/*
- * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
- *
+ * Copyright (C) 2009-2010 Andy Spencer <andy753421@gmail.com>
+ *
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+/**
+ * SECTION:gis-opengl
+ * @short_description: OpenGL based virtual globe
+ *
+ * #GisOpenGL is the core rendering engine used by libgis. Theoretically other
+ * renderers could be writte, but they have not been. GisOpenGL uses the ROAM
+ * algorithm for updating surface mesh the planet. The only thing GisOpenGL can
+ * actually render on it's own is a wireframe of a sphere.
+ *
+ * GisOpenGL relies on #GtkGlExt and requires (at least) OpenGL 2.0.
+ */
+
#include <config.h>
#include <math.h>
+#include <string.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>
#include <gtk/gtkgl.h>
#include <GL/gl.h>
#include <GL/glu.h>
-#include "misc.h"
-#include "aweather-gui.h"
-#include "gis-world.h"
-#include "gis-view.h"
#include "gis-opengl.h"
+#include "gis-util.h"
+#include "roam.h"
-/****************
- * GObject code *
- ****************/
-G_DEFINE_TYPE(GisOpenGL, gis_opengl, G_TYPE_OBJECT);
-static void gis_opengl_init(GisOpenGL *self)
-{
- g_debug("GisOpenGL: init");
-}
-static GObject *gis_opengl_constructor(GType gtype, guint n_properties,
- GObjectConstructParam *properties)
-{
- g_debug("gis_opengl: constructor");
- GObjectClass *parent_class = G_OBJECT_CLASS(gis_opengl_parent_class);
- return parent_class->constructor(gtype, n_properties, properties);
-}
-static void gis_opengl_dispose(GObject *gobject)
-{
- g_debug("GisOpenGL: dispose");
- GisOpenGL *self = GIS_OPENGL(gobject);
- if (self->world) {
- g_object_unref(self->world);
- self->world = NULL;
- }
- if (self->view) {
- g_object_unref(self->view);
- self->view = NULL;
- }
- if (self->drawing) {
- g_object_unref(self->drawing);
- self->drawing = NULL;
- }
- G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(gobject);
-}
-static void gis_opengl_finalize(GObject *gobject)
-{
- g_debug("GisOpenGL: finalize");
- G_OBJECT_CLASS(gis_opengl_parent_class)->finalize(gobject);
- gtk_main_quit();
+// #define ROAM_DEBUG
-}
-static void gis_opengl_class_init(GisOpenGLClass *klass)
-{
- g_debug("GisOpenGL: class_init");
- GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
- gobject_class->constructor = gis_opengl_constructor;
- gobject_class->dispose = gis_opengl_dispose;
- gobject_class->finalize = gis_opengl_finalize;
-}
+/* Tessellation, "finding intersecting triangles" */
+/* http://research.microsoft.com/pubs/70307/tr-2006-81.pdf */
+/* http://www.opengl.org/wiki/Alpha_Blending */
-/*************
- * Callbacks *
- *************/
-gboolean on_button_press(GtkWidget *widget, GdkEventButton *event, GisOpenGL *self)
-{
- g_debug("GisOpenGL: on_drawing_button_press - Grabbing focus");
- gtk_widget_grab_focus(GTK_WIDGET(self->drawing));
- return TRUE;
-}
-gboolean on_key_press(GtkWidget *widget, GdkEventKey *event, GisOpenGL *self)
+/***********
+ * Helpers *
+ ***********/
+static void _set_visuals(GisOpenGL *opengl)
{
- g_debug("GisOpenGL: on_drawing_key_press - key=%x, state=%x, plus=%x",
- event->keyval, event->state, GDK_plus);
- double x,y,z;
- gis_view_get_location(self->view, &x, &y, &z);
- guint kv = event->keyval;
- if (kv == GDK_Left || kv == GDK_h) gis_view_pan(self->view, -z/10, 0, 0);
- else if (kv == GDK_Down || kv == GDK_j) gis_view_pan(self->view, 0, -z/10, 0);
- else if (kv == GDK_Up || kv == GDK_k) gis_view_pan(self->view, 0, z/10, 0);
- else if (kv == GDK_Right || kv == GDK_l) gis_view_pan(self->view, z/10, 0, 0);
- else if (kv == GDK_minus || kv == GDK_o) gis_view_zoom(self->view, 10./9);
- else if (kv == GDK_plus || kv == GDK_i) gis_view_zoom(self->view, 9./10);
- else if (kv == GDK_H ) gis_view_rotate(self->view, 0, -10, 0);
- else if (kv == GDK_J ) gis_view_rotate(self->view, 10, 0, 0);
- else if (kv == GDK_K ) gis_view_rotate(self->view, -10, 0, 0);
- else if (kv == GDK_L ) gis_view_rotate(self->view, 0, 10, 0);
- return TRUE;
-}
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ /* Camera 1 */
+ double lat, lon, elev, rx, ry, rz;
+ gis_viewer_get_location(GIS_VIEWER(opengl), &lat, &lon, &elev);
+ gis_viewer_get_rotation(GIS_VIEWER(opengl), &rx, &ry, &rz);
+ glRotatef(rx, 1, 0, 0);
+ glRotatef(rz, 0, 0, 1);
-gboolean on_map(GtkWidget *drawing, GdkEventConfigure *event, GisOpenGL *self)
-{
- g_debug("GisOpenGL: on_map");
+ /* Lighting */
+#ifdef ROAM_DEBUG
+ float light_ambient[] = {0.7f, 0.7f, 0.7f, 1.0f};
+ float light_diffuse[] = {2.0f, 2.0f, 2.0f, 1.0f};
+#else
+ float light_ambient[] = {0.2f, 0.2f, 0.2f, 1.0f};
+ float light_diffuse[] = {5.0f, 5.0f, 5.0f, 1.0f};
+#endif
+ float light_position[] = {-13*EARTH_R, 1*EARTH_R, 3*EARTH_R, 1.0f};
+ glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
+ glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
+ glLightfv(GL_LIGHT0, GL_POSITION, light_position);
+ glEnable(GL_LIGHT0);
+ glEnable(GL_LIGHTING);
+
+ float material_ambient[] = {0.2, 0.2, 0.2, 1.0};
+ float material_diffuse[] = {0.8, 0.8, 0.8, 1.0};
+ float material_specular[] = {0.1, 0.1, 0.1, 1.0};
+ float material_emission[] = {0.0, 0.0, 0.0, 1.0};
+ glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, material_ambient);
+ glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, material_diffuse);
+ glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, material_specular);
+ glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, material_emission);
+ glDisable(GL_TEXTURE_2D);
+ glDisable(GL_COLOR_MATERIAL);
+
+ /* Camera 2 */
+ glTranslatef(0, 0, -elev2rad(elev));
+ glRotatef(lat, 1, 0, 0);
+ glRotatef(-lon, 0, 1, 0);
+
+ glDisable(GL_ALPHA_TEST);
- /* Misc */
- glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+ glEnable(GL_BLEND);
- /* Tessellation, "finding intersecting triangles" */
- /* http://research.microsoft.com/pubs/70307/tr-2006-81.pdf */
- /* http://www.opengl.org/wiki/Alpha_Blending */
- glAlphaFunc(GL_GREATER,0.1);
- glEnable(GL_ALPHA_TEST);
+#ifndef ROAM_DEBUG
+ glCullFace(GL_BACK);
+ glEnable(GL_CULL_FACE);
- /* Depth test */
glClearDepth(1.0);
glDepthFunc(GL_LEQUAL);
glEnable(GL_DEPTH_TEST);
+#endif
- gis_opengl_end(self);
- return FALSE;
+ glEnable(GL_LINE_SMOOTH);
+
+ glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+ //glShadeModel(GL_FLAT);
+
+ g_mutex_lock(opengl->sphere_lock);
+ roam_sphere_update_view(opengl->sphere);
+ g_mutex_unlock(opengl->sphere_lock);
}
-gboolean on_configure(GtkWidget *drawing, GdkEventConfigure *event, GisOpenGL *self)
-{
- g_debug("GisOpenGL: on_confiure");
- gis_opengl_begin(self);
- double x, y, z;
- gis_view_get_location(self->view, &x, &y, &z);
+/*************
+ * 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 gboolean on_configure(GisOpenGL *opengl, GdkEventConfigure *event, gpointer _)
+{
+ g_debug("GisOpenGL: on_configure");
- /* Window is at 500 m from camera */
- double width = GTK_WIDGET(self->drawing)->allocation.width;
- double height = GTK_WIDGET(self->drawing)->allocation.height;
+ double width = GTK_WIDGET(opengl)->allocation.width;
+ double height = GTK_WIDGET(opengl)->allocation.height;
+ /* Setup OpenGL Window */
glViewport(0, 0, width, height);
-
- /* Perspective */
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
- double ang = atan((height/2)/500);
+ double ang = atan(height/FOV_DIST);
+ gluPerspective(rad2deg(ang)*2, width/height, 1000, 10*EARTH_R);
- //gluPerspective(r2d(ang)*2, width/height, -z-20, -z+20);
- gluPerspective(r2d(ang)*2, width/height, 1, 500*1000);
+#ifndef ROAM_DEBUG
+ g_mutex_lock(opengl->sphere_lock);
+ roam_sphere_update_errors(opengl->sphere);
+ g_mutex_unlock(opengl->sphere_lock);
+#endif
- gis_opengl_end(self);
return FALSE;
}
-gboolean on_expose(GtkWidget *drawing, GdkEventExpose *event, GisOpenGL *self)
+static void on_realize(GisOpenGL *opengl, gpointer _)
{
- g_debug("GisOpenGL: on_expose - begin");
- gis_opengl_begin(self);
+ g_debug("GisOpenGL: on_realize");
- double lx, ly, lz;
- double rx, ry, rz;
- gis_view_get_location(self->view, &lx, &ly, &lz);
- gis_view_get_rotation(self->view, &rx, &ry, &rz);
+ GdkGLContext *glcontext = gtk_widget_get_gl_context(GTK_WIDGET(opengl));
+ GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(opengl));
+ if (!gdk_gl_drawable_gl_begin(gldrawable, glcontext))
+ g_assert_not_reached();
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glTranslatef(lx, ly, lz);
- glRotatef(rx, 1, 0, 0);
- glRotatef(ry, 0, 1, 0);
- glRotatef(rz, 0, 0, 1);
+ _set_visuals(opengl);
+ on_configure(opengl, NULL, NULL);
+}
- /* Expose plugins */
- /* TODO: Figure out how to handle plugins:
- * - Do they belong to AWeatherGui, GisOpenGL, etc?
- */
- for (GList *cur = self->plugins; cur; cur = cur->next) {
- AWeatherPlugin *plugin = AWEATHER_PLUGIN(cur->data);
- aweather_plugin_expose(plugin);
+static gboolean _draw_level(gpointer key, gpointer value, gpointer user_data)
+{
+ g_debug("GisOpenGL: _draw_level - level=%-4d", (int)key);
+ GisOpenGL *opengl = 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++)
+ gis_object_draw( GIS_OBJECT(cur->data), opengl);
+
+ /* Freeze depth buffer and draw transparent objects sorted */
+ /* TODO: sorting */
+ //glDepthMask(FALSE);
+ glAlphaFunc(GL_GREATER, 0.1);
+ for (cur = level->sorted.next; cur; cur = cur->next, nsorted++)
+ gis_object_draw(GIS_OBJECT(cur->data), opengl);
+
+ /* TODO: Prune empty levels */
+
+ g_debug("GisOpenGL: _draw_level - drew %d,%d objects",
+ nunsorted, nsorted);
+ return FALSE;
+}
+
+static gboolean on_expose(GisOpenGL *opengl, GdkEventExpose *event, gpointer _)
+{
+ g_debug("GisOpenGL: on_expose - begin");
+
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ _set_visuals(opengl);
+#ifdef ROAM_DEBUG
+ glColor4f(1.0, 1.0, 1.0, 1.0);
+ glLineWidth(2);
+ glDisable(GL_TEXTURE_2D);
+ glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+ roam_sphere_draw(opengl->sphere);
+ (void)_draw_level;
+ //roam_sphere_draw_normals(opengl->sphere);
+#else
+ g_mutex_lock(opengl->objects_lock);
+ g_tree_foreach(opengl->objects, _draw_level, opengl);
+ g_mutex_unlock(opengl->objects_lock);
+ if (opengl->wireframe) {
+ glClear(GL_DEPTH_BUFFER_BIT);
+ glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+ roam_sphere_draw(opengl->sphere);
}
+#endif
+
+ GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(opengl));
+ gdk_gl_drawable_swap_buffers(gldrawable);
- gis_opengl_end(self);
- gis_opengl_flush(self);
g_debug("GisOpenGL: on_expose - end\n");
return FALSE;
}
-void on_state_changed(GisView *view,
- gdouble x, gdouble y, gdouble z, GisOpenGL *self)
+static gboolean on_key_press(GisOpenGL *opengl, GdkEventKey *event, gpointer _)
{
- /* Reset clipping area and redraw */
- on_configure(NULL, NULL, self);
- gis_opengl_redraw(self);
+ g_debug("GisOpenGL: on_key_press - key=%x, state=%x, plus=%x",
+ event->keyval, event->state, GDK_plus);
+
+ guint kv = event->keyval;
+ /* Testing */
+ if (kv == GDK_w) {
+ opengl->wireframe = !opengl->wireframe;
+ gtk_widget_queue_draw(GTK_WIDGET(opengl));
+ }
+#ifdef ROAM_DEBUG
+ else if (kv == GDK_n) roam_sphere_split_one(opengl->sphere);
+ else if (kv == GDK_p) roam_sphere_merge_one(opengl->sphere);
+ else if (kv == GDK_r) roam_sphere_split_merge(opengl->sphere);
+ else if (kv == GDK_u) roam_sphere_update_errors(opengl->sphere);
+ gtk_widget_queue_draw(GTK_WIDGET(opengl));
+#endif
+ return FALSE;
}
-/***********
- * Methods *
- ***********/
-GisOpenGL *gis_opengl_new(GisWorld *world, GisView *view, GtkDrawingArea *drawing)
+static gboolean _update_errors_cb(gpointer _opengl)
+{
+ GisOpenGL *opengl = _opengl;
+ g_mutex_lock(opengl->sphere_lock);
+ roam_sphere_update_errors(opengl->sphere);
+ g_mutex_unlock(opengl->sphere_lock);
+ opengl->ue_source = 0;
+ return FALSE;
+}
+static void on_view_changed(GisOpenGL *opengl,
+ gdouble _1, gdouble _2, gdouble _3)
+{
+ g_debug("GisOpenGL: on_view_changed");
+ _set_visuals(opengl);
+#ifndef ROAM_DEBUG
+ if (!opengl->ue_source)
+ opengl->ue_source = g_idle_add_full(G_PRIORITY_HIGH_IDLE+30,
+ _update_errors_cb, opengl, NULL);
+ //roam_sphere_update_errors(opengl->sphere);
+#else
+ (void)_update_errors_cb;
+#endif
+}
+
+static gboolean on_idle(GisOpenGL *opengl)
+{
+ //g_debug("GisOpenGL: on_idle");
+ g_mutex_lock(opengl->sphere_lock);
+ if (roam_sphere_split_merge(opengl->sphere))
+ gtk_widget_queue_draw(GTK_WIDGET(opengl));
+ g_mutex_unlock(opengl->sphere_lock);
+ return TRUE;
+}
+
+
+/*********************
+ * GisViewer methods *
+ *********************/
+/**
+ * gis_opengl_new:
+ * @plugins: the plugins store to use
+ * @prefs: the preferences object to use
+ *
+ * Create a new OpenGL renderer.
+ *
+ * Returns: the new #GisOpenGL
+ */
+GisViewer *gis_opengl_new(GisPlugins *plugins, GisPrefs *prefs)
{
g_debug("GisOpenGL: new");
- GisOpenGL *self = g_object_new(GIS_TYPE_OPENGL, NULL);
- self->world = world;
- self->view = view;
- self->drawing = drawing;
- g_object_ref(world);
- g_object_ref(view);
- g_object_ref(drawing);
+ GisViewer *opengl = g_object_new(GIS_TYPE_OPENGL, NULL);
+ gis_viewer_setup(opengl, plugins, prefs);
+ return opengl;
+}
- /* OpenGL setup */
- GdkGLConfig *glconfig = gdk_gl_config_new_by_mode(
- GDK_GL_MODE_RGBA | GDK_GL_MODE_DEPTH |
- GDK_GL_MODE_DOUBLE | GDK_GL_MODE_ALPHA);
- if (!glconfig)
- g_error("Failed to create glconfig");
- if (!gtk_widget_set_gl_capability(GTK_WIDGET(self->drawing),
- glconfig, NULL, TRUE, GDK_GL_RGBA_TYPE))
- g_error("GL lacks required capabilities");
+static void gis_opengl_center_position(GisViewer *_opengl, gdouble lat, gdouble lon, gdouble elev)
+{
+ glRotatef(lon, 0, 1, 0);
+ glRotatef(-lat, 1, 0, 0);
+ glTranslatef(0, 0, elev2rad(elev));
+}
- g_signal_connect(self->view, "location-changed", G_CALLBACK(on_state_changed), self);
- g_signal_connect(self->view, "rotation-changed", G_CALLBACK(on_state_changed), self);
+static void gis_opengl_project(GisViewer *_opengl,
+ gdouble lat, gdouble lon, gdouble elev,
+ gdouble *px, gdouble *py, gdouble *pz)
+{
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
+ gdouble x, y, z;
+ lle2xyz(lat, lon, elev, &x, &y, &z);
+ gluProject(x, y, z,
+ opengl->sphere->view->model,
+ opengl->sphere->view->proj,
+ opengl->sphere->view->view,
+ px, py, pz);
+}
- g_signal_connect(self->drawing, "map-event", G_CALLBACK(on_map), self);
- g_signal_connect(self->drawing, "configure-event", G_CALLBACK(on_configure), self);
- g_signal_connect(self->drawing, "expose-event", G_CALLBACK(on_expose), self);
+static void gis_opengl_set_height_func(GisViewer *_opengl, GisBounds *bounds,
+ RoamHeightFunc height_func, gpointer user_data, gboolean update)
+{
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
+ /* TODO: get points? */
+ g_mutex_lock(opengl->sphere_lock);
+ GList *triangles = roam_sphere_get_intersect(opengl->sphere, TRUE,
+ bounds->n, bounds->s, bounds->e, bounds->w);
+ for (GList *cur = triangles; cur; cur = cur->next) {
+ RoamTriangle *tri = cur->data;
+ RoamPoint *points[] = {tri->p.l, tri->p.m, tri->p.r, tri->split};
+ for (int i = 0; i < G_N_ELEMENTS(points); i++) {
+ if (bounds->n >= points[i]->lat && points[i]->lat >= bounds->s &&
+ bounds->e >= points[i]->lon && points[i]->lon >= bounds->w) {
+ points[i]->height_func = height_func;
+ points[i]->height_data = user_data;
+ roam_point_update_height(points[i]);
+ }
+ }
+ }
+ g_list_free(triangles);
+ g_mutex_unlock(opengl->sphere_lock);
+}
- g_signal_connect(self->drawing, "button-press-event", G_CALLBACK(on_button_press), self);
- g_signal_connect(self->drawing, "enter-notify-event", G_CALLBACK(on_button_press), self);
- g_signal_connect(self->drawing, "key-press-event", G_CALLBACK(on_key_press), self);
- return self;
+static void _gis_opengl_clear_height_func_rec(RoamTriangle *root)
+{
+ if (!root)
+ return;
+ RoamPoint *points[] = {root->p.l, root->p.m, root->p.r, root->split};
+ for (int i = 0; i < G_N_ELEMENTS(points); i++) {
+ points[i]->height_func = NULL;
+ points[i]->height_data = NULL;
+ roam_point_update_height(points[i]);
+ }
+ _gis_opengl_clear_height_func_rec(root->kids[0]);
+ _gis_opengl_clear_height_func_rec(root->kids[1]);
}
-void gis_opengl_redraw(GisOpenGL *self)
+static void gis_opengl_clear_height_func(GisViewer *_opengl)
{
- g_debug("GisOpenGL: gl_redraw");
- gtk_widget_queue_draw(GTK_WIDGET(self->drawing));
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
+ for (int i = 0; i < G_N_ELEMENTS(opengl->sphere->roots); i++)
+ _gis_opengl_clear_height_func_rec(opengl->sphere->roots[i]);
}
-void gis_opengl_begin(GisOpenGL *self)
+
+static gpointer gis_opengl_add(GisViewer *_opengl, GisObject *object,
+ gint key, gboolean sort)
{
- g_assert(GIS_IS_OPENGL(self));
+ g_assert(GIS_IS_OPENGL(_opengl));
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
+ g_mutex_lock(opengl->objects_lock);
+ struct RenderLevel *level = g_tree_lookup(opengl->objects, (gpointer)key);
+ if (!level) {
+ level = g_new0(struct RenderLevel, 1);
+ g_tree_insert(opengl->objects, (gpointer)key, level);
+ }
+ GList *list = sort ? &level->sorted : &level->unsorted;
+ /* Put the link in the list */
+ GList *link = g_new0(GList, 1);
+ link->data = object;
+ link->prev = list;
+ link->next = list->next;
+ if (list->next)
+ list->next->prev = link;
+ list->next = link;
+ g_mutex_unlock(opengl->objects_lock);
+ return link;
+}
- GdkGLContext *glcontext = gtk_widget_get_gl_context(GTK_WIDGET(self->drawing));
- GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self->drawing));
+static GisObject *gis_opengl_remove(GisViewer *_opengl, gpointer _link)
+{
+ g_assert(GIS_IS_OPENGL(_opengl));
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
+ g_mutex_lock(opengl->objects_lock);
+ GList *link = _link;
+ GisObject *object = link->data;
+ /* Just unlink and free it, link->prev is assured */
+ link->prev->next = link->next;
+ if (link->next)
+ link->next->prev = link->prev;
+ g_free(link);
+ g_object_unref(object);
+ g_mutex_unlock(opengl->objects_lock);
+ return object;
+}
- if (!gdk_gl_drawable_gl_begin(gldrawable, glcontext))
- g_assert_not_reached();
+/****************
+ * GObject code *
+ ****************/
+static int _objects_cmp(gconstpointer _a, gconstpointer _b, gpointer _)
+{
+ gint a = (int)_a, b = (int)_b;
+ return a < b ? -1 :
+ a > b ? 1 : 0;
+}
+static void _objects_free(gpointer value)
+{
+ struct RenderLevel *level = value;
+ if (level->sorted.next)
+ g_list_free(level->sorted.next);
+ if (level->unsorted.next)
+ g_list_free(level->unsorted.next);
+ g_free(level);
+}
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+G_DEFINE_TYPE(GisOpenGL, gis_opengl, GIS_TYPE_VIEWER);
+static void gis_opengl_init(GisOpenGL *opengl)
+{
+ g_debug("GisOpenGL: init");
+ /* OpenGL setup */
+ GdkGLConfig *glconfig = gdk_gl_config_new_by_mode(
+ GDK_GL_MODE_RGBA | GDK_GL_MODE_DEPTH |
+ GDK_GL_MODE_DOUBLE | GDK_GL_MODE_ALPHA);
+ if (!glconfig)
+ g_error("Failed to create glconfig");
+ if (!gtk_widget_set_gl_capability(GTK_WIDGET(opengl),
+ glconfig, NULL, TRUE, GDK_GL_RGBA_TYPE))
+ g_error("GL lacks required capabilities");
+ g_object_unref(glconfig);
+
+ opengl->objects = g_tree_new_full(_objects_cmp, NULL, NULL, _objects_free);
+ opengl->objects_lock = g_mutex_new();
+ opengl->sphere = roam_sphere_new(opengl);
+ opengl->sphere_lock = g_mutex_new();
+
+#ifndef ROAM_DEBUG
+ opengl->sm_source[0] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+30, 33, (GSourceFunc)on_idle, opengl, NULL);
+ opengl->sm_source[1] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+10, 500, (GSourceFunc)on_idle, opengl, NULL);
+#else
+ (void)on_idle;
+ (void)_update_errors_cb;
+#endif
+
+ gtk_widget_add_events(GTK_WIDGET(opengl), GDK_KEY_PRESS_MASK);
+ g_signal_connect(opengl, "realize", G_CALLBACK(on_realize), NULL);
+ g_signal_connect(opengl, "configure-event", G_CALLBACK(on_configure), NULL);
+ g_signal_connect(opengl, "expose-event", G_CALLBACK(on_expose), NULL);
+
+ g_signal_connect(opengl, "key-press-event", G_CALLBACK(on_key_press), NULL);
+
+ g_signal_connect(opengl, "location-changed", G_CALLBACK(on_view_changed), NULL);
+ g_signal_connect(opengl, "rotation-changed", G_CALLBACK(on_view_changed), NULL);
}
-void gis_opengl_end(GisOpenGL *self)
+static void gis_opengl_dispose(GObject *_opengl)
{
- g_assert(GIS_IS_OPENGL(self));
- GdkGLDrawable *gldrawable = gdk_gl_drawable_get_current();
- gdk_gl_drawable_gl_end(gldrawable);
+ g_debug("GisOpenGL: dispose");
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
+ if (opengl->sm_source[0]) {
+ g_source_remove(opengl->sm_source[0]);
+ opengl->sm_source[0] = 0;
+ }
+ if (opengl->sm_source[1]) {
+ g_source_remove(opengl->sm_source[1]);
+ opengl->sm_source[1] = 0;
+ }
+ if (opengl->ue_source) {
+ g_source_remove(opengl->ue_source);
+ opengl->ue_source = 0;
+ }
+ G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(_opengl);
+}
+static void gis_opengl_finalize(GObject *_opengl)
+{
+ g_debug("GisOpenGL: finalize");
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
+ roam_sphere_free(opengl->sphere);
+ g_tree_destroy(opengl->objects);
+ g_mutex_free(opengl->objects_lock);
+ g_mutex_free(opengl->sphere_lock);
+ G_OBJECT_CLASS(gis_opengl_parent_class)->finalize(_opengl);
}
-void gis_opengl_flush(GisOpenGL *self)
+static void gis_opengl_class_init(GisOpenGLClass *klass)
{
- g_assert(GIS_IS_OPENGL(self));
- GdkGLDrawable *gldrawable = gdk_gl_drawable_get_current();
- if (gdk_gl_drawable_is_double_buffered(gldrawable))
- gdk_gl_drawable_swap_buffers(gldrawable);
- else
- glFlush();
- gdk_gl_drawable_gl_end(gldrawable);
+ g_debug("GisOpenGL: class_init");
+ GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
+ gobject_class->finalize = gis_opengl_finalize;
+ gobject_class->dispose = gis_opengl_dispose;
+
+ GisViewerClass *viewer_class = GIS_VIEWER_CLASS(klass);
+ viewer_class->center_position = gis_opengl_center_position;
+ viewer_class->project = gis_opengl_project;
+ viewer_class->clear_height_func = gis_opengl_clear_height_func;
+ viewer_class->set_height_func = gis_opengl_set_height_func;
+ viewer_class->add = gis_opengl_add;
+ viewer_class->remove = gis_opengl_remove;
}
projects / grits / blobdiff