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 #include <simgear/compiler.h>
  27
  28 #include <osg/ref_ptr>
  29 #include <osg/AlphaFunc>
  30 #include <osg/BlendFunc>
  31 #include <osg/Camera>
  32 #include <osg/CullFace>
  33 #include <osg/Depth>
  34 #include <osg/Fog>
  35 #include <osg/Group>
  36 #include <osg/Hint>
  37 #include <osg/Light>
  38 #include <osg/LightModel>
  39 #include <osg/LightSource>
  40 #include <osg/Material>
  41 #include <osg/NodeCallback>
  42 #include <osg/Notify>
  43 #include <osg/PolygonMode>
  44 #include <osg/PolygonOffset>
  45 #include <osg/Version>
  46 #include <osg/TexEnv>
  47
  48 #include <osgUtil/LineSegmentIntersector>
  49
  50 #include <osg/io_utils>
  51 #include <osgDB/WriteFile>
  52
  53 #include <simgear/math/SGMath.hxx>
  54 #include <simgear/screen/extensions.hxx>
  55 #include <simgear/scene/material/matlib.hxx>
  56 #include <simgear/scene/model/animation.hxx>
  57 #include <simgear/scene/model/placement.hxx>
  58 #include <simgear/scene/sky/sky.hxx>
  59 #include <simgear/scene/util/SGUpdateVisitor.hxx>
  60 #include <simgear/scene/util/RenderConstants.hxx>
  61 #include <simgear/scene/tgdb/GroundLightManager.hxx>
  62 #include <simgear/scene/tgdb/pt_lights.hxx>
  63 #include <simgear/props/props.hxx>
  64 #include <simgear/timing/sg_time.hxx>
  65 #include <simgear/ephemeris/ephemeris.hxx>
  66 #include <simgear/math/sg_random.h>
  67 #ifdef FG_JPEG_SERVER
  68 #include <simgear/screen/jpgfactory.hxx>
  69 #endif
  70
  71 #include <simgear/environment/visual_enviro.hxx>
  72
  73 #include <Time/light.hxx>
  74 #include <Time/light.hxx>
  75 #include <Aircraft/aircraft.hxx>
  76 #include <Cockpit/panel.hxx>
  77 #include <Cockpit/cockpit.hxx>
  78 #include <Cockpit/hud.hxx>
  79 #include <Model/panelnode.hxx>
  80 #include <Model/modelmgr.hxx>
  81 #include <Model/acmodel.hxx>
  82 #include <Scenery/scenery.hxx>
  83 #include <Scenery/redout.hxx>
  84 #include <Scenery/tilemgr.hxx>
  85 #include <GUI/new_gui.hxx>
  86 #include <Instrumentation/instrument_mgr.hxx>
  87 #include <Instrumentation/HUD/HUD.hxx>
  88 #include <Environment/precipitation_mgr.hxx>
  89
  90 #include <Include/general.hxx>
  91 #include "splash.hxx"
  92 #include "renderer.hxx"
  93 #include "main.hxx"
  94 #include "CameraGroup.hxx"
  95 #include "ViewPartitionNode.hxx"
  96
  97 // XXX Make this go away when OSG 2.2 is released.
  98 #if (FG_OSG_VERSION >= 21004)
  99 #define UPDATE_VISITOR_IN_VIEWER 1
 100 #endif
 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 static osg::ref_ptr<ViewPartitionNode> viewPartition = new ViewPartitionNode;
 370
 371 FGRenderer::FGRenderer()
 372 {
 373 #ifdef FG_JPEG_SERVER
 374    jpgRenderFrame = FGRenderer::update;
 375 #endif
 376    manipulator = new FGManipulator;
 377 }
 378
 379 FGRenderer::~FGRenderer()
 380 {
 381 #ifdef FG_JPEG_SERVER
 382    jpgRenderFrame = NULL;
 383 #endif
 384 }
 385
 386 // Initialize various GL/view parameters
 387 // XXX This should be called "preinit" or something, as it initializes
 388 // critical parts of the scene graph in addition to the splash screen.
 389 void
 390 FGRenderer::splashinit( void ) {
 391     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 392     mRealRoot = dynamic_cast<osg::Group*>(viewer->getSceneData());
 393     mRealRoot->addChild(fgCreateSplashNode());
 394     mFrameStamp = viewer->getFrameStamp();
 395     // Scene doesn't seem to pass the frame stamp to the update
 396     // visitor automatically.
 397     mUpdateVisitor->setFrameStamp(mFrameStamp.get());
 398 #ifdef UPDATE_VISITOR_IN_VIEWER
 399     viewer->setUpdateVisitor(mUpdateVisitor.get());
 400 #else
 401     osgViewer::Scene* scene = viewer->getScene();
 402     scene->setUpdateVisitor(mUpdateVisitor.get());
 403 #endif
 404 }
 405
 406 void
 407 FGRenderer::init( void )
 408 {
 409     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 410     osg::initNotifyLevel();
 411
 412     // The number of polygon-offset "units" to place between layers.  In
 413     // principle, one is supposed to be enough.  In practice, I find that
 414     // my hardware/driver requires many more.
 415     osg::PolygonOffset::setUnitsMultiplier(1);
 416     osg::PolygonOffset::setFactorMultiplier(1);
 417
 418     // Go full screen if requested ...
 419     if ( fgGetBool("/sim/startup/fullscreen") )
 420         fgOSFullScreen();
 421
 422     viewer->getCamera()
 423         ->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 424
 425     osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
 426
 427     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
 428
 429     stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
 430     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 431
 432     stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
 433     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
 434     stateSet->setAttribute(new osg::BlendFunc);
 435     stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
 436
 437     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 438
 439     // this will be set below
 440     stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
 441
 442     osg::Material* material = new osg::Material;
 443     stateSet->setAttribute(material);
 444
 445     stateSet->setTextureAttribute(0, new osg::TexEnv);
 446     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 447
 448     osg::Hint* hint = new osg::Hint(GL_FOG_HINT, GL_DONT_CARE);
 449     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/fog"));
 450     stateSet->setAttribute(hint);
 451     hint = new osg::Hint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
 452     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/polygon-smooth"));
 453     stateSet->setAttribute(hint);
 454     hint = new osg::Hint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
 455     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/line-smooth"));
 456     stateSet->setAttribute(hint);
 457     hint = new osg::Hint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
 458     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/point-smooth"));
 459     stateSet->setAttribute(hint);
 460     hint = new osg::Hint(GL_PERSPECTIVE_CORRECTION_HINT, GL_DONT_CARE);
 461     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/perspective-correction"));
 462     stateSet->setAttribute(hint);
 463
 464     osg::Group* sceneGroup = new osg::Group;
 465     sceneGroup->addChild(globals->get_scenery()->get_scene_graph());
 466     sceneGroup->setNodeMask(~simgear::BACKGROUND_BIT);
 467
 468     //sceneGroup->addChild(thesky->getCloudRoot());
 469
 470     stateSet = sceneGroup->getOrCreateStateSet();
 471     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 472
 473     // need to update the light on every frame
 474     osg::LightSource* lightSource = new osg::LightSource;
 475     lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
 476     // relative because of CameraView being just a clever transform node
 477     lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
 478     lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
 479
 480     lightSource->addChild(sceneGroup);
 481     lightSource->addChild(thesky->getPreRoot());
 482     mRoot->addChild(lightSource);
 483
 484     stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
 485     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
 486     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 487
 488     // enable disable specular highlights.
 489     // is the place where we might plug in an other fragment shader ...
 490     osg::LightModel* lightModel = new osg::LightModel;
 491     lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
 492     stateSet->setAttribute(lightModel);
 493
 494     // switch to enable wireframe
 495     osg::PolygonMode* polygonMode = new osg::PolygonMode;
 496     polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
 497     stateSet->setAttributeAndModes(polygonMode);
 498
 499     // scene fog handling
 500     osg::Fog* fog = new osg::Fog;
 501     fog->setUpdateCallback(new FGFogUpdateCallback);
 502     stateSet->setAttributeAndModes(fog);
 503     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
 504
 505     // plug in the GUI
 506     osg::Camera* guiCamera = getGUICamera(CameraGroup::getDefault());
 507     if (guiCamera) {
 508         osg::Geode* geode = new osg::Geode;
 509         geode->addDrawable(new SGPuDrawable);
 510         geode->addDrawable(new SGHUDAndPanelDrawable);
 511         guiCamera->addChild(geode);
 512     }
 513     osg::Switch* sw = new osg::Switch;
 514     sw->setUpdateCallback(new FGScenerySwitchCallback);
 515     sw->addChild(mRoot.get());
 516     viewPartition->addChild(sw);
 517     viewPartition->addChild(thesky->getCloudRoot());
 518
 519     mRealRoot->addChild(viewPartition.get());
 520     mRealRoot->addChild(FGCreateRedoutNode());
 521 }
 522
 523
 524 // Update all Visuals (redraws anything graphics related)
 525 void
 526 FGRenderer::update( bool refresh_camera_settings ) {
 527     bool scenery_loaded = fgGetBool("sim/sceneryloaded")
 528                           || fgGetBool("sim/sceneryloaded-override");
 529     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 530     if ( idle_state < 1000 || !scenery_loaded ) {
 531         fgSetDouble("/sim/startup/splash-alpha", 1.0);
 532
 533         // Keep resetting sim time while the sim is initializing
 534         // the splash screen is now in the scenegraph
 535         globals->set_sim_time_sec( 0.0 );
 536         return;
 537     }
 538
 539     // Fade out the splash screen over the first three seconds.
 540     double sAlpha = SGMiscd::max(0, (2.5 - globals->get_sim_time_sec()) / 2.5);
 541     fgSetDouble("/sim/startup/splash-alpha", sAlpha);
 542
 543     bool skyblend = fgGetBool("/sim/rendering/skyblend");
 544     bool use_point_sprites = fgGetBool("/sim/rendering/point-sprites");
 545     bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
 546     bool distance_attenuation
 547         = fgGetBool("/sim/rendering/distance-attenuation");
 548     // OSGFIXME
 549     SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
 550                                   distance_attenuation );
 551
 552     static const SGPropertyNode *groundlevel_nearplane
 553         = fgGetNode("/sim/current-view/ground-level-nearplane-m");
 554
 555     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 556
 557     // update fog params
 558     double actual_visibility;
 559     if (fgGetBool("/environment/clouds/status")) {
 560         actual_visibility = thesky->get_visibility();
 561     } else {
 562         actual_visibility = fgGetDouble("/environment/visibility-m");
 563     }
 564
 565     // idle_state is now 1000 meaning we've finished all our
 566     // initializations and are running the main loop, so this will
 567     // now work without seg faulting the system.
 568
 569     FGViewer *current__view = globals->get_current_view();
 570     // Force update of center dependent values ...
 571     current__view->set_dirty();
 572
 573     if ( refresh_camera_settings ) {
 574         // update view port
 575         resize( fgGetInt("/sim/startup/xsize"),
 576                 fgGetInt("/sim/startup/ysize") );
 577     }
 578     osg::Camera *camera = viewer->getCamera();
 579
 580     if ( skyblend ) {
 581
 582         if ( fgGetBool("/sim/rendering/textures") ) {
 583             SGVec4f clearColor(l->adj_fog_color());
 584             camera->setClearColor(clearColor.osg());
 585         }
 586     } else {
 587         SGVec4f clearColor(l->sky_color());
 588         camera->setClearColor(clearColor.osg());
 589     }
 590
 591     // update fog params if visibility has changed
 592     double visibility_meters = fgGetDouble("/environment/visibility-m");
 593     thesky->set_visibility(visibility_meters);
 594
 595     thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
 596                         ( global_multi_loop * fgGetInt("/sim/speed-up") )
 597                         / (double)fgGetInt("/sim/model-hz") );
 598
 599     // update the sky dome
 600     if ( skyblend ) {
 601
 602         // The sun and moon distances are scaled down versions
 603         // of the actual distance to get both the moon and the sun
 604         // within the range of the far clip plane.
 605         // Moon distance:    384,467 kilometers
 606         // Sun distance: 150,000,000 kilometers
 607
 608         double sun_horiz_eff, moon_horiz_eff;
 609         if (fgGetBool("/sim/rendering/horizon-effect")) {
 610            sun_horiz_eff = 0.67+pow(0.5+cos(l->get_sun_angle())*2/2, 0.33)/3;
 611            moon_horiz_eff = 0.67+pow(0.5+cos(l->get_moon_angle())*2/2, 0.33)/3;
 612         } else {
 613            sun_horiz_eff = moon_horiz_eff = 1.0;
 614         }
 615
 616         static SGSkyState sstate;
 617
 618         sstate.view_pos  = toVec3f(current__view->get_view_pos());
 619         sstate.zero_elev = toVec3f(current__view->get_zero_elev());
 620         sstate.view_up   = current__view->get_world_up();
 621         sstate.lon       = current__view->getLongitude_deg()
 622                             * SGD_DEGREES_TO_RADIANS;
 623         sstate.lat       = current__view->getLatitude_deg()
 624                             * SGD_DEGREES_TO_RADIANS;
 625         sstate.alt       = current__view->getAltitudeASL_ft()
 626                             * SG_FEET_TO_METER;
 627         sstate.spin      = l->get_sun_rotation();
 628         sstate.gst       = globals->get_time_params()->getGst();
 629         sstate.sun_ra    = globals->get_ephem()->getSunRightAscension();
 630         sstate.sun_dec   = globals->get_ephem()->getSunDeclination();
 631         sstate.sun_dist  = 50000.0 * sun_horiz_eff;
 632         sstate.moon_ra   = globals->get_ephem()->getMoonRightAscension();
 633         sstate.moon_dec  = globals->get_ephem()->getMoonDeclination();
 634         sstate.moon_dist = 40000.0 * moon_horiz_eff;
 635         sstate.sun_angle = l->get_sun_angle();
 636
 637
 638         /*
 639          SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
 640          << l->sky_color()[0] << " "
 641          << l->sky_color()[1] << " "
 642          << l->sky_color()[2] << " "
 643          << l->sky_color()[3] );
 644         SG_LOG( SG_GENERAL, SG_BULK, "    fog = "
 645          << l->fog_color()[0] << " "
 646          << l->fog_color()[1] << " "
 647          << l->fog_color()[2] << " "
 648          << l->fog_color()[3] );
 649         SG_LOG( SG_GENERAL, SG_BULK,
 650                 "    sun_angle = " << l->sun_angle
 651          << "    moon_angle = " << l->moon_angle );
 652         */
 653
 654         static SGSkyColor scolor;
 655
 656         scolor.sky_color   = SGVec3f(l->sky_color().data());
 657         scolor.fog_color   = SGVec3f(l->adj_fog_color().data());
 658         scolor.cloud_color = SGVec3f(l->cloud_color().data());
 659         scolor.sun_angle   = l->get_sun_angle();
 660         scolor.moon_angle  = l->get_moon_angle();
 661         scolor.nplanets    = globals->get_ephem()->getNumPlanets();
 662         scolor.nstars      = globals->get_ephem()->getNumStars();
 663         scolor.planet_data = globals->get_ephem()->getPlanets();
 664         scolor.star_data   = globals->get_ephem()->getStars();
 665
 666         thesky->reposition( sstate, delta_time_sec );
 667         thesky->repaint( scolor );
 668
 669         /*
 670         SG_LOG( SG_GENERAL, SG_BULK,
 671                 "thesky->reposition( view_pos = " << view_pos[0] << " "
 672          << view_pos[1] << " " << view_pos[2] );
 673         SG_LOG( SG_GENERAL, SG_BULK,
 674                 "    zero_elev = " << zero_elev[0] << " "
 675          << zero_elev[1] << " " << zero_elev[2]
 676          << " lon = " << cur_fdm_state->get_Longitude()
 677          << " lat = " << cur_fdm_state->get_Latitude() );
 678         SG_LOG( SG_GENERAL, SG_BULK,
 679                 "    sun_rot = " << l->get_sun_rotation
 680          << " gst = " << SGTime::cur_time_params->getGst() );
 681         SG_LOG( SG_GENERAL, SG_BULK,
 682              "    sun ra = " << globals->get_ephem()->getSunRightAscension()
 683           << " sun dec = " << globals->get_ephem()->getSunDeclination()
 684           << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
 685           << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
 686         */
 687
 688         //OSGFIXME
 689 //         shadows->setupShadows(
 690 //           current__view->getLongitude_deg(),
 691 //           current__view->getLatitude_deg(),
 692 //           globals->get_time_params()->getGst(),
 693 //           globals->get_ephem()->getSunRightAscension(),
 694 //           globals->get_ephem()->getSunDeclination(),
 695 //           l->get_sun_angle());
 696
 697     }
 698
 699 //     sgEnviro.setLight(l->adj_fog_color());
 700 //     sgEnviro.startOfFrame(current__view->get_view_pos(),
 701 //         current__view->get_world_up(),
 702 //         current__view->getLongitude_deg(),
 703 //         current__view->getLatitude_deg(),
 704 //         current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
 705 //         delta_time_sec);
 706
 707     // OSGFIXME
 708 //     sgEnviro.drawLightning();
 709
 710 //        double current_view_origin_airspeed_horiz_kt =
 711 //         fgGetDouble("/velocities/airspeed-kt", 0.0)
 712 //                        * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
 713 //                                * SGD_DEGREES_TO_RADIANS);
 714
 715     // OSGFIXME
 716 //     if( is_internal )
 717 //         shadows->endOfFrame();
 718
 719     // need to call the update visitor once
 720     mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
 721     mUpdateVisitor->setViewData(current__view->getViewPosition(),
 722                                 current__view->getViewOrientation());
 723     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
 724     mUpdateVisitor->setLight(direction, l->scene_ambient(),
 725                              l->scene_diffuse(), l->scene_specular(),
 726                              l->adj_fog_color(),
 727                              l->get_sun_angle()*SGD_RADIANS_TO_DEGREES);
 728     mUpdateVisitor->setVisibility(actual_visibility);
 729     viewPartition->setVisibility(actual_visibility);
 730     simgear::GroundLightManager::instance()->update(mUpdateVisitor.get());
 731     bool hotspots = fgGetBool("/sim/panel-hotspots");
 732     osg::Node::NodeMask cullMask = ~simgear::LIGHTS_BITS & ~simgear::PICK_BIT;
 733     cullMask |= simgear::GroundLightManager::instance()
 734         ->getLightNodeMask(mUpdateVisitor.get());
 735     if (hotspots)
 736         cullMask |= simgear::PICK_BIT;
 737     camera->setCullMask(cullMask);
 738     // XXX
 739     for (int i = 0; i < viewer->getNumSlaves(); ++i)
 740         viewer->getSlave(i)._camera->setCullMask(cullMask);
 741 }
 742
 743
 744
 745 // options.cxx needs to see this for toggle_panel()
 746 // Handle new window size or exposure
 747 void
 748 FGRenderer::resize( int width, int height ) {
 749     int view_h;
 750
 751     if ( (!fgGetBool("/sim/virtual-cockpit"))
 752          && fgPanelVisible() && idle_state == 1000 ) {
 753         view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
 754                              globals->get_current_panel()->getYOffset()) / 768.0);
 755     } else {
 756         view_h = height;
 757     }
 758
 759     static int lastwidth = 0;
 760     static int lastheight = 0;
 761     if (width != lastwidth)
 762         fgSetInt("/sim/startup/xsize", lastwidth = width);
 763     if (height != lastheight)
 764         fgSetInt("/sim/startup/ysize", lastheight = height);
 765
 766     // for all views
 767     FGViewMgr *viewmgr = globals->get_viewmgr();
 768     if (viewmgr) {
 769       for ( int i = 0; i < viewmgr->size(); ++i ) {
 770         viewmgr->get_view(i)->
 771           set_aspect_ratio((float)view_h / (float)width);
 772       }
 773     }
 774 }
 775
 776 void FGRenderer::setCameraParameters(float vfov, float aspectRatio,
 777                                      float zNear, float zFar)
 778 {
 779     zNear = .1;
 780     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 781     viewer->getCamera()->setProjectionMatrixAsPerspective(vfov,
 782                                                           1.0f / aspectRatio,
 783                                                           zNear, zFar);
 784
 785 }
 786 bool
 787 FGRenderer::pick(std::vector<SGSceneryPick>& pickList,
 788                  const osgGA::GUIEventAdapter* ea)
 789 {
 790     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 791     // wipe out the return ...
 792     pickList.clear();
 793     typedef osgUtil::LineSegmentIntersector::Intersections Intersections;
 794     Intersections intersections;
 795
 796     if (!computeIntersections(CameraGroup::getDefault(), ea, intersections))
 797         return false;
 798     for (Intersections::iterator hit = intersections.begin(),
 799              e = intersections.end();
 800          hit != e;
 801          ++hit) {
 802         const osg::NodePath& np = hit->nodePath;
 803         osg::NodePath::const_reverse_iterator npi;
 804         for (npi = np.rbegin(); npi != np.rend(); ++npi) {
 805             SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
 806             if (!ud)
 807                 continue;
 808             for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
 809                 SGPickCallback* pickCallback = ud->getPickCallback(i);
 810                 if (!pickCallback)
 811                     continue;
 812                 SGSceneryPick sceneryPick;
 813                 sceneryPick.info.local = SGVec3d(hit->getLocalIntersectPoint());
 814                 sceneryPick.info.wgs84 = SGVec3d(hit->getWorldIntersectPoint());
 815                 sceneryPick.callback = pickCallback;
 816                 pickList.push_back(sceneryPick);
 817             }
 818         }
 819     }
 820     return !pickList.empty();
 821 }
 822
 823 void
 824 FGRenderer::addCamera(osg::Camera* camera, bool useSceneData)
 825 {
 826     mRealRoot->addChild(camera);
 827 }
 828
 829 bool
 830 fgDumpSceneGraphToFile(const char* filename)
 831 {
 832     return osgDB::writeNodeFile(*mRealRoot.get(), filename);
 833 }
 834
 835 bool
 836 fgDumpTerrainBranchToFile(const char* filename)
 837 {
 838     return osgDB::writeNodeFile( *globals->get_scenery()->get_terrain_branch(),
 839                                  filename );
 840 }
 841
 842 // For debugging
 843 bool
 844 fgDumpNodeToFile(osg::Node* node, const char* filename)
 845 {
 846     return osgDB::writeNodeFile(*node, filename);
 847 }
 848 // end of renderer.cxx
 849