From: "Drew Adams" <drew.adams@oracle.com>
To: "'Miles Bader'" <miles@gnu.org>
Cc: 'Chong Yidong' <cyd@stupidchicken.com>, emacs-devel@gnu.org
Subject: RE: color.el
Date: Sun, 20 Feb 2011 07:44:31 -0800 [thread overview]
Message-ID: <5ED470E3D5E543439798EE16AB5F6D60@us.oracle.com> (raw)
In-Reply-To: <877hcvtklr.fsf@catnip.gol.com>
> > IMO, the values should be of the same type (a) for all
> > components (r,g,b,h,s,v), and (b) for both input and
> > return values. We should not be sometimes passing in
> > [0,1] for RGB and other times passing in [0,255] for RGB.
> > Similarly for return values. And we should not use [0,360]
> > for H but [0,1] for S and V.
>
> I agree.
>
> I'd rather not ever use 0-255 in the interface though. _If_ it's
> sometimes desirable to use integers instead of floats for color
> components, 0-65535 gives higher resolution, is already in use by
> Emacs color functions (`color-values'), and can be efficiently (without
> division) converted to 0-255 internally when that range is desirable
> (for backends or whatever).
I agree.
next prev parent reply other threads:[~2011-02-20 15:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-17 0:23 color.el Drew Adams
2011-02-19 18:33 ` color.el Chong Yidong
2011-02-20 0:17 ` color.el Drew Adams
2011-02-20 1:10 ` color.el Miles Bader
2011-02-20 3:19 ` color.el Drew Adams
2011-02-20 4:07 ` color.el Miles Bader
2011-02-20 15:44 ` Drew Adams [this message]
2011-02-21 17:30 ` color.el Chong Yidong
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