%D \module
%D   [       file=colo-imp.ryb,
%D        version=2025.09.14,
%D          title=\CONTEXT\ Color Macros,
%D       subtitle=RYB,
%D         author=Wolfgang Schuster,
%D           date=\currentdate,
%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]

% https://www.w3schools.com/colors/colors_wheels.asp

\startprotectedcolors

  \definecolor [redorange]         [x=FC600A]
  \definecolor [orange]            [x=FB9902]
  \definecolor [yelloworange]      [x=FCCC1A]
  \definecolor [yellow]            [x=FEFE33]
  \definecolor [yellowgreen]       [x=B2D732]
  \definecolor [green]             [x=66B032]
  \definecolor [bluegreen]         [x=347C98]
  \definecolor [blue]              [x=0247FE]
  \definecolor [bluepurple]        [x=4424D6]
  \definecolor [purple]            [x=8601AF]
  \definecolor [redpurple]         [x=C21460]
  \definecolor [red]               [x=FE2712]

  \definecolor [lightredorange]    [.5(redorange,white)]
  \definecolor [lightorange]       [.5(orange,white)]
  \definecolor [lightyelloworange] [.5(yelloworange,white)]
  \definecolor [lightyellow]       [.5(yellow,white)]
  \definecolor [lightyellowgreen]  [.5(yellowgreen,white)]
  \definecolor [lightgreen]        [.5(green,white)]
  \definecolor [lightbluegreen]    [.5(bluegreen,white)]
  \definecolor [lightblue]         [.5(blue,white)]
  \definecolor [lightbluepurple]   [.5(bluepurple,white)]
  \definecolor [lightpurple]       [.5(purple,white)]
  \definecolor [lightredpurple]    [.5(redpurple,white)]
  \definecolor [lightred]          [.5(red,white)]

  \definecolor [darkredorange]     [.5(redorange,black)]
  \definecolor [darkorange]        [.5(orange,black)]
  \definecolor [darkyelloworange]  [.5(yelloworange,black)]
  \definecolor [darkyellow]        [.5(yellow,black)]
  \definecolor [darkyellowgreen]   [.5(yellowgreen,black)]
  \definecolor [darkgreen]         [.5(green,black)]
  \definecolor [darkbluegreen]     [.5(bluegreen,black)]
  \definecolor [darkblue]          [.5(blue,black)]
  \definecolor [darkbluepurple]    [.5(bluepurple,black)]
  \definecolor [darkpurple]        [.5(purple,black)]
  \definecolor [darkredpurple]     [.5(redpurple,black)]
  \definecolor [darkred]           [.5(red,black)]

\stopprotectedcolors

\continueifinputfile{colo-imp-ryb.mkiv}

\starttext

\startluacode

local ryb_colors = {
    "redorange",
    "orange",
    "yelloworange",
    "yellow",
    "yellowgreen",
    "green",
    "bluegreen",
    "blue",
    "bluepurple",
    "purple",
    "redpurple",
    "red",
}

local ryb_hues = {
    "",      -- hue
    "light", -- tint
    "dark",  -- shade
}

context.showcolorcomponents{ utilities.parsers.array_to_string(ryb_colors) }

context.startTEXpage()
context.setupTABLE( { "c" }, { 2 }, { background = "color", backgroundcolor = "black"} )
context.bTABLE{ frame = "off", strut = "no", offset = "1ts" }
for _, hue in next, ryb_hues do
    context.bTR()
        context.bTD()
            context.startMPcode()
            for index, color in next, ryb_colors do
                context('drawfill fullcircle scaled 4ts shifted (9ts,0) rotated %i withcolor "%s" ;', 30*(index-1), hue .. color)
            end
            context.stopMPcode()
        context.eTD()
        context.bTD()
            context.startMPcode()
            for index, color in next, ryb_colors do
                context('fill fullcircle scaled 4ts shifted (9ts,0) rotated %i withcolor "%s" ;', 30*(index-1), hue .. color)
                context('draw fullcircle scaled 4ts shifted (9ts,0) rotated %i withcolor "%s" ;', 30*(index-1), "white" )
            end
            context.stopMPcode()
        context.eTD()
    context.eTR()
end
context.eTABLE()
context.stopTEXpage()

\stopluacode

\stoptext