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/CameraView>
  40 #include <osg/CullFace>
  41 #include <osg/Depth>
  42 #include <osg/Fog>
  43 #include <osg/Group>
  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/TexEnv>
  53
  54 #include <osgUtil/SceneView>
  55 #include <osgUtil/UpdateVisitor>
  56 #include <osgUtil/IntersectVisitor>
  57
  58 #include <osg/io_utils>
  59 #include <osgDB/WriteFile>
  60 #include <osgDB/ReadFile>
  61 #include <sstream>
  62
  63 #include <simgear/math/SGMath.hxx>
  64 #include <simgear/screen/extensions.hxx>
  65 #include <simgear/scene/material/matlib.hxx>
  66 #include <simgear/scene/model/animation.hxx>
  67 #include <simgear/scene/model/model.hxx>
  68 #include <simgear/scene/model/modellib.hxx>
  69 #include <simgear/scene/model/placement.hxx>
  70 #include <simgear/scene/util/SGUpdateVisitor.hxx>
  71 #include <simgear/scene/tgdb/pt_lights.hxx>
  72 #include <simgear/props/props.hxx>
  73 #include <simgear/timing/sg_time.hxx>
  74 #include <simgear/ephemeris/ephemeris.hxx>
  75 #include <simgear/math/sg_random.h>
  76 #ifdef FG_JPEG_SERVER
  77 #include <simgear/screen/jpgfactory.hxx>
  78 #endif
  79
  80 #include <simgear/environment/visual_enviro.hxx>
  81
  82 #include <Scenery/tileentry.hxx>
  83 #include <Time/light.hxx>
  84 #include <Time/light.hxx>
  85 #include <Aircraft/aircraft.hxx>
  86 #include <Cockpit/panel.hxx>
  87 #include <Cockpit/cockpit.hxx>
  88 #include <Cockpit/hud.hxx>
  89 #include <Model/panelnode.hxx>
  90 #include <Model/modelmgr.hxx>
  91 #include <Model/acmodel.hxx>
  92 #include <Scenery/scenery.hxx>
  93 #include <Scenery/redout.hxx>
  94 #include <Scenery/tilemgr.hxx>
  95 #include <GUI/new_gui.hxx>
  96 #include <Instrumentation/instrument_mgr.hxx>
  97 #include <Instrumentation/HUD/HUD.hxx>
  98
  99 #include "splash.hxx"
 100 #include "renderer.hxx"
 101 #include "main.hxx"
 102
 103 class SGPuDrawable : public osg::Drawable {
 104 public:
 105   SGPuDrawable()
 106   {
 107     // Dynamic stuff, do not store geometry
 108     setUseDisplayList(false);
 109
 110     osg::StateSet* stateSet = getOrCreateStateSet();
 111     stateSet->setRenderBinDetails(1001, "RenderBin");
 112     // speed optimization?
 113     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 114     // We can do translucent menus, so why not. :-)
 115     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 116     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 117     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 118
 119     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 120
 121     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 122     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 123   }
 124   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 125   { drawImplementation(*renderInfo.getState()); }
 126   void drawImplementation(osg::State& state) const
 127   {
 128     state.pushStateSet(getStateSet());
 129     state.apply();
 130     state.setActiveTextureUnit(0);
 131     state.setClientActiveTextureUnit(0);
 132     state.disableAllVertexArrays();
 133
 134     glPushAttrib(GL_ALL_ATTRIB_BITS);
 135     glPushClientAttrib(~0u);
 136
 137     puDisplay();
 138
 139     glPopClientAttrib();
 140     glPopAttrib();
 141
 142     state.popStateSet();
 143     state.dirtyAllModes();
 144     state.dirtyAllAttributes();
 145     state.dirtyAllVertexArrays();
 146   }
 147
 148   virtual osg::Object* cloneType() const { return new SGPuDrawable; }
 149   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGPuDrawable; }
 150
 151 private:
 152 };
 153
 154 class SGHUDAndPanelDrawable : public osg::Drawable {
 155 public:
 156   SGHUDAndPanelDrawable()
 157   {
 158     // Dynamic stuff, do not store geometry
 159     setUseDisplayList(false);
 160
 161     osg::StateSet* stateSet = getOrCreateStateSet();
 162     stateSet->setRenderBinDetails(1000, "RenderBin");
 163
 164     // speed optimization?
 165     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 166     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 167     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 168     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 169     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 170
 171     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 172   }
 173   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 174   { drawImplementation(*renderInfo.getState()); }
 175   void drawImplementation(osg::State& state) const
 176   {
 177     state.pushStateSet(getStateSet());
 178     state.apply();
 179     state.setActiveTextureUnit(0);
 180     state.setClientActiveTextureUnit(0);
 181     state.disableAllVertexArrays();
 182
 183     glPushAttrib(GL_ALL_ATTRIB_BITS);
 184     glPushClientAttrib(~0u);
 185
 186     fgCockpitUpdate(&state);
 187
 188     FGInstrumentMgr *instr = static_cast<FGInstrumentMgr*>(globals->get_subsystem("instrumentation"));
 189     HUD *hud = static_cast<HUD*>(instr->get_subsystem("hud"));
 190     hud->draw(state);
 191
 192     // update the panel subsystem
 193     if ( globals->get_current_panel() != NULL )
 194         globals->get_current_panel()->update(state);
 195     // We don't need a state here - can be safely removed when we can pick
 196     // correctly
 197     fgUpdate3DPanels();
 198
 199     glPopClientAttrib();
 200     glPopAttrib();
 201
 202     state.popStateSet();
 203     state.dirtyAllModes();
 204     state.dirtyAllAttributes();
 205     state.dirtyAllVertexArrays();
 206   }
 207
 208   virtual osg::Object* cloneType() const { return new SGHUDAndPanelDrawable; }
 209   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGHUDAndPanelDrawable; }
 210
 211 private:
 212 };
 213
 214 class FGLightSourceUpdateCallback : public osg::NodeCallback {
 215 public:
 216   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 217   {
 218     assert(dynamic_cast<osg::LightSource*>(node));
 219     osg::LightSource* lightSource = static_cast<osg::LightSource*>(node);
 220     osg::Light* light = lightSource->getLight();
 221
 222     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 223     light->setAmbient(l->scene_ambient().osg());
 224     light->setDiffuse(l->scene_diffuse().osg());
 225     light->setSpecular(l->scene_specular().osg());
 226     SGVec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
 227     light->setPosition(position.osg());
 228     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
 229     light->setDirection(direction.osg());
 230     light->setSpotExponent(0);
 231     light->setSpotCutoff(180);
 232     light->setConstantAttenuation(1);
 233     light->setLinearAttenuation(0);
 234     light->setQuadraticAttenuation(0);
 235
 236     traverse(node, nv);
 237   }
 238 };
 239
 240 class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
 241 public:
 242   FGWireFrameModeUpdateCallback() :
 243     mWireframe(fgGetNode("/sim/rendering/wireframe"))
 244   { }
 245   virtual void operator()(osg::StateAttribute* stateAttribute,
 246                           osg::NodeVisitor*)
 247   {
 248     assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
 249     osg::PolygonMode* polygonMode;
 250     polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
 251
 252     if (mWireframe->getBoolValue())
 253       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 254                            osg::PolygonMode::LINE);
 255     else
 256       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 257                            osg::PolygonMode::FILL);
 258   }
 259 private:
 260   SGSharedPtr<SGPropertyNode> mWireframe;
 261 };
 262
 263 class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
 264 public:
 265   FGLightModelUpdateCallback() :
 266     mHighlights(fgGetNode("/sim/rendering/specular-highlight"))
 267   { }
 268   virtual void operator()(osg::StateAttribute* stateAttribute,
 269                           osg::NodeVisitor*)
 270   {
 271     assert(dynamic_cast<osg::LightModel*>(stateAttribute));
 272     osg::LightModel* lightModel;
 273     lightModel = static_cast<osg::LightModel*>(stateAttribute);
 274
 275 #if 0
 276     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 277     lightModel->setAmbientIntensity(l->scene_ambient().osg());
 278 #else
 279     lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
 280 #endif
 281     lightModel->setTwoSided(true);
 282     lightModel->setLocalViewer(false);
 283
 284     if (mHighlights->getBoolValue()) {
 285       lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
 286     } else {
 287       lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
 288     }
 289   }
 290 private:
 291   SGSharedPtr<SGPropertyNode> mHighlights;
 292 };
 293
 294 class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
 295 public:
 296   FGFogEnableUpdateCallback() :
 297     mFogEnabled(fgGetNode("/sim/rendering/fog"))
 298   { }
 299   virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
 300   {
 301     if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
 302       stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 303     } else {
 304       stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
 305     }
 306   }
 307 private:
 308   SGSharedPtr<SGPropertyNode> mFogEnabled;
 309 };
 310
 311 class FGFogUpdateCallback : public osg::StateAttribute::Callback {
 312 public:
 313   virtual void operator () (osg::StateAttribute* sa, osg::NodeVisitor* nv)
 314   {
 315     assert(dynamic_cast<SGUpdateVisitor*>(nv));
 316     assert(dynamic_cast<osg::Fog*>(sa));
 317     SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
 318     osg::Fog* fog = static_cast<osg::Fog*>(sa);
 319     fog->setMode(osg::Fog::EXP2);
 320     fog->setColor(updateVisitor->getFogColor().osg());
 321     fog->setDensity(updateVisitor->getFogExp2Density());
 322   }
 323 };
 324
 325 // update callback for the switch node guarding that splash
 326 class FGScenerySwitchCallback : public osg::NodeCallback {
 327 public:
 328   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 329   {
 330     assert(dynamic_cast<osg::Switch*>(node));
 331     osg::Switch* sw = static_cast<osg::Switch*>(node);
 332
 333     double t = globals->get_sim_time_sec();
 334     bool enabled = 0 < t;
 335     sw->setValue(0, enabled);
 336     if (!enabled)
 337       return;
 338     traverse(node, nv);
 339   }
 340 };
 341
 342 // Sky structures
 343 SGSky *thesky;
 344
 345 osg::ref_ptr<osgUtil::SceneView> sceneView = new osgUtil::SceneView;  // This SceneView is used by class FGJpegHttpd ( jpg-httpd.cxx )
 346 static osg::ref_ptr<osg::FrameStamp> mFrameStamp = new osg::FrameStamp;
 347 static osg::ref_ptr<SGUpdateVisitor> mUpdateVisitor= new SGUpdateVisitor;
 348
 349 static osg::ref_ptr<osg::Group> mRealRoot = new osg::Group;
 350
 351 static osg::ref_ptr<osg::Group> mRoot = new osg::Group;
 352
 353 static osg::ref_ptr<osg::CameraView> mCameraView = new osg::CameraView;
 354 static osg::ref_ptr<osg::Camera> mBackGroundCamera = new osg::Camera;
 355
 356 FGRenderer::FGRenderer()
 357 {
 358 #ifdef FG_JPEG_SERVER
 359    jpgRenderFrame = FGRenderer::update;
 360 #endif
 361 #ifdef ENABLE_OSGVIEWER
 362    manipulator = new FGManipulator;
 363 #endif
 364 }
 365
 366 FGRenderer::~FGRenderer()
 367 {
 368 #ifdef FG_JPEG_SERVER
 369    jpgRenderFrame = NULL;
 370 #endif
 371 }
 372
 373 // Initialize various GL/view parameters
 374 // XXX This should be called "preinit" or something, as it initializes
 375 // critical parts of the scene graph in addition to the splash screen.
 376 void
 377 FGRenderer::splashinit( void ) {
 378     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 379     if (viewer) {
 380         sceneView = 0;
 381         mRealRoot = dynamic_cast<osg::Group*>(viewer->getSceneData());
 382         mRealRoot->addChild(fgCreateSplashNode());
 383         osgViewer::Scene* scene = viewer->getScene();
 384         mFrameStamp = viewer->getFrameStamp();
 385         // Scene doesn't seem to pass the frame stamp to the update
 386         // visitor automatically.
 387         mUpdateVisitor->setFrameStamp(mFrameStamp.get());
 388         scene->setUpdateVisitor(mUpdateVisitor.get());
 389     } else {
 390         // Add the splash screen node
 391         mRealRoot->addChild(fgCreateSplashNode());
 392         sceneView->setSceneData(mRealRoot.get());
 393         sceneView->setDefaults(osgUtil::SceneView::COMPILE_GLOBJECTS_AT_INIT);
 394         sceneView->setFrameStamp(mFrameStamp.get());
 395         sceneView->setUpdateVisitor(mUpdateVisitor.get());
 396     }
 397 }
 398
 399 void
 400 FGRenderer::init( void ) {
 401     // The viewer can call this before the graphics context is current
 402     // in the main thread; indeed, in a multithreaded setup it might
 403     // never be current in the main thread.
 404     fgMakeCurrent();
 405     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 406     osg::initNotifyLevel();
 407
 408     // The number of polygon-offset "units" to place between layers.  In
 409     // principle, one is supposed to be enough.  In practice, I find that
 410     // my hardware/driver requires many more.
 411     osg::PolygonOffset::setUnitsMultiplier(1);
 412     osg::PolygonOffset::setFactorMultiplier(1);
 413
 414     // Go full screen if requested ...
 415     if ( fgGetBool("/sim/startup/fullscreen") )
 416         fgOSFullScreen();
 417
 418     if ( (!strcmp(fgGetString("/sim/rendering/fog"), "disabled")) ||
 419          (!fgGetBool("/sim/rendering/shading"))) {
 420         // if fastest fog requested, or if flat shading force fastest
 421         glHint ( GL_FOG_HINT, GL_FASTEST );
 422     } else if ( !strcmp(fgGetString("/sim/rendering/fog"), "nicest") ) {
 423         glHint ( GL_FOG_HINT, GL_DONT_CARE );
 424     }
 425
 426     glHint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
 427     glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
 428     glHint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
 429
 430     if (viewer) {
 431         viewer->getCamera()
 432             ->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 433     } else {
 434         sceneView->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 435         sceneView->getCamera()->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 436     }
 437
 438
 439     osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
 440
 441     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
 442
 443     stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
 444     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 445
 446     stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
 447     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
 448     stateSet->setAttribute(new osg::BlendFunc);
 449     stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
 450
 451     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 452
 453     // this will be set below
 454     stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
 455
 456     osg::Material* material = new osg::Material;
 457     stateSet->setAttribute(material);
 458
 459     stateSet->setTextureAttribute(0, new osg::TexEnv);
 460     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 461
 462
 463 //     stateSet->setAttribute(new osg::CullFace(osg::CullFace::BACK));
 464 //     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::ON);
 465
 466     // this is the topmost scenegraph node for osg
 467     mBackGroundCamera->addChild(thesky->getPreRoot());
 468     mBackGroundCamera->setClearMask(0);
 469
 470     GLbitfield inheritanceMask = osg::CullSettings::ALL_VARIABLES;
 471     inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
 472     inheritanceMask &= ~osg::CullSettings::NEAR_FAR_RATIO;
 473     inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
 474     mBackGroundCamera->setInheritanceMask(inheritanceMask);
 475     mBackGroundCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 476     mBackGroundCamera->setCullingMode(osg::CullSettings::NO_CULLING);
 477     mBackGroundCamera->setRenderOrder(osg::Camera::NESTED_RENDER);
 478
 479     stateSet = mBackGroundCamera->getOrCreateStateSet();
 480     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 481
 482     osg::Group* sceneGroup = new osg::Group;
 483     sceneGroup->addChild(globals->get_scenery()->get_scene_graph());
 484     sceneGroup->addChild(thesky->getCloudRoot());
 485
 486     stateSet = sceneGroup->getOrCreateStateSet();
 487     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 488     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 489
 490     // need to update the light on every frame
 491     osg::LightSource* lightSource = new osg::LightSource;
 492     lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
 493     // relative because of CameraView being just a clever transform node
 494     lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
 495     lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
 496     mRoot->addChild(lightSource);
 497
 498     lightSource->addChild(mBackGroundCamera.get());
 499     lightSource->addChild(sceneGroup);
 500
 501
 502     stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
 503     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 504     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
 505     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
 506     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 507
 508     // enable disable specular highlights.
 509     // is the place where we might plug in an other fragment shader ...
 510     osg::LightModel* lightModel = new osg::LightModel;
 511     lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
 512     stateSet->setAttribute(lightModel);
 513
 514     // switch to enable wireframe
 515     osg::PolygonMode* polygonMode = new osg::PolygonMode;
 516     polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
 517     stateSet->setAttributeAndModes(polygonMode);
 518
 519     // scene fog handling
 520     osg::Fog* fog = new osg::Fog;
 521     fog->setUpdateCallback(new FGFogUpdateCallback);
 522     stateSet->setAttributeAndModes(fog);
 523     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
 524
 525     // plug in the GUI
 526     osg::Camera* guiCamera = new osg::Camera;
 527     guiCamera->setRenderOrder(osg::Camera::POST_RENDER, 100);
 528     guiCamera->setClearMask(0);
 529     inheritanceMask = osg::CullSettings::ALL_VARIABLES;
 530     inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
 531     inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
 532     guiCamera->setInheritanceMask(inheritanceMask);
 533     guiCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 534     guiCamera->setCullingMode(osg::CullSettings::NO_CULLING);
 535     osg::Geode* geode = new osg::Geode;
 536     geode->addDrawable(new SGPuDrawable);
 537     geode->addDrawable(new SGHUDAndPanelDrawable);
 538     guiCamera->addChild(geode);
 539
 540     mCameraView->addChild(mRoot.get());
 541
 542     osg::Switch* sw = new osg::Switch;
 543     sw->setUpdateCallback(new FGScenerySwitchCallback);
 544     sw->addChild(mCameraView.get());
 545
 546     mRealRoot->addChild(sw);
 547     mRealRoot->addChild(FGCreateRedoutNode());
 548     mRealRoot->addChild(guiCamera);
 549 //  sceneView->getState()->setCheckForGLErrors(osg::State::ONCE_PER_ATTRIBUTE);
 550 }
 551
 552
 553 // Update all Visuals (redraws anything graphics related)
 554 void
 555 FGRenderer::update( bool refresh_camera_settings ) {
 556     bool scenery_loaded = fgGetBool("sim/sceneryloaded")
 557                           || fgGetBool("sim/sceneryloaded-override");
 558     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 559     if ( idle_state < 1000 || !scenery_loaded ) {
 560         fgSetDouble("/sim/startup/splash-alpha", 1.0);
 561
 562         // Keep resetting sim time while the sim is initializing
 563         globals->set_sim_time_sec( 0.0 );
 564
 565         // the splash screen is now in the scenegraph
 566         if (!viewer) {
 567             sceneView->update();
 568             sceneView->cull();
 569             sceneView->draw();
 570         }
 571         return;
 572     }
 573
 574     // Fade out the splash screen over the first three seconds.
 575     double sAlpha = SGMiscd::max(0, (2.5 - globals->get_sim_time_sec()) / 2.5);
 576     fgSetDouble("/sim/startup/splash-alpha", sAlpha);
 577
 578     bool skyblend = fgGetBool("/sim/rendering/skyblend");
 579     bool use_point_sprites = fgGetBool("/sim/rendering/point-sprites");
 580     bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
 581     bool distance_attenuation
 582         = fgGetBool("/sim/rendering/distance-attenuation");
 583     // OSGFIXME
 584     SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
 585                                   distance_attenuation );
 586
 587     static const SGPropertyNode *groundlevel_nearplane
 588         = fgGetNode("/sim/current-view/ground-level-nearplane-m");
 589
 590     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 591
 592     // update fog params
 593     double actual_visibility;
 594     if (fgGetBool("/environment/clouds/status")) {
 595         actual_visibility = thesky->get_visibility();
 596     } else {
 597         actual_visibility = fgGetDouble("/environment/visibility-m");
 598     }
 599
 600     // idle_state is now 1000 meaning we've finished all our
 601     // initializations and are running the main loop, so this will
 602     // now work without seg faulting the system.
 603
 604     FGViewer *current__view = globals->get_current_view();
 605     // Force update of center dependent values ...
 606     current__view->set_dirty();
 607
 608     if ( refresh_camera_settings ) {
 609         // update view port
 610         resize( fgGetInt("/sim/startup/xsize"),
 611                 fgGetInt("/sim/startup/ysize") );
 612
 613         SGVec3d position = current__view->getViewPosition();
 614         SGQuatd attitude = current__view->getViewOrientation();
 615         SGVec3d osgPosition = attitude.transform(-position);
 616         if (viewer) {
 617             FGManipulator *manipulator
 618                 = globals->get_renderer()->getManipulator();
 619             manipulator->setPosition(position.osg());
 620             manipulator->setAttitude(attitude.osg());
 621         } else {
 622             mCameraView->setPosition(osgPosition.osg());
 623             mCameraView->setAttitude(inverse(attitude).osg());
 624         }
 625     }
 626     osg::Camera *camera;
 627     if (viewer)
 628         camera = viewer->getCamera();
 629     else
 630         camera = sceneView->getCamera();
 631     if ( skyblend ) {
 632
 633         if ( fgGetBool("/sim/rendering/textures") ) {
 634             SGVec4f clearColor(l->adj_fog_color());
 635             camera->setClearColor(clearColor.osg());
 636         }
 637     } else {
 638         SGVec4f clearColor(l->sky_color());
 639         camera->setClearColor(clearColor.osg());
 640     }
 641
 642     // update fog params if visibility has changed
 643     double visibility_meters = fgGetDouble("/environment/visibility-m");
 644     thesky->set_visibility(visibility_meters);
 645
 646     thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
 647                         ( global_multi_loop * fgGetInt("/sim/speed-up") )
 648                         / (double)fgGetInt("/sim/model-hz") );
 649
 650     // update the sky dome
 651     if ( skyblend ) {
 652
 653         // The sun and moon distances are scaled down versions
 654         // of the actual distance to get both the moon and the sun
 655         // within the range of the far clip plane.
 656         // Moon distance:    384,467 kilometers
 657         // Sun distance: 150,000,000 kilometers
 658
 659         double sun_horiz_eff, moon_horiz_eff;
 660         if (fgGetBool("/sim/rendering/horizon-effect")) {
 661            sun_horiz_eff = 0.67+pow(0.5+cos(l->get_sun_angle())*2/2, 0.33)/3;
 662            moon_horiz_eff = 0.67+pow(0.5+cos(l->get_moon_angle())*2/2, 0.33)/3;
 663         } else {
 664            sun_horiz_eff = moon_horiz_eff = 1.0;
 665         }
 666
 667         static SGSkyState sstate;
 668
 669         sstate.view_pos  = toVec3f(current__view->get_view_pos());
 670         sstate.zero_elev = toVec3f(current__view->get_zero_elev());
 671         sstate.view_up   = current__view->get_world_up();
 672         sstate.lon       = current__view->getLongitude_deg()
 673                             * SGD_DEGREES_TO_RADIANS;
 674         sstate.lat       = current__view->getLatitude_deg()
 675                             * SGD_DEGREES_TO_RADIANS;
 676         sstate.alt       = current__view->getAltitudeASL_ft()
 677                             * SG_FEET_TO_METER;
 678         sstate.spin      = l->get_sun_rotation();
 679         sstate.gst       = globals->get_time_params()->getGst();
 680         sstate.sun_ra    = globals->get_ephem()->getSunRightAscension();
 681         sstate.sun_dec   = globals->get_ephem()->getSunDeclination();
 682         sstate.sun_dist  = 50000.0 * sun_horiz_eff;
 683         sstate.moon_ra   = globals->get_ephem()->getMoonRightAscension();
 684         sstate.moon_dec  = globals->get_ephem()->getMoonDeclination();
 685         sstate.moon_dist = 40000.0 * moon_horiz_eff;
 686         sstate.sun_angle = l->get_sun_angle();
 687
 688
 689         /*
 690          SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
 691          << l->sky_color()[0] << " "
 692          << l->sky_color()[1] << " "
 693          << l->sky_color()[2] << " "
 694          << l->sky_color()[3] );
 695         SG_LOG( SG_GENERAL, SG_BULK, "    fog = "
 696          << l->fog_color()[0] << " "
 697          << l->fog_color()[1] << " "
 698          << l->fog_color()[2] << " "
 699          << l->fog_color()[3] );
 700         SG_LOG( SG_GENERAL, SG_BULK,
 701                 "    sun_angle = " << l->sun_angle
 702          << "    moon_angle = " << l->moon_angle );
 703         */
 704
 705         static SGSkyColor scolor;
 706
 707         scolor.sky_color   = SGVec3f(l->sky_color().data());
 708         scolor.fog_color   = SGVec3f(l->adj_fog_color().data());
 709         scolor.cloud_color = SGVec3f(l->cloud_color().data());
 710         scolor.sun_angle   = l->get_sun_angle();
 711         scolor.moon_angle  = l->get_moon_angle();
 712         scolor.nplanets    = globals->get_ephem()->getNumPlanets();
 713         scolor.nstars      = globals->get_ephem()->getNumStars();
 714         scolor.planet_data = globals->get_ephem()->getPlanets();
 715         scolor.star_data   = globals->get_ephem()->getStars();
 716
 717         thesky->reposition( sstate, delta_time_sec );
 718         thesky->repaint( scolor );
 719
 720         /*
 721         SG_LOG( SG_GENERAL, SG_BULK,
 722                 "thesky->reposition( view_pos = " << view_pos[0] << " "
 723          << view_pos[1] << " " << view_pos[2] );
 724         SG_LOG( SG_GENERAL, SG_BULK,
 725                 "    zero_elev = " << zero_elev[0] << " "
 726          << zero_elev[1] << " " << zero_elev[2]
 727          << " lon = " << cur_fdm_state->get_Longitude()
 728          << " lat = " << cur_fdm_state->get_Latitude() );
 729         SG_LOG( SG_GENERAL, SG_BULK,
 730                 "    sun_rot = " << l->get_sun_rotation
 731          << " gst = " << SGTime::cur_time_params->getGst() );
 732         SG_LOG( SG_GENERAL, SG_BULK,
 733              "    sun ra = " << globals->get_ephem()->getSunRightAscension()
 734           << " sun dec = " << globals->get_ephem()->getSunDeclination()
 735           << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
 736           << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
 737         */
 738
 739         //OSGFIXME
 740 //         shadows->setupShadows(
 741 //           current__view->getLongitude_deg(),
 742 //           current__view->getLatitude_deg(),
 743 //           globals->get_time_params()->getGst(),
 744 //           globals->get_ephem()->getSunRightAscension(),
 745 //           globals->get_ephem()->getSunDeclination(),
 746 //           l->get_sun_angle());
 747
 748     }
 749
 750 //     sgEnviro.setLight(l->adj_fog_color());
 751
 752     // texture parameters
 753     glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
 754
 755     double agl = current__view->getAltitudeASL_ft()*SG_FEET_TO_METER
 756       - current__view->getSGLocation()->get_cur_elev_m();
 757
 758     float scene_nearplane, scene_farplane;
 759     if ( agl > 10.0 ) {
 760         scene_nearplane = 10.0f;
 761         scene_farplane = 120000.0f;
 762     } else {
 763         scene_nearplane = groundlevel_nearplane->getDoubleValue();
 764         scene_farplane = 120000.0f;
 765     }
 766     setNearFar( scene_nearplane, scene_farplane );
 767
 768 //     sgEnviro.startOfFrame(current__view->get_view_pos(),
 769 //         current__view->get_world_up(),
 770 //         current__view->getLongitude_deg(),
 771 //         current__view->getLatitude_deg(),
 772 //         current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
 773 //         delta_time_sec);
 774
 775     // OSGFIXME
 776 //     sgEnviro.drawLightning();
 777
 778 //        double current_view_origin_airspeed_horiz_kt =
 779 //         fgGetDouble("/velocities/airspeed-kt", 0.0)
 780 //                        * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
 781 //                                * SGD_DEGREES_TO_RADIANS);
 782        // TODO:find the real view speed, not the AC one
 783 //     sgEnviro.drawPrecipitation(
 784 //         fgGetDouble("/environment/metar/rain-norm", 0.0),
 785 //         fgGetDouble("/environment/metar/snow-norm", 0.0),
 786 //         fgGetDouble("/environment/metar/hail-norm", 0.0),
 787 //         current__view->getPitch_deg() + current__view->getPitchOffset_deg(),
 788 //         current__view->getRoll_deg() + current__view->getRollOffset_deg(),
 789 //         - current__view->getHeadingOffset_deg(),
 790 //                current_view_origin_airspeed_horiz_kt
 791 //                );
 792
 793     // OSGFIXME
 794 //     if( is_internal )
 795 //         shadows->endOfFrame();
 796
 797     // need to call the update visitor once
 798     if (!viewer) {
 799         mFrameStamp->setReferenceTime(globals->get_sim_time_sec());
 800         mFrameStamp->setFrameNumber(1+mFrameStamp->getFrameNumber());
 801     }
 802     mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
 803     mUpdateVisitor->setViewData(current__view->getViewPosition(),
 804                                 current__view->getViewOrientation());
 805     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
 806     mUpdateVisitor->setLight(direction, l->scene_ambient(),
 807                              l->scene_diffuse(), l->scene_specular(),
 808                              l->adj_fog_color(),
 809                              l->get_sun_angle()*SGD_RADIANS_TO_DEGREES);
 810     mUpdateVisitor->setVisibility(actual_visibility);
 811     bool hotspots = fgGetBool("/sim/panel-hotspots");
 812     if (viewer) {
 813         if (hotspots)
 814             camera->setCullMask(camera->getCullMask()|SG_NODEMASK_PICK_BIT);
 815         else
 816             camera->setCullMask(camera->getCullMask()
 817                                 & ~SG_NODEMASK_PICK_BIT);
 818     } else {
 819         if (hotspots)
 820             sceneView->setCullMask(sceneView->getCullMask()
 821                                    |SG_NODEMASK_PICK_BIT);
 822         else
 823             sceneView->setCullMask(sceneView->getCullMask()
 824                                    &(~SG_NODEMASK_PICK_BIT));
 825         sceneView->update();
 826         sceneView->cull();
 827         sceneView->draw();
 828     }
 829 }
 830
 831
 832
 833 // options.cxx needs to see this for toggle_panel()
 834 // Handle new window size or exposure
 835 void
 836 FGRenderer::resize( int width, int height ) {
 837     int view_h;
 838
 839     if ( (!fgGetBool("/sim/virtual-cockpit"))
 840          && fgPanelVisible() && idle_state == 1000 ) {
 841         view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
 842                              globals->get_current_panel()->getYOffset()) / 768.0);
 843     } else {
 844         view_h = height;
 845     }
 846     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 847     if (viewer)
 848         viewer->getCamera()->getViewport()->setViewport(0, height - view_h,
 849                                                         width, view_h);
 850     else
 851         sceneView->getViewport()->setViewport(0, height - view_h,
 852                                               width, view_h);
 853
 854     static int lastwidth = 0;
 855     static int lastheight = 0;
 856     if (width != lastwidth)
 857         fgSetInt("/sim/startup/xsize", lastwidth = width);
 858     if (height != lastheight)
 859         fgSetInt("/sim/startup/ysize", lastheight = height);
 860
 861     guiInitMouse(width, height);
 862
 863     // for all views
 864     FGViewMgr *viewmgr = globals->get_viewmgr();
 865     if (viewmgr) {
 866       for ( int i = 0; i < viewmgr->size(); ++i ) {
 867         viewmgr->get_view(i)->
 868           set_aspect_ratio((float)view_h / (float)width);
 869       }
 870
 871       setFOV( viewmgr->get_current_view()->get_h_fov(),
 872               viewmgr->get_current_view()->get_v_fov() );
 873     }
 874 }
 875
 876
 877 // These are wrapper functions around ssgSetNearFar() and ssgSetFOV()
 878 // which will post process and rewrite the resulting frustum if we
 879 // want to do asymmetric view frustums.
 880
 881 static void fgHackFrustum() {
 882
 883     // specify a percent of the configured view frustum to actually
 884     // display.  This is a bit of a hack to achieve asymmetric view
 885     // frustums.  For instance, if you want to display two monitors
 886     // side by side, you could specify each with a double fov, a 0.5
 887     // aspect ratio multiplier, and then the left side monitor would
 888     // have a left_pct = 0.0, a right_pct = 0.5, a bottom_pct = 0.0,
 889     // and a top_pct = 1.0.  The right side monitor would have a
 890     // left_pct = 0.5 and a right_pct = 1.0.
 891
 892     static SGPropertyNode *left_pct
 893         = fgGetNode("/sim/current-view/frustum-left-pct");
 894     static SGPropertyNode *right_pct
 895         = fgGetNode("/sim/current-view/frustum-right-pct");
 896     static SGPropertyNode *bottom_pct
 897         = fgGetNode("/sim/current-view/frustum-bottom-pct");
 898     static SGPropertyNode *top_pct
 899         = fgGetNode("/sim/current-view/frustum-top-pct");
 900     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 901     double left, right;
 902     double bottom, top;
 903     double zNear, zFar;
 904     if (viewer)
 905         viewer->getCamera()->getProjectionMatrixAsFrustum(left, right,
 906                                                           bottom, top,
 907                                                           zNear, zFar);
 908     else
 909         sceneView->getProjectionMatrixAsFrustum(left, right, bottom, top,
 910                                                 zNear, zFar);
 911     // cout << " l = " << f->getLeft()
 912     //      << " r = " << f->getRight()
 913     //      << " b = " << f->getBot()
 914     //      << " t = " << f->getTop()
 915     //      << " n = " << f->getNear()
 916     //      << " f = " << f->getFar()
 917     //      << endl;
 918
 919     double width = right - left;
 920     double height = top - bottom;
 921
 922     double l, r, t, b;
 923
 924     if ( left_pct != NULL ) {
 925         l = left + width * left_pct->getDoubleValue();
 926     } else {
 927         l = left;
 928     }
 929
 930     if ( right_pct != NULL ) {
 931         r = left + width * right_pct->getDoubleValue();
 932     } else {
 933         r = right;
 934     }
 935
 936     if ( bottom_pct != NULL ) {
 937         b = bottom + height * bottom_pct->getDoubleValue();
 938     } else {
 939         b = bottom;
 940     }
 941
 942     if ( top_pct != NULL ) {
 943         t = bottom + height * top_pct->getDoubleValue();
 944     } else {
 945         t = top;
 946     }
 947     if (viewer)
 948         viewer->getCamera()->setProjectionMatrixAsFrustum(l, r, b, t,
 949                                                           zNear, zFar);
 950     else
 951         sceneView->setProjectionMatrixAsFrustum(l, r, b, t, zNear, zFar);
 952 }
 953
 954
 955 // we need some static storage space for these values.  However, we
 956 // can't store it in a renderer class object because the functions
 957 // that manipulate these are static.  They are static so they can
 958 // interface to the display callback system.  There's probably a
 959 // better way, there has to be a better way, but I'm not seeing it
 960 // right now.
 961 static float fov_width = 55.0;
 962 static float fov_height = 42.0;
 963 static float fov_near = 1.0;
 964 static float fov_far = 1000.0;
 965
 966
 967 /** FlightGear code should use this routine to set the FOV rather than
 968  *  calling the ssg routine directly
 969  */
 970 void FGRenderer::setFOV( float w, float h ) {
 971     fov_width = w;
 972     fov_height = h;
 973     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 974     if (viewer)
 975         viewer->getCamera()->setProjectionMatrixAsPerspective(fov_height,
 976                                                               fov_width/fov_height,
 977                                                               fov_near, fov_far);
 978     else
 979         sceneView->setProjectionMatrixAsPerspective(fov_height,
 980                                                     fov_width/fov_height,
 981                                                     fov_near, fov_far);
 982     // fully specify the view frustum before hacking it (so we don't
 983     // accumulate hacked effects
 984     fgHackFrustum();
 985 //     sgEnviro.setFOV( w, h );
 986 }
 987
 988
 989 /** FlightGear code should use this routine to set the Near/Far clip
 990  *  planes rather than calling the ssg routine directly
 991  */
 992 void FGRenderer::setNearFar( float n, float f ) {
 993 // OSGFIXME: we have currently too much z-buffer fights
 994 n = 0.1;
 995     fov_near = n;
 996     fov_far = f;
 997     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 998     if (viewer)
 999         viewer->getCamera()->setProjectionMatrixAsPerspective(fov_height,
1000                                                               fov_width/fov_height,
1001                                                               fov_near, fov_far);
1002     else
1003         sceneView->setProjectionMatrixAsPerspective(fov_height,
1004                                                     fov_width/fov_height,
1005                                                     fov_near, fov_far);
1006
1007     // fully specify the view frustum before hacking it (so we don't
1008     // accumulate hacked effects
1009     fgHackFrustum();
1010 }
1011
1012 bool
1013 FGRenderer::pick( unsigned x, unsigned y,
1014                   std::vector<SGSceneryPick>& pickList )
1015 {
1016   osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
1017   // wipe out the return ...
1018   pickList.resize(0);
1019
1020   osg::Node* sceneData = globals->get_scenery()->get_scene_graph();
1021   if (!sceneData)
1022     return false;
1023   osg::Viewport* viewport = 0;
1024   osg::Matrix projection;
1025   osg::Matrix modelview;
1026
1027   if (sceneView.valid()) {
1028     viewport = sceneView->getViewport();
1029     if (!viewport)
1030       return false;
1031     // don't know why, but the update has partly happened somehow,
1032     // so update the scenery part of the viewer
1033     FGViewer *current_view = globals->get_current_view();
1034     // Force update of center dependent values ...
1035     current_view->set_dirty();
1036     SGVec3d position = current_view->getViewPosition();
1037     SGQuatd attitude = current_view->getViewOrientation();
1038     SGVec3d osgPosition = attitude.transform(-position);
1039     mCameraView->setPosition(osgPosition.osg());
1040     mCameraView->setAttitude(inverse(attitude).osg());
1041
1042     osg::Matrix projection(sceneView->getProjectionMatrix());
1043     osg::Matrix modelview(sceneView->getViewMatrix());
1044
1045     osg::NodePathList nodePath = sceneData->getParentalNodePaths();
1046     // modify the view matrix so that it accounts for this nodePath's
1047     // accumulated transform
1048     if (!nodePath.empty())
1049       modelview.preMult(computeLocalToWorld(nodePath.front()));
1050   } else if (viewer) {
1051     // I don't think the Viewer case needs to update the camera
1052     // matrices before picking. The user has clicked on the old scene
1053     // -- that which is displayed in the front buffer -- so we need to
1054     // use the camera state in effect for that view of the scene.
1055     osg::Camera *camera = viewer->getCamera();
1056     viewport = camera->getViewport();
1057     projection = camera->getProjectionMatrix();
1058     modelview = camera->getViewMatrix();
1059     // Accumulated transforms? Don't think that applies for the
1060     // Viewer's camera.
1061   } else {                      // we can get called early ...
1062     return false;
1063   }
1064   // swap the y values ...
1065   y = viewport->height() - y;
1066   // set up the pick visitor
1067   osgUtil::PickVisitor pickVisitor(viewport, projection, modelview, x, y);
1068   sceneData->accept(pickVisitor);
1069   if (!pickVisitor.hits())
1070     return false;
1071
1072   // collect all interaction callbacks on the pick ray.
1073   // They get stored in the pickCallbacks list where they are sorted back
1074   // to front and croasest to finest wrt the scenery node they are attached to
1075   osgUtil::PickVisitor::LineSegmentHitListMap::const_iterator mi;
1076   for (mi = pickVisitor.getSegHitList().begin();
1077        mi != pickVisitor.getSegHitList().end();
1078        ++mi) {
1079     osgUtil::IntersectVisitor::HitList::const_iterator hi;
1080     for (hi = mi->second.begin(); hi != mi->second.end(); ++hi) {
1081       // ok, go back the nodes and ask for intersection callbacks,
1082       // execute them in top down order
1083       const osg::NodePath& np = hi->getNodePath();
1084       osg::NodePath::const_reverse_iterator npi;
1085       for (npi = np.rbegin(); npi != np.rend(); ++npi) {
1086         SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
1087         if (!ud)
1088           continue;
1089         for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
1090           SGPickCallback* pickCallback = ud->getPickCallback(i);
1091           if (!pickCallback)
1092             continue;
1093           SGSceneryPick sceneryPick;
1094           /// note that this is done totally in doubles instead of
1095           /// just using getWorldIntersectionPoint
1096           osg::Vec3d localPt = hi->getLocalIntersectPoint();
1097           sceneryPick.info.local = SGVec3d(localPt);
1098           if (hi->getMatrix())
1099             sceneryPick.info.wgs84 = SGVec3d(localPt*(*hi->getMatrix()));
1100           else
1101             sceneryPick.info.wgs84 = SGVec3d(localPt);
1102           sceneryPick.callback = pickCallback;
1103           pickList.push_back(sceneryPick);
1104         }
1105       }
1106     }
1107   }
1108
1109   return !pickList.empty();
1110 }
1111
1112 bool fgDumpSceneGraphToFile(const char* filename)
1113 {
1114     return osgDB::writeNodeFile(*mRealRoot.get(), filename);
1115 }
1116
1117 // end of renderer.cxx
1118