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