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/CameraNode>
  39 #include <osg/CameraView>
  40 #include <osg/CullFace>
  41 #include <osg/Depth>
  42 #include <osg/Fog>
  43 #include <osg/Group>
  44 #include <osg/LightModel>
  45 #include <osg/NodeCallback>
  46 #include <osg/Notify>
  47 #include <osg/MatrixTransform>
  48 #include <osg/Multisample>
  49 #include <osg/Point>
  50 #include <osg/PolygonMode>
  51 #include <osg/ShadeModel>
  52 #include <osg/TexEnv>
  53 #include <osg/TexEnvCombine>
  54 #include <osg/TexGen>
  55 #include <osg/TexMat>
  56 #include <osg/ColorMatrix>
  57
  58 #include <osgUtil/SceneView>
  59 #include <osgUtil/UpdateVisitor>
  60
  61 #include <osg/io_utils>
  62 #include <osgDB/WriteFile>
  63 #include <osgDB/ReadFile>
  64 #include <sstream>
  65
  66 #include <simgear/math/SGMath.hxx>
  67 #include <simgear/screen/extensions.hxx>
  68 #include <simgear/scene/material/matlib.hxx>
  69 #include <simgear/scene/model/animation.hxx>
  70 #include <simgear/scene/model/model.hxx>
  71 #include <simgear/scene/model/modellib.hxx>
  72 #include <simgear/scene/model/placement.hxx>
  73 #include <simgear/scene/util/SGUpdateVisitor.hxx>
  74 #include <simgear/scene/tgdb/pt_lights.hxx>
  75 #include <simgear/props/props.hxx>
  76 #include <simgear/timing/sg_time.hxx>
  77 #include <simgear/ephemeris/ephemeris.hxx>
  78 #include <simgear/math/sg_random.h>
  79 #ifdef FG_JPEG_SERVER
  80 #include <simgear/screen/jpgfactory.hxx>
  81 #endif
  82
  83 #include <simgear/environment/visual_enviro.hxx>
  84
  85 #include <Scenery/tileentry.hxx>
  86 #include <Time/light.hxx>
  87 #include <Time/light.hxx>
  88 #include <Aircraft/aircraft.hxx>
  89 #include <Cockpit/panel.hxx>
  90 #include <Cockpit/cockpit.hxx>
  91 #include <Cockpit/hud.hxx>
  92 #include <Model/panelnode.hxx>
  93 #include <Model/modelmgr.hxx>
  94 #include <Model/acmodel.hxx>
  95 #include <Scenery/scenery.hxx>
  96 #include <Scenery/tilemgr.hxx>
  97 #include <ATC/ATCdisplay.hxx>
  98 #include <GUI/new_gui.hxx>
  99 #include <Instrumentation/instrument_mgr.hxx>
 100 #include <Instrumentation/HUD/HUD.hxx>
 101
 102 #include "splash.hxx"
 103 #include "renderer.hxx"
 104 #include "main.hxx"
 105
 106 class SGPuDrawable : public osg::Drawable {
 107 public:
 108   SGPuDrawable()
 109   {
 110     // Dynamic stuff, do not store geometry
 111     setUseDisplayList(false);
 112
 113     osg::StateSet* stateSet = getOrCreateStateSet();
 114     // speed optimization?
 115     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 116     // We can do translucent menus, so why not. :-)
 117     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 118     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 119     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 120
 121     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 122     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 123   }
 124   virtual void drawImplementation(osg::State& state) const
 125   {
 126     state.pushStateSet(getStateSet());
 127     puDisplay();
 128     state.popStateSet();
 129   }
 130
 131   virtual osg::Object* cloneType() const { return new SGPuDrawable; }
 132   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGPuDrawable; }
 133
 134 private:
 135 };
 136
 137
 138 class FGSunLightUpdateCallback : public osg::StateAttribute::Callback {
 139 public:
 140   virtual void operator()(osg::StateAttribute* stateAttribute,
 141                           osg::NodeVisitor*)
 142   {
 143     assert(dynamic_cast<osg::Light*>(stateAttribute));
 144     osg::Light* light = static_cast<osg::Light*>(stateAttribute);
 145
 146     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 147     light->setAmbient(l->scene_ambient().osg());
 148     light->setDiffuse(l->scene_diffuse().osg());
 149     light->setSpecular(l->scene_specular().osg());
 150     SGVec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
 151     light->setPosition(position.osg());
 152     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
 153     light->setDirection(direction.osg());
 154     light->setSpotExponent(0);
 155     light->setSpotCutoff(180);
 156     light->setConstantAttenuation(1);
 157     light->setLinearAttenuation(0);
 158     light->setQuadraticAttenuation(0);
 159   }
 160 };
 161
 162 class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
 163 public:
 164   FGWireFrameModeUpdateCallback() :
 165     mWireframe(fgGetNode("/sim/rendering/wireframe"))
 166   { }
 167   virtual void operator()(osg::StateAttribute* stateAttribute,
 168                           osg::NodeVisitor*)
 169   {
 170     assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
 171     osg::PolygonMode* polygonMode;
 172     polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
 173
 174     if (mWireframe->getBoolValue())
 175       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 176                            osg::PolygonMode::LINE);
 177     else
 178       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 179                            osg::PolygonMode::FILL);
 180   }
 181 private:
 182   SGSharedPtr<SGPropertyNode> mWireframe;
 183 };
 184
 185 class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
 186 public:
 187   FGLightModelUpdateCallback() :
 188     mHighlights(fgGetNode("/sim/rendering/specular-highlight"))
 189   { }
 190   virtual void operator()(osg::StateAttribute* stateAttribute,
 191                           osg::NodeVisitor*)
 192   {
 193     assert(dynamic_cast<osg::LightModel*>(stateAttribute));
 194     osg::LightModel* lightModel;
 195     lightModel = static_cast<osg::LightModel*>(stateAttribute);
 196
 197 #if 0
 198     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 199     lightModel->setAmbientIntensity(l->scene_ambient().osg());
 200 #else
 201     lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
 202 #endif
 203     lightModel->setTwoSided(true);
 204     lightModel->setLocalViewer(false);
 205
 206     if (mHighlights->getBoolValue()) {
 207       lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
 208     } else {
 209       lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
 210     }
 211   }
 212 private:
 213   SGSharedPtr<SGPropertyNode> mHighlights;
 214 };
 215
 216 class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
 217 public:
 218   FGFogEnableUpdateCallback() :
 219     mFogEnabled(fgGetNode("/sim/rendering/fog"))
 220   { }
 221   virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
 222   {
 223     if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
 224       stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 225     } else {
 226       stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
 227     }
 228   }
 229 private:
 230   SGSharedPtr<SGPropertyNode> mFogEnabled;
 231 };
 232
 233 // fog constants.  I'm a little nervous about putting actual code out
 234 // here but it seems to work (?)
 235 static const double m_log01 = -log( 0.01 );
 236 static const double sqrt_m_log01 = sqrt( m_log01 );
 237 static GLfloat fog_exp_density;
 238 static GLfloat fog_exp2_density;
 239 static GLfloat rwy_exp2_punch_through;
 240 static GLfloat taxi_exp2_punch_through;
 241 static GLfloat ground_exp2_punch_through;
 242
 243 // Sky structures
 244 SGSky *thesky;
 245
 246 static osg::ref_ptr<osgUtil::SceneView> sceneView = new osgUtil::SceneView;
 247 static osg::ref_ptr<osg::FrameStamp> mFrameStamp = new osg::FrameStamp;
 248
 249 static osg::ref_ptr<osg::Group> mRoot = new osg::Group;
 250
 251 static osg::ref_ptr<osg::CameraView> mCameraView = new osg::CameraView;
 252 static osg::ref_ptr<osg::CameraNode> mBackGroundCamera = new osg::CameraNode;
 253 static osg::ref_ptr<osg::CameraNode> mSceneCamera = new osg::CameraNode;
 254
 255 static osg::ref_ptr<osg::Fog> mFog = new osg::Fog;
 256 static osg::ref_ptr<osg::Fog> mRunwayLightingFog = new osg::Fog;
 257 static osg::ref_ptr<osg::Fog> mTaxiLightingFog = new osg::Fog;
 258 static osg::ref_ptr<osg::Fog> mGroundLightingFog = new osg::Fog;
 259
 260 FGRenderer::FGRenderer()
 261 {
 262 #ifdef FG_JPEG_SERVER
 263    jpgRenderFrame = FGRenderer::update;
 264 #endif
 265 }
 266
 267 FGRenderer::~FGRenderer()
 268 {
 269 #ifdef FG_JPEG_SERVER
 270    jpgRenderFrame = NULL;
 271 #endif
 272 }
 273
 274 // Initialize various GL/view parameters
 275 void
 276 FGRenderer::init( void ) {
 277
 278     osg::initNotifyLevel();
 279
 280     // Go full screen if requested ...
 281     if ( fgGetBool("/sim/startup/fullscreen") )
 282         fgOSFullScreen();
 283
 284     if ( (!strcmp(fgGetString("/sim/rendering/fog"), "disabled")) ||
 285          (!fgGetBool("/sim/rendering/shading"))) {
 286         // if fastest fog requested, or if flat shading force fastest
 287         glHint ( GL_FOG_HINT, GL_FASTEST );
 288     } else if ( !strcmp(fgGetString("/sim/rendering/fog"), "nicest") ) {
 289         glHint ( GL_FOG_HINT, GL_DONT_CARE );
 290     }
 291
 292     glHint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
 293     glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
 294     glHint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
 295
 296     sceneView->setDefaults(osgUtil::SceneView::COMPILE_GLOBJECTS_AT_INIT);
 297
 298     mFog->setMode(osg::Fog::EXP2);
 299     mRunwayLightingFog->setMode(osg::Fog::EXP2);
 300     mTaxiLightingFog->setMode(osg::Fog::EXP2);
 301     mGroundLightingFog->setMode(osg::Fog::EXP2);
 302
 303     sceneView->setFrameStamp(mFrameStamp.get());
 304
 305     sceneView->setUpdateVisitor(new SGUpdateVisitor);
 306
 307     sceneView->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 308
 309     sceneView->getCamera()->setViewMatrix(osg::Matrix(0, 0,-1, 0,
 310                                                       1, 0, 0, 0,
 311                                                       0,-1, 0, 0,
 312                                                       0, 0, 0, 1));
 313     sceneView->getCamera()->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 314     sceneView->getCamera()->setClearMask(GL_COLOR_BUFFER_BIT);
 315
 316     osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
 317     stateSet->setRenderingHint(osg::StateSet::OPAQUE_BIN);
 318
 319     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
 320
 321     stateSet->setAttribute(new osg::Depth(osg::Depth::LEQUAL));
 322     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 323
 324     stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
 325     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
 326     stateSet->setAttribute(new osg::BlendFunc);
 327     stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
 328
 329     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 330
 331     // this will be set below
 332     stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
 333
 334     osg::Material* material = new osg::Material;
 335     stateSet->setAttribute(material);
 336
 337     stateSet->setTextureAttribute(0, new osg::TexEnv);
 338     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 339
 340
 341 //     stateSet->setAttribute(new osg::CullFace(osg::CullFace::BACK));
 342 //     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::ON);
 343
 344
 345     // need to update the light on every frame
 346     osg::Light* sunLight = new osg::Light;
 347     sunLight->setLightNum(0);
 348     sunLight->setUpdateCallback(new FGSunLightUpdateCallback);
 349     stateSet->setAttributeAndModes(sunLight, osg::StateAttribute::ON);
 350     osg::LightModel* lightModel = new osg::LightModel;
 351     lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
 352     stateSet->setAttributeAndModes(lightModel, osg::StateAttribute::ON);
 353
 354     // this is the topmost scenegraph node for osg
 355     mBackGroundCamera->addChild(thesky->getPreRoot());
 356     mBackGroundCamera->setClearMask(0);
 357
 358     GLbitfield inheritanceMask = osg::CullSettings::ALL_VARIABLES;
 359     inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
 360     inheritanceMask &= ~osg::CullSettings::NEAR_FAR_RATIO;
 361     inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
 362     mBackGroundCamera->setInheritanceMask(inheritanceMask);
 363     mBackGroundCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 364     mBackGroundCamera->setCullingMode(osg::CullSettings::NO_CULLING);
 365
 366     mBackGroundCamera->getOrCreateStateSet()->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 367
 368     mRoot->addChild(mBackGroundCamera.get());
 369
 370     mSceneCamera->setClearMask(GL_DEPTH_BUFFER_BIT);
 371     inheritanceMask = osg::CullSettings::ALL_VARIABLES;
 372     inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
 373     inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
 374     mSceneCamera->setInheritanceMask(inheritanceMask);
 375     mSceneCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 376     mSceneCamera->setCullingMode(osg::CullSettings::DEFAULT_CULLING);
 377
 378
 379     stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
 380     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 381     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
 382     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
 383     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 384
 385     // switch to enable wireframe
 386     osg::PolygonMode* polygonMode = new osg::PolygonMode;
 387     polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
 388     stateSet->setAttributeAndModes(polygonMode);
 389
 390     // scene fog handling
 391     stateSet->setAttributeAndModes(mFog.get());
 392     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
 393
 394     mRoot->addChild(mSceneCamera.get());
 395
 396     // plug in the GUI
 397     osg::CameraNode* guiCamera = new osg::CameraNode;
 398     guiCamera->setRenderOrder(osg::CameraNode::POST_RENDER);
 399     guiCamera->setClearMask(0);
 400     inheritanceMask = osg::CullSettings::ALL_VARIABLES;
 401     inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
 402     inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
 403     guiCamera->setInheritanceMask(inheritanceMask);
 404     guiCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 405     guiCamera->setCullingMode(osg::CullSettings::NO_CULLING);
 406     mRoot->addChild(guiCamera);
 407     osg::Geode* geode = new osg::Geode;
 408     geode->addDrawable(new SGPuDrawable);
 409     guiCamera->addChild(geode);
 410
 411     mSceneCamera->addChild(globals->get_scenery()->get_scene_graph());
 412
 413     stateSet = mSceneCamera->getOrCreateStateSet();
 414     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 415     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 416
 417     // this one contains all lights, here we set the light states we did
 418     // in the plib case with plain OpenGL
 419     osg::Group* lightGroup = new osg::Group;
 420     mSceneCamera->addChild(lightGroup);
 421     lightGroup->addChild(globals->get_scenery()->get_gnd_lights_root());
 422     lightGroup->addChild(globals->get_scenery()->get_vasi_lights_root());
 423     lightGroup->addChild(globals->get_scenery()->get_rwy_lights_root());
 424     lightGroup->addChild(globals->get_scenery()->get_taxi_lights_root());
 425
 426     stateSet = globals->get_scenery()->get_gnd_lights_root()->getOrCreateStateSet();
 427     stateSet->setAttributeAndModes(mFog.get());
 428     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
 429     stateSet = globals->get_scenery()->get_vasi_lights_root()->getOrCreateStateSet();
 430     stateSet->setAttributeAndModes(mRunwayLightingFog.get());
 431     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
 432     stateSet = globals->get_scenery()->get_rwy_lights_root()->getOrCreateStateSet();
 433     stateSet->setAttributeAndModes(mRunwayLightingFog.get());
 434     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
 435     stateSet = globals->get_scenery()->get_taxi_lights_root()->getOrCreateStateSet();
 436     stateSet->setAttributeAndModes(mTaxiLightingFog.get());
 437     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
 438
 439     mCameraView->addChild(mRoot.get());
 440     sceneView->setSceneData(mCameraView.get());
 441
 442     mSceneCamera->addChild(thesky->getCloudRoot());
 443
 444 //  sceneView->getState()->setCheckForGLErrors(osg::State::ONCE_PER_ATTRIBUTE);
 445 }
 446
 447
 448 // Update all Visuals (redraws anything graphics related)
 449 void
 450 FGRenderer::update( bool refresh_camera_settings ) {
 451     bool scenery_loaded = fgGetBool("sim/sceneryloaded")
 452                           || fgGetBool("sim/sceneryloaded-override");
 453
 454     if ( idle_state < 1000 || !scenery_loaded ) {
 455         // still initializing, draw the splash screen
 456         fgSplashUpdate(1.0);
 457
 458         // Keep resetting sim time while the sim is initializing
 459         globals->set_sim_time_sec( 0.0 );
 460         return;
 461     }
 462
 463     bool skyblend = fgGetBool("/sim/rendering/skyblend");
 464     bool use_point_sprites = fgGetBool("/sim/rendering/point-sprites");
 465     bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
 466     bool distance_attenuation
 467         = fgGetBool("/sim/rendering/distance-attenuation");
 468     // OSGFIXME
 469     SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
 470                                   distance_attenuation );
 471
 472     static const SGPropertyNode *groundlevel_nearplane
 473         = fgGetNode("/sim/current-view/ground-level-nearplane-m");
 474
 475     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 476
 477     // update fog params
 478     double actual_visibility;
 479     if (fgGetBool("/environment/clouds/status")) {
 480         actual_visibility = thesky->get_visibility();
 481     } else {
 482         actual_visibility = fgGetDouble("/environment/visibility-m");
 483     }
 484
 485     static double last_visibility = -9999;
 486     if ( actual_visibility != last_visibility ) {
 487         last_visibility = actual_visibility;
 488
 489         fog_exp_density = m_log01 / actual_visibility;
 490         fog_exp2_density = sqrt_m_log01 / actual_visibility;
 491         ground_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 1.5);
 492         if ( actual_visibility < 8000 ) {
 493             rwy_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 2.5);
 494             taxi_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 1.5);
 495         } else {
 496             rwy_exp2_punch_through = sqrt_m_log01 / ( 8000 * 2.5 );
 497             taxi_exp2_punch_through = sqrt_m_log01 / ( 8000 * 1.5 );
 498         }
 499         mFog->setDensity(fog_exp2_density);
 500         mRunwayLightingFog->setDensity(rwy_exp2_punch_through);
 501         mTaxiLightingFog->setDensity(taxi_exp2_punch_through);
 502         mGroundLightingFog->setDensity(ground_exp2_punch_through);
 503     }
 504
 505     // idle_state is now 1000 meaning we've finished all our
 506     // initializations and are running the main loop, so this will
 507     // now work without seg faulting the system.
 508
 509     FGViewer *current__view = globals->get_current_view();
 510     // Force update of center dependent values ...
 511     current__view->set_dirty();
 512
 513     if ( refresh_camera_settings ) {
 514         // update view port
 515         resize( fgGetInt("/sim/startup/xsize"),
 516                 fgGetInt("/sim/startup/ysize") );
 517
 518         SGVec3d center = globals->get_scenery()->get_center();
 519         SGVec3d position = current__view->getViewPosition();
 520         SGQuatd attitude = current__view->getViewOrientation();
 521         SGVec3d osgPosition = attitude.transform(center - position);
 522         mCameraView->setPosition(osgPosition.osg());
 523         mCameraView->setAttitude(inverse(attitude).osg());
 524     }
 525
 526     if ( skyblend ) {
 527         if ( fgGetBool("/sim/rendering/textures") ) {
 528             SGVec4f clearColor(l->adj_fog_color());
 529             sceneView->getCamera()->setClearColor(clearColor.osg());
 530         }
 531     } else {
 532         SGVec4f clearColor(l->sky_color());
 533         sceneView->getCamera()->setClearColor(clearColor.osg());
 534     }
 535
 536     // update fog params if visibility has changed
 537     double visibility_meters = fgGetDouble("/environment/visibility-m");
 538     thesky->set_visibility(visibility_meters);
 539
 540     thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
 541                         ( global_multi_loop * fgGetInt("/sim/speed-up") )
 542                         / (double)fgGetInt("/sim/model-hz") );
 543
 544     // update the sky dome
 545     if ( skyblend ) {
 546
 547         // The sun and moon distances are scaled down versions
 548         // of the actual distance to get both the moon and the sun
 549         // within the range of the far clip plane.
 550         // Moon distance:    384,467 kilometers
 551         // Sun distance: 150,000,000 kilometers
 552
 553         double sun_horiz_eff, moon_horiz_eff;
 554         if (fgGetBool("/sim/rendering/horizon-effect")) {
 555            sun_horiz_eff = 0.67+pow(0.5+cos(l->get_sun_angle())*2/2, 0.33)/3;
 556            moon_horiz_eff = 0.67+pow(0.5+cos(l->get_moon_angle())*2/2, 0.33)/3;
 557         } else {
 558            sun_horiz_eff = moon_horiz_eff = 1.0;
 559         }
 560
 561         static SGSkyState sstate;
 562
 563         sstate.view_pos  = current__view->get_view_pos();
 564         sstate.zero_elev = current__view->get_zero_elev();
 565         sstate.view_up   = current__view->get_world_up();
 566         sstate.lon       = current__view->getLongitude_deg()
 567                             * SGD_DEGREES_TO_RADIANS;
 568         sstate.lat       = current__view->getLatitude_deg()
 569                             * SGD_DEGREES_TO_RADIANS;
 570         sstate.alt       = current__view->getAltitudeASL_ft()
 571                             * SG_FEET_TO_METER;
 572         sstate.spin      = l->get_sun_rotation();
 573         sstate.gst       = globals->get_time_params()->getGst();
 574         sstate.sun_ra    = globals->get_ephem()->getSunRightAscension();
 575         sstate.sun_dec   = globals->get_ephem()->getSunDeclination();
 576         sstate.sun_dist  = 50000.0 * sun_horiz_eff;
 577         sstate.moon_ra   = globals->get_ephem()->getMoonRightAscension();
 578         sstate.moon_dec  = globals->get_ephem()->getMoonDeclination();
 579         sstate.moon_dist = 40000.0 * moon_horiz_eff;
 580         sstate.sun_angle = l->get_sun_angle();
 581
 582
 583         /*
 584          SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
 585          << l->sky_color()[0] << " "
 586          << l->sky_color()[1] << " "
 587          << l->sky_color()[2] << " "
 588          << l->sky_color()[3] );
 589         SG_LOG( SG_GENERAL, SG_BULK, "    fog = "
 590          << l->fog_color()[0] << " "
 591          << l->fog_color()[1] << " "
 592          << l->fog_color()[2] << " "
 593          << l->fog_color()[3] );
 594         SG_LOG( SG_GENERAL, SG_BULK,
 595                 "    sun_angle = " << l->sun_angle
 596          << "    moon_angle = " << l->moon_angle );
 597         */
 598
 599         static SGSkyColor scolor;
 600
 601         scolor.sky_color   = SGVec3f(l->sky_color().data());
 602         scolor.fog_color   = SGVec3f(l->adj_fog_color().data());
 603         scolor.cloud_color = SGVec3f(l->cloud_color().data());
 604         scolor.sun_angle   = l->get_sun_angle();
 605         scolor.moon_angle  = l->get_moon_angle();
 606         scolor.nplanets    = globals->get_ephem()->getNumPlanets();
 607         scolor.nstars      = globals->get_ephem()->getNumStars();
 608         scolor.planet_data = globals->get_ephem()->getPlanets();
 609         scolor.star_data   = globals->get_ephem()->getStars();
 610
 611         thesky->reposition( sstate, delta_time_sec );
 612         thesky->repaint( scolor );
 613
 614         /*
 615         SG_LOG( SG_GENERAL, SG_BULK,
 616                 "thesky->reposition( view_pos = " << view_pos[0] << " "
 617          << view_pos[1] << " " << view_pos[2] );
 618         SG_LOG( SG_GENERAL, SG_BULK,
 619                 "    zero_elev = " << zero_elev[0] << " "
 620          << zero_elev[1] << " " << zero_elev[2]
 621          << " lon = " << cur_fdm_state->get_Longitude()
 622          << " lat = " << cur_fdm_state->get_Latitude() );
 623         SG_LOG( SG_GENERAL, SG_BULK,
 624                 "    sun_rot = " << l->get_sun_rotation
 625          << " gst = " << SGTime::cur_time_params->getGst() );
 626         SG_LOG( SG_GENERAL, SG_BULK,
 627              "    sun ra = " << globals->get_ephem()->getSunRightAscension()
 628           << " sun dec = " << globals->get_ephem()->getSunDeclination()
 629           << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
 630           << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
 631         */
 632
 633         //OSGFIXME
 634 //         shadows->setupShadows(
 635 //           current__view->getLongitude_deg(),
 636 //           current__view->getLatitude_deg(),
 637 //           globals->get_time_params()->getGst(),
 638 //           globals->get_ephem()->getSunRightAscension(),
 639 //           globals->get_ephem()->getSunDeclination(),
 640 //           l->get_sun_angle());
 641
 642     }
 643
 644     if ( strcmp(fgGetString("/sim/rendering/fog"), "disabled") ) {
 645         SGVec4f color(l->adj_fog_color());
 646         mFog->setColor(color.osg());
 647         mRunwayLightingFog->setColor(color.osg());
 648         mTaxiLightingFog->setColor(color.osg());
 649         mGroundLightingFog->setColor(color.osg());
 650     }
 651
 652
 653 //     sgEnviro.setLight(l->adj_fog_color());
 654
 655     // texture parameters
 656     glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
 657
 658     double agl = current__view->getAltitudeASL_ft()*SG_FEET_TO_METER
 659       - current__view->getSGLocation()->get_cur_elev_m();
 660
 661     float scene_nearplane, scene_farplane;
 662     if ( agl > 10.0 ) {
 663         scene_nearplane = 10.0f;
 664         scene_farplane = 120000.0f;
 665     } else {
 666         scene_nearplane = groundlevel_nearplane->getDoubleValue();
 667         scene_farplane = 120000.0f;
 668     }
 669
 670     setNearFar( scene_nearplane, scene_farplane );
 671
 672 //     sgEnviro.startOfFrame(current__view->get_view_pos(),
 673 //         current__view->get_world_up(),
 674 //         current__view->getLongitude_deg(),
 675 //         current__view->getLatitude_deg(),
 676 //         current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
 677 //         delta_time_sec);
 678
 679     // OSGFIXME
 680 //     sgEnviro.drawLightning();
 681
 682 //        double current_view_origin_airspeed_horiz_kt =
 683 //         fgGetDouble("/velocities/airspeed-kt", 0.0)
 684 //                        * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
 685 //                                * SGD_DEGREES_TO_RADIANS);
 686        // TODO:find the real view speed, not the AC one
 687 //     sgEnviro.drawPrecipitation(
 688 //         fgGetDouble("/environment/metar/rain-norm", 0.0),
 689 //         fgGetDouble("/environment/metar/snow-norm", 0.0),
 690 //         fgGetDouble("/environment/metar/hail-norm", 0.0),
 691 //         current__view->getPitch_deg() + current__view->getPitchOffset_deg(),
 692 //         current__view->getRoll_deg() + current__view->getRollOffset_deg(),
 693 //         - current__view->getHeadingOffset_deg(),
 694 //                current_view_origin_airspeed_horiz_kt
 695 //                );
 696
 697     // OSGFIXME
 698 //     if( is_internal )
 699 //         shadows->endOfFrame();
 700
 701     // need to call the update visitor once
 702     globals->get_aircraft_model()->select( true );
 703     FGTileMgr::set_tile_filter( true );
 704     mFrameStamp->setReferenceTime(globals->get_sim_time_sec());
 705     mFrameStamp->setFrameNumber(1+mFrameStamp->getFrameNumber());
 706     mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
 707     sceneView->update();
 708     sceneView->cull();
 709     sceneView->draw();
 710
 711     glPushAttrib(GL_ALL_ATTRIB_BITS);
 712     glPushClientAttrib(~0u);
 713
 714     // display HUD && Panel
 715     glDisable( GL_FOG );
 716     glDisable( GL_DEPTH_TEST );
 717
 718     fgCockpitUpdate(sceneView->getState());
 719
 720     FGInstrumentMgr *instr = static_cast<FGInstrumentMgr*>(globals->get_subsystem("instrumentation"));
 721     HUD *hud = static_cast<HUD*>(instr->get_subsystem("hud"));
 722     hud->draw(*sceneView->getState());
 723
 724     // update the panel subsystem
 725     if ( globals->get_current_panel() != NULL )
 726         globals->get_current_panel()->update(*sceneView->getState());
 727     // We don't need a state here - can be safely removed when we can pick
 728     // correctly
 729     fgUpdate3DPanels();
 730
 731     if((fgGetBool("/sim/atc/enabled"))
 732        || (fgGetBool("/sim/ai-traffic/enabled")))
 733       globals->get_ATC_display()->update(delta_time_sec,
 734                                          *sceneView->getState());
 735
 736     // We can do translucent menus, so why not. :-)
 737     glDisable( GL_TEXTURE_2D ) ;
 738     glDisable( GL_CULL_FACE ) ;
 739     glEnable( GL_BLEND ) ;
 740     glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
 741
 742     // Fade out the splash screen over the first three seconds.
 743     double t = globals->get_sim_time_sec();
 744     if (t <= 2.5)
 745         fgSplashUpdate((2.5 - t) / 2.5);
 746
 747     glPopClientAttrib();
 748     glPopAttrib();
 749 }
 750
 751
 752
 753 // options.cxx needs to see this for toggle_panel()
 754 // Handle new window size or exposure
 755 void
 756 FGRenderer::resize( int width, int height ) {
 757     int view_h;
 758
 759     if ( (!fgGetBool("/sim/virtual-cockpit"))
 760          && fgPanelVisible() && idle_state == 1000 ) {
 761         view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
 762                              globals->get_current_panel()->getYOffset()) / 768.0);
 763     } else {
 764         view_h = height;
 765     }
 766
 767     sceneView->getViewport()->setViewport(0, height - view_h, width, view_h);
 768
 769     static int lastwidth = 0;
 770     static int lastheight = 0;
 771     if (width != lastwidth)
 772         fgSetInt("/sim/startup/xsize", lastwidth = width);
 773     if (height != lastheight)
 774         fgSetInt("/sim/startup/ysize", lastheight = height);
 775
 776     guiInitMouse(width, height);
 777
 778     // for all views
 779     FGViewMgr *viewmgr = globals->get_viewmgr();
 780     if (viewmgr) {
 781       for ( int i = 0; i < viewmgr->size(); ++i ) {
 782         viewmgr->get_view(i)->
 783           set_aspect_ratio((float)view_h / (float)width);
 784       }
 785
 786       setFOV( viewmgr->get_current_view()->get_h_fov(),
 787               viewmgr->get_current_view()->get_v_fov() );
 788       // cout << "setFOV(" << viewmgr->get_current_view()->get_h_fov()
 789       //      << ", " << viewmgr->get_current_view()->get_v_fov() << ")"
 790       //      << endl;
 791     }
 792 }
 793
 794
 795 // These are wrapper functions around ssgSetNearFar() and ssgSetFOV()
 796 // which will post process and rewrite the resulting frustum if we
 797 // want to do asymmetric view frustums.
 798
 799 static void fgHackFrustum() {
 800
 801     // specify a percent of the configured view frustum to actually
 802     // display.  This is a bit of a hack to achieve asymmetric view
 803     // frustums.  For instance, if you want to display two monitors
 804     // side by side, you could specify each with a double fov, a 0.5
 805     // aspect ratio multiplier, and then the left side monitor would
 806     // have a left_pct = 0.0, a right_pct = 0.5, a bottom_pct = 0.0,
 807     // and a top_pct = 1.0.  The right side monitor would have a
 808     // left_pct = 0.5 and a right_pct = 1.0.
 809
 810     static SGPropertyNode *left_pct
 811         = fgGetNode("/sim/current-view/frustum-left-pct");
 812     static SGPropertyNode *right_pct
 813         = fgGetNode("/sim/current-view/frustum-right-pct");
 814     static SGPropertyNode *bottom_pct
 815         = fgGetNode("/sim/current-view/frustum-bottom-pct");
 816     static SGPropertyNode *top_pct
 817         = fgGetNode("/sim/current-view/frustum-top-pct");
 818
 819     double left, right;
 820     double bottom, top;
 821     double zNear, zFar;
 822     sceneView->getProjectionMatrixAsFrustum(left, right, bottom, top, zNear, zFar);
 823     // cout << " l = " << f->getLeft()
 824     //      << " r = " << f->getRight()
 825     //      << " b = " << f->getBot()
 826     //      << " t = " << f->getTop()
 827     //      << " n = " << f->getNear()
 828     //      << " f = " << f->getFar()
 829     //      << endl;
 830
 831     double width = right - left;
 832     double height = top - bottom;
 833
 834     double l, r, t, b;
 835
 836     if ( left_pct != NULL ) {
 837         l = left + width * left_pct->getDoubleValue();
 838     } else {
 839         l = left;
 840     }
 841
 842     if ( right_pct != NULL ) {
 843         r = left + width * right_pct->getDoubleValue();
 844     } else {
 845         r = right;
 846     }
 847
 848     if ( bottom_pct != NULL ) {
 849         b = bottom + height * bottom_pct->getDoubleValue();
 850     } else {
 851         b = bottom;
 852     }
 853
 854     if ( top_pct != NULL ) {
 855         t = bottom + height * top_pct->getDoubleValue();
 856     } else {
 857         t = top;
 858     }
 859
 860     sceneView->setProjectionMatrixAsFrustum(l, r, b, t, zNear, zFar);
 861 }
 862
 863
 864 // we need some static storage space for these values.  However, we
 865 // can't store it in a renderer class object because the functions
 866 // that manipulate these are static.  They are static so they can
 867 // interface to the display callback system.  There's probably a
 868 // better way, there has to be a better way, but I'm not seeing it
 869 // right now.
 870 static float fov_width = 55.0;
 871 static float fov_height = 42.0;
 872 static float fov_near = 1.0;
 873 static float fov_far = 1000.0;
 874
 875
 876 /** FlightGear code should use this routine to set the FOV rather than
 877  *  calling the ssg routine directly
 878  */
 879 void FGRenderer::setFOV( float w, float h ) {
 880     fov_width = w;
 881     fov_height = h;
 882
 883     sceneView->setProjectionMatrixAsPerspective(fov_height,
 884                                                 fov_width/fov_height,
 885                                                 fov_near, fov_far);
 886     // fully specify the view frustum before hacking it (so we don't
 887     // accumulate hacked effects
 888     fgHackFrustum();
 889 //     sgEnviro.setFOV( w, h );
 890 }
 891
 892
 893 /** FlightGear code should use this routine to set the Near/Far clip
 894  *  planes rather than calling the ssg routine directly
 895  */
 896 void FGRenderer::setNearFar( float n, float f ) {
 897 // OSGFIXME: we have currently too much z-buffer fights
 898 n = 0.2;
 899     fov_near = n;
 900     fov_far = f;
 901
 902     sceneView->setProjectionMatrixAsPerspective(fov_height,
 903                                                 fov_width/fov_height,
 904                                                 fov_near, fov_far);
 905
 906     sceneView->getCamera()->setNearFarRatio(fov_near/fov_far);
 907     mSceneCamera->setNearFarRatio(fov_near/fov_far);
 908
 909     // fully specify the view frustum before hacking it (so we don't
 910     // accumulate hacked effects
 911     fgHackFrustum();
 912 }
 913
 914 bool FGRenderer::getPickInfo( SGVec3d& pt, SGVec3d& dir,
 915                               unsigned x, unsigned y )
 916 {
 917   // Get the matrices involved in the transform from global to screen
 918   // coordinates.
 919   osg::Matrix pm = sceneView->getCamera()->getProjectionMatrix();
 920
 921   osg::Matrix mv;
 922   osg::NodePathList paths;
 923   paths = globals->get_scenery()->get_scene_graph()->getParentalNodePaths();
 924   if (!paths.empty()) {
 925     // Ok, we know that this should not have multiple parents ...
 926     // FIXME: is this allways true?
 927     mv = osg::computeLocalToEye(sceneView->getCamera()->getViewMatrix(),
 928                                 paths.front(), false);
 929   }
 930
 931   // Compose and invert
 932   osg::Matrix m = osg::Matrix::inverse(mv*pm);
 933
 934   // Get the width and height of the display to be able to normalize the
 935   // mouse coordinate
 936   float width = fgGetInt("/sim/startup/xsize");
 937   float height = fgGetInt("/sim/startup/ysize");
 938
 939   // Compute some coordinates of in the line from the eyepoint to the
 940   // mouse click coodinates.
 941   // First build the normalized projection coordinates
 942   osg::Vec4 normPt((2*x - width)/width, -(2*y - height)/height, 1, 1);
 943   // Transform them into the real world
 944   osg::Vec4 worldPt4 = m.preMult(normPt);
 945   if (fabs(worldPt4[3]) < SGLimitsf::min())
 946     return false;
 947   SGVec3f worldPt(worldPt4[0]/worldPt4[3],
 948                   worldPt4[1]/worldPt4[3],
 949                   worldPt4[2]/worldPt4[3]);
 950
 951   // Now build a direction from the point
 952   FGViewer* view = globals->get_current_view();
 953   dir = normalize(toVec3d(worldPt - SGVec3f(view->get_view_pos())));
 954
 955   // Copy the start point
 956   pt = SGVec3d(view->get_absolute_view_pos());
 957
 958   // OSGFIXME: ist this sufficient??? especially the precision problems here??
 959 // bool mSceneView->projectWindowXYIntoObject(int x,int y,osg::Vec3& near_point,osg::Vec3& far_point) const;
 960
 961
 962   return true;
 963 }
 964
 965 // end of renderer.cxx
 966