- // The sun and moon distances are scaled down versions
- // of the actual distance to get both the moon and the sun
- // within the range of the far clip plane.
- // Moon distance: 384,467 kilometers
- // Sun distance: 150,000,000 kilometers
- double sun_horiz_eff, moon_horiz_eff;
- if (fgGetBool("/sim/rendering/horizon-effect")) {
- sun_horiz_eff = 0.67+pow(0.5+cos(l->get_sun_angle())*2/2, 0.33)/3;
- moon_horiz_eff = 0.67+pow(0.5+cos(l->get_moon_angle())*2/2, 0.33)/3;
- } else {
- sun_horiz_eff = moon_horiz_eff = 1.0;
- }
-
- static SGSkyState sstate;
-
- sstate.view_pos = current__view->get_view_pos();
- sstate.zero_elev = current__view->get_zero_elev();
- sstate.view_up = current__view->get_world_up();
- sstate.lon = current__view->getLongitude_deg()
- * SGD_DEGREES_TO_RADIANS;
- sstate.lat = current__view->getLatitude_deg()
- * SGD_DEGREES_TO_RADIANS;
- sstate.alt = current__view->getAltitudeASL_ft()
- * SG_FEET_TO_METER;
- sstate.spin = l->get_sun_rotation();
- sstate.gst = globals->get_time_params()->getGst();
- sstate.sun_ra = globals->get_ephem()->getSunRightAscension();
- sstate.sun_dec = globals->get_ephem()->getSunDeclination();
- sstate.sun_dist = 50000.0 * sun_horiz_eff;
- sstate.moon_ra = globals->get_ephem()->getMoonRightAscension();
- sstate.moon_dec = globals->get_ephem()->getMoonDeclination();
- sstate.moon_dist = 40000.0 * moon_horiz_eff;
-
- thesky->reposition( sstate, delta_time_sec );
- }
-
- glEnable( GL_DEPTH_TEST );
- if ( strcmp(fgGetString("/sim/rendering/fog"), "disabled") ) {
- glEnable( GL_FOG );
- glFogi( GL_FOG_MODE, GL_EXP2 );
- glFogfv( GL_FOG_COLOR, l->adj_fog_color() );
- }
-
- // set sun/lighting parameters
- ssgGetLight( 0 ) -> setPosition( l->sun_vec() );
-
- // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
- // we only update GL_AMBIENT for our lights we will never get
- // a completely dark scene. So, we set GL_LIGHT_MODEL_AMBIENT
- // explicitely to black.
- glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
-
- ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient() );
- ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse() );
- ssgGetLight( 0 ) -> setColour( GL_SPECULAR, l->scene_specular() );
-
- sgEnviro.setLight(l->adj_fog_color());
-
- // texture parameters
- // glEnable( GL_TEXTURE_2D );
- glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
- glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
-
- double agl =
- current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER
- - globals->get_scenery()->get_cur_elev();
-
- if ( agl > 50.0 ) {
- scene_nearplane = 10.0f;
- scene_farplane = 120000.0f;
- } else {
- scene_nearplane = groundlevel_nearplane->getDoubleValue();
- scene_farplane = 120000.0f;
- }
-
- setNearFar( scene_nearplane, scene_farplane );
-
- sgEnviro.startOfFrame(current__view->get_view_pos(),
- current__view->get_world_up(),
- current__view->getLongitude_deg(),
- current__view->getLatitude_deg(),
- current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
- delta_time_sec);
-
- if ( draw_otw && skyblend ) {
- // draw the sky backdrop
-
- // we need a white diffuse light for the phase of the moon
- ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
- thesky->preDraw( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
- fog_exp2_density );
- // return to the desired diffuse color
- ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse() );
- }
-
- // draw the ssg scene
- glEnable( GL_DEPTH_TEST );
-
- if ( fgGetBool("/sim/rendering/wireframe") ) {
- // draw wire frame
- glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
- }
- if ( draw_otw ) {
- if ( draw_clouds ) {
-
- // Draw the terrain
- FGTileMgr::set_tile_filter( true );
- sgSetModelFilter( false );
- globals->get_aircraft_model()->select( false );
- ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
-
- // Disable depth buffer update, draw the clouds
- glDepthMask( GL_FALSE );
- if( !volumetric_clouds )
- thesky->drawUpperClouds();
- if ( multi_pass_clouds ) {
- thesky->drawLowerClouds();
- }
- glDepthMask( GL_TRUE );
-
- if ( multi_pass_clouds ) {
- // Draw the objects except the aircraft
- // and update the stencil buffer with 1
- glEnable( GL_STENCIL_TEST );
- glStencilFunc( GL_ALWAYS, 1, 1 );
- glStencilOp( GL_KEEP, GL_KEEP, GL_REPLACE );
- }
- FGTileMgr::set_tile_filter( false );
- sgSetModelFilter( true );
- ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
- } else {
- FGTileMgr::set_tile_filter( true );
- sgSetModelFilter( true );
- globals->get_aircraft_model()->select( false );
- ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
- }
- }
-
- // This is a bit kludgy. Every 200 frames, do an extra
- // traversal of the scene graph without drawing anything, but
- // with the field-of-view set to 360x360 degrees. This
- // ensures that out-of-range random objects that are not in
- // the current view frustum will still be freed properly.
- static int counter = 0;
- counter++;
- if (counter >= 200) {
- sgFrustum f;
- f.setFOV(360, 360);
- // No need to put the near plane too close;
- // this way, at least the aircraft can be
- // culled.
- f.setNearFar(1000, 1000000);
- sgMat4 m;
- ssgGetModelviewMatrix(m);
- FGTileMgr::set_tile_filter( true );
- sgSetModelFilter( true );
- globals->get_scenery()->get_scene_graph()->cull(&f, m, true);
- counter = 0;
- }
-
- // change state for lighting here
-
- // draw runway lighting
- glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through);
-
- // CLO - 02/25/2005 - DO WE NEED THIS extra fgSetNearFar()?
- // fgSetNearFar( scene_nearplane, scene_farplane );
-
- if ( enhanced_lighting ) {
-
- // Enable states for drawing points with GL_extension
- glEnable(GL_POINT_SMOOTH);
-
- if ( distance_attenuation && glPointParameterIsSupported )
- {
- // Enable states for drawing points with GL_extension
- glEnable(GL_POINT_SMOOTH);
-
- float quadratic[3] = {1.0, 0.001, 0.0000001};
- // makes the points fade as they move away
- glPointParameterfvPtr(GL_DISTANCE_ATTENUATION_EXT, quadratic);
- glPointParameterfPtr(GL_POINT_SIZE_MIN_EXT, 1.0);
- }
-
- glPointSize(4.0);
-
- // blending function for runway lights
- glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
- }
-
- glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
- glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
- glEnable(GL_TEXTURE_GEN_S);
- glEnable(GL_TEXTURE_GEN_T);
- glPolygonMode(GL_FRONT, GL_POINT);
-
- // draw runway lighting
- if ( draw_otw ) {
- ssgCullAndDraw( globals->get_scenery()->get_vasi_lights_root() );
- ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() );
- }
-
- // change punch through and then draw taxi lighting
- glFogf ( GL_FOG_DENSITY, fog_exp2_density );
- // sgVec3 taxi_fog;
- // sgSetVec3( taxi_fog, 0.0, 0.0, 0.0 );
- // glFogfv ( GL_FOG_COLOR, taxi_fog );
- if ( draw_otw ) {
- ssgCullAndDraw( globals->get_scenery()->get_taxi_lights_root() );
- }
-
- // clean up lighting
- glPolygonMode(GL_FRONT, GL_FILL);
- glDisable(GL_TEXTURE_GEN_S);
- glDisable(GL_TEXTURE_GEN_T);
-
- //static int _frame_count = 0;
- //if (_frame_count % 30 == 0) {
- // printf("SSG: %s\n", ssgShowStats());
- //}
- //else {
- // ssgShowStats();
- //}
- //_frame_count++;
-
-
- if ( enhanced_lighting ) {
- if ( distance_attenuation && glPointParameterIsSupported ) {
- glPointParameterfvPtr(GL_DISTANCE_ATTENUATION_EXT,
- default_attenuation);
- }
-
- glPointSize(1.0);
- glDisable(GL_POINT_SMOOTH);
- }
-
- // draw ground lighting
- glFogf (GL_FOG_DENSITY, ground_exp2_punch_through);
- if ( draw_otw ) {
- ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() );
- }
-
- if ( draw_otw && fgGetBool("/sim/rendering/clouds3d") ) {
- glDisable( GL_FOG );
- glDisable( GL_LIGHTING );
- // cout << "drawing new clouds" << endl;
-
- glEnable(GL_DEPTH_TEST);
- glEnable(GL_BLEND);
- glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ;
-
- /*
- glEnable( GL_TEXTURE_2D );
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
- */
-
-#ifdef FG_USE_CLOUDS_3D
- sgClouds3d->Draw((sgVec4 *)current__view->get_VIEW());
-#endif
- glEnable( GL_FOG );
- glEnable( GL_LIGHTING );
- glEnable( GL_DEPTH_TEST );
- glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
- }
-
- sgEnviro.drawLightning();
-
- if ( draw_otw && draw_clouds ) {
- if ( multi_pass_clouds ) {
- // Disable depth buffer update, draw the clouds where the
- // objects overwrite the already drawn clouds, by testing
- // the stencil buffer against 1
- glDepthMask( GL_FALSE );
- glStencilFunc( GL_EQUAL, 1, 1 );
- glStencilOp( GL_KEEP, GL_KEEP, GL_KEEP );
- thesky->drawUpperClouds();
- thesky->drawLowerClouds();
- glDepthMask( GL_TRUE );
- glDisable( GL_STENCIL_TEST );
- } else {
- glDepthMask( GL_FALSE );
- if( volumetric_clouds )
- thesky->drawUpperClouds();
- thesky->drawLowerClouds();
- glDepthMask( GL_TRUE );
- }
- }
- sgEnviro.drawPrecipitation(
- fgGetDouble("/environment/metar/rain-norm", 0.0),
- fgGetDouble("/environment/metar/snow-norm", 0.0),
- fgGetDouble("/environment/metar/hail-norm", 0.0),
- fgGetDouble("/orientation/pitch-deg", 0.0),
- fgGetDouble("/orientation/roll-deg", 0.0),
- fgGetDouble("/velocities/airspeed-kt", 0.0));
-
- if ( draw_otw ) {
- FGTileMgr::set_tile_filter( false );
- sgSetModelFilter( false );
- globals->get_aircraft_model()->select( true );
- globals->get_model_mgr()->draw();
- globals->get_aircraft_model()->draw();
- // If the view is internal, the previous line draw the
- // cockpit with modified near/far clip planes and deselect
- // the aircraft in the global scenegraph
- // Otherwise, it just enables the aircraft: The scenegraph
- // must be drawn again to see the plane.
- ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
- FGTileMgr::set_tile_filter( true );
- sgSetModelFilter( true );
- globals->get_aircraft_model()->select( true );
- }
-
- // display HUD && Panel
- glDisable( GL_FOG );
- glDisable( GL_DEPTH_TEST );
- // glDisable( GL_CULL_FACE );
- // glDisable( GL_TEXTURE_2D );
-
- // update the controls subsystem
- globals->get_controls()->update(delta_time_sec);
-
- hud_and_panel->apply();
- fgCockpitUpdate();
-
- // Use the hud_and_panel ssgSimpleState for rendering the ATC output
- // This only works properly if called before the panel call
- if((fgGetBool("/sim/atc/enabled")) || (fgGetBool("/sim/ai-traffic/enabled")))
- globals->get_ATC_display()->update(delta_time_sec);
-
- // update the panel subsystem
- if ( globals->get_current_panel() != NULL ) {
- globals->get_current_panel()->update(delta_time_sec);
- }
- fgUpdate3DPanels();
-
- // We can do translucent menus, so why not. :-)
- menus->apply();
- glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
- puDisplay();
- // glDisable ( GL_BLEND ) ;
-
- glEnable( GL_DEPTH_TEST );
- glEnable( GL_FOG );
-
- // Fade out the splash screen over the first three seconds.
- double t = globals->get_sim_time_sec();
- if (t <= 2.5)
- fgSplashUpdate((2.5 - t) / 2.5);