sat_dispose;
205 gobject_class->finalize = gis_plugin_sat_finalize;