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 #include <osgUtil/LineSegmentIntersector>
  58
  59 #include <osg/io_utils>
  60 #include <osgDB/WriteFile>
  61 #include <osgDB/ReadFile>
  62 #include <sstream>
  63
  64 #include <simgear/math/SGMath.hxx>
  65 #include <simgear/screen/extensions.hxx>
  66 #include <simgear/scene/material/matlib.hxx>
  67 #include <simgear/scene/model/animation.hxx>
  68 #include <simgear/scene/model/model.hxx>
  69 #include <simgear/scene/model/modellib.hxx>
  70 #include <simgear/scene/model/placement.hxx>
  71 #include <simgear/scene/util/SGUpdateVisitor.hxx>
  72 #include <simgear/scene/tgdb/pt_lights.hxx>
  73 #include <simgear/props/props.hxx>
  74 #include <simgear/timing/sg_time.hxx>
  75 #include <simgear/ephemeris/ephemeris.hxx>
  76 #include <simgear/math/sg_random.h>
  77 #ifdef FG_JPEG_SERVER
  78 #include <simgear/screen/jpgfactory.hxx>
  79 #endif
  80
  81 #include <simgear/environment/visual_enviro.hxx>
  82
  83 #include <Scenery/tileentry.hxx>
  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
 100 #include "splash.hxx"
 101 #include "renderer.hxx"
 102 #include "main.hxx"
 103
 104 class SGPuDrawable : public osg::Drawable {
 105 public:
 106   SGPuDrawable()
 107   {
 108     // Dynamic stuff, do not store geometry
 109     setUseDisplayList(false);
 110
 111     osg::StateSet* stateSet = getOrCreateStateSet();
 112     stateSet->setRenderBinDetails(1001, "RenderBin");
 113     // speed optimization?
 114     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 115     // We can do translucent menus, so why not. :-)
 116     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 117     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 118     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 119
 120     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 121
 122     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 123     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 124   }
 125   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 126   { drawImplementation(*renderInfo.getState()); }
 127   void drawImplementation(osg::State& state) const
 128   {
 129     if (!fgOSIsMainContext(state.getGraphicsContext()))
 130       return;
 131
 132     state.pushStateSet(getStateSet());
 133     state.apply();
 134     state.setActiveTextureUnit(0);
 135     state.setClientActiveTextureUnit(0);
 136     state.disableAllVertexArrays();
 137
 138     glPushAttrib(GL_ALL_ATTRIB_BITS);
 139     glPushClientAttrib(~0u);
 140
 141     puDisplay();
 142
 143     glPopClientAttrib();
 144     glPopAttrib();
 145
 146     state.popStateSet();
 147     state.dirtyAllModes();
 148     state.dirtyAllAttributes();
 149     state.dirtyAllVertexArrays();
 150   }
 151
 152   virtual osg::Object* cloneType() const { return new SGPuDrawable; }
 153   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGPuDrawable; }
 154
 155 private:
 156 };
 157
 158 class SGHUDAndPanelDrawable : public osg::Drawable {
 159 public:
 160   SGHUDAndPanelDrawable()
 161   {
 162     // Dynamic stuff, do not store geometry
 163     setUseDisplayList(false);
 164
 165     osg::StateSet* stateSet = getOrCreateStateSet();
 166     stateSet->setRenderBinDetails(1000, "RenderBin");
 167
 168     // speed optimization?
 169     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 170     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 171     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 172     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 173     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 174
 175     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 176   }
 177   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 178   { drawImplementation(*renderInfo.getState()); }
 179   void drawImplementation(osg::State& state) const
 180   {
 181 //     std::cout << state.getGraphicsContext() << std::endl;
 182     if (!fgOSIsMainContext(state.getGraphicsContext()))
 183       return;
 184
 185     state.pushStateSet(getStateSet());
 186     state.apply();
 187     state.setActiveTextureUnit(0);
 188     state.setClientActiveTextureUnit(0);
 189     state.disableAllVertexArrays();
 190
 191     glPushAttrib(GL_ALL_ATTRIB_BITS);
 192     glPushClientAttrib(~0u);
 193
 194     fgCockpitUpdate(&state);
 195
 196     FGInstrumentMgr *instr = static_cast<FGInstrumentMgr*>(globals->get_subsystem("instrumentation"));
 197     HUD *hud = static_cast<HUD*>(instr->get_subsystem("hud"));
 198     hud->draw(state);
 199
 200     // update the panel subsystem
 201     if ( globals->get_current_panel() != NULL )
 202         globals->get_current_panel()->update(state);
 203     // We don't need a state here - can be safely removed when we can pick
 204     // correctly
 205     fgUpdate3DPanels();
 206
 207     glPopClientAttrib();
 208     glPopAttrib();
 209
 210     state.popStateSet();
 211     state.dirtyAllModes();
 212     state.dirtyAllAttributes();
 213     state.dirtyAllVertexArrays();
 214   }
 215
 216   virtual osg::Object* cloneType() const { return new SGHUDAndPanelDrawable; }
 217   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGHUDAndPanelDrawable; }
 218
 219 private:
 220 };
 221
 222 class FGLightSourceUpdateCallback : public osg::NodeCallback {
 223 public:
 224   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 225   {
 226     assert(dynamic_cast<osg::LightSource*>(node));
 227     osg::LightSource* lightSource = static_cast<osg::LightSource*>(node);
 228     osg::Light* light = lightSource->getLight();
 229
 230     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 231     light->setAmbient(l->scene_ambient().osg());
 232     light->setDiffuse(l->scene_diffuse().osg());
 233     light->setSpecular(l->scene_specular().osg());
 234     SGVec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
 235     light->setPosition(position.osg());
 236     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
 237     light->setDirection(direction.osg());
 238     light->setSpotExponent(0);
 239     light->setSpotCutoff(180);
 240     light->setConstantAttenuation(1);
 241     light->setLinearAttenuation(0);
 242     light->setQuadraticAttenuation(0);
 243
 244     traverse(node, nv);
 245   }
 246 };
 247
 248 class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
 249 public:
 250   FGWireFrameModeUpdateCallback() :
 251     mWireframe(fgGetNode("/sim/rendering/wireframe"))
 252   { }
 253   virtual void operator()(osg::StateAttribute* stateAttribute,
 254                           osg::NodeVisitor*)
 255   {
 256     assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
 257     osg::PolygonMode* polygonMode;
 258     polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
 259
 260     if (mWireframe->getBoolValue())
 261       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 262                            osg::PolygonMode::LINE);
 263     else
 264       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 265                            osg::PolygonMode::FILL);
 266   }
 267 private:
 268   SGSharedPtr<SGPropertyNode> mWireframe;
 269 };
 270
 271 class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
 272 public:
 273   FGLightModelUpdateCallback() :
 274     mHighlights(fgGetNode("/sim/rendering/specular-highlight"))
 275   { }
 276   virtual void operator()(osg::StateAttribute* stateAttribute,
 277                           osg::NodeVisitor*)
 278   {
 279     assert(dynamic_cast<osg::LightModel*>(stateAttribute));
 280     osg::LightModel* lightModel;
 281     lightModel = static_cast<osg::LightModel*>(stateAttribute);
 282
 283 #if 0
 284     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 285     lightModel->setAmbientIntensity(l->scene_ambient().osg());
 286 #else
 287     lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
 288 #endif
 289     lightModel->setTwoSided(true);
 290     lightModel->setLocalViewer(false);
 291
 292     if (mHighlights->getBoolValue()) {
 293       lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
 294     } else {
 295       lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
 296     }
 297   }
 298 private:
 299   SGSharedPtr<SGPropertyNode> mHighlights;
 300 };
 301
 302 class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
 303 public:
 304   FGFogEnableUpdateCallback() :
 305     mFogEnabled(fgGetNode("/sim/rendering/fog"))
 306   { }
 307   virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
 308   {
 309     if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
 310       stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 311     } else {
 312       stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
 313     }
 314   }
 315 private:
 316   SGSharedPtr<SGPropertyNode> mFogEnabled;
 317 };
 318
 319 class FGFogUpdateCallback : public osg::StateAttribute::Callback {
 320 public:
 321   virtual void operator () (osg::StateAttribute* sa, osg::NodeVisitor* nv)
 322   {
 323     assert(dynamic_cast<SGUpdateVisitor*>(nv));
 324     assert(dynamic_cast<osg::Fog*>(sa));
 325     SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
 326     osg::Fog* fog = static_cast<osg::Fog*>(sa);
 327     fog->setMode(osg::Fog::EXP2);
 328     fog->setColor(updateVisitor->getFogColor().osg());
 329     fog->setDensity(updateVisitor->getFogExp2Density());
 330   }
 331 };
 332
 333 // update callback for the switch node guarding that splash
 334 class FGScenerySwitchCallback : public osg::NodeCallback {
 335 public:
 336   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 337   {
 338     assert(dynamic_cast<osg::Switch*>(node));
 339     osg::Switch* sw = static_cast<osg::Switch*>(node);
 340
 341     double t = globals->get_sim_time_sec();
 342     bool enabled = 0 < t;
 343     sw->setValue(0, enabled);
 344     if (!enabled)
 345       return;
 346     traverse(node, nv);
 347   }
 348 };
 349
 350 // Sky structures
 351 SGSky *thesky;
 352
 353 osg::ref_ptr<osgUtil::SceneView> sceneView = new osgUtil::SceneView;  // This SceneView is used by class FGJpegHttpd ( jpg-httpd.cxx )
 354 static osg::ref_ptr<osg::FrameStamp> mFrameStamp = new osg::FrameStamp;
 355 static osg::ref_ptr<SGUpdateVisitor> mUpdateVisitor= new SGUpdateVisitor;
 356
 357 static osg::ref_ptr<osg::Group> mRealRoot = new osg::Group;
 358
 359 static osg::ref_ptr<osg::Group> mRoot = new osg::Group;
 360
 361 static osg::ref_ptr<osg::CameraView> mCameraView = new osg::CameraView;
 362 static osg::ref_ptr<osg::Camera> mBackGroundCamera = new osg::Camera;
 363
 364 FGRenderer::FGRenderer()
 365 {
 366 #ifdef FG_JPEG_SERVER
 367    jpgRenderFrame = FGRenderer::update;
 368 #endif
 369 #ifdef ENABLE_OSGVIEWER
 370    manipulator = new FGManipulator;
 371 #endif
 372 }
 373
 374 FGRenderer::~FGRenderer()
 375 {
 376 #ifdef FG_JPEG_SERVER
 377    jpgRenderFrame = NULL;
 378 #endif
 379 }
 380
 381 // Initialize various GL/view parameters
 382 // XXX This should be called "preinit" or something, as it initializes
 383 // critical parts of the scene graph in addition to the splash screen.
 384 void
 385 FGRenderer::splashinit( void ) {
 386     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 387     if (viewer) {
 388         sceneView = 0;
 389         mRealRoot = dynamic_cast<osg::Group*>(viewer->getSceneData());
 390         mRealRoot->addChild(fgCreateSplashNode());
 391         osgViewer::Scene* scene = viewer->getScene();
 392         mFrameStamp = viewer->getFrameStamp();
 393         // Scene doesn't seem to pass the frame stamp to the update
 394         // visitor automatically.
 395         mUpdateVisitor->setFrameStamp(mFrameStamp.get());
 396         scene->setUpdateVisitor(mUpdateVisitor.get());
 397     } else {
 398         // Add the splash screen node
 399         mRealRoot->addChild(fgCreateSplashNode());
 400         sceneView->setSceneData(mRealRoot.get());
 401         sceneView->setDefaults(osgUtil::SceneView::COMPILE_GLOBJECTS_AT_INIT);
 402         sceneView->setFrameStamp(mFrameStamp.get());
 403         sceneView->setUpdateVisitor(mUpdateVisitor.get());
 404     }
 405 }
 406
 407 void
 408 FGRenderer::init( void ) {
 409     // The viewer can call this before the graphics context is current
 410     // in the main thread; indeed, in a multithreaded setup it might
 411     // never be current in the main thread.
 412     fgMakeCurrent();
 413     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 414     osg::initNotifyLevel();
 415
 416     // The number of polygon-offset "units" to place between layers.  In
 417     // principle, one is supposed to be enough.  In practice, I find that
 418     // my hardware/driver requires many more.
 419     osg::PolygonOffset::setUnitsMultiplier(1);
 420     osg::PolygonOffset::setFactorMultiplier(1);
 421
 422     // Go full screen if requested ...
 423     if ( fgGetBool("/sim/startup/fullscreen") )
 424         fgOSFullScreen();
 425
 426     if ( (!strcmp(fgGetString("/sim/rendering/fog"), "disabled")) ||
 427          (!fgGetBool("/sim/rendering/shading"))) {
 428         // if fastest fog requested, or if flat shading force fastest
 429         glHint ( GL_FOG_HINT, GL_FASTEST );
 430     } else if ( !strcmp(fgGetString("/sim/rendering/fog"), "nicest") ) {
 431         glHint ( GL_FOG_HINT, GL_DONT_CARE );
 432     }
 433
 434     glHint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
 435     glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
 436     glHint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
 437
 438     if (viewer) {
 439       viewer->getCamera()
 440             ->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 441     } else {
 442         sceneView->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 443         sceneView->getCamera()->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 444     }
 445
 446
 447     osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
 448
 449     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
 450
 451     stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
 452     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 453
 454     stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
 455     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
 456     stateSet->setAttribute(new osg::BlendFunc);
 457     stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
 458
 459     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 460
 461     // this will be set below
 462     stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
 463
 464     osg::Material* material = new osg::Material;
 465     stateSet->setAttribute(material);
 466
 467     stateSet->setTextureAttribute(0, new osg::TexEnv);
 468     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 469
 470
 471 //     stateSet->setAttribute(new osg::CullFace(osg::CullFace::BACK));
 472 //     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::ON);
 473
 474     // this is the topmost scenegraph node for osg
 475     mBackGroundCamera->addChild(thesky->getPreRoot());
 476     mBackGroundCamera->setClearMask(0);
 477
 478     GLbitfield inheritanceMask = osg::CullSettings::ALL_VARIABLES;
 479     inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
 480     inheritanceMask &= ~osg::CullSettings::NEAR_FAR_RATIO;
 481     inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
 482     mBackGroundCamera->setInheritanceMask(inheritanceMask);
 483     mBackGroundCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 484     mBackGroundCamera->setCullingMode(osg::CullSettings::NO_CULLING);
 485     mBackGroundCamera->setRenderOrder(osg::Camera::NESTED_RENDER);
 486
 487     stateSet = mBackGroundCamera->getOrCreateStateSet();
 488     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 489
 490     osg::Group* sceneGroup = new osg::Group;
 491     sceneGroup->addChild(globals->get_scenery()->get_scene_graph());
 492     sceneGroup->addChild(thesky->getCloudRoot());
 493
 494     stateSet = sceneGroup->getOrCreateStateSet();
 495     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 496     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 497
 498     // need to update the light on every frame
 499     osg::LightSource* lightSource = new osg::LightSource;
 500     lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
 501     // relative because of CameraView being just a clever transform node
 502     lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
 503     lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
 504     mRoot->addChild(lightSource);
 505
 506     lightSource->addChild(mBackGroundCamera.get());
 507     lightSource->addChild(sceneGroup);
 508
 509
 510     stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
 511     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 512     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
 513     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
 514     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 515
 516     // enable disable specular highlights.
 517     // is the place where we might plug in an other fragment shader ...
 518     osg::LightModel* lightModel = new osg::LightModel;
 519     lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
 520     stateSet->setAttribute(lightModel);
 521
 522     // switch to enable wireframe
 523     osg::PolygonMode* polygonMode = new osg::PolygonMode;
 524     polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
 525     stateSet->setAttributeAndModes(polygonMode);
 526
 527     // scene fog handling
 528     osg::Fog* fog = new osg::Fog;
 529     fog->setUpdateCallback(new FGFogUpdateCallback);
 530     stateSet->setAttributeAndModes(fog);
 531     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
 532
 533     // plug in the GUI
 534     osg::Camera* guiCamera = new osg::Camera;
 535     guiCamera->setRenderOrder(osg::Camera::POST_RENDER, 100);
 536     guiCamera->setClearMask(0);
 537     inheritanceMask = osg::CullSettings::ALL_VARIABLES;
 538     inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
 539     inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
 540     guiCamera->setInheritanceMask(inheritanceMask);
 541     guiCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 542     guiCamera->setCullingMode(osg::CullSettings::NO_CULLING);
 543     osg::Geode* geode = new osg::Geode;
 544     geode->addDrawable(new SGPuDrawable);
 545     geode->addDrawable(new SGHUDAndPanelDrawable);
 546     guiCamera->addChild(geode);
 547
 548     mCameraView->addChild(mRoot.get());
 549
 550     osg::Switch* sw = new osg::Switch;
 551     sw->setUpdateCallback(new FGScenerySwitchCallback);
 552     sw->addChild(mCameraView.get());
 553
 554     mRealRoot->addChild(sw);
 555     mRealRoot->addChild(FGCreateRedoutNode());
 556     mRealRoot->addChild(guiCamera);
 557 //  sceneView->getState()->setCheckForGLErrors(osg::State::ONCE_PER_ATTRIBUTE);
 558 }
 559
 560
 561 // Update all Visuals (redraws anything graphics related)
 562 void
 563 FGRenderer::update( bool refresh_camera_settings ) {
 564     bool scenery_loaded = fgGetBool("sim/sceneryloaded")
 565                           || fgGetBool("sim/sceneryloaded-override");
 566     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 567     if ( idle_state < 1000 || !scenery_loaded ) {
 568         fgSetDouble("/sim/startup/splash-alpha", 1.0);
 569
 570         // Keep resetting sim time while the sim is initializing
 571         globals->set_sim_time_sec( 0.0 );
 572
 573         // the splash screen is now in the scenegraph
 574         if (!viewer) {
 575             sceneView->update();
 576             sceneView->cull();
 577             sceneView->draw();
 578         }
 579         return;
 580     }
 581
 582     // Fade out the splash screen over the first three seconds.
 583     double sAlpha = SGMiscd::max(0, (2.5 - globals->get_sim_time_sec()) / 2.5);
 584     fgSetDouble("/sim/startup/splash-alpha", sAlpha);
 585
 586     bool skyblend = fgGetBool("/sim/rendering/skyblend");
 587     bool use_point_sprites = fgGetBool("/sim/rendering/point-sprites");
 588     bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
 589     bool distance_attenuation
 590         = fgGetBool("/sim/rendering/distance-attenuation");
 591     // OSGFIXME
 592     SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
 593                                   distance_attenuation );
 594
 595     static const SGPropertyNode *groundlevel_nearplane
 596         = fgGetNode("/sim/current-view/ground-level-nearplane-m");
 597
 598     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 599
 600     // update fog params
 601     double actual_visibility;
 602     if (fgGetBool("/environment/clouds/status")) {
 603         actual_visibility = thesky->get_visibility();
 604     } else {
 605         actual_visibility = fgGetDouble("/environment/visibility-m");
 606     }
 607
 608     // idle_state is now 1000 meaning we've finished all our
 609     // initializations and are running the main loop, so this will
 610     // now work without seg faulting the system.
 611
 612     FGViewer *current__view = globals->get_current_view();
 613     // Force update of center dependent values ...
 614     current__view->set_dirty();
 615
 616     if ( refresh_camera_settings ) {
 617         // update view port
 618         resize( fgGetInt("/sim/startup/xsize"),
 619                 fgGetInt("/sim/startup/ysize") );
 620
 621         SGVec3d position = current__view->getViewPosition();
 622         SGQuatd attitude = current__view->getViewOrientation();
 623         SGVec3d osgPosition = attitude.transform(-position);
 624         if (viewer) {
 625             FGManipulator *manipulator
 626                 = globals->get_renderer()->getManipulator();
 627             manipulator->setPosition(position.osg());
 628             manipulator->setAttitude(attitude.osg());
 629         } else {
 630             mCameraView->setPosition(osgPosition.osg());
 631             mCameraView->setAttitude(inverse(attitude).osg());
 632         }
 633     }
 634     osg::Camera *camera;
 635     if (viewer)
 636         camera = viewer->getCamera();
 637     else
 638         camera = sceneView->getCamera();
 639     if ( skyblend ) {
 640
 641         if ( fgGetBool("/sim/rendering/textures") ) {
 642             SGVec4f clearColor(l->adj_fog_color());
 643             camera->setClearColor(clearColor.osg());
 644         }
 645     } else {
 646         SGVec4f clearColor(l->sky_color());
 647         camera->setClearColor(clearColor.osg());
 648     }
 649
 650     // update fog params if visibility has changed
 651     double visibility_meters = fgGetDouble("/environment/visibility-m");
 652     thesky->set_visibility(visibility_meters);
 653
 654     thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
 655                         ( global_multi_loop * fgGetInt("/sim/speed-up") )
 656                         / (double)fgGetInt("/sim/model-hz") );
 657
 658     // update the sky dome
 659     if ( skyblend ) {
 660
 661         // The sun and moon distances are scaled down versions
 662         // of the actual distance to get both the moon and the sun
 663         // within the range of the far clip plane.
 664         // Moon distance:    384,467 kilometers
 665         // Sun distance: 150,000,000 kilometers
 666
 667         double sun_horiz_eff, moon_horiz_eff;
 668         if (fgGetBool("/sim/rendering/horizon-effect")) {
 669            sun_horiz_eff = 0.67+pow(0.5+cos(l->get_sun_angle())*2/2, 0.33)/3;
 670            moon_horiz_eff = 0.67+pow(0.5+cos(l->get_moon_angle())*2/2, 0.33)/3;
 671         } else {
 672            sun_horiz_eff = moon_horiz_eff = 1.0;
 673         }
 674
 675         static SGSkyState sstate;
 676
 677         sstate.view_pos  = toVec3f(current__view->get_view_pos());
 678         sstate.zero_elev = toVec3f(current__view->get_zero_elev());
 679         sstate.view_up   = current__view->get_world_up();
 680         sstate.lon       = current__view->getLongitude_deg()
 681                             * SGD_DEGREES_TO_RADIANS;
 682         sstate.lat       = current__view->getLatitude_deg()
 683                             * SGD_DEGREES_TO_RADIANS;
 684         sstate.alt       = current__view->getAltitudeASL_ft()
 685                             * SG_FEET_TO_METER;
 686         sstate.spin      = l->get_sun_rotation();
 687         sstate.gst       = globals->get_time_params()->getGst();
 688         sstate.sun_ra    = globals->get_ephem()->getSunRightAscension();
 689         sstate.sun_dec   = globals->get_ephem()->getSunDeclination();
 690         sstate.sun_dist  = 50000.0 * sun_horiz_eff;
 691         sstate.moon_ra   = globals->get_ephem()->getMoonRightAscension();
 692         sstate.moon_dec  = globals->get_ephem()->getMoonDeclination();
 693         sstate.moon_dist = 40000.0 * moon_horiz_eff;
 694         sstate.sun_angle = l->get_sun_angle();
 695
 696
 697         /*
 698          SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
 699          << l->sky_color()[0] << " "
 700          << l->sky_color()[1] << " "
 701          << l->sky_color()[2] << " "
 702          << l->sky_color()[3] );
 703         SG_LOG( SG_GENERAL, SG_BULK, "    fog = "
 704          << l->fog_color()[0] << " "
 705          << l->fog_color()[1] << " "
 706          << l->fog_color()[2] << " "
 707          << l->fog_color()[3] );
 708         SG_LOG( SG_GENERAL, SG_BULK,
 709                 "    sun_angle = " << l->sun_angle
 710          << "    moon_angle = " << l->moon_angle );
 711         */
 712
 713         static SGSkyColor scolor;
 714
 715         scolor.sky_color   = SGVec3f(l->sky_color().data());
 716         scolor.fog_color   = SGVec3f(l->adj_fog_color().data());
 717         scolor.cloud_color = SGVec3f(l->cloud_color().data());
 718         scolor.sun_angle   = l->get_sun_angle();
 719         scolor.moon_angle  = l->get_moon_angle();
 720         scolor.nplanets    = globals->get_ephem()->getNumPlanets();
 721         scolor.nstars      = globals->get_ephem()->getNumStars();
 722         scolor.planet_data = globals->get_ephem()->getPlanets();
 723         scolor.star_data   = globals->get_ephem()->getStars();
 724
 725         thesky->reposition( sstate, delta_time_sec );
 726         thesky->repaint( scolor );
 727
 728         /*
 729         SG_LOG( SG_GENERAL, SG_BULK,
 730                 "thesky->reposition( view_pos = " << view_pos[0] << " "
 731          << view_pos[1] << " " << view_pos[2] );
 732         SG_LOG( SG_GENERAL, SG_BULK,
 733                 "    zero_elev = " << zero_elev[0] << " "
 734          << zero_elev[1] << " " << zero_elev[2]
 735          << " lon = " << cur_fdm_state->get_Longitude()
 736          << " lat = " << cur_fdm_state->get_Latitude() );
 737         SG_LOG( SG_GENERAL, SG_BULK,
 738                 "    sun_rot = " << l->get_sun_rotation
 739          << " gst = " << SGTime::cur_time_params->getGst() );
 740         SG_LOG( SG_GENERAL, SG_BULK,
 741              "    sun ra = " << globals->get_ephem()->getSunRightAscension()
 742           << " sun dec = " << globals->get_ephem()->getSunDeclination()
 743           << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
 744           << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
 745         */
 746
 747         //OSGFIXME
 748 //         shadows->setupShadows(
 749 //           current__view->getLongitude_deg(),
 750 //           current__view->getLatitude_deg(),
 751 //           globals->get_time_params()->getGst(),
 752 //           globals->get_ephem()->getSunRightAscension(),
 753 //           globals->get_ephem()->getSunDeclination(),
 754 //           l->get_sun_angle());
 755
 756     }
 757
 758 //     sgEnviro.setLight(l->adj_fog_color());
 759
 760     // texture parameters
 761     glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
 762
 763     double agl = current__view->getAltitudeASL_ft()*SG_FEET_TO_METER
 764       - current__view->getSGLocation()->get_cur_elev_m();
 765
 766     float scene_nearplane, scene_farplane;
 767     if ( agl > 10.0 ) {
 768         scene_nearplane = 10.0f;
 769         scene_farplane = 120000.0f;
 770     } else {
 771         scene_nearplane = groundlevel_nearplane->getDoubleValue();
 772         scene_farplane = 120000.0f;
 773     }
 774     setNearFar( scene_nearplane, scene_farplane );
 775
 776 //     sgEnviro.startOfFrame(current__view->get_view_pos(),
 777 //         current__view->get_world_up(),
 778 //         current__view->getLongitude_deg(),
 779 //         current__view->getLatitude_deg(),
 780 //         current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
 781 //         delta_time_sec);
 782
 783     // OSGFIXME
 784 //     sgEnviro.drawLightning();
 785
 786 //        double current_view_origin_airspeed_horiz_kt =
 787 //         fgGetDouble("/velocities/airspeed-kt", 0.0)
 788 //                        * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
 789 //                                * SGD_DEGREES_TO_RADIANS);
 790        // TODO:find the real view speed, not the AC one
 791 //     sgEnviro.drawPrecipitation(
 792 //         fgGetDouble("/environment/metar/rain-norm", 0.0),
 793 //         fgGetDouble("/environment/metar/snow-norm", 0.0),
 794 //         fgGetDouble("/environment/metar/hail-norm", 0.0),
 795 //         current__view->getPitch_deg() + current__view->getPitchOffset_deg(),
 796 //         current__view->getRoll_deg() + current__view->getRollOffset_deg(),
 797 //         - current__view->getHeadingOffset_deg(),
 798 //                current_view_origin_airspeed_horiz_kt
 799 //                );
 800
 801     // OSGFIXME
 802 //     if( is_internal )
 803 //         shadows->endOfFrame();
 804
 805     // need to call the update visitor once
 806     if (!viewer) {
 807         mFrameStamp->setReferenceTime(globals->get_sim_time_sec());
 808         mFrameStamp->setSimulationTime(globals->get_sim_time_sec());
 809         mFrameStamp->setFrameNumber(1+mFrameStamp->getFrameNumber());
 810     }
 811     mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
 812     mUpdateVisitor->setViewData(current__view->getViewPosition(),
 813                                 current__view->getViewOrientation());
 814     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
 815     mUpdateVisitor->setLight(direction, l->scene_ambient(),
 816                              l->scene_diffuse(), l->scene_specular(),
 817                              l->adj_fog_color(),
 818                              l->get_sun_angle()*SGD_RADIANS_TO_DEGREES);
 819     mUpdateVisitor->setVisibility(actual_visibility);
 820     bool hotspots = fgGetBool("/sim/panel-hotspots");
 821     if (viewer) {
 822         if (hotspots)
 823             camera->setCullMask(camera->getCullMask()|SG_NODEMASK_PICK_BIT);
 824         else
 825             camera->setCullMask(camera->getCullMask()
 826                                 & ~SG_NODEMASK_PICK_BIT);
 827     } else {
 828         if (hotspots)
 829             sceneView->setCullMask(sceneView->getCullMask()
 830                                    |SG_NODEMASK_PICK_BIT);
 831         else
 832             sceneView->setCullMask(sceneView->getCullMask()
 833                                    &(~SG_NODEMASK_PICK_BIT));
 834         sceneView->update();
 835         sceneView->cull();
 836         sceneView->draw();
 837     }
 838 }
 839
 840
 841
 842 // options.cxx needs to see this for toggle_panel()
 843 // Handle new window size or exposure
 844 void
 845 FGRenderer::resize( int width, int height ) {
 846     int view_h;
 847
 848     if ( (!fgGetBool("/sim/virtual-cockpit"))
 849          && fgPanelVisible() && idle_state == 1000 ) {
 850         view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
 851                              globals->get_current_panel()->getYOffset()) / 768.0);
 852     } else {
 853         view_h = height;
 854     }
 855     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 856     if (viewer)
 857         ;
 858   //       viewer->getCamera()->getViewport()->setViewport(0, height - view_h,
 859 //                                                         width, view_h);
 860     else
 861         sceneView->getViewport()->setViewport(0, height - view_h,
 862                                               width, view_h);
 863
 864     static int lastwidth = 0;
 865     static int lastheight = 0;
 866     if (width != lastwidth)
 867         fgSetInt("/sim/startup/xsize", lastwidth = width);
 868     if (height != lastheight)
 869         fgSetInt("/sim/startup/ysize", lastheight = height);
 870
 871     guiInitMouse(width, height);
 872
 873     // for all views
 874     FGViewMgr *viewmgr = globals->get_viewmgr();
 875     if (viewmgr) {
 876       for ( int i = 0; i < viewmgr->size(); ++i ) {
 877         viewmgr->get_view(i)->
 878           set_aspect_ratio((float)view_h / (float)width);
 879       }
 880
 881       setFOV( viewmgr->get_current_view()->get_h_fov(),
 882               viewmgr->get_current_view()->get_v_fov() );
 883     }
 884 }
 885
 886
 887 // we need some static storage space for these values.  However, we
 888 // can't store it in a renderer class object because the functions
 889 // that manipulate these are static.  They are static so they can
 890 // interface to the display callback system.  There's probably a
 891 // better way, there has to be a better way, but I'm not seeing it
 892 // right now.
 893 static float fov_width = 55.0;
 894 static float fov_height = 42.0;
 895 static float fov_near = 1.0;
 896 static float fov_far = 1000.0;
 897
 898
 899 /** FlightGear code should use this routine to set the FOV rather than
 900  *  calling the ssg routine directly
 901  */
 902 void FGRenderer::setFOV( float w, float h ) {
 903     fov_width = w;
 904     fov_height = h;
 905     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 906     if (viewer)
 907         viewer->getCamera()->setProjectionMatrixAsPerspective(fov_height, 4.0/3.0, fov_near, fov_far);
 908     else
 909         sceneView->setProjectionMatrixAsPerspective(fov_height,
 910                                                     fov_width/fov_height,
 911                                                     fov_near, fov_far);
 912 }
 913
 914
 915 /** FlightGear code should use this routine to set the Near/Far clip
 916  *  planes rather than calling the ssg routine directly
 917  */
 918 void FGRenderer::setNearFar( float n, float f ) {
 919 // OSGFIXME: we have currently too much z-buffer fights
 920 n = 0.1;
 921     fov_near = n;
 922     fov_far = f;
 923     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 924     if (viewer)
 925         viewer->getCamera()->setProjectionMatrixAsPerspective(fov_height, 4.0/3.0, fov_near, fov_far);
 926     else
 927         sceneView->setProjectionMatrixAsPerspective(fov_height,
 928                                                     fov_width/fov_height,
 929                                                     fov_near, fov_far);
 930
 931 }
 932
 933 bool
 934 FGRenderer::pick( unsigned x, unsigned y,
 935                   std::vector<SGSceneryPick>& pickList,
 936                   const osgGA::GUIEventAdapter* ea )
 937 {
 938   osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 939   // wipe out the return ...
 940   pickList.resize(0);
 941
 942   if (sceneView.valid()) {
 943     osg::Node* sceneData = globals->get_scenery()->get_scene_graph();
 944     if (!sceneData)
 945       return false;
 946
 947     osg::Viewport* viewport = sceneView->getViewport();
 948     if (!viewport)
 949       return false;
 950     // don't know why, but the update has partly happened somehow,
 951     // so update the scenery part of the viewer
 952     FGViewer *current_view = globals->get_current_view();
 953     // Force update of center dependent values ...
 954     current_view->set_dirty();
 955     SGVec3d position = current_view->getViewPosition();
 956     SGQuatd attitude = current_view->getViewOrientation();
 957     SGVec3d osgPosition = attitude.transform(-position);
 958     mCameraView->setPosition(osgPosition.osg());
 959     mCameraView->setAttitude(inverse(attitude).osg());
 960
 961     osg::Matrix projection(sceneView->getProjectionMatrix());
 962     osg::Matrix modelview(sceneView->getViewMatrix());
 963
 964     osg::NodePathList nodePath = sceneData->getParentalNodePaths();
 965     // modify the view matrix so that it accounts for this nodePath's
 966     // accumulated transform
 967     if (!nodePath.empty())
 968       modelview.preMult(computeLocalToWorld(nodePath.front()));
 969
 970     // swap the y values ...
 971     y = viewport->height() - y;
 972     // set up the pick visitor
 973     osgUtil::PickVisitor pickVisitor(viewport, projection, modelview, x, y);
 974     sceneData->accept(pickVisitor);
 975     if (!pickVisitor.hits())
 976       return false;
 977
 978     // collect all interaction callbacks on the pick ray.
 979     // They get stored in the pickCallbacks list where they are sorted back
 980     // to front and croasest to finest wrt the scenery node they are attached to
 981     osgUtil::PickVisitor::LineSegmentHitListMap::const_iterator mi;
 982     for (mi = pickVisitor.getSegHitList().begin();
 983          mi != pickVisitor.getSegHitList().end();
 984          ++mi) {
 985       osgUtil::IntersectVisitor::HitList::const_iterator hi;
 986       for (hi = mi->second.begin(); hi != mi->second.end(); ++hi) {
 987         // ok, go back the nodes and ask for intersection callbacks,
 988         // execute them in top down order
 989         const osg::NodePath& np = hi->getNodePath();
 990         osg::NodePath::const_reverse_iterator npi;
 991         for (npi = np.rbegin(); npi != np.rend(); ++npi) {
 992           SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
 993           if (!ud)
 994             continue;
 995           for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
 996             SGPickCallback* pickCallback = ud->getPickCallback(i);
 997             if (!pickCallback)
 998               continue;
 999             SGSceneryPick sceneryPick;
1000             /// note that this is done totally in doubles instead of
1001             /// just using getWorldIntersectionPoint
1002             osg::Vec3d localPt = hi->getLocalIntersectPoint();
1003             sceneryPick.info.local = SGVec3d(localPt);
1004             if (hi->getMatrix())
1005               sceneryPick.info.wgs84 = SGVec3d(localPt*(*hi->getMatrix()));
1006             else
1007               sceneryPick.info.wgs84 = SGVec3d(localPt);
1008             sceneryPick.callback = pickCallback;
1009             pickList.push_back(sceneryPick);
1010           }
1011         }
1012       }
1013     }
1014
1015     return !pickList.empty();
1016
1017   } else if (viewer) {
1018
1019     // just compute intersections in the viewers method ...
1020     typedef osgUtil::LineSegmentIntersector::Intersections Intersections;
1021     Intersections intersections;
1022     viewer->computeIntersections(ea->getX(), ea->getY(), intersections);
1023
1024     Intersections::iterator hit;
1025     for (hit = intersections.begin(); hit != intersections.end(); ++hit) {
1026       const osg::NodePath& np = hit->nodePath;
1027       osg::NodePath::const_reverse_iterator npi;
1028       for (npi = np.rbegin(); npi != np.rend(); ++npi) {
1029         SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
1030         if (!ud)
1031           continue;
1032         for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
1033           SGPickCallback* pickCallback = ud->getPickCallback(i);
1034           if (!pickCallback)
1035             continue;
1036           SGSceneryPick sceneryPick;
1037           sceneryPick.info.local = SGVec3d(hit->getLocalIntersectPoint());
1038           sceneryPick.info.wgs84 = SGVec3d(hit->getWorldIntersectPoint());
1039           sceneryPick.callback = pickCallback;
1040           pickList.push_back(sceneryPick);
1041         }
1042       }
1043     }
1044
1045     return !pickList.empty();
1046   } else {                      // we can get called early ...
1047     return false;
1048   }
1049 }
1050
1051 bool fgDumpSceneGraphToFile(const char* filename)
1052 {
1053     return osgDB::writeNodeFile(*mRealRoot.get(), filename);
1054 }
1055
1056 // end of renderer.cxx
1057