All Manuals > CAPI User Guide and Reference Manual > 24 COLOR Reference Entries

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color-blue

color-green

color-red

color-hue

color-saturation

color-value

Functions
Summary

Returns the associated component of a color specification.

Package

color

Signature

color-blue color-spec => color-component

color-green color-spec => color-component

color-red color-spec => color-component

color-hue color-spec => color-component

color-saturation color-spec => color-component

color-value color-spec => color-component

Arguments

color-spec

A color specification.

Values

color-component

A color component from the appropriate color model.

Description

If color-spec is not from the appropriate color model (:rgb in the case of color-red, color-green and color-blue, and :hsv in the case of color-hue, color-saturation and color-value) then the component is calculated.

Example
COLOR 31 > (color:make-rgb 1.0s0 0.0s0 0.0s0)
#(:RGB 1.0S0 0.0S0 0.0S0)
COLOR 32 > (color-red *)
1.0S0
COLOR 33 > (color-green **)
0.0S0
COLOR 34 > (color-value ***)
1.0S0
COLOR 35 >
See also

make-hsv
make-rgb
make-gray
color-model
color-level


CAPI User Guide and Reference Manual (Unix version) - 3 Aug 2017

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