[Korea-chapter] [kaist-nps] [Consortium] [X3D] minutes from Web3D Korea chapter meeting
Byounghyun Yoo
yoo at byoo.net
Sun Dec 20 23:54:52 PST 2009
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Byounghyun
-----Original Message-----
From: kaist-nps-bounces at movesinstitute.org [mailto:kaist-nps-bounces at movesinstitute.org] On Behalf Of Michael Aratow
Sent: Tuesday, December 08, 2009 1:19 AM
To: Alan Hudson
Cc: korea-chapter at web3d.org; Web3D Consortium Members; KAIST-NPS collaboration; X3D Graphics member mailing list
Subject: Re: [kaist-nps] [Consortium] [X3D] minutes from Web3D Korea chapter meeting
Are there not multiple examples of precedent for the units problem? Did
SEDRIS address this challenge?
Thanks,
Mike
Alan Hudson wrote:
> Don Brutzman wrote:
>> 1. We had a very productive meeting of the Web3D Korea chapter
>> in Seoul Korea, Monday 7 December
>>
>> Attendees:
>>
>> Dr. Myeong Won Lee, Suwon University, Chapter organizer
>> Dr. Kwanhee Yoo, Chungbuk National University
>> Dr. Hae-Jimn Kim, Korea Standards Association (KSA) and
>> ___ University
>> Dr. Gun Lee, Electronics and Telecommunication Research
>> Institute (ETRI)
>> Dr. Byounghyun Yoo, MIT Singapore Alliance
>> Pranveer Singh, Korea Advanced Institute of Science and
>> Technology (KAIST)
>> ___, Chapter secretary
>> Dr. Don Brutzman, Naval Postgraduate School (NPS) and
>> member Web3D Consortium Board of Directors (BoD)
>>
>> Minutes recorded by myself with periodic detailed review by the group.
>>
>> 2. Units proposal, Myeong Won Lee
>>
>> Dr. Lee showed her classic example with a bacterium and a larger
>> cell, demonstrated in her Units browser. This showed that the
>> concepts can work satisfactorily. The video of the demo will be
>> placed online in the Korea Chapter document directory.
>>
>> Sh has also made an X3D schema extension to validate the new construct,
>> tested in Eclipse and X3D-Edit.
>>
>> There are 2 approaches to Unit grammar checks, details shown in slides.
>> The second approach, which explicitly declares each type of unit (rather
>> than multiple name and value pairs) seems preferable since it will
>> enable
>> X3D DTD or Schema checking of valid content.
>
>
>
> I don't see how specifying a unit name and conversionFactor is any
> easier to validate then specifying an enumeration value for a unit.
> Both can be validated by a schema.
>
> We want some way to specify an arbitrary units conversion instead of
> enunciating everything.
>
> How about 2 ways to specify this. One that uses an enum and one that
> use an arbitrary conversion. That way we can convert content from
> other languages that have arbitrary conversions easily.
>
> Just a rough concept here
>
> ENUMERATED_UNITS Inches
> FLEXIBLE_UNITS Inches 0.0254
>
> Maybe something like that?
>
>
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