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

Brutzman, Donald (Don) (CIV) brutzman at nps.edu
Mon Aug 5 01:48:03 PDT 2024


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
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Illustrate how USE nodes implement copy by reference, resulting in immediate changes when original DEF node is modified.
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https://www.web3d.org/x3d/content/examples/X3dForAdvancedModeling/Animation/DEF_USE_AnimationExample.x3d
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https://www.web3d.org/x3d/content/examples/X3dForAdvancedModeling/Animation/DEF_USE_AnimationExampleIndex.html
  *
[cid:670f7613-98f3-4bef-8981-ee1b1d5d19c3]

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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