Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756787Ab0LIBvw (ORCPT ); Wed, 8 Dec 2010 20:51:52 -0500 Received: from ch-smtp03.sth.basefarm.net ([80.76.149.214]:36249 "EHLO ch-smtp03.sth.basefarm.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756452Ab0LIBvu (ORCPT ); Wed, 8 Dec 2010 20:51:50 -0500 Message-ID: <4D00361D.4000603@euromail.se> Date: Thu, 09 Dec 2010 02:51:25 +0100 From: Henrik Rydberg User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6 MIME-Version: 1.0 To: Mohamed Ikbel Boulabiar CC: Ping Cheng , Dmitry Torokhov , Chase Douglas , Jiri Kosina , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] input: mt: Add an envelope tool type References: <1291721340-22652-1-git-send-email-rydberg@euromail.se> <4CFFC3C2.1080905@canonical.com> <20101208235805.GE15294@core.coreip.homeip.net> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Originating-IP: 83.248.196.64 X-Scan-Result: No virus found in message 1PQVfM-0005qR-CY. X-Scan-Signature: ch-smtp03.sth.basefarm.net 1PQVfM-0005qR-CY fd423153aa3da9a3d01f8966f303f12b Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1148 Lines: 25 On 12/09/2010 02:38 AM, Mohamed Ikbel Boulabiar wrote: > On Thu, Dec 9, 2010 at 1:06 AM, Ping Cheng wrote: >> 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 > > Can we have more information that just a rect ? An ellipse for exemple. > Can we get this information at least from synaptics touchpads? Unfortunately not. Chris Bagwell and myself have been experimenting with quite a few different approaches to extract touch information from the synaptics pads. The present approach, to extract the bounding rectangle, is the best we can do, I am afraid - at least with the information unveiled in Takashi's original patch. In particular, rotation information is not reliably extractable. Henrik -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/