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 // $Id$
  23
  24
  25 #ifdef HAVE_CONFIG_H
  26 #  include <config.h>
  27 #endif
  28
  29 #include <simgear/compiler.h>
  30
  31 #ifdef HAVE_WINDOWS_H
  32 #  include <windows.h>
  33 #endif
  34
  35 #include <osg/ref_ptr>
  36 #include <osg/AlphaFunc>
  37 #include <osg/BlendFunc>
  38 #include <osg/Camera>
  39 #include <osg/CullFace>
  40 #include <osg/Depth>
  41 #include <osg/Fog>
  42 #include <osg/Group>
  43 #include <osg/Hint>
  44 #include <osg/Light>
  45 #include <osg/LightModel>
  46 #include <osg/LightSource>
  47 #include <osg/NodeCallback>
  48 #include <osg/Notify>
  49 #include <osg/PolygonMode>
  50 #include <osg/PolygonOffset>
  51 #include <osg/ShadeModel>
  52 #include <osg/Version>
  53 #include <osg/TexEnv>
  54
  55 #include <osgUtil/SceneView>
  56 #include <osgUtil/UpdateVisitor>
  57 #include <osgUtil/IntersectVisitor>
  58 #include <osgUtil/LineSegmentIntersector>
  59
  60 #include <osg/io_utils>
  61 #include <osgDB/WriteFile>
  62 #include <osgDB/ReadFile>
  63 #include <sstream>
  64
  65 #include <simgear/math/SGMath.hxx>
  66 #include <simgear/screen/extensions.hxx>
  67 #include <simgear/scene/material/matlib.hxx>
  68 #include <simgear/scene/model/animation.hxx>
  69 #include <simgear/scene/model/placement.hxx>
  70 #include <simgear/scene/util/SGUpdateVisitor.hxx>
  71 #include <simgear/scene/util/RenderConstants.hxx>
  72 #include <simgear/scene/tgdb/GroundLightManager.hxx>
  73 #include <simgear/scene/tgdb/pt_lights.hxx>
  74 #include <simgear/props/props.hxx>
  75 #include <simgear/timing/sg_time.hxx>
  76 #include <simgear/ephemeris/ephemeris.hxx>
  77 #include <simgear/math/sg_random.h>
  78 #ifdef FG_JPEG_SERVER
  79 #include <simgear/screen/jpgfactory.hxx>
  80 #endif
  81
  82 #include <simgear/environment/visual_enviro.hxx>
  83
  84 #include <Scenery/tileentry.hxx>
  85 #include <Time/light.hxx>
  86 #include <Time/light.hxx>
  87 #include <Aircraft/aircraft.hxx>
  88 #include <Cockpit/panel.hxx>
  89 #include <Cockpit/cockpit.hxx>
  90 #include <Cockpit/hud.hxx>
  91 #include <Model/panelnode.hxx>
  92 #include <Model/modelmgr.hxx>
  93 #include <Model/acmodel.hxx>
  94 #include <Scenery/scenery.hxx>
  95 #include <Scenery/redout.hxx>
  96 #include <Scenery/tilemgr.hxx>
  97 #include <GUI/new_gui.hxx>
  98 #include <Instrumentation/instrument_mgr.hxx>
  99 #include <Instrumentation/HUD/HUD.hxx>
 100 #include <Environment/precipitation_mgr.hxx>
 101
 102 #include <Include/general.hxx>
 103 #include "splash.hxx"
 104 #include "renderer.hxx"
 105 #include "main.hxx"
 106 #include "ViewPartitionNode.hxx"
 107
 108 // XXX Make this go away when OSG 2.2 is released.
 109 #if (FG_OSG_VERSION >= 21004)
 110 #define UPDATE_VISITOR_IN_VIEWER 1
 111 #endif
 112
 113 class FGHintUpdateCallback : public osg::StateAttribute::Callback {
 114 public:
 115   FGHintUpdateCallback(const char* configNode) :
 116     mConfigNode(fgGetNode(configNode, true))
 117   { }
 118   virtual void operator()(osg::StateAttribute* stateAttribute,
 119                           osg::NodeVisitor*)
 120   {
 121     assert(dynamic_cast<osg::Hint*>(stateAttribute));
 122     osg::Hint* hint = static_cast<osg::Hint*>(stateAttribute);
 123
 124     const char* value = mConfigNode->getStringValue();
 125     if (!value)
 126       hint->setMode(GL_DONT_CARE);
 127     else if (0 == strcmp(value, "nicest"))
 128       hint->setMode(GL_NICEST);
 129     else if (0 == strcmp(value, "fastest"))
 130       hint->setMode(GL_FASTEST);
 131     else
 132       hint->setMode(GL_DONT_CARE);
 133   }
 134 private:
 135   SGSharedPtr<SGPropertyNode> mConfigNode;
 136 };
 137
 138
 139 class SGPuDrawable : public osg::Drawable {
 140 public:
 141   SGPuDrawable()
 142   {
 143     // Dynamic stuff, do not store geometry
 144     setUseDisplayList(false);
 145
 146     osg::StateSet* stateSet = getOrCreateStateSet();
 147     stateSet->setRenderBinDetails(1001, "RenderBin");
 148     // speed optimization?
 149     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 150     // We can do translucent menus, so why not. :-)
 151     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 152     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 153     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 154
 155     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 156
 157     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 158     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 159   }
 160   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 161   { drawImplementation(*renderInfo.getState()); }
 162   void drawImplementation(osg::State& state) const
 163   {
 164     if (!fgOSIsMainContext(state.getGraphicsContext()))
 165       return;
 166
 167     state.pushStateSet(getStateSet());
 168     state.apply();
 169     state.setActiveTextureUnit(0);
 170     state.setClientActiveTextureUnit(0);
 171     state.disableAllVertexArrays();
 172
 173     glPushAttrib(GL_ALL_ATTRIB_BITS);
 174     glPushClientAttrib(~0u);
 175
 176     puDisplay();
 177
 178     glPopClientAttrib();
 179     glPopAttrib();
 180
 181     state.popStateSet();
 182     state.dirtyAllModes();
 183     state.dirtyAllAttributes();
 184     state.dirtyAllVertexArrays();
 185   }
 186
 187   virtual osg::Object* cloneType() const { return new SGPuDrawable; }
 188   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGPuDrawable; }
 189
 190 private:
 191 };
 192
 193 class SGHUDAndPanelDrawable : public osg::Drawable {
 194 public:
 195   SGHUDAndPanelDrawable()
 196   {
 197     // Dynamic stuff, do not store geometry
 198     setUseDisplayList(false);
 199
 200     osg::StateSet* stateSet = getOrCreateStateSet();
 201     stateSet->setRenderBinDetails(1000, "RenderBin");
 202
 203     // speed optimization?
 204     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 205     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 206     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 207     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 208     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 209
 210     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 211   }
 212   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 213   { drawImplementation(*renderInfo.getState()); }
 214   void drawImplementation(osg::State& state) const
 215   {
 216 //     std::cout << state.getGraphicsContext() << std::endl;
 217     if (!fgOSIsMainContext(state.getGraphicsContext()))
 218       return;
 219
 220     state.pushStateSet(getStateSet());
 221     state.apply();
 222     state.setActiveTextureUnit(0);
 223     state.setClientActiveTextureUnit(0);
 224     state.disableAllVertexArrays();
 225
 226     glPushAttrib(GL_ALL_ATTRIB_BITS);
 227     glPushClientAttrib(~0u);
 228
 229     fgCockpitUpdate(&state);
 230
 231     FGInstrumentMgr *instr = static_cast<FGInstrumentMgr*>(globals->get_subsystem("instrumentation"));
 232     HUD *hud = static_cast<HUD*>(instr->get_subsystem("hud"));
 233     hud->draw(state);
 234
 235     // update the panel subsystem
 236     if ( globals->get_current_panel() != NULL )
 237         globals->get_current_panel()->update(state);
 238     // We don't need a state here - can be safely removed when we can pick
 239     // correctly
 240     fgUpdate3DPanels();
 241
 242     glPopClientAttrib();
 243     glPopAttrib();
 244
 245     state.popStateSet();
 246     state.dirtyAllModes();
 247     state.dirtyAllAttributes();
 248     state.dirtyAllVertexArrays();
 249   }
 250
 251   virtual osg::Object* cloneType() const { return new SGHUDAndPanelDrawable; }
 252   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGHUDAndPanelDrawable; }
 253
 254 private:
 255 };
 256
 257 class FGLightSourceUpdateCallback : public osg::NodeCallback {
 258 public:
 259   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 260   {
 261     assert(dynamic_cast<osg::LightSource*>(node));
 262     osg::LightSource* lightSource = static_cast<osg::LightSource*>(node);
 263     osg::Light* light = lightSource->getLight();
 264
 265     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 266     light->setAmbient(l->scene_ambient().osg());
 267     light->setDiffuse(l->scene_diffuse().osg());
 268     light->setSpecular(l->scene_specular().osg());
 269     SGVec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
 270     light->setPosition(position.osg());
 271     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
 272     light->setDirection(direction.osg());
 273     light->setSpotExponent(0);
 274     light->setSpotCutoff(180);
 275     light->setConstantAttenuation(1);
 276     light->setLinearAttenuation(0);
 277     light->setQuadraticAttenuation(0);
 278
 279     traverse(node, nv);
 280   }
 281 };
 282
 283 class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
 284 public:
 285   FGWireFrameModeUpdateCallback() :
 286     mWireframe(fgGetNode("/sim/rendering/wireframe"))
 287   { }
 288   virtual void operator()(osg::StateAttribute* stateAttribute,
 289                           osg::NodeVisitor*)
 290   {
 291     assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
 292     osg::PolygonMode* polygonMode;
 293     polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
 294
 295     if (mWireframe->getBoolValue())
 296       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 297                            osg::PolygonMode::LINE);
 298     else
 299       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 300                            osg::PolygonMode::FILL);
 301   }
 302 private:
 303   SGSharedPtr<SGPropertyNode> mWireframe;
 304 };
 305
 306 class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
 307 public:
 308   FGLightModelUpdateCallback() :
 309     mHighlights(fgGetNode("/sim/rendering/specular-highlight"))
 310   { }
 311   virtual void operator()(osg::StateAttribute* stateAttribute,
 312                           osg::NodeVisitor*)
 313   {
 314     assert(dynamic_cast<osg::LightModel*>(stateAttribute));
 315     osg::LightModel* lightModel;
 316     lightModel = static_cast<osg::LightModel*>(stateAttribute);
 317
 318 #if 0
 319     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 320     lightModel->setAmbientIntensity(l->scene_ambient().osg());
 321 #else
 322     lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
 323 #endif
 324     lightModel->setTwoSided(true);
 325     lightModel->setLocalViewer(false);
 326
 327     if (mHighlights->getBoolValue()) {
 328       lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
 329     } else {
 330       lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
 331     }
 332   }
 333 private:
 334   SGSharedPtr<SGPropertyNode> mHighlights;
 335 };
 336
 337 class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
 338 public:
 339   FGFogEnableUpdateCallback() :
 340     mFogEnabled(fgGetNode("/sim/rendering/fog"))
 341   { }
 342   virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
 343   {
 344     if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
 345       stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 346     } else {
 347       stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
 348     }
 349   }
 350 private:
 351   SGSharedPtr<SGPropertyNode> mFogEnabled;
 352 };
 353
 354 class FGFogUpdateCallback : public osg::StateAttribute::Callback {
 355 public:
 356   virtual void operator () (osg::StateAttribute* sa, osg::NodeVisitor* nv)
 357   {
 358     assert(dynamic_cast<SGUpdateVisitor*>(nv));
 359     assert(dynamic_cast<osg::Fog*>(sa));
 360     SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
 361     osg::Fog* fog = static_cast<osg::Fog*>(sa);
 362     fog->setMode(osg::Fog::EXP2);
 363     fog->setColor(updateVisitor->getFogColor().osg());
 364     fog->setDensity(updateVisitor->getFogExp2Density());
 365   }
 366 };
 367
 368 // update callback for the switch node guarding that splash
 369 class FGScenerySwitchCallback : public osg::NodeCallback {
 370 public:
 371   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 372   {
 373     assert(dynamic_cast<osg::Switch*>(node));
 374     osg::Switch* sw = static_cast<osg::Switch*>(node);
 375
 376     double t = globals->get_sim_time_sec();
 377     bool enabled = 0 < t;
 378     sw->setValue(0, enabled);
 379     if (!enabled)
 380       return;
 381     traverse(node, nv);
 382   }
 383 };
 384
 385 // Sky structures
 386 SGSky *thesky;
 387
 388 static osg::ref_ptr<osg::FrameStamp> mFrameStamp = new osg::FrameStamp;
 389 static osg::ref_ptr<SGUpdateVisitor> mUpdateVisitor= new SGUpdateVisitor;
 390
 391 static osg::ref_ptr<osg::Group> mRealRoot = new osg::Group;
 392
 393 static osg::ref_ptr<osg::Group> mRoot = new osg::Group;
 394
 395 static osg::ref_ptr<ViewPartitionNode> viewPartition = new ViewPartitionNode;
 396
 397 FGRenderer::FGRenderer()
 398 {
 399 #ifdef FG_JPEG_SERVER
 400    jpgRenderFrame = FGRenderer::update;
 401 #endif
 402    manipulator = new FGManipulator;
 403 }
 404
 405 FGRenderer::~FGRenderer()
 406 {
 407 #ifdef FG_JPEG_SERVER
 408    jpgRenderFrame = NULL;
 409 #endif
 410 }
 411
 412 // Initialize various GL/view parameters
 413 // XXX This should be called "preinit" or something, as it initializes
 414 // critical parts of the scene graph in addition to the splash screen.
 415 void
 416 FGRenderer::splashinit( void ) {
 417     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 418     mRealRoot = dynamic_cast<osg::Group*>(viewer->getSceneData());
 419     mRealRoot->addChild(fgCreateSplashNode());
 420     mFrameStamp = viewer->getFrameStamp();
 421     // Scene doesn't seem to pass the frame stamp to the update
 422     // visitor automatically.
 423     mUpdateVisitor->setFrameStamp(mFrameStamp.get());
 424 #ifdef UPDATE_VISITOR_IN_VIEWER
 425     viewer->setUpdateVisitor(mUpdateVisitor.get());
 426 #else
 427     osgViewer::Scene* scene = viewer->getScene();
 428     scene->setUpdateVisitor(mUpdateVisitor.get());
 429 #endif
 430 }
 431
 432 void
 433 FGRenderer::init( void ) {
 434     // The viewer can call this before the graphics context is current
 435     // in the main thread; indeed, in a multithreaded setup it might
 436     // never be current in the main thread.
 437     fgMakeCurrent();
 438     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 439     osg::initNotifyLevel();
 440
 441     // The number of polygon-offset "units" to place between layers.  In
 442     // principle, one is supposed to be enough.  In practice, I find that
 443     // my hardware/driver requires many more.
 444     osg::PolygonOffset::setUnitsMultiplier(1);
 445     osg::PolygonOffset::setFactorMultiplier(1);
 446
 447     // Go full screen if requested ...
 448     if ( fgGetBool("/sim/startup/fullscreen") )
 449         fgOSFullScreen();
 450
 451     viewer->getCamera()
 452         ->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 453
 454     osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
 455
 456     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
 457
 458     stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
 459     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 460
 461     stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
 462     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
 463     stateSet->setAttribute(new osg::BlendFunc);
 464     stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
 465
 466     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 467
 468     // this will be set below
 469     stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
 470
 471     osg::Material* material = new osg::Material;
 472     stateSet->setAttribute(material);
 473
 474     stateSet->setTextureAttribute(0, new osg::TexEnv);
 475     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 476
 477     osg::Hint* hint = new osg::Hint(GL_FOG_HINT, GL_DONT_CARE);
 478     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/fog"));
 479     stateSet->setAttribute(hint);
 480     hint = new osg::Hint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
 481     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/polygon-smooth"));
 482     stateSet->setAttribute(hint);
 483     hint = new osg::Hint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
 484     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/line-smooth"));
 485     stateSet->setAttribute(hint);
 486     hint = new osg::Hint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
 487     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/point-smooth"));
 488     stateSet->setAttribute(hint);
 489     hint = new osg::Hint(GL_PERSPECTIVE_CORRECTION_HINT, GL_DONT_CARE);
 490     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/perspective-correction"));
 491     stateSet->setAttribute(hint);
 492
 493     osg::Group* sceneGroup = new osg::Group;
 494     sceneGroup->addChild(globals->get_scenery()->get_scene_graph());
 495     sceneGroup->setNodeMask(~simgear::BACKGROUND_BIT);
 496
 497     //sceneGroup->addChild(thesky->getCloudRoot());
 498
 499     stateSet = sceneGroup->getOrCreateStateSet();
 500     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 501     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 502
 503     // need to update the light on every frame
 504     osg::LightSource* lightSource = new osg::LightSource;
 505     lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
 506     // relative because of CameraView being just a clever transform node
 507     lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
 508     lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
 509
 510     lightSource->addChild(sceneGroup);
 511     lightSource->addChild(thesky->getPreRoot());
 512     mRoot->addChild(lightSource);
 513
 514     stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
 515     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 516     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
 517     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
 518     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 519
 520     // enable disable specular highlights.
 521     // is the place where we might plug in an other fragment shader ...
 522     osg::LightModel* lightModel = new osg::LightModel;
 523     lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
 524     stateSet->setAttribute(lightModel);
 525
 526     // switch to enable wireframe
 527     osg::PolygonMode* polygonMode = new osg::PolygonMode;
 528     polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
 529     stateSet->setAttributeAndModes(polygonMode);
 530
 531     // scene fog handling
 532     osg::Fog* fog = new osg::Fog;
 533     fog->setUpdateCallback(new FGFogUpdateCallback);
 534     stateSet->setAttributeAndModes(fog);
 535     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
 536
 537     // plug in the GUI
 538     osg::Camera* guiCamera = new osg::Camera;
 539     guiCamera->setRenderOrder(osg::Camera::POST_RENDER, 100);
 540     guiCamera->setClearMask(0);
 541     GLbitfield inheritanceMask = osg::CullSettings::ALL_VARIABLES;
 542     inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
 543     inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
 544     guiCamera->setInheritanceMask(inheritanceMask);
 545     guiCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 546     guiCamera->setCullingMode(osg::CullSettings::NO_CULLING);
 547     osg::Geode* geode = new osg::Geode;
 548     geode->addDrawable(new SGPuDrawable);
 549     geode->addDrawable(new SGHUDAndPanelDrawable);
 550     guiCamera->addChild(geode);
 551
 552     osg::Switch* sw = new osg::Switch;
 553     sw->setUpdateCallback(new FGScenerySwitchCallback);
 554     sw->addChild(mRoot.get());
 555     viewPartition->addChild(sw);
 556     viewPartition->addChild(thesky->getCloudRoot());
 557
 558     mRealRoot->addChild(viewPartition.get());
 559     mRealRoot->addChild(FGCreateRedoutNode());
 560     mRealRoot->addChild(guiCamera);
 561 }
 562
 563
 564 // Update all Visuals (redraws anything graphics related)
 565 void
 566 FGRenderer::update( bool refresh_camera_settings ) {
 567     bool scenery_loaded = fgGetBool("sim/sceneryloaded")
 568                           || fgGetBool("sim/sceneryloaded-override");
 569     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 570     if ( idle_state < 1000 || !scenery_loaded ) {
 571         fgSetDouble("/sim/startup/splash-alpha", 1.0);
 572
 573         // Keep resetting sim time while the sim is initializing
 574         // the splash screen is now in the scenegraph
 575         globals->set_sim_time_sec( 0.0 );
 576         return;
 577     }
 578
 579     // Fade out the splash screen over the first three seconds.
 580     double sAlpha = SGMiscd::max(0, (2.5 - globals->get_sim_time_sec()) / 2.5);
 581     fgSetDouble("/sim/startup/splash-alpha", sAlpha);
 582
 583     bool skyblend = fgGetBool("/sim/rendering/skyblend");
 584     bool use_point_sprites = fgGetBool("/sim/rendering/point-sprites");
 585     bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
 586     bool distance_attenuation
 587         = fgGetBool("/sim/rendering/distance-attenuation");
 588     // OSGFIXME
 589     SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
 590                                   distance_attenuation );
 591
 592     static const SGPropertyNode *groundlevel_nearplane
 593         = fgGetNode("/sim/current-view/ground-level-nearplane-m");
 594
 595     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 596
 597     // update fog params
 598     double actual_visibility;
 599     if (fgGetBool("/environment/clouds/status")) {
 600         actual_visibility = thesky->get_visibility();
 601     } else {
 602         actual_visibility = fgGetDouble("/environment/visibility-m");
 603     }
 604
 605     // idle_state is now 1000 meaning we've finished all our
 606     // initializations and are running the main loop, so this will
 607     // now work without seg faulting the system.
 608
 609     FGViewer *current__view = globals->get_current_view();
 610     // Force update of center dependent values ...
 611     current__view->set_dirty();
 612
 613     if ( refresh_camera_settings ) {
 614         // update view port
 615         resize( fgGetInt("/sim/startup/xsize"),
 616                 fgGetInt("/sim/startup/ysize") );
 617
 618         SGVec3d position = current__view->getViewPosition();
 619         SGQuatd attitude = current__view->getViewOrientation();
 620         SGVec3d osgPosition = attitude.transform(-position);
 621
 622         FGManipulator *manipulator = globals->get_renderer()->getManipulator();
 623         manipulator->setPosition(position.osg());
 624         manipulator->setAttitude(attitude.osg());
 625     }
 626     osg::Camera *camera = viewer->getCamera();
 627
 628     if ( skyblend ) {
 629
 630         if ( fgGetBool("/sim/rendering/textures") ) {
 631             SGVec4f clearColor(l->adj_fog_color());
 632             camera->setClearColor(clearColor.osg());
 633         }
 634     } else {
 635         SGVec4f clearColor(l->sky_color());
 636         camera->setClearColor(clearColor.osg());
 637     }
 638
 639     // update fog params if visibility has changed
 640     double visibility_meters = fgGetDouble("/environment/visibility-m");
 641     thesky->set_visibility(visibility_meters);
 642
 643     thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
 644                         ( global_multi_loop * fgGetInt("/sim/speed-up") )
 645                         / (double)fgGetInt("/sim/model-hz") );
 646
 647     // update the sky dome
 648     if ( skyblend ) {
 649
 650         // The sun and moon distances are scaled down versions
 651         // of the actual distance to get both the moon and the sun
 652         // within the range of the far clip plane.
 653         // Moon distance:    384,467 kilometers
 654         // Sun distance: 150,000,000 kilometers
 655
 656         double sun_horiz_eff, moon_horiz_eff;
 657         if (fgGetBool("/sim/rendering/horizon-effect")) {
 658            sun_horiz_eff = 0.67+pow(0.5+cos(l->get_sun_angle())*2/2, 0.33)/3;
 659            moon_horiz_eff = 0.67+pow(0.5+cos(l->get_moon_angle())*2/2, 0.33)/3;
 660         } else {
 661            sun_horiz_eff = moon_horiz_eff = 1.0;
 662         }
 663
 664         static SGSkyState sstate;
 665
 666         sstate.view_pos  = toVec3f(current__view->get_view_pos());
 667         sstate.zero_elev = toVec3f(current__view->get_zero_elev());
 668         sstate.view_up   = current__view->get_world_up();
 669         sstate.lon       = current__view->getLongitude_deg()
 670                             * SGD_DEGREES_TO_RADIANS;
 671         sstate.lat       = current__view->getLatitude_deg()
 672                             * SGD_DEGREES_TO_RADIANS;
 673         sstate.alt       = current__view->getAltitudeASL_ft()
 674                             * SG_FEET_TO_METER;
 675         sstate.spin      = l->get_sun_rotation();
 676         sstate.gst       = globals->get_time_params()->getGst();
 677         sstate.sun_ra    = globals->get_ephem()->getSunRightAscension();
 678         sstate.sun_dec   = globals->get_ephem()->getSunDeclination();
 679         sstate.sun_dist  = 50000.0 * sun_horiz_eff;
 680         sstate.moon_ra   = globals->get_ephem()->getMoonRightAscension();
 681         sstate.moon_dec  = globals->get_ephem()->getMoonDeclination();
 682         sstate.moon_dist = 40000.0 * moon_horiz_eff;
 683         sstate.sun_angle = l->get_sun_angle();
 684
 685
 686         /*
 687          SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
 688          << l->sky_color()[0] << " "
 689          << l->sky_color()[1] << " "
 690          << l->sky_color()[2] << " "
 691          << l->sky_color()[3] );
 692         SG_LOG( SG_GENERAL, SG_BULK, "    fog = "
 693          << l->fog_color()[0] << " "
 694          << l->fog_color()[1] << " "
 695          << l->fog_color()[2] << " "
 696          << l->fog_color()[3] );
 697         SG_LOG( SG_GENERAL, SG_BULK,
 698                 "    sun_angle = " << l->sun_angle
 699          << "    moon_angle = " << l->moon_angle );
 700         */
 701
 702         static SGSkyColor scolor;
 703
 704         scolor.sky_color   = SGVec3f(l->sky_color().data());
 705         scolor.fog_color   = SGVec3f(l->adj_fog_color().data());
 706         scolor.cloud_color = SGVec3f(l->cloud_color().data());
 707         scolor.sun_angle   = l->get_sun_angle();
 708         scolor.moon_angle  = l->get_moon_angle();
 709         scolor.nplanets    = globals->get_ephem()->getNumPlanets();
 710         scolor.nstars      = globals->get_ephem()->getNumStars();
 711         scolor.planet_data = globals->get_ephem()->getPlanets();
 712         scolor.star_data   = globals->get_ephem()->getStars();
 713
 714         thesky->reposition( sstate, delta_time_sec );
 715         thesky->repaint( scolor );
 716
 717         /*
 718         SG_LOG( SG_GENERAL, SG_BULK,
 719                 "thesky->reposition( view_pos = " << view_pos[0] << " "
 720          << view_pos[1] << " " << view_pos[2] );
 721         SG_LOG( SG_GENERAL, SG_BULK,
 722                 "    zero_elev = " << zero_elev[0] << " "
 723          << zero_elev[1] << " " << zero_elev[2]
 724          << " lon = " << cur_fdm_state->get_Longitude()
 725          << " lat = " << cur_fdm_state->get_Latitude() );
 726         SG_LOG( SG_GENERAL, SG_BULK,
 727                 "    sun_rot = " << l->get_sun_rotation
 728          << " gst = " << SGTime::cur_time_params->getGst() );
 729         SG_LOG( SG_GENERAL, SG_BULK,
 730              "    sun ra = " << globals->get_ephem()->getSunRightAscension()
 731           << " sun dec = " << globals->get_ephem()->getSunDeclination()
 732           << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
 733           << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
 734         */
 735
 736         //OSGFIXME
 737 //         shadows->setupShadows(
 738 //           current__view->getLongitude_deg(),
 739 //           current__view->getLatitude_deg(),
 740 //           globals->get_time_params()->getGst(),
 741 //           globals->get_ephem()->getSunRightAscension(),
 742 //           globals->get_ephem()->getSunDeclination(),
 743 //           l->get_sun_angle());
 744
 745     }
 746
 747 //     sgEnviro.setLight(l->adj_fog_color());
 748
 749     double agl = current__view->getAltitudeASL_ft()*SG_FEET_TO_METER
 750       - current__view->getSGLocation()->get_cur_elev_m();
 751
 752     float scene_nearplane, scene_farplane;
 753     // XXX Given that the own airplane model is part of the scene
 754     // graph, should this business be ripped out? The near plane is
 755     // ignored by setCameraParameters.
 756     if ( agl > 10.0 ) {
 757         scene_nearplane = 10.0f;
 758         scene_farplane = 120000.0f;
 759     } else {
 760         scene_nearplane = groundlevel_nearplane->getDoubleValue();
 761         scene_farplane = 120000.0f;
 762     }
 763     setCameraParameters(current__view->get_v_fov(),
 764                         current__view->get_aspect_ratio(),
 765                         scene_nearplane, scene_farplane);
 766
 767 //     sgEnviro.startOfFrame(current__view->get_view_pos(),
 768 //         current__view->get_world_up(),
 769 //         current__view->getLongitude_deg(),
 770 //         current__view->getLatitude_deg(),
 771 //         current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
 772 //         delta_time_sec);
 773
 774     // OSGFIXME
 775 //     sgEnviro.drawLightning();
 776
 777 //        double current_view_origin_airspeed_horiz_kt =
 778 //         fgGetDouble("/velocities/airspeed-kt", 0.0)
 779 //                        * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
 780 //                                * SGD_DEGREES_TO_RADIANS);
 781
 782     // OSGFIXME
 783 //     if( is_internal )
 784 //         shadows->endOfFrame();
 785
 786     // need to call the update visitor once
 787     mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
 788     mUpdateVisitor->setViewData(current__view->getViewPosition(),
 789                                 current__view->getViewOrientation());
 790     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
 791     mUpdateVisitor->setLight(direction, l->scene_ambient(),
 792                              l->scene_diffuse(), l->scene_specular(),
 793                              l->adj_fog_color(),
 794                              l->get_sun_angle()*SGD_RADIANS_TO_DEGREES);
 795     mUpdateVisitor->setVisibility(actual_visibility);
 796     viewPartition->setVisibility(actual_visibility);
 797     simgear::GroundLightManager::instance()->update(mUpdateVisitor.get());
 798     bool hotspots = fgGetBool("/sim/panel-hotspots");
 799     osg::Node::NodeMask cullMask = (~simgear::LIGHTS_BITS & ~simgear::PICK_BIT
 800                                     & ~simgear::BACKGROUND_BIT);
 801     cullMask |= simgear::GroundLightManager::instance()
 802         ->getLightNodeMask(mUpdateVisitor.get());
 803     if (hotspots)
 804         cullMask |= simgear::PICK_BIT;
 805     camera->setCullMask(cullMask);
 806     // XXX
 807     for (int i = 0; i < viewer->getNumSlaves(); ++i)
 808         viewer->getSlave(i)._camera->setCullMask(cullMask);
 809 }
 810
 811
 812
 813 // options.cxx needs to see this for toggle_panel()
 814 // Handle new window size or exposure
 815 void
 816 FGRenderer::resize( int width, int height ) {
 817     int view_h;
 818
 819     if ( (!fgGetBool("/sim/virtual-cockpit"))
 820          && fgPanelVisible() && idle_state == 1000 ) {
 821         view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
 822                              globals->get_current_panel()->getYOffset()) / 768.0);
 823     } else {
 824         view_h = height;
 825     }
 826
 827     static int lastwidth = 0;
 828     static int lastheight = 0;
 829     if (width != lastwidth)
 830         fgSetInt("/sim/startup/xsize", lastwidth = width);
 831     if (height != lastheight)
 832         fgSetInt("/sim/startup/ysize", lastheight = height);
 833
 834     guiInitMouse(width, height);
 835
 836     // for all views
 837     FGViewMgr *viewmgr = globals->get_viewmgr();
 838     if (viewmgr) {
 839       for ( int i = 0; i < viewmgr->size(); ++i ) {
 840         viewmgr->get_view(i)->
 841           set_aspect_ratio((float)view_h / (float)width);
 842       }
 843     }
 844 }
 845
 846 void FGRenderer::setCameraParameters(float vfov, float aspectRatio,
 847                                      float zNear, float zFar)
 848 {
 849     zNear = .1;
 850     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 851     viewer->getCamera()->setProjectionMatrixAsPerspective(vfov,
 852                                                           1.0f / aspectRatio,
 853                                                           zNear, zFar);
 854
 855 }
 856 bool
 857 FGRenderer::pick( unsigned x, unsigned y,
 858                   std::vector<SGSceneryPick>& pickList,
 859                   const osgGA::GUIEventAdapter* ea )
 860 {
 861   osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 862   // wipe out the return ...
 863   pickList.resize(0);
 864
 865   if (viewer) {
 866     // just compute intersections in the viewers method ...
 867     typedef osgUtil::LineSegmentIntersector::Intersections Intersections;
 868     Intersections intersections;
 869     viewer->computeIntersections(ea->getX(), ea->getY(), intersections);
 870
 871     Intersections::iterator hit;
 872     for (hit = intersections.begin(); hit != intersections.end(); ++hit) {
 873       const osg::NodePath& np = hit->nodePath;
 874       osg::NodePath::const_reverse_iterator npi;
 875       for (npi = np.rbegin(); npi != np.rend(); ++npi) {
 876         SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
 877         if (!ud)
 878           continue;
 879         for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
 880           SGPickCallback* pickCallback = ud->getPickCallback(i);
 881           if (!pickCallback)
 882             continue;
 883           SGSceneryPick sceneryPick;
 884           sceneryPick.info.local = SGVec3d(hit->getLocalIntersectPoint());
 885           sceneryPick.info.wgs84 = SGVec3d(hit->getWorldIntersectPoint());
 886           sceneryPick.callback = pickCallback;
 887           pickList.push_back(sceneryPick);
 888         }
 889       }
 890     }
 891     return !pickList.empty();
 892   } else {                      // we can get called early ...
 893     return false;
 894   }
 895 }
 896
 897 void
 898 FGRenderer::addCamera(osg::Camera* camera, bool useSceneData)
 899 {
 900     mRealRoot->addChild(camera);
 901 }
 902
 903 bool
 904 fgDumpSceneGraphToFile(const char* filename)
 905 {
 906     return osgDB::writeNodeFile(*mRealRoot.get(), filename);
 907 }
 908
 909 bool
 910 fgDumpTerrainBranchToFile(const char* filename)
 911 {
 912     return osgDB::writeNodeFile( *globals->get_scenery()->get_terrain_branch(),
 913                                  filename );
 914 }
 915
 916 // For debugging
 917 bool
 918 fgDumpNodeToFile(osg::Node* node, const char* filename)
 919 {
 920     return osgDB::writeNodeFile(*node, filename);
 921 }
 922 // end of renderer.cxx
 923