linux-kernel - Re: [PATCH] input: Add a detailed multi-touch finger data report protocol

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Date:	Fri, 21 Nov 2008 09:43:44 -0500
From:	Jim Gettys <jg@...top.org>
To:	Henrik Rydberg <rydberg@...omail.se>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] input: Add a detailed multi-touch finger data report
	protocol

Interesting....  I know of the a different case: a device which
certainly does not report ellipses, rather reports x, y, dx, dy.
                          - Jim


On Thu, 2008-11-20 at 00:34 +0100, Henrik Rydberg wrote:
> Jim Gettys wrote:
> [...]
> > Also, I'm still concerned about using elipses. I doubt very much any
> > hardware will ever be reporting elipses; more likely are parallelograms,
> > or trapezoids, other simple geometric figures, rather than a center with
> > size and orientation.
> 
> The bcm5974 chip is doing precisely this.
> 
> Henrik
> 
-- 
Jim Gettys <jg@...top.org>
One Laptop Per Child

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