X-Git-Url: http://pileus.org/git/?p=grits;a=blobdiff_plain;f=src%2Fgrits-opengl.c;h=0b4100a8f48672401d471895b26df4649b40f848;hp=a39fbda1733f87d8f55c9c8b1b354b00cabeb8ba;hb=74a55fb8afe07234c705513d324c6cc373e18f8a;hpb=ce0016070b1fe7db3bd208d6148a776efd3f7d6e diff --git a/src/grits-opengl.c b/src/grits-opengl.c index a39fbda..0b4100a 100644 --- a/src/grits-opengl.c +++ b/src/grits-opengl.c @@ -57,13 +57,30 @@ struct RenderLevel { ***********/ static void _set_visuals(GritsOpenGL *opengl) { + double lat, lon, elev, rx, ry, rz; + grits_viewer_get_location(GRITS_VIEWER(opengl), &lat, &lon, &elev); + grits_viewer_get_rotation(GRITS_VIEWER(opengl), &rx, &ry, &rz); + + /* Set projection and clipping planes */ + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + + double width = GTK_WIDGET(opengl)->allocation.width; + double height = GTK_WIDGET(opengl)->allocation.height; + double ang = atan((height/2)/FOV_DIST)*2; + double atmos = 100000; + double near = MAX(elev*0.75 - atmos, 50); // View 100km of atmosphere + double far = elev + 2*EARTH_R + atmos; // on both sides of the earth + + grits_viewer_get_location(GRITS_VIEWER(opengl), &lat, &lon, &elev); + glViewport(0, 0, width, height); + gluPerspective(rad2deg(ang), width/height, near, far); + + /* Setup camera and lighting */ glMatrixMode(GL_MODELVIEW); glLoadIdentity(); /* Camera 1 */ - double lat, lon, elev, rx, ry, rz; - grits_viewer_get_location(GRITS_VIEWER(opengl), &lat, &lon, &elev); - grits_viewer_get_rotation(GRITS_VIEWER(opengl), &rx, &ry, &rz); glRotatef(rx, 1, 0, 0); glRotatef(rz, 0, 0, 1); @@ -159,16 +176,7 @@ static gboolean on_configure(GritsOpenGL *opengl, GdkEventConfigure *event, gpoi { g_debug("GritsOpenGL: on_configure"); - double width = GTK_WIDGET(opengl)->allocation.width; - double height = GTK_WIDGET(opengl)->allocation.height; - - /* Setup OpenGL Window */ - glViewport(0, 0, width, height); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - double ang = atan(height/FOV_DIST); - gluPerspective(rad2deg(ang)*2, width/height, 10, 100*EARTH_R); - + _set_visuals(opengl); #ifndef ROAM_DEBUG g_mutex_lock(opengl->sphere_lock); roam_sphere_update_errors(opengl->sphere); @@ -180,22 +188,39 @@ static gboolean on_configure(GritsOpenGL *opengl, GdkEventConfigure *event, gpoi static gboolean _draw_level(gpointer key, gpointer value, gpointer user_data) { - g_debug("GritsOpenGL: _draw_level - level=%-4ld", (glong)key); GritsOpenGL *opengl = user_data; + glong lnum = (glong)key; struct RenderLevel *level = value; + + g_debug("GritsOpenGL: _draw_level - level=%-4ld", lnum); int nsorted = 0, nunsorted = 0; GList *cur = NULL; - /* Draw opaque objects without sorting */ - glDepthMask(TRUE); - glClear(GL_DEPTH_BUFFER_BIT); + /* Configure individual levels */ + if (lnum < GRITS_LEVEL_WORLD) { + /* Disable depth for background levels */ + glDepthMask(FALSE); + glDisable(GL_ALPHA_TEST); + } else if (lnum < GRITS_LEVEL_OVERLAY) { + /* Enable depth and alpha for world levels */ + glEnable(GL_ALPHA_TEST); + glAlphaFunc(GL_GREATER, 0.1); + glDepthMask(TRUE); + } else { + /* Disable depth for Overlay/HUD levels */ + // This causes rendering glitches not sure why.. + //glDepthMask(FALSE); + } + + /* Draw unsorted objects without depth testing, + * these are polygons, etc, rather than physical objects */ + glDisable(GL_DEPTH_TEST); for (cur = level->unsorted.next; cur; cur = cur->next, nunsorted++) grits_object_draw(GRITS_OBJECT(cur->data), opengl); - /* Freeze depth buffer and draw transparent objects sorted */ - /* TODO: sorting */ - //glDepthMask(FALSE); - glAlphaFunc(GL_GREATER, 0.1); + /* Draw sorted objects using depth testing + * These are things that are actually part of the world */ + glEnable(GL_DEPTH_TEST); for (cur = level->sorted.next; cur; cur = cur->next, nsorted++) grits_object_draw(GRITS_OBJECT(cur->data), opengl); @@ -210,7 +235,9 @@ static gboolean on_expose(GritsOpenGL *opengl, GdkEventExpose *event, gpointer _ { g_debug("GritsOpenGL: on_expose - begin"); - glClear(GL_COLOR_BUFFER_BIT); + gtk_gl_begin(GTK_WIDGET(opengl)); + + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); _set_visuals(opengl); #ifdef ROAM_DEBUG @@ -223,13 +250,9 @@ static gboolean on_expose(GritsOpenGL *opengl, GdkEventExpose *event, gpointer _ //roam_sphere_draw_normals(opengl->sphere); #else g_mutex_lock(opengl->objects_lock); - g_tree_foreach(opengl->objects, _draw_level, opengl); - if (opengl->wireframe) { - glClear(GL_DEPTH_BUFFER_BIT); + if (opengl->wireframe) glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); - roam_sphere_draw(opengl->sphere); - g_tree_foreach(opengl->objects, _draw_level, opengl); - } + g_tree_foreach(opengl->objects, _draw_level, opengl); g_mutex_unlock(opengl->objects_lock); #endif @@ -293,6 +316,11 @@ static gboolean on_motion_notify(GritsOpenGL *opengl, GdkEventMotion *event, gpo g_ptr_array_free(objects, TRUE); g_mutex_unlock(opengl->objects_lock); + /* Test unproject */ + gdouble lat, lon, elev; + grits_viewer_unproject(GRITS_VIEWER(opengl), + gl_x, gl_y, -1, &lat, &lon, &elev); + /* Cleanup */ glMatrixMode(GL_PROJECTION); glPopMatrix(); @@ -436,6 +464,32 @@ static void grits_opengl_project(GritsViewer *_opengl, px, py, pz); } +static void grits_opengl_unproject(GritsViewer *_opengl, + gdouble px, gdouble py, gdouble pz, + gdouble *lat, gdouble *lon, gdouble *elev) +{ + GritsOpenGL *opengl = GRITS_OPENGL(_opengl); + if (!opengl->sphere->view) + return; + gdouble x, y, z; + if (pz < 0) { + gfloat tmp = 0; + glReadPixels(px, py, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &tmp); + pz = tmp; + } + gluUnProject(px, py, pz, + opengl->sphere->view->model, + opengl->sphere->view->proj, + opengl->sphere->view->view, + &x, &y, &z); + xyz2lle(x, y, z, lat, lon, elev); + //g_message("GritsOpenGL: unproject - " + // "%4.0lf,%4.0lf,(%5.3lf) -> " + // "%8.0lf,%8.0lf,%8.0lf -> " + // "%6.2lf,%7.2lf,%4.0lf", + // px, py, pz, x, y, z, *lat, *lon, *elev); +} + static void grits_opengl_set_height_func(GritsViewer *_opengl, GritsBounds *bounds, RoamHeightFunc height_func, gpointer user_data, gboolean update) { @@ -551,7 +605,8 @@ static void grits_opengl_init(GritsOpenGL *opengl) opengl->sphere = roam_sphere_new(opengl); opengl->sphere_lock = g_mutex_new(); gtk_gl_enable(GTK_WIDGET(opengl)); - g_signal_connect(opengl, "realize", G_CALLBACK(on_realize), NULL); + gtk_widget_add_events(GTK_WIDGET(opengl), GDK_KEY_PRESS_MASK); + g_signal_connect(opengl, "map", G_CALLBACK(on_realize), NULL); } static void grits_opengl_dispose(GObject *_opengl) { @@ -591,6 +646,7 @@ static void grits_opengl_class_init(GritsOpenGLClass *klass) GritsViewerClass *viewer_class = GRITS_VIEWER_CLASS(klass); viewer_class->center_position = grits_opengl_center_position; viewer_class->project = grits_opengl_project; + viewer_class->unproject = grits_opengl_unproject; viewer_class->clear_height_func = grits_opengl_clear_height_func; viewer_class->set_height_func = grits_opengl_set_height_func; viewer_class->add = grits_opengl_add;