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colors: Add color tuples

db4
Eduardo Cavazos 2008-07-28 14:19:11 -05:00
parent 32325079ab
commit e9e1313b6c
1 changed files with 36 additions and 0 deletions
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36
extra/colors/colors.factor
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@ -1,7 +1,43 @@
! Copyright (C) 2003, 2007 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: kernel combinators sequences arrays
classes.tuple multi-methods accessors colors.hsv ;
IN: colors
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
TUPLE: color ;
TUPLE: rgba < color red green blue alpha ;
TUPLE: hsva < color hue saturation value alpha ;
TUPLE: grey < color grey alpha ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
GENERIC: >rgba ( object -- rgba )
METHOD: >rgba { rgba } ;
METHOD: >rgba { hsva }
{ [ hue>> ] [ saturation>> ] [ value>> ] [ alpha>> ] } cleave 4array
[ hsv>rgb ] [ peek ] bi suffix first4 rgba boa ;
METHOD: >rgba { grey } [ grey>> dup dup ] [ alpha>> ] bi rgba boa ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
USE: syntax
M: color red>> >rgba red>> ;
M: color green>> >rgba green>> ;
M: color blue>> >rgba blue>> ;
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: black { 0.0 0.0 0.0 1.0 } ;
: blue { 0.0 0.0 1.0 1.0 } ;
: cyan { 0 0.941 0.941 1 } ;