2 * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
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/>.
25 #define MAX_RESOLUTION 500
26 #define TILE_WIDTH 1024
27 #define TILE_HEIGHT 512
29 struct _LoadTileData {
34 static gboolean _load_tile_cb(gpointer _data)
36 struct _LoadTileData *data = _data;
37 GisPluginBmng *self = data->self;
38 GisTile *tile = data->tile;
39 GdkPixbuf *pixbuf = data->pixbuf;
43 g_debug("GisPluginBmng: _load_tile_cb start");
44 guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
45 gboolean alpha = gdk_pixbuf_get_has_alpha(pixbuf);
46 gint width = gdk_pixbuf_get_width(pixbuf);
47 gint height = gdk_pixbuf_get_height(pixbuf);
49 guint *tex = g_new0(guint, 1);
50 gis_viewer_begin(self->viewer);
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);
63 gis_viewer_end(self->viewer);
66 gtk_widget_queue_draw(GTK_WIDGET(self->viewer));
67 g_object_unref(pixbuf);
71 static void _load_tile(GisTile *tile, gpointer _self)
73 GisPluginBmng *self = _self;
74 g_debug("GisPluginBmng: _load_tile start %p", g_thread_self());
75 char *path = gis_wms_make_local(self->wms, tile);
76 struct _LoadTileData *data = g_new0(struct _LoadTileData, 1);
79 data->pixbuf = gdk_pixbuf_new_from_file(path, NULL);
81 g_warning("GisPluginBmng: _load_tile - Error loading pixbuf %s", path);
83 g_idle_add_full(G_PRIORITY_LOW, _load_tile_cb, data, NULL);
84 g_debug("GisPluginBmng: _load_tile end %p", g_thread_self());
87 static gboolean _free_tile_cb(gpointer data)
89 glDeleteTextures(1, data);
93 static void _free_tile(GisTile *tile, gpointer _self)
95 GisPluginBmng *self = _self;
96 g_debug("GisPluginBmng: _free_tile: %p=%d", tile->data, *(guint*)tile->data);
97 g_idle_add_full(G_PRIORITY_LOW, _free_tile_cb, tile->data, NULL);
100 static gpointer _update_tiles(gpointer _self)
102 g_debug("GisPluginBmng: _update_tiles");
103 GisPluginBmng *self = _self;
104 g_mutex_lock(self->mutex);
105 gdouble lat, lon, elev;
106 gis_viewer_get_location(self->viewer, &lat, &lon, &elev);
107 gis_tile_update(self->tiles,
108 MAX_RESOLUTION, TILE_WIDTH, TILE_WIDTH,
111 gis_tile_gc(self->tiles, time(NULL)-10,
113 g_mutex_unlock(self->mutex);
120 static void _on_location_changed(GisViewer *viewer,
121 gdouble lat, gdouble lon, gdouble elev, GisPluginBmng *self)
123 g_thread_create(_update_tiles, self, FALSE, NULL);
126 static gpointer _expose(GisCallback *callback, gpointer _self)
128 GisPluginBmng *self = GIS_PLUGIN_BMNG(_self);
129 g_debug("GisPluginBmng: expose viewer=%p tiles=%p,%p",
130 self->viewer, self->tiles, self->tiles->data);
131 gis_viewer_render_tiles(self->viewer, self->tiles);
138 GisPluginBmng *gis_plugin_bmng_new(GisViewer *viewer)
140 g_debug("GisPluginBmng: new");
141 GisPluginBmng *self = g_object_new(GIS_TYPE_PLUGIN_BMNG, NULL);
142 self->viewer = viewer;
144 /* Load initial tiles */
145 _load_tile(self->tiles, self);
146 g_thread_create(_update_tiles, self, FALSE, NULL);
148 /* Connect signals */
149 self->sigid = g_signal_connect(self->viewer, "location-changed",
150 G_CALLBACK(_on_location_changed), self);
153 GisCallback *callback = gis_callback_new(_expose, self);
154 gis_viewer_add(viewer, GIS_OBJECT(callback), GIS_LEVEL_WORLD, 0);
164 static void gis_plugin_bmng_plugin_init(GisPluginInterface *iface);
165 G_DEFINE_TYPE_WITH_CODE(GisPluginBmng, gis_plugin_bmng, G_TYPE_OBJECT,
166 G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
167 gis_plugin_bmng_plugin_init));
168 static void gis_plugin_bmng_plugin_init(GisPluginInterface *iface)
170 g_debug("GisPluginBmng: plugin_init");
171 /* Add methods to the interface */
173 /* Class/Object init */
174 static void gis_plugin_bmng_init(GisPluginBmng *self)
176 g_debug("GisPluginBmng: init");
178 self->mutex = g_mutex_new();
179 self->tiles = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
180 self->wms = gis_wms_new(
181 "http://www.nasa.network.com/wms", "bmng200406", "image/jpeg",
182 "bmng/", "jpg", TILE_WIDTH, TILE_HEIGHT);
184 static void gis_plugin_bmng_dispose(GObject *gobject)
186 g_debug("GisPluginBmng: dispose");
187 GisPluginBmng *self = GIS_PLUGIN_BMNG(gobject);
188 /* Drop references */
189 g_signal_handler_disconnect(self->viewer, self->sigid);
190 G_OBJECT_CLASS(gis_plugin_bmng_parent_class)->dispose(gobject);
192 static void gis_plugin_bmng_finalize(GObject *gobject)
194 g_debug("GisPluginBmng: finalize");
195 GisPluginBmng *self = GIS_PLUGIN_BMNG(gobject);
197 gis_tile_free(self->tiles, _free_tile, self);
198 gis_wms_free(self->wms);
199 g_mutex_free(self->mutex);
200 G_OBJECT_CLASS(gis_plugin_bmng_parent_class)->finalize(gobject);
203 static void gis_plugin_bmng_class_init(GisPluginBmngClass *klass)
205 g_debug("GisPluginBmng: class_init");
206 GObjectClass *gobject_class = (GObjectClass*)klass;
207 gobject_class->dispose = gis_plugin_bmng_dispose;
208 gobject_class->finalize = gis_plugin_bmng_finalize;