[x3d-public] ScreenSensor, was: LineSensor

[GPU Group]

Semi-related to Leonard's HMD question: I vaguely remember working with an
android smart phone in 2016 -with its orientation/rotation sensor- and
something about dragging. And in freewrl I had to rework some of the code,
so I could drag by touching and rotating the phone in real world space. And
I think Joe also said something at that time confirming he was doing that.
-Doug

On Thu, Apr 4, 2019 at 11:33 AM Leonard Daly <Leonard.Daly at realism.com>
wrote:

> [Removed all but the most recent post in thread. Previous post at
> http://web3d.org/mailman/private/x3d-public_web3d.org/2019-April/010460.html
> ]
>
> Andreas,
>
> Reading over the explainer (github link), this looks a lot like an HTML
> mousedown/mousemove or touchstart/touchmove set of events. So (when running
> in a browser), is there any substantial difference between the two? I am
> not counting differences in the output coordinate system (pixels vs. scaled
> units). If no, then why introduce a new node and events for something that
> already exists. If yes, please explain what problem this solves that HTML's
> event system does not.
>
> Independent of the above, how would this work in an stereo immersive
> environment (headset)?
>
> Leonard Daly
>
>
>
> I am working on a spec. comment on screen aligned PlaneSensor
> functionality (aka PointSensor in freeWrl or SpaceSensor in Instant)
> and developed an example, a description and suggested spec. language
> here:
> https://bl.ocks.org/andreasplesch/f196e98c86bc9dc9686a7e5b4acede7dhttps://gist.github.com/andreasplesch/f196e98c86bc9dc9686a7e5b4acede7d
>
> This is an important but currently not available feature which cannot
> be implemented with a Proto, at least I cannot think of a way to do.
>
> Any feedback will be welcome. Actually, I have a couple comments
> myself in a follow-up message.
>
> -Andreas
>
>
>
>
> --
> *Leonard Daly*
> 3D Systems & Cloud Consultant
> LA ACM SIGGRAPH Past Chair
> President, Daly Realism - *Creating the Future*
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>
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