On 12/09/2010 02:17 AM, Dmitry Torokhov wrote: > On Thu, Dec 09, 2010 at 02:12:08AM +0100, Henrik Rydberg wrote: >>>>> >> >>>>> Is it assumed that the envelop has only two touches comprising it? Or is >>>>> it any number of touches? If it's any number of touches, how does one >>>>> know how many touches it is? >>>> >>>> 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, more than 2 >>> point shapes without using native MT data is over-engineering the >>> problem... Do we have examples other than older generation Elantechs and >>> Synaptics that need envelope notion? >>> >> >> >> Those are the ones targeted so far. Maybe appletouch could be added to the list >> as well. I imagine all drivers will end up using zero, one and two envelope points. > > Even ones that fully support independent finger tracking? > No, sorry, that should read "all drivers in that list". The ones that can detect individual fingers in space are fine as they are. -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
