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Add variable winds (direction and gusts) for the boundary layer if defined in METAR.

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This commit is contained in:
torsten 2009-06-03 16:29:58 +00:00 committed by Tim Moore
parent 1873346d18
commit ab4928f7a9
6 changed files with 338 additions and 189 deletions
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1
src/Environment/Makefile.am
View file

@ -9,6 +9,7 @@ libEnvironment_a_SOURCES = \
environment_mgr.cxx environment_mgr.hxx \
environment_ctrl.cxx environment_ctrl.hxx \
fgmetar.cxx fgmetar.hxx fgclouds.cxx fgclouds.hxx \
fgwind.cxx fgwind.hxx \
atmosphere.cxx atmosphere.hxx \
precipitation_mgr.cxx precipitation_mgr.hxx \
ridge_lift.cxx ridge_lift.hxx

206
src/Environment/environment_ctrl.cxx
View file

@ -133,35 +133,49 @@ FGInterpolateEnvironmentCtrl::init ()
void
FGInterpolateEnvironmentCtrl::reinit ()
{
// TODO: do we really need to throw away the old tables on reinit? Better recycle
unsigned int i;
for (i = 0; i < _boundary_table.size(); i++)
delete _boundary_table[i];
for (i = 0; i < _aloft_table.size(); i++)
delete _aloft_table[i];
_boundary_table.clear();
_aloft_table.clear();
init();
}
void
FGInterpolateEnvironmentCtrl::read_table (const SGPropertyNode * node, vector<bucket *> &table)
{
for (int i = 0; i < node->nChildren(); i++) {
double last_altitude_ft = 0.0;
double sort_required = false;
int i;
for (i = 0; i < node->nChildren(); i++) {
const SGPropertyNode * child = node->getChild(i);
if ( strcmp(child->getName(), "entry") == 0
&& child->getStringValue("elevation-ft", "")[0] != '\0'
&& ( child->getDoubleValue("elevation-ft") > 0.1 || i == 0 ) )
{
bucket * b = new bucket;
bucket * b;
if( i < table.size() ) {
// recycle existing bucket
b = table[i];
} else {
// more nodes than buckets in table, add a new one
b = new bucket;
table.push_back(b);
}
if (i > 0)
b->environment.copy(table[i-1]->environment);
b->environment.read(child);
b->altitude_ft = b->environment.get_elevation_ft();
table.push_back(b);
// check, if altitudes are in ascending order
if( b->altitude_ft < last_altitude_ft )
sort_required = true;
last_altitude_ft = b->altitude_ft;
}
}
sort(table.begin(), table.end(), bucket::lessThan);
// remove leftover buckets
vector<bucket*>::iterator it = table.begin() + i;
while( it != table.end() )
table.erase( it );
if( sort_required )
sort(table.begin(), table.end(), bucket::lessThan);
}
void
@ -181,6 +195,8 @@ FGInterpolateEnvironmentCtrl::update (double delta_time_sec)
do_interpolate(_boundary_table, altitude_agl_ft, _environment);
return;
} else if ((boundary_limit + boundary_transition) >= altitude_agl_ft) {
//TODO: this is 500ft above the top altitude of boundary layer
//shouldn't this be +/-250 ft off of the top altitude?
// both tables
do_interpolate(_boundary_table, altitude_agl_ft, &env1);
do_interpolate(_aloft_table, altitude_ft, &env2);
@ -250,6 +266,7 @@ FGMetarCtrl::FGMetarCtrl( SGSubsystem * environmentCtrl )
station_elevation_ft(0.0),
metar_valid(false),
setup_winds_aloft(true),
wind_interpolation_required(true),
// Interpolation constant definitions.
EnvironmentUpdatePeriodSec( 0.2 ),
MaxWindChangeKtsSec( 0.2 ),
@ -260,6 +277,8 @@ FGMetarCtrl::FGMetarCtrl( SGSubsystem * environmentCtrl )
MaxCloudInterpolationHeightFt( 5000.0 ),
MaxCloudInterpolationDeltaFt( 4000.0 )
{
windModulator = new FGBasicWindModulator();
metar_base_n = fgGetNode( "/environment/metar", true );
station_id_n = metar_base_n->getNode("station-id", true );
station_elevation_n = metar_base_n->getNode("station-elevation-ft", true );
@ -268,7 +287,7 @@ FGMetarCtrl::FGMetarCtrl( SGSubsystem * environmentCtrl )
base_wind_range_from_n = metar_base_n->getNode("base-wind-range-from", true );
base_wind_range_to_n = metar_base_n->getNode("base-wind-range-to", true );
base_wind_speed_n = metar_base_n->getNode("base-wind-speed-kt", true );
base_wind_dir_n = metar_base_n->getNode("base-wind-dir-deg", true );
base_wind_dir_n = metar_base_n->getNode("base-wind-dir-deg", true );
gust_wind_speed_n = metar_base_n->getNode("gust-wind-speed-kt", true );
temperature_n = metar_base_n->getNode("temperature-degc", true );
dewpoint_n = metar_base_n->getNode("dewpoint-degc", true );
@ -296,16 +315,16 @@ FGMetarCtrl::~FGMetarCtrl ()
void FGMetarCtrl::bind ()
{
fgTie("/environment/metar/valid", this, &FGMetarCtrl::get_valid );
fgTie("/environment/params/metar-updates-environment", this, &FGMetarCtrl::get_enabled, &FGMetarCtrl::set_enabled );
fgTie("/environment/params/metar-updates-winds-aloft", this, &FGMetarCtrl::get_setup_winds_aloft, &FGMetarCtrl::set_setup_winds_aloft );
fgTie("/environment/metar/valid", this, &FGMetarCtrl::get_valid );
fgTie("/environment/params/metar-updates-environment", this, &FGMetarCtrl::get_enabled, &FGMetarCtrl::set_enabled );
fgTie("/environment/params/metar-updates-winds-aloft", this, &FGMetarCtrl::get_setup_winds_aloft, &FGMetarCtrl::set_setup_winds_aloft );
}
void FGMetarCtrl::unbind ()
{
fgUntie("/environment/metar/valid");
fgUntie("/environment/params/metar-updates-environment");
fgUntie("/environment/params/metar-updates-winds-aloft");
fgUntie("/environment/metar/valid");
fgUntie("/environment/params/metar-updates-environment");
fgUntie("/environment/params/metar-updates-winds-aloft");
}
// use a "command" to set station temp at station elevation
@ -369,9 +388,11 @@ static void setupWindBranch( string branchName, double dir, double speed, double
}
}
static void setupWind( bool setup_aloft, double dir, double speed, double gust )
static void setupWind( bool setup_boundary, bool setup_aloft, double dir, double speed, double gust )
{
setupWindBranch( "boundary", dir, speed, gust );
if( setup_boundary )
setupWindBranch( "boundary", dir, speed, gust );
if( setup_aloft )
setupWindBranch( "aloft", dir, speed, gust );
}
@ -390,6 +411,7 @@ void
FGMetarCtrl::init ()
{
first_update = true;
wind_interpolation_required = true;
}
void
@ -398,12 +420,25 @@ FGMetarCtrl::reinit ()
init();
}
static inline double convert_to_360( double d )
{
if( d < 0.0 ) return d + 360.0;
if( d >= 360.0 ) return d - 360.0;
return d;
}
static inline double convert_to_180( double d )
{
return d > 180.0 ? d - 360.0 : d;
}
void
FGMetarCtrl::update(double dt)
{
if( dt <= 0 || !metar_valid ||!enabled)
return;
windModulator->update(dt);
// Interpolate the current configuration closer to the actual METAR
bool reinit_required = false;
@ -413,7 +448,7 @@ FGMetarCtrl::update(double dt)
double dir = base_wind_dir_n->getDoubleValue();
double speed = base_wind_speed_n->getDoubleValue();
double gust = gust_wind_speed_n->getDoubleValue();
setupWind(setup_winds_aloft, dir, speed, gust);
setupWind(true, setup_winds_aloft, dir, speed, gust);
double metarvis = min_visibility_n->getDoubleValue();
fgDefaultWeatherValue("visibility-m", metarvis);
@ -444,61 +479,92 @@ FGMetarCtrl::update(double dt)
layer_rebuild_required = true;
} else {
// Generate interpolated values between the METAR and the current
// configuration.
if( wind_interpolation_required ) {
// Generate interpolated values between the METAR and the current
// configuration.
// Pick up the METAR wind values and convert them into a vector.
double metar[2];
double metar_speed = base_wind_speed_n->getDoubleValue();
double metar_heading = base_wind_dir_n->getDoubleValue();
// Pick up the METAR wind values and convert them into a vector.
double metar[2];
double metar_speed = base_wind_speed_n->getDoubleValue();
double metar_heading = base_wind_dir_n->getDoubleValue();
metar[0] = metar_speed * sin(metar_heading * SG_DEGREES_TO_RADIANS );
metar[1] = metar_speed * cos(metar_heading * SG_DEGREES_TO_RADIANS);
metar[0] = metar_speed * sin(metar_heading * SG_DEGREES_TO_RADIANS );
metar[1] = metar_speed * cos(metar_heading * SG_DEGREES_TO_RADIANS);
// Convert the current wind values and convert them into a vector
double current[2];
double speed = boundary_wind_speed_n->getDoubleValue();
double dir_from = boundary_wind_from_heading_n->getDoubleValue();;
// Convert the current wind values and convert them into a vector
double current[2];
double speed = boundary_wind_speed_n->getDoubleValue();
double dir_from = boundary_wind_from_heading_n->getDoubleValue();;
current[0] = speed * sin(dir_from * SG_DEGREES_TO_RADIANS );
current[1] = speed * cos(dir_from * SG_DEGREES_TO_RADIANS );
current[0] = speed * sin(dir_from * SG_DEGREES_TO_RADIANS );
current[1] = speed * cos(dir_from * SG_DEGREES_TO_RADIANS );
// Determine the maximum component-wise value that the wind can change.
// First we determine the fraction in the X and Y component, then
// factor by the maximum wind change.
double x = fabs(current[0] - metar[0]);
double y = fabs(current[1] - metar[1]);
// Determine the maximum component-wise value that the wind can change.
// First we determine the fraction in the X and Y component, then
// factor by the maximum wind change.
double x = fabs(current[0] - metar[0]);
double y = fabs(current[1] - metar[1]);
// only interpolate if we have a difference
if (x + y > 0) {
double dx = x / (x + y);
double dy = 1 - dx;
// only interpolate if we have a difference
if (x + y > 0.01 ) {
double dx = x / (x + y);
double dy = 1 - dx;
double maxdx = dx * MaxWindChangeKtsSec;
double maxdy = dy * MaxWindChangeKtsSec;
double maxdx = dx * MaxWindChangeKtsSec;
double maxdy = dy * MaxWindChangeKtsSec;
// Interpolate each component separately.
current[0] = interpolate_val(current[0], metar[0], maxdx);
current[1] = interpolate_val(current[1], metar[1], maxdy);
// Interpolate each component separately.
current[0] = interpolate_val(current[0], metar[0], maxdx);
current[1] = interpolate_val(current[1], metar[1], maxdy);
// Now convert back to polar coordinates.
if ((current[0] == 0.0) && (current[1] == 0.0)) {
// Special case where there is no wind (otherwise atan2 barfs)
speed = 0.0;
} else {
// Some real wind to convert back from. Work out the speed
// and direction value in degrees.
speed = sqrt((current[0] * current[0]) + (current[1] * current[1]));
dir_from = (atan2(current[0], current[1]) * SG_RADIANS_TO_DEGREES );
// Now convert back to polar coordinates.
if ((current[0] == 0.0) && (current[1] == 0.0)) {
// Special case where there is no wind (otherwise atan2 barfs)
speed = 0.0;
} else {
// Some real wind to convert back from. Work out the speed
// and direction value in degrees.
speed = sqrt((current[0] * current[0]) + (current[1] * current[1]));
dir_from = (atan2(current[0], current[1]) * SG_RADIANS_TO_DEGREES );
// Normalize the direction.
if (dir_from < 0.0)
dir_from += 360.0;
// Normalize the direction.
if (dir_from < 0.0)
dir_from += 360.0;
SG_LOG( SG_GENERAL, SG_DEBUG, "Wind : " << dir_from << "@" << speed);
SG_LOG( SG_GENERAL, SG_DEBUG, "Wind : " << dir_from << "@" << speed);
}
double gust = gust_wind_speed_n->getDoubleValue();
setupWind(true, setup_winds_aloft, dir_from, speed, gust);
reinit_required = true;
} else {
wind_interpolation_required = false;
}
double gust = gust_wind_speed_n->getDoubleValue();
setupWind(setup_winds_aloft, dir_from, speed, gust);
} else { // if(wind_interpolation_required)
// interpolation of wind vector is finished, apply wind
// variations and gusts for the boundary layer only
// start with the main wind direction
double wind_dir = base_wind_dir_n->getDoubleValue();
double min = convert_to_180(base_wind_range_from_n->getDoubleValue());
double max = convert_to_180(base_wind_range_to_n->getDoubleValue());
if( max > min ) {
// if variable winds configured, modulate the wind direction
double f = windModulator->get_direction_offset_norm();
wind_dir = min+(max-min)*f;
double old = convert_to_180(boundary_wind_from_heading_n->getDoubleValue());
wind_dir = convert_to_360(fgGetLowPass(old, wind_dir, dt ));
}
// start with main wind speed
double wind_speed = base_wind_speed_n->getDoubleValue();
max = gust_wind_speed_n->getDoubleValue();
if( max > wind_speed ) {
// if gusts are configured, modulate wind magnitude
double f = windModulator->get_magnitude_factor_norm();
wind_speed = wind_speed+(max-wind_speed)*f;
wind_speed = fgGetLowPass(boundary_wind_speed_n->getDoubleValue(), wind_speed, dt );
}
setupWind(true, false, wind_dir, wind_speed, max);
reinit_required = true;
}
@ -595,6 +661,7 @@ FGMetarCtrl::update(double dt)
set_temp_at_altitude(temperature_n->getDoubleValue(), station_elevation_ft);
set_dewpoint_at_altitude(dewpoint_n->getDoubleValue(), station_elevation_ft);
//TODO: check if temperature/dewpoint have changed. This requires reinit.
// Force an update of the 3D clouds
if( layer_rebuild_required )
@ -629,6 +696,8 @@ void FGMetarCtrl::set_metar( const char * metar_string )
return;
}
wind_interpolation_required = true;
min_visibility_n->setDoubleValue( m->getMinVisibility().getVisibility_m() );
max_visibility_n->setDoubleValue( m->getMaxVisibility().getVisibility_m() );
@ -751,8 +820,7 @@ void MetarThread::run()
}
#endif
FGMetarFetcher::FGMetarFetcher()
:
FGMetarFetcher::FGMetarFetcher() :
#if defined(ENABLE_THREADS)
metar_thread(NULL),
#endif
@ -764,12 +832,12 @@ FGMetarFetcher::FGMetarFetcher()
{
longitude_n = fgGetNode( "/position/longitude-deg", true );
latitude_n = fgGetNode( "/position/latitude-deg", true );
enable_n = fgGetNode( "/environment/params/real-world-weather-fetch", true );
enable_n = fgGetNode( "/environment/params/real-world-weather-fetch", true );
proxy_host_n = fgGetNode("/sim/presets/proxy/host", true);
proxy_port_n = fgGetNode("/sim/presets/proxy/port", true);
proxy_auth_n = fgGetNode("/sim/presets/proxy/authentication", true);
max_age_n = fgGetNode("/environment/params/metar-max-age-min", true);
max_age_n = fgGetNode("/environment/params/metar-max-age-min", true);
output_n = fgGetNode("/environment/metar/data", true );
#if defined(ENABLE_THREADS)

238
src/Environment/environment_ctrl.hxx
View file

@ -36,6 +36,7 @@
#include <Navaids/positioned.hxx>
#include <Environment/environment.hxx>
#include "fgwind.hxx"
// forward decls
class SGPropertyNode;
@ -49,28 +50,28 @@ class FGEnvironmentCtrl : public SGSubsystem
public:
FGEnvironmentCtrl ();
virtual ~FGEnvironmentCtrl ();
FGEnvironmentCtrl ();
virtual ~FGEnvironmentCtrl ();
virtual void setEnvironment (FGEnvironment * environment);
virtual void setEnvironment (FGEnvironment * environment);
virtual const FGEnvironment * getEnvironment () const { return _environment; }
virtual const FGEnvironment * getEnvironment () const { return _environment; }
virtual void setLongitudeDeg (double lon_deg);
virtual void setLatitudeDeg (double lat_deg);
virtual void setElevationFt (double elev_ft);
virtual void setPosition (double lon_deg, double lat_deg, double elev_ft);
virtual void setLongitudeDeg (double lon_deg);
virtual void setLatitudeDeg (double lat_deg);
virtual void setElevationFt (double elev_ft);
virtual void setPosition (double lon_deg, double lat_deg, double elev_ft);
virtual double getLongitudeDeg () const { return _lon_deg; }
virtual double getLatitudeDeg () const { return _lat_deg; }
virtual double getElevationFt () const { return _elev_ft; }
virtual double getLongitudeDeg () const { return _lon_deg; }
virtual double getLatitudeDeg () const { return _lat_deg; }
virtual double getElevationFt () const { return _elev_ft; }
protected:
FGEnvironment * _environment;
double _lon_deg;
double _lat_deg;
double _elev_ft;
FGEnvironment * _environment;
double _lon_deg;
double _lat_deg;
double _elev_ft;
};
@ -82,31 +83,31 @@ protected:
class FGInterpolateEnvironmentCtrl : public FGEnvironmentCtrl
{
public:
FGInterpolateEnvironmentCtrl ();
virtual ~FGInterpolateEnvironmentCtrl ();
virtual void init ();
virtual void reinit ();
virtual void update (double delta_time_sec);
FGInterpolateEnvironmentCtrl ();
virtual ~FGInterpolateEnvironmentCtrl ();
virtual void init ();
virtual void reinit ();
virtual void update (double delta_time_sec);
private:
struct bucket {
double altitude_ft;
FGEnvironment environment;
bool operator< (const bucket &b) const;
// LessThan predicate for bucket pointers.
static bool lessThan(bucket *a, bucket *b);
};
struct bucket {
double altitude_ft;
FGEnvironment environment;
bool operator< (const bucket &b) const;
// LessThan predicate for bucket pointers.
static bool lessThan(bucket *a, bucket *b);
};
void read_table (const SGPropertyNode * node, std::vector<bucket *> &table);
void do_interpolate (std::vector<bucket *> &table, double altitude_ft,
FGEnvironment * environment);
void read_table (const SGPropertyNode * node, std::vector<bucket *> &table);
void do_interpolate (std::vector<bucket *> &table, double altitude_ft,
FGEnvironment * environment);
FGEnvironment env1, env2; // temporaries
FGEnvironment env1, env2; // temporaries
std::vector<bucket *> _boundary_table;
std::vector<bucket *> _aloft_table;
std::vector<bucket *> _boundary_table;
std::vector<bucket *> _aloft_table;
SGPropertyNode_ptr altitude_n;
SGPropertyNode_ptr altitude_agl_n;
@ -124,15 +125,15 @@ private:
class FGMetarCtrl : public SGSubsystem
{
public:
FGMetarCtrl (SGSubsystem * environmentCtrl);
virtual ~FGMetarCtrl ();
FGMetarCtrl (SGSubsystem * environmentCtrl);
virtual ~FGMetarCtrl ();
virtual void init ();
virtual void reinit ();
virtual void update (double delta_time_sec);
virtual void init ();
virtual void reinit ();
virtual void update (double delta_time_sec);
void set_metar( const char * metar );
const char * get_metar(void) const;
void set_metar( const char * metar );
const char * get_metar(void) const;
bool get_valid(void) const { return metar_valid; }
void set_enabled(bool _enabled) { enabled = _enabled; }
bool get_enabled(void) const { return enabled; }
@ -142,59 +143,62 @@ public:
private:
void bind();
void unbind();
bool metar_valid;
bool enabled;
SGSharedPtr<FGWindModulator> windModulator;
bool metar_valid;
bool enabled;
bool setup_winds_aloft;
bool first_update;
double station_elevation_ft;
string metar;
double interpolate_prop(const char * currentname, const char * requiredname, double dvalue);
double interpolate_val(double currentval, double requiredval, double dvalue);
const double EnvironmentUpdatePeriodSec; // Seconds between interpolations
const double MaxWindChangeKtsSec; // Max wind change in kts/sec
const double MaxVisChangePercentSec; // Max visibility change in %/sec
const double MaxPressureChangeInHgSec; // Max pressure change in InHg/sec
const double MaxCloudAltitudeChangeFtSec; // Max cloud altitude change in ft/s
const double MaxCloudThicknessChangeFtSec; // Max cloud thickness change in ft/s
const double MaxCloudInterpolationHeightFt; // Max distance from aircraft to
// interpolate at. Any cloud
// changes above this height
// difference are not interpolated
const double MaxCloudInterpolationDeltaFt; // Max difference in altitude to
// interpolate. Any cloud changing height
// by more than this value is not
// interpolated
bool first_update;
bool wind_interpolation_required;
double station_elevation_ft;
string metar;
double interpolate_prop(const char * currentname, const char * requiredname, double dvalue);
double interpolate_val(double currentval, double requiredval, double dvalue);
const double EnvironmentUpdatePeriodSec; // Seconds between interpolations
const double MaxWindChangeKtsSec; // Max wind change in kts/sec
const double MaxVisChangePercentSec; // Max visibility change in %/sec
const double MaxPressureChangeInHgSec; // Max pressure change in InHg/sec
const double MaxCloudAltitudeChangeFtSec; // Max cloud altitude change in ft/s
const double MaxCloudThicknessChangeFtSec; // Max cloud thickness change in ft/s
const double MaxCloudInterpolationHeightFt; // Max distance from aircraft to
// interpolate at. Any cloud
// changes above this height
// difference are not interpolated
const double MaxCloudInterpolationDeltaFt; // Max difference in altitude to
// interpolate. Any cloud changing height
// by more than this value is not
// interpolated
SGSubsystem * _environmentCtrl;
SGSubsystem * _environmentCtrl;
SGPropertyNode_ptr metar_base_n;
SGPropertyNode_ptr station_id_n;
SGPropertyNode_ptr station_elevation_n;
SGPropertyNode_ptr min_visibility_n;
SGPropertyNode_ptr max_visibility_n;
SGPropertyNode_ptr base_wind_range_from_n;
SGPropertyNode_ptr base_wind_range_to_n;
SGPropertyNode_ptr base_wind_dir_n;
SGPropertyNode_ptr base_wind_speed_n;
SGPropertyNode_ptr gust_wind_speed_n;
SGPropertyNode_ptr temperature_n;
SGPropertyNode_ptr dewpoint_n;
SGPropertyNode_ptr humidity_n;
SGPropertyNode_ptr pressure_n;
SGPropertyNode_ptr clouds_n;
SGPropertyNode_ptr environment_clouds_n;
SGPropertyNode_ptr rain_n;
SGPropertyNode_ptr hail_n;
SGPropertyNode_ptr snow_n;
SGPropertyNode_ptr snow_cover_n;
SGPropertyNode_ptr ground_elevation_n;
SGPropertyNode_ptr longitude_n;
SGPropertyNode_ptr latitude_n;
SGPropertyNode_ptr metar_base_n;
SGPropertyNode_ptr station_id_n;
SGPropertyNode_ptr station_elevation_n;
SGPropertyNode_ptr min_visibility_n;
SGPropertyNode_ptr max_visibility_n;
SGPropertyNode_ptr base_wind_range_from_n;
SGPropertyNode_ptr base_wind_range_to_n;
SGPropertyNode_ptr base_wind_dir_n;
SGPropertyNode_ptr base_wind_speed_n;
SGPropertyNode_ptr gust_wind_speed_n;
SGPropertyNode_ptr temperature_n;
SGPropertyNode_ptr dewpoint_n;
SGPropertyNode_ptr humidity_n;
SGPropertyNode_ptr pressure_n;
SGPropertyNode_ptr clouds_n;
SGPropertyNode_ptr environment_clouds_n;
SGPropertyNode_ptr rain_n;
SGPropertyNode_ptr hail_n;
SGPropertyNode_ptr snow_n;
SGPropertyNode_ptr snow_cover_n;
SGPropertyNode_ptr ground_elevation_n;
SGPropertyNode_ptr longitude_n;
SGPropertyNode_ptr latitude_n;
SGPropertyNode_ptr boundary_wind_speed_n;
SGPropertyNode_ptr boundary_wind_from_heading_n;
SGPropertyNode_ptr boundary_visibility_n;
SGPropertyNode_ptr boundary_sea_level_pressure_n;
SGPropertyNode_ptr boundary_wind_speed_n;
SGPropertyNode_ptr boundary_wind_from_heading_n;
SGPropertyNode_ptr boundary_visibility_n;
SGPropertyNode_ptr boundary_sea_level_pressure_n;
private:
};
@ -205,45 +209,45 @@ private:
class FGMetarFetcher : public SGSubsystem
{
public:
FGMetarFetcher();
virtual ~FGMetarFetcher();
FGMetarFetcher();
virtual ~FGMetarFetcher();
virtual void init ();
virtual void reinit ();
virtual void update (double delta_time_sec);
virtual void init ();
virtual void reinit ();
virtual void update (double delta_time_sec);
private:
friend class MetarThread;
friend class MetarThread;
#if defined(ENABLE_THREADS)
/**
* FIFO queue which holds a pointer to the metar requests.
*/
SGBlockingQueue <string> request_queue;
/**
* FIFO queue which holds a pointer to the metar requests.
*/
SGBlockingQueue <string> request_queue;
OpenThreads::Thread * metar_thread;
OpenThreads::Thread * metar_thread;
#endif
void fetch( const string & id );
void fetch( const string & id );
SGPropertyNode_ptr enable_n;
SGPropertyNode_ptr enable_n;
SGPropertyNode_ptr longitude_n;
SGPropertyNode_ptr latitude_n;
SGPropertyNode_ptr longitude_n;
SGPropertyNode_ptr latitude_n;
SGPropertyNode_ptr proxy_host_n;
SGPropertyNode_ptr proxy_port_n;
SGPropertyNode_ptr proxy_auth_n;
SGPropertyNode_ptr max_age_n;
SGPropertyNode_ptr proxy_host_n;
SGPropertyNode_ptr proxy_port_n;
SGPropertyNode_ptr proxy_auth_n;
SGPropertyNode_ptr max_age_n;
SGPropertyNode_ptr output_n;
SGPropertyNode_ptr output_n;
string current_airport_id;
double fetch_timer;
double search_timer;
double error_timer;
string current_airport_id;
double fetch_timer;
double search_timer;
double error_timer;
long _stale_count;
long _error_count;
long _stale_count;
long _error_count;
};

6
src/Environment/environment_mgr.cxx
View file

@ -52,12 +52,12 @@ FGEnvironmentMgr::FGEnvironmentMgr ()
_controller = new FGInterpolateEnvironmentCtrl;
_controller->setEnvironment(_environment);
set_subsystem("controller", _controller, 0.5);
set_subsystem("controller", _controller, 0.1 );
fgClouds = new FGClouds();
_metarcontroller = new FGMetarCtrl(_controller);
set_subsystem("metarcontroller", _metarcontroller, 0.25 );
_metarcontroller = new FGMetarCtrl(_controller );
set_subsystem("metarcontroller", _metarcontroller, 0.1 );
_metarfetcher = new FGMetarFetcher();
set_subsystem("metarfetcher", _metarfetcher, 1.0 );

36
src/Environment/fgwind.cxx Normal file
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@ -0,0 +1,36 @@
#include "fgwind.hxx"
#include <math.h>
#include <stdio.h>
FGWindModulator::FGWindModulator() :
direction_offset_norm(0.0),
magnitude_factor_norm(1.0)
{
}
FGWindModulator::~FGWindModulator()
{
}
FGBasicWindModulator::FGBasicWindModulator() :
elapsed(0.0),
direction_period(17),
speed_period(1)
{
}
FGBasicWindModulator::~FGBasicWindModulator()
{
}
void FGBasicWindModulator::update( double dt)
{
elapsed += dt;
double t = elapsed/direction_period;
direction_offset_norm = (sin(t)*sin(2*t)+sin(t/3)) / 1.75;
t = elapsed/speed_period;
magnitude_factor_norm = sin(t)* sin(5*direction_offset_norm*direction_offset_norm);;
magnitude_factor_norm = magnitude_factor_norm < 0 ? 0 : magnitude_factor_norm;
}

40
src/Environment/fgwind.hxx Normal file
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@ -0,0 +1,40 @@
#ifndef _FGWIND_HXX
#include <simgear/structure/SGReferenced.hxx>
////////////////////////////////////////////////////////////////////////
// A Wind Modulator interface, generates gusts and wind direction changes
////////////////////////////////////////////////////////////////////////
class FGWindModulator : public SGReferenced {
public:
FGWindModulator();
virtual ~FGWindModulator();
virtual void update( double dt ) = 0;
double get_direction_offset_norm() const { return direction_offset_norm; }
double get_magnitude_factor_norm() const { return magnitude_factor_norm; }
protected:
double direction_offset_norm;
double magnitude_factor_norm;
};
////////////////////////////////////////////////////////////////////////
// A Basic Wind Modulator, implementation of FGWindModulator
// direction and magnitude variations are based on simple sin functions
////////////////////////////////////////////////////////////////////////
class FGBasicWindModulator : public FGWindModulator {
public:
FGBasicWindModulator();
virtual ~FGBasicWindModulator();
virtual void update( double dt );
void set_direction_period( double _direction_period ) { direction_period = _direction_period; }
double get_direction_period() const { return direction_period; }
void set_speed_period( double _speed_period ) { speed_period = _speed_period; }
double get_speed_period() const{ return speed_period; }
private:
double elapsed;
double direction_period;
double speed_period;
};
#endif