public static void GetMoonlight(
	float altitude,
	float turbidity,
	Vector3D moonPosition,
	float phaseAngle,
	out Vector3F directMoonlight,
	out Vector3F scatteredMoonlight
)

Public Shared Sub GetMoonlight ( 
	altitude As Single,
	turbidity As Single,
	moonPosition As Vector3D,
	phaseAngle As Single,
	<OutAttribute> ByRef directMoonlight As Vector3F,
	<OutAttribute> ByRef scatteredMoonlight As Vector3F
)

public:
static void GetMoonlight(
	float altitude, 
	float turbidity, 
	Vector3D moonPosition, 
	float phaseAngle, 
	[OutAttribute] Vector3F% directMoonlight, 
	[OutAttribute] Vector3F% scatteredMoonlight
)

static member GetMoonlight : 
        altitude : float32 * 
        turbidity : float32 * 
        moonPosition : Vector3D * 
        phaseAngle : float32 * 
        directMoonlight : Vector3F byref * 
        scatteredMoonlight : Vector3F byref -> unit 

Parameters

altitude

Type: SystemSingle
The altitude (elevation) of the observer's position in meters above the mean sea level.

turbidity

Type: SystemSingle
The turbidity, which measures how polluted the air is. The values should be in the range [1.8, 20]. A turbidity of 2 describes a clear day whereas a turbidity of 20 represents thick haze. A commonly used value is 2.2.

moonPosition

Type: DigitalRune.Mathematics.AlgebraVector3D
The moon position in world space.

phaseAngle

Type: SystemSingle
The moon phase angle in radians in the range [0, 2π]. A new moon has a phase angle of 0. A full moon has a phase angle of π.

directMoonlight

Type: DigitalRune.Mathematics.AlgebraVector3F
The direct moonlight illuminance in [lux].

scatteredMoonlight

Type: DigitalRune.Mathematics.AlgebraVector3F
The scattered moonlight illuminance (= ambient light, indirect light or "skylight" contribution of the moon) in [lux].

The light values are computed for the earth using NASA data, experimental data and a physically-based model of the atmosphere.

All light values are computed for a cloudless sky. When the sky is cloudy, reduce the direct light and increase the scattered/ambient light. Additionally you will want to increase the ambient light at night to model light pollution.

Thread-Safety: This method is not thread-safe, i.e. it must not be called simultaneously from multiple threads.

Reference