[x3d-public] additional SAI considerations

[Don Brutzman]

These points are now tracked by

* Mantis 1343: SAI considerations from HTML5 Guidelines review
   https://www.web3d.org/member-only/mantis/view.php?id=1343

On 1/4/2021 9:53 AM, Andreas Plesch wrote:
> 
> Hi Don,
> 
> Please feel free to combine or divide these comments as you see fit,
> for further consideration.
> 
> One comment:
> 
> On Mon, Jan 4, 2021 at 1:21 AM Don Brutzman <brutzman at nps.edu> wrote:
>>
>> Thanks for the many thoughtful insights Andreas.  Really useful.
>>
>> Dick and I will ponder, and recommend everyone do the same.  All feedback always welcome.
>>
>> To our great advantage: we are not legislating how current browser software engines work, rather defining long-term guidelines that serve author needs.
> 
> Long term (5-10 years ?) guidelines for design and vision purposes are
> useful but I do think we need to keep in mind and reference current
> browser software behaviour and engineering in order to have some
> actual impact on any reader of this appendix in the specification. In
> other words, let's also have a short and medium term (1-5 years ?)
> target. This would likely require agreeing with and accommodating
> behaviour of current browsers.
> 
>> Further context: coming up soon now is revision to 19775-2 X3D Scene Access Interface (SAI) as well as corresponding updates to each of the corresponding programming-language binding specification for ECMAScript, Java, Python, etc.
>>
>> * https://www.web3d.org/standards
>>
>> So with our "design hats" still on: if there are changes or additions to these APIs that can best support complementary interoperation between X3D and HTML5 across multiple modes, both for browser-based and server-based X3D, then they will be good to consider.
> 
> Perhaps an X3D API to receive HTML browser events:
> 
> X3DBrowser.addDOMEventListener
> 
> modelled after
> 
> https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
> 
> and conversely an API to dispatch out events as HTML DOM events,
> similar to addFieldCallback:
> 
> https://www.web3d.org/documents/specifications/19777-1/V3.3/Part1/functions.html#t-FieldFunctions
> 
> field.DOMEvent
> 
> modelled after https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent
> 
> Cheers, -Andreas

all the best, Don
-- 
Don Brutzman  Naval Postgraduate School, Code USW/Br       brutzman at nps.edu
Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman