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"
35 #include "objects/gis-object.h"
36 #include "objects/gis-marker.h"
37 #include "objects/gis-callback.h"
39 #define FOV_DIST 2000.0
40 #define MPPX(dist) (4*dist/FOV_DIST)
47 static void _gis_opengl_begin(GisOpenGL *self)
49 g_assert(GIS_IS_OPENGL(self));
51 GdkGLContext *glcontext = gtk_widget_get_gl_context(GTK_WIDGET(self));
52 GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
54 if (!gdk_gl_drawable_gl_begin(gldrawable, glcontext))
55 g_assert_not_reached();
58 static void _gis_opengl_end(GisOpenGL *self)
60 g_assert(GIS_IS_OPENGL(self));
61 GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
62 gdk_gl_drawable_gl_end(gldrawable);
65 static void _set_visuals(GisOpenGL *self)
67 glMatrixMode(GL_MODELVIEW);
71 double lat, lon, elev, rx, ry, rz;
72 gis_viewer_get_location(GIS_VIEWER(self), &lat, &lon, &elev);
73 gis_viewer_get_rotation(GIS_VIEWER(self), &rx, &ry, &rz);
74 glRotatef(rx, 1, 0, 0);
75 glRotatef(rz, 0, 0, 1);
79 float light_ambient[] = {0.7f, 0.7f, 0.7f, 1.0f};
80 float light_diffuse[] = {2.0f, 2.0f, 2.0f, 1.0f};
82 float light_ambient[] = {0.2f, 0.2f, 0.2f, 1.0f};
83 float light_diffuse[] = {5.0f, 5.0f, 5.0f, 1.0f};
85 float light_position[] = {-13*EARTH_R, 1*EARTH_R, 3*EARTH_R, 1.0f};
86 glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
87 glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
88 glLightfv(GL_LIGHT0, GL_POSITION, light_position);
90 glEnable(GL_LIGHTING);
92 float material_ambient[] = {0.2, 0.2, 0.2, 1.0};
93 float material_diffuse[] = {0.8, 0.8, 0.8, 1.0};
94 float material_specular[] = {0.1, 0.1, 0.1, 1.0};
95 float material_emission[] = {0.0, 0.0, 0.0, 1.0};
96 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, material_ambient);
97 glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, material_diffuse);
98 glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, material_specular);
99 glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, material_emission);
100 glDisable(GL_TEXTURE_2D);
101 glDisable(GL_COLOR_MATERIAL);
104 glTranslatef(0, 0, -elev2rad(elev));
105 glRotatef(lat, 1, 0, 0);
106 glRotatef(-lon, 0, 1, 0);
108 glDisable(GL_ALPHA_TEST);
110 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
115 glEnable(GL_CULL_FACE);
119 glDepthFunc(GL_LEQUAL);
120 glEnable(GL_DEPTH_TEST);
122 glEnable(GL_LINE_SMOOTH);
124 glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
125 //glShadeModel(GL_FLAT);
127 roam_sphere_update_view(self->sphere);
131 /********************
133 ********************/
134 static void _draw_tile(GisOpenGL *self, GisTile *tile)
136 if (!tile || !tile->data)
138 GList *triangles = roam_sphere_get_intersect(self->sphere, FALSE,
139 tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
141 g_warning("GisOpenGL: _draw_tiles - No triangles to draw: edges=%f,%f,%f,%f",
142 tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
143 //g_message("drawing %4d triangles for tile edges=%7.2f,%7.2f,%7.2f,%7.2f",
144 // g_list_length(triangles), tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
145 for (GList *cur = triangles; cur; cur = cur->next) {
146 RoamTriangle *tri = cur->data;
148 gdouble lat[3] = {tri->p.r->lat, tri->p.m->lat, tri->p.l->lat};
149 gdouble lon[3] = {tri->p.r->lon, tri->p.m->lon, tri->p.l->lon};
151 if (lon[0] < -90 || lon[1] < -90 || lon[2] < -90) {
152 if (lon[0] > 90) lon[0] -= 360;
153 if (lon[1] > 90) lon[1] -= 360;
154 if (lon[2] > 90) lon[2] -= 360;
157 gdouble n = tile->edge.n;
158 gdouble s = tile->edge.s;
159 gdouble e = tile->edge.e;
160 gdouble w = tile->edge.w;
162 gdouble londist = e - w;
163 gdouble latdist = n - s;
166 {(lon[0]-w)/londist, 1-(lat[0]-s)/latdist},
167 {(lon[1]-w)/londist, 1-(lat[1]-s)/latdist},
168 {(lon[2]-w)/londist, 1-(lat[2]-s)/latdist},
171 //if ((lat[0] == 90 && (xy[0][0] < 0 || xy[0][0] > 1)) ||
172 // (lat[1] == 90 && (xy[1][0] < 0 || xy[1][0] > 1)) ||
173 // (lat[2] == 90 && (xy[2][0] < 0 || xy[2][0] > 1)))
174 // g_message("w,e=%4.f,%4.f "
176 // "%4.1f,%4.0f,%4.2f,%4.2f "
177 // "%4.1f,%4.0f,%4.2f,%4.2f "
178 // "%4.1f,%4.0f,%4.2f,%4.2f ",
180 // lat[0], lon[0], xy[0][0], xy[0][1],
181 // lat[1], lon[1], xy[1][0], xy[1][1],
182 // lat[2], lon[2], xy[2][0], xy[2][1]);
185 if (lat[0] == 90 || lat[0] == -90) xy[0][0] = 0.5;
186 if (lat[1] == 90 || lat[1] == -90) xy[1][0] = 0.5;
187 if (lat[2] == 90 || lat[2] == -90) xy[2][0] = 0.5;
189 glEnable(GL_TEXTURE_2D);
190 glBindTexture(GL_TEXTURE_2D, *(guint*)tile->data);
191 glBegin(GL_TRIANGLES);
192 glNormal3dv(tri->p.r->norm); glTexCoord2dv(xy[0]); glVertex3dv((double*)tri->p.r);
193 glNormal3dv(tri->p.m->norm); glTexCoord2dv(xy[1]); glVertex3dv((double*)tri->p.m);
194 glNormal3dv(tri->p.l->norm); glTexCoord2dv(xy[2]); glVertex3dv((double*)tri->p.l);
197 g_list_free(triangles);
200 static void _draw_tiles(GisOpenGL *self, GisTile *tile)
202 /* Only draw children if possible */
203 gboolean has_children = TRUE;
205 gis_tile_foreach(tile, child)
206 if (!child || !child->data)
207 has_children = FALSE;
209 /* Only draw children */
210 gis_tile_foreach(tile, child)
211 _draw_tiles(self, child);
213 /* No children, draw this tile */
214 _draw_tile(self, tile);
217 static void _draw_marker(GisOpenGL *self, GisMarker *marker)
219 GisPoint *point = gis_object_center(GIS_OBJECT(marker));
221 gis_viewer_project(GIS_VIEWER(self),
222 point->lat, point->lon, point->elev,
227 //g_debug("GisOpenGL: draw_marker - %s pz=%f ", marker->label, pz);
229 cairo_surface_t *surface = cairo_get_target(marker->cairo);
230 gdouble width = cairo_image_surface_get_width(surface);
231 gdouble height = cairo_image_surface_get_height(surface);
233 glMatrixMode(GL_PROJECTION); glLoadIdentity();
234 glMatrixMode(GL_MODELVIEW); glLoadIdentity();
235 glOrtho(0, GTK_WIDGET(self)->allocation.width,
236 0, GTK_WIDGET(self)->allocation.height, -1, 1);
237 glTranslated(px - marker->xoff,
238 py - marker->yoff, 0);
240 glDisable(GL_LIGHTING);
241 glDisable(GL_COLOR_MATERIAL);
242 glDisable(GL_DEPTH_TEST);
243 glEnable(GL_TEXTURE_2D);
244 glBindTexture(GL_TEXTURE_2D, marker->tex);
246 glTexCoord2f(1, 1); glVertex3f(width, 0 , 0);
247 glTexCoord2f(1, 0); glVertex3f(width, height, 0);
248 glTexCoord2f(0, 0); glVertex3f(0 , height, 0);
249 glTexCoord2f(0, 1); glVertex3f(0 , 0 , 0);
253 static void _draw_callback(GisOpenGL *self, GisCallback *callback)
255 callback->callback(callback, callback->user_data);
258 static void _draw_object(GisOpenGL *self, GisObject *object)
260 //g_debug("GisOpenGL: draw_object");
261 /* Skip out of range objects */
262 if (object->lod > 0) {
263 gdouble eye[3], obj[3];
264 gis_viewer_get_location(GIS_VIEWER(self), &eye[0], &eye[1], &eye[2]);
265 lle2xyz(eye[0], eye[1], eye[2], &eye[0], &eye[1], &eye[2]);
266 lle2xyz(object->center.lat, object->center.lon, object->center.elev,
267 &obj[0], &obj[1], &obj[2]);
268 gdouble dist = distd(obj, eye);
269 if (object->lod < dist)
274 glMatrixMode(GL_PROJECTION); glPushMatrix();
275 glMatrixMode(GL_MODELVIEW); glPushMatrix();
276 glPushAttrib(GL_ALL_ATTRIB_BITS);
277 if (GIS_IS_MARKER(object)) {
278 _draw_marker(self, GIS_MARKER(object));
279 } else if (GIS_IS_CALLBACK(object)) {
280 _draw_callback(self, GIS_CALLBACK(object));
281 } else if (GIS_IS_TILE(object)) {
282 _draw_tiles(self, GIS_TILE(object));
285 glMatrixMode(GL_PROJECTION); glPopMatrix();
286 glMatrixMode(GL_MODELVIEW); glPopMatrix();
289 static void _load_object(GisOpenGL *self, GisObject *object)
291 g_debug("GisOpenGL: load_object");
292 if (GIS_IS_MARKER(object)) {
293 GisMarker *marker = GIS_MARKER(object);
294 cairo_surface_t *surface = cairo_get_target(marker->cairo);
295 gdouble width = cairo_image_surface_get_width(surface);
296 gdouble height = cairo_image_surface_get_height(surface);
298 _gis_opengl_begin(self);
299 glEnable(GL_TEXTURE_2D);
300 glGenTextures(1, &marker->tex);
301 glBindTexture(GL_TEXTURE_2D, marker->tex);
303 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
304 glPixelStorei(GL_PACK_ALIGNMENT, 1);
305 glTexImage2D(GL_TEXTURE_2D, 0, 4, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE,
306 cairo_image_surface_get_data(surface));
307 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
308 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
309 g_debug("load_texture: %d", marker->tex);
310 _gis_opengl_end(self);
314 static void _unload_object(GisOpenGL *self, GisObject *object)
316 g_debug("GisOpenGL: unload_object");
317 if (GIS_IS_MARKER(object)) {
318 GisMarker *marker = GIS_MARKER(object);
319 g_debug("delete_texture: %d", marker->tex);
320 glDeleteTextures(1, &marker->tex);
328 /* The unsorted/sroted GLists are blank head nodes,
329 * This way us we can remove objects from the level just by fixing up links
330 * I.e. we don't need to do a lookup to remove an object if we have its GList */
336 static void on_realize(GisOpenGL *self, gpointer _)
338 g_debug("GisOpenGL: on_realize");
340 g_mutex_lock(self->sphere_lock);
341 roam_sphere_update_errors(self->sphere);
342 g_mutex_unlock(self->sphere_lock);
344 static gboolean on_configure(GisOpenGL *self, GdkEventConfigure *event, gpointer _)
346 g_debug("GisOpenGL: on_configure");
347 _gis_opengl_begin(self);
349 double width = GTK_WIDGET(self)->allocation.width;
350 double height = GTK_WIDGET(self)->allocation.height;
352 /* Setup OpenGL Window */
353 glViewport(0, 0, width, height);
354 glMatrixMode(GL_PROJECTION);
356 double ang = atan(height/FOV_DIST);
357 gluPerspective(rad2deg(ang)*2, width/height, 1, 10*EARTH_R);
360 g_mutex_lock(self->sphere_lock);
361 roam_sphere_update_errors(self->sphere);
362 g_mutex_unlock(self->sphere_lock);
365 _gis_opengl_end(self);
369 static gboolean _draw_level(gpointer key, gpointer value, gpointer user_data)
371 g_debug("GisOpenGL: _draw_level - level=%-4d", (int)key);
372 GisOpenGL *self = user_data;
373 struct RenderLevel *level = value;
374 int nsorted = 0, nunsorted = 0;
377 /* Draw opaque objects without sorting */
379 glClear(GL_DEPTH_BUFFER_BIT);
380 for (cur = level->unsorted.next; cur; cur = cur->next, nunsorted++)
381 _draw_object(self, GIS_OBJECT(cur->data));
383 /* Freeze depth buffer and draw transparent objects sorted */
385 //glDepthMask(FALSE);
386 glAlphaFunc(GL_GREATER, 0.1);
387 for (cur = level->sorted.next; cur; cur = cur->next, nsorted++)
388 _draw_object(self, GIS_OBJECT(cur->data));
390 /* TODO: Prune empty levels */
392 g_debug("GisOpenGL: _draw_level - drew %d,%d objects",
397 static gboolean on_expose(GisOpenGL *self, GdkEventExpose *event, gpointer _)
399 g_debug("GisOpenGL: on_expose - begin");
400 _gis_opengl_begin(self);
402 glClear(GL_COLOR_BUFFER_BIT);
406 glColor4f(0.0, 0.0, 9.0, 0.6);
407 glDisable(GL_TEXTURE_2D);
408 glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
409 roam_sphere_draw(self->sphere);
410 //roam_sphere_draw_normals(self->sphere);
412 g_tree_foreach(self->objects, _draw_level, self);
413 if (self->wireframe) {
414 glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
415 roam_sphere_draw(self->sphere);
419 GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
420 gdk_gl_drawable_swap_buffers(gldrawable);
422 _gis_opengl_end(self);
423 g_debug("GisOpenGL: on_expose - end\n");
427 static gboolean on_key_press(GisOpenGL *self, GdkEventKey *event, gpointer _)
429 g_debug("GisOpenGL: on_key_press - key=%x, state=%x, plus=%x",
430 event->keyval, event->state, GDK_plus);
432 guint kv = event->keyval;
436 self->wireframe = !self->wireframe;
437 gtk_widget_queue_draw(GTK_WIDGET(self));
440 else if (kv == GDK_n) roam_sphere_split_one(self->sphere);
441 else if (kv == GDK_p) roam_sphere_merge_one(self->sphere);
442 else if (kv == GDK_r) roam_sphere_split_merge(self->sphere);
443 else if (kv == GDK_u) roam_sphere_update_errors(self->sphere);
445 gtk_widget_queue_draw(GTK_WIDGET(self));
452 static gboolean _update_errors_cb(gpointer sphere)
454 roam_sphere_update_errors(sphere);
457 static void on_view_changed(GisOpenGL *self,
458 gdouble _1, gdouble _2, gdouble _3)
460 g_debug("GisOpenGL: on_view_changed");
462 _gis_opengl_begin(self);
465 g_idle_add_full(G_PRIORITY_HIGH_IDLE+30, _update_errors_cb, self->sphere, NULL);
466 //roam_sphere_update_errors(self->sphere);
468 _gis_opengl_end(self);
472 static gboolean on_idle(GisOpenGL *self)
474 //g_debug("GisOpenGL: on_idle");
476 _gis_opengl_begin(self);
477 g_mutex_lock(self->sphere_lock);
478 if (roam_sphere_split_merge(self->sphere))
479 gtk_widget_queue_draw(GTK_WIDGET(self));
480 g_mutex_unlock(self->sphere_lock);
481 _gis_opengl_end(self);
487 /*********************
488 * GisViewer methods *
489 *********************/
490 GisViewer *gis_opengl_new(GisPlugins *plugins, GisPrefs *prefs)
492 g_debug("GisOpenGL: new");
493 GisViewer *self = g_object_new(GIS_TYPE_OPENGL, NULL);
494 gis_viewer_setup(self, plugins, prefs);
498 static void gis_opengl_center_position(GisViewer *_self, gdouble lat, gdouble lon, gdouble elev)
500 GisOpenGL *self = GIS_OPENGL(_self);
501 glRotatef(lon, 0, 1, 0);
502 glRotatef(-lat, 1, 0, 0);
503 glTranslatef(0, 0, elev2rad(elev));
506 static void gis_opengl_project(GisViewer *_self,
507 gdouble lat, gdouble lon, gdouble elev,
508 gdouble *px, gdouble *py, gdouble *pz)
510 GisOpenGL *self = GIS_OPENGL(_self);
512 lle2xyz(lat, lon, elev, &x, &y, &z);
514 self->sphere->view->model,
515 self->sphere->view->proj,
516 self->sphere->view->view,
520 static void gis_opengl_set_height_func(GisViewer *_self, GisTile *tile,
521 RoamHeightFunc height_func, gpointer user_data, gboolean update)
523 GisOpenGL *self = GIS_OPENGL(_self);
526 /* TODO: get points? */
527 g_mutex_lock(self->sphere_lock);
528 GList *triangles = roam_sphere_get_intersect(self->sphere, TRUE,
529 tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
530 for (GList *cur = triangles; cur; cur = cur->next) {
531 RoamTriangle *tri = cur->data;
532 RoamPoint *points[] = {tri->p.l, tri->p.m, tri->p.r, tri->split};
533 for (int i = 0; i < G_N_ELEMENTS(points); i++) {
534 if (tile->edge.n >= points[i]->lat && points[i]->lat >= tile->edge.s &&
535 tile->edge.e >= points[i]->lon && points[i]->lon >= tile->edge.w) {
536 points[i]->height_func = height_func;
537 points[i]->height_data = user_data;
538 roam_point_update_height(points[i]);
542 g_list_free(triangles);
543 g_mutex_unlock(self->sphere_lock);
546 static void _gis_opengl_clear_height_func_rec(RoamTriangle *root)
550 RoamPoint *points[] = {root->p.l, root->p.m, root->p.r, root->split};
551 for (int i = 0; i < G_N_ELEMENTS(points); i++) {
552 points[i]->height_func = NULL;
553 points[i]->height_data = NULL;
554 roam_point_update_height(points[i]);
556 _gis_opengl_clear_height_func_rec(root->kids[0]);
557 _gis_opengl_clear_height_func_rec(root->kids[1]);
560 static void gis_opengl_clear_height_func(GisViewer *_self)
562 GisOpenGL *self = GIS_OPENGL(_self);
563 for (int i = 0; i < G_N_ELEMENTS(self->sphere->roots); i++)
564 _gis_opengl_clear_height_func_rec(self->sphere->roots[i]);
567 static void gis_opengl_begin(GisViewer *_self)
569 g_assert(GIS_IS_OPENGL(_self));
570 _gis_opengl_begin(GIS_OPENGL(_self));
573 static void gis_opengl_end(GisViewer *_self)
575 g_assert(GIS_IS_OPENGL(_self));
576 _gis_opengl_end(GIS_OPENGL(_self));
579 static gpointer gis_opengl_add(GisViewer *_self, GisObject *object,
580 gint key, gboolean sort)
582 g_assert(GIS_IS_OPENGL(_self));
583 GisOpenGL *self = GIS_OPENGL(_self);
584 _load_object(self, object);
585 struct RenderLevel *level = g_tree_lookup(self->objects, (gpointer)key);
587 level = g_new0(struct RenderLevel, 1);
588 g_tree_insert(self->objects, (gpointer)key, level);
590 GList *list = sort ? &level->sorted : &level->unsorted;
591 list->next = g_list_prepend(list->next, object);
595 static void gis_opengl_remove(GisViewer *_self, gpointer _link)
597 g_assert(GIS_IS_OPENGL(_self));
599 GisOpenGL *self = GIS_OPENGL(_self);
600 _unload_object(self, link->data);
601 /* Just unlink and free it (blowup link to avoid warnings) */
602 link = g_list_delete_link(NULL, link);
608 static int _objects_cmp(gconstpointer _a, gconstpointer _b)
610 gint a = (int)_a, b = (int)_b;
615 G_DEFINE_TYPE(GisOpenGL, gis_opengl, GIS_TYPE_VIEWER);
616 static void gis_opengl_init(GisOpenGL *self)
618 g_debug("GisOpenGL: init");
620 GdkGLConfig *glconfig = gdk_gl_config_new_by_mode(
621 GDK_GL_MODE_RGBA | GDK_GL_MODE_DEPTH |
622 GDK_GL_MODE_DOUBLE | GDK_GL_MODE_ALPHA);
624 g_error("Failed to create glconfig");
625 if (!gtk_widget_set_gl_capability(GTK_WIDGET(self),
626 glconfig, NULL, TRUE, GDK_GL_RGBA_TYPE))
627 g_error("GL lacks required capabilities");
628 g_object_unref(glconfig);
630 gtk_widget_set_size_request(GTK_WIDGET(self), 600, 550);
631 gtk_widget_set_events(GTK_WIDGET(self),
632 GDK_BUTTON_PRESS_MASK |
633 GDK_ENTER_NOTIFY_MASK |
635 g_object_set(self, "can-focus", TRUE, NULL);
637 self->objects = g_tree_new(_objects_cmp);
638 self->sphere = roam_sphere_new(self);
639 self->sphere_lock = g_mutex_new();
642 self->sm_source[0] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+30, 33, (GSourceFunc)on_idle, self, NULL);
643 self->sm_source[1] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+10, 500, (GSourceFunc)on_idle, self, NULL);
646 g_signal_connect(self, "realize", G_CALLBACK(on_realize), NULL);
647 g_signal_connect(self, "configure-event", G_CALLBACK(on_configure), NULL);
648 g_signal_connect(self, "expose-event", G_CALLBACK(on_expose), NULL);
650 g_signal_connect(self, "key-press-event", G_CALLBACK(on_key_press), NULL);
652 g_signal_connect(self, "location-changed", G_CALLBACK(on_view_changed), NULL);
653 g_signal_connect(self, "rotation-changed", G_CALLBACK(on_view_changed), NULL);
655 static void gis_opengl_dispose(GObject *_self)
657 g_debug("GisOpenGL: dispose");
658 GisOpenGL *self = GIS_OPENGL(_self);
659 if (self->sm_source[0]) {
660 g_source_remove(self->sm_source[0]);
661 self->sm_source[0] = 0;
663 if (self->sm_source[1]) {
664 g_source_remove(self->sm_source[1]);
665 self->sm_source[1] = 0;
667 /* TODO: Cleanup/free objects tree */
668 G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(_self);
670 static void gis_opengl_finalize(GObject *_self)
672 g_debug("GisViewer: finalize");
673 GisOpenGL *self = GIS_OPENGL(_self);
674 roam_sphere_free(self->sphere);
675 g_mutex_free(self->sphere_lock);
676 G_OBJECT_CLASS(gis_opengl_parent_class)->finalize(_self);
678 static void gis_opengl_class_init(GisOpenGLClass *klass)
680 g_debug("GisOpenGL: class_init");
681 GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
682 gobject_class->dispose = gis_opengl_dispose;
684 GisViewerClass *viewer_class = GIS_VIEWER_CLASS(klass);
685 viewer_class->center_position = gis_opengl_center_position;
686 viewer_class->project = gis_opengl_project;
687 viewer_class->clear_height_func = gis_opengl_clear_height_func;
688 viewer_class->set_height_func = gis_opengl_set_height_func;
689 viewer_class->begin = gis_opengl_begin;
690 viewer_class->end = gis_opengl_end;
691 viewer_class->add = gis_opengl_add;
692 viewer_class->remove = gis_opengl_remove;