From: Eli Zaretskii <eliz@gnu.org>
To: Mark Oteiza <mvoteiza@udel.edu>
Cc: emacs-devel@gnu.org
Subject: Re: Doc string and operation of color-distance
Date: Fri, 15 Sep 2017 16:41:13 +0300 [thread overview]
Message-ID: <83zi9wkrk6.fsf@gnu.org> (raw)
In-Reply-To: <20170914202312.GA1870@holos.localdomain> (message from Mark Oteiza on Thu, 14 Sep 2017 16:23:12 -0400)
> Date: Thu, 14 Sep 2017 16:23:12 -0400
> From: Mark Oteiza <mvoteiza@udel.edu>
> Cc: emacs-devel@gnu.org
>
> On 14/09/17 at 03:43pm, Mark Oteiza wrote:
> > + Lisp_Object rgb1 = list3 (make_number (&cdef1.red),
> > + make_number (&cdef1.green),
> > + make_number (&cdef1.blue));
> > + Lisp_Object rgb2 = list3 (make_number (&cdef2.red),
> > + make_number (&cdef2.green),
> > + make_number (&cdef2.blue));
>
> I guess these need RGB values to be shifted?
Why? color_distance only shifts them because it wants to work on
8-bit color components, but you want 16-bit components, AFAIU.
next prev parent reply other threads:[~2017-09-15 13:41 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-14 18:45 Doc string and operation of color-distance Eli Zaretskii
2017-09-14 19:12 ` Mark Oteiza
2017-09-15 13:30 ` Eli Zaretskii
2017-09-15 16:45 ` Mark Oteiza
2017-09-15 17:24 ` Eli Zaretskii
2017-09-14 19:43 ` Mark Oteiza
2017-09-14 20:23 ` Mark Oteiza
2017-09-15 13:41 ` Eli Zaretskii [this message]
2017-09-15 13:40 ` Eli Zaretskii
2017-09-15 15:15 ` Mark Oteiza
2017-09-15 16:32 ` Mark Oteiza
2017-09-15 17:26 ` Eli Zaretskii
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