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