[x3d-public] Minutes of X3D WG Meeting Wednesday 11th October 2017 - Public Release

[Roy Walmsley]

Minutes of the X3D WG meeting held on Wednesday 11th October 2017  - Public
Release

 

Attendees: Roy Walmsley, Vince Marchetti, Dick Puk, Anita Havele, Don
Brutzman, Nicholas Polys

Apologies received: Leonard Daly

 

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A. Outstanding matters

                

                None.

 

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B. Summary and Technical reports

Opportunity for anyone to make a short report on Web site, marketing,
communication, specification or technical matters that is not already on the
Agenda.

 

1.	Report on Mantis SG meeting held Thursday 5th October 2017

Reference:
http://web3d.org/mailman/private/x3d_web3d.org/2017-October/006380.html

 

Eleven issues were triaged. Three were agreed and updated to Assigned. One
required more info therefore was updated to Feedback. Seven were updated to
Acknowledged.

 

2.	Report on Mantis SG meeting held Tuesday 10th October 2017

Reference:
http://web3d.org/mailman/private/x3d_web3d.org/2017-October/006386.html

 

Five issues were reviewed. Two were agreed and assigned. The other three
were updated to Acknowledged.

 

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C. Discussion Topics

 

1.	Release of Mantis subgroup meeting minutes to the public

The motive for public release is similar to that for the  full WG minutes -
keeping the community aware of steady activity, and encouraging people to
join. Roy noted, however, that for specification comments submitted last
year or earlier, we do not have the submitter's permission to make the
details of the issue public.

 

It was agreed that minutes be publicly disseminated on a weekly basis,
following the same procedure as the  full WG minutes, i.e. approval at the
start of the subsequent meeting.

 

2.	Sequencers for floating point data types

Reference:
http://web3d.org/pipermail/x3d-public_web3d.org/2017-October/007599.html
thread on the public list entitled "FloatSequencer ?"

 

Don summarized the historical narrative on the use of interpolators for
floating point numbers and the possibility of using sequencers. VRML defined
introduced interpolators, which were all piecewise linear functions. X3D
added more interpolators to cover different types, including non-linear
interpolators. Finally event utilities were added, dealing with integers and
booleans. It is noteworthy that sequencers have the additional fields,
'next' and 'previous'.

 

Why not have sequences for floating point? One reason was to avoid node
bloat, as eight new nodes would be needed to cover all types. However, it
was also suggested that new nodes could improve animation.

 

Rather that provide an immediate answer it was suggested the prototypes
could be written to assess usage. This was agreed to be a good way forward.
It was noted that an external prototype could be used, keeping the file with
the prototype on the web site. Then authors and scene players could download
it as needed. It was felt that this would be a good approach to promote
community involvement.

 

Reviewing the long term aspects, however, it was noted that for
archivability reasons the new nodes ought to be in the standard, and not
offered as external prototypes.

 

3.	Member-only discussion

 

4.	Member-only discussion

 

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D. Specification work, GitHub, and Mantis issues

 

None set.

 

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E. Schedule review

 

Other topics for discussion not yet assigned are:

 

Investigate other 3D display capabilities: Glam and CSS.

*         GLAM see https://tparisi.github.io/glam/

 

Timo Sturm of Fraunhofer to talk about advanced materials. Also with Max
Limper re SRC/glTF interoperability, X3DOM support and repeatability.

 

October 18th - X3D integration into HTML5 - Events and Event models

October 25th -

Note: Daylight saving time ends for the UK and Europe on Sunday 29th
October, therefore the meeting on November 1st will be one hour earlier for
Europeans.

November 1st -

Note: Daylight saving time ends for US on Sunday 5th November, so the
meeting times will revert back to normal for Europeans.

November 8th -

 

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Roy Walmsley

X3D WG co-chair

 

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