linux-kernel - Re: [PATCH] input: mt: Add an envelope tool type

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Message-ID: <4D002E6A.7070709@euromail.se>
Date:	Thu, 09 Dec 2010 02:18:34 +0100
From:	Henrik Rydberg <rydberg@...omail.se>
To:	Ping Cheng <pinglinux@...il.com>
CC:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Chase Douglas <chase.douglas@...onical.com>,
	Jiri Kosina <jkosina@...e.cz>, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] input: mt: Add an envelope tool type

>>> Those are good questions. Specifying how many touches are in the

>>> envelop makes sense. It also covers rectangle as a special case of
>>> envelop.
>>
>> I have a feeling that trying to accomodate non-rectangular,
> 
> No, we are not talking about non-rectangular shape here. Envelop is
> always a rectangle. By rectangle above, I meant 2 touches.
> 
> An envelop that includes number of touches offers us more information
> than a rectangle does.


All you need to do to know how many points there are is to count them. :-)

Henrik
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