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<p class="MsoNormal">Extensible 3D (X3D) Graphics is the royalty-free open standard for publishing, viewing, printing and archiving interactive 3D models on the Web.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Here are recent updates. Had some good refinements related to MultiTexture, now rippled out through all of the open-source autogenerated software builds.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:-.25in;mso-list:l0 level1 lfo2">X3D XML Schema update activity, addressing some scene validation issues:</li></ol>
<p class="MsoNormal" style="text-indent:.25in">https://www.web3d.org/specifications/x3d-schema-changelog.txt</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">25 SEP 2021, brutzman</p>
<p class="MsoNormal">- (v3.1-v4.0) MultiTexture texture field has type X3DSingleTextureNode and can include</p>
<p class="MsoNormal"> ComposedCubeMapTexture, GeneratedCubeMapTexture, ImageCubeMapTexture,</p>
<p class="MsoNormal"> ComposedTexture3D, ImageTexture3D, PixelTexture3D</p>
<p class="MsoNormal">- (v3.1-v4.0) MultiTextureCoordinate is part of ComposedGeometryContentModel</p>
<p class="MsoNormal">- (v4.0) allow X3DComposedGeometryNode texCoord field to include</p>
<p class="MsoNormal"> X3DSingleTextureCoordinateNode|MultiTextureCoordinate</p>
<p class="MsoNormal">- (v4.0) allow watchlist containerField for backwards compatibility of X3D models in</p>
<p class="MsoNormal"> containerFieldChoicesAudioClip</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Corresponding changes added to X3D XML DOCTYPE as appropriate. All details found at</p>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">X3D Specifications: Schema and DOCTYPE Validation</li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3"><a href="https://www.web3d.org/specifications">https://www.web3d.org/specifications</a>
</li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<ol style="margin-top:0in" start="2" type="1">
<li class="MsoListParagraph" style="margin-left:-.25in;mso-list:l0 level1 lfo2">X3D XML Schema changes are applied to the X3DUOM, which then in turn is applied via XSLT conversion stylesheets to create multiple coding projects.</li></ol>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">X3D Unified Object Model (X3DUOM)</li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3"><a href="https://www.web3d.org/specifications/X3DUOM.html">https://www.web3d.org/specifications/X3DUOM.html</a>
</li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3"><a href="https://www.web3d.org/specifications/X3dUnifiedObjectModel-4.0.xml">https://www.web3d.org/specifications/X3dUnifiedObjectModel-4.0.xml</a>
</li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">“The X3D Unified Object Model (X3DUOM) is a full set of object-oriented interfaces for all nodes, fields and statements in the X3D Architecture Specification.”</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Each of the following codebase updates passed respective sets of unit tests and conversions using the test scenes (nearly 4000 total).</p>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">X3D Resources, Examples: Scene Archives for X3D</li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3"><a href="https://www.web3d.org/x3d/content/examples/X3dResources.html#Examples">https://www.web3d.org/x3d/content/examples/X3dResources.html#Examples</a>
</li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<ol style="margin-top:0in" start="3" type="1">
<li class="MsoListParagraph" style="margin-left:-.25in;mso-list:l0 level1 lfo2">JAVA X3DJSAIL API</li></ol>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">X3D Java Scene Access Interface Library (X3DJSAIL)</li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3"><a href="http://www.web3d.org/specifications/java/X3DJSAIL.html">http://www.web3d.org/specifications/java/X3DJSAIL.html</a>
</li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">“X3D Java Scene Access Interface Library (X3DJSAIL) supports programmers with standards-based X3D Java interfaces and objects, all as open source.”</p>
<p class="MsoNormal"><o:p> </o:p></p>
<ol style="margin-top:0in" start="4" type="1">
<li class="MsoListParagraph" style="margin-left:-.25in;mso-list:l0 level1 lfo2">Python X3DPSAIL API</li></ol>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">X3D Python Scene Access Interface Library (X3DPSAIL)</li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3"><a href="https://www.web3d.org/x3d/stylesheets/python/python.html">https://www.web3d.org/x3d/stylesheets/python/python.html</a>
</li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">Python x3d.py package</li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3"><a href="https://pypi.org/project/x3d">https://pypi.org/project/x3d</a>
</li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">“The x3d.py Python X3D Package supports programmers with Python interfaces and objects for standards-based X3D programming, all as open source.”</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Design Features</p>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">The current implementation strives to follow first principles of python package design, being as "pythonic" as possible. Creating a native-Python implementation for X3D data structures
appears to provide the greatest possible portability.</li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">Python is exceedingly rigorous regarding design and implementation, demands crisp readability, and often leads to a single best approach for each programming task. These are valuable
features that lead to ease of programming and greatly reduced debugging. A single well-constructed open-source Python X3D implementation has the potential to serve all Python distributions and programmers well.</li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<ol style="margin-top:0in" start="5" type="1">
<li class="MsoListParagraph" style="margin-left:-.25in;mso-list:l0 level1 lfo2">X3D Ontology</li></ol>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">X3D Ontology for Semantic Web</li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3"><a href="https://www.web3d.org/x3d/content/semantics">https://www.web3d.org/x3d/content/semantics</a>
</li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">“The X3D Ontology for Semantic Web provides terms of reference for semantic query of X3D models.”</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Steady work continues. All feedback welcome. Have fun with X3D4! 8)</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">all the best, Don<br>
<span style="font-size:10.0pt;font-family:"Courier New"">-- <br>
Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu<br>
Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149<br>
X3D graphics, virtual worlds, navy robotics </span><a href="http://faculty.nps.edu/brutzman"><span style="font-size:10.0pt;font-family:"Courier New"">http://faculty.nps.edu/brutzman</span></a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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