LispWorks CAPI Reference Manual > 3 COLOR Reference Entries

NextPrevUpTopContentsIndex

color- <component>

Function
Summary

Returns the associated component of a color specification.

Package

color

Signature
color-red color-spec
 => color-component
color-green color-spec
 => color-component
color-blue 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


LispWorks CAPI Reference Manual - 21 Dec 2009

NextPrevUpTopContentsIndex