glEnd();
}
+static void _draw_callback(GisOpenGL *self, GisCallback *callback)
+{
+ callback->callback(callback, callback->user_data);
+}
-static void _draw_objects(GisOpenGL *self)
-{
- g_debug("GisOpenGL: draw_objects");
- /* Draw objects */
- for (GList *cur = self->objects; cur; cur = cur->next) {
- glMatrixMode(GL_PROJECTION); glPushMatrix();
- glMatrixMode(GL_MODELVIEW); glPushMatrix();
- GisObject *object = cur->data;
- switch (object->type) {
- case GIS_TYPE_MARKER:
- _draw_marker(self, GIS_MARKER(object));
- break;
- default:
- break;
- }
- glMatrixMode(GL_PROJECTION); glPopMatrix();
- glMatrixMode(GL_MODELVIEW); glPopMatrix();
+static void _draw_object(GisOpenGL *self, GisObject *object)
+{
+ //g_debug("GisOpenGL: draw_object");
+ /* Skip out of range objects */
+ if (object->lod > 0) {
+ gdouble eye[3], obj[3];
+ gis_viewer_get_location(GIS_VIEWER(self), &eye[0], &eye[1], &eye[2]);
+ lle2xyz(eye[0], eye[1], eye[2], &eye[0], &eye[1], &eye[2]);
+ lle2xyz(object->center.lat, object->center.lon, object->center.elev,
+ &obj[0], &obj[1], &obj[2]);
+ gdouble dist = distd(obj, eye);
+ if (object->lod < dist)
+ return;
+ }
+
+ /* Draw */
+ glMatrixMode(GL_PROJECTION); glPushMatrix();
+ glMatrixMode(GL_MODELVIEW); glPushMatrix();
+ glPushAttrib(GL_ALL_ATTRIB_BITS);
+ switch (object->type) {
+ case GIS_TYPE_MARKER:
+ _draw_marker(self, GIS_MARKER(object));
+ break;
+ case GIS_TYPE_CALLBACK:
+ _draw_callback(self, GIS_CALLBACK(object));
+ break;
+ default:
+ break;
}
+ glPopAttrib();
+ glMatrixMode(GL_PROJECTION); glPopMatrix();
+ glMatrixMode(GL_MODELVIEW); glPopMatrix();
}
static void _load_object(GisOpenGL *self, GisObject *object)
}
}
-static void _free_object(GisOpenGL *self, GisObject *object)
+static void _unload_object(GisOpenGL *self, GisObject *object)
{
- g_debug("GisOpenGL: free_object");
+ g_debug("GisOpenGL: unload_object");
switch (object->type) {
case GIS_TYPE_MARKER: {
GisMarker *marker = GIS_MARKER(object);
/*************
* Callbacks *
*************/
+/* The unsorted/sroted GLists are blank head nodes,
+ * This way us we can remove objects from the level just by fixing up links
+ * I.e. we don't need to do a lookup to remove an object if we have its GList */
+struct RenderLevel {
+ GList unsorted;
+ GList sorted;
+};
+
static void on_realize(GisOpenGL *self, gpointer _)
{
g_debug("GisOpenGL: on_realize");
return FALSE;
}
-static void _on_expose_plugin(GisPlugin *plugin, gchar *name, GisOpenGL *self)
+static gboolean _draw_level(gpointer key, gpointer value, gpointer user_data)
{
- _set_visuals(self);
- glMatrixMode(GL_PROJECTION); glPushMatrix();
- glMatrixMode(GL_MODELVIEW); glPushMatrix();
- gis_plugin_expose(plugin);
- glMatrixMode(GL_PROJECTION); glPopMatrix();
- glMatrixMode(GL_MODELVIEW); glPopMatrix();
+ g_debug("GisOpenGL: _draw_level - level=%-4d", (int)key);
+ GisOpenGL *self = user_data;
+ struct RenderLevel *level = value;
+ int nsorted = 0, nunsorted = 0;
+ GList *cur = NULL;
+
+ /* Draw opaque objects without sorting */
+ glDepthMask(TRUE);
+ glClear(GL_DEPTH_BUFFER_BIT);
+ for (cur = level->unsorted.next; cur; cur = cur->next, nunsorted++)
+ _draw_object(self, GIS_OBJECT(cur->data));
+
+ /* Freeze depth buffer and draw transparent objects sorted */
+ /* TODO: sorting */
+ glDepthMask(FALSE);
+ for (cur = level->sorted.next; cur; cur = cur->next, nsorted++)
+ _draw_object(self, GIS_OBJECT(cur->data));
+
+ /* TODO: Prune empty levels */
+
+ g_debug("GisOpenGL: _draw_level - drew %d,%d objects",
+ nunsorted, nsorted);
+ return FALSE;
}
+
static gboolean on_expose(GisOpenGL *self, GdkEventExpose *event, gpointer _)
{
g_debug("GisOpenGL: on_expose - begin");
_gis_opengl_begin(self);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glClear(GL_COLOR_BUFFER_BIT);
#ifndef ROAM_DEBUG
- gis_plugins_foreach(GIS_VIEWER(self)->plugins,
- G_CALLBACK(_on_expose_plugin), self);
- _draw_objects(self);
+ g_tree_foreach(self->objects, _draw_level, self);
if (self->wireframe) {
_set_visuals(self);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
_gis_opengl_end(GIS_OPENGL(_self));
}
-static void gis_opengl_add(GisViewer *_self, GisObject *object)
+static gpointer gis_opengl_add(GisViewer *_self, GisObject *object,
+ gint key, gboolean sort)
{
g_assert(GIS_IS_OPENGL(_self));
GisOpenGL *self = GIS_OPENGL(_self);
_load_object(self, object);
- self->objects = g_list_prepend(self->objects, object);
+ struct RenderLevel *level = g_tree_lookup(self->objects, (gpointer)key);
+ if (!level) {
+ level = g_new0(struct RenderLevel, 1);
+ g_tree_insert(self->objects, (gpointer)key, level);
+ }
+ GList *list = sort ? &level->sorted : &level->unsorted;
+ list->next = g_list_prepend(list->next, object);
+ return list->next;
}
-static void gis_opengl_remove(GisViewer *_self, GisObject *object)
+static void gis_opengl_remove(GisViewer *_self, gpointer _link)
{
g_assert(GIS_IS_OPENGL(_self));
+ GList *link = _link;
GisOpenGL *self = GIS_OPENGL(_self);
- _free_object(self, object);
- self->objects = g_list_remove(self->objects, object);
+ _unload_object(self, link->data);
+ /* Just unlink and free it (blowup link to avoid warnings) */
+ link = g_list_delete_link(NULL, link);
}
/****************
* GObject code *
****************/
+static int _objects_cmp(gconstpointer _a, gconstpointer _b)
+{
+ gint a = (int)_a, b = (int)_b;
+ return a < b ? -1 :
+ a > b ? 1 : 0;
+}
+
G_DEFINE_TYPE(GisOpenGL, gis_opengl, GIS_TYPE_VIEWER);
static void gis_opengl_init(GisOpenGL *self)
{
GDK_KEY_PRESS_MASK);
g_object_set(self, "can-focus", TRUE, NULL);
+ self->objects = g_tree_new(_objects_cmp);
self->sphere = roam_sphere_new(self);
#ifndef ROAM_DEBUG
roam_sphere_free(self->sphere);
self->sphere = NULL;
}
+ /* TODO: Cleanup/free objects tree */
G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(_self);
}
static void gis_opengl_finalize(GObject *_self)
projects / grits / blobdiff