1 // renderer.cxx -- top level sim routines
3 // Written by Curtis Olson, started May 1997.
4 // This file contains parts of main.cxx prior to october 2004
6 // Copyright (C) 1997 - 2002 Curtis L. Olson - http://www.flightgear.org/~curt
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.
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.
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.
29 #include <simgear/compiler.h>
35 #include <osg/ref_ptr>
36 #include <osg/AlphaFunc>
37 #include <osg/BlendFunc>
39 #include <osg/CameraView>
40 #include <osg/CullFace>
45 #include <osg/LightModel>
46 #include <osg/LightSource>
47 #include <osg/NodeCallback>
49 #include <osg/PolygonMode>
50 #include <osg/PolygonOffset>
51 #include <osg/ShadeModel>
52 #include <osg/Version>
55 #include <osgUtil/SceneView>
56 #include <osgUtil/UpdateVisitor>
57 #include <osgUtil/IntersectVisitor>
58 #include <osgUtil/LineSegmentIntersector>
60 #include <osg/io_utils>
61 #include <osgDB/WriteFile>
62 #include <osgDB/ReadFile>
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/util/RenderConstants.hxx>
74 #include <simgear/scene/tgdb/GroundLightManager.hxx>
75 #include <simgear/scene/tgdb/pt_lights.hxx>
76 #include <simgear/props/props.hxx>
77 #include <simgear/timing/sg_time.hxx>
78 #include <simgear/ephemeris/ephemeris.hxx>
79 #include <simgear/math/sg_random.h>
81 #include <simgear/screen/jpgfactory.hxx>
84 #include <simgear/environment/visual_enviro.hxx>
86 #include <Scenery/tileentry.hxx>
87 #include <Time/light.hxx>
88 #include <Time/light.hxx>
89 #include <Aircraft/aircraft.hxx>
90 #include <Cockpit/panel.hxx>
91 #include <Cockpit/cockpit.hxx>
92 #include <Cockpit/hud.hxx>
93 #include <Model/panelnode.hxx>
94 #include <Model/modelmgr.hxx>
95 #include <Model/acmodel.hxx>
96 #include <Scenery/scenery.hxx>
97 #include <Scenery/redout.hxx>
98 #include <Scenery/tilemgr.hxx>
99 #include <GUI/new_gui.hxx>
100 #include <Instrumentation/instrument_mgr.hxx>
101 #include <Instrumentation/HUD/HUD.hxx>
103 #include <Include/general.hxx>
104 #include "splash.hxx"
105 #include "renderer.hxx"
108 // XXX Make this go away when OSG 2.2 is released.
109 #if (FG_OSG_VERSION >= 21004)
110 #define UPDATE_VISITOR_IN_VIEWER 1
113 class SGPuDrawable : public osg::Drawable {
117 // Dynamic stuff, do not store geometry
118 setUseDisplayList(false);
120 osg::StateSet* stateSet = getOrCreateStateSet();
121 stateSet->setRenderBinDetails(1001, "RenderBin");
122 // speed optimization?
123 stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
124 // We can do translucent menus, so why not. :-)
125 stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
126 stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
127 stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
129 stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
131 stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
132 stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
134 virtual void drawImplementation(osg::RenderInfo& renderInfo) const
135 { drawImplementation(*renderInfo.getState()); }
136 void drawImplementation(osg::State& state) const
138 if (!fgOSIsMainContext(state.getGraphicsContext()))
141 state.pushStateSet(getStateSet());
143 state.setActiveTextureUnit(0);
144 state.setClientActiveTextureUnit(0);
145 state.disableAllVertexArrays();
147 glPushAttrib(GL_ALL_ATTRIB_BITS);
148 glPushClientAttrib(~0u);
156 state.dirtyAllModes();
157 state.dirtyAllAttributes();
158 state.dirtyAllVertexArrays();
161 virtual osg::Object* cloneType() const { return new SGPuDrawable; }
162 virtual osg::Object* clone(const osg::CopyOp&) const { return new SGPuDrawable; }
167 class SGHUDAndPanelDrawable : public osg::Drawable {
169 SGHUDAndPanelDrawable()
171 // Dynamic stuff, do not store geometry
172 setUseDisplayList(false);
174 osg::StateSet* stateSet = getOrCreateStateSet();
175 stateSet->setRenderBinDetails(1000, "RenderBin");
177 // speed optimization?
178 stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
179 stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
180 stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
181 stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
182 stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
184 stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
186 virtual void drawImplementation(osg::RenderInfo& renderInfo) const
187 { drawImplementation(*renderInfo.getState()); }
188 void drawImplementation(osg::State& state) const
190 // std::cout << state.getGraphicsContext() << std::endl;
191 if (!fgOSIsMainContext(state.getGraphicsContext()))
194 state.pushStateSet(getStateSet());
196 state.setActiveTextureUnit(0);
197 state.setClientActiveTextureUnit(0);
198 state.disableAllVertexArrays();
200 glPushAttrib(GL_ALL_ATTRIB_BITS);
201 glPushClientAttrib(~0u);
203 fgCockpitUpdate(&state);
205 FGInstrumentMgr *instr = static_cast<FGInstrumentMgr*>(globals->get_subsystem("instrumentation"));
206 HUD *hud = static_cast<HUD*>(instr->get_subsystem("hud"));
209 // update the panel subsystem
210 if ( globals->get_current_panel() != NULL )
211 globals->get_current_panel()->update(state);
212 // We don't need a state here - can be safely removed when we can pick
220 state.dirtyAllModes();
221 state.dirtyAllAttributes();
222 state.dirtyAllVertexArrays();
225 virtual osg::Object* cloneType() const { return new SGHUDAndPanelDrawable; }
226 virtual osg::Object* clone(const osg::CopyOp&) const { return new SGHUDAndPanelDrawable; }
231 class FGLightSourceUpdateCallback : public osg::NodeCallback {
233 virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
235 assert(dynamic_cast<osg::LightSource*>(node));
236 osg::LightSource* lightSource = static_cast<osg::LightSource*>(node);
237 osg::Light* light = lightSource->getLight();
239 FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
240 light->setAmbient(l->scene_ambient().osg());
241 light->setDiffuse(l->scene_diffuse().osg());
242 light->setSpecular(l->scene_specular().osg());
243 SGVec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
244 light->setPosition(position.osg());
245 SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
246 light->setDirection(direction.osg());
247 light->setSpotExponent(0);
248 light->setSpotCutoff(180);
249 light->setConstantAttenuation(1);
250 light->setLinearAttenuation(0);
251 light->setQuadraticAttenuation(0);
257 class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
259 FGWireFrameModeUpdateCallback() :
260 mWireframe(fgGetNode("/sim/rendering/wireframe"))
262 virtual void operator()(osg::StateAttribute* stateAttribute,
265 assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
266 osg::PolygonMode* polygonMode;
267 polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
269 if (mWireframe->getBoolValue())
270 polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
271 osg::PolygonMode::LINE);
273 polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
274 osg::PolygonMode::FILL);
277 SGSharedPtr<SGPropertyNode> mWireframe;
280 class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
282 FGLightModelUpdateCallback() :
283 mHighlights(fgGetNode("/sim/rendering/specular-highlight"))
285 virtual void operator()(osg::StateAttribute* stateAttribute,
288 assert(dynamic_cast<osg::LightModel*>(stateAttribute));
289 osg::LightModel* lightModel;
290 lightModel = static_cast<osg::LightModel*>(stateAttribute);
293 FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
294 lightModel->setAmbientIntensity(l->scene_ambient().osg());
296 lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
298 lightModel->setTwoSided(true);
299 lightModel->setLocalViewer(false);
301 if (mHighlights->getBoolValue()) {
302 lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
304 lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
308 SGSharedPtr<SGPropertyNode> mHighlights;
311 class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
313 FGFogEnableUpdateCallback() :
314 mFogEnabled(fgGetNode("/sim/rendering/fog"))
316 virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
318 if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
319 stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
321 stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
325 SGSharedPtr<SGPropertyNode> mFogEnabled;
328 class FGFogUpdateCallback : public osg::StateAttribute::Callback {
330 virtual void operator () (osg::StateAttribute* sa, osg::NodeVisitor* nv)
332 assert(dynamic_cast<SGUpdateVisitor*>(nv));
333 assert(dynamic_cast<osg::Fog*>(sa));
334 SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
335 osg::Fog* fog = static_cast<osg::Fog*>(sa);
336 fog->setMode(osg::Fog::EXP2);
337 fog->setColor(updateVisitor->getFogColor().osg());
338 fog->setDensity(updateVisitor->getFogExp2Density());
342 // update callback for the switch node guarding that splash
343 class FGScenerySwitchCallback : public osg::NodeCallback {
345 virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
347 assert(dynamic_cast<osg::Switch*>(node));
348 osg::Switch* sw = static_cast<osg::Switch*>(node);
350 double t = globals->get_sim_time_sec();
351 bool enabled = 0 < t;
352 sw->setValue(0, enabled);
362 osg::ref_ptr<osgUtil::SceneView> sceneView = new osgUtil::SceneView; // This SceneView is used by class FGJpegHttpd ( jpg-httpd.cxx )
363 static osg::ref_ptr<osg::FrameStamp> mFrameStamp = new osg::FrameStamp;
364 static osg::ref_ptr<SGUpdateVisitor> mUpdateVisitor= new SGUpdateVisitor;
366 static osg::ref_ptr<osg::Group> mRealRoot = new osg::Group;
368 static osg::ref_ptr<osg::Group> mRoot = new osg::Group;
370 static osg::ref_ptr<osg::CameraView> mCameraView = new osg::CameraView;
371 static osg::ref_ptr<osg::Camera> mBackGroundCamera = new osg::Camera;
373 FGRenderer::FGRenderer()
375 #ifdef FG_JPEG_SERVER
376 jpgRenderFrame = FGRenderer::update;
378 manipulator = new FGManipulator;
381 FGRenderer::~FGRenderer()
383 #ifdef FG_JPEG_SERVER
384 jpgRenderFrame = NULL;
388 // Initialize various GL/view parameters
389 // XXX This should be called "preinit" or something, as it initializes
390 // critical parts of the scene graph in addition to the splash screen.
392 FGRenderer::splashinit( void ) {
393 osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
396 mRealRoot = dynamic_cast<osg::Group*>(viewer->getSceneData());
397 mRealRoot->addChild(fgCreateSplashNode());
398 mFrameStamp = viewer->getFrameStamp();
399 // Scene doesn't seem to pass the frame stamp to the update
400 // visitor automatically.
401 mUpdateVisitor->setFrameStamp(mFrameStamp.get());
402 #ifdef UPDATE_VISITOR_IN_VIEWER
403 viewer->setUpdateVisitor(mUpdateVisitor.get());
405 osgViewer::Scene* scene = viewer->getScene();
406 scene->setUpdateVisitor(mUpdateVisitor.get());
409 // Add the splash screen node
410 mRealRoot->addChild(fgCreateSplashNode());
411 sceneView->setSceneData(mRealRoot.get());
412 sceneView->setDefaults(osgUtil::SceneView::COMPILE_GLOBJECTS_AT_INIT);
413 sceneView->setFrameStamp(mFrameStamp.get());
414 sceneView->setUpdateVisitor(mUpdateVisitor.get());
419 FGRenderer::init( void ) {
420 // The viewer can call this before the graphics context is current
421 // in the main thread; indeed, in a multithreaded setup it might
422 // never be current in the main thread.
424 osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
425 osg::initNotifyLevel();
427 // The number of polygon-offset "units" to place between layers. In
428 // principle, one is supposed to be enough. In practice, I find that
429 // my hardware/driver requires many more.
430 osg::PolygonOffset::setUnitsMultiplier(1);
431 osg::PolygonOffset::setFactorMultiplier(1);
433 // Go full screen if requested ...
434 if ( fgGetBool("/sim/startup/fullscreen") )
437 if ( (!strcmp(fgGetString("/sim/rendering/fog"), "disabled")) ||
438 (!fgGetBool("/sim/rendering/shading"))) {
439 // if fastest fog requested, or if flat shading force fastest
440 glHint ( GL_FOG_HINT, GL_FASTEST );
441 } else if ( !strcmp(fgGetString("/sim/rendering/fog"), "nicest") ) {
442 glHint ( GL_FOG_HINT, GL_DONT_CARE );
445 glHint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
446 glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
447 glHint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
451 ->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
453 sceneView->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
454 sceneView->getCamera()->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
458 osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
460 stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
462 stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
463 stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
465 stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
466 stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
467 stateSet->setAttribute(new osg::BlendFunc);
468 stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
470 stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
472 // this will be set below
473 stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
475 osg::Material* material = new osg::Material;
476 stateSet->setAttribute(material);
478 stateSet->setTextureAttribute(0, new osg::TexEnv);
479 stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
482 // stateSet->setAttribute(new osg::CullFace(osg::CullFace::BACK));
483 // stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::ON);
485 // this is the topmost scenegraph node for osg
486 mBackGroundCamera->addChild(thesky->getPreRoot());
487 mBackGroundCamera->setClearMask(0);
489 GLbitfield inheritanceMask = osg::CullSettings::ALL_VARIABLES;
490 inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
491 inheritanceMask &= ~osg::CullSettings::NEAR_FAR_RATIO;
492 inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
493 mBackGroundCamera->setInheritanceMask(inheritanceMask);
494 mBackGroundCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
495 mBackGroundCamera->setCullingMode(osg::CullSettings::NO_CULLING);
496 mBackGroundCamera->setRenderOrder(osg::Camera::NESTED_RENDER);
498 stateSet = mBackGroundCamera->getOrCreateStateSet();
499 stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
501 osg::Group* sceneGroup = new osg::Group;
502 sceneGroup->addChild(globals->get_scenery()->get_scene_graph());
503 sceneGroup->addChild(thesky->getCloudRoot());
505 stateSet = sceneGroup->getOrCreateStateSet();
506 stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
507 stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
509 // need to update the light on every frame
510 osg::LightSource* lightSource = new osg::LightSource;
511 lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
512 // relative because of CameraView being just a clever transform node
513 lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
514 lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
515 mRoot->addChild(lightSource);
517 lightSource->addChild(mBackGroundCamera.get());
518 lightSource->addChild(sceneGroup);
521 stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
522 stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
523 stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
524 stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
525 stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
527 // enable disable specular highlights.
528 // is the place where we might plug in an other fragment shader ...
529 osg::LightModel* lightModel = new osg::LightModel;
530 lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
531 stateSet->setAttribute(lightModel);
533 // switch to enable wireframe
534 osg::PolygonMode* polygonMode = new osg::PolygonMode;
535 polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
536 stateSet->setAttributeAndModes(polygonMode);
538 // scene fog handling
539 osg::Fog* fog = new osg::Fog;
540 fog->setUpdateCallback(new FGFogUpdateCallback);
541 stateSet->setAttributeAndModes(fog);
542 stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
545 osg::Camera* guiCamera = new osg::Camera;
546 guiCamera->setRenderOrder(osg::Camera::POST_RENDER, 100);
547 guiCamera->setClearMask(0);
548 inheritanceMask = osg::CullSettings::ALL_VARIABLES;
549 inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
550 inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
551 guiCamera->setInheritanceMask(inheritanceMask);
552 guiCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
553 guiCamera->setCullingMode(osg::CullSettings::NO_CULLING);
554 osg::Geode* geode = new osg::Geode;
555 geode->addDrawable(new SGPuDrawable);
556 geode->addDrawable(new SGHUDAndPanelDrawable);
557 guiCamera->addChild(geode);
559 mCameraView->addChild(mRoot.get());
561 osg::Switch* sw = new osg::Switch;
562 sw->setUpdateCallback(new FGScenerySwitchCallback);
563 sw->addChild(mCameraView.get());
565 mRealRoot->addChild(sw);
566 mRealRoot->addChild(FGCreateRedoutNode());
567 mRealRoot->addChild(guiCamera);
568 // sceneView->getState()->setCheckForGLErrors(osg::State::ONCE_PER_ATTRIBUTE);
572 // Update all Visuals (redraws anything graphics related)
574 FGRenderer::update( bool refresh_camera_settings ) {
575 bool scenery_loaded = fgGetBool("sim/sceneryloaded")
576 || fgGetBool("sim/sceneryloaded-override");
577 osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
578 if ( idle_state < 1000 || !scenery_loaded ) {
579 fgSetDouble("/sim/startup/splash-alpha", 1.0);
581 // Keep resetting sim time while the sim is initializing
582 globals->set_sim_time_sec( 0.0 );
584 // the splash screen is now in the scenegraph
593 // Fade out the splash screen over the first three seconds.
594 double sAlpha = SGMiscd::max(0, (2.5 - globals->get_sim_time_sec()) / 2.5);
595 fgSetDouble("/sim/startup/splash-alpha", sAlpha);
597 bool skyblend = fgGetBool("/sim/rendering/skyblend");
598 bool use_point_sprites = fgGetBool("/sim/rendering/point-sprites");
599 bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
600 bool distance_attenuation
601 = fgGetBool("/sim/rendering/distance-attenuation");
603 SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
604 distance_attenuation );
606 static const SGPropertyNode *groundlevel_nearplane
607 = fgGetNode("/sim/current-view/ground-level-nearplane-m");
609 FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
612 double actual_visibility;
613 if (fgGetBool("/environment/clouds/status")) {
614 actual_visibility = thesky->get_visibility();
616 actual_visibility = fgGetDouble("/environment/visibility-m");
619 // idle_state is now 1000 meaning we've finished all our
620 // initializations and are running the main loop, so this will
621 // now work without seg faulting the system.
623 FGViewer *current__view = globals->get_current_view();
624 // Force update of center dependent values ...
625 current__view->set_dirty();
627 if ( refresh_camera_settings ) {
629 resize( fgGetInt("/sim/startup/xsize"),
630 fgGetInt("/sim/startup/ysize") );
632 SGVec3d position = current__view->getViewPosition();
633 SGQuatd attitude = current__view->getViewOrientation();
634 SGVec3d osgPosition = attitude.transform(-position);
636 FGManipulator *manipulator
637 = globals->get_renderer()->getManipulator();
638 manipulator->setPosition(position.osg());
639 manipulator->setAttitude(attitude.osg());
641 mCameraView->setPosition(osgPosition.osg());
642 mCameraView->setAttitude(inverse(attitude).osg());
647 camera = viewer->getCamera();
649 camera = sceneView->getCamera();
652 if ( fgGetBool("/sim/rendering/textures") ) {
653 SGVec4f clearColor(l->adj_fog_color());
654 camera->setClearColor(clearColor.osg());
657 SGVec4f clearColor(l->sky_color());
658 camera->setClearColor(clearColor.osg());
661 // update fog params if visibility has changed
662 double visibility_meters = fgGetDouble("/environment/visibility-m");
663 thesky->set_visibility(visibility_meters);
665 thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
666 ( global_multi_loop * fgGetInt("/sim/speed-up") )
667 / (double)fgGetInt("/sim/model-hz") );
669 // update the sky dome
672 // The sun and moon distances are scaled down versions
673 // of the actual distance to get both the moon and the sun
674 // within the range of the far clip plane.
675 // Moon distance: 384,467 kilometers
676 // Sun distance: 150,000,000 kilometers
678 double sun_horiz_eff, moon_horiz_eff;
679 if (fgGetBool("/sim/rendering/horizon-effect")) {
680 sun_horiz_eff = 0.67+pow(0.5+cos(l->get_sun_angle())*2/2, 0.33)/3;
681 moon_horiz_eff = 0.67+pow(0.5+cos(l->get_moon_angle())*2/2, 0.33)/3;
683 sun_horiz_eff = moon_horiz_eff = 1.0;
686 static SGSkyState sstate;
688 sstate.view_pos = toVec3f(current__view->get_view_pos());
689 sstate.zero_elev = toVec3f(current__view->get_zero_elev());
690 sstate.view_up = current__view->get_world_up();
691 sstate.lon = current__view->getLongitude_deg()
692 * SGD_DEGREES_TO_RADIANS;
693 sstate.lat = current__view->getLatitude_deg()
694 * SGD_DEGREES_TO_RADIANS;
695 sstate.alt = current__view->getAltitudeASL_ft()
697 sstate.spin = l->get_sun_rotation();
698 sstate.gst = globals->get_time_params()->getGst();
699 sstate.sun_ra = globals->get_ephem()->getSunRightAscension();
700 sstate.sun_dec = globals->get_ephem()->getSunDeclination();
701 sstate.sun_dist = 50000.0 * sun_horiz_eff;
702 sstate.moon_ra = globals->get_ephem()->getMoonRightAscension();
703 sstate.moon_dec = globals->get_ephem()->getMoonDeclination();
704 sstate.moon_dist = 40000.0 * moon_horiz_eff;
705 sstate.sun_angle = l->get_sun_angle();
709 SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
710 << l->sky_color()[0] << " "
711 << l->sky_color()[1] << " "
712 << l->sky_color()[2] << " "
713 << l->sky_color()[3] );
714 SG_LOG( SG_GENERAL, SG_BULK, " fog = "
715 << l->fog_color()[0] << " "
716 << l->fog_color()[1] << " "
717 << l->fog_color()[2] << " "
718 << l->fog_color()[3] );
719 SG_LOG( SG_GENERAL, SG_BULK,
720 " sun_angle = " << l->sun_angle
721 << " moon_angle = " << l->moon_angle );
724 static SGSkyColor scolor;
726 scolor.sky_color = SGVec3f(l->sky_color().data());
727 scolor.fog_color = SGVec3f(l->adj_fog_color().data());
728 scolor.cloud_color = SGVec3f(l->cloud_color().data());
729 scolor.sun_angle = l->get_sun_angle();
730 scolor.moon_angle = l->get_moon_angle();
731 scolor.nplanets = globals->get_ephem()->getNumPlanets();
732 scolor.nstars = globals->get_ephem()->getNumStars();
733 scolor.planet_data = globals->get_ephem()->getPlanets();
734 scolor.star_data = globals->get_ephem()->getStars();
736 thesky->reposition( sstate, delta_time_sec );
737 thesky->repaint( scolor );
740 SG_LOG( SG_GENERAL, SG_BULK,
741 "thesky->reposition( view_pos = " << view_pos[0] << " "
742 << view_pos[1] << " " << view_pos[2] );
743 SG_LOG( SG_GENERAL, SG_BULK,
744 " zero_elev = " << zero_elev[0] << " "
745 << zero_elev[1] << " " << zero_elev[2]
746 << " lon = " << cur_fdm_state->get_Longitude()
747 << " lat = " << cur_fdm_state->get_Latitude() );
748 SG_LOG( SG_GENERAL, SG_BULK,
749 " sun_rot = " << l->get_sun_rotation
750 << " gst = " << SGTime::cur_time_params->getGst() );
751 SG_LOG( SG_GENERAL, SG_BULK,
752 " sun ra = " << globals->get_ephem()->getSunRightAscension()
753 << " sun dec = " << globals->get_ephem()->getSunDeclination()
754 << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
755 << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
759 // shadows->setupShadows(
760 // current__view->getLongitude_deg(),
761 // current__view->getLatitude_deg(),
762 // globals->get_time_params()->getGst(),
763 // globals->get_ephem()->getSunRightAscension(),
764 // globals->get_ephem()->getSunDeclination(),
765 // l->get_sun_angle());
769 // sgEnviro.setLight(l->adj_fog_color());
771 // texture parameters
772 glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
774 double agl = current__view->getAltitudeASL_ft()*SG_FEET_TO_METER
775 - current__view->getSGLocation()->get_cur_elev_m();
777 float scene_nearplane, scene_farplane;
779 scene_nearplane = 10.0f;
780 scene_farplane = 120000.0f;
782 scene_nearplane = groundlevel_nearplane->getDoubleValue();
783 scene_farplane = 120000.0f;
785 setNearFar( scene_nearplane, scene_farplane );
787 // sgEnviro.startOfFrame(current__view->get_view_pos(),
788 // current__view->get_world_up(),
789 // current__view->getLongitude_deg(),
790 // current__view->getLatitude_deg(),
791 // current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
795 // sgEnviro.drawLightning();
797 // double current_view_origin_airspeed_horiz_kt =
798 // fgGetDouble("/velocities/airspeed-kt", 0.0)
799 // * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
800 // * SGD_DEGREES_TO_RADIANS);
801 // TODO:find the real view speed, not the AC one
802 // sgEnviro.drawPrecipitation(
803 // fgGetDouble("/environment/metar/rain-norm", 0.0),
804 // fgGetDouble("/environment/metar/snow-norm", 0.0),
805 // fgGetDouble("/environment/metar/hail-norm", 0.0),
806 // current__view->getPitch_deg() + current__view->getPitchOffset_deg(),
807 // current__view->getRoll_deg() + current__view->getRollOffset_deg(),
808 // - current__view->getHeadingOffset_deg(),
809 // current_view_origin_airspeed_horiz_kt
814 // shadows->endOfFrame();
816 // need to call the update visitor once
818 mFrameStamp->setReferenceTime(globals->get_sim_time_sec());
819 mFrameStamp->setSimulationTime(globals->get_sim_time_sec());
820 mFrameStamp->setFrameNumber(1+mFrameStamp->getFrameNumber());
822 mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
823 mUpdateVisitor->setViewData(current__view->getViewPosition(),
824 current__view->getViewOrientation());
825 SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
826 mUpdateVisitor->setLight(direction, l->scene_ambient(),
827 l->scene_diffuse(), l->scene_specular(),
829 l->get_sun_angle()*SGD_RADIANS_TO_DEGREES);
830 mUpdateVisitor->setVisibility(actual_visibility);
831 simgear::GroundLightManager::instance()->update(mUpdateVisitor.get());
832 bool hotspots = fgGetBool("/sim/panel-hotspots");
833 osg::Node::NodeMask cullMask = ~simgear::LIGHTS_BITS & ~simgear::PICK_BIT;
834 cullMask |= simgear::GroundLightManager::instance()
835 ->getLightNodeMask(mUpdateVisitor.get());
837 cullMask |= simgear::PICK_BIT;
839 camera->setCullMask(cullMask);
840 for (int i = 0; i < viewer->getNumSlaves(); ++i)
841 viewer->getSlave(i)._camera->setCullMask(cullMask);
843 sceneView->setCullMask(cullMask);
852 // options.cxx needs to see this for toggle_panel()
853 // Handle new window size or exposure
855 FGRenderer::resize( int width, int height ) {
858 if ( (!fgGetBool("/sim/virtual-cockpit"))
859 && fgPanelVisible() && idle_state == 1000 ) {
860 view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
861 globals->get_current_panel()->getYOffset()) / 768.0);
865 osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
868 // viewer->getCamera()->getViewport()->setViewport(0, height - view_h,
871 sceneView->getViewport()->setViewport(0, height - view_h,
874 static int lastwidth = 0;
875 static int lastheight = 0;
876 if (width != lastwidth)
877 fgSetInt("/sim/startup/xsize", lastwidth = width);
878 if (height != lastheight)
879 fgSetInt("/sim/startup/ysize", lastheight = height);
881 guiInitMouse(width, height);
884 FGViewMgr *viewmgr = globals->get_viewmgr();
886 for ( int i = 0; i < viewmgr->size(); ++i ) {
887 viewmgr->get_view(i)->
888 set_aspect_ratio((float)view_h / (float)width);
891 setFOV( viewmgr->get_current_view()->get_h_fov(),
892 viewmgr->get_current_view()->get_v_fov() );
897 // we need some static storage space for these values. However, we
898 // can't store it in a renderer class object because the functions
899 // that manipulate these are static. They are static so they can
900 // interface to the display callback system. There's probably a
901 // better way, there has to be a better way, but I'm not seeing it
903 static float fov_width = 55.0;
904 static float fov_height = 42.0;
905 static float fov_near = 1.0;
906 static float fov_far = 1000.0;
909 /** FlightGear code should use this routine to set the FOV rather than
910 * calling the ssg routine directly
912 void FGRenderer::setFOV( float w, float h ) {
915 osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
917 viewer->getCamera()->setProjectionMatrixAsPerspective(fov_height, 4.0/3.0, fov_near, fov_far);
919 sceneView->setProjectionMatrixAsPerspective(fov_height,
920 fov_width/fov_height,
925 /** FlightGear code should use this routine to set the Near/Far clip
926 * planes rather than calling the ssg routine directly
928 void FGRenderer::setNearFar( float n, float f ) {
929 // OSGFIXME: we have currently too much z-buffer fights
933 osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
935 viewer->getCamera()->setProjectionMatrixAsPerspective(fov_height, 4.0/3.0, fov_near, fov_far);
937 sceneView->setProjectionMatrixAsPerspective(fov_height,
938 fov_width/fov_height,
944 FGRenderer::pick( unsigned x, unsigned y,
945 std::vector<SGSceneryPick>& pickList,
946 const osgGA::GUIEventAdapter* ea )
948 osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
949 // wipe out the return ...
952 if (sceneView.valid()) {
953 osg::Node* sceneData = globals->get_scenery()->get_scene_graph();
957 osg::Viewport* viewport = sceneView->getViewport();
960 // don't know why, but the update has partly happened somehow,
961 // so update the scenery part of the viewer
962 FGViewer *current_view = globals->get_current_view();
963 // Force update of center dependent values ...
964 current_view->set_dirty();
965 SGVec3d position = current_view->getViewPosition();
966 SGQuatd attitude = current_view->getViewOrientation();
967 SGVec3d osgPosition = attitude.transform(-position);
968 mCameraView->setPosition(osgPosition.osg());
969 mCameraView->setAttitude(inverse(attitude).osg());
971 osg::Matrix projection(sceneView->getProjectionMatrix());
972 osg::Matrix modelview(sceneView->getViewMatrix());
974 osg::NodePathList nodePath = sceneData->getParentalNodePaths();
975 // modify the view matrix so that it accounts for this nodePath's
976 // accumulated transform
977 if (!nodePath.empty())
978 modelview.preMult(computeLocalToWorld(nodePath.front()));
980 // swap the y values ...
981 y = viewport->height() - y;
982 // set up the pick visitor
983 osgUtil::PickVisitor pickVisitor(viewport, projection, modelview, x, y);
984 sceneData->accept(pickVisitor);
985 if (!pickVisitor.hits())
988 // collect all interaction callbacks on the pick ray.
989 // They get stored in the pickCallbacks list where they are sorted back
990 // to front and croasest to finest wrt the scenery node they are attached to
991 osgUtil::PickVisitor::LineSegmentHitListMap::const_iterator mi;
992 for (mi = pickVisitor.getSegHitList().begin();
993 mi != pickVisitor.getSegHitList().end();
995 osgUtil::IntersectVisitor::HitList::const_iterator hi;
996 for (hi = mi->second.begin(); hi != mi->second.end(); ++hi) {
997 // ok, go back the nodes and ask for intersection callbacks,
998 // execute them in top down order
999 const osg::NodePath& np = hi->getNodePath();
1000 osg::NodePath::const_reverse_iterator npi;
1001 for (npi = np.rbegin(); npi != np.rend(); ++npi) {
1002 SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
1005 for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
1006 SGPickCallback* pickCallback = ud->getPickCallback(i);
1009 SGSceneryPick sceneryPick;
1010 /// note that this is done totally in doubles instead of
1011 /// just using getWorldIntersectionPoint
1012 osg::Vec3d localPt = hi->getLocalIntersectPoint();
1013 sceneryPick.info.local = SGVec3d(localPt);
1014 if (hi->getMatrix())
1015 sceneryPick.info.wgs84 = SGVec3d(localPt*(*hi->getMatrix()));
1017 sceneryPick.info.wgs84 = SGVec3d(localPt);
1018 sceneryPick.callback = pickCallback;
1019 pickList.push_back(sceneryPick);
1025 return !pickList.empty();
1027 } else if (viewer) {
1029 // just compute intersections in the viewers method ...
1030 typedef osgUtil::LineSegmentIntersector::Intersections Intersections;
1031 Intersections intersections;
1032 viewer->computeIntersections(ea->getX(), ea->getY(), intersections);
1034 Intersections::iterator hit;
1035 for (hit = intersections.begin(); hit != intersections.end(); ++hit) {
1036 const osg::NodePath& np = hit->nodePath;
1037 osg::NodePath::const_reverse_iterator npi;
1038 for (npi = np.rbegin(); npi != np.rend(); ++npi) {
1039 SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
1042 for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
1043 SGPickCallback* pickCallback = ud->getPickCallback(i);
1046 SGSceneryPick sceneryPick;
1047 sceneryPick.info.local = SGVec3d(hit->getLocalIntersectPoint());
1048 sceneryPick.info.wgs84 = SGVec3d(hit->getWorldIntersectPoint());
1049 sceneryPick.callback = pickCallback;
1050 pickList.push_back(sceneryPick);
1055 return !pickList.empty();
1056 } else { // we can get called early ...
1062 FGRenderer::addCamera(osg::Camera* camera, bool useSceneData)
1064 mRealRoot->addChild(camera);
1068 fgDumpSceneGraphToFile(const char* filename)
1070 return osgDB::writeNodeFile(*mRealRoot.get(), filename);
1074 fgDumpTerrainBranchToFile(const char* filename)
1076 return osgDB::writeNodeFile( *globals->get_scenery()->get_terrain_branch(),
1082 fgDumpNodeToFile(osg::Node* node, const char* filename)
1084 return osgDB::writeNodeFile(*node, filename);
1086 // end of renderer.cxx