average method
Average the alpha
, red
, green
, and blue
channels
of a Color
with another other
.
The resultant alpha may be overridden by providing a strength
.
See alphaFromStrength
for details on using a value between 0..1
or
2..255
as a shortcut for specifying alpha/opacity override.
Exposure method
for ~/
operator, providing strength
.
Implementation
Color average(Color other, [dynamic strength]) =>
withAlpha(alphaFromStrength(strength) ?? alpha) ~/ other;