Stellarium  HEAD
Public Member Functions | Protected Member Functions | Protected Attributes
StelFader Class Referenceabstract

#include <StelFader.hpp>

Public Member Functions

 StelFader (bool initialState)
virtual void update (int deltaMs)=0
 Increments the internal counter of deltaMs milliseconds.
virtual float getInterstate () const =0
 Gets current value (between 0 and 1)
virtual StelFaderoperator= (bool s)=0
bool operator== (bool s) const
 operator bool () const
virtual void setDuration (int)
virtual float getDuration () const =0

Protected Member Functions

float getTargetValue () const
float getStartValue () const

Protected Attributes

bool state

Detailed Description

Manages a (usually smooth) transition between two states (typically ON/OFF) in function of a counter It used for various purpose like smooth transitions