contrast/apca library

Constants

blkClmp → const double

blkThrs → const double

deltaYMin → const double

inputClampMax → const double

inputClampMin → const double

loBoWOffset → const double

loClip → const double

loWoBOffset → const double

mainTrc → const double

Calculations for APCA contrast. Per APCA landing page: The correct code to use is right here apca-w3 in this satellite repository Referring to: https://github.com/Myndex/apca-w3/blob/master/src/apca-w3.js Variable names and most comments are from the original source.

mainTrcEncode → const double

mExp → const double

mExpAdj → const double

mFactInv → const double

mFactor → const double

mOffsetIn → const double

mOffsetOut → const double

normBg → const double

normText → const double

revBg → const double

revText → const double

sBco → const double

scaleBoW → const double

scaleWoB → const double

sGco → const double

sRco → const double

Functions

apcaContrastOfApcaY(double textApcaY, double backgroundApcaY) → double

apcaFromArgbs(int textArgb, int backgroundArgb) → double

apcaFromColors({required Color textColor, required Color backgroundColor}) → double

apcaYFromArgb(int argb) → double

apcaYToGrayscaleArgb(double apcaY, {bool debug = false}) → int

inBoundsApcaY(double apcaY) → double

lstarToApcaY(double lstar) → double

Converts a CIE L* value to an APCA perceptual luminance (apcaY).