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allegro

This document pertains to color related methods found in the Allegro egg.

Please see the main [allegro] wiki page for more information.

Records

color

colorrecord

make-color*procedure

make-colorprocedure

free-color! colorprocedure

color-red colorprocedure

color-green colorprocedure

color-blue colorprocedure

color-alpha colorprocedure

Functions

Color

color-addon-versionprocedure

Implements al_get_allegro_color_version.

(hsv->rgb (float h) (float s) (float v))procedure

Returns a 3-element list consisting of the rgb elements.

(rgb->hsl (float red) (float green) (float blue))procedure

Returns a 3-element list consisting of the hsl elements.

(hsl->rgb (float hue) (float saturation) (float lightness))procedure

Returns a 3-element list consisting of the rgb elements.

name->rgb stringprocedure

Returns a 3-element list consisting of the rgb elements.

(rgb->name (float red) (float green) (float blue))procedure

Returns a string representation of the rgb elements.

(cmyk->rgb (float cyan) (float magenta) (float yellow) (float key))procedure

Returns a 3-element list consisting of the rgb elements.

(rgb->cmyk (float red) (float green) (float blue))procedure

Returns a 4-element list consisting of the cmyk elements.

(yuv->rgb (float y) (float u) (float v))procedure

Returns a 3-element list consisting of the rgb elements.

(rgb->yuv (float red) (float green) (float blue))procedure

Returns a 3-element list consisting of the yuv elements.

(rgb->html (float red) (float green) (float blue))procedure

Returns a string consisting of the html representation.

html->rgb stringprocedure

Returns a 3-element list consisting of the rgb elements.

(make-color-rgb* (integer r) (integer g) (integer b))procedure

Creates a color struct from rgb elements.

(make-color-rgb (integer r) (integer g) (integer b))procedure

Creates a color struct from rgb elements, with (free-color!) declared as a finalizer.

(make-color-rgba*(integer r) (integer g) (integer b) (integer a))procedure

Creates a color struct from rgba elements.

(make-color-rgba (integer r) (integer g) (integer b) (integer a))procedure

Creates a color struct from rgba elements, with (free-color!) declared as a finalizer.

(make-color-yuv* (integer y) (integer u) (integer v))procedure

Creates a color struct from yuv elements.

(make-color-yuv (integer y) (integer u) (integer v))procedure

Creates a color struct from yuv elements, with (free-color!) declared as a finalizer.

(make-color-cmyk* (integer c) (integer m) (integer y) (integer k))procedure

Creates a color struct from cmyk elements.

(make-color-cmyk (integer c) (integer m) (integer y) (integer k))procedure

Creates a color struct from cmyk elements, with (free-color!) declared as a finalizer.

(make-color-hsl*(integer h) (integer s) (integer l))procedure

Creates a color struct from hsl elements.

(make-color-hsl (integer h) (integer s) (integer l))procedure

Creates a color struct from hsl elements, with (free-color!) declared as a finalizer.

(make-color-hsv*(integer h) (integer s) (integer v))procedure

Creates a color struct from hsv elements.

(make-color-hsv (integer h) (integer s) (integer v))procedure

Creates a color struct from hsv elements, with (free-color!) declared as a finalizer.

make-color-name* stringprocedure

Creates a color struct from a string name.

make-color-name stringprocedure

Creates a color struct from a string name, with (free-color!) declared as a finalizer.

make-color-html* stringprocedure

Creates a color struct from a html representation.

make-color-html stringprocedure

Creates a color struct from a html representation, with (free-color!) declared as a finalizer.

(color-yuv! color (float y) (float u) (float v))procedure

Maps yuv elements to a color struct.

(color-cmyk! color (float c) (float m) (float y) (float k))procedure

Maps cmyk elements to a color struct.

(color-hsl! color (float h) (float s) (float l))procedure

Maps hsl elements to a color struct.

(color-hsv! color (float h) (float s) (float v))procedure

Maps hsv elements to a color struct.

color-name! color stringprocedure

Maps a color name to a color struct.

color-html! color stringprocedure

Maps a html representation to a color struct.