[x3d-public] X3D example scenes using MetadataSet in WorldInfo

[John Carlson]

High five!

On Wed, Feb 2, 2022 at 1:55 PM Brutzman, Donald (Don) (CIV) <
brutzman at nps.edu> wrote:

> Yes, you can create X3D metadata fragments in XML which are compatible
> with both V3.3 and V4 simply by staying verbose with XML containerField.
>
>
>
> There are no changes in other programming languages or file encodings
> (though you might do something similar in JSON if paying attention to
> default values).
>
>
>
> There are separate examples for X3D3 and X3D4 to show differences in
> omitting containerField=’value’ in X3D4.  For large MetadataSet
> collections, we’ve seen that this terseness helps with human reading and
> understanding.
>
>
>
> p.s. thank you Vince for reporting problem with pretty-print conversion
> earlier, that has been remedied in X3dToXhtml.xslt stylesheet and updated
> outputs deployed.  Terser excerpt follows.
>
>
>
>    -
>    https://x3dgraphics.com/examples/X3dForWebAuthors/Chapter15Metadata/WorldInfoExampleMetadataSetX3D4.html
>
>
>
> <WorldInfo title='WorldInfoExampleMetadataSetX3D4.x3d Example Scene'>
>
>     <!-- WorldInfo single available child field of interest is 'metadata'
> so contained MetadataSet must have containerField='metadata' which IS NOT
> default in X3D4 -->
>     <MetadataSet containerField='metadata' name='birthday' reference='
> http://www.americaslibrary.gov/jb/colonial/jb_colonial_washingtn_2.html '>
>
>         <MetadataString containerField='metadata' name='calendar'
> reference='this node describes nature of parent node, and is not intended
> as a data value' value='"Julian"'/>
>         <!-- MetadataSet next field of interest is 'value' and so
> contained Metadata nodes must have containerField='value' which IS the
> default in X3D4' -->
>         <MetadataInteger name='day' value='11'/>
>         <MetadataInteger name='month' value='2'/>
>         <MetadataInteger name='year' value='1731'/>
>
>     </MetadataSet>
>
> </WorldInfo>
>
>
>
> 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
>
>
>
> *From:* John Carlson <yottzumm at gmail.com>
> *Sent:* Wednesday, February 2, 2022 11:01 AM
> *To:* Brutzman, Donald (Don) (CIV) <brutzman at nps.edu>
> *Cc:* Vince Marchetti <vmarchetti at kshell.com>
> *Subject:* Re: [x3d-public] X3D example scenes using MetadataSet in
> WorldInfo
>
>
>
> Don/Vince, I think that you are showing, not including differences in
> comments, that one can create X3D which is compatible with both V3.3 and V4?
>
>
>
> On Wed, Feb 2, 2022 at 11:04 AM Brutzman, Donald (Don) (CIV) <
> brutzman at nps.edu> wrote:
>
> Hi Vince.  I belatedly found the attached scene lingering on my desktop.
> Looked like the goal was to show nested MetadataSet nodes.
>
> I’ve added some information to the scene, and validated them.  Also
> adapted matching side-by-side versions for X3D3 and X3D4 to illustrate
> small differences in syntax.
>
>    - X3D Example Archives: X3D4WA, X3D for Web Authors, Chapter 15
>    Metadata
>    - https://x3dgraphics.com/examples/X3dForWebAuthors/Chapter15Metadata
>
>
>    - World Info Example Metadata Set X3D 3
>    -
>    https://x3dgraphics.com/examples/X3dForWebAuthors/Chapter15Metadata/WorldInfoExampleMetadataSetX3D3Index.html
>
>  <WorldInfo>
>
>     <!-- WorldInfo single available child field of interest is 'metadata'
> and so contained MetadataSet must have containerField='metadata' which IS
> the default in X3D3' -->
>     <MetadataSet containerField='metadata' name='birthday' reference='
> http://www.americaslibrary.gov/jb/colonial/jb_colonial_washingtn_2.html '>
>
>         <MetadataString containerField='metadata' name='calendar'
> reference='this node describes nature of parent node, and is not intended
> as a data value' value='"Julian"'/>
>         <!-- MetadataSet next field of interest is 'value' and so
> contained Metadata nodes must have containerField='value' which IS NOT
> default in X3D3' -->
>         <MetadataInteger containerField='value' name='day' value='11'/>
>         <MetadataInteger containerField='value' name='month' value='2'/>
>         <MetadataInteger containerField='value' name='year' value='1731'/>
>
>     </MetadataSet>
>
> </WorldInfo>
>
>    - World Info Example Metadata Set X3D 4
>    -
>    https://x3dgraphics.com/examples/X3dForWebAuthors/Chapter15Metadata/WorldInfoExampleMetadataSetX3D4Index.html
>
> <WorldInfo>
>
>     <!-- WorldInfo single available child field of interest is 'metadata'
> so contained MetadataSet must have containerField='metadata' which IS NOT
> default in X3D4' -->
>     <MetadataSet containerField='metadata' name='birthday' reference='
> http://www.americaslibrary.gov/jb/colonial/jb_colonial_washingtn_2.html '>
>
>         <MetadataString containerField='metadata' name='calendar'
> reference='this node describes nature of parent node, and is not intended
> as a data value' value='"Julian"'/>
>         <!-- MetadataSet next field of interest is 'value' and so
> contained Metadata nodes must have containerField='value' which IS the
> default in X3D4' -->
>         <MetadataInteger name='day' value='11' containerField='value'/>
>         <MetadataInteger name='month' value='2' containerField='value'/>
>         <MetadataInteger name='year' value='1731' containerField='value'/>
>
>     </MetadataSet>
>
> </WorldInfo>
>
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