[x3d-public] Comments on ISO/IEC 10775-1 V3.3 Core Component

[Roy Walmsley]

Hi  Joe,

Thanks for your response. The object hierarchy graph is noted. After
commenting on the DEF/USE (see December) I was challenged by Don to come up
with some words. For various reasons I started with the core component,
hence these comments. I am midway through processing the Time component,
section 8.

I hope to attend the X3D working group meeting on  Wednesday, when maybe I
can get some feedback and guidance.

Roy

-----Original Message-----
From: Joe D Williams [mailto:joedwil at earthlink.net] 
Sent: 04 January 2015 18:03
To: Roy Walmsley; x3d-public at web3d.org
Subject: Re: [x3d-public] Comments on ISO/IEC 10775-1 V3.3 Core Component



Hi Roy,
Fine observations, these inputs are are very welcome,
Please notice the X3D hierarchy diagram: in 4, Concepts. .

http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/concepts.h
tml#f-Objecthierarchy

This must also be considered in order to work through your comments.

All Best,
Joe



----- Original Message ----- 
From: "Roy Walmsley" <roy.walmsley at ntlworld.com>
To: <x3d-public at web3d.org>
Sent: Saturday, January 03, 2015 7:09 AM
Subject: [x3d-public] Comments on ISO/IEC 10775-1 V3.3 Core Component


>
> SUBSTANTIVE CHANGES
>
>
> 1. X3DMetadataNode
>
>
> There is a single instance of the term X3DMetadataNode in the 
> existing
> specification in paragraph 7.2.4.3 Integration with X3D worlds.
>
> The abstract interface X3DMetadataObject is defined as simply being 
> two
> fields. Note that it has no nodal content as it is not a type 
> derived from
> X3DNode. It cannot, therefore, be used as the value for a SFNode or 
> MFNode
> field because these fields are defined, in section 5.3.12, to 
> specify an X3D
> node.
>
> The metadata field in all nodes derived from X3DNode is defined as a 
> SFNode
> field. Thus X3DMetadataObject cannot be the type required. Thus all 
> node
> definitions throughout the specification are incorrect.
>
> The solution for this is to define the X3DMetadataNode.  This is 
> derived
> from X3DNode and X3DMetadataObject.
>
> My changes therefore include the definition of the X3DMetadataNode,
> references to it in all appropriate places in section 7 and setting 
> it as
> the required type for the value of all metadata fields.
>
>
> 2. X3DUrlObject
>
>
> This abstract interface is not defined in this section. It is in 9
> Networking component. All references have been removed.
>
>
> 3. X3DBindableNode
>
>
> In the list of constructs in 7.2.1 the X3DbindableNode is included 
> as a
> commonly used interface. It is, however, a base abstract node type. 
> Thus it
> is more appropriate to include it in the line above.
>
> In section 7.2.2 the terminology 'multiply instanced' has been 
> essentially
> replaced with 'multiply referenced instance' when referring to the 
> DEF/USE
> syntax in accordance with Comment 01 of mine.
>
>
> 3. Header statement
>
>
> The version number of the standard supported is shown as 3.2.  It 
> should be
> 3.3.
>
>
> 4. PROFILE statement
>
>
> The list of profiles defined in the standard did not include the 
> Medical
> Interchange profile. This has been added.
>
>
> 5. UNIT statement
>
>
> The unit statement, 7.2.5.5 included discussion of the 
> <conversion_factor>
> for converting from user defined units to standard base units. There 
> was no
> definition of how this conversion factor is to be applied. I have 
> added,
> therefore, an equation to cover this. Does this equation represent 
> the
> intended method?
>
>
> 6. Support levels
>
>
> The MetadataBoolean node is missing from Table 7.2 - Core component 
> support
> levels.
>
>
> TEXTUAL CORRECTIONS
>
>
> There were quite a number of simple typographic and grammatical 
> errors that
> I have corrected. They included some erroneous links.  There were 
> also some
> layout amendments. None of these are substantive.
>
>
> ATTACHMENT
>
>
> Attached to this document is the suggested updated HTML file for the 
> core
> component.
>
>
>
>


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