4.3 DUIM-DCs Module
make-gray-color
Function
Summary
Returns a member of class <color>.
Signature
make-gray-colorluminosity #key opacity => color
Arguments
- luminosity
- An instance of type
limited(<real>, min: 0, max: 1). - opacity
- An instance of type
limited(<real>, min: 0, max: 1). Default value:1.0.
Values
- color
- An instance of type
<color>.
Library
duim-dcs
Module
duim-dcs
Description
Returns a member of class <color>. The luminance is a real number between 0 and 1 (inclusive). On a black-on-white display device, 0 means black, 1 means white, and the values in between are shades of gray. On a white-on-black display device, 0 means white, 1 means black, and the values in between are shades of gray.