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/>.
18 /* Tessellation, "finding intersecting triangles" */
19 /* http://research.microsoft.com/pubs/70307/tr-2006-81.pdf */
20 /* http://www.opengl.org/wiki/Alpha_Blending */
25 #include <gdk/gdkkeysyms.h>
27 #include <gtk/gtkgl.h>
31 #include "gis-opengl.h"
33 #include "gis-object.h"
36 #define FOV_DIST 2000.0
37 #define MPPX(dist) (4*dist/FOV_DIST)
44 static void _gis_opengl_begin(GisOpenGL *self)
46 g_assert(GIS_IS_OPENGL(self));
48 GdkGLContext *glcontext = gtk_widget_get_gl_context(GTK_WIDGET(self));
49 GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
51 if (!gdk_gl_drawable_gl_begin(gldrawable, glcontext))
52 g_assert_not_reached();
55 static void _gis_opengl_end(GisOpenGL *self)
57 g_assert(GIS_IS_OPENGL(self));
58 GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
59 gdk_gl_drawable_gl_end(gldrawable);
62 static void _set_visuals(GisOpenGL *self)
64 glMatrixMode(GL_MODELVIEW);
68 double lat, lon, elev, rx, ry, rz;
69 gis_viewer_get_location(GIS_VIEWER(self), &lat, &lon, &elev);
70 gis_viewer_get_rotation(GIS_VIEWER(self), &rx, &ry, &rz);
71 glRotatef(rx, 1, 0, 0);
72 glRotatef(rz, 0, 0, 1);
76 float light_ambient[] = {0.7f, 0.7f, 0.7f, 1.0f};
77 float light_diffuse[] = {2.0f, 2.0f, 2.0f, 1.0f};
79 float light_ambient[] = {0.2f, 0.2f, 0.2f, 1.0f};
80 float light_diffuse[] = {5.0f, 5.0f, 5.0f, 1.0f};
82 float light_position[] = {-13*EARTH_R, 1*EARTH_R, 3*EARTH_R, 1.0f};
83 glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
84 glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
85 glLightfv(GL_LIGHT0, GL_POSITION, light_position);
87 glEnable(GL_LIGHTING);
89 float material_ambient[] = {0.2, 0.2, 0.2, 1.0};
90 float material_diffuse[] = {0.8, 0.8, 0.8, 1.0};
91 float material_specular[] = {0.1, 0.1, 0.1, 1.0};
92 float material_emission[] = {0.0, 0.0, 0.0, 1.0};
93 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, material_ambient);
94 glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, material_diffuse);
95 glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, material_specular);
96 glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, material_emission);
97 glDisable(GL_TEXTURE_2D);
98 glDisable(GL_COLOR_MATERIAL);
101 glTranslatef(0, 0, -elev2rad(elev));
102 glRotatef(lat, 1, 0, 0);
103 glRotatef(-lon, 0, 1, 0);
105 glDisable(GL_ALPHA_TEST);
107 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
112 glEnable(GL_CULL_FACE);
116 glDepthFunc(GL_LEQUAL);
117 glEnable(GL_DEPTH_TEST);
119 glEnable(GL_LINE_SMOOTH);
121 glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
122 //glShadeModel(GL_FLAT);
124 roam_sphere_update_view(self->sphere);
128 /********************
130 ********************/
131 static void _draw_marker(GisOpenGL *self, GisMarker *marker)
133 GisPoint *point = gis_object_center(GIS_OBJECT(marker));
135 gis_viewer_project(GIS_VIEWER(self),
136 point->lat, point->lon, point->elev,
141 //g_debug("GisOpenGL: draw_marker - %s pz=%f ", marker->label, pz);
143 cairo_surface_t *surface = cairo_get_target(marker->cairo);
144 gdouble width = cairo_image_surface_get_width(surface);
145 gdouble height = cairo_image_surface_get_height(surface);
147 glMatrixMode(GL_PROJECTION); glLoadIdentity();
148 glMatrixMode(GL_MODELVIEW); glLoadIdentity();
149 glOrtho(0, GTK_WIDGET(self)->allocation.width,
150 0, GTK_WIDGET(self)->allocation.height, -1, 1);
151 glTranslated(px - marker->xoff,
152 py - marker->yoff, 0);
154 glDisable(GL_LIGHTING);
155 glDisable(GL_COLOR_MATERIAL);
156 glDisable(GL_DEPTH_TEST);
157 glEnable(GL_TEXTURE_2D);
158 glBindTexture(GL_TEXTURE_2D, marker->tex);
160 glTexCoord2f(1, 1); glVertex3f(width, 0 , 0);
161 glTexCoord2f(1, 0); glVertex3f(width, height, 0);
162 glTexCoord2f(0, 0); glVertex3f(0 , height, 0);
163 glTexCoord2f(0, 1); glVertex3f(0 , 0 , 0);
167 static void _draw_callback(GisOpenGL *self, GisCallback *callback)
169 callback->callback(callback, callback->user_data);
172 static void _draw_object(GisOpenGL *self, GisObject *object)
174 //g_debug("GisOpenGL: draw_object");
175 /* Skip out of range objects */
176 if (object->lod > 0) {
177 gdouble eye[3], obj[3];
178 gis_viewer_get_location(GIS_VIEWER(self), &eye[0], &eye[1], &eye[2]);
179 lle2xyz(eye[0], eye[1], eye[2], &eye[0], &eye[1], &eye[2]);
180 lle2xyz(object->center.lat, object->center.lon, object->center.elev,
181 &obj[0], &obj[1], &obj[2]);
182 gdouble dist = distd(obj, eye);
183 if (object->lod < dist)
188 glMatrixMode(GL_PROJECTION); glPushMatrix();
189 glMatrixMode(GL_MODELVIEW); glPushMatrix();
190 glPushAttrib(GL_ALL_ATTRIB_BITS);
191 if (GIS_IS_MARKER(object)) {
192 _draw_marker(self, GIS_MARKER(object));
193 } else if (GIS_IS_CALLBACK(object)) {
194 _draw_callback(self, GIS_CALLBACK(object));
197 glMatrixMode(GL_PROJECTION); glPopMatrix();
198 glMatrixMode(GL_MODELVIEW); glPopMatrix();
201 static void _load_object(GisOpenGL *self, GisObject *object)
203 g_debug("GisOpenGL: load_object");
204 if (GIS_IS_MARKER(object)) {
205 GisMarker *marker = GIS_MARKER(object);
206 cairo_surface_t *surface = cairo_get_target(marker->cairo);
207 gdouble width = cairo_image_surface_get_width(surface);
208 gdouble height = cairo_image_surface_get_height(surface);
210 _gis_opengl_begin(self);
211 glEnable(GL_TEXTURE_2D);
212 glGenTextures(1, &marker->tex);
213 glBindTexture(GL_TEXTURE_2D, marker->tex);
215 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
216 glPixelStorei(GL_PACK_ALIGNMENT, 1);
217 glTexImage2D(GL_TEXTURE_2D, 0, 4, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE,
218 cairo_image_surface_get_data(surface));
219 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
220 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
221 g_debug("load_texture: %d", marker->tex);
222 _gis_opengl_end(self);
226 static void _unload_object(GisOpenGL *self, GisObject *object)
228 g_debug("GisOpenGL: unload_object");
229 if (GIS_IS_MARKER(object)) {
230 GisMarker *marker = GIS_MARKER(object);
231 g_debug("delete_texture: %d", marker->tex);
232 glDeleteTextures(1, &marker->tex);
240 /* The unsorted/sroted GLists are blank head nodes,
241 * This way us we can remove objects from the level just by fixing up links
242 * I.e. we don't need to do a lookup to remove an object if we have its GList */
248 static void on_realize(GisOpenGL *self, gpointer _)
250 g_debug("GisOpenGL: on_realize");
252 g_mutex_lock(self->sphere_lock);
253 roam_sphere_update_errors(self->sphere);
254 g_mutex_unlock(self->sphere_lock);
256 static gboolean on_configure(GisOpenGL *self, GdkEventConfigure *event, gpointer _)
258 g_debug("GisOpenGL: on_configure");
259 _gis_opengl_begin(self);
261 double width = GTK_WIDGET(self)->allocation.width;
262 double height = GTK_WIDGET(self)->allocation.height;
264 /* Setup OpenGL Window */
265 glViewport(0, 0, width, height);
266 glMatrixMode(GL_PROJECTION);
268 double ang = atan(height/FOV_DIST);
269 gluPerspective(rad2deg(ang)*2, width/height, 1, 10*EARTH_R);
272 g_mutex_lock(self->sphere_lock);
273 roam_sphere_update_errors(self->sphere);
274 g_mutex_unlock(self->sphere_lock);
277 _gis_opengl_end(self);
281 static gboolean _draw_level(gpointer key, gpointer value, gpointer user_data)
283 g_debug("GisOpenGL: _draw_level - level=%-4d", (int)key);
284 GisOpenGL *self = user_data;
285 struct RenderLevel *level = value;
286 int nsorted = 0, nunsorted = 0;
289 /* Draw opaque objects without sorting */
291 glClear(GL_DEPTH_BUFFER_BIT);
292 for (cur = level->unsorted.next; cur; cur = cur->next, nunsorted++)
293 _draw_object(self, GIS_OBJECT(cur->data));
295 /* Freeze depth buffer and draw transparent objects sorted */
297 //glDepthMask(FALSE);
298 glAlphaFunc(GL_GREATER, 0.1);
299 for (cur = level->sorted.next; cur; cur = cur->next, nsorted++)
300 _draw_object(self, GIS_OBJECT(cur->data));
302 /* TODO: Prune empty levels */
304 g_debug("GisOpenGL: _draw_level - drew %d,%d objects",
309 static gboolean on_expose(GisOpenGL *self, GdkEventExpose *event, gpointer _)
311 g_debug("GisOpenGL: on_expose - begin");
312 _gis_opengl_begin(self);
314 glClear(GL_COLOR_BUFFER_BIT);
318 glColor4f(0.0, 0.0, 9.0, 0.6);
319 glDisable(GL_TEXTURE_2D);
320 glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
321 roam_sphere_draw(self->sphere);
322 //roam_sphere_draw_normals(self->sphere);
324 g_tree_foreach(self->objects, _draw_level, self);
325 if (self->wireframe) {
326 glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
327 roam_sphere_draw(self->sphere);
331 GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
332 gdk_gl_drawable_swap_buffers(gldrawable);
334 _gis_opengl_end(self);
335 g_debug("GisOpenGL: on_expose - end\n");
339 static gboolean on_key_press(GisOpenGL *self, GdkEventKey *event, gpointer _)
341 g_debug("GisOpenGL: on_key_press - key=%x, state=%x, plus=%x",
342 event->keyval, event->state, GDK_plus);
344 guint kv = event->keyval;
348 self->wireframe = !self->wireframe;
349 gtk_widget_queue_draw(GTK_WIDGET(self));
352 else if (kv == GDK_n) roam_sphere_split_one(self->sphere);
353 else if (kv == GDK_p) roam_sphere_merge_one(self->sphere);
354 else if (kv == GDK_r) roam_sphere_split_merge(self->sphere);
355 else if (kv == GDK_u) roam_sphere_update_errors(self->sphere);
357 gtk_widget_queue_draw(GTK_WIDGET(self));
364 static gboolean _update_errors_cb(gpointer sphere)
366 roam_sphere_update_errors(sphere);
369 static void on_view_changed(GisOpenGL *self,
370 gdouble _1, gdouble _2, gdouble _3)
372 g_debug("GisOpenGL: on_view_changed");
374 _gis_opengl_begin(self);
377 g_idle_add_full(G_PRIORITY_HIGH_IDLE+30, _update_errors_cb, self->sphere, NULL);
378 //roam_sphere_update_errors(self->sphere);
380 _gis_opengl_end(self);
384 static gboolean on_idle(GisOpenGL *self)
386 //g_debug("GisOpenGL: on_idle");
388 _gis_opengl_begin(self);
389 g_mutex_lock(self->sphere_lock);
390 if (roam_sphere_split_merge(self->sphere))
391 gtk_widget_queue_draw(GTK_WIDGET(self));
392 g_mutex_unlock(self->sphere_lock);
393 _gis_opengl_end(self);
399 /*********************
400 * GisViewer methods *
401 *********************/
402 GisViewer *gis_opengl_new(GisPlugins *plugins, GisPrefs *prefs)
404 g_debug("GisOpenGL: new");
405 GisViewer *self = g_object_new(GIS_TYPE_OPENGL, NULL);
406 gis_viewer_setup(self, plugins, prefs);
410 static void gis_opengl_center_position(GisViewer *_self, gdouble lat, gdouble lon, gdouble elev)
412 GisOpenGL *self = GIS_OPENGL(_self);
413 glRotatef(lon, 0, 1, 0);
414 glRotatef(-lat, 1, 0, 0);
415 glTranslatef(0, 0, elev2rad(elev));
418 static void gis_opengl_project(GisViewer *_self,
419 gdouble lat, gdouble lon, gdouble elev,
420 gdouble *px, gdouble *py, gdouble *pz)
422 GisOpenGL *self = GIS_OPENGL(_self);
424 lle2xyz(lat, lon, elev, &x, &y, &z);
426 self->sphere->view->model,
427 self->sphere->view->proj,
428 self->sphere->view->view,
432 static void gis_opengl_render_tile(GisViewer *_self, GisTile *tile)
434 GisOpenGL *self = GIS_OPENGL(_self);
435 if (!tile || !tile->data)
437 GList *triangles = roam_sphere_get_intersect(self->sphere, FALSE,
438 tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
440 g_warning("GisOpenGL: render_tiles - No triangles to draw: edges=%f,%f,%f,%f",
441 tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
442 //g_message("rendering %4d triangles for tile edges=%7.2f,%7.2f,%7.2f,%7.2f",
443 // g_list_length(triangles), tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
444 for (GList *cur = triangles; cur; cur = cur->next) {
445 RoamTriangle *tri = cur->data;
447 gdouble lat[3] = {tri->p.r->lat, tri->p.m->lat, tri->p.l->lat};
448 gdouble lon[3] = {tri->p.r->lon, tri->p.m->lon, tri->p.l->lon};
450 if (lon[0] < -90 || lon[1] < -90 || lon[2] < -90) {
451 if (lon[0] > 90) lon[0] -= 360;
452 if (lon[1] > 90) lon[1] -= 360;
453 if (lon[2] > 90) lon[2] -= 360;
456 gdouble n = tile->edge.n;
457 gdouble s = tile->edge.s;
458 gdouble e = tile->edge.e;
459 gdouble w = tile->edge.w;
461 gdouble londist = e - w;
462 gdouble latdist = n - s;
465 {(lon[0]-w)/londist, 1-(lat[0]-s)/latdist},
466 {(lon[1]-w)/londist, 1-(lat[1]-s)/latdist},
467 {(lon[2]-w)/londist, 1-(lat[2]-s)/latdist},
470 //if ((lat[0] == 90 && (xy[0][0] < 0 || xy[0][0] > 1)) ||
471 // (lat[1] == 90 && (xy[1][0] < 0 || xy[1][0] > 1)) ||
472 // (lat[2] == 90 && (xy[2][0] < 0 || xy[2][0] > 1)))
473 // g_message("w,e=%4.f,%4.f "
475 // "%4.1f,%4.0f,%4.2f,%4.2f "
476 // "%4.1f,%4.0f,%4.2f,%4.2f "
477 // "%4.1f,%4.0f,%4.2f,%4.2f ",
479 // lat[0], lon[0], xy[0][0], xy[0][1],
480 // lat[1], lon[1], xy[1][0], xy[1][1],
481 // lat[2], lon[2], xy[2][0], xy[2][1]);
484 if (lat[0] == 90 || lat[0] == -90) xy[0][0] = 0.5;
485 if (lat[1] == 90 || lat[1] == -90) xy[1][0] = 0.5;
486 if (lat[2] == 90 || lat[2] == -90) xy[2][0] = 0.5;
488 glEnable(GL_TEXTURE_2D);
489 glBindTexture(GL_TEXTURE_2D, *(guint*)tile->data);
490 glBegin(GL_TRIANGLES);
491 glNormal3dv(tri->p.r->norm); glTexCoord2dv(xy[0]); glVertex3dv((double*)tri->p.r);
492 glNormal3dv(tri->p.m->norm); glTexCoord2dv(xy[1]); glVertex3dv((double*)tri->p.m);
493 glNormal3dv(tri->p.l->norm); glTexCoord2dv(xy[2]); glVertex3dv((double*)tri->p.l);
496 g_list_free(triangles);
499 static void gis_opengl_render_tiles(GisViewer *_self, GisTile *tile)
501 GisOpenGL *self = GIS_OPENGL(_self);
502 /* Only render children if possible */
503 gboolean has_children = TRUE;
505 gis_tile_foreach(tile, child)
506 if (!child || !child->data)
507 has_children = FALSE;
509 /* Only render children */
510 gis_tile_foreach(tile, child)
511 gis_opengl_render_tiles(_self, child);
513 /* No children, render this tile */
514 gis_opengl_render_tile(_self, tile);
517 static void gis_opengl_set_height_func(GisViewer *_self, GisTile *tile,
518 RoamHeightFunc height_func, gpointer user_data, gboolean update)
520 GisOpenGL *self = GIS_OPENGL(_self);
523 /* TODO: get points? */
524 g_mutex_lock(self->sphere_lock);
525 GList *triangles = roam_sphere_get_intersect(self->sphere, TRUE,
526 tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
527 for (GList *cur = triangles; cur; cur = cur->next) {
528 RoamTriangle *tri = cur->data;
529 RoamPoint *points[] = {tri->p.l, tri->p.m, tri->p.r, tri->split};
530 for (int i = 0; i < G_N_ELEMENTS(points); i++) {
531 if (tile->edge.n >= points[i]->lat && points[i]->lat >= tile->edge.s &&
532 tile->edge.e >= points[i]->lon && points[i]->lon >= tile->edge.w) {
533 points[i]->height_func = height_func;
534 points[i]->height_data = user_data;
535 roam_point_update_height(points[i]);
539 g_list_free(triangles);
540 g_mutex_unlock(self->sphere_lock);
543 static void _gis_opengl_clear_height_func_rec(RoamTriangle *root)
547 RoamPoint *points[] = {root->p.l, root->p.m, root->p.r, root->split};
548 for (int i = 0; i < G_N_ELEMENTS(points); i++) {
549 points[i]->height_func = NULL;
550 points[i]->height_data = NULL;
551 roam_point_update_height(points[i]);
553 _gis_opengl_clear_height_func_rec(root->kids[0]);
554 _gis_opengl_clear_height_func_rec(root->kids[1]);
557 static void gis_opengl_clear_height_func(GisViewer *_self)
559 GisOpenGL *self = GIS_OPENGL(_self);
560 for (int i = 0; i < G_N_ELEMENTS(self->sphere->roots); i++)
561 _gis_opengl_clear_height_func_rec(self->sphere->roots[i]);
564 static void gis_opengl_begin(GisViewer *_self)
566 g_assert(GIS_IS_OPENGL(_self));
567 _gis_opengl_begin(GIS_OPENGL(_self));
570 static void gis_opengl_end(GisViewer *_self)
572 g_assert(GIS_IS_OPENGL(_self));
573 _gis_opengl_end(GIS_OPENGL(_self));
576 static gpointer gis_opengl_add(GisViewer *_self, GisObject *object,
577 gint key, gboolean sort)
579 g_assert(GIS_IS_OPENGL(_self));
580 GisOpenGL *self = GIS_OPENGL(_self);
581 _load_object(self, object);
582 struct RenderLevel *level = g_tree_lookup(self->objects, (gpointer)key);
584 level = g_new0(struct RenderLevel, 1);
585 g_tree_insert(self->objects, (gpointer)key, level);
587 GList *list = sort ? &level->sorted : &level->unsorted;
588 list->next = g_list_prepend(list->next, object);
592 static void gis_opengl_remove(GisViewer *_self, gpointer _link)
594 g_assert(GIS_IS_OPENGL(_self));
596 GisOpenGL *self = GIS_OPENGL(_self);
597 _unload_object(self, link->data);
598 /* Just unlink and free it (blowup link to avoid warnings) */
599 link = g_list_delete_link(NULL, link);
605 static int _objects_cmp(gconstpointer _a, gconstpointer _b)
607 gint a = (int)_a, b = (int)_b;
612 G_DEFINE_TYPE(GisOpenGL, gis_opengl, GIS_TYPE_VIEWER);
613 static void gis_opengl_init(GisOpenGL *self)
615 g_debug("GisOpenGL: init");
617 GdkGLConfig *glconfig = gdk_gl_config_new_by_mode(
618 GDK_GL_MODE_RGBA | GDK_GL_MODE_DEPTH |
619 GDK_GL_MODE_DOUBLE | GDK_GL_MODE_ALPHA);
621 g_error("Failed to create glconfig");
622 if (!gtk_widget_set_gl_capability(GTK_WIDGET(self),
623 glconfig, NULL, TRUE, GDK_GL_RGBA_TYPE))
624 g_error("GL lacks required capabilities");
625 g_object_unref(glconfig);
627 gtk_widget_set_size_request(GTK_WIDGET(self), 600, 550);
628 gtk_widget_set_events(GTK_WIDGET(self),
629 GDK_BUTTON_PRESS_MASK |
630 GDK_ENTER_NOTIFY_MASK |
632 g_object_set(self, "can-focus", TRUE, NULL);
634 self->objects = g_tree_new(_objects_cmp);
635 self->sphere = roam_sphere_new(self);
636 self->sphere_lock = g_mutex_new();
639 self->sm_source[0] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+30, 33, (GSourceFunc)on_idle, self, NULL);
640 self->sm_source[1] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+10, 500, (GSourceFunc)on_idle, self, NULL);
643 g_signal_connect(self, "realize", G_CALLBACK(on_realize), NULL);
644 g_signal_connect(self, "configure-event", G_CALLBACK(on_configure), NULL);
645 g_signal_connect(self, "expose-event", G_CALLBACK(on_expose), NULL);
647 g_signal_connect(self, "key-press-event", G_CALLBACK(on_key_press), NULL);
649 g_signal_connect(self, "location-changed", G_CALLBACK(on_view_changed), NULL);
650 g_signal_connect(self, "rotation-changed", G_CALLBACK(on_view_changed), NULL);
652 static void gis_opengl_dispose(GObject *_self)
654 g_debug("GisOpenGL: dispose");
655 GisOpenGL *self = GIS_OPENGL(_self);
656 if (self->sm_source[0]) {
657 g_source_remove(self->sm_source[0]);
658 self->sm_source[0] = 0;
660 if (self->sm_source[1]) {
661 g_source_remove(self->sm_source[1]);
662 self->sm_source[1] = 0;
664 /* TODO: Cleanup/free objects tree */
665 G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(_self);
667 static void gis_opengl_finalize(GObject *_self)
669 g_debug("GisViewer: finalize");
670 GisOpenGL *self = GIS_OPENGL(_self);
671 roam_sphere_free(self->sphere);
672 g_mutex_free(self->sphere_lock);
673 G_OBJECT_CLASS(gis_opengl_parent_class)->finalize(_self);
675 static void gis_opengl_class_init(GisOpenGLClass *klass)
677 g_debug("GisOpenGL: class_init");
678 GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
679 gobject_class->dispose = gis_opengl_dispose;
681 GisViewerClass *viewer_class = GIS_VIEWER_CLASS(klass);
682 viewer_class->center_position = gis_opengl_center_position;
683 viewer_class->project = gis_opengl_project;
684 viewer_class->clear_height_func = gis_opengl_clear_height_func;
685 viewer_class->set_height_func = gis_opengl_set_height_func;
686 viewer_class->render_tile = gis_opengl_render_tile;
687 viewer_class->render_tiles = gis_opengl_render_tiles;
688 viewer_class->begin = gis_opengl_begin;
689 viewer_class->end = gis_opengl_end;
690 viewer_class->add = gis_opengl_add;
691 viewer_class->remove = gis_opengl_remove;