Comments on: Multi-touch Gesture Recognition in Silverlight 3

By: jesse

jesse — Fri, 13 Nov 2009 20:17:17 +0000

Hi Cedric,
A “secondary finger” can be any one after the first (primary). They’ll all send events, and since they’re just calculated relative to the primary, it’s actually fairly robust even with 3+ fingers on an element – e.g. putting 3 fingers on an element and rotating behaves similarly to only 2.

I wanted to keep this example fairly simple to show the concepts, but this could certainly be expanded to customize the behavior for other cases (e.g. multi-finger panning).

By: CedricSoubrie

CedricSoubrie — Thu, 12 Nov 2009 15:32:51 +0000

I’m a bit surprised by your implmentation.
What if both fingers moves ? It will be sometimes interpreted as a zoom/rotate (as secondary finger moves) and sometimes as a pan gesture (as primary finger moves)?

Or maybe when there is several fingers, only the last one still send events ? This would mean that in case of a zoom, only the secondary finger will send events, but this means that if the user only moves its first finger nothing will happen.

By: Multi-touch Gesture Recognition | Silverlike - A Free Microsoft Silverlight 3 Directory

Wed, 11 Nov 2009 05:08:12 +0000

[...] Jesse released a detailed article description all the basics of multi touch in Silvelight 3, as well as implementing your custom gesture recognition capabilities. [...]

By: Multi-Touch gesture recognition in Silverlight 3 | DavideZordan.net

Multi-Touch gesture recognition in Silverlight 3 | DavideZordan.net — Sun, 08 Nov 2009 16:54:41 +0000

[...] this article, Jesse Bishop illustrates how to receive and interpret multi-touch input and traslate these events [...]

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uberVU - social comments — Sun, 08 Nov 2009 16:42:42 +0000

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