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Re: [css4-mediaqueries] Device units, viewing distance and occluded magnification

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Thu, 23 Feb 2012 08:37:07 -0800
Message-ID: <CAAWBYDAjcHNv_H0c4kzB9GjTZzBCLxg2deM1T_9KR3DaSPPBvg@mail.gmail.com>
To: Charles Pritchard <chuck@jumis.com>
Cc: "www-style@w3.org" <www-style@w3.org>
On Wed, Feb 22, 2012 at 8:08 PM, Charles Pritchard <chuck@jumis.com> wrote:
> This list hit a bit of a dead-end on discussing how to represent physical
> dimensions: I'm going to widen my gaze. Now seems like a fantastic time to
> talk about device units and viewing distance.
>
> Can we pull off a media query that says: (viewing-distance: 8ft)? When
> there's on person in the room, it's becoming feasible to judge how far the
> person is from the screen.
> Does it make sense to consider "target-distance" ?
>
> If we are considering overlays on contact lenses are steradians something we
> want to consider?

Viewing distance is already implicit in the definition of "px", which
is defined in terms of viewing angle
<http://dev.w3.org/csswg/css3-values/#reference-pixel>.

So, there's nothing you have to do.

~TJ
Received on Thursday, 23 February 2012 16:37:54 GMT

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