diff options
Diffstat (limited to 'tex/context/base/mkiv/attr-col.lua')
| -rw-r--r-- | tex/context/base/mkiv/attr-col.lua | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/attr-col.lua b/tex/context/base/mkiv/attr-col.lua index 15590dccc..88358aeb7 100644 --- a/tex/context/base/mkiv/attr-col.lua +++ b/tex/context/base/mkiv/attr-col.lua @@ -259,12 +259,19 @@ local function graytohsv(s) return 0, 0, s end +local function hwbtorgb(hue,black,white) + local r, g, b = hsvtorgb(hue,1,.5) + local f = 1 - white - black + return f * r + white, f * g + white , f * b + white +end + colors.rgbtocmyk = rgbtocmyk colors.rgbtogray = rgbtogray colors.cmyktorgb = cmyktorgb colors.cmyktogray = cmyktogray colors.rgbtohsv = rgbtohsv colors.hsvtorgb = hsvtorgb +colors.hwbtorgb = hwbtorgb colors.hsvtogray = hsvtogray colors.graytohsv = graytohsv |