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flightgear/src/Main/renderer.cxx

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// renderer.cxx -- top level sim routines
//
// Written by Curtis Olson, started May 1997.
// This file contains parts of main.cxx prior to october 2004
//
// Copyright (C) 1997 - 2002 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef HAVE_WINDOWS_H
# include <windows.h>
#endif
#include <simgear/compiler.h>
#include <algorithm>
#include <iostream>
#include <map>
#include <vector>
#include <typeinfo>
#include <osg/ref_ptr>
#include <osg/AlphaFunc>
#include <osg/BlendFunc>
#include <osg/Camera>
#include <osg/CullFace>
#include <osg/CullStack>
#include <osg/Depth>
#include <osg/Fog>
#include <osg/Group>
#include <osg/Hint>
#include <osg/Light>
#include <osg/LightModel>
#include <osg/LightSource>
#include <osg/Material>
#include <osg/Math>
#include <osg/NodeCallback>
#include <osg/Notify>
#include <osg/PolygonMode>
#include <osg/PolygonOffset>
#include <osg/Program>
#include <osg/Version>
#include <osg/TexEnv>
#include <osgUtil/LineSegmentIntersector>
#include <osg/io_utils>
#include <osgDB/WriteFile>
#include <simgear/math/SGMath.hxx>
#include <simgear/scene/material/matlib.hxx>
#include <simgear/scene/model/animation.hxx>
#include <simgear/scene/model/placement.hxx>
#include <simgear/scene/sky/sky.hxx>
#include <simgear/scene/util/SGUpdateVisitor.hxx>
#include <simgear/scene/util/RenderConstants.hxx>
#include <simgear/scene/util/SGSceneUserData.hxx>
#include <simgear/scene/tgdb/GroundLightManager.hxx>
#include <simgear/scene/tgdb/pt_lights.hxx>
#include <simgear/structure/OSGUtils.hxx>
#include <simgear/props/props.hxx>
#include <simgear/timing/sg_time.hxx>
#include <simgear/ephemeris/ephemeris.hxx>
#include <simgear/math/sg_random.h>
#ifdef FG_JPEG_SERVER
#include <simgear/screen/jpgfactory.hxx>
#endif
#include <Time/light.hxx>
#include <Time/light.hxx>
#include <Cockpit/panel.hxx>
#include <Model/panelnode.hxx>
#include <Model/modelmgr.hxx>
#include <Model/acmodel.hxx>
#include <Scenery/scenery.hxx>
#include <Scenery/redout.hxx>
#include <GUI/new_gui.hxx>
#include <Instrumentation/HUD/HUD.hxx>
#include <Environment/precipitation_mgr.hxx>
#include "splash.hxx"
#include "renderer.hxx"
#include "main.hxx"
#include "CameraGroup.hxx"
#include "FGEventHandler.hxx"
#include <Main/viewer.hxx>
#include <Main/viewmgr.hxx>
using namespace osg;
using namespace simgear;
using namespace flightgear;
class FGHintUpdateCallback : public osg::StateAttribute::Callback {
public:
FGHintUpdateCallback(const char* configNode) :
mConfigNode(fgGetNode(configNode, true))
{ }
virtual void operator()(osg::StateAttribute* stateAttribute,
osg::NodeVisitor*)
{
assert(dynamic_cast<osg::Hint*>(stateAttribute));
osg::Hint* hint = static_cast<osg::Hint*>(stateAttribute);
const char* value = mConfigNode->getStringValue();
if (!value)
hint->setMode(GL_DONT_CARE);
else if (0 == strcmp(value, "nicest"))
hint->setMode(GL_NICEST);
else if (0 == strcmp(value, "fastest"))
hint->setMode(GL_FASTEST);
else
hint->setMode(GL_DONT_CARE);
}
private:
SGPropertyNode_ptr mConfigNode;
};
class SGPuDrawable : public osg::Drawable {
public:
SGPuDrawable()
{
// Dynamic stuff, do not store geometry
setUseDisplayList(false);
setDataVariance(Object::DYNAMIC);
osg::StateSet* stateSet = getOrCreateStateSet();
stateSet->setRenderBinDetails(1001, "RenderBin");
// speed optimization?
stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
// We can do translucent menus, so why not. :-)
stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
}
virtual void drawImplementation(osg::RenderInfo& renderInfo) const
{ drawImplementation(*renderInfo.getState()); }
void drawImplementation(osg::State& state) const
{
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
state.disableAllVertexArrays();
glPushAttrib(GL_ALL_ATTRIB_BITS);
glPushClientAttrib(~0u);
puDisplay();
glPopClientAttrib();
glPopAttrib();
}
virtual osg::Object* cloneType() const { return new SGPuDrawable; }
virtual osg::Object* clone(const osg::CopyOp&) const { return new SGPuDrawable; }
private:
};
class SGHUDAndPanelDrawable : public osg::Drawable {
public:
SGHUDAndPanelDrawable()
{
// Dynamic stuff, do not store geometry
setUseDisplayList(false);
setDataVariance(Object::DYNAMIC);
osg::StateSet* stateSet = getOrCreateStateSet();
stateSet->setRenderBinDetails(1000, "RenderBin");
// speed optimization?
stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
}
virtual void drawImplementation(osg::RenderInfo& renderInfo) const
{ drawImplementation(*renderInfo.getState()); }
void drawImplementation(osg::State& state) const
{
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
state.disableAllVertexArrays();
glPushAttrib(GL_ALL_ATTRIB_BITS);
glPushClientAttrib(~0u);
HUD *hud = static_cast<HUD*>(globals->get_subsystem("hud"));
hud->draw(state);
// update the panel subsystem
if ( globals->get_current_panel() != NULL )
globals->get_current_panel()->update(state);
// We don't need a state here - can be safely removed when we can pick
// correctly
fgUpdate3DPanels();
glPopClientAttrib();
glPopAttrib();
}
virtual osg::Object* cloneType() const { return new SGHUDAndPanelDrawable; }
virtual osg::Object* clone(const osg::CopyOp&) const { return new SGHUDAndPanelDrawable; }
private:
};
class FGLightSourceUpdateCallback : public osg::NodeCallback {
public:
/**
* @param isSun true if the light is the actual sun i.e., for
* illuminating the moon.
*/
FGLightSourceUpdateCallback(bool isSun = false) : _isSun(isSun) {}
FGLightSourceUpdateCallback(const FGLightSourceUpdateCallback& nc,
const CopyOp& op)
: NodeCallback(nc, op), _isSun(nc._isSun)
{}
META_Object(flightgear,FGLightSourceUpdateCallback);
virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
{
assert(dynamic_cast<osg::LightSource*>(node));
osg::LightSource* lightSource = static_cast<osg::LightSource*>(node);
osg::Light* light = lightSource->getLight();
FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
if (_isSun) {
light->setAmbient(Vec4(0.0f, 0.0f, 0.0f, 0.0f));
light->setDiffuse(Vec4(1.0f, 1.0f, 1.0f, 1.0f));
light->setSpecular(Vec4(0.0f, 0.0f, 0.0f, 0.0f));
} else {
light->setAmbient(toOsg(l->scene_ambient()));
light->setDiffuse(toOsg(l->scene_diffuse()));
light->setSpecular(toOsg(l->scene_specular()));
}
osg::Vec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
light->setPosition(position);
traverse(node, nv);
}
private:
const bool _isSun;
};
class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
public:
FGWireFrameModeUpdateCallback() :
mWireframe(fgGetNode("/sim/rendering/wireframe", true))
{ }
virtual void operator()(osg::StateAttribute* stateAttribute,
osg::NodeVisitor*)
{
assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
osg::PolygonMode* polygonMode;
polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
if (mWireframe->getBoolValue())
polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
osg::PolygonMode::LINE);
else
polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
osg::PolygonMode::FILL);
}
private:
SGPropertyNode_ptr mWireframe;
};
class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
public:
FGLightModelUpdateCallback() :
mHighlights(fgGetNode("/sim/rendering/specular-highlight", true))
{ }
virtual void operator()(osg::StateAttribute* stateAttribute,
osg::NodeVisitor*)
{
assert(dynamic_cast<osg::LightModel*>(stateAttribute));
osg::LightModel* lightModel;
lightModel = static_cast<osg::LightModel*>(stateAttribute);
#if 0
FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
lightModel->setAmbientIntensity(toOsg(l->scene_ambient());
#else
lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
#endif
lightModel->setTwoSided(true);
lightModel->setLocalViewer(false);
if (mHighlights->getBoolValue()) {
lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
} else {
lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
}
}
private:
SGPropertyNode_ptr mHighlights;
};
class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
public:
FGFogEnableUpdateCallback() :
mFogEnabled(fgGetNode("/sim/rendering/fog", true))
{ }
virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
{
if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
} else {
stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
}
}
private:
SGPropertyNode_ptr mFogEnabled;
};
class FGFogUpdateCallback : public osg::StateAttribute::Callback {
public:
virtual void operator () (osg::StateAttribute* sa, osg::NodeVisitor* nv)
{
assert(dynamic_cast<SGUpdateVisitor*>(nv));
assert(dynamic_cast<osg::Fog*>(sa));
SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
osg::Fog* fog = static_cast<osg::Fog*>(sa);
fog->setMode(osg::Fog::EXP2);
fog->setColor(toOsg(updateVisitor->getFogColor()));
fog->setDensity(updateVisitor->getFogExp2Density());
}
};
// update callback for the switch node guarding that splash
class FGScenerySwitchCallback : public osg::NodeCallback {
public:
virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
{
assert(dynamic_cast<osg::Switch*>(node));
osg::Switch* sw = static_cast<osg::Switch*>(node);
bool enabled = scenery_enabled;
sw->setValue(0, enabled);
if (!enabled)
return;
traverse(node, nv);
}
static bool scenery_enabled;
};
bool FGScenerySwitchCallback::scenery_enabled = false;
// Sky structures
SGSky *thesky;
static osg::ref_ptr<osg::FrameStamp> mFrameStamp = new osg::FrameStamp;
static osg::ref_ptr<SGUpdateVisitor> mUpdateVisitor= new SGUpdateVisitor;
static osg::ref_ptr<osg::Group> mRealRoot = new osg::Group;
static osg::ref_ptr<osg::Group> mRoot = new osg::Group;
FGRenderer::FGRenderer()
{
#ifdef FG_JPEG_SERVER
jpgRenderFrame = FGRenderer::update;
#endif
eventHandler = new FGEventHandler;
}
FGRenderer::~FGRenderer()
{
#ifdef FG_JPEG_SERVER
jpgRenderFrame = NULL;
#endif
}
// Initialize various GL/view parameters
// XXX This should be called "preinit" or something, as it initializes
// critical parts of the scene graph in addition to the splash screen.
void
FGRenderer::splashinit( void ) {
osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
mRealRoot = dynamic_cast<osg::Group*>(viewer->getSceneData());
mRealRoot->addChild(fgCreateSplashNode());
mFrameStamp = viewer->getFrameStamp();
// Scene doesn't seem to pass the frame stamp to the update
// visitor automatically.
mUpdateVisitor->setFrameStamp(mFrameStamp.get());
viewer->setUpdateVisitor(mUpdateVisitor.get());
fgSetDouble("/sim/startup/splash-alpha", 1.0);
}
void
FGRenderer::init( void )
{
_scenery_loaded = fgGetNode("/sim/sceneryloaded", true);
_scenery_override = fgGetNode("/sim/sceneryloaded-override", true);
_panel_hotspots = fgGetNode("/sim/panel-hotspots", true);
_virtual_cockpit = fgGetNode("/sim/virtual-cockpit", true);
_sim_delta_sec = fgGetNode("/sim/time/delta-sec", true);
_xsize = fgGetNode("/sim/startup/xsize", true);
_ysize = fgGetNode("/sim/startup/ysize", true);
_splash_alpha = fgGetNode("/sim/startup/splash-alpha", true);
_skyblend = fgGetNode("/sim/rendering/skyblend", true);
_point_sprites = fgGetNode("/sim/rendering/point-sprites", true);
_enhanced_lighting = fgGetNode("/sim/rendering/enhanced-lighting", true);
_distance_attenuation = fgGetNode("/sim/rendering/distance-attenuation", true);
_horizon_effect = fgGetNode("/sim/rendering/horizon-effect", true);
_textures = fgGetNode("/sim/rendering/textures", true);
_altitude_ft = fgGetNode("/position/altitude-ft", true);
_cloud_status = fgGetNode("/environment/clouds/status", true);
_visibility_m = fgGetNode("/environment/visibility-m", true);
}
void
FGRenderer::setupView( void )
{
osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
osg::initNotifyLevel();
// The number of polygon-offset "units" to place between layers. In
// principle, one is supposed to be enough. In practice, I find that
// my hardware/driver requires many more.
osg::PolygonOffset::setUnitsMultiplier(1);
osg::PolygonOffset::setFactorMultiplier(1);
// Go full screen if requested ...
if ( fgGetBool("/sim/startup/fullscreen") )
fgOSFullScreen();
viewer->getCamera()
->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
stateSet->setAttribute(new osg::BlendFunc);
stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
// this will be set below
stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
osg::Material* material = new osg::Material;
stateSet->setAttribute(material);
stateSet->setTextureAttribute(0, new osg::TexEnv);
stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
osg::Hint* hint = new osg::Hint(GL_FOG_HINT, GL_DONT_CARE);
hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/fog"));
stateSet->setAttribute(hint);
hint = new osg::Hint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/polygon-smooth"));
stateSet->setAttribute(hint);
hint = new osg::Hint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/line-smooth"));
stateSet->setAttribute(hint);
hint = new osg::Hint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/point-smooth"));
stateSet->setAttribute(hint);
hint = new osg::Hint(GL_PERSPECTIVE_CORRECTION_HINT, GL_DONT_CARE);
hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/perspective-correction"));
stateSet->setAttribute(hint);
osg::Group* sceneGroup = new osg::Group;
sceneGroup->addChild(globals->get_scenery()->get_scene_graph());
sceneGroup->setNodeMask(~simgear::BACKGROUND_BIT);
//sceneGroup->addChild(thesky->getCloudRoot());
stateSet = sceneGroup->getOrCreateStateSet();
stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
// need to update the light on every frame
// OSG LightSource objects are rather confusing. OSG only supports
// the 10 lights specified by OpenGL itself; if more than one
// LightSource in the scene graph have the same light number, it's
// indeterminate which values will be used to render geometry that
// has that light number enabled. Also, adding children to a
// LightSource is just a shortcut for setting up a state set that
// has the corresponding OpenGL light enabled: a LightSource will
// affect geometry anywhere in the scene graph that has its light
// number enabled in a state set.
LightSource* lightSource = new LightSource;
lightSource->getLight()->setDataVariance(Object::DYNAMIC);
// relative because of CameraView being just a clever transform node
lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
mRealRoot->addChild(lightSource);
// we need a white diffuse light for the phase of the moon
osg::LightSource* sunLight = new osg::LightSource;
sunLight->getLight()->setDataVariance(Object::DYNAMIC);
sunLight->getLight()->setLightNum(1);
sunLight->setUpdateCallback(new FGLightSourceUpdateCallback(true));
sunLight->setReferenceFrame(osg::LightSource::RELATIVE_RF);
sunLight->setLocalStateSetModes(osg::StateAttribute::ON);
// Hang a StateSet above the sky subgraph in order to turn off
// light 0
Group* skyGroup = new Group;
StateSet* skySS = skyGroup->getOrCreateStateSet();
skySS->setMode(GL_LIGHT0, StateAttribute::OFF);
skyGroup->addChild(thesky->getPreRoot());
sunLight->addChild(skyGroup);
mRoot->addChild(sceneGroup);
mRoot->addChild(sunLight);
// Clouds are added to the scene graph later
stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
// enable disable specular highlights.
// is the place where we might plug in an other fragment shader ...
osg::LightModel* lightModel = new osg::LightModel;
lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
stateSet->setAttribute(lightModel);
// switch to enable wireframe
osg::PolygonMode* polygonMode = new osg::PolygonMode;
polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
stateSet->setAttributeAndModes(polygonMode);
// scene fog handling
osg::Fog* fog = new osg::Fog;
fog->setUpdateCallback(new FGFogUpdateCallback);
stateSet->setAttributeAndModes(fog);
stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
// plug in the GUI
osg::Camera* guiCamera = getGUICamera(CameraGroup::getDefault());
if (guiCamera) {
osg::Geode* geode = new osg::Geode;
geode->addDrawable(new SGPuDrawable);
geode->addDrawable(new SGHUDAndPanelDrawable);
guiCamera->addChild(geode);
}
osg::Switch* sw = new osg::Switch;
sw->setUpdateCallback(new FGScenerySwitchCallback);
sw->addChild(mRoot.get());
mRealRoot->addChild(sw);
// The clouds are attached directly to the scene graph root
// because, in theory, they don't want the same default state set
// as the rest of the scene. This may not be true in practice.
mRealRoot->addChild(thesky->getCloudRoot());
mRealRoot->addChild(FGCreateRedoutNode());
// Attach empty program to the scene root so that shader programs
// don't leak into state sets (effects) that shouldn't have one.
stateSet = mRealRoot->getOrCreateStateSet();
stateSet->setAttributeAndModes(new osg::Program, osg::StateAttribute::ON);
}
void
FGRenderer::update()
{
globals->get_renderer()->update(true);
}
// Update all Visuals (redraws anything graphics related)
void
FGRenderer::update( bool refresh_camera_settings ) {
if (!(_scenery_loaded->getBoolValue() ||
_scenery_override->getBoolValue()))
{
_splash_alpha->setDoubleValue(1.0);
return;
}
osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
if (_splash_alpha->getDoubleValue()>0.0)
{
// Fade out the splash screen
const double fade_time = 0.8;
const double fade_steps_per_sec = 20;
double delay_time = SGMiscd::min(fade_time/fade_steps_per_sec,
(SGTimeStamp::now() - _splash_time).toSecs());
_splash_time = SGTimeStamp::now();
double sAlpha = _splash_alpha->getDoubleValue();
sAlpha -= SGMiscd::max(0.0,delay_time/fade_time);
FGScenerySwitchCallback::scenery_enabled = (sAlpha<1.0);
_splash_alpha->setDoubleValue(sAlpha);
}
bool skyblend = _skyblend->getBoolValue();
bool use_point_sprites = _point_sprites->getBoolValue();
bool enhanced_lighting = _enhanced_lighting->getBoolValue();
bool distance_attenuation = _distance_attenuation->getBoolValue();
// OSGFIXME
SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
distance_attenuation );
FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
// update fog params
double actual_visibility;
if (_cloud_status->getBoolValue()) {
actual_visibility = thesky->get_visibility();
} else {
actual_visibility = _visibility_m->getDoubleValue();
}
// idle_state is now 1000 meaning we've finished all our
// initializations and are running the main loop, so this will
// now work without seg faulting the system.
FGViewer *current__view = globals->get_current_view();
// Force update of center dependent values ...
current__view->set_dirty();
if ( refresh_camera_settings ) {
// update view port
resize( _xsize->getIntValue(),
_ysize->getIntValue() );
}
osg::Camera *camera = viewer->getCamera();
if ( skyblend ) {
if ( _textures->getBoolValue() ) {
SGVec4f clearColor(l->adj_fog_color());
camera->setClearColor(toOsg(clearColor));
}
} else {
SGVec4f clearColor(l->sky_color());
camera->setClearColor(toOsg(clearColor));
}
// update fog params if visibility has changed
double visibility_meters = _visibility_m->getDoubleValue();
thesky->set_visibility(visibility_meters);
double altitude_m = _altitude_ft->getDoubleValue() * SG_FEET_TO_METER;
thesky->modify_vis( altitude_m, 0.0 /* time factor, now unused */);
// update the sky dome
if ( skyblend ) {
// The sun and moon distances are scaled down versions
// of the actual distance to get both the moon and the sun
// within the range of the far clip plane.
// Moon distance: 384,467 kilometers
// Sun distance: 150,000,000 kilometers
double sun_horiz_eff, moon_horiz_eff;
if (_horizon_effect->getBoolValue()) {
sun_horiz_eff
= 0.67 + pow(osg::clampAbove(0.5 + cos(l->get_sun_angle()),
0.0),
0.33) / 3.0;
moon_horiz_eff
= 0.67 + pow(osg::clampAbove(0.5 + cos(l->get_moon_angle()),
0.0),
0.33)/3.0;
} else {
sun_horiz_eff = moon_horiz_eff = 1.0;
}
SGSkyState sstate;
sstate.pos = current__view->getViewPosition();
sstate.pos_geod = current__view->getPosition();
sstate.ori = current__view->getViewOrientation();
sstate.spin = l->get_sun_rotation();
sstate.gst = globals->get_time_params()->getGst();
sstate.sun_dist = 50000.0 * sun_horiz_eff;
sstate.moon_dist = 40000.0 * moon_horiz_eff;
sstate.sun_angle = l->get_sun_angle();
SGSkyColor scolor;
scolor.sky_color = SGVec3f(l->sky_color().data());
scolor.adj_sky_color = SGVec3f(l->adj_sky_color().data());
scolor.fog_color = SGVec3f(l->adj_fog_color().data());
scolor.cloud_color = SGVec3f(l->cloud_color().data());
scolor.sun_angle = l->get_sun_angle();
scolor.moon_angle = l->get_moon_angle();
double delta_time_sec = _sim_delta_sec->getDoubleValue();
thesky->reposition( sstate, *globals->get_ephem(), delta_time_sec );
thesky->repaint( scolor, *globals->get_ephem() );
//OSGFIXME
// shadows->setupShadows(
// current__view->getLongitude_deg(),
// current__view->getLatitude_deg(),
// globals->get_time_params()->getGst(),
// globals->get_ephem()->getSunRightAscension(),
// globals->get_ephem()->getSunDeclination(),
// l->get_sun_angle());
}
// sgEnviro.setLight(l->adj_fog_color());
// sgEnviro.startOfFrame(current__view->get_view_pos(),
// current__view->get_world_up(),
// current__view->getLongitude_deg(),
// current__view->getLatitude_deg(),
// current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
// delta_time_sec);
// OSGFIXME
// sgEnviro.drawLightning();
// double current_view_origin_airspeed_horiz_kt =
// fgGetDouble("/velocities/airspeed-kt", 0.0)
// * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
// * SGD_DEGREES_TO_RADIANS);
// OSGFIXME
// if( is_internal )
// shadows->endOfFrame();
// need to call the update visitor once
mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
mUpdateVisitor->setViewData(current__view->getViewPosition(),
current__view->getViewOrientation());
SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
mUpdateVisitor->setLight(direction, l->scene_ambient(),
l->scene_diffuse(), l->scene_specular(),
l->adj_fog_color(),
l->get_sun_angle()*SGD_RADIANS_TO_DEGREES);
mUpdateVisitor->setVisibility(actual_visibility);
simgear::GroundLightManager::instance()->update(mUpdateVisitor.get());
osg::Node::NodeMask cullMask = ~simgear::LIGHTS_BITS & ~simgear::PICK_BIT;
cullMask |= simgear::GroundLightManager::instance()
->getLightNodeMask(mUpdateVisitor.get());
if (_panel_hotspots->getBoolValue())
cullMask |= simgear::PICK_BIT;
CameraGroup::getDefault()->setCameraCullMasks(cullMask);
}
// options.cxx needs to see this for toggle_panel()
// Handle new window size or exposure
void
FGRenderer::resize( int width, int height ) {
// the following breaks aspect-ratio of the main 3D scenery window when 2D panels are moved
// in y direction - causing issues for aircraft with 2D panels (/sim/virtual_cockpit=false).
// Disabling for now. Seems this useful for the pre-OSG time only.
// if ( (!_virtual_cockpit->getBoolValue())
// && fgPanelVisible() && idle_state == 1000 ) {
// view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
// globals->get_current_panel()->getYOffset()) / 768.0);
// }
int curWidth = _xsize->getIntValue(),
curHeight = _ysize->getIntValue();
if ((curHeight != height) || (curWidth != width)) {
// must guard setting these, or PLIB-PUI fails with too many live interfaces
_xsize->setIntValue(width);
_ysize->setIntValue(height);
}
// must set view aspect ratio each frame, or initial values are wrong.
// should probably be fixed 'smarter' during view setup.
double aspect = height / (double) width;
// for all views
FGViewMgr *viewmgr = globals->get_viewmgr();
if (viewmgr) {
for ( int i = 0; i < viewmgr->size(); ++i ) {
viewmgr->get_view(i)->set_aspect_ratio(aspect);
}
}
}
bool
FGRenderer::pick(std::vector<SGSceneryPick>& pickList,
const osgGA::GUIEventAdapter* ea)
{
// wipe out the return ...
pickList.clear();
typedef osgUtil::LineSegmentIntersector::Intersections Intersections;
Intersections intersections;
if (!computeIntersections(CameraGroup::getDefault(), ea, intersections))
return false;
for (Intersections::iterator hit = intersections.begin(),
e = intersections.end();
hit != e;
++hit) {
const osg::NodePath& np = hit->nodePath;
osg::NodePath::const_reverse_iterator npi;
for (npi = np.rbegin(); npi != np.rend(); ++npi) {
SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
if (!ud)
continue;
for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
SGPickCallback* pickCallback = ud->getPickCallback(i);
if (!pickCallback)
continue;
SGSceneryPick sceneryPick;
sceneryPick.info.local = toSG(hit->getLocalIntersectPoint());
sceneryPick.info.wgs84 = toSG(hit->getWorldIntersectPoint());
sceneryPick.callback = pickCallback;
pickList.push_back(sceneryPick);
}
}
}
return !pickList.empty();
}
void
FGRenderer::setViewer(osgViewer::Viewer* viewer_)
{
viewer = viewer_;
}
void
FGRenderer::setEventHandler(FGEventHandler* eventHandler_)
{
eventHandler = eventHandler_;
}
void
FGRenderer::addCamera(osg::Camera* camera, bool useSceneData)
{
mRealRoot->addChild(camera);
}
bool
fgDumpSceneGraphToFile(const char* filename)
{
return osgDB::writeNodeFile(*mRealRoot.get(), filename);
}
bool
fgDumpTerrainBranchToFile(const char* filename)
{
return osgDB::writeNodeFile( *globals->get_scenery()->get_terrain_branch(),
filename );
}
// For debugging
bool
fgDumpNodeToFile(osg::Node* node, const char* filename)
{
return osgDB::writeNodeFile(*node, filename);
}
namespace flightgear
{
using namespace osg;
class VisibleSceneInfoVistor : public NodeVisitor, CullStack
{
public:
VisibleSceneInfoVistor()
: NodeVisitor(CULL_VISITOR, TRAVERSE_ACTIVE_CHILDREN)
{
setCullingMode(CullSettings::SMALL_FEATURE_CULLING
| CullSettings::VIEW_FRUSTUM_CULLING);
setComputeNearFarMode(CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
}
VisibleSceneInfoVistor(const VisibleSceneInfoVistor& rhs)
{
}
META_NodeVisitor("flightgear","VisibleSceneInfoVistor")
typedef std::map<const std::string,int> InfoMap;
void getNodeInfo(Node* node)
{
const char* typeName = typeid(*node).name();
classInfo[typeName]++;
const std::string& nodeName = node->getName();
if (!nodeName.empty())
nodeInfo[nodeName]++;
}
void dumpInfo()
{
using namespace std;
typedef vector<InfoMap::iterator> FreqVector;
cout << "class info:\n";
FreqVector classes;
for (InfoMap::iterator itr = classInfo.begin(), end = classInfo.end();
itr != end;
++itr)
classes.push_back(itr);
sort(classes.begin(), classes.end(), freqComp);
for (FreqVector::iterator itr = classes.begin(), end = classes.end();
itr != end;
++itr) {
cout << (*itr)->first << " " << (*itr)->second << "\n";
}
cout << "\nnode info:\n";
FreqVector nodes;
for (InfoMap::iterator itr = nodeInfo.begin(), end = nodeInfo.end();
itr != end;
++itr)
nodes.push_back(itr);
sort (nodes.begin(), nodes.end(), freqComp);
for (FreqVector::iterator itr = nodes.begin(), end = nodes.end();
itr != end;
++itr) {
cout << (*itr)->first << " " << (*itr)->second << "\n";
}
cout << endl;
}
void doTraversal(Camera* camera, Node* root, Viewport* viewport)
{
ref_ptr<RefMatrix> projection
= createOrReuseMatrix(camera->getProjectionMatrix());
ref_ptr<RefMatrix> mv = createOrReuseMatrix(camera->getViewMatrix());
if (!viewport)
viewport = camera->getViewport();
if (viewport)
pushViewport(viewport);
pushProjectionMatrix(projection.get());
pushModelViewMatrix(mv.get(), Transform::ABSOLUTE_RF);
root->accept(*this);
popModelViewMatrix();
popProjectionMatrix();
if (viewport)
popViewport();
dumpInfo();
}
void apply(Node& node)
{
if (isCulled(node))
return;
pushCurrentMask();
getNodeInfo(&node);
traverse(node);
popCurrentMask();
}
void apply(Group& node)
{
if (isCulled(node))
return;
pushCurrentMask();
getNodeInfo(&node);
traverse(node);
popCurrentMask();
}
void apply(Transform& node)
{
if (isCulled(node))
return;
pushCurrentMask();
ref_ptr<RefMatrix> matrix = createOrReuseMatrix(*getModelViewMatrix());
node.computeLocalToWorldMatrix(*matrix,this);
pushModelViewMatrix(matrix.get(), node.getReferenceFrame());
getNodeInfo(&node);
traverse(node);
popModelViewMatrix();
popCurrentMask();
}
void apply(Camera& camera)
{
// Save current cull settings
CullSettings saved_cull_settings(*this);
// set cull settings from this Camera
setCullSettings(camera);
// inherit the settings from above
inheritCullSettings(saved_cull_settings, camera.getInheritanceMask());
// set the cull mask.
unsigned int savedTraversalMask = getTraversalMask();
bool mustSetCullMask = (camera.getInheritanceMask()
& osg::CullSettings::CULL_MASK) == 0;
if (mustSetCullMask)
setTraversalMask(camera.getCullMask());
osg::RefMatrix* projection = 0;
osg::RefMatrix* modelview = 0;
if (camera.getReferenceFrame()==osg::Transform::RELATIVE_RF) {
if (camera.getTransformOrder()==osg::Camera::POST_MULTIPLY) {
projection = createOrReuseMatrix(*getProjectionMatrix()
*camera.getProjectionMatrix());
modelview = createOrReuseMatrix(*getModelViewMatrix()
* camera.getViewMatrix());
}
else { // pre multiply
projection = createOrReuseMatrix(camera.getProjectionMatrix()
* (*getProjectionMatrix()));
modelview = createOrReuseMatrix(camera.getViewMatrix()
* (*getModelViewMatrix()));
}
} else {
// an absolute reference frame
projection = createOrReuseMatrix(camera.getProjectionMatrix());
modelview = createOrReuseMatrix(camera.getViewMatrix());
}
if (camera.getViewport())
pushViewport(camera.getViewport());
pushProjectionMatrix(projection);
pushModelViewMatrix(modelview, camera.getReferenceFrame());
traverse(camera);
// restore the previous model view matrix.
popModelViewMatrix();
// restore the previous model view matrix.
popProjectionMatrix();
if (camera.getViewport()) popViewport();
// restore the previous traversal mask settings
if (mustSetCullMask)
setTraversalMask(savedTraversalMask);
// restore the previous cull settings
setCullSettings(saved_cull_settings);
}
protected:
// sort in reverse
static bool freqComp(const InfoMap::iterator& lhs, const InfoMap::iterator& rhs)
{
return lhs->second > rhs->second;
}
InfoMap classInfo;
InfoMap nodeInfo;
};
bool printVisibleSceneInfo(FGRenderer* renderer)
{
osgViewer::Viewer* viewer = renderer->getViewer();
VisibleSceneInfoVistor vsv;
Viewport* vp = 0;
if (!viewer->getCamera()->getViewport() && viewer->getNumSlaves() > 0) {
const View::Slave& slave = viewer->getSlave(0);
vp = slave._camera->getViewport();
}
vsv.doTraversal(viewer->getCamera(), viewer->getSceneData(), vp);
return true;
}
}
// end of renderer.cxx
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