[x3d-public] ScreenSensor, was: LineSensor

Leonard Daly Leonard.Daly at realism.com
Thu Apr 4 06:59:28 PDT 2019


[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/f196e98c86bc9dc9686a7e5b4acede7d
> https://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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