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flightgear/src/Environment/environment_mgr.cxx
ThorstenB e42a8f597c Automatic tower positioning 
New "auto-position" switch to always use closest tower for tower-view.
Exposes new "/sim/airport/closest-airport-id" property.
Display closest airport on groundradar by default.
2011-04-18 22:54:33 +02:00

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// environment-mgr.cxx -- manager for natural environment information.
//
// Written by David Megginson, started February 2002.
//
// Copyright (C) 2002 David Megginson - david@megginson.com
//
// 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
#include <cstring>
#include <simgear/constants.h>
#include <simgear/debug/logstream.hxx>
#include <simgear/scene/sky/sky.hxx>
#include <simgear/environment/visual_enviro.hxx>
#include <simgear/scene/model/particles.hxx>
#include <Main/main.hxx>
#include <Main/fg_props.hxx>
#include <FDM/flight.hxx>
#include "environment.hxx"
#include "environment_mgr.hxx"
#include "environment_ctrl.hxx"
#include "realwx_ctrl.hxx"
#include "fgclouds.hxx"
#include "precipitation_mgr.hxx"
#include "ridge_lift.hxx"
#include "terrainsampler.hxx"
#include "Airports/simple.hxx"
class SGSky;
extern SGSky *thesky;
FGEnvironmentMgr::FGEnvironmentMgr () :
_environment(new FGEnvironment()),
fgClouds(new FGClouds()),
_cloudLayersDirty(true),
_altitudeNode(fgGetNode("/position/altitude-ft", true)),
_longitude_n(fgGetNode( "/position/longitude-deg", true )),
_latitude_n( fgGetNode( "/position/latitude-deg", true )),
_positionTimeToLive(0.0)
{
set_subsystem("controller", Environment::LayerInterpolateController::createInstance( fgGetNode("/environment/config", true ) ));
set_subsystem("realwx", Environment::RealWxController::createInstance( fgGetNode("/environment/realwx", true ) ), 1.0 );
set_subsystem("precipitation", new FGPrecipitationMgr);
set_subsystem("terrainsampler", Environment::TerrainSampler::createInstance( fgGetNode("/environment/terrain", true ) ));
set_subsystem("ridgelift", new FGRidgeLift);
}
FGEnvironmentMgr::~FGEnvironmentMgr ()
{
SGSubsystem * subsys;
subsys = get_subsystem( "ridgelift" );
remove_subsystem( "ridgelift" );
delete subsys;
subsys = get_subsystem( "terrainsampler" );
remove_subsystem( "terrainsampler" );
delete subsys;
subsys = get_subsystem( "precipitation" );
remove_subsystem("precipitation");
delete subsys;
subsys = get_subsystem("realwx");
remove_subsystem("realwx");
delete subsys;
subsys = get_subsystem("controller");
remove_subsystem("controller");
delete subsys;
delete fgClouds;
delete _environment;
}
void
FGEnvironmentMgr::init ()
{
SG_LOG( SG_GENERAL, SG_INFO, "Initializing environment subsystem");
SGSubsystemGroup::init();
}
void
FGEnvironmentMgr::reinit ()
{
SG_LOG( SG_GENERAL, SG_INFO, "Reinitializing environment subsystem");
SGSubsystemGroup::reinit();
}
void
FGEnvironmentMgr::bind ()
{
SGSubsystemGroup::bind();
_environment->Tie( fgGetNode("/environment", true ) );
_tiedProperties.setRoot( fgGetNode( "/environment", true ) );
_tiedProperties.Tie( "effective-visibility-m", thesky,
&SGSky::get_visibility );
_tiedProperties.Tie("rebuild-layers", fgClouds,
&FGClouds::get_update_event,
&FGClouds::set_update_event);
_tiedProperties.Tie("turbulence/use-cloud-turbulence", &sgEnviro,
&SGEnviro::get_turbulence_enable_state,
&SGEnviro::set_turbulence_enable_state);
for (int i = 0; i < MAX_CLOUD_LAYERS; i++) {
SGPropertyNode_ptr layerNode = fgGetNode("/environment/clouds",true)->getChild("layer", i, true );
_tiedProperties.Tie( layerNode->getNode("span-m",true), this, i,
&FGEnvironmentMgr::get_cloud_layer_span_m,
&FGEnvironmentMgr::set_cloud_layer_span_m);
_tiedProperties.Tie( layerNode->getNode("elevation-ft",true), this, i,
&FGEnvironmentMgr::get_cloud_layer_elevation_ft,
&FGEnvironmentMgr::set_cloud_layer_elevation_ft);
_tiedProperties.Tie( layerNode->getNode("thickness-ft",true), this, i,
&FGEnvironmentMgr::get_cloud_layer_thickness_ft,
&FGEnvironmentMgr::set_cloud_layer_thickness_ft);
_tiedProperties.Tie( layerNode->getNode("transition-ft",true), this, i,
&FGEnvironmentMgr::get_cloud_layer_transition_ft,
&FGEnvironmentMgr::set_cloud_layer_transition_ft);
_tiedProperties.Tie( layerNode->getNode("coverage",true), this, i,
&FGEnvironmentMgr::get_cloud_layer_coverage,
&FGEnvironmentMgr::set_cloud_layer_coverage);
_tiedProperties.Tie( layerNode->getNode("coverage-type",true), this, i,
&FGEnvironmentMgr::get_cloud_layer_coverage_type,
&FGEnvironmentMgr::set_cloud_layer_coverage_type);
_tiedProperties.Tie( layerNode->getNode( "visibility-m",true), this, i,
&FGEnvironmentMgr::get_cloud_layer_visibility_m,
&FGEnvironmentMgr::set_cloud_layer_visibility_m);
_tiedProperties.Tie( layerNode->getNode( "alpha",true), this, i,
&FGEnvironmentMgr::get_cloud_layer_maxalpha,
&FGEnvironmentMgr::set_cloud_layer_maxalpha);
}
_tiedProperties.setRoot( fgGetNode("/sim/rendering", true ) );
_tiedProperties.Tie( "clouds3d-enable", fgClouds,
&FGClouds::get_3dClouds,
&FGClouds::set_3dClouds);
_tiedProperties.Tie( "clouds3d-density", thesky,
&SGSky::get_3dCloudDensity,
&SGSky::set_3dCloudDensity);
_tiedProperties.Tie("clouds3d-vis-range", thesky,
&SGSky::get_3dCloudVisRange,
&SGSky::set_3dCloudVisRange);
_tiedProperties.Tie("precipitation-enable", &sgEnviro,
&SGEnviro::get_precipitation_enable_state,
&SGEnviro::set_precipitation_enable_state);
_tiedProperties.Tie("lightning-enable", &sgEnviro,
&SGEnviro::get_lightning_enable_state,
&SGEnviro::set_lightning_enable_state);
sgEnviro.config(fgGetNode("/sim/rendering/precipitation"));
}
void
FGEnvironmentMgr::unbind ()
{
_tiedProperties.Untie();
_environment->Untie();
SGSubsystemGroup::unbind();
}
void
FGEnvironmentMgr::update (double dt)
{
SGSubsystemGroup::update(dt);
_environment->set_elevation_ft( _altitudeNode->getDoubleValue() );
simgear::Particles::setWindFrom( _environment->get_wind_from_heading_deg(),
_environment->get_wind_speed_kt() );
if( _cloudLayersDirty ) {
_cloudLayersDirty = false;
fgClouds->set_update_event( fgClouds->get_update_event()+1 );
}
_positionTimeToLive -= dt;
if( _positionTimeToLive <= 0.0 )
{
// update closest airport information
_positionTimeToLive = 30.0;
SG_LOG(SG_ALL, SG_INFO, "FGEnvironmentMgr::update: updating closest airport");
SGGeod pos = SGGeod::fromDeg(_longitude_n->getDoubleValue(),
_latitude_n->getDoubleValue());
FGAirport * nearestAirport = FGAirport::findClosest(pos, 100.0);
if( nearestAirport == NULL )
{
SG_LOG(SG_ALL,SG_WARN,"FGEnvironmentMgr::update: No airport within 100NM range");
}
else
{
const string currentId = fgGetString("/sim/airport/closest-airport-id", "");
if (currentId != nearestAirport->ident())
{
fgSetString("/sim/airport/closest-airport-id",
nearestAirport->ident().c_str());
}
}
}
}
FGEnvironment
FGEnvironmentMgr::getEnvironment () const
{
return *_environment;
}
FGEnvironment
FGEnvironmentMgr::getEnvironment (double lat, double lon, double alt) const
{
// Always returns the same environment
// for now; we'll make it interesting
// later.
FGEnvironment env = *_environment;
env.set_elevation_ft(alt);
return env;
}
FGEnvironment
FGEnvironmentMgr::getEnvironment(const SGGeod& aPos) const
{
// Always returns the same environment
// for now; we'll make it interesting
// later.
FGEnvironment env = *_environment;
env.set_elevation_ft(aPos.getElevationFt());
return env;
}
double
FGEnvironmentMgr::get_cloud_layer_span_m (int index) const
{
return thesky->get_cloud_layer(index)->getSpan_m();
}
void
FGEnvironmentMgr::set_cloud_layer_span_m (int index, double span_m)
{
thesky->get_cloud_layer(index)->setSpan_m(span_m);
}
double
FGEnvironmentMgr::get_cloud_layer_elevation_ft (int index) const
{
return thesky->get_cloud_layer(index)->getElevation_m() * SG_METER_TO_FEET;
}
void
FGEnvironmentMgr::set_cloud_layer_elevation_ft (int index, double elevation_ft)
{
FGEnvironment env = *_environment;
env.set_elevation_ft(elevation_ft);
thesky->get_cloud_layer(index)
->setElevation_m(elevation_ft * SG_FEET_TO_METER);
thesky->get_cloud_layer(index)
->setSpeed(env.get_wind_speed_kt() * 0.5151); // 1 kt = 0.5151 m/s
thesky->get_cloud_layer(index)
->setDirection(env.get_wind_from_heading_deg());
}
double
FGEnvironmentMgr::get_cloud_layer_thickness_ft (int index) const
{
return thesky->get_cloud_layer(index)->getThickness_m() * SG_METER_TO_FEET;
}
void
FGEnvironmentMgr::set_cloud_layer_thickness_ft (int index, double thickness_ft)
{
thesky->get_cloud_layer(index)
->setThickness_m(thickness_ft * SG_FEET_TO_METER);
}
double
FGEnvironmentMgr::get_cloud_layer_transition_ft (int index) const
{
return thesky->get_cloud_layer(index)->getTransition_m() * SG_METER_TO_FEET;
}
void
FGEnvironmentMgr::set_cloud_layer_transition_ft (int index,
double transition_ft)
{
thesky->get_cloud_layer(index)
->setTransition_m(transition_ft * SG_FEET_TO_METER);
}
const char *
FGEnvironmentMgr::get_cloud_layer_coverage (int index) const
{
return thesky->get_cloud_layer(index)->getCoverageString().c_str();
}
void
FGEnvironmentMgr::set_cloud_layer_coverage (int index,
const char * coverage_name)
{
if( thesky->get_cloud_layer(index)->getCoverageString() == coverage_name )
return;
thesky->get_cloud_layer(index)->setCoverageString(coverage_name);
_cloudLayersDirty = true;
}
int
FGEnvironmentMgr::get_cloud_layer_coverage_type (int index) const
{
return thesky->get_cloud_layer(index)->getCoverage();
}
double
FGEnvironmentMgr::get_cloud_layer_visibility_m (int index) const
{
return thesky->get_cloud_layer(index)->getVisibility_m();
}
void
FGEnvironmentMgr::set_cloud_layer_visibility_m (int index, double visibility_m)
{
thesky->get_cloud_layer(index)->setVisibility_m(visibility_m);
}
double
FGEnvironmentMgr::get_cloud_layer_maxalpha (int index ) const
{
return thesky->get_cloud_layer(index)->getMaxAlpha();
}
void
FGEnvironmentMgr::set_cloud_layer_maxalpha (int index, double maxalpha)
{
thesky->get_cloud_layer(index)->setMaxAlpha(maxalpha);
}
void
FGEnvironmentMgr::set_cloud_layer_coverage_type (int index, int type )
{
if( type < 0 || type >= SGCloudLayer::SG_MAX_CLOUD_COVERAGES ) {
SG_LOG(SG_ALL,SG_WARN,"Unknown cloud layer type " << type << " ignored" );
return;
}
if( static_cast<SGCloudLayer::Coverage>(type) == thesky->get_cloud_layer(index)->getCoverage() )
return;
thesky->get_cloud_layer(index)->setCoverage(static_cast<SGCloudLayer::Coverage>(type));
_cloudLayersDirty = true;
}
// end of environment-mgr.cxx
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