barsuift.simLife.j3d.universe.environment
Interface Sun3D

All Superinterfaces:

IObservable

public interface Sun3D
extends IObservable

Method Summary

javax.media.j3d.DirectionalLight	getLight()
Percent	getWhiteFactor() Computes the white factor, based on the position (rise and zenith angles).

Methods inherited from interface barsuift.simLife.IObservable

addObserver, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers

Method Detail

getWhiteFactor

Percent getWhiteFactor()

Computes the white factor, based on the position (rise and zenith angles). The lower the sun is, the lower the white factor.

• When the white factor is 100%, the sun is white (Red = Green = Blue).
• When the white factor is 0%, the sun is red (Red = 100%, Green = Blue = 0%).

Concretely, here is the computation :
whiteFactor = sqrt(abs(sinus(riseAngle) * sinus(zenithAngle)))

Returns:

the white factor

getLight

javax.media.j3d.DirectionalLight getLight()