Public Member Functions
	SolarPosition (helios::Context *context_ptr)
	Solar position model default constructor. Initializes location based on the location set in the Context.

	SolarPosition (float UTC_hrs, float latitude_deg, float longitude_deg, helios::Context *context_ptr)
	Solar position model constructor.

helios::Time	getSunriseTime () const
	Get the approximate time of sunrise at the current location.

helios::Time	getSunsetTime () const
	Get the approximate time of sunset at the current location.

float	getSunElevation () const
	Get the current sun elevation angle in radians for the current location. The sun angle is computed based on the current time and date set in the Helios context.

float	getSunZenith () const
	Get the current sun zenithal angle in radians for the current location. The sun angle is computed based on the current time and date set in the Helios context.

float	getSunAzimuth () const
	Get the current sun azimuthal angle in radians for the current location. The sun angle is computed based on the current time and date set in the Helios context.

helios::vec3	getSunDirectionVector () const
	Get a unit vector pointing toward the sun for the current location. The sun angle is computed based on the current time and date set in the Helios context.

helios::SphericalCoord	getSunDirectionSpherical () const
	Get a spherical coordinate vector pointing toward the sun for the current location. The sun angle is computed based on the current time and date set in the Helios context.

void	setSunDirection (const helios::SphericalCoord &sundirection)
	Override solar position calculation based on time in the Context by using a prescribed solar position.

float	getSolarFlux (float pressure_Pa, float temperature_K, float humidity_rel, float turbidity) const
	Get the solar radiation flux perpendicular to the sun direction.

float	getSolarFluxPAR (float pressure_Pa, float temperature_K, float humidity_rel, float turbidity) const
	Get the photosynthetically active (PAR) component of solar radiation flux perpendicular to the sun direction.

float	getSolarFluxNIR (float pressure_Pa, float temperature_K, float humidity_rel, float turbidity) const
	Get the near-infrared (NIR) component of solar radiation flux perpendicular to the sun direction.

float	getDiffuseFraction (float pressure_Pa, float temperature_K, float humidity_rel, float turbidity) const
	Get the fraction of solar radiation flux that is diffuse.

float	getAmbientLongwaveFlux (float temperature_K, float humidity_rel) const
	Calculate the ambient (sky) longwave radiation flux.

float	calibrateTurbidityFromTimeseries (const std::string &timeseries_shortwave_flux_label_Wm2) const
	Calculate the turbidity value based on a timeseries of net radiation measurements.

void	enableCloudCalibration (const std::string &timeseries_shortwave_flux_label_Wm2)
	Enable calibration of solar flux and diffuse fraction when possibility of clouds are present against measured solar flux data.

void	disableCloudCalibration ()
	Disable calibration of solar flux and diffuse fraction for clouds.

void	setAtmosphericConditions (float pressure_Pa, float temperature_K, float humidity_rel, float turbidity)
	Set atmospheric conditions globally in the Context.

void	getAtmosphericConditions (float &pressure_Pa, float &temperature_K, float &humidity_rel, float &turbidity) const
	Get atmospheric conditions from the Context.

float	getSolarFlux () const
	Get the solar radiation flux perpendicular to the sun direction using atmospheric conditions from the Context.

float	getSolarFluxPAR () const
	Get the photosynthetically active (PAR) component of solar radiation flux perpendicular to the sun direction using atmospheric conditions from the Context.

float	getSolarFluxNIR () const
	Get the near-infrared (NIR) component of solar radiation flux perpendicular to the sun direction using atmospheric conditions from the Context.

float	getDiffuseFraction () const
	Get the fraction of solar radiation flux that is diffuse using atmospheric conditions from the Context.

float	getAmbientLongwaveFlux () const
	Calculate the ambient (sky) longwave radiation flux using atmospheric conditions from the Context.

void	calculateDirectSolarSpectrum (const std::string &label, float resolution_nm=1.0f)
	Calculate direct beam solar spectrum and store in global data.

void	calculateDiffuseSolarSpectrum (const std::string &label, float resolution_nm=1.0f)
	Calculate diffuse solar spectrum and store in global data.

void	calculateGlobalSolarSpectrum (const std::string &label, float resolution_nm=1.0f)
	Calculate global (total) solar spectrum and store in global data.

void	enablePragueSkyModel ()
	Enable Prague sky model for atmospheric sky radiance computation.

bool	isPragueSkyModelEnabled () const
	Check if Prague sky model is enabled.

void	updatePragueSkyModel (float ground_albedo=0.33f)
	Update Prague sky model and store spectral-angular parameters in Context.

bool	pragueSkyModelNeedsUpdate (float ground_albedo=0.33f, float sun_tolerance=0.01f, float turbidity_tolerance=0.02f, float albedo_tolerance=0.05f) const
	Check if Prague sky model update is needed based on changed conditions.

Static Public Member Functions
static int	selfTest (int argc=0, char **argv=nullptr)
	Function to perform a self-test of model functions.

Detailed Description

Definition at line 25 of file SolarPosition.h.

Constructor & Destructor Documentation

◆ SolarPosition() [1/2]

SolarPosition::SolarPosition ( helios::Context * context_ptr )

explicit

Solar position model default constructor. Initializes location based on the location set in the Context.

Parameters

[in] context_ptr Pointer to the Helios context

Definition at line 22 of file SolarPosition.cpp.

◆ SolarPosition() [2/2]

SolarPosition::SolarPosition	(	float	UTC_hrs,
		float	latitude_deg,
		float	longitude_deg,
		helios::Context *	context_ptr
	)

Solar position model constructor.

Parameters

[in]	context_ptr	Pointer to the Helios context
[in]	UTC_hrs	Hours from Coordinated Universal Time (UTC) for location of interest. Convention is that UTC is positive moving Westward.
[in]	latitude_deg	Latitude in degrees for location of interest. Convention is latitude is positive for Northern hemisphere.
[in]	longitude_deg	Longitude in degrees for location of interest. Convention is longitude is positive for Western hemisphere.

Definition at line 30 of file SolarPosition.cpp.

Member Function Documentation

◆ calculateDiffuseSolarSpectrum()

void SolarPosition::calculateDiffuseSolarSpectrum	(	const std::string &	label,
		float	resolution_nm = `1.0f`
	)

Calculate diffuse solar spectrum and store in global data.

Parameters

[in]	label	User-defined label for storing spectral data in Context global data
[in]	resolution_nm	Wavelength resolution in nm (default: 1 nm). Must be >= 1 nm and <= 2300 nm.

Note: Computes diffuse spectral irradiance on horizontal surface from 300-2600 nm using the SSolar-GOA model (Cachorro et al. 2022).; Stores result in Context global data as std::vector<helios::vec2> (wavelength_nm, W/m²/nm) with the specified label.

Definition at line 1013 of file SolarPosition.cpp.

◆ calculateDirectSolarSpectrum()

void SolarPosition::calculateDirectSolarSpectrum	(	const std::string &	label,
		float	resolution_nm = `1.0f`
	)

Calculate direct beam solar spectrum and store in global data.

Parameters

[in]	label	User-defined label for storing spectral data in Context global data
[in]	resolution_nm	Wavelength resolution in nm (default: 1 nm). Must be >= 1 nm and <= 2300 nm.

Note: Computes spectral irradiance normal to sun direction from 300-2600 nm using the SSolar-GOA model (Cachorro et al. 2022).; Stores result in Context global data as std::vector<helios::vec2> (wavelength_nm, W/m²/nm) with the specified label.

Definition at line 1007 of file SolarPosition.cpp.

◆ calculateGlobalSolarSpectrum()

void SolarPosition::calculateGlobalSolarSpectrum	(	const std::string &	label,
		float	resolution_nm = `1.0f`
	)

Calculate global (total) solar spectrum and store in global data.

Parameters

[in]	label	User-defined label for storing spectral data in Context global data
[in]	resolution_nm	Wavelength resolution in nm (default: 1 nm). Must be >= 1 nm and <= 2300 nm.

Note: Computes global spectral irradiance on horizontal surface from 300-2600 nm using the SSolar-GOA model (Cachorro et al. 2022).; Stores result in Context global data as std::vector<helios::vec2> (wavelength_nm, W/m²/nm) with the specified label.

Definition at line 1019 of file SolarPosition.cpp.

◆ calibrateTurbidityFromTimeseries()

float SolarPosition::calibrateTurbidityFromTimeseries ( const std::string & timeseries_shortwave_flux_label_Wm2 ) const

Calculate the turbidity value based on a timeseries of net radiation measurements.

Parameters

[in] timeseries_shortwave_flux_label_Wm2 Label of the timeseries variable in the Helios context that contains the net radiation flux measurements

Returns: Turbidity value

Note: The net radiation flux measurements contained in the timeseries should be global shortwave radiation flux on a horizontal plane in W/m^2. The data should contain at least one day with clear sky conditions.

Definition at line 390 of file SolarPosition.cpp.

◆ disableCloudCalibration()

void SolarPosition::disableCloudCalibration ( )

Disable calibration of solar flux and diffuse fraction for clouds.

Definition at line 442 of file SolarPosition.cpp.

◆ enableCloudCalibration()

void SolarPosition::enableCloudCalibration ( const std::string & timeseries_shortwave_flux_label_Wm2 )

Enable calibration of solar flux and diffuse fraction when possibility of clouds are present against measured solar flux data.

Parameters

[in] timeseries_shortwave_flux_label_Wm2 Label for timeseries data field containing measured total shortwave flux data (W/m^2).

Definition at line 433 of file SolarPosition.cpp.

◆ enablePragueSkyModel()

void SolarPosition::enablePragueSkyModel ( )

Enable Prague sky model for atmospheric sky radiance computation.

Note: The Prague Sky Model computes physically-based sky radiance distributions accounting for Rayleigh and Mie scattering.; Uses the reduced dataset (360-1480 nm, ~27 MB) from plugins/solarposition/lib/prague_sky_model/PragueSkyModelReduced.dat; Once enabled, call updatePragueSkyModel() to compute and store spectral-angular parameters in Context global data.

Definition at line 1027 of file SolarPosition.cpp.

◆ getAmbientLongwaveFlux() [1/2]

float SolarPosition::getAmbientLongwaveFlux ( ) const

Calculate the ambient (sky) longwave radiation flux using atmospheric conditions from the Context.

Note: The longwave flux model is based on Prata (1996).; Atmospheric conditions must be set using setAtmosphericConditions() before calling this method. If not set, default values are used with a warning.

Returns: Ambient longwave flux in W/m^2

Definition at line 548 of file SolarPosition.cpp.

◆ getAmbientLongwaveFlux() [2/2]

float SolarPosition::getAmbientLongwaveFlux	(	float	temperature_K,
		float	humidity_rel
	)		const

Calculate the ambient (sky) longwave radiation flux.

Parameters

[in]	temperature_K	Air temperature near the ground surface in Kelvin
[in]	humidity_rel	Air relative humidity near the ground surface

Returns: Ambient longwave flux in W/m^2

Note: The longwave flux model is based on Prata (1996).

Deprecated:: Use setAtmosphericConditions() and the parameter-free getAmbientLongwaveFlux() instead

Definition at line 359 of file SolarPosition.cpp.

◆ getAtmosphericConditions()

void SolarPosition::getAtmosphericConditions	(	float &	pressure_Pa,
		float &	temperature_K,
		float &	humidity_rel,
		float &	turbidity
	)		const

Get atmospheric conditions from the Context.

Parameters

[out]	pressure_Pa	Atmospheric pressure near ground surface in Pascals
[out]	temperature_K	Air temperature near the ground surface in Kelvin
[out]	humidity_rel	Air relative humidity near the ground surface
[out]	turbidity	Ångström's aerosol turbidity coefficient (β), representing aerosol optical depth (AOD) at 500 nm

Note: If atmospheric conditions have not been set via setAtmosphericConditions(), reasonable defaults are used: pressure=101325 Pa (1 atm), temperature=300 K (27°C), humidity=0.5 (50%), turbidity=0.02 (clear sky AOD)

Definition at line 468 of file SolarPosition.cpp.

◆ getDiffuseFraction() [1/2]

float SolarPosition::getDiffuseFraction ( ) const

Get the fraction of solar radiation flux that is diffuse using atmospheric conditions from the Context.

Note: Atmospheric conditions must be set using setAtmosphericConditions() before calling this method. If not set, default values are used with a warning.

Returns: Fraction of global radiation that is diffuse

Definition at line 536 of file SolarPosition.cpp.

◆ getDiffuseFraction() [2/2]

float SolarPosition::getDiffuseFraction	(	float	pressure_Pa,
		float	temperature_K,
		float	humidity_rel,
		float	turbidity
	)		const

Get the fraction of solar radiation flux that is diffuse.

Parameters

[in]	pressure_Pa	Atmospheric pressure near ground surface in Pascals
[in]	temperature_K	Air temperature near the ground surface in Kelvin
[in]	humidity_rel	Air relative humidity near the ground surface
[in]	turbidity	Ångström's aerosol turbidity coefficient (AOD at 500 nm). Typical values: 0.02 (very clear), 0.05 (clear), 0.1 (hazy)

Returns: Fraction of global radiation that is diffuse

Deprecated:: Use setAtmosphericConditions() and the parameter-free getDiffuseFraction() instead

Definition at line 217 of file SolarPosition.cpp.

◆ getSolarFlux() [1/2]

float SolarPosition::getSolarFlux ( ) const

Get the solar radiation flux perpendicular to the sun direction using atmospheric conditions from the Context.

Note: The flux given by this function is the flux normal to the sun direction. To get the flux on a horizontal surface, multiply the returned value by cos(theta), where theta can be found by calling the getSunZenith() function.; The solar flux model is based on Gueymard (2008).; Atmospheric conditions must be set using setAtmosphericConditions() before calling this method. If not set, default values are used with a warning.

Returns: Global solar radiation flux NORMAL TO THE SUN DIRECTION in W/m^2

Definition at line 499 of file SolarPosition.cpp.

◆ getSolarFlux() [2/2]

float SolarPosition::getSolarFlux	(	float	pressure_Pa,
		float	temperature_K,
		float	humidity_rel,
		float	turbidity
	)		const

Get the solar radiation flux perpendicular to the sun direction.

Parameters

[in]	pressure_Pa	Atmospheric pressure near ground surface in Pascals
[in]	temperature_K	Air temperature near the ground surface in Kelvin
[in]	humidity_rel	Air relative humidity near the ground surface
[in]	turbidity	Ångström's aerosol turbidity coefficient (AOD at 500 nm). Typical values: 0.02 (very clear), 0.05 (clear), 0.1 (hazy)

Note: The flux given by this function is the flux normal to the sun direction. To get the flux on a horizontal surface, multiply the returned value by cos(theta), where theta can be found by calling the getSunZenith() function.; The solar flux model is based on Gueymard (2008).

Returns: Global solar radiation flux NORMAL TO THE SUN DIRECTION in W/m^2

Deprecated:: Use setAtmosphericConditions() and the parameter-free getSolarFlux() instead

Definition at line 186 of file SolarPosition.cpp.

◆ getSolarFluxNIR() [1/2]

float SolarPosition::getSolarFluxNIR ( ) const

Get the near-infrared (NIR) component of solar radiation flux perpendicular to the sun direction using atmospheric conditions from the Context.

Note: The flux given by this function is the flux normal to the sun direction. To get the flux on a horizontal surface, multiply the returned value by cos(theta), where theta can be found by calling the getSunZenith() function.; The solar flux model is based on Gueymard (2008).; Atmospheric conditions must be set using setAtmosphericConditions() before calling this method. If not set, default values are used with a warning.

Returns: NIR component of solar radiation flux NORMAL TO THE SUN DIRECTION in W/m^2

Definition at line 524 of file SolarPosition.cpp.

◆ getSolarFluxNIR() [2/2]

float SolarPosition::getSolarFluxNIR	(	float	pressure_Pa,
		float	temperature_K,
		float	humidity_rel,
		float	turbidity
	)		const

Get the near-infrared (NIR) component of solar radiation flux perpendicular to the sun direction.

Parameters

[in]	pressure_Pa	Atmospheric pressure near ground surface in Pascals
[in]	temperature_K	Air temperature near the ground surface in Kelvin
[in]	humidity_rel	Air relative humidity near the ground surface
[in]	turbidity	Ångström's aerosol turbidity coefficient (AOD at 500 nm). Typical values: 0.02 (very clear), 0.05 (clear), 0.1 (hazy)

Note: The flux given by this function is the flux normal to the sun direction. To get the flux on a horizontal surface, multiply the returned value by cos(theta), where theta can be found by calling the getSunZenith() function.; The solar flux model is based on Gueymard (2008).

Returns: Global solar radiation flux NORMAL TO THE SUN DIRECTION in W/m^2

Deprecated:: Use setAtmosphericConditions() and the parameter-free getSolarFluxNIR() instead

Definition at line 207 of file SolarPosition.cpp.

◆ getSolarFluxPAR() [1/2]

float SolarPosition::getSolarFluxPAR ( ) const

Get the photosynthetically active (PAR) component of solar radiation flux perpendicular to the sun direction using atmospheric conditions from the Context.

Note: The flux given by this function is the flux normal to the sun direction. To get the flux on a horizontal surface, multiply the returned value by cos(theta), where theta can be found by calling the getSunZenith() function.; The solar flux model is based on Gueymard (2008).; Atmospheric conditions must be set using setAtmosphericConditions() before calling this method. If not set, default values are used with a warning.

Returns: PAR component of solar radiation flux NORMAL TO THE SUN DIRECTION in W/m^2

Definition at line 512 of file SolarPosition.cpp.

◆ getSolarFluxPAR() [2/2]

float SolarPosition::getSolarFluxPAR	(	float	pressure_Pa,
		float	temperature_K,
		float	humidity_rel,
		float	turbidity
	)		const

Get the photosynthetically active (PAR) component of solar radiation flux perpendicular to the sun direction.

Parameters

[in]	pressure_Pa	Atmospheric pressure near ground surface in Pascals
[in]	temperature_K	Air temperature near the ground surface in Kelvin
[in]	humidity_rel	Air relative humidity near the ground surface
[in]	turbidity	Ångström's aerosol turbidity coefficient (AOD at 500 nm). Typical values: 0.02 (very clear), 0.05 (clear), 0.1 (hazy)

Note: The flux given by this function is the flux normal to the sun direction. To get the flux on a horizontal surface, multiply the returned value by cos(theta), where theta can be found by calling the getSunZenith() function.; The solar flux model is based on Gueymard (2008).

Returns: Global solar radiation flux NORMAL TO THE SUN DIRECTION in W/m^2

Deprecated:: Use setAtmosphericConditions() and the parameter-free getSolarFluxPAR() instead

Definition at line 197 of file SolarPosition.cpp.

◆ getSunAzimuth()

float SolarPosition::getSunAzimuth ( ) const

Get the current sun azimuthal angle in radians for the current location. The sun angle is computed based on the current time and date set in the Helios context.

Definition at line 151 of file SolarPosition.cpp.

◆ getSunDirectionSpherical()

SphericalCoord SolarPosition::getSunDirectionSpherical ( ) const

Get a spherical coordinate vector pointing toward the sun for the current location. The sun angle is computed based on the current time and date set in the Helios context.

Definition at line 171 of file SolarPosition.cpp.

◆ getSunDirectionVector()

vec3 SolarPosition::getSunDirectionVector ( ) const

Get a unit vector pointing toward the sun for the current location. The sun angle is computed based on the current time and date set in the Helios context.

Definition at line 161 of file SolarPosition.cpp.

◆ getSunElevation()

float SolarPosition::getSunElevation ( ) const

Get the current sun elevation angle in radians for the current location. The sun angle is computed based on the current time and date set in the Helios context.

Definition at line 131 of file SolarPosition.cpp.

◆ getSunriseTime()

Time SolarPosition::getSunriseTime ( ) const

Get the approximate time of sunrise at the current location.

Definition at line 95 of file SolarPosition.cpp.

◆ getSunsetTime()

Time SolarPosition::getSunsetTime ( ) const

Get the approximate time of sunset at the current location.

Definition at line 113 of file SolarPosition.cpp.

◆ getSunZenith()

float SolarPosition::getSunZenith ( ) const

Get the current sun zenithal angle in radians for the current location. The sun angle is computed based on the current time and date set in the Helios context.

Definition at line 141 of file SolarPosition.cpp.

◆ isPragueSkyModelEnabled()

bool SolarPosition::isPragueSkyModelEnabled ( ) const

Check if Prague sky model is enabled.

Returns: True if Prague model has been enabled via enablePragueSkyModel()

Definition at line 1046 of file SolarPosition.cpp.

◆ pragueSkyModelNeedsUpdate()

bool SolarPosition::pragueSkyModelNeedsUpdate	(	float	ground_albedo = `0.33f`,
		float	sun_tolerance = `0.01f`,
		float	turbidity_tolerance = `0.02f`,
		float	albedo_tolerance = `0.05f`
	)		const

Check if Prague sky model update is needed based on changed conditions.

Parameters

[in]	ground_albedo	Current ground albedo
[in]	sun_tolerance	Threshold for sun direction changes (default: 0.01 ≈ 0.57°)
[in]	turbidity_tolerance	Relative threshold for turbidity (default: 0.02 = 2%)
[in]	albedo_tolerance	Threshold for albedo changes (default: 0.05 = 5%)

Returns: True if updatePragueSkyModel() should be called

Note: This method enables lazy evaluation to avoid expensive Prague updates when conditions haven't changed significantly.; Reads turbidity from Context atmospheric conditions for comparison.

Definition at line 1123 of file SolarPosition.cpp.

◆ selfTest()

int SolarPosition::selfTest	(	int	argc = `0`,
		char **	argv = `nullptr`
	)

static

Function to perform a self-test of model functions.

Definition at line 563 of file selfTest.cpp.

◆ setAtmosphericConditions()

void SolarPosition::setAtmosphericConditions	(	float	pressure_Pa,
		float	temperature_K,
		float	humidity_rel,
		float	turbidity
	)

Set atmospheric conditions globally in the Context.

Parameters

[in]	pressure_Pa	Atmospheric pressure near ground surface in Pascals (must be > 0)
[in]	temperature_K	Air temperature near the ground surface in Kelvin (must be > 0)
[in]	humidity_rel	Air relative humidity near the ground surface (must be between 0 and 1)
[in]	turbidity	Ångström's aerosol turbidity coefficient (β), representing aerosol optical depth (AOD) at 500 nm reference wavelength (must be >= 0). Typical values: 0.02 (very clear sky), 0.05 (clear sky), 0.1 (light haze), 0.2-0.3 (hazy), >0.4 (very hazy/polluted). Note: This is NOT Linke turbidity, which uses a different scale (typically 2-6).

Note: This method sets global data in the Context with labels: atmosphere_pressure_Pa, atmosphere_temperature_K, atmosphere_humidity_rel, atmosphere_turbidity; Input values are validated. Invalid values will throw helios_runtime_error.

Definition at line 446 of file SolarPosition.cpp.

◆ setSunDirection()

void SolarPosition::setSunDirection ( const helios::SphericalCoord & sundirection )

Override solar position calculation based on time in the Context by using a prescribed solar position.

Parameters

[in] sundirection SphericalCoord giving the direction of the sun

Definition at line 181 of file SolarPosition.cpp.

◆ updatePragueSkyModel()

void SolarPosition::updatePragueSkyModel ( float ground_albedo = 0.33f )

Update Prague sky model and store spectral-angular parameters in Context.

Parameters

[in] ground_albedo Ground reflectance [0-1] (default: 0.33 for vegetation)

Note

Must call after solar position changes or atmospheric conditions change.

Reads turbidity from Context atmospheric conditions (set via setAtmosphericConditions). If not set, uses default 0.02 (clear sky).

Computationally intensive (~1100 model queries with OpenMP parallelization). Use lazy evaluation via pragueSkyModelNeedsUpdate() to avoid unnecessary updates.

Stores the following in Context global data:

"prague_sky_spectral_params": vec<float> of size 1350 (225 wavelengths × 6 parameters)
"prague_sky_sun_direction": vec3 sun direction
"prague_sky_visibility_km": float visibility in km
"prague_sky_ground_albedo": float ground albedo
"prague_sky_valid": int validity flag (1=valid, 0=invalid)

Definition at line 1050 of file SolarPosition.cpp.

The documentation for this class was generated from the following files:

plugins/solarposition/include/SolarPosition.h
plugins/solarposition/src/SolarPosition.cpp
plugins/solarposition/tests/selfTest.cpp

	1.3.64

Public Member Functions

Static Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ SolarPosition() [1/2]

◆ SolarPosition() [2/2]

Member Function Documentation

◆ calculateDiffuseSolarSpectrum()

◆ calculateDirectSolarSpectrum()

◆ calculateGlobalSolarSpectrum()

◆ calibrateTurbidityFromTimeseries()

◆ disableCloudCalibration()

◆ enableCloudCalibration()

◆ enablePragueSkyModel()

◆ getAmbientLongwaveFlux() [1/2]

◆ getAmbientLongwaveFlux() [2/2]

◆ getAtmosphericConditions()

◆ getDiffuseFraction() [1/2]

◆ getDiffuseFraction() [2/2]

◆ getSolarFlux() [1/2]

◆ getSolarFlux() [2/2]

◆ getSolarFluxNIR() [1/2]

◆ getSolarFluxNIR() [2/2]

◆ getSolarFluxPAR() [1/2]

◆ getSolarFluxPAR() [2/2]

◆ getSunAzimuth()

◆ getSunDirectionSpherical()

◆ getSunDirectionVector()

◆ getSunElevation()

◆ getSunriseTime()

◆ getSunsetTime()

◆ getSunZenith()

◆ isPragueSkyModelEnabled()

◆ pragueSkyModelNeedsUpdate()

◆ selfTest()

◆ setAtmosphericConditions()

◆ setSunDirection()

◆ updatePragueSkyModel()