src/Main/renderer.cxx

   1 // renderer.cxx -- top level sim routines
   2 //
   3 // Written by Curtis Olson, started May 1997.
   4 // This file contains parts of main.cxx prior to october 2004
   5 //
   6 // Copyright (C) 1997 - 2002  Curtis L. Olson  - http://www.flightgear.org/~curt
   7 //
   8 // This program is free software; you can redistribute it and/or
   9 // modify it under the terms of the GNU General Public License as
  10 // published by the Free Software Foundation; either version 2 of the
  11 // License, or (at your option) any later version.
  12 //
  13 // This program is distributed in the hope that it will be useful, but
  14 // WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 // General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the Free Software
  20 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  21
  22 #ifdef HAVE_CONFIG_H
  23 #  include <config.h>
  24 #endif
  25
  26 #ifdef HAVE_WINDOWS_H
  27 #  include <windows.h>
  28 #endif
  29
  30 #include <simgear/compiler.h>
  31
  32 #include <osg/ref_ptr>
  33 #include <osg/AlphaFunc>
  34 #include <osg/BlendFunc>
  35 #include <osg/Camera>
  36 #include <osg/CullFace>
  37 #include <osg/Depth>
  38 #include <osg/Fog>
  39 #include <osg/Group>
  40 #include <osg/Hint>
  41 #include <osg/Light>
  42 #include <osg/LightModel>
  43 #include <osg/LightSource>
  44 #include <osg/Material>
  45 #include <osg/Math>
  46 #include <osg/NodeCallback>
  47 #include <osg/Notify>
  48 #include <osg/PolygonMode>
  49 #include <osg/PolygonOffset>
  50 #include <osg/Version>
  51 #include <osg/TexEnv>
  52
  53 #include <osgUtil/LineSegmentIntersector>
  54
  55 #include <osg/io_utils>
  56 #include <osgDB/WriteFile>
  57
  58 #include <simgear/math/SGMath.hxx>
  59 #include <simgear/screen/extensions.hxx>
  60 #include <simgear/scene/material/matlib.hxx>
  61 #include <simgear/scene/model/animation.hxx>
  62 #include <simgear/scene/model/placement.hxx>
  63 #include <simgear/scene/sky/sky.hxx>
  64 #include <simgear/scene/util/SGUpdateVisitor.hxx>
  65 #include <simgear/scene/util/RenderConstants.hxx>
  66 #include <simgear/scene/tgdb/GroundLightManager.hxx>
  67 #include <simgear/scene/tgdb/pt_lights.hxx>
  68 #include <simgear/props/props.hxx>
  69 #include <simgear/timing/sg_time.hxx>
  70 #include <simgear/ephemeris/ephemeris.hxx>
  71 #include <simgear/math/sg_random.h>
  72 #ifdef FG_JPEG_SERVER
  73 #include <simgear/screen/jpgfactory.hxx>
  74 #endif
  75
  76 #include <simgear/environment/visual_enviro.hxx>
  77
  78 #include <Time/light.hxx>
  79 #include <Time/light.hxx>
  80 #include <Aircraft/aircraft.hxx>
  81 #include <Cockpit/panel.hxx>
  82 #include <Cockpit/cockpit.hxx>
  83 #include <Cockpit/hud.hxx>
  84 #include <Model/panelnode.hxx>
  85 #include <Model/modelmgr.hxx>
  86 #include <Model/acmodel.hxx>
  87 #include <Scenery/scenery.hxx>
  88 #include <Scenery/redout.hxx>
  89 #include <Scenery/tilemgr.hxx>
  90 #include <GUI/new_gui.hxx>
  91 #include <Instrumentation/instrument_mgr.hxx>
  92 #include <Instrumentation/HUD/HUD.hxx>
  93 #include <Environment/precipitation_mgr.hxx>
  94
  95 #include <Include/general.hxx>
  96 #include "splash.hxx"
  97 #include "renderer.hxx"
  98 #include "main.hxx"
  99 #include "CameraGroup.hxx"
 100 #include "FGEventHandler.hxx"
 101
 102 using namespace osg;
 103 using namespace simgear;
 104 using namespace flightgear;
 105
 106 class FGHintUpdateCallback : public osg::StateAttribute::Callback {
 107 public:
 108   FGHintUpdateCallback(const char* configNode) :
 109     mConfigNode(fgGetNode(configNode, true))
 110   { }
 111   virtual void operator()(osg::StateAttribute* stateAttribute,
 112                           osg::NodeVisitor*)
 113   {
 114     assert(dynamic_cast<osg::Hint*>(stateAttribute));
 115     osg::Hint* hint = static_cast<osg::Hint*>(stateAttribute);
 116
 117     const char* value = mConfigNode->getStringValue();
 118     if (!value)
 119       hint->setMode(GL_DONT_CARE);
 120     else if (0 == strcmp(value, "nicest"))
 121       hint->setMode(GL_NICEST);
 122     else if (0 == strcmp(value, "fastest"))
 123       hint->setMode(GL_FASTEST);
 124     else
 125       hint->setMode(GL_DONT_CARE);
 126   }
 127 private:
 128   SGSharedPtr<SGPropertyNode> mConfigNode;
 129 };
 130
 131
 132 class SGPuDrawable : public osg::Drawable {
 133 public:
 134   SGPuDrawable()
 135   {
 136     // Dynamic stuff, do not store geometry
 137     setUseDisplayList(false);
 138
 139     osg::StateSet* stateSet = getOrCreateStateSet();
 140     stateSet->setRenderBinDetails(1001, "RenderBin");
 141     // speed optimization?
 142     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 143     // We can do translucent menus, so why not. :-)
 144     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 145     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 146     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 147
 148     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 149
 150     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 151     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 152   }
 153   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 154   { drawImplementation(*renderInfo.getState()); }
 155   void drawImplementation(osg::State& state) const
 156   {
 157     state.setActiveTextureUnit(0);
 158     state.setClientActiveTextureUnit(0);
 159
 160     state.disableAllVertexArrays();
 161
 162     glPushAttrib(GL_ALL_ATTRIB_BITS);
 163     glPushClientAttrib(~0u);
 164
 165     puDisplay();
 166
 167     glPopClientAttrib();
 168     glPopAttrib();
 169   }
 170
 171   virtual osg::Object* cloneType() const { return new SGPuDrawable; }
 172   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGPuDrawable; }
 173
 174 private:
 175 };
 176
 177 class SGHUDAndPanelDrawable : public osg::Drawable {
 178 public:
 179   SGHUDAndPanelDrawable()
 180   {
 181     // Dynamic stuff, do not store geometry
 182     setUseDisplayList(false);
 183
 184     osg::StateSet* stateSet = getOrCreateStateSet();
 185     stateSet->setRenderBinDetails(1000, "RenderBin");
 186
 187     // speed optimization?
 188     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 189     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 190     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 191     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 192     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 193
 194     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 195   }
 196   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 197   { drawImplementation(*renderInfo.getState()); }
 198   void drawImplementation(osg::State& state) const
 199   {
 200     state.setActiveTextureUnit(0);
 201     state.setClientActiveTextureUnit(0);
 202     state.disableAllVertexArrays();
 203
 204     glPushAttrib(GL_ALL_ATTRIB_BITS);
 205     glPushClientAttrib(~0u);
 206
 207     fgCockpitUpdate(&state);
 208
 209     FGInstrumentMgr *instr = static_cast<FGInstrumentMgr*>(globals->get_subsystem("instrumentation"));
 210     HUD *hud = static_cast<HUD*>(instr->get_subsystem("hud"));
 211     hud->draw(state);
 212
 213     // update the panel subsystem
 214     if ( globals->get_current_panel() != NULL )
 215         globals->get_current_panel()->update(state);
 216     // We don't need a state here - can be safely removed when we can pick
 217     // correctly
 218     fgUpdate3DPanels();
 219
 220     glPopClientAttrib();
 221     glPopAttrib();
 222
 223   }
 224
 225   virtual osg::Object* cloneType() const { return new SGHUDAndPanelDrawable; }
 226   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGHUDAndPanelDrawable; }
 227
 228 private:
 229 };
 230
 231 class FGLightSourceUpdateCallback : public osg::NodeCallback {
 232 public:
 233   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 234   {
 235     assert(dynamic_cast<osg::LightSource*>(node));
 236     osg::LightSource* lightSource = static_cast<osg::LightSource*>(node);
 237     osg::Light* light = lightSource->getLight();
 238
 239     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 240     light->setAmbient(l->scene_ambient().osg());
 241     light->setDiffuse(l->scene_diffuse().osg());
 242     light->setSpecular(l->scene_specular().osg());
 243     SGVec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
 244     light->setPosition(position.osg());
 245     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
 246     light->setDirection(direction.osg());
 247     light->setSpotExponent(0);
 248     light->setSpotCutoff(180);
 249     light->setConstantAttenuation(1);
 250     light->setLinearAttenuation(0);
 251     light->setQuadraticAttenuation(0);
 252
 253     traverse(node, nv);
 254   }
 255 };
 256
 257 class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
 258 public:
 259   FGWireFrameModeUpdateCallback() :
 260     mWireframe(fgGetNode("/sim/rendering/wireframe"))
 261   { }
 262   virtual void operator()(osg::StateAttribute* stateAttribute,
 263                           osg::NodeVisitor*)
 264   {
 265     assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
 266     osg::PolygonMode* polygonMode;
 267     polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
 268
 269     if (mWireframe->getBoolValue())
 270       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 271                            osg::PolygonMode::LINE);
 272     else
 273       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 274                            osg::PolygonMode::FILL);
 275   }
 276 private:
 277   SGSharedPtr<SGPropertyNode> mWireframe;
 278 };
 279
 280 class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
 281 public:
 282   FGLightModelUpdateCallback() :
 283     mHighlights(fgGetNode("/sim/rendering/specular-highlight"))
 284   { }
 285   virtual void operator()(osg::StateAttribute* stateAttribute,
 286                           osg::NodeVisitor*)
 287   {
 288     assert(dynamic_cast<osg::LightModel*>(stateAttribute));
 289     osg::LightModel* lightModel;
 290     lightModel = static_cast<osg::LightModel*>(stateAttribute);
 291
 292 #if 0
 293     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 294     lightModel->setAmbientIntensity(l->scene_ambient().osg());
 295 #else
 296     lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
 297 #endif
 298     lightModel->setTwoSided(true);
 299     lightModel->setLocalViewer(false);
 300
 301     if (mHighlights->getBoolValue()) {
 302       lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
 303     } else {
 304       lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
 305     }
 306   }
 307 private:
 308   SGSharedPtr<SGPropertyNode> mHighlights;
 309 };
 310
 311 class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
 312 public:
 313   FGFogEnableUpdateCallback() :
 314     mFogEnabled(fgGetNode("/sim/rendering/fog"))
 315   { }
 316   virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
 317   {
 318     if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
 319       stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 320     } else {
 321       stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
 322     }
 323   }
 324 private:
 325   SGSharedPtr<SGPropertyNode> mFogEnabled;
 326 };
 327
 328 class FGFogUpdateCallback : public osg::StateAttribute::Callback {
 329 public:
 330   virtual void operator () (osg::StateAttribute* sa, osg::NodeVisitor* nv)
 331   {
 332     assert(dynamic_cast<SGUpdateVisitor*>(nv));
 333     assert(dynamic_cast<osg::Fog*>(sa));
 334     SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
 335     osg::Fog* fog = static_cast<osg::Fog*>(sa);
 336     fog->setMode(osg::Fog::EXP2);
 337     fog->setColor(updateVisitor->getFogColor().osg());
 338     fog->setDensity(updateVisitor->getFogExp2Density());
 339   }
 340 };
 341
 342 // update callback for the switch node guarding that splash
 343 class FGScenerySwitchCallback : public osg::NodeCallback {
 344 public:
 345   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 346   {
 347     assert(dynamic_cast<osg::Switch*>(node));
 348     osg::Switch* sw = static_cast<osg::Switch*>(node);
 349
 350     double t = globals->get_sim_time_sec();
 351     bool enabled = 0 < t;
 352     sw->setValue(0, enabled);
 353     if (!enabled)
 354       return;
 355     traverse(node, nv);
 356   }
 357 };
 358
 359 // Sky structures
 360 SGSky *thesky;
 361
 362 static osg::ref_ptr<osg::FrameStamp> mFrameStamp = new osg::FrameStamp;
 363 static osg::ref_ptr<SGUpdateVisitor> mUpdateVisitor= new SGUpdateVisitor;
 364
 365 static osg::ref_ptr<osg::Group> mRealRoot = new osg::Group;
 366
 367 static osg::ref_ptr<osg::Group> mRoot = new osg::Group;
 368
 369 FGRenderer::FGRenderer()
 370 {
 371 #ifdef FG_JPEG_SERVER
 372    jpgRenderFrame = FGRenderer::update;
 373 #endif
 374    eventHandler = new FGEventHandler;
 375 }
 376
 377 FGRenderer::~FGRenderer()
 378 {
 379 #ifdef FG_JPEG_SERVER
 380    jpgRenderFrame = NULL;
 381 #endif
 382 }
 383
 384 // Initialize various GL/view parameters
 385 // XXX This should be called "preinit" or something, as it initializes
 386 // critical parts of the scene graph in addition to the splash screen.
 387 void
 388 FGRenderer::splashinit( void ) {
 389     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 390     mRealRoot = dynamic_cast<osg::Group*>(viewer->getSceneData());
 391     mRealRoot->addChild(fgCreateSplashNode());
 392     mFrameStamp = viewer->getFrameStamp();
 393     // Scene doesn't seem to pass the frame stamp to the update
 394     // visitor automatically.
 395     mUpdateVisitor->setFrameStamp(mFrameStamp.get());
 396     viewer->setUpdateVisitor(mUpdateVisitor.get());
 397 }
 398
 399 void
 400 FGRenderer::init( void )
 401 {
 402     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 403     osg::initNotifyLevel();
 404
 405     // The number of polygon-offset "units" to place between layers.  In
 406     // principle, one is supposed to be enough.  In practice, I find that
 407     // my hardware/driver requires many more.
 408     osg::PolygonOffset::setUnitsMultiplier(1);
 409     osg::PolygonOffset::setFactorMultiplier(1);
 410
 411     // Go full screen if requested ...
 412     if ( fgGetBool("/sim/startup/fullscreen") )
 413         fgOSFullScreen();
 414
 415     viewer->getCamera()
 416         ->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 417
 418     osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
 419
 420     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
 421
 422     stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
 423     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 424
 425     stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
 426     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
 427     stateSet->setAttribute(new osg::BlendFunc);
 428     stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
 429
 430     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 431
 432     // this will be set below
 433     stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
 434
 435     osg::Material* material = new osg::Material;
 436     stateSet->setAttribute(material);
 437
 438     stateSet->setTextureAttribute(0, new osg::TexEnv);
 439     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 440
 441     osg::Hint* hint = new osg::Hint(GL_FOG_HINT, GL_DONT_CARE);
 442     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/fog"));
 443     stateSet->setAttribute(hint);
 444     hint = new osg::Hint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
 445     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/polygon-smooth"));
 446     stateSet->setAttribute(hint);
 447     hint = new osg::Hint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
 448     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/line-smooth"));
 449     stateSet->setAttribute(hint);
 450     hint = new osg::Hint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
 451     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/point-smooth"));
 452     stateSet->setAttribute(hint);
 453     hint = new osg::Hint(GL_PERSPECTIVE_CORRECTION_HINT, GL_DONT_CARE);
 454     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/perspective-correction"));
 455     stateSet->setAttribute(hint);
 456
 457     osg::Group* sceneGroup = new osg::Group;
 458     sceneGroup->addChild(globals->get_scenery()->get_scene_graph());
 459     sceneGroup->setNodeMask(~simgear::BACKGROUND_BIT);
 460
 461     //sceneGroup->addChild(thesky->getCloudRoot());
 462
 463     stateSet = sceneGroup->getOrCreateStateSet();
 464     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 465
 466     // need to update the light on every frame
 467     osg::LightSource* lightSource = new osg::LightSource;
 468     lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
 469     // relative because of CameraView being just a clever transform node
 470     lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
 471     lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
 472
 473     lightSource->addChild(sceneGroup);
 474     lightSource->addChild(thesky->getPreRoot());
 475     mRoot->addChild(lightSource);
 476
 477     stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
 478     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
 479     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
 480     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 481
 482     // enable disable specular highlights.
 483     // is the place where we might plug in an other fragment shader ...
 484     osg::LightModel* lightModel = new osg::LightModel;
 485     lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
 486     stateSet->setAttribute(lightModel);
 487
 488     // switch to enable wireframe
 489     osg::PolygonMode* polygonMode = new osg::PolygonMode;
 490     polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
 491     stateSet->setAttributeAndModes(polygonMode);
 492
 493     // scene fog handling
 494     osg::Fog* fog = new osg::Fog;
 495     fog->setUpdateCallback(new FGFogUpdateCallback);
 496     stateSet->setAttributeAndModes(fog);
 497     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
 498
 499     // plug in the GUI
 500     osg::Camera* guiCamera = getGUICamera(CameraGroup::getDefault());
 501     if (guiCamera) {
 502         osg::Geode* geode = new osg::Geode;
 503         geode->addDrawable(new SGPuDrawable);
 504         geode->addDrawable(new SGHUDAndPanelDrawable);
 505         guiCamera->addChild(geode);
 506     }
 507     osg::Switch* sw = new osg::Switch;
 508     sw->setUpdateCallback(new FGScenerySwitchCallback);
 509     sw->addChild(mRoot.get());
 510     mRealRoot->addChild(sw);
 511     mRealRoot->addChild(thesky->getCloudRoot());
 512     mRealRoot->addChild(FGCreateRedoutNode());
 513 }
 514
 515
 516 // Update all Visuals (redraws anything graphics related)
 517 void
 518 FGRenderer::update( bool refresh_camera_settings ) {
 519     bool scenery_loaded = fgGetBool("sim/sceneryloaded")
 520                           || fgGetBool("sim/sceneryloaded-override");
 521     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 522     if ( idle_state < 1000 || !scenery_loaded ) {
 523         fgSetDouble("/sim/startup/splash-alpha", 1.0);
 524
 525         // Keep resetting sim time while the sim is initializing
 526         // the splash screen is now in the scenegraph
 527         globals->set_sim_time_sec( 0.0 );
 528         return;
 529     }
 530
 531     // Fade out the splash screen over the first three seconds.
 532     double sAlpha = SGMiscd::max(0, (2.5 - globals->get_sim_time_sec()) / 2.5);
 533     fgSetDouble("/sim/startup/splash-alpha", sAlpha);
 534
 535     bool skyblend = fgGetBool("/sim/rendering/skyblend");
 536     bool use_point_sprites = fgGetBool("/sim/rendering/point-sprites");
 537     bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
 538     bool distance_attenuation
 539         = fgGetBool("/sim/rendering/distance-attenuation");
 540     // OSGFIXME
 541     SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
 542                                   distance_attenuation );
 543
 544     static const SGPropertyNode *groundlevel_nearplane
 545         = fgGetNode("/sim/current-view/ground-level-nearplane-m");
 546
 547     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 548
 549     // update fog params
 550     double actual_visibility;
 551     if (fgGetBool("/environment/clouds/status")) {
 552         actual_visibility = thesky->get_visibility();
 553     } else {
 554         actual_visibility = fgGetDouble("/environment/visibility-m");
 555     }
 556
 557     // idle_state is now 1000 meaning we've finished all our
 558     // initializations and are running the main loop, so this will
 559     // now work without seg faulting the system.
 560
 561     FGViewer *current__view = globals->get_current_view();
 562     // Force update of center dependent values ...
 563     current__view->set_dirty();
 564
 565     if ( refresh_camera_settings ) {
 566         // update view port
 567         resize( fgGetInt("/sim/startup/xsize"),
 568                 fgGetInt("/sim/startup/ysize") );
 569     }
 570     osg::Camera *camera = viewer->getCamera();
 571
 572     if ( skyblend ) {
 573
 574         if ( fgGetBool("/sim/rendering/textures") ) {
 575             SGVec4f clearColor(l->adj_fog_color());
 576             camera->setClearColor(clearColor.osg());
 577         }
 578     } else {
 579         SGVec4f clearColor(l->sky_color());
 580         camera->setClearColor(clearColor.osg());
 581     }
 582
 583     // update fog params if visibility has changed
 584     double visibility_meters = fgGetDouble("/environment/visibility-m");
 585     thesky->set_visibility(visibility_meters);
 586
 587     thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
 588                         ( global_multi_loop * fgGetInt("/sim/speed-up") )
 589                         / (double)fgGetInt("/sim/model-hz") );
 590
 591     // update the sky dome
 592     if ( skyblend ) {
 593
 594         // The sun and moon distances are scaled down versions
 595         // of the actual distance to get both the moon and the sun
 596         // within the range of the far clip plane.
 597         // Moon distance:    384,467 kilometers
 598         // Sun distance: 150,000,000 kilometers
 599
 600         double sun_horiz_eff, moon_horiz_eff;
 601         if (fgGetBool("/sim/rendering/horizon-effect")) {
 602             sun_horiz_eff
 603                 = 0.67 + pow(osg::clampAbove(0.5 + cos(l->get_sun_angle()),
 604                                              0.0),
 605                              0.33) / 3.0;
 606             moon_horiz_eff
 607                 = 0.67 + pow(osg::clampAbove(0.5 + cos(l->get_moon_angle()),
 608                                              0.0),
 609                              0.33)/3.0;
 610         } else {
 611            sun_horiz_eff = moon_horiz_eff = 1.0;
 612         }
 613
 614         SGSkyState sstate;
 615
 616         SGVec3d viewPos = current__view->getViewPosition();
 617         sstate.view_pos  = toVec3f(viewPos);
 618         SGGeod geodViewPos = SGGeod::fromCart(viewPos);
 619         SGGeod geodZeroViewPos = SGGeod::fromGeodM(geodViewPos, 0);
 620         sstate.zero_elev = toVec3f(SGVec3d::fromGeod(geodZeroViewPos));
 621         SGQuatd hlOr = SGQuatd::fromLonLat(geodViewPos);
 622         sstate.view_up   = toVec3f(hlOr.backTransform(-SGVec3d::e3()));
 623         sstate.lon       = geodViewPos.getLongitudeRad();
 624         sstate.lat       = geodViewPos.getLatitudeRad();
 625         sstate.alt       = geodViewPos.getElevationM();
 626         sstate.spin      = l->get_sun_rotation();
 627         sstate.gst       = globals->get_time_params()->getGst();
 628         sstate.sun_dist  = 50000.0 * sun_horiz_eff;
 629         sstate.moon_dist = 40000.0 * moon_horiz_eff;
 630         sstate.sun_angle = l->get_sun_angle();
 631
 632
 633         /*
 634          SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
 635          << l->sky_color()[0] << " "
 636          << l->sky_color()[1] << " "
 637          << l->sky_color()[2] << " "
 638          << l->sky_color()[3] );
 639         SG_LOG( SG_GENERAL, SG_BULK, "    fog = "
 640          << l->fog_color()[0] << " "
 641          << l->fog_color()[1] << " "
 642          << l->fog_color()[2] << " "
 643          << l->fog_color()[3] );
 644         SG_LOG( SG_GENERAL, SG_BULK,
 645                 "    sun_angle = " << l->sun_angle
 646          << "    moon_angle = " << l->moon_angle );
 647         */
 648
 649         SGSkyColor scolor;
 650
 651         scolor.sky_color   = SGVec3f(l->sky_color().data());
 652         scolor.adj_sky_color = SGVec3f(l->adj_sky_color().data());
 653         scolor.fog_color   = SGVec3f(l->adj_fog_color().data());
 654         scolor.cloud_color = SGVec3f(l->cloud_color().data());
 655         scolor.sun_angle   = l->get_sun_angle();
 656         scolor.moon_angle  = l->get_moon_angle();
 657
 658         thesky->reposition( sstate, *globals->get_ephem(), delta_time_sec );
 659         thesky->repaint( scolor, *globals->get_ephem() );
 660
 661         /*
 662         SG_LOG( SG_GENERAL, SG_BULK,
 663                 "thesky->reposition( view_pos = " << view_pos[0] << " "
 664          << view_pos[1] << " " << view_pos[2] );
 665         SG_LOG( SG_GENERAL, SG_BULK,
 666                 "    zero_elev = " << zero_elev[0] << " "
 667          << zero_elev[1] << " " << zero_elev[2]
 668          << " lon = " << cur_fdm_state->get_Longitude()
 669          << " lat = " << cur_fdm_state->get_Latitude() );
 670         SG_LOG( SG_GENERAL, SG_BULK,
 671                 "    sun_rot = " << l->get_sun_rotation
 672          << " gst = " << SGTime::cur_time_params->getGst() );
 673         SG_LOG( SG_GENERAL, SG_BULK,
 674              "    sun ra = " << globals->get_ephem()->getSunRightAscension()
 675           << " sun dec = " << globals->get_ephem()->getSunDeclination()
 676           << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
 677           << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
 678         */
 679
 680         //OSGFIXME
 681 //         shadows->setupShadows(
 682 //           current__view->getLongitude_deg(),
 683 //           current__view->getLatitude_deg(),
 684 //           globals->get_time_params()->getGst(),
 685 //           globals->get_ephem()->getSunRightAscension(),
 686 //           globals->get_ephem()->getSunDeclination(),
 687 //           l->get_sun_angle());
 688
 689     }
 690
 691 //     sgEnviro.setLight(l->adj_fog_color());
 692 //     sgEnviro.startOfFrame(current__view->get_view_pos(),
 693 //         current__view->get_world_up(),
 694 //         current__view->getLongitude_deg(),
 695 //         current__view->getLatitude_deg(),
 696 //         current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
 697 //         delta_time_sec);
 698
 699     // OSGFIXME
 700 //     sgEnviro.drawLightning();
 701
 702 //        double current_view_origin_airspeed_horiz_kt =
 703 //         fgGetDouble("/velocities/airspeed-kt", 0.0)
 704 //                        * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
 705 //                                * SGD_DEGREES_TO_RADIANS);
 706
 707     // OSGFIXME
 708 //     if( is_internal )
 709 //         shadows->endOfFrame();
 710
 711     // need to call the update visitor once
 712     mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
 713     mUpdateVisitor->setViewData(current__view->getViewPosition(),
 714                                 current__view->getViewOrientation());
 715     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
 716     mUpdateVisitor->setLight(direction, l->scene_ambient(),
 717                              l->scene_diffuse(), l->scene_specular(),
 718                              l->adj_fog_color(),
 719                              l->get_sun_angle()*SGD_RADIANS_TO_DEGREES);
 720     mUpdateVisitor->setVisibility(actual_visibility);
 721     simgear::GroundLightManager::instance()->update(mUpdateVisitor.get());
 722     bool hotspots = fgGetBool("/sim/panel-hotspots");
 723     osg::Node::NodeMask cullMask = ~simgear::LIGHTS_BITS & ~simgear::PICK_BIT;
 724     cullMask |= simgear::GroundLightManager::instance()
 725         ->getLightNodeMask(mUpdateVisitor.get());
 726     if (hotspots)
 727         cullMask |= simgear::PICK_BIT;
 728     CameraGroup::getDefault()->setCameraCullMasks(cullMask);
 729 }
 730
 731
 732
 733 // options.cxx needs to see this for toggle_panel()
 734 // Handle new window size or exposure
 735 void
 736 FGRenderer::resize( int width, int height ) {
 737     int view_h;
 738
 739     if ( (!fgGetBool("/sim/virtual-cockpit"))
 740          && fgPanelVisible() && idle_state == 1000 ) {
 741         view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
 742                              globals->get_current_panel()->getYOffset()) / 768.0);
 743     } else {
 744         view_h = height;
 745     }
 746
 747     static int lastwidth = 0;
 748     static int lastheight = 0;
 749     if (width != lastwidth)
 750         fgSetInt("/sim/startup/xsize", lastwidth = width);
 751     if (height != lastheight)
 752         fgSetInt("/sim/startup/ysize", lastheight = height);
 753
 754     // for all views
 755     FGViewMgr *viewmgr = globals->get_viewmgr();
 756     if (viewmgr) {
 757       for ( int i = 0; i < viewmgr->size(); ++i ) {
 758         viewmgr->get_view(i)->
 759           set_aspect_ratio((float)view_h / (float)width);
 760       }
 761     }
 762 }
 763
 764 bool
 765 FGRenderer::pick(std::vector<SGSceneryPick>& pickList,
 766                  const osgGA::GUIEventAdapter* ea)
 767 {
 768     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 769     // wipe out the return ...
 770     pickList.clear();
 771     typedef osgUtil::LineSegmentIntersector::Intersections Intersections;
 772     Intersections intersections;
 773
 774     if (!computeIntersections(CameraGroup::getDefault(), ea, intersections))
 775         return false;
 776     for (Intersections::iterator hit = intersections.begin(),
 777              e = intersections.end();
 778          hit != e;
 779          ++hit) {
 780         const osg::NodePath& np = hit->nodePath;
 781         osg::NodePath::const_reverse_iterator npi;
 782         for (npi = np.rbegin(); npi != np.rend(); ++npi) {
 783             SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
 784             if (!ud)
 785                 continue;
 786             for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
 787                 SGPickCallback* pickCallback = ud->getPickCallback(i);
 788                 if (!pickCallback)
 789                     continue;
 790                 SGSceneryPick sceneryPick;
 791                 sceneryPick.info.local = SGVec3d(hit->getLocalIntersectPoint());
 792                 sceneryPick.info.wgs84 = SGVec3d(hit->getWorldIntersectPoint());
 793                 sceneryPick.callback = pickCallback;
 794                 pickList.push_back(sceneryPick);
 795             }
 796         }
 797     }
 798     return !pickList.empty();
 799 }
 800
 801 void
 802 FGRenderer::setViewer(osgViewer::Viewer* viewer_)
 803 {
 804     viewer = viewer_;
 805 }
 806
 807 void
 808 FGRenderer::setEventHandler(FGEventHandler* eventHandler_)
 809 {
 810     eventHandler = eventHandler_;
 811 }
 812
 813 void
 814 FGRenderer::addCamera(osg::Camera* camera, bool useSceneData)
 815 {
 816     mRealRoot->addChild(camera);
 817 }
 818
 819 bool
 820 fgDumpSceneGraphToFile(const char* filename)
 821 {
 822     return osgDB::writeNodeFile(*mRealRoot.get(), filename);
 823 }
 824
 825 bool
 826 fgDumpTerrainBranchToFile(const char* filename)
 827 {
 828     return osgDB::writeNodeFile( *globals->get_scenery()->get_terrain_branch(),
 829                                  filename );
 830 }
 831
 832 // For debugging
 833 bool
 834 fgDumpNodeToFile(osg::Node* node, const char* filename)
 835 {
 836     return osgDB::writeNodeFile(*node, filename);
 837 }
 838 // end of renderer.cxx
 839