ensure-rgb

ensure-hsv

ensure-gray Functions

Summary

Returns a color specification for a particular model.

Package

color

Signatures

ensure-rgb color-spec => result

ensure-hsv color-spec => result

ensure-gray color-spec => result

Arguments

color-spec⇩

A color specification.

Values

result⇩

A color specification.

Description

The functions ensure-rgb, ensure-hsv and ensure-gray each return a color specification matching the supplied color-spec, but in the appropriate model.

If color-spec is in the same model, it is just returned. Otherwise a new color specification for that model is calculated. Thus, ensure-rgb returns a color specification in the RGB color model, whatever color model is used in color-spec.

If color-spec has an alpha component, then result has that same alpha component.

Examples

(ensure-hsv (make-rgb 1 1 0 0.75))
=>
#(:HSV 1 1 1 0.75)

(ensure-gray (make-rgb 0 0 1 0.75))
=>
#(:GRAY 0.33333302S0 0.75)