DriftEngineEnvironment · function
easeExposure
current moved toward target over dtSec, closing half the distance in stops every
halfLifeSec.
Explained in Sky and atmosphere.
function easeExposure(current: number, target: number, dtSec: number, halfLifeSec: number): numberimport { easeExposure } from '@driftengine/core';Parameters
| Parameter | Type | Description |
|---|---|---|
current | number | |
target | number | |
dtSec | number | |
halfLifeSec | number |
In depth
In time, not per frame, so a 144 Hz display adapts exactly as fast as a 60 Hz one: the
remaining distance after any number of steps is 2^(−elapsed / halfLife) of what it was, however
the elapsed time was cut up. A half-life of zero is a cut to the target. Both exposures must be
positive, which is what an exposure is.