Hi Stephan, OK now I have a clear understanding of your approach (I think), and yes it's good ! I give it my approval ! :) Next step will be to implement it with TUIO or Windows 7 when I'll have some time, I'll let you know if I found problems.
Cheers, On Mon, Nov 22, 2010 at 5:57 PM, Stephan Maximilian Huber < [email protected]> wrote: > Hi Robert, > > Am 22.11.10 17:11, schrieb Robert Osfield: > > What happens with the touchDrag and touchEnded? Do these relate at > > all to the individual phase of each touch? It seems to be that there > > is an overlap of definition between the whole multi-touch event and > > the individual event. > > It's the same logic as with touchBegan. > > With my approach the logic is as follows: > > if you touch with two fingers at the same time you'll get one PUSH-event > with 2 touch-points. if you drag both or only one finger you'll get one > DRAG-event. If you touch the surface with one finger and after a short > while with a second finger you'll get two PUSH-events, the first with > one touch-point, the second event with two touch-points. > > There's some sort of redundancy (PUSH vs. TOUCH_BEGAN, etc) but > implementing a group of GUIEventAdapters or similar approaches appeared > to me too difficult to manage and to understand, as every > GUIEventAdapter has so many more properties totally unrelated to a > touch-event. I wanted to keep it clean and simple. > > > I do wonder if the multi-touch event list might be part of the global > > event state rather than an specific event. I don't have any answers > > I'm just trying to get my head out things. > > you'll loose the mouse compatibility when using multi-touch-devices, and > you'll have to implement all the manipulators from the ground up, > because they are sooo mouse-centric. With the current approach, you have > a small chance to extend them. > > just my 2 cents, if you all come to the conclusion my approach is not > the best I am happy to code a better replacement with some guidance :) > > cheers, > Stephan > > _______________________________________________ > osg-submissions mailing list > [email protected] > > http://lists.openscenegraph.org/listinfo.cgi/osg-submissions-openscenegraph.org > -- Serge Lages http://www.tharsis-software.com
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