[x3d-public] [x3d] Spec Comment by vmarchetti on 19776-1: XML Encoding - V3.3

[Brutzman, Donald (Don) (CIV)]

Thanks.  Accepted as

 

*	Mantis 1450: DEF and USE can only be used consistently with same
type of node
*	https://www.web3d.org/member-only/mantis/view.php?id=1450

 

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 https://faculty.nps.edu/brutzman

 

-----Original Message-----
From: x3d <x3d-bounces at web3d.org> On Behalf Of Spec Feedback
Sent: Friday, January 26, 2024 7:36 AM
To: x3d at web3d.org
Subject: [x3d] Spec Comment by vmarchetti on 19776-1: XML Encoding - V3.3

 

-- Submitter indicates that this comment may be public: *Yes* --

 

Comment on 19776-1: XML Encoding - V3.3

4.3.4

 
<https://www.web3d.org/documents/specifications/19776-1/V3.3/Part01/concepts
.html#DEFAndUSEAttributeSyntax>
https://www.web3d.org/documents/specifications/19776-1/V3.3/Part01/concepts.
html#DEFAndUSEAttributeSyntax

 

-----------------

Recent posts to the X3D-Public mailing list have pointed out that there is a
discrepancy among browsers in how they handle the DEF/USE statements if the
XML elements in the XML encoding have disparate names.

 <http://web3d.org/pipermail/x3d-public_web3d.org/2024-January/020212.html>
http://web3d.org/pipermail/x3d-public_web3d.org/2024-January/020212.html

 

I recommend the XML encoding spec be edited, in the next standard submission
cycle, to clarify that it is invalid for XML elements with different names
(i.e. encoding different X3D nodes) to have matching values of DEF/USE

attributes.)

 

Proposed wording to be added to what is now Section 4.3.4 of the 19776-1
document at version 3.3:

 
<https://www.web3d.org/documents/specifications/19776-1/V3.3/Part01/concepts
.html#DEFAndUSEAttributeSyntax>
https://www.web3d.org/documents/specifications/19776-1/V3.3/Part01/concepts.
html#DEFAndUSEAttributeSyntax

 

Suggest adding this text:

 

----------------------------------------------------------------------------
-

It is a validation error when an XML element with a DEF attribute  matches
another element's USE attribute but has a different XML element name.

 

Example of invalid XML encoding:

 

 

 

 

 

 

____________________________________________________________________________

 

-----------------

 

Submitted on Friday, 2024,  January 26 - 10:36am by vmarchetti (Vincent
Marchetti )

IP: 76.34.206.25

 

See:  <https://www.web3d.org/node/1694/submission/10124>
https://www.web3d.org/node/1694/submission/10124

 

 

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