Atmosphere Class Reference

Compute and display the daylight sky color using openGL. More...

#include <Atmosphere.hpp>

Public Member Functions
void	computeColor (double JD, Vec3d _sunPos, Vec3d moonPos, float moonPhase, float moonMagnitude, StelCore *core, float latitude=45.f, float altitude=200.f, float temperature=15.f, float relativeHumidity=40.f)
	Compute sky brightness values and average luminance.
void	draw (StelCore *core)
void	update (double deltaTime)
void	setFadeDuration (float duration)
	Set fade in/out duration in seconds.
float	getFadeDuration () const
	Get fade in/out duration in seconds.
void	setFlagShow (bool b)
	Define whether to display atmosphere.
bool	getFlagShow () const
	Get whether atmosphere is displayed.
float	getRealDisplayIntensityFactor () const
	Get the actual atmosphere intensity due to eclipses + fader. More...
float	getFadeIntensity () const
float	getAverageLuminance () const
	Get the average luminance of the atmosphere in cd/m2 If atmosphere is off, the luminance equals the background starlight (0.001cd/m2). More...
void	setAverageLuminance (float overrideLum)
	override computable luminance. More...
void	setLightPollutionLuminance (float f)
	Set the light pollution luminance in cd/m^2.
float	getLightPollutionLuminance () const
	Get the light pollution luminance in cd/m^2.

Detailed Description

The sky brightness is computed with the SkyBright class, the color with the SkyLight. Don't use this class directly but use it through the LandscapeMgr.

Member Function Documentation

getAverageLuminance()

float Atmosphere::getAverageLuminance ( ) const

inline

Otherwise it includes the (atmosphere + background starlight (0.0001cd/m2) * eclipse factor + light pollution.

Returns

the last computed average luminance of the atmosphere in cd/m2.

getRealDisplayIntensityFactor()

float Atmosphere::getRealDisplayIntensityFactor ( ) const

inline

Returns

the display intensity ranging from 0 to 1

setAverageLuminance()

void Atmosphere::setAverageLuminance

(

float

overrideLum

)

This is for special operations only, e.g. for scripting of brightness-balanced image export. To return to auto-computed values, set any negative value at the end of the script.