[x3d-public] example model illustrating DEF/USE copy-by-sharing relationships

[John Carlson]

I looked at the XML model, but I didn’t see how it was related to SAI,
except via conversions.  I didn’t read the Mantis yet either.  Without
looking at the bindings or the Mantis, does this involve using variable
references (for example, Java variables) in more than one place  in binding
code?  Re-using a variable for a node instead of using a USE field.

That would be a tremendous step forward.  Perhaps that’s something I can
work on in X3DJSONLD!

Hmm!

John

On Mon, Aug 5, 2024 at 3:49 AM Brutzman, Donald (Don) (CIV) via x3d-public <
x3d-public at web3d.org> wrote:

> Dick Puk and I continue working steadily on specification Mantis issues.
> Latest is
>
>
>    - DEF/USE labelling and functionality needs to be better specified for
>    SAI and programming languages
>    - https://www.web3d.org/member-only/mantis/view.php?id=690
>
>
> Towards this end, I build a new animation model that seems helpful.
> Feedback welcome.
>
>
>    -  X3D Example Archives: X3D4AM, X3D for Advanced Modeling, Animation,
>    DEF USE Animation Example
>    - Illustrate how USE nodes implement copy by reference, resulting in
>    immediate changes when original DEF node is modified.
>    -
>    https://www.web3d.org/x3d/content/examples/X3dForAdvancedModeling/Animation/DEF_USE_AnimationExample.x3d
>    -
>    https://www.web3d.org/x3d/content/examples/X3dForAdvancedModeling/Animation/DEF_USE_AnimationExampleIndex.html
>    -
>
>
> Incidentally I used both XMLSpy and X3D-Edit to create the model, which
> was interesting and effective.  Also updated all the catalog files for X3D
> Examples Archive to make such tasks even easier.  Meanwhile found a setting
> in XMLSpy that aligns handling of whitespace with X3D Canonical Form, which
> is what we use in version control and diffing and XML security and X3D
> Binary.  Pretty simple adjustment: use 2 spaces instead of tabs for
> indentation.
>
>
>    - Altova XMLSpy https://www.altova.com/xmlspy-xml-editor
>    -
>    https://www.web3d.org/x3d/content/examples/X3dForAdvancedModeling/Animation/XMLSpyPrettyPrintSpacingTextViewSettings.png
>
>
> Have fun with X3D!  🙂
>
>
> 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
>
>
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>
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