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/>.
20 * @short_description: OpenGL based virtual globe
22 * #GisOpenGL is the core rendering engine used by libgis. Theoretically other
23 * renderers could be writte, but they have not been. GisOpenGL uses the ROAM
24 * algorithm for updating surface mesh the planet. The only thing GisOpenGL can
25 * actually render on it's own is a wireframe of a sphere.
27 * GisOpenGL relies on #GtkGlExt and requires (at least) OpenGL 2.0.
33 #include <gdk/gdkkeysyms.h>
35 #include <gtk/gtkgl.h>
39 #include "gis-opengl.h"
43 #include "objects/gis-object.h"
44 #include "objects/gis-marker.h"
45 #include "objects/gis-callback.h"
49 /* Tessellation, "finding intersecting triangles" */
50 /* http://research.microsoft.com/pubs/70307/tr-2006-81.pdf */
51 /* http://www.opengl.org/wiki/Alpha_Blending */
56 static void _set_visuals(GisOpenGL *opengl)
58 glMatrixMode(GL_MODELVIEW);
62 double lat, lon, elev, rx, ry, rz;
63 gis_viewer_get_location(GIS_VIEWER(opengl), &lat, &lon, &elev);
64 gis_viewer_get_rotation(GIS_VIEWER(opengl), &rx, &ry, &rz);
65 glRotatef(rx, 1, 0, 0);
66 glRotatef(rz, 0, 0, 1);
70 float light_ambient[] = {0.7f, 0.7f, 0.7f, 1.0f};
71 float light_diffuse[] = {2.0f, 2.0f, 2.0f, 1.0f};
73 float light_ambient[] = {0.2f, 0.2f, 0.2f, 1.0f};
74 float light_diffuse[] = {5.0f, 5.0f, 5.0f, 1.0f};
76 float light_position[] = {-13*EARTH_R, 1*EARTH_R, 3*EARTH_R, 1.0f};
77 glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
78 glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
79 glLightfv(GL_LIGHT0, GL_POSITION, light_position);
81 glEnable(GL_LIGHTING);
83 float material_ambient[] = {0.2, 0.2, 0.2, 1.0};
84 float material_diffuse[] = {0.8, 0.8, 0.8, 1.0};
85 float material_specular[] = {0.1, 0.1, 0.1, 1.0};
86 float material_emission[] = {0.0, 0.0, 0.0, 1.0};
87 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, material_ambient);
88 glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, material_diffuse);
89 glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, material_specular);
90 glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, material_emission);
91 glDisable(GL_TEXTURE_2D);
92 glDisable(GL_COLOR_MATERIAL);
95 glTranslatef(0, 0, -elev2rad(elev));
96 glRotatef(lat, 1, 0, 0);
97 glRotatef(-lon, 0, 1, 0);
99 glDisable(GL_ALPHA_TEST);
101 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
106 glEnable(GL_CULL_FACE);
110 glDepthFunc(GL_LEQUAL);
111 glEnable(GL_DEPTH_TEST);
113 glEnable(GL_LINE_SMOOTH);
115 glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
116 //glShadeModel(GL_FLAT);
118 roam_sphere_update_view(opengl->sphere);
122 /********************
124 ********************/
125 static void _draw_tile(GisOpenGL *opengl, GisTile *tile, GList *triangles)
127 if (!tile || !tile->data)
130 g_warning("GisOpenGL: _draw_tiles - No triangles to draw: edges=%f,%f,%f,%f",
131 tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
132 //g_message("drawing %4d triangles for tile edges=%7.2f,%7.2f,%7.2f,%7.2f",
133 // g_list_length(triangles), tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
134 for (GList *cur = triangles; cur; cur = cur->next) {
135 RoamTriangle *tri = cur->data;
137 gdouble lat[3] = {tri->p.r->lat, tri->p.m->lat, tri->p.l->lat};
138 gdouble lon[3] = {tri->p.r->lon, tri->p.m->lon, tri->p.l->lon};
140 if (lon[0] < -90 || lon[1] < -90 || lon[2] < -90) {
141 if (lon[0] > 90) lon[0] -= 360;
142 if (lon[1] > 90) lon[1] -= 360;
143 if (lon[2] > 90) lon[2] -= 360;
146 gdouble n = tile->edge.n;
147 gdouble s = tile->edge.s;
148 gdouble e = tile->edge.e;
149 gdouble w = tile->edge.w;
151 gdouble londist = e - w;
152 gdouble latdist = n - s;
155 {(lon[0]-w)/londist, 1-(lat[0]-s)/latdist},
156 {(lon[1]-w)/londist, 1-(lat[1]-s)/latdist},
157 {(lon[2]-w)/londist, 1-(lat[2]-s)/latdist},
160 //if ((lat[0] == 90 && (xy[0][0] < 0 || xy[0][0] > 1)) ||
161 // (lat[1] == 90 && (xy[1][0] < 0 || xy[1][0] > 1)) ||
162 // (lat[2] == 90 && (xy[2][0] < 0 || xy[2][0] > 1)))
163 // g_message("w,e=%4.f,%4.f "
165 // "%4.1f,%4.0f,%4.2f,%4.2f "
166 // "%4.1f,%4.0f,%4.2f,%4.2f "
167 // "%4.1f,%4.0f,%4.2f,%4.2f ",
169 // lat[0], lon[0], xy[0][0], xy[0][1],
170 // lat[1], lon[1], xy[1][0], xy[1][1],
171 // lat[2], lon[2], xy[2][0], xy[2][1]);
174 if (lat[0] == 90 || lat[0] == -90) xy[0][0] = 0.5;
175 if (lat[1] == 90 || lat[1] == -90) xy[1][0] = 0.5;
176 if (lat[2] == 90 || lat[2] == -90) xy[2][0] = 0.5;
178 glEnable(GL_TEXTURE_2D);
179 glBindTexture(GL_TEXTURE_2D, *(guint*)tile->data);
180 glBegin(GL_TRIANGLES);
181 glNormal3dv(tri->p.r->norm); glTexCoord2dv(xy[0]); glVertex3dv((double*)tri->p.r);
182 glNormal3dv(tri->p.m->norm); glTexCoord2dv(xy[1]); glVertex3dv((double*)tri->p.m);
183 glNormal3dv(tri->p.l->norm); glTexCoord2dv(xy[2]); glVertex3dv((double*)tri->p.l);
186 g_list_free(triangles);
189 static void _draw_tiles(GisOpenGL *opengl, GisTile *tile)
191 /* Only draw children if possible */
192 gboolean has_children = FALSE;
194 gis_tile_foreach(tile, child)
195 if (child && child->data)
198 GList *triangles = NULL;
200 /* TODO: simplify this */
201 const gdouble rows = G_N_ELEMENTS(tile->children);
202 const gdouble cols = G_N_ELEMENTS(tile->children[0]);
203 const gdouble lat_dist = tile->edge.n - tile->edge.s;
204 const gdouble lon_dist = tile->edge.e - tile->edge.w;
205 const gdouble lat_step = lat_dist / rows;
206 const gdouble lon_step = lon_dist / cols;
208 gis_tile_foreach_index(tile, row, col) {
209 GisTile *child = tile->children[row][col];
210 if (child && child->data) {
211 _draw_tiles(opengl, child);
213 const gdouble n = tile->edge.n-(lat_step*(row+0));
214 const gdouble s = tile->edge.n-(lat_step*(row+1));
215 const gdouble e = tile->edge.w+(lon_step*(col+1));
216 const gdouble w = tile->edge.w+(lon_step*(col+0));
217 GList *these = roam_sphere_get_intersect(opengl->sphere, FALSE, n, s, e, w);
218 triangles = g_list_concat(triangles, these);
222 triangles = roam_sphere_get_intersect(opengl->sphere, FALSE,
223 tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
226 _draw_tile(opengl, tile, triangles);
229 static void _draw_marker(GisOpenGL *opengl, GisMarker *marker)
231 GisPoint *point = gis_object_center(marker);
233 gis_viewer_project(GIS_VIEWER(opengl),
234 point->lat, point->lon, point->elev,
239 //g_debug("GisOpenGL: draw_marker - %s pz=%f ", marker->label, pz);
241 cairo_surface_t *surface = cairo_get_target(marker->cairo);
242 gdouble width = cairo_image_surface_get_width(surface);
243 gdouble height = cairo_image_surface_get_height(surface);
245 glMatrixMode(GL_PROJECTION); glLoadIdentity();
246 glMatrixMode(GL_MODELVIEW); glLoadIdentity();
247 glOrtho(0, GTK_WIDGET(opengl)->allocation.width,
248 0, GTK_WIDGET(opengl)->allocation.height, -1, 1);
249 glTranslated(px - marker->xoff,
250 py - marker->yoff, 0);
252 glDisable(GL_LIGHTING);
253 glDisable(GL_COLOR_MATERIAL);
254 glDisable(GL_DEPTH_TEST);
255 glEnable(GL_TEXTURE_2D);
256 glBindTexture(GL_TEXTURE_2D, marker->tex);
258 glTexCoord2f(1, 1); glVertex3f(width, 0 , 0);
259 glTexCoord2f(1, 0); glVertex3f(width, height, 0);
260 glTexCoord2f(0, 0); glVertex3f(0 , height, 0);
261 glTexCoord2f(0, 1); glVertex3f(0 , 0 , 0);
265 static void _draw_callback(GisOpenGL *opengl, GisCallback *callback)
267 callback->callback(callback, callback->user_data);
270 static void _draw_object(GisOpenGL *opengl, GisObject *object)
272 //g_debug("GisOpenGL: draw_object");
273 /* Skip out of range objects */
274 if (object->lod > 0) {
275 gdouble eye[3], obj[3];
276 gis_viewer_get_location(GIS_VIEWER(opengl), &eye[0], &eye[1], &eye[2]);
277 lle2xyz(eye[0], eye[1], eye[2], &eye[0], &eye[1], &eye[2]);
278 lle2xyz(object->center.lat, object->center.lon, object->center.elev,
279 &obj[0], &obj[1], &obj[2]);
280 gdouble dist = distd(obj, eye);
281 if (object->lod < dist)
286 glMatrixMode(GL_PROJECTION); glPushMatrix();
287 glMatrixMode(GL_MODELVIEW); glPushMatrix();
288 glPushAttrib(GL_ALL_ATTRIB_BITS);
289 if (GIS_IS_MARKER(object)) {
290 _draw_marker(opengl, GIS_MARKER(object));
291 } else if (GIS_IS_CALLBACK(object)) {
292 _draw_callback(opengl, GIS_CALLBACK(object));
293 } else if (GIS_IS_TILE(object)) {
294 glEnable(GL_DEPTH_TEST);
295 glDepthFunc(GL_LESS);
296 _draw_tiles(opengl, GIS_TILE(object));
299 glMatrixMode(GL_PROJECTION); glPopMatrix();
300 glMatrixMode(GL_MODELVIEW); glPopMatrix();
303 static void _load_object(GisOpenGL *opengl, GisObject *object)
305 g_debug("GisOpenGL: load_object");
306 if (GIS_IS_MARKER(object)) {
307 GisMarker *marker = GIS_MARKER(object);
308 cairo_surface_t *surface = cairo_get_target(marker->cairo);
309 gdouble width = cairo_image_surface_get_width(surface);
310 gdouble height = cairo_image_surface_get_height(surface);
312 glEnable(GL_TEXTURE_2D);
313 glGenTextures(1, &marker->tex);
314 glBindTexture(GL_TEXTURE_2D, marker->tex);
316 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
317 glPixelStorei(GL_PACK_ALIGNMENT, 1);
318 glTexImage2D(GL_TEXTURE_2D, 0, 4, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE,
319 cairo_image_surface_get_data(surface));
320 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
321 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
322 g_debug("load_texture: %d", marker->tex);
326 static void _unload_object(GisOpenGL *opengl, GisObject *object)
328 g_debug("GisOpenGL: unload_object");
329 if (GIS_IS_MARKER(object)) {
330 GisMarker *marker = GIS_MARKER(object);
331 glDeleteTextures(1, &marker->tex);
339 /* The unsorted/sroted GLists are blank head nodes,
340 * This way us we can remove objects from the level just by fixing up links
341 * I.e. we don't need to do a lookup to remove an object if we have its GList */
347 static gboolean on_configure(GisOpenGL *opengl, GdkEventConfigure *event, gpointer _)
349 g_debug("GisOpenGL: on_configure");
351 double width = GTK_WIDGET(opengl)->allocation.width;
352 double height = GTK_WIDGET(opengl)->allocation.height;
354 /* Setup OpenGL Window */
355 glViewport(0, 0, width, height);
356 glMatrixMode(GL_PROJECTION);
358 double ang = atan(height/FOV_DIST);
359 gluPerspective(rad2deg(ang)*2, width/height, 1, 10*EARTH_R);
362 g_mutex_lock(opengl->sphere_lock);
363 roam_sphere_update_errors(opengl->sphere);
364 g_mutex_unlock(opengl->sphere_lock);
370 static void on_realize(GisOpenGL *opengl, gpointer _)
372 g_debug("GisOpenGL: on_realize");
374 GdkGLContext *glcontext = gtk_widget_get_gl_context(GTK_WIDGET(opengl));
375 GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(opengl));
376 if (!gdk_gl_drawable_gl_begin(gldrawable, glcontext))
377 g_assert_not_reached();
379 _set_visuals(opengl);
380 on_configure(opengl, NULL, NULL);
383 static gboolean _draw_level(gpointer key, gpointer value, gpointer user_data)
385 g_debug("GisOpenGL: _draw_level - level=%-4d", (int)key);
386 GisOpenGL *opengl = user_data;
387 struct RenderLevel *level = value;
388 int nsorted = 0, nunsorted = 0;
391 /* Draw opaque objects without sorting */
393 glClear(GL_DEPTH_BUFFER_BIT);
394 for (cur = level->unsorted.next; cur; cur = cur->next, nunsorted++)
395 _draw_object(opengl, GIS_OBJECT(cur->data));
397 /* Freeze depth buffer and draw transparent objects sorted */
399 //glDepthMask(FALSE);
400 glAlphaFunc(GL_GREATER, 0.1);
401 for (cur = level->sorted.next; cur; cur = cur->next, nsorted++)
402 _draw_object(opengl, GIS_OBJECT(cur->data));
404 /* TODO: Prune empty levels */
406 g_debug("GisOpenGL: _draw_level - drew %d,%d objects",
411 static gboolean on_expose(GisOpenGL *opengl, GdkEventExpose *event, gpointer _)
413 g_debug("GisOpenGL: on_expose - begin");
415 glClear(GL_COLOR_BUFFER_BIT);
417 _set_visuals(opengl);
419 glColor4f(0.0, 0.0, 9.0, 0.6);
420 glDisable(GL_TEXTURE_2D);
421 glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
422 roam_sphere_draw(opengl->sphere);
423 //roam_sphere_draw_normals(opengl->sphere);
425 g_tree_foreach(opengl->objects, _draw_level, opengl);
426 if (opengl->wireframe) {
427 glClear(GL_DEPTH_BUFFER_BIT);
428 glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
429 roam_sphere_draw(opengl->sphere);
433 GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(opengl));
434 gdk_gl_drawable_swap_buffers(gldrawable);
436 g_debug("GisOpenGL: on_expose - end\n");
440 static gboolean on_key_press(GisOpenGL *opengl, GdkEventKey *event, gpointer _)
442 g_debug("GisOpenGL: on_key_press - key=%x, state=%x, plus=%x",
443 event->keyval, event->state, GDK_plus);
445 guint kv = event->keyval;
449 opengl->wireframe = !opengl->wireframe;
450 gtk_widget_queue_draw(GTK_WIDGET(opengl));
453 else if (kv == GDK_n) roam_sphere_split_one(opengl->sphere);
454 else if (kv == GDK_p) roam_sphere_merge_one(opengl->sphere);
455 else if (kv == GDK_r) roam_sphere_split_merge(opengl->sphere);
456 else if (kv == GDK_u) roam_sphere_update_errors(opengl->sphere);
458 gtk_widget_queue_draw(GTK_WIDGET(opengl));
465 static gboolean _update_errors_cb(gpointer sphere)
467 roam_sphere_update_errors(sphere);
470 static void on_view_changed(GisOpenGL *opengl,
471 gdouble _1, gdouble _2, gdouble _3)
473 g_debug("GisOpenGL: on_view_changed");
474 _set_visuals(opengl);
476 opengl->ue_source = g_idle_add_full(G_PRIORITY_HIGH_IDLE+30,
477 _update_errors_cb, opengl->sphere, NULL);
478 //roam_sphere_update_errors(opengl->sphere);
482 static gboolean on_idle(GisOpenGL *opengl)
484 //g_debug("GisOpenGL: on_idle");
486 g_mutex_lock(opengl->sphere_lock);
487 if (roam_sphere_split_merge(opengl->sphere))
488 gtk_widget_queue_draw(GTK_WIDGET(opengl));
489 g_mutex_unlock(opengl->sphere_lock);
495 /*********************
496 * GisViewer methods *
497 *********************/
500 * @plugins: the plugins store to use
501 * @prefs: the preferences object to use
503 * Create a new OpenGL renderer.
505 * Returns: the new #GisOpenGL
507 GisViewer *gis_opengl_new(GisPlugins *plugins, GisPrefs *prefs)
509 g_debug("GisOpenGL: new");
510 GisViewer *opengl = g_object_new(GIS_TYPE_OPENGL, NULL);
511 gis_viewer_setup(opengl, plugins, prefs);
515 static void gis_opengl_center_position(GisViewer *_opengl, gdouble lat, gdouble lon, gdouble elev)
517 GisOpenGL *opengl = GIS_OPENGL(_opengl);
518 glRotatef(lon, 0, 1, 0);
519 glRotatef(-lat, 1, 0, 0);
520 glTranslatef(0, 0, elev2rad(elev));
523 static void gis_opengl_project(GisViewer *_opengl,
524 gdouble lat, gdouble lon, gdouble elev,
525 gdouble *px, gdouble *py, gdouble *pz)
527 GisOpenGL *opengl = GIS_OPENGL(_opengl);
529 lle2xyz(lat, lon, elev, &x, &y, &z);
531 opengl->sphere->view->model,
532 opengl->sphere->view->proj,
533 opengl->sphere->view->view,
537 static void gis_opengl_set_height_func(GisViewer *_opengl, GisTile *tile,
538 RoamHeightFunc height_func, gpointer user_data, gboolean update)
540 GisOpenGL *opengl = GIS_OPENGL(_opengl);
543 /* TODO: get points? */
544 g_mutex_lock(opengl->sphere_lock);
545 GList *triangles = roam_sphere_get_intersect(opengl->sphere, TRUE,
546 tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
547 for (GList *cur = triangles; cur; cur = cur->next) {
548 RoamTriangle *tri = cur->data;
549 RoamPoint *points[] = {tri->p.l, tri->p.m, tri->p.r, tri->split};
550 for (int i = 0; i < G_N_ELEMENTS(points); i++) {
551 if (tile->edge.n >= points[i]->lat && points[i]->lat >= tile->edge.s &&
552 tile->edge.e >= points[i]->lon && points[i]->lon >= tile->edge.w) {
553 points[i]->height_func = height_func;
554 points[i]->height_data = user_data;
555 roam_point_update_height(points[i]);
559 g_list_free(triangles);
560 g_mutex_unlock(opengl->sphere_lock);
563 static void _gis_opengl_clear_height_func_rec(RoamTriangle *root)
567 RoamPoint *points[] = {root->p.l, root->p.m, root->p.r, root->split};
568 for (int i = 0; i < G_N_ELEMENTS(points); i++) {
569 points[i]->height_func = NULL;
570 points[i]->height_data = NULL;
571 roam_point_update_height(points[i]);
573 _gis_opengl_clear_height_func_rec(root->kids[0]);
574 _gis_opengl_clear_height_func_rec(root->kids[1]);
577 static void gis_opengl_clear_height_func(GisViewer *_opengl)
579 GisOpenGL *opengl = GIS_OPENGL(_opengl);
580 for (int i = 0; i < G_N_ELEMENTS(opengl->sphere->roots); i++)
581 _gis_opengl_clear_height_func_rec(opengl->sphere->roots[i]);
584 static gpointer gis_opengl_add(GisViewer *_opengl, GisObject *object,
585 gint key, gboolean sort)
587 g_assert(GIS_IS_OPENGL(_opengl));
588 GisOpenGL *opengl = GIS_OPENGL(_opengl);
589 _load_object(opengl, object);
590 struct RenderLevel *level = g_tree_lookup(opengl->objects, (gpointer)key);
592 level = g_new0(struct RenderLevel, 1);
593 g_tree_insert(opengl->objects, (gpointer)key, level);
595 GList *list = sort ? &level->sorted : &level->unsorted;
596 /* Put the link in the list */
597 GList *next = g_new0(GList, 1);
600 next->next = list->next;
605 static GisObject *gis_opengl_remove(GisViewer *_opengl, gpointer _link)
607 g_assert(GIS_IS_OPENGL(_opengl));
608 GisOpenGL *opengl = GIS_OPENGL(_opengl);
610 GisObject *object = link->data;
611 _unload_object(opengl, object);
612 /* Just unlink and free it, link->prev is assured */
613 link->prev->next = link->next;
615 link->next->prev = link->prev;
617 g_object_unref(object);
624 static int _objects_cmp(gconstpointer _a, gconstpointer _b, gpointer _)
626 gint a = (int)_a, b = (int)_b;
630 static void _objects_free(gpointer value)
632 struct RenderLevel *level = value;
633 if (level->sorted.next)
634 g_list_free(level->sorted.next);
635 if (level->unsorted.next)
636 g_list_free(level->unsorted.next);
640 G_DEFINE_TYPE(GisOpenGL, gis_opengl, GIS_TYPE_VIEWER);
641 static void gis_opengl_init(GisOpenGL *opengl)
643 g_debug("GisOpenGL: init");
645 GdkGLConfig *glconfig = gdk_gl_config_new_by_mode(
646 GDK_GL_MODE_RGBA | GDK_GL_MODE_DEPTH |
647 GDK_GL_MODE_DOUBLE | GDK_GL_MODE_ALPHA);
649 g_error("Failed to create glconfig");
650 if (!gtk_widget_set_gl_capability(GTK_WIDGET(opengl),
651 glconfig, NULL, TRUE, GDK_GL_RGBA_TYPE))
652 g_error("GL lacks required capabilities");
653 g_object_unref(glconfig);
655 opengl->objects = g_tree_new_full(_objects_cmp, NULL, NULL, _objects_free);
656 opengl->sphere = roam_sphere_new(opengl);
657 opengl->sphere_lock = g_mutex_new();
660 opengl->sm_source[0] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+30, 33, (GSourceFunc)on_idle, opengl, NULL);
661 opengl->sm_source[1] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+10, 500, (GSourceFunc)on_idle, opengl, NULL);
664 gtk_widget_add_events(GTK_WIDGET(opengl), GDK_KEY_PRESS_MASK);
665 g_signal_connect(opengl, "realize", G_CALLBACK(on_realize), NULL);
666 g_signal_connect(opengl, "configure-event", G_CALLBACK(on_configure), NULL);
667 g_signal_connect(opengl, "expose-event", G_CALLBACK(on_expose), NULL);
669 g_signal_connect(opengl, "key-press-event", G_CALLBACK(on_key_press), NULL);
671 g_signal_connect(opengl, "location-changed", G_CALLBACK(on_view_changed), NULL);
672 g_signal_connect(opengl, "rotation-changed", G_CALLBACK(on_view_changed), NULL);
674 static void gis_opengl_dispose(GObject *_opengl)
676 g_debug("GisOpenGL: dispose");
677 GisOpenGL *opengl = GIS_OPENGL(_opengl);
678 if (opengl->sm_source[0]) {
679 g_source_remove(opengl->sm_source[0]);
680 opengl->sm_source[0] = 0;
682 if (opengl->sm_source[1]) {
683 g_source_remove(opengl->sm_source[1]);
684 opengl->sm_source[1] = 0;
686 if (opengl->ue_source) {
687 g_source_remove(opengl->ue_source);
688 opengl->ue_source = 0;
690 G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(_opengl);
692 static void gis_opengl_finalize(GObject *_opengl)
694 g_debug("GisOpenGL: finalize");
695 GisOpenGL *opengl = GIS_OPENGL(_opengl);
696 roam_sphere_free(opengl->sphere);
697 g_tree_destroy(opengl->objects);
698 g_mutex_free(opengl->sphere_lock);
699 G_OBJECT_CLASS(gis_opengl_parent_class)->finalize(_opengl);
701 static void gis_opengl_class_init(GisOpenGLClass *klass)
703 g_debug("GisOpenGL: class_init");
704 GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
705 gobject_class->finalize = gis_opengl_finalize;
706 gobject_class->dispose = gis_opengl_dispose;
708 GisViewerClass *viewer_class = GIS_VIEWER_CLASS(klass);
709 viewer_class->center_position = gis_opengl_center_position;
710 viewer_class->project = gis_opengl_project;
711 viewer_class->clear_height_func = gis_opengl_clear_height_func;
712 viewer_class->set_height_func = gis_opengl_set_height_func;
713 viewer_class->add = gis_opengl_add;
714 viewer_class->remove = gis_opengl_remove;