#include "objects/gis-marker.h"
#include "objects/gis-callback.h"
-#define FOV_DIST 2000.0
-#define MPPX(dist) (4*dist/FOV_DIST)
-
// #define ROAM_DEBUG
+/* Tessellation, "finding intersecting triangles" */
+/* http://research.microsoft.com/pubs/70307/tr-2006-81.pdf */
+/* http://www.opengl.org/wiki/Alpha_Blending */
+
/***********
* Helpers *
***********/
-static void _set_visuals(GisOpenGL *self)
+static void _set_visuals(GisOpenGL *opengl)
{
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
/* Camera 1 */
double lat, lon, elev, rx, ry, rz;
- gis_viewer_get_location(GIS_VIEWER(self), &lat, &lon, &elev);
- gis_viewer_get_rotation(GIS_VIEWER(self), &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);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
//glShadeModel(GL_FLAT);
- roam_sphere_update_view(self->sphere);
+ roam_sphere_update_view(opengl->sphere);
}
/********************
* Object handleing *
********************/
-static void _draw_tile(GisOpenGL *self, GisTile *tile)
+static void _draw_tile(GisOpenGL *opengl, GisTile *tile)
{
if (!tile || !tile->data)
return;
- GList *triangles = roam_sphere_get_intersect(self->sphere, FALSE,
+ GList *triangles = roam_sphere_get_intersect(opengl->sphere, FALSE,
tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
if (!triangles)
g_warning("GisOpenGL: _draw_tiles - No triangles to draw: edges=%f,%f,%f,%f",
g_list_free(triangles);
}
-static void _draw_tiles(GisOpenGL *self, GisTile *tile)
+static void _draw_tiles(GisOpenGL *opengl, GisTile *tile)
{
/* Only draw children if possible */
gboolean has_children = TRUE;
if (has_children)
/* Only draw children */
gis_tile_foreach(tile, child)
- _draw_tiles(self, child);
+ _draw_tiles(opengl, child);
else
/* No children, draw this tile */
- _draw_tile(self, tile);
+ _draw_tile(opengl, tile);
}
-static void _draw_marker(GisOpenGL *self, GisMarker *marker)
+static void _draw_marker(GisOpenGL *opengl, GisMarker *marker)
{
- GisPoint *point = gis_object_center(GIS_OBJECT(marker));
+ GisPoint *point = gis_object_center(marker);
gdouble px, py, pz;
- gis_viewer_project(GIS_VIEWER(self),
+ gis_viewer_project(GIS_VIEWER(opengl),
point->lat, point->lon, point->elev,
&px, &py, &pz);
if (pz > 1)
glMatrixMode(GL_PROJECTION); glLoadIdentity();
glMatrixMode(GL_MODELVIEW); glLoadIdentity();
- glOrtho(0, GTK_WIDGET(self)->allocation.width,
- 0, GTK_WIDGET(self)->allocation.height, -1, 1);
+ glOrtho(0, GTK_WIDGET(opengl)->allocation.width,
+ 0, GTK_WIDGET(opengl)->allocation.height, -1, 1);
glTranslated(px - marker->xoff,
py - marker->yoff, 0);
glEnd();
}
-static void _draw_callback(GisOpenGL *self, GisCallback *callback)
+static void _draw_callback(GisOpenGL *opengl, GisCallback *callback)
{
callback->callback(callback, callback->user_data);
}
-static void _draw_object(GisOpenGL *self, GisObject *object)
+static void _draw_object(GisOpenGL *opengl, 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]);
+ gis_viewer_get_location(GIS_VIEWER(opengl), &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]);
glMatrixMode(GL_MODELVIEW); glPushMatrix();
glPushAttrib(GL_ALL_ATTRIB_BITS);
if (GIS_IS_MARKER(object)) {
- _draw_marker(self, GIS_MARKER(object));
+ _draw_marker(opengl, GIS_MARKER(object));
} else if (GIS_IS_CALLBACK(object)) {
- _draw_callback(self, GIS_CALLBACK(object));
+ _draw_callback(opengl, GIS_CALLBACK(object));
} else if (GIS_IS_TILE(object)) {
- _draw_tiles(self, GIS_TILE(object));
+ _draw_tiles(opengl, GIS_TILE(object));
}
glPopAttrib();
glMatrixMode(GL_PROJECTION); glPopMatrix();
glMatrixMode(GL_MODELVIEW); glPopMatrix();
}
-static void _load_object(GisOpenGL *self, GisObject *object)
+static void _load_object(GisOpenGL *opengl, GisObject *object)
{
g_debug("GisOpenGL: load_object");
if (GIS_IS_MARKER(object)) {
}
}
-static void _unload_object(GisOpenGL *self, GisObject *object)
+static void _unload_object(GisOpenGL *opengl, GisObject *object)
{
g_debug("GisOpenGL: unload_object");
if (GIS_IS_MARKER(object)) {
GisMarker *marker = GIS_MARKER(object);
- g_debug("delete_texture: %d", marker->tex);
glDeleteTextures(1, &marker->tex);
}
}
GList sorted;
};
-static void on_realize(GisOpenGL *self, gpointer _)
+static void on_realize(GisOpenGL *opengl, gpointer _)
{
g_debug("GisOpenGL: on_realize");
- GdkGLContext *glcontext = gtk_widget_get_gl_context(GTK_WIDGET(self));
- GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
+ 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();
- _set_visuals(self);
- g_mutex_lock(self->sphere_lock);
- roam_sphere_update_errors(self->sphere);
- g_mutex_unlock(self->sphere_lock);
+ _set_visuals(opengl);
+ g_mutex_lock(opengl->sphere_lock);
+ roam_sphere_update_errors(opengl->sphere);
+ g_mutex_unlock(opengl->sphere_lock);
}
-static gboolean on_configure(GisOpenGL *self, GdkEventConfigure *event, gpointer _)
+static gboolean on_configure(GisOpenGL *opengl, GdkEventConfigure *event, gpointer _)
{
g_debug("GisOpenGL: on_configure");
- double width = GTK_WIDGET(self)->allocation.width;
- double height = GTK_WIDGET(self)->allocation.height;
+ double width = GTK_WIDGET(opengl)->allocation.width;
+ double height = GTK_WIDGET(opengl)->allocation.height;
/* Setup OpenGL Window */
glViewport(0, 0, width, height);
gluPerspective(rad2deg(ang)*2, width/height, 1, 10*EARTH_R);
#ifndef ROAM_DEBUG
- g_mutex_lock(self->sphere_lock);
- roam_sphere_update_errors(self->sphere);
- g_mutex_unlock(self->sphere_lock);
+ g_mutex_lock(opengl->sphere_lock);
+ roam_sphere_update_errors(opengl->sphere);
+ g_mutex_unlock(opengl->sphere_lock);
#endif
return FALSE;
static gboolean _draw_level(gpointer key, gpointer value, gpointer user_data)
{
g_debug("GisOpenGL: _draw_level - level=%-4d", (int)key);
- GisOpenGL *self = user_data;
+ GisOpenGL *opengl = user_data;
struct RenderLevel *level = value;
int nsorted = 0, nunsorted = 0;
GList *cur = NULL;
glDepthMask(TRUE);
glClear(GL_DEPTH_BUFFER_BIT);
for (cur = level->unsorted.next; cur; cur = cur->next, nunsorted++)
- _draw_object(self, GIS_OBJECT(cur->data));
+ _draw_object(opengl, GIS_OBJECT(cur->data));
/* 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++)
- _draw_object(self, GIS_OBJECT(cur->data));
+ _draw_object(opengl, GIS_OBJECT(cur->data));
/* TODO: Prune empty levels */
return FALSE;
}
-static gboolean on_expose(GisOpenGL *self, GdkEventExpose *event, gpointer _)
+static gboolean on_expose(GisOpenGL *opengl, GdkEventExpose *event, gpointer _)
{
g_debug("GisOpenGL: on_expose - begin");
glClear(GL_COLOR_BUFFER_BIT);
- _set_visuals(self);
+ _set_visuals(opengl);
#ifdef ROAM_DEBUG
glColor4f(0.0, 0.0, 9.0, 0.6);
glDisable(GL_TEXTURE_2D);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
- roam_sphere_draw(self->sphere);
- //roam_sphere_draw_normals(self->sphere);
+ roam_sphere_draw(opengl->sphere);
+ //roam_sphere_draw_normals(opengl->sphere);
#else
- g_tree_foreach(self->objects, _draw_level, self);
- if (self->wireframe) {
+ g_tree_foreach(opengl->objects, _draw_level, opengl);
+ if (opengl->wireframe) {
+ glClear(GL_DEPTH_BUFFER_BIT);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
- roam_sphere_draw(self->sphere);
+ roam_sphere_draw(opengl->sphere);
}
#endif
- GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
+ GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(opengl));
gdk_gl_drawable_swap_buffers(gldrawable);
g_debug("GisOpenGL: on_expose - end\n");
return FALSE;
}
-static gboolean on_key_press(GisOpenGL *self, GdkEventKey *event, gpointer _)
+static gboolean on_key_press(GisOpenGL *opengl, GdkEventKey *event, gpointer _)
{
g_debug("GisOpenGL: on_key_press - key=%x, state=%x, plus=%x",
event->keyval, event->state, GDK_plus);
gdk_threads_leave();
/* Testing */
if (kv == GDK_w) {
- self->wireframe = !self->wireframe;
- gtk_widget_queue_draw(GTK_WIDGET(self));
+ opengl->wireframe = !opengl->wireframe;
+ gtk_widget_queue_draw(GTK_WIDGET(opengl));
}
#ifdef ROAM_DEBUG
- else if (kv == GDK_n) roam_sphere_split_one(self->sphere);
- else if (kv == GDK_p) roam_sphere_merge_one(self->sphere);
- else if (kv == GDK_r) roam_sphere_split_merge(self->sphere);
- else if (kv == GDK_u) roam_sphere_update_errors(self->sphere);
+ 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);
gdk_threads_enter();
- gtk_widget_queue_draw(GTK_WIDGET(self));
+ gtk_widget_queue_draw(GTK_WIDGET(opengl));
#else
gdk_threads_enter();
#endif
roam_sphere_update_errors(sphere);
return FALSE;
}
-static void on_view_changed(GisOpenGL *self,
+static void on_view_changed(GisOpenGL *opengl,
gdouble _1, gdouble _2, gdouble _3)
{
g_debug("GisOpenGL: on_view_changed");
- gdk_threads_enter();
- _set_visuals(self);
+ _set_visuals(opengl);
#ifndef ROAM_DEBUG
- g_idle_add_full(G_PRIORITY_HIGH_IDLE+30, _update_errors_cb, self->sphere, NULL);
- //roam_sphere_update_errors(self->sphere);
+ opengl->ue_source = g_idle_add_full(G_PRIORITY_HIGH_IDLE+30,
+ _update_errors_cb, opengl->sphere, NULL);
+ //roam_sphere_update_errors(opengl->sphere);
#endif
- gdk_threads_leave();
}
-static gboolean on_idle(GisOpenGL *self)
+static gboolean on_idle(GisOpenGL *opengl)
{
//g_debug("GisOpenGL: on_idle");
gdk_threads_enter();
- g_mutex_lock(self->sphere_lock);
- if (roam_sphere_split_merge(self->sphere))
- gtk_widget_queue_draw(GTK_WIDGET(self));
- g_mutex_unlock(self->sphere_lock);
+ 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);
gdk_threads_leave();
return TRUE;
}
GisViewer *gis_opengl_new(GisPlugins *plugins, GisPrefs *prefs)
{
g_debug("GisOpenGL: new");
- GisViewer *self = g_object_new(GIS_TYPE_OPENGL, NULL);
- gis_viewer_setup(self, plugins, prefs);
- return self;
+ GisViewer *opengl = g_object_new(GIS_TYPE_OPENGL, NULL);
+ gis_viewer_setup(opengl, plugins, prefs);
+ return opengl;
}
-static void gis_opengl_center_position(GisViewer *_self, gdouble lat, gdouble lon, gdouble elev)
+static void gis_opengl_center_position(GisViewer *_opengl, gdouble lat, gdouble lon, gdouble elev)
{
- GisOpenGL *self = GIS_OPENGL(_self);
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
glRotatef(lon, 0, 1, 0);
glRotatef(-lat, 1, 0, 0);
glTranslatef(0, 0, elev2rad(elev));
}
-static void gis_opengl_project(GisViewer *_self,
+static void gis_opengl_project(GisViewer *_opengl,
gdouble lat, gdouble lon, gdouble elev,
gdouble *px, gdouble *py, gdouble *pz)
{
- GisOpenGL *self = GIS_OPENGL(_self);
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
gdouble x, y, z;
lle2xyz(lat, lon, elev, &x, &y, &z);
gluProject(x, y, z,
- self->sphere->view->model,
- self->sphere->view->proj,
- self->sphere->view->view,
+ opengl->sphere->view->model,
+ opengl->sphere->view->proj,
+ opengl->sphere->view->view,
px, py, pz);
}
-static void gis_opengl_set_height_func(GisViewer *_self, GisTile *tile,
+static void gis_opengl_set_height_func(GisViewer *_opengl, GisTile *tile,
RoamHeightFunc height_func, gpointer user_data, gboolean update)
{
- GisOpenGL *self = GIS_OPENGL(_self);
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
if (!tile)
return;
/* TODO: get points? */
- g_mutex_lock(self->sphere_lock);
- GList *triangles = roam_sphere_get_intersect(self->sphere, TRUE,
+ g_mutex_lock(opengl->sphere_lock);
+ GList *triangles = roam_sphere_get_intersect(opengl->sphere, TRUE,
tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
for (GList *cur = triangles; cur; cur = cur->next) {
RoamTriangle *tri = cur->data;
}
}
g_list_free(triangles);
- g_mutex_unlock(self->sphere_lock);
+ g_mutex_unlock(opengl->sphere_lock);
}
static void _gis_opengl_clear_height_func_rec(RoamTriangle *root)
_gis_opengl_clear_height_func_rec(root->kids[1]);
}
-static void gis_opengl_clear_height_func(GisViewer *_self)
+static void gis_opengl_clear_height_func(GisViewer *_opengl)
{
- GisOpenGL *self = GIS_OPENGL(_self);
- for (int i = 0; i < G_N_ELEMENTS(self->sphere->roots); i++)
- _gis_opengl_clear_height_func_rec(self->sphere->roots[i]);
+ 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]);
}
-static gpointer gis_opengl_add(GisViewer *_self, GisObject *object,
+static gpointer gis_opengl_add(GisViewer *_opengl, GisObject *object,
gint key, gboolean sort)
{
- g_assert(GIS_IS_OPENGL(_self));
- GisOpenGL *self = GIS_OPENGL(_self);
- _load_object(self, object);
- struct RenderLevel *level = g_tree_lookup(self->objects, (gpointer)key);
+ g_assert(GIS_IS_OPENGL(_opengl));
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
+ _load_object(opengl, object);
+ struct RenderLevel *level = g_tree_lookup(opengl->objects, (gpointer)key);
if (!level) {
level = g_new0(struct RenderLevel, 1);
- g_tree_insert(self->objects, (gpointer)key, level);
+ g_tree_insert(opengl->objects, (gpointer)key, level);
}
GList *list = sort ? &level->sorted : &level->unsorted;
/* Put the link in the list */
return next;
}
-static GisObject *gis_opengl_remove(GisViewer *_self, gpointer _link)
+static GisObject *gis_opengl_remove(GisViewer *_opengl, gpointer _link)
{
- g_assert(GIS_IS_OPENGL(_self));
- GisOpenGL *self = GIS_OPENGL(_self);
+ g_assert(GIS_IS_OPENGL(_opengl));
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
GList *link = _link;
GisObject *object = link->data;
- _unload_object(self, object);
+ _unload_object(opengl, object);
/* Just unlink and free it, link->prev is assured */
link->prev->next = link->next;
if (link->next)
}
G_DEFINE_TYPE(GisOpenGL, gis_opengl, GIS_TYPE_VIEWER);
-static void gis_opengl_init(GisOpenGL *self)
+static void gis_opengl_init(GisOpenGL *opengl)
{
g_debug("GisOpenGL: init");
/* OpenGL setup */
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),
+ 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);
- gtk_widget_set_size_request(GTK_WIDGET(self), 600, 550);
- gtk_widget_set_events(GTK_WIDGET(self),
- GDK_BUTTON_PRESS_MASK |
- GDK_ENTER_NOTIFY_MASK |
- GDK_KEY_PRESS_MASK);
- g_object_set(self, "can-focus", TRUE, NULL);
-
- self->objects = g_tree_new_full(_objects_cmp, NULL, NULL, _objects_free);
- self->sphere = roam_sphere_new(self);
- self->sphere_lock = g_mutex_new();
+ opengl->objects = g_tree_new_full(_objects_cmp, NULL, NULL, _objects_free);
+ opengl->sphere = roam_sphere_new(opengl);
+ opengl->sphere_lock = g_mutex_new();
#ifndef ROAM_DEBUG
- self->sm_source[0] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+30, 33, (GSourceFunc)on_idle, self, NULL);
- self->sm_source[1] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+10, 500, (GSourceFunc)on_idle, self, NULL);
+ 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);
#endif
- g_signal_connect(self, "realize", G_CALLBACK(on_realize), NULL);
- g_signal_connect(self, "configure-event", G_CALLBACK(on_configure), NULL);
- g_signal_connect(self, "expose-event", G_CALLBACK(on_expose), NULL);
+ 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(self, "key-press-event", G_CALLBACK(on_key_press), NULL);
+ g_signal_connect(opengl, "key-press-event", G_CALLBACK(on_key_press), NULL);
- g_signal_connect(self, "location-changed", G_CALLBACK(on_view_changed), NULL);
- g_signal_connect(self, "rotation-changed", G_CALLBACK(on_view_changed), 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);
}
-static void gis_opengl_dispose(GObject *_self)
+static void gis_opengl_dispose(GObject *_opengl)
{
g_debug("GisOpenGL: dispose");
- GisOpenGL *self = GIS_OPENGL(_self);
- if (self->sm_source[0]) {
- g_source_remove(self->sm_source[0]);
- self->sm_source[0] = 0;
+ 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 (self->sm_source[1]) {
- g_source_remove(self->sm_source[1]);
- self->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(_self);
+ G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(_opengl);
}
-static void gis_opengl_finalize(GObject *_self)
+static void gis_opengl_finalize(GObject *_opengl)
{
g_debug("GisOpenGL: finalize");
- GisOpenGL *self = GIS_OPENGL(_self);
- roam_sphere_free(self->sphere);
- g_tree_destroy(self->objects);
- g_mutex_free(self->sphere_lock);
- G_OBJECT_CLASS(gis_opengl_parent_class)->finalize(_self);
+ GisOpenGL *opengl = GIS_OPENGL(_opengl);
+ roam_sphere_free(opengl->sphere);
+ g_tree_destroy(opengl->objects);
+ g_mutex_free(opengl->sphere_lock);
+ G_OBJECT_CLASS(gis_opengl_parent_class)->finalize(_opengl);
}
static void gis_opengl_class_init(GisOpenGLClass *klass)
{
projects / grits / blobdiff